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Wed, 04 Dec 2019 01:15:00 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Alexander Pelov Date: Wed, 4 Dec 2019 10:14:43 +0100 Message-ID: To: lp-wan Content-Type: multipart/alternative; boundary="0000000000004a9ac80598dd3f84" Archived-At: Subject: Re: [lp-wan] WG Rechartering - new charter approval vote (vote ends Dec 3rd) X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Dec 2019 09:15:04 -0000 --0000000000004a9ac80598dd3f84 Content-Type: text/plain; charset="UTF-8" Dear all, Thank you for confirming what we saw in the room and voting on the Mailing List. *The new charter has now been accepted. * The Chairs will move together with our AD - Suresh - to publish the new charter on Datatracker. Thank you all for your participation! Regards, Pascal and Alexander On Tue, Nov 19, 2019 at 11:04 AM Alexander Pelov wrote: > Dear all, > > As we have achieved all our milestones the LPWAN WG is now rechartering. > We have been discussing the recharter for several IETFs now, so most of the > new charter should be familiar. > > The new charter is as follows: > - The introduction and the context remain unchanged. > - Charter item 1 is a generalization of the Charter item 1 we discussed in > past IETFs. > - Charter items 2 and 4 come directly from our previous charter. > - Charter item 3 was proposed, discussed and voted during the session. > - Charter item 5 has been discussed during the past several IETFs. > > We would like to confirm the agreement in the room on the mailing list. > Please vote by December 3rd, 23h55 CET. > > Cheers, > Pascal and Alexander > > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - > > *Charter Proposal for LPWAN Working Group* > *(Changes are given below in bold)* > A new generation of wireless technologies has emerged under the generic > name of Low-Power Wide-Area (LPWA), with a number of common > characteristics, which make these technologies unique and disruptive for > Internet of Things applications. > Those common traits include an optimized radio modulation, a star > topology, frame sizes in the order of tens of bytes transmitted a few times > per day at ultra-low speeds and sometimes variable MTUs, and, though > downstream may be supported, a mostly upstream transmission pattern that > allows the devices to spend most of their time in low- energy deep-sleep > mode. > This enables a range of several kilometers and a long battery lifetime, > possibly ten years operating on a single coin-cell. This also enables > simple and scalable deployments with low-cost devices and thin > infrastructures. > Those benefits come at a price: the layer 2 frame formats are optimized > and specific to each individual technology. There is no network layer and > the application is often hard wired to the layer 2 frame format, leading to > siloed deployments that must be managed, secured and operated individually. > Migrating from one LPWA technology to another implies rebuilding the whole > chain. > To unleash the full power of LPWA technologies and their ecosystems, there > is a need to couple them with other ecosystems that will guarantee the > inter-working by introducing a network layer, and enable common components > for management and security, as well as shared application profiles. The > IETF can contribute by providing IPv6 connectivity, and propose > technologies to secure the operations and manage the devices and their > gateways. > The Working Group will focus on enabling IPv6 connectivity over the > following selection of Low-Power Wide-Area technologies: SIGFOX, LoRa, > WI-SUN and NB-IOT. > These technologies present similar characteristics of rare and widely > unbalanced over-the-air transmissions, with little capability to alter the > frame formats to accommodate this work, which makes it so that existing > IETF work (6lo) cannot be trivially applied. > The Working Group will leverage cross-participation with the associated > set of stakeholders to ensure that the work taking place corresponds to > real demands and that the proposed solutions are indeed applicable. > The group will produce informational work describing LPWA technologies and > their needs as well as new standard work to optimize IPv6-based > communications to the end device > > The group will: > *1. Perform SCHC Maintenance, including enabling SCHC mechanisms for Upper > layer Protocols. * > > > > *2. Produce Standard Track documents to apply SCHC IPv6/UDP over the > baseline technologies.3. Produce a Standards Track document to provide a > mechanism to improve the reliability of delivering fragmented multicast > packets.4. Produce a Standards Track document to define the generic data > models to formalize the compression and fragmentation contexts. 5. Produce > a Standards Track document to enable operations, administration and > maintenance (OAM) to the LPWAN device, including support for delayed or > proxyed liveness verification (Ping).* > > > --0000000000004a9ac80598dd3f84 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dear all,

Thank you for confirming = what we saw in the room and voting on the Mailing=C2=A0List.

=
The new charter has now been accepted.=C2=A0
The Chairs will move together with our AD - Suresh - to publis= h the new charter on Datatracker.

Thank you all fo= r your participation!=C2=A0

Regards,
Pas= cal and Alexander

On Tue, Nov 19, 2019 at 11:04 AM Alexander Pelov <= ;a@ackl.io> wrote:
Dear all,

<= /div>
As we have achieved all our milestones the LPWAN WG is now rechar= tering. We have been discussing the recharter for several IETFs now, so mos= t of the new charter should be familiar.=C2=A0

The= new charter is as follows:
- The introduction and the context re= main unchanged.=C2=A0
- Charter item 1 is a generalization of the= Charter item 1 we discussed in past IETFs.
- Charter items 2 and= 4 come directly from our previous charter.
- Charter item 3= was proposed, discussed and voted during the session.
- Charter item 5 has been discussed during the past several IETFs.

We would like to confirm the agreement in the room = on the mailing list.=C2=A0
Please vote by December 3rd, 23h55 CET= .

Cheers,
Pascal and Alexander

- - - - -=C2=A0- - - - -=C2=A0- - - - -=C2=A0- - - - -=C2= =A0- - - - -=C2=A0- - - - -=C2=A0

Charte= r Proposal for LPWAN Working Group
(Changes are given = below in bold)
A new generation of wireless technologies = has emerged under the generic=E2=80=A8name of Low-Power Wide-Area (LPWA), w= ith a number of common=E2=80=A8characteristics, which make these technologi= es unique and disruptive for=E2=80=A8Internet of Things applications.
Th= ose common traits include an optimized radio modulation, a star=E2=80=A8top= ology, frame sizes in the order of tens of bytes transmitted=E2=80=A8a few = times per day at ultra-low speeds and sometimes variable MTUs,=E2=80=A8and,= though downstream may be supported, a mostly upstream transmission=E2=80= =A8pattern that allows the devices to spend most of their time in low-=E2= =80=A8energy deep-sleep mode.
This enables a range of several kilometers= and a long battery lifetime,=E2=80=A8possibly ten years operating on a sin= gle coin-cell. This also enables=E2=80=A8simple and scalable deployments wi= th low-cost devices and thin=E2=80=A8infrastructures.
Those benefits com= e at a price: the layer 2 frame formats are optimized=E2=80=A8and specific = to each individual technology. There is no network layer=E2=80=A8and the ap= plication is often hard wired to the layer 2 frame format,=E2=80=A8leading = to siloed deployments that must be managed, secured and operated=E2=80=A8in= dividually. Migrating from one LPWA technology to another implies=E2=80=A8r= ebuilding the whole chain.
To unleash the full power of LPWA technologie= s and their ecosystems,=E2=80=A8there is a need to couple them with other e= cosystems that will guarantee=E2=80=A8the inter-working by introducing a ne= twork layer, and enable common=E2=80=A8components for management and securi= ty, as well as shared application=E2=80=A8profiles. The IETF can contribute= by providing IPv6 connectivity, and=E2=80=A8propose technologies to secure= the operations and manage the devices and=E2=80=A8their gateways.
The W= orking Group will focus on enabling IPv6 connectivity over the=E2=80=A8foll= owing selection of Low-Power Wide-Area technologies: SIGFOX, LoRa,=E2=80=A8= WI-SUN and NB-IOT.
These technologies present similar characteristics of= rare and widely=E2=80=A8unbalanced over-the-air transmissions, with little= capability to alter=E2=80=A8the frame formats to accommodate this work, wh= ich makes it so that=E2=80=A8existing IETF work (6lo) cannot be trivially a= pplied.
The Working Group will leverage cross-participation with the ass= ociated=E2=80=A8set of stakeholders to ensure that the work taking place co= rresponds to=E2=80=A8real demands and that the proposed solutions are indee= d applicable.
The group will produce informational work describing LPWA= =E2=80=A8technologies and their needs as well as new standard work to optim= ize=E2=80=A8 IPv6-based communications to the end device

The = group will:
1. Perform SCHC Maintenance, including enabling SCHC mech= anisms for Upper layer Protocols.
2. Produce Standard Track docu= ments to apply SCHC IPv6/UDP over the baseline technologies.
3. Produce = a Standards Track document to provide a mechanism to improve the reliabilit= y of delivering fragmented multicast packets.
4. Produce a Standards Tra= ck document to define the generic data models to =C2=A0formalize the compre= ssion and=C2=A0fragmentation contexts.
5. Produce a Standards Track doc= ument to enable =C2=A0operations, administration and maintenance (OAM) to t= he LPWAN device, including support for delayed or proxyed liveness verifica= tion (Ping).


--0000000000004a9ac80598dd3f84-- From nobody Thu Dec 5 01:33:45 2019 Return-Path: X-Original-To: lp-wan@ietf.org Delivered-To: lp-wan@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 02A4A1200A4; Thu, 5 Dec 2019 01:33:39 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: lp-wan@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.111.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: lp-wan@ietf.org Message-ID: <157553841892.16529.16641185980053638414@ietfa.amsl.com> Date: Thu, 05 Dec 2019 01:33:39 -0800 Archived-At: Subject: [lp-wan] I-D Action: draft-ietf-lpwan-ipv6-static-context-hc-24.txt X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Dec 2019 09:33:39 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the IPv6 over Low Power Wide-Area Networks WG of the IETF. Title : Static Context Header Compression (SCHC) and fragmentation for LPWAN, application to UDP/IPv6 Authors : Ana Minaburo Laurent Toutain Carles Gomez Dominique Barthel Juan Carlos Zuniga Filename : draft-ietf-lpwan-ipv6-static-context-hc-24.txt Pages : 83 Date : 2019-12-05 Abstract: This document defines the Static Context Header Compression (SCHC) framework, which provides both a header compression mechanism and an optional fragmentation mechanism. SCHC has been designed for Low Power Wide Area Networks (LPWAN). SCHC compression is based on a common static context stored both in the LPWAN device and in the network infrastructure side. This document defines a generic header compression mechanism and its application to compress IPv6/UDP headers. This document also specifies an optional fragmentation and reassembly mechanism. It can be used to support the IPv6 MTU requirement over the LPWAN technologies. Fragmentation is needed for IPv6 datagrams that, after SCHC compression or when such compression was not possible, still exceed the layer-2 maximum payload size. The SCHC header compression and fragmentation mechanisms are independent of the specific LPWAN technology over which they are used. This document defines generic functionalities and offers flexibility with regard to parameter settings and mechanism choices. This document standardizes the exchange over the LPWAN between two SCHC entities. Settings and choices specific to a technology or a product are expected to be grouped into profiles, which are specified in other documents. Data models for the context and profiles are out of scope. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-lpwan-ipv6-static-context-hc/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-lpwan-ipv6-static-context-hc-24 https://datatracker.ietf.org/doc/html/draft-ietf-lpwan-ipv6-static-context-hc-24 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-lpwan-ipv6-static-context-hc-24 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Tue Dec 10 07:25:25 2019 Return-Path: X-Original-To: lp-wan@ietf.org Delivered-To: lp-wan@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 833AE120288; Tue, 10 Dec 2019 07:25:24 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: lp-wan@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.113.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: lp-wan@ietf.org Message-ID: <157599152444.9922.1462279830440996423@ietfa.amsl.com> Date: Tue, 10 Dec 2019 07:25:24 -0800 Archived-At: Subject: [lp-wan] I-D Action: draft-ietf-lpwan-coap-static-context-hc-12.txt X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Dec 2019 15:25:24 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the IPv6 over Low Power Wide-Area Networks WG of the IETF. Title : LPWAN Static Context Header Compression (SCHC) for CoAP Authors : Ana Minaburo Laurent Toutain Ricardo Andreasen Filename : draft-ietf-lpwan-coap-static-context-hc-12.txt Pages : 28 Date : 2019-12-10 Abstract: This draft defines the way SCHC header compression can be applied to CoAP headers. The CoAP header structure differs from IPv6 and UDP protocols since CoAP uses a flexible header with a variable number of options, themselves of variable length. The CoAP protocol messages format is asymmetric: the request messages have a header format different from the one in the response messages. This document explains how to use the SCHC compression mechanism for CoAP. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-lpwan-coap-static-context-hc/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-lpwan-coap-static-context-hc-12 https://datatracker.ietf.org/doc/html/draft-ietf-lpwan-coap-static-context-hc-12 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-lpwan-coap-static-context-hc-12 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Tue Dec 10 07:28:14 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2BDD2120168 for ; Tue, 10 Dec 2019 07:28:09 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.898 X-Spam-Level: X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=unavailable autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=ackl-io.20150623.gappssmtp.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5ZDKvOfYVPu6 for ; Tue, 10 Dec 2019 07:28:05 -0800 (PST) Received: from mail-vs1-xe35.google.com (mail-vs1-xe35.google.com [IPv6:2607:f8b0:4864:20::e35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B1828120024 for ; Tue, 10 Dec 2019 07:28:05 -0800 (PST) Received: by mail-vs1-xe35.google.com with SMTP id y195so13336633vsy.5 for ; Tue, 10 Dec 2019 07:28:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ackl-io.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=r1RxnOWnUlSHVb1Icu98aGZgX056fX1P+HReFnxVjgk=; b=O3233KCC4zsaktbx2U5aGgFASvrX9LXGUTzL3wg13hqmbkalalUTu8j8dvA1FjtDX5 dAehp7I1daPQjoEGVaORawyok+F3jnawF/P8YPdDh1SOWPTP4DvL7D+qwBLMMF+QPBoq 2h65oTmu666psTZ/f5BnA0ggBdVcgT7lGl+3jpHG4qOcHrPAXKk/KAPdwEZ34AMz7rOm MjrPYJYeHIbVCNeAfIpXqpYVCmUoSnefJWcgaLQyqqrt3j+8NKgLKGqM9RAzb03mWYEq oVxiNUKw9geFZ4OOwCleNulciEar5VOVXn94koXbE0jey/ip7qmPcjcwrogUZIDqujst 3C1w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=r1RxnOWnUlSHVb1Icu98aGZgX056fX1P+HReFnxVjgk=; b=p8NO5zMdtYRGPvoOIT8JsgL1N6FTScIEANIgO1NbHbqfnHuy01VOUyPo8kKH8bXtYl 8L2JKgSLd6Od44Ys0MJsVLwcrfUaNLFOwkmVey3tNH2vNOGmQQgWux8FgawvimhkgjCc 5AgyhXhGQE2noBFfW1/EzU2Cr7s1aiAyoq0LZXo5o3W5W1pSCl9dQ1JhTuTGRhwt/ntw Yc4w5WLiTGmuqMJIQamVxYo5TsYcg7EV2ZY1d2KgM6pgkiDUyE73x6HMoC5s9BG6dnLj MjnNwZiLoJV6IvaZtHyVI7g+QbpE37Dvo/JX6h7L4H0c+eFXmZ+S5I7MKKLAU/YCAK5h RQAQ== X-Gm-Message-State: APjAAAUPPgmRMSySmvUpzbiN4jNshU/gKylf7tCmxr8Gdg5/baqYuWFc owQioLK/XX1sRZa3kJAdk+KSd2mNkWMTyY2BqK7uUw== X-Google-Smtp-Source: APXvYqwEcqfqnScWBW7dVbvVvDgswooIEO9WdJcoELOxOaQrop/fkixQf0DYSM9/W0LBpRRyKqBl9ItN94kqHULA3CM= X-Received: by 2002:a67:7a92:: with SMTP id v140mr25957276vsc.218.1575991684527; Tue, 10 Dec 2019 07:28:04 -0800 (PST) MIME-Version: 1.0 References: <157504098736.4738.369701137511782310@ietfa.amsl.com> In-Reply-To: <157504098736.4738.369701137511782310@ietfa.amsl.com> From: Ana Minaburo Date: Tue, 10 Dec 2019 16:27:38 +0100 Message-ID: To: Stephen Farrell Cc: Iot-dir@ietf.org, lp-wan , last-call@ietf.org, draft-ietf-lpwan-coap-static-context-hc.all@ietf.org, Laurent Toutain Content-Type: multipart/alternative; boundary="00000000000086978305995b28ad" Archived-At: Subject: Re: [lp-wan] Iotdir last call review of draft-ietf-lpwan-coap-static-context-hc-11 X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Dec 2019 15:28:09 -0000 --00000000000086978305995b28ad Content-Type: text/plain; charset="UTF-8" Dear Stephen, Thank you for your comments, Reviewer: Stephen Farrell > Review result: Almost Ready > > Hiya, > > I noted only one issue that might need fixing: > > - If two entities are using this scheme and have an agreed set of > rules, don't you need to say that packets that don't match any > rule(s) should be sent unmodified? > Ana: Yes, according to SCHC-draft-24 section 6 If no Rule was found the packet must be sent uncompressed. We have added: In Section 3. * If no valid Rule was found, then the packet MUST be sent uncompressed using the RuleID dedicated to this purpose and the Compression Residue is the complete header of the packet. See section 6 of {{I-D.ietf-lpwan-ipv6-static-context-hc}}. > I also noticed a couple of nits: > > - Intro: "There is no risk to lock a device in a particular version > of CoAP." I'm not fully sure what that's trying to say but a) "no > risk" is a major claim that's not justified:-) and b) SCHC (by > design) does inherently risk being less effective if protocols or > patterns of protocol usage change. I'd say just delete the > sentence. > Ana: Yes, there is no risk, the sentence has been deleted > > - section 2: "SCHC C/D" is used without being defined. > Ana: Done > > - 7.2: Typo: "The Inner Plaintext contains sensible information > which is not necessary for proxy operation." s/sensible/sensitive/ > I guess. > Ana: Done You will find the modifications next: A new version of I-D, draft-ietf-lpwan-coap-static-context-hc-12.txt has been successfully submitted by Ana Minaburo and posted to the IETF repository. Name: draft-ietf-lpwan-coap-static-context-hc Revision: 12 Title: LPWAN Static Context Header Compression (SCHC) for CoAP Document date: 2019-12-10 Group: lpwan Pages: 28 URL: https://www.ietf.org/internet-drafts/draft-ietf-lpwan-coap-static-context-hc-12.txt Status: https://datatracker.ietf.org/doc/draft-ietf-lpwan-coap-static-context-hc/ Htmlized: https://tools.ietf.org/html/draft-ietf-lpwan-coap-static-context-hc-12 Htmlized: https://datatracker.ietf.org/doc/html/draft-ietf-lpwan-coap-static-context-hc Diff: https://www.ietf.org/rfcdiff?url2=draft-ietf-lpwan-coap-static-context-hc-12 Thanks Ana --00000000000086978305995b28ad Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dear St= ephen,

Thank you for your comments,=C2=A0

=
Reviewer: Stephen F= arrell
Review result: Almost Ready

Hiya,

I noted only one issue that might need fixing:

- If two entities are using this scheme and have an agreed set of
= =C2=A0 rules, don't you need to say that packets that don't match a= ny
=C2=A0 rule(s) should be sent unmodified?

Ana: Yes, according to SCHC-draft-24 section 6 If no Rule was foun= d the packet must be sent uncompressed. We have added:

=
In Section 3.

* If no valid Rule was fou= nd, then the packet MUST be sent uncompressed=C2=A0
=C2=A0 using = the RuleID dedicated to this purpose and the Compression Residue=C2=A0
=C2=A0 is the complete header of the packet. See section 6 of {{I-D.i= etf-lpwan-ipv6-static-context-hc}}. =C2=A0


I also noticed a couple of nits:

- Intro: "There is no risk to lock a device in a particular versio= n
=C2=A0 of CoAP." I'm not fully sure what that's trying to= say but a) "no
=C2=A0 risk" is a major claim that's not j= ustified:-) and b) SCHC (by
=C2=A0 design) does inherently risk being l= ess effective if protocols or
=C2=A0 patterns of protocol usage change.= =C2=A0 I'd say just delete the
=C2=A0 sentence.

Ana: Yes, there is no risk, the sentence has been deleted= =C2=A0

- section 2: "SCHC C/D" is used without being defined.

Ana: Done=C2=A0

- 7.2: Typo: "The Inner Plaintext contains sensible information =C2=A0 which is not necessary for proxy operation." s/sensible/sensi= tive/
=C2=A0 I guess.
Ana: Done=C2=A0
You will find the modifications next:
A new version o= f I-D, draft-ietf-lpwan-coap-static-context-hc-12.txt
has been successfu= lly submitted by Ana Minaburo and posted to the
IETF repository.

= Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-lpwan-coap-static-= context-hc
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A012
Title:=C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 LPWAN Static Context Header Compression (SCHC) for Co= AP
Document date:=C2=A0 2019-12-10
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 lpwan
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 28
URL:=C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0https://www.ietf.org/internet-drafts/draft-ietf-lpwa= n-coap-static-context-hc-12.txt
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0https://datatracker.i= etf.org/doc/draft-ietf-lpwan-coap-static-context-hc/
Htmlized:=C2=A0= =C2=A0 =C2=A0 =C2=A0https://t= ools.ietf.org/html/draft-ietf-lpwan-coap-static-context-hc-12
Htmliz= ed:=C2=A0 =C2=A0 =C2=A0 =C2=A0https://datatracker.ietf.org/doc/html/draft-ietf-lpwan-coap-static-c= ontext-hc
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0https://www.ietf.org/rfcdiff?url2= =3Ddraft-ietf-lpwan-coap-static-context-hc-12

<= div>Thanks
Ana=C2=A0
--00000000000086978305995b28ad-- From nobody Wed Dec 11 23:13:27 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2398F1200FD for ; Wed, 11 Dec 2019 23:13:26 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.199 X-Spam-Level: X-Spam-Status: No, score=-4.199 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xNxVrbIVoc1S for ; Wed, 11 Dec 2019 23:13:23 -0800 (PST) Received: from gabriel-vm-2.zfn.uni-bremen.de (gabriel-vm-2.zfn.uni-bremen.de [134.102.50.17]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E229912008C for ; Wed, 11 Dec 2019 23:13:22 -0800 (PST) Received: from [192.168.217.116] (p548DC893.dip0.t-ipconnect.de [84.141.200.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by gabriel-vm-2.zfn.uni-bremen.de (Postfix) with ESMTPSA id 47YQ4d11PCz16GQ; Thu, 12 Dec 2019 08:13:21 +0100 (CET) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) From: Carsten Bormann In-Reply-To: <157610518175.11535.3326955842989274725.idtracker@ietfa.amsl.com> Date: Thu, 12 Dec 2019 08:13:20 +0100 X-Mao-Original-Outgoing-Id: 597827598.904117-1eec377969c66f0346efaa35f60fa7fd Content-Transfer-Encoding: quoted-printable Message-Id: <86CDF692-57B5-44EA-8A60-67313889B632@tzi.org> References: <157610518175.11535.3326955842989274725.idtracker@ietfa.amsl.com> To: lp-wan@ietf.org X-Mailer: Apple Mail (2.3445.9.1) Archived-At: Subject: Re: [lp-wan] Protocol Action: 'Static Context Header Compression (SCHC) and fragmentation for LPWAN, application to UDP/IPv6' to Proposed Standard (draft-ietf-lpwan-ipv6-static-context-hc-24.txt) X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Dec 2019 07:13:26 -0000 Chic! :-) Congratulations for completing a great foundation to make IPv6 work with = a few more billions of nodes! Gr=C3=BC=C3=9Fe, Carsten > On Dec 11, 2019, at 23:59, The IESG wrote: >=20 > The IESG has approved the following document: > - 'Static Context Header Compression (SCHC) and fragmentation for = LPWAN, > application to UDP/IPv6' > (draft-ietf-lpwan-ipv6-static-context-hc-24.txt) as Proposed Standard >=20 > This document is the product of the IPv6 over Low Power Wide-Area = Networks > Working Group. >=20 > The IESG contact persons are =C3=89ric Vyncke and Suresh Krishnan. >=20 > A URL of this Internet Draft is: > = https://datatracker.ietf.org/doc/draft-ietf-lpwan-ipv6-static-context-hc/ >=20 >=20 >=20 >=20 >=20 > Technical Summary >=20 > This document defines the Static Context Header Compression (SCHC) > framework, which provides both header compression and fragmentation > functionalities. SCHC has been tailored for Low Power Wide Area > Networks (LPWAN). >=20 > SCHC compression is based on a common static context stored in both > the LPWAN devices and the network side. This document defines a > header compression mechanism and its application to compress = IPv6/UDP > headers. >=20 > This document also specifies a fragmentation and reassembly = mechanism > that is used to support the IPv6 MTU requirement over the LPWAN > technologies. Fragmentation is needed for IPv6 datagrams that, = after > SCHC compression or when such compression was not possible, still > exceed the layer two maximum payload size. >=20 > The SCHC header compression and fragmentation mechanisms are > independent of the specific LPWAN technology over which they are > used. Note that this document defines generic functionalities and > advisedly offers flexibility with regard to parameter settings and > mechanism choices. Such settings and choices are expected to be = made > in other technology-specific documents. >=20 > Working Group Summary >=20 > The WGLC comments were rich but did not show > fundamental issues in the design. The 30 open tickets lead mostly to = editorial > changes that helped clarify the text ann avoid misinterpretation. We = spent the > last IETF meeting and multiple interim going through the tickets and = addressed > them concensualy.=20 >=20 > Document Quality >=20 > The protocol has been implemented and demonstrated over LoRa and = SigFox > technologies. There is only one vendor proposing a stack at this = point. > The reviewers are acknowledged in the document. The original > shepherd was Dominique Barthel. He went so deep in the process, = proposing > edits and helping with the corrected text, that the chairs asked him = to move > to a co-author position, and took over shepherding, not because he = was not > good enough, but because he did too well at it. >=20 > Personnel >=20 > The Document Shepherd is Pascal Thubert. The Responsible Area = Director is Suresh Krishnan. >=20 > _______________________________________________ > IETF-Announce mailing list > IETF-Announce@ietf.org > https://www.ietf.org/mailman/listinfo/ietf-announce From nobody Thu Dec 12 00:48:24 2019 Return-Path: X-Original-To: lp-wan@ietf.org Delivered-To: lp-wan@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id BA6CF1201DE; Wed, 11 Dec 2019 14:59:41 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: The IESG To: "IETF-Announce" X-Test-IDTracker: no X-IETF-IDTracker: 6.113.0 Auto-Submitted: auto-generated Precedence: bulk Cc: The IESG , pthubert@cisco.com, Pascal Thubert , lpwan-chairs@ietf.org, Dominique Barthel , lp-wan@ietf.org, suresh@kaloom.com, draft-ietf-lpwan-ipv6-static-context-hc@ietf.org, rfc-editor@rfc-editor.org Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Message-ID: <157610518175.11535.3326955842989274725.idtracker@ietfa.amsl.com> Date: Wed, 11 Dec 2019 14:59:41 -0800 Archived-At: X-Mailman-Approved-At: Thu, 12 Dec 2019 00:48:23 -0800 Subject: [lp-wan] Protocol Action: 'Static Context Header Compression (SCHC) and fragmentation for LPWAN, application to UDP/IPv6' to Proposed Standard (draft-ietf-lpwan-ipv6-static-context-hc-24.txt) X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Dec 2019 22:59:42 -0000 The IESG has approved the following document: - 'Static Context Header Compression (SCHC) and fragmentation for LPWAN, application to UDP/IPv6' (draft-ietf-lpwan-ipv6-static-context-hc-24.txt) as Proposed Standard This document is the product of the IPv6 over Low Power Wide-Area Networks Working Group. The IESG contact persons are Éric Vyncke and Suresh Krishnan. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-lpwan-ipv6-static-context-hc/ Technical Summary This document defines the Static Context Header Compression (SCHC) framework, which provides both header compression and fragmentation functionalities. SCHC has been tailored for Low Power Wide Area Networks (LPWAN). SCHC compression is based on a common static context stored in both the LPWAN devices and the network side. This document defines a header compression mechanism and its application to compress IPv6/UDP headers. This document also specifies a fragmentation and reassembly mechanism that is used to support the IPv6 MTU requirement over the LPWAN technologies. Fragmentation is needed for IPv6 datagrams that, after SCHC compression or when such compression was not possible, still exceed the layer two maximum payload size. The SCHC header compression and fragmentation mechanisms are independent of the specific LPWAN technology over which they are used. Note that this document defines generic functionalities and advisedly offers flexibility with regard to parameter settings and mechanism choices. Such settings and choices are expected to be made in other technology-specific documents. Working Group Summary The WGLC comments were rich but did not show fundamental issues in the design. The 30 open tickets lead mostly to editorial changes that helped clarify the text ann avoid misinterpretation. We spent the last IETF meeting and multiple interim going through the tickets and addressed them concensualy. Document Quality The protocol has been implemented and demonstrated over LoRa and SigFox technologies. There is only one vendor proposing a stack at this point. The reviewers are acknowledged in the document. The original shepherd was Dominique Barthel. He went so deep in the process, proposing edits and helping with the corrected text, that the chairs asked him to move to a co-author position, and took over shepherding, not because he was not good enough, but because he did too well at it. Personnel The Document Shepherd is Pascal Thubert. The Responsible Area Director is Suresh Krishnan. From nobody Fri Dec 13 06:04:21 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 204E4120856 for ; Fri, 13 Dec 2019 06:04:20 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=ackl-io.20150623.gappssmtp.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id axMP4gATzsmU for ; Fri, 13 Dec 2019 06:04:18 -0800 (PST) Received: from mail-io1-xd2b.google.com (mail-io1-xd2b.google.com [IPv6:2607:f8b0:4864:20::d2b]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1AC4F120873 for ; Fri, 13 Dec 2019 06:04:18 -0800 (PST) Received: by mail-io1-xd2b.google.com with SMTP id x1so2474964iop.7 for ; Fri, 13 Dec 2019 06:04:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ackl-io.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to; bh=m/0gK6yzfsG2zFWFU2MCwOog8nZHBJjOJl5Ux2csAYI=; b=OtU3hvuA/bxE75nrMILShd2w9FY8YuzKSLOReMPsWq9xlCsIZrT7Zs0c+Rl25LHWTs DUXpDGF4DeNYpTy73nFeL3xhORxfyTVDllc5p9A58iAaBgLhCvZGjvRe3M1HNX+BrpWi /t3SrTqmZUnECPCIsu8X4bc8vdxjNISQ7wRqNYI13n0Udqx6hZIRUxPybwm9LJSO9lv/ MKhqduiWGa36jFBHlMXtL7Oi1WZbHGS+vkSZGVLG/mYV5FFJ9MxIAm14UvHcpbTY1TZe LoPIC05H/kSZePxVydMH42ZWVn4w9q0W6ltyPULklqTgaRi8Z7y9l/8IWgmKqAVeDkLi TF2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=m/0gK6yzfsG2zFWFU2MCwOog8nZHBJjOJl5Ux2csAYI=; b=Vu30B/ER7G8wH7Tpsr8wlT2TbWGcwCmoTatsw4Tfb3YfxJg9Eno2yQkoGd9u1yYvnt MVWTUeZtr/OjcE84ISGBR9amxiUGxU3YTmBo2eBgGBCanck2PwUvDGqNhnL5H5RxII1C hyj5BwhDxUNuPKWVk3XNj/tUn+ky3B+9YIbOdtm4S9VuGNqtk/osJci2wkvNxUkFdhi2 f4iJhrNkOJI3DG62ZaE5Qb0BLddnMbmNmfyaQLhdfZi985arzRx+wm3voM14LWPouCS6 k9/AR+uQKNPgkiO9C64ukUkHeT+95ZACba23IyTxdAZtPv0h1j7v+4XbHDRvPVb8v8qB 9gGw== X-Gm-Message-State: APjAAAWTS7IG8+plGFcUFF/pgNvwBVHn/TB/uHpM1wFofLXScUKOoDL5 kLPYZcSHQW2rkvnbwhW9CuB/pW3dWqcpRKe4LqnmXUxy X-Google-Smtp-Source: APXvYqwEb76eKsiaBIanQJCTsuslslplvz2Bk9eZqpMzoQ/GHm0eLPXMuw0aDTnbQrNfYJwVIV6HBxk0KEnPIZao+cc= X-Received: by 2002:a5d:9392:: with SMTP id c18mr7912336iol.294.1576245857101; Fri, 13 Dec 2019 06:04:17 -0800 (PST) MIME-Version: 1.0 From: Alexander Pelov Date: Fri, 13 Dec 2019 15:03:51 +0100 Message-ID: To: lp-wan Content-Type: multipart/alternative; boundary="00000000000064461805999656e3" Archived-At: Subject: [lp-wan] Next interim meetings - starting Jan 8th (regular slot) X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Dec 2019 14:04:20 -0000 --00000000000064461805999656e3 Content-Type: text/plain; charset="UTF-8" Dear all, First of call, congrats on the amazing work and the advancement from the past months! Since we have now the publication of the SCHC in the RFC Editor Queue and the rechartering almost complete, we can restart our regular interim meetings. Unless there are significant demands on the list (or directly to the Chairs), we'll keep the traditional slot on *Wednesday, 4PM-5PM CET* (every other Wednesday). Given the time needed to schedule the interim meetings (2 weeks advance minimum) + end of year time, we can start on January 8th: January 8th January 22 February 5th February 19th March 4th (draft cut-off is March 9th) Optional final interim for IETF107 planning purposes: March 18th Please send your comments or remarks by next Monday (December 16th) after which we will request the interim sessions. Cheers, Pascal and Alexander --00000000000064461805999656e3 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dear all,

First of call, congrats on th= e amazing work and the advancement from the past months!
Since we= have now the publication of the SCHC in the RFC Editor Queue and the recha= rtering almost complete, we can restart our regular interim meetings.
=

Unless there are significant demands on the list (or di= rectly to the Chairs), we'll keep the traditional slot on Wednesday,= 4PM-5PM CET (every other Wednesday). Given the time needed to schedule= the interim meetings (2 weeks advance minimum)=C2=A0+ end of year time, we= can start on January 8th:

January 8th
J= anuary 22
February 5th
February 19th
March 4t= h
(draft cut-off is March 9th)
Optional final interim f= or IETF107 planning purposes: March 18th

Please se= nd your comments or remarks by next Monday (December 16th) after which we w= ill request the interim sessions.

Cheers,
Pascal and Alexander

--00000000000064461805999656e3-- From nobody Fri Dec 13 07:16:20 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 83281120882 for ; Fri, 13 Dec 2019 07:16:15 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.296 X-Spam-Level: X-Spam-Status: No, score=-14.296 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_FONT_LOW_CONTRAST=0.001, HTML_MESSAGE=0.001, HTTP_ESCAPED_HOST=0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, URI_HEX=0.1, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com header.b=cntIuVkB; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=pOAaNySh Received: from 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Authentication-Results: mail2.cec.uchile.cl; dmarc=pass (p=none dis=none) header.from=ing.uchile.cl Authentication-Results: mail2.cec.uchile.cl; spf=pass smtp.mailfrom=rmunozlara@ing.uchile.cl DKIM-Filter: OpenDKIM Filter v2.11.0 mail.cec.uchile.cl 2D48FA0D82 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ing.uchile.cl; s=default; t=1576514178; bh=nmJjB04bQAnOjKwcdo/PKN5Jk62+ywnVAnAkY6DDSnE=; h=From:Date:Subject:To:Cc:From; b=tnB4ImfhbizUQt1WpBzzsU3Zq7opGPdebV1PUZJd+nijyfuFt04t/ttWZEHv7NsPN UPEfkvhWUso7bDOQmOp76GAtVl5ubCkgxCkO/rRqKIok8IOkkvk0enlnod1RpyiFva 6sYams1eNYhaRAReS0qauxWrPW2E7U5J7SHJBFcI= Received: by mail-vs1-f53.google.com with SMTP id l24so4468262vsr.12 for ; Mon, 16 Dec 2019 08:36:18 -0800 (PST) X-Gm-Message-State: APjAAAXENdN5GhiM/xswOMMPgvlSQEIaJ7AseGKI7i0NO2BNF92ZD1AH x+q3KY4E35/Q2Gy1M3vvSzIVg7ytvyQQxBUH9dI= X-Google-Smtp-Source: APXvYqxnfzDxdm5qm9pB3TO3M+jOPB4qbCjLOU5CBPHFtxvqvfQ00kC89ipL1DpByYTYcxkzUjle1SLbQSPVAGOGvQ0= X-Received: by 2002:a67:e3da:: with SMTP id k26mr7512665vsm.172.1576514176681; Mon, 16 Dec 2019 08:36:16 -0800 (PST) MIME-Version: 1.0 From: =?UTF-8?Q?Rodrigo_Mu=C3=B1oz_Lara?= Date: Mon, 16 Dec 2019 13:36:05 -0300 X-Gmail-Original-Message-ID: Message-ID: To: "lp-wan@ietf.org" Cc: Sandra Cespedes , ogimenez@semtech.com Content-Type: multipart/alternative; boundary="0000000000007c0db00599d4cf7c" X-Virus-Scanned: ClamAV using ClamSMTP Archived-At: Subject: [lp-wan] Implementation of SCHC X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Dec 2019 16:36:26 -0000 --0000000000007c0db00599d4cf7c Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Dear Author, I have three questions about the draft: 1. The draft "draft-ietf-lpwan-ipv6-static-context-hc-22" indicates that in the profile of each technology the penultimate Tile size must be defined. On the other hand, in the draft "draft-ietf-lpwan-schc-over-lorawan-04" there is no definition in this regard. Can I consider that the penultimate tile size is the size of a regular tile? 2. In section 8.4.3.1, the draft "draft-ietf-lpwan-ipv6-static-context-hc-22", indicates that: "A Rule MU= ST NOT be selected if the values of M and WINDOW_SIZE for that Rule are suc= h that the SCHC Packet cannot be fragmented in (2 ^ M) * WINDOW_SIZE tiles= or less. ". Does this mean that the SCHC packet cannot be fragmented? 3. In section 5.6.2, the draft "draft-ietf-lpwan-schc-over-lorawan-04" indicates: "Retransmission and inactivity timers: LoRaWAN end-devices do not implement a" retransmission timer. "At the end of a window or a fragmentation session, corresponding ACK (s) is (are) transmitted by the network gateway (LoRaWAN application server) in the RX1 or RX2 receive s= lot of end-device. the end of its RX windows, it sends an all-0 (or an all-1= ) fragment with no payload to request an SCHC ACK retransmission. and MAY = be implements an "inactivity timer." The default RECOMMENDED duration of th= is timer is 12 hours. This value is mainly driven by application requiremen= ts and MAY be changed by the application. ". This indicates that the Receiv= er should send an ACK at the end of a window and if it does not, the transmitter will send a SCHC ACK retransmission. Is this operation not t= he same as ACK-Always (remember that we are in ACK-on-error mode)? Thanks -- *Rodrigo Mu=C3=B1oz Lara* *Universidad de Chile* --0000000000007c0db00599d4cf7c Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dear Author,=C2=A0=C2=A0

I have three q= uestions about the draft:

  1. The draft "draft-ietf-lpwan-ipv6-static-context-hc-22"= indicates that in the profile of each technology the penultimate Tile size= must be defined. On the other hand, in the draft "draft-ietf-lpwan-sc= hc-over-lorawan-04" there is no definition in this regard. Can I consi= der that the penultimate tile size is the size of a regular tile?
  2. In section 8.4.3.1, the draft "draft-ietf-lp= wan-ipv6-static-context-hc-22", indicates that: "A Rule MUST NOT = be selected if the values of M and WINDOW_SIZE for that Rule are such that = the SCHC Packet cannot be fragmented in (2 ^ M) * WINDOW_SIZE tiles or less= . ". Does this mean that the SCHC packet cannot be fragmented?
    3. In section 5.6.2, the draft "draft-ietf-lp= wan-schc-over-lorawan-04" indicates: "Retransmission and inactivi= ty timers: LoRaWAN end-devices do not implement a" retransmission time= r. "At the end of a window or a fragmentation session, corresponding A= CK (s) is (are) transmitted by the network gateway (LoRaWAN application ser= ver) in the RX1 or RX2 receive slot of end-device. the end of its RX window= s, it sends an all-0 (or an all-1) fragment with no payload to request an S= CHC ACK retransmission. and MAY be implements an "inactivity timer.&qu= ot; The default RECOMMENDED duration of this timer is 12 hours. This value = is mainly driven by application requirements and MAY be changed by the appl= ication. ". This indicates that the Receiver should send an ACK at the= end of a window and if it does not, the transmitter will send a SCHC ACK r= etransmission. Is this operation not the same as ACK-Always (remember that = we are in ACK-on-error mode)?

Thanks

--
Rodrigo Mu=C3=B1oz Lara
Universidad de C= hile

--0000000000007c0db00599d4cf7c-- From nobody Tue Dec 17 00:38:58 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 33932120111 for ; Tue, 17 Dec 2019 00:38:56 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.597 X-Spam-Level: X-Spam-Status: No, score=-2.597 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xZxWQrFSsdUJ for ; Tue, 17 Dec 2019 00:38:53 -0800 (PST) Received: from relais-inet.orange.com (relais-inet.orange.com [80.12.70.36]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C5C2C120106 for ; Tue, 17 Dec 2019 00:38:52 -0800 (PST) Received: from opfednr01.francetelecom.fr (unknown [xx.xx.xx.65]) by opfednr20.francetelecom.fr (ESMTP service) with ESMTP id 47cWkz2pxMz1yCD; Tue, 17 Dec 2019 09:38:51 +0100 (CET) Received: from Exchangemail-eme6.itn.ftgroup (unknown [xx.xx.13.35]) by opfednr01.francetelecom.fr (ESMTP service) with ESMTP id 47cWkz1yLKzDq7P; Tue, 17 Dec 2019 09:38:51 +0100 (CET) Received: from OPEXCAUBM21.corporate.adroot.infra.ftgroup ([fe80::d42b:2e80:86c2:5905]) by OPEXCAUBM6C.corporate.adroot.infra.ftgroup ([fe80::f58e:8e9d:ae18:b9e3%21]) with mapi id 14.03.0468.000; Tue, 17 Dec 2019 09:38:51 +0100 From: To: =?utf-8?B?Um9kcmlnbyBNdcOxb3ogTGFyYQ==?= , "lp-wan@ietf.org" CC: "ogimenez@semtech.com" , Sandra Cespedes Thread-Topic: [lp-wan] Implementation of SCHC Thread-Index: AQHVtC76e1pQH+bdIkG0hE7tnfJ/tqe+Am8A Date: Tue, 17 Dec 2019 08:38:50 +0000 Message-ID: <10250_1576571931_5DF8941B_10250_17_1_DA1E4EC3.6D87E%dominique.barthel@orange.com> References: In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: fr-FR X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.7.3.170325 x-originating-ip: [10.114.13.245] Content-Type: multipart/alternative; boundary="_000_DA1E4EC36D87Edominiquebarthelorangecom_" MIME-Version: 1.0 Archived-At: Subject: Re: [lp-wan] Implementation of SCHC X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Dec 2019 08:38:56 -0000 --_000_DA1E4EC36D87Edominiquebarthelorangecom_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 SGVsbG8gUm9kcmlnbywNCg0KVGhhbmtzIGZvciB5b3VyIGludGVyZXN0IGFuZCBmb3IgeW91ciBx 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ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=ackl-io.20150623.gappssmtp.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OyhGrOBLO_HN for ; Tue, 17 Dec 2019 02:44:55 -0800 (PST) Received: from mail-lj1-x229.google.com (mail-lj1-x229.google.com [IPv6:2a00:1450:4864:20::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 300B3120128 for ; Tue, 17 Dec 2019 02:44:55 -0800 (PST) Received: by mail-lj1-x229.google.com with SMTP id m6so10377987ljc.1 for ; Tue, 17 Dec 2019 02:44:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ackl-io.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to; bh=IqQ3QcvqUzM76VQ4ZFI5JBfEMVIoSDwMAERpoJK37k0=; b=ZtLDCCbp0P/XTAtL4fdszzj6JhNEuB031D23EWB1npOPvCs3KJ2wLhofvQLpCb+BQM 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APXvYqxDGO/ORMF5p2GZYRWH+ZsoFtgSwf95XMEbXWnaeQKH9BfT86F+kUg1iwjK93tCHpjVhfGsoGrA7AAMksxIIb0= X-Received: by 2002:a2e:7a1a:: with SMTP id v26mr2641146ljc.76.1576579492312; Tue, 17 Dec 2019 02:44:52 -0800 (PST) MIME-Version: 1.0 From: Arunprabhu Kandasamy Date: Tue, 17 Dec 2019 11:44:41 +0100 Message-ID: To: lp-wan , "BARTHEL Dominique IMT/OLPS" , Olivier Gimenez Content-Type: multipart/alternative; boundary="00000000000099b4ea0599e4040f" Archived-At: Subject: [lp-wan] some topics to discuss related to schc-lorawan draft X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Dec 2019 10:45:00 -0000 --00000000000099b4ea0599e4040f Content-Type: text/plain; charset="UTF-8" Hi, I would like to bring a few discussion, that was going around with the lorawan authors, to the ML; Topic 1: The current version of the lorawan draft mandates that the last fragment i.e. All-1 MUST-NOT carry any tile in it. We could, however, have some flexibility here, meaning the last fragment "MAY" carry the last tile in it whenever possible. The advantage we have here is; - we could avoid sending one additional fragment when the last tile is smaller than regular tile size. for example 4 bytes. Since we have configurations in lorawan draft that would result in byte-aligned headers that will not induce padding, having "penultimate tile MUST be a regular size" wouldn't be a problem as well. Having configurations that could lead to padding (non-byte-aligned headers) would enforce borrowing penultimate tile when the last tile is smaller than l2word. But this case is out of the scope for this document. Topic 2(new): Since we don't have a dtag in the headers, it might create some ambiguity in the receiver to manage statemachines for the devices when it receives a new fragmented packet while the inactivity timer is still active. Note that the sender doesn't have the knowledge of the inactivity timer. It would be nice to have a section in the draft to discuss this behavior and probably a solution to overcome it. what are your thoughts? Thanks, Arun --00000000000099b4ea0599e4040f Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi,=C2=A0

I would like to bring= a few discussion, that was going around with the lorawan authors, to the M= L;

Topic 1:
The current version of the lorawan draft mandates tha= t the last fragment i.e. All-1 MUST-NOT carry any tile in it.
We could, = however, have some flexibility here, meaning the last fragment "MAY&qu= ot; carry the last tile in it whenever possible.
The advantage we have = here is; =C2=A0
=C2=A0 - we could avoid sending one additional fragment = when the last tile is smaller than regular tile size. for example 4 bytes.<= br>
Since we have configurations in lorawan draft that would result in b= yte-aligned headers that will not induce padding, having
"penultim= ate tile MUST be a regular size" wouldn't be a problem as well.
Having configurations that could lead to padding (non-byte-aligned he= aders) would enforce borrowing penultimate tile when the last tile is small= er than l2word. But this case is out of the scope for this document.

Topic 2(new):
=C2=A0Since we don't have a dtag in the headers,= it might create some ambiguity in the receiver to manage statemachines for= the devices when it receives a new fragmented packet while the inactivity = timer is still active. Note that the sender doesn't have the knowledge = of the inactivity timer.
It would be nice to have a section in the draft= to discuss this behavior and probably a solution to overcome it.
=C2= =A0


what are your thoughts?=C2=A0


Thanks,
Arun
--00000000000099b4ea0599e4040f-- From nobody Tue Dec 17 07:44:32 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7EF581209C4 for ; Tue, 17 Dec 2019 07:44:31 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.898 X-Spam-Level: X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=ackl-io.20150623.gappssmtp.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id pb5_c13aYKz4 for ; Tue, 17 Dec 2019 07:44:29 -0800 (PST) Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A23A2120856 for ; Tue, 17 Dec 2019 07:44:28 -0800 (PST) Received: by mail-wm1-x329.google.com with SMTP id f129so3705740wmf.2 for ; Tue, 17 Dec 2019 07:44:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ackl-io.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=uWFa9cnpbcCYWHVAyNCpns4LhvqfJhQxgLt2mm7PvAA=; b=edhHvIUaxRCWEKVkSpeCCyGOeDbH89bRaz1D8W2rIBJjXanrGlKkz6z0+1gltSHAT9 I9Z36fyh00F2FMAjRHO+tt7+D2WetOuhOBv4pQk/WevaVZPvQ902fPmAN3pZMhL+9eyg 9y14kuDBrzG8uWECOPFzNFfiC9L0iXwoRZHyjlbnXGsAhLgLtgrbVw//7giZ6SbgHXoX o1uoNjN5y9zFgb6dA0UjEfykFsE6fVkV1mLWleJPK3OwvgnK5UzSVpSrWDq0+YWbwSwV clgDv0KCZF3g9iVq8Y1juVR/wJnf/pGRFPSaf2xZaAm168jsN3/0eavVvTEHL8Y6z2DU QwDg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=uWFa9cnpbcCYWHVAyNCpns4LhvqfJhQxgLt2mm7PvAA=; b=sGexfT+OhcALVCToTuqJj+9+jzd6gsucUBwkR3NexapP6oH9pfDU7/psxtnYb2Kq5h byEBW7pdzBluRaX3zHMQpiBXDW9uGgWAL3GnD5tt8cJyMnlCTbN+smYSNPZmalU80pMe 082B4pBsOG6pUW7Uc4vkieq1vhiZ5WYVc+lU/BJ4g0T/eW+zcboT/ahayeSHE/mY18sB X32JFX8/rZm0ulT3b5Lpja8I9lzK1cR2frjc4vFhgvs5jIT8Q55vMsZz5ib06rlZzzH9 aCWf9N2+9oRh9WS+YTgT/nR4qOTEClz7zU1e9nBnnin+/sZIeGi3coY8Cj36oCSO7hT4 7Nog== X-Gm-Message-State: APjAAAU/GRyR0NrWZk3bwZly4BY4Zj+dOQkZzf5/aQ+2sEYFUmtKMzJk gFWHAQxgpJiaWDyOqE72EB6w32pi+X0EONPKyKqJZQ== X-Google-Smtp-Source: APXvYqzFMuibfOTynyHbQ0h2vVoAsni3dbiJ9eCJcRolSFGjXJLPXVA8sZhIwVRwrAOc5O9ri4i3KcP9Ar89+BrBopw= X-Received: by 2002:a7b:c774:: with SMTP id x20mr5796414wmk.66.1576597466792; Tue, 17 Dec 2019 07:44:26 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Ivaylo Petrov Date: Tue, 17 Dec 2019 16:44:00 +0100 Message-ID: To: Arunprabhu Kandasamy Cc: lp-wan , "BARTHEL Dominique IMT/OLPS" , Olivier Gimenez Content-Type: multipart/alternative; boundary="000000000000f65bd30599e833b5" Archived-At: Subject: Re: [lp-wan] some topics to discuss related to schc-lorawan draft X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Dec 2019 15:44:31 -0000 --000000000000f65bd30599e833b5 Content-Type: text/plain; charset="UTF-8" Hello Arun, Thank you for your email! Could you elaborate on the sentense "Note that the sender doesn't have the knowledge of the inactivity timer". Thanks, Ivaylo CONFIDENTIALITY NOTICE: This email may contain confidential and privileged material for the sole use of the intended recipient(s). It is strictly forbidden to share any part of this message with any third party, without the written consent of the sender. If you have received this message by mistake, please notify the sender immediately by email and delete the message and any file attached to it. Thank you! On Tue, Dec 17, 2019 at 11:45 AM Arunprabhu Kandasamy wrote: > Hi, > > I would like to bring a few discussion, that was going around with the > lorawan authors, to the ML; > > Topic 1: > The current version of the lorawan draft mandates that the last fragment > i.e. All-1 MUST-NOT carry any tile in it. > We could, however, have some flexibility here, meaning the last fragment > "MAY" carry the last tile in it whenever possible. > The advantage we have here is; > - we could avoid sending one additional fragment when the last tile is > smaller than regular tile size. for example 4 bytes. > > Since we have configurations in lorawan draft that would result in > byte-aligned headers that will not induce padding, having > "penultimate tile MUST be a regular size" wouldn't be a problem as well. > > Having configurations that could lead to padding (non-byte-aligned > headers) would enforce borrowing penultimate tile when the last tile is > smaller than l2word. But this case is out of the scope for this document. > > > Topic 2(new): > Since we don't have a dtag in the headers, it might create some ambiguity > in the receiver to manage statemachines for the devices when it receives a > new fragmented packet while the inactivity timer is still active. Note that > the sender doesn't have the knowledge of the inactivity timer. > It would be nice to have a section in the draft to discuss this behavior > and probably a solution to overcome it. > > > > what are your thoughts? > > > Thanks, > Arun > _______________________________________________ > lp-wan mailing list > lp-wan@ietf.org > https://www.ietf.org/mailman/listinfo/lp-wan > --000000000000f65bd30599e833b5 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hello Arun,

Than= k you for your email! Could you elaborate on the sentense "Note that t= he sender doesn't have the knowledge of the inactivity timer".

Thanks,
Ivaylo
<= span style=3D"text-align:justify;color:rgb(34,34,34);font-family:Arial;vert= ical-align:baseline;white-space:pre-wrap">
CONFIDENTIALITY NOTICE: This email may contain confidential and privileged material for th= e sole use of the intended recipient(s).

It is strictly forbidden to share any part of this message with any= third party, without the written consent of the sender.

<= p dir=3D"ltr" style=3D"font-family:Arial;line-height:1.38;margin-top:0pt;ma= rgin-bottom:0pt;text-align:justify">If you have received this message by mistake, please = notify the sender immediately by email and delete the message and any file = attached to it. Thank you!

<= /div>


On Tue, Dec 17, 2019 at 11:45 AM Arunprabhu K= andasamy <arun@ackl.io> wrote:
H= i,=C2=A0

I would like to bring a few discussion,= that was going around with the lorawan authors, to the ML;

Topic 1:=
The current version of the lorawan draft mandates that the last fragmen= t i.e. All-1 MUST-NOT carry any tile in it.
We could, however, have some= flexibility here, meaning the last fragment "MAY" carry the last= tile in it whenever possible.
The advantage we have here is; =C2=A0=C2=A0 - we could avoid sending one additional fragment when the last tile= is smaller than regular tile size. for example 4 bytes.

Since we ha= ve configurations in lorawan draft that would result in byte-aligned header= s that will not induce padding, having
"penultimate tile MUST be a= regular size" wouldn't be a problem as well.

Having confi= gurations that could lead to padding (non-byte-aligned headers) would enfor= ce borrowing penultimate tile when the last tile is smaller than l2word. Bu= t this case is out of the scope for this document.


Topic 2(new):=
=C2=A0Since we don't have a dtag in the headers, it might create s= ome ambiguity in the receiver to manage statemachines for the devices when = it receives a new fragmented packet while the inactivity timer is still act= ive. Note that the sender doesn't have the knowledge of the inactivity = timer.
It would be nice to have a section in the draft to discuss this b= ehavior and probably a solution to overcome it.
=C2=A0


what = are your thoughts?=C2=A0


Thanks,
Arun
_______________________________________________
lp-wan mailing list
lp-wan@ietf.org https://www.ietf.org/mailman/listinfo/lp-wan
--000000000000f65bd30599e833b5-- From nobody Tue Dec 17 07:57:53 2019 Return-Path: X-Original-To: lp-wan@ietf.org Delivered-To: lp-wan@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id B2F95120856; Tue, 17 Dec 2019 07:57:46 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: IESG Secretary To: "IETF-Announce" Cc: lp-wan@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.113.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <157659826621.26449.7839207217190604318@ietfa.amsl.com> Date: Tue, 17 Dec 2019 07:57:46 -0800 Archived-At: Subject: [lp-wan] IPv6 over Low Power Wide-Area Networks (lpwan) WG Virtual Meeting: 2020-01-08 X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Dec 2019 15:57:47 -0000 The IPv6 over Low Power Wide-Area Networks (lpwan) Working Group will hold a virtual interim meeting on 2020-01-08 from 16:00 to 17:00 Europe/Paris. Agenda: Connection details ------------------ • Date: 7-8am US Pacific, 4pm CET: https://www.worldtimebuddy.com/?qm=1&lid=100,12,5392171,1850147&h=100&date=2020-01-08&sln=15-16 Meeting link: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 Meeting number: 201 266 501 Password: txCGJTrS (89245877 from phones) Agenda ------ The final agenda will be announced one week before the meeting. The general agenda for all meetings is as follows: [16:05] Administrivia [ 5min] o Note-Well, Scribes, Agenda Bashing o Status of drafts [16:10] Status of SCHC draft (CoAP) [10min] [16:20] Technology-specific documents [25min] [16:45] Other Charter item documents [15min] [17:00] AOB [ 0min] Information about remote participation: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 From nobody Tue Dec 17 07:58:13 2019 Return-Path: X-Original-To: lp-wan@ietf.org Delivered-To: lp-wan@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 5503B120A3F; Tue, 17 Dec 2019 07:58:03 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: IESG Secretary To: "IETF-Announce" Cc: lp-wan@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.113.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <157659828327.26404.15988025209284103473@ietfa.amsl.com> Date: Tue, 17 Dec 2019 07:58:03 -0800 Archived-At: Subject: [lp-wan] IPv6 over Low Power Wide-Area Networks (lpwan) WG Virtual Meeting: 2020-01-22 X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Dec 2019 15:58:07 -0000 The IPv6 over Low Power Wide-Area Networks (lpwan) Working Group will hold a virtual interim meeting on 2020-01-22 from 16:00 to 17:00 Europe/Paris. Agenda: Connection details ------------------ • Date: 7-8am US Pacific, 4pm CET: https://www.worldtimebuddy.com/?qm=1&lid=100,12,5392171,1850147&h=100&date=2020-01-22&sln=15-16 Meeting link: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 Meeting number: 201 266 501 Password: txCGJTrS (89245877 from phones) Agenda ------ The final agenda will be announced one week before the meeting. The general agenda for all meetings is as follows: [16:05] Administrivia [ 5min] o Note-Well, Scribes, Agenda Bashing o Status of drafts [16:10] Status of SCHC draft (CoAP) [10min] [16:20] Technology-specific documents [25min] [16:45] Other Charter item documents [15min] [17:00] AOB [ 0min] Information about remote participation: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 From nobody Tue Dec 17 07:58:20 2019 Return-Path: X-Original-To: lp-wan@ietf.org Delivered-To: lp-wan@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id A02FF120A34; Tue, 17 Dec 2019 07:58:15 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: IESG Secretary To: "IETF-Announce" Cc: lp-wan@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.113.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <157659829558.26474.10296891104758616705@ietfa.amsl.com> Date: Tue, 17 Dec 2019 07:58:15 -0800 Archived-At: Subject: [lp-wan] IPv6 over Low Power Wide-Area Networks (lpwan) WG Virtual Meeting: 2020-02-05 X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Dec 2019 15:58:19 -0000 The IPv6 over Low Power Wide-Area Networks (lpwan) Working Group will hold a virtual interim meeting on 2020-02-05 from 16:00 to 17:00 Europe/Paris. Agenda: Connection details ------------------ • Date: 7-8am US Pacific, 4pm CET: https://www.worldtimebuddy.com/?qm=1&lid=100,12,5392171,1850147&h=100&date=2020-02-05&sln=15-16 Meeting link: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 Meeting number: 201 266 501 Password: txCGJTrS (89245877 from phones) Agenda ------ The final agenda will be announced one week before the meeting. The general agenda for all meetings is as follows: [16:05] Administrivia [ 5min] o Note-Well, Scribes, Agenda Bashing o Status of drafts [16:10] Status of SCHC draft (CoAP) [10min] [16:20] Technology-specific documents [25min] [16:45] Other Charter item documents [15min] [17:00] AOB [ 0min] Information about remote participation: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 From nobody Tue Dec 17 07:58:33 2019 Return-Path: X-Original-To: lp-wan@ietf.org Delivered-To: lp-wan@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 2ED99120A99; Tue, 17 Dec 2019 07:58:29 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: IESG Secretary To: "IETF-Announce" Cc: lp-wan@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.113.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <157659830915.26474.17398107278921638415@ietfa.amsl.com> Date: Tue, 17 Dec 2019 07:58:29 -0800 Archived-At: Subject: [lp-wan] IPv6 over Low Power Wide-Area Networks (lpwan) WG Virtual Meeting: 2020-02-19 X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Dec 2019 15:58:33 -0000 The IPv6 over Low Power Wide-Area Networks (lpwan) Working Group will hold a virtual interim meeting on 2020-02-19 from 16:00 to 17:00 Europe/Paris. Agenda: Connection details ------------------ • Date: 7-8am US Pacific, 4pm CET: https://www.worldtimebuddy.com/?qm=1&lid=100,12,5392171,1850147&h=100&date=2020-02-19&sln=15-16 Meeting link: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 Meeting number: 201 266 501 Password: txCGJTrS (89245877 from phones) Agenda ------ The final agenda will be announced one week before the meeting. The general agenda for all meetings is as follows: [16:05] Administrivia [ 5min] o Note-Well, Scribes, Agenda Bashing o Status of drafts [16:10] Status of SCHC draft (CoAP) [10min] [16:20] Technology-specific documents [25min] [16:45] Other Charter item documents [15min] [17:00] AOB [ 0min] Information about remote participation: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 From nobody Tue Dec 17 07:58:58 2019 Return-Path: X-Original-To: lp-wan@ietf.org Delivered-To: lp-wan@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 384371209FE; Tue, 17 Dec 2019 07:58:53 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: IESG Secretary To: "IETF-Announce" Cc: lp-wan@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.113.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <157659833320.26478.14098347685987113715@ietfa.amsl.com> Date: Tue, 17 Dec 2019 07:58:53 -0800 Archived-At: Subject: [lp-wan] IPv6 over Low Power Wide-Area Networks (lpwan) WG Virtual Meeting: 2020-03-04 X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Dec 2019 15:58:56 -0000 The IPv6 over Low Power Wide-Area Networks (lpwan) Working Group will hold a virtual interim meeting on 2020-03-04 from 16:00 to 17:00 Europe/Paris. Agenda: Connection details ------------------ • Date: 7-8am US Pacific, 4pm CET: https://www.worldtimebuddy.com/?qm=1&lid=100,12,5392171,1850147&h=100&date=2020-03-04&sln=15-16 Meeting link: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 Meeting number: 201 266 501 Password: txCGJTrS (89245877 from phones) Agenda ------ The final agenda will be announced one week before the meeting. The general agenda for all meetings is as follows: [16:05] Administrivia [ 5min] o Note-Well, Scribes, Agenda Bashing o Status of drafts [16:10] Status of SCHC draft (CoAP) [10min] [16:20] Technology-specific documents [25min] [16:45] Other Charter item documents [15min] [17:00] AOB [ 0min] Information about remote participation: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 From nobody Tue Dec 17 07:59:16 2019 Return-Path: X-Original-To: lp-wan@ietf.org Delivered-To: lp-wan@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id AA857120A33; Tue, 17 Dec 2019 07:59:08 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: IESG Secretary To: "IETF-Announce" Cc: lp-wan@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.113.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <157659834867.26377.3683113970176976759@ietfa.amsl.com> Date: Tue, 17 Dec 2019 07:59:08 -0800 Archived-At: Subject: [lp-wan] IPv6 over Low Power Wide-Area Networks (lpwan) WG Virtual Meeting: 2020-03-18 X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Dec 2019 15:59:12 -0000 The IPv6 over Low Power Wide-Area Networks (lpwan) Working Group will hold a virtual interim meeting on 2020-03-18 from 16:00 to 17:00 Europe/Paris. Agenda: Connection details ------------------ • Date: 7-8am US Pacific, 4pm CET: https://www.worldtimebuddy.com/?qm=1&lid=100,12,5392171,1850147&h=100&date=2020-03-18&sln=15-16 Meeting link: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 Meeting number: 201 266 501 Password: txCGJTrS (89245877 from phones) Agenda ------ The final agenda will be announced one week before the meeting. The general agenda for all meetings is as follows: [16:05] Administrivia [ 5min] o Note-Well, Scribes, Agenda Bashing o Status of drafts [16:10] Status of drafts [10min] [16:20] IETF 107 orgnization [20min] [16:40] Hackathon / other last minute org [15min] [16:55] AOB [ 5min] Information about remote participation: https://cisco.webex.com/cisco/j.php?MTID=me91d56b37454056b8c5ef3b102b9da50 From nobody Tue Dec 17 12:42:28 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 34B5212089F for ; Tue, 17 Dec 2019 12:42:23 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.298 X-Spam-Level: X-Spam-Status: No, score=-4.298 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=ing.uchile.cl header.b=czTQQQEf; dkim=pass (1024-bit key) header.d=ing.uchile.cl header.b=czTQQQEf Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UzCXzYbaBeBm for ; Tue, 17 Dec 2019 12:42:19 -0800 (PST) Received: from mail.cec.uchile.cl (mail1.cec.uchile.cl [200.9.100.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id DC72B120D60 for ; Tue, 17 Dec 2019 12:42:07 -0800 (PST) Received: from mail.cec.uchile.cl (localhost [127.0.0.1]) by mail.cec.uchile.cl (Postfix) with ESMTP id 2CE1FA1EAB for ; Tue, 17 Dec 2019 17:42:04 -0300 (-03) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.cec.uchile.cl 2CE1FA1EAB Authentication-Results: mail1.cec.uchile.cl; dmarc=pass (p=none dis=none) header.from=ing.uchile.cl Authentication-Results: mail1.cec.uchile.cl; spf=pass smtp.mailfrom=rmunozlara@ing.uchile.cl DKIM-Filter: OpenDKIM Filter v2.11.0 mail.cec.uchile.cl 2CE1FA1EAB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ing.uchile.cl; s=default; t=1576615324; bh=0n1Yc7nFToHey3L3pZjZ9rUUu6L3Fxy10WmvsaB2mOM=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=czTQQQEfHKkCcSKiscUl8jg1EsGYB21MMB7vBHgkcUwrR3EY0Vj5wO1Twy6wmA5mF +PtbmN+oUlKOF9yL5ahzatUuhX94pcd2EXhn4pVtAALe1hfy/3DPdD5YnZqyTFMy5+ mV0Uc5lWAxG6wUSTRjb9kgbx1Te9Rkrh8Tm17UR0= Received: from mail-ua1-f51.google.com (mail-ua1-f51.google.com [209.85.222.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (not verified)) by mail.cec.uchile.cl (Postfix) with ESMTPSA id AAB34A0536 for ; Tue, 17 Dec 2019 17:42:03 -0300 (-03) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.cec.uchile.cl AAB34A0536 Authentication-Results: mail1.cec.uchile.cl; dmarc=pass (p=none dis=none) header.from=ing.uchile.cl Authentication-Results: mail1.cec.uchile.cl; spf=pass smtp.mailfrom=rmunozlara@ing.uchile.cl DKIM-Filter: OpenDKIM Filter v2.11.0 mail.cec.uchile.cl AAB34A0536 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ing.uchile.cl; s=default; t=1576615324; bh=0n1Yc7nFToHey3L3pZjZ9rUUu6L3Fxy10WmvsaB2mOM=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=czTQQQEfHKkCcSKiscUl8jg1EsGYB21MMB7vBHgkcUwrR3EY0Vj5wO1Twy6wmA5mF +PtbmN+oUlKOF9yL5ahzatUuhX94pcd2EXhn4pVtAALe1hfy/3DPdD5YnZqyTFMy5+ mV0Uc5lWAxG6wUSTRjb9kgbx1Te9Rkrh8Tm17UR0= Received: by mail-ua1-f51.google.com with SMTP id y23so3966139ual.2 for ; Tue, 17 Dec 2019 12:42:03 -0800 (PST) X-Gm-Message-State: APjAAAVc0B7bEcOVtjbY5ZwtXva/n9J677NMWd6eMT2gCS5zPywDX+yV rgvLYmAE7K7XYbgIVkEgSCkE1nYhC9//gUtAggg= X-Google-Smtp-Source: APXvYqy90dt2vLHJw1vOrLpvvLXdnjn9d85q5Zv0xKNq/MqTUqPxJJqpt6Ajo8SSLdRccEHLL5NhFmUqzRI4Lm8UHYw= X-Received: by 2002:a9f:2e03:: with SMTP id t3mr4696507uaj.119.1576615321903; Tue, 17 Dec 2019 12:42:01 -0800 (PST) MIME-Version: 1.0 References: <324067fd222f4e3f844aa938b43a34fd@semtech.com> In-Reply-To: <324067fd222f4e3f844aa938b43a34fd@semtech.com> From: =?UTF-8?Q?Rodrigo_Mu=C3=B1oz_Lara?= Date: Tue, 17 Dec 2019 17:41:51 -0300 X-Gmail-Original-Message-ID: Message-ID: To: Olivier Gimenez Cc: "lp-wan@ietf.org" , Sandra Cespedes Content-Type: multipart/alternative; boundary="00000000000035ac790599ec5c34" X-Virus-Scanned: ClamAV using ClamSMTP Archived-At: Subject: Re: [lp-wan] Implementation of SCHC X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Dec 2019 20:42:27 -0000 --00000000000035ac790599ec5c34 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thanks Olivier My comments below 1. The schc-over-lorawan-05 document will introduce =E2=80=9CPenultim= ate tile must be equal to the regular size.=E2=80=9D. I hope to publish it this week= , until then you can find our working document here [Rodrigo] Thanks, I have considered it in my development 2. Dominique answered while I was writing this email [Rodrigo] Thanks again 3. The profiles does specify that the device must wait for an ACK between each windows. I think the idea of the author several month ago was to reduce memory required by the implementation, as the device only need to keep one window in RAM; but I am also wondering the relevance of it. Any thoughts ? In the mean time I will ask him [Rodrigo] I don't understand why the authors call this mode ACK-On-Error if the behavior is similar to the ACK-Always mode. In LoRaWAN you always have to wait for an ACK to finish a window. This breaks the ACK-On-Error mode definition. El mar., 17 dic. 2019 a las 5:49, Olivier Gimenez () escribi=C3=B3: > Hi Rodrigo, > > > > 1. The schc-over-lorawan-05 document will introduce =E2=80=9CPenult= imate > tile must be equal to the regular size.=E2=80=9D. I hope to publish it th= is week, > until then you can find our working document here > > > 2. Dominique answered while I was writing this email > > 3. The profiles does specify that the device must wait for an ACK > between each windows. I think the idea of the author several month ago w= as > to reduce memory required by the implementation, as the device only need = to > keep one window in RAM; but I am also wondering the relevance of it. Any > thoughts ? In the mean time I will ask him > > > > Best regards > > Olivier > > To view our privacy policy, including the types of personal information w= e > collect, process and share, and the rights and options you have in this > respect, see www.semtech.com/legal. > --00000000000035ac790599ec5c34 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Thanks=C2=A0Olivier

My comments below

1.=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0The schc-over-loraw= an-05 document will introduce =E2=80=9CPenultimate tile must be equal to th= e regular size.=E2=80=9D. I hope to publish it this week, until then you ca= n find our working document=C2=A0here=C2=A0[Rodr= igo] Thanks,=C2=A0I have considered it in my development


2.= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Dom= inique answered while I was writing this email [Rodrigo] = Thanks again

=

3.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0The profiles does specify that the de= vice must wait for an ACK between each windows.=C2=A0 I think the idea of t= he author several month ago was to reduce memory required by the implementa= tion, as the device only need to keep one window in RAM; but I am also wond= ering the relevance of it. Any thoughts ? In the mean time I will ask him <= /span>[Rodrigo]=C2=A0I don't understand why the authors c= all this mode ACK-On-Error if the behavior is similar to the ACK-Always mod= e. In LoRaWAN you always have to wait for an ACK to finish a window. This b= reaks the ACK-On-Error mode definition.


El mar., 17 = dic. 2019 a las 5:49, Olivier Gimenez (<ogimenez@semtech.com>) escribi=C3=B3:

Hi Rodrigo,

=C2=A0

1.=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0 The schc-over-lorawan-05 document will = introduce =E2=80=9CPenultimate tile must be equal to the regular size.=E2= =80=9D. I hope to publish it this week, until then you can find our working document here

2.=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0 Dominique answered while I was writing = this email

3.=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0 The profiles does specify that the devi= ce must wait for an ACK between each windows.=C2=A0 I think the idea of the= author several month ago was to reduce memory required by the implementation, as the devi= ce only need to keep one window in RAM; but I am also wondering the relevan= ce of it. Any thoughts ? In the mean time I will ask him

=C2=A0

Best regards

Olivier


To view our privacy policy, including the types of personal information we = collect, process and share, and the rights and options you have in this res= pect, see www.se= mtech.com/legal.
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Tue, 17 Dec 2019 12:44:11 -0800 (PST) MIME-Version: 1.0 References: <10250_1576571931_5DF8941B_10250_17_1_DA1E4EC3.6D87E%dominique.barthel@orange.com> In-Reply-To: <10250_1576571931_5DF8941B_10250_17_1_DA1E4EC3.6D87E%dominique.barthel@orange.com> From: =?UTF-8?Q?Rodrigo_Mu=C3=B1oz_Lara?= Date: Tue, 17 Dec 2019 17:44:00 -0300 X-Gmail-Original-Message-ID: Message-ID: To: dominique.barthel@orange.com Cc: "lp-wan@ietf.org" , "ogimenez@semtech.com" , Sandra Cespedes Content-Type: multipart/alternative; boundary="000000000000ef6f6f0599ec63a7" X-Virus-Scanned: ClamAV using ClamSMTP Archived-At: Subject: Re: [lp-wan] Implementation of SCHC X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Dec 2019 20:44:18 -0000 --000000000000ef6f6f0599ec63a7 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Dominique My answer below El mar., 17 dic. 2019 a las 5:38, escribi=C3= =B3: > Hello Rodrigo, > > Thanks for your interest and for your questions, you're hitting totally > relevant points. > > As much as possible, please use > "draft-ietf-lpwan-ipv6-static-context-hc-24" as a reference for the > generic SCHC draft. > If you have studied =E2=80=9322 in depth, you can quickly check for updat= es from > =E2=80=9322 in the source code by looking at > https://github.com/lp-wan/ip-compression/compare/draft-22...draft-24 > > Regarding the SCHC-over-LoRaWAN draft, as much as possible, please use th= e > latest branch, which you can identify on > https://github.com/Acklio/schc-over-lorawan/network > Currently, it's "05/comments", and you can read GitHub's rendition of the > markdown source code at > https://github.com/Acklio/schc-over-lorawan/blob/05/comments/draft-ietf-l= pwan-schc-over-lorawan.md > > Having said that, here are answers to two of your questions > > 1.The draft "draft-ietf-lpwan-ipv6-static-context-hc-22" indicates tha= t > in the profile of each technology the penultimate Tile size must be > defined. On the other hand, in the draft > "draft-ietf-lpwan-schc-over-lorawan-04" there is no definition in this > regard. Can I consider that the penultimate tile size is the size of a > regular tile? > [DB] Currently, > https://github.com/Acklio/schc-over-lorawan/blob/05/comments/draft-ietf-l= pwan-schc-over-lorawan.md says > "Penultimate tile MUST be equal to the regular size." > I know this is being discussed between the authors of both drafts, at the > time of this writing. > I guess we should have this discussion on the ML, so that you can take > part to it. > [Rodrigo] Thanks, I have considered it in my development. Can you make me part of the discussion? > > > 2. In section 8.4.3.1, the draft > "draft-ietf-lpwan-ipv6-static-context-hc-22", indicates that: "A Rule MUS= T > NOT be selected if the values of M and WINDOW_SIZE for that Rule are such > that the SCHC Packet cannot be fragmented in (2 ^ M) * WINDOW_SIZE tiles = or > less.. ". Does this mean that the SCHC packet cannot be fragmented? > [DB] Indeed, if no fragmentation rule is found that has appropriate > tile_size, M and WINDOW_SIZE values, the SCHC Packet cannot be fragmented= , > and therefore probably not sent. However, it probably means that an > incorrect MTU was advertised. > [Rodrigo] Thanks, I have considered it in my development > > > 3. > I'll leave this one to the SCHC-over-LoRaWAN authors. > > Best regards > > Dominique > > De : lp-wan on behalf of Rodrigo Mu=C3=B1oz Lar= a < > rmunozlara@ing.uchile.cl> > Date : Monday 16 December 2019 17:36 > =C3=80 : "lp-wan@ietf.org" > Cc : "ogimenez@semtech.com" , Sandra Cespedes < > scespedes@ing.uchile.cl> > Objet : [lp-wan] Implementation of SCHC > > Dear Author, > > I have three questions about the draft: > > > 1. The draft "draft-ietf-lpwan-ipv6-static-context-hc-22" indicates > that in the profile of each technology the penultimate Tile size must = be > defined. On the other hand, in the draft > "draft-ietf-lpwan-schc-over-lorawan-04" there is no definition in this > regard. Can I consider that the penultimate tile size is the size of a > regular tile? > 2. In section 8.4.3.1, the draft > "draft-ietf-lpwan-ipv6-static-context-hc-22", indicates that: "A Rule = MUST > NOT be selected if the values of M and WINDOW_SIZE for that Rule are s= uch > that the SCHC Packet cannot be fragmented in (2 ^ M) * WINDOW_SIZE til= es or > less.. ". Does this mean that the SCHC packet cannot be fragmented? > 3. In section 5.6.2, the draft "draft-ietf-lpwan-schc-over-lorawan-04" > indicates: "Retransmission and inactivity timers: LoRaWAN end-devices = do > not implement a" retransmission timer. "At the end of a window or a > fragmentation session, corresponding ACK (s) is (are) transmitted by t= he > network gateway (LoRaWAN application server) in the RX1 or RX2 receive= slot > of end-device. the end of its RX windows, it sends an all-0 (or an all= -1) > fragment with no payload to request an SCHC ACK retransmission. and MA= Y be > implements an "inactivity timer." The default RECOMMENDED duration of = this > timer is 12 hours. This value is mainly driven by application requirem= ents > and MAY be changed by the application. ". This indicates that the Rece= iver > should send an ACK at the end of a window and if it does not, the > transmitter will send a SCHC ACK retransmission. Is this operation not= the > same as ACK-Always (remember that we are in ACK-on-error mode)? > > > Thanks > > -- > *Rodrigo Mu=C3=B1oz Lara* > > *Universidad de Chile * > > _________________________________________________________________________= ________________________________________________ > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > Thank you. > > --000000000000ef6f6f0599ec63a7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Dominique

My answer= below



El mar., 17 dic. 2019 a las 5:38,= <dominique.barthel@oran= ge.com> escribi=C3=B3:
Hello Rodrigo,

Thanks for your interest and for your questions, you're hitting to= tally relevant points.

As much as possible, please use =C2=A0"draft-ietf-lpwan-ipv6-stat= ic-context-hc-24" as a reference for the generic SCHC draft.
If you have studied =E2=80=9322 in depth, you can quickly check for up= dates from =E2=80=9322 in the source code by looking at https://github.com/lp-wan/ip-compression/compare/dr= aft-22...draft-24 =C2=A0

Regarding the SCHC-over-LoRaWAN draft, as much as possible, please use= the latest branch, which you can identify on https://github.com/Acklio/schc-over-lorawan/network=C2=A0
Currently, it's "05/comments", and you can read GitHub&#= 39;s rendition of the markdown source code at=C2=A0https://github.com/Acklio/schc-over-lorawan/b= lob/05/comments/draft-ietf-lpwan-schc-over-lorawan.md

Having said that, here are answers to two of your questions
> =C2=A01.The draft "draft-ietf-lpwan-ipv6-static-context-hc-2= 2" indicates that in the profile of each technology the penultimate Ti= le size must be defined. On the other hand, in the draft "draft-ietf-l= pwan-schc-over-lorawan-04" there is no definition in this regard. Can I consider that the penultimate tile size is the size of a reg= ular tile?
[DB] Currently,=C2=A0https://github.com/Acklio/schc-over-lorawan/blob/05/comments/draft-iet= f-lpwan-schc-over-lorawan.md=C2=A0says "Penultimate tile MUST be equal to the regular size."
I know this is being discussed between the authors of both drafts, at = the time of this writing.
I guess we should have this discussion on the ML, so that you can take= part to it.

[Rodrigo] Thanks,=C2= =A0I have considered it in my development.=C2=A0= Can you make me part of the discussion?

=C2=A0

> 2. In section 8.4.3.1, the draft "draft-ietf-lpwan-ipv6-stat= ic-context-hc-22", indicates that: "A Rule MUST NOT be selected i= f the values of M and WINDOW_SIZE for that Rule are such that the SCHC Pack= et cannot be fragmented in (2 ^ M) * WINDOW_SIZE tiles or less.. ". Does this mean that the SCHC packet cannot be fragmented= ?
[DB] Indeed, if no fragmentation rule is found that has appropriate ti= le_size, M and WINDOW_SIZE values, the SCHC Packet cannot be fragmented, an= d therefore probably not sent. However, it probably means that an incorrect= MTU was advertised.
<= span style=3D"font-size:11pt;font-family:Calibri,sans-serif">[Rodrigo] Than= ks,=C2=A0I have considered it in my development=C2=A0<= /font>

> 3.
I'll leave this one to the SCHC-over-LoRaWAN authors.

Best regards

Dominique

De=C2=A0: lp-wan <lp-wan-bounces@ietf.org&= gt; on behalf of Rodrigo Mu=C3=B1oz Lara <rmunozlara@ing.uchile.cl>
Date=C2=A0: Monday 16 December 2019= 17:36
=C3=80=C2=A0: "lp-wan@ietf.org" <lp-wan@ietf.org>
Cc=C2=A0: "ogimenez@semtech.com" <<= a href=3D"mailto:ogimenez@semtech.com" target=3D"_blank">ogimenez@semtech.c= om>, Sandra Cespedes <scespedes@ing.uchile.cl>
Objet=C2=A0: [lp-wan] Implementatio= n of SCHC

Dear Author,=C2=A0=C2=A0

I have three questions about the draft:

  1. The draft "draft-ietf-lpwan-ipv6-static= -context-hc-22" indicates that in the profile of each technology the p= enultimate Tile size must be defined. On the other hand, in the draft "= ;draft-ietf-lpwan-schc-over-lorawan-04" there is no definition in this regard. Can I consider that the penultimate tile siz= e is the size of a regular tile?
  2. In sect= ion 8.4.3.1, the draft "draft-ietf-lpwan-ipv6-static-context-hc-22&quo= t;, indicates that: "A Rule MUST NOT be selected if the values of M an= d WINDOW_SIZE for that Rule are such that the SCHC Packet cannot be fragmen= ted in (2 ^ M) * WINDOW_SIZE tiles or less.. ". Does this mean that the SCHC pack= et cannot be fragmented?
  3. In section 5.6.= 2, the draft "draft-ietf-lpwan-schc-over-lorawan-04" indicates: &= quot;Retransmission and inactivity timers: LoRaWAN end-devices do not imple= ment a" retransmission timer. "At the end of a window or a fragme= ntation session, corresponding ACK (s) is (are) transmitted by the network gateway (LoRaWAN= application server) in the RX1 or RX2 receive slot of end-device. the end = of its RX windows, it sends an all-0 (or an all-1) fragment with no payload= to request an SCHC ACK retransmission. and MAY be implements an "inactivity timer." The default RECOMME= NDED duration of this timer is 12 hours. This value is mainly driven by app= lication requirements and MAY be changed by the application. ". This i= ndicates that the Receiver should send an ACK at the end of a window and if it does not, the transmitter will send a SCHC A= CK retransmission. Is this operation not the same as ACK-Always (remember t= hat we are in ACK-on-error mode)?

Thanks

--
Rodrigo Mu=C3=B1oz Lara
Universidad de Chile

 
______________________________________________________________________=
___________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations confiden=
tielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu=
 ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les message=
s electroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.

This message and its attachments may contain confidential or privileged inf=
ormation that may be protected by law;
they should not be distributed, used or copied without authorisation.
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.
As emails may be altered, Orange is not liable for messages that have been =
modified, changed or falsified.
Thank you.
--000000000000ef6f6f0599ec63a7-- From nobody Tue Dec 17 23:03:40 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5C3661208D2 for ; Tue, 17 Dec 2019 23:03:21 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=imt-atlantique.fr Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ntbbfjRdSlAz for ; Tue, 17 Dec 2019 23:03:17 -0800 (PST) Received: from zproxy120.enst.fr (zproxy120.enst.fr [IPv6:2001:660:330f:2::c1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7D422120046 for ; Tue, 17 Dec 2019 23:03:17 -0800 (PST) Received: from localhost (localhost [IPv6:::1]) by zproxy120.enst.fr (Postfix) with ESMTP id 1881580A51 for ; Wed, 18 Dec 2019 08:03:16 +0100 (CET) Received: from zproxy120.enst.fr ([IPv6:::1]) by localhost (zproxy120.enst.fr [IPv6:::1]) (amavisd-new, port 10032) with ESMTP id o-U1EN3pevww for ; Wed, 18 Dec 2019 08:03:15 +0100 (CET) Received: from localhost (localhost [IPv6:::1]) by zproxy120.enst.fr (Postfix) with ESMTP id 5734180FD3 for ; Wed, 18 Dec 2019 08:03:15 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.10.3 zproxy120.enst.fr 5734180FD3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=imt-atlantique.fr; s=50EA75E8-DE22-11E6-A6DE-0662BA474D24; t=1576652595; bh=aBd5pm0FAUwgor3xyBC+b+paL8j/fR2gBb0y/7s2k9A=; h=MIME-Version:From:Date:Message-ID:To; b=clhK/NxH5j66mznjlx+cN1CX90k9CWYQGkOfRmGbLo2UpOgu7j1Xsd5iuPbfvacBe IIIRnBJNKIr994E+Jb8sYOszscTm3NpO2CUXY+IuT0yCfL6eiVIovlwbEbjILVt3hP 1YpkDrPczjYh1fW/KeYkec2JX5hhfbCnTpFyIBoE= X-Virus-Scanned: amavisd-new at zproxy120.enst.fr Received: from zproxy120.enst.fr ([IPv6:::1]) by localhost (zproxy120.enst.fr [IPv6:::1]) (amavisd-new, port 10026) with ESMTP id 1RD1BwFsSg3n for ; Wed, 18 Dec 2019 08:03:15 +0100 (CET) Received: from mail-yb1-f178.google.com (mail-yb1-f178.google.com [209.85.219.178]) by zproxy120.enst.fr (Postfix) with ESMTPSA id F133C80A51 for ; Wed, 18 Dec 2019 08:03:14 +0100 (CET) Received: by mail-yb1-f178.google.com with SMTP id b12so375686ybg.6 for ; Tue, 17 Dec 2019 23:03:14 -0800 (PST) X-Gm-Message-State: APjAAAVZThZ1N4r5BwnCykOClbwaVH48DqKJucSESWkC+MRYEZ3mxum4 UGGQxvi1u1jkLw6JwO33eWJBybHSqeW+2pZrr5A= X-Google-Smtp-Source: APXvYqyHe+jsrg81SFtLdI2p0mjHd3pSMMQbl43gXlqEaOnEn9iXAeY4YFtRZlVUeFnQhHe6Wb/SYIGMEmTpeRnrjCE= X-Received: by 2002:a25:9cc7:: with SMTP id z7mr695857ybo.309.1576652593725; Tue, 17 Dec 2019 23:03:13 -0800 (PST) MIME-Version: 1.0 References: <324067fd222f4e3f844aa938b43a34fd@semtech.com> In-Reply-To: From: Laurent Toutain Date: Wed, 18 Dec 2019 08:02:37 +0100 X-Gmail-Original-Message-ID: Message-ID: To: =?UTF-8?Q?Rodrigo_Mu=C3=B1oz_Lara?= Cc: Olivier Gimenez , "lp-wan@ietf.org" , Sandra Cespedes Content-Type: multipart/alternative; boundary="000000000000c887f90599f509f2" Archived-At: Subject: Re: [lp-wan] Implementation of SCHC X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 07:03:22 -0000 --000000000000c887f90599f509f2 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Rodrigo, On Tue, Dec 17, 2019 at 9:43 PM Rodrigo Mu=C3=B1oz Lara wrote: > Thanks Olivier > > My comments below > > 1. The schc-over-lorawan-05 document will introduce =E2=80=9CPenult= imate > tile must be equal to the regular size.=E2=80=9D. I hope to publish it th= is week, > until then you can find our working document here > > [Rodrigo] Thanks, I have considered it in my development > > > 2. Dominique answered while I was writing this email [Rodrigo] > Thanks again > > 3. The profiles does specify that the device must wait for an ACK > between each windows. I think the idea of the author several month ago w= as > to reduce memory required by the implementation, as the device only need = to > keep one window in RAM; but I am also wondering the relevance of it. Any > thoughts ? In the mean time I will ask him [Rodrigo] I don't understand > why the authors call this mode ACK-On-Error if the behavior is similar to > the ACK-Always mode. In LoRaWAN you always have to wait for an ACK to > finish a window. This breaks the ACK-On-Error mode definition. > I don't know all the details of the LoRa SCHC draft, but in SCHC Ack are not synchronized with data and can be sent at any time. With LoRa two behaviors are possible, one is to send all the fragments and wait for ack only after the All-1 has been sent, the other is to wait for Ack after each All-*, it does not mean that the sender will send something (ie if the bitmap is full there is no ack) but it can be viewed as a rendez vous point between the sender and the receiver. Laurent > > El mar., 17 dic. 2019 a las 5:49, Olivier Gimenez (= ) > escribi=C3=B3: > >> Hi Rodrigo, >> >> >> >> 1. The schc-over-lorawan-05 document will introduce =E2=80=9CPenul= timate >> tile must be equal to the regular size.=E2=80=9D. I hope to publish it t= his week, >> until then you can find our working document here >> >> >> 2. Dominique answered while I was writing this email >> >> 3. The profiles does specify that the device must wait for an ACK >> between each windows. I think the idea of the author several month ago = was >> to reduce memory required by the implementation, as the device only need= to >> keep one window in RAM; but I am also wondering the relevance of it. Any >> thoughts ? In the mean time I will ask him >> >> >> >> Best regards >> >> Olivier >> >> To view our privacy policy, including the types of personal information >> we collect, process and share, and the rights and options you have in th= is >> respect, see www.semtech.com/legal. >> > _______________________________________________ > lp-wan mailing list > lp-wan@ietf.org > https://www.ietf.org/mailman/listinfo/lp-wan > --000000000000c887f90599f509f2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Rodrigo,

On Tue, Dec 17, 2019 at 9= :43 PM Rodrigo Mu=C3=B1oz Lara <rmunozlara@ing.uchile.cl> wrote:
Thanks=C2=A0Olivier

My comments below

1.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= The schc-over-lorawan-05 document will introdu= ce =E2=80=9CPenultimate tile must be equal to the regular size.=E2=80=9D. I= hope to publish it this week, until then you can find our working document= =C2=A0here=C2=A0[Rodrigo] Thanks,=C2=A0<= u>I have considered it in my development


2.<= span style=3D"font-variant-numeric:normal;font-variant-east-asian:normal;fo= nt-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times = New Roman"">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Dominique answered while I was writing this email [Rodrigo] Thanks again

3.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= The profiles does specify that the device must wait for an ACK between each= windows.=C2=A0 I think the idea of the author several month ago was to red= uce memory required by the implementation, as the device only need to keep = one window in RAM; but I am also wondering the relevance of it. Any thought= s ? In the mean time I will ask him [Rodrigo]=C2=A0I d= on't understand why the authors call this mode ACK-On-Error if the beha= vior is similar to the ACK-Always mode. In LoRaWAN you always have to wait = for an ACK to finish a window. This breaks the ACK-On-Error mode definition= .


I don't= know all the details of the=C2=A0 LoRa SCHC draft, but in SCHC Ack are not= synchronized with data and can be sent at any time. With LoRa two behavior= s are possible, one is to send all the fragments and wait for ack only afte= r the All-1 has been sent, the other is to wait for Ack after each All-*, i= t does not mean that the sender will send something (ie if the bitmap is fu= ll there is no ack) but it can be viewed as a rendez vous point between the= sender and the receiver.

Laurent

<= div dir=3D"ltr" class=3D"gmail_attr">El mar., 17 dic. 2019 a las 5:49, Oliv= ier Gimenez (<= ogimenez@semtech.com>) escribi=C3=B3:

Hi Rodrigo,

=C2=A0

1.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The schc-over-lorawan-05 document will = introduce =E2=80=9CPenultimate tile must be equal to the regular size.=E2= =80=9D. I hope to publish it this week, until then you can find our working document here

2.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Dominique answered while I was writing = this email

3.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The profiles does specify that the devi= ce must wait for an ACK between each windows.=C2=A0 I think the idea of the= author several month ago was to reduce memory required by the implementation, as the devi= ce only need to keep one window in RAM; but I am also wondering the relevan= ce of it. Any thoughts ? In the mean time I will ask him

=C2=A0

Best regards

Olivier


To view our privacy policy, including the types of personal information we = collect, process and share, and the rights and options you have in this res= pect, see www.se= mtech.com/legal.
_______________________________________________
lp-wan mailing list
lp-wan@ietf.org https://www.ietf.org/mailman/listinfo/lp-wan
--000000000000c887f90599f509f2-- From nobody Tue Dec 17 23:20:29 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9D42C1200C5 for ; Tue, 17 Dec 2019 23:20:28 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.196 X-Spam-Level: X-Spam-Status: No, score=-4.196 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HZd-elnXa8aR for ; Tue, 17 Dec 2019 23:20:26 -0800 (PST) Received: from dash.upc.es (dash.upc.es [147.83.2.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 596A3120059 for ; Tue, 17 Dec 2019 23:20:26 -0800 (PST) Received: from entelserver.upc.edu (entelserver.upc.es [147.83.39.4]) by dash.upc.es (8.14.4/8.14.4/Debian-4.1ubuntu1) with ESMTP id xBI7KOfn031777; Wed, 18 Dec 2019 08:20:24 +0100 Received: from webmail.entel.upc.edu (webmail.entel.upc.edu [147.83.39.6]) by entelserver.upc.edu (Postfix) with ESMTP id 025EF1D53C1; Wed, 18 Dec 2019 08:20:23 +0100 (CET) Received: from 83.37.3.185 by webmail.entel.upc.edu with HTTP; Wed, 18 Dec 2019 08:20:23 +0100 Message-ID: In-Reply-To: References: <324067fd222f4e3f844aa938b43a34fd@semtech.com> Date: Wed, 18 Dec 2019 08:20:23 +0100 From: "Carles Gomez Montenegro" To: "Laurent Toutain" Cc: =?iso-8859-1?Q?=22Rodrigo_Mu=C3=B1oz_Lara=22?= , "Olivier Gimenez" , "lp-wan@ietf.org" , "Sandra Cespedes" User-Agent: SquirrelMail/1.4.21-1.fc14 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal X-Virus-Scanned: clamav-milter 0.100.3 at dash X-Virus-Status: Clean X-Greylist: ACL matched, not delayed by milter-greylist-4.3.9 (dash.upc.es [147.83.2.50]); Wed, 18 Dec 2019 08:20:24 +0100 (CET) Archived-At: Subject: Re: [lp-wan] Implementation of SCHC X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 07:20:28 -0000 Hi, >> 3. The profiles does specify that the device must wait for an ACK >> between each windows. I think the idea of the author several month ago >> was >> to reduce memory required by the implementation, as the device only need >> to >> keep one window in RAM; but I am also wondering the relevance of it. Any >> thoughts ? In the mean time I will ask him [Rodrigo] I don't understand >> why the authors call this mode ACK-On-Error if the behavior is similar >> to >> the ACK-Always mode. In LoRaWAN you always have to wait for an ACK to >> finish a window. This breaks the ACK-On-Error mode definition. >> > > I don't know all the details of the LoRa SCHC draft, but in SCHC Ack are > not synchronized with data and can be sent at any time. With LoRa two > behaviors are possible, one is to send all the fragments and wait for ack > only after the All-1 has been sent, the other is to wait for Ack after > each > All-*, it does not mean that the sender will send something (ie if the > bitmap is full there is no ack) but it can be viewed as a rendez vous > point > between the sender and the receiver. I was going to write along similar terms. In LoRaWAN (Class A) a sender device shall always listen after sending an uplink frame anyway. However, the other side (i.e. the radio gateway) also needs to be taken into account. In ACK-on-Error, except for the last window, if a whole window is successfully delivered to the receiver, there is no ACK in response. If ACKs are sent in the downlink, that means alleviating downlink traffic, which might be a bottleneck in some cases. Cheers, Carles > Laurent From nobody Wed Dec 18 00:26:15 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 895F01208DB for ; Wed, 18 Dec 2019 00:26:13 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=ackl-io.20150623.gappssmtp.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id S04ezp_nfz_p for ; Wed, 18 Dec 2019 00:26:11 -0800 (PST) Received: from mail-lf1-x136.google.com (mail-lf1-x136.google.com [IPv6:2a00:1450:4864:20::136]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 83F6F1200DF for ; Wed, 18 Dec 2019 00:26:10 -0800 (PST) Received: by mail-lf1-x136.google.com with SMTP id n25so1053165lfl.0 for ; Wed, 18 Dec 2019 00:26:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ackl-io.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Qbnt3UAYFBNcgLOZ5YcsCLNK5TRF1EZPRgp5xYTwEcE=; b=FTWMT2hbqa71Z7MxW7vT4DdMsalLkCulh0f8zC+wIWJS+LpwuTo6yahadL1JqvLV/M 0UnQrCp+e7AaH06UOerfpP8aNzfRYweLi1VjwPE3zyKD0IjQosOtnk6BmfixVsS5MlF1 hjUWsGprW+I6h8GsLJp2LIuvb593owz38su5Ts1OSIN81nGViUntm3mPSeOf4kX6P7iX nUJYW31xUI1upXN9rudlr6GsZlvkquV/Pf+3xs6uFVpatmiN8bgoTtAIz0tuST73OX0Y CvRLkOjuT2Pd/3e44HgUaSC88ZwlXDd7V05oXZkAzzHZZF+CUxQcdVWRw6Z08lNAEIbf T1lw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Qbnt3UAYFBNcgLOZ5YcsCLNK5TRF1EZPRgp5xYTwEcE=; b=BnuEqY5/aooh2nTd5orJBi63IEwDL8n5NwahDjOAfatUjtgadhw9r4wvRDHgLE1QrH VGeCou7zGeKLUe0j9+gI7cwJsAS7dLJ29PIToGCHybtj0lct1lqAjMxDjQGXbhvsHJO1 v+OZkGpp9ccdzES59WlS6UEz5jRE0t91brxMwlw+jzfc24oysj6u1bT7+clGAjuF91Yr woF01cbwPEZxVTo08ML4JucaW7a8JmhFT1TR5EHLscTpQJWSXEihuPai5Jwlbewor22C uInoAzr7NCdjm/t+uJpA8UJTAgSN6wp/jqjZQXiYk551Xepat1h+NlW5BcBQkM1GKLGR w7eg== X-Gm-Message-State: APjAAAUhEPFBCBI3sEAoKkc2E6mOk/n4gGkuZUyyB4QNVaLHqVPj/bqJ SK0Z+lpSlab+ffV5HLYX0wws1B1bo+iR8N/DE70mZA== X-Google-Smtp-Source: APXvYqyl+afOjNCtK+VtoFHekYd0S/0OSpL7AEZM+XcNYi9D+SUqaxqy6/Oq2RLGmShl3JhVz9u+bAPTQ6Zk1qH+qyQ= X-Received: by 2002:a19:f10e:: with SMTP id p14mr946072lfh.3.1576657568755; Wed, 18 Dec 2019 00:26:08 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Arunprabhu Kandasamy Date: Wed, 18 Dec 2019 09:25:57 +0100 Message-ID: To: Ivaylo Petrov Cc: lp-wan , "BARTHEL Dominique IMT/OLPS" , Olivier Gimenez Content-Type: multipart/alternative; boundary="000000000000518b8b0599f632cf" Archived-At: Subject: Re: [lp-wan] some topics to discuss related to schc-lorawan draft X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 08:26:13 -0000 --000000000000518b8b0599f632cf Content-Type: text/plain; charset="UTF-8" Hi Ivo, In order to avoid overlapping the state machine of the receiver, the sender could wait some time, if he has knowledge of the inactivity timer configured at receiver, (inactivity timer + delta) before sending the fragments from next session. But I think, this is not the behavior that is specified in the draft. So, it would be good to have some section or sentence that gives the implementors some suggestions on how to interleave fragments when there is no dtag. thanks On Tue, Dec 17, 2019 at 4:44 PM Ivaylo Petrov wrote: > Hello Arun, > > Thank you for your email! Could you elaborate on the sentense "Note that > the sender doesn't have the knowledge of the inactivity timer". > > Thanks, > Ivaylo > > CONFIDENTIALITY NOTICE: This email may contain confidential and > privileged material for the sole use of the intended recipient(s). > > It is strictly forbidden to share any part of this message with any third > party, without the written consent of the sender. > > If you have received this message by mistake, please notify the sender > immediately by email and delete the message and any file attached to it. > Thank you! > > > On Tue, Dec 17, 2019 at 11:45 AM Arunprabhu Kandasamy > wrote: > >> Hi, >> >> I would like to bring a few discussion, that was going around with the >> lorawan authors, to the ML; >> >> Topic 1: >> The current version of the lorawan draft mandates that the last fragment >> i.e. All-1 MUST-NOT carry any tile in it. >> We could, however, have some flexibility here, meaning the last fragment >> "MAY" carry the last tile in it whenever possible. >> The advantage we have here is; >> - we could avoid sending one additional fragment when the last tile is >> smaller than regular tile size. for example 4 bytes. >> >> Since we have configurations in lorawan draft that would result in >> byte-aligned headers that will not induce padding, having >> "penultimate tile MUST be a regular size" wouldn't be a problem as well. >> >> Having configurations that could lead to padding (non-byte-aligned >> headers) would enforce borrowing penultimate tile when the last tile is >> smaller than l2word. But this case is out of the scope for this document. >> >> >> Topic 2(new): >> Since we don't have a dtag in the headers, it might create some >> ambiguity in the receiver to manage statemachines for the devices when it >> receives a new fragmented packet while the inactivity timer is still >> active. Note that the sender doesn't have the knowledge of the inactivity >> timer. >> It would be nice to have a section in the draft to discuss this behavior >> and probably a solution to overcome it. >> >> >> >> what are your thoughts? >> >> >> Thanks, >> Arun >> _______________________________________________ >> lp-wan mailing list >> lp-wan@ietf.org >> https://www.ietf.org/mailman/listinfo/lp-wan >> > -- Arun --000000000000518b8b0599f632cf Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Ivo,
In order to avoid overlapping= the state machine of the receiver, the sender could wait some time, if he = has knowledge of the inactivity timer configured at receiver, (inactivity t= imer=C2=A0+ delta) before sending the fragments from next session. But I th= ink, this is not the behavior that is specified in the draft.
So,= it would be good to have some section or sentence that gives the implement= ors=C2=A0some suggestions=C2=A0on how to interleave fragments when there is= no dtag.

thanks

On Tue, D= ec 17, 2019 at 4:44 PM Ivaylo Petrov <= ivaylo@ackl.io> wrote:
Hello Arun,

Thank you for your email! Could you elabo= rate on the sentense "Note that the sender doesn't have the knowle= dge of the inactivity timer".

Thanks,
Ivaylo

CONFIDENTIALITY NOTICE: <= /span><= span style=3D"white-space:pre-wrap">This email may contain confidential and= privileged material for the sole use of the intended recipient(s).<= /font>

It is strictly forbidden t= o share any part of this message with any third party, without the written = consent of the sender.

If you have = received this message by mistake, please notify the sender immediately by e= mail and delete the message and any file attached to it. Thank you!<= /span>

<= div style=3D"font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font= -size:16px">
=


On Tu= e, Dec 17, 2019 at 11:45 AM Arunprabhu Kandasamy <arun@ackl.io> wrote:
Hi,=C2=A0

I would like to bring a few discussion, that was going a= round with the lorawan authors, to the ML;

Topic 1:
The current v= ersion of the lorawan draft mandates that the last fragment i.e. All-1 MUST= -NOT carry any tile in it.
We could, however, have some flexibility here= , meaning the last fragment "MAY" carry the last tile in it whene= ver possible.
The advantage we have here is; =C2=A0
=C2=A0 - we coul= d avoid sending one additional fragment when the last tile is smaller than = regular tile size. for example 4 bytes.

Since we have configurations= in lorawan draft that would result in byte-aligned headers that will not i= nduce padding, having
"penultimate tile MUST be a regular size&quo= t; wouldn't be a problem as well.

Having configurations that co= uld lead to padding (non-byte-aligned headers) would enforce borrowing penu= ltimate tile when the last tile is smaller than l2word. But this case is ou= t of the scope for this document.


Topic 2(new):
=C2=A0Since = we don't have a dtag in the headers, it might create some ambiguity in = the receiver to manage statemachines for the devices when it receives a new= fragmented packet while the inactivity timer is still active. Note that th= e sender doesn't have the knowledge of the inactivity timer.
It woul= d be nice to have a section in the draft to discuss this behavior and proba= bly a solution to overcome it.
=C2=A0


what are your thoughts= ?=C2=A0


Thanks,
Arun
=
_______________________________________________
lp-wan mailing list
lp-wan@ietf.org https://www.ietf.org/mailman/listinfo/lp-wan


--=C2=A0

Ar= un
--000000000000518b8b0599f632cf-- From nobody Wed Dec 18 01:52:13 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D93851201C6 for ; Wed, 18 Dec 2019 01:52:11 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.598 X-Spam-Level: X-Spam-Status: No, score=-2.598 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6SuAINO8k2c2 for ; Wed, 18 Dec 2019 01:52:09 -0800 (PST) Received: from relais-inet.orange.com (relais-inet.orange.com [80.12.66.39]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) 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Rqo6dUlgD7MzoxBtB3lXYcvhUX1qhRbydkz9zLk= X-Google-Smtp-Source: APXvYqx6uR/YwMr0YiEePaKKMRa8sb7L27LgXqfBoBFZ+WfzyWKfvzwQPtkDfFCDvMUqkpSkXu4pSbm+Yt+zLhXMzQs= X-Received: by 2002:a67:fdda:: with SMTP id l26mr1035264vsq.199.1576670092815; Wed, 18 Dec 2019 03:54:52 -0800 (PST) MIME-Version: 1.0 References: <324067fd222f4e3f844aa938b43a34fd@semtech.com> In-Reply-To: From: =?UTF-8?Q?Rodrigo_Mu=C3=B1oz_Lara?= Date: Wed, 18 Dec 2019 08:54:41 -0300 X-Gmail-Original-Message-ID: Message-ID: To: Carles Gomez Montenegro Cc: Laurent Toutain , Olivier Gimenez , "lp-wan@ietf.org" , Sandra Cespedes Content-Type: multipart/alternative; boundary="000000000000cf72e60599f91cab" X-Virus-Scanned: ClamAV using ClamSMTP Archived-At: Subject: Re: [lp-wan] Implementation of SCHC X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 11:55:02 -0000 --000000000000cf72e60599f91cab Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Carles You say: "...* In ACK-on-Error, except for the last window, if a whole window is successfully delivered to the receiver, there is no ACK in response...*" but in the draft say: "*At the end of a window or a fragmentation session, corresponding ACK(s) is (are) transmitted by the network gateway (LoRaWAN application server) in the RX1 or RX2 receive slot of end-device. If this ACK is not received by the end-device at the end of its RX windows, it sends an all-0 (or an all-1) fragment with no payload to request an SCHC ACK retransmission*." This is where I have my confusion. Should the radio gateway always send an ACK when a window ends? Regards El mi=C3=A9., 18 dic. 2019 a las 4:20, Carles Gomez Montenegro (< carlesgo@entel.upc.edu>) escribi=C3=B3: > Hi, > > >> 3. The profiles does specify that the device must wait for an AC= K > >> between each windows. I think the idea of the author several month ag= o > >> was > >> to reduce memory required by the implementation, as the device only ne= ed > >> to > >> keep one window in RAM; but I am also wondering the relevance of it. A= ny > >> thoughts ? In the mean time I will ask him [Rodrigo] I don't understan= d > >> why the authors call this mode ACK-On-Error if the behavior is similar > >> to > >> the ACK-Always mode. In LoRaWAN you always have to wait for an ACK to > >> finish a window. This breaks the ACK-On-Error mode definition. > >> > > > > I don't know all the details of the LoRa SCHC draft, but in SCHC Ack a= re > > not synchronized with data and can be sent at any time. With LoRa two > > behaviors are possible, one is to send all the fragments and wait for a= ck > > only after the All-1 has been sent, the other is to wait for Ack after > > each > > All-*, it does not mean that the sender will send something (ie if the > > bitmap is full there is no ack) but it can be viewed as a rendez vous > > point > > between the sender and the receiver. > > I was going to write along similar terms. > > In LoRaWAN (Class A) a sender device shall always listen after sending an > uplink frame anyway. However, the other side (i.e. the radio gateway) als= o > needs to be taken into account. In ACK-on-Error, except for the last > window, if a whole window is successfully delivered to the receiver, ther= e > is no ACK in response. If ACKs are sent in the downlink, that means > alleviating downlink traffic, which might be a bottleneck in some cases. > > Cheers, > > Carles > > > Laurent > > > --000000000000cf72e60599f91cab Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Carles

You say:

"...=C2=A0In ACK-on-Error, except for the las= t window, if a whole window is successfully delivered to the receiver, ther= e is no ACK in response..."

but in the dr= aft say:

"At the end of a window or a frag= mentation session, corresponding ACK(s) is (are) transmitted by the network= gateway (LoRaWAN application server) in the RX1 or RX2 receive slot of end= -device.=C2=A0 If this ACK is not received by the end-device at the end of = its RX windows, it sends an all-0 (or an all-1) fragment with no payload to= request an SCHC ACK retransmission."

Thi= s is where I have my confusion. Should the radio gateway always send an ACK= when a window ends?

Regards

El mi=C3=A9.= , 18 dic. 2019 a las 4:20, Carles Gomez Montenegro (<carlesgo@entel.upc.edu>) escribi=C3=B3:
Hi,

>> 3.=C2=A0 =C2=A0 =C2=A0 =C2=A0The profiles does specify that the de= vice must wait for an ACK
>> between each windows.=C2=A0 I think the idea of the author several= month ago
>> was
>> to reduce memory required by the implementation, as the device onl= y need
>> to
>> keep one window in RAM; but I am also wondering the relevance of i= t. Any
>> thoughts ? In the mean time I will ask him [Rodrigo] I don't u= nderstand
>> why the authors call this mode ACK-On-Error if the behavior is sim= ilar
>> to
>> the ACK-Always mode. In LoRaWAN you always have to wait for an ACK= to
>> finish a window. This breaks the ACK-On-Error mode definition.
>>
>
> I don't know all the details of the=C2=A0 LoRa SCHC draft, but in = SCHC Ack are
> not synchronized with data and can be sent at any time. With LoRa two<= br> > behaviors are possible, one is to send all the fragments and wait for = ack
> only after the All-1 has been sent, the other is to wait for Ack after=
> each
> All-*, it does not mean that the sender will send something (ie if the=
> bitmap is full there is no ack) but it can be viewed as a rendez vous<= br> > point
> between the sender and the receiver.

I was going to write along similar terms.

In LoRaWAN (Class A) a sender device shall always listen after sending an uplink frame anyway. However, the other side (i.e. the radio gateway) also<= br> needs to be taken into account. In ACK-on-Error, except for the last
window, if a whole window is successfully delivered to the receiver, there<= br> is no ACK in response. If ACKs are sent in the downlink, that means
alleviating downlink traffic, which might be a bottleneck in some cases.
Cheers,

Carles

> Laurent


--000000000000cf72e60599f91cab-- From nobody Wed Dec 18 03:58:11 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 593D7120915 for ; Wed, 18 Dec 2019 03:58:10 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.299 X-Spam-Level: X-Spam-Status: No, score=-4.299 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=ing.uchile.cl header.b=DLnJvX4M; dkim=pass (1024-bit key) header.d=ing.uchile.cl header.b=DLnJvX4M Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sKuFFFVkzj6S for ; Wed, 18 Dec 2019 03:58:07 -0800 (PST) Received: from mail.cec.uchile.cl (mail2.cec.uchile.cl [200.9.100.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 240B8120168 for ; Wed, 18 Dec 2019 03:58:06 -0800 (PST) Received: from mail.cec.uchile.cl (localhost [127.0.0.1]) by mail.cec.uchile.cl (Postfix) with ESMTP id D57D1A057A for ; Wed, 18 Dec 2019 08:58:04 -0300 (-03) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.cec.uchile.cl D57D1A057A Authentication-Results: mail2.cec.uchile.cl; dmarc=pass (p=none dis=none) header.from=ing.uchile.cl Authentication-Results: mail2.cec.uchile.cl; spf=pass smtp.mailfrom=rmunozlara@ing.uchile.cl DKIM-Filter: OpenDKIM Filter v2.11.0 mail.cec.uchile.cl D57D1A057A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ing.uchile.cl; s=default; t=1576670284; bh=OS+SYB1OCPtk0ZIMbTKf0wF2dxj+iWbcbGVPCdmOUIw=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=DLnJvX4MMyYJ5WUrmq4FLy4JPuKk/ihe7sEiFiBxxY9jsjJBtNlvAUFmh2QiV2Gjq AQUhkLk4zloffShSBjcPEpAmZ4JB5tkKVhPW0OaaZ7N5sudvhyNTFBIunyiBoaOgT8 Cl4p6eoH3PhuG8Din5aC6ie2yMIExd2H+6ydpnLM= Received: from mail-vs1-f43.google.com (mail-vs1-f43.google.com [209.85.217.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (not verified)) by mail.cec.uchile.cl (Postfix) with ESMTPSA id 4667BA0552 for ; Wed, 18 Dec 2019 08:58:04 -0300 (-03) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.cec.uchile.cl 4667BA0552 Authentication-Results: mail2.cec.uchile.cl; dmarc=pass (p=none dis=none) header.from=ing.uchile.cl Authentication-Results: mail2.cec.uchile.cl; spf=pass smtp.mailfrom=rmunozlara@ing.uchile.cl DKIM-Filter: OpenDKIM Filter v2.11.0 mail.cec.uchile.cl 4667BA0552 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ing.uchile.cl; s=default; t=1576670284; bh=OS+SYB1OCPtk0ZIMbTKf0wF2dxj+iWbcbGVPCdmOUIw=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=DLnJvX4MMyYJ5WUrmq4FLy4JPuKk/ihe7sEiFiBxxY9jsjJBtNlvAUFmh2QiV2Gjq AQUhkLk4zloffShSBjcPEpAmZ4JB5tkKVhPW0OaaZ7N5sudvhyNTFBIunyiBoaOgT8 Cl4p6eoH3PhuG8Din5aC6ie2yMIExd2H+6ydpnLM= Received: by mail-vs1-f43.google.com with SMTP id x123so1208744vsc.2 for ; Wed, 18 Dec 2019 03:58:04 -0800 (PST) X-Gm-Message-State: APjAAAX94RjGetZB55fRZWsPzc5bYKHcQ4ZZw+3peLA7U7sSkchgLR0r JkVRdI0y1LsC50Jbyo1+qSAF9mfDNfSfNRXXqsQ= X-Google-Smtp-Source: APXvYqxVRA/pBbAUN/RjAqyl0H+KO0rAubtfZH3YAk8E1RWy/nauQ4e1K4d9suceNo/JrUYgo5eL9Abdk3Eky60AJoc= X-Received: by 2002:a05:6102:2419:: with SMTP id j25mr1023144vsi.172.1576670282686; Wed, 18 Dec 2019 03:58:02 -0800 (PST) MIME-Version: 1.0 References: <324067fd222f4e3f844aa938b43a34fd@semtech.com> In-Reply-To: From: =?UTF-8?Q?Rodrigo_Mu=C3=B1oz_Lara?= Date: Wed, 18 Dec 2019 08:57:51 -0300 X-Gmail-Original-Message-ID: Message-ID: To: Laurent Toutain Cc: Olivier Gimenez , "lp-wan@ietf.org" , Sandra Cespedes Content-Type: multipart/alternative; boundary="00000000000020a4b50599f928d9" X-Virus-Scanned: ClamAV using ClamSMTP Archived-At: Subject: Re: [lp-wan] Implementation of SCHC X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 11:58:10 -0000 --00000000000020a4b50599f928d9 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Laurent You say: "With LoRa two behaviors are possible, one is to send all the fragments and wait for ack only after the All-1 has been sent, the other is to wait for Ack after each All-*" but the draft say: "*At the end of a window or a fragmentation session, corresponding ACK(s) is (are) transmitted by the network gateway (LoRaWAN application server) in the RX1 or RX2 receive slot of end-device. If this ACK is not received by the end-device at the end of its RX windows, it sends an all-0 (or an all-1) fragment with no payload to request an SCHC ACK retransmission*." This is where I have my confusion. Should the radio gateway always send an ACK when a window ends? Regards El mi=C3=A9., 18 dic. 2019 a las 4:02, Laurent Toutain (< laurent.toutain@imt-atlantique.fr>) escribi=C3=B3: > Hi Rodrigo, > > On Tue, Dec 17, 2019 at 9:43 PM Rodrigo Mu=C3=B1oz Lara < > rmunozlara@ing.uchile.cl> wrote: > >> Thanks Olivier >> >> My comments below >> >> 1. The schc-over-lorawan-05 document will introduce =E2=80=9CPenul= timate >> tile must be equal to the regular size.=E2=80=9D. I hope to publish it t= his week, >> until then you can find our working document here >> >> [Rodrigo] Thanks, I have considered it in my development >> >> >> 2. Dominique answered while I was writing this email [Rodrigo] >> Thanks again >> >> 3. The profiles does specify that the device must wait for an ACK >> between each windows. I think the idea of the author several month ago = was >> to reduce memory required by the implementation, as the device only need= to >> keep one window in RAM; but I am also wondering the relevance of it. Any >> thoughts ? In the mean time I will ask him [Rodrigo] I don't understand >> why the authors call this mode ACK-On-Error if the behavior is similar t= o >> the ACK-Always mode. In LoRaWAN you always have to wait for an ACK to >> finish a window. This breaks the ACK-On-Error mode definition. >> > > I don't know all the details of the LoRa SCHC draft, but in SCHC Ack are > not synchronized with data and can be sent at any time. With LoRa two > behaviors are possible, one is to send all the fragments and wait for ack > only after the All-1 has been sent, the other is to wait for Ack after ea= ch > All-*, it does not mean that the sender will send something (ie if the > bitmap is full there is no ack) but it can be viewed as a rendez vous poi= nt > between the sender and the receiver. > > Laurent > >> >> El mar., 17 dic. 2019 a las 5:49, Olivier Gimenez () >> escribi=C3=B3: >> >>> Hi Rodrigo, >>> >>> >>> >>> 1. The schc-over-lorawan-05 document will introduce =E2=80=9CPenu= ltimate >>> tile must be equal to the regular size.=E2=80=9D. I hope to publish it = this week, >>> until then you can find our working document here >>> >>> >>> 2. Dominique answered while I was writing this email >>> >>> 3. The profiles does specify that the device must wait for an ACK >>> between each windows. I think the idea of the author several month ago= was >>> to reduce memory required by the implementation, as the device only nee= d to >>> keep one window in RAM; but I am also wondering the relevance of it. An= y >>> thoughts ? In the mean time I will ask him >>> >>> >>> >>> Best regards >>> >>> Olivier >>> >>> To view our privacy policy, including the types of personal information >>> we collect, process and share, and the rights and options you have in t= his >>> respect, see www.semtech.com/legal. >>> >> _______________________________________________ >> lp-wan mailing list >> lp-wan@ietf.org >> https://www.ietf.org/mailman/listinfo/lp-wan >> > --00000000000020a4b50599f928d9 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi=C2=A0Laurent

You say:

=
"With LoRa two behaviors are possible, one is to send all t= he fragments and wait for ack only after the All-1 has been sent, the other= is to wait for Ack after each All-*"

but the= draft say:

"At the end of a window o= r a fragmentation session, corresponding ACK(s) is (are) transmitted by the= network gateway (LoRaWAN application server) in the RX1 or RX2 receive slo= t of end-device.=C2=A0 If this ACK is not received by the end-device at the= end of its RX windows, it sends an all-0 (or an all-1) fragment with no pa= yload to request an SCHC ACK retransmission."

=
This is where I have my confusion. Should the radio gateway always sen= d an ACK when a window ends?

Regards


El mi=C3=A9., 18 dic. 2019 a las 4:02, Laurent Toutain (<laurent.toutain@imt-atla= ntique.fr>) escribi=C3=B3:
Hi Rodrigo,
<= br>
On Tue,= Dec 17, 2019 at 9:43 PM Rodrigo Mu=C3=B1oz Lara <rmunozlara@ing.uchile.cl> wr= ote:
Thanks=C2=A0Olivier

My comments below

1.=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0The schc-o= ver-lorawan-05 document will introduce =E2=80=9CPenultimate tile must be eq= ual to the regular size.=E2=80=9D. I hope to publish it this week, until th= en you can find our working document=C2=A0here=C2=A0[Rodrigo] Thanks,=C2=A0I have considered it in my deve= lopment


2.=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0Dominique answered while I w= as writing this email [Rodrigo] Thanks again

3.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0The profiles does specify that the devic= e must wait for an ACK between each windows.=C2=A0 I think the idea of the = author several month ago was to reduce memory required by the implementatio= n, as the device only need to keep one window in RAM; but I am also wonderi= ng the relevance of it. Any thoughts ? In the mean time I will ask him [Rodrigo]=C2=A0I don't understand why the authors call= this mode ACK-On-Error if the behavior is similar to the ACK-Always mode. = In LoRaWAN you always have to wait for an ACK to finish a window. This brea= ks the ACK-On-Error mode definition.


I don't know all the details of the=C2=A0 LoRa = SCHC draft, but in SCHC Ack are not synchronized with data and can be sent = at any time. With LoRa two behaviors are possible, one is to send all the f= ragments and wait for ack only after the All-1 has been sent, the other is = to wait for Ack after each All-*, it does not mean that the sender will sen= d something (ie if the bitmap is full there is no ack) but it can be viewed= as a rendez vous point between the sender and the receiver.

=
Laurent

El = mar., 17 dic. 2019 a las 5:49, Olivier Gimenez (<ogimenez@semtech.com>) escribi=C3= =B3:

Hi Rodrigo,

=C2=A0

1.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The schc-over-lorawan-05 document will = introduce =E2=80=9CPenultimate tile must be equal to the regular size.=E2= =80=9D. I hope to publish it this week, until then you can find our working document here

2.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Dominique answered while I was writing = this email

3.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The profiles does specify that the devi= ce must wait for an ACK between each windows.=C2=A0 I think the idea of the= author several month ago was to reduce memory required by the implementation, as the devi= ce only need to keep one window in RAM; but I am also wondering the relevan= ce of it. Any thoughts ? In the mean time I will ask him

=C2=A0

Best regards

Olivier


To view our privacy policy, including the types of personal information we = collect, process and share, and the rights and options you have in this res= pect, see www.se= mtech.com/legal.
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--00000000000020a4b50599f928d9-- From nobody Wed Dec 18 04:33:54 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id AA3051200CC for ; Wed, 18 Dec 2019 04:33:53 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.442 X-Spam-Level: X-Spam-Status: No, score=-2.442 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_IMAGE_ONLY_20=1.546, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, T_REMOTE_IMAGE=0.01, URIBL_CSS=0.1, URIBL_CSS_A=0.1] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vzt6SaeHa6tD for ; Wed, 18 Dec 2019 04:33:50 -0800 (PST) Received: from smtp1.ugent.be (smtp1.ugent.be [157.193.71.182]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A74CF12004C for ; Wed, 18 Dec 2019 04:33:50 -0800 (PST) Received: from localhost (mcheck3.ugent.be [157.193.71.89]) by smtp1.ugent.be (Postfix) with ESMTP id B48EBA0638 for ; Wed, 18 Dec 2019 13:33:46 +0100 (CET) X-Virus-Scanned: by UGent DICT Received: from smtp1.ugent.be ([157.193.71.182]) by localhost (mcheck3.ugent.be [157.193.43.11]) (amavisd-new, port 10024) with ESMTP id jPXGC8_B122T for ; Wed, 18 Dec 2019 13:33:46 +0100 (CET) Received: from moussorgsky (unknown [185.194.187.1]) (Authenticated sender: bamoons) by smtp1.ugent.be (Postfix) with ESMTPSA id B3BEBA0641 for ; Wed, 18 Dec 2019 13:33:45 +0100 (CET) Date: Wed, 18 Dec 2019 13:33:43 +0100 From: Bart Moons To: "=?utf-8?Q?lp-wan=40ietf.org?=" Message-ID: X-Mailer: Mailspring MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="5dfa1ca7_3c19d56_4334" X-Miltered: at jchkm3 with ID 5DFA1CA8.002 by Joe's j-chkmail (http://helpdesk.ugent.be/email/)! X-j-chkmail-Auth: USER-ID bamoons X-j-chkmail-Enveloppe: 5DFA1CA8.002 from unknown/unknown/185.194.187.1/moussorgsky/ X-j-chkmail-Score: MSGID : 5DFA1CA8.002 on smtp1.ugent.be : j-chkmail score : X : R=. U=. O=## B=0.000 -> S=0.166 X-j-chkmail-Status: Ham Archived-At: Subject: [lp-wan] SCHC C library X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 12:33:54 -0000 --5dfa1ca7_3c19d56_4334 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Dear all, Last few months we worked hard on the implementation of the SCHC standard and now I'm pleased to share the library with you, available here: https://github.com/imec-idlab/libschc . The implementation is based on draft-18, but provides a good starting point for experimenting and future implementations. Feel free to comment and contribute! Best regards, Bart Bart Moons Ghent University - imec IDLab iGent Tower - Department of Information Technology Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium (https://maps.google.com/?q=Technologiepark-Zwijnaarde%2015%2C%20B-9052%20Ghent%2C%20Belgium) bamoons.moons@ugent.be (mailto:bamoons.moons@ugent.be) +32 472 42 23 91 (tel:%20+32%20472%2042%2023%2091) http://IDLab.UGent.be http://idlab.technology --5dfa1ca7_3c19d56_4334 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
Dear all,

Last few months we worked hard on the implem= entation of the SCHC standard and now I'm pleased to share the library wi= th you, available here: https://github.c= om/imec-idlab/libschc .
The implementation is based on draf= t-18, but provides a good starting point for experimenting and future imp= lementations.
=46eel free to comment and contribute=21
Best regards,
Bart

Bart Moons
Ghent University - imec
IDLab<= /div>
iGent Tower - Department of Information Technol= ogy
<= a style=3D=22margin-right:8px=22 href=3D=22http://idlab.technology=22>htt= p://idlab.technology
3D=22Sent --5dfa1ca7_3c19d56_4334-- From nobody Wed Dec 18 05:03:11 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D6854120099 for ; Wed, 18 Dec 2019 05:03:09 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.398 X-Spam-Level: X-Spam-Status: No, score=-2.398 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, URIBL_CSS=0.1, URIBL_CSS_A=0.1] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4xJ7q0GCSpZu for ; Wed, 18 Dec 2019 05:03:07 -0800 (PST) Received: from relais-inet.orange.com (relais-inet.orange.com [80.12.70.36]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 644B012004C for ; Wed, 18 Dec 2019 05:03:07 -0800 (PST) Received: from opfednr04.francetelecom.fr (unknown [xx.xx.xx.68]) by opfednr22.francetelecom.fr (ESMTP service) with ESMTP id 47dFYP3L1Kz10Gn; Wed, 18 Dec 2019 14:03:05 +0100 (CET) Received: from Exchangemail-eme6.itn.ftgroup (unknown [xx.xx.13.26]) by opfednr04.francetelecom.fr (ESMTP service) with ESMTP id 47dFYP30Nsz1xpQ; Wed, 18 Dec 2019 14:03:05 +0100 (CET) Received: from OPEXCAUBM21.corporate.adroot.infra.ftgroup ([fe80::d42b:2e80:86c2:5905]) by OPEXCAUBM31.corporate.adroot.infra.ftgroup ([::1]) with mapi id 14.03.0468.000; Wed, 18 Dec 2019 14:03:05 +0100 From: To: Bart Moons CC: "lp-wan@ietf.org" Thread-Topic: [lp-wan] SCHC C library Thread-Index: AQHVtZ9tmOD21Q2S2EurvDOkpBT+Fqe/27qA Date: Wed, 18 Dec 2019 13:03:04 +0000 Message-ID: <21414_1576674185_5DFA2389_21414_255_1_DA1FE1A9.6DCA4%dominique.barthel@orange.com> References: In-Reply-To: Accept-Language: fr-FR, en-US 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with SMTP id a1mr2457387ilt.108.1576681705505; Wed, 18 Dec 2019 07:08:25 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Alexander Pelov Date: Wed, 18 Dec 2019 16:08:14 +0100 Message-ID: To: Hannes Tschofenig Cc: Bart Moons , lp-wan Content-Type: multipart/alternative; boundary="000000000000fb1e0d0599fbd01b" Archived-At: Subject: Re: [lp-wan] SCHC C library X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 15:08:28 -0000 --000000000000fb1e0d0599fbd01b Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Yes, excellent news ! Hope to see you in Vancouver (or remotely) and during the interim meetings! Cheers, Alexander On Wed, Dec 18, 2019, 14:03 Hannes Tschofenig wrote: > Thanks, Bart. That=E2=80=99s quite timely. > > > > *From:* lp-wan *On Behalf Of *Bart Moons > *Sent:* Wednesday, December 18, 2019 1:34 PM > *To:* lp-wan@ietf.org > *Subject:* [lp-wan] SCHC C library > > > > Dear all, > > > > Last few months we worked hard on the implementation of the SCHC standard > and now I'm pleased to share the library with you, available here: > https://github.com/imec-idlab/libschc . > > The implementation is based on draft-18, but provides a good starting > point for experimenting and future implementations. > > Feel free to comment and contribute! > > > > Best regards, > > Bart > > > > *Bart Moons* > > Ghent University - imec > > IDLab > > iGent Tower - Department of Information Technology > > Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium > > > bamoons.moons@ugent.be +32 472 42 23 91 <%20+32%20472%2042%2023%2091> > > http://IDLab.UGent.be > > http://idlab.technology > > [image: Sent from Mailspring] > IMPORTANT NOTICE: The contents of this email and any attachments are > confidential and may also be privileged. If you are not the intended > recipient, please notify the sender immediately and do not disclose the > contents to any other person, use it for any purpose, or store or copy th= e > information in any medium. Thank you. > _______________________________________________ > lp-wan mailing list > lp-wan@ietf.org > https://www.ietf.org/mailman/listinfo/lp-wan > --000000000000fb1e0d0599fbd01b Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Yes, excellent news !

Hope to see you in Vancouver (or remotely) and during the interim= meetings!

Cheers,
=
Alexander

On Wed, Dec 18, 2019, 14:03 Hannes Tschofe= nig <Hannes.Tschofenig@arm.= com> wrote:

Thanks, Bart. That=E2=80=99s quite timely.

=C2=A0

From: lp-wan <lp-wan-bounces@ietf.org= > On Behalf Of Bart Moons
Sent: Wednesday, December 18, 2019 1:34 PM
To: lp-wan@ietf.org
Subject: [lp-wan] SCHC C library

=C2=A0

Dear all,

=C2=A0

Last few months we worked hard on the implementation= of the SCHC standard and now I'm pleased to share the library with you= , available here: https://github.com/imec-idlab/libschc .

The implementation is based on draft-18, but provide= s a good starting point for experimenting and future implementations.

Feel free to comment and contribute!

=C2=A0

Best regards,

Bart

=C2=A0

Bart Moons

Ghent University - imec

IDLab

iGent Tower - Depar= tment of Information Technology

3D"Sent

IMPORTANT NOTICE: The contents of this email and any attachments are confid= ential and may also be privileged. If you are not the intended recipient, p= lease notify the sender immediately and do not disclose the contents to any= other person, use it for any purpose, or store or copy the information in any medium. Thank you.
_______________________________________________
lp-wan mailing list
lp-= wan@ietf.org
https://www.ietf.org/mailman/listinfo/lp-wan<= /a>
--000000000000fb1e0d0599fbd01b-- From nobody Wed Dec 18 07:11:39 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E9A6712022D for ; Wed, 18 Dec 2019 07:11:38 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4 X-Spam-Level: X-Spam-Status: No, score=-4 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_CSS=0.1, URIBL_CSS_A=0.1] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UNDp7vxt_LGN for ; Wed, 18 Dec 2019 07:11:36 -0800 (PST) Received: from smtp3.ugent.be (smtp3.ugent.be [157.193.49.127]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1D35212004E for ; Wed, 18 Dec 2019 07:11:36 -0800 (PST) Received: from localhost (mcheck2.ugent.be [157.193.49.249]) by smtp3.ugent.be (Postfix) with ESMTP id D97C5EE15F for ; Wed, 18 Dec 2019 16:11:32 +0100 (CET) X-Virus-Scanned: by UGent DICT Received: from smtp3.ugent.be ([157.193.49.127]) by localhost (mcheck2.ugent.be [157.193.43.11]) (amavisd-new, port 10024) with ESMTP id dS_sneTxYmft for ; Wed, 18 Dec 2019 16:11:31 +0100 (CET) Received: from moussorgsky (d54C5929D.access.telenet.be [84.197.146.157]) (Authenticated sender: bamoons) by smtp3.ugent.be (Postfix) with ESMTPSA id 3F868EE1D9 for ; Wed, 18 Dec 2019 16:11:32 +0100 (CET) Date: Wed, 18 Dec 2019 16:11:30 +0100 From: Bart Moons To: "=?utf-8?Q?dominique.barthel=40orange.com?=" Cc: "=?utf-8?Q?lp-wan=40ietf.org?=" Message-ID: <2FD0B2AC-075C-4406-88E5-F4EE5FEA50CA@getmailspring.com> In-Reply-To: <21414_1576674185_5DFA2389_21414_255_1_DA1FE1A9.6DCA4%dominique.barthel@orange.com> References: <21414_1576674185_5DFA2389_21414_255_1_DA1FE1A9.6DCA4%dominique.barthel@orange.com> X-Mailer: Mailspring MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="5dfa41a2_4fdcfb9a_4334" X-Miltered: at jchkm1 with ID 5DFA41A3.002 by Joe's j-chkmail (http://helpdesk.ugent.be/email/)! X-j-chkmail-Auth: USER-ID bamoons X-j-chkmail-Enveloppe: 5DFA41A3.002 from d54C5929D.access.telenet.be/d54C5929D.access.telenet.be/84.197.146.157/moussorgsky/ X-j-chkmail-Score: MSGID : 5DFA41A3.002 on smtp3.ugent.be : j-chkmail score : X : R=. U=. O=## B=0.000 -> S=0.166 X-j-chkmail-Status: Ham Archived-At: Subject: Re: [lp-wan] SCHC C library X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 15:11:39 -0000 --5dfa41a2_4fdcfb9a_4334 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hi Dominique, I might travel to Vancouver, but Madrid (108) seems more feasible. I will= for sure try to participate remotely=21 Regards, Bart Bart Moons Ghent University - imec IDLab iGent Tower - Department of Information Technology Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium (https://maps.google= .com/=3Fq=3DTechnologiepark-Zwijnaarde%2015%2C%20B-9052%20Ghent%2C%20Belg= ium) bamoons.moons=40ugent.be (mailto:bamoons.moons=40ugent.be) +32 472 42 23 = 91 (tel:%20+32%20472%2042%2023%2091) http://IDLab.UGent.be http://idlab.technology On Dec 18 2019, at 2:03 pm, dominique.barthel=40orange.com wrote: > > Hello Bart, > > This is great news, thanks a lot for your work and for letting us know=21= > We are currently discussing an interop at Hackathon107 (Vancouver). > Do you plan on attending physically=3F Otherwise, would you be willing = to participate remotely=3F > Best regards > > Dominique > > De : lp-wan on behalf of Bart Moons > Date : Wednesday 18 December 2019 13:33 > =C3=80 : =22lp-wan=40ietf.org (mailto:lp-wan=40ietf.org)=22 > Objet : =5Blp-wan=5D SCHC C library > > > Dear all, > Last few months we worked hard on the implementation of the SCHC standa= rd and now I'm pleased to share the library with you, available here: htt= ps://github.com/imec-idlab/libschc . > The implementation is based on draft-18, but provides a good starting p= oint for experimenting and future implementations. > =46eel free to comment and contribute=21 > > Best regards, > Bart > > Bart Moons > Ghent University - imec > IDLab > > > iGent Tower - Department of Information Technology > Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium (https://maps.goog= le.com/=3Fq=3DTechnologiepark-Zwijnaarde%2015%2C%20B-9052%20Ghent%2C%20Be= lgium) > > bamoons.moons=40ugent.be (mailto:bamoons.moons=40ugent.be) +32 472 42 2= 3 91 (tel:%20+32%20472%2042%2023%2091) > http://IDLab.UGent.be > http://idlab.technology > > > > > > > > > =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F > > Ce message et ses pieces jointes peuvent contenir des informations conf= identielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez = recu ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les message= s electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme= ou falsifie. Merci. > > This message and its attachments may contain confidential or privileged= information that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and = delete this message and its attachments. > As emails may be altered, Orange is not liable for messages that have b= een modified, changed or falsified. > Thank you. --5dfa41a2_4fdcfb9a_4334 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
Hi Dominique,

I might travel to Vancouver, but Madrid = (108) seems more feasible. I will for sure try to participate remotely=21=

Regards,
Bart

=
<= strong>Bart Moons
Ghent University - imec
ID= Lab
iGent Tower - Department of Information Tec= hnology
=
<= /div>
On Dec 18 2019, at 2:= 03 pm, dominique.barthel=40orange.com wrote:

Hello Bart,

This is great news, thanks a lot = for your work and for letting us know=21
We are currently discu= ssing an interop at Hackathon107 (Vancouver).
Do you plan on at= tending physically=3F Otherwise, would you be willing to participate remo= tely=3F
Best regards

Dominique

Date : Wednesday= 18 December 2019 13:33
=
Objet : =5Blp-wan=5D SCHC C library
=

Dear all,

Last few months we = worked hard on the implementation of the SCHC standard and now I'm please= d to share the library with you, available here: https://github.com/imec-idlab/libschc .
The implem= entation is based on draft-18, but provides a good starting point for exp= erimenting and future implementations.
=46eel free to comment a= nd contribute=21

Best regards,
Bart

= 
=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
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3D=22Sent --5dfa41a2_4fdcfb9a_4334-- From nobody Wed Dec 18 07:19:16 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 50A14120236 for ; Wed, 18 Dec 2019 07:19:15 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.697 X-Spam-Level: X-Spam-Status: No, score=-1.697 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, URIBL_CSS=0.1, URIBL_CSS_A=0.1] autolearn=no autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=mail-udp-cl.20150623.gappssmtp.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id pZUQxBGr3XXC for ; Wed, 18 Dec 2019 07:19:13 -0800 (PST) Received: from mail-oi1-x230.google.com (mail-oi1-x230.google.com [IPv6:2607:f8b0:4864:20::230]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D6C551200C3 for ; Wed, 18 Dec 2019 07:19:12 -0800 (PST) Received: by mail-oi1-x230.google.com with SMTP id l136so1126109oig.1 for ; Wed, 18 Dec 2019 07:19:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mail-udp-cl.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=tyhccMlVX6l+B3WUmnDIXGfFiP0xJcXCd5jmf5yPDiA=; b=VNk+/Z6DhC+wStf56m0gVDxZP+XWwCSosItu9LANpHU364lrP0QewZXCRtVvLexDXC E4ico228dGTzXDMlAzVdyqSKO86kbi1AKhqAnRAShaadKBO8EuPujqdbyHLtS29zL7xe YQuHNOMA4/Tf+QbJ5QiuywaUPvzXl4JkzffJZPxx1CCkv+CqAEPw0Cxt/JOhkFYOo2lH m9BMgT2plmpg3H/HIVTDkczuDaLYKDyOV3xS7i95gM6YD4F4k44ps5HluowfvltWNUb/ W1IToUl+lZEtI1aQhoQ6UysNcr/8ZdHAKv5jNv3nQU/Cscgcep7Ba9zmXG2Sn8HAac8T VwSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=tyhccMlVX6l+B3WUmnDIXGfFiP0xJcXCd5jmf5yPDiA=; b=iOweBNz/BhSKJJc5TqptBCd2pdyipxgU8Cs7SKeWdszLHhoVudaK2watTC1LiMR459 F4LOHU09yg4aktxDY/qoi+qnXewXO6QJFTCayjedx07PF12vShDDE4VkwQ9G3olL8yNM PdraohDthxGHAdFkmjrq60VewCHbTzro6w4WWIIOPlv50WsnOCl5r1Tt7myNbn2xTDqn avUyCzIWXb6/K7en/dIypZiZOyYEuttrciTiOj6yPTZ/oDoX2o/1t71PXUZ+O8Vv/B/r /mVVOz458PgdYBfcK1nFi75bY+yd65kl3INSiG9P2qAtSBWJ0sAf/XVEFFd7wPtkq7vE TCdA== X-Gm-Message-State: APjAAAXxOKSaUzjGnfeEh25/zPGX6neoJbbv7dpBXmvl+n+CmeHpow/I dUXdsTtas5y+nuHqvUdcS5y8BLJJnD6b2V+EeIflUw== X-Google-Smtp-Source: APXvYqypgWZ0e2asLzBCY/Lk3sK9rJ2QoGBv8S+QOT5SuO4KZJQz+OHuFNERRc0d4LRs4G1Y1dKoibg4GFpmQnYeb98= X-Received: by 2002:aca:b48a:: with SMTP id d132mr649544oif.111.1576682351028; Wed, 18 Dec 2019 07:19:11 -0800 (PST) MIME-Version: 1.0 References: <21414_1576674185_5DFA2389_21414_255_1_DA1FE1A9.6DCA4%dominique.barthel@orange.com> <2FD0B2AC-075C-4406-88E5-F4EE5FEA50CA@getmailspring.com> In-Reply-To: <2FD0B2AC-075C-4406-88E5-F4EE5FEA50CA@getmailspring.com> From: "Prof. Diego Dujovne" Date: Wed, 18 Dec 2019 12:18:59 -0300 Message-ID: To: Bart Moons Cc: "dominique.barthel@orange.com" , "lp-wan@ietf.org" Content-Type: multipart/alternative; boundary="00000000000075184f0599fbf7bd" Archived-At: Subject: Re: [lp-wan] SCHC C library X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 15:19:15 -0000 --00000000000075184f0599fbf7bd Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Great news! I have checked the implementation and it is pretty complete. It is nice to have a C-version for embedded systems. I hope to try it next month. Regards, Diego Dujovne Le mer. 18 d=C3=A9c. 2019 =C3=A0 12:11, Bart Moons = a =C3=A9crit : > Hi Dominique, > > I might travel to Vancouver, but Madrid (108) seems more feasible. I will > for sure try to participate remotely! > > Regards, > Bart > > *Bart Moons* > Ghent University - imec > IDLab > iGent Tower - Department of Information Technology > Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium > > bamoons.moons@ugent.be +32 472 42 23 91 <%20+32%20472%2042%2023%2091> > http://IDLab.UGent.be > http://idlab.technology > On Dec 18 2019, at 2:03 pm, dominique.barthel@orange.com wrote: > > > Hello Bart, > > This is great news, thanks a lot for your work and for letting us know! > We are currently discussing an interop at Hackathon107 (Vancouver). > Do you plan on attending physically? Otherwise, would you be willing to > participate remotely? > Best regards > > Dominique > > De : lp-wan on behalf of Bart Moons < > bamoons.moons@ugent.be> > Date : Wednesday 18 December 2019 13:33 > =C3=80 : "lp-wan@ietf.org" > Objet : [lp-wan] SCHC C library > > Dear all, > > Last few months we worked hard on the implementation of the SCHC standard > and now I'm pleased to share the library with you, available here: > https://github.com/imec-idlab/libschc . > The implementation is based on draft-18, but provides a good starting > point for experimenting and future implementations. > Feel free to comment and contribute! > > Best regards, > Bart > > *Bart Moons* > Ghent University - imec > IDLab > iGent Tower - Department of Information Technology > Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium > > bamoons.moons@ugent.be +32 472 42 23 91 <%20+32%20472%2042%2023%2091> > http://IDLab.UGent.be > http://idlab.technology > > _________________________________________________________________________= ________________________________________________ > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > Thank you. > > [image: Sent from Mailspring] > _______________________________________________ > lp-wan mailing list > lp-wan@ietf.org > https://www.ietf.org/mailman/listinfo/lp-wan > --=20 DIEGO DUJOVNE Profesor Asociado Escuela de Inform=C3=A1tica y Telecomunicaciones Facultad de Ingenier=C3=ADa - Universidad Diego Portales - Chile www.ingenieria.udp.cl (56 2) 676 8125 --00000000000075184f0599fbf7bd Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Great news!=C2=A0
I have checked the implementation an= d it is pretty complete.
It is nice to have a C-version for embed= ded systems. I hope
to try it next month.
Regards,=

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Diego Dujovne

Le=C2=A0mer. 18= d=C3=A9c. 2019 =C3=A0=C2=A012:11, Bart Moons <bamoons.moons@ugent.be> a =C3=A9crit=C2=A0:
Hi Dominique,
I might travel to Vancouver, but Madrid (108) seems more feasible= . I will for sure try to participate remotely!

Regards,
=
Bart

<= tbody>
On Dec 18 2019, at 2:03 pm, dominique.barthel@orange.com= wrote:

Hello Bart,

This is great news, thanks a lot for your work and for letting us know!
We are currently discussing an interop at Hackathon107 (Vancouver).=
Do you plan on attending physically? Otherwise, would you be wil= ling to participate remotely?
Best regards

Dominique

<= font style=3D"font-family:Calibri">De=C2=A0: lp-wan <lp-wan-bounces@ietf.org> on behalf of Bart Moon= s <bamoons.moons@ugent.be>
Date=C2=A0: Wednesday 18 December 2019 13:33
=C3=80=C2=A0: "lp-wan@ietf.org" <<= /font>lp-wan@ietf.org>
Objet=C2=A0: = [lp-wan] SCHC C library

<= div>Dear all,

Last few months we worked hard on the implement= ation of the SCHC standard and now I'm pleased to share the library wit= h you, available here: https://git= hub.com/imec-idlab/libschc .
The implementation is based on d= raft-18, but provides a good starting point for experimenting and future im= plementations.
Feel free to comment and contribute!

Best regards,
Bart

= Bart Moons
Ghent University - imec
IDLab
=
iGent Tower - Department of Information Technology
Bart Moons
Ghent University - imec
IDLab
iGent Tower - Department of Information Technolo= gy
_____________________________=
___________________________________________________________________________=
_________________

Ce message et ses pieces jointes peuvent contenir =
des informations confidentielles ou privilegiees et ne doivent donc
pas =
etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce =
message par erreur, veuillez le signaler
a l'expediteur et le detrui=
re ainsi que les pieces jointes. Les messages electroniques etant susceptib=
les d'alteration,
Orange decline toute responsabilite si ce message =
a ete altere, deforme ou falsifie. Merci.

This message and its attac=
hments may contain confidential or privileged information that may be prote=
cted by law;
they should not be distributed, used or copied without auth=
orisation.
If you have received this email in error, please notify the s=
ender and delete this message and its attachments.
As emails may be alte=
red, Orange is not liable for messages that have been modified, changed or =
falsified.
Thank you.
3D"Sen=_______________________________________________
lp-wan mailing list
lp-wan@ietf.org https://www.ietf.org/mailman/listinfo/lp-wan


--
DIEG= O DUJOVNE
Profesor Asociado
Escuela de Inform=C3=A1tica y Telecomunic= aciones
Facultad de Ingenier=C3=ADa - Universidad Diego Portales - Chile=
www.ingenier= ia.udp.cl
(56 2) 676 8125
--00000000000075184f0599fbf7bd-- From nobody Wed Dec 18 07:39:10 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3DB2B12084A for ; Wed, 18 Dec 2019 07:39:08 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.198 X-Spam-Level: X-Spam-Status: No, score=-4.198 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_NONE=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id C-ZK_aVG0YnM for ; Wed, 18 Dec 2019 07:39:06 -0800 (PST) Received: from violet.upc.es (violet.upc.es [147.83.2.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id EAD24120846 for ; Wed, 18 Dec 2019 07:39:05 -0800 (PST) Received: from entelserver.upc.edu (entelserver.upc.es [147.83.39.4]) by violet.upc.es (8.14.4/8.14.4/Debian-4.1ubuntu1) with ESMTP id xBIFd0Fe050872; Wed, 18 Dec 2019 16:39:01 +0100 Received: from webmail.entel.upc.edu (webmail.entel.upc.edu [147.83.39.6]) by entelserver.upc.edu (Postfix) with ESMTP id 599B61D53C1; Wed, 18 Dec 2019 16:38:59 +0100 (CET) Received: from 83.37.3.185 by webmail.entel.upc.edu with HTTP; Wed, 18 Dec 2019 16:39:00 +0100 Message-ID: <3bd01033255a051f9052b943536f547a.squirrel@webmail.entel.upc.edu> In-Reply-To: References: <324067fd222f4e3f844aa938b43a34fd@semtech.com> Date: Wed, 18 Dec 2019 16:39:00 +0100 From: "Carles Gomez Montenegro" To: =?iso-8859-1?Q?=22Rodrigo_Mu=C3=B1oz_Lara=22?= Cc: "Laurent Toutain" , "Olivier Gimenez" , "lp-wan@ietf.org" , "Sandra Cespedes" User-Agent: SquirrelMail/1.4.21-1.fc14 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal X-Virus-Scanned: clamav-milter 0.100.3 at violet X-Virus-Status: Clean X-Greylist: Delayed for 08:18:38 by milter-greylist-4.3.9 (violet.upc.es [147.83.2.51]); Wed, 18 Dec 2019 16:39:02 +0100 (CET) Archived-At: Subject: Re: [lp-wan] Implementation of SCHC X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 15:39:08 -0000 Hi Rodrigo, Please find below my inline response: > Hi Carles > > You say: > > "...* In ACK-on-Error, except for the last window, if a whole window is > successfully delivered to the receiver, there is no ACK in response...*" > > but in the draft say: > > "*At the end of a window or a fragmentation session, corresponding ACK(s) > is (are) transmitted by the network gateway (LoRaWAN application server) > in > the RX1 or RX2 receive slot of end-device. If this ACK is not received by > the end-device at the end of its RX windows, it sends an all-0 (or an > all-1) fragment with no payload to request an SCHC ACK retransmission*." > > This is where I have my confusion. Should the radio gateway always send an > ACK when a window ends? I see your point. Indeed, the text you highlight above sounds very much like ACK Always... I will defer your question to the authors of the SCHC over LoRaWAN draft, as they will be able to better motivate their text. Cheers, Carles > Regards > > El mié., 18 dic. 2019 a las 4:20, Carles Gomez Montenegro (< > carlesgo@entel.upc.edu>) escribió: > >> Hi, >> >> >> 3. The profiles does specify that the device must wait for an >> ACK >> >> between each windows. I think the idea of the author several month >> ago >> >> was >> >> to reduce memory required by the implementation, as the device only >> need >> >> to >> >> keep one window in RAM; but I am also wondering the relevance of it. >> Any >> >> thoughts ? In the mean time I will ask him [Rodrigo] I don't >> understand >> >> why the authors call this mode ACK-On-Error if the behavior is >> similar >> >> to >> >> the ACK-Always mode. In LoRaWAN you always have to wait for an ACK to >> >> finish a window. This breaks the ACK-On-Error mode definition. >> >> >> > >> > I don't know all the details of the LoRa SCHC draft, but in SCHC Ack >> are >> > not synchronized with data and can be sent at any time. With LoRa two >> > behaviors are possible, one is to send all the fragments and wait for >> ack >> > only after the All-1 has been sent, the other is to wait for Ack after >> > each >> > All-*, it does not mean that the sender will send something (ie if the >> > bitmap is full there is no ack) but it can be viewed as a rendez vous >> > point >> > between the sender and the receiver. >> >> I was going to write along similar terms. >> >> In LoRaWAN (Class A) a sender device shall always listen after sending >> an >> uplink frame anyway. However, the other side (i.e. the radio gateway) >> also >> needs to be taken into account. In ACK-on-Error, except for the last >> window, if a whole window is successfully delivered to the receiver, >> there >> is no ACK in response. If ACKs are sent in the downlink, that means >> alleviating downlink traffic, which might be a bottleneck in some cases. >> >> Cheers, >> >> Carles >> >> > Laurent >> >> >> > From nobody Wed Dec 18 07:43:39 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B09EB120921 for ; Wed, 18 Dec 2019 07:43:38 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.8 X-Spam-Level: X-Spam-Status: No, score=-1.8 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_CSS=0.1, URIBL_CSS_A=0.1] autolearn=no autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=ieee.org Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jtcr7dKFq47d for ; Wed, 18 Dec 2019 07:43:36 -0800 (PST) Received: from mail-il1-x134.google.com (mail-il1-x134.google.com [IPv6:2607:f8b0:4864:20::134]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3CACE120922 for ; Wed, 18 Dec 2019 07:43:36 -0800 (PST) Received: by mail-il1-x134.google.com with SMTP id c4so2068376ilo.7 for ; Wed, 18 Dec 2019 07:43:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ieee.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=qVVEGWbJ/J9tHu+YRhH0a5GISM7WC+7IWqrcYcjSzEo=; b=IFGXPenM2wwjNaGm4LEchaukLOF3AcyI/UFiNY5QyunCu7LX/mzsae5koTELUHJ4Mg 4q4x/gybe5PuLqtOTMTvR+dASXP/j4obi7qFkuVMptSVEL2/PECMRd9FANsP76AK8Xmr HSqx9V9BhypEAztPTN0MqTlD7LmOS3PfaVf1c= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=qVVEGWbJ/J9tHu+YRhH0a5GISM7WC+7IWqrcYcjSzEo=; b=jt/HCDWaMRAw0EJmaUNufPAMAY7Kk1ZLFvjwl/C11oLgPq2CmyN4WgM1wP8m8YMagg iIB5laLJ5cY1VpbmXJ1fDs3eg8v6c+SeRm4u3V19U6lG4fwBnEzVOaLpdYpcrchHscAY ewqbvgwOXGxGhzJypBKYqyYqbQJe7PZ+SbozkCl0iZBodWrqL8kMSXEC09T7bC0SGEGr v9c+xbiOXOjw1f7k84E4+xh257qsu11ofnaEPD0tMEL7nYZuiPO6KsiDREyGVjko0MJY Q//6ofjLwRVRmEZP894FOk+7vWXdPuks+sOYNSPsUYA2WmSwYgdVRrgwU28X5fNggjPd Wm4w== X-Gm-Message-State: APjAAAV63EnRv0Y7CY+hOMS1gMRMRx3Wd0X0jeSOnPZ7AVmEWGokgWsS K8KgUX5Xyln8GHNhxH16ORuc1KzsqFM= X-Google-Smtp-Source: APXvYqxINuHimEupCUOUR4675OB6uG00fWIdbDSG7CaUb1yT+v4N0+kg0EwuYsBd8HdfU9pS9/aVQA== X-Received: by 2002:a92:d80f:: with SMTP id y15mr2513013ilm.225.1576683815184; Wed, 18 Dec 2019 07:43:35 -0800 (PST) Received: from mail-io1-f47.google.com (mail-io1-f47.google.com. [209.85.166.47]) by smtp.gmail.com with ESMTPSA id u29sm771164ill.62.2019.12.18.07.43.34 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 18 Dec 2019 07:43:34 -0800 (PST) Received: by mail-io1-f47.google.com with SMTP id n21so874757ioo.10 for ; Wed, 18 Dec 2019 07:43:34 -0800 (PST) X-Received: by 2002:a5d:884c:: with SMTP id t12mr2136033ios.171.1576683814506; Wed, 18 Dec 2019 07:43:34 -0800 (PST) MIME-Version: 1.0 References: <21414_1576674185_5DFA2389_21414_255_1_DA1FE1A9.6DCA4%dominique.barthel@orange.com> <2FD0B2AC-075C-4406-88E5-F4EE5FEA50CA@getmailspring.com> In-Reply-To: From: "Khaled Q. Abdelfadeel" Date: Wed, 18 Dec 2019 15:43:22 +0000 X-Gmail-Original-Message-ID: Message-ID: To: "Prof. Diego Dujovne" Cc: Bart Moons , "lp-wan@ietf.org" , "dominique.barthel@orange.com" Content-Type: multipart/alternative; boundary="000000000000afdc370599fc4e5f" Archived-At: Subject: Re: [lp-wan] SCHC C library X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 15:43:39 -0000 --000000000000afdc370599fc4e5f Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thanks, Bart for the good work. I was wondering if you have some numbers for the ROM and RAM requirements? Best, Khaled On Wed, Dec 18, 2019 at 3:19 PM Prof. Diego Dujovne < diego.dujovne@mail.udp.cl> wrote: > Great news! > I have checked the implementation and it is pretty complete. > It is nice to have a C-version for embedded systems. I hope > to try it next month. > Regards, > > Diego Dujovne > > Le mer. 18 d=C3=A9c. 2019 =C3=A0 12:11, Bart Moons > a =C3=A9crit : > >> Hi Dominique, >> >> I might travel to Vancouver, but Madrid (108) seems more feasible.. I >> will for sure try to participate remotely! >> >> Regards, >> Bart >> >> *Bart Moons* >> Ghent University - imec >> IDLab >> iGent Tower - Department of Information Technology >> Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium >> >> bamoons.moons@ugent.be +32 472 42 23 91 <%20+32%20472%2042%2023%2091> >> http://IDLab.UGent.be >> http://idlab.technology >> On Dec 18 2019, at 2:03 pm, dominique.barthel@orange.com wrote: >> >> >> Hello Bart, >> >> This is great news, thanks a lot for your work and for letting us know! >> We are currently discussing an interop at Hackathon107 (Vancouver). >> Do you plan on attending physically? Otherwise, would you be willing to >> participate remotely? >> Best regards >> >> Dominique >> >> De : lp-wan on behalf of Bart Moons < >> bamoons.moons@ugent.be> >> Date : Wednesday 18 December 2019 13:33 >> =C3=80 : "lp-wan@ietf.org" >> Objet : [lp-wan] SCHC C library >> >> Dear all, >> >> Last few months we worked hard on the implementation of the SCHC standar= d >> and now I'm pleased to share the library with you, available here: >> https://github.com/imec-idlab/libschc . >> The implementation is based on draft-18, but provides a good starting >> point for experimenting and future implementations. >> Feel free to comment and contribute! >> >> Best regards, >> Bart >> >> *Bart Moons* >> Ghent University - imec >> IDLab >> iGent Tower - Department of Information Technology >> Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium >> >> bamoons.moons@ugent.be +32 472 42 23 91 <%20+32%20472%2042%2023%2091> >> http://IDLab.UGent.be >> http://idlab.technology >> >> ________________________________________________________________________= _________________________________________________ >> >> Ce message et ses pieces jointes peuvent contenir des informations confi= dentielles ou privilegiees et ne doivent donc >> pas etre diffuses, exploites ou copies sans autorisation. Si vous avez r= ecu ce message par erreur, veuillez le signaler >> a l'expediteur et le detruire ainsi que les pieces jointes. Les messages= electroniques etant susceptibles d'alteration, >> Orange decline toute responsabilite si ce message a ete altere, deforme = ou falsifie. Merci. >> >> This message and its attachments may contain confidential or privileged = information that may be protected by law; >> they should not be distributed, used or copied without authorisation. >> If you have received this email in error, please notify the sender and d= elete this message and its attachments. >> As emails may be altered, Orange is not liable for messages that have be= en modified, changed or falsified. >> Thank you. >> >> [image: Sent from Mailspring] >> _______________________________________________ >> lp-wan mailing list >> lp-wan@ietf.org >> https://www.ietf.org/mailman/listinfo/lp-wan >> > > > -- > DIEGO DUJOVNE > Profesor Asociado > Escuela de Inform=C3=A1tica y Telecomunicaciones > Facultad de Ingenier=C3=ADa - Universidad Diego Portales - Chile > www.ingenieria.udp.cl > (56 2) 676 8125 > _______________________________________________ > lp-wan mailing list > lp-wan@ietf.org > https://www.ietf.org/mailman/listinfo/lp-wan > --000000000000afdc370599fc4e5f Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Thanks, Bart for the good work. I was wondering if you have som= e numbers for the ROM and RAM requirements?

Best,
Khaled
On Wed, = Dec 18, 2019 at 3:19 PM Prof. Diego Dujovne <diego.dujovne@mail.udp.cl> wrote:
Great news!=C2= =A0
I have checked the implementation and it is pretty complete.
<= div>It is nice to have a C-version for embedded systems. I hope
t= o try it next month.
Regards,

=C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 Diego Dujovne

Le=C2=A0mer. 18 d=C3=A9c. 2019 =C3=A0=C2=A0= 12:11, Bart Moons <bamoons.moons@ugent.be> a =C3=A9crit=C2=A0:
Hi Dominique,

I might travel to Vancouver, but Madrid (108) seems more feasible.. I will= for sure try to participate remotely!

Regards,
Bar= t

On Dec 18 2019, at 2:03 pm, dominique.barthel@orange.com wrote:=

Hello Bart,

This i= s great news, thanks a lot for your work and for letting us know!
We are currently discussing an interop at Hackathon107 (Vancouver).
<= div>Do you plan on attending physically? Otherwise, would you be willing to= participate remotely?
Best regards

Domi= nique

De=C2=A0: lp-wan <lp-wan-bounces@ietf.org> on behalf of Bart Moons <= bamoons.moons@ugent.be><= /font>
Date=C2=A0: Wednesday 18 December 2019 13:33
=C3= =80=C2=A0: "lp-wan@ietf.org" <lp-wan@ietf.org>
Objet=C2=A0: [l= p-wan] SCHC C library

Dear all,

Last few months we worked hard on the implementat= ion of the SCHC standard and now I'm pleased to share the library with = you, available here: https://githu= b.com/imec-idlab/libschc .
The implementation is based on dra= ft-18, but provides a good starting point for experimenting and future impl= ementations.
Feel free to comment and contribute!

B= est regards,
Bart

<= td>
Bart Moons
Ghent University - imec
=
IDLab
= 
_______________________________________________________________________=
__________________________________________________

Ce message et ses=
 pieces jointes peuvent contenir des informations confidentielles ou privil=
egiees et ne doivent donc
pas etre diffuses, exploites ou copies sans au=
torisation. Si vous avez recu ce message par erreur, veuillez le signalera l'expediteur et le detruire ainsi que les pieces jointes. Les messa=
ges electroniques etant susceptibles d'alteration,
Orange decline to=
ute responsabilite si ce message a ete altere, deforme ou falsifie. Merci.<=
br>
This message and its attachments may contain confidential or privile=
ged information that may be protected by law;
they should not be distrib=
uted, used or copied without authorisation.
If you have received this em=
ail in error, please notify the sender and delete this message and its atta=
chments.
As emails may be altered, Orange is not liable for messages tha=
t have been modified, changed or falsified.
Thank you.
<= /div>
3D"Sent_________________________= ______________________
lp-wan mailing list
lp-wan@ietf.org https://www.ietf.org/mailman/listinfo/lp-wan


--
DIEGO DUJOVNE
Profesor Asoc= iado
Escuela de Inform=C3=A1tica y Telecomunicaciones
Facultad de Ing= enier=C3=ADa - Universidad Diego Portales - Chile
www.ingenieria.udp.cl
(56 2) 67= 6 8125
_______________________________________________
lp-wan mailing list
lp-wan@ietf.org https://www.ietf.org/mailman/listinfo/lp-wan
--000000000000afdc370599fc4e5f-- From nobody Wed Dec 18 07:49:27 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5DD4B12025D for ; Wed, 18 Dec 2019 07:49:26 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -3.998 X-Spam-Level: X-Spam-Status: No, score=-3.998 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, URIBL_CSS=0.1, URIBL_CSS_A=0.1] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 64lDWbUe2ICc for ; Wed, 18 Dec 2019 07:49:23 -0800 (PST) Received: from smtp1.ugent.be (smtp1.ugent.be [157.193.71.182]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6BC23120843 for ; Wed, 18 Dec 2019 07:49:23 -0800 (PST) Received: from localhost (mcheck2.ugent.be [157.193.49.249]) by smtp1.ugent.be (Postfix) with ESMTP id C2B1EA066E for ; Wed, 18 Dec 2019 16:49:21 +0100 (CET) X-Virus-Scanned: by UGent DICT Received: from smtp1.ugent.be ([157.193.71.182]) by localhost (mcheck2.ugent.be [157.193.43.11]) (amavisd-new, port 10024) with ESMTP id puMBy7IYgCsb for ; Wed, 18 Dec 2019 16:49:21 +0100 (CET) Received: from moussorgsky (d54c5929d.access.telenet.be [84.197.146.157]) (Authenticated sender: bamoons) by smtp1.ugent.be (Postfix) with ESMTPSA id EAF4BA0663 for ; Wed, 18 Dec 2019 16:49:20 +0100 (CET) Date: Wed, 18 Dec 2019 16:49:18 +0100 From: Bart Moons To: "Khaled Q. Abdelfadeel" Cc: "Prof. Diego Dujovne" , "=?utf-8?Q?lp-wan=40ietf.org?=" , "=?utf-8?Q?dominique.barthel=40orange.com?=" Message-ID: In-Reply-To: References: X-Mailer: Mailspring MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="5dfa4a7e_161fd265_4334" X-Miltered: at jchkm1 with ID 5DFA4A80.002 by Joe's j-chkmail (http://helpdesk.ugent.be/email/)! X-j-chkmail-Auth: USER-ID bamoons X-j-chkmail-Enveloppe: 5DFA4A80.002 from d54c5929d.access.telenet.be/d54c5929d.access.telenet.be/84.197.146.157/moussorgsky/ X-j-chkmail-Score: MSGID : 5DFA4A80.002 on smtp1.ugent.be : j-chkmail score : X : R=. U=. O=## B=0.000 -> S=0.166 X-j-chkmail-Status: Ham Archived-At: Subject: Re: [lp-wan] SCHC C library X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Dec 2019 15:49:26 -0000 --5dfa4a7e_161fd265_4334 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hi Khaled, You can find ROM and RAM usage in a paper we published ( http://hdl.handl= e.net/1854/LU-8613162 ). These numbers depend on the configuration of the library and also the rul= es have a large impact on the ROM usage. Regards, Bart Bart Moons Ghent University - imec IDLab iGent Tower - Department of Information Technology Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium (https://maps.google= .com/=3Fq=3DTechnologiepark-Zwijnaarde%2015%2C%20B-9052%20Ghent%2C%20Belg= ium) bamoons.moons=40ugent.be (mailto:bamoons.moons=40ugent.be) +32 472 42 23 = 91 (tel:%20+32%20472%2042%2023%2091) http://IDLab.UGent.be http://idlab.technology On Dec 18 2019, at 4:43 pm, Khaled Q. Abdelfadeel wrote: > Thanks, Bart for the good work. I was wondering if you have some number= s for the ROM and RAM requirements=3F > > Best, > Khaled > > > On Wed, Dec 18, 2019 at 3:19 PM Prof. Diego Dujovne wrote: > > Great news=21 > > I have checked the implementation and it is pretty complete. > > It is nice to have a C-version for embedded systems. I hope > > to try it next month. > > Regards, > > > > Diego Dujovne > > Le mer. 18 d=C3=A9c. 2019 =C3=A0 12:11, Bart Moons a =C3=A9crit : > > > Hi Dominique, > > > > > > I might travel to Vancouver, but Madrid (108) seems more feasible..= I will for sure try to participate remotely=21 > > > Regards, > > > Bart > > > > > > Bart Moons > > > Ghent University - imec > > > IDLab > > > > > > > > > iGent Tower - Department of Information Technology > > > Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium (https://maps.= google.com/=3Fq=3DTechnologiepark-Zwijnaarde%2015%2C%20B-9052%20Ghent%2C%= 20Belgium) > > > > > > bamoons.moons=40ugent.be (mailto:bamoons.moons=40ugent.be) +32 472 = 42 23 91 (tel:%20+32%20472%2042%2023%2091) > > > http://IDLab.UGent.be > > > http://idlab.technology > > > > > > > > > > > > > > > > > > > > > On Dec 18 2019, at 2:03 pm, dominique.barthel=40orange.com (mailto:= dominique.barthel=40orange.com) wrote: > > > > > > > > Hello Bart, > > > > > > > > This is great news, thanks a lot for your work and for letting us= know=21 > > > > We are currently discussing an interop at Hackathon107 (Vancouver= ). > > > > Do you plan on attending physically=3F Otherwise, would you be wi= lling to participate remotely=3F > > > > Best regards > > > > > > > > Dominique > > > > > > > > De : lp-wan on behalf of Bart Moons > > > > Date : Wednesday 18 December 2019 13:33 > > > > =C3=80 : =22lp-wan=40ietf.org (mailto:lp-wan=40ietf.org)=22 > > > > Objet : =5Blp-wan=5D SCHC C library > > > > > > > > > > > > Dear all, > > > > Last few months we worked hard on the implementation of the SCHC = standard and now I'm pleased to share the library with you, available her= e: https://github.com/imec-idlab/libschc . > > > > The implementation is based on draft-18, but provides a good star= ting point for experimenting and future implementations. > > > > =46eel free to comment and contribute=21 > > > > > > > > Best regards, > > > > Bart > > > > > > > > Bart Moons > > > > Ghent University - imec > > > > IDLab > > > > > > > > > > > > iGent Tower - Department of Information Technology > > > > Technologiepark-Zwijnaarde 15, B-9052 Ghent, Belgium (https://map= s.google.com/=3Fq=3DTechnologiepark-Zwijnaarde%2015%2C%20B-9052%20Ghent%2= C%20Belgium) > > > > > > > > bamoons.moons=40ugent.be (mailto:bamoons.moons=40ugent.be) +32 47= 2 42 23 91 (tel:%20+32%20472%2042%2023%2091) > > > > http://IDLab.UGent.be > > > > http://idlab.technology > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F > > > > > > > > Ce message et ses pieces jointes peuvent contenir des information= s confidentielles ou privilegiees et ne doivent donc > > > > pas etre diffuses, exploites ou copies sans autorisation. Si vous= avez recu ce message par erreur, veuillez le signaler > > > > a l'expediteur et le detruire ainsi que les pieces jointes. Les m= essages electroniques etant susceptibles d'alteration, > > > > Orange decline toute responsabilite si ce message a ete altere, d= eforme ou falsifie. Merci. > > > > > > > > This message and its attachments may contain confidential or priv= ileged information that may be protected by law; > > > > they should not be distributed, used or copied without authorisat= ion. > > > > If you have received this email in error, please notify the sende= r and delete this message and its attachments. > > > > As emails may be altered, Orange is not liable for messages that = have been modified, changed or falsified. > > > > Thank you. > > > > > > > > > > =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F > > > lp-wan mailing list > > > lp-wan=40ietf.org (mailto:lp-wan=40ietf.org) > > > https://www.ietf.org/mailman/listinfo/lp-wan > > > > > > > > > > -- > > DIEGO DUJOVNE > > Profesor Asociado > > Escuela de Inform=C3=A1tica y Telecomunicaciones > > =46acultad de Ingenier=C3=ADa - Universidad Diego Portales - Chile > > www.ingenieria.udp.cl (http://www.ingenieria.udp.cl) > > (56 2) 676 8125 > > > > > > > > > > > > =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F > > lp-wan mailing list > > lp-wan=40ietf.org (mailto:lp-wan=40ietf.org) > > https://www.ietf.org/mailman/listinfo/lp-wan > > > --5dfa4a7e_161fd265_4334 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
Hi Khaled,

You can find ROM and RAM usage in a paper w= e published ( http://hdl.handle.net/1854= /LU-8613162 ).
These numbers depend on the configuration of= the library and also the rules have a large impact on the ROM usage.
Regards,
Bart

Bart Moons
Ghent University - imec
IDLab<= /div>
iGent Tower - Department of Information Technol= ogy
<= a style=3D=22margin-right:8px=22 href=3D=22http://idlab.technology=22>htt= p://idlab.technology
On Dec 18 2019, at 4:43 p= m, Khaled Q. Abdelfadeel <khaled.abdelfadeel=40ieee.org> wrote:
Thanks, Bart for the good work. I w= as wondering if you have some numbers for the ROM and RAM requirements=3F=

Be= st,
Khaled

3D=22Sent=
On = Wed, Dec 18, 2019 at 3:19 PM Prof. Diego Dujovne <diego.dujovne=40mail.udp.cl> wrote:
=
Great news=21 
I have checked the implementation= and it is pretty complete.
It is nice to have a C-version for = embedded systems. I hope
to try it next month.
R= egards,

           = ;             Diego Dujovne

Le mer. 18 d=C3=A9c. 2019 =C3=A0 12:11, Bart Moons <bamoons.moons=40ugent.be> a =C3=A9crit :
Hi Dominique,

I might travel to V= ancouver, but Madrid (108) seems more feasible.. I will for sure try to p= articipate remotely=21

Regards,
Bart

<= /tr>
Bart Moo= ns
Ghent University - imec
IDLab
iGent Tower - Department of Information Technology
Technol= ogiepark-Zwijnaarde 15, B-9052 Ghent, Belgium
On Dec 18 2019, at 2:03 p= m, dominique.barthel=40orange.com wr= ote:

Hello Bart,

= This is great news, thanks a lot for your work and for letting us know=21=
We are currently discussing an interop at Hackathon107 (Vancou= ver).
Do you plan on attending physically=3F Otherwise, would y= ou be willing to participate remotely=3F
Best regards

Dominique

Date : Wednesday 18 December 2019 13:33<= /div>
=C3=80 : =22lp-wan=40ietf.org<= /font>=22 <<= font style=3D=22font-family:Calibri=22>lp-wan=40ietf.org>
Objet : =5Blp-wan=5D SCHC C= library

Dear all,=

Last few months we worked hard on the implementation of th= e SCHC standard and now I'm pleased to share the library with you, availa= ble here: https://github.com/imec-idlab/li= bschc .
The implementation is based on draft-18, but provid= es a good starting point for experimenting and future implementations.
=46eel free to comment and contribute=21

Best regar= ds,
Bart

=5F=5F=5F=5F=
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--
DIEGO DUJOVNE
Pro= fesor Asociado
Escuela de Inform=C3=A1tica y Telecomunicaciones=
=46acultad de Ingenier=C3=ADa - Universidad Diego Portales - C= hile
(56 2) = 676 8125
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banners=semtech.com,-,- X-VirusChecked: Checked Received: (qmail 19064 invoked from network); 19 Dec 2019 11:21:08 -0000 Received: from s72-38-248-231.static.datacom.cgocable.net (HELO ca01exedge1.semnet.dom) (72.38.248.231) by server-7.tower-325.messagelabs.com with ECDHE-RSA-AES256-SHA384 encrypted SMTP; 19 Dec 2019 11:21:08 -0000 Received: from CA01MAIL1.semnet.dom (10.2.50.40) by ca01exedge1.semnet.dom (192.168.34.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_RSA_WITH_AES_256_GCM_SHA384) id 15.1.1034.26; Thu, 19 Dec 2019 06:21:06 -0500 Received: from ca01mail2.semnet.dom (10.2.50.41) by CA01MAIL1.semnet.dom (10.2.50.40) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1034.26; Thu, 19 Dec 2019 06:21:06 -0500 Received: from ca01mail2.semnet.dom ([fe80::fdc8:c457:b09e:605d]) by ca01mail2.semnet.dom ([fe80::fdc8:c457:b09e:605d%22]) with mapi id 15.01.1034.026; Thu, 19 Dec 2019 06:21:06 -0500 From: Olivier Gimenez To: =?iso-8859-1?Q?=22Rodrigo_Mu=C3=B1oz_Lara=22?= CC: "lp-wan@ietf.org" , Laurent Toutain , Sandra Cespedes , Carles Gomez Montenegro Thread-Topic: [lp-wan] Implementation of SCHC Thread-Index: AQHVtC71AMox8TKVakiVAYHuVmKUH6e9+5dggAEkroCAAK1xgIAABPaAgABMpICAAD6sAIAA9V9Q Date: Thu, 19 Dec 2019 11:21:06 +0000 Message-ID: References: <324067fd222f4e3f844aa938b43a34fd@semtech.com> <3bd01033255a051f9052b943536f547a.squirrel@webmail.entel.upc.edu> In-Reply-To: <3bd01033255a051f9052b943536f547a.squirrel@webmail.entel.upc.edu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-dg-ref: PG1ldGE+PGF0IG5tPSJib2R5LnR4dCIgcD0iYzpcdXNlcnNcb2dpbWVuZXpcYXBwZGF0YVxyb2FtaW5nXDA5ZDg0OWI2LTMyZDMtNGE0MC04NWVlLTZiODRiYTI5ZTM1Ylxtc2dzXG1zZy1hM2Y3ZTc5MS0yMjUxLTExZWEtYjY1Zi1lNGIzMTg2NjNlZTFcYW1lLXRlc3RcYTNmN2U3OTMtMjI1MS0xMWVhLWI2NWYtZTRiMzE4NjYzZWUxYm9keS50eHQiIHN6PSI1ODgiIHQ9IjEzMjIxMjI4MDYzNzAxNTU0NyIgaD0iNlkyMFRWamJ2ZEZXeE9MUmlmN3hyeTJyZUh3PSIgaWQ9IiIgYmw9IjAiIGJvPSIxIi8+PC9tZXRhPg== x-dg-rorf: true x-originating-ip: [10.144.80.28] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: Subject: Re: [lp-wan] Implementation of SCHC X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Dec 2019 11:21:14 -0000 Hi, This has been initially written to avoid having a device sending all its S= CHC messages without a network, so the device would stop the transmission = after the first window and not the last one, thus prevent battery draining= for nothing. As it is a deviation from draft-ietf-lpwan-ipv6-static-conte= xt-hc protocol I changed it to a recommendation, please see this commit: https://github.com/Acklio/schc-over-lorawan/commit/1d72e1384a608f4d449f91f= ca17ac0bbabdd8a16 Do you agree with it ? Best regards Olivier To view our privacy policy, including the types of personal information we= collect, process and share, and the rights and options you have in this r= espect, see www.semtech.com/legal. 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to schc-lorawan draft Thread-Index: AQHVtMcHJhsBoaYewEKB34YDtbGzL6e+y90AgAEX8YCAABgSAIABY/nA Date: Thu, 19 Dec 2019 12:35:19 +0000 Message-ID: <1c076680e5104fbda59b5f62a053ad46@semtech.com> References: <20918_1576662727_5DF9F6C7_20918_455_1_DA1FB48F.6DC27%dominique.barthel@orange.com> In-Reply-To: <20918_1576662727_5DF9F6C7_20918_455_1_DA1FB48F.6DC27%dominique.barthel@orange.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-dg-ref: PG1ldGE+PGF0IG5tPSJib2R5Lmh0bWwiIHA9ImM6XHVzZXJzXG9naW1lbmV6XGFwcGRhdGFccm9hbWluZ1wwOWQ4NDliNi0zMmQzLTRhNDAtODVlZS02Yjg0YmEyOWUzNWJcbXNnc1xtc2ctMDE3M2QwYmItMjI1Yy0xMWVhLWI2NWYtZTRiMzE4NjYzZWUxXGFtZS10ZXN0XDAxNzNkMGJkLTIyNWMtMTFlYS1iNjVmLWU0YjMxODY2M2VlMWJvZHkuaHRtbCIgc3o9IjY4MzQiIHQ9IjEzMjIxMjMyNTE1NTEyNDg3MiIgaD0iN1IzaDEyS0JYUnJkSFJhRldvdXlHWUJrQ2ZZPSIgaWQ9IiIgYmw9IjAiIGJvPSIxIi8+PC9tZXRhPg== x-dg-rorf: true x-originating-ip: [10.144.80.28] Content-Type: multipart/alternative; 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ZpraIzOCMRFFvM4LOYzg3yUTKXmvkcaLAvIJTdthmueaI8XuCVytB/8/5zgKoaeuDAY6 3uESR/6U/uBZqzpOihJrioCQlGK57iY46FznbOF9XRtnVbjQOsrnAJ1LEvKHukgSbDFK 2vEA== X-Gm-Message-State: APjAAAXWGOag6x1anTEV+RoUALWsEvcaKc8t16QmbstCwwN6y7dzeyrW /XPQSXAxchlAqXfuS3fKabd9Ad4nRgAz7ksb7/gXoaaUmS0= X-Google-Smtp-Source: APXvYqxzXXNAMqtOCAjWCSV+LSUY6WUM5919egjgzdwhbUj/ux0jJ81XHb9f6x6tI9m+1QMvKP47SVbO3NROwRw3i8c= X-Received: by 2002:a02:a60e:: with SMTP id c14mr8215082jam.80.1576774259451; Thu, 19 Dec 2019 08:50:59 -0800 (PST) MIME-Version: 1.0 From: Alexander Pelov Date: Thu, 19 Dec 2019 17:50:00 +0100 Message-ID: To: lp-wan Content-Type: multipart/alternative; boundary="000000000000a04b3a059a115dcc" Archived-At: Subject: [lp-wan] Call for agenda items - interim meeting X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Dec 2019 16:51:02 -0000 --000000000000a04b3a059a115dcc Content-Type: text/plain; charset="UTF-8" Dear all, We will have our next interim meeting on January 8th (the Secretariat will send the invites shortly). Please send your request for presentation slot to the mailing list or the Chairs, so that we can prepare the Agenda. Regards, Pascal and Alexander --000000000000a04b3a059a115dcc Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dear all,

We will have our next interim= meeting on January 8th (the Secretariat will send the invites shortly).

Please send your request for presentation slot to th= e mailing list or the Chairs, so that we can prepare the Agenda.=C2=A0

Regards,
Pascal and Alexander

=
--000000000000a04b3a059a115dcc-- From nobody Fri Dec 20 06:48:57 2019 Return-Path: X-Original-To: lp-wan@ietf.org Delivered-To: lp-wan@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id A8C59120074; Fri, 20 Dec 2019 06:48:49 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: lp-wan@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.113.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: lp-wan@ietf.org Message-ID: <157685332952.4863.6087162830048048288@ietfa.amsl.com> Date: Fri, 20 Dec 2019 06:48:49 -0800 Archived-At: Subject: [lp-wan] I-D Action: draft-ietf-lpwan-schc-over-lorawan-05.txt X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Dec 2019 14:48:50 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the IPv6 over Low Power Wide-Area Networks WG of the IETF. Title : Static Context Header Compression (SCHC) over LoRaWAN Authors : Olivier Gimenez Ivaylo Petrov Filename : draft-ietf-lpwan-schc-over-lorawan-05.txt Pages : 24 Date : 2019-12-20 Abstract: The Static Context Header Compression (SCHC) specification describes generic header compression and fragmentation techniques for LPWAN (Low Power Wide Area Networks) technologies. SCHC is a generic mechanism designed for great flexibility so that it can be adapted for any of the LPWAN technologies. This document provides the adaptation of SCHC for use in LoRaWAN networks, and provides elements such as efficient parameterization and modes of operation. This is called a profile. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-lpwan-schc-over-lorawan/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-lpwan-schc-over-lorawan-05 https://datatracker.ietf.org/doc/html/draft-ietf-lpwan-schc-over-lorawan-05 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-lpwan-schc-over-lorawan-05 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Fri Dec 20 07:03:54 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CB3DE120088 for ; Fri, 20 Dec 2019 07:03:51 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id v58WLTaNoRMt for ; Fri, 20 Dec 2019 07:03:50 -0800 (PST) Received: from mail1.bemta24.messagelabs.com (mail1.bemta24.messagelabs.com [67.219.250.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3744112008B for ; 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banners=semtech.com,-,- X-VirusChecked: Checked Received: (qmail 5548 invoked from network); 20 Dec 2019 15:03:49 -0000 Received: from s72-38-248-231.static.datacom.cgocable.net (HELO ca01exedge1.semnet.dom) (72.38.248.231) by server-9.tower-334.messagelabs.com with ECDHE-RSA-AES256-SHA384 encrypted SMTP; 20 Dec 2019 15:03:49 -0000 Received: from ca01mail2.semnet.dom (10.2.50.41) by ca01exedge1.semnet.dom (192.168.34.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_RSA_WITH_AES_256_GCM_SHA384) id 15.1.1034.26; Fri, 20 Dec 2019 10:03:45 -0500 Received: from ca01mail2.semnet.dom (10.2.50.41) by ca01mail2.semnet.dom (10.2.50.41) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1034.26; Fri, 20 Dec 2019 10:03:46 -0500 Received: from ca01mail2.semnet.dom ([fe80::fdc8:c457:b09e:605d]) by ca01mail2.semnet.dom ([fe80::fdc8:c457:b09e:605d%22]) with mapi id 15.01.1034.026; Fri, 20 Dec 2019 10:03:46 -0500 From: Olivier Gimenez To: "lp-wan@ietf.org" Thread-Topic: [lp-wan] I-D Action: draft-ietf-lpwan-schc-over-lorawan-05.txt Thread-Index: AQHVt0SrWMKZBLqpZ0Wzt1Ey5eTT/qfDGvJA Date: Fri, 20 Dec 2019 15:03:45 +0000 Message-ID: <18f03903e7714d4da38f564b9917e566@semtech.com> References: <157685332952.4863.6087162830048048288@ietfa.amsl.com> In-Reply-To: <157685332952.4863.6087162830048048288@ietfa.amsl.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-dg-ref: PG1ldGE+PGF0IG5tPSJib2R5LnR4dCIgcD0iYzpcdXNlcnNcb2dpbWVuZXpcYXBwZGF0YVxyb2FtaW5nXDA5ZDg0OWI2LTMyZDMtNGE0MC04NWVlLTZiODRiYTI5ZTM1Ylxtc2dzXG1zZy1lOTVjN2M5MC0yMzM5LTExZWEtYjY2MC1lNGIzMTg2NjNlZTFcYW1lLXRlc3RcZTk1YzdjOTEtMjMzOS0xMWVhLWI2NjAtZTRiMzE4NjYzZWUxYm9keS50eHQiIHN6PSIyNTExIiB0PSIxMzIyMTMyNzgyMzQwMDc2ODciIGg9InVSWWh0bXluY2M3SVkzbXE4L0lveFptVzZEQT0iIGlkPSIiIGJsPSIwIiBibz0iMSIvPjwvbWV0YT4= x-dg-rorf: true x-originating-ip: [10.144.80.28] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: Subject: Re: [lp-wan] I-D Action: draft-ietf-lpwan-schc-over-lorawan-05.txt X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Dec 2019 15:03:52 -0000 Hi, I just pushed a new draft revision including the following changelog: * Fix typos and formatting * Add IID proposition * Clarify lot of paragraphs following Dominique review * Update acknowledgements * Change ACK behaviour between each windows to optional for uplink frag= mentation We proposed an algorithm for IID which is close to the discussion we had w= ith Dave Thaler during IETF-106, the idea is to create a hash derived from= DevEUI and AppSKey. AppSkey is the only candidate we can find shared by t= he SCHC gateway and the device, which changes over time (RFC8065), in our = case after each join/rejoin. This should also be validated by LoRaWAN secu= rity group to know if we can reuse AppSKey for such purpose There is another proposition based on RFC7217 which the IID is "stable for= each subnet": RID =3D F(Prefix, Net_Iface, Network_ID, DAD_Counter, secre= t_key), where Net_Iface can be DevEUI and Network_ID the LoRaWAN netid.=20= I prefer the first proposition as it will mitigate correlation over=20time= , the drawback is that we reuse AppSKey for something else than payload Lo= RaWAN protection. The second proposition need a way to share the secret_key before communica= tion and using LoRaWAN Netid might be an issue in passive roaming. Any thoughts or comments ? Thank you, and merry Christmas ! Olivier > -----Original Message----- > From: lp-wan On Behalf Of internet- > A New Internet-Draft is available from the on-line Internet-Drafts direc= tories. > This draft is a work item of the IPv6 over Low Power Wide-Area Networks = WG > of the IETF. >=20 > Title : Static Context Header Compression (SCHC) over = LoRaWAN > Authors : Olivier Gimenez > Ivaylo Petrov > Filename : draft-ietf-lpwan-schc-over-lorawan-05.txt > Pages : 24 > Date : 2019-12-20 >=20 > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-lpwan-schc-over-lorawan/ >=20 > There are also htmlized versions available at: > https://tools.ietf.org/html/draft-ietf-lpwan-schc-over-lorawan-05 > https://datatracker.ietf.org/doc/html/draft-ietf-lpwan-schc-over-lorawan= -05 >=20 > A diff from the previous version is available at: > https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-lpwan-schc-over-lorawan-0= 5 >=20 To view our privacy policy, including the types of personal information we= collect, process and share, and the rights and options you have in this r= espect, see www.semtech.com/legal. From nobody Fri Dec 27 05:34:21 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E4F9C12006E for ; Fri, 27 Dec 2019 05:34:18 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.299 X-Spam-Level: X-Spam-Status: No, score=-4.299 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=ing.uchile.cl header.b=QnguOEGn; dkim=pass (1024-bit key) header.d=ing.uchile.cl header.b=QnguOEGn Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uIh0EXf814Ia for ; Fri, 27 Dec 2019 05:34:16 -0800 (PST) Received: from mail.cec.uchile.cl (mail2.cec.uchile.cl [200.9.100.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5A770120046 for ; Fri, 27 Dec 2019 05:34:15 -0800 (PST) Received: from mail.cec.uchile.cl (localhost [127.0.0.1]) by mail.cec.uchile.cl (Postfix) with ESMTP id C7EAEA0809 for ; Fri, 27 Dec 2019 10:34:10 -0300 (-03) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.cec.uchile.cl C7EAEA0809 Authentication-Results: mail2.cec.uchile.cl; dmarc=pass (p=none dis=none) header.from=ing.uchile.cl Authentication-Results: mail2.cec.uchile.cl; spf=pass smtp.mailfrom=rmunozlara@ing.uchile.cl DKIM-Filter: OpenDKIM Filter v2.11.0 mail.cec.uchile.cl C7EAEA0809 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ing.uchile.cl; s=default; t=1577453650; bh=tP+2S7tQ6xhOU/kKXK8BdiSkmcyh2DvZng+rLy4/VZw=; h=From:Date:Subject:To:Cc:From; b=QnguOEGnN70dkr+0VRecfkiPMDQVSOMwBmVrVXi+9Sal3B6POZub8UkJ83c7s+fL8 3ijk1QZqQ4E/AIshROIX8IpAfQ7uO26cv5cgFCaq3ooT8J6+Pn760ZJTopIwEaaWut HfSCWVyoOpcVkuBdKc3Hc2CHXcUChWkG1cRdddLE= Received: from mail-vs1-f50.google.com (mail-vs1-f50.google.com [209.85.217.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (not verified)) by mail.cec.uchile.cl (Postfix) with ESMTPSA id 45C4AA0815 for ; Fri, 27 Dec 2019 10:34:10 -0300 (-03) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.cec.uchile.cl 45C4AA0815 Authentication-Results: mail2.cec.uchile.cl; dmarc=pass (p=none dis=none) header.from=ing.uchile.cl Authentication-Results: mail2.cec.uchile.cl; spf=pass smtp.mailfrom=rmunozlara@ing.uchile.cl DKIM-Filter: OpenDKIM Filter v2.11.0 mail.cec.uchile.cl 45C4AA0815 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ing.uchile.cl; s=default; t=1577453650; bh=tP+2S7tQ6xhOU/kKXK8BdiSkmcyh2DvZng+rLy4/VZw=; h=From:Date:Subject:To:Cc:From; b=QnguOEGnN70dkr+0VRecfkiPMDQVSOMwBmVrVXi+9Sal3B6POZub8UkJ83c7s+fL8 3ijk1QZqQ4E/AIshROIX8IpAfQ7uO26cv5cgFCaq3ooT8J6+Pn760ZJTopIwEaaWut HfSCWVyoOpcVkuBdKc3Hc2CHXcUChWkG1cRdddLE= Received: by mail-vs1-f50.google.com with SMTP id x123so16900087vsc.2 for ; Fri, 27 Dec 2019 05:34:10 -0800 (PST) X-Gm-Message-State: APjAAAUdU356LszzR2QAjBsK+evtJ61FWBkEsIP3ZTqtODlf+HHC6b1h 4VqV7Cv9LkwkZSbykQETVXcy9YAzxDfJ5jbWFWI= X-Google-Smtp-Source: APXvYqy8La/FL7hDYNPRgBTq9vXTGEqN3XUqg3lcFWr1flXTIUhSDlC3dO2tbCyZCBYOV5mAxd0wfhmxHxN1jKZSRec= X-Received: by 2002:a05:6102:250:: with SMTP id a16mr14766573vsq.167.1577453648867; Fri, 27 Dec 2019 05:34:08 -0800 (PST) MIME-Version: 1.0 From: =?UTF-8?Q?Rodrigo_Mu=C3=B1oz_Lara?= Date: Fri, 27 Dec 2019 10:33:58 -0300 X-Gmail-Original-Message-ID: Message-ID: To: lp-wan@ietf.org Cc: ogimenez@semtech.com, Sandra Cespedes Content-Type: multipart/alternative; boundary="0000000000006415d5059aaf8c54" X-Virus-Scanned: ClamAV using ClamSMTP Archived-At: Subject: [lp-wan] Doub about sending missing tiles X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Dec 2019 13:34:19 -0000 --0000000000006415d5059aaf8c54 Content-Type: text/plain; charset="UTF-8" Dear Author, I have a question about draft "draft-ietf-lpwan-ipv6-static-context-hc-24". In section 8.3.1.2 say: "*On receiving a SCHC ACK, if the W field in the SCHC ACK not corresponds to the last window of the SCHC Packet:* - *MUST send SCHC Fragment messages containing the tiles that reported missing in the SCHC ACK*" What happened if the missing tiles do not fit in a SCHC fragment? Regards --0000000000006415d5059aaf8c54 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dear Author,=C2=A0=C2=A0
=C2=A0
I have a question=C2=A0about draft "draft-ietf-lpwan-ipv6-static-co= ntext-hc-24". In section 8.3.1.2 say:

"<= i>On receiving a SC= HC ACK,=C2=A0if= the W field in the SCHC ACK not corresponds to the last window of= =C2=A0the SCHC = Packet:
  • MUST send SCHC Fragment messages containing the til=
es that reported missing in the SCHC ACK"

What happened if the missing tiles = do not fit in a SCHC fragment?=C2=A0

Regard= s
--0000000000006415d5059aaf8c54-- From nobody Mon Dec 30 09:29:59 2019 Return-Path: X-Original-To: lp-wan@ietfa.amsl.com Delivered-To: lp-wan@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2203A120B43 for ; Mon, 30 Dec 2019 09:29:58 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.598 X-Spam-Level: X-Spam-Status: No, score=-2.598 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id R8LBe5HDzJ_p for ; Mon, 30 Dec 2019 09:29:56 -0800 (PST) Received: from relais-inet.orange.com (relais-inet.orange.com [80.12.70.35]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2B394120B42 for ; Mon, 30 Dec 2019 09:29:56 -0800 (PST) Received: from opfednr05.francetelecom.fr (unknown [xx.xx.xx.69]) by opfednr26.francetelecom.fr (ESMTP service) with ESMTP id 47mkvk2qWHz109H; Mon, 30 Dec 2019 18:29:54 +0100 (CET) Received: from Exchangemail-eme6.itn.ftgroup (unknown [xx.xx.13.98]) by opfednr05.francetelecom.fr (ESMTP service) with ESMTP id 47mkvk255mzyPk; Mon, 30 Dec 2019 18:29:54 +0100 (CET) Received: from OPEXCAUBM21.corporate.adroot.infra.ftgroup ([fe80::d42b:2e80:86c2:5905]) by OPEXCAUBM7F.corporate.adroot.infra.ftgroup ([fe80::d9:d3cd:85bd:d331%21]) with mapi id 14.03.0468.000; Mon, 30 Dec 2019 18:29:54 +0100 From: To: =?utf-8?B?Um9kcmlnbyBNdcOxb3ogTGFyYQ==?= , "lp-wan@ietf.org" CC: "ogimenez@semtech.com" , Sandra Cespedes Thread-Topic: [lp-wan] Doub about sending missing tiles Thread-Index: AQHVvLpcCfBOkyHPakOawno2+LUsqafS9AaA Date: Mon, 30 Dec 2019 17:29:53 +0000 Message-ID: <30188_1577726994_5E0A3412_30188_419_1_DA2FF070.6E08D%dominique.barthel@orange.com> References: In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: fr-FR X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.7.3.170325 x-originating-ip: [10.114.13.245] Content-Type: multipart/alternative; boundary="_000_DA2FF0706E08Ddominiquebarthelorangecom_" MIME-Version: 1.0 Archived-At: Subject: Re: [lp-wan] Doub about sending missing tiles X-BeenThere: lp-wan@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Low-Power Wide Area Networking \(LP-WAN\), also known as LPWA or Low-Rate WAN \(LR-WAN\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Dec 2019 17:29:58 -0000 --_000_DA2FF0706E08Ddominiquebarthelorangecom_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 SGVsbG8gUm9kcmlnbywNCg0KVGhhbmtzIGZvciB5b3UgbWFpbC4NCkknbSB1bnN1cmUgYWJvdXQg 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Ghent University - imec
IDLab
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