Subject: [rmcat] SCReAM evaluation #2

From: Ingemar Johansson S <[email-masked]>
Date: Wed, 17 May 2017 20:35:28 +0000

Hi

I took SCReAM out for a test drive, this time transmitting video from a car, over the LTE network to my office, the details are found at.
https://github.com/EricssonResearch/scream#real-life-test

Enjoy 30+ minutes of Luleå and surroundings in a sunny (way too late spring) weather, who said congestion control is boring to work with ? :)

If you are eager to see the problematic scenes, scroll the video to 8m40s. Problems with very poor coverage occur at 28m20s.

One unexpected feature is that there are packet drops, these packet drops seem to be related to handover events. The packet loss rate is not very high (average 0.2%) but it is high enough to produce noticeable artifacts.
Packet loss should actually not occur but it seems like the tethered Android phone discard packets in the send buffer, further investigations are ongoing...

/Ingemar

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Ingemar Johansson  M.Sc.
Master Researcher

Ericsson AB
Wireless Access Networks
Labratoriegränd 11
971 28, Luleå, Sweden
Phone +46-1071 43042
SMS/MMS +46-73 078 3289
[email-masked]<mailto:[email-masked]>
www.ericsson.com

A mistake is to commit a misunderstanding
                     Bob Dylan
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