Subject: [manet] What is the sequence number for in 802.11 MAC?

From: Leon Martin <[email-masked]>
Date: Wed, 6 Apr 2005 12:08:27 -0700 (PDT)

Hi all,

In 802.11 standard 1999, there is a 12-bit sequence
number at the MPDU (see figure 14-Sequence Control
field on page 40). What is it for?

Do we need sequencing MPDUs at the MAC layer? I think
we can uniquely identify a data frame or ACK frame
through the source address and destination address
pair, since there is at most one MPDU involved in the
MAC activities of a single node.

Thanks.

- Leon 

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