Bug 2469 – send Block Ack Request upon short/long retry failures

Bug 2469 - send Block Ack Request upon short/long retry failures


Summary:	send Block Ack Request upon short/long retry failures

Status:	RESOLVED FIXED

Product:	ns-3
Classification:	Unclassified
Component:	wifi
Version:	ns-3.25
Hardware:	All All

Importance:	P5 normal
Assigned To:	sebastien.deronne

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2016-08-07 14:46 UTC by Tom Henderson
Modified:	2016-08-10 15:01 UTC (History)
CC List:	1 user (show)

See Also:

Attachments
patch to fix (783 bytes, patch) 2016-08-07 14:46 UTC, Tom Henderson	Details \| Diff
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Description Tom Henderson 2016-08-07 14:46:21 UTC

Created attachment 2528 [details]
patch to fix

The current code in edca-txop-n.cc, upon a MissedCts () and MissedAck () condition, checks if an A-MPDU exists (and later, whether a block ack association exists) before sending a Block Ack Request to advance the left edge of the reordering buffer window.  However, it can be the case that the current packet is not part of an A-MPDU, nor later packets, in which case the Block Ack Request is never sent and later packets are not delivered (i.e. the reordering buffer blocks on the sequence number gap).

A small patch can enable the sending of the block ack request in this case.

Comment 1 sebastien.deronne 2016-08-07 14:51:33 UTC

Patch is fine

Comment 2 sebastien.deronne 2016-08-10 15:01:57 UTC

pushed in changeset 12253:4128d362edc0