Bug 2604

Summary:	QosData frames with Block Ack policy should be separated by SIFS as long as they belong to the same TXOP
Product:	ns-3	Reporter:	sebastien.deronne
Component:	wifi	Assignee:	sebastien.deronne
Status:	RESOLVED FIXED
Severity:	major	CC:	ns-bugs
Priority:	P2
Version:	ns-3.26
Hardware:	All
OS:	All
Bug Depends on:
Bug Blocks:	2528
Attachments:	patch to fix patch to fix

Description sebastien.deronne 2017-01-02 10:37:35 UTC

When Block Ack is used, a station sends several QosData frames separated by SIFS, that will be later acknowledged by a single Block Ack. In the current implementation, a backoff is performed between each QosData frame, resulting in almost no benefit to use Block Ack mechanism.

Comment 1 sebastien.deronne 2017-01-02 10:47:41 UTC

Created attachment 2722 [details]
patch to fix

Comment 2 sebastien.deronne 2017-01-03 16:23:55 UTC

Created attachment 2729 [details]
patch to fix

Updated previous patch:
- QosData frames separated by SIFS when they fit in the same TXOP, trigger backoff otherwise
- Fix issues with txop trace

Comment 3 sebastien.deronne 2017-01-07 06:33:04 UTC

Set to LAST CALL since blocking other deliveries

Comment 4 sebastien.deronne 2017-01-24 14:03:08 UTC

I plan to deliver the patch this week

Comment 5 sebastien.deronne 2017-01-29 17:07:04 UTC

Fixed in changeset 12590:c1c446434852