Re: iwlwifi aggregation info

Tomas Winkler
2008-08-06T22:05:54Z

On Thu, Aug 7, 2008 at 12:45 AM, Johannes Berg
<johannes@sipsolutions.net> wrote:
>
>> When that is not the case, however, we disagree. I think that because
>> aggregation isn't a QoS mechanism, it should behave the same way as in
>> the case where no stations have aggregation enabled, and stall the whole
>> queue. On the other hand, you think it is a QoS mechanism, and let
>> streams for the fast stations be interleaved with the slow station,
>> leaving only frames for the slow station piling up.
>
> I just found IEEE 802.11-2007 subclause 9.10 which actually explains all
> the block-ack business without aggregation, but I assume that
> aggregation now just means that instead of sending
> mpdu + sifs + (mpdu + sifs)* + blockackreq
> you send simply
> a-mpdu
>
> I see nothing in 9.10 that supports the view that aggregation/block-ack
> should create a new traffic stream.

It doesn't have to be spelled, it's clear from the fact that traffic
is defined by <TID,RA> pair.
A-MPDU stuff is simplified version of what you've read there.
Tomas