[ath9k-devel] strange MPDU loss pattern

[Ali Abedi <a2abedi@uwaterloo.ca>]

Hi,

Yes we look at the BA bitmap and also too we have printks in the driver 
that
tells us what happened to the MPDUs in an aggregated frame.

Thanks,
Ali


On 24/10/2014 12:13 PM, Kamran Nishat wrote:
> How did u determine that? only by looking at the Bitmaps in BlockAcks?
>
> On Fri, Oct 24, 2014 at 9:04 PM, Ali Abedi <a2abedi@uwaterloo.ca 
> <mailto:a2abedi@uwaterloo.ca>> wrote:
>
>     Hello,
>
>     We study the effects of 802.11n frame aggregation on throughput. We
>     noticed a
>     strange pattern in the MPDU loss within an aggregated frame. It seems
>     that the
>     second half of the MPDUs (those with higher sequence numbers) in an
>     aggregated frame
>     are more likely to be lost. Is this a known fact or is there any
>     explanation for it?
>
>     For example if 32 frames are aggregated with sequence numbers 100
>     to 131.
>     Frames with sequence numbers 100-115 are more likely to be received
>     correctly
>     than 116-131.
>
>
>     Best,
>     Ali
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>

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