From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ali Abedi Date: Fri, 24 Oct 2014 12:25:04 -0400 Subject: [ath9k-devel] strange MPDU loss pattern In-Reply-To: References: <544A7871.7020005@mailservices.uwaterloo.ca> Message-ID: <544A7D60.9090605@mailservices.uwaterloo.ca> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org 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 > 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 > _______________________________________________ > ath9k-devel mailing list > ath9k-devel at lists.ath9k.org > https://lists.ath9k.org/mailman/listinfo/ath9k-devel > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.ath9k.org/pipermail/ath9k-devel/attachments/20141024/fca5fb5f/attachment.htm