Return-path: Received: from nm28-vm2.bullet.mail.sg3.yahoo.com ([106.10.151.145]:25490 "EHLO nm28-vm2.bullet.mail.sg3.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753247AbaDED23 convert rfc822-to-8bit (ORCPT ); Fri, 4 Apr 2014 23:28:29 -0400 Message-ID: <1396668507.37072.YahooMailBasic@web193504.mail.sg3.yahoo.com> (sfid-20140405_052850_140701_32537910) Date: Sat, 5 Apr 2014 11:28:27 +0800 (SGT) From: sandeep suresh Subject: RE: [ath9k-devel] Wifi client Bluetooth coexistence; non smooth video streams To: =?utf-8?B?6ams5paH5rab?= Cc: Adrian Chadd , ath9k-devel , "linux-wireless@vger.kernel.org" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hello Mr.马文涛, Thanks for your suggestions....will try and let u know the results. Regards Sandeep. -------------------------------------------- On Fri, 4/4/14, 马文涛 wrote: Subject: RE: [ath9k-devel] Wifi client Bluetooth coexistence; non smooth video streams To: "sandeep suresh" Date: Friday, 4 April, 2014, 11:59 PM Hi sandeep, I never used wifi just like you. So I only have some advices for you.1. Video needs more throughput, so 7:3 or 8:2 seams better.2. If you use RTSP to transmit video, I guess you can short the switch time to reduce the delay. Just try to set period to 100ms or less for test. I think it will be better.  > Date: Fri, 4 Apr 2014 09:55:40 +0800 > From: sandeep.suresh@yahoo.co.in > To: adrian@freebsd.org; ath9k-devel@lists.ath9k.org; linux-wireless@vger.kernel.org > Subject: [ath9k-devel] Wifi client Bluetooth coexistence; non smooth video streams > > Dear all, > Please help if any one have encountered simillar problems or other guidance on this, Please. > > The following is my set-up: > Linksys Access point. Cisco 802.11g camera connected as a wifi client to Linksys. I have a development board in which i have AR9287 as the Wifi chipset associated as wifi client to linksys. The development board has Bluetooth dongle for streaming audio etc. The development board has a LCD display and I stream the video stream from camera at 640 x 480 resolution, MPEG-4, 10fps (also tried with 15, 30 fps). > > Software: For the Wifi client on the development board, I am using the ath9k driver with btcoex_enable=1. > 2-wire coexistence. I am allowing 40% of the time for Bluetooth an 60% of the time for WiFi. The period is around 200ms. > > Observations: > 1. The video streams are not smooth. There will be a small pause of a second or two between frames and hence we do not see smooth transitions. > 2. Sometimes it looks like, the streams are bufferred and played back at a rapid pace. So, one can see like a fast forward play of video streams on the board. > 3. Disabling coexistence does not have these observations. > Please help. > Regards > Sandeep. > _______________________________________________ > ath9k-devel mailing list > ath9k-devel@lists.ath9k.org > https://lists.ath9k.org/mailman/listinfo/ath9k-devel