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From: Kalle Valo <Kalle.Valo@nokia.com>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: Jouni Malinen <j@w1.fi>, Michael Buesch <mb@bu3sch.de>,
	linux-wireless <linux-wireless@vger.kernel.org>,
	Ben Greear <greearb@candelatech.com>,
	Michael Wu <flamingice@sourmilk.net>, Jiri Benc <jbenc@suse.cz>
Subject: Re: [RFC] b43: multiple MAC addresses support
Date: Thu, 15 Nov 2007 11:35:29 +0200	[thread overview]
Message-ID: <877ikjsvfi.fsf@nokia.com> (raw)
In-Reply-To: <1194953217.9116.38.camel@johannes.berg> (ext Johannes Berg's message of "Tue\, 13 Nov 2007 12\:26\:57 +0100")

Johannes Berg <johannes@sipsolutions.net> writes:

> On Mon, 2007-11-12 at 13:14 +0200, Kalle Valo wrote:
>
>> Exactly, it is important for small mobile devices that beacons are
>> sent at the correct time. For example, I have seen broken APs which
>> Target Beacon Transmission Time fluctuates and Nokia N800 has high
>> power consumption because of that.
>
> The N800 and similar devices only wake up at DTIM beacons, right?

At least N800 and N810 do, we don't want to miss any of broadcast and
multicast traffic. But I don't know how other mobile devices wakeup
for beacons.

> So another idea would be to burst beacons but make sure the DTIM
> beacon time doesn't fluctuate away from the DTIM TBTT. This would be
> possible by changing the order of the beacons and adjusting the DTIM
> count so that the beacon with DTIM count zero is always the first.

At least from my point of view that could possible. Of course it feels
like a bit of a hack, but I guess there's no clean way to implement
this.

-- 
Kalle Valo

  reply	other threads:[~2007-11-15  9:45 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-11-09  1:43 [RFC] b43: multiple MAC addresses support Johannes Berg
2007-11-09 10:33 ` Johannes Berg
2007-11-09 10:52 ` Johannes Berg
2007-11-11  2:58   ` Jouni Malinen
2007-11-12 11:14     ` Kalle Valo
2007-11-13 11:26       ` Johannes Berg
2007-11-15  9:35         ` Kalle Valo [this message]
2007-11-15 16:40           ` Johannes Berg
2007-11-18 23:02         ` Jouni Malinen
2007-11-19 14:50           ` Johannes Berg
2007-11-13 14:14       ` Johannes Berg
2007-11-12 12:02     ` Johannes Berg
2007-11-18 23:47       ` Jouni Malinen
2007-11-19 14:49         ` Johannes Berg
2007-11-09 10:53 ` [RFC] b43: fix multi MAC address hardware crypto support Johannes Berg
2007-11-09 12:39   ` Johannes Berg
2007-11-10  1:21   ` [RFC v2] " Johannes Berg
2007-11-09 12:25 ` [RFC] b43: multiple MAC addresses support Johannes Berg
2007-11-10  1:20 ` [RFC v2] " Johannes Berg
2007-11-10  1:53 ` [RFC] " Johannes Berg
2007-11-10 21:34   ` Johannes Berg

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