Re: [RFC] b43: multiple MAC addresses support

[Kalle Valo <Kalle.Valo@nokia.com>]

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