Automatically selecting channel

Jouni Malinen jkmaline at cc.hut.fi
Wed Feb 4 21:19:40 EST 2004


On Mon, Feb 02, 2004 at 01:20:44AM +0100, Vaclav Dvorak wrote:

> This raised my curiosity: doesn't the automatic scanning affect 
> performance? I suppose that for scanning, the card must briefly tune the 
> receiver to all channels in sequence, and therefore during that short 
> time period it can't listen to transmissions on the channel where it's 
> properly associated - is that true? Would disabling roaming help 
> performance, then?

Yes, there will be short cap in connection whenever another channel is
being scanned. I would assume most applications do not notice this. If
the station code is implemented to avoid scanning other channels when
there is lot of traffic going on and/or when the signal level of the
current AP remains good, this background scanning should not cause much
problems. If you happen to have a case where absolutely maximum
performance and no latencies is required and roaming is not needed, you
could of course disable scanning.

-- 
Jouni Malinen                                            PGP id EFC895FA



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