Channel interference scan and manual selection

Adrian Chadd adrian at freebsd.org
Wed Dec 4 03:40:24 UTC 2013


On 3 December 2013 19:32, Tek Wiz <tx2023 at gmail.com> wrote:
> Yes, the interference can be calculated by averaging the beacon RSSI (dB) of
> the overlapping channels, e.g. for channel 6, the beacon RSSI of channels 4,
> 5, 6, 7, 8 are averaged. Normally channels 1, 6, and 11 are chosen, although
> other channels may have less interference, in order to be a 'good neighbor'.

Sure. But we can also look at what kinds of frames we actually receive
during a sample window.

What I'd also like to do is finally add receive power histogram
support. Ie, look at the RSSI of all the frames you receive, stick
them in buckets, respond to the power histogram action request frames,
use them for this.. that doesn't require any driver support. Just
net80211 work in the RX path.



-adrian


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