On 23 March 2015 at 16:16, Cedric VONCKEN <cedric.voncken@xxxxxxxxx> wrote: > In 802.11ac standard, it is possible to dynamically reduce the channel > width used. > My question is: > If I use a channel with 80 or 40 MHz width, what will happen if > I detect radar? > The ath10k card/driver reduces automatically the channel > width. Currently entire chandef occupied will be marked as unavailable and AP will stop/switch to a different non-overlapping chandef via CSA. I guess it should be possible to implement what you suggest, i.e. change only chandef width when radar is narrow and located at a suitable part of the chandef. This would require hw to be capable of detecting radar center freq and width accurately. I'm not sure if QCA988X is capable of that although firmware interface seems to be able to carry this kind of information already. I wonder why would you want this behaviour in the first place? Wouldn't this actually end up with having less bandwidth and lower throughput (which is already penalized when radar detection is active)? Michał -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
