On 17/12/2019, Ben Greear <greearb@xxxxxxxxxxxxxxx> wrote: > On 12/17/19 10:29 AM, Tom Psyborg wrote: >> On 17/12/2019, Ben Greear <greearb@xxxxxxxxxxxxxxx> wrote: >>> On 12/17/19 8:23 AM, Justin Capella wrote: >>>> I believe someone recently submitted a patch that defined noise floors >>>> per band (2/5). >>> >>> I looked at using the real noise floor. Our radio was reporting a noise >>> floor of around -102, >>> where the hard-coded default is -95. This of course would make the >>> reported >>> RSSI lower by 7db >>> in that case. I am not sure that is correct. >>> >> >> Hi >> >> I am getting similar NF values with all my ath10k devices, I thought >> default was changed since ath9k from -95 to -115 just like in the >> vendor driver? There were some discussions about it on mailing list. >> On some channels (5Ghz) the value goes down to about -107, even saw >> -110 once. >> > > If you use ath9k and ath10k on same channel/environment, do you see similar > RSSI reported (especially with the ath10k patch I just posted)? > > Thanks, > Ben > > -- > Ben Greear <greearb@xxxxxxxxxxxxxxx> > Candela Technologies Inc http://www.candelatech.com > > Nope. RSSI values are quite different between two cards. Applying this patch also made no difference on ath10k card, but this might be due to the fact the network wasn't setup (so no data passed through) in order to keep tx rx rates at 6 Mbps. First I put AR9462 card in Archer C7 and connect to Litebeam5AC (CH36,VHT80) commands output from archer: iwinfo: signal: -65dBm noise: -94dBm txpower: 14dBm iw wlan1 station dump: signal: -65 [-69, -67] dBm signal avg: -65 [-68, -67] dBm with the default 14dBm power the RSSI in Litebeam was -72dBm Then I put QCA9880 in archer and connected to the same AP: commands output from archer: iwinfo: signal: -58dBm noise: -102dBm txpower: 23dBm iw wlan0 station dump: signal: -59 [-65, -64, -62] dBm signal avg: -58 [-65, -63, -62] dBm RSSI of the card reported in Litebeam -63dBm (very inconsistent between wifi restarts on archer, -65, -67 even -69 dBm, and no software reboot would restore card's full power, only cold boot) next I lowered the power of the card to 14dBm to match AR9462 iwinfo: signal: -57 dBm noise: -101 dBm txpower: 14 dBm iw wlan0 station dump signal: -57 [-62, -62, -61] dBm signal avg: -57 [-62, -62, -61] dBm now the RSSI in litebeam dropped to approx. -75dBm
