On Fri, 2019-09-20 at 11:09 -0400, Tim Higgins wrote: > On 9/19/2019 6:05 PM, Johannes Berg wrote: > > Hi Tim, > > > > > I have been using the debug hw_sniffer_params file to tune the AX200 to a specific AID. This > > > works well for capturing OFDMA DL. But I have yet to capture any UL OFDMA frames, or at least I > > > don't think I have. > > > > > > I am looking for QoS data frames that have HE_MU PPDU format. Is this correct? > > > I can see plenty of HE_SU PPDU frames from STA to AP, but no HE_MU uplink. > > > > > > Am I looking for the wrong thing or can the AX200 not sniff OFDMA UL? > > UL OFDMA frames should be HE_TB PPDU format, not HE_MU. They can only be > > sent as a response to trigger frames, so all the participants are > > synchronized etc. > > > > johannes > > Thanks, Johannes. I believe Wireshark shows HE_TB as HE_TRIG (0x3) > under HE information > HE Data 1, correct? Right, see http://www.radiotap.org/fields/HE johannes
