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
