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| --- This message came from the IEEE 802.11 Task Group M Technical Reflector ---
All, This thread seems to have died off, long ago, without resolution. At this point, I suggest the following: Proposed: REJECTED (MAC: 2022-08-29 23:23:28Z): The TG did not reach agreement to enable use of Non-HT Duplicate group addressed PPDUs in 6 GHz. The intent of this comment can be brought back with a new comment on the next ballot, if desired. Thoughts/comments? Mark From: Youhan Kim <youhank@xxxxxxxxxxxxxxxx> --- This message came from the IEEE 802.11 Task Group M Technical Reflector --- Hi, Jarkko.
For the benefit of those who were not on the meeting, I will re-iterate my thoughts on this. 6 GHz is a great opportunity for the WLAN users thanks to its wide spectrum and lack of ‘legacy’ WLAN devices. It took many years of concerted effort from the industry to get this precious spectrum for WLAN, and we should not rush to make it yet another “2.4 GHz” spectrum. High throughput and low latency are becoming more and more important in many of WLAN use cases, such as XR/VR, gaming, video conferencing, etc. While other spectrum can and will be utilized to serve those use cases as well, the 6 GHz spectrum is uniquely positioned to serve those use cases most effectively using the wide spectrum bandwidth and having only HE and EHT STAs in the network. If we, however, allow very spectrally inefficient modulations to hog the 6 GHz spectrum (e.g. 0.0187 bps/Hz for 320 MHz Non-HT Duplicate using BPSK ½), then other users needing high throughput and/or low latency will be severely impacted. Please note that any practical 6 GHz 11ax/be APs support at least dual-band, if not tri-band. Hence, users can switch to 2.4 or 5 GHz when the 6 GHz range does not serve their purpose – and leave the 6 GHz band for high efficiency, extremely high throughput, and low latency applications. Thanks. Youhan From: Chen, Xiaogang C <xiaogang.c.chen@xxxxxxxxx> WARNING: This email originated from outside of Qualcomm. Please be wary of any links or attachments, and do not enable macros. --- This message came from the IEEE 802.11 Task Group M Technical Reflector --- Hi Jarkko By looking into the discussion part, those “may/can” may not be true😊. It depends on receiver capability. Even enabling the group addressed frame in non-HT dup, transmitter will very likely struggle to figure out if receiver can really leverage the feature. In other words, it’s hard to be used in field for 11ax link, or even 11be link. IMO, this could be good direction but don’t need to rush into the current draft. The associated STAs may receive non-HT duplicate frames similarly as the non-HT frames. The 802.11 allows Beacon frames transmission in the 6 GHz band in non-HT duplicate format. These Beacon frames in the 6 GHz band may have longer coverage than group addressed data frames. To enable the associated STAs in such BSS to receive group addressed frames and Beacons, the AP should transmit the group frames as non-HT duplicate frames and 802.11 should clearly define the rules for the group frames transmission. The FCC 6 GHz regulation allows Low-power-indoor (LPI) APs and STAs that can have constant power spectral density. The LPI devices can have longer range for non-HT duplicate frames than for Non-HT frames. BRs, Xiaogang. From: Jarkko Kneckt <00000d5619618f4f-dmarc-request@xxxxxxxxxxxxxxxxx> --- This message came from the IEEE 802.11 Task Group M Technical Reflector --- Hi, I presented submission 22/329 in 802.11me call yesterday. Mike Montemurro asked to open up a discussion thread on CID 1195. CID 1195 proposes to allow group addressed data frame transmission in the 6 GHz band by using non-HT duplicate PPDUs. The submission 329 is updated to include the off-line comments from Mark Rison: https://mentor.ieee.org/802.11/dcn/22/11-22-0329-02-000m-resolutions-to-cids-1195-1198.docx Please email to me or reply to this email if you have comments on the CID 1195. Cheers, Jarkko To unsubscribe from the STDS-802-11-TGM list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-TGM&A=1 To unsubscribe from the STDS-802-11-TGM list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-TGM&A=1 To unsubscribe from the STDS-802-11-TGM list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-TGM&A=1 To unsubscribe from the STDS-802-11-TGM list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-TGM&A=1 |