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Re: [STDS-802-11-TGBN] Co-BF/Co-SR Trigger frame format discussion

Confirm that in CoSR, the number of UHR-SIG symbols is fixed to 1. No signaling is needed.

Regards,
Alice


On Thu, Jan 15, 2026 at 12:34 PM Ron Porat <000009a0da80e877-dmarc-request@xxxxxxxxxxxxxxxxx> wrote:
Hi Jason,

Please also review these two comments on your doc:


>> When the MAPC Trigger Type field is equal to 2, the Number Of UHR-LTF Symbols field indicates the number of UHR-LTF symbols of the PPDU transmitted by the Co-SR coordinating AP in the Co-SR transmission, and is equal to the value of the field plus 1.
Comment 1:
- This should also apply to any EHT MU PPDU transmitted with CoSR mode 1 (for preamble alignment as indicated above).

>> When the MAPC Trigger Type field is equal to 3, the Number Of UHR-SIG Symbols field indicates the number of UHR-SIG symbols of the PPDU of the Co-SR transmission, and is equal to the value of the field plus 1. When the MAPC Trigger Type field is equal to 2, the Number Of UHR-SIG Symbols field indicates the number of UHR-SIG symbols of the PPDU transmitted by the Co-SR coordinating AP in the Co-SR transmission, and is equal to the value of the field plus 1.
Comment 2:
- Actually, the number of UHR-SIG symbols does not need to be signaled at all in the trigger frame. It is defined to be 1 (with UHR-SIG/EHT-SIG MCS fixed to be 0) as I recall

Thanks,
Ron



From: Guoyuchen (Jason Yuchen Guo) <000018696e95f088-dmarc-request@xxxxxxxxxxxxxxxxx>
Sent: Thursday, January 15, 2026 9:55 AM
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBN] Co-BF/Co-SR Trigger frame format discussion

 

Dear TGbn members,

 

I have uploaded a revision of doc. 0023 based on the feedback from members.

 

Best,

Jason

 

 

发件人: Guoyuchen (Jason Yuchen Guo)
发送时间: 2026年1月15日 9:16
收件人: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
主题: Co-BF/Co-SR Trigger frame format discussion

 

Dear TGbn members,

 

Please let me know your feedback on doc. 11-26/0023r1 on Co-BF/Co-SR Trigger frame format, thank you!

 

Best,

Jason

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