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Re: [STDS-802-11-TGBN] Regarding the SP text (Doc. 25/0645r1)



Hi Xiangxin,

Thank you for your reply.

My submission is pointing out the scenario of an R-TWT SP of my BSS, not an R-TWT SP of OBSS (Co-RTWT operation). I think Co-RTWT operation on the NPCA primary channel is a separate issue.
An intention of the submission is: On the NPCA primary channel, the R-TWT SP of my BSS should be respected as the same as the BSS primary channel.
The current 11bn draft does not clarify this. Therefore, I would like to add some clarification on this problem.

Best Regards,

Juseong Moon

2025. 8. 26. 오후 3:41, 顾祥新 (Xiangxin Gu) <Xiangxin.Gu@xxxxxxxxxx> 작성:

Hi Juseong,
 
Thanks for the contribution.
The best way to protect a R-TWT SP from OBSS occupation is Co-RTWT.
For those that are not protected by Co-RTWT, the AP can get access NPCA PCH prior to non-AP STAs by implementation (see 37.18.2 MU EDCA interaction with NPCA) when the starting time of a R-TWT SP happens in an NPCA duration.
I’m not sure whether your proposal would help.
 
BR,
 
Xiangxin Gu
Institute of Communication Technology
 
From: "문주성 (Juseong Moon)" <theonebird81@xxxxxxxxx> 
Sent: Tuesday, August 26, 2025 8:11 AM
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGBN] Regarding the SP text (Doc. 25/0645r1)
 
Hi all,
 
Today, I presented submission 25/0645r1(https://mentor.ieee.org/802.11/dcn/25/11-25-0645-01-00bn-r-twt-operation-with-npca.pptx) in the TGbn MAC teleconference session, and I decided to defer the straw poll for now.
I plan to run the SP during the September F2F meeting session in Waikoloa.
I would like to hear your thoughts or questions regarding the SP text included in the submission.
The SP text is shown below.
 
 
SP #1: Do you support to add the following text to the 11bn SFD?
 
3.4 NPCA operation
Before starting transmission of any PPDU in the TXOP obtained on the NPCA primary channel, an NPCA STA should complete its frame exchange prior to the start of the R-TWT SP, as defined in subclause 35.8.4.1(TXOP and backoff procedure rules for R-TWT SPs). If there is not enough time to complete its frame exchange prior to the start of the R-TWT SP, then the NPCA STA should defer transmission.
 
 
If you have any questions or comments on the SP text or the submission, please feel free to let me know.
 
Thank you.
Juseong Moon.

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