Please find my replies below.
Best Regards,
Liwen
From: Muhammad Kumail Haider <kumail.ieee@xxxxxxxxx>
Sent: Thursday, March 10, 2022 3:27 PM
To: Liwen Chu <liwen.chu@xxxxxxx>
Cc: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: Re: [EXT] [STDS-802-11-TGBE] Requesting feedback on 21/1224r12 SP (p2p CIDs)
Caution: EXT Email
Thanks Liwen, please see my responses inline.
The Broadcast TWT Recommendation is set to 0, 4 or 5 if transmitted
by a restricted TWT scheduled STA, and otherwise is reserved if transmitted by a TWT scheduled STA.
I have the following comment:
It is not clear why 0 is allowed for Broadcast TWT Recommendation for r-TWT.
r-TWT scheduled STAs may also establish membership in bTWT schedules (which are not rTWT schedules). So in these cases r-TWT scheduled STAs need to specify the value 0.
My understanding (checked with Alfred) is that TWT scheduled STAs set this subfield to 0 for bTWT schedules because this subfield is reserved as per baseline. So we keep the same for r-TWT scheduled STAs (which
are also TWT scheduled STAs) signaling for bTWT schedules, whereas they may set it to 4/5 for rTWT schedules. If you have suggestions for improvement please let me know.
[Liwen] “otherwise is reserved
if transmitted by a TWT scheduled STA” already cover the 0 case since r-TWT STA is TWT scheduled STA. If a r-TWT scheduled STA can set Broadcast
TWT Recommendation to 4 or 5 besides reserved, the normative behaviour about whether a STA can send TWT request with Broadcast TWT Recommendation equal to 5 (or 4) to a r-TWT schedule announced by an AP whose Broadcast TWT Recommendation equal to 4 (or 5)
respectively.
For the last paragraph in the document, I have the following comment:
An AP announces the r-TWT with Broadcast TWT Recommendation 5 in Beacon frame needs to have Triggered
TXOP Sharing Mode 2 Support equal to 1. The if condition in the last paragraph for AP is not needed.
Thanks for pointing out, I will revise the draft based on your suggestion.
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