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Alfred and all, I uploaded r3 of CR document 26/0031 based on comments I received. I have two CIDs in the document. One of them is related
to group addressed BU delivery for PUO STAs, which triggered many comments during the first presentation.
I started a discussion thread on reflector and received few responses. Due to our tight schedule, I like to request agenda time for the updated document and hope we could make progress. https://mentor.ieee.org/802.11/dcn/26/11-26-0031-03-00bn-lb291-cr-for-miscellaneous-cids.docx Best regards, Hanqing From: Hanqing Lou <00001af7734dda91-dmarc-request@xxxxxxxxxxxxxxxxx>
Dear all, I just presented CR document with group addressed BU delivery for PUO STAs:
https://mentor.ieee.org/802.11/dcn/26/11-26-0031-02-00bn-lb291-cr-for-miscellaneous-cids.docx I received several comments and questions during the presentation and would like to open a discussion. Based on our discussion, I intend to modify the CR document accordingly. **Comment 1: No changes in AP’s behavior.** I would like to highlight a key distinction between PUO and traditional power save or P2P operation. With PUO,
there is no guarantee that the DTIM beacon will not overlap with a STA's PUO unavailable time. The same issue applies to DUO STAs as well. While this is not a straightforward problem to resolve, leaving it unaddressed means PUO/DUO STAs may occasionally
miss DTIM beacons and the delivery of group addressed BUs. **Comment 2: The AP shall buffer group addressed BUs for PUO STAs.** I generally agree with this statement; however, there may be corner cases worth considering. For example, if there are no other power save STAs in the BSS — only a PUO STA — and the AP knows that the PUO STA's
unavailable time overlaps with the next DTIM beacon, should the AP still buffer the group addressed BU? **Comment 3: Buffered frames may be time sensitive.** I agree with this comment — timely delivery of buffered frames is important. Therefore, we have added a recommendation for PUO STAs to listen for the DTIM beacon and the subsequent group addressed frame delivery.
"PUO non-AP STAs should follow the rules defined in 11.2.3.7 (Receive operation for STAs in PS mode) for DTIM beacons and group addressed MPDUs delivery. (#5099)" Please note that all changes in my CR are recommendations, intended to leave APs and non-AP STAs some flexibility in handling corner cases. Best regards, Hanqing To unsubscribe from the STDS-802-11-TGBN list, click the following link:
https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-TGBN&A=1 To unsubscribe from the STDS-802-11-TGBN list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-TGBN&A=1 |