Re: [STDS-802-11-TGBE] PDT-MAC-MLO BA sharing and extension of SN space

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Hi Liwen,

Attached please find my comments to this PDT.

Best,

Jason Yuchen Guo

发件人: Tomo Adachi [mailto:tomo.adachi@xxxxxxxxxxxxx]
发送时间: 2020年9月3日 9:29
收件人: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
主题: Re: [STDS-802-11-TGBE] PDT-MAC-MLO BA sharing and extension of SN space

Hi Liwen,

Please allow my late feedback.

Not sure if someone pointed out but here are my findings/thoughts:

- 9.3.1.8.2, Table 9-30a. Shouldn’t we add that 64 and 128 octets are only for EHT STAs, say in the NOTE? I think the change in 10.2.5.2 supports this restriction. Or should we confirm this on motion?

- 9.3.1.8.7, Table 9-30c. Same comment as above.

- 10.25.2, 1^st sentence in 1^st para. MLD countable? Then “… two MLDs.”

- 33. TGbe editor: Add new a subclause 33.x. (EHT acknowledgment procedure) under clause 33x as follows: à TGbe editor: Add new a subclause 33.x. (EHT acknowledgment procedure) under clause 33x as follows:

- 33.x.1. “Support for BlockAck Bitmap field lengths of 32, 64, 128, 256, 512 and 1024” à “Support for BlockAck Bitmap field lengths of ~~32, 64, 128, 256,~~ 512 and 1024” (Don’t need to cover those that were extended in HE.)

- 33.x.1, 2^nd para. “An EHT AP shall not transmit a Multi-STA BA with at least one BA Bitmap lengths of either 512 or 1024 bits as a response to an HE TB PPDU generated by at least one HE STA.” I think the intention was to not use those lengths when there is at least one HE STA participating in the transmission of an HE TB PPDU. And I think an EHT STA will be also an HE STA. It may be clearer if it is “An EHT AP shall not transmit a Multi-STA BA that contains at least one BA Bitmap lengths of either 512 or 1024 bits as a response to an HE TB PPDU where at least one non-EHT HE STA associated for the transmission.”

- 33.x.1, last para. “An initiating MLD shall maintain one one transmission window for …” Double “one”s.

- BTW, are such bitmap lengths only allowed between MLDs or allowed also between STAs in a single link? My current understanding is that there is no limitation. I just want to check this.

- Are the additional bitmap lengths mandatory for EHT STAs? I am not sure by the text in Motion 112, #SP7, [15] and [148].

Best regards,

tomo

From: Liwen Chu <liwen.chu@xxxxxxx>
Sent: Friday, August 28, 2020 3:54 AM
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGBE] PDT-MAC-MLO BA sharing and extension of SN space

Hello TTT members for MLO BA sharing and extension of SN space,

Here is an initial draft text for MLO BA sharing and extension of SN space:

https://mentor.ieee.org/802.11/dcn/20/11-20-1336-00-00be-11be-spec-text-for-mlo-ba-share-and-extension-of-sn-space.docx

If you have comments, please let me know.

Best Regards,

Liwen

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