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Re: [STDS-802-11-TGBE] Comments on r7 // Re:[STDS-802-11-TGBE] PDT-MAC-MLO Enhanced Multi-link Single-radio Operation

Hello Liuming,

Thanks for your comments. Please see my response below.

Best regards,
Minyoung

On Mon, Aug 31, 2020 at 9:07 AM <lu.liuming@xxxxxxxxxx> wrote:

Hi Minyoung,


Thanks for the preparation. I have the following comments on the PDT r7 of Enhanced Multi-link Single-radio Operation.

(1)

A single-link/radio (name is TBD) non-AP MLD is a non-AP MLD that supports operation on more than one link but receives or transmits frames only on one link at a time

Comment-1: This definition seems to be different from the concept of EMLSR mode, which allows to listen (i.e. receive) on more than one enable link (EMLSR links). Can the definition be clarified?

[Response1] The definition in  subclause 3.2 (Denitions specific to IEEE 802.11)   is for a single-link/radio non-AP MLD, and not related to the EMLSR mode.  

(2)

A non-AP MLD may operate in the enhanced multi-link single-radio (EMLSR) mode on a specified set of the enabled links.

Comment-2:Whether to add the AP MLD it associates as follows ?

A non-AP MLD may operate in the enhanced multi-link single-radio (EMLSR) mode on a specified set of its enabled links with the associated AP MLD.

[Response2] I'll change the sentence in r8 as follows: "... the enabled links between the non-AP MLD and its associated AP MLD." 

(3)

The specified set of the enabled links in which the EMLSR mode is applied are called EMLSR links.

Comment-3: Whether not to exclude the scenario that there exist two sets of EMLSR links?  Whether to be modiefied as follows?

The specified set of the enabled links in which the EMLSR mode is applied are called EMLSR links for the same operation. A non-AP MLD that supports EMLSR mode may have one or more sets of EMLSR links.

[Response3] I don't see a good reason to have more than one set of links for this mode of operation.  

(4)

An MLD with dot11EMLSROptionImplemented equal to true shall set the EMLSR mode subfield of the TBD Capabilities element, which is an MLD level capabilities element, to 1; otherwise, the MLD shall set the EMLSR mode subfield to 0.

Comment-4: Besides the MLD level capabilities element, the affiliated STAs corresponding to the links may have the capability of EMLSR mode for the link-level capability , which allows them to operate or not to operate on EMLSR mode.

[Response4] There could be such capabilities but the task group haven't had any technical discussions on the details and consensus so for D0.1 draft text we would just have this level of details. 

(5)

Comment-5: The current draft text specifies the transceiving behaviour initiated by AP MLD. Should the transceiving behaviour initiated by non-AP MLD be specified?

[Response5] The case is same with the current baseline behavior so I don't see a need for it.



Best Regards,

Liuming Lu


原始邮件
发件人：MinyoungPark <mpark.ieee@xxxxxxxxx>
日 期 ：2020年08月29日 02:17
主 题 ：Re: [STDS-802-11-TGBE] PDT-MAC-MLO Enhanced Multi-link Single-radio Operation
Hello TTT members for Enhanced Multi-link Single-radio Operation,

I've resolved all the comments and uploaded r6 for the draft text for enhanced multi-link single-radio operation:

Please review and let me know if you have any further comments. I'm planning to run a SP sometime next week.

Thanks,
Minyoung

On Mon, Aug 24, 2020 at 9:15 PM Minyoung Park <mpark.ieee@xxxxxxxxx> wrote:
Hello TTT members for Enhanced Multi-link Single-radio Operation,

Here is an initial draft text for enhanced multi-link single-radio operation:
https://mentor.ieee.org/802.11/dcn/20/11-20-1291-00-00be-pdt-mac-mlo-enhanced-multi-link-single-radio-operation.docx

Please review and let me know if you have any comments.

Thanks,
Minyoung

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