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RE: Clarification Regarding Document 1533r0 presented in TGbf



Dear Rajat.

 

Thanks for excellent questions. I try to answer as much as I can below.

 

Stay safe !!

 

Best regards,

Sang.

 

From: Rajat PUSHKARNA [mailto:rajat.pushkarna@xxxxxxxxxxxxxxxx]
Sent: Tuesday, September 29, 2020 9:18 PM
To: SANG GOOK KIM/Team Leader/LGEUS NA Research & Standards(sanggook.kim@xxxxxxx)
Cc: Rojan Chitrakar; stds-802-11-tgbf@xxxxxxxxxxxxxxxxx
Subject: Clarification Regarding Document 1533r0 presented in TGbf

 

Dear Sang Kim,

 

Thanks for presenting a useful contribution for collaborative sensing. I want to clarify the following questions based on your presentation in TGbf:

 

1) Can STAs belonging to different BSSs be in the same group, or is a group restricted to a single BSS? (Slide 11)

 

[SGK] At this time, we’d better not to limit the group members from the same BSS. By doing so, we can get at least the following benefit: Enhanced coverage with sufficient number of STAs in the group. However, as you expect, there is no free lunch, we may need to consider overhead increase, e.g., one between APs. In 11be, multi-AP transmission is considered in R2 in which control signaling between APs may be allowed. That may be the similar overhead that I am envisioning.

 

2) How do you envision the group to be setup, i.e. what kind of signaling are you proposing? Will it be standardized in 11bf? (Slide 10)

 

[SGK] As I cribbed in the contribution, I consider two ways of forming the group: Static and/or Dynamic. For static grouping, basic assumption is that AP knows the STA capability in terms of sensing and possibly their locations. Based on those information, AP predetermines the group and information on group, e.g., group ID, its members, etc., will be delivered using existing frame(s) such as Beacon, Trigger frame, etc. For dynamic grouping, AP or other STA guided by AP can announce its intention to form a group. This intention may be delivered using Trigger frame. The STA(s) that is willing to join the group can respond to it. Of course, this will require standard works. The details will be further elaborated.

 

3) What STA will perform the signalling AP, non-AP or is it based on use-case for collaborative sensing?

 

[SGK] When AP is included in the group, then I think AP will be a signalling (management and control) AP. When AP is not included in the group, there may be a group owner (initiator). In this case, management signalling will be delivered by AP to group initiator and control signalling may be executed by group owner. Likewise, further detail will be elaborated.

 

Best Regards,

Rajat Pushkarna.

(R&D Engineer)

Panasonic R&D Centre, Singapore.

 

 

Best Regards,

Rajat Pushkarna.

(R&D Engineer)

Panasonic R&D Centre, Singapore.

 


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