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Re: [STDS-802-11-TGBF] Follow-up on Local Reporting for 11bf ..

Dear Rajat,

Thanks for the question. My answers are inline.

On Mon, Dec 6, 2021 at 7:07 PM Rajat PUSHKARNA <rajat.pushkarna@xxxxxxxxxxxxxxxx> wrote:

Hi Oscar,

 

I share the same concern as Mengshi. We already have a motion stating that “the measurement results shall be reported to the initiator.”

 

In which case, if the sensing receiver is also an initiator this works fine. But for the case when sensing receiver is not an initiator, we need to report back the measurement to the initiator.

Yes, you are right. According to our current SFD, the measurements will be reported back to the initiator (which I called "Nonlocal Reporting"). 

In my contributions, I am indeed introducing this thing called "Local Reporting". 
- As you correctly point out, this is NOT NEW and is already supported in the SFD for the case of the sensing receiver being an initiator ("Case 1"). (Please note that, as any STA can be a sensing initiator, Local Reporting is an inherent capability of any SFD-compliant STA in order to support the case of the sensing receiver being an initiator.)
- However, Local Reporting is not supported in the current SFD for the case of the sensing receiver being NOT an initiator ("Case 2") - which is why I submitted my contributions.

As explained in my reply to Mengshi's email, there are several combinations for Nonlocal Reporting and Local Reporting.
- Combo 1 - Nonlocal Reporting only. This is supported by our current SFD for Case 2, but will not happen for Case 1.
- Combo 2 - Local Reporting only. This is supported by our current SFD for Case 1, but not supported for Case 2.
- Combo 3 - both Nonlocal and Local Reporting. This is supported by current SFD at the initiator for hybrid case of Case 1 and Case 2 (with some receivers being the initiator, and some not). For any receiver not being the initiator, Nonlocal Reporting will happen to transmit CSI to the initiator. For any receiver being the initiator, Local Reporting would happen. However, our current SFD does NOT support Local Reporting at sensing responders (not initiator) who are receivers.

So I am proposing to support Local Reporting also at sensing responders (not initiator) who are receivers.

Thanks,
Oscar




 

 

Can you help me to clarify your thoughts?

 

Thanks.

 

Best Regards,

Rajat Pushkarna.

(R&D Engineer)

Panasonic R&D Centre, Singapore.

 

 

 

From: humengshi <0000179fd8c5ace5-dmarc-request@xxxxxxxxxxxxxxxxx>
Sent: Tuesday, 7 December 2021 10:52 am
To: STDS-802-11-TGBF@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGBF] 答复: Follow-up on Local Reporting for 11bf ..

 

Hi Oscar,

 

Thanks for bring these contributions. I have one question:

Q1: In Slide 7 in 1909, you give two examples on the use of local reporting. Regarding the second one, when the AP is the initiator, you are saying that the measurements can be done locally and no transmission of measurement results over the air. I’m a little bit confused about this. Since the AP is the initiator, the AP shall know the final results. Here you mention that no results are transmitted. How does the AP get the sensing results?

 

Best regards,

Mengshi Hu

 

发件人: stds-802-11-tgbf@xxxxxxxxxxxxxxxxx <stds-802-11-tgbf@xxxxxxxxxxxxxxxxx> 代表 Oscar Au
发送时间: 2021年12月7日 9:34
收件人: STDS-802-11-TGBF@xxxxxxxxxxxxxxxxx; Hanxiao (Tony, WT Lab) <tony.hanxiao@xxxxxxxxxx>
抄送: Oscar Au <oscar.au@xxxxxxxxxxxxxxxxxxxx>
主题: Follow-up on Local Reporting for 11bf ..

 

Dear all,

 

Thank you for the many valuable comments on the topic of Local Reporting for 11bf (1904, 1905, 1906, 1908, 1909). I understand that many colleagues have questions on Local Reporting. With this email thread, I would like to invite you to share comments and thoughts on Local Reporting.

 

To summarize what "Local Reporting" is:
1. Local reporting is to make sensing measurement results (e.g. CSI) locally available in the sensing receiver to upper layers (e.g. application layer) in the  sensing receiver through some MLME primitive, with no requirement of transmission of the sensing measurement results.

 

2. Use cases. In 1909, two "recipes" (examples) are shown on the use of local reporting to achieve central-computing and distributed-computing WLAN sensing solutions. What do you think about those two recipes? What are your concerns?

 

3. Further details. There are some comments that more details or more understanding of local reporting is needed. Please kindly share what details we should try to investigate/explore. What are your concerns?

 

Thanks,

Oscar

 

 

 

 

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