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Re: [STDS-802-11-TGBF] TGbf meeting on February 14, 15, 17

Hi Rui

 

Thank you for the great effort for clarification about TCIR.

 

Regarding the SR/Motion text proposed in your email, I don’t see any fundamental difference between this and the two failed motions (Motion 31 and Motion 49).

 

Please allow me to ask the questions again using the current text

1)      Is the action in the first sub-bullet (Generating the CIR (time domain) from frequency domain CSI (e.g. by IFFT) ) implementation dependent? Does it require to be specified?

2)      Is the selection of the taps in the second sub-bullet (Reporting the set of taps (complex samples) around the tap with the largest magnitude of the entire CIR) implementation dependent? What is the physical meaning of those taps? What is the relationship among those taps in time or distance?  Again, if these are not specified, the receiver of the feedback can’t interpret them.

3)      Regarding the third sub-bullet (The size of the selected set is corresponding to the range of interest), if the tap with the largest magnitude does not corresponding to the LOS, can you determine the range?

 

Regarding the last question, since you mentioned 11ay, the snapshot below is from one of Assaf’s contributions which mentioned the issue from lack of LOS information (first two sentences). Please keep in mind that discussion then was for beamforming training. It had nothing to do with ranging.  

 

 

 

Best regards,

Ray

 

From: durui (D) <000017788cb650b9-dmarc-request@xxxxxxxxxxxxxxxxx>
Sent: Wednesday, February 16, 2022 9:12 PM
To: STDS-802-11-TGBF@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGBF] 答复: TGbf meeting on February 14, 15, 17

 

Hi  Tony,

 

I receive some valuable comments and questions for TCIR from the group members in last month, really appreciate that.

With the very good discussion, I’ve converged and confirmed the idea of TCIR with some group members. And still waiting for the potential further comments from other group members.

Since I haven’t received any further comments or questions until now, I would like to request the SP and motion again about the TCIR.

 

The SP text

  • Do you support to add the following to the TGbf SFD:
  • Truncated Channel Impulse Response(TCIR) described as follows should be considered as one optional type of the sensing measurement results for sub-7GHz sensing.
    • Generating the CIR (time domain) from frequency domain CSI (e.g. by IFFT).  
    • Reporting the set of taps (complex samples) around the tap with the largest magnitude of the entire CIR .
    • The size of the selected set is corresponding to the range of interest.   
    • Note: the calculation of the size of the reporting set is TBD.

 

 

The Motion text

  • Move to add the following to the TGbf SFD:
  • Truncated Channel Impulse Response(TCIR) described as follows should be considered as one optional type of the sensing measurement results for sub-7GHz sensing.
    • Generating the CIR (time domain) from frequency domain CSI (e.g. by IFFT).
    • Reporting the set of taps (complex samples) around the tap with the largest magnitude of the entire CIR .
    • The size of the selected set is corresponding to the range of interest.
    • Note: the calculation of the size of the reporting set is TBD.

 

The first sub-bullet modified to state that IFFT is one recommending method, other potential method also can be adopted to generating the CIR.

The second sub-bullet is the statement of how to select the reference point (this has been discussed clearly in the email thread and this is a common method that is already adopted in 11ay and under discussion in 802.15.4ab).

The third sub-bullet remain the same meaning of the previously one.

 

And I am asking the group members again, please let me know if you have any further comments, questions or suggestions.

Many thanks.

 

Best wishes,

Rui Du

 

发件人: Hanxiao (Tony, WT Lab) [mailto:0000177ab8f731c4-dmarc-request@xxxxxxxxxxxxxxxxx]
发送时间: 2022年2月11日 17:05
收件人: STDS-802-11-TGBF@xxxxxxxxxxxxxxxxx
主题: [STDS-802-11-TGBF] TGbf meeting on February 14, 15, 17

 

Dear all,

This is a reminder and call for submissions for the upcoming meeting on:

•    February   14  (Monday),   9am - 11:00am ET          

•    February   15   (Tuesday),  9am - 11:00am ET

•     February   17  (Thursday), 10pm - 12:00am ET        

 

Please note:

  1. Please send the agenda request at least 24 hours prior to the call, following the format below:

•     DCN, Title, Author (affiliation), Time duration

  1. I will cancel the call if there is no request received 24 hours prior to a call.
  2. Please upload your submissions (revision 0) on mentor 24 hours prior to the meeting so that members would have a chance to review those submissions offline. Otherwise,
    1. If there is not enough time during the meeting, the presentation will be delayed to the next meeting.
    2. If there is enough time during the meeting, the presentation will be moved to the end of the queue and be presented in the end. However, any related SP should be delayed to the next meeting.
  3. Please send the motion request (with related DCN, and SP result) around 10+5 days before the meeting (for teleconference, not for Plenary or Interim meeting), so that the TG chair could send the 10 day advance notice to the 802.11 reflector, after getting the approval from the WG chair.
  4. Dial-in information:

 

February 14  (Monday)

Join the Webex meeting here: https://ieeesa.webex.com/ieeesa/j.php?MTID=m86e726b2f437f5a06f7c8dbcad778a33

Meeting number: 234 917 01979

Meeting password: wireless (94735377 from phones and video systems)

Join by phone: Tap to call in from a mobile device (attendees only) +1-408-418-9388 USA Toll
Global call-in numbers

Access code: 234 917 01979

Join from a video system or application Dial 23491701979@xxxxxxxxxxxxxxxx You can also dial 173.243.2.68 and enter your meeting number.

Join using Microsoft Lync or Microsoft Skype for Business Dial 23491701979.ieeesa@xxxxxxxxxxxxxx

Need help? Go to http://help.webex.com

 

February 15   (Tuesday)
Join the Webex meeting here: https://ieeesa.webex.com/ieeesa/j.php?MTID=m929b0619afb297bde19bd996631b5f16

Meeting number: 234 659 57065

Meeting password: wireless (94735377 from phones and video systems)

Join by phone: Tap to call in from a mobile device (attendees only) +1-408-418-9388 USA Toll
Global call-in numbers

Access code: 234 659 57065

Join from a video system or application Dial 23465957065@xxxxxxxxxxxxxxxx You can also dial 173.243.2.68 and enter your meeting number.

Join using Microsoft Lync or Microsoft Skype for Business Dial 23465957065.ieeesa@xxxxxxxxxxxxxx

Need help? Go to http://help.webex.com

 

 

February 17 (Thursday)

Join the Webex meeting here: https://ieeesa.webex.com/ieeesa/j.php?MTID=md170f69e272dfa7f7939933839e8a4bf

Meeting number: 234 939 70716

Meeting password: wireless (94735377 from phones and video systems)

Join by phone: Tap to call in from a mobile device (attendees only) +1-408-418-9388 USA Toll
Global call-in numbers

Access code: 234 939 70716

Join from a video system or application Dial 23493970716@xxxxxxxxxxxxxxxx You can also dial 173.243.2.68 and enter your meeting number.

Join using Microsoft Lync or Microsoft Skype for Business Dial 23493970716.ieeesa@xxxxxxxxxxxxxx

Need help? Go to http://help.webex.com

 

Best Regards : )

Tony Xiao Han

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