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Re: [STDS-802-11-TGBE] [PHY] SU SIG contents, 11-20/285

Thanks Wook Bong for this harmonization attempt.  I overall agree with the ideas in your straw-polls.  I have two minor comments which you might want to consider:

 

  1. To aid clarity, maybe you can change the TBD bullet in SP1 to: “Whether BW and puncturing info bits in U-SIG are carried as a combined or a separate field is TBD”
  2. In SP2, since we have not decided if there will be an SU PPDU (which is separate from MU PPDU), maybe you can word it as follows: “Do you agree to have STA-ID related information in an EHT PPDU sent to a single user?”

 

Regards,

Sameer

 

 

From: Wook Bong Lee <wookbong.lee@xxxxxxxxxxx>
Sent: Thursday, March 19, 2020 4:33 PM
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGBE] [PHY] SU SIG contents, 11-20/285

 

CAUTION: This email originated from outside of the organization.

Hi PHY fans,

 

This is an email to discuss straw poll for SU SIG contents in 11-20/285.

During 3/18 conference call, there was a request to discuss straw poll using e-mail reflector.

If you are not interested in this topic, sorry for this e-mail.

 

    • 285r1 SU PPDU SIG Contents Consideration (Wook Bong Lee)

First, Eunsung asked to defer the straw poll since he has some more puncturing pattern to propose, and it may impact the signaling design.

Eunsung’s contribution was discussed 3/18 call, and there was no agreement to add more puncturing pattern.

Second, after I review following two contributions,

    • 380r0 U-SIG Structure and Preamble Processing (Sameer Vermani)
    • 439r0 Efficient EHT Preamble Design (Jianhan Liu)

I agreed with some of ideas in those contributions, i.e. allowing a STA to know exact what is puncturing pattern for the 80MHz.

I believe this is useful not only for a different STA to camp different 80MHz (note this feature itself needs more discussion in MAC Adhoc or in Joint group) but also for a non-associated STA to decode FILS or Unsolicited Probe Response frame in MU PPDU which is supported in 11ax for 6GHz operation.

So, I modified SP accordingly.

 

In addition to that, we want to propose to include STA-ID related information in SU PPDU as well to aid non-STR STA for MLD operation. Please refer 11-20/285 or 11-19/1405r7, “Multi-link Channel Access Discussion” for more discussion.

 

These are proposed SPs in 11-20/285r2. Uploaded revision 2 in the server.

SP#1

  • Do you support that U-SIG in each 80MHz shall carry puncturing channel info for at-least the specific 80MHz where it is transmitted?
    • Note1: Each STA needs to decode U-SIG in only one 80MHz segment
    • Note2: Within each 80MHz segment, U-SIG is duplicated in every non-punctured 20MHz
    • BW/Puncturing info can be different for different 80MHz
    • TBD: separate BW and puncturing info bits in U-SIG

SP#2

  • Do you agree to have STA-ID related information for SU PPDU in EHT-SIG?

 

If you have any question or any suggested modification, please let us know.

 

Best regards,

Wook Bong Lee

 

 

 

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