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Re: [STDS-802-11-TGBN] CC50/CR for P-EDCA

 

Hi Dimitry,

 

Thank you for taking care of my comments.

I got your point on the first one!

And I’m fine with your proposed change.

 

Best regards,

tomo

 

From: Akhmetov, Dmitry <Dmitry.Akhmetov@xxxxxxxxx>
Sent: Saturday, April 19, 2025 3:18 AM
To: adachi tomoko(足立 朋子 □ＩＲＣ○ＷＳ開) <tomo.adachi@xxxxxxxxxxxxx>; STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: RE: CC50/CR for P-EDCA

 

Hi Tomo,

 

Thank you for your comments

 

On the comment in the first bullet: The proposal use CTS frame (DS-CTS) to start protected short contention. It may happen that DS-CTS is transmitted by more than one STA at a time, for example: STA1 and STA2 experienced a failure and now can send DS-CTS. They both detected medium IDLE at the same -> they will send DS-CTS at the same time to start P-EDCA contention. The DS-CTS should establish protection for the P-EDCA contention-> for that DS-CTS need to be received by other STAs -> for that reason ideally DS-CTS has to carry same information in the payload to be properly decode. Available options are: AP’s address, broadcast address or some _special_ value

 

On the second bullet: accepted

 

On the third bullet:

              How about that:

Table 31-7 Default P-EDCA parameters set

AC

CWmin

CWmax

AIFSN

P-EDCA contention duration

AC_VO

7

7

2

97 µs

Note— The NAV set by the Duration field of the DS-CTS frame protects the medium for the maximum P-EDCA contention duration: aSifsTime + (AIFSN + CWMax) * aSlotTime. Hence, the default values relate as follows: 97 µs = 16 µs + 2*9 µs + 7*9 µs

 

 

 

 

 

 

 

 

From: tomo.adachi@xxxxxxxxxxxxx <tomo.adachi@xxxxxxxxxxxxx>
Sent: Tuesday, April 15, 2025 6:53 PM
To: Akhmetov, Dmitry <Dmitry.Akhmetov@xxxxxxxxx>; STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: RE: CC50/CR for P-EDCA

 

 

Hello Dmitry,

 

Thanks for this.

I have some minor comments:

l  “The  value of RA field shall be set to the TBD value  the MAC address of the AP with which STA is associated and …” I was thinking that the CTS used to start the P-EDCA contention is a CTS-to-self, not introducing a new concept. As the change here seems to just try not to limit to an AP sending the DS-CTS, I think setting the RA field to the value of the MAC address of the transmitting STA is fine (same as the general CTS-to-self).

l  “… the Duration field shall be set to the value of the P-EDCA contention duration from the Table 37-1.” à “… the Duration field shall be set to the P-EDCA contention duration in Table 37-1.”?

l  Maybe not related to any of the comments, but in the note of Table 37-1, there are pEdcaAifs and pEdcaCwMax, which are first to appear and different from the parameters described in the table body. I kind of understand why you did so, but why not define the shortened name parameters first, add description what those are (CWmin/CWmax/AIFSN used for P-EDCA), and then use those shortened ones in the note?

 

Best regards,

tomo

 

From: Akhmetov, Dmitry <Dmitry.Akhmetov@xxxxxxxxx>
Sent: Wednesday, April 16, 2025 4:44 AM
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBN] CC50/CR for P-EDCA

 

Hello everyone,

 

I’ve uploaded r3 of the document that incorporates comments received during Monday MAC call.

https://mentor.ieee.org/802.11/dcn/25/11-25-0627-03-00bn-cc50-cr-for-p-edca.docx

 

Please let me know if you have any questions or comments preferable by EOD of Thursday April 17th

 

Dmitry

 

 

From: Akhmetov, Dmitry
Sent: Friday, April 11, 2025 7:06 PM
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: RE: CC50/CR for P-EDCA

 

Hello everyone,

 

I’ve uploaded r1 version of CC50 resolution document for P-EDCA clause

Please review and let me know if you any comments.

 

The document is scheduled for presentation in Monday April 14th MAC call

 

Dmitry

 

 

From: Akhmetov, Dmitry
Sent: Monday, April 7, 2025 4:40 PM
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: CC50/CR for P-EDCA

 

Dear all,

 

I uploaded two documents:

11-24-2007r6  - Latest revision of PDT for  P-EDCA

https://mentor.ieee.org/802.11/dcn/24/11-24-2007-06-00bn-pdt-mac-p-edca.docx

 

And

 

11-25-0627r0 – CC50 CR for the P-EDCA clause.

That document uses 2007r6 as a baseline.

https://mentor.ieee.org/802.11/dcn/25/11-25-0627-00-00bn-cc50-cr-for-p-edca.docx

 

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

 

Thanks,

Dmitry

 

 

 

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