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Re: [STDS-802-11-TGAX] Editorial comments



Thanks Srini, they are yours.

 

-Robert

 

From: Srinivas Kandala [mailto:srini.k1@xxxxxxxxxxx]
Sent: Wednesday, July 03, 2019 1:50 PM
To: Stacey, Robert <robert.stacey@xxxxxxxxx>; Osama AboulMagd <Osama.AboulMagd@xxxxxxxxxx>
Subject: RE: Editorial comments

 

Robert/Osama,

 

I can volunteer for this if you are still looking.

 

Thanks.

Regards,

srini

 

From: *** 802.11 TGax - HEW - High Efficiency WLAN *** [mailto:STDS-802-11-TGAX@xxxxxxxx] On Behalf Of Stacey, Robert
Sent: Wednesday, July 3, 2019 12:02 PM
To: STDS-802-11-TGAX@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGAX] Editorial comments

 

I have two editorial comments that need resolution. I’m looking for volunteers.

 

#20268:

Comment: The draft states that it is an amendment to IEEE P802.11REVmdD2.0, however many edits and text additions appear to be made to older version of the 802.11 draft and are therefore unintended or undocumented changes to the base draft.  Some specific examples of this issue are provided in other comments provided by this commenter.

 

This involves reviewing all the quoted baseline text against REVmd D2.2 and making changes where the quote differs from the baseline. I am aware of differences in 10.2.5 and 10.3.2.4.

 

#21011

Comment: If  the  TXVECTOR  parameter  TRIGGER_METHOD  is  TRS  then  the  parameter  LDPC_EXTRA_SYMBOL is 1 and initial parameters set to NSYM,init = NSYM, and ainit = a - 1, where a is the pre-FEC padding factor set to 4 and NSYM is set to FVAL + 1, where FVAL is the value of the UL Data Symbols subfield of the TRS Control subfield." is clunky and does not match the previous para.  Also the claims on LDPC_EXTRA_SYMBOL and pre-FEC padding factor are at best duplication.

 

The real issue here is that the PHY should not deal with frame sequencing. Everything needed to format a PPDU should be present in the TXVECTOR. In this case, LDPC_EXTRA_SYMBOL is set based on Trigger frame content or TRS Control subfield content as described in 26.5.2.3.3 and 26.5.2.3.4, respectively. However, it seems that the TXVECTOR is missing the "Pre-FEC Padding Factor" for an HE TB PPDU (something like the LDPC_EXTRA_SYMBOL -- present only for HE TB PPDU).

 

Somebody needs to go through this part of the PHY spec and change it so that it references TXVECTOR parameters rather than parameters in the Trigger frame. May involve adding TXVECTOR parameters if the current set is incomplete.

 

-Robert


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