Re: [STDS-802-11-TGBE] PDT-PHY- Receive specification: General and recei

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Hi Aiguo,

Thanks for your comments/questions.

Section 34.3.18.3 Adjacent channel rejection is based on 11ax specification.

It seems your questions require technical discussion.

If you have proposed changes, it is better to submit technical contribution so that we can discuss and make change accordingly.

Following is my opinion.

Question #1. For me, W is PPDU BW.

But I don’t think we are considering mixed (adjacent and non-adjacent) interference scenario as you drew in below.

Question #2. If interference is not aligned (in OFDM symbol), then different MCS interferences source maybe doesn’t matter.

Best regards,

Wook Bong Lee

From: Aiguo Yan [mailto:aiguo.yan@xxxxxxxx]
Sent: Friday, September 11, 2020 5:54 PM
To: Wook Bong Lee <wookbong.lee@xxxxxxxxxxx>; STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: RE: [STDS-802-11-TGBE] PDT-PHY- Receive specification: General and receiver minimum input sensitivity and channel rejection

Wookbong and other TTTs

Question #1:

I checked all documents/specs (old and new). It seems “W MHz” could have room for alternate interpretation.

Adjacent channel rejection for W MHz (where W is 20, 40, 80, 160 or 320) shall be measured by setting the desired signal’s strength 3 dB above the rate-dependent sensitivity specified in Table xx-y1 (Receiver minimum input level sensitivity) and raising the power of the interfering signal of W MHz bandwidth until 10% PER is caused for a PSDU length of 2048 octets for BPSK modulation with DCM or 4096 octets for all other modulations. The difference in power between the signals in the interfering channel and the desired channel is the corresponding adjacent channel rejection. The center frequency of the adjacent channel shall be placed W MHz away from the center frequency of the desired signal.

One interpretation is that “W MHz” is the PPDU BW, not the STA capability (use only continuous BW as an example at this moment).

Therefore, following test case is valid for a 320MHz capable STA with reception of a 80MHz PPDU

Another interpretation is just the opposite, i.e., “W MHz” is the STA capability. So interference scenario of above is not valid.

Question #2:

All 802.11 specs also didn’t say explicitly what MCS should be used for interference signal. An easy choice would be using the same MCS as the wanted signal does.

I don’t know whether there already is an unspoken agreement from the past. Even if yes, it is still better to make this kind of agreement explicit.

Thanks.

Aiguo

From: Wook Bong Lee <wookbong.lee@xxxxxxxxxxx>
Sent: Thursday, September 10, 2020 9:40 AM
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBE] PDT-PHY- Receive specification: General and receiver minimum input sensitivity and channel rejection

Hi Edward,

Thanks for comment.

As I mentioned in the abstract of the contribution, I didn’t include 80+80/160+160 MHz yet as there is some related discussion in PHY adhoc.

At this moment, maybe I can put those in PDTs with TBD.

I will update all PDTs and upload it soon.

Best regards,

Wook Bong Lee

From: Edward Au [mailto:edward.ks.au@xxxxxxxxx]
Sent: Thursday, September 10, 2020 8:58 AM
To: Wook Bong Lee <wookbong.lee@xxxxxxxxxxx>
Cc: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBE] PDT-PHY- Receive specification: General and receiver minimum input sensitivity and channel rejection

Hello Wook Bong ,

In Table xx-y1, you have an entry "Minimum sensitivity (160 MHz PPDU) (dBm)". In clause 21 and clause 27, this entry is "Minimum sensitivity (160 MHz or 80+80 MHz PPDU) (dBm)". I may miss the discussion in PHY ad-hoc but may I know whether we shall update this entry in your table to 160 MHz or 80 + 80 MHz too? A similar quarion for your 320 MHz entry too.

Thanks and Regards,
Edward

On Thu, Aug 27, 2020 at 4:49 PM Wook Bong Lee <wookbong.lee@xxxxxxxxxxx> wrote:

Hi Yujin,

Thanks for comment.

I already marked coding rate of 4K QAM in yellow. (Yellow highlighted texts are TBD in my draft as described in the abstract.)

During conference call, we can put 3/4(TBD) 5/6 (TBD) or [3/4] [5/6] if necessary.

Best regards,

Wook Bong Lee

From: Yujin Noh [mailto:yujin.noh@xxxxxxxxxxxx]
Sent: Thursday, August 27, 2020 1:39 PM
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBE] PDT-PHY- Receive specification: General and receiver minimum input sensitivity and channel rejection

Hi Wookbong.

Thank you for sharing the document.

Please find the comment in attached.

Regards,

Yujin

From: Youhan Kim <youhank@xxxxxxxxxxxxxxxx>
Sent: Tuesday, August 25, 2020 5:38 PM
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBE] PDT-PHY- Receive specification: General and receiver minimum input sensitivity and channel rejection

Sure, thanks Wookbong.

Regards,

Youhan

From: Wook Bong Lee <wookbong.lee@xxxxxxxxxxx>
Sent: Tuesday, August 25, 2020 5:37 PM
To: Youhan Kim <youhank@xxxxxxxxxxxxxxxx>; STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: RE: [STDS-802-11-TGBE] PDT-PHY- Receive specification: General and receiver minimum input sensitivity and channel rejection

CAUTION: This email originated from outside of the organization.

Thanks Youhan.

Looks good.

I somehow missed those two sections. Thanks for writing those sections.

Can I add you as an author?

Will upload revision soon.

Best regards,

Wook Bong Lee

From: Youhan Kim [mailto:youhank@xxxxxxxxxxxxxxxx]
Sent: Tuesday, August 25, 2020 5:04 PM
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBE] PDT-PHY- Receive specification: General and receiver minimum input sensitivity and channel rejection

Thanks Wookbong for the nice work.

Please see attached for my feedback.

Regards.

Youhan

From: Wook Bong Lee <wookbong.lee@xxxxxxxxxxx>
Sent: Thursday, August 20, 2020 7:32 AM
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBE] PDT-PHY- Receive specification: General and receiver minimum input sensitivity and channel rejection

CAUTION: This email originated from outside of the organization.

Hi all,

I just uploaded draft text proposal for receive specification: General and receiver minimum input sensitivity and channel rejection.

11-20/1254r0 PDT-PHY-Receive specification: General and receiver minimum input sensitivity and channel rejection

Best regards,

Wook Bong Lee

From: Wook Bong Lee
Sent: Friday, July 31, 2020 5:33 PM
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: PDT-PHY- Receive specification: General and receiver minimum input sensitivity and channel rejection

Hello all,

This is for PHY- Receive specification: General and receiver minimum input sensitivity and channel rejection.

As you can find in 11ax spec, we have following three sections for this.

34.3.20 – Receiver specification

34.3.20.1 General
34..3.20.2 Receiver minimum input sensitivity
34.3.20.3 Adjacent channel rejection

There is no motion for these sections.

It can be similar to 11ax.

I can volunteer for these sections.

If you have any suggestion, please let us know.

Best regards,

Wook Bong Lee

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