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Re: [STDS-802-11-TGBN] Agenda Request: LB291 CR MAC on Co-TDMA 18 CIDs



Hi Klaus,

 

In addition to what Dibakar wrote below:

In max configuration you may signal AC, time, LLI and TSF. It is very unclear how this going to help polling STA to decide on what actions it should take.

Example: AP1 send ICF saying “I’m polling AC_VO”

AP2 respond back with ICR saying “I want AC_VI (ups, it cannot do that), I need 2 ms of time; I’m currently servicing LLI (what does it mean?) that actually belong to AC_VO (but I have no way of telling you that)  and my TSF for most urgent traffic XXXX.. but, ups, my urgent traffic belong to AC_BE but I have no way of telling you that as well ”

AP3 respond with ICR saying “I want VO – and I can respond VO because ICF indicated VO; I need 2ms of time; I have no LLI; and my TSF ins YYYY, where YYY is “more urgent” than XXX.

 

How this going to help ?

 

Another, less convoluted example:

AP2 say “I need VO; I need 1ms of time; I do not have LLI; my TSF is XXX

AP3 say: “I need VO; I need 1ms of time; I have LLI; my TSF is YYY” and YYY is “more urgent” than “XXX”.

 

How this information going to help AP1?

 

Third example:

AP2 say “I need VO; I need 1ms of time; I do not have LLI; my TSF is XXX

AP3 say: “I need VO; I need 1ms of time; I have LLI; my TSF is YYY” and YYY is “more urgent” than “XXX”.

AP1 finishes _current_ TXOP;

AP3 win contention , perform _usual , non-CTDMA TXOP, send its own LLI data.

AP1 plan own TXOP that it is going to share it with AP3; AP1 again grab TXOP and gives APTXOP to AP3 because it thinks AP3 need to send LLI data…

How this can be prevented/avoided with that scheme ?

 

 

Side question: what exactly “servicing LLI” mean? It mean a) in this shared TXOP I’ll be sending LLI data b) I have LLI stream itself c) my STAs has LLI stream with me d) I plan to send/solicit some LLI data in a next TXOP.

 

Yet another comment on the note that you have :

NOTE—The Time Requested may be set to the time duration of a pre-planned TXOP for an AC that is the same or higher than the primary AC indicated in the ICF (see 9.3.1.22.7 Feedback User Info field, Figure 9-114g—Feedback Information field if the Feedback Type field is set to 3) and may include both DL and UL transmissions

 

This a) suggest/advises particular implementation on AP side b) “may be set”…. How this note helps/explains anything if I sent to a value that is NOT pre-planned TXOP ?

 

Dmitry

 

From: Das, Dibakar <dibakar.das@xxxxxxxxx>
Sent: Monday, March 2, 2026 10:17 AM
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBN] Agenda Request: LB291 CR MAC on Co-TDMA 18 CIDs

 

Hi Klaus,

 

How the expiration time and LLI sigaling work together is not clear to me. It seems redundant.

 

Regards,

Dibakar

 

From: Gaius Yao Huang Wee <yaohuang.wee@xxxxxxxxxxxxxxxx>
Sent: Sunday, March 1, 2026 5:58 PM
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBN] Agenda Request: LB291 CR MAC on Co-TDMA 18 CIDs

 

Hi Klaus,

 

Thanks for sharing the latest revision.

Please see attached for some friendly (and mostly editorial) suggestions.

 

Best regards,

Gaius

 

From: Klaus Doppler (Nokia) <0000320c1b22a542-dmarc-request@xxxxxxxxxxxxxxxxx>
Sent: Saturday, 28 February 2026 3:57 am
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGBN] Agenda Request: LB291 CR MAC on Co-TDMA 18 CIDs

 

Hi Everyone,

 

Thank you to Matt, Arik, Dmitry and others who provided comments during my presentation in the telco. I have incorporated your comments and uploaded r2 version to the server. 

 

Alfred, could you please add the CR to the MAC queue for the ad-hoc/IEEE meeting in Vancouver? 

 

BR, 

Klaus


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