Re: [STDS-802-11-TGBE] EMLSR and EMLMR definitions

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> And for "all of the following frame exchanges" seems eternal in scope. If this definition is intended to be read by someone lacking extensive 802.11 knowledge then it could say, for "the immediately following set of frame exchanges"

Or just leave the ending of the condition unstated:

enhanced multi-link single radio (EMLSR) operation: A mode of operation that allows a non-access point (non-AP) multi-link device (MLD) with multiple receive chains to listen on a set of enabled links, then switch to one available link within the set.

> I think that at least for emlsr, instead of switch it might say something like "receive"

> It turns out that listening on the link on which receive is not occurring is still possible during the receive

You mean

? That's not worse, but still doesn't explain the key point, which is that the receive chains are reallocated to be used on the same channel.

My suggestion would be:

enhanced multi-link single radio (EMLSR) operation: A mode of operation that allows a non-access point (non-AP) multi-link device (MLD) to listen on a set of enabled links using one radio frequency (RF) chain on each, and then switch all the RF chains to one of the links for subsequent single-user multiple input, multiple output (SU-MIMO) operation on that link.

Also, maybe it's because I wasn't there, but I find this definition rather confusing:

enhanced multi-link multiple radio (EMLMR) operation: A mode of operation that allows any of the stations (STAs) affiliated with a non-access point (non-AP) multi-link device (MLD) on a set of enabled links, to switch receive and transmit spatial streams of one available link within the set, to increase resources on that link, for all of the following frame exchanges.

I initially read "switch tx and rx" as being that tx becomes rx and rx becomes tx.

Even if it means "transfer both of them to another link" (i.e. you need to have

a "to X" after the "switch"), isn't this a definition of EMLSR? What does EMLMR

do that EMLSR doesn't do?

Thanks,

Mark

Mark RISON, Standards Architect, WLAN English/Esperanto/Français

Samsung Cambridge Solution Centre Tel: +44 1223 434600

Innovation Park, Cambridge CB4 0DS Fax: +44 1223 434601

ROYAUME UNI WWW: http://www.samsung.com/uk

From: Matthew Fischer <matthew.fischer@xxxxxxxxx>
Sent: Friday, 9 September 2022 14:44
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBE] EMLSR and EMLMR definitions

I think that at least for emlsr, instead of switch it might say something like "receive"

It turns out that listening on the link on which receive is not occurring is still possible during the receive

And for "all of the following frame exchanges" seems eternal in scope. If this definition is intended to be read by someone lacking extensive 802.11 knowledge then it could say, for "the immediately following set of frame exchanges"

On Fri, Sep 9, 2022, 2:19 PM Stephen McCann <mccann.stephen@xxxxxxxxx> wrote:

Dear all,

thanks for your comments following my presentation of 11-22-1196r3.

Here are the revised definitions that I presented:

enhanced multi-link multiple radio (EMLMR) operation: A mode of operation that allows any of the stations (STAs) affiliated with a non-access point (non-AP) multi-link device (MLD) on a set of enabled links, to switch receive and transmit spatial streams of one available link within the set, to increase resources on that link, for all of the following frame exchanges.

enhanced multi-link single radio (EMLSR) operation: A mode of operation that allows a non-access point (non-AP) multi-link device (MLD) with multiple receive chains to listen on a set of enabled links, then switch to one available link within the set, for all of the following frame exchanges.

Please let me know if you have any further suggestions. If we can converge on suitable text, then I can represent an updated submission next week.

Kind regards

Stephen

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