Hi, Pooya,
Thanks for the proposal.
Several comments as below.
-
In 35.3.7.1.5,
“An AP MLD may use the procedures defined in the subclause to advertise a TID-to-link mapping regardless of the value that is set for the TID-to-link Mapping Negotiation Supported subfield in the MLD Capabilities field of the Basic Multi-Link elements that
are transmitted by its affiliated APs.” What is the purpose while AP does so? If the non-AP MLD cannot support the advertised mapping, it looks the announced mapping won’t work.
- Thanks for the comment, answering in two parts:
- We received a comment that an AP should be able to make links unavailable without having to support TID to link mapping negotiation in full capacity. This operation (making AP unavailable for all associated MLDs for a temporary amount of time) does not require the other aspects of TID mapping negotiation. But we are open to remove this requirement.
- In reponse to your point "if non-AP MLD cannot support" : I will soon upload a new version clarifying this further. The idea is that a non-AP MLD only has to support the "mode 1", or all-TIDs-to-link-subset mapping. If another mode is advertised, we describe how that advertisement is applied to inidividual non-AP MLDs.
-
Link disable: if generating MLME-STOP.request primitive when disabling the link, does that mean the legacy STAs on that link is disassociated? It looks that the BSS will stop for
all associated STAs.
- Yes non-MLDs or legacy STAs will lose connectivity. (We can revise this further in a future draft to be more specific) In a new revision to be uploaded I have revised the MLME primitives to use a new set of "diable" and "enable" commands, but still the same disassociation will apply to legacy devices.
-
It is not clear how to do groupcast T2L mapping advertising for a group of STAs and we think it is important. You have “The
AID List element is always present in a frame with a broadcast RA to indicate a list of target MLDs for the request…” It is not clear how to carry the AID list element
for broadcasting mapping instructions. AID list element is included in the TID-To-Link Mapping Request frame but no normative behaviors are described in the proposal.
- For broadcast TID to link mapping we will be using Beacons and Probe Responses. The AID list is added to assist with negotiations with a group of STAs but not all STAs. For this group negotiation mode we found that the text that is already there for individual negotiation continues to apply, but we can add notes to clarify this.
BRs,
Frank
Opening this thread to discuss 1793, please reply with your comments
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