All,
Since we were not able to cover all the questions during the discussion in MAC call earlier this week, we have uploaded a revision (418r3)
with a few clarifications (see new slides 9, 10, 11). We have also updated the proposed SP#1 as follows:
- Do you support defining a QoS mechanism so that the AP MLD and non-AP MLD can:
- Announce new QoS capabilities (for LLRS) of the MLD
- Provide traffic stream QoS description to enable classification across the MLD
- Use TIDs 8 - 15 to indicate a new class of QoS data streams (e.g. LLRS streams) mapped to EDCA ACs with associated QoS parameters (as defined in item 2.)
- Note: the TID values are signaled in the QoS Control field of corresponding Data frames
- Note: if an AP is not part of an AP MLD (legacy AP), the same mechanism would be used between the AP and a non-AP STA
Additional considerations:
- There is a need to enable differentiation for more than 2 traffic streams per access category (limitation in the current spec). For instance, voice, gaming, AV/VR, control/automation
streams in a single device/AP will need differentiation beyond VO and VI traffic classes. See limitations in existing mechanisms in slides 9 and 10.
- The re-use of TIDs 8 to 15 to identify traffic streams will enable the prioritization based on new metrics (e.g. latency bound, jitter, reliability) and can be dynamically mapped to
ACs
- HCCA, ADDTS, TSPEC provide QoS negotiation, but they are unlikely to be implemented as defined in the current spec. We propose a simplified QoS negotiation approach in the context
of 11be that also incorporates/leverages MLO and enables traffic stream differentiation with the typical EDCA implementations.
Hopefully, this helps address some of the questions, but we welcome any further discussion.
Thanks,
Dave
-----------------------------------------------------------
Dave Cavalcanti, PhD
Principal Engineer
Wireless Communications Research, Intel Labs
Intel Corporation
dave.cavalcanti@xxxxxxxxx
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