Signalling support for redundancy capabilities for EHT
An extremely high-throughput (EHT) station (STA) encodes a management frame to include a quality-of-service (QoS) capability element that includes a QoS information field configured to signal QoS redundancy capability. The EHT STA may set a QoS redundancy bit in the QoS information field of the QoS capabilities element to indicate (i.e., signal) that the EHT STA supports redundancy for QoS data frames. The EHT STA may include an Extended Capabilities element in the management frame and set a new redundancy indicator bit in the Extended Capabilities element to indicate (i.e., signal) that the EHT STA supports redundancy for a select subset of IEEE802.11 management frames.
1. An apparatus of an extremely high-throughput (EHT) station (STA), the apparatus comprising: processing circuitry and memory, wherein the processing circuitry is configured to:
encode a management frame for transmission, the management frame encoded to include a quality-of-service (QoS) capability element that includes a QoS information field configured to signal QoS redundancy capability;
set a QoS redundancy bit in the QoS information field of the QoS capabilities element to indicate that the EHT STA supports redundancy for QoS data frames; and
generate an Extended Capabilities element to include in the management frame and set a redundancy indicator bit in the Extended Capabilities element to indicate that the EHT STA supports redundancy for a subset of management frames.
2. The apparatus of claim 1 , wherein if the EHT STA indicated support for redundancy for QoS data frames, the processing circuitry is to configure the EHT STA to encode duplicates of QoS data frames for transmission when indicated in a MAC header or for a traffic stream based on a traffic stream identifier (TID).
3. The apparatus of claim 2 , wherein when the EHT STA indicated support for redundancy for a subset of management frames, the processing circuitry is to configure the EHT STA to encode duplicates of management frames of the subset for transmission when indicated in a MAC header of the management frame or based on an agreement with another EHT STA.
4. The apparatus of claim 3 , wherein the processing circuitry is configured to refrain from setting the QoS redundancy bit in the QoS information field of the QoS capabilities element when the EHT STA does not support redundancy for QoS data frames, and
wherein the processing circuitry is configured to refrain from setting the redundancy indicator bit in the Extended Capabilities element when the EHT STA does not support redundancy for the subset of management frames.
5. The apparatus of claim 4 , wherein EHT STA is configured to negotiation a block-acknowledge (BA) agreement with another EHT STA, the BA agreement indicating whether the QoS data frames are to be duplicated and/or whether the subset of management frames are to be duplicated.
6. The apparatus of claim 5 , wherein when the EHT STA is operating as an EHT access point STA (AP STA), the management frame is a beacon frame, and the subset of management frames comprises at least beacon frames.
7. The apparatus of claim 6 , wherein when the EHT STA is operating as a non-AP STA, the management frame is an association request frame or reassociation request frame.
8. The apparatus of claim 1 , wherein for multi-link device (MLD) operation (MLO) when the EHT STA is operating as a STA affiliated with a multi-link device (MLD), the MLD comprising a plurality of affiliated STAs, the processing circuitry is configured to encode a management frame to include an Intra-Access Category Priority element to indicate a redundant transmission requirement, and
wherein based on the indication of the redundant transmission requirement, the processing circuitry is configured to cause the MLD to initiate redundant packet transmission over more than one link with another MLD.
9. The apparatus of claim 8 , wherein the redundant transmission requirement is for a particular access category or traffic stream.
10. The apparatus of claim 9 , wherein the management frame that is encoded to include the Intra-Access Category Priority element comprises one or more of an add traffic stream (ADDTS) Request frame, a quality-of-service (QoS) Map Configure frame and a Stream Classification Service (SCS) Request frame.
11. The apparatus of claim 10 , wherein the redundant transmission requirement is a requirement of an established block acknowledge (BA) agreement that allows QoS Data frames of a TID, aggregated within A-MPDUs, to be exchanged between the two MLDs on an available link.
12. The apparatus of claim 9 , wherein the processing circuitry is configured to encode the Intra-Access Category Priority element to include a redundancy indication (RI) subfield in an Intra-Access Priority field within the Intra-Access Category Priority element to indicate the redundant transmission requirement, and
wherein when set, the RI indicates that a traffic stream (TS) is to be duplicated and transmitted over more than one link.
13. The apparatus of claim 9 , wherein the MLD is either a STA MLD or an AP MLD,
wherein the MLD has a single medium access control (MAC) service access point (SAP) to logical link control (LLC), which includes one MAC data service.
14. A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of an extremely high-throughput (EHT) station (STA), wherein the processing circuitry is configured to:
encode a management frame for transmission, the management frame encoded to include a quality-of-service (QoS) capability element that includes a QoS information field configured to signal QoS redundancy capability;
set a QoS redundancy bit in the QoS information field of the QoS capabilities element to indicate that the EHT STA supports redundancy for QoS data frames; and
generate an Extended Capabilities element to include in the management frame and set a redundancy indicator bit in the Extended Capabilities element to indicate that the EHT STA supports redundancy for a subset of management frames.
15. The non-transitory computer-readable storage medium of claim 14 , wherein if the EHT STA indicated support for redundancy for QoS data frames, the processing circuitry is to configure the EHT STA to encode duplicates of QoS data frames for transmission when indicated in a MAC header or for a traffic stream based on a traffic stream identifier (TID).
16. The non-transitory computer-readable storage medium of claim 15 , wherein when the EHT STA indicated support for redundancy for a subset of management frames, the processing circuitry is to configure the EHT STA to encode duplicates of management frames of the subset for transmission when indicated in a MAC header of the management frame or based on an agreement with another EHT STA.
17. The non-transitory computer-readable storage medium of claim 16 , wherein the processing circuitry is configured to refrain from setting the QoS redundancy bit in the QoS information field of the QoS capabilities element when the EHT STA does not support redundancy for QoS data frames, and
wherein the processing circuitry is configured to refrain from setting the redundancy indicator bit in the Extended Capabilities element when the EHT STA does not support redundancy for the subset of management frames.
18. The non-transitory computer-readable storage medium of claim 17 , wherein EHT STA is configured to negotiation a block-acknowledge (BA) agreement with another EHT STA, the BA agreement indicating whether the QoS data frames are to be duplicated and/or whether the subset of management frames are to be duplicated.
19. An apparatus of an extremely high-throughput (EHT) station (STA), the apparatus comprising: processing circuitry and memory, wherein for multi-link device (MLD) operation (MLO) when the EHT STA is operating as a STA affiliated with a multi-link device (MLD), the MLD comprising a plurality of affiliated STAs, the processing circuitry is configured to encode a management frame to include an Intra-Access Category Priority element to indicate a redundant transmission requirement, and
wherein based on the indication of the redundant transmission requirement, the processing circuitry is configured to cause the MLD to initiate redundant packet transmission over more than one link with another MLD.
20. The apparatus of claim 19 , wherein the redundant transmission requirement is for a particular access category or traffic stream.