Multi-link communication
This disclosure provides systems, methods, and apparatuses for associating a wireless communication device such as a wireless station (STA) of a STA multi-link device (MLD) with an access point (AP) MLD that includes a first AP associated with a first communication link of the AP MLD and includes one or more secondary APs associated with one or more respective secondary communication links of the first AP MLD. The first AP includes one or more virtual APs, and the first AP and the one or more virtual APs of the first AP belong to a first multiple basic service set identifier (BSSID) set associated with the first communication link. The AP MLD transmits a frame including a first element carrying discovery information for the first AP and the one or more virtual APs belonging to the first multiple BSSID set, and including a second element carrying discovery information for the one or more secondary APs of the first AP MLD associated with the one or more respective secondary communication links of the first AP MLD.
1. A method for wireless communication by an access point (AP) multi-link device (MLD) including a first AP associated with a first communication link of the AP MLD and including one or more second APs associated with one or more respective second communication links of the AP MLD, the method comprising:
generating a frame by the first AP of the AP MLD, the frame including:
a first plurality of elements carrying information for the first AP of the AP MLD; and
one or more per-link profile subelements, each of the per-link profile subelements including a second plurality of elements carrying information for a respective second AP of the one or more second APs of the AP MLD, wherein an absence of an element of the first plurality of elements from the second plurality of elements included in a respective per-link profile subelement indicates that the second AP corresponding to the respective per-link profile subelement inherits information from the element of the first plurality of elements corresponding to the first AP, wherein a presence of an element of the first plurality of elements in the second plurality of elements included in a respective per-link profile subelement indicates that information carried in the element present in the second plurality of elements included in the respective per-link profile subelement is different from information carried in the element of the first plurality of elements for the first AP; and
transmitting the frame, by the first AP of the AP MLD, over the first communication link of the AP MLD.
2. The method of claim 1 , wherein the frame indicates whether or not a critical update has occurred to one or more operation parameters for the first AP of the AP MLD.
3. The method of claim 1 , wherein the frame includes a Multi-Link element including the one or more per-link profile subelements.
4. The method of claim 3 , wherein the Multi-Link element includes a common information field indicating one or more common attributes shared by the one or more second APs of the AP MLD.
5. The method of claim 4 , wherein the one or more common attributes include one or more of a medium access control (MAC) address of the AP MLD, capabilities of the AP MLD, or operation parameters of the AP MLD.
6. The method of claim 4 , wherein the Multi-Link element further comprises a control field indicating a presence or absence of at least one of the common attributes in the Multi-Link element.
7. The method of claim 1 , wherein each of the per-link profile subelements indicates whether the respective per-link profile subelement carries all of the information for a respective second AP of the AP MLD or carries a portion of the information for the respective second AP of the AP MLD.
8. The method of claim 1 , wherein each of the per-link profile subelements includes a link identifier (ID) subfield indicating a value that uniquely identifies the second communication link that is associated with a respective second AP of the AP MLD.
9. The method of claim 1 , wherein the frame further includes a Reduced Neighbor Report element carrying one or more Neighbor AP Information fields, each Neighbor AP Information field indicating a link identifier (ID) of a respective second AP of the AP MLD.
10. The method of claim 9 , wherein the Reduced Neighbor Report element indicates whether or not a critical update has occurred to one or more operation parameters for any of the one or more second APs of the AP MLD.
11. The method of claim 1 , wherein the information for a respective AP of the first AP and the one or more second APs of the AP MLD includes channel information, capability information, and one or more operation parameters for the respective AP.
12. The method of claim 11 , wherein the information for the respective AP further includes a basic service set identifier (BS SID) of the respective AP.
13. The method of claim 11 , wherein the capability information includes one or more of high-throughput (HT) capabilities, very high-throughput (VHT) capabilities, high efficiency (HE) capabilities, or extremely high-throughput (EHT) capabilities.
14. The method of claim 11 , wherein the operation parameters include one or more of high-throughput (HT) operation parameters, very high-throughput (VHT) operation parameters, (HE) operation parameters, extremely high-throughput (EHT) operation parameters, enhanced distributed channel access (EDCA) parameters, multiuser (MU) EDCA parameters, uplink (UL) orthogonal frequency division multiple access (OFDMA) random access (UORA) parameters, target wait time (TWT) parameters, fast initial link setup (FILS) parameters, or spatial reuse (SR) parameters.
15. An access point (AP) multi-link device (MLD) including a first AP associated with a first communication link of the AP MLD and including one or more second APs associated with one or more respective second communication links of the AP MLD, the AP MLD comprising:
at least one processor; and
at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor, causes the AP MLD to:
generate a frame by the first AP of the AP MLD, the frame including:
a first plurality of elements carrying information for the first AP of the AP MLD; and
one or more per-link profile subelements, each of the one or more per-link profile subelements including a second plurality of elements carrying information for a respective second AP of the one or more second APs of the AP MLD, wherein an absence of an element of the first plurality of elements from the second plurality of elements included in a respective per-link profile subelement indicates that the second AP corresponding to the respective per-link profile subelement inherits information from the element of the first plurality of elements corresponding to the first AP, wherein a presence of an element of the first plurality of elements in the second plurality of elements included in a respective per-link profile subelement indicates that information carried in the element present in the second plurality of elements included in the respective per-link profile subelement is different from information carried in the element of the first plurality of elements for the first AP; and
transmit the frame, by the first AP of the AP MLD, over the first communication link of the AP MLD.
16. The AP MLD of claim 15 , wherein the frame indicates whether or not a critical update has occurred to one or more operation parameters for the first AP of the AP MLD.
17. The AP MLD of claim 15 , wherein the frame includes a Multi-Link element including the one or more per-link profile subelements.
18. The AP MLD of claim 17 , wherein the Multi-Link element includes a common information field indicating one or more common attributes shared by the one or more second APs of the AP MLD.
19. The AP MLD of claim 18 , wherein the one or more common attributes include one or more of a medium access control (MAC) address of the AP MLD, capabilities of the AP MLD, or operation parameters of the AP MLD.
20. The AP MLD of claim 18 , wherein the Multi-Link element further comprises a control field indicating a presence or absence of at least one of the common attributes in the Multi-link element.
21. The AP MLD of claim 15 , wherein each of the per-link profile subelements indicates whether the respective per-link profile subelement carries all of the information for a respective second AP of the AP MLD or carries a portion of the information for the respective second AP of the AP MLD.
22. The AP MLD of claim 15 , wherein each of the per-link profile subelements includes a link identifier (ID) subfield indicating a value that uniquely identifies the second communication link that is associated with a respective second AP of the AP MLD.
23. The AP MLD of claim 15 , wherein the frame further includes a Reduced Neighbor Report element carrying one or more Neighbor AP Information fields, each Neighbor AP Information field indicating a link identifier (ID) of a respective second AP of the AP MLD.
24. The AP MLD of claim 23 , wherein the Reduced Neighbor Report element indicates whether or not a critical update has occurred to one or more operation parameters for any of the one or more second APs of the AP MLD.
25. The AP MLD of claim 15 , wherein the information for a respective AP of the first AP and the one or more second APs of the AP MLD includes channel information, one or more capabilities, and one or more operation parameters for the respective AP.
26. The AP MLD of claim 25 , wherein the information for the respective AP further includes a basic service set identifier (BS SID) of the respective AP.
27. The AP MLD of claim 25 , wherein the capability information includes one or more of high-throughput (HT) capabilities, very high-throughput (VHT) capabilities, high efficiency (HE) capabilities, or extremely high-throughput (EHT) capabilities.
28. The AP MLD of claim 25 , wherein the operation parameters include one or more of high-throughput (HT) operation parameters, very high-throughput (VHT) operation parameters, (HE) operation parameters, extremely high-throughput (EHT) operation parameters, enhanced distributed channel access (EDCA) parameters, multiuser (MU) EDCA parameters, uplink (UL) orthogonal frequency division multiple access (OFDMA) random access (UORA) parameters, target wait time (TWT) parameters, fast initial link setup (FILS) parameters, or spatial reuse (SR) parameters.