Multiple-BSSID support in multi-link operation in wireless communications

1. A method, comprising:

assigning a plurality of different medium access control (MAC) addresses to a plurality of virtual access point (AP) multi-link devices (MLDs) that are implemented within a physical AP MLD such that each of the plurality of virtual AP MLDs is assigned a respective MAC address of the plurality of different MAC addresses; and

establishing wireless communications with one or more stations (STAs) over a plurality of links,

wherein the establishing the wireless communications with the one or more STAs over the plurality of links comprises transmitting, by a first virtual AP MLD of the plurality of virtual AP MLDs, a frame comprising a Multiple-Link information element (IE) carrying one or more Multiple Link Profile sub-elements with each of the one or more Multiple Link Profile sub-elements comprising a delivery traffic indication message (DTIM) period field and a DTIM count field,

wherein the DTIM period field indicates a DTIM period of the AP in the AP MLD operating on the respective link, and

wherein the DTIM count field indicates a DTIM count of the AP in the AP MLD operating on the respective link.

2. The method of claim 1 , wherein the establishing the wireless communications with the one or more STAs over the plurality of links further comprises operating each of the plurality of virtual AP MLDs on each of the plurality of links under a respective one of a plurality of different basic service set identifiers (BSSIDs).

3. The method of claim 2 ,

wherein the frame further comprises capabilities and operating parameters of a first BSSID of the plurality of different BSSIDs under which the first virtual AP MLD operates on at least a first link of the plurality of links.

4. The method of claim 1 , wherein the Multiple-Link IE further contains capabilities and operating parameters of a third BSSID of the plurality of different BSSIDs under which the first virtual AP MLD operates on a second link of the plurality of links.

5. The method of claim 4 , wherein the Multiple-Link IE further contains one or more of:

one or more BSSIDs of the plurality of different BSSIDs on the first link and associated with the first virtual AP MLD,

a reduced neighbor report that provides a link identifier (ID) mapping to a respective operating class, a respective channel number, and a respective BSSID of each link of the plurality of links, and

one or more other BSSIDs on one or more other links other than the first link and associated with the first virtual AP MLD.

6. The method of claim 1 , wherein each of the one or more Multiple Link Profile sub-elements further comprises a link identifier (ID) field and a capability information field, wherein the link ID filed indicates a respective link ID associated with a respective link with a mapping between the respective link and the respective link ID defined in a Reduced Neighbor Report (RNR) element in the frame, and wherein the capability information field indicates a capability of an AP in the AP MLD operating on the respective link.

7. The method of claim 1 , wherein the frame further comprises a Multiple-BSSID IE containing capabilities and operating parameters of a second BSSID of the plurality of different BSSIDs under which a second virtual AP MLD of the plurality of virtual AP MLDs operates.

8. The method of claim 7 , wherein the Multiple-BSSID IE further contains a change request of at least a second BSSID of the plurality of different BSSIDs under which a second virtual AP MLD of the plurality of virtual AP MLDs operates on one or more links of the plurality of links.

9. The method of claim 7 , wherein the Multiple-BSSID IE further contains a first Multiple-Link IE, wherein the first Multiple-Link IE has a first BSSID profile sub-element associated with the first BSSID, and wherein the first Multiple-Link IE contains a first MAC address of the first virtual AP MLD.

10. The method of claim 9 , wherein the first Multiple-Link IE further contains a change request of at least a third BSSID of the plurality of different BSSIDs under which the first virtual AP MLD operates on a second link of the plurality of links.

11. The method of claim 9 , wherein the Multiple-BSSID IE further contains a second Multiple-Link IE, wherein the second Multiple-Link IE has a second BSSID profile sub-element associated with a second BSSID of the plurality of different BSSIDs under which a second virtual AP MLD of the plurality of virtual AP MLDs operates on one or more links of the plurality of links, and wherein the second Multiple-Link IE contains a second MAC address of the second virtual AP MLD.

12. The method of claim 11 , wherein the second Multiple-Link IE further contains either or both of:

a change request of a fourth BSSID of the plurality of different BSSIDs under which the second virtual AP MLD operates on one or more links of the plurality of links, and

a change request of a fifth BSSID of the plurality of different BSSIDs under which a third virtual AP MLD of the plurality of virtual AP MLDs operates on another one or more links of the plurality of links.

13. A method, comprising:

establishing a wireless communication with a first virtual access point (AP) multi-link device (MLD) of a plurality of virtual AP MLDs that are implemented within a physical AP MLD over a first link of a plurality of links such that:

each of the plurality of virtual AP MLDs is assigned a respective medium access control (MAC) address of a plurality of different MAC addresses, and

each of the plurality of virtual AP MLDs operates on each of the plurality of links under a respective one of a plurality of different basic service set identifiers (BSSIDs); and

receiving, from the first virtual AP MLD, a frame containing capabilities and operating parameters of a first BSSID of the plurality of different BSSIDs under which the first virtual AP MLD operates on at least the first link of the plurality of links,

wherein the frame further comprises a Multiple-Link information element (IE) carrying one or more Multiple Link Profile sub-elements with each of the one or more Multiple Link Profile sub-elements comprising a delivery traffic indication message (DTIM) period field and a DTIM count field,

wherein the DTIM period field indicates a DTIM period of the AP in the AP MLD operating on the respective link, and

wherein the DTIM count field indicates a DTIM count of the AP in the AP MLD operating on the respective link.

14. The method of claim 13 , wherein the AP MLD operates a plurality of different Internet Protocol (IP) subnets over the plurality of links, wherein each of the plurality of different IP subnets corresponds to a respective one of the plurality of virtual AP MLDs, and wherein each of the plurality of different IP subnets is operated by the respective one of the plurality of virtual AP MLDs over one or more links of the plurality of links.

15. The method of claim 13 , wherein the Multiple-Link IE further contains capabilities and operating parameters of a third BSSID of the plurality of different BSSIDs under which the first virtual AP MLD operates on a second link of the plurality of links, and wherein the Multiple-Link IE further contains one or more of:

one or more BSSIDs of the plurality of different BSSIDs on the first link and associated with the first virtual AP MLD,

a reduced neighbor report that provides a link identifier (ID) mapping to a respective operating class, a respective channel number, and a respective BSSID of each link of the plurality of links, and

one or more other BSSIDs on one or more other links other than the first link and associated with the first virtual AP MLD.

16. The method of claim 13 , wherein the frame further comprises a Multiple-BSSID IE containing capabilities and operating parameters of a second BSSID of the plurality of different BSSIDs under which a second virtual AP MLD of the plurality of virtual AP MLDs operates.

17. The method of claim 16 , wherein the Multiple-BSSID IE further contains a first Multiple-Link IE, wherein the first Multiple-Link IE has a first BSSID profile sub-element associated with the first BSSID, wherein the first Multiple-Link IE contains a first MAC address of the first virtual AP MLD, and wherein the Multiple-BSSID IE further contains a change request of at least a second BSSID of the plurality of different BSSIDs under which a second virtual AP MLD of the plurality of virtual AP MLDs operates on one or more links of the plurality of links.

18. The method of claim 17 , wherein the first Multiple-Link IE further contains a change request of at least a third BSSID of the plurality of different BSSIDs under which the first virtual AP MLD operates on a second link of the plurality of links.

19. The method of claim 17 , wherein the Multiple-BSSID IE further contains a second Multiple-Link IE, wherein the second Multiple-Link IE has a second BSSID profile sub-element associated with a second BSSID of the plurality of different BSSIDs under which a second virtual AP MLD of the plurality of virtual AP MLDs operates on one or more links of the plurality of links, wherein the second Multiple-Link IE contains a second MAC address of the second virtual AP MLD, and wherein the second Multiple-Link IE further contains either or both of:

a change request of a fourth BSSID of the plurality of different BSSIDs under which the second virtual AP MLD operates on one or more links of the plurality of links, and

a change request of a fifth BSSID of the plurality of different BSSIDs under which a third virtual AP MLD of the plurality of virtual AP MLDs operates on another one or more links of the plurality of links.