Anchor device association for sidelink positioning

1. A method for wireless communications, comprising:

identifying, by a user equipment (UE), a plurality of sidelink positioning anchor devices; and

based on one or more parameters associated with each of the plurality of sidelink positioning anchor devices, associating the UE with one or more sidelink positioning anchor devices from the plurality of sidelink positioning anchor devices, wherein the one or more parameters include at least one of a reference signal received power (RSRP) measurement associated with each of the plurality of sidelink positioning anchor devices, a distance measurement associated with each of the plurality of sidelink positioning anchor devices, a line of sight measurement associated with each of the plurality of sidelink positioning anchor devices, an anchor device capability associated with each of the plurality of sidelink positioning anchor devices, and an anchor device category associated with each of the plurality of sidelink positioning anchor devices.

2. The method of claim 1 , further comprising:

determining, by the UE, the one or more parameters associated with each of the plurality of sidelink positioning anchor devices.

3. The method of claim 1 , further comprising:

receiving, by the UE from the plurality of sidelink positioning anchor devices, the one or more parameters associated with each of the plurality of sidelink positioning anchor devices.

4. The method of claim 3 , further comprising:

transmitting, by the UE, a positioning query message to the plurality of sidelink positioning anchor devices, wherein the one or more parameters are received by the UE based on the positioning query message.

5. The method of claim 1 , wherein the RSRP measurement associated with each of the plurality of sidelink positioning anchor devices corresponds to at least one of a demodulation reference signal (DMRS), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), and a positioning reference signal (PRS).

6. The method of claim 1 , further comprising:

associating the UE with the one or more sidelink positioning anchor devices based on one or more RSRP measurements of the one or more sidelink positioning anchor devices being greater than one or more RSRP measurements of other sidelink positioning anchor devices of the plurality of sidelink positioning anchor devices.

7. The method of claim 1 , further comprising:

associating the UE with the one or more sidelink positioning anchor devices from the plurality of sidelink positioning anchor devices based on one or more RSRP measurements of the one or more sidelink positioning anchor devices being greater than an RSRP measurement threshold value.

8. The method of claim 1 , wherein the distance measurement associated with each of the plurality of sidelink positioning anchor devices is based on at least one of a geolocation associated with each of the plurality of sidelink positioning anchor devices and a zone identifier associated with each of the plurality of sidelink positioning anchor devices.

9. The method of claim 1 , further comprising:

associating the UE with the one or more sidelink positioning anchor devices based on one or more distance measurements of the one or more sidelink positioning anchor devices being less than one or more distance measurements of other sidelink positioning anchor devices of the plurality of sidelink positioning anchor devices.

10. The method of claim 1 , wherein the one or more sidelink positioning anchor devices have line of sight to the UE.

11. The method of claim 1 , wherein the anchor device capability associated with each of the plurality of sidelink positioning anchor devices includes at least one of a number of receiving antennas, a maximum transmission bandwidth, a maximum number of component carriers, and a transmission power class associated with each of the plurality of sidelink positioning anchor devices.

12. The method of claim 1 , wherein the anchor device category associated with each of the plurality of sidelink positioning anchor devices includes at least one of a stationary road side unit (RSU) category, a vehicle on-board unit (OBU) category, and a pedestrian UE category.

13. The method of claim 1 , further comprising:

transmitting the one or more parameters to a network entity; and

receiving an indication of the one or more sidelink positioning anchor devices from the network entity.

14. The method of claim 1 , further comprising:

determining, based on the association with the one or more sidelink positioning anchor devices, at least one of a relative position corresponding to the UE and an absolute position corresponding to the UE.

15. A wireless communication device for wireless communication, comprising:

one or more memories; and

one or more processors coupled to the one or more memories and configured to:

identify a plurality of sidelink positioning anchor devices; and

based on one or more parameters associated with each of the plurality of sidelink positioning anchor devices, associate the wireless communication device with one or more sidelink positioning anchor devices from the plurality of sidelink positioning anchor devices, wherein the one or more parameters include at least one of a reference signal received power (RSRP) measurement associated with each of the plurality of sidelink positioning anchor devices, a distance measurement associated with each of the plurality of sidelink positioning anchor devices, a line of sight measurement associated with each of the plurality of sidelink positioning anchor devices, an anchor device capability associated with each of the plurality of sidelink positioning anchor devices, and an anchor device category associated with each of the plurality of sidelink positioning anchor devices.

16. The wireless communication device of claim 15 , wherein the at least one or more processors is further configured to:

determine the one or more parameters associated with each of the plurality of sidelink positioning anchor devices.

17. The wireless communication device of claim 15 , wherein the at least one or more processors is further configured to:

receive, from the plurality of sidelink positioning anchor devices, the one or more parameters associated with each of the plurality of sidelink positioning anchor devices.

18. The wireless communication device of claim 15 , wherein the RSRP measurement associated with each of the plurality of sidelink positioning anchor devices corresponds to at least one of a demodulation reference signal (DMRS), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), and a positioning reference signal (PRS).

19. The wireless communication device of claim 18 , wherein the at least one processor is further configured to:

associate the wireless communication device with the one or more sidelink positioning anchor devices based on one or more RSRP measurements of the one or more sidelink positioning anchor devices being greater than one or more RSRP measurements of other sidelink positioning anchor devices of the plurality of sidelink positioning anchor devices.

20. The wireless communication device of claim 15 , wherein the at least one processor is further configured to:

associate the wireless communication device with the one or more sidelink positioning anchor devices from the plurality of sidelink positioning anchor devices based on one or more RSRP measurements of the one or more sidelink positioning anchor devices being greater than an RSRP measurement threshold value.

21. The wireless communication device of claim 15 , wherein the distance measurement associated with each of the plurality of sidelink positioning anchor devices is based on at least one of a geolocation associated with each of the plurality of sidelink positioning anchor devices and a zone identifier associated with each of the plurality of sidelink positioning anchor devices.

22. The wireless communication device of claim 15 , wherein the at least one processor is further configured to:

associate the wireless communication device with the one or more sidelink positioning anchor devices based on one or more distance measurements of the one or more sidelink positioning anchor devices being less than one or more distance measurements of other sidelink positioning anchor devices of the plurality of sidelink positioning anchor devices.

23. The wireless communication device of claim 15 , wherein the anchor device capability associated with each of the plurality of sidelink positioning anchor devices includes at least one of a number of receiving antennas, a maximum transmission bandwidth, a maximum number of component carriers, and a transmission power class associated with each of the plurality of sidelink positioning anchor devices.

24. The wireless communication device of claim 15 , wherein the at least one processor is further configured to:

transmit the one or more parameters to a network entity; and

receive an indication of the one or more sidelink positioning anchor devices from the network entity.

25. A method for wireless communications, comprising:

receiving, by a network entity from a user equipment (UE), one or more parameters corresponding to a plurality of sidelink positioning anchor devices;

selecting, based on the one or more parameters, a subset of sidelink positioning anchor devices from the plurality of sidelink positioning anchor devices, wherein the subset of sidelink positioning anchor devices are associated with the UE for sidelink positioning, wherein the one or more parameters include at least one of a reference signal received power (RSRP) measurement associated with each of the plurality of sidelink positioning anchor devices, a distance measurement associated with each of the plurality of sidelink positioning anchor devices, a line of sight measurement associated with each of the plurality of sidelink positioning anchor devices, an anchor device capability associated with each of the plurality of sidelink positioning anchor devices, an anchor device category associated with each of the plurality of sidelink positioning anchor devices, an identifier associated with each of the plurality of sidelink positioning anchor devices, an identifier associated with the UE, and a timestamp indicating a time associated with measurement of the one or more parameters; and

transmitting an indication of the subset of sidelink positioning anchor devices to the UE.

26. A base station for wireless communication, comprising:

one ore more memories; and

one or more processors coupled to the one or more memories and configured to:

receive, from a user equipment (UE), one or more parameters corresponding to a plurality of sidelink positioning anchor devices, wherein the one or more parameters include at least one of a reference signal received power (RSRP) measurement associated with each of the plurality of sidelink positioning anchor devices, a distance measurement associated with each of the plurality of sidelink positioning anchor devices, a line of sight measurement associated with each of the plurality of sidelink positioning anchor devices, an anchor device capability associated with each of the plurality of sidelink positioning anchor devices, an anchor device category associated with each of the plurality of sidelink positioning anchor devices, an identifier associated with each of the plurality of sidelink positioning anchor devices, an identifier associated with the UE, and a timestamp indicating a time associated with measurement of the one or more parameters;

select, based on the one or more parameters, a subset of sidelink positioning anchor devices from the plurality of sidelink positioning anchor devices, wherein the subset of sidelink positioning anchor devices are associated with the UE for sidelink positioning; and

transmit an indication of the subset of sidelink positioning anchor devices to the UE.