Cross-link interference reference signal resource pool

1 . An apparatus for wireless communication, comprising:

at least one transceiver;

at least one memory comprising computer-executable instructions; and

one or more processors configured to execute the computer-executable instructions to cause the apparatus to:

select one or more resources from at least one resource pool comprising a plurality of resources for cross-link interference (CLI) reference signals (RS); and

transmit, via the at least one transceiver, or monitor for, via the at least one transceiver, one or more CLI-RS on the one or more resources, wherein:

the selection of the one or more resources from the at least one resource pool comprises selecting multiple resources from the at least one resource pool; and

the transmission comprises at least one of:

repeating the CLI-RS on the multiple resources,

transmitting the CLI-RS via different transmit ports on the multiple resources, or

transmitting the CLI-RS using different transmit power levels on the multiple resources.

2 . The apparatus of claim 1 , wherein the plurality of resources are continuous in time and frequency.

3 . The apparatus of claim 1 , wherein at least one of:

the at least one resource pool is periodic; or

the resource pool is configured with at least one of a period or an offset.

4 . The apparatus of claim 1 , wherein the one or more resources are selected from different resource pools of the at least one resource pool and at different times.

5 . The apparatus of claim 1 , wherein the selection of the one or more resources from the at least one resource pool comprises selecting at least one of: one or more symbols, a frequency comb interlace, or a code.

6 . The apparatus of claim 1 , wherein the transmission comprises transmitting the one or more CLI-RS on the one or more resources.

7 . The apparatus of claim 1 , wherein:

each of the one or more CLI-RS is transmitted as a sounding reference signal (SRS) waveform; or

the monitoring comprises monitoring for an SRS waveform as the one or more CLI-RS.

8 . The apparatus of claim 1 , wherein the one or more processors are further configured to execute the computer-executable instructions to cause the apparatus to receive, via the at least one transceiver, signaling indicating the one or more resources from the at least one resource pool, wherein the selection of the one or more resources from the at least one resource pool comprises selecting the indicated one or more resources from the at least one resource pool.

9 . The apparatus of claim 8 , wherein the signaling further indicates at least one of: one or more symbols, one or more frequency comb interlaces, one or more code index, or one or one or more cyclic shift index from the at least one resource pool.

10 . The apparatus of claim 1 , wherein the one or more processors are further configured to execute the computer-executable instructions to cause the apparatus to receive, via the at least one transceiver, signaling configuring the apparatus with a resource hopping pattern, wherein transmitting or monitoring comprises hopping resources for transmitting or monitoring for the one or more CLI-RS.

11 . The apparatus of claim 1 , wherein the selection of the one or more resources from the at least one resource pool comprises selecting the one or more resources from the at least one resource pool based on a resource selection pattern.

12 . The apparatus of claim 11 , wherein the selection of the one or more resources from the at least one resource pool based on the configured resource selection pattern comprises randomly selecting the one or more resources from the at least one resource pool based on a seed.

13 . The apparatus of claim 11 , wherein the one or more processors are further configured to execute the computer-executable instructions to cause the apparatus to:

receive, via the at least one transceiver, signaling indicating the resource selection pattern for selecting the one or more resources from the at least one resource pool.

14 . The apparatus of claim 1 , wherein the one or more processors are further configured to execute the computer-executable instructions to cause the apparatus to receive, via the at least one transceiver, signaling indicating a subset of the plurality of resources of the at least one resource pool, wherein the one or more resources are selected from the subset of resources.

15 . The apparatus of claim 1 , the selection comprises:

randomly selecting the one or more resources from the at least one resource pool; or

selecting the one or more resources from the at least one resource pool based on a preference of the apparatus.

16 . The apparatus of claim 1 , wherein the selection of the one or more resources from the at least one resource pool comprises selecting first one or more resources from a first resource pool for transmitting or monitoring for first one or more CLI-RS and selecting second one or more resources from a second resource pool for transmitting or monitoring for second one or more CLI-RS, the second resource pool being different from the first resource pool.

17 . The apparatus of claim 1 , wherein the transmission or the monitoring comprises monitoring the one or more CLI-RS on the one or more resources.

18 . The apparatus of claim 17 , wherein the one or more processors are further configured to execute the computer-executable instructions to cause the apparatus to:

measure the one or more CLI-RS; and

report, to a network entity via the at least one transceiver, the one or more measurements.

19 . The apparatus of claim 18 , wherein the report comprises only measurements of a dominant interferer to the network entity.

20 . The apparatus of claim 1 , wherein the selection of the one or more resources from the at least one resource pool comprises:

selecting a first one or more resources from the at least one resource pool for transmitting first one or more CLI-RS; and

selecting a second one or more resources from the at least one resource pool for monitoring for second one or more CLI-RS.

21 . The apparatus of claim 20 , wherein the one or more processors are further configured to execute the computer-executable instructions to cause the apparatus to monitor, via the at least one transceiver, for the second one or more CLI-RS in resources of the first one or more resources unused by the UE for transmitting the first one or more CLI-RS.

22 . The apparatus of claim 21 , wherein the first one or more resources and the second one or more resources overlap, further comprising determining to use the overlapping resources for transmitting or for monitoring CLI-RS based on a priority or a rule.

23 . The apparatus of claim 22 , wherein the determination to use the overlapping resources for transmitting CLI-RS or for monitoring CLI-RS based on the priority comprises prioritizing resources configured by a network entity for transmitting or monitoring for CLI-RS over resources decided by the UE for transmitting or monitoring CLI-RS.

24 . The apparatus of claim 1 , wherein the apparatus is configured to operate as a user equipment (UE).

25 . A method for wireless communication by a user equipment (UE), the method comprising:

selecting one or more resources from at least one resource pool comprising a plurality of resources for cross-link interference (CLI) reference signals (RS); and

transmitting or monitoring for one or more CLI-RS on the one or more resources, wherein:

the selection of the one or more resources from the at least one resource pool comprises selecting multiple resources from the at least one resource pool; and

the transmission comprises at least one of:

repeating the CLI-RS on the multiple resources,

transmitting the CLI-RS via different transmit ports on the multiple resources, or

transmitting the CLI-RS using different transmit power levels on the multiple resources.

26 . An apparatus for wireless communication, comprising:

at least one transceiver;

at least one memory comprising computer-executable instructions; and

one or more processors configured to execute the computer-executable instructions to cause the apparatus to:

configure one or more user equipments (UEs) with at least one resource pool comprising a plurality of resources for at least one of: transmitting or monitoring for one or more cross-link interference (CLI) reference signals (RS); and

receive, via the at least one transceiver, a CLI measurement report from at least one of the one or more UEs, wherein:

the configuration configures the one or more UEs to select multiple resources from the at least one resource pool for at least one of: repeating the CLI-RS on the multiple resources, transmitting the CLI-RS via different transmit ports on the multiple resources, or transmitting the CLI-RS using different transmit power levels on the multiple resources.

27 . The apparatus of claim 26 , wherein the plurality of resources are continuous in time and frequency.

28 . The apparatus of claim 26 , wherein at least one of:

the at least one resource pool is periodic; or

the resource pool is configured with at least one of a period or an offset.

29 . The apparatus of claim 26 , wherein the apparatus is configured to operate as a network entity.