Over-the-air interference coordination

1. A method for wireless communications at a user equipment (UE), comprising:

identifying, by the UE in communication with a serving base station, that the UE is a potential victim of interference from a neighboring base station;

transmitting an interference coordination message to the neighboring base station based at least in part on the identifying, the interference coordination message requesting modification of one or more transmission parameters at the neighboring base station; and

communicating with the serving base station after transmitting the interference coordination message.

2. The method of claim 1 , further comprising:

monitoring for signaling from at least one of the serving base station or the neighboring base station using a receive beam of the UE;

receiving signaling from both the serving base station and the neighboring base station based at least in part on the monitoring; and

identifying that the UE is the potential victim of interference from the neighboring base station based at least in part on the receiving.

3. The method of claim 1 , further comprising:

configuring the UE as a potential victim UE according to a set of UE receive beams, a set of serving base station transmit beams, and a set of neighboring base station transmit beams based at least in part on the identifying.

4. The method of claim 1 , further comprising:

receiving an indication from the serving base station to transmit the interference coordination message to the neighboring base station, wherein the UE is identified as the potential victim based at least in part on the indication; and

transmitting the interference coordination message to the neighboring base station in a direction based at least in part on the indication.

5. The method of claim 1 , further comprising:

monitoring for signaling from a plurality of base stations via a set of receive beams, the plurality of base stations including the serving base station and the neighboring base station; and

determining that the UE is a potential victim UE based at least in part on the monitoring.

6. The method of claim 5 , further comprising:

receiving a first signal from the serving base station via a first receive beam of the set of receive beams based at least in part on the monitoring, the first signal associated with a first transmission configuration indicator (TCI) state or a first synchronization signal block (SSB) of the serving base station;

receiving a second signal from the neighboring base station via the first receive beam of the set of receive beams based at least in part on the monitoring, the second signal associated with a second TCI state or a second SSB of the neighboring base station; and

determining that the neighboring base station is a potential interfering base station based at least in part on receiving the first and second signals.

7. The method of claim 6 , further comprising:

transmitting a report to the serving base station based at least in part on determining that the neighboring base station is the potential interfering base station, the report indicating information related to the neighboring base station, the first TCI state, the second TCI state, the first SSB, the second SSB, the first receive beam, or any combination thereof.

8. The method of claim 1 , further comprising:

receiving a downlink control message from the serving base station, the downlink control message indicating a transmission configuration indicator (TCI) state for a downlink shared channel transmission; and

transmitting the interference coordination message to the neighboring base station before the downlink shared channel transmission.

9. The method of claim 8 , wherein the downlink control message indicates resources for the interference coordination message and information to include in the interference coordination message.

10. The method of claim 8 , further comprising:

identifying a gap between transmission of the interference coordination message and the downlink shared channel transmission; and

monitoring resources allocated for the downlink shared channel transmission according to the gap following transmission of the interference coordination message.

11. The method of claim 1 , further comprising:

including an indication of UE priority in the interference coordination message.

12. A method for wireless communications at a serving base station, comprising:

identifying that a user equipment (UE) in communication with the serving base station is a potential victim of interference from a neighboring base station; and

transmitting a downlink control message to the UE indicating that the UE is a potential victim UE based at least in part on the identifying.

13. The method of claim 12 , further comprising:

determining that the neighboring base station is a potential interfering base station based at least in part on the identifying; and

transmitting a backhaul message to the neighboring base station to configure the neighboring base station as the potential interfering base station based at least in part on the determining.

14. The method of claim 12 , further comprising:

identifying a set of beam pairs associated with the UE, the serving base station, and the neighboring base station; and

identifying that the UE is the potential victim of interference from the neighboring base station based at least in part on the set of beam pairs.

15. The method of claim 12 , further comprising:

receiving a report from the UE, the report indicating information related to the neighboring base station, a first transmission configuration indicator (TCI) state of a first signal associated with the serving base station, a first synchronization signal block (SSB) of the first signal associated with the serving base station, a second TCI state of a second signal associated with the neighboring base station, a second SSB of the second signal associated with the neighboring base station, a receive beam of the UE, or any combination thereof; and

identifying that the UE is the potential victim of interference from the neighboring base station based at least in part on the report.

16. The method of claim 15 , further comprising:

transmitting a backhaul message to the neighboring base station indicating that the neighboring base station is a potential interfering base station based at least in part on the report, wherein the backhaul message comprises an indication of the potential victim UE and information related to the second TCI state, the second SSB, the serving base station, a transmission beam associated with the second TCI state or the second SSB, or any combination thereof.

17. The method of claim 12 , wherein the downlink control message indicates a transmission configuration indicator (TCI) state for a downlink shared channel transmission to the UE, resources for an interference coordination message from the UE, information to include in the interference coordination message, an indication for the UE to transmit the interference coordination message to the neighboring base station, or any combination thereof.

18. The method of claim 17 , wherein the information to include in the interference coordination message comprises a set of time-frequency resources allocated for transmission of the interference coordination message, transmission timing for the interference coordination message, an uplink transmission beam index for the interference coordination message, or any combination thereof.

19. The method of claim 12 , further comprising:

transmitting an indication of a gap to the UE via one of radio resource control (RRC) signaling, a media access control (MAC) control element (MAC-CE), or downlink control information (DCI), wherein the gap is common to the serving base station and the neighboring base station and indicates a delay between transmission of an interference coordination message and a downlink shared channel transmission; and

transmitting a backhaul message to the neighboring base station indicating the gap.

20. The method of claim 12 , wherein a gap between an interference coordination message from the UE and a downlink shared channel transmission from the neighboring base station is a default value configured at the serving base station, the UE, and the neighboring base station.

21. A method for wireless communications at a neighboring base station, comprising:

identifying that the neighboring base station is a potential interfering base station for a user equipment (UE) in communication with a serving base station;

monitoring for an interference coordination message from the UE based at least in part on the identifying;

identifying a downlink shared channel transmission for a second UE in communication with the neighboring base station; and

determining whether to transmit the downlink shared channel transmission based at least in part on the monitoring.

22. The method of claim 21 , further comprising:

receiving a backhaul message from the serving base station to configure the neighboring base station as the potential interfering base station based at least in part on the determining; and

configuring the neighboring base station as the potential interfering base station based at least in part on the backhaul message.

23. The method of claim 21 , further comprising:

receiving a backhaul message from the serving base station indicating the UE as a potential victim UE, the backhaul message comprising an indication of an interfering transmission beam for the neighboring base station, an interfering transmission configuration indicator (TCI) state for the neighboring base station, an interfering synchronization signal block (SSB) for the neighboring base station, or any combination thereof.

24. The method of claim 23 , further comprising:

monitoring for the interference coordination message using the interfering transmission beam; and

transmitting the downlink shared channel transmission to the second UE based at least in part on an absence of the interference coordination message using the interfering transmission beam during the monitoring.

25. The method of claim 23 , further comprising:

monitoring for the interference coordination message using the interfering transmission beam; and

refraining from transmitting the downlink shared channel transmission to the second UE based at least in part on detecting the interference coordination message using the interfering transmission beam during the monitoring.

26. The method of claim 21 , further comprising:

receiving an indication of a gap from the serving base station, wherein the gap is common to the serving base station and the neighboring base station and indicates a delay between transmission of the interference coordination message and the downlink shared channel transmission for the second UE in communication with the neighboring base station.

27. The method of claim 21 , further comprising:

identifying a gap that indicates a delay between transmission of the interference coordination message and the downlink shared channel transmission for the second UE in communication with the neighboring base station, wherein the gap is a fixed value preconfigured at the serving base station, the UE, and the neighboring base station.

28. The method of claim 21 , further comprising:

receiving the interference coordination message from the UE based at least in part on the monitoring; and

refraining from transmitting the downlink shared channel transmission to the second UE in communication with the neighboring base station based at least in part on receiving the interference coordination message.

29. The method of claim 21 , further comprising:

receiving the interference coordination message from the UE based at least in part on the monitoring; and

transmitting the downlink shared channel transmission to the second UE in communication with the neighboring base station based at least in part on a priority level of the UE being lower than the neighboring base station.

30. An apparatus for wireless communications at a user equipment (UE), comprising:

a processor,

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

identify, by the UE in communication with a serving base station, that the UE is a potential victim of interference from a neighboring base station;

transmit an interference coordination message to the neighboring base station based at least in part on the identifying, the interference coordination message requesting modification of one or more transmission parameters at the neighboring base station; and

communicate with the serving base station after transmitting the interference coordination message.

31. The apparatus of claim 30 , wherein the instructions are further executable by the processor to cause the apparatus to:

monitor for signaling from at least one of the serving base station or the neighboring base station using a receive beam of the UE;

receive signaling from both the serving base station and the neighboring base station based at least in part on the monitoring; and

identify that the UE is the potential victim of interference from the neighboring base station based at least in part on the receiving.

32. The apparatus of claim 30 , wherein the instructions are further executable by the processor to cause the apparatus to:

configure the UE as a potential victim UE according to a set of UE receive beams, a set of serving base station transmit beams, and a set of neighboring base station transmit beams based at least in part on the identifying.

33. The apparatus of claim 30 , wherein the instructions are further executable by the processor to cause the apparatus to:

receive an indication from the serving base station to transmit the interference coordination message to the neighboring base station, wherein the UE is identified as the potential victim based at least in part on the indication; and

transmit the interference coordination message to the neighboring base station in a direction based at least in part on the indication.

34. The apparatus of claim 30 , wherein the instructions are further executable by the processor to cause the apparatus to:

monitor for signaling from a plurality of base stations via a set of receive beams, the plurality of base stations including the serving base station and the neighboring base station; and

determine that the UE is a potential victim UE based at least in part on the monitoring.

35. An apparatus for wireless communications at a serving base station, comprising:

a processor;

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

identify that a user equipment (UE) in communication with the serving base station is a potential victim of interference from a neighboring base station; and

transmit a downlink control message to the UE indicating that the UE is a potential victim UE based at least in part on the identifying.

36. The apparatus of claim 35 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine that the neighboring base station is a potential interfering base station based at least in part on the identifying; and

transmit a backhaul message to the neighboring base station to configure the neighboring base station as the potential interfering base station based at least in part on the determining.

37. The apparatus of claim 35 , wherein the instructions are further executable by the processor to cause the apparatus to:

identify a set of beam pairs associated with the UE, the serving base station, and the neighboring base station; and

identify that the UE is the potential victim of interference from the neighboring base station based at least in part on the set of beam pairs.

38. The apparatus of claim 35 , wherein the instructions are further executable by the processor to cause the apparatus to:

receive a report from the UE, the report indicating information related to the neighboring base station, a first transmission configuration indicator (TCI) state of a first signal associated with the serving base station, a first synchronization signal block (SSB) of the first signal associated with the serving base station, a second TCI state of a second signal associated with the neighboring base station, a second SSB of the second signal associated with the neighboring base station, a receive beam of the UE, or any combination thereof; and

identify that the UE is the potential victim of interference from the neighboring base station based at least in part on the report.

39. The apparatus of claim 38 , wherein the instructions are further executable by the processor to cause the apparatus to:

transmit a backhaul message to the neighboring base station indicating that the neighboring base station is a potential interfering base station based at least in part on the report, wherein the backhaul message comprises an indication of the potential victim UE and information related to the second TCI state, the second SSB, the serving base station, a transmission beam associated with the second TCI state or the second SSB, or any combination thereof.

40. An apparatus for wireless communications at a neighboring base station, comprising:

a processor;

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

identify that the neighboring base station is a potential interfering base station for a user equipment (UE) in communication with a serving base station;

monitor for an interference coordination message from the UE based at least in part on the identifying;

identify a downlink shared channel transmission for a second UE in communication with the neighboring base station; and

determine whether to transmit the downlink shared channel transmission based at least in part on the monitoring.

41. The apparatus of claim 40 , wherein the instructions are further executable by the processor to cause the apparatus to:

receive a backhaul message from the serving base station to configure the neighboring base station as the potential interfering base station based at least in part on the determining; and

configure the neighboring base station as the potential interfering base station based at least in part on the backhaul message.

42. The apparatus of claim 40 , wherein the instructions are further executable by the processor to cause the apparatus to:

receive a backhaul message from the serving base station indicating the UE as a potential victim UE, the backhaul message comprising an indication of an interfering transmission beam for the neighboring base station, an interfering transmission configuration indicator (TCI) state for the neighboring base station, an interfering synchronization signal block (SSB) for the neighboring base station, or any combination thereof.

43. The apparatus of claim 42 , wherein the instructions are further executable by the processor to cause the apparatus to:

monitor for the interference coordination message using the interfering transmission beam; and

transmit the downlink shared channel transmission to the second UE based at least in part on an absence of the interference coordination message using the interfering transmission beam during the monitoring.

44. The apparatus of claim 42 , wherein the instructions are further executable by the processor to cause the apparatus to:

monitor for the interference coordination message using the interfering transmission beam; and

refrain from transmitting the downlink shared channel transmission to the second UE based at least in part on detecting the interference coordination message using the interfering transmission beam during the monitoring.