Configurable repeaters

1. An apparatus for wireless communication at a repeater unit (RU), comprising:

memory; and

at least one processor coupled to the memory and configured to:

receive a plurality of sets of RU configuration parameters, wherein each set of RU configuration parameters comprises a beamforming configuration for transmission and reception;

receive an indication of a first set of RU configuration parameters in the plurality of sets of RU configuration parameters comprising a first beamforming configuration indicating a first beam to use for reception from a first wireless device and a second beam to use for transmission to a second wireless device; and

perform at least one repeating operation based on the first set of RU configuration parameters, the at least one repeating operation being performed to facilitate a communication between the first wireless device and the second wireless device.

2. The apparatus of claim 1 , wherein the first wireless device is a base station and the second wireless device is a user equipment (UE), and wherein to receive the plurality of sets of RU configuration parameters, the at least one processor is configured to receive the plurality of sets of RU configuration parameters from the first wireless device, and to receive the indication of the first set of RU configuration parameters, the at least one processor is configured to receive the indication of the first set of RU configuration parameters from one of the first wireless device or the second wireless device.

3. The apparatus of claim 1 , wherein the first wireless device is a first user equipment (UE) and the second wireless device is a second UE, and wherein to receive the plurality of sets of RU configuration parameters, the at least one processor is configured to receive the plurality of sets of RU configuration parameters from one of the first UE or a base station, and to receive the indication of the first set of RU configuration parameters, the at least one processor is configured to receive the indication of the first set of RU configuration parameters from one of the first UE, the second UE or the base station.

4. The apparatus of claim 1 , wherein to receive the plurality of sets of RU configuration parameters, the at least one processor is configured to receive the plurality of sets of RU configuration parameters via one of a radio resource control (RRC) message or a medium access control (MAC) control element (CE) (MAC-CE).

5. The apparatus of claim 1 , wherein to receive the indication of the first set of RU configuration parameters, the at least one processor is configured to receive the indication of the first set of RU configuration parameters is received via one of downlink control information (DCI), uplink control information (UCI), or sidelink control information (SCI).

6. The apparatus of claim 1 , wherein:

each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with a beam index and the indication of the first set of RU configuration parameters comprises a beam index value associated with the first set of RU configuration parameters; or

each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with a parameter set index and the indication of the first set of RU configuration parameters comprises a parameter set index value associated with the first set of RU configuration parameters.

7. The apparatus of claim 1 , wherein each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with a user equipment (UE) index and the indication comprises a UE index value associated with the first set of RU configuration parameters, the UE index value being one of a radio network temporary identifier (RNTI) associated with a UE and extracted by the RU from a physical downlink control channel (PDCCH) transmission or a local UE index value that is configured for identifying UEs at the RU.

8. The apparatus of claim 1 , wherein each set of RU configuration parameters comprises a time-domain resource allocation associated with the beamforming configuration.

9. The apparatus of claim 1 , wherein each set of RU configuration parameters comprises one or more of a transmission power configuration, an operating bandwidth, an On-Off schedule indicating times at which the RU may be inactive, a directionality indication that indicates that the first set of RU configuration parameters applies to one or more of a downlink transmission or an uplink transmission or a sidelink transmission, a timing reference indication that indicates one or more timing parameters associated with repeating transmissions received at the RU.

10. The apparatus of claim 1 , further comprising a transceiver coupled to the at least one processor, wherein the plurality of sets of RU configuration parameters is one of a first plurality of sets of repeater-unit-specific configuration parameters, a second plurality of sets of cell-specific RU configuration parameters, or a third plurality of repeater-unit-group configuration parameters.

11. An apparatus for wireless communication at a first user equipment (UE), comprising:

memory; and

at least one processor coupled to the memory and configured to:

receive, from at least one of a base station, a repeater unit (RU), or a second UE, a plurality of sets of RU configuration parameters associated with one of a beam index, a UE index, or a parameter set index, wherein each set of RU configuration parameters comprises a beamforming configuration for transmission and reception; and

communicate, via the RU, with one of the second UE or the base station based on a first set of RU configuration parameters in the plurality of sets of RU configuration parameters, wherein the first set of RU configuration parameters comprises a first beamforming configuration indicating a beam to use for transmission from the first UE to the RU, the RU being associated with the plurality of sets of RU configuration parameters.

12. The apparatus of claim 11 , wherein the at least one processor is further configured to:

transmit, to at least one of the base station, the RU, or the second UE, an indication of the first set of RU configuration parameters.

13. The apparatus of claim 12 , wherein to transmit the indication of the first set of RU configuration parameters, the at least one processor is configured to transmit the indication of the first set of RU configuration parameters via sidelink control information (SCI).

14. The apparatus of claim 12 , wherein:

each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with the beam index and the indication of the first set of RU configuration parameters comprises a beam index value associated with the first set of RU configuration parameters; or

each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with the parameter set index and the indication of the first set of RU configuration parameters comprises a parameter set index value associated with the first set of RU configuration parameters.

15. The apparatus of claim 12 , wherein each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with the UE index and the indication of the first set of RU configuration parameters comprises a UE index value associated with the first set of RU configuration parameters, the UE index value being one of a radio network temporary identifier (RNTI) associated with the UE or a local UE index value that identifies the first UE at the RU.

16. The apparatus of claim 11 , wherein the at least one processor is further configured to:

transmit, to the RU, the plurality of sets of RU configuration parameters.

17. The apparatus of claim 11 , further comprising a transceiver coupled to the at least one processor, wherein the at least one processor is further configured to:

receive, from at least one of the base station, the RU, or the second UE, an indication of the first set of RU configuration parameters.

18. An apparatus for wireless communication at a control node, comprising:

memory; and

at least one processor coupled to the memory and configured to:

transmit, to a repeater unit (RU), a plurality of sets of RU configuration parameters, wherein each set of RU configuration parameters comprises a beamforming configuration for transmission and reception; and

transmit, to the RU, an indication of a first set of RU configuration parameters in the plurality of sets of RU configuration parameters for the RU to perform at least one repeating operation associated with facilitating a communication between a first user equipment (UE) and one of the control node or a second wireless device, wherein the first set of RU configuration parameters comprises a first beamforming configuration indicating a first beam to use for reception from the first UE and a second beam to use for transmission to one of the control node or the second wireless device.

19. The apparatus of claim 18 , wherein the control node is a base station and the second wireless device is the base station, and the at least one processor is further configured to:

receive, from the RU, a transmission associated with the first UE.

20. The apparatus of claim 18 , wherein to transmit the plurality of sets of RU configuration parameters, the at least one processor is configured to transmit the plurality of sets of RU configuration parameters via one of a radio resource control (RRC) message or a medium access control (MAC) control element (CE) (MAC-CE).

21. The apparatus of claim 18 , wherein to transmit the indication of the first set of RU configuration parameters, the at least one processor is configured to transmit the indication of the first set of RU configuration parameters via one of downlink control information (DCI) or sidelink control information (SCI).

22. The apparatus of claim 18 , wherein:

each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with a beam index and the indication of the first set of RU configuration parameters comprises a beam index value associated with the first set of RU configuration parameters; or

each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with a parameter set index and the indication of the first set of RU configuration parameters comprises a parameter set index value associated with the first set of RU configuration parameters.

23. The apparatus of claim 18 , wherein each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with a UE index and the indication of the first set of RU configuration parameters comprises a UE index value associated with the first set of RU configuration parameters, the UE index value being one of a radio network temporary identifier (RNTI) associated with the first UE and extracted by the RU from a physical downlink control channel (PDCCH) transmission or a local UE index value that identifies the first UE at the RU.

24. The apparatus of claim 18 , wherein each set of RU configuration parameters comprises a time-domain resource allocation associated with the beamforming configuration.

25. The apparatus of claim 18 , wherein each set of RU configuration parameters comprises one or more of a transmission power configuration, an operating bandwidth, an On-Off schedule indicating times at which the RU may be inactive, a directionality indication that indicates that the first set of RU configuration parameters applies to one or more of a downlink transmission or an uplink transmission, a timing reference indication that indicates one or more timing parameters associated with repeating transmissions received at the RU.

26. The apparatus of claim 18 , further comprising a transceiver coupled to the at least one processor, wherein transmitting the plurality of sets of RU configuration parameters further comprises one of (1) transmitting the plurality of sets of RU configuration parameters to a plurality of RUs in a same cell as the control node, wherein the plurality of sets of RU configuration parameters are a first plurality of sets of cell-specific RU configurations or (2) transmitting the plurality of sets of RU configuration parameters to a group of RUs in a same group as the RU, wherein the plurality of sets of RU configuration parameters are a second plurality of sets of group-specific RU configurations.

27. A method of wireless communication at a repeater unit (RU), comprising:

receiving a plurality of sets of RU configuration parameters, wherein each set of RU configuration parameters comprises a beamforming configuration for transmission and reception;

receiving an indication of a first set of RU configuration parameters in the plurality of sets of RU configuration parameters comprising a first beamforming configuration indicating a first beam to use for reception from a first wireless device and a second beam to use for transmission to a second wireless device; and

performing at least one repeating operation based on the first set of RU configuration parameters, the at least one repeating operation being performed to facilitate a communication between the first wireless device and the second wireless device.

28. The method of claim 27 , wherein:

the first wireless device is a base station and the second wireless device is a user equipment (UE), and wherein the plurality of sets of RU configuration parameters is received from the first wireless device and the indication of the first set of RU configuration parameters is received from one of the first wireless device or the second wireless device; or

the first wireless device is a first UE and the second wireless device is a second UE, and wherein the plurality of sets of RU configuration parameters is received from one of the first UE or the base station and the indication of the first set of RU configuration parameters is received from one of the first UE, the second UE or the base station.

29. The method of claim 27 , wherein:

each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with a beam index and the indication of the first set of RU configuration parameters comprises a beam index value associated with the first set of RU configuration parameters;

each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with a parameter set index and the indication of the first set of RU configuration parameters comprises a parameter set index value associated with the first set of RU configuration parameters; or

each set of RU configuration parameters in the plurality of sets of RU configuration parameters is associated with a user equipment (UE) index and the indication comprises a UE index value associated with the first set of RU configuration parameters, the UE index value being one of a radio network temporary identifier (RNTI) associated with a UE and extracted by the RU from a physical downlink control channel (PDCCH) transmission or a local UE index value that is configured for identifying UEs at the RU.

30. The method of claim 27 , wherein each set of RU configuration parameters comprises one or more of a time-domain resource allocation associated with the beamforming configuration, a transmission power configuration, an operating bandwidth, an On-Off schedule indicating times at which the RU may be inactive, a directionality indication that indicates that the first set of RU configuration parameters applies to one or more of a downlink transmission or an uplink transmission or a sidelink transmission, a timing reference indication that indicates one or more timing parameters associated with repeating transmissions received at the RU.