Default spatial relation for SRS/PUCCH

1. A method of wireless communication at a user equipment (UE), comprising:

determining, for a component carrier (CC), an active transmission configuration indicator (TCI) state of at least one of a control resource set (CORESET) of a physical downlink control channel (PDCCH) when the CORESET is configured on the CC or a physical downlink shared channel (PDSCH);

determining, based on the determined active TCI state, a default beam on the CC for transmitting at least one of a physical uplink control channel (PUCCH) or sounding reference signals (SRS), wherein when the CORESET is configured on the CC, the default beam for at least one of the PUCCH or the SRS is determined based on the determined active TCI state of the CORESET of the PDCCH, wherein when the CORESET is not configured on the CC, the default beam for at least one of the PUCCH or the SRS is determined based on the determined active TCI state of the PDSCH; and

transmitting at least one of the PUCCH or the SRS through the determined default beam on the CC.

2. The method of claim 1 , wherein the determining the active TCI state comprises determining whether the CORESET is configured on the CC, wherein when the CORESET is configured on the CC, the determined active TCI state is one active TCI state of active TCI states of the CORESET of the PDCCH.

3. The method of claim 2 , wherein when the CORESET is not configured on the CC, the determined active TCI state is one active TCI state of active TCI states of the PDSCH.

4. The method of claim 3 , wherein the determined active TCI state of the PDSCH is the TCI state with a lowest TCI state identifier of the active TCI states of the PDSCH, or the determined active TCI state is indicated by a medium access control (MAC) control element (CE).

5. The method of claim 1 , wherein the determined active TCI state is one active TCI state of active TCI states of the PDSCH, and the default beam for at least one of the PUCCH or the SRS is determined based on the determined active TCI state of the PDSCH.

6. The method of claim 5 , wherein the determined active TCI state of the PDSCH is the TCI state with a lowest TCI state identifier of the active TCI states of the PDSCH, or the determined active TCI state is indicated by a medium access control (MAC) control element (CE).

7. The method of claim 1 , wherein the UE supports a first active TCI state and a second active TCI state for the PDCCH, where one of the first TCI state or the second TCI state is also for the PDSCH, and wherein the determined active TCI state is one of the first TCI state or the second TCI state that is also for the PDSCH.

8. The method of claim 7 , wherein the UE determines the active TCI state based on an active TCI state for a CORESET of the PDCCH.

9. The method of claim 7 , wherein the UE determines the active TCI state based on an indication through a medium access control (MAC) control element (CE).

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

a memory; and

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

determine, for a component carrier (CC), an active transmission configuration indicator (TCI) state of at least one of a control resource set (CORESET) of a physical downlink control channel (PDCCH) when the CORESET is configured on the CC or a physical downlink shared channel (PDSCH);

determine, based on the determined active TCI state, a default beam on the CC for transmitting at least one of a physical uplink control channel (PUCCH) or sounding reference signals (SRS), wherein when the CORESET is configured on the CC, the default beam for at least one of the PUCCH or the SRS is determined based on the determined active TCI state of the CORESET of the PDCCH, wherein when the CORESET is not configured on the CC, the default beam for at least one of the PUCCH or the SRS is determined based on the determined active TCI state of the PDSCH; and

transmit at least one of the PUCCH or the SRS through the determined default beam on the CC.

11. The apparatus of claim 10 , wherein to determine the active TCI state, the at least one processor is configured to determine whether the CORESET is configured on the CC, wherein when the CORESET is configured on the CC, the determined active TCI state is one active TCI state of active TCI states of the CORESET of the PDCCH.

12. The apparatus of claim 11 , wherein when the CORESET is not configured on the CC, the determined active TCI state is one active TCI state of active TCI states of the PDSCH.

13. The apparatus of claim 12 , wherein the determined active TCI state of the PDSCH is the TCI state with a lowest TCI state identifier of the active TCI states of the PDSCH, or the determined active TCI state is indicated by a medium access control (MAC) control element (CE).

14. The apparatus of claim 10 , wherein the determined active TCI state is one active TCI state of active TCI states of the PDSCH, and the default beam for at least one of the PUCCH or the SRS is determined based on the determined active TCI state of the PDSCH.

15. The apparatus of claim 14 , wherein the determined active TCI state of the PDSCH is the TCI state with a lowest TCI state identifier of the active TCI states of the PDSCH, or the determined active TCI state is indicated by a medium access control (MAC) control element (CE).

16. The apparatus of claim 10 , wherein the UE supports a first active TCI state and a second active TCI state for the PDCCH, where one of the first TCI state or the second TCI state is also for the PDSCH, and wherein the determined active TCI state is one of the first TCI state or the second TCI state that is also for the PDSCH.

17. The apparatus of claim 16 , wherein the UE determines the active TCI state based on an active TCI state for a CORESET of the PDCCH.

18. The apparatus of claim 16 , wherein the UE determines the active TCI state based on an indication through a medium access control (MAC) control element (CE).

19. An apparatus of wireless communication at a user equipment (UE), comprising:

means for determining, for a component carrier (CC), an active transmission configuration indicator (TCI) state of at least one of a control resource set (CORESET) of a physical downlink control channel (PDCCH) when the CORESET is configured on the CC or a physical downlink shared channel (PDSCH);

means for determining, based on the determined active TCI state, a default beam on the CC for transmitting at least one of a physical uplink control channel (PUCCH) or sounding reference signals (SRS), wherein when the CORESET is configured on the CC, the default beam for at least one of the PUCCH or the SRS is determined based on the determined active TCI state of the CORESET of the PDCCH, wherein when the CORESET is not configured on the CC, the default beam for at least one of the PUCCH or the SRS is determined based on the determined active TCI state of the PDSCH; and

means for transmitting at least one of the PUCCH or the SRS through the determined default beam on the CC.

20. The apparatus of claim 19 , wherein the means for determining the active TCI state is configured to determine whether the CORESET is configured on the CC, wherein when the CORESET is configured on the CC, the determined active TCI state is one active TCI state of active TCI states of the CORESET of the PDCCH.

21. The apparatus of claim 20 , wherein when the CORESET is not configured on the CC, the determined active TCI state is one active TCI state of active TCI states of the PDSCH.

22. The apparatus of claim 21 , wherein the determined active TCI state of the PDSCH is the TCI state with a lowest TCI state identifier of the active TCI states of the PDSCH, or the determined active TCI state is indicated by a medium access control (MAC) control element (CE).

23. The apparatus of claim 19 , wherein the determined active TCI state is one active TCI state of active TCI states of the PDSCH, and the default beam for at least one of the PUCCH or the SRS is determined based on the determined active TCI state of the PDSCH.

24. The apparatus of claim 23 , wherein the determined active TCI state of the PDSCH is the TCI state with a lowest TCI state identifier of the active TCI states of the PDSCH, or the determined active TCI state is indicated by a medium access control (MAC) control element (CE).

25. The apparatus of claim 19 , wherein the UE supports a first active TCI state and a second active TCI state for the PDCCH, where one of the first TCI state or the second TCI state is also for the PDSCH, and wherein the determined active TCI state is one of the first TCI state or the second TCI state that is also for the PDSCH.

26. The apparatus of claim 25 , wherein the UE determines the active TCI state based on an active TCI state for a CORESET of the PDCCH.

27. The apparatus of claim 25 , wherein the UE determines the active TCI state based on an indication through a medium access control (MAC) control element (CE).

28. A non-transitory computer-readable medium storing computer executable code at a user equipment (UE), the code when executed by a processor cause the processor to:

determine, for a component carrier (CC), an active transmission configuration indicator (TCI) state of at least one of a control resource set (CORESET) of a physical downlink control channel (PDCCH) when the CORESET is configured on the CC or a physical downlink shared channel (PDSCH);

determine, based on the determined active TCI state, a default beam on the CC for transmitting at least one of a physical uplink control channel (PUCCH) or sounding reference signals (SRS), wherein when the CORESET is configured on the CC, the default beam for at least one of the PUCCH or the SRS is determined based on the determined active TCI state of the CORESET of the PDCCH, wherein when the CORESET is not configured on the CC, the default beam for at least one of the PUCCH or the SRS is determined based on the determined active TCI state of the PDSCH; and

transmit at least one of the PUCCH or the SRS through the determined default beam on the CC.