Configuration enhancement in handover

1. A method for wireless communication, comprising:

receiving, at a user-equipment (UE), a message indicating a first transmission configuration indication (TCI)-state for a serving base station (BS) and a second TCI-state for a target BS;

performing handover to the target BS; and

activating the second TCI-state for the target BS after the handover.

2. The method of claim 1 , wherein the message comprises a radio resource control (RRC) configuration message.

3. The method of claim 1 , wherein the message comprises a medium access control-control element (MAC-CE) or downlink control information (DCI).

4. The method of claim 1 , further comprising:

receiving an indication from the target BS to activate the second TCI-state, wherein activation of the second TCI-state is based on the indication.

5. The method of claim 4 , wherein the indication is received via L1 signaling.

6. The method of claim 1 , further comprising performing beam training for the target BS via L1 signaling after the second TCI-state is activated.

7. The method of claim 1 , wherein the second TCI-state for the target BS comprises at least one of:

a cell-identifier (ID) corresponding to the target BS;

a transmission reception point-identifier (TRP-ID) corresponding to the target BS;

reference signal (RS) set associated with the second TCI-state; or

quasi-co-location (QCL) parameters for the target BS.

8. A method for wireless communication, comprising:

coordinating, at a target base station (BS), handover of a user-equipment (UE) to the target B S;

transmitting, prior to the handover of the UE, a report to a network entity indicating a transmission configuration indication (TCI)-state of the target BS to be used for cell selection; and

transmitting an indication to the UE to activate the TCI-state for the target BS after the handover is complete, wherein the TCI-state is preconfigured at the UE prior to the handover.

9. The method of claim 8 , further comprising performing beam training for the UE via L1 signaling after the TCI-state is activated.

10. The method of claim 8 , wherein the indication is transmitted via L1 signaling.

11. The method of claim 8 , wherein the report comprises an L1 report indicating the TCI-state of the target BS to be used for the cell selection.

12. The method of claim 8 , wherein the report is triggered via a message received from the network entity.

13. A method for wireless communication, comprising:

transmitting, at a serving base station (BS), a message to a user-equipment (UE) indicating a first transmission configuration indication (TCI)-state for the serving BS and a second TCI-state for a target BS; and

coordinating handover of the UE to the target BS.

14. The method of claim 13 , wherein the message comprises a radio resource control (RRC) configuration message.

15. The method of claim 13 , wherein the message comprises a medium access control-control element (MAC-CE) or downlink control information (DCI).

16. The method of claim 13 , wherein the second TCI-state for the target BS comprises at least one of:

a cell-identifier (ID) corresponding to the target BS;

a transmission reception point-identifier (TRP-ID) corresponding to the target BS;

reference signal (RS) set associated with the second TCI-state; or

quasi-co-location (QCL) parameters for the target BS.

17. A user equipment comprising:

receive circuitry configured to receive signals, wherein the signals include a message containing information indicative of transmission configuration indication (TCI)-states for a plurality of base stations including a first base station associated with a first TCI-state and a second base station associated with a second TCI-state; and

processor circuitry configured to access instructions and data and in response perform operations including:

initiating a handover to the second base station;

accessing at least some of the information indicative of the TCI-states for the plurality of base stations; and

activating the second TCI-state for the second base station after the handover, wherein activating the second TCI-state includes accessing the information indicative of the second TCI-state and using the information to communicate with the second base station.

18. The user equipment of claim 17 , wherein the information indicative of the second TCI-state includes reference signal information associated with the second base station, one or more quasi co-location (QCL) parameters for the second base station, or both.

19. The user equipment of claim 18 , wherein the information indicative of the second TCI-state further includes a cell identifier associated with the second base station, a transmission point (TRP) identifier associated with the second base station, or both.

20. The user equipment of claim 17 , wherein the first base station is a serving base station prior to handoff, and wherein the message containing the information indicative of the TCI-states for the plurality of base stations is received from the serving base station.