Method and apparatus for beam management for inter-cell mobility

A method performed by a user equipment (UE) in a communication system, the method comprising:

• receiving a radio resource control (RRC) message including a plurality of transmission configuration indicator (TCI) states associated with an uplink transmission;
• receiving a media access control (MAC) control element, CE, including activation information associated with a set of TCI states from the plurality of TCI states;
• receiving downlink control information (DCI) including indication information associated with an indicated TCI state from the set of TCI states;
• and
• transmitting the uplink transmission based on the indicated TCI state,
• wherein a first TCI state among the plurality of TCI states includes a cell-identifier (ID) that is not a serving cell-ID, and
• wherein a second TCI state among the plurality of TCI states includes the serving cell-ID.

A base station in a communication system, the base station comprising:

• a processor;
• and
• a transceiver operably coupled with the processor, the transceiver configured to:
• transmit a radio resource control (RRC) message including a plurality of transmission configuration indicator (TCI) states associated with an uplink transmission;
• transmit a media access control (MAC) control element (CE) including activation information associated with a set of TCI states from the plurality of TCI states;
• transmit downlink control information (DCI) including indication information associated with an indicated TCI state from the set of TCI states;
• and
• receive the uplink transmission associated with the indicated TCI state,
• wherein a first TCI state among the plurality of TCI states includes a cell-identifier (ID) that is not a serving cell-ID, and
• wherein a second TCI state among the plurality of TCI states includes the serving cell-ID.