Configuring transmission configuration indicator states

A user equipment (UE), comprising:

• at least one memory;
• and
• at least one processor coupled with the at least one memory and configured to cause the UE to:
• receive at least one radio resource control (RRC) message that configures at least one transmission configuration indicator (TCI) state, wherein a TCI state of the at least one TCI state is used as a reference for reception of a downlink signal, transmission of an uplink signal, or a combination thereof;
• receive a medium access control control element (MAC CE) that activates a subset of TCI states of the at least one TCI state for use by downlink control information (DCI);
• and
• receive the DCI, wherein the DCI indicates a TCI state of the at least one TCI state.

An apparatus for performing a network function, the apparatus further comprising:

• at least one memory;
• and
• at least one processor coupled with the at least one memory and configured to cause the apparatus to:
• transmit at least one radio resource control (RRC) message that configures at least one transmission configuration indicator (TCI) state, wherein a TCI state of the at least one TCI state is used as a reference for reception of a downlink signal, transmission of an uplink signal, or a combination thereof;
• transmit a medium access control control element (MAC CE) that activates a subset of TCI states of the at least one TCI state for use by downlink control information (DCI);
• and
• transmit the DCI, wherein the DCI indicates a TCI state of the at least one TCI state.

A processor for wireless communication, comprising:

• at least one controller coupled with at least one memory and configured to cause the processor to:
• receive at least one radio resource control (RRC) message that configures at least one transmission configuration indicator (TCI) state, wherein a TCI state of the at least one TCI state is used as a reference for reception of a downlink signal, transmission of an uplink signal, or a combination thereof;
• receive a medium access control control element (MAC CE) that activates a subset of TCI states of the at least one TCI state for use by downlink control information (DCI);
• and
• receive the DCI, wherein the DCI indicates a TCI state of the at least one TCI state.