Capability-based determination of a shared data channel TCI state

A method for wireless communication by a base station, comprising:

• receiving a capability indicator of a capability of a user equipment (UE) to support a number of physical downlink shared channel (PDSCH) transmission configuration indicator (TCI) states and a plurality of control resource set (CORESET) TCI states;
• selecting a first PDSCH TCI state among a plurality of different PDSCH TCI states based at least in part on the capability and a number of active CORESET TCI states;
• transmitting a medium access control (MAC) control element (CE) indicating the first PDSCH TCI state;
• and
• transmitting a downlink transmission on a downlink data transmission beam corresponding to the first PDSCH TCI state.

An apparatus for wireless communication by a user equipment (UE), comprising:

• a processor,
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• identify a capability of the UE to support a number of physical downlink shared channel (PDSCH) transmission configuration indicator (TCI) states and a plurality of control resource set (CORESET) TCI states;
• receive a medium access control (MAC) control element (CE) indicating a first PDSCH TCI state that is an active PDSCH TCI state;
• select the first PDSCH TCI state among a plurality of different PDSCH TCI states based at least in part on the MAC CE, the identified capability, and a number of active CORESET TCI states;
• monitor for a downlink transmission on a downlink data receive beam corresponding to the first PDSCH TCI state.

An apparatus for wireless communication by a base station, comprising:

• a processor,
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive a capability indicator of a capability of a user equipment (UE) to support a number of physical downlink shared channel (PDSCH) transmission configuration indicator (TCI) states and a plurality of control resource set (CORESET) TCI states;
• select a first PDSCH TCI state among a plurality of different PDSCH TCI states based at least in part on the capability and a number of active CORESET TCI states;
• transmit a medium access control (MAC) control element (CE) indicating the first PDSCH TCI state;
• and
• transmit a downlink transmission on a downlink data transmission beam corresponding to the first PDSCH TCI state.

An apparatus for wireless communication by a user equipment (UE), comprising:

• means for identifying a capability of the UE to support a number of physical downlink shared channel (PDSCH) transmission configuration indicator (TCI) states and a plurality of control resource set (CORESET) TCI states;
• means for receiving a medium access control (MAC) control element (CE) indicating a first PDSCH TCI state that is an active PDSCH TCI state;
• means for selecting the first PDSCH TCI state among a plurality of different PDSCH TCI states based at least in part on the MAC CE, the identified capability, and a number of active CORESET TCI states;
• means for monitoring for a downlink transmission on a downlink data receive beam corresponding to the first PDSCH TCI state.

An apparatus for wireless communication by a base station, comprising:

• means for receiving a capability indicator of a capability of a user equipment (UE) to support a number of physical downlink shared channel (PDSCH) transmission configuration indicator (TCI) states and a plurality of control resource set (CORESET) TCI states;
• means for selecting a first PDSCH TCI state among a plurality of different PDSCH TCI states based at least in part on the capability and a number of active CORESET TCI states;
• means for transmitting a medium access control (MAC) control element (CE) indicating the first PDSCH TCI state;
• and
• means for transmitting a downlink transmission on a downlink data transmission beam corresponding to the first PDSCH TCI state.