Techniques for using default beams for multi-PDSCH repetitions

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

• transmitting, to a user equipment (UE), a downlink control message scheduling a plurality of downlink transmission repetitions of multiple transport blocks, the downlink control message indicating a specified transmission configuration indicator state for transmitting the plurality of downlink transmission repetitions of multiple transport blocks according to the scheduling, the downlink transmission repetitions of multiple transport blocks comprising a first set of downlink transmission repetitions and a second set of downlink transmission repetitions;
• and
• transmitting, via a default transmission configuration indicator state different from the specified transmission configuration indicator state, a first subset of downlink transmission repetitions from the first set of downlink transmission repetitions, the second set of downlink transmission repetitions, or both, the default transmission configuration indicator state based at least in part on a first time interval between a transmission of the downlink control message and a transmission of at least one downlink transmission repetition of the first set of downlink transmission repetitions or the second set of downlink transmission repetitions failing to satisfy a time duration, wherein:
• a first subset of a plurality of specified transmission configuration indicator states including the specified transmission configuration indicator state, a first subset of a plurality of default transmission configuration indicator states including the default transmission configuration indicator state, or both, is based at least in part on a first set of one or more activated transmission configuration indicator states associated with an earliest transmission time interval corresponding to an earliest downlink transmission repetition of the first set of downlink transmission repetitions;
• and
• a second subset of the plurality of specified transmission configuration indicator states, a second subset of the plurality of default transmission configuration indicator states, or both, is based at least in part on a second set of one or more activated transmission configuration indicator states associated with an earliest transmission time interval corresponding to an earliest downlink transmission repetition of the second set of downlink transmission repetitions.

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

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive, from a base station, a downlink control message scheduling a plurality of downlink transmission repetitions of multiple transport blocks, the downlink control message indicating a specified transmission configuration indicator state for receiving the plurality of downlink transmission repetitions of multiple transport blocks according to the scheduling, the downlink transmission repetitions of multiple transport blocks comprising a first set of downlink transmission repetitions and a second set of downlink transmission repetitions;
• and
• receive, via a default transmission configuration indicator state different from the specified transmission configuration indicator state, a first subset of downlink transmission repetitions from the first set of downlink transmission repetitions, the second set of downlink transmission repetitions, or both, the default transmission configuration indicator state based at least in part on a first time interval between a receipt of the downlink control message and a receipt of at least one downlink transmission repetition of the first set of downlink transmission repetitions or the second set of downlink transmission repetitions failing to satisfy a time duration, wherein:
• a first subset of a plurality of specified transmission configuration indicator states including the specified transmission configuration indicator state, a first subset of a plurality of default transmission configuration indicator states including the default transmission configuration indicator state, or both, is based at least in part on a first set of one or more activated transmission configuration indicator states associated with an earliest transmission time interval corresponding to an earliest downlink transmission repetition of the first set of downlink transmission repetitions;
• and
• a second subset of the plurality of specified transmission configuration indicator states, a second subset of the plurality of default transmission configuration indicator states, or both, is based at least in part on a second set of one or more activated transmission configuration indicator states associated with an earliest transmission time interval corresponding to an earliest downlink transmission repetition of the second set of downlink transmission repetitions.

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

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• transmit, to a user equipment (UE), a downlink control message scheduling a plurality of downlink transmission repetitions of multiple transport blocks, the downlink control message indicating a specified transmission configuration indicator state for transmitting the plurality of downlink transmission repetitions of multiple transport blocks according to the scheduling, the downlink transmission repetitions of multiple transport blocks comprising a first set of downlink transmission repetitions and a second set of downlink transmission repetitions;
• and
• transmit, via a default transmission configuration indicator state different from the specified transmission configuration indicator state, a first subset of downlink transmission repetitions from the first set of downlink transmission repetitions, the second set of downlink transmission repetitions, or both, the default transmission configuration indicator state based at least in part on a first time interval between a transmission of the downlink control message and a transmission of at least one downlink transmission repetition of the first set of downlink transmission repetitions or the second set of downlink transmission repetitions failing to satisfy a time duration, wherein:
• a first subset of a plurality of specified transmission configuration indicator states including the specified transmission configuration indicator state, a first subset of a plurality of default transmission configuration indicator states including the default transmission configuration indicator state, or both, is based at least in part on a first set of one or more activated transmission configuration indicator states associated with an earliest transmission time interval corresponding to an earliest downlink transmission repetition of the first set of downlink transmission repetitions;
• and
• a second subset of the plurality of specified transmission configuration indicator states, a second subset of the plurality of default transmission configuration indicator states, or both, is based at least in part on a second set of one or more activated transmission configuration indicator states associated with an earliest transmission time interval corresponding to an earliest downlink transmission repetition of the second set of downlink transmission repetitions.