Beam-based initial transmissions, re-transmissions, and search spaces

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

• a memory;
• and
• one or more processors, coupled to the memory, configured to:
• transmit, to a user equipment (UE), an indication of a first search space for control messages from the base station and an indication of a first downlink beam for the first search space;
• transmit, to the UE, an indication of a second search space for control messages from the base station and an indication of a second downlink beam for the second search space;
• send an initial transmission of data within the first search space and using the first downlink beam;
• and
• send a re-transmission of the data within the second search space and using the second downlink beam.

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

• a memory;
• and
• one or more processors, coupled to the memory, configured to:
• receive, from a base station, an indication of a change from a first transmission configuration indicator (TCI) state to a second TCI state, wherein the first TCI state is associated with one or more first control channel monitoring occasions, and the second TCI state is associated with one or more second control channel monitoring occasions different than the one or more first control channel monitoring occasions;
• monitor for messages from the base station within the one or more second control channel monitoring occasions based at least in part on the indication of the change from the first TCI state to the second TCI state;
• and
• receive, from the base station, a control message based at least in part on the one or more second control channel monitoring occasions being monitored.

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

• a memory;
• and
• one or more processors, coupled to the memory, configured to:
• transmit, to a user equipment (UE), an indication of a change from a first transmission configuration indicator (TCI) state to a second TCI state, wherein the first TCI state is associated with one or more first control channel monitoring occasions, and the second TCI state is associated with one or more second control channel monitoring occasions different than the one or more first control channel monitoring occasions;
• and
• transmit, to the UE, a control message within the one or more second control channel monitoring occasions based at least in part on the indication of the change from the first TCI state to the second TCI state.