Beam selection for random access in a hierarchical beam architecture

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

• a memory comprising computer-executable instructions;
• and one or more processors configured to execute the computer-executable instructions and cause the apparatus to:
• receive, via a first beam, an indication of whether a beam or an uplink bandwidth part (BWP) of a beam is barred for uplink transmission, wherein the indication is included in system information and the system information includes:
• a reference signal (RS) resource indicator for each of a first plurality of beams including the beam;
• a random access channel configuration for each of the first plurality of beams;
• a downlink bandwidth part (BWP) configuration for each of the first plurality of beams;
• and
• an uplink BWP configuration for each of the first plurality of beams;
• and
• perform a random access procedure via the first beam or a second beam based at least in part on the indication.

An apparatus for wireless communication at a network entity, comprising:

• a memory comprising computer-executable instructions;
• and one or more processors configured to execute the computer-executable instructions and cause the apparatus to:
• transmit, via a first beam, an indication of whether a beam or an uplink bandwidth part (BWP) of a beam is barred for uplink transmission, wherein the indication is included in system information and the system information includes:
• a reference signal (RS) resource indicator for each of a first plurality of beams including the beam;
• a random access channel configuration for each of the first plurality of beams;
• a downlink bandwidth part (BWP) configuration for each of the first plurality of beams;
• and
• an uplink BWP configuration for each of the first plurality of beams;
• and
• perform a random access procedure, with a user equipment (UE), via the first beam or a second beam based at least in part on the indication.