Fallback beam selection procedure during failure of beam change instruction reception

A method of wireless communication by a user equipment (UE), comprising:

• utilizing a first UE beam to communicate with a base station that is configured to use a first beam of the base station;
• determining whether the UE has lost communication with the base station;
• determining that the base station is not configured with a second beam of the base station when the UE determines that the UE has lost communication;
• and
• selecting a third UE beam to communicate with the base station via a third beam of the base station, in response to determining that the base station is not configured with the second beam of the base station, wherein the third beam is a predefined beam.

A base station for wireless communication, comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• determine to change from a first beam to a second beam;
• transmit, to a user equipment (UE), a beam change instruction to indicate the determination to change to the second beam upon the determination to change to the second beam;
• determine whether the UE has received the beam change instruction;
• and
• select a third beam to communicate with the UE when the base station determines that the UE has not received the beam change instruction, wherein the third beam is a predefined beam.

A user equipment (UE) for wireless communication, comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• utilize a first UE beam to communicate with a base station that is configured to use a first beam of the base station;
• determine whether the UE has lost communication with the base station;
• determine that the base station is not configured with a second beam of the base station when the UE determines that the UE has lost communication;
• and
• select a third UE beam to communicate with the base station via a third beam of the base station, in response to determining that the base station is not configured with the second beam of the base station, wherein the third beam is a predefined beam.