QUALCOMM Incorporated
Transmission configuration indication field invalidation after PDSCH beam setting

Abstract:

Aspects relate to mechanisms for wireless communication devices to utilize transmission configuration indication (TCI) field invalidation after PDSCH beam setting. A user equipment (UE) detecting a beam failure on a connected beam. The UE transmits a beam failure recovery request. The beam failure recovery request includes an indication of a candidate beam. The UE receives a first message including a beam failure recovery response and a second message including downlink control information (DCI) for scheduling a physical downlink shared channel (PDSCH). The UE applies the candidate beam to the PDSCH when the second message is received at least a predetermined number of symbols after receiving the first message.