BEAM RECOVERY WITHOUT BEAM CORRESPONDENCE

摘要

Disclosed are techniques for beam failure recovery in a wireless communications system. In an aspect, a user equipment (UE) detects a beam failure of a first downlink beam received at the UE from a base station, sends, to the base station, a random access channel (RACH) request identifying one or more candidate downlink beams received at the UE from the base station, and, in response to sending the RACH request, receives, from the base station, a response to the RACH request, the response identifying a second downlink beam from the one or more candidate downlink beams to replace the first downlink beam and indicating a type of beam recovery associated with the second downlink beam for which downlink beam resources have been reserved.