Uplink listen-before-talk failure recovery
Abstract:
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a bandwidth part (BWP) to switch to after identifying consistent uplink listen-before-talk (LBT) failures on a first BWP based on parameters indicated by a base station. For example, the base station may transmit a switching parameter to the UE that the UE then uses to switch to a second BWP based on identifying the consistent uplink LBT failures on the first BWP. Subsequently, after selecting the second BWP, the UE may attempt to use the second BWP for uplink transmissions (e.g., after performing a random access procedure). Additionally, the UE may indicate the consistent uplink LBT failures to a base station associated with the failed BWP based on a type of cell that is using that failed BWP.
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