Patent ID: 11943677
Assignee: QUALCOMM INCORPORATED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A method for wireless communications performed by a user equipment (UE), comprising:
communicating using beamforming with a base station (BS) via an active beam;
obtaining a configuration, in a radio resource control (RRC) signal, indicating one or more alternative beams for the UE to use to send one or more beam recovery messages to the BS when a beam failure associated with the active beam is detected at the UE and indicating a first threshold for the UE to use for selecting an alternative beam from the one or more alternative beams, wherein the first threshold comprises a directional threshold and a reference signal received power (RSRP) threshold associated with a channel state information reference signal and a synchronization signal, wherein when no alternative beam of the one or more alternative beams meets the directional threshold, the configuration indicates a best alternative beam of the one or more alternative beams based on the RSRP threshold;
detecting the beam failure associated with the active beam;
in response to the detection, selecting an alternative beam from the one or more alternative beams after obtaining the configuration based on the first threshold; and
performing a random access channel procedure via the selected alternative beam by at least in part sending, to the BS, a beam recovery request via the selected alternative beam, wherein the beam recovery request includes a random access channel message.