Beam Management and Beam Failure Recovery in a Radio System

A wireless device comprising:

• one or more processors;
• and
• memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
• receive, from a base station, one or more radio resource control messages comprising configuration parameters of a cell for beam failure recovery, wherein the configuration parameters indicate:
• a serving beam set;
• a plurality of candidate beam sets;
• and
• a monitoring priority of the plurality of candidate beam sets;
• detect a beam failure instance of the serving beam set;
• determine, in response to detection of the beam failure instance of the serving beam set, a first candidate beam set of the plurality of candidate beam sets based on the monitoring priority;
• select a candidate beam from the first candidate beam set;
• and
• transmit a preamble associated with the candidate beam for the beam failure recovery.

A system comprising:

• a base station comprising:
• one or more processors;
• and
• memory storing instructions that, when executed by the one or more processors of the base station, cause the base station to transmit one or more radio resource control messages comprising configuration parameters of a cell for beam failure recovery, wherein the configuration parameters indicate:
• a serving beam set;
• a plurality of candidate beam sets;
• and
• a monitoring priority of the plurality of candidate beam sets;
• a wireless device comprising:
• one or more processors;
• and
• memory storing instructions that, when executed by the one or more processors of the wireless device, cause the wireless device to:
• receive the one or more radio resource control messages;
• detect a beam failure instance of the serving beam set;
• determine, in response to detection of the beam failure instance of the serving beam set, a first candidate beam set of the plurality of candidate beam sets based on the monitoring priority;
• select a candidate beam from the first candidate beam set;
• and
• transmit a preamble associated with the candidate beam for the beam failure recovery.