Beam failure recovery using contention based random access

A wireless device, comprising:

• an antenna;
• a radio operably coupled to the antenna;
• and
• at least one processor operably coupled to the radio;
• wherein the wireless device is configured to:
• establish a cellular link with a cellular base station,
• detect beam failure;
• and
• perform a contention based random access procedure based at least in part on detecting beam failure, wherein the wireless device provides a request for beam failure recovery during the contention based random access procedure, wherein performing the contention based random access procedure comprises:
• transmitting a first message with a preamble of the contention based random access procedure to the cellular base station, wherein the first message includes wireless device identification information and beam failure indication;
• and
• receiving a second message resolving the based at least in part on the wireless device identification information being included in the first message of the contention based random access procedure.

A cellular base station, comprising:

• an antenna;
• a radio operably coupled to the antenna;
• and
• at least one processor operably coupled to the radio;
• wherein the cellular base station is configured to:
• establish a cellular link with a wireless device,
• receive a request for beam failure recovery from the wireless device during a contention based random access procedure initiated by the wireless device, wherein the contention based random access procedure comprises receiving wireless device identification information from the wireless device in a first message of the contention based random access procedure;
• and
• provide a second message resolving the contention based at least in part on the request for beam failure recovery, and wherein the second message is based at least in part on the wireless device identification information being included in the first message of the contention based random access procedure.