Patent ID: 11950287
Assignee: COMCAST CABLE COMMUNICATIONS, LLC
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
transmit one or more radio resource control messages comprising:
one or more configuration parameters of a plurality of reference signals; and
one or more configuration parameters of a plurality of preambles;

transmit, to a wireless device, at least one medium access control (MAC) control element comprising an indication to activate one or more reference signals of the plurality of reference signals; and
receive, from the wireless device via a random access channel (RACH) resource, a preamble, of the plurality of preambles, that is associated with a candidate beam.