CPC H04W 74/0833 (2013.01) [H04B 7/0626 (2013.01); H04B 7/0695 (2013.01); H04B 17/309 (2015.01); H04L 5/0091 (2013.01); H04L 27/2692 (2013.01); H04W 74/006 (2013.01); H04W 76/27 (2018.02); H04B 17/17 (2015.01)] | 38 Claims |
1. A method comprising:
receiving, by a wireless device, 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;
receiving 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;
detecting a beam failure of a beam associated with the one or more reference signals;
after the detecting the beam failure, selecting a preamble, of the plurality of preambles, that is associated with a candidate beam; and
transmitting, via a random access channel (RACH) resource, the selected preamble.
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