CPC H04W 74/0816 (2013.01) [H04W 28/0278 (2013.01); H04W 74/008 (2013.01); H04W 74/0841 (2013.01); H04W 76/28 (2018.02); H04W 80/02 (2013.01)] | 12 Claims |
1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
transmitting a random access preamble to a base station;
monitoring reception of a random access response corresponding to the random access preamble; and
increasing a counter associated with a preamble power ramping, in case that the random access response is not received,
wherein, in case that a listen-before-talk (LBT) failure indication was received from lower layers for the random access preamble transmission, the counter is not increased.
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