receiving, from a base station, configuration information including resource information for random access of the UE;

identifying whether there is a random access occasion overlapping a radio frequency (RF) switching gap for the UE in a time domain in case that the random access is performed, the random access occasion being configured for the UE, the RF switching gap being a time period in which the UE using half-duplex communication changes between a transmission and a reception in the UE; and

in case that there is the random access occasion overlapping the RF switching gap, performing the random access procedure with the base station on a next valid random access occasion except for the overlapping random access occasion, based on the received resource information for the random access,

wherein the next valid random access occasion is mapped with an index of a synchronization signal block received by the UE, and

wherein the next valid random access occasion is configured during a predetermined time period from a first symbol after the overlapping random access occasion.