A method performed by a user equipment, UE, operating in a wireless communication system, the method comprising: receiving, from a base station, BS, sounding reference signal, SRS, resource configuration information for at least one SRS resource for transmission of an SRS; and determining whether a guard period related to the at least one SRS resource is configured for an antenna switching; based on the at least one SRS resource being related to the antenna switching, each SRS resource of the at least one SRS resource is related to a different antenna of the UE for the transmission of the SRS and the guard period is configured in between SRS resources each related to a different antenna of the UE for the antenna switching, characterised in that based on the guard period being configured, and based on the guard period overlapping in time with at least one physical uplink control channel, PUCCH, symbol which is to be used for transmitting a PUCCH: i) for the guard period configured in between the SRS resources in an SRS resource set which is configured in one component carrier, CC, as same as the SRS resource is configured, a priority rule between the PUCCH and the guard period is identically configured to a priority rule between the PUCCH and the SRS in the SRS resource adjacent in time to the guard period, and ii) whether the PUCCH is transmitted is determined based on the priority rule between the PUCCH and the guard period. receiving, from a base station, BS, sounding reference signal, SRS, resource configuration information for at least one SRS resource for transmission of an SRS; and determining whether a guard period related to the at least one SRS resource is configured for an antenna switching; based on the at least one SRS resource being related to the antenna switching, each SRS resource of the at least one SRS resource is related to a different antenna of the UE for the transmission of the SRS and the guard period is configured in between SRS resources each related to a different antenna of the UE for the antenna switching, characterised in that based on the guard period being configured, and based on the guard period overlapping in time with at least one physical uplink control channel, PUCCH, symbol which is to be used for transmitting a PUCCH: i) for the guard period configured in between the SRS resources in an SRS resource set which is configured in one component carrier, CC, as same as the SRS resource is configured, a priority rule between the PUCCH and the guard period is identically configured to a priority rule between the PUCCH and the SRS in the SRS resource adjacent in time to the guard period, and ii) whether the PUCCH is transmitted is determined based on the priority rule between the PUCCH and the guard period. i) for the guard period configured in between the SRS resources in an SRS resource set which is configured in one component carrier, CC, as same as the SRS resource is configured, a priority rule between the PUCCH and the guard period is identically configured to a priority rule between the PUCCH and the SRS in the SRS resource adjacent in time to the guard period, and ii) whether the PUCCH is transmitted is determined based on the priority rule between the PUCCH and the guard period.