The present disclosure relates to a communication scheme and system for converging a 5th generation (5G) communication system and a 4th generation (4G) system. A UE performs a random access on a supplementary uplink (SUL) frequency, and transmits a physical uplink control channel (PUCCH) and a physical uplink shared channel (PUSCH) on the SUL frequency. A Next Generation NodeB (gNB) determines to use a New Radio (NR) uplink (UL) frequency for PUSCH transmissions, and transmits PUSCH configuration information for the NR UL to the UE. The UE transmits a PUSCH on the NR UL but still transmits the PUCCH on the SUL frequency.