The disclosure relates to a communication technique for combining an IoT technology with a 5G communication system for supporting a higher data transmission rate than that of a beyond-4G system, and a system therefor. The disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, security and safety related services, and the like) based on 5G communication technologies and IoT-related technologies. A method performed by a terminal in a wireless communication system is provided, the method includes receiving configured grant (CG)-physical uplink shared channel (PUSCH) configuration information, identifying a plurality of actual repetition PUSCHs based on a PUSCH repetition transmission type B and the CG-PUSCH configuration information, identifying whether 1 symbol actual repetition PUSCH is included in the plurality of actual repetition PUSCHs, and in case that the 1 symbol actual repetition PUSCH is included in the plurality of actual repetition PUSCHs and is related to uplink transmission in an unlicensed band, transmitting the 1 symbol actual repetition PUSCH.