The present disclosure relates to: a communication technique for converging an IoT technology with a 5G communication system for supporting a higher data transfer rate beyond a 4G system; and a system therefor. The present disclosure can be applied to intelligent services (for example, a smart home, a smart building, a smart city, a smart car or connected car, health care, digital education, retail business, security and safety-related service, etc.) on the basis of a 5G communication technology and an IoT-related technology. The present invention proposes various communication methods and apparatuses according to changes in bandwidth part in a 5G communication system.