The disclosure relates to a communication scheme and system for convergence between an IoT technology and a 5G communication system for supporting a higher data transfer rate beyond a 4G system. The disclosure may be applied to intelligent services (e.g. smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, and security and safety-related services), based on a 5G communication technology and an IoT-related technology. In addition, the disclosure provides a method and an apparatus for reducing the power consumption of a terminal in a wireless communication system.