Disclosed is a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure relates to an operating method of a terminal in a power saving state, a method for identifying a terminal and transmitting a paging signal to the terminal at a base station, and a system including such a terminal and such a base station.