Disclosed is an operating method of a serving base station in wireless communication system. The method comprises obtaining delay-tolerance information with respect to user equipment, and operating based on the delay-tolerance information. The delay-tolerance information indicates whether the user equipment is a delay-tolerant user equipment (UE), which allows a service delay. Provided is a delay-tolerance information-based operating method of user equipment in a wireless communication system. The method comprises generating delay-tolerance information and transmitting delay-tolerance information to a network. The delay-tolerance information indicates whether the user equipment is a delay-tolerant user equipment (UE), which allows a service delay. The network is operated based on the delay-tolerance information.