The present disclosure relates to 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. A method is provided for processing transmission of unattended data traffic (UDT) by a base station in a wireless communication system, the method comprises transmitting information indicating whether the transmission of UDT is barred, and barring the transmission of UDT based on the transmitted information.