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 witha 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. In accordance with an aspect of the present disclosure, a method by a terminal of a mobile communication system includes receiving, from a base station, first control information on first type data; identifying whether second control information on second type data is received from the base station; and terminating decoding of the first type data if the second control information is received.