The present disclosure relates to a communication method and a system thereof which merge IoT technology with a 5G communication system for supporting a higher data transmission rate than 4G systems. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. The present disclosure relates to a method and device for collecting and reporting cell measurement information in a next generation communication system, and relates to an integrity protection method and device for supporting vehicle communication.