METHOD AND DEVICE FOR BASE STATION TO REPORT LBT FAILURE INFORMATION IN NEXT-GENERATION MOBILE COMMUNICATION SYSTEM OPERATING IN UNLICENSED FREQUENCY BAND

摘要

The present disclosure relates to: a communication method for fusing IoT technology with 5G communication systems for supporting higher data transmission rates than 4G systems; and to a system for same. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail business, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. Disclosed are a method and a device for a terminal to indicate whether LBT has failed or not and declare a detected LBT failure, in report mechanisms such as RLF, SCG failure, establishment failure, and MDT.