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. Embodiments herein disclose methods and systems to achieve inter RRC state and inter cell service continuity in NR MBS by addressing procedures and signalling for achieving service continuity upon state change and upon cell change in scenarios such as, but not limited to, RRC connection release, RRC cell reselection, and so on.