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. To provide multiple connections, a method of operating a terminal includes receiving a message instructing to establish a second connection based on a second radio access technology (RAT) from a first access node which provides a first connection based on a first RAT, and transmitting a signal for establishing the connection to a second access node using the second RAT.