Method and apparatus for improving mobility in the wireless communication system

The present disclosure relates to 5G communication system to support higher data rates than the 4G system after the communication technique and system that fuses with the IoT technology. This disclosure is for the intelligent services (e.g., based on the 5G technologies and IoT related technologies, smart home, smart buildings, smart city, smart card, or, connected cars, health care, digital educational, retail, security and safety services, ) it can be applied to. A communication method of a base station in a wireless communication system according to this disclosure includes the steps to determine the association information between tracking area information, and a Mobility Management Entity or a Mobility Management entity group comprising the mobility management entity the base station support, the OK based on the association information, sending the interface setup request message associated with the tracking area information to the at least one mobility management entity in the mobility management entity a group associated with the tracking area information, and at least one of mobility of the mobility gwanrin entity group It may comprise the step of receiving from the management entity interface setup response message associated with the tracking area information.