METHOD FOR PROVIDING QUALITY OF SERVICE BY INTERWORKING IP MULTIMEDIA SUBSYSTEM NETWORK AND CIRCUIT SWITCH NETWORK IN A MOBILE COMMUNICATION SYSTEM

摘要

The present invention provides a service quality providing method using a megaco interface in a mobile communication system in which an IP multimedia sub-system network providing a multi-media service and a circuit-switching network are interworked. Determining a service type subscribed to by a called user terminal by receiving a call setup request; and as a result of the determination, the quality of service parameter included in a specific area in a call setup response received from the terminal when the IP multimedia subsystem is a service subscription terminal Verifying the information, marking a service quality grade corresponding to the corresponding service quality parameter information according to the pre-assigned service quality policy, and determining the service quality information, and identifying the specific within the MEGACO interface. Include the determined quality of service information in the area It characterized in that it comprises a process.