Packet Data Service Providing System in Mobile Communication System and Operating Method using the same of

摘要

A packet data service system and operating method thereof in a mobile radio communication network is provided, which can support link mobility by maintaining a data connection between a mobile station and an initially connected interworking function device when a mobile packet data service is provided in the environment of a mobile radio communication network of cellular/PCS/IMT-2000. The packet data service system includes a packet router for providing originating or terminating traffic paths for a plurality of mobile stations and managing particulars of an event whenever the event is produced in the mobile stations, and an interworking function device for controlling the packet router to interwork with another network. If a mobile station deviates from a predetermined service area of the interworking function device while the mobile station is being served with a packet data service interworking with the another network, the packet router continuously maintains the initially determined data link between the mobile station and the interworking function device.