METHOD AND SYSTEM FOR ROAMING SERVICE IN MOBILE COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide method and system for transmitting a data packet by offering a roaming service to different mobile communication providers in a radio communication system.;SOLUTION: The system includes: an access terminal for transmitting a network identifier to a packet data serving node of the visited network; a packet data serving node for checking whether or not the access terminal subscribes to a roaming service on the basis of the network identifier, requesting the authentication of the access terminal to an authentication authorization accounting server of the home network and setting tunneling with the packet data serving node of the home network; the authentication authorization accounting server of the home network for authenticating the access terminal and transmitting tunneling information to the packet data serving node of the visited network; and the packet data serving node of the visited network for setting tunneling with the packet data serving node and exchanging data with the access terminal.;COPYRIGHT: (C)2007,JPO&INPIT