Patent ID: 6937589

Claim:
A mobile communication system comprising: a mobile terminal; a radio access network which comprises: a radio base station which carries out packet communication with said mobile terminal through a radio channel, and a radio channel control station which controls said radio base station; and a home agent which stores data transmitted from said mobile terminal and associated with a current position of said mobile terminal, wherein the packet communication between said mobile terminal and said radio channel control station is controlled based on radio channel control of packet switching connection, and the packet communication from said home agent to said radio channel control station is controlled based on mobile IP (mobile Internet protocol), wherein said home agent receives packet data destined to said mobile terminal and transfers the packet data to said mobile terminal based on the stored data associated with the current position of said mobile terminal, and said home agent includes an IP module that encapsulates the packet data received from a correspondent node, generates encapsulated packet data having the data associated with the current position of said mobile terminal as a destination address, and transmits the encapsulated packet data to said mobile terminal, and wherein said mobile terminal includes an IP module that decapsulates the encapsulated packet data that has been transmitted from said IP module of said home agent, to extract the packet data.