Patent ID: 8325678

Claim:
A method of performing a handover, the method comprising: a mobile terminal transmitting an access stop message to a first Access Point (AP) when the mobile terminal moves from a first AP area to a second AP area; the first AP transmitting a handover start message to a first Mobility Access Gateway (MAG) corresponding to the first AP in response to the access stop message; the first MAG transmitting the handover start message to a Local Mobile Anchor (LMA); the LMA performing a buffering of a data packet to be transmitted to the mobile terminal; the LMA deleting home prefix information of the mobile terminal when the second MAG is set as the router, the home prefix information being stored in the first MAG in advance; the mobile terminal setting, as a router, a second MAG corresponding to a second AP based on the home prefix information of the mobile terminal when the mobile terminal moves to the second AP area, the home prefix information being stored in the first MAG in advance; and performing an authentication of the mobile terminal based on authentication information of the mobile terminal, the authentication information being stored in the first MAG in advance.