System and method for supporting mobility of mobile node using regional anchor point in future Internet

A method for maintaining data transmitted from a corresponding node when a mobile node moves from a home network to an external network in a network system including a home agent for managing an address of the mobile node and a plurality of access routers to which the mobile node can move, the method comprising the steps of:

• acquiring a care-of address (CoA) assigned from the first access router when the mobile node first has moved from the home network to the external network;
• determining whether the first access router has a regional anchor point (RAP) function;
• and
• designating the first access router as a first RAP and transmitting a binding update having the CoA assigned from the first access router and a home address to the home agent, if the first access router has a RAP function.

An apparatus for supporting mobility of a mobile node moved from a second access router to a first access router in a network system including a home agent for managing an address of a mobile node and a plurality of access routers to which the mobile node can move, the apparatus comprising:

• a first access router for assigning a first care-of address (CoA) to the mobile node;
• a mobile node for determining whether a second access router has a RAP function and transmits a binding message including the first CoA to the second access router if the second access router has a RAP function;
• and
• a second router for assigning a second CoA to a mobile station and binding the first CoA from the mobile node with the assigned second CoA upon receiving a binding message from the mobile node.