Method for handoff between pdsn's

A method to perform handoff method between packet matching device according to the invention for performing a handoff between a packet matching device for providing a packet service to the mobile node, the new packet matching device has at least one old packet matching forming a communication network, receiving the subscriber information of the mobile node (mobile node) from the apparatus; After identifying the mobile node comprising: transmitting identification information for the mobile node to the old packet matching device that the mobile node is connected; Receiving all the information of the mobile node to the old packet matching device is transmitted based on the identification information; And by the forming of the mobile node and the communication channel based on all of the information above; release the PPP session, characterized in that it includes a, so performing the hand-off without a PPP reset set in the time as before to set the terminal and the PPP session in a short time as long as it can perform a handoff between PDSN