Mobile communication system, router, mobile node, and mobile communication method

摘要

A technique to support mobile communication in an IP network in which a mobile node MN in communication with an access router detects change of a connection link, the mobile node MN sends another access router a change request regarding a first temporary address used prior to the movement of the mobile node MN based on the detected change, and a distribution router creates a cache memory in which the first temporary address is changed into a second temporary address used after the move and receives and forwards a packet destined for the first temporary address sent from a correspondent node CN to the second temporary address. Therefore, a mobile node on high-speed movement continues mobile communication and it is possible to improve efficiently use of network resources without change of an exiting network configuration and to realize data transmission/reception with less packet losses.