Method for fast-Handover using fast release message in based wireless LAN

摘要

PURPOSE: A fast handover method using a fast release message based on a wireless LAN is provided to define a fast release message, and to cancel a packet forwarding or a packet tunneling between access routers, thereby efficiently using resources of the access routers. CONSTITUTION: An MN(Mobile Node)(40) transmits a handover informing message(RtSoIPr) to an old access router(31)(S101). The old access router(31) transmits a proxy advertising message(PrRtAdv) to the MN(40)(S102). The old access router(31) transmits a handover informing message(HI) to a new access router(33)(S103). The new access router(33) transmits a reply to the old access router(31)(S104). The MN(40) transmits registration information(F-BU) to the old access router(31)(S105). The old access router(31) transmits a reply message(F-BACK) to the MN(40) and the new access router(33)(S106). A packet transmitted from the MN(40) is transmitted to the new access router(33)(S107). The MN(40) transmits a handover completing message(F-NA) to the new access router(33)(S108). The MN(40) and the new access router(33) directly transceive the packet(S109). Handover is performed to an area of the new access router(33) where the MN(40) is moved, and internal information is searched by using a fast release message, then packet forwarding or tunneling information for an address is cancelled(S110,S111).