MOBILITY MANAGEMENT METHOD FOR IPV6-BASED USER-DEFINED NETWORK

摘要

PURPOSE: A mobility management method of an Ipv6(Internet Protocol version 6) based user defined network is provided to execute a handover process without the loss of a packet transmitted from a mobile node. CONSTITUTION: An NAR(Next Access Router)(207) executes a routing function of a packet transmitted and received through an NAP(Next Access Point). A user defined network mobility management server generates NCoA(New Care-of Address) for each candidate by using the identification information of an NAP candidate accumulated in an NCoA request signal received from a mobile node. The user defined network mobility management server adds the NCoA to the NCoA response signal. The user defined network mobility management server transmits the NCoA response signal to the mobile node through a PAR(Previous Access Router). [Reference numerals] (208) User defined network mobility management server; (210) ISP A mobility management server; (256) User defined network configured by a mobile node200 owner; (AA) Correspondent nodeCorespondent Node; CN; (BB,S268) Request binding update; (CC) ISP B mobility management server; (EE) Internet; (S250) Weaken signal; (S252) Collect adjacent AP; (S254) NCoA request signal; (S255) Generate NCoA; (S256) Request address overlapping inspection; (S258) Result of the address overlaping inspection; (S260) NCoA response signal; (S262) Generate a first tunnel; (S263) Transfer a packet to be transmitted to the mobile node200; (S264) Buffer a packet received from a PAR203; (S265) Move to an ISP B jurisdictional boundary; (S266) Select NAP of NAP candidates; (S267) L2 handover; (S269) Generate a second tunnel; (S270,DD) Transmit the buffered packet