METHOD FOR SYNCHRONIZING LIFETIME BETWEEN MOBILE NODE AND CORRESPONDENT NODE

A method for synchronizing the lifetime of binding messages between mobile nodes is provided to improve the communication quality between an MN(Mobile Node) and a CN(Correspondent Node) by synchronizing the remaining lifetime value of an MN with the remain lifetime value of a CN and eliminating inconsistency of communication parameters between the two nodes. An MN creates a binding update message containing lifetime information and message creation time information(S601) and transmits it to a CN(S602). Receiving the binding update message from the MN, the CN compares message reception time with creation time of the binding update message, incorporates the comparison result into lifetime information of the binding update message, and calculates/stores a new lifetime(S603).