IP TUNNEL MANAGEMENT METHOD FOR REUSING IP TUNNEL IN MOBILE IP SERVICE SYSTEM

摘要

PURPOSE: An IP(Internet Protocol) tunnel management method for reusing an IP tunnel in a mobile IP service system is provided to remove a generated tunnel when a user does not exists without generating several tunnels having the same path. CONSTITUTION: If a mobile node leaves a network(700), it is searched whether an IP tunnel to be deleted exists using an IP tunnel table(702). If the IP tunnel to be detected does not exist(706), it is processed as an error(710). If the IP tunnel to be deleted exists(706), the usage of a tunnel element is decreased by 1(707). If the decreased usage of the IP tunnel is 0(708), the corresponding IP tunnel is deleted(709).