Address dynamic assignment system, relay apparatus, address management apparatus, location manager and address dynamic assignment method

摘要

To provide an address dynamic assignment system, a relay apparatus, a location manager, an address management apparatus and an address dynamic assignment method for dynamically assigning terminal identification address information for identifying a mobile node without putting load on a radio section by reducing a message amount in the radio section. An MN 1 sends an LR including IPha information to an AR 2. An address acquisition necessity determination portion 21 of the AR 2 determines whether or not there is a need to acquire the IPha information to be assigned to the MN 1 based on the IPha information included in the LR. An address acquisition proxy portion 22 of the AR 2 acquires the IPha information. A post-address-acquisition location registration portion 23 sends an LU including the acquired IPha information to an LM 4. An assigned address notification portion 24 sends back an LRAck including the acquired IPha information to the MN 1.