METHOD FOR ASSIGNING/CANCELING DYNAMIC IP ADDRESS BY DIAMETER SERVER

摘要

PURPOSE: A method for assigning/canceling a dynamic IP address by a diameter server is provided to enable a diameter server to authenticate a terminal subscriber when a dynamic IP address assign request is received, and to request a dynamic IP address assignment of a DHCP server, thereby preventing the address from being assigned to an unauthorized user. CONSTITUTION: A mobile terminal(114) transmits a DHCP server retrieval message(301). If an address manager(204) transmits the DHCP server retrieval message(302), a DHCP server(112) transmits a DHCP address transmit message(303). The address manager(204) transmits the DHCP address transmit message to the terminal(114)(304). The terminal(114) transmits a DHCP request message(305), and the address manager(204) transmits an address assign authentication request message to a protocol converter(201)(306). The converter(201) transmits an address assign authentication result message(307). If a dynamic IP address right is not included, an address assign failure message is transmitted to the terminal(114)(308). A dynamic IP address assignment is requested(309). The DHCP server(112) transmits a dynamic IP address(310). The address manager(204) transmits an address assign notice message(311,313). If an address assign result message is transmitted(312,314), the address manager(204) transmits an address assign complete message to the terminal(114)(315).