Method and device for requesting and distributing address of connection point

A method to claim a connection point address by a relay Concentrator Dynamics Protocol, DHCP configuration, comprising: receiving a discovery message sent by a DHCP Discover terminal via a base station, BS; sending discovery message to a DHCP Discover DHCP server; receiving an offer message DHCP Offer from the DHCP server; message sending DHCP Offer to supply terminal through the base station BS, where the DHCP offer message transmits an IP address used by the terminal as its base address, HoA; receipt of a demand for an Internet Protocol address, IP terminal; the request to a client with Mobile IP protocol President, PMIP, to start registration procedures Mobile IP, MIP, the terminal and receiving a registration result MIP and sending demand for an IP address of the terminal with the result of MIP registration to the DHCP server; receiving a response assignment generated IP address depending on the result of the registration MIP and demand a terminal IP address from the DHCP server and sending the response assignment generated IP address depending on the outcome of the MIP registration and the demand for an IP address from terminal to terminal, where the response of IP address allocation is a response confirmation No, NAK, if the MIP registration result is a failed record.