Patent ID: 8219120

Claim:
An information management method, comprising: receiving, by a base station, a ranging request message from a mobile station; sending, by the base station, a location update request message to a relay paging controller, and forwarding, by the relay paging controller, the location update request message to an anchor paging controller of the mobile station; sending, by the anchor paging controller, a mobile station information request message to an anchor authenticator, and sending, by the anchor authenticator, a mobile station information response message to the anchor paging controller; sending, by the anchor paging controller, a location update response message to the relay paging controller in response to the mobile station information response message, and forwarding, by the relay paging controller, the location update response message to the base station; verifying, by the base station, the received ranging request message with an authentication key, sending a ranging response message to the mobile station if verification is successful sending, by the base station, a location update acknowledgement message to the relay paging controller, and sending, by the relay paging controller, the location update acknowledgement message to the anchor paging controller; sending, by the anchor paging controller, a first message to a foreign agent of the mobile station after the anchor paging controller is redirected, wherein the first message comprises information of a new paging controller after redirection; and storing, by the foreign agent, the information of the new paging controller.