Patent ID: 8914005

Claim:
A method for network side equipment to logout a mobile station in an idle mode, wherein the network side equipment comprises a plurality of network entities, the method comprising: receiving, by a paging agent of the plurality of network entities, a ranging request message carrying a power-off indication from the mobile station; verifying, by the paging agent, the ranging request message according to an authentication key and an authentication key context of the mobile station; after successfully verifying the ranging request message, sending a location update confirm message from the paging agent to an anchor paging controller/location register of the plurality of network entities; according to the location update confirm message sending a first message indicating the mobile station is power-off from the anchor paging controller/location register to an anchor data path function entity/foreign agent function entity of the plurality of network entities; according to the first message indicating the mobile station is power-off, initiating, by the anchor data path function entity/foreign agent function entity, a mobile IP address de-registration operation upon the mobile station, deleting a context of the mobile station stored in the anchor data path function entity/foreign agent function entity and sending a second message in response to the first message to the anchor paging controller/location register; and according to the second message, deleting, by the anchor paging controller/location register a context of the mobile station stored in the anchor paging controller/location register.