Patent ID: 8238908

Claim:
A method for a network side to logout a mobile station (MS) in an idle mode, wherein said network side comprising one or more network side entities, the method comprising: when it is determined that a service policy of the network side changed, that the MS powered off, that the location update of the network side timed out, or that the resources of the network side are in congestion, sending, by an Authentication Authorization Accounting (AAA) server of the network side entities, an authentication message carrying a first indication of network logout to an anchor authenticator of the network side entities; after receiving the authentication message, sending, by the anchor authenticator, a message for performing a network logout operation for the MS to an anchor paging controller/location register of the network side entities; and receiving, by the anchor paging controller/location register, the message for performing the network logout operation for the MS from the anchor authenticator, wherein according to the message for performing the network logout operation for the MS, the anchor paging controller/location register triggers at least one network side entity of the network side entities to release resources associated with the MS and delete a context of the MS stored in the at least one network side entity.