Patent ID: 7633904
Filing Date: 2009-12-15
Classification: H04W

Abstract:
1. A method for handover in a wireless access network for a mobile station in idle mode comprising: receiving a location update request message from a relay paging controller when a mobile station has changed paging groups; determining whether the mobile station has switched access service networks based on a network address of the relay paging controller; and when the mobile station has switched between access service networks, sending a handover request message to a proxy mobile client of the mobile station to provide an address of a target foreign agent for use when routing subsequent communications to the mobile station, wherein the proxy mobile client operates in one of the access service networks to serve as a proxy for the mobile station, wherein the network address of the relay paging controller is received in the location update request message, wherein the location update request message is received by an anchor paging controller from the relay paging controller when the mobile station has changed its location from a prior paging group to a new paging group, and wherein determining comprises determining by the anchor paging controller whether the mobile station has either switched paging groups within a current access service network or switched paging groups to a new access service network by comparing the network address of the relay paging controller received in the location update request message with a network address stored in a location register of the anchor paging controller.