Patent ID: 7269425

Claim:
A location management system in a packet switched communication network adapted for wireless communication wherein the packet switched communication network is an Internet Protocol (IP) network and comprises multiple routers at least one of the routers being an access router adapted for wireless communication with mobile nodes, an area served by the at least one access router is a cell; the location management system comprising: at least one location area manager and at least one regional location manager; wherein the at least one location area manager comprises a first signaling server and the at least one regional location manager comprises a second signaling server respectively separated from said multiple routers and one of said at least one location area manager and said at least one regional location manager comprises means for maintaining a list of mobile nodes located within at least one location area wherein one mobile node is associated to multiple regional location managers; a first predefined set of cells defines said at least one location area and the at least one regional location manager further comprises means for managing location information within a single location management region wherein the single location management region is a second predefined set of cells; and the at least one location area manager and the at least one regional location manager are inter-connected and adapted to exchange information.