METHOD AND APPARATUS FOR ROAMING BETWEEN COMMUNICATIONS NETWORKS

摘要

A Gateway node for use in a Proxy Mobile IP network. The Gateway node is provided with a receiver for receiving a registration request sent from an Authentication, Authorization and Accounting server in a visited network. The request comprises an identifier of a home network or a Mobile Node. The receiver is also arranged to receive a binding update message sent from a Proxy Mobile Agent in the visited network, the binding update message comprising an identifier of the home network or Mobile Node. A processor is also provided for associating the registration request with the binding update message using the identifier of the home network or Mobile Node.