Patent ID: 8238326

Claim:
A method of wireless communication for a multifunction mobile client, comprising the steps of: when the multifunction mobile client is in a General Packet Radio Service (GPRS) session, routing GPRS control traffic to a gateway support node through a proxy server transparently to the client; and routing GPRS user traffic between a serving support node and the gateway support node either directly or through the proxy server; when the multifunction mobile client switches to non-GPRS, Internet Protocol (IP)-based access network during a GPRS session, if only GPRS control traffic is anchored to the proxy server, causing the proxy server to command the gateway support node to switch the GPRS user traffic from the serving support node to the proxy server; or if GPRS control and user traffic are anchored to the proxy server, causing the proxy server to update the gateway support node, the proxy server maintaining control of the GPRS session in a direction toward the gateway support node while switching access networks; wherein the proxy server maintains a same IP address for the client during the GPRS session and a non-GPRS session; wherein the proxy server establishes a tunnel to the multifunction mobile client for carrying packets to the client, and wherein before and after switching to the non-GPRS network, addresses associated with an application layer of the multifunction mobile client are the same.