Patent ID: 8023497
Filing Date: 2011-09-20
Classification: H04L,H04W

Abstract:
1. A method for processing a session associated with a mobile device capable of communicating over at least two networks, comprising: during an active circuit-switched session between the mobile device and a circuit switched network, determining whether the active circuit-switched session is to be handed off from the circuit-switched network to a packet-switched network based on at least one handoff condition, wherein the at least one handoff condition comprises information relating to a network load; indicating that the active circuit-switched session is to be anchored at a server in the packet-switched network that provides interworking with the circuit switched network only when one of the at least one handoff condition is met, wherein the active circuit-switched session is not anchored at the server when the at least one handoff condition is not met; receiving at the mobile device a call from the server through the circuit-switched network in response to the indication in order to establish a new circuit-switched session with the server; merging the active circuit-switched session with the new circuit-switched session with the server; and establishing a packet-switched session over the packet-switched network with the server, wherein the server merges the active circuit-switched session, the packet-switched session and the new circuit-switched session in order to hand off the active circuit-switched session from the circuit-switched network to the packet-switched network.