Patent ID: 8391241
Filing Date: 2013-03-05
Classification: H04W

Abstract:
1. A method for communicating information associated with handoff of mobile station equipment (MS) from a long term evolution (LTE) radio access network (RAN) to a circuit-switched domain of a second generation (2G) RAN comprising: receiving, at a Serving Global Packet Radio Service Support Node (SGSN) associated with said second generation RAN, a request for handoff of a data connection from a mobility management entity (MME) associated with said LTE RAN; determining, by said SGSN based on received user equipment (UE) context and local information describing said 2G RAN's capabilities, that said data connection is to be handed off to said circuit-switched domain of said 2G RAN; and transmitting, across an interface between said SGSN and a Base Station Subsystem (BSS), a message requesting resources for handover of said MS.