Patent ID: 8817741
Filing Date: 2014-08-26
Classification: H04W

Abstract:
1. A method for resource management using a packet data network gateway (PDN GW) during a handover operation from a first access network to a second access network, the method comprising: sending a policy update message from the PDN GW to a policy and charging rules function (PCRF) over an interface comprising at least one of the following: an S2a interface, an S2c interface and an S5 interface; receiving, at the PDN GW, a policy update confirmation message from the PCRF over the interface; establishing, via the PDN GW, connectivity between user equipment (UE) and the PDN GW for uplink and downlink transmission over the second access network; and releasing, via the PDN GW, resources associated with the first access network; wherein the first access network comprises either a third generation partnership project (3GPP) access network or a trusted non-3GPP Internet Protocol (IP) access network, and the second access network comprises either a third generation partnership project (3GPP) access network or a trusted non-3GPP Internet Protocol (IP) access network.