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Method and apparatus for resource management in handover operation

  • US 8,817,741 B2
  • Filed: 06/20/2008
  • Issued: 08/26/2014
  • Est. Priority Date: 06/22/2007
  • Status: Active Grant
First Claim
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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.

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