Patent ID: 8582529
Filing Date: 2013-11-12
Classification: H04W

Abstract:
1. A packet data network gateway (PDN GW) configured to perform a policy update during a handover operation of a wireless transmit/receive unit (WTRU) from a third generation partnership project (3GPP) access network to a non-3GPP access network, the PDN GW comprising: a transceiver configured to receive a proxy binding update message from an evolved packet data gateway (ePDG) indicating a handover; the transceiver further configured to send a policy update message to a policy and charging rules function (PCRF) in response to receiving the proxy binding update message; the transceiver further configured to receive a policy update confirmation message from the PCRF and send a proxy binding acknowledgement message to the ePDG, wherein the proxy binding acknowledgment message is configured to establish a proxy mobile internet protocol version 6 (PMIPv6) tunnel with the ePDG on an S the transceiver further configured to send a message to a serving gateway (GW) requesting a release of resources utilized by the PDN GW within the 3GPP access network upon receiving the policy update confirmation message.