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System and method for providing mobility across access technologies in a network environment

  • US 8,195,778 B1
  • Filed: 12/19/2009
  • Issued: 06/05/2012
  • Est. Priority Date: 12/19/2009
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • receiving a packet for a flow associated with a subscriber;

    determining if a context exists for the flow by using a handover query to a packet gateway, wherein authentication and security parameters are negotiated before determining whether the context exist for the flow;

    assigning an Internet protocol (IP) address for the subscriber, by the packet gateway, in response to a home agent element not having the context for the flow; and

    creating, by the packet gateway, a session for the subscriber, wherein the session is created using inter-process communication between the home agent element and the packet gateway, and wherein the session is maintained for a handover involving the subscriber roaming between a Long Term Evolution (LTE) network and a code division multiple access (CDMA) network, wherein the handover is indicated in a context transfer, and wherein the IP address is marked as being originated at the home agent element.

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