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System and method for providing policy charging and rules function discovery in a network environment

  • US 9,621,362 B2
  • Filed: 02/03/2015
  • Issued: 04/11/2017
  • Est. Priority Date: 02/03/2015
  • Status: Active Grant
First Claim
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1. A method comprising:

  • establishing a first binding for a first session for a user equipment (UE), wherein the first binding includes, at least in part, policy charging and enforcement function (PCEF) connectivity information for a PCEF associated with a packet data network gateway hosting the first session for the UE, wherein the first binding is established by a first DIAMETER routing agent (DRA) serving the packet data network gateway in a first IP domain and wherein the PCEF connectivity information comprises an origin-host identifier and an origin-realm identifier for the packet data network gateway;

    receiving a request by a second DRA in a second IP domain associated with establishing a second session for the UE, wherein the request includes, at least in part, the PCEF connectivity information;

    forwarding the request from the second DRA to the first DRA based, at least in part, on the origin-realm identifier included in the PCEF connectivity information;

    determining a policy charging and rules function (PCRF) serving the first session for the UE based, at least in part, on the PCEF connectivity information; and

    binding the second session for the UE with the first session for the UE based, at least in part, on the PCEF connectivity information.

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