Patent ID: 9621362
Date: 2017-04-11
CPC Classifications: H04L,H04M,H04W

Claim:
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.