Patent ID: 9264242
Filing Date: 2016-02-16
CPC Classification: H04L

Claim Text:
1. A system comprising: a home subscriber server zone having a plurality of first network elements and a first Diameter agent function server that routes first messages between the plurality of first network elements, wherein the first Diameter agent function server utilizes a Diameter protocol and maintains transaction state during a communication session without maintaining session state, and wherein the first Diameter agent function server selectively adjusts routing information for the first messages of the communication session without adjusting the first messages to enable providing subscriber management for the communication session, wherein the plurality of first network elements include a serving support node, a mobile management entity and a home subscriber server that are separate devices from the first Diameter agent function server; a policy and charging control zone having a plurality of second network elements and a second Diameter agent function server that routes second messages between the plurality of second network elements, wherein the second Diameter agent function server utilizes the Diameter protocol and maintains transaction and session state during the communication session, and wherein the second Diameter agent function server selectively adjusts the second messages to enable providing policy and charging control for the communication session; and a Diameter edge zone coupled with the home subscriber server zone and the policy and charging control zone, wherein the Diameter edge zone has a third Diameter agent function server that utilizes the Diameter protocol and maintains transaction and session state during the communication session, wherein the third Diameter agent function server adjusts third messages, and wherein the third Diameter agent function server routes the third messages to an external network.