Research And Implement Of Online Charing System In PCC Architecture

IP Multimedia Subsystem (IMS) is proposed by 3rd Generation Partnership Project based on Release 5 for supporting the IP multimedia services. It's very important for the policy and charging control in the part of research in IMS.In Release 7, Policy Decision Function and Flow Based Control converge towards each other and form the Policy Control and Charging (PCC) architecture. PCC architecture aims to provide differentiated services, as well as user traffic bearer resource guarantee and charging policy for traffic flow, and has been widely accepted.At the same time, as 3G Times is coming, we have more and more services to choice, and how to establish a efficient online charing system has became a very important question to operators. So 3GPP devotes a huge resource on the solution of provide new services and proposes an reference architecture named Online Chrging Systems. But this standard doesn't show detailes about how to implement the system and lack distinctly instruction to operators.So the purpose of this paper is implement an online charing system which can interactive with Charging Trigger Function based on PCC architecture.This paper will give details of the solution, included design of system model, data model and so on. For simulate a whole online charing scenario, this paper will give the design and solution of Charging Trigger Function. At the end of this paper, based on the understand of charing architecture, the author will give a optimization of procedure for online charging system in 3GPP.