Method and system for implementing policy and charging control

Abstract

The invention discloses a method for realizing policy and charging control. The method comprises the following steps: a policy and charging enforcement function (PCEF) related to user equipment acquires (UE) address information of local policies and a home policy and charging rules function (hPCRF) between which a session is established from an AAA server or a home subscriber server (AAA / HSS) or the PCEF acquires the address information of the PCEF which establishes a session to establish the session with the hPCRF. Meanwhile, the invention discloses a system for realizing the strategy and charging control. The method and the system can help realize that AGW is consistent with the hPCRF which establishes a session with an anchor point gateway under a distributed PCC architecture; furthermore, when the UE switches between heterogeneous networks, the hPCRF used by a source network is ensure to be consistent with the hPCRF used by a target network after switching, which realizes that the same hPCRF can control different PCEFs in an IP session.

Description

technical field [0001] The invention relates to communication network strategy and charging technology, in particular to a method and system for realizing strategy and charging control. Background technique [0002] In the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) system, the policy and charging functions are implemented by the Policy and Charging Control (PCC, Policy and Charging Control) framework, which is a control quality of service (QoS, Quality of Service) and billing system architecture, which can be applied to different types of wireless and access networks, implement QoS guarantee based on service flow for user applications and charge user applications at the level of service flow. [0003] figure 1 It is a schematic diagram of the overall architecture of the PCC framework in the prior art. see figure 1 , the PCC framework mainly implements policy and charging control functions, including: application function (AF, Application...

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Problems solved by technology

[0018] The inventors of the present application found in the process of implementing the present invention that when the UE accesses the network for data transmission, it may need to use different PCEFs according to different services. Different PCEFs used by the UE in the network establish contact with the same hPCRF, that is, establish a session with the same hPCRF, so that when the UE attaches to the network or performs handover, the hPCRF address can be kept unchanged, so that the hPCRF maintains control over the entire policy, but In the existing evolved PCC architecture, how to keep the hPCRF address unchanged when the UE attaches to the network or performs handover has not been described in the prior art

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