Wireless communication network strategy and billing rule functional network element addressing method

Abstract

The method includes steps: when user equipment UE attached to wireless communication network in located place, UE registers on policy and charging rule functional (PCRF) net element; policy and charging execution functional (PCEF) module of access net element and / or exchange net element of network in located place transfers the ID information of PCRF registered by UE to UE, and UE saves the registered ID information of PCRF; UE registers on application functional (AF) net element of network in home place, and transfers the ID information of PCRF registered by UE to AF, and AF saves mapping relation between UE and PCRF. The invention guarantees that all service connections of UE are controlled by same PCRF, and AF and PCEF are addressed to same PCRF.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an addressing method for a policy and charging rule functional network element in a wireless communication network. Background technique [0002] At present, data communication has broad development prospects in the field of wireless communication. Such as figure 1 As shown, a typical wireless communication network generally consists of at least one wireless access network, at least one access network element and at least one switching network element. in, [0003] The wireless access network includes a certain number of base stations and their control devices, and the network is used to connect user equipment (User Equipment, UE, for example, mobile phones, wireless data cards, etc.); [0004] The access network element is used to connect to the wireless access network, perform user mobility management, and forward user data; [0005] The switching network element is us...

AI Technical Summary

Problems solved by technology

[0013] 1. When there are multiple policy and charging rule function network element PCRFs in the network, if the policy and charging enforcement function module PCEF uses the UE's PDN information to address the PCRF, and the AF uses the UE's IP address to address the PCRF, when Multiple services initiated by the UE are connected to different PDNs, which may cause these connections to be controlled by different PCRFs

The user's subscription information related to policies and charging rules will be saved repeatedly on multiple PCRFs, resulting in a waste of resources used by PCRFs

Multiple PCRFs respectively control multiple connections of a UE, making it very difficult to coordinate network resources between PCRFs, which may cause the sum of network resources used by these connections to exceed the maximum resource limit allowed by the UE

[0014] 2. If the PCRF is addressed using the UE's identity, the PCEF can only obtain the UE's network access identity (IMSI or MSISDN), and the AF can only obtain the UE's application layer identity (for example, QQ number or Internet phone number), This may cause PCEF and AF to address different PCRFs

[0015] 3. Even if UE's identity and packet data network information (or UE's IP address) are used at the same time, technical problem 1 cannot be avoided

[0016] 4. If figure 2 As shown, under the framework of the roaming network, the AF can only address the PCRF of the home network, and the PCEF on the access network element or switching network element of the roaming network can only address the PCRF of the roaming network. , the prior art does not provide a specific method for how to address between the PCRF in the roaming area and the PCRF in the home area

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