Online charging method, device and system based on number portability service

Abstract

The present invention relates to the field of communications technologies, and in particular, to an online charging method, apparatus, and system based on a number portability service. When a calling user equipment, UE, in an IP multimedia subsystem, IMS, network initiates a call to a called UE, after receiving an invite message sent by a call session control function, CSCF, entity in the IMS network, an application server, AS ,in the IMS network queries number portability information corresponding to a number of the called UE and sends a number of the calling UE and the found number portability information to an online charging system, OCS, in the IMS network, so that the OCS is capable of performing charging authentication for the calling UE according to the number portability, NP, information and the number of the calling UE. When the called UE has changed a subscription network and subscribed to an NP service, the OCS is thus capable of correctly performing charging authentication. In an embodiment, the NP information includes the routing number, and the OCS determines the recipient network to which the called UE belongs according to the routing number, determines a charge rate of a call between the IMS network and the recipient network, and performs the charging authentication for the calling UE according to the number of the calling UE and the charge rate. In an alternative embodiment, the NP information includes the port-in identity. According to the port-in identity and the number of the calling UE, the OCS performs the charging authentication for the calling UE on the basis of a charge rate of an intra-network call in the IMS network.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an online charging method, device and system based on number portability services. Background technique [0002] A number portability (Number Portability, NP for short) service is a service in which a user can continue to use an original number in a currently subscribed network after changing a contracted network. Through the NP service, users can easily replace the contracted network. At present, the telecommunications management bureaus of many countries and regions require all telecommunications operators to provide NP services for fair competition, so as to avoid the inconvenience caused by users needing to change numbers after changing the contracted network. [0003] Wherein, the network that the user currently subscribes to is also called a recipient network (RecipientNetwork), and the network that the user signs up for the first time is called a donor network (Don...

AI Technical Summary

Problems solved by technology

For the called UE that has changed the subscription network and subscribed to the NP service, although the number of the called UE has not changed, the communication network to which the called UE belongs has changed. Therefore, the OCS performs charging authentication on the calling UE. Errors are likely to occur when

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