Design And Implementation Of Online Charging System For China Unicom

With the increasingly competition in telecom, the telecom market is increasingly saturated, the possibility of users leaving the telecom network is increasing, and the ARPU (Average Revenue per User) value produced by the traditional voice business is gradually reduced. In order to ensure the income, the operators have to prevent the prepaid and post-paid users from leaving the network and increase the ARPU value of the online user. As the later operators, the only way for China Unicom to achieve the goal of "One third of the world" is to response to the market demand rapidly, to optimize the marketing and product strategies flexibly, and to lift the channel size and capacity. Thus the functionality and performance of Billing system needs to be strong enough to provide strong support for the company to introduce new tariffs, new products, and new Combination of variable services.With the development of3G business and the issuance of4G licenses, the competition among domestic operators has become more fiercely. China Unicorn’s mature3G networks provide solid foundation for the rapid development of4G business. Therefore,the future target architecture of Chinese Unicorn’s business support system must support the fusion of3G,4G mobile business and the cross network and platform billing requirement. Network of3G service.According to the Chinese Unicom planning, billing mode of3G mobile users of prepaid billing mode will be accounted for80%-90%. Thus, how to provide real-time credit control and charge control for prepaid users is the problem to be solved as soon as possible.In this dissertation, according to the development plan of China Unicorn’s business support system and the business requirement of Chinese Unicorn’s, the Chinese Unicom service specification of online charging system and the China Unicom technical specification of online charging system is referenced, and the system design objectives and business requirements are discussed to construct the billing system that can match the requirement of business and facing the front line of production. The overall architecture of system, physical architecture, data architecture, interface design, function realization is studied. In the system design, the access control management, rating control, rating engine, periodic cost management, recharge management, life cycle management are considered. The requirement of high performance, high availability, high stability, high scalability, easy to develop and other non-functional requirements are also considered. At last, the main points of the Construction of the future China Unicorn’s online charging system are summarizes, laying the foundation for optimizing the software system.