Analysis And Design Of Performance Improvement In Convergent Billing System

China Mobile Sichuan Branch had transferred the support platform of Prepaid Service from IN(intelligent network) to BOSS(Business operation and support system). The market development of prepaid service has been improved by these changes. On the other hand, these changes bring more risk of revenue lost because the signaling billing system was replaced by a CDR billing system. At the same time, as the amount of customers increases with a high speed, and the charge-rate decreases continuously, the increasing speed of call detail records is much more than the increasing speed of incoming. At such a situation, we can enhance the capability of billing system by upgrading the hardware or improving the performance of software. Since the investment of hardware could be expansive, it becomes the best way to optimize the infrastructure of billing system to increase the system efficiency.According to the requirement of performance improving on convergent billing system, the infrastructure of current convergent billing system is analyzed. This article focuses on the interface between mobile switch network and convergent billing system, the internal process of convergent billing system and the synchronization of user info. Based on analysis on these three weak points, this article provides the method of performance tuning. And the performance of convergent billing system has been improved.This article describes the following fields:(1) System analysis: On studying the infrastructure of convergent billing system, this article analysis running efficiency and weak points of performance. And this article finds out the root cause of these weak points by system infrastructure, implement method and resource allocating. (2) System design: design the performance-tuning plan based on the results of system analysis.(3) Designing on the interface between MSC and BOSS.(4) Designing the internal process of convergent billing system.(5) Designing the process of customer rating information exchange.Though this project, the following achievements have been made:(1) The delay of CDR decrease from 20 minutes to 5 minutes.(2) The delay of billing process decrease from 60 minutes to 10minutes.(3) The throughput of disk IO decrease from 4TB/day to 1GB/day.(4) The capacity of convergent billing system increase from 100 million CDRs/day to 450 million CDRs/day.