文档介绍：华中科技大学
硕士学位论文
分布式移动增值业务计费系统可靠性研究与设计
姓名:孙学军
申请学位级别:硕士
专业:软件工程
指导教师:覃中平
20050424
摘要
移动增值服务是在通信技术计算机技术互联网技术不断发展融合的基础上
在人们对以信息为基础的各种应用需求快速增长的激励下在社会信息化水平日益提
高的前提下迅速发展的一种全新的服务方式
随着中国联通 CDMA 1X 网络的建成增值业务计费模式与以往话音计费有很大
的不同故对计费结算在增值业务支撑方面提出了新的要求针对 CDMA 1X 增值业
务计费系统的大并发量高可靠性及可扩展性的要求传统的集中式处理难以满足这
些要求而可以提供并行处理的分布式系统其巨大的灵活性可以应付增值业务爆炸式
的增长
通过对分布式系统的特点设计中出现的问题以及软件可靠性等方面的分析在
系统故障表现形式以及故障处理等方面进行了研究最终提出使用容错技术提高其可
靠性
在结合分布式增值业务计费系统进行可靠性设计时分别从系统的硬件和软件两
方面对系统进行设计在硬件可靠性设计方面采用双机容错冗余设计以及利用网络
通信机制进行硬件状态查询在软件方面采用对各个处理线程的状态检查点监控
当线程出现故障时能够恢复或者重启使得线程能够正常运行
在可靠性设计的基础上完成了分布式增值业务计费系统的可靠性实现通过性
能分析表明研究成果和所描述的设计思路和实现方法是合理的切实可行的对于
类似的分布式计费系统开发具有一定的参考价值
关键词计费分布式系统容错软件可靠性
I
Abstract
Mobile value-added service is based munication technology, computer
technology, technology are being developed and merged constantly, with people’s
encouragement to various kinds of the application demand to increase fast based on
information, the premise that the social information-based level improves day by day, a
kind of brand-new method of service to develop rapidly.
Build up work, CDMA 1X with , value-added service billing
mode and past speech have difference to billing, so settled account in billing and put
forward the new demand in supporting in value-added service. To great erupting
simultaneously amount, high reliability and request of the expansibility for CDMA 1X
value-added service billing system, traditional centralized difficult to satisfy with these
request. And the distributed system undertakes the parallel processing; its enormous
flexibility should deal with the exploding growth of value-added service.
By these researches on pattern of trouble expression, analysis on the characteristic of
the distributed system, problems in the design and software reliability, finally carry on
improving its reliability by fault-tolerant technology.
With the reliability designs of the distributed value-added service billing system, it
carrie