分布式IMS架构与关键技术

Research on distributed IMS network architecture and its key techniques

作为未来基于IP电信网核心控制层面的IMS系统,如何提高其可靠性和负载能力已经成为业界关注的焦点。分布式计算是近年来计算机领域的一大重要研究成果。利用分布式的独有特性可以有效地解决传统集中式网络给系统带来的弊端,同时分布式系统也带来了路由效率低、可控性差的难题。提出了一种基于双环Chord资源定位的分布式IMS网络系统,从而有效解决集中式CSCF服务器"单点失效"和"性能瓶颈"的难题,实现IMS网元均质化,优化了系统路由效率,增强了系统的可控性、抗灾能力、扩展能力和负载均衡能力。

As the core control system of the future IP-level telecommunication network, IMS becomes more and more popu- lar, and how to improve its reliability and load capacity has become the industrial focus. Distributed computing is one of the important research achievements in recent years in computer science. Distributed system can use the unique characteristics to solve traditional centralized network system drawbacks, but at the same time, distributed system also brought problems of low routing efficiency and poor controllability. This paper proposes a distributed IMS network system based on the bieyclo chord distributed routing strategy so as to effectively solve the centralized CSCF server ＂single point of failure＂ and ＂per- formance bottleneck＂ problem. Meanwhile, this technique also realizes the IMS NE＇s homogenization, optimizes IMS routing efficiency, and enhances the system＇s controllability, resilience, scalability and load balancing ability.