摘要
会议初始化协议(SIP)凭借其简单,易于扩展等优点,已成为未来网络发展的重要应用协议.它采用Client/Server(C/S)的结构体系,当系统业务量增大时,系统容易达到性能瓶颈,成为其技术发展的障碍.基于分布式点对点(P2P)网络的去中心化特征,正好弥补了SIP的这一缺陷.因此,首先提出了一种基于P2P网络架构的SIP视频会议系统模型,将现有SIP视频会议系统的C/S架构改进成为P2P的混合网络体系结构.这既发挥了P2P无中心的优越性,又体现了SIP的C/S模式的优点.其次,阐述了该系统主要功能模块以及相关程序设计.最后介绍了该系统的主要信令工作流程.
Session Initiation Protocol （SIP）is a key protocol for next multimedia communication networks with its simplicity and extensibility. Due to its Client/Server（C/S）architecture, when the system traffic increases, the system performance will emerge a bottleneck easily, which is a technological obstacle of SIP application and development. The paper presents a novel architecture model of SIP video conference system based on P2P network, which improves present C/S architecture based SIP to mixed network architecture based P2P. It not only has advantages of distributed architecture like P2P system, but also has advantages of C/S architecture in the SIP system. Then the paper discusses the main functional modules and programming design. In the end, the important signaling operation flow is introduced.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第4期519-523,共5页
Journal of Xiamen University：Natural Science
