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Received:August 27, 2010 Revised:October 12, 2010
Received:August 27, 2010 Revised:October 12, 2010
中文摘要: 基于IP 多媒体子系统的流媒体系统采用的都是传统的客户端/服务器（Client/Server,C/S）架构，当大量用户同时请求流媒体服务时，中心媒体服务器将成为整个系统的性能瓶颈。在参考ETSI TISPAN 制定的IMS-based IPTV 架构基础上，给出了基于IMS 的可管理P2P 流媒体系统架构，并根据引入P2P 技术的系统需求设计了可管理P2P 流媒体应用服务器的软件模块结构及P2P 分发树的构建算法。在原有基于C/S 架构的流媒体应用服务器基础上，通过扩展集中管理和维护对等节点树P2P 模块实现了媒体上传节点的选择，并以直播业务为例进行了原型系统验证。测试结果显示该系统能够有效地将终端节点组织成P2P 流媒体分发网络，并有效地降低了媒体服务器的压力，提升了流媒体系统的性能。
中文关键词: IMS P2P IMS-based IPTV 流媒体 应用服务器
Abstract:IMS-based streaming media systems are used in C/S architecture. When numerous users request service simultaneously, the center streaming media server will become the bottleneck of system performance. After referring to ETSI TISPAN IMS-based IPTV architecture, we proposed an IMS manage P2P streaming system architecture, and designed an application server software module structure and P2P distribution tree construction algorithm according to the requirement of introduction P2P. Based on the original C/S architecture streaming application server, we implemented the selection upload node function by extending the centralized management and maintenance of trees P2P module, and verified prototype system in broadcast service. The test result shows that the streaming system can organize UE into P2P streaming media network effectively, and reduce the pressure of the media server and improve system performance.
keywords: IMS P2P IMS-based IPTV streaming application server
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肖诗泉,孙建伟,林镜华.IMS 可管理P2P 流媒体应用服务器的设计与实现.计算机系统应用,2011,20(5):14-20
XIAO Shi-Quan,SUN Jian-Wei,LIN Jing-Hua.Design and Implementation of an IMS Manage P2P Streaming Application Server.COMPUTER SYSTEMS APPLICATIONS,2011,20(5):14-20
肖诗泉,孙建伟,林镜华.IMS 可管理P2P 流媒体应用服务器的设计与实现.计算机系统应用,2011,20(5):14-20
XIAO Shi-Quan,SUN Jian-Wei,LIN Jing-Hua.Design and Implementation of an IMS Manage P2P Streaming Application Server.COMPUTER SYSTEMS APPLICATIONS,2011,20(5):14-20
