基于应用层组播的流媒体直播系统  

Live Streaming Media System Based on Application-layer-multicast

作　　者：程鹏[1] 吴秋峰[1] 戴琼海[1] 

机构地区：[1]清华大学自动化系,北京100084

出　　处：《计算机工程》2007年第21期210-212,共3页Computer Engineering

基　　金：国家自然科学基金资助重点项目(60432030)

摘　　要：应用层组播技术不需要网络层设备的支持,适合用于流媒体服务。在基于单播的流媒体直播系统基础上,设置应用层组播服务器,赋予客户端转发数据的能力,设计符合流媒体特点的应用层组播协议,形成了基于应用层组播的流媒体直播系统。按照该方案开发的原型系统运行状况表明,该设计方案能够稳定地提供流媒体服务。相比于基于单播的流媒体直播系统,采用应用层组播技术可以明显提高系统的用户数量,并保持较好的服务质量。Application layer multicast does not need the support of network layer equipment which is suitable to be used in streaming media systems. Based on the framework of existing live streaming media systems using unicast paths, application-layer-multicast based live streaming media system is proposed by building application layer multicast server, giving client software the ability to transfer received media streams, and designing specific multicast protocol for media streams. A demon system is developed which shows the proposed solution can provide stable and acceptable quality service. Compared to the systems using unicast paths, the demon system can serve much more users.

关 键 词：应用层组播 组播 流媒体直播 流媒体系统 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]