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Published:2005
移动端阅览
针对IPTV系统的试点建设中
遇到的诸多直接关系到用户体验质量、组网成本以及规模应用等技术问题
在对其中的两个关键问题———节点存储问题和直播业务的QOS问题进行探索的基础上
通过对几种常见的CDN节点存储方案所进行的性能与成本分析对比
得出了SAN方案是最佳选择的结论。随后
对影响直播业务QOS的两个关键问题———频道切换和组播丢包问题进行了深入的分析
并据此提出了切实可行的解决方案。
In our practice of the IPTV test system construction
many technical problems related directly to subscriber quality of experience
networking cost and the scale of operation are encountered.Two key problems among them
i.e.
the CDN node storage problem and the live broadcasting QoS problem
are investigated in this paper.Through performance and cost comparison between several popular CDN storage schemes
the superiority of SAN becomes clear.Channel switch and multicast packet loss
the two critical points involved in QoS of live broadcasting service
are discussed in detail
and practical measures to improve the associated QoS are then obtained based on the analysis.
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