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Hierarchical cache optimization in IPTV networks

机译:IPTV网络中的分层缓存优化

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In an IPTV network, Video on Demand and other video services generate a large amount of unicast traffic from the Video Hub Office (VHO) to subscribers and, therefore, require additional bandwidth and equipment resources in the network. To reduce this traffic and overall network cost, a portion of the video content (the most popular titles) may be stored in caches closer to subscribers, e.g., in a Digital Subscriber Line Access Multiplexer (DSLAM), a Central Office (CO), or in an Intermediate Office (IO). The problem is where and how much cache memory should be allocated in order to achieve maximum cost effectiveness. In this paper, we consider two approaches to solve this problem and analyze the factors that affect this solution. The analysis shows that hierarchical distributed caching can save significant network cost.
机译:在IPTV网络中,视频点播和其他视频服务会生成大量从视频中心办公室(VHO)到订户的单播流量,因此需要网络中的其他带宽和设备资源。为了减少这种流量和总体网络成本,可以将一部分视频内容(最受欢迎的标题)存储在靠近用户的缓存中,例如,在数字用户线路访问多路复用器(DSLAM),中央局(CO),或在中级办公室(IO)中。问题是应在何处分配多少高速缓存以达到最大的成本效益。在本文中,我们考虑了两种解决此问题的方法,并分析了影响该解决方案的因素。分析表明,分层分布式缓存可以节省大量的网络成本。

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