Pyramid broadcasting for video-on-demand service
Pyramid broadcasting for video-on-demand service
复制标题
视频点播服务的金字塔广播
DOI：
10.1117/12.206080
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
T. Imielinski
中科院分区：
文献类型：
--
作者：
S. Viswanathan;T. Imielinski
提出的金字塔广播方案是一种新的呈现视频点播服务的方式。在金字塔广播中，最频繁请求的电影在广播网络上被多路复用，导致访问时间和有效带宽利用率的根本改善。这是通过在接收端使用存储来实现的。随着可用带宽的增加，访问时间的改善是指数的，而不是传统广播的情况下的线性改善。网络的带宽越大，由于金字塔广播的接入时间增益越好。随着访问时间要求的降低，在传统广播的情况下的带宽要求线性地增加，而在金字塔广播的情况下的带宽要求仅以几何方式增加。我们提供了分析和实验评估的基础上，它的实施在以太网局域网的金字塔广播，说明它的优点。
The proposed scheme of pyramid broadcasting is a new way of rendering Video On Demand service. In pyramid broadcasting, the most frequently requested movies are multiplexed on the broadcast network, resulting in radical improvement of access time and efficient bandwidth utilization. This is achieved by using storage at the receiving end. As the available bandwidth increases, the improvement in access time is exponential as opposed to just linear improvement as in the case of conventional broadcasting. The larger the bandwidth of the network, the better the access time gain due to pyramid broadcasting. As the access time requirement decreases, the bandwidth requirement in the case of conventional broadcasting increases linearly while the bandwidth requirement in the case of pyramid broadcasting increases only logarithmically. We provide analytical and experimental evaluations of pyramid broadcasting based on its implementation on ethernet LAN, illustrating its advantages.