BroadCatch: a periodic broadcast technique for heterogeneous video-on-demand
BroadCatch: a periodic broadcast technique for heterogeneous video-on-demand
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BroadCatch：一种用于异构视频点播的周期性广播技术
DOI：
10.1109/tbc.2004.834202
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发表时间：
2004
影响因子：
4.5
通讯作者：
T. Do
中科院分区：
文献类型：
--
作者：
M. Tantaoui;K. Hua;T. Do
许多基本的多媒体应用依赖于视频点播技术来向不同的用户传送视频。已经提出了一些周期性广播技术，用于成本有效地实施这种系统。这些技术中的大多数将尝试最小化服务器带宽、用户带宽、用户存储、用户对视频的访问延迟，或者上述参数中的一些的组合。另一方面，这些广播方案的实施策略将需要所有用户的最小带宽要求。多分辨率技术通过牺牲用户视频质量来解决异质性问题。在本文中，我们考虑了一种不同的方法，不具有这种缺点。在服务器端使用增量信道设计和特定的广播时间表，用户可以在一系列带宽中选择用于下载视频，但以访问延迟为代价，而不是以视频质量为代价。我们证明了所提出的解决方案的正确性，提供数学分析，以证明其异构的行为，目前的性能研究，以说明其效率。
Many essential multimedia applications rely on video-on-demand technology to deliver a video to different users. A number of periodic broadcast techniques have been proposed for the cost-effective implementation of such systems. Most of these techniques would either try to minimize the server bandwidth, user bandwidth, user storage, user access latency to the video, or a combination of some of the aforementioned parameters. On the other hand, the implementation strategies of these broadcast schemes would necessitate a minimum bandwidth requirement for all users. Multi-resolution techniques address the heterogeneity problem by sacrificing user video quality. In this paper, we consider a different approach that does not possess this disadvantage. Using an incremental channel design at the server side, and a specific broadcast schedule, users can choose among a range of bandwidths to use to download the video at the cost of their access latency and not to the video quality. We prove the correctness of the proposed solution; provide mathematical analysis to demonstrate its heterogeneous behavior, and present performance studies to illustrate its efficiency.