基于RCBR的流VBR视频业务动态带宽分配实证分析

The 13th IEEE Workshop on Local and Metropolitan Area Networks, 2004. LANMAN 2004. Pub Date : 2004-04-25 DOI:10.1109/LANMAN.2004.1338425

M. Kishore, Yao-Jen Liang

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引用次数: 0

摘要

视频点播(VoD)是通过宽带互联网观看视频点播服务提供商直接发送的存储视频的服务。通常，带宽保留级别是使用在整个视频播放期间保持静态的流量描述符来定义的。重新协商的恒定比特率(RCBR)机制[MSD97]指出了使用静态保留级别的浪费，并提出了在任何多媒体传输会话期间定期重新协商的动态带宽分配。由于这一机制仅通过模拟和理论分析进行了检验，因此我们在真实的VoD服务器和客户端测试台上进行了实证研究，以研究其性能。研究表明，在高带宽约束下，RCBR在丢包率方面明显优于传统的CBR。

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An empirical analysis of dynamic bandwidth allocation using RCBR for streaming VBR video services

Video-on-demand (VoD) is a service that allows people to view stored videos sent directly streaming from a VoD service provider over the broadband Internet. Conventionally, bandwidth reservation levels are defined using traffic descriptors that remain static over the entire playback duration of the video. Renegotiated constant bit rate (RCBR) mechanism [MSD97] indicated the wastefulness of using static reservation levels and proposed dynamic bandwidth allocation with periodically bandwidth renegotiation during any multimedia transmission sessions. Since this mechanism has been examined only via simulations and theoretical analysis, we have conducted empirical studies on a real test-bed with a VoD server and clients to study its performance. We show that under heavy bandwidth constraints the performance of RCBR is significantly better than traditional CBR in terms of packet loss rate.

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The 13th IEEE Workshop on Local and Metropolitan Area Networks, 2004. LANMAN 2004.

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