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Supporting multi-user real-time VBR video service using dynamic bandwidth management based on prediction

ISSN号：1005-8885
期刊名称：《中国邮电高校学报：英文版》
时间：0
分类：TP316[自动化与计算机技术—计算机软件与理论;自动化与计算机技术—计算机科学与技术] TN915.1[电子电信—通信与信息系统;电子电信—信息与通信工程]
作者机构：[1]Key Laboratory of Optical Communications and Lightwave Technologies, Beijing University of Posts and Telecommunications, Beijing 100876, China
相关基金：Acknowledgements This work was supported by the National Basic Research Program of China （2007CB310705）, the National Natural Science Foundation of China （60772024, 60711140087）, the Hi-Tech Research and Development Program of China （2007AA01Z255）, the NCET （06-0090）, the PCSIRT （IRT0609）, the ISTCP （2006DFAl1040）, and the 111 Project of China （B07005）.

作者： XU Zhi-yuan LI Hui LU Yue-ming JI Yue-feng[1]

关键词：动态带宽管理, 视频服务, 线性预测, VBR, 多用户, 实时, 带宽利用率, 基础, dynamic bandwidth management, MDI, QoS, real-time, time-domain adaptive linear predictor, VBR video

中文摘要：

实时的可变的位率(VBR ) 录像被期望拿多媒体应用程序的重要部分。然而，对 VBR 录像服务预备的丰富的挑战为它高交通的突然的特征被提起了。支持多用户有高带宽利用和服务(QoS ) 的满足的质量的即时 VBR 录像传播，这篇文章建议一个实际动态带宽管理计划。这个计划预报未来媒介由作为两 QoS 大小和互补管理参考采用适应线性预言者和使用的媒介交货索引的时间域(MDI ) VBR 录像评价。另外到支持多用户申请，优先级分类的调整策略也被提出。最后，一个试验台基于这个管理计划被建立。试验性的结果证明在这篇文章建议的计划与利用与保证的固定服务率和 QoS 相比由 20%60% 增加了的带宽是有效的。

英文摘要：

Real-time variable bit rate（VBR） video is expected to take a significant portion of multimedia applications.However,plentiful challenges to VBR video service provision have been raised for its characteristic of high traffic abruptness.To support multi-user real-time VBR video transmission with high bandwidth utilization and satisfied quality of service（QoS）,this article proposes a practical dynamic bandwidth management scheme.This scheme forecasts future media rate of VBR video by employing time-domain adaptive linear predictor and using media delivery index（MDI） as both QoS measurement and complementary management reference.In addition,to support multi-user application,an adjustment priorities classified strategy is also put forward.Finally,a test-bed based on this management scheme is established.The experimental results demonstrate that the scheme proposed in this article is efficient with bandwidth utilization increased by 20%-60% compared to a fixed service rate and QoS guaranteed.

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