1. Wavelet-Based Smoothing and Multiplexing of VBR Video Traffic
- Author
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TEXAS A AND M UNIV COLLEGE STATION DEPT OF ELECTRICAL ENGINEERING, Ye, Dejian, Xiong, Zixiang, Shao, Huai-Rong, Wu, Qiufeng, Zhu, Wenwu, TEXAS A AND M UNIV COLLEGE STATION DEPT OF ELECTRICAL ENGINEERING, Ye, Dejian, Xiong, Zixiang, Shao, Huai-Rong, Wu, Qiufeng, and Zhu, Wenwu
- Abstract
Although VBR coding is more efficient than CBR coding, the burstiness of VBR video traffic brings great difficulty to network resource management. To address this problem, we propose a novel wavelet-based traffic smoothing (WTS) algorithm. Unlike existing algorithms, which only have one resolution, the WTS algorithm has the multiresolutional property that is preferable for smoothing VBR video traffic that exhibits a self-similar behavior. WTS allows traffic smoothing at multiple resolutions and the best transmission schedule is searched as a pruned subtree of a full binary tree, which corresponds to the original VBR video traffic. WTS optimizes several metrics simultaneously for both the single and multiple-flow case while traditional algorithm only optimize one or two metrics for a single flow. The computation complexity of the WTS algorithm is also lower.
- Published
- 2001