Data communications and distributed networks (2nd ed.)
Data communications and distributed networks (2nd ed.)
Asynchronous Transfer Mode Networks: Performance Issues,Second Edition
Asynchronous Transfer Mode Networks: Performance Issues,Second Edition
Digital Moving Pictures: Coding and Transmission on ATM Networks
Digital Moving Pictures: Coding and Transmission on ATM Networks
Packet Video: Modeling and Signal Processing
Packet Video: Modeling and Signal Processing
Digital Compression of Still Images and Video
Digital Compression of Still Images and Video
MPEG Video Compression Standard
MPEG Video Compression Standard
Digital Image Processing
Efficient End-to-End Transport of Soft Real-Time Applications
NETWORKING '00 Proceedings of the IFIP-TC6 / European Commission International Conference on Broadband Communications, High Performance Networking, and Performance of Communication Networks
Networking requirements for interactive video on demand
IEEE Journal on Selected Areas in Communications
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In this work we investigate a promising scheduling algorithm referred to as the Deadline Credit (DC) algorithm, which exploits the available bandwidth and buffer space in communication networks to serve a diverse class of prerecorded video applications. We provide simulation results when the DC algorithm is applied to a hierarchical architecture distributed VoD network, which fits the existing tree topology used in today's cable TV systems. The issues investigated via the simulations are: the system utilization, the influence of the buffer space on the delivered QoS, and the fairness of the scheduling mechanism. We examine cases with homogenous and diverse video streams. We also contribute a modification to the DC algorithm so that in cases when the video applications have different displaying periods, the video streams obtain a fair share of the network's resources. Finally, we validate our results by simulating actual videos encoded in MPEG-4 and H.263 formats.