A new model for video traffic originating from multiplexed MPEG-4 videoconference streams

Aggelos Lazaris, Polychronis Koutsakis, Michael Paterakis

Performance Evaluation Journal, Elsevier Publ., Vol. 65, No. 1, 2008, pp. 51-70

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Overview

A model for the traffic generated when many MPEG-4 videoconference streams share a link, so networks can be dimensioned for video without replaying real traces.

Key contributions

Real multiplexed MPEG-4 traffic and the Pearson V / DAR(1) model are fed through the same buffer, and queueing delay and loss are compared.Real multiplexed MPEG-4 traffic and the Pearson V / DAR(1) model are fed through the same buffer, and queueing delay and loss are compared.
Real multiplexed MPEG-4 traffic and the Pearson V / DAR(1) model are fed through the same buffer, and queueing delay and loss are compared.

Abstract

Due to the burstiness of video traffic, video modeling is very important in order to evaluate the performance of future wired and wireless networks. In this paper, we first study the behavior of single MPEG-4 videoconference traces and investigate the possibility of modeling this type of traffic with well-known distributions. Our results show that the Pearson type V distribution is the best fit among all the examined distributions, for all the traces under study. However, the behavior of single videoconference traces can never be perfectly “captured” by a distribution generating independently frame sizes according to a declared mean and standard deviation, due to the high autocorrelation of videoconference; therefore none of the fitting attempts can achieve high accuracy. Still, our results on attempting to model single MPEG-4 videoconference sources provide significant insight and help to build a Discrete Autoregressive (DAR(1)) model to “capture” the behavior of multiplexed MPEG-4 videoconference movies from VBR coders. Based on our results and on comparisons with other existing approaches, we discuss the contribution of our proposed method to the field.

Cite this paper

@article{DBLP:journals/pe/LazarisKP08,
  author    = {Aggelos Lazaris and
               Polychronis Koutsakis and
               Michael Paterakis},
  title     = {A new model for video traffic originating from multiplexed {MPEG-4}
               videoconference streams},
  journal   = {Perform. Eval.},
  volume    = {65},
  number    = {1},
  pages     = {51--70},
  year      = {2008},
  url       = {https://doi.org/10.1016/j.peva.2007.02.004},
  doi       = {10.1016/j.peva.2007.02.004},
  timestamp = {Fri, 27 Dec 2019 00:00:00 +0100},
  biburl    = {https://dblp.org/rec/bib/journals/pe/LazarisKP08},
  bibsource = {dblp computer science bibliography, https://dblp.org}
}