Skip to main content

Dimensioning Method for Conversational Video Applications in Wireless Convergent Networks

Abstract

New convergent services are becoming possible, thanks to the expansion of IP networks based on the availability of innovative advanced coding formats such as H.264, which reduce network bandwidth requirements providing good video quality, and the rapid growth in the supply of dual-mode WiFi cellular terminals. This paper provides, first, a comprehensive subject overview as several technologies are involved, such as medium access protocol in IEEE802.11, H.264 advanced video coding standards, and conversational application characterization and recommendations. Second, the paper presents a new and simple dimensioning model of conversational video over wireless LAN. WLAN is addressed under the optimal network throughput and the perspective of video quality. The maximum number of simultaneous users resulting from throughput is limited by the collisions taking place in the shared medium with the statistical contention protocol. The video quality is conditioned by the packet loss in the contention protocol. Both approaches are analyzed within the scope of the advanced video codecs used in conversational video over IP, to conclude that conversational video dimensioning based on network throughput is not enough to ensure a satisfactory user experience, and video quality has to be taken also into account. Finally, the proposed model has been applied to a real-office scenario.

Publisher note

To access the full article, please see PDF

Author information

Affiliations

Authors

Corresponding author

Correspondence to Alfonso Fernandez-Duran.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and Permissions

About this article

Cite this article

Fernandez-Duran, A., Perez Leal, R. & Alonso, J.I. Dimensioning Method for Conversational Video Applications in Wireless Convergent Networks. J Wireless Com Network 2008, 328089 (2007). https://doi.org/10.1155/2008/328089

Download citation

Keywords

  • Video Quality
  • Network Throughput
  • Video Code Standard
  • Advanced Video Code
  • Advanced Video