Scalable rate control for video transmission over UMTS

Authors:
Antonios Alexiou;Christos Bouras;Vaggelis Igglesis
Affiliations:
Research Academic Computer Technology Institute, N Kazantzaki str, GR-26500 Patras, Greece and Computer Engineering and Informatics Department, University of Patras, Greece;Research Academic Computer Technology Institute, N Kazantzaki str, GR-26500 Patras, Greece;Computer Engineering and Informatics Department, University of Patras, Greece
Venue:
International Journal of Communication Systems
Year:
2007

Citing 0
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Optimal channel selection for real-time uplink data transmissions in ambulances

Journal of Mobile Multimedia

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Abstract

This paper proposes a mechanism for the congestion control for video transmission over Universal Mobile Telecommunications System (UMTS). Our scheme is applied when the mobile user experiences real time multimedia content and adopts the theory of a widely accepted rate control method in wired networks, namely equation-based rate control. In this approach, the transmission rate of the multimedia data is determined as a function of the packet loss rate, the round trip time and the packet size and the server explicitly adjusts its sending rate as a function of these parameters. Through a number of simulations and experiments we validate the correctness and measure the performance and efficiency of the mechanism. A first level of evaluation is carried out using the ns-2 simulator. A second level then validates the proposed mechanism in real world traffic scenarios by performing experiments in a commercial UMTS network. Copyright © 2006 John Wiley & Sons, Ltd.