01485nas a2200157   4500008004100000245005900041210005900100300001700159520093300176653002301109653000901132100002101141700002201162700002301184856012001207       2007                        eng d00aScalable Rate Control for Video Transmission over UMTS0 aScalable Rate Control for Video Transmission over UMTS  a 1315 - 11313 aThis 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.10aCongestion Control10aUMTS1 aBouras, Christos1 aAlexiou, Antonios1 aIgglesis, Vaggelis  uhttp://telematics.upatras.gr/telematics/publications/scalable-rate-control-video-transmission-over-umts?language=en