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generation internet.pdf
Computer Communications 23 (2000) 1336–1348
/locate/comcom
Traffic shaping for MPEG video transmission over the next
generation internet
a b, * c
M.F. Alam , M. Atiquzzaman , M.A. Karim
aElectro-Optics Program, University of Dayton, Dayton, OH 45469-0245, USA
bDepartment of Electrical and Computer Engineering, University of Dayton, Dayton, OH 45469-0226, USA
cDepartment of Electrical and Computer Engineering, University of Tennessee, Knoxville, TN 37996-2100, USA
Abstract
The Internet Engineering Task Force (IETF) has proposed the Guaranteed Service (GS) in the Integrated Services model with firm delay
and bandwidth guarantees. In this paper, we study the effects of a token bucket traffic shaper at the source on the transmission characteristics
of Motion Picture Experts Group (MPEG) compressed video streams over the GS. We develop an analytical model of the traffic shaper, and
also carry out numerical simulation of the transmission performance using MPEG trace data from several different video sequences. The
analytical model and the numerical simulation results are in excellent agreement. Our study provides a technique to determine the token
bucket parameters that have to be specified while setting up a GS flow. Our study reveals that the traffic shaping process gives an end
application a wide range of flexibility in controlling the delay. By choosing appropriate token bucket traffic shaper parameters, delay can be
reduced significantly without the need to reserve costly
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