[25 May 2015] A master student at RTSLAB was awarded the best thesis
award from IDA - Klervie Toczé. more ...
[26 May 2014] A bachelor student at RTSLAB was awarded the best thesis
award from IDA - Simon Andersson. more ...
[31 May 2012] A masters student at RTSLAB was awarded the best thesis
award from IDA - Ulf Magnusson. more ...
[27 February 2008] A masters student at RTSLAB was awarded the best thesis
award from IDA - Johan Sigholm. more ...
[03 March 2004] A masters student at RTSLAB was awarded the best thesis
award from IDA - Tobias Chyssler. more ...
[01 Jul 2003] For second year in a row a masters student at RTSLAB was awarded the best thesis
award from SNART - Mehdi Amirijoo. more ...
Master Thesis - Past Projects - Abstract
Management of QoS in Distributed MPEG Video Systems
With the advance in computer and network technologies, multimedia systems
and Internet applications are becoming more popular. As broadband
network is prevailing, more clients are able to watch streaming videos or to
play multimedia data over the Internet in real-time. Consequently, there
is an increasing demand in the Internet for streaming video systems. As
the run-time environment of such applications tends to be dynamic, it is
imperative to handle transient overloads effectively. The goal of this
to develop an algorithm that would provide a robust and controlled behavior
of the video system so that important data is delivered on time to the
video clients. In order to address this problem, we propose a QoS-sensitive
approach that is using the technique of imprecise computation and is based
on the principle of tuning. Our algorithm is aimed to provide the best
QoS to the clients in the current available network capacity. As an
environment to work with we have used a video system called QMPEGv2.
A set of experiments were carried out to evaluate the performance of the
algorithm. Through experiments, we show that the system can adapt to
dynamic changes in network conditions and provide almost always the best
possible QoS to its clients. Guaranteeing a certain minimal QoS level to all
clients is only possible when, in run time, an admission controller adjusts
the number of clients admitted to the system according to the capacity of
the network and video servers.
Keywords: Quality of Service, Distributed Video Systems, Imprecise Computation, Feedback Control Scheduling, Congestion, MPEG Compression Standard
Author(s): Natalia Dulgheru
Contact: Jörgen Hansson
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