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Published Articles >> Table of Contents >> Abstract
11th IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems (MASCOTS'03)
p. 279
Bottleneck Estimation for Load Control Gateways
Krishna Pandit, Darmstadt University of Technology
Jens Schmitt, Darmstadt University of Technology
Martin Karsten, University of Waterloo
Ralf Steinmetz, Darmstadt University of Technology
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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/MASCOT.2003.1240672
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| Abstract |
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Providing Quality of Service (QoS) to inelastic data
transmissions in a cost-efficient, highly scalable, and realistic
fashion in IP networks remains a challenging research
issue. In [14], a new approach for a basic, domain-oriented,
reactive QoS system based on so-called Load Control Gateways
has been proposed and experimentally evaluated.
These load control gateways base their load/admission control
decisions on observations of simple, binary marking algorithms
executed at internal nodes, which allows the
gateways to infer knowledge about the load on each path to
peer load control gateways. The original load control system
proposal utilizes rather simple, conservative admission
control decision criteria. In this paper, we focus on methods
to improve the admission control decision by using probability
theoretical insights in order to better estimate the load
situation of a bottleneck on a given path. This is achieved
by making assumptions on the probability distribution of
the load state of the nodes and analyzing the effect on the
path marking probability. We show that even with benevolent
assumptions the exact calculation is mathematically intractable
for a larger number of internal nodes and develop
a heuristic in the form of a Monte Carlo based algorithm.
To illustrate the overall benefit of our approach we give a
number of numerical examples which provide a quantitative
feeling on how the admission control decision can be
improved. Overall, we believe the result of this paper to be
an important enhancement of the admission control part of
the original load control system which allows to make better
usage of resources while at the same time controlling
statistically the guarantees provided to inelastic transmissions.
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 Additional Information
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Index Terms- admission control, reactive resource allocation,
ECN
Citation:
Krishna Pandit, Jens Schmitt, Martin Karsten, Ralf Steinmetz,
"Bottleneck Estimation for Load Control Gateways,"
mascots,
p. 279,
11th IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems (MASCOTS'03),
2003
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