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2010
Springer

Modeling TCP throughput: An elaborated large-deviations-based model and its empirical validation

9 years 4 months ago
Modeling TCP throughput: An elaborated large-deviations-based model and its empirical validation
In today's Internet, a large part of the traffic is carried using the TCP transport protocol. Characterization of the variations of TCP traffic is thus a major challenge, both for resource provisioning and Quality of Service purposes. However, most existing models are limited to the prediction of the (almost-sure) mean TCP throughput and are unable to characterize deviations from this value. In this paper, we propose a method to describe the deviations of a long TCP flow's throughput from its almost-sure mean value. This method relies on an ergodic large-deviations result, which was recently proved to hold on almost every single realization for a large class of stochastic processes. Applying this result to a Markov chain modeling the congestion window's evolution of a long-lived TCP flow, we show that it is practically possible to quantify and to statistically bound the throughput's variations at different scales of interest for applications. Our Markov-chain model...
Patrick Loiseau, Paulo Gonçalves, Julien Ba
Added 20 May 2011
Updated 20 May 2011
Type Journal
Year 2010
Where PE
Authors Patrick Loiseau, Paulo Gonçalves, Julien Barral, Pascale Vicat-Blanc Primet
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