A Discrete-Time Model of TCP Reno with Background Traffic Interference

Authors:
A. E. Kamal
Affiliations:
-
Venue:
MASCOTS '02 Proceedings of the 10th IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems
Year:
2002

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Discrete-time modeling of TCP Reno under background traffic interference with extension to RED-based routers

Performance Evaluation - Special issue: Distributed systems performance

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Abstract

This paper introduces a discrete-time model whichcaptures the essential protocol features of the congestion controlmechanism used by the TCP Reno protocol, subject to interferencefrom other sources. Under this model, a single target sessionis modeled according to the TCP Reno mechanism, including fastretransmit and fast recovery. At the same time, other sources aremodeled as a background process using a modified discrete batchMarkov arrival process. In order to capture all the TCP Reno protocolfeatures, two levels of Markov process modeling are used: amicroscopic level, at the packet transmission time boundaries, anda macroscopic one, at the start of the new transmission windows.Several performance measures are derived, and numerical exampleswhich demonstrate the protocol features are presented.