Empirical predictor of TCP throughput on a multihop wireless path

Authors:
Anna Chaltseva;Evgeny Osipov
Affiliations:
Department of Computer Science and Electrical Engineering, Luleå University of Technology;Department of Computer Science and Electrical Engineering, Luleå University of Technology
Venue:
ruSMART/NEW2AN'10 Proceedings of the Third conference on Smart Spaces and next generation wired, and 10th international conference on Wireless networking
Year:
2010

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Abstract

This paper addresses a question of predicting TCP throughput over a multihop wireless path. Since it is useful for a variety of applications it is desirable that TCP throughput prediction technique introduces low-overhead while avoiding active measurement techniques. Analytical derivation of the throughput predictor for multihop wireless networks is difficult if not impossible at all due to complex cross-layer dependencies. In this article we statistically analyze the significance of parameters on physical, MAC and transport layers in a multihop wireless chain and empirically derive a practically usable throughput predictor. The resulting model allows prediction of the throughput with less than 2% error.