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Analysis of TCP Performance over Mobile Ad Hoc Networks Part I: Problem Discussion and Analysis of Results (1999)

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by Gavin Holland , Nitin Vaidya
Citations:519 - 5 self
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BibTeX

@MISC{Holland99analysisof,
    author = {Gavin Holland and Nitin Vaidya},
    title = {Analysis of TCP Performance over Mobile Ad Hoc Networks Part I: Problem Discussion and Analysis of Results},
    year = {1999}
}

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Abstract

Mobile ad hoc networks have gained a lot of attention lately as a means of providing continuous network connectivity to mobile computing devices regardless of physical location. Recently, a large amount of research has focused on the routing protocols needed in such an environment. In this two-part report, we investigate the effects that link breakage due to mobility has on TCP performance. Through simulation, we show that TCP throughput drops significantly when nodes move because of TCP's inability to recognize the difference between link failure and congestion. We also analyze specific examples, such as a situation where throughput is zero for a particular connection. We introduce a new metric, expected throughput, for the comparison of throughput in multi-hop networks, and then use this metric to show how the use of explicit link failure notification (ELFN) techniques can significantly improve TCP performance. In this paper (Part I of the report), we present the problem and an analysis of our simulation results. In Part II of this report, we present the simulation and results in detail.

Keyphrases

tcp performance    mobile ad hoc network part    problem discussion    mobile ad hoc network    routing protocol    explicit link failure notification    link failure    large amount    specific example    multi-hop network    two-part report    particular connection    continuous network connectivity    physical location    part ii    simulation result   

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