Reducing the degrading effect of hidden terminal interference in MANETs

Authors:
Stylianos Papanastasiou;Lewis M. MacKenzie;Mohamed Ould-Khaoua
Affiliations:
University of Glasgow, Glasgow, U.K.;University of Glasgow, Glasgow, U.K.;University of Glasgow, Glasgow, U.K.
Venue:
MSWiM '04 Proceedings of the 7th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
Year:
2004

Citing 2
Cited 0

Revealing the problems with 802.11 medium access control protocol in multi-hop wireless ad hoc networks

Computer Networks: The International Journal of Computer and Telecommunications Networking
Understanding bandwidth-delay product in mobile ad hoc networks

Computer Communications

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Abstract

A number of recent research studies have explored ways to improve TCP throughput in IEEE 802.11 mobile ad hoc networks. In particular, hidden terminal effects caused by interference have been shown to degrade TCP performance and have been dealt with, in previous work, by restricting the maximum congestion window size. We have pursued an alternative approach and have developed a TCP variant which adjusts the sending rate increase to achieve competitive goodput for TCP connections. In this paper, we demonstrate that a slower sending rate increase during the congestion avoidance phase of TCP leads to improved performance for TCP Reno while eliminating the negative effects inherent in restricting the maximum congestion window size. A performance comparison against existing solutions under various mobility conditions is also included.