Open Access

On Multipath Routing in Multihop Wireless Networks: Security, Performance, and Their Tradeoff

EURASIP Journal on Wireless Communications and Networking20092009:946493

Received: 29 January 2009

Accepted: 1 June 2009

Published: 14 July 2009


Routing amid malicious attackers in multihop wireless networks with unreliable links is a challenging task. In this paper, we address the fundamental problem of how to choose secure and reliable paths in such environments. We formulate the multipath routing problem as optimization problems and propose algorithms with polynomial complexity to solve them. Game theory is employed to solve and analyze the formulated multipath routing problem. We first propose the multipath routing solution minimizing the worst-case security risk (i.e., the percentage of packets captured by attackers in the worst case). While the obtained solution provides the most security routes, it may perform poorly given the unreliability of wireless links. Hence we then investigate the multipath routing solution maximizing the worst-case packet delivery ratio. As a natural extension, to achieve a tradeoff between the routing security and performance, we derive the multipath routing protocol maximizing the worst-case packet delivery ratio while limiting the worst-case security risk under given threshold. As another contribution, we establish the relationship between the worst-case security risk and packet delivery ratio, which gives the theoretical limit on the security-performance tradeoff of node-disjoint multipath routing in multihop wireless networks.

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Authors’ Affiliations

Department of Computer Science and Networking, LTCI-UMR 5141 laboratory, CNRS-Telecom Paris Tech, Paris, France


© L. Chen and J. Leneutre 2009

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.