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• W2593877362 abstract "A risk metric for a wireless network under attack by jammers is proposed.A multi-period mixed integer programming interdiction model is developed.Signal strength trend is negative-exponential relative to jammers and locations.UCSD dataset indicates a fairly robust network in spite of jamming.Lagrangian relaxation often finds near-optimal solutions for jammer placement. We present an approach for measuring the vulnerability of a wireless network. Our metric, n-Robustness, measures the change in a networks total signal strength resulting from the optimal placement of n jammers by an attacker. Toward this end, we develop a multi-period mixed-integer programming interdiction model that determines the movement of n jammers over a time horizon so as to minimize the total signal strength of users during a sustained jamming attack. We compared several solution approaches for solving our model including a Lagrangian relaxation heuristic, a genetic algorithm, and a stage decomposition heuristic. We tested our approach on a wireless trace dataset developed as part of the Wireless Topology Discovery project at the University of California San Diego. We found that the Lagrangian approach, which performed best overall, finds a close-to-optimal solution while requiring much less time than solving the MIP directly. We then illustrate the behavior of our model on a small example taken from the dataset as well as a set of experiments. Through our experiments we conclude that the total signal power follows a sigmoid curve as we increase the number of jammers and access points. We also found that increasing access points only improves network robustness initially; after that the benefit levels off. In addition, we found that the problem instances we considered have an n-Robustness of between 39 and 69%, indicating that the value of the model parameters (e.g., number of jammers, number of time periods) has an effect on robustness." @default.
• W2593877362 created "2017-03-16" @default.
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• W2593877362 date "2017-05-01" @default.
• W2593877362 modified "2023-09-27" @default.
• W2593877362 title "Analyzing the robustness of an array of wireless access points to mobile jammers" @default.
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• W2593877362 doi "https://doi.org/10.1016/j.cie.2017.02.022" @default.
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