802.11a, b, and g standards were designed for
\ndeployment in cooperative environments, and hence do not
\ninclude mechanisms to protect from jamming attacks. In
\nthis paper, we explore how to protect 802.11 networks from
\njamming attacks by having the legitimate transmission hop
\namong channels to hide the transmission from the jammer.
\nUsing a combination of mathematical analysis and prototype
\nexperimentation in an 802.11a environment, we explore
\nhow much throughput can be maintained in comparison
\nto the maintainable throughput in a cooperative, jam-free
\nenvironment. Our experimental and analytical results show
\nthat in today\u2019s conventional 802.11a networks, we can achieve
\nup to 60% of the original throughput. Our mathematical
\nanalysis allows us to extrapolate the throughput that can be
\nmaintained when the constraint on the number of orthogonal
\nchannels used for both legitimate communication and for
\njamming is relaxed.<\/p>\n","protected":false},"excerpt":{"rendered":"
802.11a, b, and g standards were designed for deployment in cooperative environments, and hence do not include mechanisms to protect from jamming attacks. In this paper, we explore how to protect 802.11 networks from jamming attacks by having the legitimate transmission hop among channels to hide the transmission from the jammer. 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