On the Efficacy of Frequency Hopping in Coping With Jamming Attacks in 802.11 Networks
Frequency Hopping (FH) has been the most popularly considered approach for alleviating the effects of jamming attacks. The authors re-examine, the efficiency of FH based on both experimentation and analysis. Briefly, the limitations of FH are: the energy spill over between adjacent channels that are considered to be orthogonal, and the small number of available orthogonal bands. In a nutshell, the main contributions of the paper are: construction of a measurement-driven game theoretic framework which models the interactions between a jammer and a communication link employing FH. The model accounts for the above limiting factors and provides bounds on the performance of proactive FH in coping with jamming.