Channel selection strategy for jamming-resistant reactive frequency hopping in Cognitive WiFi network

Spectrum availability of the WiFi network is increased with the help of Cognitive radio (CR). The availability of spectrum is targeted by jamming attack. The jamming attack is addressed with the help of reactive frequency hopping technique. One of the important factors that support the frequency hopping technique is the channel selection strategy. The existing selection strategies are either based on the statistic of network traffic or random select. Statistic based methods includes the overhead of monitoring the network traffic and maintaining it. The random selection in turn increases the delay to choose a channel. To address the aforementioned problem two novel strategies are proposed: i) hybrid channel selection (HCS) and ii) Weight based channel selection (WCS) is proposed for efficient communication. The channel for frequency hopping is selected based on the HCS and WCS strategy from the available channels. These two strategies do not depend on the statistic of the network traffic and not completely randomized selection.

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