Although a jamming attack is an important problem in Wi-Fi networks, there is no effective solution to this\nproblem yet. In this paper, we propose a new approach to resolve jamming attacks in Wi-Fi networks based on\nthe concept of channel hopping. If we assume that the attacker does not jam all the channels simultaneously, then\nit might be possible to circumvent a jamming attack by changing the channel. A channel hopping mechanism is\ndesigned so that the access point (AP) and a normal user can agree on the next channel with a high probability\nwithout pre-sharing of any secret information between the AP and a user node. The proposed scheme is evaluated\nthrough experiment in a test bed.
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