Anti-jamming defense mechanism in cognitive radios networks

Cognitive Radio is a technology that enables the spectrum sharing in an opportunistic fashion. However, as the development of cognitive radio technology occurs, its security problems like jamming arise. In this paper, we studied the jamming attack in cognitive radio networks. We sketched a scenario comprised by a primary user, a secondary user, and a spectrum jammer (namely attacker). Since the legitimate secondary user needs to transmit control messages and data in the available channels, we derived the best combinations of the number of control and data channels to the legitimate secondary user in face of different data applications considering the quality of service requirements reliability and throughput. We also considered the device with and without power constraints.