A situation awareness scheme based on PUE detecting for cognitive radio

Cognitive radio technology enables secondary users to access licensed spectrum without interfere with the primary user in the network, however, at the same time, it also brings a lot of additional hidden security problems. In order to grasp the attack situation over a wide range when malicious users emulate the primary user to attack the channel timely and accurately, and display the spectrum situation correctly, this paper proposes a PUEA detection-based situation awareness scheme to study the interference situation of malicious users. Decision-makers can know the attack situation over a wide range better, by detecting the energy and location of PUE attacker, building the interference situation, and drawing the interference situation map. This method can separate the energy and position of the primary users from malicious users, so as to improve the accuracy of the spectrum map by fully exploiting the potential of spectrum holes, and improve the safety and system capacity of the channels.