Method and device for resisting spectrum sensing data falsification through distributed cognitive radio network

• Main Authors: ZHENG BO, LIU FAN, LI FANGWEI, YUAN YINGHUI, DENG WU, NIE YIFANG
• Format: Patent
• Language: English
• Published: 13.05.2015
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION; WIRELESS COMMUNICATIONS NETWORKS

The invention relates to the technical field of cognitive radio safety and discloses a method and a device for resisting spectrum sensing data falsification through a distributed cognitive radio network, wherein the method comprises the following steps: a secondary user perceives signal energy of a primary user; the secondary user interacts local perceptual information with a neighbor node and calculates comprehensive credibility of the neighbor node according to a cognitive state value of the neighbor node; the secondary user performs iteration on the cognitive state value according to a comprehensive credibility weighting consistence scheme of the neighbor node until state values of all nodes are converged; the secondary user compares the converged state value with a detection threshold and judges whether an existing channel is occupied or not by the primary user. The method can be used for resisting spectrum sensing data falsification launched by a malicious user, improving spectrum sensing safety in the cognitive network and resisting SSDFs of various forms very well on the condition of not having priority knowledge of number of intruders, a falsification strategy, and the like.