Outlier Detection and Trust based Distributed Cooperative Spectrum Sensing in Internet of Vehicles

With the expansion of the market of new energy vehicles and the requirement of low carbon emission, the resource reuse of the Internet of Vehicles (IoV) has attracted much attention. Cognitive radio technology is used to solve the problem of spectrum shortage of IoV. As a classic attack, spectrum sensing data falsification attack can mislead others to make wrong decisions. Traditional solutions mainly consider fixed network, which is difficult to apply to the fast moving IoV. This paper proposes a distributed collaboration method based on outlier detection, which uses outlier detection, trust management and block chain to defense spectrum sensing data falsification attack. Simulation results show that compared with traditional distributed cooperative spectrum sensing schemes, this method has certain performance advantages and can effectively defend against spectrum sensing data falsification attack launched by malicious users in IoV