Vehicle Trajectory-Based Location Verification for VANETs

The correct location information of vehicles plays an important role in the maintenance of the normal operation of vehicle Ad-hoc networks (VANETs) and the position spoofing from malicious node will seriously affect many applications of VANETs. Therefore, the detection of the position spoofing by location verification is an important issue. The traditional location algorithm in WSN and MANET no longer applies to VANETs. In this paper, a vehicle trajectory-based location verification scheme is proposed to locate and track continuously the vehicle and draw the trajectory. The inosculation is calculated and the position spoofing is detected by comparing with the trajectory and speed of the neighbor vehicle. The simulation results show that false negative rate and false positive rate are low. When the cheating distance of malicious node is 30 m, false negative and false positive rate are close to 0.