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In this paper, the authors examine one of the security issues in Vehicular Ad-hoc NETwork (VANETs): position-spoofing attack. They propose a novel Secure Location Verification (SLV) scheme to detect and prevent position-spoofing attack. SLV uses distance bounding, plausibility checks, and ellipse-based location estimation to verify the claimed location of a vehicle. Simulation results show that their proposed SLV scheme has a better performance than both Autonomous Position Verification (APV) and greedy forwarding algorithms. In recent years, there is significant progress in Intelligent Transportation Systems (ITS). The Dedicated Short Range Communications (DSRC) band has been allocated in the US at 5.9 GHz for Vehicle-To-Roadside (V2R) and Vehicle-To-Vehicle (V2V) communications.
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