基于车辆运动轨迹的VANETs位置验证

正确的位置信息在维护VANETs的正常运行扮演着重要的角色, 恶意节点的位置欺骗将严重影响VANETs诸多应用. 通过对节点的位置验证以检测节点的位置欺骗是VANETs重要的研究领域. 针对VANETs中车辆移动的相对速度较高, 网络拓扑结构频繁变化, 传统WSN和MANET中的位置验证方案不再适用于VANETs, 提出基于车辆的运动轨迹位置验证方案, 采用最小二乘法对车辆进行连续定位跟踪, 并绘制其行驶路线, 与邻居车辆的行驶路线、速度相比较, 计算其吻合度, 检测位置欺骗. 仿真结果表明, 该方案有较低的漏警率和虚警率, 当恶意节点的欺骗距离达到30m时, 漏警率和虚警率接近于0.

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.