【摘要】 为有助于路由协议的评估研究,设计了基于动态路径规划的车载自组网(VANET)车辆移动模型。为此模型设计了地图模块、车辆运动控制模块,并提出一种基于Dijkstra的动态路径规划算法。此模型可使车辆节点根据实时的道路状况,通过道路上的车辆相互共享实时交通信息,实时获取周围节点的运动情况,然后利用设计的动态路径规划算法选择最优路径,计算出高效的路径选择方案。实验表明,在不同的交通环境下和传统随机转弯以及最短路径模型相比,该模型中的节点能够更快速安全地到达目的地。更多还原

【Abstract】 For the research on evaluation of routing protocols,a vehicle mobility model for vehicular ad-hoc networks(VANET) based on dynamic path planning was designed.A map module and a vehicle motion control module were designed for this model,and a Dijkstra-based dynamic path planning algorithm was put forward.By using the model,a vehicle node can obtain the real-time conditions of the nodes around it based on the real-time traffic conditions and the share of the real-time information among the vehicles on the road,and then an optimum path can be chosen by using the proposed dynamic path planning algorithm,thus an effective path selection scheme can be calculated.The experimental results indicate that the proposed model can make the vehicle nodes arrive at the destination faster and safer in various traffic circumstances compared with the traditional models including the Random turn and the Shortest path.更多还原