基于高可靠束路径的车载自组网路由规划算法

为提高车载自组网端到端路径存活期，提出一种基于高可靠束路径的路由规划算法LGGR。该算法通过分发网络连通性信息，使每个十字路口的节点可以感知与相邻十字路口节点的连通情况，通过计算十字路口的度、路径段存活期和自逾期确定最佳束路径，从而保证网络高连通性，延长路径存活期。仿真结果表明，LGGR的性能优于AODV、GPSR等算法。

Route Planning Algorithm Based on High-reliable Beam Path in Vehicular Ad Hoc Networks

In order to improve the end-to-end lifetime of paths in Vehicular Ad Hoc Networks（VANET）,this paper proposes a route planning algorithm named LGGR based on high-reliable beam path.Every node in an intersection learns if it is connected with those nodes in a neighbored intersection by disseminating connectivity information.The degree of intersections and lifetime and self-heal time of route segments are considered as key measurements to select forward nodes.The forward node with high network connectivity and long path lifetime is selected,and a high-reliable beam path is formed after a lot of route decisions.Simulation results reveal that LGGR outperforms traditional algorithms,such as AODV,GPSR.