混合机会主义和基于方向的路由算法

Hybrid Opportunistic and Direction-based Routing Algorithm

在VANET中,由于网络拓扑不稳定、时延要求严格等VANET特性,因此,最优路由方案对于VANET改善搜索效率和端到端延迟等性能指标至关重要。文章提出混合机会主义和基于方向的路由协议来优化VANET路由中存在的问题。首先设计算法计算起始节点与目标节点之间的方向因素,尽可能的减少路径所占用的节点数。其次,通过传输Hello数据包来获得节点间链路质量,从而选择高质量链路进行传输。利用NS3和Matlab对算法进行仿真分析,得出提出的混合机会主义和基于方向的路由协议在节点数、链路传输质量以及时延方面具有一定的优势。

In VANET,due to VANET characteristics such as unstable network topology and strict delay requirements,the optimal routing scheme is crucial for VANET to improve performance indicators such as search efficiency and end-to-end delay.This paper proposes a hybrid opportunistic and direction-based routing protocol to optimize the problems in VANET routing.First,design an algorithm to calculate the direction factor between the starting node and the target node,and reduce the number of nodes occupied by the path as much as possible.Secondly,the quality of the link between nodes is obtained by transmitting Hello packets,so that high-quality links are selected for transmission.Using NS3 and Matlab to simulate and analyze the algorithm,it is concluded that the proposed hybrid opportunistic and direction-based routing protocol has certain advantages in terms of number of nodes,link transmission quality and delay.