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车载自组织网络面临车辆移动速度快、拓扑变化频繁等问题,而机会转发策略利用无线信道天然的广播特性相比于传统的确定性转发策略能更加有效应对复杂的城市环境。本文提出一种只需利用单跳邻居信息的多路由度量机会路由协议,该协议能够合理安排邻居车辆的转发优先级,同时根据车辆移动特性对候选集进行了进一步优化。仿真结果表明,本文所提出的路由协议能够显著提升单播路由性能。
In-vehicle ad hoc networks face the problems of fast moving vehicles and frequent topological changes. However, the opportunistic forwarding strategy utilizes the natural radio characteristics of wireless channels to deal with complex urban environments more effectively than the traditional deterministic forwarding strategies. This paper proposes a multi-path metric routing protocol that uses only one-hop neighbor information. This protocol can reasonably arrange the forwarding priorities of neighboring vehicles and further optimizes the candidate set according to the vehicle movement characteristics. The simulation results show that the routing protocol proposed in this paper can significantly improve the performance of unicast routing.