基于ETX链路质量的方向贪婪转发地理路由

发布时间：2018-02-24 04:33

  本文关键词： 车载网 地理路由 方向贪婪转发 链路质量 期望传输次数　出处：《计算机工程与设计》2017年11期 　论文类型：期刊论文

【摘要】：尽管基于贪婪转发(greedy forwarding,GF)地理路由广泛应用于车载网(vehicular ad hoc networks,VANETs),但仍存在链路稳定性不足的问题。为此,提出基于期望传输次数(expected transmission count,ETX)链路质量感知的方向贪婪转发的地理路由协议(ETX-based link quality aware directional greedy forwarding geographic routing,ETX-DGF)。利用距离、节点移动方向以及链路质量计算每个节点的转发权值,利用经典的ETX估计链路质量,将具有最小转发权值的邻居节点选为下一跳转发节点。实验结果表明,ETX-DGF协议降低了数据包丢失率,提高了网络吞吐量。
[Abstract]:Although geographic routing based on greedy forwarding hoc networks is widely used in vehicle-borne networks, there is still a problem of insufficient link stability. In this paper, a geographic routing protocol, ETX-based link quality aware directional greedy forwarding geographic routing ETX-DGFs, is proposed, which is based on the direction of perceived link quality perception of the expected transmission count. The forwarding weights of each node are calculated by using distance, node movement direction and link quality. Using the classical ETX to estimate the link quality, the neighbor node with the minimum forwarding weight is selected as the next hop forwarding node. The experimental results show that the ETX-DGF protocol reduces the packet loss rate and improves the network throughput.
【作者单位】： 江苏食品药品职业技术学院信息工程系;
【基金】：淮安市产学研协同创新计划基金项目(HAC2014007) 江苏省政策引导类计划基金项目(BY2015054-02)
【分类号】：TN929.5;U495
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本文编号：1528890