A Proposal of Link Metric for Next-Hop Forwarding Methods in Vehicular Ad Hoc Networks
A Proposal of Link Metric for Next-Hop Forwarding Methods in Vehicular Ad Hoc Networks
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DOI：
10.1109/ccnc.2009.4784925
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发表时间：
2009-01
期刊：
影响因子：
--
通讯作者：
Hiraku Okada;Akira Takano;K. Mase
中科院分区：
文献类型：
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作者：
Hiraku Okada;Akira Takano;K. Mase
车载自组织网络(VANET)是移动自组织网络(MANET)最有前途的应用之一。VANET中的一个重要问题是可扩展性。与基于拓扑的路由协议相比，使用位置信息的路由协议可以缓解可伸缩性或控制开销的问题。使用全球定位系统(GPS)的汽车导航系统很普遍，而基于位置的路线选择是VANET中一种有用的方法。下一跳转发方法是一种基于位置的路由协议，其中下一跳节点的选择方案非常重要。本文针对车载自组网中的下一跳转发方法，提出了一种新的下一跳节点选择方案。在该方案中，为了同时考虑无线链路的转发距离和传输质量，引入了一种新的链路度量--期望进度距离。我们对所提方案的性能进行了评估，结果表明，与现有的传统方案相比，该方案可以获得更高的吞吐量和更好的分组递交率。
An inter-vehicle communication system, called vehicular ad hoc network (VANET), is one of the most promising applications of a mobile ad hoc network (MANET). One of the important issues in VANET is scalability. Compared with topology-based routing protocols, a routing protocol using position information may alleviate the issues of scalability or control overhead. Car navigation systems using a global positioning system (GPS) are widespread, and position-based routing is a useful approach in VANETs. A next-hop forwarding method is a type of position-based routing protocol, wherein a selection scheme for the next-hop node is very important. In this paper, we propose a novel selection scheme for the next-hop node in the next-hop forwarding method in VANET. In the proposed scheme, a new link metric, expected progress distance, is introduced in order to consider both forwarding distance and transmission quality of the wireless link. We evaluate the performance of our proposed scheme, and show that it can achieve much higher throughput and a better packet delivery ratio than existing conventional schemes.