车载自组网中对GPSR路由协议的改进

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摘要 Routing is the key technology of a vehicular ad hoc network (VANET). On the basis of the high mobility of nodes and the vast frequent changes of the network topology of ad hoc networks, this study proposed an improved greedy perimeter stateless routing with speed-density direction (GPSR-SD) routing protocol, which is based on the GPSR protocol. The proposed routing protocol is combined with the speed-density model to estimate the density information of a vehicle node traveling on a road. It considers the traveling speed of the vehicle node and the density of the road to select the next hop forwarding node and improve the selection of the forwarding node, thereby increasing communication reliability. The proposed routing protocol can effectively reduce the hole phenomena caused by the movement of the node, improve the average packet delivery ratio, and reduce average end-to-end delay. Simulation results of the NS2 platform indicate that GPSR-SD performs well.

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	张晓丽
	张谦
	张彤

关键词 ： intelligent transportation, vehicular ad hoc networks, routing protocol, speed-density model, network simulation

Abstract：Routing is the key technology of a vehicular ad hoc network (VANET). On the basis of the high mobility of nodes and the vast frequent changes of the network topology of ad hoc networks, this study proposed an improved greedy perimeter stateless routing with speed-density direction (GPSR-SD) routing protocol, which is based on the GPSR protocol. The proposed routing protocol is combined with the speed-density model to estimate the density information of a vehicle node traveling on a road. It considers the traveling speed of the vehicle node and the density of the road to select the next hop forwarding node and improve the selection of the forwarding node, thereby increasing communication reliability. The proposed routing protocol can effectively reduce the hole phenomena caused by the movement of the node, improve the average packet delivery ratio, and reduce average end-to-end delay. Simulation results of the NS2 platform indicate that GPSR-SD performs well.

Key words： intelligent transportation vehicular ad hoc networks routing protocol speed-density model network simulation

收稿日期: 2016-05-23

基金资助:Supported by the Xi'an Science and Technology Project(No.CXY1518(1))

通讯作者: ZHANG Xiao-li E-mail: zhangxl319@126.com

引用本文:

张晓丽, 张谦, 张彤. 车载自组网中对GPSR路由协议的改进[J]. Journal of Highway and Transportation Research and Development, 2017, 11(4): 98-103.
ZHANG Xiao-li, ZHAO Qian, ZHANG Tong. Improved GPSR-SD Routing Protocol for VANET. Journal of Highway and Transportation Research and Development, 2017, 11(4): 98-103.

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http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/ 或 http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/Y2017/V11/I4/98

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