车载通信中增强型多跳广播算法研究

doi:10.3969/j.issn.1000-0801.2014.09.014

电信科学 ›› 2014, Vol. 30 ›› Issue (9): 100-105.doi: 10.3969/j.issn.1000-0801.2014.09.014

车载通信中增强型多跳广播算法研究

赵海涛¹,朱洪波^1,²,刘南杰¹,蔡耿雄¹

¹ 南京邮电大学通信与信息工程学院南京210003
² 南京邮电大学物联网技术与应用协同创新中心南京210003

出版日期:2014-09-20 发布日期:2017-07-05
基金资助:
国家重点基础研究发展计划（“973”计划）基金资助项目;国家自然科学基金资助项目;中国博士后研究基金资助项目;教育部博士点基金资助项目;学研究基金资助项目;南京邮电大学引进人才科研启动基金资助项目

Researcb on Enbanced Multi-Hop Broadcast Algoritbm in Vebicular Communications

Haitao Zhao¹,Hongbo Zhu^1,²,Nanjie Liu¹,Gengxiong Cai¹

¹ College of Communication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
² Jiangsu Innovative Coordination Center of Internet of Things, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Online:2014-09-20 Published:2017-07-05

摘要/Abstract

摘要：

提出了一种高速公路场景下基于邻居信息的增强型多跳广播协议（enhanced neighbor information-based muti-hop broadcast protocol,ENIMBP），提出的协议利用车辆的邻居信息同时结合车辆的位置、行驶速度和方向来确定转发等待时间，以选择最优的转发车辆。根据车辆的位置，ENIMBP可以初步确定与广播车辆距离不同的车辆的转发等待时间。而在与广播车辆距离相同的情况下，ENIMBP则利用车辆速度和方向来区分转发等待时间。ENIMBP很好地解决了高速公路场景下的网络分割问题以及隐藏／暴露节点问题。仿真结果表明，在不同的车辆密度场景下，ENIMBP能显著地降低端到端时延，同时保持较好的分组到达率。

关键词: VANET, 多跳广播, 广播抑制, 时延, 分组到达率

Abstract:

An enhanced neighbor information-based multi-hop broadcast protocol（ENIMBP）in highway scenarios was proposed, which calculated the forwarding waiting time by using vehicle neighbor information as well as position, speed and direction to select the optimal forwarding vehicle. In order to calculate the forwarding waiting time, ENIMBP employed position information for vehicles which with different distance to the broadcasting vehicle, while used speed and direction in addition for those with the same distance to the broadcasting vehicle. ENIMBP is a good solution to segmentation problem and hidden／exposed node problem in highway scenarios. Simulation results show that ENIMBP can significantly reduce the end to end delay in a sparse network, while maintaining a high packet delivery ratio.

Key words: VANET, multi-hop broadcast, broadcast suppression, delay, packet delivery ratio

赵海涛,朱洪波,刘南杰,蔡耿雄. 车载通信中增强型多跳广播算法研究[J]. 电信科学, 2014, 30(9): 100-105.

Haitao Zhao,Hongbo Zhu,Nanjie Liu,Gengxiong Cai. Researcb on Enbanced Multi-Hop Broadcast Algoritbm in Vebicular Communications[J]. Telecommunications Science, 2014, 30(9): 100-105.

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参考文献 19

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参数	取值
高速公路面积	5 000×28 m²
车辆速度	70～100 km／h
车辆密度	2、4、6、8、10 vehicle／（lane·km）
MAC协议	IEEE 802.11p／WAVE
通信距离	300 m
吞吐量	3 Mbit／s
数据分组大小	250 byte
C₁	25 μs
C₂	10^-8
仿真时间	100 s

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车载通信中增强型多跳广播算法研究

Researcb on Enbanced Multi-Hop Broadcast Algoritbm in Vebicular Communications

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