面向应用的车载自组织网络跨层多信道MAC协议

doi:10.11959/j.issn.1000-436x.2016097

通信学报 ›› 2016, Vol. 37 ›› Issue (5): 95-105.doi: 10.11959/j.issn.1000-436x.2016097

面向应用的车载自组织网络跨层多信道MAC协议

宋彩霞^1,²,谭国真¹(),丁男¹,步俊凌³,张福新¹,刘明剑¹

¹ 大连理工大学计算机科学与技术学院，辽宁大连116024
² 青岛农业大学理学与信息科学学院，山东青岛 266109
³ 吴淞海事局，上海200940

出版日期:2016-05-25 发布日期:2016-06-01
基金资助:
国家高技术研究发展计划（“863”计划）基金资助项目;国家自然科学基金资助项目;中央高校基本科研业务费专项资金资助项目

Application oriented cross-layer multi-channel MAC protocol for VANET

Cai-xia SONG^1,²,Guo-zhen TAN¹(),Nan DING¹,Jun-ling BU³,Fu-xin ZHANG¹,Ming-jian LIU¹

¹ College of Computer Science and Technology,Dalian University of Technology,Dalian 116024,China
² College of Science and Information,Qingdao Agricultural University,Qingdao 266109
³ Wusong Maritime Safety Administration,Shanghai200940,China

Online:2016-05-25 Published:2016-06-01
Supported by:
The National High Technology Research and Development Program of China(863 Program);The National Natural Science Foundation of China;The Fundamental Research Funds for the Central Universities

摘要/Abstract

摘要：

提出了一种面向应用的车载网络跨层多信道MAC 协议。对来自应用层不同类型的消息进行实时统计，预测出最优控制信道周期，确保控制信道上安全消息的及时、可靠传输，同时采用预约机制实现消息在服务信道上的无竞争传输，提高服务信道的吞吐量。本协议适合饱和与非饱和的一般VANET 环境，具有较低的计算复杂度，扩展性较好。与现存的其他协议相比较，仿真结果证实了所提协议的优越性。

关键词: 车载自组织网络, 多信道MAC, 可变的控制信道周期, 网络信息流统计, 跨层

Abstract:

An application oriented cross-layer multi-channel(AOCM)MAC protocol was proposed for VANET.The AOCM protocol could derive the optimal control channel(CCH)interval to ensure the timely and reliable transmission of safety messages on the CCH,based on real-time statistics and prediction for different types of sages coming from upper application layer.In the service channels(SCH),the proposed protocol relies on a reservation mechanism for con-tention-free transmission,so as to improve the throughput of SCH.The proposed protocol was suitable for both saturation and unsaturation conditions,and has low computational complexity and high scalability.Extensive simulation results demonstrate the superiority of the AOCM protocol compared with other existing protocols.

Key words: vehicular ad-hoc network, multi-channel MAC, variable control channel interval, network traffic statistics, cross-layer

宋彩霞,谭国真,丁男,步俊凌,张福新,刘明剑. 面向应用的车载自组织网络跨层多信道MAC协议[J]. 通信学报, 2016, 37(5): 95-105.

Cai-xia SONG,Guo-zhen TAN,Nan DING,Jun-ling BU,Fu-xin ZHANG,Ming-jian LIU. Application oriented cross-layer multi-channel MAC protocol for VANET[J]. Journal on Communications, 2016, 37(5): 95-105.

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参考文献 22

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参数名称	参数值
通信传输范围/m	250
控制信道数目	1
服务信道数目	4
每信道上数据传输速率/Mbit·s^-1	6
车辆密度范围	10～100
传输功率、接收功率阈值、本底噪声功率/dBm	16,-96,-98
默认CCH周期、SCH周期和保护间隙/ms	50,50,4
MAC层分组头大小/bit	256
PHY层分组头大小/bit	192
ACK大小/bit	112
safety大小/byte	200
Beacon大小/byte	400
WSA大小/byte	20
服务数据分组大小/byte	2 000
传播时间d/μs	1
DIFS时间/μs	128
SIFS时间/μs	28
系统参数a、b	1.3,1.2

面向应用的车载自组织网络跨层多信道MAC协议

Application oriented cross-layer multi-channel MAC protocol for VANET

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