车载自组织网络中RSU协调的多信道MAC协议

doi:10.11959/j.issn.1000-436x.2018233

通信学报 ›› 2018, Vol. 39 ›› Issue (11): 10-22.doi: 10.11959/j.issn.1000-436x.2018233

车载自组织网络中RSU协调的多信道MAC协议

宋彩霞^1,²(),谭国真¹,丁男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

修回日期:2018-05-16 出版日期:2018-11-01 发布日期:2018-12-10
作者简介:宋彩霞（1977–），女，山东即墨人，大连理工大学博士生，主要研究方向为车载自组织网络安全通信协议、性能分析、信道资源分配、多agent系统与机器学习在车载自组织网络中的应用。|谭国真（1960–），男，黑龙江齐齐哈尔人，博士，大连理工大学教授、博士生导师，主要研究方向为物联网、车载自组织网络、智能交通控制、无线通信技术。|丁男（1978–），男，辽宁沈阳人，博士，大连理工大学副教授，主要研究方向为物联网、智能交通、实时嵌入式系统与移动通信技术。
基金资助:
国家高技术研究发展计划（“863”计划）基金资助项目(2012AA111902-2);国家自然科学基金资助项目(61471084);中央高校基本科研业务费专项基金资助项目(DUT15QY02);教育部在线教育研究中心在线研究基金（全通教育）2017年一般课题基金资助项目(2017YB135);青岛农业大学校级教学研究基金资助项目(J17KA154);青岛农业大学校级教学研究基金资助项目(XJP2013032);青岛农业大学校级教学研究基金资助项目(XJG2016056);青岛农业大学实验技术研究课题基金资助项目(SYJK16-13)

RSU-coordinated multichannel MAC protocol in vehicular ad hoc network

Caixia SONG^1,²(),Guozhen TAN¹,Nan DING¹

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,China

Revised:2018-05-16 Online:2018-11-01 Published:2018-12-10
Supported by:
The National High Technology Research and Development Program of China (863 Program)(2012AA111902-2);The National Natural Science Foundation of China(61471084);The Central University Basic Business Expenses Special Funding for Scientific Research Project(DUT15QY02);Online Research Fund of Ministry of Education Research Center for Online Education(2017YB135);Project of Shandong Province Higher Educational Science and Technology Program(J17KA154);Project of Shandong Province Higher Educational Science and Technology Program(XJP2013032);Project of Shandong Province Higher Educational Science and Technology Program(XJG2016056);Project of Shandong Province Feature Prestigious Construction-College Quality Course(SYJK16-13);Experimental Technology Research Project of Qingdao Agricultural University

摘要/Abstract

摘要：

提出了一种车载自组织网络中路侧单元（RSU,road side unit）协调的多信道MAC（RMM,RSU-coordinated multichannel MAC）协议，以支持非安全（如运输效率、娱乐应用等）消息的高效传输。在路侧单元的协调下，节点有更多机会在控制信道上进行预约，以实现服务信道上无竞争的传输。同时，RMM 协议支持在整个同步间隔内传输服务分组，从而提高了服务信道的饱和吞吐量和利用率，并减少了时延。与现有的其他协议相比，仿真结果证实了所提协议的优越性。

关键词: 车载自组织网, 多信道MAC, 路侧单元, 吞吐量与时延, 信道利用率, 同时传输

Abstract:

A road side unit (RSU)-coordinated multichannel media access control (MAC) (RMM) protocol was proposed in vehicular ad hoc network,which aimed to improve the transmission efficiency of non-safety messages.Under the coordination of RSU,nodes had more opportunities to make SCH reservations on control channel,and the contention-free message transmissions were thus realized.The proposed RMM protocol could use the service channel during the whole synchronization interval for non-safety message transmissions,and thus the saturated network throughput and channel utilization were improved,and the transmission delay was reduced.Compared with other existing protocols,extensive analysis and simulation results demonstrate the superiority of the RMM protocol.

Key words: vehicular ad hoc networks, multichannel MAC, road side unit, throughput and delay, channel utilization, synchronous transmission

中图分类号:

TP393

宋彩霞,谭国真,丁男. 车载自组织网络中RSU协调的多信道MAC协议[J]. 通信学报, 2018, 39(11): 10-22.

Caixia SONG,Guozhen TAN,Nan DING. RSU-coordinated multichannel MAC protocol in vehicular ad hoc network[J]. Journal on Communications, 2018, 39(11): 10-22.

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参考文献 22

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SCH	可用的时隙
1	1，5，7
2	2，6，8
3	1，3，4
4	3，5，8
5	3，6
6	2，4，7

参数	值
CCH数量	1
SCH数量(N_sch)	6
每条信道数据传输速率(R_d)/(Mbit·s^?1)	6
RSU覆盖范围(R)/m	300,500
每方向车道数(M)	2
信道带宽/MHz	10
车辆密度(β)/(vehicles·m^?1)	0.02~0.3
车速([V_min,V_max])/(km·h^?1)	60,100],[80,120]
W₀	32
m'	5
m	10
MAC头大小/ bit	256
PHY头大小/ bit	192
WSA/RFS分组负载(L_wsa/L_rfs)/bit	216+PHY header
ACK分组负载(L_ack)/ bit	128 +PHY header
SIFS长度(T_sifs)/ μs	10
DIFS长度(T_difs)/ μs	50
空闲时隙长度(σ)/μs	20
传播时延(δ)/μs	1
传输一个CLI分组时间(T_CLI)/ ms	0.8
传输一个RRTS分组时间(t_rrts)/μs	60
传输一个CP时间(T_cp)/μs	100
传输一个安全相关数据分组的时间(T_saslot)/ms	0.4
安全消息的发送频率/Hz	10
非安全分组负载(L_data)/B	1 000,3 000
安全分组大小/ B	200

车载自组织网络中RSU协调的多信道MAC协议

RSU-coordinated multichannel MAC protocol in vehicular ad hoc network

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