一种结合雾计算的车辆通信网络碰撞避免TDMA MAC协议
A Fog-Assisted TDMA MAC for Collision Avoidance in VCNs
查看参考文献17篇
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文摘
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智能交通系统的产生和发展对车辆通信的介质访问控制(Medium Access Control,MAC)协议提出了更高的要求.被广泛使用的基于信道竞争的载波侦听多路访问(Carrier Sense Multiple Access,CSMA)协议存在不确定时延问题,基于时分多址(Time Division Multiple Access,TDMA)的MAC协议可以有效解决该问题.然而, TDMA协议仍然存在数据传输碰撞.为了解决数据传输碰撞问题,本文提出一个结合雾计算的通信框架,在此基础上提出一种集中式TDMA MAC协议.该协议利用雾计算的低时延优势、计算和协同功能预测即将发生的数据传输碰撞,通过调度时隙以减少数据传输碰撞.实验结果显示,该方法有效减少了数据传输碰撞,提高了信道资源利用率. |
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其他语种文摘
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The emergence and development of intelligent transportation system (ITS) put forward higher requirements for the medium access control (MAC) protocol of vehicle communication. The widely used carrier sense multiple access (CSMA) protocol based on channel competition has the problem of uncertain time delay. MAC protocol based on time division multiple access (TDMA) can effectively solve this problem. However,TDMA protocols cannot eliminate data transmission collisions. This paper propose a communication framework combining fog computing. And a centralized TDMA MAC protocol is proposed,which could predict upcoming data transmission collisions by taking advantage of the low-latency of fog computing. Then, time slots could be well scheduled to reduce data transmission collisions. Experimental simulation results show that this method effectively reduces data transmission collisions,and improves channel resource utilization. |
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来源
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电子学报
,2021,49(5):843-850 【核心库】
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DOI
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10.12263/DZXB.20201020
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关键词
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智能交通系统
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TDMA
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MAC
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雾计算
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数据传输碰撞避免
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地址
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1.
武汉理工大学计算机科学与技术学院, 湖北, 武汉, 430070
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武汉大学国家网络安全学院, 湖北, 武汉, 430000
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0372-2112 |
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学科
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自动化技术、计算机技术 |
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基金
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国家自然科学基金
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湖北省技术创新专项重大项目
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重庆车辆检测研究院开放课题
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武汉理工大学三亚科教创新园开放基金
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广东省深圳市科技计划项目
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文献收藏号
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CSCD:6982166
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