| 基于有序竞争的传感器网络MAC协议 |
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| 引用本文： | 赵小超,郑明才,廖瑞华.基于有序竞争的传感器网络MAC协议[J].计算机工程与应用,2012,48(18):76-80,141. |
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| 作者姓名： | 赵小超 郑明才 廖瑞华 |
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| 作者单位： | 1. 湖南第一师范学院教育科学系,长沙410002;湖南大学数学与计量经济学院,长沙410082
2. 湖南第一师范学院信息科学与工程系,长沙,410205 |
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| 基金项目： | 湖南省教育厅科学研究项目，湖南省科技计划项目，湖南第一师范校基金 |
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| 摘 要： | 在定向扩散路由无线传感器网络中,为减轻竞争型MAC协议CSMA/CD的碰撞冲突问题,以及减小MAC协议引入的时延,对CSMA/CD协议进行改进,提出基于定向扩散与有序竞争的传感器网络MAC协议,即CSMA/CD-DDOC,通过将同跳梯度层次内的转发节点进行分组后实施各分组对共享信道的有序竞争,减少同时争用信道的节点数目,以达到减少碰撞和减小时延的目的。理论分析和仿真结果表明,CSMA/CD-DDOC协议具有优于CSMA/CD协议的时延性能。
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| 关 键 词： | 定向扩散 无线传感器网络 介质访问控制(MAC)协议 有序竞争 时延 |
MAC protocol based on orderly competition in wireless sensor networks |
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| ZHAO Xiaochao
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ZHENG Mingcai
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LIAO Ruihua.MAC protocol based on orderly competition in wireless sensor networks[J].Computer Engineering and Applications,2012,48(18):76-80,141. |
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| Authors: | ZHAO Xiaochao ZHENG Mingcai LIAO Ruihua |
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| Affiliation: | 1.Department of Education Science,Hunan First Normal University,Changsha 410002,China 2.College of Mathematics and Econometrics,Hunan University,Changsha 410082,China 3.Department of Information Science and Technology,Hunan First Normal University,Changsha 410205,China |
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| Abstract: | In order to reduce the problem of collision and cut down the time delay in wireless sensor networks,an improved CSMA/CD protocol based on directed diffusion and orderly competition,namely CSMA/CD-DDOC protocol,is proposed.By dividing the numerous forwarding nodes in the same gradient level into several groups that request the sharing channel orderly,the number of nodes competing for the sharing channel in the same time is reduced,and the intended result is achieved.The theoretical analysis and simulation results validate that the time delay performance of CSMA/CD-DDOC protocol is better than that of CSMA/CD protocol. |
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| Keywords: | directed diffusion Wireless Sensor Networks(WSN) Medium Access Contro(lMAC)protocol orderly competition time delay |
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