首页 | 本学科首页   官方微博 | 高级检索  
     检索      

一种适用于无线传感器网络的功率控制MAC协议
引用本文:李方敏,徐文君,高超.一种适用于无线传感器网络的功率控制MAC协议[J].软件学报,2007,18(5):1080-1091.
作者姓名:李方敏  徐文君  高超
作者单位:1. 武汉理工大学,信息工程学院,湖北,武汉,430070
2. Department of Computer Science,University of Vaasa,Vaasa,Finland
基金项目:教育部跨世纪优秀人才培养计划;湖北省杰出青年科学基金
摘    要:功率控制技术通过减少节点的发射功率来降低能耗,但节点间不对称的发射功率会增加网络的冲突概率并降低吞吐量.根据实际环境中的节点部署情况,引入了基于Pareto分布的系统模型.研究了传感器网络中功率控制技术在节省能量方面的性能,提出了一种基于SMAC(sensor-MAC)可适用于无线传感器网络的功率控制MAC(media access control)协议.此协议使用功率控制调度算法选择最优相邻节点,使网络中节点的拓扑连接得到优化,在保证网络连通性的同时,降低通信的冲突率,扩大网络的吞吐量.信息的传递以最优功率发射,并使通信节点具有反作用冲突节点的能力,从而在降低网络能耗的同时保证了节点间通信的公平性.实验仿真结果显示,与现有的几种重要方案相比,新的功率控制MAC协议使网络具有了更大的有效吞吐量及更长的生存时间.

关 键 词:无线传感器网络  MAC(media  access  control)协议  功率控制策略  反作用机制  能量有效
收稿时间:2006-08-14
修稿时间:2006-11-16

A Power Control MAC Protocol for Wireless Sensor Networks
LI Fang-Min,XU Wen-Jun and GAO Chao.A Power Control MAC Protocol for Wireless Sensor Networks[J].Journal of Software,2007,18(5):1080-1091.
Authors:LI Fang-Min  XU Wen-Jun and GAO Chao
Institution:1.School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China; 2.Department of Computer Science, University of Vaasa, Vaasa, Finland
Abstract:Power control scheme is used to reduce energy consumption,but asymmetric transmit powers is the problem which can result in increased collisions and degraded throughput in the scheme. A system model following pareto distribution according to a real network situation is proposed. The performance of the power control scheme in saving energy for wireless sensor networks is studied in this paper. A power control scheme based on SMAC(sensor-MAC) for wireless sensor networks is proposed and evaluated. In the new scheme,the optimum neighbor nodes are selected by a scheduling algorithm which can improve the network topology,reduce the collisions,increase goodput,and confirm the network connectivity. The message is transmitted with the optimum power. Furthermore,the protocol provides a fair share of the medium to low power and high power nodes by the reactive mechanism. The experimental results demonstrate that the new power control MAC(media access control) protocol provides longer lifetime and higher goodput than the current important protocols.
Keywords:wireless sensor network  MAC(media access control) protocol  power control scheme  reactive mechanism  energy efficient
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《软件学报》浏览原始摘要信息
点击此处可从《软件学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号