| 面向移动节点定位的传感器网络动态休眠调度机制 |
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| 引用本文： | 刘玉恒,吴晶,陈真勇,熊璋.面向移动节点定位的传感器网络动态休眠调度机制[J].计算机研究与发展,2008,45(8). |
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| 作者姓名： | 刘玉恒 吴晶 陈真勇 熊璋 |
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| 作者单位： | 1. 北京航空航天大学计算机学院计算机应用工程系,北京,100083
2. 北京航空航天大学计算机学院计算机应用工程系,北京,100083;中国移动通信研究院产业市场研究所,北京,100053 |
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| 基金项目： | 中国航空支撑科技基金，北京市重点学科建设项目，北京航空航天大学研究生创新实践基金 |
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| 摘 要： | 由于能量受限的传感器节点一般多采用低功耗的工作方式,即在休眠状态和唤醒状态之间切换,因此,当对移动节点进行定位时,锚节点可能会因为处于休眠状态而没有响应移动节点的定位请求,从而导致定位失败.提出一种基于预唤醒的动态休眠调度机制P-SWIM,该机制提前通知移动节点周边的锚节点进入全勤的工作方式,而网络内其他锚节点则仍然处于低功耗的工作方式.通过P-SWIM,目标节点能够有效地维持足够高的锚节点连通度,从而保证了定位的成功率和精度.实验结果表明,移动节点定位方法采用P-SWIM相比于采用静态休眠调度机制(如RIS和GAF)能够显著地提高定位性能,且P-SWIM引入的运行功耗也是3种机制中最低的,比RIS和GAF最多可节省47.6%和60.2%的功耗.
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| 关 键 词： | 移动传感器网络 自身定位 休眠调度机制 休眠 唤醒 |
A Dynamic Sleep Scheduling Mechanism for Localization in Mobile Sensor Networks |
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| Liu Yuheng,Wu Jing,Chen Zhenyong,Xiong Zhang.A Dynamic Sleep Scheduling Mechanism for Localization in Mobile Sensor Networks[J].Journal of Computer Research and Development,2008,45(8). |
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| Authors: | Liu Yuheng Wu Jing Chen Zhenyong Xiong Zhang |
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| Affiliation: | Liu Yuheng1,Wu Jing1,2,Chen Zhenyong1,, Xiong Zhang11(Department of Computer Application Engineering,School of Computer Science , Engineering,Beihang University,Beijing 100083)2(Department of Industry , Market Research,Research Institute of China Mobile,Beijing 100053) |
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| Abstract: | Due to the limited power supply,sensors have to switch between sleeping mode and awake mode at a low duty cycle to extend the network life-time.Therefore,when localizing a mobile node,it is possible that a seed node is passed by the mobile node during its sleeping mode,so that the mobile node cannot collect enough seed information and fails to be localized consequently.In this paper,a dynamic sleep scheduling mechanism,namely P-SWIM is proposed.In P-SWIM,each seed is proactively notified if a mobile node is... |
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| Keywords: | mobile sensor networks self-localization sleep scheduling mechanism sleeping wakeup |
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