https://scholars.lib.ntu.edu.tw/handle/123456789/115390
標題: | Sensor-Enhanced Mobility Prediction for Energy-Efficient Localization Energy-Efficient Localization | 作者: | You, Chuang-Wen Chen, Yi-Chao Chiang, Ji-Rung Huang, Polly Chu, Hao-Hua Lau, Seng-Yong |
關鍵字: | Position measurement;Power demand;Quality assurance | 公開日期: | 2006 | 出版社: | 臺北市:國立臺灣大學資訊工程學系 | 起(迄)頁: | 566-574 | 來源出版物: | IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON 2006) | 摘要: | Energy efficiency & positional accuracy are often contradictive goals. We propose to decrease power consumption without sacrificing significant accuracy by developing an en-ergy-aware localization that adapts the sampling rate to target's mobility level. In this paper, an energy-aware adaptive localiza-tion system based on signal strength fingerprinting is designed, implemented, & evaluated. Promising to satisfy an application's requirements on positional accuracy, our system tries to adapt its sampling rate to reduce its energy consumption. The contribution of this paper is three-fold. (1) We have developed a model to pre-dict the positional error of a real working positioning engine un-der different mobility levels of mobile targets, estimation error from the positioning engine, processing & networking delay in the location infrastructure, & sampling rate of location infor-mation. (2) In a real test environment, our energy-saving method solves the mobility estimation error problem by utilizing addi-tional sensors on mobile targets. The result is that we can improve the prediction accuracy by as much as 37.01%. (3) We imple-mented our energy-saving methods inside a working localization infrastructure & conducted performance evaluation in a real office environment. Our performance results show as much as 49.76 % reduction in power consumption. |
描述: | Reston VA, USA |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/325578 http://ntur.lib.ntu.edu.tw/bitstream/246246/20060927122839101792/1/secon2006.pdf |
其他識別: | 20060927122839101792 |
顯示於: | 資訊工程學系 |
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