https://scholars.lib.ntu.edu.tw/handle/123456789/499691
標題: | Sensor-enhanced mobility prediction for energy-efficient localization | 作者: | You, C.-W. Chen, Y.-C. Chiang, J.-R. POLLY HUANG Chu, H.-H. Lau, S.-Y. |
關鍵字: | Position measurement; Power demand; Quality assurance | 公開日期: | 2007 | 卷: | 2 | 起(迄)頁: | 565-574 | 來源出版物: | 2006 3rd Annual IEEE Communications Society on Sensor and Adhoc Communications and Networks, Secon 2006 | 摘要: | Energy efficiency and positional accuracy are often contradictive goals. We propose to decrease power consumption without sacrificing significant accuracy by developing an energy-aware localization that adapts the sampling rate to target's mobility level. In this paper, an energy-aware adaptive localization system based on signal strength fingerprinting is designed, implemented, and 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 predict the positional error of a real working positioning engine under different mobility levels of mobile targets, estimation error from the positioning engine, processing and networking delay in the location infrastructure, and sampling rate of location information. (2) In a real test environment, our energy-saving method solves the mobility estimation error problem by utilizing additional sensors on mobile targets. The result is that we can improve the prediction accuracy by as much as 37.01%. (3) We implemented our energy-saving methods inside a working localization infrastructure and conducted performance evaluation in a real office environment. Our performance results show as much as 49.76 % reduction in power consumption. © 2006 IEEE. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/499691 https://www.scopus.com/inward/record.uri?eid=2-s2.0-44049108639&doi=10.1109%2fSAHCN.2006.288513&partnerID=40&md5=8b6beb17ead1017a4d0706e8048ea98a |
DOI: | 10.1109/SAHCN.2006.288513 | SDG/關鍵字: | Electric power utilization; Energy efficiency; Quality assurance; Sensors; Localization infrastructure; Performance evaluation; Power demand; Position measurement |
顯示於: | 電機工程學系 |
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