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Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6593
Title: Perpendicular intersection : locating wireless sensors with mobile beacon
Authors: Guo, Zhongwen
Guo, Ying
Hong, Feng
Yang, Xiaohui
He, Yuan
Feng, Yuan
Liu, Yunhao
Keywords: Mobile radio
Wireless sensor networks
Issue Date: Dec-2008
Citation: Proceedings of the 29th IEEE Real-Time Systems Symposium RTSS 2008, Barcelona, Spain, 30 November-3 December 2008, p. 93-102.
Abstract: Existing localization approaches are divided into two groups: range-based and range-free. The range-free schemes often suffer from poor accuracy and low scalability, while the range-based localization approaches heavily depend on extra hardware capabilities or rely on the absolute RSSI (received signal strength indicator) values, far from practical. In this work, we propose a mobile-assisted localization scheme called Perpendicular Intersection (PI), setting a dedicate tradeoff between range-free and rangebased approaches. Instead of directly mapping RSSI values into physical distances, by contrasting RSSI values from the mobile beacon to a sensor node, PI utilizes the geometric relationship of perpendicular intersection to compute node positions. We have implemented the prototype of PI with 100 TelosB motes. Through comprehensive experiments, we show that PI achieves high accuracy and low overhead, significantly outperforming the existing range-based and the mobile-assisted localization schemes.
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URI: http://hdl.handle.net/1783.1/6593
Appears in Collections:CSE Conference Papers

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