Energy-Efficient Localization and Tracking of Mobile Devices in Wireless Sensor Networks

摘要

Wireless sensor networks (WSNs) are effective for locating and trackingpeople and objects in various industrial environments. Since energy consumptionis critical to prolonging the lifespan of WSNs, we propose an energy-efficientLOcalization and Tracking} (eLOT) system, using low-cost and portable hardwareto enable highly accurate tracking of targets. Various fingerprint-basedapproaches for localization and tracking are implemented in eLOT. In order toachieve high energy efficiency, a network-level scheme coordinating collisionand interference is proposed. On the other hand, based on the locationinformation, mobile devices in eLOT can quickly associate with the specificchannel in a given area, while saving energy through avoiding unnecessarytransmission. Finally, a platform based on TI CC2530 and the Linux operatingsystem is built to demonstrate the effectiveness of our proposed scheme interms of localization accuracy and energy efficiency.