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Sensors 2011, 11(9), 9045-9068; doi:10.3390/s110909045

A Framework for UWB-Based Communication and Location Tracking Systems for Wireless Sensor Networks

Research Institute of Engineering in Aragón, I3A, University of Zaragoza, C/ María de Luna 3, Zaragoza 50018, Spain
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Received: 10 August 2011 / Revised: 10 September 2011 / Accepted: 20 September 2011 / Published: 21 September 2011
(This article belongs to the Section Physical Sensors)

Abstract

Ultra wideband (UWB) radio technology is nowadays one of the most promising technologies for medium-short range communications. It has a wide range of applications including Wireless Sensor Networks (WSN) with simultaneous data transmission and location tracking. The combination of location and data transmission is important in order to increase flexibility and reduce the cost and complexity of the system deployment. In this scenario, accuracy is not the only evaluation criteria, but also the amount of resources associated to the location service, as it has an impact not only on the location capacity of the system but also on the sensor data transmission capacity. Although several studies can be found in the literature addressing UWB-based localization, these studies mainly focus on distance estimation and position calculation algorithms. Practical aspects such as the design of the functional architecture, the procedure for the transmission of the associated information between the different elements of the system, and the need of tracking multiple terminals simultaneously in various application scenarios, are generally omitted. This paper provides a complete system level evaluation of a UWB-based communication and location system for Wireless Sensor Networks, including aspects such as UWB-based ranging, tracking algorithms, latency, target mobility and MAC layer design. With this purpose, a custom simulator has been developed, and results with real UWB equipment are presented too. View Full-Text
Keywords: UWB; wireless sensor networks; location tracking; hybrid positioning and communication; system performance evaluation UWB; wireless sensor networks; location tracking; hybrid positioning and communication; system performance evaluation
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Chóliz, J.; Hernández, Á.; Valdovinos, A. A Framework for UWB-Based Communication and Location Tracking Systems for Wireless Sensor Networks. Sensors 2011, 11, 9045-9068.

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