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Energy Efficient Wireless Sensor Network System for Localization

Authors:
Sila Ozen
Ture Peken
Sema Oktug

Keywords: sensor network; localization; energy efficiency

Abstract:
This paper introduces an enhanced overlapping connectivity-based localization technique. Constructed experiments showed that using the information obtained from closer anchor nodes in the communication range results in better position estimations. In this work, received signal strength indication (RSSI) measurements are used to estimate the distance of an anchor node to a mobile node. The optimal number of anchor nodes to be used in localization is determined empirically with the performed experiments. The enhanced localization technique is implemented on a wireless sensor network system consisting of GenetLab sensor nodes. Each node has MSP430 processor and TinyOS operating system deployed. In order to increase the energy efficiency of the wireless sensor network system, the anchor nodes are operated in active-state or semi-active state based on the position of the mobile nodes. It is shown that such an approach enhances the energy efficiency of the system under various movement scenarios and network topologies.

Pages: 43 to 48

Copyright: Copyright (c) IARIA, 2012

Publication date: September 23, 2012

Published in: conference

ISSN: 2326-9383

ISBN: 978-1-61208-239-4

Location: Barcelona, Spain

Dates: from September 23, 2012 to September 28, 2012