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Island-Based Sensor Relocation in Wireless Sensor Network to Improve Connectivity

Authors:
Sahla Masmoudi
Leila Saidane

Keywords: Sensors; Wireless Sensor Network; connectvity; Mobile Robot; Relocation

Abstract:
Wireless sensor networks applications require connectivity between deployed sensors over the region of interest (ROI). We note that the random deployment of sensors, leads to dividing the network in different partitions and makes the communication impossible between deployed nodes. In this paper, we propose to use a mobile robot which will travel through the supervised area and will relocate redundant sensor nodes in order to ensure connectivity. We assume in our work that the mobile robot is not aware of the network topology, so that the robot has to discover the network topology and to enhance the connectivity in the WSN. We propose for this purpose two Island-Based strategies. In the first strategy, the robot walk is made in a random manner; this strategy is called Island-Based Random Walk (IBRW). In the second strategy, called Island-Based Walk with Memorization (IBWM), the robot memorizes the collected information and tries to improve the connectivity in the WSN. Through simulation we evaluate and compare the performances of these strategies.

Pages: 60 to 65

Copyright: Copyright (c) IARIA, 2016

Publication date: June 26, 2016

Published in: conference

ISSN: 2308-4006

ISBN: 978-1-61208-482-4

Location: Lisbon, Portugal

Dates: from June 26, 2016 to June 30, 2016