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J. Sens. Actuator Netw. 2016, 5(1), 4; doi:10.3390/jsan5010004

A Cooja-Based Tool for Coverage and Lifetime Evaluation in an In-Building Sensor Network

1
Department of Computer Science, University College Cork, Cork T12 YN60, Ireland
2
United Technologies Research Center (UTRC) Ireland Ltd, 4th Floor Penrose Business Centre, Penrose Wharf, Cork, Ireland
This paper is an extended version of our paper published in Sitanayah, L.; Sreenan, C.J.; Fedor, S. Demo Abstract: A Cooja-Based Tool for Maintaining Sensor Network Coverage Requirements in a Building. In Proceedings of the 11th ACM Conference on Embedded Networked Sensor Systems (SenSys’13), Rome, Italy, November 2013.
*
Author to whom correspondence should be addressed.
Academic Editor: Adnan Al-Anbuky
Received: 22 November 2015 / Revised: 4 February 2016 / Accepted: 7 February 2016 / Published: 19 February 2016
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Abstract

Contiki’s Cooja is a very popular wireless sensor network (WSN) simulator, but it lacks support for modelling sensing coverage, focusing instead on network connectivity and protocol performance. However, in practice, it is the ability of a sensor network to provide a satisfactory level of coverage that defines its ultimate utility for end-users. We introduce WSN-Maintain, a Cooja-based tool for coverage and network lifetime evaluation in an in-building WSN. To extend the network lifetime, but still maintain the required quality of coverage, the tool finds coverage redundant nodes, puts them to sleep and automatically turns them on when active nodes fail and coverage quality decreases. WSN-Maintain together with Cooja allow us to evaluate different approaches to maintain coverage. As use cases to the tool, we implement two redundant node algorithms: greedy-maintain, a centralised algorithm, and local-maintain, a localised algorithm to configure the initial network and to turn on redundant nodes. Using data from five real deployments, we show that our tool with simple redundant node algorithms and reading correlation can improve energy efficiency by putting more nodes to sleep. View Full-Text
Keywords: sensor network; simulation tool; coverage maintenance; lifetime evaluation sensor network; simulation tool; coverage maintenance; lifetime evaluation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sitanayah, L.; Sreenan, C.J.; Fedor, S. A Cooja-Based Tool for Coverage and Lifetime Evaluation in an In-Building Sensor Network. J. Sens. Actuator Netw. 2016, 5, 4.

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