DocumentCode :
54357
Title :
Border Effect Analysis for Reliability Assurance and Continuous Connectivity of Wireless Sensor Networks in the Presence of Sensor Failures
Author :
Laranjeira, Luiz A. ; Nunes Rodrigues, Genaina
Author_Institution :
Dept. of Software Eng., Univ. of Brasilia, Brasilia, Brazil
Volume :
13
Issue :
8
fYear :
2014
fDate :
Aug. 2014
Firstpage :
4232
Lastpage :
4246
Abstract :
This paper presents a model of the connectivity of a wireless sensor network (WSN) deployed over a square area, which considers border effects. This model supports an accurate evaluation of the reliability of the network with and without node failures. Using the proposed model we analyze the tradeoff between the number of sensors and their communication range when deploying a wireless network that is connected with high probability and validate this analysis through simulation experiments. Additional simulations, considering sensor failures, ratified that periodic sensor redeployments, calculated according to the proposed model, can extend the reliability of WSNs, keeping them connected with high probability. For applications that can withstand temporary network disconnection, we obtained theoretical and experimental evidence that the proposed model also supports the calculation of a less frequent redeployment procedure that provides network connectivity at high levels of availability. Finally, extending the approach to a circular shaped area was considered.
Keywords :
probability; wireless sensor networks; WSN; border effect analysis; continuous connectivity; high probability; periodic sensor redeployments; reliability assurance; sensor failures; temporary network disconnection; wireless sensor networks; Analytical models; Equations; Mathematical model; Reliability; Spread spectrum communication; Wireless communication; Wireless sensor networks; Availability; border effects; fault tolerance; network connectivity; reliability; wireless sensor networks (WSNs);
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/TWC.2014.2314102
Filename :
6779693
Link To Document :
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