Genetic Algorithm Based Method for Analyzing Reliability State of Wireless Sensor Network

Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 199)

Abstract

Wireless sensor networks are application specific and consist of large number of sensor nodes deployed in a harsh environment/area. Sensor nodes are deployed randomly to monitor or sense the area of interest. Wireless sensor networks have a wide range of application such as military surveillance, environment monitoring, agriculture, health monitoring and many more. Reliability of a wireless sensor network is defined in terms of area covered by sensor nodes and redundancy in sensed data. Redundancy in data is caused by overlapping in sensed area of nodes. Redundancy is required to gather high quality of information. Sensor nodes have limited battery power and harsh deployed environment makes it quite impossible to recharge or replace the battery of nodes. Energy of nodes is consumed in sensing, computing and communicating data. Due to the non-uniform energy consumption of nodes in field, nodes start dying over the time. As nodes start dying, area is not completely sensed and redundancy of data also decreases. That makes the network unreliable. Hence the gathered data from the network is also unreliable. So it is necessary to find when network is in unreliable state so that proper action can be taken. In this paper, we have proposed a genetic algorithm based method to find whether wireless sensor network is reliable or unreliable. Our proposed method finds the optimal minimal number of nodes that can sense the whole area with minimum desired redundancy in data to have good quality of information gathered. Minimum number of nodes and minimum required redundancy for a network are application dependent. We have experimented with different number of topologies and different parameters. Our result show that for a network to be in reliable state at least 48% to 52% of the initial nodes (random) should be active to sense the complete area with 20% to 30% overlapping the sensed area respectively.

Keywords

Wireless Sensor Network Redundancy Reliability Genetic Algorithm 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of Electronics and Communication EngineeringMalaviya National Institute of Technology JaipurJaipurIndia
  2. 2.Department of Computer EngineeringMalaviya National Institute of Technology JaipurJaipurIndia
  3. 3.Rajasthan Technical University KotaKotaIndia

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