Grid based mobile sensor node deployment for improving area coverage in Wireless Sensor Networks

摘要

The coverage of sensing field is one among many noteworthy phase at the designing of Wireless Sensor Networks (WSN). The coverage concern in WSNs depends on a number of aspects like topology of the network, sensing mode of sensors and most considerably is deployment. This methodology permits us to locate the sensor nodes in our field of interest which refers to the preferred field of coverage. A novel methodology for deployment of Hybrid sensor nodes has been proposed in this work. Hybrid implies that, this algorithm includes both static and mobile nodes. In order to triumph over the hurdle of coverage, mobile sensor nodes get included to the previously deployed stationary nodes. A well-structured method of sensor node deployment namely, grid deployment technique is proposed in this work which would generate supreme utilization of the covered area. The complete atmospheric region is partitioned into a number of individual grids along with which the weight value of each grid is estimated. Target grid of any mobile node will be the one which possesses the minimum weightage value among all grids. The coverage ratio is the performance parameter evaluated in order to estimate the precision of the proposed method. The ultimate result of coverage is found to be getting enhanced swiftly along with the increase in number of sensor nodes. When compared with the previously given deployment methodologies, this work has privileged performance in terms of coverage. Added advantages include lower value of computational cost.