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A Novel Multi-Objective Optimization-Based Path Formulation for Mobile Sink in Wireless Sensor Networks
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DOI：10.1007/s13369-023-07636-9.png)
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As a consequence of the limited battery life of sensor nodes ( SNs) in wireless sensor networks (WSNs), the SNs nearby the sink exhaust rapidly and exhibit the hot spot problem. The mobile sink (MS) is proposed to be the solution as it helps in decreasing the energy consumption of SNs. This further results in an increased network lifetime. Moreover, some sensor applications require a precise data collection time and hence need to optimize the path length of the MS. This ensures that MS will collect data from all the SNs in a certain threshold time. In the proposed approach, we use the concept of the Voronoi diagram and consider their vertices as the probable set of rendezvous points (RPs) for the mobile sink to collect data from SNs. These rendezvous points are further optimized using a cost function which is generated by using several parameters that affect the performance of each rendezvous point. The final set of rendezvous points resulting in the longest path within permissible delay is then finalized. The proposed method is simulated and compared with the existing approaches. The comparison is performed under different parameters like network lifetime, number of hop count, number of alive SNs, and so on.
Keyword:
Wireless sensor networks
Mobile sink
Rendezvous point
Trajectory design
Voronoi diagram
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5.7
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4.9K
被引数:
1.1W
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