Energy efficient mobile sink driven data collection in wireless sensor network with nonuniform data

• Published in: Scientific reports Vol. 14; no. 1; pp. 28190 - 19
• Main Authors: Li, Hui, Dai, Yuzhou, Chen, Qian, Liao, Dan, Jin, Haiyan
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 15.11.2024; Nature Publishing Group; Nature Portfolio
• Subjects: 639/166/987; 639/4077/4072; 639/705/258; Data collection; Data transmission; Efficiency; Energy consumption; Energy efficiency; Energy effiency; Humanities and Social Sciences; Load-balanced; Mobile sink; multidisciplinary; Non-uniform data; Optimal clustering; Science; Science (multidisciplinary); Sensors; Topology; Mobile sink; Non-uniform data; Optimal clustering; Energy effiency; Load-balanced
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-024-79825-x

In wireless sensor network, mobile sink is used to collect data from sensor nodes by periodically traversing the network to prevent hotspot problem. However, when sensor nodes generate data non-uniformly, the efficiency of data collection is constrained by rendezvous points and network topology. It becomes more challenging under network energy consumption constraint. Thus, this paper investigates non-uniform data generation in wireless sensor network and proposes an innovative approach: Optimal Clustering and Network Topology for Mobile Sink-Driven Data Collection, called OCNTMS. It focuses on determining optimal rendezvous points and their associated clusters. Through innovative methods such as weight-balanced clustering, cost function optimization, load-balanced link construction, and node forwarding selection, the OCNTMS can efficiently construct link sets within clusters and accurately plan the mobile sink’s traversal of rendezvous points. Simulation results show that the OCNTMS reduces energy consumption by 18% and increases network lifetime by 40% compared with existing approaches under the constraint of non-uniform data generation. This greatly improves the network energy efficiency and data transmission efficiency.