Research Area:  Wireless Sensor Networks
Wireless sensor networks (WSNs) are application-oriented and mainly used in the following fields, such as battleground surveillance, border security, and disaster management. The sensor nodes should be extra reliable, and also, high consistency is needed to perform these tasks. Therefore, heterogeneous wireless sensor networks (HWSNs) are introduced to enhance the network lifetime and stability period by minimizing the nodes communicative distance from mobile sinks (MSs). The maximum amount of energy is consumed while communicating the data from nodes to a single sink. In this work, multiple mobile sinks (MMSs) are used to transfer the data from nodes to sink with less energy consumption and a reduced number of hops. Also, higher connectivity is ensured as the sinks are placed close to the nodes, and data can be successfully delivered to sinks. This work reveals the importance of multiple MSs in HWSNs. The use of MMSs and cluster-based routing approaches improves the efficiency of data collection in HWSNs. K-medoid with adaptive sunflower optimization algorithm is used for the selection of cluster head (CH). To achieve energy efficiency (EE), detecting an optimal route for MS is a critical task. Then, the hybrid Harris Hawk and ant colony optimization (HANT) algorithm-based sink moving strategy is used for finding an optimal traversal path. The proposed heterogeneous network is implemented in the network simulator (version 2) (NS2) platform. Simulation results show enhancement in EE in terms of network lifetime, stability period, several dead and alive nodes, and networks remaining energy.
Author(s) Name:   Preeti Gupta, Sachin Tripathi, Samayveer Singh
Journal name:  INTERNATIONAL JOURNAL OF COMMUNICATION SYSYTEMS
Publisher name:  Wiley
Volume Information:  Volume33, Issue18 December 2020
Paper Link:   https://onlinelibrary.wiley.com/doi/abs/10.1002/dac.4641