Abstract

Wireless sensor networks (WSNs) have been recognized as one of the most essential technologies of the twenty-first century. The applications of WSNs are rapidly increasing in almost every sector because they can be deployed in areas where cable and power supply are difficult to use. In the literature, different methods have been proposed to minimize the energy consumption of sensor nodes to prolong WSNs utilization. In this article, we propose an efficient routing protocol for data transmission in WSNs; it is called energy-efficient hierarchical routing protocol for wireless sensor networks based on fog computing. Fog computing is integrated into the proposed scheme due to its capability to optimize the limited power source of WSNs and its ability to scale up to the requirements of the Internet of things applications. In addition, we propose an improved ant colony optimization algorithm that can be used to construct an optimal path for efficient data transmission for sensor nodes. The performance of the proposed scheme is evaluated in comparison with P-SEP, EDCF, and RABACO schemes. The results of the simulations show that the proposed approach can minimize sensor nodes’ energy consumption, data packet losses, and extends the network lifetime. We are aware that in WSNs, the certainty of the sensed data collected by a sensor node can vary due to many reasons such as environmental factors, drained energy, and hardware failures.

Highlights

  • Next-generation wireless sensor networks (WSNs) are predicted to be deployed in the Internet of things (IoT)

  • A three-tier architecture was developed for the proposed scheme, consisting of three types of nodes—normal sensor nodes, advanced nodes, and fog nodes

  • EEHFC presented a hierarchical routing architecture for data transmission from normal sensor nodes to the data center through fog nodes

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Summary

Introduction

Next-generation wireless sensor networks (WSNs) are predicted to be deployed in the Internet of things (IoT). IoT has revolutionized the current world of technology Electronic devices such as home appliances, medical equipment, various types of sensor nodes, cameras can connect and communicate with one another through the Internet. These devices have some limitations, and these include limited power source, storage, processing power, and bandwidth. Deployment of various types of sensor nodes in the areas of interest makes the networks heterogeneous. The low-end nodes are normal sensor nodes that are constrained with limited computation and sensing abilities. They are responsible for gathering sensed data and transmission

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