Routing Protocols in WSN Assisted IoT Infrastructure - A Review
Rakesh Kumar Lenka, Amiya Kumar Rath, Suraj Kumar Sharma · 2019
The Internet of Things (IoT) can be characterized as a powerful and universal system which empowers checking and control of the physical condition by gathering, preparing, and breaking down the information created by sensors. The huge number of wireless sensor devices are interconnected to form a Wireless Sensor Network (WSN) which completes the IoT infrastructure. These sensor devices have many functionalities, such as data sensing, data transmission, intercommunication, computation, etc. The IoT devices sense and monitor the ambient conditions such as temperature, pressure, humidity, movements, speed, etc. of objects around it and convert that sensed signal to an electric signal. The received signal is processed, and useful information is extracted out of it, and the information is transmitted to a data center. These sensor networks have many applications in the field of military surveillance, healthcare, industries, environmental, etc. Mostly, the battery is the only source of energy for a node, and it is quite difficult to recharge node batteries. Hence, the design of proper routing protocol is required to extend the network lifetime. Many routing techniques have been proposed to solve this problem. All the energy efficient protocols that were proposed can be classified into three types, namely flat, hierarchical, and location-based protocols. In this paper, various energy efficient, position-aware state-of-art routing protocols based on their network structure are analyzed.