A review paper on wireless sensor network techniques in Internet of Things (IoT) Kamal Gulati a,⇑ , Raja Sarath Kumar Boddu b , Dhiraj Kapila c , Sunil L. Bangare d , Neeraj Chandnani e , G. Saravanan f a ASIBAS, Amity University, Noida, India b Department of CSE, Lenora College of Engineering, Rampachodavaram, Andhra Pradesh, India c Department of Computer Science & Engineering, Lovely Professional University Phagwara, India d Department of I.T., Sinhgad Academy of Engineering, Pune, India e Military College of Telecommunication Engineering, Mhow, Madhya Pradesh, India f Department of Electrical and Electronics Engineering, KPR Institute of Engineering and Technology, Coimbatore, India article info Article history: Received 6 April 2021 Received in revised form 16 April 2021 Accepted 5 May 2021 Available online xxxx Keywords: Internet of Things (IoT) Wireless Sensor Networks (WSN) Energy-efficiency Network lifetime Data aggregation abstract In recent times, it has been witnessed that wireless systems based on IoT-based have developed rapidly in various sectors. The IoT (Internet of Things) is the network in which physical devices, equipment, sen- sors and other objects can communicate among themselves without human involvement. The WSN (Wireless Sensor Network) is a central component of the IoT, which has proliferated into several different applications in real-time. The IoT and WSNs now have various critical and non-critical applications impacting nearly every area of our everyday life. WSN nodes are usually small and battery-driven machines. Thus, the energy effective data aggregation techniques that increase the lifespan of the net- work are highly significant. Various approaches and algorithms for energy-efficient data aggregation in IoT-WSN systems were presented. This paper reviews the literature with specific attention to aspects of wireless networking for the preservation of energy and aggregation of data. Ó 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 1st International Con- ference on Computations in Materials and Applied Engineering – 2021. 1. Introduction Our everyday life has changed significantly in all respects with the beginning of wireless networking technology. The Internet of Things (IoT) is especially one of the fastest evolving technologies of the future. Multiple devices can be associated in the physical world, which basically changes our everyday life, by adding IoT. The need for communications everywhere and every-time, partic- ularly in fields with increased activity, is, therefore, increasing rapidly. The IoT has been viewed as integration and communication between intelligent objects (things). IoT’s supremacy contributes to new technologies and applications. Such sensors and actuators (for example, home appliances, security cameras and sensors for environmental monitoring) are usually fitted with various types of transceivers, microcontroller devices, and protocols for commu- nication of control and sensor data [1]. Such real time modules such as sensors, are interconnected with one another to transmit sensed data to the centralized repositories, in which the data is cumulatively stored and accessible for users with the right to access. In comparison to conventional wired or wireless network- ing systems, the features of IoT utilizing wireless technologies are somewhat different as the number of communication devices is quite high [2]. However, IoT-based traffic is not usually much critical because of every IoT device senses and transmits some data to a respective IoT Server, thus data produced by a large number of objects might have some effects collectively on efficiency of the network. Therefore, for a long time without any human interfer- ence, the IoT networks will run in a safe and sustainable manner. Heterogeneous WSN that link a wide range of intelligent sen- sors has become the cornerstone for the IOT-based systems all around us, introducing significant enhancements in the near future [3]. The rapid development of these devices has resulted in energy consumption problems [4], which have become highly attractive. On one side, the drastic rise in the rate of communication and https://doi.org/10.1016/j.matpr.2021.05.067 2214-7853/Ó 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 1st International Conference on Computations in Materials and Applied Engineering – 2021. ⇑ Corresponding author. E-mail address: gulatikamal88@gmail.com (K. Gulati). Materials Today: Proceedings xxx (xxxx) xxx Contents lists available at ScienceDirect Materials Today: Proceedings journal homepage: www.elsevier.com/locate/matpr Please cite this article as: K. Gulati, Raja Sarath Kumar Boddu, D. Kapila et al., A review paper on wireless sensor network techniques in Internet of Things (IoT), Materials Today: Proceedings, https://doi.org/10.1016/j.matpr.2021.05.067