Internet of Things (IoT) has emerged as a prominent technology providing interconnections between various objects. It is considered the solution for enabling massive connectivity. However, massive connectivity questions the energy requirements and the fundamental requirement of the Green Internet of Things (GIoT). To facilitate GIoT-based solutions for our daily life, society, industry, and future generation, communication systems such as fifth generation (5G) and beyond can play a essential role.

With the growing demand for IoT-based applications, researchers are looking for wireless communication systems/networks that are energy and spectrum-efficient. These systems or networks should provide good quality of service (QoS). In this context, green wireless networks play a major role in the successful realization of the green IoT-based application. Furthermore, the requirement of massive deployment and seamless connectivity among massive devices has inspired researchers to address the design issues and research challenges related to 5G and beyond wireless networks.

This Special Issue aims to focus mainly on the design, implementation, and deployment of 5G-based networks for the successful initiation of GIoT. This Issue also welcomes original research and review articles discussing the challenges in terms of implementation in e-health, intelligent transportation, smart city, etc. In addition, we hope that this Special Issue highlights the opportunities, challenges, and applications of 5GB-GIoT in everyday life. Submissions considering 5G technologies for GIoT are especially welcome. Authors are encouraged to submit theoretical and practical studies relevant to GIoT, hence examining the application of GIoT for the betterment of society.

Potential topics include but are not limited to the following:

• Hardware development and research challenges for implementing 5G GIoT
• Green communications and 5G architectures
• GIoT in relaying network, cognitive radio, non-orthogonal multiple access (NOMA) and reconfigurable intelligent surfaces
• Mobility management in 5G and beyond for GIoT applications
• Cognitive radio and dynamic spectrum management in 5G GIoT
• Research challenges in spectrum management for GIoT
• Performance evaluation and comparative analysis of promising technologies related to green IoT
• Green and ubiquitous computing in 5G and beyond
• Ultra-low latency communications, ultra-reliable communications in 5G and beyond
• Simultaneous wireless information and power transfer (SWIPT) in GIoT
• Device-to-device (D2D) and machine to machine (M2M) communications in green scenarios
• Case studies and real-world deployment scenarios in 5G networks and GIoT
• Edge computing in 5G networks for GIoT applications
• Edge-based federated learning for green IoT services
• Applications of GIoT in machine-type communications and smart cities