A Comprehensive Survey on 6G Networks:Applications, Core Services, Enabling Technologies, and Future Challenges

Abstract

Cellular Internet of Things (IoT) is considered as de facto paradigm to improve the communication and computation systems. Cellular IoT connects massive number of physical and virtual objects to the Internet using cellular networks. The latest generation of cellular networks, e.g. fifth-generation (5G), use evolutionary and revolutionary technologies to notably improve the performance of wireless networks. However, given the envisioned new use-cases, e.g., holographic communication, and the ever-increasing deployment of massive smart-physical end-devices in IoT, the volume of network traffic has considerably raised, and therefore, the current generation of mobile networks cannot wholly meet the ever-increasing demands. Hence, it is envisioned that the next generation, sixth generation (6G) networks, need to play a critical role to alleviate such challenges in IoT by providing new communication services, network capacity, and ultra-low latency communications (uRLLC). In this paper, first, the need for 6G networks is discussed. Then, the potential 6G requirements and trends, as well as the latest research activities related to 6G are introduced e.g., Tactile Internet and Terahertz (THz). Furthermore, the key performance indicators, applications, new services, and the potential key enabling technologies for 6G networks are presented. Finally, several potential unresolved challenges for future 6G networks are presented.

arXiv comment21 pages

References in corpus (15)

• Wireless Communications with Unmanned Aerial Vehicles: Opportunities and Challenges
• Convergence of Edge Computing and Deep Learning: A Comprehensive Survey
• A Comparative Survey of Optical Wireless Technologies: Architectures and Applications
• Sparse Signal Processing for Grant-Free Massive Connectivity: A Future Paradigm for Random Access Protocols in the Internet of Things
• Low-latency Federated Learning and Blockchain for Edge Association in Digital Twin empowered 6G Networks
• Federated Learning for 6G Communications: Challenges, Methods, and Future Directions
• A quantum access network
• Experimental Superposition of Orders of Quantum Gates
• Sparse Signal Processing Concepts for Efficient 5G System Design
• A Framework for Evaluating Gradient Leakage Attacks in Federated Learning
• Towards 5G Enabled Tactile Robotic Telesurgery
• Uncoordinated access schemes for the IoT: approaches, regulations, and performance
• Six Key Enablers for Machine Type Communication in 6G
• Satellite Based IoT Networks for Emerging Applications
• Wireless Communications for Collaborative Federated Learning

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• A Survey on Privacy for B5G/6G: New Privacy Challenges, and Research Directions
• Tailored nano-electronics and photonics with two-dimensional materials at terahertz frequencies
• Evolution Toward 6G Wireless Networks: A Resource Management Perspective
• A Survey on Rural Internet Connectivity in India