A Comprehensive Survey of 6G Wireless Communications
arXiv:2101.03889
Abstract
While fifth-generation (5G) communications are being rolled out worldwide, sixth-generation (6G) communications have attracted much attention from both the industry and the academia. Compared with 5G, 6G will have a wider frequency band, higher transmission rate, spectrum efficiency, greater connection capacity, shorter delay, broader coverage, and more robust anti-interference capability to satisfy various network requirements. This survey presents an insightful understanding of 6G wireless communications by introducing requirements, features, critical technologies, challenges, and applications. First, we give an overview of 6G from perspectives of technologies, security and privacy, and applications. Subsequently, we introduce various 6G technologies and their existing challenges in detail, e.g., artificial intelligence (AI), intelligent surfaces, THz, space-air-ground-sea integrated network, cell-free massive MIMO, etc. Because of these technologies, 6G is expected to outperform existing wireless communication systems regarding the transmission rate, latency, global coverage, etc. Next, we discuss security and privacy techniques that can be applied to protect data in 6G. Since edge devices are expected to gain popularity soon, the vast amount of generated data and frequent data exchange make the leakage of data easily. Finally, we predict real-world applications built on the technologies and features of 6G; for example, smart healthcare, smart city, and smart manufacturing will be implemented by taking advantage of AI.
References in corpus (31)
- Communication-Efficient Learning of Deep Networks from Decentralized Data
- Federated Learning: Strategies for Improving Communication Efficiency
- Survey of Important Issues in UAV Communication Networks
- Beyond Massive-MIMO: The Potential of Data-Transmission with Large Intelligent Surfaces
- Modeling and Analyzing Millimeter Wave Cellular Systems
- Artificial Intelligence-Enabled Intelligent 6G Networks
- Blockchain for Future Smart Grid: A Comprehensive Survey
- Low-latency Federated Learning and Blockchain for Edge Association in Digital Twin empowered 6G Networks
- Analysis of a Waveguide-Fed Metasurface Antenna
- White Paper on Broadband Connectivity in 6G
- Aeronautical Ad Hoc Networking for the Internet-Above-The-Clouds
- 6G White Paper on Edge Intelligence
- Non-Coherent and Backscatter Communications: Enabling Ultra-Massive Connectivity in 6G Wireless Networks
- Terahertz Communications (TeraCom): Challenges and Impact on 6G Wireless Systems
- 6G White Paper on Machine Learning in Wireless Communication Networks
- Next-generation Wireless Solutions for the Smart Factory, Smart Vehicles, the Smart Grid and Smart Cities
- Performance Analysis of Active Large Intelligent Surfaces (LISs): Uplink Spectral Efficiency and Pilot Training
- 6G: the Wireless Communications Network for Collaborative and AI Applications
- Enabling Technologies For 6g Future Wireless Communications: Opportunities And Challenges
- Towards Federated Learning in UAV-Enabled Internet of Vehicles: A Multi-Dimensional Contract-Matching Approach
- Diagnosing Reinforcement Learning for Traffic Signal Control
- THz Precoding for 6G: Applications, Challenges, Solutions, and Opportunities
- Federated Learning in the Sky: Joint Power Allocation and Scheduling with UAV Swarms
- Explainable Artificial Intelligence (XAI) for 6G: Improving Trust between Human and Machine
- Empowering the Edge Intelligence by Air-Ground Integrated Federated Learning
- AI-assisted PHY technologies for 6G and beyond wireless networks
- Cramér-Rao Lower Bounds for Positioning with Large Intelligent Surfaces
- 6G Massive Radio Access Networks: Key Issues, Technologies, and Future Challenges
- CogRF: A New Frontier for Machine Learning and Artificial Intelligence for 6G RF Systems
- Towards Self-learning Edge Intelligence in 6G
- Blockchain-enabled Resource Management and Sharing for 6G Communications
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- 6G Downlink Transmission via Rate Splitting Space Division Multiple Access Based on Grouped Code Index Modulation