Table of contents. 2020 Index IEEE Communications Surveys&Tutorials Vol. 22 Editorial: Fourth Quarter 2020 IEEE Communications Surveys and Tutorials. IEEE 802.11be Wi-Fi 7: New Challenges and Opportunities. Communication-Efficient Edge AI: Algorithms and Systems. A Survey of Rate-Optimal Power Domain NOMA With Enabling Technologies of Future Wireless Networks. MAC Protocols for Terahertz Communication: A Comprehensive Survey. Toward Smart Wireless Communications via Intelligent Reflecting Surfaces: A Contemporary Survey. Dynamic TDD Systems for 5G and Beyond: A Survey of Cross-Link Interference Mitigation. Architectural Design Alternatives Based on Cloud/Edge/Fog Computing for Connected Vehicles. Caching in Vehicular Named Data Networking: Architecture, Schemes and Future Directions. A Tutorial on NB-IoT Physical Layer Design. Collective Remote Attestation at the Internet of Things Scale: State-of-the-Art and Future Challenges. Edge Computing in Industrial Internet of Things: Architecture, Advances and Challenges. A Systematic Survey of Industrial Internet of Things Security: Requirements and Fog Computing Opportunities. Integration of Blockchain and Cloud of Things: Architecture, Applications and Challenges. Machine-Type Communication for Maritime Internet of Things: A Design. Distributed Control and Communication Strategies in Networked Microgrids. Indoor Intelligent Fingerprint-Based Localization: Principles, Approaches and Challenges. Security in Energy Harvesting Networks: A Survey of Current Solutions and Research Challenges. When Machine Learning Meets Privacy in 6G: A Survey. Security and Privacy Challenges in Connected Vehicular Cloud Computing. A Survey of Biological Building Blocks for Synthetic Molecular Communication Systems. A Survey on Adaptive 360° Video Streaming: Solutions, Challenges and Opportunities. Machine Learning Techniques for Optical Performance Monitoring and Modulation Format Identification: A Survey. Table of contents Editorial: Third Quarter 2020 IEEE Communications Surveys and Tutorials Thirty Years of Machine Learning: The Road to Pareto-Optimal Wireless Networks On Energy Efficient Resource Allocation in Shared RANs: Survey and Qualitative Analysis Sharing Distributed and Heterogeneous Resources toward End-to-End 5G Networks: A Comprehensive Survey and a Taxonomy Wireless Sensing for Human Activity: A Survey A Survey of Machine and Deep Learning Methods for Internet of Things (IoT) Security Deep Reinforcement Learning for Autonomous Internet of Things: Model, Applications and Challenges Complementing IoT Services Through Software Defined Networking and Edge Computing: A Comprehensive Survey Grant-Free Non-Orthogonal Multiple Access for IoT: A Survey CubeSat Communications: Recent Advances and Future Challenges A Comprehensive Survey on Mobility-Aware D2D Communications: Principles, Practice and Challenges Physical Layer Security for Visible Light Communication Systems: A Survey A Survey on SCADA Systems: Secure Protocols, Incidents, Threats and Tactics Exploring the Attack Surface of Blockchain: A Comprehensive Survey The Road Ahead for Networking: A Survey on ICN-IP Coexistence Solutions Table of contents. Editorial: Second Quarter 2020 IEEE Communications Surveys and Tutorials. Orbital Angular Momentum Waves: Generation, Detection, and Emerging Applications. Convergence of Edge Computing and Deep Learning: A Comprehensive Survey. A Survey on 5G Usage Scenarios and Traffic Models. Optical Wireless Hybrid Networks: Trends, Opportunities, Challenges, and Research Directions. Energy and Information Management of Electric Vehicular Network: A Survey. Securing Connected & Autonomous Vehicles: Challenges Posed by Adversarial Machine Learning and the Way Forward. A Survey of IoT Management Protocols and Frameworks.