Massive Access for 5G and Beyond

Abstract

Massive access, also known as massive connectivity or massive machine-type communication (mMTC), is one of the main use cases of the fifth-generation (5G) and beyond 5G (B5G) wireless networks. A typical application of massive access is the cellular Internet of Things (IoT). Different from conventional human-type communication, massive access aims at realizing efficient and reliable communications for a massive number of IoT devices. Hence, the main characteristics of massive access include low power, massive connectivity, and broad coverage, which require new concepts, theories, and paradigms for the design of next-generation cellular networks. This paper presents a comprehensive survey of aspects of massive access design for B5G wireless networks. Specifically, we provide a detailed review of massive access from the perspectives of theory, protocols, techniques, coverage, energy, and security. Furthermore, several future research directions and challenges are identified.

22 pages, 8 fugures, 6 tables

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Cited by in corpus (11)

• Energy-Efficient MAC for Cellular IoT: State-of-the-Art, Challenges, and Standardization
• Over-the-Air Computing for Wireless Data Aggregation in Massive IoT
• Joint Source-Channel Coding for Semantics-Aware Grant-Free Radio Access in IoT Fog Networks
• Intelligent Reflecting Surface-Aided Joint Processing Coordinated Multipoint Transmission
• Learning-Assisted User Clustering in Cell-Free Massive MIMO-NOMA Networks
• A Comprehensive Overview on 5G-and-Beyond Networks with UAVs: From Communications to Sensing and Intelligence
• Compressive Sensing Based Joint Activity and Data Detection for Grant-Free Massive IoT Access
• Detection and Performance Analysis for Non-Coherent DF Relay Networks with Optimized Generalized Differential Modulation
• Large-Dimensional Random Matrix Theory and Its Applications in Deep Learning and Wireless Communications
• Joint Radar-Communication-Based Bayesian Predictive Beamforming for Vehicular Networks
• Sparse Signatures with Forward Error Correction Coding for Non-Orthogonal Massive Access