期刊
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
卷 39, 期 3, 页码 615-637出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSAC.2020.3019724
关键词
5G mobile communication; Communication system security; Wireless networks; Internet of Things; Reliability; Cellular networks; B5G; massive access; cellular IoT; low power; massive connectivity; broad coverage
资金
- Natural Science Foundation of China [61871344]
- Zhejiang Provincial Natural Science Foundation of China [LR20F010002]
- National Science and Technology Major Project of China [2018ZX03001017-002]
- UNSW Digital Grid Futures Institute, UNSW, Sydney
- Australian Research Council's Discovery Project [DP190101363]
Massive access is a key application scenario for 5G and beyond wireless networks, particularly in cellular IoT. It aims at efficient and reliable communications for a massive number of devices, with characteristics like low power consumption, massive connectivity, and broad coverage, requiring new concepts and theories for next-generation cellular networks.
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 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.
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