1 research outputs found
Massive Access for 5G and Beyond
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.Comment: 22 pages, 8 fugures, 6 table