Towards 6G wireless communication networks: vision, enabling technologies, and new

[trunghtv]

The fifth generation (5G) wireless communication networks are being deployed worldwide from
2020 and more capabilities are in the process of being standardized, such as mass connectivity, ultra-reliability,
and guaranteed low latency. However, 5G will not meet all requirements of the future in 2030 and beyond, and
sixth generation (6G) wireless communication networks are expected to provide global coverage, enhanced
spectral/energy/cost efficiency, better intelligence level and security, etc. To meet these requirements, 6G
networks will rely on new enabling technologies, i.e., air interface and transmission technologies and novel
network architecture, such as waveform design, multiple access, channel coding schemes, multi-antenna technologies, network slicing, cell-free architecture, and cloud/fog/edge computing. Our vision on 6G is that it
will have four new paradigm shifts. First, to satisfy the requirement of global coverage, 6G will not be limited
to terrestrial communication networks, which will need to be complemented with non-terrestrial networks
such as satellite and unmanned aerial vehicle (UAV) communication networks, thus achieving a space-airground-sea integrated communication network. Second, all spectra will be fully explored to further increase
data rates and connection density, including the sub-6 GHz, millimeter wave (mmWave), terahertz (THz),
and optical frequency bands. Third, facing the big datasets generated by the use of extremely heterogeneous
networks, diverse communication scenarios, large numbers of antennas, wide bandwidths, and new service
requirements, 6G networks will enable a new range of smart applications with the aid of artificial intelligence
(AI) and big data technologies. Fourth, network security will have to be strengthened when developing 6G
networks. This article provides a comprehensive survey of recent advances and future trends in these four
aspects. Clearly, 6G with additional technical requirements beyond those of 5G will enable faster and further
communications to the extent that the boundary between physical and cyber worlds disappears.

https://mega.nz/file/4Z10EZAL#MYeOjD...4XNy3VKfTrCXMg