Towards 6G wireless communication networks: vision, enabling technologies, and new paradigm shifts
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Published:2020-11-24
Issue:1
Volume:64
Page:
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ISSN:1674-733X
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Container-title:Science China Information Sciences
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language:en
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Short-container-title:Sci. China Inf. Sci.
Author:
You Xiaohu,Wang Cheng-Xiang,Huang Jie,Gao Xiqi,Zhang Zaichen,Wang Mao,Huang Yongming,Zhang Chuan,Jiang Yanxiang,Wang Jiaheng,Zhu Min,Sheng Bin,Wang Dongming,Pan Zhiwen,Zhu Pengcheng,Yang Yang,Liu Zening,Zhang Ping,Tao Xiaofeng,Li Shaoqian,Chen Zhi,Ma Xinying,I Chih-Lin,Han Shuangfeng,Li Ke,Pan Chengkang,Zheng Zhimin,Hanzo Lajos,Shen Xuemin (Sherman),Guo Yingjie Jay,Ding Zhiguo,Haas Harald,Tong Wen,Zhu Peiying,Yang Ganghua,Wang Jun,Larsson Erik G.,Ngo Hien Quoc,Hong Wei,Wang Haiming,Hou Debin,Chen Jixin,Chen Zhe,Hao Zhangcheng,Li Geoffrey Ye,Tafazolli Rahim,Gao Yue,Poor H. Vincent,Fettweis Gerhard P.,Liang Ying-Chang
Abstract
AbstractThe 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-air-ground-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.
Publisher
Springer Science and Business Media LLC
Subject
General Computer Science
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