[1] ITU-T FG-NET-2030. Network 2030:a blueprint of technology, applications and market drivers towards the year 2030 and beyond[EB/OL]. Geneva:ITU, 2019(2019-05-07)[2020-04-07]. https://wwwitu.int/en/ITU-T/focusgroups/net2030/Documents/White_Paper.pdf. [2] 6G Flagship, University of Oulu. 6G white paper:key drivers and research challenges for 6G ubiquitous wireless intelligence[EB/OL]. Finland:6G Flagship, 2019(2019-09-13)[2020-04-07] http://jultika.oulu.fi/files/isbn9789526223544.pdf. [3] Zhang Zhengquan, Xiao Yue, Ma Zheng, et al. 6G wireless networks:vision, requirements, architecture, and key technologies[J]. IEEE Vehicular Technology Magazine, 2019, 14(3):28-41. [4] Letaief K B, Chen Wei, Shi Yuanming, et al. The roadmap to 6G:AI empowered wireless networks[J]. IEEE Communications Magazine, 2019, 57(8):84-90. [5] Saad W, Bennis M, Chen Mingzhe. A vision of 6G wireless systems:applications, trends, technologies, and open research problems[J]. IEEE Network, 2020, 34(3):134-142. [6] Zhang Ping, Niu Kai, Tian Hui, et al. Technology prospect of 6G mobile communications[J]. Journal on Communications, 2019, 40(1):141-148. [7] Giordani M, Polese M, Mezzavilla M, et al. Toward 6G networks:use cases and technologies[J]. IEEE Communications Magazine, 2020, 58(3):55-61. [8] Viswanathan H, Mogensen P E. Communications in the 6G era[J]. IEEE Access, 2020, 8:57063-57074. [9] Chen Shanzhi, Liang Yingchang, Sun Shaohui, et al. Vision, requirements, and technology trend of 6G:how to tackle the challenges of system coverage, capacity, user data-rate and movement speed[J]. IEEE Wireless Communications, 2020, 27(2):218-228. [10] 李正茂. 通信4.0:重新发明通信网[M]. 北京:中信出版集团, 2016:36-50. [11] ITU-R. M. 2370-0:IMT traffic estimates for the years 2020 to 2030[EB/OL]. Geneva:ITU, 2015(2015-07-06)[2020-04-07]. http://www.itu.int/pub/R-REP-M.2370. [12] 中国移动研究院. 2030+愿景与需求报告(V1)[EB/OL]. 广州:中国移动, 2019(2019-11-15)[2020-04-07]. http://cmri.chinamobile.com/wp-content/uploads/2019/11/2030愿景与需求报告.pdf [13] 3GPP. TR 37.910 v16.0.0:Study on self-evaluation towards IMT-2020 submission (R16)[EB/OL]. Valbonne-France:3GPP Organizational Partners, 2019(2019-06-03)[2020-04-07]. https://www.3gpp.org/ftp/Specs/archive/37_series/37.910. [14] ITU-R. M. 2410-0:Minimum requirements related to technical performance for IMT-2020 radio interface(s)[EB/OL]. Geneva:ITU, 2017(2017-11)[2020-4-7]. https://www.itu.int/md/R15-SG05-C-0040/en. [15] Xu Zhikun, Han Shuangfeng, Pan Zhengang, et al. EE-SE relationship for large-scale antenna systems[C]//ICC14. Sydney:IEEE Press, 2014:38-44. [16] Cover T M, Thomas J. A. Elements of Information Theory[M]. Hoboken-New Jersey:Wiley & Sons, Inc, 2006:303-307. [17] Chih-Lin I, Rowell C, Han Shuangfeng, et al. Toward green and soft:a 5G perspective[J]. IEEE Communications Magazine, 2014, 52(2):66-73. [18] 易芝玲, 崔春风, 韩双锋, 等. 5G蜂窝物联网关键技术分析[J]. 北京邮电大学学报, 2018, 41(5):20-25. Yi Zhiling, Cui Chunfeng, Han Shuangfeng, et al. Analysis of key technologies of 5G-oriented cellular internet of things[J]. Journal of Beijing University of Posts and Telecommunications, 2018, 41(5):20-25. |