参考文献

[1] AAZHANG B, AHOKANGAS P, ALVES H, et al. Key drivers and research challenges for 6G ubiquitous wireless intelligence (white paper)[R]. University of Oulu, 2019.

[2] DAVID K, BERNDT H. 6G vision and requirements: is there any need for beyond 5G? [J]. IEEE Vehicular Technology Magazine, 2018, 13(3): 72-80.

[3] SAAD W, BENNIS M, CHEN M Z. A vision of 6G wireless systems: applications, trends, technologies, and open research problems[J]. IEEE Network, 2020, 34(3): 134-142.

[4] BI Q. Ten trends in the cellular industry and an outlook on 6G[J]. IEEE Communications Magazine, 2019, 57(12): 31-36.

[5] ZHANG Z Q, XIAO Y, MA Z, et al. 6G wireless networks: vision, requirements, architecture, and key technologies[J]. IEEE Vehicular Technology Magazine, 2019, 14(3): 28-41.

[6] ITU. IMT vision—framework and overall objectives of the future development of IMT for 2020 and beyond: ITU-R M.2083-0[S]. 2015.

[7] 张平， 牛凯， 田辉， 等． 6G移动通信技术展望[J]． 通信学报， 2019, 40(1): 141-148.

[8] 尤瓦尔·赫拉利． 未来简史[M]． 林俊宏， 译． 北京： 中信出版社， 2017.

[9] NEAL S. Snow crash[M]. New York: Bantam Books, 1992.