1. Machine type communications: key drivers and enablers towards the 6G era;Mahmood;EURASIP J. Wirel. Commun. Netw. Open Access,2021
2. 6G technologies: key drivers, core requirements, system architectures, and enabling technologies;Zong,2019
3. NTT DOCOMO, White paper: 5G evolution and 6G [Online], Available: https://www.nttdocomo.co.jp/english/binary/pdf/corporate/technology/whitepaper_6g/DOCOMO_6G_White_PaperEN_v4.0.pdf.
4. Position location for futuristic cellular communications: 5G and beyond;Kanhere,2021
5. Samsung, 6G: The next hyper-connected experience for all [Online], Available: https://research.samsung.com/next-generation-communications.