[1] [1] KHOROV E,KIRYANOV A,LYAKHOV A,et al. A tutorial on IEEE 802.11ax high efficiency WLANs[J]. IEEE Communications Surveys & Tutorials, 2018,21(1):197-216.

[3] [3] New WiFi6(11ax) Access Points deliver connections in educational environs[J]. Telecomworldwire, 2019(5):90-91.

[5] [5] COONEY M. Juniper's Mist adds WiFi6,AI-based cloud services to enterprise edge[J/OL]. Network World(Online), https://www. networkworld.com/article/3405123/juniper-s-mist-adds-WiFi-6-ai-based-cloud-services-to-enterprise-edge.html, 2019. http://opticsjournal.net/Articles/abstract?aid=OJ190110000509v2y5A8

[6] [6] NETGEAR expands business essentials line with powerful and affordable new WiFi6 Access Point for small business[DB/OL]. (2020-11-24). https://www.businesswire.com/news/home/20201124005625/en/, 2021.

[7] [7] KATO H,TAKEDA R,IDENO Y,et al. Physicians'compliance for hand hygiene in medical outpatient clinics: automated hand-hygiene monitoring with touch sensor and wireless internet[J]. American Journal of Infection Control, 2021,49(1):50-54.