https://blog.wongcw.com/2020/10/13/%e9%ab%98%e9%80%9a%e8%8f%af%e7%82%ba%e8%8b%b1%e7%89%b9%e7%88%be%e9%a0%98%e5%85%88wi-fi-6%e6%8a%80%e8%a1%93%e5%b0%88%e5%88%a9%e8%b2%a2%e7%8d%bb%e6%95%b8%e9%87%8f/