Source: https://www.itu.int/en/ITU-D/Regional-Presence/AsiaPacific/SiteAssets/Pages/Events/2016/Oct-CandI2016/CAICT2016/Session%206-1-Technology%20and%20Standard%20of%204G%20LTE-%E6%9D%A8%E6%80%9D%E8%BF%9C-final.pdf