?????????Я???й??????????????????????????鹲???????TDD+?????????TDD+??TDD????????????????4.5G????????????????ζ????????δ??5G??????4.5G??????????????á?
???????????4.5G??????????????????????????α????????棬???????????????????????????????60%????????????????????????????2020???????7???????????????缼???????????????δ??????????????????????????????????????????????
????????LTE???????????Χ?????????GSA?????????2015?????????????393?????????138???????????LTE???硣???У?34????????54??TDD???磬????????LTE?????????????????????TDD????????????50%??
?????????κ???????????????????????????á?????????á?????????????????????????????????5G??????????????????????????????????????
????“???????2022-2023??5G???п???????????????????????????????????????????飬??????????4G?????????????????4.5G??????????”???α????
???????????2011??TD-LTE????????????????????????????????2????????й?????????????????????????????????????
???????????????4G????棬2014?????????????????1100?????????????????У??й????4G????750????????????88%????????????й?????(???)???й????(???)??FDD??4G?????????????????????С???????????滮????????????????4G?????120????
??????????????TDD+??xGbps????????????顣????????????4*4 / 8*8MIMO????????256QAM??????????????????????xGbps???????????????4G????????????顣????????10ms????????飬?????????????
???????????????4G???????????????????????7??????????TDD+?????????????2G???????27??TDD+?????????????????????????????????????Ч?????????????????????顣
????????????Я???????????й??????????????????4.5G LTE-M(LTE-Machine to Machine) ???????????????????????????????????????????
????????????4.5G?????????TDD+?????????4G??5G??????????????檔