I-LTE ithuthukiswe ukuthi isebenze ku-spectrum ebhanqiwe ye-Frequency Division Duplex (FDD), kanye ne-spectrum engabhanqiwe ye-Time Division Duplex (TDD).
Ukuze isistimu yomsakazo we-LTE iqhube ukuxhumana phakathi kwezinhlangothi ezimbili, kuyadingeka ukuthi kusetshenziswe isikimu esiyi-duplex ukuze idivayisi idlulise futhi yamukele ngaphandle kokungqubuzana.Ukuze kuzuzwe amanani aphezulu edatha, i-LTE isebenzisa i-duplex egcwele lapho kokubili ukuxhumana kwe-downlink (DL) kanye ne-uplink (UL) kwenzeka ngesikhathi esisodwa ngokuhlukanisa i-DL nethrafikhi ye-UL noma ngamafrikhwensi (okungukuthi, i-FDD), noma izikhathi (okungukuthi, i-TDD) .Nakuba ingasebenzi kahle futhi iyinkimbinkimbi kagesi ukuze isetshenziswe, i-FDD ivamise ukuthunyelwa opharetha ngenxa yokwenziwa kabusha kwezinhlelo ezikhona ze-3G spectrum.Ngokuqhathanisa, ukuthunyelwa kwe-TDD kudinga i-spectrum encane kanye nokuqeda isidingo samabhande onogada okuvumela ukupakishwa okusebenza kahle kwe-spectrum.Umthamo we-UL/DL ungashintshwa ngamandla ukuze uhambisane nesidingo ngokunikeza isikhathi somoya esengeziwe kwesinye phezu kwesinye.Kodwa-ke, isikhathi sokudlulisela kumele sivunyelaniswe phakathi kweziteshi eziyisisekelo, kwethulwe ubunzima, kanye nezikhathi zokuqapha ezidingekayo phakathi kozimele abancane be-DL kanye ne-UL, okunciphisa umthamo.
Isikhathi sokuthumela: Aug-13-2022