Indima ephambili ye-C-band kwiinethiwekhi ze-5G kunye nokubaluleka kwayo

I-C-band, i-radio spectrum enoluhlu lwamaza aphakathi kwe-3.4 GHz kunye ne-4.2 GHz, idlala indima ebalulekileyo kwiinethiwekhi ze-5G. Iimpawu zayo ezikhethekileyo zenza kube yimfuneko ekufezekiseni iinkonzo ze-5G ezikhawulezayo, eziphantsi, kunye neenkonzo ezibanzi.

1. Ubungakanani bokugubungela kunye nesantya sokudlulisa

Ibhendi ye-C ikwi-spectrum ye-mid-band, enokubonelela ngokulinganisela okufanelekileyo phakathi kokugubungela kunye nesantya sokudlulisa idatha. Xa kuthelekiswa nebhendi ephantsi, ibhendi ye-C inokubonelela ngamazinga aphezulu okudlulisela idatha; kwaye xa kuthelekiswa neebhendi ezisebenzisa i-frequency ephezulu (ezifana namaza e-millimeter), ibhendi ye-C inogubungela ngokubanzi. Olu lungelelwano lwenza ibhendi ye-C ifaneleke kakhulu ekuthumeleni iinethiwekhi ze-5G kwiindawo zasezidolophini nakwiindawo ezisemaphandleni, ukuqinisekisa ukuba abasebenzisi bafumana uqhagamshelo olusebenzisa isantya esiphezulu ngelixa benciphisa inani lezikhululo zesiseko ezisasazwayo.

2. Izixhobo ezininzi ze-spectrum

I-C-band inika i-wide spectrum bandwidth ukuxhasa umthamo omkhulu wedatha. Umzekelo, i-Federal Communications Commission (FCC) yase-United States yabela i-280 MHz ye-mid-band spectrum kwi-5G kwi-C-band yaza yayifaka kwifandesi ekupheleni kuka-2020. Abaqhubi abafana neVerizon kunye ne-AT&T bafumene inani elikhulu lezixhobo ze-spectrum kule fandesi, nto leyo ebonelela ngesiseko esiqinileyo seenkonzo zabo ze-5G.

3. Xhasa itekhnoloji ye-5G ephucukileyo

Iimpawu ze-frequency ze-C-band ziyenza ikwazi ukuxhasa ngempumelelo ubuchwepheshe obuphambili kwiinethiwekhi ze-5G, njenge-MIMO enkulu (i-multiple-input multiple-output) kunye ne-beamforming. Ezi teknoloji zinokuphucula ukusebenza kakuhle kwe-spectrum, ziphucule umthamo wenethiwekhi, kwaye ziphucule amava omsebenzisi. Ukongeza, inzuzo ye-bandwidth ye-C-band iyenza ikwazi ukuhlangabezana neemfuno zesantya esiphezulu kunye ne-low-latency zezicelo ze-5G zexesha elizayo, ezifana ne-augmented reality (AR), i-virtual reality (VR), kunye ne-Intanethi yezinto (IoT).

4. Ukusetyenziswa ngokubanzi kwihlabathi liphela

Amazwe amaninzi kunye nemimandla isebenzise i-C-band njengebhendi ephambili yefrikhwensi kwiinethiwekhi ze-5G. Umzekelo, uninzi lwamazwe aseYurophu nase-Asia asebenzisa ibhendi ye-n78 (3.3 ukuya kwi-3.8 GHz), ngelixa i-United States isebenzisa ibhendi ye-n77 (3.3 ukuya kwi-4.2 GHz). Oku kuhambelana kwehlabathi lonke kunceda ekwakheni inkqubo ye-5G edibeneyo, ukukhuthaza ukuhambelana kwezixhobo kunye netekhnoloji, kunye nokukhawulezisa ukuthandwa nokusetyenziswa kwe-5G.

5. Khuthaza ukusasazwa kwe-5G kurhwebo

Ukucwangciswa okucacileyo kunye nokwabiwa kwe-C-band spectrum kukhawulezise ukusasazwa kwezorhwebo kwenethiwekhi ze-5G. E-China, uMphathiswa wezoShishino kunye neTekhnoloji yoLwazi uchaze ngokucacileyo iibhendi ze-3300-3400 MHz (ukusetyenziswa ngaphakathi ngokwesiseko), iibhendi ze-3400-3600 MHz kunye ne-4800-5000 MHz njengeebhendi ezisebenzayo zeenkqubo ze-5G. Olu cwangciso lubonelela ngolwalathiso olucacileyo lophando nophuhliso kunye nokuthengiswa kwezixhobo zenkqubo, iitships, iiterminals kunye nezixhobo zovavanyo, kwaye lukhuthaza ukuthengiswa kwe-5G.

Ngamafutshane, i-C-band idlala indima ebalulekileyo kwiinethiwekhi ze-5G. Iingenelo zayo ekugutyungelweni, isantya sokudlulisa, izixhobo ze-spectrum kunye nenkxaso yobugcisa zenza ukuba ibe sisiseko esibalulekileyo sokufezekisa umbono we-5G. Njengoko ukusasazwa kwe-5G kwihlabathi liphela kuqhubeka, indima ye-C-band iya kuba baluleke ngakumbi, izise abasebenzisi amava angcono onxibelelwano.