Indima ebalulekile ye-C-band kumanethiwekhi e-5G kanye nokubaluleka kwayo

I-C-band, i-spectrum yomsakazo enebanga lemvamisa eliphakathi kuka-3.4 GHz no-4.2 GHz, idlala indima ebalulekile kumanethiwekhi e-5G. Izici zayo ezihlukile zenza kube yisihluthulelo sokufeza izinsizakalo ze-5G zesivinini esiphezulu, ukubambezeleka okuphansi, kanye nokusabalala okubanzi.

1. Ukumbozwa okulinganiselayo kanye nesivinini sokudlulisa

I-C-band ingeye-spectrum ye-mid-band, enganikeza ibhalansi efanelekile phakathi kokumbozwa kanye nesivinini sokudlulisa idatha. Uma kuqhathaniswa ne-low-band, i-C-band inganikeza amazinga aphezulu okudlulisa idatha; futhi uma kuqhathaniswa nama-band anemvamisa ephezulu (njengamagagasi e-millimeter), i-C-band inokumbozwa okubanzi. Lokhu kulinganisela kwenza i-C-band ifaneleke kakhulu ekuthumeleni amanethiwekhi e-5G ezindaweni zasemadolobheni nasezindaweni zasemadolobheni, okuqinisekisa ukuthi abasebenzisi bathola ukuxhumana okusheshayo ngenkathi kunciphisa inani leziteshi ezisetshenziswayo.

2. Izinsizakusebenza eziningi ze-spectrum

I-C-band inikeza i-bandwidth ebanzi ye-spectrum ukusekela umthamo omkhulu wedatha. Isibonelo, i-Federal Communications Commission (FCC) yase-United States yabela i-280 MHz ye-spectrum ye-mid-band ye-5G ku-C-band futhi yayifaka endalini ekupheleni kuka-2020. Abaqhubi abafana ne-Verizon kanye ne-AT&T bathole inani elikhulu lezinsiza ze-spectrum kule ndali, okuhlinzeka ngesisekelo esiqinile sezinsizakalo zabo ze-5G.

3. Sekela ubuchwepheshe obuthuthukisiwe be-5G

Izici zemvamisa ze-C-band ziyenza ikwazi ukusekela ngempumelelo ubuchwepheshe obubalulekile kumanethiwekhi e-5G, njenge-MIMO enkulu (i-multiple-input multiple-output) kanye ne-beamforming. Lobu buchwepheshe bungathuthukisa ukusebenza kahle kwe-spectrum, buthuthukise umthamo wenethiwekhi, futhi buthuthukise ulwazi lomsebenzisi. Ngaphezu kwalokho, inzuzo ye-bandwidth ye-C-band iyenza ikwazi ukuhlangabezana nezidingo zesivinini esiphezulu kanye ne-low-latency zezinhlelo zokusebenza ze-5G zesikhathi esizayo, njenge-augmented reality (AR), i-virtual reality (VR), kanye ne-Internet of Things (IoT).

4. Ukusetshenziswa kabanzi emhlabeni wonke

Amazwe amaningi nezifunda asebenzise i-C-band njengebhendi eyinhloko yemvamisa yamanethiwekhi e-5G. Isibonelo, amazwe amaningi eYurophu nase-Asia asebenzisa ibhendi ye-n78 (3.3 kuya ku-3.8 GHz), kuyilapho i-United States isebenzisa ibhendi ye-n77 (3.3 kuya ku-4.2 GHz). Lokhu kuvumelana komhlaba wonke kusiza ekwakheni uhlelo oluhlangene lwe-5G, ukukhuthaza ukuhambisana kwemishini nobuchwepheshe, nokusheshisa ukuthandwa nokusetshenziswa kwe-5G.

5. Khuthaza ukuthunyelwa kwe-5G kwezentengiselwano

Ukuhlela okucacile kanye nokwabiwa kwe-spectrum ye-C-band kusheshise ukuthunyelwa kwezentengiselwano kwamanethiwekhi e-5G. E-China, uMnyango Wezimboni Nobuchwepheshe Bolwazi uqoke ngokusobala ama-band angu-3300-3400 MHz (ukusetshenziswa kwangaphakathi ngokomthetho), ama-band angu-3400-3600 MHz kanye nama-band angu-4800-5000 MHz njengama-band asebenzayo ezinhlelo ze-5G. Lokhu kuhlela kunikeza isiqondiso esicacile socwaningo kanye nentuthuko kanye nokuthengiswa kwemishini yesistimu, ama-chip, ama-terminal kanye nezinsimbi zokuhlola, futhi kukhuthaza ukuthengiswa kwe-5G.

Ngamafuphi, i-C-band idlala indima ebalulekile kumanethiwekhi e-5G. Izinzuzo zayo ekumbozweni, isivinini sokudlulisa, izinsizakusebenza ze-spectrum kanye nokusekelwa kobuchwepheshe kuyenza ibe yisisekelo esibalulekile sokufeza umbono we-5G. Njengoba ukuthunyelwa kwe-5G emhlabeni wonke kuqhubeka, indima ye-C-band izoba yinto ebaluleke kakhulu, ilethe abasebenzisi ulwazi olungcono lokuxhumana.