I-2G Yenziwe Iinkcukacha eziMdaka kwii-Cellphones
Kwihlabathi leesefowuni, apho yonke intetho i malunga ne- 4G no- 5G , awukwazi ukucinga ngeteknoloji ye-2G kakhulu, kodwa ngaphandle kwayo, mhlawumbi ungenayo kamva "Gs" njenge-3G, 4G okanye 5G .
2G: Ekuqaleni
I-2G ibonisa iteknoloji yesibini ye-wireless digital. Iinqununu zedijithali ze-2G zatshintsha ubuchwepheshe be-analog 1G, obuvela kuma-1980. Amanethiwekhi e-2G abone ukukhanya kwawo kokuqala kworhwebo kwi- GSM standard. I-GSM, eyenza ukujikeleza kwamazwe ngamazwe okunokwenzeka, kuyimbonakalo yenkqubo yehlabathi yonxibelelwano lweselula.
I-teknoloji ye-2G kwizinga le-GSM yayisetyenziswa ngokusesikweni kwimisebenzi yokuthengisa ngo-1991 eFinland nguRadiolinja, okwangoku yinxalenye ka-Elisa, inkampani eyaziwayo kuma-1990 njenge-Helsinki Telefon Inkampani.
I-teknoloji yesibini yefowuni yeklasi yefoni isithuba sokufikelela kwamanani amaninzi ( TDMA ) okanye ukuhlukana kweefayile ezahlukeneyo (CDMA).
Ukukhuphela kunye nokulayisha isantya kwi-teknologi ye-2G ngu-236 Kbps. I-2G ilandele i- 2.5G , eyayibeka ubuchwepheshe be-2G kwi- 3G .
Izinzuzo ze-2G Technology
Xa i-2G yaziswa kwiisefowuni, yadunyiswa ngezizathu ezininzi. Isalathisi sayo segedijithali sasebenzisa amandla angaphantsi kuneempawu ze-analog ukuze iibhetri ezihamba phambili zihlala ixesha elide. Ubungcali be-teknoloji ye-2G yenze ukuba kwenzeke ukufakwa kwe-SMS-umyalezo osesikweni kunye nomyalezo othandwayo ngokubanzi-kunye nemilayezo ye-multimedia (MMS) kunye nemiyalezo yezithombe. Ukubetha kwe-digital ye-2G kwongeze ubumfihlo kwiedatha kunye neefowuni zezwi. Ummkeli oyifunayo kuphela okanye umnxeba unokufumana okanye awufunde.
2G Ukungabikho
Iifowuni ze-2G zazifuna iimpawu zedijithali ezinamandla ukusebenza, ngoko bekungenakwenzeka ukuba basebenze kwimimandla yasemaphandleni okanye ngaphantsi.