Iinkcukacha zobuchwepheshe be-3G
I-3G yesityalo sesizukulwana sesithathu. Iza kunye neentuthuko ngaphezu kobuchwephesha obungaphambili be-wireless, ezifana nokudluliselwa kwejubane eliphezulu, ukufikelela kwi-multimedia, kunye nokujikeleza kwehlabathi.
I-3G isetyenziswa kakhulu ngefowuni kunye neefowuni njengeendlela zokudibanisa ifowuni kwi-intanethi okanye ezinye ii- IP amanxeba ukuze wenze amakholi wezwi nevidiyo, ukukhuphela nokulayisha idatha, kwaye ususe iWebhu.
Imbali
I-3G ilandela umzekelo we-G ukuba i-ITU iqalile ekuqaleni kwawo-1990. Lo mzekelo ngokwenene ungenalo lucingo olubizwa ngokuba yi-IMT-2000 (International Mobile Communications 2000). I-3G, ngoko, iza emva kwe- 2G no- 2.5G , ubuchwepheshe bokuveliswa kwesibini.
Ubuchwephesha be-2G buquka, phakathi kwezinye, iNkqubo yeSizwe yeSelula ( GSM ). I-2.5G ivelise imilinganiselo ephakathi kwe-2G no-3G, kubandakanya i-General Packet Radio Service ( GPRS ), ii-Data Enhanced Rates kwi-GSM Evolution ( EDGE ), i-Universal Mobile Telecommunications System (UMTS) kunye nabanye.
3G Ungcono njani?
I-3G inezibonelelo ezilandelayo ngaphezu kwe-2.5G kunye noonxibelelwano oludlulileyo:
- Izihlandlo eziliqela ezisezantsi zedatha.
- Ukuphuculwa komsindo kunye nevidiyo.
- Inkxaso yeVideoconferencing.
- IWebhu kunye ne-WAP ukukhwela kwizinga eliphezulu.
- I-IPTV (iTV nge-intanethi) inkxaso.
Iinkcukacha zobuGcisa
Intlawulo yokudluliselwa kweenethiwekhi ze-3G iphakathi kwe-128 ne-144 kbps (iikhibitshi ngomzuzwana) kumadivayisi ahambayo ngokukhawuleza, kunye ne-384 kbps zezinto ezihamba phambili (ezifana nabahambahambayo). Kwii- LAN ezingenazintambo ezingenazintambo, isantya sihamba ngaphezu kwe-2 Mbps (2,000 kbps).
I-3G iyisethi yobuchwephesha kunye nemigangatho equka i-W-CDMA, i-WLAN, kunye nomsakazo weselula, phakathi kwabanye.
Izidingo zokuSebenza
Ifowuni ene-3G iyahambelana, njengefowuni okanye ithebhulethi, ngokuqinisekileyo, imfuneko yokuqala. Le yilapho igama elithi "3G ifowuni" livela-ifowuni ene-3G yokusebenza. Eli gama alinanto yokwenza nenani leekhamera okanye imemori. Umzekelo yi-iPhone 3G.
Iifowuni ze-3G zineekhamera ezimbini kuba iteknoloji ivumela umsebenzisi ukuba needivowuni zevidiyo, apho kufuneka khona ikhamera ejongene nomsebenzisi.
Ngokungafani ne- Wi-Fi , ongayifumana ekhululekile kwiindawo zokuhlala , kufuneka ubhalisele kumnikezeli wesevisi ukuze ufumane uxhumano lwenethiwekhi ye-3G. Olu hlobo lwenkonzo ludla ngokuba licebo lolwazi okanye isicwangciso senethiwekhi.
Ifowuni yakho ixhunyiwe kwinethiwekhi ye-3G nge- SIM khadi yayo (kwimeko yefowuni yefowuni) okanye i-3G yekhadi yedata (leyo ingaba yintlobo eyahlukeneyo, njenge- USB , i-PCMCIA, njl.), Ezo zombini zihlala zibonelelwa okanye kuthengiswa ngumboneleli wesevisi.
Yile ndlela ifowuni idibanisa kwi-intanethi xa isetyenziswe kwinethiwekhi ye-3G. Enyanisweni, ifowuni iyahambelana nebuchwepheshe obudala, yingakho ifowuni ehambelana ne-3G ingafumana inkonzo ye-2G ukuba iyafumaneka xa inkonzo ye-3G ingekho.
Yintoni Iindleko ze-3G?
I-3G ayibizi, kodwa kuyabaluleka kubasebenzisi abafuna ukuxhumeka ekuhambeni. Abanye ababoneleli banikezela ngaphakathi kwiphakheji encinci, kodwa ezininzi zazo zicwangcise apho umsebenzisi ehlawulela inani lemali edluliselweyo, kuba iteknoloji ipakethe- isekelwe. Ngokomzekelo, zikho izicwangciso zenkonzo apho kukho izinga elincinane le-gigabyte yokuqala yedatha edluliselweyo, kunye ne-megabyte okanye i-gigabyte indleko emva koko.
3G kunye nezwi
Ubuchwephesha obungenazintlu yindlela yokusebenzisa abasebenzisi beselula ukuba benze iifowuni zamahhala okanye ezincinci emhlabeni wonke kwaye bagcine imali eninzi ngenxa yezicelo zefowuni kunye neenkonzo. Iinqununu ze-3G zinenzuzo yokuba zifumaneke ekuhambeni, ngokungafani ne-Wi-Fi, enqamle kumamitha ambalwa malunga ne- router yokuthumela .
Umsebenzisi onesicwangciso se-3G yefowuni kunye nedatha uxhotyiswe ngokufanelekileyo ukwenza iifowuni zamahhala. Baya ku funeka bafake enye yezinto ezininzi ezifumanekayo zeVoIP , njengeViber, WhatsApp, okanye iTelegram.