Imininingwane yobuchwepheshe ye-3G
I-3G yisizukulwane sesithathu sobuchwepheshe obungenawaya. Iza nezithuthukisi ngaphezu kobuchwepheshe obungenazintambo zangaphambili, njengokudluliselwa kwejubane eliphezulu, ukufinyeleleka kwe-multimedia ezithuthukisiwe, nokuzulazula komhlaba jikelele.
I-3G isetshenziselwa kakhulu ngefoni nomakhalekhukhwini njengezindlela zokuxhuma ifoni kwi-intanethi noma amanye amanethiwekhi we- IP ukuze wenze amakholi wezwi nevidiyo, ukulanda nokulayisha idatha, nokusakaza iWebhu.
Umlando
I-3G ilandela iphethini lika-G ukuthi i-ITU iqalile ekuqaleni kwawo-1990. Iphethini empeleni isinyathelo esingenazintambo esibizwa nge-IMT-2000 (International Mobile Communications 2000). Ngakho-ke, i-3G ifika emva kwe- 2G no- 2.5G , ubuchwepheshe bokubili kwesizukulwane.
Ubuchwepheshe be-2G buhlanganisa, phakathi kwabanye, i-Global System for Mobile ( GSM ). I-2.5G ilethe izindinganiso eziphakathi kwe-2G no-3G, kufaka phakathi i-General Packet Radio Service ( GPRS ), amazinga okuthuthukiswa kwedatha we-GSM Evolution ( EDGE ), i-Universal Mobile Telecommunications System (UMTS), nabanye.
I-3G Ingcono Kanjani?
I-3G inezithuthukisi ezilandelayo ngaphezu kwama-2.5G namanethiwekhi angaphambilini:
- Izivinini eziphindwe izikhathi eziningana.
- Ukusakaza umsindo wevidiyo nomculo.
- Ukusekelwa kwe-Videoconferencing.
- Ukuphequlula iwebhu ne-WAP ngesivinini esiphezulu.
- I-IPTV (i-TV ngokusebenzisa i-intanethi) ukwesekwa.
Imininingwane yobuchwepheshe
Inani lokudluliswa kwamanethiwekhi e-3G liphakathi kuka-128 no-144 kbps (ama-kilobits ngomzuzwana) wamadivayisi ahamba ngokushesha, futhi ama-384 kbps amancane (njengabahamba ngezinyawo). Kwi- LAN engenantambo engahleliwe , ijubane lihamba ngaphezu kwe-2 Mbps (2,000 kbps).
I-3G isethi yobuchwepheshe namazinga afaka i-W-CDMA, i-WLAN, nomsakazo weselula, phakathi kwabanye.
Izidingo Zokusetshenziswa
Idivayisi ehambisana ne-3G, efana nefoni noma ithebulethi, yiyona, imfuneko yokuqala. Yilapho igama elithi "ifoni ye-3G" livela-ifoni enokusebenza kwe-3G. Leli gama alinandaba nhlobo lamakhamera noma inkumbulo enayo. Isibonelo yi-iPhone 3G.
Amafoni we-3G ngokuvamile ane amakhamera amabili kusukela ubuchwepheshe buvumela umsebenzisi ukuthi abe namakholi wevidiyo, lapho kubonakala khona ikhamera ebhekene nomsebenzisi.
Ngokungafani ne- Wi-Fi , ongayithola mahhala kuma- hotspots , udinga ukubhalisela umhlinzeki wesevisi ukuze uthole uxhumano lwenethiwekhi ye-3G. Loluhlobo lwenkonzo luvame ukubizwa ngokuthi uhlelo lwemininingwane noma uhlelo lwenethiwekhi.
Idivayisi yakho ixhunywe kwinethiwekhi ye-3G nge- SIM khadi yayo (uma kwenzeka ifoni ephathekayo) noma ikhadi layo le-3G (okungaba ngezinhlobo ezahlukene, njenge- USB , i-PCMCIA, njll), kokubili okuhlinzekwayo noma kuthengiswa ngumhlinzeki wesevisi.
Yile ndlela idivayisi exhuma ngayo kwi-inthanethi uma ingaphakathi kwenethiwekhi ye-3G. Eqinisweni, le divayisi ibuyele emuva iyahambisana nobuchwepheshe obudala, yingakho ifoni ehambisanayo ye-3G ingathola isevisi ye-2G uma itholakala uma isevisi ye-3G ingekho.
Yini Indleko Ye-3G?
I-3G ayishibhile, kodwa ibalulekile kubasebenzisi abadinga uxhumano ekuhambeni. Abanye abahlinzeki bayinikeza ngaphakathi kwephakethe elibiza kakhulu, kodwa iningi lazo lihlela lapho umsebenzisi akhokhela khona inani lemininingwane edluliselwe, ngoba ubuchwepheshe buyi- packet -basekelwe. Isibonelo, kunezinhlelo zesevisi lapho kunezinga eliphansi le-gigabyte yokuqala yedatha edluliselweyo, kanye ne-megabyte ngayinye noma izindleko ze-gigabyte emva kwalokho.
I-3G nezwi
Ubuchwepheshe obungenazintambo kuyindlela yabasebenzisi beselula ukwenza izingcingo zamahhala noma ezishibhile emhlabeni jikelele futhi ulondoloze imali eningi ngenxa yezicelo nezinsiza zamuva zefoni. Amanethiwekhi we-3G anenzuzo yokutholakala ekuhambeni, ngokungafani ne-Wi-Fi, okukhawulelwe kumamitha ambalwa azungeze umzila wokuthumela .
Umsebenzisi onesimo sefoni ye-3G nedatha uhlomele kahle ukwenza amakholi efoni mahhala. Kuzomelwe nje ukufaka enye yezinhlelo eziningi ze- VoIP zamahhala, njenge-Viber, WhatsApp, noma i-Telegram.