Waa maxay phone 3G ah, iyo sida uu u na Anfacayn

Waxaan ku nool nahay iyo dhaqdhaqaaq ee dunida ka mid ah macluumaadka la barwaaqaysan, samaynta daraasiin taleefan, ma aha had iyo jeer in xafiiska ama guriga, mid ka mid ah ama qaab kale marka la Heerka 3G soo food (gaabinta for English ah. "Jiilka saddexaad"). Ha na weydiin nafteena: "Waa maxay phone 3G ah?"

Europe hanuuniyey gaar ah "lahjad" qeexan caadiga ah - UMTS, oo ka dhigan tanaasul u dhexeeya heerka CDMA tayo fiican iyo isagoo xaddi weyn dahaarka leh ee macaamiishu GSM. shabakadaha 3G shaqeeyaan kala duwan UHF ah oo ku saabsan 2 GHz heerka xogta of 3.1 Mbit / s ah. Adeegyada aasaasiga ah ee 3G-shabakadaha falan sida isgaarsiinta codka iyo xogta. Halis of kala duwan ee adeegyada gaarka ah u hooseeya, dib calankii hore, ma fahmin waxa maanta phone 3G. gudbinta xogta Maanta bixisaa isgaarsiinta sida baaxadda ganacsiga ee xawaaraha sare (e-mail, shirarka video, fogfog helaan xogta, a maamulka bangiga account), iyo dano gaar ah (kulan, shabakadaha bulshada, nidaamyada multimedia, gadashada online). Heerka Gudbinta dhigmayn kala duwan la xawaaraha shayga. In the case of helo meel - 2048 kbit / s, halka xawaaraha waa 3km / h - 348 kbit / s, 120 km / h - 144 kbit / s. Popular la isticmaala raaxaysan mobile Internet aan xad lahayn, oo iyaga waxay bixisaa fursad waayo go'an bil kasta lacag aan xad lahayn helitaanka shabakadda caalamiga ah. Qaar badan ayaa xiiso u su'aasha ah: "Sidee ugu fiican si ay u doortaan shaqaale ah?" Jawaabta this waa mid fudud. First, loo go'aamiyo haddii aad ku qanacsan tahay goobta caymiska ay. Markaas qiimeeyo heerka bixiyaha. Markaas go'aan.

Laakiin internet 3G - waa maxay? Ma aha oo kaliya telefoonada gacanta. Haddii aad leedahay PC ah, netbook, buugga, ka dibna ku xirmaan xiriir Wi-Fi ah waxaad u baahan tahay a 3G-modem. The ugu boosaska badan waa USB-modem, taas oo si toos ah isku xira in USB-dekedda ah ee computer ah. Intaas waxaa sii dheer waa embodiments suurto gal ExpressCard, PCMCIA. Waayo, warbixintan soo dhaweynta lagu kalsoonaan karo doorashada signal tayada mabda'a xiga devaysa ay kala duwan inta jeer, xawaaraha gudbinta signalka. Waa hagaag, haddii bixiyaha munaaraddii dhow dhow. Marka masaafada u 10-50 km shaqo modem deggan siin doonaa dadban 3G-antenna. waxaa ciidamada Gudaha 5-10 desibelo, laakiin mararka qaar u baahan tahay dibadda, oo awood badan. Si arrintan loo sameeyo, sidoo kale waxaa laga yaabaa inaad mid waxtar leh router 3G Wi-Fi. Fadlan la soco in ee guutooyinkiisa oo saddex noqnoqoshada Internet 3G: 450, 800, 2100 MHz - xulay modem baahisey la anteeno.

Si degdeg ah horumarinta suuqa ee casriga ah oo casri ah iyo bulsho isku. Tani "classic" maraqa, muujinaysa in tani ay phone 3G. Waxay yihiin, marka lagu daro hirgelinta isgaarsiinta codka, waxay leeyihiin oo la dhisay-in 3G modem, ilaaliyaan isgaarsiinta la www ah. On ku laayeen goynta horumarka yihiin HTC iyo Samsung (madal Android) Qalabka iyo Apple (nidaamka hawlgalka macruufka).

Haddaba helo caan ka mid ah dadka isticmaala qalabka mobile la screens weyn - kiniiniyada. Qalabka waxa ka kooban yahay waxaa laga yaabaa in lagu midaysan modem 3G (taasoo lagu taliyey, gaar ahaan haddii saaraha - China) - haddii aan, ka dibna aad u baahan tahay si ay u iibsadaan. Waxaa macquul ah in darawalada "failure" si gooni gooni ah ku iibsaday modem.

Dialectics ee kacaanka sayniska iyo farsamada, fahan qoto dheer saynisyahano ah su'aasha "Waa maxay phone 3G" ayaa keentay in marxaladda soo socota - 4G. In kasta oo ay awood u jira, 3G - kaliya stage hal horumarinta caalamiga ah. 4G technology, taas oo uu leeyahay magac kale - LTE (Long TermEvolution), horumarinta shabakadaha jira, la kordhiyo xawaaraha iyo mugga macluumaadka la isugu gudbiyo. Norway iyo Sweden ayaa waxay horseedday teknoolajiyo cusub. horumarinta dheeraad ah mana jirto talaabo kale: bixiyeyaasha saldhig Ruush "Beeline" iyo MTS, "Megaphone" ayaa horay shaqada bilaabay sida ay heshiis caalami ah oo ku saabsan adeegyada isgaarsiinta ee caadiga ah LTE ah.