Kukuphi na okulunge ngakumbi - H- okanye 3G-internet? Ukukhetha

Isizukulwana Namhlanje kunzima ukucinga, kodwa xa ifowuni yayiyinto okunene phones, kungekhona Smartphones. Ukuba ungenza iminxeba, akukho ngakumbi. Ngelo xesha linye ayemancinane kwaye lungena epokothweni yakho, kodwa ezi izinto, kwakungenakwenzeka ukuba ukuthatha imifanekiso uze wabelane nabo. Kakade ke, kwakungenakwenzeka ukuba wenze indawo yofikelelo ngomnxeba, singasathethi ke neminye imisebenzi emininzi.

Kodwa ngoku ifowuni beziphantse ukumka, kukho Smartphones kuphela. Namhlanje, ihlabathi gqolo ukuphuhlisa-high speed zintambo elandelayo-sizukulwana, nto leyo esisizathu sokuba kumndilili womsebenzisi we izinto ezininzi zibonakala ayilandeleki. Umzekelo, abasebenzisi badla zama ukufumanisa ukuba yintoni na ekulungeleyo: H okanye 3G? Ingaba izinga data kwezi networks, njl Kodwa kanye ekuqulunqweni mibuzo ayinangqondo, kwaye umntu akaqondi ukuba ukubuza.

Yintoni na intanethi 3G, E, H?

G limele isizukulwana (Generation). Oku kuthetha ukuba xa abenzi bathi 4G, ukuba wayebhekisela kumsebenzi womnatha wireless, olusekelwe phezu ubuchwepheshe wesine-ngezizukulwana. Noko ke, igama elithi "isizukulwana" kwezinye ngengqiqo, bekudidekisa abasebenzisi zesiqhelo. Ngoko ke, simele sizame ukuqonda konke oku.

Apha E no H - lwedatha transmission kwezobuchwepheshe, ziphantsi kwizizukulwana ezahlukeneyo. Kodwa ufuna inkcazelo ethe vetshe.

1F

technologies-generation yokuqala iya kwenza Kwiiselula imveliso abaninzi. Ngokwesiseko esi sizukulwana ziye othandwa kakhulu ubugcisa womnatha TACS ne-NMT. Okokuqala asetyenziswe US, wesibini - eYurophu. Ngoko akukho mntu wacebisa ukubonelela ngeenkonzo data. Ngelo xesha kwakukho iinkqubo analog eyenza iminxeba ilizwi nyanga kunye nezinye iimpawu.

Izinga transfer data yezi teknoloji belufudula luphantsi kakhulu, kwaye ixabiso umzuzu omnye ulingana intywenka yemali, ngoko ke kukho ifowuni yeseli kufuneka ingqalelo okuphambili. Nangona kunjalo, uphuhliso network ayikho elide ukuza. Kungekudala kwakukho 2G womnatha-generation yesibini.

2G and 2.5G

Uphuhliso isizukulwana yesibini ewela ekuqaleni 90. Network esekelwe kuyo baye bakhuselwa ngcono, ngokukhawuleza, kwaye saphucula izinga audio. Ezinye iinethiwekhi inkxaso ekudluliseni imiyalezo emifutshane (SMS). Ngoko ke, akukho namnye babezibuza ukuba H ngcono okanye 3G. Ukuze isizukulwana eyesithathu kodwa ukuphuhlisa.

Ngowe-1997 wabonwa GPRS, yaye yaba kukutshintsha kwimbali yophuhliso yeselula. Yaba revolution yokwenene, ngokuba ubuchwepheshe uye wanikela ithuba kwinethiwekhi GSM data rhoqo ngesantya esiphezulu.

Nangona kunjalo isizukulwana yinxalenye wesithathu, lalingekafiki. Umgangatho wokuqala, leyo ikuvumile iinkcukacha ezipheleleyo 3G, yaba IMT-2000. Inika zedatha of megabits ukuya ku-2 ngomzuzwana.

intanethi Iselula 3G: E, H, G

Ukongezelela rate data ephakamileyo, umgangatho wacebisa utshintsho ngokukhawuleza ukusuka yesibini ukuya uthungelwano besesithathu isizukulwana. Ukuza kuthi ga ngoku, uninzi abanini GSM ndizinyulele UMTS umgangatho.

Ngeli xesha, ngokubanzi kuphuhliswa standard EDGE. ekuqaleni Kuye wazalwa indlela elula yalugudla ngaphandle isizukulwana 2.5G ubuninzi ukutyala imali enkulu kuphuhliso ngokungeyomfuneko. Efowunini nokhutshelo rate data inkxaso zesezantsi EDGE zingafumaneka kabini phezulu kwi standard GPRS.

Hi ndlela leyi, kwaba nzima nale standard, ngokuba kanye akucacanga ngendawo oza kuxhoma kuyo. Iingcali ezininzi attribute yona ngezizukulwana 2.75G.

Emva kweminyaka 10 of network UMTS ifumene uphuculo ngokohlobo technologies HSDPA kunye HSUPA ukuba ukukhawulezisa neyentengiso engenayo nephumayo linyuke kakhulu. Ukuba ifowuni yakho iboniswa phezulu kwe ncwadi H, ngoko oko kuthetha ukuba HSDPA standard zothumelo osebenzayo okanye HSUPA. Kodwa asikwazi sithi kokona kulungileyo: H okanye 3G, kuba H (HSDPA) kubaluleke iteknoloji 3G (network data wesithathu-isizukulwana). Ngoko ke, akukho mbuzo abantu abaninzi kakhulu ubhalo. 3G isantya intanethi kunye H iya kulingana, kodwa ezinye phones bangatshintsha ileta phezu lenjongo ukubonisa ulwazi. Kodwa ke eneneni ayenzi ukutshintsha, kwaye zombini usebenzisa kwinethiwekhi yedatha 3G.

Kodwa namhlanje kwezinye iidolophu okanye iilali xa ifowuni idityaniswe womnatha, uyakwazi ukubona G unobumba okanye E xa ephezulu kwesi sikrini. Oku kuthetha ukuba kusetyenziswa EDGE kunye GPRS nemigangatho, oko kukuthi isizukulwana womnatha okanye 2G 2.75G. Ukuba ngaba kunjalo, kulo mzekelo, wena musa akunamsebenzi, loo nto ilungileyo: H okanye 3G, enyanisweni ezimile njenge iileta G and E ukubonisa indlela ukudibanisa kwinethiwekhi-isizukulwana yesibini.

4G

Kukho iinkcukacha ITM-Advanced ukuba ichaza umgangatho zeminatha 4G nakwesesine isizukulwana. Olu xwebhu ichaza engenayo rate data - 1 Gbit / s kunye iiclamps 100 Mbit / umzuzwana Smartphones. Isimanga, kuba amaxesha 500 250 ngokukhawuleza ngaphezu ugqithiselo data kwi womnatha phambili ITM-2000. Ezi ngezantya nokuba Zizigqithile uqhagamshelo ngqo lwebhendi ebanzi.

Idlala indima ebalulekileyo kwiindawo zasemaphandleni ezifana technologies, njengoko iindleko-ngempumelelo ngakumbi ukuze kwakhiwe 4G-kwisikhululo eza kunika ikhonkco zonke ababhalisele kumgama owela ngaphakathi kwama-10 km. Kungenjalo bekuya kufuneka udale i "ingubo" le ifayibha.

Kodwa kubalulekile ukuphawula ukuba iinkcukacha ITM-Advanced nto inzima kakhulu, ukuba namhlanje akukho phantse akukho umlinganiselo ukuba wayeza kudibana nabo. Oko kukuthi, akukho womnatha opheleleyo-epheleleyo incoko 4G. Ewe, imilinganiselo WiMAX kunye nobuchwepheshe lte ngokusesikweni ukufunda uthungelwano sizukulwana sesine, kodwa ngokuqinisekileyo akunjalo-100%. Isibakala sokuba inethiwekhi iyasetyenziswa, nangona icebo multiplexing mihla, kunye ne-100% ye bandwidth lwabo kugqithiso lwedata ababandakanyekayo, isantya ayide ukuya kwimilinganiselo zichazwe kule nkcukacha zikhankanywe apha ngasentla. Ngethiyori, iteknoloji lte kubandakanya izinga ugqithiselo lweengcombolo ka 100 Mbit / s, ayiphucukanga kakhulu. Noko ke, xa kusenziwa mandundu kakhulu: isantya womnatha ongowona mbps ngaphantsi kwama-30. Kakade ke, nokuba 30 Mbit / s - oku ngokukhawuleza kakhulu, kodwa inyaniso kukuba eli zinga ayihambelani imigaqo. Ngoko ke, umgangatho lte ayikwazi kuqwalaselwa iteknoloji yesine-ngezizukulwana. Ukuza kuthi ga ngoku akukho technology eyayiza ukuhlangabezana neemfuno ITM-Advanced.

3G 4G ngcono?

Abanye abathwali US musa nokuba babhengeza lenguqu ukuya umgangatho besizukulwana sesine. Bahlala kwi network 3G nokuphucula ngayo. Umzekelo, umsebenzisi T-Mobile nokuphucula network 3G, ukuzama ukuphucula HSPA eqhelekileyo ukuya HSPA +. Noko ke, yena babengenakuyichukumisa womnatha yesine-isizukulwana eqhelekileyo. Oku kwenza ingqiqo, kuba umgangatho 3G ibe ngcono ukuya kumda, kusenokwenzeka ukuba ukufikelela izantya eziphezulu. eneneni HSPA efanayo + liya kubonelela bandwidth njengomthengi kwesilarha ka 42 Mbit / s.
Kule meko, umsebenzisi T-Mobile ngokupheleleyo reinterprets yintoni ngokwenene umgangatho 4G kunye Internet ngokukhawuleza. 3G okanye H kwifowuni linokuthetha izinga ugqithiselo lweengcombolo ukuya ku 42 Mbit ngomzuzwana, kodwa ukuza kuthi ga ngoku usebenza kuphela kwababhalisele ka-T-Mobile.

Ngokwemeko ekuyiyo ngokwenyani?

Kubonakala ukuba nothungelwano wesithathu-isizukulwana amaqonga ezopolitiko aphuhliswe yaye bade kwizixeko ezinkulu ukufikelela kwi 4G Internet, kodwa ke kucacile mbi. Kwimimandla emininzi of Russia kunye ngokubanzi kulo lonke Ukraine akukho cula 4G. Ewe apho 4G, nokuba isizukulwana 3G of kakuhle kuphuhliswa. Ivela yokuba kwiilali ezininzi kunye needolophu on Smartphones ezimile njenge oonobumba E livela xa uqhagamshela kwi Internet. Njengoko ubona kulo kwinqaku ngasentla, EDGE ibhekisa kwisizukulwana networks 2.5G kunye "uphulukana" ngaphambi kokuba uthungelwano wesithathu-ngezizukulwana.

Yintoni Internet engcono: 3G okanye H?

Ekuqaleni le nto sasenzelwe ukunceda izikhokhelo lwabasebenzisi mobile ukuqonda kwisizukulwana uthungelwano, njengokuba nayo yonke le migangatho zonxibelelwano lisenokubhidekisa. Ivela yokuba abasebenzisi uzama ukuthelekisa isantya phakathi network isizukulwana lesithathu (3G) kunye nobuchwepheshe HSPA, nto leyo enxulumene ngqo uthungelwano besesithathu isizukulwana. Lwaba ukuthetha, H - oku 3G.