Yikuphi okungcono - H- noma 3G-inthanethi? Ukukhetha

isizukulwane sanamuhla Kunzima ukukucabanga, kodwa uma amafoni empeleni zazingu amafoni, hhayi Smartphones. Abakwazi ukwenza amakholi, engasekho. Ngesikhathi esifanayo base amancane esifanelana ephaketheni lakho, kodwa lezi zobuchwepheshe, kwakungenakwenzeka ukuthatha izithombe futhi wabelane nabo. Yiqiniso, kwakungenakwenzeka ukuba wenze ukufinyelela ngocingo iphuzu, ingasaphathwa neminye imisebenzi eminingi.

Kodwa manje ifoni zicishe zakhubeka, kukhona Smartphones kuphela. Namuhla, izwe uyaqhubeka ukuthuthukisa ngesivinini alandelayo wireless inethiwekhi, yingakho umsebenzisi isilinganiso izinto eziningi kudida kakhulu. Isibonelo, abasebenzisi ngokuvamile zama ukuthola ukuthi yini ezilungele kangcono: H noma 3G? Ingabe izinga idatha kulezi amanethiwekhi, njll Kodwa kakhulu ekwakhiweni mibuzo eyinqaba, futhi umuntu ayiqondi ukuthi yini ukubuza.

Uqondeni internet 3G, E, H?

G imele isizukulwane (Generation). Lokhu kusho ukuthi lapho abakhiqizi uthi 4G, basuke ebhekisela kunethiwekhi engenantambo, ogxile ubuchwepheshe oyisizukulwane sesine. Nokho, igama elithi 'isizukulwane' ngomqondo othile, wayephambanisa abasebenzisi abavamile. Ngakho-ke, kumelwe sizame ukuqonda konke lokhu.

Lapha E futhi H - lwedatha transmission technology, okungokwendlela izizukulwane ezahlukene. Kodwa lokhu kudinga incazelo eningiliziwe.

1G

-Lokuqala isizukulwane ubuchwepheshe uzokwenza omakhalekhukhwini umkhiqizo mass. Ngesisekelo lesi sizukulwane babé ethandwa kakhulu inethiwekhi ubuchwepheshe TACS futhi NMT. Okokuqala esetshenziswa e-US, i-yesibili - eYurophu. Khona-ke akekho ngisho wasikisela ukuhlinzeka amasevisi wedatha. Ngaleso sikhathi kwakunabamemezeli izinhlelo analog ukuthi unike amandla izingcingo ngezwi bese ukunikeza ezinye izici.

Izinga ukudluliswa kwedatha kwalamatheknoloji kwaba ongaphakeme, futhi intengo ngomzuzu owodwa kuwufanele imali eningi, kuyoba njalo nokuba khona ngomakhalekhukhwini angase sibhekwa njengokudla okuphambili. Nokho, ukuthuthukiswa inethiwekhi akuyona eside ukufika. Ngokushesha kwase lesibili isizukulwane 2G inethiwekhi.

2G futhi 2.5G

Ukuthuthukiswa isizukulwane sesibili uwela ekuqaleni 90s. Uxhumano kwezindlu kusekelwe kuyo baye bavikelwa kangcono, ngokushesha, futhi ngcono ikhwalithi yomsindo. Amanye amanethiwekhi ukusekela ukudluliswa kwemiyalezo emifushane (i-SMS). Ngakho-ke, akekho wazibuza ukuthi H kangcono noma 3G. Ukuze isizukulwane sesithathu sasinobuso kodwa ukuthuthukisa.

Ngo-1997 wabonakala GPRS, futhi waba unyaka wenguquko emlandweni ukuthuthukiswa yeselula. Kwakuyisikhathi revolution yangempela, ngoba ubuchwepheshe unikezele ithuba GSM idatha njalo ngejubane eliphezulu.

Nokho, kwakungakabi isizukulwane agcwele lwesithathu. Izinga lokuqala, okuyinto ivume esifakiwe ngokugcwele 3G, kwaba IMT-2000. Linikeza zedatha afika ku 2 megabits ngomzuzwana.

internet Ehambayo 3G: E, H, G

Ngaphezu ephakeme rate idatha, indinganiso aphakanyisiwe inguqulelo okusheshayo lesibili eyesithathu amanethiwekhi isizukulwane. Kuze kube yimanje, iningi GSM opharetha oyikhethile ejwayelekile UMTS.

Ngalesi sikhathi, kabanzi athuthukile EDGE ejwayelekile. It ekuqaleni wazalwa indlela elula ngawakhamela out esiphezulu isizukulwane 2.5G ukutshala imali enkulu ukuthuthukiswa ngokungadingekile. Ocingweni shoka EDGE standard ingatholakala kwedatha rate kabili minengi GPRS ejwayelekile.

By the way, kwakunzima nale ejwayelekile, ngoba kanye akucaci kuphi akubeka. Ochwepheshe abaningi baxhumanisa lokho 2.75G isizukulwane.

Ngemva kweminyaka engu-10 kwenethiwekhi UMTS wathola ukuthuthukiswa ngesimo HSDPA futhi HSUPA ubuchwepheshe ukuthi usheshise uhlelo traffic namakholi angenayo naphumayo kuye kwanda kakhulu. Futhi uma ifoni yakho ibonakala phezulu uhlamvu H, khona-ke kusho ukuthi iyasebenza ukudluliswa HSDPA ejwayelekile noma HSUPA. Kodwa thina asinakulokotha sizifake bewutjho bonyana ngiyiphi kangcono: H noma 3G, ngoba H (HSDPA) kusala ubuchwepheshe 3G (oyisizukulwane sesithathu kuhleloxhumano lwedatha). Ngakho-ke, umbuzo abantu abaningi akuzona ngempela okunengqondo. 3G ijubane inthanethi futhi H kuzolingana, kodwa ezinye amafoni Ungashintsha incwadi phezu isibonisi iphaneli ukwazisa. Kodwa empeleni akashintshi, futhi kuzo zombili izindawo usebenzisa 3G kuhleloxhumano lwedatha.

Kodwa ngisho nanamuhla emadolobheni athile noma amadolobhana uma ifoni ixhunywe kunethiwekhi, ungabona G incwadi noma E phezulu esibukweni. Lokhu kusho ukuthi wasebenzisa EDGE kanye GPRS mazinga, okungukuthi inethiwekhi isizukulwane noma 2G 2.75G. Uma wenza kanjalo, kulesi simo, ungenzi lutho, lokho kungcono: H noma 3G, eqinisweni ezimise njengoba izincwadi G no-E ukukhombisa indlela ukuxhuma kunethiwekhi lesibili isizukulwane.

4G

Kube sebhithi ITM-Advanced ukuthi ichaza nendinganiso kwesizukulwane sesine 4G amanethiwekhi. Lowo Mbhalo wangonyaka we ichaza engenayo idatha isilinganiso - 1 Gbit / s futhi terminals 100 Mbit / isekhondi Smartphones. Umxhwele, kuba ngokushesha izikhathi 500 futhi 250 kuka ukudluliswa kwedatha kuyinto inethiwekhi eziphambili ITM-2000. Lezi ngesivinini ngisho ukudlula uxhumano ngqo broadband.

Kufeza indima ebalulekile ezindaweni zasemakhaya ubuchwepheshe obufana, njengoba ngaphezulu engabizi ukwakha 4G-esiteshini oluzohlinzekela isixhumanisi bonke ababhalisile ngaphakathi endaweni engaba 10 km. Kungenjalo-ke kuzodingeka ukudala "ingubo" we-fiber.

Kodwa kuyafaneleka ukuthi sebhithi ITM-Advanced efunwa ngakho, ukuthi namuhla kukhona cishe akukho indinganiso wayezophinde ahlangane nabo. Okusho ukuthi, akukho inethiwekhi agcwele 4G. Yebo, ingabe i-WiMAX ne-LTE ubuchwepheshe amazinga ngokomthetho ukufunda wesine inethiwekhi isizukulwane, kodwa ngokuqinisekile akulona 100%. Iqiniso lokuthi inethiwekhi isetshenziswa, nakuba yesimanje multiplexing icebo, 100% we-bandwidth zabo ukudlulisa idatha abathintekayo, ijubane akukakabi ngokuvumelana nezindinganiso ezichazwe ezibekiweko eshiwo ngenhla. Okwazekayo, LTE ubuchwepheshe kuhilela ukudlulisa idatha izinga 100 Mbit / s, ehlaba umxhwele. Nokho, umkhuba ke zimbi kakhulu: ijubane inethiwekhi uqobo esingaphansi 30 Mbps. Yiqiniso, ngisho 30 Mbit / s - lena ngejubane elikhulu kakhulu, kodwa iqiniso liwukuthi lokhu izinga ayihambisani the sebhithi. Ngakho-ke, i-standard LTE ayikwazi kubhekwe ubuchwepheshe oyisizukulwane sesine. Kuze kube manje akukho ubuchwepheshe uzohlangana izidingo ITM-Advanced.

3G 4G kangcono?

Ezinye abathwali US musa ngisho yamemezela kwathatha wesine isizukulwane ejwayelekile. Aqhubeka kunethiwekhi 3G futhi uthuthukise ke. Ngokwesibonelo, u-opharetha-T-Mobile ithuthukela inethiwekhi 3G, abazama ukuthuthukisa HSPA ejwayelekile HSPA +. Nokho, lokhu akusho ukuthi ngisho uthinte ejwayelekile inethiwekhi oyisizukulwane sesine. Lokhu kwenza umqondo, ngoba ejwayelekile 3G lithuthukile umkhawulo, kungenzeka ukuba sifinyelele ngesivinini. Kungokufanayo HSPA + empeleni ukunikeza bandwidth zokubhalisa nge throughput 42 Mbit / s.
Kule ndaba, opharetha-T-Mobile ngokuphelele reinterprets yini ngempela ejwayelekile ye-4G kanye Intanethi esheshayo. 3G noma H efonini lingasho izinga ukudluliswa kwedatha kufika ku-42 Mbit ngomzuzwana, kodwa kuze kube manje usebenza kuphela ababhalisile-T-Mobile.

Njengoba izinto ume ngokoqobo?

Kubonakala ukuba amanethiwekhi oyisizukulwane sesithathu kukhona athuthukiswe kahle futhi ube ngisho emadolobheni amakhulu ukufinyelela ku 4G Inthanethi, kodwa empeleni zibe zimbi nakakhulu. Ezindaweni eziningi zaseRussia kanye ngokuvamile lonke elase-Ukraine akukho Ukusabalala 4G. Yebo kukhona 4G, ngisho noma i-3G isizukulwane kabi athuthukile. Kuziwa yokuthi amadolobhana amaningi nemizana Smartphones ezimise njengoba izincwadi E elivela uma ukuxhuma kwi-Inthanethi. Njengoba ubona kusukela esihlokweni ngenhla, EDGE libhekisela isizukulwane 2.5G amanethiwekhi kanye "kungazifinyeleli" ngaphambi ngisho amanethiwekhi oyisizukulwane sesithathu.

Yini-inthanethi ubengcono: 3G noma H?

Ekuqaleni le nto yayihloselwe ukusiza ababhalisile opharetha mobile ukuqonda isizukulwane amanethiwekhi, njengoba nazo zonke izimiso zokuxhumana zingadida. Kuziwa yokuthi abasebenzisi uzama ukuqhathanisa ijubane phakathi inethiwekhi kwesizukulwane sesithathu (3G) kanye HSPA ubuchwepheshe, okuyinto okuhlobana ngokuqondile eyesithathu amanethiwekhi isizukulwane. ukukhuluma Cishe, H - lena 3G.