HSPA ua rau tus qauv 3G muab kev ceev ceev ceev
HSPA + yog ib qho ntawm ntau cov lus piav qhia txog kev ceev ceev ntawm koj lub xov tooj qhov internet txuas. Muab yooj yim, HSPA + yog ib lub vib sab 3G uas txuas ntawm txoj kab nruab nrab ntawm 3G thiab 4G speeds.
Qee cov neeg muag khoom lag luam luam tau ua yuam kev hais tias HSPA + ua qhov 4G siab, tab sis qhov no yog kev tsis ncaj.
HSPA + txhais tau hais tias "Evolved High Speed Packet Access" (tseem hu ua HSPA Plus) thiab yog tus txheej txheem rau wireless broadband, muaj peev xwm ua tau cov ntaub ntawv hloov mus txog 42.2 megabits ib zaug (Mbps).
Txawm li cas los, qhov no txhais li cas rau cov neeg siv? Wb saib cov qauv ntawm cov qauv mobile thiab lawv ceev ceev me ntsis kom pom tias qhov no yuav cuam tshuam koj li cas.
Ib Qeb Keeb Kwm Keeb Kwm ntawm Kev Txuas Cov Cai Network
Lub keeb kwm ntawm wireless cov qauv qhia ntawv rov qab mus rau 1G nyob rau hauv 1981, ib tug qauv analog tsuas ntev ua ntej lub advent ntawm smartphones uas tau tso cai yooj yim xov tooj tsuas.
Txij li thaum "G" tsuas txhais tau tias "tiam," 1G tsis hu ua kom txog thaum 2G tshwm sim rau xyoo 1990, txhawb kev sib tham thiab sau ntawv xov xwm.
2G tes hauj lwm
2G speeds tseem qwj-zoo li thaum 14.4 Kbps (kilobits ib pliag). Cov txheej txheem no tau muab kho dua thaum xyoo 1990 los nrog GPRS (General Packet Radio Service), ntxiv kev muaj peev xwm rau lub cuab yeej ua lag luam kom txuas tau "kev txuas ib txwm" nrog kev ceev ntawm 40 Kbps, tab sis cov neeg muag khoom tau muag 100 kauj ruam.
Ib lub 2G network zoo nrog GPRS tau qee zaum raug xa mus rau lub 2.5G network.
Tom qab GPRS yog EDGE (Cov Ntawv Txhawb Cov Ntawv Qhia Txog GSM Evolution), ntau sai dua GPRS, tiam sis tseem tsis yoo txaus kom tiav rau lub cim xeeb tom ntej ntawm 3G, ua haujlwm rau nws tus moniker ntawm 2.75G. Cov iPhones ntxov, piv txwv li, muaj peev xwm ntawm EDGE speeds, uas yog kwv yees li 120 Kbps rau 384 Kbps.
3G Networks thiab HSPA
Nrog lub tswv yim ntawm 3G tus qauv nyob rau hauv 2001, smartphones yeej pib tawm, raws li cov ntaub ntawv hloov ceev thaum kawg tsoo tsis tau tsuas yog lub megabit ib ob tus nqi thaiv, tab sis ntaus speeds txog li 2 Mbps. Ib lub cuab yeej 3G-tau yooj yim heev uas kua tau hu nws lub xov tooj iPhone 3G. Thiab ntawm no yog qhov twg HSPA los hauv.
HSPA (tsis muaj "ntxiv") yog ob qho kev sib txuas ua ke: High Speed Downlink Packet Access (HSDPA) thiab High Speed Uplink Packet Access (HSUPA) - uas tsuas txhais tau hais tias nws cov download thiab upload speeds tsim ntawm tus thawj 3G speeds rau ib ncov cov ntaub ntawv ntawm 14 Mbps thiab 5.8 Mbps nce.
HSPA + tau muab coj los qhia rau xyoo 2008, thiab qee zaum hu ua 3.5G. HSPA + upgraded 3G ntxiv mus rau kev ceev ceev ntau ntawm 10 Mbps, nrog lub ntiaj teb ceev tshaj qhov nruab nrab li 1-3 Mbps. Ntxiv dua thiab, qee cellular nqa nrog 3G HSPA + network tau qhia tawm lawv txoj kev ceev li 4G.
Lus Cim : Nco ntsoov tias cov ntaub ntawv saum toj kawg nkaus rau HSPA + qee zaum tau tshaj tawm li 100 Mbps, los yog max 4G speeds. Qhov no tsis yog; koj yuav tsis tau txais qhov sib txeeb ntawm qhov tua blazing ntawm HSPA + network (nws ceev ceev yog 42 Mbps). Uas tau hais tias, HSPA + yog qhov ntau tshaj 3 G muaj.
4G thiab tes hauj lwm LTE
Tus qauv 4G tuaj yeem ua kom ceev txog tsib zaug sai sai li 3G thiab yog raws li LTE (Long Term Evolution) raws tu qauv. Qhov tseeb, qhov siab tshaj plaws ncov siab tshaj plaws yog xam 100 Mbps, tab sis nruab nrab qhov ceev yuav zoo dua li 3 Mbps mus 10 Mbps - tseem ceev heev thiab tsis muaj dab tsi los scoff ntawm.
Ib tug 4G network ua haujlwm rau ib lub sijhawm sib txawv dua li 3G, yog li yuav tsum paub tseeb tias koj muaj lub cuab yeej ua tau zoo ntawm kev siv nws.
5G tes hauj lwm
5G yog ib lub cuab tam siv tau-ua-tau-tag-siv wireless uas muaj kev txhim kho 4G zoo li nce mus txog 10 zaus sai sai.
Cov tes hauj lwm uas siv HSPA & # 43;
Cov tes hauj lwm khiav 3G los yog cov neeg kho nrog HSPA + thoob plaws hauv lub ntiaj teb. Cov tub lag luam plaub lub tebchaws loj (AT & T, Verizon, T-Mobile, thiab Sprint) txhua qhov muaj kev pabcuam 4G LTE, nyob ntawm qhov chaw, tabsis tseem muaj cov chaw 3G lossis 3G HSPA +.
Xov tooj Compatibility Nrog 3G HSPA
Ntxiv rau cov ntaub ntawv xovtooj ntawm cov xovtooj xws li 3G thiab 4G, cov neeg siv xov tooj ntawm tes yuav tsum paub txog xov tooj cua ntau zaus.
Ib tug 3G network feem ntau yog ua haujlwm ntawm ib qho ntawm tsib lub caij nyoog - 850, 900, 1700, 1900, thiab 2100 - yog li koj yuav tsum nco ntsoov tias koj lub xov tooj 3G txhawb cov frequencies (tag nrho cov xov tooj niaj hnub). Ib lub xov tooj ntawm cov xovtooj uas tau txais kev txhawb zog feem ntau muaj nyob rau ntawm lub thawv, lossis koj tuaj yeem hu rau lub khw muag khoom.