2G kev sib txuas lus network thev naus laus zis, tiam thib ob ntawm kev sib txuas lus xov tooj ntawm tes, yog digital mobile kev sib txuas lus thev naus laus zis tom qab thawj tiam ntawm cov xov tooj ntawm tes analog (1G). Cov hauv qab no yog cov lus piav qhia ntxaws txog 2G kev sib txuas lus network thev naus laus zis:
Lus txhais:2G kev sib txuas lus network technology siv cov teeb liab digital rau lub suab thiab cov ntaub ntawv xa mus, hloov 1G analog kev sib txuas lus. Nrog nws cov thev naus laus zis thev naus laus zis thev naus laus zis ua lub hauv paus tseem ceeb, nws cim cov cuab yeej sib txuas lus mobile los ntawm lub sijhawm analog mus rau digital era.
Core nta:Digitalization, high-speed cov ntaub ntawv kis tau tus mob (txog 100kbps), cov kev pab cuam multimedia (xws li SMS, MMS), wireless internet nkag (txawm hais tias qhov ceev kuj qeeb).
Tus qauv tseem ceeb:2G thev naus laus zis feem ntau muab faib ua ob tus qauv, ib qho yog raws li lub sijhawm faib ntau yam nkag (TDMA) thev naus laus zis kev txhim kho, mus rau lub ntiaj teb kev sib txuas lus mobile (GSM) ua tus sawv cev; Lwm qhov IS raws li kev faib ntau yam nkag (CDMA) thev naus laus zis, xws li IS-95 (tseem hu ua cdmaOne).
Cov ntsiab lus technical:GSM tshuab txais cov channel multiplexing thev naus laus zis ntawm TDMA, faib cov kev sib txuas lus ntau zaus hauv ntau lub sijhawm, thiab txhua lub sijhawm qhov kis tau tus neeg siv cov ntaub ntawv. Tsis tas li ntawd, GSM kuj siv channel coding thiab encryption technology los xyuas kom meej kev sib txuas lus kev ruaj ntseg thiab cov ntaub ntawv ntseeg tau.
Daim ntawv thov:2G kev sib txuas lus network thev naus laus zis tau siv dav hauv kev sib txuas lus ntawm tes, muab cov neeg siv lub suab hu, xa SMS thiab lwm yam haujlwm yooj yim. Nyob rau tib lub sijhawm, nws kuj tau tsim lub hauv paus rau txoj kev loj hlob ntawm lub xov tooj ntawm tes Internet, txhawb nqa cov kev xav tau ntawm wireless Internet thaum ntxov. Tsis tas li ntawd, nyob rau hauv lub tshav pob ntawm iot, 2G tes hauj lwm muaj peev xwm mus txuas thiab txhawb ib tug loj tus naj npawb ntawm tsawg-ceev, tsis tshua muaj nqi, tsawg-power iot li.
Social cuam tshuam:Kev taw qhia ntawm 2G thev naus laus zis tau txhawb nqa qhov nrov thiab kev loj hlob ntawm kev sib txuas lus ntawm tes, ua rau tib neeg tuaj yeem hu xov tooj thiab sib pauv ntaub ntawv txhua lub sijhawm thiab nyob qhov twg. Txawm li cas los xij, nrog kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis thiab kev txhim kho ntawm tiam tshiab ntawm kev sib txuas lus thev naus laus zis, cov kev txwv ntawm 2G tes hauj lwm hais txog kev ceev, peev xwm thiab kev pab them nqi tau maj mam tshwm sim, thiab tau hloov los ntawm 3G, 4G thiab txawm tias 5G tes hauj lwm.
Qhov peb pom tam sim no:Ntau lub teb chaws thiab cheeb tsam tau hloov pauv 2G tes hauj lwm los nqis peev peev hauv kev lag luam nrawm dua, siv tau zoo dua. Txawm li cas los xij, hauv qee thaj chaw deb lossis qee qhov kev thov tshwj xeeb, 2G tes hauj lwm tseem ua lub luag haujlwm tseem ceeb.
Yav tom ntej trend:Nrog rau kev txhim kho txuas ntxiv thiab kev txhawb nqa ntawm 5G thiab yav tom ntej 6G, 7G thiab lwm yam tshiab kev sib txuas lus thev naus laus zis, 2G tes hauj lwm yuav maj mam thim tawm ntawm theem keeb kwm. Tab sis tib lub sijhawm, peb yuav tsum pom qhov tshwj xeeb zoo thiab daim ntawv thov muaj peev xwm ntawm 2G thev naus laus zis hauv qee qhov tshwj xeeb.
Piv txwv li, 2G kev sib txuas lus network thev naus laus zis yog qhov tseem ceeb hauv kev txhim kho kev sib txuas lus hauv xov tooj ntawm tes, uas coj kev sib txuas lus tsis tau pom dua rau tib neeg nrog nws cov yam ntxwv ntawm digitization, high-speed data transmissions thiab multimedia services. Txawm li cas los xij, nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis thiab kev txhim kho ntawm tiam tshiab ntawm kev sib txuas lus thev naus laus zis, 2G tes hauj lwm tau ntsib cov qauv hloov pauv.
