LTE vs LTE Advanced
LTE thiab LTE Advanced yog kev kub ceev 4G wireless thev naus laus zis. 3G kev loj hlob xaus ntawm HSPA + thiab cov tswv lag luam txawb tau pib siv 4G tes hauj lwm los muab ntau bandwidth rau cov xov tooj ntawm tes. Cov 4G thev naus laus zis no muab qhov tseeb, LAN kev muaj tiag rau cov xov tooj ntawm tes thiab kom hnov qhov kev paub tiag tiag ntawm kev ua si triple xws li lub suab, video thiab cov ntaub ntawv ceev ceev.
Ob leeg LTE thiab LTE Advanced muab kev nkag siab ceev rau Is Taws Nem sib npaug rau FE txuas. Nrog rau kev sib txuas hauv Is Taws Nem ceev ntawm lub xov tooj ntawm tes, cov neeg siv tuaj yeem txaus siab rau kev hu xov tooj, hu video thiab kev kub ceev rub tawm lossis rub tawm cov ntaub ntawv, thiab saib TV hauv internet hauv kev pabcuam nyob lossis xav tau.
Twb 4G ntse xov tooj handsets tau tso tawm los ntawm Motorola, LG, Samsung thiab HTC feem ntau nrog Android operating system. Android Wi-Fi hotspot feature pab kom peb siv 4G mobile los hloov cov kev pabcuam hauv tsev.
Nyob rau hauv luv luv, 4G tsiv teb tsaws tau txav peb ntawm ib txoj kab kev mus rau 100 txoj kab tsheb loj lossis txoj kev loj mus sai dua. Hauv kev muaj tiag nws coj cov chaw ze dua. Ib yam li hauv Smartphones thaum koj hu video los ntawm LA mus rau Sydney thiab tham nrog ib tug neeg, lub ntsej muag mus ntsib nrog lub suab zoo thiab yees duab coj lub ntiaj teb los ze zog
LTE (3GPP Ntev Lub Sijhawm Evolution) - Txhim Kho UTRA (E-UTRA)
3GPP tau ua tiav cov lus qhia rau Lub Sijhawm Ntev Evolution raws li ib feem ntawm Kev Tshaj Tawm 8. Kev ua haujlwm ntawm LTE pib xyoo 2004 thiab ua tiav xyoo 2009 thiab thawj zaug xa tawm hauv 2010. LTE yuav tsum muaj 326 Mbps nrog 4 × 4 MIMO thiab 172 Mbps nrog 2 × 2 MIMO hauv 20 MHz spectrum. LTE txhawb nqa FDD (Frequency Division Duplexing) thiab TDD (Time Division Multiplexing). Qhov txiaj ntsig tseem ceeb hauv LTE yog qhov kev nkag siab siab nrog qis latency. Hauv kev muaj tiag LTE tab tom muab 120 Mbps nyob rau lub sijhawm no thiab qhov ceev yog nyob ntawm tus neeg siv qhov ze rau tus pej thuam thiab tus naj npawb ntawm cov neeg siv hauv ib cheeb tsam ntawm tes.
LTE Advanced
Yeej 3GPP tab tom hais txog qhov yuav tsum tau ua kom tau raws li qhov tshwj xeeb ntawm IMT Advanced (International Mobile Telecommunications- Advanced) hauv LTE Advanced. Qhov txiaj ntsig tseem ceeb ntawm LTE Advanced yog nws qhov kev sib raug zoo rov qab lub ntsiab lus uas, LTE li tuaj yeem ua haujlwm hauv LTE Advanced thiab LTE Advanced li tuaj yeem ua haujlwm hauv LTE ib yam nkaus. LTE Advanced cov qauv tau txhais hauv 3GPP tso tawm 10.
LTE Advanced xav kom muaj qhov siab tshaj plaws rub tawm ntawm 1000 Mbps hauv qhov xwm txheej tsis tshua muaj kev txav mus los thiab 100 Mbps hauv kev txav siab. Kev txav qis qis txhais tau tias yog kev taug kev ceev (10 km / h) thiab kev txav siab siab li 350 km / teev.
LTE Advanced muab kev ceev ntawm 40 npaug sai dua 3G kev lag luam tes hauj lwm. LTE Advanced muaj All-IP, High Speed, Low Latency thiab zoo spectrum efficiency nyob rau hauv mobile network uas txhim khu kev paub ntawm mobile triple play services.
Qhov txawv ntawm LTE thiab LTE Advanced
(1) LTE Advanced yog rov qab sib xws nrog LTE tab sis LTE tsis rov qab siv tau nrog ib qho 3G tes hauj lwm.
(2) LTE Advanced yuav ua rau pem hauv ntej thiab rov qab sib xws nrog LTE thiab LTE tseem yuav xa mus thiab rov qab sib xws nrog LTE Advanced.
(3) LTE tuaj yeem muab 326 Mbps thiab LTE Advanced tuaj yeem muab 1200 Mbps (1.2 Gbps)
