Telstra 4G LTE (FD-LTE) vs Vividwireless 4G LTE (TD-LTE) hauv Australia
Telstra LTE (FD-LTE) thiab Vividwireless LTE (TD-LTE) yog ob lub suab ntawm LTE thev naus laus zis uas yuav raug siv hauv 4G network hauv Australia los ntawm Telstra thiab VividWireless. Telstra yuav siv nws cov 2G spectrum (1800MHz) uas twb muaj lawm los xa 4G LTE network nrog FD-LTE thev naus laus zis, pib hauv CBDs hauv nroog loj. Vividwireless yog lub tuam txhab tshiab heev uas nkag mus hauv kev lag luam kev sib txuas lus tsuas yog hauv 2010 nrog kev tshaj tawm ntawm nws 4G wireless broadband network hauv Perth thaum Lub Peb Hlis, 2010. VividWireless tab tom nthuav nws cov network mus rau hauv nruab nrab CBDs hauv nroog loj. Vividwireless muaj daim ntawv tso cai rau 70 MHz thiab 100 MHz ntawm 2.3 GHz thiab 3.5 GHz spectrum hauv txhua lub nroog Australian lub nroog, tshwj tsis yog Hobart thiab Darwin. Tam sim no nws tab tom siv nws 2.3 GHz spectrum rau nws WiMAX network hauv Perth thiab muab kev pabcuam nrog Huawei USB modem. Nws tau npaj yuav hloov kho nws Wimax network siv TD-LTE thev naus laus zis, qhov twg TD sawv cev rau lub sijhawm sib faib multiplexing. Nws yuav koom tes nrog Huawei hauv kev xa tawm network. Vividwireless khav theeb nws tuaj yeem ua tiav qhov nrawm ntawm 40-70Mbps thiab upload ntawm 4-7Mbps nrog nws cov TD-LTE network.
Telstra lub Telco loj hauv Australia tau tshaj tawm tias lawv tab tom npaj tsim 4G LTE Network tom qab xyoo no. Tus Thawj Coj Tus Thawj Coj ntawm Telstra Mr. David Thodey tshaj tawm ntawm World Mobile Conference 2011 hauv Barcelona tias Telstra npaj yuav hloov kho nws cov G (3G Network) network uas twb muaj lawm nrog Long Term Evolution (LTE) technology. Nws yuav rov muab nws qhov 1800 MHz 2G spetrum rau 4G LTE network, txij li ntau dua 80% ntawm nws cov neeg siv khoom tam sim no nyob rau hauv 3G network. Nws yuav siv tus qauv LTE (Long Term Evolution) thev naus laus zis hauv 4G network uas tseem hu ua FD-LTE, FD sawv cev rau kev faib ntau zaus. Telstra yuav siv cov cuab yeej Ericsson rau kev hloov kho lub network. Telstra cia siab tias yuav ua tiav qhov nrawm ntawm 21Mbps rau rub tawm.
Qhov txawv ntawm FD-LTE thiab TD-LTE
• FD-LTE siv zaus division multiplexing. Nws siv ob txoj kev sib cais los nqa cov ntaub ntawv, ib qho rau upload thiab ib qho rau rub tawm.
• TD-LTE siv sij hawm faib multiplexing, nws siv ib qho channel rau ob txoj kev xa cov ntaub ntawv. Lub bandwidth yog faib nyob ntawm qhov xav tau. Thaum uploading koj tsis tuaj yeem rub tawm thiab rov ua dua.
• FD-LTE thiab TD-LTE siv ntau pawg ntawm wireless spectrum. Telstra yuav siv 1800MHz spectrum thaum Vividwireless yuav siv 2.3 GHz spectrum.
