4G yog lub thib plaub tiam ntawm broadband mobile technology rau mobile Internet nkag. Txawm hais tias nws tau siv ntau qhov chaw, kev siv 4G ntawm cov xov tooj yog dav dua. Qee lub tuam txhab xws li Qualcomm, Samsung, MediaTek thiab Hisilicon tsim LTE modems rau cov khoom siv txawb. VoLTE tau tsim los siv LTE thev naus laus zis. Txhawb HD lub suab hu thiab txhim kho suab zoo piv rau 2G / 3G hu. Txawm hais tias qhov siab tshaj plaws 4G download ceev tau teev tseg raws li 300 Mbps, nws txawv nyob ntawm LTE pawg siv hauv cov cuab yeej no (CAT).
Dab tsi yog CAT hauv LTE
Thaum koj saib cov cuab yeej kho vajtse ntawm cov khoom siv nrog 4G kev txhawb nqa, LTE pawg tshwm. Muaj 20 pawg LTE sib txawv, tab sis 7 ntawm lawv feem ntau siv. Qhov ceev kuj nce ntxiv thaum koj mus rau cov lej siab dua. Cov lus nrog qee pawg LTE thiab nrawm:
| Pawg LTE | Download ceev tshaj plaws | Upload ceev tshaj plaws |
|---|---|---|
| MIV 3 | 100 Mbps/seconds | 51 Mbps/seconds |
| MIV 4 | 150 Mbps/seconds | 51 Mbps/seconds |
| MIV 6 | 300 Mbps/seconds | 51 Mbps/seconds |
| MIV 9 | 450 Mbps/seconds | 51 Mbps/seconds |
| MIV 10 | 450 Mbps/seconds | 102 Mbps/seconds |
| MIV 12 | 600 Mbps/seconds | 102 Mbps/seconds |
| MIV 15 | 3.9 Gbps / feeb | 1.5 Gbps / feeb |
Modems hauv xov tooj ntawm tes, zoo li processors, tau muab faib ua ntau pawg, nyob ntawm lawv theem ntawm kev loj hlob. Peb tuaj yeem xav txog nws zoo li qhov ua tau zoo sib txawv ntawm Qualcomm Snapdragon 425 processor thiab Qualcomm Snapdragon 860 processor. Txhua SoC muaj cov modem sib txawv. Snapdragon 860 muaj Qualcomm X55 modem thaum Snapdragon 8 Gen 1 muaj Qualcomm X65 modem. Tsis tas li ntawd, txhua lub cuab yeej muaj qhov sib txawv. Combo txhais tau tias muaj pes tsawg tus kav hlau txais xov txuas nrog lub hauv paus chaw nres tsheb. Raws li koj tuaj yeem pom hauv cov lus saum toj no, 4G ceev sib txawv nyob ntawm qeb LTE. Yog tias koj tus neeg nqa khoom txhawb nqa kev kub ceev, koj tuaj yeem pom cov lus cog tseg hauv qeb LTE siab tshaj plaws. Tau kawg, cov kev ceev no xav tias yuav nce ntxiv nrog 5G.
