Video: Qhov txawv ntawm Wcdma thiab LTE yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Tsis zoo li WCDMA , LTE txhawb kev sib txawv bandwidth ntawm 1.25MHz txog 20MHz. Thaum cov ntaub ntawv tus nqi sib piv, LTE muab loj downlink thiab uplink speeds dua WCDMA . Feem ntau, WCDMA yog suav tias yog 3Gtechnology thaum LTE yog suav tias yog 4Gtechnology.
Tom qab ntawd, qhov twg zoo dua CDMA lossis LTE?
LTE (Long Term Evolution) yog ib lub wireless broadbandtechnology rau kev sib txuas lus ntawm cov ntaub ntawv ceev ceev rau cov xov tooj ntawm tes. Qhov txawv ntawm cov technologies yog ob qho tib si. CDMA & GSM tuaj yeem txhawb nqa cellular thiab cov ntaub ntawv, whereas LTE tuaj yeem txhawb nqa cov ntaub ntawv nkaus xwb. Lub GSM xov tooj featured SIM CardSlot, lub CDMA xov tooj tsis tau.
Kuj Paub, LTE Wcdma yog dab tsi? 3G (UMTS) lossis 4G ( LTE ) ua rau koj ua tiav cov ntaub ntawv nrawm dua li thaum siv 2G (GSM). Yog koj xaiv LTE /GSM/ WCDMA (Nws pib txuas), koj lub xov tooj yuav hloov pauv ntawm peb hom kev sib txuas uas tau muab tias koj nyob hauv thaj tsam ntawm 4G network. Yog koj xaiv WCDMA nkaus xwb, koj lub xov tooj tsuas tuaj yeem txuas rau 3Gnetworks.
Tsis tas li ntawd, puas yog Wcdma zoo ib yam li 4g?
WCDMA yog "ib txoj hauv kev xa cov ntaub ntawv inair (Xov tooj cua Access Technology)" thaum 4 G los yog 3G "asystem t of mobile telecommunication". Feem ntau, 3G system siv WCDMA 'Xov tooj cua Access Technology' thaum 4 G siv'OFDMA' Xov tooj cua Access Technology. Rau ib yam yam, 2G sivGERAN Radio Access Technology.
Wcdma network yog dab tsi?
Wideband Code Division Multiple Access ( WCDMA ) yog ib tiam thib peb (3G) tus qauv uas ua haujlwm ncaj qha-sequencecode faib ntau yam nkag (DS-CDMA) channel txoj kev nkag mus thiab qhov zaus-division duplexing (FDD) txoj kev los muab kev pabcuam siab ceev thiab muaj peev xwm.
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