Telstra 3G vs Next G vs 4G LTE | Tom ntej no G Xov tooj vs 4G LTE Xov tooj | Tom ntej no G Modem vs 4G LTE Modems
Telstra 3G, Tom ntej G thiab 4G yog cov xov tooj sib txuas lus siv hauv Australia los ntawm Telstra. Tom ntej G yog lub npe ntawm Telstra rau nws HSPA Network. Tam sim no Telstra ua haujlwm nrog ob lub 3G tes hauj lwm, uas muaj npe hu ua Telstra 3G thiab Next G thaum lub 4G network yuav tsum tau pib sai sai. Telstra yog thawj tus neeg nqa khoom los tsim kev lag luam sim rau 4G LTE hauv Australia. Telstra 4G LTE network sai dua Tom ntej G lossis 3G, thiab cov neeg siv yuav tau txais kev nkag mus rau Internet ceev heev nrog 4G LTE. Txoj kev xav 4G LTE tuaj yeem hloov pauv LAN kev sib txuas, thiab muab LAN sib npaug cov ntaub ntawv tus nqi hla wireless.
Telstra 3G
Telstra 3G yog 3G network thaum ntxov ntawm Telstra, uas ua haujlwm ntawm 2100MHz. 3G tseem hu ua WCDMA thoob plaws ntiaj teb yog tus qauv European uas tau siv los ua kom tiav 3G specifications luam tawm los ntawm IMT-2000 (International Mobile Telecommunication). 3G siv Code Division Multiple Access (CDMA) thev naus laus zis hauv nws cov huab cua interface.
Telstra Next G
Tom ntej G yog Kev Siv Hluav Taws Xob Hluav Taws Xob (HSPA) Dual Channel Technology enabled network. (Tam sim no upgraded rau HSPA+). Txawm li cas los xij, HSPA siv CDMA thev naus laus zis hauv 3G tes hauj lwm, los ntawm kev siv cov kev hloov pauv tau zoo HSPA tes hauj lwm muaj peev xwm muab tau ntau dua rub tawm thiab xa cov ntaub ntawv tus nqi thaum piv nrog 3G tes hauj lwm ua ntej.
Telstra 4G (LTE)
Telstra 4G siv LTE thev naus laus zis, uas tau pib qhia hauv 3GPP tso tawm 8 thaum Lub Kaum Ob Hlis 2008. LTE siv Orthogonal Frequency Division Multiplexing (OFDM) rau downlink, thiab Single Carrier Frequency Division Multiple Access (SC-FDMA) rau uplink nkag..
Qhov txawv ntawm Telstra 3G thiab Tom ntej G thiab 4G
1. Thaum Telstra 4G network siv LTE (Long Term Evolution) thev naus laus zis, Next G yog High Speed Packet Access (HSPA) Dual Channel Technology enabled network thiab 3G network siv UMTS thev naus laus zis. 3G tes hauj lwm txhawb nqa kev pabcuam xws li kev hu xovtooj video thiab MMS raws li qhov pib 3GPP tso tawm 99 tus qauv. Txhua qhov kev tso tawm tom qab ntawm 3G muaj kev sib raug zoo rov qab, uas ua rau qhov tseeb tias Next G yuav tsum muaj peev xwm txhawb nqa tag nrho cov kev pabcuam 3G.
2. Telstra 3G network khiav ntawm 2100 MHz zaus ntau, thaum Telstra Next G network khiav ntawm 850 MHz zaus ntau, uas ua rau muaj teeb meem ntau dua, teeb liab zoo dua thiab nkag mus. Tom ntej no G siv 1800MHz zaus spectrum ib yam nkaus, nyob ntawm qhov chaw thiab kev pab them nqi.
3. Tom ntej G network txhawb nqa mus txog 20Mbps rub tawm nrawm, thaum Telstra 3G txhawb nqa mus txog 200kbps nruab nrab ceev thiab qhov siab tshaj 3G ceev yuav tsum yog 384kbps hauv ib puag ncig txawb raws li 3GPP Tso Tawm 99 specification. Tom ntej G txhawb nqa mus txog 3Mbps upload ceev, thaum 3G raws li tus qauv 3GPP yuav tsum txhawb nqa txog 384kbps. Raws li 3GPP specification, LTE Qeb 3 cov neeg siv khoom siv yuav tsum txhawb nqa txog 100Mbps hauv downlink thiab 50Mbps hauv uplink. Nws yuav tsum tau muab sau tseg tias saum toj no hais tias qhov siab tshaj plaws ceev yuav txawv nyob ntawm seb yam xws li kev ncua deb ntawm lub hauv paus chaw nres tsheb, lub zos tej yam kev mob, cov neeg siv cov zauv, kho vajtse thiab software configuration thiab download tau qhov chaw.
4. Tom ntej G npog ntau dua 99% ntawm Australian cov pej xeem nrog ntau dua 2.1 lab square kilometer, thaum 3G ua haujlwm ntawm 2100 MHz band npog cov chaw loj hauv nroog. Raws li kev tshaj tawm xov xwm Telstra, 4G kev pab them nqi yuav muaj nyob rau hauv 5km ntawm GPO hauv Melbourne, Brisbane, thiab Sydney, tab sis kev xa tawm yuav npog tag nrho Australia sai sai no.
5. Muaj qee lub xov tooj qub uas txhawb nqa tsuas yog 2100 MHz band, uas yog siv nrog Telstra 3G tes hauj lwm thiab cov khoom siv yuav tsis tuaj yeem siv Next G network vim nws ua haujlwm ntawm 850 MHz band. Feem ntau ntawm cov khoom siv tshiab tshaj plaws txhawb nqa 2100 MHz thiab 800 MHz bands. Cov khoom siv tsawg heev muaj los txhawb 4G thaum piv nrog Next G (HSPA) txhawb nqa.
6. 4G thiab Next G tes hauj lwm yog tus tswv los ntawm Telstra, thaum nws ua ntej 3G (2100MHz) network yog tam sim no koom nrog Vodafone Hutchison Australia (VHA).
7. Telstra 4G network tseem tsis tau muaj kev lag luam, thaum 3G thiab Next G tes hauj lwm thiab cov kev pabcuam tseem muaj kev lag luam. Nws tseem yuav tsum raug sau tseg tias Telstra 3G network yuav raug txiav tawm nyob rau yav tom ntej, thaum ua rau Next G network dav dav hauv Australia.
8. LTE muaj ntau lub tiaj tiaj tiaj tiaj thaum piv nrog 3G thiab HSPA architectures. Tsis tas li ntawd, LTE thiab HSPA txhawb nqa txhua tus IP tes hauj lwm los ntawm qhov kawg mus rau qhov kawg, thaum 3G tsis muaj peev xwm ua tau raws li cov lus qhia thawj zaug.
9. Spectral efficiency yog ntau dua hauv LTE vim OFDM thev naus laus zis thaum piv nrog Next G thiab 3G. Tsis tas li ntawd, HSPA (Next G) spectral efficiency siab dua 3G network vim qhov kev taw qhia ntawm Amplitude Modulation nrog 16-QAM.
10. 3G tes hauj lwm ua raws li 3GPP tso tawm 99 thiab 4. HSPA tes hauj lwm txhawb 3GPP tso tawm 5 thiab 6, thaum LTE txhawb 3GPP tso tawm 7 thiab 8.
