Kev thaj yeeb nyab xeeb rau koj, cov phooj ywg zoo, hnub no peb yuav tham txog
FTTH. Technology
Ua ntej, FTTH yog dab tsi?
Thiab koj puas tau hnov txog FTTH?
Los yog tsev fiber ntau optic thev naus laus zis
Puas yog nws zoo li DSL lossis ze rau plaub tiam 4G
Yog lawm, rau qhov no lossis qhov ntawd, hauv kab tom ntej no peb yuav teb cov lus nug no kom zoo nkauj dua thiab nthuav dav.
FTTH (fiber ntau rau hauv tsev):
Los yog tsev fiber ntau optics yog thev naus laus zis rau xa cov ntaub ntawv thiab cov ntaub ntawv hauv iav xov hlau ntawm qhov nrawm heev sib npaug rau qhov nrawm ntawm lub teeb, txhais tau tias koj tuaj yeem xav txog qhov tsis muaj qhov kawg thiab tsis txwv cov ntaub ntawv thiab cov ntaub ntawv ntws, yooj yim koj tuaj yeem nqa los ntawm cov yeeb yaj kiab thev naus laus zis no khiav cov xuab moos hauv vib nas this thiab koj tuaj yeem rub tawm cov game loj thiab cov haujlwm loj Hauv ob peb feeb, ntxiv rau tso cov ntaub ntawv loj ntawm gigabyte qhov ntau thiab tsawg hauv vib nas this, ua si online yam tsis muaj kev cuam tshuam, koom nrog koj li kev txuas video, thiab saib IPTV hauv Is Taws Nem.
FTTH Optical Fiber:
Qhov zoo tshaj plaws, qhov tseeb tshaj plaws thiab ruaj khov txhais tau tias muaj kev sib txuas lus tam sim no los txuas rau Is Taws Nem, ntxiv rau nws qhov nrawm heev.
Qhov txawv ntawm daim ntawv lo:
FTTN .. Fiber rau ntawm Node.
Viber mus txog rau qhov chaw khaws khoom.
FTTC .. Fiber rau ntawm qhov chaw.
Fiber rau txoj kev taug kev.
FTTB .. Fiber rau lub Tsev.
Viber nce mus rau lub tsev.
FTTH .. Fiber rau Tsev.
Viber nce mus rau lub tsev.
FTTH txhais tau tias cov fiber ntau ncav cuag tus neeg siv lub tsev nyob, thaum FTTB sawv cev rau kev siv fiber ntau tsuas yog mus rau lub tsev thiab tsis yog chav tsev lossis chaw nyob. FTTC thiab FTTN kuj txhais tau tias cov fiber nce mus txog tsawg dua 300 m rau thawj zaug thiab ntau dua 300 m rau qhov thib ob, qhov kev sib txawv no yog, tau kawg, cuam tshuam txog qhov zoo thiab nrawm ntawm kev sib txuas.
Qhov network thiab lawv ua haujlwm li cas:
Cov khoom siv hauv chav faib khoom lossis lub rooj muag zaub yog hu ua:
(OLT: Kev Txiav Txim Siab Kab).
Thiab nws muaj ntau daim npav, txhua daim npav muaj tus lej ntawm cov chaw nres nkoj hu ua:
(PON: Passive Optical Network).
Nws tau txuas nrog rau ib qho kab ntawv kho qhov muag uas xa thiab tau txais ntawm ob qhov sib txawv ntawm qhov ntev. Txog li 64 lub davhlau ya nyob twg tau txais kev pabcuam ntawm txhua qhov chaw nres nkoj los ntawm kev faib cov filament rau hauv filaments los ntawm cov splitter thiab cov filaments txuas nrog ntawm lub davhlau ya nyob twg:
(ONT: Kev Txiav Txim Siab Network).
Download (Download rau Cov Ntaub Ntawv):
Thaum siv GPON raws tu qauv, tag nrho kev sib xyaw ua ke yog 2.488 gigabits ntawm lub nthwv dej ntawm 1490 nm. Txhua yam khoom siv sab nraud tau txais txhua lub cim thiab tsuas yog lees txais cov ntaub ntawv uas tau hais rau lub cuab yeej txais. Qhov siab tshaj plaws txhawb rau ib lub dav hlau ntaus ntawv yog 100Mbps.
Upload rau Cov Ntaub Ntawv:
Ua ke tag nrho nrawm yog 1.244 gigabits siv lub nthwv dej ntawm 1310 nm. Txhua lub davhlau ya nyob twg xa nws cov cim ntawm nws lub sijhawm teem thiab hloov pauv chaw nres nkoj tas li, suav nrog qhov tseem ceeb, qib zoo, kev pom zoo nrawm, thiab qib kev sib tsoo.
Rub tawm (Rub tawm rau Video):
Lub nthwv dej ntawm 1550 nm yog siv rau kev xa video. Qhov siab tshaj plaws txhawb rau ib lub dav hlau ntaus ntawv yog 100Mbps.
Qhov nruab nrab nrawm koj xav tau rau koj lub tsev:
Yog tias koj nug txog qhov tsim nyog FTTH nrawm rau koj lub tsev, qhov nruab nrab nrawm uas lub tsev xav tau yog txog 40 MB, txhawm rau kom tau txais txiaj ntsig los ntawm cov vis dis aus tham, ua si, saib TV siab dua, thiab rub cov ntaub ntawv tas li thiab txuas ntxiv mus.
Cov txheej txheem FTTH:
Nws nyob ntawm cov kev cai xws li:
1- PIB.
2- EPO.
3- PIB.
Thiab qhov tshiab siv yog giga .. GPON
(GPON: Gigabit Passive Optical Network).
Cov ntaub ntawv raug xa mus rau pob ntawv hu ua .. GEM
(GEM: GPON Encapsulation Module).
Qhov zoo ntawm FTTH network thiab nws sib piv nrog tooj liab network DSL:
1- Kev kub ceev.
2- Qhov tseeb thiab kev dawb huv ntawm cov cim.
3- Qhov nrawm tsis txo qis nrog qhov nce ntxiv. Cov neeg siv khoom deb tshaj tuaj yeem tau txais qhov nrawm ib yam li cov neeg siv khoom ze tshaj plaws.
4- Kev siv ntau yam kev pabcuam thiab yooj yim ntawm kev muab rau lawv.
5- Nws lub peev xwm los txhawb nqa cov kev pabcuam yav tom ntej.
6- Muaj peev xwm hloov pauv lub peev xwm thiab tus naj npawb ntawm cov chaw nres nkoj ntawm cov neeg siv khoom los ntawm kev hloov lub cuab yeej.
7- Qhov nrug ntau dua 8 km thiab mus txog 60 km thaum qhov kev ua koob tsheej tsis tau tawg.
Qhov laj thawj rau kev nthuav dav qeeb ntawm FTTH thev naus laus zis:
Qhov qeeb qeeb no yog vim qhov tseeb tias cov cuab yeej siv rau thev naus laus zis no kim heev, ntxiv rau qhov nyuaj ntawm kev tswj hwm thiab teeb tsa cov kho qhov muag fiber yog tias lawv puas. Tab sis qhov teeb meem tseem ceeb yog qhov nyuaj ntawm kev hloov pauv cov txheej txheem uas twb muaj lawm nrog cov txheej txheem tsim nyog rau cov thev naus laus zis no, ntxiv rau qhov tseeb tias cov neeg siv nruab nrab tsis xav tau nrawm. Ob qhov laj thawj no tau ua rau kev sib txuas ib txwm dhau los ntawm cov xov tooj tooj liab txuas ntxiv mus txog niaj hnub no.
Peb xav koj, peb cov neeg muaj txiaj ntsig zoo, nyob zoo thiab noj qab nyob zoo
