FTTx (Fiber rau x) yog lub kaus lub sij hawm rau ib tsev neeg ntawm fiber ntau -raws li broadband nkag architectures. FTTH (Fiber mus rau Lub Tsev) yog ib qho qauv tshwj xeeb hauv tsev neeg, qhov twg fiber ntau khiav mus rau txhua qhov chaw nyob. Qhov sib txawv tseem ceeb ntawm ob tus qauv FTTx los mus rau qhov twg cov fiber ntau txiav thiab qhov nruab nrab yog lub teeb liab rau qhov kev ncua deb.
Yog tias koj ua haujlwm hauv kev npaj dav dav, kev xa xov tooj, lossis kev tsim network, tej zaum koj tau ntsib FTTx, FTTH, FTTB, FTTC, thiab FTTN siv xoob - qee zaum zoo li lawv txhais tau tib yam. Lawv tsis ua. Kev nkag siab txog qhov twg txhua tus qauv kos cov kab ntawm fiber ntau thiab lwm yam xov xwm yog lub hauv paus rau kev ua kom muaj suab nrov thiab kev txiav txim siab yuav khoom.
Phau ntawv qhia no rhuav tshem FTTx tsev neeg hauv cov ntsiab lus siv tau: dab tsi txhua tus qauv txhais tau tias, lawv piv li cas, tus qauv zoo li casFTTH networkyog tsim, thiab qhov kev xaiv architecture yeej cuam tshuam rau tus nqi, scalability, thiab ntev - lub sij hawm upgrade muaj peev xwm.
FTTx yog dab tsi hauv Telecom?
FTTx sawv cev rau Fiber rau x, qhov "x" sawv cev rau qhov xaus ntawm cov fiber ntau: ib lub tsev, ib lub tsev, ib tug curb -sab txee, ib lub zej zog node, los yog txawm lub wireless antenna. Hauv kev sib txuas lus, FTTx tsis yog ib qho thev naus laus zis. Nws yog ib pawg uas suav nrog txhua qhov kawg - mais architecture qhov twgoptical fiber ntau cablehloov ib co los yog tag nrho cov tsoos tooj liab los yog coaxial txoj kev ntawm tus muab kev pab cuam lub network thiab cov neeg siv kawg.
Qhov ze fiber ntau mus txog rau cov neeg siv khoom, qhov ntau bandwidth thiab ruaj khov qhov kev sib txuas tuaj yeem xa. Lub hauv paus ntsiab lus ntawd ua rau feem ntau ntawm kev lag luam tsiv teb tsaws mus rau kev xa tawm fiber ntau. CovITU-T, uas tsim cov qauv thoob ntiaj teb tom qab PON-raws li kev siv fiber ntau (xws li G.984 GPON thiab G.9807.1 XGS-PON series), tau tsim nws tag nrho cov kev siv kho qhov muag pom kev nyob ib ncig ntawm kev thawb fiber ntau ntxiv rau hauv lub network. CovFiber Broadband Associationtshaj tawm tias FTTH kev xa tawm hauv Tebchaws Meskas tau tshaj 11.8 lab lub tsev dhau los hauv 2025 ib leeg, nrog cov kev pabcuam suav nrog tam sim no tshaj 98 lab lub tsev - qhia meej txog qhov chaw lag luam mus.
FTTx vs FTTH: Qhov txawv tseem ceeb
Txoj kev sib raug zoo yog ncaj nraim: FTTx yog qhov dav; FTTH yog ib tus tswv cuab tshwj xeeb ntawm nws. Txhua FTTH network yog FTTx xa tawm, tab sis tsis yog txhua qhov kev xa tawm FTTx yog FTTH.
Hauv kev xa tawm FTTH, fiber ntau txuas mus rau txhua txoj hauv kev rau tus kheej hauv tsev lossis chav nyob. Tsis muaj tooj liab lossis coaxial ntu nruab nrab ntawm lub network faib thiab cov neeg siv khoom. Qhov no yog cov fiber ntau tshaj -cov qauv siv hauv tsev siv, thiab nws tshem tawm qhov kawg - mais fwj uas txwv tsis pub siv bandwidth, symmetrical kev ua tau zoo, thiab txhim kho kev hloov pauv hauv lwm cov FTTx variants.
Lwm cov qauv FTTx - FTTB, FTTC, FTTN - nres cov fiber ntau ntawm qhov nruab nrab thiab tso siab rau tooj liab, coax, los yog cov cabling uas txuas ntxiv mus txuas ntxiv. Txhua tus qauv sawv cev rau kev lag luam sib txawv-tawm ntawm cov nqi xa tawm, kev tsim kho nyuaj, thiab ntev - lub sijhawm ua haujlwm qab nthab.
Yuav ua li cas txog FTTP?
Ib lo lus hais txog uas feem ntau ua rau tsis meej pem yog FTTP (Fiber rau thaj chaw). Hauv ntau qhov kev lag luam, FTTP yog dav dua FTTH: nws tuaj yeem suav nrog FTTH thiab FTTB, npog txhua qhov kev xa tawm qhov twg fiber ntau mus txog thaj tsam ntawm cov cuab yeej - txawm tias cov cuab yeej ntawd yog ib tsev neeg ib leeg lossis ntau lub tsev - tus neeg xauj tsev. Raws lifeem ntau hais txog FTTx taxonomysau ntawv, FTTP thiab FTTH yog qee zaum siv sib hloov, tab sis lawv tsis yog ib qho kev sib piv. Yog tias koj sau cov lus qhia tshwj xeeb, RFPs, lossis cov ntsiab lus kev, nws tsim nyog ua kom meej txog lub ntsiab lus koj txhais li cas.
Hom FTTx: FTTH, FTTB, FTTC, FTTN, thiab FTTA
FTTH (Fiber rau Tsev)
Fiber terminates ntawm tus neeg siv khoom lub tsev lossis ib tus neeg nyob hauv tsev. IbOptical Network Terminal (ONT).sab hauv lossis ntawm phab ntsa sab nrauv ntawm lub tsev hloov cov teeb liab kho qhov muag rau hauv Ethernet, suab, thiab video outputs. Vim tias tag nrho txoj hauv kev los ntawm lub hauv paus chaw ua haujlwm mus rau hauv tsev yog fiber ntau, FTTH muab qhov siab tshaj plaws muaj bandwidth, qhov qis tshaj plaws latency, thiab txoj kev txhim kho muaj zog tshaj - cov neeg ua haujlwm tuaj yeem ua kom muaj peev xwm los ntawm kev txhim kho cov khoom siv hluav taws xob ntawm qhov kawg yam tsis tau hloov cov nroj tsuag fiber ntau.
FTTH yog tus qauv xaiv rau greenfield vaj tse nyob thiab yog nce ntau nyob rau hauv brownfield hloov khoom dua tshiab uas cov neeg ua hauj lwm txaus siab los nqis peev rau rubFTTH poob cablemus rau txhua chav. Rau ib leeg-tsev neeg nyob ib puag ncig, FTTH feem ntau yog qhov huv tshaj plaws ntev - cov lus teb vim nws zam lub qab nthab ua haujlwm uas tsis yog - fiber ntau ntu kawg qhia.
FTTB (Fiber rau Lub Tsev)
Fiber mus txog lub tsev, feem ntau xaus ntawm chav tsev hauv qab daus los yog riser txee dai khaub ncaws, tab sis tsis txuas rau ib leeg rau txhua chav. Cov ntu kawg hauv lub tsev yog tswj hwm los ntawm Ethernet, coax, lossis cov cabling uas twb muaj lawm. Ib lub tsev - theem ONU (Optical Network Unit) ua haujlwm kho qhov muag - rau - hluav taws xob hloov dua siab tshiab thiab faib cov kev pabcuam rau cov neeg xauj tsev.
FTTB muaj ntau nyob rau hauv cov tsev apartment, cov tsev ua haujlwm, thiab ntau-cov tsev nyob (MDUs). Hauv ntau qhov MDU ib puag ncig, FTTB yog qhov ua tau zoo dua li chav tsev - los ntawm -unit FTTH vim tias tsim kev pom zoo rau kev nkag mus, kev txwv tsis pub siv hluav taws xob sab hauv, thiab kev tsim kho kev lag luam feem ntau ua rau nws ua tsis tau zoo los khiav ib tus neeg fiber ntau poob rau txhua chav tsev. Kev lag luam tawm -tawm yog tias hauv - ntu kev tsim tuaj yeem dhau los ua kev txwv bandwidth raws li cov neeg siv khoom xav tau loj hlob - tshwj xeeb tshaj yog tias cov xov hlau sab hauv yog cov tooj liab qub uas tsis txhawb ntau -gigabit ceev.
FTTC (Fiber rau lub Curb)
Fiber txuas mus rau txoj kev -theem txee los yog qhov chaw faib khoom nyob ze ntawm cov neeg siv khoom. Qhov seem nyob deb - feem ntau yog ob peb puas meters ntawm feem ntau - yog them los ntawm tooj liab (feem ntau txhawb VDSL2 lossis G.fast). FTTC muab qhov kev ua tau zoo tseem ceeb ntawm kev sib txuas ntawm tooj liab ntshiab los ntawm kev ua kom luv ntawm ntu tooj liab, uas ncaj qha txhim kho qhov ua tau zoo thiab cov teeb liab zoo.
Cov neeg ua haujlwm feem ntau siv FTTC raws li lub tswv yim hloov pauv: nws hloov kho cov kev pabcuam sai dua thiab qis dua tus nqi ntawm ib thaj chaw dua li FTTH, tab sis nws khaws cia lub fwj tooj liab uas thaum kawg yuav tsum tau hloov pauv yog tias qhov kev thov tseem nce ntxiv. Hauv kev xyaum, FTTC ua haujlwm zoo tshaj plaws thaum cov tooj liab tseem tshuav luv luv thiab zoo.
FTTN (Fiber rau Node)
Fiber mus txog ib lub tsev nyob ib puag ncig los yog cov node, uas tuaj yeem pab ntau pua tus neeg siv khoom hauv thaj chaw loj dua li ib lub FTTC txee. Lub mais kawg ntawm lub node mus rau txhua qhov chaw feem ntau siv tooj liab lossis coaxial cog uas twb muaj lawm. FTTN muaj nyob rau hauv brownfield ib puag ncig uas tus neeg teb xov tooj xav txhim kho broadband kev ua tau zoo yam tsis muaj nqi thiab cuam tshuam ntawm kev hloov txhua qhov kawg poob.
Qhov kev txwv tseem ceeb yog nyob deb. Qhov ntev ntawm cov tooj liab khiav nruab nrab ntawm lub node thiab lub tsev, qhov ua tau zoo dua qhov ua tau zoo. Rau cov neeg siv khoom nyob deb ntawm lub node, FTTN tuaj yeem xa tsuas yog qhov kev ua tau zoo tshaj qhov qub DSL. Qhov no ua rau FTTN tsis muaj zog ntev dua -lub sijhawm ua si piv rau FTTH lossis txawm tias FTTC - thiab nws yog ib qho laj thawj ntau tus tswv lag luam uas pib siv FTTN txij li thaum pib muaj kev sib sib zog nqus fiber ntau.
FTTA (Fiber rau kav hlau txais xov)
FTTA ua haujlwm rau wireless infrastructure es tsis yog cov neeg siv kawg ncaj qha. Fiber txuas mus rau lub xov tooj ntawm tes, cov kav hlau txais xov xa tawm, lossis lub taub hau xov tooj cua hauv thaj chaw deb, hloov tooj liab -raws li kev sib txuas ntawm fronthaul thiab backhaul.FTTA kabyog lub hom phiaj- tsim rau cov ntawv thov no, feem ntau nrog cov khoom sib txuas thiab sab nraum zoov- cov tsho tiv no. Raws li5G networksnthuav nrog denser me me -kev xa xov ntawm tes, FTTA tau dhau los ua ib feem loj ntawm tag nrho fiber ntau xa tawm - ceeb toom tias FTTx tsis txwv rau thaj chaw dav dav.
FTTH vs FTTB vs FTTC vs FTTN: Sab-los ntawm-Side Comparison
| Qauv | Fiber terminates ntawm | Qhov nruab nrab ntu kawg | Tej yam siv | Kev lag luam tseem ceeb - tawm |
|---|---|---|---|---|
| FTTH | Ib lub tsev lossis chav tsev | Fiber ntau (kawg mus rau qhov kawg) | - tsev neeg ib leeg, hwm broadband | Kev ua tau zoo tshaj plaws thiab txhim kho lub taub hau; siab dua rau -tus nqi tsim kho vaj tse |
| FTTB | Lub tsev nkag los yog riser | Ethernet, coax, lossis tooj liab hauv lub tsev | Apartments, chaw ua haujlwm, MDUs | Kev sib koom ua haujlwm tau zoo; nyob rau hauv - tsim ntu txwv ib -unit bandwidth qab nthab |
| FTTC | Txoj kev - theem txee | Tooj liab (VDSL2, G.fast) | Kev hloov pauv hloov pauv hauv thaj chaw tooj liab uas twb muaj lawm | Tshaj tawm sai dua FTTH; kev ua tau zoo txwv los ntawm qhov seem tooj liab ntev thiab zoo |
| FTTN | Neighborhood node | Tooj los yog coax | Brownfield broadband txhim kho | Tsawg kawg cuam tshuam rau cov nroj tsuag uas twb muaj lawm; tsis muaj zog tshaj qhov ntev -scalability ntawm FTTx cov kev xaiv |
Qhov kev cuam tshuam zoo: txhua qhov tsis yog - fiber ntau qhov kawg yuav dhau los ua qhov kev ua haujlwm tsis zoo. Cov ntu ntawd txwv qhov siab tshaj plaws bandwidth, txwv tsis pub muaj peev xwm rub tawm / rub tawm, nthuav qhia ntau cov ntsiab lus ntawm qhov tsis ua tiav, thiab caps txoj kev txhim kho. Thaum tus neeg teb xov tooj tom qab xav txhawb 10G symmetrical kev pabcuam lossis qis - daim ntawv thov latency, tooj liab lossis coax tail yuav tsum tau hloov pauv - uas txhais tau tias rov tsim dua lub mais kawg.
Yuav ua li cas ib qho FTTH Network Ua Haujlwm: Cov Cheebtsam thiab Cov Teeb Pom Kev
Ib qho FTTH network ib txwm muaj peb cov txheej txheem ua haujlwm. Kev nkag siab txog lawv yuav pab tau thaum ntsuas kev xaiv khoom siv,FTTx architecturekev xaiv, los yog tus neeg muag khoom proposals.
OLT (Optical Line Terminal)
OLT nyob rau hauv lub chaw muab kev pab cuam lub hauv paus chaw ua hauj lwm los yog headend. Nws yog lub network-sab xaus uas sib sau ua ke cov neeg siv khoom sib txuas thiab txuas cov fiber ntau nkag mus rau tus neeg muab kev pabcuam tus tub ntxhais IP lossis lub network thauj khoom. Hauv kev xa tawm PON, ib qho chaw nres nkoj OLT tuaj yeem ua haujlwm rau ntau tus neeg siv khoom los ntawm kev sib cais tsis sib haum - uas yog qhov laj thawj tseem ceebPON-raws li FTTxyog tus nqi -zoo ntawm qhov ntsuas.
ODN (Optical Distribution Network)
CovODNyog txhua yam ntawm OLT thiab ONT: feeder fiber, tis fiber ntau, nco cables, splice kaw, thiab - hauv PON architectures - passive optical splitters. ODN tsis muaj cov cuab yeej siv hluav taws xob, uas txhais tau tias tus nqi kho qis dua thiab muaj kev ntseeg siab dua piv rau cov khoom siv hluav taws xob. Splitter feem ntau yog nyob ntawm 1:32 txog 1:128, nyob ntawm tus qauv PON thiab tus neeg teb xov tooj tus qauv tsim.
ONT (Optical Network Terminal)
ONT yog tus neeg siv khoom siv - sab ntaus ntawv uas txiav cov fiber ntau thiab hloov cov teeb liab kho qhov muag rau hauv kev siv tau - feem ntau Ethernet ports rau cov ntaub ntawv, thiab hauv qee qhov kev teeb tsa, chaw nres nkoj rau lub suab lossis RF video overlay. Hauv thaj chaw FTTH, ONT feem ntau yog nruab rau hauv tsev lossis hauv ib qho chaw sab nraud ntawm lub tsev sab nrauv.
Txoj kev teeb liab hauv FTTH network ua raws li cov saw no: lub hauv paus chaw ua haujlwm → OLT → feeder fiber → splitter (s) → faib fiber ntau →poob kab→ ONT → cov neeg siv khoom siv.
FTTH Architecture: PON vs Active Ethernet thiab Split Topologies
Kev xaiv ntawm cov kev xaiv architecture yog qhov kev npaj xa tawm tau txais txiaj ntsig. Ob qhov kev txiav txim siab tseem ceeb tshaj plaws: kev thauj khoom siv tshuab (PON lossis Active Ethernet) thiab kev sib cais topology (tsev khiav, nruab nrab, lossis faib).
PON vs Active Ethernet hauv FTTH Networks
Feem ntau FTTH xa tawm hnub no siv qee hom PON (Passive Optical Network). Hauv PON architecture, passive splitters hauv ODN faib cov teeb liab kho qhov muag kom ib qho chaw nres nkoj OLT ua haujlwm rau ntau tus neeg siv khoom yam tsis muaj cov khoom siv hluav taws xob hauv thaj teb. Cov qauv tseem ceeb yogGPON(ITU-T G.984, muab 2.5 Gbps downstream / 1.25 Gbps upstream) thiab XGS-PON (ITU-T G.9807.1, muab symmetrical 10 Gbps). ITU-T's tom ntej- qauv qauv,50G-PON (G.9804), thawb lub peev xwm mus rau 50 Gbps ib lub wavelength thiab yog tsim los sib koom ua ke ntawm tib lub fiber ntau cog li GPON thiab XGS-PON - lub ntsiab lus cov tswv lag luam tuaj yeem hloov kho yam tsis hloov lawv ODN.
Active Ethernet (tseem hu ua Point-rau-Point Ethernet lossis P2P) siv cov khoom siv fiber ntau lossis cov khoom siv hloov pauv kom ua rau txhua tus neeg siv khoom sib txuas ncaj qha rov qab mus rau lub taub hau. Qhov no muab kev mob siab rau bandwidth rau ib tus neeg siv khoom thiab ua kom yooj yim rau kev sib cais ntawm kev khiav tsheb, tab sis nws yuav tsum muaj fiber ntau lossis ntau cov khoom siv hauv thaj chaw, uas ua rau CAPEX thiab OPEX nce ntxiv. Active Ethernet nyiam tshwm sim hauv kev lag luam- kev xa tawm los yog hauv cov tes hauj lwm uas tus neeg teb xov tooj muab qhov tseem ceeb rau SLAs tshaj kev sib koom- cov nqi tsim kho vaj tse.
Rau feem ntau cov tsev nyob thiab sib xyaw- siv FTTH tsim, PON yeej ntawm kev lag luam. Active Ethernet ua rau muaj kev nkag siab ntau dua thaum kev xa mus ua haujlwm feem ntau cov neeg siv khoom lag luam nrog kev ruaj ntseg uptime thiab bandwidth lav, lossis thaum cov neeg siv khoom ceev tsawg dhau los ua pov thawj cov qauv kev sib koom ntawm PON.
Tsev Khiav Architecture
Hauv kev khiav hauv tsev (los yog taw tes- rau- taw tes) topology, txhua tus neeg siv khoom muaj txoj hauv kev los ntawm cov chaw ua haujlwm hauv nruab nrab mus rau qhov chaw - tsis muaj kev sib cais, tsis muaj kev sib koom. Qhov no muab qhov siab tshaj plaws bandwidth rau ib tus neeg siv khoom thiab qhov yooj yim tshaj plaws kev cais tawm: kev tawg fiber ntau cuam tshuam rau ib tus neeg siv khoom nkaus xwb. Kev lag luam tawm -tawm yog qhov tseem ceeb: kev tsim qauv hauv tsev yuav tsum muaj fiber ntau, qhov loj tshaj plaws ntawm cable, thiab kev sib txuas ntau tshaj plaws. Lawv kuj xav tau OLT cov chaw nres nkoj ntau dua, vim tias tsis muaj kev sib cais ua ntu zus los faib cov peev txheej chaw nres nkoj. Kev khiav hauv tsev yog qhov ua tau zoo tshaj plaws nyob rau hauv qis - kev xa tawm ceev lossis cov xwm txheej uas xav tau kev xav tau bandwidth yav tom ntej yuav siab heev.
Centralized Split Architecture
Lub hauv paus kev sib cais tsim qhov chaw ib qho chaw sib cais - feem ntau ntawm lossis ze ntawm qhov chaw ua haujlwm hauv nruab nrab lossis ntawm lub chaw faib khoom fiber ntau - thiab khiav ib tus neeg fibers los ntawm lub splitter rau txhua tus neeg siv khoom. Qhov no yog qhov ntau tshaj plaws architecture nyob rau hauv ntom suburban thiab nroog FTTH tsim. Nws ua kom yooj yim rau kev tswj hwm splitter, ua rau kev daws teeb meem yooj yim dua (vim tias txhua qhov sib cais tshwm sim ntawm ib qho chaw paub), thiab ua rau cov khoom noj fiber ntau suav tsawg. Qhov kev txwv tseem ceeb yog tias kev faib khoom fiber ntau tuaj yeem ua haujlwm ntev, uas ua rau cov khoom siv nce nqi hauv kev sib kis - tawm thaj chaw.
Distributed Split Architecture
Hauv kev faib cov qauv tsim, kev sib cais tshwm sim ntawm ob lossis ntau theem - piv txwv li, thawj zaug - theem sib cais ntawm lub txee thiab qhov thib ob - theem sib cais ze dua rau cov neeg siv khoom. Qhov no txo qis tag nrho cov fiber ntau suav rau hauv feem ntawm lub network thiab tuaj yeem txo cov nqi tsim kho hauv qee thaj chaw. Txawm li cas los xij, kev faib cais qhia ntau yam khoom hauv ODN, ua rau muaj tus lej ntawm cov splice thiab cov ntsiab lus sib txuas, thiab tuaj yeem ua txhaum qhov chaw hauv cheeb tsam ntau dua. Cov neeg ua haujlwm uas xaiv cov kev faib cais cov qauv tsim nyog yuav tsum ntsuas qhov nyiaj txuag fiber ntau tiv thaiv kev ua haujlwm nyuaj ntxiv hauv lub neej ntawm lub network.
Xaiv Txoj Cai Architecture
Kev xaiv Architecture nyob ntawm ntau yam tseem ceeb es tsis yog ib lo lus "zoo tshaj":
- Subscriber ceev:Qhov ceev dua nyiam PON nrog centralized splitting. Kev ceev qis dua tuaj yeem ua pov thawj rau kev khiav hauv tsev lossis Active Ethernet.
- CAPEX txwv:PON nrog centralized los yog faib faib minimizes upfront fiber thiab khoom nqi. Kev khiav hauv tsev muaj kev nqis peev ntau dua.
- Txhim kho txoj kev:Txhua PON architectures tsim los ntawm tus qauv ODN infrastructure tuaj yeem txav los ntawm GPON mus rau XGS-PON rau 50G-PON los ntawm kev sib pauv OLT daim npav thiab ONTs - yam tsis tau kov cov nroj tsuag fiber ntau. Kev khiav hauv tsev muab lub taub hau feem ntau rau ib tus neeg siv khoom.
- Kev ua haujlwm complexity:Centralized split yog qhov yooj yim tshaj los daws teeb meem. Distributed faib ntxiv cov teb Cheebtsam. Kev khiav hauv tsev muaj qhov yooj yim tshaj plaws rau - kev cais tus neeg ua haujlwm txhaum cai tab sis muaj fiber ntau los tswj.
- Lub hom phiaj kev pabcuam sib xyaw:Cov chaw nyob broadband ntau dhau nyiam PON. Enterprise-qib SLAs rau siab ua haujlwm yuav nyiam siv Ethernet lossis khiav hauv tsev.
Yuav Ua Li Cas Xaiv Txoj Cai FTTx Tus Qauv rau Koj Kev Xa Khoom
Tus qauv FTTx txoj cai nyob ntawm qhov chaw xa khoom tshwj xeeb, tsis yog tus qauv zoo tshaj plaws hauv kev paub daws teeb meem. Nov yog qhov kev txiav txim siab qhov ntev uas tseem ceeb tshaj plaws hauv kev npaj network tiag tiag:
Greenfield vs Brownfield.Hauv greenfield tsim tsis muaj cov txheej txheem uas twb muaj lawm, FTTH yuav luag txhua qhov kev xaiv yog. Tus nqi nce ntxiv ntawm kev khiav fiber ntau rau txhua lub tsev - es tsis yog nres ntawm lub txee lossis lub tsev - yog qhov me me thaum koj twb tau trenching lossis stringing tshiab cable. Nyob rau hauv ib puag ncig brownfield nrog cov cog tooj liab lossis coax uas twb muaj lawm, cov lej suav txawv: FTTC lossis FTTN tuaj yeem xa cov txiaj ntsig kev txhim kho sai dua thiab qis dua tus nqi, yuav lub sijhawm thaum tus neeg teb xov tooj npaj tag nrho FTTH overbuild.
Ib leeg-tsev neeg vs ntau- tsev nyob.Rau ib leeg- tsev neeg nyob ib puag ncig, FTTH yog tus qauv coj ua. Rau MDUs, FTTB feem ntau muaj tseeb dua vim nws zam qhov kev xav tau los sib tham txog kev nkag mus rau ib tus neeg, khiav fiber ntau los ntawm txoj hauv kev hauv - txoj hauv kev, thiab nruab ONTs hauv txhua chav tsev. Txawm li cas los xij, cov neeg ua haujlwm tsim MDUs tshiab lossis ua kev kho kom zoo dua qub ntxiv xaiv chav tsev -theem FTTH vim tias qhov ntev - lub sij hawm bandwidth qab nthab ntawm FTTB nyob ntawm qhov zoo ntawm - lub tsev thaiv kab.
Txhim kho ncua sij hawm.Yog tias lub network xav tau kev txhawb nqa 1G hnub no thiab 10G lossis siab dua nyob rau tsib mus rau kaum xyoo tom ntej, FTTH nrog PON architecture muab txoj hauv kev txhim kho smoothest. FTTC thiab FTTN yuav ua rau nyuaj bandwidth ceilings raws li cov neeg thov kev thov loj hlob, yuav tsum muaj fiber ntau txuas ntxiv mus rau qhov chaw twg los xij.
Kev siv nyiaj thiab kev xa tawm ceev.FTTN thiab FTTC tuaj yeem siv tau sai dua thiab qis dua ntawm - thaj chaw tus nqi tshaj FTTH, uas yog qhov tseem ceeb thaum lub hom phiaj yog kom ncav cuag ntau tus neeg siv khoom raws li qhov ua tau nyob rau hauv cov peev nyiaj ruaj khov lossis ncua sij hawm - piv txwv li, hauv tsoomfwv - pab nyiaj rau cov kev pab cuam nyob deb nroog. Kev lag luam tawm - tawm yog tias cov qauv no suav nrog cov nuj nqis uas yuav tsum tau hais tom qab.
Yog xav paub ntxiv txog yuav ua li cas cov qauv no siv tiag tiagFTTH project deployments, tus neeg teb xov tooj cov ntaub ntawv tshawb fawb thiab kev daws teeb meem architectures muab cov ntsiab lus siv tau zoo.
Feem ntau yuam kev thaum tham FTTx thiab FTTH
Siv FTTx thiab FTTH sib hloov.FTTx yog tsev neeg; FTTH yog ib tug tswv cuab. Conflating lawv tsim kev tsis meej pem nyob rau hauv cov ntaub ntawv technical, RFPs, thiab cov ntaub ntawv tswj hwm - tshwj xeeb tshaj yog thaum qhov sib txawv ntawm "fiber rau lub tsev" thiab "fiber rau lub tsev" los yog "fiber rau lub node" muaj qhov cuam tshuam tiag tiag rau theem kev pabcuam thiab cov neeg siv khoom.
Piv txwv tias FTTP ib txwm txhais tau tias FTTH.Hauv ntau lub ntsiab lus, FTTP yog dav dua thiab suav nrog FTTB. Yog tias tus neeg muag khoom lossis tus neeg teb xov tooj piav qhia lawv lub network li "FTTP," nws tsim nyog paub meej tias fiber ntau mus txog txhua chav tsev lossis nres ntawm lub tsev.
Kho 5G raws li kev hloov pauv fiber ntau.5G thiab fiber ntau yog sib ntxiv, tsis muaj kev sib tw . 5G hauv paus chaw nres tsheb - tshwj xeeb tshaj yog qhov ntom ntom me me - xovtooj xa tawm uas xa cov ceev tshaj plaws - xav tau fiber ntau backhaul thiab fronthaul ua haujlwm. Txhua qhov kev nthuav dav 5G ua tau zoo tsav ntau dua kev xa tawm fiber ntau los ntawmFTTAthiab lwm yam infrastructure. CovBroadband Forum'kev ua haujlwm ntawm PON-raws li mobile backhaul (TR-331) ua rau qhov kev sib raug zoo no qhia meej: PON infrastructure pabcuam ob qho tib si broadband cov neeg siv khoom thiab cov chaw nres tsheb hauv xov tooj ntawm tib lub fiber ntau cog.
Tsis quav ntsej architecture thaum sib piv FTTx qauv.Ob lub network tuaj yeem sau npe "FTTH" tab sis ua tau txawv heev nyob ntawm seb lawv puas siv GPON lossis Active Ethernet, nruab nrab lossis faib faib, thiab qhov sib faib li cas lawv ua haujlwm. Daim ntawv lo FTTx qhia koj qhov twg fiber ntau xaus; lub architecture qhia koj li cas lub network ua tau tiag tiag.
FAQ
Q: Puas yog FTTH zoo ib yam li FTTx?
A: Tsis yog. FTTx yog lub kaus rau tag nrho cov fiber ntau -rau - tus -x cov qauv siv. FTTH yog ib qho qauv tshwj xeeb hauv tsev neeg ntawd - qhov twg fiber ntau mus txog rau tus neeg lub tsev. Lwm cov qauv FTTx suav nrog FTTB (lub tsev), FTTC (curb), thiab FTTN (node).
Q: Puas yog FTTP tib yam li FTTH?
A: Tsis tas li. FTTP (Fiber mus rau qhov chaw) feem ntau yog siv los ua ib lub ntsiab lus dav uas suav nrog FTTH thiab FTTB. Qee tus neeg ua haujlwm thiab cov qauv siv lub cev siv FTTP thiab FTTH sib hloov, tab sis hauv kev siv nruj, FTTP tuaj yeem xa mus rau txhua qhov kev xa tawm qhov twg fiber ntau mus txog thaj tsam ntawm cov cuab yeej - suav nrog cov tsev uas cov khoom siv sab hauv siv tsis yog - fiber ntau xov xwm.
Q: Qhov twg Zoo dua: FTTH lossis FTTN?
A: FTTH muab ntau dua bandwidth, qis latency, symmetrical upload/download muaj peev xwm, thiab muaj zog dua - lub sij hawm upgrade txoj kev. FTTN tsis tshua muaj nqi rau kev xa tawm thawj zaug vim tias nws rov siv cov cog tooj liab uas twb muaj lawm rau mais kawg, tab sis ntu tooj liab txwv kev ua tiav tau nrawm - tshwj xeeb tshaj yog rau cov neeg nyob deb ntawm lub pob. Rau ib lub network uas npaj los txhawb ntau -gigabit cov kev pabcuam hauv kaum xyoo tom ntej, FTTH yog qhov kev xaiv muaj zog dua.
Q: Cov cuab yeej siv dab tsi hauv FTTH Network?
A: Peb lub hauv paus tseem ceeb yog OLT (Optical Line Terminal) ntawm cov chaw muab kev pabcuam, ODN (Optical Distribution Network) nyob nruab nrab ntawm - uas suav nrog fiber ntau optic cables, splitters, splice kaw, thiab connectors - thiab ONT (Optical Network Terminal) ntawm tus neeg siv khoom sab. Cov khoom ntxiv muaj xws li sab hauv tsev FTTx cables, patch cords, thiab tis thav ntawv.
Q: Puas yog FTTH Ib txwm Raws Li PON?
A: Tsis yog. Txawm hais tias feem ntau ntawm cov chaw nyob FTTH xa tawm thoob ntiaj teb siv PON thev naus laus zis (feem ntau GPON lossis XGS-PON), FTTH kuj tuaj yeem tsim tau siv Active Ethernet nrog rau qhov taw tes tshwj xeeb - rau - taw tes fiber ntau txuas. Qhov kev xaiv ntawm PON thiab Active Ethernet nyob ntawm qhov ceev ntawm cov neeg siv khoom, cov kev xav tau kev pabcuam, thiab tus qauv nqi - tsis nyob ntawm FTTx qauv nws tus kheej.
Q: Puas yog FTTB suav tias yog Fiber Ntau?
A: Nws nyob ntawm qhov txhais. FTTB xa cov fiber ntau rau lub tsev, tab sis kev sib txuas los ntawm lub tsev qhov chaw faib khoom rau txhua chav tsev feem ntau siv tooj liab lossis Ethernet cabling. Feem ntau lub koom haum kev lag luam thiab cov tswj hwm tsis faib FTTB li "tag nrho fiber ntau" lossis "tag nrho fiber ntau" vim tias cov neeg siv khoom sib txuas tiag tiag suav nrog qhov tsis yog - fiber ntau. Yog tias lub network lees tias yog "tag nrho fiber ntau," nws yuav tsum txhais tau tias fiber ntau ncav cuag tus kheej lub tsev - uas yog FTTH.
Xaus
FTTx piav qhia txog cov spectrum ntawm fiber ntau nkag architectures, los ntawm FTTN ntawm qhov ntiav kawg mus rau FTTH ntawm qhov tob tshaj plaws. Qhov kev xaiv yog nyob ntawm qhov chaw xa tawm, pob nyiaj siv, ncua sij hawm, thiab ntev - lub hom phiaj kev pabcuam. Rau cov neeg ua haujlwm tsim cov tes hauj lwm uas xav tau kev txhawb nqa 10G thiab dhau mus, FTTH nrog aPON-raws li architecturemuab tus nqi ntau tshaj -kev sib xyaw ua ke ntawm kev ua tau zoo, kev ua kom muaj zog, thiab hloov kho kom yooj yim. Rau qhov kev hloov pauv lossis kev txwv ib puag ncig, FTTB, FTTC, thiab FTTN ua haujlwm raws li cov kauj ruam tseem ceeb - nrog kev nkag siab tias qhov tsis yog - fiber ntau ntu kawg yuav tsum tau hais txog.
Cov lus siv tau yooj yim dua thaum koj tsom rau ib lo lus nug: qhov twg fiber ntau xaus? Txhua yam ntxiv - kev ua tau zoo, tus nqi, txoj kev txhim kho, kev ua haujlwm nyuaj - raws li cov lus teb ntawd.