Raws li lub cim tshiab ntawm kev siv tshuab fiber ntau optical, XPON muaj qhov zoo ntawm kev tiv thaiv kev cuam tshuam, bandwidth yam ntxwv, kev nkag mus deb, kev saib xyuas thiab kev tswj hwm, thiab lwm yam. Nws daim ntawv thov tau nyiam cov neeg ua haujlwm thoob ntiaj teb.XPON kho qhov muag siv tshuab yog tus paub tab EPON thiab GPON yog ob qho tib si tsim los ntawm chaw ua haujlwm hauv nruab nrab OLT, cov neeg siv-sab ONU cov cuab yeej thiab passive optical faib network ODN.Ntawm lawv, ODN network thiab cov cuab yeej siv yog ib feem tseem ceeb ntawm XPON kev sib koom ua ke, koom nrog kev tsim thiab kev siv lub network tshiab optical fiber.Cov khoom siv ODN cuam tshuam thiab cov nqi sib txuas tau dhau los ua qhov tseem ceeb txwv rau kev siv XPON.
Tswv yim
Tam sim no, kev lag luam feem ntau zoo siab xPON thev naus laus zis suav nrog EPON thiab GPON.
GPON (Gigabit-CapablePON) thev naus laus zis yog lub cim tshiab ntawm broadband passive optical integrated access standard raws li tus qauv ITU-TG.984.x.Nws muaj ntau yam zoo xws li high bandwidth, high efficiency, loj kev pab cuam, thiab nplua nuj neeg siv interfaces.Cov neeg ua haujlwm suav tias nws yog ib qho cuab yeej zoo tshaj plaws kom paub txog broadband thiab kev hloov pauv ntawm kev siv cov kev pabcuam hauv network.Qhov siab tshaj plaws downstream tus nqi ntawm GPON yog 2.5Gbps, cov upstream kab yog 1.25Gbps, thiab qhov siab tshaj plaws splitting piv yog 1:64.
EPON yog ib hom kev siv tshuab dav dav, uas paub txog cov kev pabcuam kev sib koom ua ke ntawm cov ntaub ntawv, suab thiab yees duab los ntawm ib qho kev siv fiber ntau optical, thiab muaj kev lag luam zoo.EPON yuav dhau los ua lub ntsiab lus dav dav siv thev naus laus zis.Vim yog cov yam ntxwv ntawm EPON network qauv, qhov tshwj xeeb zoo ntawm broadband nkag mus rau hauv lub tsev, thiab lub ntuj organic ua ke nrog computer networks, cov kws txawj thoob plaws lub ntiaj teb no pom zoo tias passive optical tes hauj lwm yog lub realization ntawm "peb tes hauj lwm nyob rau hauv ib" thiab kev daws teeb meem rau cov ntaub ntawv loj.Qhov nruab nrab kis tau zoo tshaj plaws rau " mais kawg".
Cov tiam tom ntej PON network system xPON:
Txawm hais tias EPON thiab GPON muaj lawv tus kheej cov thev naus laus zis sib txawv, lawv muaj tib lub network topology thiab cov qauv kev tswj hwm network zoo sib xws.Lawv yog ob qho tib si taw qhia rau tib daim ntawv thov kev siv kho qhov muag thiab tsis yog kev sib koom ua ke.Cov tiam tom ntej PON network system xPON tuaj yeem txhawb nqa tib lub sijhawm.Ob tus qauv no, uas yog, cov khoom siv xPON tuaj yeem muab cov ntaub ntawv sib txawv ntawm PON nkag mus raws li qhov sib txawv ntawm cov neeg siv, thiab daws qhov teeb meem ntawm kev tsis sib haum xeeb ntawm ob lub thev naus laus zis.Tib lub sijhawm, xPON system muab kev sib koom ua ke kev tswj hwm kev sib koom ua ke uas tuaj yeem tswj hwm ntau yam kev xav tau ntawm kev lag luam, paub txog kev pabcuam puv ntoob (xws li ATM, Ethernet, TDM) kev txhawb nqa muaj peev xwm nrog QoS lav nruj, thiab txhawb nqa downstream cable TV kis tau los ntawm WDM;Nyob rau tib lub sijhawm, nws tuaj yeem txheeb xyuas EPON, GPON Access card ntxiv thiab rho tawm;Nws yog qhov sib xws nrog EPON thiab GPON tes hauj lwm tib lub sijhawm.Rau cov thawj coj hauv network, txhua qhov kev tswj hwm thiab kev teeb tsa yog rau kev lag luam, tsis hais txog qhov sib txawv ntawm EPON thiab GPON.Qhov ntawd yog hais tias, kev siv ntawm EPON thiab GPON yog pob tshab rau kev tswj hwm network, thiab qhov sib txawv ntawm ob yog thaiv thiab muab rau cov txheej txheem sib koom ua ke.Ib lub koom haum tswj hwm kev sib koom ua ke yog ib qho txiaj ntsig zoo tshaj plaws ntawm cov kab ke no, uas paub txog kev sib koom ua ke ntawm ob qhov sib txawv PON thev naus laus zis ntawm qib kev tswj hwm network.
Main parameters thiab technical indicators
Cov tsis tseem ceeb ntawm xPON network yog raws li nram no:
● Muaj peev xwm txhawb nqa kev pabcuam ntau yam: kom ua tiav kev pabcuam puv ntoob (xws li ATM, Ethernet, TDM) txhawb nqa peev txheej nrog QoS lav nruj, rau kev ua lag luam kom zoo, txhawb nqa downlink cable TV kis tau los ntawm WDM;
● Tsis siv neeg txheeb xyuas thiab tswj ntawm EPON thiab GPON daim npav nkag;
● Txhawb nqa 1:32 ceg muaj peev xwm;
● Qhov kev ncua deb tsis ntau tshaj 20 kilometers;
● Upstream thiab downstream symmetric kab tus nqi 1.244Gbit / s.Txhawb nqa chaw nres tsheb kev txheeb cais muaj nuj nqi;
● Txhawb nqa dynamic thiab zoo li qub bandwidth faib ua haujlwm.
● Txhawb multicast thiab multicast muaj nuj nqi
Cov kev qhia tseem ceeb ntawm xPON network:
(1) Lub peev xwm muaj peev xwm: Lub kaw lus muaj lub peev xwm loj IP hloov cov tub ntxhais (30G) los muab 10G Ethernet network interface, thiab txhua OLT tuaj yeem txhawb nqa 36 PON tes hauj lwm.
(2) Multi-service interface: Txhawb TDM, ATM, Ethernet, CATV, thiab muab QoS lav nruj, uas tuaj yeem suav nrog cov kev pabcuam uas twb muaj lawm.Nws yeej txhawb kev txhim kho du ntawm kev lag luam.
(3) Kev ntseeg siab thiab muaj nyob hauv System: Lub kaw lus muab kev xaiv 1 + 1 kev tiv thaiv kev hloov pauv tshuab kom ua tau raws li cov kev xav tau ntawm kev sib txuas lus hauv network rau kev ntseeg siab, thiab lub sijhawm hloov pauv tsawg dua 50ms.
(4) Network ntau yam: configurable 10,20Km network txoj kev, ua tau raws li qhov yuav tsum tau muaj ntawm kev nkag network.
(5) Unified system tswj software platform: Rau kev nkag mus sib txawv, muaj kev sib koom ua ke kev tswj hwm lub platform
Qauv
Passive optical fiber network system yog optical fiber broadband kis tau tus mob muaj li ntawm optical kab davhlau ya nyob twg (OLT), kho qhov muag faib network (ODN), thiab kho qhov muag network unit (ONU), hu ua PON system.Tus qauv siv PON system yog qhia hauv daim duab 1.
Lub PON system txais ib qho point-to-multipoint network qauv, siv passive optical tis network raws li kev sib kis nruab nrab, siv hom kev tshaj tawm hauv kev sib txuas, thiab TDM ua haujlwm hom hauv uplink, uas paub txog ib leeg-fiber bidirectional teeb liab kis tau tus mob.Piv nrog rau cov kev siv ib txwm siv network, PON system tuaj yeem txo qhov kev siv ntawm kev nkag mus rau hauv chav tsev computer thiab nkag mus rau cov khoom siv kho qhov muag, ua kom cov kev pab cuam hauv lub network ntawm qhov nkag, nce tus nqi nkag, txo qhov tsis ua hauj lwm ntawm cov kab thiab cov khoom siv sab nraud, thiab txhim kho kev ntseeg tau ntawm qhov system.Nyob rau tib lub sijhawm, nws tseem txuag cov nqi txij nkawm, yog li PON system yog lub ntsiab lus siv thev naus laus zis ntawm NGB ob txoj kev nkag network.
Raws li qhov sib txawv ntawm cov teeb liab sib kis ntawm lub cev, nws tuaj yeem raug xa mus rau xPON, xws li APON, BPON, EPON, GPON thiab WDM-PON.GPON thiab EPON tau siv dav thoob ntiaj teb, thiab tseem muaj cov ntawv thov loj hauv kev hloov pauv ntawm xov tooj cua thiab TV ob txoj hauv kev.WDM-PON yog ib qho system uas siv cov kev ywj pheej wavelength raws ntawm OLT thiab ONU los ua ib qho kev sib txuas ntawm taw tes rau-taw tes.Piv nrog TDM- xws li EPON thiab GPON, PON thiab WDM-PON muaj qhov zoo ntawm cov bandwidth siab, raws tu qauv transparency, kev nyab xeeb thiab kev ntseeg tau, thiab muaj zog scalability.Lawv yog cov kev txhim kho yav tom ntej.Nyob rau hauv lub sij hawm luv luv, vim yog cov ntsiab lus nyuaj ntawm WDM-PON, cov khoom siv ntau dua, thiab cov nqi siab, nws tseem tsis tau muaj cov xwm txheej rau cov ntawv thov loj.
Lub ntsiab kev qhia ntawm xPON
①System muaj peev xwm: Lub kaw lus muaj lub peev xwm loj IP hloov cov tub ntxhais (30G), muab 10G Ethernet network interface, thiab txhua OLT tuaj yeem txhawb nqa 36 PONs;
②Multi-service interface: txhawb TDM, ATM, Ethernet, CATV, thiab muab kev lav QoS nruj, tuaj yeem nqus tag nrho cov lag luam uas twb muaj lawm, thiab txhawb nqa kev txhim kho du ntawm kev lag luam;
③ System muaj kev ntseeg siab thiab muaj nyob: Lub kaw lus muab kev xaiv 1 + 1 kev tiv thaiv kev hloov tshuab kom ua tau raws li cov kev xav tau ntawm kev sib txuas lus hauv network rau kev ntseeg siab, thiab lub sijhawm hloov pauv tsawg dua 50m;
④Network ntau yam: 10-20km network txoj kab uas hla tuaj yeem teeb tsa kom ua tau raws li qhov xav tau ntawm kev nkag mus network;
⑤Unified system tswj software platform: Rau ntau txoj kev nkag, nws muaj kev sib koom ua ke kev tswj hwm network.
HUANET tsim ntau cov qauv ntawm xPON ONU, xPON ONT, suav nrog 1GE xPON ONU, 1GE + 1FE + CATV + WIFI xPON ONT, 1GE + 1FE + CATV + POTS + WIFI xPON ONU, 1GE + 3FE + POTS + WIFI xPON ONT.Peb kuj muab Huawei xPON ONT.
Post lub sij hawm: Jun-24-2021