Cov xwm txheej ntawm daim ntawv thov OTN

OTN thiab PTN
Yuav tsum tau hais tias OTN thiab PTN yog ob lub thev naus laus zis sib txawv kiag li, thiab kev hais lus, yuav tsum tau hais tias tsis muaj kev sib txuas.
OTN yog ib lub network thauj khoom siv optical, uas tau hloov zuj zus los ntawm cov thev naus laus zis faib wavelength ib txwm muaj. Nws feem ntau ntxiv cov haujlwm hloov kho optical ntse. Nws tuaj yeem ua tiav optical crossover los ntawm kev teeb tsa cov ntaub ntawv yam tsis muaj cov jumpers fiber ntau. Kev saib xyuas thiab kev ywj pheej ntawm kev sib txuas lus ntawm WDM cov khoom siv tau zoo heev. Tib lub sijhawm, lub network OTN tshiab maj mam hloov zuj zus mus rau bandwidth loj dua, cov khoom loj dua, thiab kev tiv thaiv muaj zog dua.

PTN yog ib lub network thauj cov ntaub ntawv, uas yog cov khoom ntawm kev sib koom ua ke ntawm lub network thauj thiab lub network ntaub ntawv. Lub protocol tseem ceeb yog TMPLS, uas muaj tsawg dua IP txheej thiab ntau dua overhead packets dua li cov khoom siv network. Nws tuaj yeem ua tiav kev sib txuas lus nplhaib thiab kev tiv thaiv. Nws yog ib lub network ntaub ntawv carrier-class (cov network ntaub ntawv ib txwm tsis tuaj yeem ua tau raws li cov kev cai ntawm carrier-class). Lub bandwidth kis ntawm PTN me dua li ntawm OTN. Feem ntau, qhov siab tshaj plaws ntawm pawg bandwidth ntawm PTN yog 10G, OTN ib nthwv dej yog 10G, txoj kev pab pawg tuaj yeem ncav cuag 400G-1600G, thiab cov thev naus laus zis tshiab tuaj yeem ncav cuag ib nthwv dej 40G. Nws yog lub hauv paus ntawm lub network kis.

OTN thiab SDH, WDM

OTN yog raws li WDM thev naus laus zis, kev ua haujlwm muaj zog, kev saib xyuas, kev tswj hwm thiab kev muab (OAM) muaj peev xwm ntawm SDH tau qhia los ntawm lub hauv paus ntawm lub peev xwm kis tau loj heev. OTN siv tus qauv FEC embedded, nplua nuj hauv kev saib xyuas thiab kev tswj hwm, thiab tsim nyog rau kev nkag mus rau cov kev pabcuam loj-granularity FEC kev kho qhov yuam kev coding, uas txhim kho qhov kev ua tau zoo ntawm qhov yuam kev me ntsis thiab ua rau lub sijhawm ntawm kev sib kis optical nce ntxiv.

Cov xwm txheej ntawm daim ntawv thov OTN

Lub network optical intelligent uas siv OTN yuav muab ib qho kev daws teeb meem zoo tshaj plaws rau kev xa cov kev pabcuam broadband loj. Lub network thauj mus los feem ntau yog tsim los ntawm lub network thauj mus los ntawm lub xeev, lub network thauj mus los ntawm lub xeev, thiab lub network thauj mus los hauv nroog (hauv zos). Lub network thauj mus los hauv nroog (hauv zos) tuaj yeem muab faib ua ib txheej tseem ceeb, txheej sib sau ua ke thiab txheej nkag mus. Piv nrog SDH, qhov zoo tshaj plaws ntawm OTN technology yog los muab kev teem sijhawm thiab kev xa cov bandwidth loj. Yog li ntawd, seb puas yuav siv OTN technology ntawm ntau txheej network nyob ntawm qhov loj ntawm cov kev pabcuam teem sijhawm tseem ceeb. Raws li qhov xwm txheej tam sim no ntawm lub network, cov khoom tseem ceeb ntawm txheej tseem ceeb ntawm lub network thauj mus los ntawm lub xeev, lub network thauj mus los hauv nroog thiab lub network thauj mus los hauv nroog feem ntau yog Gb/s thiab siab dua. Zoo dua OTN technology los tsim.
Rau qhov kev sib sau ua ke thiab kev nkag mus rau theem ntawm thaj chaw loj (hauv zos) kev thauj mus los hauv nroog, thaum cov khoom tseem ceeb teem sijhawm mus txog Gb / s theem, OTN thev naus laus zis kuj tseem tuaj yeem tsim tau zoo dua.

1. Lub teb chaws lub cev tsheb thauj mus los optical network Nrog rau IP-based network thiab cov kev pabcuam, kev tsim cov kev pabcuam tshiab thiab kev nce sai ntawm cov neeg siv broadband, IP tsheb khiav ntawm lub teb chaws lub cev tau nce siab heev, thiab qhov kev thov bandwidth tau nce exponentially txhua xyoo. WDM lub teb chaws lub cev tsheb nqa PSTN / 2G kev pabcuam ntev, NGN / 3G kev pabcuam ntev, thiab Internet lub teb chaws lub cev tsheb cov kev pabcuam. Vim muaj ntau cov kev pabcuam bearer, WDM lub teb chaws lub cev tsheb cov kab muaj kev xav tau ceev ceev rau kev tiv thaiv cov kev pabcuam bearer. Tom qab siv OTN thev naus laus zis, hom bearer ntawm lub teb chaws lub cev tsheb IP hla OTN tuaj yeem paub txog kev tiv thaiv SNCP, SDH-zoo li lub nplhaib network tiv thaiv, MESH network tiv thaiv thiab lwm yam kev tiv thaiv network. Txo qis heev.

2. Kev sib txuas lus hauv xeev/cheeb tsam Lub network thauj khoom siv kho qhov muag Cov routers hauv xeev/cheeb tsam nqa cov kev pabcuam ntawm cov chaw ua haujlwm deb (NGN/3G/IPTV/kab tshwj xeeb rau cov neeg siv khoom loj, thiab lwm yam). Los ntawm kev tsim cov network kis tau teeb liab hauv xeev/cheeb tsam OTN, kev sib txuas lus zoo thiab txhim khu kev qha ntawm GE/10GE, 2.5G/10GPOS cov kev pabcuam loj-granularity tuaj yeem ua tiav; cov network nplhaib, cov network nplhaib nyuaj, thiab MESH tuaj yeem tsim tau; lub network tuaj yeem nthuav dav raws li qhov xav tau; Paub txog kev teem sijhawm hla thiab kev saib xyuas cov kev pabcuam wavelength/sub-wavelength, thiab muab cov kev pabcuam kab wavelength/sub-wavelength rau cov neeg siv khoom loj; kuj paub txog kev xa lwm yam kev pabcuam xws li STM-1/4/16/64SDH, ATM, FE, DVB, HDTV, ANY, thiab lwm yam.

3. Lub network thauj khoom optical hauv nroog/hauv zos Ntawm txheej tseem ceeb ntawm lub network metro, lub network thauj khoom optical OTN tuaj yeem paub txog cov kev pabcuam broadband loj ntawm lub router sib sau ua ke hauv nroog, lub network hauv zos C4 (cheeb tsam/lub nroog) sib sau ua ke router thiab lub router tseem ceeb hauv nroog. xa. Lub interface upstream ntawm lub router feem ntau yog GE/10GE, thiab kuj tseem yuav yog 2.5G/10GPOS. Lub network thauj khoom optical OTN ntawm lub metro core l