Zochitika za OTN Application

OTN ndi PTN
Tiyenera kunena kuti OTN ndi PTN ndi matekinoloje awiri osiyana kotheratu, ndipo mwaukadaulo, tiyenera kunena kuti palibe kulumikizana.
OTN ndi netiweki yoyendera ya kuwala, yomwe idasinthidwa kuchokera ku ukadaulo wachikhalidwe wogawa ma wavelength. Imawonjezera makamaka ntchito yanzeru yosinthira kuwala. Imatha kupanga ma crossover a kuwala kudzera mu kasinthidwe ka data popanda ma jumper a fiber opangidwa ndi manja. Kusinthasintha kwa zida za WDM komanso kusinthasintha kwa ma network kumawonjezeka kwambiri. Nthawi yomweyo, netiweki yatsopano ya OTN ikusintha pang'onopang'ono kukhala bandwidth yayikulu, tinthu tating'onoting'ono tambiri, komanso chitetezo champhamvu.

PTN ndi netiweki yonyamula mapaketi, yomwe ndi chipatso cha kuphatikiza netiweki yonyamula ndi netiweki ya data. Njira yayikulu ndi TMPLS, yomwe ili ndi zigawo zochepa za IP komanso mapaketi ambiri kuposa zida za netiweki. Imatha kukwaniritsa maukonde ndi chitetezo cha ring network. Ndi netiweki ya data ya carrier-class (maukonde a data akale sangakwaniritse zofunikira za carrier-class). Bandwidth yotumizira ya PTN ndi yaying'ono kuposa ya OTN. Kawirikawiri, bandwidth yayikulu ya gulu la PTN ndi 10G, mafunde amodzi a OTN ndi 10G, njira ya gulu imatha kufika 400G-1600G, ndipo ukadaulo waposachedwa ukhoza kufika mafunde amodzi 40G. Ndiwo maziko a netiweki yotumizira.

OTN ndi SDH, WDM

OTN imachokera ku ukadaulo wa WDM, mphamvu zamphamvu zogwirira ntchito, kukonza, kuyang'anira ndi kupereka (OAM) za SDH zimayambitsidwa pogwiritsa ntchito mphamvu yayikulu kwambiri yotumizira mauthenga. OTN imagwiritsa ntchito FEC yokhazikika, yokhala ndi ndalama zambiri zosamalira ndi kuyang'anira mauthenga, ndipo ndi yoyenera kugwiritsa ntchito ma code a FEC okonza zolakwika, zomwe zimapangitsa kuti magwiridwe antchito a zolakwika za bit agwire bwino ntchito ndikuwonjezera nthawi yotumizira mauthenga.

Zochitika za OTN Application

Netiweki yanzeru yochokera ku OTN ipereka yankho labwino kwambiri pakutumiza ntchito za intaneti yamagetsi yamitundu yosiyanasiyana. Netiweki yoyendera imapangidwa makamaka ndi netiweki yoyendera ya trunk pakati pa zigawo, netiweki yoyendera ya trunk mkati mwa zigawo, ndi netiweki yoyendera ya metro (yakomweko). Netiweki yoyendera ya metro (yakomweko) ikhoza kugawidwanso kukhala core layer, aggregation layer ndi access layer. Poyerekeza ndi SDH, ubwino waukulu wa ukadaulo wa OTN ndikupereka nthawi ndi kutumiza kwa bandwidth yayikulu ya granularity. Chifukwa chake, ngati kugwiritsa ntchito ukadaulo wa OTN pazigawo zosiyanasiyana za netiweki kumadalira kukula kwa bandwidth yayikulu yokonzekera nthawi. Malinga ndi momwe zilili pano pa netiweki, tinthu tating'onoting'ono ta core layer scheduling ya netiweki yotumizira ya trunk pakati pa zigawo, netiweki yotumizira ya trunk mkati mwa zigawo ndi netiweki yotumizira ya metro (yakomweko) nthawi zambiri zimakhala Gb/s ndi kupitirira apo. Ukadaulo wabwino wa OTN womangira.
Pakusonkhanitsa ndi kufika pamlingo wa netiweki yoyendera ya m'dera la mzinda (local), pamene tinthu tating'onoting'ono ta ndandanda yaikulu tifika pa mulingo wa Gb/s, ukadaulo wa OTN ukhozanso kupangidwa mwapadera.

1. Netiweki ya dziko lonse ya trunk optical traffic Ndi netiweki ndi ntchito zochokera ku IP, chitukuko cha mautumiki atsopano komanso kuchuluka kwa ogwiritsa ntchito broadband mwachangu, kuchuluka kwa ma IP pa trunk ya dziko lonse kwawonjezeka kwambiri, ndipo kufunikira kwa bandwidth kwawonjezeka kwambiri chaka ndi chaka. WDM national trunk line imanyamula mautumiki akutali a PSTN/2G, mautumiki akutali a NGN/3G, ndi mautumiki a intaneti. Chifukwa cha kuchuluka kwa mautumiki onyamula, WDM national trunk line ikufunika kwambiri kuti chitetezo cha mautumiki onyamula chitetezeke. Pambuyo pogwiritsa ntchito ukadaulo wa OTN, njira yonyamula ya IP ya dziko lonse ya trunk line pamwamba pa OTN imatha kuteteza SNCP, chitetezo cha netiweki yonga SDH, chitetezo cha netiweki ya MESH ndi njira zina zotetezera netiweki. Yachepetsedwa kwambiri.

2. Netiweki yoyendera ma trunk optical mkati mwa chigawo/chigawo Ma router a msana wa chigawo/chigawo amanyamula mautumiki pakati pa maofesi akutali (NGN/3G/IPTV/mzere wapadera kwa makasitomala akuluakulu, ndi zina zotero). Kudzera mu kupanga netiweki yotumizira ma trunk optical ya chigawo/chigawo ya OTN, kutumiza kotetezeka komanso kodalirika kwa GE/10GE, 2.5G/10GPOS ntchito zazikulu za granularity zitha kuchitika; ma netiweki a ring, ma netiweki ovuta a ring, ndi ma netiweki a MESH zitha kupangidwa; netiwekiyo ikhoza kukulitsidwa ngati pakufunika; Kuzindikira cross-scheduling ndi kukonza mautumiki a wavelength/sub-wavelength, ndikupereka mautumiki apadera a wavelength/sub-wavelength kwa makasitomala akuluakulu; komanso kuzindikira kutumiza mautumiki ena monga STM-1/4/16/64SDH, ATM, FE, DVB, HDTV, ANY, ndi zina zotero.

3. Netiweki yoyendera ma Metro/local optical Pa gawo lalikulu la netiweki ya metro, netiweki yoyendera ma OTN optical imatha kupereka ntchito zazikulu za broadband pakati pa rauta yolumikizira ma metro, rauta yolumikizira ma C4 (local network/county center) ndi rauta ya metro core. Tumizani. Mawonekedwe apamwamba a rauta makamaka ndi GE/10GE, ndipo akhoza kukhala 2.5G/10GPOS. Netiweki yoyendera ma OTN optical pa metro core l.