Ita ce babbar hanyar sadarwa ta zamani ta zamani. A takaice dai, ita ce hanyar sadarwa ta zamani mai tushen raƙuman ruwa.
OTN wata hanyar sadarwa ce ta sufuri wadda ta dogara ne akan fasahar rarraba raƙuman raƙuman ruwa wadda ke tsara hanyar sadarwa a matakin gani, kuma ita ce babbar hanyar sadarwa ta jigilar kayayyaki ta tsararraki masu zuwa. OTNsabuwar tsara ce ta "tsarin watsawa na dijital" da "tsarin watsawa na gani" wanda aka tsara ta hanyar jerin shawarwarin ITU-T kamar G.872, G.709, da G.798. Zai magance matsalar rashin ayyukan raƙuman ruwa/ƙananan raƙuman ruwa a cikin hanyoyin sadarwar WDM na gargajiya. Matsaloli kamar ƙarancin damar tsara lokaci, ƙarancin damar sadarwa, da ƙarancin damar kariya. OTN tana magance jerin matsaloli da dama na tsarin gargajiya ta hanyar jerin yarjejeniyoyi.
OTN ta ƙunshi yankin lantarki na gargajiya (watsawa ta dijital) da yankin gani (watsawa ta analog), kuma mizani ne na haɗin kai don sarrafa yankunan lantarki da na gani.
Babban manufar Sarrafa OTNkasuwanci ne mai matakin tsayin tsayi, wanda ke tura hanyar sadarwa ta sufuri zuwa matakin hanyar sadarwa ta gani mai tsawon tsayi da yawa. Saboda haɗakar fa'idodin yankin gani da sarrafa yankin lantarki, OTN na iya samar da babban ƙarfin watsawa, haɗin tsayin tsayi/ƙasa-ƙasa mai haske da kariyar aji mai ɗaukar kaya, kuma ita ce mafi kyawun fasaha don watsa ayyukan manyan barbashi na broadband.
babban fa'ida
Babban fa'idar OTN ita ce tana da cikakken jituwa da baya, tana iya ginawa akan ayyukan gudanarwa na SONET/SDH da ake da su, ba wai kawai tana samar da cikakken bayyanannen ka'idojin sadarwa da ake da su ba, har ma tana ba da damar haɗi daga ƙarshe zuwa ƙarshe da hanyoyin sadarwa don WDM, Tana ba da ƙayyadaddun haɗin layin gani don ROADM, kuma tana ƙara ƙarfin haɗakar da gyaran ƙananan hanyoyin sadarwa. Haɗin kai daga ƙarshe zuwa ƙarshe da damar hanyoyin sadarwa galibi an kafa su ne bisa ga SDH, kuma an samar da samfurin layin gani.
Manufar OTN ta ƙunshi layin gani da hanyar sadarwa ta layin lantarki, kuma fasaharta ta gaji fa'idodi biyu na SDH da WDM. Manyan fasalulluka na fasaha sune kamar haka:
1. Rufe siginar abokin ciniki daban-daban da watsawa mai haske Tsarin firam ɗin OTN bisa ga ITU-TG.709 na iya tallafawa taswira da watsawa mai haske na siginar abokin ciniki daban-daban, kamar SDH, ATM, Ethernet, da sauransu. Ana iya cimma daidaiton rufawa da watsawa mai haske ga SDH da ATM, amma tallafin Ethernet a farashi daban-daban ya bambanta. ITU-TG.sup43 yana ba da shawarwari na ƙarin don ayyukan 10GE don cimma matakai daban-daban na watsawa mai haske, yayin da ga GE, 40GE, 100GE Ethernet, ayyukan cibiyar sadarwa masu zaman kansu Fiber Channel (FC) da ayyukan cibiyar sadarwa masu shiga Gigabit Passive Optical Network (GPON)), da sauransu, ana tattaunawa kan hanyar taswira mai daidaito zuwa firam ɗin OTN a halin yanzu.
2. Yawan amfani da bandwidth, haɗuwa da daidaitawar manyan barbashi Barbashin bandwidth na Layer na lantarki da OTN ta ayyana sune raka'o'in bayanai na tashar gani (O-DUk, k=0,1,2,3), wato ODUO(GE,1000M/S)ODU1 (2.5Gb/s), ODU2 (10Gb/s) da ODU3 (40Gb/s), girman bandwidth na Layer na gani shine tsawon rai, idan aka kwatanta da girman jadawalin SDH VC-12/VC-4, yawan amfani da OTN, haɗuwa da kuma barbashi da aka saita a bayyane yake sun fi girma, wanda zai iya inganta daidaitawa da ingancin watsawa na ayyukan abokin ciniki na bayanai masu girman bandwidth.
3. Ƙarfin ikon sarrafa sama da kulawa mai ƙarfi OTN yana ba da damar sarrafa sama kamar SDH, kuma tsarin firam ɗin OTN na layin OTN Optical Channel (OCh) yana haɓaka ƙarfin sa ido na dijital na wannan Layer sosai. Bugu da ƙari, OTN kuma yana ba da aikin sa ido kan haɗin kai mai layuka 6 (TCM), wanda ke ba da damar yin sa ido kan aiki daga ƙarshe zuwa ƙarshe da sassa da yawa a lokaci guda yayin hanyar sadarwar OTN. Yana ba da hanyoyin sarrafawa masu dacewa don watsawa tsakanin masu aiki.
4. Ingantaccen damar sadarwa da kariya Ta hanyar gabatar da tsarin firam na OTN, crossover ODUk da multiplexer mai sake saitawa mai girma-girma (ROADM), an inganta ƙarfin hanyar sadarwa na hanyar sadarwa ta gani, kuma tsarin bandwidth na SDHVC mai tushen 12/VC-4 da kuma matsayin WDM mai ma'ana-zuwa-maki wanda ke samar da babban bandwidth na watsawa. Amfani da fasahar gyara kuskuren gaba (FEC) yana ƙara nisan watsa layin gani sosai. Bugu da ƙari, OTN zai samar da ƙarin ayyukan kariya na sabis bisa ga layin lantarki da layin gani, kamar kariyar haɗin hanyar sadarwa ta photonic mai tushen ODUk (SNCP) da kariyar hanyar sadarwa ta zobe da aka raba, tashar gani ta tushen Layer ko kariyar sashe mai yawa, da sauransu. Amma fasahar zobe da aka raba ba ta daidaita ba tukuna.
Lokacin Saƙo: Nuwamba-01-2022