OTN kanye ne-PTN
Kufanele kushiwo ukuthi i-OTN ne-PTN ubuchwepheshe obubili obuhluke ngokuphelele, futhi ukukhuluma ngokobuchwepheshe, kufanele kushiwo ukuthi akukho ukuxhumana.
I-OTN inethiwekhi yezokuthutha ebonakalayo, ethuthukiswe kusukela kubuchwepheshe bendabuko bokuhlukaniswa kwe-wavelength.Ingeza ngokuyinhloko umsebenzi wokushintsha optical ohlakaniphile.Ingakwazi ukubona i-optical crossover ngokusebenzisa ukucushwa kwedatha ngaphandle kwe-manuwali fiber jumpers.Ukugcinwa nokuguquguquka kwenethiwekhi kwemishini ye-WDM kuthuthukiswa kakhulu.Ngesikhathi esifanayo, inethiwekhi entsha ye-OTN kancane kancane iguqukela kumkhawulokudonsa omkhulu, izinhlayiya ezinkulu, nokuvikelwa okunamandla.
I-PTN iyinethiwekhi yokuthutha yephakethe, ewumkhiqizo wokuhlanganiswa kwenethiwekhi yezokuthutha kanye nenethiwekhi yedatha.Iphrothokholi eyinhloko yi-TMPLS, enezendlalelo ze-IP ezimbalwa kanye namaphakethe aphezulu kunamadivayisi enethiwekhi.Ingabona ukuxhumana kwenethiwekhi nokuvikelwa.Inethiwekhi yedatha yesigaba senkampani yenethiwekhi (amanethiwekhi edatha endabuko awakwazi ukuhlangabezana nezidingo zesigaba senkampani yenethiwekhi).Umkhawulokudonsa wokudlulisa we-PTN mncane kunalowo we-OTN.Ngokuvamile, umkhawulokudonsa weqembu omkhulu we-PTN yi-10G, igagasi elilodwa le-OTN yi-10G, indlela yeqembu ingafinyelela ku-400G-1600G, futhi ubuchwepheshe bamuva bungafinyelela igagasi elilodwa elingu-40G.Iwumgogodla wenethiwekhi yokudlulisela.
I-OTN ne-SDH, i-WDM
I-OTN isekelwe kubuchwepheshe be-WDM, amandla okusebenza okunamandla, ukugcinwa, ukuphatha kanye nesabelo (OAM) we-SDH ethulwa ngesisekelo somthamo omkhulu wokudlulisa.I-OTN isebenzisa i-FEC evamile eshumekiwe, enothile ngokulungiswa nokuphatha, futhi ifanele ukufinyelela kwesevisi ye-granularity enkulu ekubhalweni kwekhodi yokulungisa iphutha le-FEC, ethuthukisa ukusebenza kwephutha elincane futhi ikhuphule ubude besikhathi sokudluliswa kwe-optical.
Izimo zohlelo lokusebenza lwe-OTN
Inethiwekhi yokubona ehlakaniphile esekwe ku-OTN izohlinzeka ngesixazululo esikahle sokudluliswa kwezinsizakalo ze-broadband ye-granularity enkulu.Inethiwekhi yezokuthutha yakhiwe ikakhulukazi inethiwekhi yezokuthutha ezinkulu zezifundazwe, inethiwekhi yezokuthutha ezinkulu zezifundazwe, kanye nenethiwekhi yezokuthutha ye-metro (yasekhaya).Inethiwekhi yezokuthutha ye-metro (yasendaweni) ingaphinda ihlukaniswe ibe isendlalelo esiyinhloko, isendlalelo sokuhlanganisa kanye nesendlalelo sokufinyelela.Uma kuqhathaniswa ne-SDH, inzuzo enkulu yobuchwepheshe be-OTN ukuhlinzeka ngokuhlela nokudluliswa komkhawulokudonsa omkhulu wembudumbudu.Ngakho-ke, noma ukusebenzisa ubuchwepheshe be-OTN ezindlaleni zenethiwekhi ezihlukene kuncike kusayizi wohlelo oluyinhloko lobumbudumbudu bomkhawulokudonsa wesevisi yokuhlela.Ngokwesimo samanje senethiwekhi, izinhlayiya eziyinhloko zokuhlelwa kwesendlalelo esiyinhloko senethiwekhi yokudlulisa isiqu sezifundazwe, inethiwekhi ye-trunk transmission yangaphakathi kwesifundazwe kanye nenethiwekhi ye-metro (yasendaweni) yokudlulisa ngokuvamile i-Gb/s nangaphezulu.Ubuchwepheshe obungcono be-OTN bokwakha.
Ngezinga lokuhlanganisa nelokufinyelela lenethiwekhi yezokuthutha yedolobha elikhulu (lendawo), lapho izinhlayiya eziyinhloko zokushejula zifinyelela ileveli ye-Gb/s, ubuchwepheshe be-OTN nabo bungakhiwa ngokukhethwayo.
1. Inethiwekhi kazwelonke ye-trunk optical transport Ngenethiwekhi nezinsizakalo ezisekelwe ku-IP, ukuthuthukiswa kwezinsizakalo ezintsha kanye nokwanda okusheshayo kwabasebenzisi be-broadband, ithrafikhi ye-IP esiqwini sikazwelonke inyuke kakhulu, futhi isidingo somkhawulokudonsa sikhuphuke kakhulu unyaka nonyaka. .I-WDM trunk line ithwala izinsiza zebanga elide ze-PSTN/2G, izinsiza zebanga elide ze-NGN/3G, kanye nezinsiza zomugqa we-inthanethi kazwelonke.Ngenxa yobuningi bezinsizakalo ezithwalayo, imigqa yeziqu ze-WDM kazwelonke inesidingo esiphuthumayo sokuvikelwa kwezinsizakalo zabaphathi.Ngemva kokwamukela ubuchwepheshe be-OTN, imodi yokuthwala yomugqa we-IP kazwelonke phezu kwe-OTN ingabona ukuvikelwa kwe-SNCP, ukuvikelwa kwenethiwekhi yendandatho efana ne-SDH, ukuvikelwa kwenethiwekhi ye-MESH nezinye izindlela zokuvikela inethiwekhi.Kuncishiswe kakhulu.
2. Inethiwekhi yezokuthutha ye-trunk optical yangaphakathi kwesifundazwe/yesifunda Amarutha omgogodla wangaphakathi kwesifundazwe/isifunda aphatha izinsiza phakathi kwamahhovisi amabanga amade (NGN/3G/IPTV/umugqa okhethekile wamakhasimende amakhulu, njll.).Ngokwakhiwa kwenethiwekhi yesifunda/yesifunda ye-OTN yokudlulisa amehlo, ukudluliswa okuphephile nokuthembekile kwe-GE/10GE, 2.5G/10GPOS izinsiza ze-granularity ezinkulu kungenziwa;amanethiwekhi endandatho, amanethiwekhi endandatho ayinkimbinkimbi, namanethiwekhi e-MESH angakhiwa;inethiwekhi inganwetshwa ngokufunwa;Qaphela ukuhlela okuphambene nokulungiswa kwezinsizakalo ze-wavelength/sub-wavelength, futhi unikeze izinsizakalo zomugqa ozinikele we-wavelength/sub-wavelength kumakhasimende amakhulu;futhi uqaphele ukudluliswa kwamanye amasevisi afana ne-STM-1/4/16/64SDH, ATM, FE, DVB, HDTV, ANY, njll.
3. Inethiwekhi yezokuthutha ye-metro/yendawo ebonakalayo Kusendlalelo esiyinhloko senethiwekhi ye-metro, inethiwekhi yezokuthutha ebonakalayo ye-OTN ingathola izinsiza ezinkulu ze-broadband phakathi kwerutha ye-metro aggregation, inethiwekhi yendawo C4 (isikhungo sesifunda/yesifunda) sokuhlanganisa kanye ne-metropolitan. core router.thumela.Isixhumi esibonakalayo esikhuphuka nomfula somzila ngokuyinhloko yi-GE/10GE, futhi singase sibe yi-2.5G/10GPOS.Inethiwekhi yezokuthutha ebonakalayo ye-OTN ku-metro core l
Isikhathi sokuthumela: Nov-07-2022