Iimeko zosetyenziso lwe-OTN

OTN kunye ne-PTN
Kufuneka kuthiwe i-OTN kunye ne-PTN zitekhnoloji ezimbini ezihluke ngokupheleleyo, kwaye ngokuthetha ngobuchwephesha, kufuneka kuthiwe akukho nxibelelwano.
I-OTN luthungelwano lwezothutho lwamehlo, oluvele kwitekhnoloji yesahlulo sobude bemveli.Ikakhulu yongeza umsebenzi okrelekrele wokutshintsha optical.Inokuqonda i-optical crossover ngokusebenzisa uqwalaselo lwedatha ngaphandle kweejumpi zefiber manual.Ukugcinwa kunye nokuguquguquka kwenethiwekhi yezixhobo ze-WDM ziphuculwe kakhulu.Kwangelo xesha, inethiwekhi entsha ye-OTN ngokuthe ngcembe iguqukela kwi-bandwidth enkulu, amasuntswana amakhulu, kunye nokhuseleko olunamandla.

I-PTN yinethiwekhi yothutho yepakethe, eyimveliso yokuhlanganiswa kwenethiwekhi yezothutho kunye nenethiwekhi yedatha.Iprothokholi ephambili yi-TMPLS, enemigangatho embalwa ye-IP kunye neepakethi ezingaphezulu kunezixhobo zenethiwekhi.Inokuqonda uthungelwano lweringi kunye nokhuseleko.Yinethiwekhi yedatha yeklasi ye-carrier-class (uthungelwano lwedatha yemveli alukwazi ukuhlangabezana neemfuno zeklasi ye-carrier-class).I-bandwidth yothumelo ye-PTN incinci kune-OTN.Ngokuqhelekileyo, i-bandwidth yeqela eliphezulu le-PTN yi-10G, i-OTN enye i-wave yi-10G, indlela yeqela inokufikelela kwi-400G-1600G, kwaye iteknoloji yakutshanje inokufikelela kwi-40G enye.Yintsika yenethiwekhi yothumelo.

I-OTN kunye ne-SDH, i-WDM

I-OTN isekelwe kubuchwephesha be-WDM, ukusebenza okunamandla, ukugcinwa, ukulawula kunye nesabelo (OAM) amandla e-SDH aqaliswa ngesiseko somthamo omkhulu wothumelo.I-OTN isebenzisa i-FEC eqhelekileyo edibeneyo, ecebileyo ekugcinweni nasekulawuleni i-overhead, kwaye ifanelekile kwinkonzo ye-granularity enkulu yokufikelela kwi-coding ye-FEC yokulungiswa kwempazamo, ephucula ukusebenza kwe-bit error kunye nokwandisa ixesha lokuhanjiswa kwe-optical.

Iimeko zosetyenziso lwe-OTN

I-OTN-based intelligent optical network iya kunika isisombululo esifanelekileyo sokuhanjiswa kweenkonzo ze-broadband ye-granularity enkulu.Uthungelwano lwezothutho ikakhulu luqulunqwe luthungelwano lwezothutho lwe-trunk phakathi kwamaphondo, uthungelwano lwezothutho lwe-trunk yangaphakathi kwephondo, kunye nothungelwano lwezothutho lwemetro (yasekhaya).Uthungelwano lwezothutho lwemetro (lommandla) lunokwahlulwa ngakumbi lube ngumaleko ongundoqo, umaleko odityanisiweyo kunye nomgangatho wofikelelo.Xa kuthelekiswa ne-SDH, inzuzo enkulu yetekhnoloji ye-OTN kukubonelela ngokucwangciswa kunye nokuhanjiswa kwe-bandwidth enkulu ye-granularity.Ke ngoko, nokuba usebenzisa itekhnoloji ye-OTN kumaleko othungelwano ahlukeneyo kuxhomekeke kubungakanani benkonzo yokucwangcisa i-bandwidth granularity.Ngokwemeko yangoku yothungelwano, amasuntswana aphambili okucwangciswa komgangatho wothungelwano lwe-trunk yothungelwano lwamaphondo, uthungelwano lwe-trunk yangaphakathi yephondo kunye ne-metro (yengingqi) yothumelo lwenethiwekhi ngokubanzi i-Gb/s nangaphezulu.Itekhnoloji engcono ye-OTN yokwakha.
Kwinqanaba lokudibanisa kunye nokufikelela kwinqanaba le-metropolitan (yendawo) yezothutho zothutho, xa iinqununu eziphambili zokucwangcisa zifikelela kwinqanaba le-Gb / s, iteknoloji ye-OTN nayo inokwakhiwa ngokukhethiweyo.

1. Inethiwekhi yezothutho ye-trunk yesizwe ye-optical transport Ngonxibelelwano olusekelwe kwi-IP kunye neenkonzo, ukuphuhliswa kweenkonzo ezintsha kunye nokunyuka ngokukhawuleza kwabasebenzisi be-broadband, i-IP traffic kwi-trunk yesizwe iye yanda ngokukhawuleza, kwaye imfuno ye-bandwidth inyuke ngokukhawuleza ngonyaka. .Umgca we-WDM wesizwe we-trunk uphethe i-PSTN / 2G yeenkonzo zomgama omde, i-NGN / 3G yeenkonzo ezikude, kunye neenkonzo ze-intanethi ye-trunk line yelizwe.Ngenxa yobuninzi beenkonzo zabathwali, imizila ye-WDM yesizwe inesidingo esingxamisekileyo sokhuseleko lweenkonzo zabathwali.Emva kokwamkela itekhnoloji ye-OTN, imowudi yomphathi we-IP ye-trunk line yelizwe ngaphezulu kwe-OTN inokuqonda ukhuseleko lwe-SNCP, ukukhuselwa kwe-SDH-njengeringi yenethiwekhi, ukhuseleko lwenethiwekhi ye-MESH kunye nezinye iindlela zokukhusela inethiwekhi.Incitshiswe kakhulu.

2. Uthungelwano lothutho lwe-trunk optical lwangaphakathi lwephondo/lommandla Ii-router ze-backbone zangaphakathi zephondo/zengingqi zithwala iinkonzo phakathi kwee-ofisi ezikude (NGN/3G/IPTV/umgca okhethekileyo wabathengi abakhulu, njl. njl.).Ngokwakhiwa kwetrunk yephondo/yenqila ye-OTN yothungelwano lwe-optical transmission network, uthumelo olukhuselekileyo noluthembekileyo lwe-GE/10GE, 2.5G/10GPOS iinkonzo zegranularity ezinkulu zinokufezekiswa;uthungelwano lweringi, uthungelwano lweringi oluntsonkothileyo, kunye nothungelwano lweMESH lunokwenziwa;inethiwekhi inokwandiswa ngokwemfuno;Ukuqonda ukucwangciswa kwe-cross-schedule kunye nokulungiswa kweenkonzo ze-wavelength / sub-wavelength, kunye nokubonelela nge-wavelength / sub-wavelength yeenkonzo ezinikezelweyo zomgca kubathengi abakhulu;kwakhona ukuqonda ukuhanjiswa kwezinye iinkonzo ezifana STM-1/4/16/64SDH, ATM, FE, DVB, HDTV, NAYIPHI, njl.

3. I-Metro/local optical transport network Kwi-core layer ye-metro network, i-OTN ye-optical transport network inokuqonda iinkonzo ze-broadband ezinkulu phakathi kwe-metro aggregation router, inethiwekhi yendawo ye-C4 (indawo yengingqi/yedolophu) i-aggregation router kunye ne-metropolitan. i-router engundoqo.thumela.Ujongano oluphezulu lomzila ubukhulu becala yi-GE/10GE, kwaye isenokuba yi-2.5G/10GPOS.Uthungelwano lwezothutho ze-OTN kwi-metro core l