Iimeko zesicelo se-OTN

I-OTN kunye ne-PTN
Kufuneka kuthiwe i-OTN kunye ne-PTN ziiteknoloji ezimbini ezahlukeneyo ngokupheleleyo, kwaye xa sithetha ngobuchwephesha, kufanele kuthiwe akukho nxibelelwano.
I-OTN yinethiwekhi yothutho olubonakalayo, oluvela kwitekhnoloji yendabuko yokwahlulahlula ubude be-wavelength. Ngokuyintloko yongeza umsebenzi wokutshintsha okrelekrele we-optical. Inokwenza i-optical crossover ngokuseta idatha ngaphandle kwee-fiber jumpers ezenziwe ngesandla. Ukugcinwa kunye nokuguquguquka kwenethiwekhi yezixhobo ze-WDM kuphuculwe kakhulu. Kwangaxeshanye, inethiwekhi entsha ye-OTN itshintsha kancinci kancinci ibe yi-bandwidth enkulu, amasuntswana amakhulu, kunye nokhuseleko oluqinileyo.

I-PTN yinethiwekhi yothutho lweepakethi, eyimveliso yokuhlanganiswa kwenethiwekhi yothutho kunye nenethiwekhi yedatha. Iprotokholi ephambili yi-TMPLS, eneeleya ze-IP ezimbalwa kunye neepakethi ezingaphezulu kunezixhobo zenethiwekhi. Inokwenza uthungelwano olujikelezayo kunye nokhuseleko. Yinethiwekhi yedatha yodidi lwabathwali (iinethiwekhi zedatha zemveli azinakufikelela kwiimfuno zeklasi yabathwali). I-bandwidth yothungelwano lwe-PTN incinci kuneye-OTN. Ngokubanzi, i-bandwidth yeqela eliphezulu le-PTN yi-10G, i-OTN single wave yi-10G, indlela yeqela inokufikelela kwi-400G-1600G, kwaye itekhnoloji yamva nje inokufikelela kwi-single wave 40G. Yisiseko senethiwekhi yothungelwano.

I-OTN kunye ne-SDH, i-WDM

I-OTN isekelwe kwitekhnoloji ye-WDM, amandla okusebenza, ukugcinwa, ulawulo kunye nokunikezelwa kwamandla (OAM) e-SDH aziswa ngokusekelwe kumthamo omkhulu wokudlulisela. I-OTN isebenzisa i-FEC esemgangathweni efakwe ngaphakathi, etyebileyo kwi-overhead yolondolozo kunye nolawulo, kwaye ifanelekile kwi-FEC yokufikelela kwinkonzo enkulu, ephucula ukusebenza kwempazamo ye-bit kwaye yonyusa ixesha lokudlulisela kwe-optical.

Iimeko zesicelo se-OTN

Inethiwekhi ye-optical ekrelekrele esekelwe kwi-OTN iya kubonelela ngesisombululo esifanelekileyo sokudluliselwa kweenkonzo ze-broadband ezinkulu. Inethiwekhi yezothutho ikakhulu yenziwe yinethiwekhi yezothutho lwe-trunk phakathi kwamaphondo, inethiwekhi yezothutho lwe-trunk ngaphakathi kwamaphondo, kunye nenethiwekhi yezothutho ye-metro (yasekuhlaleni). Inethiwekhi yezothutho ye-metro (yasekuhlaleni) inokwahlulwahlulwa ngakumbi ibe yi-core layer, i-aggregation layer kunye ne-access layer. Xa kuthelekiswa ne-SDH, inzuzo enkulu yetekhnoloji ye-OTN kukubonelela ngeshedyuli kunye nokudluliselwa kwe-bandwidth enkulu ye-granularity. Ke ngoko, nokuba kusetyenziswe itekhnoloji ye-OTN kwiileya ezahlukeneyo zenethiwekhi kuxhomekeke kubungakanani be-main scheduling service bandwidth granularity. Ngokwemeko yangoku yenethiwekhi, amasuntswana aphambili eshedyuli ye-core layer yenethiwekhi yokudluliselwa kwe-trunk phakathi kwamaphondo, inethiwekhi yokudluliselwa kwe-trunk ngaphakathi kwamaphondo kunye nenethiwekhi yokudluliselwa kwe-metro (yasekuhlaleni) ngokubanzi yi-Gb/s nangaphezulu. Itekhnoloji engcono ye-OTN yokwakha.
Kwinqanaba lokudibanisa kunye nokufikelela kwinethiwekhi yezothutho yommandla wesixeko (wengingqi), xa amasuntswana aphambili eshedyuli efikelela kwinqanaba le-Gb/s, itekhnoloji ye-OTN nayo inokwakhiwa ngokukhethekileyo.

1. Uthungelwano lwezothutho lwe-trunk yesizwe Ngenethiwekhi kunye neenkonzo ezisekelwe kwi-IP, uphuhliso lweenkonzo ezintsha kunye nokwanda ngokukhawuleza kwabasebenzisi be-broadband, ithrafikhi ye-IP kwi-trunk yesizwe inyuke kakhulu, kwaye imfuno ye-bandwidth inyuke kakhulu unyaka nonyaka. Umgca we-trunk wesizwe we-WDM uthwala iinkonzo zomgama omde ze-PSTN/2G, iinkonzo zomgama omde ze-NGN/3G, kunye neenkonzo ze-trunk yesizwe ye-intanethi. Ngenxa yobuninzi beenkonzo zokuthwala, imigca ye-trunk yesizwe ye-WDM inesidingo esingxamisekileyo sokukhuselwa kweenkonzo zokuthwala. Emva kokusebenzisa itekhnoloji ye-OTN, indlela yokuthwala ye-IP yomgca we-trunk wesizwe phezu kwe-OTN inokufezekisa ukhuseleko lwe-SNCP, ukhuseleko lwenethiwekhi yeringi efana ne-SDH, ukhuseleko lwenethiwekhi ye-MESH kunye nezinye iindlela zokukhusela inethiwekhi. Incitshisiwe kakhulu.

2. Inethiwekhi yothutho lwe-optical trunk ngaphakathi kwephondo/kwengingqi Ii-routers ze-backbone zangaphakathi kwephondo/kwengingqi zithwala iinkonzo phakathi kwee-ofisi ezikude (NGN/3G/IPTV/umgca okhethekileyo kubathengi abakhulu, njl.njl.). Ngokwakhiwa kwenethiwekhi yothutho lwe-optical trunk yephondo/yengingqi ye-OTN, uthutho olukhuselekileyo noluthembekileyo lwe-GE/10GE, iinkonzo ze-2.5G/10GPOS ezinkulu zinokwenziwa; iinethiwekhi zeringi, iinethiwekhi zeringi ezintsonkothileyo, kunye neenethiwekhi ze-MESH zinokwenziwa; inethiwekhi inokwandiswa xa ifuneka; Ukuqonda ucwangciso olunqamlezileyo kunye nokulungiswa kweenkonzo ze-wavelength/sub-wavelength, kunye nokubonelela ngeenkonzo zomgca ezinikezelweyo ze-wavelength/sub-wavelength kubathengi abakhulu; nokuqonda uthutho lwezinye iinkonzo ezifana ne-STM-1/4/16/64SDH, i-ATM, i-FE, i-DVB, i-HDTV, NAYIPHI na, njl.njl.

3. Inethiwekhi yezothutho lwe-Metro/local Kwindawo engundoqo yenethiwekhi ye-metro, inethiwekhi yezothutho lwe-OTN optical inokuphumeza iinkonzo ezinkulu ze-broadband phakathi kwe-metro aggregation router, inethiwekhi yendawo ye-C4 (yesithili/yesithili) aggregation router kunye ne-metro core router. I-interface ephezulu ye-router ikakhulu yi-GE/10GE, kwaye isenokuba yi-2.5G/10GPOS. Inethiwekhi yezothutho lwe-OTN optical kwi-metro core l