DWDM na OTN ni sisitemu ebyiri za tekiniki zatejwe imbere n’ikoranabuhanga ryo gukwirakwiza imirongo y’umurongo mu myaka yashize: DWDM irashobora gufatwa nkibya PDH byabanje (kwanduza ingingo), kandi serivisi zo kumurongo no kumurongo zuzuzwa kuri ODF binyuze mubisimbuka bikomeye;OTN ni nka SDH (ubwoko butandukanye bwa Networking), hamwe numurimo wo guhuza (niba ari ihuriro ryumuriro w'amashanyarazi cyangwa urwego rwa optique).
Hamwe nogukomeza kwihuta mubikorwa bya IP YOSE, kurubu, tutitaye kumugongo wigihugu, umugongo wintara cyangwa sisitemu ya WDM ya sisitemu, OTN ninzira nyamukuru muguhitamo ibikoresho mugice cyambere cyo kubaka urusobe.Ibikoresho bya OTN byasimbuye buhoro buhoro ibikoresho bya DWDM nibyiza byihariye (Bisa nibikoresho bya SDH bisimbuza ibikoresho bya PDH).Nka tekinoroji nshya nuburyo bushya bwibicuruzwa, OTN yabaye intandaro yinganda zubu.Iyi ngingo izasesengura kandi igereranye ibikoresho bya DWDM, ibikoresho bya OTN.
1 Amahame yibanze ya DWDM na OTN
Hamwe noguhindura ibisabwa bya serivisi hamwe na granularité, birakenewe kugwiza serivise nini-granularitike binyuze muri fibre optique (fibre imwe cyangwa fibre-fibre) hanyuma ukayigabanyamo ibice bitandukanye byumuraba kugirango wohereze intera ndende.Igabana ryumurongo wo kugwiza tekinoroji igaragara nkuko ibihe bisabwa.
DWDM ni igabanywa ryumurongo wo kugwiza (Wavelength Division Multiplexing), igabanya ibimenyetso bya optique yuburebure butandukanye bwumurongo umwe muri fibre imwe yo kwanduza.Ikoranabuhanga rya WDM nubuhanga bukuze gakondo bwa tekinoroji yo kugabana imyaka irenga icumi.Irashobora kugabanywamo ibice bibiri: kugabanura gake kugabana kugwiza (CWDM), hamwe nintera nini (20nm);kugabana kwinshi kwinshi kugabana (DWDM), hamwe nintera ntoya (munsi cyangwa ihwanye na 0.8nm).Bitewe nintera ngufi yo kohereza ya CWDM, umubare munini wibikoresho bya DWDM byoherejwe mumiyoboro isanzwe yohereza yabakozi batandukanye.
Sisitemu ifunguye ya DWDM igizwe nibice bikurikira: OTM irangiza serivisi yo gupakira no gupakurura kuri optique yumurongo wa terefone, OA irangiza gutunganya optique ya relay amplification yo gutunganya ibimenyetso byinshi byerekanwe kumurongo wa optique, kandi OTU ikuzuza ibitari bisanzwe. urumuri rwumucyo kugirango uhure na G .694.1 (2) imikorere yumurongo wumurongo wumurongo wumurongo wumurongo wumurongo wumurongo, OMU / ODU: urangiza kugwiza / demultiplexing ya G.694.1 (2) itara ryerekana ibimenyetso byerekana umurongo, OBA (amplifier power) iratera imbere imbaraga za signal ya optique ihuriweho mukwiyongera, bityo bikongerera imbaraga optique ya optique ya buri burebure bwumurongo, na OPA (pre-amplification) itezimbere kwakira sensibilité ya buri muhengeri wongera imbaraga za optique yinjiza ibimenyetso byinshi.
OTN numuyoboro wo gutwara abantu (Optical Transport Network), uzwi kandi nka OTH (Optical Transport Hierarchy) muri ITU-T.Yatunganijwe hashingiwe ku kugabana gakondo gakondo kandi ihuza ibyiza bya DWDM na SDH.Ihuza ibyiza bya optique ya domaine hamwe nogutunganya amashanyarazi yumuriro, itanga ubushobozi bwogukwirakwiza, mu mucyo rwose kurangiza-kurangira-umurongo-wo-guhuza no kurinda urwego rwabatwara, kandi nubuhanga buhebuje bwo kohereza umurongo mugari wa serivisi nini-nini.Mu myaka itanu ishize, abashoramari bohereje ibikoresho bya OTN murwego runini mumiyoboro itandukanye.
2 Kugereranya ibiranga tekinike ya DWDM na OTN
Nubwo sisitemu ya DWDM itezimbere cyane uburyo bwo kohereza fibre optique kandi igashyigikira ihererekanyabubasha rya serivise nini-nini, kubera kugabanuka kwikoranabuhanga rya diviziyo yuburebure, uburebure bwumurongo bwashyizweho muburyo bwa point-point kandi ntibushobora guhinduka muburyo bukomeye.Igipimo cyo gukoresha ibikoresho ntabwo kiri hejuru, kandi guhinduka kwa serivisi ntabwo bihagije.Urujya n'uruza rw'ubucuruzi rwahindutse, kandi biragoye cyane kubihindura.Gahunda hagati ya serivisi ya DWDM ni gahunda yumubiri kuri ODF.Imiyoborere y'urusobe ikurikirana gusa imikorere ya optique (imiyoboro y'urusobekerane byite ni mbarwa kandi amakuru yo gucunga imiyoboro aroroshye), kandi hariho uburyo buke bwo gukemura ibibazo hamwe ningorabahizi zo kubungabunga.
OTN iragwa imbaraga nini zo gukwirakwiza ibikorwa bya DWDM kandi ifite optique ya optoelectronic ihuriweho na gahunda yo kurinda.Binyuze mu kumenyekanisha ikoranabuhanga rya ROADM, tekinoroji ya OTH, G.709 enapsulation no kugenzura indege, ikemura ikibazo cyimiyoboro gakondo ya WDM idafite umurongo wa / umurongo wa serivisi wateganijwe., Intege nke zo guhuza, ubushobozi bwo kurinda intege nke nibindi bibazo.Urwego rw'amashanyarazi rushyira mubikorwa gahunda rushingiye ku burebure buke (nka GE, 2.5G, 10G, 40G, 100G), kandi gahunda ya optique iteganya ahanini ishingiye ku burebure bwa 10G, 40G cyangwa 100G, hamwe no gukoresha umurongo mwinshi;ifite hejuru ya bytes nyinshi, kandi OAM imikorere yayo / P irakomeye kuruta WDM.
Mubyongeyeho, OTN na DWDM birashobora gukoreshwa mubisanzwe kurwego rwa optique, itandukaniro nuko OTN ifite subframe yamashanyarazi.Kubwibyo, ibikoresho bimwe na bimwe bya DWDM kumurongo uriho byongeweho hamwe na elegitoroniki ihuza ibice bito hanyuma ikazamurwa kuri OTN.
3 Kugereranya imiyoboro ya DWDM na OTN
Imiyoboro ivanze ya OTN na DWDM izatakaza ibyiza bya OTN (imiterere yikadiri itandukanye na WDM gakondo, kandi guhuza bizagira ingaruka).
Kubera ko OTN optique ihuza ihuza cyane cyane na ROADM module (yuzuye na WSS switch), urebye igiciro kinini cya ROADM, OM / OD na OADM bikoreshwa mugukora imiyoboro yimpeta numuyoboro wa OTN.
Ku miyoboro ifunzwe (nk'imirongo miremire y'imirongo), ibyiza bya OTN ntabwo byanze bikunze bigaragarira byimazeyo bitewe na serivisi ziciriritse zagereranijwe hamwe nuburyo bwo kurinda, ariko haracyari ibyiza mubice bimwe na bimwe (imikorere yumuyoboro mwinshi iganisha ku giciro gito ugereranije gakondo WDM), umuyoboro wubu urimo ahanini ukoresha DWDM na OTN kumurongo urenze.
Kuri rezo yaho, kubera ko serivisi zigomba guhuzwa kenshi, imiterere y'urusobe ihindurwa kenshi kandi igenwa, kandi uburyo bwo kurinda bugomba guhinduka byoroshye, WDM gakondo igomba kuba idashobora kubikora.Ibyiza byo gukoresha imiyoboro ya OTN birigaragaza.
OTN itanga ubushobozi bwo kuyobora buri burebure kuri buri fibre, kandi OTN irashobora guhuza neza niterambere ryurusobe.
4 Kugereranya serivisi za DWDM na OTN
Icyifuzo cya OTN amashanyarazi yambukiranya ituruka kukigaragara cyumuvuduko umwe wa 10G.Iyo umuyoboro ugeze kuri 10G, OTU yayo irashobora gutwara 4 * 2.5G cyangwa 8 kugeza 9 GE;DWDM ifata ingingo-ku-buryo.Niba serivisi isaba ari nto, ishoramari rya OTU risa nkisesagura.Kugirango bigerweho, birakenewe kumenyekanisha ibikorwa byambukiranya bisa na SDH kuri DWDM, kugirango duhindure imikorere yumuriro wamashanyarazi wa OTN.
OTN ifite ubushobozi bwo kwambukiranya amashanyarazi, ni ukuvuga ubushobozi buke bwo kwambukiranya umuyoboro (cyane nka SDH).Mugihe kimwe, optique-ihuza-optique-ihuza amashanyarazi ntaho itaniye.Niba hari ubushobozi bwo guhuza optique ariko ntamashanyarazi uhuza, cyangwa amashanyarazi adafite aho ahurira, birashobora kwitwa OTN.
Bitewe nuburyo butandukanye muburyo bwo kubaka imiyoboro (ikiguzi, ibice bya serivise nicyerekezo gitemba), uburyo bwo guhuza amashanyarazi bukoreshwa cyane mubushinwa, kandi uburyo bwa optique bwambukiranya bukoreshwa mumahanga.
5 Umwanzuro
Binyuze mu isesengura no kugereranya byavuzwe haruguru, birashobora kugaragara ko OTN na DWDM bitandukanye cyane mubijyanye n'ikoranabuhanga no kubishyira mu bikorwa.Duhereye ku bushobozi bwo guhuza, guhuza serivisi no guhuza imiyoboro, OTN irakomeye cyane kandi irashobora guhuza neza ibikenewe na rezo ihuza ejo hazaza.
Bitewe no gukorera mu mucyo wa serivisi ya OTN ya sisitemu, ubushobozi bukomeye bwo gukosora amakosa, ubushobozi bwo guteganya ibyoroshye bya optique / amashanyarazi, ubushobozi bwo gucunga neza no gupima ubushobozi bwibikoresho (ibikoresho 80 * 100G ubu biracuruzwa), imiyoboro inyuranye itangiza Kwinjiza ibikoresho bya OTN bifite guhinduka byanze bikunze.
Igihe cyo kohereza: Ukwakira-25-2022