DWDM na OTN ni sisitemu ebyiri za tekiniki zakozwe n'ikoranabuhanga ryo kohereza amakuru mu myaka ya vuba aha: DWDM ishobora gufatwa nka PDH yabanje (gutanga amakuru ku ngingo), kandi serivisi zo kuri interineti no hanze ya interineti zirangizwa kuri ODF binyuze mu majwi akomeye; OTN ni nka SDH (ubwoko butandukanye bwa Networking), ifite imikorere yo guhuza amakuru (yaba ari uguhuza amakuru ku urwego rw'amashanyarazi cyangwa urwego rw'amajwi).
Bitewe n’uko gahunda ya ALL IP ikomeje kwihutishwa, ubu, hatitawe ku mugongo w’igihugu, umugongo w’intara cyangwa sisitemu ya WDM y’aho uherereye, OTN ni yo ikoreshwa cyane mu guhitamo ibikoresho mu ntangiriro z’inyubako z’umuyoboro. Ibikoresho bya OTN byagiye bisimbura buhoro buhoro ibikoresho bya DWDM hamwe n’inyungu zabyo zidasanzwe (Nk’ibikoresho bya SDH bisimbura ibikoresho bya PDH). Nk’ikoranabuhanga rishya n’uburyo bushya bw’ibicuruzwa, OTN yabaye intego y’inganda ziriho ubu. Iyi nkuru izasesengura kandi igereranye ibikoresho bya DWDM, ibikoresho bya OTN n’ikoranabuhanga.
1 Ibitekerezo by'ibanze bya DWDM na OTN
Hamwe n'impinduka mu bisabwa kuri serivisi n'ubugari bw'ibipimo, ni ngombwa kongeramo serivisi z'ubugari bw'ibipimo binini binyuze mu migozi y'urumuri (fibre imwe cyangwa fibre ebyiri) hanyuma ukazigabanyamo imigozi itandukanye kugira ngo zoherezwe kure. Ikoranabuhanga ryo gutandukanya ubugari bw'ubugari ry'ibipimo rigaragara uko ibihe bigenda bisimburana.
DWDM ni uburyo bwo gukwirakwiza uburebure bw'umurambararo (Wavelength Division Multiplexing), butuma ibimenyetso by'urumuri bitandukanye by'uburebure bw'umurambararo bihinduka fibre imwe kugira ngo byoherezwe. Ikoranabuhanga rya WDM ni ikoranabuhanga risanzwe rigezweho ryo gukwirakwiza uburebure bw'umurambararo mu gihe cy'imyaka irenga icumi. Rishobora kugabanywamo ibintu bibiri: sparse wavelength division multiplexing (CWDM), ifite interval nini y'uburebure (20nm); dense wavelength division multiplexing (DWDM), ifite interval nto y'uburebure (munsi cyangwa ingana na 0.8nm). Bitewe n'intera ngufi ya CWDM yo gukwirakwiza, umubare munini w'ibikoresho bya DWDM bishyirwa mu miyoboro isanzwe yo gukwirakwiza uburebure bw'ibikoresho bitandukanye.
Sisitemu ya DWDM ifunguye igizwe n'ibi bikurikira: OTM irangiza gupakira no gupakurura serivisi kuri sitasiyo ya optique line terminal, OA irangiza gutunganya optique relay amplification pure y'ikimenyetso cya multiplexed kuri sitasiyo ya optique line amplification, naho OTU irangiza urumuri rw'ikimenyetso cya wavelength rudasanzwe kugira ngo ruhuze n'imikorere ya G.694.1 (2) ya wavelength ya wavelength ya wavelength ya wavelength, OMU/ODU: irangiza multiplexing/demultiplexing ya G.694.1 (2) fixed wavelength signal light, OBA (power amplifier) inoza imbaraga z'ikimenyetso cya optique gihujwe hiyongeraho , bityo yongera imbaraga z'urumuri rwa buri wavelength, na OPA (pre-amplification) inoza uburyo bwo kwakira buri wavelength hiyongeraho imbaraga z'urumuri rwa wavelength ya input multiplexed.
OTN ni Umuyoboro w’Ikoranabuhanga ryo Gutwara Ibimenyetso (Umuyoboro w’Ikoranabuhanga ryo Gutwara Ibimenyetso), uzwi kandi nka OTH (Urwego rw’Ikoranabuhanga ryo Gutwara Ibimenyetso) muri ITU-T. Yakozwe hashingiwe ku igabanywa ry’uburebure gakondo kandi ihuza ibyiza bya DWDM na SDH. Ihuza ibyiza byo gutunganya imiterere y’amashanyarazi n’iy’amashanyarazi, itanga ubushobozi bwo kohereza ubutumwa bwinshi, guhuza uburebure bw’umurambararo/ubugari bw’umurambararo kuva ku mpera kugeza ku mpera ndetse no kurinda urwego rw’ikoranabuhanga, kandi ni ikoranabuhanga ryiza cyane ryo kohereza serivisi za interineti nini. Mu myaka itanu ishize, abakora ibikoresho bya OTN bakoresheje ibikoresho byinshi mu miyoboro itandukanye yo kohereza ubutumwa.
2 Kugereranya imiterere ya tekiniki ya DWDM na OTN
Nubwo sisitemu ya DWDM irushaho kunoza cyane imikorere y’imigozi ya optique kandi igashyigikira kohereza serivisi nini, bitewe n’uko ikoranabuhanga ryo kugabanya umuvuduko w’ubunini bw ...
OTN iragwa imikorere ya DWDM ifite ubushobozi bwinshi bwo kohereza amakuru kandi ifite ubushobozi bwo guteganya no kurinda amakuru. Binyuze mu gutangiza ikoranabuhanga rya ROADM, ikoranabuhanga rya OTH, G.709 encapsulation na control plane, ikemura ikibazo cy'imiyoboro ya WDM isanzwe idafite ubushobozi bwo guteganya serivisi y'uburebure bw'umuraba/ubugari bw'umuraba. , Ubushobozi buke bwo guhuza amakuru, ubushobozi buke bwo kurinda amakuru n'ibindi bibazo. Urwego rw'amashanyarazi rushyira mu bikorwa gahunda ishingiye ku burebure bw'umuraba (nka GE, 2.5G, 10G, 40G, 100G particles), kandi gahunda y'urwego rw'umuraba ishingiye ahanini ku burebure bwa 10G, 40G cyangwa 100G, hamwe n'ikoreshwa ry'umurambararo mwinshi; ifite byte nyinshi zo hejuru, kandi OAM yayo imikorere ya /P irakomeye kurusha WDM.
Byongeye kandi, OTN na DWDM bishobora gukoreshwa mu buryo buhuriweho ku gice cy’ikoranabuhanga, itandukaniro ni uko OTN ifite igice cy’ikoranabuhanga gikoresha amashanyarazi. Kubwibyo, bimwe mu bikoresho bya DWDM biri kuri network isanzwe byongerwaho hamwe n’uduce tw’ikoranabuhanga duhuza ikoranabuhanga hanyuma bikavugururwa bikaba OTN.
3 Kugereranya DWDM na OTN networking
Imiyoboro ivanze ya OTN na DWDM izatakaza ibyiza bya OTN (imiterere y'ishusho itandukanye na WDM isanzwe, kandi isano izagira ingaruka).
Kubera ko OTN optique cross-connect ishyirwa mu bikorwa cyane cyane na ROADM module (ifite switch ya WSS), ukurikije igiciro kiri hejuru cya ROADM, OM/OD na OADM bikoreshwa mu gukora network ya ring na chain network muri OTN networking.
Ku miyoboro ihambiriye (nk'imiyoboro miremire ikoreshwa mu miyoboro), ibyiza bya OTN ntibigaragara neza bitewe na serivisi zihoraho n'uburyo bwo kurinda, ariko hari ibyiza bimwe na bimwe (imikorere myiza y'imiyoboro ituma ibiciro bigabanuka ugereranyije na WDM isanzwe), imiyoboro ikoreshwa mu miyoboro ikoreshwa cyane ikoresha DWDM na OTN mu miyoboro ikoreshwa mu miyoboro.
Ku muyoboro w’itumanaho wo mu gace ukoreramo, kubera ko serivisi zigomba guhuzwa kenshi, imiterere y’umuyoboro ihora ihinduka kandi igashyirwaho gahunda, kandi uburyo bwo kurinda bugomba guhinduka mu buryo bworoshye, WDM isanzwe igomba kuba idashobora kubikora. Ibyiza byo gukoresha umuyoboro wa OTN biragaragara.
OTN itanga ubushobozi bwo gucunga buri muyoboro w'amazi kuri buri fibre, kandi OTN ishobora kwimenyereza neza iterambere ry'umuyoboro mu gihe kizaza.
4 Kugereranya serivisi za DWDM na OTN Bearer
Ubusabe bwa OTN electromagnetic crossover buturuka ku kugaragara kw'igipimo cya 10G cy'umuraba umwe. Iyo umuyoboro ugeze kuri 10G, OTU yawo ishobora gutwara 4 * 2.5G cyangwa 8 kugeza kuri 9 GE; DWDM ikoresha uburyo bwo gufata umurongo umwe. Iyo serivisi ikenewe ari nto, ishoramari rya OTU risa nkaho ari ubusa. Kugira ngo bigerweho, ni ngombwa gushyiraho imikorere ya cross-connect isa na SDH kuri DWDM, kugira ngo habeho imikorere ya cross-connect ya OTN.
OTN ifite ubushobozi bwo guhuza amashanyarazi, ni ukuvuga ubushobozi bwo guhuza amashanyarazi mu buryo buciriritse kuri buri muyoboro (nk'uko SDH imeze). Muri icyo gihe, guhuza amashanyarazi mu buryo bufatika n'imikoranire y'amashanyarazi mu buryo bufatika ntibigira aho bihurira. Iyo hari ubushobozi bwo guhuza amashanyarazi mu buryo bufatika ariko nta guhuza amashanyarazi mu buryo bufatika, cyangwa guhuza amashanyarazi mu buryo budafite isano, ishobora kwitwa OTN.
Bitewe n'itandukaniro ry'uburyo bwo kubaka umuyoboro w'itumanaho (igiciro, ibice bya serivisi n'icyerekezo cy'umuyoboro w'amashanyarazi), uburyo bwo gukwirakwiza amashanyarazi bukoreshwa cyane mu Bushinwa, naho uburyo bwo gukwirakwiza amashanyarazi bukoreshwa cyane mu mahanga.
5 Umwanzuro
Binyuze mu isesengura n'igereranya ryavuzwe haruguru, bigaragara ko OTN na DWDM bitandukanye cyane mu bijyanye n'ikoranabuhanga n'ikoreshwa ryabyo. Ukurikije ubushobozi bwo guhuza, ubunini bwa serivisi no koroshya imikoranire, OTN ifite imbaraga nyinshi kandi ishobora guhaza neza ibyo ikeneye mu gihe kizaza.
Bitewe n'uburyo serivisi ya OTN itangwa mu mucyo, ubushobozi bukomeye bwo gukosora amakosa, ubushobozi bwo gushyira mu bikorwa gahunda y'amashanyarazi mu buryo bworoshye, ubushobozi bwo gucunga ibikorwa byo kubungabunga no kwagura ubushobozi bw'ibikoresho (ibikoresho bya 80 * 100G ubu biracuruzwa), imiyoboro itandukanye yo kohereza amakuru. Gushyiraho ibikoresho bya OTN byabaye ngombwa.
Igihe cyo kohereza: 25 Ukwakira 2022