Nzira yekushandisa chiedza kuendesa ruzivo inogona kunzi ine nhoroondo refu.
"Beacon Tower" yemazuva ano yakabvumira vanhu kuti vaone nyore kwekutumira ruzivo kuburikidza nechiedza. Zvisinei, nzira iyi yekare yekutaurirana kwemaziso haina kunyatsojeka, inogumira pakureba kwekutumira ruzivo kunoonekwa nemaziso, uye kuvimbika kwayo hakuna kukwira. Nekuda kwezvinodiwa pakukura kwekutumira ruzivo rwemagariro evanhu, kuberekwa kwekutaurirana kwemaziso kwemazuva ano kwakawedzerwa.
Tanga tekinoroji yemazuva ano yekutaurirana kwemaziso
Muna 1800, Alexander Graham Bell akagadzira "foni yemagetsi".
Muna 1966, Gao Kun wekuBritain-wekuChina akapa pfungwa yekuti optical fiber transmission inokwanisa kufambiswa, asi panguva iyoyo kurasikirwa kwe optical fiber kwaisvika 1000dB/km.
Muna 1970, tsvakiridzo nekuvandudzwa kwetekinoroji yelaser ye quartz fiber ne semiconductor zvakaderedza kurasikirwa kwefiber kusvika pa20dB/km, uye simba relaser rakakwira, kuvimbika kwakasimba.
Muna 1976, kuenderera mberi kwekuvandudzwa kwetekinoroji ye optical fiber kwakaderedza kurasikirwa ne 0.47dB/km, zvichireva kuti kurasikirwa kwe transmission medium kwakanga kwagadziriswa, izvo zvakasimudzira kukura kwakasimba kwetekinoroji ye optical transmission.
Ongorora nhoroondo yekugadzirwa kwenetwork yekutumira
Network yekutumira magiya yave nemakore anopfuura makumi mana. Muchidimbu, yakasangana nePDH, SDH/MSTP,
Kuvandudzwa kwetekinoroji uye kuvandudzwa kweWDM/OTN nePeOTN muzvizvarwa.
Chizvarwa chekutanga che network dzemagetsi dzakashandisa tekinoroji yePDH (Plesiochronous Digital Hierarchy).
Chizvarwa chechipiri chinopa masevhisi ekuwana mawebhusaiti uye mitsara yakatsaurirwa yeTDM, vachishandisa tekinoroji yeSD (Synchronous Digital Hierarchy)/MSTP (Multi-Service Transport Platform).
Chizvarwa chechitatu chakatanga kutsigira kubatana kwemasevhisi evhidhiyo nenzvimbo dzedata, vachishandisa tekinoroji yeWDM (Wavelength Division Multiplexing, Wavelength Division Multiplexing)/OTN (Optical Transmission Network, Optical Transmission Network).
Chizvarwa chechina chinovimbisa vhidhiyo yepamusoro ye4K uye ruzivo rwemhando yepamusoro rwemhando yepamusoro, uchishandisa tekinoroji yePeOTN (Packet enhancedOTN, packet enhanced OTN).
Muchikamu chekutanga chekuvandudzwa kwezvizvarwa zviviri zvekutanga, kune masevhisi ezwi, Webhu Internet uye masevhisi eTDM private line, anomiririrwa neSDH/MSTP synchronous digital system technology, inotsigira ma interfaces akawanda akadai seEthernet, ATM/IMA, nezvimwewo, uye inogona kubatanidza CBR/VBR dzakasiyana. Isa masevhisi mumafuremu eSDH, bvisa mapombi akaomarara, uye tarisa masevhisi anomhanyisa zvishoma uye madiki.
Mushure mekupinda muchikamu chechitatu chekuvandudza, nekukura nekukurumidza kwesimba rekutaurirana, kunyanya masevhisi ekubatanidza mavhidhiyo nenzvimbo dzedata, bandwidth yenetwork yakawedzerwa. Tekinoroji ye optical layer inomiririrwa netekinoroji yeWDM inoita kuti fiber imwe ikwanise kutakura masevhisi akawanda. Kunyanya, tekinoroji yeDWDM (Dense Wavelength Division Multiplexing) yakashandiswa zvakanyanya muma network makuru ekufambisa ma network epamba, ichigadzirisa zvachose dambudziko rekutumira. Nyaya yedaro uye kugona kwebandwidth. Tichitarisa kukura kwekuvakwa kwenetwork, 80x100G yave chinhu chikuru pamitsetse ye trunk yedaro refu, uye network dzemunharaunda dze 80x200G uye network dzenzvimbo dzemaguta dzakakura nekukurumidza.
Pakutakura masevhisi akabatanidzwa akadai semavhidhiyo nemitsetse yakatsaurirwa, network yekufambisa iri pasi inoda kuchinjika uye hungwaru hwakawanda. Nokudaro, tekinoroji yeOTN inobuda zvishoma nezvishoma. OTN isystem itsva ye optical transmission technology inotsanangurwa neITU-T G.872, G.798, G.709 nedzimwe nzira. Inosanganisira chimiro chakakwana chesystem ye optical layer ne electrical layer, uye ine network dzinoenderana ne layer yega yega. Maitiro ekutarisa manejimendi uye nzira yekuchengetedza network. Tichitarisa kubva pamaitiro ekuvaka network yemuno, OTN yave chiyero che network dzekutumira, kunyanya mukuvaka network dzemuno dzevashandisi uye network dzemumaguta. Tekinoroji yeOTN yakavakirwa pa electrical layer crossover inonyanya kushandiswa, uye dhizaini yekuparadzanisa mutsetse webazi inoshandiswa. , Kuti uwane kupatsanurwa kwe side network ne side line, kuvandudza zvakanyanya kuchinjika kwe network uye kugona kuvhura nekukurumidza uye kutumira masevhisi.
Kushandurwa kwenetiweki yevatengesi inotarisana nebhizinesi
Kufambira mberi kwekuchinja kwedhijitari munzvimbo dzese dzehupfumi hwevanhu kwakaunza budiriro yakafanana yeindasitiri yese yeICT nehupfumi hwedhijitari, uye kwakasimudzira uye kwakakonzera shanduko huru muindasitiri. Nekuuya kwemakambani mazhinji matsva mumaindasitiri akamira, maindasitiri echinyakare nemamodeli ekushanda uye mamodeli ebhizinesi ari kugara achigadziriswazve, anosanganisira: mari, nyaya dzehurumende, kurapwa, dzidzo, maindasitiri nedzimwe nzvimbo. Tichitarisana nekudiwa kuri kuwedzera kwekubatana kwebhizinesi remhando yepamusoro uye rakasiyana, tekinoroji yePeOTN yakatanga kushandiswa zvakanyanya zvishoma nezvishoma.
·Matanda eL0 neL1 anopa mapaipi akaomarara "akaoma" anomiririrwa newavelength λ uye sub-channel ODUk. bandwidth yakakura uye kunonoka kushoma ndizvo zvakanakira zvayo zvikuru.
·L2 layer inogona kupa pombi "yakapfava" inochinjika. Bandwidth yepombi inoenderana zvizere nebasa uye inochinja nekuchinja kwetraffic yebasa. Kuchinjika uye kana uchida ndizvo zvakanakira zvikuru.
Kubatanidza zvakanakira zveSDH/MSTP/MPLS-TP pakutakura masevhisi madiki, kugadzira mhinduro yenetiweki yekufambisa yeL0+L1+L2, kuvaka chikuva chekutakura chine masevhisi akawanda chePeOTN, kugadzira kugona kwakazara kwekutakura kune kugona kwakasiyana-siyana mune network imwe chete. Muna 2009, ITU-T yakawedzera kugona kwekutumira kweOTN kutsigira masevhisi akasiyana-siyana uye yakaisa zviri pamutemo PeOTN muchiyero.
Mumakore achangopfuura, vashandi vepasi rose vakaedza nepavanogona napo mumusika wemakambani ehurumende nemakambani. Vashandi vatatu vakuru vemuno vari kushingaira kugadzira network yehurumende nemakambani ehurumende yeOTN. Makambani ematunhu akaisawo mari yakawanda. Kusvika pari zvino, vashandi vemakambani ematunhu vanopfuura makumi matatu vakavhura OTN. Network yemakambani epamusoro-soro, uye vakaburitsa zvigadzirwa zvemakambani epamusoro-soro zvinoenderana nePeOTN, kusimudzira network yekufambisa optical kubva ku "basic resource network" kuenda ku "business bearer network."
Nguva yekutumira: Mbudzi-04-2021