Enwere ike ịsị ụzọ eji ọkụ na-ebufe ozi nwere ogologo akụkọ ihe mere eme.
Ụlọ elu "Beacon Tower" nke oge a emeela ka ndị mmadụ nweta ohere nke ịnyefe ozi site na ìhè.Otú ọ dị, usoro nkwurịta okwu ngwa anya nke oge ochie a dịtụ azụ azụ, na-ejedebe site na ebe nnyefe anya na anya gba ọtọ, na ntụkwasị obi adịghịkwa elu.Site na mkpa mmepe nke mgbasa ozi mgbasa ozi ọha na eze, ọmụmụ nke nkwurịta okwu anya nke oge a ka akwalitekwuru.
Malite teknụzụ nzikọrịta ozi anya ọgbara ọhụrụ
Na 1800, Alexander Graham Bell chepụtara "ekwentị ngwa anya".
Na 1966, British-Chinese Gao Kun tụpụtara echiche nke nnyefe eriri anya, mana n'oge ahụ mfu nke eriri anya dị elu dị ka 1000dB / km.
N'afọ 1970, nyocha na mmepe nke quartz fiber na teknụzụ laser semiconductor belatara ụkọ fiber na 20dB / km, na ike laser dị elu, ntụkwasị obi siri ike.
N'afọ 1976, ọganihu na-aga n'ihu nke nkà na ụzụ fiber optic na-ebelata mfu site na 0.47dB/km, nke pụtara na a edoziwo mfu nke usoro mgbasa ozi, nke kwalitere ọganihu siri ike nke teknụzụ mgbasa ozi anya.
Nyochaa akụkọ mmepe nke netwọk mgbasa ozi
Netwọk mgbasa ozi agafeela ihe karịrị afọ iri anọ.Na nchịkọta, ọ nwetala PDH, SDH/MSTP,
Mmepe teknụzụ na mmepụta ọgbọ nke WDM/OTN na PeOTN.
Ọgbọ mbụ nke netwọk wired iji nye ọrụ olu nakweere teknụzụ PDH (Plesiochronous Digital Hierarchy).
Ọgbọ nke abụọ na-enye ọrụ ịnweta Weebụ yana ahịrị raara onwe ya nye TDM, na-eji teknụzụ SD (Synchronous Digital Hierarchy)/MSTP (Multi-Service Transport Platform).
Ọgbọ nke atọ malitere ịkwado njikọ nke ọrụ vidiyo na ebe data, na-eji teknụzụ WDM (Wavelength Division Multiplexing, Wavelength Division Multiplexing) / OTN (Optical Transmission Network, Optical Transmission Network).
Ọgbọ nke anọ na-ekwe nkwa vidiyo nkọwa dị elu 4K yana ahụmịhe ahịrị nkeonwe dị mma, na-eji teknụzụ PeOTN (Packet enhancedOTN, pack enhanced OTN) teknụzụ.
N'oge mmalite mmepe nke ọgbọ abụọ mbụ, maka ọrụ olu, ịntanetị ịntanetị na ọrụ TDM nkeonwe, nke SDH/MSTP na-anọchite anya teknụzụ dijitalụ synchronous, ọ na-akwado ọtụtụ oghere dị ka Ethernet, ATM/IMA, wdg, na nwere ike jikọọ CBR/VBR dị iche iche.Weghachite ọrụ n'ime okpokolo agba SDH, kewapụ ọkpọkọ siri ike n'ụzọ anụ ahụ, ma lekwasị anya na ọrụ dị obere na obere uru.
Mgbe ịbanye n'ọgbọ mmepe nke ọgbọ nke atọ, na-enwe ọganihu ngwa ngwa nke ikike ọrụ nkwurịta okwu, karịsịa ọrụ ntanetị vidiyo na data center, bandwidth netwọk emeela ngwa ngwa.Teknụzụ oyi akwa anya nke teknụzụ WDM nọchitere anya na-eme ka o kwe omume otu eriri ibu ọrụ karịa.Karịsịa, a na-eji teknụzụ DWDM (Dense Wavelength Division Multiplexing) mee ihe na netwọk mgbasa ozi na-arụ ọrụ ụlọ, na-edozi nsogbu nke nnyefe kpamkpam.Okwu nke anya na ike bandwit.N'ileghachi anya na ọnụ ọgụgụ nke iwu netwọk, 80x100G aghọwo ihe bụ isi na ahịrị okporo osisi dị anya, na netwọk mpaghara 80x200G na netwọk mpaghara mepere emepe ngwa ngwa.
Maka ibu ọrụ agbakwunyere dị ka vidiyo na ahịrị raara onwe ya nye, netwọk ụgbọ njem dị n'okpuru chọrọ mgbanwe na ọgụgụ isi karịa.Ya mere, teknụzụ OTN ji nwayọọ nwayọọ pụta.OTN bụ usoro teknụzụ mgbasa ozi ngwa anya ọhụrụ nke ITU-T G.872, G.798, G.709 na ụkpụrụ ndị ọzọ kọwapụtara.Ọ na-agụnye usoro usoro zuru ezu nke oyi akwa anya na oyi akwa eletrik, ma nwee netwọk kwekọrọ maka oyi akwa ọ bụla.Usoro nlekota oru na usoro ịlanarị netwọkụ.Na-ekpe ikpe site na usoro iwu ụlọ netwọk ugbu a, OTN abụrụla ọkọlọtọ maka netwọk mgbasa ozi, karịsịa n'ịrụ ụlọ ọrụ netwọk mpaghara na netwọk obodo mepere emepe.A nakweere teknụzụ OTN dabere na crossover elektrọnik, a na-ejikwa ụkpụrụ nkewa ahịrị alaka., Iji nweta nkwụsị nke akụkụ netwọk na akụkụ ahịrị, na-eme ka mgbanwe nke netwọk dịkwuo mma na ike ịmeghe ngwa ngwa na itinye ọrụ.
Mgbanwe netwọk ndị na-ebu ọrụ dabere na azụmahịa
Mmụbawanye nke mgbanwe dijitalụ n'akụkụ niile nke akụ na ụba ọha mmadụ emeela ka mmepe yiri nke ụlọ ọrụ ICT dum na akụnụba dijitalụ, ma kwalite ma kpalite mgbanwe dị ukwuu na ụlọ ọrụ ahụ.Site na nbata nke ọnụ ọgụgụ dị ukwuu nke ụlọ ọrụ ọhụrụ na ụlọ ọrụ kwụ ọtọ, a na-ewughachi ụlọ ọrụ ọdịnala na ụdị arụ ọrụ na ụdị azụmaahịa, gụnyere: ego, ihe gbasara gọọmentị, nlekọta ahụike, agụmakwụkwọ, ụlọ ọrụ na mpaghara ndị ọzọ.N'ịche ihu na-abawanye ụba maka njikọ azụmahịa dị elu yana dị iche iche, teknụzụ PeOTN ejirila nke nta nke nta malite iji ya mee ihe.
L0 na L1 n'ígwé na-enye ọkpọkọ siri ike "ike" nọchiri anya wavelength λ na sub-channel ODUk.Nnukwu bandwit na obere igbu oge bụ isi uru ya.
· Igwe L2 nwere ike inye ọkpọkọ "dị nro" na-agbanwe agbanwe.bandwit nke ọkpọkọ na-ejikọta ya na ọrụ ahụ ma gbanwee na mgbanwe nke okporo ụzọ ọrụ.Mgbanwe na ihe achọrọ bụ isi uru ya.
Ịmekọrịta uru nke SDH / MSTP / MPLS-TP maka ibu ọrụ obere ihe, na-emepụta ngwọta netwọk ụgbọ njem L0 + L1 + L2, na-ewu ụlọ ọrụ ụgbọ njem dị iche iche PeOTN, na-emepụta ikike ibu zuru oke na ọtụtụ ikike n'otu netwọk.N'afọ 2009, ITU-T gbasaa ikike nnyefe nke OTN iji kwado ọrụ dịgasị iche iche ma tinyekwa PeOTN n'ihu ọha n'ime ọkọlọtọ.
N'ime afọ ndị na-adịbeghị anya, ndị na-arụ ọrụ n'ụwa niile agbaala mbọ n'ahịa ahịrị onwe nke gọọmentị-ụlọ ọrụ.Ndị isi atọ ndị na-ahụ maka ụlọ na-arụsi ọrụ ike na-emepe emepe OTN gọọmentị na ụlọ ọrụ netwọọdụ nkeonwe.Ụlọ ọrụ ndị dị n'ógbè etinyewokwa nnukwu ego.Ka ọ dị ugbu a, ihe karịrị ndị ọrụ ụlọ ọrụ mpaghara 30 emepeela OTN.Netwọk nkeonwe dị oke elu, yana ewepụtara ngwaahịa ahịrị nzuzo dị elu dabere na PeOTN, iji kwalite netwọk njem anya site na “netwọk akụrụngwa akụrụngwa” gaa na “netwọk ndị na-ebu azụmahịa.”
Oge nzipu: Nov-04-2021