Tare da ƙaruwar yawan ayyukan da Passive Optical Networks (PON) ke gudanarwa, ya zama mahimmanci a dawo da ayyuka cikin sauri bayan gazawar layi. Fasahar canza kariyar PON, a matsayin babbar mafita don tabbatar da ci gaba da kasuwanci, tana inganta amincin hanyar sadarwa sosai ta hanyar rage lokacin katsewar hanyar sadarwa zuwa ƙasa da 50ms ta hanyar hanyoyin aiki masu wayo.
Ma'anarPONSauya kariya shine tabbatar da ci gaban kasuwanci ta hanyar tsarin hanyoyi biyu na "babban+kwafin ajiya".
An raba tsarin aikinsa zuwa matakai uku: na farko, a matakin ganowa, tsarin zai iya gano karyewar fiber ko gazawar kayan aiki daidai cikin 5ms ta hanyar haɗakar sa ido kan wutar lantarki, nazarin ƙimar kuskure, da saƙonnin bugun zuciya; A lokacin lokacin sauyawa, ana kunna aikin sauyawa ta atomatik bisa ga dabarun da aka riga aka tsara, tare da jinkirin sauyawa na yau da kullun wanda aka sarrafa a cikin 30ms; A ƙarshe, a cikin lokacin dawowa, ana samun ƙaura mara matsala na sigogin kasuwanci 218 kamar saitunan VLAN da rarraba bandwidth ta hanyar injin daidaitawa, yana tabbatar da cewa masu amfani na ƙarshe ba su san komai ba.
Bayanan da aka tattara sun nuna cewa bayan an yi amfani da wannan fasahar, tsawon lokacin katsewar hanyoyin sadarwa na PON na shekara-shekara za a iya rage shi daga awanni 8.76 zuwa daƙiƙa 26, kuma ana iya inganta aminci da sau 1200. Manyan hanyoyin kariya na PON na yanzu sun haɗa da nau'ikan guda huɗu, Nau'in A zuwa Nau'in D, waɗanda ke samar da cikakken tsarin fasaha daga asali zuwa na zamani.
Nau'in A (Trunk Fiber Redundancy) ya rungumi ƙirar tashoshin PON guda biyu a kan kwakwalwan MAC na gefe na OLT. Yana kafa hanyar haɗin fiber optic ta farko da ta madadin ta hanyar mai raba 2: N kuma yana sauya tsakanin 40ms. Kudin canza kayan aikinsa yana ƙaruwa da kashi 20% kawai na albarkatun fiber, wanda hakan ya sa ya dace musamman ga yanayin watsawa na ɗan gajeren lokaci kamar hanyoyin sadarwa na harabar jami'a. Duk da haka, ya kamata a lura cewa wannan tsarin yana da iyakoki akan allon ɗaya, kuma gazawar maki ɗaya na mai raba na iya haifar da katsewar haɗin biyu.
Mafi ci gaba na Type B (OLT port redundancy) yana tura tashoshin jiragen ruwa guda biyu na kwakwalwan MAC masu zaman kansu a gefen OLT, yana tallafawa yanayin madadin sanyi/dumi, kuma ana iya faɗaɗa shi zuwa tsarin mai masaukin baki guda biyu a fadin OLTs.FTTHGwajin yanayi, wannan mafita ta cimma ƙaura mai daidaitawa na ONUs 128 cikin 50ms, tare da asarar fakiti na 0. An yi amfani da shi cikin nasara ga tsarin watsa bidiyo na 4K a cikin hanyar sadarwa ta watsa shirye-shirye da talabijin ta lardi.
Nau'in C (cikakken kariyar zare) ana amfani da shi ta hanyar tura hanyoyin zare biyu na baya/rarraba, tare da ƙirar na'urar gani ta ONU guda biyu, don samar da kariya daga ƙarshe zuwa ƙarshe ga tsarin ciniki na kuɗi. Ya cimma nasarar dawo da kurakurai 300ms a gwajin damuwa na musayar hannun jari, wanda ya cika ƙa'idar juriyar katsewa ta ƙasa da dakika na tsarin ciniki na tsaro.
Mafi girman matakin Nau'in D (cikakken madadin zafi na tsarin) ya rungumi ƙirar matakin soja, tare da tsarin sarrafawa biyu da tsarin jirgin sama biyu don duka OLT da ONU, yana tallafawa sake amfani da fiber/tashar jiragen ruwa/ wutar lantarki mai matakai uku. Wani lamari na tura hanyar sadarwa ta tashar tushe ta 5G ya nuna cewa mafita har yanzu tana iya kiyaye aikin sauyawa na matakin 10ms a cikin mawuyacin yanayi na -40 ℃, tare da lokacin katsewa na shekara-shekara da aka sarrafa cikin daƙiƙa 32, kuma ya wuce takardar shaidar soja ta MIL-STD-810G.
Domin cimma nasarar sauyawa ba tare da wata matsala ba, dole ne a shawo kan manyan ƙalubale guda biyu na fasaha:
Dangane da daidaitawar tsari, tsarin yana amfani da fasahar daidaitawar bambanci don tabbatar da cewa sigogi 218 masu tsauri kamar manufofin VLAN da QoS sun daidaita. A lokaci guda, yana daidaita bayanai masu ƙarfi kamar teburin adireshin MAC da hayar DHCP ta hanyar tsarin sake kunnawa cikin sauri, kuma yana gadon maɓallan tsaro ba tare da wata matsala ba bisa ga tashar ɓoyewa ta AES-256;
A cikin matakin dawo da sabis, an tsara tsarin garanti sau uku - ta amfani da tsarin ganowa mai sauri don matse lokacin yin rijistar ONU zuwa cikin daƙiƙa 3, tsarin magudanar ruwa mai wayo wanda ya dogara da SDN don cimma daidaitaccen jadawalin zirga-zirga, da kuma daidaita sigogi masu girma dabam-dabam ta atomatik kamar ƙarfin gani/jinkiri.
Lokacin Saƙo: Yuni-19-2025