1. Yini i-XGS-PON?
KokubiliI-XG-PONfuthi i-XGS-PON ingeye-I-GPONuchungechunge. Kusukela kumephu yomgwaqo wobuchwepheshe, i-XGS-PON iwukuvela kobuchwepheshe be-XG-PON.
Kokubili i-XG-PON ne-XGS-PON yi-10G PON, umehluko omkhulu uthi: I-XG-PON i-asymmetric PON, izinga lokukhuphuka/lokwehlisa lembobo ye-PON ngu-2.5G/10G; I-XGS-PON i-PON elinganayo, izinga lokuxhuma phezulu/lokwehlisa imbobo ye-PON Izinga ngu-10G/10G.
Ubuchwepheshe be-PON obuyinhloko obusetshenziswayo njengamanje yi-GPON ne-XG-PON, zombili eziyi-PON e-asymmetric. Njengoba idatha yomsebenzisi ekhuphukayo/eya phansi ngokuvamile i-asymmetrical, uthatha idolobha elithile lesigaba sokuqala njengesibonelo, isilinganiso sethrafikhi esikhuphuka nomfula se-OLT singama-22% kuphela wethrafikhi engezansi. Ngakho-ke, izici zobuchwepheshe ze-asymmetric PON zihlobene nezidingo zabasebenzisi. fanisa. Okubaluleke nakakhulu, izinga le-uplink le-PON ye-asymmetric liphansi, izindleko zokuthumela izingxenye ezifana nama-lasers ku-ONU ziphansi, futhi intengo yesisetshenziswa iphansi ngokulinganayo.
Nokho, izidingo zabasebenzisi zihlukahlukene. Ngokukhula kokusakaza bukhoma nezinsizakalo zokubhekwa kwevidiyo, kunezimo eziningi lapho abasebenzisi benaka kakhulu umkhawulokudonsa we-uplink. Imigqa ezinikele engaphakathi idinga ukunikeza amasekhethi akhuphukayo/we-downlink alinganayo. Lawa mabhizinisi akhuthaza isidingo se-XGS-PON.
2. Ukuhlalisana kwe-XGS-PON, XG-PON kanye ne-GPON
I-XGS-PON iwukuvela kobuchwepheshe be-GPON ne-XG-PON, futhi isekela ukufinyelela okuxubile kwezinhlobo ezintathu zama-ONU: i-GPON, i-XG-PON ne-XGS-PON.
2.1 Ukuhlala ndawonye kwe-XGS-PON ne-XG-PON
Njenge-XG-PON, i-downlink ye-XGS-PON isebenzisa indlela yokusakaza, futhi i-uplink isebenzisa indlela ye-TDMA.
Njengoba ubude bezansi bomfula kanye nezinga eliphansi lomfula le-XGS-PON ne-XG-PON ziyafana, umfula ongezansi we-XGS-PON awuhlukanisi phakathi kwe-XGS-PON ONU ne-XG-PON ONU, futhi isihlukanisi esibonakalayo sisakaza isignali yokubona eya phansi komfula isixhumanisi esifanayo se-ODN Ku-XG(S)-PON ngayinye (XG-PON ne-XGS-PON) ONU, i-ONU ngayinye ikhetha ukwamukela isignali yayo futhi ilahle ezinye izimpawu.
I-uplink ye-XGS-PON yenza ukudluliswa kwedatha ngokuya ngezikhala zesikhathi, futhi i-ONU ithumela idatha ezindaweni ezivunyelwe yi-OLT. I-OLT yabela izikhathi ngezikhathi ngokuvumelana nezidingo zethrafikhi zama-ONU ahlukene kanye nohlobo lwe-ONU (ingabe i-XG-PON noma i-XGS-PON?). Esikhathini esabelwe i-XG-PON ONU, izinga lokudluliswa kwedatha ngu-2.5Gbps; esikhaleni sesikhathi esabelwe i-XGS-PON ONU, izinga lokudluliswa kwedatha ngu-10Gbps.
Kuyabonakala ukuthi i-XGS-PON isekela ngokwemvelo ukufinyelela okuxubile ngezinhlobo ezimbili zama-ONU, i-XG-PON ne-XGS-PON.
2.2 Ukuhlalisana kwe-XGS-PON kanyeI-GPON
Njengoba i-uplink/downlink wavelength ihlukile kweye-GPON, i-XGS-PON isebenzisa isisombululo se-Combo ukwabelana nge-ODN ne-GPON. Ukuze uthole umgomo wesixazululo se-Combo, bheka isihloko esithi “Ingxoxo ngesixazululo sokuthuthukisa ukusetshenziswa kwensiza ye-XG-PON yeBhodi yababhalisile be-Combo”.
I-Combo optical module ye-XGS-PON ihlanganisa i-GPON optical module, i-XGS-PON optical module kanye ne-WDM multiplexer.
Ekuqondeni komfula, ngemva kokuba isignali ye-optical ingena echwebeni le-XGS-PON Combo, i-WDM ihlunga isignali ye-GPON kanye nesignali ye-XGS-PON ngokuvumelana nobude be-wavelength, bese ithumela isignali eziteshini ezahlukene.
Esiqondisweni se-downlink, amasignali asuka esiteshini se-GPON kanye nesiteshi se-XGS-PON aphindwaphindwa nge-WDM, futhi isignali exubile yehliswa ku-ONU nge-ODN. Njengoba ama-wavelength ehlukene, izinhlobo ezahlukene zama-ONU zikhetha ubude obudingekayo ukuze bathole amasignali ngezihlungi zangaphakathi.
Njengoba i-XGS-PON isekela ngokwemvelo ukuphilisana ne-XG-PON, isixazululo se-Combo se-XGS-PON sisekela ukufinyelela okuxubile kwe-GPON, XG-PON kanye ne-XGS-PON izinhlobo ezintathu zama-ONU. Imojula ye-Combo optical ye-XGS-PON ibizwa nangokuthi imojuli ye-Mode Combo optical emithathu (imojuli ye-Combo ye-XG-PON ibizwa ngokuthi imojuli ye-Combo optical yemodi ezimbili ngoba isekela ukufinyelela okuxubile kwe-GPON ne-XG-PON izinhlobo ezimbili zama-ONU).
3. Isimo Semakethe
Ithintwa izindleko zemishini nokuvuthwa kwezisetshenziswa, intengo yamanje yesisetshenziswa se-XGS-PON iphezulu kakhulu kunaleyo ye-XG-PON. Phakathi kwazo, inani leyunithi le-OLT (kuhlanganise nebhodi labasebenzisi be-Combo) lingaphezulu ngo-20%, futhi intengo yeyunithi ye-ONU ingaphezulu kuka-50%.
Nakuba imigqa ezinikele engena ngaphakathi idinga ukunikeza amasekhethi alinganisayo akhuphukayo/okwehliswayo, ithrafikhi yangempela yemigqa eminingi ezinikele eningi engenayo isabuswa ukuziphatha okulandelayo. Nakuba kunezimo eziningi lapho abasebenzisi benaka kakhulu umkhawulokudonsa we-uplink, cishe azikho izimo zezinsizakalo ezingenakufinyelelwa nge-XG-PON kodwa kufanele zifinyelelwe nge-XGS-PON.
Isikhathi sokuthumela: Apr-12-2023