Ubuchwepheshe be-PON bebulokhu bunamandla okuzisungula kabusha futhi buvumelane nezidingo zemakethe entsha. Kusukela kujubane lokurekhoda ukuya kusilinganiso sebhithi yesilinganiso esikabili kanye nama-lambda amaningi, i-PON ibilokhu “iyiqhawe” le-broadband, evumela ukwamukelwa nokusebenza kwezinsizakalo ezintsha. Ukukhuthazwa kwebhizinisi kungenzeka.
Njengoba inethiwekhi ye-5G iqala ukwakha, indaba ye-PON iphinde ivule ikhasi elisha.Kulokhu, ubuchwepheshe be-PON besizukulwane esilandelayo busebenzisa i-paradigm entsha ukuze kuzuzwe umthamo ophezulu ngokuphumelelayo.I-25G PON izosebenzisa i-ecosystem yesikhungo sedatha, kunokuba isistimu yokudlulisa esetshenziswa emlandweni wobuchwepheshe be-PON, emele isigaba esilandelayo se-fiber evolution, isici esisha endabeni ye-PON.
Ukusebenza kwezindleko kuyisihluthulelo
Kunezidingo ezimbili zokuphumelela kobuchwepheshe bokufinyelela: ukusebenza kahle kwezindleko kanye nesidingo semakethe. Ekusetshenzisweni kwenethiwekhi enkulu yokufinyelela, eyokuqala iwukhiye. Ukusebenzisa i-ecosystem efakazelwe kanye nobuchwepheshe be-optical bezinga eliphezulu kungasiza ekufinyeleleni ukonga kwezindleko kuyilapho kuthuthukiswa ukusebenza kahle kwezindleko okusekelwe ocwaningweni nasekusunguleni izinto ezintsha.
Ngakho-ke, impumelelo yezohwebo ye-25G PON izoncika emandleni ayo okunikeza izikhathi ezingu-2.5 ngaphezulu komkhawulokudonsa kune-10G PON ngezindleko eziphansi. Ngenhlanhla, i-25G PON inendlela engabizi kakhulu yokudlula i-10G PON ngoba izosebenzisa ubuchwepheshe obuphezulu be-25G obusetshenziswa ukuxhuma izikhungo zedatha.
Njengoba ukuthunyelwa kwesikhungo sedatha kwanda, inani le-25G optics lizokhula futhi izindleko zedivayisi zizokwehla. Yebo, akunakwenzeka ukuxhuma ngokuqondile lezi zingxenye zesikhungo sedatha ekunqanyulweni komugqa obonakalayo (OLT) kanye neyunithi yenethiwekhi yokubona (I-ONU) ama-transceivers, azodinga ubude bamaza amasha, amandla okudlulisela aphezulu esidluliseli, kanye nokuzwela okuphezulu komamukeli.
Kodwa-ke, lokhu akuhlukile kuma-PON esizukulwane sangaphambilini asebenzisa izingxenye ezivela kuma-transceivers amade nama-metro. Ngaphezu kwalokho, i-25G iwubuchwepheshe obulula be-TDM obungadingi ama-laser abizayo ashintshwayo.
Sula isimo sohlelo lokusebenza
Mayelana nesidingo semakethe, isici sesibili esidingekayo ukuze kuphumelele i-25G PON ukuqinisekisa ukuthi i-25G inamacala okusebenzisa acacile, okuhlanganisa ukuhlala, ukuhweba, njalonjalo. Imakethe yendawo yokuhlala inganikeza ithuba lokuhlanganisa izinsizakalo ze-Gigabit kuma-PON aphezulu kakhulu; emkhakheni wezohwebo, i-25G izohlinzeka nge-10G noma izinsizakalo eziphakeme zokwandisa izinsizakalo kumabhizinisi.
Ukwengeza, ngenkathi ye-5G, ukudluliswa kwebanga elide kudinga i-25G. Nakuba i-XGS-PON noma i-10G PTP ingaxazulula ngokuphumelelayo izinkinga zebanga elimaphakathi ne-backhaul, ngenxa yokwanda komkhawulokudonsa we-RF nesendlalelo se-antenna ye-MIMO, i-25G PON iyadingeka esimweni sokuminyana okuphezulu kanye nokuphuma okuphezulu kweseli eyodwa. Ngesikhathi esifanayo, i-25G PON ihambisana nokuvela kwenethiwekhi yeselula ngoba i-interface ye-25G ebonakalayo izosetshenziselwa kokubili amayunithi aphakathi nendawo nasatshalaliswa.
Eminye imisindo
Njengenjwayelo, imboni ifunda izinketho ezahlukahlukene zokuvela kwe-PON. Isibonelo, i-50G PON ihlongoziwe, kodwa ibeka inselele ye-ecosystem ngaphambi kwesikhathi engeke ibe ngcono kuze kube ngu-2025, futhi okwamanje akukho ukubonakala esimweni sebhizinisi se-50G.
Umfanekiso: Izizukulwane ezimbalwa zobuchwepheshe be-PON zithembele kubuchwepheshe obufakazelwe be-optical and electronic
Esinye isixazululo esicatshangelwayo siwukwenza isibopho esingu-2x10G kumaza angamaza amabili angashintsheki. Isixazululo sisebenzisa i-GPON wavelength kanye ne-XGS wavelength. Ngeshwa, le ndlela iletha izindleko eziphakeme (okuphindwe kabili kwe-10G optics), ukwanda kobunzima, nokuntuleka kokukwazi ukuhambisana nokuthunyelwa kwe-GPON yamanje, ngakho-ke asikho isikhalazo semakethe.
Inkinga efanayo ingenzeka ngendlela ye-2xTWDM ye-tunable wavelength bonding. I-TWDM isivele ibiza kakhulu, idinga ama-lasers amabili ukuxhuma ubude be-wavelength ku-I-ONU, okwenza izindleko zokuthunyelwa kwenani elikhulu zibe phezulu nakakhulu.
I-25G PON iyindlela ephumelela kakhulu yokuguqulela inethiwekhi ye-fiber-optic esizukulwaneni esilandelayo, indlela elula esebenzisa i-wavelength eyodwa futhi engadingi i-laser eshuniwe.
Ihambisana ne-GPON kanye ne-XGS-PON futhi inikeza amazinga aphezulu angu-25Gb/s nomfula kanye no-25Gb/s noma 10Gb/s amanani akhuphukayo. Futhi kusekelwe kubuchwepheshe be-optical obufakazelwe kanye ne-ecosystem eguqukayo eyenza lobu buchwepheshe bulethwe emakethe ngokushesha. Ingakwazi ukuhlangabezana nezidingo eziphakeme zokuhlala, ezentengiselwano nezinye ngesikhathi esifushane, ngenkathi ibhekana nosongo lokuncintisana lwe-25G EPON kanye nabaqhubi bezintambo.