Muri iki gihe, inganda z’itumanaho mu Bushinwa ziratera imbere byihuse, kandi moderi ya fibre optique ihora itezimbere kandi ikazamurwa.Kugaragara kwa PON-imikorere-optique modules yagiye isimbuza buhoro buhoro fibre-fibre optique kandi ikoreshwa cyane.PON igabanijwemo GPON na EPON.GPON irashobora gukoreshwa.Yavuze ko ari verisiyo igezweho ya EPON.
Kuki ushaka gusaba GPON?
GPON ifite igipimo kinini cya Gigabit, gukoresha umurongo wa 92% hamwe nubushobozi bwo gushyigikira itumanaho rya serivisi zinyuranye mu mucyo, mugihe harebwa ireme rya serivisi nurwego, bitanga imiyoboro yo mu rwego rwo hejuru ikurikirana no gucunga serivisi.
Ugereranije no gukoresha umurongo mugari, ikiguzi, inkunga ya serivise nyinshi, hamwe nibikorwa bya OAM, GPON iruta EPON:
1. Gukoresha Umuyoboro mugari: Ku ruhande rumwe, EPON ikoresha kodegisi ya 8B / 10B, ubwayo itangiza igihombo cya 20%.Ikwirakwizwa rya 1.25 Gbit / s mubyukuri ni 1 Gbit / s mbere yo gutunganya protocole.
2.Cost: Kubijyanye nigiciro kimwe-biti, igiciro cya GPON kiri munsi yicyiza EPON.
3.Inkunga ya serivisi ya Multi: EPON yohereza serivise gakondo ya TDM ikunze guhura nibibazo bya QoS. Ifishi idasanzwe ya pack ya GPON ituma ishyigikira serivisi za ATM na serivisi za IP, kugirango igere kuri serivisi yuzuye.
4.Imikorere ya OAM: EPON igenga gusa ibikorwa byibanze nko kwerekana amakosa ya kure, kugenzura kure, no kugenzura guhuza, mugihe indi mirimo ya OAM yateye imbere yigenga yigenga nuwabikoze mugikoresho. (DBA), guhuza gukurikirana, guhinduranya kurinda, guhanahana urufunguzo, nibikorwa bitandukanye byo gutabaza.Uhereye kubisanzwe, amakuru ya GPON OAM ni menshi kuruta EPON.
Ni ubuhe buryo bubiri bwo kohereza bwa GPON:
Imwe ni uburyo bwa ATM naho ubundi nuburyo bwa GPON (GEM). Muburyo bwo kohereza, GPON irashobora gukoresha uburyo bwa ATM cyangwa GEM, cyangwa uburyo bwombi bushobora gukoreshwa hamwe.Nubuhe buryo bwo gukoresha, hitamo igihe GPON yatangiriye. Fibre optique ifite ibyiza byo gutakaza bike no kuzigama umutungo.Urebye imiyoboro myinshi yagutse mugihe kiri imbere, ibihugu byinshi kandi byinshi bikoresha fibre optique nkuburyo bwo kohereza.