Ubuchwepheshe be-PON nezimiso zayo zokuxhumana

Isifinyezo sobuchwepheshe be-PON kanye nezimiso zayo zokuxhumana: Lesi sihloko sethula kuqala umqondo, isimiso sokusebenza nezici zobuchwepheshe be-PON, bese sixoxa ngokuningiliziwe ukuhlukaniswa kobuchwepheshe be-PON nezici zokusetshenziswa kwayo ku-FTTX. Ukugxila kwe-athikili ukunaba ngezimiso zokuxhumana okufanele zilandelwe ekuhleleni kwenethiwekhi yobuchwepheshe be-PON ukuze kuqondiswe ukwakhiwa kwenethiwekhi kwangempela nomsebenzi wokwenza ngokugcwele.
Amagama angukhiye: PON; OLT;I-ONU; I-ODN; I-EPON; I-GPON

1. Uhlolojikelele lobuchwepheshe be-PON (i-Passive Optical Network, i-Passive Optical Network) ubuchwepheshe benethiwekhi obusebenzisa i-fiber optical njengendlela yokudlulisa futhi eqaphela ukudluliswa kwedatha ngamadivaysi abonakalayo angenayo. Ubuchwepheshe be-PON bunezinzuzo zebanga elide lokudlulisela, umkhawulokudonsa ophezulu, ikhono eliqinile lokulwa nokuphazamiseka, kanye nezindleko eziphansi zokulondoloza, ngakho-ke sebusetshenziswe kabanzi emkhakheni wokufinyelela amanethiwekhi. Inethiwekhi ye-PON ikakhulukazi yakhiwe izingxenye ezintathu:OLT(Optical Line Terminal, optical line terminal), i-ONU (Optical Network Unit, optical network unit) kanye ne-ODN (Optical Distribution Network, optical distribution network).

2. Ukuhlukaniswa kobuchwepheshe be-PON nezici zohlelo lokusebenza kubuchwepheshe be-FTTX PON kuhlukaniswe ikakhulukazi izinhlobo ezimbili: i-EPON (i-Ethernet PON, i-Ethernet Passive Optical Network) kanyeI-GPON(Gigabit-Capable PON, Gigabit Passive Optical Network). I-EPON isuselwe kuphrothokholi ye-Ethernet, inokuhambisana okuphezulu nokuvumelana nezimo, futhi ifanele izimo zebhizinisi ezihlukahlukene. I-GPON inesivinini esiphezulu sokudlulisela kanye nekhono elicebile lokusekela isevisi, futhi ilungele izimo ezinomkhawulokudonsa ophezulu kanye nezidingo ze-QoS. Kuzinhlelo zokusebenza ze-FTTX (Fiber To The X), ubuchwepheshe be-PON budlala indima ebalulekile. I-FTTX isho i-architecture yenethiwekhi ebeka i-optical fiber eduze kwezakhiwo zomsebenzisi noma okokusebenza komsebenzisi. Ngokwezigaba ezihlukene zokubeka i-fiber optical, i-FTTX ingahlukaniswa ibe yizinhlobo ezahlukene ezifana ne-FTTB (I-Fiber To The Building) kanye ne-FTTH (I-Fiber To The Home). Njengenye yezindlela ezibalulekile zokuqalisa ze-FTTX, ubuchwepheshe be-PON buhlinzeka abasebenzisi ngoxhumo lwenethiwekhi olunesivinini esikhulu futhi oluzinzile.

3. Izimiso zokuxhumana zobuchwepheshe be-PON Ekuhleleni inethiwekhi yobuchwepheshe be-PON, le migomo yenethiwekhi elandelayo idinga ukulandelwa:
I-architecture yenethiwekhi ilula futhi iyasebenza:amazinga enethiwekhi kanye nenani lama-node kufanele kwehliswe ngangokunokwenzeka ukuze kuncishiswe inkimbinkimbi yenethiwekhi kanye nezindleko zokuyilungisa. Ngesikhathi esifanayo, kuyadingeka ukuqinisekisa ukuthi inethiwekhi inokwethenjelwa okuphezulu nokuzinza ukuze ihlangabezane nezidingo zebhizinisi lomsebenzisi.
Amandla okuthwala amabhizinisi aqinile:Amanethiwekhi e-PON kufanele abe nomkhawulokudonsa ophezulu kanye namakhono okuqinisekisa i-QoS ukuze ahlangabezane nezidingo zebhizinisi ezikhulayo zabasebenzisi. Ngesikhathi esifanayo, kuyadingeka ukusekela izinhlobo eziningi zebhizinisi kanye nokufinyelela kwedivayisi yokugcina ukuze kuzuzwe ukuhlanganiswa kwebhizinisi nokuphathwa okuhlangene.
Ukuphepha okuphezulu:Amanethiwekhi e-PON kufanele asebenzise izindlela zokuphepha ezihlukahlukene ukuze aqinisekise ukugcinwa kuyimfihlo, ubuqotho kanye nokutholakala kokudluliswa kwedatha. Isibonelo, izindlela zokuphepha ezifana nokudlulisa okubethelwe kanye nokulawula ukufinyelela kungasetshenziswa ukuvimbela ukuhlaselwa kwenethiwekhi nokuvuza kwedatha.
Ukukala okuqinile:Amanethiwekhi e-PON kufanele abe nokukaleka okuhle futhi akwazi ukuzivumelanisa nezinguquko zezidingo zebhizinisi zesikhathi esizayo kanye nokuthuthukiswa kobuchwepheshe. Isibonelo, isikali senethiwekhi nokufakwa kunganwetshwa ngokuthuthukisa i-OLT kanye nemishini ye-ONU noma ngokungeza amanodi e-ODN.
Ukuhambisana okuhle:Amanethiwekhi e-PON kufanele asekele izindinganiso eziningi nezivumelwano futhi akwazi ukuxhuma kalula futhi asebenzisane namanethiwekhi akhona kanye nemishini. Lokhu kusiza ukunciphisa izindleko zokwakha kanye nokugcinwa kwenethiwekhi futhi kuthuthukise ukusetshenziswa nokuthembeka kwenethiwekhi.

4.Ubuchwepheshe be-PON bokuphetha, njengobuchwepheshe obusebenzayo nobuthembekile bokufinyelela i-fiber fibre, bunamathemba abanzi okusebenza emkhakheni wokufinyelela amanethiwekhi. Ngokulandela imigomo yenethiwekhi yokuhlela nokwenza kahle kwenethiwekhi, ukusebenza nokuzinza kwenethiwekhi ye-PON kungathuthukiswa ngokwengeziwe ukuze kuhlangatshezwane nezidingo zebhizinisi ezikhulayo zabasebenzisi. Ngesikhathi esifanayo, ngokuthuthuka okuqhubekayo kobuchwepheshe kanye nokwanda okuqhubekayo kwezimo zohlelo lokusebenza, ubuchwepheshe be-PON buzodlala indima ebaluleke kakhulu esikhathini esizayo.