Okwangoku, ngokwetekhnoloji ye-fiber optical access network, ufikelelo lwe-narrowband luthatyathelwa indawo lufikelelo lwebroadband, kwaye ekugqibeleni ifayibha ikhaya liyafezekiswa.I-broadband optical fiber yenethiwekhi yokufikelela iba yinto engenakuphepheka, kwaye iteknoloji ye-PON iya kuba yindawo yobugcisa yokufikelela kwinethiwekhi ye-broadband kwixesha elizayo ngenxa yeenkonzo ezininzi, utyalo-mali oluphantsi kunye nokugcinwa lula.
Yintoni i-fiber access network?
Inethiwekhi yokufikelela kwifiber optical ibhekisa kuthungelwano lofikelelo apho i-transmission medium is a optical fiber.Uthungelwano lwe-fiber optical access networks lunokwahlulwa ngokobugcisa lube ngamacandelo amabini: uthungelwano olusebenzayo lwe-optical network (AON, Active Optical Network) kunye ne-passive optical networks (PON, Passive Optical Network).
Inethiwekhi ye-optical esebenzayo inokwahlulwa ibe yi-AON esekelwe kwi-SDH kunye ne-AON esekelwe kwiPDH;
Uthungelwano lwe-passive optical lunokwahlulwa lube yi-PON encinci kunye ne-Broadband PON.
Yiyiphi indima edlalwa yinethiwekhi yokufikelela kulwakhiwo lwenethiwekhi?
Uthungelwano lolwazi luqulunqwe ngumqolo ongundoqo womnatha, uthungelwano lwengingqi yemetropolitan, uthungelwano lofikelelo, kunye nothungelwano lwezakhiwo zabathengi.Inethiwekhi yokufikelela ikwibhulorho yothungelwano lwendawo yemetropolitan / inethiwekhi yomqolo.
Okwangoku, isayensi kunye nobuchwepheshe buqhubela phambili ngokunyuka, kwaye inani elikhulu leefayile ze-elektroniki zihlala ziveliswa.Ngokudibana kwezoqoqosho kunye nokukhawuleza kolwazi lwentlalo, i-Intanethi iye yanda kakhulu, iinkonzo zedatha ziye zanda ngobundlobongela, kwaye iintlobo zeenkonzo zonxibelelwano ziye zaqhubeka zanda.Uhlobo lweshishini.Inethiwekhi yokufikelela kwi-narrowband ibe ngumqobo othintela uphuhliso lwenethiwekhi kwi-broadband.Imarike yenethiwekhi yokufikelela inomthamo omkhulu, kwaye ubugcisa obutsha buhlala buvela ukuhlangabezana neemfuno zabasebenzisi.Uthungelwano lofikelelo lujoliso nesitshixo kuphuhliso lweziseko zolwazi zesizwe.Itekhnoloji yokufikelela kuthungelwano iye yaba yeyona ndawo kugxilwe kuyo kunye notyalo-mali kumaziko ophando, abathengisi bonxibelelwano, iinkampani zonxibelelwano kunye namasebe asebenzayo.
Izinto ezilungileyo zePON
1. Inokubonelela nge-broadband ecacileyo kunye neendleko eziphantsi zothumelo lwezakhono.
2. Xa kuthelekiswa nenethiwekhi ye-optical esebenzayo, ukufakwa kwayo, ukugunyaziswa kunye nokugcinwa kweendleko zokusebenza ziphantsi, kwaye inkqubo inokwethenjelwa kwaye izinzile, ngoko inethiwekhi yokufikelela isebenzisa inani elikhulu leenkqubo ze-PON.
3. Ngenxa yokuba i-PON ithatha i-point-to-multipoint mode yokufikelela, iindleko zeziseko zophuhliso zokubeka i-fiber optical phakathi kweofisi ephakathi kunye nabasebenzisi zithwalwa ngabasebenzisi, ezinokunyusa imbuyekezo kutyalo-mali kulwakhiwo lwenethiwekhi.Xa kuthelekiswa nendlela yokuqwalasela i-fiber optical ekupheleni kokuphela komsebenzisi ngamnye, umthamo wezixhobo ze-PON eziphucula iinkonzo kwinani elifanayo labathengi lincinci kwaye lithatha indawo encinci kwiofisi ephakathi.
4. I-PON ixhasa zombini iinkonzo zemveli (inkonzo yomnxeba yemveli ye-POTS, i-analog TV) kunye neenkonzo ze-broadband (ukuhanjiswa kwezwi le-IP, i-IPTV, ukufikelela kwi-intanethi ye-broadband, njl.).
I-5.PON isekela bonke abasebenzisi beendawo zokuhlala (usebenzisa i-POTS, i-analog TV kunye neenkonzo zedatha) kunye nabasebenzisi abaninzi bezentengiselwano (besebenzisa iinkonzo ze-T1 / E1 kunye ne-Ethernet) ukwabelana ngenethiwekhi yokufikelela (kubandakanywa umaleko womzimba kunye neprotocol layer) ngaphandle kokusebenzisa ukufikelela okwahlukileyo. Ukufikelela kwinethiwekhi kubonelela ngeenkonzo kubo, ngaloo ndlela kuncitshiswe inani lothungelwano olusasazekileyo lokufikelela.