I-PON (i-Passive Optical Network) ithetha ukuba akukho nasiphi na isixhobo esisebenzayo kwaye sebenzisa kuphela i-Optical Fiber kunye ne-Passive Components phakathi kwe-OLT (i-Optical Line Terminal) kunye ne-ONU (iYunithi ye-Optical Network).Kwaye i-PON kubuchwephesha obuphambili bokuphumeza i-FTTB / FTTH, eyamkela ubukhulu becala kwi-multi-point network structure.
Kukho umxholo omninzi kwi-PON Technology, kwaye i-PON Technology ihlala iphindaphinda kwaye ihlaziya.I-XPON Technology iphuhliswe kwi-APON, i-BPON, kwaye kamva i-EPON kunye ne-GPON.Kukho iindlela ezahlukeneyo zothumelo kunye nemigangatho yothumelo ephuhliswe ngamaxesha ahlukeneyo.
Yintoni i-APON?
Ekupheleni kweminyaka ye-1990, i-ITU (i-International Telecommunication Union) I-APON yacetywa kuqala isebenzisa i-Asynchronous Transfer Mode (ATM) yoNxibelelwano lwepakethi.I-APON isebenzisa i-ATM ye-centralized kunye ne-statistical multiplexing, idityaniswe nomsebenzi wokwabelana we-passive divider kwi-fiber optical kunye ne-Optical Line Terminal, eyenza iindleko ziphantsi nge-20% ~ 40% kunenkqubo yokufikelela kwi-PDH / SDH esekelwe kwisekethe. ukutshintsha.
Yintoni i-BPON?
Ngophuhliso olukhawulezayo lweTekhnoloji ye-Ethernet, i-APON ngokusisiseko ayisasetyenziswa.Ngeli xesha, ingcamango ye-Broadband Passive Optical Network (i-BPON) yaphakanyiswa.I-BPON luphuculo lomgangatho we-APON, ekuqaleni owaziwa ngokuba yi-APON, kodwa kamva yatshintshelwa kwi-BPON ngeenjongo ezahlukeneyo.I-BPON isekelwe kwi-protocol ye-ATM, kunye nesantya esiphezulu kunye nezantsi kwe-155Mbpas kunye ne-622Mbps ngokulandelanayo.Kwangaxeshanye, Yongeza ulwabiwo lwebhanwidth eguquguqukayo, ukhuseleko kunye neminye imisebenzi, kwaye inokubonelela ngofikelelo lwe-Ethernet, ukuhanjiswa kwevidiyo, iiLiyini eziqeshiswayo ngesantya esiphezulu kunye nezinye iinkonzo.
Yintoni iEPON?
Ngenxa yeendleko eziphezulu zokuthunyelwa kwe-BPON, emva koko yatshintshwa yi-EPON.EPON ebiza kakhulu kwaye ikhawuleza (i-Ethernet Passive Optical Network) yi-Ethernet Passive Optical Network.EPON PON iteknoloji esekelwe kwi-Ethernet idibanisa inzuzo ye-PON iteknoloji kunye Itekhnoloji ye-Ethernet, yamkela iNqanaba ukuya kwisakhiwo se-Multi-point, i-passive optical fiber transmission,
Ngenxa yeendleko eziphezulu zokuthunyelwa kwe-BPON, emva koko yatshintshwa yi-EPON.EPON ebiza kakhulu kwaye ikhawuleza (i-Ethernet Passive Optical Network) yi-Ethernet Passive Optical Network.EPON PON iteknoloji esekelwe kwi-Ethernet idibanisa inzuzo ye-PON iteknoloji kunye Itekhnoloji ye-Ethernet, ithatha i-Point to-Multi-point structure, i-passive optical fiber transmission, kwaye ibonelela ngeenkonzo ezahlukeneyo kwi-Ethernet.Ngenxa yokuba i-EPON inoqoqosho kwaye isebenza kakuhle ukuyihambisa, yeyona ndlela isebenzayo yokufezekisa "uthungelwano oluthathu kwelinye" kwaye “imayile yokugqibela” yonxibelelwano.
Yintoni i-GPON?
I-GPON (i-Gigabit-Capable Passive Optical Network) yi-Gigabit Passive Optical Network okanye i-Gigabit Passive Optical Network.EPON kunye ne-GPON zisebenzisa imigangatho eyahlukeneyo, kwaye i-GPON ngokungathandabuzekiyo ihambele phambili kakhulu, iyakwazi ukuthumela i-bandwidth eninzi kwaye ithwala abasebenzisi abaninzi kune-EPON. inzuzo kwisantya esiphezulu kunye neenkonzo ezininzi xa kuthelekiswa ne-EPON, iteknoloji yeGPON inzima kakhulu kwaye iindleko zayo ziphezulu kunezo ze-EPON.Ngoko ke, okwangoku, i-EPON kunye ne-GPON zezona teknoloji zisetyenziswa kakhulu kwi-PON yokufikelela kwi-broadband, kunye nokukhethwa kwayo. iteknoloji ixhomekeke ngakumbi kwiindleko zokufikelela kwifiber optical kunye neemfuno zoshishino.GPON iya kulungeleka ngakumbi kubathengi abane-bandwidth ephezulu, iinkonzo ezininzi, i-QoS kunye neemfuno zokhuseleko, kunye nobuchwepheshe be-ATM njenge-backbone.Uphuhliso lwexesha elizayo luyi-bandwidth ephezulu, umzekelo. , iteknoloji ye-EPON / GPON iphuhlisa i-10 G EPON / 10 G GPON, i-bandwidth iya kuphuculwa ngakumbi.
Ukwazi ngakumbi nge-APON, BPON, EPON, GPON
Njengoko iimfuno zamandla kubaboneleli bothungelwano ziqhubeka zikhula, ukuguquguquka kothungelwano lokufikelela kufuneka kwandiswe ukuhlangabezana nale mfuno ikhulayo.Ifiber ukuya ekhaya (FTTH) passive optical network (PON) i-optical network access yeyona isetyenziswa kakhulu kwaye iphunyeziwe iteknoloji. Iinzuzo zeteknoloji yePON kukuba inokunciphisa ukusetyenziswa kwemithombo yefayibha yomqolo kunye nokugcina utyalo-mali.Isakhiwo sothungelwano esiguquguqukayo, amandla anamandla okwandisa;Izixhobo ze-Passive optical zinezinga eliphantsi lokungaphumeleli kwaye akukho lula ukuphazanyiswa yimeko yangaphandle.Inkxaso yoshishino olunamandla ubuchule, njl.