PON (Passive Optical Network) amatanthauza kuti palibe zida zilizonse zogwira ntchito ndipo mungogwiritsa ntchito Optical Fiber ndi Passive Components pakati pa OLT ( Optical Line Terminal) ndi ONU ( Optical Network Unit). Ndipo PON mu umisiri waukulu kukhazikitsa FTTB/FTTH, amene makamaka utenga mfundo Mipikisano mfundo maukonde dongosolo.
Pali zambiri mu PON Technology, ndipo PON Technology imangokhalira kubwereza ndikusintha. XPON Technology idapangidwa kuchokera ku APON, BPON, ndipo kenako EPON ndi GPON. Pali njira zosiyanasiyana zopatsirana komanso njira zotumizira zomwe zimapangidwa nthawi zosiyanasiyana.
APON ndi chiyani?
Kumapeto kwa zaka za m'ma 1990, ITU (International Telecommunication Union) Poyamba inakonza APON pogwiritsa ntchito Asynchronous Transfer Mode (ATM) packet Communication. APON imagwiritsa ntchito ma ATM apakati komanso owerengera ma ATM, kuphatikizika ndi gawo logawirana pa fiber optical fiber ndi Optical Line Terminal, zomwe zimapangitsa kuti mtengo wake ukhale wotsika ndi 20% ~ 40% poyerekeza ndi njira yachikhalidwe ya PDH/SDH yotengera dera. kusintha.
BPON ndi chiyani?
Ndi chitukuko chofulumira cha Ethernet Technology, APON sichigwiritsidwanso ntchito. Panthawiyi, lingaliro la Broadband Passive Optical Network (BPON) linaperekedwa. BPON ndi chowonjezera cha APON, chomwe poyamba chimadziwika kuti APON, koma kenako chinasinthidwa kukhala BPON ndi zolinga zosiyanasiyana. BPON imachokera ku ATM protocol, yothamanga kumtunda ndi kumunsi kwa 155Mbpas ndi 622Mbps motsatira. Nthawi yomweyo, Imawonjezera kugawika kwa bandiwifi, chitetezo ndi ntchito zina, ndipo imatha kupereka mwayi wa Efaneti, kufalitsa makanema, Mizere yobwereketsa kwambiri ndi ntchito zina.
EPON ndi chiyani?
Chifukwa cha kukwera mtengo kwa kutumiza kwa BPON, pambuyo pake idasinthidwa ndi EPON.EPON (Ethernet Passive Optical Network) yotsika mtengo komanso yachangu kwambiri ndi ukadaulo wa Ethernet Passive Optical Network.EPON PON yozikidwa pa Efaneti imaphatikiza ubwino waukadaulo wa PON ndi Tekinoloje ya Efaneti, imatengera mawonekedwe a Point to Multi-point, passive optical fiber transmission,
Chifukwa cha kukwera mtengo kwa kutumiza kwa BPON, pambuyo pake idasinthidwa ndi EPON.EPON (Ethernet Passive Optical Network) yotsika mtengo komanso yachangu kwambiri ndi ukadaulo wa Ethernet Passive Optical Network.EPON PON yozikidwa pa Efaneti imaphatikiza ubwino waukadaulo wa PON ndi Tekinoloje ya Efaneti, imatengera kapangidwe ka Point to- Multi-point, passive optical fiber transmission, ndipo imapereka mautumiki osiyanasiyana pa Efaneti. "Mailo otsiriza" kulumikizana.
GPON ndi chiyani?
GPON (Gigabit-Capable Passive Optical Network) ndi Gigabit Passive Optical Network kapena Gigabit Passive Optical Network.EPON ndi GPON amagwiritsa ntchito miyezo yosiyana, ndipo GPON ndiyotsogola kwambiri, imatha kutumiza ma bandwidth ambiri ndikunyamula ogwiritsa ntchito ambiri kuposa EPON. ubwino pa liwiro lapamwamba ndi mautumiki angapo poyerekeza ndi EPON, luso la GPON ndi lovuta kwambiri ndipo mtengo wake ndi wapamwamba kuposa wa EPON.Choncho, pakalipano, EPON ndi GPON ndi matekinoloje omwe amagwiritsidwa ntchito kwambiri pa PON Broadband access, ndi kusankha komwe teknoloji imadalira kwambiri mtengo wa optical fiber access ndi zofunikira za bizinesi.GPON idzakhala yoyenera kwa makasitomala omwe ali ndi bandwidth apamwamba, mautumiki ambiri, QoS ndi zofunikira za chitetezo, ndi teknoloji ya ATM monga msana.Chitukuko chamtsogolo ndichokwera kwambiri, mwachitsanzo , teknoloji ya EPON/GPON imapanga 10 G EPON / 10 G GPON, bandwidth idzapititsidwa patsogolo.
Kudziwa zambiri za APON,BPON,EPON,GPON
Pamene mphamvu zomwe zimafuna opereka maukonde zikupitiriza kuwonjezeka, kusinthasintha kwa maukonde ofikira kuyeneranso kukulirakulira kuti akwaniritse zofuna zomwe zikukula. Ubwino waukadaulo wa PON ndikuti utha kuchepetsa kugwiritsa ntchito zinthu za msana wa fiber ndikusunga ndalama.Flexible network structure, kuthekera kokulirakulira;Passive optical zida zili ndi kulephera kochepa ndipo sizosavuta kusokonezedwa ndi chilengedwe chakunja.Kuthandizira bizinesi yamphamvu luso, etc.