PON (Passive Optical Network) txhais tau tias tsis muaj cov cuab yeej siv tau thiab tsuas yog siv Optical Fiber thiab Passive Cheebtsam ntawm OLT ( Optical Line Terminal) thiab ONU ( Optical Network Unit ).Thiab PON hauv cov thev naus laus zis tseem ceeb los siv FTTB / FTTH, uas feem ntau siv taw tes rau ntau lub ntsiab lus network qauv.
Muaj ntau cov ntsiab lus nyob rau hauv PON Technology, thiab PON Technology yog tas li iterating thiab hloov tshiab.XPON Technology tsim los ntawm APON, BPON, thiab tom qab EPON thiab GPON.Muaj cov qauv sib txawv thiab cov qauv sib kis tau tsim nyob rau lub sijhawm sib txawv.
APON yog dab tsi?
Thaum kawg ntawm xyoo 1990, ITU (International Telecommunication Union) thawj zaug tau thov APON siv Asynchronous Transfer Mode (ATM) rau pob ntawv sib txuas lus.APON ua rau kev siv lub hauv nruab nrab thiab cov lej sib npaug ntawm ATM, ua ke nrog kev sib koom ua haujlwm ntawm passive divider ntawm optical fiber thiab Optical Line Terminal, uas ua rau tus nqi qis dua 20% ~ 40% dua li cov tsoos PDH / SDH nkag mus raws li hauv Circuit Court. hloov.
BPON yog dab tsi?
Nrog rau txoj kev loj hlob sai ntawm Ethernet Technology, APON yeej tsis siv lawm.Lub sijhawm no, lub tswv yim ntawm Broadband Passive Optical Network (BPON) tau thov.BPON yog ib qho kev txhim kho ntawm APON tus qauv, keeb kwm hu ua APON, tab sis tom qab ntawd hloov mus rau BPON rau ntau lub hom phiaj.BPON yog raws li ATM raws tu qauv, nrog rau ntws thiab downstream speeds ntawm 155Mbpas thiab 622Mbps feem.Nyob rau tib lub sijhawm, Nws ntxiv cov kev faib tawm dynamic bandwidth, kev tiv thaiv thiab lwm yam haujlwm, thiab tuaj yeem muab Ethernet nkag mus, kev sib kis hauv video, high-speed Lease Lines thiab lwm yam kev pabcuam.
EPON yog dab tsi?
Vim yog tus nqi xa tawm siab ntawm BPON, nws tau hloov tom qab los ntawm kev siv nyiaj ntau dua thiab nrawm dua EPON.EPON (Ethernet Passive Optical Network) yog Ethernet Passive Optical Network.EPON PON thev naus laus zis raws li Ethernet integrates qhov zoo ntawm PON technology thiab Ethernet thev naus laus zis, txais Point rau Multi-point qauv, passive optical fiber kis tau tus mob,
Vim yog tus nqi xa tawm siab ntawm BPON, nws tau hloov tom qab los ntawm kev siv nyiaj ntau dua thiab nrawm dua EPON.EPON (Ethernet Passive Optical Network) yog Ethernet Passive Optical Network.EPON PON thev naus laus zis raws li Ethernet integrates qhov zoo ntawm PON technology thiab Ethernet thev naus laus zis, siv Point to- Multi-point qauv, passive optical fiber ntau kis tau tus mob, thiab muab ntau yam kev pab cuam ntawm Ethernet.Vim tias EPON yog kev lag luam thiab siv tau zoo, nws yog txoj hauv kev zoo tshaj plaws kom ua tiav "peb lub network hauv ib qho" thiab "last mile" kev sib txuas lus.
GPON yog dab tsi?
GPON (Gigabit-Capable Passive Optical Network) yog Gigabit Passive Optical Network lossis Gigabit Passive Optical Network.EPON thiab GPON siv cov qauv sib txawv, thiab GPON muaj kev sib cav ntau dua, muaj peev xwm xa tau ntau bandwidth thiab nqa cov neeg siv ntau dua li EPON.Txawm hais tias GPON muaj ntau dua. qhov zoo ntawm kev kub ceev thiab ntau yam kev pab cuam piv nrog EPON, GPON cov cuab yeej siv ntau dua thiab nws cov nqi siab dua li ntawm EPON.Yog li ntawd, tam sim no, EPON thiab GPON yog cov cuab yeej siv dav tshaj plaws rau PON broadband nkag, thiab cov kev xaiv uas thev naus laus zis nyob ntawm tus nqi ntawm kev siv fiber ntau optical thiab cov kev xav tau ntawm kev lag luam.GPON yuav zoo dua rau cov neeg siv khoom uas muaj bandwidth siab, ntau qhov kev pabcuam, QoS thiab kev ruaj ntseg yuav tsum tau, thiab ATM thev naus laus zis raws li lub nraub qaum.Qhov kev txhim kho yav tom ntej yog siab dua bandwidth, piv txwv li. , EPON / GPON tshuab tsim 10 G EPON / 10 G GPON, bandwidth yuav raug txhim kho ntxiv.
Paub ntau ntxiv txog APON, BPON, EPON, GPON
Raws li lub peev xwm xav tau ntawm cov chaw muab kev pabcuam txuas ntxiv mus ntxiv, kev siv ntau yam ntawm kev nkag mus rau tes hauj lwm yuav tsum tau nthuav dav kom tau raws li qhov kev xav tau loj hlob no.Fiber mus rau lub tsev (FTTH) passive optical network (PON) optical network access yog qhov siv ntau tshaj plaws thiab siv tshuab. Qhov zoo ntawm PON thev naus laus zis yog tias nws tuaj yeem txo qhov kev siv cov pob txha fiber ntau thiab txuag kev nqis peev. Cov qauv sib txuas sib txuas, muaj peev xwm nthuav dav; Cov khoom siv kho qhov muag tsis zoo muaj qhov tsis ua haujlwm tsawg thiab tsis yooj yim rau kev cuam tshuam los ntawm ib puag ncig sab nrauv. muaj peev xwm, etc.