Nekuenderera mberi kwekuvandudzwa kweyepamusoro-speed network kuvaka uye kudikanwa kwekuvaka digitaalinen smart life yakavakirwa pa "matatu gigabit" network kugona, vafambisi vanoda kureba kutapurirana madaro, yakakwirira bandwidths, yakasimba kuvimbika uye yakaderera bhizinesi mashandiro (OPEX), uye GPON inotsigira mabasa akawanda kusangana nezvinodiwa nevatengi.
Chii chinonzi GPON?
GPON ndiwo chidimbu cheGigabit Passive Optical Network, chinotsanangurwa neITU-T yekurudziro yakatevedzana G.984.1 kusvika G.984.6.GPON inogona kutumira kwete Ethernet chete, asiwo ATM uye TDM (PSTN, ISDN, E1 uye E3) traffic.Chinhu chayo chikuru ndechekushandisa passive splitters mu optical fiber distribution network, ine point-to-multipoint access mechanism, kushandisa imwe inopinda optical fiber kubva panzvimbo yepakati yetiweki wetiweki kushandira mhuri dzakawanda uye vashandisi vemabhizimisi maduku.
GPON, EPON uye BPON
EPON (Ethernet Passive Optical Network) neGPON dzine zvirevo zvakada kufanana.Iwo ese ari maviri maPON network uye ese anoshandisa optical cables uye yakafanana optical frequency.Muyero weaya ma network maviri ari kumusoro kwenzira inosvika 1.25 Gbits/s.Uye BPON (Broadband Passive Optical Network) uye GPON zvakare akafanana zvakanyanya.Ivo vese vanoshandisa optical fibers uye vanogona kupa masevhisi evashandisi gumi nematanhatu kusvika makumi matatu nevaviri.Iyo BPON yakatarwa inotevera ITU-T G983.1, uye GPON inotevera ITU-T G984.1.Pakatanga kuiswa maPON application, BPON ndiyo yaive yakakurumbira.
GPON inonyanya kufarirwa mumusika wefiber optical.Pamusoro peiyo tekinoroji yepamusoro, ine zvakare zvinotevera zvakanakira:
1.Range: Single-mode fiber inogona kutumira data kubva ku10 kusvika ku20 makiromita, nepo tambo dzemhangura dzakajairwa dzinowanzoganhurirwa kune huwandu hwemamita zana.
2.Speed: The downstream transmission rate yeEPON yakafanana neyekukwira kwayo, inova 1.25 Gbit/s, ukuwo GPON yakadzika iri 2.48 Gbit/s.
3.Security: Pamusana pekuparadzaniswa kwezviratidzo mufiber optical, GPON inonyanya kuchengetedzwa.Nekuda kwekuti iwo anofambiswa munharaunda yakavharwa uye ane encryption, GPON haigone kubirwa kana kubatwa.
4.Affordability: GPON fiber optic cables inodhura kupfuura copper LAN cables, uye inogonawo kudzivisa kuisa mari mu wiring uye yakabatana nemichina yemagetsi, nokudaro kuchengetedza mari.
5.Kuchengetedza simba: Kusiyana netambo yemhangura yemhangura mumatanho akawanda, simba reGPON rinowedzera ne95%.Pamusoro pekushanda zvakanaka, gigabit passive optical network inopawo mhinduro yakaderera inogona kuwedzera vashandisi kuburikidza nekupatsanura, iyo inonyanya kufarirwa munzvimbo dzine vanhu vakawanda.