Hauv kev sib txuas lus hauv Network niaj hnub no, PassiveOptical Network (PON) thev naus laus zis tau maj mam ua lub luag haujlwm tseem ceeb hauv kev sib txuas lus hauv network nrog nws cov txiaj ntsig ntawm kev kub ceev, kev deb ntev thiab tsis muaj suab nrov. Ntawm lawv, GPON, XG-PON thiab XGS-PON yog cov thev naus laus zis passive optical network uas txhawj xeeb tshaj plaws. Lawv muaj lawv tus kheej cov yam ntxwv thiab siv dav hauv ntau qhov xwm txheej. Tsab xov xwm no tshuaj xyuas qhov sib txawv tseem ceeb ntawm peb cov thev naus laus zis no kom ntxaws kom pab cov nyeem ntawv nkag siab zoo dua txog lawv cov yam ntxwv thiab cov xwm txheej ntawm daim ntawv thov.
GPON, lub npe tag nrho Gigabit-CapablePassive OpticalNetwork, yog ib qho thev naus laus zis passive optical network thawj zaug tau tsim los ntawm FSAN lub koom haum hauv xyoo 2002. Tom qab ntau xyoo ntawm kev txhim kho, ITU-T tau ua tus qauv rau nws hauv xyoo 2003. GPON thev naus laus zis feem ntau yog rau kev nkag mus rau hauv network, uas tuaj yeem muab cov ntaub ntawv ceev ceev thiab muaj peev xwm loj, suab thiab video rau tsev neeg thiab cov lag luam.
Cov yam ntxwv ntawm GPON thev naus laus zis yog raws li nram no:
1. Ceev: tus nqi xa mus rau sab saud yog 2.488Gbps, tus nqi xa mus rau sab saud yog 1.244Gbps.
2. Qhov sib piv ntawm Shunt: 1:16/32/64.
3. Kev kis tau deb: qhov siab tshaj plaws kis tau deb yog 20km.
4. Hom ntawv encapsulation: Siv GEM (GEM Encapsulation Method) hom ntawv encapsulation.
5. Txoj kev tiv thaiv: Txais yuav 1 + 1 lossis 1: 1 txoj kev tiv thaiv kev hloov pauv tsis siv neeg.
XG-PON, lub npe tag nrho ntawm 10Gigabit-CapablePassive OpticalNetwork, yog tiam tom ntej ntawm GPON thev naus laus zis, tseem hu ua tiam tom ntej passive optical network (NG-PON). Piv nrog GPON, XG-PON muaj kev txhim kho zoo hauv kev ceev, shunt ratio thiab kev sib kis deb.
Cov yam ntxwv ntawm XG-PON thev naus laus zis yog raws li nram no:
1. Ceev: Tus nqi xa mus rau hauv qab yog 10.3125Gbps, tus nqi xa mus rau hauv qab yog 2.5Gbps (uplink kuj tseem tuaj yeem hloov kho mus rau 10 GBPS).
2. Qhov sib piv ntawm Shunt: 1:32/64/128.
3. Kev kis tau deb: qhov siab tshaj plaws kis tau deb yog 20km.
4. Hom ntawv pob khoom: Siv hom ntawv pob khoom GEM/10GEM.
5. Kev tiv thaiv mechanism: Txais yuav 1 + 1 lossis 1: 1 passive tiv thaiv switching mechanism.
XGS-PON, hu ua 10GigabitSymmetric Passive OpticalNetwork, yog ib qho symmetric version ntawm XG-PON, tsim los muab cov kev pabcuam broadband nrog cov nqi symmetric upstream thiab downstream. Piv nrog XG-PON, XGS-PON muaj kev nce ntxiv ntawm qhov ceev uplink.
Cov yam ntxwv ntawm XGS-PON thev naus laus zis yog raws li nram no:
1. Ceev: Tus nqi xa mus rau sab saud yog 10.3125Gbps, tus nqi xa mus rau sab saud yog 10 GBPS.
2. Qhov sib piv ntawm Shunt: 1:32/64/128.
3. Kev kis tau deb: qhov siab tshaj plaws kis tau deb yog 20km.
4. Hom ntawv pob khoom: Siv hom ntawv pob khoom GEM/10GEM.
5. Txoj kev tiv thaiv: Txais yuav 1 + 1 lossis 1: 1 txoj kev tiv thaiv kev hloov pauv tsis siv neeg.
Xaus Lus: GPON, XG-PON thiab XGS-PON yog peb lub thev naus laus zis tseem ceeb ntawm passive optical network. Lawv muaj qhov sib txawv pom tseeb hauv qhov ceev, shunt ratio, kis tau deb, thiab lwm yam, kom tau raws li qhov xav tau ntawm ntau yam kev siv.
Tshwj xeeb: GPON feem ntau yog rau kev nkag mus rau hauv network, muab cov ntaub ntawv ceev ceev, muaj peev xwm loj, lub suab thiab video thiab lwm yam kev pabcuam; XG-PON yog qhov hloov kho dua tshiab ntawm GPON, nrog kev ceev dua thiab qhov sib piv shunt yooj ywm dua. XGS-PON hais txog qhov sib npaug ntawm cov nqi upstream thiab downstream thiab yog qhov tsim nyog rau cov ntawv thov network peer-to-peer. Kev nkag siab txog qhov sib txawv tseem ceeb ntawm peb lub thev naus laus zis no pab peb xaiv qhov kev daws teeb meem network optical zoo rau ntau qhov xwm txheej sib txawv.
Lub sijhawm tshaj tawm: Plaub Hlis-24-2024