Tus qauv ieee802.3av txhais tau hais tias 10g / 1g (uplink tus nqi 10g / downlink tus nqi 1g) asymmetric lub cev txheej txheej (tom qab no hu ua 10g / 1g asymmetric hom) thiab 10g / 10g (uplink tus nqi thiab downlink tus nqi yog ob qho tib si 10g) symmetrical ob A Lub cev txheej (tom qab no hu ua 10g / 10g symmetric hom) hom:
Lub olt hauv 10g / 1g hom tsis yog khub tuaj yeem sib xws nrog onu hauv 1g / 1g symmetric hom thiab onu hauv 10g / 1g asymmetric hom.OLT hauv 10g / 10g symmetric hom tuaj yeem sib xws nrog onu hauv 1g / 1g hom, onu hauv 10g / 1g hom asymmetric, thiab onu hauv 10g / 10g symmetric hom.
OLT nyob rau hauv symmetric hom thiab OLT nyob rau hauv asymmetric hom yog tib yam nyob rau hauv lub downlink kev taw qhia ntawm optical txoj kev ntawm lub cev txheej, thiab 10g channel siv 1577nm wavelength thiab 64b / 66b code encoding;yog li tsis muaj teeb meem seb tus onu nyob rau hauv symmetric hom lossis asymmetric hom, nws tuaj yeem txais cov ntaub ntawv downlink los ntawm olt.Lub olt yuav ncua sij hawm tshaj tawm cov mpcpdsicoverygate (multi-point control protocol, multi-point control protocol) thav duab.Cov ntaub ntawv tshawb pom hauv tus ncej tshwj xeeb yog siv los ceeb toom rau lub qhov rais uplink muaj peev xwm (1g, 10g, 1g + 10g dual tus nqi), thiab tus onu tuaj yeem tau txais olt los ntawm cov ncej no tam sim no ua haujlwm.
Lub onu nyob rau hauv symmetric hom thiab asymmetric hom yog kiag li zoo ib yam ntawm mac txheej (media access control, nruab nrab nkag mus tswj txheej), thiab qhov sib txawv ntawm lawv yog concentrated nyob rau hauv phy txheej (lub cev txheej, txheej hauv qab ntawm osi), thiab cov xa tsis tau ntawm phy txheej nyob ntawm Insert lub optical module ntawm onu:
Thaum lub asymmetric kho qhov muag module tso rau hauv lub onu (uas yog, lub onu yog asymmetric onu), txij li thaum lub uplink tus nqi ntawm lub asymmetric optical module yog mus txog 1g, phy txheej ntawm lub onu tsuas yog configure tus kis tau tus mob ntawm 1g. ua haujlwm hauv hom asymmetric.Thaum ib tug symmetrical kho qhov muag module muab tso rau hauv lub onu, txij li thaum lub uplink tus nqi ntawm lub kho qhov muag module yog mus txog 10g, lub onu yuav yog configure tus nqi xa ntawm phy txheej rau 10g mus ua hauj lwm nyob rau hauv symmetric hom, los yog configure tus nqi xa ntawm. phy txheej rau 1g ua haujlwm hauv hom asymmetric.
Txawm li cas los xij, onu thiab olt uas twb muaj lawm yuav muaj qhov tsis xws luag hauv qab no thaum lub network hloov kho dua tshiab:
Thaum lub sijhawm hloov kho network, OLT tuaj yeem hloov pauv ntawm hom symmetric thiab asymmetric hom, tab sis ONU tsis tuaj yeem hloov raws li kev hloov pauv ntawm OLT.Piv txwv li, OLT hloov ntawm symmetric hom mus rau asymmetric hom, tab sis ONU tseem nyob rau hauv symmetric hom.Lub sijhawm no, qhov kawg hauv zos (olt) thiab tej thaj chaw deb kawg (onu) hom tsis sib xws.Technical realization cov ntsiab lus:
Lub hom phiaj ntawm qhov tsis xws luag uas muaj nyob rau hauv daim duab ua ntej, qhov teeb meem kev daws teeb meem los ntawm qhov kev tsim kho tam sim no yog: yuav ua li cas kom lub onu hloov pauv raws li kev hloov pauv ntawm olt thaum lub olt ua qhov kev hloov pauv ntawm symmetric hom / asymmetric hom;tam sim no invention realizes lub zoo meej ua ke ntawm lub olt thiab lub onu Adaptation, yuav tsis muaj mismatch ntawm lub zos kawg hom thiab tej thaj chaw deb hom.
Txhawm rau kom ua tiav lub hom phiaj saum toj no, lub onu muab los ntawm qhov kev tsim kho tam sim no hloov mus rau 10g / 10g symmetry thiab 10g / 1g asymmetry, suav nrog cov kauj ruam hauv qab no:
Kauj ruam a: Tau txais hom optical module ntawm onu.Thaum lub optical module yog ib tug symmetrical optical module, txiav txim siab tam sim no ua hauj lwm hom ntawm onu.Yog tias hom kev ua haujlwm ntawm onu yog hom symmetrical, mus rau kauj ruam b;yog tias hom kev ua haujlwm ntawm onu yog hom asymmetrical, mus rau kauj ruam c;
Kauj ruam b: Txiav txim seb tus naj npawb ntawm cov ntaub ntawv qhov rai uas tau muab los ntawm olt hauv hom asymmetric yog siab tshaj qhov chaw pib, yog tias muaj, hloov hom kev ua haujlwm ntawm onu los ntawm hom symmetrical mus rau hom asymmetrical, thiab xaus;txwv tsis pub, khaws hom kev ua haujlwm ntawm onu, thiab xaus;
Kauj ruam c: Txiav txim seb tus naj npawb ntawm cov ntaub ntawv qhov rai uas tau muab los ntawm olt hauv symmetric hom yog siab tshaj qhov chaw pib, yog tias muaj, hloov hom kev ua haujlwm ntawm onu los ntawm hom asymmetric mus rau hom symmetric, thiab xaus;txwv tsis pub, khaws cov kev ua haujlwm ntawm onu, kawg.
Nyob rau hauv lub hauv paus ntawm cov kev daws teeb meem saum toj no, cov txheej txheem ntawm kev tau txais cov hom ntawm optical module ntawm onu piav nyob rau hauv kauj ruam a yog: thaum lub onu pib, tau txais hom optical module ntawm lub onu:
Yog hais tias qhov kho qhov muag module yog asymmetric optical module, txiav cov txheej txheem thiab xaus;
Yog hais tias lub optical module yog ib tug symmetrical optical module, thaum lub onu hloov los ntawm lub tsis muaj lub teeb lub xeev mus rau lub xeev muaj feem xyuam, reacquire hom optical module ntawm lub onu, yog hais tias lub optical module yog ib tug symmetrical optical module, txuas ntxiv cov txheej txheem tom ntej. ntawm kauj ruam a;Yog hais tias lub optical module yog asymmetrical Optical module, txiav cov txheej txheem thiab xaus.
Lub onu muab los ntawm tam sim no invention adapts rau 10g / 10g symmetrical thiab 10g / 1g asymmetrical systems, nrog rau ib tug onu nrhiav module, ib tug symmetrical hom switching module, thiab ib tug asymmetrical hom switching module teem rau onu;
Lub onu nrhiav tau module yog siv rau: tau txais hom optical module ntawm lub onu, thaum lub optical module yog ib tug symmetrical optical module, txiav txim siab tam sim no ua hauj lwm hom ntawm lub onu, yog hais tias tus ua hauj lwm hom ntawm lub onu yog ib tug symmetrical hom, xa ib symmetrical hom switching teeb liab mus rau symmetrical hom switching module;Yog tias hom kev ua haujlwm ntawm onu yog hom asymmetric, ib qho asymmetric hom hloov lub teeb liab raug xa mus rau asymmetric hom hloov module;
Lub symmetric mode switching module yog siv rau: tom qab tau txais lub symmetric hom hloov lub teeb liab, txiav txim seb tus naj npawb ntawm cov ntaub ntawv qhov rais tawm los ntawm lub olt nyob rau hauv lub asymmetric hom mus txog rau ib tug kev cai pib los yog tsis, thiab yog hais tias yog li ntawd, hloov cov kev ua hauj lwm hom ntawm lub onu. los ntawm hom symmetric mus rau hom asymmetric;Txwv tsis pub khaws cov kev ua haujlwm ntawm onu;
Lub asymmetric mode switching module yog siv rau: tom qab tau txais lub asymmetric hom hloov lub teeb liab, txiav txim seb tus naj npawb ntawm cov ntaub ntawv qhov rais xa los ntawm olt mus rau lub symmetric hom yog saum toj no qhov chaw pib, thiab yog hais tias yog li ntawd, hloov cov kev ua hauj lwm hom ntawm lub onu los ntawm hom asymmetric mus rau hom symmetric;Txwv tsis pub kom koj ua haujlwm hom.
Raws li cov lus qhia saum toj no, cov txheej txheem ntawm kev tau txais hom optical module ntawm onu nyob rau hauv lub onu nrhiav pom module yog: thaum lub onu pib, tau txais hom optical module ntawm lub onu:
Yog hais tias lub optical module yog asymmetric optical module, nres ua haujlwm;
Yog hais tias lub optical module yog ib tug symmetrical optical module, thaum lub onu hloov los ntawm lub tsis muaj-lub teeb lub xeev mus rau lub xeev muaj feem xyuam, reacquire hom ntawm optical module ntawm lub onu, yog hais tias lub optical module yog symmetrical optical module, txuas ntxiv cov txheej txheem tom ntej. ntawm onu nrhiav tau module;Yog tias qhov kho qhov muag module yog qhov tsis yog-Symmetrical optical module, nres ua haujlwm.
Piv nrog rau yav dhau los kos duab, tam sim no invention muaj qhov zoo ntawm:
(1) Xa mus rau kauj ruam ib qho ntawm qhov kev tsim kho tam sim no, nws tuaj yeem paub tias qhov kev tsim khoom tam sim no tau ua ntej tau txais hom ntawm onu;ntawm lub hauv paus no, xa mus rau kauj ruam b thiab kauj ruam c ntawm qhov kev tsim kho tam sim no, nws tuaj yeem pom tias qhov kev tsim kho tam sim no tuaj yeem ntes cov kev ua haujlwm ntawm olt, thiab raws li kev khiav hauj lwm hom ntawm olt, kom hloov kho hom kev ua haujlwm. ntawm onu, thiaj li paub txog qhov zoo tshaj plaws adaptation ntawm lub olt thiab lub onu, thiab yuav tsis muaj mismatch ntawm lub zos kawg hom thiab tej thaj chaw deb hom nyob rau hauv lub ua ntej kos duab.
(2) Xa mus rau kauj ruam ntawm qhov kev tsim kho tam sim no, nws tuaj yeem pom tau tias yog qhov kev tsim kho tam sim no txiav txim siab tias hom onu yog asymmetric onu, uas yog, onu tsuas muaj peev xwm ua haujlwm hauv hom asymmetric, thiab onu tsuas yog hloov mus rau 10g / 10g symmetric hom, thiab kev ua raws li cov txheej txheem tsis tau ua nyob rau lub sijhawm no (vim tias onu tsis tuaj yeem hloov hom kev ua haujlwm), yog li txo cov nqi khiav lag luam thiab txhim kho kev ua haujlwm.
(3) Xa mus rau kauj ruam ntawm qhov kev tsim kho tam sim no, nws tuaj yeem pom tias qhov kev tsim kho tam sim no yuav tsum kuaj xyuas hom optical module ntawm onu thaum lub onu pib thiab thaum lub onu hloov los ntawm lub tsaus ntuj mus rau lub teeb lub teeb. , thiab cov lus hais saum toj no 2 kev kuaj pom tuaj yeem kuaj pom thawj lub xeev ntawm onu Hom kho qhov muag module (nrhiav thaum pib), thiab seb qhov kho qhov muag module tau hloov pauv (nrhiav thaum hloov ntawm lub xeev tsis muaj teeb rau lub teeb ci) ;yog li ntawd, qhov kev tsim kho tam sim no tuaj yeem hloov cov kev ua haujlwm tom ntej raws li hom onu's optical module, thiaj li ua kom qhov tseeb ntawm kev ua haujlwm.
Post lub sij hawm: Jun-05-2023