Iyo ieee802.3av chiyero inotsanangura 10g/1g (uplink rate 10g/downlink rate 1g) asymmetric physical layer mode (inozonzi 10g/1g asymmetric mode) uye 10g/10g (uplink rate uye downlink rate zvose zviri 10g) symmetrical two A. muviri layer (inozonzi 10g/10g symmetric mode) modhi:
Iyo olt mu10g/1g isiri-paviri modhi inogona kufambirana neonu mu1g/1g symmetric mode uye onu mu10g/1g asymmetric mode.OLT mu10g/10g symmetric mode inogona kufambirana neonu mu1g/1g modhi, onu mu10g/1g asymmetric mode, uye onu mu10g/10g symmetric mode.
Iyo OLT mu symmetric mode uye OLT mu asymmetric mode yakafanana mu downlink nzira ye optical nzira yemuviri wemuviri, uye 10g channel inoshandisa 1577nm wavelength uye 64b / 66b code encoding;saka zvisinei kuti onu iri mu symmetric modhi kana asymmetric modhi, inogona Kugamuchira downlink data kubva kune olt.Iyo olt ichatepfenyura nguva nenguva mpcpdsicoverygate (multi-point control protocol, multi-point control protocol) furemu.Nzvimbo yeruzivo yekuwana mufuremu inonyanya kushandiswa kuzivisa iyo uplink hwindo kugona (1g, 10g, 1g + 10g dual rate), uye onu anogona kuwana olt kuburikidza neiyi furemu yazvino yekushanda modhi.
Iyo onu mu symmetric modhi uye asymmetric modhi inowirirana zvachose pa mac layer (media access control, medium access control layer), uye mutsauko uripo pakati pawo wakatarisana ne phy layer (yemuviri layer, yepasi layer ye osi), uye iyo kutumira maparamendi eiyo phy layer zvinoenderana neIsa iyo optical module yeonu:
Kana iyo asymmetric optical module ikaiswa muonu (kureva kuti, onu iri asymmetric onu), sezvo iyo uplink rate yeasymmetric optical module inosvika 1g, iyo phy layer yeonu inogona kungogadzirisa mwero wekutapurirana we1g. kushanda mune asymmetric mode.Kana symmetrical optical module yakaiswa mu onu, sezvo iyo uplink rate ye optical module inosvika 10g, onu inogona kugadzirisa chiyero chekutumira che phy layer kusvika 10g kushanda mu symmetric mode, kana kugadzirisa chiyero chekutumira. iyo phy layer kusvika ku1g kushanda mune asymmetric mode.
Nekudaro, iyo onu neolt iripo ichave neinotevera kukanganisa kana network ichikwidziridzwa:
Panguva yekusimudzira network, OLT inogona kuchinja pakati pe symmetric mode uye asymmetric mode, asi ONU haigoni kuchinja maererano nekushandurwa kweOLT.Semuyenzaniso, OLT inochinja kubva pasymmetric mode kuenda ku asymmetric mode, asi ONU ichiri mu symmetric mode.Panguva ino, magumo emunharaunda (olt) uye kure kure (onu) modes hazvienderane.Technical realization elements:
Tichitarisa kukanganisa kuripo muunyanzvi hwekare, dambudziko rehutano rinogadziriswa nekugadzirwa kwemazuva ano nderokuti: kuita sei onu inoshandura kuchinja maererano nekushandura maitiro ekare apo olt ichiita shanduko ye symmetric mode / asymmetric mode;kugadzirwa kwazvino kunoziva kusanganisa kwakaringana kweiyo olt uye onu Adaptation, hapazove nekusawirirana pakati penzvimbo yekupedzisira modhi uye kure kure.
Kuti uwane chinangwa chiri pamusoro apa, onu yakapihwa neyakagadzirwa ikozvino inochinjika kune 10g/10g symmetry uye 10g/1g asymmetry, kusanganisira anotevera matanho:
Danho a: Tora mhando ye optical module ye onu.Kana iyo optical module iri symmetrical optical module, sarudza ikozvino kushanda modhi yeOnu.Kana iyo nzira yekushanda yeOnu iri symmetrical mode, enda kunhanho b;kana iyo yekushanda modhi yeOnu iri asymmetrical modhi, enda kune nhanho c;
Danho b: Sarudza kana nhamba yeruzivo rwewindow yakabudiswa neolt mu asymmetric mode iri pamusoro pechikumbaridzo chakatarwa, kana zvakadaro, shandura nzira yekushanda ye onu kubva ku symmetrical mode kusvika kune asymmetrical mode, uye kupera;kana zvisina kudaro, chengetedza maitiro ekushanda kweonu, uye kupera;
Danho c: Sarudza kana nhamba yeruzivo rwewindow yakabudiswa neolt mu symmetric mode iri pamusoro pechikumbaridzo chakataurwa, kana zvakadaro, shandura maitiro ekushanda onu kubva kune asymmetric mode kuenda kune symmetric mode, uye kupera;kana zvisina kudaro, chengetedza maitiro ekushanda onu, kupera.
Pahwaro hweiyo yepamusoro tekinoroji mhinduro, maitiro ekuwana iyo mhando yeoptical module yeonu inotsanangurwa mudanho a ndeye: kana iyo onu yatanga, tora mhando yeiyo optical module yeonu:
Kana iyo optical module iri asymmetric optical module, kumisa maitiro uye kupera;
Kana iyo optical module iri symmetrical optical module, apo onu inoshanduka kubva kune-isina-light state kuenda kune yakakodzera mamiriro, torazve rudzi rweoptical module yeonu, kana iyo optical module iri symmetrical optical module, enderera mberi nemaitiro anotevera. of step a;kana iyo optical module iri asymmetrical Optical module, kumisa maitiro uye kupera.
Iyo onu inopiwa neyakagadzirwa ikozvino inopindirana ne10g / 10g symmetrical uye 10g / 1g asymmetrical systems, kusanganisira onu yekuongorora module, symmetrical mode switching module, uye asymmetrical mode switching module yakarongedzwa paonu;
Iyo onu yekuona module inoshandiswa ku: kuwana mhando ye optical module ye onu, apo optical module iri symmetrical optical module, sarudza ikozvino yekushanda mode ye onu, kana nzira yekushanda yeonu iine symmetrical mode, tumira symmetrical mode switching signal kune symmetrical mode switching module;Kana iyo nzira yekushanda yeonu iine asymmetric mode, asymmetric mode switching signal inotumirwa kune asymmetric mode switching module;
Iyo symmetric mode switching module inoshandiswa ku: mushure mekugamuchira symmetric mode switching siginecha, tonga kana nhamba yeruzivo rwewindow yakapihwa neolt mune asymmetric mode inosvika pachikumbaridzo chakatarwa kana kwete, uye kana zvakadaro, shandura iyo yekushanda mode yeOnu. kubva pa symmetric mode kusvika kune asymmetric mode;Zvikasadaro chengeta maitiro ekushanda onu;
Iyo asymmetric mode switching module inoshandiswa ku: mushure mekugamuchira iyo asymmetric mode switching siginecha, tonga kana nhamba yeruzivo rwewindow inotumirwa neolt kune symmetric mode iri pamusoro pechikumbaridzo chakatarwa, uye kana zvakadaro, chinja maitiro ekushanda onu kubva. iyo asymmetric modhi kune symmetric modhi;Zvikasadaro ramba uchiita maitiro ekushanda.
Pamusoro peiyo yataurwa pamusoro pehunyanzvi chirongwa, maitiro ekuwana mhando ye optical module yeonu mune onu yekuona module ndeye: kana iyo onu inotanga, tora mhando ye optical module yeonu:
Kana iyo optical module iri asymmetric optical module, rega kushanda;
Kana iyo optical module iri symmetrical optical module, apo onu inoshanduka kubva kune-isina-light state kuenda kune yakabatana, torazve mhando yeoptical module yeonu, kana iyo optical module iri symmetrical optical module, enderera mberi nemaitiro anotevera. yeonu yekuona module;kana iyo optical module isiri-Symmetrical optical module, mira kushanda.
Zvichienzaniswa neunyanzvi hwekare, chigadzirwa chazvino chine zvakanakira:
(1) Tichireva nhanho imwe yezvigadzirwa zvazvino, zvinogona kuzivikanwa kuti kugadzirwa kwazvino kwakatanga kuwana nenzira kwayo mhando yeonu;pamusoro pechikonzero ichi, tichireva nhanho b uye nhanho c yezvigadzirwa zvemazuva ano, zvinogona kuonekwa kuti kugadzirwa kwemazuva ano kunogona kuona maitiro ekushanda kweiyo olt, uye maererano nekushanda kweiyo olt, kugadzirisa kugadzirisa maitiro ekushanda. yeOnu, kuitira kuti uone kuchinjika kwakaringana pakati peiyo olt neonu, uye hapazove nekusawirirana pakati penzvimbo yekupedzisira modhi uye yekure yekupedzisira modhi mune yekutanga art.
(2) Zvichireva nhanho yechigadzirwa chiripo, zvinogona kuonekwa kuti kana chigadzirwa chiripo chaona kuti rudzi rweonu is asymmetric onu, kureva kuti, onu chete inokwanisa kushanda mune asymmetric mode, uye onu inogona kungoenderana ne10g / 10g symmetric mode, uye kutevera hakuitike panguva ino (nokuti onu haigoni kushandura maitiro ekushanda), nokudaro kuderedza kushandiswa kwemari nekuvandudza kushanda kwekushanda.
(3) Zvichireva nhanho yechigadzirwa chiripo, zvinogona kuonekwa kuti kugadzirwa kwazvino kunoda kuona rudzi rweoptical module yeonu kana onu yatangwa uye kana onu yachinja kubva munzvimbo ine rima ichienda kuchiedza. , uye zvakataurwa pamusoro apa 2 zviwanikwa zvinogona kuona mamiriro ekutanga e-onu Mhando ye optical module (kuonekwa pakutanga), uye kana iyo optical module yakashandurwa (kuona painochinja kubva kune imwe nyika isina chiedza kusvika kune chiedza chenyika) ;saka, chigadzirwa chemazuva ano chinogona kunyatso shandura maitiro anotevera ekushanda maererano nemhando ye onu's optical module , kuitira kuti ave nechokwadi chekururama kwebasa racho.
Nguva yekutumira: Jun-05-2023