Kodi xPON ndi chiyani

Monga mbadwo watsopano wa teknoloji ya optical fiber access, XPON ili ndi ubwino waukulu wotsutsana ndi kusokoneza, makhalidwe a bandwidth, mtunda wofikira, kukonza ndi kasamalidwe, etc. Ntchito yake yakopa chidwi chachikulu kuchokera kwa ogwira ntchito padziko lonse.Ukadaulo wofikira wa XPON ndi wokhwima EPON ndipo GPON onse amapangidwa ndi ofesi yapakati OLT, zida za ONU za ogwiritsa ntchito komanso netiweki yogawa ya ODN.Pakati pawo, maukonde a ODN ndi zida ndi gawo lofunikira la XPON Integrated access, yokhudzana ndi kupanga ndi kugwiritsa ntchito network yatsopano ya optical fiber.Zida zofananira za ODN ndi mtengo wapaintaneti zakhala zinthu zofunika kwambiri zoletsa kugwiritsa ntchito XPON.

Malingaliro

Pakadali pano, matekinoloje omwe ali ndi chiyembekezo pamakampani a xPON akuphatikiza EPON ndi GPON.

Tekinoloje ya GPON (Gigabit-CapablePON) ndi m'badwo waposachedwa wa Broadband passive Optical Integrated access standard yotengera mulingo wa ITU-TG.984.x.Ili ndi zabwino zambiri monga bandwidth yayikulu, kuchita bwino kwambiri, kuphimba kwakukulu, komanso mawonekedwe ogwiritsira ntchito olemera.Ogwiritsa ntchito amawona ngati ukadaulo wabwino kwambiri wopezera ma Broadband ndikusintha kwathunthu kwa mautumiki a netiweki.Kutsika kwakukulu kwa GPON ndi 2.5Gbps, kumtunda kwamtunda ndi 1.25Gbps, ndipo kugawanika kwakukulu ndi 1:64.

EPON ndi mtundu waukadaulo womwe ukubwera wa burodibandi, womwe umazindikira mwayi wophatikizika wa data, mawu ndi makanema kudzera munjira imodzi yokha yolumikizira fiber, ndipo imakhala ndi ndalama zabwino.EPON ikhala ukadaulo wofikira pa intaneti.Chifukwa cha mawonekedwe a mawonekedwe a netiweki ya EPON, mwayi wapadera wofikira kunyumba kwa burodibandi, komanso kuphatikizika kwachilengedwe ndi maukonde apakompyuta, akatswiri padziko lonse lapansi amavomereza kuti ma network osawoneka bwino akuzindikira "ma network atatu mumodzi" yankho la msewu wazidziwitso.Njira yabwino kwambiri yotumizira "mayilo omaliza".

M'badwo wotsatira wa PON network xPON:

Ngakhale EPON ndi GPON ali ndi matekinoloje awo osiyanasiyana, ali ndi topology yofanana yamaneti ndi kasamalidwe kamaneti kofananira.Onsewa amatsatiridwa ndi pulogalamu yofanana yolumikizira netiweki ndipo sizolumikizana.M'badwo wotsatira wa PON network xPON imatha kuthandizira nthawi yomweyo.Miyezo iwiriyi, ndiko kuti, zida za xPON zitha kupereka njira zosiyanasiyana zopezera PON malinga ndi zosowa zosiyanasiyana za ogwiritsa ntchito, ndikuthetsa vuto la kusagwirizana kwa matekinoloje awiriwa.Panthawi imodzimodziyo, dongosolo la xPON limapereka ndondomeko yoyendetsera maukonde ogwirizana omwe angathe kusamalira zosowa zosiyanasiyana zamalonda, kuzindikira ntchito zonse (kuphatikizapo ATM, Ethernet, TDM) zothandizira zothandizira ndi chitsimikizo chokhwima cha QoS, ndikuthandizira kutsika kwa chingwe cha TV kudzera pa WDM;nthawi yomweyo, imatha kuzindikira EPON, GPON Access khadi imawonjezedwa ndikuchotsedwa;imagwirizanadi ndi ma EPON ndi ma netiweki a GPON nthawi imodzi.Kwa oyang'anira maukonde, kasamalidwe konse ndi kasinthidwe ndi bizinesi, mosasamala kanthu za kusiyana kwaukadaulo pakati pa EPON ndi GPON.Izi zikutanthauza kuti, kukhazikitsidwa kwaukadaulo kwa EPON ndi GPON kumawonekera kwa oyang'anira maukonde, ndipo kusiyana pakati paziwiri kumatetezedwa ndikuperekedwa ku mawonekedwe apamwamba ogwirizana.Pulatifomu yolumikizira maukonde ndi imodzi mwazabwino zazikulu zadongosolo lino, zomwe zimazindikiradi kugwirizana kwa matekinoloje awiri osiyanasiyana a PON pamlingo wowongolera maukonde.

Main magawo ndi zizindikiro luso

Magawo akulu a netiweki ya xPON ndi awa:

● Mphamvu zothandizira mautumiki ambiri: kukwaniritsa ntchito zonse (kuphatikizapo ATM, Ethernet, TDM) zothandizira zothandizira ndi chitsimikizo chokhwima cha QoS, pofuna kukhathamiritsa bizinesi, kuthandizira kutsika kwa chingwe cha TV kudzera pa WDM;

●Kuzindikiritsa ndi kuyang'anira makadi a EPON ndi GPON;

● Thandizani 1:32 luso la nthambi;

● Mtunda wotumizira siwopitilira makilomita 20;

● Kumtunda ndi kumtunda kwa mzere wa symmetric line 1.244Gbit / s.Thandizani ziwerengero zamagalimoto zamadoko;

● Thandizani ntchito yogawa bandwidth ndi static.

● Thandizani ma multicast ndi ma multicast

Zizindikiro zazikulu zamakina a xPON network:

(1) Mphamvu ya dongosolo: Dongosololi lili ndi mphamvu yaikulu ya IP switching core (30G) kuti ipereke mawonekedwe a 10G Ethernet network, ndipo OLT iliyonse ikhoza kuthandizira 36 PON network.

(2) Mawonekedwe amitundu yambiri: Thandizani TDM, ATM, Ethernet, CATV, ndikupereka chitsimikizo chokhwima cha QoS, chomwe chitha kuphatikizapo ntchito zomwe zilipo.Imathandiziradi kukweza bwino kwa bizinesi.

(3) Kudalirika kwakukulu kwadongosolo ndi zofunikira zopezeka: Dongosololi limapereka njira yosinthira yachitetezo cha 1 + 1 kuti ikwaniritse zofunikira za netiweki yolumikizirana kuti ikhale yodalirika, ndipo nthawi yosinthira ndiyosakwana 50ms.

(4) Network osiyanasiyana: configurable 10,20Km netiweki njira, mokwanira kukwaniritsa zofunika za maukonde mwayi.

(5) Pulatifomu yolumikizana yoyang'anira dongosolo: Panjira zosiyanasiyana zopezera, khalani ndi nsanja yolumikizira maukonde

Kapangidwe

Passive optical fiber network system ndi optical fiber broadband transmission system yopangidwa ndi optical line terminal (OLT), optical distribution network (ODN), ndi optical network unit (ONU), yotchedwa PON system.Chitsanzo cha PON system chikuwonetsedwa mu Chithunzi 1.

Dongosolo la PON limatengera mawonekedwe a netiweki ya point-to-multipoint, imagwiritsa ntchito mawonekedwe ophatikizira ophatikizika ngati njira yotumizira, imagwiritsa ntchito njira yowulutsira mu downlink, ndi njira yogwirira ntchito ya TDM mu uplink, yomwe imazindikira kufalikira kwa siginecha imodzi ya bidirectional.Poyerekeza ndi maukonde chikhalidwe mwayi, ndi PON dongosolo akhoza kuchepetsa kumwa kwa chipinda kompyuta ndi kupeza kuwala zingwe, kuonjezera kuphimba maukonde a mfundo mwayi, kuonjezera mlingo wopezera, kuchepetsa mlingo kulephera kwa mizere ndi zida zakunja, ndi kusintha kudalirika kwa dongosolo.Nthawi yomweyo, imapulumutsanso ndalama zolipirira, kotero dongosolo la PON ndiye ukadaulo wogwiritsa ntchito njira ziwiri za NGB.

Malinga ndi mawonekedwe osiyanasiyana otumizira ma siginecha, imatha kutchedwa xPON, monga APON, BPON, EPON, GPON ndi WDM-PON.GPON ndi EPON zakhala zikugwiritsidwa ntchito padziko lonse lapansi, ndipo palinso ntchito zazikulu pakusintha ma wailesi ndi kanema wawayilesi njira ziwiri.WDM-PON ndi dongosolo lomwe limagwiritsa ntchito njira zodziyimira pawokha pakati pa OLT ndi ONU kuti apange kulumikizana kwa mfundo.Poyerekeza ndi TDM- monga EPON ndi GPON, PON ndi WDM-PON ali ndi ubwino wapamwamba bandwidth, protocol transparency, chitetezo ndi kudalirika, ndi scalability amphamvu.Ndiwo njira yachitukuko yamtsogolo.M'kanthawi kochepa, chifukwa cha mfundo zovuta za WDM-PON, mitengo yamtengo wapatali ya chipangizocho, komanso mtengo wapamwamba wa dongosolo, ilibe mikhalidwe ya ntchito zazikulu.

Zizindikiro zazikulu zaukadaulo za xPON

①System capacity: Dongosololi lili ndi mphamvu yayikulu yosinthira IP (30G), imapereka mawonekedwe a netiweki a 10G Ethernet, ndipo OLT iliyonse imatha kuthandizira ma PON 36;

②Mawonekedwe amitundu yambiri: kuthandizira TDM, ATM, Efaneti, CATV, ndikupereka chitsimikizo chokhwima cha QoS, imatha kuyamwa bwino bizinesi yomwe ilipo, ndikuthandizira kukweza bwino kwa bizinesiyo;

③ Kudalirika kwakukulu kwadongosolo ndi zofunikira zopezeka: Dongosololi limapereka njira yosinthira yachitetezo cha 1+1 kuti ikwaniritse zofunikira za netiweki yamatelefoni kuti ikhale yodalirika, ndipo nthawi yosinthira ndiyosakwana 50m;

④Utumiki wapaintaneti: 10-20km maukonde awiri akhoza kukhazikitsidwa kuti akwaniritse zofunikira pa intaneti;

⑤Pulatifomu yolumikizana yoyang'anira makina: Panjira zosiyanasiyana zofikira, ili ndi nsanja yolumikizana yoyendetsera maukonde.

HUANET imapanga mitundu yambiri ya xPON ONU, xPON ONT, kuphatikizapo 1GE xPON ONU, 1GE+1FE+CATV+WIFI xPON ONT, 1GE+1FE+CATV+POTS+WIFI xPON ONU, 1GE+3FE+POTS+WIFI xPON ONT.Timaperekanso Huawei xPON ONT.