Sechizvarwa chitsva chetekinoroji yekuwana fiber ye optical, XPON ine mabhenefiti makuru mukudzivirira kupindirana, hunhu hwebandwidth, daro rekupinda, kugadzirisa uye manejimendi, nezvimwewo. Kushandiswa kwayo kwakakwezva kutariswa kukuru kubva kune vanoshanda pasi rose. Tekinoroji yekuwana optical yeXPON yakakura EPON uye GPON dzese dzakaumbwa necentral office OLT, user-side ONU equipment uye passive optical distribution network ODN. Pakati padzo, network yeODN nemidziyo chikamu chakakosha cheXPON integrated access, inosanganisira kuumbwa nekushandiswa kwenetwork itsva ye optical fiber. Midziyo yeODN yakabatana nemitengo yenetwork zvave zvinhu zvakakosha zvinodzivisa mashandisirwo eXPON.
Pfungwa
Parizvino, matekinoroji e xPON anowanzo kuve netariro anosanganisira EPON neGPON.
Tekinoroji yeGPON (Gigabit-CapablePON) ndiyo chizvarwa chemazuva ano che broadband passive optical integrated access standard yakavakirwa pachiyero cheITU-TG.984.x. Ine zvakanakira zvakawanda zvakaita sebandwidth yepamusoro, kushanda zvakanaka, kufukidzwa kukuru, uye rich user interfaces. Vashandisi vanoiona setekinoroji yakakodzera yekuita broadband uye kushandurwa kwakazara kwemasevhisi enetwork. Chiyero chepamusoro cheGPON i2.5Gbps, mutsetse wekumusoro i1.25Gbps, uye chiyero chepamusoro chekupatsanurana i1:64.
EPON rudzi rwe tekinoroji iri kubuda yekupinda mubroadband, iyo inoita kuti data, izwi nemavhidhiyo zviwanikwe kuburikidza nehurongwa hwekuwana internet imwe chete, uye ine hupfumi hwakanaka. EPON ichava tekinoroji huru yekupinda mubroadband. Nekuda kwehunhu hwechimiro chenetwork yeEPON, mabhenefiti akakosha ekupinda mubroadband kumba, uye musanganiswa wechisikigo we organic necomputer networks, nyanzvi pasi rese dzinobvumirana kuti passive optical networks ndiko kuwanikwa kwe "network nhatu mune imwe" uye mhinduro yemugwagwa weruzivo. Nzira yakanakisa yekutumira data ye "last mile".
Sisitimu ye network yePON yechizvarwa chinotevera xPON:
Kunyangwe EPON neGPON dziine matekinoroji adzo akasiyana, dzine network topology imwechete uye chimiro chakafanana chemanetiweki. Dzese dzakatarisana nekushandisa network imwe chete ye optical access uye hadzisi dzekubatana. Iyo inotevera-chizvarwa PON network system xPON inogona kutsigira panguva imwe chete. Aya ma standard maviri, kureva kuti, michina ye xPON inogona kupa marudzi akasiyana ePON access zvichienderana nezvinodiwa nevashandisi, uye kugadzirisa dambudziko rekusawirirana kwetekinoroji mbiri idzi. Panguva imwe chete, xPON system inopa puratifomu yakabatana yemanetiweki inogona kugadzirisa zvinodiwa zvakasiyana zvebhizinesi, kuita mabasa akazara (kusanganisira ATM, Ethernet, TDM) neQoS garandi yakasimba, uye kutsigira kutapurirana kweTV yetambo kuburikidza neWDM; panguva imwe chete, inogona kuziva otomatiki EPON, GPON Access card inowedzerwa uye inobviswa; inonyatsoenderana neEPON neGPON network panguva imwe chete. Kune manetiweki management, manejimendi ese uye magadzirirwo ndeebhizinesi, zvisinei nemusiyano wehunyanzvi pakati peEPON neGPON. Izvi zvinoreva kuti, kushandiswa kwehunyanzvi kweEPON neGPON kwakajeka kune manejimendi yenetwork, uye musiyano uripo pakati pezviviri izvi wakachengetedzwa uye unopihwa kune iyo upper-layer united interface. Puratifomu yakabatana yemanejimendi ndeimwe yemabhenefiti makuru ehurongwa uhwu, iyo inoita kuti tekinoroji mbiri dzakasiyana dzePON dzibatane padanho remanejimendi yenetwork dzibatane.
Main parameters uye technical indicators
Zvikamu zvikuru zve network ye xPON ndeizvi:
●Kugona kutsigira mabasa akawanda: kuwana kugona kwekutsigira kwakazara (kusanganisira ATM, Ethernet, TDM) nevimbiso yakasimba yeQoS, yekuvandudza bhizinesi, kutsigira kutapurirana kweTV yetambo kuburikidza neWDM;
●Kuziva otomatiki uye kutarisira makadhi eEPON neGPON;
●Kutsigira kugona kwebazi 1:32;
●Nhamba yekutumirwa kwemotokari haisi kupfuura makiromita makumi maviri;
●Kukwira nekudzika kwemutsetse wakaenzana 1.244Gbit/s. Basa rekutsigira nhamba dzetraffic dzechiteshi;
● Tsigira basa rekugovera bandwidth rinoshanduka uye risingachinji.
● Tsigira mabasa ekutambisa akawanda uye akawanda
Zviratidzo zvikuru zvehunyanzvi zve xPON network:
(1) Kugona kwesystem: Sisitimu iyi ine IP switching core yakakura (30G) inopa 10G Ethernet network interface, uye OLT yega yega inogona kutsigira 36 PON networks.
(2) Nzvimbo yekushandira mabasa akawanda: Inotsigira TDM, ATM, Ethernet, CATV, uye inopa vimbiso yakasimba yeQoS, iyo inogona kusanganisira mabasa aripo. Inonyatsotsigira kuvandudzwa kwakanaka kwebhizinesi.
(3) Zvinodiwa zvekuchengetedza system zvakanyanya uye kuwanikwa kwayo: Sisitimu iyi inopa nzira yekudzivirira 1+1 kuti ikwane zvizere nezvinodiwa ne network yekutaurirana kuti network ive yakavimbika, uye nguva yekushandura isingasviki 50ms.
(4) Nzvimbo ye network: nzira ye network inogadziriswa ye 10,20km, inosangana zvizere nezvinodiwa ne network ye access.
(5) Puratifomu yesoftware yekutonga sisitimu yakabatana: Kune nzira dzakasiyana dzekuwana, iva nepuratifomu yekutonga network yakabatana
Maumbirwo
Sisitimu yePassive optical fiber network sisitimu yekutumira mawaya emagetsi inoumbwa ne optical line terminal (OLT), optical distribution network (ODN), uye optical network unit (ONU), inonzi PON system. PON system reference model inoratidzwa muMufananidzo 1.
Sisitimu yePON inoshandisa chimiro chenetwork chinosvika panhamba dzakawanda, inoshandisa network yekugovera optical isingashande senzira yekutumira, inoshandisa nzira yekuparadzira mudownlink, uye TDM inoshanda muuplink, iyo inoita kuti single-fiber bidirectional signal transmission ishande. Kana ichienzaniswa nenetwork yemazuva ano yekupinda, PON system inogona kuderedza kushandiswa kwekupinda mukamuri remakombiyuta uye kuwana tambo dze optical, kuwedzera network coverage ye access node, kuwedzera access rate, kuderedza kutadza kwetambo nemidziyo yekunze, uye kuvandudza kuvimbika kwesisitimu. Panguva imwe chete, inochengetedzawo mari yekugadzirisa, saka PON system ndiyo tekinoroji huru yekushandisa yeNGB two-way access network.
Zvichienderana nemaitiro akasiyana ekutumira masaini ehurongwa, hunogona kunzi xPON, senge APON, BPON, EPON, GPON neWDM-PON. GPON neEPON zvakapararira pasi rese, uye kunewo mashandisirwo makuru mukushandura ma network eredhiyo neterevhizheni. WDM-PON isystem inoshandisa nzira dzakazvimiririra dze wavelength pakati peOLT neONU kugadzira kubatana kwe point-to-point. Zvichienzaniswa neTDM- dzakadai seEPON neGPON, PON neWDM-PON dzine mabhenefiti e high bandwidth, protocol transparency, kuchengetedzeka nekuvimbika, uye scalability yakasimba. Ndiwo mafambisirwo emangwana. Munguva pfupi, nekuda kwemisimboti yakaoma yeWDM-PON, mitengo yepamusoro yemidziyo, uye mitengo yakakwira yesystem, haisati yava nemamiriro ekushandiswa kukuru.
Zviratidzo zvikuru zvehunyanzvi zve xPON
①Kugona kwesystem: Sisitimu iyi ine IP switching core ine simba guru (30G), inopa 10G Ethernet network interface, uye OLT yega yega inogona kutsigira 36 PON;
②Multi-service interface: inotsigira TDM, ATM, Ethernet, CATV, uye inopa vimbiso yakasimba yeQoS, inogona kunyudza zvizere bhizinesi riripo, uye inotsigira zvechokwadi kusimudzira kwakanaka kwebhizinesi;
③ Zvinodiwa pakuvimbika zvakanyanya uye kuwanikwa kwesystem: Sisitimu iyi inopa nzira yekudzivirira 1+1 kuti ikwanise kusangana zvizere nezvinodiwa nenetwork yekutaurirana kuti network ive yakavimbika, uye nguva yekuchinja isingasviki 50m;
④Nzvimbo yenetwork: dhayamita yenetwork ye10-20km inogona kugadziriswa kuti ikwane zvizere zvinodiwa nenetwork yekupinda;
⑤Puratifomu yesoftware yekudzora sisitimu yakabatana: Kune nzira dzakasiyana dzekuwana, ine puratifomu yekudzora network yakabatana.
HUANET inogadzira mhando dzakawanda dze xPON ONU, xPON ONT, dzinosanganisira 1GE xPON ONU, 1GE+1FE+CATV+WIFI xPON ONT, 1GE+1FE+CATV+POTS+WIFI xPON ONU, 1GE+3FE+POTS+WIFI xPON ONT. Isu tinopawo Huawei xPON ONT.
Nguva yekutumira: Chikumi-24-2021