Ngokuthunyelwa kunye nokuphunyezwa kokuguqulwa kwe-optical network ye-broadband network, umgangatho wothungelwano uphuculwe, izinga lokungaphumeleli liyancitshiswa, kwaye impembelelo evumayo yomsebenzisi yanda. Okwangoku, ukuqulunqwa kwenethiwekhi yokufikelela kwi-broadband ilawulwa yi-FTTH kwaye incediswa yi-PON + LAN. Ukuba inethiwekhi yokufikelela kwi-broadband yexesha elizayo ithatha itekhnoloji yePON yokunxibelelana, ayinakubonelela ngamava akumgangatho ophezulu womsebenzisi kuphela, kodwa inokunciphisa iindleko zokusebenza kweshishini kunye nokuphucula inzuzo yezoqoqosho. Okulandelayo, eli nqaku liza kwenza iingcebiso zophuhliso lobugcisa kunye nokuthunyelwa kwe-10G PON ngokubhekiselele kwiimfuno zoshishino.
Yintoni inethiwekhi yePON
Inethiwekhi yePON iqulatheOLT, ODN kunyeI-ONU. AnOLTisixhobo sisembindini wetopology yenethiwekhi. Ifikelela kwiinkonzo ezininzi zothungelwano ukuya phezulu kunye neenkonzo zabasebenzisi abaninzi ukuhla nge-ODN. Yindawo ebalulekileyo yokudibanisa inkonzo kunye nokuhanjiswa.OLTngaxeshanye uqonda imisebenzi emininzi yolawulo womnatha njengolawulo, ulawulo, ukusukela njalo njalo kwisixhobo somthengiI-ONU. OLTizixhobo zisembindini womnatha wePON, zombini ngokwendawo yenethiwekhi yazo kunye nobuchule babo bothungelwano. Njengoko zininzi nangakumbi iinkonzo ezinjengokufikelela kwi-Intanethi, ividiyo ye-4K IPTV, iinkonzo zasekhaya ezihlakaniphile, imigca yabucala yamashishini amancinci naphakathi, ilizwi le-IMS, kunye ne-mobile backsend zithwalwa kwinethiwekhi ye-PON, imfuno ye-bandwidth kunye nenqanaba lokucokisa. ulawulo luyaqhubeka ukwanda. Ukuphuhliswa kweteknoloji yePON kunye nokuthunyelwa kwendalekoOLTizixhobo zidlala indima ebalulekileyo kuphuhliso lothungelwano lokufikelela kwibroadband..
Uhlalutyo lobume be-PON womnatha
(1)OLTukusasazwa kwezixhobo
IOLTizixhobo zabaqhubi basekhaya ngokusisiseko zaqala ukuthunyelwa kwi-2006, kwaye yayisetyenziselwa ukufikelela kwi-PON + DSL kwinqanaba lokuqala. Sekuyiminyaka engaphezu kwe-10 ukususela ekubeni i-FTTH yaqala ukuthunyelwa kwinqanaba elikhulu ngo-2009. Ngokutsho kwe-slot bandwidth, ukukwazi ukutshintshela ngokubanzi, kunye nenkxaso yebhodi ye-PON, kukho izizukulwana ezi-2-3 zeemveliso ezisebenza kwinethiwekhi ephilayo. Kwinethiwekhi ephilayo, amandla okutshintsha kwe-slot enye yesixhobo esiphambili sokutyhala sifikelela kwi-40 Gbit / s kwaye sixhasa i-10 Gbit / s EPON kunye ne-XG-PON1.
(2) Ukusasazwa kweteknoloji yePON
Ngokuthengiswa ngokuthe ngcembe kwe-10G iteknoloji yePON, iibhodi zePON ziqwalaselweOLTizixhobo kwinethiwekhi ephilayo zihlukaniswe zibe yi-EPON, GPON, 10G EPON kunye ne-XG-PON, apho i-EPON kunye ne-GPON zizona ziphambili. Ngaphantsi kokukhuthazwa kwe-China Telecom kunye ne-China Unicom ukuphucula umgangatho we-EPON, ukusetyenziswa kwezorhwebo kwe-EPON ngabaqhubi basekhaya kwakumalunga ne-2-3 iminyaka ngaphambi kwe-GPON.Ngaphambi kwe-2013, ukwakhiwa kwakulawulwa yi-EPON, kwaye kamva, ngenxa yeenzuzo. yeGPON kwi-bandwidth, ngokuthe ngcembe yalawula ukwakhiwa kweOLT. Ngokombono wokusasazwa kothungelwano olukhoyo, i-China Unicom kunye ne-China Mobile'sOLTizixhobo ikakhulu GPON, kwaye China Telecom ikakhulu EPON.
Ukwakhiwa kwe-PON ye-10G yaqala malunga ne-2015. Ngenxa yexabiso eliphezulu leemodyuli ze-optical ze-10G, ixabiso le-10G PON ONT li malunga nezihlandlo ezihlanu kwii-terminals ze-EPON / GPON ezikhoyo. Kwimeko yangoku apho i-terminal inikezelwa ngokubanzi ngumqhubi kumthengi, kwaye imfuno yenkonzo iphantsi kwe-100Mbit / s, abaqhubi abakhulu baqaphele malunga nokuthunyelwa kwezicelo ze-PON ze-10G. Okwangoku, indlela yokwakha ye-10G PON isetyenziswa kakhulu kwi-10G PON + LAN kunye nokuthunyelwa kwe-FTTH. I-10G ye-PON + LAN ikakhulu yinguqu yenethiwekhi ye-LAN yeseli ekhoyo kunye ne-PON + LAN network. Ngakolunye uhlangothi, sombulula ukunqongophala kwe-bandwidth okubangelwa inani eliphezulu labasebenzisi bokufikelela; Ngakolunye uhlangothi, ngenxa yokuba abasebenzisi abaninzi babelana ngexabiso leemodyuli ze-optical kwi-MDU, ixabiso elipheleleyo alinyuki kakhulu xa lithelekiswa nenethiwekhi ye-PON + LAN, ngoko isetyenziswe kwisikali, kwaye ngokobuchwepheshe i-10G PON kunye ne-XG-PON isetyenziswa. . Ukwakhiwa kwe-10G PON FTTH ngokuyinhloko ngumqhubi wekhaya we-gigabit oqhutywe ngabaqhubi abahlukeneyo, kwaye injongo ephambili kukupapasha kunye nokuqinisekisa iimveliso ze-10G PON FTTH.
Malunga ne-10G (i-gigabit elishumi) iteknoloji ye-Ethernet kunye nesicelo ngamanqaku olwazi angentla, malunga neOLTizixhobo ezikhankanywe apha ngasentla eShenzhen HDV Phoelectron Technology Ltd. zezodidi oludumileyo lweemveliso zonxibelelwano, ezifana:OLT tshintsha, GPONOLT, EPONOLT, ukukhanya CatOLT, njl., okungasentlaOLTizixhobo zingasetyenziswa kwiindawo ezahlukeneyo, kwiimfuno ezahlukeneyo zabasebenzisi ukunika ukhetho olungakumbi, wamkelekile ukuza kuqonda, siya kubonelela ngeyona nkonzo isemgangathweni.
