Ngenxa yokwanda kwenani leenkonzo ezithwalwa yiPassive Optical Networks (PON), kuye kwaba yinto ebalulekileyo ukubuyisela ngokukhawuleza iinkonzo emva kokusilela kwemigca. Itekhnoloji yokutshintsha ukhuseleko lwePON, njengesisombululo esiphambili sokuqinisekisa ukuqhubeka kweshishini, iphucula kakhulu ukuthembeka kwenethiwekhi ngokunciphisa ixesha lokuphazamiseka kwenethiwekhi ukuya ngaphantsi kwe-50ms ngeendlela ezikrelekrele zokubuyisela idatha.
Ingongoma yeI-PONUtshintsho lokhuseleko kukuqinisekisa ukuqhubeka kweshishini ngokusebenzisa uyilo lweendlela ezimbini "eziphambili + ezigcina idatha".
Umsebenzi wayo wahlulwe ngamanqanaba amathathu: okokuqala, kwinqanaba lokufumanisa, inkqubo inokuchonga ngokuchanekileyo ukwaphuka kwefayibha okanye ukusilela kwezixhobo ngaphakathi kwe-5ms ngokudibanisa ukujonga amandla okukhanya, uhlalutyo lwesantya seempazamo, kunye nemiyalezo yokubetha kwentliziyo; Ngexesha lesigaba sokutshintsha, isenzo sokutshintsha siqaliswa ngokuzenzekelayo ngokusekelwe kwisicwangciso esicwangcisiweyo kwangaphambili, kunye nokulibaziseka okuqhelekileyo kokutshintsha okulawulwa ngaphakathi kwe-30ms; Okokugqibela, kwinqanaba lokubuyisela, ukufuduka okungenamthungo kweeparamitha zeshishini ezingama-218 ezifana nezicwangciso ze-VLAN kunye nokwabiwa kwebhendiwedi kufezekiswa ngenjini yokuvumelanisa uqwalaselo, ukuqinisekisa ukuba abasebenzisi bokugqibela abazi kwaphela.
Idatha yokwenyani yokusasazwa ibonisa ukuba emva kokusebenzisa obu buchwepheshe, ixesha lokuphazamiseka konyaka kweenethiwekhi ze-PON linokwehliswa ukusuka kwiiyure eziyi-8.76 ukuya kwimizuzwana engama-26, kwaye ukuthembeka kunokuphuculwa ngamaxesha ali-1200. Iindlela zokukhusela ze-PON eziphambili ngoku ziquka iintlobo ezine, Uhlobo A ukuya kuhlobo D, ezenza inkqubo epheleleyo yobugcisa ukusuka kwesisiseko ukuya kwephambili.
Uhlobo A (Trunk Fiber Redundancy) lusebenzisa uyilo lweeports ze-PON ezimbini kwiitships ze-OLT ezikwabelana nge-MAC. Luseka ikhonkco le-fiber optic eliphambili neligcinayo nge-splitter ye-2: N kwaye lutshintsha ngaphakathi kwe-40ms. Ixabiso layo lokuguqula izixhobo linyuka nge-20% kuphela yezixhobo zefayibha, nto leyo eyenza ukuba ifaneleke ngakumbi kwiimeko zokusasaza umgama omfutshane ezifana neenethiwekhi zekhampasi. Nangona kunjalo, kufuneka kuqatshelwe ukuba le nkqubo inemida kwibhodi enye, kwaye ukungaphumeleli kwenqaku elinye kwe-splitter kunokubangela ukuphazamiseka kwekhonkco ezimbini.
Uhlobo B oluphucukileyo (i-OLT port redundancy) lusebenzisa ii-dual ports zee-MAC chips ezizimeleyo kwicala le-OLT, luxhasa imo yogcino olubandayo/olufudumeleyo, kwaye lunokwandiswa kwisakhiwo se-dual host kuzo zonke ii-OLT.I-FTTHUvavanyo lwemeko, esi sisombululo sifikelele ekufudukeni okulinganayo kwe-128 ONUs ngaphakathi kwe-50ms, kunye nezinga lokulahleka kwepakethi eliyi-0. Sisetyenziswe ngempumelelo kwinkqubo yokusasaza ividiyo ye-4K kwinethiwekhi yosasazo kunye nomabonakude yephondo.
Uhlobo C (ukhuseleko olupheleleyo lwefayibha) lusetyenziswa ngokusebenzisa indlela yokubeka i-backbone/distributed fiber dual path, kunye noyilo lwe-ONU dual optical module, ukubonelela ngokhuseleko oluvela ekupheleni kwiinkqubo zorhwebo lwezemali. Lufikelele kwi-300ms fault recovery kuvavanyo loxinzelelo lwe-stock exchange, luhlangabezana ngokupheleleyo nomgangatho wokunyamezelana kwe-sub second interrupt weenkqubo zorhwebo lwe-securities.
Uhlobo D oluphezulu (inkqubo epheleleyo eshushu yogcino) lusebenzisa uyilo lomgangatho womkhosi, olunolawulo oluphindwe kabini kunye noyilo lweplani ezimbini kuzo zombini i-OLT kunye ne-ONU, oluxhasa ukuphindaphinda kwe-fiber/port/power supply enamaleya amathathu. Ityala lokufakwa kwenethiwekhi ye-backhaul yesitishi sesiseko se-5G libonisa ukuba isisombululo sisenokugcina ukusebenza kokutshintsha kwenqanaba le-10ms kwiindawo ezigqithisileyo ze--40 ℃, kunye nexesha lokuphazamiseka konyaka elilawulwa kwimizuzwana engama-32, kwaye liphumelele isiqinisekiso somgangatho womkhosi se-MIL-STD-810G.
Ukuze kufezekiswe utshintsho olungenamthungo, kufuneka koyiswe imingeni emibini emikhulu yobugcisa:
Ngokuphathelele ulungelelwaniso loqwalaselo, inkqubo isebenzisa iteknoloji yolungelelwaniso oludibeneyo ukuqinisekisa ukuba iiparameter ezingama-218 ezingashukumiyo ezifana nemigaqo-nkqubo ye-VLAN kunye ne-QoS ziyahambelana. Kwangaxeshanye, ivumelanisa idatha eguquguqukayo efana netafile yedilesi ye-MAC kunye ne-DHCP ngokusebenzisa indlela yokuphinda idlale ngokukhawuleza, kwaye ifumana amaqhosha okhuseleko ngokungenamthungo ngokusekelwe kwitshaneli yokubethela ye-AES-256;
Kwisigaba sokubuyisela inkonzo, indlela yesiqinisekiso esiphindwe kathathu iye yayilwa - kusetyenziswa iprotokholi yokufumanisa ngokukhawuleza ukucinezela ixesha lokubhalisa kwakhona le-ONU kwimizuzwana emi-3, i-algorithm ekrelekrele yokukhupha amanzi esekelwe kwi-SDN ukufezekisa ucwangciso oluchanekileyo lwethrafikhi, kunye nokulinganisa ngokuzenzekelayo iiparameter ezininzi ezifana namandla/ukulibaziseka kwe-optical.
Ixesha leposi: Juni-19-2025