Ngokunyuka kwenani leenkonzo ezithwalwa yiPassive Optical Networks (PON), kuye kwaba yinto ebalulekileyo ukubuyisela ngokukhawuleza iinkonzo emva kokungaphumeleli komgca. Ukukhusela iteknoloji yokutshintsha i-PON, njengesisombululo esisisiseko sokuqinisekisa ukuqhubeka kweshishini, kuphucula kakhulu ukuthembeka kwenethiwekhi ngokunciphisa ixesha lokuphazamiseka kwenethiwekhi ukuya ngaphantsi kwe-50ms ngokusebenzisa iindlela ezihlakaniphile zokuphindaphinda.
Undoqo weI-PONukutshintshwa kokhuseleko kukuqinisekisa ukuqhubeka kweshishini ngeendlela ezimbini zoyilo lwe "primary+backup".
I-workflow yayo ihlukaniswe ngamanqanaba amathathu: okokuqala, kwinqanaba lokufumanisa, inkqubo inokuchonga ngokuchanekileyo i-fiber breakage okanye ukungaphumeleli kwezixhobo ngaphakathi kwe-5ms ngokudibanisa amandla okubeka iliso, uhlalutyo lwezinga lempazamo, kunye nemiyalezo yokubetha kwentliziyo; Ngethuba lesigaba sokutshintsha, isenzo sokutshintsha senziwa ngokuzenzekelayo ngokusekelwe kwisicwangciso esilungiselelwe ngaphambili, kunye nokulibaziseka okuqhelekileyo okulawulwa ngaphakathi kwe-30ms; Ekugqibeleni, kwisigaba sokubuyisela, ukufuduka okungenamthungo kweeparamitha ze-218 zoshishino ezifana nezicwangciso ze-VLAN kunye nokwabiwa kwe-bandwidth kufezekiswa ngokusebenzisa i-injini yokulungelelanisa, ukuqinisekisa ukuba abasebenzisi bokugqibela abazi ngokupheleleyo.
Idatha yokuthunyelwa kwangempela ibonisa ukuba emva kokwamkela le teknoloji, ixesha lokuphazamiseka lonyaka lothungelwano lwe-PON lingancitshiswa ukusuka kwiiyure ze-8.76 ukuya kwimizuzwana ye-26, kwaye ukuthembeka kunokuphuculwa ngamaxesha angama-1200. Iindlela ezikhoyo zokukhusela i-PON zibandakanya iindidi ezine, Uhlobo lwe-A ukuya kuHlobo lwe-D, ukwenza inkqubo epheleleyo yobugcisa ukusuka kwisiseko ukuya phambili.
Uhlobo A (Trunk Fiber Redundancy) yamkela uyilo lwezibuko zePON ezimbini kwicala le-OLT lokwabelana ngeechips ze-MAC. Iseka ikhonkco eliphambili kunye ne-backup fiber optic ngokusebenzisa i-2: i-N splitter kunye nokutshintsha ngaphakathi kwe-40ms. Iindleko zayo zokuguqulwa kwehardware zonyuka kuphela nge-20% yezibonelelo zefiber, ziyenza ifaneleke ngakumbi iimeko zothumelo lomgama omfutshane ezifana nothungelwano lwekhampasi. Nangona kunjalo, kufuneka kuqatshelwe ukuba le nkqubo inezithintelo kwibhodi enye, kwaye ukungaphumeleli kwenqaku elilodwa le-splitter kunokubangela ukuphazamiseka kwekhonkco ezimbini.
Olona didi luphezulu lwe-B (i-OLT i-port redundancy) luthumela amazibuko amabini eetshiphusi ezizimeleyo ze-MAC kwicala le-OLT, ixhasa imo ebandayo/eshushu yogcino, kwaye inokwandiswa ukuya kulwakhiwo olumbini lolwakhiwo kuzo zonke ii-OLTs. KwiI-FTTHuvavanyo lwemeko, esi sisombululo siphumelele ukufuduka kwe-synchronous ye-128 ONUs ngaphakathi kwe-50ms, kunye nexabiso lokulahleka kwepakethi ye-0. Isetyenziswe ngempumelelo kwinkqubo yokuhanjiswa kwevidiyo ye-4K kwi-intanethi yephondo yosasazo kunye nomabonwakude.
Uhlobo C (ukhuseleko olupheleleyo lwefiber) lusetyenziswa ngomqolo / i-fiber esasazwayo yokuhanjiswa kwendlela emibini, idityaniswe ne-ONU yoyilo lwemodyuli ye-optical optical, ukubonelela ngokukhuselwa kokuphela kweenkqubo zokurhweba ngemali. Iphumelele i-300ms yokubuyisela kwakhona iimpazamo kuvavanyo loxinzelelo lwe-stock exchange, ukuhlangabezana ngokupheleleyo nomgangatho wesibini wokuphazamiseka wokunyamezela iinkqubo zokurhweba ngezibambiso.
Inqanaba eliphezulu lohlobo lwe-D (inkqubo epheleleyo yokugcinwa kwe-backup) ithatha idizayini yebakala lomkhosi, kunye nolawulo olumbini kunye nolwakhiwo lweenqwelomoya ezimbini ze-OLT kunye ne-ONU, ezixhasa ukuphindaphinda kwe-fiber / port / power supply. Ityala lokuthunyelwa kwe-5G isiseko se-backhaul network network ibonisa ukuba isisombululo sisenokugcina i-10ms level switching performance kwiindawo ezigqithisileyo ze-40 ℃, kunye nexesha lokuphazamiseka lonyaka elilawulwa ngaphakathi kwemizuzwana ye-32, kwaye lidlulile i-MIL-STD-810G isiqinisekiso somgangatho wezempi.
Ukufezekisa utshintsho olungenamthungo, imingeni emibini ebalulekileyo yobugcisa kufuneka yoyiswe:
Ngokumalunga nolungelelwaniso lolungelelwaniso, inkqubo ithatha itekhnoloji yokuvumelanisa okwandisiweyo ukuqinisekisa ukuba iiparamitha ezingama-218 ezimile njengeVLAN kunye nemigaqo-nkqubo yeQoS iyahambelana. Kwangaxeshanye, ingqamanisa idatha eguquguqukayo efana netafile yedilesi ye-MAC kunye ne-DHCP yokuqeshisa ngokusebenzisa indlela yokubuyisela ngokukhawuleza, kwaye izuze ngokungenamthungo izitshixo zokhuseleko ezisekelwe kwitshaneli ye-encryption ye-AES-256;
Kwinqanaba lokubuyisela inkonzo, indlela yokuqinisekisa kathathu iye yaqulunqwa - kusetyenziswa iprotocol yokufumanisa ngokukhawuleza ukucinezela ixesha lokubhalisa i-ONU kwakhona kwimizuzwana ye-3, i-algorithm ye-drainage ehlakaniphile esekelwe kwi-SDN ukufezekisa ukucwangciswa kwe-traffic ngokuchanekileyo, kunye nokulinganisa okuzenzekelayo kweeparameters ezininzi ezifana namandla okukhanya / ukulibaziseka.
Ixesha lokuposa: Jun-19-2025