Ka palo e ntseng e eketseha ea lits'ebeletso tse tsamaisoang ke Passive Optical Networks (PON), ho bile bohlokoa ho khutlisetsa lits'ebeletso kapele kamora ho hloleha ha mela. Theknoloji ea ho fetola ts'ireletso ea PON, e le tharollo ea mantlha ea ho netefatsa tsoelo-pele ea khoebo, e ntlafatsa haholo botšepehi ba marang-rang ka ho fokotsa nako ea tšitiso ea marang-rang ho ea ho 50ms ka mekhoa e bohlale ea ho fokotsa chelete.
Moko oaPONts'ireletso ea ts'ireletso ke ho netefatsa tsoelo-pele ea khoebo ka mekhoa e 'meli ea "backup" ea mantlha.
Ts'ebetso ea eona ea ts'ebetso e arotsoe ka mekhahlelo e meraro: pele, sethaleng sa ho lemoha, tsamaiso e ka khetholla ka nepo ho senyeha ha fiber kapa ho hlōleha ha thepa ka har'a 5ms ka ho kopanya ho hlahloba matla a optical, tlhahlobo ea lebelo la phoso, le melaetsa ea ho otla ha pelo; Nakong ea mohato oa ho fetola, ketso ea ho fetola e hlahisoa ka mokhoa o itekanetseng ho latela leano le lokiselitsoeng esale pele, ka ho lieha ho fetoha ho tloaelehileng ho laoloang ka hare ho 30ms; Qetellong, mohatong oa ho hlaphoheloa, ho falla ho se nang moeli ha mekhoa ea khoebo ea 218 e kang litlhophiso tsa VLAN le kabo ea li-bandwidth e finyelloa ka mochine oa ho lumellana ha tlhophiso, ho netefatsa hore basebelisi ba ho qetela ha ba tsebe ka ho feletseng.
Lintlha tsa 'nete tsa ho tsamaisoa li bontša hore ka mor'a ho sebelisa theknoloji ena, nako ea selemo le selemo ea ho sitisoa ha marang-rang a PON e ka fokotsoa ho tloha lihora tsa 8.76 ho isa metsotsoana ea 26,' me ho tšepahala ho ka ntlafatsoa ka makhetlo a 1200. Mekhoa ea hajoale ea ts'ireletso ea PON e kenyelletsa mefuta e mene, Mofuta oa A ho ea ho Mofuta oa D, o theha sistimi e felletseng ea tekheniki ho tloha ho ea mantlha ho isa ho e tsoetseng pele.
Mofuta oa A (Trunk Fiber Redundancy) o amohela moralo oa likou tse peli tsa PON tse lehlakoreng la OLT tse arolelanang li-chips tsa MAC. E theha sehokelo sa mantlha le se bolokang fiber optic ka 2: N splitter le li-switches ka har'a 40ms. Litšenyehelo tsa eona tsa phetoho ea hardware li nyoloha feela ka 20% ea lisebelisoa tsa fiber, e leng se etsang hore e tšoanelehe ka ho khetheha bakeng sa maemo a makhutšoane a phetiso ea libaka tse kang marang-rang a khamphase. Leha ho le joalo, hoa lokela ho hlokomeloa hore morero ona o na le meeli holim'a boto e le 'ngoe,' me ho hlōleha ha ntlha e le 'ngoe ea ho arohana ho ka baka tšitiso ea li-link tse peli.
Mofuta oa B o tsoetseng pele haholo (OLT port redundancy) o kenya likou tse peli tsa li-chips tsa MAC tse ikemetseng ka lehlakoreng la OLT, o ts'ehetsa mokhoa oa ho boloka o batang / o futhumetseng, 'me o ka fetisetsoa ho meaho e 'meli ea moamoheli ho pholletsa le OLTs. HoFTTHteko ea boemo, tharollo ena e fihletse ho falla ha synchronous ea 128 ONUs ka har'a 50ms, ka tekanyo ea tahlehelo ea pakete ea 0. E 'nile ea sebelisoa ka katleho tsamaisong ea ho fetisetsa video ea 4K mocheng oa phatlalatso oa liprofinse le thelevishene.
Mofuta oa C (tšireletso e feletseng ea fiber) e sebelisoa ka mokokotlo / ho ajoa ha fiber dual path deployment, ho kopantsoe le ONU dual optical module design, ho fana ka tšireletso ea ho qetela bakeng sa mekhoa ea khoebo ea lichelete. E fihletse ho hlaphoheloa ha liphoso tsa 300ms tekong ea khatello ea phapanyetsano ea li-stock, ho kopana ka botlalo le maemo a mamello a sub second interruption a litsamaiso tsa khoebo ea securities.
Mofuta oa D oa boemo bo phahameng ka ho fetesisa (full system hot backup) o amohela moralo oa boemo ba sesole, o nang le taolo e habeli le meaho ea lifofane tse peli bakeng sa OLT le ONU, e ts'ehetsang phepelo ea likarolo tse tharo tsa fiber/port/power supply. Nyeoe ea ho romelloa ha 5G base station backhaul network e bonts'a hore tharollo e ntse e ka boloka ts'ebetso ea phetoho ea boemo ba 10ms maemong a feteletseng a -40 ℃, ka nako ea tšitiso ea selemo le selemo e laoloang ka har'a metsotsoana ea 32, 'me e fetile MIL-STD-810G setifikeiti sa sesole.
Ho fihlella phetoho e se nang moeli, liphephetso tse peli tse kholo tsa tekheniki li hloka ho hlōloa:
Mabapi le khokahano ea tlhophiso, sistimi e nka theknoloji e fapaneng ea ho hokahanya e eketsang ho netefatsa hore li-parameter tse 218 tse joalo ka maano a VLAN le QoS lia ts'oana. Ka nako e ts'oanang, e hokahanya data e matla joalo ka tafole ea aterese ea MAC le DHCP e hiriloeng ka mokhoa o potlakileng oa ho pheta-pheta, 'me ka mokhoa o se nang seam e rua linotlolo tsa ts'ireletso tse ipapisitseng le mocha oa encryption oa AES-256;
Mokhahlelong oa ho hlaphoheloa ha litšebeletso, ho entsoe mokhoa oa tiiso ea makhetlo a mararo - ho sebelisoa mokhoa o potlakileng oa ho sibolla ho hatella nako ea ho ngolisa ONU ho fihlela ka metsotsoana ea 3, algorithm e bohlale ea drainage e thehiloeng ho SDN ho finyella kemiso e nepahetseng ea sephethephethe, le ho lekanya ka mokhoa o itekanetseng oa mekhahlelo e mengata e kang matla a optical / tieho.
Nako ea poso: Jun-19-2025