Hei whakatupuranga hou o te hangarau urunga muka whatu, he nui ngā painga o XPON i roto i te ārai-whakararuraru, ngā āhuatanga whānui, te tawhiti urunga, te tiaki me te whakahaere, me ētahi atu. Kua aro nui ngā kaiwhakahaere o te ao ki tana whakamahinga. He tino pakari te hangarau urunga whatu XPON. Ko te EPON me te GPON e rua ngā mea e titoa ana e te tari matua OLT, ngā taputapu ONU taha-kaiwhakamahi me te whatunga tohatoha whatu kore mahi ODN. I roto i ēnei, ko te whatunga me ngā taputapu ODN he wāhanga nui o te urunga whakauru XPON, e uru ana ki te hanganga me te tono o tētahi whatunga muka whatu hou. Ko ngā taputapu ODN e pā ana me ngā utu whatunga kua noho hei āhuatanga nui e aukati ana i ngā tono XPON.
Ariā
I tēnei wā, ko ngā hangarau xPON e tino pai ana mō te umanga ko te EPON me te GPON.
Ko te hangarau GPON (Gigabit-CapablePON) te whakatupuranga hou o te paerewa urunga whatu uru whānui e hangai ana ki te paerewa ITU-TG.984.x. He maha ngā painga o tēnei hangarau, pērā i te whānui o te whānui, te whai huatanga, te whānuitanga o te kapinga, me ngā atanga kaiwhakamahi whai rawa. E whakaaro ana ngā kaiwhakahaere he hangarau tino pai tēnei hei whakatutuki i te whānui me te whakawhiti whānui o ngā ratonga whatunga urunga. Ko te tere mōrahi o te GPON i raro iho ko te 2.5Gbps, ko te raina whakarunga ko te 1.25Gbps, ā, ko te ōwehenga wehenga mōrahi ko te 1:64.
Ko te EPON he momo hangarau urunga whānui hou, e whakatinana ana i te urunga ratonga whakauru o ngā raraunga, reo me te ataata mā te pūnaha urunga muka whatu kotahi, ā, he pai te whai huatanga ohaoha. Ka noho a EPON hei hangarau urunga whānui matua. Nā ngā āhuatanga o te hanganga whatunga EPON, ngā painga motuhake o te urunga whānui ki te kāinga, me te whakakotahitanga taiao me ngā whatunga rorohiko, e whakaae ana ngā tohunga puta noa i te ao ko ngā whatunga whatu kore mahi te whakatinanatanga o "ngā whatunga e toru i roto i te kotahi" me te otinga ki te huarahi mōhiohio. Ko te reo tuku pai rawa atu mō te "maero whakamutunga".
Ko te pūnaha whatunga PON o te whakatupuranga e whai ake nei xPON:
Ahakoa he rerekē ngā hangarau o EPON me GPON, he rite tonu te āhua whatunga me te hanganga whakahaere whatunga. E aro ana rāua ki te tono whatunga urunga whatu kotahi, ā, ehara i te mea kāore i te kore-huihui. Ka taea e te pūnaha whatunga PON o te whakatupuranga hou, xPON, te tautoko i te wā kotahi. Ka taea e ēnei paerewa e rua, arā, ngā taputapu xPON te whakarato i ngā momo urunga PON rerekē e ai ki ngā hiahia rerekē o ngā kaiwhakamahi, me te whakaoti i te raruraru o te kore hototahi o ngā hangarau e rua. I te wa ano, ka whakaratohia e te pūnaha xPON he tūāpapa whakahaere whatunga kotahi e taea ai te whakahaere i ngā hiahia pakihi rerekē, te whakatutuki i ngā āheinga tautoko ratonga-katoa (tae atu ki te ATM, Ethernet, TDM) me te taurangi QoS tino pakari, me te tautoko i te tuku pouaka whakaata taura i raro iho mā te WDM; i te wa ano, ka taea e ia te tautuhi aunoa i te EPON, te tāpiri me te tango i te kāri Uru GPON; he tino hototahi ki ngā whatunga EPON me GPON i te wa kotahi. Mō ngā kaiwhakahaere whatunga, ko te whakahaere me te whirihoranga katoa he mea mō te pakihi, ahakoa te rerekētanga hangarau i waenga i te EPON me te GPON. Arā, he mārama te whakatinanatanga hangarau o te EPON me te GPON ki te whakahaere whatunga, ā, ko te rerekētanga i waenganui i te rua ka tiakina, ka whakaratohia ki te atanga kotahi o te paparanga o runga. Ko tētahi o ngā painga nui o tēnei pūnaha ko te tūāpapa whakahaere whatunga kotahi, e tino whakatinana ana i te whakakotahitanga o ngā hangarau PON rerekē e rua i te taumata whakahaere whatunga.
Ngā tawhā matua me ngā tohu hangarau
Ko ngā tawhā matua o te whatunga xPON e whai ake nei:
●Ngā āheinga tautoko maha-ratonga: kia tutuki ai ngā āheinga tautoko ratonga-katoa (tae atu ki te ATM, Ethernet, TDM) me te taurangi QoS tino pakari, mō te arotau pakihi, tautoko i te tuku pouaka whakaata taura hononga-iho mā te WDM;
●Te tautuhi me te whakahaere aunoa i ngā kāri urunga EPON me GPON;
●Tautoko i te āheinga peka 1:32;
●Kāore te tawhiti tuku e neke atu i te 20 kiromita;
●Te tere raina ōrite o runga me raro 1.244Gbit/s. Tautoko i te mahi tatauranga waka tauranga;
●Tautoko i te mahi tohatoha whānui hihiri me te pūmau.
●Tautoko i ngā mahi maha-pānui me te maha-pānui
Ngā tohu hangarau matua o te whatunga xPON:
(1) Te kaha o te pūnaha: He matua whakawhiti IP nui te kaha (30G) kei te pūnaha hei whakarato i te atanga whatunga Ethernet 10G, ā, ka taea e ia OLT te tautoko i ngā whatunga PON e 36.
(2) Atanga maha-ratonga: Tautoko i te TDM, ATM, Ethernet, CATV, me te whakarato i te taurangi QoS tino pakari, ka taea te whakauru katoa i ngā ratonga o nāianei. He tino tautoko i te whakahoutanga maeneene o te pakihi.
(3) Ngā whakaritenga mō te pono me te wātea o te pūnaha: Ka whakaratohia e te pūnaha he tikanga whakawhiti tiaki 1+1 hei whakatutuki i ngā whakaritenga o te whatunga whakawhitiwhiti kōrero mō te pono o te whatunga, ā, he iti iho i te 50ms te wā whakawhiti.
(4) Awhe whatunga: ara whatunga 10,20Km ka taea te whirihora, ka tutuki katoa i ngā whakaritenga o te whatunga urunga.
(5) Pūhara whakahaere pūnaha kotahi: Mō ngā tikanga urunga rerekē, me whai pūhara whakahaere whatunga kotahi
Hanganga
Ko te pūnaha whatunga muka whatu korekore he pūnaha tuku whānui muka whatu e titoa ana e te pito raina whatu (OLT), te whatunga tohatoha whatu (ODN), me te wae whatunga whatu (ONU), e kiia nei ko te pūnaha PON. Kei te whakaatuhia te tauira tohutoro pūnaha PON i te Pikitia 1.
Ka whakamahia e te pūnaha PON he hanganga whatunga tohu-ki-maha-ira, ka whakamahia he whatunga tohatoha whatu kore mahi hei reo tuku, ka whakamahia he aratau pāhoho i roto i te hononga iho, me te aratau mahi TDM i roto i te hononga ake, e whakatutuki ana i te tuku tohu rua-ara kotahi-muka. Ki te whakatauritea ki te whatunga urunga tuku iho, ka taea e te pūnaha PON te whakaiti i te whakapaunga o te urunga ki te rūma rorohiko me ngā taura whatu urunga, te whakanui ake i te kapinga whatunga o te pūnga urunga, te whakanui ake i te tere urunga, te whakaiti i te tere rahunga o ngā raina me ngā taputapu o waho, me te whakapai ake i te pono o te pūnaha. I te wa ano, ka penapenahia hoki ngā utu tiaki, nō reira ko te pūnaha PON te hangarau tono matua o te whatunga urunga rua-ara NGB.
E ai ki ngā momo whakatakotoranga tuku tohu o te pūnaha, ka taea te kī ko xPON, pērā i te APON, BPON, EPON, GPON me te WDM-PON. Kua whānuitia te whakamahinga o te GPON me te EPON puta noa i te ao, ā, he maha ngā tono nui i roto i te whakawhiti i ngā whatunga reo irirangi me te pouaka whakaata e rua ngā huarahi. Ko te WDM-PON he pūnaha e whakamahi ana i ngā hongere roangaru motuhake i waenga i te OLT me te ONU hei hanga hononga pūwāhi-ki-pūwāhi. Ki te whakatauritea ki ngā TDM- pērā i te EPON me te GPON, he pai ngā painga o te PON me te WDM-PON, te whānui o te hononga, te mārama o ngā kawa, te haumaru me te pono, me te kaha o te tauine. Koinei te huarahi whanaketanga ā muri ake nei. I roto i te wā poto, nā ngā mātāpono uaua o te WDM-PON, ngā utu taputapu teitei, me ngā utu pūnaha teitei, kāore anō kia rite ki ngā tikanga mō ngā tono nui.
Ngā tohu hangarau matua o te xPON
①Te kaha o te pūnaha: He matua whakawhiti IP nui te kaha o te pūnaha (30G), he atanga whatunga Ethernet 10G, ā, ka taea e ia OLT te tautoko i te 36 PON;
②Atanga maha-ratonga: tautoko i te TDM, ATM, Ethernet, CATV, me te whakarato i te taurangi QoS tino pakari, ka taea te mimiti katoa i te pakihi o nāianei, me te tautoko pono i te whakapai ake maeneene o te pakihi;
③ Ngā whakaritenga mō te pono me te wātea o te pūnaha: Ka whakaratohia e te pūnaha he tikanga whakawhiti tiaki 1+1 hei whakatutuki i ngā whakaritenga o te whatunga whakawhitiwhiti kōrero mō te pono o te whatunga, ā, he iti iho i te 50m te wā whakawhiti;
④Awhe whatunga: Ka taea te whirihora i te diameter whatunga 10-20km kia tutuki katoa ai ngā whakaritenga o te whatunga urunga;
⑤Tūāpapa pūmanawa whakahaere pūnaha kotahi: He tūāpapa whakahaere whatunga kotahi tōna mō ngā tikanga urunga rerekē.
He maha ngā tauira xPON ONU, xPON ONT a HUANET, tae atu ki te 1GE xPON ONU, 1GE+1FE+CATV+WIFI xPON ONT, 1GE+1FE+CATV+POTS+WIFI xPON ONU, 1GE+3FE+POTS+WIFI xPON ONT. E whakarato ana hoki mātou i te Huawei xPON ONT.
Wā tuku: Pipiri-24-2021