I te piki haere o ngā ratonga e tukuna ana e ngā Whatunga Whatu Āhuakore (PON), kua tino hira te whakaora wawe i ngā ratonga i muri i ngā pakaru o te raina. Ko te hangarau whakawhiti tiaki PON, hei otinga matua hei whakarite i te haere tonu o te pakihi, ka whakapai ake i te pono o te whatunga mā te whakaiti i te wā motumotu whatunga ki raro iho i te 50ms mā roto i ngā tikanga tauutuutu atamai.
Ko te mauri oPONKo te whakawhiti tiaki he whakarite i te haere tonu o te pakihi mā te hoahoa ara rua o te "tuatahi+tārua".
E toru ngā wāhanga o tana tukanga mahi: tuatahi, i te wāhanga kimi, ka taea e te pūnaha te tautuhi tika i te pakaru o te muka, te rahunga rānei o te taputapu i roto i te 5ms mā te whakakotahitanga o te aroturuki mana whatu, te tātari tere hapa, me ngā karere ngakau; I te wā whakawhiti, ka whakahohehia aunoa te mahi whakawhiti i runga i te rautaki kua whirihorahia i mua, me te whakaroa whakawhiti noa e whakahaeretia ana i roto i te 30ms; Hei whakamutunga, i te wāhanga whakaora, ka tutuki te hekenga maeneene o ngā tawhā pakihi 218 pēnei i ngā tautuhinga VLAN me te tohatoha whānui mā te miihini tukutahi whirihoranga, kia kore ai e mōhio ngā kaiwhakamahi mutunga.
E whakaatu ana ngā raraunga whakatinanatanga tuturu, i muri i te whakamahi i tēnei hangarau, ka taea te whakaiti i te roanga o te motumotu ā-tau o ngā whatunga PON mai i te 8.76 hāora ki te 26 hēkona, ā, ka taea te whakapai ake i te pono mā te 1200 ngā wā. Ko ngā tikanga tiaki PON matua o nāianei e whā ngā momo, Momo A ki te Momo D, e hanga ana i tētahi pūnaha hangarau katoa mai i te taketake ki te matatau.
Ko te Momo A (Trunk Fiber Redundancy) e whakamahi ana i te hoahoa o ngā tauranga PON takirua i te taha OLT e tiritiri ana i ngā maramara MAC. Ka whakatūria he hononga muka whatu tuatahi me te tārua mā te wehewehe 2:N, ā, ka huri i roto i te 40ms. Ka piki noa te utu whakawhiti taputapu mā te 20% o ngā rauemi muka, he mea tino pai mō ngā horopaki tuku tawhiti poto pēnei i ngā whatunga puni. Heoi, me mōhio he herenga tō tēnei kaupapa i runga i te papa kotahi, ā, mā te rahunga kotahi o te wehewehe ka puta he motumotu hononga takirua.
Ko te Momo B matatau ake (taupoki tauranga OLT) e whakatinana ana i ngā tauranga takirua o ngā maramara MAC motuhake i te taha OLT, e tautoko ana i te aratau tārua makariri/mahana, ā, ka taea te whakawhānui ake ki tētahi hoahoa manaaki takirua puta noa i ngā OLT. I roto i teFTTHI roto i te whakamātautau horopaki, i tutuki i tēnei otinga te hekenga tukutahi o te 128 ONU i roto i te 50ms, me te tere ngaronga mōkihi o te 0. Kua angitu te whakamahi ki tētahi pūnaha tuku ataata 4K i roto i tētahi whatunga pāpāho me te pouaka whakaata ā-rohe.
Ka whakatinanahia te Momo C (tiakitanga muka katoa) mā te whakatinanatanga ara rua muka tuara/tohatoha, me te hoahoa kōwae whatu rua ONU, hei whakarato i te tiakitanga pito-ki-pito mō ngā pūnaha hokohoko pūtea. I tutuki i a ia te whakaora hapa 300ms i roto i te whakamātautau ahotea whakawhiti hea, ā, i tutuki katoa i te paerewa manawanui haukoti iti-hekona o ngā pūnaha hokohoko hea.
Ko te Momo D taumata teitei rawa (pūnaha tārua wera katoa) e whakamahi ana i te hoahoa taumata hōia, me te hoahoa mana rua me te hoahoa papa rua mō te OLT me te ONU, e tautoko ana i te taurite paparua e toru o te muka/tauranga/pūnaha hiko. E whakaatu ana tētahi tauira whakatinanatanga o te whatunga whakahoki teihana turanga 5G ka taea tonu e te otinga te pupuri i te mahi whakawhiti taumata 10ms i roto i ngā taiao tino kino o te -40 ℃, me te wā whakamutu ā-tau e whakahaeretia ana i roto i te 32 hēkona, ā, kua paahitia e ia te tiwhikete paerewa hōia MIL-STD-810G.
Hei whakatutuki i te whakawhiti maeneene, me wikitoria e rua ngā wero hangarau nui:
Mō te tukutahi whirihoranga, ka whakamahia e te pūnaha te hangarau tukutahi pikinga rerekē hei whakarite kia ōrite ngā tawhā tūmau 218 pērā i ngā kaupapa here VLAN me QoS. I taua wā anō, ka tukutahi i ngā raraunga hihiri pērā i te ripanga wāhitau MAC me te tuku DHCP mā te tikanga tukurua tere, ā, ka whiwhi maeneene i ngā kī haumarutanga i runga i te hongere whakamunatanga AES-256;
I te wāhanga whakaora ratonga, kua hangaia he tikanga taurangi toru – mā te whakamahi i tētahi kawa kitenga tere hei whakawhāiti i te wā rēhitatanga ONU ki roto i te 3 hēkona, he pūnaha tātari atamai e hangai ana ki te SDN hei whakatutuki i te whakaritenga waka tika, me te whakatikatika aunoa i ngā tawhā maha-ahu pēnei i te mana whatu/whakaroa.
Wā tuku: Pipiri-19-2025