Ko te DWDM me te OTN he pūnaha hangarau e rua i whakawhanakehia e te hangarau tuku wehewehenga roangaru i ngā tau tata nei: Ka taea te kī ko te DWDM te PDH o mua (tuku tohu-ki-tohu), ā, ko ngā ratonga ipurangi me te tuimotu ka oti i runga i te ODF mā roto i ngā peke pakeke; He rite te OTN ki te SDH (ngā momo Whatunga), me te mahi hononga-whiti (ahakoa he hononga-whiti o te paparanga hiko, te paparanga whatu rānei).
I te tere haere tonu o te tukanga o NGĀ IP KATOA, i tēnei wā, ahakoa te pou tuara o te motu, te pou tuara o te rohe, te pūnaha WDM whatunga ā-rohe rānei, ko te OTN te mea matua i te wā e whiriwhiri ana i ngā taputapu i te wāhanga tuatahi o te hanganga whatunga. Kua āta whakakapia ngā taputapu OTN e ngā taputapu DWDM me ōna painga ahurei (he rite ki ngā taputapu SDH e whakakapi ana i ngā taputapu PDH). Hei hangarau hou me te momo hua hou, kua noho te OTN hei arotahi o te umanga o nāianei. Ka tātarihia, ka whakatauritea hoki e tēnei tuhinga te DWDM, ngā taputapu me te hangarau OTN.
1 Ngā ariā taketake o te DWDM me te OTN
I te panonitanga o ngā whakaritenga ratonga me te matotorutanga, me whakarea ngā ratonga matotorutanga nui mā roto i ngā muka whatu (muka kotahi, muka rua rānei) kātahi ka wehea kia rerekē ngā roangaru hei tuku tawhiti. Ka puta ake te hangarau whakarea wehenga roangaru i te wā e hiahiatia ana.
Ko te DWDM he whakarea wehewehe ngaru (Wavelength Division Multiplexing), e whakarea ana i ngā tohu whatu o ngā ngaru rerekē ki roto i te muka kotahi hei tuku. Ko te hangarau WDM he hangarau wehewehe ngaru tuku iho kua tino pakari mō ngā tau tekau neke atu. Ka taea te wehewehe ki ngā āhuatanga e rua: te whakarea wehewehe ngaru taratahi (CWDM), me te āputa ngaru nui (20nm); te whakarea wehewehe ngaru matotoru (DWDM), me te āputa ngaru iti (iti iho i te 0.8nm, ōrite rānei). Nā te poto o te tawhiti tuku o te CWDM, he maha ngā taputapu DWDM e whakamahia ana i roto i ngā whatunga tuku o nāianei o ngā kaiwhakahaere rerekē.
Ko te pūnaha DWDM tuwhera kei roto i ēnei wāhanga e whai ake nei: Ka whakaoti te OTM i te uta me te tango i te ratonga mō te teihana mutunga raina whatu, ka whakaoti te OA i te tukatuka whakanui whakawhiti whatu parakore o te tohu maha-whakarea mō te teihana whakanui raina whatu, ā, ka whakaoti te OTU i te rama tohu roangaru kore-paerewa hei whakatutuki i te mahi hurihanga roangaru G .694.1(2) o te rama tohu roangaru paerewa, OMU/ODU: ka whakaoti i te maha-whakarea/te tango-maha-whakarea o te rama tohu roangaru pumau G.694.1(2), ka whakapai ake te OBA (whakakaha mana) i te mana o te tohu whatu whakakotahi mā te whakanui ake i te , kia whakanui ake ai i te mana whatu putanga o ia roangaru, ā, ka whakapai ake te OPA (whakakaha-mua) i te aro o te whiwhi o ia roangaru mā te whakanui ake i te mana whatu o te tohu maha-whakarea whakauru.
Ko te OTN he Whatunga Kawe Whatu (Whatunga Kawe Whatu), e mōhiotia ana ko te OTH (Whakapapa Kawe Whatu) i roto i te ITU-T. I whakawhanakehia i runga i te wehenga roangaru tuku iho, ā, i whakakotahi i ngā painga o te DWDM me te SDH. Ka whakauruhia ngā painga o te tukatuka rohe whatu me te rohe hiko, ka whakarato i te kaha tuku nui, te hononga roangaru/roa-iti-ngaru tino mārama me te tiaki taumata-kawe, ā, he hangarau pai rawa atu mō te tuku ratonga matūriki nui whānui. I roto i ngā tau e rima kua pahure ake nei, kua whakatinanahia e ngā kaiwhakahaere ngā taputapu OTN i runga i te tauine nui i roto i ngā whatunga tuku rerekē.
2 Te whakataurite i ngā āhuatanga hangarau o te DWDM me te OTN
Ahakoa he nui te whakapai ake a te pūnaha DWDM i te pai o te tuku o ngā muka whatu, ā, e tautoko ana hoki i te tuku o ngā ratonga whatu-rahi, nā te iti o te hangarau wehewehe roangaru, ka whirihorahia ngā roangaru ki te āhua pūwāhi-ki-pūwāhi, ā, kāore e taea te whakarerekē hihiri. Kāore i te teitei te tere whakamahinga rauemi, ā, kāore i te rawaka te ngāwari o te whakarerekētanga ratonga. Kua rerekē te rere o te pakihi, ā, he tino uaua ki te whakarerekē. Ko te whakaritenga i waenga i ngā ratonga DWDM he whakaritenga ā-tinana i runga i te ODF. Ko te whakahaere whatunga anake e aroturuki ana i te mahi o te paparanga whatu (he iti ngā paita whakahaere whatunga, ā, he māmā ngā mōhiohio whakahaere whatunga), ā, he iti noa ngā tikanga rapurongoā me te uaua nui o te tiaki.
Ka riro i te OTN te mahi tuku kaha-nui o te DWDM, ā, he ngāwari te whakarite hononga optoelectronic me ngā āheinga tiaki. Mā te whakaurunga o te hangarau ROADM, te hangarau OTH, te whakakī G.709 me te papa whakahaere, ka whakatauhia te raruraru o ngā whatunga WDM tuku iho me te kore he āheinga whakarite ratonga roangaru/roa-ngaru iti. , ngoikore te āheinga whatunga, ngoikore te āheinga tiaki me ētahi atu take. Ka whakatinanahia e te paparanga hiko te whakarite i runga i ngā roangaru iti (pēnei i te GE, 2.5G, 10G, 40G, 100G), ā, ko te whakaritenga paparanga whatu e hangai ana ki ngā roangaru 10G, 40G, 100G rānei, me te whakamahinga whānui teitei; he nui ngā paita o runga, ā, he kaha ake tana mahi OAM /P i te WDM.
Hei tāpiritanga, ka taea te whakamahi i te OTN me te DWDM i runga i te paparanga whatu, ko te rerekētanga he anga paparanga hiko tō te OTN. Nō reira, ka tāpirihia ētahi taputapu DWDM ki runga i te whatunga o nāianei me ngā anga-papa hononga-hiko, ā, ka whakahoutia ki te OTN.
3 Te whakataurite i te whatunga DWDM me te OTN
Ka ngaro ngā painga o te OTN i te whatunga whakauru o te OTN me te DWDM (he rerekē te hanganga anga mai i te WDM tuku iho, ā, ka pāngia te hononga).
I te mea ko te hononga whakawhiti whatu OTN te nuinga o te wā e whakatinanahia ana e te kōwae ROADM (kua utaina ki te pana WSS), i runga i te utu nui o ROADM, ka whakamahia a OM/OD me OADM hei hanga whatunga mowhiti me te whatunga mekameka i roto i te whatunga OTN.
Mō ngā whatunga mekameka (pērā i ngā raina matua tawhiti), kāore e tino kitea ngā painga o te OTN nā ngā ratonga takawaenga pumau me ngā tikanga tiaki, engari kei reira tonu ngā painga i ētahi āhuatanga (ko te whai huatanga o te hongere he iti ake ngā utu i te WDM tuku iho), ko te nuinga o te whatunga matua o nāianei e whakamahi ana i te DWDM me te OTN mō te whatunga honohono.
Mō te whatunga ā-rohe, nā te mea me hono pinepine ngā ratonga, me whakarerekē pinepine te hanganga whatunga me te whakarite, ā, me whakarerekē ngāwari te tikanga tiaki, me kore e taea e te WDM tuku iho te mahi pera. He mārama noa ngā painga o te whakamahi i te whatunga OTN.
Mā te OTN ka taea te whakahaere i ia roangaru o ia muka, ā, ka taea e te OTN te urutau pai ake ki te whanaketanga whatunga a meake nei.
4 Te Whakataurite i ngā Ratonga Kaimau DWDM me OTN
Ko te hiahia mō te whakawhiti hiko OTN i ahu mai i te putanga mai o te tere 10G kotahi-ngaru. Ina tae te hongere ki te 10G, ka taea e tana OTU te kawe i te 4*2.5G, 8 ki te 9 GE rānei; ka whakamahia e te DWDM te tikanga tohu-ki-tohu. Mena he iti te tono ratonga, te ahua nei he maumau te haumitanga OTU. Hei whakatutuki i tēnei, me whakauru he mahi hono-whakawhiti rite ki te SDH i runga i te DWDM, kia whanake ai te mahi hono-whakawhiti hiko o te OTN.
He āheinga whakawhiti hiko tō te OTN, arā, he āheinga whakawhiti tere-iti mō ia hongere (he rite ki te SDH). I taua wā anō, he motuhake te hononga whakawhiti whatu me te hononga whakawhiti hiko tetahi i tetahi. Mena he āheinga hononga whakawhiti whatu engari kāore he hononga whakawhiti hiko, he hononga whakawhiti hiko rānei kāore he hononga whakawhiti whatu, ka taea te kī he OTN.
Nā ngā rerekētanga o ngā tauira hanga whatunga (te utu, te matūriki ratonga me te ahunga rere), ko te tikanga whakawhiti hiko te mea e whakamahia nuitia ana i Haina, ā, ko te tikanga whakawhiti whatu te mea e whakamahia nuitia ana i tāwāhi.
5 Whakamutunga
Mā te tātari me te whakataurite i runga ake nei, ka kitea he rerekē rawa te hangarau me te tono o OTN me DWDM. Mai i te tirohanga o te kaha whakawhiti-hononga, te whānui o te ratonga me te ngāwari o te whatunga, he tino kaha te OTN, ā, ka taea e ia te whakatutuki pai ake i ngā hiahia o te whakawhiti-hononga whatunga a meake nei.
Nā te mārama o te tuku ratonga pūnaha OTN, te kaha o te whakatika hapa, te kaha ki te whakarite paparanga whatu/hiko ngāwari, te kaha ki te whakahaere tiaki me te kaha ki te whakawhanui i te kaha o ngā taputapu (kua hokohokohia ngā taputapu 80*100G), kua kore e taea te karo i ngā whatunga tuku maha.
Wā tuku: Oketopa-25-2022