I roto i te hanganga whatunga muka-ki-te-kāinga (FTTH), ko ngā wehewehe whatu, hei wāhanga matua o ngā whatunga whatu kore mahi (PON), ka taea te tohatoha i te muka kotahi mā te tohatoha mana whatu ki ngā kaiwhakamahi maha, ka pā tika ki te mahi whatunga me te wheako kaiwhakamahi. Ka tātarihia e tēnei tuhinga ngā hangarau matua i roto i te whakamahere FTTH mai i ngā tirohanga e whā: te whiriwhiri hangarau wehewehe whatu, te hoahoa hoahoa whatunga, te arotau ōwehenga wehewehe, me ngā au o te heke mai.
Kōwhiringa Wehewehe Whatu: Whakataurite Hangarau PLC me FBT
1. Te Wehewehenga o te Arahiko Ngaru Mārama Papatahi (PLC):
•Tautoko roopu-katoa (1260–1650 nm), e tika ana mō ngā pūnaha roa-ngaru maha;
•Tautoko ana i te wehenga oro-teitei (hei tauira, 1×64), te ngaronga whakaurunga ≤17 dB;
•Te pumau o te pāmahana teitei (te piki me te heke o te pāmahana mai i te -40°C ki te 85°C <0.5 dB);
•He takai iti, ahakoa he nui te utu tīmatanga.
2. Te Wehewehe Taper Biconical kua Whakakotahitia (FBT):
•E tautoko ana i ngā roangaru motuhake anake (hei tauira, 1310/1490 nm);
•He iti noa te wehewehenga (i raro iho i te 1×8);
•Te piki me te heke o te mate i ngā taiao pāmahana teitei;
•He iti te utu, he pai mō ngā āhuatanga iti te tahua.
Rautaki Kōwhiringa:
I ngā wāhi tāone nui kiato (ngā whare noho teitei, ngā rohe arumoni), me whakarite kia matua whakamahia ngā wehewehe PLC kia tutuki ai ngā whakaritenga wehewehe taumata-teitei, me te pupuri tonu i te hototahi ki ngā whakahoutanga XGS-PON/50G PON.
Mō ngā āhuatanga taiwhenua, iti rānei te kiato, ka taea te whiriwhiri i ngā wehewehe FBT hei whakaiti i ngā utu whakatinanatanga tuatahi. E tohu ana ngā matapae mākete ka neke atu te wahanga mākete PLC i te 80% (LightCounting 2024), nā ōna painga tauine hangarau te nuinga.
Hoahoa Hanganga Whatunga: Te Wehewehenga Pokapū, te Wehewehenga Tohatoha rānei
1. Te Wehewehe Taumata-1 Matua
•Topology: OLT → 1×32/1×64 whakawehe (kua whakatakotoria ki roto i te rūma taputapu/FDH) → ONT.
•Ngā āhuatanga e tika ana: Ngā pokapū taone nui, ngā wāhi noho kiato.
•Ngā Painga:
- 30% te whakapainga i te whai huatanga o te taunga hapa;
- Te ngaronga wāhanga-kotahi o te 17–21 dB, e tautoko ana i te tuku 20 km;
- Te whakanui tere i te kaha mā te whakakapi i te wehewehe (hei tauira, 1×32 → 1×64).
2. Kaiwhakawehe Taumata-maha Tohatoha
•Te āhua o te whatunga: OLT → 1×4 (Taumata 1) → 1×8 (Taumata 2) → ONT, e mahi ana ki ngā whare e 32.
•Ngā āhuatanga e tika ana: Ngā whenua tuawhenua, ngā rohe maunga, ngā whenua whare iti.
•Ngā Painga:
- Ka whakaiti i ngā utu muka tuara mā te 40%;
- Tautoko ana i te tauutuutu whatunga mowhiti (te whakawhiti hapa peka aunoa);
- Ka taea te urutau ki ngā whenua uaua.
Te Arotau i te Ōwehenga Wehewehe: Te Whakataurite i te Tawhiti Tuku me ngā Whakaritenga Whānui
1. Te Whakapūmautanga o te Pūmautanga o te Kaiwhakamahi me te Whānuitanga o te Ipurangi
I raro i te XGS-PON (10G i raro iho) me te whirihoranga wehewehe 1×64, ko te whānui o te whānui mō ia kaiwhakamahi he tata ki te 156Mbps (50% te tere ōrite);
Ko ngā wāhi kiato nui me hiahia ki te Dynamic Bandwidth Allocation (DBA) me te whānuitanga o te roopu C++ hei whakarei ake i te kaha.
2. Te Whakarato Whakapai Ake Nei
Rahuihia te tawhē mana whatu ≥3dB hei whakauru i te koroheketanga o te muka;
Kōwhiria ngā wehewehe PLC me ngā ōwehenga wehewehe ka taea te whakarite (hei tauira, ka taea te whirihora 1×32 ↔ 1×64) hei karo i te hanganga koretake.
Ngā Auahatanga o te Ao me te Auahatanga Hangarau
Ko te hangarau PLC e ārahi ana i te wehewehenga ota-teitei:Nā te horapa haere o te 10G PON kua akiakihia ngā wehewehe PLC ki te whakamahi whānui, e tautoko ana i ngā whakahoutanga maeneene ki te 50G PON.
Te tango i te hoahoanga ranu:Mā te whakakotahi i te wehenga taumata kotahi i ngā tāone nui me te wehenga taumata maha i ngā rohe tāone iti ka taurite te whai huatanga me te utu o te kapinga.
Hangarau ODN atamai:Mā te eODN ka taea te whirihoranga mamao o ngā ōwehenga wehewehe me te matapae hapa, ka whakarei ake i te mohiotanga whakahaere.
Te putanga hou o te whakaurunga o te hāora hiko:Ka whakaitihia ngā utu e ngā maramara PLC monolithic 32-hongere mā te 50%, ka taea ai ngā ōwehenga wehenga tino teitei 1×128 hei whakatairanga i te whanaketanga o te tāone atamai whatu-katoa.
Mā te whiriwhiri hangarau kua whakaritea, te whakatinanatanga hoahoanga ngāwari, me te arotautanga o te ōwehenga wehewehe hihiri, ka taea e ngā whatunga FTTH te tautoko i te whakatinanatanga whānui gigabit me ngā whakaritenga whanaketanga hangarau tekau tau a meake nei.
Wā tuku: Hepetema-04-2025