Dị ka ọgbọ ọhụrụ nke teknụzụ ịnweta eriri anya, XPON nwere nnukwu uru na mgbochi mgbochi, njirimara bandwit, ohere ohere, nlekọta na njikwa, wdg. Ngwa ya adọtala mmasị dị ukwuu site n'aka ndị ọrụ ụwa.Teknụzụ nweta ngwa anya XPON bụ EPON tozuru oke yana GPON bụ nke etiti ụlọ ọrụ OLT, akụrụngwa ONU n'akụkụ onye ọrụ yana netwọk nkesa ngwa anya ODN.N'ime ha, netwọk ODN na akụrụngwa bụ akụkụ dị mkpa nke ịnweta XPON agbakwunyere, gụnyere nhazi na ntinye nke netwọk fiber optical ọhụrụ.Ngwa ODN metụtara na ọnụ ahịa netwọk aghọwo ihe dị mkpa na-egbochi ngwa XPON.
Echiche
Ugbu a, teknụzụ xPON nke ụlọ ọrụ na-enwekarị nchekwube gụnyere EPON na GPON.
Teknụzụ GPON (Gigabit-CapablePON) bụ ọgbọ ọhụrụ nke brọdband passive optical integrated access standard dabere na ọkọlọtọ ITU-TG.984.x.Ọ nwere ọtụtụ uru dị ka bandwit dị elu, arụmọrụ dị elu, nnukwu mkpuchi, na ọnụ ọgụgụ ndị ọrụ bara ụba.Ndị na-arụ ọrụ na-ewere ya dị ka teknụzụ dị mma iji nweta brọdband na mgbanwe zuru oke nke ọrụ netwọk ịnweta.Ọnụego mgbada kacha elu nke GPON bụ 2.5Gbps, ahịrị elu bụ 1.25Gbps, yana oke nkewa kachasị bụ 1:64.
EPON bụ ụdị teknụzụ ịnweta brọdband na-apụta, nke na-achọpụta nnweta ọrụ agbakwunyere nke data, olu na vidiyo site na otu usoro ịnweta eriri anya, ma nwee ezigbo arụmọrụ akụ na ụba.EPON ga-abụ teknụzụ ịnweta brọdband bụ isi.N'ihi njirimara nke usoro netwọkụ EPON, uru pụrụ iche nke ịnweta brọdband n'ụlọ, yana ngwakọta organic eke na netwọkụ kọmputa, ndị ọkachamara n'ụwa niile kwenyere na netwọkụ anya na-agafe agafe bụ mmezu nke "netwọọdụ atọ n'otu n'otu" na ngwọta maka okporo ụzọ ozi.Usoro mgbasa ozi kacha mma maka "mile ikpeazụ".
Sistemụ netwọkụ PON na-esote xPON:
Ọ bụ ezie na EPON na GPON nwere teknụzụ dị iche iche nke ha, ha nwere otu topology netwọk na nhazi njikwa netwọk yiri ya.Ha abụọ gbakwasara n'otu ngwa netwọkụ nnweta anya na ọ bụghị njikọta.Sistemụ netwọk PON nke ọgbọ na-abịa xPON nwere ike ịkwado n'otu oge.Ụkpụrụ abụọ a, ya bụ, ngwá ọrụ xPON nwere ike ịnye ụdị PON dị iche iche dị ka mkpa dị iche iche nke ndị ọrụ si dị, ma dozie nsogbu nke enweghị nkwekọrịta nke teknụzụ abụọ ahụ.N'otu oge ahụ, usoro xPON na-enye usoro njikwa netwọk dị n'otu nke nwere ike ijikwa mkpa azụmahịa dị iche iche, ghọta ọrụ zuru oke (gụnyere ATM, Ethernet, TDM) ikike nkwado na nkwenye QoS siri ike, ma kwado mgbasa ozi TV nke ala site na WDM;N'otu oge ahụ, ọ nwere ike ịchọpụta EPON na-akpaghị aka, gbakwunyere ma wepụ kaadị GPON Access;ọ dabara n'ezie na netwọk EPON na GPON n'otu oge.Maka ndị njikwa netwọkụ, njikwa na nhazi niile bụ maka azụmaahịa, n'agbanyeghị ọdịiche teknụzụ dị n'etiti EPON na GPON.Nke ahụ bụ, mmejuputa teknụzụ nke EPON na GPON doro anya na njikwa netwọkụ, na ọdịiche dị n'etiti abụọ ahụ na-echebe ma nye ya na interface jikọrọ ọnụ nke elu-layer.Usoro njikwa netwọkụ jikọtara ọnụ bụ otu n'ime uru kachasị ukwuu nke sistemụ a, nke na-achọpụta n'ezie njikọta nke teknụzụ PON abụọ dị iche iche na ọkwa njikwa netwọkụ.
Isi paramita na ihe ngosi teknụzụ
Ihe ndị bụ isi nke netwọk xPON bụ ndị a:
●Ikike nkwado ọtụtụ ọrụ: iji nweta ọrụ zuru oke (gụnyere ATM, Ethernet, TDM) ikike nkwado na nkwenye QoS siri ike, maka njikarịcha azụmahịa, na-akwado mgbasa ozi TV downlink site na WDM;
●Nchọpụta akpaaka na njikwa nke kaadị EPON na GPON;
● Nkwado 1:32 ikike alaka;
● Ogologo nnyefe abụghị ihe karịrị kilomita 20;
● Ọnụego ahịrị symmetrical nke dị n'elu na nke mgbada 1.244Gbit/s.Na-akwado ọrụ ọnụ ọgụgụ okporo ụzọ ọdụ ụgbọ mmiri;
● Kwado ọrụ ikere òkè bandwidth na static.
● Kwado ọrụ multicast na multicast
Ihe ngosi teknụzụ bụ isi nke netwọk xPON:
(1) Sistemụ ikike: Usoro ahụ nwere nnukwu ikike ịgbanwee IP (30G) iji nye netwọk netwọk 10G Ethernet, na OLT ọ bụla nwere ike ịkwado netwọk 36 PON.
(2) Multi-service interface: Nkwado TDM, ATM, Ethernet, CATV, ma na-enye nkwa QoS siri ike, nke nwere ike ịgụnye ọrụ ndị dị adị n'ụzọ zuru ezu.Ọ na-akwado n'ezie nkwalite nke azụmahịa.
(3) Sistemụ ntụkwasị obi dị elu na ihe nnweta chọrọ: Usoro ahụ na-enye usoro ngbanwe nchekwa nchekwa 1 + 1 nhọrọ iji mezuo ihe achọrọ nke netwọkụ nkwukọrịta maka ntụkwasị obi netwọkụ, yana oge mgbanwe na-erughị 50ms.
(4) Oke netwọk: configurable 10,20Km netwọk ụzọ, zuru ezu izute chọrọ nke netwọk ohere.
(5) sọftụwia njikwa sistemu ejikọtara ọnụ: Maka ụzọ nnweta dị iche iche, nwee usoro njikwa netwọkụ jikọtara ọnụ
Nhazi
Sistemụ netwọọdụ eriri anya na-agafe agafe bụ sistemụ mgbasa ozi eriri anya nke mejupụtara ọdụ eriri anya (OLT), netwọk nkesa anya (ODN), na ngalaba netwọkụ anya (ONU), nke akpọrọ sistemụ PON.E gosipụtara ụdị ntụaka sistemụ PON na eserese 1.
Sistemụ PON na-anabata usoro netwọkụ isi-na-multipoint, na-eji netwọọkụ nkesa anya na-agafe agafe dị ka mgbasa ozi mgbasa ozi, na-eji ọnọdụ mgbasa ozi na downlink, yana ọnọdụ TDM na-arụ ọrụ na uplink, nke na-achọpụta nnyefe mgbaàmà bidirectional otu-fiber.N'iji ya na netwọk ohere ọdịnala, usoro PON nwere ike ibelata oriri nke ịnweta ụlọ kọmputa na ịnweta eriri anya, mee ka mkpuchi netwọk nke oghere oghere, dịkwuo ọnụ ọgụgụ ohere, belata ọdịda nke ahịrị na akụrụngwa mpụga, na melite ntụkwasị obi nke usoro.N'otu oge ahụ, ọ na-echekwa ụgwọ ọrụ mmezi, ya mere, usoro PON bụ isi teknụzụ ngwa ngwa nke NGB ụzọ abụọ ịnweta netwọk.
Dị ka usoro mgbasa ozi dị iche iche nke usoro ahụ si dị, enwere ike ịkpọ ya xPON, dị ka APON, BPON, EPON, GPON na WDM-PON.GPON na EPON etinyela ọtụtụ ebe gburugburu ụwa, enwekwara nnukwu ngwa na mgbanwe nke redio na telivishọn netwọk ụzọ abụọ.WDM-PON bụ sistemu nke na-eji ọwa ogologo ebili mmiri nọọrọ onwe ya n'etiti OLT na ONU iji mepụta njikọ n'isi ruo n'isi.Tụnyere TDM- dị ka EPON na GPON, PON na WDM-PON nwere uru nke elu bandwit, protocol nghọta, nchekwa na ntụkwasị obi, na ike scalability.Ha bụ ntụziaka mmepe n'ọdịnihu.N'oge dị mkpirikpi, n'ihi ụkpụrụ mgbagwoju anya nke WDM-PON, ọnụ ahịa ngwaọrụ dị elu, na ọnụ ahịa usoro dị elu, ọ nwebeghị ọnọdụ maka nnukwu ngwa ngwa.
Ihe ngosi teknụzụ kachasị nke xPON
① Sistemụ ikike: Usoro ahụ nwere nnukwu ikike ịgbanwe isi IP (30G), na-enye ntanetị netwọkụ 10G Ethernet, na OLT ọ bụla nwere ike ịkwado 36 PON;
②Otutu ọrụ interface: na-akwado TDM, ATM, Ethernet, CATV, ma na-enye siri ike QoS nkwa, nwere ike banye zuru ezu azụmahịa dị adị, na n'ezie na-akwado ezigbo nkwalite nke azụmahịa;
③ Sistemụ ntụkwasị obi dị elu na ihe nnweta chọrọ: Usoro ahụ na-enye usoro ngbanwe 1 + 1 nchebe nhọrọ iji mezuo ihe achọrọ nke netwọkụ nkwukọrịta maka ntụkwasị obi netwọkụ, yana oge mgbanwe na-erughị 50m;
④ Mpaghara netwọk: Enwere ike ịhazi dayameta netwọk 10-20km iji mezuo ihe achọrọ nke netwọk ohere;
⑤ ikpo okwu ngwanrọ njikwa sistemụ jikọtara ọnụ: Maka ụzọ nnweta dị iche iche, o nwere usoro njikwa netwọkụ jikọtara ọnụ.
HUANET na-emepụta ọtụtụ ụdị xPON ONU, xPON ONT, gụnyere 1GE xPON ONU, 1GE+1FE+CATV+WIFI xPON ONT, 1GE+1FE+CATV+POTS+WIFI xPON ONU,1GE+3FE+POTS+WIFI xPON ONT.Anyị na-enyekwa Huawei xPON ONT.
Oge nzipu: Jun-24-2021