PON (Passive Optical Network) bụ netwọk ngwa anya na-agafe agafe, nke pụtara na ODN (netwọk nkesa ngwa anya) n'etitiOLT(Optical line terminal) naONU(Ngalaba netwọk ngwa anya) enweghị akụrụngwa na-arụ ọrụ ọ bụla, na-eji naanị eriri anya na ihe ndị na-agafe agafe. PON na-agbaso usoro netwọkụ isi-na-multipoint, nke bụ teknụzụ bụ isi iji ghọta FTTB/FTTH.
Teknụzụ PON nwere ọtụtụ ọdịnaya, na-emelite kwa mgbe niile. Mmepe nke teknụzụ xPON sitere na APON, BPON, na emesia GPON na EPON. Ndị a bụ teknụzụ nke ụdị nnyefe dị iche iche na ụkpụrụ nnyefe ewepụtara n'oge dị iche iche.
Kedu ihe bụ EPON?
EPON (Ethernet Passive Optical Network) bụ netwọọdụ ngwa anya na-agafe agafe. EPON dabere na teknụzụ PON nke Ethernet, nke jikọtara uru nke teknụzụ PON na teknụzụ Ethernet. Ọ na-anakwere ihe owuwu-na-multipoint yana nnyefe eriri anya na-agafe agafe iji nye ọtụtụ ọrụ n'elu Ethernet. N'ihi ntinye ego na nke ọma nke EPON, ọ bụ usoro nkwurịta okwu kachasị dị irè iji ghọta "netwọk atọ na otu" na "mile ikpeazụ".
Kedu ihe bụ GPON?
GPON (Gigabit-Capable Passive Optical Network) bụ Gigabit passive optical network ma ọ bụ Gigabit pasive optical network. Ụkpụrụ ndị EPON na GPON nakweere dị iche. Enwere ike ịsị na GPON dị elu ma nwee ike ịnyefe bandwidth karịa, ma nwee ike iweta ọtụtụ ndị ọrụ karịa EPON. Ọ bụ ezie na GPON nwere uru karịa EPON na ọnụ ahịa dị elu yana ọtụtụ ọrụ, nkà na ụzụ GPON dị mgbagwoju anya na ọnụ ahịa ya dị elu karịa EPON. Ya mere, ugbu a, EPON na GPON bụ teknụzụ nwere ọtụtụ ngwa ịnweta brọdband PON. Kedu teknụzụ ịhọrọ na-adabere karịa na ọnụahịa nke ịnweta eriri anya na ihe azụmahịa chọrọ. GPON ga-adabara ndị ahịa nwere nnukwu bandwidth, ọtụtụ ọrụ, QoS na nchekwa chọrọ na teknụzụ ATM dị ka ọkpụkpụ azụ. Ọdịnihu mmepe dị elu bandwit. Dịka ọmụmaatụ, teknụzụ EPON/GPON emepụtala 10 G EPON/10 G GPON, a ga-emeziwanye bandwit.
Ka ọchịchọ nke ndị na-eweta netwọk na-aga n'ihu na-abawanye, ọnụọgụ nke netwọk ohere ga-agbasawanye iji gboo mkpa a na-eto eto. Fiber-to-the-home (FTTH) passive optical network (PON) ohere netwọkụ anya bụ ugbu a teknụzụ kachasị eji na arụ ọrụ. Uru nke nkà na ụzụ PON bụ na ọ nwere ike ibelata ọrụ nke akụrụngwa eriri anya azụ azụ ma chekwaa ego; Ọdịdị netwọk ahụ na-agbanwe agbanwe na ikike mgbasawanye siri ike; ọnụ ọgụgụ ọdịda nke ngwa anya ngwa anya dị ala, ọ dịghịkwa mfe itinye aka na gburugburu ebe obibi; na ikike nkwado azụmahịa siri ike.