Site na mmụba na-aga n'ihu nke iwu netwọkụ dị elu yana mkpa iwulite ndụ smart dijitalụ dabere na ike netwọkụ “gigabit atọ”, ndị ọrụ chọrọ ogologo nnyefe ogologo, bandwidth dị elu, ntụkwasị obi siri ike na mmefu azụmaahịa dị ala (OPEX), na GPON na-akwado ọtụtụ ọrụ iji gboo mkpa ndị ahịa.
Kedu ihe bụ GPON?
GPON bụ mbiri nke Gigabit Passive Optical Network, nke usoro ntụnye ITU-T kọwapụtara G.984.1 ruo G.984.6. GPON nwere ike ibunye ọ bụghị naanị Ethernet, kamakwa ATM na TDM (PSTN, ISDN, E1 na E3). Isi ihe ya bụ iji ndị na-ekesa ihe na-agafe agafe na netwọk nkesa eriri anya, na-eji usoro ntinye aka-na-multipoint, iji otu eriri anya na-abata site na etiti ebe onye na-eweta netwọk na-ejere ọtụtụ ezinụlọ na ndị ọrụ obere azụmahịa ozi.
GPON, EPON na BPON
EPON (Ethernet Passive Optical Network) na GPON nwere nkọwa yiri nke ahụ. Ha abụọ bụ netwọk PON ma ha abụọ na-eji eriri anya na otu ugboro ngwa anya. Ọnụego netwọk abụọ a na ụzọ elu bụ ihe dịka 1.25 Gbits / s. Na BPON (Broadband Passive Optical Network) na GPON yikwara otu ihe. Ha abụọ na-eji eriri anya ma nwee ike ịnye ọrụ maka ndị ọrụ 16 ruo 32. Nkọwa BPON na-esote ITU-T G983.1, na GPON na-esote ITU-T G984.1. Mgbe malitere iwebata ngwa PON, BPON kacha ewu ewu.
GPON na-ewu ewu nke ukwuu n'ahịa eriri anya. Na mgbakwunye na teknụzụ ya dị elu, ọ nwekwara uru ndị a:
1.Range: Single-mode fiber nwere ike ibunye data site na 10 ruo 20 kilomita, ebe eriri ọla kọpa na-emekarị na-ejedebe na nso nke 100 mita.
2.Speed: Ọnụego mbufe ala nke EPON bụ otu ihe ahụ dị na elu ya, nke bụ 1.25 Gbit / s, ebe ọnụego mbufe ala nke GPON bụ 2.48 Gbit / s.
3.Security: N'ihi ikewapụ akara ngosi na eriri anya, GPON bụ n'ezie usoro nchekwa. N'ihi na a na-ebunye ha na sekit mechiri emechi ma nwee ezoro ezo, enweghị ike ịzọta ma ọ bụ pịa GPON.
4.Affordability: GPON fiber optic cables dị ọnụ ala karịa ọla kọpa LAN cables, ma nwee ike izere itinye ego na wiring na ngwá electronic ndị metụtara ya, si otú ahụ na-azọpụta ego.
5.Energy nchekwa: N'adịghị ka waya ọla kọpa ọkọlọtọ n'ọtụtụ netwọk, arụ ọrụ ike nke GPON na-abawanye site na 95%. Na mgbakwunye na arụmọrụ, gigabit pasive optical networks na-enyekwa ngwọta dị ọnụ ala nke nwere ike ịbawanye ndị ọrụ site na nkewa, nke na-ewu ewu na mpaghara ndị mmadụ juru.