PON Network Passive Optical Network) bivuze ko nta bikoresho bifatika kandi ukoresha gusa Optical Fibre na Passive Component hagati ya OLT (Optical Line Terminal) na ONU (Optical Network Unit). Kandi PON mubuhanga bukuru bwo gushyira mubikorwa FTTB / FTTH, ifata cyane cyane ingingo kumurongo wimiterere myinshi.
Hano haribintu byinshi muri tekinoroji ya PON, kandi tekinoroji ya PON ihora isubiramo kandi igezweho. Ikoranabuhanga rya XPON ryateye imbere kuva APON, BPON, hanyuma nyuma ya EPON na GPON. Hariho uburyo butandukanye bwo kohereza hamwe nuburyo bwo kohereza bwateye imbere mubihe bitandukanye.
APON ni iki?
Mu mpera z'imyaka ya za 90, ITU (International Telecommunication Union) Yabanje gusaba APON ikoresheje uburyo bwo kwimura Asinchronous Transfer Mode (ATM) mu gutekera itumanaho. APON ikoresha uburyo bwo guhuza no guhuza imibare ya ATM, ikomatanya hamwe nigikorwa cyo kugabana pasiporo igabanya fibre optique na Optical Line Terminal, bigatuma igiciro kiri munsi ya 20% ~ 40% ugereranije na sisitemu gakondo ya PDH / SDH ishingiye kumuzunguruko. guhinduranya.
BPON ni iki
Hamwe niterambere ryihuse rya tekinoroji ya Ethernet, APON ntagikoreshwa. Muri iki gihe, igitekerezo cya Broadband Passive Optical Network (BPON) cyatanzwe. BPON niyongera ryibipimo bya APON, mbere izwi nka APON, ariko nyuma ihinduka kuri BPON kubintu bitandukanye. BPON ishingiye kuri protocole ya ATM, hamwe nu muvuduko wo hejuru no kumanuka wa 155Mbpas na 622Mbps. Mugihe kimwe, Yongera imbaraga zingirakamaro zo kugabura, kurinda nibindi bikorwa, kandi irashobora gutanga Ethernet kwinjira, kohereza amashusho, Imirongo ikodeshwa byihuse hamwe nizindi serivisi.
EPON ni iki?
Bitewe nigiciro kinini cyo kohereza BPON, cyaje gusimburwa nigiciro cyinshi kandi cyihuse cya EPON.EPON (Ethernet Passive Optical Network) numuyoboro wa Ethernet Passive Optical Network.Ikoranabuhanga rya PON PON rishingiye kuri Ethernet rihuza ibyiza byikoranabuhanga rya PON kandi Ikoranabuhanga rya Ethernet, ryemera ingingo kuri Multi-point imiterere, pasiporo optique ya fibre yoherejwe,
Bitewe nigiciro kinini cyo kohereza BPON, cyaje gusimburwa nigiciro cyinshi kandi cyihuse cya EPON.EPON (Ethernet Passive Optical Network) numuyoboro wa Ethernet Passive Optical Network.Ikoranabuhanga rya PON PON rishingiye kuri Ethernet rihuza ibyiza byikoranabuhanga rya PON kandi Ikoranabuhanga rya Ethernet, ryemera Point to- Multi-point structure, pasiporo optique ya fibre optique, kandi itanga serivisi zitandukanye kuri Ethernet.Kuko EPON ifite ubukungu kandi ikora neza kuyikoresha, nuburyo bwiza cyane bwo kugera kuri "imiyoboro itatu murimwe" kandi Itumanaho rya "kilometero yanyuma".
GPON ni iki?
GPON. ibyiza mumuvuduko mwinshi na serivisi nyinshi ugereranije na EPON, tekinoroji ya GPON iraruhije kandi igiciro cyayo kirenze icya EPON. Kubwibyo, kuri ubu, EPON na GPON nubuhanga bukoreshwa cyane mugukoresha umurongo mugari wa PON, no guhitamo. tekinoroji iterwa cyane nigiciro cya optique ya fibre optique nibisabwa mubucuruzi.GPON izarushaho kuba nziza kubakiriya bafite umurongo mwinshi, serivisi nyinshi, QoS nibisabwa byumutekano, hamwe na tekinoroji ya ATM nkumugongo. Iterambere ryigihe kizaza ni ryinshi, urugero , Ikoranabuhanga rya EPON / GPON ritezimbere 10 G EPON / 10 G GPON, umurongo wa interineti uzarushaho kunozwa.
Kumenya byinshi kuri APON, BPON, EPON, GPON
Nkuko ubushobozi busaba abatanga imiyoboro ikomeje kwiyongera, uburyo bwinshi bwo guhuza imiyoboro bugomba no kwaguka kugirango ibyo bisabwa bigenda byiyongera. Ibyiza bya tekinoroji ya PON nuko ishobora kugabanya imikoreshereze yumutungo wa fibre wumugongo no kuzigama ishoramari. Imiterere yumuyoboro woroshye, ubushobozi bukomeye bwo kwaguka; ibikoresho bya pasitiki optique bifite igipimo gito cyo kunanirwa kandi ntibyoroshye kubangamirwa nibidukikije byo hanze. Inkunga ikomeye mubucuruzi ubushobozi, n'ibindi