I-Fiber to the Home (FTTH) iwuhlelo olufaka i-fiber optics ukusuka endaweni emaphakathi ngokuqondile nezakhiwo ezingazodwana njengezindlu namafulethi. Ukuthunyelwa kwe-FTTH sekuhambe ibanga elide ngaphambi kokuthi abasebenzisi basebenzise i-fiber optics esikhundleni sekhopha ukuze bathole i-inthanethi ye-broadband.
Kunezindlela ezimbili eziyisisekelo zokusebenzisa inethiwekhi ye-FTTH enesivinini esikhulu:amanethiwekhi okukhanya asebenzayo(AON) kanye ne-passiveamanethiwekhi optical(I-PON).
Ngakho-ke i-AON ne-PON amanethiwekhi: yini umehluko?
Iyini inethiwekhi ye-AON?
I-AON iyi-point-to-point network architecture lapho obhalisile ngamunye enomugqa wakhe we-fiber optic onqanyulwa ku-concentrator optical. inethiwekhi ye-AON ihlanganisa amadivayisi okushintsha anamandla kagesi afana namarutha noma izihlanganisi ezishintshayo ukuze zilawule ukusatshalaliswa kwesignali nokusayina kokuqondisa kumakhasimende athile.
Ukushintsha kuvuliwe futhi kuvaliwe ngezindlela ezihlukahlukene zokuqondisa amasignali angenayo naphumayo ezindaweni ezifanele.Ukuthembela kwenethiwekhi ye-AON kubuchwepheshe be-Ethernet kwenza ukusebenzisana phakathi kwabahlinzeki kube lula. Ababhalisile bangakhetha izingxenyekazi zekhompuyutha ezihlinzeka ngezilinganiso zedatha ezifanele futhi zikhuphule njengoba izidingo zabo zikhula ngaphandle kokumisa kabusha inethiwekhi. Nokho, amanethiwekhi e-AON adinga okungenani isihlanganisi seswishi esisodwa ngobhalisile ngamunye.
Iyini inethiwekhi ye-PON?
Ngokungafani namanethiwekhi e-AON, i-PON iyisakhiwo senethiwekhi ye-point-to-multipoint esebenzisa izihlukanisi ezingenzi lutho ukuze zihlukanise futhi ziqoqe amasignali abonakalayo. Izihlukanisi zefiber zivumela inethiwekhi ye-PON ukuthi inikeze ababhalisile abaningi ngefayibha eyodwa ngaphandle kwesidingo sokuphakela imicu ehlukene phakathi kwehabhu nomsebenzisi wokugcina.
Njengoba igama liphakamisa, amanethiwekhi e-PON awabandakanyi okokusebenza okushintshwayo okunenjini futhi abelane ngezinqwaba zefiber izingxenye zenethiwekhi. Izinto ezisebenzayo zidingeka kuphela emthonjeni naseziphethweni zokwamukela zesignali.
Kunethiwekhi evamile ye-PON, isihlukanisi se-PLC siyisisekelo. Ompompi be-Fiber optic bahlanganisa amasignali amaningi okukhanya abe okukhiphayo okukodwa, noma ompompi be-fiber optic bathatha okokufaka okukodwa kokubona futhi basabalalise kokuphumayo ngakunye okuningi. Lokhu kuthinta kwe-PON kuqondiswa kabili. Ukuze kucace, amasignali e-fiber optic angathunyelwa ezansi nomfula ukusuka ehhovisi elimaphakathi ukuze asakaze kubo bonke ababhalisile. Amasignali avela kwababhalisile angathunyelwa phezulu nomfula futhi ahlanganiswe abe umcu owodwa ukuze axhumane nehhovisi elimaphakathi.
I-AON vs PON Networks: Umehluko Nezinketho
Womabili amanethiwekhi e-PON kanye ne-AON akha umgogodla we-fiber optic wesistimu ye-FTTH, evumela abantu namabhizinisi ukuthi bafinyelele ku-inthanethi. Ngaphambi kokukhetha i-PON noma i-AON, kubalulekile ukuqonda umehluko phakathi kwabo.
Ukusabalalisa Kwesiginali
Uma kukhulunywa ngamanethiwekhi e-AON nawe-PON, umehluko omkhulu phakathi kwawo yindlela isignali yokubona esakazwa ngayo kukhasimende ngalinye kusistimu ye-FTTH. Kuhlelo lwe-AON, ababhalisile banezinqwaba ezinikelwe ze-fiber, ezibavumela ukuthi bafinyelele kumkhawulokudonsa ofanayo, kunokuba kube okwabiwe. Kunethiwekhi ye-PON, ababhalisile babelana ngengxenye yenqwaba ye-fiber yenethiwekhi ku-PON. Ngenxa yalokho, abantu abasebenzisa i-PON bangathola nokuthi isistimu yabo ihamba kancane ngoba bonke abasebenzisi babelana ngomkhawulokudonsa ofanayo. Uma inkinga yenzeka ngaphakathi kwesistimu ye-PON, kungaba nzima ukuthola umthombo wenkinga.
Izindleko
Izindleko ezinkulu eziqhubekayo kunethiwekhi yizindleko zokunika amandla okokusebenza nokulungiswa. I-PON isebenzisa amadivayisi angenzi lutho adinga ukulungiswa okuncane futhi akukho mandla anikezwayo kunenethiwekhi ye-AON, okuyinethiwekhi esebenzayo. Ngakho-ke i-PON ishibhile kune-AON.
Ibanga Lokukhava kanye Nezicelo
I-AON ingamboza ibanga elingafika kumakhilomitha angama-90, kanti i-PON ivamise ukukhawulelwa olayini bekhebula le-fiber optic abafika kumakhilomitha angama-20 ubude. Lokhu kusho ukuthi abasebenzisi be-PON kufanele basondele ngokwendawo kusiginali yokuqala.
Ngaphezu kwalokho, uma ihlotshaniswa nohlelo lokusebenza noma isevisi ethile, inani lezinye izici lidinga ukucatshangelwa. Isibonelo, uma i-RF nezinsizakalo zevidiyo zizosetshenziswa, kusho ukuthi i-PON ivamise ukuba ukuphela kwesixazululo esisebenzayo. Kodwa-ke, uma zonke izinsiza zisuselwe ku-Internet Protocol, khona-ke i-PON noma i-AON ingase ifaneleke. Uma amabanga amade ehilelekile futhi ukunikeza amandla nokupholisa ezingxenyeni ezisebenzayo ensimini kungaba yinkinga, khona-ke i-PON ingaba inketho engcono kakhulu. Noma, uma ikhasimende eliqondiwe kuyizentengiso noma iphrojekthi ihlanganisa izindawo zokuhlala eziningi, khona-ke inethiwekhi ye-AON ingase ifaneleke kakhulu.
I-AON vs. PON Networks: Iyiphi i-FTTH oyikhethayo?
Uma ukhetha phakathi kwe-PON noma i-AON, kubalulekile ukucabangela ukuthi yiziphi izinsizakalo ezizolethwa ngenethiwekhi, i-topology yenethiwekhi iyonke, nokuthi angobani amakhasimende ayinhloko. Ama-opharetha amaningi akhiphe inhlanganisela yawo womabili amanethiwekhi ezimeni ezahlukene. Kodwa-ke, njengoba isidingo sokusebenzisana kwenethiwekhi nokulinganisa siqhubeka sikhula, izakhiwo zenethiwekhi zivame ukuvumela noma iyiphi i-fiber ukuthi isetshenziswe ngokushintshana ezinhlelweni ze-PON noma ze-AON ukuze kuhlangatshezwane nezidingo zezidingo zesikhathi esizayo.
Isikhathi sokuthumela: Oct-24-2024