Itekhnoloji yePON kunye nemigaqo yonxibelelwano

Isishwankathelo sobuchwephesha bePON kunye nemigaqo yothungelwano: Eli nqaku kuqala lazisa ingcamango, umgaqo wokusebenza kunye neempawu zeteknoloji yePON, emva koko lixubusha ngokweenkcukacha ukuhlelwa kobuchwepheshe bePON kunye neempawu zayo zokusebenza kwiFTTX. Ingqwalasela yenqaku kukucacisa imigaqo yothungelwano ekufuneka ilandelwe kwisicwangciso sothungelwano lwe-PON yeteknoloji ukukhokela ukwakhiwa kwenethiwekhi kunye nomsebenzi wokuphucula.
Amagama angundoqo: PON; OLT;I-ONU; I-ODN; I-EPON; GPON

1. Isishwankathelo se-PON yeteknoloji ye-PON (i-Passive Optical Network, i-Passive Optical Network) iteknoloji ye-intanethi esebenzisa i-fiber optical njengendlela yokudlulisa kunye nokuqonda ukuhanjiswa kwedatha ngokusebenzisa izixhobo ze-passive optical. Itekhnoloji ye-PON ineenzuzo zomgama omde wothumelo, i-bandwidth ephezulu, amandla anamandla okuchasana nokuphazamiseka, kunye neendleko eziphantsi zokugcinwa, ngoko ke isetyenziswe ngokubanzi kwinkalo yokufikelela kumanethiwekhi. Uthungelwano lwePON luqulunqwe ikakhulu ngamacandelo amathathu:OLT(Optical Line Terminal, optical line terminal), ONU (Optical Network Unit, optical network unit) kunye ne-ODN (Optical Distribution Network, inethiwekhi yokusabalalisa optical).

2. Ukuhlelwa kweteknoloji yePON kunye neempawu zesicelo kwi-FTTX iteknoloji yePON ihlulwe kakhulu ibe ziindidi ezimbini: i-EPON (i-Ethernet PON, i-Ethernet Passive Optical Network) kunyeGPON(I-Gigabit-Capable PON, i-Gigabit Passive Optical Network). I-EPON isekelwe kwiprotocol ye-Ethernet, inokuhambelana okuphezulu kunye nokuguquguquka, kwaye ifanelekile kwiimeko ezahlukeneyo zoshishino. I-GPON inesantya esiphezulu sothumelo kunye namandla okuxhasa inkonzo etyebileyo, kwaye ifanelekile kwiimeko ezinobubanzi obuphezulu kunye neemfuno zeQoS. Kwi-FTTX (iFiber ukuya kwi-X) izicelo, iteknoloji ye-PON idlala indima ebalulekileyo. I-FTTX ibhekisa kuyilo lwenethiwekhi ebeka i-fiber ebonakalayo kufutshane nezakhiwo zomsebenzisi okanye izixhobo zomsebenzisi. Ngokwezigaba ezahlukeneyo zokubeka i-fiber optical, i-FTTX inokohlulwa ibe ziindlela ezahlukeneyo ezifana ne-FTTB (iFayibha ukuya kwiSakhiwo) kunye ne-FTTH (iFayibha ukuya kwiKhaya). Njengenye yeendlela ezibalulekileyo zokuphunyezwa kweFTTX, iteknoloji yePON ibonelela abasebenzisi ngesantya esiphezulu kunye noqhagamshelwano oluzinzileyo lwenethiwekhi.

3. Imigaqo yothungelwano lobuchwephesha bePON Kucwangciso lothungelwano lobuchwephesha bePON, le migaqo yothungelwano ilandelayo kufuneka ilandelwe:
Uyilo lwenethiwekhi lulula kwaye luyasebenza:amanqanaba othungelwano kunye nenani lee-node kufuneka zincitshiswe kangangoko kunokwenzeka ukunciphisa ubunzima benethiwekhi kunye neendleko zokugcina. Ngexesha elifanayo, kuyimfuneko ukuqinisekisa ukuba inethiwekhi inokuthembeka okuphezulu kunye nokuzinza ukuhlangabezana neemfuno zoshishino lomsebenzisi.
Amandla okuthwala ishishini:Uthungelwano lwe-PON kufuneka lube ne-bandwidth ephezulu kunye ne-QoS yokuqinisekisa amandla ukuhlangabezana neemfuno zeshishini ezikhulayo zabasebenzisi. Ngexesha elifanayo, kuyimfuneko ukuxhasa iindidi ezininzi zamashishini kunye nokufikelela kwisixhobo se-terminal ukufezekisa ukudityaniswa kweshishini kunye nolawulo olumanyeneyo.
Ukhuseleko oluphezulu:Uthungelwano lwe-PON kufuneka luthathe amanyathelo ahlukeneyo okhuseleko ukuqinisekisa ubumfihlo, ukunyaniseka kunye nokufumaneka kokuhanjiswa kwedatha. Umzekelo, iindlela zokhuseleko ezifana nothumelo oluntsonkothileyo kunye nolawulo lofikelelo zingasetyenziselwa ukuthintela uhlaselo lwenethiwekhi kunye nokuvuza kwedatha.
Ukukala okuqinileyo:Uthungelwano lwe-PON kufuneka lube ne-scalability elungileyo kwaye lukwazi ukuziqhelanisa notshintsho kwiimfuno zeshishini elizayo kunye nophuhliso lwetekhnoloji. Ngokomzekelo, isikali sothungelwano kunye nokugubungela kunokwandiswa ngokuphucula izixhobo ze-OLT kunye ne-ONU okanye ukongeza ii-ODN nodes.
Ukuhambelana kakuhle:Iinethiwekhi ze-PON kufuneka zixhase imigangatho emininzi kunye neeprothokholi kwaye zikwazi ukudibanisa ngokungenamthungo kunye nokusebenzisana nothungelwano olukhoyo kunye nezixhobo. Oku kunceda ukunciphisa iindleko zokwakha kunye nokugcinwa kwenethiwekhi kunye nokuphucula ukusetyenziswa kwenethiwekhi kunye nokuthembeka.

I-4.I-teknoloji ye-PON yokuqukumbela, njengeteknoloji yokufikelela kwi-fiber optical esebenzayo kwaye ethembekileyo, inamathuba okusebenza ngokubanzi kwintsimi yokufikelela kuthungelwano. Ngokulandela imigaqo yothungelwano yokucwangciswa kwenethiwekhi kunye nokuphucula, ukusebenza kunye nokuzinza kwenethiwekhi yePON kunokuphuculwa ngakumbi ukuhlangabezana neemfuno zoshishino ezikhulayo zabasebenzisi. Kwangaxeshanye, kunye nokuqhubela phambili kwetekhnoloji kunye nokwandiswa okuqhubekayo kweemeko zesicelo, iteknoloji yePON iya kudlala indima ebaluleke ngakumbi kwixesha elizayo.