Ensimini yanamuhla yeNethiwekhi yokuxhumana, ubuchwepheshe be-PassiveOptical Network (PON) buye kancane kancane bathatha indawo ebalulekile kunethiwekhi yokuxhumana evamile ngezinzuzo zayo zesivinini esikhulu, ibanga elide kanye nokungabi nomsindo. Phakathi kwazo, ubuchwepheshe be-GPON, i-XG-PON kanye ne-XGS-PON obubaluleke kakhulu. Bunezici zabo futhi busetshenziswa kabanzi ezimweni ezahlukene. Lesi sihloko sihlola umehluko obalulekile phakathi kwalezi zindlela ezintathu zobuchwepheshe ngokuningiliziwe ukusiza abafundi baqonde kangcono izici zabo kanye nezimo zohlelo lokusebenza.
I-GPON, igama eligcwele elithi Gigabit-CapablePassive OpticalNetwork, ubuchwepheshe benethiwekhi ye-optical engasebenzisi i-passive opposition obuhlongozwe okokuqala yinhlangano ye-FSAN ngo-2002. Ngemva kweminyaka eminingana yokuthuthukiswa, i-ITU-T yabulinganisa ngokusemthethweni ngo-2003. Ubuchwepheshe be-GPON buhloselwe kakhulu imakethe yenethiwekhi yokufinyelela, enganikeza idatha esheshayo nenamandla amakhulu, izinsizakalo zezwi nevidiyo zemindeni namabhizinisi.
Izici zobuchwepheshe be-GPON zimi kanje:
1. Isivinini: izinga lokudlulisa elingezansi lingu-2.488Gbps, izinga lokudlulisa elingenhla lingu-1.244Gbps.
2. Isilinganiso se-shunt: 1:16/32/64.
3. Ibanga lokudlulisa: ibanga eliphezulu lokudlulisa lingu-20km.
4. Ifomethi ye-encapsulation: Sebenzisa ifomethi ye-encapsulation ye-GEM (GEM Encapsulation Method).
5. Indlela yokuvikela: Sebenzisa indlela yokushintsha ukuvikela okungasebenzisi i-1+1 noma i-1:1.
I-XG-PON, igama eligcwele le-10Gigabit-CapablePassive OpticalNetwork, iyisizukulwane esilandelayo sobuchwepheshe be-GPON, esaziwa nangokuthi inethiwekhi ye-optical yesizukulwane esilandelayo (NG-PON). Uma iqhathaniswa ne-GPON, i-XG-PON inokuthuthuka okukhulu ngesivinini, isilinganiso se-shunt kanye nebanga lokudlulisa.
Izici zobuchwepheshe be-XG-PON zimi kanje:
1. Isivinini: Izinga lokudlulisa i-Downlink lingu-10.3125Gbps, izinga lokudlulisa i-uplink lingu-2.5Gbps (i-uplink ingabuye ithuthukiswe ibe yi-10 GBPS).
2. Isilinganiso se-shunt: 1:32/64/128.
3. Ibanga lokudlulisa: ibanga eliphezulu lokudlulisa lingu-20km.
4. Ifomethi yephakheji: Sebenzisa ifomethi yephakheji ye-GEM/10GEM.
5. Indlela yokuvikela: Sebenzisa indlela yokushintsha ukuvikela okungasebenzisi i-1+1 noma i-1:1.
I-XGS-PON, eyaziwa ngokuthi i-10GigabitSymmetric Passive OpticalNetwork, iyinguqulo ehambisanayo ye-XG-PON, eyenzelwe ukuhlinzeka ngezinsizakalo zokufinyelela i-broadband ngamanani ahambisanayo aphezulu naphansi. Uma kuqhathaniswa ne-XG-PON, i-XGS-PON inokwenyuka okukhulu kwesivinini se-uplink.
Izici zobuchwepheshe be-XGS-PON zimi kanje:
1. Isivinini: Izinga lokudlulisa elingezansi lingu-10.3125Gbps, izinga lokudlulisa elingenhla lingu-10 GBPS.
2. Isilinganiso se-shunt: 1:32/64/128.
3. Ibanga lokudlulisa: ibanga eliphezulu lokudlulisa lingu-20km.
4. Ifomethi yephakheji: Sebenzisa ifomethi yephakheji ye-GEM/10GEM.
5. Indlela yokuvikela: Sebenzisa indlela yokushintsha ukuvikela okungasebenzisi i-1+1 noma i-1:1.
Isiphetho: I-GPON, i-XG-PON kanye ne-XGS-PON ubuchwepheshe obuthathu obubalulekile benethiwekhi ye-optical engasebenzi. Bunomehluko osobala ngesivinini, isilinganiso se-shunt, ibanga lokudlulisa, njll., ukuze kuhlangatshezwane nezidingo zezimo ezahlukene zohlelo lokusebenza.
Ngokuqondile: I-GPON yenzelwe kakhulu imakethe yenethiwekhi yokufinyelela, ihlinzeka ngedatha yesivinini esikhulu, enamandla amakhulu, izwi nevidiyo kanye nezinye izinsizakalo; i-XG-PON inguqulo ethuthukisiwe ye-GPON, enesivinini esiphezulu kanye nesilinganiso se-shunt esiguquguqukayo. I-XGS-PON igcizelela ukulingana kwamazinga aphezulu naphansi futhi ifanele izinhlelo zokusebenza zenethiwekhi yontanga. Ukuqonda umehluko obalulekile phakathi kwalezi zindlela ezintathu zobuchwepheshe kusisiza sikhethe ikhambi lenethiwekhi yokukhanya elifanele ezimweni ezahlukene.
Isikhathi sokuthunyelwe: Ephreli-24-2024