Mazuva ano, indasitiri yekukurukurirana yeChina iri kukura nekukurumidza, uye mafiber optic modules anoramba achikwenenzverwa uye kukwidziridzwa. Kubuda kwePON yakakwira-performance optical modules zvishoma nezvishoma yakatsiva tsika yakaderera-inoshanda optical fibers uye inoshandiswa zvakanyanya. PON yakakamurwa kuita GPON uye EPON. GPON inogona kushandiswa. Yakanzi ishanduro yakakwidziridzwa yeEPON.
Sei uchida kukumbira GPON?
GPON ine yakakwira Gigabit chiyero, 92% bandwidth kushandiswa uye kugona kutsigira akawanda-sevhisi transparent kutapurirana, nepo ichiva nechokwadi chemhando yebasa uye nhanho, ichipa carrier-class network monitoring uye masevhisi manejimendi.
Kuenzaniswa nekushandiswa kwebandwidth, mutengo, rutsigiro rwesevhisi yakawanda, uye mabasa eOAM, GPON iri nani pane EPON:
1.Bandwidth Utilization: Kune rumwe rutivi, EPON inoshandisa 8B / 10B encoding, iyo pachayo inotanga kurasikirwa kwe20%. Mwero wekutapurirana we1.25 Gbit/s unongova 1 Gbit/s pamberi peprotocol yekugadzirisa.
2.Cost: Panyaya ye-single-bit cost, mutengo weGPON wakaderera pane weEPON.
3.Multi-service support: EPON transmission yetsika TDM masevhisi inotarisana neQoS matambudziko.Iyo yakasiyana pasuru fomu yeGPON inoita kuti itsigire maATM masevhisi uye IP masevhisi, kuti iwane yechokwadi yakazara sevhisi.
4.OAM basa: EPON inongogadzirisa mabasa ekutanga akadai sechiratidzo chekutadza kure, kureba loopback control, uye kutarisa kwekubatanidza, asi mamwe mabasa eOAM epamusoro anowedzerwa akazvimirira nemugadziri mumudziyo.GPON OAM mabasa anosanganisira bandwidth grant allocation, dynamic bandwidth allocation. (DBA), yekubatanidza kutarisa, kudziviriraswitching, kuchinjanisa kiyi, uye akasiyana aramu mabasa. Kubva pachiyero chemaonero, ruzivo rweGPON OAM rwakawanda kupfuura EPON.
Ndedzipi nzira mbiri dzekufambisa dzeGPON:
Imwe iATM mode uye imwe ndiyo GPON package (GEM) mode.Muchigadziro chekutumira, GPON inogona kushandisa ATM mode kana GEM mode, kana zvose zviri zviviri zvinogona kushandiswa pamwe chete. Ndeipi nzira yekushandisa, sarudza kana GPON yatangwa.Optical fiber ine zvakanakira kurasikirwa kwakaderera uye kuchengetedza zviwanikwa. Tichitarisa akawanda mabroadband application mune ramangwana, nyika zhinji dzinoshandisa optical fiber senzira yekufambisa.