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ReclaimRFoGSpectrafor100GEPONwithPONDOCSISBackhaul
1
Eugene(Yuxin)DAIPhDCoxCommunica,ons,[email protected]
IEEE802.3PlenaryMeeLng,NextGeneraLonEPONStudyGroupNov.8-12,2015Dallas,TaxesUSAIEEE802.3NGEPONStudyGroup
Outline
• ReclaimLbandwavelength• RFoGinanutshell• ReplaceRFoGwithPONDOCSISBackhaul• Standardiza,onofPONDOCSISBackhaul
IEEE802.3NGEPONStudyGroup 2
WhyweneedtoreclaimRFoGspectra
• The20nmlowerLbandop,calresourcesareaQrac,veforPONapplica,ons
• ITU-TNG-PON2downstreamuseslowerLbandwhichconflictswithRFoG.AsaresultNG-PON2cannotcoexistwithRFoG
• ThelowerLbandop,calresourcesarealsopreferredfor100Gb/sEPONdownstream
• Ifanalterna,vemethodcanbefoundtobackhaulRFoGsignal,reclaimingtheRFoGspectraisbeneficialtooperatorswhodeployNG-PON2and/or100GEPON
IEEE802.3NGEPONStudyGroup 3
CurrentopLcalspectrumallocaLons
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• The20nmspectrainLbandisusedbyRFoGUSandNG-PON2DS• TheLbandspectraaresuitablefor100GEPONdownstream• NG-PON2cannotcoexistwithRFoGbecauseofresourceconflicts
ReclaimingRFoGUSspectrawithanalternaLvemethodtobackhaulRfoGsignalwillprovidetheresourcesneededfor100GEPONandsolvetheresourceconflictwithNG-PON2.
1596nm-1603nm
1260 1280nm 1360nm
10G EPON US 1270+/-10nm
EPON and GPON US 1310+/-50nm
1480nm - 1500nm
EPON/GPON DS 1490+/-10nm
1575nm - 1581nm
10G EPON DS 1577-2/+3 nm XGPON 1578 -2/+3 nm
1590nm - 1610nm
RFoG US 1590/1610nm
1550nm - 1560nm
RF video
NG-PON2US
1524nm-1544nm
NG-PON2DS
RFoGinanutshell
IEEE802.3NGEPONStudyGroup 5
FiberODN
EQAM
BroadcastVideo,SwitchedDV
VOD
RFoG
DOCSISQAM
CMTS
P2MFiber
Internet,IPTV
RFoGOLT(CMTS)
RONU
RONU
DS1550nmHEADEND
US1610nmRF DataCM
STBVideo
HomeNetwork
RF DataCMSTB
Video
HomeNetwork
• RFoGwasdevelopedatSCTEunderIPS910andlaterbecameANSI/SCTE174• RFoGdefinestransmissionofDOCSISupstreamviaopLcalfiber• RFoGdeliversDOCSISservicesoverfiberODN;couldcoexistwithPON
• NochangesinvideoHeadendandCMTS• BandwidthislimitedbyDOCSISprotocol
• RFoGisconsideredasatransiLonalsoluLoneventuallyleadstoPONFTTH
RFoGandPON
• RFoGcouldcoexistwithPONforalongLmeperiod– Dependsonthetransi,on,meofMSOHeadendtoallIP– Itcouldbeaverylong,meperiod
• TheLbandRFoGspectraaresuitablefor100GEPONdownstream
• ITU-TNG-PON2downstreamwavelengthsoverlapswithRFoGUS
• ReleasingLbandRFoGwavelengthwillbebeneficialforbothNG-PON2and100GEPONcustomers
• However,ifreclaimingRFoGwavelengthfor100GEPON,analternaLvemethodisneededtobackhaulRFoGsignal
IEEE802.3NGEPONStudyGroup 6
PONDOCSISBackhaulArchitecture
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• PONDOCSISBackhaul(PDB)architectureappliestobothEPONfamilyandGPONfamily
• PDBprovidesthesamefuncLonasRFoG• PDBreleasesthe1610nmwavelengthfor100GEPONdownstream
CMTSDS 1550 nm
PONOLT ODN
ONU
DSO/EPDB
CM
STB
PONONUwithDB(DOCSISBackhaul)
HEADEND
BenefitsofPONDOCSISBackhaul
IEEE802.3NGEPONStudyGroup 8
• PDBreleasesthe1610nmwavelengthfor100GEPON
• PDBiscompaLblewithNG-PON2• RFoGdoesnotworkwithNG-PON2
• PDBalignsbecerwithPONmigraLonthanRFoG• Itprovidesasmoothmigra,onfromDOCSIStoPON
• PDBhasthepotenLaltohavemuchlowercostthantheRFoG+PONONUsoluLon
FeasibilityofPONDOCSISBackhaul
IEEE802.3NGEPONStudyGroup 9
• The25G&100GEPON,NG-PON2,XGS-PONhaveenoughupstreambandwidthtobackhaulDOCSIStraffic
• ThePDBmethodcouldbeimplementedtobackhaulDOCSISwithRFcarriers(40MHz-80MHzbandwidth)• SimilartoCPRImobilefront-haul
• ThePDBmethodcouldbeimplementedtobackhaulDOCSISwithoutRFcarriers• Similartomobilebackhaul
• ThedetaileddiscussionofPDBisoutofscopeofNGEPONSG.
PONDOCSISBackhaulStandardizaLon
IEEE802.3NGEPONStudyGroup 10
• PDBmethodcouldbestandardizedatvariousorganizaLons• IEEE1904• SCTEIPS• Cablelabs
• PDBcouldbestandardizedwithdifferentflavors• PDBwith10GEPON,25GEPONand100GEPON• PDBwithXGS-PONandNG-PON2
100GEPONwavelengthallocaLon(example)
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• 100GEPONUS:1280nmto1360nmwith20nmspacing• 100GEPONDS:1590nmto1610nmwith5nmspacing
1260 1280nm 1360nm
10G EPON US 1270+/-10nm
1480nm - 1500nm
EPON/GPON DS 1490+/-10nm
1575nm - 1581nm
10G EPON DS 1577-2/+3 nm XGPON 1578 -2/+3 nm
1590nm - 1610nm
1550nm - 1560nm
RF video
NG-PON2US
1524nm-1544nm
100GEPONUS
100GEPONDS
Conclusions
• PONDOCSISBackhaul(PDB)architectureprovidesthesamefunc,onasRFoGanditappliestobothEPONfamilyandGPONfamily
• PDBreleasesthelowerLbandresourcesfor100GEPON
• PDBiscompa,blewithNG-PON2andXGS-PON• PDBalignsbeQerwithPONmigra,onthanRFoG• PDBhasthepoten,altohavemuchlowercostthantheRFoG+PONONUsolu,on
• PDBmethodcouldbestandardized IEEE802.3NGEPONStudyGroup 12
