Reclaim RFoG Spectra for 100G EPON with PON DOCSIS Backhaul

Transcription

1 Reclaim RFoG Spectra for 100G EPON with PON DOCSIS Backhaul Eugene (Yuxin) DAI PhD Cox Communica,ons, IEEE Plenary MeeLng, Next GeneraLon EPON Study Group Nov. 8-12, 2015 Dallas, Taxes USA IEEE NG EPON Study Group 1

2 Outline Reclaim L band wavelength RFoG in a nutshell Replace RFoG with PON DOCSIS Backhaul Standardiza,on of PON DOCSIS Backhaul IEEE NG EPON Study Group 2

3 Why we need to reclaim RFoG spectra The 20nm lower L band op,cal resources are aqrac,ve for PON applica,ons ITU-T NG-PON2 downstream uses lower L band which conflicts with RFoG. As a result NG-PON2 can not coexist with RFoG The lower L band op,cal resources are also preferred for 100 Gb/s EPON downstream If an alterna,ve method can be found to backhaul RFoG signal, reclaiming the RFoG spectra is beneficial to operators who deploy NG- PON2 and/or 100G EPON IEEE NG EPON Study Group 3

4 10G EPON US 1270+/-10nm Current oplcal spectrum allocalons EPON and GPON US 1310+/-50nm EPON/GPON DS 1490+/-10nm NG-PON2 US RF video 10G EPON DS /+3 nm XGPON /+3 nm RFoG US 1590/1610nm nm 1360nm 1480nm nm 1524nm -1544nm 1550nm nm 1575nm nm 1590nm nm NG-PON2 DS 1596nm -1603nm The 20 nm spectra in L band is used by RFoG US and NG-PON2 DS The L band spectra are suitable for 100G EPON downstream NG-PON2 cannot coexist with RFoG because of resource conflicts Reclaiming RFoG US spectra with an alternalve method to backhaul RfoG signal will provide the resources needed for 100G EPON and solve the resource conflict with NG-PON2. 4

5 RFoG in a nutshell Broadcast Video, Switched DV VOD E QAM P2M Fiber Internet, IPTV CMTS DOCSIS QAM RFoG HEADEND RFoG OLT (CMTS) DS 1550 nm US 1610 nm R ONU R ONU RF Home Network RF CM STB CM STB Data Video Home Network Data Video Fiber ODN RFoG was developed at SCTE under IPS 910 and later became ANSI/SCTE 174 RFoG defines transmission of DOCSIS upstream via oplcal fiber RFoG delivers DOCSIS services over fiber ODN; could coexist with PON No changes in video Headend and CMTS Bandwidth is limited by DOCSIS protocol RFoG is considered as a transilonal solulon eventually leads to PON FTTH IEEE NG EPON Study Group 5

6 RFoG and PON RFoG could coexist with PON for a long Lme period Depends on the transi,on,me of MSO Headend to all IP It could be a very long,me period The L band RFoG spectra are suitable for 100G EPON downstream ITU-T NG-PON2 downstream wavelengths overlaps with RFoG US Releasing L band RFoG wavelength will be beneficial for both NG-PON2 and 100G EPON customers However, if reclaiming RFoG wavelength for 100G EPON, an alternalve method is needed to backhaul RFoG signal IEEE NG EPON Study Group 6

7 PON DOCSIS Backhaul Architecture HEADEND CMTS DS 1550 nm PON ONU with DB (DOCSIS Backhaul) ONU DS O/E PDB STB CM PON OLT ODN PON DOCSIS Backhaul (PDB) architecture applies to both EPON family and GPON family PDB provides the same funclon as RFoG PDB releases the 1610nm wavelength for 100G EPON downstream 7

8 Benefits of PON DOCSIS Backhaul PDB releases the 1610nm wavelength for 100G EPON PDB is compalble with NG-PON2 RFoG does not work with NG-PON2 PDB aligns becer with PON migralon than RFoG It provides a smooth migra,on from DOCSIS to PON PDB has the potenlal to have much lower cost than the RFoG + PON ONU solulon IEEE NG EPON Study Group 8

9 Feasibility of PON DOCSIS Backhaul The 25G & 100G EPON, NG-PON2, XGS-PON have enough upstream bandwidth to backhaul DOCSIS traffic The PDB method could be implemented to backhaul DOCSIS with RF carriers (40 MHz-80 MHz bandwidth) Similar to CPRI mobile front-haul The PDB method could be implemented to backhaul DOCSIS without RF carriers Similar to mobile backhaul The detailed discussion of PDB is out of scope of NG EPON SG. IEEE NG EPON Study Group 9

10 PON DOCSIS Backhaul StandardizaLon PDB method could be standardized at various organizalons IEEE 1904 SCTE IPS Cablelabs PDB could be standardized with different flavors PDB with 10G EPON, 25G EPON and 100G EPON PDB with XGS-PON and NG-PON2 IEEE NG EPON Study Group 10

11 100G EPON wavelength allocalon (example) 10G EPON US 1270+/-10nm EPON/GPON DS 1490+/-10nm NG-PON2 US RF video 10G EPON DS /+3 nm XGPON /+3 nm 100G EPON DS 100G EPON US nm 1360nm 1480nm nm 1524nm -1544nm 1550nm nm 1575nm nm 1590nm nm 100G EPON US: 1280 nm to 1360 nm with 20nm spacing 100G EPON DS: 1590nm to 1610 nm with 5 nm spacing 11

12 Conclusions PON DOCSIS Backhaul (PDB) architecture provides the same func,on as RFoG and it applies to both EPON family and GPON family PDB releases the lower L band resources for 100G EPON PDB is compa,ble with NG-PON2 and XGS-PON PDB aligns beqer with PON migra,on than RFoG PDB has the poten,al to have much lower cost than the RFoG + PON ONU solu,on PDB method could be standardized IEEE NG EPON Study Group 12

13 IEEE NG EPON Study Group 13