Recent progress in ITU-T PON standards

1 ITU-T PON standards - progress and Recent activitiesQ2/SG15 What is PON?TDMAC entral officeOLTO ptical splitterONU1 ONU2 ONU pointReference point Passive Optical Network (PON) system A point-to-multipoint optical communication system. The most popular system to realize Fiber To The Home (FTTH) in the world. Multiple ( 16 to 128) ONUs communicate with an OLT via optical splitter(s).OLT: Optical Line Terminal, ONU: Optical Network UnitTDMA: Time Division Multiple Access3 Application areas of PONFTTCurb/CabFTTHFTTB uildingFTTO fficeOptical splitterONUONUONUFTTCell(Mobile Backhaul/Fronthaul)Optical splitterONUONUOLTOLTQ2/15.

2 Optical Access Networks Q2/15 belongs to WP1 of SG15 Over the past, Q2 has worked on several generations of PON (pi-PON)Mostly of historical interest (A/B-PON)Perhaps 10M ONUs deployed (G-PON)Several 100M ONUs deployed (XG-PON) (XGS-PON) Both beginning to grow now (NG-PON2)Ecosystem building stage Additionally, several point to point systems were specified (Bidi100Mb/s Ethernet access) (aka 100 Base-BX) (Bidi1Gb/s Ethernet access) (aka 1000 Base-BX)45 Recent progress in PON Gbit/s (TDMA)#3#2 ONU# Gbit/s (TDM) 10-Gbit/s Symmetric PON system based on TDM and TDMATDM: Time DivisonMultiplexing,TDMA: Time Division Multiple (Primary)PtPWDM-PON(Optional) 10 Gbit/s (TDMA)l1l4 WDM(4 wavelengths) : Time and Wavelength Division MultiplexingP2P: Pointto PointWDM: Wavelength Division MultiplexingCT: Channel TerminationTDMA.

3 Time Division Multiple Access 40-Gbit/s capable PON system based on TWDM (Primary) and PtPWDM overlay (Optional)8 FTTH market breakdown9 JuneJanuary 2018 Oct 2018 Higher speed PON and RAN related higher speed PtP BiDioptical higher speed PON (agreed in 01-2018)Higher speed PON (>10 Gbps) whitepaper5G fronthaul in the context of PONOct 2016 New project Target projects project proposalsHigher speed PON & common TC layer standards1334 December110 New Higher Speed PON : Requirements for higher speed PONs Meant to be a collector of all PON requirements, working to find application sets that define reasonable : Specifications for a converged TC layer Meant to cover all HSP systems (single and multiple wavelengths, fixed and tunable optics), and maximum commonality with other : Specifications of fixed 50G : Specifications of the higher rate TWDM PMD Consider tunable ONU.

4 Higher speed BiDisingle fibrepoint to point optical access systems1011 Support 5G transport applications with PON4 potential use cases identified in ITU-T low latency servicesGeneral purpose cloud networkSmall cells in dense urban areasHybrid fronthaul linkF1 and FxInterfaces: Higher and lower layer interface in the future mobile fronthaulunder discussion in 3 GPP,CU:Central Unit, DU: Distributed Unit, RU: Radio case example of a dedicated wireless PONillustrated in ITU-T of ITU PON Technologies using WDMCE** (Co-Existence Element) G-PON OLTG-PON XGS-PON1577/1270 nm*XG-SPONOLTNG-PON2 OLTNG-PON21490/1310 nm*1600/1544 nm*1xN* downstream and upstream Center Wavelengths (nm)**Co-existence Element has been defined in ITU-T Amendment 1 along with additional Coexistence solutions FiberCEExample of a type of Coexistence Element defined in Appendix I of capabilities of 5G networks specified in ITU experienceddata rate(Mbit/s)100 SpectrumefficiencyIMT-20203 50011061020100 Mobility(km/h)

5 Latency(ms)Connection density(devices/km )2 Networkenergy efficiencyArea trafficcapacity(Mbit/s/m )2 Peak data rate(Gbit/s)101 4003501010510 1 Density(devices/km2)Peak Data Rate(Gbits/s)User Experienced Data Rate(Mbits/s)Spectrum EfficiencyMobility(km/h)Latency(ms)10610 0203x500110 Area Traffic Capacity(Mbit/s/m2)100xNetwork Energy EfficiencyParameter4 byPeak datarate150 Mbps-1 Gbps20 Gbps10 200xUser experienced data rate10 Mbps100 Mbps-1 Gbps10 100xMobility350km/h500 :1mseMBB:10ms10xConnection density1K-100K/km2106/km210 1000xTraffic improvement from LTE/Pre-5G to 5G Transport bandwidth grows 10-100x from 4G to 5 GSource: ITU-R , 9/2015168 options to split signal processing functions in fronthaul Option 1 Option 1 Option 2 Option 3 Option 4 Option 5 Option 6 Option 7 Option 8 Data rate scales with user traffic for split option 2 though 7 Meet 5G bandwidth and Latency Requirements Relationship between RAN protocol and fronthaul architecture17 What is PON?

6 TDMAC entral officeOLTO ptical splitterONU1 ONU2 ONU pointReference pointTimeONU ndataONU 1dataPONframesHeaderHeader Passive Optical Network (PON) system is a point-to-multipoint optical communication sytem. Multiple ( 16 to 128) ONUs comminicatewith an OLT via optical splitter(s). Popular PON systems use TDMA in upstream : Optical Line Terminal, ONU: Optical Network UnitTDMA: Time Division Multiple Access18 Recent progress in ITU-T PON standards