Download - XG PON YanquiLuo Huawei
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Next Generation G-PON
Yuanqiu Luo, Huawei
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2FSAN NG-PON technology roadmap
~2010 ~2015
G-PON
1GE-PON
WDM option to enable to overlay/multiple
XG-PONs
Coexistence enables gradual migration in the same ODN.
NG-PON2E.g. Higher-rate TDM,
DWDM, CDM, OFDM, etc.
NG-PON1 incl. long-reach option
Cap
acity
XG-PON(Up: 2.5G or 10G,
Down: 10G)
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NG-PONNG-PON
XG-PO
N1
XG-PO
N1
XG-PO
N2
XG-PO
N2
Hybrid D
WD
M/XG
-PO
NH
ybrid DW
DM
XG-PO
N
Higher rate TD
M
Higher rate TD
M
Higher rate EC
DM
Higher rate EC
DM
Higher rate O
FDM
Higher rate O
FDM
Other options
Other options
Extended XG-PO
Ns
Extended XG-PO
N
Higher rate D
WD
M
Higher rate D
WD
M
NG-PON1 supports the coexistence with G-PON on
the same ODN
NG-PON2 could be disruptive" with no
requirement for coexistence with G-PON on the same ODN
FSAN NG-PON taxonomy
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FSAN and ITU-T Q2/SG15
Full Service Access Network (FSAN) An interest group for the world's leading telecommunications services
providers, independent test labs, and equipment suppliers to work towards a common goal of truly broadband fiber access networks
85 Members 31 operators, 46 vendors, 8 observers/test labs
ITU-T Q2/SG15 Question 2 of SG15, responsible for optical access networks
1997-2000, ATM-PON (A-PON), G.983 series 2001-2004, broadband PON (B-PON), G.983 series; gigabit PON (G-
PON), G.984 series 2005-2008, improved and extensive enhancement of G-PON 2009-2012, G.987/988 series (XG-PON) and other
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FSAN membersVendors Vendors Observer/ITL OperatorsAdtran Marvell ETRI AT&T ADVA Maxim ICL/ITRI Bell CanadaAlcatel-Lucent Mitsubishi Iometrix British TelecomAlphion Motorola LAN BSNLBroadCom NEC NTT-AT China MobileBroadLight NeoPhotonics RITT China TelecomCalix Nokia Siemens Telcordia China UnicomCambridge Nortel Univ. New Hampshire Chunghwa TelecomComtrend Occam Networks CTBCCortina Opencon Deutsche TelekomECI Telecom OKI duEricsson Optical Zonu ETISALATFinisar Pannaway France TelecomFreescale Phyworks Korea TelecomFujitsu PMC Sierra KuwaitGemfire RAD LPTICHisense-Ligent TECOM NTTHitachi Tellabs Portugal TelecomHuawei TXP Corporation QwestJDS Uniphase Vitesse SaskTelLantiq Zarlink SingTelLG Nortel Zhone SK Telecom/SK BroadbandLS Cable ZTE Embarq/Sprint
Telecom EgyptTelecom ItaliaTelefonicaTelecom MalaysiaTelstraTelusVerizonVodafone
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FSAN Next Generation PON Task Group
FSAN and ITU-T Q2/SG15
Mature technical spec in FSAN is delivered to ITU-T Q2/SG15
ITU-T Q2/SG15 drafts and standardizes PON spec
XG-PON Specifications
General Requirements
PHY and Reach Extension
TC Layer
OMCI
ITU-T Q2/SG15 G.987 Recommendation Series
NG-PON1 White Paper & XG-PON Contributions
G.987.1 for General
Requirements
G.987.2 for PHY and
RE
G.987.3 for TC Layer
G.988 for
OMCI
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NG-PON1 candidate technologies
Physical split reduction (No new technology) WDM bidirectional split reduction (muxed G-PON) WDM downstream-only split reduction (stacked G-PON) XG-PON1: 10G down, Nx2.5G up XG-PON2: 10G symmetric Reach enhanced versions of the XG-PONs
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The selection of XG-PON
1.2G 2.5G Nx2.5G 10G
Upstream
Downstream
1G
2.5G
10G
EPON
G-PON
10/1G EPON
10/10G EPON
Turbo EPON
XG-PON1
Nx2.5G
Nx1.2G
MuxedG-PON
Future Systems (NG-PON2)
StackedG-PON
(XG-PON2)
Acceptablebandwidth asymmetry
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XG-PON Architecture
G-PON OLT
Central OfficeXG-PON OLT
10G Tx
2.5G Rx
WDM
ONUWBF
Single channel 10G DS, single channel 2.5G US TDM/TDMA Sharing ODN with G-PON
ONUTxRx
ONUTxRx
ONUTxRx
ONUTxRx
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XG-PON wavelength plan
1260 1280 1300 1320 1340 1360
GPONup
XG-PONUp
1480 1500 1520 1540 1560 1580 1600 1620 1640
GPONdown
VidOvr
Guardband
Guardband
Guardband
XG-PON Dn
Coexistence with G-PON via WDM No interference on G-PON RF video channel
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XG-PON layering structure
Physical media dependent (PMD) (G.987.2)Power budget, split ratio, distance, line code, line rate, wavelength, optical interface parameters
Transmission convergence (TC) (G.987.3)Scrambler, FEC, DS/US frame structure, DBA control, PLOAM, XGEM, ONU activation, Timing,
security, power saving, performance monitoring
XG-PON encapsulation method
(XGEM) client
Fiber media
Higher layers (frames/packets of Eth, TDM, SDH, IP, )
ONU management and control interface (OMCI)
(G.988)Management of equip, ANI & traffic, layer 2,
layer 3, Eth service, xDSL, TDM service, voice, home networks
XG-P
ON
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Metrocore
Access
BRAS
CR CR
Service PoP
CO
SR
Metro Aggr
FTTB, FTTOFTTH, FTTC
FTTCell
Metroaggregation
XG-PON OLT
XG-PON for full service accessG.987.1
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Physical media dependent (PMD) layer G.987.2
Item Description
Power budget Norminal (29dB, 31dB), coexistence with deployed B+ ODNExtended (33dB, 35dB), coexistence with C+ ODN
Line rate DS: 9.95328 Gb/s (10G nominal)US: 2.48832 Gb/s (2.5G nominal)
Line code Non-return-to-zero (NRZ)
Split ratio Minimum 1:641:128 &1:256 are of high interest
DistanceMaximum fibre distance is at least 20 kmTC layer supports maximum distance of 60 kmTC layer supports maximum differential distance up to 40 km
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Transmission convergence (TC) layerG.987.3
Item Description
PHY adaptationFEC: DS RS(248,216); US RS(248,232)Scrambler: 58-bit frame-synchronous scrambling with preloadBurst profile: adapt to different bursts
XGTC framing DS & US frame, word alignment framing, enhanced PLOAM channel capacity, straightforward BWmap-based TDMA
Service adaptation XGEM: service data unit encapsulation and fragmentation (up to 16K byte PDUs, key index)Timing Time synchronization for mobile backhaul
Security Mutual authentication, unicast/broadcast encryption & key managementIntegrity protection for PLOAM and OMCI
Power saving Doze mode: ONU Rx alive, ONU optionally powering down TxCyclic sleep mode: In a cyclic sleep interval, ONU powers down Rx and Tx
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ONU management and control interface (OMCI) G.988
Item Description
OMCI enhancement
Extending B-PON/G-PON OMCI to support larger PDUs for enhanced efficiencyExtending G-PON OMCI to support emerging services
Security improvement Strong mutual authentication and related management entities
Fault management Improved fault and failure detection/notification via OMCI
Implementers guide XG-PON interoperability, best practices of OMCI
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XG-PON standard as a joint effort
G.987.1General
requirements
Anna Cui (AT&T), Fabrice Bourgart (FT), Junichi Kani (NTT)
G.987.2PMD & RE
Richard Goodson (Adtran), Joe Smith (ALU)
G.987.3Transmission convergence
Denis Khotimsky (Motorola), Yuanqiu Luo (Huawei),Hiroaki Mukai (Mitsubishi)
G.988OMCI David Hood (Ericsson), Wei Lin (Huawei)
Rapporteur: Frank Effenberger
(Huawei)
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XG-PON standard progress
May2009 ITU-T G.987 series editorship announcement, G.987 scope and living list review
Sep.2009 G.987, G.987.1, G.987.2 consent
June2010 G.987.3, G.988 consent
ITU
-T Q
2/SG
15 s
tudy
per
iod
(200
9-20
12)
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XG-PON field trial overview
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XG-PON field trial performance
Verizon field trail in 2009 showed no major technical issues with XG-PON Detailed field trail results were jointly reported by Verizon and Huawei in
OFC2010 postdeadline paper Worlds First XG-PON Trial
Physical layer - Compliant XG-PON trial system meets G.987 specs on loss budget Wavelength: DS-1577.24nm (1577 nm), US-1268.8nm (1270 nm) Receive sensitivity: Meets G.987 specs
Throughput - Compliant Downstream = 10 Gbps, Upstream = 2.5 Gbps
ODN - Compliant Ranging distance up to 35km
Coexistence with G-PON - Compliant No interference between the XG-PON signal and the existing G-PON signal
RF video compatible - Compliant No influence/interference on Video service
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Conclusions FSAN / ITU-T has thought long and hard over the next PON
Coexistence with current deployment is key
Cost effective bandwidth is the watch-word
XG-PON provides a good blend of characteristics Compatibility with G-PON and GE-PON
Higher bandwidth, with acceptable asymmetry
High loss budget capabilities
Low cost for equipment
Timeline Comprehensive standards completed by June 2010 (this month!)
First trial was in 2009 and showed no major technical issues
Significant deployments in 2012
Slide Number 1FSAN NG-PON technology roadmap FSAN NG-PON taxonomyFSAN and ITU-T Q2/SG15FSAN membersFSAN and ITU-T Q2/SG15NG-PON1 candidate technologiesThe selection of XG-PONXG-PON ArchitectureXG-PON wavelength planXG-PON layering structureXG-PON for full service accessG.987.1Physical media dependent (PMD) layer G.987.2Transmission convergence (TC) layerG.987.3 ONU management and control interface (OMCI) G.988 XG-PON standard as a joint effortXG-PON standard progressXG-PON field trial overviewXG-PON field trial performanceConclusions