Huawei Railway Backbone OTN Solution
Challenges to Existing Railway BackboneNetworks ◆ Railways are going both digital and wireless. Smart management, HD video surveillance,
Wi-Fi connections, and wireless transmission services are becoming increasingly important to railway systems. Railway backbone networks face huge challenges.
Railway Bureau Backbone OTN
Universal Transport Network
NationalBackbone OTN
RailwayCorporation
n*100G
n*10G
40G/10G 40G/10G
n*10G
StationLSP/PW
ODUk/VC/λ
WavelengthDispatch Center
U2000
High Reliability and Security• Ensure security by physically isolating mission-critical services that are related to the security of railway systems.• Ensure high reliability by enabling networks to prevent multiple points of failure.
Ultra-High Bandwidth• Meet the requirements of increased distances and sites and new services, such as video, Wi-Fi, wireless, and HD video surveillance.
10G λ
40G λ
100G λ
400G λ
1T/2T λ
RTU
Telephone
GSM-R
OA
Video Conference
CCTV
Smart OAM • Smart health monitoring and tuning• Fast fault diagnosis
SLA Meter
User A Video Stream
24H History ReportService 2 4 6 8 10 12 14 16 18 20 22 24
Delay Jitter PacketLoss
Tra�c
Huawei Railway Backbone OTN Solution100G coherent communication provides ultra-high bandwidth.
Wavelengths and channels are physically isolated to avoid interferenceand improve security.
Beyond 100G• 6000 km• Reliable
No Tx-DSP: 100G pulsewidth > 10G
With Tx-DSP: 100G pulse width ≈ 10G
Tx-DSP Pre-Shaping
Launch power = 10G
RZ Modulation &
Bit Interleaving -4 -2 0 2 4 6 8 10 120
1
2
3
4
Q P
enal
ty (d
B)
NRZ alignedRZ alignedNRZ interleavedRZ interleaved
Industry QPSK: Guard band > 100 GHZ
Huawei QPSK: Guard band
≈ 0
Enhanced QPSK
Guard Band
AdvancedFEC
AlgorithmN-bit quantization,100G NCG > 11.8 dB
5.4 5.6 5.8 6 6.2 6.410
LDPC-CC(10032,4,24): LDA I = 12
LDPC-BC(18360,4,24): LDA I = 12max
max
Bit
Err
or R
ate
-15
10-2
10-3
10-4
10-6
10-7
10-8
10-9
10-10
10-11
10-12
10-13
10-14
10-5
Q (dB)
0.3 dB improve fromLDPC to BICC
*BICC: Block InterleaveConvolution Code
72-hour High & LowTemperature Cycling Veri�cation
One Cycle 12-hour
Three Cycles
5℃/min
+25℃
+50℃
-10℃12-hour
Partner with the Best Quality
Supplier
MS-OTN10G/100G
ODU2
ODU2
ODU0
ODU1STM-N
VCTelephone
Wireless
TDCS/CTC
LTETMIS
VSVC
DevelopmentTransport
PIS
MarketingInternet
Communication
VC
VC
ODU0
ODU0
ODU0
ODU0
ODU0
…
All support 1588v2
Total BW: 101.5–107.5G
OTN ensures high network reliability by providing multiple types of protection to prevent multiple points of failure.
1
2
3
4
5
Equipment 1+1 protection
Client 1+1 protection
ODUk SNCP protection
Intra1+1 protection
Optical line 1+1 protection
Server
FC/GE/10GE
Server
FC/GE/10GE
Server
FC/GE/10GE
Server
FC/GE/10GE
Server
FC/GE/10GE
OLP
OTU-1#1
OTU-2#2
OLP/DCP
OTU-1
OTU-2
TOA
NS2
NS2
OTU
OTUOLP
The U2000 can monitor management and commissioning services, simplifying O&M.
OSNR, Power, BER
Onlinemonitor
Fastdiagnosis
Automaticoptimization
Online Optical Doctor
Onlinetest
High-precision
Optimalpath
Online Latency Measurement
E2E latency
xx km
Onlinetest
Onlineveri�cation
Fastdiagnosis
Online Fiber Doctor
OSC board (w/i eOTDR)
Product FamilyOSN 8800 T16 | OSN 8800 T32 | OSN 8800 T64
OSN 8800 T16 OSN 8800 T32 OSN 8800 T64
16 32 64Service Slots
Maximum Line Rate
900 × 498 × 295 900 × 498 × 580 450 × 498 × 295Dimensions(H x W x D)(mm)
ODUk (k=0, 1, 2, 2e, 3, 4, �ex)
200G
1.6T ODUk 3.2T ODUk 6.4T ODUkOTN
Packet
TDM
ODUk
800G
640G VC-420G VC-3/VC-12
1.6T
1.28T VC-480G VC-3/VC-12
-
1.28T VC-480G VC-3/VC-12
Electrical SwitchingCapability
OSN 9800 U16 | OSN 9800 U32 | OSN 9800 U64
OSN 9800 U16 OSN 9800 U32 OSN 9800 U64
14 32 64Service Slots
1900 × 498 × 295 2200 × 600 × 600847 × 442 × 295Dimensions(H x W x D)(mm)
ODUk (k=0, 1, 2, 2e, 3, 4, �ex)
400GMaximum Line Rate
5.6T ODUk 12.8T ODUk 25.6T ODUkOTN
Packet
TDM
ODUk
2.8T
1.12T VC-480G VC-3/VC-12
6.4T
2.56T VC-480G VC-3/VC-12
12.8T
5.12T VC-480G VC-3/VC-12
Electrical SwitchingCapability
285(h)
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By Enterprise Transport MO & Information Dept.
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