study group 15 atefeh khatiri nastaran nikouienejad · odu provides end-to-end bandwidth management...
TRANSCRIPT
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STU D Y GR OU P 1 5
ATEFEH KHATIR I
&
N A S TA R A N N IKOU IEN EJ A D
OTN
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OTN Hierarchy
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OTN Frame
1 4080
4
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OTN Frame
3825
4080
1 7 8 14
15
16
17
3824
1
2
3
4
OPU k Payload
OP
Uk
OH
OPUk - Optical Channel Payload Unit
ODUk
ODUk - Optical Channel Data Unit
Client Signal
mapped in
OPUk Payload
Client Signal
OTUkFEC
OTUkOH
OTUk - Optical Channel Transport Unit
Alignm
Alignment
k indicates the order:
1 2.5G
2 10G
3 40G
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Multiplex - Structure
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OPU Overhead
Mapping and provides information on the type of signal transported
Payload Structure Identifier
PSI[0]=PT
Justification Control
Negative Justification Opportunity
Positive Justification Opportunity
Required for asynchronous mapping
15 16 17
1
2
3
4
RES JC
RES JC
RES JC
PSI NJO PJO
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ODUk Overhead
Path monitoring(PM)
Tandem Connection Monitoring (TCM)
FTFL: Fault Type and Fault Location reporting channel
GCC: General Communication channel
APS/PCC : Automatic Protection Switching/Protection Communication channel
1 2 3 4 5 6 7 8 9 10 11 12 13 14
2 RES TCM ACT
TCM6 TCM5 TCM4 FTFL
3 TCM3 TCM2 TCM1 PM EXP
4 GCC1 GCC2 APS/PCC RES
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Path monitoring(PM)
1 2 3
TTI BIP-8
SAPI
DAPI
OperatorSpecific
1 2 3 4 5 6 7 8
BEI BDI STAT
ODUk-AIS
ODUk-OCI
ODUk-LCK
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TCM
1 2 3
TTIi BIP-8i
SAPI
DAPI
OperatorSpecific
1 2 3 4 5 6 7 8
BEIi/BIAEi BDIi STATi
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OTU Overhead
1……………….…7 8…………………14 3825……………….…..4080
FAS OTU-OHFEC
1 2 3
SM GCC0 RES
1 2 3
TTI BIP-8
SAPI
DAPI
OperatorSpecific
1 2 3 4 5 6 7 8
BEIi/BIAE BDI STAT
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OTN Maintenance Interaction
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Optical Layer Overhead
BDI: Backward Defect IndicationFDI-O: Forward Defect Indication - Overhead
FDI-P: Forward Defect Indication - Payload
OCI: Open Connection IndicationPMI: Payload Missing Indication
TTI: Trail Trace Identifier
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ODU & OCH Switching
OCh provides end-to-end bandwidth management for a wavelength signal in the photonic domain ODU provides end-to-end bandwidth management for a sub-wavelength signal in the electronic domain
is a fixed-sized container with in-band OAM tools for quality supervision and SLA assurance functions as primary bearer for client traffic Lower Order (LO-ODU) transparently carries 1.25G, 2.5G, 10G, 40G, 100G client signal rates Higher Order (HO-ODU) transparently carries multiple (multiplexed) LO-ODUs
WDM switching
ODU switching ODU switching
WDM switching
Line amplifier Line amplifier
1:N
1:N
N:1
N:1
Electronic domain
Optical Transport Section (OTS)
Optical Multiplex Section (OMS) - multi-wavelengths
Optical Channel (OCh) - wavelength
Optical Channel Data Unit (ODU) - sub-wavelength
Photonic domain
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Photonic Switching
Colorless & Directionless ports
Wavelengths to/from a specific direction can
be re-routed to any other direction
The Mux/Demux functionality is not associated
to any specific direction
Wavelengths to/from a specific direction can
be add/drop by shared Mux/Demux resources
Line 4
Degree-4
Wavelength
routing
Line 3
…
Line 2Line 1
…
Line 4
Degree-4
Wavelength
routing
Line 3
…
Line 2Line 1
Colored & Directional ports (traditional)
Wavelengths to/from a specific direction can
be re-routed to any other direction
The Mux/Demux functionality is distributed
among the different directions
Wavelengths to/from a specific direction can
only be add/drop by the specific Mux/Demux
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point-to-point link
without OADM
(degre-1)
point-to-point link
with OADM
(degree-2)
Ring configuration
Meshed network
(degree-N)
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OTN Deployment
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Worldwide OTN Application(Until June 2011)
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با تشکر از توجه شما
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Forward Error Correction (FEC)
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Protection techniques
Trail protection
Sub network connection(SNC) protection
Share ring protection