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

OTN Hierarchy

OTN Frame

1 4080

4

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

Multiplex - Structure

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

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

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

TCM

1 2 3

TTIi BIP-8i

SAPI

DAPI

OperatorSpecific

1 2 3 4 5 6 7 8

BEIi/BIAEi BDIi STATi

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

OTN Maintenance Interaction

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

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

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

point-to-point link

without OADM

(degre-1)

point-to-point link

with OADM

(degree-2)

Ring configuration

Meshed network

(degree-N)

OTN Deployment

Worldwide OTN Application(Until June 2011)

با تشکر از توجه شما

Forward Error Correction (FEC)

Protection techniques

Trail protection

Sub network connection(SNC) protection

Share ring protection