Dec.5, 2003 Globecom’03 Workshop W-2 K. Kitayama, Japan Research project on Optical burst...

Dec.5, 2003 Globecom’03 Workshop W-2

K. Kitayama, Japan

Research project onOptical burst switching network

-Supported by Telecomunications Advancement Organization of Japan-

Ken-ichi Kitayama

Osaka University, JapanE-mail: [email protected]

Osaka Univ.


K. Kitayama, Japan

Outline

Sponsored by Telecomunications Advancement Organization of Japan (TAO)

Participants Coordinator : NTT Communications NTT Network Innovations Laboratories Fujitsu Laboratories University of Tokyo Osaka University

Period: 2001-2005

Total budget: $15 million/5 years ($10 million in 2001-2003)

Osaka Univ.


K. Kitayama, Japan

Current research projects on photonic networkssupported by the Japanese government

Ultra-long & high-speed fiber optic transmissions（ 1996〜 2005）

Ultra-long & high-speed fiber optic transmissions（ 1996〜 2005）

Photonic node for broadband access （ 2000 〜 2005 ）

Photonic node for broadband access （ 2000 〜 2005 ）

Optical burst switching network（ 2001〜 2005）

Optical burst switching network（ 2001〜 2005）

Control plane for terabit networks（ 2001 〜 2005 ）

Control plane for terabit networks（ 2001 〜 2005 ）

PHASE II R&D?（ 2006-2010 ）

PHASE II R&D?（ 2006-2010 ）

Devices for photonic networks（ 2002 〜 2006 ）

Devices for photonic networks（ 2002 〜 2006 ）


K. Kitayama, Japan

Research subjects and their responsibilities- Aiming at high-efficiency photonic networking technology for bursty traffic -

ControlControl

Data burstData burst

Source node Destination node

0

1

2

#3 Optical control packet- Osaka Univ.


　 #4 Optical switch fabric- Fujitsu -


#2 Contention resolution and RWA- Univ. Tokyo -


#1　 OBS network architecture and its control plane- NTT -





K. Kitayama, Japan

Switching time design target & application area - PHASE I: Photonic MPLS extension -

Dat

a V

olu

me

Tra

nsm

itte

d B

y 10

-Gb

it/s

sig

nal

10s1s100ms10ms1ms100μs

1000s

1s

1ms

Photonic MPLSRouter at Present

Sig

nal

len

gth

, b

Switching Time sw (h= 1, L=0 km)

Next GenerationDVD 30 GB

DVD 5 GB

CD650 MB

Super High Definition Still Image 12 MB

km

Round trip delay

TransmissionDistance (L)

1TB(800s)

1GB(0.8s)

1MB(0.8ms)

= 0.9

= 0.5

= 0.99

200msecat present

Target

Switching Time sw <= setup + down

Network Throughput <= b / (b + sw )

Switching Time sw <= setup + down

Network Throughput <= b / (b + sw )

100s

10km 100km

10ms

1000km

100ms

10,000

LAN Metro Nation wide/Global

1ms


K. Kitayama, Japan

.

Switching time design target & application area - PHASE II: One-way protocol -

Dat

a V

olu

me

Tra

nsm

itte

d B

y 10

-Gb

it/s

sig

nal

10s1s100ms10ms1ms100μs

1000s

1s

1ms

Photonic MPLSRouter at Present

Sig

nal

len

gth

, b

Switching Time sw

(h= 1, L=0 km)

Next GenerationDVD 30 GB

DVD 5 GB

CD650 MB

Super High Definition Still Image 12 MB

100s

10km 100km

1ms 10ms

1000km

100ms

10,000km

Round trip delay

TransmissionDistance (L)

LAN Metro Nation wide/Global

= 0.9

= 0.5

= 0.99

200msecat present

Target

1TB(800s)

1GB(0.8s)

1MB(0.8ms)


K. Kitayama, Japan

Demonstration of optical burst data switching- Photonic MPLS extension -

# 1 # i # 3

Monitor

8 10 12 14 16 18 20 22

Optical Power (a.u.)

Time (s)

Moni tor 1

OLSP #2(Bd2) OLSP #1(Bd1)

160 msec

Condition; h= 1, L=0 km

Optical burst data is transmitted by SDH STM-64 (@10Gb/s) framed signal.

OLSP #1

OLSP #2

Photonic MPLS Routerdeveloped by

NTT Network Innovation Labs

OLSP #1 (Obd1)OLSP #2 (Obd2)

Bd2 Bd1

10 msec


K. Kitayama, Japan


ControlControl



0

1

2










K. Kitayama, Japan

3D-MEMS mirror structure

Comb-driven MEMS MirrorComb-driven MEMS Mirror

Large Electro-Static TorqueLarge Electro-Static TorqueLow drive voltage, > 5-degreeLow drive voltage, > 5-degree

High-speed SwitchingHigh-speed Switching

Easy ControllabilityEasy Controllability

1 10 100　0.1 Driving Voltage (V)

1000

Sw

itch

ing

Tim

e (

ms) Parallel-Plate

Comb-Driven1

10

100

1/10

10 mm

80x80 Channels80x80 Channels


K. Kitayama, Japan

Novel folded optical switch

Roof-typeRoof-typeRetro-reflectorRetro-reflector

Input/OutputFiber Array

Input/OutputMicro-lens Array

Input/OutputMEMS Mirror Array

Folded ConfigurationFolded Configuration

with Roof-type Retro-reflectorwith Roof-type Retro-reflector

by a factor of 1/2 of Flat-reflector (Lucent)by a factor of 1/2 of Flat-reflector (Lucent)

Size: 87 x 77 x 53 mmSize: 87 x 77 x 53 mm

Insertion Loss: 3 dBInsertion Loss: 3 dB

Crosstalk: < -40 dBCrosstalk: < -40 dB


Targeting;Targeting;

256x256 Ch.256x256 Ch.

2,000x2,000 Ch.2,000x2,000 Ch.


K. Kitayama, Japan

Optical switch module

BB

H: 1ms/div

Switching

Optical Switch

In #1

In #2

Out #1

Out #2

BBOptical Switch

In #1

In #2

Out #1

Out #2

In #1

Out #1

In #2

AA

Burst ABurst A

Burst BBurst B

Burst ABurst A Burst BBurst BSize: 150(W) x 400(H) x 300(D) mmSize: 150(W) x 400(H) x 300(D) mm

Supply Voltage: 200 VSupply Voltage: 200 V

Power Consumption: 22 WPower Consumption: 22 W


Feed-forward ControlFeed-forward Control1ms


K. Kitayama, Japan


ControlControl



0

1

2










K. Kitayama, Japan

Deflection routing

Deflect blocked bursts to idle fiber links

Save bandwidth A dropped burst wastes the

bandwidth on the partially established path

Save time The delay becomes very

large when retransmitting a blocked burst in long-distance links

F G H I J

A B C D E

Without Deflection

With Deflection

Univ.Tokyo


K. Kitayama, Japan

Priority-based wavelength assignment

Each sender keeps a wavelength priority database for every destination node. By learning from the statistical data of prior transmission results, each node ranks wavelengths for giving prioritized wavelength assignment.

As learning progresses, wavelength spatial reuse becomes possible

Rcv . b Rcv . c Rcv . d Rcv . a Rcv . c Rcv . d Rcv . a Rcv . b Rcv . d Rcv . a Rcv . b Rcv . cDatabase a Database b Database c Database d. Rcv . c Rcv . d Rcv . a Rcv . c Rcv . d Rcv . a Rcv . b Rcv . d Rcv . a Rcv . b Rcv . c

Database b Database c Database d

a b c d

w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4

w1

w3

w4

w2

Rcv . b Rcv . c Rcv . d Rcv . a Rcv . c Rcv . d Rcv . a Rcv . b Rcv . d Rcv . a Rcv . b Rcv . cDatabase a Database b Database c Database d. Rcv . c Rcv . d Rcv . a Rcv . c Rcv . d Rcv . a Rcv . b Rcv . d Rcv . a Rcv . b Rcv . c

Database b Database c Database d

aa bb cc dd

w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4 w1 w2 w3 w4

w1

w3

w4

w2


K. Kitayama, Japan


ControlControl



0

1

2










K. Kitayama, Japan

Tell-and-go protocol using OC-label (OC-TAG)

Source Destination

Offset time

Tim

e

Distance

Burst data

Data transmission

Release signalfor unlimited burst duration

OC-label processing for control packet OC-labeled control packet neglects the

processing time

Processing delay ~ 0

Offset time


K. Kitayama, Japan

Blocking probability: JET vs. OC-TAG

Blocking probability: number of blocked requests / number of requests Processing delay at node: 1.0ms (JET case) Number of wavelengths: 32 or 64 No retransmission if data loss occurs

Arrival rate

Mea

n bl

ocki

ng p

roba

bilit

y

Osaka Univ.


K. Kitayama, Japan

OC-label processing for control packet

Optical switch

Burst data

Offset time

Electrical processingElectrical processing

O/E E/O

OC-labeled control packeton out-of-band wavelength 0

OC OC’OC-label processorOC-label processor

Ultrafast setup of optical path

Osaka Univ.

OC-labelfor LSP

OC-lablefor


K. Kitayama, Japan

Experimental OC-labeled control packet processings

LN-IMLN-IM Decoder1Decoder1

Encoder3Encoder3

SASA Encoder4Encoder4

Gate signalgenerator

Gate signalgenerator

Optical mask

Add the available wavelength 2

20m

V/d

iv

100ps/div

R2 R2

20m

V/d

iv

0 0

8-chip OC-label

Osaka Univ.

100ps/div

LabelsR1

LabelsR1

20m

V/d

iv20

mV

/div

20m

V/d

iv

1×2Switch

1×2Switch

Label R1 recognition

Label swapping from R1 to R2

PPGPPG

Cross-correlation

Auto-correlation


K. Kitayama, Japan

Summary

National R&D project, particularly focus on OBSComprehensive program from optical switch, transport

plane, control plane, and management plane

Field trials in the network testbed planned;PHASE I in 2003-2004: Photonic MPLS extentionPHASE II in 2005: Novel RWA & OC-label processing

Osaka Univ.


K. Kitayama, Japan

Thank you!

Dec.5, 2003 Globecom’03 Workshop W-2 K. Kitayama, Japan Research project on Optical burst...

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