Optical Networking Research in China
Jian Wu
Beijing University of Posts and
Telecommunications
May. 2006
TNC-2006
Outline
Introduction
3TNET
OBS network
Future Research Activities & Plans
Conclusion
May. 2006
TNC-2006
Optical Network in China(mainland)
The Optical Cable
Installed: 4 Million km
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TNC-2006
Technologies in Current
Telecommunication Network
Telephony
PDH
Internet
SDH
WDM
Transport
Network
Optical Fiber
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Service
Network
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Fiber cable
Backbone Transport Network
 WDM Network and SDH Network
 Long Haul: 80/160×10Gb/s DWDM
 Regional Network: 40×10Gb/s DWDM
 Metro Network: 10Gb/s SDH Ring and 40×10Gb/s
DWDM
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National Supporting Projects
 “863”:
National High-tech R&D
Program
 “973”:
National Fundamental
Research Program
 NSFC:
National Natural Science
Foundation of China
 5-year Plan Founding
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3TNET
(China High-Performance Broadband
Information Network Testbed)
 2002 - 2005
 Tbps Transmission
 Tbps Switch
 Tbps Router
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3TNET Field Trial in Yangtze River Delta
The
Yangtse
River
Delta is a
region in
Shanghai,
Jiangsu,
and
Zhejiang
Province.
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Participants
Carriers: China Telecom (Shanghai)
Institutions: RITT,MII and ST
Manufacturers: ZTE, WRI (Fiberhome),
Huawei and Datang
Universities: SJTU, Tsinghua, BUPT,
ESTU, Peking, ZJU and SEU
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3TNET
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ASON Topology In Yangtze River Delta
ZJU
SiTV
SH-Telecom
B-Star
SEU
SJTU
Nanjing
May. 2006
Shanghai
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Hangzhou
3TNET
Transmission:
Shanghai-Nanjing(~300km),
Shanghai-Hangzhou(~250km),
80*40Gb/s,
Raman amplification,
PMD control,
Modulation format,
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3TNET
ASON Switch:




GMPLS based control plane,
Non-blocking 320 to 720 Gbps,
Physical interfaces: SDH (STM-N) and
Ethernet 1G and 10G,
Multicasting
IP Router:
Tbps, IPv4/v6
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3TNET
User Bandwidth:
46M
1 x HDTV(~25M),
2 x SDTV(~7M),
Plus Internet access
Users
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~20000
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OBS Network Testbed
 Since 2002
 BUPT, SJTU and WRI
 Basic research
Prototype equipment
Testbed
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OBS testbed (Phase 1)
Jun 2002 - Oct 2004
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Research on
Signaling scheme
Assembly algorithm
Scheduling algorithm
QoS provision and
contention resolution
Develop a star OBS
network testbed
Prototype of Edge Node
Edge Node
•8*1.25Gbps
•GE/FE interface
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Prototype of Core Node
OXC
Control Unit
Switching matrix size up to 32*32
Switching speed<50ns
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OBS testbed (Phase 2)
Jan 2005 - Apr 2006
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Research on
Combination of MPLS
and OBS
Develop a mesh LOBS
network testbed
Grid Application
International
collaboration (Essex
Univ., KDDI)
Prototype of OBS Phase(2)
4*4,high speed driver
High voltage impulse: Vp-p =400v
Switch Rate > 100KHz
Rising_edge and falling_edge =60ns
Edge node
2.5Gbps
Random burst length
Expand to 10Gbps
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Core node
Experimental result of OBS Testbed
Edge node: 1.25Gbps burst-mode transceiver
on-off time for data burst
adjacent burst
eye diagram for data burst
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Experiment result of OBS Testbed
Switching window of optical switching matrix
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Experimental Result – data transmission
Max download speed：41415.7KB/s
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Experimental result: multi-services
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Next Generation Optical Network and Services
 Features
Service-oriented,
Flexibility,
Dynamic,
Scalability, End to End Qos, Mobility, More
Efficiency, …
 IP Based Services
Stream Media (IPTV, Online game, VOD,
Video Conference, e-learning,…), Voice,
SAN, …
 Creative Technologies, Creative Architecture
for Various New Services
National 11th 5-year Research Plan are under
discussion
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Architecture of Dynamic, Flexibility Optical
Network
 Service-oriented
Environment
Application
 Dynamic, Flexibility Architecture for
Optical Network
 Controllable and manageable Resource
Allocation Mechanism
 Middleware
 Qos Issue in Optical Network
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Photonic Grid
 Architecture for Photonic Grid, …
 Control Mechanism, Signaling Protocol,
Routing Technology, …
 Resource
Allocation
Organized, …
 MPLS Control Plane
 Grid Interface, …
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and
Self
Optical Switching and Interconnecting
 Optical Packet/Burst Switching
 Optical Performance Monitoring
 Optical Signal Processing
 Multicasting
 Tunable Components for Switching
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Conclusions
 Advanced technology based and Services
oriented National Backbone Network
 Extensive Study on Next Generation Optical
Network and Services in China
 Collaboration Between Academy and Industry
 National 11th 5-year Research Plan will be
launched soon
May. 2006
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Thank you
www.bupt.edu.cn
jianwu@bupt.edu.cn
86-10-62282332
May. 2006
TNC-2006