Optical Networking Research in China

1
Optical Networking Research in China
Jian Wu Beijing University of Posts and
Telecommunications
2
Outline

• Introduction
• 3TNET
• OBS network
• Future Research Activities Plans
• Conclusion

3
Optical Network in China(mainland)
The Optical Cable Installed 4 Million km
4
Technologies in Current Telecommunication Network
Telephony
Internet
Service Network
SDH
WDM
PDH
Transport Network
Optical Fiber
Fiber cable
5
Backbone Transport Network

• WDM Network and SDH Network
• Long Haul 80/16010Gb/s DWDM
• Regional Network 4010Gb/s DWDM
• Metro Network 10Gb/s SDH Ring and 4010Gb/s DWDM

6
National Supporting Projects

• 863 National High-tech RD Program
• 973 National Fundamental Research Program
• NSFC National Natural Science Foundation of
  China
• 5-year Plan Founding

7
3TNET(China High-Performance Broadband
Information Network Testbed)

• 2002 - 2005
• Tbps Transmission
• Tbps Switch
• Tbps Router

8
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

10
3TNET
11
ASON Topology In Yangtze River Delta
Nanjing
Hangzhou
Shanghai
ZJU
SiTV
SH-Telecom
B-Star
SEU
SJTU
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3TNET

• Transmission
• Shanghai-Nanjing(300km),
• Shanghai-Hangzhou(250km),
• 8040Gb/s,
• Raman amplification,
• PMD control,
• Modulation format,

13
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

14
3TNET

• User Bandwidth
• 46M
• 1 x HDTV(25M),
• 2 x SDTV(7M),
• Plus Internet access
• Users 20000

15
OBS Network Testbed

• Since 2002
• BUPT, SJTU and WRI
• Basic research
• Prototype equipment
• Testbed

16
OBS testbed (Phase 1)

• Jun 2002 - Oct 2004
• Research on
• Signaling scheme
• Assembly algorithm
• Scheduling algorithm
• QoS provision and
• contention resolution
• Develop a star OBS
• network testbed

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Prototype of Edge Node

• 81.25Gbps
• GE/FE interface

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Prototype of Core Node
Switching matrix size up to 3232 Switching
speedlt50ns
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OBS testbed (Phase 2)

• Jan 2005 - Apr 2006
• Research on
• Combination of MPLS
• and OBS
• Develop a mesh LOBS
• network testbed
• Grid Application
• International
• collaboration (Essex
• Univ., KDDI)

20
Prototype of OBS Phase(2)

• 
  44,high speed driver
• High voltage
  impulse Vp-p 400v
• Switch Rate gt
  100KHz
• Rising_edge
  and falling_edge 60ns

• Edge node
• 2.5Gbps
• Random burst length
• Expand to 10Gbps Core node

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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
22
Experiment result of OBS Testbed
Switching window of optical switching matrix
23
Experimental Result data transmission
Max download speed41415.7KB/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 Application Environment
• Dynamic, Flexibility Architecture for Optical
  Network
• Controllable and manageable Resource Allocation
  Mechanism
• Middleware
• Qos Issue in Optical Network

27
Photonic Grid

• Architecture for Photonic Grid,
• Control Mechanism, Signaling Protocol, Routing
  Technology,
• Resource Allocation and Self Organized,
• MPLS Control Plane
• Grid Interface,

28
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

30
Thank you
www.bupt.edu.cn jianwu_at_bupt.edu.cn 86-10-62282332