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Regional Multicasting Testbed in China

Regional Multicasting Testbed in China. Weisheng Hu 1) State Key Lab of Advanced Optical Communication Systems and Networks (Shanghai Jiao Tong University), 2) Task Force of 3TNET, 863 Program, Shanghai 200240, China. Outline. Motivation The Overlay Model Prototype Demonstration

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Regional Multicasting Testbed in China

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  1. Regional Multicasting Testbed in China Weisheng Hu 1) State Key Lab of Advanced Optical Communication Systems and Networks (Shanghai Jiao Tong University), 2) Task Force of 3TNET, 863 Program, Shanghai 200240, China

  2. Outline • Motivation • The Overlay Model • Prototype Demonstration • Field Trial in 3TNET • Conclusions

  3. Motivation: Broadband Applications • We are looking for “killer applications”. • General consensus is multimedia services for communication and entertainment. TV Broadcast/ Interactive Requirements: E-mail, chat, and instant message • More bandwidth • Multicasting • ‘Always on’ • More security • Better availability • Strict quality of service VOD Video Communication • COMMUNICATION • ENTERTAINMENT Unified messaging Gaming On-line Music or download IP based/Telephony

  4. Challenges • Multicast is critical for many applications: • Content distribution, IPTV, HDTV…… • Multicast for bandwidth efficiency • Existing solutions: • xDSL: for “broadband” at ~2Mb/s mainly on Internet, not enough for DTV/HDTV. • Cable TV: uni-directional (broadcasting) without interaction. • IP network: efficient and flexible bandwidth, but taking risks for mission-critical operations (e.g. TV) at reliable quality. • 3TNET: A national project of China during 2002-06.

  5. Outline • Motivation • The Overlay Model • Prototype Demonstration • Field Trial in 3TNET • Conclusions

  6. Optical multicast vs. IP multicast IP multicast: • Flexible group management • Not scalable in routing and address management • Lack of QoS and TE support • Security issues Optical multicast: • No store and forward delay • Coarse granularity • Enhanced virtual connectivity • Improved optical network performance

  7. Our scheme: to integrate both merits To provide carrier-class large-scale reliable live services (e.g.DTV/HDTV) to end users. IP multicast: • Flexible group management • Not scalable in routing and address management • Lack of QoS and TE support • Security issues Optical multicast: • No store and forward delay • Coarse granularity • Enhanced virtual connectivity • Improved optical network performance To Leverage the merits of efficient IP multicast and reliable high-speed optical multicast in a multicasting network.

  8. The Overlay Model • Optical Multicast in the core. • IP Multicast at the edge. Overlay Multicast Network Optical Multicast (core) IP multicast (edge) End users (access)

  9. Multicast Flow Aggregation Great Gap between one light tree and one flow! Multicast Flow Aggregation can significantly reduce the number of light trees in the core . Yi Zhu et al., JSAC, June 07

  10. Outline • Motivation • The Overlay Model • Prototype Demonstration • Field Trial in 3TNET • Conclusions

  11. Prototype Demonstration Management Plane: Network and Service Service Plane: Scheduling and Aggregation Mc-IP Control Plane: Mc-ASON NNI and UNI extensions Data Plane: Mc-OXC Weisheng Hu et al., ECOC’03 (Invited) Weiqiang Sun et al., OFC’05 Xueqing Wei et al., ECOC’05 Yi Zhu et al. Globecom’05

  12. Performance Measurement Delay and jitter vs. link load Overlay Mc-IP over Mc-ASON has lower delay and jitter than pure Mc-IP does. Weiqiang Sun et al., OFC’05

  13. Control Plane Extension • NNI: Compatible with IETF (RFC4461 and several drafts). • UNI: Submitted a document to OIF in 2005. Operations: • Setup • Teardown • Graft • Prune Signaling trace UNI P2MP Object extended for dynamic P2MP. Xueqing Wei et al., ECOC’05

  14. Signaling Experimental Results Test cases and operation time Xueqing Wei et al., ECOC’05

  15. Service Scheduling • IP multicasting group management • Dynamic P2MP light-trees • Fast TV channel zapping Yi Zhu et al., Globecom’05

  16. Interim Summary to Prototype Demo • Merits of Overlay Multicasting Network (edge Mc-IP over core Mc-ASON): • Better performance with lower delay and jitter. • More scalable with reduced Multicast state. • More reliable and improved QoS. • Better survivability. • Could be used in 3TNET Field Trial

  17. Outline • Motivation • The Overlay Model • Prototype Demonstration • Field trial in 3TNET • Conclusions

  18. 3TNET Project • A national project at ~USD30m funded by “863” Program of China. • Goals: to build a high performance trial network to support large-scale concurrent streaming media and interactive multimedia broadband service (DTV/DHTV) in Yangzte River Delta centered at Shanghai. 2003-2004 Specification Development 2005 Field Trail 2006 … 2002 Initiation

  19. Participants Task Force: five members, including SJTU • Carriers and SPs: China Telecom, SiTV, CETV, B-Star • Venders: Huawei, ZTE, Fiberhome, Harbor, Amoi, Zoom • Universities: IEU, PKU, SJTU, Tsinghua, Fudan, USTC, BUPT, ZJU, SEU • Institutes: CAS (IoA), RITT, ABS

  20. 3TNET: A Layered View Core Metro Access e-Shanghai IP DTV/HDTV Application Application Supporting Environment (Proprietary Middleware) 3TNet Routing Tb/s Router Tb/s ASON Transport/ Switching Tb/s DWDM Wu Jiangxing, APOC’05 (plenary)

  21. TV Station: DTV and HDTV • Headend DVB-IP: to provide 115 digital television channels (DTV) at ~6Mb/s and 1 HDTV (high definition TV) at ~25Mb/s. 1) To Network TVs SJTU

  22. Mc-ASON: P2MP 2) To ASON

  23. Mc-ASON/GMPLS • Benefits: • Fast provisioning • Easier network operation • Higher network reliability • Simpler planning and design • Scalability Fiberhome FonsWeaver780 Huawei OSN9500 • Multicasting capability • Multi-vendor inter-operability

  24. Multicast Convergence IP Network 3) To IP ACR: Access Convergence Router EMD: Ethernet-based Multiplexer and Demultiplexer 10GE RIU: Remote Interface Unit GE FE End users: ~41 Mb/s per each

  25. ACR in 3TNET ACR • ACR (Access Convergence Router) • Highly centralized access router. • For tree topology in access networks. • Key features of ACR: • Multiple rate flow classification and control. • Mixed usage of private and public addresses. • Greater than 2000 dynamic multicast trees. Huawei

  26. Field Trial in Yangtze River Delta Yangtze River Delta: centered at Shanghai, including Hangzhou, and Nanjing. Yangtze River

  27. End Users and Access Zones • Shanghai • SiTV station: 116 DTV Channels (including HDTV) • B-Star: 12000 Households • China Telecom: 1000 FTTH Households • SJTU: 5000 users • Hangzhou • ZJU: 5000 users • Nanjing • SEU: 5000 users

  28. Inter domain Multicasting Test Cases and times J Wang, OFC2007, OMJ3

  29. Outline • Motivation • The Overlay Model • Prototype Demonstration • Field Trial in 3TNET • Conclusions

  30. Conclusions • 3TNET is a circuit- and packet-switched hybrid integrated network to support large-scale inactive and live streaming media. • A large-scale field trial was carried out in Yangtze River Delta centered at Shanghai. • An Overlay Mc-IP over Mc-ASON with GMPLS extension is field trialed to deliver 115 DTVs at ~6Mb/s and 1 DHTV at ~25Mb/s to ~30000 users. • Much more users will be accessed into the 3TNET in the next five years.

  31. Thank you! wshu@sjtu.edu.cn

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