CDN Research Institute

With the rapid development of Web 2.0 video sharing websites, illegal sharing of copyrighted content and the publishing of unhealthy content have been two emerging and outstanding problems for the whole industry. In our institute, the Special Interest Group of content security (SIGSEC)  focuses on exploring technologies in the areas of multimedia content copy detection, DRM, digital watermarking and multimedia search engine to build a working prototype of Internet multimedia content monitoring and management system, and further developing the system into a CDN service.

 Since 2008, implemented and commercially deployed a Video-on-Demand (VoD) streaming system over ChinaCache, which was used to provide Adobe Flash on-demand streaming service for official Olympic video web site and Chinese largest social network site during the period of 2008 Beijing Olympics. In our institute, the Special Interest Group of VoD streaming system (SIGVOD) is recently working on the system development, optimization and  measurement.   

Resent Publications

• Hao Yin, Xuening Liu, Feng Qiu, Ning Xia, Chuang Lin, Hui Zhang, Vyas Sekar, Geyong Min. Inside the Bird's Nest: Measurements of Large-Scale Live VoD from the 2008 Olympics. To appear in ACM SIGCOMM IMC 2009.

Since 2006, we designed and implemented a hybrid CDN-P2P live video streaming system, LiveSky, commercially deployed by ChinaCache. LiveSky has been used for live broadcasting of several large-scale nationwide events in China, e.g. broadcasting 2007/2008/2009 CCTV Spring Evening, 2008 Beijing Olympics, and so on. Furthermore, we proposed a secure and high-performance streaming architecture, TrustStream, which combines the best features of scalable coding, CDN and P2P, and key management scheme to achieve security, scalability, heterogeneity, and certain QoS simultaneously under a unified architecture. In our institute, the Special Interest Group of live video streaming system (SIGLIVE) is now working on the modeling, measurement and evaluation of large-scale live video streaming system and the key technologies and issues of hybrid CDN-P2P architecture.

Recent Publications

• Hao Yin, Xuening Liu, Tongyu Zhan, Vyas Sekar, Feng Qiu, Chuang Lin, Hui Zhang, Bo Li. Design and Deployment of a Hybrid CDN-P2P System for Live Video Streaming: Experiences with LiveSky. To appear in ACM Multimedia 2009 (Full Paper).