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Peer-Assisted Delivery: The Way To Scale IPTV To The World
Speaker: Dr. Jin LI Principal Researcher Microsoft Research (Redmond) Title: "Peer-Assisted Delivery: The Way To Scale IPTV To The World" Date: Monday, 3 September 2007 Time: 4:00pm - 5:00pm Venue: Lecture Theatre F (Leung Yat Sing Lecture Theatre, near lift nos. 25/26) HKUST Abstract: IPTV is one of the fast growing services. We survey the operation and the infrastructure that supports the IPTV: the data center, the Internet, and the end user, and discuss issues that affect the global scalability of IPTV. We show that the client-server model cannot support large scale IPTV delivery, and the peer assisted IPTV service without locality awareness will quickly overrun the Internet backbone when the number of subscribers increases. Peer-assisted delivery with locality is the only way to scale IPTV to the world. We proceed to quantify the benefit of peer-assisted IPTV. Using a nine-month trace from a client-server IPTV deployment for MSN Video, we show that peer-assistance IPTV can dramatically reduce server bandwidth costs, particularly if peers prefetch content when there is spare upload capacity in the system. We consider the impact of peer-assisted VoD on the cross-traffic among ISPs. We also develop a simple analytical model which captures many of the critical features of peer-assisted VoD, including its operational modes. ******************** Biography: Dr. Jin LI is currently a principal researcher managing the communication subgroup at Microsoft Research Redmond. He has worked in a diversified research field, ranging from audio/image/video compression, virtual environment and graphic compression, audio/video streaming, realtime audio/video conferencing, peer-to-peer content delivery, distributed storage, etc.. He received his Ph.D. in electrical engineering from Tsinghua University (Beijing, China) in 1994. From 1994 to 1996, he served as a Research Associate at the University of Southern California (USC). From 1996 to 1999, he was a member of the technical staff at the Sharp Laboratories of America (SLA), (Camas, WA), and represented the interests of SLA in the JPEG2000 and MPEG4 standardization efforts. He was a researcher/project leader at Microsoft Research Asia (Beijing, China) from 1999 to 2000. From 2000, Dr. Li has also served as an adjunct professor at the electrical engineering department, Tsinghua University (Beijing, China). Dr. Li has 80+ referred conference and journal papers. Dr. Li is an Area Editor for the Journal of Visual Communication and Image Representation (Academic Press) and an associate editor of IEEE Transactions on Multimedia. He is a senior member of IEEE. He was the recipient of the 1994 Ph.D. thesis award from Tsinghua University and the 1998 Young Investigator Award from SPIE Visual Communication and Image Processing.