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.


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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.