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IEICE TRANSACTIONS on Communications

Effect of Limiting Pre-Distribution and Clustering Users on Multicast Pre-Distribution VoD

Noriaki KAMIYAMA, Ryoichi KAWAHARA, Tatsuya MORI, Haruhisa HASEGAWA

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Summary :

In Video on Demand (VoD) services, the demand for content items greatly changes daily over the course of the day. Because service providers are required to maintain a stable service during peak hours, they need to design system resources on the basis of peak demand time, so reducing the server load at peak times is important. To reduce the peak load of a content server, we propose to multicast popular content items to all users independently of actual requests as well as providing on-demand unicast delivery. With this solution, however, the hit ratio of pre-distributed content items is small, and large-capacity storage is required at each set-top box (STB). We can expect to cope with this problem by limiting the number of pre-distributed content items or clustering users based on their viewing histories. We evaluated the effect of these techniques by using actual VoD access log data. We also evaluated the total cost of the multicast pre-distribution VoD system with the proposed two techniques.

Publication
IEICE TRANSACTIONS on Communications Vol.E96-B No.1 pp.143-154
Publication Date
2013/01/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E96.B.143
Type of Manuscript
PAPER
Category
Network

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