An Alternative Multicast Transmission Scheme for VCR Operations in a Large VOD System

Authors:
Seung-Won Lee;Ki-Wan Kim;Jung-Min Choi;Ki-Dong Chung
Affiliations:
-;-;-;-
Venue:
ICOIN '02 Revised Papers from the International Conference on Information Networking, Wireless Communications Technologies and Network Applications-Part II
Year:
2002

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Abstract

Multicast delivery is one of solutions to reduce the cost in large VOD systems. However, it is difficult to implement the interactive operations for an individual user in multicast transmission system. In this paper, we propose the Alternative Multicast Transmission Scheme (AMTS) to serve a large number of users and reduce the initial delay while supporting VCR operations. For hot video users, this scheme uses the Frame-Based Multicast Transmission (FBMT) to support both normal playback and VCR playback via the identical channels. The proposed FBMT is to deliver frames via an appropriate channel based on frame type (I, P, B) of MPEG video. The AMTS has better performance than other multicast systems in terms of both initial blocking probabilities and VCR blocking probability.