AVD:A Router-Assisted On-Demand Video Delivery Service (特集:ブロードバンドネットワークサービス)
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概要
- 論文の詳細を見る
At this time, high quality on-demand video streaming services are expected to be one of the most promising applications of Content Distribution Networks because of the wide-area deployment of broadband network and the advanced improvement of the video compression technologies. This paper proposes a simple and efficient mechanism called Active Video Delivery (AVD) that provides an efficient group communication service for on-demand video systems. This mechanism utilizes the efficiency of the forwarding paradigm provided in IP Multicast and the flexibilities in control and deployment introduced in Application-layer Multicast. Unlike the traditional IP Multicast approach, the AVD mechanism is incrementally deployable. Only the branching Active Routers (AR) are required to maintain the forwarding state. In addition, since the AVD mechanism performs the underlying Unicast forwarding to achieve Multicast-like service, no specific Multicast group needs to be defined. In this paper, we describe how to construct an AVD tree where a Multicast-like delivery service can be achieved. Additionally, we present a true on-demand algorithm called Video Merging that can be built on top of the AVD tree. Both in our analytic model and simulation results, we have demonstrated that with a properly chosen AVD stream regeneration threshold, this AVD mechanism allows for significant reductions in the video server bandwidth requirement, the network cost and the average link load. In addition, we have evaluated the AVD performance according to varied percentages of routers that are ARs deployed in the simulation network.
- 一般社団法人情報処理学会の論文
- 2004-02-15
著者
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Yasuda Hiroshi
The University Of Tokyo
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Yasuda Hiroshi
The University Of Tokyo Rcast
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Aoki Terumasa
The University Of Tokyo
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Aoki Terumasa
Research Center for Advanced Scienece and Technology The University of Tokyo
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Yasuda H
The University Of Tokyo
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Hsu Chih-chang
Rcast The University Of Tokyo
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AOKI TERUMASA
RCAST, The University of Tokyo
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YASUDA HIROSHI
RCAST, The University of Tokyo
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Aoki Terumasa
Rcast The University Of Tokyo
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Aoki Terumasa
Research Center For Advanced Science And Technology University Of Tokyo
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