A High Quality Multicasting Scheme for Block Transmission Type Video Distribution Systems(Switching for Communications)
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概要
- 論文の詳細を見る
The block-based fast transmission scheme, which is one of typical stored video delivery schemes, is reasonable in terms of its bandwidth efficiency and tolerance to the delay jitter, etc. However, it causes packet loss because of its burst data transmission method. Thus, we propose a slotted multicast scheme for MPEG video based on the block transmission scheme to maintain a higher quality and to include time constraints. We define two delivery units, the "GoPs Group" and the "Frame Type," on the basis of the MPEG characteristics with periodical NACK feedback from the clients. The former is tolerant to burst packet loss, and the latter gives priority to important frames. Our block multicast has two phases: a "Transmission Phase" and a "Retransmission Phase." In the former, a server multicasts a block, and in the latter, a server retransmits lost packets using multicast according to the proper delivery unit. We evaluate our proposal from some viewpoints with a computer simulation. We also measure the quality of the video reflected the result of a computer simulation. From these results, we confirm performance effectiveness of our proposal.
- 社団法人電子情報通信学会の論文
- 2004-10-01
著者
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Miyamoto Shingo
Department of Obstetrics and Gynecology, Faculty of Medicine, Fukuoka University
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Miyamoto Shingo
Department Of Allergy And Rheumatology Japanese Red Cross Medical Center Hospital
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Miyamoto Shingo
Department Of Information Networking Graduate School Of Information Science And Technology Osaka Uni
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TODE Hideki
Department of Information Networking, Graduate School of Information Science and Technology, Osaka U
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MURAKAMI Koso
Department of Information Networking, Graduate School of Information Science and Technology, Osaka U
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Tode Hideki
Department Of Information Networking Graduate School Of Information Science And Technology Osaka Uni
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Tode Hideki
Department Of Computer Science And Intelligent Systems Graduate School Of Engineering Osaka Prefectu
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Murakami Koso
Department Of Information Networking Graduate School Of Information Science And Technology Osaka Uni
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