QoS Enhancement Methods for MPEG Video Transmission on the Internet
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概要
- 論文の詳細を見る
The advances in services using the present Internet mean that there will be increasing demand for Video on Demand (VoD) on the Internet in the near future. However, because of the best-effort characteristics of the Internet it is important to suppress the degradation of communication quality caused by packet dropping when Internet traffic is congested. This paper focuses on MPEG [1], [2] transmission over the Internet, and suitable control mechanisms are established for an acceptable Quality of Service (QoS) improvement through detailed evaluation. Packets are classified using a frame-based scheme. The server applies the proposed End-to-End control scheme and shuffles the order of packets to avoid burst dropping, and may omit selected packets belonging to certain frames prior to forwarding. At the intermediate routers, transferred packets are transmitted according to Round Robin (RR) or Weighted Round Robin (WRR) scheduling, and are dropped statistically using selective Random Early Detection (RED) corresponding to frame attributes when there is congestion. We evaluate the proposed performance of transmission method using both computer simulations and empirical measurements of picture quality. The results show that when the traffic volume cannot be estimated in the intermediate routers, the combined use of RR, shuffling and conditional RED is effective, and when the traffic volume can be estimated, the combination of WRR, rate control and RED is effective.
- 社団法人電子情報通信学会の論文
- 2002-05-01
著者
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Tode Hideki
Department Of Computer Sciences And Intelligent Systems Graduate School Of Engineering Osaka Prefect
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Tode Hideki
The Department Of Information Systems Engineering Graduate School Of Engineering Osaka University
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Murakami Koso
The Department Of Information Systems Engineering Graduate School Of Engineering Osaka University
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Murakami Koso
Department Of Information Networking Graduate School Of Information Science And Technology Osaka Uni
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TAKAHASHI Jun
The Department of Information Systems Engineering, Graduated School of Engineering, Osaka University
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Takahashi Jun
Department Of Information Networking Graduate School Of Information Science And Technology Osaka Uni
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