7 January 2003 Providing QoS Guarantees in Video Servers with VBR Multi-resolution Video
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A video server may need to reserve resources in order to meet the Quality of Service (QoS) requirements of the various clients that it services. We present an admission control strategy that provides deterministic admission to the minimum or necessary layers and statistical admission to the higher layers of a client video stream accessing variable bit-rate multi-resolution video. An efficient data placement scheme called Partial-Bundled is proposed and compared with other data placement strategies. In the event of a node failure, the load on the failed node is distributed across the functional nodes. Therefore, the load on each node is increased by a fraction depending on the data replication scheme used, and it may be necessary to degrade the resolutions of the streams. Two heuristic algorithms to provide for graceful degradation in the presence of disk failure are described. The heuristic algorithms attempt to maximize the rewards (related to average quality of a stream) while reducing the resolution of clients.
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Radhika S. Grover, Radhika S. Grover, Qiang Li, Qiang Li, "Providing QoS Guarantees in Video Servers with VBR Multi-resolution Video", Proc. SPIE 5019, Multimedia Computing and Networking 2003, (7 January 2003); doi: 10.1117/12.483913; https://doi.org/10.1117/12.483913

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