Admission control with elastic QoS for video on demand systems |
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Authors: | Fu-Shou Lin Bao-Qun Yin Jing Huang Xu-Min Wu |
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Affiliation: | 1. Key Lab of Anhui Network Communication System and Control, University of Science and Technology of China, Hefei, 230027, China 2. National Network New Media Engineering Research Center, Institute of Acoustics, Chinese Academy of Science, Beijing, 100190, China
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Abstract: | In network service systems, satisfying quality of service (QoS) is one of the main objectives. Admission control and resource allocation strategy can be used to guarantee the QoS requirement. Based on partially observable Markov decision processes (POMDPs), this paper proposes a novel admission control model for video on demand (VOD) service systems with elastic QoS. Elastic QoS is also considered in resource allocation strategy. Policy gradient algorithm is often available to find the solution of POMDP problems, with a satisfactory convergence rate. Through numerical examples, it can be shown that the proposed admission control strategy has better performance than complete admission control strategy. |
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Keywords: | Partially observable Markov decision processes (POMDPs admission control resource allocation elastic quality of service (QoS policy gradient |
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