Admission control with elastic QoS for video on demand systems

Authors:
Fu-Shou Lin;Bao-Qun Yin;Jing Huang;Xu-Min Wu
Affiliations:
Key Lab of Anhui Network Communication System and Control, University of Science and Technology of China, Hefei, China 230027;Key Lab of Anhui Network Communication System and Control, University of Science and Technology of China, Hefei, China 230027 and National Network New Media Engineering Research Center, Institute ...;Key Lab of Anhui Network Communication System and Control, University of Science and Technology of China, Hefei, China 230027;Key Lab of Anhui Network Communication System and Control, University of Science and Technology of China, Hefei, China 230027
Venue:
International Journal of Automation and Computing
Year:
2012

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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.