Abstract
To address the issue of resource scarcity in wireless communication, a novel dynamic call admission control scheme for wireless mobile network was proposed. The scheme established a reward computing model of call admission of wireless cell based on Markov decision process, dynamically optimized call admission process according to the principle of maximizing the average system rewards. Extensive simulations were conducted to examine the performance of the model by comparing with other policies in terms of new call blocking probability, handoff call dropping probability and resource utilization rate. Experimental results show that the proposed scheme can achieve better adaptability to changes in traffic conditions than existing protocols. Under high call traffic load, handoff call dropping probability and new call blocking probability can be reduced by about 8%, and resource utilization rate can be improved by 2%–6%. The proposed scheme can achieve high source utilization rate of about 85%.
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Foundation item: Project(60873082) supported by the National Natural Science Foundation of China; Project(09C794) supported by the Natural Science Foundation of Education Department of Hunan Province, China; Project (S2008FJ3078) supported by the Science and Technology Program Foundation of Hunan Province, China; Project(07JJ6109) supported by the Natural Science Foundation of Hunan Province, China
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Huang, Gs., Chen, Zg., Li, Qh. et al. A novel dynamic call admission control policy for wireless network. J. Cent. South Univ. Technol. 17, 110–116 (2010). https://doi.org/10.1007/s11771-010-0018-2
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DOI: https://doi.org/10.1007/s11771-010-0018-2