A novel dynamic call admission control policy for wireless network  

作　　者：黄国盛 陈志刚 李庆华 赵明 郭真 

机构地区：[1]School of Information Science and Engineering,Central South University [2]College of Physics Science and Information Eng ineering,Jishou University

出　　处：《Journal of Central South University》2010年第1期110-116,共7页中南大学学报（英文版）

基　　金：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

摘　　要：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%.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%.

关 键 词：wireless network call admission control quality of service Markov decision process 

分 类 号：TN929.5[电子电信—通信与信息系统]