| 一种面向WiMAX的呼叫接纳控制算法 |
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| 引用本文： | 张青波,何加铭. 一种面向WiMAX的呼叫接纳控制算法[J]. 电子技术应用, 2010, 0(9) |
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| 作者姓名： | 张青波 何加铭 |
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| 作者单位： | 浙江工商职业技术学院,浙江,宁波,315012;宁波大学,浙江,宁波,315211;宁波大学,浙江,宁波,315211 |
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| 基金项目： | 科技部国际合作与交流专项,国家自然科学基金,宁波市工业攻关国际合作项目 |
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| 摘 要： | 提出一种在WiMAX系统资源紧张时,使接纳率和资源利用率最大化的呼叫接纳控制CAC(Call Admission Control)算法。算法基于经济学概念,利用基尼系数(Gini Coefficient)给出了接纳控制模型,并用修正的sigmoid函数计算接纳概率。根据接纳概率决定是否接纳新到业务。仿真结果表明,算法与典型的截止优先权算法相比,在系统繁忙时系统接纳率和资源利用率都有较大提高。
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| 关 键 词： | WiMAX 呼叫接纳控制 基尼系数 接纳概率 |
A call admission control algorithm for WiMAX |
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| ZHANG Qing Bo,HE Jia Ming. A call admission control algorithm for WiMAX[J]. Application of Electronic Technique, 2010, 0(9) |
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| Authors: | ZHANG Qing Bo HE Jia Ming |
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| Abstract: | A CAC(Call Admission Control) algorithm is proposed with maximizing the system's admission rate and resource utilization when WiMAX system is busy.Firstly,admission control model is presented using Gini coefficient based on economic concepts.Then,the algorithm calculates admission probability using modified sigmoid function.Finally,according to the admission probability,the system decides whether to accept new business.Simulation results show that:compared with the typical cut-off priority algorithm,the admission rate and resource utilization are greatly enhanced in new algorithm when the system is busy. |
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| Keywords: | WiMAX CAC Gini coefficient admission probability |
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