| 移动网络中一种呼叫接入控制方案及分析 |
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| 引用本文： | 张欣,卢军. 移动网络中一种呼叫接入控制方案及分析[J]. 电子科技大学学报(社会科学版), 2005, 0(1) |
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| 作者姓名： | 张欣 卢军 |
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| 作者单位： | 信息产业部武汉邮电科学研究院 武汉430074(张欣)，信息产业部武汉邮电科学研究院 武汉430074(卢军) |
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| 摘 要： | 提出了一种可变预留信道数方案,该方案计算在不同呼叫到达率下能达到最佳服务等级的预留信道数,将实时呼叫到达率反馈到系统中,呼叫接入控制针对不同的呼叫到达率设置不同的预留信道数,在新呼叫阻塞率和切换呼叫掉话率之间寻求平衡,以期达到最佳服务等级。通过对不同呼叫接入控制机制的仿真,验证了新的呼叫接入控制机制的优点。
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| 关 键 词： | 移动通信 呼叫接入控制 服务质量 服务等级 |
A New Call Admission Control Scheme in Mobile Networks and Its Performance Analysis |
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| ZHANG Xin,LU Jun. A New Call Admission Control Scheme in Mobile Networks and Its Performance Analysis[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2005, 0(1) |
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| Authors: | ZHANG Xin LU Jun |
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| Affiliation: | Wuhan Research Institute of Post and Telecommunications Wuhan 430074 |
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| Abstract: | In this article, we suggest a new call admission control (CAC) scheme based on guard channel scheme. Guard channels are set dynamically. Each cellular calculates the current call arrival rate. The call counter feeds the ratio back to the CAC system. Then the CAC system sets the guard channel number by the ratio. This scheme helps to balance the new call blocking probability and handover call blocking probability as different call arrival rate sets different guard channels. A performance comparison using simulation results between the new dynamically set guard channel scheme and the traditional guard channel scheme suggests considerable improvement from the new scheme. |
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| Keywords: | mobile communication call admission control quality of service grade of service |
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