环形无线网络呼叫接入控制模型研究  

Study on call admission control model of ring wireless networks

作　　者：刘足江[1] 刘云[1] 

机构地区：[1]昆明理工大学信息工程与自动化学院,云南昆明650051

出　　处：《郑州轻工业学院学报（自然科学版）》2012年第6期97-100,共4页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：国家自然科学基金项目(NSFC10502050)

摘　　要：针对正交频分复用的无线网络中,当用户靠近基站覆盖区域的边缘且需切换通话时,传统排队模型切换失败率较高的问题,提出了在基站覆盖区域里建立一个多环呼叫接入控制模型的方案:将蜂窝设置在同心圆中,通过从所需的资源量中建立移动用户的信元平衡方程来降低切换失败率.仿真结果表明,该模型可降低切换失败率,提高资源利用率.In the orthogonal frequency division multiplexing wireless network （0FDM）, when the user close to the edge of the base station coverage area, if you want to switch the call, the traditional queuing models switching have a higher failure rate. A new call admission control model based on the ring was established in a coverage area with cover of the base station, cellular will set in concentric circles, though the amount of resources required to establish the cell balance equation of the mobile users, to reduce switch failure rate. The simulation results showed that the model reduces switch failure rate in the protection channel, and im- proves resource utilization.

关 键 词：呼叫接入控制 排队模型 信元平衡方程 环形无线网络 

分 类 号：TN929.5[电子电信—通信与信息系统]