基于缓存的双动态无线接入算法  

A Dual Dynamic Call Admission Control Algorithm Based on Call Buffer in Wireless Networks

作　　者：付立[1] 张宏科[1] 霍炎[1] 冯玉珉[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《北京交通大学学报》2008年第2期63-66,93,共5页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金资助项目(60173001)

摘　　要：提出了一种新的无线网络中的可用于实时及非实时业务的呼叫接纳控制算法(DDT-Q算法),通过动态调节双门限的阈值,并对溢出的非实时业务进行缓存,同时为兼顾非实时业务的VBR特性而采用了动态调节分配带宽的方法.大量的分析及仿真实验的结果均表明,该算法能够同时满足给定的实时及非实时业务服务质量要求,并使系统整体资源利用率达到最大.In this paper, we proposed a new call admission control scheme called Dual Dynamic Threshold access scheme with Queuing for VBR （DDT-Q）. By dynamically adjusting the value of both thresholds, the system resource utilization can be improved with a better overall system award. The algorithm gives attention to the VBR character of data traffic and can adapt its service bandwidth through different thresholds and the call buffer size. Both analysis and simulation results indicate that our scheme is capable of satisfying the given Quality of Service （QoS） requirements for realtime and none realtime traffic while achieving the maximum utility.

关 键 词：无线多媒体网络 呼叫接纳控制 动态门限 可变速率 

分 类 号：TN919.3[电子电信—通信与信息系统]