一种适用于多速率VBR业务系统的呼叫接纳控制策略  

A Call Admission Control Strategy for Systems with Multi-rate VBR Services

作　　者：黄生叶[1] 熊勤平[1] 蒋红艳[1] 

机构地区：[1]湖南大学计算机与通信学院,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2008年第10期75-79,共5页Journal of Hunan University:Natural Sciences

基　　金：湖南省自然科学基金资助项目(06JJ20030)

摘　　要：提出一种可用于支持多种实时可变比特率业务的综合业务系统的呼叫接纳控制策略.该策略只需一个可动态调整的控制参数——容量缩放因子,并根据容量缩放因子与物理容量之积、各类业务的在线连接数和呼叫请求的类型决定是否接纳一个呼叫.给出了呼叫损失概率、分组丢失率的计算方法及容量缩放因子的求解方法.数值计算结果表明所提出的策略有利于提高系统的吞吐量.A call admission control strategy for the integrated services system providing multi-rate real-time VBR services was proposed. Only one dynamically tunable control parameter called the capacity scaling factor was needed in the strategy. Whether to admit a call or not depends on such factors as the product of the physical capacity multiplied by the capacity scaling factor, the numbers of online connections of each type of service, and the type of the requesting call. Methods of evaluating the call blocking probabilities, cell loss probability and the capacity scaling factor were presented. Numerical results have shown that the new strategy is effctive in improving the throughput.

关 键 词：综合业务网 可变比特率 呼叫接纳控制 服务质量 

分 类 号：TN915.01[电子电信—通信与信息系统]