一种改进的自适应动态资源调配算法  

An Enhanced Adaptive Dynamic Resource Allocation Algorithm

作　　者：周汀汀[1] 糜正琨[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《南京邮电大学学报（自然科学版）》2008年第5期20-23,共4页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：国家自然科学基金(60472105);江苏省博士点基金(02省10)资助项目

摘　　要：为了改进在分布式环境下用于QoS控制的基于模糊逻辑的动态资源调配算法(FDRA),提出了基于双阈值和双指针的自适应动态控制资源算法——EFDRA(Enhanced FDRA),解决了当网络资源紧张时,FDRA算法更新指数上升过大的问题。仿真结果证明,该算法以牺牲少量的阻塞率指标为代价,换来了更新指数指标的显著改善,提高了网络的可扩展性能。Although the algorithm of fuzzy-logic based distributed dynamic resource allocation （FDRA） demonstrates a good performance, it has the problem of updating rate increase when the network is short of resources. To overcome this problem, an enhanced adaptive dynamic resource allocation algorithm, enhanced FDRA （EFDRA）, is proposed based on the idea of dual-threshold and dual-pointer. Simulation result and analysis are presented. They show that the proposed algorithm substantially reduces the updating rate at the cost of very little higher block rate, and enhances network scalability.

关 键 词：IP服务质量 多协议标签交换 双阈值 双指针 更新指数 

分 类 号：TP393.03[自动化与计算机技术—计算机应用技术]