基于模糊逻辑的视频服务器接纳控制  

Fuzzy Logic Based Admission Control on Video Servers

作　　者：戚伟世[1] 蔡安妮[1] 孙景鳌[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《计算机科学》2005年第4期178-180,共3页Computer Science

摘　　要：提出一种新的基于模糊逻辑的VBR视频流接纳控制算法。该算法通过对调度周期的在线调整,使得系统所剩的磁盘I/O带宽和缓存空间达到一种等量的动态平衡,从而大大提高了系统资源的综合利用率。仿真结果表明,该算法下的接纳率比最优固定周期算法下的接纳率提高了约25％;同时,也比前人提出的动态调度周期算法的接纳率提高8％,并且算法的可行性也得到明显增强。A novel fuzzy logic based admission control algorithm on VBR videos is proposed. By the on-line adjust- ment of scheduling period, residual system resources such as disk I/O bandwidth and buffer space are in a dynamic balance state, which enhances greatly the integrated utilization of system resources. The result of simulation shows the algorithm can increase admission rate by about 30% than that of optimal fixed period algorithm. The algorithm al- so can increase admission rate by 8% than that of former algorithm with dynamic scheduling period, and its availabili- ty is strengthened obviously.

关 键 词：模糊逻辑 视频服务器 接纳控制算法 VBR视频流 磁盘I/O 综合利用率 在线调整 动态平衡 缓存空间 系统资源 仿真结果 动态调度 周期 带宽和 最优 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程] TN948.12[自动化与计算机技术—控制科学与工程]