网络可用带宽测量算法IGI的实现和改进  

Implementation and Improvement on the IGI Measurement Algorithm of Network Available Bandwidth

作　　者：刘星成[1] 莫其明 

机构地区：[1]中山大学电子与通信工程系

出　　处：《小型微型计算机系统》2006年第3期432-436,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(90304011)资助;广东省自然科学基金项目(04009739)资助;东南大学移动通信国家重点实验室开放基金(A0403)资助.

摘　　要：详细讨论了IGI可用带宽测量算法及其实现,并针对该算法的缺点提出了改进的可用带宽测量算法.通过大量的网络测量试验并与MRTG测量结果比较后发现,改进的可用带宽测量算法能快速测量网络的可用带宽,测量准确性更高,稳定性有很大改善,能快速反映可用带宽的变化,增强了跟踪带宽变化的能力.This paper discussed in detail the IGI measurement algorithm and its implementation with C/C＋＋. After analyzing the deficiency of this algorithm, a modified available bandwidth measurement algorithm was proposed. Through a huge number of network experiments it was found that the proposed algorithm of measurement could get measurement results more promptly, give more accurate estimation to network bandwidth, and yield more steady results. Furthermore, the proposed algorithm tends to be capable of rapidly reflecting changes of bandwidth and so improves the capability of tracing bandwidth changes.

关 键 词：可用带宽 瓶颈带宽 包对 带宽测量 主动探测 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]