网络可用带宽测量算法的改进  

Improved measurement algorithm of network available bandwidth

作　　者：陈锐[1] 蔡勇[1] 

机构地区：[1]江南大学信息工程学院,江苏无锡214122

出　　处：《计算机工程与设计》2009年第7期1622-1624,共3页Computer Engineering and Design

摘　　要：重点研究了网络端到端可用带宽的测量方法,对现有的基于自拥塞理论的可用带宽的测量方法Pathload进行了简要分析。针对该方法的缺点提出了改进的可用带宽测量算法,改进的可用带宽测量算法采用周期流组到达目的端的速率代替周期流的发送速率,能快速测量网络的可用带宽,测量准确性更高,降低了测量开销。NS-2上的模拟实验结果表明,该方法是可行的和有效的。Intemet end-to-end available bandwidth measure is mainly researched, and the existing end-to-end available bandwidth measure based on self-congestion is analyzed briefly. After analyzing the deficiency of this algorithm, a modified available bandwidth measurement algorithm is proposed, adopting destination end velocity of the cycle stream replacing the velocity of cycle stream, it is found that the proposed algorithm of measurement could measure the network available bandwidth more promptly and exactly, also the overhead of measurement is reduced. The results of simulation on NS-2 show the method is valid and efficient.

关 键 词：带宽 可用带宽 主动测量 自拥塞 NS2 

分 类 号：TP393.06[自动化与计算机技术—计算机应用技术]