基于DiffServ协议中带宽分配的公平性

对DiffServ体系协议中的几种聚集流内各微流之间带宽 分配的公平性进行了分析， 并分析了几种典型的公平性的控制算法（RED，WRR，FQ）的思想、 实现方法、 技术以及各自算法存在的问题， 在此基础上， 提出一种基于WRR算法和FQ算法相结合的新的公平性控制算法， 较好地解决了聚集流在网络发生拥塞时， 聚集流内各微流的公平性问题. 从而保证了在IP广域网乃至整个nternet上实现QoS， 同时对网络中带宽资源的合理分配有一定的指导作用.

Fairness of Bandwidth Allocation Based on DiffServ Agreement

The fairness of the band allocation is analyzed for each tiny stream in several aggregate streams in DiffServ system agreement, i.e., several typical control algorithms serving fairness (RED, WRR, FQ) are chiefly analyzed, including these algorithms’ ideas, realization methods, techniques and their own defects, and a new algorithm serving fairness is brought forward, based on combining the WRR algorithm with the FQ algorithm. The new algorithm better solves the problem of the fairness of each tiny stream in an aggregate stream when the network is congested. Its purpose is to realize the QoS guarantees in the IP wide area network, even the whole Internet. It gives some guidance for reasonably allocating the band resource in the network.