区分服务中基于实时带宽估计的TCP友好标记器

为了解决区分服务（DiffServ）中带宽分配的公平性问题，利用内部带宽评估机制提出了一种新的TCP友好标记算法。实时跟踪网络中剩余带宽的动态变化，将剩余带宽按比例在各个汇聚流之间公平分配，并以此为依据对数据包进行标记。将敏感的TCP流和非敏感的UDP流分开进行标记，并对抢占的UDP流采取更为严厉的惩罚措施。仿真实验结果表明，在解决汇聚流内部单流之间带宽分配，以及汇聚流之间对网络剩余带宽分配问题上，与同类标记器相比，该标记器具有更好的公平性，且更容易实现。

Real-time bandwidth estimation based TCP-friendly marker in DiffServ

In order to solve the unfairness problems of bandwidth allocation in DiffServ(differentiated services),a new TCP-friendly marker was proposed and realized by building an inherent bandwidth estimation mechanism.This marker dynamically estimates the available bandwidth in the network and reallocates it(again) among the aggregates proportionally to their target rate,and TCP-friendly traffic and UDP-like traffic are marked separately.To punish the non-sensitive data packet more drastically,it is even directly dropped when marked.Simulation results indicate that compared to the same kind of markers for different network scenarios,the TCP-friendly marker performs better in providing fairness and link utilization,and is easier to implement.