基于BFC模型的ATM网络拥塞控制器的设计

为充分提高ATM网络性能，设计一个高效的拥塞控制系统是关键。自适应比特(ABR)业务的流量控制正是ATM网络中一种有效的拥塞控制机制和流量管理手段。在二进制ABR流反馈控制方案中，信元速率和队列的大幅度振荡降低了链路利用率，但它的简洁性对设计高性能交换机又极具吸引力。为此，该文基于流体理论给出了二进制反馈控制的分析模型，并基于该模型。提出了传统PID和智能拥塞控制器的设计方案。然后，该文在相同条件下对两类控制方法进行了仿真，并比较分析了他们的优缺点。最后，该文提出了拥塞控制器的改进方法及下一步研究的课题和思路。

Controller Design for Congestion Control in ATM Network Based on BFC Model

Design of an effective congestion control scheme iscritical t othe enhancement of ATM networksperformance.Available Bit Rate(ABR)flow contro l just isan effective mea-sure in ATM networkscongestion control and traffic measure.The Simplicity of binary feedback control scheme based on ABR flow isat tractive tohigh performance switch design.In thispa-per,the model of the bina ry ABR flow control isdeduced based on fluid flow theory and twodesign schemes of controllersare put forward.At the same time,the simulation resultsunder th e same conditionsare given and the performance characteristicsof them are disc ussed in thispaper.At the end,the ideasof con-ductingthe next researchesare proposed and they are believed tobe of great research value.