一种新的自适应RED算法

A New Adaptive RED Algorithm

主动队列管理算法(RED)存在很多问题,如参数难以配置、对负载变化敏感等,为此采用控制理论的方法改进RED算法,提出一种基于比例控制的自适应RED算法,PRED。仿真结果表明该算法的稳定性好,队列的稳态值不受负载变化的影响。与已有的几种主动队列管理算法的性能比较表明,PRED算法的性能明显优于ARED,PI控制,DRED,SRED和REM几种算法。

RED is a famous active queue management algorithm, and it is the active queue management algorithm recommended by IETF. Howerver, RED has many problems. For instence, its parameter settings is difficult, and its performance is sensitive to load. The control theory is nsed to improve RED, and based on proportional control, we propose an adaptive RED named as PRED is proposed. The simulation results show that its stability is good, and the steady-state value of queue does not affect by load. The performance comparisons with some active queue management algorithms show that the performance of PRED is obviously better than that of ARED, PI Controller, DRED, SRED and REM etc.