关键词: 拥塞控制 主动队列管理 PI控制器 控制理论

Abstract:

The mechanism of active queue management （AQM） is proposed to improve the traditional end-to-end congestion control in the Internet. But most AQM al  gorithms are designed intuitively, and appropriate theoretical analysis is needeck Some AQM algorithms, such as REM and PI, explore this aspect. The per  formance of REM is verified and compared with that of PI using NS simulations. The results show that REM and PI have similar properties. This paper expl  ains this by control theory and provide further directions.

Key words: （congestion control, active queue management, PI controller, control theory）