关键词: 拥塞控制，主动队列管理(AQM) ,稳定裕度，大时滞网络，流媒体

Abstract: With the increase of the streaming media applications in the Internet, streaming media traffic on the Internet is growing rapidly. Streaming media traffic is transmitted by UDP protocol since it has delay-sensitive and loss-tolerant characteristics. However, the existing active queue management algorithm based on TCP long flows is lack of the ability to fight against UDP traffic interference. In the paper, an active ctueue management algorithm ISE-GPM-PID was designed with least square error integral based on PID using I}CP/AQM model. In addition, the algorithm ISE-GPM-PID has the phase margin between 300 to 600 and the amplitude margin between 2 to 5. I}he ISE-GPM-PID is able to fight against UDP traffic interference and adapts to the Internet streaming media and Web applications. At the same time, the algorithm also has fast response time, small computing cost and good robustness, and can be used in large delay network envmonment.

Key words: Congestion control, Active queue management (AQM) , Stability margin, Large delay network, Stream media