Congestion Control Based on Queuing Delay and Packet Loss Probability
Xie Jun① Yu Lu② Jin Feng-lin①
①(Institute of Command Automation, PLA University of Science and Technology, Nanjing 210007, China) ②(Institute of Communications Engineering, PLA University of Science and Technology, Nanjing 210007, China)
Abstract：As a congestion measure, queuing delay has many advantages. But packet loss can not be completely avoided if only queuing delay is used as a congestion measure. When the buffer is not large enough and some packets are dropped, queuing delay can not accurately reflect network congestion. In this paper, a congestion control model is proposed based on queuing delay and packet loss rate, in which dual-mode control is used. When the buffer is large enough, queuing delay is used as a congestion measure, the model achieves stable dynamic properties and weighted proportional fairness among heterogeneous flows. When the buffer is not large enough and packet loss is inevitable, packet loss rate is used as a congestion measure, and the model maintains almost the same performance as when there is no packet loss. The model is stable as it switches between the two modes and the transition is smooth.
谢钧, 俞璐, 金凤林. 基于排队时延和丢包率的拥塞控制[J]. 电子与信息学报, 2010, 32(9): 2058-2064.
Xie Jun, Yu Lu, Jin Feng-Lin. Congestion Control Based on Queuing Delay and Packet Loss Probability. , 2010, 32(9): 2058-2064.
2010, Vol. 32 
