Abstract: In order to solve the problems of high packet loss rate, long link delay and low utilization in traditional wired hybrid network, a method of congestion optimization is proposed. Based on the detection results of one-way delay and available bandwidth, Markov model is used to predict the congestion status of wired hybrid network transmission, which takes resource consumption and link utilization as the target of optimization control. When the path of optimal control of the target meets the requirements, the congestion optimization control of data transmission of wired hybrid network is completed. The experimental results show that the packet loss rate of the proposed method is within 4% , the link delay is controlled within 0. 05 s, and the packet loss rate is low, the link delay is short and the link utilization is high.

Key words: wired hybrid network; , data transmission; , network state prediction; , congestion optimization contro