In view of the traditional TCP control protocol used in the limitations of heterogeneous network

the congestion window optimization TCP control strategy is proposed. The control strategy carries the logarithmic function to dynamically adjust the congestion windows changes in congestion avoidance phase. when the transmitting terminal receives 3 times of repetitive ACK or timeout in a row

adjust the congestion window reasonably according to the current network bandwidth.Simulation results show that the control strategy increases the throughput and improves the network performance compared with the traditional TCP control strategy in different network environment.