The IETF has addressed the congestion control by advocating the deployment of active queue management mechanisms

such as RED

in the network.But RED has some problems

such as the average queue length changes slowly when congestion starts and ends.To alleviate this problem

we propose a dynamic-weight tune RED which can quickly be conscious of the congestion and dynamically tune the weight.Dynamic-Weight RED can alleviate the congestion and drop when the congestion is over.The time of congestion is shorter than the RED.