摘要：A new congestion control method is proposed in this paper. It makes use of the combination of buffer queue length and its variation rate to estimate the degree of congestion. It divides the node states and adopts various bandwidth allocation strategies according to different states, which ensures the reliable transmission of emergent information. Firstly, this paper introduces the queue model with priorities, divides the services according to different data flows and makes a detailed introduction on congestion adjustment mechanism based on the above information. The simulation experiment shows that the congestion control mechanism in this paper can ensure the reliable transmission of emergency information in monitoring sensor networks
