提出一种自适应的拥塞缓解机制。当无线传感器网络发生拥塞时,尝试在拥塞节点附近建立新路径,路径建立失败时引入公平汇聚机制,按汇聚数据流权重大小比例限制上游节点速率以减少源节点数据发送率。仿真实验表明,该机制减少了能耗,降低了丢包率,使重要的数据能实时、公平地传送到目的节点。 An adaptive congestion mitigation mechanism is proposed. When congestion occurs in WSN, try to set up a new path near the congested nodes. When path establishment fails, a fair convergence mechanism is introduced to limit the upstream node rate according to the weight of the aggregated data stream to reduce the sending rate of the source node. Simulation results show that this mechanism reduces the energy consumption and reduces the packet loss rate, so that the important data can be transmitted to the destination node in real time and in fair manner.