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中文摘要：
针对无线传感器网络的拥塞问题,设计了一种基于最小速率的拥塞控制算法.利用分布式动态系统的理论对拥塞问题进行了建模,并证明了该算法能够保证所有节点的发送速率收敛到可用的最小带宽.利用李亚普诺夫函数证明了算法在变拓扑网络结构下的有效性.NS仿真结果表明,这种最小速率算法能够很好地抑制无线传感器网络中的拥塞现象,保证了较高的吞吐量和较低的网络延时,提高了整个网络的服务质量.
英文摘要：
The congestion control algorithm based on min-rate is designed for network congestion in wireless sensor network.The congestion problem is modeled by the theory of distributed dynamic system,and it can be proved that the send rate for all nodes converges to the minimal available bandwidth by the proposed min-rate（MR） algorithm.Via Lyapunov function,the validity of the proposed algorithm is shown under the variable network topology.NS simulation results indicate that the MR algorithm restrains the congestion in wireless sensor network,maintains high throughput and low delay time, also improves the quality of service for the whole network.
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