Abstract: Congestion is an essential problem in wireless sensor networks.In view of resolving the problem of congestion，an optimization rate-based congestion control algorithm is proposed，which builds a distributed network framework，and detects congestion using occupied buffer.In addition，the algorithm keeps the network throughput steady using rate regulation strategy based on optimization theory，and achieves utility of the cluster node maximization by optimal solution.Simulation results show that the proposed algorithm not only alleviates the congestion effectively and reduces the average per-hop delay，but also brings better fairness of network transmission.

摘要： 拥塞控制是无线传感器网络中的一个关键性问题。从解决拥塞问题出发，提出了一个基于优化速率的拥塞控制算法ORCC。算法构建了一个分布式的分簇网络结构，利用缓冲的占用情况进行拥塞检测，并使用基于优化理论的速率调节策略来保证网络吞吐量的稳定，从而通过求解出的最优解来实现簇内节点效用的最大化。仿真实验表明，ORCC算法不仅能有效缓解网络拥塞，降低平均延迟，还具有较好的网络传输公平性。