基于云模型的无线传感器网络拥塞及速率控制策略

针对无线传感器网络拥塞带来的网络丢包、能量损耗等问题,提出了一种基于云模型的无线传感器网络拥塞及速率控制策略。节点周期性地计算本地队列拥塞度,利用云模型的模糊随机性控制速率调节因子来决策节点输入速率,再通过公平性策略进行上游节点及本地速率分配。仿真实验结果表明,本文的拥塞及速率控制机制具有良好的公平性和节能性,能够有效缓解网络拥塞,降低网络丢包率,延长网络寿命。

Congestion and Rate Control Strategy Based on Cloud Model in Wireless Sensor Networks

Aiming at the problem of packets loss and energy cost because of wireless sensor networks congestion,a congestion and rate control strategy based on cloud model in wireless sensor networks is proposed.Node periodically samples its queue congestion state,decides node's incoming rate with rate adjustment coefficient which is controlled by cloud model's fuzziness and stochastic,upstream nodes' rate assignment,including local rate,is implemented by fairness strategy.The simulation results show that the proposed...