具有通信时延的无线传感器网络拥塞控制算法  

Congestion Control Algorithm over Wireless Sensor Network with Delay

作　　者：侯萍[1,2] 王执铨[1] 

机构地区：[1]南京理工大学自动化学院,江苏南京210094 [2]南京人口管理干部学院,江苏南京210042

出　　处：《信息与控制》2011年第5期652-657,共6页Information and Control

摘　　要：针对具有通信时延的无线传感器网络的拥塞问题,利用图论对无线传感器网络进行建模,借鉴领导者—跟随者的思想设计了一致拥塞控制算法(congestion control based on consensus,CCBC).根据汇聚节点的负载状况,合理地调节所有传感器节点的数据发送速率,给出足够的条件证明算法在变拓扑网络结构和时变时延下的有效性.NS仿真表明,本文提出的算法与其他算法比较,具有较低的丢包率、较高的链路利用率、良好的节能性,能够很好地抑制无线传感器网络中的拥塞现象.For the congestion problems of wireless sensor network（WSN） with communication delays,the graph theory is used to model the wireless sensor network,and a congestion control algorithm based on consensus（CCBC） is designed based on idea of leader-follower.According to the load status of the sink node,data transmission rates of all sensor nodes are adjusted reasonably.Sufficient conditions are given to prove the validity of the proposed algorithm under the varying network topology and time-varying delay.NS simulation results indicate that the CCBC achieves lower drop rate,higher link usage and good energy saving property comparing with other algorithms,and restrains the congestion in wireless sensor network.

关 键 词：无线传感器网络 网络拥塞控制 领导者—跟随者 时变时延 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]