能量优先的无线传感器网络拥塞缓解机制  

Priority of energy congestion relief scheme in wireless sensors networks

作　　者：蒋禧[1] 齐建东[1] 曹永洁[1] 赵燕东[2] 

机构地区：[1]北京林业大学信息学院,北京100083 [2]北京林业大学工学院,北京100083

出　　处：《计算机工程与设计》2011年第2期416-419,423,共5页Computer Engineering and Design

基　　金：林业公益性行业科研专项基金项目(200704040);中央高校基本科研业务费专项基金项目

摘　　要：为适应无线传感器网络大数据量传输的需求,提出一种基于能量优先的拥塞缓解机制(PECR)。根据网络对整体能耗的要求,将节点剩余能量作为一项重要参考指标。节点周期性地检测缓冲区队列占用率来确定当前拥塞度,当拥塞发生时,节点依据拥塞度和剩余能量两项属性,尝试在拥塞节点周围建立临时最佳路径进行分流调节。实验结果表明,采用该机制时,在有节点冗余的网络区域内,可降低节点能耗,提高网络整体生存寿命。To adapt the need of large data transportation in wireless sensors networks, a scheme of priority of energy congestion relief （PECR） is presented. The residual energy of nodes has been an important indicator according to the requirement of whole energy cost in network. Nodes detect the occupancy rate of the buffer queue periodically to determine the current degree of congestion, when the congestion occurs, the node would try to coordinate by building the best path for the temporary shunt regulator around itself, based on the congestion degree and the residual energy. As the simulation results show, once the scheme is adopted, the energy consumption of nodes reduces in the region where numbers of nodes exist, and the lifetime of the entire network improves.

关 键 词：无线传感器网络 能量优先 拥塞缓解 分流调节 OMNET++仿真 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]