基于备份节点无线传感器网络设计策略

在无线传感器网络中由于节点的规模大小有限，能源问题成为目前设计的重点。根据网络中节点的不同任务特征提出了一个对传感器节点进行备份的分布式算法，使得在网络中尽可能减少工作节点的参与从而降低能耗。实验结果证明了算法的可行性和正确性，同时还给出了在特定环境下为达到网络最大持续工作时间所需节点数量的范围区间。

Design Strategy in Wireless Sensor Networks Based on Backup Nodes

Since the limited size of sensor node, energy-aware is the most important issue in designing wireless sensor networks. In terms of the role assignment of node, a distributed algorithm based on backup nodes was proposed. This algorithm can decrease the whole energy con- sumption by maintaining minimal number of active nodes in the sensing role. Simulation results verify the feasibility and correction of our algorithm. At the same time, in order to achieve the maximal network lifetime, the optimal numbers of the sensor nodes were provided.