Abstract: This paper uses topology to study load balance of wireless sensor networks when sensors are deployed in large scale area randomly. Through the statistical analysis of the number of neighbor nodes of wireless sensor network to study the influence of data flow load balance, the number of neighbor node follows approximately normal distribution when sensors are deployed in large scale area randomly. Its origin lies in the edge effect. Simulation results show that the increase of node communication radius is more difficult to load balance than the increase of deployment density.

Key words: wireless sensor networks, load balance, deploy randomly, neighbor node

摘要： 从结构的角度来研究在大规模随机部署时所形成的无线传感器网络的数据流负载平衡。通过统计分析邻居节点数目来分析其对无线传感器网络的数据流负载平衡的影响，发现在大规模随机部署时节点的邻居节点数目近似服从正态分布，其成因在于边缘效应。仿真实验发现节点通信半径的增大比部署密度的增大更不利于负载平衡。

关键词: 无线传感器网络, 负载平衡, 随机部署, 邻居节点