摘要
针对无线传感器网络中时间同步技术,降低同步误差的问题,通过优化生成树模型的结构,利用协作同步时间同步技术与生成树生成过程结合,降低生成树的深度,解决同步中误差累积,减少了时间同步误差。通过模拟实验证明,节点经过优化后的同步误差累积低于未优化节点。本方案适合对常用的时间同步算法的优化。
The way to reduce the time synchronization(TS)error between crunodes has been a hot issue in research of TS technology in wireless sensor network.In this research,we solve the problem of error accumulation when sending TS message by optimizing the structure of spanning tree established during TS.Combination of collaboration TS scheme and spanning tree(ST)can reduce the deepth of ST and decrease TS errors.Simulation experiments show that synchronization error accumulation of optimized node is less than that of non-optimized node.
出处
《太原理工大学学报》
CAS
北大核心
2016年第2期183-189,共7页
Journal of Taiyuan University of Technology
基金
中央高校基本科研业务费专项基金资助项目:农业大数据关键技术研究与应用(2015XD001)
关键词
无线传感器网络
时间同步
协同
误差
优化
wireless sensor network
time synchronization
cooperative
blunder
majorization