移动无线传感器网络基于扩散的时钟同步

研究了移动无线传感器网络中基于扩散的时钟同步方法，针对当前移动无线传感器网络时钟同步速度较慢 的问题，对影响时钟同步性能的要素进行了分析，并做出了两点改进以提高同步速度。通过仿真的方法，说明移动无 线传感器网络的同步运算轮次、网络节点数目、节点通信范围和运动速度都对同步速度有影响，通过改变节点参与同 步运算的概率可以在不增加总计算量的同时提高同步速度。仿真结果证明，与其他同步方法相比，基于扩散的时钟同 步可以充分利用移动无线传感器网络中节点移动的特性，并且改进方法可以进一步提高网络的同步速度。

Diffusion-based Clock Synchronization in Mobile Wireless Sensor Networks

The diffusion-based clock synchronization in mobile wireless sensor networks(mWSNs) was researched. To improve the synchronization speed, the essential factors that affect the synchronization performance were analyzed, and two new schemes were put forward. Through simulations, it was illustrated that the synchronization operation rounds, the amount of nodes in networks, the communication range and motion speed of nodes all affected the synchronization speed in mWSNs. I3y giving different operating probability to nodes, the synchronization performance can be improved in the limit of sum of operations. hhe simulation results show that the diffusion-based clock synchronization can enhance the performance in mWSNs utilizing the mobility of nodes, and the two new schemes can improve the synchronization speed further.