摘要
节点的时间同步是无线传感器网络的一项支撑技术。鉴于目前对低能耗的多跳时间同步算法的研究相对缺乏,本文在分析了TPSN时间同步算法的基础上,提出了一种适合低流量无线传感器网络的低能耗多跳按需时间同步算法。具体阐述了单点同步和多点同步算法,分析了算法的精度与复杂度。仿真实验表明本文提出的算法与TPSN算法相比,在相同精度的前提下,具有复杂度低、节能等优点。
Time synchronization is a supporting technology in wireless sensor networks. But now there is relatively less research on lowering energy consumption in multi-hop time synchronization. As above reasons, on the groundwork of TPSN, this paper presents a low energy-consumed time synchronization algorithm which fits the multi-hop wireless sensor networks. In this algorithm, we expatiate single-node and multi-nodes synchronization algorithm, and analyze their precision and complexity. Emulational experiments prove that, comparing with TPSN, our algorithms have the same precision, lower complexity and lower energy consumption.
出处
《传感技术学报》
CAS
CSCD
北大核心
2008年第11期1881-1886,共6页
Chinese Journal of Sensors and Actuators
基金
浙江省自然科学基金资助(Y107553)"无线传感器网络时间同步及其优化研究"
关键词
无线传感器网络
时间同步
TPSN协议
节能
按需
wireless sensor networks
time synchronization
TPSN protocol
low energy consumption
on-demand
