摘要
作为传感器网络应用的一项重要支撑技术,时间同步方法受到国内外传感器网络研究人员的广泛关注。由于传感器节点受到成本、能量和体积的限制,传感器网络的时间同步面临一些新的挑战。提出一种低开销的时间同步算法(Low-cost Time Synchronization Protocol,LTSP),通过两次同步操作实现全网的时间同步。实验结果表明:该算法在低开销设计的基础上,同步精度满足预期目标。
As an important support for both design and application of sensor networks, time synchronization for sensor networks has attracted wide attention of researchers domestic and abroad. Because of the limitation of cost, power and size of the individual nodes, time synchronization always encounters many new challenges. The paper presents a novel and low cost time synchronization algorithm named LTSP （Low-cost Time Synchronization Protocol）. LTSP can achieve good accuracy by two synchronization operations. The experiment data result shows that： the time accuracy of the protocol which based on low-cost design principles can meet the expectation.
关键词
传感器网络
时间同步
时间戳
sensor networks
time synchronization
time stamping
