论文标题
无线传感器网络时间同步的一种新型快速液化方法，并实时延迟补偿
A Novel Rapid-flooding Approach with Real-time Delay Compensation for Wireless Sensor Network Time Synchronization
论文作者
论文摘要
基于单向广播的洪水时间同步算法通常用于无线传感器网络（WSN）。但是，数据包延迟和时钟漂移构成了准确性，因为它们在WSN中带来了严重的副跳跃误差积累问题。为了克服这一点，本文提出了快速洪水多宽广播时间同步（RDC-RMTS）。通过使用快速滴定协议，RDC-RMT中参考时间信息的洪水潜伏期大大减少。此外，开发了新的联合时钟偏差最大似然估计，以获得准确的时钟参数估计和实时数据包延迟估计。此外，RDC-RMTS的创新实现设计了自适应时钟偏移估计。实验结果表明，RDC-RMT可以轻松减少可变延迟，并显着减慢副跳跃误差积累的生长。因此，所提出的RDC-RMT可以在大规模复合物WSN中实现准确的时间同步。
One-way-broadcast based flooding time synchronization algorithms are commonly used in wireless sensor networks (WSNs). However, the packet delay and clock drift pose challenges to accuracy, as they entail serious by-hop error accumulation problems in the WSNs. To overcome it, a rapid flooding multi-broadcast time synchronization with real-time delay compensation (RDC-RMTS) is proposed in this paper. By using a rapid-flooding protocol, flooding latency of the referenced time information is significantly reduced in the RDC-RMTS. In addition, a new joint clock skew-offset maximum likelihood estimation is developed to obtain the accurate clock parameter estimations, and the real-time packet delay estimation. Moreover, an innovative implementation of the RDC-RMTS is designed with an adaptive clock offset estimation. The experimental results indicate that, the RDC-RMTS can easily reduce the variable delay and significantly slow the growth of by-hop error accumulation. Thus, the proposed RDC-RMTS can achieve accurate time synchronization in large-scale complex WSNs.
