Evaluation of robustness in time synchronization for sensor networks
Evaluation of robustness in time synchronization for sensor networks
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DOI：
10.1109/bimnics.2007.4610089
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发表时间：
2007-12
期刊：
影响因子：
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通讯作者：
Akira Mutazono;M. Sugano;M. Murata
中科院分区：
文献类型：
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作者：
Akira Mutazono;M. Sugano;M. Murata
在传感器网络中，传感器节点之间的时间同步非常重要，因为它不仅影响信息收集的效率，而且影响能量消耗。由于传感器网络环境和规模以不同的速率变化，因此不同的网络需要不同的时间同步技术。脉冲耦合振荡器（PCO）模型可用于实现个体之间的局部交互，以实现整个网络的同步。还存在其他方法，例如多跳参考广播同步(RBS)方法，其通过通过划分为簇的网络发送参考节点的定时器的差异来同步整个网络。我们在这里比较了底层协议引起的抖动延迟和丢包对这两种技术的影响。我们还研究了两种方法的性能对网络规模和无线信道质量的影响。模拟结果显示了每种方法表现更好的条件。
In sensor networks, time synchronization between sensor nodes is important because it affects not only the efficiency of information gathering but also energy consumption. Since sensor network environments and sizes change at varying rates, different time synchronization techniques are required for different networks. The pulse-coupled oscillator (PCO) model can be used to achieve local interactions between individuals for the synchronization of entire networks. Other methods also exist, such as the multi-hop reference broadcast synchronization (RBS) method which synchronizes the entire network by transmitting the differences in the timers of reference nodes through networks divided into clusters. We compare here the influence of jitter delay and packet loss resulting from the lower layer protocol on these two techniques. We also investigate the influence on the performance of both methods on network size and wireless channel quality. The simulation results show the conditions in which each method performs better.