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Energy Effective Time Synchronization inWireless Sensor Network

机译:无线传感器网络中的能量有效时间同步

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Advance in processor, memory and wireless communication technique have led to an increase of economical and small wireless sensor nodes. To provide the right responses quickly for the diverse events, wireless sensor nodes have cooperation with together. For successful cooperation, the time synchronization among sensor nodes is an important requirement for application execution. In wireless sensor networks, message packets are used for the time synchronization. However, the transmission of message packets dissipates the battery energy of wireless sensor nodes. Since wireless sensor nodes works on the limited battery capacity, the excessive use of message packets has a negative impact upon their lifetime. In this paper, reference interpolation protocol is proposed for reducing the number of message packets for the time synchronization. The proposed method performs time interpolation between the time of reference packets and the global time of the base station. The proposed method completes the synchronization operation with only two message packets. Due to the simple synchronization procedure, our method greatly reduces the number of synchronization messages. From the decrease in the transmission of message packets, the convergence time among wireless sensor nodes is shortened and the lifetime of wireless sensor nodes is also prolonged as much as the amount of saved battery energy.
机译:处理器的前进,内存和无线通信技术导致了经济型和小无线传感器节点的增加。为了快速为不同事件提供正确的响应,无线传感器节点与一起合作。为了成功合作,传感器节点之间的时间同步是应用程序执行的重要要求。在无线传感器网络中,消息包用于时间同步。然而,消息分组的传输耗散了无线传感器节点的电池能量。由于无线传感器节点适用于电池容量有限,因此过度使用消息包对其寿命产生负面影响。在本文中,提出了参考插值协议,用于减少时间同步的消息分组数。所提出的方法在参考分组的时间和基站的全局时间之间执行时间内插。所提出的方法仅完成两个消息包的同步操作。由于同步过程简单,我们的方法大大减少了同步消息的数量。从消息分组的传输的减少,无线传感器节点之间的收敛时间缩短,无线传感器节点的寿命也延长了保存的电池能量的量。

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