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arXiv 1507.04497cs.ITmath.IT
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有限电池能量收集装置的联合传输和能量转移策略

Joint Transmission and Energy Transfer Policies for Energy Harvesting Devices with Finite Batteries

Alessandro Biason, Michele Zorzi

摘要:

在传统的无线传感器网络(WSNs)的主要问题之一是能源效率。在这项工作中,我们分析了两种技术,可以延长网络的生命周期。第一种是环境\emph{Energy Harvesting}(EH),即,设备从环境中收集能量的能力,而第二种是无线\emph{Energy Transfer}(ET),可用于在设备之间交换能量。我们研究了这些技术的组合,表明它们可以共同使用,以提高系统的性能。我们考虑一个发射器-接收器对,显示ET改善如何取决于能量到达的统计和设备的能量消耗。为了最大化奖励函数,例如,的平均传输速率,我们发现性能上限与ET和没有,定义在线和离线优化问题,并根据现实的能源抵达在室内和室外环境的结果。我们表明,ET可以显着提高系统的性能,即使当相当大的一部分传输的能量被浪费,在某些情况下,在线方法可以获得接近最佳性能。

英文摘要:

One of the main concerns in traditional Wireless Sensor Networks (WSNs) is energy efficiency. In this work, we analyze two techniques that can extend network lifetime. The first is Ambient \emph{Energy Harvesting} (EH), i.e., the capability of the devices to gather energy from the environment, whereas the second is Wireless \emph{Energy Transfer} (ET), that can be used to exchange energy among devices. We study the combination of these techniques, showing that they can be used jointly to improve the system performance. We consider a transmitter-receiver pair, showing how the ET improvement depends upon the statistics of the energy arrivals and the energy consumption of the devices. With the aim of maximizing a reward function, e.g., the average transmission rate, we find performance upper bounds with and without ET, define both online and offline optimization problems, and present results based on realistic energy arrivals in indoor and outdoor environments. We show that ET can significantly improve the system performance even when a sizable fraction of the transmitted energy is wasted and that, in some scenarios, the online approach can obtain close to optimal performance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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