Wireless power transfer techniques to transfer energy have been widely adopted by wireless rechargeable sensor networks (WRSNs). These techniques are aimed at increasing network lifetime by transferring power to end devices. Under these wireless techniques, the incurred charging latency to replenish the sensor nodes is considered as one of the major issues in wireless sensor networks (WSNs). Existing recharging schemes rely on rigid recharging schedules to recharge a WSN deployment using a single global charger. Although these schemes charge devices, they are not on-demand and incur higher charging latency affecting the lifetime of a WSN. This paper proposes a collaborative recharging technique to offload recharging workload to local chargers. Experiment results reveal that the proposed scheme maximizes average network lifetime and has better average charging throughput and charging latency compared to a global charger-based recharging.

中文翻译：

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无线可充电传感器网络中的协作无线功率传输

无线可充电传感器网络（WRSN）已广泛采用无线能量传输技术来传输能量。这些技术旨在通过将功率传输到终端设备来延长网络寿命。在这些无线技术下，为补充传感器节点而产生的充电延迟被认为是无线传感器网络（WSN）的主要问题之一。现有的充电方案依赖于严格的充电时间表，以使用单个全局充电器为WSN部署进行充电。尽管这些方案为设备充电，但它们不是按需的，并且会招致更高的充电等待时间，从而影响WSN的寿命。本文提出了一种协作充电技术，以将充电工作量卸载到本地充电器。