Lifetime maximization for sensor networks with wireless energy transfer

Abstract

Abstract-In

Transmission Strategies for Remote Estimation With an Energy Harvesting Sensor

“…off-line optimization as investigated for a wide-range of scenarios, including rate-based metrics [6][7][8][9] and source coding/estimation [14][15][16], [20], [21]. This type of offline optimization approaches are suitable for energy harvesting scenarios with dedicated power transfer, for instance as in [26], [27] where wireless power transfer is scheduled a priori. They also provide benchmarks for performance limits of energy harvesting systems and structural guidelines for efficient solutions in the general case.…”

“…Off-line optimization approaches have been investigated for various scenarios, such as point-to-point channels [5], [6], broadcast channels [7], [8] and multiple-access channels [9] under rate based performance criterion as well as for source coding [14], [20], [21] and remote estimation scenarios [16]. From an energy harvesting perspective, these type of approaches are well-suited for scenarios where the energy arrivals can be accurately predicted, such as RF energy harvesting scenarios with dedicated power transfer scheduling as in [26], [27]. Off-line optimization approaches also provide benchmarks to evaluate the fundamental performance limitations for energy harvesting systems and structural guidelines which facilitate possibly sub-optimal but efficient solutions for the general case.…”

Towards Immortal Wireless Sensor Networks by Optimal Energy Beamforming and Data Routing

“…However, the data of the sensor nodes are transmitted directly to the sink due to the fact that data routing is infeasible in the underground model considered in this work. In [16], the authors assumed that the base station forms a sharp energy beam to charge a sensor node in a given timeslot. Then, they studied the problem of scheduling the energy beams to maximize the WSN lifetime, and provided a greedy algorithm to achieve the optimal solution.…”

Optimal energy beamforming and data routing for immortal wireless sensor networks

“…They formulated a convex optimization and provided a closed form solution. In [12], the authors assumed that the base station forms a sharp energy beam to charge a sensor node in a timeslot, and studied the scheduling of the energy beams such that the WSN lifetime is maximized. Besides, Xie et.…”