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An Energy-Efficient Controller for Wirelessly-Powered Communication Networks
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DOI：10.1109/TCOMM.2020.2994228.png)
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Abstract
En 中文
In a wirelessly-powered communication network (WPCN), an energy access point (E-AP) supplies the energy needs of the network nodes through radio frequency wave transmission, and the nodes store their received energy in their batteries for possible data transmission. In this paper, we propose an online control policy for energy transfer from the E-AP to the wireless nodes and for data transfer among the nodes. With our proposed control policy, all data queues of the nodes are stable, while the average energy consumption of the network is shown to be within a bounded gap of the minimum energy required for stabilizing the network. Our proposed policy is designed using a quadratic Lyapunov function to capture the limitations on the energy consumption of the nodes imposed by their battery levels. We show that under the proposed control policy, the backlog level in the data queues and the stored energy level in the batteries fluctuate in small intervals around some constant levels. Consequently, by imposing a negligible average data drop rate, the data buffer size and the battery capacity of the nodes can be significantly reduced.
Keywords:
Batteries
Wireless communication
Data communication
Energy consumption
Lyapunov methods
Optimization
Resource management
Internet of things
wireless energy transfer (WET)
wireless powered communication networks (WPCNs)
finite block-length analysis
cooperative communication
Lyapunov stability
stochastic optimization
routing
scheduling
Green communication
batteries
queuing analysis
networks
stability
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