Throughput maximization for UAV-assisted wireless powered D2D communication networks with a hybrid time division duplex/frequency division duplex scheme

In this paper, we investigate a low-altitude unmanned aerial vehicle (UAV)-assisted wireless power- ed device-to-device (D2D) network with the “harvest-transmit-store” model, where a UAV broadcasts energy to all D2D transmitters and the transmitters then store or use the energy for transmission info...

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Bibliographic Details
Published in:Wireless networks 2021-04, Vol.27 (3), p.2147-2157
Main Authors: Lei, Ming, Zhang, Xingjun, Yu, Bocheng, Fowler, Scott, Yu, Bin
Format: Article
Language:English
Subjects:
Algorithms
Charging
Cochannel interference
Communication networks
Communications Engineering
Computer Communication Networks
Electrical Engineering
Engineering
Frequency division duplexing
IT in Business
Low altitude
Networks
Optimization
Power control
Power transfer
Spectrum allocation
Time division
Transmitters
Unmanned aerial vehicles
Wireless communications
Wireless networks
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Summary:In this paper, we investigate a low-altitude unmanned aerial vehicle (UAV)-assisted wireless power- ed device-to-device (D2D) network with the “harvest-transmit-store” model, where a UAV broadcasts energy to all D2D transmitters and the transmitters then store or use the energy for transmission information. In the proposed model, the UAV does not transmit energy in the transmission information time, resulting in a limited charging time. In addition, the interference may be caused by communicating information of an arbitrary number of D2D pairs simultaneously. In this paper, we propose a hybrid time division duplex/frequency division duplex communication scheme, which performs the power transfer and information transmission simultaneously in the transmission information time. The scheme cancels the cochannel interference by using the time division duplex scheme and guarantees the charging time by using the frequency division duplex. We consider optimizing the throughput based on the scheme via joint power control, spectrum allocation, and scheduling time. We propose a two-step algorithm to solve the formulated nonconvex problem. The simulation results show that the proposed algorithm improves the average throughput compared to the other schemes.
ISSN:1022-0038
1572-8196
1572-8196
DOI:10.1007/s11276-021-02562-w