A resource allocation method in UAV-assisted network based on wireless energy transmission

A wireless energy transmission and auxiliary network technology, which is applied in the field of resource allocation in the UAV auxiliary network, can solve problems such as less consideration of user data rate requirements, and achieve the effect of reducing energy consumption and reducing energy consumption

Active Publication Date: 2021-05-14
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0008] Although the existing technology provides various solutions for the energy consumption optimization of UAVs, there are few studies on the use of wireless energy transfer technology to power UAVs. , less consideration is given to user data rate requirements

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  • A resource allocation method in UAV-assisted network based on wireless energy transmission
  • A resource allocation method in UAV-assisted network based on wireless energy transmission
  • A resource allocation method in UAV-assisted network based on wireless energy transmission

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Embodiment Construction

[0113] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0114] The UAV of the invention acts as a relay in the network, receives information and collects energy from the BS by using PS SWIPT technology, and provides communication services for ground users in the next time slot. By optimizing the power allocation ratio and time allocation ratio, the balance between energy harvesting and information transmission is achieved. Meanwhile, the location of the UAV has a significant impact on the wireless link between the BS, the UAV and the user.

[0115] Therefore, under the constraints of user data rate requirements, the optimization problem is formulated by comprehensively considering the user's data rate, UAV position, power and time control, and the optimization problem is decomposed into two sub-problems...

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Abstract

The invention discloses a resource allocation method in an unmanned aerial vehicle auxiliary network based on wireless energy transmission, which belongs to the field of mobile communication. First construct a UAV-assisted network scenario composed of base stations, UAVs and users; then construct the channel model and channel capacity between users and UAVs, base stations and UAVs respectively; use the transmission of UAVs to users Power, as well as the channel model between the base station and the UAV, construct a UAV communication energy consumption model that satisfies the constraints and solve it, and introduce the concept of centroid to optimize the position of the UAV under the given time allocation ratio and power allocation ratio. Continue to optimize the time allocation ratio and power allocation ratio under the given position of the drone, and alternately optimize to obtain the optimal solution; deploy the drone according to the optimal position of the drone, and allocate the optimal power and time according to the requirements Ratio to allocate radio resources. The invention satisfies the user's data rate requirement while maximizing wireless energy collection and reducing energy consumption.

Description

technical field [0001] The invention belongs to the field of mobile communication, and in particular relates to a resource allocation method in an unmanned aerial vehicle auxiliary network based on wireless energy transmission. Background technique [0002] Currently, mobile communication plays an increasingly important role in daily life; in some emergency situations, people need to support communication in a very flexible and urgent way, such as natural disasters and temporary hotspots. Therefore, a way for unmanned aerial vehicles (unmanned aerial vehicles, UAVs) to cooperate with ground nodes is proposed, and to serve as flying base stations (base stations, BSs), relay stations or mobile nodes by being equipped with communication and processing modules. Due to the advantages of deployment flexibility, high mobility, and low cost, wireless networks assisted by unmanned aerial vehicles have attracted attention from both industry and academia. [0003] However, due to the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/22H04W52/24H04W52/26H04W52/36H04W72/04H04W72/08H04B7/185
CPCH04W16/22H04W52/242H04W52/267H04W52/367H04W72/0446H04W72/0473H04B7/18504H04W72/54
Inventor 李曦陈淑颖纪红张鹤立
Owner BEIJING UNIV OF POSTS & TELECOMM
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