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Air-ground converged communication method based on unmanned aerial vehicle mode conversion

A technology that integrates communication and mode conversion. It is used in communication between vehicles and infrastructure, vehicle wireless communication services, and services based on specific environments. It can solve the problem of not being able to take into account mechanical energy consumption and signal transmission quality at the same time.

Active Publication Date: 2021-07-30
SOUTHEAST UNIV
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Problems solved by technology

[0003] In order to solve the above problems, the present invention discloses that in order to overcome the disadvantage that the existing UAV communication mode cannot take into account both mechanical energy consumption and signal transmission quality, the present inventio

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  • Air-ground converged communication method based on unmanned aerial vehicle mode conversion
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  • Air-ground converged communication method based on unmanned aerial vehicle mode conversion

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[0015] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer ” refer to directions towards or away from the geometric center of a particular part, respectively.

[0016] exist figure 1 Among them, the UAV communication link composed of UAV platform and downlink users and the cellular communication link composed of base station and user terminal constitute a typical UAV communication system. In the above scenario, the UAV communicates target data with downlink users, and forwards the data between the base station and the user terminal to...

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Abstract

The invention provides an air-ground converged communication method based on unmanned aerial vehicle mode conversion. The method comprises the following steps: enabling the signal frame time slot distribution of an unmanned aerial vehicle to be modeled as a function of economic efficiency and information age in a cruise unmanned aerial vehicle communication mode; establishing and solving by taking the economic efficiency of an air-ground link consisting of the unmanned aerial vehicle and ground nodes as an optimization target and taking the data acquisition and information forwarding age of the unmanned aerial vehicle as a constraint condition; in a static unmanned aerial vehicle communication mode, an unmanned aerial vehicle placement coordinate solving problem is converted into an energy consumption minimization problem taking an unmanned aerial vehicle three-dimensional coordinate as a dependent variable, and the energy consumption minimization problem is solved. And on the basis, establishing a function relationship between the economic efficiency and the state transition rate of the air-ground link by using Markov state transition, and further solving the state transition rate of the unmanned aerial vehicle by taking economic efficiency maximization as a target. By dynamically selecting the working mode of the unmanned aerial vehicle according to the wireless communication environment, a large amount of mechanical energy consumption caused by frequent cruise of the unmanned aerial vehicle can be avoided, and the economic efficiency of a communication link of the unmanned aerial vehicle is effectively improved.

Description

technical field [0001] The invention relates to the technical field of air-ground system communication for unmanned aerial vehicle mode conversion, in particular to an air-ground fusion communication method based on unmanned aerial vehicle mode conversion. Background technique [0002] At present, the existing UAV communication working modes mainly include cruise mode and static mode. UAVs working in cruise mode periodically fly to the vicinity of the target node to collect and transmit data, thus consuming a large amount of flight mechanical energy consumption, which greatly reduces the endurance of UAVs. UAVs communicating in static mode select an optimal location between target nodes for data collection and transmission. Although this mode saves a lot of energy consumption generated by flight, it reduces the quality of signal transmission due to the distance from the target node. Contents of the invention [0003] In order to solve the above problems, the present inve...

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Application Information

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IPC IPC(8): H04B7/185H04W4/40H04W4/44
CPCH04B7/18506H04B7/18504H04W4/40H04W4/44Y02D30/70
Inventor 厉东明
Owner SOUTHEAST UNIV
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