Data transmission method, apparatus and system

A data transmission method and candidate frequency technology, applied in the field of communication, can solve problems such as affecting the quality of data transmission between UAVs and ground terminals, and unstable wireless transmission links.

Active Publication Date: 2018-08-10
SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the drone is transmitting data with the ground terminal, it is susceptible to interference from external signals, resulting in instability of the wireless transmission link, thereby affecting the quality of data transmission between the drone and the ground terminal.

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  • Data transmission method, apparatus and system
  • Data transmission method, apparatus and system
  • Data transmission method, apparatus and system

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Embodiment Construction

[0092] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0093] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ci...

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Abstract

The invention provides a data transmission method, apparatus and system. The method comprises the following steps: receiving a first pilot signal transmitted by an unmanned aerial vehicle within a detection period, wherein the first pilot signal refers to a downlink signal obtained by modulating a useful signal on preset candidate frequency points, and the preset candidate frequency points comprise frequency points located in the same frequency band and / or in different frequency bands; determining a downlink working frequency point from the preset candidate frequency points according to the first pilot signal; sending a first feedback signal to the unmanned aerial vehicle, wherein the first feedback signal comprises information of the downlink working frequency point; and receiving downlink data modulated on the downlink working frequency point and sent by the unmanned aerial vehicle. Therefore, the frequency point detection in the same frequency band and / or cross frequency bands is realized to select the optimal preset candidate frequency point to serve as the working frequency point, so that the data transmission between the unmanned aerial vehicle and a remote controller is morestable, the interference of external signals is reduced, and the data transmission quality of the unmanned aerial vehicle and a ground terminal is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method, device and system. Background technique [0002] Unmanned aircraft, referred to as "UAV", is an unmanned aircraft controlled by radio remote control equipment and its own program control device. UAVs are responsible for tasks such as ground monitoring, target tracking, and military strikes. Because of their small size and strong flexibility, they play an extremely important role in the military and civilian fields. The performance of the transmission link of the UAV directly determines the safety and flight efficiency of the UAV. The UAV transmission link can be divided into uplink and downlink according to the direction of data transmission. The uplink mainly completes the transmission of remote control commands from the ground terminal to the UAV, realizing real-time control of flight attitude and command automation; the downlink mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W72/04G08C17/02
CPCH04L5/0048H04W72/0453G08C17/02H04B7/18506H04B1/005G08C2201/50H04L5/006H04L5/1469
Inventor 胡小军刘洪
Owner SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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