A UAV networking communication system and method

Abstract

The embodiment of the present invention relates to the technical field of unmanned aerial vehicle communication, and discloses a unmanned aerial vehicle networking communication system and method. The system includes a unmanned aerial vehicle, a 4G base station, at least one relay base station, a ground base station and a control terminal. Each relay base station is provided with a 4G module with an Internet of Things card inserted therein, each relay base station is connected to a 4G network through the 4G module, each relay base station is connected to the 4G network through the 4G network, and one relay base station is connected to only one unmanned aerial vehicle through the 4G network to obtain multimedia data. The ground base station and the relay base station link that is closest to the ground base station are connected through the 4G network to obtain multimedia data, and the control terminal is wirelessly connected to the ground base station to obtain multimedia data. Through the networking communication system and method provided by the embodiment of the present invention, the unmanned aerial vehicle can expand the range of the self-organizing network to realize long-distance relay transmission, and has good scalability and a large coverage range.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of unmanned aerial vehicle communication technology, and in particular to a unmanned aerial vehicle networking communication system and method. Background Art

[0002] A drone, also known as an unmanned aerial vehicle (UAV), is an unmanned aircraft that can be controlled using a radio remote control device and a self-contained program control device, or an unmanned aircraft that is operated completely or intermittently autonomously by an onboard computer.

[0003] Nowadays, drones have been widely used in aerial photography, reconnaissance, public security / firefighting / transportation / emergency rescue, customs border defense / maritime surveillance, real-time broadcasting / on-site monitoring, power line inspection / pipeline inspection, plant protection and other fields. Among them, the communication between drones and the ground end is mainly through the proprietary network connection of its own relay base station for data transmission. Its characteristic is that it needs to ensure line of sight between the two ends and is easily affected by environmental occlusion. This problem also leads to the fact that in actual use, the range that drones can cover is very limited due to environmental occlusion, which restricts their use. Summary of the invention

[0004] The embodiments of the present application provide a drone networking communication system and method.

[0005] The purpose of the embodiment of the present invention is achieved through the following technical solutions:

[0006] To solve the above technical problems, in the first aspect, an embodiment of the present invention provides a drone networking communication system, including: a drone, configured to collect multimedia data; a 4G base station, configured to provide a 4G network; at least one relay base station, each of the relay base stations is provided with a 4G module with an Internet of Things card inserted, and each of the relay base stations is connected to the 4G network through the 4G module, wherein the relay base stations are connected to each other through the 4G network, and one of the relay base stations is only connected to one of the drones through the 4G network to obtain the multimedia data; a ground base station, connected to the relay base station closest to the ground base station in the relay base station link through the 4G network to obtain the multimedia data, wherein the relay base station link is a link composed of several relay base stations that realize communication connection between the drone and the ground base station; a control terminal, wirelessly connected to the ground base station to obtain the multimedia data.

[0007] In some embodiments, the system also includes: a cloud server, which is communicatively connected to the control terminal and each of the relay base stations through the 4G network, and the cloud server is configured to control the switching of each of the relay base stations in the relay base station link according to the flight mission, and to interact with the control terminal for data.

[0008] In some embodiments, each of the relay base stations stores a unique identifier for determining the identity information of the relay base station; each of the relay base stations is provided with a differential positioning module for locating the drone connected to the relay base station.

[0009] In some embodiments, each relay base station is provided with a rechargeable battery.

[0010] To solve the above technical problems, in the second aspect, an embodiment of the present invention provides a UAV networking communication method, which is applied to the UAV networking communication system described in the first aspect, wherein the UAVs in the UAV networking communication system are connected to the relay base station through a 4G network, and the method includes: planning a flight route according to the flight mission and turning on each relay base station in the relay base station link through the 4G network; collecting multimedia data through the UAV and transmitting the multimedia data back to the control terminal through the 4G network in sequence through the relay base station link and the ground base station.

[0011] In some embodiments, the method of turning on each relay base station in the relay base station link through the 4G network includes: inserting an Internet of Things card into the 4G module of each relay base station constituting the relay base station link to activate each relay base station in the relay base station link; the cloud server sends a turn-on instruction to each relay base station in the relay base station link through the 4G network; and each relay base station in the relay base station link turns on after receiving the turn-on instruction.

[0012] In some embodiments, after each relay base station in the relay base station link is turned on through the 4G network, the method further includes: the relay base station link performs a link self-check.

[0013] In some embodiments, the multimedia data is collected by the drone and transmitted back to the control terminal through the 4G network in sequence through the relay base station link and the ground base station, including: the drone routes the multimedia data to the relay base station connected to the drone through the 4G network; the relay base station connected to the drone routes the multimedia data to the relay base station closest to the ground base station through the relay base station link; the relay base station closest to the ground base station routes the multimedia data to the ground base station; the ground base station transmits the multimedia data back to the control terminal through a wireless communication connection.

[0014] In some embodiments, the method also includes: the control terminal obtains the user's control instructions, and sends the control instructions to the ground base station through a wireless communication connection; the ground base station sends the control instructions to the relay base station closest to the ground base station in the relay base station link through the 4G network; the relay base station closest to the ground base station sends the control instructions to the relay base station connected to the drone through the 4G network; the relay base station connected to the drone sends the control instructions to the drone through the 4G network to enable the drone to perform a flight mission.

[0015] In some embodiments, the method further includes: controlling the drone to connect to the nearest relay base station and perform remote takeoff and landing.

[0016] In some embodiments, the method further includes: obtaining a unique identifier of a relay base station connected to the drone to determine the location range of the drone; and accurately locating the drone through a differential positioning module in the relay base station connected to the drone.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: Different from the prior art, an embodiment of the present invention provides a drone networking communication system and method, the system includes a drone, a 4G base station, at least one relay base station, a ground base station and a control terminal, each relay base station is provided with a 4G module with an Internet of Things card inserted, each relay base station is connected to a 4G network through a 4G module, each relay base station is connected to the 4G network through a 4G network, a relay base station is only connected to one drone through the 4G network to obtain multimedia data, the ground base station and the relay base station link The nearest relay base station to the ground base station is connected through the 4G network to obtain multimedia data, the control terminal is wirelessly connected to the ground base station to obtain multimedia data, and the networking communication system and method provided by the embodiment of the present invention The drone can expand the range of self-organizing networking to achieve long-distance relay transmission, and has good scalability and a large coverage range. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements / modules and steps with the same reference numerals in the drawings are represented as similar elements / modules and steps. Unless otherwise specified, the figures in the drawings do not constitute proportional limitations.

[0019] Figure 1 1 is a schematic diagram of the structure of a UAV networking communication system provided by Embodiment 1 of the present invention;

[0020] Figure 2 1 is a flow chart of a method for networking and communicating unmanned aerial vehicles provided in Embodiment 2 of the present invention;

[0021] Figure 3 yes Figure 2 A schematic diagram of a sub-process of step S20 in the UAV networking communication method shown;

[0022] Figure 4 1 is a flow chart of another unmanned aerial vehicle networking communication method provided by Embodiment 2 of the present invention;

[0023] Figure 5 1 is a flow chart of another unmanned aerial vehicle networking communication method provided by Embodiment 2 of the present invention;

[0024] Figure 6 1 is a flow chart of another unmanned aerial vehicle networking communication method provided in Embodiment 2 of the present invention;

[0025] Figure 7 This is a flow chart of another UAV networking communication method provided in Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0027] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] It should be noted that, if there is no conflict, the various features in the embodiments of the present invention can be combined with each other, all within the scope of protection of the present application. In addition, although the functional modules are divided in the device schematic diagram and the logical order is shown in the flow chart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the flow chart. It should be noted that when an element is described as "connected" to another element, it can be directly connected to the other element, or there can be one or more intermediate elements in between.

[0029] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] The mainstream solution to improve the coverage of drones on the market is to expand the coverage of drones through networking. There are currently two main networking technology solutions, but both have corresponding shortcomings:

[0032] Solution 1: One drone acts as a relay and connects to other drones through a point-to-point proprietary network. The number of drone nodes is increased to expand the transmission distance. This method increases the cruising distance of drones by increasing the number of drones. However, due to the limited capacity of drone batteries, drones acting as relay nodes cannot maintain working status for a long time and must replace batteries within a certain period of time. This also affects the stability of the entire link and reduces the efficiency of cruising.

[0033] Solution 2: Control the drone through 3G / 4G / 5G network to achieve long-distance drone flight control and real-time video monitoring. This method requires the use of the operator's base station to communicate with the drone. In this solution, the flight altitude of the drone is usually higher than the base station, and the base station signal is mainly transmitted in the horizontal and lateral directions, which results in a weak signal between the base station and the drone. In addition, there are usually fewer operator base stations deployed in remote areas such as mountainous areas, which will result in weaker signals and an inability to guarantee a stable connection between the drone and the base station. In addition, from an economic perspective, transmitting drone images through the operator's services requires huge traffic and increases the cost of use.

[0034] In order to solve the problems mentioned above, such as the current drones are limited by environmental obstructions resulting in a short flight distance, and the need to deploy a large number of relay base stations resulting in high costs, the embodiments of the present invention provide a drone networking communication system and method, which, by setting up a ground base station and multiple relay base stations, flexibly adjusts each relay base station in the relay base station link according to the flight mission and the location of the drone, thereby achieving flexible networking, and can easily select the optimal relay base station to work, thereby achieving long-distance coverage. At the same time, the existing 4G base station is used to achieve network management between the drone and the control terminal, which can effectively reduce operating costs and achieve full geographical coverage.

[0035] Specifically, the embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0036] Embodiment 1

[0037] The embodiment of the present invention provides a UAV networking communication system, see Figure 1, which shows the structure of a drone networking communication system provided by an embodiment of the present invention, the drone networking communication system 1 includes: a drone 10, a 4G base station 20, at least one relay base station 30, a ground base station 40, and a control terminal 50. Furthermore, the drone networking communication system 1 also includes a cloud server 60.

[0038] The drone 10 is configured to collect multimedia data; the drone (Unmanned Aerial Vehicle / Drones, UAV) 10 is used to perform detection work. The drone 10 is equipped with sensors such as radar and camera, which can realize reconnaissance, aerial photography and other tasks, and is provided with a communication module, which can realize communication connection with the relay base station 30 on the ground. The drone 10 and the relay base station 30 realize data transmission through proprietary connection technology, and the corresponding proprietary network can be selected according to actual needs and scenarios.

[0039] The 4G base station 20 is configured to provide a 4G network and is a network public mobile communication base station dedicated to providing 4G services. The speed of the 4G network can be as high as 100Mbps, and it has the advantages of fast communication speed, intelligence, and strong compatibility. It can make the quality of the transmitted image and the image look clearer, so it is very suitable for realizing the transmission of multimedia data collected by the drone 10. Devices, base stations, etc. can activate and connect to the 4G base station 20 by inserting an Internet of Things card in the 4G module, and use the 4G network to transmit data.

[0040] The at least one relay base station 30 includes a plurality of relay base stations 30, Figure 1 Only three relay base stations 30a, 30b and 30c are shown. In actual application scenarios, the number of relay base stations 30 can be set according to actual needs. In addition, each relay base station 30 is provided with a 4G module with an Internet of Things card inserted, each relay base station 30 is connected to the 4G network through the 4G module, each relay base station 30 is connected through the 4G network, and one relay base station 30 is only connected to one drone 10 through the 4G network to obtain the multimedia data; preferably, the proprietary connection is a point-to-point proprietary network connection, and the drone 10 is connected to the nearest relay base station 30c on the relay base station link, and can send multimedia data to the nearest relay base station 30c, and then route the multimedia data to the ground base station 40 through the relay base station link in turn through the relay base station 30b and the relay base station 30a.

[0041] It should be noted that in the embodiments of the present invention Figure 1In the example shown, relay base stations 30a, 30b and 30c form a relay base station link. In some other embodiments, the number of relay base station links, and the number and position of relay base stations 30 in the relay base station link, etc., can be set according to actual needs. When selecting relay base stations that constitute the relay base station link, the quality of the drone transmission signal and the length of the transmission path can be comprehensively considered for selection, without being bound by the limitations of the embodiments of the present invention.

[0042] Furthermore, each of the relay base stations 30 stores a unique identifier, and the control terminal 50 can determine the identity information of the relay base station 30 through the unique identifier, determine the relay base station 30 to which the drone 10 is currently connected, and thus determine the location range of the drone 10. The unique identifier can be a serial code or other data that can identify the identity information of the relay base station 30. Furthermore, the identity, model, approximate location, coverage range and other information of the relay base station 30 corresponding to the unique identifier can be stored in the cloud server 60, and when a query is needed, the query can be performed according to the unique identifier by looking up a table.

[0043] In addition, each of the relay base stations 30 is provided with a differential positioning module (Real-time kinematic, RTK), which is used to locate the drone 10 connected to the relay base station 30. The differential positioning module RTK adopts real-time dynamic carrier phase difference technology, which can send the carrier phase collected by the base station to the control terminal 50 to calculate the difference coordinates, thereby obtaining the accurate position or relative position of the drone 10 and the relay base station 30, and realizing high-precision positioning.

[0044] Furthermore, each of the relay base stations 30 is provided with a rechargeable battery, so as to ensure that the relay base station 30 can keep working for a long time without losing power. The rechargeable battery can be a high-density battery such as a lithium battery, or a battery charged by a solar panel. When the relay base station 30 is not started, the low-power consumption mode of the relay base station 30 is turned off, and it is turned on after receiving the start-up command, so as to save energy as much as possible. Specifically, the type and quantity of the rechargeable battery can be selected according to actual needs.

[0045] The ground base station 40 is connected to the relay base station 30 closest to the ground base station in the relay base station link through the 4G network to obtain the multimedia data through the relay base station link, wherein the relay base station link is a link composed of several relay base stations 30 for the drone 10 to achieve communication connection with the ground base station 40; preferably, the ground base station 40 is the base station closest to the control terminal 50. In addition, the ground base station 40 can communicate with one or more relay base stations 30 at the same time. When there are more than two drones 10 and more than two relay base station links and they all need to return data or receive instructions, the ground base station 40 can also be connected to the relay base station 30 closest to the ground base station 40 in the two or more relay base station links at the same time or in a cross-time sharing manner, so as to realize data transmission. At this time, the ground base station 40 can also control the switching of connections with different relay base station links.

[0046] The control terminal 50 is wirelessly connected to the ground base station 40 to obtain the multimedia data; the control terminal 50 is a terminal capable of receiving user instructions. Preferably, a display screen may also be provided on the control terminal 50 to provide a visual function. The control terminal 50 may be a remote control device, a tablet, a mobile phone, a computer, etc., and may be specifically designed according to actual needs. In an embodiment of the present invention, the control terminal 50 is connected to the ground base station 40 via wireless communication, for example, wireless communication connection may be achieved via WiFi, Bluetooth, etc., and may be specifically selected according to actual needs.

[0047] The cloud server 60 is connected to the control terminal 50 and each of the relay base stations 30 through the 4G network. The cloud server 60 is configured to control the switch of each of the relay base stations 30 in the relay base station link according to the flight mission, and to exchange data with the control terminal 50. The cloud server 60 has the functions of data storage and data processing / calculation. The cloud server 60 can perform route planning, and can also query the data of the relay base stations and drones in the database according to the query instructions sent by the control terminal 50, and can also send control instructions to each of the relay base stations 30 to control the opening or closing of each of the relay base stations 30.

[0048] Embodiment 2

[0049] The embodiment of the present invention provides a method for drone networking communication, see Figure 2 , which shows the process of a drone networking communication method provided by an embodiment of the present invention. The drone networking communication method can be applied to the drone networking communication system described in Example 1. The drone in the drone networking communication system is connected to the relay base station via a 4G network. The method includes but is not limited to the following steps:

[0050] Step S10: planning a flight route according to the flight mission and opening each relay base station in the relay base station link through the 4G network;

[0051] Specifically, first, the control terminal plans a flight route according to the flight mission, and sends the flight mission to the cloud server through the 4G network. Secondly, after determining the flight route, select a relay base station link that takes into account both good signals and short paths, and determine the relay base stations that constitute the relay base station link. Finally, turning on each relay base station in the relay base station link through the 4G network includes: inserting an Internet of Things card into the 4G module of each relay base station constituting the relay base station link to activate each relay base station in the relay base station link; the cloud server sends an activation instruction to each relay base station in the relay base station link through the 4G network; each relay base station in the relay base station link is turned on after receiving the activation instruction. Among them, each relay base station is usually in low power consumption mode, and is only turned on through the cloud server when the flight mission is turned on, thereby saving power and ensuring its endurance.

[0052] Step S20: Collect multimedia data through the drone and transmit the multimedia data back to the control terminal through the 4G network in sequence through the relay base station link and the ground base station.

[0053] Specifically, see Figure 3 , which shows Figure 2 A sub-process of step S20 in the drone networking communication method, wherein the multimedia data is collected by the drone and transmitted back to the control terminal through the 4G network in sequence through the relay base station link and the ground base station, includes but is not limited to the following steps:

[0054] Step S21: the drone routes the multimedia data to a relay base station connected to the drone through the 4G network;

[0055] Step S22: the relay base station connected to the drone routes the multimedia data to the relay base station closest to the ground base station through the relay base station link;

[0056] Step S23: the relay base station closest to the ground base station routes the multimedia data to the ground base station;

[0057] Step S24: the ground base station transmits the multimedia data back to the control terminal via a wireless communication connection.

[0058] In the embodiments of the present invention, please refer to the above Figure 1After collecting the multimedia data, the drone 10 sends it to the relay base station 30c closest to the drone, and then transmits it to the relay base station 30a closest to the ground base station 40 through the relay base station link. The relay base station 30a closest to the ground base station 40 sends the multimedia data to the ground base station 40, and the ground base station 40 sends the multimedia data to the control terminal 50. The user then performs the next step according to the displayed multimedia data.

[0059] In some embodiments, see Figure 4 , which shows the process of another drone networking communication method provided by an embodiment of the present invention. After each relay base station in the relay base station link is turned on through the 4G network, the method further includes:

[0060] Step S30: The relay base station link performs a link self-check.

[0061] In the embodiment of the present invention, before the drone performs a flight mission, it will perform a relay base station link self-check to ensure that the link is unobstructed and that any relay base station connected to the drone in the link can route data to the control terminal. Furthermore, during the flight of the drone, each relay base station will also report the working status of the relay base station in real time.

[0062] In some embodiments, see Figure 5 , which shows the process of another drone networking communication method provided by an embodiment of the present invention, the method also includes:

[0063] Step S41: the control terminal obtains a control instruction from the user, and sends the control instruction to the ground base station via a wireless communication connection;

[0064] Step S42: the ground base station sends the control instruction to the relay base station closest to the ground base station in the relay base station link through the 4G network;

[0065] Step S43: the relay base station closest to the ground base station sends the control instruction to the relay base station connected to the drone via the 4G network;

[0066] Step S44: The relay base station connected to the drone sends the control instruction to the drone through the 4G network so that the drone performs the flight mission.

[0067] In the embodiment of the present invention, please continue to refer to the above Figure 1When the user needs to operate the control terminal 50 to make the drone 10 perform the corresponding flight mission, it is determined which relay base station 30 is connected to the drone 10. At the same time, the control terminal 50 generates a control instruction according to the user's operation and the position of the relay base station 30c connected to the drone 10 and packs it into a data packet and sends it to the ground base station 40. Then the ground base station 40 sends the data packet to the nearest relay base station 30a. The relay base station 30a sends the data packet to the relay base station 30c connected to the drone 10 through the relay base station link. The relay base station 30c connected to the drone 10 then sends the data packet to the drone 10. The drone 10 decodes the data packet, obtains the control instruction and executes it.

[0068] In some embodiments, see Figure 6 , which shows the process of another drone networking communication method provided by an embodiment of the present invention, the method also includes:

[0069] Step S50: Control the UAV to connect to the nearest relay base station and perform remote takeoff and landing.

[0070] In the embodiment of the present invention, the UAV does not need to take off from the location of the control terminal during the flight mission, but can take off from a location near any relay base station near the UAV to perform remote takeoff and landing. Figure 1 For example, when the drone 10 is near the relay base station 30b, the drone 10 can be controlled to perform a remote takeoff and landing near the relay base station 30b.

[0071] In some embodiments, see Figure 7 , which shows the process of another drone networking communication method provided by an embodiment of the present invention, the method also includes:

[0072] Step S61: obtaining a unique identifier of a relay base station connected to the drone to determine the location range of the drone;

[0073] Step S62: accurately locate the drone through a differential positioning module in a relay base station connected to the drone.

[0074] In an embodiment of the present invention, when it is necessary to obtain the location information of a drone, the unique identifier of the relay base station connected to the drone can be obtained to determine the location of the relay base station to which the drone is connected, as well as the location range of the drone; further, the drone can be accurately positioned through a differential positioning module in the relay base station connected to the drone, and the relative position of the drone and the relay base station or the absolute position in space can be determined.

[0075] In an embodiment of the present invention, a drone networking communication system and method are provided. The system includes a drone, a 4G base station, at least one relay base station, a ground base station and a control terminal. Each relay base station is provided with a 4G module with an Internet of Things card inserted therein. Each relay base station is connected to a 4G network via the 4G module. Each relay base station is connected to the 4G network via the 4G network. One relay base station is connected to only one drone via the 4G network to obtain multimedia data. The ground base station and the relay base station link that is closest to the ground base station are connected via the 4G network to obtain multimedia data. The control terminal is wirelessly connected to the ground base station to obtain multimedia data. Through the networking communication system and method provided in the embodiment of the present invention, the drone can expand the range of the self-organizing network to realize long-distance relay transmission, and has good scalability and a large coverage range.

[0076] It should be noted that the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0077] Through the description of the above implementation methods, ordinary technicians in this field can clearly understand that each implementation method can be implemented by means of software plus a general hardware platform, and of course, it can also be implemented by hardware. Ordinary technicians in this field can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drone networking communication system, characterized in that: include: A drone, configured to collect multimedia data; A 4G base station configured to provide a 4G network; At least one relay base station, each relay base station is provided with a 4G module with an Internet of Things card inserted therein, each relay base station is connected to the 4G network through the 4G module, wherein each relay base station is connected to each other through the 4G network, and one relay base station is connected to only one drone through the 4G network to obtain the multimedia data; A ground base station is connected to a relay base station closest to the ground base station in a relay base station link through the 4G network to obtain the multimedia data, wherein the relay base station link is a link composed of several relay base stations that realize communication connection between the drone and the ground base station; the ground base station is the base station closest to the control terminal, the ground base station can communicate with one or more of the relay base stations at the same time, and the ground base station also controls the switching of connections with different relay base station links; A control terminal is wirelessly connected to the ground base station to obtain the multimedia data; Each relay base station stores a unique identifier for determining the identity information of the relay base station; Each of the relay base stations is provided with a differential positioning module for locating the drone connected to the relay base station.

2. The UAV networking communication system according to claim 1, characterized in that: The system further comprises: The cloud server is communicatively connected with the control terminal and each of the relay base stations through the 4G network. The cloud server is configured to control the switch of each of the relay base stations in the relay base station link according to the flight mission and to exchange data with the control terminal.

3. The UAV networking communication system according to claim 1, characterized in that: Each of the relay base stations is provided with a rechargeable battery.

4. A drone networking communication method, characterized in that: Applied to the UAV networking communication system according to any one of claims 1 to 3, the UAV in the UAV networking communication system is connected to the relay base station via a 4G network, and the method comprises: Plan the flight route according to the flight mission and turn on each relay base station in the relay base station link through the 4G network; Collect multimedia data by the drone and transmit the multimedia data back to the control terminal through the 4G network in sequence through the relay base station link and the ground base station; Obtaining a unique identifier of a relay base station connected to the drone to determine the location range of the drone; The drone is accurately positioned through a differential positioning module in a relay base station connected to the drone.

5. The drone networking communication method according to claim 4, characterized in that: The step of enabling each relay base station in the relay base station link through the 4G network includes: Inserting an Internet of Things card into a 4G module of each relay base station constituting the relay base station link to activate each relay base station of the relay base station link; The cloud server sends an activation instruction to each relay base station in the relay base station link through the 4G network; Each relay base station in the relay base station link is turned on after receiving the turn-on instruction.

6. The UAV networking communication method according to claim 5, characterized in that: After each relay base station in the relay base station link is turned on through the 4G network, the method further includes: The relay base station link performs link self-check.

7. The UAV networking communication method according to any one of claims 4 to 6, characterized in that: The method of collecting multimedia data by the drone and transmitting the multimedia data back to the control terminal through the 4G network in sequence through the relay base station link and the ground base station includes: The drone routes the multimedia data to a relay base station connected to the drone through the 4G network; The relay base station connected to the drone routes the multimedia data to the relay base station closest to the ground base station through the relay base station link; The relay base station closest to the ground base station routes the multimedia data to the ground base station; The ground base station transmits the multimedia data back to the control terminal via a wireless communication connection.

8. The drone networking communication method according to any one of claims 4 to 6, characterized in that: The method further comprises: The control terminal obtains a control instruction from a user, and sends the control instruction to the ground base station via a wireless communication connection; The ground base station sends the control instruction to the relay base station closest to the ground base station in the relay base station link through the 4G network; The relay base station closest to the ground base station sends the control instruction to the relay base station connected to the drone through the 4G network; The relay base station connected to the drone sends the control instruction to the drone through the 4G network so that the drone performs a flight mission.

9. The UAV networking communication method according to claim 8, characterized in that: The method further comprises: The drone is controlled to connect to the nearest relay base station and perform remote takeoff and landing.

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