KR102128060B1 - Flight route determining aircraft and method thereof using communication stable information - Google Patents

Abstract

The present invention is to control the aircraft by using a mobile communication network in order to prevent the problem that the aircraft does not reach the destination by falling or flying in the wrong flight path when control of the vehicle becomes impossible through a control command during the flight of the vehicle At this time, it is an object of the present invention to provide a vehicle and a method capable of safely flying to a destination by setting a flight path to an area having good communication stability using a communication stability state of a mobile communication network. To this end, the communication stability information of the mobile communication company is received or stored, the flight status information is generated, the flight status information is analyzed to identify the current flight space, and the communication stability of the current flight space is determined to determine the current flight space. Provided is a vehicle that sets a flight path using communication stability information that sets a flight path to a space in which the communication stability is stable when communication stability is unstable.

Description

Flight route determining aircraft and method thereof using communication stable information}

The present invention relates to a vehicle and a method for establishing a flight path using communication stability information, and more specifically, to set a flight path having good communication sensitivity using communication stability information of a mobile communication network, thereby disconnecting control information of the vehicle. It relates to a vehicle and a method of establishing a flight path to prevent it.

Recently, as the demand for drones such as drones is expected to increase explosively, it is urgently required to develop a high-reliability/security communication and safe navigation system for aircrafts prior to full-scale supply/utilization.

In the case of small unmanned aerial vehicles, it is difficult to use CNPC (control/non-payload communication: a communication system where the remote control station controls the unmanned aerial vehicle and receives the current status) used in medium and large unmanned aerial vehicles due to restrictions on available frequency, payload, and bandwidth. Therefore, it has recently been proposed to utilize communication such as LTE or 5G, which will be developed in the future, in a small unmanned aerial vehicle.

When using LTE or 5G, there is no need to construct a separate frequency and communication system, and it is easy to identify and monitor the UAV. Therefore, research on the development of specific implementation methods and element technologies suitable for UAV is required.

Currently, UAV communication uses the short-range (2.4Ghz-5.8Ghz) communication method, which is an unlicensed ISM band, and the output of the domestic short-range communication method is limited to 10mw, so UAV communication is possible only at a short range (up to 2KM) and long distance It has a limitation in which communication is impossible.

A recent survey of 152 drone operations worldwide by the RMIT University Aviation Research Institute in Australia revealed that the majority of drone accidents are faulty drone control equipment, including data link failures, the most likely cause of which is a loss of control communications or GPS. Communication is broken.

In the future, it is time to develop a stable unmanned communication system suitable for the case of using LTE or 5G communication network and to develop a solution to safely arrive at the mission point when the communication network is lost during unmanned flight.

Republic of Korea Patent Publication No. 10-2017-0099094 (Drones capable of connecting heterogeneous communication with ground control equipment and control method thereof)

The present invention is to control the aircraft by using a mobile communication network in order to prevent the problem that the aircraft does not reach the destination by falling or flying in the wrong flight path when control of the vehicle becomes impossible through a control command during the flight of the vehicle At this time, it is an object of the present invention to provide a vehicle and a method capable of safely flying to a destination by setting a flight path to an area having good communication stability using a communication stability state of a mobile communication network.

The present invention receives or stores communication stability information of a mobile communication company, generates flight status information, analyzes the flight status information, identifies a current flight space, determines communication stability of the current flight space, and determines the communication stability of the current flight space. Provided is a vehicle that sets a flight path using communication stability information that sets a flight path to a space in which the communication stability is stable when communication stability is unstable.

Here, the communication stability information may be characterized in that it includes communication traffic information and communication sensitivity information of a mobile communication company in a region where a corresponding mobile communication company provides a service.

Here, a communication unit for communicating with the mobile communication company to receive the communication stability information; and a flight status information generating unit for generating flight status information including information about the current flight status of the vehicle; and analyzing the communication stability information A flight space class setting unit for setting a flight space class according to the communication status of the flight space; and a flight space identification unit for analyzing the flight status information to identify the current flight space of the vehicle; And a controller configured to set a flight path by selecting a flight space having a better communication state from the current flight space and a neighboring flight space based on the current flight space based on the current flight space. have.

Here, the controller may be characterized by analyzing the communication state of the communication packet with the mobile communication network and optimizing the communication packet for performing communication with the mobile communication network using a learning algorithm.

Here, the learning algorithm may be characterized by optimizing the flow of the communication packet by predicting congestion by continuously changing the TCP parameter of the communication packet.

Here, the learning algorithm may be characterized by maximizing throughput by optimizing TCP/IP when communication packet loss is severe or the latency change is severe.

Here, the learning algorithm may be characterized by continuously checking the round trip time (RTT) to avoid the congestion by adjusting the packet rate in the case of congestion.

In addition, receiving the communication stability information from the mobile communication network; and analyzing the communication stability information to set the flight space class to set the flight space class by classifying the communication status of the flight space; and generating flight status information Step; And the step of analyzing the flight status information to identify the flight space that the vehicle is currently flying; And using the flight space class, setting a flight path such that a next flight path of the vehicle based on the flight space includes a flight space class having better communication status among current flight spaces and neighboring flight spaces. It provides a method for setting the flight path using the communication stability information including.

Here, analyzing the communication state of the communication packet with the mobile communication network and optimizing the communication packet for performing communication with the mobile communication network using a learning algorithm may be characterized in that it further comprises a.

Here, the learning algorithm may be characterized by optimizing the flow of the communication packet by predicting congestion by continuously changing the TCP parameter of the communication packet.

Here, the learning algorithm may be characterized by maximizing throughput by optimizing TCP/IP when communication packet loss is severe or the latency change is severe.

Here, the learning algorithm may be characterized by continuously checking the round trip time (RTT) to avoid the congestion by adjusting the packet rate in the case of congestion.

Since the present invention sets the flight path to a place where communication stability is good, there is an effect that the control of the vehicle can be seamlessly performed even in an invisible area.

In addition, the present invention has the effect that it is possible to optimize the communication packet so that communication is not disconnected, so that control of the vehicle can be performed even in a region where communication stability is poor.

1 is a view showing the configuration of the aircraft of the present invention.
FIG. 2 is a diagram illustrating a method for setting a flight path to a flight space having a better communication state among a current flight space and a neighboring flight space when setting a flight path according to an embodiment of the present invention.
3 is a view showing a method for setting a flight path using communication stability information as an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms.

In the present specification, this embodiment is provided to complete the disclosure of the present invention, and to fully inform the scope of the invention to those skilled in the art to which the present invention pertains.

And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described in order to avoid obscuring the present invention.

In addition, the same reference numerals throughout the specification refer to the same components, and the terms used (referred to) in this specification are for describing the embodiments and are not intended to limit the present invention.

In the present specification, the singular form also includes the plural form unless specifically stated in the phrase, and the components and operations referred to as'comprising (or, provided)' do not exclude the presence or addition of one or more other components and operations. .

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings commonly understood by those skilled in the art to which the present invention pertains.

In addition, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless they are defined.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a view showing the configuration of the aircraft of the present invention.

In the present invention, the vehicle 100 may be controllable through a mobile communication network as well as controllable using an unlicensed radio frequency band.

Hereinafter, it will mainly be described to control the vehicle through a mobile communication network such as LTE (Long Term Evolution) or 4G/5G.

The vehicle 100 that sets the flight path using the communication stability information of the present invention includes a communication unit 110, a flight status information generating unit 120, a flight space class setting unit 130, a flight space identification unit 140, and It includes a control unit 150.

The communication unit 110 communicates with a mobile communication company to receive communication stability information.

Here, a mobile communication company means a service provider that provides a mobile communication service. Mobile communication service means a service that provides a communication method through CDMA, LTE, and 4G/5G services.

Communication stability information refers to information that enables communication to be performed stably within a mobile communication network, including communication traffic information and communication sensitivity information of a mobile communication company in a region where a mobile communication service provider provides a service.

For example, the radio frequency is stronger in an area near the base station, so the sensitivity is better than in an area far from the base station. In addition, even in a region close to a base station, communication traffic may increase because the number of communication terminals performing communication with the base station increases.

Therefore, the communication stability information should be determined in consideration of both communication sensitivity information as well as communication sensitivity information.

Although the communication unit 110 of the present invention is described as performing communication through a mobile communication network, ground control is performed using a short-range (2.4Ghz-5.8Ghz) wireless communication method, which is an unlicensed ISM band, which is a control communication area of a general unmanned air vehicle. Communication with the center (GCS: Ground Control Station) is also possible.

The flight status information generating unit 120 generates flight status information including information about the current flight status of the vehicle 100, where the flight status information is a vehicle such as the location, altitude, speed, and direction of the vehicle ( 100) means information that can determine the current flight condition and the predicted flight path.

To this end, the flight status information generating unit 120 may include various sensors.

Here, when the flight status information generating unit 120 includes a camera, the flight status information may further include surrounding image information of the vehicle.

The flight space class setting unit 130 analyzes communication stability information and sets a flight space class according to the communication state of the flight space.

Here, the communication state of the flight space means a state in which communication is performed well when communicating with a mobile communication company. That is, it means the sensitivity status information on whether the communication sensitivity is good or bad and the status on whether the communication traffic is low or high.

The flight space identification unit 140 analyzes flight status information to identify the current flight space of the vehicle 100.

As described above, the flight status information includes information on the position, altitude, speed, and direction of the vehicle, and when analyzing the flight status information, it is possible to predict the current location of the vehicle 100 and the location of moving forward. have.

In addition, when the flight status information includes the surrounding image information of the vehicle, it is possible to know the current flight space including the location and altitude information of the flying vehicle by analyzing the image around the vehicle.

The control unit 150 sets a flight path by selecting a flight space having the better communication state from the current flight space and the neighboring flight spaces for the next flight path of the vehicle based on the current flight space.

Here, the controller 150 may analyze a communication state of the communication packet with the mobile communication network and optimize a communication packet that performs communication with the mobile communication network using a learning algorithm.

That is, the control unit 150 records the communication history with the mobile communication network, analyzes the big data, or changes the communication packet state for each communication process to change the communication algorithm so that optimal communication can be performed. Through this process, the controller 150 generates an algorithm for optimizing a communication packet state that can maintain an optimal communication state even when communication sensitivity or communication traffic changes, and applies it according to the communication state.

Here, the controller 150 predicts congestion through a learning algorithm that continuously changes a Transmission Control Protocol (TCP) parameter of a communication packet that performs communication with a mobile communication network, and to avoid congestion The flow of communication packets can be optimized.

In addition, the control unit 150 may secure a communication stability in a mobile communication network by performing a learning algorithm that optimizes TCP/IP to maximize throughput when communication packet loss is severe or the latency change is severe.

In addition, the controller 150 continuously checks the round trip time (RTT) of the communication packet to adjust the packet rate in the case of congestion to perform a learning algorithm to avoid congestion to secure communication stability in the mobile communication network. You may.

FIG. 2 is a diagram illustrating a method of setting a flight path to a flight space having a better communication state among current flight spaces and neighboring flight spaces when setting a flight path according to an embodiment of the present invention.

In FIG. 2, the flight space of the vehicle is divided into 16 spaces, and the flight space class is represented by three classes: A, B, and C.

Here, the class of the flight space is set to A for the space with the best communication status, B to the intermediate communication status, and C for the space with poor communication status.

In FIG. 2, S denotes the starting point of the vehicle 100.

When the aircraft 100 departs from the origin S, the next flight space moves from the origin S, which is the current location of the aircraft 100, to flight space 13, which has the best communication status, among the surrounding flight spaces as described above. do. Then, the aircraft selects the current flight space, flight space No. 13 and neighboring flight spaces, flight space No. 9 and flight space 14, which have better communication status, and set flight path No. 14 as the next flight path. .

The vehicle 100 moved to flight space 14 moves by setting the flight path to flight space 10 by selecting flight space 10, which is a better communication space among neighboring flight spaces 10 and 15. do.

The vehicle 100 that has moved to the flight space 10 moves to the flight space 11 by selecting the flight space No. 11, which has better communication status, from the neighboring flight spaces No. 6, No. 9, and No. 11 flight spaces. Set the path and go.

The vehicle 100 moved to the 11th flight space and selected the 12th flight space, which has better communication status, from the neighboring 7th flight space, the 12th flight space, and the 15th flight space to fly to the 12th flight space. Set the path and go.

The aircraft 100 moved to flight space 12 moves by setting flight path to flight space 8 by selecting flight space 8, which is a better communication space among neighboring flight spaces 8 and 16. do.

The vehicle 100 moved to flight space 8 moves by setting the flight path to flight space 4 by selecting flight space 4, which is a better communication space among neighboring flight spaces 4 and 7 do.

The vehicle 100 moved to the flight space 4 and then moves by setting a flight path to the destination D.

As described above, the final flight path of the moved vehicle is the origin (S)->13 flight space->14 flight space->10 flight space->11 flight space->12 flight space->8 flight Flight Space->4 Flight Space->Destination (D).

The vehicle that sets the flight path using the communication stability information of the present invention allows the flight path to be set in an area with high communication stability, so that the flight path is set so that the communication control signal is not broken, so that the flight can be safely performed to the destination. have.

3 is a view showing a method for setting a flight path using communication stability information as an embodiment of the present invention.

Step S100 is a step of receiving communication stability information from the mobile communication network. Here, the communication stability information may be received from the mobile communication network server as described above, or the aircraft 100 may store communication stability information of a corresponding communication company.

When the vehicle 100 receives communication stability information from the mobile carrier server, the vehicle 100 receives it through the base station of the mobile carrier belonging to the flight space where the vehicle 100 has moved.

When the vehicle 100 receives communication stability information from the mobile communication company server, communication stability information of the flight space and the surrounding flight space in which the corresponding vehicle 100 is flying is updated whenever the communication stability information is received. The rating is newly set.

Step S200 is a step of setting a flight space class by analyzing communication stability information.

As described above, the class of the flight space analyzes communication stability information and sets the class according to the communication status of the flight space.

Here, the communication stability information includes information on communication sensitivity and communication traffic in a region where the base station is installed, and information on communication sensitivity and communication traffic in a region where the base station is not installed, considering the location of the base station of the mobile operator. have.

Therefore, by analyzing the communication stability information, it is possible to know the communication state of the flight space in which the vehicle 100 is flying.

In step S300, the vehicle 100 generates information about the current flight status of the vehicle using various sensors.

That is, it includes information on GPS location information, altitude information, moving direction information, angular velocity, linear velocity, wind speed, temperature, etc. of the vehicle.

Here, when the vehicle 100 includes a camera, it may further include image information around the flight space of the vehicle 100.

Step S400 is a step of analyzing the flight status information to identify the flight space where the vehicle is currently flying.

As described above, the flight status information includes GPS location information of the vehicle 100, altitude, traveling direction, speed, wind speed, and temperature information.

Therefore, by analyzing the flight status information, it is possible to predict the current flight space and the next movement path of the vehicle.

In addition, when the camera is included in the vehicle 100, the image information around the vehicle is obtained from the camera and the image information around the vehicle is analyzed to determine the current flight space of the vehicle.

In step S500, the next flight path of the vehicle based on the flight space by using the flight space class according to the communication state is within the flight space having a better communication state (ie, a high communication stability class) among the current flight space and the neighboring flight spaces. It is the step to set the flight path in

Step S600 is a step of determining whether the vehicle has arrived at the destination through the above steps,

When the vehicle has arrived at the destination (D), all steps are ended, and when the vehicle has not arrived at the destination (D), the following steps are repeatedly performed from the above step S300.

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be implemented by anyone having ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, it is obvious that such changes are within the scope of the claims.

100: aircraft
110: communication unit
120: flight status information generation unit
130: flight space class setting unit
140: flight space identification unit
150: control unit

Claims (12)

Receiving or storing communication stability information of a mobile carrier, generating flight status information, analyzing the flight status information to identify a current flight space, and determining communication stability of the current flight space to determine communication stability of the current flight space. By setting the flight path to a space in which the communication stability is stable when unstable,
A communication unit performing communication with the mobile communication company to receive the communication stability information;
A flight status information generating unit for generating flight status information including information about a current flight status of the vehicle;
A flight space class setting unit that analyzes the communication stability information and sets a flight space class according to the communication state of the flight space;
A flight space identification unit that analyzes the flight status information to identify a current flight space of a vehicle; And
A control unit for setting a flight path by selecting a flight space having better communication status from the current flight space and a neighboring flight space based on the current flight space;
Air vehicle for setting a flight path using the communication stability information, characterized in that it comprises a. The method according to claim 1,
The communication stability information includes a communication traffic information, communication sensitivity information of the mobile communication service provider in the area where the mobile communication service provider provides a flight path to set the flight path using the communication stability information.
delete The method according to claim 1,
The control unit analyzes the communication state of a communication packet with a mobile communication network and sets a flight path using communication stability information characterized by optimizing the communication packet performing communication with the mobile communication network using a learning algorithm. Aircraft.
The method according to claim 4,
The learning algorithm predicts congestion by continuously changing the TCP parameter of the communication packet, and sets a flight path using communication stability information characterized by optimizing the flow of the communication packet.
The method according to claim 4,
The learning algorithm is a vehicle that sets a flight path using communication stability information characterized by maximizing throughput by optimizing TCP/IP when communication packet loss is severe or the latency change is severe.
The method according to claim 4,
The learning algorithm continuously checks the Round Trip Time (RTT) to adjust the packet rate in the case of congestion to adjust the packet rate to set the flight path using communication stability information characterized in that it avoids the congestion.
Receiving communication stability information from a mobile communication network;
Analyzing the communication stability information and setting a flight space class for classifying the communication status of the flight space and setting a flight space class;
Generating flight status information;
Analyzing the flight status information to identify a flight space in which the vehicle is currently flying; And
Setting a flight path so that a next flight path of the vehicle based on the flight space is set to include a flight space class having a better communication status among current flight spaces and neighboring flight spaces using the flight space class;
How to set the flight path using the communication stability information including.
The method according to claim 8,
Analyzing a communication state of a communication packet with the mobile communication network and optimizing the communication packet for performing communication with the mobile communication network using a learning algorithm;
Method for setting a flight path using the communication stability information, characterized in that it further comprises.
The method according to claim 9,
The learning algorithm is a method of establishing a flight path using communication stability information, characterized by optimizing the flow of the communication packet and predicting congestion by continuously changing the TCP parameter of the communication packet.
The method according to claim 9,
The learning algorithm is a method of establishing a flight path using communication stability information characterized by maximizing throughput by optimizing TCP/IP when communication packet loss is severe or latency changes are severe.
The method according to claim 9,
The learning algorithm is a method of establishing a flight path using communication stability information, characterized in that, by continuously checking the round trip time (RTT) and adjusting the packet rate in the case of congestion, the congestion is avoided.

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