CN114237283A

CN114237283A - 5G safety communication method, 5G manned unmanned aerial vehicle and 5G ground station

Info

Publication number: CN114237283A
Application number: CN202111449013.3A
Authority: CN
Inventors: 胡华智; 王栋; 薛鹏
Original assignee: Guangzhou Ehang Intelligent Technology Co Ltd
Current assignee: Guangzhou Ehang Intelligent Technology Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-03-25

Abstract

The invention relates to the technical field of data communication, and particularly provides a 5G safety communication method, a 5G manned unmanned aerial vehicle and a 5G ground station, which comprise the following steps: the 5G ground station judges whether a condition for synchronizing a first reference signal generated by the 5G ground station and a second reference signal generated by the 5G manned unmanned aerial vehicle is met or not according to a preset rule, the 5G ground station sends a reference signal synchronization instruction to the 5G manned unmanned aerial vehicle under the condition that the synchronization condition is met, so that the 5G manned unmanned aerial vehicle can make the second reference signal synchronized with the first reference signal, the 5G ground station updates a key sequence of the 5G manned unmanned aerial vehicle, the 5G ground station communicates with the 5G manned unmanned aerial vehicle based on the first reference signal and the key sequence, and the 5G manned unmanned aerial vehicle communicates with the 5G ground station based on the second reference signal and the key sequence. The method synchronizes the reference signal of the 5G manned unmanned aerial vehicle with the reference signal of the 5G ground station regularly, thereby increasing the safety of communication data and preventing the 5G manned unmanned aerial vehicle from being hijacked, stealing the communication data and the like.

Description

5G safety communication method, 5G manned unmanned aerial vehicle and 5G ground station

Technical Field

The invention relates to the technical field of data communication, in particular to a 5G safety communication method, a 5G manned unmanned aerial vehicle and a 5G ground station.

Background

A manned drone is an aircraft that is not controlled by an onboard driver and carries non-driver passengers. When the manned unmanned aerial vehicle goes out to execute a task, the manned unmanned aerial vehicle needs to be constantly in communication connection with the ground station so as to facilitate data communication with the ground station, for example, the position of the manned unmanned aerial vehicle is fed back to the ground station, the task completion progress is reported to the ground station, and the like. In the process, in order to prevent other people from maliciously damaging, illegally controlling or stealing data transmission between the unmanned aerial vehicle and the ground station and avoid safety accidents of people in the manned unmanned aerial vehicle caused by the data transmission, the data transmission between the ground station and the manned unmanned aerial vehicle is encrypted.

The existing encryption mode is that a ground station and a manned unmanned aerial vehicle are communicated through a 4G signal network to generate a specific signal to obtain a specific key, and information is encrypted and decrypted according to the key, but the 4G signal network has very poor reliability and high requirement on environmental interference, and the risk that communication data is interfered and stolen still exists after the unmanned aerial vehicle is operated for a long time in the mode, so that the safety of data transmission between the manned unmanned aerial vehicle and the ground station needs to be improved.

Disclosure of Invention

Objects of the invention

In order to increase the stability, reliability and safety of data transmission between the manned unmanned aerial vehicle and the ground station and prevent other people from maliciously damaging, illegally controlling or stealing data transmission between the unmanned aerial vehicle and the ground station so as to avoid safety accidents of personnel in the manned unmanned aerial vehicle caused by the safety accidents.

(II) technical scheme

As a first aspect of the present invention, the present invention provides a 5G secure communication method applied to a 5G ground station that performs secure communication with a 5G manned unmanned aerial vehicle, the method including:

judging whether a condition for synchronizing a first reference signal generated by the 5G ground station and a second reference signal generated by the 5G manned unmanned aerial vehicle is met or not according to a preset rule;

under the condition that a synchronization condition is met, sending a reference signal synchronization instruction to the 5G manned unmanned aerial vehicle so that the 5G manned unmanned aerial vehicle can make the second reference signal be synchronized with the first reference signal;

after the reference signal synchronization is completed, updating a key sequence of the 5G manned unmanned aerial vehicle;

communicate with the 5G manned unmanned aerial vehicle based on the first reference signal and the key sequence; wherein the content of the first and second substances,

the first reference signal is generated based on a clock signal; the reference signal synchronization instruction specifies a reference signal synchronization mode; the key sequence is updated according to the number of times of synchronizing the reference signal between the 5G manned unmanned aerial vehicle and the 5G ground station or according to a set time period.

As a specific implementation manner of the above technical solution, the predetermined rule includes that the 5G manned unmanned aerial vehicle is trouble-free and the 5G manned unmanned aerial vehicle has completed a currently executed task, and further includes one of the following two items:

the 5G manned unmanned aerial vehicle is positioned in a signal synchronization area; or the like, or, alternatively,

the 5G manned unmanned aerial vehicle establishes communication connection with the 5G ground station through a set communication interface; wherein the content of the first and second substances,

the signal synchronization area is a set geographical area located in the 5G ground station.

As a second aspect of the present invention, the present invention also provides a 5G manned unmanned aerial vehicle 5G ground station, the 5G ground station including:

the condition judgment module is used for judging whether a condition for synchronizing the first reference signal and a second reference signal generated by the 5G manned unmanned aerial vehicle is met or not according to a preset rule;

the first transceiver module is used for sending a reference signal synchronization instruction to the 5G manned unmanned aerial vehicle under the condition that synchronization conditions are met, and is also used for sending a new key sequence to the 5G manned unmanned aerial vehicle after synchronization of the reference signal is completed;

the first synchronization module is used for enabling the 5G unmanned aerial vehicle to enable the second reference signal to be synchronized with the first reference signal according to the reference signal synchronization instruction received by the first transceiver module under the condition that the synchronization condition is met;

a first communication module for securely communicating with the 5G manned unmanned aerial vehicle based on the first reference signal and the key sequence; wherein the content of the first and second substances,

the first reference signal is generated based on a clock signal.

As a specific implementation manner of the above technical solution, the 5G ground station further includes:

a first signal generation module for generating a first reference signal;

the key sequence generating module is used for generating a key sequence; wherein the content of the first and second substances,

the first signal generation module comprises a first clock unit, and the first clock unit generates a clock signal; and the key sequence generation module generates a new key sequence according to the number of times of synchronizing reference signals between the 5G manned unmanned aerial vehicle and the 5G ground station or according to a set time period.

As a specific implementation manner of the foregoing technical solution, the condition determining module includes at least one of:

the fault judging unit is used for judging whether the 5G manned unmanned aerial vehicle has a fault or not;

the task judging unit is used for judging whether the 5G manned unmanned aerial vehicle completes the currently executed task or not;

the region judgment unit is used for judging whether the 5G manned unmanned aerial vehicle is located in a signal synchronization region;

the connection judging unit is used for judging whether the 5G manned unmanned aerial vehicle establishes communication connection with the 5G ground station through a set communication interface; wherein the content of the first and second substances,

As a third aspect of the present invention, the present invention further provides a 5G secure communication method applied to a 5G manned unmanned aerial vehicle that performs secure communication with a 5G ground station, the method including:

receiving a reference signal synchronization command sent by the 5G ground station;

enabling a second reference signal generated by the 5G manned unmanned aerial vehicle to be synchronous with a first reference signal generated by the 5G ground station according to the reference signal synchronization instruction;

receiving a key sequence sent by the 5G ground station;

communicating with the 5G ground station based on the second reference signal and the key sequence; wherein the content of the first and second substances,

the second reference signal is generated based on a clock signal; the reference signal synchronization instruction specifies a manner of reference signal synchronization.

As a specific implementation manner of the above technical solution, the synchronizing the second reference signal generated by the 5G manned unmanned aerial vehicle with the first reference signal generated by the 5G ground station according to the reference signal synchronization instruction includes:

synchronizing the second reference signal with the first reference signal according to the first reference signal;

according to the provision of the reference signal synchronization instruction, judging whether the second reference signal is synchronous with the first reference signal for multiple times within set time, and finishing the reference signal synchronization process under the condition that all the results of the multiple judgments are that the second reference signal and the first reference signal are in a synchronous state;

when the second reference signal and the first reference signal are not synchronized during the multiple judgments, stopping the current reference signal synchronization process and restarting the reference signal synchronization process; wherein the content of the first and second substances,

the reference signal synchronization command specifies a number of times of determining whether the second reference signal is synchronized with the first reference signal and a set time required for the plurality of times of determination.

As a fourth aspect of the present invention, the present invention also provides a 5G manned unmanned aerial vehicle, including:

the second transceiver module is used for receiving the reference signal synchronization command and the key sequence transmitted by the 5G ground station;

the second synchronization module is used for enabling a second reference signal generated by the 5G manned unmanned aerial vehicle to be synchronized with the first reference signal generated by the 5G ground station according to the reference signal synchronization instruction;

a second communication module to communicate with the 5G ground station based on the second reference signal and the key sequence; wherein the content of the first and second substances,

As a specific implementation of above-mentioned technical scheme, this manned unmanned aerial vehicle of 5G still includes:

a second signal generation module for generating a second reference signal; wherein the content of the first and second substances,

the second signal generation module includes a second clock unit that generates a clock signal.

As a specific implementation manner of the foregoing technical solution, the second synchronization module includes:

a second synchronization unit for synchronizing the second reference signal with the first reference signal according to the first reference signal;

a second judging unit, configured to judge whether the second reference signal is synchronized with the first reference signal multiple times within a set time according to a specification of the reference signal synchronization instruction, and complete a reference signal synchronization process when all results of the multiple judgments are that the second reference signal is synchronized with the first reference signal;

a second circulation unit, configured to terminate the current reference signal synchronization process and enable the second synchronization unit to restart the reference signal synchronization process when the second reference signal is not synchronized with the first reference signal when the second determination unit determines for multiple times; wherein the content of the first and second substances,

As a fifth aspect of the present invention, the present invention further provides a 5G secure communication method applied to secure communication between a 5G ground station and a 5G manned unmanned aerial vehicle, the method including:

the 5G ground station judges whether a condition for synchronizing a first reference signal generated by the 5G ground station and a second reference signal generated by the 5G manned unmanned aerial vehicle is met or not according to a preset rule;

under the condition that a synchronization condition is met, the 5G ground station sends a reference signal synchronization instruction to the 5G manned unmanned aerial vehicle, so that the 5G manned unmanned aerial vehicle synchronizes the second reference signal with the first reference signal;

the 5G ground station updates a key sequence of the 5G manned unmanned aerial vehicle;

the 5G ground station communicating with the 5G manned drone based on the first reference signal and the key sequence, the 5G manned drone communicating with the 5G ground station based on the second reference signal and the key sequence; wherein the content of the first and second substances,

the first reference signal is generated based on a clock signal generated by the 5G ground station, and the second reference signal is generated based on a clock signal generated by the 5G manned unmanned aerial vehicle; the reference signal synchronization instruction specifies a reference signal synchronization mode; the key sequence is updated according to the number of times of synchronizing the reference signal between the 5G manned unmanned aerial vehicle and the 5G ground station or according to a set time period.

As a specific implementation manner of the above technical solution, the synchronizing the second reference signal to the first reference signal by the 5G manned unmanned aerial vehicle includes:

the 5G manned unmanned aerial vehicle receives a reference signal synchronization instruction sent by the 5G ground station;

the 5G manned unmanned aerial vehicle synchronizes the second reference signal with the first reference signal according to the first reference signal;

the 5G manned unmanned aerial vehicle judges whether the second reference signal is synchronous with the first reference signal for multiple times within set time according to the regulation of the reference signal synchronization instruction, and completes the reference signal synchronization process under the condition that the results of the multiple judgments are that the second reference signal and the first reference signal are in a synchronous state;

As a sixth aspect of the present invention, the present invention further provides a 5G secure communication system, which is applied to secure communication between a 5G ground station and a 5G manned unmanned aerial vehicle, wherein the 5G secure communication system includes the 5G ground station and at least one 5G manned unmanned aerial vehicle;

the 5G ground station includes:

the first transceiver module is used for sending a reference signal synchronization instruction to the 5G manned unmanned aerial vehicle under the condition that synchronization conditions are met, and is also used for sending the key sequence generated by the key sequence generation module to the 5G manned unmanned aerial vehicle after the reference signal synchronization is finished;

a first communication module for securely communicating with the 5G manned unmanned aerial vehicle based on the first reference signal and the key sequence;

manned unmanned aerial vehicle of 5G includes:

a first signal generation module for generating a first reference signal;

the first signal generation module comprises a first clock unit, and the first clock unit generates a clock signal;

manned unmanned aerial vehicle of 5G still includes:

(III) advantageous effects

The 5G safe communication method, the 5G manned unmanned aerial vehicle and the 5G ground station provided by the invention have the following beneficial effects:

1. through 5G signal network communication, signal transmission's stability, reliability and remote response performance have been improved greatly, manned unmanned aerial vehicle's controllable scope has been improved.

2. The reference signal of the 5G manned unmanned aerial vehicle and the reference signal of the 5G ground station are synchronized regularly, so that the safety of communication data is improved, and the conditions that the 5G manned unmanned aerial vehicle is hijacked, the communication data is stolen and the like are prevented.

3. By regularly replacing the new key sequence, the randomness of the key is increased, and the decryptability of the communication data is greatly reduced.

4. By synchronizing the reference signals in the 5G ground station, the success rate of synchronization is improved, and the possibility of signal interference and stealing is avoided to a certain extent.

Drawings

The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining and illustrating the present invention and should not be construed as limiting the scope of the present invention.

Fig. 1 is a schematic flow chart of an embodiment of a 5G secure communication method applied to a 5G ground station for secure communication with a 5G manned unmanned aerial vehicle provided by the invention.

Fig. 2 is a block diagram of an embodiment of a 5G ground station provided by the present invention.

Fig. 3 is a schematic flow chart of an embodiment of a 5G secure communication method applied to a 5G manned unmanned aerial vehicle in secure communication with a 5G ground station, provided by the invention.

Fig. 4 is a block diagram of an embodiment of a 5G manned unmanned aerial vehicle provided by the invention.

Fig. 5 is a schematic flow chart of an embodiment of a 5G secure communication method applied between a 5G ground station and a 5G manned unmanned aerial vehicle provided by the invention.

Fig. 6 is a block diagram of an embodiment of a 5G secure communication system provided by the present invention.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention.

It should be noted that: in the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are some embodiments of the present invention, not all embodiments, and features in embodiments and embodiments in the present application may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In this document, "first", "second", and the like are used only for distinguishing one from another, and do not indicate their degree of importance, order, and the like.

The following is a first embodiment of a 5G secure communication method applied to a 5G ground station for secure communication with a 5G manned unmanned aerial vehicle according to the present invention. When the 5G manned unmanned aerial vehicle goes out to execute a task (for example, a tourist is carried to fly in a scenic spot and sightseeing), the 5G ground station needs to constantly keep communication connection with the 5G manned unmanned aerial vehicle so as to perform necessary encrypted data communication with the 5G manned unmanned aerial vehicle, for example, encrypted task content information is sent to the 5G manned unmanned aerial vehicle, and an instruction indicating the 5G manned unmanned aerial vehicle to fly is sent. In the process, in order to enhance the security of secret communication and further prevent other people from maliciously damaging, illegally controlling or stealing data transmission between the 5G manned unmanned aerial vehicle and the 5G ground station, the 5G ground station enables the 5G ground station and the 5G manned unmanned aerial vehicle to carry out signal synchronization under the set condition through the 5G secure communication method, and updates a key sequence, thereby increasing the security of communication data, preventing the 5G manned unmanned aerial vehicle from being hijacked, stealing the communication data and the like, and avoiding the safety accidents of people in the 5G manned unmanned aerial vehicle caused by the conditions. Fig. 1 is a schematic flow chart of this embodiment, and as shown in fig. 1, the steps of the 5G secure communication method are as follows:

and 110, judging whether a condition for synchronizing a first reference signal generated by the 5G ground station and a second reference signal generated by the 5G manned unmanned aerial vehicle is met by the 5G ground station according to a preset rule.

In the communication process, the 5G ground station generates a first reference signal in real time, the first reference signal is generated based on a clock signal generated by the 5G ground station and used for obtaining a secret key for encrypting and decrypting plaintext information, the 5G ground station decrypts ciphertext information sent by the 5G manned unmanned aerial vehicle through the secret key to obtain the plaintext information, and the plaintext information needing to be sent to the 5G manned unmanned aerial vehicle is encrypted through the secret key and then sent out.

In order to enable the key used by the 5G ground station in decrypting the ciphertext information to be the same as the key used by the 5G manned unmanned aerial vehicle in encrypting the ciphertext information previously, the first reference signal of the 5G ground station needs to be matched with the second reference signal of the 5G manned unmanned aerial vehicle, otherwise, the obtained keys are different, and the information cannot be decrypted correctly. Therefore, the first reference signal and the second reference signal need to be synchronized, and before synchronization, the 5G manned unmanned aerial vehicle needs to be ensured to meet the signal synchronization condition set by the preset rule.

As a specific embodiment of the above technical solution, the predetermined rule includes the following points:

firstly, the manned unmanned aerial vehicle of 5G does not have trouble. The 5G manned unmanned aerial vehicle has to be in the intact condition of equipment before the synchronization of reference signal can be carried out, otherwise should carry out equipment maintenance first.

Second, the 5G manned drone has completed the task currently being performed. In the process of executing the task, the 5G manned unmanned aerial vehicle is usually located in a certain airspace outside the 5G ground station and is in a flying state, and if reference signal synchronization is desired at this time, the 5G ground station and the unmanned aerial vehicle need to transmit and receive signals like daily communication to perform reference signal synchronization, which not only may cause reference signal synchronization failure, but also faces the risk that the reference signal is interfered and stolen, so that the 5G manned unmanned aerial vehicle needs to perform reference signal synchronization again in a non-task executing state.

Thirdly, the 5G manned unmanned aerial vehicle is located in the signal synchronization region, or the 5G manned unmanned aerial vehicle establishes communication connection with the 5G ground station through the communication interface who sets for, and both satisfy one kind can. For 5G manned unmanned aerial vehicle located in the signal synchronization area: the 5G manned unmanned aerial vehicle can get back to the 5G ground station after the task is executed, and the signal synchronization area is a set geographical area which is located in the 5G ground station, and the geographical area comprises a ground area and an air area. After the 5G manned unmanned aerial vehicle returns to the signal synchronization region in the 5G ground station, the distance between 5G manned unmanned aerial vehicle and the 5G ground station is greatly shortened when being out to execute the task at this moment, and the reference signal synchronization is carried out at this moment, so that the synchronization success rate can be improved, and the possibility that the signal is interfered and stolen is avoided to a certain extent. The 5G manned unmanned aerial vehicle is in communication connection with the 5G ground station through the set communication interface, after the 5G manned unmanned aerial vehicle performs tasks and returns, the 5G manned unmanned aerial vehicle can possibly land in other areas near the 5G ground station, such as an outdoor parking apron and the like, a wired interface can be arranged on the parking apron, the 5G manned unmanned aerial vehicle is connected with the wired interface on the parking apron through the built-in or external communication interface, the 5G manned unmanned aerial vehicle is communicated with the 5G ground station through the wired interface, a reference signal synchronization process is carried out, synchronization is carried out in a wired mode, the synchronization success rate can be improved, and the possibility that signals are interfered and stolen is avoided to a certain extent.

And 120, under the condition that the synchronization condition is met, the 5G ground station sends a reference signal synchronization instruction to the 5G manned unmanned aerial vehicle, so that the 5G manned unmanned aerial vehicle can make the second reference signal be synchronized with the first reference signal.

And after the 5G ground station judges that the 5G manned unmanned aerial vehicle meets the condition of the synchronous reference signal, sending a reference signal synchronous instruction to the 5G manned unmanned aerial vehicle so that the 5G manned unmanned aerial vehicle can make the second reference signal synchronous with the first reference signal. The reference signal synchronization command specifies a reference signal synchronization method, for example, which method is used to perform signal synchronization, and a determination of whether synchronization is to be confirmed several times during the same signal synchronization process. If the second reference signal and the first reference signal at the same time are the same, it indicates that the reference signals are synchronized.

And step 130, after the reference signal synchronization is completed, the 5G ground station updates the key sequence of the 5G manned unmanned aerial vehicle.

And after the 5G ground station judges that the reference signals are synchronous, a new key sequence is sent to the 5G manned unmanned aerial vehicle. The key sequence is a table in which a plurality of keys are stored in order according to some factors such as time. The 5G ground station and the 5G manned unmanned aerial vehicle encrypt and decrypt information by acquiring the key in the key sequence.

The inside storage of 5G ground satellite station has one or more different key sequence, and a key sequence can correspond a 5G manned unmanned aerial vehicle or many 5G manned unmanned aerial vehicles, even whole 5G manned unmanned aerial vehicle. When the 5G ground station decrypts the ciphertext information transmitted from the a135G manned drone, the key sequence corresponding to the a135G manned drone is used, and when the 5G ground station encrypts the information to be transmitted to the a275G manned drone, the key sequence corresponding to the a275G manned drone is used. Note that the key sequences corresponding to the a135G manned drone and the a275G manned drone may be the same key sequence.

The key sequence is updated according to the number of times of synchronizing the reference signal between the 5G manned unmanned aerial vehicle and the 5G ground station or according to a set time period. For example, each time the 5G manned drone completes a task and returns to the 5G ground station, an update of the key sequence is performed, i.e., a new key sequence is replaced, the new key sequence is used for secure communication when the task is performed next time, or, 11 pm every day: 00 to 13: between 00, at night 19: 00 to 21: between 00, a new key sequence is replaced for the 5G manned unmanned aerial vehicle. By replacing the new key sequence, the randomness of the key is increased, and the decryptability of the communication data is greatly reduced.

Step 140, the 5G ground station communicates with the 5G manned drone based on the first reference signal and the key sequence.

After the reference signals are synchronously completed and the new key sequence is updated, when the 5G manned unmanned aerial vehicle starts to execute the task again, the 5G ground station can use the first reference signal completely synchronous with the second reference signal to inquire in the new key sequence so as to obtain the key, further decrypt the information sent by the 5G manned unmanned aerial vehicle, encrypt the information needing to be sent to the 5G manned unmanned aerial vehicle and send the encrypted information.

The following is an embodiment of a 5G ground station of a 5G manned unmanned aerial vehicle, provided by the invention, which is a second embodiment. The 5G ground station provided in this embodiment is a 5G ground station implementing the 5G secure communication method provided in the first embodiment. This 5G ground satellite station carries out safety communication with 5G manned unmanned aerial vehicle, has increased the security of communication data, prevents that 5G manned unmanned aerial vehicle from being hijacked and communication data from being stolen the condition emergence such as. Fig. 2 is a structural block diagram of the present embodiment, and as shown in fig. 2, the 5G ground station includes a condition determining module, a first transceiver module, a first synchronization module, a first communication module, a first signal generating module, and a key sequence generating module.

The condition judgment module is used for judging whether a condition for synchronizing the first reference signal and a second reference signal generated by the 5G manned unmanned aerial vehicle is met according to a preset rule. Wherein the first reference signal is generated based on the clock signal. The condition judging module comprises one or more of a fault judging unit, a task judging unit, a region judging unit and a connection judging unit.

The fault judging unit is used for judging whether the 5G manned unmanned aerial vehicle has faults or not.

The task judging unit is used for judging whether the 5G manned unmanned aerial vehicle completes the currently executed task.

The region judgment unit is used for judging whether the 5G manned unmanned aerial vehicle is located in the signal synchronization region. The signal synchronization area is a set geographical area located in the 5G ground station.

The connection judging unit is used for judging whether the 5G manned unmanned aerial vehicle establishes communication connection with the 5G ground station through a set communication interface.

The first transceiver module is used for sending a reference signal synchronization instruction to the 5G manned unmanned aerial vehicle under the condition that synchronization conditions are met, and is also used for sending a new key sequence generated by the key sequence generation module to the 5G manned unmanned aerial vehicle after the reference signal synchronization is completed.

The first synchronization module is used for enabling the 5G manned unmanned aerial vehicle to enable the second reference signal to be synchronous with the first reference signal according to the reference signal synchronization instruction received by the first transceiver module under the condition that the synchronization condition is met.

The first signal generation module is used for generating a first reference signal. The first signal generation module includes a first clock unit that generates a clock signal.

The key sequence generation module is used for generating a key sequence. The key sequence generation module generates a new key sequence according to the number of times of synchronizing reference signals between the 5G manned unmanned aerial vehicle and the 5G ground station or according to a set time period.

The first communication module is used for safely communicating with the 5G manned unmanned aerial vehicle based on the first reference signal generated by the first signal generation module and the key sequence generated by the key sequence generation module.

The following is an embodiment of a 5G secure communication method applied to a 5G manned unmanned aerial vehicle performing secure communication with a 5G ground station, which is provided by the present invention and is a third embodiment. When the 5G manned unmanned aerial vehicle goes out to perform a task (for example, a tourist flies in a scenic spot and visits the sightseeing), the 5G manned unmanned aerial vehicle needs to constantly maintain a communication connection with the 5G ground station so as to perform necessary encrypted data communication with the 5G ground station, for example, encrypted task state information is fed back to the 5G ground station, and an encrypted command instruction sent by the 5G ground station is received. In the process, in order to enhance the security of confidential communication and further prevent other people from maliciously damaging, illegally controlling or stealing data transmission between the 5G manned unmanned aerial vehicle and the 5G ground station, the 5G manned unmanned aerial vehicle carries out secure communication with the 5G ground station through the 5G secure communication method, so that the security of communication data is improved, the 5G manned unmanned aerial vehicle is prevented from being hijacked, communication data is prevented from being stolen and the like, and the safety accidents of personnel in the 5G manned unmanned aerial vehicle caused by the conditions are avoided. Fig. 3 is a schematic flow chart of this embodiment, and as shown in fig. 3, the steps of the 5G secure communication method are as follows:

and step 210, receiving a reference signal synchronization command sent by the 5G ground station.

After the 5G ground station judges that the 5G manned unmanned aerial vehicle meets the condition of the synchronous reference signal, the 5G manned unmanned aerial vehicle sends a reference signal synchronous instruction to the 5G manned unmanned aerial vehicle, and the 5G manned unmanned aerial vehicle receives the reference signal synchronous instruction sent by the 5G ground station so as to enable the second reference signal to be synchronous to the first reference signal. The reference signal synchronization command specifies a reference signal synchronization method, for example, which method is used to perform signal synchronization, and a determination of whether synchronization is to be confirmed several times during the same signal synchronization process. If the second reference signal and the first reference signal at the same time are the same, it indicates that the reference signals are synchronized.

And step 220, synchronizing the second reference signal generated by the 5G manned unmanned aerial vehicle with the first reference signal generated by the 5G ground station according to the reference signal synchronization instruction.

In the communication process, the 5G manned unmanned aerial vehicle generates a second reference signal in real time, the second reference signal is generated based on a clock signal generated by the 5G manned unmanned aerial vehicle and is used for obtaining a secret key for encrypting plaintext information and decrypting ciphertext information, the 5G manned unmanned aerial vehicle decrypts the ciphertext information sent by the 5G ground station through the secret key to obtain plaintext information, and the plaintext information to be sent to the 5G ground station is encrypted through the secret key and then sent out.

As a specific implementation manner of the foregoing technical solution, the synchronizing the second reference signal generated by the 5G manned unmanned aerial vehicle with the first reference signal generated by the 5G ground station according to the reference signal synchronization instruction in step 220 includes the following steps:

step 221, receiving a reference signal synchronization command sent by the 5G ground station.

Step 222, synchronizing the second reference signal with the first reference signal.

Step 223, according to the provision of the reference signal synchronization instruction, determining whether the second reference signal is synchronized with the first reference signal for multiple times within a set time, for example, determining whether the second reference signal is synchronized with the first reference signal for 3 times within 100 milliseconds, and completing the reference signal synchronization process when all the results of the 3 times of determination indicate that the second reference signal and the first reference signal are in a synchronized state; in the process of 3 times of judgment, as long as 1 time of judgment result that the second reference signal is not synchronized with the first reference signal occurs, the current reference signal synchronization process is immediately stopped, and the reference signal synchronization process is restarted, namely, the reference signal synchronization instruction sent by the 5G ground station is received again, and then the second reference signal is synchronized with the first reference signal again. The reference signal synchronization command specifies the number of times of judging whether the second reference signal is synchronized with the first reference signal and the set time required by multiple times of judgment.

Step 230, receiving the key sequence from the 5G ground station.

After the signal synchronization is completed, the 5G ground station sends the updated key sequence, and the 5G manned unmanned aerial vehicle receives the new key sequence and takes the key sequence as an effective key sequence.

And step 240, communicating with the 5G ground station based on the second reference signal and the key sequence.

After the reference signals are synchronously completed and the new key sequence is updated, when the 5G manned unmanned aerial vehicle starts to execute a task again, the 5G manned unmanned aerial vehicle uses the second reference signal completely synchronous with the first reference signal to inquire in the new key sequence so as to obtain the key, and then decrypts the information sent by the 5G ground station, encrypts the information needing to be sent to the 5G ground station and sends the information.

The following is an embodiment of the 5G manned unmanned aerial vehicle provided by the invention, which is a fourth embodiment. The 5G manned unmanned aerial vehicle provided by the embodiment is a 5G manned unmanned aerial vehicle implementing the 5G secure communication method provided by the third embodiment. This manned unmanned aerial vehicle of 5G carries out safety communication with 5G ground satellite station, has increased the security of communication data, prevents that manned unmanned aerial vehicle of 5G from being hijacked and communication data from being stolen the condition emergence such as. Fig. 4 is a structural block diagram of this embodiment, and as shown in fig. 4, the 5G manned unmanned aerial vehicle 5G ground station includes a second transceiver module, a second synchronization module, a second communication module, and a second signal generation module.

The second transceiver module is used for receiving the reference signal synchronization command and the key sequence sent by the 5G ground station.

The second synchronization module is used for enabling a second reference signal generated by the 5G manned unmanned aerial vehicle to be synchronized with a first reference signal generated by the 5G ground station according to the reference signal synchronization instruction. Wherein the second reference signal is generated based on the clock signal. The reference signal synchronization command specifies the manner in which the reference signals are synchronized.

The second synchronization module comprises a second synchronization unit, a second judgment unit and a second circulation unit.

The second synchronization unit is used for synchronizing the second reference signal with the first reference signal according to the first reference signal.

The second judging unit is used for judging whether the second reference signal is synchronous with the first reference signal for multiple times within set time according to the regulation of the reference signal synchronization instruction, and finishing the reference signal synchronization process under the condition that all the results of the multiple judgments are that the second reference signal and the first reference signal are in a synchronous state.

The second circulation unit is used for stopping the current reference signal synchronization process and enabling the second synchronization unit to restart the reference signal synchronization process when the second reference signal is not synchronized with the first reference signal when the second judgment unit judges for multiple times. The reference signal synchronization command specifies the number of times of judging whether the second reference signal is synchronized with the first reference signal and the set time required by multiple times of judgment.

The second communication module is used for communicating with the 5G ground station based on the second reference signal and the key sequence.

The second signal generation module is used for generating a second reference signal. The second signal generation module comprises a second clock unit, and the second clock unit generates a clock signal.

The following is an embodiment of a 5G secure communication method applied to secure communication between a 5G ground station and a 5G manned unmanned aerial vehicle, which is a fifth embodiment. When the 5G manned unmanned aerial vehicle goes out to execute a task (for example, a tourist is born and flies in a scenic spot and visits the sightseeing), the 5G ground station needs to constantly keep communication connection with the 5G manned unmanned aerial vehicle so as to carry out necessary encrypted data communication with the 5G manned unmanned aerial vehicle, for example, encrypted task content information is sent to the 5G manned unmanned aerial vehicle, and an instruction indicating the 5G manned unmanned aerial vehicle to fly is sent. In the process, in order to enhance the security of secret communication and further prevent other people from maliciously damaging, illegally controlling or stealing data transmission between the 5G manned unmanned aerial vehicle and the 5G ground station, the 5G secure communication method is used for synchronizing signals between the 5G ground station and the 5G manned unmanned aerial vehicle under set conditions and updating a key sequence, so that the security of communication data is improved, the conditions that the 5G manned unmanned aerial vehicle is hijacked, the communication data is stolen and the like are prevented, and the safety accidents of people in the 5G manned unmanned aerial vehicle caused by the conditions are avoided. Fig. 5 is a schematic flowchart of this embodiment, and as shown in fig. 5, the steps of the 5G secure communication method are as follows:

and 310, judging whether a condition for synchronizing a first reference signal generated by the 5G ground station and a second reference signal generated by the 5G manned unmanned aerial vehicle is met by the 5G ground station according to a preset rule.

In the communication process, the 5G ground station generates a first reference signal in real time, the first reference signal is generated based on a clock signal generated by the 5G ground station, a secret key is obtained through the first reference signal, the 5G ground station decrypts ciphertext information sent by the 5G manned unmanned aerial vehicle through the secret key to obtain plaintext information, and the plaintext information needing to be sent to the 5G manned unmanned aerial vehicle is encrypted through the secret key and then sent out. In the communication process, the 5G manned unmanned aerial vehicle generates a second reference signal in real time, the second reference signal is generated based on a clock signal generated by the 5G manned unmanned aerial vehicle, a secret key is obtained through the second reference signal, the 5G manned unmanned aerial vehicle decrypts ciphertext information sent by the 5G ground station through the secret key to obtain plaintext information, and the plaintext information needing to be sent to the 5G ground station is encrypted through the secret key and then sent out.

And 320, under the condition that the synchronization condition is met, the 5G ground station sends a reference signal synchronization instruction to the 5G manned unmanned aerial vehicle, so that the 5G manned unmanned aerial vehicle can make the second reference signal be synchronized with the first reference signal.

The reference signal synchronization is controlled by the 5G ground station, so that the 5G ground station sends a reference signal synchronization instruction to the 5G manned unmanned aerial vehicle at a proper time, and after the 5G manned unmanned aerial vehicle receives the reference signal synchronization instruction, the reference signal synchronization process is started. Reference signal synchronization refers to: the first reference signal and the second reference signal are identical at the same time instant or within the same time interval. The reference signal synchronization command specifies a reference signal synchronization method, for example, which method is used to perform signal synchronization, and a determination of whether synchronization is to be confirmed several times during the same signal synchronization process. After determining that the first reference signal and the second reference signal are synchronized, the synchronization process of the reference signals ends. After the reference signals are synchronized, the first reference signal and the second reference signal can always keep the same as time goes on, so that the 5G manned unmanned aerial vehicle and the 5G ground station have the same signal in the same time point although the positions are different.

As a specific implementation manner of the above technical solution, the 5G manned unmanned aerial vehicle making the second reference signal synchronized with the first reference signal includes the following steps:

step 321, receiving a reference signal synchronization command sent by the 5G ground station.

Step 322, synchronizing the second reference signal with the first reference signal.

Step 323, according to the provision of the reference signal synchronization command, determining whether the second reference signal is synchronized with the first reference signal for multiple times within a set time, for example, determining whether the second reference signal is synchronized with the first reference signal for 3 times within 100 milliseconds, and completing the reference signal synchronization process when all the results of the 3 times of determination indicate that the second reference signal and the first reference signal are in a synchronized state; in the process of 3 times of judgment, as long as 1 time of judgment result that the second reference signal is not synchronized with the first reference signal occurs, the current reference signal synchronization process is immediately stopped, and the reference signal synchronization process is restarted, namely, the reference signal synchronization instruction sent by the 5G ground station is received again, and then the second reference signal is synchronized with the first reference signal again. The reference signal synchronization command specifies the number of times of judging whether the second reference signal is synchronized with the first reference signal and the set time required by multiple times of judgment.

And step 330, the 5G ground station updates the key sequence of the 5G manned unmanned aerial vehicle.

And after the 5G ground station judges that the reference signals are synchronous, a new key sequence is sent to the 5G manned unmanned aerial vehicle. The 5G manned drone accepts a new key sequence that is used as the only valid key sequence in the data transmission of the 5G manned drone and the 5G ground station.

The key sequence is a table in which a plurality of keys are stored in order according to some factors such as time. The 5G ground station and the 5G manned unmanned aerial vehicle encrypt and decrypt information by acquiring the key in the key sequence.

In step 340, the 5G ground station communicates with the 5G manned drone based on the first reference signal and the key sequence, and the 5G manned drone communicates with the 5G ground station based on the second reference signal and the key sequence.

After the reference signals are synchronously completed and the new key sequence is updated, when the 5G manned unmanned aerial vehicle starts to execute the task again, the 5G ground station can use the first reference signal completely synchronous with the second reference signal to inquire in the new key sequence so as to obtain the key, further decrypt the information sent by the 5G manned unmanned aerial vehicle, encrypt the information needing to be sent to the 5G manned unmanned aerial vehicle and send the encrypted information. And the 5G manned unmanned aerial vehicle can use the second reference signal which is completely synchronous with the first reference signal to inquire in the new key sequence so as to obtain the key, further decrypt the information sent by the 5G ground station, and encrypt and send the information which needs to be sent to the 5G ground station.

The following is an embodiment of a 5G secure communication system provided by the present invention, which is a sixth embodiment. The 5G secure communication system provided in this embodiment is a system that implements the 5G secure communication method provided in the fifth embodiment. Utilize this 5G safety communication system to carry out the safety communication of 5G manned unmanned aerial vehicle and 5G ground satellite station, increased the security of communication data, prevent that 5G manned unmanned aerial vehicle from being hijacked and communication data from being stolen the circumstances such as taking place. Fig. 6 is a block diagram of the structure of the present embodiment, and as shown in fig. 6, the 5G secure communication system includes a 5G ground station and at least one 5G manned unmanned aerial vehicle.

The 5G ground station comprises a condition judgment module, a first transceiver module, a first synchronization module, a first communication module, a first signal generation module and a key sequence generation module.

The condition judgment module is used for judging whether a condition for synchronizing the first reference signal and a second reference signal generated by the 5G manned unmanned aerial vehicle is met according to a preset rule. The condition judging module comprises a fault judging unit, a task judging unit, an area judging unit and a connection judging unit. The fault judging unit is used for judging whether the 5G manned unmanned aerial vehicle has faults or not. The task judging unit is used for judging whether the 5G manned unmanned aerial vehicle completes the currently executed task. The region judgment unit is used for judging whether the 5G manned unmanned aerial vehicle is located in the signal synchronization region. The signal synchronization area is a set geographical area located in the 5G ground station. The connection judging unit is used for judging whether the 5G manned unmanned aerial vehicle establishes communication connection with the 5G ground station through a set communication interface.

The first transceiver module is used for sending a reference signal synchronization instruction to the 5G manned unmanned aerial vehicle under the condition that synchronization conditions are met, and is also used for sending a key sequence generated by the key sequence generation module to the 5G manned unmanned aerial vehicle after the reference signal synchronization is completed.

The first synchronization module is used for enabling the 5G manned unmanned aerial vehicle to enable the second reference signal to be synchronous with the first reference signal according to the reference signal synchronization instruction received by the first transceiver module under the condition that the synchronization condition is met. The reference signal synchronization command specifies the manner in which the reference signals are synchronized.

The first communication module is used for safely communicating with the 5G manned unmanned aerial vehicle based on the first reference signal and the key sequence.

The first signal generation module is used for generating a first reference signal. The first signal generation module includes a first clock unit that generates a clock signal. The first reference signal is generated based on a clock signal generated by the 5G ground station.

The key sequence generation module is used for generating a key sequence. The key sequence is updated according to the number of times of synchronizing the reference signal between the 5G manned unmanned aerial vehicle and the 5G ground station or according to a set time period.

The 5G manned unmanned aerial vehicle comprises a second transceiver module, a second synchronization module, a second communication module and a second signal generation module.

The second synchronization module is used for enabling a second reference signal generated by the 5G manned unmanned aerial vehicle to be synchronized with a first reference signal generated by the 5G ground station according to the reference signal synchronization instruction. The second synchronization module comprises a second synchronization unit, a second judgment unit and a second circulation unit. The second synchronization unit is used for synchronizing the second reference signal with the first reference signal according to the first reference signal. The second judging unit is used for judging whether the second reference signal is synchronous with the first reference signal for multiple times within set time according to the regulation of the reference signal synchronization instruction, and finishing the reference signal synchronization process under the condition that all the results of the multiple judgments are that the second reference signal and the first reference signal are in a synchronous state. The second circulation unit is used for stopping the current reference signal synchronization process and enabling the second synchronization unit to restart the reference signal synchronization process when the second reference signal is not synchronized with the first reference signal when the second judgment unit judges for multiple times. The reference signal synchronization command specifies the number of times of judging whether the second reference signal is synchronized with the first reference signal and the set time required by multiple times of judgment.

The second signal generation module is used for generating a second reference signal. The second signal generation module includes a second clock unit that generates a clock signal. The second reference signal is generated based on a clock signal generated by the 5G manned drone.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A5G safety communication method is applied to a 5G ground station which is in safety communication with a 5G manned unmanned aerial vehicle, and is characterized by comprising the following steps:

2. The 5G secure communication method of claim 1, wherein the predetermined rules include that the 5G manned drone is not malfunctioning and the 5G manned drone has completed a currently executed task, further comprising one of:

3. The utility model provides a 5G ground station for with manned unmanned aerial vehicle safety communication of 5G, its characterized in that, this 5G ground station includes:

the first reference signal is generated based on a clock signal.

4. The 5G ground station of claim 3, wherein the condition determining module comprises at least one of:

5. A5G safety communication method is applied to a 5G manned unmanned aerial vehicle which carries out safety communication with a 5G ground station, and is characterized by comprising the following steps:

receiving a key sequence sent by the 5G ground station;

6. The 5G secure communication method of claim 5, wherein the synchronizing the second reference signal generated by the 5G manned unmanned aerial vehicle to the first reference signal generated by the 5G ground station according to the reference signal synchronization instruction comprises:

7. The utility model provides a manned unmanned aerial vehicle of 5G which characterized in that includes:

the second transceiver module is used for receiving a reference signal synchronization command and a key sequence sent by the 5G ground station;

8. The 5G manned unmanned aerial vehicle of claim 7, wherein the second synchronization module comprises:

9. A5G safety communication method is applied to safety communication between a 5G ground station and a 5G manned unmanned aerial vehicle, and is characterized by comprising the following steps:

under the condition that a synchronization condition is met, the ground 5G face station sends a 5G reference signal synchronization instruction to the 5G manned unmanned aerial vehicle, so that the 5G manned unmanned aerial vehicle makes the second reference signal synchronized with the first reference signal;

10. The 5G secure communication method of claim 9, wherein the predetermined rules include that the 5G manned drone is not malfunctioning and the 5G manned drone has completed a currently executed task, further comprising one of:

the 5G manned unmanned aerial vehicle establishes 5G communication connection with the 5G ground station through a set 5G communication interface; wherein the content of the first and second substances,

the signal synchronization area is a set geographical area located in the 5G ground station;

wherein synchronizing the second reference signal to the first reference signal by the 5G manned drone comprises: