CN116321338A - Communication control method and device between unmanned aerial vehicle and base station and electronic equipment - Google Patents

Communication control method and device between unmanned aerial vehicle and base station and electronic equipment Download PDF

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Publication number
CN116321338A
CN116321338A CN202310382933.0A CN202310382933A CN116321338A CN 116321338 A CN116321338 A CN 116321338A CN 202310382933 A CN202310382933 A CN 202310382933A CN 116321338 A CN116321338 A CN 116321338A
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base station
unmanned aerial
aerial vehicle
target
frequency band
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CN116321338B (en
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张晋华
王浩
杨皓宇
许鹏鹏
崔灿
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Beijing Yuandu Internet Technology Co ltd
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Beijing Yuandu Internet Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/165—Performing reselection for specific purposes for reducing network power consumption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application provides a communication control method, a device and electronic equipment between unmanned aerial vehicle and base stations, the working frequency band of each unmanned aerial vehicle is different, the working frequency band of each base station is the same, and the working frequency band of each base station comprises the working frequency band of each unmanned aerial vehicle, the method is executed by a dispatching station in communication connection with each base station, and the method comprises the following steps: acquiring the signal connection quality of a downlink frequency band from the target unmanned aerial vehicle to each base station, and selecting a target base station based on the signal connection quality; and opening the uplink frequency range from the target base station to the target unmanned aerial vehicle, closing the uplink frequency range from other base stations to the target unmanned aerial vehicle, and providing uplink communication service for the target unmanned aerial vehicle by the target base station. According to the method and the system for switching the target unmanned aerial vehicle, the communication quality of the target unmanned aerial vehicle is guaranteed, and meanwhile, when the target unmanned aerial vehicle roams between the base stations, the target unmanned aerial vehicle can be switched to the target base station providing the uplink communication service without interruption, and communication interruption of the target unmanned aerial vehicle during base station switching is avoided.

Description

Communication control method and device between unmanned aerial vehicle and base station and electronic equipment
Technical Field
The application relates to the field of unmanned aerial vehicles, in particular to a communication control method and device between an unmanned aerial vehicle and a base station and electronic equipment.
Background
In the unmanned aerial vehicle field, can extend unmanned aerial vehicle's communication range through setting up the mode of a plurality of basic stations. In the related art, when a plurality of unmanned aerial vehicles communicate with a plurality of base stations, the plurality of unmanned aerial vehicles send data to the base stations simultaneously and have interference, and the plurality of base stations upload data to the unmanned aerial vehicles simultaneously and have interference; moreover, since the location of the base station is usually fixed, the unmanned aerial vehicle needs to switch between different base stations in a roaming manner during the flight, and in the related art, when the unmanned aerial vehicle switches the base stations, short communication interruption of the unmanned aerial vehicle is inevitably caused.
Disclosure of Invention
An object of the present application is to provide a communication control method, an apparatus, and an electronic device between an unmanned aerial vehicle and a base station, which can avoid mutual interference caused by a plurality of unmanned aerial vehicles simultaneously transmitting data to the base station, and avoid mutual interference caused by a plurality of base stations simultaneously uploading data to the unmanned aerial vehicle, and ensure communication quality of a target unmanned aerial vehicle, so that the target unmanned aerial vehicle can switch to a target base station providing an uplink communication service without interruption when roaming between base stations, thereby avoiding occurrence of communication interruption when the target unmanned aerial vehicle switches the base stations.
According to an aspect of the embodiments of the present application, a communication control method between an unmanned aerial vehicle and a base station is disclosed, an operation frequency band of each unmanned aerial vehicle is different, an operation frequency band of each base station is the same, and the operation frequency band of each base station includes the operation frequency band of each unmanned aerial vehicle, the method is performed by a scheduling station communicatively connected with each base station, the method includes:
determining a downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station;
acquiring signal connection quality of the target unmanned aerial vehicle to the downlink frequency band of each base station according to the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station, and selecting a target base station based on the signal connection quality;
and starting the uplink frequency range from the target base station to the target unmanned aerial vehicle, closing the uplink frequency range from other base stations to the target unmanned aerial vehicle, and providing uplink communication service for the target unmanned aerial vehicle by the target base station.
According to an aspect of the embodiments of the present application, a communication control device between an unmanned aerial vehicle and a base station is disclosed, the working frequency band of each unmanned aerial vehicle is different, the working frequency band of each base station is the same, and the working frequency band of each base station includes the working frequency band of each unmanned aerial vehicle, the device is located the dispatch station with each base station communication connection, the device includes:
The frequency band determining module is configured to determine a downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station;
the base station selection module is configured to acquire signal connection quality of the target unmanned aerial vehicle to the downlink frequency band of each base station according to the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station, and select the target base station based on the signal connection quality;
and the uplink frequency band switching module is configured to start the uplink frequency band from the target base station to the target unmanned aerial vehicle, close the uplink frequency band from other base stations to the target unmanned aerial vehicle, and provide uplink communication service for the target unmanned aerial vehicle by the target base station.
In an exemplary embodiment of the present application, the upstream frequency band switch module is configured to:
and starting an uplink frequency band of which the frequency range is the same as the downlink frequency band of the target unmanned aerial vehicle in the target base station.
In an exemplary embodiment of the present application, the base station selection module is configured to:
acquiring a signal-to-noise ratio, a signal strength and a packet loss rate of the downlink frequency band from the target unmanned aerial vehicle to each base station according to the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station;
and calculating the signal connection quality according to weights respectively distributed to the signal-to-noise ratio, the signal strength and the packet loss rate.
In an exemplary embodiment of the present application, the base station selection module is configured to:
and selecting the base station with the highest signal connection quality as the target base station.
In an exemplary embodiment of the present application, the base station selection module is configured to:
predicting the signal connection quality for a future time period based on the signal connection quality for a historical time period and the signal connection quality for a current time;
and selecting the target base station based on the signal connection quality at the current moment and the signal connection quality of the future time period.
In an exemplary embodiment of the present application, the base station selection module is configured to:
screening out base stations of which the signal connection quality at the current moment is not lower than a preset signal connection quality threshold value and the signal connection quality in a future time period is not lower than the signal connection quality threshold value all the time, and obtaining candidate base stations;
and acquiring the comprehensive signal connection quality of each candidate base station based on the signal connection quality at the current moment and the signal connection quality of the future time period, and selecting the candidate base station with the highest comprehensive signal connection quality as the target base station.
In an exemplary embodiment of the present application, the apparatus is configured to:
monitoring the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to the target base station;
and updating the target base station based on the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to each base station when the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to the target base station is detected to be lower than a preset signal connection quality threshold.
According to an aspect of an embodiment of the present application, an electronic device is disclosed, including: one or more processors; storage means for storing one or more programs that, when executed by the one or more processors, cause the electronic device to implement any of the embodiments above.
According to an aspect of the embodiments of the present application, a computer program medium having stored thereon computer readable instructions, which when executed by a processor of a computer, cause the computer to perform any of the above embodiments is disclosed.
According to an aspect of embodiments of the present application, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The computer instructions are read from the computer-readable storage medium by a processor of a computer device, and executed by the processor, cause the computer device to perform the methods provided in the various alternative implementations described above.
In the embodiment of the application, since the working frequency bands of each unmanned aerial vehicle are different, the working frequency band of each base station is the same, and the working frequency band of each base station comprises the working frequency band of each unmanned aerial vehicle, the mutual interference caused by that a plurality of unmanned aerial vehicles send data to the base station at the same time can be avoided, and the mutual interference caused by that a plurality of base stations upload data to the unmanned aerial vehicles at the same time can also be avoided; the method comprises the steps of selecting a target base station based on the signal connection quality of a target unmanned aerial vehicle to a downlink frequency band of each base station, starting the uplink frequency band from the target base station to the target unmanned aerial vehicle, closing the uplink frequency band from other base stations to the target unmanned aerial vehicle, and providing uplink communication service for the target unmanned aerial vehicle by the target base station.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned in part by the practice of the application.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
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The above and other objects, features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 shows a schematic system architecture of an application of a communication control method between a drone and a base station according to one embodiment of the present application.
Fig. 2 shows a flow chart of a communication control method between a drone and a base station according to one embodiment of the present application.
Fig. 3 shows a schematic diagram of time synchronizing communication between a drone and a base station according to one embodiment of the present application.
Fig. 4 shows a block diagram of a communication control device between a drone and a base station according to one embodiment of the present application.
Fig. 5 shows a hardware diagram of an electronic device according to one embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more example embodiments. In the following description, numerous specific details are provided to give a thorough understanding of example embodiments of the present application. One skilled in the relevant art will recognize, however, that the aspects of the application may be practiced without one or more of the specific details, or with other methods, components, steps, etc. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.
Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.
Fig. 1 shows a schematic system architecture of an application of a communication control method between a drone and a base station provided by the present application.
Referring to fig. 1, in the embodiment of the present application, a plurality of unmanned aerial vehicles, a plurality of base stations, and at least one scheduling station are provided. Further, the ground station may be communicatively coupled to the dispatch station such that the ground station is able to view the operating conditions of the dispatch station.
In the flight process, the unmanned aerial vehicle can communicate with the flight hand terminal to acquire control instructions issued by the flight hand terminal in real time, or communicate with the cloud to acquire environment information (such as positioning information, weather information and the like) required by flight in real time. Because the communication distance of the unmanned aerial vehicle is generally limited, in order to expand the communication distance of the unmanned aerial vehicle so that the unmanned aerial vehicle can execute the flight task in a larger space range, a plurality of base stations are arranged at a plurality of positions.
The unmanned aerial vehicle can further communicate with a flywheel terminal or a cloud end by establishing wireless communication with the base station. Because a plurality of base stations can cover a larger communication range than one base station, the communication distance of the unmanned aerial vehicle is expanded by arranging the plurality of base stations.
In the embodiment of the application, according to the data transmission direction, the working frequency band of the unmanned aerial vehicle/base station is divided into the downlink frequency band and the uplink frequency band of the unmanned aerial vehicle/base station. In detail, a working frequency band used by the unmanned aerial vehicle for transmitting data to the base station is called a downlink frequency band of the unmanned aerial vehicle; the working frequency band used by the unmanned aerial vehicle for receiving the data uploaded by the base station is called an uplink frequency band of the unmanned aerial vehicle; the working frequency band used by the base station for receiving the data issued by the unmanned aerial vehicle is called a downlink frequency band of the base station; the working frequency band used by the base station to upload data to the unmanned aerial vehicle is called the uplink frequency band of the base station.
In this embodiment, a dedicated working frequency band is allocated to each unmanned aerial vehicle, and the working frequency bands of different unmanned aerial vehicles are different. Namely, a dedicated downlink frequency band is allocated to each unmanned aerial vehicle, and the downlink frequency bands of different unmanned aerial vehicles are different from each other; and, a dedicated uplink frequency band is allocated to each unmanned aerial vehicle, and the uplink frequency bands of different unmanned aerial vehicles are different from each other.
In this embodiment, the same working frequency band is allocated to each base station, and the working frequency band of each base station includes the working frequency band of each unmanned aerial vehicle. Namely, the same downlink frequency band is allocated to each base station, the downlink frequency band of each base station comprises the downlink frequency band of each unmanned aerial vehicle, and the downlink frequency band of each base station covers the downlink frequency bands of all unmanned aerial vehicles; and, the same uplink frequency band is allocated to each base station, and the uplink frequency band of each base station comprises the uplink frequency band of each unmanned aerial vehicle, and the uplink frequency band of each base station covers the uplink frequency bands of all unmanned aerial vehicles.
Through the exclusive downlink frequency channel of allocation for each unmanned aerial vehicle, the downlink frequency channel of different unmanned aerial vehicles is different each other, for each basic station allocation the same downlink frequency channel, and the downlink frequency channel of each basic station includes the downlink frequency channel of each unmanned aerial vehicle, and this application embodiment can avoid a plurality of unmanned aerial vehicles to issue data and mutual interference to the basic station simultaneously. And, the downlink frequency band from each unmanned aerial vehicle to each base station is configured to be always on, that is, each unmanned aerial vehicle can simultaneously issue data to all base stations through the downlink frequency band.
As shown in fig. 1, the frequency range of the downlink frequency band allocated to the unmanned aerial vehicle 1 is F1, the frequency range of the downlink frequency band allocated to the unmanned aerial vehicle 2 is F2, and by the same, the frequency range of the downlink frequency band allocated to the unmanned aerial vehicle j is Fk; the frequency ranges of the downlink frequency ranges allocated to each base station (base station 1, base station 2, and base station m) are F1 to Fk. j is an integer greater than 1; k is an integer greater than or equal to j; m is an integer greater than 1.
The downlink frequency band F1 from the unmanned aerial vehicle 1 to each base station is always started, the downlink frequency band F2 from the unmanned aerial vehicle 2 to each base station is also always started, and the like, the downlink frequency band Fk from the unmanned aerial vehicle j to each base station is also always started. Where the frequency range is typically in units of MHZ.
Through the uplink frequency band that distributes a exclusive for each unmanned aerial vehicle, the uplink frequency band of different unmanned aerial vehicles is different each other, distributes the same uplink frequency band for each basic station, and the uplink frequency band of each basic station includes the uplink frequency band of each unmanned aerial vehicle, then configures to the uplink frequency band of same unmanned aerial vehicle with each basic station, and only one basic station can open at the same time, namely, an unmanned aerial vehicle can only receive data from a basic station through its uplink frequency band at the same time, and this application embodiment can avoid a plurality of basic stations to upload data to unmanned aerial vehicle simultaneously and the mutual interference.
As shown in fig. 1, the frequency range of the uplink frequency band allocated to the unmanned aerial vehicle 1 is F1, the frequency range of the uplink frequency band allocated to the unmanned aerial vehicle 2 is F2, and so on, the frequency range of the uplink frequency band allocated to the unmanned aerial vehicle j is Fk; the uplink frequency band allocated to each base station (base station 1, base station 2, and base station m) has a frequency band range F1 to Fk.
If the uplink frequency band F1 from the base station 1 to the unmanned aerial vehicle 1 is opened, the uplink frequency band F1 from the base station 2 to the unmanned aerial vehicle 1 is closed, the uplink frequency band F1 from the base station 3 to the unmanned aerial vehicle 1 is closed, and the uplink frequency band F1 from the base station m to the unmanned aerial vehicle 1 is closed by pushing. Similarly, if the uplink frequency band F2 from the base station 1 to the unmanned aerial vehicle 2 is turned on, the uplink frequency band F2 from the base station 2 to the unmanned aerial vehicle 2 is turned off, the uplink frequency band F2 from the base station 3 to the unmanned aerial vehicle 2 is turned off, and the uplink frequency band F2 from the base station m to the unmanned aerial vehicle 2 is turned off. Other cases will not be described in detail.
For a specific target unmanned aerial vehicle, as to which base station starts the uplink frequency band to the target unmanned aerial vehicle, the scheduling station controls according to the communication control method between the unmanned aerial vehicle and the base station.
Specifically, fig. 2 shows a flowchart of a communication control method between a drone and a base station provided in the present application, where the method is performed by a dispatcher station communicatively connected to each base station, and the method includes:
Step S110, determining a downlink frequency band of a target unmanned aerial vehicle for transmitting data to a base station;
step S120, acquiring signal connection quality of the target unmanned aerial vehicle to the downlink frequency band of each base station according to the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station, and selecting the target base station based on the signal connection quality;
and step S130, starting an uplink frequency band from the target base station to the target unmanned aerial vehicle, closing the uplink frequency band from other base stations to the target unmanned aerial vehicle, and providing uplink communication service for the target unmanned aerial vehicle by the target base station.
Specifically, since the corresponding downlink frequency band is allocated to each unmanned aerial vehicle in advance, the scheduling station can directly determine the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station aiming at the target unmanned aerial vehicle.
And then the dispatching station acquires the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to each base station through each base station connected with the dispatching station. The higher the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to a certain base station, the more stable and smooth the target unmanned aerial vehicle transmits data to the base station, and the more stable and smooth the base station uploads data to the target unmanned aerial vehicle. Therefore, the scheduling station can select a target base station capable of providing stable and smooth uplink communication service for the target unmanned aerial vehicle based on the signal connection quality.
And then the scheduling station starts the uplink frequency band from the target base station to the target unmanned aerial vehicle, and closes the uplink frequency band from other base stations to the target unmanned aerial vehicle, and the target base station provides uplink communication service for the target unmanned aerial vehicle, so that when the target unmanned aerial vehicle roams between the base stations, the target unmanned aerial vehicle can be switched to the target base station for providing the uplink communication service without interruption, and the occurrence of communication interruption when the target unmanned aerial vehicle switches the base stations is avoided.
In summary, in the embodiment of the present application, since the working frequency bands of each unmanned aerial vehicle are different, the working frequency band of each base station is the same, and the working frequency band of each base station includes the working frequency band of each unmanned aerial vehicle, it is able to avoid mutual interference when different unmanned aerial vehicles issue data to the base station, and also able to avoid mutual interference when a plurality of base stations upload data to one unmanned aerial vehicle at the same time; the method comprises the steps of selecting a target base station based on the signal connection quality of a target unmanned aerial vehicle to a downlink frequency band of each base station, starting the uplink frequency band from the target base station to the target unmanned aerial vehicle, closing the uplink frequency band from other base stations to the target unmanned aerial vehicle, and providing uplink communication service for the target unmanned aerial vehicle by the target base station.
In an embodiment, starting an uplink frequency band from the target base station to the target unmanned aerial vehicle includes:
and opening an uplink frequency band of which the frequency range of the target base station is the same as the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station.
In this embodiment, since the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station is consistent with the uplink frequency band of the target unmanned aerial vehicle for receiving data uploaded by the base station, after determining the downlink frequency band of the target unmanned aerial vehicle and the target base station, the uplink frequency band of the target base station, which is the same as the downlink frequency band of the target unmanned aerial vehicle, is started, that is, the uplink frequency band from the target base station to the target unmanned aerial vehicle is started. For example: if the frequency range of the downlink frequency range of the target unmanned aerial vehicle is F1, after the scheduling station determines the target base station, the scheduling station starts the uplink frequency range of the target base station for uploading data to the target unmanned aerial vehicle, wherein the frequency range of the uplink frequency range is F1, and closes the uplink frequency range of the other base stations for uploading data to the target unmanned aerial vehicle, wherein the frequency range of the uplink frequency range is F1.
In one embodiment, the method provided by the present application further comprises:
and (3) controlling all base stations with uplink frequency bands to be started by adopting a time synchronization technology, and synchronously uploading data to the unmanned aerial vehicle in the started uplink frequency bands.
In this embodiment, the scheduling station adopts a GPS synchronization technology, an ethernet synchronization technology, or other time synchronization technologies, and sends a time synchronization instruction to the base stations that need to upload data, so that the base stations are controlled to upload data to the unmanned aerial vehicle synchronously in the uplink frequency band that is started, and thus no interference exists between different base stations, between different frequency bands of the same base station, and between different unmanned aerial vehicles.
It should be noted that, the same base station may simultaneously open N uplink frequency bands to upload data to N unmanned aerial vehicles, that is, the same base station may simultaneously provide uplink communication services for multiple unmanned aerial vehicles in multiple uplink frequency bands. Wherein N is an integer greater than 0.
For example: if the uplink frequency band F1 of the unmanned aerial vehicle 1 is started by the base station 1, other base stations except the base station 1 close the uplink frequency band F1; the uplink frequency band F2 of the unmanned aerial vehicle 2 is turned on by the base station 2, and other base stations except the base station 2 turn off the uplink frequency band F2. The scheduling station adopts a time synchronization technology to control the time point of uploading data to the unmanned aerial vehicle 1 by the base station 1 in the uplink frequency band F1 and the time point of uploading data to the unmanned aerial vehicle 2 by the base station 2 in the uplink frequency band F2, so that synchronization is kept.
Also for example: if the uplink frequency band F1 of the unmanned aerial vehicle 1 is started by the base station 1, other base stations except the base station 1 close the uplink frequency band F1; the base station 1 also opens the uplink frequency band F2 of the unmanned aerial vehicle 2, and other base stations except the base station 1 close the uplink frequency band F2; the uplink frequency band F3 of the unmanned aerial vehicle 3 is turned on by the base station 3, and other base stations than the base station 3 turn off the uplink frequency band F3. The scheduling station adopts a time synchronization technology to control the base station 1 to keep synchronization with the base station 3 at the time point of uploading data to the unmanned aerial vehicle 3 at the uplink frequency band F1 and the time point of uploading data to the unmanned aerial vehicle 2 at the uplink frequency band F2.
In particular, the time synchronization may be represented by a schematic diagram as shown in fig. 3. After time synchronization, the base station synchronously uploads data to the unmanned aerial vehicle and synchronously receives data issued by the unmanned aerial vehicle.
In an embodiment, according to a downlink frequency band of a target unmanned aerial vehicle for transmitting data to a base station, obtaining signal connection quality of the downlink frequency band of the target unmanned aerial vehicle to each base station includes:
acquiring the signal-to-noise ratio, the signal strength and the packet loss rate of the downlink frequency band from the target unmanned aerial vehicle to each base station according to the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station;
and calculating to obtain the signal connection quality according to weights respectively distributed to the signal-to-noise ratio, the signal strength and the packet loss rate.
In this embodiment, the signal-to-noise ratio, the signal strength and the packet loss rate are integrated to measure the signal connection quality, but the present invention is not limited thereto, and for example, the signal connection quality may be measured according to only one or two of the signal-to-noise ratio, the signal strength and the packet loss rate.
Specifically, after the scheduling station determines the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station, the signal-to-noise ratio, signal strength and packet loss rate of the downlink frequency band of the target unmanned aerial vehicle to each base station can be determined by counting the signal index and the data packet index when the target unmanned aerial vehicle transmits data to each base station. And then weighting the signal-to-noise ratio, the signal strength and the packet loss rate according to weights respectively distributed to the signal-to-noise ratio, the signal strength and the packet loss rate, and calculating to obtain the signal connection quality of the target unmanned aerial vehicle to the downlink frequency band of each base station.
By way of example, the signal connection quality can be calculated using the following formula:
P(m,j)＝A1*SNR(m,j)+A2*RSSI(m,j)+A3*ERR(m,j)
wherein m represents a base station; j represents an unmanned plane; p (m, j) represents the signal connection quality of the downlink frequency band from the unmanned aerial vehicle j to the base station m; a1 represents a weight assigned to the signal-to-noise ratio; SNR (m, j) represents the signal-to-noise ratio of the downlink frequency band from unmanned plane j to base station m; a2 represents a weight assigned to the signal strength; RSSI (m, j) represents the signal strength of the downlink frequency band from the unmanned plane j to the base station m; a3 represents the weight distributed for the packet loss rate; ERR (m, j) represents the packet loss rate of the downlink frequency band from the drone j to the base station m.
It should be noted that, when the quality of the signal connection is measured according to only one or two of the signal-to-noise ratio, the signal strength and the packet loss ratio, the formula for calculating the quality of the signal connection is adjusted accordingly.
In one embodiment, selecting the target base station based on the signal connection quality includes:
and selecting the base station with the highest signal connection quality as a target base station.
In this embodiment, after the scheduling station calculates the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to each base station, the base station with the highest signal connection quality is directly selected as the target base station.
In one embodiment, selecting the target base station based on the signal connection quality includes:
Predicting the signal connection quality of a future time period based on the signal connection quality of the historical time period and the signal connection quality of the current time;
and selecting a target base station based on the signal connection quality at the current moment and the signal connection quality in the future time period.
In this embodiment, considering that under normal conditions, the quality of the signal connection of the target unmanned aerial vehicle to the downlink frequency band of each base station is continuously changed with time, and the trend of the change is stable in a certain time, the quality of the signal connection in the future time period can be accurately predicted according to the quality of the signal connection in the historical time period and the quality of the signal connection in the current time.
For example: if the target unmanned aerial vehicle is far away from a base station, the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to the base station can be gradually reduced. Therefore, the signal connection quality of the target unmanned aerial vehicle to the base station in a future time period can be accurately predicted according to the signal connection quality of the target unmanned aerial vehicle to the base station in a historical time period and the signal connection quality of the target unmanned aerial vehicle to the base station at the current moment.
Considering that in some cases, at the present moment, although the quality of signal connection of the downlink frequency band to the base station a is good, the quality of signal connection of the downlink frequency band to the base station B is general, in a future period, the quality of signal connection of the downlink frequency band to the base station a of the target unmanned aerial vehicle will be worse and better, and the quality of signal connection of the downlink frequency band to the base station B will be better, so that the selection of the base station B as the target base station may be better than the selection of the base station a as the target base station from the overall appearance.
Therefore, in this embodiment, after the signal connection quality of the future time period is predicted, the target base station is selected in combination with the signal connection quality at the current time, so that the target base station can stably and smoothly provide the uplink communication service for the target unmanned aerial vehicle in both the current and future.
In an embodiment, selecting the target base station based on the signal connection quality at the current time and the signal connection quality of the future time period includes:
and acquiring the comprehensive signal connection quality of each base station based on the signal connection quality at the current moment and the signal connection quality of the future time period, and selecting the base station with the highest comprehensive signal connection quality as the target base station.
In this embodiment, the signal connection quality of each base station may be obtained by averaging the signal connection quality at the current time and the signal connection quality in the future time period. The integrated signal connection quality of each base station can also be obtained by continuously integrating the signal connection quality at the current moment and the signal connection quality in the future time period. And then selecting the base station with the highest comprehensive signal connection quality as a target base station.
In an embodiment, selecting the target base station based on the signal connection quality at the current time and the signal connection quality of the future time period includes:
Screening out base stations of which the signal connection quality at the current moment is not lower than a preset signal connection quality threshold value and the signal connection quality in a future time period is not lower than the signal connection quality threshold value all the time, and obtaining candidate base stations;
and acquiring the comprehensive signal connection quality of each candidate base station based on the signal connection quality at the current moment and the signal connection quality of the future time period, and selecting the candidate base station with the highest comprehensive signal connection quality as the target base station.
In this embodiment, in order to ensure that the target base station can continuously provide the uplink communication service for the target unmanned aerial vehicle, it is required to ensure that the signal connection quality of the target base station is always not lower than a preset signal connection quality threshold. If the signal connection quality of a certain base station is lower than a preset signal connection quality threshold at the current moment or at a future moment, the base station cannot provide uplink communication service for the target unmanned aerial vehicle continuously, and the base station should not be considered in selecting the target base station even if the comprehensive signal connection quality of the base station is higher.
Therefore, in this embodiment, the base stations are first screened according to the preset signal connection quality threshold, and the base stations whose current time and future time period are not lower than the signal connection quality threshold all the time are screened out, so as to obtain candidate base stations. And then acquiring the comprehensive signal connection quality of each candidate base station based on the signal connection quality at the current moment and the signal connection quality of the future time period, and finally selecting the candidate base station with the highest comprehensive signal connection quality as a target base station.
In an embodiment, after the uplink frequency band from the target base station to the target unmanned aerial vehicle is started, the communication control method between the unmanned aerial vehicle and the base station further includes:
and monitoring the signal connection quality in real time, and updating the target base station in real time based on the signal connection quality of the target unmanned aerial vehicle to the downlink frequency band of each base station.
In this embodiment, after the uplink frequency band from the target base station to the target unmanned aerial vehicle is started, the scheduling station monitors the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to each base station in real time according to the method provided by the application, and updates the target base station in real time based on the signal connection quality of each base station, so that the target base station providing uplink communication service for the target unmanned aerial vehicle is always optimal.
For example: after the base station A is selected as the target base station, once the signal connection quality of the base station A is detected to be not the highest, but the signal connection quality of the base station B is detected to be the highest, the base station B is updated to be the target base station, so that the target base station for providing uplink communication service for the target unmanned aerial vehicle is always the highest in signal connection quality.
In an embodiment, after the uplink frequency band from the target base station to the target unmanned aerial vehicle is started, the method further includes:
Monitoring the signal connection quality of a downlink frequency band from a target unmanned aerial vehicle to a target base station;
when the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to the target base station is detected to be lower than a preset signal connection quality threshold, updating the target base station based on the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to each unmanned aerial vehicle.
In the embodiment of the invention, after the downlink frequency band of the target unmanned aerial vehicle and the target base station are determined, an uplink frequency band of the target base station, which is the same as the downlink frequency band range of the target unmanned aerial vehicle, is started, namely, the uplink frequency band from the target base station to the target unmanned aerial vehicle is started, and the uplink frequency bands of other base stations are closed. It should be noted that, since the downlink frequency bands of each unmanned aerial vehicle are different, for any base station, each frequency band only corresponds to one unmanned aerial vehicle, and no situation that a certain frequency band corresponds to two unmanned aerial vehicles exists.
In this embodiment, it is considered that if the target base station providing the uplink communication service for the target unmanned aerial vehicle is made always optimal, the target unmanned aerial vehicle may be caused to switch the target base station too frequently. Therefore, in order to avoid the target unmanned aerial vehicle from switching the target base station too frequently, in this embodiment, after the target base station is started to the uplink frequency band of the target unmanned aerial vehicle, the scheduling station detects the signal connection quality of the downlink frequency band of the target unmanned aerial vehicle to the target base station according to the method provided by the application, and when the signal connection quality of the downlink frequency band of the target unmanned aerial vehicle to the target base station is lower than a preset signal connection quality threshold, the target base station is updated based on the signal connection quality of each base station.
Fig. 4 is a block diagram of a communication control device between a drone and a base station according to an embodiment of the present application, where each drone has a different operating frequency band, each base station has the same operating frequency band, and each base station includes an operating frequency band of each drone, and the device is provided at a dispatch station communicatively connected to each base station, and the device includes:
the frequency band determining module 210 is configured to determine a downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station;
the base station selection module 220 is configured to obtain signal connection quality of the target unmanned aerial vehicle to the downlink frequency band of each base station according to the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station, and select the target base station based on the signal connection quality;
the uplink frequency band switch module 230 is configured to turn on an uplink frequency band from the target base station to the target unmanned aerial vehicle, and turn off an uplink frequency band from the other base stations to the target unmanned aerial vehicle, and the target base station provides uplink communication service for the target unmanned aerial vehicle.
In an exemplary embodiment of the present application, the upstream frequency band switch module is configured to:
and starting an uplink frequency band of which the frequency range is the same as the downlink frequency band of the target unmanned aerial vehicle in the target base station.
In an exemplary embodiment of the present application, the base station selection module is configured to:
acquiring a signal-to-noise ratio, a signal strength and a packet loss rate of the downlink frequency band from the target unmanned aerial vehicle to each base station according to the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station;
and calculating the signal connection quality according to weights respectively distributed to the signal-to-noise ratio, the signal strength and the packet loss rate.
In an exemplary embodiment of the present application, the base station selection module is configured to:
and selecting the base station with the highest signal connection quality as the target base station.
In an exemplary embodiment of the present application, the base station selection module is configured to:
predicting the signal connection quality for a future time period based on the signal connection quality for a historical time period and the signal connection quality for a current time;
and selecting the target base station based on the signal connection quality at the current moment and the signal connection quality of the future time period.
In an exemplary embodiment of the present application, the base station selection module is configured to:
screening out base stations of which the signal connection quality at the current moment is not lower than a preset signal connection quality threshold value and the signal connection quality in a future time period is not lower than the signal connection quality threshold value all the time, and obtaining candidate base stations;
And acquiring the comprehensive signal connection quality of each candidate base station based on the signal connection quality at the current moment and the signal connection quality of the future time period, and selecting the candidate base station with the highest comprehensive signal connection quality as the target base station.
In an exemplary embodiment of the present application, the apparatus is configured to:
monitoring the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to the target base station;
and updating the target base station based on the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to each base station when the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to the target base station is detected to be lower than a preset signal connection quality threshold.
An electronic device 30 according to an embodiment of the present application is described below with reference to fig. 5. The electronic device 30 shown in fig. 5 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments herein.
As shown in fig. 5, the electronic device 30 is in the form of a general purpose computing device. Components of electronic device 30 may include, but are not limited to: the at least one processing unit 310, the at least one memory unit 320, and a bus 330 connecting the various system components, including the memory unit 320 and the processing unit 310.
Wherein the storage unit stores program code that is executable by the processing unit 310 such that the processing unit 310 performs the steps according to various exemplary embodiments of the present invention described in the description of the exemplary methods described above in this specification. For example, the processing unit 310 may perform the various steps as shown in fig. 2.
Storage unit 320 may include readable media in the form of volatile storage units, such as Random Access Memory (RAM) 3201 and/or cache memory 3202, and may further include Read Only Memory (ROM) 3203.
The storage unit 320 may also include a program/utility 3204 having a set (at least one) of program modules 3205, such program modules 3205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
Bus 330 may be one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The electronic device 30 may also communicate with one or more external devices 400 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 30, and/or any device (e.g., router, modem, etc.) that enables the electronic device 30 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 350. An input/output (I/O) interface 350 is connected to the display unit 340. Also, electronic device 30 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 360. As shown, the network adapter 360 communicates with other modules of the electronic device 30 over the bus 330. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 30, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a usb disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present application.
In an exemplary embodiment of the present application, there is also provided a computer-readable storage medium having stored thereon computer-readable instructions, which, when executed by a processor of a computer, cause the computer to perform the method described in the method embodiment section above.
According to an embodiment of the present application, there is also provided a program product for implementing the method in the above method embodiments, which may employ a portable compact disc read only memory (CD-ROM) and comprise program code and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functions of two or more modules or units described above may be embodied in one module or unit, in accordance with embodiments of the present application. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
Furthermore, although the various steps of the methods herein are depicted in the accompanying drawings in a particular order, this is not required to either suggest that the steps must be performed in that particular order, or that all of the illustrated steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a mobile terminal, or a network device, etc.) to perform the method according to the embodiments of the present application.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

Claims (10)

1. A communication control method between an unmanned aerial vehicle and a base station, wherein an operation frequency band of each unmanned aerial vehicle is different, an operation frequency band of each base station is the same, and the operation frequency band of each base station includes the operation frequency band of each unmanned aerial vehicle, the method being performed by a scheduling station in communication connection with each base station, the method comprising:
determining a downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station;
acquiring signal connection quality of the target unmanned aerial vehicle to the downlink frequency band of each base station according to the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station, and selecting a target base station based on the signal connection quality;
And starting the uplink frequency range from the target base station to the target unmanned aerial vehicle, closing the uplink frequency range from other base stations to the target unmanned aerial vehicle, and providing uplink communication service for the target unmanned aerial vehicle by the target base station.
2. The method of claim 1, wherein the opening the uplink frequency band of the target base station to the target drone comprises:
and starting an uplink frequency band of which the frequency range is the same as the downlink frequency band of the target unmanned aerial vehicle in the target base station.
3. The method of claim 1, wherein obtaining the signal connection quality of the target drone to the downlink frequency band of each base station according to the downlink frequency band of the target drone for transmitting data to the base station, comprises:
acquiring a signal-to-noise ratio, a signal strength and a packet loss rate of the downlink frequency band from the target unmanned aerial vehicle to each base station according to the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station;
and calculating the signal connection quality according to weights respectively distributed to the signal-to-noise ratio, the signal strength and the packet loss rate.
4. The method of claim 1, wherein selecting a target base station based on the signal connection quality comprises:
And selecting the base station with the highest signal connection quality as the target base station.
5. The method of claim 1, wherein selecting a target base station based on the signal connection quality comprises:
predicting the signal connection quality for a future time period based on the signal connection quality for a historical time period and the signal connection quality for a current time;
and selecting the target base station based on the signal connection quality at the current moment and the signal connection quality of the future time period.
6. The method of claim 5, wherein selecting the target base station based on the signal connection quality at the current time and the signal connection quality for a future time period comprises:
screening out base stations of which the signal connection quality at the current moment is not lower than a preset signal connection quality threshold value and the signal connection quality in a future time period is not lower than the signal connection quality threshold value all the time, and obtaining candidate base stations;
and acquiring the comprehensive signal connection quality of each candidate base station based on the signal connection quality at the current moment and the signal connection quality of the future time period, and selecting the candidate base station with the highest comprehensive signal connection quality as the target base station.
7. The method of claim 1, wherein after turning on the target base station to the uplink frequency band of the target drone, the method further comprises:
monitoring the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to the target base station;
and updating the target base station based on the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to each base station when the signal connection quality of the downlink frequency band from the target unmanned aerial vehicle to the target base station is detected to be lower than a preset signal connection quality threshold.
8. Communication control device between unmanned aerial vehicle and the basic station, its characterized in that, the operating frequency channel of each unmanned aerial vehicle is different, and the operating frequency channel of each basic station is the same, and the operating frequency channel of each basic station includes the operating frequency channel of each unmanned aerial vehicle, the device locate with each basic station communication connection's dispatch station, the device includes:
the frequency band determining module is configured to determine a downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station;
the base station selection module is configured to acquire signal connection quality of the target unmanned aerial vehicle to the downlink frequency band of each base station according to the downlink frequency band of the target unmanned aerial vehicle for transmitting data to the base station, and select the target base station based on the signal connection quality;
And the uplink frequency band switching module is configured to start the uplink frequency band from the target base station to the target unmanned aerial vehicle, close the uplink frequency band from other base stations to the target unmanned aerial vehicle, and provide uplink communication service for the target unmanned aerial vehicle by the target base station.
9. An electronic device, comprising:
one or more processors;
storage means for storing one or more programs which, when executed by the one or more processors, cause the electronic device to implement the method of any of claims 1-7.
10. A computer readable storage medium having stored thereon computer readable instructions which, when executed by a processor of a computer, cause the computer to perform the method of any of claims 1 to 7.
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