CN113556189B - Antenna adjusting method and device for unmanned aerial vehicle - Google Patents
Antenna adjusting method and device for unmanned aerial vehicle Download PDFInfo
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- CN113556189B CN113556189B CN202110705240.1A CN202110705240A CN113556189B CN 113556189 B CN113556189 B CN 113556189B CN 202110705240 A CN202110705240 A CN 202110705240A CN 113556189 B CN113556189 B CN 113556189B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
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Abstract
The application discloses an antenna adjusting method of an unmanned aerial vehicle, which comprises the following steps: acquiring first information of a first base station for multiple times, wherein the first base station is a base station providing communication service for the unmanned aerial vehicle, and the first information comprises a signal to interference plus noise ratio (SINR) and first transmitting antenna position information of the first base station; determining the position information of a target transmitting antenna according to the SINR and the position information of the first transmitting antenna which are acquired for multiple times; and adjusting the antenna of the unmanned aerial vehicle according to the position information of the target transmitting antenna. The position information of the target transmitting antenna is obtained by screening from the position information of the first transmitting antenna obtained for multiple times, so that the accuracy of the obtained position information of the target transmitting antenna is ensured; to this target transmitting antenna positional information, adjust unmanned aerial vehicle's antenna in real time, guarantee that unmanned aerial vehicle can acquire optimal communication signal, make unmanned aerial vehicle can carry out reliable and stable communication with first basic station, promote control and management effect to unmanned aerial vehicle.
Description
Technical Field
The application relates to the technical field of wireless communication, in particular to an antenna adjusting method and device for an unmanned aerial vehicle.
Background
With the continuous development of unmanned aerial vehicle technology, unmanned aerial vehicles can be applied to multiple different industries. For example, the unmanned aerial vehicle can be applied to inspection and data acquisition scenes in industries such as agriculture, energy, security, logistics and the like. In a traditional unmanned aerial vehicle application scene, the unmanned aerial vehicle can be monitored and managed in a network interconnection mode.
However, the quality of the received signal of the drone is often affected by the signal of the communication network, and once the signal strength of the communication network suddenly drops or is discontinuous, the communication quality of the drone is easily reduced, which affects the user experience of the drone.
Disclosure of Invention
Therefore, the application provides an unmanned aerial vehicle antenna adjustment method and device, and the problem of how to improve the communication quality of the unmanned aerial vehicle so as to improve the monitoring and management effects on the unmanned aerial vehicle is solved.
In order to achieve the above object, a first aspect of the present application provides an antenna adjustment method for an unmanned aerial vehicle, where the method includes:
acquiring first information of a first base station for multiple times, wherein the first base station is a base station providing communication service for the unmanned aerial vehicle, and the first information comprises a signal to interference plus noise ratio (SINR) and first transmitting antenna position information of the first base station;
determining the position information of a target transmitting antenna according to the SINR and the position information of the first transmitting antenna which are acquired for multiple times;
and adjusting the antenna of the unmanned aerial vehicle according to the position information of the target transmitting antenna.
In some specific implementations, determining the target transmit antenna position information according to the SINR obtained multiple times and the first transmit antenna position information includes:
sequencing the SINRs to obtain a sequencing result;
and selecting target transmitting antenna position information from the plurality of first transmitting antenna position information according to the sequencing result.
In some implementations, adjusting the antenna of the drone according to the target transmit antenna location information includes:
and adjusting the position of a receiving antenna of the unmanned aerial vehicle according to the position information of the target transmitting antenna so as to enable the receiving antenna of the unmanned aerial vehicle to correspond to the transmitting antenna of the first base station.
In some specific implementations, after adjusting the antenna of the drone according to the target transmitting antenna location information, the method further includes:
and acquiring Reference Signal Received Power (RSRP) of the first base station in real time through a 5G network.
In some specific implementations, after adjusting the antenna of the drone according to the target transmitting antenna position information, the method further includes:
acquiring RSRP of a second base station, wherein the second base station is a base station for providing communication service for the unmanned aerial vehicle after the position of the unmanned aerial vehicle changes;
and controlling the unmanned aerial vehicle to be switched into a serving cell corresponding to the second base station under the condition that the RSRP of the second base station is determined to be larger than the RSRP of the first base station.
In some specific implementations, after acquiring the RSRP of the second base station, before controlling the drone to switch to the serving cell corresponding to the second base station, the method further includes:
sending a position request to a second base station to acquire second information of the second base station, wherein the second information comprises second transmitting antenna position information of the second base station and half-power beam width of the second base station;
and determining the main signal coverage area information of the second base station according to the half-power beam width of the second base station and the second transmitting antenna position information of the second base station.
In some implementations, before obtaining the first information of the first base station multiple times, the method further includes:
acquiring frequency range information supported by a first base station;
acquiring service information corresponding to the unmanned aerial vehicle;
and determining the farthest effective coverage distance of the first base station according to the frequency band information supported by the first base station and/or the service information corresponding to the unmanned aerial vehicle, wherein the farthest effective coverage distance is the farthest coverage distance capable of supporting the networked unmanned aerial vehicle.
In some specific implementations, the service information corresponding to the drone includes: the service type corresponding to the unmanned aerial vehicle, and/or the interference information of the unmanned aerial vehicle when processing the service.
In some implementations, the first information further includes: any one or more of the physical cell identification of the first base station, the latitude and longitude information of the transmitting antenna of the first base station, the elevation angle of the transmitting antenna of the first base station and the half-power beam width.
In order to achieve the above object, a second aspect of the present application provides an antenna adjusting apparatus for an unmanned aerial vehicle, including:
an obtaining module configured to obtain first information of a first base station multiple times, where the first base station is a base station providing a communication service for the drone, and the first information includes: a signal to interference plus noise ratio (SINR) and first transmit antenna position information of a first base station;
the screening module is configured to determine the position information of the target transmitting antenna according to the SINR and the position information of the first transmitting antenna which are acquired for multiple times;
and the adjusting module is configured to adjust the position of the unmanned aerial vehicle according to the position information of the target transmitting antenna.
According to the antenna adjusting method and device for the unmanned aerial vehicle, the position information of the target transmitting antenna is obtained by screening from the position information of the first transmitting antenna obtained for multiple times according to the signal-to-interference-plus-noise ratio obtained for multiple times and the position information of the first transmitting antenna of the first base station, and the accuracy of the obtained position information of the target transmitting antenna is ensured; to this target transmitting antenna positional information, adjust unmanned aerial vehicle's antenna in real time, guarantee that unmanned aerial vehicle can acquire optimal communication signal, make unmanned aerial vehicle can carry out reliable and stable communication with first basic station, promote control and management effect to unmanned aerial vehicle.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure and not to limit the disclosure. The above and other features and advantages will become more apparent to those skilled in the art by describing in detail exemplary embodiments thereof with reference to the attached drawings, in which:
fig. 1 shows a schematic flow chart of an antenna adjustment method for an unmanned aerial vehicle according to an embodiment of the present application.
Fig. 2 shows a schematic flowchart of an antenna adjustment method for an unmanned aerial vehicle according to still another embodiment of the present application.
Fig. 3 shows a block diagram of an antenna adjustment apparatus of an unmanned aerial vehicle according to an embodiment of the present application.
Fig. 4 shows a block diagram of an antenna adjustment system of a drone provided in an embodiment of the present application.
Fig. 5 shows a flowchart of a working method of the antenna adjustment system of the unmanned aerial vehicle provided in the embodiment of the present application.
In the drawings:
301: the obtaining module 302: screening module
303: the adjusting module 400: antenna adjustment system of unmanned aerial vehicle
410: unmanned aerial vehicle 411: airborne terminal
412: antenna adjusting device 420: first ground base station
430: second ground base station
Detailed Description
The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration and explanation only, and are not intended to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Traditional unmanned aerial vehicle has the supervision degree of difficulty big, observes and controls the problem that is limited much, is difficult to shoulder the burden that plays the high-speed development of industry in the future. With the multi-dimensional application of the fifth generation Mobile Communication Technology (5G), the unmanned aerial vehicle can communicate with the help of the 5G network, so that the resource loss can be further reduced, the safety supervision capability can be improved, the problem of the existing measurement and control distance limitation can be broken through, and the application range of the unmanned aerial vehicle can be expanded. However, the unmanned aerial vehicle application which relies on the 5G network for communication is affected by the mobile network signal, and once the communication signal strength suddenly drops or is discontinuous, the application of the networked unmanned aerial vehicle cannot be used. Therefore, the signal intensity of the communication signal is optimized, and the most important problem of guaranteeing the application effect of the unmanned aerial vehicle is solved.
Fig. 1 shows a schematic flow chart of an antenna adjustment method for an unmanned aerial vehicle according to an embodiment of the present application, where the method is applicable to an antenna adjustment apparatus for an unmanned aerial vehicle. As shown in fig. 1, the method comprises the following steps:
step S101, first information of a first base station is acquired for multiple times.
The first base station is a base station providing communication service for the drone, and the first information includes a Signal to Interference plus Noise Ratio (SINR) and first transmit antenna position information of the first base station.
For example, the drone may send an information request to the first base station multiple times to obtain an information response fed back by the first base station, the information response including the first information. The position information of the first transmitting antenna of the first base station is obtained for multiple times, the position of the transmitting antenna of the base station can be obtained in real time, and the unmanned aerial vehicle can be guaranteed to accurately obtain the communication signal sent by the base station.
In some implementations, the first information further includes: any one or more of Physical Cell Identity (PCI) of the first base station, latitude and longitude information of a transmitting antenna of the first base station, an elevation angle and half-power beam width of the transmitting antenna of the first base station.
Wherein, the half-power beamwidth may also be a 3dB beamwidth. In the power pattern, in a certain plane containing the maximum radiation direction of the main lobe, the angle between two points where the power flux density with respect to the maximum radiation direction is reduced to a half (or less than 3dB from the maximum) is called a half-power beam width. The half-power beam width comprises a horizontal plane half-power beam width and a vertical plane half-power beam width, and the horizontal plane half-power beam width refers to the half-power beam width of a horizontal plane directional diagram; the vertical plane half-power beamwidth refers to the half-power beamwidth of the vertical plane pattern. If the half-power beam width is narrower, the better the directivity of the antenna and the stronger the interference rejection.
And step S102, determining the position information of the target transmitting antenna according to the SINR and the position information of the first transmitting antenna which are acquired for multiple times.
Wherein the SINR is a signal to noise ratio (SINR) reflecting the quality of the communication signal of the first base station, and the SINR in each first message is information corresponding to the first transmit antenna position information. The position information of the target transmitting antenna can reflect the position information of the optimal transmitting antenna of the first base station, so that the unmanned aerial vehicle can adjust the position of the communication antenna of the unmanned aerial vehicle according to the position information of the target transmitting antenna, and the communication quality between the unmanned aerial vehicle and the first base station is ensured.
In some specific implementations, determining the target transmit antenna position information according to the SINR obtained multiple times and the first transmit antenna position information includes: sequencing the SINRs to obtain a sequencing result; and selecting target transmitting antenna position information from the plurality of first transmitting antenna position information according to the sequencing result.
It should be noted that, while acquiring the position information of the first transmitting antenna, the communication signal quality of the first base station can be determined through the SINR, so that the unmanned aerial vehicle can know whether the communication signal quality between the unmanned aerial vehicle and the first base station is normal or not in real time.
For example, the antenna position corresponding to the SINR maximum value in the ranking result is taken as the target transmitting antenna position, so that the accuracy of the target transmitting antenna position can be ensured.
And S103, adjusting the antenna of the unmanned aerial vehicle according to the position information of the target transmitting antenna.
Wherein the antenna of the drone may include a transmit antenna and/or a receive antenna. And adjusting the transmitting antenna and/or the receiving antenna of the unmanned aerial vehicle through the position information of the target transmitting antenna so that the unmanned aerial vehicle can acquire the optimal communication signal.
In some implementations, adjusting the antenna of the drone according to the target transmit antenna location information includes: and adjusting the position of a receiving antenna of the unmanned aerial vehicle according to the position information of the target transmitting antenna so as to enable the receiving antenna of the unmanned aerial vehicle to correspond to the transmitting antenna of the first base station.
Wherein, according to target transmitting antenna positional information, the position of adjustment unmanned aerial vehicle's receiving antenna can guarantee that unmanned aerial vehicle's receiving antenna can correspond with the transmitting antenna of first basic station, guarantees that unmanned aerial vehicle's communication signal keeps the optimum, avoids the interference of other unnecessary signals to and communication network's signal strength dip or the discontinuous situation of signal strength takes place, promotes the user and experiences unmanned aerial vehicle's use.
In this embodiment, the target transmitting antenna position information is obtained by screening from the first transmitting antenna position information obtained multiple times according to the signal-to-interference-plus-noise ratio obtained multiple times and the first transmitting antenna position information of the first base station, so as to ensure the accuracy of the obtained target transmitting antenna position information; to this target transmitting antenna positional information, adjust unmanned aerial vehicle's antenna in real time, guarantee that unmanned aerial vehicle can acquire optimal communication signal, make unmanned aerial vehicle can carry out reliable and stable communication with first basic station, promote control and management effect to unmanned aerial vehicle.
Fig. 2 is a schematic flowchart illustrating an antenna adjustment method for a drone, which is applicable to an antenna adjustment apparatus for a drone according to another embodiment of the present application. As shown in fig. 2, the method comprises the following steps:
step S201, first information of the first base station is acquired multiple times.
Step S202, the position information of the target transmitting antenna is determined according to the SINR and the position information of the first transmitting antenna which are acquired for multiple times.
And step S203, adjusting the antenna of the unmanned aerial vehicle according to the position information of the target transmitting antenna.
It should be noted that steps S201 to S203 in this embodiment are the same as steps S101 to S103 in the previous embodiment, and are not repeated herein.
Step S204, acquiring the reference signal receiving power of the first base station in real time through the 5G network.
The Reference Signal Receiving Power (RSRP) may be used to determine a change in the strength of the communication Signal of the first base station. Due to the high-speed mobility of the unmanned aerial vehicle in practical application, the position of the unmanned aerial vehicle is updated in real time, and when the unmanned aerial vehicle moves to the coverage range of other base stations, the RSRP sent by other base stations can be received. Through the RSRP of the different base stations obtained, the strength of communication signals between the different base stations can be obtained, so that the unmanned aerial vehicle can reasonably judge whether cell switching is needed or not, and the communication quality of the unmanned aerial vehicle is guaranteed.
In some specific implementations, after adjusting the antenna of the drone according to the target transmitting antenna location information, the method further includes: acquiring RSRP of a second base station, wherein the second base station is a base station for providing communication service for the unmanned aerial vehicle after the position of the unmanned aerial vehicle changes; and controlling the unmanned aerial vehicle to be switched into a serving cell corresponding to the second base station under the condition that the RSRP of the second base station is determined to be larger than the RSRP of the first base station.
It should be noted that, by comparing the RSRP of the first base station with the RSRP of the second base station, if the RSRP of the second base station is greater than the RSRP of the first base station (that is, after the position of the drone changes, the strength of the communication signal of the second base station acquired by the drone at the changed position is greater than the strength of the communication signal of the first base station), the drone may adjust the active range of the position of its receiving antenna by extracting, and control the drone to switch to the serving cell corresponding to the second base station, so that the drone may obtain better communication quality, and further eliminate the poor perception of the drone in the application process.
In this embodiment, the target transmitting antenna position information is obtained by screening from the first transmitting antenna position information obtained multiple times through the SINR obtained multiple times and the first transmitting antenna position information of the first base station, so as to ensure the accuracy of the obtained target transmitting antenna position information; aiming at the position information of the target transmitting antenna, the antenna of the unmanned aerial vehicle is adjusted in real time, and the unmanned aerial vehicle can obtain the optimal communication signal, so that the unmanned aerial vehicle can stably and reliably communicate with the first base station. In the process of the navigation of unmanned aerial vehicle, still can acquire the communication signal of other basic stations simultaneously, through the RSRP of different basic stations of real-time contrast, under the condition that the RSRP of confirming the second basic station is greater than the RSRP of first basic station, control unmanned aerial vehicle and switch to the serving cell that the second basic station corresponds in to guarantee that unmanned aerial vehicle can obtain more excellent communication signal, promote control and management effect to unmanned aerial vehicle.
In some specific implementations, after the RSRP of the second base station is obtained, before controlling the drone to switch to the serving cell corresponding to the second base station, the method further includes: sending a position request to a second base station to acquire second information of the second base station, wherein the second information comprises second transmitting antenna position information of the second base station and half-power beam width of the second base station; and determining the main signal coverage area information of the second base station according to the half-power beam width of the second base station and the second transmitting antenna position information of the second base station.
The second information may further include any one or more of SINR of the second base station, PCI of the second base station, latitude and longitude information of a transmitting antenna of the second base station, and an elevation angle of the transmitting antenna of the second base station. The main signal coverage area information of the second base station is used to indicate coverage area information corresponding to the most concentrated signal of the second base station, for example, if 80% of transmission signals of the second base station are concentrated in a certain sector area, the sector area is the main signal coverage area of the second base station, and the main signal coverage area information of the second base station can be used to represent the main coverage area of the signal of the second base station, so that it is convenient for the drone to determine whether the drone enters the main signal coverage area of the second base station when location update occurs.
Before the unmanned aerial vehicle is switched to the serving cell corresponding to the second base station, the SINR of the second base station may be obtained multiple times and compared by using a processing method of the first base station, so as to obtain the optimal position information (e.g., the position information of the second transmitting antenna) of the second base station, thereby ensuring that the optimal communication signal sent by the second base station can be obtained.
Further, the information of the coverage area of the main signal of the second base station is more accurately determined through the half-power beam width of the second base station and the position information of the second transmitting antenna of the second base station. After the unmanned aerial vehicle is switched to the second base station, the optimal communication signal sent by the second base station can still be obtained.
In some implementations, before obtaining the first information of the first base station multiple times, the method further includes: acquiring frequency range information supported by a first base station; acquiring service information corresponding to the unmanned aerial vehicle; and determining the farthest effective coverage distance of the first base station according to the frequency band information supported by the first base station and/or the service information corresponding to the unmanned aerial vehicle.
Wherein, the farthest effective coverage distance is the farthest coverage distance capable of supporting the networked unmanned aerial vehicle.
For example, the unmanned aerial vehicles are divided according to the service information corresponding to the unmanned aerial vehicles. If the service corresponding to the unmanned aerial vehicle is a cargo inspection service, long-distance flight is needed, and if the service corresponding to the unmanned aerial vehicle is a fixed-point data acquisition service, short-distance flight is needed. Through combining together the frequency channel information that corresponds unmanned aerial vehicle and first basic station support, carry out the comprehensive consideration, can confirm that first basic station can support the furthest's of the unmanned aerial vehicle of networking cover distance, the effective cover distance of furthest promptly, can ensure business data transmission's stability and effect.
In some specific implementations, the service information corresponding to the drone includes: the service type corresponding to the unmanned aerial vehicle, and/or the interference information of the unmanned aerial vehicle when processing the service.
It should be noted that there may be various classification criteria for the classification of the drones. For example, classifying the unmanned aerial vehicle according to the application field of the unmanned aerial vehicle can divide the unmanned aerial vehicle into: military grade unmanned aerial vehicles and civilian grade unmanned aerial vehicles. According to unmanned aerial vehicle's range distance difference, can divide unmanned aerial vehicle into: any one or more of a long-range unmanned aerial vehicle, a medium-range unmanned aerial vehicle, a short-range unmanned aerial vehicle and a super short-range unmanned aerial vehicle.
The service type that unmanned aerial vehicle corresponds is according to unmanned aerial vehicle's application, and/or, unmanned aerial vehicle's range distance is synthesized and is judged, and the service type that this unmanned aerial vehicle can support is closely correlated with its application and range distance. The interference information of the unmanned aerial vehicle during service processing can be interference caused by the fact that when the unmanned aerial vehicle passes through a certain obstacle, the obstacle blocks a communication signal; the interference information may also be interference information corresponding to interference signals sent by other wireless devices and received by the unmanned aerial vehicle. The interference information of the unmanned aerial vehicle when processing the service is only illustrated by way of example, and may be specifically set according to specific situations, and the interference information of other non-illustrated unmanned aerial vehicles when processing the service is also within the protection scope of the present application, and is not described herein again.
Fig. 3 is a schematic structural diagram of an antenna adjustment apparatus of an unmanned aerial vehicle according to an embodiment of the present application, and specific implementation of the apparatus may refer to any one or more of the above embodiments of an antenna adjustment method of an unmanned aerial vehicle, and repeated parts are not described again. It should be noted that the specific implementation of the apparatus in this embodiment is not limited to the above embodiment, and other undescribed embodiments are also within the scope of the apparatus.
As shown in fig. 3, the antenna adjustment device of the unmanned aerial vehicle specifically includes the following modules:
an obtaining module 301, configured to obtain first information of a first base station multiple times, where the first base station is a base station that provides a communication service for an unmanned aerial vehicle, and the first information includes: a signal to interference plus noise ratio (SINR) and first transmit antenna position information of a first base station; a screening module 302 configured to determine target transmit antenna position information according to the SINR obtained multiple times and the first transmit antenna position information; an adjusting module 303 configured to adjust the position of the drone according to the target transmitting antenna position information.
In this embodiment, the screening module screens and obtains the position information of the target transmitting antenna from the position information of the first transmitting antenna obtained multiple times according to the signal-to-interference-plus-noise ratio obtained multiple times and the position information of the first transmitting antenna of the first base station, so as to ensure the accuracy of the obtained position information of the target transmitting antenna; use adjustment module to this target transmitting antenna positional information, adjust unmanned aerial vehicle's antenna in real time, guarantee that unmanned aerial vehicle can acquire optimal communication signal, make unmanned aerial vehicle can carry out reliable and stable communication with first basic station, promote control and management effect to unmanned aerial vehicle.
It should be noted that each module referred to in this embodiment is a logical module, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present application, a unit that is not so closely related to solving the technical problem proposed by the present application is not introduced in the present embodiment, but this does not indicate that no other unit is present in the present embodiment.
Fig. 4 shows a block diagram of an antenna adjustment system of a drone provided in an embodiment of the present application. As shown in fig. 4, the antenna adjustment system 400 of the drone includes the following devices:
a drone 410, a first ground base station 420, and a first ground base station 430. A terrestrial base station 420. The drone 410 includes an onboard terminal 411 and an antenna adjustment device 412.
It should be noted that the on-board terminal 411 may include a 5G communication module for performing wireless communication with the first terrestrial base station 420 or the first terrestrial base station 430.
Specifically, fig. 5 shows a flowchart of a working method of the antenna adjustment system of the unmanned aerial vehicle provided in the embodiment of the present application. As shown in fig. 5, the method specifically includes the following steps.
In step S501, the drone 410 obtains the first information of the first ground base station 420 multiple times through the 5G communication module.
Wherein the first terrestrial base station 420 is a 5G base station, and the first information includes: SINR, first transmit antenna location information of the first ground base station 420, PCI of the first ground base station 420, latitude and longitude information of the transmit antenna of the first ground base station 420, elevation angle of the transmit antenna of the first ground base station 420, and half-power beam width.
It should be noted that, in an antenna pattern, there are usually two lobes or multiple lobes, where a lobe with the largest width is referred to as a main lobe, and the remaining lobes with widths smaller than the main lobe are referred to as side lobes. The angle between the two half-power points of the main lobe can be defined as the lobe width of the antenna directional diagram. Referred to as the half-power (angular) lobe width or half-power beamwidth. If the half-power beam width is narrower, the better the directivity of the antenna is, and the stronger the anti-interference capability is.
In one particular implementation, the drone 410 may obtain the information response fed back by the first ground base station 420 by sending the information request to the first ground base station 420 multiple times, the information response including the first information.
In one specific implementation, before performing step S501, the farthest effective coverage distance of the first terrestrial base station 420 may also be determined by: acquiring frequency band information supported by the first ground base station 420; acquiring service information corresponding to the unmanned aerial vehicle 410; according to the frequency band information supported by the first ground base station 420 and/or the service information corresponding to the drone 410, the farthest effective coverage distance of the first ground base station 420 is determined.
For example, if the service corresponding to the unmanned aerial vehicle 410 is a cargo inspection service, long-distance flight is required, and if the service corresponding to the unmanned aerial vehicle 410 is a fixed-point data acquisition service, short-distance flight is required. By combining the service information corresponding to the drone 410 and the frequency band information supported by the first ground base station 420, and taking comprehensive consideration into consideration, the farthest coverage distance, that is, the farthest effective coverage distance, at which the first ground base station 420 can support the networked drone 410 can be determined. The stability and the effect of service data transmission can be guaranteed.
In step S502, the airborne terminal 411 in the unmanned aerial vehicle 410 determines the coverage area of the main signal of the antenna of the first ground base station 420 according to the first information fed back by the first ground base station 420 acquired for multiple times, and sends an antenna adjustment instruction to the antenna adjustment device 412, so that the antenna adjustment device 412 can adjust the position of the receiving antenna of the unmanned aerial vehicle 410, and it is ensured that the receiving antenna of the unmanned aerial vehicle 410 corresponds to the transmitting antenna of the first ground base station 420.
In one implementation, due to the high speed mobility of the drone 410 in practical applications, the time for the drone 410 to adjust the receiving antenna through the antenna adjustment device 412 is extremely limited, and the power consumption of the antenna adjustment device 412 also needs to occupy the application time of the drone 410. The obtaining of the first information for multiple times may be obtaining the first information fed back by the first terrestrial base station 420 for 3 times or 4 times. The accuracy of the first information is guaranteed, and the phenomenon that the occupied time is too long is avoided.
Wherein, unmanned aerial vehicle's receiving antenna's position adjustment mode can include: sequencing the SINRs to obtain a sequencing result; and selecting target transmitting antenna position information from the plurality of first transmitting antenna position information according to the sequencing result, and adjusting the position of a receiving antenna of the unmanned aerial vehicle according to the target transmitting antenna position information.
For example, the antenna position corresponding to the SINR maximum value in the ranking result is taken as the target transmitting antenna position, so that the accuracy of the target transmitting antenna position can be ensured.
In step S503, the drone 410 acquires RSRP of the first ground base station 420 in real time through the 5G network.
For example, the drone 410 may receive, in real time, the first measurement message sent by the first ground base station 420 through the 5G communication module. Wherein the first measurement message may include the real-time RSRP of the first terrestrial base station 420. The RSRP may be used to determine a change in the strength of the communication signal of the first terrestrial base station 420.
Since the position of the drone 410 is updated in real time, when the drone moves into the coverage of the second ground base station 430, RSRP sent by the second ground base station 430 may also be received.
In step S504, the drone 410 acquires, in real time, RSRP sent by the second ground base station 430 through the 5G network.
For example, the drone 410 may receive, in real time, the second measurement message sent by the second ground base station 430 through the 5G communication module. Wherein the second measurement message comprises the real-time RSRP of the second ground base station 430. The RSRP may be used to determine a change in the strength of the communication signal of the second ground base station 420.
It should be noted that, as the real-time position of the drone 410 changes, the measurement messages of the drone 410 by the first ground base station 420 and the second ground base station 430 also change, and correspondingly, the real-time RSRP of the second ground base station 430 may gradually increase, and the real-time RSRP of the first ground base station 430 may gradually decrease.
In step S505, the drone 410 may successively compare the received real-time RSRP of the first ground base station 420 with the received real-time RSRP of the second ground base station 430. In the case where it is determined that the real-time RSRP of the second terrestrial base station 430 is greater than the real-time RSRP of the first terrestrial base station 430, step S506 is performed.
It should be noted that, if the real-time RSRP of the second ground base station 430 is greater than the real-time RSRP of the first ground base station 430, it indicates that the intensity of the communication signal of the second ground base station 430 is greater than the intensity of the communication signal of the first ground base station 420 at the position where the drone 410 is currently located, and the drone 410 may adjust the active range of the position of its receiving antenna by extraction, so as to eliminate the poor perception during the application process.
In step S506, the drone 410 sends a location request to the second ground base station 430 to obtain the second information of the second ground base station 430.
In step S507, the second ground base station 430 sends a location response to the drone 410 in response to the location request sent by the drone 410.
Wherein the location response includes second information, the second information including: second transmitting antenna position information of the second ground base station 430 and a half-power beam width of the second ground base station 430.
In step S508, the drone 410 determines the main signal coverage area information of the second ground base station 430 according to the half-power beam width of the second ground base station 430 and the second transmitting antenna position information of the second ground base station 430, and switches to the serving cell corresponding to the second ground base station 430 according to the main signal coverage area information of the second ground base station 430.
In one specific implementation, before the drone 410 changes to the second ground base station 430, the drone may further send an information request to the second ground base station 430 multiple times to obtain an information response fed back by the second ground base station 430, where the information response includes second information, and the second information may further include: any one or more of the SINR of the second ground base station 430, the PCI of the second ground base station 430, the latitude and longitude information of the transmitting antenna of the second ground base station 430, and the elevation angle of the transmitting antenna of the second ground base station 430.
By acquiring the second information for multiple times, the unmanned aerial vehicle 410 can accurately acquire the main signal coverage area information of the second ground base station 430, and the success rate of switching is ensured.
In this embodiment, the 5G mobile network is used to acquire the first information of the first ground base station for multiple times, so that the acquired position information of the transmitting antenna of the first ground base station is more accurate, and the receiving antenna of the unmanned aerial vehicle can be dynamically adjusted in real time, so that the position information of the transmitting antenna of the first ground base station corresponds to the receiving antenna of the unmanned aerial vehicle, and the unmanned aerial vehicle can acquire an optimal communication signal; further, combine specific parameters such as SINR and RSRP to ensure that unmanned aerial vehicle's receiving antenna's adjustment strategy is more accurate, furthest's reduction unmanned aerial vehicle makes unmanned aerial vehicle can carry out reliable and stable communication with first ground basic station because of the adverse effect that communication signal intensity's change acted, promotes control and management effect to unmanned aerial vehicle. And, under the condition of confirming that the communication signal of second ground basic station is superior to first ground basic station, can switch to second ground basic station smoothly, guarantee unmanned aerial vehicle's smooth communication.
It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present application, and that the present application is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the application, and these changes and modifications are to be considered as the scope of the application.
Claims (8)
1. An antenna adjustment method for an unmanned aerial vehicle, the method comprising:
acquiring first information of a first base station for multiple times, wherein the first base station is a base station providing communication service for an unmanned aerial vehicle, and the first information comprises a signal to interference plus noise ratio (SINR) and first transmitting antenna position information of the first base station;
determining target transmitting antenna position information according to the SINR and the first transmitting antenna position information which are acquired for multiple times; wherein the target transmitting antenna position information is used for reflecting the position information of the optimal transmitting antenna of the first base station;
adjusting the antenna of the unmanned aerial vehicle according to the position information of the target transmitting antenna; acquiring Reference Signal Received Power (RSRP) of a second base station, wherein the second base station is a base station which provides communication service for the unmanned aerial vehicle after the position of the unmanned aerial vehicle changes, and controlling the unmanned aerial vehicle to be switched to a service cell corresponding to the second base station under the condition that the RSRP of the second base station is determined to be larger than the acquired RSRP of the first base station;
after the RSRP of a second base station is obtained and before the unmanned aerial vehicle is controlled to be switched into a service cell corresponding to the second base station, sending a position request to the second base station to obtain second transmitting antenna position information of the second base station and half-power beam width of the second base station; and determining the main signal coverage area information of the second base station according to the half-power beam width of the second base station and the second transmitting antenna position information of the second base station.
2. The method of claim 1, wherein the determining the target transmit antenna position information according to the SINR obtained multiple times and the first transmit antenna position information comprises:
sequencing the SINRs to obtain a sequencing result;
and selecting the target transmitting antenna position information from the plurality of first transmitting antenna position information according to the sorting result.
3. The method of claim 1, wherein the adjusting the antenna of the drone according to the target transmit antenna location information comprises:
and adjusting the position of a receiving antenna of the unmanned aerial vehicle according to the position information of the target transmitting antenna, so that the receiving antenna of the unmanned aerial vehicle corresponds to the transmitting antenna of the first base station.
4. The method of claim 1, wherein after adjusting the antenna of the drone according to the target transmit antenna location information, further comprising:
and acquiring Reference Signal Received Power (RSRP) of the first base station in real time through a 5G network.
5. The method of claim 1, wherein before obtaining the first information of the first base station a plurality of times, further comprising:
acquiring frequency range information supported by the first base station;
acquiring service information corresponding to the unmanned aerial vehicle;
and determining the farthest effective coverage distance of the first base station according to the frequency band information supported by the first base station and/or the service information corresponding to the unmanned aerial vehicle, wherein the farthest effective coverage distance is the farthest coverage distance capable of supporting networking of the unmanned aerial vehicle.
6. The method of claim 5, wherein the service information corresponding to the UAV comprises: the service type corresponding to the unmanned aerial vehicle, and/or the interference information of the unmanned aerial vehicle when processing the service.
7. The method of claim 1, wherein the first information further comprises: any one or more of the physical cell identifier of the first base station, the latitude and longitude information of the transmitting antenna of the first base station, the elevation angle and the half-power beam width of the transmitting antenna of the first base station.
8. An unmanned aerial vehicle's antenna adjusting device which characterized in that includes:
an obtaining module configured to obtain first information of a first base station multiple times, where the first base station is a base station providing a communication service for an unmanned aerial vehicle, and the first information includes: a signal to interference plus noise ratio, SINR, and first transmit antenna position information of the first base station;
the screening module is configured to determine target transmitting antenna position information according to the SINR and the first transmitting antenna position information acquired for multiple times; wherein the target transmitting antenna position information is used for reflecting the position information of the optimal transmitting antenna of the first base station;
an adjusting module configured to adjust a position of the drone according to the target transmit antenna position information; acquiring Reference Signal Received Power (RSRP) of a second base station, wherein the second base station is a base station which provides communication service for the unmanned aerial vehicle after the position of the unmanned aerial vehicle changes, and controlling the unmanned aerial vehicle to be switched to a service cell corresponding to the second base station under the condition that the RSRP of the second base station is determined to be larger than the acquired RSRP of the first base station;
after the RSRP of a second base station is obtained and before the unmanned aerial vehicle is controlled to be switched into a service cell corresponding to the second base station, sending a position request to the second base station to obtain second transmitting antenna position information of the second base station and half-power beam width of the second base station; and determining the main signal coverage area information of the second base station according to the half-power beam width of the second base station and the second transmitting antenna position information of the second base station.
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| US9295006B2 (en) * | 2011-02-09 | 2016-03-22 | Qualcomm Incorporated | Real-time calibration of an air to ground communication system |
| US8811522B2 (en) * | 2012-05-29 | 2014-08-19 | Magnolia Broadband Inc. | Mitigating interferences for a multi-layer MIMO system augmented by radio distribution network |
| CN106937300B (en) * | 2015-12-29 | 2019-11-22 | 上海无线通信研究中心 | A kind of method of dynamic and intelligent adjustment Downtilt |
| WO2018053876A1 (en) * | 2016-09-26 | 2018-03-29 | 深圳市大疆创新科技有限公司 | Antenna selection method, apparatus and video glasses |
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