CN112448751A - Airspace wireless signal quality detection method, unmanned aerial vehicle and ground center system - Google Patents
Airspace wireless signal quality detection method, unmanned aerial vehicle and ground center system Download PDFInfo
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- CN112448751A CN112448751A CN201910803018.8A CN201910803018A CN112448751A CN 112448751 A CN112448751 A CN 112448751A CN 201910803018 A CN201910803018 A CN 201910803018A CN 112448751 A CN112448751 A CN 112448751A
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Abstract
The invention discloses an airspace wireless signal quality detection method, an unmanned aerial vehicle and a ground center system. The unmanned aerial vehicle for detecting the airspace wireless signal quality comprises a power supply device and a wireless signal testing device connected with the power supply device; the wireless signal testing device is used for receiving a signal quality data acquisition request sent by the ground center system, acquiring signal quality data of wireless signals in a network coverage airspace according to the signal quality data acquisition request, and sending the signal quality data to the ground center system. According to the embodiment of the invention, the quality detection of the airspace wireless signals can be completed at low cost.
Description
Technical Field
The invention belongs to the field of airspace wireless signal quality detection, and particularly relates to an unmanned aerial vehicle for airspace wireless signal quality detection, a ground center system, an airspace wireless signal quality detection method and an airspace wireless signal quality detection system.
Background
Quality testing of radio signals is a task that mobile operators must often perform. The quality test of the wireless signals on the ground is carried out by using a drive test recorder. The quality test of wireless signals in airspace adopts miniature unmanned aerial vehicle to carry on portable mobile communication signal quality testing arrangement and detects at present, can realize carrying out the quality test to wireless signal in the 30-120 meters scope, for wireless signal covers the optimization and provides the reference, is favorable to improving the communication quality in miniature unmanned aerial vehicle flight airspace.
In the deployment of the 5G base station for low-altitude networking coverage, the test of the mobile signal in the low-altitude space of 120-500 meters becomes a blind spot region, and an efficient and rapid measurement means is lacked. If the on-ground drive test recorder is simply moved to the air, an independent power supply needs to be configured, and the micro unmanned aerial vehicle is difficult to bear the drive test recorder to fly in the 120-plus-500-meter airspace. As shown in fig. 1, fig. 1 is a schematic structural diagram of a low-altitude airspace unmanned aerial vehicle wireless signal testing device provided in the prior art, the testing device for the wireless signal is mounted on a micro unmanned aerial vehicle, an independent MTK6582 development board and a GPS module (not shown in fig. 1) are adopted, a portable battery is used for independent power supply, no electrical connection is performed with a micro unmanned aerial vehicle body, no data interaction is performed with the unmanned aerial vehicle, and the micro unmanned aerial vehicle is difficult to bear the testing device for the wireless signal and fly in an airspace of 120 and 500 meters.
However, even if some high-power gyroplanes can carry the road test recorder reluctantly, the short flight time makes it difficult to complete the quality test of the wireless signals in the airspace, and the flight cost of the gyroplanes is high.
Therefore, how to perform quality detection of spatial domain wireless signals at low cost is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides an unmanned aerial vehicle for detecting the quality of an airspace wireless signal, a ground center system, an airspace wireless signal quality detection method and an airspace wireless signal quality detection system, which can complete the quality detection of the airspace wireless signal at low cost.
In a first aspect, an unmanned aerial vehicle for airspace wireless signal quality detection is provided, and comprises a power supply device and a wireless signal testing device connected with the power supply device;
the wireless signal testing device is used for receiving a signal quality data acquisition request sent by the ground center system, acquiring signal quality data of wireless signals in a network coverage airspace according to the signal quality data acquisition request, and sending the signal quality data to the ground center system.
Optionally, the wireless signal testing device includes a 5G terminal, and a wireless signal tester connected to the 5G terminal through a USB, an ethernet, or a serial port;
the wireless signal tester is used for collecting signal quality data;
the 5G terminal is used for sending the signal quality data to the ground center system and sending the signal quality data to the ground center system with low time delay.
Optionally, the unmanned aerial vehicle further comprises a positioning device, and the positioning device is synchronized with the time of the wireless signal testing device; the positioning device is used for receiving a position information data acquisition request sent by the ground center system, acquiring position information data of a wireless signal according to the position information data acquisition request, sending the position information data to the ground center system or the wireless signal testing device, and obtaining a 3D heat point diagram of signal quality.
Optionally, the wireless signal testing device is further configured to acquire the position information data, and combine the signal quality data and the position information data to obtain combined data, so as to establish a corresponding 3D hotspot graph.
Optionally, the positioning device is a high-precision satellite positioning module, and can acquire position information data more accurately.
Optionally, the unmanned aerial vehicle further comprises a direct current transformation module, and the direct current transformation module is connected with the power supply device and the wireless signal testing device respectively and used for adjusting direct current voltage.
In a second aspect, there is provided a ground-based centre system for:
sending a signal quality data acquisition request to a wireless signal testing device of the unmanned aerial vehicle, so that the wireless signal testing device acquires signal quality data of wireless signals in a network coverage airspace according to the signal quality data acquisition request; the wireless signal testing device is connected with a power supply device of the unmanned aerial vehicle;
and receiving signal quality data sent by the wireless signal testing device.
Optionally, the ground center system is further configured to:
sending a position information data acquisition request to a positioning device of the unmanned aerial vehicle, so that the positioning device acquires position information data of the wireless signal according to the position information data acquisition request; the positioning device is time-synchronized with the wireless signal testing device;
receiving position information data sent by a positioning device;
and combining the signal quality data and the position information data to obtain combined data so as to establish a corresponding 3D heat point diagram.
In a third aspect, a method for detecting the quality of an airspace wireless signal based on the unmanned aerial vehicle in any one of the first aspect is provided, and includes:
receiving a signal quality data acquisition request sent by a ground center system;
and acquiring signal quality data of the wireless signals in the network coverage airspace according to the signal quality data acquisition request, and transmitting the signal quality data to the ground center system.
Optionally, the spatial domain wireless signal quality detection method further includes:
receiving a position information data acquisition request sent by a ground center system;
and acquiring the position information data of the wireless signal according to the position information data acquisition request, and sending the position information data to a ground center system or storing the position information data.
Optionally, after the storing the location information data, the method further includes:
and merging the signal quality data and the position information data to obtain merged data so as to establish a corresponding 3D hotspot graph.
In a fourth aspect, a spatial domain wireless signal quality detection method based on the ground center system in any one of the second aspects is provided, and includes:
sending a signal quality data acquisition request to a wireless signal testing device of the unmanned aerial vehicle;
and receiving signal quality data sent by the wireless signal testing device.
Optionally, the spatial domain wireless signal quality detection method further includes:
sending a position information data acquisition request to a positioning device of the unmanned aerial vehicle;
receiving position information data sent by a positioning device;
and combining the signal quality data and the position information data to obtain combined data so as to establish a corresponding 3D heat point diagram.
In a fifth aspect, there is provided an airspace wireless signal quality detection system, comprising a drone according to any one of the first aspects, and a ground-centric system according to any one of the second aspects.
The unmanned aerial vehicle for detecting the airspace wireless signal quality, the ground center system, the airspace wireless signal quality detection method and the airspace wireless signal quality detection system can complete the quality detection of the airspace wireless signal at low cost. Above-mentioned radio signal testing arrangement is connected with the power supply unit among the unmanned aerial vehicle, is supplied power for radio signal testing arrangement by this power supply unit, so radio signal testing arrangement compares in correlation technique need not to dispose independent power, has alleviateed unmanned aerial vehicle's weight and has detected in order to realize the quality to higher airspace radio signal, has reduced the cost that airspace radio signal quality detected moreover.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a wireless signal testing device of a low-altitude airspace unmanned aerial vehicle provided in the prior art;
fig. 2 is a schematic structural diagram of an unmanned aerial vehicle for airspace wireless signal quality detection according to an embodiment of the present invention;
fig. 3 is a flowchart of an airspace wireless signal quality detection method based on an unmanned aerial vehicle according to another embodiment of the present invention;
fig. 4 is a flowchart of a spatial domain wireless signal quality detection method based on a ground center system according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a spatial domain wireless signal quality detection system according to another embodiment of the present invention;
FIG. 6 is a flow chart of data merging on the ground according to another embodiment of the present invention;
fig. 7 is a flow chart of data merging over the air according to another embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention 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 invention by illustrating examples of the present invention.
It should be noted that, in this document, the term "comprises/comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In order to solve the prior art problems, the embodiment of the invention provides an unmanned aerial vehicle for detecting the quality of an airspace wireless signal, a ground center system, an airspace wireless signal quality detection method and an airspace wireless signal quality detection system. The following first introduces the unmanned aerial vehicle for detecting the quality of the airspace wireless signal provided by the embodiment of the invention. Fig. 2 is a schematic structural diagram of an unmanned aerial vehicle for detecting quality of an airspace wireless signal according to an embodiment of the present invention. As shown in fig. 2, the drone 201 includes a power supply device 202, and a wireless signal testing device 203 connected to the power supply device 202.
The wireless signal testing device 203 is configured to receive a signal quality data acquisition request sent by the ground center system, acquire signal quality data of a wireless signal in a network coverage area according to the signal quality data acquisition request, and send the signal quality data to the ground center system.
It should be noted that, the power supply device 202 not only supplies power to the wireless signal testing device 203, but also supplies power to other power consumption devices (e.g., a rotor device) of the unmanned aerial vehicle 201, so compared with the prior art that an independent power supply device is not required to be configured for the wireless signal testing device 203, the weight of the unmanned aerial vehicle 201 is reduced, and then the unmanned aerial vehicle 201 can fly in a higher airspace (e.g., 120 plus 500 m airspace) to perform wireless signal quality detection for a longer time, thereby avoiding using a high-power rotor unmanned aerial vehicle with a shorter flight time, and further saving the flight cost of using the high-power rotor unmanned aerial vehicle. In addition, since it is not necessary to configure a separate power supply device for the wireless signal testing device 203, the cost for configuring a separate power supply device is saved.
The power supply device 202 may be a dc power supply device or an ac power supply device. If the power supply device 202 is a direct-current power supply device, the wireless signal testing device 203 is a power-using device that operates using direct current; if the power supply device 202 is an alternating current power supply device, the wireless signal testing device 203 is an electric device using alternating current.
In one embodiment, the power supply device 202 may be a dc power supply device, and the wireless signal testing device 203 is an electric device using ac power, or the power supply device 202 is an ac power supply device and the wireless signal testing device 203 is an electric device using dc power, in which case, the power supply device 202 supplies power to the wireless signal testing device 203, and it is necessary to convert the dc power or ac power supplied from the power supply device 202 into ac power or dc power that can be used by the wireless signal testing device 203 through a converter.
Further, before the power supply device 202 is connected to the wireless signal testing device 203, it may be detected whether the power supply voltage of the power supply device 202 meets the rated voltage of the wireless signal testing device 203, and if the power supply voltage of the power supply device 202 meets the rated voltage of the wireless signal testing device 203, the power supply device may be directly connected to the wireless signal testing device 203, or may be indirectly connected to the wireless signal testing device 203 through one or more loads; if the power supply voltage of the power supply device 202 does not satisfy the rated voltage of the wireless signal testing device 203: when the power supply device 202 is a dc power supply device and the wireless signal testing device 203 is a dc power device, the power supply device 202 may be connected to the wireless signal testing device 203 through a dc transformer, wherein the dc transformer is a dc transformer module for adjusting dc voltage; when the power supply device 202 is an ac power supply device and the wireless signal testing device 203 is an ac powered device, the power supply device 202 may be connected to the wireless signal testing device 203 through an ac transformer, wherein the ac transformer is an ac transforming module for adjusting an ac voltage.
Because the drone 201 may fly higher airspace for longer time wireless signal quality detection, the drone 201 may perform quality detection on 5G network signals in the airspace that is 300 meters or more relative to the ground. By utilizing the beamforming technology of the 5G network, the 5G network signal can cover the height of 300-500 meters, and the higher height can be achieved with the deployment of the 5G low-altitude networking coverage. However, 2G, 3G, and 4G network signals in the space over 300 meters relative to the ground are not covered, so the conventional wireless signal testing device uses a 4G/3G/2G cellular network to transmit the test data back to the ground, and the test data is not transmitted back to the ground data processing device in real time. Therefore, in one embodiment, in order to transmit the signal quality data to the ground center system with low delay, the wireless signal testing device 203 may include a 5G terminal, a wireless signal tester connected with the 5G terminal through USB or ethernet or serial port (RS232/RS485/RS 422/UART); the wireless signal tester is used for collecting signal quality data; and the 5G terminal is used for sending the signal quality data to the ground center system. The 5G terminal can support a 5G communication module of a 3GPP R15/R16 protocol and can support mobile access, the theoretical bandwidth can be uplink 1Gbps and downlink 4Gbps, signal quality data can be sent to a ground central system through a 5G network to be processed in real time, then a wireless signal quality detection strategy can be adjusted in time, a wireless signal quality state can be obtained in real time, and time delay can be less than 10ms on the premise that a core network moves downwards.
In one embodiment, to obtain the location information data of the wireless signal, the drone 201 may further include a positioning device that is time-synchronized with the wireless signal testing device 203; the positioning device is used for receiving a position information data acquisition request sent by the ground center system, acquiring position information data of a wireless signal according to the position information data acquisition request, and sending the position information data to the ground center system or the wireless signal testing device 203. The positioning means may be a satellite positioning module or a combination of a satellite positioning module and a base station positioning module. The satellite positioning module can include big dipper positioning module, GPS orientation module, and GPS orientation module can include high accuracy satellite positioning module. Since the positioning accuracy of the high-precision satellite positioning module is higher than the meter-level positioning accuracy of a common positioning module in the related art, in order to obtain more accurate position information data, the high-precision satellite positioning module can be used as a positioning device, and specifically, a Real-time kinematic (RTK) positioning module can be used as a positioning device.
After the positioning device sends the location information data to the ground center system or the wireless signal testing device 203, in an embodiment, the wireless signal testing device 203 is further configured to obtain the location information data, and combine the signal quality data and the location information data to obtain combined data to establish a corresponding 3D hotspot graph. Further, in order to establish a more accurate 3D hotspot graph of signal quality, any signal quality data and corresponding target location information data may be merged to obtain merged data, where the target location information data is location information data with a timestamp having a minimum time interval with the timestamp of the signal quality data.
The embodiment of the present invention further provides a ground center system corresponding to the above unmanned aerial vehicle, which specifically includes: 5G basic station, passback net, core network and ground data processing equipment, this ground central system is used for: sending a signal quality data acquisition request to the wireless signal testing device 203 of the unmanned aerial vehicle 201, so that the wireless signal testing device 203 acquires the signal quality data of the wireless signal in the network coverage airspace according to the signal quality data acquisition request; wherein, the wireless signal testing device 203 is connected with the power supply device 202 of the unmanned aerial vehicle 201; the signal quality data transmitted by the wireless signal testing device 203 is received.
Further, in one embodiment, the ground center system is further configured to: sending a position information data acquisition request to a positioning device of the unmanned aerial vehicle 201, so that the positioning device acquires position information data of the wireless signal according to the position information data acquisition request; wherein, the positioning device is time-synchronized with the wireless signal testing device 203; receiving position information data sent by a positioning device; and combining the signal quality data and the position information data to obtain combined data so as to establish a corresponding 3D heat point diagram.
Corresponding to the device embodiment of the unmanned aerial vehicle, the embodiment of the invention also provides an airspace wireless signal quality detection method based on the unmanned aerial vehicle. As shown in fig. 3, fig. 3 is a flowchart of an airspace wireless signal quality detection method based on an unmanned aerial vehicle according to another embodiment of the present invention, where the airspace wireless signal quality detection method includes:
s301, receiving a signal quality data acquisition request sent by the ground center system.
S302, acquiring signal quality data of wireless signals in a network coverage airspace according to the signal quality data acquisition request, and sending the signal quality data to a ground center system.
In one embodiment, the signal quality data may be collected in real time according to the signal quality data collection request, and may also be collected at intervals of a preset period. To facilitate recording of a time stamp for each acquired signal quality data, it may be usual to time t2After signal quality data are acquired for the first time at the moment, a preset period (set as T) is set to be separated2) Signal quality data is collected so that the time stamp of the successively collected signal quality data is t2+nT2(n is 0,1,2,3.. and n is an integer). Specifically, T may be set2＝1s。
In order to establish a 3D hotspot graph of signal quality, in one embodiment, the method may further include:
and receiving a position information data acquisition request sent by the ground center system.
And acquiring the position information data of the wireless signal according to the position information data acquisition request, and sending the position information data to a ground center system or storing the position information data.
The position information data of the wireless signals can be collected in real time according to the position information data collection request, and the position information data can be collected at intervals of a preset period. To facilitate recording of a time stamp for each acquisition of location information data, it may be usual to time t1After the position information data is collected for the first time at the moment, a preset period (set as T) is set to be arranged1) Position information data are collected so that the time stamp of the position information data collected in sequence is t1+nT1(n is 0,1,2,3.. and n is an integer). To establish a more accurate 3D hotspot graph of signal quality, T may be ordered1＜T2. Specifically, T may be set1＝0.2s。
After saving the location information data, in one embodiment, it may further include: and merging the signal quality data and the position information data to obtain merged data so as to establish a corresponding 3D hotspot graph, wherein the 3D hotspot graph can intuitively reflect the corresponding relation between the spatial position and the wireless signal quality. Further, in order to establish a more accurate 3D hotspot graph of signal quality, any signal quality data and corresponding target location information data may be merged to obtain merged data; the target position information data is position information data with the smallest time interval between the time stamp and the time stamp of the signal quality data. Since the execution subject of the embodiment is the unmanned aerial vehicle for airspace wireless signal quality detection, the combination of the signal quality data and the position information data is realized in the air.
Corresponding to the device embodiment of the ground center system, the embodiment of the invention also provides an airspace wireless signal quality detection method based on the ground center system. As shown in fig. 4, fig. 4 is a flowchart of a spatial domain wireless signal quality detection method based on a ground center system according to another embodiment of the present invention, where the spatial domain wireless signal quality detection method includes:
s401, sending a signal quality data acquisition request to a wireless signal testing device of the unmanned aerial vehicle.
S402, receiving the signal quality data sent by the wireless signal testing device.
Since step S401 corresponds to step S301 and step S402 corresponds to step S302, some relevant contents can be referred to above and are not described herein again.
In order to establish a 3D hotspot graph of signal quality, in one embodiment, the method may further include: sending a position information data acquisition request to a positioning device of the unmanned aerial vehicle; receiving position information data sent by a positioning device; and combining the signal quality data and the position information data to obtain combined data so as to establish a corresponding 3D heat point diagram. Further, in order to establish a more accurate 3D hotspot graph of signal quality, any signal quality data and corresponding target location information data may be merged to obtain merged data; the target position information data is position information data with the smallest time interval between the time stamp and the time stamp of the signal quality data. Since the main implementation of the present embodiment is a ground-centric system, the combination of the signal quality data and the location information data is implemented on the ground.
The embodiment of the invention also provides an airspace wireless signal quality detection system, which comprises the unmanned aerial vehicle and the ground center system shown in the figure 2, and is shown in the figure 5.
Fig. 5 is a schematic structural diagram of a spatial domain wireless signal quality detection system according to another embodiment of the present invention. The airspace wireless signal quality detection system comprises: unmanned aerial vehicles (i.e., aerial signal testing systems) and ground-centric systems.
The ground center system includes: the system comprises a 5G base station, a return network, a core network, a return network and ground data processing equipment.
The aerial signal test system includes: unmanned aerial vehicle's power supply unit, direct current vary voltage module, positioner, wireless signal testing arrangement (including wireless signal tester and 5G terminal). The wireless signal tester and the 5G terminal can be two independent devices connected through a USB or Ethernet or a serial port (RS232/RS485/RS422/UART), or can be one device integrated into a whole; the wireless signal tester and the positioning device can perform data transmission through a USB (universal serial bus), an Ethernet or a serial port (RS232/RS485/RS422/UART) based on a TCP/IP protocol, and IP addresses of two devices are in the same subnet; direct current vary voltage module can convert power supply unit's supply voltage 25V DC into 12V DC and give the power supply for the radio signal tester to remove from and dispose independent portable power for the radio signal tester, and then effectively improve miniature unmanned aerial vehicle's flying height and enlarge its flight range, the flight task that radio signal detected is accomplished to more efficient.
For example, a certain brand of security 6-rotor micro unmanned aerial vehicle (with a maximum takeoff weight of 17kg) has a power consumption of 4kw, while a wireless signal tester has a power consumption of 40 w. If the power supply of the unmanned aerial vehicle supplies power to the wireless signal tester, the power consumption of the wireless signal tester only accounts for 1% of the power consumption of the unmanned aerial vehicle, and the unmanned aerial vehicle can fly for about 15 minutes by carrying the wireless signal tester. If the wireless signal tester is configured with the independent power supply, the maximum load of the unmanned aerial vehicle is 3kg, the weight of the wireless signal tester is 1kg, and the weight of the configured independent power supply is 1.7kg, so that the unmanned aerial vehicle carrying the independent power supply and the wireless signal tester is close to full load, can fly for about 2 minutes, and is difficult to detect the quality of wireless signals. If the independent power supply configured for the wireless signal tester is omitted, the weight of the aerial signal testing system can be reduced by more than 60% due to the fact that the 1.7/2.7 is 63%, the flying height of the micro unmanned aerial vehicle is effectively improved, the flying range of the micro unmanned aerial vehicle is enlarged, and the flying task of the signal testing is completed more efficiently.
Before the wireless signal quality detection is carried out, time synchronization configuration needs to be carried out on the wireless signal tester and the positioning device of the unmanned aerial vehicle. The specific time synchronization configuration method comprises the following steps: 1) configuring a wireless signal tester as a Time synchronization server and a positioning device of an unmanned aerial vehicle as a Time synchronization client based on a Network Time Protocol (NTP); 2) and starting the time synchronization server and the time synchronization client, and realizing time synchronization of the wireless signal tester and the positioning device through information interaction between the time synchronization server and the time synchronization client, wherein the time synchronization precision can reach 1ms level.
After the time synchronization configuration of the wireless signal tester and the positioning device is completed, the wireless signal quality detection and the combination of the signal quality data and the position information data are carried out. In one embodiment, the combination of the signal quality data and the position information data may be performed on the ground, see fig. 6, where fig. 6 is a flowchart illustrating a data combination process performed on the ground according to another embodiment of the present invention. As can be seen from fig. 6, the ground data processing device starts the test and performs initialization to prepare for communication; after the ground data processing equipment informs a positioning device and a wireless signal tester of the unmanned aerial vehicle to start testing, the positioning device and the wireless signal tester respectively start a time synchronization client and a time synchronization server; the positioning device and the wireless signal tester finish time synchronization and then inform each other, and the wireless signal tester sends a time synchronization completion notice to the ground data processing equipment; the ground data processing equipment informs the positioning device of collecting position information data and informs the wireless signal tester of collecting signal quality data; positioning device interval T1(may be provided with T)10.2s) time acquisition position information data with time stamp t1+nT1(n is 0,1,2,3 … …, n is an integer, t1Indicating the time when the position information data is initially collected), and transmitting the position information data to the ground data processing device through the 5G network, where the content of the transmitted position information data may include: message number, message sequence number, positioning signal type, latitude location information, longitude location information, vertical location information, timestamp. The positioning accuracy of the latitude position information, the longitude position information and the vertical position information may be in the centimeter level or in a higher accuracy level. Wireless signal tester interval T2(may be provided with T)21s) time-acquisition signal quality data with a time stamp t2+nT2(n is 0,1,2,3 … …, n is an integer, t2The time for acquiring the signal quality data for the first time) and sending the signal quality data to ground data processing equipment through a 5G network; the surface data processing device combines any one of the signal quality data with corresponding target location data, wherein the time stamp of the target location data is the smallest time interval from the time stamp of the signal quality data. In addition, to prevent synchronization failure, it may be checked whether the time stamp error of the signal quality data and the target location data is at T1Within a time interval.
In another embodiment, the combining of the signal quality data and the location information data is performed over the air, as shown in fig. 7, and fig. 7 is a flow chart of data combining over the air according to another embodiment of the present invention. The same contents in fig. 7 as those in fig. 6 will not be described again. As can be seen in FIG. 7, the positioning device spacing T1(may be provided with T)10.2s) time, sending the position information data to a wireless signal tester by adopting a triggering data collection method; wireless signal tester interval T2(may be provided with T)21s) time-acquisition signal quality data with a time stamp t2+nT2(n is 0,1,2,3 … …, n is an integer, t2Representing the time of initial acquisition of signal quality data), combining any signal quality data with corresponding target position data to obtain combined data, wherein the time of the target position dataA timestamp time interval between a timestamp and the signal quality data is minimized; the wireless signal tester sends the combined data to the ground data processing equipment through the 5G network.
After merging any one of the signal quality data and the corresponding target position data to obtain merged data, the ground data processing device may establish a corresponding 3D hotspot graph based on all the merged data.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (14)
1. An unmanned aerial vehicle for detecting the quality of airspace wireless signals is characterized by comprising a power supply device and a wireless signal testing device connected with the power supply device;
the wireless signal testing device is used for receiving a signal quality data acquisition request sent by a ground center system, acquiring signal quality data of wireless signals in a network coverage airspace according to the signal quality data acquisition request, and sending the signal quality data to the ground center system.
2. The unmanned aerial vehicle of claim 1, wherein the wireless signal testing device comprises a 5G terminal, and a wireless signal tester connected with the 5G terminal through a USB (universal serial bus), an Ethernet or a serial port;
the wireless signal tester is used for collecting the signal quality data;
and the 5G terminal is used for sending the signal quality data to the ground center system.
3. The drone of claim 1, further comprising a positioning device that is time synchronized with the wireless signal testing device; the positioning device is used for receiving a position information data acquisition request sent by the ground center system, acquiring position information data of the wireless signal according to the position information data acquisition request, and sending the position information data to the ground center system or the wireless signal testing device.
4. The drone of claim 3, wherein the wireless signal testing device is further configured to obtain the location information data and combine the signal quality data and the location information data to obtain combined data to establish a corresponding 3D hotspot graph.
5. A drone according to claim 3, characterised in that the positioning device is a high precision satellite positioning module.
6. The unmanned aerial vehicle of any one of claims 1 to 5, further comprising a DC transformer module, the DC transformer module being connected to the power supply device and the wireless signal testing device, respectively, for regulating DC voltage.
7. A ground center system, the ground center system configured to:
sending a signal quality data acquisition request to a wireless signal testing device of the unmanned aerial vehicle, so that the wireless signal testing device acquires signal quality data of wireless signals in a network coverage airspace according to the signal quality data acquisition request; the wireless signal testing device is connected with a power supply device of the unmanned aerial vehicle;
and receiving the signal quality data sent by the wireless signal testing device.
8. The ground center system of claim 7, further configured to:
sending a position information data acquisition request to a positioning device of the unmanned aerial vehicle, so that the positioning device acquires the position information data of the wireless signal according to the position information data acquisition request; wherein the positioning device is time-synchronized with the wireless signal testing device;
receiving the position information data sent by the positioning device;
and combining the signal quality data and the position information data to obtain combined data so as to establish a corresponding 3D heat point diagram.
9. The method for detecting the quality of the wireless signals in the airspace based on the unmanned aerial vehicle of any one of claims 1 to 6, comprising:
receiving a signal quality data acquisition request sent by a ground center system;
and acquiring signal quality data of wireless signals in a network coverage airspace according to the signal quality data acquisition request, and sending the signal quality data to the ground center system.
10. The spatial domain wireless signal quality detection method according to claim 9, further comprising:
receiving a position information data acquisition request sent by the ground center system;
and acquiring the position information data of the wireless signal according to the position information data acquisition request, and sending the position information data to the ground center system or storing the position information data.
11. The spatial domain wireless signal quality detection method according to claim 10, further comprising, after storing the location information data:
and merging the signal quality data and the position information data to obtain merged data so as to establish a corresponding 3D hotspot graph.
12. The method for detecting the quality of an airspace wireless signal based on the ground center system of claim 7 or 8, comprising:
sending a signal quality data acquisition request to a wireless signal testing device of the unmanned aerial vehicle;
and receiving the signal quality data sent by the wireless signal testing device.
13. The spatial domain wireless signal quality detection method according to claim 12, further comprising:
sending a position information data acquisition request to a positioning device of the unmanned aerial vehicle;
receiving position information data sent by the positioning device;
and combining the signal quality data and the position information data to obtain combined data so as to establish a corresponding 3D heat point diagram.
14. An airspace wireless signal quality detection system, comprising the drone of any one of claims 1 to 6, and the ground-centric system of claim 7 or 8.
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| CN201910803018.8A CN112448751A (en) | 2019-08-28 | 2019-08-28 | Airspace wireless signal quality detection method, unmanned aerial vehicle and ground center system |
| PCT/CN2020/112136 WO2021037210A1 (en) | 2019-08-28 | 2020-08-28 | Airspace wireless signal quality measurement method, unmanned aerial vehicle, and ground center system |
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