Method, apparatus and device for determining base station coverage range, and storage medium

Abstract

The application discloses a base station coverage range determination method, device, equipment and storage medium. The method comprises the following steps: obtaining the vertex position of a first base station, the flight height of a UAV, and the first position and the second position of the main beam of the antenna of the first base station; the first position represents the position where the gain of the main beam increases by 3dB; the second position represents the position where the gain of the main beam decreases by 3dB; determining the first coverage distance of the main beam of the antenna based on the first position, the vertex position of the first base station and the flight height of the UAV; determining the second coverage distance of the main beam of the antenna based on the second position, the vertex position of the first base station and the flight height of the UAV; determining the coverage range of the first base station by using the first coverage distance and the second coverage distance; and the UAV can stably fly within the coverage range of the first base station.

Description

TECHNICAL FIELD

[0001] The present application relates to the wireless technology field, and in particular to a base station coverage range determination method, device, equipment and storage medium. BACKGROUND

[0002] At present, the unmanned aerial vehicle operation has been gradually applied in logistics, surveying and mapping, inspection, live broadcast and other fields, and the information transmission demand has evolved from unified back transmission after flight to content real-time back transmission, and the demand for high-quality mobile network is increasingly urgent. In order to meet the business development needs of unmanned aerial vehicles, it is necessary to rely on ground base stations to implement low-altitude network coverage. In the process of realizing low-altitude network coverage, due to the fragmented coverage of low-altitude network, the unmanned aerial vehicle will receive signals from multiple cells during flight, thereby frequent handover occurs. SUMMARY

[0003] Therefore, the embodiments of the present application expect to provide a base station coverage range determination method, device, equipment and storage medium.

[0004] The technical scheme of the embodiments of the present application is as follows:

[0005] At least one embodiment of the present application provides a base station coverage range determination method, which comprises:

[0006] obtaining a vertex position of a first base station, a flight height of an unmanned aerial vehicle, and a first position and a second position of an antenna main beam of the first base station; the first position represents a position where the gain of the antenna main beam rises by 3dB; the second position represents a position where the gain of the antenna main beam drops by 3dB;

[0007] determining a first coverage distance of the antenna main beam based on the first position, the vertex position of the first base station and the flight height of the unmanned aerial vehicle, and determining a second coverage distance of the antenna main beam based on the second position, the vertex position of the first base station and the flight height of the unmanned aerial vehicle;

[0008] determining the coverage range of the first base station by using the first coverage distance and the second coverage distance; the unmanned aerial vehicle can stably fly within the coverage range of the first base station.

[0009] In addition, according to at least one embodiment of the present application, the determination of the first coverage distance of the antenna main beam based on the first position, the vertex position of the first base station and the flight height of the unmanned aerial vehicle comprises:

[0010] determining a first angle by using the first position and the vertex position; the first angle represents the included angle between the line connecting the first position and the vertex position and the horizontal direction;

[0011] determining a height difference between the flight height of the UAV and the apex position of the first base station;

[0012] determining a first distance using the first angle and the height difference; the first distance representing a distance of a line between the first position and the apex position;

[0013] determining a first coverage distance of the main beam of the antenna based on the first distance.

[0014] In addition, according to at least one embodiment of the present application, the determining the first coverage distance of the main beam of the antenna based on the first distance comprises:

[0015] determining a horizontal distance between the first base station and the vertical projection of the UAV;

[0016] determining the first coverage distance of the main beam of the antenna using the first distance and the horizontal distance.

[0017] In addition, according to at least one embodiment of the present application, the determining the second coverage distance of the main beam of the antenna based on the second position, and the apex position of the first base station and the flight height of the UAV comprises:

[0018] determining a second angle using the second position of the main beam of the antenna and the apex position of the first base station; the second angle representing an included angle between a line between the second position and the apex position and a horizontal direction;

[0019] determining a height difference between the flight height of the UAV and the apex position of the first base station;

[0020] determining a second distance using the second angle and the height difference; the second distance representing a distance of a line between the second position and the apex position;

[0021] determining a second coverage distance of the main beam of the antenna based on the second distance.

[0022] In addition, according to at least one embodiment of the present application, the determining the second coverage distance of the main beam of the antenna based on the second distance comprises:

[0023] determining a horizontal distance between the first base station and the vertical projection of the UAV;

[0024] determining the second coverage distance of the main beam of the antenna using the second distance and the horizontal distance.

[0025] In addition, according to at least one embodiment of the present application, the method further comprises:

[0026] determining a third coverage distance and a fourth coverage distance of an antenna main lobe of a second base station; the third coverage distance is determined by using a vertex position of the second base station, a flight height of the unmanned aerial vehicle and a third position of the antenna main lobe of the second base station; the fourth coverage distance is determined by using the vertex position of the second base station, the flight height of the unmanned aerial vehicle and a fourth position of the antenna main lobe of the second base station; the third position represents a position where the gain of the antenna main lobe rises by 3dB; the fourth position represents a position where the gain of the antenna main lobe falls by 3dB;

[0027] determining the interval between the second base station and the first base station by using the third coverage distance and the fourth coverage distance, and the first coverage distance and the second coverage distance.

[0028] In addition, according to at least one embodiment of the present application, the determination of the interval between the second base station and the first base station by using the third coverage distance and the fourth coverage distance, and the first coverage distance and the second coverage distance comprises:

[0029] obtaining a difference value by subtracting the first coverage distance from the third coverage distance; and determining the interval between the second base station and the first base station by using the obtained difference value.

[0030] Alternatively,

[0031] obtaining a difference value by subtracting the fourth coverage distance from the second coverage distance; and determining the interval between the second base station and the first base station by using the obtained difference value.

[0032] In addition, according to at least one embodiment of the present application, the method further comprises:

[0033] obtaining a minimum signal strength required by the unmanned aerial vehicle for the coverage of the first base station;

[0034] determining a fifth coverage distance of the antenna main lobe by using the minimum signal strength.

[0035] when the fifth coverage distance is less than the second coverage distance, re-determining the coverage range of the first base station by using the first coverage distance and the fifth coverage distance.

[0036] At least one embodiment of the present application provides a determination device for a coverage range of a base station, comprising:

[0037] an obtaining unit, configured to obtain a vertex position of a first base station, a flight height of an unmanned aerial vehicle, and a first position and a second position of an antenna main lobe of the first base station; the first position represents a position where the gain of the antenna main lobe rises by 3dB; the second position represents a position where the gain of the antenna main lobe falls by 3dB.

[0038] The first processing unit is configured to determine a first coverage distance of the antenna main beam based on the first position, the vertex position of the first base station and the flight height of the UAV, and determine a second coverage distance of the antenna main beam based on the second position, the vertex position of the first base station and the flight height of the UAV.

[0039] The second processing unit is configured to determine the coverage range of the first base station by using the first coverage distance and the second coverage distance, and the UAV can stably fly in the coverage range of the first base station.

[0040] At least one embodiment of the present application provides a network device, comprising:

[0041] The communication interface is configured to acquire the vertex position of the first base station, the flight height of the UAV, and the first position and the second position of the antenna main beam of the first base station; the first position represents the position at which the gain of the antenna main beam rises by 3dB; and the second position represents the position at which the gain of the antenna main beam falls by 3dB.

[0042] The processor is configured to determine a first coverage distance of the antenna main beam based on the first position, the vertex position of the first base station and the flight height of the UAV, and determine a second coverage distance of the antenna main beam based on the second position, the vertex position of the first base station and the flight height of the UAV; and the processor is further configured to determine the coverage range of the first base station by using the first coverage distance and the second coverage distance, and the UAV can stably fly in the coverage range of the first base station.

[0043] At least one embodiment of the present application provides a network device, comprising a processor and a memory for storing a computer program capable of running on the processor,

[0044] When the processor is used to run the computer program, the steps of any method of the network device described above are performed.

[0045] At least one embodiment of the present application provides a storage medium having a computer program stored thereon, and the computer program is executed by a processor to implement the steps of any method described above.

[0046] The base station coverage range determination method, device, equipment and storage medium provided by the embodiment of the present application, the vertex position of the first base station, the flight height of the unmanned aerial vehicle and the first position and the second position of the antenna main beam of the first base station are acquired; the first position represents the position of the gain rising 3dB of the antenna main beam; the second position represents the position of the gain falling 3dB of the antenna main beam; the first coverage distance of the antenna main beam is determined based on the first position, the vertex position of the first base station and the flight height of the unmanned aerial vehicle; and the second coverage distance of the antenna main beam is determined based on the second position, the vertex position of the first base station and the flight height of the unmanned aerial vehicle; the coverage range of the first base station is determined by using the first coverage distance and the second coverage distance; and the unmanned aerial vehicle can stably fly in the coverage range of the first base station. By using the technical scheme provided by the embodiment of the present application, the first base station coverage range is determined by joint operation of multiple parameters such as the vertex position of the first base station, the flight height of the unmanned aerial vehicle and the first position and the second position of the antenna main beam of the first base station, so that the low-altitude network planning is realized, and the unmanned aerial vehicle can stably fly in the coverage range of the first base station. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 is a schematic diagram of the fragmentation coverage of the low-altitude network in the related art;

[0048] Figure 2a is a schematic diagram of the low-altitude coverage realized by the upward beam in the related art;

[0049] Figure 2b is a schematic diagram of the coverage hole at the top of the base station in the related art;

[0050] Figure 3 is a schematic diagram of the implementation process of the base station coverage range determination method in the embodiment of the present application;

[0051] Figure 4 is a schematic diagram of the determination of the first coverage distance of the antenna main beam of the first base station in the embodiment of the present application;

[0052] Figure 5 is a schematic diagram of the determination of the second coverage distance of the antenna main beam of the first base station in the embodiment of the present application;

[0053] Figure 6 is a schematic diagram of the specific implementation process of the base station coverage range determination method in the embodiment of the present application;

[0054] Figure 7 is a schematic diagram of the determination of the interval between the second base station and the first base station;

[0055] Figure 8This is a schematic diagram of the composition structure of the base station coverage determination device according to an embodiment of the present invention;

[0056] Figure 9 This is a schematic diagram of the composition structure of a network device according to an embodiment of the present invention. Detailed Implementation

[0057] Before introducing the technical solutions of the embodiments of the present invention, the relevant technologies will be explained first.

[0058] In related technologies, drone operations have been gradually applied in logistics, surveying, inspection, live streaming and other fields. Their information transmission needs have evolved from unified return after the flight to real-time content return, making the demand for high-quality mobile networks increasingly urgent.

[0059] To meet the operational needs of drones, low-altitude network coverage relies on ground base stations. The ground network primarily ensures ground signal coverage, with its antenna main lobe pointing towards the ground, and only the upper sidelobes providing low-altitude coverage. Ground base stations are designed with spacing based on building obstructions to form a cellular network, generally ensuring each base station covers its surrounding cells, and these interconnected base stations create a continuous coverage area. However, the airspace lacks building obstructions, resulting in long upper sidelobe beam propagation and inconsistent upper sidelobe energy across antennas. This leads to fragmented low-altitude network coverage, causing drones to receive signals from multiple cells during flight, resulting in severe interference. Figure 1 As shown.

[0060] In other words, in related technologies, the fragmentation of the upper sidelobe low-altitude coverage network leads to frequent switching when drones use communication networks, resulting in unstable network speeds and even coverage gaps.

[0061] Among the related technologies, three schemes for constructing a low-altitude network are proposed. These include:

[0062] The first option is to build new low-altitude coverage stations using different frequencies, that is, to use two base stations with different frequency bands for ground coverage and low-altitude coverage. However, this method greatly increases the cost of network construction, and spectrum is a very valuable resource. When a frequency band is used for low-altitude coverage, it cannot be used for other purposes in that area, resulting in very low spectrum utilization efficiency.

[0063] The second approach involves merging co-frequency cells to construct low-altitude coverage stations. This involves placing two base stations at the same location. To avoid interference during cell merging, one base station serves the ground, with its main lobe pointing downwards and upper sidelobes suppressed. The other base station's main lobe points towards the low altitude, serving the low-altitude network exclusively. However, this approach is also extremely expensive, significantly increasing network construction costs for operators.

[0064] The third approach: Utilize the base station's beam scanning function, directing one of the beams towards low altitude to achieve low-altitude coverage. For example... Figure 2a As shown, at a certain moment, the main lobe of the beam is focused towards the low-altitude network, while at other moments the beam angle points towards the ground, serving the terrestrial network. However, this scheme does not disclose how the coverage area of ​​the base station is determined. Furthermore, there is a significant discrepancy between low-altitude network planning and ground station coverage, mainly in two aspects. First, because there are almost no obstructions at low altitudes, electromagnetic waves propagate in low altitudes similar to free space, with a propagation distance far exceeding that on the ground. However, as the distance increases, the reference signal receiving power (RSRP) decreases. To ensure UAV signal quality, a balance must be struck between RSRP and signal coverage. Second, when using an upward beam for low-altitude coverage, the antenna has a preset downward tilt angle. The upward beam angle is the maximum mechanical upward tilt angle minus the preset downward tilt angle. Therefore, a lower upward beam angle means the beam cannot cover the area above the base station, creating a coverage gap at the top of the base station. Figure 2b As shown.

[0065] Based on this, in this embodiment of the invention, the vertex position of the first base station, the flight altitude of the UAV, and the first and second positions of the main beam of the antenna of the first base station are obtained; the first position represents the position where the gain of the main beam of the antenna increases by 3dB; the second position represents the position where the gain of the main beam of the antenna decreases by 3dB; based on the first position, the vertex position of the first base station, and the flight altitude of the UAV, a first coverage distance of the main beam of the antenna is determined; and based on the second position, the vertex position of the first base station, and the flight altitude of the UAV, a second coverage distance of the main beam of the antenna is determined; using the first coverage distance and the second coverage distance, the coverage area of ​​the first base station is determined; the UAV can fly stably within the coverage area of ​​the first base station.

[0066] Figure 3 This is a schematic diagram illustrating the implementation flow of a method for determining the coverage area of ​​a base station according to an embodiment of the present invention, applied to a first base station, such as... Figure 3 As shown, the method includes steps 301 to 303:

[0067] Step 301: Obtain the vertex position of the first base station, the flight altitude of the UAV, and the first and second positions of the main beam of the antenna of the first base station.

[0068] It is understood that the first position represents the position where the gain of the main beam of the antenna increases by 3dB. The second position represents the position where the gain of the main beam of the antenna decreases by 3dB.

[0069] It can be understood that the network in which the first base station and the UAV are located can be a low-altitude network.

[0070] It can be understood that concentrating the direction of the antenna main beam of the first base station to the low-altitude can realize the low-altitude network coverage, so that the UAV can acquire signals and camp during flight.

[0071] In order to realize the low-altitude network coverage, the near-point coverage and the far-point coverage of the first base station can be planned.

[0072] Further, the near-point coverage of the first base station can be planned by using the vertex position of the first base station, the flight height of the UAV and the first position of the antenna main beam of the first base station.

[0073] In addition, the far-point coverage of the first base station can be planned by using the vertex position of the first base station, the flight height of the UAV and the second position of the antenna main beam of the first base station.

[0074] It can be understood that the first base station can acquire the vertex position of the first base station and the flight height of the UAV from the local.

[0075] It can be understood that the first base station can calculate the first position (i.e. the upper 3dB position) and the second position (i.e. the lower 3dB position) of the antenna main beam of the first base station according to the following formula.

[0076] α = electronic up tilt angle - mechanical down tilt angle (1)

[0077] Upper 3dB position = H1 x (α + beam width / 2) = H1 x α1 (2)

[0078] Lower 3dB position = H1 x (α - beam width / 2) = H1 x α2 (3)

[0079] Wherein, H1 refers to the vertex position of the first base station. The beam width refers to the beam horizontal plane half-power beam width, which is a factory parameter of the antenna. α1 refers to the included angle between the line connecting the upper 3dB position and the vertex of the first base station and the horizontal line. α2 refers to the included angle between the line connecting the lower 3dB position and the vertex of the first base station and the horizontal line.

[0080] Step 302: determining the first coverage distance of the antenna main beam based on the first position, the vertex position of the first base station and the flight height of the UAV, and determining the second coverage distance of the antenna main beam based on the second position, the vertex position of the first base station and the flight height of the UAV.

[0081] It can be understood that the first coverage distance of the antenna main beam, which can also be referred to as a near point distance, is used to determine the near point coverage of the first base station.

[0082] Since the position of the upper 3dB point of the antenna main beam of the first base station, at which the gain rises by 3dB, is the first to cover the flight height of the unmanned aerial vehicle, the first coverage distance of the antenna main beam can be determined according to the first position, the vertex position of the first base station, and the flight height of the unmanned aerial vehicle.

[0083] Based on this, in an embodiment, the determination of the first coverage distance of the antenna main beam comprises:

[0084] determining a first angle using the first position and the vertex position; the first angle represents an included angle between a line connecting the first position and the vertex position and a horizontal direction;

[0085] determining a height difference between the flight height of the unmanned aerial vehicle and the vertex position;

[0086] determining a first distance using the first angle and the height difference; the first distance represents a distance of the line connecting the first position and the vertex position;

[0087] determining the first coverage distance of the antenna main beam based on the first distance.

[0088] In an embodiment, the determination of the first coverage distance of the antenna main beam based on the first distance comprises:

[0089] determining a horizontal distance from the unmanned aerial vehicle vertical projection to the first base station;

[0090] determining the first coverage distance of the antenna main beam using the first distance and the horizontal distance.

[0091] Figure 4 is a schematic diagram of determining the first coverage distance of the antenna main beam of the first base station, as Figure 4 shown, the process of determining the first coverage distance can comprise:

[0092] First, a two-dimensional coordinate system is established, and the origin of the coordinate system is the center position of the first base station.

[0093] Then, in the established two-dimensional coordinate system, the vertex position of the first base station, the flight height of the unmanned aerial vehicle, and the first position of the antenna beam of the first base station are determined.

[0094] Finally, a first angle is determined by using the first position and the vertex position; a height difference between the flight height of the UAV and the vertex position of the first base station is determined; a first distance is determined by using the first angle and the height difference; and a first coverage distance of an antenna main lobe of the first base station is determined based on the first distance.

[0095] Specifically, the first coverage distance of the antenna main lobe of the first base station can be calculated in combination with formula (4) and formula (5).

[0096]

[0097] wherein D1' represents the first distance. H1 represents the flight height of the UAV. H2 represents the vertex position of the first base station. H1-H2 represents the height difference. represents the first angle, i.e., the included angle between the line connecting the upper 3dB position and the vertex of the first base station and the horizontal line.

[0098]

[0099] wherein D1 represents the first coverage distance of the antenna main lobe of the first base station. D2 represents the horizontal distance between the first base station and the vertical projection of the UAV. The straight line corresponding to the first distance, the straight line corresponding to the horizontal distance and the straight line corresponding to the first coverage distance satisfy the Pythagorean theorem.

[0100] It can be understood that the second coverage distance of the antenna main lobe, which can also be referred to as the far point distance, is used to determine the far point coverage of the first base station.

[0101] The second coverage distance of the antenna main lobe can be determined by the position of the lower 3dB point of the first base station, i.e., the position where the gain of the antenna main lobe decreases by 3dB, and the vertex position of the first base station and the flight height of the UAV.

[0102] Based on this, in an embodiment, the determination of the second coverage distance of the antenna main lobe comprises:

[0103] A second angle is determined by using the second position of the antenna main lobe and the vertex position of the first base station; the second angle represents the included angle between the line connecting the second position and the vertex position and the horizontal direction.

[0104] A height difference between the flight height of the UAV and the vertex position of the first base station is determined.

[0105] A second distance is determined by using the second angle and the height difference; the second distance represents the distance of the line connecting the second position and the vertex position.

[0106] determine a second coverage distance of the main antenna beam of the first base station based on the second distance.

[0107] In an embodiment, the determining the second coverage distance of the main antenna beam of the first base station based on the second distance comprises:

[0108] determining a horizontal distance between the first base station and the vertical projection of the UAV;

[0109] determining the second coverage distance of the main antenna beam of the first base station based on the second distance and the horizontal distance.

[0110] Figure 5 is a schematic diagram of determining the second coverage distance of the main antenna beam of the first base station, as Figure 5 determining the second coverage distance can include:

[0111] First, a two-dimensional coordinate system is established, and the origin of the coordinate system is the center position of the first base station.

[0112] Then, in the established two-dimensional coordinate system, the vertex position of the first base station, the flight height of the UAV, and the first position of the antenna beam of the first base station are determined.

[0113] Finally, the second angle is determined by using the first position and the vertex position; the height difference between the flight height of the UAV and the vertex position is determined; the second distance is determined by using the second angle and the height difference; and the second coverage distance of the main antenna beam is determined based on the second distance.

[0114] Specifically, the second coverage distance of the main antenna beam of the first base station can be calculated in combination with formula (6) and formula (7).

[0115]

[0116] wherein D3' represents the second distance. H1 represents the flight height of the UAV. H2 represents the vertex position of the first base station. H1-H2 represents the height difference. represents the second angle, that is, the included angle between the line connecting the lower 3dB position and the vertex of the first base station and the horizontal line.

[0117]

[0118] wherein D3 represents the second coverage distance of the main antenna beam of the first base station. D2 represents the distance equal to the horizontal distance between the first base station and the vertical projection of the UAV. The straight line corresponding to the second distance, the straight line corresponding to the horizontal distance, and the straight line corresponding to the second coverage distance satisfy the Pythagorean theorem.

[0119] Step 303: determining the coverage range of the first base station by using the first coverage distance and the second coverage distance; the UAV can stably fly within the coverage range of the first base station.

[0120] It can be understood that a circular coverage area is determined by using the first coverage distance, and the determined circular coverage area is taken as the near-point coverage range of the first base station.

[0121] It should be noted that since the first coverage distance is determined according to the upper 3dB position of the main beam of the antenna of the first base station, the energy within the near-point coverage range of the first base station is relatively concentrated, so that the UAV can stably fly within the near-point coverage range of the first base station, thereby avoiding the problem of frequent switching of the UAV due to the non-concentration of energy within the coverage range of the base station in the related art.

[0122] It can be understood that a circular coverage area is determined by using the second coverage distance, and the determined circular coverage area is taken as the far-point coverage range of the first base station.

[0123] It should be noted that since the second coverage distance is determined according to the lower 3dB position of the main beam of the antenna of the first base station, the energy within the far-point coverage range of the first base station is relatively concentrated, so that the UAV can stably fly within the far-point coverage range of the first base station, thereby avoiding the problem of frequent switching of the UAV due to the non-concentration of energy within the coverage range of the base station in the related art.

[0124] In actual application, since the beam propagates without obstruction in low altitude, it is equivalent to propagation in free space, and the loss is very low, and the propagation distance is very long. Therefore, if the UAV has a relatively high requirement on signal quality, the UAV is expected to be always in a coverage area with good signal, for example, the RSRP in the coverage area of the first base station is required to be <-70dB. In this way, the far-point coverage of the first base station is limited by the RSRP value. Therefore, the far-point coverage of the first base station can be determined according to the minimum signal strength required by the UAV for the coverage of the first base station.

[0125] Based on this, in an embodiment, the method further comprises:

[0126] obtaining the minimum signal strength required by the UAV for the coverage of the first base station;

[0127] determining a fifth coverage distance of the main beam of the antenna by using the minimum signal strength;

[0128] when the fifth coverage distance is less than the second coverage distance, redetermining the coverage range of the first base station by using the first coverage distance and the fifth coverage distance.

[0129] Specifically, the fifth coverage distance of the antenna main beam of the first base station can be calculated in combination with formula (8) and formula (9).

[0130]

[0131] wherein P1 represents the transmission power. P2 represents the antenna gain. RSRP represents the minimum signal strength required by the unmanned aerial vehicle to the coverage of the first base station. f represents the antenna gain.

[0132]

[0133] wherein D4 represents the fifth coverage distance of the antenna main beam of the first base station. D2 represents the distance equal to the horizontal distance from the first base station to the vertical projection of the unmanned aerial vehicle.

[0134] It can be understood that when the fifth coverage distance is less than the second coverage distance, a circular coverage area is determined by using the first coverage distance, and the determined circular coverage area is taken as the near-point coverage range of the first base station. A circular coverage area is determined by using the fifth coverage distance, and the determined circular coverage area is taken as the far-point coverage range of the first base station.

[0135] In the embodiment of the application, the coverage range of the first base station is determined by using the vertex position of the first base station, the flight height of the unmanned aerial vehicle, and the first position and the second position of the antenna main beam of the first base station, which has the following advantages:

[0136] (1) A low-altitude network planning scheme is provided. Specifically, the coverage range of the first base station is determined by multi-parameter joint operation, so as to realize low-altitude network planning and ensure stable flight of the unmanned aerial vehicle within the coverage range of the first base station.

[0137] (2) Compared with the method of realizing low-altitude network coverage by adding a new inter-frequency station or a new intra-frequency station or using the upward beam of the base station in the related art, the high-quality low-altitude coverage network is created without increasing the network construction cost in the embodiment of the application.

[0138] Figure 6 is a specific implementation flowchart of the base station coverage range determination method of the embodiment of the application, as shown in Figure 6 the method comprises steps 601 to 607:

[0139] Step 601: obtaining the vertex position of the first base station, the flight height of the unmanned aerial vehicle, and the first position and the second position of the antenna main beam of the first base station.

[0140] It can be understood that the first position represents a position where the gain of the antenna main beam rises by 3dB; and the second position represents a position where the gain of the antenna main beam falls by 3dB.

[0141] Step 602: obtaining the vertex position of the second base station, the flight height of the unmanned aerial vehicle, and the third position and the fourth position of the antenna main beam of the second base station.

[0142] It can be understood that the third position represents a position where the gain of the antenna main beam rises by 3dB; and the fourth position represents a position where the gain of the antenna main beam falls by 3dB.

[0143] Step 603: determining the first coverage distance of the antenna main beam of the first base station based on the first position, the vertex position of the first base station, and the flight height of the unmanned aerial vehicle.

[0144] Step 604: determining the second coverage distance of the antenna main beam based on the second position, the vertex position of the first base station, and the flight height of the unmanned aerial vehicle.

[0145] Step 605: determining the third coverage distance of the antenna main beam of the second base station based on the third position, the vertex position of the second base station, and the flight height of the unmanned aerial vehicle.

[0146] It can be understood that the manner of determining the third coverage distance of the antenna main beam of the second base station is similar to the manner of determining the first coverage distance of the antenna main beam of the first base station, which will not be described here.

[0147] Step 606: determining the fourth coverage distance of the antenna main beam of the second base station based on the fourth position, the vertex position of the second base station, and the flight height of the unmanned aerial vehicle.

[0148] It can be understood that the manner of determining the fourth coverage distance of the antenna main beam of the second base station is similar to the manner of determining the second coverage distance of the antenna main beam of the first base station, which will not be described here.

[0149] Step 607: determining the interval between the second base station and the first base station by using the third coverage distance and the fourth coverage distance, and the first coverage distance and the second coverage distance.

[0150] In actual application, when the unmanned aerial vehicle flies in a straight line, low-altitude coverage is required along the line of base stations, and since the low-altitude loss is low and the beam propagation distance is long, low-altitude coverage is not required for each base station.

[0151] That is, in the ground network planning, the base station needs to cover the surrounding area. In the low-altitude network planning, the base station needs to cover the remote area, and if the top of the base station needs to be covered by the signal, the beam of other base stations needs to be used for cross-site coverage, so as to make up for the coverage hole at the top of the base station.

[0152] Based on this, in an embodiment, the interval between the second base station and the first base station is determined by using the third coverage distance and the fourth coverage distance, and the first coverage distance and the second coverage distance, which includes:

[0153] The third coverage distance is subtracted from the first coverage distance to obtain a difference value, and the interval between the second base station and the first base station is determined by using the obtained difference value.

[0154] Alternatively,

[0155] The second coverage distance is subtracted from the fourth coverage distance to obtain a difference value, and the interval between the second base station and the first base station is determined by using the obtained difference value.

[0156] It can be understood that, according to the low-altitude network planning according to the interval between the second base station and the first base station, cross-site coverage can be realized.

[0157] Figure 7 is a schematic diagram of determining the interval between the second base station and the first base station, as Figure 7 shown, assuming that the first base station is represented by station 1, and the second base station is represented by station 2, and the point D can represent the far point coverage point of station 1 or the near point coverage point of station 2, that is, the far point coverage point of station 1 should coincide with the near point coverage point of station 2.

[0158] The interval between station 1 and station 2 can be represented by formula (7), which is as follows:

[0159]

[0160] Wherein, S represents the interval between station 1 and station 2. d1 represents the far point coverage distance of station 1 determined by the far point coverage point D of station 1. d2 represents the near point coverage distance of station 2 determined by the near point coverage point D of station 2.

[0161] In the embodiment of the application, the interval between the second base station and the first base station is determined, which has the following advantages:

[0162] (1) By determining the interval between the second base station and the first base station, cross-site networking can be realized.

[0163] (2) Through cross-site networking, the problem of base station top coverage hole can be solved. The base station top coverage hole is caused by the low upward beam lifting angle, and the radiation beam cannot cover the top area of the base station.

[0164] To realize the method for determining the coverage range of the base station, an embodiment of the present application further provides a device for determining the coverage range of the base station, Figure 8 The schematic diagram of the composition structure of the device for determining the coverage range of the base station is shown in Figure 8 The device comprises:

[0165] The acquisition unit 81 is configured to acquire the vertex position of the first base station, the flight height of the unmanned aerial vehicle, and the first position and the second position of the main antenna beam of the first base station; the first position represents the position at which the gain of the main antenna beam rises by 3dB; and the second position represents the position at which the gain of the main antenna beam drops by 3dB.

[0166] The first processing unit 82 is configured to determine the first coverage distance of the main antenna beam based on the first position, the vertex position of the first base station, and the flight height of the unmanned aerial vehicle; and determine the second coverage distance of the main antenna beam based on the second position, the vertex position of the first base station, and the flight height of the unmanned aerial vehicle.

[0167] The second processing unit 83 is configured to determine the coverage range of the first base station by using the first coverage distance and the second coverage distance; and the unmanned aerial vehicle can stably fly within the coverage range of the first base station.

[0168] In an embodiment, the first processing unit 82 is specifically configured to:

[0169] Determine a first angle by using the first position and the vertex position; the first angle represents the included angle between the line connecting the first position and the vertex position and the horizontal direction;

[0170] Determine the height difference between the flight height of the unmanned aerial vehicle and the vertex position;

[0171] Determine a first distance by using the first angle and the height difference; the first distance represents the distance of the line connecting the first position and the vertex position;

[0172] Determine the first coverage distance of the main antenna beam based on the first distance.

[0173] In an embodiment, the first processing unit 82 is specifically configured to:

[0174] Determine the horizontal distance between the first base station and the vertical projection of the unmanned aerial vehicle;

[0175] determine a first coverage distance of the antenna main beam by using the first distance and the horizontal distance.

[0176] In an embodiment, the first processing unit 82 is specifically configured to:

[0177] determine a second angle by using the second position of the antenna main beam and the vertex position of the first base station; the second angle represents an included angle between a line connecting the second position and the vertex position and a horizontal direction;

[0178] determine a height difference between the flight height of the UAV and the vertex position of the first base station;

[0179] determine a second distance by using the second angle and the height difference; the second distance represents a distance of the line connecting the second position and the vertex position;

[0180] determine a second coverage distance of the antenna main beam based on the second distance.

[0181] In an embodiment, the first processing unit 82 is specifically configured to:

[0182] determine a horizontal distance between the first base station and the vertical projection of the UAV;

[0183] determine a second coverage distance of the antenna main beam by using the second distance and the horizontal distance.

[0184] In an embodiment, the second processing unit 83 is further configured to:

[0185] determine a third coverage distance and a fourth coverage distance of an antenna main beam of a second base station; the third coverage distance is determined by using a vertex position of the second base station, a flight height of the UAV and a third position of the antenna main beam of the second base station; the fourth coverage distance is determined by using the vertex position of the second base station, the flight height of the UAV and a fourth position of the antenna main beam of the second base station; the third position represents a position where the gain of the antenna main beam rises by 3dB; the fourth position represents a position where the gain of the antenna main beam falls by 3dB;

[0186] determine a distance between the second base station and the first base station by using the third coverage distance and the fourth coverage distance, and the first coverage distance and the second coverage distance.

[0187] In an embodiment, the second processing unit 83 is specifically configured to:

[0188] determining the interval between the second base station and the first base station by using the difference value;

[0189] or,

[0190] determining the interval between the second base station and the first base station by using the difference value.

[0191] In an embodiment, the second processing unit 83 is further configured to:

[0192] acquire the minimum signal strength required by the UAV for the coverage of the first base station;

[0193] determine a fifth coverage distance of the main beam of the antenna by using the minimum signal strength;

[0194] when the fifth coverage distance is less than the second coverage distance, re-determine the coverage range of the first base station by using the first coverage distance and the fifth coverage distance.

[0195] In actual application, the acquisition unit 81 can be implemented by a communication interface in the base station coverage range determination apparatus. The first processing unit 82 and the second processing unit 83 can be implemented by a processor in the base station coverage range determination apparatus.

[0196] It should be noted that the base station coverage range determination apparatus provided in the above embodiments is only used as an example for the division of the above program modules in the information processing, and in actual application, the above processing can be completed by different program modules according to the needs, that is, the internal structure of the apparatus is divided into different program modules to complete all or part of the above processing. In addition, the base station coverage range determination apparatus and the information processing method provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0197] The embodiment of the present application also provides a network device, as shown in the following figure, which comprises: Figure 9

[0198] a communication interface 91 capable of information interaction with other devices;

[0199] a processor 92 connected with the communication interface 91, configured to execute the above-mentioned method provided by one or more technical solutions on the router side when running a computer program. The computer program is stored on a memory 93.

[0200] It should be noted that the specific processing process of the processor 92 and the communication interface 91 is detailed in the method embodiments, which will not be repeated here.​

[0201] Of course, in practice, the various components of network device 90 are coupled together by a bus system 94. It is understood that the bus system 94 is used for the communication of data between the components. The bus system 94 includes a data bus, a power bus, a control bus, and a state signal bus, although for the sake of clarity, only the data bus is shown in Figure 9 FIG. 1.

[0202] Memory 93 in the embodiments of the present application is used to store various types of data to support the operation of network device 90. Examples of such data include any computer programs for operation on network device 90.

[0203] The method disclosed in the embodiments of the present application can be applied to or implemented by the processor 92. The processor 92 can be an integrated circuit chip having a processing capability of signals. In the implementation process, each step of the above method can be completed by the integrated logic circuit or the instruction of software form in the processor 92. The processor 92 disclosed above can be a general processor, a digital signal processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The processor 92 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiments of the present application, the hardware decoding processor can be directly embodied to execute the above method, or the combination of hardware and software modules in the decoding processor can be executed. The software module can be located in a storage medium, which is located in the memory 93, and the processor 92 reads the information in the memory 93 and combines the hardware to complete the steps of the above method.

[0204] In the exemplary embodiments, the network device 90 can be implemented by one or more application specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field programmable gate arrays (FPGAs), general-purpose processors, controllers, micro controllers (MCUs), microprocessors (Microprocessors), or other electronic elements, for executing the above method.

[0205] It can be understood that the memory (the memory 93) of the embodiments of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. The non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a ferromagnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM). The magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example but not limitation, many forms of RAM can be used, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), sync link dynamic random access memory (SLDRAM), and direct rambus random access memory (DRRAM).The memory described in the embodiments of the present application is intended to include, but not limited to, these and any other suitable types of memory.

[0206] In the example embodiments, the embodiments of the present application also provide a storage medium, specifically a computer readable storage medium, such as the memory 91 storing the computer program executable by the processor 92 of the network device 90 to complete the steps of the aforementioned network device side method. The computer readable storage medium can be FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.

[0207] It should be noted that "and", "or", etc. are used to distinguish similar objects, and do not necessarily mean a specific order or sequence.

[0208] In addition, the technical solutions described in the embodiments of the present application can be arbitrarily combined without conflict.

[0209] The above is only a preferred embodiment of the present application, and is not intended to limit the protection scope of the present application.

Claims

1. A method for determining the coverage area of ​​a base station, characterized in that, The method includes: The vertex position of the first base station, the flight altitude of the UAV, and the first and second positions of the main beam of the antenna of the first base station are obtained; the first position represents the position where the gain of the main beam of the antenna increases by 3dB; the second position represents the position where the gain of the main beam of the antenna decreases by 3dB. Based on the first location, the vertex location of the first base station, and the flight altitude of the UAV, a first coverage distance of the main antenna beam is determined; and based on the second location, the vertex location of the first base station, and the flight altitude of the UAV, a second coverage distance of the main antenna beam is determined. The coverage area of ​​the first base station is determined using the first coverage distance and the second coverage distance; the drone is able to fly stably within the coverage area of ​​the first base station; Obtain the minimum signal strength required for the drone to cover the first base station; Using the minimum signal strength, the fifth coverage distance of the antenna main beam is determined; When the fifth coverage distance is less than the second coverage distance, the coverage range of the first base station is re-determined using the first coverage distance and the fifth coverage distance.

2. The method according to claim 1, characterized in that, Determining the first coverage distance of the antenna main beam based on the first location, the vertex position of the first base station, and the flight altitude of the UAV includes: A first angle is determined using the first position and the vertex position; the first angle represents the angle between the line connecting the first position and the vertex position and the horizontal direction. Determine the height difference between the drone's flight altitude and the vertex position; Using the first angle and the height difference, a first distance is determined; the first distance represents the distance of the line connecting the first position and the vertex position. Based on the first distance, the first coverage distance of the antenna main beam is determined.

3. The method according to claim 2, characterized in that, Determining the first coverage distance of the antenna main beam based on the first distance includes: Determine the horizontal distance between the first base station and the vertical projection of the UAV; Using the first distance and the horizontal distance, the first coverage distance of the antenna main beam is determined.

4. The method according to claim 1, characterized in that, Determining the second coverage distance of the antenna main beam based on the second location, the vertex location of the first base station, and the flight altitude of the UAV includes: The second angle is determined by using the second position of the main beam of the antenna and the vertex position of the first base station; the second angle represents the angle between the line connecting the second position and the vertex position and the horizontal direction. Determine the height difference between the flight altitude of the drone and the vertex position of the first base station; Using the second angle and the height difference, a second distance is determined; the second distance represents the distance of the line connecting the second position and the vertex position. Based on the second distance, the second coverage distance of the antenna main beam is determined.

5. The method according to claim 4, characterized in that, Determining the second coverage distance of the antenna main beam based on the second distance includes: Determine the horizontal distance between the first base station and the vertical projection of the UAV; Using the second distance and the horizontal distance, the second coverage distance of the antenna main beam is determined.

6. The method according to claim 1, characterized in that, The method further includes: The third and fourth coverage distances of the main antenna beam of the second base station are determined. The third coverage distance is determined using the apex position of the second base station, the flight altitude of the UAV, and the third position of the main antenna beam of the second base station. The fourth coverage distance is determined using the apex position of the second base station, the flight altitude of the UAV, and the fourth position of the main antenna beam of the second base station. The third position represents the position where the gain of the main antenna beam increases by 3dB. The fourth position represents the position where the gain of the main antenna beam decreases by 3dB. The interval between the second base station and the first base station is determined using the third and fourth coverage distances, as well as the first and second coverage distances.

7. The method according to claim 6, characterized in that, Determining the interval between the second base station and the first base station using the third coverage distance, the fourth coverage distance, the first coverage distance, and the second coverage distance includes: The difference between the third coverage distance and the first coverage distance is obtained; the difference is then used to determine the interval between the second base station and the first base station. or, The difference between the second coverage distance and the fourth coverage distance is calculated to obtain the difference value; the interval between the second base station and the first base station is determined using the obtained difference value.

8. A device for determining the coverage area of ​​a base station, characterized in that, include: The acquisition unit is used to acquire the vertex position of the first base station, the flight altitude of the UAV, and the first and second positions of the main beam of the antenna of the first base station. The first position represents the position where the gain of the main beam of the antenna increases by 3dB; The second position represents the location where the gain of the main beam of the antenna drops by 3dB; The first processing unit is configured to determine the first coverage distance of the main beam of the antenna based on the first location, the vertex position of the first base station, and the flight altitude of the UAV. Based on the second location, the vertex location of the first base station, and the flight altitude of the UAV, the second coverage distance of the antenna main beam is determined; The second processing unit is configured to determine the coverage area of ​​the first base station using the first coverage distance and the second coverage distance; the drone is capable of stable flight within the coverage area of ​​the first base station; and obtain the minimum signal strength required by the drone to cover the first base station; determine the fifth coverage distance of the antenna main beam using the minimum signal strength; and when the fifth coverage distance is less than the second coverage distance, redetermine the coverage area of ​​the first base station using the first coverage distance and the fifth coverage distance.

9. A network device, characterized in that, include: The communication interface is used to obtain the vertex position of the first base station, the flight altitude of the UAV, and the first and second positions of the main beam of the antenna of the first base station. The first position represents the position where the gain of the main beam of the antenna increases by 3dB; The second position represents the location where the gain of the main beam of the antenna drops by 3dB; The processor is configured to: determine a first coverage distance of the main antenna beam based on the first location, the vertex location of the first base station, and the flight altitude of the UAV; and determine a second coverage distance of the main antenna beam based on the second location, the vertex location of the first base station, and the flight altitude of the UAV; further configured to: determine the coverage area of ​​the first base station using the first coverage distance and the second coverage distance; wherein the UAV is capable of stable flight within the coverage area of ​​the first base station; and acquire the minimum signal strength required by the UAV to cover the first base station; determine a fifth coverage distance of the main antenna beam using the minimum signal strength; and, when the fifth coverage distance is less than the second coverage distance, redetermine the coverage area of ​​the first base station using the first coverage distance and the fifth coverage distance.

10. A network device, characterized in that, This includes a processor and memory for storing computer programs that can run on the processor. When the processor is used to run the computer program, it performs the steps of the method according to any one of claims 1 to 7.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

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