Method and device for suppressing atmospheric duct interference

Abstract

The present application discloses a method and device for suppressing atmospheric waveguide interference. The method includes: obtaining the channel parameters of the wireless communication network where the disturbed base station is located, and the wireless communication network includes multiple base stations; determining the first atmospheric waveguide ray trajectory based on the channel parameters, and determining the first single-hop distance interval of the disturbed base station based on the first atmospheric waveguide ray trajectory; determining the propagation delay interval from the disturbed base station to any interfering base station in the wireless communication network based on the first single-hop distance interval and the preset speed of light value, and determining the average propagation delay of the disturbed base station based on the propagation delay interval; determining the target timing gap ratio result corresponding to the average propagation delay based on the matching result of the average propagation delay and the preset timing gap ratio table, and suppressing the atmospheric waveguide interference based on the target timing gap ratio result. The present application solves the technical problem that the related technology cannot predict the atmospheric waveguide interference when the precise propagation delay is unknown.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for suppressing atmospheric waveguide interference. Background Art

[0002] Under certain meteorological conditions, electromagnetic waves traveling through the atmosphere are affected by atmospheric refraction, causing their propagation paths to bend toward the ground. When the curvature of the electromagnetic wave propagation path exceeds the curvature of the Earth's surface, some of the electromagnetic waves become trapped in the thin layer of atmosphere. This phenomenon is known as atmospheric ducting. In wireless communication systems, atmospheric ducting often causes co-channel interference between remote base stations. This primarily manifests as a time slot misalignment caused by propagation delay when the signal from the near-end interfering base station reaches the far-end victim base station. The downlink wireless signal from the near-end interfering base station interferes with the uplink wireless signal of the far-end victim base station, resulting in atmospheric ducting interference.

[0003] Currently, when predicting atmospheric waveguide interference, related technologies usually reduce the transmission density of the target base station's cell reference signal (CRS) and modify the downlink OFDM symbols to avoid time slot misalignment due to propagation delay, provided that the signal propagation delay is known. As for obtaining the propagation delay, related technologies use multiple shipborne AIS (Automatic Identification System) devices to obtain the signal transmission and reception delay. However, this method only tests the results between points and does not have the early warning and universal applicability required for large-scale network applications.

[0004] To address the above-mentioned problems, no effective solutions have been proposed so far. Summary of the Invention

[0005] The embodiments of the present application provide a method and apparatus for suppressing atmospheric waveguide interference, so as to at least solve the technical problem in related technologies that atmospheric waveguide interference cannot be predicted when the precise propagation delay is unknown.

[0006] According to one aspect of an embodiment of the present application, a method for suppressing atmospheric waveguide interference is provided, including: obtaining channel parameters of a wireless communication network in which a disturbed base station is located, wherein the wireless communication network includes multiple base stations, and the channel parameters include: environmental parameters and communication parameters; determining a first atmospheric waveguide ray trajectory based on the channel parameters, and determining a first single-hop distance interval of the disturbed base station based on the first atmospheric waveguide ray trajectory; determining a propagation delay interval from the disturbed base station to any interfering base station in the wireless communication network based on the first single-hop distance interval and a preset speed of light value, and determining an average propagation delay of the disturbed base station based on the propagation delay interval; determining a target timing gap ratio result corresponding to the average propagation delay based on a matching result between the average propagation delay and a preset timing gap ratio table, and suppressing the atmospheric waveguide interference based on the target timing gap ratio result.

[0007] Optionally, obtaining the channel parameters of the wireless communication network where the disturbed base station is located includes: obtaining the environmental parameters of the disturbed base station, wherein the environmental parameters include at least one of the following: earth radius, broken line factor, waveguide strength, waveguide height; obtaining the communication parameters for sending and receiving signals of the disturbed base station in the wireless communication network, wherein the communication parameters include at least one of the following: first latitude and longitude coordinates, transmitting antenna height, receiving antenna height, and the first number of base stations in the wireless communication network.

[0008] Optionally, determining the first atmospheric waveguide ray trajectory based on the channel parameters includes: using a bifold line model to generate a simulated ray trajectory in an atmospheric waveguide environment; obtaining the position coordinates of any two points on the simulated ray trajectory, and determining a change in the simulated ray trajectory based on the position coordinates of the any two points, wherein the position coordinates include: horizontal distance, vertical height, and a first angle between the ray trajectory direction and the horizontal direction; and determining the first atmospheric waveguide ray trajectory based on the simulated ray trajectory change and the environmental parameters.

[0009] Optionally, determining the first atmospheric waveguide ray trajectory based on the simulated ray trajectory change and environmental parameters includes: determining the second atmospheric waveguide ray trajectory in a three-dimensional coordinate system using the Eikonal equation and the Snell criterion based on the simulated ray trajectory change and the environmental parameters; and converting the second atmospheric waveguide ray trajectory in the three-dimensional coordinate system into the first atmospheric waveguide ray trajectory in a two-dimensional coordinate system.

[0010] Optionally, calculating the first single-hop distance interval of the disturbed base station based on the first atmospheric waveguide ray trajectory includes: obtaining the trapping angle interval of the disturbed base station based on the first atmospheric waveguide ray trajectory, wherein the trapping angle interval is used to reflect the angle range between the maximum vertical angle and the minimum vertical angle of the signal transmitted by the disturbed base station; determining the first single-hop distance interval of the disturbed base station based on the first atmospheric waveguide ray trajectory and the trapping angle interval in the two-dimensional coordinate system, wherein the first single-hop distance interval is determined by the first maximum single-hop distance and the first minimum single-hop distance.

[0011] Optionally, the propagation delay interval of the interfered base station transmitted from the disturbed base station to any interfering base station in the wireless communication network is calculated based on the first single-hop distance interval and the preset speed of light value, including: converting the first maximum single-hop distance and the first minimum single-hop distance of the first single-hop distance interval into Pythagorean theorem form to obtain a second single-hop distance interval, wherein the second single-hop distance interval is determined by the second maximum single-hop distance and the second minimum single-hop distance; and calculating the propagation delay interval of the interfered base station transmitted from the disturbed base station to any interfering base station in the wireless communication network based on the second single-hop distance interval and the speed of light value.

[0012] Optionally, converting the first maximum single-hop distance and the first minimum single-hop distance of the first single-hop distance interval into a Pythagorean theorem form to obtain a second single-hop distance interval includes: obtaining the second longitude and latitude coordinates of any interfering base station in the wireless communication network, and determining a second angle from the disturbed base station to the interfering base station based on the first longitude and latitude coordinates and the second longitude and latitude coordinates; determining the atmospheric waveguide interference distance from the disturbed base station to any interfering base station in the wireless communication network based on the second angle and the radius of the earth, and determining the number interval of the number of ray jumps from the disturbed base station to the interfering base station based on the atmospheric waveguide interference distance and the first single-hop distance interval, wherein the number interval of the number of ray jumps is determined by the maximum number of jumps and the minimum number of jumps; respectively calculating the height difference and the height sum between the transmitting antenna height and the receiving antenna height of the disturbed base station; determining the second minimum single-hop distance by the square value of the atmospheric waveguide interference distance, the square value of the product of the minimum number of jumps and the height difference, and determining the second maximum single-hop distance by the square value of the product of the atmospheric waveguide interference distance, the maximum number of jumps and the height sum; and determining the second single-hop distance interval based on the second maximum single-hop distance and the second minimum single-hop distance.

[0013] According to another aspect of an embodiment of the present application, an atmospheric waveguide interference suppression device is also provided, including: an acquisition module, configured to acquire channel parameters of a wireless communication network in which a disturbed base station is located, wherein the wireless communication network includes multiple base stations, and the channel parameters include: environmental parameters and communication parameters; a first determination module, configured to determine a first atmospheric waveguide ray trajectory based on the channel parameters, and determine a first single-hop distance interval of the disturbed base station based on the first atmospheric waveguide ray trajectory; a second determination module, configured to determine a propagation delay interval from the disturbed base station to any disturbing base station in the wireless communication network based on the first single-hop distance interval and a preset speed of light value, and determine an average propagation delay of the disturbed base station based on the propagation delay interval; a third determination module, configured to determine a target timing gap ratio result corresponding to the average propagation delay based on a matching result between the average propagation delay and a preset timing gap ratio table, and suppress the atmospheric waveguide interference based on the target timing gap ratio result.

[0014] According to another aspect of an embodiment of the present application, a non-volatile storage medium is further provided, which includes a stored program, wherein the device where the non-volatile storage medium is located executes the above-mentioned atmospheric waveguide interference suppression method by running the program.

[0015] According to another aspect of an embodiment of the present application, an electronic device is further provided, comprising: a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to execute the above-mentioned atmospheric duct interference suppression method through the computer program.

[0016] In an embodiment of the present application, channel parameters of a wireless communication network in which a disturbed base station is located are obtained, wherein the wireless communication network includes multiple base stations, and the channel parameters include: environmental parameters and communication parameters; a first atmospheric waveguide ray trajectory is determined based on the channel parameters, and a first single-hop distance interval of the disturbed base station is determined based on the first atmospheric waveguide ray trajectory; a propagation delay interval from the disturbed base station to any disturbing base station in the wireless communication network is determined based on the first single-hop distance interval and a preset speed of light value, and an average propagation delay of the disturbed base station is determined based on the propagation delay interval; a target timing gap ratio result corresponding to the average propagation delay is determined based on a matching result between the average propagation delay and a preset timing gap ratio table, and atmospheric waveguide interference is suppressed based on the target timing gap ratio result.

[0017] In the above process, the ray trajectory in the atmospheric waveguide is calculated by setting environmental parameters and system parameters, and the propagation delay interval from the disturbed base station to any interfering base station in the wireless communication network is determined based on the atmospheric waveguide ray trajectory, and the average propagation delay of the disturbed base station is calculated based on the propagation delay interval. The special time slot ratio result is determined based on the average propagation delay of the disturbed base station, so as to achieve early warning before the atmospheric waveguide interference occurs and prevent the transmission of large network problems, thereby solving the technical problem that the relevant technology cannot predict the atmospheric waveguide interference when the precise propagation delay is unknown. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 is a schematic diagram of an optional communication system architecture according to an embodiment of the present application;

[0020] Figure 2 is a flow chart of an optional atmospheric duct interference suppression method according to an embodiment of the present application;

[0021] Figure 3 is a schematic diagram of a simulated ray trajectory in an optional air waveguide environment according to an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of an optional atmospheric waveguide ray propagation according to an embodiment of the present application;

[0023] Figure 5 This is a schematic diagram of comparing indicators before and after adjusting the timing gap ratio according to an optional embodiment of the present application;

[0024] Figure 6 This is a schematic diagram of the structure of an optional atmospheric waveguide interference suppression device according to an embodiment of the present application.

[0025] Figure 7 It is a schematic structural diagram of an optional electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] In addition, the relevant information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for display, data for analysis, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. For example, an interface is set up between this system and the relevant user or organization. Before obtaining relevant information, it is necessary to send an acquisition request to the aforementioned user or organization through the interface, and obtain the relevant information after receiving the consent information fed back by the aforementioned user or organization.

[0029] Example 1

[0030] According to the present application, an embodiment provides a method for suppressing atmospheric duct interference. The specific execution steps of the method are described in detail below. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system, such as a set of computer-executable instructions, and although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in a different order than herein.

[0031] Figure 1 FIG1 is a schematic diagram of an optional communication system architecture according to an embodiment of the present application. The communication system includes: a base station 10 (which can be considered as an interfering base station), a base station 20 (which can be considered as an interfered base station), a terminal 30, and a terminal 40. In addition, the communication system also includes a computer device 50, wherein the computer device 50 is connected to the base station 10 and / or the base station 20 via a wired / wireless connection.

[0032] Base station 10 transmits a downlink wireless signal to terminal 30 connected to base station 10. Due to the presence of atmospheric ducts, base station 10 transmits this downlink wireless signal to base station 20. Terminal 40 connected to base station 20, in turn, transmits an uplink wireless signal to base station 20. When base station 20 receives the uplink wireless signal from terminal 40, it also receives the downlink wireless signal from base station 10. Therefore, the downlink wireless signal from base station 10 interferes with the uplink wireless signal from base station 20, a phenomenon known as atmospheric duct interference.

[0033] The terminals 30 and 40 may be user equipment (UE), access terminals, terminal units, terminal stations, mobile stations, mobile stations, remote stations, remote terminals, mobile devices, wireless communication devices, vehicle user equipment, terminal agents, or terminal devices. Alternatively, the terminals may be various handheld devices, vehicle-mounted devices, wearable devices, or computers with communication functions, which are not limited in this embodiment of the present application. For example, the handheld device may be a smartphone. The vehicle-mounted device may be a vehicle-mounted navigation system. The wearable device may be a smart bracelet.

[0034] It should be noted that computer equipment, servers, gateways, base stations, core network elements, etc. can all serve as the execution entities of the technical solution of this application. The following uses computer equipment as an example to introduce the technical solution provided in the embodiments of this application.

[0035] Figure 2 FIG. 1 is a flow chart of an optional atmospheric duct interference suppression method according to an embodiment of the present application, such as Figure 2 As shown, the method includes at least steps S202-S208, wherein:

[0036] Step S202: Acquire channel parameters of the wireless communication network where the interfered base station is located, wherein the wireless communication network includes multiple base stations, and the channel parameters include: environmental parameters and communication parameters.

[0037] Specifically, the computer device obtains current environmental parameters and current communication parameters of the wireless communication network where the interfered base station is located.

[0038] Optionally, the environmental parameters of the disturbed base station are obtained, wherein the environmental parameters include at least one of the following: the radius of the earth, the broken line factor, the waveguide strength, and the waveguide height; the communication parameters for sending and receiving signals of the disturbed base station in the wireless communication network are obtained, wherein the communication parameters include at least one of the following: the first latitude and longitude coordinates, the transmitting antenna height, the receiving antenna height, and the first number of base stations in the wireless communication network.

[0039] Among the above environmental parameters, the radius of the earth can be represented by R, the refractive factor can be represented by n, the waveguide strength can be represented by ΔM, and the waveguide height can be represented by h.e Indicates that the first latitude and longitude coordinates of the disturbed base station in the communication parameters can be represented by gnb1=(Lon1, Lat1), and the height of the transmitting antenna can be represented by h t The height of the receiving antenna can be expressed as h r The first number of base stations in the wireless communication network can be represented by n.

[0040] Step S204 : determining a first atmospheric waveguide ray trajectory according to the channel parameters, and determining a first single-hop distance interval of the disturbed base station according to the first atmospheric waveguide ray trajectory.

[0041] The computer device simulates the ray trajectory in the atmospheric waveguide environment according to the radius of the earth, then determines the first atmospheric waveguide ray trajectory according to the channel parameters, and determines the first single-hop distance interval of the disturbed base station based on the first atmospheric waveguide ray trajectory.

[0042] As an optional implementation, the first atmospheric waveguide ray trajectory may be determined through the following steps S2041-S2043:

[0043] Step S2041, using a double-broken-line model to generate simulated ray trajectories in an atmospheric waveguide environment;

[0044] Step S2042: obtaining the position coordinates of any two points on the simulated ray trajectory, and determining the amount of change in the simulated ray trajectory based on the position coordinates of the any two points, wherein the position coordinates include: horizontal distance, vertical height, and a first angle between the ray trajectory direction and the horizontal direction;

[0045] Step S2043 : determining a first atmospheric waveguide ray trajectory based on the simulated ray trajectory variation and the environmental parameters.

[0046] In the technical solution provided in step S2043, the Eikonal equation and the Snell criterion can also be used to determine the second atmospheric waveguide ray trajectory in the three-dimensional coordinate system based on the simulated ray trajectory change and environmental parameters; and the second atmospheric waveguide ray trajectory in the three-dimensional coordinate system is converted into the first atmospheric waveguide ray trajectory in the two-dimensional coordinate system.

[0047] Specifically, the Eikonal equation is a partial differential equation that describes the propagation speed and direction of the wavefront, which is commonly used to describe the propagation of wave phenomena in fields such as optics and acoustics; and the Snell criterion refers to the relationship between the angle of incidence and the angle of refraction at the boundary between media. Therefore, in an embodiment of the present application, the Snell criterion is used to solve the Eikonal equation to determine the refraction angle of the waveguide ray trajectory between different media, thereby deriving the path of the waveguide signal propagating in the Earth's atmosphere. At the same time, considering that the shape of the earth will affect the waveguide ray trajectory, it is also necessary to include the radius of the earth in the atmospheric waveguide ray trajectory to improve the accuracy and reliability of the model design trajectory.

[0048] Specifically, Figure 3 is a schematic diagram of a simulated ray trajectory in an optional air waveguide environment according to an embodiment of the present application, such as Figure 3 As shown in the figure, the line segment (a) represents the real change of the sea level refractive index, the line segment (b) represents the approximate change of the sea level refractive index, and the line segment (c) represents the simulated ray trajectory in the atmospheric waveguide environment generated by the bifold model. By tracing the rays on the line segment (c), the distance between any two points A(x A ,z A ,θ A ) and point B(x B ,z B ,θ B ), where x represents the horizontal distance, z represents the vertical height, and θ represents the angle between the ray direction and the horizontal direction. A ,z A ,θ A ) and point B(x B ,z B ,θ B ) Determine the change in the simulated ray trajectory Δx = x B -x A , Δz=z B -z A and Δθ=θ B -θ A .

[0049] Next, using the Eikonal equation and Snell criterion, combined with the spherical shape of the earth, the trajectory of the second atmospheric waveguide ray in the three-dimensional coordinate system is obtained, and its expression can be written as:

[0050] R·n(z)cosθ=(R+Δz)n(z+Δz)cos(θ+Δθ)

[0051] Combine Figure 3 The simulated ray trajectory shown is not difficult to deduce Substituting it into the above formula, we can get the following expression:

[0052]

[0053] in,

[0054] Then, according to the trigonometric function induction formula, cos(θ+Δθ) in the above formula is expanded to obtain the following expression:

[0055]

[0056] Since Δz and Δθ are both small values, cos(Δθ)≈1, sin(Δθ)≈Δθ, so the above expression can be written as:

[0057]

[0058] Where Δz 2 =Δθ 2 =Δz*Δθ=0, so the above formula can also be written as:

[0059]

[0060] Since both ends of the above formula have R·n(z)cosθ, we can simplify R·n(z)cosθ to obtain

[0061]

[0062] Shifting Rn(z)sin(θ)Δθ to the right, we get Dividing both sides of the above expression by RΔzn(z)cos(θ) yields the following expression:

[0063]

[0064] Since the value of n(z) changes slightly and K is a constant, we can Substituting into the supremacy formula we get When Δx approaches zero, Therefore, the second atmospheric waveguide ray trajectory can be simplified to:

[0065]

[0066] Finally, the expression of the second atmospheric waveguide ray trajectory is further written as z″=K. Therefore, the second atmospheric waveguide ray trajectory can be converted into a two-dimensional coordinate system (x, z) by two integrations to obtain the expression of the first atmospheric waveguide ray trajectory. Among them, one integration can be performed to obtain: z′=Kx+θ t , and then perform the second integration to obtain: Therefore, the expression of the trajectory of the first atmospheric waveguide ray is obtained. t Indicates the vertical angle of the signal transmitted by the interfered base station.

[0067] Furthermore, after obtaining the first atmospheric waveguide ray trajectory, the computer device can also obtain the trapping angle interval of the disturbed base station based on the first atmospheric waveguide ray trajectory, wherein the trapping angle interval is used to reflect the angle interval between the maximum vertical angle and the minimum vertical angle of the signal transmitted by the disturbed base station; based on the first atmospheric waveguide ray trajectory and the trapping angle interval in the two-dimensional coordinate system, determine the first single-hop distance interval of the disturbed base station, wherein the first single-hop distance interval includes: a first maximum single-hop distance and a first minimum single-hop distance.

[0068] Specifically, the trapping angle range of the interfered base station can be obtained according to the first atmospheric waveguide ray trajectory and the following derivation process:

[0069] First, according to the first atmospheric waveguide ray trajectory The expression for the waveguide height is obtained:

[0070]

[0071] Then, simplify the above expression to get the following expression:

[0072]

[0073] Then, the above expression can be used to obtain θ t 2 The expression:

[0074] θ t 2 =2K(h t -h e )

[0075] Finally, the t 2 Taking the square root, we can get the expression of the trapped angle interval:

[0076]

[0077] in, Used to indicate the maximum vertical angle, Used to indicate the minimum vertical angle.

[0078] According to the first atmospheric waveguide ray trajectory and trap angle interval Determine the first single-hop distance interval d of the interfered base station, which is expressed as:

[0079]

[0080] Among them, the expression of the first maximum single-hop distance is The expression of the first minimum single-hop distance is

[0081] Step S206: determining a propagation delay interval from the disturbed base station to any disturbing base station in the wireless communication network based on the first single-hop distance interval and a preset light speed value, and determining an average propagation delay of the disturbed base station based on the propagation delay interval.

[0082] Since the single-hop distance of the interfered base station is usually long, the computer device can also simplify the above-mentioned first single-hop distance interval d into the form of calculating the hypotenuse of a right triangle (i.e., the Pythagorean theorem form), and then calculate the propagation delay interval based on the second single-hop distance interval.

[0083] As an optional implementation, the first maximum single-hop distance and the first minimum single-hop distance of the first single-hop distance interval are converted into Pythagorean theorem form to obtain a second single-hop distance interval, wherein the second single-hop distance interval includes: the second maximum single-hop distance and the second minimum single-hop distance; based on the second single-hop distance interval and the speed of light value, the propagation delay interval of the interfered base station to any interfering base station in the wireless communication network is calculated.

[0084] Optionally, the second single-hop distance interval may be obtained according to the following steps S2061-S2064, including:

[0085] Step S2061: Obtain a second longitude and latitude coordinate of any interfering base station in the wireless communication network, and determine a second angle from the interfered base station to the interfering base station based on the first longitude and latitude coordinates and the second longitude and latitude coordinates;

[0086] Step S2062: Determine an atmospheric waveguide interference distance from the disturbed base station to any disturbing base station in the wireless communication network based on the second angle and the radius of the earth, and determine a number interval of ray hops from the disturbed base station to the disturbing base station based on the atmospheric waveguide interference distance and the first single-hop distance interval, where the number interval of ray hops is determined by a maximum number of hops and a minimum number of hops.

[0087] Step S2063, respectively calculating the height difference and height sum of the transmitting antenna height and the receiving antenna height of the interfered base station;

[0088] Step S2064: Determine a second minimum single-hop distance by the square of the atmospheric duct interference distance and the square of the product of the minimum number of hops and the height difference, and determine a second maximum single-hop distance by the square of the atmospheric duct interference distance and the square of the product of the maximum number of hops and the height sum;

[0089] Step S2065: Determine a second single-hop distance interval according to the second maximum single-hop distance and the second minimum single-hop distance.

[0090] Specifically, first obtain the second longitude and latitude coordinates gnb2 = (Lon2, Lat2) of any interfering base station in the wireless communication network, and determine the second angle from the interfered base station to the interfering base station based on the first longitude and latitude coordinates gnb1 = (Lon1, Lat1) and the second longitude and latitude coordinates gnb2 = (Lon2, Lat2). The expression of the second angle is:

[0091]

[0092] Then, the atmospheric waveguide interference distance d from the interfered base station to any interfering base station in the wireless communication network is determined based on the second angle Angle and the earth radius R. gnb1-gnb2 , whose expression is:

[0093]

[0094] Figure 4 is a schematic diagram of an optional atmospheric waveguide ray propagation according to an embodiment of the present application, such as Figure 4 As shown in the figure, the atmospheric waveguide propagation process involves multiple ray jumps, so the atmospheric waveguide interference distance d can be calculated based on gnb1-gnb2 The number interval n0 of the number of ray jumps from the disturbed base station to the interfering base station is calculated based on the first maximum single-hop distance and the first minimum single-hop distance in the first single-hop distance interval. The expression can be written as:

[0095] n0=[d gnb1-gnb2 / d max ,d gnb1-gnb2 / d min ]

[0096] Among them, the expression of the maximum number of jumps is n 0max =d gnb1-gnb2 / d min , the expression of the minimum number of jumps is n 0min =d gnb1-gnb2 / d max .

[0097] Then, calculate the height difference h between the transmitting antenna height and the receiving antenna height of the interfered base station t -h r and height and h t +h r .

[0098] Finally, the square of the atmospheric duct interference distance d gnbA-gnbB 2 , the square value of the product of the minimum number of jumps and the height difference [n0min (h t -h r )] 2 Determine the second minimum single-hop distance And the square value of the atmospheric waveguide interference distance d gnbA-gnbB 2 , the square of the product of the maximum number of jumps and the height [n 0max (h t +h r )] 2 Determine the second maximum single-hop distance Therefore, the second single-hop distance interval of the interfered base station can be written as:

[0099]

[0100] Furthermore, the propagation delay interval t of the interference base station to any interfering base station in the wireless communication network is calculated based on the second single-hop distance interval d and the speed of light value e. Therefore, the expression of the propagation delay interval t can be written as: t = d / e, where the speed of light value e is usually taken as e = 3×10 8 m / s.

[0101] Through the above calculation process, the propagation delay interval from the interfered base station to the N interfering base stations in the wireless communication network can be obtained, and then the average result of the N propagation delay intervals is calculated to obtain the average propagation delay of the interfered base station.

[0102] Step S208 : determining a target timing gap matching result corresponding to the average propagation delay based on the matching result between the average propagation delay and the preset timing gap matching table, and suppressing atmospheric duct interference based on the target timing gap matching result.

[0103] As an optional implementation, the embodiment of the present application provides an optional timing gap ratio table, such as Table 1.

[0104] Table 1

[0105]

[0106]

[0107] The table above determines whether the average propagation delay belongs to the delay interval, thereby determining the target timing slot ratio corresponding to the delay interval. Atmospheric waveguide interference is suppressed based on the target timing slot ratio. This eliminates the need to use additional equipment to obtain the transmit and receive delays between the victim and interfering base stations. The average propagation delay match and appropriate slot ratio with the victim base station can be determined. Furthermore, there is no need for point-to-point testing; interference detection can be performed at the victim base station using the synchronization signal sent by the interfering base station.

[0108] For example, when the environmental parameters are earth radius R = 6370km, refraction factor n = 1.00035, waveguide strength ΔM = 40, waveguide height h e =40m; communication parameters: number of base stations N = 13369, base station longitude and latitude (Lon, Lat), transmitting antenna height h t =30m, receiving antenna height h r =10m, speed of light e=3×10 8 m / s, the average propagation delay of the interfered base station can be calculated as 0.00010514s according to the above method. Therefore, according to the above timing ratio table, it can be determined to adopt a special time slot ratio of 9:3:2, so that the indicators after the time slot ratio adjustment are improved. For example, Figure 5 As shown in the figure, it is not difficult to see that the SA (Standalone, independent networking) wireless access success rate and UE context drop rate have been significantly improved.

[0109] Based on the scheme defined in steps S202 to S208 above, it can be learned that, in an embodiment, channel parameters of the wireless communication network in which the interfered base station is located are obtained, wherein the wireless communication network includes multiple base stations, and the channel parameters include: environmental parameters and communication parameters; a first atmospheric waveguide ray trajectory is determined based on the channel parameters, and a first single-hop distance interval of the interfered base station is determined based on the first atmospheric waveguide ray trajectory; a propagation delay interval from the interfered base station to any interfering base station in the wireless communication network is determined based on the first single-hop distance interval and a preset speed of light value, and an average propagation delay of the interfered base station is determined based on the propagation delay interval; a target timing gap ratio result corresponding to the average propagation delay is determined based on a matching result between the average propagation delay and a preset timing gap ratio table, and atmospheric waveguide interference is suppressed based on the target timing gap ratio result.

[0110] It can be seen that the technical solution of the embodiment of the present application accurately describes, from the perspective of physical composition, the multiple jump reflections of ray propagation in the atmospheric waveguide layer, and accurately calculates the ray receiving and sending distances, thereby obtaining the channel propagation delays of different rays; at the same time, the solution of the present application does not require additional equipment to obtain the receiving and sending delays of the interfered base station and the interfering base station, and can determine the average propagation delay of the interfered base station, thereby matching the appropriate special time slot ratio, achieving the purpose of reducing efficiency, and thus solving the technical problem that the related technology cannot predict atmospheric waveguide interference when the precise propagation delay is unknown.

[0111] Example 2

[0112] Based on embodiment 1 of the present application, an embodiment of an atmospheric duct interference suppression device is also provided, and the atmospheric duct interference suppression method of the above embodiment is executed when the device is running. Figure 6is a schematic structural diagram of an optional atmospheric waveguide interference suppression device according to an embodiment of the present application, such as Figure 6 As shown, the atmospheric duct interference suppression device includes at least an acquisition module 61, a first determination module 63, a second determination module 65 and a third determination module 67, wherein:

[0113] The acquisition module 61 is configured to acquire channel parameters of a wireless communication network in which the interfered base station is located. The wireless communication network includes multiple base stations, and the channel parameters include environmental parameters and communication parameters.

[0114] Specifically, the acquisition module 61 acquires the current environment parameters and current communication parameters of the wireless communication network where the interfered base station is located.

[0115] Optionally, the acquisition module 61 first acquires the environmental parameters of the disturbed base station, wherein the environmental parameters include at least one of the following: earth radius, broken line factor, waveguide strength, and waveguide height; the acquisition module 61 then acquires the communication parameters of the disturbed base station for communication in the wireless communication network, wherein the communication parameters include at least one of the following: first latitude and longitude coordinates, transmitting antenna height, receiving antenna height, and the first number of base stations in the wireless communication network.

[0116] Among the above environmental parameters, the radius of the earth can be represented by R, the refractive factor can be represented by n, the waveguide strength can be represented by ΔM, and the waveguide height can be represented by h. e Indicates that the first latitude and longitude coordinates of the disturbed base station in the communication parameters can be represented by gnb1=(Lon1, Lat1), and the height of the transmitting antenna can be represented by h t The height of the receiving antenna can be expressed as h r The first number of base stations in the wireless communication network can be represented by n.

[0117] The first determining module 63 is configured to determine a first atmospheric waveguide ray trajectory according to the channel parameters, and determine a first single-hop distance interval of the disturbed base station according to the first atmospheric waveguide ray trajectory.

[0118] The first determination module 63 simulates the ray trajectory in the atmospheric waveguide environment according to the earth radius, determines the first atmospheric waveguide ray trajectory according to the channel parameters, and determines the first single-hop distance interval of the disturbed base station based on the first atmospheric waveguide ray trajectory.

[0119] As an optional implementation, the first determination module 63 can determine the first atmospheric waveguide ray trajectory in the following manner: based on environmental parameters, a simulated ray trajectory in the atmospheric waveguide environment is generated using a bifold line model; the position coordinates of any two points on the simulated ray trajectory are obtained, and a change in the simulated ray trajectory is determined based on the position coordinates of the any two points, wherein the position coordinates include: horizontal distance, vertical height, and a first angle between the ray trajectory direction and the horizontal direction; and the first atmospheric waveguide ray trajectory is determined based on the change in the simulated ray trajectory and the environmental parameters.

[0120] Optionally, the first determination module 63 can also determine the second atmospheric waveguide ray trajectory in the three-dimensional coordinate system based on the simulated ray trajectory change and environmental parameters, and use the Eikonal equation and the Snell criterion; and convert the second atmospheric waveguide ray trajectory in the three-dimensional coordinate system into the first atmospheric waveguide ray trajectory in the two-dimensional coordinate system.

[0121] The second determining module 65 is configured to determine a propagation delay interval from the disturbed base station to any disturbing base station in the wireless communication network based on the first single-hop distance interval and a preset light speed value, and determine an average propagation delay of the disturbed base station based on the propagation delay interval.

[0122] Since the single-hop distance of the interfered base station is usually long, the second determination module 65 can also simplify the above-mentioned first single-hop distance interval d into the form of calculating the hypotenuse of a right triangle (i.e., the Pythagorean theorem form), and then calculate the propagation delay interval based on the second single-hop distance interval.

[0123] As an optional implementation, the second determination module 65 first converts the first maximum single-hop distance and the first minimum single-hop distance of the first single-hop distance interval into the Pythagorean theorem form to obtain a second single-hop distance interval, wherein the second single-hop distance interval includes: the second maximum single-hop distance and the second minimum single-hop distance; and then calculates the propagation delay interval of the interfered base station to any interfering base station in the wireless communication network based on the second single-hop distance interval and the speed of light value.

[0124] Optionally, the second determination module 65 can obtain the second single-hop distance interval according to the following method, including: obtaining the second longitude and latitude coordinates of any interfering base station in the wireless communication network, and determining the second angle from the disturbed base station to the interfering base station based on the first longitude and latitude coordinates and the second longitude and latitude coordinates; determining the atmospheric waveguide interference distance from the disturbed base station to any interfering base station in the wireless communication network based on the second angle and the radius of the earth, and determining the number interval of the number of ray jumps from the disturbed base station to the interfering base station based on the atmospheric waveguide interference distance and the first single-hop distance interval, wherein the number interval of the number of ray jumps is determined by the maximum number of jumps and the minimum number of jumps; respectively calculating the height difference and the height sum between the transmitting antenna height and the receiving antenna height of the disturbed base station; determining the second minimum single-hop distance by the square value of the atmospheric waveguide interference distance, the square value of the product of the minimum number of jumps and the height difference, and determining the second maximum single-hop distance by the square value of the product of the atmospheric waveguide interference distance, the maximum number of jumps and the height sum; determining the second single-hop distance interval based on the second maximum single-hop distance and the second minimum single-hop distance.

[0125] The third determining module 67 is configured to determine a target timing gap matching result corresponding to the average propagation delay based on a matching result between the average propagation delay and a preset timing gap matching table, and suppress atmospheric duct interference based on the target timing gap matching result.

[0126] In an embodiment, channel parameters of a wireless communication network in which a disturbed base station is located are obtained, wherein the wireless communication network includes multiple base stations, and the channel parameters include: environmental parameters and communication parameters; a first atmospheric waveguide ray trajectory is determined based on the channel parameters, and a first single-hop distance interval of the disturbed base station is determined based on the first atmospheric waveguide ray trajectory; a propagation delay interval from the disturbed base station to any disturbing base station in the wireless communication network is determined based on the first single-hop distance interval and a preset speed of light value, and an average propagation delay of the disturbed base station is determined based on the propagation delay interval; a target timing gap ratio result corresponding to the average propagation delay is determined based on a matching result between the average propagation delay and a preset timing gap ratio table, and atmospheric waveguide interference is suppressed based on the target timing gap ratio result.

[0127] It can be seen that the technical solution of the embodiment of the present application accurately describes, from the perspective of physical composition, the multiple jump reflections of ray propagation in the atmospheric waveguide layer, and accurately calculates the ray receiving and sending distances, thereby obtaining the channel propagation delays of different rays; at the same time, the solution of the present application does not require additional equipment to obtain the receiving and sending delays of the interfered base station and the interfering base station, and can determine the average propagation delay of the interfered base station, thereby matching the appropriate special time slot ratio, achieving the purpose of reducing efficiency, and thus solving the technical problem that the related technology cannot predict atmospheric waveguide interference when the precise propagation delay is unknown.

[0128] It should be noted that the modules in the atmospheric waveguide interference suppression device in the embodiment of the present application correspond one-to-one to the implementation steps of the atmospheric waveguide interference suppression method in Example 1. Since a detailed description has been given in Example 1, some details not reflected in this embodiment can be referred to Example 1, and will not be repeated here.

[0129] In addition, each module in the above-mentioned atmospheric waveguide interference suppression device can be a program module (for example, a set of program instructions that implement a certain specific function) or a hardware module. For the latter, it can be expressed in the following form, but is not limited to this: the expression form of each of the above-mentioned modules is a processor, or the functions of each of the above-mentioned modules are implemented by a processor.

[0130] Example 3

[0131] According to an embodiment of the present application, a non-volatile storage medium is further provided, in which a program is stored. When the program is running, the device where the non-volatile storage medium is located is controlled to execute the atmospheric waveguide interference suppression method in Example 1.

[0132] Optionally, the device where the non-volatile storage medium is located implements the following steps by running the program:

[0133] Step S202: Acquire channel parameters of a wireless communication network in which the interfered base station is located, wherein the wireless communication network includes multiple base stations, and the channel parameters include: environmental parameters and communication parameters;

[0134] Step S204: determining a first atmospheric waveguide ray trajectory according to the channel parameters, and determining a first single-hop distance interval of the disturbed base station according to the first atmospheric waveguide ray trajectory;

[0135] Step S206: determining a propagation delay interval from the disturbed base station to any disturbing base station in the wireless communication network based on the first single-hop distance interval and a preset speed of light value, and determining an average propagation delay of the disturbed base station based on the propagation delay interval;

[0136] Step S208 : determining a target timing gap matching result corresponding to the average propagation delay based on the matching result between the average propagation delay and the preset timing gap matching table, and suppressing atmospheric duct interference based on the target timing gap matching result.

[0137] Example 4

[0138] According to an embodiment of the present application, a processor is further provided, which is used to run a program, wherein the atmospheric duct interference suppression method in Example 1 is executed when the program is run.

[0139] Optionally, the following steps are performed when the program is running:

[0140] Step S202: Acquire channel parameters of a wireless communication network in which the interfered base station is located, wherein the wireless communication network includes multiple base stations, and the channel parameters include: environmental parameters and communication parameters;

[0141] Step S204: determining a first atmospheric waveguide ray trajectory according to the channel parameters, and determining a first single-hop distance interval of the disturbed base station according to the first atmospheric waveguide ray trajectory;

[0142] Step S206: determining a propagation delay interval from the disturbed base station to any disturbing base station in the wireless communication network based on the first single-hop distance interval and a preset speed of light value, and determining an average propagation delay of the disturbed base station based on the propagation delay interval;

[0143] Step S208 : determining a target timing gap matching result corresponding to the average propagation delay based on the matching result between the average propagation delay and the preset timing gap matching table, and suppressing atmospheric duct interference based on the target timing gap matching result.

[0144] Example 5

[0145] According to an embodiment of the present application, an electronic device is further provided, wherein: Figure 7 is a schematic structural diagram of an optional electronic device according to an embodiment of the present application, such as Figure 7 As shown, the electronic device includes one or more processors; a memory for storing one or more programs, which, when the one or more programs are executed by the one or more processors, enables the one or more processors to run the programs, wherein the programs are configured to execute the atmospheric waveguide interference suppression method in the above-mentioned embodiment 1 when running.

[0146] Optionally, the processor is configured to implement the following steps by executing a computer program:

[0147] Step S202: Acquire channel parameters of a wireless communication network in which the interfered base station is located, wherein the wireless communication network includes multiple base stations, and the channel parameters include: environmental parameters and communication parameters;

[0148] Step S204: determining a first atmospheric waveguide ray trajectory according to the channel parameters, and determining a first single-hop distance interval of the disturbed base station according to the first atmospheric waveguide ray trajectory;

[0149] Step S206: determining a propagation delay interval from the disturbed base station to any disturbing base station in the wireless communication network based on the first single-hop distance interval and a preset speed of light value, and determining an average propagation delay of the disturbed base station based on the propagation delay interval;

[0150] Step S208 : determining a target timing gap matching result corresponding to the average propagation delay based on the matching result between the average propagation delay and the preset timing gap matching table, and suppressing atmospheric duct interference based on the target timing gap matching result.

[0151] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0152] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0153] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0154] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected to achieve the purpose of the present embodiment according to actual needs.

[0155] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0156] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the relevant technology, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0157] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for suppressing atmospheric duct interference, characterized in that: include: Acquire channel parameters of a wireless communication network in which the interfered base station is located, wherein the wireless communication network includes multiple base stations, and the channel parameters include: environmental parameters and communication parameters; determining a first atmospheric waveguide ray trajectory according to the channel parameter, and determining a first single-hop distance interval of the disturbed base station according to the first atmospheric waveguide ray trajectory; Determine a propagation delay interval from the disturbed base station to any disturbing base station in the wireless communication network based on the first single-hop distance interval and a preset speed of light value, and determine an average propagation delay of the disturbed base station based on the propagation delay interval; According to the matching result between the average propagation delay and a preset timing gap matching table, a target timing gap matching result corresponding to the average propagation delay is determined, and atmospheric waveguide interference is suppressed according to the target timing gap matching result.

2. The method according to claim 1, characterized in that Obtain the channel parameters of the wireless communication network where the interfered base station is located, including: Acquire the environmental parameters of the disturbed base station, wherein the environmental parameters include at least one of the following: earth radius, broken line factor, waveguide strength, and waveguide height; Obtain the communication parameters for sending and receiving signals by the interfered base station in the wireless communication network, wherein the communication parameters include at least one of the following: a first latitude and longitude coordinate, a transmitting antenna height, a receiving antenna height, and a first number of base stations in the wireless communication network.

3. The method according to claim 2, characterized in that Determining a first atmospheric waveguide ray trajectory according to the channel parameters includes: A double-broken-line model is used to generate simulated ray trajectories in an atmospheric waveguide environment; Obtaining position coordinates of any two points on the simulated ray trajectory, and determining a change in the simulated ray trajectory based on the position coordinates of the any two points, wherein the position coordinates include: a horizontal distance, a vertical height, and a first angle between the ray trajectory direction and the horizontal direction; The first atmospheric waveguide ray trajectory is determined based on the simulated ray trajectory change and the environmental parameters.

4. The method according to claim 3, characterized in that Determining the first atmospheric waveguide ray trajectory based on the simulated ray trajectory change and the environmental parameter includes: Determining the second atmospheric waveguide ray trajectory in a three-dimensional coordinate system using the Eikonal equation and the Snell criterion according to the simulated ray trajectory change and the environmental parameters; The second atmospheric waveguide ray trajectory in the three-dimensional coordinate system is converted into the first atmospheric waveguide ray trajectory in the two-dimensional coordinate system.

5. The method according to claim 2, characterized in that Calculating a first single-hop distance interval of the disturbed base station according to the first atmospheric waveguide ray trajectory includes: Obtaining a trapping angle interval of the interfered base station according to the first atmospheric waveguide ray trajectory, wherein the trapping angle interval is used to reflect an angle range between a maximum vertical angle and a minimum vertical angle of a transmitted signal of the interfered base station; A first single-hop distance interval of the interfered base station is determined according to the first atmospheric waveguide ray trajectory and the trapping angle interval in a two-dimensional coordinate system, wherein the first single-hop distance interval is determined by a first maximum single-hop distance and a first minimum single-hop distance.

6. The method according to claim 5, characterized in that Calculating a propagation delay interval for transmission from the interfered base station to any interfering base station in the wireless communication network based on the first single-hop distance interval and a preset speed of light value includes: Converting the first maximum single-hop distance and the first minimum single-hop distance of the first single-hop distance interval into a Pythagorean theorem form to obtain a second single-hop distance interval, wherein the second single-hop distance is determined by the second maximum single-hop distance and the second minimum single-hop distance; The propagation delay interval of the interfered base station transmitted to any one of the interfering base stations in the wireless communication network is calculated based on the second single-hop distance interval and the speed of light value.

7. The method according to claim 6, characterized in that Converting the first maximum single-hop distance and the first minimum single-hop distance in the first single-hop distance interval into a Pythagorean theorem form to obtain a second single-hop distance interval includes: Obtaining a second longitude and latitude coordinate of any one of the interfering base stations in the wireless communication network, and determining a second angle from the interfered base station to the interfering base station based on the first longitude and latitude coordinates and the second longitude and latitude coordinates; Determine, based on the second angle and the earth radius, an atmospheric waveguide interference distance from the disturbed base station to any one of the disturbing base stations in the wireless communication network, and determine, based on the atmospheric waveguide interference distance and the first single-hop distance interval, an interval of the number of ray hops from the disturbed base station to the disturbing base station, wherein the interval of the number of ray hops is determined by a maximum number of hops and a minimum number of hops; Calculating respectively a height difference and a height sum of the transmitting antenna height and the receiving antenna height of the interfered base station; Determining the second minimum single-hop distance by the square value of the atmospheric duct interference distance and the square value of the product of the minimum number of hops and the height difference, and determining the second maximum single-hop distance by the square value of the atmospheric duct interference distance and the square value of the product of the maximum number of hops and the height sum; The second single-hop distance interval is determined according to the second maximum single-hop distance and the second minimum single-hop distance.

8. An atmospheric waveguide interference suppression device, characterized in that: include: An acquisition module is configured to acquire channel parameters of a wireless communication network in which the disturbed base station is located, wherein the wireless communication network includes multiple base stations, and the channel parameters include: environmental parameters and communication parameters; a first determining module, configured to determine a first atmospheric waveguide ray trajectory according to the channel parameter, and determine a first single-hop distance interval of the disturbed base station according to the first atmospheric waveguide ray trajectory; a second determining module, configured to determine a propagation delay interval from the disturbed base station to any disturbing base station in the wireless communication network based on the first single-hop distance interval and a preset speed of light value, and determine an average propagation delay of the disturbed base station based on the propagation delay interval; The third determining module is used to determine a target timing gap ratio result corresponding to the average propagation delay based on a matching result between the average propagation delay and a preset timing gap ratio table, and suppress atmospheric duct interference based on the target timing gap ratio result.

9. A non-volatile storage medium, characterized in that: The non-volatile storage medium includes a stored program, wherein the device where the non-volatile storage medium is located executes the atmospheric duct interference suppression method according to any one of claims 1 to 7 by running the program.

10. An electronic device, characterized in that: include: A memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the atmospheric duct interference suppression method according to any one of claims 1 to 7 through the computer program.

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