CN116600337A - Atmospheric waveguide interference suppression method and device - Google Patents
Atmospheric waveguide interference suppression method and device Download PDFInfo
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Abstract
The application discloses an atmospheric waveguide interference suppression method and device. Wherein the method comprises the following steps: obtaining channel parameters of a wireless communication network where a disturbed base station is located, wherein the wireless communication network comprises a plurality of base stations; determining a first atmospheric waveguide ray track 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 track; determining a propagation delay interval from the interfered base station to any one interference applying base station in the wireless communication networking based on the first single-hop distance interval and a preset light speed value, and determining average propagation delay of the interfered base station based on the propagation delay interval; and determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting atmospheric waveguide interference according to the target time sequence gap proportioning result. The method solves the technical problem that the atmospheric waveguide interference cannot be predicted under the condition of unknown accurate propagation delay in the related technology.
Description
Technical Field
The application relates to the technical field of communication, in particular to an atmospheric waveguide interference suppression method and device.
Background
Under certain meteorological conditions, the electromagnetic wave is affected by atmospheric refraction in the process of transmission in an atmosphere layer, so that the propagation track of the electromagnetic wave is bent to the ground, and when the curvature of the propagation track of the electromagnetic wave exceeds the surface curvature of the earth, part of the electromagnetic wave is trapped in an atmosphere thin layer, and the phenomenon is called an atmosphere waveguide phenomenon. In a wireless communication system, because the atmospheric waveguide phenomenon generally causes co-channel interference of a far-end base station, the co-channel interference is mainly represented by that when a signal of a near-end scrambling base station reaches a far-end scrambling base station, a situation that time slots are misplaced due to propagation delay occurs, and a downlink wireless signal of the near-end scrambling base station can interfere an uplink wireless signal of the far-end scrambling base station, so that atmospheric waveguide interference is generated.
At present, when the related technology predicts the atmospheric waveguide interference, the transmission density of a cell reference signal CRS of a target base station is reduced and a downlink OFDM symbol is modified on the premise of known signal propagation delay so as to avoid the situation of time slot dislocation caused by the propagation delay; for the acquisition of the propagation delay, the related technology adopts a plurality of shipborne AIS (Automatic Identification System ) devices to acquire the receiving and transmitting delay of signals, but the method is a test result between point to point, and does not have the advanced early warning and universal applicability characteristics required by large network application.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the application provides an atmospheric waveguide interference suppression method and device, which at least solve the technical problem that the atmospheric waveguide interference cannot be predicted under the condition of unknown accurate propagation delay in the related technology.
According to an aspect of an embodiment of the present application, there is provided an atmospheric waveguide interference suppression method including: obtaining channel parameters of a wireless communication network where a disturbed base station is located, wherein the wireless communication network comprises a plurality of base stations, and the channel parameters comprise: environmental parameters, communication parameters; determining a first atmospheric waveguide ray track 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 track; determining a propagation delay interval from a interfered base station to any one scrambling base station in a wireless communication network based on the first single-hop distance interval and a preset light speed value, and determining the average propagation delay of the interfered base station based on the propagation delay interval; and determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting atmospheric waveguide interference according to the target time sequence gap proportioning result.
Optionally, obtaining the channel parameters of the wireless communication network where the interfered base station is located includes: acquiring an environment parameter of a disturbed base station, wherein the environment parameter comprises at least one of the following: earth radius, polyline factor, waveguide strength, waveguide height; acquiring communication parameters of a signal received by a disturbed base station in a wireless communication network, wherein the communication parameters comprise at least one of the following: a first latitude and longitude coordinate, a transmit antenna height, a receive antenna height, a first number of base stations within a wireless communication network.
Optionally, determining the first atmospheric waveguide ray trace according to the channel parameter includes: generating a simulated ray track in the atmosphere waveguide environment by adopting a double-fold line model; acquiring position coordinates of any two points on the simulated ray track, and determining the variation of the simulated ray track according to the position coordinates of any two points, wherein the position coordinates comprise: a horizontal distance, a vertical height, a first angle of a ray track direction and a horizontal direction; the first atmospheric waveguide ray trace is determined based on the simulated ray trace variation and the environmental parameter.
Optionally, determining the first atmospheric waveguide ray trace based on the simulated ray trace variation and the environmental parameter includes: determining a second atmospheric waveguide ray track under a three-dimensional coordinate system by adopting an Eikonal equation and an Snell criterion according to the simulated ray track variation and the environmental parameters; and converting the second atmospheric waveguide ray track in the three-dimensional coordinate system into the first atmospheric waveguide ray track in the two-dimensional coordinate system.
Optionally, calculating a first single hop distance interval of the disturbed base station according to the first atmospheric waveguide ray track includes: obtaining a trapping angle interval of the disturbed base station according to the first atmospheric waveguide ray track, wherein the trapping angle interval is used for reflecting an angle range between a maximum vertical angle and a minimum vertical angle of a signal transmitted by the disturbed base station; and determining a first single-hop distance interval of the disturbed base station according to the first atmospheric waveguide ray track and the trapping angle interval under the 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.
Optionally, calculating a propagation delay interval of the interfered base station transmitted to any one of the interfering base stations in the wireless communication network based on the first single-hop distance interval and a preset light speed value includes: 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 a propagation delay interval of the interfered base station transmitted to any one interference base station in the wireless communication network based on the second single-hop distance interval and the light speed value.
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, including: acquiring second longitude and latitude coordinates of any scrambling base station in the wireless communication network, and determining a second angle from the scrambling base station to the scrambling base station based on the first longitude and latitude coordinates and the second longitude and latitude coordinates; determining an atmospheric waveguide interference distance from a disturbed base station to any one disturbing base station in the wireless communication network according to the second angle and the earth radius, and determining a frequency interval of ray jumping times from the disturbed base station to the disturbed base station according to the atmospheric waveguide interference distance and the first single-hop distance interval, wherein the frequency interval of the ray jumping times is determined by a maximum jumping time and a minimum jumping time; respectively calculating the height difference and the height sum of the transmitting antenna height and the receiving antenna height of the disturbed base station; determining a second minimum single-hop distance from the square value of the atmospheric waveguide interference distance, the square value of the product of the minimum hop count and the height difference, and determining a second maximum single-hop distance from the square value of the atmospheric waveguide interference distance, the square value of the product of the maximum hop count and the height sum; and determining a second single-hop distance interval according to the second maximum single-hop distance and the second minimum single-hop distance.
According to another aspect of the embodiment of the present application, there is also provided an atmospheric waveguide interference suppression device, including: the acquisition module is used for acquiring channel parameters of a wireless communication network where the interfered base station is located, wherein the wireless communication network comprises a plurality of base stations, and the channel parameters comprise: environmental parameters, communication parameters; the first determining module is used for determining a first atmospheric waveguide ray track 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 track; the second determining module is used for determining a propagation delay interval from the interfered base station to any one interference base station in the wireless communication network based on the first single-hop distance interval and a preset light speed value, and determining the average propagation delay of the interfered base station based on the propagation delay interval; and the third determining module is used for determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting atmospheric waveguide interference according to the target time sequence gap proportioning result.
According to another aspect of the embodiment of the present application, there is also provided a nonvolatile storage medium including a stored program, where a device in which the nonvolatile storage medium is located executes the above-described method for suppressing atmospheric waveguide interference by running the program.
According to another aspect of the embodiment of the present application, there is also provided an electronic device including: the device comprises a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the atmospheric waveguide interference suppression method through the computer program.
In the embodiment of the application, the channel parameters of the wireless communication network where the interfered base station is located are obtained, wherein the wireless communication network comprises a plurality of base stations, and the channel parameters comprise: environmental parameters, communication parameters; determining a first atmospheric waveguide ray track 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 track; determining a propagation delay interval from a interfered base station to any one scrambling base station in a wireless communication network based on the first single-hop distance interval and a preset light speed value, and determining the average propagation delay of the interfered base station based on the propagation delay interval; and determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting atmospheric waveguide interference according to the target time sequence gap proportioning result.
In the process, the radiation track in the atmospheric waveguide is calculated by setting the environment parameters and the system parameters, the propagation delay interval from the interfered base station to any one of the interfered base stations of the wireless communication network is determined according to the atmospheric waveguide radiation track, and the average propagation delay of the interfered base station is calculated according to the propagation delay interval, so that the special time slot proportioning result is determined according to the average propagation delay of the interfered base station, the early warning is carried out before the atmospheric waveguide interference is generated, the transmission of the large network problem is prevented, and the technical problem that the atmospheric waveguide interference cannot be predicted under the condition of unknown accurate propagation delay in the related technology is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of an alternative communication system architecture according to an embodiment of the present application;
FIG. 2 is a flow chart of an alternative atmospheric waveguide interference suppression method according to an embodiment of the present application;
FIG. 3 is a schematic illustration of a simulated ray trace in an alternative air waveguide environment in accordance with an embodiment of the present application;
FIG. 4 is a schematic illustration of an alternative atmospheric waveguide ray propagation in accordance with an embodiment of the present application;
FIG. 5 is a graph showing the index contrast before and after adjusting the timing gap ratio according to an embodiment of the present application;
FIG. 6 is a schematic diagram of an alternative atmospheric waveguide interference suppression device in accordance with an embodiment of the present application
Fig. 7 is a schematic structural diagram of an alternative electronic device according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In addition, the related information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for presentation, analyzed data, etc.) related to the present application are information and data authorized by the user or sufficiently authorized by each party. For example, an interface is provided between the system and the relevant user or institution, before acquiring the relevant information, the system needs to send an acquisition request to the user or institution through the interface, and acquire the relevant information after receiving the consent information fed back by the user or institution.
Example 1
According to the present application, an atmospheric waveguide interference suppression method is provided in an embodiment, and specific execution steps of the method will be described in detail below. It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
Fig. 1 is a schematic architecture diagram of an alternative communication system according to an embodiment of the present application, the communication system comprising: base station 10 (may be considered as Shi Rao base station), base station 20 (may be considered as a victim base station), terminal 30, terminal 40. In addition, the communication system comprises a computer device 50, wherein the computer device 50 is connected to the base station 10 and/or the base station 20 by wire/wireless.
The base station 10 transmits a downlink wireless signal to the terminal 30 accessing the base station 10. The base station 10 transmits the downlink radio signal to the base station 20 due to the presence of the atmospheric waveguide. And the terminal 40 accessing the base station 20 transmits an uplink radio signal to the base station 20. When receiving the uplink radio signal transmitted from the terminal 40, the base station 20 receives the downlink radio signal transmitted from the base station 10. Accordingly, the downlink radio signal of the base station 10 causes interference to the uplink radio signal of the base station 20, that is, atmospheric waveguide interference.
The above terminal 30 and terminal 40 may be: user Equipment (UE), access terminal, terminal unit, terminal station, mobile station, remote terminal, mobile device, wireless communication device, vehicle User Equipment, terminal agent, or terminal device, etc. Alternatively, the terminal may be a handheld device, an in-vehicle device, a wearable device, or a computer with a communication function, which is not limited in any way in the embodiment of the present application. For example, the handheld device may be a smart phone. The in-vehicle device may be an in-vehicle navigation system. The wearable device may be a smart bracelet.
It should be noted that, computer equipment, a server, a gateway, a base station, a core network element, etc. may all be used as execution bodies of the technical scheme of the present application. The technical scheme provided by the embodiment of the application is described below by taking computer equipment as an example.
Fig. 2 is a flow chart of an alternative method for suppressing atmospheric waveguide interference according to an embodiment of the present application, as shown in fig. 2, the method at least includes steps S202-S208, wherein:
step S202, obtaining channel parameters of a wireless communication network where a interfered base station is located, wherein the wireless communication network comprises a plurality of base stations, and the channel parameters comprise: environmental parameters, communication parameters.
Specifically, the computer device obtains a current environmental parameter and a current communication parameter of a wireless communication network where the interfered base station is located.
Optionally, acquiring an environmental parameter of the interfered base station, where the environmental parameter includes at least one of the following: earth radius, polyline factor, waveguide strength, waveguide height; acquiring communication parameters of a signal received by a disturbed base station in a wireless communication network, wherein the communication parameters comprise at least one of the following: a first latitude and longitude coordinate, a transmit antenna height, a receive antenna height, a first number of base stations within a wireless communication network.
Wherein the earth radius in the above environmental parameters 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 A representation; the first longitude and latitude coordinates of the interfered base station in the communication parameters may be gnb 1= (Lon 1 ,Lat 1 ) The height of the transmitting antenna can be expressed by h t The height of the receiving antenna can be expressed by h r The first number of base stations within the representation, wireless communication network, may be denoted by n.
Step S204, determining a first atmospheric waveguide ray track 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 track.
The computer equipment simulates a ray track in the atmosphere waveguide environment according to the earth radius, then determines a first atmosphere waveguide ray track according to the channel parameter, and determines a first single-hop distance interval of the disturbed base station on the basis of the first atmosphere waveguide ray track.
As an alternative embodiment, the first atmospheric waveguide ray trace may be determined by the following steps S2041-S2043:
step S2041, generating a simulated ray track in the atmosphere waveguide environment by adopting a double-fold line model;
step S2042, obtaining position coordinates of any two points on the simulated ray track, and determining the variation of the simulated ray track according to the position coordinates of any two points, wherein the position coordinates comprise: a horizontal distance, a vertical height, a first angle of a ray track direction and a horizontal direction;
step S2043, determining a first atmospheric waveguide ray trace based on the simulated ray trace variation and the environmental parameter.
In the technical scheme provided in step S2043, the second atmospheric waveguide ray track under the three-dimensional coordinate system may also be determined by adopting the Eikonal equation and the Snell criterion according to the simulated ray track variation and the environmental parameter; and converting the second atmospheric waveguide ray track in the three-dimensional coordinate system into the first atmospheric waveguide ray track in the two-dimensional coordinate system.
Specifically, the Eikonal equation is a partial differential equation describing the propagation speed and direction of a wavefront, which is generally used to describe the propagation of a wave phenomenon in the fields of optics, acoustics, and the like; while the Snell criterion refers to the existence of a relationship between the angle of incidence and angle of refraction at the boundary between media. Therefore, in the embodiment of the application, the Eikonal equation is solved by using the Snell criterion to determine the refraction angle of the waveguide ray track between different mediums, so as to obtain the path of the waveguide signal propagating in the earth atmosphere, and meanwhile, the shape of the earth is considered to influence the waveguide ray track, so that the radius of the earth is also required to be included in the atmospheric waveguide ray track, and the precision and reliability of the model design track are improved.
Specifically, FIG. 3 is a schematic diagram of a simulated ray trace in an alternative air waveguide environment according to an embodiment of the present application, as shown in FIG. 3, (a) segment represents a real change in sea level refractive index, (b) segment represents an approximate change in sea level refractive index, and (c) segment represents a tableA simulated ray trace in an atmospheric waveguide environment generated using a double polyline model is shown. Determining the point A (x) at any two different locations by ray tracing over the (c) line segment 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, θ represents the angle between the ray direction and the horizontal direction. So that it can pass through point a (x A ,z A ,θ A ) And point B (x) B ,z B ,θ B ) Determining an analog ray trajectory variation Δx=x B -x A 、Δz＝z B -z A And Δθ=θ B -θ A 。
Then, using Eikonal equation and Snell criterion, and combining the spherical shape of the earth, obtaining a second atmospheric waveguide ray track under a three-dimensional coordinate system, wherein the expression can be written as:
R·n(z)cosθ＝(R+Δz)n(z+Δz)cos(θ+Δθ)
with the simulated ray trajectories shown in FIG. 3, it is not difficult to deriveBringing this into the above formula, the following expression can be obtained:
wherein, the liquid crystal display device comprises a liquid crystal display device,
then, cos (θ+Δθ) in the above formula is expanded according to a trigonometric function induction formula, resulting in the following expression:
since Δz and Δθ both belong to fractional values, cos (Δθ) ≡1, sin (Δθ) ≡Δθ, the above expression can be written as:
wherein Δz 2 ＝Δθ 2 =Δz×Δθ=0, and therefore, the above formula can also be written as:
since R.n (z) cos θ is present at both ends of the above formula, R.n (z) cos θ can be reduced to obtain
Moving Rn (z) sin (θ) Δθ to the right to obtainThen dividing the two sides of the expression by RΔzn (z) cos (theta) to obtain the following expression:
since the value of n (z) has a small variation range and K is a constant value, the method can Brought to the upper position to obtain->Wherein, when Deltax tends to zero, +.>Therefore, the second atmospheric waveguide ray trace can be reduced to:
finally, the expression of the second atmospheric waveguide ray trace is further written in the form of z "=k, and therefore, the second atmospheric waveguide ray trace may be integrated twice to be converted into the two-dimensional coordinate system (x, z) to obtain the expression of the first atmospheric waveguide ray trace. Wherein, can carry on the integral once, get: z' =kx+θ t And then carrying out secondary integration to obtain the following components:an expression of the first atmospheric waveguide ray trace is obtained. Wherein, the above-mentioned theta t Representing the vertical angle at which the victim base station transmits a signal.
Further, after obtaining the first atmospheric waveguide ray track, the computer device may further obtain a trapping angle interval of the disturbed base station according to the first atmospheric waveguide ray track, where the trapping angle interval is used to reflect an angle interval between a maximum vertical angle and a minimum vertical angle of a signal transmitted by the disturbed base station; determining a first single-hop distance interval of the disturbed base station according to a first atmospheric waveguide ray track and a trapping angle interval under a two-dimensional coordinate system, wherein the first single-hop distance interval comprises: a first maximum single hop distance, a first minimum single hop distance.
Specifically, the obtaining the trapping angle interval of the disturbed base station according to the first atmospheric waveguide ray track and the following deduction process includes:
first according to the first atmosphere waveguide ray trackThe expression for waveguide height is obtained:
then, the above expression is simplified to obtain the following expression:
then, θ can be obtained by the above expression t 2 Is represented by the expression:
θ t 2 ＝2K(h t -h e )
finally to theta t 2 Performing open squares can yield an expression for the trapping angle interval:
wherein, the liquid crystal display device comprises a liquid crystal display device,for representing the maximum vertical angle, +.>For representing a minimum vertical angle.
According to the first atmosphere waveguide ray trackAnd a trapping angle intervalDetermining a first single-hop distance interval d of a interfered base station, wherein the expression is as follows:
wherein the expression of the first maximum single-hop distance isThe first minimum single hop distance has the expression +.>
Step S206, a propagation delay interval from the interfered base station to any one of the interfered base stations in the wireless communication network is determined based on the first single-hop distance interval and a preset light speed value, and an average propagation delay of the interfered base station is determined based on the propagation delay interval.
Because the single-hop distance of the interfered base station is generally longer, the computer device may further simplify the first single-hop distance interval d to a form of calculating a hypotenuse of a right triangle (i.e. a pythagorean theorem form), and calculate the propagation delay interval based on the second single-hop distance interval.
As an optional implementation manner, 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, where the second single-hop distance interval includes: a second maximum single hop distance and a second minimum single hop distance; and calculating a propagation delay interval of the interfered base station transmitted to any one interference base station in the wireless communication network based on the second single-hop distance interval and the light speed value.
Alternatively, the second single hop distance interval may be obtained according to the following steps S2061-S2064, including:
step S2061, a second longitude and latitude coordinate of any scrambling base station in the wireless communication network is obtained, and a second angle from the scrambling base station to the scrambling base station is determined based on the first longitude and latitude coordinate and the second longitude and latitude coordinate;
step S2062, determining the atmospheric waveguide interference distance from the interfered base station to any one interference base station in the wireless communication network according to the second angle and the earth radius, and determining the frequency interval of the ray jumping times from the interfered base station to the interference base station according to the atmospheric waveguide interference distance and the first single-hop distance interval, wherein the frequency interval of the ray jumping times is determined by the maximum jumping times and the minimum jumping times;
Step S2063, respectively calculating the height difference and the height sum of the transmitting antenna height and the receiving antenna height of the interfered base station;
step S2064, determining a second minimum single-hop distance from the square value of the atmospheric waveguide interference distance, the square value of the product of the minimum hop count and the height difference, and determining a second maximum single-hop distance from the square value of the atmospheric waveguide interference distance, the square value of the product of the maximum hop count and the height sum;
step S2065, determining a second single-hop distance interval according to the second maximum single-hop distance and the second minimum single-hop distance.
Specifically, first, the second longitude and latitude coordinates gnb2 = (Lon) of any scrambling base station in the wireless communication network are obtained 2 ,Lat 2 ) And according to the first longitude and latitude coordinates gnb 1= (Lon 1 ,Lat 1 ) And a second longitude and latitude coordinate gnb2 = (Lon 2 ,Lat 2 ) Determining a second angle from the interfered base station to the scrambling base station, wherein the expression of the second angle is as follows:
then, determining the atmospheric waveguide interference distance d from the interfered base station to any one of the interfering base stations in the wireless communication network according to the second Angle and the earth radius R gnb1-gnb2 The expression is:
FIG. 4 is a schematic illustration of an alternative atmospheric waveguide ray propagation according to an embodiment of the present application, as shown in FIG. 4, involving multiple ray hops during atmospheric waveguide propagation, and thus, may be based on atmospheric waveguide interference distance d gnb1-gnb2 And calculating the frequency interval n of ray jump frequency from the interfered base station to the scrambling base station by the first maximum single-hop distance and the first minimum single-hop distance in the first single-hop distance interval 0 The expression can be written as:
n 0 ＝[d gnb1-gnb2 /d max ,d gnb1-gnb2 /d min ]
wherein the expression of the maximum jump number is n 0max ＝d gnb1-gnb2 /d min Minimum number of hopsThe expression of (2) is n 0min ＝d gnb1-gnb2 /d max 。
Then, the height difference h between the transmitting antenna height and the receiving antenna height of the interfered base station is calculated t -h r And height and h t +h r 。
Finally, the square value d of the interference distance is calculated by the atmosphere waveguide gnbA-gnbB 2 Square value of product of minimum jump number and height difference [ n ] 0min (h t -h r )] 2 Determining a second minimum single hop distanceAnd is derived from the square value d of the atmospheric waveguide interference distance gnbA-gnbB 2 Square value of product of maximum number of hops and height sum [ n ] 0max (h t +h r )] 2 Determining a second maximum single hop distance +.>Thus, the second single hop range bin of the victim base station can be written as:
furthermore, the propagation delay interval t of the interfered base station transmitted to any one scrambling base station in the wireless communication network is calculated based on the second single-hop distance interval d and the light speed value e, so that the expression of the propagation delay interval t can be written as: t=d/e, where the speed of light e typically takes e=3×10 8 m/s。
Through the calculation process, the propagation delay interval from the interfered base station to N interfered 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.
Step S208, determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting the atmospheric waveguide interference according to the target time sequence gap proportioning result.
As an alternative implementation manner, an alternative timing gap proportioning table is provided in the embodiment of the present application, as shown in table 1.
TABLE 1
The average propagation delay is determined to belong to a delay interval through the table, so that a target time sequence gap proportioning result corresponding to the delay interval is determined, and atmospheric waveguide interference is restrained according to the target time sequence gap proportioning result, so that the average propagation delay matching and proper time slot proportioning with a interfered base station can be determined without acquiring the receiving and transmitting delays of the interfered base station and the interfered base station through additional equipment, and meanwhile, interference detection is carried out on the interfered base station by utilizing a synchronous signal sent by the interfered base station without adopting point-to-point test.
For example, when the earth radius r=6370 km, the refractive factor n= 1.00035, the waveguide strength Δm=40, the waveguide height h in the environmental parameters e =40m; number of base stations n= 13369, longitude and latitude (Lon, lat) of base stations, height h of transmitting antenna in communication parameters t Reception antenna height h=30m r Light speed e=3×10 =10m 8 In m/s, the average propagation delay of the interfered base station can be calculated according to the method to be 0.00010514s, so that the special time slot ratio of 9:3:2 can be determined according to the time sequence ratio table, the index after the time slot ratio adjustment is improved, as shown in fig. 5, it is easy to see that the wireless access success rate of SA (stand alone networking) and the context disconnection rate of UE are obviously improved.
Based on the above-mentioned schemes defined in step S202 to step S208, it may be known that, in an embodiment, a channel parameter of a wireless communication network where a victim base station is located is obtained, where the wireless communication network includes a plurality of base stations, and the channel parameter includes: environmental parameters, communication parameters; determining a first atmospheric waveguide ray track 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 track; determining a propagation delay interval from a interfered base station to any one scrambling base station in a wireless communication network based on the first single-hop distance interval and a preset light speed value, and determining the average propagation delay of the interfered base station based on the propagation delay interval; and determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting atmospheric waveguide interference according to the target time sequence gap proportioning result.
Therefore, according to the technical scheme of the embodiment of the application, from the aspect of physical composition, the jump reflection of rays propagating in the atmospheric waveguide layer for a plurality of times is accurately described, and the receiving and transmitting distances of the emergent rays are accurately calculated, so that the channel propagation time delays of different rays are obtained; meanwhile, the scheme of the application can determine the average propagation delay of the interfered base station without additional equipment to obtain the transceiving delay of the interfered base station and the interfered base station, and the method is matched with the proper special time slot ratio, thereby achieving the aim of reducing synergy and further solving the technical problem that the related technology cannot predict the atmospheric waveguide interference under the condition of unknown accurate propagation delay.
Example 2
Based on embodiment 1 of the present application, there is also provided an embodiment of an atmospheric waveguide interference suppression device that performs the above-described atmospheric waveguide interference suppression method of the above-described embodiment when operating. Fig. 6 is a schematic structural diagram of an alternative atmospheric waveguide interference suppression device according to an embodiment of the present application, where, as shown in fig. 6, the atmospheric waveguide interference suppression device includes at least an obtaining module 61, a first determining module 63, a second determining module 65, and a third determining module 67, where:
The obtaining module 61 is configured to obtain channel parameters of a wireless communication network where the interfered base station is located, where the wireless communication network includes a plurality of base stations, and the channel parameters include: environmental parameters, communication parameters.
Specifically, the acquiring module 61 acquires the current environmental parameter and the current communication parameter of the wireless communication network where the interfered base station is located.
Optionally, the acquiring module 61 first acquires an environmental parameter in which the disturbed base station is located, where the environmental parameter includes at least one of the following: earth radius, polyline factor, waveguide strength, waveguide height; the obtaining module 61 obtains the communication parameters of the interfered base station for communication in the wireless communication network, wherein the communication parameters include at least one of the following: a first latitude and longitude coordinate, a transmit antenna height, a receive antenna height, a first number of base stations within a wireless communication network.
Wherein the earth radius in the above environmental parameters 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 A representation; the first longitude and latitude coordinates of the interfered base station in the communication parameters may be gnb 1= (Lon 1 ,Lat 1 ) The height of the transmitting antenna can be expressed by h t The height of the receiving antenna can be expressed by h r The first number of base stations within the representation, wireless communication network, may be denoted by n.
The first determining module 63 is configured to determine a first atmospheric waveguide ray track 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 track.
The first determining module 63 simulates a ray track in an atmospheric waveguide environment according to the earth radius, determines a first atmospheric waveguide ray track according to the channel parameter, and determines a first single-hop distance interval of the disturbed base station based on the first atmospheric waveguide ray track.
As an alternative embodiment, the first determining module 63 may determine the first atmospheric waveguide ray trace by: generating a simulated ray track in the atmosphere waveguide environment by adopting a double-fold line model according to the environmental parameters; acquiring position coordinates of any two points on the simulated ray track, and determining the variation of the simulated ray track according to the position coordinates of any two points, wherein the position coordinates comprise: a horizontal distance, a vertical height, a first angle of a ray track direction and a horizontal direction; the first atmospheric waveguide ray trace is determined based on the simulated ray trace variation and the environmental parameter.
Optionally, the first determining module 63 may further determine the second atmospheric waveguide ray track under the three-dimensional coordinate system according to the simulated ray track variation and the environmental parameter, and using the Eikonal equation and the Snell criterion; and converting the second atmospheric waveguide ray track in the three-dimensional coordinate system into the first atmospheric waveguide ray track in the two-dimensional coordinate system.
The second determining module 65 is configured to determine a propagation delay interval from the victim base station to any one of the victim base stations 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 victim base station based on the propagation delay interval.
Since the single-hop distance of the victim base station is generally longer, the second determining module 65 may further simplify the first single-hop distance interval d to a form of calculating the hypotenuse of the right triangle (i.e. a pythagorean theorem form), and calculate the propagation delay interval based on the second single-hop distance interval.
As an optional implementation manner, the second determining 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 a pythagorean theorem form to obtain a second single-hop distance interval, where the second single-hop distance interval includes: a second maximum single hop distance and a second minimum single hop distance; and calculating a propagation delay interval of the interfered base station transmitted to any one interference applying base station in the wireless communication network based on the second single-hop distance interval and the light speed value.
Alternatively, the second determining module 65 may obtain the second single hop distance interval according to the following method, including: acquiring second longitude and latitude coordinates of any scrambling base station in the wireless communication network, and determining a second angle from the scrambling base station to the scrambling base station based on the first longitude and latitude coordinates and the second longitude and latitude coordinates; determining an atmospheric waveguide interference distance from a disturbed base station to any one disturbing base station in the wireless communication network according to the second angle and the earth radius, and determining a frequency interval of ray jumping times from the disturbed base station to the disturbed base station according to the atmospheric waveguide interference distance and the first single-hop distance interval, wherein the frequency interval of the ray jumping times is determined by a maximum jumping time and a minimum jumping time; respectively calculating the height difference and the height sum of the transmitting antenna height and the receiving antenna height of the disturbed base station; determining a second minimum single-hop distance from the square value of the atmospheric waveguide interference distance, the square value of the product of the minimum hop count and the height difference, and determining a second maximum single-hop distance from the square value of the atmospheric waveguide interference distance, the square value of the product of the maximum hop count and the height sum; and determining a second single-hop distance interval according to the second maximum single-hop distance and the second minimum single-hop distance.
The third determining module 67 is configured to determine a target timing gap matching result corresponding to the average propagation delay according to a matching result of the average propagation delay and a preset timing gap matching table, and suppress atmospheric waveguide interference according to the target timing gap matching result.
In an embodiment, a channel parameter of a wireless communication network where a interfered base station is located is obtained, where the wireless communication network includes a plurality of base stations, and the channel parameter includes: environmental parameters, communication parameters; determining a first atmospheric waveguide ray track 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 track; determining a propagation delay interval from a interfered base station to any one scrambling base station in a wireless communication network based on the first single-hop distance interval and a preset light speed value, and determining the average propagation delay of the interfered base station based on the propagation delay interval; and determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting atmospheric waveguide interference according to the target time sequence gap proportioning result.
Therefore, according to the technical scheme of the embodiment of the application, from the aspect of physical composition, the jump reflection of rays propagating in the atmospheric waveguide layer for a plurality of times is accurately described, and the receiving and transmitting distances of the emergent rays are accurately calculated, so that the channel propagation time delays of different rays are obtained; meanwhile, the scheme of the application can determine the average propagation delay of the interfered base station without additional equipment to obtain the transceiving delay of the interfered base station and the interfered base station, and the method is matched with the proper special time slot ratio, thereby achieving the aim of reducing synergy and further solving the technical problem that the related technology cannot predict the atmospheric waveguide interference under the condition of unknown accurate propagation delay.
It should be noted that, each module in the atmospheric waveguide interference suppression device in the embodiment of the present application corresponds to each implementation step of the atmospheric waveguide interference suppression method in embodiment 1 one by one, and since detailed description has been made in embodiment 1, details that are not shown in this embodiment may refer to embodiment 1, and will not be described in detail here.
The respective modules in the above-described atmospheric waveguide interference suppression device may be program modules (for example, a set of program instructions for realizing a specific function), or may be hardware modules, and the latter may be expressed in the following form, but are not limited thereto: the expression forms of the modules are all a processor, or the functions of the modules are realized by one processor.
Example 3
According to an embodiment of the present application, there is also provided a nonvolatile storage medium having a program stored therein, wherein the apparatus in which the nonvolatile storage medium is controlled to execute the atmospheric waveguide interference suppression method in embodiment 1 when the program runs.
Optionally, the device where the nonvolatile storage medium is located performs the following steps by running the program:
Step S202, obtaining channel parameters of a wireless communication network where a interfered base station is located, wherein the wireless communication network comprises a plurality of base stations, and the channel parameters comprise: environmental parameters, communication parameters;
step S204, determining a first atmospheric waveguide ray track 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 track;
step S206, determining a propagation delay interval from the interfered base station to any one of the interfered base stations 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 interfered base station based on the propagation delay interval;
step S208, determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting the atmospheric waveguide interference according to the target time sequence gap proportioning result.
Example 4
According to an embodiment of the present application, there is also provided a processor for running a program, wherein the atmospheric waveguide interference suppression method in embodiment 1 is performed when the program is run.
Optionally, the program execution realizes the following steps:
step S202, obtaining channel parameters of a wireless communication network where a interfered base station is located, wherein the wireless communication network comprises a plurality of base stations, and the channel parameters comprise: environmental parameters, communication parameters;
Step S204, determining a first atmospheric waveguide ray track 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 track;
step S206, determining a propagation delay interval from the interfered base station to any one of the interfered base stations 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 interfered base station based on the propagation delay interval;
step S208, determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting the atmospheric waveguide interference according to the target time sequence gap proportioning result.
Example 5
There is further provided, in accordance with an embodiment of the present application, an electronic device, where fig. 7 is a schematic structural diagram of an alternative electronic device according to an embodiment of the present application, and as shown in fig. 7, the electronic device includes one or more processors; and a memory for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement a method for operating the program, wherein the program is configured to perform the atmospheric waveguide interference suppression method in embodiment 1 described above when operated.
Optionally, the processor is configured to implement the following steps by computer program execution:
step S202, obtaining channel parameters of a wireless communication network where a interfered base station is located, wherein the wireless communication network comprises a plurality of base stations, and the channel parameters comprise: environmental parameters, communication parameters;
step S204, determining a first atmospheric waveguide ray track 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 track;
step S206, determining a propagation delay interval from the interfered base station to any one of the interfered base stations 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 interfered base station based on the propagation delay interval;
step S208, determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting the atmospheric waveguide interference according to the target time sequence gap proportioning result.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of units may be a logic function division, and there may be another division manner in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be essentially or a part contributing to the related art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (10)
1. An atmospheric waveguide interference suppression method, comprising:
obtaining channel parameters of a wireless communication network where a disturbed base station is located, wherein the wireless communication network comprises a plurality of base stations, and the channel parameters comprise: environmental parameters, communication parameters;
determining a first atmospheric waveguide ray track 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 track;
determining a propagation delay interval from the interfered base station to any one scrambling base station in the wireless communication network based on the first single-hop distance interval and a preset light speed value, and determining the average propagation delay of the interfered base station based on the propagation delay interval;
and determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting atmospheric waveguide interference according to the target time sequence gap proportioning result.
2. The method of claim 1, wherein obtaining channel parameters of a wireless communication network in which the victim base station is located comprises:
acquiring the environment parameters of the disturbed base station, wherein the environment parameters comprise at least one of the following: earth radius, polyline factor, waveguide strength, waveguide height;
Acquiring the communication parameters of the interfered base station for receiving signals in the wireless communication network, wherein the communication parameters comprise at least one of the following: a first longitude and latitude coordinate, a transmit antenna height, a receive antenna height, a first number of base stations within the wireless communication network.
3. The method of claim 2, wherein determining a first atmospheric waveguide ray trace from the channel parameters comprises:
generating a simulated ray track in the atmosphere waveguide environment by adopting a double-fold line model;
acquiring position coordinates of any two points on the simulated ray track, and determining the variation of the simulated ray track according to the position coordinates of any two points, wherein the position coordinates comprise: a horizontal distance, a vertical height, a first angle of a ray track direction and a horizontal direction;
the first atmospheric waveguide ray trace is determined based on the simulated ray trace variation and the environmental parameter.
4. The method of claim 3, wherein determining the first atmospheric waveguide ray trace based on the simulated ray trace variation and the environmental parameter comprises:
determining a second atmospheric waveguide ray track under a three-dimensional coordinate system by adopting an Eikonal equation and an Snell criterion according to the simulated ray track variation and the environmental parameter;
And converting the second atmospheric waveguide ray track in the three-dimensional coordinate system into the first atmospheric waveguide ray track in the two-dimensional coordinate system.
5. The method of claim 2, wherein calculating a first single hop distance interval for the victim base station from the first atmospheric waveguide ray trajectory comprises:
obtaining a trapping angle interval of the disturbed base station according to the first atmospheric waveguide ray track, wherein the trapping angle interval is used for reflecting an angle range between a maximum vertical angle and a minimum vertical angle of a signal transmitted by the disturbed base station;
and determining a first single-hop distance interval of the disturbed base station according to the first atmospheric waveguide ray track and the trapping angle interval under 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 of claim 5, wherein calculating a propagation delay interval for the victim base station to transmit to any one of the offending base stations within the wireless communication network based on the first single hop distance interval and a preset speed of light value comprises:
converting the first maximum single-hop distance and the first minimum single-hop distance of the first single-hop distance interval into Pythagorean theorem forms to obtain a second single-hop distance interval, wherein the second single-hop distance is determined by a second maximum single-hop distance and a second minimum single-hop distance;
And calculating a propagation delay interval of the disturbed base station transmitted to any one Shi Rao base station in the wireless communication network based on the second single-hop distance interval and the light speed value.
7. The method of claim 6, wherein 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, obtaining a second single-hop distance interval, comprises:
acquiring second longitude and latitude coordinates of any one Shi Raoji station in the wireless communication network, and determining a second angle from the interfered base station to the Shi Raoji station based on the first longitude and latitude coordinates and the second longitude and latitude coordinates;
determining an atmospheric waveguide interference distance from the interfered base station to any one Shi Rao base station in the wireless communication network according to the second angle and the earth radius, and determining a frequency interval of ray hopping times from the interfered base station to the Shi Rao base station according to the atmospheric waveguide interference distance and the first single-hop distance interval, wherein the frequency interval of the ray hopping times is determined by a maximum hopping time and a minimum hopping time;
Respectively calculating the height difference and the height sum of the transmitting antenna height and the receiving antenna height of the disturbed base station;
determining the second minimum single-hop distance from the square value of the atmospheric waveguide interference distance, the square value of the product of the minimum hop number and the height difference, and determining the second maximum single-hop distance from the square value of the atmospheric waveguide interference distance, the square value of the product of the maximum hop number and the height sum;
and determining the second single-hop distance interval according to the second maximum single-hop distance and the second minimum single-hop distance.
8. An atmospheric waveguide interference suppression device, comprising:
the acquisition module is used for acquiring channel parameters of a wireless communication network where a disturbed base station is located, wherein the wireless communication network comprises a plurality of base stations, and the channel parameters comprise: environmental parameters, communication parameters;
the first determining module is used for determining a first atmospheric waveguide ray track 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 track;
the second determining module is used for determining a propagation delay interval from the interfered base station to any one scrambling base station in the wireless communication network based on the first single-hop distance interval and a preset light speed value, and determining the average propagation delay of the interfered base station based on the propagation delay interval;
And the third determining module is used for determining a target time sequence gap proportioning result corresponding to the average propagation delay according to the matching result of the average propagation delay and a preset time sequence gap proportioning table, and inhibiting atmospheric waveguide interference according to the target time sequence gap proportioning result.
9. A nonvolatile storage medium, characterized in that the nonvolatile storage medium includes a stored program, wherein a device in which the nonvolatile storage medium is located executes the atmospheric waveguide interference suppression method according to any one of claims 1 to 7 by running the program.
10. An electronic device, comprising: a memory and a processor, wherein the memory stores a computer program, the processor being configured to execute the atmospheric waveguide interference suppression method of any one of claims 1 to 7 by the computer program.
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