CN117675053A

CN117675053A - Method and device for determining interference between communication systems

Info

Publication number: CN117675053A
Application number: CN202211065453.3A
Authority: CN
Inventors: 王婷婷; 周瑶; 李福昌
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2024-03-08

Abstract

The application discloses a method and a device for determining interference between communication systems, which relate to the technical field of communication and are used for accurately analyzing the interference condition between the communication systems. The specific implementation scheme is as follows: and constructing an antenna azimuth graph of the first communication system according to a preset simulation system, wherein the antenna azimuth graph comprises a main lobe and a plurality of side lobes, and curves corresponding to the main lobe and the side lobes comprise a plurality of antenna gain values. Based on the least square method, an antenna gain peak value curve is fitted according to the vertex coordinate data of the curve corresponding to the main lobe and the vertex coordinate data of the curve corresponding to each of the plurality of side lobes, and the fitted antenna gain peak value curve is used for reflecting the interference condition of the second communication system on the first communication system, so that the interference between the systems can be accurately analyzed.

Description

Method and device for determining interference between communication systems

Technical Field

The embodiments of the present application relate to the field of communications technologies, and in particular, to a method and an apparatus for determining interference between communication systems.

Background

Before a new communication system or service is entered into an application, it is necessary to analyze coexistence situations of the new communication system/service and an existing communication system/service (e.g., analysis of situations of mutual interference). For example, to reduce interference from a new communication system to an existing system, a communication carrier may typically isolate the new system from the existing system by means of interference isolation measures (e.g., a zoomed-out topology), and evaluate the interference between the new system and the existing system based on different zoomed-out distances of the two.

In general, the interference between communication systems can be analyzed based on the antenna pattern. The antenna gain of the antenna azimuth graph in each direction has many concave points, and the existence of the concave points of the antenna gain leads to the failure to accurately analyze the interference situation among communication systems.

Disclosure of Invention

The application provides a method and a device for determining interference among communication systems, which are used for accurately analyzing the interference among the communication systems.

In order to achieve the above purpose, the present application adopts the following technical scheme:

in a first aspect, a method for determining interference between communication systems is provided, the method comprising: according to a preset simulation system, an antenna azimuth diagram of a first communication system is constructed, wherein the antenna azimuth diagram comprises a main lobe and a plurality of side lobes, a curve corresponding to the main lobe comprises a plurality of antenna gain values, and a curve corresponding to the side lobes comprises a plurality of antenna gain values; and fitting an antenna gain peak value curve according to the vertex coordinate data of the curve corresponding to the main lobe and the vertex coordinate data of the curve corresponding to each of the plurality of side lobes, wherein the antenna gain peak value curve is used for reflecting the interference condition of the second communication system on the first communication system, and comprises antenna gain values of the first communication system under different angles.

With reference to the first aspect, in one possible implementation manner, an antenna gain peak curve is fitted according to vertex coordinate data of a curve corresponding to a main lobe and vertex coordinate data of curves corresponding to a plurality of side lobes, and a function expression corresponding to the antenna gain peak curve is determined according to the vertex coordinate data of the curve corresponding to the main lobe and the vertex coordinate data of the curves corresponding to the side lobes based on a least square method; and fitting an antenna gain peak curve according to the functional expression.

In a possible implementation manner, the method further includes: determining an interference power of each cell of the plurality of cells of the second communication system to the first communication system;

and calculating the interference value of the second communication system to the first communication system according to the interference power of each cell of the second communication system to the first communication system and the number of cells of the second communication system.

In a possible implementation manner, the method further includes: determining, for any one of a plurality of cells of the second communication system, an interference power of each of the plurality of cells of the second communication system to the first communication system, comprising:

the signal transmit power of the cell, the antenna gain of the cell directed to the first communication system, the signal propagation loss between the second communication system and the first communication system, and the antenna gain of the first communication system are determined.

And determining the interference power of the cell to the first communication system according to the signal transmitting power of the cell, the antenna gain of the cell pointing to the first communication system, the signal propagation loss between the second communication system and the first communication system and the antenna gain of the first communication system, wherein the antenna gain of the first communication system is the antenna gain corresponding to any angle on an antenna gain peak curve.

In a second aspect, a device for determining interference between communication systems is provided, which may be a functional unit for implementing the first aspect or any of the possible design methods of the first aspect. The apparatus may implement the above aspects or functions performed in each possible design, and the functions may be implemented by hardware executing corresponding software. The hardware or software includes one or more functionally corresponding elements. Such as: the device comprises a construction unit and a processing unit.

The building unit is used for building an antenna azimuth graph of the first communication system according to a preset simulation system, wherein the antenna azimuth graph comprises a main lobe and a plurality of side lobes, a curve corresponding to the main lobe comprises a plurality of antenna gain values, and a curve corresponding to the side lobes comprises a plurality of antenna gain values;

the processing unit is used for fitting an antenna gain peak value curve according to the vertex coordinate data of the curve corresponding to the main lobe and the vertex coordinate data of the curve corresponding to each of the plurality of side lobes, wherein the antenna gain peak value curve is used for reflecting the interference condition of the second communication system on the first communication system, and the antenna gain peak value curve comprises antenna gain values of the first communication system under different angles.

In a possible implementation manner, the processing unit is specifically configured to: based on a least square method, determining a function expression corresponding to the antenna gain peak curve according to vertex coordinate data of a curve corresponding to the main lobe and vertex coordinate data of curves corresponding to the side lobes, and fitting the antenna gain peak curve according to the function expression.

In a possible implementation manner, the apparatus further includes a determining unit, where the determining unit is configured to: an interference power of each of a plurality of cells of the second communication system to the first communication system is determined. And calculating the interference value of the second communication system to the first communication system according to the interference power of each cell of the second communication system to the first communication system and the number of cells of the second communication system.

In a possible implementation manner, for any one of a plurality of cells of the second communication system, the determining unit is configured to determine an interference power of each cell of the plurality of cells of the second communication system to the first communication system, specifically: the signal transmit power of the cell, the antenna gain of the cell directed to the first communication system, the signal propagation loss between the second communication system and the first communication system, and the antenna gain of the first communication system are determined. And determining the interference power of the cell to the first communication system according to the signal transmitting power of the cell, the antenna gain of the cell pointing to the first communication system, the signal propagation loss between the second communication system and the first communication system and the antenna gain of the first communication system, wherein the antenna gain of the first communication system is the antenna gain corresponding to any angle on an antenna gain peak curve.

In particular, the implementation manner of the apparatus may refer to the behavior function of the method for determining inter-communication system interference provided by the first aspect or any possible design of the first aspect, which is not repeated herein. The inter-communication system interference determining means may thus achieve the same advantages as the first aspect or any of the possible designs of the first aspect.

In a third aspect, an apparatus for determining interference between communication systems is provided. The apparatus may implement the functions performed in the aspects or in the possible designs described above, which may be implemented by hardware, such as: in one possible design, the apparatus may include: a processor and a communication interface, the processor being operable to support the apparatus to carry out the functions referred to in the first aspect or any one of the possible designs of the first aspect.

In yet another possible design, the apparatus may further include a memory for holding computer-executable instructions and data necessary for the apparatus. The processor, when the apparatus is running, executes the computer-executable instructions stored by the memory to cause the apparatus to perform the method of determining inter-communication system interference as described above or any of the possible concerns of the first aspect.

In a fourth aspect, a computer readable storage medium is provided, which may be a readable non-volatile storage medium, storing computer instructions or a program which, when run on a computer, cause the computer to perform the above-mentioned first aspect or any one of the above aspects of the possible related inter-communication system interference determination method.

In a fifth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of determining inter-communication system interference of the first aspect or any of the aspects described above as possible.

In a sixth aspect, a system on chip is provided, the system on chip comprising a processor and a communication interface, the system on chip being operable to perform the functions performed by any one of the above-mentioned first aspects or any one of the possible determining means of the first aspect, e.g. the processor being operable to determine the signal strength of a first downlink signal received by a target terminal. In one possible design, the chip system further includes a memory for holding program instructions and/or data. The chip system may be composed of a chip, or may include a chip and other discrete devices, without limitation.

The technical effects of any one of the design manners of the second aspect to the sixth aspect may be referred to the technical effects of the first aspect, and will not be described herein.

Drawings

Fig. 1 is an antenna azimuth chart provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an apparatus 300 for determining interference between communication systems according to an embodiment of the present application;

fig. 4 is a flow chart of a method for determining interference between communication systems according to an embodiment of the present application;

fig. 5 is a schematic diagram of a fitted antenna gain peak curve according to an embodiment of the present application;

fig. 6 is a flowchart of another method for determining interference between communication systems according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an inter-communication system interference determining apparatus 70 according to an embodiment of the present application.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

It should be noted that the terms "first," "second," and the like in the description and 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 disclosure described herein may be capable of operation in sequences other than those illustrated or described herein. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of embodiments of the present application as detailed in the accompanying claims.

It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, and/or components.

The active antenna system (active antenna systems, AAS) has the advantages of large antenna array, small antenna size, reduced power consumption, easy combination of beamforming and large-scale multiple-input multiple-output (MIMO) technology, and the like, and is widely used in 5G networks. In order to meet the requirements of the communication network for increasing capacity and coverage, the antenna array is enlarged, and the antenna gain of the antenna array in each direction is determined by the array element antenna pattern and the antenna array dimension. As antenna arrays continue to grow, so does the antenna pattern.

In an example, as shown in fig. 1, an antenna azimuth chart is provided in an embodiment of the present application. The antenna pattern is the antenna pattern of the 4*8 antenna array.

Wherein the abscissa of the antenna azimuth graph of a in fig. 1 represents the azimuth angle of the communication system, and the ordinate represents the antenna gain at a plurality of azimuth angles. The abscissa of the antenna azimuth graph of b in fig. 1 represents the elevation angle of the communication system, and the ordinate represents the antenna gain at a plurality of elevation angles. The antenna gain for a plurality of azimuth and elevation angles forms an antenna gain curve. The azimuth angle may vary from-180 degrees to 180 degrees and the elevation angle may vary from 0 degrees to 180 degrees.

The maximum radiation beam in the antenna gain curve is called a main lobe, and the small beam beside the main lobe is called a side lobe.

In one example, antenna gains for a communication system at various azimuth and elevation angles may be calculated according to equation one.

Wherein M and N respectively represent the numbers of antenna elements in the antenna array, M and N respectively correspond to the N-th element of the M-th row, w and v are used for calculating the beam gain, w represents the weight, and v represents the superposition vector.A composite pattern of the directions is shown and,is the maximum gain of a single array element. θ is the elevation angle of the path between the communication systems.

As can be seen from the antenna azimuth diagram of fig. 1, in a certain zoom-out range, as the elevation angle increases gradually, the antenna gain of the communication system may be located at a vertex, a middle point, a concave point, etc., and there is no fixed trend in the relationship between the zoom-out range and the antenna gain, so that during simulation analysis, when the zoom-out range is slightly changed, the interference signal received by the communication system changes drastically, and the analysis of the overall coexistence conclusion increases difficulty and misguidance.

In general, in order to eliminate the influence of the concave point of the antenna gain on the interference analysis, when the coexistence simulation platform is implemented, the data at the concave point of the antenna gain is manually removed in a test mode, so that the overall conclusion and the distance show positive correlation trend, that is, the farther the distance is, the smaller the interference is. However, the manual mode is large in workload and long in time consumption, the influence of antenna recess on coexistence research is not fundamentally solved, and meanwhile, data of missing recess points are researched, so that research data is incomplete.

In view of this, the embodiment of the application provides a method for determining interference between communication systems, which is to construct an antenna azimuth graph of a system according to a preset simulation system, fit an antenna peak curve through coordinate data of antenna gain main lobe and side lobe peaks in the antenna azimuth graph, replace an antenna azimuth graph without fixed trend, eliminate an abnormal conclusion that the interference is stronger as the distance is far from an antenna gain pit, calculate interference power between systems, further solve an overall calculation error caused by the antenna pit, and improve accuracy of coexistence analysis.

Fig. 2 is a schematic architecture diagram of a communication system according to an embodiment of the present application. The communication system includes a first communication system and a second communication system and a plurality of terminals.

The interference link exists between the first communication system and the second communication system, which means the interference caused by the second communication system to the first communication system. And the second communication system and the terminal provide signal service for the ground terminal operation for the service link. The horizontal distance between the first communication system and the second communication system is a remote distance, and the distance has a positive correlation with the interference between the systems, namely, the more the distance is, the weaker the interference is.

In this embodiment, the first communication system includes an international mobile communication (international mobile telecommunications, IMT) base station, and the second communication system includes an overhead base station (high altitude platforms as IMT base stations, HIBS).

The IMT base station is a global system for cellular mobile communications, including satellite mobile communications, terrestrial mobile communications, and cordless telephones. It can provide the public with various broadband information services such as images, music, web browsing, video conferences, etc., which the first two generations of products cannot provide.

It should be noted that, since the IMT base station uses an AAS antenna, the larger the antenna array, the more complex the antenna pattern is, and there are many concave points in the vertical and horizontal directions, and there is no fixed trend in the relationship between the pull-away distance and the antenna gain. In the simulation analysis, the whole conclusion is misled, so that the influence of the antenna gain recess needs to be eliminated.

The HIBS base station refers to a communication network in which a wireless base station is installed on an aircraft that stays high for a long time to provide telecommunication services. The method uses the existing communication technology to cover large-area areas with lower cost, such as remote rural areas, coastlines, mountains, deserts and other areas.

The communication system shown in fig. 2 is a communication system constructed by simulation by a simulation device. The cells and terminals in fig. 2 are both in the same simulation system. The method in the embodiment of the application simulates the actual communication environment through simulation, so that the antenna gain of the communication system is obtained. Thus, when networking is performed later, communication engineering personnel can adjust or optimize the cell to be planned according to the simulation result.

It should be noted that, the network system described in the embodiments of the present application is for more clearly describing the technical solution of the embodiments of the present application, and does not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network system and the appearance of other network systems, the technical solution provided in the embodiments of the present application is applicable to similar technical problems.

In an example, the embodiment of the application also provides a device for determining interference between communication systems, which can be used for executing the method of the embodiment of the application. For example, the determining means may be a simulation device or a device in the simulation device. The determining means may be provided with simulation software which may be used to perform the simulation process.

For example, as shown in fig. 3, a schematic diagram of an apparatus 300 for determining interference between communication systems according to an embodiment of the present application is provided. The determining means 300 may comprise a processor 301, a communication interface 302 and a communication line 303.

Further, the determining device 300 may further include a memory 304. The processor 301, the memory 304, and the communication interface 302 may be connected by a communication line 303.

The processor 301 is a CPU, general-purpose processor, network processor (network processor, NP), digital signal processor (digital signal processing, DSP), microprocessor, microcontroller, programmable logic device (programmable logic device, PLD), or any combination thereof. The processor 301 may also be any other device having a processing function, such as a circuit, a device or a software unit, without limitation.

A communication interface 302 for communicating with other devices or other communication networks. The communication interface 302 may be a unit, a circuit, a communication interface, or any device capable of enabling communication.

A communication line 303 for communicating information between the components comprised by the determining apparatus 300.

Memory 304 for storing instructions. Wherein the instructions may be computer programs.

The memory 304 may be, but not limited to, a read-only memory (ROM) or other type of static storage device capable of storing static information and/or instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device capable of storing information and/or instructions, an EEPROM, a CD-ROM (compact disc read-only memory) or other optical disk storage, an optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, etc.

It should be noted that the memory 304 may exist separately from the processor 301 or may be integrated with the processor 301. Memory 304 may be used to store instructions or program code or some data, etc. The memory 304 may be located inside the determining apparatus 300 or outside the determining apparatus 300, without limitation. The processor 301 is configured to execute the instructions stored in the memory 304 to implement the method for determining interference between communication systems according to the following embodiments of the present application.

In one example, processor 301 may include one or more CPUs, such as CPU0 and CPU1 in fig. 3.

As an alternative implementation, the determining means 300 comprises a plurality of processors, e.g. in addition to the processor 301 in fig. 3, a processor 307 may be included.

As an alternative implementation, the determining apparatus 300 further comprises an output device 305 and an input device 306. Illustratively, the input device 306 is a keyboard, mouse, microphone, or joystick device, and the output device 305 is a display screen, speaker (spaker), or the like.

It should be noted that the determining apparatus 300 may be a desktop computer, a portable computer, a web server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system, or a device having a similar structure as in fig. 3. Further, the constituent structure shown in fig. 3 is not limited, and may include more or less components than those shown in fig. 3, or may combine some components, or may be arranged differently, in addition to those shown in fig. 3.

In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices.

Further, actions, terms, etc. referred to between embodiments of the present application may be referred to each other without limitation. In the embodiment of the present application, the name of the message or the name of the parameter in the message, etc. interacted between the devices are only an example, and other names may also be adopted in the specific implementation, and are not limited.

It should be noted that, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

The method for determining interference between communication systems according to the embodiment of the present application is described below with reference to the architecture shown in fig. 2.

As shown in fig. 4, the embodiment of the present application is a flowchart of a method for determining interference between communication systems provided in the embodiment of the present application. The method comprises the following steps:

s401, constructing an antenna azimuth diagram of the first communication system according to a preset simulation system.

The preset simulation system can be used for coexistence analysis between two systems and evaluating conditions required by coexistence between the systems.

In a possible implementation, the determining means may simulate according to a pre-configured modeling software to construct an antenna orientation map of the first communication system. For example, the modeling software may be MATLAB, simulink, etc.

In an example, taking an analysis of interference of the second communication system to the first communication system as an example, the first communication system may be an IMT system, and the second communication system may be an HIBS system. The determining means may simulate the first communication system and the second communication system according to the modeling software configured in advance, and simulate operating the first communication system and the second communication system in response to the input operation parameters of the first communication system and the operation parameters of the second communication system. That is, the determination means may simulate the communication environment composed of the first communication system and the second communication system. Meanwhile, the first communication system and the second communication system may generate inter-system interference when they are operated in a simulation.

Wherein the first communication system is an existing system or an interfered communication system. The second communication system is a new communication system or a communication system generating new services. The antenna azimuth map of the first communication system may include a main lobe and a plurality of side lobes.

Specifically, the determining device may obtain values of antenna gain under different azimuth angles and elevation angles in response to adjustment of azimuth angles and elevation angles of the array antenna of the first communication system, so as to construct an antenna azimuth map of the first communication system.

S402, fitting an antenna gain peak curve according to vertex coordinate data of a curve corresponding to a main lobe of an antenna azimuth chart and vertex coordinate data of curves corresponding to a plurality of side lobes.

The vertex coordinate data of the curve corresponding to the main lobe refers to coordinate data corresponding to the highest point of the maximum radiation beam in the antenna gain curve. For example, as shown in a of fig. 1, the coordinate data may be (x, y). Where x is the elevation angle of a certain position, and y is the antenna gain corresponding to the elevation angle. The vertex coordinate data of the curve corresponding to the side lobe refers to coordinate data corresponding to the highest point of each peak beside the maximum radiation beam, and for example, as shown in b of fig. 1, the coordinate data may include (c, d) and (e, f), etc. The antenna gain peak profile may be used to reflect interference from the second communication device to the first communication device.

In one possible implementation manner, the determining device of the interference between communication systems may determine, based on a least square method, a functional expression corresponding to an antenna gain peak curve according to vertex coordinate data of a curve corresponding to a main lobe and vertex data of curves corresponding to a plurality of side lobes. The means for determining the inter-communication system interference may then fit an antenna gain peak curve based on the functional expression.

In one example, the determining means may represent vertex coordinate data of a curve corresponding to the main lobe of the antenna azimuth graph and vertex coordinate data of curves corresponding to the respective side lobes as one fitting polynomial. For example, the polynomial may be as shown in equation two.

G＝a ₀ θ ⁿ +a ₁ θ ^n-1 +a ₂ θ ^n-2 +…+a _n-1 θ ¹ +a _n Formula II

Wherein a is ₀ ～a _n Coefficients representing polynomials, n representing the degree of the polynomial, may be used to represent the effect of fitting the data.

It should be noted that, the degree of the polynomial is too high, the overfitting phenomenon occurs, and the degree of the polynomial is too low, the underfitting phenomenon occurs, and neither overfitting nor underfitting can represent the final objective function.

In one example, the determining device may obtain a sample point G of the main lobe and the side lobe vertices in the antenna azimuth graph _i And the abscissa θ of the sample point _i The sample point G is obtained by taking the sample point G into a polynomial of a formula II _i Is the vertical coordinate of (2):

further, to achieve better fitting accuracy, the determining means may calculate the points according to formula threeAnd sample point G _i Is the sum of squares of the residuals.

Where e represents the sum of squares of the residuals and m is the number of sample points.

Further, the determining device may determine the deviation of e, and make the values of the inverse of the deviation equal to 0. Thus, the coefficients of the polynomial can be obtained.

Specifically, the process of determining the coefficients of the device computing the polynomial is:

1. and as shown in a formula IV, solving the bias guide for the epsilon and enabling the reciprocal of the bias guide to be 0.

2. And substituting the polynomials of the formula II and the formula III into a formula IV to obtain the following formula:

3. calculating a according to the formulas in 2 ₀ ～a _n 。

For example, the vertices of the antenna azimuth graph include three points, and the coordinate data of the three vertices are (2, 3), (0,1.1), (1,1.9), respectively. When n in formula two is 1, g=a ₀ θ+a _n . Bringing the three vertices into g=a ₀ θ+a _n The method comprises the following steps of:

further, it willTo->Equal to zero, a can be calculated ₀ Equal to 0.95, a _n Equal to 1.05. That is, the polynomial of equation two is g=0.95θ+1.05. That is, the antenna gain peak curve in the embodiment of the present application is a straight line.

For another example, when n=2, the coordinate data of the three vertices are brought into formula two, and partial derivative calculation is performed, so that a polynomial corresponding to the antenna gain peak curve can be obtained, and the polynomial is a quadratic polynomial, that is, in the implementation of the present application, the antenna gain peak curve is parabolic.

In the embodiment of the application, by deriving the variance e so that each time the bias is 0, the optimal function of the antenna gain peak curve can be calculated. An antenna gain peak curve may be fitted based on the optimal function. For example, fig. 5 is a graph of fitted antenna gain peaks based on the antenna azimuth graph of fig. 1 in an embodiment of the present application. In fig. 5, a solid line represents an antenna gain peak curve, and a broken line represents an antenna azimuth map. In fig. 5 a, the abscissa represents the azimuth angle, and the ordinate represents the antenna gain, and the a represents the antenna gain peak curve fitted based on the antenna azimuth map shown in fig. 1 a. Fig. 5 b is an antenna gain peak curve fitted based on the antenna azimuth map shown in fig. 1 b. In fig. 5 b, the abscissa is the elevation angle and the ordinate is the antenna gain.

As can be seen from fig. 5 a and b, the antenna gain peak curve fitted in the embodiment of the present application does not have an antenna gain dip, that is, the antenna gain of the antenna gain peak curve changes smoothly with the change of angle, and does not change greatly. For example, in fig. 5 a, the antenna gain is gradually increased between-140 degrees and 0 degrees, whereas in the antenna azimuth diagram of fig. 1 a, the variation amplitude of the antenna gain is large due to the existence of the depression point between-140 degrees and 0 degrees. For another example, in fig. 5 b, the antenna gain gradually increases between 0 degrees and 90 degrees, and the antenna gain gradually decreases between 90 degrees and 180 degrees, whereas in the antenna azimuth graph in fig. 1 b, the variation amplitude of the antenna gain is large due to the presence of the depression point.

Based on the technical scheme of fig. 4, in the embodiment of the application, an antenna pattern of the interfered communication system is constructed through a simulation system, and an antenna gain peak curve is fitted according to coordinate data of a main lobe and a side lobe vertex of the antenna pattern. Because the antenna gain peak area does not have a concave point of the antenna gain, the influence of the concave point on the interference condition of the communication system is eliminated. Therefore, the interference condition among communication systems can be accurately analyzed through the antenna gain peak value area.

In a possible embodiment, as shown in fig. 6, the method provided in the embodiment of the present application may further include:

s601, determining interference power of each cell of a plurality of cells of the second communication system to the first communication system.

In one possible implementation manner, for any one of the cells of the second communication system, the determining device may determine a signal transmission power of the cell, an antenna gain of the cell directed to the first communication system, a signal propagation loss between the second communication system and the first communication system, and an antenna gain of the first communication system, and determine an interference power of the cell to the first communication system according to the signal transmission power of the cell, the antenna gain of the cell directed to the first communication system, the signal propagation loss between the second communication system and the first communication system, and the antenna gain of the first communication system.

The signal transmitting power of the cell, the antenna gain of the cell pointing to the first communication system, the signal propagation loss between the second communication system and the first communication system, and the antenna gain of the first communication system can be obtained through simulation measurement. That is, the determining means may determine the signal transmission power of the cell, the antenna gain of the cell directed to the first communication system, the signal propagation loss between the second communication system and the first communication system, and the antenna gain of the first communication system in response to the output operation parameter.

In an example, in combination with the interference of the HIBS base station to the IMT base station, the determining apparatus may calculate the interference of the HIBS single cell to the IMT base station according to the fifth formula.

I _n ＝P _tx +G _tx -PL+G _rx Formula five

Wherein I is _n The n-th cell of the HIBS base station is shown to be directed to the interference power of the IMT base station in decibel milliwatts per megahertz (dBm/MHz). P (P) _tx The transmit power of the nth cell of the HIBS base station is expressed in dBm. G _tx The nth cell of the HIBS base station is indicated to point to the antenna gain of the IMT base station in dBi. PL represents the propagation loss in dB from the HIBS base station to the IMT base station. C (C) _rx The antenna gain of an IMT base station is expressed in dBi.

S602, calculating the interference value of the second communication system to the first communication system according to the interference power of each cell of the second communication system to the first communication system and the number of cells of the second communication system.

For example, in combination with the example in S601 described above, the determining means may calculate the aggregate interference caused by a single HIBS base station to the IMT base station according to equation six.

Wherein I is _total The aggregate interference of the HIBS base station to the IMT base station is expressed in dBm/10MHz. n denotes each cell number of the HIBS base station. I _n The interference power unit of the nth cell of the HIBS to the IMT base station is dBm/10MHz. N denotes the number of HIBS cells.

Based on the technical scheme of fig. 6, the interference power of each cell of the second communication system to the first communication system is calculated first, and after the interference power of each cell of the second communication system to the first communication system is obtained, the interference value of the first communication system of the second communication system can be accurately calculated according to the interference power of a plurality of cells of the second communication system to the first communication system.

The various schemes in the embodiments of the present application may be combined on the premise of no contradiction.

The embodiment of the present application may divide the functional modules or functional units of the interference determination device according to the above method example, for example, each functional module or functional unit may be divided corresponding to each function, or two or more functions may be integrated in one processing unit. The integrated units may be implemented in hardware, or in software functional modules or functional units. The division of the modules or units in the embodiments of the present application is merely a logic function division, and other division manners may be implemented in practice.

In the case of dividing the respective functional units with the respective functions, fig. 7 shows a schematic configuration of an interference determination device 70, which interference determination device 70 can be used to perform the functions involved in the simulation apparatus in the above-described embodiment. The interference determination device 70 shown in fig. 7 may include: a construction unit 701, a processing unit 702, a determination unit 703.

A construction unit 701, configured to construct an antenna azimuth graph of the first communication system according to a preset simulation system, where the antenna azimuth graph includes a main lobe and a plurality of side lobes, a curve corresponding to the main lobe includes a plurality of antenna gain values, and a curve corresponding to the side lobe includes a plurality of antenna gain values;

the processing unit 702 is configured to fit an antenna gain peak curve according to vertex coordinate data of a curve corresponding to the main lobe and vertex coordinate data of curves corresponding to the side lobes, where the antenna gain peak curve is used to reflect interference conditions of the second communication system on the first communication system, and the antenna gain peak curve includes antenna gain values of the first communication system under different angles.

In a possible implementation manner, the processing unit 702 is specifically configured to: based on a least square method, determining a function expression corresponding to the antenna gain peak curve according to vertex coordinate data of a curve corresponding to the main lobe and vertex coordinate data of curves corresponding to the side lobes, and fitting the antenna gain peak curve according to the function expression.

In a possible implementation manner, as shown in fig. 7, the apparatus may further include a determining unit 703, configured to determine an interference power of each cell of the plurality of cells of the second communication system to the first communication system. And calculating the interference value of the second communication system to the first communication system according to the interference power of each cell of the second communication system to the first communication system and the number of cells of the second communication system.

In a possible implementation manner, the determining unit 703 is specifically configured to, for any one of a plurality of cells of the second communication system:

the signal transmit power of the cell, the antenna gain of the cell directed to the first communication system, the signal propagation loss between the second communication system and the first communication system, and the antenna gain of the first communication system are determined. And determining the interference power of the cell to the first communication system according to the signal transmitting power of the cell, the antenna gain of the cell pointing to the first communication system, the signal propagation loss between the second communication system and the first communication system and the antenna gain of the first communication system, wherein the antenna gain of the first communication system is the antenna gain corresponding to any angle on an antenna gain peak curve.

As yet another implementation, the processing unit 702 in fig. 7 may be replaced by a processor, which may integrate the functionality of the processing unit 702.

Embodiments of the present application also provide a computer-readable storage medium. All or part of the flow in the above method embodiments may be implemented by a computer program to instruct related hardware, where the program may be stored in the above computer readable storage medium, and when the program is executed, the program may include the flow in the above method embodiments. The computer readable storage medium may be an internal storage unit of the determining apparatus (including the data transmitting end and/or the data receiving end) of the inter-communication system interference of any of the foregoing embodiments, for example, a hard disk or a memory of the determining apparatus. The computer readable storage medium may be an external storage device of the terminal apparatus, for example, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash card (flash card), or the like, which are provided in the terminal apparatus. Further, the above-described computer-readable storage medium may further include both the internal storage unit and the external storage device of the above-described determination apparatus. The computer-readable storage medium is used for storing the computer program and other programs and data required by the interference determination device. The above-described computer-readable storage medium may also be used to temporarily store data that has been output or is to be output.

It should be noted that the terms "first" and "second" and the like in the description, claims and drawings of the present application are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

It should be understood that, in the present application, "at least one (item)" means one or more, "a plurality" means two or more, "at least two (items)" means two or three and three or more, "and/or" for describing an association relationship of an association object, three kinds of relationships may exist, for example, "a and/or B" may mean: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional units is illustrated, and in practical application, the above-described functional allocation may be performed by different functional units, that is, the internal structure of the apparatus is divided into different functional units, so as to perform all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., a unit or division of units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, 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 an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and the parts shown as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. 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 each embodiment 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 readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior 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 to cause a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) 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 usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for determining interference between communication systems, the method comprising:

according to a preset simulation system, an antenna azimuth graph of a first communication system is constructed, wherein the antenna azimuth graph comprises a main lobe and a plurality of side lobes, a curve corresponding to the main lobe comprises a plurality of antenna gain values, and a curve corresponding to the side lobes comprises a plurality of antenna gain values;

and fitting an antenna gain peak value curve according to the vertex coordinate data of the curve corresponding to the main lobe and the vertex coordinate data of the curves corresponding to the side lobes, wherein the antenna gain peak value curve is used for reflecting the interference condition of the second communication system on the first communication system, and comprises antenna gain values of the first communication system under different angles.

2. The method of claim 1, wherein fitting the antenna gain peak curve based on the vertex coordinate data of the curve corresponding to the main lobe and the vertex coordinate data of the curve corresponding to each of the plurality of side lobes comprises:

Based on a least square method, determining a function expression corresponding to the antenna gain peak curve according to vertex coordinate data of the curve corresponding to the main lobe and vertex coordinate data of the curve corresponding to each of the side lobes;

and fitting the antenna gain peak curve according to the function expression.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

determining an interference power of each cell of a plurality of cells of the second communication system to the first communication system;

4. A method according to claim 3, wherein said determining, for any one of a plurality of cells of said second communication system, the interference power of each of the plurality of cells of said second communication system to said first communication system comprises:

determining a signal transmit power of the cell, an antenna gain of the cell directed to the first communication system, a signal propagation loss between the second communication system and the first communication system, and an antenna gain of the first communication system;

And determining interference power of the cell to the first communication system according to the signal transmitting power of the cell, the antenna gain of the cell pointing to the first communication system, the signal propagation loss between the second communication system and the first communication system and the antenna gain of the first communication system, wherein the antenna gain of the first communication system is the antenna gain corresponding to any angle on the antenna gain peak curve.

5. The device for determining the interference between the communication systems is characterized by comprising a construction unit and a processing unit;

the construction unit is used for constructing an antenna azimuth graph of the first communication system according to a preset simulation system, wherein the antenna azimuth graph comprises a main lobe and a plurality of side lobes, a curve corresponding to the main lobe comprises a plurality of antenna gain values, and a curve corresponding to the side lobes comprises a plurality of antenna gain values;

the processing unit is configured to fit an antenna gain peak curve according to vertex coordinate data of a curve corresponding to the main lobe and vertex coordinate data of curves corresponding to a plurality of side lobes, where the antenna gain peak curve is used to reflect interference conditions of a second communication system on the first communication system, and the antenna gain peak curve includes antenna gain values of the first communication system under different angles.

6. The determination device according to claim 5, wherein the processing unit is specifically configured to:

and fitting the antenna gain peak curve according to the function expression.

7. The determination device according to claim 5 or 6, further comprising a determination unit for:

8. The determination device according to claim 7, wherein the determination unit is specifically configured to, for any one of a plurality of cells of the second communication system:

9. An apparatus for determining interference between communication systems, comprising: a processor, a memory, and a communication interface; wherein the communication interface is used for the communication between the determining device and other equipment or network; the memory is configured to store one or more programs, the one or more programs comprising computer-executable instructions that, when executed by the determining device, cause the determining device to perform the method of any of claims 1-4.

10. A computer readable storage medium having instructions stored therein which, when executed, implement the method of any of claims 1-4.