CN114286372B

CN114286372B - Antenna downtilt angle evaluation method, device and computer readable storage medium

Info

Publication number: CN114286372B
Application number: CN202111484268.3A
Authority: CN
Inventors: 刘光海; 梁大鹏; 刘斌; 刘伯伦; 朱顺翌; 庞翀; 薛永备; 肖天; 李�一
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2023-05-16
Anticipated expiration: 2041-12-07
Also published as: CN114286372A

Abstract

The application provides an antenna downtilt angle assessment method, an antenna downtilt angle assessment device and a computer readable storage medium, relates to the technical field of communication, and can solve the problems of low accuracy, large assessment workload, time and labor waste and the like in the process of manually assessing the antenna downtilt angle. The method comprises the following steps: determining a first coverage distance and a second coverage distance of a cell to be evaluated; the first coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at the first preset angle and the ground and the cell to be evaluated; the second coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at the second preset angle and the ground and the cell to be evaluated; determining at least one third distance; and determining whether the antenna downtilt angle of the cell to be evaluated is reasonable or not according to at least one of the comparison result of the first coverage distance and the at least one third distance and the comparison result of the second coverage distance and the at least one third distance. The method and the device are used for accurately and rapidly evaluating the antenna downtilt angle.

Description

Antenna downtilt angle evaluation method, device and computer readable storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to an antenna downtilt angle evaluation method, an antenna downtilt angle evaluation device, and a computer readable storage medium.

Background

In a mobile communication network, an operator controls the coverage area of an antenna beam of an access network device by setting the antenna downtilt angle of the access network device. If the antenna downtilt angle of the access network equipment is set to be too small, the signal coverage area of the access network equipment is larger, so that the signal of the access network equipment can cause interference to the signal of the adjacent access network equipment, and further the problems of mutual interference and overlapping coverage between the adjacent access network equipment are caused. If the antenna downtilt angle of the access network device is set to be too large, the signal coverage area of the access network device is smaller, so that the signal received by the terminal device at the edge of the preset coverage area is weaker, and even the problem that the signal coverage (i.e. coverage hole) is not available at the edge of the preset coverage area occurs. In order to avoid the problems of mutual interference, overlapping coverage and coverage holes, it is necessary to evaluate the antenna downtilt angle of the access network device, and determine whether the antenna downtilt angle is reasonable, so as to adjust the antenna downtilt angle in time when the antenna downtilt angle is unreasonable.

Currently, a manual evaluation mode is generally adopted for evaluating the downtilt angle of the antenna, namely, a radio frequency engineer surveys whether the downtilt angle of the antenna is reasonable or not in the field. However, the manual field evaluation may cause deviation of the downtilt angle of the evaluation antenna due to manual errors or insufficient manual accuracy, and the manual evaluation requires a radio frequency engineer to go to the field for survey, which is a great amount of evaluation work and is time-consuming and labor-consuming.

Disclosure of Invention

The application provides an antenna downtilt angle evaluation method, an antenna downtilt angle evaluation device and a computer readable storage medium, which can accurately and rapidly evaluate the antenna downtilt angle.

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

in a first aspect, the present application provides a method for estimating a downtilt angle of an antenna, the method including: determining a first coverage distance and a second coverage distance of a cell to be evaluated; the first coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at the first preset angle and the ground and the cell to be evaluated; the first preset angle is the difference between the antenna downtilt angle and the upper vertical half-power angle of the cell to be evaluated; the second coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at the second preset angle and the ground and the cell to be evaluated; the second preset angle is the sum of the antenna downward inclination angle and the lower vertical half power angle; determining at least one third distance; any one of the at least one third distance is a distance between any one of the at least one neighbor of the cell to be evaluated and the cell to be evaluated; and determining whether the antenna downtilt angle of the cell to be evaluated is reasonable or not according to at least one of the comparison result of the first coverage distance and the at least one third distance and the comparison result of the second coverage distance and the at least one third distance.

Based on the above technical solution, the antenna downtilt angle evaluation method provided by the present application determines a first coverage distance, a second coverage distance, and at least one third distance of a cell to be evaluated, and determines, according to at least one of a comparison result of the first coverage distance and the at least one third distance, and a comparison result of the second coverage distance and the at least one third distance, whether a coverage area of the cell to be evaluated is within a reasonable range for each of the at least one neighboring cell. The computing device can determine the first coverage distance and the second coverage distance according to the antenna downward inclination angle, the upper/lower side vertical half power angle and the position information of the cell to be evaluated, which are acquired from the industrial parameter data, and determine the third distance of at least one neighboring cell according to the position information of at least one neighboring cell acquired from the industrial parameter data, and whether the antenna preset angle is set unreasonably can be accurately and rapidly evaluated by comparing the first coverage distance with the third distance or comparing the second coverage distance with the third distance, so that the problem caused by manual survey is avoided.

In one possible implementation, a first neighbor cell is determined from at least one neighbor cell; the comparison result of the first coverage distance and the third distance corresponding to the first adjacent cell meets a first preset condition, and the comparison result of the second coverage distance and the third distance corresponding to the first adjacent cell meets a second preset condition; determining an antenna downtilt angle evaluation coefficient of a cell to be evaluated according to the number of adjacent cells of the first adjacent cell; the antenna downtilt angle evaluation coefficient is the ratio of the number of adjacent cells of the first adjacent cell to the number of adjacent cells of at least one adjacent cell; under the condition that the antenna downtilt angle evaluation coefficient is larger than a preset threshold value, determining that the antenna downtilt angle setting of the cell to be evaluated is unreasonable; and under the condition that the antenna downtilt angle evaluation coefficient is smaller than or equal to a preset threshold value, determining that the antenna downtilt angle of the cell to be evaluated is reasonable in arrangement.

In one possible implementation, the first preset condition includes: the sum of the third distance corresponding to the first adjacent region and the distance residual value is smaller than or equal to the first coverage distance; the second preset condition includes: and the sum of the third distance corresponding to the first adjacent region and the distance residual value which is 0.5 times of the first adjacent region is larger than or equal to the second coverage distance.

In one possible implementation, determining antenna hang-up, antenna downtilt, and vertical half-power angle of the cell under evaluation; and determining a first coverage distance and a second coverage distance according to the antenna hanging height, the antenna downward inclination angle and the vertical half power angle.

In one possible implementation, the first coverage distance satisfies the following formula:

OBu＝OA/tan(θ-0.5×φ)

wherein OBu is a first coverage distance; OA is antenna hanging height; θ is the antenna downtilt; phi is the vertical half power angle.

In one possible implementation, the second coverage distance satisfies the following formula:

OBd＝OA/tan(θ+0.5×φ)

wherein OBd is the second coverage distance.

In one possible implementation, a neighbor search angle and a neighbor search radius of the cell to be evaluated are determined; the neighbor cell search angle is determined according to the number of sectors of the cell to be evaluated; the neighbor cell searching radius is an average value of a plurality of fourth distances; the fourth distance is the distance between any one of a plurality of adjacent cells of the cell to be evaluated and the cell to be evaluated; determining a preset neighbor search range according to the neighbor search angle and the neighbor search radius; determining that a neighboring cell in the preset neighboring cell search range in the plurality of neighboring cells is a second neighboring cell; determining at least one neighbor cell from the second neighbor cells; wherein, when the number of the second adjacent cells is less than or equal to L, the second adjacent cells are at least one adjacent cell; when the number of the second adjacent cells is larger than L, the first L adjacent cells with the smallest fourth distance in the second adjacent cells are at least one adjacent cell; wherein L is a positive integer.

In a second aspect, the present application provides an antenna downtilt angle evaluation apparatus, the apparatus comprising: a processing unit; a processing unit, configured to determine a first coverage distance and a second coverage distance of a cell to be evaluated; the first coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at the first preset angle and the ground and the cell to be evaluated; the first preset angle is the difference between the antenna downtilt angle and the upper vertical half-power angle of the cell to be evaluated; the second coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at the second preset angle and the ground and the cell to be evaluated; the second preset angle is the sum of the antenna downward inclination angle and the lower vertical half power angle; a processing unit for determining at least one third distance; any one of the at least one third distance is a distance between any one of the at least one neighbor of the cell to be evaluated and the cell to be evaluated; the processing unit is further configured to determine whether the antenna downtilt angle of the cell to be evaluated is reasonable according to at least one of the comparison result of the first coverage distance and the at least one third distance and the comparison result of the second coverage distance and the at least one third distance.

In one possible implementation, the processing unit is specifically configured to: determining a first neighbor cell from the at least one neighbor cell; the comparison result of the first coverage distance and the third distance corresponding to the first adjacent cell meets a first preset condition, and the comparison result of the second coverage distance and the third distance corresponding to the first adjacent cell meets a second preset condition; determining an antenna downtilt angle evaluation coefficient of a cell to be evaluated according to the number of adjacent cells of the first adjacent cell; the antenna downtilt angle evaluation coefficient is the ratio of the number of adjacent cells of the first adjacent cell to the number of adjacent cells of at least one adjacent cell; under the condition that the antenna downtilt angle evaluation coefficient is larger than a preset threshold value, determining that the antenna downtilt angle setting of the cell to be evaluated is unreasonable; and under the condition that the antenna downtilt angle evaluation coefficient is smaller than or equal to a preset threshold value, determining that the antenna downtilt angle of the cell to be evaluated is reasonable in arrangement.

In one possible implementation, the processing unit is specifically configured to: determining antenna hanging height, antenna downward inclination angle and vertical half power angle of a cell to be evaluated; and determining a first coverage distance and a second coverage distance according to the antenna hanging height, the antenna downward inclination angle and the vertical half power angle.

OBu＝OA/tan(θ-0.5×φ)

OBd＝OA/tan(θ+0.5×φ)

wherein OBd is the second coverage distance.

In a possible implementation, the processing unit is further configured to: determining a neighbor search angle and a neighbor search radius of a cell to be evaluated; the neighbor cell search angle is determined according to the number of sectors of the cell to be evaluated; the neighbor cell searching radius is an average value of a plurality of fourth distances; the fourth distance is the distance between any one of a plurality of adjacent cells of the cell to be evaluated and the cell to be evaluated; determining a preset neighbor search range according to the neighbor search angle and the neighbor search radius; determining that a neighboring cell in the preset neighboring cell search range in the plurality of neighboring cells is a second neighboring cell; determining at least one neighbor cell from the second neighbor cells; wherein, when the number of the second adjacent cells is less than or equal to L, the second adjacent cells are at least one adjacent cell; when the number of the second adjacent cells is larger than L, the first L adjacent cells with the smallest fourth distance in the second adjacent cells are at least one adjacent cell; wherein L is a positive integer.

In a third aspect, the present application provides an antenna downtilt angle evaluation apparatus, including: a processor and a communication interface; the communication interface is coupled to a processor for running a computer program or instructions to implement the antenna downtilt estimation method as described in any one of the possible implementations of the first aspect and the first aspect.

In a fourth aspect, the present application provides a computer readable storage medium having instructions stored therein which, when run on a terminal, cause the terminal to perform an antenna downtilt estimation method as described in any one of the possible implementations of the first aspect and the first aspect.

In a fifth aspect, the present application provides a computer program product comprising instructions which, when run on an antenna downtilt evaluation apparatus, cause the antenna downtilt evaluation apparatus to perform the antenna downtilt evaluation method as described in any one of the possible implementations of the first aspect and the first aspect.

In a sixth aspect, the present application provides a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being for running a computer program or instructions to implement an antenna downtilt evaluation method as described in any one of the possible implementations of the first aspect and the first aspect.

In particular, the chip provided in the present application further includes a memory for storing a computer program or instructions.

Drawings

Fig. 1 is a block diagram of a communication system according to an embodiment of the present application;

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

fig. 3 is a flowchart of an antenna downtilt angle evaluation method according to an embodiment of the present application;

fig. 4 is a schematic diagram of an antenna downtilt estimation method according to an embodiment of the present application;

fig. 5 is a flowchart of another antenna downtilt estimation method according to an embodiment of the present application;

fig. 6 is a flowchart of another antenna downtilt estimation method according to an embodiment of the present application;

fig. 7 is a flowchart of another antenna downtilt estimation method according to an embodiment of the present application;

fig. 8 is a schematic diagram of a composition of at least one neighboring cell according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of an antenna downtilt estimation device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another antenna downtilt estimation device according to an embodiment of the present application.

Detailed Description

The following describes in detail an antenna downtilt angle evaluation method and device provided in an embodiment of the present application with reference to the accompanying drawings.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.

The terms "first" and "second" and the like in the description and in the drawings are used for distinguishing between different objects or for distinguishing between different processes of the same object and not for describing a particular sequential order of objects.

Furthermore, references to the terms "comprising" and "having" and any variations thereof in the description of the present application 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 but may optionally include other steps or elements not listed or inherent to such process, method, article, or apparatus.

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 description of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more.

As shown in fig. 1, fig. 1 shows a schematic structural diagram of a communication system according to an embodiment of the present application. The communication system may include: at least one access network device 101, at least one terminal device 102, and at least one computing device 103. Fig. 1 illustrates an access network device 101, two terminal devices 102, and a computing device 103, for example.

It should be noted that fig. 1 is only an exemplary frame diagram, and the number of nodes included in fig. 1 is not limited, and other nodes may be included in addition to the functional nodes shown in fig. 1, for example: core network devices, gateway devices, application servers, etc., are not limited.

The access network device 101 is mainly used for implementing functions of resource scheduling, radio resource management, radio access control, etc. of the terminal device 102. In particular, the access network device 101 may be any of a small base station, a wireless access point, a transceiver point (transmission receive point, TRP), a transmission point (transmission point, TP), and some other access node.

Both terminal devices 102 in fig. 1 are located within the coverage of the access network device 101, connected to the access network device 101, and may report measurement reports (measurement report, MR) to the access network device 101. The terminal device 102 may be a terminal (terminal equipment) or a User Equipment (UE) or a Mobile Station (MS) or a Mobile Terminal (MT), etc. Specifically, the terminal device 102 may be a mobile phone (mobile phone), a tablet computer, or a computer with a wireless transceiver function, and may also be a Virtual Reality (VR) terminal, an augmented reality (augmented reality, AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city (smart home), a vehicle-mounted terminal, and the like. In the embodiment of the present application, the means for implementing the function of the terminal device 102 may be the terminal device 102, or may be a device capable of supporting the terminal device 102 to implement the function, for example, a chip system.

The computing device 103 is configured to determine the first coverage distance, the second coverage distance, and the at least one third distance, and further configured to determine whether the antenna downtilt of the cell to be evaluated is reasonable according to a length relationship between the first coverage distance, the second coverage distance, and the at least one third distance.

It should be noted that, the computing device 103 may obtain, through the access network device 101, location information of at least one neighboring cell, and provide a data basis for determining the third distance.

In addition, the communication 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 as a person of ordinary skill in the art can know, with evolution of the network architecture and appearance of a new communication system, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems. In particular, the apparatus of fig. 1 may employ the constituent structure shown in fig. 2, or may include the components shown in fig. 2. Fig. 2 is a schematic diagram of a communication apparatus 200 provided in an embodiment of the present application, where the communication apparatus 200 may be an access network device 101 or a chip or a system on a chip in the access network device 101. As shown in fig. 2, the communication device 200 includes a processor 201, a communication interface 202, and a communication line 203.

Further, the communication device 200 may also include a memory 204. The processor 201, the memory 204, and the communication interface 202 may be connected by a communication line 203.

The processor 201 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 201 may also be other devices with processing functions, such as, without limitation, circuits, devices, or software modules.

Communication interface 202 is used to communicate with other devices or other communication networks. The other communication network may be an ethernet, a radio access network (radio access network, RAN), a wireless local area network (wireless local area networks, WLAN), etc. The communication interface 202 may be a module, a circuit, a communication interface, or any device capable of enabling communication.

Communication line 203 for transmitting information between the components included in communication device 200.

Memory 204 for storing instructions. Wherein the instructions may be computer programs.

The memory 204 may be, but is 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 204 may exist separately from the processor 201 or may be integrated with the processor 201. Memory 204 may be used to store instructions or program code or some data, etc. The memory 204 may be located inside the communication device 200 or outside the communication device 200, and is not limited. The processor 201 is configured to execute instructions stored in the memory 204 to implement a measurement method provided in the following embodiments of the present application.

In one example, processor 201 may include one or more CPUs, such as CPU0 and CPU1 in fig. 2.

As an alternative implementation, the communication device 200 includes multiple processors, e.g., in addition to the processor 201 in fig. 2, a processor 207 may be included.

As an alternative implementation, the communication apparatus 200 further comprises an output device 205 and an input device 206. Illustratively, the input device 206 is a keyboard, mouse, microphone, or joystick device, and the output device 205 is a display screen, speaker (spaker), or the like.

It should be noted that the communication apparatus 200 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. 2. Furthermore, the constituent structures shown in fig. 2 do not constitute limitations on the terminal device 102, and the terminal device 102 may include more or less components than those shown in fig. 2, or may combine some components, or may be a different arrangement of components.

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.

In addition, the communication 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 as a person of ordinary skill in the art can know, with evolution of the network architecture and appearance of a new communication system, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.

In a communication network, adjacent access network devices generally use the same frequency point, that is, the adjacent access network devices generally use the same frequency point for signal transmission, which also causes problems of mutual interference and overlapping coverage between the adjacent access network devices. Therefore, reasonable setting of the downtilt angle of the antenna has important significance for ensuring normal coverage of cells and reducing signal interference among cells. The setting of the antenna downtilt angle needs to be set according to actual conditions. The actual situations include: case 1.1, actual situation of the field geographical environment, and case 1.2, actual situation of user distribution.

Under the condition 1.1, the transmission of electromagnetic signals can be affected to a certain extent due to topography, street trend, building distribution, blocking of high-rise buildings, diffraction of high-rise buildings, reflection of high-rise buildings, water surface reflection, tree absorption and the like, so that the setting of the antenna downtilt angle needs to be set according to the actual condition of the on-site geographic environment.

In case 1.2, when the cells are in different areas, the terminal devices under the coverage of the different areas have different distributions, so that adaptive setting of the downtilt angle of the antenna is also required for the different areas where the cells are located.

For example, the distribution of user terminals across different areas also generally conforms to tidal effects. The tide effect is a phenomenon that people gather in a large amount in an office area or an industrial area during working time and migrate to a residential area after going out of work.

In one example, if an area is a residential area, the terminal devices in the area are distributed less during the day and the traffic is less, while the terminal devices in the area are distributed more during the night and the traffic is more.

As another example, if an area is an office area or an industrial area, the terminal devices in the area are distributed less at night and the traffic is smaller, while the terminal devices in the area are distributed more during the daytime and the traffic is larger.

In the prior art, when the downtilt angle of the antenna is adjusted, the rationality of the downtilt angle of the antenna is generally required to be evaluated first, so as to avoid negative effects caused by blind adjustment. At present, a manual evaluation mode is generally adopted, namely, a worker surveys whether the antenna downtilt angle is reasonable or not in the field. However, the manual field evaluation may cause deviation in the evaluation of the rationality of the downtilt angle of the antenna due to manual errors or insufficient manual accuracy, and the manual evaluation requires a worker to go to the field for surveying, which also causes problems of great workload, time and labor.

In order to solve the problems in the prior art, the embodiment of the application provides an antenna downtilt angle evaluation method, which can accurately and rapidly evaluate the antenna downtilt angle. As shown in fig. 3, the method includes:

s301, the computing device determines a first coverage distance and a second coverage distance of the cell to be evaluated.

The first coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at the first preset angle and the ground and the cell to be evaluated. The first preset angle is the difference between the antenna downtilt angle and the upper vertical half power angle of the cell to be evaluated.

The second coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at the second preset angle and the ground and the cell to be evaluated. The second preset angle is the sum of the antenna downtilt angle and the lower vertical half power angle.

For example, as shown in fig. 4, the first coverage distance may be a distance between a point B1 (i.e., an intersection point of a signal transmitted by the cell to be evaluated at a first preset angle and the ground) and a point O (i.e., a point of the cell to be evaluated). The second coverage distance may be a distance between the point B2 (i.e., an intersection of the signal transmitted by the cell under evaluation and the ground at a second preset angle) and the point O.

In a possible implementation manner, the specific implementation process of S301 may be: the computing device may determine, according to the operating parameter data, a location of the cell to be evaluated, an antenna hanging height, an antenna downtilt angle, an upper vertical half-power angle, and a lower vertical half-power angle, and determine, according to the location of the cell to be evaluated, the antenna hanging height, the antenna downtilt angle, the upper vertical half-power angle, and the lower vertical half-power angle, a first coverage distance and a second coverage distance, respectively.

S302, the computing device determines at least one third distance.

Wherein any one of the at least one third distance is a distance between any one of the at least one neighbor of the cell under evaluation and the cell under evaluation.

Illustratively, as shown in fig. 4, at least one neighbor cell includes three neighbor cells (i.e., neighbor cell N1, neighbor cell N2, neighbor cell N3). The third distance of the neighbor cell N1 may be a distance between the N1 point (i.e., the point where the neighbor cell N1 is located) and the O point; the third distance of the neighbor cell N2 may be a distance between the N2 point (i.e., the point where the neighbor cell N2 is located) and the O point; the third distance of the neighbor N3 may be a distance between the N3 point (i.e., the point where the neighbor N3 is located) and the O point.

In a possible implementation manner, the specific implementation process of S302 may be: the computing equipment determines the position information of a plurality of adjacent cells of the cell to be evaluated, and screens out a part of adjacent cells within a preset range from the plurality of adjacent cells according to the position information of the adjacent cells. The computing equipment determines the distance between the adjacent cell and the cell to be evaluated according to the position information of the adjacent cell and the position information of the cell to be evaluated, and screens at least one adjacent cell from the part of adjacent cells within the preset range according to the distance between the adjacent cell and the cell to be evaluated.

S303, the computing equipment determines whether the antenna downtilt angle of the cell to be evaluated is reasonable according to at least one of the comparison result of the first coverage distance and the at least one third distance and the comparison result of the second coverage distance and the at least one third distance.

In a possible implementation manner, the specific implementation process of S303 may be: the computing equipment screens out a first adjacent cell from the at least one adjacent cell according to at least one of the comparison results of the first coverage distance and the third distance corresponding to the at least one adjacent cell and the comparison results of the second coverage distance and the third distance corresponding to the at least one adjacent cell, determines the number of adjacent cells of the first adjacent cell and the number of adjacent cells of the at least one adjacent cell, and determines an antenna downtilt angle evaluation coefficient according to the ratio of the number of adjacent cells of the first adjacent cell to the number of adjacent cells of the at least one adjacent cell, so that the computing equipment can determine whether the antenna downtilt angle of the cell to be evaluated is reasonable or not by comparing the size relation between the antenna downtilt angle evaluation coefficient and a preset threshold value.

Under the condition that the antenna downtilt angle evaluation coefficient is larger than a preset threshold value, the computing equipment can determine that the antenna downtilt angle of the cell to be evaluated is unreasonable to set; under the condition that the antenna downtilt angle evaluation coefficient is smaller than or equal to a preset threshold value, the computing equipment can determine that the antenna downtilt angle of the cell to be evaluated is reasonable in arrangement.

The application provides an antenna downtilt evaluation method, a computing device determines a first coverage distance, a second coverage distance and at least one third distance of a cell to be evaluated, and according to at least one of a comparison result of the first coverage distance and the at least one third distance and a comparison result of the second coverage distance and the at least one third distance, it can be determined whether a coverage area of the cell to be evaluated is within a reasonable range for each of the at least one neighbor cell. The computing device can determine the first coverage distance and the second coverage distance according to the antenna downward inclination angle, the upper/lower side vertical half power angle and the position information of the cell to be evaluated, which are acquired from the industrial parameter data, and determine the third distance of at least one neighboring cell according to the position information of at least one neighboring cell acquired from the industrial parameter data, and whether the antenna preset angle is set unreasonably can be accurately and rapidly evaluated by comparing the first coverage distance with the third distance or comparing the second coverage distance with the third distance, so that the problem caused by manual survey is avoided.

In a possible implementation manner, in connection with fig. 3, as shown in fig. 5, S303 may be specifically implemented by the following S501 to S505.

S501, the computing device determines a first neighbor cell from at least one neighbor cell.

The comparison result of the first coverage distance and the third distance corresponding to the first adjacent cell meets a first preset condition. The comparison result of the second coverage distance and the third distance corresponding to the first adjacent cell meets a second preset condition. That is, the antenna downtilt setting of the cell to be evaluated with respect to the first neighbor is not reasonable.

In a possible implementation manner, the first preset condition includes: the sum of the third distance corresponding to the first adjacent region and the distance residual value is smaller than or equal to the first coverage distance. The second preset condition includes: and the sum of the third distance corresponding to the first adjacent region and the distance residual value which is 0.5 times of the first adjacent region is larger than or equal to the second coverage distance.

It should be noted that, in the case where the sum of the third distance corresponding to the first neighboring cell and the distance margin value is smaller than or equal to the first coverage distance, the computing device may determine that the antenna beam of the cell to be evaluated has already covered to the neighboring cell, and the coverage area of the antenna beam of the cell to be evaluated is too large. Thus, in this case, the computing device may determine that the antenna downtilt setting of the cell under evaluation is not reasonable for the neighbor cell, and thus determine that the neighbor cell is the first neighbor cell.

In the case that the sum of the third distance corresponding to the first neighboring cell and the distance margin value is greater than the second coverage distance by 0.5 times, the computing device may determine that the coverage distance of the cell to be evaluated does not reach half of the third distance of the neighboring cell, and a problem may occur that the antenna beam of the cell to be evaluated cannot normally cover the edge area of the cell to be evaluated. Therefore, in this case, the computing device may determine that the antenna downtilt setting of the cell to be evaluated is not reasonable, and further determine that the neighboring cell is the first neighboring cell.

Exemplary, as shown in fig. 4, values of 0.2 meters are used for the distance margin; the third distance ON1 corresponding to the adjacent region N1 is 15 meters; the third distance ON2 corresponding to the adjacent region N2 is 20 meters; the third distance ON3 corresponding to the adjacent region N3 is 22 meters; the first covering distance OB1 is 16 meters; the second coverage distance OB2 is 6 meters as an example:

the sum of the ON1 and the distance margin value (15.2 meters) is smaller than OB1 (16 meters), and the computing device may determine that the comparison result of the first coverage distance and the third distance corresponding to the neighboring cell N1 satisfies the first preset condition. The computing device may determine that the comparison result of the second coverage distance to the third distance corresponding to the neighbor N1 satisfies the second preset condition, where 0.5 times the sum of ON1 and the distance residual value (7.7 meters) is greater than OB2 (6 meters). Thus, in this case, the computing device may determine neighbor N1 as the first neighbor.

The sum of the ON2 and the distance margin value (20.2 meters) is greater than OB1 (16 meters), and the computing device may determine that the comparison result of the first coverage distance and the third distance corresponding to the neighboring cell N2 does not satisfy the first preset condition. The sum of the ON2 and the distance margin value (10.2 meters) is greater than OB2 (6 meters) by 0.5 times, and the computing device may determine that the comparison result of the second coverage distance and the third distance corresponding to the neighbor cell N2 satisfies the second preset condition. Thus, in this case, the computing device may then determine neighbor N2 as the first neighbor.

The sum of the ON3 and the distance margin value (22.2 meters) is greater than OB1 (16 meters), and the computing device may determine that the comparison result of the first coverage distance and the third distance corresponding to the neighbor N3 does not satisfy the first preset condition. The sum of the ON3 and the distance margin value (11.2 meters) is greater than OB2 (6 meters) by 0.5 times, and the computing device may determine that the comparison result of the second coverage distance and the third distance corresponding to the neighbor cell N3 satisfies the second preset condition. Thus, in this case, the computing device may in turn determine neighbor N3 as the first neighbor.

It should be noted that the distance margin value may be set by the computing device according to the actual situation. For example, the computing device sets the distance margin value to 0.5 meters.

S502, the computing equipment determines an antenna downtilt angle evaluation coefficient of the cell to be evaluated according to the number of the adjacent cells of the first adjacent cell.

The antenna downtilt angle evaluation coefficient is the ratio of the number of adjacent cells of the first adjacent cell to the number of adjacent cells of at least one adjacent cell.

In a possible implementation manner, the specific implementation process of S502 may be: the computing device may learn the first neighboring cell through the step S501, determine the number of neighboring cells of the first neighboring cell and the number of neighboring cells of the at least one neighboring cell, and determine an antenna downtilt angle evaluation coefficient of the cell to be evaluated according to a ratio of the number of neighboring cells of the first neighboring cell to the number of neighboring cells of the at least one neighboring cell.

As can be seen in conjunction with the example of fig. 4, three neighboring cells (i.e., the neighboring cell N1, the neighboring cell N2, and the neighboring cell N3) in the at least one neighboring cell satisfy the preset condition, the computing device may determine that the neighboring cell N1, the neighboring cell N2, and the neighboring cell N3 are all first neighboring cells, and further determine that the number of neighboring cells of the first neighboring cell is 3; the number of the adjacent cells of at least one adjacent cell is 3. In this case, the computing device may determine that the antenna downtilt estimation coefficient of the cell under evaluation is 100%.

S503, the computing equipment judges that the antenna downtilt angle evaluation coefficient is larger than a preset threshold value.

It should be noted that, the computing device may set the preset threshold according to the actual situation. For example, the computing device sets the preset threshold to 50%.

If so, the computing device executes S504.

And S504, the computing equipment determines that the antenna downtilt angle setting of the cell to be evaluated is unreasonable.

For example, if the preset threshold is set to 50%, the antenna downtilt angle evaluation coefficient of the cell to be evaluated is 100%, and the computing device determines that the antenna downtilt angle of the cell to be evaluated is not reasonably set.

If not, the computing device executes S505.

And S505, the computing equipment determines that the antenna downtilt angle of the cell to be evaluated is reasonable.

For example, if the preset threshold is set to 50%, the antenna downtilt angle evaluation coefficient of the cell to be evaluated is 30%, and the computing device determines that the antenna downtilt angle of the cell to be evaluated is set reasonably.

The application provides an antenna downtilt angle assessment method, wherein a computing device determines a first coverage distance, a second coverage distance and at least one third coverage distance of a cell to be assessed, and by judging the length relation among the first coverage distance, the second coverage distance and the at least one third coverage distance, whether the coverage area of the cell to be assessed is within a reasonable range for each of the at least one neighbor cell can be determined. If the length relation among the first coverage distance, the second coverage distance and the third distance meets a preset condition, the computing equipment can determine that the coverage area of the cell to be evaluated is reasonable for the neighboring cell corresponding to the third distance; if the length relation among the first coverage distance, the second coverage distance and the third distance meets the non-preset condition, the computing device can determine that the coverage non-range of the cell to be evaluated is reasonable for the neighbor cell corresponding to the third distance, and further determine that the neighbor cell corresponding to the third distance is the first neighbor cell. And by comparing the length relation between the first coverage distance, the second coverage distance and the third distance of each adjacent cell in at least one adjacent cell, the computing equipment can determine the number of the first adjacent cells in the at least one cell, further determine that the ratio of the number of the first adjacent cells to the number of the at least one adjacent cell is the coefficient to be evaluated of the antenna downtilt angle, and determine whether the antenna downtilt angle of the cell to be evaluated is reasonable or not by comparing the coefficient to be evaluated of the antenna downtilt angle with the magnitude relation of a preset threshold. The computing equipment can accurately and quickly evaluate whether the antenna downtilt angle is unreasonably set, and the problem caused by manual survey is avoided.

Fig. 3 and 5 above describe the process by which the computing device evaluates whether the antenna downtilt of the cell under evaluation is reasonable.

In the process that the computing device evaluates whether the antenna downtilt of the cell under evaluation is reasonable, the computing device needs to determine the first coverage distance and the second coverage distance (i.e. S301 described above). Referring to fig. 3, as shown in fig. 6, the specific process of S301 described above may be implemented by the following S601 to S602.

S601, the computing device determines an antenna hanging height, an antenna downtilt angle, and a vertical half-power angle of the cell under evaluation.

The vertical half-power angle includes an upper vertical half-power angle and a lower vertical half-power angle. Wherein the upper vertical half-power angle is equal to 0.5 times the vertical half-power angle; the lower vertical half-power angle is equal to 0.5 times the vertical half-power angle.

It should be noted that the vertical half-power angle may be set by the computing device according to the actual situation. For example, the computing device sets the vertical half-power angle to 7 °. Correspondingly, the upper vertical half power angle is 3.5 degrees; the lower vertical half power angle is 3.5 °.

Illustratively, as shown in FIG. 4, the lower vertical half-power angle may be θ3 in FIG. 4; the upper vertical half-power angle may be θ2 in fig. 4; the vertical half-power angle may be θ6 in fig. 4; i.e., lower side vertical half power angle θ3=upper side vertical half power angle θ2=0.5×vertical half power angle θ6. The antenna downtilt angle may be θ1 in fig. 4.

The computing device may determine a first preset angle θ4 (i.e., θ4=θ1- θ2) from the antenna downtilt angle θ1 and the upper vertical half-power angle θ2. The computing device may also determine a second preset angle θ5 (i.e., θ5=θ1+θ3) from the antenna downtilt angle θ1 and the underside vertical half-power angle θ3.

It should be noted that the antenna hook height, the antenna downtilt angle, and the vertical half power angle may be obtained from the industrial parameter data.

S602, the computing device determines a first coverage distance and a second coverage distance according to the antenna hanging height, the antenna downward inclination angle and the vertical half power angle.

In one possible implementation, the first coverage distance satisfies the following equation 1:

obu=oa/tan (θ -0.5×Φ) equation 1

The second coverage distance satisfies the following equation 2:

OBd =oa/tan (θ+0.5xΦ) equation 2

Wherein OBd is the second coverage distance.

The application provides an antenna downtilt angle assessment method, wherein a computing device can respectively determine a first coverage distance and a second coverage distance through antenna hanging height, antenna downtilt angle and vertical half-power angle, and provide data preparation for determining whether the length relation among the first coverage distance, the second coverage distance and at least one third distance meets preset conditions or not.

FIG. 6 above describes a process by which a computing device determines a first coverage distance and a second coverage distance.

Before the computing device determines the at least one third distance, the computing device also needs to determine at least one neighbor of the cell under evaluation, providing data preparation for determining the at least one third distance in S302 above. As shown in fig. 7, the process of the computing device determining at least one neighbor of the cell under evaluation may be implemented by the following S701-S704.

And S701, the computing equipment determines the neighbor search angle and the neighbor search radius of the cell to be evaluated.

And determining the neighbor cell search angle according to the number of sectors of the cell to be evaluated. The neighbor search radius is an average of the plurality of fourth distances. The fourth distance is the distance between any one of the plurality of neighbors of the cell to be evaluated and the cell to be evaluated.

In one possible implementation, the neighbor search angle may satisfy the following equation 3:

m=360/n+ext_angle formula 3

Wherein M is a neighbor search angle; n is the number of sectors; ext_angle is the expansion angle threshold.

It should be noted that the expansion angle threshold (i.e., ext_angle) may be set by the computing device according to the actual situation. For example, the computing device sets the expansion angle threshold to 20.

For example, if the number of sectors is 6 and the expansion angle threshold is set to 20, the computing device may determine that the neighbor search angle is 80 ° (i.e., 360/6+20=80).

For another example, if the number of sectors is 3 and the expansion angle threshold is set to 20, the computing device may determine that the neighbor search angle is 140 ° (i.e., 360/3+20=140).

It should be noted that the above-mentioned plurality of neighboring cells may be all neighboring cells of the cell to be evaluated; but also part of the neighbors of the cell to be evaluated. The number of the plurality of neighboring cells can be set by the computing device according to practical situations, and the application is not limited in any way.

S702, the computing equipment determines a preset neighbor search range according to the neighbor search angle and the neighbor search radius.

Illustratively, as shown in fig. 8, the neighbor search angle is P in fig. 8, and the neighbor search radius is R in fig. 8. In this case, the computing device may determine the sector area S1 consisting of the neighbor search angle P and the neighbor search radius R in fig. 8 as the preset neighbor search range of the present application.

And S703, the computing equipment determines that the neighbor cell in the preset neighbor cell search range in the plurality of neighbor cells is a second neighbor cell.

For example, as shown in fig. 8, the computing device may determine neighbor N4, neighbor N5, and neighbor N6 within a preset neighbor search range (i.e., preset neighbor search range S1 in fig. 8) as the second neighbor.

S704, the computing device determines at least one neighbor cell from the second neighbor cells.

Wherein, when the number of the second adjacent cells is less than or equal to L, the second adjacent cells are at least one adjacent cell; when the number of the second adjacent cells is larger than L, the first L adjacent cells with the smallest fourth distance in the second adjacent cells are at least one adjacent cell; wherein L is a positive integer.

For example, in the case where L is 3, if the number of neighbors (i.e., second neighbors) within the preset neighbor search range is 2, the computing device may determine that two neighbors (i.e., second neighbors) within the preset neighbor search range are at least one neighbor.

For another example, in the case where L is 3, if the number of neighbors (i.e., the second neighbors) in the preset neighbor search range is 5, the computing device may need to rank the 5 neighbors from small to large according to the fourth distance, so as to determine that the first 3 neighbors with the smallest fourth distance are at least one neighbor.

The application provides an antenna downtilt angle evaluation method, wherein a computing device determines a preset neighbor search range through a neighbor search angle and a neighbor search radius of a cell to be evaluated, determines that a neighbor in the preset neighbor search range is a second neighbor, and if the number of the second neighbors is within the preset range, the computing device determines that the second neighbor is at least one neighbor; if the number of the second adjacent cells is not in the preset range, the computing equipment determines that the first L adjacent cells with the smallest fourth distance are at least one adjacent cell from the second adjacent cells. In this way, the computing device may determine at least one neighbor of the cell under evaluation, providing data preparation for a subsequent determination of at least one third distance.

It should be noted that the antenna downtilt angle evaluation method provided in the embodiment of the present application may be applicable to urban, county, rural and other surface/line coverage scenarios.

It should be noted that the above-mentioned cell to be evaluated and a plurality of neighboring cells of the cell to be evaluated may be outdoor cells (the outdoor cells do not include the high-speed rail cells).

It is understood that the antenna downtilt angle estimation method described above may be implemented by an antenna downtilt angle estimation device. In order to realize the functions, the antenna downtilt angle evaluation device comprises a hardware structure and/or a software module corresponding to each function. Those of skill in the art will readily appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments.

The embodiment of the disclosure may divide the functional modules according to the antenna downtilt angle evaluation device generated by the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment disclosed in the present application, the division of the modules is merely a logic function division, and other division manners may be implemented in actual practice.

Fig. 9 is a schematic structural diagram of an antenna downtilt estimation device according to an embodiment of the present invention. As shown in fig. 9, the antenna downtilt angle evaluation device 90 may be used to perform the antenna downtilt angle evaluation methods shown in fig. 3, 5-7. The antenna downtilt evaluation apparatus 90 includes a processing unit 901. Optionally, the antenna downtilt evaluation device 90 may further comprise a communication unit 902.

A processing unit 901, configured to determine a first coverage distance and a second coverage distance of a cell to be evaluated; the first coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at the first preset angle and the ground and the cell to be evaluated; the first preset angle is the difference between the antenna downtilt angle and the upper vertical half-power angle of the cell to be evaluated; the second coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at the second preset angle and the ground and the cell to be evaluated; the second preset angle is the sum of the antenna downtilt angle and the lower vertical half power angle.

A processing unit 901, further configured to determine at least one third distance; any one of the at least one third distance is a distance between any one of the at least one neighbor of the cell under evaluation and the cell under evaluation.

The processing unit 901 is further configured to determine whether an antenna downtilt angle of the cell to be evaluated is reasonable according to at least one of a comparison result of the first coverage distance and the at least one third distance, and a comparison result of the second coverage distance and the at least one third distance.

In one possible implementation, the processing unit 901 is specifically configured to: determining a first neighbor cell from the at least one neighbor cell; the comparison result of the first coverage distance and the third distance corresponding to the first adjacent cell meets a first preset condition, and the comparison result of the second coverage distance and the third distance corresponding to the first adjacent cell meets a second preset condition; determining an antenna downtilt angle evaluation coefficient of a cell to be evaluated according to the number of adjacent cells of the first adjacent cell; the antenna downtilt angle evaluation coefficient is the ratio of the number of adjacent cells of the first adjacent cell to the number of adjacent cells of at least one adjacent cell; under the condition that the antenna downtilt angle evaluation coefficient is larger than a preset threshold value, determining that the antenna downtilt angle setting of the cell to be evaluated is unreasonable; and under the condition that the antenna downtilt angle evaluation coefficient is smaller than or equal to a preset threshold value, determining that the antenna downtilt angle of the cell to be evaluated is reasonable in arrangement.

In one possible implementation, the processing unit 901 is specifically configured to: determining antenna hanging height, antenna downward inclination angle and vertical half power angle of a cell to be evaluated; and determining a first coverage distance and a second coverage distance according to the antenna hanging height, the antenna downward inclination angle and the vertical half power angle.

OBu＝OA/tan(θ-0.5×φ)

OBd＝OA/tan(θ+0.5×φ)

wherein OBd is the second coverage distance.

In one possible implementation, the processing unit 901 is further configured to: determining a neighbor search angle and a neighbor search radius of a cell to be evaluated; the neighbor cell search angle is determined according to the number of sectors of the cell to be evaluated; the neighbor cell searching radius is an average value of a plurality of fourth distances; the fourth distance is the distance between any one of a plurality of adjacent cells of the cell to be evaluated and the cell to be evaluated; determining a preset neighbor search range according to the neighbor search angle and the neighbor search radius; determining that a neighboring cell in the preset neighboring cell search range in the plurality of neighboring cells is a second neighboring cell; determining at least one neighbor cell from the second neighbor cells; wherein, when the number of the second adjacent cells is less than or equal to L, the second adjacent cells are at least one adjacent cell; when the number of the second adjacent cells is larger than L, the first L adjacent cells with the smallest fourth distance in the second adjacent cells are at least one adjacent cell; wherein L is a positive integer.

In the case of implementing the functions of the integrated module in the form of hardware, the embodiment of the present invention provides another possible structural schematic diagram of the antenna downtilt estimation device related to the above embodiment.

In one design, in the antenna downtilt angle evaluation device provided by the embodiment of the present invention, the communication interface may also be integrated in the processor.

Fig. 10 shows another hardware configuration of the antenna downtilt estimation device in the embodiment of the present invention. As shown in fig. 10, the antenna downtilt estimation device 100 may include a processor 1001. Optionally, the antenna downtilt evaluation apparatus 100 may further comprise a communication interface 1002. The processor 1001 is coupled to a communication interface 1002.

The function of the processor 1001 may be as described above with reference to the processor 1001. The processor 1001 also has a memory function.

Optionally, a communication interface 1002 is used to provide data to the processor 1001. The communication interface 1002 may be an internal interface of the communication device or an external interface of the communication device.

It is to be noted that the structure shown in fig. 10 does not constitute a limitation of the antenna downtilt evaluation apparatus 100, and the antenna downtilt evaluation apparatus 100 may include more or less components than those shown in fig. 10, or may combine some components, or may be arranged differently.

From the above description of embodiments, it will be apparent to those skilled in the art that the foregoing functional unit divisions are merely illustrative for convenience and brevity of description. In practical applications, the above-mentioned function allocation may be performed by different functional units, i.e. the internal structure of the device is divided into different functional units, as needed, to perform all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.

The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores instructions, when the computer executes the instructions, the computer executes each step in the method flow shown in the method embodiment.

Embodiments of the present invention provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of determining rich media of the method embodiments described above.

The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: electrical connections having one or more wires, portable computer diskette, hard disk. Random access Memory (Random Access Memory, RAM), read-Only Memory (ROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), registers, hard disk, optical fiber, portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any other form of computer-readable storage medium suitable for use by a person or persons of skill in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuit, ASIC). In embodiments of the present invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

Since the apparatus, device, computer readable storage medium, and computer program product in the embodiments of the present invention can be applied to the above-mentioned method, the technical effects that can be obtained by the apparatus, device, computer readable storage medium, and computer program product can also refer to the above-mentioned method embodiments, and the embodiments of the present invention are not described herein again.

The present invention is not limited to the above embodiments, and any changes or substitutions within the technical scope of the present invention should be covered by the scope of the present invention.

Claims

1. An antenna downtilt angle evaluation method, comprising:

determining a first coverage distance and a second coverage distance of a cell to be evaluated; the first coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at a first preset angle and the ground and the cell to be evaluated; the first preset angle is the difference between the antenna downtilt angle and the upper vertical half-power angle of the cell to be evaluated; the second coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at a second preset angle and the ground and the cell to be evaluated; the second preset angle is the sum of the antenna downward inclination angle and the lower vertical half power angle;

Determining at least one third distance; any one of the at least one third distance is a distance between any one of at least one neighbor cell of the cell under evaluation and the cell under evaluation;

determining a first neighbor cell from the at least one neighbor cell; the comparison result of the first coverage distance and the third distance corresponding to the first adjacent cell meets a first preset condition, and the comparison result of the second coverage distance and the third distance corresponding to the first adjacent cell meets a second preset condition;

determining an antenna downtilt angle evaluation coefficient of the cell to be evaluated according to the number of adjacent cells of the first adjacent cell; the antenna downtilt angle evaluation coefficient is the ratio of the number of adjacent cells of the first adjacent cell to the number of adjacent cells of the at least one adjacent cell;

under the condition that the antenna downtilt angle evaluation coefficient is larger than a preset threshold value, determining that the antenna downtilt angle of the cell to be evaluated is unreasonable;

and under the condition that the antenna downtilt angle evaluation coefficient is smaller than or equal to the preset threshold value, determining that the antenna downtilt angle of the cell to be evaluated is reasonable in arrangement.

2. The method of claim 1, wherein the first preset condition comprises: the sum of the third distance corresponding to the first neighbor cell and the distance residual value is smaller than or equal to the first coverage distance; the second preset condition includes: and the sum of the third distance corresponding to the first adjacent cell and the distance residual value which is 0.5 times is larger than or equal to the second coverage distance.

3. The method of claim 1, wherein the determining the first coverage distance and the second coverage distance of the cell under evaluation comprises:

determining antenna hanging height, antenna downward inclination angle and vertical half power angle of the cell to be evaluated;

and determining the first coverage distance and the second coverage distance according to the antenna hanging height, the antenna downward inclination angle and the vertical half power angle.

4. A method according to claim 3, wherein the first coverage distance satisfies the following formula:

OBu＝OA/tan(θ-0.5×φ)

wherein said OBu is said first coverage distance; the OA is the antenna hanging height; the theta is the downward inclination angle of the antenna; the phi is the vertical half power angle.

5. The method of claim 4, wherein the second coverage distance satisfies the following equation:

OBd＝OA/tan(θ+0.5×φ)

wherein OBd is the second coverage distance.

6. The method according to any one of claims 1-4, wherein prior to said determining at least one third distance, the method further comprises:

determining a neighbor search angle and a neighbor search radius of the cell to be evaluated; the neighbor cell search angle is determined according to the number of sectors of the cell to be evaluated; the neighbor cell searching radius is an average value of a plurality of fourth distances; the fourth distance is the distance between any one of a plurality of adjacent cells of the cell to be evaluated and the cell to be evaluated;

Determining a preset neighbor search range according to the neighbor search angle and the neighbor search radius;

determining that a neighboring cell located in the preset neighboring cell searching range in the plurality of neighboring cells is a second neighboring cell;

determining the at least one neighbor cell from the second neighbor cells; wherein, when the number of the second neighboring cells is less than or equal to L, the second neighboring cells are the at least one neighboring cell; when the number of the second neighboring cells is greater than L, the first L neighboring cells with the smallest fourth distance in the second neighboring cells are the at least one neighboring cell; wherein L is a positive integer.

7. An antenna downtilt evaluation apparatus, comprising: a processing unit;

the processing unit is used for determining a first coverage distance and a second coverage distance of the cell to be evaluated; the first coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at a first preset angle and the ground and the cell to be evaluated; the first preset angle is the difference between the antenna downtilt angle and the upper vertical half-power angle of the cell to be evaluated; the second coverage distance is the distance between the intersection point of the signal sent by the cell to be evaluated at a second preset angle and the ground and the cell to be evaluated; the second preset angle is the sum of the antenna downward inclination angle and the lower vertical half power angle;

The processing unit is further configured to determine at least one third distance; any one of the at least one third distance is a distance between any one of at least one neighbor cell of the cell under evaluation and the cell under evaluation;

the processing unit is further configured to determine a first neighboring cell from the at least one neighboring cell; the comparison result of the first coverage distance and the third distance corresponding to the first adjacent cell meets a first preset condition, and the comparison result of the second coverage distance and the third distance corresponding to the first adjacent cell meets a second preset condition;

the processing unit is further configured to determine an antenna downtilt angle evaluation coefficient of the cell to be evaluated according to the number of neighboring cells of the first neighboring cell; the antenna downtilt angle evaluation coefficient is the ratio of the number of adjacent cells of the first adjacent cell to the number of adjacent cells of the at least one adjacent cell;

the processing unit is further configured to determine that the antenna downtilt setting of the cell to be evaluated is unreasonable when the antenna downtilt evaluation coefficient is greater than a preset threshold;

and under the condition that the antenna downtilt angle evaluation coefficient is smaller than or equal to the preset threshold value, the processing unit is further used for determining that the antenna downtilt angle of the cell to be evaluated is reasonable in arrangement.

8. The apparatus of claim 7, wherein the first preset condition comprises: the sum of the third distance corresponding to the first neighbor cell and the distance residual value is smaller than or equal to the first coverage distance; the second preset condition includes: and the sum of the third distance corresponding to the first adjacent cell and the distance residual value which is 0.5 times is larger than or equal to the second coverage distance.

9. The apparatus according to claim 7, wherein the processing unit is specifically configured to:

10. The apparatus of claim 9, wherein the first coverage distance satisfies the following equation:

OBu＝OA/tan(θ-0.5×φ)

11. The apparatus of claim 10, wherein the second coverage distance satisfies the following equation:

OBd＝OA/tan(θ+0.5×φ)

Wherein OBd is the second coverage distance.

12. The apparatus according to any one of claims 7-11, wherein the processing unit is further configured to:

13. An antenna downtilt evaluation apparatus, comprising: a processor and a communication interface; the communication interface is coupled to the processor for running a computer program or instructions to implement the antenna downtilt angle assessment method as claimed in any one of claims 1-6.

14. A computer-readable storage medium having instructions stored therein, characterized in that when executed by a computer, the computer performs the antenna downtilt angle evaluation method of any one of the preceding claims 1-6.