KR102057290B1 - Method and apparatus for estimating antenna orientation of base station - Google Patents

Abstract

The present invention relates to an antenna direction estimating method and apparatus for measuring antenna directions of a plurality of base stations constructed in a mobile communication network in real time. The present invention relates to a base station based on measured data on signal strength information including location information for each base station. It is possible to accurately predict the actual direction of the antenna to be installed, and to collect the signal strength information including the position information through an application server providing a location-based service, it is intended to estimate the antenna direction angle without adding a large cost.

Description

Method and apparatus for estimating antenna orientation angle {Method and apparatus for estimating antenna orientation of base station}

The present invention relates to a method and apparatus for estimating antenna direction angle, and more particularly, to an antenna direction capable of accurately predicting an actual direction direction of an antenna installed in a base station based on measured data on electric field strength including position information. It relates to each estimation method and apparatus.

Mobile telecommunication refers to a communication technology in which mobility is provided so that a user may communicate voice, video, data, etc. regardless of a place through a terminal device.

The mobile communication is a network directly connected to a subscriber's terminal device for mobility, and includes a plurality of access networks that perform functions such as subscriber number processing, service connection, and transmission and reception of information, and access. It is composed of a core network that manages the entire network while connecting the networks.

The access network is implemented through a base station, which is a wireless communication facility installed in a service providing area and connecting a mobile communication network and a terminal device.

In particular, in mobile communication, in order to use the limited frequency resources more efficiently, a large area is divided into small cells, and a base station located in the middle of the cell provides a service using a specific frequency, and the same frequency is reused again by a base station farther away. By increasing the frequency utilization efficiency.

In this case, coverage, which is a range in which one base station can transmit and receive information with a terminal, is determined by the antenna direction angle and the radio transmission strength.

Therefore, the direction angle and tilting angle of the base station antennas are a major factor in predicting the current wireless network quality and the quality after optimization. When accurately predicting the direction of the antenna in a mobile communication network, it is possible to accurately predict the quality change that occurs when the direction is different from the original direction, and more specifically, the weak electric field generating area, which is related to wireless network quality management such as new base station installation and base station relocation. It can be used effectively.

However, the direction angle and tilting angle information of the antenna can be obtained when the antenna is first installed, and if it is changed for optimization, it must be confirmed by re-measurement in the field. Among these, the antenna tilting angle can be remotely controlled and managed through RET (Remote Electric Tilting), but the direction angle is changed manually in most antennas. This is necessary, which leads to an increase in operating costs. In particular, in the LTE system, since the number of antennas is very large due to the use of various frequencies, the management cost for checking the antenna direction angle becomes larger.

In this regard, a technique for measuring the direction angle of the antenna by attaching a geomagnetic sensor and an RFID (Radio-Frequency Identification) to measure the azimuth angle to the antenna device has been proposed, but it is possible to measure the direction angle to each antenna There is a problem in that the cost is added because the additional equipment must be attached.

Registered Korean Patent No. 10-1325437, Oct. 29, 2013 (Name: Short-range wireless communication device and method)

Accordingly, an aspect of the present invention is to provide an antenna direction estimation method and apparatus capable of measuring antenna directions of a plurality of base stations constructed in a mobile communication network in real time.

In particular, the present invention can accurately predict the direction of the direction of the antenna actually installed on the base station based on the measured data on the signal strength information including the location information for each base station, through an application server that provides location-based services By collecting signal strength information including the position information, it is an object of the present invention to provide an antenna direction angle estimation method and apparatus capable of estimating the antenna direction angle without adding a large cost.

As a solution to the above problem, the present invention provides a method for estimating the antenna direction angle of a base station wirelessly transmitting and receiving with at least one terminal device.

According to an aspect of the present invention, there is provided a method of estimating an antenna direction angle, comprising: collecting location information of a terminal device and signal strength information of a received signal of the terminal device from at least one terminal device connected to the base station; Correcting the signal strength information in consideration of a path loss between the terminal device and the base station; Calculating a direction angle for each signal strength information by using location information of each terminal device and location information of the base station; And estimating the antenna direction angle of the base station by comparing the signal strength for each direction based on the signal strength information.

In the antenna direction angle estimation method according to the present invention, the collecting step, the location information of the terminal device from the plurality of terminal devices, the identification of the base station connected to the terminal device through the application server performing the location-based service Collecting information and signal strength information on a received signal received from the accessed base station by the corresponding terminal device; And classifying the collected signal strength information and location information for each base station based on the identification information of the base station.

In addition, the antenna direction angle estimation method according to the present invention, before the step of estimating the antenna direction angle, to determine whether the number of location information and signal strength information of the terminal device collected for the base station is more than a predetermined threshold value; The method may further include estimating the antenna direction when the threshold is greater than or equal to a preset threshold.

In addition, the antenna direction angle estimation method according to the present invention further comprises the step of checking the antenna branch information of the base station, and in the step of estimating the antenna direction angle, the number of antenna directions corresponding to the antenna branch information It can be estimated.

In the method of estimating the antenna direction angle according to the present invention, estimating the antenna direction may include extracting one or more direction angles in order of increasing signal strength, estimating the direction of the antenna, or a signal having a predetermined threshold value or more. One or more direction angles having strength may be estimated as the direction angles of the antennas.

In addition, the present invention provides a solution to the above-described problem, an information collection unit for collecting the position information of the terminal device and the signal strength information of the received signal of the terminal device from one or more terminal devices connected to the base station; The collected signal strength information is corrected in consideration of the path loss between the corresponding terminal device and the base station, and after calculating a direction angle for each signal strength information using the location information of each terminal device and the location information of the base station, An information analyzer for estimating the antenna direction angle of the base station by comparing signal strength information for each direction angle; And a storage unit for storing location information and signal strength information of the terminal device for each base station processed by the information collector and the information analyzer.

In the antenna direction angle estimation apparatus according to the present invention, the information collecting unit, the location information of the terminal device from the plurality of terminal devices, the identification information of the base station connected to the terminal device through the application server performing the location-based service, The terminal device collects signal strength information on the received signal received from the accessed base station, and classifies the collected signal strength information and location information for each base station based on the identification information of the base station.

The information analyzer may determine whether the number of the collected location information and the signal strength information of the terminal device is greater than or equal to a preset threshold, and estimate the antenna direction when the information is greater than or equal to a preset threshold.

The information analyzer may further check antenna branch information of the base station to estimate antenna directions corresponding to the antenna branch information, and when estimating the direction angle, one or more directions in order of signal strength information in greater order. The angle may be extracted and estimated as the direction angle of the antenna, or one or more direction angles having a signal strength of a predetermined threshold or more may be estimated as the direction angle of the antenna.

Through the above-described solutions, the present invention collects the signal strength information for the base station signal including the location information, and extracts the signal strength for each direction using the location information of the base station and the location information, the base station antenna is directed The direction angle can be predicted periodically without a site visit, and as a result, it is possible to reduce operating costs by reducing site visits for setting information management during base station operation.

Particularly, in the present invention, in collecting signal strength information including the location information, by using an application server currently serving location-based services, it is possible to periodically collect radio environment information for each base station without additional cost without additional equipment or additional cost. It has an effect.

In addition, the present invention can collect signal strength information including a large number of location information from the unspecified terminal using the location-based service through the application server, thereby further increasing the reliability and accuracy of the antenna direction angle predicted It can increase.

1 is a diagram illustrating a schematic structure of a mobile communication system to which the present invention is applied.
2 is a block diagram showing the configuration of the antenna direction angle estimation apparatus according to the present invention.
3 and 4 are flowcharts for explaining an antenna direction angle estimation method according to the present invention.
5 is a graph illustrating a result of disposing signal strength information including position information for each direction angle in the antenna direction angle estimation method according to the present invention.
6 is a graph illustrating a result of correcting signal strength information including position information in consideration of path loss and a direction angle prediction result in the antenna direction angle estimation method according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in the following description and the accompanying drawings, detailed descriptions of well-known functions or configurations that may obscure the subject matter of the present invention will be omitted. In addition, it should be noted that like elements are denoted by the same reference numerals as much as possible throughout the drawings.

The terms or words used in the specification and claims described below should not be construed as being limited to ordinary or dictionary meanings, and the inventors are appropriate as concepts of terms for explaining their own invention in the best way. It should be interpreted as meanings and concepts in accordance with the technical spirit of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all of the technical ideas of the present invention, and various alternatives may be substituted at the time of the present application. It should be understood that there may be equivalents and variations.

In addition, terms including ordinal numbers, such as first and second, are used to describe various components, and are used only to distinguish one component from another component, and to limit the components. Not used. For example, without departing from the scope of the present invention, the second component may be referred to as the first component, and similarly, the first component may also be referred to as the second component.

In addition, when a component is referred to as being "connected" or "connected" to another component, it means that it may be connected or connected logically or physically. In other words, although a component may be directly connected or connected to other components, it should be understood that other components may exist in the middle, and may be connected or connected indirectly.

In addition, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In addition, the terms "comprises" or "having" described herein are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or the same. It is to be understood that the present invention does not exclude in advance the possibility of the presence or the addition of other features, numbers, steps, operations, components, parts, or a combination thereof.

The antenna direction angle estimation method and apparatus according to the present invention are applicable to a network system including one or more access networks for performing wireless communication, such as a mobile communication system. Will be explained.

1 is a diagram illustrating a schematic structure of a mobile communication system to which the present invention is applied.

As shown in FIG. 1, a mobile communication system is a network to which a terminal device 10 of a subscriber is directly connected, and includes a plurality of access networks that perform functions such as subscriber number processing, service connection, and transmission and reception of information. 20) and a core network 30 that collectively manages the entire network while connecting the plurality of access networks 20.

Each of the plurality of access networks 20 is connected to the terminal device 10 through a base station 20a installed in a corresponding cell to perform wireless communication, and the size and shape of service coverage of each access network 20 is performed. Depends on the position of the base station 20a, the direction angle of the antenna (not shown) installed in the base station 20a, and the power of the radio signal transmitted through the antenna.

Therefore, when constructing a mobile communication network, the direction angle and transmission power of the antenna should be determined in consideration of various factors such as the location of the base stations 20a, the geographical / territorial environment around the base station 20a, and the distance between the base stations 20a.

 In this regard, the mobile communication system, the network design and optimization device 50 for setting and managing the layout of the base station 20a, the direction angle of the antenna for each base station 20a, the radio transmission power for the optimized network construction It can be provided. The network design and optimization device 50 may be connected to the core network 30 and used by a network manager or an operator.

In addition, the network designing and optimizing apparatus 50 sets information on the pre-built base stations 20a, more specifically, the location of the base station 20a, base station antenna information (antenna branch information, antenna direction angle information, etc.). And manage.

However, the antenna direction angle of each base station 20a may be different from the antenna direction angle information set in the network design and optimization device 50 during the actual network installation or operation.

Accordingly, the present invention collects signal strength information indicating reception sensitivity for each position in a cell through the unspecified terminal device 10 connected to the base station 20a and transmitting and receiving signals with the base station 20a. Based on the analysis of the propagation environment information of the base station 20a to periodically predict the direction of the antenna installed in the base station 20a, the antenna direction angle prediction principle according to the present invention is as follows.

Link budget is a link design of a wireless communication system, which is designed to predict and calculate various elements of a transmitter, a transmission medium, a receiver, a sensitivity, a gain, a noise figure, a margin, and the like to obtain a target line quality. In this way, it is possible to know the signal strength to be received at the receiving side, and it is possible to predict whether coverage can be secured by comparing the calculated received signal strength with the receiving sensitivity.

The received signal strength may be expressed as a value obtained by subtracting a loss occurring during transmission and reception from the sum of gains during transmission and reception of the strength (transmission power) during transmission as shown in Equation 1 below.

In Equation 1, gain and loss are more specifically expressed as Equation 2.

Here, the transmission power has the same value regardless of the direction angle of the antenna, the reception antenna gain is a value independent of the antenna direction, and the transmission feeder / connector loss is a loss in the feeder and connector connected to the antenna. Regardless of the direction, the same value is used, and the loss of the receiving feeder / connector is a loss appearing on the terminal device 10 side. Since the distance between the antenna and the circuit in the terminal device 10 is very short, the loss is almost zero. Finally, the additional loss represents a loss not considered in the path loss and is independent of the antenna direction angle.

Therefore, Equation 2 may be summarized as Equation 3 below by combining gains and losses irrelevant to the antenna direction angles.

Here, the transmission antenna gain is a value determined according to the radiation pattern inherent in the antenna, and has a gain different according to the direction angle. In addition, the sum of gain and loss independent of the antenna direction angle is represented by a constant value.

That is, it can be seen that the direction angle at which the transmit antenna gain is the maximum is the direction angle toward the main beam of the antenna, and the value obtained by adding the path loss to the signal strength of the signal received at the receiver, that is, the terminal device 10 is It can be seen that it is proportional to the transmit antenna gain.

 Accordingly, the present invention is to obtain the direction angle of the antenna by collecting the strength of the received signal for each direction angle, by comparing the sum of the path loss sum.

Reference numeral 60 of FIG. 1 denotes an antenna direction angle estimator for predicting the direction angle of an antenna by collecting the strength of a received signal for each direction angle and comparing the sum of the path losses.

The antenna direction angle estimator 60 according to the present invention indicates a reception sensitivity for each position in a cell through an unspecified number of terminal devices 10 connected to the base station 20a and transmitting and receiving signals with the base station 20a. The signal strength information is collected and based on this, the propagation environment information of the base station 20a is analyzed to periodically predict the direction angle of the antenna installed in the base station 20a.

The antenna direction angle estimating apparatus 60 according to the present invention is a signal strength for a received signal measured from a plurality of terminal devices 10 connected to the applied network, more specifically, the core network 30 and connected to the base station 20a. Information and location information of the terminal device 10 may be collected.

In this case, the antenna direction angle estimation apparatus 60 according to the present invention is measured from the plurality of terminal apparatuses 10 through the application server 40 that provides location-based services to the plurality of terminal apparatuses 10. Signal strength information about the received signal and location information of the terminal device 10 may be collected.

Here, the location based service (LBS) is to provide various contents or services based on location information obtained by using a mobile communication network or a global positioning system (GPS). For example, Navigation service that guides the user's location in combination with the geographic information, route from the user's current location to the destination set by the user, and traffic information service that provides traffic information based on the user's current location. And a living information service providing living information (shopping, theatre, restaurant, medical institution, etc.) around the user.

The application server 40 providing the location based service may basically acquire the location information of the terminal device 10 to provide the location based service. The location information of the terminal device 10 may be GPS information (latitude and longitude information) or location information (cell ID information, etc.) extracted from a mobile communication network.

In addition, the terminal device 10 is connected to at least one base station 20a for a mobile communication service, and transmits and receives a signal through the base station 20a, the terminal device 10 is connected to the base station ( 20a), more specifically, base station identification information (for example, a physical cell ID (PCI) that can distinguish the base station 20a) and signal strength information of a received signal for a signal transmitted from the base station 20a. For example, reference signal received power (RSRP) can be known.

Therefore, in an embodiment of the present invention, the signal strength information and the corresponding position of the received signal at a specific location of the terminal device 10 from the terminal device 10 connected to the base station 20a and using the location-based service By collecting and analyzing the position information indicating, it is intended to predict the antenna direction angle of the base station 20a.

In this case, the location information of the plurality of terminal devices 10 and the signal strength information of the received signal at the corresponding location may be received through the application server 40 providing the location-based service used by the plurality of terminal devices 10. have. This means that a plurality of terminal devices 10 using the location-based service periodically receive base station identification information for the connected base station 20a, current location information, and signal strength information for the received signal received from the base station 20a. It can be implemented by transmitting to the application server 40, the application server 40 to collect it and provide it to the antenna direction angle calculation device 60, which is without additional equipment, the terminal device 10 By periodically changing the program to transmit base station identification information, current location information, and signal strength information about the received signal received from the base station 20a to the application server 40 periodically. It can be implemented.

The antenna direction angle estimation device 60 according to the present invention may be implemented as a server device which is connected to a network and interworks with the network design and optimization device 50 and the application server 40. In this case, the antenna direction angle estimation device 60 may be built in the network designing and optimizing apparatus 50 or may be implemented as a server device integrated with the network designing and optimizing apparatus 50.

Next, the configuration and operation of the antenna direction angle estimation device 60 according to the present invention will be described in detail.

2 is a block diagram showing the configuration of the antenna direction angle estimation apparatus according to the present invention, with reference to this, will be described in detail the configuration of the apparatus for antenna direction angle estimation.

Referring to FIG. 2, the antenna direction angle estimating apparatus 60 according to the present invention may include an information collecting unit 61, an information analyzing unit 62, and a storage unit 63.

The information collecting unit 61 collects location information of one or more terminal devices 10 connected to the base station 20a and signal strength information of the received signal of the terminal device 10. The location information of the terminal device 10 and the signal strength information of the received signal of the terminal device 10 may be directly collected from the plurality of terminal devices 10, but preferably the plurality of terminal devices 10. ) Can be collected through the application server 40 that provides a location-based service in conjunction with.

At this time, the application server 40 is a base station identification information of the base station 20a to which the terminal device 10 is connected periodically from a plurality of terminal devices 10 that interoperate for providing location-based services, the terminal device 10 Location information, the terminal device 10 collects the signal strength information of the signal received from the base station 20a, and provides it to the information collecting unit 61.

In this case, the information collection unit 61 is the location information of the terminal device 10 collected through the application server 40, the base station identification information of the base station 20a connected to the terminal device 10, the terminal device When the 10 receives the signal strength information on the received signal received from the access to the base station 20a, the signal strength information and location information may be further classified based on the base station identification information. .

Next, the information analyzer 62 analyzes the signal strength information collected through the information collector 61 to predict the direction angle of the antenna installed in the base station 20a. Specifically, the collected signal strength The information is corrected in consideration of the path loss between the corresponding terminal device 10 and the base station 20a, and using the location information of each terminal device 10 and the location information of the base station 20a, the direction according to the signal strength information. After calculating the angle, the signal strength information for each direction angle is compared, and the antenna direction angle of the base station 20a is estimated. In the above, the position information of the base station 20a used for calculating the direction angle for each signal strength information may be obtained from the network design and optimization device 50.

In this case, the information analyzer 62 determines whether the number of the location information and the signal strength information of the collected terminal device 10 is greater than or equal to a preset threshold, and estimates the antenna direction when the information is greater than or equal to a preset threshold. You can do that. This is because the more data sets of the signal strength information and the location information, the higher the reliability and accuracy of the estimated antenna direction angle.

In addition, the information analyzer 62 may further check antenna branch information of the base station 20a and estimate the number of antenna directions corresponding to the antenna branch information. For reference, each base station 20a may be provided with a plurality of antennas to secure service coverage or to accommodate more subscribers. The antenna branch information is information indicating the number of antennas installed in the base station 20a and managed by the network design and optimization device 50. Accordingly, the information analyzer 62 may receive antenna branch information of the base station 20a from the network design and optimization device 50 and use the antenna branch angle estimation.

In addition, the antenna direction angle estimation in the information analyzer 62 is performed by comparing signal strength information for each direction. More specifically, the antenna direction angle extraction is performed by extracting one or more direction angles in order of increasing signal strength information. The direction angle of the antenna may be estimated, or one or more direction angles having a signal strength of a predetermined threshold or more may be estimated as the direction angle of the antenna.

The storage unit 63 stores information processed by the information collecting unit 61 and the information analyzing unit 62. Specifically, the storage unit 63 stores location information and signal strength information of the terminal device 10 for each base station 20a. do. To this end, the storage unit 63 may store the collected signal strength information and the location information of the terminal device 10 based on the base station identification information.

Next, the antenna direction angle estimation method according to the present invention performed by the antenna direction angle estimation device 60 configured as described above will be described with reference to FIGS. 3 and 4.

3 is a flowchart illustrating a method for estimating an antenna direction angle according to the present invention, and FIG. 4 illustrates a step (S110) of collecting position information and signal strength information of the terminal device 10 of the method for estimating an antenna direction angle. More specifically, the flowchart is shown.

In the antenna direction angle estimation method according to the present invention, in order to estimate the antenna direction angle of the base station 20a, first, location information of one or more terminal devices 10 connected to each base station 20a and the corresponding terminal device 10 Collects signal strength information on the received signal received from the base station 20a (S110).

In step S110, as shown in FIG. 4, the antenna direction angle estimating apparatus 60 is provided from the plurality of terminal apparatuses 10 through the application server 40 performing a location-based service. ), The base station identification information of the base station 20a to which the terminal device 10 is connected, and the signal strength information of the received signal received from the access point 20a to which the terminal device 10 is collected. After S111, the collected signal strength information and location information may be classified for each base station based on the base station identification information (S112). To this end, the terminal device 10 may install a program for extracting and transmitting the base station identification information, location information, and signal strength information, periodically or aperiodically, respectively.

Referring back to FIG. 3, the antenna direction angle estimator 60 according to the present invention uses the signal strength information collected through the step S110 in consideration of a path loss between the corresponding terminal device 10 and the base station 20a. Correct (S120).

Steps S110 and S120 may be repeatedly performed to obtain a predetermined number or more of data sets (position information and signal strength information), and as the number of data sets increases, accuracy and reliability may increase.

Therefore, in order to satisfy a certain level of accuracy and reliability, the present invention sets a threshold value for the number of data sets of the collected location information and signal strength information to check whether data sets of a threshold value or more are collected (S130). ).

When the data set for the position information and the signal strength information is accumulated above a threshold value, the direction angle estimation may be performed through the following process.

When the data set for the position information and the signal strength information is accumulated above a threshold value, the antenna direction angle estimation device 60 according to the present invention may calculate information about the base station 20a in order to calculate the direction angle for each signal strength information. In more detail, location information and antenna branch information of the base station 20a are checked (S140). Position information and antenna branch information of the base station 20a may be obtained from the network design and optimization device 50.

The antenna direction angle estimating apparatus 60 according to the present invention calculates the direction angles of the collected signal strength information by using the position information of the terminal apparatus 10 and the position information of the base station 20a. (S150). The direction angle for each signal strength information may be calculated as an angle from a preset azimuth angle (0 degrees) to a position coordinate of the terminal device 10 with the location information (coordinate) of the corresponding base station 20a as zero. , The direction angle has a range of 0 to 360 degrees.

In addition, the antenna direction angle estimating apparatus 60 according to the present invention compares the magnitudes of the signal strength information arranged for each direction angle, and estimates the antenna direction angle of the corresponding base station 20a based on the size (S160). . Here, the antenna direction angle estimation may be performed by extracting one or more direction angles in order of increasing signal strength, and estimating the extracted one or more direction angles as the antenna direction angles of the corresponding base station 20a, or by setting the signal strength above a predetermined threshold. One or more direction angles may be extracted and estimated as the antenna direction angles of the base station 20a. Here, the number of direction angles extracted based on the magnitude of the signal strength may be determined according to the antenna branch information checked in step S140. For example, when two antennas branch at the base station 20a, the number of direction angles to be extracted is two.

The direction angle estimation process according to the present invention can be more easily understood with reference to the examples of FIGS. 5 and 6.

5 is a graph illustrating a result of arranging signal strength information including position information for each direction angle in the antenna direction angle estimation method according to the present invention, in which the horizontal direction indicates the direction angle and the vertical direction indicates the signal strength. In addition, the color of each dot represents the distance between the base station 20a and the terminal device 10. In this case, the signal strength information collected by the terminal device 10 includes a path loss that appears during transmission from the base station 20a to the terminal device 10, and the path loss includes the base station 20a and the terminal device 10. It can be increased in proportion to the distance of).

Accordingly, when the path loss varies depending on the environment information including the distance between the base station 20a and the terminal device 10, the signal strength information is corrected as shown in FIG.

Each signal strength information shown in FIG. 6 is a sum of path losses, which is a value proportional to the transmission antenna gain of the base station 20a, and the direction angle P1 having the largest magnitude may be the direction angle of the antenna.

If two antennas of the base station 20a are branched, in FIG. 6, the large direction angles P1 and P2 may be extracted as the direction angles of the antennas.

The antenna direction angle estimator 60 according to the present invention can estimate the actual direction angle of the antenna installed in each base station 20a through the above-described process. 50).

The network operator or manager compares the antenna direction angle of each base station 20a estimated by the antenna direction angle estimation device 60 with the antenna direction angle of each base station 20a set in the network design and optimization device 50. If there is a difference in the direction angles, the antenna direction angles estimated by the antenna direction angle estimation device 60 are corrected to the antenna direction angles of the corresponding base station 20a, or the setting information of the network design and optimization device 50 is used. Can be updated.

The network optimization may be performed by reflecting the estimated antenna direction angle information.

The antenna direction angle estimation method according to the present invention may be implemented in software form readable by various computer means and recorded on a computer readable recording medium. Here, the recording medium may include a program command, a data file, a data structure, etc. alone or in combination. Program instructions recorded on the recording medium may be those specially designed and constructed for the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. For example, the recording medium may be magnetic media such as hard disks, floppy disks and magnetic tapes, optical disks such as Compact Disk Read Only Memory (CD-ROM), digital video disks (DVD), Magnetic-Optical Media, such as floppy disks, and hardware devices specially configured to store and execute program instructions, such as ROM, random access memory (RAM), flash memory, and the like. do. Examples of program instructions may include high-level language code that can be executed by a computer using an interpreter as well as machine code such as produced by a compiler. Such hardware devices may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

In addition, the antenna direction angle estimation apparatus 60 according to the present invention may be implemented in a distributed manner over a network, such as a server farm, or may be implemented in a single computer device.

In addition, the antenna direction angle estimation device 60 according to the present invention includes a back-end component such as, for example, a data server, or includes a middleware component such as, for example, an application server, or, for example, the user interacts with an implementation of the subject matter described herein. It can be implemented in a computing system that includes a front-end component, such as a web browser or a client computer with a graphical user interface, or any combination of one or more of such back-end, middleware or front-end components. The components of the system may be interconnected by any form or medium of digital data communication such as, for example, a communication network.

In addition, although the present specification and drawings have been described with respect to the preferred embodiments of the present invention, it is common in the technical field to which the present invention belongs that other modifications based on the technical spirit of the present invention can be carried out in the exception of the embodiments disclosed herein. It is self-evident to those who have knowledge. In addition, although specific terms are used in the specification and the drawings, they are only used in a general sense to easily explain the technical contents of the present invention and to help the understanding of the present invention, and are not intended to limit the scope of the present invention. For example, the actions recited in the claims can be performed in a different order but still achieve desirable results. As an example, the process depicted in the accompanying drawings does not necessarily require that particular depicted or sequential order to obtain desirable results. In certain implementations, multitasking and parallel processing may be advantageous.

Therefore, the scope of the present invention should be determined by the claims rather than by the embodiments described.

The present invention is applicable to a network including a base station such as a mobile communication network, and collects signal strength information on a base station signal including location information, and uses the location information of the base station and the location information to determine signal strength for each direction. By extracting, it is possible to periodically predict the direction angle of the base station antenna without a site visit, and as a result, it is possible to reduce the operating cost by reducing the site visit for setting information management during base station operation.

Particularly, in the present invention, in collecting signal strength information including the location information, by using an application server currently serving location-based services, it is possible to periodically collect radio environment information for each base station without additional cost without additional equipment or additional cost. It has an effect.

In addition, the present invention can collect signal strength information including a large number of location information from the unspecified terminal using the location-based service through the application server, thereby further increasing the reliability and accuracy of the antenna direction angle predicted It can increase.

10: terminal device 20: access network
20a: base station 30: core network
40: application server 50: network design and optimization device
60: antenna direction angle estimation device

Claims (12)

In the antenna direction angle estimation method of the base station to wirelessly transmit and receive with at least one terminal device,
Collecting location information of the terminal device and signal strength information of the received signal of the terminal device from at least one terminal device connected to the base station;
Correcting the signal strength information in consideration of a path loss between the terminal device and the base station;
Checking whether the number of location information and signal strength information of the terminal device collected for the base station is equal to or greater than a preset threshold value;
If the number is not greater than or equal to a preset threshold, repeating the collecting and correcting steps such that the number is greater than or equal to a predetermined threshold;
Calculating a direction angle for each signal strength information by using location information of each terminal device and location information of the base station when the number is greater than or equal to a preset threshold value; And
Estimating an antenna direction angle of the base station by comparing the signal strength for each direction based on the signal strength information. The method of claim 1, wherein the collecting step,
Signals for the location information of the terminal device, the identification information of the base station to which the terminal device is connected, and the received signal received from the base station to which the terminal device is connected from a plurality of terminal devices through an application server performing a location based service. Collecting intensity information; And
And classifying the collected signal strength information and location information for each base station based on the identification information of the base station. The method of claim 1,
The signal strength information is an antenna direction angle estimation method, characterized in that the RSRP (Reference Signal Received Power) value. delete The method of claim 1,
Checking antenna branch information of the base station;
And estimating the antenna direction angle comprises estimating the number of antenna directions corresponding to the antenna branch information. The method of claim 1, wherein estimating the antenna direction
And extracting one or more direction angles in order of increasing signal strength, and estimating the direction angles of the antennas. The method of claim 1, wherein estimating the antenna direction
And estimating at least one direction angle having a signal strength of a predetermined threshold value or more as a direction angle of the antenna. An information collector configured to collect location information of the terminal device and signal strength information of the received signal of the terminal device from at least one terminal device connected to the base station;
After correcting the collected signal strength information in consideration of the path loss between the terminal device and the base station, and confirming whether the number of the location information and the signal strength information of the terminal device collected for the base station is greater than or equal to a preset threshold value. If the number is greater than or equal to a preset threshold value, the direction angle for each signal strength information is calculated using the location information of each terminal device and the location information of the base station, and then the signal strength information for each direction angle is compared, and An information analyzer for estimating the antenna direction angle of the base station; And
And a storage unit for storing location information and signal strength information of the terminal device for each base station processed by the information collector and the information analyzer.
The information collecting unit and the information analyzing unit,
And if the number is not greater than or equal to a preset threshold value, further collecting the position information and the signal strength information so that the number is greater than or equal to a preset threshold value, and repeatedly correcting the collected information. Each estimation device. The method of claim 8, wherein the information collecting unit
Signals for the location information of the terminal device, the identification information of the base station to which the terminal device is connected, and the received signal received from the base station to which the terminal device is connected from a plurality of terminal devices through an application server performing a location based service. And collecting strength information and classifying the collected signal strength information and location information for each base station based on the identification information of the base station. delete The method of claim 8, wherein the information analysis unit
And checking antenna branch information of the base station to estimate antenna direction information corresponding to the antenna branch information. The method of claim 8, wherein the information analysis unit
Extracting one or more directional angles in order of increasing signal strength information, and estimating the directional angle of the antenna, or estimating one or more directional angles having a signal strength of a predetermined threshold or more as the directional angle of the antenna; Antenna direction angle estimation device.

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