KR102317562B1 - Apparatus for diagnosing base station equipment and method therefor - Google Patents

Abstract

An apparatus for diagnosing base station equipment according to an embodiment of the present invention includes a communication unit that communicates with a wireless unit including a plurality of wireless modules including a power amplifier and an antenna, and amplified through the power amplifier through the communication unit. A collecting unit that collects the intensity of the mid-frequency signal, which is the entire signal, and the intensity of the high-frequency signal amplified through the power amplifier, and the intensity of the mid-frequency signal and the intensity of the high-frequency signal to compare the intensity of the high-frequency signal to determine the state of the power amplifier and a diagnostic unit for diagnosing.

Description

Apparatus for diagnosing base station equipment and method therefor

The present invention relates to a technique for diagnosing base station equipment, and more particularly, to an apparatus capable of diagnosing base station equipment without a measuring instrument in the field, and a method therefor.

The configuration of base station equipment of 4G (Generation) and 5G will be described by comparing them. 1 is a conceptual diagram for explaining and comparing the configuration of base station equipment of 4G and 5G.

As shown in FIG. 1A , in the case of the existing 4G, the RRU (Remote Radio Unit, 2) is separated from the antenna 1 connected to the RRU (Remote Radio Unit) 2 among the base station equipment. Accordingly, the amplifier AMP of the RRU 2 and the antenna 1 outside the RRU 2 are separated. Accordingly, in order to check whether the equipment is normal or not, a measuring instrument such as a spectrum analyzer is connected to the antenna 1 port, and the normality of the amplifier (AMP) output is determined through the measuring instrument.

On the other hand, as shown in FIG. 1B , in the case of 5G, the RRU 3 is formed as one device, and includes a plurality of radio elements in the single device. Each of the plurality of radio elements (Radio Element) includes an amplifier (AMP) and an antenna. Due to the structure of the RRU 3 of 5G, it is not easy to measure whether the output is normal for each of a plurality of radio elements of the RRU 3 through a measuring instrument.

Korean Patent Laid-Open Patent No. 2016-0111829 published on September 27, 2016 (Title: Base station equipment, resource management method and data processing method)

The present invention has been proposed to solve the above-mentioned conventional problems, and an object of the present invention is to determine whether output is normal for each of a plurality of radio elements of a base station equipment, that is, a remote radio unit (RRU) without using a measuring instrument. To provide an apparatus and method for checking

An apparatus for diagnosing base station equipment according to a preferred embodiment of the present invention for achieving the above object includes a communication unit communicating with a radio unit including a plurality of radio modules including each power amplifier and an antenna, and the a collecting unit that collects the intensity of the medium-frequency signal, which is a signal before being amplified by the power amplifier through the communication unit, and the intensity of the high-frequency signal in which the medium-frequency signal is amplified through the power amplifier; and a diagnosis unit for diagnosing the state of the power amplifier by comparing the intensities.

and a storage unit for storing a power amplifier gain characteristic in which the strength of the high frequency signal is mapped to the strength of the high frequency signal when the power amplifier is in a normal state, wherein the diagnosis unit refers to the medium frequency signal strength with reference to the gain characteristic of the power amplifier It is determined whether the power amplifier is in a normal state by comparing the intensity of the signal with the intensity of the high frequency signal.

에 따라 정상인 경우의 고주파 신호의 세기를 산출하고, 전력증폭기 이득 특성과 비교하여 차이가 임계치 미만이면, 상기 전력증폭기의 이득이 정상인 것으로 진단하며, 상기 OL은 정상인 경우의 고주파 신호의 세기이고, 상기 Pmax는 상기 고주파 신호 세기의 최대값이고, 상기 mTSSI는 전송신호강도(TSSI: Transmission Signal Strength Indicator)의 최대값이고, 상기 gTSSI는 상기 전송신호강도의 계측값인 것을 특징으로 한다. The diagnosis unit

calculates the intensity of the high-frequency signal when normal according to Pmax is the maximum value of the high frequency signal strength, the mTSSI is the maximum value of a transmission signal strength (TSSI), and the gTSSI is a measured value of the transmission signal strength.

The strength of the medium frequency signal is characterized in that the transmission signal strength (TSSI: Transmission Signal Strength Indicator).

In a method for diagnosing base station equipment according to a preferred embodiment of the present invention for achieving the object as described above, a collecting unit collects the power amplifier from a radio unit including a plurality of radio modules including a power amplifier and an antenna, respectively. collecting the strength of the medium frequency signal, which is the signal before being amplified, and the strength of the high frequency signal in which the medium frequency signal is amplified through the power amplifier; diagnosing the condition of the amplifier.

In the diagnosing of the state of the power amplifier, when the power amplifier is in a normal state, the diagnosis unit refers to a power amplifier gain characteristic in which the intensity of the high frequency signal is mapped to the intensity of the medium frequency signal and the intensity of the medium frequency signal and the high frequency signal. It is characterized in that it is determined whether the power amplifier is in a normal state by comparing the signal strengths.

에 따라 정상인 경우의 고주파 신호의 세기를 산출하는 단계와, 상기 산출된 정상인 경우의 고주파 신호의 세기와 전력증폭기 이득 특성과 비교하여 차이가 임계치 미만이면, 상기 전력증폭기의 이득이 정상인 것으로 진단하는 단계를 포함하며, 상기 OL은 정상인 경우의 고주파 신호의 세기이고, 상기 Pmax는 상기 고주파 신호 세기의 최대값이고, 상기 mTSSI는 전송신호강도(TSSI: Transmission Signal Strength Indicator)의 최대값이고, 상기 gTSSI는 상기 전송신호강도의 계측값인 것을 특징으로 한다. In the step of diagnosing the state of the power amplifier, the diagnosis unit is

calculating the intensity of the high frequency signal when normal according to Including, wherein OL is the intensity of the high frequency signal in a normal case, Pmax is the maximum value of the high frequency signal strength, the mTSSI is the maximum value of the transmission signal strength (TSSI), and the gTSSI is It is characterized in that it is a measured value of the transmission signal strength.

The strength of the medium frequency signal is characterized in that the transmission signal strength (TSSI: Transmission Signal Strength Indicator).

In consideration of the difficulty in using a measuring instrument for a radio unit (DU_L or RRU: Radio Remote Unit) including a plurality of radio modules (Radio Element) including each power amplifier and antenna, the present invention , it is possible to easily diagnose the state of each power amplifier of a plurality of radio modules (Radio Element) by comparing the intensity of the medium frequency signal and the intensity of the high frequency signal passing through the power amplifier. Therefore, it is possible to easily diagnose the base station equipment in the field.

1 is a conceptual diagram for explaining and comparing the configuration of base station equipment of 4G and 5G.
2 is a diagram for explaining the configuration of a communication network according to an embodiment of the present invention.
3 is a diagram for explaining the configuration of a wireless unit according to an embodiment of the present invention.
FIG. 4 is a view for explaining a detailed configuration of a wireless structure among the wireless units of FIG. 3 .
FIG. 5 is a view for explaining a detailed configuration of a plurality of wireless modules of the wireless structure of FIG. 4 .
6 is a diagram for explaining the configuration of a diagnosis apparatus according to an embodiment of the present invention.
7 is a flowchart illustrating a method for diagnosing base station equipment according to an embodiment of the present invention.
8 is a graph for explaining a method for diagnosing base station equipment according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment in which a person of ordinary skill in the art to which the present invention pertains can easily practice the present invention will be described in detail. However, when it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the present invention in describing the operating principle of a preferred embodiment of the present invention in detail, the detailed description thereof will be omitted. This is to more clearly convey the essence of the present invention by omitting unnecessary description. In addition, the present invention can make various changes and can have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description, which is not intended to limit the present invention to specific embodiments, It should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In addition, when an element is referred to as being “connected” or “connected” to another element, it means that it is logically or physically connected or can be connected. In other words, it should be understood that a component may be directly connected or connected to another component, but another component may exist in the middle, and may be indirectly connected or connected.

In addition, the terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as "comprises" or "have" described in this specification are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or the It should be understood that the above does not preclude the possibility of the existence or addition of other features or numbers, steps, operations, components, parts, or combinations thereof.

A method for receiving channel state information and an apparatus supporting the same according to an embodiment of the present invention will now be described in detail with reference to the drawings. In this case, the same reference numerals are used for parts having similar functions and actions throughout the drawings, and overlapping descriptions thereof will be omitted. In addition, in order to avoid obscuring the concept of the present invention, well-known structures and devices may be omitted or shown in block diagram form focusing on core functions of each structure and device.

First, a configuration of a communication network according to an embodiment of the present invention will be described. 2 is a diagram for explaining the configuration of a communication network according to an embodiment of the present invention.

2, the communication network according to the embodiment of the present invention includes a core device 10, a centralized unit 20, CU: Central Unit), a distributed unit 30, DU_H or DU: Distributed Unit), and a wireless unit 40 , DU_L or RRU: Radio Remote Unit) and a diagnostic device 50 .

The core device 10 includes various functional entities including an Access & Mobility Management Function (AMF), a User Plane Function (UPF), a Session Management Function (SMF), and a Policy Control Function (PCF). The core device 10 backhauls data in which user data transmitted from a User Plane Function (UPF) and control data transmitted from an Access Mobility Function (AMF) are merged (BH). ) through the centralized unit 20 can be delivered.

The centralization unit 20 transmits the data received from the core device 10 to the distribution unit 30 through a middlehaul (MH).

The distribution unit 30 modulates the data received from the centralization unit 20 according to I (In-phase) and Q (Quadrature) modulation techniques to generate IQ data. Then, the distribution unit 30 loads the IQ data in a CPRI/eCPRI frame according to the Common Public Radio Interface (CPRI) protocol or the Enhanced Common Public Radio Interface (eCPRI) protocol to the wireless unit (FH) through the fronthaul (FH). 40) is forwarded. On the other hand, the front hole (FH) is connected through the optical path and the SFP (Small Form Plugged) connector that is the end thereof. This fronthaul (FH) greatly affects the speed and performance of the equipment. A good service can be provided when the IQ data transmitted according to the optical fiber eCPRI protocol is normally received without causing a bit error. Such a bit error rate may be determined through the diagnosis apparatus 50 . In addition, it is possible to check whether the fronthaul data is normal by automatically diagnosing the temperature of a small form-factor (SFF) pluggable (SFP) and a loss of frame (LOF) through the diagnostic device 50 .

The wireless unit 40 may receive IQ data from the distribution unit 30 through a fronthaul (FH). Here, the received IQ data, which is the baseband signal, is digital data, and the wireless unit 40 converts the digital data into an intermediate frequency (IF) signal, which is an analog signal. In addition, the wireless unit 40 amplifies the medium frequency (IF) signal into a radio frequency (RF) signal according to the gain of the power amplifier through the power amplifier. Then, the wireless unit 40 may transmit a radio frequency (RF) signal to the terminal 60 through the antenna.

Meanwhile, the wireless unit 40 stores the intensity of the medium frequency (IF) signal and the intensity of the high frequency (RF) signal. The diagnostic apparatus 50 may request the wireless unit 40 for diagnostic data including the intensity of the medium frequency (IF) signal and the intensity of the high frequency (RF) signal. Then, the wireless unit 40 provides the diagnostic data including the intensity of the medium frequency (IF) signal and the intensity of the high frequency (RF) signal to the diagnostic apparatus 50 . Accordingly, the diagnostic apparatus 50 may diagnose the state of the power amplifier of the wireless unit 40 by comparing the intensity of the medium frequency (IF) signal and the intensity of the high frequency (RF) signal.

Next, the wireless unit 40 according to an embodiment of the present invention will be described in more detail. 3 is a diagram for explaining the configuration of a wireless unit according to an embodiment of the present invention. FIG. 4 is a view for explaining a detailed configuration of a wireless structure among the wireless units of FIG. 3 . FIG. 5 is a view for explaining a detailed configuration of a plurality of wireless modules of the wireless structure of FIG. 4 .

Referring to FIG. 3 , the wireless unit 40 includes a control module (Main Processor, 100), a transmission/reception module (Digital Transceiver, 200), a wireless structure (Array Antenna AMP, 300), and a short-range communication module (400). In addition, the wireless unit 40 may further include a radio frequency (RF) coupler 301 and a radio frequency (RF) test port 302 .

The control module 100 may control the overall operation of the wireless unit 40 and signal flow between internal blocks of the wireless unit 40 and perform a data processing function of processing data. The controller 550 may be a central processing unit (CPU).

The transmission/reception module 200 transmits IQ data carried in a CPRI/eCPRI frame according to a Common Public Radio Interface (CPRI) protocol or an Enhanced Common Public Radio Interface (eCPRI) protocol from the distribution unit 30 through a fronthaul (FH). Receive and extract IQ data from CPRI/eCPRI frames. Alternatively, the transmit/receive module 200 transmits the IQ data to the distribution unit 30 through the fronthaul (FH) on the CPRI/eCPRI frame.

The short-range communication module 400 is for communicating with the diagnostic device 50 according to a short-range communication protocol. Here, the short-range communication protocol refers to a method of direct communication between the devices 40 and 50 using an industrial scientific and medical equipment (ISM) band. As a representative short-range communication protocol, Bluetooth may be exemplified. The short-distance communication module 400 receives the diagnostic data request from the diagnostic device 50 and transmits it to the control module 100 . Also, the short-range communication module 400 may transmit diagnostic data including the intensity of the medium frequency (IF) signal and the intensity of the high frequency (RF) signal to the diagnostic apparatus 50 under the control of the control module 100 .

As shown in FIG. 4 , the wireless structure 300 includes a data processing unit 310 and a plurality of wireless modules 320 . In addition, the wireless structure 300 may further include a radio frequency (RF) coupler 301 and a radio frequency (RF) test port 302 .

The data processing unit 310 receives IQ data from the transceiver module 200 , and outputs the received IQ data for each of the plurality of wireless modules 320 , or receives data from the plurality of wireless modules 320 .

5, each of the plurality of wireless modules 320 is a digital analog converter (DAC: Digital to Analog Converter, 321), an output attenuator (attenuator, 322), a power amplifier (PA: Power Amplifier, 323), an output level Detector (324), Input Level Meter (Detector, 325), Low Noise Amplifier (LNA: Low Noise Amplifier, 326), Input Attenuator (327), Analog to Digital Converter (ADC: Analog to Digital Converter, 328), It includes a duplexer (329) and an antenna (330).

The digital-to-analog converter 321 converts IQ data, which is digital data, into an analog signal to generate an intermediate frequency (IF) signal. The intermediate frequency (IF) signal is a signal before being amplified by the power amplifier 323 . At this time, the digital-to-analog converter 321 converts IQ data that is bit data (eg, 24-32 bits) of a digital signal into a decimal number. These decimal numbers represent the strength of the medium frequency (IF) signal. The range of the decimal number is expressed as a number between 0 and 1,340,000 in the case of the 24-bit digital-analog converter 321 . These decimal numbers are referred to as transmission signal strength (TSSI). The output attenuator (attenuator, 322) is input to the power amplifier 323 after attenuating the amplitude of the intermediate frequency (IF) signal. Then, the power amplifier 323 amplifies the intermediate frequency (IF) signal according to the gain of the power amplifier 323 to generate a radio frequency (RF) signal. Then, a radio frequency (RF) signal is radiated through the antenna 330 . Before the high frequency (RF) signal is radiated through the antenna 330 , the output level meter (Detector, 324) measures the intensity of the high frequency (RF) signal amplified according to the gain of the power amplifier 323 by the medium frequency (IF) signal. measure

Meanwhile, when a high-frequency (RF) signal is input through the antenna 330 , the input level meter 325 measures the intensity of the inputted high-frequency (RF) signal. In addition, the low noise amplifier 326 generates an intermediate frequency (IF) signal by amplifying an input high frequency (RF) signal to low noise. Then, the input attenuator (attenuator, 327) after attenuating the amplitude of the intermediate frequency (IF) signal, and then input to the analog-to-digital converter (328). The analog-to-digital converter 328 converts an intermediate frequency (IF) signal, which is an analog signal, into digital data, and then provides it to the data processing unit 310 . At this time, the analog-to-digital converter 328 outputs a received signal strength indicator (RSSI) indicating the strength of an intermediate frequency (IF) signal.

Next, the diagnosis apparatus 50 according to the embodiment of the present invention will be described. 6 is a diagram for explaining the configuration of a diagnosis apparatus according to an embodiment of the present invention.

Referring to FIG. 6 , the diagnosis apparatus 50 according to an embodiment of the present invention includes a communication unit 510 , an input unit 520 , a display unit 530 , a storage unit 540 , and a control unit 550 .

The communication unit 510 is for communicating with the wireless unit 40 according to a short-range communication protocol. Here, the short-range communication protocol refers to a method of direct communication between the devices 40 and 50 using an industrial scientific and medical equipment (ISM) band. As a representative short-range communication protocol, Bluetooth may be exemplified. The communication unit 510 may transmit a diagnostic data request to the wireless unit 40 or may receive diagnostic data from the wireless unit 40 .

The input unit 520 receives a user's key manipulation for controlling the diagnostic apparatus 50 , generates an input signal, and transmits the generated input signal to the control unit 550 . The input unit 520 may include any one of a power key, a number key, and a direction key for power on/off, and may be formed as a predetermined function key on one surface of the diagnosis apparatus 50 . When the display unit 530 is formed of a touch screen, the functions of various keys of the input unit 520 may be performed on the display unit 530, and when all functions can be performed only with the touch screen, the input unit 520 may be omitted. may be

The display unit 530 visually provides a menu of the diagnosis apparatus 50 , input data, function setting information, and other various information to the user. The display unit 530 performs a function of outputting various screens such as a booting screen, a standby screen, and a menu screen of the diagnostic apparatus 50 . The display unit 530 may be formed of a liquid crystal display (LCD), an organic light emitting diode (OLED), an active matrix organic light emitting diode (AMOLED), or the like. Meanwhile, the display unit 530 may be implemented as a touch screen. In this case, the display unit 530 may include a touch sensor, and the control unit 550 may sense a user's touch input through the touch sensor. The touch sensor may be composed of a touch sensing sensor such as a capacitive overlay, a pressure type, a resistive overlay, or an infrared beam, or may be composed of a pressure sensor. . In addition to the above sensors, all kinds of sensor devices capable of sensing contact or pressure of an object may be used as the touch sensor of the present invention. The touch sensor detects a user's touch input, generates a detection signal, and transmits it to the controller 550 . The detection signal may include coordinate data input by the user. When the user inputs the touch position movement motion, the touch sensor may generate a detection signal including coordinate data of the touch position movement path and transmit it to the controller 550 .

The storage unit 540 serves to store programs and data necessary for the operation of the diagnosis apparatus 50 , and may be divided into a program area and a data area. The program area includes a program for controlling the overall operation of the diagnostic apparatus 50 and an operating system (OS) for booting the diagnostic apparatus 50 , for diagnosing the state of the wireless unit 40 according to an embodiment of the present invention. You can store applications, etc. The data area is an area in which data generated according to the use of the diagnostic apparatus 50 is stored. In particular, when the power amplifier 323 of the plurality of radio modules 320 of the radio unit 40 is in a normal state, the storage unit 540 compares the intensity of the medium frequency (IF) signal according to the gain of the power amplifier 323 . A power amplifier gain characteristic to which the intensity of a high frequency (RF) signal is mapped is stored. Also, the storage unit 540 may store various types of data generated according to the operation of the diagnosis apparatus 50 .

The controller 550 may control the overall operation of the diagnostic apparatus 50 and the signal flow between internal blocks of the diagnostic apparatus 50 , and may perform a data processing function of processing data. The control unit 550 may be a central processing unit (CPU), an application processor, or a graphic processing unit (GPU). The control unit 550 includes a data collection unit 551 and a diagnosis unit 553 .

The collection unit 551 transmits a diagnostic data request to the wireless unit 40 through the communication unit 510 . Accordingly, the collection unit 551 is a signal before being amplified through the power amplifier 323 of the plurality of radio modules 320 of the radio unit 40 through the communication unit 510 from the radio unit 40, the medium frequency (IF). ) The transmission signal strength (TSSI) and medium frequency (IF) signals indicating the strength of the signal are amplified through the power amplifier 323 of the plurality of wireless modules 320 of the wireless unit 40 the strength of the high frequency (RF) signal may receive diagnostic data including

The diagnosis unit 553 may diagnose the state of the power amplifier 323 by comparing the strength of the medium frequency (IF) signal and the strength of the high frequency (RF) signal in the diagnostic data received by the collection unit 551 . The state of the power amplifier 323 means whether the gain of the power amplifier 323 is normal.

A detailed operation of the control unit 550 including the data collection unit 551 and the diagnosis unit 553 will be described in more detail below.

Next, a method for diagnosing base station equipment according to an embodiment of the present invention will be described. 7 is a flowchart illustrating a method for diagnosing base station equipment according to an embodiment of the present invention. 8 is a graph for explaining a method for diagnosing base station equipment according to an embodiment of the present invention.

Referring to FIG. 7 , the concentration unit 20 receives data from the core device 10 in step S110 . Such data includes user data transmitted from a user plane function (UPF) of the core device 10 and control signal packet data transmitted from an access mobility function (AMF). After receiving the data, the centralization unit 20 transmits the previously received data to the distribution unit 30 through a middlehaul (MH) in step S120 .

Accordingly, IQ data is generated by modulating data previously received from the concentrator 20 according to I (In-phase) and Q (Quadrature) modulation techniques. Then, the distribution unit 30 transmits the IQ data in step S130, and then the distribution unit 30 transmits the IQ data to the CPRI (Common Public Radio Interface) protocol or the eCPRI (Enhanced Common Public Radio Interface) protocol according to the CPRI/eCPRI protocol. It is loaded on the frame and delivered to the wireless unit 40 through a fronthaul (FH).

Accordingly, the control module 100 of the wireless unit 40 may receive the IQ data through the transmission/reception module 200 . Then, the control module 100 converts the IQ data into an analog signal, an intermediate frequency (IF) signal, through the digital-analog converter 321 of the plurality of wireless modules 230 in step S140, and a power amplifier (PA). , 323) to amplify an intermediate frequency (IF) signal into a high frequency signal. In this step S140, the control module 100 transmits signal strength (TSSI) indicating the strength of the medium frequency (IF) signal through the digital-to-analog converter 321 and the strength of the high frequency (RF) signal through the output level measuring instrument 324 . to collect Subsequently, the control module 100 of the wireless unit 40 transmits a high frequency (RF) signal to the terminal 60 through the antenna 330 in step S150 .

Meanwhile, the collection unit 551 of the control unit 550 of the diagnosis apparatus 50 transmits a diagnosis data request to the wireless unit 40 through the communication unit 510 in step S160 .

When the control module 100 of the wireless unit 40 receives such a diagnostic data request, in step S170, a diagnosis including the transmission signal strength (TSSI) indicating the strength of the medium frequency (IF) signal and the strength of the high frequency (RF) signal The data is transmitted to the diagnosis device 50 through the short-range communication module 400 . Accordingly, the collection unit 551 of the control unit 550 of the diagnosis apparatus 50 may receive the transmit signal strength (TSSI) indicating the strength of the medium frequency (IF) signal and the strength of the high frequency (RF) signal.

Then, the diagnosis unit 553 of the controller 550 compares the intensity of the medium frequency signal and the intensity of the high frequency signal in step S180 to diagnose the state of the power amplifier.

Specifically, when the power amplifier 323 is in a normal state, the storage unit 540 is a power amplifier gain in which the intensity of the high frequency (RF) signal is mapped to the intensity of the medium frequency (IF) signal according to the gain of the power amplifier 323 . save the properties. A graph of such a power amplifier gain characteristic is shown in FIG. 8 . As shown, the output (strength of the high frequency signal) compared to the TSSI value in the normal case is shown.

The diagnosis unit 553 first calculates the intensity OL of the high frequency signal in the normal case according to the following Equations 1 and 2 from the transmission signal intensity TSSI indicating the intensity of the intermediate frequency (IF) signal.

In Equation 1, mTSSI is the maximum value of TSSI, and is expressed as the square value of the I modulation signal and the Q modulation signal. In the case of the digital-analog converter 321 using 24 bits, the maximum value is 1,340,000.

Here, OL represents the intensity of a high-frequency signal in a normal case. Pmax represents the maximum value of the high frequency (RF) signal strength, and may be 34 dBm. Here, mTSSI is the maximum value of TSSI, and gTSSI is the measured value of TSSI. That is, gTSSI is a decimal value converted by the digital-to-analog converter 321 .

As described above, after obtaining the intensity of the high-frequency signal in the normal case according to Equations 1 and 2, the diagnostic unit 553 compares the power amplifier gain characteristics as shown in FIG. It is diagnosed as present, and if the difference is less than a threshold, it is determined to be normal.

Meanwhile, the method for diagnosing base station equipment according to an embodiment of the present invention may be provided in the form of a computer-readable medium suitable for storing computer program instructions and data. In particular, the computer program of the present invention may operate in the optical repeater 20 . Such a computer-readable recording medium may include program instructions, data files, data structures, etc. alone or in combination, and includes all types of recording devices in which data readable by a computer system is stored. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, compact disk read only memory (CD-ROM), and optical recording media such as DVD (Digital Video Disk). Stores program instructions such as Magneto-Optical Media, ROM (Read Only Memory), RAM (Random Access Memory), Flash memory, etc. and hardware devices specially configured to perform In addition, the computer-readable recording medium is distributed in a computer system connected through a network, so that the computer-readable code can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers in the technical field to which the present invention pertains.

Although described and illustrated in relation to the preferred embodiment for illustrating the technical idea of the present invention, the present invention is not limited to the configuration and operation as shown and described as such, and without departing from the scope of the technical idea. It will be apparent to those skilled in the art that many changes and modifications to the present invention are possible. Accordingly, all such suitable alterations and modifications and equivalents are to be considered as being within the scope of the present invention.

In the method for diagnosing base station equipment according to the present invention, it is difficult to use a measuring instrument for a radio unit (DU_L or RRU: Radio Remote Unit) including a plurality of radio modules (Radio Element) including each power amplifier and antenna. In consideration of this, it is possible to easily diagnose the state of each power amplifier of a plurality of radio modules (Radio Element) by comparing the intensity of the medium frequency signal and the intensity of the high frequency signal passing through the power amplifier before passing through the power amplifier. The present invention has industrial applicability because it has sufficient potential for marketing or business, as well as to the extent that it can be clearly implemented in reality.

10: core device 20: centralized unit
30: distributed unit 40: wireless unit
50: diagnostic device 60: terminal
100: control module 200: transmit/receive module
300: wireless structure 301: high frequency coupler
302: high frequency test port 310: data processing unit
320: wireless module 321: digital analog converter
322: output attenuator 323: power amplifier
324: output level meter 325: input level meter
326: low noise amplifier 327: input attenuator
328: analog digital converter 329 duplexer
330: antenna 400: short-range communication module
510: communication unit 520: input unit
530: display unit 540: storage unit
550: control unit

Claims (8)

a communication unit for communicating with a wireless unit including a plurality of wireless modules each including a power amplifier and an antenna;
a collection unit configured to collect the intensity of the medium frequency signal, which is a signal before amplified by the power amplifier through the communication unit, and the intensity of the high frequency signal in which the medium frequency signal is amplified through the power amplifier; and
Comparing the gain characteristics of the power amplifier according to the comparison of the intensity of the high frequency signal collected from the collecting unit and the intensity of the high frequency signal in the steady state calculated through the intensity of the medium frequency signal in the steady state, and the gain characteristic of the power amplifier in the case of a steady state and a diagnostic unit for diagnosing that the gain of the power amplifier is normal when the difference is less than the threshold.
A device for diagnosing base station equipment. According to claim 1,
A storage unit for storing a power amplifier gain characteristic in which the intensity of the high frequency signal is mapped to the intensity of the medium frequency signal when the power amplifier is in a normal state;
A device for diagnosing base station equipment. 3. The method of claim 2,
The diagnosis unit

Calculate the intensity of the high-frequency signal in the normal case according to
If the difference is less than a threshold value by comparing the gain characteristics of the power amplifier according to the comparison of the calculated strength of the high frequency signal and the strength of the collected high frequency signal with the gain characteristics of the power amplifier in a steady state, it is assumed that the gain of the power amplifier is normal. diagnose,
The OL is the intensity of the high-frequency signal in a normal case,
The Pmax is the maximum value of the high frequency signal strength,
The mTSSI is the maximum value of the transmission signal strength (TSSI),
The gTSSI is a measured value of the transmission signal strength
A device for diagnosing base station equipment. According to claim 1,
The strength of the medium frequency signal is
Transmission signal strength (TSSI: Transmission Signal Strength Indicator), characterized in that
A device for diagnosing base station equipment. The intensity of the medium-frequency signal, which is a signal before the collection unit is amplified through the power amplifier, from the wireless unit including a plurality of wireless modules including a power amplifier and an antenna, and the high-frequency signal in which the medium-frequency signal is amplified through the power amplifier. collecting the century; and
When the diagnostic unit is in a steady state calculated through the intensity of the mid-frequency signal, the gain characteristic of the power amplifier according to the comparison of the intensity of the high-frequency signal and the intensity of the high-frequency signal collected from the collection unit is in the normal state. and diagnosing that the gain of the power amplifier is normal if the difference is less than a threshold value by comparing
A method for diagnosing base station equipment. delete 6. The method of claim 5,
The step of diagnosing the state of the power amplifier is
The diagnostic unit Equation

Depending on the
calculating the intensity of a high-frequency signal in a normal case; and
If the difference is less than a threshold value by comparing the gain characteristics of the power amplifier according to the comparison of the calculated strength of the high frequency signal and the strength of the collected high frequency signal with the gain characteristics of the power amplifier in a steady state, it is assumed that the gain of the power amplifier is normal. diagnosing; including,
The OL is the intensity of the high-frequency signal in a normal case,
The Pmax is the maximum value of the high frequency signal strength,
The mTSSI is the maximum value of the transmission signal strength (TSSI),
The gTSSI is a measured value of the transmission signal strength
A method for diagnosing base station equipment. 6. The method of claim 5,
The strength of the medium frequency signal is
Transmission signal strength (TSSI: Transmission Signal Strength Indicator), characterized in that
A method for diagnosing base station equipment.

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