KR20030030215A - Apparatus for monitoring radio frequency of repeater - Google Patents

Abstract

PURPOSE: A monitoring device for repeaters is provided to analyze repeater input/output RF(Radio Frequency) waveform and each module through a computer including an application program of GUI(Graphic User Interface) at a field or remote site in which a repeater is installed, without using an additional spectrum analyzer, and to operate and maintain the repeater on the basis of analyzed results. CONSTITUTION: An RF signal processing unit(100) performs analog processing of path setup, frequency conversion, level amplifying and DC(Direct Current) voltage detection for signals inputted from a repeater. A digital conversion and control unit(200) converts the analog processing data of path setup, frequency conversion, level amplifying and DC voltage detection into digital data to output converted data to an external, and provides each control function of the repeater in accordance with data inputted from an external. And an application software terminal unit(300) includes an installed application program under a GUI environment based on Windows software for operating and maintaining the repeater, and displays the data inputted from the digital conversion and control unit(200) connected through a predetermined communication connection terminal on the application under the GUI environment. Also, the application software terminal unit(300) delivers a control command inputted by a person in charge of operation and maintenance for the repeater who confirms the data displayed on a screen to the digital conversion and control unit(200).

Description

Apparatus for monitoring radio frequency of repeater

The present invention relates to a monitoring device for a repeater.

More specifically, the repeater maintenance and repair staff analyzes the repeater input and output high frequency waveforms and various modules at the site or the remote site where the repeater is installed without additional measuring equipment, and performs the repeater maintenance and repair management based on the analysis results. It relates to a repeater monitoring device.

Recently, as the use of mobile communication devices such as mobile phones has increased significantly, each communication provider has installed many base stations and repeaters to use mobile communication services in any region of the country.

As the number of base stations and repeaters is greatly increased, each communication provider continuously performs maintenance and maintenance for normal operation of the corresponding base station and repeaters.

However, the maintenance and repair work performed through the monitoring of the conventional repeater as described above is a form in which only the power of the output signal is displayed on the LCD numerically so that the person in charge of maintenance and maintenance simply depends on the number. In the case of analyzing the output signal of the relay, the analysis of the corresponding signal could not be performed accurately, and there was a problem that not only adversely affected the base station but also difficulty in optimizing an area for providing a mobile communication service.

In addition, for accurate signal analysis, maintenance and repair personnel have to carry out expensive signal analyzers and perform output signal analysis of repeaters. .

An object of the present invention is to solve the above problems, the repeater maintenance, maintenance personnel through the computer installed the application program of the graphical user interface (GUI) environment in the field or remote site where the repeater is installed without additional measurement equipment It is to provide a repeater monitoring device that performs the analysis of the repeater input and output high frequency waveform and various modules, and to perform the repeater maintenance, maintenance management based on the analysis results.

1 and 2 is a block diagram schematically showing the configuration of a repeater monitoring apparatus according to the present invention,

3 is a view showing in more detail the configuration of the high frequency signal processing means and the digital conversion and control means of FIGS.

4 is a diagram showing an example of a full screen of an application program of a graphical user interface environment based on Windows software according to the present invention;

5 to 8 are diagrams showing an example of measurement waveforms for each module measured through an application manipulation of a user.

Explanation of symbols on the main parts of the drawings

100: high frequency signal processing means

200: digital conversion and control means

300: application software terminal means

400: wired and wireless communication interface means

Repeater monitoring apparatus according to the present invention for achieving this purpose, it is installed in the repeater to perform repeater input and output high frequency waveforms and analysis of the various modules, based on the results of the repeater monitoring, repeater monitoring An apparatus comprising: high frequency signal processing means for performing analog processing of routing, frequency conversion, level amplification and DC voltage detection of a signal input from a repeater; Digital conversion for converting analog processing data of path setting, frequency conversion, level amplification and DC voltage detection performed by the high frequency signal processing means into digital and outputting it to the outside, and performing various control functions of the repeater according to the data input from the outside. And control means; Application program of graphic user interface environment based on Windows software for repeater maintenance and repair is installed, and data input from digital conversion and control means connected through predetermined communication connection terminal is installed on application program of graphic user interface environment. It is characterized in that it is configured to process the display, and the application software terminal means for transmitting the control command input by the repeater maintenance, maintenance personnel to check the data displayed on the screen to the digital conversion and control means.

In addition, the repeater monitoring device according to the present invention, in the repeater monitoring device for performing repeater input and output high frequency waveform and analysis of various modules, and repeater maintenance, maintenance management based on the analysis results, High frequency signal processing means for performing analog processing of routing, frequency conversion, level amplification and DC voltage detection of a signal input from the repeater; Digital conversion for converting analog processing data of path setting, frequency conversion, level amplification and DC voltage detection performed by the high frequency signal processing means into digital and outputting it to the outside, and performing various control functions of the repeater according to the data input from the outside. And control means; It is composed of wired or wireless modem and performs data input / output with the remote monitoring center under the control of the monitoring center located at the remote site where the application program of the graphical user interface environment based on Windows software for repeater maintenance and repair is installed. Another aspect of the present invention includes a wired and wireless communication interface means.

Hereinafter, with reference to the accompanying drawings will be described in detail the monitoring device for a repeater of the present invention.

1 is a block diagram schematically showing the configuration of an embodiment of a repeater monitoring apparatus according to the present invention, a diagram showing the configuration when the repeater maintenance, maintenance personnel are located at the repeater site.

As shown, the high frequency signal processing means 100 performs the analog processing of the path setting, the frequency conversion, the level amplification and the DC voltage detection of the signal input from the repeater and outputs it to the digital conversion and control means 200.

The digital conversion and control means 200 converts analog processing data of path setting, frequency conversion, level amplification and DC voltage detection performed by the high frequency signal processing means 100 into digital, and converts the digitally converted data into an application software terminal. Output to the means 300, and performs various control functions of the repeater in accordance with the data input from the application software terminal means (300).

Application software terminal means 300 is installed in the application program of the graphical user interface environment based on the Windows software for the repeater maintenance, maintenance, and is input from the digital conversion and control means 200 connected through a predetermined communication connection terminal Process the data to be displayed on the application program of the graphical user interface environment, digital conversion and control means for the repeater maintenance to check the data displayed on the screen, control commands for checking and maintaining the repeater function input by the maintenance personnel Forward to 200.

In this case, the above-described application software terminal means 300 is a note PC or personal computer in which an application program of a graphical user interface environment based on Windows software for maintenance and repair of a repeater is installed. Can carry around. In addition, the application software terminal means 300 uses a communication protocol such as RS-232, HDLC, RS-485 for data input and output with the digital conversion and control means 200.

In addition, the application program of the graphical user interface environment installed in the above-described application software terminal means 300 has various functions as follows.

-. Center frequency setting-> Function to set the center frequency of the screen to display the spectrum

-. span setting-> A function that determines the overall frequency width of the screen on which the spectrum is displayed

-. Reference level setting-> Function to set the top level of the screen where the spectrum is displayed

-. RBW Setup-> Function to set filter to be used for signal analysis (sampling)

-. VBW Settings-> Function to set the video filter for the display of signals on the screen where the spectrum will be displayed

-. Marker (Peak / Delta) Setting-> Peak is a function that displays the level value of the marker at the level of the highest part of the signal on the screen. Display function

-. Average count setting-> A function that collects actual data by count number and displays average value in displaying signal

-. Snapshot-> Screen capture of current waveform

-. Alarm-> Alarm display for repeater module or function

-. Routing-> Ability to set the path for measurement

-. Offset setting-> Offset for performance calibration of device, offset for compensation of device external device value, offset for threshold setting for alarm generation such as power, doctor

-. Power (channel, peak) measurement-> Peak is the ability to measure the level of the area where the marker is located using the marker, Channel is the ability to measure the total power for a certain band

-. VSWR Measurement-> Measure the ratio of the signal output from any port to the reflected signal

-. ACPR Measurement-> Measures the power difference at a specific offset frequency from one frequency band to an adjacent channel

-. Trace Save Setup-> Save current waveform on screen and continue to overlap waveform later

-. Channel Bandwidth Settings-> Ability to set bandwidth for channel power measurements

Figure 2 is a block diagram schematically showing the configuration of another embodiment of the repeater monitoring apparatus according to the present invention, a diagram showing the configuration in the case where the repeater maintenance, maintenance personnel are not located in the repeater site, but located in a remote place.

As shown, the high frequency signal processing means 100 performs the analog processing of the path setting, the frequency conversion, the level amplification and the DC voltage detection of the signal input from the repeater and outputs it to the digital conversion and control means 200.

The digital conversion and control means 200 converts analog processing data of path setting, frequency conversion, level amplification and DC voltage detection performed by the high frequency signal processing means 100 into digital, and converts the digitally converted data into a wired / wireless communication interface. Output to the means 400, and performs various control functions of the repeater in accordance with the data input from the wired and wireless communication interface means (400).

The wired / wireless communication interface means 400 is composed of a wired or wireless modem, which is responsible for digital data transmission between the repeater and the remote monitoring center, and a note PC on which the application program of the graphical user interface environment based on the Windows software for the repeater maintenance and repair is installed. Alternatively, data input / output with the corresponding remote monitoring center is performed under the control of a monitoring center (for example, a central base station or a mobile vehicle) located at a remote location where a personal computer is located.

That is, the wired / wireless communication interface means 400 transmits the data input from the digital conversion and control means 200 to be wired or wirelessly to be displayed on the application program of the graphic user interface environment of the remote place, and maintains the repeater to check the remote place. , The control command for checking, maintaining, and repairing the relay function input by the maintenance personnel is transmitted to the digital conversion and control means 200 by wire or wirelessly.

3 is a view showing in more detail the configuration of the high-frequency signal processing means 100 and the digital conversion and control means 200 of FIGS. 1 and 2 described above.

As shown, the high frequency signal processing means 100 includes a plurality of signal input ports 105, a first switch 110, an attenuator 115, a plurality of local oscillators 120, and a second switch ( 125, mixer 130, third, fourth switch 135, 145, plurality of filters 140, intermediate frequency amplifier 150, log detector 155, fifth, sixth switch 160, 170 ) And a plurality of video filters 165.

The plurality of signal input ports 105 accommodate a filter suitable for each frequency band, and receive high frequency signals of different frequency bands from low frequency to several GHz from the repeater. The number of signal input ports can be changed at design time.

The first switch 110 selects a signal of a port to be analyzed among the plurality of signal input ports 105 according to the control of the central processing unit 220 in the digital conversion and control means 200.

The attenuator 115 attenuates the signal level and outputs it to the mixer 130 in order to prevent saturation of the signal level input through the first switch 110 and sets a reference level on the graphical user interface.

The plurality of local oscillators 120 generates local oscillation signals used according to frequencies input to the plurality of signal input ports 105. In addition, the local oscillator 120 is used according to the frequency (low frequency, high frequency) input to the signal input port 105, the type and number can be changed according to the design, each local oscillator 120 is operating band And step frequency.

The second switch 125 selects a specific signal from among several local oscillation signals generated by the local oscillator 120 according to the control of the central processing unit 220 in the digital conversion and control means 200.

The mixer 130 generates an intermediate frequency by combining the local oscillation signal input through the above-described second switch 125 and the signal input through the attenuator 115.

The third and fourth switches 135 and 145 may perform the intermediate frequency signal analysis using the filter 140 having an arbitrary bandwidth according to the control of the central processing unit 220 in the digital conversion and control means 200. It works by interlocking with each other.

The plurality of filters 140 are filters having arbitrary bandwidths used in analyzing an intermediate frequency signal, and select filters having different bandwidths to sample the intermediate frequency signals. The type and quantity of filters used can be determined at design time (eg 300 KHz, 3 KHz, 30 KHz, etc.).

The intermediate frequency amplifier 150 amplifies and outputs a low level intermediate frequency signal input from the plurality of filters 140 through the fourth switch 145.

The log detector 155 detects and outputs an analog DC voltage according to the level of the intermediate frequency signal input through the intermediate frequency amplifier 150.

The fifth and sixth switches 160 and 170 are selected to be used when using any one of the plurality of video filters 165 under the control of the central processing unit 220 in the digital conversion and control means 200. , It works in conjunction with each other.

The plurality of video filters 165 are filters associated with waveform traces and support to display waveforms according to filter selection. The type and quantity of filters can be changed according to the design.

In addition, the digital conversion and control means 200 is composed of an analog-to-digital converter 210, a central processing unit 220, and an interface unit 230.

The analog / digital converter 210 converts the analog DC voltage input from the high frequency signal processing means 100 into digital data and outputs the digital data to the central processing unit 220 to be described later.

The central processing unit 220 controls to output digital data input through the analog / digital converter 210 to the application software terminal means 300 or the wired / wireless communication interface means 400, and the application software terminal means 300 or It is responsible for the control monitoring of the repeater according to the control command of the operator input through the wired and wireless communication interface means (400).

The interface unit 230 transmits control commands input from the central processing unit 220 to various devices and components of the repeater.

Next, the operation of the repeater monitoring apparatus according to the present invention configured as described above will be described in detail with reference to FIGS.

4 is a view showing an example of a full screen of the application program of the graphical user interface environment based on the Windows software according to the present invention, Figures 5 to 8 is a measurement waveform for each module measured by the user's application program operation Figure 1 shows an example.

First, a communication operator who installs a repeater monitoring device according to the present invention in repeaters installed throughout the country dispatches a repeater maintenance and repair officer to the repeater when it is time to perform the function monitoring, maintenance and repair of the repeater. .

In other words, the repeater maintenance and repair officer possesses an application software terminal means 300, such as a note PC, on which a Windows software-based graphical user interface environment application program is installed, and visits the repeater site to monitor, maintain, and repair the repeater. To do.

In more detail, the repeater maintenance and repair staff first connected the application software terminal means 300 to a communication connection terminal installed at a predetermined position of the repeater to perform communication connection with the digital conversion and control means 200. Then run the application (see Figure 4).

Subsequently, repeater maintenance and maintenance personnel can monitor the repeater functionality over the full screen of the application in a graphical user interface environment (e.g., measure channel power, measure Adjacent Carrier Power Ratio (ACPR) between adjacent channels). , OB (Occupied BandWidth) measurement, antenna standing voltage ratio (VSWR) measurement, and the like, the high frequency signal processing means 100 installed in the repeater and the digital conversion and control means 200 Digital data (waveform, numerical value) for each module is inputted through the module and displayed on the screen (see FIGS. 5 to 8).

Then, the repeater maintenance and repair officer immediately checks the digital data for each module on the screen to determine whether the repeater is operating normally, and if the corresponding function is abnormally operated, the control software for the action for the application software terminal means ( Input to a repeater through 300, the digital conversion and control means 200 transmits a control command input through the application software terminal means 300 to various devices and parts of the repeater to correct the functional error.

For example, if the repeater maintenance and repair staff selects the channel power measurement on the full screen of the application program, the waveform and the numerical value of the channel power of the repeater is separately displayed on the screen of the application software terminal means 300 as shown in FIG. Is displayed through the window. In this case, the channel power is the power of radio waves for transmitting information and corresponds to a frequency bandwidth of 1.23 MHz in CDMA (PCS), and includes power of a carrier having a bandwidth and spurious power of an adjacent repeater. The frequency bandwidth setting condition can be changed by the person in charge of repeater maintenance and repair.

In addition, when the repeater maintenance and repair personnel selects the ACPR measurement on the full screen of the application program, the waveform of the leakage current ratio between adjacent channels of the repeater is displayed on the screen of the application software terminal means 300 as shown in FIG. Displayed in a separate window. In this case, the leakage power ratio between adjacent channels is one of the indicators of linearity in a power amplifier of a digital communication system such as CDMA, and represents a power difference at a specific offset frequency from one frequency band to an adjacent channel. Use dBc. In the case of the power amplifier, only the magnetic channel signal is amplified well, and the other channel band should be suppressed to the maximum amplification, so the leakage ratio between adjacent channels is used as an important indicator.

In addition, when the repeater maintenance and maintenance personnel selects the occupied bandwidth measurement on the entire screen of the application program, the waveform of the occupied bandwidth of the repeater is displayed on the screen of the application software terminal means 300 as shown in FIG. Is displayed through. In this case, the occupied bandwidth refers to the width of the frequency component included in the radio wave transmitting information. In general, the bandwidth (i.e. 99 of the total power) is defined as the width between the upper and lower frequencies where the average power radiated below the upper and lower frequencies is 0.5%, respectively, compared to the total average power. Bandwidth (% of the bandwidth), it is desirable to minimize the frequency bandwidth for efficient use of the frequency, the frequency bandwidth allowed for launch propagation is defined by the type of launch propagation, the type of work.

In addition, when the repeater maintenance and repair personnel selects the antenna stage standing wave ratio measurement on the entire screen of the application program, the waveform and the numerical value of the antenna terminal standing wave ratio of the repeater on the screen of the application software terminal means 300 as shown in FIG. Is displayed in a separate window. At this time, the antenna stage standing wave ratio is a function for checking the connection state of the cable of the service antenna or the link antenna of various repeaters, and detects and checks the repeater output signal level and the signal level reflected from the output terminal.

On the other hand, unlike the above-described embodiment in which the repeater maintenance, maintenance personnel directly visit the repeater site to perform the repeater monitoring, the communication service provider monitors the function of the repeater at a remote location such as a central base station or a mobile vehicle, and maintains the repeater. Repair can be performed.

That is, the repeater maintenance and repair staff located at a remote site is an application software terminal means 300, such as a note PC or a personal computer, on which a Windows software-based graphical user interface environment application program is installed, and a wired / wireless communication interface means installed at a repeater in a specific region. The communication 400 is connected, and the monitoring, maintenance and repair of the repeater is performed while confirming the function of the repeater based on the digital data transmitted through the wired / wireless communication interface means 400.

In more detail, the repeater maintenance, maintenance personnel located in a remote location first performs an application software terminal means (300) to communicate with the wired and wireless communication interface means 400 installed at a predetermined position of the repeater, and then the application program (See Figure 4).

Subsequently, the repeater maintenance and repair staff will monitor the repeater functionality over the full screen of the application in a graphical user interface environment (e.g., measure channel power, measure the leakage power between adjacent channels, occupy bandwidth measurements, antenna stage standing waves). Non-measurement, etc.), the data of each module (waveform, numerical value) digitally processed through the high frequency signal processing means 100 and the digital conversion and control means 200 installed in the repeater are wired or wireless communication interface means 400. ) Is received and displayed on the screen (see FIGS. 5 to 8).

Then, the repeater maintenance and repair officer immediately checks the digital data for each module on the screen to determine whether the repeater is operating normally, and if the corresponding function is abnormally operated, the control software for the action for the application software terminal means ( 300 is inputted to the wired / wireless communication interface means 400, and the digital conversion and control means 200 transmits a control command received from the wired / wireless communication interface means 400 to various devices and components of the repeater to provide a functional error. Correct it.

As described above, according to the monitoring device for a repeater of the present invention, the repeater maintenance, maintenance personnel perform analysis on the repeater input and output high frequency waveforms and various modules at the site or remote location where the repeater is installed without additional measurement equipment, and based on the analysis result By repeater maintenance and maintenance management, it is possible to analyze the exact waveform together without analyzing the output signal of the repeater in the form of simply relying on numbers as in the prior art, so that the function of the repeater can be varied and the repeater functions can be varied. Can be checked, and the area for providing a mobile communication service can be optimized.

In addition, the repeater maintenance and repair personnel do not need to carry the expensive measurement equipment individually for accurate signal analysis, thereby greatly reducing the cost of repeater maintenance and maintenance.

In addition, by using a wired / wireless modem, the repeater function can be monitored and controlled remotely in addition to the repeater site so that the repeater maintenance and repair personnel do not have to visit the repeater site at the same time, and at the same time monitor, maintain and repair a plurality of repeaters. This can save you a lot of time and money.

Herein, while the present invention has been described with reference to the preferred embodiments, those skilled in the art will variously modify the present invention without departing from the spirit and scope of the invention as set forth in the claims below. And can be changed.

Claims (5)

In the repeater monitoring device installed in the repeater to perform the analysis of the repeater input and output high frequency waveform and various modules, and to perform the repeater maintenance, maintenance management based on the analysis result, High frequency signal processing means for performing analog processing of signal routing, frequency conversion, level amplification and DC voltage detection from the repeater; Digitally converts analog processing data of path setting, frequency conversion, level amplification and DC voltage detection performed by the high frequency signal processing means into digital and outputs it to the outside, and performs various control functions of the repeater according to the input data from the outside. Conversion and control means; And An application program of a graphical user interface environment based on Windows software for repeater maintenance and repair is installed, and data input from the digital conversion and control means connected through a predetermined communication connection terminal is stored on the application program of the graphical user interface environment. Repeater monitoring, characterized in that it comprises an application software terminal means for transmitting the control command input by the person in charge of maintenance and maintenance of the repeater to check the data displayed on the screen to the digital conversion and control means Device. In the repeater monitoring device installed in the repeater to perform the analysis of the repeater input and output high frequency waveform and various modules, and to perform the repeater maintenance, maintenance management based on the analysis result, High frequency signal processing means for performing analog processing of routing, frequency conversion, level amplification, and DC voltage detection of a signal input from a repeater to be monitored; Digitally converts analog processing data of path setting, frequency conversion, level amplification and DC voltage detection performed by the high frequency signal processing means into digital and outputs it to the outside, and performs various control functions of the repeater according to the input data from the outside. Conversion and control means; And It is composed of wired or wireless modem and performs data input / output with the remote monitoring center under the control of the monitoring center located at the remote site where the application program of the graphical user interface environment based on Windows software for repeater maintenance and repair is installed. Repeater monitoring device comprising a wired and wireless communication interface means. The method of claim 1 or 2, wherein the high frequency signal processing means, A plurality of signal input ports accommodating a filter suitable for each frequency band and receiving high frequency signals of different frequency bands from low frequency to several GHz from a repeater; A first switch for selecting a signal of a port to be analyzed among the plurality of signal input ports according to external control; An attenuator for attenuating the signal level input through the first switch to prevent saturation of the input signal; A plurality of local oscillators for generating local oscillation signals used according to frequencies input to the plurality of signal input ports; A second switch for selecting a specific signal among a plurality of local oscillation signals generated by the local oscillator according to external control; A mixer for generating an intermediate frequency by combining the local oscillation signal input through the second switch and the signal input through the attenuator; A third switch and a fourth switch configured to select an intermediate frequency signal analysis using a filter having an arbitrary bandwidth according to external control and operate in conjunction with each other; A filter having an arbitrary bandwidth used in the analysis of an intermediate frequency signal, the plurality of filters selecting a filter having a different bandwidth to sample an intermediate frequency signal; An intermediate frequency amplifier for amplifying and outputting a low level intermediate frequency signal input from the plurality of filters through a fourth switch; A log detector for detecting and outputting an analog DC voltage according to the level of the intermediate frequency signal input through the intermediate frequency amplifier; Fifth and sixth switches selected to be used when using any one of a plurality of video filters according to external control, and operatively interlocked with each other; And A filter associated with a trace trace, comprising a plurality of video filters for supporting display of waveforms according to filter selection. The method of claim 1 or 2, wherein the digital conversion and control means, An analog / digital converter for converting an analog DC voltage input from the high frequency signal processing means into digital data; Control to output digital data input through the analog / digital converter to the application software terminal means or the wired / wireless communication interface means, and according to a control command of an operator input through the application software terminal means or the wired / wireless communication interface means A central processing unit for controlling monitoring of the repeater; And And an interface unit for transmitting control commands input from the central processing unit to various devices and components of the repeater. The method of claim 1, wherein the application software terminal means, A repeater monitoring device, characterized in that a note PC or a personal computer on which the application of the graphical user interface environment based on Windows software for repeater maintenance and repair is installed.