KR20000000365A - Apparatus monitoring Repeater and Method therefor - Google Patents

Abstract

PURPOSE: An apparatus and method for monitoring a repeater are provided to perform fast repairing according to bidirectional monitoring. CONSTITUTION: The apparatus comprises a forward detector(210), a reverse detector(215), a power detector(220), a line detector(230), a hook switch(240), a ring detector(250), a DTMF generator(260), reception line detector(270) and a system controller(280). The system controller(280) stores error detecting signals from the forward detector(210), reverse detector(215) and power detector(220). The system controller(280) controls the hook switch(240) and DTMF generator(260) according to detection signals from the line detector(230), hook switch(240) and reception line detector(270). Thereby, a monitoring center(400) is connected, and error detection information and number of the repeater(100) is transmitted to the monitoring center(400).

Description

Repeater monitoring device and its method {Apparatus monitoring Repeater and Method therefor}

The present invention relates to a repeater monitoring system, and in particular to automatically detect whether the operation of the forward (channel formed by the mobile station at the base station) and the reverse (channel formed by the base station from the mobile terminal) and the operation state of each device The present invention relates to a repeater monitoring device and a method capable of responding promptly when an abnormality occurs in a repeater.

As is well known, the mobile communication system divides the entire service area into a small service area called a cell, unlike a wide area method that uses a service area as one large area, and uses a predetermined number of wireless channels within each cell. Will be assigned.

In addition, wireless base stations (Cell Sites) installed in each cell are centrally controlled in a switching system, and as the demand for mobile communication increases rapidly, the cellular system increases the number of subscribers in a limited frequency band to accommodate more subscribers. In order to expand the service area to the entire area, more wireless base stations and repeaters are being installed to increase the cell area.

As a result, repeaters are installed in areas where the radio waves are weak or in the shaded area of radio waves to expand the service area. Therefore, the need for a repeater monitoring system that can monitor and cope with the normal operation of such repeaters to provide better service is also increased. It is becoming.

For this purpose, a monitoring device using a conventional wired telephone or a built-in monitoring device for a mobile terminal has been developed. However, this does not detect all the bidirectional channels of the repeater, but only the output level of the one-way channel, thereby determining whether the repeater is operating normally. Not only was it difficult to pinpoint accurately, but the monitoring contents were limited to the repeater's power supply. Also, the monitoring system was unable to operate during a power outage, and maintenance costs and costs were high.

Accordingly, an object of the present invention is to provide a repeater monitoring device and method that can automatically respond to the occurrence of a repeater abnormality by automatically detecting the operating state of the bidirectional channel of the repeater and the operating state of each device and reporting it to the monitoring center. To provide.

In another aspect, an object of the present invention is to provide a repeater monitoring apparatus and method capable of supporting smooth maintenance of a repeater by detecting whether an operating state such as power supply and shutdown of a repeater is normally operating.

In another aspect, by supplying DC power through the telephone line in case of power failure, it is possible to operate the monitoring system even in the event of power failure and report the power failure status to the monitoring center, as well as a low-maintenance repeater monitoring device and method thereof. The purpose is to provide.

Technical means of the present invention to achieve the above object,

In the monitoring system that monitors the status of the repeater and reports to the monitoring center,

Forward and reverse detection means for detecting upper and lower limits of signal levels output through the forward and reverse channels of the repeater, respectively;

Power detection means for detecting a power state applied to the repeater;

Line fail detection means for detecting whether a telephone line is used;

A hook switch that is opened and closed when a call is made according to a predetermined control signal;

Ring detecting means for detecting a ring signal sent from a telephone station as the hook switch is closed;

DTMF generating means for generating a DTMF signal according to a predetermined control signal when a ring signal is detected by the ring detecting means;

Incoming line detecting means for detecting whether a telephone line is used at the destination after initiating a call in the DTMF generating means; And

After storing the abnormal detection signal of the repeater output from the forward detecting means, the reverse detecting means and the power detecting means, the hook according to the line state detecting signal provided from the line fail detecting means, the ring detecting means and the incoming line detecting means. It is characterized in that it comprises a system controller for controlling the switch and DTMF generating unit to control the transmission of the abnormality detection information and the unique number of the repeater after connecting to the monitoring center.

In addition, the operation method of the present invention for achieving the above object,

A first step of detecting and collecting a malfunction of the repeater;

A second step of generating operation-related information based on the collected information;

A third step of detecting whether a designated own telephone line is in use to notify the data generated in the second step;

A fourth step of determining whether a ring signal is detected after hooking off a hook switch if the telephone line is not in use;

A fifth step of determining whether a telephone line of the destination is in use after generating a DTMF signal of a destination when the ring signal is detected; And

If the telephone line of the destination is not in use, the sixth step of transmitting the operation-related information and the unique number of the repeater collected in the second step to the destination is repeatedly performed.

1 is a conceptual diagram showing a repeater monitoring system according to the present invention,

2 is a block diagram showing a detailed circuit of the monitoring apparatus according to an embodiment of the present invention,

3 is a flowchart illustrating an operation process of the monitoring apparatus according to FIG. 2.

Explanation of symbols on the main parts of the drawings

10: wireless base station 50: mobile terminal

100: repeater 200: monitoring device

210: forward detector 215: reverse detector

220: power detection unit 230: line fail detection unit

240: hook switch 250: ring detection unit

260: DTMF generation unit 270: incoming line detection unit

280: system controller 300: telephone line

400: monitoring center

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a conceptual diagram illustrating a repeater monitoring system according to the present invention, which includes a repeater 100, a monitoring device 200, and a monitoring center 400.

The monitoring device 200 measures the power level supplied to the repeater 100 and the output levels of the bidirectional channels TX and RX of the repeater 100 relaying wireless communication between the wireless base station 10 and the mobile terminal 50, respectively. Detect to determine the status of power supply and abnormalities such as shutdown (Shut Down), and the resulting information is a predetermined time interval through the existing telephone line 300 with the unique number of the repeater 100 It is made to report to the monitoring center (400).

The monitoring center 400 is configured as a personal computer (PC), and a program for displaying and outputting various monitoring result information of the repeater 100 transmitted from the monitoring apparatus 200 for each list is embedded.

In addition, the monitoring apparatus 200 is operated by receiving DC power provided from the repeater 100 during normal operation, and is operated by receiving DC power provided from the telephone station through the telephone line 300 during power failure. It is configured to notify the monitoring center.

2 is a block diagram showing a detailed circuit of the monitoring apparatus according to an embodiment of the present invention, a forward detection unit 210, a reverse detection unit 215, a power detection unit 220, a line fail detection unit 230, a hook switch ( 240, ring detector 250, DTMF generator 260, incoming line detector 270, and system controller 280.

The forward detection unit 210 is installed between the wireless base station 10 and the mobile terminal 50 to set upper and lower limits of the signal level output through the forward channel TX of the repeater 100 for filtering and amplifying wireless communication data. The reverse direction detection unit 215 is configured to detect the upper and lower limits of the signal level output through the reverse channel RX of the repeater 100, respectively, and the power source detection unit 220 includes the repeater 100. It is configured to detect a power supply supplied to the repeater 100 by detecting an AC power supplied to the AC power or DC power supply or when the power supply is stopped.

That is, the forward detecting unit 210 of the present invention detects when the output level of the forward channel TX of the repeater 100 is 0 m (approximately 1 m) or less or 15 m (approximately 17 m) or more, The reverse detector 215 is configured to detect when the output level of the reverse channel RX of the repeater 100 is 0 m (approximately 1 m) or less or 12 m (approximately 13 m) or more. It is possible to arbitrarily adjust the detection upper and lower limits according to the method.

In addition, the line fail detection unit 230 is composed of low-pass passive elements that check and detect the use state (Busy or Free) of the own telephone line 300, and the hook switch 240 is a predetermined control during the call The ring detection unit 250 is configured to open and close according to a signal, and the ring detection unit 250 detects a ring signal sent from a telephone station by forming a current loop of a telephone line as the hook switch 240 is turned off. The DTMF generator 260 is configured to generate and transmit a DTMF signal at 260, and the DTMF generator 260 is a telephone number signal for DTMF (Dual Tone Multiple Frequency) by a combination of a low frequency group and a high frequency group according to a predetermined control signal. And the incoming line detection unit 270 detects whether the telephone line of the monitoring center 400 to which various abnormality detection data of the repeater 100 is to be used is determined to determine the transmission time of the abnormality detection data. And it is configured to support.

Meanwhile, the system controller 280 receives the abnormal detection signal output from the forward and reverse detection units 210 and 215 and the power detection unit 220, stores the abnormal detection signal in the memory 285, and stores the line fail detection unit 230 and the ring detection unit. Repeater 100 stored in the memory 285 after controlling the DTMF generator 260 according to the line state detection signal provided from the 250 and the incoming line detection unit 270 to connect the call to the monitoring center 400. Control to transmit unique number and abnormality detection information.

In addition, the bridge diode BD on the telephone line 300 always supplies power in a constant direction regardless of the direction of the constant voltage (+) and the negative voltage (-) applied to the ring terminal (Ring) and the tip terminal (Tip), respectively. It is a means to be supplied, and the forward detection unit 210, the reverse detection unit 215 and the ring detection unit 250 is preferably configured to include a photoelectric element (not shown) such as a photo transistor.

That is, the forward detection unit 210 monitors the output level of the forward channel TX of the micro repeater 100 and transmits a fail signal to the system controller 280 when the level is above or below a threshold value. The backward detector 215 monitors the in-band noise level of the reverse channel RX of the micro repeater 100 and transmits a fail signal to the system controller 280 when the level is above or below a threshold value, and the system controller 280. ) Receives the fail signals and reports to the monitoring center 400 through the telephone line 300.

Of course, before the system controller 280 transmits the fail signal to the monitoring center 400, the system controller 280 detects whether the general telephone line 300 connected to the monitoring apparatus 200 is used and simultaneously with other telephone terminals shared on the same telephone line. Do not operate.

In addition, the monitoring device 200 receives and uses the DC power (approximately 8V to 12V) provided from the repeater 100, and when an abnormality occurs in the power supply of the repeater 100, the ring terminal of the telephone line 300 ( The DC power (approximately 48V) provided through the ring and the tip terminal (Tip) may be used to transmit data on the power failure to the monitoring center 400.

Looking at the operation of the present invention configured as described above using the flowchart of Figure 3 as follows.

First, the system controller 280 collects data on whether the repeater 100 outputted from the forward detector 210, the reverse detector 215, and the power detector 220 are operated at predetermined time intervals (S1).

That is, when the forward and reverse output levels of the repeater deviate from the set upper and lower limits, the forward detector 210 and the reverse detector 215 respectively detect the fail data and output the fail data to the system controller 280. If a problem occurs in the DC power supplied to the monitoring apparatus 200 at 100 and the supply of the DC power is stopped, the power detector 220 detects this and outputs it to the system controller 280. In addition, the system controller 280 may receive signals output from the forward and reverse detectors 210 and 215, respectively, and determine a shut down state of the repeater.

Shutdown function of the repeater 100 is to drive the bi-directional channels (TX, RX) at regular intervals in order to prevent the breakage of the components of the repeater 100 during abnormal input (over-input) to the repeater 100 As a function of pausing, this function belongs to the function of the repeater 100 itself and by analyzing the signals detected by the forward and reverse detectors 210 and 215, it is easy to know whether the repeater 100 is in a shut down state.

Subsequently, the system controller 280 determines whether an abnormality has occurred in the operation of the repeater 100 based on the collected data (S2). If the abnormality occurs in the operation of the repeater, the repeater 100 is referred to the collected data. Generate data about the malfunction of the (S3).

If, in the step (S2) of determining whether an abnormality has occurred in the operation of the repeater 100, if there is no abnormality in the operation of the repeater 100, as a predetermined time elapses with reference to the data collected in the (S1) repeater The data on the good operation of the 100 is generated (S2-1, S2-2).

Subsequently, the system controller 280 searches for a signal output from the line fail detection unit 230 to determine whether the own telephone line is in use (S4), and if the own telephone line is not in use, the system controller 280 controls the hook-on control. The hook hook 240 is closed by outputting a signal hook (S5). The reason for detecting whether the telephone line is used or not using the line fail detection unit 230 is that several telephone terminals are commonly used in one telephone line.

As described above, when the hook switch 240 is closed, a ring signal, which is a dial tone, is transmitted from the telephone station through the current loops of the ring terminal and the tip terminal, and the ring detection unit 250 detects the ring signal. Output to the controller 280 (S6).

When a ring detection signal is input from the ring detection unit 250, the system controller 280 controls the DTMF generation unit 260 to dial a telephone number of the monitoring center 400 to initiate a call call (S7).

Subsequently, the system controller 280 receives the signal output from the incoming line detection unit 270 to determine whether the telephone line of the destination is used, that is, whether the telephone number of the monitoring center 400 is busy (S8).

If the telephone line of the monitoring center 400 is not in use in step S8, the malfunction related information (operation good related information or malfunction related information) collected from the repeater 100, the abnormal occurrence time and the unique number of the repeater, etc. The information is transmitted to the monitoring center 400 (S9).

In the process of determining whether the own telephone line is in use (S4) or the ring signal is not detected in the process (S6) of determining whether the own telephone line is in use or the ring signal is detected, When the telephone line of the monitoring center is in use in the process of determining whether the telephone line is in use (S8), the notification of the operation-related information of the repeater 100 is suspended for a predetermined time (S10) and then the second process (S2). It is preferable to repeat the operation from.

In the above reporting time for the monitoring device 200 to transmit the abnormality-related information of the repeater 100 to the monitoring center 400 is to transmit the information every three hours when the abnormality of the repeater 100, the monitoring center 400 When the telephone line is in use, it attempts to connect to the monitoring center every 3 hours after 30 minutes and transmits the fault information. In addition, the normal state report of the repeater 100 is based on a week unit, but if it is determined that the report is not reported, in principle to try once a day, but is not limited to this, the user can arbitrarily adjust the reporting time .

In addition, the monitoring center 400 classifies the abnormality information such as the output state of the forward and reverse channels of the repeater 100 and the shutdown or power supply transmitted according to the code according to the type, and each unique of the repeater 100. According to the number, the information such as the installation location of the trouble repeater and the time of trouble occurrence is summarized and printed on the screen or printer.

Although specific embodiments of the present invention have been described and illustrated in FIG. 2, it is obvious that the present invention may be variously modified and implemented by those skilled in the art.

Such modified embodiments should not be individually understood from the technical spirit or the prospect of the present invention, and such modified embodiments should fall within the appended claims of the present invention.

Therefore, the present invention automatically detects the operation state of the bidirectional channel of the repeater and the operation state of each device and reports to the monitoring center, so that in case of abnormality such as the power supply state and shutdown of the repeater, In addition to minimizing the impact, DC power is supplied through the telephone line during power outages, so that the surveillance system can be operated during a power outage, and the wired telephone line utilizes an existing telephone line in which a repeater is installed. Or under the cooperation of the subscriber) and the number from the monitoring device has the advantage that there is no new telephone subscription fee and low maintenance by using the call charge service (080).

Claims (3)

In the monitoring system that monitors the status of the repeater and reports to the monitoring center, Forward and reverse detection means for detecting upper and lower limits of signal levels output through the forward and reverse channels of the repeater, respectively; Power detection means for detecting a power state applied to the repeater; Line fail detection means for detecting whether a telephone line is used; A hook switch that is opened and closed when a call is made according to a predetermined control signal; Ring detecting means for detecting a ring signal sent from a telephone station as the hook switch is closed; DTMF generating means for generating a DTMF signal according to a predetermined control signal when a ring signal is detected by the ring detecting means; Incoming line detecting means for detecting whether a telephone line is used at the destination after initiating a call in the DTMF generating means; And After storing the abnormal detection signal of the repeater output from the forward detecting means, the reverse detecting means and the power detecting means, the hook according to the line state detecting signal provided from the line fail detecting means, the ring detecting means and the incoming line detecting means. And a system controller which controls a switch and a DTMF generating unit to transmit abnormal detection information and a unique number of the repeater after connecting to the monitoring center. A first step of detecting and collecting a malfunction of the repeater; A second step of generating operation-related information based on the collected information; A third step of detecting whether a designated own telephone line is in use to notify the data generated in the second step; A fourth step of determining whether a ring signal is detected after hooking off a hook switch if the telephone line is not in use; A fifth step of determining whether a telephone line of the destination is in use after generating a DTMF signal of a destination when the ring signal is detected; And And repeating the sixth step of transmitting the operation-related information and the unique number of the repeater collected in the second step to the destination if the telephone line of the destination is not in use. The method of claim 2, The first step is, And detecting and collecting output levels, power supply states, and shutdown states of the forward and reverse channels of the repeater.