KR20090115242A - Method and Apparatus for Monitoring Forward/Reverse Signal Degradation of Relay for Mobile Telecommunication Service - Google Patents

Abstract

PURPOSE: A method for monitoring forward/backward direction signal degradation of a relay for a mobile communication service is provided to guarantee forward communication quality by monitoring a change of a surrounding wireless environment based on the measurement of output level. CONSTITUTION: A reference value determining unit measures reference data about an output level after processing of the input level according to a gain(S320). A comparison unit measures each value about the signal as compared data. The comparison unit generates a comparison result by comparing comparison data with reference data(S331). The comparison unit determines comparison data under an abnormal condition. The comparison unit produces the comparison result(S332).

Description

Method and apparatus for monitoring forward / reverse signal degradation of repeater for mobile communication service {Method and Apparatus for Monitoring Forward / Reverse Signal Degradation of Relay for Mobile Telecommunication Service}

The present invention relates to a method and apparatus for monitoring degradation of a relay (relay / repeater) for a mobile communication service, and more particularly, a method for measuring an input level, a gain, and an output level of a forward signal, a method as described above for a reverse signal, Based on the reception sensitivity (Tx_Adjust) detected by the status monitoring terminal or the method of introducing and detecting an artificial singleton, the mobile communication network is stably operated and communication quality is guaranteed by monitoring and responding to deterioration of the repeater or changes in the surrounding wireless environment. It relates to a deterioration monitoring method and apparatus for a repeater.

Many base stations are installed and operated in a wireless network for mobile communication services such as CDMA and WCDMA. However, in an environment where obstacles that make it difficult to propagate radio signals around, it is difficult to smoothly exchange radio signals between the base station and the mobile terminal, resulting in poor communication quality. In order to solve the shadow area where the degradation of communication quality occurs, an economical and simple repeater is used rather than the installation of a base station.

The repeater forwards a signal from the base station between the base station and the terminal to forward a good signal to the terminal, and reversely processes a signal from the terminal to deliver a good signal to the base station. When such a repeater does not operate normally, the quality of the mobile communication service is inevitably deteriorated.

Repeater circuits or devices for forward or reverse signal processing can cause signal degradation over long periods of time, resulting in poor communication quality and customer dissatisfaction. In order to resolve such customer complaints, there is a limit in determining whether the repeater is normally operated in advance by measuring, checking, and inspecting on-site as before.

Therefore, for stable network operation, there is a demand for a method for easily monitoring and responding to communication failure due to deterioration of a repeater or a change in a surrounding wireless environment and maintaining good communication quality.

Accordingly, an object of the present invention is to solve the above-described problems, and an object of the present invention is to measure the input signal level, the gain level, and the output level of the forward signal in order to ensure the forward communication quality of the repeater and ensure stable operation of the mobile communication service. The present invention provides a method and apparatus for monitoring and responding to a forward degradation of a repeater or a change in a surrounding wireless environment.

In addition, another object of the present invention is to provide a reverse communication quality of the repeater for stable operation of the mobile communication service, the method based on the measurement of the input level, gain, and output level of the reverse signal, the state monitoring terminal of the repeater To provide a method and apparatus for monitoring and responding to a reverse degradation of a repeater or a change in the surrounding wireless environment based on a method based on a reception sensitivity (Tx_Adjust) to detect or a method of introducing and detecting an artificial single tone. have.

First, to summarize the features of the present invention, the method for monitoring the deterioration of the repeater according to an aspect of the present invention for achieving the object of the present invention, the input level of the target signal to be relayed, the gain of the relay equipment and the input Storing reference data for an output level after a level has been processed in accordance with the gain; Measuring each value of a signal at a corresponding position of the repeater corresponding to the input level, the gain and the output level as comparison data corresponding to the reference data while operating the repeater; And generating state information related to deterioration of the repeater based on the comparison of the reference data and the comparison data.

In addition, the reverse degradation monitoring method of the repeater according to another aspect of the present invention, the step of storing a plurality of averages of the received sensitivity (Tx_Adjust) measured by the monitoring terminal communicating with the repeater before operation after the opening of the repeater as reference data; Determining an average of a plurality of times of reception sensitivity measured by the monitoring terminal as comparison data while operating a repeater; And generating state information related to deterioration of the repeater based on the comparison of the reference data and the comparison data.

The generating may include generating state information including an alarm signal when a comparison result of the reference data and the comparison data corresponds to an abnormal condition a plurality of times.

In addition, the reverse degradation monitoring method of the repeater according to another aspect of the present invention, by combining the target signal and the incoming signal of a specific tone at the input terminal of the processing path of the reverse target signal to be relayed, the reverse signal processing of the synthesized signal step; Extracting an output signal corresponding to the incoming signal except for the target signal at the end of the processing path; And generating state information related to degradation of the repeater based on the comparison of the incoming signal and the output signal.

The generating may include generating state information including an alarm signal when the level of the output signal is smaller than the signal level at which the gain of the relay equipment is applied to the incoming signal.

In addition, the apparatus for monitoring the deterioration of the repeater according to another aspect of the present invention, the input data of the target signal to be relayed, the gain of the relay equipment and the reference data for the output level after the input level is processed according to the gain A reference value determiner for storing the memory in a memory; While operating a repeater, each value of a signal at a corresponding position of the repeater corresponding to the input level, the gain and the output level is measured as comparison data corresponding to the reference data, and the reference data and the comparison data are measured. A comparison unit for comparing and generating a comparison result; And a state information generator for generating state information related to deterioration of the repeater based on the comparison result.

In addition, the apparatus for monitoring the reverse degradation of the repeater according to another aspect of the present invention, stores the multiple times the average of the received sensitivity (Tx_Adjust) measured by the monitoring terminal communicating with the repeater before operation after the opening of the repeater as reference data A reference value determining unit; A comparator which determines a plurality of averages of the reception sensitivity measured by the monitoring terminal as comparison data while operating the repeater, and compares the reference data with the comparison data to generate a comparison result; And a state information generator for generating state information related to deterioration of the repeater based on the comparison result.

In addition, the apparatus for monitoring the reverse degradation of the repeater according to another aspect of the present invention, a synthesizer for synthesizing the target signal and the incoming signal of a specific tone at the input terminal of the processing path of the reverse target signal to be relayed; A tone detector for extracting an output signal corresponding to the incoming signal except for the target signal at the end of the processing path while the signal synthesized by the synthesizer is processed backward; And a comparator configured to generate state information related to degradation of the repeater based on the comparison between the incoming signal and the output signal.

According to the method and apparatus for monitoring the deterioration of the repeater according to the present invention, the forward communication quality can be monitored and responded to based on the measurement of the input level, the gain, and the output level of the forward signal, so as to monitor and respond to the forward deterioration of the repeater or the change in the surrounding wireless environment. It can contribute to the stable operation of the mobile communication network through the guarantee of.

And, according to the deterioration monitoring method and apparatus of the repeater according to the present invention, measuring the input level, gain, and output level of the reverse signal, the measurement of the reception sensitivity detected by the state monitoring terminal, or the introduction and detection of artificial single tone Based on the method, it is possible to monitor and cope with reverse degradation of the repeater or change in the surrounding wireless environment, thereby contributing to stable operation of the mobile communication network through guaranteeing the reverse communication quality.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings and the contents described in the accompanying drawings, but the present invention is not limited or limited to the embodiments. Like reference numerals in the drawings denote like elements.

1 is a diagram conceptually illustrating a repeater for a mobile communication service according to an embodiment of the present invention.

The repeater for a mobile communication service may forward-process a signal (forward relay processing target signal) of a base station received by wire or wirelessly, and in particular, may transmit the processed signal wirelessly to the mobile terminal, and in some cases, It can also be sent to other repeaters or other supplementary equipment over a dedicated line. In addition, the repeater for a mobile communication service processes a wired signal (a reverse relay processing target signal) received from a wireless signal received from a mobile terminal, another repeater or other additional equipment, and the like, and wires the processed signal toward the base station. Or wirelessly.

The target signal in the forward or reverse direction to be relayed may be received, input, gain-adjusted, output, and transmitted through the relay equipment and then delivered to the destination. For example, a transmission / reception signal may be separated and transmitted or received by using a diplexer or the like, and frequency conversion may be performed through an input processing circuit, and according to a gain of a designed relay device. Signal amplification for shaping the received distorted signal may be performed, and power amplification may be performed through an output processing circuit.

When the relay equipment operated in the repeater for the mobile communication service is deteriorated or there is a change in the surrounding wireless environment, if the status information is notified to the operator immediately, the customer's dissatisfaction due to the communication failure may be solved.

In order to maintain a good communication quality by immediately responding to the deterioration of the relay equipment or the change of the surrounding wireless environment so that the mobile communication network can be stably operated, the above state information related to the deterioration is related to the state of the relay equipment for the forward signal processing. It can be divided into the status of relay equipment for reverse signal processing to be monitored and reported.

2 to 6 illustrate a method that can be applied to the forward degradation monitoring, this may also be applied to the reverse degradation monitoring as described below. 7-10 illustrate another scheme that can be applied to reverse degradation monitoring. 11 illustrates another scheme that can be applied to reverse degradation monitoring.

First, a block diagram of a forward degradation monitoring apparatus of a repeater that may be implemented in a state monitoring server according to an embodiment of the present invention is shown in FIG. 2, the forward degradation monitoring apparatus 200 according to an embodiment of the present invention may include a reference value determiner 210, a memory 211, a comparator 220, and a state information generator 230. The operation thereof may be described with reference to the flowchart of FIG. 3.

First, when the repeater is opened (S310), before using the service operation, at a predetermined time at the time of opening, for example, at a predetermined time of the day such as the dawn time corresponding to the minimum time (the time when the least traffic is the least), the reference value The determination unit 210 may determine reference data about an input level of a target signal to be relayed (for example, a forward signal received from a base station), a gain of the relay equipment, and an output level after the input level is processed according to the gain. The measurement may be stored in the memory 211 (S320). In this case, the input level, gain, and output level of the forward signal as described above are each signal of the corresponding position of the repeater (input signal at the proper position before the gain is processed, equipment gain measured and reported at the repeater, and the appropriate position after the gain is processed). Can be repeatedly measured a plurality of times, for example, four times, and each average value of the plurality of times can be determined as reference data.

When the reference data is measured and stored as described above, the date index D is reset to 0 (S321). Thereafter, by operating a repeater to provide a mobile communication service (S330). The comparator 220 measures each value of the signal at the corresponding position of the repeater corresponding to the input level, the gain and the output level when measuring the reference data while operating the repeater, as the comparison data corresponding to the reference data, A comparison result may be generated by comparing the reference data with the comparison data (S331). In this case, the comparator 220 periodically outputs a signal of the corresponding location a plurality of times each day at a predetermined time period after a predetermined time, for example, a time when the reference data is measured periodically during operation of the repeater (for example, Four times, etc.), each value measured and averaged can be determined as the comparison data above.

Here, when measuring the comparison data at a predetermined time, it is preferable to measure the signal-to-noise ratio (Ec / Io) of the target signal to be relayed and to measure and determine the comparison data at a time equal to or greater than a predetermined value in the time zone. Since the signal-to-noise ratio may drop when there is a lot of traffic handled by the repeater, it may be appropriate to place the target forward signal received, eg For example, the comparison data may be measured when the signal-to-noise ratio is satisfied for a predetermined value or more with respect to the corresponding signal or the like when measuring the input level.

The comparison unit 220 may determine whether the comparison data corresponds to an abnormal condition (for example, whether there is a change of 10 dB or more) in comparison with the reference data, and generate the comparison result (S332). For example, when the input level of the reference data and the comparison data is the same, and the output level is proportional to the change in the gain in the comparison data, as shown in the exemplary diagram of FIG. The comparator 220 may determine that it is normal and generate a signal indicating that it is normal as a comparison result. If there is no deterioration of the relay equipment, the output level will be proportional to the gain of the relay equipment. However, the gain measured and reported by the repeater may vary slightly due to the influence of the surrounding environment at the time of the measurement, for example, temperature and traffic.

When there is deterioration in the relay equipment, for example, when a circuit such as a low noise amplifier (LNA) or a power amplifier (PA) does not operate normally, for example, an abnormal condition (input level and gain as shown in FIG. 5). In the deterioration condition in which the output level is smaller than the expected value, the comparator 220 may generate, as a comparison result, difference information between each corresponding value of the reference data and the comparison data together with a signal indicating abnormality. The comparison unit 220 may determine the difference between the reference data and the corresponding values of the comparison data with the predetermined values for the abnormal condition as shown in FIG. 5 to determine that there is deterioration in the relay equipment. For example, a value for an abnormal condition as shown in FIG. 5, that is, a change value of an input level, a gain, and an output level may be set to, for example, 10 dB, and be managed as a table in a predetermined memory. For example, it may be set to another appropriate value in consideration of environmental changes.

In addition, if there is a local abnormality in the comparative data such that it is not deteriorated in the relay equipment, but the notification of the change in the wireless environment or the need for the on-site inspection is required, for example, an abnormal condition as shown in FIG. The output level is not smaller than expected for the gain and gain, but the condition that the change of the wireless environment or the local device needs to be checked locally), the comparator 220 indicates that it is abnormal, and each corresponding value of the reference data and the comparison data. Difference information and the like can be generated as a comparison result. The comparison unit 220 compares and determines the differences between the reference data and the corresponding values of the comparison data with predetermined values for an abnormal condition as shown in FIG. 6, so that a change in the wireless environment or a local inspection of the peripheral device is required. Can be determined. Here, the values for the abnormal conditions as shown in FIG. 6, that is, the variation values of the input level, the gain, and the output level may be set to, for example, 10 dB and managed as a table in a predetermined memory. In consideration of changes in the environment such as expansion, other values may be set as appropriate.

Particularly, when local inspection of changes in the wireless environment is required as illustrated in FIGS. 6A to 6F, the deterioration of the relay equipment is not necessary. Newly opened means that there is a local area where the wireless environment has changed. In this case, if there is no change in the wireless environment, there may be a defect in the device measuring the input level, gain, and output level of the relay equipment. You need to change In addition, when local inspection of the peripheral device is required as shown in FIGS. 6G to 6O, the oscillation phenomenon of the output signal, the input level, the gain, and the output level are measured, although it is not caused by the deterioration of the relay equipment. This means that the device may be defective. In this case, it is also necessary to change the necessary settings through the local inspection of the corresponding device in the field, and if there is a local where the input level varies by a certain level, for example, 10 dB or more, check whether there is a change in the wireless environment and You need to change the settings.

Meanwhile, as the comparison unit 220 generates a comparison result, the state information generation unit 230 may generate state information related to deterioration of the repeater based on the comparison result. Status information may be notified to the operator's terminal via a dedicated line or other network. For example, when the comparison result of each corresponding value of the reference data and the comparison data corresponds to an abnormal condition a plurality of times (S333, S334), the state information generator 230 includes a state indicating an alarm signal. Information may be generated (S340). As in S333 and S334, D is increased by 1 when the above abnormal condition is met, and when the comparison is measured once a day, when the comparison result corresponds to the abnormal condition for three days or more, the status information generator 230 ) May generate an alarm signal. In order to make it easy for the operator to know the degree of deterioration, the status information may include difference information between each corresponding value of the reference data and the comparison data.

In addition, according to a result of comparing and comparing the differences between the reference data and the corresponding values of the comparison data with the predetermined values (see FIGS. 5 and 6) for the above abnormal condition, the state information generation unit ( 230 may include information, such as notification of deterioration of the relay equipment or notification of changes in the wireless environment or the need for on-site inspection, in the status information.

For example, as shown in FIG. 4, when it corresponds to the deterioration of the relay equipment, the state information generator 230 may include a notification indicating the deterioration of the relay equipment in the state information so as to be delivered to the operator. Alternatively, as shown in FIG. 5, when the comparison data shows a local abnormality due to a change in the wireless environment around the repeater, but not deterioration of the relay equipment, the state information generating unit 230 notifies the notification of the change in the wireless environment. Include it in the information so it can be communicated to the operator. And, as shown in FIG. 6, the status information generation unit 230 does not deteriorate the relay equipment, but when the comparison data shows a local abnormality due to a device defect such as a level detector for measuring the comparison data. Notifications indicating the need for on-site inspections are included in the status information so that it can be communicated to the operator. Notification of the above abnormal conditions delivered to the operator can be dispatched and inspected immediately according to the case to take a corresponding action when repair or change of settings is necessary to allow the relay equipment to operate normally (S350).

Meanwhile, the forward degradation monitoring method of the repeater according to FIGS. 2 and 3 is similarly used for monitoring degradation of a target signal (a signal received from a mobile terminal to be transmitted to a base station) to be relayed in the reverse signal processing of the repeater. Can be used.

In addition, other methods of monitoring the reverse degradation of the repeater will be described below.

7 is a view for explaining the reception sensitivity (Tx_Adjust) collection from the monitoring terminal of the state monitoring server for the reverse degradation monitoring of the repeater according to another embodiment of the present invention. In general, the status monitoring terminal 720 which is a test terminal for monitoring the operation state of the repeater 710 is operated around the repeater, and the various monitoring data which the status monitoring terminal 720 measures and reports to the status monitoring server 730. For example, received power (RSSI: Received Signal Strength Indication), transmit power (TX_Power), signal to interference ratio (Ec / Io), RSSI + Ec / Io, Received Signal Code Power (RSCP), block error rate The signal quality of the mobile network is normal depending on the type of BLER (Block Error Rate), reception sensitivity (Tx_Adjust), and call processing message (message for call connection establishment or release, session establishment, channel assignment, handoff, etc.). It can be managed to maintain.

In particular, a block diagram of a reverse degradation monitoring apparatus of a repeater according to another embodiment of the present invention, which may be implemented in the state monitoring server of FIG. 7 by using the reception sensitivity Tx_Adjust measured and reported by the state monitoring terminal as described above. 8 is shown.

Referring to FIG. 8, a reverse degradation monitoring apparatus 731 of a repeater according to another embodiment of the present invention may include a reference value determiner 810, a memory 811, a comparator 820, and a state information generator 830. ), And their operation can be described with reference to the flowchart of FIG.

In the reverse degradation monitoring device 731 of the repeater according to another embodiment of the present invention, it is difficult to check any one of the input level, the gain, and the output level of the reverse processing target signal, and the state monitoring terminal as shown in FIG. 7 around the repeater. This may apply if it is in operation. If there is no forward degradation of the repeater and the receiving RSCP of the monitoring terminal is constant, the reception sensitivity (Tx_Adjust) is maintained at a constant level when there is no backward degradation, but in the case of reverse degradation, the relay equipment satisfies the signal of the monitoring terminal. In response, the monitoring terminal increases the Tx_Power by controlling the transmission power for smooth communication. However, since Tx_Power has a different relationship depending on the received RSCP, even if there is no reverse degradation, the Tx_Power is increased due to the degradation of the received RSCP due to the forward degradation, so that the reverse degradation cannot be accurately monitored by monitoring the increase or decrease of the Tx_Power. Therefore, it is preferable to use the reception sensitivity (Tx_Adjust) as a factor for monitoring the reverse degradation of the repeater. According to the relationship of "Tx_Power + RSCP = Tx_Adjust-90", the reception sensitivity (Tx_Adjust) is a value related to the transmission / reception power of the monitoring terminal. That is, if there is no forward deterioration of the repeater and the receiving RSCP of the monitoring terminal is constant, when the receiving power at the repeater decreases due to backward deterioration, the base station or repeater controls to increase the Tx_Power of the terminal, thereby receiving sensitivity The principle of increasing (Tx_Adjust) is used.

In order to use this increase / decrease in reception sensitivity Tx_Adjust for reverse degradation monitoring, first, in FIG. 9, when the repeater is opened (S910), a specific time at the time of opening, for example, the minimum time, before using the service operation, is opened. At a predetermined time of the day, such as a dawn time corresponding to (the time when the least traffic is the least), the reference value determiner 810 uses the reception sensitivity Tx_Adjust measured by the monitoring terminal communicating with the repeater as reference data as shown in FIG. 7. In operation S920, the memory 811 may be stored in the memory 811. In this case, a value for the reception sensitivity measured and reported by the monitoring terminal as described above may be received a plurality of times, for example, four times, and the average value of the plurality of times may be determined as reference data.

When the reference data is measured and stored in this manner, the date index D is reset to 0 (S921). Thereafter, a repeater operates to provide a mobile communication service (S930). The comparator 820 may determine a plurality of averages of the reception sensitivity Tx_Adjust measured by the monitoring terminal as shown in FIG. 7 while operating the repeater, and generate a comparison result by comparing the reference data with the comparison data. There is (S931). At this time, the comparator 820 periodically outputs a signal of the corresponding location a plurality of times each day at a predetermined time period after a predetermined time periodically, for example, a time when the reference data is measured during operation of the repeater (eg, 4 times and the like) can be determined as the comparison data above.

Here, when measuring the comparison data at a predetermined time, it is preferable to measure the signal-to-noise ratio (Ec / Io) of the target signal to be relayed and to measure and determine the comparison data at a time equal to or greater than a predetermined value in the time zone. If the repeater handles a lot of traffic, the signal-to-noise ratio (Ec / Io) may increase due to the base station's noise level increase, even without backward degradation. In order to be close to, the comparison data may be measured when the signal-to-noise ratio (Ec / Io) is satisfied for a predetermined value or more with respect to the received reverse signal to be processed.

The comparison unit 820 may determine whether the comparison data corresponds to an abnormal condition (for example, whether + 10dB or more increases) compared to the reference data, and generate the comparison result (S932). For example, in the case where there is no deterioration, the comparison unit 820 may determine that it is normal and generate a signal indicating that it is normal as a comparison result when it corresponds to a determination criterion (the comparison data fluctuates below +10 dB). .

When there is deterioration in the relay equipment, for example, when a circuit such as a low noise amplifier (LNA) or a power amplifier (PA) does not operate normally, for example, an abnormal condition as shown in FIG. 10 (for example, Whether the increase is + 10dB or more), the comparator 820 may generate the difference information between the reference data and the comparison data and the like as a comparison result together with the signal indicating abnormality.

Meanwhile, as the comparison unit 820 generates a comparison result, the state information generation unit 830 may generate state information related to deterioration of the repeater based on the comparison result. Status information may be notified to the operator's terminal via a dedicated line or other network. For example, when the comparison result of each corresponding value of the reference data and the comparison data corresponds to an abnormal condition a plurality of times (S933 and S934), the state information generating unit 830 includes an alarm signal indicating that it is abnormal. Status information may be generated (S940). As in S933 and S934, D is increased by 1 when the above abnormal condition is met, and when the comparison result is measured once a day, when the comparison result corresponds to the abnormal condition for 6 days or more, the state information generator 830 May generate an alarm signal. In order to make it easy for the operator to know the degree of deterioration, the status information may include difference information between each corresponding value of the reference data and the comparison data.

Such state information may be transmitted to an operator's terminal, and the like may be immediately dispatched and inspected according to a case to take a corresponding action when a repair or a change of a setting is necessary, so that the relay equipment operates normally (S950). .

11 is a block diagram of a reverse degradation monitoring apparatus of a repeater according to another embodiment of the present invention which may be implemented by being coupled to the repeater 1100.

The repeater 1100 processes the reverse signal from the mobile terminal and transmits the reverse signal from the mobile terminal to the base station using the LNA 1120 and the other reverse signal processing circuit 1130 in a manner similar to FIG. 1.

In the reverse degradation monitoring apparatus of the repeater described in FIG. 11, it is difficult to check any one of the input level, the gain, and the output level of the reverse processing target signal, and the state monitoring terminal as shown in FIG. 7 is not the front end of the LNA 1120. It may be applied to the case where the terminal is mounted in the terminal direction.

The reverse degradation monitoring apparatus of the repeater according to still another embodiment of the present invention described in FIG. 11 includes a synthesizer 1110 coupled to a front end of the LNA 1120 and a tone detector coupled to an end of a path in which the reverse signal to be processed is processed. 1140, and a comparator 1150, and the state information generated by the comparator 1150 may be transmitted to an operator through the state monitoring server 1180.

The synthesizer 1110 synthesizes the target signal and the incoming signal of a specific tone at the input terminal of the processing path of the reverse target signal to be relayed. The incoming signal may be a signal of a predetermined frequency band, and may be synthesized with the target signal to be relayed by the synthesizer 1110 corresponding to the frequency synthesizing means and output to the LNA 1120.

While the signal synthesized by the synthesizer 1110 through the LNA 1120 and the other reverse signal processing circuit 1130 is reverse signal processed and transmitted to the base station through an antenna, the tone detector 1140 may perform a reverse signal processing path. The output signal corresponding to the above-mentioned incoming signal excluding the reverse target signal to be relayed from the output of the terminal having the constant output level by applying the gain according to the termination, that is, the LNA 1120 and the other reverse signal processing circuit 1130. Can be extracted. At this time, the comparator 1150 compares the output signal of the frequency band corresponding to the incoming signal output by the tone detector 1140 with the incoming signal of the specific tone used at the input terminal, and deteriorates the repeater based on the comparison result. Status information related to the can be generated.

Since the gain of the repeater equipment for processing the reverse target signal to be processed, such as the LNA 1120 and the other reverse signal processing circuit 1130 is known, the comparator 1150 determines whether or not deterioration according to the above result. can do. For example, the comparator 1150 may have a level of the output signal from the tone detector 1140 at a reference value (for example, 10 dB) than a signal level at which the gain of the relay equipment is applied to an incoming signal of a specific tone used at the input terminal. In the case where the abnormality is small, deterioration can be determined. When it is determined that the deterioration is determined, the comparator 1150 may generate state information including an alarm signal indicating the deterioration, a degree of deterioration, and the like, which may be transmitted to the terminal of the operator through the state monitoring server 1180. . The operator can be dispatched and inspected immediately on a case-by-case basis to take appropriate measures in the event that repairs or changes to the settings are necessary so that the relay equipment can operate normally.

The functions used in the methods and apparatus disclosed herein can be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, hard disk, removable storage, and also carrier wave (for example, transmission over the Internet). It also includes the implementation in the form of. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

1 is a diagram conceptually illustrating a repeater for a mobile communication service according to an embodiment of the present invention.

2 is a block diagram of a forward degradation monitoring apparatus of a repeater that may be implemented in a state monitoring server according to an embodiment of the present invention.

3 is a flowchart illustrating a method for monitoring forward degradation of a repeater according to an embodiment of the present invention.

4 is a diagram for describing a criterion for determining when there is no forward degradation according to an embodiment of the present invention.

5 is a diagram for describing a criterion for determining when there is forward degradation according to an embodiment of the present invention.

FIG. 6 is a diagram illustrating a criterion for determining when there is no forward deterioration according to an embodiment of the present invention, but when the inspection of a peripheral device or the inspection of a wireless environment is required.

7 is a view for explaining the reception sensitivity collection from the monitoring terminal of the state monitoring server for the reverse degradation monitoring of the repeater according to another embodiment of the present invention.

8 is a block diagram of a reverse degradation monitoring apparatus of a repeater according to another embodiment of the present invention that may be implemented in the state monitoring server of FIG.

9 is a flowchart illustrating a reverse degradation monitoring method of a repeater according to another embodiment of the present invention.

10 is a view for explaining a criterion for the case of the reverse degradation according to another embodiment of the present invention.

11 is a block diagram of a reverse degradation monitoring apparatus of a repeater according to another embodiment of the present invention that may be implemented in a repeater.

Claims (18)

In the deterioration monitoring method of the repeater, Storing reference data on an input level of a target signal to be relayed, a gain of the relay equipment, and an output level after the input level has been processed according to the gain; Measuring each value of a signal at a corresponding position of the repeater corresponding to the input level, the gain and the output level as comparison data corresponding to the reference data while operating the repeater; And Generating state information related to degradation of the repeater based on the comparison of the reference data and the comparison data. Degradation monitoring method comprising a. The method of claim 1, wherein the storing step, Determining the averaged value as the reference data by measuring the signal of each corresponding position a plurality of times at a predetermined time of the day before operation after opening of the repeater. Degradation monitoring method comprising a. The method of claim 1, wherein the measuring step, Periodically measuring the signal at each of the respective positions at a predetermined time periodically during operation of the repeater and determining the averaged value as the reference data Degradation monitoring method comprising a. The method of claim 1, wherein the measuring step, Measuring a signal-to-noise ratio (Ec / Io) of the target signal to be relayed during operation of the repeater, And the comparison data is generated when the signal-to-noise ratio is greater than or equal to a predetermined value. The method of claim 1, wherein the generating of Generating state information including an alarm signal when a comparison result of each corresponding value of the reference data and the comparison data corresponds to an abnormal condition a plurality of times; Degradation monitoring method comprising a. The method of claim 5, wherein the state information, And the difference information between each corresponding value of the reference data and the comparison data. The method of claim 5, wherein the generating step, The difference between each corresponding value of the reference data and the comparison data is judged by comparison with predetermined values for an abnormal condition, so as to notify the degradation of the relay equipment or the notification of the change of the wireless environment or the need for on-site inspection. Deterioration monitoring method characterized by including in the information. The method of claim 1, wherein the generating of Judging the case where the input level of the reference data and the comparison data is the same and the output level is proportional to the change of the gain. Degradation monitoring method comprising a. The method of claim 7, wherein the generating step, Generating notification information regarding the change in the wireless environment when the comparison data shows a local abnormality due to a change in the wireless environment around the repeater, although the deterioration of the relay equipment is not deteriorated. Degradation monitoring method comprising a. The method of claim 7, wherein the generating step, Generating notification information regarding the necessity of the on-site inspection when the comparison data shows a local abnormality due to a failure of the means for measuring the comparison data but not the deterioration of the relay equipment. Degradation monitoring method comprising a. The method of claim 1, wherein the deterioration monitoring method comprises: A deterioration monitoring method characterized by being used for monitoring deterioration of a target signal to be relayed in forward signal processing or reverse signal processing of a repeater. In the reverse degradation monitoring method of the repeater, Storing, as reference data, a plurality of averages of reception sensitivity (Tx_Adjust) measured by a monitoring terminal communicating with the repeater before operation after opening of the repeater; Determining an average of a plurality of times of reception sensitivity measured by the monitoring terminal as comparison data while operating a repeater; And Generating state information related to degradation of the repeater based on the comparison of the reference data and the comparison data. Degradation monitoring method comprising a. The method of claim 12, wherein the generating step, Generating status information including an alarm signal when a comparison result of the reference data and the comparison data corresponds to an abnormal condition a plurality of times; Degradation monitoring method comprising a. In the reverse degradation monitoring method of the repeater, Performing a reverse signal processing on the synthesized signal by synthesizing the target signal with an incoming signal of a specific tone at an input of a processing path of a reverse target signal to be relayed; Extracting an output signal corresponding to the incoming signal except for the target signal at the end of the processing path; And Generating state information related to degradation of the repeater based on the comparison of the incoming signal and the output signal Degradation monitoring method comprising a. The method of claim 14, wherein the generating step, Generating state information including an alarm signal when the level of the output signal is smaller than the signal level at which the gain of the relay equipment is applied to the incoming signal. Degradation monitoring method comprising a. In the device for monitoring the deterioration of the repeater, A reference value determiner for storing reference data on an input level of a target signal to be relayed, a gain of the relay equipment, and an output level after the input level is processed according to the gain; While operating a repeater, each value of a signal at a corresponding position of the repeater corresponding to the input level, the gain and the output level is measured as comparison data corresponding to the reference data, and the reference data and the comparison data are measured. A comparison unit for comparing and generating a comparison result; And A state information generator for generating state information related to deterioration of the repeater based on the comparison result Deterioration monitoring apparatus comprising a. In the apparatus for monitoring the reverse degradation of the repeater, A reference value determiner which stores, as reference data, a plurality of averages of reception sensitivity (Tx_Adjust) measured by a monitoring terminal communicating with the repeater before operation after opening of the repeater; A comparator which determines a plurality of averages of the reception sensitivity measured by the monitoring terminal as comparison data while operating the repeater, and compares the reference data with the comparison data to generate a comparison result; And A state information generator for generating state information related to deterioration of the repeater based on the comparison result Deterioration monitoring apparatus comprising a. In the apparatus for monitoring the reverse degradation of the repeater, A synthesizer for synthesizing the target signal with an incoming signal of a specific tone at an input of a processing path of a reverse target signal to be relayed; A tone detector for extracting an output signal corresponding to the incoming signal except for the target signal at the end of the processing path while the signal synthesized by the synthesizer is processed backward; And A comparator configured to generate state information related to degradation of the repeater based on the comparison of the incoming signal and the output signal; Deterioration monitoring apparatus comprising a.

Images