KR102091535B1 - Method and apparatus for controlling oscillation of wireless repeater - Google Patents

Abstract

The present invention relates to a method and apparatus for controlling the oscillation of a wireless repeater. The oscillation control device of a wireless repeater according to an embodiment of the present invention controls a sensor communication module that performs communication with a sensor, a transmission module that converts and amplifies and transmits a wireless signal input to an antenna, and controls the power applied to the transmission module It may include a switch module and an output control module for controlling the repeater gain according to the control signal received from the sensor. Therefore, the wireless repeater oscillation control apparatus and methods according to the present invention can more effectively control the oscillation of the wireless repeater through interworking with a sensor.

Description

Method and apparatus for controlling oscillation of wireless repeater

The present invention relates to a wireless repeater oscillation control, and more particularly, to an oscillation control method using a sensor and an apparatus and system supporting the same in an isolation variable environment of an in-building wireless repeater for mobile communication will be.

With the rapid development of information and communication technology, users of communication services are demanding more rapid, diverse and stable services. Telecom network operators and developers are developing more diverse communication technologies and services to accommodate the needs of these customers.

Recently, wireless network operators are introducing various repeater technologies to improve the quality of wireless services and expand capacity and service coverage in a limited frequency band.

In general, a mobile communication repeater is installed in an area where a signal of a base station is weakly received to eliminate a shaded area and expand cell coverage of the base station.

Here, the shaded area means an area where the radio path between the base station and the terminal is cut off. That is, the area where radio waves cannot be reached due to buildings or terrain. In order to eliminate the shadow area, a base station is additionally installed or a wireless network is designed using a repeater.

The RF repeater is a forward link for transmitting a signal from a base station to a mobile terminal, and receives a signal received from the base station through a donor antenna, amplifies it, and then transmits the amplified signal to the mobile terminal through a service antenna. . In the reverse link for transmitting a signal from the mobile terminal to the base station, the RF repeater amplifies the mobile terminal signal received through the service antenna and transmits it to the base station through the donor antenna.

Currently, in Korea, installation of small or ultra-compact RF repeaters to economically expand wireless network coverage and secure service quality is rapidly increasing. However, there is a problem that it is difficult for the network operator to manage the problems occurring in the RF repeaters installed everywhere.

Since the RF repeater has both a forward link and a reverse link, it is required to secure proper isolation between both links. That is, the signal transmitted to the mobile terminal through the service antenna is fed back to the donor antenna in a certain part (Feedback), and conversely, the signal transmitted to the base station through the donor antenna can also be fed into the service antenna in a part.

At this time, the feedback ratio of these signals is called isolation, and the isolation value is the difference between the signal transmitted from the signal transmitted to the base station through the donor antenna to the service antenna, or the signal transmitted from the signal transmitted to the mobile terminal through the service antenna to the donor antenna. It can be calculated as the difference between the signals.

Therefore, the output signal strength of the RF repeater is further increased by the input of the feedback signal, and in the end, noise corresponding to the maximum output value of the RF amplifier may be generated, which is called oscillation.

Such an oscillation can have a fatal effect on the quality of mobile communication and serious damage to the repeater. Also, the oscillation of a specific RF repeater can cause interference to nearby RF equipment or provide another source of oscillation.

Therefore, it is very important to maintain an appropriate isolation value for the RF repeater to prevent oscillation.

The present invention has been devised to solve the problems of the prior art described above, and an object of the present invention is to provide a method for controlling oscillation of a wireless repeater.

Another object of the present invention is to provide a wireless repeater oscillation control method using a door sensor in an in-building environment.

Another object of the present invention is to provide a method for analyzing the cause of the oscillation of a wireless repeater through a sensor.

Another object of the present invention is to provide a method of adaptively controlling a wireless repeater gain using information collected from a sensor.

Another object of the present invention is to provide an apparatus and a recording medium supporting the above methods.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned will be clearly understood by those skilled in the art from the following description. Will be able to.

The present invention provides a wireless repeater oscillation control method and apparatus and system supporting the same.

As an aspect of the present invention, a method of controlling oscillation of a wireless repeater in conjunction with a sensor may include receiving a control signal including detection information from the sensor and controlling an output gain of the wireless repeater according to the control signal. have.

In addition, if the output of the wireless repeater is not maintained below a reference value, the step of blocking the output of the wireless repeater may be further included.

In addition, as an aspect of the present invention, a sensor interlocked with a wireless repeater includes a door open / close detection sensor that detects opening and closing of a door, an interference signal detection sensor that detects an external incoming interference signal, and measures the signal level accordingly. It may be provided inside or outside of the temperature sensor and the like.

Further, the detection information received by the door opening / closing detection sensor includes a door opening / closing indicator, and when the door opening / closing indicator indicates the opening of the door, at least one of a gain adjusting unit and a gain adjusting cycle used for output gain control of the wireless repeater Can be changed.

At this time, the gain adjustment unit and the gain adjustment period may be dynamically adjusted based on the wireless repeater output level.

In addition, when the door opening and closing indicator instructs the door closing, the gain adjustment unit and the gain adjustment cycle may be set to a predetermined initial value.

In addition, the interference signal detection sensor may measure the level of the external interference signal and provide it to the wireless repeater. At this time, when the external interference signal level is higher than the reference value, the wireless repeater may rapidly decrease the repeater gain by changing the gain adjustment unit and the gain adjustment period.

A device for controlling oscillation of a wireless repeater in connection with a sensor according to another embodiment of the present invention includes a sensor communication module for performing communication with a sensor, a transmission module for converting and amplifying and transmitting a wireless signal input to an antenna, transmission It may be configured to include a switch module for controlling the power applied to the module and an output control module for controlling the antenna gain according to the control signal received from the sensor.

At this time, the above-described device may further include an oscillation detection unit that detects whether or not oscillation is detected by measuring the output level of the wireless signal applied to the transmission module. When the oscillation detection unit detects oscillation, the switch module is configured according to the control signal of the control module. The power can be cut off for a period of time.

Here, the control signal received from the sensor may include at least one of sensor identification information for identifying the type of sensor, and sensing information collected by the sensor corresponding to the sensor identification information.

In addition, when a door open is detected according to a control signal received from the door opening / closing detection sensor, a gain adjustment unit and a gain adjustment period may be variably set according to the external interference signal strength.

A system for controlling oscillation of a wireless repeater according to another embodiment of the present invention

A sensor and a power switch, and a communication module for communicating with the sensor is provided, and may include a wireless repeater that controls repeater gain and power according to a control signal received from the sensor.

Here, the communication module includes RS-232, Wireless Local Area Network (WLAN), Bluetooth, Zigbee, Ultra-WideBand (UWB), Radio Frequency Identification (RFID), Long Term Evolution (LTE), WCDMA (Wideband Code Division Multiple Access) may provide at least one communication function.

In particular, the wireless repeater further comprises means for detecting whether the door is opened or closed according to whether or not current flows to the line, but if the current flow of the line is not sensed according to the opening of the door, blocks the output of the wireless repeater and , When the current flow of the line is sensed, an output may be applied to the wireless repeater.

The oscillation control system of a wireless repeater according to another embodiment of the present invention is provided with a communication module that performs communication between the sensor and the power switch and the sensor, and a wireless repeater that controls the repeater gain and power according to a control signal received from the sensor It may be configured to include.

At this time, the communication module may provide at least one communication function among RS-232, Wireless Local Area Network (WLAN), Bluetooth, Zigbee, Ultra-WideBand (UWB), and Radio Frequency Identification (RFID). have.

The effects and advantages of the method and apparatus according to the present invention are as follows.

First, the present invention can control the in-building wireless repeater oscillation through interlocking with the sensor.

Second, the present invention has an advantage of minimizing radio repeater damage, service quality degradation, and interference with other equipment by preventing an oscillation phenomenon based on information received through a sensor.

Third, the present invention can efficiently control the wireless repeater oscillation by interlocking with a plurality of sensors.

Fourth, according to the present invention, by providing various communication means with a sensor to a wireless repeater, it is possible to obtain information required for controlling a wireless repeater output from sensors equipped with various communication means.

Fifth, the present invention has the advantage of controlling the oscillation of the wireless repeater more economically by using a low-cost sensor instead of using expensive measurement equipment for oscillation control.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description. will be.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings included as part of the detailed description to aid the understanding of the present invention provide embodiments of the present invention and describe the technical spirit of the present invention together with the detailed description.
1 shows a general wireless repeater system structure to help understanding of the present invention.
2 is a conceptual diagram illustrating a method of controlling a wireless repeater oscillation according to an embodiment of the present invention.
3 is a structure of a wireless repeater oscillation control device according to an embodiment of the present invention.
4 is a flow chart for explaining a method of controlling a wireless repeater oscillation according to an embodiment of the present invention.
5 is a flowchart for explaining a method of controlling a wireless repeater oscillation according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION The detailed description set forth below, in conjunction with the accompanying drawings, is intended to describe exemplary embodiments of the invention, and is not intended to represent the only embodiments in which the invention may be practiced. The following detailed description includes specific details to provide a thorough understanding of the present invention. In the description of the drawings, procedures or steps that may obscure the technical subject matter of the present invention are not described, and procedures or steps that are understandable to those skilled in the art are not described.

Throughout the specification, when a part "comprising or including" a certain component, it means that other components may be further included instead of excluding other components, unless otherwise specified. do. In addition, terms such as “… unit”, “… group”, and “module” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. have. In addition, "a (a or an)", "one (one)," "the (the)" and similar related terms in the context of describing the present invention (especially in the context of the following claims) are different herein. It can be used in a sense including both singular and plural unless indicated or clearly contradicted by context.

The specific terms used in the embodiments of the present invention are provided to aid the understanding of the present invention, and the use of these specific terms may be changed into other forms without departing from the technical spirit of the present invention.

1 shows a general wireless repeater system structure to help understanding of the present invention.

As shown in Figure 1, the wireless repeater system is largely a signal amplifying unit 20, a base station 60 and a signal amplifying unit 20 for transmitting and receiving a wireless signal between the antenna (Donor Antenna, 10), a signal amplifying unit (20) for transmitting and receiving wireless signals between the mobile terminal (70), a service antenna (30), a signal amplifying section (20) for transmitting signals between the antenna cables (40, 50) and for supplying power to the repeater It includes a power supply terminal 80.

The signal amplifying unit 20 band-converts and amplifies the forward radio signal received through the donor antenna 10, transmits it to the service antenna 30, or converts the reverse radio signal received through the service antenna 30 into a band. And amplified and transmitted to the donor antenna 10.

To explain the operation principle in more detail, the signal of the base station 60 received through the donor antenna 10 is input to a low noise amplifier (LNA) through a duplexer and amplified with low noise.

At this time, the amplified signal is mixed with the oscillation frequency of the local oscillator and down-converted to an intermediate frequency. Thereafter, a surface acoustic wave (SAW) filter having excellent skirt characteristics in an intermediate frequency band passes only signals of a desired frequency band, and then up conversion is performed again.

Thereafter, the up-converted signal is amplified through a high power amplifier and then transmitted to the service antenna.

Although not shown in FIG. 1, some wireless repeaters may transmit a forward link signal to a plurality of service antennas using a distributor. Therefore, a repeater system using a divider can effectively solve a shaded area existing inside a complex building.

2 is a conceptual diagram illustrating a method of controlling a wireless repeater oscillation according to an embodiment of the present invention.

Referring to FIG. 2, the donor antenna 10 is installed to be exposed outside the building 200 to transmit and receive radio signals to and from the base station 60. At this time, the donor antenna 10 is connected to the signal amplification unit 20 inside the building 200 through the cable 40, and the service antenna 30 is connected to the signal amplification unit 20 by the cable 50. After the building 200 may be installed on one side.

At this time, when the door 90 provided on one side of the building 200 is opened, wireless signals inside the building may be transmitted to the donor antenna 10 installed outside the building.

If, when the door 90 is open, a sufficiently amplified downlink signal through the signal amplification unit 20 is introduced into the donor antenna 10 through the open door 90, or upward transmitted from the donor antenna 10 The link signal may be introduced into the service antenna 30 through the open door 90.

In this case, excessive amplification may occur in the signal amplifying unit 20, and accordingly, an oscillation phenomenon in which the repeater output rises to a maximum value may occur. That is, according to the above-described scenario, a positive feedback phenomenon may occur due to unnecessary signal inflow in the signal amplifying unit 20 of the wireless repeater, which may result in oscillation.

Oscillations occurring in wireless repeaters are not only a direct cause of damage to repeaters, but can also have a devastating effect on service quality. In addition, excessive output signals due to oscillations can have a fatal effect on adjacent other equipments, including base stations and peripheral radio repeaters.

Hereinafter, a method for controlling a wireless repeater oscillation using a door opening / closing detection sensor according to an embodiment of the present invention as a method for solving the above problems will be described in detail with reference to FIG. 2.

When the door opening / closing detection sensor 230 according to an embodiment of the present invention opens and closes the door 80 installed on one side of the building 200, it transmits a control signal including predetermined detection information. At this time, a control signal is received through a communication module provided on one side of the main body 20 of the wireless repeater.

Here, the communication module may provide at least one communication means among RS-232, Wireless Local Area Network (WLAN), Bluetooth, Zigbee, Ultra-WideBand (UWB), and Radio Frequency Identification (RFID). have.

The wireless repeater main body 20 according to another embodiment of the present invention does not perform separate wired / wireless communication with the door opening / closing detection sensor 230, and connects wires and disconnects wires generated when the door is opened / closed, that is, open / open the line It is possible to detect whether the door is opened or closed by detecting the short.

For example, a line may be configured on one side of the door so that current flows when the door is closed and current flow is blocked when the door is opened. At this time, the main body of the wireless repeater 20 may be connected to the line and the wire, it is possible to determine whether the door is opened or closed by detecting the current flow on the line. Hereinafter, the door opening / closing detection method by the open / short detection of the above-described line will be referred to as " direct sensor interlocking ".

In the case of the above-mentioned sensor direct interlocking, since the sensing function for detecting the opening and closing of the door can be mounted on the wireless repeater body 20, it is possible to detect whether the door is opened or closed with a simple line configuration without having a separate external door opening and closing detection sensor. There is an advantage.

The wireless repeater main body 20 according to an embodiment of the present invention can immediately cut off the output of the repeater when it detects the opening of the door, and immediately apply the output to the repeater when the door is closed. That is, the wireless repeater main body 20 is caused by the on / off of the repeater output simply by turning on / off the repeater output, without a separate internal processing procedure according to whether the door is opened or closed-for example, including checking the oscillation and adjusting the gain of the repeater. It can be removed faster.

As another example, when the detection information indicates that the door 90 is opened, the wireless repeater adjusts the repeater gain to reduce the repeater output. If the input and output of the repeater are not maintained below a reference value for a predetermined period of time, the wireless repeater may cut off power applied to the repeater.

At this time, it should be noted that the power can be applied again after being cut off for a certain period of time. At this time, the repeater output may not be controlled even after power is applied again. If the repeater output is not controlled even after the power is cut off a predetermined number of times, the wireless repeater may transmit a predetermined alarm signal through a display window or LED provided in the wireless repeater. When an alarm occurs, the wireless repeater according to another embodiment of the present invention may transmit a predetermined alarm message to a predetermined relay operator terminal through the provided communication module.

If the detection information indicates that the door 90 is closed, the wireless repeater may set the repeater gain to a preset initial value. Here, the initial value is preferably set so that proper isolation (isolation) between the donor antenna 10 and the service antenna 30 can be secured.

Hereinafter, a method for controlling a wireless repeater oscillation using an interference signal detection sensor according to another embodiment of the present invention will be described.

Referring to FIG. 2, the interference signal detection sensor 210 is installed on one side of the interior of the building 200 to detect an external interference signal flowing through the door 90 and measure the strength of the external interference signal. . The measured external interference signal information may be transmitted to the wireless repeater body 20 through a predetermined control signal.

At this time, the wireless repeater controls the repeater gain according to the received external interference signal strength information. For example, if the external interference signal level is higher than the reference value, the wireless repeater reduces the output gain in a predetermined gain adjustment unit. Here, the gain adjustment unit is a unit value that can increase or decrease the output gain at one time. For example, the gain adjustment unit may be 1 dB.

The wireless repeater may change the gain adjustment unit according to the external interference signal level. For example, when the external interference signal level is high enough to cause oscillation, the wireless repeater may decrease the repeater antenna output level more quickly by setting a large gain adjustment unit.

The wireless repeater according to another embodiment of the present invention may variably change the gain adjustment period according to the external interference signal level. Here, the gain adjustment period is information indicating how often the gain value can be changed. For example, the gain adjustment period may be 1 ms. That is, the smaller the gain adjustment period, the faster the repeater output level can be controlled.

According to another embodiment of the present invention, when the wireless repeater detects the opening and closing of the door 90 through the control signal received from the door opening / closing detection sensor 230, it is possible to set a gain adjustment unit and a gain adjustment period according to the interference signal strength. have.

In general, when opening and closing the door 90, the probability of an external interference signal is high. That is, since the wireless repeater performs an oscillation control function at the time when a specific event occurs, it is possible to minimize the repeater load.

The wireless repeater oscillation control apparatus according to another embodiment of the present invention may control the repeater oscillation in conjunction with a temperature sensor.

The temperature sensor 220 may measure the ambient temperature and transmit a predetermined control signal to the wireless repeater when the measured temperature is the upper or lower limit of the reference value. The wireless repeater may cut off the power of the repeater or control the operation of the cooling fan or the heating plate provided on one side of the wireless repeater according to the control signal received from the temperature sensor.

For example, the proper operating temperature of the wireless repeater may be 50 degrees or less of the image or 20 degrees or below zero. If the temperature measured by the temperature sensor 220 is minus 25 degrees, the wireless repeater may drive the heating plate to maintain the proper operating temperature.

If the temperature measured by the temperature sensor 220 is an image of 55 degrees, the wireless repeater may cut off the power for a predetermined time or increase the driving speed of the cooling fan.

Wireless repeaters can overheat for reasons such as excessive load, oscillations, and changes in ambient temperature. This overheating can cause fatal damage to the device. As described above, by mounting the temperature sensor 220 inside or outside the wireless repeater, it is possible to prevent equipment damage due to overheating.

3 is a structure of a wireless repeater oscillation control device according to an embodiment of the present invention.

As shown in FIG. 3, the wireless repeater oscillation control device includes a transmission module 310, an oscillation detection module 320, an output control module 330, a power control module 340, a display module 350, and a communication module ( 360), a message transmission module 370 and a control module 380.

The transmission module 310 converts and amplifies the signal transmitted between the donor antenna 10 and the service antenna 30.

More specifically, the transmission module 310 includes an amplifier for amplifying a signal received through an antenna, a frequency converter for performing frequency conversion on the received signal, a filter for removing signals in unnecessary bands, forward or reverse direction. And a duplex to select a path.

The oscillation detection module 320 is a module for determining whether a wireless repeater is oscillating, and measures an output level of a reverse or forward signal. When the measured output level is higher than a predefined reference value, it can be determined as oscillation.

The output control module 330 controls the repeater gain applied to the transmission module 310 according to the control signal of the control module 380. The output control module 330 according to an embodiment of the present invention may change the gain control unit and the gain control period using the detection information transmitted from the sensor according to the control signal of the control module 380.

The power control module 340 performs a function of turning on / off the power applied to the transmission module 310 according to the control signal of the control module 380.

For example, when the oscillation phenomenon is not solved by the repeater gain control, the power control module 340 may cut off the power of the transmission module 310 according to the control signal of the control module 380.

The display module 350 is a display device for displaying the current operating state and alarm status of the repeater. Here, the operating state means information such as forward and reverse output levels, repeater gain, repeater current temperature, interference signal level from outside, and whether the door is opened or closed. It should be noted that the alarm status can be displayed using a screen display or a colored LED lamp.

The communication module 360 may perform a function of receiving a control signal received from a sensor and transmitting it to the control module 380, or transmitting a control signal received from the control module 380 to a corresponding terminal through various communication means. have.

To this end, the communication module 380 according to the present invention includes RS-232, Wireless Local Area Network (WLAN), Bluetooth, Zigbee, Ultra-WideBand (UWB), Radio Frequency Identification (RFID), Wired A communication function of at least one of wireless communication methods such as LAN and Wideband Code Division Multiple Access (WCDMA) / LTE (Long Term Evolution) can be provided.

For example, when the sensor supports Bluetooth communication, the communication module 380 may receive a control signal from the sensor through the Bluetooth receiving terminal.

The message transmission module 370 generates a predetermined alarm message to be transmitted to the operator terminal according to the control signal of the control module 380. At this time, the alarm message is transmitted to the communication module 360 by the control module 380, and the communication module 360 may transmit the received alarm message using a communication means that the operator terminal can receive.

The control module 380 performs overall control of the repeater system in conjunction with the above-described module. In particular, the control module 380 performs various control procedures necessary for controlling relay output and preventing oscillation according to the sensed information received from the sensor.

The wireless repeater oscillation control apparatus according to another embodiment of the present invention may further include a timer for controlling the power off.

For example, when power applied to the transmission module is cut off by oscillation, the control module 380 drives the timer for a predetermined time.

If the timer expires, the power control module 340 re-applies the cut off power according to the control signal of the control module 380.

If the oscillation phenomenon is not removed for a certain period of time even after the power is applied again, the control module 380 transmits a control signal to the power control module 340 so that the power is cut off again.

If the oscillation phenomenon is not removed through the above-described power ON / OFF operation for a predetermined number of times, the control module 380 may cut off the power of the transmission module 310 and then transmit a predetermined alarm message to the operator terminal. have.

4 is a flow chart for explaining a method of controlling a wireless repeater oscillation according to an embodiment of the present invention.

Referring to FIG. 4, the wireless repeater receives a control signal including predetermined sensing information from the sensor (S402).

The wireless repeater extracts sensor identification information from the received control signal (S404). Here, the sensor identification information is information for identifying the type of sensor, and is preferably defined in advance for each sensor. For example, the sensor identification information may have a length of 2 bits, and the door opening / closing detection sensor is binary “01”, the interference signal detection sensor is binary “10”, and the temperature sensor is binary “11”. Can be defined.

The wireless repeater determines whether the sensor identification information is a door opening / closing detection sensor (S406). As a result of the determination, if it is a door open / close detection sensor, the wireless repeater extracts the door open / close indicator from the control signal (S408).

Here, the door opening and closing indicator is an identifier for identifying whether the door is open or closed. For example, the door opening / closing identifier has a length of 1 bit, and may be set to “1” if open, and “0” if closed.

Subsequently, the wireless repeater determines whether the door is open by referring to the extracted door opening and closing instruction (S410). As a result of the determination, if it is open, the wireless repeater changes the gain adjustment unit and the gain adjustment period according to the current antenna output level (S412).

At this time, the wireless repeater controls the repeater gain using the changed gain adjustment unit and gain adjustment period. Thereafter, the wireless repeater determines whether an oscillation has occurred (S414).

In step 414, if an oscillation is detected, the wireless repeater cuts off the repeater power and drives the timer. Subsequently, the wireless repeater increments a predetermined power-off counter (S416).

Here, the timer is used as a means for confirming whether or not the oscillation is removed after a certain period of time has passed, and can be driven for a predetermined time. When the timer expires, a predetermined timer interrupt occurs, and step 420 below is performed.

 If the timer expires (S418), the wireless repeater compares whether the power-off counter value is less than a preset threshold (S420). Here, the threshold value means the number of times of power ON / OFF that can be repeated at the maximum when an oscillation occurs.

In step 420, if the power cut-off counter is less than the threshold, the wireless repeater performs step 414 described above.

If the power cutoff counter reaches a threshold, the wireless repeater cuts off the power of the wireless repeater and generates a predetermined notification message and transmits it to the operator terminal (S422).

Here, the notification message may be transmitted to a phone number or an email address of a pre-designated operator terminal using a means such as a text message or email.

In step 410, if the door opening / closing indicator indicates that the door is closed, the wireless repeater changes the gain adjustment unit and the gain adjustment cycle to preset initial values (S424). Here, the initial value may be a predefined repeater gain adjustment parameter value applied in a normal environment.

Hereinafter, when the sensor identification information is not the door opening / closing detection sensor (drawing code “A”), a method of controlling oscillation in the wireless repeater will be described in detail with reference to FIG. 5 to be described later.

5 is a flowchart for explaining a method of controlling a wireless repeater oscillation according to an embodiment of the present invention.

Referring to FIG. 5, in step 406 of FIG. 4, if the sensor identification information does not indicate the door opening / closing detection sensor, the wireless repeater determines whether the sensor identification information is an interference signal detection sensor (S502).

As a result of the determination, when the sensor identification information indicates the interference signal detection sensor, the wireless repeater extracts the external interference signal level from the control signal (S504), and determines whether the extracted external interference signal level is greater than a predetermined reference value (S506).

As a result of the determination, if it is larger than the reference value, the wireless repeater changes the gain adjustment unit and the gain adjustment period according to the external interference signal level (S508).

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention.

Accordingly, the above detailed description should not be construed as limiting in all respects, but should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

210: interference signal detection sensor 230: door opening and closing detection sensor
220: temperature sensor 310: transmission module
320: oscillation detection module 330: output control module
340: power control module 370: message transmission module
360: communication module 360: communication module

Claims (16)

In the method of controlling the oscillation of the wireless repeater in conjunction with the sensor,
Receiving a control signal including detection information from the sensor; And
Controlling a repeater gain of the wireless repeater according to the control signal
Including,
The repeater gain is a parameter for controlling the output of the wireless repeater,
The sensor includes a door opening and closing detection sensor that detects the opening and closing of the door (Door)
How to control the wireless repeater oscillation. According to claim 1,
If the output of the wireless repeater is not maintained below the reference value, further comprising the step of cutting off the power of the wireless repeater for a predetermined time.
How to control the wireless repeater oscillation. delete According to claim 1,
The detection information includes a door opening / closing indicator, wherein when the door opening / closing indicator indicates to open the door, at least one of a gain adjustment unit and a gain adjustment cycle used for output control of the wireless repeater is changed.
How to control the wireless repeater oscillation. According to claim 4,
The gain adjustment unit and the gain adjustment period are dynamically adjusted based on the output level of the wireless repeater.
How to control the wireless repeater oscillation. According to claim 4,
When the door opening and closing indicator indicates that the door is closed, the gain adjustment unit and the gain adjustment cycle are changed to a predetermined initial value.
How to control the wireless repeater oscillation. According to claim 1,
The sensor further includes an interference signal detection sensor that measures the intensity of an interference signal flowing from the outside, and the detection information includes an external interference signal level measured by the interference signal detection sensor.
How to control the wireless repeater oscillation. The method of claim 7,
When the level of the external interference signal is greater than or equal to a reference value, the output gain of the wireless repeater is reduced until isolation is secured.
How to control the wireless repeater oscillation. In the device for controlling the oscillation of the wireless repeater in conjunction with the sensor,
A communication module that performs communication with the sensor;
A transmission module that converts, amplifies, and transmits wireless signals input to the antenna;
A switch module that controls power applied to the transmission module; And
It includes an output control module for controlling the repeater gain according to the control signal received from the sensor,
The sensor includes a door opening and closing detection sensor for detecting the opening and closing of the door
Wireless repeater oscillation control device. The method of claim 9,
Further comprising an oscillation detection unit for detecting whether or not the oscillation by measuring the output level of the wireless signal applied to the transmission module, if it is determined that the oscillation by the oscillation detection unit, the switch module cuts off the power for a predetermined time Characterized by
Wireless repeater oscillation control device. The method of claim 9,
The control signal
Sensor identification information for identifying the type of the sensor; And
Characterized in that it comprises at least one of the detection information collected by the sensor corresponding to the sensor identification information
Wireless repeater oscillation control device. The method of claim 11,
The sensor
An interference signal detection sensor detecting whether an external interference signal is introduced and measuring the intensity of the external interference signal; And
Characterized in that it further comprises at least one of a temperature sensor for measuring the temperature and detecting whether the measured temperature is fatal to the operation of the wireless repeater.
Wireless repeater oscillation control device. The method of claim 12,
When a door open is detected according to the control signal, a gain adjustment unit and a gain adjustment cycle are variably set according to the external interference signal strength.
Wireless repeater oscillation control device. In the system for controlling the oscillation of the wireless repeater,
sensor; And
A power switch and a communication module that performs communication with the sensor is provided, and includes a wireless repeater that controls repeater gain and power according to a control signal received from the sensor.
The sensor includes a door opening / closing detection sensor that detects opening / closing of a door according to whether or not current flows to the line.
Wireless repeater oscillation control system. The method of claim 14,
The communication module is RS-232, Wireless Local Area Network (WLAN), Bluetooth, Zigbee, Ultra-WideBand (UWB), Radio Frequency Identification (RFID), Long Term Evolution (LTE), Wideband Code Division Multiple Access) characterized in that the communication function is provided
Wireless repeater oscillation control system. The method of claim 14,
If the current flow of the line is not detected according to the opening of the door, it is characterized in that the output of the wireless repeater is cut off.
Wireless repeater oscillation control system.

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