KR20110070308A - Apparatus for monitoring relay and method thereof - Google Patents

Abstract

PURPOSE: A relay monitoring apparatus and a method thereof are provided to steadily secure wireless quality information in the operation region of a relay. CONSTITUTION: In order that a terminal modem(420) is connected to one of a link antenna(310) and a service antenna(320), a switch(430) performs switching. A controller(460) controls the signal transceiving path of the terminal modem through the switch. The controller transmits information collected as the monitoring result of a relay(330) through the terminal modem to a base station. The controller receives a control command through the base station from a network management server.

Description

Repeater monitoring device and its method {APPARATUS FOR MONITORING RELAY AND METHOD THEREOF}

The present invention relates to an apparatus for monitoring a repeater and a method thereof, and more particularly, to an apparatus and method for monitoring an RF repeater using a mobile communication terminal modem of the same transmission scheme as a radio frequency (RF) repeater. It is about.

An RF repeater (hereinafter referred to as an "relay" refers to an RF repeater) is a system that is installed to expand mobile radio coverage in a shaded area such as a basement of a building (office, shopping mall, department store) or a parking lot, which is a shade area of radio waves when constructing a mobile communication network. In order to detect the input / output level of the up / down signal between the base station and the user terminal and to maintain the received signal level equivalent to the radio quality of the base station, the power level is appropriate to the area and the internal structure of the building to be installed, and Automatic gain control, shutdown, and isolation checks are implemented to prevent internal failures in base stations and repeaters due to inputs and oscillations.

Functionally, the repeater does not restore and interpret the RF signal between the base station and the user terminal, but simply performs the function of amplifying and transmitting power after band filtering and noise suppression for the analog RF signal. (Internal antenna) and repeater body.

Here, the link antenna is mainly used Yagi antenna, and the antenna beam pattern as the input / output interface of the up / down signal with the base station or terrestrial optical repeater (reproducing and transmitting the base station signal) is installed so that the antenna beam pattern is located at the base station side and the LOS. The RF cable is extended from the repeater and installed outdoors with good radio wave sensitivity.

The service antenna mainly uses a patch antenna and is installed in the repeater service section as an up / down signal interface with the user terminal, and is installed in the service section by extending the RF cable from the repeater.

In this case, the service antenna installation interval is designed to suit the site conditions according to the building structure and materials. Accordingly, since the repeater is mainly installed in the underground space having a predetermined distance from the link antenna and the service antenna, the radio quality (CINR, RSSI, etc.) of the up / down signals transmitted and received by the link antenna and the service antenna are different.

These repeaters are installed in the shaded area of the radio wave and then configured, operated, monitored, and fault information on the repeater such as operation of the repeater, operation status such as up / down amplification gain setting and input / output signal level, and occurrence of failure such as oscillation and shutdown. It requires a separate operational management interface to communicate to the client.

In general, the optical repeater has a wired interface with the base station, so it is easy to manage and operate. However, the RF repeater used in the mobile communication network requires a separate monitoring device for this purpose, and the currently introduced 2G, 3G RF repeater is a CDMA or WCDMA modem. Operation management information of the corresponding RF repeater is transmitted to the NMS (Network Management System) server of the operator through a mobile communication modem. Apart from this, RF repeater operation management using a high speed internet modem rather than a mobile communication network may be an alternative.

Repeater operation management using a mobile communication modem as described above requires the premise that a propagation path with a mobile communication base station transmitting and receiving data with the mobile communication modem can be secured stably.

For example, in the case of a 3G RF repeater monitoring apparatus using a 2G CDMA modem, the operating state information of the 3G repeater is transmitted to the NMS server through the 2G mobile communication path. In the case of a 3G RF repeater monitoring apparatus using a 3G WCDMA modem, the operating state information of the 3G repeater is transmitted to the NMS server through the same 3G mobile communication path as the up / down signals processed by the repeater. In this case, when the 3G mobile communication path is not secured due to an abnormality of the 3G RF repeater or an intrusion of a malicious user, there is no way for the operator to check other than the VoC (Voice of Customer) or visit of the user in the shadow area.

Due to the characteristics of the device, oscillation may occur due to the separation between the link antenna and the service antenna and the difference between the input and output signal levels. In this case, the repeater may automatically shut down and fall into an unserviceable state. In addition, since it is installed in the user's immediate area, the VoC or the operator of the user in the RF repeater service area can determine whether any user is incapable of service by turning off the power of the repeater after installing the repeater of the operator, or the service is not available due to the aforementioned oscillation. There is a drawback that you cannot check the status of the RF repeater without visiting.

On the other hand, when implementing an operating monitoring device using a modem of the same transmission method as an RF repeater, such as a 3G RF repeater monitoring device using a 3G WCDMA modem, the service quality information of the user in the service area through the repeater can be checked. have.

The method of implementing the monitoring device for this purpose is implemented by first removing the antenna from the RF input terminal of the mobile communication modem in the monitoring device and connecting the coupled signal from the service antenna output of the RF repeater. However, in this case, the operation management information for the RF repeater through the monitoring device is also transmitted to the NMS server of the operator through the service antenna of the RF repeater. Therefore, as described above, when the RF repeater becomes inoperable due to an abnormality or malicious user intrusion, the monitoring device is connected to the service antenna port and thus cannot establish a propagation path for communication to the NMS server. You will not be able to provide the functionality.

In order to solve this problem, a signal coupled from the link antenna output of the RF repeater may be implemented by connecting the RF input terminal of the mobile communication modem in the monitoring apparatus. In this case, the transmission path of the operation management information for the RF repeater itself to the NMS server through the link antenna located in the base station side and the LOS has the advantage that the monitoring function is secured. However, service quality information in the RF repeater service area that can be additionally used when using an RF repeater and the same mobile communication modem as a monitoring device should be based on a signal input deteriorated through a link antenna, thus providing reliable quality information. There is a problem that can not be secured.

The technical problem to be achieved by the present invention, when monitoring a repeater using a mobile communication terminal modem of the same transmission method, a repeater that can stably secure the operation management for the repeater and service quality information in the repeater operating area It is to provide a monitoring device and a method thereof.

Monitoring device according to one feature of the present invention for achieving the above technical problem,

An apparatus for monitoring a repeater for relaying a mobile communication signal between a base station wirelessly connected through a link antenna and a mobile terminal of a user wirelessly connected through a service antenna, the apparatus being configured to move with the base station in the same transmission scheme as the mobile terminal of the user. A terminal modem capable of communication; A switch for switching the terminal modem to be connected to any one of the link antenna and the service antenna; Controls the signal transmission and reception path of the terminal modem through the switch, transmits information collected as a result of the monitoring of the repeater to the base station through the terminal modem, and receives a control command transmitted from the network management server through the base station It includes a control unit.

Monitoring method according to another aspect of the present invention,

A method for monitoring a repeater for relaying a mobile communication signal between a base station wirelessly connected through a link antenna and a mobile terminal of a user wirelessly connected through a service antenna, wherein the monitoring device connected to the link antenna and the service antenna is connected to the link antenna. Determining a state of a signal transmitted through the antenna and a state of a signal transmitted through the service antenna; Setting an antenna having a good signal state among the link antenna and the service antenna as a transmission path with the base station; Performing a monitoring operation on the repeater; And transmitting operation management information of the repeater or radio quality information in an operation area of the repeater collected as a result of the monitoring operation to the base station through the transmission path.

According to the present invention, it is possible to reliably secure the radio quality information in the operation management and repeater operation area for the RF repeater.

As a result, it is possible to stabilize network operation management and to improve service quality.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

In the present specification, a base station (BS) is an access point (AP), a radio access station (Radio Access Station, RAS), a Node B (Node B), a base transceiver station (Base Transceiver Station, BTS), MMR ( Mobile Multihop Relay) -BS and the like, and may include all or part of functions such as an access point, a radio access station, a Node B, a base transceiver station, and an MMR-BS.

Now, a repeater monitoring apparatus and method according to an embodiment of the present invention will be described in detail.

1 is a diagram illustrating a mobile communication system to which a repeater monitoring apparatus according to an exemplary embodiment of the present invention is applied.

As shown in FIG. 1, the mobile communication system is wirelessly connected to a base station 200 and a base station 200 for providing a mobile communication service for the mobile terminal 100, between the base station 200 and the mobile terminal 100. Repeater 300 performing the relay of the communication signal for the mobile communication service of the base station is connected to the repeater 300, the base station through the repeater 300 in the same transmission method as the transmission method between the repeater 300 and the base station 200 The monitoring device 400 and the monitoring device performing mobile communication with the 200, and transmitting the mobile communication quality information and / or the operation management information of the repeater 300 to the base station 200. And a network management server 600 for receiving the information transmitted from the mobile communication network 500.

The monitoring device 400 includes a mobile communication terminal modem for transmitting the repeater operation management information signal to the network management server 600 in the same transmission method as the relay signal of the repeater 300.

Since the repeater 300 should provide a mobile communication service between the base station 200 and the user's mobile terminal 100 and a relay service of the repeater operation management information in the monitoring apparatus 400, the base station 200 and the mobile terminal ( Relay path of up / down data signal between 100 (indicated by solid line in FIG. 1) and relay path of repeater operation management information signal between network management server 600 and monitoring device 400 (indicated by dotted line in FIG. 1) 2 Mobile communication paths.

The monitoring device 400 may be integrated into the repeater 300 when the repeater 300 is implemented, or may be implemented as a separate module and mounted in the repeater 300 enclosure or outside the enclosure.

2 is a detailed block diagram of the repeater 300 and the monitoring device 400 shown in FIG.

As shown in FIG. 2, the repeater 300 includes a link antenna 310, a service antenna 320, and a repeater body 330.

The link antenna 310 is an antenna for transmitting and receiving signals with the base station 200, and the service antenna 320 is an antenna for transmitting and receiving signals with the mobile terminal 100 in the service area of the repeater 300.

The relay body 330 relays up / down data signals between the base station 200 and the mobile terminal 100 using the link antenna 310 and the service antenna 320, and also operates the relay of the monitoring device 400. It performs a relay function for transmitting the management information to the network management server 600 through the base station 200.

The repeater body 330 may include filters 331 and 336, switches 332 and 335, and amplifiers 333 and 334 to relay up / down data signals between the base station 200 and the mobile terminal 100 in the service area. And a synchronization module 337, a data interface (I / F) 339 and a controller 338 for transmitting and receiving a data signal with the monitoring apparatus 400 for the case where the mobile communication method is a TDD method. The components constituting the repeater body 330, that is, the filters 331 and 336, the switches 332 and 335, the amplifiers 333 and 334, the synchronization module 337 and the controller 338 are already known to those skilled in the art. Since it corresponds to a well-known well-known technique, detailed description is abbreviate | omitted here.

The data interface 339 performs a function of transmitting and receiving a data signal with the monitoring apparatus 400, which is configured to correspond to the data interface 410 in the monitoring apparatus 400 so as to transmit and receive data signals.

In addition, the control unit 338 is well known for the configuration of controlling the data signal between the base station 200 and the mobile terminal 100, but receives the repeater operation management information signal transmitted by the monitoring device 400 The function of forwarding to the base station 200 is further configured.

The monitoring device 400 includes a data interface (I / F) 410, a mobile communication terminal modem 420, a switch 430, detectors 440 and 450, and a controller 460.

The data interface 410 transmits and receives a data signal with the repeater 400 and operates in a transmission method corresponding to the data interface 339 in the repeater main body 330. Examples of the data interface 410 include RS-232, USB, and the like.

The mobile communication terminal modem 420 is a modem that operates according to the same transmission method as the relay signal of the repeater 300, that is, the mobile communication method of the mobile communication network 500. However, the mobile communication terminal modem 420 does not perform wireless communication through the antenna, but removes the antenna and connects the coupling port 311 and the service antenna 320 connected to the link antenna 310 at the RF input terminal. The relay operation management information signal is transmitted to the network management server 600 through any one of the signals coupled through the coupling port 321, and the control signal transmitted from the network management server 600 is received. . Accordingly, the mobile communication terminal modem 420 performs mobile communication with the base station 200 through the repeater 300 in the same transmission method as the user terminal 100 in the operation management area of the repeater 300.

The switch 430 performs a switching function such that only one of the link antenna 310 and the service antenna 320 connected through the coupling ports 311 and 321 is connected to the mobile communication terminal modem 420.

Detectors 440 and 450 detect the signal levels of each of link antenna 310 and service antenna 320.

The control unit 460 controls the operation management information of the repeater 300, the radio quality information in the repeater 300 operating area, etc. under the control of the network management server 600, or the link antenna 310 or service of the repeater 300. The antenna 320 is transmitted to the network management server 600.

In addition, the control unit 460 controls the switch 430 according to the control of the network management server 600, a preset policy, or the signal level detected by the detectors 440 and 450 to control the mobile communication modem 420. The antennas 310 and 320 to be connected are selected.

In particular, the controller 460 controls the switch 430 so that the mobile communication modem 420 is connected to the service antenna 320 through the coupling port 321, through the detectors 440, 450 or data. When it is determined that the repeater 300 is inoperable due to a failure by detecting a signal from the repeater main body 330 through the interfaces 339 and 410, the mobile communication modem 420 controls the switch 430. The monitor device 400 is connected to the link antenna 310 through the coupling port 311 so that the monitoring device 400 continuously reports the failure state of the repeater 300 through the link antenna 310.

3 is a diagram illustrating an example of the controller 460 shown in FIG. 2.

The controller 460 illustrated in FIG. 3 includes a user interface 461, an information collector 462, a memory 463, a policy setter 464, a signal level determiner 465, a switch driver 466, and an operation. The control unit 467 is included.

The user interface 461 is a device for inputting a command from a manager who manages the operation of the monitoring apparatus 400 for monitoring the repeater 300 and displaying various information, and includes a keyboard, a mouse, a display, and the like.

The information collecting unit 462 is connected to the repeater 300 to collect operation management information of the repeater 300 and wireless quality information in the repeater 300 operating area.

The memory 463 stores various programs, data, and the like necessary for the monitoring operation of the monitoring apparatus 400, and also includes a memory for temporary storage.

The policy setting unit 464 stores various types of policy information preset by the monitoring apparatus 400 for the monitoring operation of the repeater 300. Among these policies, there is policy information that sets a transmission path of various types of information collected as a result of the monitoring of the repeater 300 performed by the monitoring apparatus 400. That is, it is information that has set a priority path with respect to which of the link antenna 310 and the service antenna 320 to transmit as the information transmission path.

The signal level determining unit 465 determines the state of the link antenna 310 and the state of the service antenna 320 by receiving the signal levels detected by the detectors 440 and 450.

The switch driver 466 controls the switching of the switch 430 according to the control of the operation controller 467. That is, the switch driver 466 drives the switch 430 such that the mobile communication terminal modem 420 is connected to either the link antenna 310 side or the service antenna 320 side.

The operation controller 467 controls the user interface 461, the information collection unit 462, the memory 463, the policy setting unit 464, the signal level determination unit 465, and the switch driver 466 to control the repeater ( While performing the monitoring operation of the 300, and transmits a variety of information collected as a result of the monitoring operation to the network management server 600, the transmission path for receiving a control command from the network management server 600 and the link antenna 310 A control operation for setting one of the service antennas 320 is performed.

Hereinafter, a repeater monitoring method according to an embodiment of the present invention.

First, the repeater monitoring method according to an embodiment of the present invention can be operated in three ways as follows.

First, when the repeater 300 is requested from the network management server 600 to transmit the radio quality information in the repeater 300 operating area in the normal operation state, the control unit 460 of the monitoring device 400 is Controlling the switch 430 to connect the mobile communication terminal modem 420 to the service antenna 320 coupling port 321 of the repeater 300, and establish a data channel with the base station 200 to obtain necessary information. After the service antenna 320 may be delivered to the network management server 600.

Secondly, when the repeater 300 is requested from the network management server 600 to report operation management information of the repeater 300 in a normal operation state, the control unit 460 of the monitoring apparatus 400 may perform the operation of the information. The delivery path may be designated by the network management server 600, or may be automatically determined by assigning a priority according to a policy. According to the transmission path determined as described above, the controller 460 controls the switch 430 to control the mobile communication terminal modem 420 of the antenna corresponding to the determined transmission path, that is, the coupling port 311 of the link antenna 310. And one of the coupling ports 321 of the service antenna 320, and forms a data channel with the base station 200 through the connected path to obtain the necessary information, and then through the corresponding transmission path network management server 600 Can be delivered to. Meanwhile, the controller 460 may preferentially set and provide the coupling port 311 of the link antenna 310 according to the policy, or may preferentially set the coupling port 321 of the service antenna 320. .

Third, the relay 300 prioritizes the coupling port 311 of the service antenna 310 in the normal operation state, the operation management information of the repeater 300 and the radio quality information in the repeater 300 operating area. When the repeater 300 that provides a data channel for delivery or provides only operation management information of the repeater 300 reaches an inoperable state due to an internal failure or an external factor, the controller 460 automatically switches the switch 430. After the mobile communication terminal modem 420 is connected to the coupling port 311 of the link antenna 310 through the switching function, the failure state of the repeater 300 may be reported.

A third monitoring operation among the three monitoring operations described above will be described with reference to FIGS. 4 to 6.

First, as shown in FIG. 5, the control unit 460 of the monitoring device 400 controls the switch 430 so that the mobile communication terminal modem 420 may use the service antenna 320 through the coupling port 321. Control to be connected to (S100).

In this state, the monitoring device 400 obtains the operation management information of the repeater 300 being monitored and the radio quality information in the operating area of the repeater 300 and the base station through the service antenna 320 and the repeater 300. The monitoring operation is transmitted to the network management server 600 via the step 200 (S110).

As such, since the mobile communication terminal modem 420 of the monitoring apparatus 400 receives the signal of the base station 200 through the service antenna 320 of the repeater 300, the same data channel as the real user is secured. Since the radio quality characteristic of the corresponding mobile communication method is used in the repeater 300 operating area, the radio quality information in the repeater 300 operating area may be obtained and provided to the network management server 600. That is, the mobile communication terminal modem 420 analyzes a signal received through the coupling port 321 of the service antenna 320 of the repeater 300, and receives a received signal sensitivity (RSSI) and a signal to noise ratio (CINR). ), The wireless quality data may be calculated and stored in the mobile communication terminal modem 420, and the stored information may be provided according to a request of the network management server 600 or a request from another external device. The radio quality information secured as described above is meaningful only when the antenna connected to the mobile communication terminal modem 420 is the service antenna 320. That is, the repeater 300 arranges the link antenna 310 and the service antenna 320 toward the base station 200 and the user mobile terminal 100 to accommodate the shadow area of the base station, thereby relaying noise suppression / signal amplification. Since the difference in the characteristics of the relay signal is large. Therefore, it is because it is appropriate to use the signal of the coupling port 321 of the service antenna 320 for the radio quality in the operation area of the repeater 300.

As such, while the monitoring device 400 monitors the operation of the repeater 300, the repeater 300 may be shut down due to oscillation or over-input due to its own function and performance characteristics, or an external installation area manager. It may be inoperable due to power on / off by. In this case, since the relay 300 cannot perform the relay function in a state in which only the signal of the link antenna 310 side, which is a passive element, can be normally received, the mobile communication signal cannot be transmitted to the service antenna 320.

Accordingly, the mobile communication terminal modem 420 of the monitoring device 400 connected to the coupling port 321 of the service antenna 320 is subjected to an important obstacle such as the inoperability of the repeater 300 with respect to the network management server 600. It is not possible to secure a data channel for delivering management management information about the system.

In order to prevent such a state, the controller 460 determines whether the repeater 300 is operating normally (S120). Whether the repeater 300 operates normally can be detected in various ways. For example, when connected to the link antenna 310 and the service antenna 320 through the coupling port (311, 321), the detector 440 is connected to these paths to detect the signal level transmitted and received through the path The control unit 460 may receive the signal level detected through the 450 to determine whether the repeater 300 operates normally. Alternatively, the control unit 460 may determine whether the repeater 300 normally operates through a control signal transmitted and received from the control unit 338 of the repeater 300.

If it is determined that the repeater 300 operates normally in step S120 using any one of various methods, the controller 460 continues to monitor the repeater 300 in the current state.

However, if the repeater 300 does not operate normally and is determined to be inoperable due to a failure, the controller 460 determines that the mobile communication terminal modem 420 is connected to the link antenna 310 through the coupling port 311. Automatic switching of the switch 430 is controlled to be connected (S130). This state is shown in FIG.

Thereafter, the controller 460 reports the failure state of the repeater 300 to the network management server 600 through the mobile communication terminal modem 420 connected to the link antenna 310 (S140).

In addition, when the failure of the repeater 300 is restored and the repeater 300 operates normally, the mobile communication terminal modem 420 needs to be connected to the service antenna 320 again, so that the control unit 460 repeats the normal operation. It is determined whether or not to operate (S150).

If the failure of the repeater 300 in the faulty state is restored and the repeater 300 is restored to its normal operating state, the controller 460 may control the coupling port 321 of the mobile communication terminal modem 420 as shown in FIG. 4. Automatic switching of the switch 430 is controlled to be connected to the service antenna 320 through (S160).

Accordingly, the monitoring device 400 continues to perform the monitoring operation for the relay 300 in normal operation, and the operation management information of the repeater 300 through the mobile communication terminal modem 420 connected to the service antenna 320. Repeating from the step (S110) of providing the radio quality information in the operating area of the repeater 300 to the network management server 600.

On the other hand, the operation of the monitoring device 400 is stopped when the power of the monitoring device 400 is turned off by the manager.

In addition, in the above, the control unit 460 is used to determine whether the repeater 300 is in normal operation based on the signal level detected by the detectors 440 and 450, but the control unit 460 may be used even when the repeater 300 is in the normal operation state. Connection with the mobile communication terminal modem 420 for transmitting operation management information of the repeater 300 through the signal level of the link antenna 210 and the signal level of the service antenna 320 detected through the detectors 440 and 450. It can also be used as data for configuration. For example, when the signal level of the link antenna 210 is higher than the signal level of the service antenna 320, the mobile terminal terminal 420 is connected to the link antenna 310 to perform the monitoring operation of the repeater 300. You can.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a diagram illustrating a mobile communication system to which a repeater monitoring apparatus according to an exemplary embodiment of the present invention is applied.

FIG. 2 is a detailed block diagram of the repeater and monitoring device shown in FIG. 1.

3 is a diagram illustrating an example of the controller illustrated in FIG. 2.

4 is a flowchart of a repeater monitoring method according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating a case in which a data path is set on a base station side of a mobile communication terminal modem of a monitoring apparatus through a service antenna of a repeater in a repeater monitoring method according to an exemplary embodiment of the present invention.

6 is a diagram illustrating a case in which a data path is set to a base station side of a mobile communication terminal modem of a monitoring apparatus through a link antenna of a repeater due to a failure of a repeater in a repeater monitoring method according to an exemplary embodiment of the present invention.

Claims (11)

An apparatus for monitoring a repeater for relaying a mobile communication signal between a base station wirelessly connected through a link antenna and a mobile terminal of a user wirelessly connected through a service antenna, A terminal modem capable of mobile communication with the base station in the same transmission method as the mobile terminal of the user; A switch for switching the terminal modem to be connected to any one of the link antenna and the service antenna; Controls the signal transmission and reception path of the terminal modem through the switch, transmits information collected as a result of the monitoring of the repeater to the base station through the terminal modem, and receives a control command transmitted from the network management server through the base station Control unit Surveillance device comprising a. The method of claim 1, According to the control of the controller, further comprising a detector for detecting the level of the signal transmitted between the link antenna and the terminal modem and the signal transmitted between the service antenna and the terminal modem, respectively, The control unit controls switching of the switch based on the signal level detected by the detector. Surveillance device, characterized in that. The method of claim 2, The control unit, An information collecting unit for collecting the operation management information of the repeater and the radio quality information in the operating area of the repeater; A signal level determination unit that determines a signal transmission state of the link antenna side and a signal transmission state of the service antenna side based on the signal level detected by the detector; A switch driver driving a switching operation of the switch connecting the terminal modem to either the link antenna or the service antenna; And An operation controller for controlling the information collecting unit, the signal level determining unit, and the switch driver to monitor the repeater; Surveillance device comprising a. The method of claim 3, wherein The control unit may further include a policy setting unit that sets preset policy information for the monitoring operation of the repeater. The operation controller controls the operation of the switch according to a result determined by the signal level determination unit or a policy set in the policy setting unit. Surveillance device, characterized in that. The method according to any one of claims 1 to 4, When the terminal modem is connected to the service antenna, the control unit collects and transmits the radio quality information in the operation management area of the repeater and the operation management information of the repeater to the base station, When the terminal modem is connected to the link antenna, the operation management information of the repeater is collected and transmitted to the base station Surveillance device, characterized in that. A method for monitoring a repeater for relaying a mobile communication signal between a base station wirelessly connected through a link antenna and a mobile terminal of a user wirelessly connected through a service antenna, Determining, by a monitoring device connected to the link antenna and the service antenna, a state of a signal transmitted through the link antenna and a state of a signal transmitted through the service antenna; Setting an antenna having a good signal state among the link antenna and the service antenna as a transmission path with the base station; Performing a monitoring operation on the repeater; And Transmitting operation management information of the repeater or wireless quality information in the operating area of the repeater collected as a result of the monitoring operation to the base station through the transmission path; Surveillance method comprising a. The method of claim 6, In the setting of the forwarding path, when a forwarding path to which a connection should be established first is set according to a preset policy, an antenna set by the policy among the link antenna and the service antenna is set as the forwarding path. Surveillance method characterized in that. 8. The method according to claim 6 or 7, When it is detected that the repeater does not operate normally in the step of performing the monitoring operation, Checking whether the transmission path is set to the service antenna; Switching the transmission path to the link antenna when the service antenna is set as the transmission path; And Transmitting a failure occurrence report of the repeater to the base station through the transmission path; Surveillance method comprising a. The method of claim 8, After transmitting the failure occurrence report of the repeater to the base station, Determining whether the repeater operates normally; If it is determined that the repeater is operating normally, switching the transmission path to the service antenna; And Continuously performing a monitoring operation on the repeater; Surveillance method comprising more. 10. The method of claim 9, When the transmission path is set to the service antenna, as a result of the monitoring operation for the repeater, operation management information of the repeater and radio quality information in the operating area of the repeater are collected and transmitted to the base station through the transmission path. Monitoring method. 10. The method of claim 9, And when the transmission path is set to the link antenna, collecting and managing operation management information of the repeater as a result of the monitoring operation for the repeater, and transmitting the information to the base station through the transmission path.

Images