KR101043169B1 - Apparatus and method for monitoring spurious - Google Patents

Abstract

The present invention relates to an apparatus and method for tracing a wave, and more particularly, to detect a tracing of a repeater, which can quickly track and remove an origin of the ripple causing a call quality degradation generated within the repeater coverage. An apparatus and method are provided.

An unnecessary wave tracking device according to an embodiment of the present invention, an output value collecting unit for collecting a reverse output value transmitted from a plurality of repeaters to the base station side, and to track the position where the unwanted wave is generated through the change of the collected reverse output value It includes a location tracking unit.

Clutter, repeater, reverse

Description

Apparatus and method for monitoring spurious}

The present invention relates to an apparatus and method for tracing a wave, and more particularly, to detect a tracing of a repeater, which can quickly track and remove an origin of the ripple causing a call quality degradation generated within the repeater coverage. An apparatus and method are provided.

Due to the rapid development of mobile communication services, high quality services are also desired in mountain wallpaper, remote islands, urban radio blind spots, subways, tunnels, and apartment complexes, where mobile communication services have not been fully provided to non-demand areas. In addition, as the mobile communication service becomes popular, the operator's mobile network environment has also been urgently required to expand the wider area and system capacity, and in designing the optimal mobile communication service due to the regional characteristics of Korea and the specificity of population density. Countermeasures have been needed for many shaded areas.

Here, the shaded area refers to an area where the propagation path between the base station and the mobile communication terminal is cut off. That is, it means an area where radio waves cannot reach by buildings or terrain. In order to solve the shadow area, an additional base station was previously installed, but since the operator is required to add a base station in the shadow area, it is possible to improve the communication quality and the service range at a low cost as a countermeasure. Repeater is being used.

A repeater service a shaded area by amplifying the signal so that the signal from the base station can be reached in a shaded area such as a tunnel, underground parking lot, or the sea where radio waves are blocked by mountains, buildings, or other features. It refers to a device that connects the signal from the shadow area terminal to the base station. In addition, the repeater may be fixedly installed in one place of the shaded area, or may be installed in a vehicle or a ship moving the shaded area. The basic concept of the repeater is a method of transmitting an RF signal of a base station to a desired remote area through a third transmission medium and reproducing the RF signal. Repeaters are classified into optical repeaters, frequency conversion repeaters, microwave repeaters, and the like according to the type of transmission medium.

An optical repeater converts an RF signal of a base station into an optical signal, transmits it to a desired remote area along an optical path, and then converts the RF signal into an RF signal and then transmits it to an antenna through an amplifier. The frequency conversion repeater converts the RF signal of the base station into an empty FA signal which is not used, transmits it to an antenna, receives it from a remote place, and converts it back to the original frequency signal. The microwave repeater converts the RF signal of the base station into microwave frequencies such as 8 GHz and 18 GHz and transmits the received RF signal to a remote place after the transmission.

The unwanted wave is a signal having a frequency that affects the frequency used by the mobile communication device. In the mobile communication system, the unnecessary wave not only interferes with the communication but also directly affects the profits of the carrier, so it must be quickly found and removed. In particular, the unwanted wave in a mobile communication system such as wideband code division multiple access (WCDMA) or code division multiple access (CDMA) scheme reduces the subscriber capacity of the system and, in severe cases, completely disrupts nearby communication. Recently, due to the rapid spread of repeaters, the occurrence of unnecessary waves due to repeater failure or oscillation and the occurrence of unnecessary waves due to malfunction or malfunction of external electronic devices (for example, CATV boosters) have increased.

In order to find and remove such unwanted waves, a technique using a mobile origination tracking device and a technique of finding an outgoing signal direction using a directional antenna have been used.

The technique using mobile transmitter is to find out the source of unwanted wave by using operator's intuition by using directional antenna, low noise amplifier (LNA), and spectrum analyzer, etc. It is a technique of detecting a direction by detecting a direction from an angle detector when a signal is received while the directional receiving antenna rotates.

Such techniques require antennas to be measured in tall buildings or high-rise buildings that are unobstructed by radio waves to find the correct direction of the unwanted waves. However, in order to move the device that finds the unwanted wave to a high-rise building or a high place, the weight of the devices used in the base station is too heavy, and the loss of the device is caused by the movement, and it is difficult to carry the call. There is a problem that it is difficult to quickly track the unnecessary wave when the disturbance occurs.

The present invention has been made in view of the above problems, and manages the average reverse output value for the reverse output values transmitted from the plurality of repeaters to the base axis, and the average reverse output value and the reverse direction sent by the operator's command when the unwanted wave occurs SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus and method for tracking a wave that can reduce a time for removing a wave by calculating a difference in an output value and tracking a generation position of the wave.

The object of the present invention is not limited to the above-mentioned object, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In accordance with an embodiment of the present invention for achieving the above object, an apparatus for tracking an unwanted wave includes an output value collecting unit configured to collect a reverse output value transmitted from a plurality of repeaters to a base station, and a change in the unwanted output through a change in the collected reverse output value. It includes a location tracking unit for tracking the generated location.

According to an embodiment of the present invention for achieving the above object, a wave generation method includes collecting a reverse output value transmitted from a plurality of repeaters to a base station, and generating a unwanted wave through a change in the collected reverse output value. Tracking the location of the device.

An apparatus and method for tracking a wave according to an embodiment of the present invention has the following effects.

Since the location of the unwanted wave can be tracked through the change of the reverse output value collected at each repeater, the time required for the trace tracking can be shortened.

In addition, the reduction in the time required for tracing the traces can reduce the customer complaints because it can quickly trace and eliminate the origin of the tumble, which causes call quality deterioration and makes the call impossible.

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

Specific details of other embodiments are included in the detailed description and the drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a mobile communication system according to an embodiment of the present invention.

As shown, the mobile communication system 100 according to the embodiment of the present invention includes a plurality of repeaters (111, 112, 113), the communication network 120 and the unwanted wave tracking device 130 is installed in the shaded area can do.

In the embodiment of the present invention, the shaded area in which the plurality of repeaters 111, 112, and 113 are installed is not only an area in which radio waves are blocked due to mountains, the sea, and other features, but also moving means for moving the shaded area. For example, it may include a vehicle moving in a shaded area of the ground, a ship moving at sea or the like. The plurality of repeaters 111, 112, and 113 may be classified into large, medium, and small by outputs, and a plurality of repeaters 111, 112, and 113 may exist within one base station coverage. Of course, the plurality of repeaters (111, 112, 113) is divided into large, medium, and small by output is just an example for the understanding of the present invention, the plurality of repeaters (111, 112, 113) the same output May have

In addition, the coverage by the plurality of repeaters (111, 112, 113), each coverage may be made independently, some areas may be overlapping, but is not limited thereto.

The communication network 120 may receive signals output from the plurality of repeaters 111, 112, and 113, and the unwanted wave tracking device 130 may operate in conjunction with the communication network 120. The position where the unwanted wave is generated may be tracked through a change in an output value of a signal received by the communication network 120.

In an exemplary embodiment of the present invention, when the mobile communication system 100 is a wideband code division multiple access (WCDMA) network, the communication network 120 connects to a UMTS Terrestrial RAN (UTRAN) 121 and a core connected to the wireless access network 121. It may include a network (Core Network) 122.

The radio access network 121 includes a base station 121a applying a radio access standard of a 3rd generation partnership project (3GPP) standard and a base station controller (RNC) 121b for controlling the base station 121a to support WCDMA. It may include.

The base station 121a supports various radio access technologies such as channel coding, interleaving, modulation, and demodulation for data transmission in a radio section. The base station 121a generally refers to a fixed station communicating with a plurality of repeaters 111, 112, and 113, and includes a node-B, a base transceiver system (BTS), and an access point. Point) and the like, but is not limited thereto. The base station controller 121b dynamically allocates radio resources of the wireless communication system and controls the base station 121a.

The core network 122 is a mobile switching center (MSC), a circuit switching gateway (Gateway MSC: GMSC), a packet switching support node (Serving GPRS Support Node: SGSN), a packet switching gateway (Gateway GPRS Support Node: GGSN). ), And may include a home location register (HLR), and can be understood as a network connected to an external network through GMSC or GGSN. The GMSC may be connected to a public switched telephone network (PSTN), an Integrated Services Digital Network (ISDN) or a public land mobile network (PLMN), which is involved in the transmission and reception of packets. The GGSN may be connected to an Internet Protocol (IP) network such as the Internet. At this time, since the functions of the respective components included in the core network 122 are described in the 3GPP standard, a detailed description thereof will be omitted.

The unwanted wave tracking device 130 may determine the repeater at the position where the unwanted wave is generated by changing the output value of the signal received from the plurality of repeaters 111, 112, and 113 to the communication network 120. That is, the unwanted wave tracking device 130 calculates and holds an average reverse output value for each repeater 111, 112, 113 based on the reverse output values of the signals received from the plurality of repeaters 111, 112, and 113 normally. If the unwanted wave is generated in any repeater coverage, the output value of the signal received from the repeater of the generated coverage is greater than the average reverse output value. By comparing the reverse output value of the received signal it is possible to determine the repeater of the position where the unwanted wave is generated.

In addition, in the exemplary embodiment of the present invention, the case in which the unwanted wave tracking device 130 is installed in the communication network 120 is described as an example. However, this is only an example to help understanding of the present invention. It is configured separately from the communication network 120 may be interlocked with each other. In addition, even when the unwanted wave tracking device 130 is installed in the communication network 120, it may be configured as a separate device, and devices (for example, a base station, a base station controller, and a core) constituting the communication network 120 are existing. Network, etc.) may be installed.

2 is a block diagram illustrating a wave tracking apparatus according to an embodiment of the present invention.

As shown, the unnecessary wave tracking device 130 according to an embodiment of the present invention, the output value collecting unit 131, the output value storage unit 132, the position tracking unit 133 and the notification unit 134 may include. Can be. In this case, the unnecessary wave tracking device 130 according to an embodiment of the present invention may be included in the mobile communication system because it collects output values transmitted from the plurality of repeaters (111, 112, 113) to the base station (121a), It may be added to an existing device, or may be configured separately, but is not limited thereto.

Hereinafter, in the embodiment of the present invention, an output value transmitted from the plurality of repeaters 111, 112, and 113 to the base station 121a will be referred to as a "reverse output value". In this regard, the output values sent from the base station 121a to the plurality of repeaters 111, 112, and 113 may be referred to as "forward output values".

The output value collector 131 may collect reverse output values transmitted from the plurality of repeaters 111, 112, and 113 to the base station 121 according to a predetermined period or an operator's command. Collecting the reverse output values of the plurality of repeaters (111, 112, 113) by the output value collector 131 at predetermined intervals to calculate the average reverse output value for each of the plurality of repeaters (111, 112, 113) or inflow of unwanted waves This is to monitor the case where the output value becomes abnormally large. In addition, the output value collecting unit 131 may collect the reverse output value at the command of the operator, which may be collected when the operator recognizes the occurrence of the unwanted wave and wants to determine the repeater of the position where the unwanted wave occurred.

In addition, since the output value collecting unit 131 has a list of all repeaters (for example, repeater identification information and location information, etc.), the reverse output values for all repeaters operating in a specific base station or a specific sector. Can be collected. In addition, the list held by the output value collecting unit 131 can also hold the position tracking unit 133 to be described later, it is possible to notify the operator of the information of the repeater corresponding to the position where the unwanted wave is generated when the unwanted wave is generated. .

The output value storage unit 132 may store reverse output values for the plurality of repeaters 111, 112, and 113 collected by the output value collection unit 131. In this case, the reverse output value stored in the output value storage unit 132 may include a reverse output value collected according to a predetermined cycle or an operator's command, and a plurality of repeaters 111, 112, and 113 calculated by the position tracking unit 133 to be described later. ) May include, but are not limited to, an average reverse output value for each, an abnormal reverse output value when an unwanted wave occurs, and the like.

The position tracking unit 133 is an average output value calculator 133a for calculating an average reverse output value of the reverse output values collected according to a predetermined period or an operator's command, and an abnormal reverse output value and an average reverse direction collected at the time when the unwanted wave is generated. It may include a determination unit 133b for determining the repeater of the position where the unwanted wave is generated through the difference value of the output value.

The average output value calculating unit 133a calculates an average reverse output value of the reverse output values collected according to a predetermined period or an operator's command, and averages each of the plurality of repeaters 111, 112, and 113 when no unwanted wave is generated. The reverse output value may be stored in the output value storing unit 132, and the stored average reverse output value may be updated each time the reverse output value is collected by the output value collecting unit 131.

The determination unit 133b may determine that the unwanted wave is generated when the reverse output value collected at the present time is different from the average reverse output value by more than a threshold value, and determine the repeater at the position where the unnecessary wave is generated. In this case, in the embodiment of the present invention, the threshold may be understood as a difference that can be recognized as an unnecessary wave in the network policy, and the threshold may be changed according to the network policy. Of course, the determination unit 133b may determine that the unwanted wave is generated and determine the position based on the difference between the reverse output value and the average reverse output value collected at this time, but the present invention is not limited thereto. It is also possible to recognize the occurrence of clutter and to command the relay to determine the clutter position.

For example, as shown in FIG. 3, a repeater 1 111 and a repeater 2 112 having coverages 111a and 112a are provided adjacent to each other, and an unwanted wave source is included in the coverage 111a of the repeater 1 111. If 111b is present, the generated unwanted wave may affect only repeater 1 111, but may also affect repeater 2 112 in some cases. In this case, since the unwanted wave is generated in the coverage 111 of the repeater 1 111, the repeater 1 111 is relatively affected more than the repeater 2 112. That is, the undesired wave is introduced into the repeater 1 (111) relatively more than the repeater 2 (112).

Accordingly, the determination unit 133b compares the average reverse output values of the plurality of repeaters 111, 112, and 113 stored in the output value storage unit 112 with the reverse output values into which the unwanted wave flows at this point in time, and calculates the difference. It is possible to arrange multiple repeaters in order of difference.

4 and 5 are schematic diagrams illustrating an average reverse output value and a reverse output value into which an unwanted wave flows, according to an exemplary embodiment of the present invention. 4 and 5 illustrate that the repeater 1 111 and the repeater 2 112 of FIG. 1 are affected by the unwanted wave generated in the coverage of the repeater 1 111, and the repeater 1 111 is the repeater 2 112. This is an example of a case where the influence is relatively large compared to).

4 illustrates the difference between the average reverse output value of repeater 1 (111) and the reverse output value into which unwanted waves are introduced, and FIG. 5 illustrates the difference between the average reverse output value of repeater 2 (112) and the reverse output value into which unwanted waves are introduced. It is shown.

In FIG. 4, it is assumed that a difference between the average reverse output value and the reverse output value into which the unwanted wave flows is “a”, and in FIG. 5, a difference between the average reverse output value and the reverse output value into which the unwanted wave flows is “b”. Since a has occurred at the coverage of (111), a has a value greater than b.

As such, when the unnecessary wave occurs, the determination unit 133b may arrange the plurality of repeaters 111, 112, and 113 in the order of the difference between the average reverse output value and the reverse output value into which the unwanted wave is introduced. In other words, it can be suspected and traced to an undesired wave within the coverage of the repeater with the largest difference.

The notification unit 134 operates a warning message indicating that information about the repeater corresponding to the coverage in which the unnecessary wave is generated as a result of the determination by the determination unit 133b (for example, repeater identification information and location information, etc.) and a warning message indicating that the unnecessary wave has been generated. Can be notified. In the exemplary embodiment of the present invention, the case in which the notification unit 134 notifies the operator through SMS is described as an example, but is not limited thereto.

Therefore, the operator can quickly grasp the repeater at the position where the unwanted wave occurred according to the notification of the notification unit 134, and can quickly take measures such as turning off the power of the corresponding repeater, blocking the inflow of the unnecessary wave, or removing the unwanted wave source. I can take it. In this way, the operator can quickly determine the location of the unnecessary wave and take action, thereby minimizing customer dissatisfaction due to the impossibility of the call.

6 is a flowchart illustrating a method for tracing a wave according to a first embodiment of the present invention. In this case, FIG. 6 collects output values transmitted from the plurality of repeaters 111, 112, and 113 to the base station 121a according to a predetermined cycle in the output value collecting unit 131, and for each repeater in the position tracking unit 133. The difference between the average reverse output value and the reverse output value collected at the present time is an example of determining that an unwanted wave has occurred and tracking it.

As shown, the unnecessary wave tracking method according to the first embodiment of the present invention collects the reverse output value from the plurality of repeaters (111, 112, 113) according to a predetermined period in the output value collection unit 131 (S110). The frequency at which the output value collector 131 collects the output value may vary according to a network policy. For example, the output value collecting unit 131 may collect the reverse output value at the same period for all the repeaters, or may collect the reverse output value at different periods for each repeater or location, but is not limited thereto.

The collected reverse output values may be stored in the output value storage unit 132, and the position tracking unit 133 calculates and updates an average reverse output value for each repeater through the collected reverse output values and stores the output value in the output value storage unit 132. It is made (S120).

At this time, when the unwanted wave is generated within the coverage of any repeater, since the output value collected differs from the previously stored average reverse output value, the position tracking unit 133 generates the average reverse output value and the unwanted wave for each repeater. At this point, the difference with the collected reverse output value is calculated, and the repeaters are arranged in order of the difference (S130).

The position tracking unit 133 determines that the unwanted wave is generated within the coverage of the repeater having the largest difference between the average reverse output value and the reverse output value collected at the time when the unwanted wave is generated (S140), and within the coverage of the repeater. In step S150, the operator is notified that the unnecessary wave has been generated, so that an action for removing the unnecessary wave may be performed.

On the other hand, Figure 6 can be understood as an example of the case in which the wave tracking device 130 according to an embodiment of the present invention determines and tracks the generation of the unnecessary wave without the operator's intervention, Figure 7 is the operator generates the wave This is an example of recognizing and then tracking the location where the unwanted wave is generated.

7 is a flowchart illustrating a method for tracing a wave according to a second embodiment of the present invention. In this case, FIG. 7 may be understood as a case in which the operator recognizes the occurrence of the unnecessary wave and collects the reverse output value through a customer complaint report or monitoring. In addition, FIG. 7 illustrates an example in which an operator outputs backward output values of respective repeaters according to a predetermined cycle and calculates and stores an average backward output value before the operator recognizes an unnecessary wave.

As shown, in the method for tracking the unwanted wave according to the second embodiment of the present invention, first, the operator recognizes the occurrence of the unwanted wave (S210), the plurality of repeaters (111, 112, 113) to the output value collection unit 131 Command to collect the reverse output value of (S220). Therefore, in FIG. 7, unlike the above-described FIG. 6, the reverse output value may be collected at a time different from a predetermined period. In addition, the operator's command is also applied to a plurality of repeaters (111, 112, 113) so that the reverse output value can be sent to the base station (121a) side.

The output value collector 131 collects the reverse output values of the plurality of repeaters 111, 112, and 113 according to the operator's command (S230), and the collected reverse output values are stored in the output value storage unit 132 (S240). .

The position tracking unit 133 compares the average reverse output value calculated before the output value is collected in step S230 and the reverse output value collected in step S230, and calculates the difference for each repeater (S250).

The position tracking unit 133 determines that the unwanted wave is generated within the coverage of the relay having the largest difference between the average reverse output value and the reverse output value collected in step S230 as a result of the calculation in step S250 (S260). In addition, the operator is notified that the unnecessary wave has been generated within the coverage of the repeater so that the action for removing the unnecessary wave can be performed (S270).

On the other hand, the components or '~' used in this embodiment is software such as tasks, classes, subroutines, processes, objects, execution threads, programs, or FPGAs (field-) that are performed in a predetermined area on the memory. It may be implemented in hardware such as a programmable gate array or an application-specific integrated circuit (ASIC), or may be a combination of the software and hardware. The component or 'unit' may be included in a computer readable storage medium, or a part of the components may be distributed and distributed to a plurality of computers.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains have various permutations, modifications, and modifications without departing from the spirit or essential features of the present invention. It is to be understood that modifications may be made and other embodiments may be embodied. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1 is a block diagram illustrating a mobile communication system according to an embodiment of the present invention.

Figure 2 is a block diagram showing a wave tracking device according to an embodiment of the present invention.

3 is a schematic diagram illustrating a source of unwanted waves according to an embodiment of the present invention.

Figure 4 is a graph showing the average calculation value of the repeater 1 and the output value in which the wave is introduced in accordance with an embodiment of the present invention.

5 is a graph showing the average calculation value of the repeater 2 according to an embodiment of the present invention and the output value in which the wave is introduced.

6 is a flowchart illustrating a method for tracing a wave according to a first embodiment of the present invention.

7 is a flowchart illustrating a method for tracing a wave according to a second embodiment of the present invention.

Description of the main parts of the drawing

131: output value collecting unit 132: output value storage unit

133: location tracking unit 134: notification unit

Claims (10)

An output value collector for collecting reverse output values transmitted from the plurality of repeaters to the base station; An average output value calculator configured to calculate an average reverse output value for each of the repeaters through the collected reverse output values; And Determining the repeater of the position where the unwanted wave is generated based on the difference value between the reverse output value collected by the output value collector and the average reverse output value, it is determined that the source of the unwanted wave is present in the coverage of the repeater having the largest difference value Determination unit; including the unnecessary wave tracking device. The method of claim 1, And the output value collecting unit collects reverse output values of the plurality of repeaters according to a predetermined period or a command of an operator. delete delete The method of claim 1, And a notification unit for notifying an operator of repeater information and a warning message corresponding to the location where the unwanted wave is generated. Calculating an average reverse output value for each repeater by collecting reverse output values transmitted from the plurality of repeaters to the base station; And Based on the difference between the reverse output value transmitted from the plurality of repeaters to the base station and the average reverse output value, the repeater of the position where the unwanted wave is generated is determined, but the source of the unwanted wave is present in the coverage of the repeater having the largest difference value. And determining the unnecessary wave tracking method. The method of claim 6, The calculating of the average reverse output value may include collecting reverse output values of the plurality of repeaters according to a predetermined period or a command of an operator. delete delete The method of claim 6, And notifying an operator of repeater information and a warning message corresponding to the location where the unwanted wave is generated.

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