KR20170076627A - Service frequency change device for repeater and repeater having service frequency change function - Google Patents

Abstract

The present invention relates to a repeater, and more particularly, to a repeater capable of changing a service frequency of a repeater and a repeater capable of changing a service frequency. A frequency changing apparatus according to the present invention includes: a receiving antenna section for outputting an input signal received from a base station; a signal processing control section for analyzing an input signal according to a predetermined method to generate and output input frequency information; The repeater can change the preset filter setting information so as to receive the input signal using the input frequency information. According to the present invention, since the service frequency of the repeater is automatically changed according to the change of the frequency served by the base station, there is no need to replace the repeater or reconfigure the repeater internal circuit.

Description

Technical Field [0001] The present invention relates to a service frequency change device for a repeater and a repeater capable of changing a service frequency,

The present invention relates to a repeater, and more particularly, to a repeater capable of changing a service frequency of a repeater and a repeater capable of changing a service frequency.

In a mobile communication system, a repeater plays a role of intermediate amplification between a base station and a mobile station (mobile communication terminal) when the propagation environment is poor and the distance from the base station is long, thereby extending the coverage of the corresponding base station. The repeater filters and amplifies signals according to frequency bands to provide mobile communication services to areas that are blocked or isolated from the outside. Accordingly, the repeater is pre-set so that the signal corresponding to the frequency band served by the base station is filtered and amplified.

However, if the frequency band served by the base station is changed or additionally allocated, the repeater may fail to perform the above functions properly. Korean Patent Laid-Open No. 10-2009-0110669 (entitled: Variable gain flatness compensation circuit for a repeater, variable gain flatness compensation device for a repeater and method thereof), the repeater is an analog type The flatness compensation circuit was constructed. When the flatness compensation circuit is used, a repeater having a predetermined frequency and bandwidth is manufactured. If the frequency band of the installation site or the installed area is changed or additionally allocated, there is a problem that the repeater is replaced or the repeater internal circuit is reconfigured .

Korean Patent Laid-Open No. 10-2009-0110669

In order to solve the above problems, the present invention provides a device capable of automatically changing a service frequency of a repeater when a frequency served by a base station is changed, and a repeater capable of changing a service frequency.

According to an aspect of the present invention, there is provided a mobile communication terminal comprising: a receiving antenna unit for outputting an input signal received from a base station; A signal processing controller for analyzing the input signal according to a preset method to generate and output input frequency information; And an interface for transmitting the input frequency information to a connected repeater, wherein the repeater changes filter setting information set in advance so as to receive the input signal using the input frequency information, The device is initiated.

According to another aspect of the present invention, there is provided an information processing apparatus including an interface unit for outputting input frequency information received from a frequency changing apparatus; A signal controller for changing preset filter setting information using the input frequency information; And a signal processing unit for processing a service signal corresponding to the filter setting information, wherein the frequency changing apparatus analyzes the input signal received from the base station according to a predetermined method to generate the input frequency information The repeater is started.

Here, the signal controller may change the filter setting information so that the input signal can be processed if it is determined that the input signal is not processed as a result of comparing the filter setting information and the input frequency information.

In addition, the signal controller may change at least one of the center frequency information and the bandwidth information included in the filter setting information so that the input signal can be processed.

According to another aspect of the present invention, there is provided a mobile communication system including: a receiving antenna unit for outputting an input signal received from a base station; A signal processing controller for analyzing the input signal according to a preset method to generate and output input frequency information; And a signal controller for changing preset filter setting information using the input frequency information.

Here, the signal controller may change the filter setting information so that the input signal can be processed if it is determined that the input signal is not processed as a result of comparing the filter setting information and the input frequency information.

In addition, the signal controller may change at least one of the center frequency information and the bandwidth information included in the filter setting information so that the input signal can be processed.

According to another aspect of the present invention, Generating input frequency information using the input signal; And transmitting the input frequency information to a connected repeater, wherein the repeater changes preset filter setting information to receive the input signal using the input frequency information, / RTI >

According to another aspect of the present invention, there is provided a method for controlling a frequency band, comprising: receiving input frequency information received from a frequency changing device; Changing preset filter setting information using the input frequency information; And processing the service signal corresponding to the filter setting information, wherein the frequency changing device analyzes the input signal received from the base station according to a predetermined method to generate the input frequency information A method of changing is disclosed.

here. Wherein the step of changing the filter setting information comprises: comparing the filter setting information with the input frequency information; And changing the filter setting information so that the input signal can be processed if it is determined that the input signal is not processed as a result of the comparison.

In addition, the step of changing the filter setting information may include changing at least one of the center frequency information and the bandwidth information included in the filter setting information so that the input signal can be processed.

According to another aspect of the present invention, Generating input frequency information using the input signal; Changing preset filter setting information using the input frequency information; And processing a service signal corresponding to the filter setting information.

Here, the step of changing the filter setting information may include: comparing the filter setting information and the input frequency information; And changing the filter setting information so that the input signal can be processed if it is determined that the input signal is not processed as a result of the comparison.

In addition, the step of changing the filter setting information may include changing at least one of the center frequency information and the bandwidth information included in the filter setting information so that the input signal can be processed.

According to still another aspect of the present invention, there is provided a computer-readable recording medium storing a program for causing a computer to execute the above-described frequency changing method.

According to the present invention, since the service frequency of the repeater is automatically changed according to the change of the frequency served by the base station, there is no need to replace the repeater or reconfigure the repeater internal circuit.

1 is a block diagram of a mobile communication system according to an embodiment of the present invention;
2 is a block diagram of a repeater and a frequency changing device according to an embodiment of the present invention;
FIG. 3 illustrates a case where a filter setting of a repeater is changed according to an embodiment of the present invention. FIG.
4 is a flowchart illustrating a service frequency changing method according to another embodiment of the present invention.
5 is a flowchart illustrating a service frequency changing method according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

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

Referring to FIG. 1, a mobile communication system 100 according to an embodiment of the present invention includes a base station 110, a relay 120, a frequency changing device 130, and a mobile communication terminal 140.

The base station 110 and the relay 120 connect the mobile communication network and the mobile communication terminal 140 for the mobile communication service. That is, the signal transmitted from the mobile communication terminal 140 is amplified by the repeater 120 and then transmitted to the receiver terminal (not shown) via the base station 110. In this case, if the distance between the base station 110 and the mobile communication terminal 140 is too long to smoothly transmit signals, the repeater 120 can perform a signal amplification function between the base station 110 and the mobile communication terminal 140.

However, when the frequency band served by the base station 110 is changed or additionally allocated, the repeater 120 can not perform the above-described signal amplification for the changed or added frequency band. This is because the relay 120 is provided with information on a frequency (hereinafter referred to as 'service frequency') to be served by the base station 110 in advance. Accordingly, the frequency changing device 130 may transmit information on a preset service frequency (hereinafter, referred to as 'filter') to the repeater 120 so that the repeater 120 can perform the signal amplification role even if the bandwidth of the service frequency is changed or further allocated. Quot; setting information "). Hereinafter, operations of the repeater 120 and the frequency changing device 130 according to the embodiment of the present invention will be described in detail with reference to FIG.

2 is a block diagram of a repeater and a frequency changing apparatus according to an embodiment of the present invention.

2, the frequency changing apparatus 130 includes a receiving antenna unit 210, a signal processing control unit 220, and a first interface unit 230. The repeater 120 includes a second interface 240, a signal controller 250, a signal processor 260, and a service antenna 270. Here, it is assumed that a signal received by the frequency changing apparatus 130 from the base station 110 (hereinafter referred to as an input signal) is an LTE (Long Term Evolution) signal. It is also assumed that the frequency changing device 130 is capable of receiving all of the frequencies corresponding to the elitist signal and that the repeater 120 is preset to receive only a part of the frequencies corresponding to the elitist signal.

For example, while the pre-set filter setting information for the LTI signal in the repeater 120 corresponds to the first center frequency information and the first bandwidth information, the LTI signal (i.e., the input signal) being served by the base station 110 The center frequency corresponds to the second center frequency information, and the bandwidth information corresponds to the second bandwidth information. At this time, the first center frequency information and the second center frequency information may be different from each other. Also, the first bandwidth information and the second bandwidth information may be different from each other. Therefore, it may be the case that all and / or part of the input signal can not be received depending on the filter setting information set in the repeater 120. [ On the other hand, depending on the filter setting information set in the frequency changing device 130, it may be possible to receive all of the input signals. That is, the third center frequency information and the third bandwidth information capable of receiving all the input signals may be set in the filter setting information of the frequency changing device 130 (in this case, the third center frequency information and the third bandwidth information May be different from the second center frequency information and the second bandwidth information)

First, the receiving antenna unit 210 can receive the input signal from the base station 110 and output the received input signal to the signal processing controller 220.

The signal processing controller 220 may analyze input signals to generate input frequency information. Here, the input signal may be a signal filtered by the filter setting information set in the frequency changing device 130. That is, the input signal may be an ELT signal corresponding to a frequency band preset in the frequency changing device 130. [ Also, the input frequency information may be information on the frequency of the input signal. For example, the signal processing controller 220 may analyze the input signal to obtain information about the center frequency (hereinafter referred to as first center frequency information) included in the input signal and / or information on the bandwidth included in the input signal (Hereinafter, referred to as " first bandwidth information ").

In addition, the signal processing controller 220 may output the generated input frequency information to the first interface unit 230.

The first interface unit 230 may transmit the input frequency information to the connected repeater 120. That is, the first interface unit 230 may transmit the input frequency information to the second interface unit 240. The second interface unit 240 may output the input frequency information to the signal controller 250.

When the input frequency information is input, the signal controller 250 may compare preset filter setting information with input frequency information. Herein, the filter setting information includes information on center frequency (hereinafter referred to as second center frequency information) and / or bandwidth information (hereinafter referred to as second bandwidth information) as information on a frequency band to be filtered by the repeater 120 Quot;).

If the comparison result indicates that the input signal is not processed because the filter setting information does not correspond to the input frequency information, the signal controller 250 may change the filter setting information to include the input frequency. That is, the signal control unit 250 can change the filter setting information so that the input signal can be processed because the input signal can not be processed if the filter setting information does not correspond to the input frequency information. If the second frequency band corresponding to the second center frequency information and the second bandwidth information does not include the first center frequency information and the first frequency band corresponding to the first bandwidth information, the repeater 120 transmits the current base station 110 It is impossible to process the input signal being serviced through. Therefore, the signal controller 250 can change the filter setting information to correspond to the input frequency information. For example, the signal controller 250 may change the filter setting information to correspond to the first center frequency information and / or the first bandwidth information.

The signal processing unit 260 may process a signal corresponding to the filter setting information. That is, the signal processing unit 260 can perform an operation such as filtering and amplifying the received signal using the filter setting information when a signal is received from the base station 110 or the like. Therefore, if the filter setting information is changed so that the input signal can be processed, the signal processing unit 260 can filter the input signal and amplify it according to preset gain information Gain.

Also, the service antenna unit 270 may transmit the amplified signal to the outside and be transmitted to the receiver terminal (not shown).

As described above, the repeater 120 can change the filter setting information so that the signal corresponding to the input frequency can be processed using the input frequency information transmitted from the frequency changing device 130, It is not necessary to replace the repeater 120 or reconfigure the internal circuit of the repeater 120. [

Although the repeater 120 and the frequency changer 130 are assumed to be separate devices, the frequency changer 130 may be formed as a component of the repeater 120. [ That is, the repeater 120 may include the signal processing controller 220 of the frequency changer 130. Accordingly, the signal processing controller 220 included in the repeater 120 generates frequency information (i.e., input frequency information) of an input signal received through a donor antenna of the repeater 120, 250 may change the filter setting information so that the input signal can be processed using the input frequency information. Accordingly, the repeater 120 can monitor whether the bandwidth of the signal served by the base station 110 is changed or not, through the signal processing controller 220, and if the bandwidth of the signal to be serviced is changed, It is possible to change the filter setting information set in advance in the controller 120 and to process the 'service signal corresponding to the changed bandwidth' in the repeater 120.

Although the signal controller 250 and the signal processor 260 included in the repeater 120 are physically separated from each other in the above description, they may be implemented in one physical device. For example, the signal controller 250 and the signal processor 260 may be implemented in a single field-programmable gate array (FPGA). Accordingly, the manager of the repeater 120 changes the filter setting information by comparing the input frequency information with the filter setting information, and the signal processing unit processes the input signal according to the changed filter setting information You will be able to program it.

3 is a diagram illustrating a case where a filter setting of a repeater is changed according to an embodiment of the present invention.

Referring to FIG. 3, it is exemplified that the center frequency information of the filter setting information preset in the repeater 120 corresponds to the third center frequency CF3, and the bandwidth information corresponds to the third bandwidth information BW3. At this time, the repeater 120 converts the center frequency information of the filter setting information into the fourth center frequency information CF4 and the bandwidth information to the fourth bandwidth information BW3 + BW3, so as to correspond to the input frequency information transmitted from the frequency- BW4).

That is, according to the pre-change filter setting information, the repeater 130 can not process the input signal. Since the center frequency (i.e., input center frequency, CF4) included in the input frequency information does not correspond to the filter setting information. Therefore, when it is determined that the signal corresponding to the input frequency information (i.e., the input signal) is not filtered according to the filter setting information, the repeater 130 changes the filter setting information so that the input signal can be processed in the signal processing unit 260 You can. 3, the repeater 130 changes the center frequency of the filter setting information to the input center frequency, expands the bandwidth to correspond to the bandwidth included in the input frequency information, and outputs the filter setting information Respectively.

4 is a flowchart illustrating a frequency changing method according to another embodiment of the present invention.

Hereinafter, a frequency changing method according to another embodiment of the present invention will be described in detail with reference to FIG. Each of the steps described below may be performed by the respective components of the repeater 120 and the frequency changer 130 described with reference to FIG. 2. However, for the convenience of understanding and explanation, Changing device 130 will be collectively described.

In step S410, the frequency changing device 130 receives an input signal from the base station 110. [

In step S420, the frequency changing device 130 analyzes the input signal to generate input frequency information. For example, the frequency changing device 130 may analyze the input signal to generate input frequency information including first center frequency information included in the input signal and / or first bandwidth information included in the input signal .

In step S430, the frequency changing device 130 transmits the generated input frequency information to the repeater 120. [

In step S440, the repeater 120 compares the received input frequency information with preset filter setting information. Here, the filter setting information may include the second center frequency information and / or the second bandwidth information as information on the frequency band that is filtered so as to be processed by the repeater 120, as described above.

In step S450, if it is determined that the input signal is not processed because the comparison result filter setting information does not correspond to the input frequency information, the repeater 120 may change the filter setting information to include the input frequency (step S460). That is, the repeater 120 can change the filter setting information so that the input signal can be processed because the input signal can not be processed unless the filter setting information corresponds to the input frequency information. For example, the repeater 120 may change the filter setting information to correspond to the first center frequency information and / or the first bandwidth information.

In step S470, the repeater 120 processes a signal (including an input signal) corresponding to the filter setting information. When the filter setting information is changed so that the input signal can be processed, the repeater 120 may filter the input signal and amplify it according to preset gain information Gain.

As described above, according to the frequency changing method of the present invention, the repeater 120 can use the input frequency information transmitted from the frequency changing device 130 to change the filter setting information It is not necessary to replace the repeater 120 or reconfigure the internal circuit of the repeater 120 even when the frequency served by the base station 110 is changed.

5 is a flowchart illustrating a frequency changing method according to another embodiment of the present invention.

Hereinafter, a frequency changing method according to another embodiment of the present invention will be described in detail with reference to FIG. Each of the steps described below may be performed by components included in the repeater 120, and the repeater 120 may be a concept including the frequency changing device 130 described with reference to FIG. 2 . 5 may be a repeater 120 including a signal processing control unit 220 of the frequency changing apparatus 130. The repeater 120 may be a repeater.

In step S510, the repeater 120 receives an input signal from the base station 110. [

In step S520, the repeater 120 analyzes the input signal to generate input frequency information. For example, assume that the input frequency corresponds to A [GHz]. At this time, the frequency changing device 130 may generate input frequency information corresponding to 'A'.

In step S530, the repeater 120 compares the received input frequency information with preset filter setting information. Here, the filter setting information may include the second center frequency information and / or the second bandwidth information as information on the frequency band that is filtered so as to be processed by the repeater 120, as described above.

In step S540, if it is determined that the input signal is not processed because the comparison result filter setting information does not correspond to the input frequency information, the repeater 120 may change the filter setting information to include the input frequency (step S550). That is, the repeater 120 can change the filter setting information so that the input signal can be processed because the input signal can not be processed unless the filter setting information corresponds to the input frequency information. For example, the repeater 120 may change the filter setting information to correspond to the first center frequency information and / or the first bandwidth information.

In step S560, the repeater 120 processes a signal (including an input signal) corresponding to the filter setting information. When the filter setting information is changed so that the input signal can be processed, the repeater 120 may filter the input signal and amplify it according to preset gain information Gain.

The above-described frequency changing method according to the present invention can be implemented as a computer-readable code on a computer-readable recording medium. The computer-readable recording medium includes all kinds of recording media storing data that can be decoded by a computer system. For example, it may be a ROM (Read Only Memory), a RAM (Random Access Memory), a magnetic tape, a magnetic disk, a flash memory, an optical data storage device, or the like. In addition, the computer-readable recording medium may be distributed and executed in a computer system connected to a computer network, and may be stored and executed as a code readable in a distributed manner.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that various modifications and changes may be made.

100: mobile communication system
110: base station
120: repeater
130: frequency changing device
210:
220: Signal processing control section
230: first interface unit
240:
250:
260: Signal processor
270:

Claims (15)

A receiving antenna unit for outputting an input signal received from the base station;
A signal processing controller for analyzing the input signal according to a preset method to generate and output input frequency information; And
An interface for transmitting the input frequency information to a connected repeater;
, ≪ / RTI &
Wherein the repeater changes preset filter setting information to receive the input signal using the input frequency information.
An interface for outputting input frequency information received from the frequency changing device;
A signal controller for changing preset filter setting information using the input frequency information; And
A signal processing unit for processing a signal corresponding to the filter setting information;
, ≪ / RTI &
Wherein the frequency changing device analyzes the input signal received from the base station according to a predetermined method to generate the input frequency information.
3. The method of claim 2,
Wherein the signal control unit changes the filter setting information so that the input signal can be processed if it is determined that the input signal is not processed as a result of comparing the filter setting information and the input frequency information.
The method of claim 3,
Wherein the signal controller changes at least one of center frequency information and bandwidth information included in the filter setting information so that the input signal can be processed.
A receiving antenna unit for outputting an input signal received from the base station;
A signal processing controller for analyzing the input signal according to a preset method to generate and output input frequency information; And
A signal controller for changing preset filter setting information using the input frequency information;
.
6. The method of claim 5,
Wherein the signal control unit changes the filter setting information so that the input signal can be processed if it is determined that the input signal is not processed as a result of comparing the filter setting information and the input frequency information.
The method according to claim 6,
Wherein the signal controller changes at least one of center frequency information and bandwidth information included in the filter setting information so that the input signal can be processed.
Receiving an input signal from a base station;
Generating input frequency information using the input signal; And
Transmitting the input frequency information to a connected repeater;
, ≪ / RTI &
Wherein the repeater changes preset filter setting information so that the repeater can receive the input signal using the input frequency information.
Receiving input frequency information received from the frequency changing device;
Changing preset filter setting information using the input frequency information; And
Processing a service signal corresponding to the filter setting information;
, ≪ / RTI &
Wherein the frequency changing device analyzes the input signal received from the base station according to a predetermined method to generate the input frequency information.
10. The method of claim 9,
Wherein the step of modifying the filter setting information comprises:
Comparing the filter setting information with the input frequency information; And
Modifying the filter setting information so that the input signal can be processed if it is determined that the input signal is not processed;
And changing the frequency of the received signal.
11. The method of claim 10,
Wherein the step of modifying the filter setting information comprises:
Modifying at least one of the center frequency information and the bandwidth information included in the filter setting information so that the input signal can be processed;
And changing the frequency of the received signal.
Receiving an input signal from a base station;
Generating input frequency information using the input signal;
Changing preset filter setting information using the input frequency information; And
Processing a service signal corresponding to the filter setting information;
/ RTI >
13. The method of claim 12,
Wherein the step of modifying the filter setting information comprises:
Comparing the filter setting information with the input frequency information; And
Modifying the filter setting information so that the input signal can be processed if it is determined that the input signal is not processed;
And changing the frequency of the received signal.
14. The method of claim 13,
Wherein the step of modifying the filter setting information comprises:
Modifying at least one of the center frequency information and the bandwidth information included in the filter setting information so that the input signal can be processed;
And changing the frequency of the received signal.
A computer-readable recording medium storing a program for causing a computer to execute the frequency changing method according to any one of claims 8 to 14.

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