KR20230094890A - Integrated Repeater that relays multiple base-stations and operation method thereof - Google Patents

Abstract

The present invention includes a receiving antenna for receiving communication signals transmitted by a plurality of base stations, a control device connected to the receiving antenna, and a transmitting antenna for transmitting communication signals output from the control device to a user terminal, the control device comprising the above Detecting the output level of the communication signals of each base station received through the receiving antenna, adjusting the gain so that the output level of the communication signals is the same, and transmitting each of the gain-adjusted communication signals to the transmitting antenna An integrated repeater for relaying a plurality of base stations and a method for operating the same are disclosed.

Description

Integrated repeater that relays multiple base stations and its operation method {Integrated Repeater that relays multiple base-stations and operation method thereof}

The present invention relates to a repeater, and more particularly, to an integrated repeater supporting signal relay of a plurality of base stations outputting signals of different frequency bands and a method for operating the same.

When a user device (UE, User Element) is located within an RF shadow area such as a large building such as a hospital or company, or is located at the boundary or periphery of a specific cell, the cellular method covers the user device and the corresponding cell. It has a disadvantage that smooth communication cannot be performed between base stations to cover. In particular, these disadvantages are getting worse in a 5G environment that uses a higher frequency than 4G.

In order to compensate for this disadvantage, the cellular method utilizes a repeater, which amplifies a weak signal received from a base station or extends an antenna to a user terminal located in a lower cell it covers. It is configured to transmit to

Meanwhile, even in the domestic cellular system, a repeater is used to relay Sub-6 5G signals of domestic mobile communication operators (SKT, KT, LG U+). At this time, although repeaters capable of all Sub-6 band services of mobile carriers can be used, each mobile carrier (SKT, KT, LG U+) still uses different RF repeaters for each carrier's Sub-6 band service. there is. Accordingly, there is a demand for cost reduction in CAPEX (Capital expenditures) through RF repeaters capable of providing all Sub-6 band services of telecommunication companies.

Accordingly, the present invention provides an integrated repeater for relaying a plurality of base stations capable of integrally relaying signals of base stations transmitting signals of different frequency bands to support communication services of a plurality of carriers and a method for operating the same. .

In addition, the present invention is an integrated repeater for relaying a plurality of base stations capable of operating a stable communication service by resolving synchronization mismatch in the process of integrally relaying signals of a plurality of base stations and evenly adjusting the output of each signal, and its It is to provide a method of operation.

However, the object of the present invention is not limited to the above object, and other objects not mentioned will be clearly understood from the description below.

In order to achieve the above object, the integrated repeater of the present invention transmits a receiving antenna for receiving communication signals transmitted by a plurality of base stations, a control device connected to the receiving antenna, and communication signals output by the control device to a user terminal. and a transmission antenna that detects output levels of communication signals of each base station received through the reception antenna, adjusts gains so that the output levels of the communication signals are the same, and It is characterized in that communication signals are transmitted to the transmission antenna.

Here, the control device includes a signal processing unit for receiving and processing a signal transmitted by the reception antenna and a control unit adjusting a gain of the signal processing unit, wherein the signal processing unit communicates with the first base station in the signal transmitted by the reception antenna. A first signal processing module that detects a signal, adjusts a gain corresponding to the gain control signal of the control unit, and outputs the signal; detects a communication signal related to a second base station from the signal transmitted by the receiving antenna; It is characterized in that it comprises a second signal processing module for adjusting and outputting the gain corresponding to.

In particular, the first signal processing module includes a first attenuator for attenuating the signal transmitted by the reception antenna, a first filter for filtering a frequency band related to the first base station for the attenuated signal, and an output level of the filtered signal. A first detector for detecting, a first amplifier for amplifying a signal of a frequency band related to the first base station, adjusting a gain in response to the first gain control signal transmitted by the control unit, and outputting the second signal processing signal. The module includes a second attenuator for attenuating the signal transmitted by the reception antenna, a second filter for filtering a frequency band associated with the second base station for the attenuated signal, a second detector for detecting an output level of the filtered signal, and a second amplifier for amplifying a signal of a frequency band related to the second base station, adjusting a gain in response to the second gain control signal transmitted by the control unit, and outputting the signal.

In addition, the control unit compares the output level of the communication signal related to the first base station and the output level of the communication signal related to the second base station with a specified rated output level, and controls the first gain control signal and the second gain according to the difference value. After generating the signal, it is characterized in that the control is performed so that the signal of the same output level is output by passing it to the first signal processing module and the second signal processing module, respectively.

In addition, the control unit compares the synchronization timing of the communication signal related to the first base station and the synchronization timing of the communication signal related to the second base station, and delays the synchronization timing of the communication signal related to the other base station based on the relatively slow synchronization timing. A synchronization control signal is generated and transmitted to either the first signal processing module or the second signal processing module to control signals having the same synchronization timing to be output.

According to an embodiment of the present invention, a method for operating an integrated repeater including a control device for receiving and processing communication signals transmitted from a plurality of base stations using a reception antenna and transmitting the communication signals to a user terminal through a transmission antenna includes the reception antenna. Detecting the output level of communication signals of each base station received through, adjusting the gain so that the output level of the communication signal is the same, and transmitting each of the gain-adjusted communication signals to the transmission antenna. In the step of adjusting the gain, the first signal processing module detects a communication signal related to the first base station from the signal transmitted by the reception antenna, and adjusts the gain in response to the first gain control signal provided by the control unit. and detecting a communication signal related to a second base station from a signal transmitted by the receiving antenna using a second signal processing module, and adjusting a gain in response to a second gain control signal provided by the control unit. characterized by

Here, the method comprises comparing the synchronization timing of the first base station-related communication signal and the synchronization timing of the second base station-related communication signal, and delaying the synchronization timing of other base station-related communication signals based on the relatively slow synchronization timing. It is characterized in that it further comprises.

According to the present invention, the present invention can simultaneously relay the Sub-6 5G service of three mobile communication companies through an integrated repeater for signals transmitted by base stations of a plurality of communication service providers, thereby reducing redundant installation of repeaters and providing a stable communication service. support can be provided.

In addition, various effects other than the above effects may be disclosed directly or implicitly in detailed descriptions according to embodiments of the present invention to be described later.

1 is a diagram showing an example of a communication service environment using an integrated repeater according to an embodiment of the present invention.
2 is a diagram showing an example of a detailed configuration of a control device of an integrated repeater according to an embodiment of the present invention.
3 is a diagram showing an example of a configuration of a signal processing unit according to an embodiment of the present invention.
4 is a diagram showing an example of a configuration of a control unit according to an embodiment of the present invention.
5 is a diagram illustrating an example of gain adjustment of a control device according to an embodiment of the present invention.
6 is a diagram illustrating an example of synchronization adjustment of a control device according to an embodiment of the present invention.
7 is a diagram illustrating an example of a method of operating an integrated repeater according to an embodiment of the present invention.

This patent is a study conducted in 2021 with the support of the National Institute of Information and Communication Planning and Evaluation with financial resources from the government (Ministry of Science and ICT) (No. 1711134262, 5G+ MO (Multi Operator) RAN Sharing In-Building Solution (MO DAS & MO RF Repeater )).

In order to clarify the characteristics and advantages of the problem solving means of the present invention, the present invention will be described in more detail with reference to specific embodiments of the present invention shown in the accompanying drawings.

However, detailed descriptions of well-known functions or configurations that may obscure the gist of the present invention will be omitted in the following description and accompanying drawings. In addition, it should be noted that the same components are indicated by the same reference numerals throughout the drawings as much as possible.

The terms or words used in the following description and drawings should not be construed as being limited to a common or dictionary meaning, and the inventor may appropriately define the concept of terms for explaining his/her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all of the technical ideas of the present invention. It should be understood that there may be equivalents and variations.

In addition, terms including ordinal numbers, such as first and second, are used to describe various components, and are used only for the purpose of distinguishing one component from other components, and to limit the components. Not used. For example, a second element may be termed a first element, and similarly, a first element may be termed a second element, without departing from the scope of the present invention.

In addition, terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In addition, terms such as "include" or "having" described in this specification are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or the other It should be understood that the above does not preclude the possibility of the presence or addition of other features, numbers, steps, operations, components, parts, or combinations thereof.

In addition, terms such as “unit”, “unit”, and “module” described in the specification refer to a unit that processes at least one function or operation, and may be implemented as hardware or software or a combination of hardware and software. Also, "a or an", "one", "the" and similar related words in the context of describing the invention (particularly in the context of the claims below) Unless indicated or otherwise clearly contradicted by context, both the singular and the plural can be used.

In addition to the above-mentioned terms, specific terms used in the following description are provided to aid understanding of the present invention, and the use of these specific terms may be changed in other forms without departing from the technical spirit of the present invention.

In addition, embodiments within the scope of the present invention include computer-readable media having or conveying computer-executable instructions or data structures stored thereon. Such computer readable media can be any available media that can be accessed by a general purpose or special purpose computer system. By way of example, such computer readable media may be in the form of RAM, ROM, EPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage, or computer executable instructions, computer readable instructions or data structures. physical storage media such as, but not limited to, any other medium that can be used to store or convey any program code means in a computer system and which can be accessed by a general purpose or special purpose computer system. .

1 is a diagram showing an example of a communication service environment using an integrated repeater according to an embodiment of the present invention.

Referring to FIG. 1, the communication service environment 10 of the present invention includes a plurality of base stations 11, 12, and 13 operated by a plurality of communication service providers, an integrated repeater 100, and a user terminal 200. can include The communication service environment 10 including this configuration matches time division duplexing (TDD) synchronization signals using one integrated repeater 100 in the process of relaying the Sub-6 5G service of a plurality of communication service provider base stations, and each Stable communication service can be supported by providing 5G communication service in the same coverage by radiating signals of carriers at the same output level.

The plurality of base stations 11, 12, and 13 may include, for example, a first base station 11 transmitting a first communication signal through a first frequency band in the Sub-6 5G communication range, and a first base station 11 in the Sub-6 5G communication range. It may include a second base station 12 transmitting a second communication signal through two frequency bands and a third base station 13 transmitting a third communication signal through a third frequency band in the Sub-6 5G communication range. . The base stations 11, 12, and 13 may transmit respective communication signals in the direction of at least the integrated repeater 100.

The user terminal 200 performs Sub-6 5G communication based on at least one communication signal among the first to third communication signals transmitted by the integrated repeater 100 in a state located within the communication coverage of the integrated repeater 100. It may be a terminal configured to use the service. The user terminal 200 may use a communication service through one communication operator base station (eg, the second base station 12) among the first to third base stations 11, 12, and 13. It may be a terminal that has completed a subscription application to . The user terminal 200 includes at least one antenna capable of using a Sub-6 5G communication service, a communication chip (or circuit) connected to the antenna, a processor for controlling the communication chip, a memory for storing data necessary for using the communication service, It may include a display for outputting a screen necessary for a process of using a communication service. In the illustrated drawings, a user terminal (UE) is connected to a separate electronic device (eg, DM PC) through a USB cable, and is illustrated in a form of supporting a communication function of the separate electronic device, but the present invention is not limited thereto. no. For example, the user terminal 200 may be configured to independently use the Sub-6 5G communication service without connecting to a separate electronic device.

The integrated repeater 100 includes at least one receiving antenna 110 capable of receiving first to third communication signals from the base stations 11, 12, and 13, connected to the at least one receiving antenna 110. It may include a control device 150 and at least one transmit antenna 120 connected to the control device 150 . Additionally, the integrated repeater 100 may further include an RF coaxial cable 101 for connecting the at least one transmit antenna 120 and the control device 150. Alternatively, the integrated repeater 100 may include a transmit antenna 120 formed in a pattern on one side of the case of the control device 150 without the configuration of the cable 101 . However, the cable 101 may be further included to ensure signal interference between the receiving antenna 110 and the transmitting antenna 120 and various directional characteristics of the transmitting antenna 120 .

2 is a diagram showing an example of a detailed configuration of a control device of an integrated repeater according to an embodiment of the present invention.

Referring to FIG. 2 , the control device 150 of the integrated repeater 100 according to an embodiment of the present invention may include a reception interface 151, a signal processing unit 155, a transmission interface 152, and a control unit 153. can

The receiving interface 151 may be connected to the at least one receiving antenna 110 . The at least one receiving antenna 110 may include, for example, at least one antenna pattern capable of receiving signals in a Sub-6 5G frequency band. The reception interface 151 may transfer the signal received by the reception antenna 110 to the signal processing unit 155 . During this process, the reception interface 151 may perform noise processing and signal amplification on the signal received by the reception antenna 110. In addition, the reception interface 151 controls the direction (or beamforming direction control) of at least one reception antenna 110 so that signals transmitted from the plurality of base stations 11, 12, and 13 can be uniformly received. can also be done

The signal processing unit 155 digitally converts the received signal transmitted through the reception interface 151, distributes the digitally converted signal, controls synchronization timing and gain of each distributed signal according to the control of the control unit 153, It can handle integration of controlled signals and analog conversion of integrated signals. Each component of the above-described signal processing unit 155 and the role of each component will be described later in detail with reference to FIG. 3 .

The transmission interface 152 may transmit the analog signal transmitted by the signal processing unit 155 to at least one transmission antenna 120 . In this process, the transmission interface 152 may perform impedance matching for transmission of an analog signal. Additionally, the transmit interface 152 may perform beam steering of the at least one transmit antenna 120 .

The control unit 153 may check the synchronization timing of the signals detected by the signal processing unit 155, adjust the synchronization timing if the synchronization timing does not match, check the output of the detected signals, and control the gain according to the output size. Each component of the controller 153 described above and the role of each component will be described later in detail with reference to FIG. 4 .

3 is a diagram showing an example of a configuration of a signal processing unit according to an embodiment of the present invention.

Referring to FIG. 3, the signal processing unit 155 of the present invention includes an analog digital converter (ADC) 51A, a divider 52a, a first signal processing module 53a, and a second signal processing module 53b. , a third signal processing module 53c, a combiner 52b (Combiner), and a DAC (51B) (digital analog converter).

The ADC 51A may convert an analog signal transmitted from the reception interface 151 into a digital signal and transmit the converted digital signal to the divider 52a. For example, the ADC 51A may perform digital conversion on a frequency signal of a 300 MHz band. In this regard, the reception interface 151 performs frequency band conversion (eg, IF-intermediate frequency) conversion on the signal received by the at least one reception antenna 110 (eg, conversion into a signal of a 300Hz band), and then the ADC. (51A). The ADC 51A may convert an analog signal converted into an intermediate frequency band into a digital signal.

The divider 52a may transfer the digital signal received from the ADC 51A to three signal processing modules 53a, 53b, and 53c, respectively. In this case, the digital signal transmitted to the three signal processing modules 53a, 53b, and 53c may include the same signal. In this regard, the divider 52a may perform copying and distribution of digital signals.

The first signal processing module 53a may perform signal processing, timing and output detection, amplification, and the like on the digital signal transferred from the divider 52a. In this regard, the first signal processing module 53a may include an attenuator (ATT), a band pass-filter (BPF), a detector (DET), and an amplifier (AMP). . The first signal processing module 53a may reduce the size of a digital signal using an attenuation processor, filter a signal of a designated frequency band using a filter, and then detect characteristics of the signal through a detector. For example, the filter included in the first signal processing module 53a converts the signal corresponding to the frequency band of the communication signal transmitted by the first base station 11 (or the communication signal of the first base station 11 into an intermediate frequency). signal corresponding to the frequency band of the time) can be designed to filter. The first signal processing module 53a may provide the control unit 153 with information about synchronization timing and output size of the communication signal of the first base station 11 . The first signal processing module 53a may receive a control signal for timing adjustment and a control signal for adjusting the output gain transmitted from the control unit 153, and process the gain and time delay of the amplifier based on the received control signal. there is. Accordingly, the signal transmitted to the combiner 52b through the first signal processing module 53a is a signal in which at least one of the synchronization timing and gain of the signal (digital signal) input to the first signal processing module 53a is adjusted. can include Alternatively, according to the control of the controller 153, a separate synchronization timing and gain may include the same signal as the input signal.

The second signal processing module 53b may have substantially the same configuration as the first signal processing module 53a. For example, the second signal processing module 53b may include an attenuator (ATT), a filter (BPF), a detector (DET), and an amplifier (AMP). Unlike the filter of the first signal processing module 53a, the filter of the second signal processing module 53b is a communication signal transmitted from the second base station 12 (or an intermediate converted communication signal of the second base station 12). It can be designed to filter a signal of a frequency band). The detector detects the synchronization timing and the output size of the communication signal related to the second base station 12 and transmits it to the control unit 153, and the amplifier responds to the control signal transmitted by the control unit 153 to communicate with the second base station 12. At least one of the synchronization timing of the signal and the gain of the output may be adjusted. Alternatively, when the communication signal of the second base station 12 is equal to the reference value, it may be transmitted to the combiner 52b without additional adjustment.

The third signal processing module 53c may have substantially the same configuration as the first signal processing module 53a or the second signal processing module 53b. For example, the third signal processing module 53c may include an attenuator (ATT), a filter (BPF), a detector (DET), and an amplifier (AMP). Unlike the filter of the first signal processing module 53a and the filter of the second signal processing module 53b, the filter of the third signal processing module 53c transmits the communication signal transmitted from the third base station 13 (or the filter of the third signal processing module 53b). It may be designed to filter an intermediate frequency band signal converted from a communication signal of the base station 13). The detector detects the synchronization timing and output size of the communication signal related to the third base station 13 and transmits the result to the control unit 153, and the amplifier responds to the control signal transmitted by the control unit 153 to communicate with the third base station 13. At least one of the synchronization timing of the signal and the gain of the output may be adjusted. Alternatively, when the communication signal of the third base station 13 is equal to the reference value, it may be transmitted to the combiner 52b without additional adjustment.

The combiner 52b may combine the digital signals received from the first to third signal processing modules 53a, 53b, and 53c. The combiner 52b may deliver the combined signal to the DAC 51B.

The DAC 51B may convert the signal transmitted by the combiner 52b into an analog signal and transmit the converted analog signal to the transmission interface 152 . At this time, the signal output by the DAC 51B may be, for example, a signal of a 300 MHz band, and the transmission interface 152 may convert the signal into a Sub-6 5G communication signal by performing up-conversion on the signal of the 300 MHz band. there is.

4 is a diagram showing an example of a configuration of a control unit according to an embodiment of the present invention.

Referring to FIG. 4 , the control unit 153 of the present invention may include a signal collection unit 153a, a signal comparison unit 153b, a gain adjustment unit 153c, and a synchronization adjustment unit 153d.

The signal collecting unit 153a receives a communication signal (digital signal) related to the first base station 11 and a communication signal related to the second base station 12 from the first to third signal processing modules 53a, 53b, and 53c, respectively. digital signal), and a communication signal (digital signal) related to the third base station 13 may be collected. In this regard, the signal collection unit 153a is configured to receive signals from detectors of the first to third signal processing modules 53a, 53b, and 53c. The signal collection unit 153a may transmit the collected signal to the signal comparison unit 153b.

The signal comparator 153b may compare signals transmitted by the signal collector 153a. In this process, the signal comparator 153b may compare the output magnitudes of the signals transmitted by the signal collector 153a. The signal comparator 153b may determine how much difference there is between each output and the magnitude of a predefined output, and transmit the corresponding difference value to the gain adjuster 153c. Alternatively, the signal comparator 153b may calculate an output difference from the other signals based on the signal having the largest output among the three signals, and transmit the calculated value to the gain adjuster 153c. Meanwhile, the signal comparator 153b may compare synchronization timings of signals transmitted by the signal collector 153a. The signal comparison unit 153b may calculate delay values of the remaining signals based on the signal having the slowest synchronization timing, and transfer the calculated delay values to the synchronization adjusting unit 153d.

The gain adjuster 153c may generate a gain control signal capable of adjusting the gain of the amplifier in each of the signal processing modules 53a, 53b, and 53c based on the difference value transmitted from the signal comparator 153b. there is. At this time, the gain adjuster 153c generates gain control signals corresponding to gain values required to adjust the output of each signal to a designated reference value, and sends the generated gain control signals to the signal processing modules 53a, 53b, and 53c. can be conveyed Meanwhile, while the gain control unit 153c generates gain control signals to adjust the outputs of the remaining signals based on the signal with the highest output among the three signals, the signal processing module that detects the signal with the highest output outputs an amplifier value. A gain control signal may be transmitted so that is 1.

The synchronization adjustment unit 153d may generate synchronization control signals for synchronization timing adjustment based on the delay values transferred from the signal comparison unit 153b. The synchronization controller 153d may transfer the synchronization control signals to the signal processing modules 53a, 53b, and 53c, and control signals to have the same synchronization timing. At this time, the synchronization controller 153d may transmit a synchronization control signal only to the remaining signal processing modules without transmitting a separate synchronization control signal to the signal processing module having the slowest synchronization timing.

5 is a diagram illustrating an example of gain adjustment of a control device according to an embodiment of the present invention.

Referring to FIG. 5 , for example, the input power level of the signal received by at least one receiving antenna 110 is, as shown, transmitted by the first base station 11 (eg, Operator A). The output value of the first communication signal 111a is the middle order as shown, and the output value of the second communication signal 111b transmitted by the second base station 12 (eg Operator B) is the highest as shown. rank, and the output value of the third communication signal 111c transmitted by the third base station 13 (eg, Operator C) may be the lowest rank as shown.

When the control device 150 receives the integrated signal having the above-described output characteristics, as described above with reference to FIGS. 3 and 4, the control device 150 compares output values by performing filtering and detection on the signal, and compares the output values with a predefined criterion. The remaining signals (eg, the first communication signal 111a and the third communication signal 111c) based on the difference from the value or the relatively largest signal (eg, the second communication signal 111b). The difference value can be calculated. The control device 150 may generate gain control signals for compensating for the calculated difference value and transmit them to each signal processing module (eg, the first signal processing module 53a and the third signal processing module 53c). there is. As a result, the output power level of the signal output through the control device 150 is, as shown, the output value of the first communication signal 112a transmitted by the integrated repeater 100 and the integrated repeater The output value of the second communication signal 112b transmitted by (100) and the output value of the third communication signal 112c transmitted by the integrated repeater 100 may be formed to be the same.

Based on this, the integrated repeater 100 of the present invention can achieve uniform communication service support by servicing signals of different input levels for each mobile communication service provider with the same output for each service provider through gain adjustment of the system.

6 is a diagram illustrating an example of synchronization adjustment of a control device according to an embodiment of the present invention.

Referring to state 601 of FIG. 6 , TDD synchronization signals are transmitted to the first communication signal OP#1 transmitted to the first signal processing module 53a and to the second signal processing module 53b, as shown in area 601a. The transmitted second communication signal OP#2 may have the same synchronization timing. The third communication signal OP#3 may have synchronization timing different from that of the first communication signal OP#1 and the second communication signal OP#2. As shown in area 602a of the table showing TDD synchronization delay comparison, the third communication signal (OP#3) has a late rising point compared to the first communication signal (OP#1) and the second communication signal (OP#2). indicate

When the above-mentioned communication signal in the 601 state is received, the control device 150 transmits the first communication signal OP#1 and the second communication signal OP# based on the synchronization timing of the third communication signal OP#3. The synchronization timing of 2) can be delayed.

Referring to state 602 of FIG. 6 , TDD synchronization signals are transmitted through the first communication signal OP#1 output through the first signal processing module 53a and the second signal processing module 53b, as shown in area 601b. Both the second communication signal OP#2 output through and the third communication signal OP#3 output through the third signal processing module 53c may have the same synchronization timing. Similarly, as shown in area 602b of the table showing TDD synchronization delay comparison, the rise timing of the first communication signal OP#1 and the second communication signal OP#2 is the third communication signal OP#3. ) may be delayed according to the rising timing. Through the above-described adjustment, all communication signals output through the first to third signal processing modules 53a, 53b, and 53c may have the same synchronization timing.

As described above, the integrated repeater 100 of the present invention receives RF signals transmitted from a plurality of mobile communication operators, detects a TDD synchronization signal in a digital part, and matches the detected plurality of TDD synchronization signals with one timing. can make it At this time, the integrated repeater 100 compares the timing of the TDD synchronization signal from the Sub-6 5G input signals transmitted from the base stations of each communication service provider, and the timing of the remaining TDD synchronization signals based on the TDD synchronization signal having the slowest timing. can be adjusted. Additionally, the integrated repeater 100 may set the gain of each communication signal differently so that the signal is output with the same output for each service provider.

7 is a diagram illustrating an example of a method of operating an integrated repeater according to an embodiment of the present invention.

Referring to FIG. 7 , in relation to the method of operating the integrated repeater of the present invention, the control device 150 of the integrated repeater 100 controls the reception interface 151 of the control unit 153 in step 701 to obtain at least one A signal of a designated frequency band (eg, Sub-6 5G frequency band) is received through the receiving antenna 110 .

In step 703, the control device 150 converts the received signal into a digital signal and detects the output of each signal while performing signal processing through the three signal processing modules 53a, 53b, and 53c. In this process, the control device 150 converts the RF part signal into a digital part signal through the ADC, transmits the broadband (300 MHz) from the digital part to the signal processing modules for each operator, and adapts to the frequency range for each operator. Filters can be applied.

In step 705, the control device 150 compares the detected outputs, and generates gain control signals for controlling the gains of the amplifiers disposed in the respective signal processing modules 53a, 53b, and 53c according to the comparison result. The obtained gain control signals may be transferred to each of the signal processing modules 53a, 53b, and 53c. Each of the signal processing modules 53a, 53b, and 53c may adjust the gain values of the output amplifiers in response to the transferred gain control signals so that signals having designated output values are output.

In addition, the control device 150 detects the synchronization of the received signal in step 707, compares the detected synchronization signals, and then sends the signal processing modules 53a, 53b, and 53c to match the synchronization in step 709. A synchronization control signal for synchronization control may be transmitted. In this process, the control device 150 checks the slowest sync timing among the sync timings of the signals, calculates a delay value so that the sync timing of the remaining signals coincides with the sync timing of the slowest signal, and corresponds to the calculated delay value. Synchronization control signals to be generated may be generated and transmitted to the signal processing modules 53a, 53b, and 53c. Meanwhile, in the above description, the control device 150 may omit steps 707 to 711.

Through the above-described process, the control device 150 uses a detector (DET module) included in signal processing modules for each service provider to determine whether a signal is output in accordance with the rated output level of the digital part, and to determine whether the output level is lower than the rated output level. If so, the gain can be adjusted so that signals are output with the same output from signal processing modules for each operator through Digital Att. The present invention detects TDD synchronization signals of a plurality of mobile communication operators rather than external devices, and synchronizes them with one timing. Meanwhile, in the above description, it has been described that the gain is adjusted by applying the rated output level to the output signal, but the present invention may also perform the gain adjustment based on the highest output among the signals of a plurality of mobile communication service providers. there is.

Meanwhile, in the description of FIGS. 1 to 7 described above, synchronization timing adjustment and output level adjustment for communication signals transmitted by three base stations have been described as examples, but the present invention is not limited thereto. For example, the repeater of the present invention performs synchronization timing adjustment and output level adjustment on communication signals transmitted by two base stations or communication signals transmitted by four or more base stations, and then transmits the adjusted communication signal to the user. It can also be provided to the terminal.

As set forth above, while this specification contains many specific implementation details, they should not be construed as limiting as to the scope of any invention or claimables, but rather as may be specific to a particular embodiment of a particular invention. It should be understood as a description of the features.

Further, while operations are depicted in the drawings in a specific order, it should not be understood that all illustrated operations must be performed or that those operations must be performed in the specific order shown or in sequential order to obtain desired results. In certain cases, multitasking and parallel processing can be advantageous. Further, the separation of various system components in the embodiments described above should not be understood as requiring such separation in all embodiments, and the program components and systems described may generally be integrated together into a single software product or packaged into multiple software products. You have to understand that you can.

The present description presents the best mode of the invention and provides examples to illustrate the invention and to enable those skilled in the art to make and use the invention. The specification thus prepared does not limit the invention to the specific terms presented. Therefore, although the present invention has been described in detail with reference to the above-described examples, a person skilled in the art may make alterations, changes, and modifications to the present examples without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be determined by the described embodiments, but by the claims.

10: Communication service environment
11, 12, 13: base station
100: integrated repeater
110, 120: antenna
150: control device
151: receiving interface
153: control unit
155: signal processing unit
152 transmission interface

Claims (7)

a receiving antenna for receiving communication signals transmitted by a plurality of base stations;
a control device coupled to the receiving antenna;
A transmission antenna for transmitting communication signals output by the control device to a user terminal;
The control device
Detecting the output level of the communication signals of each base station received through the receiving antenna,
Adjust the gain so that the output levels of the communication signals are the same;
An integrated repeater for relaying a plurality of base stations, characterized in that for transmitting each of the gain-adjusted communication signals to the transmission antenna. According to claim 1,
The control device
a signal processor for receiving and processing the signal transmitted by the reception antenna;
Including; a control unit for adjusting the gain of the signal processing unit;
The signal processing unit
a first signal processing module for detecting a communication signal related to a first base station from the signal transmitted by the receiving antenna, adjusting a gain corresponding to a gain control signal of the control unit, and outputting the adjusted gain;
A plurality of base stations comprising a second signal processing module for detecting a communication signal related to the second base station from the signal transmitted by the receiving antenna, adjusting a gain in response to a gain control signal of the control unit, and outputting the adjusted gain; Integrated relay that relays. According to claim 2,
The first signal processing module
a first attenuator for attenuating the signal transmitted by the receiving antenna;
a first filter for filtering a frequency band associated with the first base station for the attenuated signal;
a first detector for detecting an output level of the filtered signal;
A first amplifier for amplifying a signal of a frequency band related to the first base station and outputting the adjusted gain in response to the first gain control signal transmitted by the control unit;
The second signal processing module
a second attenuator for attenuating the signal transmitted by the receiving antenna;
a second filter for filtering a frequency band associated with the second base station for the attenuated signal;
a second detector for detecting an output level of the filtered signal;
An integrated repeater for relaying a plurality of base stations, comprising: a second amplifier for amplifying a signal in a frequency band related to the second base station and adjusting a gain corresponding to the second gain control signal transmitted by the controller and outputting the output; . According to claim 2,
The control unit
After comparing the output level of the communication signal related to the first base station and the output level of the communication signal related to the second base station with a designated rated power level, and generating a first gain control signal and a second gain control signal according to a difference value, An integrated repeater for relaying a plurality of base stations, characterized in that the signal is transmitted to the first signal processing module and the second signal processing module and controlled so that signals of the same output level are output. According to claim 2,
The control unit
The synchronization timing of the communication signal related to the first base station and the synchronization timing of the communication signal related to the second base station are compared, and a synchronization control signal is generated to delay the synchronization timing of communication signals related to another base station based on the relatively slow synchronization timing. and transmitting to either the first signal processing module or the second signal processing module to control signals having the same synchronization timing to be output. A method for operating an integrated repeater including a control device for receiving and processing a communication signal transmitted from a plurality of base stations using a receiving antenna and transmitting the communication signal to a user terminal through a transmitting antenna,
detecting output levels of communication signals of each base station received through the receiving antenna;
adjusting the gain so that the output levels of the communication signals become the same;
Transmitting each of the gain-adjusted communication signals to the transmit antenna;
Adjusting the gain
detecting a communication signal related to a first base station from a signal transmitted by the reception antenna using a first signal processing module and adjusting a gain in response to a first gain control signal provided by a control unit; and
and detecting a communication signal related to a second base station from a signal transmitted by the receiving antenna using a second signal processing module and adjusting a gain in response to a second gain control signal provided by the control unit. A method of operating an integrated repeater for relaying communication signals of a plurality of base stations. According to claim 6,
Comparing the synchronization timing of the first base station-related communication signal and the synchronization timing of the second base station-related communication signal, and delaying the synchronization timing of another base station-related communication signal based on the relatively slow synchronization timing; further comprising A method of operating an integrated repeater for relaying communication signals of a plurality of base stations, characterized in that.

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