KR102692079B1 - Method of securing isolation using analog beamforming and mmWave integrated repeater using the same - Google Patents

Abstract

The present invention relates to a method of operating a relay device that includes a donor device that receives a mmWave signal and a service device connected to the donor device in one enclosure, a method for operating a relay device that includes a plurality of beams that a service antenna included in the service device can output. A method of operating a mmWave repeater, comprising the step of detecting isolation and adjusting the arrangement of the array-type service antenna so that a specific beam with good isolation among the plurality of beams can be used. Initiates a supported relay device.

Description

Method of securing isolation using analog beamforming and mmWave integrated repeater using the same {Method of securing isolation using analog beamforming and mmWave integrated repeater using the same}

The present invention relates to a relay device, and more specifically, to relay device control in an environment using mmWave.

As mobile traffic usage increases exponentially, the problem of frequency shortage in the current cellular frequency band is becoming serious. To solve the cellular capacity problem, the millimeter wave (10GHz to 300GHz) band, which can use a relatively wide bandwidth, is attracting attention. Compared to existing cellular frequency bands, the millimeter band has limitations such as higher path loss and greater attenuation due to the atmosphere, water vapor, terrain, and features. However, by applying beamforming technology using multiple antennas, the path loss problem can be overcome to a certain extent. You can. Accordingly, the mmWave band is being considered as a candidate frequency band for use in order to build a next-generation cellular network that aims to support data rates 1,000 times higher than existing ones.

It is known that a wireless system that supports communication services using signals in the mmWave band (hereinafter referred to as a wireless communication system in the mmWave band) has a wireless channel environment that is very different from the existing sub-6GHz environment. Representative wireless channel characteristics of the mmWave band wireless communication system include strong linearity, which makes it very vulnerable to NLOS (Non-Line-of-Sight) environments, signal attenuation depending on distance is relatively large compared to low frequencies, and depending on the frequency, atmospheric or It is also affected by whether or not it rains. In particular, in mmWave band wireless communication systems, link disconnection can occur very quickly due to terrain features or body blocks, and when link disconnection occurs, data transmission may be stopped for a significant period of time. Even if it is not a terrain feature, a body block where a person is located between the base station device and the user terminal can cause a signal strength decrease of more than 10dB, and in a weak electric field below RSRP (Reference Signal Received Power) -90dBm, link disconnection is very likely due to a decrease in signal strength. It can happen seriously.

Therefore, the present invention provides a repeater device control method for mmWave that can provide a more stable signal transmission and reception environment through a repeater device in a wireless system environment using the mmWave band and a repeater device using the same.

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

The relay device of the present invention for achieving the above-described object includes a donor device that receives a mmWave signal, a service device that transmits a signal transmitted by the donor device to a user terminal and includes an array-type service antenna, and the donor. A device and a processor that controls the service device, wherein the processor detects the degree of isolation of a plurality of beams that can be output by a service antenna included in the service device, and selects a specific beam with good isolation among the plurality of beams. It is characterized by controlling to adjust the arrangement of the array type service antenna so that it can be used.

Here, the donor device includes a donor antenna that receives the mmWave signal from a base station device that transmits the mmWave signal, and a first signal converter connected to the donor antenna to convert the mmWave signal into a signal in an intermediate frequency band. It is characterized by

In response to this, the service device includes a second signal converter that converts the intermediate frequency band signal transmitted by the first signal converter into a mmWave band signal, and a second signal converter that transmits the mmWave band signal converted by the second signal converter. It includes a service antenna, and the service antenna includes a plurality of array antennas.

Additionally, the service antenna is characterized in that it supports steering in a range of ±50 degrees up, down, left and right.

As an example, the service antenna is characterized by being composed of 32 Array 2X2 MIMO (Multi-input Multi-output) antennas.

A method of operating a mmWave relay device according to an embodiment of the present invention is based on a repeater device including a donor device and a service device in one enclosure, and isolates a plurality of beams that the service antenna included in the service device can output. It is characterized in that it includes the step of detecting the degree of isolation and the step of adjusting the arrangement of the array-type service antenna so that a specific beam with good isolation among the plurality of beams can be used.

The method further includes the step of displaying that the isolation level is not secured when a beam whose isolation level is equal to or higher than a specified level is not detected.

In addition, the method further includes the step of indicating that isolation is secured if the output value through the service antenna is more than a specified dB.

According to the present invention, the present invention evaluates the environment in which signals can be transmitted and received in a mmWave band wireless system environment, and supports beamforming in a better direction according to the evaluation results.

In addition, the present invention can secure mmWave 5G service coverage in various environments through a relay device that supports analog beamforming, and can support the use of in-building solutions by improving service quality inside the building.

In addition, the present invention supports 2x2 MIMO (Multi-input Multi-output) to increase coverage and improve throughput performance within the building, and to secure isolation between the donor antenna and service antenna of the RF relay device to prevent damage caused by service signal oscillation. Excessive output can be suppressed and adverse effects between the relay device and the base station can be reduced.

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

Figure 1 is a diagram showing an example of a mmWave band wireless communication system according to an embodiment of the present invention.
Figure 2 is a diagram showing an example of a relay device configuration according to an embodiment of the present invention.
Figure 3 is a diagram showing an example of a processor configuration of a relay device according to an embodiment of the present invention.
Figure 4 is a diagram showing an example of a wireless system environment according to another embodiment of the present invention.
FIG. 5 is a diagram showing an example of the detailed configuration of the relay device of FIG. 4.
Figure 6 is a diagram showing an example of a method of operating a mmWave repeater according to an embodiment of the present invention.

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

However, detailed descriptions of known functions or configurations that may obscure the gist of the present invention are omitted in the following description and attached drawings. Additionally, it should be noted that the same components throughout the drawings are indicated by the same reference numerals whenever possible.

Terms or words used in the following description and drawings should not be construed as limited to their usual or dictionary meanings, and the inventor may appropriately define the concept of the term to explain his or her invention in the best way. It must be interpreted with meaning and concept consistent with the technical idea of the present invention based on the principle that it 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 the entire technical idea of the present invention, so at the time of filing the present application, various methods that can replace them are available. It should be understood that equivalents and variations may exist.

In addition, terms containing ordinal numbers, such as first, second, etc., 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, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component.

Additionally, the 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 "comprise" or "have" used in the specification are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more of the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification. It should be understood that this does not exclude in advance the presence or addition of other features, numbers, steps, operations, components, parts, or combinations thereof.

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

In addition to the terms described above, 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 to other forms without departing from the technical spirit of the present invention.

Additionally, embodiments within the scope of the present invention include computer-readable media having or transmitting computer-executable instructions or data structures stored on the computer-readable media. Such computer-readable media may 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 include RAM, ROM, EPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage, or in the form of computer-executable instructions, computer-readable instructions or data structures. It may be used to store or transmit certain program code means, and may include, but is not limited to, a physical storage medium such as any other medium that can be accessed by a general purpose or special purpose computer system. .

In the following description, in order to resolve the difficulty in securing 5G service coverage by causing a path loss that is dozens of times stronger than that of the Sub-6 band due to the propagation characteristics of the mmWave signal, the frequency of the mmWave band can be converted to a band with less loss and relayed. Provides a method. In addition, we provide a relay device that supports beamforming for in-building services in various environments depending on mmWave propagation characteristics. In particular, because isolation is affected by reflectors (e.g., buildings, trees, etc.) around the installation environment of the relay device, the present invention provides analog beamforming that can secure isolation using beamsteering without reducing gain. It provides a 2x2 MIMO relay device using technology and a beamsteering method to secure isolation.

Figure 1 is a diagram showing an example of a mmWave band wireless communication system according to an embodiment of the present invention.

Referring to FIG. 1, the wireless communication system 10 of the present invention may include a base station device 201, a relay device 100 (or a first type relay device), and a user terminal 200. The base station device 201 may include a base station (gNB) that transmits mmWave signals. The wireless communication system 10 of the present invention having this structure performs an isolation check through the mmWave integrated RF repeater 100, and supports securing isolation by steering the beam of the service antenna when isolation is not secured.

The base station device 201 may include a plurality of antennas to form beamforming in the process of transmitting mmWave band signals. The base station device 201 is a Node-B, an evolved Node-B (eNB), a Sector, a Site, a Base Transceiver System (BTS), an Access Point, and a Relay. It may be called by other terms such as node (Relay Node), RRH (Remote Radio Head), RU (Radio Unit), small cell, etc. In this specification, the base station device 201 or cell should be interpreted in a comprehensive sense indicating some areas or functions, and includes megacells, macrocells, microcells, picocells, femtocells, relay nodes, and RRHs. , RU, small cell communication range, etc., all encompassing various coverage areas. Since the various cells listed above have base station devices that control each cell, the base station device can be interpreted in two ways. For example, the base station device 201 may be a device that provides megacells, macrocells, microcells, picocells, femtocells, and small cells in relation to the wireless area, or may indicate the wireless area itself. Depending on how the wireless area is configured, eNB, RRH, antenna, RU, LPN, point, transmission/reception point, transmission point, reception point, etc. become an example of a base station device. The base station device 201 described above can transmit a designated signal to the relay device 100.

The relay device 100 may be disposed between the base station device 201 and the user terminal 200 to relay the signal of the base station device 201. In particular, the relay device 100 supports mmWave antenna beam control functions, such as beamforming and beamsteering. The relay device 100 can convert a mmWave signal into an IF signal and support the conversion function of the converted IF signal into a mmWave signal. The relay device 100 includes a 2x2 MIMO antenna and can perform a beamsteering function to secure isolation between the donor antenna and the service antenna. Through this, the relay device 100 of the present invention can minimize path loss and improve throughput performance in mmWave signal relay.

The user terminal 200 may receive a mmWave signal from at least one of the base station device 201 and the relay device 100, and extract a message transmitted through the received mmWave signal. To this end, the user terminal 200 may include a terminal antenna for transmitting and receiving the mmWave signal, a terminal processor connected to the terminal antenna, a terminal memory, a display, etc. Meanwhile, although the drawing shows two user terminals 200, the present invention is not limited thereto. For example, two or more user terminals 200 may be placed within the coverage area of the relay device 100. Then, the user terminal 200 can use communication services through the relay device 100 and the base station device 201.

Figure 2 is a diagram showing an example of a relay device configuration according to an embodiment of the present invention.

Referring to FIG. 2, the relay device 100 according to an embodiment of the present invention includes a donor device 110 (or a first type donor device or a first donor device), a processor 150, and a service device 120 (or a second type donor device or a second donor device). Additionally, the relay device 100 may include a printed circuit board on which at least a portion of the donor device 110, the service device 120, and the processor 150 are mounted, and a case in which the printed circuit board is embedded. . Here, the donor antennas included in the donor device 110 and the service antennas included in the service device 120 may be placed outside the case to transmit and receive mmWave signals. Alternatively, when the antennas are disposed inside the case, holes exposing at least part of the antennas to the outside are formed in the case in an area adjacent to the area where the antennas are arranged, or at least part of the case is used to transmit and receive signals through the antennas. It can be formed from any available material.

The donor device 110 may include a plurality of donor antennas 111 and a first signal conversion unit 112. The donor antennas 111 may include, for example, a plurality of 32 array antennas. Each of the donor antennas 111 may be arranged to point in a direction in which signals transmitted from the base station device 201 can be received. The donor antennas 111 may form beamforming in the direction of the base station device 201 to receive mmWave signals transmitted by the base station device 201. Additionally, beam steering may be performed on the donor antennas 111 to form beamforming in the direction of the base station device 201. The orientation direction of these donor antennas 111 may be determined and fixed during the initial installation process of the relay device 100. The first signal conversion unit 112 may convert the mmWave signal received by the donor antennas 111 into an intermediate frequency (eg, a frequency band lower than the mmWave signal). The first signal converter 112 may transmit the changed signal of the intermediate frequency band to the second signal converter 122 through the processor 150.

The service device 120 may include a second signal conversion unit 122 and a plurality of service antennas 121. The second signal conversion unit 122 may be connected to the first signal conversion unit 112 through the processor 150. The second signal converter 122 may receive a signal in the intermediate frequency band transmitted by the first signal converter 112. The second signal converter 122 may convert the received signal in the intermediate frequency band back into a signal in the mmWave band and then transmit the signal to the service antennas 121. The service antennas 121 may transmit the mmWave signal provided by the second signal conversion unit 122 in a designated beamforming direction. The service antennas 121 of the service device 120 may perform beam steering in response to the control of the processor 150 to improve isolation. The service antennas 121 may have the same or similar physical structure as the donor antennas 111. For example, the service antennas 121 may be composed of a plurality of 32 array antennas. The service antennas 121 are arranged in designated positions to transmit mmWave signals to the outside of the case of the repeater 100, and are used for beam steering in a specific direction to improve isolation from the donor antennas 111. The signal radiation direction can be determined by The service beam transmitted through the service antennas 121 supports steering of ±50 degrees (up/down/left/right) and can be configured to enable steering in a total of 58 directions, including bore sight. .

The processor 150 is disposed between the donor device 110 and the service device 120 and can process signal relay in the process of transferring the signal received by the donor device 110 to the service device 120. there is. Alternatively, the processor 150 may control signal transmission between the first signal conversion unit 112 and the second signal conversion unit 122 of the donor device 110. In particular, the processor 150 of the present invention detects the degree of isolation of the service device 120 and directs the service antennas 121 of the service device 120 toward a direction in which the degree of isolation is relatively good or the service antennas 121 ) Beam steering can be controlled so that the beamforming direction of ) is directed in a relatively good direction. Beam steering operation can be achieved, for example, by adjusting the array arrangement of the service antennas 121. In this regard, each of the service antennas 121 may include an array of a plurality of antenna pieces and a plurality of switches capable of switching the antenna pieces.

Figure 3 is a diagram showing an example of a processor configuration of a relay device according to an embodiment of the present invention.

Referring to Figure 3, the relay device 100 according to an embodiment of the present invention may include a signal transmission processing unit 151, an isolation measurement unit 153, a service antenna control unit 155, and a donor antenna control unit 157. You can.

The signal transfer processing unit 151 may process signal transfer between the first signal conversion unit 112 and the second signal conversion unit 122. For example, the signal transmission processing unit 151 may control the intermediate frequency band signal converted by the first signal conversion unit 112 to be transmitted to the second signal conversion unit 122. In this process, the signal transmission processing unit 151 can detect the strength of the transmitted signal and determine the status of the currently transmitted signal. The signal transmission processing unit 151 may recover or emphasize at least some signals during the signal transmission process and then transmit them.

The isolation measurement unit 153 may measure the isolation degree in response to a request for execution of the isolation measurement function of the relay device 100. The request to execute the isolation measurement function may be generated based on predefined scheduling information. Alternatively, requests to execute the isolation measurement function may occur at regular intervals. Alternatively, the isolation measurement unit 153 may perform isolation measurement when the change in intensity of the signal transmitted from the base station device 201 and received by the relay device 100 is greater than or equal to a predetermined value. Alternatively, the isolation measurement unit 153 may measure the isolation of the service antennas 121 when the beamforming direction of the donor antennas 111 changes. Alternatively, the isolation measurement unit 153 may perform isolation measurement if the change in signal output strength of at least one of the donor antennas 111 and the service antennas 121 is greater than a specified value. When the isolation check function starts, the isolation measurement unit 153 controls the service antenna control unit 155 to check isolation based on the bore sight, and after the bore sight isolation check is completed, 57 By sequentially steering the beams in each direction, the final decision can be made on the beam direction that secures the most desired isolation. Here, the isolation measurement unit 153 can set the beam direction based on the bore sight when isolation is secured based on the bore sight. Beamforming forms a beam in a specific receiver direction through software, and the beamsteering range (Vertical, Horizontal) can be 100 degrees. The isolation measurement unit 153 performs an isolation check, and when isolation is not secured, it performs an isolation check again after service beam steering, and can perform the operation until isolation of a specified level or higher is secured.

When a request for beam steering is received by the isolation measurement unit 153, the service antenna control unit 155 may adjust beamforming of the service antennas 121 in response. For example, the service antenna control unit 155 may adjust the antenna array of the service antennas 121 to select a beamforming direction that provides the best isolation.

The donor antenna control unit 157 can adjust the beamforming direction of the donor antennas 111. For example, when the isolation degree of the service antennas 121 indicates an isolation degree less than a predefined level, the donor antenna control unit 157 detects the beam of the donor antennas 111 in response to a request from the isolation measurement unit 153. The forming direction can be adjusted. At this time, in the process of receiving the mmWave signal transmitted by the base station device 201, the donor antenna control unit 157 selects a beam different from the currently selected (or operating) beam among beams having a received signal strength above a predefined level ( Alternatively, the antenna array can be adjusted to achieve different beamforming.

As described above, the relay device 100 of the present invention operates 32 Array 2x2 MIMO antennas for mmWave beam control functions (Beamforming/BeamSteering), and includes a donor device 110 and a service device 120 to minimize path loss. ) into one enclosure to convert mmWave signals to IF, and supports the function of converting the converted IF signals to mmWave signals.

FIG. 4 is a diagram showing an example of a wireless system environment according to another embodiment of the present invention, and FIG. 5 is a diagram showing an example of the detailed configuration of the relay device 300 of FIG. 4.

Referring to FIG. 4, the wireless system environment 11 according to another embodiment of the present invention may include a base station device 201, a second type relay device 300, and a user terminal 200. Here, since the base station device 201 and the user terminal 200 have the same configuration as the base station device 201 and the user terminal 200 previously described in FIG. 1, related descriptions will be omitted.

Referring to FIG. 5, a second type relay device 300 according to another embodiment of the present invention may include a second donor device 310, a cable 350, and a second service device 320.

The cable 350 may connect the second donor device 310 and the second service device 320. For example, this cable 350 may serve as a wired channel for communication between the second donor device 310 and the second service device 320. The cable 350 may include, for example, a coaxial cable. Alternatively, the cable 350 may include optical fiber.

The second donor device 310 may include a plurality of donor antennas 311 and a donor signal conversion unit 312. The plurality of donor antennas 311 may have substantially the same configuration as the donor antennas previously described in FIG. 2.

The donor signal conversion unit 312 can convert the mmWave signal received by the donor antennas 311 into a signal in the intermediate frequency band. The donor signal converter 312 may load the signal converted into the intermediate frequency band onto the cable 350 and transmit it to the service signal converter 322.

The second service device 320 may include a service signal conversion unit 322 and a plurality of service antennas 321. Here, the plurality of service antennas 321 may include the same configuration as the service antennas previously described in FIG. 2.

The service signal converter 322 may convert the signal in the intermediate frequency band received through the cable 350 back into a mmWave signal. The service signal conversion unit 322 may output the converted mmWave signal through the service antennas 321.

Meanwhile, the second type relay device 300 may also include a processor for controlling the second donor device 310 and the second service device 320, like the first type relay device 100 described above. , isolation degree detection and beam steering of the service antennas 321 of the second service device 320 can be controlled.

The second type relay device 300 of the present invention described above separates the donor device 310 and the service device 320, converts each mmWave signal to IF, and then implements the function of converting the IF signal to mmWave signal for transmission. A separate type that increases the distance can be provided.

Figure 6 is a diagram showing an example of a method of operating a mmWave repeater according to an embodiment of the present invention.

Referring to FIG. 6, the processor 150 of the relay device 100 (or the relay device 300) may begin measuring the isolation degree (ISOLATION) in step 601. The timing for starting the isolation measurement may follow a predefined schedule, or may depend on a specific event (e.g., a change in the wireless environment of the donor device 110 and the service device 120, or the initial installation of the relay device 100). there is.

In step 603, the processor 150 may operate a predefined power so that the service antenna has a performance of 20dB in the uplink reception mode.

In step 605, the processor 150 may detect the uplink output (UL OUTPUT DET) and check whether the value is above a certain predefined level (e.g., uplink output minimum level, UL OUTPUT DET MIN LEVEL). Here, when the uplink output detection value is higher than the minimum uplink output level, in step 607, the processor 150 may perform a standby operation for a designated time. The waiting operation may be a predefined period of time. When the waiting time elapses, the processor 150 may re-perform the following operations in step 601.

If the uplink output detection value is less than the uplink output minimum level, in step 609, the processor 150 may check the donor reception detection value (DONOR RX DET CHECK). And in step 611, the processor 150 can check whether the uplink output value is higher than the isolation limit level (ISO LIMIT LEVEL). If the uplink output value is above the isolation limit level, in step 613, the processor 150 may check whether the number of service beams is less than a predefined value, such as 57. Here, the service number 57 may vary depending on the beam angle change. If the number of service beams is less than the limit value (e.g., 57), in step 615, the processor 150 adds 1 to the number of service beams (e.g., beam steering), branches to step 609, and re-performs the following operations. You can. Here, the operation of adding 1 to the number of service beams may include the operation of controlling the switches of the array antenna to adjust the arrangement of the antenna pieces of the array antenna. Meanwhile, in step 613, if the number of service beams is equal to the limit number (or the maximum number of different beams that the service antenna can provide), in step 617, the processor 150 displays the isolation degree in the GUI (or display). Unsecured can be displayed (GUI control In this regard, the relay device 100 may further include a display to indicate that the degree of isolation has not been secured. Alternatively, the processor 150 may transmit the unsecured level of isolation to a designated administrator terminal. In this regard, the relay device 100 may further include a communication circuit capable of communicating with the manager terminal.

Meanwhile, in step 611, if the uplink output detection value is less than (less than) the isolation limit level, in step 619, the processor 150 may reduce the performance of the service antenna to -1dB. In step 621, the processor 150 checks the uplink output value, and in step 623, the processor 150 checks whether the uplink output detection value is equal to or higher than the isolation limit level. In step 623, if the uplink output detection value is less than (less than) the isolation limit level, in step 625, the processor 150 may check whether the performance (or output) of the service antenna is 0. If the performance of the service antenna is not 0, the processor 150 may branch to step 619 and re-perform the following operations. If the service antenna performance is 0, in step 627, the processor 150 sets the output of the service antenna to 20dB and drives the TDD auto mode, and in step 629, secure isolation is displayed on the GUI and FULL GAIN normal operation is performed. It can be handled.

Meanwhile, in step 623, if the uplink output detection value is above the isolation limit level, in step 631, the processor 150 can check whether the service antenna performance is 18 dB or more. If the service antenna performance is less than 18 dB, in step 633, the processor 150 may adjust the downlink antenna and uplink antenna. In this process, the processor 150 can apply -3dB from the existing GAIN of the service antenna. Next, in step 635, the processor 150 sets the service antenna to 20dB and drives the TDD auto mode, and in step 637, it can display the secured isolation level on the GUI. Additionally, the processor 150 may display the isolation limit secured on the GUI in step 637.

Meanwhile, in step 631, if the performance of the service antenna is 18 dB or more, in step 639, the processor 150 may check whether the number of service beams is less than the limit number (eg, 57). If the number of service beams is equal to the limit number, in step 641, the processor 150 may display isolation not secured on the GUI and display uncontrolled on the GUI. If the number of service beams is less than the limit number in step 639, the processor may add 1 to the number of service beams in step 643, then branch to step 621 and re-perform the following operations for other beams.

As described above, when transmission and reception of mmWave signals are carried out in one body, if isolation is not secured, the product's transmission signal is applied to the product's receiver, which causes the signal to oscillate, resulting in excessive output and damage to the repeater and base station. , it may affect nearby devices. Accordingly, the present invention checks the isolation of the relay device 100, and if isolation is not secured due to the surrounding environment (reflectors, etc.), the beam direction where isolation is secured can be searched by steering the service beam. In other words, due to the reflection characteristics of the mmWave signal, whether or not isolation is secured becomes sensitive depending on the surrounding environment in which the relay device 100 is installed. However, the present invention checks the beam direction where isolation is secured by steering the service beam, and checks the relay device ( 100) supports mmWave 5G services.

In this way, by supporting the beam control function, the relay device 100 of the present invention can support the beam provision function through vertical beam control, beam width and coverage control, and obstacle avoidance.

As described above, although this specification contains details of numerous specific implementations, these should not be construed as limitations on the scope of any invention or what may be claimed, but rather may be specific to particular embodiments of a particular invention. It should be understood as a description of features.

Additionally, although operations are depicted in the drawings in a specific order, this should not be construed as requiring that those operations be performed in the specific order or sequential order shown or that all of the depicted operations must be performed to obtain desirable results. In certain cases, multitasking and parallel processing may be advantageous. Additionally, the separation of various system components in the above-described embodiments should not be construed as requiring such separation in all embodiments, and the described program components and systems may generally be integrated together into a single software product or packaged into multiple software products. You must understand that it is possible.

The present description sets forth the best mode of the invention and provides examples to illustrate the invention and to enable any person skilled in the art to make and use the invention. The specification prepared in this way does not limit the present invention to the specific terms presented. Accordingly, although the present invention has been described in detail with reference to the above-described examples, those skilled in the art may make modifications, changes, and variations to the 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 scope of the patent claims.

10, 11: Wireless communication system
200: user terminal
201: base station device
100, 300: relay device
110, 310: donor device
111: donor antenna
112: First signal conversion unit
120: service device
121: Service antenna
122: Second signal conversion unit

Claims (8)

A donor device including a donor antenna that receives a mmWave signal;
a service device that transmits a signal transmitted by the donor device to a user terminal and includes an array-type service antenna;
Includes a processor that controls the donor device and the service device,
The processor,
Detecting the degree of isolation of a plurality of beams that can be output by a service antenna included in the service device,
Controlling the arrangement of the array-type service antenna so that a specific beam with good isolation among the plurality of beams can be used,
If the isolation degree of the service antenna is less than a predefined level, it is set to perform beamforming direction adjustment of the donor antenna,
In relation to detecting the isolation of the service antenna, detect the uplink output values of all beams that the service antenna can output,
A relay device for mmWave, characterized in that it is set to display unsecured isolation when the uplink output values of all beams are less than a predefined minimum uplink output level and more than a predefined isolation limit level. According to paragraph 1,
The donor device is
The donor antenna receiving the mmWave signal from a base station device transmitting the mmWave signal;
A repeater device for mmWave, comprising: a first signal conversion unit connected to the donor antenna to convert the mmWave signal into a signal of an intermediate frequency band. According to paragraph 2,
The service device is
a second signal converter converting the intermediate frequency band signal transmitted by the first signal converter into a mmWave band signal;
It includes the service antenna that transmits the mmWave band signal converted by the second signal converter,
The service antenna is
A relay device for mmWave, characterized in that it includes a plurality of array antennas. According to paragraph 3,
The service antenna is
A relay device for mmWave that supports steering in the range of ±50 degrees up, down, left, and right. According to paragraph 1,
The service antenna is
A relay device for mmWave, characterized in that it consists of 32 Array 2X2 MIMO (Multi-input Multi-output) antennas. In a method of operating a relay device including a donor device that receives a mmWave signal and a service device connected to the donor device in one enclosure,
Detecting the degree of isolation for a plurality of beams that can be output by a service antenna included in the service device;
adjusting the arrangement of an array-type service antenna so that a specific beam with good isolation among the plurality of beams can be used;
When the isolation degree of the service antenna is less than a predefined level, performing beamforming direction adjustment of the donor antenna of the donor device,
In relation to detecting the isolation of the service antenna, detecting uplink output values of all beams that the service antenna can output;
If the uplink output values of all the beams are less than a predefined uplink output minimum level and more than a predefined isolation limit level, displaying isolation not secured; a repeater device for mmWave comprising a. How to operate. delete According to clause 6,
A method of operating a mmWave relay device further comprising: indicating that isolation is secured if the output value through the array-type service antenna is greater than or equal to a specified dB.

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