WO2021125380A1

WO2021125380A1 - 5g customer premises equipment

Info

Publication number: WO2021125380A1
Application number: PCT/KR2019/017961
Authority: WO
Inventors: 김재완; 이주희; 유승우
Original assignee: 엘지전자 주식회사
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2021-06-24

Abstract

The present invention provides 5G customer premises equipment (CPE). The 5G CPE may comprise: a main body which is configured to be rotatable in the left-and-right and up-and-down directions so as to receive a 5G wireless signal; and a controller which, when the power button of the CPE is turned on, performs a control operation to display a specific beam direction through a device manager application, wherein the controller may display the direction and signal strength of a boresight beam as the main body moves according to the specific beam direction.

Description

5G communication relay device

The present invention relates to a 5G communication relay device. A specific implementation relates to a 5G Customer Premises Equipment (CPE) that transmits a 5G radio signal between a 5G base station and an electronic device, and a method for controlling the same.

Electronic devices may be divided into mobile/portable terminals and stationary terminals depending on whether they can be moved. Again, the electronic device can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the electronic device.

The functions of electronic devices are diversifying. For example, there are functions for data and voice communication, photo and video shooting through a camera, voice recording, music file playback through a speaker system, and an image or video output to the display unit. Some terminals add an electronic game play function or perform a multimedia player function. In particular, recent mobile terminals can receive multicast signals that provide broadcast and visual content such as video or television programs.

As such electronic devices have diversified functions, they are implemented in the form of multimedia devices equipped with complex functions, such as, for example, taking pictures or videos, playing music or video files, and receiving games and broadcasts. have.

In order to support and increase the function of the electronic device, it may be considered to improve the structural part and/or the software part of the terminal.

In addition to the above attempts, a wireless communication system using LTE communication technology has recently been commercialized for electronic devices to provide various services. In addition, it is expected that a wireless communication system using 5G communication technology will be commercialized in the future to provide various services. Meanwhile, some of the LTE frequency bands may be allocated to provide 5G communication services.

In this regard, the mobile terminal may be configured to provide 5G communication services in various frequency bands. Recently, attempts have been made to provide a 5G communication service using the Sub6 band below the 6GHz band. However, in the future, it is expected that 5G communication service will be provided using millimeter wave (mmWave) band other than Sub6 band for faster data rate.

Meanwhile, as a frequency band to be allocated for 5G communication service in such a millimeter wave (mmWave) band, the 28 GHz band, the 39 GHz band, and the 64 GHz band are being considered. On the other hand, in the 28 GHz band, 39 GHz and 64 GHz bands, there is a problem in that the cell coverage providing the communication service is reduced because the wavelength is short. To solve this problem, in the millimeter wave (mmWave) band, it may be considered to use a 5G communication relay apparatus that relays 5G wireless signals between a base station and an electronic device, that is, 5G CPE (Customer Premises Equipment). .

In particular, when an electronic device is used indoors, it may be difficult to pass through a structure such as a building because the 5G wireless signal has a short wavelength. However, 5G wireless signals may pass through some structures such as windows of buildings. Therefore, the 5G communication relay device, that is, the 5G CPE, should be placed adjacent to the window area of the building. In particular, since the 5G radio signal from the 5G base station has directivity, it is necessary to arrange the 5G CPE at a specific angle in the direction of the 5G radio signal at a specific location.

On the other hand, due to the high frequency characteristics of 5G NR, 5G wireless signals have very high straightness. Specifically, 5G NR uses very high frequency in the 28GHz band, so its straightness is very high. Therefore, the 5G CPE should be easy to adjust to match the direction with the base station. In other words, 5G communication using a very high frequency band, especially mmWave, has very high straightness, and communication performance may deteriorate if the direction with the 5G repeater or base station does not match. Therefore, there is a need for a method capable of controlling the orientation direction of the 5G CPE.

SUMMARY OF THE INVENTION The present invention aims to solve the above and other problems. Accordingly, one object of the present invention is to install the 5G CPE in the direction of the 5G base station.

In addition, another object of the present invention is to provide a user with a direction in which the received signal is maximized when the user moves the terminal through the UI linked with the 5G CPE.

Another object of the present invention is to provide a method for controlling 5G CPE according to power on/off, etc. while installing 5G CPE in an optimal direction.

In order to achieve the above or other objects, there is provided a 5G communication relay device according to the present invention. The 5G communication repeater (CPE) includes a main body configured to be rotatable in left and right directions and up and down directions to receive a 5G radio signal; and a control unit for controlling to display a specific beam direction through a device management application when the power button on the communication relay device is in an ON state, wherein the control unit controls to display a specific beam direction according to the specific beam direction. The sight beam direction and signal strength can be displayed.

According to an embodiment, the controller may transmit a beam ID (BID) of a current beam and a reception quality (BRSRP) of the current beam to the device management application. Meanwhile, when the optimal beam is selected, the device management application may transmit direction information on the optimal beam direction to the controller.

According to an embodiment, when the power button is turned on, the controller may receive beam verification information and beam direction information for beam detection. Meanwhile, the controller may select an optimal beam by performing a beam selection process based on the beam direction information and the current direction information of the main body.

According to an embodiment, the controller may perform a beam search process around an area predicted in the direction of the optimal beam based on the beam verification information and the beam direction information. Meanwhile, in the beam search process, the beam search process may be performed using a beam ID of an area predicted in the direction of the optimal beam.

According to an embodiment, when the optimal beam is selected and an input related to movement of the main body is received from the device management application, the controller may move the main body in the optimal beam direction. Also, the controller may change the current beam to a beam adjacent to the optimal beam to acquire reception quality.

According to an embodiment of the present disclosure, the controller may determine a final position to which the main body is to be fixed by comparing the optimal beam direction with the signal strength of the changed adjacent beam.

According to an embodiment, when the control unit transmits ID information for the communication relay device, the device management application may transmit beam verification information and beam direction information corresponding to the ID information to the control unit.

According to an embodiment, a memory configured to store information related to the beam verification information and the beam direction information may be further included. Meanwhile, when the power button is turned on, the controller may obtain information related to the beam verification information and the beam direction information from the memory, and perform the beam selection process using the information.

According to an embodiment, when the ID information about the communication relay device is transmitted, the first beam verification information and the first beam direction information corresponding to the ID information may be received from the device management application.

According to an embodiment, when the first beam verification information and the first beam direction information match the second beam verification information and the second beam direction information obtained from the memory, the beam selection process may be performed.

According to an embodiment, an array antenna disposed inside the body and configured to generate a directional beam through a plurality of antenna elements; and a transceiver circuit configured to vary a phase of a signal applied to the plurality of antenna elements.

According to an embodiment, the controller may control the transceiver circuit to perform the beam selection process based on the beam direction information and the current direction information of the main body.

According to an embodiment, the controller may transmit optimal beam ID information corresponding to the optimal beam to the transceiver circuit. Meanwhile, the transceiver circuit may control a phase of a signal applied to the plurality of antenna elements based on the optimal beam ID information.

According to an embodiment, the array antenna may include a plurality of array antennas to perform multiple input/output (MIMO) with the 5G base station. Meanwhile, when the power button is turned on, the controller may perform the beam selection process using any one of the plurality of array antennas.

According to an embodiment, when the power button is turned on, a first beam selection process may be performed using a first array antenna among the plurality of array antennas. Meanwhile, a second beam selection process may be performed using a second array antenna among the plurality of array antennas.

According to an embodiment, a direction between the first direction of the first optimal beam selected in the first beam selection process and the second direction of the second optimal beam selected in the second beam selection process may be selected as the optimal beam direction. .

According to an embodiment, when it is determined that beam blockage has occurred while the communication relay device is operating, the controller may select the optimal beam by performing the beam selection process. In addition, the controller may control to display information related to the direction so that the main body is moved in a direction corresponding to the optimal beam.

According to an embodiment, when the beam blocking occurs and the main body is moved, the controller changes the current beam corresponding to the optimal beam in the direction in which the main body is moved to a beam adjacent to the optimal beam to obtain reception quality. have. In addition, the controller may determine a final position to which the main body is fixed by comparing the optimal beam direction with the signal strength of the changed adjacent beam.

Meanwhile, the technical effects of the optimal installation method of the 5G communication repeater (CPE) and the method of controlling the same will be described as follows.

According to the present invention, when installing the mmWave CPE terminal to which the beam search algorithm is applied, it is possible to find and install a beam direction having a good transmit/receive signal.

In addition, according to the present invention, it is possible to provide a 5G CPE that automatically informs the beam direction of the base station with the strongest signal.

In addition, according to the present invention, it is possible to provide a 5G CPE that automatically informs the beam direction of a base station having the strongest signal using a plurality of array antennas.

Further scope of applicability of the present invention will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present invention are given by way of illustration only, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art.

1 shows a detailed configuration of a 5G CPE or electronic device according to the present invention.

2 shows the configuration of a wireless communication unit of an electronic device or 5G communication relay device capable of operating in a plurality of wireless communication systems according to the present invention.

3 is a conceptual diagram of a method for installing a 5G communication relay device, that is, a 5G CPE according to the present invention.

4A and 4B are flowcharts of a control operation performed in a 5G communication relay device, ie, a 5G CPE, according to the present invention.

5A is a flowchart illustrating an internal configuration of a 5G CPE according to the present invention and a 5G CPE control operation with an electronic device.

5B shows a detailed configuration of a 5G CPE and an electronic device according to the present invention.

5C shows a detailed configuration of a 5G CPE that transmits a 5G radio signal between a 5G base station and a UE according to an embodiment.

6A shows a flowchart of a method for controlling positioning and tilting of a 5G CPE according to the present invention.

6B shows various LEDs provided in the 5G CPE according to the present invention.

7 shows an arrangement structure of a base station and a 5G CPE according to the present invention.

8 shows a left-right rotation structure and a vertical rotation structure of the 5G communication relay device according to the present invention.

9 illustrates a case before beam directions are aligned in a 5G communication relay device and a device management application according to an embodiment.

10 illustrates a case in which beam directions are aligned in the 5G communication relay device and the device management application according to FIG. 9 .

11A illustrates an operation performed in the 5G CPE and a device management application and an information exchange process therebetween when installing or changing the installation of the 5G CPE according to an embodiment.

11B shows a procedure performed in advance for beam verification and beam detection before installing a 5G CPE, and a procedure for exchanging information with a device management application thereafter.

12A illustrates a plurality of antenna beams in relation to a beam verification process according to an embodiment.

12B shows a lookup table generated according to a beam verification process for a plurality of antenna beams of FIG. 12A.

13A shows a detailed configuration of a 5G communication relay device according to an embodiment.

13B is a conceptual diagram illustrating beams generated so that different array antennas are directed toward a 5G base station according to an embodiment.

14 illustrates a block diagram of a wireless communication system to which the methods proposed in the present specification can be applied.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numerals regardless of reference numerals, and overlapping descriptions thereof will be omitted. The suffixes "module" and "part" for the components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have a meaning or role distinct from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that no other element is present in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Electronic devices described herein include mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation systems, and slate PCs. , tablet PCs, ultrabooks, wearable devices, for example, watch-type terminals (smartwatch), glass-type terminals (smart glass), HMD (head mounted display), etc. may be included. have. In addition, the 5G communication relay device described herein may be a CPE (Customer Premises Equipment).

However, it will be readily apparent to those skilled in the art that the configuration according to the embodiment described in this specification may be applied to a fixed terminal such as a digital TV, a desktop computer, and a digital signage, except when applicable only to a mobile terminal. will be.

1 shows a detailed configuration of a 5G CPE or electronic device according to the present invention. The electronic device 100 includes a transceiver 110 , an output unit 150 , and a control unit 180 corresponding to a wireless communication unit.

More specifically, among the components, the transceiver 110 is between the electronic device 100 and the wireless communication system, between the electronic device 100 and another electronic device 100 , or between the electronic device 100 and an external server. It may include one or more modules that enable wireless communication between them. In addition, the transceiver 110 may include one or more modules for connecting the electronic device 100 to one or more networks. Here, the one or more networks may be, for example, a 4G communication network and a 5G communication network.

The transceiver 110 may include at least one of a 4G wireless communication module, a 5G wireless communication module, a short-range communication module, and a location information module.

The 4G wireless communication module can transmit and receive 4G signals with a 4G base station through a 4G mobile communication network. In this case, the 4G wireless communication module may transmit one or more 4G transmission signals to the 4G base station. In addition, the 4G wireless communication module may receive one or more 4G reception signals from the 4G base station.

In this regard, Up-Link (UL) Multi-Input Multi-Output (MIMO) may be performed by a plurality of 4G transmission signals transmitted to the 4G base station. In addition, Down-Link (DL) Multi-Input Multi-Output (MIMO) may be performed by a plurality of 4G reception signals received from a 4G base station.

The 5G wireless communication module can transmit and receive 5G signals with a 5G base station through a 5G mobile communication network. Here, the 4G base station and the 5G base station may have a Non-Stand-Alone (NSA) structure. For example, the 4G base station and the 5G base station may be a co-located structure disposed at the same location in a cell. Alternatively, the 5G base station may be disposed in a stand-alone (SA) structure at a location separate from the 4G base station.

The 5G wireless communication module can transmit and receive 5G signals with a 5G base station through a 5G mobile communication network. In this case, the 5G wireless communication module may transmit one or more 5G transmission signals to the 5G base station. In addition, the 5G wireless communication module may receive one or more 5G reception signals from the 5G base station.

In this case, the 5G frequency band may use the same band as the 4G frequency band, and this may be referred to as LTE re-farming. Meanwhile, as the 5G frequency band, the Sub6 band, which is a band of 6 GHz or less, may be used.

On the other hand, a millimeter wave (mmWave) band may be used as a 5G frequency band to perform broadband high-speed communication. When a millimeter wave (mmWave) band is used, the electronic device 100 may perform beam forming for communication coverage expansion with a base station.

Meanwhile, regardless of the 5G frequency band, the 5G communication system may support a larger number of Multi-Input Multi-Output (MIMO) in order to improve transmission speed. In this regard, Up-Link (UL) MIMO may be performed by a plurality of 5G transmission signals transmitted to the 5G base station. In addition, Down-Link (DL) MIMO may be performed by a plurality of 5G reception signals received from a 5G base station.

Meanwhile, the transceiver 110 may be in a dual connectivity (DC) state with the 4G base station and the 5G base station through the 4G wireless communication module and the 5G wireless communication module. In this way, the dual connection with the 4G base station and the 5G base station may be referred to as EN-DC (EUTRAN NR DC). Here, EUTRAN is an Evolved Universal Telecommunication Radio Access Network, which means a 4G wireless communication system, and NR is New Radio, which means a 5G wireless communication system.

On the other hand, if the 4G base station and the 5G base station have a co-located structure, throughput improvement is possible through inter-CA (Carrier Aggregation). Therefore, the 4G base station and the 5G base station In the EN-DC state, a 4G reception signal and a 5G reception signal can be simultaneously received through the 4G wireless communication module and the 5G wireless communication module.

The short-range communication module is for short range communication, and includes Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and Near Field (NFC). Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology may be used to support short-distance communication. Such a short-distance communication module, between the electronic device 100 and the wireless communication system, between the electronic device 100 and another electronic device 100, or the electronic device 100 and other It is possible to support wireless communication between networks in which the electronic device 100 or an external server is located. The local area network may be a local area network (Wireless Personal Area Networks).

Meanwhile, short-range communication between electronic devices may be performed using the 4G wireless communication module and the 5G wireless communication module. In an embodiment, short-distance communication may be performed between electronic devices using a device-to-device (D2D) method without going through a base station.

Meanwhile, carrier aggregation (CA) may be performed using at least one of a 4G wireless communication module and a 5G wireless communication module and a Wi-Fi communication module for transmission speed improvement and communication system convergence. In this regard, 4G + WiFi carrier aggregation (CA) may be performed using the 4G wireless communication module and the Wi-Fi communication module. Alternatively, 5G + WiFi carrier aggregation (CA) may be performed using the 5G wireless communication module and the Wi-Fi communication module.

The location information module is a module for acquiring a location (or current location) of an electronic device, and representative examples thereof include a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, if the electronic device utilizes a GPS module, it may acquire the location of the electronic device by using a signal transmitted from a GPS satellite. As another example, if the electronic device utilizes the Wi-Fi module, the location of the electronic device may be acquired based on information of the Wi-Fi module and a wireless access point (AP) that transmits or receives a wireless signal. If necessary, the location information module may perform any function of the other modules of the transceiver 110 to obtain data on the location of the electronic device as a substitute or additionally. The location information module is a module used to obtain the location (or current location) of the electronic device, and is not limited to a module that directly calculates or obtains the location of the electronic device.

Specifically, if the electronic device utilizes the 5G wireless communication module, it can acquire the location of the electronic device based on the information of the 5G wireless communication module and the 5G base station that transmits or receives the wireless signal. In particular, since the 5G base station of the millimeter wave (mmWave) band is deployed in a small cell having a narrow coverage, it is advantageous to obtain the location of the electronic device.

The output unit 150 is for generating an output related to visual, auditory or tactile sense, and may include at least one of a display unit, a sound output unit, a haptip module, and an optical output unit. The display unit may implement a touch screen by forming a layer structure with the touch sensor or being integrally formed. Such a touch screen may function as a user input unit providing an input interface between the electronic device 100 and a user, and may provide an output interface between the electronic device 100 and a user.

In addition to the operation related to the application program, the controller 180 generally controls the overall operation of the electronic device 100 . The controller 180 may provide or process appropriate information or functions to the user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 170 .

Also, the controller 180 may control at least some of the components discussed with reference to FIG. 1 in order to drive an application program stored in the memory. Furthermore, in order to drive the application program, the controller 180 may operate at least two or more of the components included in the electronic device 100 in combination with each other.

Meanwhile, a plurality of antennas disposed on the side of the terminal may be implemented in four or more to support MIMO. In addition, when the 5G wireless communication module operates in a millimeter wave (mmWave) band, as each of the plurality of antennas is implemented as an array antenna, a plurality of array antennas may be disposed in the electronic device.

2 shows the configuration of a wireless communication unit of an electronic device or 5G communication relay device capable of operating in a plurality of wireless communication systems according to the present invention. Here, the 5G communication relay device according to the present invention is a device that transmits a 5G radio signal between a base station and an electronic device, that is, a 5G UE. In this regard, the 5G communication relay device, that is, 5G Customer Premises Equipment (CPE) may include a plurality of array antennas ANT1 to ANT4 to optimally transmit and receive 5G radio signals in a specific direction. In addition, the 5G communication relay device may include a power and phase control unit 230 to control the beam direction of each of the array antennas ANT1 to ANT4. In this regard, the power and phase controller 230 may control the magnitude and phase of a signal applied to each antenna element of each of the array antennas ANT1 to ANT4 . In this regard, the transceiver 520 of FIG. 5B may correspond to the RFIC 250 of FIG. 2 . Also, the controller 510 of FIG. 5B may correspond to the modem 400 and the AP 450 of FIG. 2 .

Referring to FIG. 2 , the electronic device or 5G communication relay device further includes a first power amplifier 210 , a second power amplifier 220 , and an RFIC 250 . Also, the electronic device may further include a modem 400 and an application processor (AP) 500 . Here, the modem 400 and the application processor AP 450 may be physically implemented on a single chip, and may be implemented in a logically and functionally separated form. However, the present invention is not limited thereto and may be implemented in the form of physically separated chips depending on the application.

Meanwhile, the electronic device or the 5G communication relay device includes a plurality of low noise amplifiers (LNAs) 410 to 440 in the receiver. Here, the first power amplifier 210 , the second power amplifier 220 , the controller 250 , and the plurality of low-noise amplifiers 310 to 340 are all operable in the first communication system and the second communication system. In this case, the first communication system and the second communication system may be a 4G communication system and a 5G communication system, respectively.

As shown in FIG. 2 , the RFIC 250 may be configured as a 4G/5G integrated type, but is not limited thereto and may be configured as a 4G/5G separate type according to an application. When the RFIC 250 is configured as a 4G/5G integrated type, it is advantageous in terms of synchronization between 4G/5G circuits, as well as the advantage that control signaling by the modem 400 can be simplified.

Meanwhile, when the RFIC 250 is configured as a 4G/5G separate type, it may be referred to as a 4G RFIC and a 5G RFIC, respectively. In particular, when the difference between the 5G band and the 4G band is large, such as when the 5G band is configured as a millimeter wave band, the RFIC 250 may be configured as a 4G/5G separate type. As such, when the RFIC 250 is configured as a 4G/5G separate type, there is an advantage that RF characteristics can be optimized for each of the 4G band and the 5G band.

Meanwhile, even when the RFIC 250 is configured as a 4G/5G separate type, the 4G RFIC and the 5G RFIC are logically and functionally separated, and it is also possible to be physically implemented on one chip.

Meanwhile, the application processor (AP) 450 is configured to control the operation of each component of the electronic device. Specifically, the application processor (AP) 450 may control the operation of each component of the electronic device through the modem 400 .

For example, the modem 400 may be controlled through a power management IC (PMIC) for low power operation of the electronic device. Accordingly, the modem 400 may operate the power circuits of the transmitter and the receiver in the low power mode through the RFIC 250 .

In this regard, when it is determined that the electronic device is in an idle mode, the application processor (AP) 450 may control the RFIC 250 through the modem 300 as follows. For example, if the electronic device is in an idle mode, the RFIC through the modem 300 so that at least one of the first and

second power amplifiers

110 and 120 operates in the low power mode or is turned off 250 can be controlled.

According to another embodiment, when the electronic device is in a low battery mode, the application processor (AP) 450 may control the modem 300 to provide wireless communication capable of low power communication. For example, when the electronic device is connected to a plurality of entities among a 4G base station, a 5G base station, and an access point, the application processor (AP) 450 may control the modem 400 to enable wireless communication with the lowest power. Accordingly, the application processor (AP) 450 may control the modem 400 and the RFIC 250 to perform short-range communication using only the short-range communication module, even if the throughput is somewhat sacrificed.

According to another embodiment, when the remaining battery level of the electronic device is equal to or greater than a threshold, the modem 400 may be controlled to select an optimal wireless interface. For example, the application processor (AP) 450 may control the modem 400 to receive through both the 4G base station and the 5G base station according to the remaining battery level and available radio resource information. In this case, the application processor (AP) 450 may receive the remaining battery level information from the PMIC and the available radio resource information from the modem 400 . Accordingly, if the battery level and available radio resources are sufficient, the application processor (AP) 450 may control the modem 400 and the RFIC 250 to receive through both the 4G base station and the 5G base station.

Meanwhile, the multi-transceiving system of FIG. 2 may integrate the transmitter and receiver of each radio system into one transceiver. Accordingly, there is an advantage that a circuit part integrating two types of system signals in the RF front-end can be removed.

In addition, since the front-end components can be controlled by the integrated transceiver, the front-end components can be more efficiently integrated than when the transmission/reception system is separated for each communication system.

In addition, when each communication system is separated, it is impossible to control other communication systems as necessary, or efficient resource allocation is impossible because the system delay is increased. On the other hand, the multi-transmission/reception system as shown in FIG. 2 has the advantage that it is possible to control other communication systems as necessary, and thus system delay can be minimized, so that efficient resource allocation is possible.

Meanwhile, the first power amplifier 210 and the second power amplifier 220 may operate in at least one of the first and second communication systems. In this regard, when the 5G communication system operates in the 4G band or the Sub6 band, the first and second power amplifiers 220 may operate in both the first and second communication systems.

On the other hand, when the 5G communication system operates in the millimeter wave (mmWave) band, one of the first and

second power amplifiers

210 and 220 operates in the 4G band, and the other operates in the millimeter wave band. have.

Meanwhile, by integrating the transceiver and the receiving unit, two different wireless communication systems can be implemented with one antenna by using an antenna for both transmitting and receiving. In this case, 4x4 MIMO can be implemented using four antennas as shown in FIG. 2 . In this case, 4x4 DL MIMO may be performed through the downlink (DL).

Meanwhile, if the 5G band is the Sub6 band, the first to fourth antennas ANT1 to ANT4 may be configured to operate in both the 4G band and the 5G band. On the other hand, if the 5G band is a millimeter wave (mmWave) band, the first to fourth antennas ANT1 to ANT4 may be configured to operate in any one of the 4G band and the 5G band. In this case, if the 5G band is a millimeter wave (mmWave) band, each of a plurality of separate antennas may be configured as an array antenna in the millimeter wave band.

Meanwhile, 2x2 MIMO implementation is possible using two antennas connected to the first power amplifier 210 and the second power amplifier 220 among the four antennas. In this case, 2x2 UL MIMO (2 Tx) may be performed through the uplink (UL). Alternatively, it is not limited to 2x2 UL MIMO, and may be implemented with 1 Tx or 4 Tx. In this case, when the 5G communication system is implemented with 1 Tx, only one of the first and

second power amplifiers

210 and 220 needs to operate in the 5G band. On the other hand, when the 5G communication system is implemented as 4Tx, an additional power amplifier operating in the 5G band may be further provided. Alternatively, a transmission signal may be branched in each of one or two transmission paths, and the branched transmission signal may be connected to a plurality of antennas.

On the other hand, since a switch-type splitter or a power divider is built inside the RFIC corresponding to the RFIC 250, there is no need for a separate component to be disposed outside, thereby improving component mountability. can Specifically, by using a single pole double throw (SPDT) type switch inside the RFIC corresponding to the controller 250 , it is possible to select the transmitter (TX) of two different communication systems.

In addition, the electronic device operable in a plurality of wireless communication systems according to the present invention may further include a phase controller 230 , a duplexer 231 , a filter 232 , and a switch 233 .

In a frequency band such as a mmWave band, an electronic device needs to use a directional beam to secure coverage for communication with a base station. To this end, each of the antennas ANT1 to ANT4 needs to be implemented as array antennas ANT1 to ANT4 composed of a plurality of antenna elements. The phase controller 230 is configurable to control a phase of a signal applied to each antenna element of each of the array antennas ANT1 to ANT4. In this regard, the phase controller 230 may control both the magnitude and phase of a signal applied to each antenna element of each of the array antennas ANT1 to ANT4. Accordingly, since the phase control unit 230 controls both the magnitude and the phase of the signal, it may be referred to as a power and phase control unit 230 .

Therefore, by controlling the phase of a signal applied to each antenna element of each of the array antennas ANT1 to ANT4, beam-forming can be independently performed through each of the array antennas ANT1 to ANT4. have. In this regard, multiple input/output (MIMO) may be performed through each of the array antennas ANT1 to ANT4. In this case, the phase controller 230 may control the phase of a signal applied to each antenna element so that each of the array antennas ANT1 to ANT4 forms beams in different directions.

The duplexer 231 is configured to mutually separate signals of a transmission band and a reception band. At this time, the signals of the transmission band transmitted through the first and

second power amplifiers

210 and 220 are applied to the antennas ANT1 and ANT4 through the first output port of the duplexer 231 . On the other hand, signals of the reception band received through the antennas ANT1 and ANT4 are received by the

low noise amplifiers

310 and 340 through the second output port of the duplexer 231 .

The filter 232 may be configured to pass a signal of a transmission band or a reception band and block a signal of the remaining band. In this case, the filter 232 may include a transmit filter connected to a first output port of the duplexer 231 and a receive filter connected to a second output port of the duplexer 231 . Alternatively, the filter 232 may be configured to pass only a signal of a transmission band or only a signal of a reception band according to the control signal.

The switch 233 is configured to transmit either only a transmit signal or a receive signal. In an embodiment of the present invention, the switch 233 may be configured in a single pole double throw (SPDT) type to separate a transmission signal and a reception signal using a time division multiplexing (TDD) method. In this case, the transmission signal and the reception signal are signals of the same frequency band, and accordingly, the duplexer 231 may be implemented in the form of a circulator.

On the other hand, in another embodiment of the present invention, the switch 233 is also applicable to a frequency division multiplexing (FDD: Time Division Duplex) scheme. In this case, the switch 233 may be configured in a double pole double throw (DPDT) type to connect or block a transmission signal and a reception signal, respectively. Meanwhile, since the transmission signal and the reception signal can be separated by the duplexer 231 , the switch 233 is not necessarily required.

Meanwhile, the electronic device according to the present invention may further include a modem 400 corresponding to a control unit. In this case, the RFIC 250 and the modem 400 may be referred to as a first controller (or first processor) and a second controller (second processor), respectively. Meanwhile, the RFIC 250 and the modem 400 may be implemented as physically separate circuits. Alternatively, the RFIC 250 and the modem 400 may be physically or logically divided into one circuit.

The modem 400 may control and process signals for transmission and reception of signals through different communication systems through the RFIC 250 . The modem 400 may be obtained through control information received from the 4G base station and/or the 5G base station. Here, the control information may be received through a physical downlink control channel (PDCCH), but is not limited thereto.

The modem 400 may control the RFIC 250 to transmit and/or receive signals through the first communication system and/or the second communication system in a specific time and frequency resource. Accordingly, the RFIC 250 may control transmission circuits including the first and

second power amplifiers

210 and 220 to transmit a 4G signal or a 5G signal in a specific time period. In addition, the RFIC 250 may control receiving circuits including the first to fourth low-noise amplifiers 310 to 340 to receive a 4G signal or a 5G signal in a specific time period.

Meanwhile, a 5G communication relay device that transmits a 5G wireless signal to an electronic device equipped with a multi-transmission/reception system as shown in FIG. 2 , that is, 5G Customer Premises Equipment (CPE) and a control method thereof will be described.

In this regard, since the speed of the existing broadband network is low and a huge cost is incurred to install a new giga network, 5G CPE is required. In addition, even if new subscribers are created, it may incur a lot of cost for laying cables and having engineers visit and install them because the distance between each household is long. In order to solve this problem, it is desirable that 5G communication service be provided through 5G CPE indoors.

Network operators who want to create new businesses after 4G LTE are competing to build 5G networks. However, it is difficult to create a new business only with the advantage that the 5G network is faster than the 4G network.

Accordingly, operators may consider a method of wirelessly supplying the Internet to each home using a high-speed communication network, instead of providing Internet service through an existing cable.

However, compared to the frequencies used in LTE or 3G, 5G uses a very high frequency band as a high-speed communication network. Therefore, the 5G wireless signal causes a large RF loss due to surrounding objects such as buildings and trees.

Operators may want to offer 5G CPE, and users do self-install so that engineers do not have to visit or lay cables separately. However, there is a problem in that it is difficult to determine the optimal installation angle and location of 5G CPE for installation due to the characteristics of 5G NR radio.

Accordingly, the 5G communication relay device according to the present invention, that is, the 5G CPE, may implement the following technical features to solve the above-described problems.

1) A CPE for indoor use is proposed using an antenna that supports a high power class, that is, Power class 1 (eg 48dBm).

2) Extend 5G service coverage of 5G CPE by using directional antenna and beamforming method.

3) In the case of using a directional antenna, a method is applied to cover the issue that an angular region providing 5G service is limited.

4) When using a high frequency, apply safety measures to prevent harmful effects on the human body.

A detailed method for implementing the technical features of the 5G communication relay device according to the present invention, that is, 5G CPE, is as follows.

1) Since the 5G wireless signal with high frequency characteristics has strong linearity, it is difficult to search the area where the signal is captured indoors. Therefore, proper positioning for 5G CPE is required to receive and acquire signals indoors.

2) Due to the short wavelength according to the high frequency characteristics, the signal arrival distance is short, so the 5G reception performance can be satisfied only when beamforming is performed in the direction of the base station, that is, the optimal signal direction. Therefore, a tilting operation is required to search for an optimal signal direction between the 5G CPE and the base station.

In this regard, FIG. 3 is a conceptual diagram of a method for installing a 5G communication relay device, that is, a 5G CPE according to the present invention. Meanwhile, FIGS. 4A and 4B are flowcharts of a control operation performed in a 5G communication relay device, ie, a 5G CPE, according to the present invention.

Referring to FIG. 3A , a 5G New Radio (NR) signal strength may be measured. In this regard, referring to FIG. 4A , a test mode may be performed ( S110 ) while performing 5G NR measurement. Meanwhile, as the test mode is performed (S110), a TX disable procedure may be performed (S120). In this regard, the test mode is performed (S110), and while the TX Disable procedure is performed (S120), the 5G NR base station is not yet connected. Accordingly, as shown in FIG. 4A , 'No NR Connection' may be displayed through the electronic device corresponding to the test tool. Here, No NR Connection means not a radio resource control (RRC) connection state.

On the other hand, this test mode is mainly performed during the initial installation of 5G CPE. However, the present invention is not limited thereto, and may be performed when a user is notified of this according to a change in a radio wave environment and the user selects a test mode. While the TX Disable procedure is performed (S120), the 5G CPE does not perform any signal transmission procedure to the base station or the surrounding electronic device. However, the control signal transmission may be exceptionally performed for the NR measurement report according to the 5G NR signal measurement.

If the 5G NR signal strength does not exceed a certain level, the 5G CPE may be moved to another location in the room as shown in FIG. 3(b). As described above, when the 5G NR signal strength at another location in the room is above a certain level, NR connection is performed. In this regard, referring to FIG. 4A , NR measurement according to 5G NR signal measurement may be performed (S130) even while the TX disable procedure is performed (S120). In this regard, as the NR measurement is performed ( S130 ), an NR connection may be made. Therefore, as shown in FIG. 4A , 'NR Connection' can be displayed through the electronic device corresponding to the test tool. Here, NR Connection means a radio resource control (RRC) connection state.

When the NR connection is made, appropriate altitude detection may be performed through a tilting operation as shown in FIG. 3( c ). In addition to the mechanical tilting operation, such a tilting operation may also be an electrical tilting operation through beam forming for fine angle or height adjustment.

Referring to FIG. 3C , the 5G CPE may be rotated by a predetermined angle in the horizontal direction ( S141 ). For example, the 5G CPE can be rotated within an azimuth angle of ±30 degrees in the horizontal direction. However, the azimuth rotation angle is not limited thereto and may be any rotation angle depending on the application.

Also, referring to FIG. 3C , the 5G CPE may be rotated by a predetermined angle in the vertical direction ( S142 ). For example, the 5G CPE can be rotated within an elevation angle of ±30 degrees in the vertical direction. However, the elevation angle rotation angle is not limited thereto, and may be any rotation angle depending on the application, and may be a value different from the azimuth rotation angle. In addition, instead of rotating the 5G CPE by a certain angle in the vertical direction, the height of the installation mechanism in which the 5G CPE is installed can be adjusted. Therefore, the 5G CPE can be disposed in the optimal signal reception direction in the horizontal and vertical directions. Accordingly, the 5G CPE may turn off the test mode, transmit the signal received from the base station to the electronic device, and transmit the signal received from the electronic device to the base station.

Therefore, the 5G CPE control operation according to the present invention may be performed in two steps as follows.

Step 1: Apply Tx disable algorithm to ensure user or installer safety during installation

Step 2: Apply an algorithm to quickly detect which direction is the optimal tilt direction during installation

In this regard, the Tx disable algorithm is applied while the test mode is performed (S110) and the TX disable procedure is performed (S120). Meanwhile, even when the NR connection is established, the Tx disable algorithm may be performed until the test mode is terminated. On the other hand, the application of an algorithm to quickly detect which direction is the optimal tilt direction during installation is performed through a horizontal rotation step (S141) and a vertical rotation step (S142).

Meanwhile, FIG. 5A is a flowchart illustrating an internal configuration of a 5G CPE according to the present invention and a 5G CPE control operation with an electronic device. In addition, Figure 5b shows the detailed configuration of the 5G CPE and the electronic device according to the present invention.

Referring to FIG. 5A , the test tool is an electronic device that performs 5G communication with a base station through a 5G CPE. Meanwhile, BT is a wireless interface for performing short-range communication between the 5G CPE and the electronic device, and may be, for example, Bluetooth. However, it is not limited to Bluetooth and may be any short-range communication wireless interface such as Wi-Fi or Zigbee. Meanwhile, RF/Protocol corresponds to a transceiver of the 5G CPE, and a control operation may be performed by a controller (processor) of the 5G CPE. In addition, the LED is provided in the 5G CPE, and may indicate the installation status of the 5G CPE and the 5G signal quality.

Meanwhile, referring to FIG. 5B , the 5G CPE 500 includes a controller (processor) 510 , a transceiver 520 , a second transceiver 530 , and a display unit 540 . Meanwhile, the electronic device 100 includes a transceiver 110 , an output unit 150 , and a control unit 180 corresponding to a wireless communication unit.

In addition, the 5G communication system according to the present invention is configurable to include a 4G base station 600 and a 5G base station 700 . In this regard, the 5G CPE 500 may receive a 5G radio signal from the 5G base station 700 and relay it to the electronic device 100 . Also, the 5G CPE 500 may receive a 5G radio signal from the electronic device 100 and transmit it to the 5G base station 700 . In this regard, in the 5G non-stand-alone (NSA) structure, the 5G CPE 500 may maintain a dual connectivity state (EN-DC) with the 4G base station 600 and the 5G base station 700 . In addition, in the 5G NSA structure, the 5G CPE 500 may transmit some control information to both the 4G base station 600 and the 5G base station 700 .

Referring to FIG. 1 , the transceiver 110 corresponding to the wireless communication unit includes a 5G wireless communication module and a short-range communication module. Here, the 5G wireless communication module and the short-range communication module correspond to the transceiver 110 and the second transceiver, respectively.

With respect to the electronic device that is a 5G UE, the transceiver 110 is configured to transmit and receive a radio signal. Meanwhile, the controller 180 is connected to the transceiver 110 and is configured to transmit and receive 5G radio signals to and from the base station through the 5G communication relay device 500 . In this regard, when the 5G communication relay device 500 operates in a test mode and cell search is initiated, the 5G radio signal is not transmitted through the transceiver 110 . To this end, when the 5G communication relay device 500 performs a TX disable process, the controller 180 transmits user data and control data to the 5G communication relay device 500 so as not to transmit the user data and control data to the transceiver unit ( 110) can be controlled.

Meanwhile, when cell search is initiated, the 5G base station 700 does not allocate time and frequency resources for transmitting user data and control data to the electronic device 100 and the 5G CPE 500 . However, the 5G base station 700 sends a first radio resource to the

electronic device

100 and 5G to transmit control data for NR measurement and NR measurement report in the RRC-connected state. It can be assigned to the CPE (500). On the other hand, the 5G base station 700 may allocate the second radio resource to the electronic device 100 and the 5G CPE 500 to transmit user data when the PDN (Packet Data Network) attach is completed. .

Accordingly, when the 5G communication relay device 500 performs a TX disable process, the controller 180 may transmit Tx restriction signaling to the 5G communication relay device 500 . . In this regard, when the 5G communication relay device 500 performs a TX disable process, the control unit 180 transmits a transmission restriction signaling for restricting transmission of user data and control data to the transceiver 110 ) can be controlled to transmit to the 5G communication relay device 500 . Here, the transmission restriction signaling may be transmitted to the 5G communication relay device 500 through a second air interface different from the 5G air interface. Specifically, the second wireless interface may be the aforementioned short-range wireless communication interface, for example, a Bluetooth or Wi-Fi interface.

Specifically, even when the first radio resource for control data transmission is allocated, the controller 180 may transmit the transmission restriction signaling to the 5G communication relay device 500 so as not to transmit the control data. Here, the transmission restriction signaling is a message for restricting transmission of control data until RRC connection and measurement report.

Also, even when the second radio resource for user data transmission is allocated, the controller 180 may transmit the second transmission restriction signaling to the 5G communication relay device 500 so as not to transmit user data. Here, the second transmission restriction signaling is a message for restricting transmission of control data until the end of the test mode.

Meanwhile, referring to FIG. 5B , the 5G communication system according to the present invention is configurable to include a 4G base station 600 and a 5G base station 700 . In this regard, the 5G CPE 500 may receive a 5G radio signal from the 5G base station 700 and relay it to the electronic device 100 . Also, the 5G CPE 500 may receive a 5G radio signal from the electronic device 100 and transmit it to the 5G base station 700 . In this regard, in the 5G non-stand-alone (NSA) structure, the 5G CPE 500 may maintain a dual connectivity state (EN-DC) with the 4G base station 600 and the 5G base station 700 . In addition, in the 5G NSA structure, the 5G CPE 500 may transmit some control information to both the 4G base station 600 and the 5G base station 700 .

electronic device

With respect to 5G CPE, the transceiver 520 is configured to transmit and receive a radio signal. Specifically, the transceiver 520 is configured to transmit and receive a 5G NR signal, and may transmit and receive a 4G LTE signal. In this regard, the 5G wireless communication module for transmitting and receiving the 5G NR signal and the 4G wireless communication module for transmitting and receiving the 4G LTE signal may be implemented in one physical chip or in a separate chip.

The second transceiver 530 is configured to perform short-range communication with the electronic device 100 . Specifically, the second transceiver 530 may perform short-distance communication with the paired electronic device 100 by performing a pairing process for short-distance communication with the neighboring electronic device 100 .

The controller (processor) 510 is connected to the transceiver 520 and is configured to provide a wireless signal received from the base station to the electronic device 100 . According to the present invention, the controller (processor) 510 can control the radio signal not to be transmitted through the transceiver 520 when a cell search is initiated in the test mode. have.

The display unit 540 may be configured to display the 5G NR signal quality and status received from the base station. In addition, the display unit 540 may display information guiding a user or an installer who installs the 5G CPE to arrange the 5G CPE at an optimal position and angle.

On the other hand, the 5G base station 700 is a 5G communication relay device, that is, when the 5G CEP 500 operates in a test mode and cell search is initiated, the 5G CEP 500 is the user It is possible to control not to transmit a signal, including data and control data.

To this end, when cell search is initiated, the 5G base station 700 does not allocate time and frequency resources for transmitting user data and control data to the electronic device 100 and the 5G CPE 500 . However, the 5G base station 700 sends a first radio resource to the

electronic device

1 and 3 to 5B , the 5G CPE control operation according to the present invention may be performed in two steps as follows.

Therefore, since the 5G CPE according to the present invention uses a 5G signal of a high frequency band, a safety method is applied to prevent harmful effects to the human body during installation. Specifically, the 5G CPE control operation according to the present invention is to disable the Tx function during positioning, rotation and tilting operations of the 5G CPE.

1 and 5A , the test tool corresponds to the electronic device 100 . Meanwhile, RF/Protocol may correspond to the transceiver or control unit of the 5G CPE. For convenience of description, RF/Protocol is referred to as corresponding to the control unit 510 of the 5G CPE. Meanwhile, BT is referred to as the second transceiver 530 of the 5G CPE that provides a second air interface for performing short-range communication with the electronic device 100 . In addition, the LED indicates the installation state of the 5G CPE and the 5G signal quality as a display unit 540 .

The controller 510 of the 5G CPE may control the LTE base station to be in an LTE connection state through activation of a communication function. In the LTE connection state, NR measurement may be performed on a received signal received from an NR base station. In this regard, the NR measurement may be performed even during the 5G NR Disable process (S120). Also, the NR measurement may be performed during the optimal tilt control process ( S140 ).

Meanwhile, when a user input for installing 5G CPE is received (eg, Button On), the controller 510 of the 5G CPE may perform a test mode ( S110 ). Also, when the control unit 510 enters the test mode (ie, the test mode is determined), the controller 510 may control the pairing with the electronic device 100 through the second transceiver 530 . For pairing with the electronic device 100 in the test mode, the surrounding electronic device may be recognized through an advertising process with the surrounding electronic device.

In relation to the 5G NR Disable process (S120), the controller 510 disables TX so that a radio signal is not transmitted through the transceiver 520 when a specific control signal is received from the 5G base station or is in an RRC connection state. carry out the process.

In relation to the optimal tilt control process ( S140 ), the controller 510 may search for an optimal direction of a signal received from a 5G base station in a horizontal direction and/or a vertical direction. Accordingly, the controller 510 may perform one of a TX Enable procedure ( S150 ), a tilting procedure, and a reinstallation procedure based on the received signal quality from the 5G base station. Accordingly, when the received signal quality is good, the control unit 510 may display through the display unit 540 that the 5G CPE can be installed at the corresponding location. That is, the controller 510 may transmit information related to whether the 5G CPE can be installed at the corresponding location or the NR status to the display unit 540 . Accordingly, the display unit 540 may display the NR status in Red, Yellow, Green, or the like, respectively. For example, if the LED is displayed as Green, it indicates that the 5G signal strength is in a good state, and that the 5G CPE can be installed normally at that location. On the other hand, if the LED is displayed in Yellow, it indicates that the 5G signal strength is a normal state, and installation is impossible unless the 5G CPE is optimally tilted in the horizontal and/or vertical direction. On the other hand, when the LED is displayed in Red, the 5G signal strength is in a weak state, indicating that installation is impossible unless the 5G CPE is moved to another location.

When the TX Enable procedure (S150) is performed, the controller 510 accesses the 5G network through a ping operation to the 5G network, and ends the test mode. In this regard, when the PDN (Packet Data Network) attach is completed, the controller 510 may terminate the test mode and transmit user data. Accordingly, the 5G CPE is connected to both the 5G base station and the 5G network.

As described above, when the test mode is performed ( S110 ), the second transceiver 530 may perform a pairing operation with the electronic device 100 . When pairing is made with the electronic device 100 , the second transceiver 530 may transmit received signal quality, for example, Reference Signal Received Power (RSRP) to the electronic device 100 . Meanwhile, when the test mode is terminated, information transfer between the electronic device 100 and the 5G CPE may be terminated.

Meanwhile, FIG. 5C shows a detailed configuration of a 5G CPE that transmits a 5G radio signal between a 5G base station and a UE according to an embodiment. Referring to FIG. 5C , the 5G CPE 500 includes a receive array antenna (RX ANT), a transmit array antenna (TX ANT), a controller 510 , and a transmitter/receiver 520 .

In this regard, the 5G CPE 500 may amplify and process the 5G radio signal received from the 5G base station 700 through the reception array antenna (RX ANT) through the transceiver 520 . In addition, the 5G CPE 500 may transmit the amplified and processed 5G radio signal to the first UE 100a and the second UE 100b through a transmit array antenna (TX ANT). In this case, the receiving array antenna RX ANT and the transmitting array antenna TX ANT may share an antenna element.

On the other hand, Figure 6a shows a flow chart of the positioning and tilting control method of the 5G CPE according to the present invention. 5A to 6 , the positioning and tilting control method of the 5G CPE may be performed by the controller 510 based on a signal received from the 5G base station through the transceiver. In this regard, the positioning and tilting control method of the 5G CPE may be performed in a mechanical manner or in an electrical manner.

Referring to FIG. 6 , the controller 510 may perform 5G NR measurement ( S130 ) at the corresponding location. If it is determined that attachment to the 5G network is not possible according to the 5G NR measurement (S130), the LED may be displayed in Red. If it is determined that such a situation as RRC connection failure is permanent, position control (S101) may be performed to position the 5G CPE to a location other than the corresponding location. In this regard, the 5G CPE may autonomously perform position control ( S101 ) within the movable range. Alternatively, the 5G CPE may indicate the need for position control ( S101 ) through a display unit such as an LED light or through a peripheral electronic device such as a user terminal.

On the other hand, according to the received signal quality through 5G NR measurement (S130), for example, RSRP, horizontal rotation (tilt) control (S140) and/or vertical rotation (tilt) control (S150) operations may be performed. In this regard, the horizontal rotation (tilt) control (S140) and/or the vertical rotation (tilt) control (S150) operations may correspond to left-right rotation (tilt) and/or vertical rotation (tilt), respectively.

In this regard, if the received signal quality through the 5G NR measurement (S130) is less than or equal to the threshold, the horizontal rotation (tilt) control (S141) may be performed. If the received signal quality through the horizontal rotation (tilt) control (S141) is less than or equal to the threshold, the vertical rotation (tilt) control (S142) operation may be performed. In this regard, the threshold, which is the received signal quality, may correspond to 3 levels. Here, the 3 level indicates that the 5G signal strength indicated by the green LED is a good state, and the 5G CPE can be installed normally at the corresponding position.

In this regard, the number of antennas in the horizontal direction of the array antennas in the 5G CPE may be set to be greater than the number of antennas in the vertical direction. Accordingly, the antenna beam can be precisely adjusted in the horizontal direction and the antenna beam can be adjusted again in the vertical direction. In this regard, there is an advantage that it is no longer necessary to perform the vertical rotation (tilt) control (S150) when the received signal quality is greater than or equal to the threshold through the horizontal rotation (tilt) control ( S140 ). Therefore, there is an advantage that the mechanical stability of the 5G CPE can be improved by not performing the vertical rotation (tilt) of the 5G CPE as much as possible.

Therefore, if the received signal quality at the corresponding position and angle is greater than or equal to the threshold, it is determined as a strong electric field state and the adjustment procedure such as tilt can be stopped (stop adjustment). In addition, if the received signal quality is greater than or equal to the threshold through the horizontal rotation (tilt) control ( S141 ), it is determined that the received signal is in a strong electric field state, and the tilt adjustment procedure can be stopped (stop adjustment). In addition, if the received signal quality is greater than or equal to the threshold through the vertical rotation (tilt) control (S142), it is determined as a strong electric field state, and the adjustment procedure such as tilt can be stopped (stop adjustment).

On the other hand, even through the vertical rotation (tilt) control ( S142 ), if the received signal quality is less than the threshold value, it may be determined as a weak electric field state. Accordingly, it is possible to indicate that the 5G signal strength is a normal state by displaying the LED in Yellow, and installation is impossible unless the 5G CPE is optimally tilted in the horizontal and/or vertical direction. On the other hand, depending on the 5G signal strength, the LED may be displayed in Red to indicate that the 5G signal strength is in a weak state, and that installation is impossible unless the 5G CPE is moved to another location. Specifically, when the received signal quality is less than the first threshold and greater than or equal to the second threshold (2 level), it is possible to control to perform a tilting procedure. On the other hand, if the received signal quality is less than the second threshold (1 level), it is possible to control to move the installation location to perform the reinstallation procedure.

Hereinafter, a method for predicting the optimal tilting direction when installing 5G CPE according to the present invention will be described. In this regard, Figure 6b shows various LEDs provided in the 5G CPE according to the present invention. Referring to FIG. 6B , the 5G CPE includes an LED 540 indicating the 5G NR signal strength. The LED 540 may be disposed on the upper side so that the installer can easily recognize the 5G NR signal quality, but is not limited thereto and can be changed according to the application. Accordingly, the LED 540 may display the NR status in Red, Yellow, Green, and the like, respectively. For example, if the LED 540 is displayed as Green, it indicates that the 5G signal strength is in a good state, and that the 5G CPE can be installed normally in the corresponding position. On the other hand, when the LED 540 is displayed in Yellow, it indicates that the 5G signal strength is a normal state, and installation is impossible unless the 5G CPE is optimally tilted in the horizontal and/or vertical direction. On the other hand, when the LED 540 is displayed in Red, the 5G signal strength is in a weak state, indicating that installation is impossible unless the 5G CPE is moved to another location.

The 5G CPE may further include a first LED 541 for guiding a direction to the left/right according to the left/right tilt. In addition, the 5G CPE may further include a second LED 542 for guiding the direction upward/downward according to the vertical tilt.

Meanwhile, the user or installer can select the corresponding button to enter the test mode, that is, the installation mode to install the 5G CPE. In order to enter the test mode, that is, the installation mode, the corresponding button may be physically provided in the 5G CPE or an electronic device paired with the 5G CPE or may be displayed on the display. In this regard, the 5G CPE can activate the following functions when entering the test mode, that is, the installation mode.

1) When installing 5G CPE, TX power disable, RX Only mode can be entered to protect the human body from harmful 5G NR radio waves.

2) An algorithm to find the optimal installation position and angle can be applied.

3) As an auxiliary means of installation, it is possible to control the CPE Side BT advertise mode to be ON to enable BT pairing with electronic devices.

On the other hand, when installing 5G CPE, it can measure the 5G signal and keep the 5G CPE in a stationary state to find the optimal reception angle. To this end, the LED 240 indicating the 5G NR signal strength may be displayed in a blinking state. Accordingly, the LED 240 may be displayed in a different color, for example, white Blinking, to inform the user or installer not to move the 5G CPE from that location.

Hereinafter, the 5G communication relay device according to the present invention, that is, the installation structure and installation method of the 5G CPE will be looked at. In this regard, Figure 7 shows the arrangement structure of the base station and 5G CPE according to the present invention.

Referring to FIG. 7 , it is difficult for a 5G wireless signal transmitted from a base station (BS) to be transmitted into an indoor space such as a building. Accordingly, the present invention proposes a method of installing a plurality of 5G communication relay devices, that is, 5G CPEs (CPEs 1 to 3) around a space such as a window of a building. Here, CPEs 1 to 3 correspond to 5G CPEs disposed at a higher position, substantially the same position, and lower position than the base station (BS), respectively. Accordingly, CPE 1 needs to electrically down-tilt the antenna beam in the vertical direction. On the other hand, CPE 3 needs to electrically upwardly tilt the antenna beam in the vertical direction (Up e-tilt). Meanwhile, CPE 2 needs to form an antenna beam in a bore-site direction in a vertical direction.

On the other hand, when Building 2 is spaced apart from Building 1 by a predetermined angle, for example, 60 in the horizontal direction, CPEs 1 to 3 installed in Building 2 can apply more horizontal tilt than CPEs 1 to 3 installed in Building 1. have. In this regard, the tilt in the horizontal direction applied to CPEs 1 to 3 installed in Building 2 may be determined to be AoA-60 degrees. Here, AoA is the tilt angle in the horizontal direction of CPEs 1 to 3 installed in Building 1.

In this regard, differentiation points for the installation structure and installation method of the 5G communication relay device according to the present invention, that is, 5G CPE are as follows.

1) It is necessary to match the beam direction of the antenna (operating at high frequency) with 5G straightness to the direction of the repeater (access unit) or base station (BS). To this end, it is necessary to detect a change in the structure and angle of a mechanism capable of adjusting the angle of the antenna beam direction. Therefore, a concept of calculating the angle from the 5G communication relay device, that is, the 5G CPE to the base station (BS) is required.

2) On the other hand, in the form of an indoor unit, various installation scenarios and power connection are required to fit the general home indoor environment in addition to the building. For this, a scenario in which various customers can install it at the desired location is required. Therefore, it is necessary to review the indoor installation scenario of 5G communication relay device, that is, 5G CPE.

On the other hand, due to the high frequency characteristics of 5G NR, 5G wireless signals have very high straightness. Specifically, 5G NR uses very high frequency in the 28GHz band, so its straightness is very high. Therefore, since the 5G CPE is often installed directly by the customer, it should be easy to adjust the direction to match the base station. In other words, 5G communication using a very high frequency band, especially mmWave, has very high straightness, and communication performance may deteriorate if the direction with the 5G repeater or base station does not match. Therefore, there is a need for a structure in which customers can easily control the orientation of 5G CPE.

Accordingly, the 5G CPE needs to be installed so that the orientation direction of the 5G CPE (Customer Premises Equipment) coincides with the orientation of the 5G repeater or the 5G base station. As described above, in a line of sight (LOS) environment, the direction of the 5G CPE must match the direction of the 5G repeater or 5G base station to optimize radio performance and thus communication performance such as communication speed can be optimized. In order to optimize the orientation of the 5G CPE, the present invention proposes a structure in which anyone can easily adjust the orientation of the 5G CPE in the form of a device that the customer can directly install.

Meanwhile, the rotation structure of the 5G communication relay device according to the present invention, that is, the 5G CPE, is as follows. In this regard, FIG. 8 shows a left-right rotation structure and a vertical rotation structure of the 5G communication relay device according to the present invention.

In this regard, FIG. 8 is related to a first coupling frame corresponding to the left-right rotation structure of the 5G communication relay device according to the present invention and a second coupling frame corresponding to the vertical rotation structure. Specifically, Figure 8 (a) shows a front view in which the main body of the 5G communication relay device is combined with the first combined frame and the second combined frame. On the other hand, Figure 8 (b) shows a side view in which the main body of the 5G communication relay device is combined with the first combined frame and the second combined frame. In addition, FIG. 8( c ) shows a front view of the 5G communication relay device in which the internal structure of the second combined frame of the 5G communication relay device is displayed.

Accordingly, the main body 501 is configured to be rotatable in the left and right directions and up and down directions to receive the 5G wireless signal. To this end, the first coupling frame 550 is connected to the lower end of the main body 501 and is configured to rotate the main body 501 in the left and right directions. A thread may be disposed inside the first coupling frame 550 . In this regard, according to the rotation of the screw thread, the left and right rotation (tilt) angle of the 5G CPE can be known. In addition, an input unit capable of controlling or manipulating LAN/power, for example, an input unit in the form of a button, may be disposed on the front or rear surface of the main body 501 .

On the other hand, the second coupling frame 560 is connected to the side portion and the lower end of the main body 501, is configured to rotate the main body 501 in the vertical direction. On the other hand, the lower end of the main body 501 can be configured to be fastened with a frame attached to the window. In addition, the lower end of the main body 501 can be configured to be fastened with a vertical connection part extendable to a predetermined height.

In addition, the second coupling frame 560 may be provided with a holding button configured to fix the second coupling frame 560 with the main body 501 . Therefore, the 5G communication relay device according to the present invention, that is, the configuration for controlling the vertical tilt of the 5G CPE and fixing it at a specific angle may be formed as a holding button structure.

Specifically, the second coupling frame 560 may include a holding button configured to hold the main body 501 by being fixed to the second coupling frame 560 . On the other hand, the holding button may be configured to tilt the main body 501 in the vertical direction in the region where the second coupling frame 560 and the main body 501 are connected.

Meanwhile, FIG. 9 illustrates a case before beam directions are aligned in the 5G communication relay apparatus and the device management application according to an embodiment. On the other hand, FIG. 10 shows a case in which beam directions are aligned in the 5G communication relay device and the device management application according to FIG. 9 . In this regard, FIG. 13A shows a detailed configuration of a 5G communication relay device according to an embodiment.

In this regard, in the present invention, in implementing the 5G CPE terminal using the mmWave band, the device management software UI is implemented using the transmit/receive beam direction determined by the beam searching algorithm. . In addition, we propose a smart CPE implementation method for mmWave that maximizes transmit/receive performance by automatically notifying the user of the base station beam direction through the device management software UI.

In a mobile communication terminal such as a smartphone, the beam direction of the base station and the beam of the terminal are paired and aligned using a beam search algorithm. In this case, a technique for automatically performing beam tracking when the terminal moves is very important. However, it is more important to install a terminal supporting a fixed wireless service, such as a CPE terminal, in a direction in which a base station signal is strong rather than such a beam tracking function.

However, it may be very inefficient for a user or an installer to install the CPE terminal by simply finding a point where the BRSRP value indicating the strength of the received radio wave is high as in the prior art.

In the present invention, since the beam direction of the terminal selected by the beam search algorithm is the point at which the base station received signal is the maximum, not the beam tracking, but the CPE terminal is moved to the corresponding beam direction. To this end, it is intended to direct the CPE terminal in the corresponding direction so that a reference beam having the highest beam gain among the beams of the terminal becomes a boresight beam. Therefore, the present invention can be utilized for the purpose of automatically calculating the movement angle of the CPE terminal in the optimal beam direction corresponding to the reference beam.

The CPE terminal movement angle can be known in advance through the beam verification process of the current beam angle and the relative angle between the boresight beam. Therefore, the relative angle can be calculated in device management software. In addition, it is possible to automatically inform the user in real time in which direction the terminal is moved through the corresponding UI in which the strength of the received signal is maximized. Therefore, the present invention is considered to be a very important function in the future 5G CPE terminal installation.

In this regard, since the mmWave signal has strong linearity, the signal strength may vary depending on where the CPE terminal is installed indoors. Therefore, when installing the CPE, you should find a place with a strong signal and install it. However, it is not easy for an installer to find an appropriate place for such a place by using a measuring instrument such as a spectrum analyzer.

Therefore, it is expected that the terminal's automatic beam searching function will be supported even in the mmWave CPE in which the installation location is fixed in the future. In addition, since a general user can arbitrarily select a location and install it without the need for an expert's support, there is no big problem even if a situation occurs such as before the installation location of the terminal.

In addition, since the characteristic of the mmWave signal has strong linearity, it is necessary to pair the beam direction of the CPE terminal with the beam direction transmitted from the base station. In this regard, if only the beam searching algorithm applied to the modem of the CPE terminal is applied, the beam direction of the selected terminal will be one of several candidate beams provided by the terminal.

In this regard, the beam direction of the terminal selected by the CPE terminal may not be the beam candidate having the highest received or transmitted signal strength. In addition, even if the user of the CPE terminal moves the terminal directly by hand, it is very cumbersome for the user to find it while referring to the BRSRP signal strength to find out which direction is the beam direction with the greatest transmit/receive signal strength . Therefore, this method wastes a lot of time, and there is a problem in that this operation must be repeated when the terminal is moved.

Therefore, it is necessary to provide a function of automatically finding a CPE installation point capable of maximizing the received signal strength of the terminal through the CPE terminal without the need for additional equipment. This method of searching for CPE installation points is a great strength in terms of operator network construction and user convenience. A measuring instrument such as a spectrum analyzer is installed by a person after diagnosing various directions, finding a suitable place. However, in the case of the 5G CPE terminal according to the present invention, it is possible to automatically inform the movement direction optimized for the base station beam direction. Therefore, in the future, I think that it can be a function that can be actively used to build a network of operators.

In this regard, referring to FIGS. 8 to 10 and 13A , the 5G communication relay device, that is, the 5G CPE 1000 may be configured to include a main body 501 and a controller 1400 . Here, the controller 1400 may be a baseband processor, or may be a processor such as an application processor (AP) implemented separately.

The main body 501 is configured to be rotatable in the left and right directions and up and down directions to receive the 5G wireless signal. Meanwhile, when the power button on the communication relay apparatus 1000 is turned on, the controller 1400 may control to display a specific beam direction through the device management application. In this regard, the controller 1400 may control the device management application 2000 to display the boresight beam direction and signal strength as the main body moves according to a specific beam direction. In this case, the device management application 2000 may be a program installed in another electronic device, for example, a mobile terminal, a tablet, a laptop, or a PC.

According to an embodiment, the controller 1400 may transmit the beam ID (BID) of the current beam and the reception quality (BRSRP) of the current beam to the device management application 2000 . Accordingly, when the optimal beam is selected, the device management application 2000 may transmit direction information on the optimal beam direction to the controller 1400 .

Meanwhile, when the power button is turned on, the controller 1400 may receive beam verification information and beam direction information for beam detection. Also, the controller 1400 may select an optimal beam by performing a beam selection process based on the beam direction information and the current direction information of the main body 501 .

As described above, with reference to FIGS. 9 and 10 , the present invention may be composed of a beam reference display unit of a terminal in 5G CPE and an angle display unit of a device management software UI.

5G CPE 단말(1000)의 Beam Reference 표시부 Beam Reference display unit of 5G CPE terminal (1000)

The boresight direction may be displayed based on the array antenna module 1100 of the terminal. If necessary, for user convenience, left/right or up/down angular coordinates can be displayed based on the boresight direction. In this regard, the boresight beam and each beam direction are determined for beams used through beam verification for the modem of the CPE terminal in advance.

Device manager 소프트웨어 UI의 빔 각도 표시부 Beam angle display in Device manager software UI

The horizontal axis angle, vertical axis angle, and signal strength at which the user should move the CPE terminal are displayed in real time on the device manager software on the screen of a smartphone or laptop PC. If the CPE terminal also has a display area, it may be displayed on the corresponding display. A method for a user to move a CPE terminal using the corresponding software UI is as follows.

In relation to the above-described operation, FIG. 11A illustrates an operation performed in the 5G CPE and the device management application and an information exchange process therebetween when installing or changing the installation of the 5G CPE according to an embodiment. Meanwhile, FIG. 11B shows a procedure performed in advance for beam verification and beam detection before installing the 5G CPE, and a procedure for exchanging information with a device management application thereafter.

11A and 11B, in the flow of manufacturing and verifying the 5G CPE, a terminal (CPE) manufacturing process (S210), a beam characterization process (S220), a beam verification process (S230) This can be done. Accordingly, the beam verification information may be stored in the 5G CPE in the form of a codebook. In addition, beam detection information, for example, beam direction information for beam detection, may be transmitted to the device management application through the process of generating a lookup table for beam detection ( S240 ). In this regard, beam detection information and beam direction information for beam detection are stored in the 5G CPE, and when the power button is turned on, the corresponding information may be received from the memory to the controller 1400 .

In this regard, in the terminal (CPE) manufacturing process ( S210 ), the array antenna module may be disposed in consideration of the terminal mechanism, the dissimilar part arrangement, and the like. A beam coverage simulation related to beamforming through the array antenna module arranged in this way may be performed. Meanwhile, in the beam characterization process ( S220 ), a plurality of beams satisfying specific requirements may be generated in the beam forming process through the array antenna module. In this regard, it is possible to generate a plurality of beams satisfying the 3GPP EIRP CDF requirements.

Meanwhile, in the beam verification process ( S230 ), a beam verification result for each beam is performed, and the result can be used. In this regard, with respect to a plurality of generated beams, each beam characteristic may be verified. For example, a center angle, or a side lobe level, may be specified for each of a plurality of generated beams. In this regard, for each of the plurality of generated beams, a center angle or a side lobe level may be designated for each corresponding frequency band. Also, in the lookup table generation process ( S240 ), a lookup table may be generated by calculating a relative beam angle with respect to the boresight beam.

Meanwhile, FIG. 12A shows a plurality of antenna beams in relation to a beam verification process according to an embodiment. 12B shows a lookup table generated according to a beam verification process for a plurality of antenna beams of FIG. 12A.

9, 10, 12A, and 13A , the 5G CPE 1000 may include an array antenna 1100 configured to perform a beam selection process through a plurality of antenna beams. Here, the array antenna 1100 may include a plurality of monopole and dipole elements spaced apart from each other at a predetermined interval in one direction. As signals having different phases are applied to each element of the array antenna 1100 , right beams 2 to 4 and left beams 5 to 7 may be generated from the boresight beam 1 .

As shown in FIG. 12A , the beam verification result may be utilized in the 4x1 dipole array structure constituting the array antenna. Referring to FIG. 12A , the plurality of antenna beam patterns is a simulation result, and the actual antenna beam pattern may be more distorted in the shape of the antenna beam due to the influence of the mechanical structure of the CPE and the deformed parts. Therefore, in order to generate a lookup table, it is necessary to first designate an angle with respect to the center point of each beam through the beam verification result.

9, 10, 12B, and 13A , information on a beam ID, an array module number, beam direction information, a beam angle, and a terminal movement angle for each frequency band may be displayed in the form of a lookup table. Here, when the array module numbers are different, they mean different array antennas, and multiple input/output (MIMO) may be performed through different array antennas. 12A, as signals having different phases are applied to each element of the array antenna 1100, right beams 2 to 4 and left beams 5 to 7 in the boresight beam 1 can be created. Accordingly, a beam ID can be assigned in consideration of the boresight beam 1, the right beams 2 to 4, and the left beams 5 to 7 and detailed beam positions.

Meanwhile, the beam angle expressed as a relative angle to the boresight beam may be configured to increase by a predetermined angle according to the beam ID. However, the difference in the beam angle for each beam ID may be slightly different depending on the hardware and instrument configuration and the antenna beam characteristics. As an example, relative beam angles according to beam ID = 1, 2, 3, 4 may be 0 degrees, 15 degrees, 30 degrees, and 48 degrees. That is, when the beam ID = 3 to 4 is changed, the beam angle difference may be slightly different from 18 degrees and 15 degrees. Accordingly, the movement angle of the 5G CPE may also be changed in consideration of the relative beam angle difference.

Referring to the beam verification results shown in FIGS. 12A and 12B , it can be seen that the gain difference between beams occurs at the peak point of the beam by about 3dB compared to the bore sight beam No. 1 at most. As an example, when an 8x8 patch array antenna structure is applied in 5G CPE, the gain difference between beams is expected to be larger. When such a two-dimensional array antenna structure is applied, an up/down direction may be added to the beam direction as shown in FIG. 12B in addition to the left/right direction.

Meanwhile, the 5G CPE terminal may perform a CPE power-on process (S510), a beam search process (S520), and a beam selection process (S530). The beam-related information selected in the beam selection process ( S530 ), that is, the selected beam ID and beam quality information (eg, BRSRP) may be transmitted to the device management application.

In this regard, when the power button is in an ON state, the controller 1400 may transmit ID information for the 5G communication relay device. Accordingly, the device management application may transmit beam verification information and beam direction information corresponding to the ID information to the controller 1400 . Meanwhile, the 5G CPE may further include a memory configured to store information related to beam verification information and beam direction information.

In this regard, when the power button is turned on, the controller 1400 obtains information related to beam verification information and beam direction information from the memory, and performs a beam selection process (S530) using the information. have.

On the other hand, the 5G CPE can perform the beam selection process only when the beam verification information and the beam direction information received from the device management application through the communication ID information match with the information it owns. Accordingly, the installation accuracy of 5G CPE can be improved by performing the beam selection process only when the information on the beam characteristics and verification is consistent in consideration of different antenna specifications and other component specifications for each device.

In this regard, when the ID information for the communication relay device is transmitted, the controller 1400 may receive the first beam verification information and the first beam direction information corresponding to the ID information from the device management application. Also, when the received first beam verification information and the first beam direction information match the second beam verification information and the second beam direction information obtained from the memory, the controller 1400 may perform the beam selection process.

Meanwhile, the controller 1400 may perform a beam search process around an area predicted to be an optimal beam direction based on the beam verification information and the beam direction information. Accordingly, the beam search time may be reduced through beam search for a partial area predicted in the optimal beam direction, rather than for the entire area. Accordingly, the beam search process may be performed using the beam ID of the region predicted in the direction of the optimal beam in the beam search process ( S520 ).

Accordingly, the device management application may calculate the CPE movement angle using the beam ID and beam quality information (S310). In addition, the device management application may display the movement angle of the CPE for moving in the selected beam direction (S320). In this regard, direction information for movement of the 5G CPE may be transmitted to the 5G CPE.

Accordingly, the 5G CPE may control the main body 501 to move (rotate) in a horizontal direction and/or a vertical direction based on the current direction information and the transmitted direction information for the optimal beam direction. That is, the controller 1400 may select an optimal beam and receive an input related to the movement of the main body 501 in the device management application. Accordingly, the controller 1400 may move the main body 501 in the optimal beam direction. Here, the control unit 1400 may be a separate driving control unit.

Meanwhile, the 5G CPE may perform a beam change process ( S550 ) for an adjacent area while moving in the optimal beam direction. That is, it is possible to verify the optimal beam direction by comparing the reception quality in the optimal beam direction and a direction adjacent thereto. In this regard, the controller 1400 may acquire reception quality by changing the current beam to a beam adjacent to the optimal beam. Accordingly, the 5G CPE may deliver the finally selected beam ID and beam quality information to the device management application.

Accordingly, the device management application may calculate the movement angle of the 5G CPE according to the received beam ID and beam quality information (S330). On the other hand, the device management application compares the current direction of the 5G CPE with the direction according to the calculated angle and confirms the boresight angle of the 5G CPE (S340). That is, the device management application determines whether the 5G CPE is oriented to the boresight angle because the direction and the current direction according to the calculated movement angle are within the threshold.

In this regard, if it is determined that the 5G CPE is not oriented to the boresight angle, the device management application may transmit the direction information back to the 5G CPE. Accordingly, the 5G CPE may move the main body 501 to the final position according to the received direction information to fix the position. Meanwhile, in relation to the above-described final direction selection, this may be determined in conjunction with a device management application or may be determined solely by the 5G CPE. On the other hand, even when the 5G CPE independently determines the reception quality according to the beam search, the device management application may display it on the display.

In this regard, the controller 1400 may determine a final position at which the main body is to be fixed by comparing the optimal beam direction with the signal strength of the changed adjacent beam.

As described above, the beam search/selection process by the CPE terminal, and thus the beam position display and CPE direction change process may be performed according to the processes of Step 1 to Step 4 as follows.

Step1. It indicates how far the beam direction of the current terminal selected by the beam search algorithm of the terminal modem should be moved in the left/right direction or up/down direction based on the boresight beam direction. At this time, the BRSP value, which is the received signal strength, is also displayed. The displayed absolute angle of the terminal night may be displayed using a look-up table that displays the beam ID and angle of each terminal generated in the beam verification process, or using a geomagnetic sensor. Depending on the shape of the beam pattern of the array antenna of the CPE terminal, it may be configured only in the left/right direction or the up/down axis direction.

Step2. In the case of the left/right direction, it can indicate how many degrees to the left or right to move. In addition, in the case of the up/down direction, it may indicate how many degrees to move upward or downward. If the user moves the CPE terminal and the corresponding angle is displayed as an angle of 0 degrees, it means that the boresight beam of the terminal is selected. The user can check this by changing the BRSRP value, which is the received signal strength. In this regard, even in the area corresponding to the boresight beam, slightly better reception performance can be obtained by fine tuning the terminal.

Step3. For the convenience of the user, like the hemispherical UI of FIG. 10 , the position of the currently selected beam is displayed based on 0 degree of boresight, and when the terminal is moved, the movement of the corresponding beam can be visually displayed and shown.

Step4. As above, if the moving angle of the terminal is displayed on the software UI, the user can directly view the UI screen and adjust it. In addition, if the terminal is set to operate automatically mechanically, clicking the ICON called 'Move' causes the terminal to automatically move to the corresponding angle.

In the above, the 5G CPE installation method through beam selection according to the present invention has been described. In this regard, the operating principle of the present invention and claims to be claimed through the present disclosure are as follows.

mmWave beamforming 송신/수신 원리 mmWave beamforming transmit/receive principle

- In the case of the beam searching algorithm automatically applied to the terminal modem, data transmission/reception is performed by finding the beam direction transmitted from the base station in which the terminal's BRSRP signal is maximum at the current location and applying the terminal's beam.

Terminal Array Antenna Beam Gain Characteristics: In the case of the terminal's array antenna module, the beam direction generated from the array antenna array direction to the bore sight direction among several candidate beams used has the highest beam gain. On the other hand, beams generated to the left/right with respect to the boresight direction have a characteristic that the signal gain gradually decreases.

Beam searching algorithm: In the case of the beam searching algorithm implemented in the CPE modem, the beam of the terminal aligned to the beam direction of the base station is found, and the optimal beam is selected and paired. That is, the reception BRSRP selects the largest terminal beam. At this time, from the viewpoint of the terminal, the received BRSRP strength is high when a terminal beam aligned to the direction of the base station is selected. Accordingly, a case of selecting another beam having a rather low gain rather than using the boresight beam having the highest gain among the beam candidates of the terminal occurs.

2. Smart beam detection (claimed disclosure according to an embodiment)

Claim 1: The overall concept of the present invention is a claim. That is, the terminal automatically provides the user with the direction angle with respect to the terminal movement direction so that the beam direction of the base station and the boresight beam of the terminal are beam paired. Accordingly, the user makes a claim on the concept of specifying an installation site to obtain the maximum BRSRP performance by moving the CPE terminal.

Claim 2: Specifically, when a specific BID of the terminal is selected by the beam searching algorithm at a specific point, beam verification information about the beam ID and angle information provided in advance by the terminal is used. In order to move the terminal in the corresponding beam ID direction, movement angle information in the left/right, up/down, that is, the Azimuth direction or the Elevation direction is calculated based on the boresight. A method of optimizing reception performance by moving a terminal in a corresponding direction by providing movement angle information to a user is claimed.

Here, the terminal generates a look-up table having information on the Boresight Beam ID, the BIDs of other beams, and the relative angles of each beam through beam verification provided by the Modem Chipset. In addition, a software algorithm that calculates the angle from the corresponding beam to the boresight beam and provides information about the beam movement direction to the user is applied.

Claim 3: All HW, software, and mechanical parts for implementing the method of Claim 2 shall be claimed. That is, in terms of hardware, the boresight direction of the corresponding array antenna module is displayed on the CPE terminal. In addition, it displays the angle at regular intervals in the left/right or up/down directions, or a combination of the two directions. Accordingly, the claims include displaying the terminal so that the user can directly move the terminal as much as the provided direction information based on the boresight direction.

In terms of software, information on the left/right and up/down movement angles based on the boresight direction is displayed on the display of the terminal. Alternatively, it is displayed along with the BRSRP size value indicating the strength of the received signal on the user computer or smartphone App, that is, the Device manager software UI through Bluetooth or USB linkage. Accordingly, it is included in the claims to provide information so that the user can find the optimal installation location while checking the BRSRP value. Mechanically, the user can manually move the CPE terminal in the Azimuth or Elevation direction indicated by the UI. Alternatively, when the user gives a command to 'move', the mechanical structure part including the automatic movement of the terminal by itself is also included in the claims.

Claim 4: The boresight beam is aligned in the beam direction of the base station by applying the smart beam detection method proposed by the present invention. In addition, fine tuning is possible within the boresight beam range, and the present invention applies regardless of the number of array antenna modules, and it is also included in the claims.

Meanwhile, in relation to beam selection and 5G CPE installation process according to the beam search process according to the present disclosure, a plurality of array antennas may be used. In this regard, FIG. 13B is a conceptual diagram illustrating beams generated by different array antennas toward a 5G base station according to an embodiment. 1 to 13B , the array antenna 1100 may include a plurality of array antennas ANT1 to ANT4 to perform multiple input/output (MIMO) with the 5G base station 700 . In this regard, each of the array antennas ANT1 to ANT4 may be disposed inside the body and configured to generate a directional beam through a plurality of antenna elements.

Meanwhile, the transceiver circuit 1250 is configured to vary the phase of the signal applied to the plurality of antenna elements. In this regard, a phase shifter (PS) may be operatively connected for each antenna element or subgroup unit of the antenna element.

In this regard, the controller 1400 may control the transceiver circuit 1250 to perform a beam selection process based on the beam direction information and the current direction information of the main body. In this regard, the controller 1400 may transmit optimal beam ID information corresponding to the optimal beam to the transceiver circuit 1250 . Accordingly, the transceiver circuit 1250 may control the phase of the signal applied to the plurality of antenna elements based on the optimal beam ID information. Meanwhile, when the power button is turned on, the controller 1400 may perform a beam selection process using any one of the plurality of array antennas ANT1 to ANT4.

According to an embodiment, when the power button is turned on, the first beam selection process may be performed using the first array antenna ANT1 among the plurality of array antennas. Also, the second beam selection process may be performed using the second array antenna ANT2 among the plurality of array antennas. In this regard, if the 5G CPE has a plurality of RF chains, the first beam selection process and the second beam selection process may be simultaneously performed. In addition, any one of the first beam selection process and the second beam selection process may be performed, and then the remaining processes may be performed.

In this regard, from a far-field perspective, the first LOS angle between the first array antenna ANT1 and the 5G base station 700 and the second LOS angle between the second array antenna ANT2 and the 5G base station 700 are the same Do. However, the first optimal beam B1 of the first array antenna ANT1 and the second optimal beam B2 of the second array antenna ANT2 may be different depending on the hardware configuration, the mechanical configuration, and the antenna characteristics. In this regard, the controller 1400 may select a direction between the first direction of the first optimal beam selected in the first beam selection process and the second direction of the second optimal beam selected in the second beam selection process as the optimal beam direction. have. Accordingly, the beam search time can be reduced when performing the beam search and beam selection process through different array antennas.

Meanwhile, when the optimal beam direction of only one of the different array antennas ANT1 to ANT4 is different from the optimal beam direction of the other array antennas, the controller 1400 may transmit information on the corresponding array antenna to the 5G base station 1400 . .

Accordingly, when an array antenna having a different optimal beam direction is selected, the 5G base station 1400 may perform a scheduling and beam search process in consideration of an optimal beam direction of the corresponding array antenna. Alternatively, a spatial diver through an array antenna combination having different optimal beam directions, that is, a first array antenna ANT1 having a first optimal beam B1 and a second array antenna ANT2 having a second optimal beam B2. Spatial diversity may be performed. Accordingly, the controller 1400 may perform DL-MIMO by receiving the second signal through the second optimum beam B2 while receiving the first signal through the first optimum beam B1. Also, the controller 1400 may perform UL-MIMO by transmitting the second signal through the second optimum beam B2 while transmitting the first signal through the first optimum beam B1.

According to an embodiment, when it is determined that beam blockage has occurred while the communication relay device is in operation, the controller 1400 may select an optimal beam by performing a beam selection process. That is, in addition to the case of installing the communication relay device, even when the beam is blocked due to a change in the external radio wave environment, the body of the 5G communication relay device can be moved by performing the beam selection process. In this regard, the controller 1400 may control to display direction-related information on a terminal in which the 5G CPE or device management application is installed so that the main body is moved in a direction corresponding to the optimal beam.

In this regard, when the main body is moved due to beam blocking, the controller 1400 may change the current beam corresponding to the optimal beam in the direction in which the main body is moved to a beam adjacent to the optimal beam to obtain reception quality. Also, the controller 1400 may determine a final position at which the main body is to be fixed by comparing the optimal beam direction with the signal strength of the changed adjacent beam.

As described above, an optimal installation method of the 5G communication relay device according to the present invention and a configuration for controlling the same have been examined. In this regard, the technical effect of the present invention is that when installing the mmWave CPE terminal to which the beam searching algorithm is applied, a beam direction in which a transmit/receive signal is good can be found and installed. In this regard, there is a problem in that it is difficult to actually find an optimal signal while actually moving the terminal by hand or by mechanically moving the terminal by the user.

Therefore, there is a need to develop a 5G smart CPE terminal that automatically informs the beam direction of the base station with the strongest signal. Therefore, if the corresponding function is implemented, the user has an advantage by moving the terminal in the corresponding direction indicated by the terminal to easily find an installation point having a high signal strength.

Therefore, when the present invention is implemented in an actual CPE terminal, it is determined that it will be a differentiation point as one of the advantages that can greatly appeal to operators or terminal users through 5G CPE, which provides functions not found in existing CPE terminals. From the operator's point of view, it has the advantage of reducing costs in terms of maintenance.

The present invention may be implemented by applying the corresponding function to the CPE terminal requested by operators supporting the mmWave service in the future.

In the above, an optimal installation method of a 5G communication relay device according to the present invention and a configuration for controlling the same have been described. A wireless communication system including a 5G CPE, an electronic device, and a base station performing such a 5G wireless signal control method is as follows. In this regard, FIG. 14 illustrates a block diagram of a wireless communication system to which the methods proposed in the present specification can be applied.

Referring to FIG. 14 , the wireless communication system includes a first communication device 910 and/or a second communication device 920 . 'A and/or B' may be interpreted as having the same meaning as 'including at least one of A or B'. The first communication device may represent a base station, and the second communication device may represent an electronic device, that is, a 5G UE (or the first communication device may represent a terminal and the second communication device may represent a base station).

Meanwhile, the first communication device may indicate a support station and the second communication device may indicate 5G CPE (or the first communication device may indicate 5G CPE and the second communication device may indicate a base station). Also, the first communication device may indicate 5G CPE, and the second communication device may indicate an electronic device, that is, a 5G UE (or the first communication device indicates an electronic device, that is, a 5G UE, and the second communication device indicates a 5G CPE can represent).

Base station (BS) is a fixed station (fixed station), Node B, evolved-NodeB (eNB), gNB (Next Generation NodeB), BTS (base transceiver system), access point (AP: Access Point), gNB (general) NB), 5G system, network, AI system, RSU (road side unit), may be replaced by terms such as robot. In addition, the terminal (Terminal) may be fixed or have mobility, UE (User Equipment), MS (Mobile Station), UT (user terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), AMS (Advanced Mobile) Station), WT (Wireless terminal), MTC (Machine-Type Communication) device, M2M (Machine-to-Machine) device, D2D (Device-to-Device) device, vehicle, robot, AI module may be replaced by terms such as

The first communication device and the second communication device include a processor 911,921, a memory 914,924, one or more Tx/Rx radio frequency modules 915,925, Tx processors 912,922, Rx processors 913,923 , including

antennas

916 and 926 . The processor implements the functions, processes and/or methods salpinned above. More specifically, in DL (communication from a first communication device to a second communication device), an upper layer packet from the core network is provided to the processor 911 . The processor implements the functions of the L2 layer. In DL, the processor provides multiplexing between logical channels and transport channels, allocation of radio resources to the second communication device 920, and is responsible for signaling to the second communication device. A transmit (TX) processor 912 implements various signal processing functions for the L1 layer (ie, the physical layer). The signal processing function facilitates forward error correction (FEC) in the second communication device, and includes coding and interleaving. The coded and modulated symbols are divided into parallel streams, each stream mapped to OFDM subcarriers, multiplexed with a reference signal (RS) in the time and/or frequency domain, and using Inverse Fast Fourier Transform (IFFT) are combined together to create a physical channel carrying a stream of time domain OFDMA symbols. The OFDM stream is spatially precoded to generate multiple spatial streams. Each spatial stream may be provided to a different antenna 916 via a separate Tx/Rx module (or transceiver) 915 . Each Tx/Rx module may modulate an RF carrier with a respective spatial stream for transmission. In the second communication device, each Tx/Rx module (or transceiver) 925 receives a signal via each antenna 926 of each Tx/Rx module. Each Tx/Rx module recovers information modulated with an RF carrier and provides it to a receive (RX) processor 923 . The RX processor implements the various signal processing functions of layer 1. The RX processor may perform spatial processing on the information to recover any spatial streams destined for the second communication device. If multiple spatial streams are destined for the second communication device, they may be combined into a single OFDMA symbol stream by multiple RX processors. The RX processor uses a Fast Fourier Transform (FFT) to transform the OFDMA symbol stream from the time domain to the frequency domain. The frequency domain signal includes a separate OFDMA symbol stream for each subcarrier of the OFDM signal. The symbols and reference signal on each subcarrier are recovered and demodulated by determining the most probable signal placement points transmitted by the first communication device. These soft decisions may be based on channel estimate values. The soft decisions are decoded and deinterleaved to recover the data and control signal originally transmitted by the first communication device on the physical channel. Corresponding data and control signals are provided to the processor 921 .

The UL (second communication device to first communication device) is handled in the first communication device 910 in a manner similar to that described with respect to the receiver function in the second communication device 920 . Each Tx/Rx module 925 receives a signal via a respective antenna 926 . Each Tx/Rx module provides an RF carrier and information to the RX processor 923 . The processor 921 may be associated with a memory 924 that stores program code and data. Memory may be referred to as a computer-readable medium.

In relation to the present invention described above, it is possible to implement the control unit for controlling the components of the 5G communication relay device (CPE) and the design of these components as computer-readable codes in the medium in which the program is recorded. The computer-readable medium includes any type of recording device in which data readable by a computer system is stored. Examples of computer-readable media include Hard Disk Drive (HDD), Solid State Disk (SSD), Silicon Disk Drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. There is also a carrier wave (eg, transmission over the Internet) that is implemented in the form of. In addition, the computer may include the

control unit

180, 510, 1250, 1400 of the terminal or 5G CPE. Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

Claims

In the 5G communication relay device,

a main body configured to be rotatable in left and right directions and up and down directions to receive a 5G wireless signal; and

A control unit for controlling to display a specific beam direction through a device management application when the power button on the communication relay device is in an ON state,

The control unit is

5G communication relay device for displaying a boresight beam direction and signal strength as the main body is moved according to the specific beam direction.
According to claim 1,

The control unit transmits a beam ID (BID) of a current beam and a reception quality (BRSRP) of the current beam to the device management application,

When the optimal beam is selected, the device management application transmits direction information on the optimal beam direction to the controller.
According to claim 1,

The control unit is

When the power button is turned on, receiving beam verification information and beam direction information for beam detection,

5G communication relay device for selecting an optimal beam by performing a beam selection process based on the beam direction information and the current direction information of the main body.
4. The method of claim 3,

The control unit is

performing a beam search process around an area predicted in the direction of the optimal beam based on the beam verification information and the beam direction information;

In the beam search process,

5G communication relay device for performing the beam search process using a beam ID of an area predicted in the direction of the optimal beam.
4. The method of claim 3,

The control unit is

When the optimal beam is selected and an input related to movement of the main body is received in the device management application, the main body is moved in the optimal beam direction;

5G communication relay device for acquiring reception quality by changing a current beam to a beam adjacent to the optimal beam.
6. The method of claim 5,

The control unit is

Comparing the optimal beam direction and the signal strength for the changed adjacent beam to determine a final position (final position) to which the main body is fixed, 5G communication relay device.
4. The method of claim 3,

When the controller transmits ID information for the communication relay device, the device management application transmits the beam verification information and the beam direction information corresponding to the ID information to the controller.
4. The method of claim 3,

a memory configured to store information associated with the beam verification information and the beam direction information;

The control unit is

When the power button is in an ON state, the 5G communication relay device obtains information related to the beam verification information and the beam direction information from the memory, and performs the beam selection process using the information.
8. The method of claim 7,

a memory configured to store information associated with the beam verification information and the beam direction information;

The control unit is

When the ID information for the communication relay device is transmitted, the first beam verification information and the first beam direction information corresponding to the ID information are received from the device management application,

and performing the beam selection process when the first beam verification information and the first beam direction information match the second beam verification information and the second beam direction information obtained from the memory.
4. The method of claim 3,

an array antenna disposed inside the body and configured to generate a directional beam through a plurality of antenna elements; and

Further comprising a transceiver circuit configured to vary the phase of the signal applied to the plurality of antenna elements,

The control unit, based on the beam direction information and the current direction information of the main body, to control the transceiver circuit to perform the beam selection process, 5G communication relay device.
11. The method of claim 10,

The control unit transmits optimum beam ID information corresponding to the optimum beam to the transceiver circuit,

The transceiver circuit controls a phase of a signal applied to the plurality of antenna elements based on the optimal beam ID information.
11. The method of claim 10,

The array antenna includes a plurality of array antennas to perform multiple input/output (MIMO) with a 5G base station,

The control unit is

When the power button is turned on, the beam selection process is performed using any one of the plurality of array antennas.
13. The method of claim 12,

When the power button is turned on, a first beam selection process is performed using a first array antenna among the plurality of array antennas,

performing a second beam selection process using a second array antenna among the plurality of array antennas;

5G communication relay apparatus for selecting a direction between a first direction of a first optimal beam selected in the first beam selection process and a second direction of a second optimal beam selected in the second beam selection process as an optimal beam direction.
13. The method of claim 12,

The control unit is

When it is determined that beam blockage has occurred in the operation state of the communication relay device, the beam selection process is performed to select the optimal beam;

5G communication relay device for controlling to display information related to the direction so that the main body is moved in a direction corresponding to the optimal beam.
15. The method of claim 14,

The control unit is

When the beam blocking occurs and the main body is moved, the current beam corresponding to the optimal beam in the direction in which the main body is moved is changed to a beam adjacent to the optimal beam to obtain reception quality,

Comparing the optimal beam direction and the signal strength for the changed adjacent beam to determine a final position (final position) to which the main body is fixed, 5G communication relay device.