WO2020241921A1 - Beamforming electronic device - Google Patents

Abstract

Provided is an electronic device including a plurality of antenna arrays according to the present invention. The electronic device comprises: first and second antenna arrays disposed at different locations from each other; and a control unit which, while communicating via the first antenna array, determines whether a motion due to rotation about at least one axis has occurred in the electronic device, and upon an occurrence of said motion, communicates via the second antenna array. In addition, the present invention may provide a method of selecting a sensor-based antenna array on the basis of the state of movement and rotation of the electronic device.

Description

Electronic devices that perform beamforming

The present invention relates to an electronic device that performs beamforming. In more detail, it relates to a method of performing beamforming by using sensor information in an electronic device having an array antenna.

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

The functions of electronic devices are diversifying. For example, there are functions of data and voice communication, taking pictures and videos through a camera, recording voice, playing music files through a speaker system, and outputting images or videos 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 providing visual content such as broadcasting and video or television programs.

As the functions of such electronic devices are diversified, they are implemented in the form of a multimedia player with complex functions such as, for example, taking photos 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, wireless communication systems using LTE communication technology have recently been commercialized in electronic devices, providing various services. In addition, in the future, wireless communication systems using 5G communication technology are expected to be commercialized and 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 a Sub6 band below 6GHz band. However, in the future, it is expected to provide 5G communication service using millimeter wave (mmWave) band in addition to Sub6 band for faster data rate.

Meanwhile, the frequency bands to be allocated for 5G communication services in the mmWave band are considered to be 28 GHz band, 39 GHz, and 64 GHz band. Meanwhile, in the 28 GHz band, 39 GHz, and 64 GHz band, the length of the wavelength is short, and thus, there is a problem that the cell coverage providing the corresponding communication service is reduced. In order to solve this problem, in the millimeter wave (mmWave) band, an array antenna in which a plurality of antenna elements are arranged at regular intervals in a terminal other than a base station must be provided.

Meanwhile, such array antennas may be configured to be disposed on a plurality of electronic devices. In this way, through the plurality of array antennas, the optimum array antenna may be selected again according to the optimum signal direction according to the movement of the terminal.

However, even when a plurality of array antennas are provided as described above, there is a problem that the optimum array antenna and the optimum beam combination are changed on the terminal and the base station according to the movement or rotation state of the terminal.

Therefore, when the terminal requests a beam scanning process to the base station to search for the optimal array antenna and the optimal beam whenever the terminal moves or rotates, the base station has to continuously provide such a beam scanning process for a plurality of terminals. There is this.

It is an object of the present invention to solve the above and other problems. In addition, another object is to provide a method for selecting an array antenna in consideration of movement and rotation states of the electronic device in an electronic device including a plurality of array antennas.

Another object of the present invention is to provide an electronic device capable of selecting an optimal array antenna and selecting an optimal beam in consideration of movement and rotation states of the electronic device.

An electronic device having a plurality of array antennas according to the present invention is provided to achieve the above or other objects. The electronic device may include first and second array antennas disposed at different positions; And a controller configured to determine whether or not a motion according to rotation of the electronic device occurs based on at least one axis during communication through the first array antenna, and to perform communication through the second array antenna when the motion occurs. , A sensor-based array antenna selection method may be provided in consideration of movement and rotation states of electronic devices.

According to an embodiment, the first array antenna is disposed on one of four side surfaces forming the electronic device, and the second array antenna is disposed on the other side opposite to the one side. I can.

According to an embodiment, the control unit may determine whether a flip event in which the positions of the front and rear surfaces are changed through the sensor unit occurs and a rotation direction. In this case, when the flip event occurs in the first rotation direction, the first array antenna may be controlled to transmit and receive signals to and from the base station through the second array antenna.

According to an embodiment, when the flip event occurs in the second rotation direction, control may be performed to transmit and receive signals with the base station through one of the first array antenna and the second array antenna.

According to an embodiment, a third array antenna disposed on a rear surface or another side of the electronic device is further provided. In addition, it may further include a transceiver circuit (transceiver circuit) for controlling a signal to be transmitted and received through one of the first to third array antenna. At this time, the control unit controls the transceiver circuit to transmit and receive signals to and from the base station through the first array antenna, and when the flip event occurs in the first rotation direction, the signal is transmitted through the second array antenna. The transceiver circuit can be controlled to transmit and receive.

According to an embodiment, an application processor (AP) configured to control the control unit and the sensor unit may further be included. In this case, the control unit may control the first array antenna to transmit and receive the signal through the first array antenna based on the control information received from the base station. In addition, by performing synchronization with the AP, direction information in which the electronic device is disposed may be identified. Also, based on the direction information, the transmission/reception unit circuit may be controlled to transmit and receive the signal through an optimal beam of the first array antenna or the second array antenna.

According to an embodiment, when the flip event occurs in a first rotation direction, the controller receives an interrupt message from the sensor, and when receiving the interrupt message, the controller transmits the signal through the second array antenna and It is possible to control the transceiver circuit to receive. At this time, the beam of the second array antenna is determined as a beam corresponding to the beam ID of the first array antenna according to the flip event, so that even when the electronic device moves or rotates, it is optimal with the base station without a separate beam scanning process. It is possible to perform communication with the array antenna of and an optimal beam. In addition, even when the electronic device moves or rotates, a separate beam scanning process is not requested to the base station, thereby reducing the burden of the base station providing an optimal beam to the terminal. Accordingly, even when the electronic device moves or rotates, there is an advantage that seamless communication with the base station is possible.

According to an embodiment, the controller may control the transmission/reception unit circuit to perform a beam scanning operation to transmit and receive the signal through the optimal beam of the second array antenna. In this case, the transmission/reception unit circuit may be controlled to transmit and receive the signal from the base station through the optimal beam of the second array antenna.

According to an embodiment, when the flip event occurs in a second rotation direction, the controller receives a second interrupt message from the sensor, and when the second interrupt message is received, the controller includes the second arrangement according to the rotation angle. The transmission/reception unit circuit may be controlled to transmit and receive the signal through an antenna or the third array antenna.

According to an embodiment, the control unit controls the transmission/reception unit circuit to perform a beam scanning operation to transmit and receive the signal through the optimum beam of the third array antenna, and the optimum beam of the third array antenna is Through the transmission and reception of the signal from the base station it is possible to control the transceiver circuit.

According to an embodiment, when receiving the second interrupt message, the controller may control the transceiver circuit to transmit and receive the signal through the first array antenna and the third array antenna. In addition, the transmission/reception unit circuit may be controlled to transmit and receive the signal from the base station through the optimal beam of the first array antenna and the optimal beam of the third array antenna.

According to an embodiment, the transmission/reception unit circuit includes first to third transmission/reception unit circuits respectively controlling the first to third array antennas. In addition, it may further include an IFIC (Intermediate Frequency Integrated Chip) connected to the first to third transceiver circuits, controlling the signal to be transmitted and received through at least one of the first to third transceiver circuits. have. Accordingly, when the flip event occurs in a horizontal direction, the IFIC may control the first transceiver circuit to transmit and receive the signal through the second transceiver circuit.

According to an embodiment, when the flip event occurs in a horizontal direction, the IFIC turns off a power amplifier connected to the first transceiver circuit and turns on a power amplifier connected to the second transceiver circuit. The first and second transceivers may be controlled to be (on).

According to an embodiment, when the flip event occurs in a horizontal direction, the controller determines a beam ID of the second array antenna corresponding to the beam ID of the first array antenna before the flip event occurs through the IFIC. It can be transmitted to the second transceiver circuit.

According to an embodiment, the control unit transmits the signal through the optimal beam of the second array antenna when the quality of the signal from the base station through the beam corresponding to the beam ID of the second array antenna is less than a threshold. And controlling the second transceiver circuit to perform a beam scanning operation for receiving. Accordingly, even when the electronic device moves or rotates, a separate beam scanning process is not requested to the base station, thereby reducing the burden of the base station providing the optimal beam to the terminal, and the beam scanning process only when the optimal beam scan is required. It has the advantage of being able to perform. Accordingly, even when the electronic device moves or rotates, there is an advantage that seamless communication with the base station is possible.

According to an embodiment, the controller controls the second transceiver circuit to transmit and receive the signal to and from the base station through a beam corresponding to the beam ID of the second array antenna, The first transceiver circuit may be controlled to perform a team scanning process for searching for an optimal beam with a second base station.

According to another aspect of the present invention, an electronic device for performing sensor-based beamforming including a plurality of array antennas is provided. The electronic device may include first and second array antennas disposed at different positions of the electronic device; And a baseband processor. Meanwhile, the baseband processor controls to receive a first signal through the first array antenna, determines whether a flip event occurs in which the positions of the front and rear surfaces of the electronic device are changed, and the flip When an event occurs, control may be performed to receive a second signal through the second array antenna. Accordingly, a sensor-based array antenna selection method may be provided in consideration of the movement and rotation states of the electronic device.

According to an embodiment, the first array antenna is disposed on one of four side surfaces forming the electronic device, and the second array antenna is disposed on the other side opposite to the one side. I can. Meanwhile, a third array antenna disposed on a rear surface or another side of the electronic device; And a transceiver circuit for controlling a signal to be transmitted and received through one of the first to third array antennas. In this case, the baseband processor may determine whether a flip event in which the positions of the front surface and the rear surface are changed and a rotation direction through the sensor unit occur.

According to an embodiment, the baseband processor controls the transmission/reception unit circuit to transmit and receive signals to and from the base station through the first array antenna, and determine that the flip event has occurred in the left and right rotation direction through the sensor unit. If so, it is possible to control the transmission/reception unit circuit to transmit and receive the signal through the second array antenna.

According to an embodiment, an application processor (AP) configured to control the baseband processor and the sensor unit may further be included. Meanwhile, the baseband processor controls a first transceiver circuit to transmit and receive the signal through the first array antenna based on the control information received from the base station, and synchronizes with the AP, Direction information in which the electronic device is disposed may be identified. Also, based on the direction information, the transmission/reception unit circuit may be controlled to transmit and receive the signal through an optimal beam of the first array antenna or the second array antenna.

According to an embodiment, the baseband processor receives an interrupt message from the sensor unit when the flip event occurs in a horizontal rotation direction, and when receiving the interrupt message, the baseband processor transmits the signal through the second array antenna. The transceiver circuit can be controlled to transmit and receive. In this case, the beam of the second array antenna may be determined as a beam corresponding to the beam ID of the first array antenna according to the flip event. Accordingly, even when the electronic device moves or rotates, a separate beam scanning process is not requested to the base station, thereby reducing the burden of the base station providing the optimal beam to the terminal, and the beam scanning process only when the optimal beam scan is required. It has the advantage of being able to perform. Accordingly, even when the electronic device moves or rotates, there is an advantage that seamless communication with the base station is possible.

According to the present invention, there is an advantage in that it is possible to provide a sensor-based array antenna selection method in consideration of movement and rotation states of an electronic device.

In addition, according to the present invention, even when the electronic device moves or rotates, there is an advantage that communication can be performed with the base station, the optimal array antenna, and the optimal beam without a separate beam scanning process.

In addition, according to the present invention, even when the electronic device is moved or rotated, a separate beam scanning process is not requested to the base station, thereby reducing the burden of the base station providing the optimal beam to the terminal.

In addition, according to the present invention, even when the electronic device moves or rotates, there is an advantage that seamless communication with the base station is possible.

1A is a block diagram illustrating an electronic device related to the present invention, and FIGS. 1B and 1C are conceptual views of an example of an electronic device related to the present disclosure viewed from different directions.

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

3 is a conceptual diagram of an optimal beam selection process between a base station and an electronic device according to the present invention.

4 shows a beam forming process and an omni-directional beam transmission process in a base station according to the present invention.

5 shows a layer diagram of a 5G channel mapping protocol according to the present invention.

6 shows the concept of beamforming between a base station (BS) and a terminal (UE) and procedures for the same.

7 shows a conceptual diagram of a transmission process through a specific beam in a base station according to the present invention.

8A and 8B show a detailed configuration of an electronic device including an array antenna for performing beamforming according to the present invention.

9A shows a structure in which a plurality of array antennas according to the present invention are disposed on an electronic device.

9B shows a configuration of array antennas and a plurality of wireless communication circuits that can be implemented in an electronic device according to the present invention.

10A shows a detailed configuration of an electronic device including a plurality of RFICs and IFICs for controlling the RFICs according to the present invention.

10B and 10C illustrate a configuration of a plurality of RFICs and an IFIC controlling the same in an electronic device having a plurality of array antennas according to the present invention.

11 illustrates an embodiment of changing an array antenna that performs beamforming according to various rotation types of an electronic device according to the present invention.

12 is a flowchart illustrating a method of selecting an array antenna and forming a beam according to whether a flip operation occurs according to the present invention.

13 is a flowchart illustrating a method of selecting an array antenna and forming a beam using sensor information according to the present invention.

14 is a flowchart illustrating a method of selecting an array antenna and forming a beam using sensor information according to another embodiment of the present invention.

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

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar elements are denoted by the same reference numerals regardless of reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used interchangeably in consideration of only the ease of preparation of the specification, and do not have meanings or roles that are distinguished from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description will be omitted. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all modifications included in the spirit and scope of the present invention It should be understood to include equivalents or substitutes.

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

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility.

Electronic devices described herein include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistants (PDA), a portable multimedia player (PMP), a navigation system, and a slate PC. , Tablet PC (tablet PC), ultrabook (ultrabook), wearable device (wearable device, for example, smartwatch, glass-type terminal (smart glass), HMD (head mounted display)), etc. may be included. have.

However, it will be readily apparent to those skilled in the art that the configuration according to the embodiment described in the present specification may also be applied to fixed terminals such as digital TVs, desktop computers, and digital signage, except when applicable only to mobile terminals. will be.

1A to 1C, FIG. 1A is a block diagram illustrating an electronic device related to the present invention, and FIGS. 1B and 1C are conceptual views of an example of an electronic device related to the present disclosure viewed from different directions.

The electronic device 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, and a power supply unit 190. ), etc. The components shown in FIG. 1A are not essential for implementing an electronic device, and thus an electronic device described in the present specification may have more or fewer components than the components listed above.

More specifically, among the components, the wireless communication unit 110 may be configured between the electronic device 100 and the wireless communication system, between the electronic device 100 and other electronic devices 100, or between the electronic device 100 and an external server. It may include one or more modules that enable wireless communication between. In addition, the wireless communication unit 110 may include one or more modules that connect 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 wireless communication unit 110 may include at least one of a 4G wireless communication module 111, a 5G wireless communication module 112, a short-range communication module 113, and a location information module 114.

The 4G wireless communication module 111 may transmit and receive 4G base stations and 4G signals through a 4G mobile communication network. At this time, the 4G wireless communication module 111 may transmit one or more 4G transmission signals to the 4G base station. In addition, the 4G wireless communication module 111 may receive one or more 4G reception signals from the 4G base station.

In this regard, an uplink (UL) multi-input multi-output (MIMO) may be performed by a plurality of 4G transmission signals transmitted to the 4G base station. In addition, a downlink (DL) multi-input multiple output (MIMO) may be performed by a plurality of 4G reception signals received from a 4G base station.

The 5G wireless communication module 112 may transmit and receive 5G base stations and 5G signals 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 have a co-located structure disposed at the same location within a cell. Alternatively, the 5G base station may be disposed in a separate location from the 4G base station in a stand-alone (SA) structure.

The 5G wireless communication module 112 may transmit and receive 5G base stations and 5G signals through a 5G mobile communication network. In this case, the 5G wireless communication module 112 may transmit one or more 5G transmission signals to the 5G base station. In addition, the 5G wireless communication module 112 may receive one or more 5G received 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. On the other hand, as the 5G frequency band, the Sub6 band, which is a band below 6GHz, 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 to expand communication coverage with a base station.

Meanwhile, regardless of the 5G frequency band, in a 5G communication system, a greater number of multiple input multiple outputs (MIMO) may be supported to improve transmission speed. In this regard, uplink (UL) MIMO may be performed by a plurality of 5G transmission signals transmitted to the 5G base station. In addition, downlink (DL) MIMO may be performed by a plurality of 5G reception signals received from the 5G base station.

Meanwhile, the wireless communication unit 110 may be in a dual connectivity (DC) state with a 4G base station and a 5G base station through the 4G wireless communication module 111 and the 5G wireless communication module 112. In this way, the dual connection between 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 4G wireless communication system, and NR is New Radio, which means 5G wireless communication system.

Meanwhile, if the 4G base station and the 5G base station have a co-located structure, it is possible to improve throughput through inter-CA (Carrier Aggregation). In the EN-DC state, a 4G reception signal and a 5G reception signal may be simultaneously received through the 4G wireless communication module 111 and the 5G wireless communication module 112.

The short range communication module 113 is for short range communication, and includes Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and NFC. Near field communication may be supported by using at least one of (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies. The short-range communication module 114 may be configured between the electronic device 100 and a wireless communication system, between the electronic device 100 and other electronic devices 100, or between the electronic device 100 and other electronic devices 100 through wireless area networks. ) And a network in which the other electronic device 100 or an external server is located may support wireless communication. The local area wireless communication network may be a wireless personal area network (Wireless Personal Area Networks).

Meanwhile, short-range communication between electronic devices may be performed using the 4G wireless communication module 111 and the 5G wireless communication module 112. In an embodiment, short-range communication may be performed between electronic devices through a device-to-device (D2D) method without passing through a base station.

Meanwhile, carrier aggregation (CA) using at least one of the 4G wireless communication module 111 and 5G wireless communication module 112 and the Wi-Fi communication module 113 for transmission speed improvement and communication system convergence (convergence) This can be done. In this regard, 4G + WiFi carrier aggregation (CA) may be performed using the 4G wireless communication module 111 and the Wi-Fi communication module 113. Alternatively, 5G + WiFi carrier aggregation (CA) may be performed using the 5G wireless communication module 112 and the Wi-Fi communication module 113.

The location information module 114 is a module for obtaining a location (or current location) of an electronic device, and a representative example thereof is a GPS (Global Positioning System) module or a WiFi (Wireless Fidelity) module. For example, if the electronic device utilizes a GPS module, the electronic device may acquire the location of the electronic device using a signal transmitted from a GPS satellite. As another example, when the electronic device utilizes the Wi-Fi module, the location of the electronic device may be obtained 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 114 may perform any function among other modules of the wireless communication unit 110 in order to obtain data on the location of the electronic device as a substitute or additionally. The location information module 114 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 112, the electronic device may acquire the location of the electronic device based on information of the 5G wireless communication module and a 5G base station transmitting or receiving a wireless signal. In particular, since the 5G base station in the mmWave band is deployed in a small cell having a narrow coverage, it is advantageous to obtain the location of the electronic device.

The input unit 120 includes a camera 121 or an image input unit for inputting an image signal, a microphone 122 for inputting an audio signal, or an audio input unit, and a user input unit 123 for receiving information from a user, for example, , A touch key, a mechanical key, etc.). The voice data or image data collected by the input unit 120 may be analyzed and processed as a user's control command.

The sensing unit 140 may include one or more sensors for sensing at least one of information in the electronic device, information on surrounding environments surrounding the electronic device, and user information. For example, the sensing unit 140 includes a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity. Sensor (G-sensor), gyroscope sensor (gyroscope sensor), motion sensor (motion sensor), RGB sensor, infrared sensor (IR sensor: infrared sensor), fingerprint sensor (finger scan sensor), ultrasonic sensor (ultrasonic sensor) , Optical sensor (for example, camera (see 121)), microphone (microphone, see 122), battery gauge, environmental sensor (for example, barometer, hygrometer, thermometer, radiation detection sensor, It may include at least one of a heat sensor, a gas sensor, etc.), and a chemical sensor (eg, an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the electronic device disclosed in the present specification may combine and utilize information sensed by at least two or more of these sensors.

The output unit 150 is for generating an output related to visual, auditory or tactile sense, and includes at least one of the display unit 151, the sound output unit 152, the hap tip module 153, and the light output unit 154 can do. The display unit 151 may implement a touch screen by forming a layer structure or integrally with the touch sensor. The touch screen may function as a user input unit 123 that provides 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.

The interface unit 160 serves as a passage between various types of external devices connected to the electronic device 100. The interface unit 160 connects a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, and a device equipped with an identification module. It may include at least one of a port, an audio input/output (I/O) port, an input/output (video I/O) port, and an earphone port. The electronic device 100 may perform appropriate control related to the connected external device in response to the connection of the external device to the interface unit 160.

In addition, the memory 170 stores data supporting various functions of the electronic device 100. The memory 170 may store a plurality of application programs or applications driven by the electronic device 100, data for operation of the electronic device 100, and commands. At least some of these application programs may be downloaded from an external server through wireless communication. In addition, at least some of these application programs may exist on the electronic device 100 from the time of shipment for basic functions of the electronic device 100 (eg, incoming calls, outgoing functions, message reception, and outgoing functions). Meanwhile, the application program may be stored in the memory 170, installed on the electronic device 100, and driven by the controller 180 to perform an operation (or function) of the electronic device.

In addition to operations related to the application program, the controller 180 generally controls overall operations of the electronic device 100. The controller 180 may provide or process appropriate information or functions to a 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, in order to drive an application program stored in the memory 170, the controller 180 may control at least some of the components examined together with FIG. 1A. Furthermore, in order to drive the application program, the controller 180 may operate by combining at least two or more of the components included in the electronic device 100 with each other.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to each of the components included in the electronic device 100. The power supply unit 190 includes a battery, and the battery may be a built-in battery or a replaceable battery.

At least some of the components may operate in cooperation with each other to implement an operation, control, or control method of an electronic device according to various embodiments described below. Further, the operation, control, or control method of the electronic device may be implemented on the electronic device by driving at least one application program stored in the memory 170.

1B and 1C, the disclosed electronic device 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto, and may be applied to various structures such as a watch type, a clip type, a glass type, or a folder type in which two or more bodies are relatively movably coupled, a flip type, a slide type, a swing type, and a swivel type. . Although it will relate to a specific type of electronic device, a description of a specific type of electronic device may be generally applied to other types of electronic devices.

Here, the terminal body may be understood as a concept referring to the electronic device 100 as at least one aggregate.

The electronic device 100 includes a case (for example, a frame, a housing, a cover, etc.) forming an exterior. As shown, the electronic device 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in an inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on the front of the terminal body to output information. As illustrated, the window 151a of the display unit 151 may be mounted on the front case 101 to form the front surface of the terminal body together with the front case 101.

In some cases, electronic components may be mounted on the rear case 102 as well. Electronic components that can be mounted on the rear case 102 include a removable battery, an identification module, and a memory card. In this case, a rear cover 103 for covering the mounted electronic component may be detachably coupled to the rear case 102. Accordingly, when the rear cover 103 is separated from the rear case 102, the electronic components mounted on the rear case 102 are exposed to the outside. Meanwhile, a part of the side surface of the rear case 102 may be implemented to operate as a radiator.

As shown, when the rear cover 103 is coupled to the rear case 102, a part of the side surface of the rear case 102 may be exposed. In some cases, when the rear case 102 is combined, the rear case 102 may be completely covered by the rear cover 103. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b or the sound output unit 152b to the outside.

The electronic device 100 includes a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, and first and second sound output units. Cameras 121a and 121b, first and second operation units 123a and 123b, microphone 122, interface unit 160, and the like may be provided.

The display unit 151 displays (outputs) information processed by the electronic device 100. For example, the display unit 151 may display execution screen information of an application program driven by the electronic device 100, or UI (User Interface) and GUI (Graphic User Interface) information according to such execution screen information. .

In addition, two or more display units 151 may exist depending on the implementation form of the electronic device 100. In this case, in the electronic device 100, a plurality of display units may be spaced apart or integrally disposed on one surface, or may be disposed on different surfaces.

The display unit 151 may include a touch sensor that senses a touch on the display unit 151 so as to receive a control command by a touch method. Using this, when a touch is made to the display unit 151, the touch sensor detects the touch, and the controller 180 may be configured to generate a control command corresponding to the touch based on this. The content input by the touch method may be letters or numbers, or menu items that can be indicated or designated in various modes.

As such, the display unit 151 may form a touch screen together with a touch sensor, and in this case, the touch screen may function as a user input unit 123 (see FIG. 1A). In some cases, the touch screen may replace at least some functions of the first manipulation unit 123a.

The first sound output unit 152a may be implemented as a receiver that transmits a call sound to the user's ear, and the second sound output unit 152b is a loud speaker that outputs various alarm sounds or multimedia reproduction sounds. ) Can be implemented.

The light output unit 154 is configured to output light for notifying when an event occurs. Examples of the event include message reception, call signal reception, missed call, alarm, schedule notification, email reception, and information reception through an application. When the user's event confirmation is detected, the controller 180 may control the light output unit 154 to terminate the output of light.

The first camera 121a processes an image frame of a still image or moving picture obtained by an image sensor in a photographing mode or a video call mode. The processed image frame may be displayed on the display unit 151 and may be stored in the memory 170.

The first and second manipulation units 123a and 123b are an example of a user input unit 123 that is operated to receive a command for controlling the operation of the electronic device 100, and may also be collectively referred to as a manipulating portion. have. The first and second operation units 123a and 123b may be employed in any manner as long as the user operates while receiving a tactile feeling such as touch, push, and scroll. In addition, the first and second manipulation units 123a and 123b may also be employed in a manner in which the first and second manipulation units 123a and 123b are operated without a user's tactile feeling through proximity touch, hovering touch, or the like.

Meanwhile, the electronic device 100 may be provided with a fingerprint recognition sensor for recognizing a user's fingerprint, and the controller 180 may use fingerprint information detected through the fingerprint recognition sensor as an authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive a user's voice and other sounds. The microphone 122 may be provided in a plurality of locations and configured to receive stereo sound.

The interface unit 160 becomes a passage through which the electronic device 100 can be connected to an external device. For example, the interface unit 160 is a connection terminal for connection with other devices (eg, earphones, external speakers), a port for short-range communication (eg, an infrared port (IrDA Port), a Bluetooth port (Bluetooth Port), a wireless LAN port, etc.], or at least one of a power supply terminal for supplying power to the electronic device 100. The interface unit 160 may be implemented in the form of a socket for accommodating an external card such as a subscriber identification module (SIM) or a user identity module (UIM), or a memory card for storing information.

A second camera 121b may be disposed on the rear surface of the terminal body. In this case, the second camera 121b has a photographing direction substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix format. Such a camera may be referred to as an array camera. When the second camera 121b is configured as an array camera, an image may be photographed in various ways using a plurality of lenses, and an image of better quality may be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. When a subject is photographed by the second camera 121b, the flash 124 illuminates light toward the subject.

A second sound output unit 152b may be additionally disposed on the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a, and may be used to implement a speakerphone mode during a call.

At least one antenna for wireless communication may be provided in the terminal body. The antenna may be embedded in the terminal body or may be formed in a case. Meanwhile, a plurality of antennas connected to the 4G wireless communication module 111 and the 5G wireless communication module 112 may be disposed on the side of the terminal. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

Meanwhile, four or more antennas disposed on the side of the terminal may be implemented to support MIMO. In addition, when the 5G wireless communication module 112 operates in a millimeter wave (mmWave) band, since each of the plurality of antennas is implemented as an array antenna, a plurality of array antennas may be disposed in the electronic device.

The terminal body is provided with a power supply unit 190 (refer to FIG. 1A) for supplying power to the electronic device 100. The power supply unit 190 may include a battery 191 built in the terminal body or configured to be detachable from the outside of the terminal body.

Hereinafter, a structure of a multiplex transmission system according to the present invention and an electronic device having the same, in particular, a power amplifier in a heterogeneous radio system and embodiments related to an electronic device having the same will be described with reference to the accompanying drawings. It is obvious to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention.

2 shows a configuration of a wireless communication unit of an electronic device capable of operating in a plurality of wireless communication systems according to the present invention. Referring to FIG. 2, the electronic device includes a first power amplifier 210, a second power amplifier 220, and an RFIC 250. In addition, the electronic device may further include a modem 400 and an application processor 500. Here, the modem 400 and the application processor AP 500 may be physically implemented in one chip, and may be implemented in a logical and functional separate form. However, the present invention is not limited thereto and may be implemented in the form of a physically separated chip according to an application.

Meanwhile, the electronic 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 and has an 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 5G band and the 4G band have a large difference in bands, 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. In this way, 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 physically, it is possible to be implemented in one chip.

Meanwhile, the application processor (AP) 500 is configured to control the operation of each component of the electronic device. Specifically, the application processor (AP) 500 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 an electronic device. Accordingly, the modem 400 may operate the power circuit of the transmitter and the receiver through the RFIC 250 in a low power mode.

In this regard, when it is determined that the electronic device is in the idle mode, the application processor AP 500 may control the RFIC 250 through the modem 300 as follows. For example, if the electronic device is in the idle mode, at least one of the first and second power amplifiers 110 and 120 operates in a low power mode or is turned off through the modem 300 through the RFIC. 250 can be controlled.

According to another embodiment, when the electronic device is in a low battery mode, the application processor (AP) 500 may control the modem 300 to provide wireless communication capable of low power communication. For example, when an 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) 500 may control the modem 400 to enable wireless communication with the lowest power. Accordingly, even though the throughput is slightly sacrificed, the application processor (AP) 500 may control the modem 400 and the RFIC 250 to perform short-range communication using only the short-range communication module 113.

According to another embodiment, when the remaining battery level of the electronic device is greater than or equal to a threshold, the modem 300 may be controlled to select an optimal wireless interface. For example, the application processor (AP, 500) may control the modem 400 to receive through both the 4G base station and the 5G base station according to the remaining battery capacity and available radio resource information. In this case, the application processor (AP, 500) may receive the remaining battery level information from the PMIC, and the available radio resource information from the modem 400. Accordingly, if the remaining battery capacity and available radio resources are sufficient, the application processor (AP, 500) may control the modem 400 and the RFIC 250 to receive reception through both the 4G base station and the 5G base station.

Meanwhile, in the multi-transceiving system of FIG. 2, the transmitting unit and the receiving unit of each radio system may be integrated into one transmitting and receiving unit. Accordingly, there is an advantage in that a circuit part that integrates two types of system signals can be removed from the RF front-end.

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

In addition, when separated for each communication system, it is impossible to control other communication systems as necessary, or because a system delay is increased due to this, it is impossible to efficiently allocate resources. On the other hand, the multiple transmission/reception system as shown in FIG. 2 has the advantage of enabling efficient resource allocation since it is possible to control other communication systems as needed, and thereby minimize system delay.

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 can 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 can operate in the 4G band and the other can operate in the millimeter wave band. have.

Meanwhile, by integrating the transmitting and receiving unit and the receiving unit, it is possible to implement two different wireless communication systems with a single antenna using a transmitting and receiving antenna. At this time, 4x4 MIMO can be implemented using four antennas as shown in FIG. 2. In this case, 4x4 DL MIMO may be performed through 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 can be implemented 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 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. Meanwhile, when the 5G communication system is implemented with 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, a switch-type splitter or power divider is built into the RFIC corresponding to the RFIC 250, so that separate parts do not need to be placed outside, thereby improving component mounting performance. I can. Specifically, it is possible to select the transmission unit (TX) of two different communication systems by using a single pole double throw (SPDT) type switch inside the RFIC corresponding to the control unit 250.

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

The duplexer 231 is configured to separate signals in the transmission band and the reception band from each other. In this case, the signal of the transmission band transmitted through the first and second power amplifiers 210 and 220 is applied to the antennas ANT1 and ANT4 through the first output port of the duplexer 231. On the other hand, signals in 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 in a transmission band or a reception band and block signals in the remaining bands. In this case, the filter 232 may include a transmission filter connected to the first output port of the duplexer 231 and a reception filter connected to the second output port of the duplexer 231. Alternatively, the filter 232 may be configured to pass only the signal of the transmission band or only the signal of the reception band according to the control signal.

The switch 233 is configured to transmit only either a transmission signal or a reception signal. In an embodiment of the present invention, the switch 233 may be configured in the form of a single pole double throw (SPDT) so as to separate a transmission signal and a reception signal in a time division multiplexing (TDD) scheme. 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.

Meanwhile, in another embodiment of the present invention, the switch 233 is applicable to a frequency division multiplexing (FDD) scheme. In this case, the switch 233 may be configured in the form of a Double Pole Double Throw (DPDT) so as to connect or block a transmission signal and a reception signal, respectively. On the other hand, 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 control unit (or a first processor) and a second control unit (a 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 divided into one circuit logically or functionally.

The modem 400 may perform control and signal processing 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 a 4G base station and/or a 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 at 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. Further, 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, specific operations and functions of an electronic device having array antennas operating in different bands according to the present invention equipped with a multiple transmission/reception system as shown in FIG. 2 will be described below.

In the 5G communication system according to the present invention, the 5G frequency band may be a higher frequency band than the Sub6 band. For example, the 5G frequency band may be a millimeter wave band, but is not limited thereto and may be changed according to an application.

3 is a conceptual diagram of an optimal beam selection process between a base station and an electronic device according to the present invention. Referring to FIG. 3A, signals can be transmitted and received through an optimal beam of a base station BS and an optimal beam of a first array antenna ANT1 of a terminal UE.

On the other hand, as shown in FIG. 3(b), when the UE rotates in a certain direction at an angle greater than or equal to the threshold, the optimal beam scanning through the second array antenna ANT2 instead of the first array antenna ANT1 and the selected optimum It is more advantageous to transmit and receive signals through the beam.

In this regard, in the case of using the mmWave band, it is possible to connect to the base station through beamforming. At this time, continuous connection is possible only when the array antenna for generating the beam is changed or the ID of the beam is changed due to a sudden change in direction of the UE.

If it is difficult to maintain a connection with a base station due to a change in the direction of the UE, it is necessary to search for an optimal beam ID through beam scanning again. In this case, data loss may occur during a time period for searching for all possible beams through the corresponding array antenna, for example, the second array antenna ANT2.

In order to solve this problem, the present invention detects the movement and rotation state of an electronic device such as a terminal (UE), selects an optimal array antenna from among a plurality of array antennas, and quickly and accurately determines the optimal beam of the array antenna. I can.

Specifically, referring to FIG. 3(b), in the present invention, when the terminal (UE), that is, the electronic device rotates in the direction of one or more specific rotation axes, different array antennas are selected, that is, the first array antenna (ANT1) It relates to selecting the second array antenna ANT2 at. In addition, when the array antenna is rotated in the direction of a specific rotation axis in addition to the issue of selection of the array antenna, it is important to set the communication with the base station through which beam of the array antenna. Accordingly, in the present invention, a method of adaptively selecting a specific array antenna and a specific beam according to the arrangement state and rotation state of the terminal (UE), that is, the electronic device will be described.

On the other hand, referring to Figures 3 (a) and 3 (b), in the present invention, even when the terminal (UE), that is, the arrangement or rotation state of the electronic device is changed, the antenna provided by the base station (BS) There is an advantage that the shape of the beam is not changed. In this regard, from a standard point of view, the base station (BS) has an advantage that it is not necessary to repeat the optimal beam search process according to the UE movement state after initial beam selection. In addition, there is an advantage that the terminal (UE), that is, an electronic device, can select an optimal array antenna (ie, an optimal virtual antenna port) in addition to the optimal beam. Accordingly, there is an advantage in that the base station does not need to frequently change a plurality of array antennas, that is, an optimal virtual antenna port.

Meanwhile, FIG. 4 shows a beam forming process and an omni-directional beam transmission process in a base station according to the present invention. Referring to FIG. 4A, a base station (TRP) may select an optimal beam for a specific terminal through a transmission beamforming process. In this case, an optimal beam may be selected through a beam scanning (beam selection) process through possible N transmission beams. In addition, repletion may be performed in the beam scanning process or in the transmission process through a specific beam. Specifically, k repetitive transmissions may be performed for each beam, and accordingly, k repetitive transmissions are performed for each of the N transmission beams. Accordingly, the base station (TRP) may perform an N*k beam scanning (beam selection) process or an N*k transmission process.

With respect to the above-described beam scanning (beam selection) procedure, this may be referred to as beam management (BM). On the other hand, the BM procedure is a set of base stations (eg, gNB, TRP, etc.) and/or terminal (eg, UE) beams that can be used for downlink (downlink, DL) and uplink (uplink, UL) transmission/reception. ) As an L1 (layer 1)/L2 (layer 2) procedure for obtaining and maintaining), and may include the following procedures and terms.

-Beam measurement: The base station or the UE measures the characteristics of the received beamforming signal.

-Beam determination: An operation in which the base station or the UE selects its own transmission beam (Tx beam)/reception beam (Rx beam).

-Beam sweeping: An operation of covering a spatial area using a transmit and/or receive beam for a predetermined time interval in a predetermined manner.

-Beam report: An operation in which the UE reports information on a beam formed signal based on beam measurement.

Therefore, in the present invention, when the base station transmits control information including antenna port information to the terminal (UE), the terminal (UE) can perform beam reporting to the base station through beam measurement and beam determination based on the corresponding antenna port information. have. In addition, the UE may perform beam sweeping and beam reporting according to a movement and/or rotation state even when control information is not received from the base station.

Meanwhile, the BM procedure can be divided into (1) a DL BM procedure using a synchronization signal (SS)/physical broadcast channel (PBCH) block or a CSI-RS, and (2) a UL BM procedure using a sounding reference signal (SRS). . In addition, each BM procedure may include Tx beam sweeping to determine the Tx beam and Rx beam sweeping to determine the Rx beam.

Meanwhile, the terminal may perform cell search, system information acquisition, beam alignment for initial access, and DL measurement based on the above-described SSB. SSB is used interchangeably with SS/PBCH (Synchronization Signal/Physical Broadcast Channel) block.

Details regarding the synchronization of 5G NR are disclosed in 3GPP 38.211. Meanwhile, the synchronization of 5G NR is determined according to the position of the synchronization signal in the NR frame. Regarding the synchronization of the 5G NR, some procedures may be performed through multi-beam sweeping in a base station (TRP) as shown in FIG. 4(a). On the other hand, in the initial synchronization process of 5G NR, it may be performed through an omni-direction beam in a base station (TRP) as shown in FIG. 4(b).

Meanwhile, referring to FIG. 4(b), omni-direction TX may be performed in a base station (TRP). In this case, in consideration of the distance to the UE, a directional beam may be used in the UE. In this regard, control information such as cell common information may be provided to the terminal (UE) through omni-directional transmission in the base station (TRP). On the other hand, when there is no information of high importance such as control information or a grant procedure by a terminal (UE), the omni-direction TX may be performed with a specific number of times, for example, repeated transmission k times.

Meanwhile, Table 1 shows 5G communication system specifications in relation to an electronic device that performs a beam management (BM) procedure according to the present invention.

Frequency		In 28GHz range
System Bandwidth		100MHz for Single Carrier. Open to Multi Carrier Operation
Maximum number of Carriers		DL: OFDMA, UL: OFDMA
Sub-carrier spacing		75KHz (5 times larger than current LTE spacing)
Sub-frame length		0.2ms (5 times shorter than current LTE spacing)
Synchronization Signal		PSS, SSS, ESS
Max number of Layers		8 (Max 2 layers for one UE)
Modulation Scheme Signals		QPSK, 16QAM, 64QAM in DL/UL
Reference Signal	Downlink	Beam measurement Reference Signal (BRS)
		Beam Refinement Reference Signal (BRRS)
		Reference Signal (DM-RS) associated with ePBCH
		CSI Reference Signal (CSI-RS)
		Phase noise reference signal, associated with xPDSCH
		UE-specific Reference Signal (DM-RS) associated with xPDSCH
		UE-specific Reference Signal (DM-RS) associated with xPDCCH
	Uplink	Phase noise reference signal, associated with xPUSCH
		Sounding reference signal, associated with of xPUSCH or xPUCCH
		Demodulation reference signal, associated with xPUCCH
		Demodulation reference signal, associated with xPUSCHof xPUCCH

Referring to Table 1, the mmWave band of the 28 GHz band may be used, but is not limited thereto, and the 39 GHz band or the 64 GHz band may be used depending on the application. Meanwhile, a CSI-RS, which is a UE-specific reference signal, may be used as a downlink (DL) reference signal. In addition, as a downlink (DL) reference signal, a beam measurement reference signal (BMRS) and a beam refinement reference signal (BRRS) for a beam management (BM) procedure may be used.

Meanwhile, a 5G channel mapping protocol according to the 5G communication system specifications shown in Table 1 will be described as follows. In this regard, Figure 5 shows a 5G channel mapping protocol layer diagram according to the present invention. 5, a 5G channel mapping protocol layer is composed of a physical (PHY) layer, a transport layer, and a medium access (MAC) layer. Referring to Tables 1 and 5, downlink (DL) transmission from a base station to a terminal and uplink (UL) transmission from a terminal to a base station are performed in the PHY layer.

Regarding downlink (DL) transmission at the base station (or downlink (DL) reception at the terminal), control information is transmitted (or received) through a physical downlink control channel (PDCCH). Meanwhile, the terminal receiving the control information receives data from the base station through a specific antenna port in a specific time/frequency resource. At this time, data is transmitted (or received) through a physical downlink shared channel (PDSCH).

In addition, with respect to uplink (UL) transmission in the terminal (or uplink (UL) reception in the base station), control information (or a response message for control information) is a physical uplink control channel: PUCCH) is transmitted (or received). Meanwhile, the base station receiving the control information (or a response message to the control information) receives data from the terminal through a specific antenna port in a specific time/frequency resource.

Meanwhile, the dotted line in FIG. 5 does not mean direct mapping between channels. This indicates a kind of indirect mapping, such as scheduling or hybrid automatic repeat request (HARQ) response.

Specifically, FIG. 5 shows 5G/NR channel mapping through the PHY layer in the MAC layer based on 3GPP 38.321 and 38.211. In 5G/NR channel mapping, channel mapping and channel processing may be performed for each of the different channels. Compared with the 4G LTE PHY layer, there are the following differences.

-NR may not use CRS (Cell Specific Reference Signal).

-NR PDSCH requires DMRS, whereas LTE PDSCH does not use DMRS. This is because if there is no CRS in NR, the NR PDSCH will request its own reference signal (DMRS).

When a communication channel between the terminal (UE) and the base station (BS) is connected through such 5G channel mapping, a beamforming protocol for optimal beam search between the terminal (UE) and the base station may be performed. In this regard, FIG. 6 shows the concept of beamforming between a base station (BS) and a terminal (UE) and procedures for the same. Specifically, referring to FIG. 6(a), the base station may perform a beam scanning process for optimal beam search through an array antenna. In this regard, the base station transmits a signal through N beams in consideration of all possible beams, and the terminal receives the signal. Meanwhile, the terminal transmits a received signal quality indicator to the base station, and the base station may select an optimal beam based on this. In this case, the terminal may also receive signals through K beams in consideration of all possible beams. Therefore, the optimal beam search process between the base station and the terminal is a process of selecting an optimal beam among N*K beams.

Accordingly, the base station may select an n-th beam from among the N beams as an optimal beam in BS through a beam scanning process with the terminal (UE). In addition, through the beam scanning process, the UE may also select the k-th beam among the K beams as an optimal beam in MS. In this case, the UE may select one of the plurality of array antennas, for example, the k-th beam of the second array antenna ANT2 as an optimal beam in MS.

Meanwhile, referring to FIG. 6(b), when accessing the base station for the first time or when there is no radio resource for signal transmission, the terminal may perform a random access procedure (RACH) to the base station. In this regard, the UE may perform an initial cell search operation such as synchronization with the base station when the power is turned on or newly enters the cell.

In addition, the terminal having finished initial cell search receives a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) according to the information carried on the PDCCH, thereby receiving more specific system information. Can be obtained. Thereafter, in the RACH procedure, the base station gNB may perform beam sweeping, and the terminal UE may perform beam selection. Specifically, the base station (gNB) may sweep the beam using a different DL beam for each Synchronization Signal Block (SSB). Accordingly, the UE will detect the optimal beam from the base station gNB and inform the beam selection by using a specific PRACH resource mapped to each DL beam.

Meanwhile, a UE in an RRC connected state through Radio Resource Control (RRC) reconfiguration may perform TX/RX beam change processes P2 and P3. After the optimal beam selection process is performed through the RACH procedure P1, the TX beam change process (P2) and the RX beam change process (P3) may be performed. Therefore, in the process P1 to P3, the TRP (transmission) may determine the TRP RX beam for uplink reception based on the downlink measurement of the UE for one or more TX beams of the TRP. On the other hand, TIS (reception) may determine the RX beam of the terminal for downlink reception based on the indication of the TRP based on uplink measurement of one or more TX beams of the terminal.

Accordingly, the overall process of NR Beam Management is as shown in FIG. 6(b), and the Beam Management procedure plays an important role in both the RACH process and the process after RRC connection. At this time, TX represents a base station (TRP) TX, and RX represents a terminal (UE) RX. Meanwhile, all of these procedures may be performed based on a channel state information (CSI) measurement/report procedure.

The UE's random access (RACH) procedure can be summarized as shown in [Table 2] below.

	Type of signal	Action/information acquired
Step 1	PRACH preamble in UL	Initial beam acquisition RA-Random selection of preamble ID
Step 2	Random Access Response on DL-SCH	Timing Alignment Information RA-Preamble ID Initial UL Grant, Temporary C-RNTI
Step 3	UL transmission over UL-SCH	RRC connection request terminal identifier
Step 4	Contention Resolution on DL	Temporary C-RNTIRRC_CONNECTED on PDCCH for initial access C-RNTI on PDCCH for UE

As described above, the Beam Management procedure plays an important role in both the RACH process and the process after RRC connection. In this regard, referring to FIGS. 3 and 6, it is possible to transmit control information through multi-beam sweeping and repetition for beam management in the RACH process and the process after RRC connection.

Meanwhile, FIG. 7 shows a conceptual diagram of a transmission process through a specific beam in a base station according to the present invention. Referring to FIG. 7(a), a base station (TRP or gNB) may transmit a specific reference signal through a TX beam. In this case, it may be assumed that the TX beam through which a specific reference signal is transmitted is the same beam. Meanwhile, the specific reference signal may be a Sounding Reference Signal (SRS), but is not limited thereto and may be various types of reference signals according to applications. For example, the reference signal from the base station may be the aforementioned SSB or may be a CSI-RS. The CSI-RS may be used to perform other roles, such as channel status reporting, in addition to beam management. In order to receive such a reference signal, the UE may select an optimal beam while scanning (sweeping) the RX beam according to time.

Meanwhile, referring to FIG. 7(b), the base station transmits a reference signal using a fixed beam without beam sweeping, and the terminal (UE) may perform RX beam sweeping in the RX beam tuning angle range. . Accordingly, the UE may measure the quality of a signal received through each of the K RX beams, such as signal strength, and report this to the base station.

Meanwhile, referring to FIGS. 7(a) and 7(b), a reception process in the UE is as follows. In this regard, the gNB or the UE must tune its receiver in a direction that can receive signals from the transmitter with optimal quality. Meanwhile, the following may be considered in relation to determining a direction that can be received with such optimal quality.

-When the gNB receives a signal from the UE, it is assumed that the gNB can know in advance information about the optimal direction from the UE in the form of a CSI report.

-When the UE receives a signal from the gNB, it is assumed that the UE can know information on the optimal direction from the gNB in advance (the gNB detects the optimal direction based on the measurement of the SRS signal quality for multiple beams from the UE. And indicates the optimal direction to the UE).

As described above, in relation to the beamforming and beam changing process in the base station and the terminal, an electronic device having an array antenna that performs beamforming using sensor information according to the present invention will be described. In this regard, FIGS. 8A and 8B show a detailed configuration of an electronic device including an array antenna for performing beamforming according to the present invention. Specifically, FIG. 8A shows a detailed configuration of an electronic device including an array antenna for performing beamforming according to the present invention, and FIG. 8B shows a detailed configuration of a transmission/reception unit of the electronic device according to the present invention.

8A and 8B, an electronic device includes a plurality of array antenna modules (Antenna Modules #1, #2, #3), a plurality of transceiver circuits 1251 to 1253, and a control unit (baseband processor or modem) ( 1400). In addition, the electronic device includes an application processor (AP) 1500 and a sensor unit 1600.

The plurality of array antenna modules #1, #2, and #3 include first to third array antennas ANT1 to ANT3. Here, the first to third array antennas ANT1 to ANT3 are disposed at different positions of the electronic device, and may receive signals in different directions or transmit signals in different directions. In addition, the gain and phase control circuit 230 of FIG. 2 may be connected to each of the first to third array antennas ANT1 to ANT3.

Meanwhile, FIG. 9A shows a structure in which a plurality of array antennas according to the present invention are disposed on an electronic device. 2, 8A, 8B, and 9A, a first array antenna ANT1, that is, an antenna module 1, is located on one of four side surfaces forming an electronic device. Is placed. Meanwhile, the second array antenna ANT2, that is, the antenna module 2, may be disposed on the other side opposite to the one side. Specifically, the first and second array antennas ANT1 and ANT2 may be disposed on an upper side surface and a lower side surface.

Meanwhile, the third array antenna ANT3, that is, the antenna module 3, may be disposed on a rear surface or another side of the electronic device. Meanwhile, when the four array antennas are disposed on each of the four sides of the electronic device, a fourth array antenna ANT4, that is, an antenna module 3 (ANTENNA MODULE 4) may be further provided. In this case, the third and fourth array antennas ANT3 and ANT4 may be disposed on different side surfaces, for example, on a left side surface and a right side surface, respectively.

Therefore, it is assumed that the first and second array antennas ANT1 and ANT2 are disposed on the upper and lower sides of the electronic device, and the third and fourth array antennas ANT3 and ANT4 are disposed on the left and right sides. I can. On the other hand, it is assumed that the first and second array antennas ANT1 and ANT2 are disposed on the left and right sides of the electronic device, and the third and fourth array antennas ANT3 and ANT4 are disposed on the upper and lower sides. You may.

On the other hand, the control unit 1400 determines whether or not a motion according to rotation occurs based on at least one axis during communication through the first array antenna ANT1, and communicates through the second array antenna ANT2 when the motion occurs. Control to perform. To this end, the control unit 1400 may determine whether a flip event in which the positions of the front and rear surfaces are changed through the sensor unit 1600 and a rotation direction occur.

Here, the sensor unit 1600 may include at least one of an acceleration sensor, a magnetic sensor, a gravity sensor, a gyroscope sensor, and a motion sensor. I can. However, the present invention is not limited thereto, and may include an arbitrary sensor capable of detecting a moving state or a rotation state of the electronic device and a configuration controlling the sensor.

Meanwhile, FIG. 9B shows a configuration of array antennas and a plurality of wireless communication circuits that can be implemented in an electronic device according to the present invention.

First, referring to FIG. 9B, an electronic device according to an embodiment of the present invention includes an IFIC (Intermediate Frequency IC) 1300, a plurality of RFICs 1251 to 1254, and a plurality of array antennas each including a plurality of antennas. ANT1 to ANT4). In addition, the electronic device may further include a modem (Modem, 1400) and an application processor (AP).

First, each of the array antennas ANT1 to ANT4 may be composed of a plurality of antenna elements configured to transmit and receive signals. The array antennas ANT1 to ANT4 are antennas operating in a frequency band for 5G communication, and may be antennas capable of mmWave communication.

Meanwhile, each of the array antennas ANT1 to ANT4 may have a configuration including a power amplifier (PA) and a low noise amplifier. In addition, the power amplifier and the low power amplifier may each be operable in a 5G communication system.

Each of the array antennas ANT1 to ANT4 may be configured to transmit or receive vertical polarization (V) and horizontal polarization (H), respectively. Here, each of the array antennas ANT1 to ANT4 may operate as a transmission antenna for radiating a transmission signal amplified from a power amplifier and a reception antenna for transferring a reception signal to a low noise amplifier.

Meanwhile, each of the plurality of RFICs 1251 to 1254 may include a phase shifter (not shown). The phase shift unit may be provided for each antenna element constituting the array antenna. In addition, beamforming may be performed using a phase difference between the respective antenna elements.

Meanwhile, by operating only one of the plurality of RFICs 1251 to 1254, the electronic device can transmit and receive signals with the base station in any one of the azimuth regions that can be divided into four. Alternatively, all of the plurality of RFICs 1251 to 1254 are operated and individually controlled to transmit and receive signals with the base station at different angles for each of the array antennas ANT1 to ANT4.

Meanwhile, when the IFIC 1300 has 8 ports, the RFIC may supply 4 pairs of vertically polarized signals and horizontally polarized signals to different BFICs. For example, the first to fourth vertically polarized signals may be transmitted/received through PORT-A including first to fourth ports of IFIC 1300. In addition, the first horizontally polarized signal to the fourth horizontally polarized signal may be transmitted and received through the PORT-B consisting of the fifth to eighth ports of the IFIC 1300.

Meanwhile, signals transmitted and received through PORT-A and PORT-B are not necessarily limited to polarization signals that are orthogonal to each other. For example, a signal transmitted and received through PORT-A and PORT-B may be a signal capable of time division or frequency division. In addition, signals transmitted and received through PORT-A and PORT-B may be IF signals and control signals, respectively. At this time, the signal transmitted and received through PORT-B may further include a reference signal in addition to the control signal. Here, the reference signal may be a reference signal for a local oscillator in the RFICs 1251 to 1254.

Meanwhile, FIG. 10A shows a detailed configuration of an electronic device including a plurality of RFICs and IFICs for controlling the RFICs according to the present invention. 9B and 10A, each array antenna includes a plurality of antenna elements. For example, the first array antenna ANT1 may include a plurality of antenna elements ANT11 to ANT114 or ANT11 to ANT18. Here, each array antenna may be implemented with a variety of antenna elements, such as 2, 4, 8, 16. In this case, each array antenna may operate in at least one of the first frequency band and the second frequency band. Here, the first frequency band is a 28 GHz band, and the second frequency band may be a 39 GHz band, but is not limited thereto, and may be an arbitrary band of the mmWave band.

Meanwhile, the RFIC 1250, which is a transceiver circuit, may be configured to control the power amplifier PA, the low noise amplifier LNA, and the phase shifter PS. Further, the IFIC 1300 is configured to control a plurality of RFICs 1250, and the baseband processor 1400 corresponding to the modem may control the plurality of RFICs 1250 through the IFIC 1300.

Meanwhile, referring to FIGS. 8A, 8B, 9B, and 10A, a connection between a plurality of RFICs 1251 to 1254 and the IFIC 1400 is a representation of a UE configuration. That is, the connection between the plurality of RFICs 1251 to 1254 and the IFIC 1400 is not limited to any one standard and can be changed according to UE implementation and application.

Although the connection between the plurality of RFICs 1251 to 1254 and the IFIC 1400 is a UE implementation issue, components that must be included in the plurality of RFICs 1251 to 1254 are generic. Accordingly, power combining/distributing circuits, switching networks, amplifiers and phase shifters are provided within the plurality of RFICs 1251 to 1254, which provide high level functionality for wireless communication.

Meanwhile, a block related to detection and calibration for determining whether a normal operation is performed and detecting a power level may be provided in the plurality of RFICs 1251 to 1254 and the IFIC 1400 according to the application. In addition, a power supply unit for driving the plurality of RFICs 1251 to 1254 and the IFIC 1400 may be provided inside and/or outside the plurality of RFICs 1251 to 1254 and the IFIC 1400.

Meanwhile, FIGS. 10B and 10C illustrate a configuration of a plurality of RFICs and an IFIC controlling the same in an electronic device having a plurality of array antennas according to the present invention. Referring to FIG. 10B, first to fourth RFICs 1251 to 1254 may be connected to the first to fourth array antennas 1111 to 1114, respectively. Meanwhile, the IFIC 1300 may be configured to be connectable to the first to fourth RFICs 1251 to 1254. In this case, the IFIC 1300 may be configured to provide an IF signal and an LO reference signal to at least one of the first to fourth RFICs 1251 to 1254.

Meanwhile, in the electronic device performing beamforming according to the present invention, it is necessary to select an optimal array antenna and an RFIC according to a rotational state of the electronic device, particularly a flip operation. To this end, it is possible to determine whether an electronic device rotates and/or flips through a motion sensor (not shown), and selects (or changes) an optimal array antenna and an RFIC based on this.

For example, in a process of transmitting and/or receiving a signal through the first array antenna 1111 on one side of the electronic device, the occurrence of a flip operation may be detected as the electronic device rotates in a specific direction. Accordingly, signals can be transmitted and/or received through an array antenna other than the first array antenna 1111 (for example, the second array antenna 1112 disposed on the side opposite to the first array antenna 1111). I can. That is, when the first array antenna 1111 and the first RFIC 1251 are initially operated, the occurrence of a flip operation may be detected. Accordingly, the modem 1400 may control the IFIC 1300 so that the second array antenna 1112 and the second RFIC 1252 operate according to the occurrence of the flip operation. Accordingly, as the occurrence of the flip operation is detected, both the optimum array antenna and the optimum RFIC can be changed.

Meanwhile, referring to FIG. 10C, a first RFIC 1251 is connected to the first and second array antennas 1111 and 1112, and a second RFIC 1252 is connected to the third and fourth array antennas 1113 and 1114. Can be connected. Also, the IFIC 1300 may be configured to be connectable to the first and second RFICs 1251 and 1252. In this case, the IFIC 1300 may be configured to provide an IF signal and an LO reference signal to at least one of the first and second RFICs 1251 and 1252.

Meanwhile, in an electronic device performing beamforming according to the present invention, it is necessary to select an optimal array antenna and an RFIC according to a rotational state of the electronic device, particularly a flip operation. To this end, it is possible to determine whether an electronic device rotates and/or flips through a motion sensor (not shown), and selects (or changes) an optimal array antenna and an RFIC based on this.

For example, in a process of transmitting and/or receiving a signal through the first array antenna 1111 on one side of the electronic device, the occurrence of a flip operation may be detected as the electronic device rotates in a specific direction. Accordingly, signals can be transmitted and/or received through an array antenna other than the first array antenna 1111 (for example, the second array antenna 1112 disposed on the side opposite to the first array antenna 1111). I can. That is, when the first array antenna 1111 and the first RFIC 1251 are initially operated, the occurrence of a flip operation may be detected. Accordingly, the modem 1400 may control the IFIC 1300 so that the second array antenna 1112 and the first RFIC 1251 operate according to the occurrence of the flip operation. Therefore, as the occurrence of the flip operation is detected, only the optimal array antenna is changed and the RFIC can be maintained as it is. In this case, even when a flip operation occurs, there is an advantage that the RFIC that transmits the signal can be maintained as it is while transmitting and receiving signals in a desired direction through the optimal antenna. Accordingly, even when a flip operation occurs, signals are transmitted and received through one RFIC, thereby solving the problem of signal discontinuity due to on/off of the RFIC module.

Meanwhile, FIG. 11 shows an embodiment of changing an array antenna that performs beamforming according to various rotation types of an electronic device according to the present invention. Referring to FIG. 11, a flip event may occur in an XY plane in a connected state, for example, an RRC connected state between a terminal and a base station.

Accordingly, when the flip event occurs in the first rotation direction, the control unit 1400 transmits and receives signals to and from the base station through the first array antenna ANT1 on the upper side and the second array antenna ANT2 on the lower side. Can be controlled to do. Here, in the flip event in the first rotation direction, the position of the front and rear sides of the electronic device is changed by substantially rotating 180 degrees based on the Z-axis, and the positions of the upper side and the rear side are changed.

Meanwhile, when the flip event occurs in the second rotation direction, the controller 1400 may control to transmit and receive signals to and from the base station through one of the first array antenna ANT1 and the second antenna ANT2. Here, the flip event in the second rotation direction is a state in which the front and rear positions of the electronic device are changed by substantially rotating 180 degrees based on the X-axis or the Y-axis. In this case, when the electronic device is rotated substantially 180 degrees based on the X-axis, the positions of the front and rear sides of the electronic device are changed, but the positions of the upper and rear sides are not changed. Therefore, when the flip event occurs in the X-axis direction, the controller 1400 may control to continuously transmit and receive signals to and from the base station through the first array antenna ANT1.

Meanwhile, when the electronic device is rotated substantially 180 degrees based on the Y-axis, the positions of the front and rear sides of the electronic device are not changed, but the positions of the upper side and the rear side are changed. Accordingly, when the flip event occurs in the Y-axis direction, the controller 1400 may control to transmit and receive signals to and from the base station through the second array antenna ANT2 on the lower side.

Meanwhile, when a rotation of 90 degrees occurs substantially in the XY plane, the controller 1400 may control to transmit and receive signals to and from the base station through the third array antenna ANT3 disposed on the left side. In addition, when rotation is substantially -90 degrees in the XY plane, the controller 1400 may control to transmit and receive signals to and from the base station through the fourth array antenna ANT4 disposed on the right side.

In this regard, assuming that the array antenna disposed on the left side is the first array antenna (ANT1), a rotation state of 90 degrees and a rotation of -90 degrees in the XY plane correspond to a flip event according to rotation of 180 degrees with respect to the Z axis. do. Accordingly, the control unit may control to transmit and receive signals with the base station through the second array antenna ANT2 disposed on the right side.

Meanwhile, referring to FIGS. 8A and 8B, the transceiver circuit 1250 may control a signal to be transmitted and received through one of the first to third array antennas ANT 1 to ANT3. In this regard, the control unit 1400 controls the transmission/reception unit circuit 1250 to transmit and receive signals to and from the base station through the first array antenna ANT1. Meanwhile, the controller 1400 may control the transceiver circuit 1250 to transmit and receive the signal through the second array antenna ANT2 when a flip event occurs in the first rotation direction.

Meanwhile, the application processor 1500 is configured to control the controller 1400 and the sensor unit 1600. In this regard, FIG. 12 is a flowchart of an array antenna selection and beamforming method according to whether a flip operation occurs according to the present invention. Referring to FIG. 12, a beam connection operation between a base station and a terminal (eg, an electronic device) is first performed. Thereafter, as described above, the terminal may determine whether a flip operation in which the front and rear arrangements are changed according to rotation in the X, Y, and Z axis directions (S120). Meanwhile, the flip operation is not limited to changing the front and rear arrangements, but includes a case where the optimal array antenna module is changed by substantially rotating 90 degrees on one axis.

Accordingly, when a flip operation occurs, a control process may be performed (S150) to switch to an optimal module according to motion sensing associated with a change in the rotation state of the terminal. In this case, the baseband processor corresponding to the modem may determine an optimal module (eg, a second array antenna) according to motion sensing associated with a change in the rotation state of the terminal.

Thereafter, when an optimal array antenna module and an RFIC corresponding thereto are selected, switching to the antenna module and the RFIC may be performed (S160). Accordingly, switching from the first array antenna to the second array antenna may be performed. Thereafter, an optimal beam alignment process for transmitting and/or receiving a signal through the second array antenna may be performed (S170). Accordingly, it is possible to connect the terminal to the base station (S180) and transmit and receive signals through the beam by using the beam selected through switching to the second array antenna and thus optimal beam alignment (search).

Meanwhile, FIG. 13 is a flowchart illustrating a method for selecting an array antenna and forming a beam using sensor information according to the present invention.

8A, 8B, and 13, the controller 1400 uses the first array antenna ANT1 to transmit and receive signals through the first array antenna ANT1, based on the control information received from the base station. It can be controlled (S110). In this case, the first array antenna ANT1 may be controlled so that the cell common control information among the control information is received through an omni-directional pattern without beamforming. On the other hand, the first array antenna ANT1 may be controlled so that the UE-specific control information among the control information is received as an optimal beam through a directional pattern.

In addition, the controller 1400 may synchronize with the AP to identify direction information in which the electronic device is disposed (S120). Accordingly, the controller 1400 may control the transceiver circuit 1250 to transmit and receive signals through the optimal beam of the first array antenna ANT1 based on the direction information (S130). Alternatively, the controller 1400 may control the transceiver circuit 1250 (S160 to S180) to transmit and receive signals through the optimal beam of the second array antenna ANT2 based on the direction information.

Meanwhile, when the controller 1400 senses that the flip event has occurred in the first rotation direction (S140), the controller 1400 may receive an interrupt message from the sensor (S150). Here, the first rotation direction is a rotation direction from the first array antenna ANT1 on the left side to the second array antenna ANT2 on the right side, and may be a left-right rotation direction. Specifically, the first rotation direction may be 180 degrees of rotation based on the Z-axis.

Accordingly, upon receiving the interrupt message, the transceiver circuit 1250 may be controlled (S160 to S180) to transmit and receive signals through the second array antenna ANT2. To this end, the control unit 1400 may perform switching from the first array antenna ANT1 to the second array antenna ANT2 to transmit and receive signals through the second array antenna ANT2 (S160). Here, the switching to the second array antenna ANT2 means transmitting or receiving a signal through the second array antenna ANT2 by transmitting a signal to the second transceiver circuit 1252 connected to the second array antenna ANT2. it means.

Thereafter, the controller 1400 may control the transceiver circuit 1250 to perform a beam scanning operation (S170) to transmit and receive signals through the optimal beam of the second array antenna ANT2. Also, the controller 1400 may control the transceiver circuit 1250 to transmit and receive signals from the base station (S180) through the optimal beam of the second array antenna ANT2. Accordingly, a communication link between the base station and the UE, for example, an RRC connection state may be established through the second array antenna ANT2.

Alternatively, when a flip event occurs in the first rotation direction, a signal may be transmitted and received directly from the base station through a specific beam of the second array antenna ANT2 without performing a beam scanning operation (S180). Accordingly, the controller 1400 may determine the beam of the second array antenna ANT2 as a beam corresponding to the beam ID of the first array antenna ANT1 according to the flip event.

Meanwhile, FIG. 14 is a flowchart illustrating a method of selecting an array antenna and forming a beam using sensor information according to another embodiment of the present invention. 8A, 8B, and 14, the control unit 1400 uses a first array antenna ANT1 to transmit and receive signals through the first array antenna ANT1 based on control information received from the base station. It can be controlled (S110). In this case, the first array antenna ANT1 may be controlled so that the cell common control information among the control information is received through an omni-directional pattern without beamforming. On the other hand, the first array antenna ANT1 may be controlled so that the UE-specific control information among the control information is received as an optimal beam through a directional pattern.

In addition, the controller 1400 may synchronize with the AP to identify direction information in which the electronic device is disposed (S120). Accordingly, the controller 1400 may control the transceiver circuit 1250 to transmit and receive signals through the optimal beam of the first array antenna ANT1 based on the direction information (S130). Alternatively, the controller 1400 may control the transceiver circuit 1250 (S160b to S180b) to transmit and receive signals through the optimal beam of the second array antenna ANT2 based on the direction information.

In particular, when sensing that the flip event has occurred in the second rotation direction (S140b), a second interrupt message is received from the sensor (S150b). Here, the second direction of rotation is the direction of rotation to the second array antenna ANT2 on the right side by rotating substantially 180 degrees from the first array antenna ANT1 on the left side, and referred to as the left and right rotation direction. can do. Alternatively, it may be referred to as a direction of rotation from the first array antenna ANT1 on the left side by 90 degrees to the third array antenna ANT3 on the upper side or the lower side, as a left and right rotation direction.

Accordingly, when receiving the second interrupt message, the control unit 1400 transmits and receives signals through the second array antenna ANT2 or the third array antenna ANT3 according to the rotation angle. Can be controlled. Therefore, when switching to the third array antenna ANT3 (S160b) according to the rotation angle, the control unit 1400 performs a beam scanning operation to transmit and receive signals through the optimal beam of the third array antenna ANT3 (S170b). ), it is possible to control the transceiver circuit 1250. Accordingly, the control unit 1400 may control the transceiver circuit 1250 to transmit and receive signals from the base station (S180b) through the optimal beam of the third array antenna ANT3. Accordingly, a communication link between the base station and the UE, for example, an RRC connection state may be established through the third array antenna ANT3.

Meanwhile, upon receiving the second interrupt message, the controller 1400 may control the transceiver circuit 1250 to transmit and receive signals through the first array antenna ANT1 and the third array antenna ANT3. In this regard, when the second rotation direction, that is, about 90 degrees with respect to the Y-axis, has the advantage that signals can be transmitted and received through the previous first array antenna ANT1 in addition to the third array antenna ANT3. have. In addition, the transceiver 1250 may be controlled to transmit and receive signals from the base station through the optimal beam of the first array antenna ANT1 and the optimal beam of the third array antenna ANT3. Accordingly, the electronic device has the advantage of increasing communication capacity by performing multiple input/output (MIMO) through the first and third array antennas ANT1 and ANT3.

Alternatively, the electronic device has an advantage of improving communication reliability by operating in a diversity mode in which the same data is received through the first and third array antennas ANT1 and ANT3. In particular, when a rotational state such as a flip event occurs, the communication environment may be unstable due to movement of the terminal itself or an increase in mobility. Therefore, it is preferable to operate in a diversity mode in which the same data is received through the first and third array antennas ANT1 and ANT3.

Meanwhile, referring to FIGS. 8A and 8B, the transceiver circuit 1250 may include first to third transceiver circuits 1251 to 1253 for controlling the first to third array antennas ANT1 to ANT3. have. In addition, it is connected to the first to third transceiver circuits (1251 to 1253), IFIC (Intermediate Frequency Integrated) that controls to transmit and receive signals through at least one of the first to third transceiver circuits (1251 to 1253). Chip, 1300) may be further included. Here, if the flip event occurs in the left and right rotation direction, that is, the first rotation direction, the IFIC 1300 controls the transmission and reception of signals through the second transmission/reception unit circuit 1252 from the first transmission/reception unit circuit 1251. I can.

Specifically, IFIC (1300), when the flip event occurs in the left and right rotation direction, the power amplifier connected to the first transceiver circuit 1251 is off (off), the power amplifier connected to the second transceiver circuit 1252 The first and second transmission/ reception units 1251 and 1252 may be controlled to be turned on. Accordingly, there is an advantage in that power consumption can be reduced by operating only a power amplifier connected to an array antenna that is actually used among a plurality of array antennas. Meanwhile, referring to FIG. 10, during the beam scanning process (S170) of the second array antenna ANT2, the operating state of the power amplifier connected to the second transceiver circuit 1252, that is, the gain and the output power level should be stabilized. . Accordingly, while reducing the power consumption of the power amplifier, it is possible to ensure a stable operation of the power amplifier in a data communication state between the base station and the terminal (UE).

On the other hand, as described above, when data communication is performed using a corresponding beam of the second array antenna ANT2 without a beam scanning process (S170) when a flip event occurs, the power amplifier can be driven in a different manner. Specifically, when transmitting and receiving signals through the first array antenna ANT1, the first and second power amplifiers connected to the first and second transmission/ reception units 1251 and 1252 are maintained in the ON state. In this case, even if a flip event occurs, signals will not be transmitted and received through the third and fourth array antennas ANT3 and ANT4 disposed on the upper and lower sides of the electronic device. Accordingly, the first and second power amplifiers connected to the first and second transceivers 1251 and 1252 may be maintained in an ON state, and the third transceiver 1253 may be maintained in an OFF state. Accordingly, even when the beam scanning operation is not performed when the flip event occurs, the power consumption of the power amplifier can be reduced, and a stable operation of the power amplifier can be ensured in a data communication state between the base station and the terminal (UE).

Meanwhile, as described above, when the antenna module is switched, data communication can be performed directly through a specific beam without a beam scanning operation. In this regard, when the flip event occurs in the left and right rotation direction, the control unit 1400 can transmit the beam ID as follows. Accordingly, the controller 1400 transfers the beam ID of the second array antenna ANT2 corresponding to the beam ID of the first array antenna ANT1 to the second transceiver circuit 1252 through the IFIC 1300 before the flip event occurs. I can deliver.

Meanwhile, when the signal quality is low even during data communication directly through a specific beam without the beam scanning operation, the beam scanning operation may be performed again. In this regard, the controller 1400 may perform the following operation when the quality of a signal from the base station through a beam corresponding to the beam ID of the second array antenna ANT2 is less than or equal to a threshold value. Accordingly, the control unit 1400 controls the second transceiver circuit 1252 to perform a beam scanning operation for transmitting and receiving signals through the optimal beam of the second array antenna ANT2 when the quality of the signal is less than the threshold. can do.

Meanwhile, in order to solve the problem that data cannot be transmitted and received during the beam scanning process, the beam scanning process may be performed through another array antenna while transmitting and receiving data through one array antenna. To this end, while controlling the second transceiver circuit 1252 to transmit and receive signals to and from the base station through a beam corresponding to the beam ID of the second array antenna ANT2, the optimum for the first array antenna ANT1 Beam search can be performed. In this case, there is an advantage in that data communication is possible through the beam ID of the second array antenna ANT2 corresponding to the beam ID updated through the optimal beam search for the first array antenna ANT1.

In this regard, the first transmission/reception unit circuit 1251 may be controlled so that the beam scanning process for searching for an optimal beam for the first array antenna ANT1 is performed with a second base station that is not a corresponding base station but is an adjacent base station.

In the above, a method of switching an array antenna according to whether or not a motion occurs according to rotation of an electronic device according to an aspect of the present invention has been described. Hereinafter, a method of switching an array antenna according to whether a flip event occurs in an electronic device according to another aspect of the present invention will be described. Meanwhile, as described above, a description of a method of switching array antennas depending on whether or not motion occurs may be applied to the following.

Meanwhile, referring to FIGS. 7, 11 and 12, the electronic device includes a plurality of array antennas including first to third array antennas ANT1 to ANT3 and a baseband processor 1400. In addition, the electronic device further includes a transmission/reception unit circuit 1250, an application processor (AP) 1500, and a sensor unit 1600.

The plurality of array antennas ANT1 to ANT3 are configured to be disposed at different positions of the electronic device. Specifically, the first array antenna ANT1 is disposed on one of four side surfaces forming the electronic device, and the second array antenna ANT2 is disposed on the other side opposite to the one side. I can. Meanwhile, the third array antenna ANT3 may be disposed on the rear side or another side of the electronic device.

Meanwhile, the transceiver circuit 1250 may control the first to third antenna modules to transmit and receive signals through one of the first to third array antennas ANT1 to ANT3. At this time, the baseband processor 1400 may determine whether a flip event in which the positions of the front and rear surfaces are changed and a rotation direction through the sensor unit 1600 occur.

Specifically, the baseband processor 1400 controls the transceiver circuit 1250 to transmit and receive signals to and from the base station through the first array antenna ANT1, and whether a flip event has occurred through the sensor unit 1600 Can judge. In addition, the baseband processor 1400 may control the transceiver circuit 1250 to transmit and receive signals through the second array antenna ANT2 when it is determined that the flip event occurs in the left and right rotation direction.

Meanwhile, the application processor (AP) 1500 is configured to control the baseband processor 1400 and the sensor unit 1600. In this case, the baseband processor 1400 controls the first transceiver circuit 1251 to transmit and receive signals through the first array antenna ANT1 based on the control information received from the base station. In addition, by performing synchronization with the AP 1500, direction information in which the electronic device is disposed may be identified. In addition, based on the direction information, a transmission/reception unit circuit, that is, a second transmission/reception unit circuit, to transmit and receive signals through an optimal beam of the first array antenna ANT1 or the second array antenna ANT2 ( 1252) can be controlled.

Meanwhile, the baseband processor 1400 has an advantage of being able to switch beamforming according to an interrupt message associated with a flip event. In this regard, the baseband processor 1400 may receive an interrupt message from the sensor unit 1600 when a flip event occurs in the horizontal direction. Also, when receiving the interrupt message, the baseband processor 1400 may control a transmission/reception unit circuit, that is, a second transmission/reception unit circuit 1252 to transmit and receive signals through the second array antenna ANT2. In this case, the beam of the second array antenna ANT2 may be determined as a beam corresponding to the beam ID of the first array antenna ANT1 according to the flip event.

In the above, a method of performing beamforming using sensor information in an electronic device having an array antenna according to the present invention has been described. A wireless communication system including a base station and an electronic device including an array antenna that performs beamforming using such sensor information will be described as follows. In this regard, FIG. 15 illustrates a block diagram of a wireless communication system to which the methods proposed in the present specification can be applied.

Referring to FIG. 15, a 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 the base station, and the second communication device may represent the terminal (or the first communication device may represent the terminal, and the second communication device may represent the base station).

A base station (BS) is a fixed station, Node B, evolved-NodeB (eNB), Next Generation NodeB (gNB), base transceiver system (BTS), access point (AP), general gNB (gNB). NB), 5G system, network, AI system, RSU (road side unit), can be replaced by terms such as robot. In addition, the terminal may be fixed or mobile, and 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 with terms such as.

The first communication device and the second communication device are a processor (processor, 911,921), memory (memory, 914,924), one or more Tx/Rx radio frequency modules (915,925), Tx processors (912,922), Rx processors (913,923). , Antennas 916 and 926. The processor implements the previously salpin functions, processes and/or methods. More specifically, in the DL (communication from the first communication device to the second communication device), higher layer packets from the core network are provided to the processor 911. The processor implements the functions of the L2 layer. In the DL, the processor provides multiplexing between logical channels and transport channels and radio resource allocation to the second communication device 920, and is responsible for signaling to the second communication device. The 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 is mapped to an OFDM subcarrier, multiplexed with a reference signal (RS) in the time and/or frequency domain, and uses Inverse Fast Fourier Transform (IFFT). These are combined together to create a physical channel carrying a time domain OFDMA symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Each spatial stream may be provided to a different antenna 916 through a separate Tx/Rx module (or transceiver 915). Each Tx/Rx module can modulate the RF carrier with each spatial stream for transmission. In the second communication device, each Tx/Rx module (or transceiver 925) receives a signal through each antenna 926 of each Tx/Rx module. Each Tx/Rx module restores information modulated with an RF carrier and provides the information to the receive (RX) processor 923. The RX processor implements a variety of layer 1 signal processing functions. The RX processor may perform spatial processing on the information to recover any spatial stream destined for the second communication device. If multiple spatial streams are directed to the second communication device, they can be combined into a single OFDMA symbol stream by multiple RX processors. The RX processor transforms the OFDMA symbol stream from time domain to frequency domain using Fast Fourier Transform (FFT). The frequency domain signal contains a separate OFDMA symbol stream for each subcarrier of the OFDM signal. The symbols and reference signal on each subcarrier are reconstructed and demodulated by determining the most probable signal constellation 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 restore 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 (communication from the second communication device to the first communication device) is handled at the first communication device 910 in a manner similar to that described with respect to the receiver function at the second communication device 920. Each Tx/Rx module 925 receives a signal through 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. The memory may be referred to as a computer-readable medium.

Meanwhile, in an electronic device having such an array antenna, the technical effect of a method of performing beamforming using sensor information will be described as follows.

According to the present invention, there is an advantage in that it is possible to provide a sensor-based array antenna selection method in consideration of movement and rotation states of an electronic device.

In addition, according to the present invention, even when the electronic device moves or rotates, there is an advantage that communication can be performed with the base station with the optimal array antenna and the optimal beam without a separate beam scanning process.

In addition, according to the present invention, even when the electronic device moves or rotates, a separate beam scanning process is not requested to the base station, thereby reducing the burden of the base station providing the optimal beam to the terminal.

In addition, according to the present invention, even when the electronic device moves or rotates, there is an advantage that seamless communication with the base station is possible.

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

In relation to the present invention described above, designing and driving a specific component including a control unit in an electronic device having an array antenna that performs beamforming using sensor information is a computer-readable code on a medium in which a program is recorded. It is possible to implement. The computer-readable medium includes all types of recording devices storing data that can be read by a computer system. Examples of computer-readable media include HDD (Hard Disk Drive), SSD (Solid State Disk), SDD (Silicon Disk Drive), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. There is also a carrier wave (eg, transmission over the Internet). In addition, the computer may include a control unit 180, 911, 912, 913, 921, 922, 923, 1250, 1400, 1500 of the terminal. Therefore, the detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (20)

1. In an electronic device,

   First and second array antennas disposed at different positions of the electronic device; And

   During communication through the first array antenna, the electronic device includes a control unit for determining whether a motion occurs according to rotation with respect to at least one axis, and performing communication through the second array antenna when the motion occurs, Electronics.
2. The method of claim 1,

   The first array antenna is disposed on one of four side surfaces forming the electronic device, and the second array antenna is disposed on the other side opposite to the one side.
3. The method of claim 2,

   The control unit,

   Determine whether or not a flip event in which the positions of the front and the rear are changed and a rotation direction through a sensor unit,

   When the flip event occurs in the first rotation direction, the first array antenna controls to transmit and receive signals to and from the base station through the second array antenna,

   When the flip event occurs in a second rotation direction, controlling to transmit and receive signals with the base station through one of the first array antenna and the second array antenna.
4. The method of claim 2,

   A third array antenna disposed on a rear surface or another side of the electronic device; And

   Further comprising a transceiver circuit (transceiver circuit) for controlling a signal to be transmitted and received through one of the first to third array antenna,

   The control unit,

   The transmission and reception unit circuit is controlled to transmit and receive signals to and from a base station through the first array antenna, and to transmit and receive the signal through the second array antenna when the flip event occurs in the first rotation direction. An electronic device that controls a transmission/reception unit circuit.
5. The method of claim 4,

   Further comprising an application processor (AP) configured to control the control unit and the sensor unit,

   The control unit,

   Based on the control information received from the base station, controlling the first array antenna to transmit and receive the signal through the first array antenna,

   Synchronize with the AP to identify direction information in which the electronic device is disposed,

   Based on the direction information, the electronic device for controlling the transmission and reception unit circuit to transmit and receive the signal through an optimal beam of the first array antenna or the second array antenna.
6. The method of claim 5,

   The control unit,

   When the flip event occurs in the first rotation direction, an interrupt message is received from the sensor,

   When receiving the interrupt message, controlling the transceiver circuit to transmit and receive the signal through the second array antenna,

   The electronic device, wherein the beam of the second array antenna is determined as a beam corresponding to the beam ID of the first array antenna according to the flip event.
7. The method of claim 6,

   The control unit,

   Controlling the transmission/reception unit circuit to perform a beam scanning operation to transmit and receive the signal through the optimal beam of the second array antenna,

   An electronic device for controlling the transmission/reception unit circuit to transmit and receive the signal from the base station through the optimal beam of the second array antenna.
8. The method of claim 7,

   When the flip event occurs in the second rotation direction, a second interrupt message is received from the sensor,

   When receiving the second interrupt message, controlling the transmission and reception unit circuit to transmit and receive the signal through the second array antenna or the third array antenna according to a rotation angle.
9. The method of claim 8,

   The control unit,

   Controlling the transmission/reception unit circuit to perform a beam scanning operation to transmit and receive the signal through an optimal beam of the third array antenna,

   An electronic device for controlling the transmission/reception unit circuit to transmit and receive the signal from the base station through the optimal beam of the third array antenna.
10. The method of claim 8,

    The control unit,

    When receiving the second interrupt message, controlling the transceiver circuit to transmit and receive the signal through the first array antenna and the third array antenna,

    An electronic device for controlling the transmission/reception unit circuit to transmit and receive the signal from the base station through the optimal beam of the first array antenna and the optimal beam of the third array antenna.
11. The method of claim 4,

    The transmission/reception unit circuit includes first to third transmission/reception unit circuits respectively controlling the first to third array antennas,

    Further comprising an IFIC (Intermediate Frequency Integrated Chip) connected to the first to third transceiving unit circuits and controlling the signal to be transmitted and received through at least one of the first to third transceiving unit circuits,

    The IFIC is,

    When the flip event occurs in a horizontal rotation direction, the first transmission/reception circuit controls the transmission and reception of the signal through the second transmission/reception circuit.
12. The method of claim 11,

    The IFIC is,

    When the flip event occurs in the left and right rotation direction, the first and second power amplifiers connected to the first transmission/reception unit circuit are turned off, and the power amplifier connected to the second transmission/reception unit circuit is turned on. An electronic device that controls a transmission/reception unit.
13. The method of claim 11,

    The control unit,

    When the flip event occurs in the horizontal direction,

    Before the flip event occurs, the beam ID of the second array antenna corresponding to the beam ID of the first array antenna is transmitted to the second transceiver circuit through the IFIC.
14. The method of claim 13,

    The control unit,

    When the quality of the signal from the base station through the beam corresponding to the beam ID of the second array antenna is less than or equal to a threshold, performing a beam scanning operation for transmitting and receiving the signal through the optimal beam of the second array antenna An electronic device that controls the second transceiver circuit.
15. The method of claim 12,

    The control unit,

    A team scanning process of searching for an optimal beam of the first array antenna while controlling the second transceiver circuit to transmit and receive the signal to and from the base station through a beam corresponding to the beam ID of the second array antenna is provided. 2, the electronic device for controlling the first transceiver circuit to perform with the base station.
16. In an electronic device,

    First and second array antennas disposed at different positions of the electronic device; And

    Control to receive a first signal through the first array antenna,

    A baseband processor configured to determine whether a flip event in which the positions of the front and rear surfaces of the electronic device are changed, and control to receive a second signal through the second array antenna when the flip event occurs , Electronics.
17. The method of claim 16,

    The first array antenna is disposed on one of four side surfaces forming the electronic device, and the second array antenna is disposed on the other side opposite to the one side,

    A third array antenna disposed on a rear surface or another side of the electronic device; And

    Further comprising a transceiver circuit (transceiver circuit) for controlling a signal to be transmitted and received through one of the first to third array antenna,

    The baseband processor,

    An electronic device that determines whether or not a flip event in which the positions of the front and rear surfaces are changed and a rotation direction through a sensor unit occur.
18. The method of claim 17,

    The baseband processor,

    Controls the transmission/reception unit circuit to transmit and receive signals to and from the base station through the first array antenna, and transmits the signal through the second array antenna when it is determined that the flip event has occurred in the horizontal direction through the sensor unit And controlling the transmission/reception unit circuit to receive.
19. The method of claim 17,

    Further comprising an application processor (AP) configured to control the baseband processor and the sensor unit,

    The baseband processor,

    Based on the control information received from the base station, controlling a first transceiver circuit to transmit and receive the signal through the first array antenna,

    Synchronize with the AP to identify direction information in which the electronic device is disposed,

    Based on the direction information, the electronic device for controlling the transmission and reception unit circuit to transmit and receive the signal through an optimal beam of the first array antenna or the second array antenna.
20. The method of claim 17,

    The baseband processor,

    When the flip event occurs in the left and right rotation direction, an interrupt message is received from the sensor unit,

    Upon receiving the interrupt message, controlling the transceiver circuit to transmit and receive the signal through the second array antenna,

    The electronic device, wherein the beam of the second array antenna is determined as a beam corresponding to the beam ID of the first array antenna according to the flip event.

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