WO2021090984A1 - Electronic apparatus supporting dual connection and method for controlling same - Google Patents

Abstract

The present invention relates to an electronic apparatus supporting both 4G communication and 5G communication, the electronic apparatus being characterized by including: a plurality of antennas which receive signals that are a mixture of 4G signals and 5G signals; a plurality of Low Noise Amplifiers (LNAs) which are formed between each of the antennas and a combination unit that combines the received signals, and amplify the received signals; an RFIC which separates the signals received through the plurality of antennas into the 4G signals and the 5G signals; and a modem which converts the signal strengths of the separated signals to the signal strengths of signals of the same bandwidth, and determines the amplification gains of the plurality of LNAs on the basis of at least one of the converted signal strengths.

Description

Electronic devices supporting dual connection and control method of the electronic devices

The present invention relates to an electronic device supporting both 4G communication and 5G communication.

Recently, various electronic devices including mobile terminals can use services through 4G networks and 5G networks using not only LTE (Long Term Evolution, hereinafter 4G) communication technology but also NR (New Radio, hereinafter 5G) communication technology.

In the case of an electronic device capable of simultaneously supporting 4G communication and 5G communication, the electronic device can receive both a signal according to the 4G communication method (hereinafter referred to as 4G signal) and a signal according to the 5G communication method (hereinafter, referred to as 5G signal) from the base station. I can. And when a signal in which a 4G signal and a 5G signal are mixed is received, the RFIC of the electronic device is separated into a signal according to each communication method and performs ADC (Analog Digital Converting), and the modem of the electronic device is converted from the RFIC. Digital demodulation can be performed by receiving a digital signal.

Meanwhile, in the case of a conventional electronic device capable of simultaneously supporting 4G communication and 5G communication, a 4G RFIC receiving a 4G signal and a 5G RFIC receiving a 5G signal are separately provided. In the case of having a structure in which 4G RFIC and 5G RFIC are separately provided, the received signal must be separated into 4G and 5G signals and input to each RFIC. For this purpose, in the case of conventional electronic devices, the primary An LNA amplifying the received signal and a splitter for separating the amplified signal are provided.

Meanwhile, the 4G signal and 5G signal separated through the splitter are input to the RFIC according to each communication method. Then, 4G RFIC and 5G RFIC amplify the input signal according to the gain according to each communication method through an LNA that can adjust the gain variably (e.g., gain step LNA), and amplify the amplified signal. ADC (Analog Digital Converting) can be input to the modem. The modem can then demodulate (eg, digitally demodulate) the signal received from the 4G RFIC or 5G RFIC.

Meanwhile, in the case of conventional electronic devices each having 4G RFIC and 5G RFIC, there is a problem that two RFICs must be provided, and since the received signal must be separated and input to each RFIC, the received signal is amplified for the signal separation. There is a problem of having to have an LNA.

As a solution to this problem, current electronic devices have a structure including an integrated RFIC capable of receiving both 4G signals and 5G signals. Electronic devices equipped with integrated RFICs, when 4G signals and 5G signals are received, amplify the signal through a gain step LNA (Gain Step LNA), and the amplified signal is received by the integrated RFIC into 4G signals and 5G signals. Make it possible to distinguish.

As described above, in the case of an electronic device having an integrated RFIC, the number of LNAs can be reduced, and the number of RFICs can be reduced, so that the size and volume of hardware can be reduced, and control is simple. However, in the case of an integrated RFIC (the RFIC referred to below will be referred to as the integrated RFIC), it is necessary to separate the 4G signal and the 5G signal and amplify each signal for ADC through a single amplification. There is a problem in that the amplification gain of the gain stage LNA should be determined in consideration of all 5G signals.

The present invention is an electronic device having one RFIC for determining an amplification gain suitable for both a received 4G signal and a 5G signal and amplifying a received signal according to the determined amplification gain. And to provide a method for controlling the electronic device.

In addition, the present invention provides an electronic device having one RFIC capable of determining an LNA amplification gain suitable for all of the received signals according to the received signal strength of received signals having different bandwidths, and a control method of the electronic device. For that purpose.

According to an aspect of the present invention in order to achieve the above or other objects, an electronic device according to an embodiment of the present invention includes a plurality of antennas for receiving a signal mixed with a 4G signal and a 5G signal, and synthesizing the received signals. A plurality of LNAs (Low Noise Amplifiers) formed between the synthesis unit and each antenna, amplifying the received signals, RFICs for separating signals received through the plurality of antennas into 4G signals and 5G signals, and the separation And a modem for converting the signal strengths of the converted signals into signal strengths of signals according to the same bandwidth, and determining an amplification gain of the plurality of LNAs based on at least one of the converted signal strengths.

In an embodiment, the modem determines an amplification gain of the plurality of LNAs based on any one of the converted signal strengths, and the reference signal strength is the converted signal strengths It is characterized in that they differ from each other according to the state of the electric field around the electronic device determined based on.

In an embodiment, the modem determines an amplification gain of the plurality of LNAs based on a signal strength having a high value among the converted signal strengths when the electric field around the electronic device is a strong electric field, and the electronic device When the surrounding electric field is a weak electric field, an amplification gain of the plurality of LNAs is determined based on a signal strength having a lower value among the converted signal strengths.

In one embodiment, the modem is an acceptance level range having a range of a signal level greater than or equal to a signal level capable of analog digital converting (ADC) in the RFIC and less than an intensity that causes circuit damage to the RFIC. ), and when the electric field around the electronic device is a strong electric field, the plurality of the converted signal strengths are amplified to be less than the upper limit of the acceptance level range and above the intermediate value of the acceptance level range. When the amplification gain of the LNA of is determined, and when the electric field around the electronic device is a weak electric field, the signal strength having a lower value among the converted signal strengths is equal to or greater than the lower limit of the acceptance level range and less than the middle value of the acceptance level range. It characterized in that the amplification gains of the plurality of LNAs are determined to be amplified.

In an embodiment, the modem may determine an electric field around the electronic device as a strong electric field or a weak electric field according to whether an average value of the converted signal strengths is greater than or equal to a preset signal strength.

In an embodiment, the modem sets the acceptance level range having a range of signal levels greater than or equal to a signal level capable of analog digital converting (ADC) in the RFIC and less than an intensity that causes circuit damage to the RFIC, and And determining the amplification gains of the plurality of LNAs according to an average value of the converted signal intensities and an intermediate value between an upper limit value and a lower limit value of the acceptance level range.

In one embodiment, the modem converts the signal strength of the 4G signal into a signal strength according to the bandwidth of the 5G signal or converts the signal strength of the 5G signal to the 4G signal according to a communication method in which the electronic device is connected to the base station. It is characterized by converting the signal strength according to the bandwidth.

In an embodiment, the modem includes a first received signal sensitivity corresponding to a bandwidth of a first signal as a reference among the 4G signal and a 5G signal, and a second received signal sensitivity corresponding to a bandwidth of a second signal different from the first signal. 2 Compensating the difference in sensitivity of the received signal to the signal strength of the second signal to calculate the signal strength of the second signal having the bandwidth of the first signal, the first received signal sensitivity and the second received signal sensitivity , The bandwidth of the first signal and the bandwidth of the second signal are determined according to Equation 1 below.

[Equation 1]

The unit of the received signal sensitivity is dB (desiBel), and the BW means a bandwidth (BandWidth).

In an embodiment, the modem may calculate the first received signal sensitivity and the second received signal sensitivity by further reflecting a signal to noise ratio in Equation 1 above.

In an embodiment, the signal-to-noise ratio is determined according to a modulation method and a code rate corresponding to each of the 4G signal and the 5G signal.

In one embodiment, the modem is characterized in that the first received signal sensitivity and the second received signal sensitivity are calculated by further reflecting a noise figure of the RFIC.

In an embodiment, the 4G signal and the 5G signal are preset reference signals.

According to an aspect of the present invention in order to achieve the above or other objects, a method for controlling an electronic device according to an embodiment of the present invention includes a first method in which the plurality of antennas respectively receive a signal in which a 4G signal and a 5G signal are mixed. A second step of amplifying the signal received from each antenna according to a preset amplification gain by each LNA connected to each antenna, and the RFIC separating each of the amplified signals from each LNA into a 4G signal and a 5G signal A third step, wherein the modem, for each antenna, determines a first signal as a reference among the separated signals, and converts the signal strength of the second signal according to the bandwidth of the first signal. A fifth step in which the modem, for each antenna, determines an amplification gain of an LNA corresponding to each antenna based on at least one of a signal strength of the first signal and a signal strength of the converted second signal; and And a sixth step of amplifying a signal received from each antenna by each of the plurality of LNAs according to an amplification gain determined by the modem.

In an embodiment, in the fifth step, the modem, for each antenna, determines an electric field state based on the signal strength of the first signal and the converted second signal. And, when the determined electric field state is a strong electric field, a 5-th for determining an amplification gain of an LNA corresponding to each antenna based on a higher value of the signal strength of the first signal and the signal strength of the converted second signal. Step 2 and, when the determined electric field state is a weak electric field, determining an amplification gain of an LNA corresponding to each antenna based on a lower value of the signal strength of the first signal and the signal strength of the converted second signal It characterized in that it includes steps 5-3.

In an embodiment, in the fourth step, based on Equation 1 below, the reception signal sensitivity according to the bandwidth of the first signal and the second reception signal sensitivity according to the bandwidth of the second signal are calculated. Step 4-1, and converting the signal strength of the second signal according to the bandwidth of the first signal by compensating the difference between the sensitivity of the first received signal and the sensitivity of the second received signal to the signal strength of the second signal. It characterized in that it comprises a step 4-2.

[Equation 1]

The unit of the received signal sensitivity is dB (desiBel), and the BW means a bandwidth (BandWidth).

The effects of the electronic device and its control method according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, the present invention converts a 4G signal and a 5G signal having different bandwidths into signals according to the same bandwidth, and based on the received signal strength of each of the signals converted into signals of the same bandwidth. By determining the LNA amplification gain, there is an effect that an electronic device having one RFIC can determine an LNA amplification gain suitable for both 4G signals and 5G signals having different bandwidths.

In addition, the present invention determines whether the electric field around the electronic device is a strong electric field or a weak electric field based on the received signal strength of each signal converted into a signal of the same bandwidth, and determines the LNA amplification gain differently according to the determined electric field state. By doing so, there is an effect that an appropriate LNA amplification gain can be determined according to the electric field state around the electronic device.

1A is a block diagram illustrating an electronic device related to the present invention.

1B and 1C are exemplary views as viewed from different directions of an example of an electronic device related to the present invention.

2 is a block diagram showing a configuration of a wireless communication unit of an electronic device operable in a plurality of wireless communication systems in the electronic device related to the present invention.

3 is a conceptual diagram illustrating a part of a wireless communication unit including a part of an RFIC and a part of an antenna in an electronic device related to the present invention.

4 is an exemplary diagram illustrating examples in which a modem converts signals having different bandwidths into signals having the same bandwidth in an electronic device related to the present invention.

5 is a flowchart illustrating an operation process of controlling an amplification gain of an LNA based on the strength of signals having different bandwidths by the modem of an electronic device related to the present invention.

6 is a flowchart illustrating an operation process of differently controlling an amplification gain of an LNA according to an electric field state around the electronic device by the modem of the electronic device according to the present invention.

7 is an exemplary diagram illustrating examples of controlling an amplification gain of an LNA according to the strength of received signals when the peripheral electric field of an electronic device according to an embodiment of the present invention is a strong electric field.

8 is an exemplary diagram illustrating examples of controlling an amplification gain of an LNA according to the strength of received signals when the peripheral electric field of an electronic device according to an embodiment of the present invention is a weak electric field.

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 constituent elements 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 thereof 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 changes 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. The above 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. It 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.

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, ultrabook, wearable device, for example, smartwatch, smart glass, head mounted display (HMD), etc. 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 signages, except when applicable only to mobile terminals. .

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 diagrams 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. ) And the like. The components shown in FIG. 1A are not essential for implementing the electronic device, and thus the 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 is, 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 to 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 multi-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. At this time, 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 of 6 GHz or less, may be used.

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

Meanwhile, regardless of the 5G frequency band, in a 5G communication system, a larger number of multiple input multiple outputs (MIMO) can 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.

On the other hand, 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 -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 using at least one of (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies. This, short-range communication module 114, the electronic device 100 and the wireless communication system, the electronic device 100 and other electronic devices, or different from the electronic device 100 through a short-range wireless communication network (Wireless Area Networks). Wireless communication between networks in which the electronic device 100 or an external server is located may be supported. 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.

On the other hand, 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 representative examples thereof include a GPS (Global Positioning System) module or a WiFi (Wireless Fidelity) module. For example, if an electronic device utilizes a GPS module, the position of the electronic device may be obtained 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 115 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 115 is a module used to acquire the location (or current location) of the electronic device, and is not limited to a module that directly calculates or acquires the location of the electronic device.

Specifically, if the electronic device utilizes the 5G wireless communication module 112, the location of the electronic device may be obtained based on the information of the 5G wireless communication module and the 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 a display unit 151, an audio output unit 152, a hap tip module 153, and a 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. Such a 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 the user.

The interface unit 160 serves as a passage for 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 instructions. 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 the operation related to the application program, the controller 180 generally controls the overall operation of the electronic device 100. The controller 180 may provide or process appropriate information or functions to 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 discussed with reference to 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.

Hereinafter, the controller 180 that controls the overall operation of the electronic device will be referred to as the terminal controller 180.

The power supply unit 190 receives external power and internal power under the control of the terminal 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. Hereinafter, the power supply unit 190 for supplying power to each component included in the electronic device 100 will be referred to as a terminal power supply unit 190.

At least some of the respective 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. In addition, 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 can 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 (eg, 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 detachable 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, some of the side surfaces 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 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, respectively.

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 terminal 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 playback sounds. It can be implemented in the form of ).

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, e-mail reception, and information reception through an application. When the user's event confirmation is detected, the terminal 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 a 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 manipulated 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 manipulation 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 manipulated 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 terminal 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 at a plurality of locations and configured to receive stereo sound.

The interface unit 160 becomes a path 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 another device (eg, earphone, external speaker), 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 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 electronic device 100. 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 electronic device 100 may be implemented to support MIMO. In addition, when the 5G wireless communication module 112 operates in a millimeter wave (mmWave) band, as each of the plurality of antennas is implemented as an array antenna, a plurality of array antennas may be disposed in an electronic device.

The terminal body is provided with a terminal power supply unit 190 (refer to FIG. 1A) for supplying power to the electronic device 100. The terminal power supply unit 190 may include a battery 191 that is built into 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 apparent 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 operable 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 270 and an application processor 280. Here, the modem (Modem, 270) and the application processor (AP, 280) may be physically implemented in one chip, and may be implemented in a logically and functionally separated form. However, the present invention is not limited thereto and may be implemented in the form of a physically separated chip according to an application.

Meanwhile, the electronic device includes a plurality of low noise amplifiers (LNAs) 261 to 264 in the receiver. Here, the first power amplifier 210, the second power amplifier 220, the RFIC 250, and the plurality of low-noise amplifiers 261 to 264 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 270 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 in 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 may be logically and functionally separated, and may be physically implemented on a single chip.

On the other hand, the application processor (AP, 280) is configured to control the operation of each component of the electronic device. Specifically, the application processor (AP, 280) may control the operation of each component of the electronic device through the modem 270.

For example, the application processor (AP, 280) may control the modem 270 through a power management IC (PMIC) for low power operation of an electronic device. Accordingly, the modem 270 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 an idle mode, the application processor (AP) 280 may control the RFIC 250 through the modem 270 as follows. For example, if the electronic device is in an 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 270 through the RFIC. 250 can be controlled.

According to another embodiment, when the electronic device is in a low power mode, the application processor (AP) 280 may control the modem 270 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) 280 may control the modem 270 to enable wireless communication with the lowest power. Accordingly, even if the throughput is slightly sacrificed, the application processor (AP) 280 may control the modem 270 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 power of the electronic device is equal to or greater than a threshold, the modem 270 may be controlled to select an optimal wireless interface. For example, the application processor (AP, 280) may control the modem 270 to receive data 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) 280 may receive information on the remaining battery capacity from the PMIC and information on available radio resources from the modem 270. Accordingly, if the remaining battery capacity and available radio resources are sufficient, the application processor (AP, 280) may control the modem 270 and the RFIC 250 to receive data 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 a single transmitting/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 parts can be controlled by the integrated transmission/reception unit, the front end parts can be integrated more efficiently than when the transmission/reception system is separated for each communication system.

In addition, when the communication systems are separated, 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 may operate in the 4G band and the other may operate in the millimeter wave band. have.

On the other hand, by integrating the transmitting and receiving unit and the receiving unit, it is possible to implement two different wireless communication systems with one antenna using a transmission/reception combined antenna. In this case, 4x4 MIMO can be implemented using 4 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, a signal of a transmission band transmitted through the first and second power amplifiers 210 and 220 may be 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 may be received by the low noise amplifiers 261 and 264 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) 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 270 corresponding to a control unit. In this case, the RFIC 250 and the modem 270 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 270 may be implemented as physically separate circuits. Alternatively, the RFIC 250 and the modem 270 may be physically logically or functionally divided into one circuit.

The modem 270 may perform control and signal processing for transmission and reception of signals through different communication systems through the RFIC 250. The modem 270 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 270 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. In addition, the RFIC 250 may control receiving circuits including the first to fourth low noise amplifiers 261 to 264 to receive 4G signals or 5G signals in a specific time period.

On the other hand, the detailed operation and function of the electronic device according to the present invention provided with the multiple transmission and reception system as shown in FIG. 2 will be described below.

3 is an example of controlling an amplification gain of an LNA based on a received signal when a signal is received by a first antenna (eg, Ant 1) among a plurality of antennas disposed in the electronic device 100 related to the present invention. For illustrative purposes, a conceptual diagram showing a part of the RFIC 250 and a part of the wireless communication unit 110 including the first antenna Ant 1.

Referring to FIG. 3, the first antenna Ant 1 may receive a 4G signal and a 5G signal from a 4G base station and a 5G base station located around the electronic device 100, respectively. Then, the 4G signal and the 5G signal are mixed and received through the first antenna Ant 1, and may be input to the LNA 261 through the duplexer 231, the filter 232, and the switch 233.

Meanwhile, when there is no control of the modem 270, the LNA 261 may amplify a received signal according to a preset gain. In this case, the preset gain may be set to amplify the received signal with sufficient strength to separate the 4G signal and the 5G signal.

Then, the amplified received signal may be input to the RFIC 250, and may be separated into a 4G signal 301 and a 5G signal 302 through a splitter 300 provided in the RFIC 250. Here, when the first antenna (Ant1) is formed to receive the 5G signal (B41 PRX signal, 301) of the first channel, the 4G signal received together with the 5G signal of the first channel is in the reverse order of the 5G signal, that is, the last channel. It can be classified as a 4G signal. In this case, if four antennas are disposed in the electronic device 100 as shown in FIG. 2, the 4G signal may be a 4G signal (n41 3rd signal 302) of a fourth channel. In addition, the 4G signal 301 and the 5G signal 302 separated through the splitter 300 may be input to the modem 270.

Meanwhile, the modem 270 may detect the received signal strength of the input 4G signal 301 and 5G signal 302. Here, the 4G signal 301 and the 5G signal 302 may be preset reference signals. In this case, the strength of the 4G signal 301 and the strength of the 5G signal 302 may be referred to as 4G Reference Signal Received Power (RSRP) and 5G RSRP, respectively.

Meanwhile, the 4G signal 301 and the 5G signal 302 may be signals having different bandwidths, respectively. In the case of a 4G signal 301 that can have a bandwidth of 10-20Mhz, 10MHz. In the case of a 5G signal 302 that has any one of 15 MHz and 20 MHz bandwidth, but can have a bandwidth ranging from 10 MHz to 100 MHz, 10 MHz. This is because it can have any one of 15MHz, 20MHz, 40MHz, 60MHz, 80MHz, 90MHz, 100MHz bandwidth. In this case, in the case of a signal having a narrow bandwidth, the received signal strength may be weaker than that of a signal having a low bandwidth. This is because the wider the bandwidth, the more the signal can be distributed.

Accordingly, when the 4G signal 301 and the 5G signal 302 having different bandwidths are input, the modem 270 may convert the strength of the input signals into signal strengths of signals having the same bandwidth. To this end, the modem 270 calculates the sensitivity of the signal strength (received signal sensitivity) according to the difference in bandwidth based on an equation such as the following [Equation 1], and the calculated signal sensitivity is inputted to the 4G signal 301 The intensity of the input 4G signal 301 or the 5G signal 302 may be converted into the intensity of a signal having a specific bandwidth by reflecting on at least one of the 5G signal 302 and the 5G signal 302. Equation 1 may be determined according to a Boltzmann constant, a temperature of a preset receiver (eg, a wireless communication unit), and a bandwidth (BW, BandWidth).

Here, BW means bandwidth, and the unit of the received signal sensitivity is dB (desiBel).

Meanwhile, when the reception signal sensitivity according to each bandwidth is calculated according to Equation 1 above, it is as shown in Table 1 below.

Bandwidth	10 MHz	15MHz	20 MHz	40 MHz	50 MHz	60 MHz	80MHz		90MHz	100 MHz
Received signal sensitivity	70.0	71.8	73.0	76.0	77.0	77.8	79.0	79.5	80.0

Table 1 is a calculation of only the received signal sensitivities calculated according to each bandwidth of 5G, and according to Equation 1, the received signal sensitivity according to the bandwidths described in Table 1 as well as any number of smaller or larger bandwidths is Of course, it can be calculated.

Meanwhile, in Equation 1 described above, the received signal sensitivity was calculated by reflecting the Boltzmann constant and the temperature of a preset receiver (eg, wireless communication unit), but the received signal sensitivity is noise characteristics according to the hardware configuration of the wireless communication unit 110 ( NF (Noise Figure)) and signal-to-noise ratio (SNR) characteristics according to a signal modulation method and code rate may be further reflected. In this case, when the 5G signal 302 is a signal modulated by a Quadrature Amplitude Modulation (QAM) method, a signal-to-noise ratio corresponding to a code rate according to the QAM modulation method and the QAM modulation method may be further reflected. In this case, the sensitivity of the signal strength (received signal sensitivity) according to the difference in bandwidth may be calculated as shown in Equation 2 below.

Here, BW stands for BandWidth, the unit of the received signal sensitivity is dB (desiBel), NF (Noise Figure) is the noise characteristic of the receiver, and SNR (Signal to Noise Ratio) is the modulation method and code rate of the signal. Is the signal-to-noise ratio according to.

Meanwhile, the modem 270 converts the input signal strength into signal strengths of signals having the same bandwidth, so that only one of the 4G signal 301 and the 5G signal 302 separated by the splitter 300 Of course it can also be converted.

4 is an exemplary diagram illustrating examples in which the modem 270 converts signals having different bandwidths into signals having the same bandwidth in the electronic device 100 related to the present invention.

First, referring to FIG. 4(a), FIG. 4(a) shows an example of the received signal strengths 400 and 450 of the 4G signal 301 and the 5G signal 302 having different bandwidths. will be. When signals having different bandwidths are received as described above, the modem 270 may convert the 4G signal 301 and the 5G signal 302 into signal strengths of signals having the same condition, that is, the same bandwidth.

For example, the modem 270 may convert the strength 450 of the 5G signal 302 based on the bandwidth of the 4G signal 301 as shown in (b) of FIG. 4. In this case, the modem 270 is based on Table 1, the received signal sensitivity of the 5G signal 302 corresponding to the bandwidth of the 4G signal 301 and the 5G signal corresponding to the bandwidth of the 5G signal 302 ( It is possible to calculate the difference in the sensitivity of the received signal 302). In addition, the received signal strength of the 5G signal 302 may be compensated by the calculated difference. Accordingly, the signal strength 450 of the 5G signal 302 may be converted into a signal strength 450 in the case of having the same bandwidth as the bandwidth of the 4G signal 301.

For example, when the modem 270 receives a 4G signal having a bandwidth of 20Mhz and a 5G signal having a bandwidth of 60Mhz, based on Table 1, the strength of a 5G signal having a bandwidth of 60Mhz has a bandwidth of 20MHz. It can be converted to the strength of the 5G signal 302.

Considering this assuming that the signal strength is converted based on Equation 1, the reception signal sensitivity of the 5G signal having a bandwidth of 60 MHz in Table 1 is 77 dB, and the reception signal sensitivity of the 5G signal having a bandwidth of 20 MHz is 77 dB. It can be seen that it is. Accordingly, when the modem 270 converts the strength of a 5G signal having a bandwidth of 60 MHz to the strength of a 5G signal having a bandwidth of 20 MHz, the modem 270 may compensate for a difference of 4.8 (77.8-73 = 4.8) dB of the received signal sensitivity. In this case, the signal strength is changed from a signal having a wider bandwidth to a signal strength according to a narrower bandwidth, and the received signal sensitivity may be increased by a difference in the received signal sensitivity.

Conversely, the modem 270 may convert the signal strength 400 of the 4G signal 301 based on the bandwidth of the 5G signal 302 as shown in (c) of FIG. 4. In this case, the modem 270 calculates a difference between the received signal sensitivity corresponding to the bandwidth of the 5G signal 302 and the received signal sensitivity corresponding to the bandwidth of the 4G signal 301 based on Table 1, and the calculated It is possible to compensate for the received signal strength of the 4G signal 301 by the difference. Accordingly, the signal strength 400 of the 4G signal 301 may be converted into a signal strength 400 of a signal having the same bandwidth as the bandwidth of the 5G signal 302.

Meanwhile, unlike FIGS. 4B and 4C, the modem 270 uses the signal strength 400 of the 4G signal 301 and the signal strength 450 of the 5G signal 302 to determine the strength of a signal having a specific bandwidth. Of course, you can also convert them all. For example, when the 4G signal 301 is a signal having a bandwidth of 10Mhz and the 5G signal 302 is a signal having a bandwidth of 60Mhz, the signal strength of the 4G signal 301 is a signal having a bandwidth of 20MHz The intensity 400 may be converted, and the signal intensity of the 5G signal 302 may be converted into a signal intensity 450 in the case of having a bandwidth of 20 MHz.

When it is assumed that the signal strength is converted based on Equation 1, based on Table 1, the modem 270 has a reception signal sensitivity of 73 dB and a reception signal of 10 MHz when having a bandwidth of 20 MHz for a 4G signal. By compensating 3dB, which is a difference in sensitivity of 70dB, to the signal strength of the 4G signal, the signal strength of the 4G signal corresponding to the bandwidth of 20MHz can be calculated (because the bandwidth is increased, -3dB).

In addition, 4.8dB, which is the difference between the reception signal sensitivity of 77.8dB and the reception signal sensitivity of 20MHz, of 73dB when the 5G signal has a bandwidth of 60MHz is compensated for the signal strength of the 5G signal, and the signal strength of the 5G signal corresponding to the bandwidth of 20MHz. Can be calculated (+4.8dB since the bandwidth has decreased).

On the other hand, in the case of (d) of FIG. 4, it is necessary to convert both the 4G signal 301 and the 5G signal 302, whereas in the case of (b) and (c) of FIG. 4, the modem 270 is based on any one signal. By converting only the other signal, signal strengths of signals having different bandwidths may be converted into signal strengths corresponding to signals having the same bandwidth. In this case, by converting only one of the two signals, the signal strengths of the 4G signal 301 and the 5G signal 302 may be converted into signal strengths of signals having the same bandwidth. Accordingly, the 4G signal 301 and the 5G signal 302 can be converted into signal strengths of signals having the same bandwidth faster than the case of converting both (in the case of FIG. 4D).

On the other hand, the modem 270, as shown in (b) and (c) of Fig. 4, converts only the other signal based on any one signal to provide the 4G signal 301 and the 5G signal 302. In the case of converting the signal intensities of signals into signal intensities of signals having the same bandwidth, the signal to be the reference may be determined according to a wireless communication method to which the electronic device 100 is currently connected.

For example, when the electronic device 100 is currently performing wireless communication according to the 5G communication method, the modem 270 is set based on the 5G signal 302 and the signal strength of the 4G signal 301 is set to the 5G. It is possible to convert the signal strength of the signal according to the bandwidth of the signal 302. On the other hand, when the electronic device 100 is currently in a state in which wireless communication is performed according to the 4G communication method, the 4G signal 301 is set as a reference and the signal strength of the 5G signal 302 is adjusted to the bandwidth of the 4G signal 301. It can be converted into the signal strength of the corresponding signal.

On the other hand, when the signal strength of the 4G signal 301 and the signal strength of the 5G signal 302 are converted into the signal strengths of signals having the same bandwidth, the modem 270 is the LNA 261 based on the converted signal strengths. The amplification gain of can be determined. For example, the modem 270 may determine the amplification gain of the LNA 261 based on the average value of the converted signal intensities. Alternatively, the amplification gain of the LNA 261 may be determined based on any one of the converted signal intensities. In this case, an amplification gain of the LNA 261 may be determined based on a signal strength of a stronger signal or a signal strength of a weaker signal among the converted signal strengths. Then, the modem 270 transmits a gain control signal for controlling the LNA 261 to the LNA 261 according to the determined amplification gain, and the LNA 261 amplifies the received signal according to the determined amplification gain. The LNA 261 can be controlled so as to be.

Then, according to the amplification gain determined by the modem 270, the LNA 261 amplifies the received signal, and the splitter 300 separates the signal amplified by the LNA 261 into a 4G signal and a 5G signal. You can enter. In this case, if the amplification gain of the LNA 261 is sufficient, the ADC 310 can convert the input 4G signal or 5G signal into a digital signal, and the converted digital signal is output from the RFIC 250 to the modem 270. Can be entered.

Meanwhile, FIG. 3 illustrates only the process of controlling the amplification gain of the first LNA 261 connected to the first antenna Ant1, but the second LNA 262 connected to the second antenna Ant2 to the fourth antenna Ant4. Of course, the amplification gain of the fourth LNA 264 may also be controlled through the same or similar process as in FIG. 3.

Meanwhile, FIG. 5 shows an operation process of controlling the amplification gain of the LNA 261 by the modem 270 of the electronic device 100 related to the present invention based on the strength of signals having different bandwidths as described in FIG. 3. It is a flow chart shown.

Referring to FIG. 5, when the modem 270 of the electronic device 100 related to the present invention receives a mixed signal and the signal received through the antenna is separated into a 4G signal and a 5G signal through the splitter 300, , Separate 4G signals and 5G signals can be input. And it is possible to determine a bandwidth to compare the signal strength of the input signals (S500).

In step S500, the modem 270 may convert the signal strength of another signal based on the bandwidth of one signal. In this case, the modem 270 may determine the signal serving as the reference according to a wireless communication method to which the electronic device 100 is currently connected, or may determine a predetermined condition. Here, the preset condition may include an operating state of the electronic device 100 (eg, a function to be performed) or a current state of the electronic device 100 (eg, a battery state).

Alternatively, in step S500, the modem 270 may determine a preset specific bandwidth as a bandwidth to compare the signal strength.

In step S500, when a bandwidth to compare signal strengths is determined, the modem 270 determines the signal strength of at least one of the received signals having different bandwidths, the bandwidth of the reference signal or the signal strength according to the specific bandwidth. It can be converted to (S502). In this case, the signal strengths of the 4G signal and the 5G signal may be converted into signal strengths of signals having the same bandwidth.

Here, if the bandwidth determined in step S500 is determined as the bandwidth of any one signal set as the reference, the modem 270 receives according to the difference in the bandwidth of the signal strength of the signal not set as the reference based on Equation 1 above. By compensating for a difference in signal sensitivity, it is possible to convert the signal strength into a signal strength according to the bandwidth of the signal set as the reference.

On the other hand, if the bandwidth determined in step S500 is a predetermined specific bandwidth, the modem 270 compensates the signal strengths of each signal for differences in the sensitivity of the received signal according to the difference between the bandwidth of each signal and the specific bandwidth, The signal strength of the 4G signal and the signal strength of the 5G signal may be converted into signal strengths of signals according to the specific bandwidth.

Meanwhile, in step S502, when the signal strengths of the 4G signal and the 5G signal are converted into signal strengths of signals having the same bandwidth, the modem 270 may determine an amplification gain based on at least one of the converted signal strengths. have. In addition, according to the determined amplification gain, the amplification gain of the LNA connected to the antenna receiving the signal in which the 4G signal and the 5G signal are mixed may be controlled (S504).

For example, the step S504 may be a step of determining and controlling an amplification gain of the LNA based on a statistical value of signal strengths of signals having the same bandwidth as a result of the conversion of step S502.

In this case, the statistical value may be an average value. And the modem 270 determines the amplification gain of the LNA so that the average value of the signal intensities reaches the maximum acceptance level of the acceptance level range, that is, the intermediate value between the upper limit and the minimum acceptance level, that is, the lower limit, and Can be controlled.

Here, the acceptance level range is the minimum signal strength required for smooth analog-to-digital conversion, and the maximum signal strength values allowable by the wireless communication unit 110 in which the RF circuit is not damaged according to the signal strength, respectively, the lower limit value and the upper limit value. It may mean the range of the signal strength. That is, if the amplified signal level is lower than the lower limit of the acceptance level range, the ADC 310 of the RFIC 250 may not perform analog-to-digital conversion of the received signal, and the signal level amplified than the upper limit of the acceptance level range. If this is high, the circuit of the RFIC 250 may be damaged.

Meanwhile, the step S504 may be a step of determining and controlling an amplification gain of the LNA based on one of signal strengths of signals having the same bandwidth as a result of the conversion in step S502. In this case, the modem 270 determines and controls the amplification gain of the LNA according to a signal strength having a larger value or a signal strength having a smaller value among signal strengths of the signals having the same bandwidth according to a preset condition. I can.

Here, the preset condition may be related to an electric field state around the electronic device 100. That is, the modem 270 is the signal strength having a greater value among the signal strengths of the signals having the same bandwidth according to whether the electric field state between the electronic device 100 and the base station of each signal is a strong electric field or a weak electric field. The amplification gain of the LNA can be determined and controlled based on the signal strength having a small value.

6 is a flowchart illustrating an operation process of differently controlling the amplification gain of the LNA according to the state of the electric field around the electronic device 100 by the modem 270 as described above.

Referring to FIG. 6, when the modem 270 of the electronic device 100 converts the signal strengths of the 4G signal and the 5G signal into the signal strengths of signals having the same bandwidth in the step S502, the converted received signal The electric field state may be determined based on the intensities (S600).

For example, the modem 270 may determine that the electric field state around the electronic device 100 is a strong electric field when the average of the signal intensities converted in step S502 is greater than or equal to a preset threshold. On the other hand, when the average of the signal intensities converted in step S502 is less than a preset threshold, it may be determined that the electric field state around the electronic device 100 is a weak electric field.

Then, the modem 270 may determine the amplification gain of the LNA based on different signal strengths according to the determination result of step S600 (S602). When the electric field state determined in step S600 is a strong electric field, the modem 270 may control the amplification gain of the LNA based on the signal strength having a stronger value among the converted signal strengths (S604).

This is because, in the case of a strong electric field, as the signal strength is strong, there is a possibility that the difference in signal strength between the converted signal strengths is large. In this case, if the amplification gain of the LNA is controlled based on the weak signal strength, the strong signal becomes stronger and there is a high possibility of damaging the circuit. In the case of such a strong electric field state, the case of controlling the amplification gain of the LNA based on the signal strength having a stronger value among the converted signal strengths, and, on the contrary, controlling the amplification gain of the LNA based on the weak signal strength. Examples of the case will be described in more detail with reference to FIG. 7 below.

On the other hand, when the electric field state determined in step S600 is a weak electric field, the modem 270 may control the amplification gain of the LNA based on the signal strength having a weaker value among the converted signal strengths (S606).

This is because in the case of a weak electric field, as the signal strength is weak, there is a possibility that the difference in signal strength between the converted signal strengths is small. In this case, when the amplification gain of the LNA is controlled based on the strong signal strength, the weak signal may not be sufficiently amplified to reach an acceptable level. In the case of such a weak electric field state, the case of controlling the amplification gain of the LNA based on the signal strength having a weaker value among the converted signal strengths, and, on the contrary, controlling the amplification gain of the LNA based on the strong signal strength. Examples of the case will be described in more detail with reference to FIG. 8 below.

First, FIG. 7 is an exemplary diagram showing examples of controlling an amplification gain of an LNA according to the strength of received signals when the peripheral electric field of the electronic device 100 according to an embodiment of the present invention is a strong electric field.

Referring to FIG. 7 (a), FIG. 7 (a) shows an example of the signal strength of the 4G signal 710 and the signal strength of the 5G signal 720 converted to the same bandwidth (20 MHz). In this case, as shown in (a) of FIG. 7, when the average of the signal strength of the converted 4G signal 710 and the signal strength of the 5G signal 720 is equal to or greater than a preset threshold, the modem 270 currently operates the electronic device ( 100) It can be determined that the surrounding electric field is a strong electric field.

In this case, the modem 270 is a 4G signal 710, which is a signal having a stronger strength among the signal strength of the converted 4G signal 710 and the signal strength of the 5G signal 720, as described in step S604 of FIG. 6. The amplification gain of the LNA can be determined based on the signal strength of. In this case, the modem 270 may determine and control the amplification gain of the LNA so that the signal having a stronger intensity becomes less than the maximum acceptance level, that is, the upper limit value of the acceptance level range 700.

Meanwhile, the modem 270 may determine the amplification gain of the LNA so that the strength of the signal having the stronger strength among the 4G signal and the 5G signal converted to the same bandwidth is amplified to be less than the upper limit of the acceptance level range 700. have. In this case, more preferably, the modem 270 adjusts the amplification gain of the LNA so that the signal strength of the signal having a stronger strength reaches the intermediate value of the acceptance level range 700 or more and less than the upper limit of the acceptance level range 700. You can decide and control.

Therefore, as shown in (b) of FIG. 7, the amplification gain (3dB) of the LNA can be determined so that the signal 710 having a stronger intensity is amplified as much as possible within the limit that the RF circuit is not damaged, and the determined amplification gain According to (3dB), a signal having a weaker intensity can also be amplified. Accordingly, as shown in (b) of FIG. 7, the amplification gain may be determined so that both signal strengths reach within the acceptance level range 700.

On the other hand, (c) and (d) of FIG. 7 show examples in which the amplification gain of the LNA is determined based on the signal 720 having a weaker intensity.

For example, when the amplification gain (8dB) of the LNA is determined so that the signal 720 having a weaker intensity is amplified below the upper limit of the acceptance level range 700, the weak intensity as shown in (c) of FIG. 7 The signal 720 having a can be amplified as much as possible within the acceptance level range, but the signal 710 having a stronger intensity may be amplified to an intensity exceeding the acceptance level range 700 and cause damage to the RF circuit. have.

Meanwhile, FIG. 7D shows an example of determining the amplification gain (5dB) of the LNA so that the signal 720 having a weaker intensity reaches the intermediate value of the acceptance level range 700. In this case, the strength of the signal 710, which is lower than that shown in FIG. 7(c), but also has a stronger strength, may exceed the acceptance level range 700, which may cause damage to the RF circuit. I can.

Therefore, in the case of a strong electric field, controlling the amplification gain of the LNA so that a signal having a stronger intensity is amplified below the upper limit of the acceptance level range 700 is to control the amplification gain of the LNA based on a signal having a weaker intensity. It may be more desirable in terms of protection of the RF circuit than to do.

Meanwhile, FIG. 8 is an exemplary diagram illustrating examples of controlling an amplification gain of an LNA according to the strength of received signals when the peripheral electric field of the electronic device 100 according to an embodiment of the present invention is a weak electric field.

Looking at (a) of FIG. 8, (a) of FIG. 8 shows the average of the signal strength 710 of the 4G signal converted to the same bandwidth (20 MHz) and the signal strength 720 of the 5G signal is a preset threshold. It shows the case of less than. When the average signal strength of the converted 4G signal signal strength 710 and the 5G signal strength 720 is less than a preset threshold, the modem 270 indicates that the current electric field state around the electronic device 100 is a weak electric field. I can judge.

In this case, the modem 270, as described in step S606 of FIG. 6, is the signal strength of the 5G signal, which is a signal having a weaker strength among the signal strength 710 of the converted 4G signal and the signal strength 720 of the 5G signal. Based on (720), the amplification gain of LNA can be determined.

Here, the modem 270 is the LNA so that the strength of the signal having the weaker strength among the signals of the 4G signal 710 and the 5G signal 720 converted to the same bandwidth is amplified to be greater than the lower limit of the acceptance level range 700. The amplification gain of can be determined. In this case, more preferably, the modem 270 increases the amplification gain of the LNA so that the signal strength of the signal having the weaker strength is amplified below the middle value of the acceptance level range 700 or more than the lower limit of the acceptance level range 700. You can decide and control.

Therefore, as shown in (b) of FIG. 8, the amplification gain (20dB) of the LNA can be determined so that the signal 720 having a weaker intensity is amplified to a minimum acceptance level, that is, a lower limit or more, and the determined amplification gain (20dB) ), a signal having a stronger intensity can also be amplified. Accordingly, as shown in (b) of FIG. 8, as the signal 720 having a weaker intensity is amplified above the minimum acceptance level, the signal 710 having a stronger intensity may also be amplified above the minimum reception level. have.

In contrast, FIGS. 8C and 8D show examples in which the amplification gain of the LNA is determined based on a signal 710 having a stronger intensity.

For example, in the case of determining the amplification gain (12dB) of the LNA so that the signal 710 having a stronger intensity is amplified above the lower limit of the acceptance level range 700, as shown in FIG. The signal 710 having an intensity may be amplified beyond the lower limit of the acceptance level range 600, but a case in which the signal 720 having a weaker intensity does not reach the acceptance level range 700 may occur. In this case, when sufficient amplification of the 5G signal 720 having a weaker intensity is not performed, analog-to-digital conversion of the 5G signal may not be performed or an error may occur during conversion.

Meanwhile, FIG. 8D shows an example of determining the amplification gain (15dB) of the LNA so that the signal 710 having a stronger intensity reaches the intermediate value of the acceptance level range 700. In this case, the strength of the signal 720, which is higher than that shown in (c) of FIG. 8, but also has a weaker strength, may not reach the acceptance level range 700, and similarly, the analog-to-digital conversion of the RFIC 250 Error may occur.

Therefore, in the case of a weak electric field having a small difference in signal intensities, when the minimum amplification level is prioritized by controlling the amplification gain of the LNA so that the signal having a weaker intensity reaches within the acceptance level range 700, It may be more desirable for smooth communication than controlling the amplification gain of the LNA based on the signal.

The present invention described above can be implemented as a computer-readable code on a medium on which a program is recorded. The computer-readable medium includes all types of recording devices that store data that can be read by a computer system. Examples of computer-readable media include hard disk drives (HDDs), solid state disks (SSDs), silicon disk drives (SDDs), ROMs, RAM, CD-ROMs, magnetic tapes, floppy disks, optical data storage devices, etc. There is also a carrier wave (for example, transmission over the Internet) also includes the implementation in the form of. In addition, the computer may include a terminal controller 180 or a modem 270 of the electronic device 100. 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 (15)

1. A plurality of antennas for receiving signals in which 4G signals and 5G signals are mixed;

   A plurality of low noise amplifiers (LNAs) formed between the synthesizer for synthesizing received signals and each antenna, and amplifying the received signals;

   An RFIC for separating signals received through the plurality of antennas into 4G signals and 5G signals; And,

   And a modem that converts the signal strengths of the separated signals into signal strengths of signals according to the same bandwidth, and determines an amplification gain of the plurality of LNAs based on at least one of the converted signal strengths. Electronics.
2. The method of claim 1,

   The modem,

   Determining an amplification gain of the plurality of LNAs based on the signal strength of any one of the converted signal strengths,

   The signal strength as the reference is,

   The electronic device, characterized in that it differs from each other according to an electric field state around the electronic device determined based on the converted signal intensities.
3. The method of claim 2, wherein the modem,

   When the electric field around the electronic device is a strong electric field, an amplification gain of the plurality of LNAs is determined based on a signal strength having a high value among the converted signal strengths,

   When the electric field around the electronic device is a weak electric field, an amplification gain of the plurality of LNAs is determined based on a signal strength having a lower value among the converted signal strengths.
4. The method of claim 3, wherein the modem,

   Set an acceptance level range having a range of signal levels greater than or equal to a signal level capable of analog digital converting (ADC) in the RFIC and less than the intensity at which circuit damage is caused to the RFIC, and

   When the electric field around the electronic device is a strong electric field, the amplification gain of the plurality of LNAs so that the signal intensity having a high value among the converted signal intensities is amplified below the upper limit of the acceptance level range and above the intermediate value of the acceptance level range. To determine,

   When the electric field around the electronic device is a weak electric field, the amplification gain of the plurality of LNAs so that a signal strength having a low value among the converted signal strengths is amplified to a value equal to or greater than the lower limit of the acceptance level range and less than the middle value of the acceptance level range. Electronic device, characterized in that to determine the.
5. The method of claim 2, wherein the modem,

   An electronic device comprising determining an electric field around the electronic device as a strong electric field or a weak electric field according to whether the average value of the converted signal intensities is equal to or greater than a preset signal strength.
6. The method of claim 1, wherein the modem,

   Set the acceptance level range having a range of signal levels greater than or equal to a signal level capable of analog digital converting (ADC) in the RFIC and less than an intensity that causes circuit damage to the RFIC,

   And determining the amplification gains of the plurality of LNAs according to an average value of the converted signal intensities and an intermediate value between an upper limit value and a lower limit value of the acceptance level range.
7. The method of claim 1, wherein the modem,

   The electronic device converts the signal strength of the 4G signal into the signal strength according to the bandwidth of the 5G signal or converts the signal strength of the 5G signal into the signal strength according to the bandwidth of the 4G signal according to a communication method connected to the base station. Electronic devices.
8. The method of claim 1, wherein the modem,

   The difference between the first received signal sensitivity corresponding to the bandwidth of the first signal as a reference among the 4G signal and the 5G signal, and the second received signal sensitivity corresponding to the bandwidth of the second signal different from the first signal 2 Compensating for the signal strength of the signal to calculate the signal strength of the second signal having the bandwidth of the first signal,

   The first received signal sensitivity and the second received signal sensitivity,

   An electronic device, characterized in that the bandwidth of the first signal and the bandwidth of the second signal are determined according to Equation 1 below.

   [Equation 1]

   

   The unit of the received signal sensitivity is dB (desiBel), and the BW means a bandwidth (BandWidth).
9. The method of claim 8, wherein the modem,

   An electronic device, characterized in that the first received signal sensitivity and the second received signal sensitivity are calculated by further reflecting a signal to noise ratio in Equation (1).
10. The method of claim 9, wherein the signal-to-noise ratio is

    An electronic device, characterized in that it is determined according to a modulation method and a code rate corresponding to each of the 4G signal and the 5G signal.
11. The method of claim 8, wherein the modem,

    An electronic device, characterized in that the first received signal sensitivity and the second received signal sensitivity are calculated by further reflecting the noise figure of the RFIC.
12. The method of claim 1, wherein the 4G signal and 5G signal,

    An electronic device characterized in that it is a preset reference signal.
13. In the control method of an electronic device including a wireless communication unit including a plurality of antennas, a plurality of LNA (Low Noise Amplifier), one RFIC, and a modem,

    A first step of receiving, by the plurality of antennas, a signal in which a 4G signal and a 5G signal are mixed, respectively;

    A second step of amplifying a signal received from each antenna according to a preset amplification gain by each LNA connected to each antenna;

    A third step of separating, by the RFIC, each of the signals amplified by each LNA into a 4G signal and a 5G signal;

    A fourth step of determining, by the modem, for each antenna, a first signal serving as a reference among the separated signals, and converting the signal strength of the second signal according to the bandwidth of the first signal;

    A fifth step of the modem, for each antenna, determining an amplification gain of an LNA corresponding to each antenna based on at least one of a signal strength of the first signal and a signal strength of the converted second signal; And,

    And a sixth step of amplifying a signal received from each antenna by each of the plurality of LNAs according to an amplification gain determined by the modem.
14. The method of claim 13, wherein the fifth step,

    Step 5-1 of the modem, for each antenna, determining an electric field state based on a signal strength of the first signal and a signal strength of the converted second signal;

    Step 5-2 of determining an amplification gain of an LNA corresponding to each antenna based on a higher value of the signal strength of the first signal and the signal strength of the converted second signal when the determined electric field state is a strong electric field ; And,

    Step 5-3 of determining an amplification gain of an LNA corresponding to each antenna based on a lower value of the signal strength of the first signal and the signal strength of the converted second signal when the determined electric field state is a weak electric field Control method of an electronic device comprising a.
15. The method of claim 13, wherein the fourth step,

    A 4-1 step of calculating a received signal sensitivity according to the bandwidth of the first signal and a second received signal sensitivity according to the bandwidth of the second signal, based on Equation 1 below; And,

    Step 4-2 of converting the signal strength of the second signal according to the bandwidth of the first signal by compensating for a difference between the sensitivity of the first received signal and the sensitivity of the second received signal with the signal strength of the second signal Control method of an electronic device comprising a.

    [Equation 1]

    

    The unit of the received signal sensitivity is dB (desiBel), and the BW means a bandwidth (BandWidth).

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