KR20220073425A - Electronic device and method for transmitting a reference signal in the electronic device transmitting signals through a plurality of antennas - Google Patents

Abstract

According to various embodiments, the electronic device may include a communication processor, at least one radio frequency integrated circuit (RFIC) connected to the communication processor, and at least one RFIC connected to the at least one RFIC configured to process a transmission signal a radio frequency front-end (RFFE) circuit, comprising a plurality of antennas connected through the at least one RFFE circuit, wherein the communication processor transmits a reference signal through a first antenna among the plurality of antennas At a first time point, it is checked whether data is transmitted through a second antenna among the plurality of antennas, and as a result of the check, when data is not transmitted through the second antenna, it is set for transmission of the reference signal. It is possible to control to transmit the reference signal to the base station with the second power adjusted upward from the first power. Various other embodiments are possible.

Description

An electronic device and a method of transmitting a reference signal in an electronic device transmitting a signal through a plurality of antennas

Various embodiments of the present disclosure relate to an electronic device and a method for transmitting a reference signal in an electronic device transmitting a signal through a plurality of antennas.

With the recent development of mobile communication technology, as the use of mobile terminals providing various functions has become common, efforts are being made to develop a 5G communication system to meet the increasing demand for wireless data traffic. In addition to the frequency band used in the 3G communication system and the LTE (long term evolution) communication system, the 5G communication system has a higher frequency band (eg, For example, implementation in the 25-60 GHz band) is being considered.

For example, in order to mitigate the path loss of radio waves and increase the propagation distance of radio waves in the mmWave band, in the 5G communication system, beamforming, massive multiple-input multiple-output (MIMO), Full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, and large scale antenna technologies are being discussed.

As a method of implementing 5G communication, a stand alone (SA) method and a non-stand alone (NSA) method are being considered. Among them, the SA method may be a method using only a new radio (NR) system, and the NSA method may be a method using an NR system together with an existing LTE system. In the NSA scheme, the user terminal may use the gNB of the NR system as well as the eNB of the LTE system. A technology that enables a user terminal to enable heterogeneous communication systems may be referred to as dual connectivity.

In order to transmit a signal from the electronic device to a communication network (eg, a base station), in the electronic device, a processor or data generated from the communication processor are transferred to a radio frequency integrated circuit (RFIC) and a radio frequency front end (RFFE) circuit (hereinafter, described below). For convenience, the signal may be processed through 'RFFE') and then transmitted to the outside of the electronic device through an antenna.

The electronic device may transmit a reference signal (eg, a sounding reference signal (SRS)) referenced by the base station of the communication network for channel estimation to at least one antenna through the RFFE. The base station may efficiently allocate a downlink bandwidth by estimating a channel based on a reference signal transmitted from the electronic device, and may perform multi-antenna signal processing or beamforming processing. The electronic device may improve data reception performance by receiving a multi-antenna signal-processed or beamforming-processed signal from the base station.

For example, an electronic device supporting a method of simultaneously transmitting a plurality of signals through a plurality of antennas (eg, uplink MIMO (UL-MIMO) or uplink carrier aggregation (UL-CA)) has a maximum power transmittable through each antenna. It may be limited compared to the maximum power of the electronic device. When the reference signal is transmitted with the limited power, the signal received by the base station is low, so there is a high possibility of allocating a low modulation and coding scheme (MCS) level to the electronic device that has transmitted the reference signal, and thus the performance of the electronic device (eg, , the throughput) may be lowered.

According to various embodiments, an electronic device capable of transmitting a plurality of signals simultaneously through a plurality of antennas by adjusting a transmission power higher than a set value when transmitting a reference signal in an electronic device that transmits a plurality of signals through a plurality of antennas, and an electronic device that transmits a signal through a plurality of antennas may provide a method for transmitting a reference signal.

According to various embodiments, the electronic device may include a communication processor, at least one radio frequency integrated circuit (RFIC) connected to the communication processor, and at least one RFIC connected to the at least one RFIC configured to process a transmission signal a radio frequency front-end (RFFE) circuit, comprising a plurality of antennas connected through the at least one RFFE circuit, wherein the communication processor transmits a reference signal through a first antenna among the plurality of antennas At a first time point, it is checked whether data is transmitted through a second antenna among the plurality of antennas, and as a result of the check, when data is not transmitted through the second antenna, it is set for transmission of the reference signal. It is possible to control to transmit the reference signal to the base station with the second power adjusted upward from the first power.

According to various embodiments, the electronic device includes a communication processor, at least one radio frequency integrated circuit (RFIC) connected to the communication processor, and a first RFFE connected to the at least one RFIC and configured to process a transmission signal (radio frequency front-end) circuit, a second RFFE circuit connected to the at least one RFIC and configured to process a transmission signal, each connected through the first RFFE circuit to transmit a signal corresponding to at least one communication network A first antenna group including a plurality of antennas, and a second antenna group each including a plurality of antennas connected through the second RFFE circuit to transmit a signal corresponding to at least one communication network, wherein the communication At a first time point when a reference signal is transmitted through the plurality of antennas, the processor is configured to use a first antenna of the first antenna group with a second power adjusted upward from a first power configured for transmission of the reference signal. control to transmit a first reference signal to the base station through can be controlled to do so.

According to various embodiments, a method of operating an electronic device includes a communication processor, at least one radio frequency integrated circuit (RFIC) connected to the communication processor, and configured to be connected to the at least one RFIC to process a transmission signal A method for transmitting a reference signal in an electronic device including at least one radio frequency front-end (RFFE) circuit and a plurality of antennas connected through the at least one RFFE circuit, the method comprising: a first one of the plurality of antennas; An operation of checking whether data is transmitted through a second antenna among the plurality of antennas at a first time point when a reference signal is transmitted through an antenna, and as a result of the check, data is transmitted through the second antenna When not transmitting, the method may include controlling to transmit the reference signal to the base station with the second power adjusted upward from the first power set for the transmission of the reference signal.

According to various embodiments, the electronic device that simultaneously transmits a plurality of signals through a plurality of antennas may be assigned a relatively higher modulation and coding scheme (MCS) level by adjusting the transmission power higher than a set value when transmitting a reference signal. By increasing the possibility, it is possible to increase the performance of the electronic device.

1 is a block diagram of an electronic device in a network environment, according to various embodiments of the present disclosure;
2A is a block diagram of an electronic device for supporting legacy network communication and 5G network communication, according to various embodiments of the present disclosure;
2B is a block diagram of an electronic device for supporting legacy network communication and 5G network communication, according to various embodiments of the present disclosure;
3A is a diagram illustrating wireless communication systems that provide a network of legacy communication and/or 5G communication according to various embodiments of the present disclosure;
3B is a diagram illustrating wireless communication systems that provide networks of legacy communication and/or 5G communication according to various embodiments of the present disclosure;
3C is a diagram illustrating wireless communication systems that provide networks of legacy communication and/or 5G communication according to various embodiments of the present disclosure;
4 is a block diagram of an electronic device according to various embodiments of the present disclosure;
5A is a diagram illustrating a reference signal transmission of an electronic device according to various embodiments of the present disclosure;
5B is a diagram illustrating a reference signal transmission of an electronic device according to various embodiments of the present disclosure;
6 is a flowchart illustrating a signal transmission/reception procedure between an electronic device and a communication network according to various embodiments of the present disclosure;
7 is a diagram illustrating a transmission period of a reference signal according to various embodiments of the present disclosure;
8 is a circuit diagram illustrating a detailed circuit of an electronic device according to various embodiments of the present disclosure;
9 is a block diagram illustrating a structure of an electronic device according to various embodiments of the present disclosure;
10 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;
11 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;
12 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;
13 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;
14 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure.
15 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;
16 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments. Referring to FIG. 1 , in a network environment 100 , an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 . According to an embodiment, the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound output module 155 , a display module 160 , an audio module 170 , and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or an antenna module 197 may be included. In some embodiments, at least one of these components (eg, the connection terminal 178 ) may be omitted or one or more other components may be added to the electronic device 101 . In some embodiments, some of these components (eg, sensor module 176 , camera module 180 , or antenna module 197 ) are integrated into one component (eg, display module 160 ). can be

The processor 120, for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120 . It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 . According to an embodiment, the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, when the electronic device 101 includes the main processor 121 and the sub-processor 123 , the sub-processor 123 may use less power than the main processor 121 or may be set to be specialized for a specified function. can The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The auxiliary processor 123 is, for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, the co-processor 123 (eg, an image signal processor or a communication processor) may be implemented as part of another functionally related component (eg, the camera module 180 or the communication module 190). have. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example. The artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.

The memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176 ). The data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134 .

The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system 142 , middleware 144 , or an application 146 .

The input module 150 may receive a command or data to be used in a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 . The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).

The sound output module 155 may output a sound signal to the outside of the electronic device 101 . The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback. The receiver may be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 . The display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device. According to an embodiment, the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 , or an external electronic device (eg, a sound output module 155 ) connected directly or wirelessly with the electronic device 101 . A sound may be output through the electronic device 102 (eg, a speaker or headphones).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more designated protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ). According to an embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 may manage power supplied to the electronic device 101 . According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101 . According to one embodiment, battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a LAN (local area network) communication module, or a power line communication module). A corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 192 uses the subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 . The electronic device 101 may be identified or authenticated.

The wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR). NR access technology includes high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)). The wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example. The wireless communication module 192 includes various technologies for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna. The wireless communication module 192 may support various requirements specified in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ). According to an embodiment, the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less).

The antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern. According to an embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) other than the radiator may be additionally formed as a part of the antenna module 197 .

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and a signal ( eg commands or data) can be exchanged with each other.

According to an embodiment, the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or a part of operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 is to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 . The electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request. For this, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199 . The electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

2A is a block diagram 200 of an electronic device 101 for supporting legacy network communication and 5G network communication, according to various embodiments. Referring to FIG. 2A , the electronic device 101 includes a first communication processor 212 , a second communication processor 214 , a first radio frequency integrated circuit (RFIC) 222 , a second RFIC 224 , and a third RFIC 226 , fourth RFIC 228 , first radio frequency front end (RFFE) 232 , second RFFE 234 , first antenna module 242 , second antenna module 244 , third An antenna module 246 and antennas 248 may be included. The electronic device 101 may further include a processor 120 and a memory 130 . The second network 199 may include a first cellular network 292 and a second cellular network 294 . According to another embodiment, the electronic device 101 may further include at least one component among the components illustrated in FIG. 1 , and the second network 199 may further include at least one other network. According to an embodiment, a first communication processor 212 , a second communication processor 214 , a first RFIC 222 , a second RFIC 224 , a fourth RFIC 228 , a first RFFE 232 , and the second RFFE 234 may form at least a part of the wireless communication module 192 . According to another embodiment, the fourth RFIC 228 may be omitted or may be included as a part of the third RFIC 226 .

The first communication processor 212 may support establishment of a communication channel of a band to be used for wireless communication with the first cellular network 292 and legacy network communication through the established communication channel. According to various embodiments, the first cellular network may be a legacy network including a second generation (2G), 3G, 4G, or long term evolution (LTE) network. The second communication processor 214 establishes a communication channel corresponding to a designated band (eg, about 6 GHz to about 60 GHz) among bands to be used for wireless communication with the second cellular network 294 , and a 5G network through the established communication channel communication can be supported. According to various embodiments, the second cellular network 294 may be a 5G network defined by 3GPP. Additionally, according to an embodiment, the first communication processor 212 or the second communication processor 214 corresponds to another designated band (eg, about 6 GHz or less) among bands to be used for wireless communication with the second cellular network 294 . It is possible to support the establishment of a communication channel, and 5G network communication through the established communication channel.

The first communication processor 212 may transmit/receive data to and from the second communication processor 214 . For example, data classified to be transmitted over the second cellular network 294 may be changed to be transmitted over the first cellular network 292 . In this case, the first communication processor 212 may receive transmission data from the second communication processor 214 . For example, the first communication processor 212 may transmit/receive data through the second communication processor 214 and the interprocessor interface 213 . The interprocessor interface 213 may be implemented as, for example, a universal asynchronous receiver/transmitter (UART) (eg, high speed-UART (HS-UART) or peripheral component interconnect bus express (PCIe) interface). Alternatively, the first communication processor 212 and the second communication processor 214 may exchange control information and packet data information using, for example, a shared memory. The communication processor 212 may transmit/receive various information to and from the second communication processor 214 , such as sensing information, information on output strength, and resource block (RB) allocation information.

Depending on the implementation, the first communication processor 212 may not be directly connected to the second communication processor 214 . In this case, the first communication processor 212 may transmit and receive data through the second communication processor 214 and the processor 120 (eg, an application processor). For example, the first communication processor 212 and the second communication processor 214 may transmit and receive data with the processor 120 (eg, an application processor) through the HS-UART interface or the PCIe interface, but There is no restriction on the type. Alternatively, the first communication processor 212 and the second communication processor 214 may exchange control information and packet data information using a shared memory with the processor 120 (eg, an application processor). .

According to one embodiment, the first communication processor 212 and the second communication processor 214 may be implemented in a single chip or a single package. According to various embodiments, the first communication processor 212 or the second communication processor 214 may be formed in a single chip or a single package with the processor 120 , the co-processor 123 , or the communication module 190 . have. For example, as shown in FIG. 2B , the unified communication processor 260 may support both functions for communication with the first cellular network 292 and the second cellular network 294 .

The first RFIC 222, when transmitting, transmits a baseband signal generated by the first communication processor 212 from about 700 MHz to about 700 MHz used for the first cellular network 292 (eg, a legacy network). It can be converted to a radio frequency (RF) signal of 3 GHz. Upon reception, an RF signal is obtained from a first network 292 (eg, a legacy network) via an antenna (eg, a first antenna module 242 ), and via an RFFE (eg, a first RFFE 232 ). It may be preprocessed. The first RFIC 222 may convert the preprocessed RF signal into a baseband signal to be processed by the first communication processor 212 .

The second RFIC 224, when transmitting, uses the baseband signal generated by the first communication processor 212 or the second communication processor 214 to the second cellular network 294 (eg, a 5G network). It can be converted into an RF signal (hereinafter, 5G Sub6 RF signal) of the Sub6 band (eg, about 6 GHz or less). Upon reception, a 5G Sub6 RF signal is obtained from a second cellular network 294 (eg, 5G network) via an antenna (eg, second antenna module 244 ), and an RFFE (eg, second RFFE 234 ) ) can be preprocessed. The second RFIC 224 may convert the preprocessed 5G Sub6 RF signal into a baseband signal to be processed by a corresponding one of the first communication processor 212 or the second communication processor 214 .

The third RFIC 226 transmits the baseband signal generated by the second communication processor 214 to the 5G Above6 band (eg, about 6 GHz to about 60 GHz) to be used in the second cellular network 294 (eg, 5G network). It can be converted into an RF signal (hereinafter referred to as 5G Above6 RF signal). Upon reception, a 5G Above6 RF signal may be obtained from the second cellular network 294 (eg, 5G network) via an antenna (eg, antenna 248 ) and pre-processed via a third RFFE 236 . The third RFIC 226 may convert the preprocessed 5G Above6 RF signal into a baseband signal to be processed by the second communication processor 214 . According to one embodiment, the third RFFE 236 may be formed as part of the third RFIC 226 .

According to an embodiment, the electronic device 101 may include the fourth RFIC 228 separately from or as at least a part of the third RFIC 226 . In this case, the fourth RFIC 228 converts the baseband signal generated by the second communication processor 214 into an RF signal (hereinafter, IF signal) of an intermediate frequency band (eg, about 9 GHz to about 11 GHz). After conversion, the IF signal may be transmitted to the third RFIC 226 . The third RFIC 226 may convert the IF signal into a 5G Above6 RF signal. Upon reception, a 5G Above6 RF signal may be received from the second cellular network 294 (eg, 5G network) via an antenna (eg, antenna 248 ) and converted to an IF signal by a third RFIC 226 . have. The fourth RFIC 228 may convert the IF signal into a baseband signal for processing by the second communication processor 214 .

According to an embodiment, the first RFIC 222 and the second RFIC 224 may be implemented as at least a part of a single chip or a single package. According to various embodiments, when the first RFIC 222 and the second RFIC 224 in FIG. 2A or 2B are implemented as a single chip or a single package, they may be implemented as an integrated RFIC. In this case, the integrated RFIC is connected to the first RFFE 232 and the second RFFE 234 , and the integrated RFIC provides a baseband signal to a band supported by the first RFFE 232 and/or the second RFFE 234 . may be converted into a signal of , and the converted signal may be transmitted to one of the first RFFE 232 and the second RFFE 234 . According to an embodiment, the first RFFE 232 and the second RFFE 234 may be implemented as at least a part of a single chip or a single package. According to an example, at least one antenna module of the first antenna module 242 or the second antenna module 244 may be omitted or may be combined with another antenna module to process RF signals of a plurality of corresponding bands.

According to an embodiment, the third RFIC 226 and the antenna 248 may be disposed on the same substrate to form the third antenna module 246 . For example, the wireless communication module 192 or the processor 120 may be disposed on the first substrate (eg, main PCB). In this case, the third RFIC 226 is located in a partial area (eg, the bottom surface) of the second substrate (eg, sub PCB) separate from the first substrate, and the antenna 248 is located in another partial region (eg, the top surface). is disposed, the third antenna module 246 may be formed. By disposing the third RFIC 226 and the antenna 248 on the same substrate, it is possible to reduce the length of the transmission line therebetween. This, for example, can reduce loss (eg, attenuation) of a signal in a high-frequency band (eg, about 6 GHz to about 60 GHz) used for 5G network communication by the transmission line. Accordingly, the electronic device 101 may improve the quality or speed of communication with the second network 294 (eg, a 5G network).

According to an example, the antenna 248 may be formed as an antenna array including a plurality of antenna elements that may be used for beamforming. In this case, the third RFIC 226 may include, for example, as a part of the third RFFE 236 , a plurality of phase shifters 238 corresponding to the plurality of antenna elements. During transmission, each of the plurality of phase shifters 238 may transform the phase of a 5G Above6 RF signal to be transmitted to the outside of the electronic device 101 (eg, a base station of a 5G network) through a corresponding antenna element. . Upon reception, each of the plurality of phase shifters 238 may convert the phase of the 5G Above6 RF signal received from the outside through a corresponding antenna element into the same or substantially the same phase. This enables transmission or reception through beamforming between the electronic device 101 and the outside.

The second cellular network 294 (eg, 5G network) may be operated independently (eg, Stand-Alone (SA)) or connected to the first cellular network 292 (eg, legacy network). Example: Non-Stand Alone (NSA)). For example, the 5G network may have only an access network (eg, a 5G radio access network (RAN) or a next generation RAN (NG RAN)), and may not have a core network (eg, a next generation core (NGC)). In this case, after accessing the access network of the 5G network, the electronic device 101 may access an external network (eg, the Internet) under the control of a core network (eg, evolved packed core (EPC)) of the legacy network. Protocol information for communication with a legacy network (eg, LTE protocol information) or protocol information for communication with a 5G network (eg, New Radio (NR) protocol information) is stored in the memory 230, and other components (eg, a processor 120 , the first communication processor 212 , or the second communication processor 214 ).

3A, 3B, and 3C are diagrams illustrating wireless communication systems that provide networks of legacy communication and/or 5G communication according to various embodiments. 3A, 3B, and 3C , the network environments 300a to 300c may include at least one of a legacy network and a 5G network. The legacy network includes, for example, a 4G or LTE base station 340 (eg, eNB (eNodeB)) of the 3GPP standard supporting wireless connection with the electronic device 101 and an evolved packet (EPC) for managing 4G communication. core) 342 . The 5G network, for example, manages 5G communication between the electronic device 101 and a New Radio (NR) base station 350 (eg, gNB (gNodeB)) supporting wireless connection and the electronic device 101 . It may include a 5th generation core (5GC) 352.

According to various embodiments, the electronic device 101 may transmit/receive a control message and user data through legacy communication and/or 5G communication. The control message is, for example, a message related to at least one of security control, bearer setup, authentication, registration, or mobility management of the electronic device 101 . may include The user data may refer to, for example, user data excluding a control message transmitted/received between the electronic device 101 and the core network 330 (eg, the EPC 342 ).

Referring to FIG. 3A , the electronic device 101 according to an embodiment uses at least a part of a legacy network (eg, the LTE base station 340 and the EPC 342 ) to at least a part of a 5G network (eg: The NR base station 350 and the 5GC 352 may transmit/receive at least one of a control message or user data.

According to various embodiments, network environment 300a provides wireless communication dual connectivity (DC) to LTE base station 340 and NR base station 350 , and either EPC 342 or 5GC 352 . It may include a network environment in which a control message is transmitted and received with the electronic device 101 through the core network 230 of the .

According to various embodiments, in a DC environment, one of the LTE base station 340 or the NR base station 350 operates as a master node (MN) 310 and the other operates as a secondary node (SN) 320 . can do. The MN 310 may be connected to the core network 230 to transmit and receive control messages. The MN 310 and the SN 320 may be connected through a network interface to transmit/receive messages related to radio resource (eg, communication channel) management with each other.

According to various embodiments, the MN 310 may be configured as the LTE base station 340 , the SN 320 may be configured as the NR base station 350 , and the core network 330 may be configured as the EPC 342 . For example, a control message may be transmitted/received through the LTE base station 340 and the EPC 342 , and user data may be transmitted/received through at least one of the LTE base station 340 and the NR base station 350 .

According to various embodiments, the MN 310 may include the NR base station 350 , the SN 320 may include the LTE base station 340 , and the core network 330 may include the 5GC 352 . For example, a control message may be transmitted/received through the NR base station 350 and the 5GC 352 , and user data may be transmitted/received through at least one of the LTE base station 340 or the NR base station 350 .

Referring to FIG. 3B , according to various embodiments, a 5G network may include an NR base station 350 and a 5GC 352 , and may independently transmit/receive a control message and user data to/from the electronic device 101 .

Referring to FIG. 3C , the legacy network and the 5G network according to various embodiments may independently provide data transmission/reception. For example, the electronic device 101 and the EPC 342 may transmit and receive a control message and user data through the LTE base station 340 . As another example, the electronic device 101 and the 5GC 352 may transmit and receive a control message and user data through the NR base station 350 .

According to various embodiments, the electronic device 101 may be registered with at least one of the EPC 342 and the 5GC 352 to transmit/receive a control message.

According to various embodiments, the EPC 342 or the 5GC 352 may interwork to manage communication of the electronic device 101 . For example, movement information of the electronic device 101 may be transmitted/received through an interface between the EPC 342 and the 5GC 352 .

As described above, dual connectivity through the LTE base station 340 and the NR base station 350 may be referred to as E-UTRA new radio dual connectivity (EN-DC).

Hereinafter, the structure of the electronic device 101 according to various embodiments will be described in detail with reference to FIGS. 4, 8 and 9 . In each drawing of the embodiments to be described later, one communication processor 260 and one RFIC 410 are illustrated as being connected to at least one RFFE 431 and 432, but various embodiments to be described later are not limited thereto. . For example, various embodiments to be described below may include a plurality of communication processors 212, 214 and/or a plurality of RFICs 222, 224, 226, and 228 as shown in FIG. 2A or FIG. 2B in which a plurality of RFFEs ( 431 and 432) may be respectively connected.

4 is a block diagram of an electronic device according to various embodiments of the present disclosure;

Referring to FIG. 4 , an electronic device (eg, the electronic device 101 of FIG. 1 ) according to various embodiments includes a processor 120 , a communication processor 260 , an RFIC 410 , a first RFFE 431 , and a first 2 RFEE 432 , a first antenna 441 , a second antenna 442 , a third antenna 443 , a fourth antenna 444 , a first switch 451 , or a second switch 452 . can do. For example, the first RFFE 431 may be disposed on an upper portion within the housing of the electronic device 101 , and the second RFFE 432 may be disposed within the housing of the electronic device 101 . It may be disposed below 431, but various embodiments of the present disclosure are not limited to the arrangement position.

According to various embodiments, the RFIC 410, when transmitting, transmits a baseband signal generated by the communication processor 260 to a radio frequency (RF) signal used in the first communication network or the second communication network. can be converted to For example, the RFIC 410 may transmit an RF signal used for the first communication network to the first antenna 441 or the third antenna 443 through the first RFFE 431 and the first switch 451 . . The RFIC 410 transmits an RF signal used for the first communication network or the second communication network to the second antenna 442 or the fourth antenna 444 through the second RFFE 432 and the second switch 452 . can be transmitted According to various embodiments, the RFIC 410 transmits an RF signal corresponding to a first communication network (eg, NR) to the first antenna 441 or the third antenna 443 through the first RFFE 431 . and may transmit an RF signal corresponding to the second communication network (eg, LTE) to the second antenna 442 or the fourth antenna 444 through the second RFFE 432 . According to another embodiment, the RFIC 410 transmits an RF signal corresponding to a first communication network (eg, NR) or a second communication network (eg, LTE) through a first RFFE 431 to a first antenna 441 ) or a third antenna 443 , and transmits an RF signal corresponding to the same first communication network (eg, NR) or second communication network (eg, LTE) to the second antenna through the second RFFE 432 . By transmitting to 442 or the fourth antenna 444 , it may operate as a multiple-input multiple-output (MIMO) antenna.

According to various embodiments, the transmission path transmitted from the RFIC 410 to the first antenna 441 through the first RFFE 431 and the first switch 451 is a 'first antenna transmission path (Ant Tx 1 ). ) can be referred to as '. A transmission path transmitted from the RFIC 410 to the third antenna 443 through the first RFFE 431 and the first switch 451 may be referred to as a 'third antenna transmission path (Ant Tx 3)'. have.

According to various embodiments, the RFIC 410, when transmitting, transmits a baseband signal generated by the communication processor 260 to a radio frequency (RF) signal used in the first communication network or the second communication network. can be converted to For example, the RFIC 410 transmits an RF signal used for the first communication network or the second communication network to the second antenna 442 or the fourth antenna 444 through the second RFFE 432 and the second switch 451 . ) can be transmitted.

According to various embodiments, the transmission path transmitted from the RFIC 410 to the second antenna 442 through the second RFFE 432 and the second switch 452 is a 'second antenna transmission path (Ant Tx 2 ). ) can be referred to as '. A transmission path transmitted from the RFIC 410 to the fourth antenna 444 through the second RFFE 432 and the second switch 452 may be referred to as a 'fourth antenna transmission path (Ant Tx 4)'. have.

According to various embodiments, upon reception, an RF signal is received from the first communication network through the first antenna 441 or the third antenna 443 , and the received RF signal is transmitted through at least one RFIC to a communication processor 260 . In addition, an RF signal is received from the first communication network or the second communication network through the second antenna 442 or the fourth antenna 444 , and the received RF signal is transmitted through at least one RFIC to the communication processor 260 . can be transmitted to

According to various embodiments, the first communication network and the second communication network may be the same or different communication networks. For example, the first communication network may be a 5G network, and the second communication network may be a legacy network (eg, an LTE network). When the first communication network is a 5G network, the first RFFE 431 is designed to be suitable for processing a signal corresponding to the 5G network, and the second RFFE 432 processes a signal corresponding to the legacy network. It can be designed to be suitable for

According to various embodiments, a frequency band of a signal transmitted through the first RFFE 431 and a frequency band of a signal transmitted through the second RFFE 432 may be the same, similar, or different. For example, the frequency band of the signal transmitted through the first RFFE 431 may be the N41 band (2.6 GHz), which is the frequency band of the 5G network, and the frequency band of the signal transmitted through the second RFFE 431 is It may be the B41 band (2.6 GHz), which is the frequency band of the LTE network. In this case, the first RFFE 431 and the second RFFE 432 process the same or similar frequency band signals, but the first RFFE 431 is designed to enable signal processing suitable for the characteristics of the 5G network. In addition, the second RFFE 432 may be designed to enable signal processing suitable for the characteristics of the LTE network.

According to various embodiments, the electronic device transmits and receives a signal through one of the first antenna 441 and the third antenna 443 through the first RFFE 431 and the first switch 451 . When a reference signal (eg, SRS) is transmitted through the first antenna 441 and the third antenna 443 for channel estimation of a signal, data is transmitted through one transmission antenna (Tx) and used for reception. Since the reference signal is transmitted through two antennas Rx, it may be referred to as '1T2R'.

According to various embodiments, the electronic device transmits and receives a signal through one of the second antenna 442 and the fourth antenna 444 through the second RFFE 432 and the second switch 452 . When a reference signal (eg, SRS) is transmitted through the second antenna 442 and the fourth antenna 444 for channel estimation of a signal, data is transmitted through one transmit antenna (Tx) and used for reception. Since the reference signal is transmitted through two antennas Rx, it may be referred to as '1T2R'.

According to various embodiments, when the electronic device transmits and receives data simultaneously through the first RFFE 431 and the second RFFE 432 , two transmit antennas Tx and four receive antennas Rx Since , it can be referred to as '2T4R'. Since the electronic device illustrated in FIG. 4 may operate in 1T2R or 2T4R according to various embodiments, it may be referred to as an electronic device supporting '1T2R/2T4R'.

According to various embodiments, the communication processor 260 transmits a reference signal (eg, a sounding reference signal (SRS)) referenced for channel estimation in a base station of a first communication network to the first RFFE circuit ( 431 ), it is possible to control transmission to at least one antenna (the first antenna 441 or the third antenna 443 ) among the plurality of antennas of the first antenna group. According to various embodiments, the communication processor 260 transmits the reference signal referenced for channel estimation in the base station of the first communication network to the plurality of antennas of the second antenna group through the second RFFE circuit 432 . It may be controlled to additionally transmit to at least one of the antennas (the second antenna 442 or the fourth antenna 444 ). When the electronic device transmits a reference signal through the first antenna 441 , the second antenna 442 , the third antenna 443 , and the fourth antenna 444 , the base station of the first communication network performs the reference signal A signal may be received and channel estimation may be performed through the received reference signal. The base station of the first communication network may transmit beamformed signals with respect to the first antenna 441 , the second antenna 442 , the third antenna 443 , and the fourth antenna 444 . The electronic device may receive a signal transmitted from the base station of the first communication network through the first antenna 441 , the second antenna 442 , the third antenna 443 , or the fourth antenna 444 . . The electronic device shown in FIG. 4 is designed as an electronic device supporting '1T2R/2T4R', but according to various embodiments, the first antenna 441 , the second antenna 442 , and the third antenna 443 . , or by transmitting a reference signal to the base station of the first communication network through the fourth antenna 444 , it may operate as '1T4R'. According to various embodiments, when the first switch 451 and the second switch 452 are designed to be connectable, the first antenna 441, the second antenna 442, through the first RFFE 431, A reference signal can be transmitted to the third antenna 443 and the fourth antenna 444 to operate as '1T4R'.

According to various embodiments, it has been described in FIG. 4 that one RFIC 410 is connected to two RFFEs 431 and 432 to transmit a reference signal (eg, SRS), but at least one RFIC includes three or more RFFEs. The above-described embodiments may also be applied to various types of structures connected to and in which each RFFE is connected to at least one antenna.

5A and 5B are diagrams illustrating reference signal transmission of an electronic device according to various embodiments of the present disclosure; Referring to FIG. 5A , the electronic device 101 (eg, the electronic device 101 of FIG. 1 ) has four antennas (eg, a first antenna 511 , a second antenna 512 , and a third antenna 513 ). , the fourth antenna 514) may transmit a reference signal (eg, SRS). For example, the electronic device 101 amplifies a reference signal through at least one power amplifier (PA) 515 , and uses one antenna 511 and a second antenna 512 through at least one switch 516 . ), the third antenna 513, and the fourth antenna 514) may transmit the amplified reference signal. A reference signal (eg, SRS) transmitted through each antenna (eg, the first antenna 511 , the second antenna 512 , the third antenna 513 , and the fourth antenna 514 ) of the electronic device 101 ) ) may be received via each antenna 521 of the base station 520 (eg, gNB).

According to various embodiments, the electronic device 101 may transmit a reference signal through a plurality of power amplifiers (eg, RFFE) as described above with reference to FIG. 4 . For example, the electronic device 101 sets a signal transmitted to the first antenna 511 or the third antenna 513 to be processed through a first amplifier (eg, the first RFFE 431 ), and the second antenna 512 , or a signal transmitted to the fourth antenna 514 may be configured to be processed through a second amplifier (eg, the second RFFE 432 ).

According to various embodiments, the base station 520 receives the reference signal transmitted from the electronic device 101, and each antenna (eg, the first antenna 511, the second antenna 511) of the electronic device 510 from the received reference signal. A channel estimate for the antenna 512 , the third antenna 513 , and the fourth antenna 514 ) may be estimated. The base station 520 may transmit a beamformed signal to each antenna of the electronic device 101 based on the channel estimation. According to various embodiments, the base station 520 sets a modulation and coding scheme (MCS) level for an uplink signal of the electronic device 101 based on the channel estimation, and transmits the set MCS level setting information to a downlink (DCI) level. control information) may be included as SRS resource indicator (SRI) information and transmitted to the electronic device 101 . The electronic device 101 may determine the transmission power of a physical uplink shared channel (PUSCH) based on the parameter set for power control included in the SRI.

In FIG. 5A , the power amplifier 515 and the switch 516 are shown as one for convenience of explanation, and a plurality of antennas (eg, a first antenna 511 , a second antenna 512 , a third antenna 513 , or a fourth antenna 514), but it will be readily understood by those skilled in the art that the present invention is not limited thereto. For example, the electronic device 101 may include components included in the electronic device 101 illustrated in FIG. 4 .

Referring to FIG. 5B , the base station 520 may transmit the beamformed signal through an array antenna 521 including a plurality (eg, 32) of antennas. The signal transmitted from the base station 520 is transmitted to each antenna (eg, the first antenna 511 , the second antenna 512 , the third antenna 513 , or the fourth antenna 514 of the electronic device 101 ). ), and as shown in FIG. 5B , each antenna (eg, 1 antenna 511 , a second antenna 512 , and a third A signal may be received in the form of a beam directed to the antenna 513 , or the fourth antenna 514 ).

5A and 5B, when the electronic device 101 transmits a reference signal (eg, SRS) through a plurality of transmission paths, the base station 520 receives each antenna (eg, , the first antenna 511, the second antenna 512, the third antenna 513, or the fourth antenna 514) can be beamformed by checking the channel environment, and as a result, RSRP of the downlink channel (reference signal received power) and/or signal to noise ratio (SNR) may be improved. When the RSRP and/or SNR of the downlink channel is improved, a rank index (RI) or a channel quality indicator (CQI) for the corresponding electronic device may be increased. The base station 520 allocates a high rank or MCS (modulation and code schemes) to the corresponding electronic device 101 based on the improved performance of the corresponding electronic device 101 . Downlink throughput can be improved.

According to various embodiments, the base station 520 may use a downlink reference signal for downlink channel estimation. For example, when the base station 520 transmits the downlink reference signal to the electronic device 101 , the electronic device 101 may receive the downlink reference signal transmitted from the base station 520 and perform channel estimation. The electronic device 101 may transmit the channel estimation result to the base station 520 , and the base station 520 performs downlink beamforming with reference to the channel estimation result transmitted from the electronic device 101 . can

Referring back to FIGS. 5A and 5B , according to various embodiments, unlike the above-described method, the base station 520 transmits a downlink channel channel by a reference signal (eg, SRS) transmitted from the electronic device 101 . When estimating, channel estimation can be performed faster than when estimating the channel by the downlink reference signal.

According to various embodiments, by transmitting a UE Capability Inquiry message to the electronic device 101 in a first communication network (eg, a base station (gNB)) or a second communication network (eg, a base station (eNB)), the electronic device 101 ) of various setting information can be requested. For example, the first communication network (eg, a base station (gNB)) or the second communication network (eg, a base station (eNB)) may request information related to the reception antenna of the electronic device 101 through the UE Capability Inquiry message. have. The electronic device 101 may receive a UE Capability Inquiry message from the first communication network or the second communication network, and may transmit a UE Capability Information message to the first communication network or the second communication network in response thereto. According to various embodiments, information related to the reception antenna of the electronic device 101 may be included in the UE Capability Information message, such as 'supportedSRS-TxPortSwitch t1r4' or 'supportedSRS-TxPortSwitch t2r4', according to the contents of the UE Capability Inquiry message. have.

As the antenna-related information is described as 'supportedSRS-TxPortSwitch t1r4' or 'supportedSRS-TxPortSwitch t2r4', in the first communication network, the electronic device 101 transmits a reference signal using four reception antennas (Rx). can be transmitted, and information on when to transmit a reference signal (eg, SRS) for each of the four reception antennas may be included in the RRC Reconfiguration message and transmitted. For the embodiments to be described later, a case in which various embodiments are applied to '1T4R' and '2T4R' is described, but the present invention is not limited thereto. For example, various embodiments to be described later may also be applied to '1T2R'.

6 is a flowchart illustrating a signal transmission/reception procedure between an electronic device and a communication network according to various embodiments of the present disclosure; Referring to FIG. 6 , the electronic device 101 may establish an RRC connection with a first communication network (eg, a base station (gNB)) 600 through a random access channel (RACH) procedure.

According to various embodiments, in operation 610 , the first communication network 600 may transmit an RRC Reconfiguration message to the electronic device 101 . For example, the first communication network 600 may transmit an RRC Reconfiguration message in response to the RRC Request message transmitted by the electronic device 101 . As described above, in the RRC Reconfiguration message, information on a time point at which the electronic device 101 transmits a reference signal (eg, SRS) for each antenna may be included as shown in Table 1 below.

perodicityAndOffset -p s120:17
perodicityAndOffset -p s120 : 7
perodicityAndOffset -p s120: 13
perodicityAndOffset -p s120 : 3
nrofSymbols n1

Referring to the RRC Reconfiguration message, it can be seen that as described in "nrofSymbols n1.", the duration of SRS transmission may be determined by an allocated symbol. In addition, referring to the RRC Reconfiguration message, as described in "periodicityAndOffset-p s120: 17", the first SRS is set to be transmitted in the 17th slot while transmitting once every 20 slots, and "periodicityAndOffset-p s120: 7" As described in ", the second SRS is set to transmit in the 7th slot while transmitting once every 20 slots, and as described in "periodicityAndOffset-p s120: 13", the third SRS is transmitted once every 20 slots It is set to transmit in the 13th slot, and as described in "periodicityAndOffset-p s120: 3", the 4th SRS is set to transmit in the 3rd slot while transmitting once every 20 slots.

According to various embodiments, the electronic device 101 may transmit 4 SRSs at different times through each antenna in every 20 slots according to the RRC Reconfiguration setting. The size of the one slot may be determined by subcarrier spacing (SCS). For example, when the SCS is 30 KHz, the time interval of one slot may be 0.5 ms, and the time interval of 20 slots may be 10 ms. Accordingly, the electronic device 101 may repeatedly transmit the SRS at different times through each antenna every 10 ms period. According to various embodiments, one slot may include 14 symbols, and assuming that one symbol is allocated for one SRS transmission, a symbol duration of 0.5 ms * 1/14 = 35 μs (0.035 ms) time (or symbol enable time).

According to various embodiments, in operation 620 , the electronic device 101 may transmit an RRC Reconfiguration Complete message to the first communication network 600 . As the RRC reconfiguration procedure is normally completed, in operation 630 , the electronic device 101 and the first communication network 600 may complete RRC connection establishment.

Referring back to FIG. 4 , according to various embodiments, the communication processor 260 and/or the RFIC 410 transmits the reference signal (eg, SRS) received from the first communication network 600 as described above. Based on information on A reference signal may be transmitted at different times.

7 is a diagram illustrating a transmission period of a reference signal according to various embodiments of the present disclosure; Referring to FIG. 7 , for example, a set number of SRSs (eg, 4) may be transmitted for every set SRS transmission period (eg, 10 ms, 20 ms, 40 ms, or 80 ms). As described above in the description of FIG. 6, when the electronic device 101 is set to '1T4R', according to the RRC Reconfiguration setting, every 20 slots (eg, 10 ms, 20 ms, 40 ms, or 80 ms) Within 10ms), four SRSs can be transmitted at different times through each antenna. For example, in the 17th slot among the 20 slots, the first SRS is transmitted through the first antenna 441 (RX0), and in the 7th slot, the second SRS is transmitted through the second antenna 442 (RX1). , in the thirteenth slot, the third SRS may be transmitted through the third antenna 443 (RX2), and in the third slot, the fourth SRS may be transmitted through the fourth antenna 444 (RX3).

According to various embodiments, when the electronic device 101 is set to '2T4R', according to the setting of the RRC Reconfiguration, every SRS transmission period (eg, 10 ms, 20 ms, 40 ms, or 80 ms) in 20 slots (eg, 10 ms) 4 SRS can be transmitted at different times through each antenna. For example, the electronic device 101 may transmit the first SRS through the first antenna 441 (RX0) and transmit the second SRS through the second antenna 442 (RX1) at a first time point. The electronic device 101 may transmit the third SRS through the third antenna 443 (RX2) and transmit the fourth SRS through the fourth antenna 444 (RX3) at the second time point. According to various embodiments, the two antennas for transmitting the SRS at the first time point and the two antennas for transmitting the SRS at the second time point may be configured by combining other antennas as well as the combination of the antennas. For example, the electronic device 101 may transmit the first SRS through the first antenna 441 (RX0) and transmit the fourth SRS through the fourth antenna 444 (RX3) at a first time point. The electronic device 101 may transmit the third SRS through the third antenna 443 (RX2) and transmit the second SRS through the second antenna 442 (RX1) at the second time point.

According to various embodiments, the reference signal is a sounding reference signal (SRS) used for multi-antenna signal processing (eg, multiple-input multiple-output (MIMO) or beamforming) through uplink channel state measurement. ), but is not limited thereto. For example, although SRS is used as an example of the reference signal in the above description or the description to be described later, any type of uplink reference signal (eg, uplink demodulation reference (DM-RS)) transmitted from the electronic device 101 to the base station signal)) may also be included in a reference signal to be described later.

8 is a circuit diagram illustrating a detailed circuit of an electronic device according to various embodiments of the present disclosure; Referring to FIG. 8 , the electronic device 101 includes an RFIC 410 , a first RFFE 811 , a filter 812 , a first switch 813 (eg, SP3T or SP4T), a second switch 823 , It may include a first antenna 831 , a second antenna 832 , a third antenna 833 , a fourth antenna 834 , and a diplexer 840 . As described above with reference to FIG. 4 , the electronic device 101 illustrated in FIG. 8 may operate as '1T2R', '1T4R', or '2T4R'.

According to various embodiments, the RFIC 410, when transmitting, transmits a baseband signal generated by the communication processor 260 to a radio frequency (RF) signal used in the first communication network or the second communication network. can be converted to For example, the RFIC 410 may transmit an RF signal used for the first communication network to the first antenna 831 or the third antenna 833 through the first RFFE 811 and the first switch 813 . . In addition, when the first switch 813 can be connected to the second switch 823 through a separate connection line, the RFIC 410 is used for the first communication network output from the first RFFE 811 The RF signal may be transmitted to the second antenna 832 or the third antenna 833 . The RFIC 410 transmits an RF signal used for the first communication network or the second communication network to the second antenna 832 or the fourth antenna 834 through the second RFFE 821 and the second switch 823 . can be transmitted

According to various embodiments, at least one component (eg, filter 812 ) may be added between the first RFFE 811 and the first switch 813 , and for example, the filter 812 is an NR It may be a notch filter for preventing the band transmission signal from affecting the WIFI band signal (eg, 2.4 GHz). A diplexer 840 may be added between the second switch 823 and the second antenna 832 , and the diplexer 840 may process Mid/High band/Ultra High band signals. have. According to various embodiments, the filter 812 and/or the diplexer 840 in FIG. 8 may be omitted or replaced with other components.

According to the comparative example, as described above, different path loss may occur in each of the antenna transmission paths in the electronic device 101 because the length of each transmission path and components disposed on the transmission path are different. For example, referring to FIGS. 8 and 9 , in the electronic device 101 supporting 1T4R or 2T4R, each antenna (eg, a first antenna 831 , a first Since the transmission paths to the second antenna 832 , the third antenna 833 , or the fourth antenna 834 are different, path loss may appear differently. For example, the third antenna 833 may have a longer transmission path from the first RFFE 811 than the first antenna 831 , and thus a path loss may be relatively larger. For another example, the fourth antenna 834 may have a longer transmission path from the second RFFE 821 than the second antenna 832 , so that the path loss may be relatively larger. According to various embodiments, in FIG. 9 , the first antenna 831 and the second antenna 832 may be used as a transmitting antenna (Tx Ant) for 2T4R, and may also be used as a receiving antenna (Rx Ant). . The first antenna 831 and the second antenna 832 may be referred to as a main antenna. In FIG. 9 , the third antenna 833 and the fourth antenna 834 may be used as reception antennas Rx Ant for 2T4R, and may be referred to as sub antennas. The sub antennas (eg, the third antenna 833 and the fourth antenna 834) have a path loss compared to the main antennas (eg, the first antenna 831 and the second antenna 832). This could be bigger.

According to various embodiments, as shown in FIGS. 8 and 9, the transmission path transmitted from the first RFFE 811 to the third antenna 833 is not the main transmission path. A path loss of a certain value (eg, about 3 dB) may occur more than the transmission path. In addition, since the transmission path transmitted from the second RFFE 821 to the fourth antenna 834 is not the main transmission path, it has a predetermined value (eg, about 3 dB) compared to the transmission path transmitted to the second antenna 832 . Further losses may occur.

According to various embodiments, each of the antennas (eg, the first antenna 831 , the second The power loss corresponding to the transmission path to the antenna 832 , the third antenna 833 , or the fourth antenna 834 ) is referred to as a 'transmission path loss (Tx path loss)' or a 'path loss (PL). ', but the transmission path loss is not limited to the transmission path.

10, 11, 12, 13, 14, 15, and 16 are flowcharts for explaining a method of operating an electronic device according to various embodiments of the present disclosure. The operations of FIGS. 10, 11, 12, 13, 14, 15, and 16, which will be described later, may be applied to the electronic device of any one of FIGS. 4, 8, or 9 described above. Embodiments to which '1T4R' is applied in the embodiments to be described below may be equally or similarly applied to '1T2R'.

10 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure; The electronic device (eg, the electronic device 101 of FIG. 1 ) includes a communication processor 260 , at least one radio frequency integrated circuit (RFIC) 410 connected to the communication processor, and each of the at least one A plurality of RFICs and at least one radio frequency front-end (RFFE) (eg, 431, 432 of FIG. 4, or 811, 812 of FIG. 8) are connected through a circuit to transmit a signal corresponding to at least one communication network antennas (eg, 441 , 442 , 443 , 444 of FIG. 4 , or 831 , 832 , 833 , 834 of FIG. 8 ).

According to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may control to transmit antenna-related information to the base station of the first communication network. According to various embodiments, the antenna-related information may include information indicating that the electronic device supports one transmit antenna and four receive antennas. The antenna-related information may be transmitted by being included in the UE Capability Information message. The UE Capability Information message may include information related to the reception antenna of the electronic device 101 according to the contents of the UE Capability Inquiry message, such as 'supportedSRS-TxPortSwitch t1r4'. According to various embodiments, the electronic device may receive information related to a transmission time of a reference signal (eg, SRS) through each antenna from the base station. For example, the electronic device 101 may transmit a reference signal (eg, SRS) through one transmit antenna in a state set to '1T4R'.

Referring to FIG. 10 , according to various embodiments, in operation 1010 , the electronic device 101 (eg, the communication processor 260 of the electronic device) transmits a first reference signal (eg, SRS) through a first antenna. It can be checked whether data is transmitted through the second antenna at the time point.

According to various embodiments, when the electronic device does not transmit data through the second antenna as a result of the check in operation 1020, the first power is adjusted upward from the first power set for transmission of the reference signal. A reference signal may be transmitted through the antenna. For example, when the electronic device 101 does not transmit SCC data through the second antenna even though the maximum transmit power is limited to 20 dBm for PCC and SCC respectively during carrier aggregation (CA) operation, the first antenna The reference signal can be transmitted at 23 dBm, which is greater than the maximum transmission power of 20 dBm set in the PCC transmitted through the . According to various embodiments, various embodiments in which data is not transmitted through the second antenna will be described later in detail with reference to FIGS. 12 and 13 .

11 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure. The electronic device (eg, the electronic device 101 of FIG. 1 ) includes a communication processor 260 , at least one radio frequency integrated circuit (RFIC) 410 connected to the communication processor, and each of the at least one A plurality of RFICs and at least one radio frequency front-end (RFFE) (eg, 431, 432 of FIG. 4, or 811, 812 of FIG. 8) are connected through a circuit to transmit a signal corresponding to at least one communication network antennas (eg, 441 , 442 , 443 , 444 of FIG. 4 , or 831 , 832 , 833 , 834 of FIG. 8 ).

According to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may control to transmit antenna-related information to the base station of the first communication network. According to various embodiments, the first antenna group of the electronic device includes two antennas (eg, the first antenna 831 and the third antenna 833), and the second antenna group includes two antennas (eg, the first antenna 831 and the third antenna 833). For example, if the second antenna 832 and the fourth antenna 834) are included, the antenna-related information may include information indicating that the electronic device supports two transmit antennas and four receive antennas. . The antenna-related information may be transmitted by being included in the UE Capability Information message. The UE Capability Information message may include information related to the reception antenna of the electronic device 101 according to the contents of the UE Capability Inquiry message, such as 'supportedSRS-TxPortSwitch t2r4'. According to various embodiments, the electronic device may receive information related to a transmission time of a reference signal (eg, SRS) through each antenna from the base station.

Referring to FIG. 11 , according to various embodiments, the electronic device may check an SRS-related setting in operation 1110 . According to various embodiments, the electronic device may confirm that the SRS-related setting is set to '2T4R', and may identify information on when to transmit four SRSs based on information received from the base station.

According to various embodiments, in operation 1120 , the electronic device 101 (eg, the communication processor 260 of the electronic device) transmits a reference signal (eg, SRS) through the first antenna of the first antenna group at a first time point. may control to transmit the first reference signal through the first antenna with the second power adjusted upward from the first power set for transmission of the reference signal.

According to various embodiments, the electronic device uses a second antenna (eg, FIG. 8 ) of a second antenna group with a third power lower than the second power (eg, a third power lower than the first power) at the first time point. The second reference signal may be transmitted through the fourth antenna 834). For example, when the electronic device 101 is set to '2T4R' and transmits a reference signal through two antennas at the same time, a main antenna and a sub antenna may be combined to transmit the reference signals. For example, referring to FIGS. 8 and 9 , the electronic device 101 transmits a first reference signal through a first antenna 831 that is a main antenna among antennas connected to the first RFFE 811 at a first time point, and , at the same time, it is possible to control to transmit the second reference signal through the fourth antenna 834 that is a sub-antenna among the antennas connected to the second RFFE 821 . In this case, the power of the first reference signal transmitted through the first antenna 831 is adjusted upward to a second power greater than the preset first power and transmitted, and the first reference signal transmitted through the fourth antenna 834 is transmitted. The power of the second reference signal may be controlled to be transmitted with a third power lower than the second power.

According to various embodiments, the electronic device 101 transmits a third reference signal through a second antenna 832 that is a main antenna among antennas connected to the second RFFE 821 at a second time point after the first time point, and , at the same time, it is possible to control to transmit the fourth reference signal through the third antenna 833 that is a sub-antenna among the antennas connected to the first RFFE 811 . In this case, the power of the third reference signal transmitted through the second antenna 832 is adjusted upward to a second power greater than the preset first power and transmitted, and the second power transmitted through the third antenna 833 is transmitted. 4 The power of the reference signal may be controlled to be transmitted with a third power lower than the second power. A detailed description of the embodiment with respect to FIG. 11 will be described later with reference to FIGS. 14, 15, and 16 .

12 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure; The electronic device (eg, the electronic device 101 of FIG. 1 ) includes a communication processor 260 , at least one radio frequency integrated circuit (RFIC) 410 connected to the communication processor, and each of the at least one A plurality of antennas (eg, in FIG. 4 ) are connected to the RFIC and at least one radio frequency front-end (RFFE) 431, 432, 811, or 812 circuit to transmit a signal corresponding to at least one communication network. 441 , 442 , 443 , 444 , or 831 , 832 , 833 , 834 of FIG. 8 ).

According to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may control to transmit antenna-related information to the base station of the first communication network. According to various embodiments, the antenna-related information may include information indicating that the electronic device supports one transmit antenna and four receive antennas. The antenna-related information may be transmitted by being included in the UE Capability Information message. The UE Capability Information message may include information related to the reception antenna of the electronic device 101 according to the contents of the UE Capability Inquiry message, such as 'supportedSRS-TxPortSwitch t1r4'. According to various embodiments, the electronic device may receive information related to a transmission time of a reference signal (eg, SRS) through each antenna from the base station. For example, the electronic device 101 may transmit a reference signal (eg, SRS) to one transmit antenna at a time set in a state set to '1T4R'.

Referring to FIG. 12 , according to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may activate uplink carrier aggregation (CA) in operation 1210 . The CA may collectively refer to methods capable of providing a high data rate by transmitting data through a plurality of component carriers (CCs). For example, the electronic device (eg, the electronic device 101 of FIG. 1 ) may transmit/receive data by receiving one or a plurality of frequency bandwidths (eg, 80 MHz) among all allocable bandwidths (eg, 100 MHz). The electronic device 101 may provide a high data rate by transmitting data by integrating a plurality of bandwidths. Here, each CC may be referred to as a cell, one CC may be referred to as a primary CC (Pcell or SpCell) or PCC, and other CCs may be referred to as secondary CCs (SCells) or SCCs. The base station can effectively distribute the load to the plurality of electronic devices within the coverage of the base station by enabling the electronic device that requires a higher data rate to operate by activating a larger number of CCs. According to various embodiments, the electronic device 101 may control to transmit a signal corresponding to the PCC through the first antenna and transmit the signal corresponding to the SCC through the second antenna, but is not limited thereto. For example, the electronic device 101 may control to transmit a signal corresponding to the PCC and at least a portion of the signal corresponding to the SCC together through one antenna (eg, the first antenna). For example, the signal corresponding to the PCC and the signal corresponding to the first SCC are transmitted through the first antenna, and the signal corresponding to the second SCC and the signal corresponding to the third SCC are transmitted through the second antenna. have.

According to various embodiments, the electronic device may check the SRS setting related to the activated CA in operation 1220 . For example, the electronic device 101 may be configured to transmit SRS through PCC and SCC, or may be configured to transmit SRS only through PCC.

According to various embodiments, as a result of the check in operation 1230, when SRS is set to transmit only for PCC (operation 1230 - Yes), in operation 1240, the electronic device may increase the SRS transmission power from the set power. When the SRS is set to transmit only for PCC, the transmit power of the antenna may not be limited because the signal is not transmitted in the SCC band during the time the SRS is transmitted in the PCC band. For example, it may be assumed that the maximum transmit power for transmitting the PCC is limited to 20 dBm and the maximum transmit power for transmitting the SCC is limited to 20 dBm. According to various embodiments, when it is configured to transmit only PCC when transmitting SRS, the first antenna for transmitting PCC may be controlled to transmit SRS from 20 dBm to 23 dBm adjusted upward.

According to various embodiments, the electronic device may transmit the SRS with the set power in operation 1250 . For example, when the electronic device 101 is configured to transmit the SRS only for the PCC in a state where the uplink CA is set, the SRS transmit power may be adjusted upward from the limited transmit power. According to various embodiments, the base station may allocate a relatively higher MSC level to the electronic device 101 as the electronic device receives the transmitted SRS by adjusting the SRS transmission power up by performing operation 1240 . The electronic device 101 may transmit relatively more data based on the higher MSC level allocated from the base station.

According to various embodiments, if the electronic device is configured to transmit the SRS also for the SCC in operation 1230 (operation 1230 - NO), in operation 1250 , the electronic device may control to transmit the SRS with a preset power. According to various embodiments, the electronic device 101 transmits a signal corresponding to the PCC to the first antenna through a physical uplink shared channel (PUSCH) as the uplink CA is activated, and simultaneously to the second antenna. A signal corresponding to the SCC may be transmitted through the PUSCH. For example, the electronic device 101 may transmit a signal corresponding to the PCC based on the maximum transmit power of 20 dBm through the first antenna and simultaneously transmit the signal corresponding to the SCC through the second antenna based on the maximum transmit power of 20 dBm. have.

13 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure; The electronic device (eg, the electronic device 101 of FIG. 1 ) includes a communication processor 260 , at least one radio frequency integrated circuit (RFIC) 410 connected to the communication processor, and each of the at least one A plurality of RFICs and at least one radio frequency front-end (RFFE) (eg, 431, 432 of FIG. 4, or 811, 812 of FIG. 8) are connected through a circuit to transmit a signal corresponding to at least one communication network antennas (eg, 441 , 442 , 443 , 444 of FIG. 4 , or 831 , 832 , 833 , 834 of FIG. 8 ).

According to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may control to transmit antenna-related information to the base station of the first communication network. According to various embodiments, the antenna-related information may include information indicating that the electronic device supports one transmit antenna and four receive antennas. The antenna-related information may be transmitted by being included in the UE Capability Information message. The UE Capability Information message may include information related to the reception antenna of the electronic device 101 according to the contents of the UE Capability Inquiry message, such as 'supportedSRS-TxPortSwitch t1r4'. According to various embodiments, the electronic device may receive information related to a transmission time of a reference signal (eg, SRS) through each antenna from the base station. For example, the electronic device 101 may transmit a reference signal (eg, SRS) to one transmit antenna at a time set in a state set to '1T4R'.

Referring to FIG. 13 , according to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may operate with Tx diversity through a plurality of antennas in operation 1310 .

According to various embodiments, in operation 1320 , the electronic device may check the SRS related setting while operating with the Tx diversity.

According to various embodiments, as a result of the check in operation 1330, when the SRS-related setting is set to '1T4R' (operation 1330 - Yes), in operation 1340, the electronic device may upwardly adjust the SRS transmission power from the set power. When the electronic device 101 operates with Tx diversity through a plurality of antennas, if the SRS is set to '1T4R' and operates, the SRS may be transmitted only through the main antenna during SRS transmission. For example, while the SRS is transmitted through the primary antenna, since the other antenna does not transmit a signal, the transmit power of the antenna may not be controlled. For example, the electronic device 101 may assume that the maximum transmit power of the first antenna is limited to 20 dBm and the maximum transmit power of the second antenna is limited to 20 dBm among the plurality of antennas operating with Tx diversity. According to various embodiments, when SRS transmission is set to '1T4R', SRS is transmitted only for the first antenna, and the first antenna for transmitting the SRS is adjusted upward by an offset (eg, 3 dB) set from 20 dBm to 23 dBm. It can be controlled to transmit SRS.

According to various embodiments, the electronic device may transmit the SRS with the set power in operation 1350 . For example, when the SRS is set to '1T4R' in a state in which the electronic device 101 is set to transmit signals through a plurality of antennas as it operates with Tx diversity, the transmit power of the SRS is set offset (eg, It can be transmitted by adjusting it upward by 3 dB). According to various embodiments, the base station may allocate a relatively higher MSC level to the electronic device 101 as the base station receives the SRS transmitted by adjusting the power upward. The electronic device 101 may transmit relatively more data based on the higher MSC level allocated from the base station.

According to various embodiments, when SRS is not set to '1T4R' in operation 1330 (eg, when SRS is not set) (operation 1330 - NO), the electronic device transmits data with power set according to Tx diversity. can be controlled According to various embodiments, the electronic device 101 may transmit the first transmission signal Tx0 and the second transmission signal Tx1 to the first antenna and through the second antenna, respectively, as it operates with Tx diversity. , a transmission signal to be transmitted may be transmitted including the PUSCH, respectively. For example, the electronic device 101 transmits the first transmission signal Tx0 (eg, PUSCH) through the first antenna based on 20 dBm, which is the maximum transmission power P _Tx0 set for the first transmission signal, At the same time, the second transmission signal Tx1 (eg, PUSCH) may be transmitted through the second antenna based on 20 dBm, which is the maximum transmission power P _Tx1 set for the second transmission signal.

According to various embodiments, the operation described with reference to FIG. 13 may be implemented as shown in Table 2 below.

Symbol number in a slot 0 One 2 3 4 5 6 7 8 9 10 11 12 13 Tx0 PUSCH PUSCH PUSCH DMRS PUSCH PUSCH PUSCH PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS Tx1 PUSCH PUSCH PUSCH DMRS PUSCH PUSCH PUSCH PUSCH PUSCH PUSCH DMRS PUSCH PUSCH X P _Tx0 20 20 20 20 20 20 20 20 20 20 20 20 20 23 P _Tx1 20 20 20 20 20 20 20 20 20 20 20 20 20 X

Referring to <Table 2>, the electronic device 101 may transmit data through a set slot, and one slot may include 14 symbols. For example, data corresponding to a physical uplink shared channel (PUSCH) is transmitted in symbols 0, 1, 2, 4, 5, 6, 7, 8, 9, 11, and 12. can Data corresponding to a demodulation reference signal (DMRS) may be transmitted to symbols 3 and 10. As the electronic device operates with Tx diversity through a plurality of antennas (eg, the first antenna and the second antenna), the maximum power (eg, Tx0, Tx1) of each transmission signal (eg, Tx0, Tx1) transmitted through each antenna P _Tx0 , P _Tx1 ) may be set to 20 dBm, respectively.

According to various embodiments, an SRS may be transmitted on symbol 13. For example, the SRS may be transmitted through the first antenna instead of the PUSCH as the first transmission signal Tx0, and in this case, the second transmission signal Tx1 may not be transmitted. According to various embodiments, at the time when the SRS is transmitted (eg, symbol 13), the maximum transmission power may be reset to 23 dBm, which is higher than the preset maximum power of 20 dBm for the first transmission signal. The electronic device 101 may transmit the SRS based on the up-adjusted maximum transmission power of 23 dBm.

14 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure. The electronic device (eg, the electronic device 101 of FIG. 1 ) includes a communication processor 260 , at least one radio frequency integrated circuit (RFIC) 410 connected to the communication processor, and each of the at least one A plurality of RFICs and at least one radio frequency front-end (RFFE) (eg, 431, 432 of FIG. 4, or 811, 812 of FIG. 8) are connected through a circuit to transmit a signal corresponding to at least one communication network antennas (eg, 441 , 442 , 443 , 444 of FIG. 4 , or 831 , 832 , 833 , 834 of FIG. 8 ).

According to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may control to transmit antenna-related information to the base station of the first communication network. According to various embodiments, the first antenna group of the electronic device includes two antennas (eg, the first antenna 831 and the third antenna 833), and the second antenna group includes two antennas (eg, the first antenna 831 and the third antenna 833). For example, if the second antenna 832 and the fourth antenna 834) are included, the antenna-related information may include information indicating that the electronic device supports two transmit antennas and four receive antennas. . The antenna-related information may be transmitted by being included in the UE Capability Information message. The UE Capability Information message may include information related to the reception antenna of the electronic device 101 according to the contents of the UE Capability Inquiry message, such as 'supportedSRS-TxPortSwitch t2r4'. According to various embodiments, the electronic device may receive information related to a transmission time of a reference signal (eg, SRS) through each antenna from the base station. For example, the electronic device 101 may simultaneously transmit reference signals (eg, SRS) through two antennas at a time set in a state set to '2T4R'.

Referring to FIG. 14 , according to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may operate in UL-MIMO through a plurality of antennas in operation 1410 .

According to various embodiments, in operation 1420, the electronic device may check the SRS-related configuration while operating in the UL-MIMO.

According to various embodiments, as a result of the check in operation 1430, when the SRS-related setting is set to '2T4R' (operation 1430 - Yes), in operation 1440, in operation 1440, the first set for transmission of the reference signal It is possible to control the transmission of the first reference signal through the first antenna of the first antenna group with the second power adjusted upward from the power. The electronic device may control to transmit a second reference signal through a second antenna of a second antenna group with a third power lower than the second power at the first time point. When the electronic device 101 operates in UL-MIMO through a plurality of antennas, if the SRS is set to '2T4R' and operates, the SRS may be simultaneously transmitted through the first antenna and the second antenna during SRS transmission. For example, the electronic device may transmit the SRS as shown in Table 3 below.

Symbol number in a slot 0 One 2 3 4 5 6 7 8 9 10 11 12 13 Tx0 PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS Tx1 PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS

Referring to <Table 3>, the electronic device 101 may transmit data through a set slot, and one slot may include 14 symbols. For example, data corresponding to a physical uplink shared channel (PUSCH) may be transmitted to symbols 0, 1, 2, 4, 5, 7, 8, 9, 11, and 12. Data corresponding to a demodulation reference signal (DMRS) may be transmitted to symbols 3 and 10. According to various embodiments, SRS may be transmitted to symbols 6 and 13. As the electronic device is set to '2T4R', the SRS may be simultaneously transmitted through the first antenna and the second antenna.

According to various embodiments, with reference to FIGS. 8 and 9 together, to the first antenna 831 (eg, main antenna) and the third antenna 833 (eg, sub-antenna) through the first RFFE 811 . The SRS may be transmitted, and the SRS may be transmitted to the second antenna 832 (eg, main antenna) and the fourth antenna 834 (eg, sub-antenna) through the second RFFE 821 . As described above, since the third antenna 833 and the fourth antenna 834 are sub antennas rather than the main antenna, they may not be used as transmit antennas. Compared to the main antenna (eg, the first antenna 831 and the second antenna 832 ), the third antenna 833 and the fourth antenna 834 have a path loss (PL) of a constant value (eg, 3 dB) may be added to reduce the transmit power output through the actual antenna.

According to various embodiments, when the maximum transmit power of the electronic device 101 is 23 dBm, the maximum transmit power of each main antenna may be set to 20 dBm according to UL-MIMO operation. According to various embodiments, when SRS is transmitted based on '2T4R', the SRS maximum transmission power of the main antenna may be set to increase by simultaneously transmitting the SRS by combining the main antenna and the sub antenna. For example, as shown in Table 4 below, the SRS maximum transmit power of the main antenna may be adjusted higher than a set value, and the SRS maximum transmit power of the sub-antenna that transmits simultaneously may be adjusted further down than the set value.

Symbol number in a slot 0 One 2 3 4 5 6 7 8 9 10 11 12 13 Tx0 PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS #One PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS #3 Tx1 PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS #4 PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS #2 P _Tx0 20 20 20 20 20 20 22 20 20 20 20 20 20 16 P _Tx1 20 20 20 20 20 20 16 20 20 20 20 20 20 22

Referring to <Table 4>, as the electronic device 101 operates as '2T4R', in symbol 6, SRS is simultaneously transmitted through the first antenna 831 as the main antenna and the fourth antenna 834 as the sub antenna. can be transmitted According to various embodiments, the maximum transmit power of the SRS transmitted through the first antenna 831, which is the main antenna, is greater than the value set at 20 dBm, which is the maximum transmit power P _Tx0 set in response to the first transmit signal Tx0. It may be set to an upwardly adjusted 22 dBm, and the maximum transmit power of the SRS transmitted through the fourth antenna 834, which is a sub-antenna, is set in response to the second transmit signal _Tx1 . It may be set to 16 dBm adjusted further down than the set value. Since 22 dBm is about 158.5 mW and 16 dBm is about 39.9 mW, even if the two signals are summed (158.5+39.9 = 198.4 => 22.98 dBm), it can be set to be smaller than 23 dBm, which is the maximum transmission power set for the electronic device 101 . have.

According to various embodiments, as the electronic device 101 operates as '2T4R', in symbol 13, the SRS may be simultaneously transmitted through the second antenna 832 as the main antenna and the third antenna 833 as the sub antenna. . According to various embodiments, the maximum transmit power of the SRS transmitted through the second antenna 832, which is the main antenna, is greater than the value set at 20 dBm, which is the maximum transmit power P _Tx1 set in response to the second transmit signal Tx1. It may be set to an upwardly adjusted 22 _dBm , and the maximum transmit power of the SRS transmitted through the third antenna 833, which is a sub-antenna, is set in response to the first transmit signal Tx0. It may be set to 16 dBm adjusted further down than the set value. According to various embodiments, when a relatively high MCS level is allocated by upwardly adjusting the maximum transmission power for the SRS, throughput may be increased as shown in Table 5 below.

SNR UL MCS UL Throughput One 17 22.77 45.95 Mbps 2 16.53 18.71 30.61 Mbps 3 15.53 13.7 21.35 Mbps 4 12.32 10.24 10.84 Mbps

Referring to <Table 5>, as the maximum transmission power for the SRS is adjusted upward, the electronic device may transmit the SRS with the increased power. As the base station receives the increased power SRS, the base station may allocate a relatively higher MCS level based on the increased SNR. The electronic device may increase the transmission rate by transmitting data by the higher MCS level assignment.

According to various embodiments, when the electronic device 101 supports UL-MIMO as described with reference to FIG. 14 , an antenna impedance tuner (AIT) configured for each antenna or an antenna impedance tuning circuit is set The value can be reset. The set value of the antenna impedance tuner may be stored in the communication processor (CP) 260 in the form of a code. According to various embodiments, the electronic device 101 may change the resonance characteristic (eg, the resonance frequency of the antenna) of the connected antenna according to a change in an on/off state of a switch included in the antenna impedance tuner. A combination of on/off states of the switch may be referred to as an antenna setting, and depending on the antenna setting, an antenna resonance characteristic may be changed or an antenna efficiency of an antenna may be changed.

According to various embodiments, when the maximum transmit power is reset during SRS transmission as shown in Table 4, the setting code of the antenna impedance tuner may be changed as shown in Table 6 below.

Symbol number in a slot 0 One 2 3 4 5 6 7 8 9 10 11 12 13 Tx0 PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS #One PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS #3 Tx1 PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS#4 PUSCH PUSCH PUSCH DMRS PUSCH PUSCH SRS #2 P _Tx0 20 20 20 20 20 20 22 20 20 20 20 20 20 16 P _Tx1 20 20 20 20 20 20 16 20 20 20 20 20 20 22 AIT
code 2 2 2 2 2 2 One 2 2 2 2 2 2 3

Referring to <Table 6>, when the electronic device transmits PUSCH data through a plurality of antennas, a first transmission signal Tx0 and a second transmission signal Tx0 with respect to the first antenna 831 and the second antenna 832 are transmitted. The antenna impedance tuner may be set with a code (eg, code #2) that allows the signal Tx1 to have maximum efficiency at the same time. According to various embodiments, when the SRS is transmitted in symbol 6 of Table 6, a code (eg, an SRS configured to adjust the maximum transmission power upward for the first antenna 831) has maximum efficiency (eg, , code #1) to set the antenna impedance tuner. When the SRS is to be transmitted in symbol 13 of Table 6, a code (eg, code #3) that allows the SRS configured to adjust the maximum transmission power up for the second antenna 832 to have maximum efficiency. You can set the antenna impedance tuner.

According to various embodiments, as shown in FIG. 14 , when the MCS level is allocated by increasing the maximum transmission power for the SRS, when the PUSCH data is transmitted, the maximum transmission power may be decreased again. In this case, the block error rate (BLER) may increase due to the high MCS level allocated according to the SRS, and thus performance may be further deteriorated. The BLER of the uplink may occur when the transmission quality is deteriorated and the error vector magnitude (EVM) is lowered. The possibility that the EVM will be deteriorated due to the deterioration of the transmit power in the same modulation order is low. According to various embodiments, when a relatively high MCS level is allocated by increasing the maximum transmission power for the SRS, UL BLER may occur and performance degradation may occur. According to various embodiments, when the MCS level average for a recent predetermined time corresponds to a value that causes a change in the modulation order, it is possible to control not to increase the maximum transmit power for the SRS.

For example, the table for the MCS level may be defined as shown in <Table 7>.

Referring to <Table 7>, when the electronic device is an MCS index in which a modulation order (MO) is increased according to an increase in the MCS level due to an increase in the maximum transmit power for the SRS (eg, the MCS index) , when the MCS index, which is the boundary at which the modulation order is changed, is 4, 10, 19), it is possible to control so as not to adjust the maximum transmission power for the SRS upward.

According to various embodiments, as a result of the check in operation 1430, in operation 1430, when the SRS-related setting is not set to '2T4R' (eg, when SRS is not configured) (operation 1430 - NO), in operation 1460 UL-MIMO It can be controlled to transmit data with power set according to the operation.

15 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure; The electronic device (eg, the electronic device 101 of FIG. 1 ) includes a communication processor 260 , at least one radio frequency integrated circuit (RFIC) 410 connected to the communication processor, and each of the at least one A plurality of antennas (eg, in FIG. 4 ) are connected to the RFIC and at least one radio frequency front-end (RFFE) 431, 432, 811, or 812 circuit to transmit a signal corresponding to at least one communication network. 441 , 442 , 443 , 444 , or 831 , 832 , 833 , 834 of FIG. 8 ).

According to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may control to transmit antenna-related information to the base station of the first communication network. According to various embodiments, information indicating that the electronic device supports two transmit antennas and four receive antennas may be included. The antenna-related information may be transmitted by being included in the UE Capability Information message. The UE Capability Information message may include information related to the reception antenna of the electronic device 101 according to the contents of the UE Capability Inquiry message, such as 'supportedSRS-TxPortSwitch t2r4'. According to various embodiments, the electronic device may receive information related to a transmission time of a reference signal (eg, SRS) through each antenna from the base station. For example, the electronic device 101 may transmit a reference signal (eg, SRS) at a time set in a state set to '2T4R'.

Referring to FIG. 15 , according to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may operate in UL-MIMO through a plurality of antennas in operation 1510 .

According to various embodiments, when the electronic device is configured to transmit/receive signals transmitted/received through each of the plurality of antennas using time division multiplexing (TDD), TDD slot configuration (eg, uplink slot, downlink slot) is performed in operation 1520. can be checked

According to various embodiments, as a result of the check in operation 1530, when the electronic device corresponds to the uplink transmission slot of the first antenna and the time point at which the first reference signal is transmitted (operation 1530 - Yes), in operation 1540 the reference signal is It is possible to control to transmit the first reference signal through the first antenna with the second power adjusted upward from the first power set for transmission. The electronic device may control not to transmit a signal through the second antenna in the corresponding slot. As a result of the check in operation 1530, when the electronic device does not correspond to the time point at which the first reference signal of the first antenna is transmitted (operation 1530 - NO), the electronic device operates in UL-MIMO through the first antenna and the second antenna It can be controlled to transmit PUSCH data.

According to various embodiments, when the electronic device 101 operates in TDD, the slot format of data transmitted and received through the respective antennas may be set to be the same or different. According to various embodiments, the electronic device 101 may receive the slot format according to the TDD operation from the base station. According to another embodiment, the electronic device 101 may reconfigure the slot format according to the TDD operation and transmit it to the base station.

When the above operation is represented in a table, it can be represented as in Table 8 below.

Format slot configuration 0 One 2 3 4 ANT 1 D D D X U ANT 2 D D D U X ANT 1
Max power x x x x 23 ANT 2
Max power x x x 23 x

Referring to <Table 8>, as the electronic device 101 operates in UL-MIMO and TDD, slots 0, 1, and 2 transmit downlink signals through the first and second antennas. can receive Slots 3 and 4 may be configured to transmit uplink signals. For example, the electronic device may transmit the SRS through the second antenna as the second transmission signal Tx1 in slot 3, and may transmit the SRS through the first antenna as the first transmission signal Tx0 in slot 4 . According to various embodiments, when the electronic device transmits the SRS through the second antenna in the third slot, the electronic device may set the slot so that the first transmission signal Tx0 is not transmitted through the first antenna. According to various embodiments, when the electronic device transmits the SRS through the first antenna in slot 4, the electronic device may set the slot so that the second transmission signal Tx1 is not transmitted through the second antenna. According to various embodiments, the slot configuration may be implemented such that the base station sets and transmits the configuration information to the electronic device 101 , or the electronic device 101 sets and transmits the configuration information to the base station.

16 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure; The electronic device (eg, the electronic device 101 of FIG. 1 ) includes a communication processor 260 , at least one radio frequency integrated circuit (RFIC) 410 connected to the communication processor, and each of the at least one A plurality of RFICs and at least one radio frequency front-end (RFFE) (eg, 431, 432 of FIG. 4, or 811, 812 of FIG. 8) are connected through a circuit to transmit a signal corresponding to at least one communication network antennas (eg, 441 , 442 , 443 , 444 of FIG. 4 , or 831 , 832 , 833 , 834 of FIG. 8 ).

According to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may control to transmit antenna-related information to the base station of the first communication network. According to various embodiments, information indicating that the electronic device supports two transmit antennas and four receive antennas may be included. The antenna-related information may be transmitted by being included in the UE Capability Information message. The UE Capability Information message may include information related to the reception antenna of the electronic device 101 according to the contents of the UE Capability Inquiry message, such as 'supportedSRS-TxPortSwitch t2r4'. According to various embodiments, the electronic device may receive information related to a transmission time of a reference signal (eg, SRS) through each antenna from the base station. For example, the electronic device 101 may transmit a reference signal (eg, SRS) at a time set in a state set to '2T4R'.

Referring to FIG. 16 , according to various embodiments, the electronic device 101 (eg, the communication processor 260 of the electronic device) may operate in UL-MIMO through a plurality of antennas in operation 1610 . According to various embodiments, when a signal transmitted and received through each of a plurality of antennas is configured to be transmitted and received through time division multiplexing (TDD), the electronic device configures a TDD slot (eg, an uplink slot, a downlink slot) in operation 1620. can be checked

According to various embodiments, as a result of the check in operation 1630, when the electronic device corresponds to the uplink transmission slot of the first antenna and the time point at which the first reference signal is transmitted (operation 1630 - Yes), in operation 1640, the reference signal is It is possible to control to transmit the first reference signal through the first antenna with the second power adjusted upward from the first power set for transmission. The electronic device may control to receive downlink data through the second antenna in the corresponding slot. As a result of the check in operation 1630, when the electronic device does not correspond to the time point at which the first reference signal of the first antenna is transmitted (operation 1630 - NO), the electronic device operates in UL-MIMO through the first antenna and the second antenna It can be controlled to transmit PUSCH data.

According to various embodiments, when the electronic device 101 operates in TDD, the slot format of data transmitted and received through the respective antennas may be set to be the same or different. According to various embodiments, the electronic device 101 may receive the slot format according to the TDD operation from the base station. According to another embodiment, the electronic device 101 may reconfigure the slot format according to the TDD operation and transmit it to the base station.

If the above operation is represented in a table, it can be represented as in Table 9 below.

Format slot configuration 0 One 2 3 4 Tx0 D D D D U Tx1 D D D U D P _Tx0 x x x x 23 P _Tx1 x x x 23 x

Referring to <Table 9>, as the electronic device 101 operates in UL-MIMO and TDD, slots 0, 1, and 2 transmit downlink signals through the first and second antennas. can receive Slots 3 and 4 may be configured to transmit uplink signals. For example, the electronic device may transmit the SRS through the second antenna as the second transmission signal Tx2 in slot 3, and may transmit the SRS through the first antenna as the first transmission signal Tx0 in slot 4 . According to various embodiments, when the electronic device transmits the SRS through the second antenna in the third slot, the electronic device may set the slot to receive the downlink signal through the first antenna. According to various embodiments, when the electronic device transmits the SRS through the first antenna in slot 4, the electronic device may set the slot to receive a downlink signal through the second antenna. According to various embodiments, the slot configuration may be implemented such that the base station sets and transmits the configuration information to the electronic device 101 or sets the electronic device 101 and transmits the configuration information to the base station.

According to various embodiments, the slot format according to the TDD operation may be set in various ways as shown in Table 10 below.

Symbol Number in a slot Format 0 One 2 3 4 5 6 7 8 9 10 11 12 13 0 D D D D D D D D D D D D D D One U U U U U U U U U U U U U U 2 F F F F F F F F F F F F F F 3 D D D D D D D D D D D D D F 4 D D D D D D D D D D D D F F 5 D D D D D D D D D D D F F F 6 D D D D D D D D D D F F F F 7 D D D D D D D D D F F F F F 8 F F F F F F F F F F F F F U 9 F F F F F F F F F F F F U U 10 F U U U U U U U U U U U U U 11 F F U U U U U U U U U U U U 12 F F F U U U U U U U U U U U 13 F F F F U U U U U U U U U U 14 F F F F F U U U U U U U U U 15 F F F F F F U U U U U U U U

Referring to <Table 10>, when the electronic device 101 is configured as a slot including a flexible symbol such as format 8 for slot 3, SRS is transmitted through the first antenna, It can be configured to receive a downlink signal through the second antenna.

16, when uplink data is transmitted through the first antenna and downlink data is received through the second antenna at the same time point, in order to reduce inter-signal interference between the first antenna and the second antenna, can be isolated.

The electronic device 101 according to any one of various embodiments includes a communication processor 260 , at least one radio frequency integrated circuit (RFIC) 410 connected to the communication processor, and the at least one RFIC at least one radio frequency front-end (RFFE) circuit 431 , 432 connected to and configured to process a transmission signal, comprising a plurality of antennas 441 , 442 , 443 , 444 connected through the at least one RFFE circuit and, the communication processor checks whether data is transmitted through a second antenna among the plurality of antennas at a first time point when a reference signal is transmitted through a first antenna among the plurality of antennas, , as a result of the check, when data is not transmitted through the second antenna, it is possible to control to transmit the reference signal to the base station with the second power adjusted upward from the first power set for transmission of the reference signal.

According to various embodiments, the reference signal may include a sounding reference signal (SRS) used for multi-antenna signal processing through uplink channel state measurement.

According to various embodiments, the second power may be set based on the maximum transmittable power set for the electronic device.

According to various embodiments, the communication processor transmits the reference signal through the first antenna through which a primary component carrier (PCC) signal is transmitted during a carrier aggregation operation, and a secondary component carrier (SCC) signal is transmitted. ) can be controlled not to transmit a signal through the second antenna through which the signal is transmitted.

According to various embodiments, the communication processor may set not to transmit and receive signals through the second antenna at the first time point when the uplink signal and the downlink signal operate in a time division multiplexing scheme. .

According to various embodiments, when the uplink signal and the downlink signal operate in a time division multiplexing scheme, the communication processor is configured not to transmit/receive a signal through the second antenna at the first time point. It can be received from the base station.

According to various embodiments, when the uplink signal and the downlink signal operate in a time division multiplexing scheme, the communication processor may be configured to receive a signal through the second antenna at the first time point.

According to various embodiments, when the uplink signal and the downlink signal operate in a time division multiplexing scheme, the communication processor may receive information configured to receive a signal through the second antenna at the first time point. It can be received from the base station.

The electronic device 101 according to any one of various embodiments includes a communication processor 260 , at least one radio frequency integrated circuit (RFIC) 410 connected to the communication processor, and the at least one RFIC a first radio frequency front-end (RFFE) circuit 431 coupled to and configured to process a transmission signal, a second RFFE circuit 432 coupled to the at least one RFIC and configured to process a transmission signal, each of the first RFFE A first antenna group (441, 443) including a plurality of antennas connected through a circuit and transmitting a signal corresponding to at least one communication network, and each connected through the second RFFE circuit to at least one communication network and a second antenna group (442, 444) including a plurality of antennas for transmitting corresponding signals, wherein the communication processor is configured to: at a first time point to transmit a reference signal through the plurality of antennas, the Control to transmit a first reference signal to a base station through a first antenna of the first antenna group with a second power adjusted upward from a first power set for transmission of a reference signal, and at the first time point, the second power It is possible to control to transmit a second reference signal to the base station through a second antenna of the second antenna group with a third power lower than that of the second antenna group.

According to various embodiments, the reference signal may include a sounding reference signal (SRS) used for multi-antenna signal processing through uplink channel state measurement.

According to various embodiments, a transmission path of a signal transmitted through the second antenna may have a greater path loss than a transmission path of a signal transmitted through the first antenna.

According to various embodiments, the communication processor may be configured to use a fourth power adjusted upward from a first power configured for transmission of the reference signal at a second time point at which a reference signal is transmitted among the plurality of antennas. control to transmit a third reference signal to the base station through a third antenna among It can be controlled to transmit to the base station.

According to various embodiments, a transmission path of a signal transmitted through the fourth antenna may have a greater path loss than a transmission path of a signal transmitted through the third antenna.

According to various embodiments, the communication processor may control to change an impedance tuner setting value for the third antenna at the second time point.

According to various embodiments, the communication processor checks an average of a modulation and coding scheme (MCS) for a predetermined time before the first time point, and when the average of the checked MCS falls within a set range, the first A reference signal may be controlled to be transmitted with the first power.

The method according to any one of various embodiments includes a communication processor, at least one radio frequency integrated circuit (RFIC) connected to the communication processor, and at least one connected to the at least one RFIC and configured to process a transmission signal A method for transmitting a reference signal in an electronic device including a radio frequency front-end (RFFE) circuit of a plurality of antennas connected through the at least one RFFE circuit, comprising: a first antenna among the plurality of antennas An operation of determining whether data is transmitted through a second antenna among the plurality of antennas at a first time point when a reference signal is transmitted through the If not, the method may include controlling to transmit the reference signal to the base station with the second power adjusted upward from the first power set for the transmission of the reference signal.

According to various embodiments, the reference signal may include a sounding reference signal (SRS) used for multi-antenna signal processing through uplink channel state measurement.

According to various embodiments, the second power may be set based on the maximum transmittable power set for the electronic device, and the electronic device may transmit a reference signal.

According to various embodiments, the method transmits the reference signal through the first antenna through which a primary component carrier (PCC) signal is transmitted, and a secondary component carrier (SCC) during a carrier aggregation operation. It is possible to control not to transmit a signal through the second antenna through which a signal is transmitted.

According to various embodiments, when the uplink signal and the downlink signal operate in a time division multiplexing scheme, the method may control so as not to transmit/receive a signal through the second antenna at the first time point .

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a computer device, a portable communication device (eg, a smartphone), a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

The various embodiments of this document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, but it should be understood to include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. As used herein, “A or B”, “at least one of A and B”, “at least one of A or B,” “A, B or C,” “at least one of A, B and C,” and “A , B, or C" each may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as “first”, “second”, or “first” or “second” may simply be used to distinguish the component from other components in question, and may refer to components in other aspects (e.g., importance or order) is not limited. that one (eg first) component is “coupled” or “connected” to another (eg, second) component with or without the terms “functionally” or “communicatively” When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

As used herein, the term “module” may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as, for example, logic, logic block, component, or circuit. A module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document include software (eg, one or more instructions stored in a storage medium (eg, internal memory or external memory) readable by a machine (eg, a master device or a task performing device)) For example, it can be implemented as a program). For example, a processor of a device (eg, a master device or a task performing device) may call at least one of one or more instructions stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a device-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play Store™) or on two user devices (eg, It can be distributed online (eg download or upload), directly between smartphones (eg smartphones). In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, a module or a program) of the above-described components may include a singular or a plurality of entities. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.

101 electronic device 120 processor
130: memory 190: communication module
197: antenna module 212: first communication processor
214: second communication processor 222: first RFIC
224: second RFIC 226: third RFIC
232: first RFFE 234: second RFFE
236: third RFFE 238: phase converter
238: fourth RFIC 242: first antenna module
244: second antenna module 260: communication processor
410: RFIC 431: first RFFE
432: second RFFE 441: first antenna
442: second antenna 443: third antenna
444: fourth antenna 451: first switch
452: second switch

Claims (20)

In an electronic device,
communication processor;
at least one radio frequency integrated circuit (RFIC) coupled to the communication processor;
at least one radio frequency front-end (RFFE) circuit coupled to the at least one RFIC and configured to process a transmission signal; and
A plurality of antennas connected through the at least one RFFE circuit,
The communication processor,
At a first time point when a reference signal is transmitted through a first antenna among the plurality of antennas, it is checked whether data is transmitted through a second antenna among the plurality of antennas,
As a result of the check, when data is not transmitted through the second antenna, the electronic device controls to transmit the reference signal to the base station with a second power adjusted upward from the first power set for transmission of the reference signal.
According to claim 1, wherein the reference signal,
An electronic device comprising a sounding reference signal (SRS) used for multi-antenna signal processing through uplink channel state measurement.
According to claim 1, wherein the second power,
The electronic device is set based on the maximum transmittable power set for the electronic device.
According to claim 1, wherein the communication processor,
During a carrier aggregation operation, the reference signal is transmitted through the first antenna through which a primary component carrier (PCC) signal is transmitted, and through the second antenna through which a secondary component carrier (SCC) signal is transmitted. An electronic device that controls not to transmit a signal.
According to claim 1, wherein the communication processor,
When an uplink signal and a downlink signal operate in a time division multiplexing scheme, the electronic device is configured to not transmit/receive signals through the second antenna at the first time point.
According to claim 1, wherein the communication processor,
When an uplink signal and a downlink signal operate in a time division multiplexing scheme, the electronic device receives, from the base station, information configured not to transmit/receive a signal through the second antenna at the first time point.
According to claim 1, wherein the communication processor,
When an uplink signal and a downlink signal operate in a time division multiplexing scheme, the electronic device is configured to receive a signal through the second antenna at the first time point.
According to claim 1, wherein the communication processor,
When an uplink signal and a downlink signal operate in a time division multiplexing scheme, the electronic device receives, from the base station, information configured to receive a signal through the second antenna at the first time point.
In an electronic device,
communication processor;
at least one radio frequency integrated circuit (RFIC) coupled to the communication processor;
a first radio frequency front-end (RFFE) circuit coupled to the at least one RFIC and configured to process a transmission signal;
a second RFFE circuit coupled to the at least one RFIC and configured to process a transmission signal;
a first antenna group each including a plurality of antennas connected through the first RFFE circuit to transmit a signal corresponding to at least one communication network; and
A second antenna group including a plurality of antennas each connected through the second RFFE circuit to transmit a signal corresponding to at least one communication network;
The communication processor,
At a first time point when a reference signal is transmitted through the plurality of antennas, the second power is adjusted upward from the first power set for transmission of the reference signal through a first antenna of the first antenna group. 1 control to transmit a reference signal to the base station,
and controlling to transmit a second reference signal to the base station through a second antenna of the second antenna group with a third power lower than the second power at the first time point.
The method of claim 9, wherein the reference signal,
An electronic device comprising a sounding reference signal (SRS) used for multi-antenna signal processing through uplink channel state measurement.
The electronic device of claim 9, wherein a transmission path of a signal transmitted through the second antenna has a greater path loss than a transmission path of a signal transmitted through the first antenna.
10. The method of claim 9, wherein the communication processor,
At a second time point at which the reference signal is transmitted among the plurality of antennas, a third reference signal is transmitted through a third antenna of the second antenna group with a fourth power adjusted upward from the first power set for transmission of the reference signal. control to transmit to the base station,
and controlling to transmit a second reference signal to the base station through a fourth antenna of the first antenna group with a fifth power lower than the fourth power at the second time point.
The electronic device of claim 12 , wherein a transmission path of a signal transmitted through the fourth antenna has a greater path loss than a transmission path of a signal transmitted through the third antenna.
The method of claim 12, wherein the communication processor,
and controlling to change an impedance tuner setting value for the third antenna at the second time point.
10. The method of claim 9, wherein the communication processor,
Check the average of the MCS (modulation and coding scheme) for a certain time before the first time point,
When the average of the identified MCS falls within a set range, controlling to transmit the first reference signal with the first power.
a communication processor, at least one radio frequency integrated circuit (RFIC) coupled to the communication processor, at least one radio frequency front-end (RFFE) circuit coupled to the at least one RFIC and configured to process a transmission signal; A method for transmitting a reference signal in an electronic device including a plurality of antennas connected through the at least one RFFE circuit, the method comprising:
checking whether data is transmitted through a second antenna among the plurality of antennas at a first time point when a reference signal is transmitted through a first antenna among the plurality of antennas; and
As a result of the check, when data is not transmitted through the second antenna, controlling to transmit the reference signal to the base station with the second power adjusted upward from the first power set for transmission of the reference signal; includes; A method of transmitting a reference signal in an electronic device.
The method of claim 16, wherein the reference signal,
A method of transmitting a reference signal in an electronic device, including a sounding reference signal (SRS) used for multi-antenna signal processing through uplink channel state measurement.
The method of claim 16, wherein the second power is
A method of transmitting a reference signal from an electronic device, which is set based on a maximum transmittable power set for the electronic device.
17. The method of claim 16, wherein the method comprises:
In a carrier aggregation operation, the reference signal is transmitted through the first antenna through which a primary component carrier (PCC) signal is transmitted, and through the second antenna through which a secondary component carrier (SCC) signal is transmitted. A method of transmitting a reference signal in an electronic device that does not transmit a signal.
17. The method of claim 16, wherein the method comprises:
When an uplink signal and a downlink signal operate in a time division multiplexing scheme, the method of controlling so as not to transmit and receive signals through the second antenna at the first time point, an electronic device transmitting a reference signal.

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