TW202123623A - Electronic device, operating method thereof and wireless communication system - Google Patents

Abstract

An operating method of an electronic device including a plurality of panel antennas and storing information about a plurality of codebooks includes： determining at least one panel antenna among the plurality of panel antennas based on environmental information; receiving control information from a base station; and selecting an optimal codebook among the plurality of codebooks based on the determined at least one panel antenna and the received control information.

Description

Electronic device, its operation method and wireless communication system

The present disclosure relates to a wireless communication system, and more specifically, to beamforming based on an optimal codebook of an electronic device including a plurality of planar antennas in the wireless communication system. [Cross reference of related applications]

This application is based on and asserts the Korean Patent Application No. 10-2019-0043303 filed at the Korean Intellectual Property Office on April 12, 2019, and the Korean Patent Application No. 10-2019-0043303 filed at the Korean Intellectual Property Office on August 5, 2019. Priority of No. 10-2019-0095171, the disclosed content of the application is incorporated herein by reference in its entirety.

In recent years, there have been efforts to develop and enhance 5G communication systems or pre-5G (pre-5G) communication systems to meet the increased demand for wireless data communications due to the commercialization of fourth generation (4G) communication systems. Therefore, a 5G communication system or a pre-5G communication system is called a beyond 4G (beyond 4G) network communication system or a long term evolution (LTE) system.

To achieve high data transmission rates, 5G communication systems are implemented in ultra-high frequency (millimeter wave) bands (for example, 60 GHz band). In addition, in order to reduce the path loss of the electronic wave and increase the transmission distance of the electronic wave in the ultra-high frequency band of the 5G communication system, beamforming, massive multiple-input multiple-output (MIMO), and multiple-input multiple-output (MIMO) have been discussed. Dimensional MIMO (full dimensional MIMO; FD-MIMO), array antenna, analog beamforming, digital beamforming, hybrid beamforming, and large antenna technology.

The present disclosure provides an electronic device with multiple flat antennas for selecting the best codebook based on environmental information.

According to an aspect of the present disclosure, there is provided an operating method of an electronic device having multiple flat antennas and storing information about multiple codebooks. The operating method includes: based on a method corresponding to one of the multiple flat antennas. Determine at least one panel antenna among the plurality of panel antennas based on or more environmental information; receive control information from the base station; and select the plurality of codebooks based on the determined at least one panel antenna and the received control information The best codebook among them.

According to another aspect of the present disclosure, there is provided an electronic device, including: a communication interface including a plurality of panel antennas; a memory for storing information about a plurality of codebooks; and a controller configured to correspond to all Determine at least one of the plurality of panel antennas based on environmental information of one or more of the plurality of panel antennas, receive control information from the base station by using the communication interface, and based on the determined at least one panel The antenna and the received control information are used to select the best codebook among the multiple codebooks.

According to one aspect of the present disclosure, there is provided a wireless communication system, including: a base station configured to transmit control information to an electronic device; and the electronic device configured to correspond to a plurality of flat antennas Determine at least one panel antenna among the plurality of panel antennas based on the environmental information of one or more of the panel antennas, select the best codebook among the plurality of codebooks based on the determined at least one panel antenna and the control information, and Beamforming is performed based on the selected optimal codebook, wherein the environmental information includes at least one of temperature information, power consumption information, and channel state information of each of the plurality of panel antennas, and wherein The control information includes timing information about the time interval for transmitting the reference signal for beam scanning and beam-related configuration information.

According to one aspect of the present disclosure, there is provided an electronic device, including: a memory, storing one or more instructions; and a processor, configured to execute the one or more instructions to: based on corresponding to a plurality of tablets Determine at least one of the plurality of panel antennas based on information of one or more of the antennas; receive control information from the base station; and select a plurality of codes based on the determined at least one panel antenna and the received control information The best codebook among the books.

Fig. 1 shows a wireless communication system according to an example embodiment of the present disclosure.

Referring to FIG. 1, according to an example embodiment, a base station 110 and an electronic device 120 are provided in a wireless communication system 1. The base station 110 and the electronic device 120 can be shown as nodes that use the radio frequency channel in the wireless communication system 1.

The base station 110 is a network infrastructure that provides wireless connection to the electronic device 120. The base station 110 may have a coverage area defined as a certain geographic area based on the transmittable distance of the signal. The base station 110 can be an "access point (AP)", an "eNodeB (eNodeB; eNB)", a "5th generation (5G) node", a "wireless point" or a base station equivalent Replacement of other terms in technical meaning.

According to various example embodiments of the present disclosure, the base station 110 may be connected to one or more "transmission/reception points (TRP)". The base station 110 may transmit downlink signals to the electronic device 120 via one or more TRPs, or receive uplink signals from the electronic device 120 via one or more TRPs.

The electronic device 120 is a device used by a user and can communicate with the base station 110 via a radio frequency channel. The electronic device 120 can be configured from "terminal", "user equipment (UE)", "mobile station", "user station", "customer premises equipment (CPE)", "remote terminal", "wireless Replacement of "terminal", "user device" or other terms with technical meaning equivalent to electronic device.

The base station 110 and the electronic device 120 can transmit and receive radio frequency signals in a millimeter wave frequency band (for example, 28 GHz, 30 GHz, 38 GHz, or 60 GHz). In order to overcome the high attenuation characteristics of millimeter waves, the base station 110 and the electronic device 120 may perform beamforming. Herein, beamforming may include transmission beamforming and receive beamforming. That is, the base station 110 and the electronic device 120 can grant directivity for the transmission signal or the reception signal. For this purpose, the base station 110 and the electronic device 120 can select the best beam for wireless communication through beam searching, beam training, or beam management procedures.

Figure 2 is a block diagram of a base station according to an example embodiment of the present disclosure.

Referring to FIG. 2, the base station 110 may include a wireless communication interface 210, a backhaul communication interface 220, a storage 230 and a controller 240.

The wireless communication interface 210 can perform the functions of transmitting and receiving signals via a radio frequency channel. According to example embodiments of the present disclosure, the wireless communication interface 210 can perform a conversion function between the baseband signal and the bit stream according to the physical layer standard of the system. For example, the wireless communication interface 210 can generate complex symbols by encoding and modulating the transmission bit stream during data transmission, and recover the received bit stream by demodulating and decoding the baseband signal during data reception. In addition, the wireless communication interface 210 can up-convert the base frequency signal into a radio frequency (RF) frequency band signal and then transmit the RF frequency band signal via the antenna, or down-convert the RF frequency band signal received via the antenna into a base frequency signal. For this purpose, the wireless communication interface 210 may include a transmission filter, a reception filter, an amplifier, a mixer, an oscillator, a digital to analog converter (DAC), and an analog to digital converter (analog to digital converter). converter; ADC) and the like.

In addition, the wireless communication interface 210 can transmit and receive signals. For example, the wireless communication interface 210 can transmit synchronization signals, reference signals, system information, messages, control information, data, or the like. In addition, the wireless communication interface 210 can perform beamforming. The wireless communication interface 210 can apply beamforming weights to the signal to be transmitted or received in order to grant directivity to the signal. The wireless communication interface 210 can repeatedly transmit signals by changing the beam to be formed.

According to example embodiments, the backhaul communication interface 220 may provide an interface for communicating with other nodes in the network. That is, the backhaul communication interface 220 can convert the bit stream to be transmitted from the base station 110 to another node (for example, another access node, another base station, the previous generation node, the core network, or the like) into a physical signal. And convert the physical signal received from another node into a bit stream.

According to example embodiments, the storage 230 may store basic programs, application programs, and data such as configuration information used for the operation of the base station 110. The storage 230 may include volatile memory, non-volatile memory, or a combination of volatile memory and non-volatile memory.

According to example embodiments, the controller 240 may control the operation of the base station 110. For example, the controller 240 transmits and receives signals through the wireless communication interface 210 or the backhaul communication interface 220. In addition, the controller 240 writes data in the storage 230 and reads data from the storage 230. For this purpose, the controller 240 may include at least one processor.

FIG. 3A is a block diagram of an electronic device according to an example embodiment of the present disclosure.

3A, the electronic device 120 may include a communication interface 310, a storage 320, and a controller 330.

The communication interface 310 performs the functions of transmitting and receiving signals via the radio frequency channel. For example, the communication interface 310 performs a conversion function between the baseband signal and the bit stream according to the physical layer standard of the system. For example, the communication interface 310 can generate complex symbols by encoding and modulating the transmission bit stream during data transmission, and recover the received bit stream by demodulating and decoding the baseband signal during data reception. In addition, the communication interface 310 can up-convert the base frequency signal into an RF frequency band signal and then transmit the RF frequency band signal via the antenna, or down-convert the RF frequency band signal received via the antenna into a base frequency signal. For example, the communication interface 310 may include transmission filters, reception filters, amplifiers, mixers, oscillators, DACs, ADCs, and the like. The communication interface 310 can perform beamforming. The communication interface 310 can apply beamforming weights to the signal to be transmitted or received in order to grant directivity to the signal. According to various example embodiments of the present disclosure, the communication interface 310 may include a plurality of flat antennas, for example, the first flat antenna 310-1 to the Nth flat antenna 310-N. According to an exemplary embodiment, each of the plurality of panel antennas 310-1 to 310 -N may include an array antenna and may be configured at any position of the electronic device 120.

The communication interface 310 can transmit and receive signals. The communication interface 310 can receive downlink signals. The downlink signal may include a synchronization signal (SS), a reference signal (RS), system information, configuration information, control information, downlink data, or the like. In addition, the communication interface 310 can transmit uplink signals. The uplink signal may include random access related signals or reference signals (for example, sounding reference signal (SRS) or demodulation reference signal (DM-RS)), uplink data, or the like .

The storage 320 can store basic programs, application programs, and data such as configuration information used for the operation of the electronic device 120. The storage 320 may include volatile memory, non-volatile memory, or a combination of volatile memory and non-volatile memory. In addition, the storage 320 can provide stored data in response to a request from the controller 330. According to various embodiments of the present disclosure, the storage 320 may include a codebook storage 325 that stores information about multiple codebooks. The codebook storage 325 may pre-store information such as beamforming weights for optimal beaming by using at least one panel antenna selected for wireless communication among the plurality of panel antennas 310-1 to 310-N. Shaped.

The controller 330 controls the general operation of the electronic device 120. For example, the controller 330 can transmit and receive signals through the communication interface 310. In addition, the controller 330 can write data in the storage 320 and read data from the storage 320. For this purpose, the controller 330 may include at least one processor or microprocessor, or may be a part of the processor. When the controller 330 is a part of the processor, a part of the communication interface 310 and the controller 330 may be referred to as a communication processor (communication processor; CP).

The controller 330 may include a codebook determination circuit 331, a channel state monitoring circuit 332, and a power monitoring circuit 333. The channel state monitoring circuit 332 can monitor the channel states of the plurality of panel antennas 310-1 to 310-N, and the power monitoring circuit 333 can monitor the power consumption values of the plurality of panel antennas 310-1 to 310-N. For example, the channel state monitoring circuit 332 and the power monitoring circuit 333 can determine the reference signal received power (RSRP) value and power of each of the multiple panel antennas 310-1 to 310-N. The consumption value is periodically transmitted to the codebook determination circuit 331.

The codebook determination circuit 331 can determine at least one panel antenna among the plurality of panel antennas 310-1 to 310 -N according to the environmental information, and select the best codebook according to the situation of the electronic device 120. For example, the panel antenna used for wireless communication can be determined by considering the temperature and power consumption of each panel antenna, and among multiple codebooks corresponding to the determined panel antenna, it can be determined for the beam coverage or Codebook optimized for beamwidth usage.

According to example embodiments, the controller may communicate with one or more sensors such as a temperature sensor 341 and a proximity sensor 342. The temperature sensor 341 and the proximity sensor 342 are provided as examples, but the content of the disclosure is not limited thereto. Therefore, other types of sensors may be provided according to another example embodiment.

FIG. 3B is a configuration diagram of multiple panel antennas according to an example embodiment of the present disclosure.

Referring to FIG. 3B, the electronic device 120 may include multiple flat antennas. For example, the electronic device 120 may include a first flat antenna 310-1 to a fourth flat antenna 310-4 arranged at the corners of the electronic device 120.

Each of the plurality of panel antennas 310-1 to 310-N may include a plurality of array antennas. For example, the first panel antenna 310-1 may include a first array antenna 311, a second array antenna 312, and a third array antenna 313. The array antennas included in the same panel antenna can be different types of array antennas. The first array antenna 311 may correspond to a patch array, and the second array antenna 312 and the third array antenna 313 may correspond to a dipole array. The second array antenna 312 and the third array antenna 313 may respectively form beams in a lateral direction, and the first array antenna 311 may form a beam in a vertical direction relative to the plane of the electronic device 120.

Each of the array antennas can include multiple antenna elements. Each of the plurality of antenna elements included in the second array antenna 312 and the third array antenna 313 may correspond to a dipole antenna element, and each of the plurality of antenna elements included in the first array antenna 311 Those can correspond to patch antenna elements.

Although the array antenna and the antenna element have been described in the embodiments described above with reference to the dipole antenna and the patch antenna, the embodiment is not limited thereto. In addition, although it has been described in the embodiment described above with reference to the four panel antennas arranged in the corners of the electronic device 120, a plurality of panel antennas (for example, the Kth panel antenna to the Nth panel antenna , Including the P-th panel antenna and the M-th panel antenna).

FIG. 4 is a block diagram of a communication interface according to an example embodiment of the disclosure.

According to various embodiments of the present disclosure, FIG. 4 shows an example of a detailed configuration of the communication interface 310 of FIG. 3A. 4, the communication interface 310 may be a circuit including an encoder and modulator 410, a digital beamformer 420, a first transmission path 430-1 to an Nth transmission path 430-N, and an analog beamformer 440.

The encoder and modulator 410 performs channel encoding. To perform channel coding, at least one of a low density parity check (LDPC) code, a convolutional code, and a polar code may be used. The encoder and modulator 410 generates modulation symbols by performing cluster mapping.

The digital beamformer 420 beamforms a digital signal (for example, a modulation symbol). To this end, the digital beamformer 420 multiplies the modulation symbol by the beamforming weight. Herein, the beamforming weight is used to change the amplitude and phase of the signal, and can be referred to as a "prewritten code matrix", "prewritten coder" or the like. The digital beamformer 420 outputs the digital beamforming modulation symbols to the first transmission path 430-1 to the Nth transmission path 430-N. In this case, according to the MIMO transmission scheme, the modulation symbols may be multiplexed, or the same modulation symbols may be provided to the first transmission path 430-1 to the Nth transmission path 430-N.

The first transmission path 430-1 to the Nth transmission path 430-N convert the digital beamforming digital signal into an analog signal. For this purpose, each of the first transmission path 430-1 to the Nth transmission path 430-N may include an inverse fast Fourier transform (IFFT) arithmetic operator, a cyclic prefix (CP) Interposer, DAC and upconverter. The CP inserter is used in orthogonal frequency division multiplexing (OFDM) schemes, and when applying another physical layer scheme (for example, filter bank multi-carrier (FBMC)), it may not include all The CP inserter. That is, the first transmission path 430-1 to the Nth transmission path 430-N provide independent signal processing procedures for multiple streams generated through digital beamforming. However, according to the embodiment, some components of the first transmission path 430-1 to the Nth transmission path 430-N may be generally used. The analog beamformer 440 beamforms the analog signal. To this end, the analog beamformer 440 multiplies the analog signal by the beamforming weight. In this article, beamforming weights are used to change the amplitude and phase of the signal.

Although FIG. 4 illustrates an example based on a situation in which a signal is transmitted to another electronic device (for example, the base station 110), the example embodiments of the present disclosure are not limited thereto. When receiving a radio frequency signal from another electronic device, the communication interface 310 may include a decoder and a demodulator and multiple receiving paths. For example, the communication interface 310 can receive radio frequency signals, convert the radio frequency signals into digital signals, and decode and demodulate the digital signals.

FIG. 5 is a flowchart of beamforming performed by an electronic device according to an example embodiment of the present disclosure.

Referring to FIG. 5, in operation 510, the electronic device 120 may determine at least one panel antenna based on environmental information.

The environmental information may indicate information to be used by the electronic device 120 to determine which of the plurality of panel antennas 310-1 to 310-N to select when transmitting radio frequency signals. Environmental information can be called various terms such as peripheral information or management information. The environmental information may include various pieces of information, including information about the temperature of each of the plurality of panel antennas 310-1 to 310-N, information indicating channel status, information about power consumption, electronic The remaining battery capacity of the device 120 and information about the shape of the electronic device 120 held by the user.

According to various example embodiments of the present disclosure, the electronic device 120 may determine at least one panel antenna based on one or more pieces of environmental information. For example, the electronic device 120 may only use temperature information in the environmental information. The electronic device 120 may select at least one of the remaining flat antennas from the plurality of flat antennas 310-1 to 310-N to be used for transmitting and receiving radio frequency signals by excluding flat antennas that exceed the threshold temperature. . As another example, the electronic device 120 may determine at least one panel antenna based on temperature information and power information in the environmental information. The electronic device 120 can select any number of panel antennas according to the order of lower power consumption among the panel antennas remaining by excluding the panel antennas that exceed the threshold temperature. A specific example embodiment of determining at least one panel antenna based on environmental information will be described below with reference to FIGS. 6A to 6D.

In operation 520, the electronic device 120 may receive control information from the base station 110. The control information may include information for searching for the best beam between the base station 110 and the electronic device 120. For example, the control information may include information about the time point of transmitting the reference signal for beam scanning (for example, which symbol timing number is in which sub-frame number) and information about the length of the interval for transmitting the reference signal . In addition, the control information may include beam-related configuration information requested by the base station 110 from the electronic device 120. For example, the control information may include information related to the required characteristics of the main lobe and side lobes of the self-beam.

In operation 530, the electronic device 120 may select the best codebook based on the determined panel antenna and the control information received from the base station 110.

According to various embodiments of the present disclosure, the electronic device 120 can store information about multiple codebooks in advance. The multiple codebooks may respectively correspond to all the subsets available for the multiple panel antennas 310-1 to 310-N. For example, assuming that the number of panel antennas 310-1 to 310-N is 4, the multiple codebooks may include four subsets including only one activated panel antenna, and six panels including two activated panel antennas. Codebook information for a subset, four subsets containing three activated panel antennas, and a subset of all activated panel antennas. The electronic device 120 may include codebook information corresponding to a preset situation for each subset. This will be organized as follows.

[Table 1] Activated tablet combination Situation #1 Situation #2 … Situation#K #1 Code Book #1-1 Code Book #1-2 … Codebook#1-K #2 Code Book #2-1 Code Book#2-2 … Code Book#2-K #3 Code Book #3-1 Code Book#3-2 … Code Book#3-K #4 Code Book#4-1 Code Book#4-2 … Code Book#4-K #1, #2 Code Book#12-1 Code Book#12-2 … Code Book#12-K #1, #3 Code Book#13-1 Code Book#13-2 … Code Book#13-K #1, #4 Code Book #14-1 Code Book#14-2 … Code Book#14-K #2, #3 Code Book #23-1 Code Book#23-2 … Code Book#23-K #2, #4 Code Book#24-1 Code Book#24-2 … Code Book#24-K #3, #4 Code Book#34-1 Code Book#34-2 … Code Book#34-K #1, #2, #3 Code Book#123-1 Code Book#123-2 … Code Book#123-K #1, #2, #4 Codebook #124-1 Code Book #124-2 … Code Book#124-K #1, #3, #4 Code Book #134-1 Code Book#134-2 … Code Book#134-K #2, #3, #4 Codebook #234-1 Code Book #234-2 … Code Book#234-K #1, #2, #3, #4 Codebook #1234-1 Code Book#1234-2 … Code Book#1234-K

Referring to Table 1, there are combinable number subsets corresponding to the plurality of panel antennas 310-1 to 310-N included in the electronic device 120, and the subsets can be defined in advance to use activated panel antennas corresponding to Codebook for multiple situations. Although Table 1 shows a case where the electronic device 120 includes four flat antennas, the present embodiment is not limited to this, and various numbers of cases and various numbers of flat antennas can be used.

Each of the multiple scenarios (the first scenario to the Kth scenario) shown in Table 1 can be determined based on at least the beamforming area of the electronic device 120 and the beam-related configuration information between the base station 110 and the electronic device 120 By. For example, the beamforming area may be determined based on the information about the beam coverage, the beam width, and the mobility of the electronic device 120, and the beam-related configuration information may include the characteristics of the main lobe of the beam and the side lobes of the beam Information about the characteristics.

According to various embodiments of the present disclosure, the electronic device 120 can select a flat antenna for transmitting and receiving radio frequency signals based on environmental information, and determine the best codebook for the selected flat antenna. For example, the electronic device 120 may consider the reception timing of the beam management channel state information-reference signal (BM CSI-RS) (obtainable from the control information), and the main lobe of the beam. The characteristics of side lobes, beam coverage, beam width, mobility of the electronic device 120, and the like select a codebook according to one of the subsets corresponding to the activated panel antennas.

In operation 540, the electronic device 120 may perform beamforming according to the selected codebook. The electronic device 120 can control the analog beamformer 440 and/or the digital beamformer 420 according to the analog beamforming parameters and the digital beamforming parameters stored in the selected codebook.

In operation 550, the electronic device 120 may transmit information indicating the determined panel antenna to the base station 110. The information indicating the determined panel antenna can be transmitted through the transmission for the original attachment between the electronic device 120 and the base station 110, or can be transmitted by periodic measurement report information or user equipment capabilities included in the electronic device 120 Information to be transmitted.

According to the present disclosure, the sequence of operation 510 to operation 550 is not limited to the illustrative illustration in FIG. 5. According to other example embodiments of the present disclosure, the order of operations may be different, one or more other operations may be added, and one or more operations may be omitted.

FIG. 6A is a flowchart of selecting a panel antenna based on temperature information performed by an electronic device according to an example embodiment of the present disclosure.

6A, in operation 511-1, the electronic device 120 may obtain the temperature information of each of the plurality of panel antennas 310-1 to 310-N from the temperature sensor 341. The temperature sensor 341 can repeatedly transmit the temperature information to the controller 330 in each previously determined period. The number of temperature sensors 341 may correspond to the number of panel antennas 310-1 to 310-N. That is, each of the multiple flat antennas 310-1 to 310 -N can be connected to a single temperature sensor 341.

The electronic device 120 can obtain the temperature information of each of the plurality of panel antennas 310-1 to 310-N, and compare the temperature information with a threshold temperature value. The threshold temperature value may correspond to a value preset at the time of manufacturing. The threshold temperature value can indicate a temperature value that is too high to cause component failure. For example, the threshold temperature value can be 90.

In operation 511-2, the electronic device 120 may select the panel antennas remaining after excluding the panel antennas whose temperature exceeds the threshold temperature value from the plurality of panel antennas 310-1 to 310-N. The electronic device 120 can compare the temperature information and the threshold temperature value of each of the plurality of panel antennas 310-1 to 310-N, and perform beamforming by eliminating the panel antennas that may cause failures. For example, assume that the plurality of panel antennas 310-1 to 310-N include the first panel antenna 310-1 to the fourth panel antenna 310-4, and the first panel antenna 310-1 to the fourth panel antenna 310- The temperature values of 4 are 100, 70, 85, and 91 respectively. The electronic device 120 may exclude the first panel antenna 310-1 to the fourth panel antenna 310-4 whose temperature exceeds 90 (which is the threshold temperature value). The electronic device 120 may determine the beamforming to be performed based on the second flat antenna 310-2, the third flat antenna 310-3, and a combination thereof. Therefore, the electronic device 120 can prevent failures caused by the high temperature of the flat antenna in advance and obtain an overall cooling effect.

FIG. 6B is a flowchart of selecting a flat antenna according to the position information of the hand held by the electronic device according to an example embodiment of the present disclosure.

Referring to FIG. 6B, in operation 512-1, the electronic device 120 may obtain position information of the hand holding the electronic device 120 from the proximity sensor 342. The location information may include information about which part of the electronic device 120 the user has held. The number of proximity sensors 342 may correspond to the number of panel antennas 310-1 to 310-N. That is, each of the multiple flat antennas 310-1 to 310 -N can be connected to a single proximity sensor 342.

According to another example embodiment, the electronic device 120 can obtain the position information of the object covering (or blocking) the panel antenna from the proximity sensor 342. That is, the location information can correspond to an object different from the hand holding the electronic device. For example, the object may be a housing or a holder such as a holder for attaching the electronic device 120 to the vehicle.

The electronic device 120 can obtain position information from the proximity sensor 342 connected to the plurality of panel antennas 310-1 to 310-N, and identify the panel antennas blocked by the user's hand. For example, when the proximity sensor 342 corresponding to the first panel antenna 310-1 receives location information with a logic high or "1" value, it can be recognized that the user is currently holding the electronic device 120 Make contact with the first flat antenna 310-1. As another example, when the position information received from the proximity sensor 342 corresponding to the second panel antenna 310-2 has a logic low or "0" value, it can be recognized that the user is holding the electronic device 120 but not Make contact with the second flat antenna 310-2.

In operation 512-2, the electronic device 120 may select, based on the location information, the remaining flat antennas by excluding the flat antennas from the plurality of flat antennas 310-1 to 310-N that are in contact with the hand holding the electronic device 120 At least one of the flat panel antennas. The electronic device 120 can receive the position information of the hand holding the electronic device 120 from the proximity sensor 342 respectively connected to the plurality of panel antennas 310-1 to 310-N, and select the hand that is not identified with the user. At least one of the planar antennas that make contact. For example, when the value of the position information received from the proximity sensor 342 connected to the first panel antenna 310-1 is "1" or a logic high, if beamforming is performed through the first panel antenna 310-1, It is possible that the formed beam is blocked by the user's hand and normal communication is not performed. Therefore, the electronic device 120 can perform beamforming by using the remaining flat antennas by excluding the flat antennas that make contact with the user's hand. Therefore, even if the receiving sensitivity of each of the plurality of panel antennas 310-1 to 310-N is not measured, the electronic device 120 can use the proximity sensor data to preclude the failure to form Panel antennas with beams to perform efficient beamforming.

FIG. 6C is a flowchart of selecting a panel antenna based on power information performed by an electronic device according to an example embodiment of the present disclosure.

Referring to FIG. 6C, in operation 513-1, the electronic device 120 may obtain information about the power consumption of each of the plurality of panel antennas 310-1 to 310-N. The controller 330 of FIG. 3 may further include a power monitoring circuit 333, and the power monitoring circuit 333 may monitor the power value consumed by each of the plurality of panel antennas 310-1 to 310-N.

The electronic device 120 can obtain the power value consumed by each of the plurality of panel antennas 310-1 to 310 -N through the power monitoring circuit 333, and compare the acquired power value with the threshold power value. The threshold power value may be a preset value or may be changed according to the remaining battery capacity of the electronic device 120. For example, when the remaining battery capacity of the electronic device 120 is 30%, the electronic device 120 may change the threshold power value to improve battery utilization efficiency.

In operation 513-2, the electronic device 120 may select the remaining panel antennas by excluding the panel antennas whose power consumption value exceeds the threshold power value from the plurality of panel antennas 310-1 to 310-N. For example, when the plurality of panel antennas 310-1 to 310-N include the first panel antenna 310-1 to the fourth panel antenna 310-4, and the first panel antenna 310-1 and the second panel antenna 310- 2 When consuming power exceeding the threshold power value, the electronic device 120 can exclude the first panel antenna 310-1 to the second panel antenna 310-2 according to the third panel antenna 310-3, the fourth panel antenna 310-4, and the They are combined to perform beamforming. Therefore, the electronic device 120 can use a flat antenna with low power consumption to perform beamforming, and thus can improve battery utilization efficiency.

FIG. 6D is a flowchart of selecting a flat antenna based on channel status by an electronic device according to an example embodiment of the present disclosure.

Referring to FIG. 6D, in operation 514-1, the electronic device 120 may obtain the RSRP value of each of the plurality of panel antennas 310-1 to 310-N. The controller 330 of FIG. 3 may further include a channel state monitoring circuit 332, and the channel state monitoring circuit 332 may measure the RSRP value of each of the plurality of panel antennas 310-1 to 310-N. The RSRP value is only used as a representative value of the state of the receiving channel, but is not limited to this. For example, in addition to RSRP, the electronic device 120 can also obtain all types of information that can indicate channel status, such as received signal strength indicator (RSSI) and reference signal received quality (reference signal received quality; RSRQ), and measure the channel quality based on the acquired information.

The electronic device 120 may obtain the RSRP value of each of the plurality of panel antennas 310-1 to 310-N through the channel state monitoring circuit 332, and compare the acquired RSRP value with the threshold RSRP value. The threshold RSRP value can be a preset value or a variable value. For example, when the communication type of the electronic device 120 is instant communication (for example, ultra reliable low latency communication (URLLC)) or communication that requires high quality of service (QoS), the electronic device 120 120 can increase the threshold RSRP value, thereby preventing in advance communication using panel antennas with low receiving sensitivity or poor channel quality.

In operation 514-2, the electronic device 120 may select the remaining panel antennas by excluding panel antennas having RSRP values smaller than the threshold RSRP value from the plurality of panel antennas 310-1 to 310-N. For example, the plurality of panel antennas 310-1 to 310-N may include a first panel antenna 310-1 to a fourth panel antenna 310-4, and a second panel antenna 310-2 and a third panel antenna 310- The RSRP value of 3 can be less than the threshold RSRP value. The electronic device 120 can perform beamforming according to the first flat antenna 310-1, the fourth flat antenna 310-4 and the combination thereof by excluding the second flat antenna 310-2 and the third flat antenna 310-3. Therefore, the electronic device 120 can perform beamforming by using a planar antenna with good channel quality or high receiving sensitivity. According to the embodiments described above, although panel antennas having RSRP values smaller than the threshold RSRP value are excluded, the embodiments are not limited thereto. The electronic device 120 can set a threshold RSRP value and select a panel antenna with an RSRP value greater than the threshold RSRP value.

Referring to FIGS. 6A to 6D, although the electronic device 120 selects at least one panel antenna based on a piece of information in the environmental information, the embodiment with reference to FIGS. 6A to 6D is not limited thereto. According to various embodiments of the present disclosure, the electronic device 120 can select the panel antenna based on at least two pieces of information in the environmental information. For example, the electronic device 120 may select at least one panel antenna by considering both temperature information and power consumption value.

FIG. 7 is a flowchart of selecting the best codebook performed by the electronic device according to an example embodiment of the present disclosure.

Referring to FIG. 7, in operation 530-1, the electronic device 120 may generate a mutual coupling matrix between the antenna elements of the determined panel antenna. The mutual coupling matrix can be generated by actual measurement or determined by modeling as shown in FIG. 8. The mutual coupling matrix can correspond to the following. Referring to FIG. 8, a first array antenna 311, a second array antenna 312, and a third array antenna 313 are shown. The mutual coupling between antenna elements can occur not only between adjacent antenna elements in the same array antenna (for example, the second array antenna 312), but also between different array antennas (for example, the first array antenna 311 and the third array antenna 312). Array antenna 313) between the antenna elements.

[Equation 1]

可指代天線阻抗，

可指代負載阻抗，且

可指代互阻抗矩陣（

可指代N維單位矩陣）。In Equation 1,

Can refer to antenna impedance,

Can refer to load impedance, and

Can refer to the transimpedance matrix (

Can refer to the N-dimensional identity matrix).

限定每一天線元件，且電抗分量及電阻分量可表達如下。For dipole antenna arrays, you can use

Each antenna element is defined, and the reactance component and resistance component can be expressed as follows.

[Equation 2]

[Equation 3]

可指代磁性常數，

可指代電氣常數，

，

，

，且

可指代偶極天線長度，

。此外，在方程式2及方程式3中，餘弦積分函數及正弦積分函數分別如下，且

可指代歐拉馬斯克若尼（Euler-Mascheroni）常數。In Equation 2 and Equation 3,

Can refer to the magnetic constant,

Can refer to the electrical constant,

,

,

And

Can refer to the length of the dipole antenna,

. In addition, in Equation 2 and Equation 3, the cosine integral function and the sine integral function are as follows respectively, and

Can refer to Euler-Mascheroni constant.

[Equation 4]

[Equation 5]

中的方位角

及仰角

可表達如下。In operation 530-2, the electronic device 120 may generate an array response vector. The array response vector can be generated based on modeling. For example, assuming that the origin is the reference point of the phase response (that is, zero degrees), the phase response is in the polar coordinate system

Azimuth

And elevation

It can be expressed as follows.

[Equation 6]

，且其相位回應如下。In this article, assuming that the i-th antenna is located on the polar axis, the corresponding polar coordinates are

, And its phase response is as follows.

[Equation 7]

In addition, the phase response of the remaining antenna elements is as follows.

[Equation 8]

及仰角

的陣列回應向量的各別分量為相位回應與天線唯一圖案特性

的乘積，且可表達如下。Corresponds to the azimuth

And elevation

The individual components of the array response vector are the phase response and the unique pattern characteristics of the antenna

The product of and can be expressed as follows.

[Equation 9]

可表達如下。Therefore, the array response vector a

It can be expressed as follows.

[Equation 10]

In operation 530-3, the electronic device 120 may determine the best beam pattern based on the control information. According to various embodiments of the present disclosure, the optimal beam pattern can be set according to the purpose of use. For example, the optimal beam pattern can be determined based on the beam coverage, beam width, beam scanning timing, time interval length, the structure of the selected flat panel array, and the like. A specific embodiment for determining the best beam pattern will be described below with reference to FIG. 10.

In operation 530-4, the electronic device 120 may determine and optimize the analog/digital beam vector. For example, when the beam vector (or weight vector) of the antenna array is given, the beam shape in one direction (for example, ϕ in the horizontal direction and θ in the vertical direction) is as follows.

[Equation 11]

Here, in order to achieve the desired beam pattern, the beam vector of the antenna array can be optimized to minimize the distortion of the beam pattern. For example, the electronic device 120 may be optimized by weighting the distortion of the beam pattern.

[Equation 12]

可指代對應方向的重要性的權重。此外，為減小複雜度，可藉由僅在現有採樣方向上進行評估來推導波束圖案。In this article,

It can refer to the weight of the importance of the corresponding direction. In addition, in order to reduce the complexity, the beam pattern can be derived by evaluating only in the existing sampling direction.

[Equation 13]

時，電子裝置120可識別類比端及數位端的操作。可根據類比端與數位端的連接關係來判定類比端及數位端的識別。一旦根據波束成形結構來判定了

及

的形式，則可經由方程式14推導類比端與數位端的連接關係。最佳化用以使波束圖案的失真最小化。可將權重授予波束圖案的失真。According to the various embodiments of the present disclosure, when determining the beam vector

At this time, the electronic device 120 can recognize the operations of the analog terminal and the digital terminal. The recognition of the analog terminal and the digital terminal can be determined according to the connection relationship between the analog terminal and the digital terminal. Once determined based on the beamforming structure

and

The connection relationship between the analog end and the digital end can be derived through Equation 14. Optimization is used to minimize the distortion of the beam pattern. A weight can be given to the distortion of the beam pattern.

[Equation 14]

及

為滿足硬體的約束條件的可實施的波束成形集合，且

可指代對應方向的重要性的權重。In this article,

and

A set of beamforming that can be implemented to meet the constraints of the hardware, and

It can refer to the weight of the importance of the corresponding direction.

[Equation 15]

[Equation 16]

According to various example embodiments of the present disclosure, the electronic device 120 can reduce the complexity by applying the above equations.

9A and 9B show examples of analog/digital beamforming according to example embodiments of the present disclosure.

Referring to FIG. 9A, a panel antenna and an array antenna included therein are shown. The first array antenna 311, the second array antenna 312, and the third array antenna 313 can independently perform beamforming. For example, each of the signal from the first array antenna 311, the signal from the second array antenna 312, and the signal from the third array antenna 313 can be processed by a digital signal processor. Therefore, beamforming can be performed by weighting each array antenna in different ways.

Referring to FIG. 9B, the first array antenna 311 to the third array antenna 313 may perform beamforming in dependence on each other. For example, the signals from the first array antenna 311, the second array antenna 312, and the third array antenna 313 are added as a single signal before being processed by the digital signal processor, and therefore, different weights cannot be applied to each array Antennas, and beams can be formed based on shared beamforming weights.

FIG. 10 is a flowchart of selecting an optimal beam pattern performed by an electronic device according to an example embodiment of the present disclosure.

Referring to FIG. 10, in operation 530-3-1, the electronic device 120 may determine the beam coverage. The beam coverage may indicate a direction having a certain range in which the beam is to be formed by the electronic device 120 by reflecting the position related to the base station 110.

In operation 530-3-2, the electronic device 120 may determine the beam width. The electronic device 120 can determine the beam width by considering the mobility (that is, the moving speed) of the electronic device 120. For example, when the electronic device 120 is moving fast, if a beam with a narrow beam width is used for communication, the beam scanning should be performed frequently. Therefore, when the electronic device 120 moves quickly, it can be determined to generate a beam with a wide beam width.

In operation 530-3-3, the electronic device 120 may determine beam distribution and overlap/non-overlap based on the control information.

The control information is information received from the base station, and may include information indicating the beam scanning timing and interval length. Therefore, the electronic device 120 can receive the control information and determine the overlap for stably performing beam scanning with the determined beam coverage and beam width. For example, when the beam coverage area is wide and the beam width is wide, beamforming can be performed to overlap between adjacent beams, thereby directly or indirectly measuring the channel quality in all directions of the wider coverage area . The electronic device 120 may determine the beam distribution based on the connection relationship of the selected panel antenna. For example, as shown in FIG. 9A, when the first array antenna 311 to the third array antenna 313 can be independently controlled, the beams can be arranged non-uniformly in the beam coverage. As another example, as shown in FIG. 9B, when the first array antenna 311 to the third array antenna 313 are controlled dependently, the beams can be uniformly arranged in the beam coverage.

According to the embodiment described above, it has been described that the electronic device 120 selects at least one panel antenna based on environmental information and transmits information indicating the selected at least one panel antenna to the base station 110, but the embodiment is not limited thereto. According to various embodiments of the present disclosure, the base station 110 may indicate at least one panel antenna for uplink transmission. For example, the base station 110 may transmit transmission configuration indicator (TCI) information or information indicating the identification (ID) of the panel antenna of the electronic device 120 to the electronic device 120 during the downlink transmission process. , To determine at least one panel antenna of the electronic device 120.

According to an embodiment of the present disclosure, the base station 110 can transmit TCI information to the electronic device 120. The TCI information can be transmitted to the electronic device 120 via downlink control information (DCI). The TCI information may be information indicating the antenna port of the electronic device 120. The antenna port may not correspond to a physical panel antenna, but indicates a panel antenna with the same or similar communication environment. Panel antennas with the same or similar communication environment can be quasi-co-located (QCL) with each other. The QCL relationship may indicate a relationship in which it can be assumed that the large-scale nature of the signal received from one antenna port of the electronic device 120 is at least partially the same as the large-scale nature of the signal received from another antenna port. For example, large-scale properties may include Doppler spread and Doppler frequency shift related to frequency offset, average delay and delay spread related to time offset, and the like. That is, the multiple panel antennas 310-1 to 310 -N of the electronic device 120 can be grouped into QCL panel antennas. For example, TCI0 may indicate a first antenna group including QCL panel antennas, and TCI1 may indicate a second antenna group including QCL panel antennas having different channel characteristics from the first antenna group. That is, the first antenna group and the second antenna group may be groups different in the properties of Doppler spread, Doppler frequency shift, average delay, delay spread, and the like.

The electronic device 120 can receive TCI information from the base station 110 and identify the panel antenna group indicated by the received TCI information. For example, when the base station 110 transmits TCI0, the electronic device 120 can identify the first antenna group. In this document, each antenna group indicated by the TCI information can be mapped and stored in advance. The electronic device 120 may select at least one panel antenna among the panel antennas included in the identified first antenna group based on the environmental information. The selection of at least one panel antenna based on the environmental information performed by the electronic device 120 is the same as that described above, and the detailed description thereof is omitted. That is, the base station 110 can transmit the TCI information to the electronic device 120 to receive the uplink signal via the panel antenna corresponding to the channel characteristics selected by the base station 110.

As another example, the base station 110 may transmit the panel antenna ID information to the electronic device 120 to determine the panel antenna (uplink signal is to be transmitted through the panel antenna). It can be assumed that the base station 110 has performed beam training or beam scanning by transmitting and receiving reference signals before transmitting the panel antenna ID information via the downlink. That is, the base station 110 can obtain the ID information of each panel antenna of the electronic device 120 in advance through the beam training of the electronic device 120. The base station 110 may determine the panel antenna to be used for the uplink, and transmit ID information indicating the determined panel antenna to the electronic device 120 via the DCI. The electronic device 120 can decode the received panel antenna ID information to identify the panel antenna that the base station 110 intends to use for the uplink, and transmit the uplink signal to the base station 110 via the identified panel antenna.

According to another example embodiment of the present disclosure, in addition to the TCI information or the panel antenna ID information, the electronic device 120 may further determine at least one panel antenna based on the environmental information. For example, when the electronic device 120 receives TCI information, the electronic device 120 can identify an antenna group by decoding the TCI information. The electronic device 120 can select at least one flat antenna among the plurality of flat antennas included in the identified antenna group by using the environment information. For example, the electronic device 120 may transmit and receive radio frequency signals by using the remaining flat antennas by excluding at least one of the following from the flat antennas included in the first antenna group: the temperature exceeds the immediate Panel antennas with limited temperature, panel antennas that make contact with the user's hand, panel antennas with power consumption values exceeding the threshold power value, and panel antennas with an RSRP value less than the threshold RSRP value. When all the panel antennas included in the first antenna group are not suitable for transmission and reception (for example, when all panel antennas included in the first antenna group have a temperature exceeding the threshold temperature), the electronic device 120 can transmit uplink signals by using a panel antenna whose temperature exceeds the threshold temperature, and also transmit a signal indicating that the panel antenna needs to be changed for reliable reception by the base station 110. Alternatively, to prevent the electronic device 120 from malfunctioning, the electronic device 120 may bypass the selection of the first antenna group indicated by the base station 110 and transmit uplink signals by using other flat antennas.

According to another example embodiment, when the electronic device 120 receives the panel antenna ID information, the electronic device 120 may further determine whether the panel antenna indicated by the panel antenna ID information has a temperature exceeding the threshold temperature, and whether it has an RSRP value less than the threshold The RSRP value, whether it consumes power exceeding the threshold power value, and whether it is in contact with the user’s hand. Even if the temperature of the panel antenna selected by the base station 110 exceeds the threshold temperature, the electronic device 120 can transmit an uplink signal via the panel antenna indicated by the panel antenna ID information, and also transmit a signal indicating that the panel antenna needs to be changed in the future. This is used for reliable reception by the base station 110. Alternatively, to prevent the electronic device 120 from malfunctioning, the electronic device 120 may transmit uplink information via another panel antenna selected based on the environmental information instead of the panel antenna indicated by the received panel antenna ID information.

Although the content of this disclosure has been specifically illustrated and described with reference to its embodiments, it should be understood that various changes in form and details can be made therein without departing from the spirit and scope of the scope of the following patent applications.

1: wireless communication system 110: base station 120: electronic device 210: wireless communication interface 220: Backhaul communication interface 230, 320: storage 240, 330: Controller 310: Communication interface 310-1: The first panel antenna 310-2: second panel antenna 310-3: Third panel antenna 310-4: Fourth panel antenna 310-N: Nth panel antenna 311: The first array antenna 312: second array antenna 313: third array antenna 325: Code Book Storage 331: Codebook Judgment Circuit 332: Channel status monitoring circuit 333: Power monitoring circuit 341: temperature sensor 342: Proximity Sensor 410: encoder and modulator 420: Digital beamformer 430-1: The first transmission path 430-N: Nth transmission path 440: analog beamformer 510, 511-1, 511-2, 512-1, 512-2, 513-1, 513-2, 514-1, 514-2, 520, 530, 530-1, 530-2, 530-3, 530-3-1, 530-3-2, 530-3-3, 530-4, 540, 550: Operation

The following detailed description, which will be carried out in conjunction with the accompanying drawings, will more clearly understand the embodiments of the present disclosure, in which: Fig. 1 shows a wireless communication system according to an example embodiment of the present disclosure. Figure 2 is a block diagram of a base station according to an example embodiment of the present disclosure. FIG. 3A is a block diagram of an electronic device according to an example embodiment of the present disclosure. FIG. 3B is a configuration diagram of multiple panel antennas according to an example embodiment of the present disclosure. FIG. 4 is a block diagram of a communication interface according to an example embodiment of the disclosure. FIG. 5 is a flowchart of beamforming performed by an electronic device according to an example embodiment of the present disclosure. FIG. 6A is a flowchart of selecting a panel antenna based on temperature information performed by an electronic device according to an example embodiment of the present disclosure. FIG. 6B is a flow chart of selecting a flat antenna based on holding information by an electronic device according to another example embodiment of the present disclosure. FIG. 6C is a flowchart of selecting a panel antenna based on power information performed by an electronic device according to another example embodiment of the present disclosure. FIG. 6D is a flowchart of selecting a flat antenna based on a channel state performed by an electronic device according to another example embodiment of the present disclosure. FIG. 7 is a flowchart of selecting the best codebook performed by the electronic device according to another example embodiment of the present disclosure. Figure 8 shows an example of mutual coupling between antenna elements according to an example embodiment of the present disclosure. Figure 9A shows an example of analog/digital beamforming according to an example embodiment of the present disclosure. FIG. 9B shows another example of analog/digital beamforming according to another example embodiment of the present disclosure. FIG. 10 is a flowchart of selecting an optimal beam pattern performed by an electronic device according to an example embodiment of the present disclosure.

510, 520, 530, 540, 550: operation

Claims (25)

An operating method of an electronic device having multiple panel antennas and storing information about multiple codebooks, the operating method includes: Determining at least one panel antenna among the plurality of panel antennas based on the environmental information; Receive control information from the base station; and The best codebook among the plurality of codebooks is selected based on the determined at least one panel antenna and the received control information. The operation method as described in claim 1, further including Perform beamforming based on the selected optimal codebook. The operation method as described in claim 1, further including The information indicating the determined at least one panel antenna is transmitted to the base station. The operation method as described in claim 1, wherein The environmental information includes at least one of the following: first information about the temperature of each of the plurality of panel antennas, and first information about the power consumption of each of the plurality of panel antennas Second information, third information indicating the channel status of each of the plurality of flat antennas, and fourth information indicating the flat antenna of the plurality of flat antennas adjacent to the user's hand. The operation method described in claim 4 further includes: Comparing the temperature with a threshold temperature of each of the plurality of panel antennas, and The panel antenna that is still among the panel antennas after excluding panel antennas with a temperature exceeding the threshold temperature from the plurality of panel antennas is selected as the determined at least one panel antenna. The operation method described in claim 4 further includes: Comparing the power value consumed by each of the plurality of panel antennas with a threshold power value, and The panel antenna that is still among the panel antennas after the panel antennas that consume power exceeding the threshold power value is excluded from the plurality of panel antennas is selected as the determined at least one panel antenna. The operation method described in claim 4 further includes: Comparing the channel quality value and the threshold quality value of each of the plurality of panel antennas, and The panel antenna having a channel quality value exceeding the threshold quality value among the plurality of panel antennas is selected as the determined at least one panel antenna. The operation method according to claim 7, wherein The third information indicating the channel status includes at least one of reference signal received power, received signal strength indicator, and reference signal received quality. The operation method described in claim 4 further includes: Identifying one or more panel antennas that are in physical contact with the hand of the user based on the fourth information, and The panel antennas among the plurality of panel antennas remaining after the identified one or more panel antennas that are in physical contact with the user's hands are excluded from the plurality of panel antennas as the The determined at least one panel antenna. The operation method according to claim 1, wherein the control information received from the base station includes: Timing information about the time interval for transmitting the reference signal for beam scanning; and Configuration information of the beam. The operation method according to claim 10, wherein selecting the best codebook includes: Generating a mutual coupling matrix between the antenna elements included in the determined at least one panel antenna; Determining the determined array response vector of the at least one panel antenna based on the mutual coupling matrix; Determining the best beam pattern based on the control information received from the base station; and Determine and optimize the analog/digital beam vector. The operation method according to claim 11, wherein determining the optimal beam pattern includes: Determine the beam coverage; Determine the beam width; and The beam distribution and overlap are determined based on the control information. An electronic device, including: Communication interface, including multiple flat antennas; Memory, which stores information about multiple codebooks; and A controller configured to determine at least one panel antenna among the plurality of panel antennas based on environmental information, Receiving control information from the base station by using the communication interface, and The best codebook among the plurality of codebooks is selected based on the determined at least one panel antenna and the received control information. The electronic device according to claim 13, wherein The controller is further configured to perform beamforming based on the selected best codebook. The electronic device according to claim 13, wherein The controller is further configured to transmit information indicating the determined at least one panel antenna to the base station by using the communication interface. The electronic device according to claim 13, wherein The environmental information includes at least one of the following: first information about the temperature of each of the plurality of panel antennas, and first information about the power consumption of each of the plurality of panel antennas Second information, third information indicating the channel status of each of the plurality of flat antennas, and fourth information indicating the flat antenna of the plurality of flat antennas adjacent to the user's hand. The electronic device according to claim 16, further comprising one or more sensors, Wherein the information about the temperature is measured by using a temperature sensor among the one or more sensors, and The controller is further configured to: Comparing the temperature and the threshold temperature of each of the plurality of panel antennas, and It is determined that the at least one panel antenna among the panel antennas remaining by excluding panel antennas having a temperature exceeding the threshold temperature from the plurality of panel antennas. The electronic device according to claim 16, wherein The controller further includes a power monitoring circuit configured to monitor the value of power consumed by each of the plurality of panel antennas, and The controller is further configured to: Based on the information about the power consumption of each of the plurality of panel antennas, the power value consumed by each of the plurality of panel antennas is compared with a threshold power value, and it is determined by The at least one flat panel antenna among the remaining flat panel antennas is excluded from the plurality of flat panel antennas that consume power exceeding the threshold power value. The electronic device according to claim 16, wherein The controller is further configured to: Comparing the channel quality value and the threshold quality value of each of the plurality of panel antennas based on the information indicating the channel status of each of the plurality of panel antennas, and The at least one panel antenna is determined from panel antennas having a channel quality value exceeding the threshold quality value among the plurality of panel antennas. The electronic device according to claim 19, wherein Measuring the third information indicating the channel state by a channel state monitoring circuit included in the controller and The third information includes at least one of reference signal received power, received signal strength indicator, and reference signal received quality. The electronic device according to claim 16, further comprising one or more sensors, The controller is further configured to: Identifying one or more panel antennas that make physical contact with the user's hand based on the fourth information received from the one or more sensors, and The at least one panel antenna among the panel antennas remaining after excluding the identified panel antenna from the plurality of panel antennas is selected. The electronic device according to claim 13, wherein the control information received from the base station includes: Information about the timing and the time interval for transmitting the reference signal for beam scanning; and Configuration information of the beam. The electronic device according to claim 22, wherein The optimal codebook is selected by the controller that performs the following operations: generating a mutual coupling matrix between the antenna elements included in the determined at least one panel antenna, and determining the optimal codebook based on the mutual coupling matrix. The determined array response vector of the at least one panel antenna is determined, the optimal beam pattern is determined based on the control information received from the base station, the analog/digital beam vector is determined, and the optimization is performed. The electronic device according to claim 23, wherein The optimal beam pattern is selected by the controller that performs the following operations: determining beam coverage, determining beam width, and determining beam distribution and overlap based on the control information. A wireless communication system includes: Base station, configured to transmit control information to electronic devices; and The electronic device is configured to: Determine at least one of the plurality of panel antennas based on the environmental information, Selecting the best codebook among a plurality of codebooks based on the determined at least one panel antenna and the control information, and Performing beamforming based on the selected optimal codebook, Wherein the environmental information includes at least one of temperature information, power consumption information, and channel status information of each of the plurality of panel antennas, and The control information includes timing information about the time interval for transmitting the reference signal for beam scanning and beam-related configuration information.

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