KR20210033266A - Method for transmitting wireless power and electronic device thereof - Google Patents

Abstract

According to various embodiments of the present invention, provided are a method for transmitting wireless power and an electronic device thereof. The electronic device comprises: a communication circuit; a sensor module; and a processor operatively coupled to the communication circuit and the sensor module, wherein the processor determines a transmission beam and a reception beam for an external electronic device through the communication circuit, detects a human body through the sensor module, determines transmission power to the external electronic device based on a position of the human body, and controls the communication circuit to transmit the transmission power through the transmission beam. Other embodiments of the present invention are possible.

Description

TECHNICAL FIELD The method of transmitting wireless power and an electronic device thereof TECHNICAL FIELD

Various embodiments of the present disclosure relate to a method of transmitting wireless power and an electronic device thereof.

Efforts are being made to develop an improved 5G (5th generation) communication system or a pre-5G communication system in order to meet the increasing demand for wireless data traffic after the commercialization of 4G (4th generation) communication systems. For this reason, the 5G communication system or the pre-5G communication system is called a Beyond 4G Network communication system or a Long Term Evolution (LTE) system (Post LTE) system.

In order to achieve a high data rate, the 5G communication system is considered to be implemented in a high frequency (mmWave) band (eg, 60 gigabyte (60 GHz) band). In order to mitigate the path loss of radio waves in the high frequency band and increase the transmission distance of radio waves, in 5G communication systems, beamforming, massive MIMO, and Full Dimensional MIMO (FD-MIMO) ), array antenna, analog beam-forming, and large scale antenna technologies are being discussed.

In addition, in order to improve the network of the system, in 5G communication system, advanced small cell, advanced small cell, cloud radio access network (cloud RAN), ultra-dense network , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, CoMP (Coordinated Multi-Points), and interference cancellation The same technology development is being made.

In addition, in the 5G system, the advanced coding modulation (Advanced Coding Modulation, ACM) method of FQAM (Hybrid Frequency Shift Keying and Quadrature Amplitude Modulation) and SWSC (Sliding Window Superposition Coding), and advanced access technology, FBMC (Filter Bank Multi Carrier). ), NOMA (Non Orthogonal Multiple Access), and SCMA (Sparse Code Multiple Access) are being developed.

As 5G (5th generation communication) networks and IoT devices are developed and commercialized, interest in microwave power transmission technology is increasing. Microwave power transmission technology is a technology capable of wirelessly transmitting power to electronic devices located at a distance, and can provide high efficiency compared to wired power or battery replacement methods. However, the microwave power transmission technology that transmits power through beamforming needs to form a more concentrated beam toward a device that receives power in order to transmit power with high efficiency, so that a human body may be exposed to a large amount of high frequency. Accordingly, there may be a need for a solution capable of efficiently transmitting wireless power to an electronic device while minimizing the effect on the human body.

Various embodiments of the present disclosure disclose a method and apparatus for efficiently transmitting wireless power to an electronic device while minimizing an effect on a human body.

An electronic device according to various embodiments of the present disclosure includes a communication circuit, a sensor module, and a processor operatively coupled to the communication circuit and the sensor module, wherein the processor is Determine a transmission beam and a reception beam for an external electronic device, detect a human body through the sensor module, determine transmission power to be transmitted to the external electronic device based on the position of the human body, and determine the transmission power to be transmitted to the external electronic device through the transmission beam. The communication circuit may be controlled so that transmission power is transmitted.

A method of operating an electronic device according to various embodiments of the present disclosure includes: determining, by a processor of the electronic device, a transmission beam and a reception beam for an external electronic device through a communication circuit of the electronic device, and the processor is a sensor module of the electronic device. Detecting a human body through the body, determining, by the processor, transmission power to be transmitted to the external electronic device based on the position of the human body, and the communication so that the processor transmits the transmission power through the transmission beam It may include controlling the circuit.

Various embodiments of the present invention provide wireless power transmission by forming a transmission beam capable of transmitting wireless power to an electronic device while minimizing power transmitted in a direction in which the human body is located, and transmitting wireless power through the formed transmission beam. This effect on the human body can be minimized.

1 is an exemplary diagram illustrating an environment in which an electronic device transmits wireless power to an external electronic device according to various embodiments of the present disclosure.
2 is a block diagram of an electronic device according to various embodiments of the present disclosure.
3 is an exemplary diagram illustrating an example of a Cartesian coordinate system including a location of an external electronic device and a location of a human body in an electronic device according to various embodiments of the present disclosure.
4 is an exemplary diagram illustrating a method of adjusting transmission power based on a position of a human body in an electronic device.
5 is a flowchart illustrating a method of transmitting wireless power in an electronic device according to various embodiments of the present disclosure.
6 is a flowchart illustrating a method of determining transmission power to be transmitted to an external electronic device based on a position of a human body in an electronic device according to various embodiments of the present disclosure.

Hereinafter, a method and an electronic device for transmitting wireless power according to the present invention will be described with reference to the accompanying drawings.

In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

The embodiments and terms used therein are not intended to limit the technology described in this document to a specific embodiment, and should be understood to include various changes, equivalents, and/or substitutes for the corresponding embodiment. In connection with the description of the drawings, similar reference numerals may be used for similar elements. Singular expressions may include plural expressions unless the context clearly indicates otherwise. In this document, expressions such as "A or B" or "at least one of A and/or B" may include all possible combinations of items listed together. Expressions such as "first", "second", "first", or "second" can modify the corresponding elements regardless of their order or importance, and are used to distinguish one element from another. However, it does not limit the corresponding components. When any (eg, first) component is referred to as being “(functionally or communicatively) connected” or “connected” to another (eg, second) component, the component is It may be directly connected to the component, or may be connected through another component (eg, a third component).

In this document, "configured to" means "suitable for", "having the ability to ...", "modified to" depending on the situation, for example, in hardware or software. It may be used interchangeably with ", "made to", "can do", or "designed to". In some situations, the expression "a device configured to" may mean that the device "can" along with other devices or parts. For example, the phrase “a processor configured (or configured) to perform A, B, and C” means a dedicated processor (eg, an embedded processor) for performing the operation, or by executing one or more software programs stored in a memory device. , May mean a general-purpose processor (eg, a CPU or an application processor) capable of performing the corresponding operations.

1 is an exemplary diagram illustrating an environment in which an electronic device transmits wireless power to an external electronic device according to various embodiments of the present disclosure.

According to various embodiments, the electronic device 101 may determine a transmission beam and a reception beam for transmitting data communication or wireless power with a plurality of external electronic devices 103-1 and 103-3. For example, the electronic device 101 performs beam training with a plurality of external electronic devices 103-1 and 103-3, so that each of the plurality of external electronic devices 103-1 and 103-3 A transmit beam and a receive beam for may be determined.

According to various embodiments, the electronic device 101 may determine transmission power to be transmitted to the external electronic device 103-1 or 103-3 through the determined transmission beam. For example, the electronic device 101 measures the received signal strength indication (RSSI) from the external electronic device 103-1 or 103-3, or the external electronic device 103-1 or 103-3 -3) by receiving location information (e.g., coordinate information), to identify the distance between the electronic device and the external electronic device (103-1 or 103-3), and based on the identified distance, the external electronic device (103-1) Alternatively, transmission power to be transmitted to 103-3) may be determined.

According to various embodiments, the electronic device 101 may adjust transmission power to be transmitted to the external electronic device 103-1 or 103-3 based on a position of a human body located around the electronic device 101. For example, the electronic device 101 identifies a location of a human body located around the electronic device 101, and transmits it to the external electronic device 103-1 or 103-1 based on the identified location of the human body. The influence of the determined transmission power on the human body (eg, the amount of wireless power) can be identified, and the transmission power can be adjusted based on the effect of the wireless power on the human body.

According to various embodiments, the electronic device 101 may transmit the adjusted transmission power based on the influence on the human body to the external electronic device 103-1 or 103-3 through the transmission beam.

2 is a block diagram of an electronic device according to various embodiments of the present disclosure. 3 is an exemplary diagram illustrating an example of a Cartesian coordinate system including a location of an external electronic device and a location of a human body in an electronic device according to various embodiments of the present disclosure. 4 is an exemplary diagram illustrating a method of adjusting transmission power based on a position of a human body in an electronic device.

2 to 4, the electronic device 200 (for example, the electronic device 101 of FIG. 1) includes a processor 220, a memory 230, a sensor module 240, a communication circuit 250, and And an antenna module 260. However, it is not limited thereto. For example, the electronic device 200 may further include an input device for receiving an input and/or a display for outputting information.

According to various embodiments, the processor 220 may control a plurality of hardware or software components connected to the processor 220 by driving an operating system or an application, and may perform various data processing and operations. According to an embodiment, the processor 220 may be implemented as a system on chip (SoC). The processor 220 may load and process instructions or data received from at least one of the other components into the memory 230 and store various data in the memory 230.

According to various embodiments, the processor 220 may transmit data communication and/or wireless power with an external electronic device (eg, the external electronic device 103-1 or 103-3 of FIG. 1). The transmission beam and the reception beam can be determined. For example, the processor 220 may determine a transmission beam and a reception beam for the external electronic device by performing beam training with the external electronic device through the communication circuit 250.

According to various embodiments, the processor 220 may detect a human body located around the electronic device 200. For example, the processor 220 may detect a human body located around the electronic device 200 through the sensor module 240.

))로 나타낼 수 있다. 이 경우, 전자 장치(301)의 위치는

로 나타내고, 외부 전자 장치의 위치는

로 나타내고, 인체의 위치는

로 나타낼 수 있다.According to various embodiments, the processor 220 may represent the electronic device 200, the external electronic device, and the positions of the human body in a Cartesian coordinate system. For example, as shown in FIG. 3, the processor 220 determines the positions of the electronic device 301, the external electronic device 303, and the human body 305 in a spherical coordinate system (distance (r), elevation angle (θ), azimuth angle). (

)). In this case, the location of the electronic device 301 is

And the location of the external electronic device is

And the position of the human body is

It can be expressed as

According to various embodiments, the processor 220 may determine a distance between the electronic device 200 and the external electronic device and the electronic device 200 based on a Cartesian coordinate system including the electronic device 200, the external electronic device, and the position of the human body. ) And the human body. For example, the processor 220 may identify _{the distance (d k,n} ) between the electronic device 200 and the external electronic device using Equation 1 below.

For another example, the processor 220 may identify _{the distance (d l,n} ) between the electronic device 200 and the human body using Equation 2 below.

)을 산출할 수 있다.According to various embodiments, the processor 220 may determine transmission power to be transmitted to the external electronic device based on the distance between the electronic device 200 and the external electronic device. _{For example, the processor 220 calculates a transmission coefficient (Y k,n} ) based on the distance between the electronic device 200 and the external electronic device using <Equation 3> below, and the following <Equation 4 Transmit power based on the transmit coefficient (Y _{k,n) using>}

) Can be calculated.

는 파장을 나타내고,

는

와

방향을 향한 전자 장치(200)의 송신 안테나 이득을 나타내고,

는 외부 전자 장치의 안테나 이득을 나타낼 수 있다. <수학식 4>에서, R_n은 전자 장치(200)의 안테나 소자의 방사 저항을 나타내고, V_n은 전자 장치(200)의 안테나 소자의 전송 전압을 나타낼 수 있다.In <Equation 3>,

Represents the wavelength,

Is

Wow

Represents the transmit antenna gain of the electronic device 200 facing the direction,

May denote an antenna gain of an external electronic device. In Equation 4, R _n denotes the radiation resistance of the antenna element of the _{electronic device 200, and V n} denotes the transmission voltage of the antenna element of the electronic device 200.

이고, 높이가

인 사각 영역) 및 사각 영역의 포인팅 벡터(x)를 결정하고, 인체를 포함하는 일정 크기의 영역에서 표면 적분을 통해 인체를 포함하는 일정 크기의 영역에 대한 복사 전력을 산출함으로써, 송신 전력에 의해 인체로 방사되는 전력을 산출할 수 있다. 구체적으로, 프로세서(220)는 아래의 <수학식 5>를 이용하여 전자 장치(200)와 포인팅 벡터(x) 간의 전송 계수(W_l,n(x))를 산출하고, <수학식 6>을 이용하여 인체를 포함하는 일정 크기의 영역에 대한 복사 전력(예: 인체로 방사되는 전력)을 계산함으로써, 송신 전력에 의해 인체로 방사되는 전력을 산출할 수 있다.According to various embodiments, the processor 220 may calculate power (or radiated power) radiated to the human body by transmission power. For example, the processor 220 is a region of a certain size including the human body (for example, the width is

And the height is

In rectangular area) and the pointing vector (x) of the rectangular area are determined, and radiated power for a specific-sized area including the human body is calculated through surface integration in a specific-sized area including the human body. The power radiated to the human body can be calculated. _{Specifically, the processor 220 calculates a transmission coefficient (W l,n} (x)) between the electronic device 200 and the pointing vector (x) using <Equation 5> below, and <Equation 6> By calculating radiated power (eg, power radiated to the human body) for an area of a certain size including the human body by using, the power radiated to the human body by the transmission power can be calculated.

는 파장을 나타내고,

는

및

방향을 향한 전자 장치(200)의 안테나 이득을 나타낼 수 있다. <수학식 6>에서,

는 인체의 포인팅 벡터(x)에 다한 전자 장치(200)의 안테나의 전기장을 나타내고,

는 평면파의 고유 임피던스를 나타낼 수 있다. In <Equation 5>,

Represents the wavelength,

Is

And

It may represent an antenna gain of the electronic device 200 facing a direction. In <Equation 6>,

Denotes the electric field of the antenna of the electronic device 200 that has reached the pointing vector x of the human body,

May represent the intrinsic impedance of a plane wave.

According to various embodiments, the processor 220 may adjust the transmission power when the power radiated to the human body exceeds a reference power (eg, an electromagnetic wave exposure allowable value). Specifically, the radiated power for a region of a certain size including the human body may be expressed as a quadratic constrained quadratic optimization problem (QCQP), as shown in FIG. 4, and the processor 220 provides an optimal solution to the problem of FIG. 4. By obtaining, it is possible to calculate a transmission power capable of transmitting optimal power to an external electronic device while the power radiated to the human body does not exceed the reference power. According to an embodiment, the processor 220 converts the problem of FIG. 4 into a convex problem in order to derive an optimal solution to the problem of FIG. 4, and then convex it through an algorithm such as the interior point method. The power radiated to the human body does not exceed the reference power by obtaining a solution to a problem and calculating a solution approximated to the problem of FIG. 4 using rank-one matrix decomposition and Gaussian randomization. In addition, transmission power capable of transmitting optimal power to an external electronic device may be calculated.

According to various embodiments, the sensor module 240 may detect a human body located around the electronic device 200. According to an embodiment, the sensor module 240 may detect an object, such as an image sensor, a depth image sensor, or an ultrasonic sensor, and identify a distance between the electronic device 200 and the detected object. It can include any sensor that is present.

According to various embodiments, the communication circuit 250 is electrically connected to the antenna module 260, and may transmit a signal to the outside or receive a signal from the outside through the antenna module 260. According to an embodiment, the communication circuit 250 is a short-range communication technique such as Bluetooth, WiFi direct, or infrared data association (IrDA), or a telecommunication network such as a cellular network, the Internet, or a computer network (eg, LAN or WAN). You can apply.

5 is a flowchart illustrating a method of transmitting wireless power in an electronic device according to various embodiments of the present disclosure.

Referring to FIG. 5, in operation 501, a processor (eg, the processor 220 of FIG. 2) of an electronic device (eg, the electronic device 101 of FIG. 1 or the electronic device 200 of FIG. 2) is an external electronic device. A transmit beam and a receive beam for may be determined. For example, the processor 220 may determine a transmission beam and a reception beam for the external electronic device by performing beam training with the external electronic device through the communication circuit 250. According to an embodiment, the processor 220 may identify the location of the external electronic device in response to determining the transmission beam and the reception beam for the external electronic device. For example, the processor 220 may identify the location of the external electronic device by obtaining location information of the external electronic device through the communication circuit 250. According to an embodiment, the processor 220 may periodically or non-periodically perform beam training with an external electronic device, and may change at least one of a transmission beam and a reception beam for an external electronic device based on a result of performing the beam training. .

In operation 503, the processor 220 may detect a human body through the sensor module 240. For example, the processor 220 may detect a human body located around the electronic device 200 through an image sensor, a depth image sensor, or an ultrasonic sensor. According to an embodiment, in response to detecting the human body, the processor 220 identifies the distance between the electronic device 200 and the external electronic device and the distance between the electronic device 200 and the human body, and based on the identified distance. It is possible to create a Cartesian coordinate system representing the location of the external electronic device and the location of the human body in terms of distance, elevation angle, and azimuth angle.

In operation 505, the processor 220 may determine transmission power to be transmitted to the external electronic device based on the position of the human body. For example, the processor 220 determines the transmission power to be transmitted to the external electronic device based on the distance between the electronic device 200 and the external electronic device, and based on the determined transmission power and the distance between the electronic device 200 and the human body. Thus, the power radiated to the human body (radiated power) is calculated, and when the calculated radiated power exceeds a reference power (eg, an electromagnetic wave exposure allowance), the transmission power can be adjusted so that the radiated power does not exceed the reference power. For another example, when the calculated radiated power does not exceed a reference power (eg, an electromagnetic wave exposure allowance), the processor 220 determines the determined transmission power and the calculated transmission power based on the distance between the electronic device 200 and the human body. Can be maintained.

In operation 507, the processor 220 may control the communication circuit 250 so that the determined transmission power is transmitted to an external electronic device through a transmission beam.

As described above, when transmitting wireless power to an external electronic device, the electronic device 200 transmits the power to the external electronic device in consideration of the effect of the transmission power to be transmitted to the external electronic device on the human body located around the electronic device. By determining the transmission power to be performed, wireless power can be efficiently transmitted to an external electronic device while minimizing the influence of the transmission power on the human body.

6 is a flowchart illustrating a method of determining transmission power to be transmitted to an external electronic device based on a position of a human body in an electronic device according to various embodiments of the present disclosure. The following description may be a detailed operation of an operation of determining transmission power to be transmitted to an external electronic device based on a position of a human body in operation 505 of FIG. 5.

Referring to FIG. 6, in operation 601, a processor (eg, the processor 220 of FIG. 1) of an electronic device (eg, the electronic device 101 of FIG. 1 or the electronic device 200 of FIG. 2) is an electronic device ( 200) and the transmission power for wireless charging of the external electronic device may be determined based on the distance between the external electronic device. For example, the processor 220 identifies the distance between the electronic device 200 and the external electronic device based on a Cartesian coordinate system including the location of the external electronic device and the position of the human body, and based on the identified distance, the external electronic device It is possible to determine the transmit power for wireless charging.

In operation 603, the processor 220 may calculate power radiated to the human body based on the transmission power and the distance between the electronic device and the human body. For example, the processor 220 identifies the distance between the electronic device 200 and the human body based on the Cartesian coordinate system including the location of the external electronic device and the location of the human body, determines a predetermined size area including the human body, and , Power radiated to the human body may be calculated by calculating the radiated power for a region of a predetermined size including the human body based on the transmission power and the distance between the electronic device and the human body.

In operation 605, the processor 220 may determine whether the power radiated to the human body exceeds the reference power. When the power radiated to the human body exceeds the reference power, the processor 220 performs operation 607, and when the power radiated to the human body is less than or equal to the reference power, the algorithm may be terminated.

In operation 607, when the power radiated to the human body exceeds the reference power, the processor 220 may adjust the transmission power so that the power radiated to the human body does not exceed the reference power. According to an embodiment, the radiated power for an area of a certain size including the human body may be expressed as a quadratic constrained quadratic optimization problem (QCQP), as shown in FIG. 4, and the processor 220 is optimal for the problem of FIG. 4. By obtaining the solution, it is possible to calculate a transmission power capable of transmitting optimal power to an external electronic device while the power radiated to the human body does not exceed the reference power. According to an embodiment, the processor 220 converts the problem of FIG. 4 into a convex problem in order to derive an optimal solution to the problem of FIG. 4, and then convex it through an algorithm such as the interior point method. The power radiated to the human body does not exceed the reference power by obtaining a solution to a problem and calculating a solution approximated to the problem of FIG. 4 using rank-one matrix decomposition and Gaussian randomization. Without doing so, it is possible to calculate wireless power capable of transmitting optimal power to an external electronic device.

As described above, when transmitting wireless power to an external electronic device, the electronic device 200 determines the effect of the transmission power on a human body located around the electronic device 100, and determines the transmission power based on the determination result. By adjusting or maintaining, it is possible to efficiently transmit wireless power to an external electronic device while minimizing the influence of the transmission power on the human body.

The term "module" used in this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic blocks, parts, or circuits. The module may be an integrally configured component or a minimum unit of the component or a part thereof 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 a storage medium that can be read by a machine (eg, the electronic device 101 of FIG. 1 or the electronic device 200 of FIG. 2) (eg, the memory of FIG. 2 ). 230)), and may be implemented as software including one or more instructions. For example, the processor of the device (eg, the electronic device 200 of FIG. 2) (eg, the processor 220 of FIG. 2) calls at least one instruction among one or more instructions stored from a storage medium, and You can do it. This may enable the device to be operated to perform at least one function according to the at least one instruction called. One or more instructions may include code generated by a compiler or code that can be executed by an interpreter. A storage medium that can be read by a device 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 (e.g., electromagnetic waves), and this term refers to the case where data is semi-permanently stored in the storage medium. It does not distinguish between temporary storage cases.

According to various embodiments, each component (eg, module or program) of the above-described components may include a singular number 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 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 in the same or similar to that 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 may be sequentially, parallel, repeatedly, or heuristically executed, or one or more of the operations may be executed in a different order or omitted. , Or one or more other actions may be added.

200: electronic device
220: processor
230: memory
240: sensor module
250: communication circuit
260: antenna module

Claims (10)

Communication circuit;
Sensor module; And
And a processor operatively coupled to the communication circuit and the sensor module, the processor,
Determining a transmission beam and a reception beam for an external electronic device through the communication circuit,
Detecting the human body through the sensor module,
Determining transmission power to be transmitted to the external electronic device based on the position of the human body, and
An electronic device that controls the communication circuit so that the transmission power is transmitted through the transmission beam.
The method of claim 1,
The sensor module,
An electronic device including at least one of an image sensor, a depth image sensor, and an ultrasonic sensor.
The method of claim 1,
The processor,
By receiving the location information of the external electronic device through the communication circuit, to identify the location of the external electronic device, and
An electronic device that generates a Cartesian coordinate system representing the location of the external electronic device and the location of the human body in terms of distance, elevation angle, and azimuth angle.
The method of claim 3,
The processor, as at least part of an operation of determining transmission power to be transmitted to the external electronic device,
A transmission power corresponding to a distance between the electronic device and the external electronic device is determined based on the orthogonal coordinate system,
Calculating power radiated to the human body based on the transmission power and the distance between the electronic device and the human body, and
An electronic device that adjusts the transmission power based on the power radiated to the human body.
The method of claim 4,
The processor, as at least part of an operation of adjusting the transmission power based on the power radiated to the human body,
When the power radiated to the human body exceeds the reference power, the transmission power is adjusted so that the power radiated to the human body does not exceed the reference power, and
An electronic device that maintains the transmission power when the power radiated to the human body is less than or equal to a reference power.
Determining, by a processor of the electronic device, a transmission beam and a reception beam for an external electronic device through a communication circuit of the electronic device;
Detecting, by the processor, a human body through a sensor module of the electronic device;
Determining, by the processor, transmission power to be transmitted to the external electronic device based on the position of the human body; And
And controlling, by the processor, the communication circuit so that the transmission power is transmitted through the transmission beam.
The method of claim 6,
The sensor module,
A method of operating an electronic device including at least one of an image sensor, a depth image sensor, and an ultrasonic sensor.
The method of claim 6,
Identifying a location of the external electronic device by receiving, by the processor, location information of the external electronic device through the communication circuit; And
And generating, by the processor, a Cartesian coordinate system representing the location of the external electronic device and the location of the human body in terms of a distance, an elevation angle, and an azimuth angle.
The method of claim 8,
Determining the transmission power to be transmitted to the external electronic device,
Determining, by the processor, a transmission power corresponding to a distance between the electronic device and the external electronic device based on the orthogonal coordinate system;
Calculating, by the processor, power radiated to the human body based on the transmission power and a distance between the electronic device and the human body; And
And adjusting, by the processor, the transmission power based on the power radiated to the human body.
The method of claim 9,
Adjusting the transmission power based on the power radiated to the human body,
When the power radiated to the human body exceeds a reference power, adjusting, by the processor, the transmission power so that the power radiated to the human body does not exceed the reference power; And
And maintaining, by the processor, the transmission power when the power radiated to the human body is less than or equal to the reference power.

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