Transmission power control method and electronic equipment

Abstract

The present application discloses a transmission power control method and electronic device, which relate to the field of radio frequency and can increase the total transmission power within a corresponding SAR time period while ensuring safety standards, thereby improving the user experience. The transmission power control method is applied to an electronic device and includes: obtaining a target distance between the electronic device and a user; within a first time period, if the target distance is greater than a first distance threshold, not integrating the transmission power of the electronic device; within a second time period, if the target distance is less than or equal to the first distance threshold, integrating the transmission power of the electronic device within the second time period to obtain the transmission energy of the electronic device within a preset time period; the preset time period includes the first time period and the second time period; and if the transmission energy is greater than the transmission energy threshold, reducing the transmission power of the electronic device.

Description

Technical Field

[0001] The present application relates to the field of radio frequency, and in particular to a transmission power control method and electronic equipment. Background Art

[0002] With the development of communication and electronic technology, the electromagnetic radiation generated by electronic devices such as mobile phones to the human body has always attracted much attention, and the specific absorption rate (SAR) is a key indicator for evaluating the safety of electromagnetic radiation.

[0003] Currently, many safety standards set limits on SAR (Special Response), ensuring that electromagnetic radiation from electronic devices to the human body remains within safe limits. While standards vary slightly from country to country, these standards all limit the average SAR of exposed tissue over any continuous period of time. In other words, they limit the electromagnetic energy generated by the transmission power of electronic devices over any continuous period of time.

[0004] However, in practice, within any continuous time period, the electromagnetic energy generated by a transmission power close to the target may have a high impact on the human body, while the electromagnetic energy generated by a transmission power far from the target may have no or low impact on the human body. However, these transmission powers are all subject to limits. Therefore, it is impossible to determine the impact of electromagnetic energy generated by the current transmission power on the human body. As a result, all actual transmission powers in any continuous time period are integrated, reducing the total transmission power within the SAR time period and thus affecting the user experience. Summary of the Invention

[0005] The embodiments of the present application provide a transmission power control method and electronic device, which can identify transmission power that has no radiation or has low radiation to the human body based on the target distance between the electronic device and the user, and do not integrate or integrate proportionally during the time period corresponding to the transmission power. On the basis of ensuring safety standards, the total transmission power in the corresponding SAR time period is increased, thereby improving the user experience.

[0006] To achieve the purpose, the embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, a transmission power control method is provided, which is applied to an electronic device, the method comprising: obtaining a target distance between the electronic device and a user; within a first time period, if the target distance between the electronic device and the user is greater than a first distance threshold, not integrating the transmission power of the electronic device; within a second time period, if the target distance between the electronic device and the user is less than or equal to the first distance threshold, integrating the transmission power of the electronic device within the second time period to obtain the transmission energy of the electronic device within a preset time period; the preset time period includes the first time period and the second time period; and when the transmission energy is greater than the transmission energy threshold, reducing the transmission power of the electronic device.

[0008] The above-mentioned transmission power control method does not integrate the transmission power of the electronic device in the first time period when the target distance between the electronic device and the user is greater than the first distance threshold. The transmission power of the electronic device in the second time period is integrated only when the target distance between the electronic device and the user is less than or equal to the first distance threshold, and the transmission power of the electronic device is reduced when the transmission energy is greater than the transmission energy threshold. The transmission power that does not radiate or radiates less to the human body can be identified based on the target distance between the electronic device and the user. The time period corresponding to the transmission power is not integrated or is integrated proportionally. The total transmission power in the corresponding SAR time period is increased on the basis of ensuring safety standards, thereby improving the user experience.

[0009] In an implementation method of the first aspect, if the target distance between the electronic device and the user is less than or equal to a first distance threshold, the transmission power of the electronic device in the second time period is power integrated to obtain the transmission energy of the electronic device in the preset time period, including: when the target distance between the electronic device and the user is greater than the second distance threshold, the second power in the second time period is power integrated to obtain the first transmission energy of the electronic device in the preset time period; the second distance threshold is less than the first distance threshold; the second power is less than the first power; the first power is the transmission power when the distance between the electronic device and the user is the second distance threshold, and the second power is the transmission power when the distance between the electronic device and the user is the target distance.

[0010] In this implementation, if the target distance between the electronic device and the user is less than or equal to the first distance threshold and greater than the second distance threshold, it indicates that when the distance between the electronic device and the user is the target distance, the electromagnetic energy generated by the transmission power is relatively safe for radiation to the human body, and there is no need to consider the electromagnetic energy generated by the actual transmission power. The electronic device can transmit at the first power when the target distance between the electronic device and the user is the second distance threshold, and determine that when the target distance between the electronic device and the user is any distance greater than the second distance threshold and less than or equal to the first distance threshold, the corresponding equivalent transmission power is the second power, so that the second power in the second time period can be power integrated to obtain the first transmission energy of the electronic device in the preset time period.

[0011] In an implementation manner of the first aspect, the second power is obtained based on the first power and a radiation coefficient; the radiation coefficient is greater than or equal to 0 and less than 1.

[0012] In this implementation, the radiation coefficient is related to the square of the target distance between the electronic device and the user and the square of the second distance threshold, and is the ratio of the square of the second distance threshold to the square of the target distance between the electronic device and the user. Since the target distance between the electronic device and the user is greater than the second distance threshold and less than or equal to the first distance threshold, the radiation coefficient is greater than or equal to 0 and less than 1. The second power is the target distance between the electronic device and the user. When the distance between the electronic device and the user is greater than the second distance threshold and less than or equal to the first distance threshold, the equivalent transmission power determined by transmitting at the first power when the distance to the user is the second distance threshold can be obtained based on the first power and the radiation coefficient.

[0013] In an implementation manner of the first aspect, the second power is obtained based on the first power and the radiation coefficient, satisfying the following formula: P2=P1+10log(a); wherein P2 represents the second power, P1 represents the first power, and a represents the radiation coefficient.

[0014] In this implementation, the second power is obtained according to the formula P2=P1+10log(a). When the target distance between the electronic device and the user is the second distance threshold, the first power is used for transmission to accurately obtain the target distance to the user. When the target distance is greater than the second distance threshold and less than or equal to the first distance threshold, the corresponding equivalent transmission power is used to ensure that the transmission energy is within a safe energy range.

[0015] In one implementation of the first aspect, the radiation coefficient is obtained based on a first specific absorption rate (SAR) and a second SAR; the first SAR is the SAR corresponding to the radiation emitted at a first power when the distance between the electronic device and the user is a second distance threshold; the second SAR is the SAR corresponding to the radiation emitted at a first power when the distance between the electronic device and the user is a target distance.

[0016] In this implementation, the radiation coefficient is obtained based on the second SAR and the first SAR, and the target distance between the electronic device and the user can be obtained as: when the target distance is greater than the second distance threshold and less than or equal to any distance between the first distance threshold, the first power is transmitted, and when the distance between the electronic device and the user is the second distance threshold, the first power is transmitted. The relative radiation coefficients of the two when transmitted at the first power are obtained, so that the second power can be accurately obtained subsequently.

[0017] In an implementation manner of the first aspect, the emissivity is a ratio of the second SAR to the first SAR.

[0018] In this implementation, the radiation coefficient is obtained based on the ratio of the second SAR to the first SAR, so that the second power can be accurately obtained subsequently.

[0019] In an implementation manner of the first aspect, the first SAR is an average SAR safety limit of the electronic device in a preset time period, and the first power is an average transmit power limit corresponding to the average SAR safety limit.

[0020] In this implementation, the first SAR is set to the average SAR safety limit of the electronic device in a preset time period, and the first power is the average transmit power limit corresponding to the average SAR safety limit, which can ensure that the transmit energy is within the safe energy range.

[0021] In one implementation method of the first aspect, if the target distance is less than or equal to the first distance threshold, the transmission power of the electronic device in the second time period is power integrated to obtain the transmission energy of the electronic device in the preset time period, including: when the target distance is less than or equal to the second distance threshold, the actual transmission power in the second time period is power integrated to obtain the second transmission energy of the electronic device in the preset time period.

[0022] In this implementation, if the target distance between the electronic device and the user is less than or equal to the second distance threshold, it indicates that the electromagnetic energy generated by the transmission power at the current target distance between the electronic device and the user is unsafe for human radiation, and the electromagnetic energy generated by the actual transmission power needs to be considered. Therefore, the electronic device performs power integration on the actual transmission power during the second time period to obtain the second transmission energy of the electronic device during the preset time period.

[0023] In a second aspect, an electronic device is provided, comprising a memory and one or more processors, wherein the memory stores computer program code, and the computer program code comprises computer instructions, which, when executed by the processor, enable the electronic device to execute the transmission power control method of the first aspect and any embodiment thereof.

[0024] In a third aspect, a computer-readable storage medium is provided, comprising computer instructions. When the computer instructions are executed on an electronic device, the electronic device executes the transmission power control method of the first aspect and any embodiment thereof.

[0025] In a fourth aspect, a computer program product is provided. When the computer program product is run on an electronic device, the electronic device executes the transmission power control method as described in the first aspect and any embodiment thereof.

[0026] Among them, the technical effects brought about by the design methods of the second, third and fourth aspects can refer to the technical effects brought about by the different design methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a possible hardware structure of an electronic device provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of a possible software structure of an electronic device provided in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of transmit power integration of a time averaging algorithm provided in related technology;

[0030] Figure 4 A flow chart of a transmission power control method provided in an embodiment of the present application;

[0031] Figure 5 A schematic diagram of a target distance between a user and a device provided in an embodiment of the present application;

[0032] Figure 6 A flowchart of a transmit power integration method in a transmit power control method provided in an embodiment of the present application;

[0033] Figure 7 A schematic diagram of the transmission power integration of a time averaging algorithm provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following describes the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings. In the description of this application, unless otherwise specified, " / " indicates that the objects associated with each other are in an "or" relationship. For example, A / B can mean A or B. "And / or" in this application is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, "A and / or B" can mean: A alone, A and B together, or B alone. A and B can be singular or plural. Furthermore, in the description of this application, unless otherwise specified, "multiple" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, "at least one of a, b, or c" can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit differences. At the same time, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete way for ease of understanding. The terms "coupling" and "connection" involved in the embodiments of the present application should be understood in a broad sense. For example, they can refer to a physical direct connection or an indirect connection achieved through an electronic device, such as a connection achieved through a resistor, inductor, capacitor or other electronic device.

[0035] The transmit power integral represents the total transmit energy of the device during a specific time period.

[0036] The specific absorption rate (SAR) is a physical quantity that measures the rate at which electromagnetic field energy is absorbed by biological tissue. It is commonly used to assess the impact of electromagnetic radiation (such as from mobile phones and microwave devices) on human health. SAR is the electromagnetic power absorbed per unit mass of biological tissue, measured in W / kg.

[0037] The time averaging algorithm is used to calculate the time average value of SAR, which is the average of the SAR value within a specific time period.

[0038] The International Commission on Non-Ionizing Radiation Protection (ICNIRP) is an international authority responsible for setting guidelines for limiting exposure to non-ionizing radiation. In its "Guidelines for Limiting Exposure to Electromagnetic Fields (100kHz to 300GHz)" (published in 2020), ICNIRP states:

[0039] In the frequency range of 100kHz-6GHz, the average SAR of any 10g tissue in the local exposure of the human body (head and torso) for any continuous 6 minutes should not exceed 2W / kg.

[0040] In the frequency range of 100kHz-6GHz, the average SAR of any 10g tissue in local exposure of the human body (limbs) for any continuous 6 minutes should not exceed 4W / kg.

[0041] This limit applies to both public and occupational exposures and is intended to prevent adverse health effects of electromagnetic radiation. In practice, SAR testing of electronic devices, such as mobile phones, is typically performed at close proximity to the human body (0-5mm). For other devices, such as base stations, the electromagnetic field strength decreases significantly at greater distances, so the SAR value typically does not exceed the limit.

[0042] The Institute of Electrical and Electronics Engineers standard IEEE C95.1 stipulates that for local exposure of the limbs, the SAR limit is also 4W / kg (average over 10 grams of tissue).

[0043] The U.S. Federal Communications Commission (FCC) sets standards to ensure the safety of wireless devices. These standards primarily specify SAR limits for the head and torso (1.6 W / kg, averaged over 1 gram of tissue). SAR limits for the limbs are not specified separately, but generally follow guidance from IEEE or ICNIRP.

[0044] An embodiment of the present application provides an electronic device having a display function. The electronic device can be mobile or fixed. The electronic device can be deployed on land (e.g., indoors or outdoors, handheld or vehicle-mounted), on water (e.g., on ships), or in the air (e.g., on airplanes, balloons, and satellites). The electronic device can be referred to as user equipment (UE), access terminal, terminal unit, subscriber unit, terminal station, mobile station (MS), mobile station, terminal agent, or terminal device. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, smart bracelet, smart screen, smart watch, virtual reality (VR) device, augmented reality (AR) device, terminal in industrial control, terminal in self-driving, terminal in remote medical care, terminal in smart grid, terminal in transportation safety, terminal in smart city, terminal in smart home, etc. The embodiments of the present application do not limit the specific type and structure of the electronic device. A possible structure of the electronic device is described below.

[0045] Take the mobile phone as an example, Figure 1 Figure 1 shows a possible structure of an electronic device 100. The electronic device 100 may include a processor 210, an external memory interface 220, an internal memory 221, a universal serial bus (USB) interface 230, a power management module 240, a battery 241, a wireless charging coil 242, a mobile communication module 250, a wireless communication module 260, antenna 1, antenna 2, an audio module 270, a speaker 270A, a receiver 270B, a microphone 270C, an earphone interface 270D, a sensor module 280, a button 290, a motor 291, an indicator 292, a camera 293, a display 294, and a subscriber identification module (SIM) card interface 295. Optionally, in some embodiments, an audio digital signal processor (ADSP) 243 is also included.

[0046] It should be understood that the structures illustrated in the embodiments of the present application do not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may include more or fewer components than shown, or may combine or separate certain components, or arrange the components differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0047] The processor 210 may include one or more processing units, such as a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processing unit (CPU), an application processor (AP), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, and a neural network processing unit (NPU). The different processing units may be independent devices or integrated into one or more processors. For example, the processor 210 may be an application processor (AP). Alternatively, the processor 210 may be integrated into a system on chip (SoC). Alternatively, the processor 210 may be integrated into an integrated circuit (IC) chip. The processor 210 may include an analog front end (AFE) and a micro-controller unit (MCU) in an IC chip.

[0048] Processor 210 may also include a memory for storing computer instructions and data. In some embodiments, the memory in processor 210 is a cache memory. This memory can store computer instructions or data that have just been used or are being recycled by processor 210. If processor 210 needs to use the computer instructions or data again, it can directly access the memory. This avoids repeated accesses, reduces processor 210 latency, and thus improves system efficiency.

[0049] In some embodiments, the processor 210 may include one or more interfaces, including an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a USB interface.

[0050] In some embodiments, the processor may be a processor or controller, such as a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the present disclosure. The aforementioned processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0051] The ADSP 243 can be coupled to the audio module 270 and the sensor module 280. The ADSP 243 can be used to process audio signals and sensor data. When the processor 210 is in a dormant state, the ADSP 243 can still keep working, thereby reducing the power consumption of the electronic device 100.

[0052] It is understood that the interface connection relationship between the modules illustrated in the embodiment of the present application is merely an illustrative illustration and does not constitute a structural limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may also adopt different interface connection methods from those in the embodiment, or a combination of multiple interface connection methods.

[0053] The external memory interface 220 can be used to connect an external memory card to expand the storage capacity of the electronic device 100. The external memory card communicates with the processor 210 through the external memory interface 220 to implement data storage functions. For example, files such as music and videos can be stored in the external memory card.

[0054] The internal memory 221 can be used to store computer-executable program code, which includes computer instructions. The processor 210 executes the computer instructions stored in the internal memory 221 to perform various functional applications and data processing of the electronic device 100. In addition, the internal memory 221 can include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc.

[0055] In the embodiment of the present application, when the computer instructions are executed by the processor 210, the electronic device 100 executes the transmission power control method in the embodiment of the present application.

[0056] The memory involved in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0057] The electronic device 100 can implement audio functions such as music playback and recording through the audio module 270, the speaker 270A, the receiver 270B, the microphone 270C, the headphone jack 270D, and the application processor.

[0058] Keys 290 include a power button, volume button, and other buttons. Keys 290 can be mechanical or touch-sensitive. Electronic device 100 can receive key inputs and generate key signal inputs related to user settings and function control of electronic device 100. Motor 291 can generate vibration alerts. Motor 291 can be used for incoming call vibration alerts or for touch vibration feedback. Indicator 292 can be an indicator light that can indicate charging status, battery level changes, messages, missed calls, notifications, and the like. SIM card interface 295 is used to connect a SIM card. A SIM card can be connected to and disconnected from electronic device 100 by inserting or removing it from SIM card interface 295. Electronic device 100 can support one or N SIM card interfaces, where N is a positive integer greater than one. SIM card interface 295 can support nano SIM cards, micro SIM cards, and SIM cards. In some embodiments, the electronic device 100 uses an embedded SIM (eSIM) card. The eSIM card can be embedded in the electronic device 100 and cannot be separated from the electronic device 100 .

[0059] The electronic device 100 can implement a camera function using an ISP, a camera 293, a video codec, a GPU, a display 294, and an application processor. The ISP is used to process data fed back by the camera 293. In some embodiments, the ISP can be provided within the camera 293. The camera 293 is used to capture still images or videos. In some embodiments, the electronic device 100 can include one or N cameras 293, where N is a positive integer greater than one.

[0060] Electronic device 100 can implement display functions through a GPU, display screen 294, and an application processor. A GPU is a microprocessor for image processing that connects display screen 294 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 210 may include one or more GPUs that execute computer instructions to generate or modify display information.

[0061] The power management module 240 is configured to receive charging input from a charger. The charger may be a wireless charger, such as a wireless charging dock or another electronic device 100 with reverse wireless charging functionality. The power management module 240 may receive wireless charging input via the electronic device's wireless charging coil 242. Alternatively, the charger may be a wired charger, for example, via the USB port 230. The power management module 240 is also referred to as a charging chip.

[0062] The power management module 240 is connected to the battery 241. The power management module 240 receives input from the battery 241 and provides power to the processor 210, internal memory 221, display 294, camera 293, and wireless communication module 260. The power management module 240 can also monitor parameters such as the battery 241 capacity, battery 241 cycle count, and battery 241 health status (leakage, impedance). In other embodiments, the power management module 240 can also be provided within the processor 210.

[0063] The wireless communication function of the electronic device 100 can be implemented through the antenna 1, the antenna 2, the mobile communication module 250, the wireless communication module 260, the modem processor, etc.

[0064] In the embodiment of the present application, the transmission power control method is used to reduce the transmission power of the electromagnetic energy transmitted by the electronic device 100, thereby improving the user experience.

[0065] The mobile communication module 250 can provide solutions for wireless communications such as 2G / 3G / 4G / 5G for the electronic device 100. The wireless communication module 260 can provide solutions for wireless communications such as wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite systems (GNSS), frequency modulation (FM), near field communication (NFC), and infrared (IR) for the electronic device 100.

[0066] As attached Figure 2 As shown, taking the electronic device 100 running the Android operating system as an example, the software architecture run by the processor 210 includes an application layer, a framework layer, a system runtime layer, a hardware abstraction layer (HAL) and a kernel layer.

[0067] The kernel layer is the layer between hardware and software. For example, it includes the display driver, camera driver, and RF driver. The display driver drives the display to display images or receive user touch operations, the camera driver drives the camera to capture image data, and the RF driver drives the radio.

[0068] In the embodiment of the present application, the radio frequency driver is used to drive the electronic device 100 , thereby reducing the transmission power of the electronic device 100 .

[0069] The HAL layer abstracts the hardware. It hides the platform-specific hardware interface details and provides the operating system with a virtual hardware platform, making it hardware-independent. For example, the HAL layer includes the display module, camera module, and radio frequency module. The display module is used to create a virtual display screen, the camera module is used to create a virtual camera, and the radio frequency module is used to create a virtual communication module.

[0070] The system runtime layer includes C / C++ libraries and runtime libraries. Many core components and services of the Android operating system are built from native code and require C / C++ libraries written in C and C++. When an application is first installed, the runtime library is precompiled into machine code, a process called pre-compilation. This allows for acceleration when the application is launched and executed by running the machine code.

[0071] The framework layer provides application programming interfaces (APIs) and a programming framework for applications in the application layer. The framework layer includes predefined implementation methods. For example, the framework layer includes the window manager, content provider, view system, and notification manager.

[0072] The application layer can include a series of application packages, such as photo, camera and other applications (application, app).

[0073] In related technologies, with the development of communication and electronic technologies, the issue of electromagnetic radiation generated by electronic devices such as mobile phones to the human body has always attracted much attention. The specific absorption rate (SAR) is a key indicator for evaluating the safety of electromagnetic radiation. SAR represents the electromagnetic energy absorbed by human tissue per unit mass per unit time and can be expressed using the following formula (1):

[0074] Formula (1);

[0075] Where σ is the tissue conductivity (Siemens / meter, S / m), which reflects the tissue's ability to conduct electromagnetic energy; |E| is the electric field strength (volts / meter, V / m), which indicates the strength of the electromagnetic field; and ρ is the tissue density (kilograms / cubic meter, kg / m³).

[0076] Currently, there are many safety standards that limit SAR, such as ICNIRP, IEEE C95.1, and FCC, to ensure that the electromagnetic radiation generated by electronic devices 100 to the human body is within safety limits. Although safety standards vary slightly from country to country, these safety standards all limit the average SAR of exposed human tissue over any continuous 6 minutes. In safety standards, limiting the average SAR of exposed human tissue over any continuous 6 minutes actually limits the SAR energy over any continuous 6 minutes. Therefore, the average SAR over any continuous 6 minutes can be expressed using the following formula (2):

[0077] Formula (2);

[0078] Where T is the time range, T = 6 minutes, t1 is the start time of the time range, t2 is the end time of the time range, SAR is the instantaneous SAR, SAR avg is the average SAR.

[0079] The electromagnetic radiation generated by the electronic device 100 to the human body can be expressed by integrating the transmission power P of the electronic device 100. The transmission power integral represents the total electromagnetic energy radiated by the electronic device 100 in the time range t1 to t2, in joules (J), and can be expressed using the following formula (3):

[0080] Transmit power integral = Formula (3);

[0081] Where, P is the instantaneous transmission power, P avg is the average transmit power (unit: watt, W), T is the time range, corresponding to the above standard T = 6 minutes, t1 is the start time of the time range, and t2 is the end time of the time range.

[0082] The relationship between the electric field strength |E| and the transmission power P can be expressed by the following formula (4):

[0083] Formula (4);

[0084] Wherein, k is a coefficient, and d is the target distance between the measurement point and the antenna. Generally, the measurement point is the user's location, and the antennas are included in the electronic device 100, such as antenna 1 and antenna 2. Since the antennas are located at the same location as the electronic device 100, the distance between the measurement point and the antenna is the target distance between the user and the electronic device 100 (unit: m).

[0085] According to formula (2), formula (3) and formula (4), by substituting formula (4) and formula (3) into formula (2), we can obtain the following formula (5):

[0086] Formula (5);

[0087] Among them, k1 is the coefficient, , d is the target distance between the measurement point and the antenna, that is, the target distance between the user and the electronic device 100 (unit: m).

[0088] According to the above formulas (1) to (5), when the target distance d between the user and the electronic device 100 is constant, the average SAR of the exposed tissue of the human body in any continuous 6 minutes is equal to the average transmission power P of the electronic device 100. avg In direct proportion. Average transmission power P avg The larger the value, the larger the average SAR value, and the average transmission power P avg The smaller the value, the smaller the average SAR value. avg Under certain circumstances, the greater the target distance d between the user and the electronic device 100, the smaller the average SAR of the exposed human tissue in any continuous 6 minutes, and the smaller the target distance d between the user and the electronic device 100, the greater the average SAR of the exposed human tissue in any continuous 6 minutes.

[0089] Limiting the average SAR of human exposed tissues within any continuous 6 minutes is essentially limiting the electromagnetic energy generated by the transmission power P of the electronic device 100 within any continuous 6 minutes. Under a certain time range, since the electromagnetic energy is the integral of the transmission power P within the time range, it is essentially limiting the average transmission power P of the electronic device 100 within any continuous 6 minutes. avg For example, as shown in the attached Figure 3 As shown, referring to the transmission power P, the transmission power P of the electronic device 100 is not fixed, and there are high-power transmission power P (for example, 23dBm) and low-power transmission power P (for example, 17dBm). avg_t , for any continuous 6 minutes, the average transmission power P of the electronic device 100 avg Limit the value to 20dBm. Refer to the average transmission power P for 6 minutes. avg , the average transmission power P of the electronic device 100 within any continuous 6 minutes avg After the limit is below 20dBm, the transmit power P is kept below 20dBm within 6 minutes.

[0090] However, in practice, within any continuous six-minute period, the electromagnetic energy generated by a closer target's transmit power P may have significant human radiation, while the electromagnetic energy generated by a farther target's transmit power P may have no or minimal human radiation. However, these transmit powers P are all subject to limits. Therefore, the actual human radiation level of the electromagnetic energy generated by the current transmit power P cannot be determined, resulting in a reduction in all actual transmit power Ps, thus impacting the user experience. For example, this can affect the intermittent high-power gaming, voice calls, and video streaming experiences.

[0091] To this end, an embodiment of the present application provides a transmit power control method. The electronic device 100 can, based on the target distance d between the electronic device 100 and the user, not integrate the transmit power P of the electronic device 100 during a first time period T1 when the target distance d between the electronic device 100 and the user is greater than a first distance threshold d1. The transmit power P of the electronic device 100 is integrated only during a second time period T2 when the target distance d between the electronic device 100 and the user is less than or equal to the first distance threshold d1. Furthermore, the transmit power P of the electronic device 100 is reduced when the transmit energy E is greater than a transmit energy threshold Et. This transmit power control method can identify transmit power P that has no or low human body radiation based on the target distance d between the electronic device 100 and the user, and either not integrate or integrate proportionally during the time period corresponding to the transmit power P. This method increases the total transmit power within the corresponding SAR time period while ensuring safety standards, thereby improving the user experience.

[0092] The embodiment of the present application takes the electronic device 100 including the transmission power control method as an example to specifically illustrate the transmission power control method of the present application. Figure 4 As shown, a transmit power control method provided in an embodiment of the present application may include steps S401-S403:

[0093] In step S401 , the electronic device 100 obtains a target distance d from the user.

[0094] In one possible implementation, the target distance d between the electronic device 100 and the user can be obtained through a distance sensor, or through ultrasound or antenna (antenna 1, antenna 2) impedance. The embodiment of the present application does not limit the method for obtaining the target distance d.

[0095] In the embodiment of the present application, when obtaining the target distance d between the electronic device 100 and the user, the target distance d between the electronic device 100 and a body part of the user is obtained.

[0096] In a possible implementation, the user's body part may be the head, or the trunk or limbs. The embodiment of the present application does not limit the characteristics of the user's body part.

[0097] In one possible implementation, when obtaining the target distance d between the electronic device 100 and the user, the posture of the electronic device 100 can be held by the user or placed alone. The embodiment of the present application does not limit the posture of the electronic device 100.

[0098] According to the formula (5) described above: SAR avg =k1*P avg / d 2 It can be seen that the average transmission power P of the electronic device 100 avg Under certain conditions, the greater the target distance d between the electronic device 100 and the user, the greater the average SAR (i.e., SAR) of the exposed tissue of the human body within any continuous 6 minutes. avg The smaller the target distance d between the electronic device 100 and the user, the smaller the average SAR (SAR) of the exposed tissue of the human body within any continuous 6 minutes. avg ), that is, the greater the radiation. Within a certain range of average SAR, that is, the average SAR is less than or equal to the average SAR threshold, there is essentially no impact on the human body and it can be considered that there is no radiation to the human body. However, if the average SAR exceeds a certain range, that is, the average SAR is greater than the average SAR threshold, the impact on the human body is non-negligible and it can be considered that there is radiation to the human body. Therefore, it is necessary to obtain the target distance d between electronic device 100 and the user to perform step S402 to determine whether the electromagnetic energy generated by the transmission power P has radiation to the human body.

[0099] In step S402 , the electronic device 100 integrates the transmission power P based on the target distance d between the electronic device 100 and the user and the first distance threshold d1 to obtain the transmission energy E within the preset time period T.

[0100] The preset time period T is the time period during which the electronic device 100 performs power integration on the transmit power P, and can be set according to actual needs. For example, it can be obtained by calculating the power integration of the transmit power P over multiple time periods, such as calculating the mean, median, or minimum value of the power integration of the transmit power P over multiple time periods. It can also be set based on empirical values, such as 6 minutes or 30 minutes.

[0101] The first distance threshold d1 is the distance at which the electromagnetic energy generated by the electronic device 100 with a power of P emits no radiation to the human body during any continuous preset time period T. This distance threshold can be set based on actual needs. For example, it can be obtained by counting multiple distances at which the electromagnetic energy generated by the electronic device 100 with a power of P emits no radiation to the human body during any continuous preset time period T, such as by calculating the mean, median, or minimum value of multiple distances at which the electromagnetic energy generated by the electronic device 100 with a power of P emits no radiation to the human body during any continuous preset time period T. It can also be set based on empirical values, such as 20 mm or 25 mm.

[0102] In this embodiment of the present application, the preset time period T is any continuous time period within different average SAR limit standards, such as 6 minutes or 30 minutes. The first distance threshold d1 is the distance at which the electromagnetic energy generated by the transmit power P during any continuous time period within different average SAR limit standards is completely irradiated to the human body, such as 20 mm or 25 mm.

[0103] In the embodiment of the present application, the preset time period T is 6 minutes, and the first distance threshold d1 is the distance corresponding to 6 minutes at which the electromagnetic energy generated by the transmission power P has no radiation to the human body, that is, 20 mm or 25 mm. In the following embodiments of the present application, the preset time period T is 6 minutes as an example to specifically illustrate a transmission power control method provided in the embodiment of the present application.

[0104] Since the first distance threshold d1 is the distance at which the electromagnetic energy generated by the transmission power P has no radiation to the human body, for example, as shown in the attached Figure 5 As shown, the first distance threshold d1 can be considered the dividing point between human body radiation exposure and non-radiation exposure. The farther away from the human body, the smaller the average SAR generated by the electronic device 100. Outside the range of the first distance threshold d1, there is essentially no impact on the human body and it can be considered that there is no radiation exposure. Only within the range of the first distance threshold d1 does there appear to be an impact on the human body and it can be considered that there is radiation exposure.

[0105] The electronic device 100 integrates the transmission power P based on the target distance d between the user and the first distance threshold d1 to obtain the transmission energy E within the preset time period T. This is to distinguish whether the electromagnetic energy generated by the current transmission power P is radiated to the human body. For example, as shown in the attached figure Figure 6 As shown, the specific process of the electronic device 100 integrating the transmission power P based on the target distance d between the electronic device 100 and the user and the first distance threshold d1 may include steps S4021-S4028:

[0106] Step S4021 : The electronic device 100 obtains a first SAR signal transmitted at a first power P1 when the target distance d between the electronic device 100 and the user is equal to the second distance threshold d2 .

[0107] The second distance threshold d2 is defined as the distance at which the electromagnetic energy generated by the electronic device 100 with a transmission power of P within any continuous preset time period T is relatively safe for human radiation, and can be set based on actual needs. For example, the second distance threshold d2 can be obtained by counting multiple distances at which the electromagnetic energy generated by the electronic device 100 with a transmission power of P is relatively safe for human radiation within any continuous preset time period T, such as the mean, median, or minimum value of multiple distances at which the electromagnetic energy generated by the electronic device 100 with a transmission power of P is relatively safe for human radiation within any continuous preset time period T. The second distance threshold d2 can also be set based on an empirical value, such as 5 mm.

[0108] In the embodiment of the present application, the preset time period T is 6 minutes, and the second distance threshold d2 is: the electromagnetic energy generated by the transmission power P of the electronic device 100 within any continuous 6 minutes, the relatively safe distance for the radiation to the human body, that is, 5mm. Figure 5 As shown, the second distance threshold d2 can be considered a relatively safe threshold for human radiation exposure. When the electronic device 100 is closer to the human body than the first distance threshold d1, the average SAR generated by the electronic device 100 is greater than the average SAR generated at the first distance threshold d1. Outside the range of the second distance threshold d2, the radiation exposure to the human body can be considered relatively safe. Within the range of the second distance threshold d2, the radiation exposure to the human body can be considered unsafe.

[0109] Since within the second distance threshold d2, that is, the distance d between the electronic device 100 and the user is less than or equal to the second distance threshold d2, which corresponds to a relatively safe distance for human radiation, the average SAR within any continuous preset time period T must not exceed the average SAR safety limit SAR. avg_t Therefore, the first SAR at the second distance threshold d2 can be set as the maximum average SAR, that is, the average SAR safety limit SAR avg_t , for example, 4W / kg or 2W / kg. Correspondingly, the first power P1 is emitted with an average SAR safety limit SAR avg_t The corresponding average transmit power limit P avg_t In this way, it can be ensured that within the range of the second distance threshold d2, at the farthest distance, that is, the second distance threshold d2, the maximum transmission power, that is, the average transmission power limit P avg_t , can meet the average SAR safety limit SAR avg_t the following.

[0110] Step S4022: Within the first time period T1, the electronic device 100 determines whether the target distance d between the electronic device 100 and the user is greater than a first distance threshold d1.

[0111] The first time period T1 is a time period within the preset time period T. During the first time period T1, the electronic device 100 determines whether the target distance d between the electronic device 100 and the user is greater than the first distance threshold d1. This is to determine whether the electromagnetic energy generated by the transmission power P at the current target distance d between the electronic device 100 and the user during the first time period T1 is radiating to the human body. If the target distance d between the electronic device 100 and the user is greater than the first distance threshold d1, this indicates that the electromagnetic energy generated by the transmission power P at the current target distance d between the electronic device 100 and the user is completely non-radiating to the human body, and the electromagnetic energy generated by the transmission power P can be disregarded, and step S4023 is executed. If the target distance d between the electronic device 100 and the user is less than or equal to the first distance threshold d1, this indicates that the electromagnetic energy generated by the transmission power P at the current target distance d between the electronic device 100 and the user has begun to radiate to the human body, and the electromagnetic energy generated by the transmission power P needs to be considered, and step S4024 is executed.

[0112] In step S4023, the electronic device 100 does not integrate the transmission power P.

[0113] When the target distance d between the electronic device 100 and the user is greater than the first distance threshold d1, the electromagnetic energy generated by the transmission power P at the current target distance d has no radiation to the human body and thus the electromagnetic energy generated by the transmission power P does not need to be considered. Therefore, the electronic device 100 does not integrate the transmission power P.

[0114] Step S4024: within the second time period T2, the electronic device 100 determines whether the target distance d between the electronic device 100 and the user is greater than a second distance threshold d2.

[0115] The second time period T2 is also a time period within the preset time period T. If the target distance d between the electronic device 100 and the user is less than or equal to the first distance threshold d1, this indicates that the electromagnetic energy generated by the transmission power P at the current target distance d has begun to radiate to the human body, and the electromagnetic energy generated by the transmission power P needs to be considered. Furthermore, within the second time period T2, the electronic device 100 determines whether the target distance d between the electronic device 100 and the user is greater than the second distance threshold d2. This is to determine whether the current target distance d is within a safe distance range and whether the electromagnetic energy generated by the transmission power P at the current target distance d is relatively safe for human radiation. If the target distance d between the electronic device 100 and the user is greater than the second distance threshold d2, this indicates that the electromagnetic energy generated by the transmission power P at the current target distance d is relatively safe for human radiation, and the electromagnetic energy generated by the actual transmission power P does not need to be considered. Step S4025 is executed. If the target distance d between the electronic device 100 and the user is less than or equal to the second distance threshold d2, this indicates that the electromagnetic energy generated by the transmission power P at the current target distance d is unsafe for human radiation, and the electromagnetic energy generated by the actual transmission power P needs to be considered. Step S4028 is executed.

[0116] Step S4025 : The electronic device 100 obtains a second SAR at the first power P1 when the target distance d is between the electronic device 100 and the user based on the second distance threshold d2 , the first SAR, and the target distance d between the electronic device 100 and the user.

[0117] When the target distance d between the electronic device 100 and the user is greater than the second distance threshold d2 and less than or equal to the first distance threshold d1, it indicates that the electromagnetic energy generated by the transmission power P at the current target distance d between the electronic device 100 and the user is relatively safe for radiation to the human body, and there is no need to consider the electromagnetic energy generated by the actual transmission power P. The electronic device 100 can transmit at the first power, and when the target distance d between the electronic device 100 and the user is the second distance threshold d2, it transmits at the first power P1, and determines that when the target distance d between the electronic device 100 and the user is any distance greater than the second distance threshold d2 and less than or equal to the first distance threshold d1, the corresponding equivalent transmission power is the second power P2.

[0118] According to formula (5): SAR avg =k1*P avg / d 2 When the target distance d between the electronic device 100 and the user is the second distance threshold d2, the average transmission power P avg is the first power P1, and the average SAR is the first SAR, that is, SAR avg_t , we can get the following formula (6):

[0119] First SAR=k1*P1 / d22 Formula (6);

[0120] When the target distance d between the electronic device 100 and the user is any distance greater than the second distance threshold d2 and less than or equal to the first distance threshold d1, since the electronic device 100 transmits at the first power P1 at the target distance d between the electronic device 100 and the user, the corresponding second SAR transmitted at the first power P1 can be obtained as follows:

[0121] Second SAR=k1*P1 / d 2 Formula (7);

[0122] Combining formula (6) and formula (7), we can get the following formula (8):

[0123] Second SAR = First SAR * d2 2 / d 2 Formula (8);

[0124] Therefore, the electronic device 100 can obtain the second SAR when transmitting at the first power P1 at the target distance d from the user based on the second distance threshold d2, the target distance d from the user, and the first SAR.

[0125] In step S4026 , the electronic device 100 obtains a second power P2 of a target distance d from the user based on the first power P1 , the first SAR, and the second SAR.

[0126] After the electronic device 100 transmits the corresponding second SAR at the first power P1 when the target distance d between the electronic device 100 and the user is determined, a second power P2 for the target distance d can be obtained based on the first power P1, the first SAR, and the second SAR. The second power P2 is essentially the equivalent transmit power P determined based on transmitting at the first power P1 at the target distance d between the electronic device 100 and the user, when the target distance d is greater than the second distance threshold d2 and less than or equal to the first distance threshold d1.

[0127] The electronic device 100 obtains the second power P2 of the target distance d from the user based on the first power P1, the first SAR, and the second SAR, and can use the following formula (9):

[0128] P2=P1+10log(α) formula (9);

[0129] The α in formula (9) can be expressed as follows (10):

[0130] α = second SAR / first SAR formula (10);

[0131] Substituting formula (8) into formula (9) and formula (10), we can obtain the following formula (11):

[0132] P2=P1+10log(d2 2 / d 2 ) formula (11);

[0133] Where α=d2 2 / d 2 .

[0134] Since the target distance d between the electronic device 100 and the user is greater than the second distance threshold d2 between the electronic device 100 and the user, 0<α<1, and the second power P2<first power P1. That is, when the target distance d between the electronic device 100 and the user is any distance greater than the second distance threshold d2 and less than or equal to the first distance threshold d1, the corresponding equivalent transmit power P determined by transmitting at the first power P1 when the target distance d between the electronic device 100 and the user is the second distance threshold d2 can be obtained, i.e., the second power P2.

[0135] In step S4027 , the electronic device 100 performs power integration on the second power P2 in the second time period T2 to obtain the first transmission energy E1 of the electronic device 100 in the preset time period T.

[0136] When the target distance d between the electronic device 100 and the user is greater than the second distance threshold d2 and less than or equal to the first distance threshold d1, since the target distance d between the electronic device 100 and the user is the second distance threshold d2, the first power P1 is transmitted, that is, the maximum power, that is, the average transmission power limit P avg_t , can also meet the safety requirements, that is, the first SAR is the maximum average SAR, that is, the average SAR safety limit SAR avg_t . Then, when transmitting at the first power P1 when the target distance d between the electronic device 100 and the user is the second distance threshold d2, the equivalent transmission power P when the target distance d between the electronic device 100 and the user is greater than the second distance threshold d2 and less than or equal to the first distance threshold d1 is determined, that is, the second power P2. And when the second power P2 in the second time period T2 is power-integrated, the final transmission energy obtained is also the maximum transmission energy. In order to ensure that the transmission energy is within the safe energy range, the electronic device 100 performs power integration on the second power P2 in the second time period T2 to obtain the first transmission energy E1 of the electronic device 100 in the preset time period T.

[0137] The transmit power control method described in steps S4025-S4026 above is based on transmitting at the first power P1 at the second distance threshold d2, and proportionally converting it to the corresponding equivalent transmit power P, i.e., the second power P2, at a target distance d greater than the second distance threshold d2 and less than or equal to the first distance threshold d1. In step S4027, power integration is performed on the corresponding equivalent transmit power P, i.e., the second power P2, during the second time period. This is essentially a proportional integration of the time period corresponding to the transmit power P. Therefore, the total transmit power within the corresponding SAR time period can be increased while ensuring safety standards, thereby improving the user experience.

[0138] In step S4028 , the electronic device 100 performs power integration on the actual transmission power P in the second time period T2 to obtain the second transmission energy E2 of the electronic device 100 in the preset time period T.

[0139] If the target distance d between the electronic device 100 and the user is less than or equal to the second distance threshold d2, it indicates that the electromagnetic energy generated by the transmission power P at the current target distance d between the electronic device 100 and the user is unsafe for human radiation, and the electromagnetic energy generated by the actual transmission power P needs to be considered. Therefore, the electronic device 100 performs power integration on the actual transmission power P within the second time period T2 to obtain the second transmission energy E2 of the electronic device 100 within the preset time period T.

[0140] In the transmit power control method described in steps S4021-S4028 above, the specific process of integrating transmit power P based on the target distance d between the electronic device 100 and the user and the first distance threshold d1 is as follows: during a first time period T1 when the target distance d between the electronic device 100 and the user is greater than the first distance threshold d1, the transmit power P of the electronic device 100 is not integrated. During a second time period T2 when the target distance d between the electronic device 100 and the user is less than or equal to the first distance threshold d1, the transmit power P of the electronic device 100 is integrated. Furthermore, during a second time period T2 when the target distance d between the electronic device 100 and the user is greater than the second distance threshold d2 and less than or equal to the first distance threshold d1, the second power P2 within the second time period T2 is integrated to obtain the first transmit energy E1 of the electronic device 100 within the preset time period T. During a second time period T2 when the target distance d between the electronic device 100 and the user is less than the second distance threshold d2, the actual transmit power P within the second time period T2 is integrated to obtain the second transmit energy E2 of the electronic device 100 within the preset time period T. It can distinguish whether the electromagnetic energy generated by the current transmission power P is radiable to the human body, and can ensure that the electromagnetic energy generated by the transmission power P is within the safe transmission energy range.

[0141] Step S403: When the transmission energy E is greater than the transmission energy threshold Et, the electronic device 100 reduces the transmission power P.

[0142] Among them, the emission energy threshold Et is the threshold when the emission energy E is unsafe for human radiation, and can be set according to actual needs. For example, it can be obtained by counting multiple emission energies E that are unsafe for human radiation, such as counting the mean, median, or minimum value of multiple emission energies E that are unsafe for human radiation; it can also be set according to empirical values. In the embodiment of the present application, the emission energy threshold Et is the average SAR safety limit SAR within any continuous 6 minutes. avg_t The corresponding emission energy E.

[0143] When the transmission energy E is greater than the transmission energy threshold Et, it indicates that the electromagnetic energy generated by the transmission power P is no longer safe for human radiation and the transmission power P needs to be reduced to protect the safety of the user. Therefore, the electronic device 100 reduces the transmission power P.

[0144] In the transmit power control method described in steps S401-S403 above, the electronic device 100 can, based on the target distance d between the user and the electronic device 100, not integrate the transmit power P of the electronic device 100 during a first time period T1 when the target distance d is greater than a first distance threshold d1. The transmit power P of the electronic device 100 is integrated only during a second time period T2 when the target distance d is less than or equal to the first distance threshold d1. Furthermore, when the transmit energy E is greater than the transmit energy threshold Et, the transmit power P of the electronic device 100 is reduced. Therefore, the target distance d between the electronic device 100 and the user can be used to identify transmit power P that has no or low human body radiation. Integration is not performed during the time period corresponding to this transmit power P, or integration is performed proportionally. The total transmit power in the corresponding SAR time period is increased while ensuring safety standards, thereby improving the user experience.

[0145] In the embodiments of the present application, for example, as shown in the attached Figure 7As shown, within a preset time period T = 6 minutes, the first time period T1 = 2 minutes, if the target distance d between the electronic device 100 and the user is greater than the first distance threshold d1, then the transmission power P of the electronic device 100 is not integrated. For example, during the first 2 minutes, the electronic device 100 is far away from the human body, such as when the electronic device 100 is placed on a stand for live video streaming or video calls. In this case, the electronic device 100 is far away from the human body, the target distance d between the user and the electronic device 100 is greater than the first distance threshold d1, and the radiation to the human body is negligible. Therefore, the transmission power P is not integrated during this period. For another example, when the user is holding the electronic device 100, if the target distance d between the top antenna 1 of the electronic device 100 and the human hand is greater than the first distance threshold d1, the radiation to the human hand is negligible. Therefore, the transmission power P is not integrated during this period. In the second time period T2 = 4 minutes, the transmission power P of the electronic device 100 is integrated only when the target distance d between the electronic device 100 and the user is less than or equal to the first distance threshold d1. For example, starting from the third minute, it is detected that the electronic device 100 is close to the human body. At this time, the electronic device 100 is relatively close to the human body, and the target distance d between the electronic device 100 and the user is less than or equal to the first distance threshold d1. The radiation to the human body is not negligible. Therefore, the transmission power P is integrated during this period. For another example, when the user is holding the electronic device 100, when the target distance d between the side antenna 2 of the electronic device 100 and the human hand is less than or equal to the first distance threshold d1, the radiation to the human hand is not negligible. Therefore, the transmission power P is integrated during this period.

[0146] For example, as shown in the attached Figure 7 As shown, when calculating the transmit energy E, essentially only the transmit power P over the last four minutes is integrated. Compared to the six-minute integration of transmit power P in related art, the four-minute transmit energy E is much smaller than the six-minute transmit energy E. Therefore, there is a certain margin relative to the transmit energy threshold Et. Therefore, within the six-minute period, the transmit power P can be appropriately increased based on this margin to meet the user's needs for intermittent high-power gaming, voice calls, and video calls, thereby improving the user experience. Furthermore, it can ensure that the radiation exposure to the human body is within the safety guidelines within the six-minute period.

[0147] The transmit power control method and electronic device provided in the embodiments of the present application are capable of, based on the target distance between the electronic device and the user, not integrating the transmit power of the electronic device during a first time period when the target distance between the electronic device and the user is greater than a first distance threshold. The transmit power of the electronic device is then integrated only during a second time period when the target distance between the electronic device and the user is less than or equal to the first distance threshold. Furthermore, during a second time period when the target distance between the electronic device and the user is greater than the second distance threshold and less than or equal to the first distance threshold, the second power within the second time period is integrated to obtain the first transmit energy of the electronic device within the preset time period. During a second time period when the target distance between the electronic device and the user is less than the second distance threshold, the actual transmit power within the second time period is integrated to obtain the second transmit energy of the electronic device within the preset time period. Furthermore, when the transmit energy is greater than the transmit energy threshold, the transmit power of the electronic device is reduced. Therefore, the transmit power with no or low radiation to the human body can be identified based on the target distance between the electronic device and the user. Integration is not performed or integration is proportionally performed during the time period corresponding to this transmit power. The total transmit power within the corresponding SAR time period is increased while ensuring safety standards, thereby improving the user experience.

[0148] It is understandable that in order to implement the above functions, the electronic device includes hardware and / or software modules corresponding to the execution of each function. In combination with the algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application in combination with the embodiments, but such implementation should not be considered to be beyond the scope of this application.

[0149] In this embodiment, the electronic device can be divided into functional modules according to the above-mentioned method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into a single processing module. The above-mentioned integrated modules can be implemented in the form of hardware. It should be noted that the module division in this embodiment is illustrative and is only a logical functional division. In actual implementation, other division methods may be used.

[0150] An embodiment of the present application further provides a computer-readable storage medium, in which computer program code is stored. When the processor executes the computer program code, the electronic device executes the relevant method steps in the above method embodiment.

[0151] An embodiment of the present application further provides a computer program product, which, when executed on a computer, enables the computer to execute the relevant method steps in the above method embodiment.

[0152] Among them, the electronic device, computer storage medium or computer program product provided in this application is used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, and will not be repeated here.

[0153] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0154] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the above modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0155] The units described above as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0156] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The functions of the aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0157] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application, or the part that makes the contribution, or all or part of the technical solution can be embodied in the form of a software product. The software product is stored in a storage medium and includes several instructions for enabling a device (which can be a single-chip microcomputer, chip, etc.) or a processor to execute all or part of the steps of the above-mentioned method of each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program code.

[0158] The above content is only a specific embodiment of this application, but the scope of protection of this application is not limited to this. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A transmission power control method, characterized in that: Applied to electronic equipment, the method includes: Obtaining a target distance between the electronic device and a user; In a first time period, if the target distance is greater than a first distance threshold, the transmit power of the electronic device is not integrated; In a second time period, if the target distance is less than or equal to the first distance threshold, performing power integration on the transmit power of the electronic device in the second time period to obtain transmit energy of the electronic device in a preset time period; the preset time period includes the first time period and the second time period; When the transmission energy is greater than a transmission energy threshold, reducing the transmission power of the electronic device; If the target distance is less than or equal to the first distance threshold, performing power integration on the transmit power of the electronic device in the second time period to obtain the transmit energy of the electronic device in the preset time period includes: When the target distance is greater than a second distance threshold, power integration is performed on the second power within the second time period to obtain a first transmission energy of the electronic device within the preset time period; the second distance threshold is less than the first distance threshold; the second power is less than the first power; the first power is the transmission power when the distance between the electronic device and the user is the second distance threshold, and the second power is the transmission power when the distance between the electronic device and the user is the target distance; When the target distance is less than or equal to the second distance threshold, power integration is performed on the actual transmission power in the second time period to obtain a second transmission energy of the electronic device in the preset time period.

2. The transmission power control method according to claim 1, wherein: The second power is obtained based on the first power and a radiation coefficient; the radiation coefficient is greater than or equal to 0 and less than 1.

3. The transmission power control method according to claim 2, wherein: The second power is obtained based on the first power and the radiation coefficient, and satisfies the following formula: P2=P1+10log(α); Wherein, P2 represents the second power, P1 represents the first power, and α represents the radiation coefficient.

4. The transmission power control method according to claim 3, wherein: The radiation coefficient is obtained based on a first SAR and a second SAR; the first SAR is the SAR corresponding to transmission at the first power when the distance between the electronic device and the user is the second distance threshold; the second SAR is the SAR corresponding to transmission at the first power when the distance between the electronic device and the user is the target distance.

5. The transmission power control method according to claim 4, wherein: The radiation coefficient is a ratio of the second SAR to the first SAR.

6. The transmission power control method according to claim 4 or 5, characterized in that: The first SAR is an average SAR safety limit of the electronic device in the preset time period, and the first power is an average transmission power limit corresponding to the average SAR safety limit.

7. An electronic device, characterized in that: The electronic device includes a memory and one or more processors, wherein the memory is coupled to the processor; wherein computer program code is stored in the memory, and the computer program code includes computer instructions, and when the computer instructions are executed by the processor, the electronic device executes the transmission power control method according to any one of claims 1 to 6.

8. A computer-readable storage medium, characterized in that The method comprises computer instructions, which, when executed on the electronic device, enable the electronic device to execute the transmission power control method according to any one of claims 1 to 6.

9. A computer program product, characterized in that When the computer program product is run on a computer, the computer is enabled to execute the transmission power control method according to any one of claims 1 to 6.

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