Transmitting power control method and electronic equipment

Abstract

The invention discloses a transmitting power control method and electronic equipment, relates to the field of radio frequency, and can improve the total transmitting power in a corresponding SAR (Synthetic Aperture Radar) time period on the basis of guaranteeing the safety standard, thereby improving the user experience. The transmitting power control method is applied to the electronic equipment, and comprises the following steps: acquiring a target distance between the electronic equipment and a user; in the first time period, if the target distance is greater than a first distance threshold value, not integrating the transmitting power of the electronic equipment; in the second time period, if the target distance is smaller than or equal to the first distance threshold value, power integration is carried out on the transmitting power of the electronic equipment in the second time period, and the transmitting energy of the electronic equipment in the preset time period is obtained; the preset time period comprises a first time period and a second time period; and when the emission energy is greater than the emission energy threshold, reducing the emission power of the electronic equipment.

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] At present, there are many safety standards that set limits on SAR so that the electromagnetic radiation generated by electronic devices to the human body is within the safety limit. Although the standards of different countries are slightly different, these safety standards all set limits on the average SAR of human exposed tissues in any continuous period of time, that is, they limit the electromagnetic energy generated by the transmission power of electronic devices in any continuous period of time.

[0004] However, in actual applications, in any continuous time period, the electromagnetic energy generated by the transmission power of the target at a close distance may have a greater radiation to the human body, and the electromagnetic energy generated by the transmission power of the target at a long distance may have no radiation or less radiation to the human body, but these transmission powers are all subject to restrictions. Therefore, it is impossible to identify the magnitude of the electromagnetic energy generated by the current transmission power that radiates to the human body, resulting in the power integration of all actual transmission powers in any continuous time period, reducing the total transmission power in the SAR time period, thereby affecting the user experience. Summary of the invention

[0005] The embodiments of the present application provide a transmission power control method and an electronic device, which can identify the transmission power with no radiation or low radiation to the human body through the target distance between the electronic device and the user, and do not integrate or integrate proportionally for the time period corresponding to the transmission power, thereby increasing the total transmission power in the corresponding SAR time period while ensuring the safety standards, thereby improving the user experience.

[0006] To achieve the purpose, the embodiments of the present application adopt the following technical solutions: 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, the transmission power of the electronic device is not integrated; 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, the transmission power of the electronic device within the second time period is integrated 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; when the transmission energy is greater than the transmission energy threshold, the transmission power of the electronic device is reduced.

[0007] In the above-mentioned transmission power control method, 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 first time period is not integrated. In the second time period when the target distance between the electronic device and the user is less than or equal to the first distance threshold, the transmission power of the electronic device in the second time period is integrated, and when the transmission energy is greater than the transmission energy threshold, the transmission power of the electronic device is reduced. The transmission power that has no radiation or has low radiation to the human body can be identified through the target distance between the electronic device and the user, and the time period corresponding to the transmission power is not integrated or is integrated proportionally, and the total transmission power in the corresponding SAR time period is increased on the basis of ensuring safety standards, thereby improving user experience.

[0008] 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 a second time period is power integrated to obtain the transmission energy of the electronic device in a 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.

[0009] 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.

[0010] 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.

[0011] 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 between the electronic device and the user is the second distance threshold can be obtained based on the first power and the radiation coefficient.

[0012] 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.

[0013] In this implementation, the second power is obtained according to the formula P2=P1+10log(a), and 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 between the electronic device and 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.

[0014] In an implementation manner 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 first power emitted by the electronic device when the distance between the electronic device and the user is a second distance threshold; the second SAR is the SAR corresponding to the first power emitted by the electronic device when the distance between the electronic device and the user is a target distance.

[0015] 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 coefficient of the two when transmitted at the first power can be obtained subsequently, so that the second power can be accurately obtained.

[0016] In an implementation manner of the first aspect, the radiation coefficient is a ratio of the second SAR to the first SAR.

[0017] In this implementation, the radiation coefficient is obtained based on the ratio of the second SAR to the first SAR, so as to accurately obtain the second power subsequently.

[0018] 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 transmission power limit corresponding to the average SAR safety limit.

[0019] 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 transmission power limit corresponding to the average SAR safety limit, which can ensure that the transmission energy is within the safe energy range.

[0020] In an implementation method of the first aspect, if the target distance 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 a 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.

[0021] 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 target distance between the current electronic device and the user is not safe 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 in the second time period to obtain the second transmission energy of the electronic device in the preset time period.

[0022] 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 a transmission power control method as in the first aspect and any one of its embodiments.

[0023] In a third aspect, a computer-readable storage medium is provided, comprising computer instructions, which, when executed on an electronic device, enable the electronic device to execute a transmission power control method as in the first aspect and any one of its embodiments.

[0024] 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 one of its embodiments.

[0025] 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

[0026] Figure 1 A schematic diagram of a possible hardware structure of an electronic device provided in an embodiment of the present application; Figure 2 A schematic diagram of a possible software structure of an electronic device provided in an embodiment of the present application; Figure 3 A schematic diagram of a transmission power integration of a time averaging algorithm provided for related technologies; Figure 4 A flow chart of a transmission power control method provided in an embodiment of the present application; Figure 5 A schematic diagram of a target distance between a user and a device provided in an embodiment of the present application; Figure 6 A flow chart of a transmission power integration method in a transmission power control method provided in an embodiment of the present application; Figure 7 A schematic diagram of a transmission power integration of a time averaging algorithm provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The technical solution in the embodiment of the present application will be described below in conjunction with the drawings in the embodiment of the present application. Among them, in the description of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the present application is only a description of the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. And, in the description of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. 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, the words "first", "second" and the like are used to distinguish the same items or similar items with substantially the same functions and effects. It can be understood by those skilled in the art that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not necessarily limit the difference. At the same time, in the embodiments of the present application, the words "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 related concepts in a specific way for easy understanding. The terms "coupling" and "connection" involved in the embodiments of the present application should be understood in a broad sense, for example, it can refer to a physical direct connection, or it can refer to an indirect connection achieved by an electronic device, such as a connection achieved by a resistor, an inductor, a capacitor or other electronic devices.

[0028] The transmit power integral represents the total transmit energy of the device during a specific period of time.

[0029] Specific absorption rate (SAR) is a physical quantity that measures the rate at which electromagnetic field energy is absorbed by biological tissue. It is usually used to evaluate the impact of electromagnetic radiation (such as mobile phones, microwave equipment, etc.) on human health. SAR is the electromagnetic power absorbed per unit mass of biological tissue, measured in W / kg.

[0030] The time averaging algorithm is used to calculate the time average value of SAR, which is to average the SAR value within a specific time period.

[0031] The International Commission on Non-Ionizing Radiation Protection (ICNIRP) is an international authority responsible for developing 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: 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.

[0032] 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.

[0033] This limit applies to public and occupational exposure and is intended to prevent adverse effects of electromagnetic radiation on human health. In practical applications, electronic devices such as mobile phones are usually tested for SAR when they are close to the human body (0-5mm). For other devices (such as base stations), the electromagnetic field strength will be significantly reduced at a longer distance, so SAR usually does not exceed the limit.

[0034] 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 of 10 grams of tissue).

[0035] The Federal Communications Commission (FCC) of the United States sets standards to ensure the safety of wireless devices. The standards stipulate: SAR limits mainly for the head and torso (1.6W / kg, averaged over 1 gram of tissue), and do not specify SAR limits for the limbs separately, but usually follow the guidance of IEEE or ICNIRP.

[0036] The embodiment of the present application provides an electronic device, which is an electronic device with a display function. The electronic device can be mobile or fixed. The electronic device can be deployed on land (for example, indoors or outdoors, handheld or vehicle-mounted, etc.), on the water (for example, ships, etc.), or in the air (for example, airplanes, balloons, and satellites, etc.). The electronic device can be called user equipment (UE), access terminal, terminal unit, subscriber unit, terminal station, mobile station (MS), mobile station, terminal agent or terminal device, etc. For example, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a smart bracelet, a smart screen, a smart watch, a virtual reality (VR) device, an augmented reality (AR) device, a terminal in industrial control, a terminal in self-driving, a terminal in remote medical care, a terminal in smart grid, a terminal in transportation safety, a terminal in smart city, a 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.

[0037] Take the mobile phone as an example, Figure 1 A possible structure of the electronic device 100 is shown. 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, an antenna 1, an 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 screen 294, and a subscriber identification module (SIM) card interface 295. Optionally, in some embodiments, an audio digital signal processor (ADSP) 243 is also included.

[0038] It is to be understood that the structure illustrated in the embodiment of the present application does 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 in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0039] The processor 210 may include one or more processing units, for example, the processor 210 may be 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 processor (GPU), an image signal processor (ISP), a controller, a video codec, and a neural-network processing unit (NPU). Among them, 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 in a system on chip (SoC). Alternatively, the processor 210 may be integrated in 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.

[0040] The processor 210 may also be provided with a memory for storing computer instructions and data. In some embodiments, the memory in the processor 210 is a cache memory. The memory may store computer instructions or data that the processor 210 has just used or circulated. If the processor 210 needs to use the computer instructions or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processor 210, and thus improves the efficiency of the system.

[0041] In some embodiments, the processor 210 may include one or more interfaces. The interface may include 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, etc.

[0042] In some embodiments, the processor may be a processor or a 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 devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the present disclosure. The above-mentioned 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.

[0043] ADSP 243 can be coupled with audio module 270 and sensor module 280, and can be used to process audio signals and sensor data. When processor 210 is in sleep mode, ADSP 243 can still keep working, thereby reducing power consumption of electronic device 100.

[0044] It is understandable that the interface connection relationship between the modules illustrated in the embodiment of the present application is only a schematic 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 in the embodiment, or a combination of multiple interface connection methods.

[0045] 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 a data storage function, such as storing music, video and other files in the external memory card.

[0046] The internal memory 221 may be used to store computer executable program codes, which include computer instructions. The processor 210 executes various functional applications and data processing of the electronic device 100 by running the computer instructions stored in the internal memory 221. In addition, the internal memory 221 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc.

[0047] 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.

[0048] 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. Among them, 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 but 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.

[0049] The electronic device 100 can implement audio functions such as music playing and recording through the audio module 270, the speaker 270A, the receiver 270B, the microphone 270C, the headphone interface 270D and the application processor.

[0050] The button 290 includes a power button, a volume button, etc. The button 290 may be a mechanical button. It may also be a touch button. The electronic device 100 may receive a button input and generate a key signal input related to the user settings and function control of the electronic device 100. The motor 291 may generate a vibration prompt. The motor 291 may be used for an incoming call vibration prompt or for touch vibration feedback. The indicator 292 may be an indicator light, which may be used to indicate the charging status, the change in power, or may be used to indicate messages, missed calls, notifications, etc. The SIM card interface 295 is used to connect a SIM card. The SIM card may be inserted into or removed from the SIM card interface 295 to achieve contact and separation with the electronic device 100. The electronic device 100 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 295 may support a Nano SIM card, a Micro SIM card, a SIM card, etc. 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 .

[0051] The electronic device 100 can realize the shooting function through the ISP, the camera 293, the video codec, the GPU, the display screen 294, and the application processor. The ISP is used to process the data fed back by the camera 293. In some embodiments, the ISP can be set in the camera 293. The camera 293 is used to capture a static image or a video. In some embodiments, the electronic device 100 may include 1 or N cameras 293, where N is a positive integer greater than 1.

[0052] The electronic device 100 can realize the display function through a GPU, a display screen 294, and an application processor. The GPU is a microprocessor for image processing, which connects the display screen 294 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 210 may include one or more GPUs, which execute computer instructions to generate or change display information.

[0053] The power management module 240 is used to receive charging input from a charger. The charger may be a wireless charger, such as a wireless charging base, other electronic devices 100 with reverse wireless charging function, etc. The power management module 240 may receive wireless charging input through a wireless charging coil 242 of the electronic device. The charger may also be a wired charger, for example, the power management module 240 may receive charging input from a wired charger through the USB interface 230. The power management module 240 is also called a charging chip.

[0054] The power management module 240 is used to connect to the battery 241. The power management module 240 receives input from the battery 241 and supplies power to the processor 210, the internal memory 221, the display screen 294, the camera 293, and the wireless communication module 260. The power management module 240 can also be used to monitor parameters such as the capacity of the battery 241, the number of cycles of the battery 241, and the health status (leakage, impedance) of the battery 241. In some other embodiments, the power management module 240 can also be set in the processor 210.

[0055] 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.

[0056] 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.

[0057] The mobile communication module 250 can provide solutions for wireless communications including 2G / 3G / 4G / 5G, etc., applied to the electronic device 100. The wireless communication module 260 can provide solutions for wireless communications including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR), etc., applied to the electronic device 100.

[0058] 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 abstract layer (HAL) and a kernel layer.

[0059] The kernel layer is the layer between hardware and software. Exemplarily, the kernel layer includes display driver, camera driver, RF driver, etc. The display driver is used to drive the display screen to display images or receive user touch operations, the camera driver is used to drive the camera to collect image data, and the RF driver is used to drive the RF.

[0060] 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 .

[0061] The HAL layer is used to abstract the hardware. The HAL layer hides the hardware interface details of a specific platform and provides a virtual hardware platform for the operating system, which is hardware-independent. For example, the HAL layer includes a display module, a camera module, a radio frequency module, etc. The display module is used for a virtual display screen, the camera module is used for a virtual camera, and the radio frequency module is used for a virtual communication module.

[0062] The system runtime layer includes C / C++ program libraries and runtime libraries. Many core components and services of the Android operating system are built from native code and need to be written in C and C++ as C / C++ program libraries. When an application is installed for the first time, it will be pre-compiled into a runtime library in the form of machine code. This process is called pre-compilation. In this way, when the application is started and executed, it can be accelerated by running the machine code.

[0063] The framework layer provides application programming interfaces (APIs) and programming frameworks for applications in the application layer. The framework layer includes some predefined implementation methods. For example, the framework layer includes window managers, content providers, view systems, notification managers, etc.

[0064] The application layer can include a series of application packages, such as photo, camera and other applications (application, app).

[0065] In related technologies, with the development of communication and electronic technologies, 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. SAR represents the electromagnetic energy absorbed by human tissue per unit mass per unit time, which can be expressed by the following formula (1): Formula (1); Among them, 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 (volt / meter, V / m), which indicates the strength of the electromagnetic field; ρ is the tissue density (kilograms / cubic meter, kg / m³).

[0066] At present, there are many safety standards that set limits on SAR, such as ICNIRP, IEEE C95.1 and FCC, so that the electromagnetic radiation generated by the electronic device 100 to the human body is within the safety limit. Although the safety standards of various countries are slightly different, these safety standards all set limits on the average SAR of the exposed tissue of the human body within any continuous 6 minutes. In the safety standards, setting limits on the average SAR of the exposed tissue of the human body within any continuous 6 minutes is actually setting limits on the SAR energy within any continuous 6 minutes. Therefore, the average SAR within any continuous 6 minutes can be expressed by the following formula (2): Formula (2); 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.

[0067] 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 from t1 to t2, in joules (J), and can be expressed by the following formula (3): Transmit power integral = Formula (3); Where, P is the instantaneous transmission power, P avg is the average transmission 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.

[0068] The relationship between the electric field strength |E| and the transmission power P can be expressed by the following formula (4): Formula (4); Wherein, k is a coefficient, d is a target distance between a measurement point and an antenna. Generally, the measurement point is a location where a user is located, and an antenna is included in the electronic device 100, such as antenna 1 and antenna 2. Since the location where the antenna is located is the location where the electronic device 100 is located, the distance between the measurement point and the antenna is the target distance between the user and the electronic device 100 (unit: m).

[0069] According to formula (2), formula (3) and formula (4), by substituting formula (4) and formula (3) into formula (2), we can get the following formula (5): Formula (5); 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).

[0070] 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 within any continuous 6 minutes is equal to the average transmission power P of the electronic device 100. avg The 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 average SAR, the smaller the average transmission power P of the electronic device 100. avg Under certain circumstances, the larger the target distance d between the user and the electronic device 100, the smaller the average SAR of the exposed tissue of the human body in any continuous 6 minutes, and the smaller the target distance d between the user and the electronic device 100, the larger the average SAR of the exposed tissue of the human body in any continuous 6 minutes.

[0071] 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 uncertain, and there are high-power transmission powers P (for example, 23dbm) and low-power transmission powers P (for example, 17dbm). Refer to the average transmission power limit P avg_t , for any continuous 6 minutes, the average transmission power P of the electronic device 100 avg Limit the value to 20dbm. See 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 value is below 20dbm, the transmission power P is below 20dbm within 6 minutes.

[0072] However, in actual applications, within any continuous 6 minutes, the electromagnetic energy generated by the transmission power P with a close target distance may have a large radiation to the human body, and the electromagnetic energy generated by the transmission power P with a long target distance may have no radiation or little radiation to the human body, but these transmission powers P are all subject to restrictions. Therefore, it is impossible to identify the electromagnetic energy generated by the current transmission power P and the radiation to the human body, resulting in the reduction of all actual transmission powers P, thus affecting the user experience. For example, it affects the experience of games, voice calls, and videos with intermittent high power requirements.

[0073] To this end, a transmission power control method is provided in an embodiment of the present application, and the electronic device 100 can, according to the target distance d between the electronic device 100 and the user, not integrate the transmission power P of the electronic device 100 in the 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 transmission power P of the electronic device 100 is integrated only in the 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, and when the transmission energy E is greater than the transmission energy threshold Et, the transmission power P of the electronic device 100 is reduced. The transmission power control method can identify the transmission power P that has no radiation or less radiation to the human body through the target distance d between the electronic device 100 and the user, not integrate or integrate proportionally for the time period corresponding to the transmission power P, and increase the total transmission power in the corresponding SAR time period on the basis of ensuring the safety standard, thereby improving the user experience.

[0074] 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 transmission power control method provided in an embodiment of the present application may include steps S401-S403: Step S401: the electronic device 100 obtains a target distance d between itself and the user.

[0075] In a 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.

[0076] In the embodiment of the present application, when the target distance d between the electronic device 100 and the user is obtained, the target distance d between the electronic device 100 and a body part of the user is obtained.

[0077] In a possible implementation, the user's body part may be the head, or may be the trunk or limbs. The embodiment of the present application does not limit the characteristics of the user's body part.

[0078] In a 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.

[0079] 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 larger the target distance d between the electronic device 100 and the user, the higher the average SAR (i.e., SAR) of the exposed tissue of the human body within any continuous 6 minutes. avg ) is smaller, that is, the radiation is smaller. The smaller the target distance d between the electronic device 100 and the user, the average SAR (i.e. SAR) of the exposed tissue of the human body within any continuous 6 minutes is avg ), that is, the greater the radiation. If the average SAR is within a certain range, that is, the average SAR is less than or equal to the average SAR threshold, it basically has no effect on the human body and can be considered to have no radiation to the human body. 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 cannot be ignored and it can be considered that there is radiation to the human body. Therefore, it is necessary to obtain the target distance d between the electronic device 100 and the user to execute step S402 to determine whether the electromagnetic energy generated by the transmission power P radiates to the human body.

[0080] 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.

[0081] The preset time period T is the time period during which the electronic device 100 performs power integration on the transmission power P, which can be set according to actual needs. For example, it can be obtained by counting multiple time periods during which the transmission power P is integrated, such as counting the mean, median, or minimum value of multiple time periods during which the transmission power P is integrated; it can also be set according to empirical values, such as 6 minutes or 30 minutes.

[0082] The first distance threshold d1 is: the distance at which the electromagnetic energy generated by the electronic device 100 with the transmission power P in any continuous preset time period T has no radiation to the human body, and can be set according to actual needs. For example, it can be obtained by counting the multiple distances at which the electromagnetic energy generated by the electronic device 100 with the transmission power P in any continuous preset time period T has no radiation to the human body, such as counting the mean, median or minimum value of the multiple distances at which the electromagnetic energy generated by the electronic device 100 with the transmission power P in any continuous preset time period T has no radiation to the human body; it can also be set according to an empirical value, such as 20mm or 25mm.

[0083] In the embodiment of the present application, the preset time period T is any continuous time period in different standards of the average SAR limit, such as 6 minutes or 30 minutes. The first distance threshold d1 is the distance at which the electromagnetic energy generated by the transmitting power P in any continuous time period in different standards of the average SAR limit has no radiation to the human body, such as 20 mm or 25 mm.

[0084] In the embodiment of the present application, the preset time period T is 6 minutes, and the first distance threshold d1 is the distance at which the electromagnetic energy generated by the transmission power P corresponding to 6 minutes has no radiation to the human body, that is, 20 mm or 25 mm. In the following embodiments of the present application, taking the preset time period T of 6 minutes as an example, a transmission power control method provided in the embodiment of the present application is specifically described.

[0085] 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 as the dividing point of whether there is radiation to the human body. 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 basically no effect on the human body, and it can be considered that there is no radiation to the human body. Only within the range of the first distance threshold d1, there is an effect on the human body, and it can be considered that there is radiation to the human body.

[0086] The electronic device 100 integrates the transmission power P based on the target distance d between the electronic device 100 and the user and obtains the transmission energy E within the preset time period T in order to distinguish whether the electromagnetic energy generated by the current transmission power P is radiated to the human body. 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: Step S4021: When the electronic device 100 obtains a first SAR 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.

[0087] Among them, the second distance threshold d2 is: the distance at which the electromagnetic energy generated by the transmission power P of the electronic device 100 in any continuous preset time period T is relatively safe for the radiation to the human body, and can be set according to actual needs. For example, it can be obtained by counting the multiple distances at which the electromagnetic energy generated by the transmission power P of the electronic device 100 in any continuous preset time period T is relatively safe for the radiation to the human body, such as the mean or median or minimum value of the multiple distances at which the electromagnetic energy generated by the transmission power P of the electronic device 100 in any continuous preset time period T is relatively safe for the radiation to the human body; it can also be set according to an empirical value, such as 5mm.

[0088] 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 radiation distance to the human body is relatively safe, that is, 5mm. Figure 5 As shown, the second distance threshold d2 can be considered as a relatively safe demarcation point for human body radiation. Compared with the first distance threshold d1, the electronic device 100 is closer to the human body, and the average SAR generated by the electronic device 100 is larger than the average SAR generated at the first distance threshold d1. Outside the range of the second distance threshold d2, it can be considered that the radiation to the human body is relatively safe. Within the range of the second distance threshold d2, it can be considered that the radiation to the human body is unsafe.

[0089] 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, it corresponds to a relatively safe distance for human radiation. Therefore, within the second distance threshold d2, it is necessary to meet the average SAR in any continuous preset time period T, which should 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.

[0090] 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.

[0091] The first time period T1 is a time period in the preset time period T. In 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, in order to determine whether the electromagnetic energy generated by the transmission power P of the current target distance d between the electronic device 100 and the user has radiation to the human body in the first time period T1. In the case where the target distance d between the electronic device 100 and the user is greater than the first distance threshold d1, it indicates that the electromagnetic energy generated by the transmission power P of the current target distance d between the electronic device 100 and the user has no radiation to the human body at all, and the electromagnetic energy generated by the transmission power P can be ignored, and step S4023 is executed. In the case where the target distance d between the electronic device 100 and the user is less than or equal to the first distance threshold d1, it indicates that the electromagnetic energy generated by the transmission power P of 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.

[0092] Step S4023: The electronic device 100 does not integrate the transmission power P.

[0093] When the target distance d between the electronic device 100 and the user is greater than the first distance threshold d1, since the electromagnetic energy generated by the transmission power P at the current target distance d has no radiation to the human body, 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.

[0094] 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.

[0095] Among them, the second time period T2 is also a time period in the preset time period T. When the target distance d between the electronic device 100 and the user is less than or equal to the first distance threshold d1, it indicates that the electromagnetic energy generated by the transmission power P of the current target distance d has begun to radiate the human body, and the electromagnetic energy generated by the transmission power P needs to be considered. Further, in 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, in order to determine whether the current target distance d is within the safe distance range, and whether the electromagnetic energy generated by the transmission power P of the current target distance d is relatively safe for the radiation of the human body. When the target distance d between the electronic device 100 and the user is greater than the second distance threshold d2, it indicates that the electromagnetic energy generated by the transmission power P of the current target distance d is relatively safe for the radiation of the human body, and the electromagnetic energy generated by the actual transmission power P does not need to be considered, and step S4025 is executed. When 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 of the current target distance d is not safe for the radiation of the human body, and the electromagnetic energy generated by the actual transmission power P needs to be considered, and step S4028 is executed.

[0096] Step S4025: The electronic device 100 obtains a second SAR at the first power P1 when the target distance d between the electronic device 100 and the user is d based on the second distance threshold d2, the first SAR, and the target distance d between the electronic device 100 and the user.

[0097] 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 of the current target distance d between the electronic device 100 and the user is relatively safe for human radiation, 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.

[0098] 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): First SAR=k1*P1 / d2 2Formula (6); 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 when the target distance between the electronic device 100 and the user is d, the corresponding second SAR is transmitted at the first power P1, and the following formula (7) can be obtained: Second SAR=k1*P1 / d 2 Formula (7); Combining formula (6) and formula (7), we can get the following formula (8): Second SAR = first SAR * d2 2 / d 2 Formula (8); Therefore, the electronic device 100 can obtain the second SAR when transmitting with 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.

[0099] Step S4026: The electronic device 100 obtains a second power P2 at a target distance d from the user based on the first power P1, the first SAR, and the second SAR.

[0100] After the target distance d between the electronic device 100 and the user is obtained, the corresponding second SAR is transmitted with the first power P1, and the second power P2 of the target distance d between the user can be obtained based on the first power P1, the first SAR and the second SAR. The second power P2 is essentially the corresponding equivalent transmission power P determined by transmitting with the first power P1 at the second distance threshold d2 between the user and 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.

[0101] 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 the following formula (9) may be used: P2=P1+10log(α) formula (9); The α in formula (9) can be expressed as follows: α = second SAR / first SAR formula (10); Substituting formula (8) into formula (9) and formula (10), we can obtain the following formula (11): P2=P1+10log(d2 2 / d 2 ) Formula (11); Where α=d22 / d 2 .

[0102] Since the target distance d between the electronic device 100 and the user> the second distance threshold d2 between the electronic device 100 and the user, 0<α<1, and the second power P2<the 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 transmission power P determined by transmitting with 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, that is, the second power P2.

[0103] 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.

[0104] 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 when 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, determine 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 any distance in the first distance threshold d1, 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 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.

[0105] The transmission power control method described in the above steps S4025-S4026 is based on transmitting with the first power P1 at the second distance threshold d2, and proportionally converting to the corresponding equivalent transmission power P, that is, the second power P2, when the target distance d is greater than the second distance threshold d2 and less than or equal to the first distance threshold d1. In step S4027, the corresponding equivalent transmission power P in the second time period, that is, the second power P2, is power integrated, which is actually proportionally integrated for the time period corresponding to the transmission power P. Therefore, the total transmission power in the corresponding SAR time period can be increased on the basis of ensuring the safety standard, thereby improving the user experience.

[0106] 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.

[0107] When 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 not safe for human radiation, and it is necessary to consider the electromagnetic energy generated by the actual transmission power P. Therefore, 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.

[0108] In the transmission power control method described in the above steps S4021-S4028, based on the target distance d between the electronic device 100 and the user and the first distance threshold d1, the specific process of integrating the transmission power P is that in the 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 transmission power P of the electronic device 100 is not integrated. In the 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 transmission power P of the electronic device 100 is integrated. And in the 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 in the second time period T2 is integrated to obtain the first transmission energy E1 of the electronic device 100 in the preset time period T. In the 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 transmission power P in the second time period T2 is integrated to obtain the second transmission energy E2 of the electronic device 100 in the preset time period T. It can distinguish whether the electromagnetic energy generated by the current transmission power P is radiant to the human body, and can ensure that the electromagnetic energy generated by the transmission power P is within the safe transmission energy range.

[0109] Step S403: When the transmission energy E is greater than the transmission energy threshold Et, the electronic device 100 reduces the transmission power P.

[0110] 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 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.

[0111] 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.

[0112] In the transmission power control method described in the above steps S401-S403, the electronic device 100 can, according to the target distance d between the user and the electronic device 100, not integrate the transmission power P of the electronic device 100 in the 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 transmission power P of the electronic device 100 is integrated only in the 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. And when the transmission energy E is greater than the transmission energy threshold Et, the transmission power P of the electronic device 100 is reduced. Therefore, the transmission power P with no radiation or less radiation to the human body can be identified through the target distance d between the electronic device 100 and the user, and the time period corresponding to the transmission power P is not integrated or integrated in proportion, and the total transmission power in the corresponding SAR time period is increased on the basis of ensuring the safety standard, thereby improving the user experience.

[0113] In the embodiments of the present application, for example, as shown in the attached Figure 7As shown, within the 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, the transmission power P of the electronic device 100 is not integrated. For example, within the first 2 minutes, the electronic device 100 is far away from the human body, for example, the electronic device 100 is placed on a bracket for live video broadcast or video call. At this time, the electronic device 100 is far away from the human body, and 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 can be ignored. Therefore, the transmission power P is not integrated during this period. For another example, when the user holds the electronic device 100, when 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 can be ignored, so 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 3rd minute, it is detected that the electronic device 100 is close to the human body. At this time, the electronic device 100 is 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 cannot be ignored. Therefore, the transmission power P is integrated during this period. For another example, when the user holds 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 cannot be ignored. Therefore, the transmission power P is integrated during this period.

[0114] For example, as shown in the attached Figure 7 As shown in the figure, when the transmission energy E is obtained, in essence, only the transmission power P of the last 4 minutes is integrated. Compared with the 6-minute transmission power P integration in the related art, the 4-minute transmission energy E is much smaller than the 6-minute transmission energy E. Therefore, there is a certain margin relative to the transmission energy threshold Et. Therefore, within 6 minutes, the transmission power P can be appropriately increased based on the margin to meet the user's intermittent high-power gaming, voice calls and videos, thereby improving the user experience. And it can ensure that within 6 minutes, the radiation to the human body is within the safety guidelines.

[0115] The transmission power control method and electronic device provided in the embodiment of the present application can be based on the target distance between the electronic device and the user. 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 is not integrated. The transmission power of the electronic device is integrated only in the second time period when the target distance between the electronic device and the user is less than or equal to the first distance threshold. And in the 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 in the second time period is integrated to obtain the first transmission energy of the electronic device in the preset time period. In the second time period when the target distance between the electronic device and the user is less than the second distance threshold, the actual transmission power in the second time period is integrated to obtain the second transmission energy of the electronic device in the preset time period. And when the transmission energy is greater than the transmission energy threshold, the transmission power of the electronic device is reduced. Therefore, the transmission power that has no radiation or less radiation to the human body can be identified by the target distance between the electronic device and the user, and the time period corresponding to the transmission power is not integrated or integrated proportionally, and the total transmission power in the corresponding SAR time period is increased on the basis of ensuring the safety standard, thereby improving the user experience.

[0116] 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 the present application.

[0117] In this embodiment, the electronic device can be divided into functional modules according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware. It should be noted that the division of modules in this embodiment is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0118] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program code is stored. When the processor executes the computer program code, the electronic device executes the relevant method steps in the method embodiment.

[0119] The embodiment of the present application also provides a computer program product. When the computer program product is run on a computer, it enables the computer to execute the relevant method steps in the above method embodiment.

[0120] 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.

[0121] 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.

[0122] In the several embodiments provided in the present 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 only schematic. For example, the division of the above modules or units is only a logical function division. There may be other division methods in actual implementation, 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.

[0123] The units described above as separate components may or may not be physically separated, 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 present embodiment.

[0124] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The functions of the above-mentioned integrated units may be implemented in the form of hardware or in the form of software functional units.

[0125] 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 is essentially 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, which is stored in a storage medium, including a number of instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to execute all or part of the steps of the above-mentioned methods 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 and other media that can store program codes.

[0126] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A transmission power control method, characterized in that: Applied to electronic equipment, the method comprises: Acquiring 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 transmission 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, power integration is performed on the transmission power of the electronic device in the second time period to obtain the transmission 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, the transmission power of the electronic device is reduced.

2. The transmission power control method according to claim 1, characterized in that: If the target distance is less than or equal to the first distance threshold, power integration is performed on the transmission power of the electronic device in the second time period to obtain the transmission energy of the electronic device in the preset time period, including: When the target distance is greater than the second distance threshold, the second power within the second time period is integrated to obtain the 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.

3. The transmission power control method according to claim 2, characterized in that: 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.

4. The transmission power control method according to claim 3, characterized in that: 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.

5. The transmission power control method according to claim 4, characterized in that: The radiation coefficient is obtained based on the first SAR and the second SAR; the first SAR is the SAR corresponding to the first power transmitted when the distance between the electronic device and the user is the second distance threshold; the second SAR is the SAR corresponding to the first power transmitted when the distance between the electronic device and the user is the target distance.

6. The transmission power control method according to claim 5, characterized in that: The radiation coefficient is a ratio of the second SAR to the first SAR.

7. The transmission power control method according to any one of claims 2 to 6, 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.

8. The transmission power control method according to any one of claims 2 to 6, characterized in that: If the target distance is less than or equal to the first distance threshold, power integration is performed on the transmission power of the electronic device in the second time period 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 a 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.

9. An electronic device, characterized in that: It 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 as described in any one of claims 1-8.

10. A computer-readable storage medium, characterized in that: The method comprises computer instructions, and when the computer instructions are executed on the electronic device, the electronic device executes the transmission power control method as described in any one of claims 1 to 8.

11. A computer program product, characterized in that When the computer program product runs on a computer, the computer is enabled to execute the transmission power control method according to any one of claims 1 to 8.

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