Transmit power adjustment method, device and system

Abstract

The present application discloses a transmission power adjustment method, device and system, which is applicable to electronic devices equipped with multiple antennas. In the process of an electronic device using multiple antennas to transmit signals or before using multiple antennas to transmit signals, the electronic device can determine whether to transmit signals according to the transmission power preset by the electronic device based on the positional relationship between the antennas. If the distance between the antennas is far, the antenna transmits the signal according to the preset transmission power. If the distance between the antennas is close, the electronic device reduces the transmission power of the antenna. In this way, the communication performance can be improved as much as possible while ensuring that the user is within a safe radiation range.

Description

Technical Field

[0001] The present application relates to the field of terminal and communication technology, and in particular to a method, device and system for adjusting transmission power. Background Art

[0002] With the development of information technology, while users enjoy the convenience brought by electronic devices, they are also increasingly concerned about the impact of electromagnetic radiation from electronic devices on human health. In this field, electromagnetic radiation is usually measured by indicators such as specific absorption rate (SAR) and maximum permissive exposure (MPE). For example, reducing electromagnetic radiation can be achieved by reducing SAR.

[0003] Generally, those skilled in the art reduce the electromagnetic radiation of electronic devices by reducing the transmission power of the antenna. However, reducing the transmission power of the antenna may reduce the communication quality, so controlling the transmission power needs to consider the balance between the two.

[0004] Taking mobile phones as an example, existing mobile phones have powerful functions, including multiple antennas such as wireless fidelity (WiFi) antennas, Bluetooth antennas, and near field communication (NFC) antennas. Therefore, when faced with a scenario where multiple antennas transmit signals at the same time, how to accurately control the antenna's transmission power to ensure that users are within a safe electromagnetic radiation range without affecting communication quality is a problem that needs to be solved urgently. Summary of the invention

[0005] The present application provides a transmission power adjustment method, device and system. The method can adjust the transmission power of each antenna when multiple antennas transmit signals simultaneously according to the positional relationship between the antennas, thereby ensuring that the user is in a safe radiation range and improving the communication performance as much as possible.

[0006] In a first aspect, an embodiment of the present application provides a transmission power adjustment method, where an electronic device includes a first antenna and a second antenna, and the method includes: the electronic device obtains a first distance between the first antenna and the second antenna; the electronic device determines whether the first distance is greater than a first value; the electronic device determines a first transmission power of the first antenna and a second transmission power of the second antenna; wherein, when the first distance is greater than the first value, the first transmission power is less than or equal to a first limit power, and the second transmission power is less than or equal to a second limit power; the first limit power is a maximum transmission power that complies with an electromagnetic radiation standard when the electronic device only uses the first antenna to transmit a signal; the second limit power is a maximum transmission power that complies with an electromagnetic radiation standard when the electronic device only uses the second antenna to transmit a signal; when the first distance is less than the first value, a sum of a first exposure ratio corresponding to the first transmission power and a second exposure ratio corresponding to the second transmission power is less than or equal to 1, the first exposure ratio is a ratio of the first transmission power to the first limit power, and the second exposure ratio is a ratio of the second transmission power to the second limit power; the electronic device uses the first antenna to transmit a signal according to the first transmission power, and at the same time, the electronic device uses the second antenna to transmit a signal according to the second transmission power.

[0007] By implementing the method provided in the first aspect, the electronic device can determine how to determine the transmission power of the antenna according to the positional relationship between the antennas. When the distance between the two antennas is far, the electronic device does not need to consider the radiation superposition effect of the two antennas, and only needs to make the transmission power of the two antennas less than or equal to their maximum transmission power that complies with the electromagnetic exposure standard. In this way, the electronic device can increase the transmission power of the antenna as much as possible while ensuring the safety of the user to ensure the quality of communication. When the distance between the two antennas is close, the radiation superposition effect of the two antennas transmitting signals at the same time is very obvious. The electronic device needs to consider the radiation superposition effect of the two antennas. Then the electronic device needs to ensure that the sum of the exposure ratios of the two antennas is less than or equal to 1, so as to ensure that the radiation superimposed by the two antennas is still within a safe range. It can be seen that the electronic device can dynamically adjust the transmission power of each antenna according to the distance between the antennas, which increases the flexibility of power adjustment.

[0008] In combination with the first aspect, in a possible implementation manner, an average transmission power of the first antenna in a first time is less than or equal to the first transmission power, and the first time is less than or equal to a time specified by an electromagnetic exposure standard;

[0009] That is to say, the first transmission power may be the maximum transmission power of the first antenna determined by the electronic device, or may be the maximum average transmission power of the first antenna determined by the electronic device. When the first transmission power is the maximum average transmission power of the first antenna determined by the electronic device, the actual transmission power of the first antenna may exceed the first transmission power, or be lower than the first transmission power, as long as it is ensured for a period of time, that is, the average value of the actual transmission power within the first time does not exceed the first transmission power. In this way, the electronic device can dynamically adjust the transmission power of the antenna according to the actual signal transmission situation of the antenna. When the signal of the antenna is weak, for example, when the antenna is blocked, the electronic device can increase the transmission power of the antenna in a short time to ensure the communication quality of the antenna.

[0010] In combination with the first aspect, in a possible implementation manner, the average transmission power of the second antenna in a first time is less than or equal to the second transmission power, and the first time is less than or equal to the time specified by the electromagnetic exposure standard.

[0011] That is to say, the second transmission power can be the maximum transmission power of the second antenna determined by the electronic device, or it can be the maximum average transmission power of the second antenna determined by the electronic device. When the second transmission power is the maximum average transmission power of the second antenna determined by the electronic device, the actual transmission power of the second antenna can exceed the second transmission power, or be lower than the second transmission power. It only needs to ensure that the average value of the actual transmission power within the first time does not exceed the second transmission power for a period of time. In this way, the electronic device can dynamically adjust the transmission power of the antenna according to the actual signal transmission situation of the antenna. When the signal of the antenna is weak, for example, when the antenna is blocked, the electronic device can increase the transmission power of the antenna in a short time to ensure the communication quality of the antenna.

[0012] In combination with the first aspect, in a possible implementation, the transmission power of the second antenna is less than or equal to the second transmission power, or the average transmission power of the second antenna in a first time is less than or equal to the second transmission power, and the first time is less than or equal to the time specified by the electromagnetic exposure standard.

[0013] That is, similar to the first antenna, the second transmit power may be the maximum transmit power of the second antenna determined by the electronic device, or may be the maximum average transmit power of the second antenna determined by the electronic device. Similarly, when the second transmit power is the maximum average transmit power of the second antenna, the electronic device may dynamically adjust the transmit power of the antenna according to the actual signal transmission situation of the antenna, thereby enhancing the degree of freedom of power adjustment.

[0014] In combination with the first aspect, in one possible implementation, the electronic device may use a time averaging algorithm to make the average transmission power of the first antenna in the first time less than or equal to the first transmission power, and to make the average transmission power of the second antenna in the first time less than or equal to the second transmission power.

[0015] In combination with the first aspect, in a possible implementation method, the electronic device stores a first configuration table, the first configuration table includes the first transmission power and the second transmission power, and when the first distance is greater than a first value, the electronic device determines the first transmission power of the first antenna and determines the second transmission power of the second antenna, specifically including: the electronic device determines the first transmission power of the first antenna and determines the second transmission power of the second antenna according to the first configuration table.

[0016] That is, the electronic device may store a single antenna power configuration table or a limited transmission power configuration table, and the single antenna power configuration table pre-stores the maximum transmission power of the antenna when the antenna transmits a signal alone, that is, the reference transmission power P R The transmission power limit configuration table stores the maximum transmission power of the antenna that meets the regulatory requirements, that is, the transmission power limit P L In this way, in a multi-antenna transmission scenario, the electronic device does not need to store the transmission power of each antenna when different antenna combinations transmit signals in the multi-antenna transmission scenario. The electronic device only needs to store the transmission power of each antenna in the single-antenna transmission scenario, which reduces the transmission power configuration work in the multi-antenna scenario and also reduces the memory occupied by the system.

[0017] In combination with the first aspect, in a possible implementation manner, the electronic device stores a second configuration table, the second configuration table includes a first reference exposure ratio and a second reference exposure ratio, and when the first distance is greater than a first value, the electronic device determines a first transmit power of the first antenna and determines a second transmit power of the second antenna, specifically including:

[0018] The electronic device determines a first transmission power of the first antenna according to the first reference exposure ratio, and determines a second transmission power of the second antenna according to the second reference exposure ratio, wherein the first transmission power is the product of the first limit power and the first reference exposure ratio, and the second transmission power is the product of the second limit power and the second reference exposure ratio.

[0019] That is, the electronic device may pre-store a reference exposure ratio configuration table, and determine the transmission power of the first antenna and the second antenna according to the reference exposure ratio in the reference exposure ratio configuration table.

[0020] In combination with the first aspect, in a possible implementation method, when the first distance is less than a first value, the electronic device determines the first transmission power of the first antenna and determines the second transmission power of the second antenna, specifically including: the electronic device determines the first exposure ratio and the second exposure ratio according to an exposure ratio allocation strategy, wherein the exposure ratio allocation strategy includes one or more of the following: average allocation, priority allocation, allocation according to service type, allocation according to signal strength, or allocation according to exposure ratio value; the electronic device determines the first transmission power of the first antenna according to the first exposure ratio, and determines the second transmission power of the second antenna according to the second exposure ratio.

[0021] When the distance between antennas is close, the electronic device can adjust the exposure ratio of the antenna to reduce the radiation superposition effect when the two antennas transmit signals, thereby ensuring that the user is within a safe radiation range.

[0022] In combination with the first aspect, in a possible implementation manner, the electronic device presets a total exposure ratio of the first antenna to the second antenna, where the total exposure ratio is the sum of the first exposure ratio and the second exposure ratio.

[0023] That is, before the electronic device adjusts the transmission power of the antenna, the electronic device can preset the total exposure ratio of the antenna in advance. The electronic device can allocate the exposure ratio of each antenna according to the preset total exposure ratio, and then calculate the transmission power of each antenna.

[0024] In combination with the first aspect, in a possible implementation method, when the first distance is less than a first value, the electronic device determines the first transmit power of the first antenna and determines the second transmit power of the second antenna, specifically including: the electronic device obtains a first reference exposure ratio and a second reference exposure ratio, the first reference exposure ratio is a ratio of the first reference power to the first limit power, and the second reference exposure ratio is a ratio of the second reference power to the second limit power; the first reference power is less than or equal to the first limit power, and the second reference power is less than or equal to the second limit power; when the sum of the first reference exposure ratio and the second reference exposure ratio is less than or equal to 1, the electronic device determines the first transmit power by the first reference power, and the electronic device determines the second transmit power by the second reference power.

[0025] That is to say, when the electronic device is preset with the antenna transmission power, and the sum of the exposure ratios corresponding to the preset antenna transmission power is less than or equal to 1, it means that when the antenna transmits signals according to the preset transmission power, the superimposed radiation of these antennas is still within the safe radiation range. The electronic device can directly transmit signals according to the threshold transmission power, thereby reducing the amount of calculation of the electronic device and speeding up the antenna power adjustment process.

[0026] In combination with the first aspect, in a possible implementation, the electronic device stores the first reference power and the second reference power, the first reference exposure ratio and the second reference exposure ratio; or, the electronic device stores the first reference power and the second reference power, the first limit power and the second limit power; or, the electronic device stores the first reference exposure ratio and the second reference exposure ratio, the first limit power and the second limit power.

[0027] That is to say, in order to determine the transmission power of the antenna in combination with the exposure ratio, the electronic device can be pre-set with any two configuration tables among the single antenna power configuration table, the limited transmission power configuration table, and the reference exposure ratio configuration table. In this way, the electronic device can calculate the transmission power of the antenna according to the preset configuration tables.

[0028] In combination with the first aspect, in a possible implementation method, the electronic device pre-stores an antenna position relationship table, and the antenna position relationship table is used to determine the distance between the first antenna and the second antenna; the electronic device obtains the first distance between the first antenna and the second antenna, specifically including: the electronic device obtains the first distance between the first antenna and the second antenna according to the antenna position relationship table.

[0029] That is to say, the electronic device can be pre-installed with an antenna position relationship table, so that the electronic device can determine the distance between the antennas in the multi-antenna transmission scenario based on the position relationship between the antennas in the antenna position relationship table, thereby determining what strategy these antennas can use to adjust the transmission power.

[0030] In a second aspect, an embodiment of the present application provides an electronic device, the electronic device comprising: an identification template to obtain a first distance between the first antenna and the second antenna; an adjustment template to determine whether the first distance is greater than a first value; a calculation template to determine a first transmission power of the first antenna and a second transmission power of the second antenna; wherein, when the first distance is greater than the first value, the first transmission power is less than or equal to a first limit power, and the second transmission power is less than or equal to a second limit power; the first limit power is a maximum transmission power that complies with electromagnetic radiation standards when the electronic device only uses the first antenna to transmit signals; the second limit power is a maximum transmission power that complies with electromagnetic radiation standards when the electronic device only uses the second antenna to transmit signals; when the first distance is less than the first value, the sum of a first exposure ratio corresponding to the first transmission power and a second exposure ratio corresponding to the second transmission power is less than or equal to 1, the first exposure ratio is a ratio of the first transmission power to the first limit power, and the second exposure ratio is a ratio of the second transmission power to the second limit power; the transmitting module uses the first antenna to transmit a signal according to the first transmission power, and at the same time, the electronic device uses the second antenna to transmit a signal according to the second transmission power.

[0031] In combination with the second aspect, in a possible implementation, the transmission power of the first antenna is less than or equal to the first transmission power, or the average transmission power of the first antenna in a first time is less than or equal to the first transmission power, and the first time is less than or equal to the time specified by the electromagnetic exposure standard.

[0032] In combination with the second aspect, in a possible implementation, the transmission power of the second antenna is less than or equal to the second transmission power, or the average transmission power of the second antenna in a first time is less than or equal to the second transmission power, and the first time is less than or equal to the time specified by the electromagnetic exposure standard.

[0033] In combination with the second aspect, in a possible implementation method, the storage module stores a first configuration table, the first configuration table includes the first transmission power and the second transmission power, and when the first distance is greater than a first value, the adjustment module determines the first transmission power of the first antenna and determines the second transmission power of the second antenna according to the first configuration table.

[0034] In combination with the second aspect, in a possible implementation, the electronic device stores a second configuration table, the second configuration table including a first reference exposure ratio and a second reference exposure ratio, and when the first distance is greater than a first value, the adjustment module determines the first transmission power of the first antenna according to the first reference exposure ratio, and determines the second transmission power of the second antenna according to the second reference exposure ratio, wherein the first transmission power is the product of the first limit power and the first reference exposure ratio, and the second transmission power is the product of the second limit power and the second reference exposure ratio.

[0035] In combination with the second aspect, in a possible implementation method, when the first distance is less than a first value, the adjustment module determines the first exposure ratio and the second exposure ratio according to an exposure ratio allocation strategy, wherein the exposure ratio allocation strategy includes one or more of the following: average allocation, priority allocation, allocation according to service type, allocation according to signal strength, or allocation according to exposure ratio value; the adjustment module determines the first transmission power of the first antenna according to the first exposure ratio, and determines the second transmission power of the second antenna according to the second exposure ratio.

[0036] In combination with the second aspect, in a possible implementation manner, the storage module presets a total exposure ratio of the first antenna to the second antenna, where the total exposure ratio is the sum of the first exposure ratio and the second exposure ratio.

[0037] In combination with the second aspect, in a possible implementation method, when the first distance is less than a first value, the adjustment module obtains a first reference exposure ratio and a second reference exposure ratio, the first reference exposure ratio being the ratio of a first reference power to a first limiting power, and the second reference exposure ratio being the ratio of the second reference power to the second limiting power; the first reference power is less than or equal to the first limiting power, and the second reference power is less than or equal to the second limiting power; when the sum of the first reference exposure ratio and the second reference exposure ratio is less than or equal to 1, the adjustment module determines the first transmission power using the first reference power, and the electronic device determines the second transmission power using the second reference power.

[0038] In combination with the second aspect, in one possible implementation, the storage module stores the first reference power and the second reference power, the first reference exposure ratio and the second reference exposure ratio; or, the electronic device stores the first reference power and the second reference power, the first limiting power and the second limiting power; or, the electronic device stores the first reference exposure ratio and the second reference exposure ratio, the first limiting power and the second limiting power.

[0039] In combination with the second aspect, in a possible implementation, the storage module pre-stores an antenna position relationship table, and the antenna position relationship table is used to determine the distance between the first antenna and the second antenna; the identification module obtains the first distance between the first antenna and the second antenna according to the antenna position relationship table.

[0040] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a display screen, a memory, one or more processors, multiple applications, and one or more programs; wherein the one or more programs are stored in the memory; and characterized in that when the one or more processors execute the one or more programs, the electronic device implements the method described in the first aspect or any one of the embodiments of the first aspect.

[0041] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which includes instructions. When the instructions are executed on an electronic device, the electronic device executes the method described in the first aspect or any one of the embodiments of the first aspect.

[0042] In a fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product runs on a computer, it enables the computer to execute the method described in the first aspect or any one of the implementation modes of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of a wireless communication system 10 provided in an embodiment of the present application;

[0044] Figure 2 A SAR distribution diagram measured during the SAR test provided in an embodiment of the present application;

[0045] Figure 3 A schematic diagram of the hardware structure of an electronic device 100 provided in an embodiment of the present application;

[0046] Figure 4 A schematic diagram of antenna positions of an electronic device 100 provided in an embodiment of the present application;

[0047] Figure 5 A schematic diagram of the software structure of the electronic device 100 provided in an embodiment of the present application;

[0048] Figure 6 A schematic diagram of the electromagnetic radiation distribution of the antenna provided in the embodiment of the present application when transmitting a signal;

[0049] Figure 7 A schematic diagram showing the relationship between the actual transmit power and the adjusted transmit power of the electronic device 100 provided in an embodiment of the present application;

[0050] Figure 8 The electronic device provided in the embodiment of the present application determines the transmission power of two antennas according to the distance;

[0051] Fig. 9 A method flow chart of a transmission power adjustment method provided in an embodiment of the present application;

[0052] Fig.10 A method flow chart of a transmission power adjustment method provided in an embodiment of the present application;

[0053] Fig.11 A schematic diagram of the structure of the transmission power adjustment device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be described clearly and in detail below in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0055] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0056] To facilitate understanding, the relevant terms and concepts involved in the embodiments of the present application are first introduced below.

[0057] When mobile phones, tablets and other electronic devices are connected to the network, they need to meet local laws, regulations and standards. For example, when products are connected to the network in China, they will undergo China Compulsory Certification (CCC). When products enter the European market, they need to undergo European Unified (Conformite Europeenne, CE) certification. When entering the US market, they need to undergo Federal Communication Commission (FCC) certification.

[0058] (1) Specific Absorption Rate (SAR)

[0059] SAR is a standard quantity used to measure the absorption of electromagnetic energy generated by electronic devices such as mobile phones by human tissue. The unit of SAR is W / Kg (watt / kilogram). The larger the SAR, the greater the impact of electromagnetic radiation on the user; conversely, the impact is smaller. At present, some regulatory agencies have established electromagnetic energy absorption specifications and set SAR limit values. The SAR limit value refers to the maximum amount of electromagnetic energy allowed to be absorbed per kilogram of human tissue within 6 minutes. For example, the SAR limit value set by the Federal Communications Commission (FCC) of the United States is 1.6W / Kg, and the SAR limit value set by the European Telecommunications Standard Insitute (ESTI) is 2.0W / Kg.

[0060] (2) Maximum Permissive Exposure (MPE)

[0061] MPE is similar to SAR and is also used to characterize the impact of electromagnetic energy generated by mobile phones and other electronic devices on the human body. The unit of MPE is W / m 2 (Watts / square meter). Usually the measurement value of MPE is power density (PD), which measures the electromagnetic energy absorbed by the human body per unit area.

[0062] SAR and MPE are both radiation indicators that measure the electromagnetic energy absorbed by the human body model through instruments. Among them, SAR can be used to measure the impact of low-frequency (less than 6GHz) radiation on the human body, and MPE can be used to measure the impact of high-frequency (greater than 6GHz) radiation on the human body.

[0063] (3) Total Exposure Ratio (TER)

[0064] As communication systems become increasingly complex, the number of antennas contained in electronic devices is also increasing. SAR testing requires traversing all transmitting antennas contained in the terminal device and all possible antenna combinations. When a single antenna or multiple groups of antennas transmit simultaneously, they must meet regulatory requirements. When multiple antennas transmit, the total exposure ratio is measured by TER.

[0065] TER can be used to measure the impact of electromagnetic radiation from electronic devices on the human body when multiple antennas transmit signals simultaneously. TER can be determined based on the above radiation indicators. Among them, TER can be expressed by formula 1:

[0066]

[0067] SARn It indicates the SAR measurement value of the nth antenna transmitting low-frequency signals when it is working. n,limit Indicates the SAR limit value of the nth antenna emitting low-frequency signals. Where n = 1, 2, ..., N, N represents the number of antennas emitting low-frequency (less than 6 GHz) signals. m It indicates the PD measurement value of the mth antenna transmitting high-frequency signals when it is working. m,limit Indicates the PD limit value of the mth antenna transmitting high-frequency signals. Where n = 1, 2, ..., M, where M represents the number of antennas transmitting high-frequency (frequency greater than 6 GHz) signals.

[0068] It can be seen that the total exposure ratio is the cumulative sum of the exposure ratios of each antenna transmitting the signal. When multiple antennas transmit signals at the same time, when TER≤1, the impact of the electromagnetic energy generated by the electronic equipment on the human body is within a safe range.

[0069] It should be noted that SAR and MPE are used to measure the electromagnetic radiation generated by antennas in different frequency bands (SAR describes the impact of low-frequency (usually less than 6GHz) radiation on the human body, and MPE usually describes the impact of high-frequency (frequency greater than 6GHz) radiation on the human body). The total exposure ratio can also be expressed as or,

[0070] (4) Time average algorithm

[0071] The time averaging algorithm can be used to control the average transmission power of the electronic device within a period of time to remain at or below a fixed value. The fixed value can be a limited transmission power determined according to the regulatory limit value of the radiation index.

[0072] Since SAR measures the electromagnetic energy absorbed by the human body over a period of time, the regulations allow the use of a time-average algorithm to calculate the average SAR value over a period of time so as not to exceed the SAR limit value. Among them, when an electronic device transmits a signal through a single antenna, Formula 2 can be used to measure whether the transmission power of the electronic device meets the regulatory requirements:

[0073]

[0074] SAR(t) represents the instantaneous value of SAR, T SAR Indicates the maximum average duration allowed by regulations, SAR limit Indicates the SAR limit value in the regulations. That is to say, when the average SAR value measured during a period of time when the electronic device transmits a signal is less than the SAR limit value, the transmission power of the electronic device meets the regulatory requirements.

[0075] Similarly, when an electronic device transmits a signal through a single antenna, the time averaging algorithm can be used to calculate the average MPE value over a period of time. Specifically, Formula 3 can be used to measure whether the transmission power of the electronic device meets regulatory requirements:

[0076]

[0077] In addition, when an electronic device transmits signals through multiple antennas and the operating frequencies of the antennas include high frequencies (frequencies greater than 6 GHz) and low frequencies (frequencies generally less than 6 GHz), Formula 4 can be used to measure whether the transmission power of the electronic device complies with regulatory requirements:

[0078]

[0079] It can be seen that when the sum of the average radiation index values ​​of multiple antennas over a period of time is less than or equal to the regulatory limit value of the radiation index, the transmission power of the electronic device meets the regulatory requirements.

[0080] Figure 1 A wireless communication system 10 to which the present application relates is shown.

[0081] Figure 1 The wireless communication system 10 provided in the embodiment of the present application is exemplified. The wireless communication system 10 may include multiple wireless communication devices, and wireless communication connections are established between the multiple devices. The devices in the wireless communication system 10 may be equipped with system, system, system, The operating systems of the various devices in the wireless communication system 10 may be the same or different, and this application does not limit this. Figure 1 As shown, in some embodiments, wireless communication system 10 includes electronic devices 100-107.

[0082] Among them, electronic device 100 is a device for sending wireless signals, and electronic devices 101-107 are devices for receiving wireless signals.

[0083] Electronic device 100 may refer to a terminal device that directly provides communication services to users, such as mobile phones, computers, notebooks, wireless headphones and other devices. The communication services may include call services, download services, device connection services, and the like. Electronic devices 101-107 may refer to electronic devices that establish wireless communication connections with electronic device 100, such as mobile phones, computers, notebooks, smart watches, smart bracelets, smart glasses, routers, satellites, base stations, and the like. The wireless communication connection may refer to a WiFi connection, an NFC connection, a Bluetooth connection, and the like. In the following embodiments, the terminal device may also be referred to as a terminal, which is typically an intelligent electronic device that can provide a user interface, interact with a user, and provide service functions to the user.

[0084] Accordingly, in order to realize the communication between the electronic device 100 and the electronic devices 101-107, the electronic devices 100-107 may be configured with a mobile communication module and a wireless communication module for communication. The mobile communication module may provide a solution for wireless communication including the second generation mobile communication technology (the 2th generation mobile communication technology, 2G) / the third generation mobile communication technology (the 3rd generation mobile communication technology, 3G) / the fourth generation mobile communication technology (the 4th generation mobile communication technology, 4G) / the fifth generation mobile communication technology (the 5th generation mobile communication technology, 5G) and the like applied on the terminal. The wireless communication module may include a Bluetooth (bluetooth, BT) module and / or a wireless local area network (wireless local area networks, WLAN) module, etc. Among them, the Bluetooth module can provide solutions including one or more Bluetooth communications in classic Bluetooth (Bluetooth 2.1) or Bluetooth low energy (BLE), and the WLAN module can provide solutions including one or more WLAN communications in wireless fidelity point-to-point connection (wireless fidelity point-to-peer, Wi-Fi P2P), wireless fidelity local area networks (wireless fidelity local area networks, Wi-Fi LAN) or wireless fidelity software access point (wireless fidelity software access point, Wi-Fi softAP). In some embodiments, Wi-Fi P2P refers to allowing devices in a wireless network to connect to each other in a point-to-point manner without going through a wireless router. The system is also called wireless fidelity direct (Wi-Fi direct). Devices that establish a Wi-Fi P2P connection can exchange data directly through Wi-Fi (must be in the same frequency band) without connecting to a network or hotspot, achieving point-to-point communication, such as transferring files, pictures, videos and other data. Compared with Bluetooth, Wi-Fi P2P has the advantages of faster search and transmission speeds and longer transmission distances.

[0085] When the electronic device 100 provides communication services to the user, the electronic device 100 needs to send signals to other devices through the antenna. At this time, the electromagnetic energy generated by the antenna will affect the user who is close to or in contact with the electronic device 100, thereby affecting the health of the human body.

[0086] In addition, the electronic device 100 can simultaneously turn on multiple antennas to send signals to multiple electronic devices in the electronic devices 101-107. For example, while the electronic device 100 uses WiFi technology to establish a WiFi connection with the electronic device 103, the electronic device 100 turns on Bluetooth to establish a Bluetooth connection with the electronic device 104. At this time, the electronic device 100 needs to turn on multiple antennas (WiFi antennas, Bluetooth antennas) to transmit signals simultaneously. In the embodiment of the present application, the scenario in which the electronic device 100 turns on multiple antennas to transmit signals simultaneously is called a multi-antenna transmission scenario.

[0087] Then, in the wireless communication system 10, when the electronic device 100 turns on multiple antennas to transmit signals, the electronic device 100 needs to control the transmission power of the multiple antennas to ensure that the user is within a safe radiation range.

[0088] It should be noted that Figure 1 The wireless communication system 10 shown is only used to assist in describing the technical solution provided by the embodiment of the present application, and does not limit the embodiment of the present application. In actual business scenarios, the wireless communication system 10 may include more or fewer electronic devices, and the present application does not impose any restrictions on the type of electronic devices, the number of electronic devices, the connection method between electronic devices, etc.

[0089] In a multi-antenna transmission scenario, in order to ensure that the electromagnetic radiation generated by the electronic device 100 is within a safe radiation range when transmitting signals, the electronic device 100 needs to limit the transmission power of each antenna to ensure that the transmission power meets the requirements of relevant regulations. In a specific implementation, the transmission power of each antenna can be limited to be less than the transmission power corresponding to the radiation index specified in relevant regulations, for example, the radiation index can be SAR, MPE, etc.

[0090] One implementation method is that the electronic device 100 can be configured with a multi-antenna power configuration table. Before the electronic device 100 transmits a signal, the electronic device 100 can adjust the transmission power according to the power value in the multi-antenna power configuration table to ensure that the transmission power of the electronic device 100 does not exceed the power value.

[0091] The multi-antenna power configuration table indicates the power values ​​of the electronic device 100 for different antennas and different scenarios, and the power value is the maximum transmit power allowed for the electronic device 100, which is less than or equal to the power value required by the regulations. In other words, as long as the electronic device 100 determines the antennas that transmit signals so that the transmit powers of these antennas do not exceed the power values ​​in the multi-antenna power configuration table, the safety of the user can be guaranteed.

[0092] Table 1 exemplarily shows a multi-antenna power configuration table configured inside the electronic device 100 in a multi-antenna scenario.

[0093] Table 1

[0094]

[0095] Scenario 1, Scenario 2, ... Scenario M may represent scenarios in which the electronic device 100 transmits signals when it is close to different parts of the human body. Antennas X, Y, and Z may refer to antennas included in the electronic device 100. The power values ​​in the multi-power configuration table may be calculated based on the transmit power of the electronic device 100 that meets regulatory requirements when each antenna transmits a signal separately, combined with TER≤1, or obtained through simulation testing, or obtained through testing in actual test scenarios.

[0096] That is, the electronic device 100 is usually configured with two configuration tables, a single-antenna power configuration table and a multi-antenna power configuration table.

[0097] The single antenna power configuration table is configured with the transmit power that meets regulatory requirements when each antenna transmits a signal independently, that is, the reference transmit power P R The single antenna power configuration table includes the reference transmission power P of the electronic device 100 under different radiation index test scenarios for different antennas in a single antenna transmission scenario. R The reference transmission power P R is the maximum transmission power allowed for the electronic device 100, the reference transmission power P R Less than or equal to the limit transmission power P in the regulatory requirements L The single-antenna transmission scenario is a scenario in which the electronic device 100 uses one antenna to transmit signals. It should be understood that limiting the transmission power P L It refers to the transmission power that meets regulatory requirements for different antennas in different radiation index test scenarios under a single antenna transmission scenario.

[0098] In order to obtain the single antenna power configuration table of the electronic device 100, it is necessary to place the electronic device 100 in a radiation index test environment for testing, so as to determine the reference transmission power P of each antenna in the single antenna power configuration table. R .

[0099] Table 2 exemplarily shows a single antenna power configuration table of the electronic device 100 in a single antenna scenario when the electronic device 100 is placed in a SAR test environment for testing.

[0100] Table 2

[0101] Antenna 1 Antenna 2 … Antenna N Scenario 1 <![CDATA[P R 11]]> <![CDATA[P R 12]]> … <![CDATA[P R 1N]]> Scenario 2 <![CDATA[P R 21]]> <![CDATA[P R 22]]> … <h2 style=";text-align:left;direction:ltr"><![CDATA[P <h2 style=";text-align:left;direction:ltr"> R <h2 style=";text-align:left;direction:ltr"> 2N]]><h2 style=";text-align:left;direction:ltr"> … … … … … Scene M <![CDATA[P R M1]]> <h2 style=";text-align:left;direction:ltr"><![CDATA[P <h2 style=";text-align:left;direction:ltr"> R <h2 style=";text-align:left;direction:ltr"> M2]]><h2 style=";text-align:left;direction:ltr"> … <![CDATA[P R MN]]>

[0102] Wherein, N represents the number of antennas of the electronic device 100, and M represents the number of SAR test scenarios. Since the radiation values ​​that can be received by the user's head, torso, limbs and other parts are different, the SAR specification has different SAR limit values ​​for different parts of the user. Therefore, the SAR test scenario can include test scenarios when the electronic device 100 is close to different parts of the human body. For example, scenario 1 can represent the scenario of testing SAR when the electronic device 100 is close to the user's head, and scenario 2 can represent the scenario of testing SAR when the electronic device 100 is close to the user's torso. R XY (X=1, 2…M, Y=1, 2,…N) represents the reference transmission power P allowed for antenna X when the electronic device 100 uses antenna X to transmit signals in scenario Y. R .

[0103] During the actual SAR test process, the electronic device 100 can be placed close to a human body model, and the SAR value of the human body model can be measured to determine whether the transmission power of the electronic device 100 meets the SAR specification. Specifically, a chemical liquid can be used as the test liquid to simulate human tissue fluid. For example, when the test liquid is placed in a human head model and the electronic device 100 is placed close to the human head model, it can be used to simulate the test scenario when the above-mentioned electronic device 100 is close to the user's head. Then, when the electronic device 100 uses an antenna to transmit a signal, a probe is used to scan the test liquid, and the SAR value of the test liquid is measured by the probe to determine whether the transmission power of the antenna meets the SAR specification. During the test process, since the transmission power is proportional to the SAR value, the transmission power can be adjusted, and combined with the SAR test results to determine whether the transmission power used in the test process meets the regulatory requirements, thereby obtaining the reference transmission power P in Table 2 above. R .

[0104] Figure 2 The exemplary embodiment shows that when the electronic device 100 is close to the user's head, the electronic device 100 turns on the antenna 1 and uses a power value of P R The SAR distribution diagram of the test results when the signal is transmitted with a transmission power of 11. Figure 2It can be seen that the darker the color, the greater the SAR value and the greater the radiation. Among them, the SAR value in area 1 is the largest. If the SAR value does not exceed the SAR specification, it means that when the electronic device 100 is close to the user's head, the antenna 1 of the electronic device 100 uses a power value of P R The transmission power of 11 is in compliance with the regulatory requirements of SAR.

[0105] The multi-antenna power configuration table is manually configured based on the single-antenna power configuration table. Usually, in order to obtain the transmit power of each antenna in the multi-antenna power configuration table, it is necessary to manually introduce a back-off power based on the transmit power of the antenna described in the single-antenna configuration table, so that when multiple antennas transmit power at the same time, it is ensured that when the radiation of each antenna is superimposed, the user is still in a safe radiation range. Here, the transmit power of an antenna in the multi-antenna power configuration table is the transmit power of the antenna in the single-antenna power configuration table minus the back-off power. For example, Power1X can be P R 11 minus the first back-off power, Power1Y can be P R 12 minus the second back-off power, wherein the first back-off power may be equal to or unequal to the second back-off power.

[0106] It can be seen that when the electronic device 100 uses antenna X and antenna Y to transmit signals, it is necessary to list the power values ​​of antenna X and antenna Y in different scenarios (for example, the antenna is close to the head scenario and the antenna is close to the body scenario) in this case. When the electronic device 100 uses antenna X, antenna Y and antenna Z to transmit signals, it is necessary to list the power values ​​of antenna X, antenna Y and antenna Z in different scenarios in this case. Similarly, when the electronic device 100 includes antennas X, Y, and Z, the case of two concurrent antennas includes: antenna XY, antenna XZ, and antenna YZ, and the case of three concurrent antennas includes: antenna XYZ. That is, if the electronic device includes 3 antennas, Table 1 should include the transmission power of each antenna in different scenarios for 4 antenna combinations.

[0107] That is to say, Table 1 needs to include the transmission power of each antenna in various antenna combinations in different scenarios to ensure that all possible situations are included in the multi-antenna power configuration table during the actual signal transmission process. Then, when the number of antennas of the electronic device 100 is large, the structure of the multi-antenna power configuration table will be more complicated, which increases the configuration workload of the configuration personnel and is prone to configuration errors. The multi-antenna configuration table will also occupy a large amount of memory.

[0108] In addition, the multi-antenna power configuration table does not take into account the impact of the positional relationship of multiple antennas on the radiation size. Because in actual situations, when the positions of multiple antennas are far apart, the electromagnetic radiation generated by these multiple antennas is less superimposed and the superposition effect is weak, so there is no need to combine TER≤1 to calculate the transmit power of these multiple antennas. Only when the positions of multiple antennas are close, the electromagnetic radiation generated by these multiple antennas is more superimposed, and it can be considered that the radiation of multiple antennas is superimposed on each other. However, the multi-antenna power configuration table simply introduces back-off power to configure the transmit power values ​​of multiple antennas when the distances between multiple antennas are close, which cannot guarantee good communication performance. The introduction of back-off power will lead to a decrease in communication quality. For example, signal freezes may occur, and good communication performance cannot be guaranteed.

[0109] The embodiment of the present application provides a method for adjusting transmission power in a multi-antenna transmission scenario, which is applied to an electronic device equipped with multiple antennas. Specifically, by determining the position relationship of the transmitting antennas, an exposure ratio allocation strategy is used to allocate exposure ratios to the transmitting antennas.

[0110] When the electronic device 100 uses multiple antennas to transmit signals, it can first obtain the positional relationship between the multiple antennas, and select different exposure ratio allocation strategies according to the positional relationship to configure the exposure ratio of the multiple antennas. The exposure ratio allocation strategy may include but is not limited to the following methods: allocating exposure ratios evenly to each antenna, allocating exposure ratios according to a certain proportional coefficient, etc. Furthermore, the electronic device can also allocate exposure ratios preferentially according to the service type, and / or allocate exposure ratios according to the signal strength.

[0111] For example, in a dual-antenna concurrent scenario, the positional relationship between antenna 1 and antenna 2, which transmit signals simultaneously, is distance level 1 (for example, close distance). Considering that the radiation overlap of the two antennas at distance level 1 is relatively large, exposure ratio allocation strategy 1 is selected to calculate the transmit power of the two antennas. Exposure ratio allocation strategy 1 can evenly allocate exposure ratios for each antenna or allocate exposure ratios according to coefficients. If the positional relationship between antenna 1 and antenna 2, which transmit signals simultaneously, is distance level 2 (for example, long distance), antenna 1 and antenna 2 can be configured according to the single antenna exposure ratio.

[0112] Electronic devices can avoid manually configuring the transmission power of each antenna in the dual-antenna concurrent scenario by pre-judging the positional relationship between antennas in the multi-antenna concurrent state and adopting different exposure ratio allocation strategies to configure the transmission power of the dual antennas that transmit signals. This can ensure that the radiation indicators do not exceed the regulatory values ​​while ensuring the communication quality.

[0113] Electronic devices can allocate exposure ratios according to different exposure ratio allocation strategies based on the strength of antenna signals and the type of service, thereby ensuring communication quality. For example, for antennas that are closer, a larger exposure ratio can be set for antenna 1 in data service; or, for antenna 1 in a situation where the antenna signal is strong, a larger exposure ratio can be set.

[0114] Further, after the electronic device 100 obtains the transmission power of each antenna, the electronic device 100 can use the time averaging algorithm to set the obtained transmission power as the average power of each antenna. In the actual process of transmitting signals, the electronic device 100 can make the average value of the transmission power within a period of time less than or equal to the average power. In other words, the instantaneous power value of the antenna at different times can be calculated according to the time averaging algorithm.

[0115] The embodiment of the present application also provides a transmission power adjustment method, which is applied to an electronic device equipped with multiple antennas. For antennas at a longer distance, the exposure ratio allocation strategy is not used, but the exposure ratio allocation strategy is used for antennas at a closer distance.

[0116] In the transmission power adjustment method provided in an embodiment of the present application, the electronic device 100 can first obtain the positional relationship between the multiple antennas when using multiple antennas to transmit signals, or before using multiple antennas to transmit signals, and select different strategies for different antennas to configure the antenna transmission power according to the positional relationship of the multiple antennas.

[0117] Among the multiple antennas, when there is an antenna that is far away from the other antennas, the electronic device 100 can transmit signals according to the reference transmission power of the antenna, limiting the transmission power, the preset transmission power, or the transmission power calculated according to the exposure ratio.

[0118] For example, the electronic device may determine that the antennas in the multiple antennas whose distances to other antennas satisfy the first distance condition (e.g., greater than distance level 1) are far antennas, and the antennas in the multiple antennas whose distances to other antennas satisfy the second distance condition (e.g., less than distance level 1) are near antennas. In some embodiments, the near antennas are several sets, including at least two antennas.

[0119] Among the multiple antennas, when there are antennas at a relatively close distance, the electronic device 100 can adjust the transmission power of the antennas at a relatively close distance so that the total exposure ratio TER of the antennas at a relatively close distance is ≤ 1. In a specific implementation, the electronic device 100 can pre-set the TER of the antennas at a relatively close distance, and then adjust the exposure ratio of the antennas at a relatively close distance according to the exposure ratio allocation strategy, and then calculate the transmission power of the antennas.

[0120] The exposure ratio allocation strategy may also include but is not limited to the following methods: allocating exposure ratios evenly to each antenna, preferentially allocating exposure ratios to a certain antenna, allocating exposure ratios according to service type, allocating exposure ratios according to a certain coefficient, allocating exposure ratios according to signal strength, etc.

[0121] Specifically, the electronic device may also determine the service type of each antenna and assign different exposure ratios to different antennas. The electronic device may also determine the signal strength of different antennas and assign different exposure ratios to different antennas.

[0122] Further, after the electronic device 100 obtains the transmission power of each antenna, the electronic device 100 can use the time averaging algorithm to set the obtained transmission power as the average power of each antenna. In the actual process of transmitting signals, the electronic device 100 can make the average value of the transmission power within a period of time less than or equal to the average power. In other words, the instantaneous power value of the antenna at different times can be calculated according to the time averaging algorithm.

[0123] For example, in a dual-antenna concurrent scenario, when the distance between the two antennas is far, the electronic device 100 can ignore the radiation effect between the two antennas and transmit signals with a larger transmit power. In this way, the user's safety is guaranteed while the communication performance is guaranteed as much as possible. When the distance between the two antennas is close, the electronic device 100 uses the exposure ratio allocation strategy to dynamically allocate the exposure ratio of each antenna according to the principle of TER≤1, and then obtains the adjusted exposure ratio. The antenna's transmit power is calculated through the exposure ratio, so that the electronic device 100 can flexibly adjust the transmit power of each antenna. In this way, when the distance between the antennas is far, the antenna's transmit power is reduced to a smaller extent, and when the distance between the antennas is close, the antenna's transmit power is reduced to a larger extent. In addition, the electronic device 100 only needs to pre-store the reference transmit power P of each antenna. R , the reference exposure ratio ER, the position relationship between the antennas is sufficient, and there is no need to configure the transmit power of each antenna in each antenna combination in the multi-antenna scenario, which reduces the transmit power configuration work in the multi-antenna scenario and also reduces the memory occupied by the system. In addition, the transmit power calculated by the electronic device 100 is determined as the average power of each antenna according to the time averaging algorithm. In this way, in the actual process of transmitting signals, the electronic device 100 can dynamically adjust the power value of the antenna according to the actual situation, which not only ensures that the user is within a safe radiation range for a period of time, but also ensures the communication quality of the electronic device 100 as much as possible.

[0124] Reference transmit power P R It refers to the transmission power that the electronic device 100 is configured in advance according to the regulatory requirements. The power value is less than or equal to the limited transmission power P L , limit the transmission power P LThis is the maximum transmission power that meets regulatory requirements. The reference transmission power of the antenna P R With limited transmission power P L The ratio of is the reference exposure ratio ER of the antenna.

[0125] The electronic device 100 may pre-store an antenna position relationship table, and may also pre-store a single antenna power configuration table, referring to any two of the exposure ratio configuration table and the transmission power limit configuration table.

[0126] The single antenna transmission power configuration table includes the reference transmission power P when each antenna in the electronic device 100 transmits a signal independently. R The antenna position relationship table includes the position relationship between multiple antennas of the electronic device 100, and the limited transmission power configuration table includes the limited transmission power P of each antenna. L The reference exposure ratio configuration table includes the reference exposure ratio ER of each antenna. For a detailed description of the single antenna power configuration table, the reference exposure ratio configuration table, and the antenna position relationship table, please refer to the subsequent embodiments.

[0127] The embodiment of the present application also provides a method for adjusting the transmission power, which is applied to the scenario where two antennas transmit signals at the same time. The electronic device 100 can obtain the distance between the two antennas. When the distance between the two antennas is greater than a first value, the electronic device can adjust the transmission power of the two antennas so that the transmission power of the two antennas is less than or equal to their respective maximum transmission power that complies with regulatory requirements. When the distance between the two antennas is less than the first value, the electronic device can determine the transmission power of the two antennas on the premise of ensuring that the sum of the exposure ratios corresponding to the two antennas is less than or equal to 1. In this way, the electronic device 100 can determine whether to calculate the transmission power of the antenna based on the sum of the exposure ratios being less than or equal to 1 based on the distance between the two antennas.

[0128] exist Figure 1In the wireless communication system 10 shown, the electronic device 100 can obtain the positional relationship between the multiple antennas before using multiple antennas to communicate with one or more electronic devices in the electronic devices 101-107 at the same time, or during the communication process. When there is a long distance from other antennas, the electronic device 100 can transmit a signal according to the reference transmit power of the antenna in the single antenna configuration table, or transmit a signal with a preset transmit power. When there are antennas that are close to each other, the electronic device 100 can obtain the reference transmit power of these antennas in the single antenna configuration table, the reference exposure ratio in the reference exposure ratio configuration table, and adjust the exposure ratio of these antennas according to the exposure ratio allocation strategy, thereby calculating the transmit power of these antennas, and obtaining the transmit power transmit signal according to the calculation. In addition, the electronic device 100 can also use a time averaging algorithm to ensure that the average power of the transmit power of the electronic device 100 over a period of time does not exceed the transmit power finally determined by these antennas.

[0129] Figure 3 A schematic diagram of the hardware structure of the electronic device 100 is shown.

[0130] The electronic device 100 may be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a personal digital assistant (PDA), an augmented reality (AR) device, a virtual reality (VR) device, an artificial intelligence (AI) device, a wearable device, an in-vehicle device, a smart home device and / or a smart city device. The embodiments of the present application do not impose any special restrictions on the specific type of the electronic device.

[0131] The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, a display screen 194, and a subscriber identification module (SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, etc.

[0132] It is to be understood that the structure illustrated in the embodiment of the present invention 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 separate 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.

[0133] The processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Different processing units may be independent devices or integrated into one or more processors.

[0134] In some embodiments, the processor 110 may determine the transmit power of each antenna of the electronic device 100 according to the positional relationship between the antennas. Specifically, when there is an antenna that is far away from other antennas, the processor 110 may determine the transmit power of the antenna as the reference transmit power, and when there are antennas that are close in distance, the processor 110 may adjust the exposure ratios of the antennas that are close in distance according to the exposure ratio allocation strategy, and calculate the transmit power of the antennas that are close in distance.

[0135] The controller can generate operation control signals according to the instruction operation code and timing signal to complete the control of instruction fetching and execution.

[0136] The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may store instructions or data that the processor 110 has just used or cyclically used. If the processor 110 needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

[0137] In some embodiments, the processor 110 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 universal serial bus (USB) interface, etc.

[0138] The wireless communication function of the electronic device 100 can be implemented through antenna 1, antenna 2, antenna 3, mobile communication module 150, wireless communication module 160, modem processor and baseband processor.

[0139] Antenna 1, antenna 2, and antenna 3 are used to transmit and receive electromagnetic wave signals. Each antenna in the electronic device 100 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve the utilization of the antennas. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

[0140] In some embodiments, different antennas may be divided according to wireless communication technologies, for example, antennas 1-3 may include WiFi antennas, Bluetooth antennas, NFC antennas, GPS antennas, etc. Alternatively, different antennas may be divided according to data transmitted by the antennas, for example, antennas 1-3 may include data antennas, voice antennas, etc.

[0141] The mobile communication module 150 can provide solutions for wireless communications including 2G / 3G / 4G / 5G, etc., applied to the electronic device 100. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 150 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 150 can be set in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 can be set in the same device as at least some of the modules of the processor 110.

[0142] The modem processor may include a modulator and a demodulator. Among them, the modulator is used to modulate the low-frequency baseband signal to be sent into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After the low-frequency baseband signal is processed by the baseband processor, it is passed to the application processor. The application processor outputs a sound signal through an audio device (not limited to a speaker 170A, a receiver 170B, etc.), or displays an image or video through a display screen 194. In some embodiments, the modem processor may be an independent device. In other embodiments, the modem processor may be independent of the processor 110 and be set in the same device as the mobile communication module 150 or other functional modules.

[0143] In some embodiments, the modem processor may be used to control the transmit power of the antenna and may also be used to identify whether the electronic device 100 is in a multi-antenna transmission scenario.

[0144] The wireless communication module 160 can provide wireless communication solutions 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 (IR), etc., which are applied to the electronic device 100. The wireless communication module 160 can be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via antenna 2 or antenna 3, demodulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110. The wireless communication module 160 can also receive the signal to be sent from the processor 110, modulate the frequency, amplify it, and convert it into electromagnetic waves for radiation through antenna 2 or antenna 3.

[0145] In some embodiments, the antenna 1 of the electronic device 100 is coupled to the mobile communication module 150, and the antenna 2 and the antenna 3 are coupled to the wireless communication module 160, so that the electronic device 100 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long term evolution (LTE), BT, GNSS, WLAN, NFC, FM, and / or IR technology. The GNSS may include a global positioning system (GPS), a global navigation satellite system (GLONASS), a Beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS) and / or a satellite based augmentation system (SBAS).

[0146] In some embodiments, the actual positions of antennas 1-3 in electronic device 100 can be referred to as follows: Figure 4 The electronic device structure described above. Figure 4 (a) shows the side where the back cover of the electronic device 100 is located. Figure 4 (b) shows the positional relationship of the antenna inside the electronic device 100 after the rear cover of the electronic device 100 is removed. Figure 4 As can be seen in (b), antenna 1 is close to the top of electronic device 100 and is farther away from antenna 2 and antenna 3, while antenna 2 and antenna 3 are closer.

[0147] It is understandable that the electronic device 100 may include more or fewer antennas. Figure 3 The antenna positions shown are for exemplary purposes only and do not constitute a limitation to the present application.

[0148] The electronic device 100 implements the display function through a GPU, a display screen 194, and an application processor. The GPU is a microprocessor for image processing, which connects the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

[0149] The display screen 194 is used to display images, videos, etc. The display screen 194 includes a display panel. The display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active matrix organic light-emitting diode or an active matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), Miniled, MicroLed, Micro-oLed, a quantum dot light-emitting diode (QLED), etc. In some embodiments, the electronic device 100 may include 1 or N display screens 194, where N is a positive integer greater than 1.

[0150] The internal memory 121 may include one or more random access memories (RAM) and one or more non-volatile memories (NVM).

[0151] In some embodiments, the internal memory 121 may be used to store the antenna position relationship table, and may also be used to store any two of the single antenna power configuration table, the limited transmit power configuration table, and the reference exposure ratio configuration table. For specific descriptions of the single antenna power configuration table, the reference exposure ratio configuration table, the limited transmit power configuration table, and the antenna position relationship table, see the subsequent embodiments.

[0152] Random access memory may include static random-access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM, for example, the fifth generation DDR SDRAM is generally referred to as DDR5 SDRAM), etc.; non-volatile memory may include disk storage devices and flash memory.

[0153] Flash memory can be divided into NOR FLASH, NAND FLASH, 3D NAND FLASH, etc. according to the operating principle; single-level cell (SLC), multi-level cell (MLC), triple-level cell (TLC), quad-level cell (QLC), etc. according to the storage unit potential level; universal flash storage (UFS), embedded multi media card (eMMC), etc. according to the storage specification.

[0154] The random access memory can be directly read and written by the processor 110, and can be used to store executable programs (such as machine instructions) of the operating system or other running programs, and can also be used to store user and application data.

[0155] The non-volatile memory may also store executable programs and user and application data, etc., and may be loaded into the random access memory in advance for direct reading and writing by the processor 110 .

[0156] The electronic device 100 can implement audio functions such as music playing and recording through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the headphone jack 170D, and the application processor.

[0157] The electronic device may be a portable terminal device equipped with iOS, Android, Microsoft or other operating systems, such as a mobile phone, a tablet computer, a wearable device, etc., and may also be a non-portable terminal device such as a laptop computer with a touch-sensitive surface or a touch panel, a desktop computer with a touch-sensitive surface or a touch panel. The software system of the electronic device 100 may adopt a layered architecture, an event-driven architecture, a micro-core architecture, a micro-service architecture, or a cloud architecture. The embodiment of the present invention takes the Android system of the layered architecture as an example to exemplify the software structure of the electronic device 100.

[0158] Figure 5 1 is a software structure block diagram of the electronic device 100 according to an embodiment of the present invention.

[0159] The layered architecture divides the software into several layers, each with clear roles and division of labor. The layers communicate with each other through software interfaces. In some embodiments, the Android system is divided into four layers, from top to bottom: the application layer, the application framework layer, the Android runtime and system library, and the kernel layer.

[0160] The application layer can include a series of application packages.

[0161] like Figure 5 As shown, the application package may include camera, gallery, calendar, call, map, navigation, WLAN, Bluetooth, music, video, short message and other applications.

[0162] The application framework layer provides an application programming interface (API) and a programming framework for the applications in the application layer. The application framework layer includes some predefined functions.

[0163] like Figure 5 As shown, the application framework layer may include a window manager, a content provider, a view system, a phone manager, a resource manager, a notification manager, and the like.

[0164] The window manager is used to manage window programs. The window manager can obtain the display screen size, determine whether there is a status bar, lock the screen, capture the screen, etc.

[0165] Content providers are used to store and retrieve data and make it accessible to applications. The data may include videos, images, audio, calls made and received, browsing history and bookmarks, phone books, etc.

[0166] The view system includes visual controls, such as controls for displaying text, controls for displaying images, etc. The view system can be used to build applications. A display interface can be composed of one or more views. For example, a display interface including a text notification icon can include a view for displaying text and a view for displaying images.

[0167] The phone manager is used to provide communication functions of the electronic device 100, such as management of call status (including connecting, hanging up, etc.).

[0168] The resource manager provides various resources for applications, such as localized strings, icons, images, layout files, video files, and so on.

[0169] The notification manager enables applications to display notification information in the status bar. It can be used to convey notification-type messages and can disappear automatically after a short stay without user interaction. For example, the notification manager is used to notify download completion, message reminders, etc. The notification manager can also be a notification that appears in the system top status bar in the form of a chart or scroll bar text, such as notifications of applications running in the background, or a notification that appears on the screen in the form of a dialog window. For example, a text message is displayed in the status bar, a prompt sound is emitted, an electronic device vibrates, an indicator light flashes, etc.

[0170] Android Runtime includes core libraries and virtual machines. Android runtime is responsible for scheduling and management of the Android system.

[0171] The core library consists of two parts: one part is the function that needs to be called by the Java language, and the other part is the Android core library.

[0172] The application layer and the application framework layer run in a virtual machine. The virtual machine executes the Java files of the application layer and the application framework layer as binary files. The virtual machine is used to perform functions such as object life cycle management, stack management, thread management, security and exception management, and garbage collection.

[0173] The system library may include multiple functional modules, such as surface manager, media library, 3D graphics processing library (such as OpenGL ES), 2D graphics engine (such as SGL), etc.

[0174] The surface manager is used to manage the display subsystem and provide the fusion of 2D and 3D layers for multiple applications.

[0175] The media library supports playback and recording of a variety of commonly used audio and video formats, as well as static image files, etc. The media library can support a variety of audio and video encoding formats, such as: MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc.

[0176] The 3D graphics processing library is used to implement 3D graphics drawing, image rendering, compositing, and layer processing.

[0177] A 2D graphics engine is a drawing engine for 2D drawings.

[0178] The kernel layer is the layer between hardware and software. The kernel layer contains at least display driver, camera driver, audio driver, and sensor driver.

[0179] The following describes a method for adjusting transmission power provided in an embodiment of the present application.

[0180] In some embodiments, the electronic device includes a single antenna power configuration table. For a specific description of the single antenna power configuration table, please refer to the previous related content, which will not be repeated here.

[0181] In some embodiments, the electronic device further stores limited transmission power data corresponding to different antennas. In some embodiments, the limited transmission power data may be stored in the memory of the electronic device 100 in the form of a configuration table.

[0182] The table of limited transmit power configuration includes the limited transmit power P that meets regulatory requirements for different antennas in different radiation index test scenarios under a single antenna transmission scenario. L Table 3 shows an exemplary configuration table of limited transmission power of the electronic device 100. Wherein, N represents the number of antennas of the electronic device 100, and M represents the number of SAR test scenarios. L XY (X=1, 2…M, Y=1, 2,…N) represents the limited transmission power P allowed for antenna X when the electronic device 100 uses antenna X to transmit signals in scenario Y. L .

[0183] Table 3

[0184]

[0185]

[0186] Similar to the single antenna power configuration table, each power in the limited transmission power configuration table is also tested by placing the electronic device 100 in a radiation index test environment. The above Table 3 can be the transmission power used by the antenna when the electronic device 100 is placed in a SAR test environment and the tested SAR value is equal to the SAR limit value. For specific information about the SAR test process, please refer to the relevant description in the above single antenna power configuration table. Alternatively, each power in the limited transmission power configuration table can also be obtained by simulation calculation. The embodiment of the present application does not limit the calculation method of each power in the limited transmission power configuration table.

[0187] In some embodiments, the electronic device stores reference exposure ratio configuration data of different antennas, and the reference exposure ratio configuration data may be stored in a memory of the electronic device in the form of a configuration table.

[0188] The reference exposure ratio configuration table includes reference exposure ratios ER of different antennas in different scenarios. Table 4 exemplarily shows the reference exposure ratio configuration table of the electronic device 100 .

[0189] Table 4

[0190] Antenna 1 Antenna 2 … Antenna N Scenario 1 Ratio11 Ratio12 … Ratio1N Scenario 2 Ratio21 Ratio22 … Ratio2N … … … … … Scene M RatioM1 RatioM2 … RatioMN

[0191] The reference exposure ratio of the antenna refers to the reference transmission power P in the single antenna power configuration table. R The ratio of the actual SAR when transmitting a signal to the SAR limit value under the SAR specification. The exposure ratio is less than or equal to 1. The larger the exposure ratio, the closer the antenna power value is to the limited transmission power under the SAR specification. R However, the reference transmit power P R It cannot show the relationship with the limited transmit power under the SAR specification, while the reference exposure ratio ER in the reference exposure ratio configuration table can clearly indicate the reference transmit power P R The limit transmission power P under the SAR specification L The ratio relationship or size relationship.

[0192] For example, in scenario 1, according to the single antenna power configuration table, the reference transmit power P of antenna 1 is R is 150mW. According to the reference exposure ratio configuration table, the exposure ratio of antenna 1 is 0.6. Since power is proportional to SAR, it is assumed that the limited transmission power of antenna 1 under the SAR specification is P L1 , then 150: P L1 =0.6, it can be concluded that the limited transmission power P of antenna 1 under the SAR specification L1 =150 / 0.6=250mW.

[0193] It can be seen that the ER of the antenna is ≤ 1. When ER = 1, the reference transmission power P allowed for the antenna is R Equivalent to the limited transmission power under the SAR specification is P L .

[0194] It can be seen that the reference exposure ratio configuration table is related to the single antenna power configuration table and the limited transmission power configuration table of the antenna, because the reference transmission power P of the antenna R With limited transmission power P L The ratio of is the reference exposure ratio ER of the antenna. Then, in actual situations, the electronic device 100 only needs to be configured with any two of the single antenna power configuration table, the limited transmission power configuration table, and the reference exposure ratio configuration table to obtain the value in the other configuration table. For example, when the electronic device 100 is configured with the single antenna power configuration table and the reference exposure ratio configuration table, according to the reference transmission power P of the antenna in the single antenna power configuration table, R , and the reference exposure ratio ER of the antenna in the reference exposure ratio configuration table, the limited transmission power P of the antenna can be calculated L =P R / ER.

[0195] In some embodiments, the electronic device further stores antenna position relationship data. It should be understood that the antenna position relationship data may also be stored in the memory of the electronic device in the form of a configuration table.

[0196] In a multi-antenna transmission scenario, the magnitude of the electromagnetic radiation of the electronic device 100 is also related to the position of the antennas transmitting the signal. When the antennas are close to each other, the electromagnetic radiation generated by the antennas will overlap with each other, and when the antennas are far away, the electromagnetic radiation generated by the antennas will not overlap with each other.

[0197] Figure 6 The schematic diagram of the electromagnetic radiation distribution of the electronic device 100 when the antennas at different positions transmit wireless signals at the same time is shown as an example. The darker the area where the antenna is located, the greater its SAR. Figure 6 (a) shows a schematic diagram of the electromagnetic radiation distribution generated by two antennas (antenna 1 and antenna 2) that are far apart when transmitting wireless signals at the same time. It can be seen that since antenna 1 and antenna 2 are far apart, the electromagnetic radiation generated by antenna 1 and antenna 2 will not be superimposed on each other or the superimposed electromagnetic radiation is small (less than the larger value in SAR when antenna 1 or antenna 2 transmits wireless signals alone), so in this scenario, the maximum SAR is equivalent to the larger value in SAR when antenna 1 and antenna 2 transmit wireless signals alone. Figure 6(b) shows a schematic diagram of the electromagnetic radiation distribution generated by two antennas (antenna 2 and antenna 3) when two antennas with a relatively close distance transmit wireless signals at the same time. It can be seen that since antenna 2 and antenna 3 are relatively close, the electromagnetic radiation generated by antenna 2 and antenna 3 will be superimposed on each other, and the superimposed electromagnetic radiation is relatively large (greater than the larger value in SAR when antenna 1 or antenna 2 transmits wireless signals alone). Therefore, in this scenario, the maximum SAR value is greater than the larger value in SAR when antenna 1 or antenna 2 transmits wireless signals alone, and is less than the sum of the SARs generated by the two antennas when antenna 1 and antenna 2 transmit signals simultaneously.

[0198] Then, in a multi-antenna transmission scenario, the electronic device 100 can determine whether to use the reference transmission power P of each antenna configuration in a single antenna configuration scenario based on the position relationship of each antenna. R , or reduce the transmit power of each antenna.

[0199] In some embodiments, the antenna position relationship table may include the position relationship between each antenna, and the position relationship may be close or far away, or the position relationship may be different distance levels, for example, a first distance, a second distance, wherein the first distance is greater than the second distance, or the antenna position relationship table may include the distance between each antenna, for example, 1 cm. Table 5 exemplarily shows the antenna position relationship table of the electronic device 100.

[0200] Table 5

[0201] AntennaX Antenna Y Positional Relationship Antenna 1 Antenna 2 keep away Antenna 1 Antenna 3 keep away Antenna 2 Antenna 3 near

[0202] It is understandable that Table 5 only exemplifies the positional relationship between the antennas in the electronic device 100. In other embodiments of the present application, the antenna positional relationship can also be expressed in other ways. For example, the positional relationship of the antennas is represented by a set. Set 1 includes antenna 2 and antenna 3, and set 2 includes antenna 1. The radiation between the antennas in the set will produce a superposition effect, and the radiation between the antennas between the sets will not produce a superposition effect, that is, antenna 2 is close to antenna 3, and antenna 2 and antenna 3 are both far away from antenna 1. The embodiment of the present application does not limit the definition of the positional relationship of the antennas. In addition, the antenna position relationship table can also be expressed as a radiation hotspot position relationship table, and the embodiment of the present application does not limit this name.

[0203] The electronic device may allocate the exposure ratios of the antennas using different exposure ratio allocation strategies according to the positional relationship between the antennas.

[0204] Exposure ratio allocation strategies can include but are not limited to the following:

[0205] 1) Average exposure ratio of each antenna

[0206] At this time, the exposure ratios of the antennas are equal. Specifically, when TER of the electronic device 100 is X, and the number of the plurality of antennas is Y, the exposure ratios of the antennas are: X / Y.

[0207] 2) Prioritize exposure ratio

[0208] The electronic device 100 may preferentially ensure that the exposure ratio of a certain antenna is equal to or close to the reference exposure ratio of the antenna in the reference exposure ratio configuration table to ensure that the communication quality of the antenna is in the best state, and then allocate the remaining exposure ratios to other antennas.

[0209] 3) Allocate exposure ratio according to business type

[0210] The service types may include voice service, data service, etc.

[0211] In some embodiments, the electronic device 100 may give priority to satisfying the exposure ratio of the antenna transmitting the data service signal to ensure the communication quality of the data transmission of the electronic device 100 .

[0212] 4) Allocate exposure ratios according to exposure ratio values

[0213] The electronic device 100 may determine the exposure ratio of each antenna in a multi-antenna transmission scenario according to the ratio between the reference exposure ratios of each antenna in the reference exposure ratio configuration table.

[0214] For example, there is a situation where antennas 1-3 are close to each other in a multi-antenna transmission scenario, and the reference exposure ratio of each antenna in the reference exposure ratio configuration table is a:b:c. When TER of the electronic device 100 is X, the adjusted exposure ratio of antenna 1 is X*a / (a+b+c), the exposure ratio of antenna 2 is X*b / (a+b+c), and the exposure ratio of antenna 3 is X*c / (a+b+c).

[0215] 5) Allocate exposure ratio according to signal strength

[0216] Specifically, the exposure ratio allocated to the antenna with a strong signal may be smaller than the exposure ratio allocated to the antenna with a weak signal. In this way, in a multi-antenna transmission scenario, the antenna with a weaker signal can obtain a larger transmission power than other antennas with stronger signals, thereby avoiding signal interruption of the antenna with a weaker signal in a multi-antenna transmission scenario.

[0217] It is understandable that when the electronic device 100 allocates the exposure ratio of each antenna, the electronic device 100 can use one or more exposure ratio allocation strategies to calculate the exposure ratio of each antenna. For example, the electronic device 100 can first allocate the exposure ratio of a certain antenna according to the priority allocation exposure ratio, and then the other antennas can share the remaining exposure ratio according to the allocation strategy of averaging the exposure ratio of each antenna. In addition, in the embodiment of the present application, the electronic device 100 may also include other exposure ratio allocation strategies, which are not limited in the embodiment of the present application.

[0218] During multi-antenna transmission, for multiple antennas that are close to each other, the electronic device 100 can adjust the exposure ratio of each antenna according to the exposure ratio allocation strategy, so that the sum of the exposure ratios of each antenna TER is less than or equal to 1, ensuring that the impact of the electromagnetic radiation of the electronic device 100 on the human body is within a safe range. For multiple antennas that are far away, the electronic device 100 can also adjust the exposure ratio of each antenna according to the exposure ratio allocation strategy, and the sum of the exposure ratios of each antenna TER can be greater than or equal to 1. In this way, the electronic device 100 can dynamically adjust the transmission power of the multiple antennas that are far away. For example, when antenna 1 and antenna 2 are far away, and the radiation superposition between antenna 1 and antenna 2 is small, the electronic device 100 can allocate the exposure ratio of antenna 1 and antenna 2 according to the signal strength. When the signal of antenna 1 is weaker than that of antenna 2, the electronic device 100 can adjust the exposure ratio of antenna 1 to be greater than the exposure ratio of antenna 2, so that antenna 1 can transmit signals with a larger transmission power to ensure the communication performance of the antenna.

[0219] After the electronic device 100 obtains the adjusted exposure ratio ER' of each antenna, the electronic device 100 can adjust the exposure ratio ER' according to the adjusted exposure ratio ER' and the reference transmit power P in the single antenna power configuration table. R And the reference exposure ratio ER in the reference exposure ratio configuration table, calculate the antenna's transmission power P.

[0220] Since the power (unit: mW) is proportional to the exposure ratio, the electronic device 100 can calculate the transmission power P of the antenna according to Formula 5.

[0221]

[0222] Among them, ER is the reference exposure ratio in the reference exposure ratio configuration table, ER' is the adjusted exposure ratio calculated according to the exposure ratio allocation strategy, and P R is the reference transmit power in the single antenna power configuration table, and P is the final adjusted transmit power.

[0223] It is understandable that in a multi-antenna transmission scenario, if there is a single antenna that is far away from other antennas, the antenna can use the reference transmission power of P in the single-antenna transmission scenario. Rto transmit a signal.

[0224] In some embodiments, the electronic device may also calculate the instantaneous transmission power of the antenna according to the adjusted antenna transmission power P by using a time averaging algorithm.

[0225] The adjusted transmission power P calculated by the electronic device 100 can be the average transmission power of the antenna. Then, during the actual signal transmission by the antenna, the instantaneous value of the actual transmission power can be higher than the average transmission power, or lower than the average transmission power. It is sufficient that the average value of the actual transmission power within a period of time (for example, 6 minutes) does not exceed the adjusted transmission power P.

[0226] Figure 7 The figure shows the relationship between the actual transmission power and the adjusted transmission power P in the process of the electronic device 100 controlling the transmission power by using the time averaging algorithm. Figure 7 It can be seen that in the time period 0-t1, the instantaneous value of the actual transmission power of the electronic device 100 is P max In order to control the average value of the transmission power to be less than or equal to the transmission power P, the electronic device 100 will reduce the actual transmission power by a certain value, such as by 3dB, and transmit the signal at a lower transmission power, which may refer to the reserved power P. preserve After that, the electronic device 100 can increase the transmission power again and continue to transmit signals at a higher transmission power. In this way, the electronic device transmits signals with a fluctuating transmission power, so that the average value of the actual transmission power is less than or equal to the transmission power P. It can be seen that when the average value of the actual transmission power is less than or equal to the transmission power P, the actual power area is less than or equal to the average power area.

[0227] In summary, when the electronic device 100 uses the time averaging algorithm to adjust the transmission power, the electronic device 100 needs to set a reserved power P preserve , the reserved power P preserve The reserved power P is smaller than the transmit power P, and the difference between the transmit power P and the transmit power P is a fixed value, such as 3dBm. preserve The electronic device 100 can reduce the transmission power after transmitting at a higher power, so that the average value of the actual transmission power does not exceed the transmission power P, thereby ensuring the safety of the user. In actual situations, when the electronic device uses the time averaging algorithm to adjust the transmission power and sets the reserved power P preserve When the power of the antenna is too high, the fluctuation range of the transmission power of the antenna will be too large, affecting the stability of the communication process. preserve , limiting the maximum value of the actual transmission power, thereby ensuring that the electronic device 100 does not transmit signals with an excessively large transmission power, thereby maintaining the stability of communication.

[0228] In an embodiment of the present application, in a multi-antenna concurrent scenario, due to the different distances between antennas, the electronic device 100 can determine the transmission power of the antenna according to different strategies.

[0229] In a specific implementation, when the electronic device 100 is in a multi-antenna transmission scenario, the electronic device 100 can determine, based on the distance between any two antennas, which strategy the two antennas use to adjust the respective transmission powers of the two antennas.

[0230] The strategy is used to determine the transmit power of the antenna, and the strategy may include but is not limited to the following two situations:

[0231] 1) Determine the transmit power of each antenna directly according to the configuration table or preset value

[0232] The configuration table may refer to a single antenna power configuration table. In this case, the electronic device 100 may transmit the antenna according to the reference transmit power P in the single antenna power configuration table. R The configuration table may also refer to a limited transmission power configuration table. In this case, the electronic device 100 may determine the transmission power of each antenna according to the limited transmission power P in the limited transmission power configuration table. L Determine the transmit power of each antenna. The configuration table may also be a single antenna exposure ratio configuration table. The electronic device 100 configures the exposure ratio for each antenna according to the exposure ratio in the single antenna exposure ratio configuration table. The transmit power of each antenna may be calculated based on the exposure ratio and the single antenna limited transmit power. Alternatively, the electronic device 100 may preset a preset power value in advance, which is less than or equal to the limited transmit power P of all antennas. L , the electronic device 100 can determine the transmit power of the antenna according to the preset power value. For a specific description of the electronic device 100 directly determining the transmit power of the antenna according to the configuration table or the preset value, please refer to the relevant description of the power adjustment strategy in the subsequent method embodiment.

[0233] For example, when the distance between the two antennas is greater than or equal to distance level 1, it can be considered that the superposition of the radiation of the two antennas is weak, and the electronic device 100 can directly determine the transmission power of each antenna according to the configuration table or preset value.

[0234] 2) Calculate the antenna transmission power according to the exposure ratio allocation strategy

[0235] The electronic device 100 may calculate the exposure ratios of the antennas according to the exposure ratio allocation strategy.

[0236] The exposure ratio allocation strategy includes: allocating exposure ratios to each antenna equally, allocating exposure ratios according to a certain proportional coefficient, etc. Furthermore, the electronic device may also allocate exposure ratios preferentially according to service types, and / or allocate exposure ratios according to signal strength.

[0237] For example, when the distance between two antennas is less than distance level 1, it can be considered that the two antennas are close to each other, and the degree of radiation overlap of the two antennas is large. The exposure ratio allocation strategy can be used to calculate the transmission power of the antennas.

[0238] Electronic devices can avoid manually configuring the transmission power of each antenna in the dual-antenna concurrent scenario by pre-judging the positional relationship between antennas in the dual-antenna concurrent state and adopting different strategies to configure the transmission power of the dual antennas that transmit signals. This can ensure that the radiation index does not exceed the regulatory value and at the same time ensure the communication quality.

[0239] Furthermore, when the electronic device 100 includes multiple antennas (more than two) and is in a multi-antenna transmission scenario, the electronic device 100 can determine the power values ​​of the two antennas based on the distance between any two antennas. Finally, the electronic device 100 determines the minimum power value of the antenna as the transmission power of the antenna. In this way, it is ensured that the antenna adjusts the transmission power according to different strategies at different distances, and that the final transmission power of the antenna can keep the user within a safe radiation range.

[0240] In some embodiments, when the distances between antennas are different, the electronic device 100 may determine the transmit power of the antennas according to different exposure ratio allocation strategies.

[0241] Figure 8 The principle that the electronic device 100 determines the transmission power of two antennas according to the distance between the antennas is exemplarily shown.

[0242] like Figure 8 As shown, when the distance between the two antennas is at distance level 1, the electronic device 100 can use exposure ratio allocation strategy 1 to calculate the transmission power of the two antennas; when the distance between the two antennas is at distance level 2, the electronic device 100 can use exposure ratio allocation strategy 2 to calculate the transmission power of the two antennas; and so on. When the distance between the two antennas is at distance level N, the electronic device 100 can use exposure ratio allocation strategy N to calculate the transmission power of the two antennas, wherein distance levels 1, 2, ..., N represent different distances between the two antennas, and the electronic device 100 can view the distance between the two antennas through the antenna position relationship table, and exposure ratio allocation strategies 1, 2, ..., N represent different exposure ratio allocation strategies.

[0243] Among them, the exposure ratio allocation strategy may include but is not limited to the following methods: allocating exposure ratios evenly to each antenna, allocating exposure ratios preferentially, allocating exposure ratios according to service types, allocating exposure ratios according to a certain coefficient, allocating exposure ratios according to signal strength, etc.

[0244] For example, when the electronic device 100 uses antenna 1 and antenna 2 to transmit signals at the same time, the electronic device 100 can preset a total exposure ratio TER. When the distance between antenna 1 and antenna 2 is distance level 1, the electronic device 100 can determine the exposure ratio of antenna 1 and antenna 2 according to the exposure ratio allocation strategy of allocating exposure ratios according to signal strength. When the distance between antenna 1 and antenna 2 is distance level 2, the electronic device 100 determines the exposure ratio of antenna 1 and antenna 2 according to the average allocation exposure ratio, and then calculates the transmission power of antenna 1 and antenna 2 according to the exposure ratio.

[0245] Combine the following Fig. 9 A method flow chart of the transmission power adjustment method provided in an embodiment of the present application is introduced.

[0246] like Fig. 9 As shown, the method includes:

[0247] S101: Identify a multi-antenna transmission scenario.

[0248] Multi-antenna transmission scenarios include:

[0249] 1) The electronic device 100 is currently using multiple antennas to transmit signals simultaneously.

[0250] 2) The electronic device 100 is about to use multiple antennas to transmit signals simultaneously within the first time.

[0251] When electronic devices use multiple antennas to transmit signals simultaneously, the following situations may occur:

[0252] 1) The electronic device 100 receives an instruction from a network device to operate multiple antennas.

[0253] The network device may refer to a base station, a server, etc. For example, the network device may determine whether to send an instruction to operate multiple antennas to the electronic device 100 according to the strength of the signal sent by the electronic device 100.

[0254] 2) The electronic device 100 uses different wireless communication technologies to communicate with the network or other devices at the same time

[0255] Wireless communication technologies mainly include: Wi-Fi, Bluetooth, NFC, GNSS technology, etc. The electronic device 100 may include multiple antennas corresponding to different wireless communication technologies. For example, antenna 1 of the electronic device 100 may be a Wi-Fi antenna and antenna 2 may be a Bluetooth antenna.

[0256] The electronic device 100 can directly communicate with a network or other devices using different wireless communication technologies. For example, the electronic device 100 can use antenna 1 to establish a Wi-Fi connection with an electronic device 1 (such as a mobile phone, a computer, etc.), use antenna 2 to establish a Bluetooth connection with an electronic device 2 (such as a Bluetooth headset, a smart bracelet, a smart watch), and so on.

[0257] Alternatively, the electronic device 100 can use multiple antennas to transmit signals when running multiple applications at the same time. In this case, different applications use different wireless communication technologies. For example, while the electronic device 100 is running an office application to upload files, it is running a phone application to make a call. In this case, the electronic device 100 can use antenna 1 to send signals to the server corresponding to the office application, and use antenna 2 to send signals to the base station to implement call services with other devices.

[0258] Specifically, the electronic device 100 can identify whether the electronic device 100 uses multiple antennas to transmit wireless signals through a modem processor. The modem processor is used to control the signal transmission process of the antenna and adjust the transmission power of the antenna. When the modem processor controls the signal transmission of multiple antennas at the same time, the electronic device 100 can determine that the current electronic device 100 is in a multi-antenna transmission scenario.

[0259] S102: Obtain a positional relationship between multiple antennas.

[0260] The plurality of antennas may include antennas that are currently transmitting signals or are about to transmit signals.

[0261] Specifically, the electronic device 100 can obtain the positional relationship between the antennas from the antenna position relationship table. The positional relationship of the antennas can be close or far away, or a specific distance between the antennas, or the positional relationship can be different distance levels, for example, a first distance, a second distance. For details about the antenna position relationship table, refer to the contents shown in Table 5.

[0262] In some embodiments, the antenna position relationship table may be stored in the internal memory 121 (eg, NVM) of the electronic device 100 .

[0263] S103: Use different strategies to configure power for different antennas.

[0264] The electronic device 100 determines the distance between the antennas according to the positional relationship between the multiple antennas.

[0265] When one antenna is far away from other antennas, the electronic device 100 may transmit signals according to the power adjustment strategy.

[0266] The antenna is far away from other antennas, which may mean that the position relationship between the antenna and other antennas is "far away", or the distance between the antenna and other antennas is greater than a certain threshold or a certain distance level. In this case, when the antenna transmits a signal, its electromagnetic radiation will not overlap with the electromagnetic radiation of other antennas.

[0267] The power adjustment strategy can be used by the electronic device 100 to obtain the transmit power of the antenna. The power adjustment strategy is a partial strategy used by the electronic device 100 to adjust the transmit power of the antenna. These partial strategies are applicable to antennas whose radiation does not have a superposition effect with the radiation of other antennas, or whose radiation superposition effect is small. The power adjustment strategy includes but is not limited to the following:

[0268] 1) The electronic device 100 transmits with the reference transmission power P of the antenna R Transmitting a signal

[0269] That is, the electronic device 100 can transmit a signal with a power value in the single antenna power configuration table, which power value does not exceed the limited transmission power P in the regulatory requirements. L , ensuring that users are within a safe radiation range.

[0270] 2) The electronic device 100 transmits a signal at a preset power value

[0271] That is, the electronic device 100 may preset a preset power value in advance, which is less than or equal to the limited transmission power P of all antennas. L When the antenna needs to transmit a signal according to the power adjustment strategy, the electronic device 100 does not need to look up the power value of the antenna from the single antenna power configuration table, which reduces the time for the electronic device 100 to determine the transmission power of the antenna and speeds up the speed at which the antenna transmits signals.

[0272] 3) The electronic device 100 transmits with the limited transmission power P of the antenna L Transmitting a signal

[0273] That is, the electronic device 100 can transmit a signal with a power value in the limited transmission power configuration table, which is the limited transmission power P required by the regulations. L , ensuring that users are within a safe radiation range and increasing the transmission power as much as possible.

[0274] 4) The electronic device 100 adjusts the transmission power of the antenna according to the exposure ratio

[0275] Specifically, the electronic device 100 can preset a maximum exposure ratio so that the exposure ratio of a single antenna and the total exposure ratio of multiple antennas are less than or equal to the maximum exposure ratio. At this time, the electronic device 100 can be based on the preset maximum exposure ratio and the reference transmit power P of the antenna. R, calculate the transmission power of the antenna with reference to the exposure ratio ER, and transmit the signal according to the transmission power. In this way, the electronic device 100 can preferentially meet the configuration requirements of the electronic device 100, so that the antenna can transmit the signal according to the preset exposure ratio.

[0276] For example, when the preset maximum exposure ratio of the electronic device 100 is R1, the antenna 1 is far away from other antennas, the reference transmission power of the antenna 1 is P1, and the reference exposure ratio is R2, then the transmission power of the antenna 1 is R2 / R1*P1.

[0277] It is understandable that the power adjustment strategy is not limited to the several methods mentioned above, and the embodiments of the present application do not limit this.

[0278] It should be understood that in some embodiments, there is no limit to the number of antennas that are far away from other antennas in the electronic device 100. For example, in a scenario where the electronic device 100 has three antennas, and the distance between any two antennas exceeds the distance threshold, the three antennas are all configured with power according to the power adjustment strategy.

[0279] When there are antennas at a relatively close distance, it is determined whether a reference total exposure ratio TER between the antennas at a relatively close distance is less than or equal to 1.

[0280] The antennas that are close to each other include more than two antennas, and these antennas that are close to each other may refer to the positional relationship between these antennas being "close", or the distance between these antennas being less than a certain threshold or a certain distance level. In this case, the electromagnetic radiation generated between these antennas will be superimposed on each other. The electronic device 100 needs to measure whether the electromagnetic radiation of these antennas will exceed the standard when transmitting signals together based on the reference total exposure ratio TER. It should be understood that in some embodiments, there may be antennas that are close to each other while there are antennas that are far away from other antennas. For example, the electronic device 100 uses three antennas to transmit signals, and antenna 1 is far away from antenna 2 and antenna 3. The electronic device configures the transmission power of antenna 1 according to the power adjustment strategy. The distance between antenna 2 and antenna 3 is close, and the electronic device determines whether the reference total exposure ratio TER between antennas 2 and 3 is less than or equal to 1 to configure the transmission power of antennas 2 and 3.

[0281] The reference total exposure ratio TER is the sum of the reference exposure ratios ER of the antennas at a relatively close distance. Specifically, the electronic device 100 can obtain the reference exposure ratio ER of the antenna from the reference exposure ratio configuration table, or calculate the reference exposure ratio ER of the antenna according to the single antenna configuration table and the limited transmission power configuration table.

[0282] If the reference total exposure ratio TER between the antennas at closer distances is less than or equal to 1, the electronic device 100 transmits the antenna at a reference transmission power P RThe signal is transmitted or the signal is transmitted at a transmission power determined according to a preset exposure ratio.

[0283] When the reference total exposure ratio is less than or equal to 1, it means that the electronic device 100 transmits at the reference transmission power P R When transmitting a signal, the electromagnetic radiation of the electronic device 100 will not exceed the standard, so the electronic device 100 can be based on the reference transmission power P R Transmit a signal.

[0284] Alternatively, the electronic device 100 may pre-set a total exposure ratio TER, where TER≤1, and the electronic device 100 may allocate exposure ratios of antennas that are closer to each other according to the pre-set total exposure ratio TER, and then calculate the transmit power of these antennas according to the exposure ratios allocated to each antenna. Specifically, the electronic device 100 may use an exposure ratio configuration strategy to allocate exposure ratios of each antenna. The exposure ratio allocation strategy may include but is not limited to the following methods: allocating exposure ratios evenly to each antenna, allocating exposure ratios preferentially, allocating exposure ratios according to service types, allocating exposure ratios according to a certain coefficient, allocating exposure ratios according to signal strength, and the like.

[0285] When the reference total exposure ratio TER is greater than 1, it means that when the electronic device 100 transmits a signal at the reference transmission power, the electromagnetic radiation of the electronic device 100 will exceed the standard, and the electronic device 100 needs to adjust the transmission power of the antenna at a closer distance. The electronic device 100 can adjust the transmission power of the antenna at a closer distance so that the total exposure ratio TER of the antenna at a closer distance is less than or equal to 1, and transmit the signal at the adjusted transmission power.

[0286] For these antennas that are relatively close, the electronic device 100 can adjust the exposure ratio of each antenna through an exposure ratio allocation strategy, and then the electronic device 100 allocates the exposure ratio of each antenna according to the adjusted exposure ratio ER', the reference exposure ratio ER, and the reference transmission power P R To obtain the adjusted transmission power P. For a specific description of the exposure ratio allocation strategy, please refer to the above content.

[0287] Specifically, the electronic device 100 can combine the antenna reference transmission power P R , adjust the exposure ratios ER and ER' before and after, and calculate the antenna transmission power P according to the above formula 5.

[0288] The following is a specific example to describe the process of adjusting the transmission power of the electronic device 100 according to the position relationship of the antennas. Assume that the electronic device 100 starts antennas 1-3 to transmit signals simultaneously. If the reference transmission power P of antennas 1-3 is RThe reference exposure ratios ER are 0.5, 0.5, and 0.8 respectively. The position relationship between antenna 1 and antenna 2 is "far away", the position relationship between antenna 1 and antenna 3 is "far away", and the position relationship between antenna 2 and antenna 3 is "close". For example, the position relationship between antennas 1-3 can be referred to Figure 6 If the content shown in (b) is shown in FIG. 1 , the electronic device 100 determines that the antenna 1 is far away from other antennas, and can determine the final transmission power of the antenna 1 as the reference transmission power P according to the power adjustment strategy. R , i.e. 120 mW. The electronic device 100 may preset the allowed total exposure ratio in advance. For example, when the allowed total exposure ratio TER of the electronic device 100 is 0.8, the position relationship between antenna 2 and antenna 3 is "close", the electronic device 100 adjusts the exposure ratios ER' of antenna 2 and antenna 3 to 0.4 and 0.4 respectively according to the exposure ratio allocation strategy of evenly allocating the exposure ratio. After that, the electronic device 100 calculates the final transmission power of antenna 2 as 0.4 / 0.5*140=112 mW and the final transmission power of antenna 3 as 0.4 / 0.8*160=80 mW according to formula 5.

[0289] In some embodiments, the electronic device 100 may use the transmit power P as the maximum transmit power of the corresponding antenna. In this way, the actual transmit power of the electronic device 100 is less than the transmit power P, thereby ensuring the safety of the user and improving the communication performance of each antenna in a multi-antenna transmission scenario.

[0290] In other embodiments, the electronic device 100 may use the transmit power P as the maximum average transmit power of the corresponding antenna. In this way, the instantaneous value of the actual transmit power of the electronic device 100 may be greater than the transmit power P, but the average transmit power over a period of time is less than or equal to the transmit power P. Specifically, the electronic device 100 may use a time averaging algorithm to adjust the transmit power of the antenna so that during the process of the electronic device 100 actually transmitting a signal, the average value of the actual transmit power of the antenna is less than or equal to the transmit power P. In this way, the electronic device 100 may dynamically adjust the size of the transmit power according to actual conditions. For example, when the signal of the antenna is weak due to the occlusion of the user's hand at a certain moment, the electronic device 100 may increase the transmit power of the antenna during this period of time to ensure the communication quality of the electronic device 100 as much as possible. At other times, the electronic device 100 may reduce the transmit power. In this way, from a period of time, the electronic device 100 will not have excessive radiation, and the safety of the user is still guaranteed.

[0291] It is understandable that the electronic device 100 may be configured with any two of the single antenna power configuration table, the limited transmission power configuration table, and the reference exposure ratio configuration table. When the electronic device 100 needs to use a certain parameter of the antenna (for example, the reference transmission power P R , limit the transmission power P L , reference exposure ratio ER), the electronic device 100 can obtain it through a stored configuration table, or calculate it according to two stored configuration tables. The electronic device 100 can store the configuration table in an internal memory 121 (eg, NVM) of the electronic device 100.

[0292] In some embodiments, the electronic device 100 may integrate the two configured configuration tables into one configuration table. For example, when the electronic device 100 is configured with a single antenna power configuration table and a reference exposure ratio configuration table, the single antenna power configuration table and the reference exposure ratio configuration table may be integrated into one configuration table, which may include the reference transmit power P of the antenna. R and the reference exposure ratio ER. Table 6 exemplarily shows part of the configuration table.

[0293] Table 6

[0294]

[0295] Among them, P R XY (X = 1, 2..., M, Y = 1, 2,..., N) is the reference transmit power P of antenna X in scenario Y R , RatioXY(X=1,2…,M,Y=1,2,…,N) is the reference exposure ratio ER of antenna X in scene Y.

[0296] Fig.10 A flow chart of a method for adjusting transmission power in a dual-antenna transmission scenario provided in an embodiment of the present application is shown.

[0297] S201: Obtain a first distance between a first antenna and a second antenna.

[0298] For example, see Figure 6 In (b), the first antenna and the second antenna may refer to any two antennas among the antenna 1, the antenna 2, and the antenna 3 in the electronic device 100. The first distance is the distance between the first antenna and the second antenna.

[0299] In some embodiments, the electronic device 100 may pre-store an antenna position relationship table, which is used to determine the distance between the first antenna and the second antenna. Specifically, the electronic device 100 may obtain the first distance between the first antenna and the second antenna according to the antenna position relationship table. For a specific description of the antenna position relationship table, see Table 5 and its related contents.

[0300] S202: Determine whether the first distance is greater than a first value.

[0301] Among them, the first value is a predetermined value. When the first distance is greater than the first value, the electronic device 100 can determine that the distance relationship between the first antenna and the second antenna is far away or far away. At this time, the radiation superposition effect of the first antenna and the second antenna is small. When the first distance is less than the first value, the electronic device 100 can determine that the distance relationship between the first antenna and the second antenna is close or close. At this time, the radiation superposition effect of the first antenna and the second antenna is large.

[0302] When the electronic device 100 determines that the first distance is greater than the first value, the electronic device 100 executes step S203; otherwise, the electronic device 100 executes step S204.

[0303] S203. If the first distance is greater than the first value, determine the first transmission power of the first antenna and determine the second transmission power of the second antenna, wherein the first transmission power is less than or equal to the first limit power, and the second transmission power is less than or equal to the second limit power, the first limit power is the maximum transmission power that complies with the electromagnetic exposure standard when the electronic device only uses the first antenna to transmit signals, and the second transmission power is the maximum transmission power that complies with the electromagnetic exposure standard when the electronic device only uses the second antenna to transmit signals.

[0304] The first limited power is the limited transmission power P of the first antenna. L , the second limited power is the limited transmission power P of the second antenna L .

[0305] In some embodiments, the electronic device 100 may store a first configuration table including a first transmission power and a second transmission power, and the electronic device 100 may determine the first transmission power of the first antenna and the second transmission power of the second antenna according to the first configuration table.

[0306] The first configuration table may be a single antenna power configuration table, and the first transmit power and the second transmit power are the reference transmit power P of the first antenna and the second antenna, respectively. R For a detailed description of the single antenna configuration table, please refer to the aforementioned Table 2 and its related contents.

[0307] The first configuration table may be a limited transmit power configuration table, where the first transmit power and the second transmit power are respectively the limited transmit powers P of the first antenna and the second antenna. L For a detailed description of the table for limiting the transmission power configuration, please refer to the aforementioned Table 3 and its related contents.

[0308] That is, when the distance between the first antenna and the second antenna is far, the electronic device 100 may adjust the transmission power of the first antenna and the second antenna according to the power value pre-stored in the electronic device 100 .

[0309] In some other embodiments, the electronic device 100 may store a second configuration table, which includes a first reference exposure ratio and a second reference exposure ratio. The electronic device 100 may determine the first transmission power of the first antenna based on the first reference exposure ratio, and determine the second transmission power of the second antenna based on the second reference exposure ratio, wherein the first transmission power is the product of the first limiting power and the first reference exposure ratio, and the second transmission power is the product of the second limiting power and the second reference exposure ratio.

[0310] The second configuration table may refer to a reference exposure ratio configuration table, and the electronic device 100 may calculate the transmit power of the first antenna and the second antenna according to the reference exposure ratio stored in the reference exposure ratio configuration table, wherein the reference exposure ratio is proportional to the transmit power of the antenna. For a specific description of the reference exposure ratio configuration table, reference may be made to the aforementioned Table 4 and its related contents.

[0311] That is, when the distance between the first antenna and the second antenna is far, the electronic device 100 can calculate the transmission power of the first antenna and the second antenna according to the pre-stored antenna exposure ratio.

[0312] In other embodiments, when the electronic device 100 pre-stores the transmission power and exposure ratio of the antenna, the electronic device 100 can also adjust the exposure ratio of the first antenna and the exposure ratio of the second antenna according to the exposure ratio allocation strategy, and then calculate the adjusted transmission power of the antenna according to the relationship that the exposure ratio is proportional to the transmission power. Among them, the exposure ratio allocation strategy includes but is not limited to average allocation, priority allocation, allocation according to service type, allocation according to signal strength, or allocation according to exposure ratio value, etc.

[0313] That is to say, when the distance between the first antenna and the second antenna is far, the electronic device 100 may not transmit signals according to the pre-stored power value, and may readjust the transmission power of the antenna so that the antenna can dynamically adjust the transmission power according to actual conditions, such as signal strength and service type.

[0314] S204. If the first distance is less than the first value, determine the first transmission power of the first antenna, and determine the second transmission power of the second antenna, the first transmission power corresponds to a first exposure ratio, the second transmission power corresponds to a second exposure ratio, the first exposure ratio is a ratio of the first transmission power to the first limit power, and the second exposure ratio is a ratio of the second transmission power to the second limit power, wherein the sum of the first exposure ratio and the second exposure ratio is less than or equal to 1.

[0315] Specifically, the electronic device 100 may determine the first exposure ratio and the second exposure ratio according to an exposure ratio allocation strategy, wherein the exposure ratio allocation strategy includes one or more of the following: average allocation, priority allocation, allocation according to service type, allocation according to signal strength, or allocation according to exposure ratio value, etc. In addition, the electronic device 100 may preset a total exposure ratio of the first antenna and the second antenna, and the total exposure ratio is the sum of the first exposure ratio and the second exposure ratio.

[0316] In some embodiments, the electronic device 100 may determine a first reference exposure ratio and a second reference exposure ratio according to a prestored configuration table, wherein the first reference exposure ratio is a ratio of a first reference power to a first limiting power, and the second reference exposure ratio is a ratio of a second reference power to a second limiting power. If the sum of the first reference exposure ratio and the second reference exposure ratio is less than or equal to 1, the electronic device 100 may determine the first reference power as the first transmission power and the second reference power as the second transmission power.

[0317] The electronic device 100 may pre-store a single antenna configuration table and a limited transmission power configuration table, so that the electronic device 100 may obtain the first reference power and the second reference power from the single antenna configuration table, and obtain the first limited power and the second limited power from the limited transmission power configuration table. Then, the electronic device 100 may determine the first reference exposure ratio according to the ratio of the first reference power to the first limited power, and determine the second reference exposure ratio according to the ratio of the second reference power to the second limited power.

[0318] Alternatively, the electronic device 100 may pre-store a single antenna configuration table and a reference exposure ratio configuration table, so that the electronic device 100 obtains the first reference power and the second reference power from the single antenna configuration table, and obtains the first reference exposure ratio and the second reference exposure ratio from the reference exposure ratio configuration table.

[0319] Alternatively, the electronic device 100 may pre-store a limited transmission power configuration table and a reference exposure ratio configuration table, so that the electronic device 100 obtains the first limited power and the second limited power from the limited transmission power configuration table, and obtains the first reference exposure ratio and the second reference exposure ratio from the reference exposure ratio configuration table. Then, the electronic device 100 may determine the first reference power according to the product of the first limited power and the first reference exposure ratio, and determine the second reference power according to the product of the second limited power and the second reference exposure ratio.

[0320] S205: The first antenna transmits a signal according to a first transmission power, and the second antenna transmits a signal according to a second transmission power.

[0321] In some embodiments, when the electronic device 100 uses the first antenna and the second antenna to transmit a signal, the transmission power of the first antenna may be less than or equal to the first transmission power, or the average transmission power of the first antenna in the first time is less than or equal to the first transmission power, and the first time is less than or equal to the time specified by the electromagnetic exposure standard. In addition, the transmission power of the second antenna may also be less than or equal to the second transmission power, or the average transmission power of the second antenna in the first time is less than or equal to the second transmission power, and the first time is less than or equal to the time specified by the electromagnetic exposure standard.

[0322] That is, the actual transmission power of the first antenna and / or the second antenna may not exceed the first transmission power and the second transmission power determined by the electronic device 100, or the average transmission power of the first antenna and / or the second antenna over a period of time may not exceed the first transmission power and the second transmission power determined by the electronic device 100. In other words, the first transmission power and the second transmission power may be the maximum transmission power of the antenna determined by the electronic device 100, or the maximum average transmission power of the antenna determined by the electronic device 100.

[0323] When the electronic device 100 determines that the first transmission power and the second transmission power are the maximum average transmission powers, the electronic device 100 can use a time averaging algorithm to ensure that the average value of the transmission power of the first antenna within a period of time does not exceed the first transmission power, and the average value of the transmission power of the second antenna within a period of time does not exceed the second transmission power.

[0324] Combine the following Fig.11 A schematic diagram of the structure of the transmission power adjustment device provided in an embodiment of the present application is introduced.

[0325] like Fig.11 As shown, the transmission power adjustment device may include: an identification module 301 , a storage module 302 , an adjustment module 303 , and a transmission module 304 .

[0326] Among them, the identification module 301 can be used to obtain the distance between antennas in a multi-antenna transmission scenario. In addition, before obtaining the distance between the antennas, the identification module 301 is also used to identify whether the electronic device 100 is in a multi-antenna transmission scenario, that is, whether the electronic device 100 uses multiple antennas to transmit signals, or is about to use multiple antennas to transmit signals in the first time. When the identification module 301 determines that the electronic device 100 is in a multi-antenna transmission scenario, the distance between these antennas is obtained from the storage module 302 according to the antennas that need to transmit signals or are transmitting signals.

[0327] The storage module 302 stores an antenna position relationship table, as well as any two configuration tables among a single antenna power configuration table, a reference exposure ratio configuration table, and a limited transmission power configuration table. In addition, the storage module 302 may also store a total exposure ratio, and the electronic device 100 may adjust the exposure ratio of each antenna according to the total exposure ratio, and then calculate the transmission power of each antenna. The storage module 302 may obtain the reference transmission power P of these antennas from the antenna position relationship table, as well as any two configuration tables among a single antenna power configuration table, a reference exposure ratio configuration table, and a limited transmission power configuration table according to the indication information of the antenna sent by the identification module 301. R , reference exposure ratio ER, position relationship, and obtain the reference transmission power P of the antenna R , reference exposure ratio ER, and position relationship are sent to the adjustment module 303.

[0328] The adjustment module 303 can determine whether the electronic device 100 needs to adjust the exposure ratio of the antenna according to the position relationship of the antenna and the reference exposure ratio ER of the antenna. Specifically, when there is a single antenna that is far away from other antennas, the electronic device 100 can adjust the transmission power according to the power adjustment strategy, for example, adjusting the transmission power of the antenna to the reference transmission power P R When there are multiple antennas that are close to each other, the electronic device 100 can determine whether to adjust the exposure ratio of the antennas according to whether the reference total exposure TER of these antennas is less than 1. When TER≤1, the electronic device 100 can adjust the transmit power according to the power adjustment strategy, for example, adjusting the transmit power of the antenna to the reference transmit power P R When TER>1, the electronic device 100 adjusts the exposure ratios of the multiple antennas according to the exposure ratio configuration strategy, and calculates the antenna transmission power according to the adjusted exposure ratio. Afterwards, the electronic device 100 sends the determined antenna transmission power to the transmission module 304.

[0329] The transmitting module 304 may be used to transmit a signal according to the transmit power finally determined by each antenna, or the transmitting module 204 may transmit a signal according to a time averaging algorithm, using the transmit power finally determined by each antenna as the average transmit power, to ensure that within a period of time, the average value of the actual transmit power is less than or equal to the transmit power.

[0330] The various implementation modes of the present application can be combined arbitrarily to achieve different technical effects.

[0331] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state disk (SSD)), etc.

[0332] Those skilled in the art can understand that to implement all or part of the processes in the above-mentioned embodiments, the processes can be completed by computer programs to instruct related hardware, and the programs can be stored in computer-readable storage media. When the programs are executed, they can include the processes of the above-mentioned method embodiments. The aforementioned storage media include: ROM or random access memory RAM, magnetic disk or optical disk and other media that can store program codes.

[0333] In short, the above description is only an embodiment of the technical solution of the present invention, and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made according to the disclosure of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for adjusting transmission power, characterized in that: The electronic device includes a first antenna and a second antenna, and the method includes: The distance between the first antenna and the second antenna is a first distance, the transmission power of the first antenna is a first transmission power, and the transmission power of the second antenna is a second transmission power; When the first distance is greater than a first value, the first transmission power is less than or equal to a first limit power, and the second transmission power is less than or equal to a second limit power; the first limit power is a maximum transmission power that complies with electromagnetic radiation standards when the electronic device uses only the first antenna to transmit signals; the second limit power is a maximum transmission power that complies with electromagnetic radiation standards when the electronic device uses only the second antenna to transmit signals; When the first distance is less than the first value, a sum of a first exposure ratio corresponding to the first transmit power and a second exposure ratio corresponding to the second transmit power is less than or equal to 1, the first exposure ratio is a ratio of the first transmit power to the first limit power, and the second exposure ratio is a ratio of the second transmit power to the second limit power; The electronic device stores a second configuration table, the second configuration table includes a first reference exposure ratio and a second reference exposure ratio, and when the first distance is greater than the first value, the method includes: The electronic device determines a first transmission power of the first antenna according to the first reference exposure ratio, and determines a second transmission power of the second antenna according to the second reference exposure ratio, wherein the first transmission power is the product of the first limit power and the first reference exposure ratio, and the second transmission power is the product of the second limit power and the second reference exposure ratio.

2. The method according to claim 1, characterized in that The average transmission power of the first antenna in the first time is less than or equal to the first transmission power, and the first time is less than or equal to the time specified by the electromagnetic exposure standard.

3. The method according to claim 1 or 2, characterized in that: The average transmission power of the second antenna in the first time is less than or equal to the second transmission power, and the first time is less than or equal to the time specified by the electromagnetic exposure standard.

4. The method according to claim 1 or 2, characterized in that: In the case where the first distance is less than a first value, the method comprises: The electronic device determines the first exposure ratio and the second exposure ratio according to an exposure ratio allocation strategy, wherein the exposure ratio allocation strategy includes one or more of the following: average allocation, priority allocation, allocation according to service type, allocation according to signal strength, or allocation according to exposure ratio value; The electronic device determines a first transmission power of the first antenna according to the first exposure ratio, and determines a second transmission power of the second antenna according to the second exposure ratio.

5. The method according to claim 4, characterized in that The electronic device presets a total exposure ratio of the first antenna to the second antenna, where the total exposure ratio is the sum of the first exposure ratio and the second exposure ratio.

6. The method according to claim 1, wherein when the first distance is smaller than the first value, the method comprises: The electronic device acquires the first reference exposure ratio and the second reference exposure ratio, wherein the first reference exposure ratio is a ratio of a first reference power to the first limit power, and the second reference exposure ratio is a ratio of a second reference power to the second limit power; the first reference power is less than or equal to the first limit power, and the second reference power is less than or equal to the second limit power; When the sum of the first reference exposure ratio and the second reference exposure ratio is less than or equal to 1, the electronic device determines the first transmit power by using the first reference power, and determines the second transmit power by using the second reference power.

7. The method according to claim 6, characterized in that The electronic device stores the first reference power and the second reference power, the first reference exposure ratio and the second reference exposure ratio; or, The electronic device stores the first reference power and the second reference power, the first limit power and the second limit power; or, The electronic device stores the first and second reference exposure ratios, the first limit power, and the second limit power.

8. The method according to claim 1 or 2, characterized in that: The electronic device pre-stores an antenna position relationship table, where the antenna position relationship table is used to determine the distance between the first antenna and the second antenna; The method comprises: The electronic device obtains a first distance between the first antenna and the second antenna according to the antenna position relationship table.

9. An electronic device, comprising: A memory, one or more processors, multiple applications, and one or more programs; wherein the one or more programs are stored in the memory; it is characterized in that when the one or more processors execute the one or more programs, the electronic device implements the method described in any one of claims 1 to 8.

10. A computer-readable storage medium comprising instructions, characterized in that: When the instructions are executed on an electronic device, the electronic device is enabled to execute the method according to any one of claims 1 to 8.

11. A transmission power adjustment device, characterized in that: The method comprises instructions, characterized in that when the instructions are executed on the adjustment device, the adjustment device is caused to execute the method according to any one of claims 1 to 8.

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