Method, apparatus and electronic device for adjusting antenna transmit power

Abstract

The application discloses an antenna transmission power adjustment method and device and electronic equipment, and belongs to the technical field of electronic equipment. The method is applied to the electronic equipment, and comprises the following steps: a probe signal is sent through a first ultra-bandwidth antenna; a first reflected signal of the probe signal is received through a second ultra-bandwidth antenna, and a second reflected signal of the probe signal is received through a third ultra-bandwidth antenna; position information of a human body relative to the electronic equipment is determined according to the first reflected signal and the second reflected signal; and the maximum transmission power of a target antenna is adjusted according to the position information.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment technology, and specifically relates to a method, apparatus and electronic equipment for adjusting antenna transmission power. Background Technology

[0002] Modern electronic devices are increasingly powerful, supporting a growing number of functions, a wider variety of sensors, and more advanced wireless technologies. Simultaneously, with the evolution of wireless communication devices, exemplified by smartphones, the impact of electromagnetic radiation emitted during device use on human health has garnered increasing public attention. To ensure the safe operation of wireless communication devices and protect the interests of users, governments and telecommunications regulatory bodies worldwide have stipulated that electromagnetic radiation must meet safety standards before being put into use; this is known as SAR (Specific Absorption Rate). SAR is the ratio of electromagnetic wave energy absorbed by wireless products such as mobile phones.

[0003] Currently, SAR sensors are deployed in electronic devices to detect the proximity of people and adjust the antenna power accordingly to reduce electromagnetic energy absorption. However, deploying SAR sensors not only increases hardware costs but also occupies space in electronic devices, affecting antenna layout. Summary of the Invention

[0004] The purpose of this application is to provide a method, apparatus, and electronic device for adjusting antenna transmission power, which can solve the problem that existing antenna power adjustment methods occupy the space of electronic devices and affect the antenna layout.

[0005] In a first aspect, embodiments of this application provide a method for adjusting antenna transmit power, applied to electronic devices, the method comprising:

[0006] The detection signal is transmitted through the first ultra-wideband antenna;

[0007] The first reflected signal of the detection signal is received by a second ultra-wideband antenna, and the second reflected signal of the detection signal is received by a third ultra-wideband antenna.

[0008] The position information of the human body relative to the electronic device is determined based on the first reflected signal and the second reflected signal;

[0009] Adjust the maximum transmit power of the target antenna based on the location information.

[0010] Secondly, embodiments of this application provide an antenna transmission power adjustment device, applied to electronic devices, the device comprising:

[0011] The transmitting module is used to transmit detection signals through the first ultra-wideband antenna;

[0012] The receiving module is configured to receive the first reflected signal of the detection signal through a second ultra-wideband antenna and the second reflected signal of the detection signal through a third ultra-wideband antenna.

[0013] The determining module is used to determine the position information of the human body relative to the electronic device based on the first reflected signal and the second reflected signal;

[0014] The power adjustment module is used to adjust the maximum transmit power of the target antenna according to the location information.

[0015] Thirdly, embodiments of this application provide an electronic device including a processor and a memory, wherein the memory stores programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the method described in the first aspect.

[0016] Fourthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0017] Fifthly, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect.

[0018] In a sixth aspect, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the method described in the first aspect.

[0019] In this embodiment, the electronic device transmits a detection signal via a first ultra-wideband antenna; receives a first reflected signal of the detection signal via a second ultra-wideband antenna; and receives a second reflected signal of the detection signal via a third ultra-wideband antenna. This allows for the determination of the human body's position relative to the electronic device based on the first and second reflected signals. The maximum transmit power of the target antenna is then adjusted based on the position information. Thus, antenna power adjustment can be achieved using only ultra-wideband antennas, avoiding the space occupied by SAR sensors on the electronic device and reducing the cost of deploying SAR sensors. Attached Figure Description

[0020] Figure 1 This is one of the flowcharts for adjusting the antenna transmit power according to an embodiment of this application;

[0021] Figure 2 This is one of the layout schematic diagrams of the ultra-wideband antenna according to an embodiment of this application;

[0022] Figure 3 This is a second schematic diagram of the layout of the ultra-wideband antenna according to an embodiment of this application;

[0023] Figure 4 This is a second flowchart of the antenna transmission power adjustment method according to an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the SAR detection cycle according to an embodiment of this application;

[0025] Figure 6 This is a structural block diagram of an antenna transmission power adjustment device according to an embodiment of this application;

[0026] Figure 7 This is a structural block diagram of an electronic device according to an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0029] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] The following section will first introduce Ultra Wide Band (UWB) technology.

[0031] Currently, UWB is used for precise positioning, specifically including the following three functions:

[0032] (1) Measure the time of flight (TOF) of the signal between the base station and the tag to achieve ranging.

[0033] (2) Time Difference of Arrival (TDOA): The location is determined by the time difference between the arrival of the tag at each base station, and the positioning accuracy can reach the CM level.

[0034] (3) Measurement of Phase Difference of Arrival (PDOA): The phase of arrival is used to measure the azimuth relationship between the base station and the tag.

[0035] This application uses UWB technology to detect the distance between a human body and an electronic device, which can replace SAR sensors.

[0036] The method for adjusting antenna transmission power provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0037] See Figure 1 This application provides a method for adjusting antenna transmission power, applied to electronic devices. The method specifically includes the following steps:

[0038] Step 101: Send a detection signal through the first ultra-wideband antenna;

[0039] Optionally, when the first ultra-wideband antenna is in idle mode, the detection signal is a first detection signal sequence; or, when the first ultra-wideband antenna is in working mode, the detection signal is a second detection signal sequence; wherein, the second detection signal sequence is a ranging sequence or an angle measuring sequence.

[0040] Step 102: Receive the first reflected signal of the detection signal through the second ultra-wideband antenna, and receive the second reflected signal of the detection signal through the third ultra-wideband antenna;

[0041] like Figure 2 The diagram shown is a typical system block diagram of Ultra Wide Band (UWB). Figure 2 In this chip, the SR100T is a secure precision ranging chipset. RFC, RF1, RF2, RF3, and RF4 are ports. TRX_com corresponds to ANT1, RX_H corresponds to ANT2, and RX_V corresponds to ANT3. ANT1 can transmit and receive, while ANT2 and ANT3 can receive in a time-division multiplexing manner. TRX_shared is for ranging only. ANT1, ANT2, and ANT3 form an antenna array to achieve 3D Angle of Arrival (AoA) measurement.

[0042] Based on this system example, the first ultra-wideband antenna in this application is ANT1, the second ultra-wideband antenna is ANT2, and the third ultra-wideband antenna is ANT3.

[0043] Step 103: Determine the position information of the human body relative to the electronic device based on the first reflected signal and the second reflected signal;

[0044] Step 104: Adjust the maximum transmit power of the target antenna according to the location information.

[0045] It should be noted that electronic devices include multiple data antennas for transmitting service data, distributed in different locations within the device. This step, based on location information, enables the identification of the target antenna closest to the human body from among the multiple data antennas, thereby adjusting the maximum transmission power of the target antenna.

[0046] In the above embodiments, using UWB technology to identify whether a human body is close to an electronic device and adjusting the maximum transmission power of the target antenna can eliminate the need for a SAR sensor, avoid the space occupied by the SAR sensor on the electronic device, and also reduce the cost of deploying the SAR sensor.

[0047] In a specific embodiment of this application, determining the position information of the human body relative to the electronic device based on the first reflected signal and the second reflected signal includes:

[0048] The relative distance between the human body and the electronic device is determined based on the first reflected signal and / or the second reflected signal;

[0049] When the relative distance is less than a preset threshold, the position information of the human body relative to the electronic device is determined based on a first distance and a second distance; wherein, the first distance is measured based on the first reflected signal, and the second distance is measured based on the second reflected signal.

[0050] As an implementation method, based on Figure 2 In a UWB system, when the earpiece is detected to be on, the electronic device begins emitting a specific short sequence (the sequence encoding differs from the ranging and angle-measuring sequences) on ANT1 to detect the relative distance between the electronic device and the human body. ANT2 and ANT3 receive the reflected short sequence emitted by ANT1 within a very short time t (t≤20cm / c, where c is the speed of light). Based on the round-trip time of electromagnetic waves, the relative distance between the electronic device and the human body can be obtained. As t decreases, the distance also decreases. In other words, this method utilizes the ranging principle of UWB to directly measure the relative distance between the electronic device and the human body.

[0051] As another implementation method, based on Figure 2The UWB system uses ANT1 to transmit a signal and ANT2 and ANT3 to detect the strength of the reflected signal to determine the relative distance between the electronic device and the human body. Specifically, the correspondence between the signal attenuation after reflection and the distance can be obtained in advance and stored in the electronic device. It can be understood that a larger distance results in a larger attenuation, and a smaller distance results in a smaller attenuation; there is a certain correlation between the two. Thus, this method can determine the relative distance between the electronic device and the human body by detecting the signal strength of the reflected signal.

[0052] Specifically, when the relative distance is less than a first threshold (e.g., 10cm), the position information of the human body relative to the electronic device is determined; when the relative distance is less than a second threshold (e.g., 0.5cm), it is determined that an object is approaching the electronic device, the SAR mechanism takes effect, and the electronic device begins to reduce the maximum high power of the data antenna.

[0053] In a specific embodiment of this application, determining the relative distance between the human body and the electronic device based on the first reflected signal and the second reflected signal includes:

[0054] Based on the correspondence between signal strength and distance, determine the first distance corresponding to the first signal strength of the first reflected signal and the second distance corresponding to the second signal strength of the second reflected signal;

[0055] The minimum of the first distance and the second distance is determined as the relative distance between the human body and the electronic device.

[0056] In practice, when UWB is in idle mode, ANT1 transmits an arbitrary sequence, and ANT2 and ANT3 receive the reflected signals. By obtaining the signal strength of the reflected signals and using the pre-obtained correspondence between distance and attenuation value, the relative distance between the human body and the electronic device can be obtained.

[0057] In practice, when UWB is in working mode, ANT1 transmits a sequence for ranging or angle measurement, while ANT2 and ANT3 receive the ranging or angle measurement sequence, and also receive the reflected signals. Because the human body is relatively close, the reflected signal is usually significantly stronger than the ranging or angle measurement signal, and the reflected signal also arrives earlier. The software can easily distinguish which signals are reflected from the human body from all the received signals (if they are weak and arrive late, it indicates that the distance to the human body is far, and the SAR detection mechanism is not triggered). Based on the correspondence between the signal strength attenuation value of the reflected signal and the distance, the relative distance between the human body and the electronic device can be obtained.

[0058] In a specific embodiment of this application, determining the position information of the human body relative to the electronic device based on the first reflected signal and the second reflected signal includes:

[0059] Based on the first reflected signal, a third distance between the human body and the electronic device is determined;

[0060] Based on the second reflected signal, a fourth distance between the human body and the electronic device is determined;

[0061] When the third distance is less than the fourth distance, the first position of the electronic device is determined to be close to the human body; the first position is the position of the second ultra-wideband antenna in the electronic device;

[0062] When the third distance is greater than the fourth distance, the second position of the electronic device is determined to be close to the human body; the second position is the position of the third ultra-wideband antenna in the electronic device.

[0063] For example, such as Figure 3 As shown, assuming the data antennas are positioned on the top and right sides of the electronic device, with ultra-wideband antenna ANT2 on the top and ANT3 on the left, and ANT2 and ANT3 operating in time-division multiplexing, different distances can be obtained using the ranging principle of UWB when the screen of the electronic device is facing the human head. When the distance detected by ANT2 is less than the distance detected by ANT3, it can be determined that the data antenna on the top side of the electronic device is closer to the human body; when the distance detected by ANT3 is less than the distance detected by ANT2, it can be determined that the data antenna on the right side of the electronic device is closer to the human body.

[0064] It should be pointed out that, based on Figure 2 The UWB system shown allows ANT1 to be used for ranging when ANT2 and ANT3 are used simultaneously for SAR detection. In this case, ANT2 and ANT3 can be used periodically for SAR detection to accommodate both ranging and angle measurement modes. The period T is related to the moving speed v of the electronic device, where T < 1 cm / v. The period T can be adjusted based on the actual performance of ranging and SAR detection. If T is too large, SAR detection will be insufficiently timely; if T is too small, it will encroach on the original ranging / ranging sequence duration.

[0065] See Figure 4, T2 is the time length for ranging / angle measurement. In different operating modes of the UWB protocol, T2 is a fixed value. Here, T needs to be greater than T2 to minimize the occupation of the normal ranging / angle measurement time of UWB. At the same time, it is necessary to satisfy T1 < T - T2 to reserve a protection interval and reduce the interference of SAR detection on the normal operation of UWB. It should be noted that there can be multiple angle measurement sequences in this period T, and the T2 period can also be single, which can be adjusted according to the actual effect.

[0066] In the above embodiments, by using the ranging principle supported by UWB to replace the SAR sensor, the relative distance and relative position between the electronic device and the human body are detected, avoiding the occupation of the space of the electronic device by deploying the SAR sensor, and reducing the cost of deploying the SAR sensor.

[0067] In a specific embodiment of the present application, determining the position information of the human body relative to the electronic device according to the first reflected signal and the second reflected signal includes:

[0068] Obtaining the first signal strength of the first reflected signal and the second signal strength of the second reflected signal;

[0069] When P1 - Pr2 < a × (P1 - Pr3), it is determined that the first position of the electronic device is close to the human body; the first position is the position of the second ultra-wideband antenna in the electronic device;

[0070] When P1 - Pr2 > a × (P1 - Pr3), it is determined that the second position of the electronic device is close to the human body; the second position is the position of the third ultra-wideband antenna in the electronic device;

[0071] Where, P1 is the transmission power of the detection signal, Pr2 is the first signal strength, Pr3 is the second signal strength, and a is the polarization difference between the second ultra-wideband antenna and the third ultra-wideband antenna.

[0072] It should be noted that a is an adjustable constant. As Figure 2 In the UWB system shown, the polarization difference between ANT2 and ANT3 is 90°, so it cannot be simply compared. Therefore, a is introduced to consider the polarization difference between ANT2 and ANT3.

[0073] Exemplarily, as Figure 3As shown in the figure, assume that the data antenna is arranged on the upper side and the right side of the electronic device, the ultra-wideband antenna ANT2 is located on the upper side of the electronic device, and the ultra-wideband antenna ANT3 is located on the left side of the electronic device. Then, when the screen of the electronic device faces the human head, the intensity of the reflected signal received through ANT2 is Pr2, and the intensity of the reflected signal received through ANT3 is Pr3; when P1 - Pr2 < a×(P1 - Pr3), it is considered that ANT2 is closer to the human body, and it is determined that the data antenna located on the upper side of the electronic device is closer to the human body. When P1 - Pr2 > a×(P1 - Pr3), it is considered that ANT3 is closer to the human body, and it is determined that the antenna on the right side of the electronic device is closer to the human body.

[0074] In the above embodiment, during the normal operation of UWB, the intensity of the reflected signal can be obtained without occupying more resources. By adding software logic, SAR detection can be performed to obtain the relative distance and relative position between the electronic device and the human body, avoiding the occupation of the space of the electronic device by deploying the SAR sensor, reducing the cost of deploying the SAR sensor, and not affecting the normal operation of the UWB system.

[0075] Further, adjusting the maximum transmission power of the target antenna according to the position information includes:

[0076] When it is determined that the first position of the electronic device is close to the human body, reducing the maximum transmission power of the target antenna close to the first position; or,

[0077] When it is determined that the second position of the electronic device is close to the human body, reducing the maximum transmission power of the target antenna close to the second position.

[0078] In specific implementation, the maximum transmission power of the data antenna close to the human body can be adjusted to a first value, and the transmission power of the data antenna relatively far from the human body can be adjusted to a second value; where the first value is less than the second value. In this way, the radiation performance of the data antenna far from the human body can be guaranteed to the greatest extent.

[0079] In specific implementation, when it is detected that the target antenna is closer to the human body, the maximum transmission power of the target antenna can be reduced, and the maximum transmission power of the data antenna far from the human body can be increased. In this way, the communication performance of the electronic device can be better guaranteed.

[0080] Next, in combination with the attached Figure 5 A specific example of the method for adjusting the transmission power of an antenna in this application will be described.

[0081] As Figure 5 shown, the method for adjusting the transmission power of the antenna specifically includes the following steps:

[0082] Step 51: Obtain the correspondence between the attenuation value of the signal after reflection and the reflection distance through training.

[0083] Step 52: Detect whether the receiver is working; if so, proceed to Step 3; if not, continue the detection.

[0084] Step 53: ANT1 sends a detection sequence with a specific signal strength P1 for SAR detection, and simultaneously receives the reflected signals of the detection sequence through ANT2 and ANT3 respectively, and detects the signal strengths Pr2 and Pr3 of the reflected signals.

[0085] Step 54: Determine whether the attenuation value of the reflected signal is less than the threshold; if so, proceed to Step 55, if not, proceed to Step 52.

[0086] That is, determine whether the following is satisfied: P1 - Pr2 ≤ ΔP12, P1 - Pr3 ≤ ΔP13. ΔP12 and ΔP13 are thresholds.

[0087] Step 55: Determine whether the following is satisfied: P1 - Pr2 < a×(P1 - Pr3), or, P1 - Pr2 > a×(P1 - Pr3); if so, proceed to Step 56; if not, proceed to Step 55.

[0088] Step 56: Reduce the maximum transmission power of the target antenna.

[0089] The above example performs SAR detection by testing the reflected signal strength, which can replace the SAR sensor, reduce the space occupied by the SAR sensor, save costs, and has no impact on the normal operation of UWB.

[0090] In the method for adjusting the antenna transmission power provided by the embodiments of the present application, the execution subject can be a device for adjusting the antenna transmission power. In the embodiments of the present application, taking the device for adjusting the antenna transmission power as an example to execute the method for adjusting the antenna transmission power, the device for adjusting the antenna transmission power provided by the embodiments of the present application is described.

[0091] See Figure 6 , the embodiments of the present application provide a device for adjusting the antenna transmission power, which is applied to an electronic device. The device 600 includes:

[0092] A sending module 601, configured to send a detection signal through a first ultra-wideband antenna;

[0093] A receiving module 602, configured to receive the first reflected signal of the detection signal through a second ultra-wideband antenna, and receive the second reflected signal of the detection signal through a third ultra-wideband antenna;

[0094] A determination module 603, configured to determine position information of a human body relative to the electronic device according to the first reflected signal and the second reflected signal;

[0095] A power adjustment module 604, configured to adjust the maximum transmission power of a target antenna according to the position information.

[0096] Optionally, when the first ultra-wideband antenna is in an idle mode, the detection signal is a first detection signal sequence; or,

[0097] when the first ultra-wideband antenna is in an operating mode, the detection signal is a second detection signal sequence;

[0098] wherein, the second detection signal sequence is a ranging sequence or an angle measurement sequence, and the first detection signal sequence is different from the second detection signal sequence.

[0099] Optionally, the determination module 603 includes:

[0100] A first determination sub-module, configured to obtain a first signal intensity of the first reflected signal and a second signal intensity of the second reflected signal;

[0101] A second determination sub-module, configured to determine that a first position of the electronic device is close to the human body when P1 - Pr2 < a × (P1 - Pr3); the first position is the position of the second ultra-wideband antenna in the electronic device;

[0102] A third determination sub-module, configured to determine that a second position of the electronic device is close to the human body when P1 - Pr2 > a × (P1 - Pr3); the second position is the position of the third ultra-wideband antenna in the electronic device;

[0103] wherein, P1 is the transmission power of the detection signal, Pr2 is the first signal intensity, Pr3 is the second signal intensity, and a is the polarization difference between the second ultra-wideband antenna and the third ultra-wideband antenna.

[0104] Optionally, the power adjustment module includes:

[0105] A first adjustment unit, configured to reduce the maximum transmission power of the target antenna close to the first position when it is determined that the first position of the electronic device is close to the human body; or,

[0106] A second adjustment unit, configured to reduce the maximum transmission power of the target antenna close to the second position when it is determined that the second position of the electronic device is close to the human body.

[0107] Optionally, the determination module includes:

[0108] The first determining submodule is used to determine the relative distance of the human body relative to the electronic device based on the first reflected signal and / or the second reflected signal;

[0109] The second determining submodule is used to determine the position information of the human body relative to the electronic device based on a first distance and a second distance when the relative distance is less than a preset threshold; wherein the first distance is measured based on the first reflected signal and the second distance is measured based on the second reflected signal.

[0110] Optionally, the first determining submodule includes:

[0111] The seventh determining unit is used to determine, based on the correspondence between signal strength and distance, a first distance corresponding to a first signal strength of the first reflected signal and a second distance corresponding to a second signal strength of the second reflected signal;

[0112] The eighth determining unit is used to determine the minimum value between the first distance and the second distance as the relative distance between the human body and the electronic device.

[0113] The antenna transmission power adjustment device in this application embodiment can be an electronic device or a component within an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the specific implementation.

[0114] The antenna transmission power adjustment device in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit it.

[0115] The antenna transmission power adjustment device provided in this application embodiment can achieve Figures 1 to 5 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.

[0116] Optionally, such as Figure 7 As shown, this application embodiment also provides an electronic device 700, including a processor 701 and a memory 702. The memory 702 stores a program or instructions that can run on the processor 701. When the program or instructions are executed by the processor 701, they implement the various steps of the above-described antenna transmission power adjustment method embodiment and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0117] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0118] Figure 8 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of this application.

[0119] The electronic device 800 includes, but is not limited to, components such as: radio frequency unit 801, network module 802, audio output unit 803, input unit 804, sensor 805, display unit 806, user input unit 807, interface unit 808, memory 809, and processor 810.

[0120] Those skilled in the art will understand that the electronic device 800 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 810 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. 8 The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0121] The radio frequency unit 801 is used to transmit a detection signal through a first ultra-wideband antenna; receive a first reflected signal of the detection signal through a second ultra-wideband antenna; and receive a second reflected signal of the detection signal through a third ultra-wideband antenna.

[0122] The processor 810 is configured to determine the position information of the human body relative to the electronic device based on the first reflected signal and the second reflected signal; and adjust the maximum transmission power of the target antenna based on the position information.

[0123] Optionally, when the first ultra-wideband antenna is in idle mode, the detection signal is a first detection signal sequence; or,

[0124] When the first ultra-wideband antenna is in the working mode, the detection signal is a second detection signal sequence;

[0125] Wherein, the second detection signal sequence is a ranging sequence or an angle measurement sequence, and the first detection signal sequence is different from the second detection signal sequence.

[0126] Optionally, the processor 810 is specifically configured to:

[0127] Determine a first distance of the human body relative to the electronic device according to the first reflected signal;

[0128] Determine a second distance of the human body relative to the electronic device according to the second reflected signal;

[0129] When the first distance is less than the second distance, determine that a first position of the electronic device is close to the human body; the first position is the position of the second ultra-wideband antenna in the electronic device;

[0130] When the first distance is greater than the second distance, determine that a second position of the electronic device is close to the human body; the second position is the position of the third ultra-wideband antenna in the electronic device.

[0131] Optionally, the processor 810 is specifically configured to:

[0132] Obtain a first signal strength of the first reflected signal and a second signal strength of the second reflected signal;

[0133] When P1 - Pr2 < a × (P1 - Pr3), determine that a first position of the electronic device is close to the human body; the first position is the position of the second ultra-wideband antenna in the electronic device;

[0134] When P1 - Pr2 > a × (P1 - Pr3), determine that a second position of the electronic device is close to the human body; the second position is the position of the third ultra-wideband antenna in the electronic device;

[0135] Wherein, P1 is the transmission power of the detection signal, Pr2 is the first signal strength, Pr3 is the second signal strength, and a is the polarization difference between the second ultra-wideband antenna and the third ultra-wideband antenna.

[0136] Optionally, the processor 810 is specifically configured to:

[0137] When it is determined that a first position of the electronic device is close to the human body, reduce the maximum transmission power of the target antenna close to the first position; or,

[0138] When the second position of the electronic device is determined to be close to the human body, the maximum transmission power of the target antenna close to the second position is reduced.

[0139] Optionally, the processor 810 is specifically used for:

[0140] The relative distance between the human body and the electronic device is determined based on the first reflected signal and / or the second reflected signal;

[0141] If the relative distance is less than a preset threshold, the position information of the human body relative to the electronic device is determined based on the first reflected signal and the second reflected signal.

[0142] Optionally, the processor 810 is specifically used for:

[0143] Based on the correspondence between signal strength and distance, determine the third distance corresponding to the first signal strength of the first reflected signal and the fourth distance corresponding to the second signal strength of the second reflected signal;

[0144] The minimum value between the third distance and the fourth distance is determined as the relative distance between the human body and the electronic device.

[0145] It should be understood that, in this embodiment, the input unit 804 may include a graphics processing unit (GPU) 8041 and a microphone 8042. The GPU 8041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 806 may include a display panel 8061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 807 includes at least one of a touch panel 8071 and other input devices 8072. The touch panel 8071 is also called a touch screen. The touch panel 8071 may include a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0146] The memory 809 can be used to store software programs and various data. The memory 809 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 809 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 809 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0147] Processor 810 may include one or more processing units; optionally, processor 810 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 810.

[0148] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described antenna transmission power adjustment method embodiment and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0149] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0150] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described antenna transmission power adjustment method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0151] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0152] This application provides a computer program product stored in a storage medium. The program product is executed by at least one processor to implement the various processes of the antenna transmission power adjustment method embodiment described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0153] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0154] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0155] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for adjusting the transmission power of an antenna, characterized in that The method is applied to an electronic device, and comprises: sending a probe signal through a first ultra-bandwidth antenna; receiving a first reflected signal of the probe signal through a second ultra-bandwidth antenna and receiving a second reflected signal of the probe signal through a third ultra-bandwidth antenna; determining position information of a human body relative to the electronic device according to the first reflected signal and the second reflected signal; adjusting maximum transmitting power of a target antenna according to the position information; wherein, in the case that the second ultra-bandwidth antenna and the third ultra-bandwidth antenna are used for SAR detection at the same time and the first ultra-bandwidth antenna is used for ranging, the second ultra-bandwidth antenna and the third ultra-bandwidth antenna periodically perform SAR detection, and T2 2. The method of claim 1, wherein: when the first ultra-bandwidth antenna is in an idle mode, the probe signal is a first probe signal sequence; or when the first ultra-bandwidth antenna is in an active mode, the probe signal is a second probe signal sequence; wherein the second probe signal sequence is a ranging sequence or an angle measurement sequence.

3. The method of claim 1, wherein, The method further comprises: obtaining a first signal strength of the first reflected signal and a second signal strength of the second reflected signal; when P1-Pr2 when P1-Pr2 wherein P1 is the transmitting power of the probe signal, Pr2 is the first signal strength, Pr3 is the second signal strength, and a is a polarization difference between the second ultra-bandwidth antenna and the third ultra-bandwidth antenna.

4. The method of claim 3, wherein, The method further comprises: when it is determined that the first position of the electronic device is close to the human body, reducing the maximum transmitting power of a target antenna close to the first position; or when it is determined that the second position of the electronic device is close to the human body, reducing the maximum transmitting power of a target antenna close to the second position.

5. The method of claim 1, wherein, The method further comprises: determining a relative distance of the human body relative to the electronic device according to the first reflected signal and / or the second reflected signal; when the relative distance is less than a preset threshold, determining position information of the human body relative to the electronic device according to a first distance and a second distance; wherein the first distance is measured according to the first reflected signal, and the second distance is measured according to the second reflected signal.

6. The method of claim 5, wherein, The determining the relative distance between the human body and the electronic device according to the first reflection signal and the second reflection signal comprises: determining the first distance corresponding to the first signal strength of the first reflection signal and the second distance corresponding to the second signal strength of the second reflection signal according to the correspondence between the signal strength and the distance; determining the minimum value of the first distance and the second distance as the relative distance between the human body and the electronic device.

7. An apparatus for adjusting the transmission power of an antenna, characterized by The device is applied to an electronic device and comprises: a sending module configured to send a probe signal through a first UWB antenna; a receiving module configured to receive a first reflection signal of the probe signal through a second UWB antenna and receive a second reflection signal of the probe signal through a third UWB antenna; a determining module configured to determine position information of a human body relative to the electronic device according to the first reflection signal and the second reflection signal; a power adjusting module configured to adjust the maximum transmission power of a target antenna according to the position information; wherein, in the case that the second UWB antenna and the third UWB antenna are used for SAR detection at the same time and the first UWB antenna is used for distance measurement, the second UWB antenna and the third UWB antenna periodically perform SAR detection, and T2 8. The device for adjusting the transmission power of an antenna according to claim 7, wherein: when the first UWB antenna is in an idle mode, the probe signal is a first probe signal sequence; or when the first UWB antenna is in an active mode, the probe signal is a second probe signal sequence; wherein the second probe signal sequence is a distance measurement sequence or an angle measurement sequence.

9. The apparatus for adjusting the transmission power of an antenna according to claim 7, wherein, The determining module comprises: a first determining sub-module configured to obtain the first signal strength of the first reflection signal and the second signal strength of the second reflection signal; a second determining sub-module configured to determine that a first position of the electronic device is close to the human body when P1-Pr2 a third determining sub-module configured to determine that a second position of the electronic device is close to the human body when P1-Pr2 wherein, P1 is the transmission power of the probe signal, Pr2 is the first signal strength, Pr3 is the second signal strength, and a is the polarization difference between the second UWB antenna and the third UWB antenna.

10. The apparatus for adjusting the transmission power of an antenna according to claim 9, wherein, The power adjusting module comprises: a first adjusting unit configured to reduce the maximum transmission power of a target antenna close to the first position when it is determined that the first position of the electronic device is close to the human body; or a second adjusting unit configured to reduce the maximum transmission power of a target antenna close to the second position when it is determined that the second position of the electronic device is close to the human body.

11. The apparatus for adjusting the transmission power of an antenna according to claim 7, wherein The determining module comprises: a first determining sub-module, configured to determine a relative distance between the human body and the electronic device according to the first reflected signal and / or the second reflected signal; a second determining sub-module, configured to determine position information of the human body relative to the electronic device according to a first distance and a second distance when the relative distance is less than a preset threshold, wherein the first distance is measured according to the first reflected signal, and the second distance is measured according to the second reflected signal.

12. The apparatus for adjusting the transmission power of an antenna according to claim 11, wherein, The first determining sub-module comprises: a seventh determining unit, configured to determine the first distance corresponding to a first signal strength of the first reflected signal and the second distance corresponding to a second signal strength of the second reflected signal according to a corresponding relationship between the signal strength and the distance; an eighth determining unit, configured to determine a minimum value of the first distance and the second distance as the relative distance between the human body and the electronic device.

13. An electronic device, comprising: A processor and a memory are included, the memory stores programs or instructions executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the antenna transmit power adjustment method according to any one of claims 1-6.

14. A readable storage medium, characterized by, The readable storage medium stores programs or instructions, and the programs or instructions are executed by the processor to implement the steps of the antenna transmit power adjustment method according to any one of claims 1-6.

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