Specific absorption rate compliance control method, device and terminal equipment

Abstract

The present application relates to a method, device and terminal device for controlling the compliance of specific absorption rate; wherein the method for controlling the compliance of specific absorption rate includes: in response to the terminal device currently satisfying the specific absorption rate control condition, respectively obtaining the receiving signals of multiple antennas through the transceiver path; the received signal includes the broadcast signal from the network device that is not blocked by the target object; obtaining the signal characteristic parameters of the received signal, processing the signal characteristic parameters, and determining the transmission parameters of the transceiver path; the transmission parameters are used to indicate that the transmission signals of multiple antennas are respectively focused on the network device along the corresponding target path, so that the specific absorption rate hot spot area formed by the focusing of each transmission signal bypasses the target object; the target path includes the reverse path of the transmission path of the network device to send the broadcast signal. The present application can achieve compliance with the specific absorption rate SAR and ensure communication performance.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method, apparatus and terminal device for controlling specific absorption rate compliance. Background Art

[0002] With the continuous development of wireless communication technology, people are using more and more electronic devices, especially smartphones. When using smartphones, they will generate electromagnetic radiation during the communication process. In order to ensure the safety of people when using electronic devices and prevent the human body from absorbing too much electromagnetic wave energy, there are generally some safety standards. For example, electronic devices at home and abroad need to meet the compliance requirements of electromagnetic wave radiation specific absorption rate (SAR). SAR is the electromagnetic radiation energy absorbed by human tissue per unit mass per unit time, which can also be called the electromagnetic wave absorption ratio.

[0003] Currently, the main means to solve SAR compliance issues is power back-off (reducing RF power). However, this method will affect the communication performance of electronic equipment. Summary of the invention

[0004] Based on this, it is necessary to provide a method, device and terminal equipment for controlling the specific absorption rate compliance that can ensure communication performance in response to the above technical problems.

[0005] In a first aspect, the present application provides a method for controlling compliance with a specific absorption rate, which is applied to a signal processing component of a terminal device, wherein the signal processing component is connected to a plurality of antennas through a transceiver path, the number of the transceiver paths is one or more, and the distribution positions of the plurality of antennas are different; the method comprises:

[0006] In response to the terminal device currently satisfying a specific absorption rate control condition, receiving signals of multiple antennas are respectively obtained through the transceiver path; the specific absorption rate control condition includes that the distance between the terminal device and the target object is less than or equal to a preset distance; the received signal includes a broadcast signal from the network device that is not blocked by the target object;

[0007] The signal characteristic parameters of the received signal are obtained, the signal characteristic parameters are processed, and the transmission parameters of the transceiver path are determined; the transmission parameters are used to instruct the transmission signals of multiple antennas to focus on the network device along the corresponding target paths, so that the specific absorption rate hotspot area formed by the focusing of each transmission signal bypasses the target object; the target path includes the reverse path of the transmission path of the network device to send the broadcast signal.

[0008] In one embodiment, the signal characteristic parameters include the amplitude of the received signal and the phase of the received signal; the transmission parameters include the amplitude of the transmitted signal and the phase of the transmitted signal;

[0009] The step of processing the signal characteristic parameters to determine the transmission parameters of the transceiver path includes:

[0010] Performing time inversion processing on the amplitude and phase of the received signal to obtain a time inversion calculation result;

[0011] The launch parameters are confirmed based on the time reversal calculation results.

[0012] In one embodiment, the step of performing time inversion processing on the amplitude of the received signal and the phase of the received signal to obtain the time inversion calculation result includes:

[0013] If the receiving frequency of the transceiver path for the receiving signal is different from the transmitting frequency of the transceiver path for the transmitting signal, then obtaining the channel transmission parameters of the receiving signal and the channel transmission parameters of the transmitting signal;

[0014] Calibrate the channel transmission parameters of the received signal and the channel transmission parameters of the transmitted signal to obtain a calibration result; the calibration result is used to characterize the quantitative compensation of the difference in the channel transmission parameters between the received signal and the transmitted signal;

[0015] Based on the calibration result, a time inversion calculation of the signal characteristic parameters is completed to obtain a time inversion calculation result.

[0016] In one of the embodiments, the SAR control condition further includes that the terminal device is in an initialization state; and the method further includes:

[0017] If the received signals of all antennas are obtained through the transceiver path, the signal characteristic parameters of each received signal are obtained respectively, and each signal characteristic parameter is processed to determine each transmission parameter;

[0018] Based on each transmission parameter, when the transmission signals of each antenna are respectively along the corresponding target path and are focused on the network device, it is confirmed that the terminal device enters the initialization state.

[0019] In one of the embodiments, the preset distance is determined based on the terminal device's compliance requirements for the target object's specific absorption rate; the specific absorption rate control condition also includes that the distance between the terminal device and the network device is less than or equal to a distance threshold.

[0020] In the second aspect, the present application also provides a specific absorption rate compliance control device, which is applied to a signal processing component of a terminal device, the signal processing component is connected to multiple antennas through a transceiver path, the number of the transceiver paths is one or more, and the distribution positions of the multiple antennas are different; the device includes:

[0021] A signal receiving module, configured to obtain reception signals of multiple antennas through transceiver paths respectively in response to the terminal device currently satisfying a specific absorption rate control condition; the specific absorption rate control condition includes that the distance between the terminal device and the target object is less than or equal to a preset distance; and the reception signal includes a broadcast signal from a network device that is not blocked by the target object;

[0022] A parameter determination module is used to obtain signal characteristic parameters of a received signal, process the signal characteristic parameters, and determine the transmission parameters of a transceiver path; the transmission parameters are used to indicate that the transmission signals of multiple antennas are focused on the network device along a target path, so that the specific absorption rate hotspot area formed by the focusing of each transmission signal bypasses the target object; the target path includes a reverse path of the transmission path of the network device to send a broadcast signal.

[0023] In a third aspect, the present application further provides a signal processing component, the signal processing component is connected to a plurality of antennas through a transceiver path, the number of the transceiver paths is one or more, and the distribution positions of the plurality of antennas are different;

[0024] The signal processing component is used to implement the steps of the above method.

[0025] In one embodiment, the signal processing component includes a modem and a transceiver connected to the modem; the transceiver is connected to the plurality of antennas via a transceiver path;

[0026] The transceiver is used to receive and obtain the signal characteristic parameters of the received signal; the modem is used to process the signal characteristic parameters to obtain the transmission parameters.

[0027] In a fourth aspect, the present application also provides a terminal device, including the above-mentioned signal processing component, and also including a transceiver path and multiple antennas; the signal processing component is connected to the multiple antennas through the transceiver path, the number of the transceiver paths is one or more, and the distribution positions of the multiple antennas are different.

[0028] In one embodiment, the transceiver path includes a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna;

[0029] The number of the transceiver path is one, and the multiple antennas include at least four antennas; the terminal device also includes a first switching component and a second switching component;

[0030] The signal processing component is connected to the first switching component through the receiving branch and the transmitting branch respectively; the first switching component is used to switch to the transmitting branch being turned on or the receiving branch being turned on according to the signal sent by the signal processing component;

[0031] The first switching component is connected to each antenna through the second switching component. The second switching component is used to switch to the corresponding antenna to be connected to the transmitting branch or the receiving branch according to the signal sent by the signal processing component.

[0032] In one of the embodiments, the terminal device is applied to a time division duplex communication mode, and the first switching component includes a single-path conducting switching device;

[0033] The terminal device is applied to the frequency division duplex communication mode, and the first switching component includes a duplexer.

[0034] In one embodiment, the plurality of antennas include at least four antennas; the number of transceiver paths is the same as the number of antennas, and the operating frequencies of the transceiver paths are the same;

[0035] The terminal device further includes a plurality of switching components, each of which is connected to each of the transceiver paths in a one-to-one correspondence, and each of which is connected to each of the antennas in a one-to-one correspondence;

[0036] The transceiver path includes a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna; the signal processing component is connected to the switching component through the transmitting branch and the receiving branch respectively, and the switching component is used to switch to the corresponding antenna and the transmitting branch to be connected or the receiving branch to be connected according to the signal sent by the signal processing component.

[0037] In one of the embodiments, the terminal device is applied to a time division duplex communication mode, and the switching component includes a single-path conducting switching device;

[0038] The terminal device is applied to the frequency division duplex communication mode, and the switching component includes a duplexer.

[0039] In a fifth aspect, the present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0040] In a sixth aspect, the present application also provides a computer program product, including a computer program, which implements the steps of the above method when executed by a processor.

[0041] The above-mentioned specific absorption rate compliance control method, device and terminal equipment are connected to multiple antennas through transceiver paths, and the distribution positions of each antenna are different, forming a multi-path receive / transmit antenna. Then, when the terminal equipment meets the specific absorption rate control conditions, the signal characteristics of the broadcast signal sent by the network device are extracted to obtain the signal characteristic parameters, and the transmission parameters are obtained based on the signal characteristic parameters. The transmission parameters are used to indicate the transmission signal of the antenna, so that the transmission signal is focused at the network device along the corresponding target path. The target path includes the reverse path of the transmission path of the broadcast signal sent by the network device, that is, the transmission signal directly bypasses the target object and does not form a strong signal area (for example, a specific absorption rate hotspot area) at the target object, thereby achieving compliance with the specific absorption rate SAR. At the same time, since the transmission signal of the terminal device is focused at the network device, the utilization rate of the RF signal energy is also significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1A This is a schematic diagram of the transceiver in the time reversal system;

[0043] Figure 1B It is a schematic diagram of beacon signal transmission in the time reversal system;

[0044] Figure 1C This is a schematic diagram of the working principle of the time reversal system;

[0045] Figure 2A It is a schematic diagram of the structure of the transceiver circuit of the device under test;

[0046] Figure 2B Schematic diagram of the antenna position in the device under test;

[0047] Figure 2C is the distribution of antenna SAR values ​​in the device under test;

[0048] Figure 3 A diagram of an application environment of a specific absorption rate compliance control method in one embodiment;

[0049] Figure 4 is a flow chart of a method for controlling specific absorption rate compliance in one embodiment;

[0050] Figure 5 A schematic diagram of a target object and a terminal device in an embodiment;

[0051] Figure 6 is a schematic diagram of the structure of a terminal device in an embodiment;

[0052] Figure 7 A schematic diagram of a target object occlusion signal in one embodiment;

[0053] Figure 8 A schematic diagram of focusing transmission of a transmission signal in one embodiment;

[0054] Fig. 9 A schematic diagram of a flow chart of a step of processing signal characteristic parameters in one embodiment;

[0055] Fig.10 A schematic diagram of the working principle of time reversal in one embodiment;

[0056] Fig.11 A schematic diagram of the working principle of time reversal in another embodiment;

[0057] Fig.12 A schematic diagram of a flow chart of a step of confirming that a terminal device enters an initialization state in an embodiment;

[0058] Fig.13 is a schematic diagram of a terminal device in an initialization state in an embodiment;

[0059] Fig.14 is a structural block diagram of a specific absorption rate compliance control device in one embodiment;

[0060] Fig.15 is a structural block diagram of a terminal device in an embodiment;

[0061] Fig.16 is a structural block diagram of a terminal device in another embodiment;

[0062] Fig.17 A schematic diagram of a transceiver path and antenna structure in a terminal device in an embodiment;

[0063] Fig.18 A schematic diagram of a transceiver path and an antenna structure in a terminal device in another embodiment;

[0064] Fig.19 A schematic diagram of a transceiver path and a duplexer in a terminal device in an embodiment;

[0065] Fig. 20 FIG. 4 is a diagram showing the internal structure of a terminal device in an embodiment. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0067] SAR (Specific Absorption Rate) is an internationally used indicator for evaluating the impact of radio waves on the human body. It is a safety indicator and is strictly regulated by regulatory agencies in countries and regions around the world. Currently, the two mainstream standards in the world are 1.6W / Kg (watt / kilogram) of the FCC (Federal Communications Commission) and 2.0W / Kg of the European Union (Conformite Europeenne, CE).

[0068] The SAR value is strongly correlated with parameters such as RF transmission power, antenna efficiency, and antenna radiation field shape, and is directly proportional to the conducted power. The higher the conducted power, the higher the SAR value. Currently, the most commonly used method in the mobile phone industry to solve SAR exceeding the standard is to reduce RF power (power back-off).

[0069] For electromagnetic wave signals of different frequencies, the SAR regulatory agencies in different regions have slightly different requirements. For example, for radio frequency signals below 3GHz, the FCC requires that the average SAR value within a 100-second period must not exceed the upper limit of 1.6W / Kg. However, the real-time SAR value can exceed 1.6W / Kg, as long as the average SAR value within the time window required by the regulations (such as 100 seconds for FCC) is controlled within the range required by the regulations.

[0070] To facilitate understanding of the present solution, before describing the embodiments of the present application, the application background of the embodiments of the present application is described.

[0071] For example, Figure 1A A time reversal (TR) system is shown, which includes a transceiver 102 and a transceiver 104. Figure 1B As shown, the transceiver 104 first transmits a beacon signal omnidirectionally, and only a part of the signal reaches the transceiver 102 after direct / reflection. The transceiver 102 adjusts the parameters of its transmission signal according to the received Beacon signal of the transceiver 104, and the transmitter of the transceiver 102 transmits the RF signal according to the adjusted parameters. The transmission signal of the transceiver 102 will achieve RF power focusing at the transceiver 104 (such as Figure 1C shown).

[0072] Ideally, the energy of the transmitted signal of the transceiver 102 can be focused on the antenna of the transceiver 104 after direct radiation / reflection. The higher the energy concentration, the higher the signal transmission efficiency. The area of ​​the energy focusing area that can be achieved currently is about 4cm*4cm.

[0073] For example, Figure 2AThe schematic diagram of the structure of the transceiver circuit of the device under test (DUT) is as follows: Figure 2A As shown, it may include: a transceiver 200, a power amplifier (PA) 202, a low noise amplifier (LNA) 204, and an antenna 206. Among them, the transceiver 200 represents a transceiver, which can control the transmission frequency of the signal; the power amplifier 202 represents the power amplification module of the transmission link; the low noise amplifier 204 represents the LNA on the receiving link; in addition, Figure 2B This is a schematic diagram of the antenna position in the DUT. Figure 2B As shown, taking the device under test as a mobile phone as an example, in the two-dimensional plane of the mobile phone, 206 represents the position of the antenna in the DUT.

[0074] For a given conducted power and antenna status, the location of the SAR hotspot (the point with the highest SAR value) is determined, the distribution of SAR is fixed (SAR gradient map), and the SAR value (specifically the maximum SAR value) is also determined.

[0075] like Figure 2C As shown in the figure, the dotted circle on the upper left of the DUT can be understood as a distribution diagram of equal SAR values ​​(ovals represent the same SAR values, and the further out the ellipse is, the lower the SAR value is). The higher the RF power, the higher the SAR hotspot value (the center of the dotted ellipse), and the lower the RF power, the lower the SAR hotspot value. The regulatory agency's requirement is that the point with the highest SAR value (average SAR value) should not exceed the regulatory requirements, such as: FCC 1.6W / Kg, CE 2.0W / Kg.

[0076] At present, the main means for mobile phones to solve the SAR compliance problem is power backoff (power backoff means reducing the transmission power). However, power backoff will affect the user experience (reduced data throughput, Internet access lag, etc.). Although the mobile phone signal transmission system can emit higher power, the mobile phone's transmission power cannot work at a higher transmission power state due to the limitation of SAR compliance, which wastes the performance of the mobile phone.

[0077] The specific absorption rate compliance control method provided in the embodiment of the present application can be applied to Figure 3In the application environment shown. The communication system may include a network device 302, which may be a device that communicates with a terminal 304 (or referred to as a communication terminal, terminal device). The network device 302 may provide communication coverage for a specific geographical area, and may communicate with a terminal 304 located in the coverage area. Optionally, the network device 302 may be a network device (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a network device (NodeB, NB) in a WCDMA system, or an evolved network device (Evolutional Node B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a core network in a 5G network, a base station, and other network-side devices, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

[0078] In some examples, the network device in the embodiments of the present application may be a base station. Optionally, the base station is an indoor base station, such as an indoor small base station scenario, where the terminal device is close to the base station; in other examples, the network device may include a device that provides wireless communication functions for the terminal, such as a chip system, a chip, or a chip module. For example, the chip system may include a chip, or may include other discrete devices.

[0079] The communication system may also include at least one terminal 304 located within the coverage of the network device 302. As used herein, a "terminal" is a terminal device that is configured to communicate via a wireless interface, which may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radiotelephones with data processing, fax and data communication capabilities; Personal Digital Assistants (PDAs) that may include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. Terminal 304 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a PDA, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

[0080] In some examples, the terminal device in the embodiments of the present application can be suitable for indoor applications, taking the network device as an indoor base station and the terminal device as a mobile phone as an example, such as an indoor small base station scenario, the distance between the mobile phone and the base station is about 10 meters. In other examples, the terminal device may include a device with wireless communication functions, such as a chip system, a chip, and a chip module. For example, the chip system may include a chip and may also include other discrete devices.

[0081] It should be noted that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, High Speed ​​Downlink Packet Access (HSDPA), General Packet Radio Service (GPRS), Enhanced Data Rate for GSM Evolution (EDGE), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5G New Radio (NR) system, 6th Generation (6G) communication system or other communication systems.

[0082] In one embodiment, Figure 4 As shown, a method for controlling compliance with specific absorption rate is provided, and the method is applied to the terminal in FIG1 as an example for explanation. The method can be specifically applied to a signal processing component of the terminal device, and the signal processing component is connected to multiple antennas through a transceiver path. The number of the transceiver paths is one or more, and the distribution positions of the multiple antennas are different; the method includes the following steps:

[0083] Step 402, in response to the terminal device currently satisfying the specific absorption rate control condition, the receiving signals of multiple antennas are respectively obtained through the transceiver path; the specific absorption rate control condition includes that the distance between the terminal device and the target object is less than or equal to the preset distance; the received signal includes a broadcast signal from the network device that is not blocked by the target object.

[0084] Among them, the specific absorption rate control condition may refer to a trigger condition for instructing the terminal device to execute the SAR compliance mechanism; such as Figure 5As shown, taking the target object as a user as an example, when the user approaches the transmitting antenna of the terminal device, the terminal device senses that the user is approaching. If the SAR is too high at this time, the terminal device can trigger the mechanism to reduce the SAR (for example, actively turn on the mechanism to reduce the SAR) to ensure that the SAR is compliant when the user approaches. Figure 5 As shown, the distribution positions of multiple antennas in the terminal device are different.

[0085] In an embodiment of the present application, the specific absorption rate control condition may include that the distance between the terminal device and the target object is less than or equal to a preset distance; illustratively, the preset distance may refer to the distance of the user close to the mobile phone perceived by the terminal device (for example, the distance of the user's body from the terminal device). In one embodiment, the terminal device can sense the approach of a human body through a ranging unit and confirm the distance between the terminal device and the target object. Optionally, the ranging unit can be implemented using a distance sensor, which is disposed in the terminal device and outputs a sensor signal; when the sensor detects that a human body is approaching, such as when answering a call, the signal processing component receives the sensor signal, and when the sensor signal indicates that a human body is approaching (the distance between the terminal device and the target object is less than or equal to the preset distance), it is confirmed that the terminal device currently meets the specific absorption rate control condition.

[0086] In one of the embodiments, the preset distance is determined based on the terminal device's compliance requirement for the target object's specific absorption rate; the specific absorption rate control condition also includes that the distance between the terminal device and the network device is less than or equal to a distance threshold;

[0087] Specifically, the preset distance in the embodiment of the present application can be determined based on the terminal device's compliance requirements for the target object's specific absorption rate, for example, the target object is close to the terminal device until the distance at which the terminal device is triggered to initiate specific absorption rate compliance control.

[0088] Optionally, the specific absorption rate control condition may also include that the distance between the terminal device and the network device is less than or equal to a distance threshold; the embodiment of the present application is applicable to scenarios where the distance between the terminal device and the network device is relatively close; taking the terminal device as a mobile phone and the network device as a base station as an example, when the distance between the mobile phone and the base station is relatively close (such as in a small base station scenario indoors, the distance between the mobile phone and the base station may be only about 10 meters), the terminal device may be triggered to start specific absorption rate compliance control.

[0089] In some examples, the value of the distance threshold is related to the number of transceiver channels and the number of antennas of the terminal device. For example, if the transmission power of each transceiver channel is the same, that is, each transceiver channel transmits the same amount of power, then the combined power is large, and the communication distance can be longer. Furthermore, the value of the distance threshold is related to the difference in signal characteristics of the antenna receiving signal. If the distance threshold is too large (that is, the distance is too far), the signal transmitted from the "far away" to the antenna of the terminal device (such as DUT) will be regarded as no difference, and multiple antennas (such as four antennas) on the terminal device may be regarded as one antenna (the signal characteristics received by the four antennas are exactly the same, or the difference is too small); in some examples, the value range of the distance threshold can be less than or equal to 10 meters.

[0090] Further, in response to the terminal device currently satisfying the specific absorption rate control condition, the signal processing component obtains the receiving signals of the multiple antennas through the transceiver path respectively; Figure 6 As shown, the terminal device 100 may include a signal processing component 10, the signal processing component 10 is connected to multiple antennas through a transceiver path, the number of the transceiver paths is one or more, and the multiple antennas are distributed at different positions in the terminal device 100. Exemplarily, the terminal device 100 may be applied to a time division duplex (TDD) communication mode, and may also be applied to a frequency division duplex (FDD) communication mode.

[0091] Among them, the signal processing component 10 may refer to a device capable of processing the receiving signal and transmitting signal of the antenna; optionally, the signal processing component may include a modem (Modulate DEModulale, Modem) and a transceiver (Transceiver), and the transceiver is used to receive and transmit the receiving signals and transmitting signals of multiple antennas, and process signals, such as signal feature detection, and amplitude phase detection. The modem is used for signal processing, for example, processing signal feature parameters, determining the transmission parameters of the transceiver path, and allocating multiple antennas, generating switching signals, etc. The switching signal can be used to switch the antenna to be connected to the corresponding transceiver path.

[0092] Exemplarily, the transceiver path may refer to a transmit / receive path (or a transmit / receive circuit, or a TX / RX link), and the transceiver path may include a power amplifier (PA), a low noise amplifier (LNA), and a corresponding switching component, the switching component is used to conduct the transmit / receive path in a corresponding manner to match the communication mode of the terminal device, and the switching component can respond to a switching signal; in the embodiment of the present application, the transceiver path cooperates with a multi-channel transceiver / receiver antenna formed by multiple antennas, which can respectively transmit and receive signals in the same frequency band, and then multiple transceiver paths can operate at the same frequency. It should be noted that the operating frequency of the transmit / receive antenna is confirmed after the design of the antenna is determined, and the operating frequency can be a design parameter of the antenna, and the operating frequency of the transceiver path is determined (the power amplifier, low noise amplifier, and transceiver can all operate at the corresponding frequency).

[0093] In addition, the number of transmit and receive paths can be the same as or different from the number of antennas, such as Figure 6 As shown, the number of transceiver paths is M, and the number of antennas is N. For example, taking the terminal device as a mobile phone, the number of antennas in the embodiment of the present application is at least 4, that is, N is greater than or equal to 4, so that each transmission signal can achieve point focusing; at the same time, the positions of the antennas in the mobile phone are different from each other.

[0094] It should be noted that the number of antennas and transceiver paths in the embodiment of the present application depends on how large the terminal device (for example, DUT) is and how many paths can be set. Using more transmit / receive paths can achieve greater power transmission and a longer communication distance. By way of example, the number of transceiver paths can be 6 and the number of antennas can be 6; in addition, the transceiver path in the embodiment of the present application may include a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna, that is, the transmitting and receiving share the same antenna; when the number of transceiver paths is multiple, multiple transceiver paths can operate at the same frequency.

[0095] The embodiment of the present application is connected to multiple antennas through a transceiver path, and the distribution positions of the antennas are different, forming a multi-path transceiver / receiver antenna. Optionally, the multi-path transceiver / receiver antenna can be integrated on a terminal device (such as a mobile phone); by adding multiple transmitting and receiving circuits and multiple antennas with different distribution positions in the terminal device, when the signal transmitted by the network device reaches different antennas of the terminal device, there are differences in signal characteristics (for example, phase difference and amplitude difference), and then when the signal is transmitted through multiple antennas, the path of each transmitted signal can bypass the target object and achieve focusing at the corresponding position.

[0096] In the embodiment of the present application, the received signal may include a broadcast signal from the network device that is not blocked by the target object; for example, when the network device sends a broadcast signal, due to the blockage of the target object, some antennas of all antennas of the terminal device do not receive the broadcast signal, and the signal processing component cannot obtain the received signal of the part of the antenna. Figure 7 As shown, taking the indoor scene as an example, when the target object is close to the terminal device, the target object will block the signal transmitted by the network device, and some of the direct signals of the network device cannot reach the antenna of the terminal device due to being blocked by the target object. That is, in response to the terminal device currently meeting the specific absorption rate control condition, the signal processing component obtains the receiving signals of multiple antennas (part of the antennas) respectively through the transceiver path, and the received signals are signals from the network device that are not blocked by the target object.

[0097] In some examples, taking the network device as a base station, the received signal may refer to the broadcast signal sent by the base station received by the antenna of the terminal device. Furthermore, when there is no obstruction between the terminal device and the base station (no target object such as a human body), the receiving path of the terminal device can receive the broadcast signal of the base station; and when the target object such as a human body is close to the terminal device, the human body blocks the signal of the base station, and the base station signal received by the receiving path of the terminal device changes (part of the direct signal of the base station cannot reach the receiving antenna of the terminal device because it is blocked by the human body).

[0098] Step 404, obtain signal characteristic parameters of the received signal, process the signal characteristic parameters, and determine the transmission parameters of the transceiver path; the transmission parameters are used to indicate that the transmission signals of multiple antennas are focused on the network device along the corresponding target paths, so that the absorption rate hotspot area formed by the focusing of each transmission signal bypasses the target object; the target path includes the reverse path of the transmission path of the network device to send the broadcast signal.

[0099] Specifically, after obtaining the received signal, the signal processing component can obtain the signal characteristic parameters of the received signal; in one embodiment, the signal characteristic parameters may include the amplitude of the received signal and the phase of the received signal. Different antennas are located at different locations in the terminal device, and thus the signals transmitted by the network device have phase differences and amplitude differences when they reach different antennas of the terminal device.

[0100] In an embodiment of the present application, the signal processing component can extract the amplitude and phase of the received signal (the broadcast signal arriving at the antenna of the terminal device); illustratively, the signal characteristic parameters can be obtained through the amplitude / phase detection function module on the transceiver path; optionally, the amplitude / phase detection function module can be implemented using a transceiver (Transceiver), which is responsible for processing the signal, such as amplitude phase detection.

[0101] Further, such as Figure 8 As shown, taking the indoor scene as an example, after obtaining the signal characteristic parameters of the received signal, the signal processing component can process the signal characteristic parameters to determine the transmission parameters of the transceiver path, and the transmission parameters can be used to instruct the transmission signals of multiple antennas to focus on the network device along the corresponding target paths, so that the specific absorption rate hotspot area (i.e., SAR hotspot area) formed by the focusing of each transmission signal bypasses the target object. The target path may include the reverse path of the transmission path of the broadcast signal sent by the network device, that is, the transmission signal is transmitted in the reverse direction along the transmission path of the broadcast signal.

[0102] In one embodiment, the transmission parameter may include an amplitude of the transmission signal and a phase of the transmission signal. In some examples, the transmission signal may be a radio frequency signal.

[0103] Exemplarily, the transmission signals of multiple antennas are respectively focused on the network device along the corresponding target paths, which may mean that each transmission signal is focused at a receiving antenna of the network device.

[0104] By adding multiple transmitting / receiving circuits to the terminal device, the amplitude and phase of the base station received signal are extracted and corresponding calculations are performed to obtain new transmission parameters. The transmitting circuit of the terminal device uses the new amplitude and phase transmission parameters for transmission. The signal transmitted by the terminal device directly bypasses the human body and does not form a strong signal area in the human body, thereby achieving SAR compliance. At the same time, since the signal of the terminal device is focused at the network device, the energy utilization rate is higher than that of traditional solutions.

[0105] In one embodiment, the signal characteristic parameters include the amplitude of the received signal and the phase of the received signal; the transmission parameters include the amplitude of the transmitted signal and the phase of the transmitted signal; Fig. 9 As shown, the step of processing the signal characteristic parameters to determine the transmission parameters of the transceiver path may include:

[0106] Step 502, performing time inversion processing on the amplitude and phase of the received signal to obtain a time inversion calculation result;

[0107] Step 504: confirm the transmission parameters according to the time inversion calculation result.

[0108] Specifically, the embodiment of the present application obtains new transmission parameters by extracting the amplitude and phase of the broadcast signal of the network device and performing time reversal calculation. Among them, time reversal processing can refer to reversing the time axis and then conjugating the phase. After obtaining the time reversal calculation result, the signal processing component can confirm the transmission parameters, that is, the amplitude of the transmitted signal and the phase of the transmitted signal according to the time reversal calculation result, and then the transceiver path of the terminal device transmits with their respective new amplitudes and phases, so that the transmitted signal is focused at the network device.

[0109] Through the multi-channel receiving / transmitting antennas of the terminal device, the terminal device's transmission signal can be transmitted around the human body, and no SAR hotspot will be formed on the human body. At the same time, since the terminal device's transmission signal is focused and transmitted at the base station, the utilization rate of the RF signal energy is also significantly improved.

[0110] In order to further illustrate the solution of the embodiment of the present application, the implementation of time reversal in the embodiment of the present application is described below by taking the time reversal process between transceiver A and transceiver B as an example:

[0111] Transceiver A first transmits the Beacon signal omnidirectionally, and only a part of the signal reaches transceiver B after direct / reflection. Transceiver B extracts the amplitude and phase of the Beacon signal according to the signal received from transceiver A, and performs time inversion calculation on the signal parameters in the processor, outputs new amplitude and phase parameters, and the transmitter of transceiver B transmits the RF signal according to the new amplitude and phase parameters. The signal of transceiver B will achieve RF power focusing at transceiver A.

[0112] And as Fig.10 As shown in the figure, if there is a human body between transceiver A and transceiver B, the RF signal transmitted by transceiver A is blocked by the human body. At this time, only the reflected signal of the Beacon signal transmitted by transceiver A reaches transceiver B. After the time inversion calculation of transceiver B, the transmission signal of transceiver B will be transmitted along the reverse path of the transmission signal received from transceiver A. At this time, the transmission signal of transceiver B directly bypasses the human body, as shown in the figure. Fig.11 shown.

[0113] In one embodiment, the step of performing time inversion processing on the amplitude of the received signal and the phase of the received signal to obtain the time inversion calculation result includes:

[0114] If the receiving frequency of the transceiver path for the receiving signal is different from the transmitting frequency of the transceiver path for the transmitting signal, then obtaining the channel transmission parameters of the receiving signal and the channel transmission parameters of the transmitting signal;

[0115] Calibrate the channel transmission parameters of the received signal and the channel transmission parameters of the transmitted signal to obtain a calibration result; the calibration result is used to characterize the quantitative compensation of the difference in the channel transmission parameters between the received signal and the transmitted signal;

[0116] Based on the calibration result, a time inversion calculation of the signal characteristic parameters is completed to obtain a time inversion calculation result.

[0117] Specifically, in an embodiment of the present application, there is a situation where the receiving frequency of the transceiver path for the received signal is different from the transmitting frequency of the transceiver path for the transmitted signal. For example, when the terminal device is used in a frequency division duplex (FDD) communication mode, the transceiver path can use a duplexer to isolate the received signal from the transmitted signal, and the duplexer distinguishes the transmitting and receiving paths by frequency, that is, the transmitting and receiving frequencies are different.

[0118] When the frequencies of the terminal device's transmitting signal and receiving signal are different, the signal processing component needs to calibrate the transmission model parameters of the two signals of different frequencies in the channel (for example, channel transmission parameters) when performing time reversal calculations on the terminal device side, thereby ensuring that the terminal device applies the time reversal calculation parameters performed based on the receiving frequency to the transmitting frequency, and can also achieve focusing at the receiving antenna of the network device.

[0119] It should be noted that, in the embodiment of the present application, the basis of time reversal processing is to perform time reversal calculation on the received signal and determine the transmission parameters according to the calculation result; in the transceiver path, if the transmission and reception are of the same frequency, the influence of the channel on the transmission signal and the reception signal is the same, and then the transmission signal parameters can be obtained by using the reception signal. Furthermore, a modem can be used to process the signal and perform time reversal calculation.

[0120] In some examples, the calibration results are used to characterize the quantitative compensation of the difference in channel transmission parameters between the received signal and the transmitted signal; specifically, when the terminal device is used in a frequency division duplex (FDD) communication mode, the transceiver path uses an FDD circuit, and thus the transmitting and receiving frequencies are different. If the characteristics of the received signal are used to describe the transmitted signal, there will be a difference; in the embodiment of the present application, this difference can be quantified through calibration, and then this difference can be compensated during transmission, and then the transmitted signal can be described based on the received signal + the difference.

[0121] In the embodiment of the present application, multiple transmitting and receiving circuits are added to the terminal device, the amplitude and phase of the signal transmitted by the network device are extracted, and time inversion calculation is performed to obtain new transmission parameters. The RF transmitting circuit of the terminal device uses the new amplitude and phase transmission parameters for transmission. The signal transmitted by the terminal device directly bypasses the target object and does not form a strong signal area at the target object, thereby achieving SAR compliance. At the same time, since the signal of the mobile phone is focused at the base station, the energy utilization rate is higher than that of traditional solutions.

[0122] In one embodiment, the SAR control condition also includes that the terminal device is in an initialization state; Fig.12 As shown, the method also includes:

[0123] Step 602: if the received signals of all antennas are obtained through the transceiver path, the signal characteristic parameters of each received signal are respectively obtained, and each signal characteristic parameter is processed to determine each transmission parameter;

[0124] Step 604, based on each transmission parameter, when the transmission signals of each antenna are respectively along the corresponding target path and are all focused on the network device, confirm that the terminal device enters the initialization state.

[0125] Specifically, in the embodiment of the present application, the specific absorption rate control condition currently satisfied by the terminal device also includes that the terminal device is in an initialization state. Fig.13 As shown, taking the indoor scene as an example, the initialization state may refer to that before the terminal device triggers the SAR compliance mechanism (for example, the target object does not exist), the transmission signals of multiple antennas of the terminal device have formed a focused steady state at the network device based on time inversion. In some examples, when the terminal device is in the initialization state, it is in a stable state. After stabilization, it can accurately identify the state of the object approaching and start a new adjustment until a new steady state is formed.

[0126] In order to further illustrate the solution of the embodiment of the present application, a specific example is used below to illustrate, taking the terminal device as a mobile phone (the mobile phone has four antennas, and the four transmission paths and receiving paths are formed by combining the transceiver paths), the network device as a base station, the target object as a user, and the application in an indoor scene as an example:

[0127] ①The base station sends a broadcast signal;

[0128] ② When there is no obstruction between the mobile phone and the base station (no human body blocking), the four receiving channels of the mobile phone receive the broadcast signal of the base station;

[0129] ③ The mobile phone receiving channel performs amplitude and phase detection on the received base station signal through the amplitude / phase detection function; different antennas are located at different positions in the mobile phone, and there are phase and amplitude differences when the broadcast signal emitted by the base station reaches different antennas of the mobile phone.

[0130] ④ Taking the four antennas as antenna 1 / antenna 2 / antenna 3 / antenna 4, the amplitude / phase detection module (eg, transceiver) of the receiving path of antenna 1 of the mobile phone sends the obtained amplitude A1 / phase P1 information to the modem.

[0131] ⑤ The modem performs time inversion calculation on the amplitude A1 and phase P1 signals to obtain new amplitude A2 and phase P2 parameters.

[0132] ⑥ The antenna 1 transmitter of the mobile phone transmits with the new amplitude A2 and phase P2.

[0133] ⑦ The mobile phone's antenna 2 / antenna 3 / antenna 4 also transmits in the manner of steps ② to ⑥, and the transmission signals of the mobile phone's four antennas are focused at the base station.

[0134] ⑧ When a human body is close to a mobile phone, it blocks the base station signal. At this time, the base station signals received by the four receiving paths of the mobile phone change (part of the base station's direct signals are blocked by the human body and cannot reach the mobile phone's receiving antenna). Each receiver of the mobile phone extracts the amplitude and phase based on the received base station signal, and transmits the extracted amplitude and phase data to the modem.

[0135] ⑨ The modem performs time inversion on the amplitude and phase extracted from the receiving path of each receiving antenna to obtain new amplitude and phase.

[0136] ⑩ Each transmitter of the mobile phone transmits with its own new amplitude and phase, and the mobile phone's transmission signal is refocused at the base station.

[0137] As mentioned above, the multi-channel receiving / transmitting antenna of the mobile phone enables the mobile phone's transmission signal to bypass the human body for transmission, and will not form SAR hotspots on the human body. At the same time, since the mobile phone's transmission signal is focused and transmitted at the base station, the utilization rate of the RF signal energy is also significantly increased. It should be noted that the receiver and transmitter in the above steps ① to ⑩ can use the transceiver in the mobile phone to realize the corresponding functions.

[0138] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0139] Based on the same inventive concept, the embodiment of the present application also provides a SAR compliance control device for implementing the SAR compliance control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more SAR compliance control device embodiments provided below can refer to the limitations of the SAR compliance control method above, and will not be repeated here.

[0140] In one embodiment, Fig.14 As shown, a specific absorption rate compliance control device is provided, which is applied to a signal processing component of a terminal device, the signal processing component is connected to multiple antennas through a transceiver path, the number of the transceiver paths is one or more, and the distribution positions of the multiple antennas are different; the device includes:

[0141] The signal receiving module 710 is used to obtain the received signals of the multiple antennas through the transceiver paths respectively in response to the terminal device currently satisfying the specific absorption rate control condition; the specific absorption rate control condition includes that the distance between the terminal device and the target object is less than or equal to the preset distance; the received signal includes a broadcast signal from the network device that is not blocked by the target object;

[0142] The parameter determination module 720 is used to obtain the signal characteristic parameters of the received signal, process the signal characteristic parameters, and determine the transmission parameters of the transceiver path; the transmission parameters are used to indicate that the transmission signals of multiple antennas are focused on the network device along the target path respectively, so that the absorption rate hotspot area formed by the focusing of each transmission signal bypasses the target object; the target path includes the reverse path of the transmission path of the network device to send the broadcast signal.

[0143] In one embodiment, the signal characteristic parameters include the amplitude of the received signal and the phase of the received signal; the transmission parameters include the amplitude of the transmitted signal and the phase of the transmitted signal; the parameter determination module 720 includes:

[0144] A time inversion module is used to perform time inversion processing on the amplitude and phase of the received signal to obtain a time inversion calculation result;

[0145] The parameter confirmation module is used to confirm the transmission parameters according to the time inversion calculation results.

[0146] In one embodiment, the parameter determination module 720 further includes:

[0147] A transmission parameter acquisition module, used for acquiring channel transmission parameters of the received signal and channel transmission parameters of the transmitted signal if the receiving frequency of the transceiver path for the received signal is different from the transmitting frequency of the transceiver path for the transmitted signal;

[0148] A calibration module is used to calibrate the channel transmission parameters of the received signal and the channel transmission parameters of the transmitted signal to obtain a calibration result; the calibration result is used to characterize the quantitative compensation of the difference in channel transmission parameters between the received signal and the transmitted signal;

[0149] The time reversal module is also used to complete the time reversal calculation of the signal characteristic parameters based on the calibration results to obtain the time reversal calculation results.

[0150] In one of the embodiments, the SAR control condition further includes that the terminal device is in an initialization state; and the apparatus further includes:

[0151] The initialization status confirmation module is used to obtain the signal characteristic parameters of each received signal respectively if the received signals of all antennas are obtained through the transceiver path, and process each signal characteristic parameter to determine each transmission parameter; and based on each transmission parameter, when the transmission signals of each antenna are respectively along the corresponding target path and are focused on the network device, confirm that the terminal device enters the initialization state.

[0152] In one of the embodiments, the preset distance is determined based on the terminal device's compliance requirements for the target object's specific absorption rate; the specific absorption rate control condition also includes that the distance between the terminal device and the network device is less than or equal to a distance threshold.

[0153] Each module in the above-mentioned SAR compliance control device can be implemented in whole or in part by software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0154] In one embodiment, a signal processing component is provided, the signal processing component is connected to a plurality of antennas through a transceiver path, the number of the transceiver paths is one or more, and the plurality of antennas are distributed at different positions;

[0155] The signal processing component is used to implement the steps of the above method.

[0156] In one embodiment, the signal processing component includes a modem and a transceiver connected to the modem; the transceiver is connected to the plurality of antennas via a transceiver path;

[0157] The transceiver is used to receive and obtain the signal characteristic parameters of the received signal; the modem is used to process the signal characteristic parameters to obtain the transmission parameters.

[0158] Specifically, in the terminal device of the embodiment of the present application, the modem is directly connected to the transceiver, the modem controls the transceiver, and the modem is responsible for processing the data received and transmitted by the transceiver.

[0159] In one embodiment, a terminal device is provided, including the above-mentioned signal processing component, and also including a transceiver path and multiple antennas; the signal processing component is connected to the multiple antennas through the transceiver path, the number of the transceiver paths is one or more, and the distribution positions of the multiple antennas are different.

[0160] In one embodiment, the transceiver path includes a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna;

[0161] The number of the transceiver path is one, and the multiple antennas include at least four antennas; the terminal device also includes a first switching component and a second switching component;

[0162] The signal processing component is connected to the first switching component through the receiving branch and the transmitting branch respectively; the first switching component is used to switch to the transmitting branch being turned on or the receiving branch being turned on according to the signal sent by the signal processing component;

[0163] The first switching component is connected to each antenna through the second switching component. The second switching component is used to switch to the corresponding antenna to be connected to the transmitting branch or the receiving branch according to the signal sent by the signal processing component.

[0164] Specifically, if Fig.15 As shown, the transceiver path includes a receiving branch and a transmitting branch, the receiving branch and the transmitting branch share the same antenna, and the number of the transceiver path is one; the multiple antennas include at least 4 antennas, thereby being able to achieve point focusing.

[0165] The terminal device also includes a first switching component and a second switching component; wherein the signal processing component is connected to the first switching component through a receiving branch and a transmitting branch respectively; the first switching component is used to switch to the transmitting branch being turned on or the receiving branch being turned on according to the signal sent by the signal processing component; the first switching component is connected to each antenna respectively through the second switching component, and the second switching component is used to switch to the corresponding antenna and the transmitting branch being turned on or the receiving branch being turned on according to the signal sent by the signal processing component.

[0166] It should be noted that the second switching component is used to switch between multiple antennas to achieve the transmission branch and the receiving branch sharing the antenna. In some examples, the second switching component can be implemented by using corresponding switches and other devices, which is not limited in this application.

[0167] In one of the embodiments, the terminal device is applied to a time division duplex communication mode, and the first switching component includes a single-path conducting switching device;

[0168] The terminal device is applied to the frequency division duplex communication mode, and the first switching component includes a duplexer.

[0169] Specifically, the terminal device is applied to the time division duplex communication mode, the transceiver path adopts the TDD radio frequency circuit, and the first switching component includes a single-path conductive switching device. In some examples, it can be implemented by a single-pole double-throw switch (Single Pole Dual Throw, SPDT).

[0170] The terminal device is applied to the frequency division duplex communication mode, the transceiver path adopts the FDD radio frequency circuit, and the first switching component uses a duplexer to achieve the isolation of the receiving signal and the transmitting signal. Furthermore, the duplexer isolates the transmitting signal from the receiving signal to ensure that the receiving and transmitting signals work normally at the same time.

[0171] In one embodiment, if Fig.16 As shown, the multiple antennas include at least four antennas; the number of transceiver paths is the same as the number of antennas, and the operating frequencies of the transceiver paths are the same;

[0172] The terminal device further includes a plurality of switching components, each of which is connected to each of the transceiver paths in a one-to-one correspondence, and each of which is connected to each of the antennas in a one-to-one correspondence;

[0173] The transceiver path includes a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna; the signal processing component is connected to the switching component through the transmitting branch and the receiving branch respectively, and the switching component is used to switch to the corresponding antenna and the transmitting branch to be connected or the receiving branch to be connected according to the signal sent by the signal processing component.

[0174] Specifically, the multiple antennas include at least four antennas, so that point focusing can be achieved. The number of transceiver paths is the same as the number of antennas, and the operating frequency of each transceiver path is the same; the terminal device also includes multiple switching components, each switching component is connected to each transceiver path in a one-to-one correspondence, and each switching component is connected to each antenna in a one-to-one correspondence; further, the transceiver path includes a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna; the signal processing component is connected to the switching component through the transmitting branch and the receiving branch respectively, and the switching component is used to switch to the corresponding antenna and the transmitting branch to be connected or the receiving branch to be connected according to the signal sent by the signal processing component.

[0175] In one of the embodiments, the terminal device is applied to a time division duplex communication mode, and the switching component includes a single-path conducting switching device;

[0176] Specifically, the signal sent by the signal processing component may refer to a switching signal. Fig.17 As shown, taking the number of antennas as 4 and the switching component as a single-pole double-throw switch (SPDT) as an example, the transmitting branch may include a power amplifier PA, and the receiving branch may include a low-noise amplifier LAN; the transceiver Transceiver outputs a signal to the power amplifier PA, and the signal output of the PA enters the switching component SPDT, and then enters the antenna to form a transmitting branch; the branch where the low-noise amplifier LNA is located is the receiving branch, and the signal passes from the antenna through the switching component SPDT, enters the low-noise amplifier LNA, and then enters the transceiver Transceiver.

[0177] It should be noted that the switching component SPDT can respond to a switching signal, and the switching signal can be output by the transceiver or the modem.

[0178] Further, such as Fig.18 As shown, the number of antennas may also be 6, and the 6 antennas are distributed at different positions of the terminal device.

[0179] In one of the embodiments, the terminal device is applied to the frequency division duplex communication mode, and the switching component includes a duplexer.

[0180] Specifically, the terminal device is used in a frequency division duplex (FDD) communication mode, and the switching component is implemented using a duplexer. Fig.19 As shown, taking the number of antennas as 4 and the switching component as a duplexer as an example, the transmitting branch may include a power amplifier PA, and the receiving branch may include a low noise amplifier LAN; the receiving end of the duplexer is connected to the output end of the power amplifier PA, the transmitting end of the duplexer is connected to the input end of the low noise amplifier LAN, and the antenna port of the duplexer is connected to the antenna.

[0181] In one embodiment, a terminal device is provided, whose internal structure diagram can be as follows: Fig. 20 As shown. The terminal device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. Among them, the processor of the terminal device is used to provide computing and control capabilities. The memory of the terminal device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the terminal device is used to exchange information between the processor and the external device. The communication interface of the terminal device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method for controlling the compliance of the specific absorption rate is implemented. The display unit of the terminal device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the terminal device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the terminal device shell, or an external keyboard, touchpad or mouse.

[0182] Those skilled in the art will understand that Fig. 20 The structure shown in the figure is only a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the terminal device to which the scheme of the present application is applied. The specific terminal device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0183] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0184] In one embodiment, a computer program product is provided, comprising a computer program, which implements the steps of the above method when executed by a processor.

[0185] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0186] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0187] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for controlling specific absorption rate compliance, characterized in that: A signal processing component applied to a terminal device, wherein the signal processing component is connected to a plurality of antennas via a transceiver path, the number of the transceiver paths is one or more, and the plurality of antennas are distributed at different locations; the method comprising: In response to the terminal device currently satisfying a specific absorption rate control condition, respectively acquiring received signals of the plurality of antennas through the transceiver path; the specific absorption rate control condition includes that the distance between the terminal device and the target object is less than or equal to a preset distance; and the received signal includes a broadcast signal from a network device that is not blocked by the target object; Acquire signal characteristic parameters of the received signal, process the signal characteristic parameters, and determine the transmission parameters of the transceiver path; the transmission parameters are used to indicate that the transmission signals of the plurality of antennas are respectively focused on the network device along corresponding target paths, so that the specific absorption rate hotspot area formed by the focusing of each of the transmission signals bypasses the target object; the target path includes a reverse path of the transmission path of the network device to send the broadcast signal; The signal characteristic parameters include the amplitude of the received signal and the phase of the received signal; the transmission parameters include the amplitude of the transmitted signal and the phase of the transmitted signal; The step of processing the signal characteristic parameters to determine the transmission parameters of the transceiver path includes: Performing time inversion processing on the amplitude of the received signal and the phase of the received signal to obtain a time inversion calculation result; The transmission parameters are confirmed according to the time reversal calculation result.

2. The method according to claim 1, characterized in that The step of performing time inversion processing on the amplitude of the received signal and the phase of the received signal to obtain a time inversion calculation result comprises: If the receiving frequency of the transceiver path for the receiving signal is different from the transmitting frequency of the transceiver path for the transmitting signal, then acquiring a channel transmission parameter of the receiving signal and a channel transmission parameter of the transmitting signal; Calibrate the channel transmission parameters of the received signal and the channel transmission parameters of the transmitted signal to obtain a calibration result; the calibration result is used to characterize the quantitative compensation of the difference in the channel transmission parameters between the received signal and the transmitted signal; A time inversion calculation of the signal characteristic parameter is completed based on the calibration result to obtain the time inversion calculation result.

3. The method according to claim 1, characterized in that The specific absorption rate control condition also includes that the terminal device is in an initialization state; the method also includes: If the received signals of all the antennas are obtained through the transceiver path, the signal characteristic parameters of each received signal are respectively obtained, and each signal characteristic parameter is processed to determine each transmission parameter; Based on each of the transmission parameters, when the transmission signals of each of the antennas are respectively along the corresponding target paths and are focused on the network device, it is confirmed that the terminal device enters the initialization state.

4. The method according to any one of claims 1 to 3, characterized in that The preset distance is determined based on the terminal device's compliance requirement for the target object's specific absorption rate; the specific absorption rate control condition also includes that the distance between the terminal device and the network device is less than or equal to a distance threshold.

5. A specific absorption rate compliance control device, characterized in that: A signal processing component applied to a terminal device, wherein the signal processing component is connected to a plurality of antennas via a transceiver path, the number of the transceiver paths is one or more, and the distribution positions of the plurality of antennas are different; the device comprises: A signal receiving module, configured to obtain received signals of the plurality of antennas through the transceiver path in response to the terminal device currently satisfying a specific absorption rate control condition; the specific absorption rate control condition includes that the distance between the terminal device and the target object is less than or equal to a preset distance; and the received signal includes a broadcast signal from a network device that is not blocked by the target object; A parameter determination module, used to obtain the signal characteristic parameters of the received signal, process the signal characteristic parameters, and determine the transmission parameters of the transceiver path; the transmission parameters are used to indicate that the transmission signals of the multiple antennas are respectively focused on the network device along the target path, so that the specific absorption rate hotspot area formed by the focus of each of the transmission signals bypasses the target object; the target path includes the reverse path of the transmission path of the network device to send the broadcast signal; The signal characteristic parameters include the amplitude of the received signal and the phase of the received signal; the transmission parameters include the amplitude of the transmitted signal and the phase of the transmitted signal; the parameter determination module includes: A time inversion module, used to perform time inversion processing on the amplitude of the received signal and the phase of the received signal to obtain a time inversion calculation result; The parameter confirmation module is used to confirm the transmission parameters according to the time inversion calculation result.

6. A signal processing component, characterized in that The signal processing component is connected to a plurality of antennas via a transceiver path, the number of the transceiver paths is one or more, and the distribution positions of the plurality of antennas are different; The signal processing component is used to implement the steps of any one of the methods of claims 1 to 4.

7. The signal processing component according to claim 6, characterized in that The signal processing component includes a modem and a transceiver connected to the modem; the transceiver is connected to the multiple antennas through the transceiver path; The transceiver is used to receive and obtain the signal characteristic parameter of the received signal; The modem is used for processing the signal characteristic parameters to obtain the transmission parameters.

8. A terminal device, characterized in that: It includes the signal processing component as described in claim 6 or 7, and also includes a transceiver path and multiple antennas; the signal processing component is connected to the multiple antennas through the transceiver path, the number of the transceiver paths is one or more, and the distribution positions of the multiple antennas are different.

9. The terminal device according to claim 8, characterized in that: The transceiver path includes a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna; The number of the transceiver path is one, and the multiple antennas include at least four antennas; the terminal device also includes a first switching component and a second switching component; The signal processing component is connected to the first switching component through the receiving branch and the transmitting branch respectively; the first switching component is used to switch to the transmitting branch being turned on or the receiving branch being turned on according to the signal sent by the signal processing component; The first switching component is connected to each of the antennas through the second switching component, and the second switching component is used to switch to the corresponding antenna to be connected to the transmitting branch or the receiving branch according to the signal sent by the signal processing component.

10. The terminal device according to claim 9, characterized in that: The terminal device is applied to a time division duplex communication mode, and the first switching component includes a single-path conducting switching device; The terminal device is applied to a frequency division duplex communication mode, and the first switching component includes a duplexer.

11. The terminal device according to claim 8, characterized in that: The multiple antennas include at least four antennas; the number of the transceiver paths is the same as the number of the antennas, and the operating frequencies of the transceiver paths are the same; The terminal device further comprises a plurality of switching components, each of which is connected to each of the transceiver paths in a one-to-one correspondence, and each of which is connected to each of the antennas in a one-to-one correspondence; The transceiver path includes a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna; the signal processing component is connected to the switching component through the transmitting branch and the receiving branch respectively, and the switching component is used to switch to the corresponding antenna being connected to the transmitting branch or the receiving branch being connected according to the signal sent by the signal processing component.

12. The terminal device according to claim 11, characterized in that: The terminal device is applied to the time division duplex communication mode, and the switching component includes a single-path conducting switching device; The terminal device is applied to the frequency division duplex communication mode, and the switching component includes a duplexer.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

14. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

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