CN115622583A

CN115622583A - Specific absorption rate compliance control method and device and terminal equipment

Info

Publication number: CN115622583A
Application number: CN202211222309.6A
Authority: CN
Inventors: 彭博; 马金山
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-01-17

Abstract

The application relates to a specific absorption rate compliance control method, a specific absorption rate compliance control device and terminal equipment; the specific absorption rate compliance control method comprises the following steps: respectively acquiring receiving signals of a plurality of antennas through a transceiving path in response to that the terminal equipment currently meets a specific absorption rate control condition; the received signal comprises a broadcast signal from the network device that is not occluded by the target object; acquiring signal characteristic parameters of a received signal, processing the signal characteristic parameters, and determining transmitting parameters of a transceiving channel; the transmission parameters are used for indicating the transmission signals of the plurality of antennas to be respectively focused at the network equipment along corresponding target paths, so that a specific absorption rate hot spot area formed by focusing of the transmission signals bypasses a target object; the target path includes a reverse path of a transmission path in which the network device transmits the broadcast signal. The SAR compliance can be realized, and the communication performance is ensured.

Description

Specific absorption rate compliance control method and device and terminal equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for controlling specific absorption rate compliance, and a terminal device.

Background

With the continuous development of wireless communication technology, people increasingly use electronic equipment, particularly smart phones, and when the smart phones are used, the smart phones can generate electromagnetic radiation in the communication process; in order to ensure the safety of people when using electronic equipment and avoid the phenomenon that the human body absorbs overhigh electromagnetic wave energy, certain safety standards are generally provided; for example, electronic devices at home and abroad need to satisfy the requirement of electromagnetic wave Specific Absorption Rate (SAR) compliance. SAR is the electromagnetic radiation energy absorbed by a unit mass of human tissue per unit time, and may also be referred to as an electromagnetic wave absorption ratio.

Currently, the main approach to the SAR compliance problem is power back-off (reducing the radio frequency power), however, this approach may affect the communication performance of the electronic device.

Disclosure of Invention

In view of the above, it is necessary to provide a specific absorption rate compliance control method, apparatus and terminal device that can ensure communication performance in order to solve the above technical problems.

In a first aspect, the present application provides a specific absorption rate compliance control method, which is applied to a signal processing component of a terminal device, where the signal processing component is connected to multiple antennas through one or more transceiving paths, and the distribution positions of the multiple antennas are different; the method comprises the following steps:

respectively acquiring receiving signals of a plurality of antennas through a transceiving path in response to that the terminal equipment currently meets a specific absorption rate control condition; the specific absorption rate control condition comprises that the distance between the terminal equipment and the target object is less than or equal to a preset distance; the received signal comprises a broadcast signal from the network device that is not occluded by the target object;

acquiring signal characteristic parameters of a received signal, processing the signal characteristic parameters, and determining transmitting parameters of a transceiving channel; the transmission parameters are used for indicating the transmission signals of the plurality of antennas to be respectively focused at the network equipment along corresponding target paths, so that a specific absorption rate hot spot area formed by focusing of the transmission signals bypasses a target object; the target path includes a reverse path of a transmission path in which the network device transmits the broadcast signal.

In one embodiment, the signal characteristic parameters include an amplitude of the received signal and a phase of the received signal; the transmission parameters comprise the amplitude of the transmission signal and the phase of the transmission signal;

the step of processing the signal characteristic parameters and determining the transmitting parameters of the transceiving path comprises the following steps:

carrying out time reversal processing on the amplitude of the received signal and the phase of the received signal to obtain a time reversal calculation result;

and confirming the emission parameters according to the time reversal calculation result.

In one embodiment, the step of performing time reversal processing on the amplitude of the received signal and the phase of the received signal to obtain a time reversal calculation result includes:

if the receiving frequency of the receiving and transmitting channel aiming at the received signal is different from the transmitting frequency of the transmitting and receiving channel aiming at the transmitted signal, acquiring the channel transmission parameter of the received signal and the channel transmission parameter of the transmitted signal;

calibrating the channel transmission parameters of the received signals and the channel transmission parameters of the transmitted signals to obtain calibration results; the calibration result is used for representing the quantitative compensation of the channel transmission parameter difference between the received signal and the transmitted signal;

and finishing time reversal calculation of the signal characteristic parameters based on the calibration result to obtain a time reversal calculation result.

In one embodiment, the specific absorption rate control condition further comprises that the terminal device is in an initialization state; the method further comprises the following steps:

if the receiving signals of all the antennas are obtained through the transceiving channels, respectively obtaining the signal characteristic parameters of all the receiving signals, and processing all the signal characteristic parameters to determine all the transmitting parameters;

and confirming that the terminal equipment enters an initialization state under the condition that the transmitting signals of the antennas respectively follow the corresponding target paths and are focused on the network equipment by the aid of the transmitting parameters.

In one embodiment, the preset distance is determined according to the specific absorption rate compliance requirement of the terminal equipment on the target object; the specific absorption rate control condition further includes that a distance between the terminal device and the network device is less than or equal to a distance threshold.

In a second aspect, the present application further provides a specific absorption rate compliance control device, which is applied to a signal processing component of a terminal device, where the signal processing component is connected to a plurality of antennas through one or more transceiving paths, and the distribution positions of the plurality of antennas are different; the device comprises:

the signal receiving module is used for responding to the condition that the terminal equipment currently meets the specific absorption rate control condition and respectively acquiring receiving signals of a plurality of antennas through a receiving and transmitting path; the specific absorption rate control condition comprises that the distance between the terminal equipment and the target object is less than or equal to a preset distance; the received signal comprises a broadcast signal from the network device that is not occluded by the target object;

the parameter determining module is used for acquiring the signal characteristic parameters of the received signals, processing the signal characteristic parameters and determining the transmitting parameters of the transceiving channel; the transmission parameters are used for indicating the transmission signals of the plurality of antennas to be respectively focused at the network equipment along the target path, so that a specific absorption rate hot spot area formed by the focusing of each transmission signal bypasses a target object; the target path includes a reverse path of a transmission path in which the network device transmits the broadcast signal.

In a third aspect, the present application further provides a signal processing component, where the signal processing component is connected to multiple antennas through one or more transceiving paths, and the distribution positions of the multiple antennas are different;

a signal processing component for implementing the steps of the above method.

In one embodiment, the signal processing component comprises a modem, and a transceiver connected to the modem; the transceiver is connected with a plurality of antennas through a transceiving path;

the transceiver is used for receiving and acquiring the signal characteristic parameters of the received signals; the modem is used for processing the signal characteristic parameters to obtain the transmission parameters.

In a fourth aspect, the present application further provides a terminal device, including the above signal processing component, further including a transceiver path and a plurality of antennas; the signal processing assembly is connected with the plurality of antennas through the transceiving paths, the number of the transceiving paths is one or more, and the distribution positions of the plurality of antennas are different.

In one embodiment, the transceiving path comprises a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna;

the number of the transceiving paths is one, and the plurality of antennas comprise at least four antennas; the terminal equipment also comprises a first switching component and a second switching component;

the signal processing assembly is connected with the first switching assembly through the receiving branch and the transmitting branch respectively; the first switching component is used for switching to the conduction of the transmitting branch or the conduction of the receiving branch according to the signal sent by the signal processing component;

the first switching assembly is respectively connected with each antenna through the second switching assembly, and the second switching assembly is used for switching to the corresponding antenna to be conducted with the transmitting branch or the receiving branch according to the signal sent by the signal processing assembly.

In one embodiment, the terminal device is applied to a time division duplex communication mode, and the first switching component comprises a one-way conducting switching device;

the terminal device is applied in a communication mode of frequency division duplexing and the first switching component comprises a duplexer.

In one embodiment, the plurality of antennas comprises at least four antennas; the number of the transceiving paths is the same as that of the antennas, and the working frequency of each transceiving path is the same;

the terminal equipment also comprises a plurality of switching components, each switching component is connected with each receiving and transmitting channel in a one-to-one correspondence manner, and each switching component is connected with each antenna in a one-to-one correspondence manner;

the receiving and transmitting path comprises a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna; the signal processing assembly is connected with the switching assembly through the transmitting branch and the receiving branch respectively, and the switching assembly is used for switching to a corresponding antenna to be conducted with the transmitting branch or the receiving branch according to a signal sent by the signal processing assembly.

In one embodiment, the terminal device is applied to a time division duplex communication mode, and the switching component comprises a one-way conducting switching device;

the terminal device is applied in a communication mode of frequency division duplexing and the switching component comprises a duplexer.

In a fifth aspect, the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method described above.

In a sixth aspect, the present application also provides a computer program product comprising a computer program which, when executed by a processor, performs the steps of the method described above.

The specific absorption rate compliance control method, the device and the terminal equipment are connected with a plurality of antennas through a transceiving path, the distribution positions of the antennas are different, a plurality of paths of transceiving antennas are formed, further, under the condition that the terminal equipment meets the specific absorption rate control condition, signal characteristic parameters are obtained by extracting the signal characteristics of the broadcast signals sent by the network equipment, the transmission parameters are obtained based on the signal characteristic parameters, the transmission parameters are used for indicating the transmission signals of the antennas, so that the transmission signals are focused at the network equipment along corresponding target paths, the target paths comprise reverse paths of the transmission paths of the broadcast signals sent by the network equipment, namely the transmission signals directly bypass the target object, strong signal areas (such as specific absorption rate hot spot areas) cannot be formed at the target object, the compliance of the specific absorption rate SAR is realized, meanwhile, the utilization rate of radio frequency signal energy is remarkably improved due to the fact that the transmission signals of the terminal equipment realize focused transmission at the network equipment.

Drawings

FIG. 1A is a schematic diagram of a transceiver in a time reversal system;

FIG. 1B is a schematic diagram of beacon signal transmission in a time reversal system;

FIG. 1C is a schematic diagram of the working principle of a time reversal system;

FIG. 2A is a schematic diagram of a transceiver circuit of the device under test;

FIG. 2B is a schematic diagram of the position of an antenna in a device under test;

FIG. 2C is a distribution of SAR values for antennas in a device under test;

FIG. 3 is a diagram of an exemplary implementation of a specific absorption compliance control method;

FIG. 4 is a schematic flow chart diagram of a method for controlling specific absorption rate compliance according to one embodiment;

FIG. 5 is a diagram illustrating a target object and a terminal device in one embodiment;

FIG. 6 is a diagram illustrating a terminal device according to an embodiment;

FIG. 7 is a schematic diagram of a target object occlusion signal in one embodiment;

FIG. 8 is a transmission diagram illustrating the transmission of the transmit signal focus in one embodiment;

FIG. 9 is a flowchart illustrating the steps of processing signal characteristic parameters according to one embodiment;

FIG. 10 is a schematic diagram of the operation of time reversal in one embodiment;

FIG. 11 is a schematic diagram of a time reversal operation in another embodiment;

FIG. 12 is a flowchart illustrating a step of confirming that the terminal device enters an initialization state in one embodiment;

FIG. 13 is a diagram illustrating an example of an initialization state of a terminal device;

FIG. 14 is a block diagram of the specific absorption rate compliance control device in one embodiment;

FIG. 15 is a block diagram showing a configuration of a terminal device in one embodiment;

fig. 16 is a block diagram showing the configuration of a terminal device in another embodiment;

FIG. 17 is a diagram illustrating a structure of a transceiving path and an antenna in a terminal device according to an embodiment;

fig. 18 is a schematic diagram of a transceiving path and an antenna structure in a terminal device according to another embodiment;

FIG. 19 is a diagram showing a transceiving path and a duplexer in a terminal device according to an embodiment;

fig. 20 is an internal configuration diagram of a terminal device in one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

SAR (Specific Absorption Rate) is an international general index for evaluating the influence of radio waves on human bodies, belongs to an safety standard, and is strictly supervised by regulatory agencies of various countries/regions around the world. The two current international mainstream standards are FCC (Federal Communications Commission, united states) at 1.6W/Kg (watts/Kg) and european union (CE) at 2.0W/Kg, respectively.

The SAR value is strongly related to parameters such as radio frequency transmission power, antenna efficiency, radiation field shape of an antenna and the like, and is in direct proportion to the conducted power, the higher the conducted power is, the higher the SAR value is, and the most common means for solving the SAR standard exceeding in the mobile phone industry at present is to reduce the radio frequency power (power back-off).

For electromagnetic wave signals with different frequencies, the requirements of SAR regulatory agencies in various regions are slightly different, taking FCC as an example, for radio frequency signals below 3GHz, the average SAR value within a time period of 100 seconds is required not to exceed the upper limit requirement of 1.6W/Kg. However, the real-time SAR value may exceed 1.6W/Kg, and it is only necessary to ensure that the average SAR value within the time window (e.g., 100 seconds of FCC) required by the regulations is within the range required by the regulations.

Before describing the embodiments of the present application, the background of the application in the embodiments of the present application is described to facilitate understanding of the present application.

Illustratively, fig. 1A shows a Time Reversal (TR) system, which includes a transceiver 102 and a transceiver 104, as shown in fig. 1B, the transceiver 104 first transmits a Beacon (Beacon) signal in all directions, only a part of the signal arrives at the transceiver 102 after direct/reflected, the transceiver 102 adjusts parameters of its transmitted signal according to the received Beacon signal of the transceiver 104, and the transmitter of the transceiver 102 performs radio frequency signal transmission according to the adjusted parameters. The transmit signal of transceiver 102 will achieve radio frequency power focusing at transceiver 104 (as shown in fig. 1C).

Ideally, the transmitted signal energy of the transceiver 102, after being directed/reflected, can be focused at the antenna of the transceiver 104. The higher the degree of energy concentration, the higher the emission efficiency of the signal. The area of the energy focus area which can be achieved at present is about 4cm by 4 cm.

Fig. 2A is a schematic structural diagram of a transceiver circuit of a Device Under Test (DUT), and as shown in fig. 2A, the transceiver circuit may include: a transceiver 200, a Power Amplifier (PA) 202, and a Low Noise Amplifier (LNA) 204, and an antenna 206. The Transceiver 200 represents a Transceiver, which can control the transmission frequency of the signal; power amplifier 202 represents the power amplification module of the transmit chain; the low noise amplifier 204 represents the LNA on the receive chain; in addition, fig. 2B is a schematic diagram of the position of the antenna in the DUT, and as shown in fig. 2B, taking the device under test as a handset as an example, 206 represents the position of the antenna in the DUT in a two-dimensional plane of the handset.

For a given conducted power and antenna state, the position of the hot spot (SAR maximum) of SAR is determined, the distribution of SAR is fixed (SAR gradient map), and the SAR value (especially the maximum SAR value) is also determined.

As shown in fig. 2C, the dotted circle in the upper left portion of the DUT can be understood as an equal SAR value distribution graph (the ellipses represent the same SAR value, the further the outer ellipses, the lower the SAR value). The higher the radio frequency power, the higher the hot spot value of SAR (center of the dashed oval circle), the lower the radio frequency power, the lower the hot spot value of SAR, and the requirement of the regulatory body is that the point with the highest SAR value (average SAR value) does not exceed the requirement of the regulation, such as: FCC 1.6W/Kg, CE 2.0W/Kg.

At present, the means for the mobile phone to solve the SAR compliance problem is mainly power backoff (power backoff is to reduce transmission power), but the power backoff affects user experience (data throughput rate is reduced, network access is stuck, and the like), and although a signal transmission system of the mobile phone can transmit higher power, the transmission power of the mobile phone is limited by the SAR compliance, and thus the mobile phone cannot operate in a state of higher transmission power, which wastes performance of the mobile phone.

The specific absorption rate compliance control method provided by the embodiment of the application can be applied to the application environment shown in fig. 3. The communication system may include a network device 302, and the network device 302 may be a device that communicates with a terminal 304 (or referred to as a communication terminal, a terminal device). The network device 302 may provide communication coverage for a particular geographic area and may communicate with terminals 304 located within the coverage area. Optionally, the Network device 302 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Network device (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or a Network-side device such as 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, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, and the like.

In some examples, the network device in the embodiment of the present application may be a base station, and optionally, the base station is an indoor base station, for example, an indoor small base station scenario, where a distance between the terminal device and the base station is short; in other examples, the network device may include an apparatus, such as a system-on-chip, a chip module, having functionality to provide wireless communication for the terminal. The chip system may include a chip, or may include other discrete devices, as examples.

The communication system may also include at least one terminal 304 located within the coverage area of the network device 302. As used herein, a "terminal" is a terminal device that is configured to communicate via a wireless interface, and may be referred to as a "wireless communication terminal," a "wireless terminal," or a "mobile terminal. Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; personal Digital Assistant (PDA) that may include a radiotelephone, pager, internet/intranet access, web browser, notepad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal 304 can refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a PDA, a handheld device with Wireless communication capabilities, 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.

In some examples, the terminal device in the embodiment of the present application may be suitable for indoor applications, and taking the network device as an indoor base station and the terminal device as a mobile phone, for example, in an indoor small base station scenario, a distance range between the mobile phone and the base station is about 10 meters. In other examples, the terminal device may include means for wireless communication functionality, such as a system-on-chip, a chip module. Illustratively, the chip system may include a chip and may also include other discrete devices.

It should be noted that the technical solutions of the embodiments of the present application may be applied to various communication systems, for example: global System for 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 GSM Evolution (Enhanced Data Rate for GSM Evolution, EDGE), long Term Evolution (Long Term Evolution, LTE) System, LTE Frequency Division Duplex (FDD) System, LTE Time Division Duplex (TDD), universal Mobile Telecommunications System (UMTS), worldwide Interoperability for Microwave Access (WiMAX), radio Access (WiMAX) System, wiMAX 6 (New Generation, NR 6G System, or other communication System.

In one embodiment, as shown in fig. 4, a specific absorption rate compliance control method is provided, which is described by taking the method as an example applied to the terminal in fig. 1, and the method can be applied to a signal processing component of a terminal device, where the signal processing component is connected to a plurality of antennas through transceiving paths, the number of the transceiving paths is one or more, and the distribution positions of the plurality of antennas are different; the method comprises the following steps:

step 402, in response to that the terminal device currently satisfies the specific absorption rate control condition, respectively acquiring the received signals of a plurality of antennas through a transceiving path; the specific absorption rate control condition comprises that the distance between the terminal equipment 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 occluded by the target object.

Wherein, the specific absorption rate control condition may refer to a trigger condition for instructing the terminal device to execute the SAR compliance mechanism; as shown in fig. 5, taking an example that the target object is a user, when the user approaches a transmitting antenna of the terminal device, the terminal device senses that the user approaches, and if the SAR is too high, the terminal device may trigger a mechanism for turning on SAR reduction (for example, a mechanism for actively turning on SAR reduction), so as to ensure that the SAR is compliant when the user approaches. Further, as shown in fig. 5, the distribution positions of the plurality of antennas in the terminal device are different.

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

In one embodiment, the preset distance is determined according to the specific absorption rate compliance requirement of the terminal equipment on the target object; the specific absorption rate control condition further comprises that the distance between the terminal equipment and the network equipment is less than or equal to a distance threshold value;

specifically, the preset distance in the embodiment of the present application may be determined according to the specific absorption rate compliance requirement of the terminal device for the target object, for example, a distance that the target object approaches the terminal device until the terminal device is triggered to start the specific absorption rate compliance control.

Optionally, the specific absorption rate control condition may further include that a distance between the terminal device and the network device is less than or equal to a distance threshold; the method and the device are suitable for scenes that the terminal equipment is close to the network equipment in distance; taking a terminal device as a mobile phone and a network device as a base station as an example, when the mobile phone is close to the base station (for example, in an indoor small base station scenario, the distance between the mobile phone and the base station may be only about 10 meters), the terminal device may be triggered to start the specific absorption rate compliance control.

In some examples, the value of the distance threshold is related to the number of transceiving paths of the terminal device and the number of antennas, for example, if the transmission power of each transceiving path is the same, that is, each transceiving path transmits the same power, and then the combined power is large, so that the communication distance may be longer. Further, the value of the distance threshold is related to the difference of the signal characteristics of the signals received by the antennas, if the distance threshold is too large (i.e. too far away), the signals transmitted from "far" to the antennas of the terminal device (e.g. DUT) are regarded as no difference, and multiple antennas (e.g. four antennas) on the terminal device may be regarded as one antenna (the signal characteristics received by the four antennas are identical or the difference is too small); in some examples, the distance threshold may range from less than or equal to 10 meters.

Further, in response to that the terminal device currently satisfies the specific absorption rate control condition, the signal processing component respectively acquires received signals of the plurality of antennas through the transceiving paths; as shown in fig. 6, the terminal device 100 may include a signal processing component 10, where the signal processing component 10 is connected to multiple antennas through one or more transceiving paths, and the multiple antennas are distributed at different positions in the terminal device 100. Illustratively, 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.

The signal processing component 10 may refer to a device capable of processing a received signal and a transmitted signal of an antenna; optionally, the signal processing component may include a Modem (Modem) and a Transceiver (Transceiver) for transceiving a received signal, a transmitted signal, and processing a signal, such as signal characteristic detection, and amplitude phase detection. The modem is used for signal processing, for example, processing the characteristic parameters of the signal, determining the transmission parameters of the transceiving path, and for allocating a plurality of antennas, generating a switching signal, and the like, where the switching signal may be used to switch the antennas to be connected to the corresponding transceiving paths.

Illustratively, the transceiving path may refer to a transmitting/receiving path (or referred to as a transmitting/receiving circuit or referred to as a TX/RX link), the transceiving path may include a Power Amplifier (PA), a Low Noise Amplifier (LNA) and a corresponding switching component, the switching component is configured to conduct the transmitting/receiving path in a corresponding manner to match a communication mode of the terminal device, and the switching component may be configured to respond to a switching signal; in the embodiment of the application, the receiving and transmitting channels are matched with the multiple receiving/transmitting antennas formed by the multiple antennas, so that the same frequency band signal can be transmitted and received respectively, and then the multiple receiving and transmitting channels can work at the same frequency. It should be noted that the operating frequency of the transmitting/receiving antenna is determined after the design of the antenna is determined, the operating frequency may be a design parameter of the antenna, and the operating frequency of the transceiving path is determined (the power amplifier, the low noise amplifier, the transceiver, and the like may operate at corresponding frequencies).

In addition, the number of transceiving paths may be the same as or different from the number of antennas, and as shown in fig. 6, the number of transceiving paths is M, and the number of antennas is N. Exemplarily, taking a terminal device as a mobile phone as an example, 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 realize point focusing; meanwhile, the positions of the antennas on the mobile phone are different from each other.

It should be noted that, in the embodiment of the present application, the number of the antennas and the number of the transceiving paths depend on how large the terminal device (e.g., DUT) is, how many paths can be set, and greater power transmission can be achieved by using more transmitting/receiving paths, and the communication distance is longer, for example, the number of the transceiving paths may be 6, and the number of the antennas may be 6; in addition, the transceiving 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 branch and the transmitting branch share the same antenna; when the number of the transceiving paths is multiple, the multiple transceiving paths can operate at the same frequency.

In the embodiment of the application, the multiple antennas are connected to the transceiving path, and the distribution positions of the antennas are different, so as to form a multi-path transceiving antenna, optionally, the multi-path transceiving antenna can be integrated on a terminal device (for example, a mobile phone); when the terminal equipment is additionally provided with a plurality of transmitting and receiving circuits and a plurality of antennas with different distribution positions, signals transmitted by the network equipment reach different antennas of the terminal equipment, signal characteristic differences (such as phase differences and amplitude differences) exist, and further when the signals are transmitted through the plurality of antennas, paths of the transmitted signals can bypass a target object and focusing can be achieved at corresponding positions.

In the embodiment of the present application, the received signal may include a broadcast signal from the network device that is not occluded by the target object; for example, when the network device sends a broadcast signal, due to the shielding of the target object, a part of antennas in all antennas of the terminal device does not receive the broadcast signal, and the signal processing component cannot acquire the received signals of the part of antennas. Specifically, as shown in fig. 7, taking an indoor scene as an example, when a target object is close to a terminal device, the target object may shield a signal transmitted by the network device, and a part of a direct signal of the network device is shielded by the target object and cannot reach an antenna of the terminal device. In other words, in response to that the terminal device currently satisfies the specific absorption rate control condition, the signal processing component respectively acquires, through the transceiving path, received signals of multiple antennas (partial antennas), where the received signals are signals from the network device that are not blocked by the target object.

In some examples, taking a network device as a base station as an example, the received signal may refer to a broadcast signal transmitted by the base station and received by an antenna of the terminal device. Further, when there is no blocking object between the terminal device and the base station (there is no target object such as human body blocking), the receiving path of the terminal device may receive the broadcast signal of the base station; when a target object such as a human body approaches the terminal device, the human body shields signals of the base station, and signals of the base station received by a receiving path of the terminal device change (due to the fact that part of signals directly transmitted by the base station are shielded by the human body, the signals cannot reach a receiving antenna of the terminal device).

Step 404, acquiring signal characteristic parameters of the received signals, processing the signal characteristic parameters, and determining transmitting parameters of a transmitting-receiving channel; the transmission parameters are used for indicating the transmission signals of the plurality of antennas to be respectively focused at the network equipment along corresponding target paths, so that a specific absorption rate hot spot area formed by focusing of the transmission signals bypasses a target object; the target path includes a reverse path of a transmission path in which the network device transmits the broadcast signal.

Specifically, after the received signal is obtained, the signal processing component may obtain a signal characteristic parameter 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 have different positions at the terminal device, and thus, when signals transmitted by the network device reach different antennas of the terminal device, phase difference and amplitude difference exist.

In the embodiment of the present application, the signal processing component may extract the amplitude and phase of the received signal (the broadcast signal reaching the terminal device antenna); illustratively, the signal characteristic parameters can be obtained by an amplitude/phase detection functional module on a transceiving path; alternatively, the amplitude/phase detection function may be implemented by using a Transceiver (Transceiver) that is responsible for processing signals, such as amplitude and phase detection.

Further, as shown in fig. 8, taking an indoor scenario as an example, after the signal characteristic parameters of the received signal are obtained, the signal processing component may process the signal characteristic parameters to determine the transmission parameters of the transceiving path, where the transmission parameters can be used to instruct transmission signals of multiple antennas to focus on the network device along corresponding target paths, respectively, so that a specific absorption rate hot spot area (SAR hot spot area) formed by focusing of the transmission signals bypasses a target object, and the target path may include a reverse path of a transmission path for the network device to transmit the broadcast signal, that is, the transmission signal is transmitted in a reverse direction along the transmission path of the broadcast signal.

In one embodiment, the transmit parameters may include the amplitude of the transmit signal and the phase of the transmit signal. In some examples, the transmission signal may refer to a radio frequency signal.

For example, the transmission signals of the multiple antennas are focused at the network device along the corresponding target paths respectively, which means that each transmission signal is focused at the receiving antenna of the network device.

The new transmitting parameters are obtained by adding a plurality of transmitting/receiving circuits at the terminal equipment, extracting the amplitude and the phase of the signals received by the base station and carrying out corresponding calculation, the transmitting circuits of the terminal equipment transmit by using the new amplitude and phase transmitting parameters, the signals transmitted by the terminal equipment directly bypass the human body, and a strong signal area cannot be formed in the human body, so that the SAR compliance is realized, and meanwhile, as the signals of the terminal equipment are focused at the network equipment, compared with the traditional scheme, the energy utilization rate is higher.

In one embodiment, the signal characteristic parameters include an amplitude of the received signal and a phase of the received signal; the transmission parameters comprise the amplitude of the transmission signal and the phase of the transmission signal; as shown in fig. 9, the step of processing the signal characteristic parameters to determine the transmission parameters of the transceiving path may include:

step 502, performing time reversal processing on the amplitude of the received signal and the phase of the received signal to obtain a time reversal calculation result;

and step 504, confirming the launching parameters according to the time reversal calculation result.

Specifically, the embodiment of the application acquires new transmission parameters by extracting the amplitude and the phase of the broadcast signal of the network equipment and performing time reversal calculation. Wherein, the time reversal process may refer to time axis inversion followed by phase conjugation. After the signal processing component obtains the time reversal calculation result, the signal processing component can confirm the transmission parameters, namely the amplitude of the transmission signal and the phase of the transmission signal according to the time reversal calculation result, and then the receiving and transmitting channels of the terminal equipment transmit the transmission signal with the new amplitude and phase, so that the transmission signal is focused at the network equipment.

Through the multi-channel receiving/transmitting antenna of the terminal equipment, the transmitting signal of the terminal equipment is transmitted by bypassing the human body, no hot spot of the SAR is formed on the human body, meanwhile, the utilization rate of the radio frequency signal energy is obviously increased because the transmitting signal of the terminal equipment realizes the focusing transmission at the base station.

To further illustrate the solution of the embodiment of the present application, the following describes the implementation of time reversal in the embodiment of the present application with reference to the time reversal process between the transceiver a and the transceiver B as an example:

the transceiver A firstly transmits Beacon signals in all directions, only a part of the signals reach the transceiver B after being directly transmitted/reflected, the transceiver B extracts the amplitude and the phase of the Beacon signals according to the received signals of the transceiver A, time reversal calculation is carried out on the parameters of the signals in the processor, new amplitude and phase parameters are output, and the transmitter of the transceiver B transmits radio frequency signals according to the new amplitude and phase parameters. The signal of transceiver B will achieve radio frequency power focusing at transceiver a.

However, if there is a human body between the transceiver a and the transceiver B, as shown in fig. 10, since the rf signal transmitted by the transceiver a is blocked by the human body, only the reflected part of the Beacon signal transmitted by the transceiver a reaches the transceiver B, and after the time reversal calculation of the transceiver B, the transmission signal of the transceiver B will be transmitted along the reverse path of the transmission signal from the transceiver a received by the transceiver B. The transmission signal of transceiver B now bypasses the human body directly as shown in fig. 11.

if the receiving frequency of the receiving and transmitting channel aiming at the received signal is different from the transmitting frequency of the transmitting and receiving channel aiming at the transmitting signal, acquiring the channel transmission parameter of the receiving signal and the channel transmission parameter of the transmitting signal;

Specifically, in the embodiment of the present application, there are cases where the transceiving path is different from the receiving frequency of the transceiving path for the transmitting signal, for example, when the terminal device is applied in a communication mode of Frequency Division Duplex (FDD), the transceiving path may implement isolation between the receiving signal and the transmitting signal through a duplexer, and the duplexer distinguishes between the transmitting path and the receiving path by frequencies, that is, the transmitting frequency and the receiving frequency are different.

Under the condition that the frequencies of the transmitting signal and the receiving signal of the terminal device are different, when the signal processing assembly performs time reversal calculation on the terminal device side, the transmission model parameters (for example, channel transmission parameters) of the two signals with different frequencies in a channel need to be calibrated, so that the time reversal calculation parameters performed by the terminal device according to the receiving frequency are ensured to be applied to the transmitting frequency, and focusing can be realized at the receiving antenna of the network device.

It should be noted that, in the embodiment of the present application, the basis of the time reversal processing is to perform time reversal calculation through the received signal, and determine the transmission parameter according to the calculation result; in the transceiving path, if the transmitting and receiving are the same frequency, the influence of the channel on the transmitting signal and the receiving signal is the same, and further, the transmitting signal parameter can be obtained by using the receiving signal. Furthermore, a Modem can be adopted to process the signal for time reversal calculation.

In some examples, the calibration results are used to characterize a quantitative compensation of channel transmission parameter differences between the received signal and the transmitted signal; specifically, when the terminal device is applied in a Frequency Division Duplex (FDD) communication mode, the transceiving path adopts an FDD circuit, and then the transmitting and receiving frequencies are different, and if the characteristics of the received signal are used to describe the transmitted signal, there is a difference therebetween; in the embodiment of the present application, the difference can be quantified through calibration, and then the difference is compensated when transmitting, so that the transmitting signal can be described according to the receiving signal + the difference.

According to the embodiment of the application, a plurality of transmitting and receiving circuits are added at the terminal equipment, the amplitude and the phase of the signal transmitted by the network equipment are extracted, time reversal calculation is carried out to obtain new transmitting parameters, the radio frequency transmitting circuit of the terminal equipment transmits by using the new amplitude and phase transmitting parameters, the signal transmitted by the terminal equipment directly bypasses a target object, a strong signal area cannot be formed at the target object, the SAR compliance is realized, meanwhile, the signal of a mobile phone is focused at a base station, compared with the traditional scheme, the energy utilization rate is higher.

In one embodiment, the specific absorption rate control condition further comprises that the terminal device is in an initialization state; as shown in fig. 12, the method further comprises:

step 602, if the receiving signals of all antennas are obtained through the transceiving channels, respectively obtaining the signal characteristic parameters of each receiving signal, and processing each signal characteristic parameter to determine each transmitting parameter;

step 604, based on each transmission parameter, under the condition that the transmission signal of each antenna is at the network device along the corresponding target path and the homo focus respectively, it is confirmed that the terminal device enters the initialization state.

Specifically, in this embodiment, the specific absorption rate control condition currently met by the terminal device further includes that the terminal device is in an initialization state. As shown in fig. 13, taking an indoor scenario as an example, the initialization state may refer to that the transmission signals of the multiple antennas of the terminal device have formed a focused steady state at the network device based on time reversal before the terminal device triggers the present SAR compliance mechanism (for example, the target object does not exist). In some examples, the terminal device belongs to a stable state when in an initialization state, and after stabilization, the state of object approach can be accurately identified, and new adjustment is started until a new stable state is formed.

To further explain the solution of the embodiment of the present application, a specific example is described below, where a terminal device is a mobile phone (the mobile phone has four antennas, and a transceiving path is combined to form four transmitting paths and four receiving paths), a network device is a base station, a target object is a user, and the method is applied to an indoor scene:

(1) a base station sends a broadcast signal;

(2) when no shielding object exists between the mobile phone and the base station (no human body is shielded), four receiving channels of the mobile phone receive the broadcast signal of the base station;

(3) the mobile phone receiving channel carries out amplitude phase detection on the received base station signal through an amplitude/phase detection function; different antennas are located at different positions of the mobile phone, and a phase difference and an amplitude difference exist when the broadcast signals transmitted by the base station reach different antennas of the mobile phone.

(4) Taking the four antennas as antenna 1/antenna 2/antenna 3/antenna 4 as an example, the amplitude/phase detection module (for example, a transceiver) of the receiving path of the antenna 1 of the mobile phone sends the obtained amplitude A1/phase P1 information to the Modem.

(5) The modem performs time reversal calculation on the amplitude A1 and phase P1 signals, so as to obtain new amplitude A2 and phase P2 parameters.

(6) The transmitter of the handset antenna 1 transmits with the new amplitude A2 and phase P2.

(7) The antenna 2/antenna 3/antenna 4 of the mobile phone also performs transmission in the manner of steps (2) to (6), and the transmission signals of the 4 antennas of the mobile phone are focused at the base station.

(8) When a human body approaches the mobile phone, the human body shields signals of the base station, signals of the base station received by four receiving channels of the mobile phone change (partial direct signals of the base station cannot reach a receiving antenna of the mobile phone because of being shielded by the human body), and each receiver of the mobile phone extracts amplitude and phase according to the received signals of the base station and transmits the extracted amplitude and phase data to the Modem.

(9) The Modem performs time reversal on the amplitude and phase extracted by the receiving path of each receiving antenna to obtain new amplitude and phase.

All transmitters in the R mobile phone transmit in respective new amplitudes and phases, and the transmitting signals of the mobile phone are focused again at the base station.

In the above, the multi-path receiving/transmitting antenna of the mobile phone realizes that the transmitting signal of the mobile phone is transmitted by bypassing the human body, no hot spot of the SAR is formed on the human body, and meanwhile, as the transmitting signal of the mobile phone realizes the focused transmission at the base station, the utilization rate of the radio frequency signal energy is also obviously increased. It should be noted that, the receiver and the transmitter in steps (1) to (r) may use a transceiver in a mobile phone to implement corresponding functions.

It should be understood that, although the steps in the flowcharts related to the embodiments as described above are sequentially displayed as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or stages in other steps.

Based on the same inventive concept, the embodiment of the present application further provides a specific absorption rate compliance control device for implementing the specific absorption rate compliance control method mentioned above. The implementation scheme for solving the problem provided by the apparatus is similar to the implementation scheme described in the above method, so the specific definition in one or more specific absorption rate compliance control apparatus embodiments provided below may refer to the definition of the specific absorption rate compliance control method in the above, and is not described herein again.

In one embodiment, as shown in fig. 14, there is provided a specific absorption rate compliance control device, which is applied to a signal processing component of a terminal device, where the signal processing component is connected to a plurality of antennas through a transceiving path, the number of the transceiving path is one or more, and the distribution positions of the plurality of antennas are different; the device comprises:

a signal receiving module 710, configured to respectively obtain received signals of multiple antennas through a transceiving path in response to that the terminal device currently satisfies a specific absorption rate control condition; the specific absorption rate control condition comprises that the distance between the terminal equipment and the target object is less than or equal to a preset distance; the received signal comprises a broadcast signal from the network device that is not occluded by the target object;

a parameter determining module 720, configured to obtain signal characteristic parameters of the received signal, process the signal characteristic parameters, and determine transmitting parameters of the transceiving path; the transmission parameters are used for indicating the transmission signals of the plurality of antennas to be respectively focused at the network equipment along a target path, so that a specific absorption rate hot spot area formed by focusing of the transmission signals bypasses a target object; the target path includes a reverse path of a transmission path in which the network device transmits the broadcast signal.

In one embodiment, the signal characteristic parameters include an amplitude of the received signal and a phase of the received signal; the transmission parameters comprise the amplitude of the transmission signal and the phase of the transmission signal; the parameter determination module 720 includes:

the time reversal module is used for carrying out time reversal processing on the amplitude of the received signal and the phase of the received signal to obtain a time reversal calculation result;

and the parameter confirmation module is used for confirming the transmitting parameters according to the time reversal calculation result.

In one embodiment, the parameter determining module 720 further comprises:

a transmission parameter obtaining module, configured to obtain a channel transmission parameter of the received signal and a channel transmission parameter of the transmitted signal if a receiving frequency of the receiving/transmitting path for the received signal is different from a transmitting frequency of the receiving/transmitting path for the transmitted signal;

the calibration module is used for calibrating the channel transmission parameters of the received signals and the channel transmission parameters of the transmitted signals to obtain calibration results; the calibration result is used for representing the quantitative compensation of the channel transmission parameter difference between the received signal and the transmitted signal;

and the time reversal module is also used for finishing time reversal calculation of the signal characteristic parameters based on the calibration result to obtain a time reversal calculation result.

In one embodiment, the specific absorption rate control condition further comprises that the terminal device is in an initialization state; the device still includes:

the initialization state confirmation module is used for respectively acquiring the signal characteristic parameters of all the received signals if the received signals of all the antennas are acquired through the transceiving paths, and processing the signal characteristic parameters to determine all the transmitting parameters; and confirming that the terminal equipment enters an initialization state under the condition that the transmitting signals of the antennas are respectively at the network equipment along the corresponding target paths and the homopolymerization focuses on the basis of the transmitting parameters.

The various modules in the specific absorption rate compliance control device described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, a signal processing assembly is provided, the signal processing assembly is connected with a plurality of antennas through transceiving paths, the number of the transceiving paths is one or more, and the distribution positions of the plurality of antennas are different;

a signal processing component for implementing the steps of the above method.

In one embodiment, the signal processing component comprises a modem and a transceiver connected with the modem; the transceiver is connected with a plurality of antennas through a transceiving path;

Specifically, in the terminal device according to 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 data received and transmitted by the Transceiver.

In one embodiment, a terminal device is provided, which includes the above signal processing component, and further includes a transceiving path and a plurality of antennas; the signal processing assembly is connected with the plurality of antennas through the transceiving paths, the number of the transceiving paths is one or more, and the distribution positions of the plurality of antennas are different.

Specifically, as shown in fig. 15, the transceiving 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 transceiving path is one; the plurality of antennas includes at least 4 antennas, thereby enabling point focusing.

The terminal equipment also comprises a first switching component and a second switching component; the signal processing assembly is connected with the first switching assembly through the receiving branch and the transmitting branch respectively; the first switching component is used for switching to the conduction of the transmitting branch or the conduction of the receiving branch according to the signal sent by the signal processing component; the first switching assembly is respectively connected with each antenna through the second switching assembly, and the second switching assembly is used for switching to the corresponding antenna to be conducted with the transmitting branch or the receiving branch according to the signal sent by the signal processing assembly.

It should be noted that the second switching component is used to switch among multiple antennas, so as to implement that the transmitting branch and the receiving branch share the antenna. In some examples, the second switching component may be implemented by using a corresponding switch or the like, which is not limited in this application.

the terminal device is applied in a communication mode of frequency division duplexing and the first switching component comprises a diplexer.

Specifically, the terminal device is applied to a time division duplex communication mode, the transceiver path adopts a TDD radio frequency circuit, the first switching component includes a Single-pass switching device, and in some examples, the Single Pole Double Throw (SPDT) switch may be used to implement the Single Pole double Throw.

The terminal equipment is applied to a frequency division duplex communication mode, an FDD radio frequency circuit is adopted in a receiving and transmitting channel, and the first switching assembly realizes the isolation of a receiving signal and a transmitting signal through a duplexer. Furthermore, the duplexer isolates the transmitting signal from the receiving signal, and ensures that the receiving and the transmitting work normally at the same time.

In one embodiment, as shown in fig. 16, the plurality of antennas includes at least four antennas; the number of the transceiving paths is the same as that of the antennas, and the working frequency of each transceiving path is the same;

Specifically, the plurality of antennas includes at least four antennas, thereby enabling point focusing. The number of the transceiving paths is the same as that of the antennas, and the working frequency of each transceiving path is the same; the terminal equipment also comprises a plurality of switching components, each switching component is connected with each receiving and transmitting channel in a one-to-one correspondence manner, and each switching component is connected with each antenna in a one-to-one correspondence manner; furthermore, the receiving and transmitting path comprises a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna; the signal processing assembly is connected with the switching assembly through the transmitting branch and the receiving branch respectively, and the switching assembly is used for switching to a corresponding antenna to be conducted with the transmitting branch or the receiving branch according to a signal sent by the signal processing assembly.

in particular, the signal transmitted by the signal processing component may refer to a switching signal. As shown in fig. 17, 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 outputs a signal to a power amplifier PA, the signal output of the PA enters a switching component SPDT and then enters an antenna, and a transmitting branch is formed; the branch where the low noise amplifier LNA is located is a receiving branch, and signals pass through the switching component SPDT from the antenna, then enter the low noise amplifier LNA, and then enter the Transceiver Transceiver.

It should be noted that the switching component SPDT may respond to a switching signal, which may be output by the Transceiver or the Modem.

Further, as shown in fig. 18, the number of the antennas may also be 6, and the 6 antennas are distributed at different positions of the terminal device.

In one embodiment, the terminal device is adapted for frequency division duplex communication mode, and the switching component comprises a duplexer.

Specifically, the terminal device is applied in a Frequency Division Duplex (FDD) communication mode, and the switching component is implemented by using a duplexer. As shown in fig. 19, 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 with the output end of the power amplifier PA, the transmitting end of the duplexer is connected with the input end of the low noise amplifier LAN, and the antenna port of the duplexer is connected with the antenna.

In one embodiment, a terminal device is provided, an internal structure of which may be as shown in fig. 20. The terminal device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input device. The processor, the memory and the input/output interface are connected by a system bus, and the communication interface, the display unit and the input device are connected by the input/output interface to the system bus. Wherein the processor of the terminal device is configured to provide computing and control capabilities. The memory of the terminal device includes a nonvolatile 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 an operating system and computer programs in the non-volatile storage medium. The input/output interface of the terminal device is used for exchanging information between the processor and an external device. The communication interface of the terminal device is used for communicating with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a specific absorption rate compliance control method. The display unit of the terminal device is used for forming a visual picture, and 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 equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of the terminal equipment, an external keyboard, a touch pad or a mouse and the like.

Those skilled in the art will appreciate that the structure shown in fig. 20 is a block diagram of only a portion of the structure relevant to the present application, and does not constitute a limitation on the terminal device to which the present application is applied, and a particular terminal device may include more or less components than those shown in the drawings, or combine some components, or have a different arrangement of components.

In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the above-mentioned method.

In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, carries out the steps of the above-mentioned method.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include a Read-Only Memory (ROM), a magnetic tape, a floppy disk, a flash Memory, an optical Memory, a high-density embedded nonvolatile Memory, a resistive Random Access Memory (ReRAM), a Magnetic Random Access Memory (MRAM), a Ferroelectric Random Access Memory (FRAM), a Phase Change Memory (PCM), a graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. The specific absorption rate compliance control method is characterized by being applied to a signal processing assembly of terminal equipment, wherein the signal processing assembly is connected with a plurality of antennas through transceiving paths, the number of the transceiving paths is one or more, and the distribution positions of the antennas are different; the method comprises the following steps:

respectively acquiring receiving signals of a plurality of antennas through the transceiving paths in response to that the terminal equipment currently meets a specific absorption rate control condition; the specific absorption rate control condition comprises that the distance between the terminal equipment and a target object is less than or equal to a preset distance; the received signal comprises a broadcast signal from a network device that is not occluded by the target object;

acquiring signal characteristic parameters of the received signals, processing the signal characteristic parameters, and determining transmitting parameters of the transceiving access; the transmission parameters are used for indicating that transmission signals of a plurality of antennas are respectively focused at the network equipment along corresponding target paths, so that a specific absorption rate hot spot area formed by focusing of the transmission signals bypasses the target object; the target path includes a reverse path of a transmission path through which the network device transmits the broadcast signal.

2. The method of claim 1, wherein the signal characteristic parameters comprise an amplitude of the received signal and a phase of the received signal; the transmission parameters include an amplitude of the transmission signal and a phase of the transmission signal;

the step of processing the signal characteristic parameters and determining the transmission parameters of the transceiving paths comprises:

and confirming the transmitting parameters according to the time reversal calculation result.

3. The method of claim 2, wherein the step of time-inverting the amplitude of the received signal and the phase of the received signal to obtain a time-inverted computation comprises:

if the receiving frequency of the receiving and transmitting channel for the received signal is different from the transmitting frequency of the transmitting and receiving channel for the transmitted signal, acquiring the channel transmission parameter of the received signal and the channel transmission parameter of the transmitted signal;

calibrating the channel transmission parameters of the received signals and the channel transmission parameters of the transmitted signals to obtain calibration results; the calibration result is used for representing the quantization compensation of the channel transmission parameter difference between the receiving signal and the transmitting signal;

and completing time reversal calculation of the signal characteristic parameters based on the calibration result to obtain a time reversal calculation result.

4. The method according to claim 1, wherein the specific absorption rate control condition further comprises the terminal device being in an initialization state; the method further comprises the following steps:

if the receiving signals of all the antennas are obtained through the transceiving channels, the signal characteristic parameters of all the receiving signals are respectively obtained, and all the signal characteristic parameters are processed to determine all the transmitting parameters;

and confirming that the terminal equipment enters the initialization state under the condition that the transmitting signals of the antennas respectively follow the corresponding target paths and are focused at the network equipment.

5. The method according to any one of claims 1 to 4, wherein the preset distance is determined according to a specific absorption rate compliance requirement of the terminal device on the target object; the specific absorption rate control condition further comprises that a distance between the terminal device and the network device is less than or equal to a distance threshold.

6. The specific absorption rate compliance control device is characterized by being applied to a signal processing component of terminal equipment, wherein the signal processing component is connected with a plurality of antennas through a transceiving path, the number of the transceiving path is one or more, and the distribution positions of the antennas are different; the device comprises:

the signal receiving module is used for responding to the condition that the terminal equipment currently meets the specific absorption rate control condition and respectively acquiring receiving signals of the plurality of antennas through the transceiving passages; the specific absorption rate control condition comprises that the distance between the terminal equipment and a target object is less than or equal to a preset distance; the received signal comprises a broadcast signal from a network device that is not occluded by the target object;

a parameter determining module, configured to obtain a signal characteristic parameter of the received signal, process the signal characteristic parameter, and determine a transmission parameter of the transceiving path; the transmission parameters are used for indicating that transmission signals of a plurality of antennas are respectively focused at the network equipment along target paths, so that a specific absorption rate hot spot area formed by focusing of the transmission signals bypasses the target object; the target path includes a reverse path of a transmission path through which the network device transmits the broadcast signal.

7. A signal processing assembly is characterized in that the signal processing assembly is connected with a plurality of antennas through transceiving paths, the number of the transceiving paths is one or more, and the distribution positions of the antennas are different;

the signal processing component for implementing the steps of the method of any one of claims 1 to 5.

8. The signal processing component of claim 7, wherein the signal processing component comprises a modem, and a transceiver connected to the modem; the transceiver is connected with the plurality of antennas through the transceiving paths;

the transceiver is used for receiving and acquiring the signal characteristic parameters of the received signals; the modem is used for processing the signal characteristic parameters to obtain the transmitting parameters.

9. A terminal device comprising the signal processing assembly of claim 7 or 8, further comprising a transceiver path and a plurality of antennas; the signal processing assembly is connected with a plurality of antennas through the transceiving paths, the number of the transceiving paths is one or more, and the distribution positions of the antennas are different.

10. The terminal device according to claim 9, wherein the transceiving path comprises a receiving branch and a transmitting branch, and the receiving branch and the transmitting branch share the same antenna;

the number of the transceiving paths is one, and the plurality of antennas comprise at least four antennas; the terminal equipment further comprises a first switching component and a second switching component;

11. The terminal device of claim 10,

the terminal equipment is applied to a time division duplex communication mode, and the first switching component comprises a switching device which is conducted in a single path;

the terminal equipment is applied to a communication mode of frequency division duplex, and the first switching component comprises a duplexer.

12. The terminal device of claim 9, wherein the plurality of antennas comprises at least four antennas; the number of the transceiving paths is the same as that of the antennas, and the working frequency of each transceiving path is the same;

the terminal equipment also comprises a plurality of switching components, each switching component is connected with each transceiving channel in a one-to-one correspondence manner, and each switching component is connected with each antenna in a one-to-one correspondence manner;

13. The terminal device of claim 12,

the terminal equipment is applied to a time division duplex communication mode, and the switching component comprises a switching device which is conducted in a single way;

the terminal equipment is applied to a communication mode of frequency division duplex, and the switching component comprises a duplexer.

14. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5.

15. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.