WO2023024820A1 - Procédé et appareil permettant d'ajuster un débit d'absorption spécifique d'une onde électromagnétique, support et dispositif électronique - Google Patents

Procédé et appareil permettant d'ajuster un débit d'absorption spécifique d'une onde électromagnétique, support et dispositif électronique Download PDF

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Publication number
WO2023024820A1
WO2023024820A1 PCT/CN2022/108709 CN2022108709W WO2023024820A1 WO 2023024820 A1 WO2023024820 A1 WO 2023024820A1 CN 2022108709 W CN2022108709 W CN 2022108709W WO 2023024820 A1 WO2023024820 A1 WO 2023024820A1
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WIPO (PCT)
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antenna
state
transmit power
terminal device
mapping relationship
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PCT/CN2022/108709
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English (en)
Chinese (zh)
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荆夏辉
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Oppo广东移动通信有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/288—Provisions within MR facilities for enhancing safety during MR, e.g. reduction of the specific absorption rate [SAR], detection of ferromagnetic objects in the scanner room
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the disclosure relates to the technical field of radiation adjustment, and in particular to a method for adjusting the specific absorption rate of electromagnetic waves, a device for adjusting the specific absorption rate of electromagnetic waves, a computer-readable medium, and electronic equipment.
  • the measured SAR value is greater than the preset SAR threshold of the safety standard stipulated by the region, it is usually processed in the following two ways: one is to adjust the matching topology of the antenna to change the hotspot of the antenna The distribution or antenna radiation performance, so as to achieve the purpose of reducing the SAR value; the second is to identify various application scenarios through hotspots or some sensors, and then reduce the RF output power according to different application scenarios, so that the SAR value of the antenna is lower than the specified safety standard.
  • the above-mentioned first method can essentially solve the problem of SAR value exceeding the standard, it will affect the performance of the antenna in all application scenarios, so it may lead to the situation that the basic functions of the antenna cannot be realized in specific scenarios; the second method Although the method can directly and effectively reduce the SAR value, it is difficult to balance and cover complex application scenarios considering the size, cost, effective conditions of hotspots or sensors, and the complexity of SAR value testing of mobile devices. A method to passively reduce the SAR value.
  • a method for adjusting the specific absorption rate of electromagnetic waves including: determining the target mapping relationship corresponding to the region according to the preset SAR threshold corresponding to the region where the terminal device is located; wherein the target mapping relationship includes transmit power and antenna The mapping relationship between states; read the current target transmission power of the terminal device, and determine the target antenna state corresponding to the target transmission power based on the target mapping relationship; adjust the antenna switch of the terminal device so that the antenna of the terminal device is in the target antenna state , to adjust the electromagnetic wave specific absorption rate corresponding to the terminal equipment.
  • an apparatus for adjusting the specific absorption rate of electromagnetic waves including: a mapping determination module configured to determine the target mapping relationship corresponding to the region according to the preset SAR threshold corresponding to the region where the terminal device is located; wherein, the target The mapping relationship includes a mapping relationship between transmission power and antenna state; the target determination module is configured to read the current target transmission power of the terminal device, and determine the target antenna state corresponding to the target transmission power based on the target mapping relationship; the state adjustment module, It is configured to adjust the antenna switch of the terminal device, so that the antenna of the terminal device is in a target antenna state, so as to adjust the electromagnetic wave specific absorption rate corresponding to the terminal device.
  • a computer-readable medium on which a computer program is stored, and when the computer program is executed by a processor, the above method is implemented.
  • an electronic device including: a processor; and a memory configured to store one or more programs, so that when the one or more programs are executed by the one or more processors, a or a plurality of processors to implement the method described above.
  • FIG. 1 shows a schematic diagram of an exemplary system architecture to which embodiments of the present disclosure can be applied
  • FIG. 2 shows a schematic diagram of an electronic device to which an embodiment of the present disclosure can be applied
  • FIG. 3 schematically shows a flow chart of a method for adjusting the specific absorption rate of electromagnetic waves in an exemplary embodiment of the present disclosure
  • FIG. 4 schematically shows a flowchart of a method for determining a target mapping relationship in an exemplary embodiment of the present disclosure
  • FIG. 5 schematically shows a flowchart of a method for generating a target mapping relationship in an exemplary embodiment of the present disclosure
  • FIG. 6 schematically shows a schematic diagram of a process of establishing K transmit power ranges in an exemplary embodiment of the present disclosure
  • Fig. 7 schematically shows a comparative diagram of beneficial effects brought by exemplary embodiments of the present disclosure
  • Fig. 8 schematically shows the composition of the device for adjusting the specific absorption rate of electromagnetic waves in an exemplary embodiment of the present disclosure.
  • Example embodiments will now be described more fully with reference to the accompanying drawings.
  • Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art.
  • the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
  • Fig. 1 shows a schematic diagram of a system architecture of an exemplary application environment in which a method and device for adjusting electromagnetic wave specific absorption rate according to an embodiment of the present disclosure can be applied.
  • the system architecture 100 may include one or more of terminal devices 101 , 102 , 103 , a network 104 and a server 105 .
  • the network 104 is used as a medium for providing communication links between the terminal devices 101 , 102 , 103 and the server 105 .
  • Network 104 may include various connection types, such as wires, wireless communication links, or fiber optic cables, among others.
  • the terminal devices 101, 102, and 103 may be electronic devices capable of communicating through antennas, including but not limited to desktop computers, portable computers, smart phones, and tablet computers. It should be understood that the numbers of terminal devices, networks and servers in Fig. 1 are only illustrative. According to the implementation needs, there can be any number of terminal devices, networks and servers.
  • the server 105 may be a server cluster composed of multiple servers.
  • the methods for adjusting the SAR of electromagnetic waves provided by the embodiments of the present disclosure are generally implemented in the terminal devices 101 , 102 , and 103 , and correspondingly, the devices for adjusting the SAR of electromagnetic waves are generally set in the terminal devices 101 , 102 , and 103 .
  • the method for adjusting the specific absorption rate of electromagnetic waves provided by the embodiments of the present disclosure can also be executed by the server 105, and correspondingly, the device for adjusting the specific absorption rate of electromagnetic waves can also be set in the server 105. This is not specifically limited in the exemplary embodiments.
  • the terminal devices 101, 102, and 103 may obtain the preset SAR thresholds corresponding to their regions, and then send the preset SAR thresholds and the current target transmission power to the server through the network 104
  • the server 105 determines the target mapping relationship through the preset SAR threshold, and determines the target antenna state corresponding to the target transmission power in the target mapping relationship, and then returns the target antenna state to
  • the terminal devices 101, 102, and 103 adjust the antenna switches of the terminal devices so that the antennas of the terminal devices are in the target antenna state, and then adjust the electromagnetic wave specific absorption rate corresponding to the terminal devices.
  • An exemplary embodiment of the present disclosure provides an electronic device for implementing a method for adjusting the specific absorption rate of electromagnetic waves, which may be the terminal devices 101 , 102 , 103 or the server 105 in FIG. 1 .
  • the electronic device includes at least a processor and a memory, the memory is configured to store executable instructions of the processor, and the processor is configured to execute the method for adjusting the specific absorption rate of electromagnetic waves by executing the executable instructions.
  • the mobile terminal 200 in FIG. 2 As an example below, the structure of the electronic device will be exemplarily described. Those skilled in the art will appreciate that, in addition to components specifically intended for mobile purposes, the configuration in Fig. 2 can also be applied to equipment of a stationary type.
  • the mobile terminal 200 may include more or fewer components than shown, or combine some components, or separate some components, or arrange different components.
  • the illustrated components may be implemented in hardware, software, or a combination of software and hardware.
  • the interface connection relationship among the various components is only schematically shown, and does not constitute a structural limitation on the mobile terminal 200 . In some other implementation manners, the mobile terminal 200 may also adopt an interface connection manner different from that in FIG. 2 , or a combination of multiple interface connection manners.
  • the mobile terminal 200 may specifically include: a processor 210, an internal memory 221, an external memory interface 222, a Universal Serial Bus (Universal Serial Bus, USB) interface 230, a charging management module 240, a power management module 241, battery 242, antenna 1, antenna 2, mobile communication module 250, wireless communication module 260, audio module 270, speaker 271, receiver 272, microphone 273, earphone interface 274, sensor module 280, display screen 290, camera module 291, indication device 292, motor 293, button 294, subscriber identification module (subscriber identification module, SIM) card interface 295, etc.
  • the sensor module 280 may include a SAR sensor 2801, a depth sensor 2802, a pressure sensor 2803, and the like.
  • the processor 210 may include one or more processing units, for example: the processor 210 may include an application processor (Application Processor, AP), a modem processor, a graphics processor (Graphics Processing Unit, GPU), an image signal processor (Image Signal Processor, ISP), controller, video codec, digital signal processor (Digital Signal Processor, DSP), baseband processor and/or neural network processor (Neural-Network Processing Unit, NPU), etc. Wherein, different processing units may be independent devices, or may be integrated in one or more processors.
  • an application processor Application Processor, AP
  • modem processor a graphics processor
  • ISP image signal processor
  • ISP image Signal Processor
  • controller video codec
  • digital signal processor Digital Signal Processor
  • DSP Digital Signal Processor
  • NPU neural network Processing Unit
  • different processing units may be independent devices, or may be integrated in one or more processors.
  • the wireless communication function of the mobile terminal 200 can be realized by the antenna 1, the antenna 2, the mobile communication module 250, the wireless communication module 260, a modem processor, a baseband processor, and the like.
  • the antenna 1 and the antenna 2 are configured to transmit and receive electromagnetic wave signals;
  • the mobile communication module 250 can provide solutions for wireless communication including 2G/3G/4G/5G applied on the mobile terminal 200;
  • the modem processor can Including a modulator and a demodulator;
  • the wireless communication module 260 can provide applications on the mobile terminal 200 including wireless local area networks (Wireless Local Area Networks, WLAN) (such as wireless fidelity (Wireless Fidelity, Wi-Fi) network), bluetooth ( Bluetooth, BT) and other wireless communication solutions.
  • WLAN wireless Local Area Networks
  • the antenna 1 of the mobile terminal 200 is coupled to the mobile communication module 250, and the antenna 2 is coupled to the wireless communication module 260, so that the mobile terminal 200 can communicate with the network and other devices through wireless communication technology.
  • the antenna 1 and the antenna 2 are configured with an antenna switch, which is configured to switch the state of the antenna, so as to adjust the electromagnetic wave specific absorption rate corresponding to the terminal device.
  • the SAR sensor 2801 is configured to reflect the SAR value of the situation where the mobile terminal 200 is in contact with the user during use.
  • the depth sensor 2802 is configured to acquire depth information of the scene.
  • the pressure sensor 2803 is configured to sense pressure signals and convert the pressure signals into electrical signals.
  • sensors with other functions can also be set in the sensor module 280 according to actual needs, such as gyroscope sensors, air pressure sensors, magnetic sensors, acceleration sensors, distance sensors, proximity light sensors, fingerprint sensors, temperature sensors, touch sensors, ambient light sensors, bone conduction sensors, etc.
  • the mobile terminal 200 may also include other devices providing auxiliary functions.
  • the key 294 includes a power key, a volume key, etc.
  • the user may input key signals related to user settings and function control of the mobile terminal 200 through key input.
  • the region where the terminal device is currently located and the preset SAR threshold corresponding to the region can be determined through the SIM card inserted into the SIM card interface 295 .
  • Electromagnetic wave specific absorption rate refers to the electromagnetic radiation energy absorbed by a unit mass of matter per unit time. In the currently commonly used 5G mobile terminals, regardless of domestic or overseas markets, the SAR value needs to be controlled according to local regulations.
  • the first method can essentially solve the problem of SAR value exceeding the standard by adjusting the antenna matching topology, but it will affect the performance of the antenna in all application scenarios, and it cannot actively do targeted scene identification, so it may It will lead to the situation that the basic functions of the antenna cannot be realized in a specific scene, thus affecting the actual experience of consumers in the whole scene;
  • the second method can directly and effectively reduce the SAR value by reducing the RF output power, but the same far-field performance of the mobile phone There will also be corresponding sacrifices, which will affect the actual experience of consumers; at the same time, under some standards (such as 3GPP) that require the lower limit of RF output power, when the SAR value seriously exceeds the standard, this method cannot completely Effectively solve the problem that the SAR value exceeds the standard.
  • Hot-spot can effectively solve the SAR problem under the FCC standard at 10mm, but it can't do anything about 0mm.
  • Certain specific scenarios can be effectively identified through some sensors, so as to reduce the RF output power of the scenario in a targeted manner.
  • it is difficult to make a trade-off due to considerations of the space, cost, sensor validation conditions of the mobile phone, and the complexity of SAR testing. It is difficult to cover complex user scenarios, which belongs to the method of passively reducing the SAR value.
  • this exemplary embodiment provides a new method for adjusting the specific absorption rate of electromagnetic waves.
  • the method for adjusting the specific absorption rate of electromagnetic waves may be applied to the above-mentioned server 105, and may also be applied to one or more of the above-mentioned terminal devices 101, 102, and 103, which is not specifically limited in this exemplary embodiment.
  • the method for adjusting the electromagnetic wave specific absorption rate may include the following steps S310 to S330:
  • step S310 the target mapping relationship corresponding to the region is determined according to the preset SAR threshold corresponding to the region where the terminal device is located.
  • the preset SAR threshold corresponding to the region can be set according to the current regulations of each country and region to control the SAR value.
  • the European standard is 2w/kg
  • the American standard is 1.6w/kg
  • the target mapping relationship may include the mapping relationship between transmit power and antenna state.
  • the transmission power usually covers all the transmission power that the terminal equipment can achieve under the communication standard; the antenna state includes multiple states that can be switched by the antenna switch, and the far-field performance of the antenna corresponding to each state is different.
  • the antenna switch has three switchable states A, B, and C, and in the three states, the order of the far-field performance of the antenna is A>B>C.
  • the corresponding mapping relationship can be set in advance for the preset SAR values corresponding to all regions in the world, and stored on the terminal device or server. After the terminal device is powered on, it can directly obtain the preset SAR value corresponding to the region where the terminal device is currently located, and then find the target mapping relationship corresponding to the preset SAR value in the mapping relationship stored in advance, and then perform subsequent processing.
  • mapping relationship since different terminal devices may have different antenna states that can be switched by the antenna switch, when the mapping relationship is set in advance, different settings may be made for different terminal device models. On this basis, if the mapping relationship is stored in the server, it can be stored separately according to the terminal device model, so that terminal devices of different models can determine the target mapping relationship in the corresponding mapping relationship.
  • determine the target mapping relationship reference map corresponding to the region according to the preset SAR threshold corresponding to the region where the terminal device is located 4 may include the following steps S410 to S430:
  • step S410 a first antenna state is determined among N antenna states according to a preset SAR threshold.
  • the first antenna state may include an antenna state that satisfies a preset SAR threshold certification and has a maximum far-field performance.
  • satisfying the preset SAR threshold certification means that when the terminal device is at the maximum transmission power allowed by the communication standard, the test SAR value corresponding to the antenna state is smaller than the preset SAR threshold.
  • N takes an integer greater than 1; the maximum transmit power corresponding to the terminal device refers to the maximum transmit power that can be used when the current communication standard allows the terminal device to perform radio frequency transmission.
  • the corresponding far-field performance may also be different. Therefore, after the terminal device is manufactured, the far-field performance of various antenna states can be stored in the terminal device in advance. or store their far-field performance data on the server for different types of terminal devices. When it is necessary to judge the size of the far-field performance, the terminal device can directly obtain and use it from the server through the network.
  • step S420 a first state set is established based on antenna states whose far-field performance is greater than or equal to the first antenna state.
  • a set of all antenna states whose far-field performance is greater than or equal to the first antenna state among the N antenna states corresponding to the antenna switch may be used as the first state set.
  • the first antenna state is the antenna state that satisfies the preset SAR threshold certification and has the largest far-field performance, and at the same time, under the same transmission frequency, the far-field performance of the antenna is positively correlated with the SAR value. Therefore, when the transmission frequency of the terminal device does not reach the maximum transmission frequency allowed by the communication standard, the SAR value corresponding to the antenna state whose far-field performance is greater than the first antenna state may be smaller than the preset SAR threshold. Based on this principle, the mapping relationship can be established based on the first antenna state set, so as to avoid communication through the antenna state whose far-field performance is lower than the first antenna state under the premise that the first antenna state meets the preset SAR threshold authentication The resulting sacrifice of far-field performance.
  • step S430 the target mapping relationship is determined based on the preset SAR threshold and the first state set.
  • a target mapping relationship may be jointly established based on the preset SAR threshold and the first state set. Specifically, the maximum transmission power corresponding to each antenna state in the first state set may be determined first based on the preset SAR threshold, and then a target mapping relationship is established according to each antenna state and the maximum transmission power corresponding to each antenna state.
  • the maximum transmit power corresponding to each antenna state refers to the transmit power corresponding to the terminal device when the test SAR value is equal to the preset SAR threshold in the antenna state.
  • the target mapping relationship is established based on each antenna state and the maximum transmit power corresponding to each antenna state, refer to As shown in FIG. 5, the following steps S510 to S530 may be included:
  • step S510 K transmit power ranges are established according to the magnitude relationship of the maximum transmit power corresponding to each antenna state.
  • the maximum transmit power corresponding to the first antenna state is equal to the communication
  • the maximum transmit power of the terminal equipment allowed by the standard at the same time, when setting the antenna state, generally the maximum transmit power corresponding to the antenna state will not be set to be less than the minimum transmit power allowed by the communication standard.
  • K transmit power ranges may be established based on the relationship between the minimum transmit power of the terminal device allowed by the communication standard and the maximum transmit power corresponding to the K antenna states. Wherein, based on the above determination process of the first antenna state, it can be known that the maximum transmit power K corresponding to the first antenna state is equal to the maximum transmit power corresponding to the terminal device.
  • step S520 for each transmit power range, an antenna state with a maximum transmit power equal to the maximum value of the transmit power range is configured as an antenna state corresponding to the transmit power range.
  • the antenna state whose maximum transmit power corresponding to the antenna state is equal to the maximum value of the transmit power range can be configured as the transmit power range Corresponding antenna status.
  • the maximum transmit power corresponding to antenna state 1 and antenna state 2 set by a certain terminal is n1 and n2 respectively, assuming that n1 is greater than n2, at this time it can be determined that the transmit power range is [n2, n1), and then the maximum transmit power is equal to n1
  • Antenna state 1 of is configured as the antenna state corresponding to the transmit power range [n2, n1).
  • the maximum transmit power corresponding to the antenna state is calculated when it is equal to the preset SAR threshold, when setting the transmit power range, the maximum transmit power corresponding to a certain antenna state is usually set when the long-range performance is lower than the threshold. within the transmit power range of the antenna state. For example, in the above example, if the transmit power range corresponding to antenna state 2 with the maximum transmit power equal to n2 is set to include n2, the SAR may be exactly equal to the preset SAR threshold. In marginal cases, it is usually chosen to set a value equal to n2 in the transmit power range corresponding to antenna state 1 whose far-field performance is lower than antenna state 2, that is, [n2, n1).
  • step S530 a target mapping relationship is generated based on the K transmit power ranges and antenna states corresponding to each transmit power range.
  • target mapping relationships may be generated based on K groups of correspondence relationships.
  • the problem of exceeding the SAR value can be effectively solved while affecting the user experience as little as possible; at the same time, by using the switching device, in addition to the function of the antenna switch itself to tune the performance of the antenna
  • it can also be configured to identify the target transmission power of the mobile phone itself under the current network, and dynamically call a variety of different antenna states corresponding to the antenna switch, thereby achieving the purpose of reducing the SAR value without reducing the RF output power.
  • the second state set is empty, that is, all antenna states cannot meet the preset SAR threshold authentication.
  • the first antenna state that satisfies the preset SAR threshold authentication cannot be determined among the N antenna states.
  • the second antenna state with the lowest far-field performance can be determined first among the N antenna states; and then based on the second antenna The state determines the RF conductance value and establishes a target mapping relationship based on the RF conductance value.
  • the maximum transmit power corresponding to the second antenna state may be first determined based on the preset SAR threshold; and then Calculate the difference between the maximum transmit power corresponding to the second antenna state and the maximum transmit power corresponding to the terminal device to obtain the radio frequency conduction value; at the same time, determine the N maximum transmit powers corresponding to the N antenna states based on the preset SAR threshold; and then pass the radio frequency conduction The N maximum transmit powers are adjusted to obtain N adjusted maximum transmit powers; and then the target mapping relationship is established based on the N antenna states and the adjusted maximum transmit powers corresponding to each antenna state.
  • the maximum transmit power corresponding to the terminal device refers to the maximum transmit power that the current communication standard allows the terminal device to use for radio frequency transmission;
  • the difference between the maximum transmit power and the RF conduction value For example, assuming that the calculated radio frequency conduction value is ⁇ , and the maximum transmission power corresponding to a certain antenna state is n3, the adjustment result of the antenna state is n3- ⁇ .
  • the minimum transmit power of the terminal device allowed by the communication standard can be The relationship between the power and the adjusted maximum transmit power corresponding to the N antenna states can establish N transmit power ranges; then for each transmit power range, the adjusted maximum transmit power corresponding to the antenna state can be compared with the maximum transmit power range Antenna states with equal values are configured as antenna states corresponding to the transmit power range; then target mapping relationships are generated based on N groups of corresponding relationships.
  • step S320 the current target transmit power of the terminal device is read, and the target antenna state corresponding to the target transmit power is determined based on the target mapping relationship.
  • the current target transmit power of the terminal device may be read, and then the target antenna state corresponding to the target transmit power is determined in the target mapping relationship. For example, if the current target transmit power of the read terminal device is n4, and in the target mapping relationship, the antenna state corresponding to n4 is antenna state 1, then it is determined that the target antenna state is antenna state 1.
  • step S330 the antenna switch of the terminal device is adjusted so that the antenna of the terminal device is in a target antenna state, so as to adjust the electromagnetic wave specific absorption rate corresponding to the terminal device.
  • the antenna switch of the terminal device may be adjusted so that the antenna state of the terminal device is in the target antenna state, and then the electromagnetic wave SAR corresponding to the terminal device may be adjusted.
  • different antenna states can be called dynamically in multiple stages to achieve the purpose of adjusting the SAR value.
  • the antenna switch is not only used as a tuning device, but also can be used as a sensor to dynamically adjust the SAR value.
  • the cost of the antenna switch is relatively low, and the cost is lower than that of the adjustment method implemented by means of sensors.
  • the antenna switch corresponds to the three antenna states A, B, and C, and the relationship between the far-field performance of the antenna is A>B>C, and the transmission power is represented by the transmission power adjustment value TXAGC value as an example, and the technical solutions of the embodiments of the present disclosure To elaborate:
  • the antenna switch When the antenna is in the transmitting state, adjust the antenna switch so that the antenna is in the antenna state A, B or C, adjust the transmit power of the terminal device to the maximum transmit power corresponding to the terminal device, and test the test SAR values corresponding to the three antenna states, based on less than
  • the antenna states corresponding to the test SAR values equal to the preset SAR threshold establish a second state set. Since the preset SAR thresholds stipulated by regulations in various regions are different, there are two possibilities for the second state set:
  • the second state set is not empty.
  • the antenna switch corresponds to three antenna states A, B, and C, there are the following three situations:
  • the determined target mapping relationship is shown in Table 1.
  • the determined target mapping relationship is shown in Table 2.
  • Table 1 The target mapping relationship determined when the second state set includes three antenna states
  • TXAGC value antenna status Minimum transmit power ⁇ TXAGC ⁇ maximum transmit power A
  • Table 2 The target mapping relationship determined when the second state set includes two antenna states
  • TXAGC value antenna status Minimum transmit power ⁇ TXAGC ⁇ A ⁇ TXAGC ⁇ maximum transmit power B
  • Table 3 The target mapping relationship determined when one antenna state is included in the second state set
  • TXAGC value antenna status Minimum transmit power ⁇ TXAGC ⁇ A ⁇ TXAGC ⁇ B ⁇ TXAGC ⁇ maximum transmit power C
  • ⁇ and ⁇ are the maximum transmit power corresponding to antenna state A and antenna state B respectively; the maximum transmit power and minimum transmit power refer to the minimum transmit power and maximum transmit power that can be used when the current communication standard allows the terminal device to perform radio frequency transmission.
  • the second state set since the second state set includes three antenna states at the same time, that is, the maximum transmit power ⁇ corresponding to antenna state A is greater than or equal to the maximum transmit power corresponding to the terminal device. Therefore, the first antenna state is antenna state A, and the corresponding first state set only includes antenna state A, and Table 1 is obtained.
  • the second state set since the second state set includes two antenna states at the same time, that is, the maximum transmit power ⁇ corresponding to antenna state A is less than the maximum transmit power corresponding to the terminal device, and the maximum transmit power ⁇ corresponding to antenna state B is greater than or equal to the terminal The maximum transmit power corresponding to the device. Therefore, the first antenna state is antenna state B, and the corresponding first state set includes antenna states B and A. Among them, when the transmission power is less than ⁇ , the antenna state A can reduce the far-field performance loss (compared to the antenna state B) on the premise that the SAR value does not exceed the preset SAR threshold, so Table 2 is obtained.
  • the first antenna state is antenna state C
  • the corresponding first state set includes antenna states C, B, and A.
  • the antenna state B when the transmission power is less than ⁇ , the antenna state B can meet the SAR value does not exceed the preset SAR threshold, and reduce the far-field performance loss (relative to the antenna state C); when the transmission power is less than ⁇ , the antenna state A can meet On the premise that the SAR value does not exceed the preset SAR threshold, the far-field performance loss (relative to antenna state B) is reduced, so Table 3 is obtained.
  • the throughput performance of the antenna is shown in Figure 7a; and using the target mapping relationship shown in Table 3, the throughput performance of the antenna is shown in Figure 7b, where the area 1 and area 2 are the performance improvements compared to Figure 7a .
  • ⁇ and ⁇ may also be set to values smaller than the maximum transmit power corresponding to antenna state A and antenna state B according to actual needs. For example, after determining the maximum transmit power corresponding to antenna state A and antenna state B, the maximum transmit power may be multiplied by a coefficient less than 1 at the same time. It should be noted that when ⁇ and ⁇ respectively take the maximum transmit power corresponding to antenna state A and antenna state B, the improvement of throughput performance can be maximized (as shown in area 1 and area 2 in Figure 7b).
  • the other is that the second state set is empty.
  • the antenna switch corresponds to three antenna states A, B, and C
  • the first antenna state cannot be determined because the second state set is empty.
  • the determined target mapping relationship is shown in Table 4.
  • Table 4 The target mapping relationship determined when the second state set is space-time
  • TXAGC value antenna status Minimum transmit power ⁇ TXAGC ⁇ - ⁇ A ⁇ - ⁇ TXAGC ⁇ - ⁇ B ⁇ - ⁇ TXAGC ⁇ Maximum transmit power- ⁇ C
  • ⁇ and ⁇ are the maximum transmit power corresponding to antenna state A and antenna state B respectively; ⁇ is the radio frequency conduction value calculated based on antenna state C; the maximum transmit power and the minimum transmit power refer to the current communication standard that allows the terminal equipment to conduct radio frequency The minimum transmit power and the maximum transmit power that can be used during transmission.
  • different antenna states can be invoked by reading the current transmit power in all scenarios of the user application.
  • the antenna state can be switched by setting the target mapping relationship, so as to achieve the purpose of adjusting the SAR value without reducing the RF output power, so as to ensure the certification that meets the preset SAR threshold; on the other hand, it can Ensure that the antenna calls the antenna state with greater far-field performance in as many scenarios as possible to ensure throughput performance.
  • the power consumption of the antenna is also optimized to a certain extent.
  • the embodiment of this example also provides an apparatus 800 for adjusting the specific absorption rate of electromagnetic waves, including a mapping determination module 810 , a target determination module 820 and a state adjustment module 830 . in:
  • the mapping determination module 810 may be configured to determine a target mapping relationship corresponding to the region according to a preset SAR threshold corresponding to the region where the terminal device is located; wherein the target mapping relationship includes a mapping relationship between transmit power and antenna state.
  • the target determining module 820 may be configured to read the current target transmit power of the terminal device, and determine a target antenna state corresponding to the target transmit power based on the target mapping relationship.
  • the state adjustment module 830 may be configured to adjust the antenna switch of the terminal device so that the antenna of the terminal device is in the target antenna state, so as to adjust the corresponding electromagnetic wave specific absorption rate of the terminal device.
  • the mapping determination module 810 may be configured to switch between the N types according to the preset SAR threshold. Determine the first antenna state among the antenna states; establish a first state set based on the antenna state whose far-field performance is greater than or equal to the first antenna state; determine based on the preset SAR threshold and the first state set Target mapping relationship.
  • N is an integer greater than 1.
  • the mapping determination module 810 may be configured to test the test SAR values corresponding to the N antenna states when adjusting the transmit power of the terminal device to the maximum transmit power corresponding to the terminal device, and Establish a second state set based on the antenna state corresponding to the test SAR value less than or equal to the preset SAR threshold; determine the antenna state with the largest far-field performance in the second state set as the corresponding to the region The state of the first antenna.
  • the mapping determination module 810 may be configured to determine the maximum transmission power corresponding to each antenna state in the first state set based on a preset SAR threshold; based on each of the antenna states and each of the antenna states The corresponding maximum transmit power establishes a target mapping relationship.
  • the mapping determination module 810 may be configured to establish K transmit power ranges according to the magnitude relationship of the maximum transmit power corresponding to each of the antenna states; For each of the transmit power ranges, configure the antenna state with the maximum transmit power equal to the maximum value of the transmit power range as the antenna state corresponding to the transmit power range; based on the K transmit power ranges and each An antenna state corresponding to the transmit power range generates the target mapping relationship.
  • K is a positive integer less than or equal to N.
  • the mapping determination module 810 may be configured to determine the second antenna state with the lowest far-field performance among the N antenna states; Two antenna states determine the radio frequency conduction value, and establish a target mapping relationship based on the radio frequency conduction value.
  • the mapping determination module 810 may be configured to determine the maximum transmit power corresponding to the second antenna state based on a preset SAR threshold; calculate the maximum transmit power corresponding to the second antenna state and the terminal The difference between the maximum transmission powers corresponding to the equipment is obtained to obtain the radio frequency conduction value; the N maximum transmission powers corresponding to the N antenna states are respectively determined based on the preset SAR threshold; the N maximum transmission powers and the radio frequency conduction values are respectively calculated difference, to obtain N adjusted maximum transmit powers; and establish a target mapping relationship based on the N antenna states and the adjusted maximum transmit powers corresponding to the antenna states.
  • the mapping determination module 810 may be configured to establish N transmit power ranges according to the magnitude relationship of the adjusted maximum transmit power corresponding to each of the antenna states; for each of the transmit power ranges , configuring the antenna state with the adjusted maximum transmit power equal to the maximum value of the transmit power range as the antenna state corresponding to the transmit power range; based on the N transmit power ranges and each of the transmit power ranges The corresponding antenna state generates the target mapping relationship.
  • Exemplary embodiments of the present disclosure also provide a computer-readable storage medium on which a program product capable of implementing the above-mentioned method in this specification is stored.
  • various aspects of the present disclosure can also be implemented in the form of a program product, which includes program code, and when the program product is run on the terminal device, the program code is configured to make the terminal device execute this specification.
  • the computer-readable medium shown in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two.
  • a computer readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable Programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above.
  • a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.
  • a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave carrying computer-readable program code therein. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • a computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.
  • Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
  • program code for performing the operations of the present disclosure may be written in any combination of one or more programming languages, including object-oriented programming languages—such as Java, C++, etc., as well as conventional procedural Programming language - such as "C" or a similar programming language.
  • the program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server to execute.
  • the remote computing device may be connected to the user computing device through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., using an Internet service provider). business to connect via the Internet).
  • LAN local area network
  • WAN wide area network
  • Internet service provider an Internet service provider

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  • Physics & Mathematics (AREA)
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  • Engineering & Computer Science (AREA)
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  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

Procédé permettant d'ajuster le débit d'absorption spécifique (DAS) d'une onde électromagnétique, appareil permettant d'ajuster le DAS d'une onde électromagnétique, support lisible par ordinateur et dispositif électronique, qui se rapportent au domaine technique de l'ajustement de rayonnement. Le procédé consiste : à déterminer, selon un seuil DAS prédéfini correspondant à une zone dans laquelle est situé un dispositif terminal, une cartographie cible correspondant à la zone (S310); à lire la puissance d'émission cible actuelle du dispositif terminal, et à déterminer, sur la base de la cartographie cible, un état d'antenne cible correspondant à la puissance d'émission cible (S320); et à ajuster un commutateur d'antenne du dispositif terminal, de telle sorte qu'une antenne du dispositif terminal se trouve dans un état d'antenne cible, de manière à ajuster le DAS d'onde électromagnétique correspondant au dispositif terminal (S330). Dans le procédé, un dispositif commutateur tel qu'un commutateur d'antenne est utilisé à la fois pour régler les performances d'antenne et pour commuter de manière dynamique des états d'antenne selon une puissance d'émission cible actuelle, de manière à atteindre le but d'ajuster une valeur DAS sans réduire la puissance de sortie de radiofréquence.
PCT/CN2022/108709 2021-08-25 2022-07-28 Procédé et appareil permettant d'ajuster un débit d'absorption spécifique d'une onde électromagnétique, support et dispositif électronique WO2023024820A1 (fr)

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