CN113573396A - SAR value control method and device and mobile terminal - Google Patents

SAR value control method and device and mobile terminal Download PDF

Info

Publication number
CN113573396A
CN113573396A CN202010351204.5A CN202010351204A CN113573396A CN 113573396 A CN113573396 A CN 113573396A CN 202010351204 A CN202010351204 A CN 202010351204A CN 113573396 A CN113573396 A CN 113573396A
Authority
CN
China
Prior art keywords
antenna
sar
failed
sensor
state
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010351204.5A
Other languages
Chinese (zh)
Other versions
CN113573396B (en
Inventor
丁嘉裕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oneplus Technology Shenzhen Co Ltd
Original Assignee
Oneplus Technology Shenzhen Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oneplus Technology Shenzhen Co Ltd filed Critical Oneplus Technology Shenzhen Co Ltd
Priority to CN202010351204.5A priority Critical patent/CN113573396B/en
Priority to PCT/CN2021/087895 priority patent/WO2021218673A1/en
Publication of CN113573396A publication Critical patent/CN113573396A/en
Application granted granted Critical
Publication of CN113573396B publication Critical patent/CN113573396B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/283—Power depending on the position of the mobile

Abstract

The embodiment of the invention provides a method, a device and a mobile terminal for controlling an SAR value, wherein the method comprises the following steps: if the situation that at least one SAR sensor in the mobile terminal is in a failure state at present is detected, the position of each failed SAR sensor is obtained, and whether the position of the antenna in the current transmitting state is matched with the position of one failed SAR sensor or not is judged; and if the antenna is matched with the antenna, executing the transmission power limiting operation on the antenna, otherwise, not executing the transmission power limiting operation. The technical scheme of the invention can enable the equipment to more accurately reduce the power-down scene, avoid making useless power limitation as much as possible, ensure the communication capability of the equipment as much as possible even under the condition that the sensor is abnormal, and improve the use experience of a user.

Description

SAR value control method and device and mobile terminal
Technical Field
The invention relates to the technical field of terminal electromagnetic radiation, in particular to a method and a device for controlling an SAR value and a mobile terminal.
Background
Sar (specific Absorption ratio) refers to the electromagnetic radiation energy absorbed by a substance per unit mass per unit time, and is also a measure of the influence exerted on the human body. The larger the SAR value of the mobile phone is, the larger the influence on the human body is; otherwise, the influence is small. In view of the need to protect human health, FCC and CE, etc., have strict control over the security standard SAR values of mobile phones. For the current mobile terminals such as mobile phones, the main core is to control the SAR value by limiting the magnitude of the antenna transmission power of the device. In order to optimize the communication capability of the device, various manufacturers generally choose to introduce various SAR sensors to detect the use scenario of the user, so as to achieve the purpose of targeted power control.
However, when the SAR sensor fails, it is considered that the SAR value may be greater than a prescribed safety standard. In order to prevent the SAR value from exceeding the limit value, it is known through device tests of a plurality of manufacturers that the devices on the market currently adopt two main coping methods: the first is to power off the sensor and directly reduce the transmission power of the device to 0; the second is to power down the sensor, keeping the transmit power of the device down to the power limit threshold when the sensor is triggered.
Although the two schemes can absolutely guarantee that the SAR value does not exceed the standard after the sensor fails, some defects still exist. For example, the first method can make the user obviously perceive that the equipment is abnormal, reduce the usability of the equipment and greatly influence the expectation of the user on the product quality; while the second scheme can effectively solve the defects of the first scheme, the device is always found to be in a power reduction state, and even when the sensor recovers power supply, the power of the device cannot be recovered to be normal, which greatly affects the communication performance and the like of the device.
Disclosure of Invention
In view of the foregoing problems, an object of the embodiments of the present invention is to provide a method and an apparatus for controlling SAR values, and a mobile terminal, so as to solve the deficiencies of the prior art.
An embodiment of the present invention provides a method for controlling an SAR value, including:
if the situation that at least one SAR sensor in the mobile terminal is in a failure state at present is detected, the position of each failed SAR sensor is obtained, and whether the position of the antenna in the current transmitting state is matched with the position of one failed SAR sensor or not is judged;
and if the antenna is matched with the antenna, executing the transmission power limiting operation on the antenna, otherwise, not executing the transmission power limiting operation.
In a possible implementation manner, the SAR value control method further includes: if an antenna switching event is detected, triggering and acquiring the position of the switched antenna in the transmitting state, and judging whether the position of the switched antenna is matched with the position of the SAR sensor in the failure state at present;
and if the antenna is matched with the antenna, executing the transmission power limiting operation on the switched antenna, otherwise, not executing the transmission power limiting operation.
In a possible implementation manner, the SAR value control method further includes: if the number of the failed SAR sensors is at least two, and the antennas corresponding to the at least two failed SAR sensors are in a transmitting state, executing transmitting power limiting operation on the antennas in the transmitting state according to a minimum power limiting threshold;
and the minimum power limit threshold is the minimum value of preset power threshold values of antennas corresponding to the at least two failed SAR sensors.
In a possible implementation manner, the SAR value control method further includes: and detecting the working states of all SAR sensors according to a preset time interval.
In a possible implementation manner, the SAR value control method further includes: and if the failed SAR sensor is detected to be recovered to a normal working state, releasing the transmission power limitation operation on the antenna with the matched position according to the unique identifier of the recovered SAR sensor.
In a possible embodiment, the mobile terminal performs the transmission power limitation operation on the position-matched antenna according to a pre-stored antenna power table.
Another embodiment of the present invention provides an SAR value control apparatus including:
the state detection module is used for detecting the state of each SAR sensor in the mobile terminal;
the position judgment module is used for acquiring the position of each failed SAR sensor if at least one SAR sensor is in a failure state currently, and judging whether the position of the antenna in the current transmitting state is matched with the position of one failed SAR sensor or not;
and the power control module is used for executing the transmission power limiting operation on the antenna if the antenna is matched with the power control module, and otherwise, not executing the transmission power limiting operation.
In a possible embodiment, the SAR value control apparatus further includes: the event triggering module is used for triggering and acquiring the position of the switched antenna in a transmitting state if an antenna switching event is detected;
the position judging module is also used for judging whether the position of the switched antenna is matched with the position of the SAR sensor in the failure state at present;
the power control module is further configured to perform a transmit power limiting operation on the switched antenna if the antenna is matched with the power control module, and not perform the transmit power limiting operation if the antenna is not matched with the power control module.
In a possible embodiment, the SAR value control apparatus further includes:
and the power control module is also used for removing the transmission power limitation operation on the antenna with the matched position according to the unique identifier of the recovered SAR sensor if the failed SAR sensor is detected to be recovered to the normal working state.
In a possible embodiment, the SAR value control apparatus further includes: the state detection module is further used for detecting the working states of all SAR sensors according to a preset time interval.
In a possible embodiment, the SAR value control apparatus further includes: the power control module is further configured to, if the number of the failed SAR sensors is at least two and the antennas corresponding to the at least two failed SAR sensors are in the transmitting state, perform transmit power limiting operation on the antennas in the transmitting state according to a minimum power limiting threshold;
and the minimum power limit threshold is the minimum value of preset power threshold values of antennas corresponding to the at least two failed SAR sensors.
Yet another embodiment of the present invention proposes a mobile terminal comprising a processor and a memory, the memory storing a computer program, the processor being configured to execute the computer program to implement the SAR value control method described above.
Yet another embodiment of the present invention proposes a computer-readable storage medium storing a computer program which, when executed, implements the SAR value control method according to the above.
Embodiments of the invention may include the following beneficial effects:
the SAR value control method of the embodiment of the invention judges whether the position of the failed SAR sensor is matched with the position of the transmitting antenna or not by detecting and acquiring the position of the failed SAR sensor, and performs power limitation only when the position of the failed SAR sensor is matched with the position of the transmitting antenna, otherwise, does not limit the transmitting power of the transmitting antenna, so that the equipment can more accurately reduce the power reduction scene, avoid performing useless power limitation as much as possible, ensure the communication capability of the equipment as much as possible even if the sensor is abnormal, and improve the use experience of a user.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 shows a schematic structural diagram of a mobile terminal of an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of an antenna and a SAR sensor of a mobile terminal;
fig. 3 shows a first flowchart of a SAR value control method according to an embodiment of the present invention;
fig. 4 shows a second flowchart of the SAR value control method according to the embodiment of the present invention;
fig. 5 shows a third flowchart of the SAR value control method according to the embodiment of the present invention;
fig. 6 is a first schematic structural diagram of a SAR value control apparatus according to an embodiment of the present invention;
fig. 7 is a second schematic structural diagram of the SAR value control method according to the embodiment of the present invention.
Description of the main element symbols:
100-mobile phone; 110-RF circuitry; 120-a memory; 130-an input unit; 140-a display unit; 150-a photographing unit; 160-an audio circuit; 170-a WiFi module; 180-a processor; 190-a power supply;
200. 200' -SAR value control means; 210-a state detection module; 220-a position judgment module; 230-a power control module; 240-event trigger module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The components of embodiments of the present invention described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The following embodiments can be applied to a mobile terminal shown in fig. 1, such as a mobile phone, fig. 1 shows a block diagram of the mobile phone, and the mobile phone 100 includes: an RF (Radio Frequency) circuit 110, a memory 120, an input unit 130, a display unit 140, a photographing unit 150, an audio circuit 160, a WiFi (wireless fidelity) module 170, a processor 180, and a power supply 190. Among other things, the RF circuitry 110 may be used to receive and transmit wireless signals, etc.; the memory 120 can be used for storing applications and user-related file information required for the operation of the mobile phone 100. The input unit 130 may include keys, a touch panel, and may also include other input devices, etc. for receiving information input from a user, etc.; the display unit 140 may include a display panel mainly for displaying information such as images and characters; the shooting unit 150 mainly includes front and rear cameras and the like, and is mainly used for shooting pictures, videos and the like; the audio circuit 160 is connected to sound output devices such as a receiver and a speaker and sound input devices such as a microphone, and can be used for recording or playing voice and the like; the WiFi module 170 may be used to transmit and receive WiFi signals to achieve information transmission, etc. The processor 180 is used as a control center of the mobile phone 100, and is mainly used for enabling other units or modules to execute corresponding functions and the like; and the power supply 190 mainly includes a battery device for supplying a required operating voltage and the like to each module or unit in the cellular phone 100.
Those skilled in the art will appreciate that the configuration of the handset 100 shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. The technical solution of the present invention is described below by taking a mobile phone as an example, but the present invention is not limited to be applied to a mobile phone, and can also be applied to a tablet computer capable of communicating and the like.
With the increase of the number of antennas in mobile terminals such as smart phones and tablet computers, in order to ensure that the terminals can meet the SAR value standard at any time, various sensors are usually added in the mobile terminals to detect the use scenes, such as SAR sensors, and the like, so as to achieve targeted power control of the terminals. The mobile terminal applied to the technical scheme of the invention comprises at least one antenna and at least one SAR sensor, wherein the number of the SAR sensors is not more than the number of the antennas, each antenna at most corresponds to one SAR sensor, namely, one antenna has a corresponding SAR sensor, and the other antenna does not have a corresponding SAR sensor.
Accordingly, each SAR sensor corresponds to only one antenna. Note that the hardware positional relationship between the SAR sensor and the antenna in the mobile terminal is fixed at the time of factory shipment, for example, the SAR sensor a is provided at a position corresponding to the antenna a, the SAR sensor B is provided at a position corresponding to the antenna B, the SAR sensor C is provided at a position corresponding to the antenna C, and the antenna D does not have a corresponding SAR sensor, as shown in fig. 2.
Each SAR sensor and antenna has a unique identifier, so that the terminal can judge and control any SAR sensor or antenna. It can be understood that the above location correspondence relationship may refer to associating the unique identifier of the SAR sensor with the unique identifier of the corresponding antenna, for example, by using a unique ID, a unique number, etc., so that when the unique identifier of a certain SAR sensor (i.e., which SAR sensor) is known, the antenna at the corresponding location can be queried, i.e., which antenna is determined.
Generally, an antenna mainly includes two operation states, i.e., a transceiving state (i.e., TRX state) and a reception-only state (i.e., RX _ only state). The TRX state refers to a state in which the antenna can be used for both transmitting and receiving, and may also be referred to as a transmission state; and RX _ only state refers to a state in which the antenna is used for reception only. For the antenna in the RX _ only state, since the antenna does not transmit a signal, there is no problem that the SAR value exceeds the standard, for example, the antenna is used as an antenna for a diversity reception function. In addition, some antennas can be switched between the two states at different times with the support of software and hardware.
Only the antenna in the transmitting state needs to control the transmitting power, so that the transmitting power value can not exceed the value specified by the SAR value standard. In the technical solution of the present invention, the emission state mainly refers to an emission sub-state in a TRX state, and of course, in a broad sense, the emission state may also refer to a TRX state including an emission sub-state.
Generally, a SAR sensor comprises two operating states, a normal operating state and a failure state. It can be understood that, for an SAR sensor in a failure state, the SAR sensor cannot detect an SAR value, and the cause of the failure may be various, and some may cause permanent failure, such as irreversible damage to the SAR sensor itself; some SAR sensors may fail only temporarily, for example, some software level conflicts occur to cause abnormal use of some SAR sensors. In some cases, for a SAR sensor that temporarily fails, the SAR sensor may be restored to a normal operating state after power supply is restored.
Aiming at least one defect of two schemes in the prior art, the SAR value control method provided by the embodiment of the invention can better solve some problems in the prior art by detecting the state of each SAR sensor and judging the position of the antenna in the transmitting state so as to determine whether to reduce the power, so that the equipment can avoid useless power limitation as far as possible, and the communication capability of the equipment can be ensured as far as possible even if the sensor is abnormal, thereby improving the user experience and the like.
The present invention will be described below with reference to specific examples, but the present invention is not limited to these specific examples.
Example 1
Fig. 3 shows a flow chart of an embodiment of the SAR value control method of the present invention.
Step S110, if it is detected that at least one SAR sensor in the mobile terminal is in a failure state, the position of each failed SAR sensor is obtained.
In step S110, before acquiring the location of the failed SAR sensor, the mobile terminal detects whether there is at least one SAR sensor that is abnormal at present, that is, in a failed state. Each SAR sensor has a unique identifier, such as an ID value or a unique number, so that which SAR sensor is abnormal can be known according to the unique identifier of the failed SAR sensor.
In one embodiment, the mobile terminal may determine whether at least one SAR sensor is currently in a failure state by querying whether an event indicating that the SAR sensor is abnormal is received.
Generally, all the SAR sensors do not report an abnormal event in a normal working state, and if a certain SAR sensor is abnormal, the bottom layer of the mobile terminal reports a corresponding event a to an upper layer application to indicate that the SAR sensor is abnormal. The event a includes a unique identifier of the corresponding failed SAR sensor, preferably, an ID value. Therefore, if the event a is received, it can be determined that at least one SAR sensor is currently in a failure state, and the ID information of the failed SAR sensor is obtained from the event a, so as to obtain the location of each failed SAR sensor.
It should be understood that, in addition to the above-mentioned detecting whether there is at least one SAR sensor currently in a failure state by querying the event type, the above-mentioned detection purpose may also be achieved by querying the state indication signal of each SAR sensor and determining whether there is an abnormality of at least one SAR sensor according to the value of each state indication signal, and the like, and the detection is not limited herein.
Step S120, determining whether the position of the antenna currently in the transmitting state matches the position of a failed SAR sensor.
Generally, a mobile terminal includes at least one antenna, some antennas can be used for receiving and transmitting signals, and some antennas can be used for signal reception only. In this embodiment, the antenna currently in a transmission state (hereinafter referred to as a transmission antenna) preferentially refers to a transmission sub-state of the antenna in a TRX state.
After the position information of each failed sensor is obtained, in step S210, the position condition of the transmitting antenna is further determined, and then whether to limit the power of the transmitting antenna is determined according to whether the position of the transmitting antenna is matched with the position of the failed SAR sensor.
In one embodiment, the mobile terminal may determine which antenna or antennas are currently in the transmitting state by querying the value for the status indication of each antenna, so as to obtain the location of each transmitting antenna. In another alternative, the mobile terminal may directly query which antennas are currently transmitting signals, and so on.
In addition, in order to ensure normal data transmission when the signal of the antenna in the original transmitting state suddenly appears too poor during the use of the user, the mobile terminal usually performs an antenna automatic switching operation, that is, the current antenna is switched to another antenna to continue data transmission. If the state of the antenna changes, whether the SAR sensor corresponding to the antenna in the transmitting state after switching is in the failure state can be further judged, and therefore useless power limitation can be avoided.
In one embodiment, the SAR value control method further comprises: and if the antenna switching event is detected, triggering and acquiring the position of the switched antenna in the transmitting state. For example, an interrupt trigger with high priority may be used, that is, when an antenna switching event occurs, the interrupt trigger is used to trigger the acquisition of the position of the switched antenna.
And then judging whether the position of the switched antenna is matched with the position of the SAR sensor in the failure state at present or judging whether the SAR sensor corresponding to the position of the switched antenna is in the failure state. If the SAR sensor corresponding to the switched antenna is in a failure state, executing the transmission power limiting operation on the switched antenna, otherwise, not executing the transmission power limiting operation.
In this embodiment, the mobile terminal stores a positional relationship table between the SAR sensor and the antenna in advance, for example, the positions of the SAR sensor and the antenna can be associated according to their respective unique identifiers, such as ID and number. Each antenna corresponds to at most one SAR sensor, as shown in fig. 2. In addition, each antenna also stores a corresponding preset power threshold in advance, and the situation that the SAR value exceeds the standard can be avoided when the mobile terminal transmits on the basis of the preset power threshold.
In step S120, the positions of the failed SAR sensors and the transmitting antenna are known, and the position relationship table is queried, so as to determine whether the position of the transmitting antenna matches a corresponding failed SAR sensor.
Exemplarily, if the antenna currently in the transmitting state corresponds to a failed SAR sensor, i.e. the positions of the two are matched, the transmitting power limitation is performed on the antenna matched in the position, i.e. step S130. Otherwise, the transmit power limitation is not performed on the transmit antenna with the position mismatch, in other words, if the SAR sensor corresponding to the antenna in the transmit state is not failed, step S140 is performed. Therefore, after the SAR sensor fails, only the antenna in the transmitting state with the matched position is subjected to power limitation, the use scene of more accurate power limitation reduction is realized, and other invalid power limitations are reduced.
Step S130, performing a transmit power limiting operation on the antenna.
Step S140, the transmission power limiting operation is not performed.
It should be understood that the antenna in step S130 refers to a position-matched antenna in a transmitting state. In step S130, when the transmission power limitation is performed, for example, the power limitation operation may be performed according to an antenna power table stored in advance in the mobile terminal. It can be understood that the antenna power meter includes preset power thresholds corresponding to the antennas in different operating states, and each preset power threshold may be specifically determined through multiple tests in actual applications.
Considering the number of antennas in the transmitting state and the number of failed SRA sensors, which may be one or more, respectively, the following description is given for each case.
In a first possible case, if there is only one transmitting antenna and there is only one failed SAR sensor, it is only necessary to determine whether the transmitting antenna corresponds to the failed SAR sensor, and if the positions of the transmitting antenna and the failed SAR sensor correspond to each other, the transmitting antenna is subjected to a transmit power limiting operation. Otherwise, the above-mentioned transmit power limiting operation is not performed for the transmit antenna.
In a second possible case, if there is only one transmitting antenna but there are a plurality of failed SAR sensors, it is only necessary to determine whether the transmitting antenna corresponds to one of the failed SAR sensors, and if there is one corresponding to the position, the transmitting antenna is subjected to the transmit power limiting operation. Otherwise, the above-mentioned transmit power limiting operation is not performed for the transmit antenna.
Under a third possible condition, if the number of the transmitting antennas is multiple, but the number of the failed SAR sensor is one, it needs to be determined whether there is one of the transmitting antennas corresponding to the location of the failed SAR sensor, and if so, the transmitting power limiting operation is performed on the transmitting antenna matched with the location; while the other transmitting antennas with position mismatch do not operate, i.e. do not have the power limitation mentioned above.
Under a fourth possible condition, if the number of the transmitting antennas is multiple and the number of the failed SAR sensors is multiple, determining whether each transmitting antenna has a failed SAR sensor corresponding thereto, and when at least two transmitting antennas have corresponding failed SAR sensors, that is, the antennas corresponding to the at least two failed SAR sensors are in a transmitting state, performing transmit power limitation operation on the transmitting antennas matched in the positions.
For the fourth case, it is preferable that the transmitting antennas matched in position are all subjected to transmitting power limitation according to the lowest power limitation threshold. The minimum power limit threshold is the minimum value of preset power threshold values of the transmitting antennas corresponding to the failed SAR sensor.
Taking the structure of the antenna and the SAR sensor shown in fig. 2 as an example, where the antennas a-C and the SAR sensors a-C have a position corresponding relationship in sequence, and the antenna D does not have a corresponding SAR sensor. If it is known that antenna A, B is currently in a transmitting state while both SAR sensors a, B are in a failed state, then both antennas a and B will be transmit power limited. Suppose that the power limiting threshold values for the antennas A and B are PAAnd PBWherein P isAGreater than PBThen, take PBAs a minimum power limit value, i.e. limiting the transmission power of antennas a and B to P, respectivelyB。
It will be appreciated that for the four cases described above, when there is only one failed SAR sensor, or when there is only one antenna in the transmitting state, then only the matching antenna in the transmitting state needs to be power limited, typically according to a pre-set power threshold in a pre-stored antenna power table. And when the antennas corresponding to a plurality of failed SAR sensors are in a transmitting state, the antennas matched with the positions are subjected to transmitting power limiting operation according to the lowest power limiting threshold value.
The SAR value control method of the embodiment determines whether to perform power limitation on the antenna in the transmitting state according to the matching result by judging whether the position of the failed SAR sensor is matched with the position of the antenna in the transmitting state. Furthermore, when there are a plurality of failed SAR sensors, the transmit power limiting operation is performed according to the lowest power limiting threshold for the antennas in the transmitting state corresponding to the failed SAR sensors. In addition, in consideration of a scenario such as antenna switching, if the switched antenna in the transmission state corresponds to a failed SAR sensor, the transmission power limiting operation and the like are also performed. The method can enable the equipment to more accurately reduce the power reduction scene, avoid making useless power limitation as much as possible, ensure the communication capability of the equipment as much as possible even under the condition that the sensor is abnormal, and improve the use experience of a user.
Example 2
Fig. 4 shows a flow chart of another embodiment of the SAR value control method of the present invention.
And step S210, detecting the working states of all SAR sensors according to a preset time interval.
Exemplarily, the mobile terminal will periodically detect the working states of all SAR sensors, for example, a timer may be started after each SAR sensor is initialized, that is, the working state of each SAR sensor is queried once every preset time interval, so that the working state of each SAR sensor can be known in time, the transmission power can be controlled, and the problem that the SAR value exceeds the standard at any time can be ensured. The preset time interval may be set according to actual requirements, and is not limited herein.
Step S220, if detecting that at least one SAR sensor in the mobile terminal is in a failure state currently, acquiring the position of each failed SAR sensor.
Exemplarily, this step is the same as step S110 in embodiment 1, and is not described again here.
Step S230, determining whether the position of the antenna currently in the transmitting state matches the position of a failed SAR sensor.
Exemplarily, this step is the same as step S120 in embodiment 1, and is not described again here.
Step S240, performing a transmit power limiting operation on the position-matched antenna.
Exemplarily, this step is the same as step S130 in embodiment 1, and is not described again here.
Step S250, the above-mentioned transmit power limiting operation is not performed.
Exemplarily, this step is the same as step S140 in embodiment 1, and is not described again here.
In addition, considering that some SAR sensors may be temporarily disabled, the present embodiment further detects whether there is a SAR sensor that is restored to a normal operating state after being disabled, so that the transmission power of the transmission antenna corresponding to the restored SAR sensor can be released, so as to improve the communication performance of the mobile terminal, and the like.
In a preferred embodiment, as shown in fig. 5, the SAR value control method further includes:
and step S260, detecting whether the failed SAR sensor is recovered to be in a normal working state or not.
Exemplarily, the working state of each SAR sensor may be periodically polled, and compared with the result of the previous polling, if the SAR sensor in the failed state is found to be restored to the normal working state, an event B about restoration of the SAR sensor may be reported to the upper layer application. The event B includes a unique identifier, such as an ID or a unique number, of the recovered SAR sensor.
Then, if the event B is received, it may be determined that the failed SAR sensor is recovered to a normal operating state, step S270 is executed, otherwise, the current transmit power limiting operation is maintained.
And step S270, releasing the above transmission power limiting operation on the position matched antenna according to the recovered unique identifier of the SAR sensor.
Exemplarily, the previous transmission power limitation on the antenna can be released according to the recovered ID value of the SAR sensor, so that the antenna can operate in a better state as much as possible, and the mobile terminal is ensured to have better communication capability.
It is to be understood that the alternatives in the SAR value control method of embodiment 1 are also applicable to this embodiment, and therefore, the descriptions thereof are omitted here.
According to the SAR value control method, the working states of all SAR sensors are periodically detected, on one hand, whether other SAR sensors are in a failure state or not can be timely found, and then quick response can be achieved, so that the problem that the SAR value exceeds the standard is avoided. On the other hand, whether the corresponding failed SAR sensor is recovered to the normal working state or not can be inquired, if the failure occurs, the restriction on the emission power limit of the antenna corresponding to the SAR sensor can be timely removed, and therefore the communication performance of the mobile terminal and the like can be guaranteed to the greatest extent.
Example 3
Fig. 6 is a schematic structural diagram showing an embodiment of the SAR value control apparatus of the present invention.
Exemplarily, the SAR value control device 200 includes:
and a state detection module 210, configured to detect states of the SAR sensors in the mobile terminal.
The antenna position determining module 220 is configured to, if at least one SAR sensor is in a failure state currently, obtain the position of each failed SAR sensor, and determine whether the position of the antenna in the transmission state currently matches the position of one failed SAR sensor.
An antenna power control module 230, configured to perform a transmit power limitation operation on the antenna if the antenna is matched, and not perform the transmit power limitation operation if the antenna is not matched.
In one embodiment, as shown in fig. 7, the SAR value control apparatus 200' further includes:
an event triggering module 240, configured to trigger obtaining of the position of the antenna in the transmitting state after switching if an antenna switching event is detected.
The antenna position determining module 220 is further configured to determine whether the position of the switched antenna matches the position of the SAR sensor currently in the failure state.
The antenna power control module 230 is further configured to perform a transmit power limiting operation on the switched antenna if the antenna is matched with the switched antenna, and otherwise, not perform the transmit power limiting operation.
In one embodiment, the SAR value control apparatus 200 further includes:
the antenna power control module 230 is further configured to, if the number of the failed SAR sensors is at least two, and the antennas corresponding to the at least two failed SAR sensors are all in a transmission state, perform a transmission power limiting operation on the antennas in the transmission state according to a minimum power limiting threshold. And the minimum power limit threshold is the minimum value of preset power threshold values of antennas corresponding to the at least two failed SAR sensors.
In one embodiment, the SAR value control apparatus 200 further includes:
the sensor state detection module 210 is further configured to detect the operating states of all the SAR sensors according to a preset time interval.
The antenna power control module 230 is further configured to, if it is detected that the failed SAR sensor is recovered to a normal working state, remove the transmit power limitation operation on the antenna with the matched position according to the unique identifier of the recovered SAR sensor.
It is understood that the SAR value control apparatus 200 described above corresponds to the SAR value control method of embodiment 1 or 2. The options in embodiment 1 or 2 are also applicable to this embodiment and will not be described in detail here.
The invention also provides a mobile terminal which can comprise a smart phone, a tablet computer and the like. The mobile terminal is preferably a smart phone or a tablet computer. The mobile terminal comprises a memory and a processor, wherein the memory stores a computer program, and the processor enables the mobile terminal to execute the functions of each module in the SAR value control method or the SAR value control device by running the computer program.
The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the mobile terminal, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The present invention also provides a computer-readable storage medium for storing the computer program used in the above-mentioned mobile terminal.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s).
It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part of the technical solution that contributes to the prior art in essence can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Claims (10)

1. A SAR value control method is characterized by comprising the following steps:
if the situation that at least one SAR sensor in the mobile terminal is in a failure state at present is detected, the position of each failed SAR sensor is obtained, and whether the position of the antenna in the current transmitting state is matched with the position of one failed SAR sensor or not is judged;
and if the antenna is matched with the antenna, executing the transmission power limiting operation on the antenna, otherwise, not executing the transmission power limiting operation.
2. The SAR value control method of claim 1, further comprising:
if an antenna switching event is detected, triggering and acquiring the position of the switched antenna in the transmitting state, and judging whether the position of the switched antenna is matched with the position of the SAR sensor in the failure state at present;
and if the antenna is matched with the antenna, executing the transmission power limiting operation on the switched antenna, otherwise, not executing the transmission power limiting operation.
3. The SAR value control method of claim 1, further comprising:
if the number of the failed SAR sensors is at least two, and the antennas corresponding to the at least two failed SAR sensors are in a transmitting state, executing transmitting power limiting operation on the antennas in the transmitting state according to a minimum power limiting threshold;
and the minimum power limit threshold is the minimum value of preset power threshold values of antennas corresponding to the at least two failed SAR sensors.
4. The SAR value control method according to any one of claims 1 to 3, characterized by further comprising:
and detecting the working states of all SAR sensors according to a preset time interval.
5. The SAR value control method of claim 4, further comprising:
and if the failed SAR sensor is detected to be recovered to a normal working state, releasing the transmission power limitation operation on the antenna with the matched position according to the unique identifier of the recovered SAR sensor.
6. The SAR value control method of claim 1, wherein the mobile terminal performs the transmission power limiting operation on the location-matched antenna according to a pre-stored antenna power table.
7. An SAR value control apparatus, comprising:
the state detection module is used for detecting the state of each SAR sensor in the mobile terminal;
the position judgment module is used for acquiring the position of each failed SAR sensor if at least one SAR sensor is in a failure state currently, and judging whether the position of the antenna in the current transmitting state is matched with the position of one failed SAR sensor or not;
and the power control module is used for executing the transmission power limiting operation on the antenna if the antenna is matched with the power control module, and otherwise, not executing the transmission power limiting operation.
8. The SAR value control device of claim 7, further comprising:
the event triggering module is used for triggering and acquiring the position of the switched antenna in a transmitting state if an antenna switching event is detected;
the position judging module is also used for judging whether the position of the switched antenna is matched with the position of the SAR sensor in the failure state at present;
the power control module is further configured to perform a transmit power limiting operation on the switched antenna if the antenna is matched with the power control module, and not perform the transmit power limiting operation if the antenna is not matched with the power control module.
9. A mobile terminal, characterized in that the mobile terminal comprises a processor and a memory, the memory storing a computer program for executing the computer program to implement the SAR value control method of any of claims 1-6.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when executed, implements the SAR value control method according to any one of claims 1-6.
CN202010351204.5A 2020-04-28 2020-04-28 SAR value control method and device and mobile terminal Active CN113573396B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010351204.5A CN113573396B (en) 2020-04-28 2020-04-28 SAR value control method and device and mobile terminal
PCT/CN2021/087895 WO2021218673A1 (en) 2020-04-28 2021-04-16 Sar value control method and apparatus, and mobile terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010351204.5A CN113573396B (en) 2020-04-28 2020-04-28 SAR value control method and device and mobile terminal

Publications (2)

Publication Number Publication Date
CN113573396A true CN113573396A (en) 2021-10-29
CN113573396B CN113573396B (en) 2022-11-08

Family

ID=78158116

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010351204.5A Active CN113573396B (en) 2020-04-28 2020-04-28 SAR value control method and device and mobile terminal

Country Status (2)

Country Link
CN (1) CN113573396B (en)
WO (1) WO2021218673A1 (en)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202817169U (en) * 2012-08-28 2013-03-20 东莞骅国电子有限公司 Apparatus for reducing antenna radiation energy
CN103634061A (en) * 2013-11-13 2014-03-12 南京捷希科技有限公司 Electromagnetic radiation monitoring system
US20140357207A1 (en) * 2012-02-09 2014-12-04 Zte Corporation Method And Mobile Terminal For Regulating Specific Absorption Rate By Using Sensor
CN204481862U (en) * 2014-11-28 2015-07-15 惠州Tcl移动通信有限公司 SAR device, protective sleeve and terminal fall in intelligence
CN106656236A (en) * 2016-10-31 2017-05-10 维沃移动通信有限公司 Method of reducing a SAR on the basis of multiple antennas and electronic device
CN106876881A (en) * 2017-03-27 2017-06-20 联想(北京)有限公司 Mobile terminal
CN107534805A (en) * 2015-05-26 2018-01-02 英特尔公司 Sensor-based signal transmitting method and device
US9883462B2 (en) * 2015-12-08 2018-01-30 Samsung Electronics Co., Ltd. Electronic device and power back off control method thereof
CN107884766A (en) * 2017-10-11 2018-04-06 歌尔股份有限公司 Enter the method, apparatus and electronic equipment of row distance detection based on antenna
CN207818898U (en) * 2017-12-27 2018-09-04 广东欧珀移动通信有限公司 Antenna assembly and mobile terminal
CN108601073A (en) * 2018-07-09 2018-09-28 深圳市万普拉斯科技有限公司 Reduce method, mobile terminal and the computer readable storage medium of SAR
US20180287650A1 (en) * 2017-03-31 2018-10-04 Microsoft Technology Licensing, Llc Proximity-independent sar mitigation
CN109474740A (en) * 2018-11-08 2019-03-15 闻泰通讯股份有限公司 Reduce method, system and the mobile terminal of SAR value

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108307062A (en) * 2018-01-24 2018-07-20 广东欧珀移动通信有限公司 Antenna switching method, system, electronic device and computer readable storage medium

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140357207A1 (en) * 2012-02-09 2014-12-04 Zte Corporation Method And Mobile Terminal For Regulating Specific Absorption Rate By Using Sensor
CN202817169U (en) * 2012-08-28 2013-03-20 东莞骅国电子有限公司 Apparatus for reducing antenna radiation energy
CN103634061A (en) * 2013-11-13 2014-03-12 南京捷希科技有限公司 Electromagnetic radiation monitoring system
CN204481862U (en) * 2014-11-28 2015-07-15 惠州Tcl移动通信有限公司 SAR device, protective sleeve and terminal fall in intelligence
CN107534805A (en) * 2015-05-26 2018-01-02 英特尔公司 Sensor-based signal transmitting method and device
US9883462B2 (en) * 2015-12-08 2018-01-30 Samsung Electronics Co., Ltd. Electronic device and power back off control method thereof
CN106656236A (en) * 2016-10-31 2017-05-10 维沃移动通信有限公司 Method of reducing a SAR on the basis of multiple antennas and electronic device
CN106876881A (en) * 2017-03-27 2017-06-20 联想(北京)有限公司 Mobile terminal
US20180287650A1 (en) * 2017-03-31 2018-10-04 Microsoft Technology Licensing, Llc Proximity-independent sar mitigation
CN107884766A (en) * 2017-10-11 2018-04-06 歌尔股份有限公司 Enter the method, apparatus and electronic equipment of row distance detection based on antenna
CN207818898U (en) * 2017-12-27 2018-09-04 广东欧珀移动通信有限公司 Antenna assembly and mobile terminal
CN108601073A (en) * 2018-07-09 2018-09-28 深圳市万普拉斯科技有限公司 Reduce method, mobile terminal and the computer readable storage medium of SAR
CN109474740A (en) * 2018-11-08 2019-03-15 闻泰通讯股份有限公司 Reduce method, system and the mobile terminal of SAR value

Also Published As

Publication number Publication date
CN113573396B (en) 2022-11-08
WO2021218673A1 (en) 2021-11-04

Similar Documents

Publication Publication Date Title
CN110536347B (en) Power consumption control method and device of terminal and storage medium
US11706746B2 (en) Method and terminal for controlling bandwidth part inactivity timer
KR101881429B1 (en) Method and system for controlling intelligent wearable device, and apparatus
CN110636593B (en) Connection mode control method, terminal and storage medium
US8495229B2 (en) Method of defending against battery exhaustion attack and wireless communication device and recording medium using the method
US20070142001A1 (en) System and method for implementing antenna diversity
CN110012554B (en) Wireless link recovery method and terminal
EP2765483B1 (en) Method and device for controlling shutdown of terminal
CN106982450B (en) Communication exception handling method and device and mobile terminal
CA3072973C (en) Discontinuous reception method, terminal device and network device
CN112996032B (en) Communication link control method, device, mobile terminal and readable storage medium
CN110944371A (en) Paging configuration adjustment method, terminal, network equipment and storage medium
US20210068085A1 (en) Signal receiving method, signal transmission method, user equipment, and network device
US20220255617A1 (en) Information transmission method and device
CN113573396B (en) SAR value control method and device and mobile terminal
US20140342770A1 (en) Method for selecting an antenna set and wireless communication device utilizing the same
KR101543286B1 (en) Method for state transition and network equipment
CN111478817A (en) Network fault processing method and device, storage medium and mobile device
CN106993305B (en) Communication exception handling method and device and mobile terminal
US11690119B2 (en) Communication apparatus, method for controlling communication apparatus and non-transitory computer-readable storage medium
US20210352500A1 (en) Method for pucch transmission, method for pucch reception, terminal, and network-side device
CN113037445B (en) Signal path self-adaptation method and device and mobile terminal
CN115568011A (en) Method for user equipment to initiate IMS registration and corresponding user equipment
US8532625B2 (en) Apparatus and method for preventing multimedia message retrieval in mobile communication system
CN112788786A (en) Network connection control method, terminal and storage medium

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant