CN111885692A

CN111885692A - Method and device for adjusting SAR value and mobile terminal

Info

Publication number: CN111885692A
Application number: CN202010699220.3A
Authority: CN
Inventors: 杨新妮
Original assignee: TCL Communication Ningbo Ltd
Current assignee: TCL Communication Ningbo Ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2020-11-03
Anticipated expiration: 2040-07-20
Also published as: CN111885692B

Abstract

The embodiment of the invention discloses a method, a device and a mobile terminal for adjusting SAR value, wherein the method comprises the following steps: detecting an overlapped frequency band of a wireless wide area network and at least one wireless network accessed to the mobile terminal; judging that the wireless network is in an open state, and reducing the transmitting power of the antenna corresponding to the overlapped frequency band; and judging that the wireless network is in a closed state, and increasing the transmitting power of the antenna corresponding to the overlapped frequency band. According to the scheme, the SAR value is reduced and the exceeding of the SAR value is avoided under the condition that the communication quality is guaranteed to be as good as possible by adjusting the transmitting power of the antenna corresponding to the overlapped frequency band.

Description

Method and device for adjusting SAR value and mobile terminal

Technical Field

The invention relates to the field of mobile terminals, in particular to a method and a device for adjusting an SAR value and a mobile terminal.

Background

The proliferation of mobile applications has prompted the increasing complexity of wireless access modes and access capabilities used by smart phones. The carrier's mobile Network WWAN (Wide Area Network) has a demand for data traffic far exceeding voice traffic in the smart phone era. Wireless Local Area Network (WIFI) and short-range PAN (Personal Area Network) networks are indispensable, Wireless positioning Network GPS, big dipper etc. are also standard matches, compromise the technologies such as NFC of thing networking simultaneously, RFID, LORA also can see often. Common mobile data services include social software, web video, news information, e-commerce shopping, map navigation, data synchronization, software upgrade, and the like. Everyday applications are accessed anytime using the operator's WWAN network, less urgent intensive data traffic such as software upgrades, data synchronization, etc., is typically limited to use when accessing WLAN networks. Due to the protection of human health, each country makes strict standard definition for the emission of terminal products, and the smart phone is mainly defined at the head use position of a transceiver phone, is close to the use position in normal use, meets the requirement of the radio radiation receiving ratio SAR, and is allowed to be on the market, such as CE in Europe, FCC in North America, and CTA certification in China.

Due to the superposition of multiple wireless access modes, SAR values required by regulations are easy to exceed the standard, and the problem is tried to be solved in the common scene.

Disclosure of Invention

The embodiment of the invention provides a method and a device for adjusting an SAR value and a mobile terminal, which are used for avoiding the SAR value exceeding the standard.

The method for adjusting the SAR value provided by the embodiment of the invention comprises the following steps: detecting an overlapped frequency band of a wireless wide area network and at least one wireless network accessed to the mobile terminal; judging that the wireless network is in an open state, and reducing the transmitting power of the antenna corresponding to the overlapped frequency band; and judging that the wireless network is in a closed state, and increasing the transmitting power of the antenna corresponding to the overlapped frequency band.

Optionally, in some embodiments of the present invention, the detecting overlapping frequency bands of the wireless wide area network and at least one wireless network accessing the mobile terminal includes:

the wireless access network comprises a WIFI network, a personal area network, a positioning network and an Internet of things.

Optionally, in some embodiments of the present invention, the determining that the wireless network is in an on state and reducing the transmission power of the antenna corresponding to the overlapped frequency band includes:

judging that the mobile terminal is close to the head of a user, and detecting a network type corresponding to the running application;

the wireless network operates the application and reduces the transmitting power of the antenna corresponding to the frequency band of the wireless wide area network;

and the wireless wide area network operates the application and reduces the transmitting power of the antenna corresponding to the frequency band of the wireless network.

judging that the mobile terminal is close to the head of the user, closing the personal area network, the positioning network and the Internet of things, and recording SAR values corresponding to frequency bands of the personal area network, the positioning network and the Internet of things;

and judging that the mobile terminal is far away from the head of the user, and calculating the sum of the SAR values, wherein the sum is in the range of SAR standard values.

Optionally, in some embodiments of the present invention, the determining that the mobile terminal is close to the head of the user includes:

and judging that the mobile terminal is close to the head of the user according to output data of a sensor group, wherein the sensor group comprises a light sensor, a heat-sensitive sensor, a proximity sensor and a gravity sensor.

Optionally, in some embodiments of the present invention, the method includes:

and judging that the mobile terminal is far away from the head of the user, and recovering the transmitting power of the antenna corresponding to the frequency band of the wireless wide area network or the transmitting power of the antenna corresponding to the frequency band of the wireless access network.

Correspondingly, an apparatus for reducing an SAR value according to an embodiment of the present invention includes:

the mobile terminal comprises a detection unit, a processing unit and a processing unit, wherein the detection unit is used for detecting the overlapped frequency bands of a wireless wide area network and at least one wireless network accessed to the mobile terminal;

the adjusting unit is used for judging that the wireless network is in an open state and reducing the transmitting power of the antenna corresponding to the overlapped frequency band; and judging that the wireless network is in a closed state, and increasing the transmitting power of the antenna corresponding to the overlapped frequency band.

Optionally, in some embodiments of the present invention, the adjusting unit includes:

the judging unit is used for judging that the mobile terminal is close to the head of a user and detecting the network type corresponding to the running application;

the adjusting subunit is used for the wireless network to run the application and reduce the transmitting power of the antenna corresponding to the frequency band of the wireless wide area network; and the wireless wide area network operates the application and reduces the transmitting power of the antenna corresponding to the frequency band of the wireless network.

Correspondingly, the embodiment of the invention also provides a mobile terminal, which comprises a memory and a processor, wherein the memory stores an application program, and the processor is used for running the application program in the memory to execute the operation in the method for adjusting the SAR value.

Optionally, in some embodiments of the present invention, the mobile terminal includes the above-mentioned apparatus for adjusting the SAR value.

The embodiment of the invention detects the overlapped frequency bands of the wireless wide area network and at least one wireless network accessed to the mobile terminal; judging that the wireless network is in an open state, and reducing the transmitting power of the antenna corresponding to the overlapped frequency band; and judging that the wireless network is in a closed state, and increasing the transmitting power of the antenna corresponding to the overlapped frequency band. Therefore, the scheme can reduce the SAR value and avoid the SAR value exceeding the standard under the condition of ensuring the communication quality to be as good as possible by adjusting the transmitting power of the antenna corresponding to the overlapped frequency band.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic flowchart of a method for adjusting an SAR value according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an apparatus for adjusting an SAR value according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a method for adjusting an SAR value according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the invention provides a method and a device for adjusting an SAR value and a mobile terminal. The mobile terminal of the embodiment of the invention can be a mobile phone, a tablet computer, a notebook computer and other equipment.

The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.

The embodiment will be described from the perspective of an apparatus integrated in a mobile terminal, which may include a mobile phone, a wearable smart device, a tablet computer, a notebook computer, a Personal Computer (PC), and the like.

A method of adjusting a SAR value, comprising: detecting an overlapped frequency band of a wireless wide area network and at least one wireless network accessed to the mobile terminal; judging that the wireless network is in an open state, and reducing the transmitting power of the antenna corresponding to the overlapped frequency band; and judging that the wireless network is in a closed state, and increasing the transmitting power of the antenna corresponding to the overlapped frequency band.

As shown in fig. 1, a specific process of the method for adjusting the SAR value may be as follows:

101. detecting overlapping frequency bands of the wireless wide area network and at least one wireless network accessing the mobile terminal.

For example, when the smartphone is powered on, the wireless wide area network WWAN of the operator must be accessed, and other wireless networks accessing the mobile terminal are turned on or off according to the needs of the user. The mobile terminal detects a frequency band of the wireless wide area network overlapping with at least one wireless network accessed to the mobile terminal.

The wireless access network comprises a WIFI network, a personal area network, a positioning network and an Internet of things. Personal area networks such as bluetooth BT, positioning networks such as GPS networks, Beidou and other satellite positioning networks, and internet of things such as NFC, RFID, LORA and the like.

Among them, the wireless wide area network of the operator has wide coverage, and is still the only network for providing reliable voice service at present. In the data service of the wireless wide area network, the difference of different RAT rates is large, the service quality of the LTE network with high speed is obviously reduced along with the increase of the number of the access people, and the expense is high. The WIFI network provides a high-speed data service network covered by a local area, can configure the access capability locally, is basically free of charge, is suitable for crowds moving in the area, and meets the intensive data application requirements, such as software upgrading, data synchronization, network multimedia services and the like. The wireless wide area network and the WIFI network are automatically switched, the WIFI network is preferentially used for data services, and the data services can be automatically accessed when the coverage area available for the WIFI network exists. The WIFI network uses 2.4GHz and 5GHz BANDs, overlapping with BAND1 of LTE at 2.4 GHz. Generally, when the wireless wide area network and the WIFI network are used separately, the radiation power is adjusted to the maximum value allowed by the SAR, so as to ensure a sufficiently long communication distance and communication quality, and when the wireless wide area network and the WIFI network are used in a superposed manner, the power of each other needs to be reduced separately.

102. And judging that the wireless network is in an open state, and reducing the transmitting power of the antenna corresponding to the overlapped frequency band.

For example, when at least one wireless network is in an on state, the transmission power of the antenna corresponding to the frequency band where the wireless wide area network and the wireless access network overlap is reduced. The value of the reduced power is generally not more than 0.5dBm, and the optimal value is that the normal transmitting power of the antenna corresponding to the frequency band is reduced by about 0.5 dBm. The wireless network is a wireless network with a large influence factor.

In some typical applications, such as voice telephony, video telephony, IP telephony, and some private communication services, the user may choose to use the phone close to the head. The mobile terminal judges whether the mobile terminal of the user is close to the head to use or not according to output data of a sensor group, wherein the sensor group comprises a light sensor, a heat-sensitive sensor, a proximity sensor and a gravity sensor. Since safety regulations require that the head proximity state is lower than the body proximity state SAR value, there is a need to further reduce the radiated power when in the head proximity communication state, i.e., the power of the non-priority wireless network needs to be reduced, typically by no more than 1.5dBm, depending on the type of application.

Judging whether the mobile terminal is close to the head of the user, namely, whether an application needing the mobile terminal to be close to the head of the user runs is judged, detecting a network type corresponding to the running application at the moment, and if the wireless network runs the application, reducing the transmitting power of an antenna corresponding to the frequency band of the wireless wide area network; if the wireless wide area network runs the application, the transmitting power of the antenna corresponding to the frequency band of the wireless access network is reduced.

Taking the WIFI network as an example, after a user starts up or in a using process, no matter whether the WIFI network is in an IDLE state or a connected state, the mobile terminal monitors and reports that the WIFI is in the IDLE state or the connected state. If the mobile terminal is judged to be close to the head of the user according to the output data of the sensor group, the network type corresponding to the application is detected when the application is operated, namely after the WIFI network is started, whether the WIFI network is in an idle state or a connected state can be known based on the report of the mobile terminal, if the WIFI network is in the connected state, the application is operated under the WIFI network, and if the WIFI network is in the idle state, the application is operated under the wireless wide area network. If the application runs under a WIFI network, such as a WIFI telephone, the radiation of the wireless wide area network, namely the transmitting power of an antenna corresponding to the frequency band of the wireless wide area network, is reduced; if the application runs under the wireless wide area network, such as operator voice, the transmitting power of an antenna corresponding to the frequency band of the WIFI network is reduced; if the network type of the application cannot be judged, the transmitting power of the antenna corresponding to the frequency band of the WIFI network is preferentially reduced.

After the mobile terminal is judged to be close to the head of the user, satellite positioning networks such as Bluetooth BT, GPS, Beidou and the like and the working state of the Internet of things need to be detected, if the personal area network, the positioning networks and the Internet of things are in an open state, frequency bands corresponding to the networks are closed to achieve a better SAR value range, and SAR values corresponding to the power of the frequency bands of the networks are recorded. And after the application operation of the mobile terminal close to the head of the user is finished, calculating the sum of SAR values of the power of the network frequency bands according to the recorded SAR values, judging whether the sum of the SAR values is within the range of the SAR standard value, and determining whether to restart the networks. If the sum of the SAR values of the power of the network frequency bands is within the range of the SAR standard value, the networks are restarted; if the sum of the SAR values exceeds the SAR standard value, whether the networks need to be restarted is judged according to the user requirement, and the power of the overlapped frequency bands of the networks and the wireless wide area network is reduced, so that the corresponding SAR value meets the standard.

Optionally, the working frequency of the satellite positioning such as the GPS and the beidou is 1.2GHz, 1.5GHz, 1.6GHz, and 2.4GHz, and the frequency points of the WLAN and the WAN are overlapped, there is no clear overlapping definition in the regulatory requirements, and based on the consideration of human health, the terminal manufacturer has the responsibility to handle the overlapping power consumption of this part. When the positioning function is started, the used application services, such as navigation, route planning and the like, are usually far away from the human body and can not be considered by SAR.

When the proximity sensor is used and a scene used by the head is detected, the GPS needs to be turned off or satellite scanning needs to be stopped, so that radiation damage to a human body is reduced. Based on the frequency band of the internet of things, if the frequency band is overlapped in the frequency band range of the WWAN, a processing method similar to the GPS positioning should be adopted.

Optionally, a personal area network such as bluetooth BT generally uses a low power BLE protocol stack or a dual stack with BLE on a smart phone. The bluetooth work is in 2.4GHz frequency channel, though there is the stack with wireless wide area network, but the bluetooth does not have high expectations to communication distance, does not suggest the power of dynamic adjustment wireless wide area network, can select for use lower bluetooth power group through predetermineeing different bluetooth power groups when the stack frequency channel uses, reduces the consumption.

After the application operation of the mobile terminal close to the head of the user is finished, the transmitting power of the antenna corresponding to the frequency band of the wireless network or the wireless wide area network recorded in the early stage is recovered after the mobile terminal is judged to be far away from the head of the user according to the output data of the sensor group, and the communication quality is improved. And under the condition of ensuring the communication quality safety, reinitializing the check on the changed power of the wireless access network or the wireless wide area network.

103. And judging that the wireless network is in a closed state, and increasing the transmitting power of the antenna corresponding to the overlapped frequency band.

For example, when at least one wireless network is in the off state, the transmitting power of the antenna corresponding to the frequency band where the wireless wide area network and the wireless network overlap is increased. The value of the boosting power does not exceed 0.5dBm generally, and the optimal boosting power, namely the normal transmitting power of the antenna corresponding to the frequency band, is increased by about 0.5 dBm. The wireless network is a wireless network with a large influence factor.

If the wireless network is in a closed state, namely only the wireless wide area network in the mobile terminal is available, the transmitting power of the antenna corresponding to the overlapped frequency band is properly increased so as to ensure the communication quality.

In order to better implement the above method, an embodiment of the present invention may further provide a device for adjusting an SAR value, where the device for adjusting an SAR value may be specifically integrated in a network device, and the network device may be a mobile terminal or the like.

For example, as shown in fig. 2, the apparatus for adjusting the SAR value may include a detection unit 201 and an adjustment unit 202, as follows:

(1) detection unit 201

The detecting unit 201 is configured to detect an overlapping frequency band of the wireless wide area network and at least one wireless network accessing the mobile terminal.

For example, when the smart phone is powered on, the smart phone must access the wireless wide area network of the operator, and other wireless networks accessing the mobile terminal are turned on or off according to the needs of the user. The detection unit 201 detects whether the radio access network is in an on or off state.

(2) Adjusting unit 202

An adjusting unit 202, configured to determine that the wireless network is in an on state, and reduce the transmitting power of the antenna corresponding to the overlapping frequency band; and judging that the wireless network is in a closed state, and increasing the transmitting power of the antenna corresponding to the overlapped frequency band.

For example, the wireless network is a wireless network with a large influence factor, and taking the WIFI network as an example, when the WIFI network is in an on state, the transmission power of the antenna corresponding to the frequency BAND where the wireless wide area network and the WIFI network overlap is reduced, that is, the transmission power of the antenna of the BAND1 in the LTE network is reduced. And when the WIFI network is in a closed state, increasing the transmitting power of the antenna corresponding to the frequency BAND of the wireless wide area network overlapped with the WIFI network, namely increasing the transmitting power of the antenna of BAND1 in the LTE network. The value of the reduced or increased power typically does not exceed 0.5 dBm. The above-mentioned WIFI network may be replaced by another wireless network, with the corresponding overlapping frequency band being changed.

The adjusting unit 202 further includes a determining unit and an adjusting subunit. The judging unit is used for judging that the mobile terminal is close to the head of a user and detecting the network type corresponding to the running application; the adjusting subunit is used for the wireless network to run the application and reducing the transmitting power of the antenna corresponding to the frequency band of the wireless wide area network; and the wireless wide area network operates the application and reduces the transmitting power of the antenna corresponding to the frequency band of the wireless network.

As shown in fig. 3, fig. 3 is a flowchart of a method for adjusting an SAR value according to an embodiment of the present invention. Referring to fig. 3, step 301 is executed, the mobile terminal is switched in to a wireless wide area network of an operator after being powered on, step 302 is executed, whether a WIFI network is turned on or not is detected, when the WIFI network is in an on state, step 302 is executed, the transmitting power of an antenna corresponding to a frequency band where the wireless wide area network and the WIFI network overlap is reduced to P1, and when the WIFI network is in an off state, step 304 is executed, and the transmitting power of an antenna corresponding to a frequency band where the wireless wide area network and the WIFI network overlap is increased to P2. Step 305 is executed to detect whether a head-approaching event of the terminal occurs, and when the head-approaching event of the terminal is detected, if a focus application is in operation, step 306 is executed to continue to judge the network type of the application in operation. If the application runs in the WIFI network, step 307 is executed, and the power of the frequency band corresponding to the wireless wide area network is reduced to P3; if the application is running in the wireless wide area network or the network type of the application cannot be determined to be running, step 308 is executed to preferentially reduce the power of the frequency band corresponding to the WIFI network to W1. After the transmitting power of the antenna corresponding to the frequency band of the wireless wide area network or the WIFI network is reduced, step 309 or step 310 is executed, whether the mobile terminal is started up with the GPS/BT is judged, if the GPS/BT is started up, step 311 or step 312 is executed, the GPS/BT is temporarily turned off, step 313 or step 314 is executed, after the application running of the mobile terminal close to the head of the user is finished, step 315 or step 316 is executed, whether the GPS/BT is turned on again is judged according to the recorded SAR value, and the sum of the SAR values is enabled not to exceed the SAR standard value. And after the mobile terminal is far away from the head of the user, executing step 317 or step 318, and recovering the reduced transmitting power of the antenna corresponding to the frequency band of the WIFI network or the wireless wide area network.

Accordingly, an embodiment of the present invention further provides a mobile terminal, as shown in fig. 4, the mobile terminal may include Radio Frequency (RF) circuit 401, a memory 402 including one or more computer-readable storage media, an input unit 403, a display unit 404, a sensor 405, an audio circuit 406, a wireless fidelity (WiFi) module 407, a processor 408 including one or more processing cores, and a power supply 409. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 4 is not intended to be limiting of mobile terminals and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. Wherein:

the RF circuit 401 may be used for receiving and transmitting signals during a message transmission or communication process, and in particular, for receiving downlink information of a base station and then sending the received downlink information to the one or more processors 408 for processing; in addition, data relating to uplink is transmitted to the base station. In general, the RF circuitry 401 includes, but is not limited to, an antenna, at least one Amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM) card, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuitry 401 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Message Service (SMS), and the like.

The memory 402 may be used to store software programs and modules, and the processor 408 executes various functional applications and data processing by operating the software programs and modules stored in the memory 402. The memory 402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; 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 402 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. Accordingly, the memory 402 may also include a memory controller to provide the processor 408 and the input unit 403 access to the memory 402.

The input unit 403 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, in a particular embodiment, the input unit 403 may include a touch-sensitive surface as well as other input devices. The touch-sensitive surface, also referred to as a touch display screen or a touch pad, may collect touch operations by a user (e.g., operations by a user on or near the touch-sensitive surface using a finger, a stylus, or any other suitable object or attachment) thereon or nearby, and drive the corresponding connection device according to a predetermined program. Alternatively, the touch sensitive surface may comprise two parts, a touch detection means and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts it to touch point coordinates, and sends the touch point coordinates to the processor 408, and can receive and execute commands from the processor 408. In addition, touch sensitive surfaces may be implemented using various types of resistive, capacitive, infrared, and surface acoustic waves. The input unit 403 may include other input devices in addition to the touch-sensitive surface. In particular, other input devices may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 404 may be used to display information input by or provided to the user and various graphical user interfaces of the mobile terminal, which may be made up of graphics, text, icons, video, and any combination thereof. The display unit 604 may include a display panel, and optionally, the display panel may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch-sensitive surface may overlay the display panel, and when a touch operation is detected on or near the touch-sensitive surface, the touch operation is transmitted to the processor 608 to determine the type of touch event, and the processor 408 provides a corresponding visual output on the display panel according to the type of touch event. Although in FIG. 4 the touch-sensitive surface and the display panel are shown as two separate components to implement input and output functions, in some embodiments the touch-sensitive surface may be integrated with the display panel to implement input and output functions.

The mobile terminal may also include at least one sensor 405, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel according to the brightness of ambient light, and a proximity sensor that may turn off the display panel and/or the backlight when the mobile terminal is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the mobile phone is stationary, and can be used for applications of recognizing the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile terminal, further description is omitted here. In the embodiment of the invention, the mobile terminal comprises a sensor group, the sensor group comprises a light sensor, a heat-sensitive sensor, a proximity sensor and a gravity sensor, and whether the mobile terminal is close to the head of a user is judged according to output data of the sensor group.

Audio circuitry 406, a speaker, and a microphone may provide an audio interface between the user and the mobile terminal. The audio circuit 406 may transmit the electrical signal converted from the received audio data to a speaker, and convert the electrical signal into a sound signal for output; on the other hand, the microphone converts the collected sound signal into an electric signal, which is received by the audio circuit 406 and converted into audio data, which is then processed by the audio data output processor 408, and then transmitted to, for example, another mobile terminal via the RF circuit 401, or the audio data is output to the memory 402 for further processing. The audio circuitry 406 may also include an earbud jack to provide communication of a peripheral headset with the mobile terminal.

WiFi belongs to short distance wireless transmission technology, and the mobile terminal can help the user to send and receive e-mail, browse web page and access streaming media etc. through WiFi module 407, it provides wireless broadband internet access for the user. Although fig. 4 shows the WiFi module 407, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 408 is a control center of the mobile terminal, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 402 and calling data stored in the memory 402, thereby integrally monitoring the mobile phone. Optionally, processor 408 may include one or more processing cores; preferably, the processor 408 may integrate an application processor, which handles primarily the operating system, user interface, applications, etc., and a modem processor, which handles primarily the wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 408.

The mobile terminal also includes a power supply 409 (e.g., a battery) for powering the various components, which may preferably be logically coupled to the processor 408 via a power management system that may be configured to manage charging, discharging, and power consumption. The power supply 409 may also include any component of one or more dc or ac power sources, recharging systems, power failure detection circuitry, power converters or inverters, power status indicators, and the like.

Although not shown, the mobile terminal may further include a camera, a bluetooth module, and the like, which will not be described herein. Specifically, in this embodiment, the processor 408 in the mobile terminal loads the executable file corresponding to the process of one or more application programs into the memory 402 according to the following instructions, and the processor 408 runs the application programs stored in the memory 402, thereby implementing various functions.

The method, the apparatus and the mobile terminal for adjusting an SAR value provided by the embodiment of the present invention are described in detail above, a specific example is applied in the present disclosure to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A method of adjusting SAR values, comprising:

detecting the overlapping frequency band of the wireless access network and at least one wireless network accessed to the mobile terminal;

judging that the wireless access network is in an open state, and reducing the transmitting power of the antenna corresponding to the overlapped frequency band;

and judging that the wireless access network is in a closed state, and increasing the transmitting power of the antenna corresponding to the overlapped frequency band.

2. The method of adjusting SAR value of claim 1, wherein said detecting overlapping frequency bands of the radio access network and at least one radio network accessing the mobile terminal comprises:

3. The method of claim 1, wherein the determining that the wireless network is in an on state and reducing the transmission power of the antenna corresponding to the overlapping frequency band comprises:

the wireless access network operates the application and reduces the transmitting power of the antenna corresponding to the frequency band of the wireless wide area network;

and the wireless wide area network operates the application to reduce the transmitting power of the antenna corresponding to the frequency band of the wireless access network.

4. The method of claim 2, wherein the determining that the wireless network is in an on state and reducing the transmission power of the antenna corresponding to the overlapping frequency band comprises:

5. The method of adjusting SAR value of claim 3, wherein said determining that said mobile terminal is near the head of the user comprises:

6. The method of adjusting the SAR value of claim 3, comprising:

7. An apparatus for adjusting a SAR value, comprising:

8. The apparatus for adjusting SAR value according to claim 7, wherein the adjusting unit comprises:

9. A mobile terminal comprising a memory and a processor; the memory stores an application program, and the processor is configured to execute the application program in the memory to perform the operations of the method for adjusting the SAR value of any of claims 1 to 6.

10. The mobile terminal according to claim 9, characterized by comprising means for adjusting SAR values according to any of claims 7 to 8.