WO2024001443A1

WO2024001443A1 - Transmission power limiting method and device

Info

Publication number: WO2024001443A1
Application number: PCT/CN2023/089071
Authority: WO
Inventors: 魏珍荣
Original assignee: 荣耀终端有限公司
Priority date: 2022-07-01
Filing date: 2023-04-18
Publication date: 2024-01-04
Also published as: CN117377049A

Abstract

The present application provides a transmission power limiting method and a device, is applied to the field of communications, and can solve the problem that the optimal communication quality cannot be achieved in all areas due to the fact that transmission power of a mobile terminal is limited by using the lowest SAR standard in a unified manner. The method is applied to a mobile terminal. A first preset configuration file comprising a plurality of area identifiers and limited transmission powers corresponding to the area identifiers are stored in an application processor of the mobile terminal. The method comprises: a modem of a mobile terminal obtains a first limited transmission power of a network for the mobile terminal; an application processor obtains an area identifier of the mobile terminal, reads, from a first preset configuration file, a second limited transmission power corresponding to the area identifier, and sends the second limited transmission power to the modem; the modem sets the second limited transmission power as a transmission power parameter, selects the minimum value from the first limited transmission power and the transmission power parameter as the maximum transmission power, and limits the transmission power of the mobile terminal according to the maximum transmission power.

Description

Transmission power limiting method and equipment

This application claims priority to the Chinese patent application submitted to the State Intellectual Property Office on July 1, 2022, with the application number 202210774784.8 and the invention title "Transmission Power Limiting Method and Equipment", the entire content of which is incorporated into this application by reference. .

Technical field

The present application relates to the field of communication technology, and in particular, to a transmission power limiting method and device.

Background technique

Specific Absorption Ratio (SAR) refers to the electromagnetic radiation energy absorbed by a unit mass of material per unit time. Different communication frequency bands in different areas have different certification standards for the SAR value of mobile terminals. Mobile terminals can only enter the area for normal use after adjusting their own radiation to adapt to the SAR certification standards of the corresponding area.

Generally, the communication quality of mobile terminals is related to the transmission power, and higher transmission power can ensure better communication quality. The higher the transmitting power of the mobile terminal, the greater the radiation generated. Therefore, in order to make the radiation of the mobile terminal meet the SAR certification standards of the region where it is located, the transmission power of the mobile terminal needs to be limited.

Since the SAR standards used in different regions are different, if a unified transmission power limit is used for mobile terminals in different regions, in order to meet the SAR standards of all regions, the lowest SAR standard in all regions needs to be used to limit the transmission power of the mobile terminal. In this way, the mobile terminal cannot achieve the best communication quality in areas with higher SAR standards.

Contents of the invention

Embodiments of the present application provide a transmission power limiting method and device to solve the problem of uniformly using the lowest SAR standard in all areas to limit the transmission power of mobile terminals. The mobile terminal cannot achieve the best in areas with higher SAR standards. Communication quality.

In a first aspect, this application provides a transmission power limiting method, which is applied to a mobile terminal. The mobile terminal includes an application processor and a modem, and the modem is coupled to the application processor; a first preset configuration file is stored in the application processor, and the first preset configuration file is stored in the application processor. The preset configuration file includes multiple regional identifiers and the limited transmission power corresponding to each regional identifier. Wherein, the limited transmission power corresponding to each area identifier in the first preset configuration file may refer to the SAR standard setting specified in the area corresponding to the area identifier. The method includes:

After the mobile terminal is powered on, the modem obtains the first limited transmission power of the network for the mobile terminal. At the same time, after the mobile terminal is turned on, the application processor can obtain the area identification of the mobile terminal, and read the second limited transmission power corresponding to the area identification of the mobile terminal from the first preset configuration file; then the application processor will Limits the transmit power sent to the modem. After the modem receives the second limited transmit power, it sets the second limited transmit power as the transmit power parameter of the modem; then, the modem uses the first limited transmit power and the second limited transmit power in the transmit power parameter as a transmit power set, from Among them, the smallest restricted transmit power is selected as the maximum transmit power of the mobile terminal. Finally, the modem limits the mobile terminal's transmit power according to the maximum transmit power.

In the above technical solution, the mobile terminal will use the SAR of the area it belongs to according to the area identification of the mobile terminal. The standard dynamically adjusts the transmit power parameters in the mobile terminal. In this way, when the mobile terminal is used in different areas, the transmission power of the mobile terminal can be limited with reference to the maximum transmission power required by the SAR standard in the corresponding area. At the same time, combined with the transmission power limit of the network, it is ensured that the transmission power when the mobile terminal is used can meet the network's requirements for the mobile terminal's transmission power. In this way, the mobile terminal can maximize the maximum transmit power of the mobile terminal and ensure better communication quality of the mobile terminal on the premise of meeting the SAR standards and network requirements of the area where it is located.

In a possible implementation of the first aspect, the method further includes: the modem searches the network after the mobile terminal is turned on, and obtains the area identifier of the area to which the network belongs. The modem sends the zone identification of the zone to which the network belongs to the application processor. That is, the application processor obtains the area identification of the mobile terminal, which specifically includes: the application processor receives the area identification of the area to which the network belongs from the modem, and the application processor uses the area identification of the area to which the network belongs as the area identification of the mobile terminal. In this way, the maximum transmit power of the mobile terminal can be increased on the premise of meeting the SAR standard specified in the area where the mobile terminal is located and the transmit power limit of the network, thereby improving the communication quality of the mobile terminal.

In a possible implementation of the first aspect, the area identifier of the area to which the network belongs is the mobile country code MCC and/or the public land mobile network PLMN of the area to which the network belongs.

In a possible implementation of the first aspect, the application processor obtaining the region identification of the mobile terminal includes: the application processor reading the system software identification of the mobile terminal after the mobile terminal is powered on. The system software identification is used to indicate the region where the mobile terminal's supplier belongs or the operator version information of the mobile terminal, and the region identification of the mobile terminal is the region identification of the region where the mobile terminal's supplier belongs or the operator version information of the mobile terminal. In this way, the maximum transmit power of the mobile terminal can be increased, thereby improving the communication quality of the mobile terminal, on the premise of satisfying the SAR standard specified in the area corresponding to the mobile terminal's own regional identifier and the transmit power limit of the network in the area.

In a possible implementation of the first aspect, a user identification SIM card is installed in the mobile terminal. Wherein, the application processor obtains the area identification of the mobile terminal, including: the application processor reads the area identification of the area to which the SIM card belongs. In this embodiment, the area identifier of the area to which the SIM card belongs is used as the area identifier of the mobile terminal. In this way, the maximum transmission power of the mobile terminal can be increased, thereby improving the communication quality of the mobile terminal, on the premise of meeting the SAR standard specified in the corresponding area of the mobile terminal's SIM card and the transmission power limit of the network in the area.

In a possible implementation of the first aspect, a SIM card is installed in the mobile terminal; the first preset configuration file also includes the specific absorption rate SAR gear corresponding to each area identifier. In this embodiment, before the modem selects the smallest restricted transmit power from the transmit power set as the maximum transmit power of the mobile terminal, the method further includes: the application processor obtains the area identifier of the area to which the SIM card belongs; the application processor obtains the area identifier of the area to which the SIM card belongs; The target SAR gear level corresponding to the area identifier of the area to which the SIM card belongs is read from the first preset configuration file, and the target SAR gear level is sent to the modem; the modem receives and analyzes the target SAR gear level to obtain the third limited transmission power. In this embodiment, the modem uses the first limited transmission power, the third limited transmission power, and the second limited transmission power in the transmission power parameters as a transmission power set. In this way, it can be further ensured that the actual SAR value corresponding to the mobile terminal's transmit power meets the SAR standard specified in the area where the mobile terminal is located.

In a possible implementation of the first aspect, the modem limits the transmission power of the mobile terminal according to the transmission power parameter, including: the modem limits the transmission power of the mobile terminal in the preset signal according to the transmission power parameter; wherein the preset signal includes the following At least one item: the signal of the physical random access channel of the mobile terminal, the signal of the physical uplink control channel, the signal of the physical uplink shared channel, and the channel sounding reference signal. so, It can be ensured that the actual SAR value of the mobile terminal when used meets the SAR standard specified in the area where the mobile terminal is located.

In a second aspect, this application also provides a transmission power limiting method, which is applied to a mobile terminal. The mobile terminal includes an application processor and a modem, and the application processor is coupled to the modem; a second preset configuration file is stored in the modem, and the second preset configuration file is stored in the modem. The preset configuration file includes multiple regional identifiers and the limited transmission power corresponding to each regional identifier. Wherein, the limited transmission power corresponding to each area identifier in the second preset configuration file may refer to the SAR standard setting specified in the area corresponding to the area identifier. Methods include:

After the mobile terminal is powered on, the modem obtains the fourth transmission power limit imposed by the network on the mobile terminal. The modem obtains the area identification of the mobile terminal and reads the fifth limited transmission power corresponding to the area identification of the mobile terminal from the second preset configuration file. The modem uses the fourth transmission power and the fifth transmission power as a transmission power set, and limits the minimum transmission power among them to the maximum transmission power of the mobile terminal. The modem then limits the mobile terminal's transmit power according to the maximum transmit power.

In this way, when the mobile terminal is used in different areas, the transmission power of the mobile terminal can be limited by referring to the maximum transmission power required by the SAR standard in the corresponding area. At the same time, combined with the transmission power limit of the network, it is ensured that the transmission power when the mobile terminal is used can meet the network's requirements for the mobile terminal's transmission power. In this way, the mobile terminal can maximize the maximum transmit power of the mobile terminal and ensure better communication quality of the mobile terminal on the premise of meeting the SAR standards and network requirements of the area where it is located.

In a possible implementation of the second aspect, the modem may specifically obtain the area identifier of the mobile terminal by: after the mobile terminal is powered on, the modem searches the network and obtains the area identifier of the area to which the network belongs. Further, the modem uses the area identification of the area to which the network belongs as the area identification of the mobile terminal. In this way, the maximum transmit power of the mobile terminal can be increased, thereby improving the communication quality of the mobile terminal, on the premise of meeting the SAR standard specified in the area corresponding to the mobile terminal's regional identifier and the transmit power limit of the regional network.

In a possible implementation of the second aspect, the method further includes: after the mobile terminal is powered on, the application processor reads the system software identification of the mobile terminal and sends the system software identification to the modem. The system software identification is used to indicate the region to which the supplier of the mobile terminal belongs or the operator version information of the mobile terminal. In this embodiment, the modem uses the system software identification as the area identification of the mobile terminal. In this way, the maximum transmit power of the mobile terminal can be increased on the premise of meeting the SAR standard specified in the area corresponding to the area identifier of the mobile terminal itself, thereby improving the communication quality of the mobile terminal.

In a third aspect, this application also provides a transmission power limiting method, which method is applied to a mobile terminal. The mobile terminal includes an application processor and a modem. The application processor is coupled to the modem. A SIM card is installed in the mobile terminal; in the application processor A third default configuration file is stored, and the third default configuration file includes the SAR gear level corresponding to each regional identifier. The method includes:

After the mobile terminal is powered on, the application processor obtains the area identifier of the area to which the SIM card belongs; where the area identifier of the area to which the SIM card belongs includes the MCC and/or PLMN to which the SIM card belongs. The application processor reads the target SAR gear level corresponding to the area identifier of the area to which the SIM card belongs from the third preset configuration file, and sends the target SAR gear level to the modem. The modem receives and analyzes the target SAR level and obtains the sixth limit transmit power. In addition, the modem obtains the seventh restricted transmit power of the mobile terminal from the network; the modem uses the sixth transmit power and the seventh transmit power as a transmit power set, and selects the smallest restricted transmit power in the transmit power set as the maximum transmit power of the mobile terminal. The modem then limits the mobile terminal's transmit power according to the maximum transmit power.

In the above technical solution, when the mobile terminal is used in different areas, the transmission power of the mobile terminal can be limited by referring to the maximum transmission power of the SAR standard of the area to which the SIM card belongs. At the same time, combined with the transmission power limit of the network, it is ensured that the transmission power when the mobile terminal is used can meet the network's requirements for the mobile terminal's transmission power. In this way, the mobile terminal can maximize the maximum transmit power of the mobile terminal and ensure better communication quality of the mobile terminal on the premise of meeting the SAR standards and network requirements of the area where it is located.

In a fourth aspect, a mobile terminal is provided, including: a processor and a memory. The processor includes an application processor and a modem; the application processor is coupled to the modem; the memory is used to store computer execution instructions. When the mobile terminal runs When the processor executes the computer execution instructions stored in the memory, the mobile terminal executes the work task reminder method in any one of the above first aspects.

In a fifth aspect, a computer-readable storage medium is provided. Instructions are stored in the computer-readable storage medium. When run on a mobile terminal, the mobile terminal can perform any one of the tasks of the first aspect. Reminder method.

A sixth aspect provides a computer program product containing instructions that, when run on a mobile terminal, enables the mobile terminal to execute any one of the work task reminder methods of the first aspect.

Among them, the technical effects brought by any one of the design methods in the second to sixth aspects can be found in the technical effects brought by different design methods in the first aspect, and will not be described again here.

Description of drawings

Figure 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of a mobile terminal provided by an embodiment of the present application;

Figure 3 is a flow chart of a transmission power limiting method provided by an embodiment of the present application;

Figure 4A is a flow chart of another transmission power limiting method provided by an embodiment of the present application;

Figure 4B is a flow chart of another transmission power limiting method provided by an embodiment of the present application;

Figure 4C is a flow chart of another transmission power limiting method provided by an embodiment of the present application;

Figure 5 is a flow chart of another transmission power limiting method provided by an embodiment of the present application;

Figure 6 is a flow chart of another transmission power limiting method provided by an embodiment of the present application;

Figure 7A is a flow chart of another transmission power limiting method provided by an embodiment of the present application;

Figure 7B is a flow chart of another transmission power limiting method provided by an embodiment of the present application;

Figure 8 is a flow chart of another transmission power limiting method provided by an embodiment of the present application.

Detailed ways

In order to pursue better communication quality of mobile terminals, the transmission power of mobile terminals is usually increased. However, the transmit power of mobile terminals is limited by the regulatory requirements of the region where they are located. Nowadays, the transmit power of mobile terminals is usually limited according to SAR.

SAR refers to the electromagnetic radiation energy absorbed by a unit mass of material per unit time. The SAR standards used in different areas are different, that is, mobile terminals have different restrictions on transmit power when used in different areas. If a unified transmit power threshold is used to limit the transmit power of mobile terminals, in order to meet the SAR standards in all regions, the lowest SAR standard in all regions needs to be used to limit the transmit power of mobile terminals. In this way, although the mobile terminal can meet the SAR standards of each area, it may not be able to achieve the best communication quality in some areas with higher SAR standards.

To this end, this application proposes a transmission power limitation method to solve the problem of uniformly using the lowest power in all areas. The SAR standard is used to limit the transmit power of mobile terminals. The mobile terminal cannot achieve the best communication quality in areas with higher SAR standards.

The transmission power limiting method is applied to a mobile terminal by configuring multiple area identifiers and the limited transmission power corresponding to each area identifier in a preset configuration file (such as a first preset configuration file) of the mobile terminal. In this way, after the mobile terminal is turned on, the area identification of the mobile terminal can be obtained; then the limited transmission power (second limited transmission power) corresponding to the area identification of the mobile terminal is read from the first preset configuration file, and the The second limit is the transmit power parameter of the modem. Afterwards, the mobile terminal can compare the second limited transmission power in the transmission power parameter with the limited transmission power of the mobile terminal obtained by the network from the mobile terminal, and select the minimum value as the maximum transmission power of the mobile terminal. Finally, the mobile terminal's transmission power is limited according to the maximum transmission power. Among them, the limited transmission power corresponding to each area identifier in the first preset configuration file can be set according to the SAR standard specified in each area.

In the transmission power limitation method provided by the embodiment of the present application, the mobile terminal will dynamically adjust the transmission power parameters in the mobile terminal based on the SAR standard of the region according to the mobile terminal's regional identifier. In this way, when the mobile terminal is used in different areas, the transmission power of the mobile terminal can be limited with reference to the maximum transmission power required by the SAR standard in the corresponding area. At the same time, combined with the transmission power limit of the network, it is ensured that the transmission power when the mobile terminal is used can meet the network's requirements for the mobile terminal's transmission power. In this way, the mobile terminal can maximize the maximum transmit power of the mobile terminal and ensure better communication quality of the mobile terminal on the premise of meeting the SAR standards and network requirements of the area where it is located.

The above transmission power limiting method is applied to mobile terminals. For example, the above mobile terminal may be a mobile phone. Figure 1 shows a schematic structural diagram of a communication system provided by an embodiment of the present application. The mobile phone 1 shown in Figure 1 is the above-mentioned mobile terminal. When mobile phone 1 searches for and registers the network, mobile phone 1 interacts with base station 2 in the area where the mobile terminal is located.

In some embodiments, FIG. 2 is a schematic structural diagram of a mobile terminal 200. As shown in Figure 2, the mobile terminal 200 may include a processor 210, a memory 220, a universal serial bus (USB) interface 230, a charging management module 240, a battery 241, an antenna 1, an antenna 2, and a mobile communication module. 250, wireless communication module 260, audio module 270, sensor module 280, display screen 290, and subscriber identification module (subscriber identification module, SIM) card interface 291, etc.

For example, the mobile terminal may be the mobile phone 1 shown in Figure 1 . It can be understood that the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the mobile terminal 200. In other embodiments of the present application, the mobile terminal 200 may include more or fewer components than shown in the figures, or combine some components, or split some components, or arrange different components. The components illustrated may be implemented in hardware, software, or a combination of software and hardware.

The processor 210 may include one or more processing units. For example, the processor 210 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (GPU), and an image signal processor. (image signal processor, ISP), controller, memory, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (NPU) wait. Among them, different processing units can be independent devices or integrated in one or more processors. For example, in this embodiment of the present application, the processor 210 may be an application processor AP.

The controller may be the nerve center and command center of the mobile terminal 200 . The controller can follow instructions Operation codes and timing signals generate operation control signals to complete the control of instruction fetching and execution.

The processor 210 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in processor 210 is cache memory. This memory may hold instructions or data that have been recently used or recycled by processor 210 . If the processor 210 needs to use the instruction or data again, it can be called directly from the memory. Repeated access is avoided and the waiting time of the processor 210 is reduced, thus improving the efficiency of the system.

In some embodiments, processor 210 may include one or more interfaces. Interfaces may include integrated circuit (inter-integrated circuit, I2C) interface, integrated circuit built-in audio (inter-integrated circuit sound, I2S) interface, pulse code modulation (pulse code modulation, PCM) interface, universal asynchronous receiver and transmitter (universal asynchronous receiver/transmitter (UART) interface, mobile industry processor interface (MIPI), general-purpose input/output (GPIO) interface, subscriber identity module (SIM) interface, and /or USB interface, etc.

The USB interface 230 is an interface that complies with the USB standard specification, and may be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc. The USB interface 230 can be used to connect a charger to charge the mobile terminal 200, and can also be used to transmit data between the mobile terminal 200 and peripheral devices. It can also be used to connect headphones to play audio through them. This interface can also be used to connect other electronic devices or mobile terminals, such as AR devices.

It can be understood that the interface connection relationships between the modules illustrated in the embodiment of the present invention are only schematic illustrations and do not constitute a structural limitation on the mobile terminal 200 . In other embodiments of the present application, the mobile terminal 200 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

The charge management module 240 is used to receive charging input from the charger. Among them, the charger can be a wireless charger or a wired charger. In some embodiments, the mobile terminal 200 may support wired charging. Specifically, the charging management module 240 can receive the charging input of the wired charger through the USB interface 230 . In other embodiments, the mobile terminal 200 may support wireless charging.

The charging management module 240 can also provide power to the mobile terminal 200 while charging the battery 241 . The charging management module 240 receives input from the battery 241 and supplies power to the processor 210, the memory 220, the display screen 290, the wireless communication module 260, and the like. The charging management module 240 can also be used to monitor the battery capacity of the battery 241, the number of battery cycles, battery health status (leakage, impedance) and other parameters. In some other embodiments, the charging management module 240 may also be provided in the processor 210 .

The wireless communication function of the mobile terminal 200 can be implemented through the antenna 1, the antenna 2, the mobile communication module 250, the wireless communication module 260, the modem processor and the baseband processor.

Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in mobile terminal 200 may be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example: Antenna 1 can be reused as a diversity antenna for a wireless LAN. In other embodiments, antennas may be used in conjunction with tuning switches.

The mobile communication module 250 can provide wireless communication solutions including 2G/3G/4G/5G applied on the mobile terminal 200. The mobile communication module 250 may include at least one filter, switch, power amplifier, low noise amplifier (LNA), etc. The mobile communication module 250 can receive electromagnetic waves from the antenna 1, perform filtering, amplification and other processing on the received electromagnetic waves, and transmit them to the modem processor for demodulation. The mobile communication module 250 can also amplify the signal modulated by the modem processor and convert it into electromagnetic waves through the antenna 1 for radiation. In some embodiments, at least part of the functional modules of the mobile communication module 250 may be configured on the processor. 210 in. In some embodiments, at least part of the functional modules of the mobile communication module 250 and at least part of the modules of the processor 210 may be provided in the same device.

A modem processor may include a modulator and a demodulator. Among them, the modulator is used to modulate the low-frequency baseband signal to be sent into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After the low-frequency baseband signal is processed by the baseband processor, it is passed to the application processor. The application processor outputs sound signals through the audio device, or displays images or videos through the display screen 290 . In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be independent of the processor 210 and may be provided in the same device as the mobile communication module 250 or other functional modules. In some embodiments, the modem processor is also used to limit the mobile terminal's transmit power according to the mobile terminal's maximum transmit power; specifically, the modem processor controls the antenna 1 to transmit according to the mobile terminal's maximum transmit power. The modem processor is the modem in the embodiment of the present application.

The wireless communication module 260 can provide applications on the mobile terminal 200 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) network), Bluetooth (bluetooth, BT), and global navigation satellites. Wireless communication solutions such as global navigation satellite system (GNSS), frequency modulation (FM), NFC, infrared technology (infrared, IR), etc. In some embodiments, the antenna 1 of the mobile terminal 200 is coupled to the mobile communication module 250, and the antenna 2 is coupled to the wireless communication module 260, so that the mobile terminal 200 can communicate with the network and other devices through wireless communication technology.

The mobile terminal 200 implements the display function through the GPU, the display screen 290, and the application processor. The GPU is an image processing microprocessor and is connected to the display screen 290 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering. Processor 210 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 290 is used to display images, videos, etc. Display 290 includes a display panel. In some embodiments, the mobile terminal 200 may include 1 or N display screens 290, where N is a positive integer greater than 1.

The mobile terminal 200 can implement the shooting function through the ISP, camera 293, video codec, GPU, display screen 290 and application processor. The ISP is used to process the data fed back by the camera 293. In some embodiments, the ISP may be provided in the camera 293. Camera 293 is used to capture still images or video. In some embodiments, the mobile terminal 200 may include 1 or N cameras 293, where N is a positive integer greater than 1.

Memory 220 may be used to store computer executable program code, which includes instructions. The processor 210 executes instructions stored in the memory 220 to execute various functional applications and data processing of the mobile terminal 200 . In addition, the memory 220 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc.

The mobile terminal 200 can implement audio functions through the audio module 270, an application processor, and the like. Such as music playback, recording, etc. The audio module 270 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. In some embodiments, the audio module 270 may be provided in the processor 210 , or some functional modules of the audio module 270 may be provided in the processor 210 .

The SIM card interface 291 is used to connect a SIM card. The SIM card can be connected to or separated from the mobile terminal 200 by inserting it into the SIM card interface 291 or pulling it out from the SIM card interface 291 . The mobile terminal 200 can support 1 or N SIM card interfaces, N is a positive integer greater than 1. The SIM card interface 291 can support Nano SIM card, Micro SIM card, SIM card, etc. In some embodiments, the mobile terminal 200 adopts eSIM, that is, an embedded SIM card. The eSIM card can be embedded in the mobile terminal 200 and cannot be separated from the mobile terminal 200 .

The methods in the following embodiments can be implemented in a mobile terminal with the above hardware structure.

The transmission power limitation method proposed in this application can be applied to mobile terminals. In this embodiment of the present application, the mobile terminal specifically includes an application processor and a modem, and the application processor and the modem are coupled. Wherein, a first preset configuration file is stored in the application processor, and the first preset configuration file includes a plurality of area identifiers and a limited transmission power corresponding to each area identifier.

Among them, the limited transmission power corresponding to each area identifier in the first preset configuration file can be specifically set with reference to the SAR standard setting specified in the corresponding area of each area identifier. In the first preset configuration file, when the mobile terminal uses the limited transmission power corresponding to any area identifier as the maximum transmission power, the actual SAR value of the mobile terminal meets the SAR standard specified in the area corresponding to the area identifier.

Wherein, after the mobile terminal is powered on, the modem obtains the first limited transmission power of the network for the mobile terminal. The application processor obtains the area identification of the mobile terminal, and then reads the second limited transmission power corresponding to the area identification of the mobile terminal from the first preset configuration file. The application processor sends the second limited transmit power to the modem. After receiving the second limited transmission power, the modem sets the second limited transmission power as the transmission power parameter. Then, the modem uses the first limited transmission power and the transmission power parameter as the transmission power set, and selects the minimum value in the transmission power set as the maximum transmission power of the mobile terminal. Finally, the modem limits the mobile terminal's transmit power according to the maximum transmit power.

In this way, since the limited transmit power corresponding to each regional identifier is set with reference to the SAR standard specified in the corresponding area of the regional identifier, that is, the above technical solution dynamically adjusts the transmit power in the mobile terminal based on the regional identifier of the mobile terminal and based on the SAR standard of the corresponding area. parameter. In this way, when the mobile terminal is used in different areas, the transmission power of the mobile terminal can be limited with reference to the maximum transmission power required by the SAR standard in the corresponding area. At the same time, combined with the transmission power limit of the network, it is ensured that the transmission power when the mobile terminal is used can meet the network's requirements for the mobile terminal's transmission power. In this way, the mobile terminal can maximize the maximum transmit power of the mobile terminal and ensure better communication quality of the mobile terminal on the premise of meeting the SAR standards and network requirements of the area where it is located.

The technical terms that may be involved in the embodiments of this application are described below.

The application processor (application process, AP) is the part of the mobile terminal that does not include communication with the base station. The operating system, user interface and application programs are all executed on the AP.

Modem, including Modulator (modulator) and Demodulator (demodulator). A modem translates a computer's digital signals into analog signals that can be sent along an ordinary telephone line. These analog signals can then be received by another modem at the other end of the line and translated into a language that the computer can understand.

Mobile Country Code (MCC), MCC resources are uniformly allocated and managed by the International Telecommunication Union (ITU), and uniquely identify the country to which a mobile user belongs.

In a certain country or region, a certain standard of cellular mobile communication network of a certain operator is called a Public Land Mobile Network (Public Land Mobile Network, PLMN). PLMN is a network established and operated by the government or its approved operators to provide land mobile communication services to the public.

Subscriber identification card, also called SIM card, is an IC card held by mobile users of the Global System for Mobile Communications (GSM) system. GSM system identifies through SIM card GSM users. GSM mobile terminals can only be used on the network after inserting a SIM card.

The SAR gear indicates the SAR standards specified for different areas and the SAR set for each area. For example, if the mobile terminal is expected to be used in M areas, a corresponding SAR value is set for each area identifier in the M areas according to the SAR standards specified in each of the M areas. The identifier of any one of the M areas mentioned above and its corresponding SAR value represent the SAR gear level of the corresponding area.

The transmit power parameter is one of the readable configuration parameters in the modem, which configures the maximum transmit power that the mobile terminal is allowed to use. The application processor can modify the transmit power parameters in the modem by calling the interface provided by the modem. In some embodiments, the transmit power parameter is also called radio frequency power NV (RF parameter stored in non-volatile memory).

Physical Random Access Channel, (Physical Random Access Channel, PRACH), is the access channel when the user terminal (User Equipmen, UE) initially initiates a call. The UE receives the Fast Physical Access Channel (Fast Physical Access Channel, FPACH) After the response message, the RRC Connection Request message will be sent on the PRACH channel according to the information indicated by Node B to establish the RRC connection. Among them, RRC (Radio Resource Control) is radio resource control.

The Physical Uplink Control Channel (PUCCH) is used to carry scheduling requests, Channel Quality Indicator (CQI) feedback, etc.

Physical Uplink Shared Channel (PUSCH) is used to carry data from the transmission channel. Sharing means that the same physical channel can be used by multiple users in a time-sharing manner, or that the channel has a short duration.

The channel sounding reference signal (Sounding Reference Signal, SRS) provides a reference for the scheduling of the evolved Node B (Evolved eNodeB, a base station), specifically for the uplink channel quality.

In some embodiments, as shown in Figure 3, the above-mentioned transmission power limiting method includes S300-S307. This method is explained by taking the application of this method to the mobile phone 1 shown in Figure 1 as an example, where:

S300. Mobile phone 1 is powered on.

S301. The modem of mobile phone 1 obtains the first limited transmission power of mobile phone 1 from the network.

After mobile phone 1 is turned on, it needs to search and register with the network before it can use the mobile services provided by the network, and the network has restrictions on the transmission power of mobile terminals using the network. Among them, the transmission power limited by the network to the mobile terminal may be related to the actual usage of the mobile terminal. Therefore, during the use of mobile phone 1, the restricted transmission power of mobile phone 1 obtained by the network at different times may be different. The modem of mobile phone 1 can obtain the first limited transmission power of mobile phone 1 from the network in real time. In some embodiments, the modem may specifically obtain the first limited transmission power of the network for the mobile phone 1 from the base station.

In some embodiments, the modem obtains the first limited transmission power of the mobile phone 1 from the network. Specifically, the modem may obtain the limited transmission power of the network mobile terminal issued by the base station during the process of searching the network. In other embodiments, the modem obtains the first limited transmission power of the mobile phone 1 from the network, or the mobile phone 1 obtains the limited transmission power of the network for the mobile terminal issued by the base station while using the mobile service provided by the network.

The first limited transmission power is the limited transmission power that mobile phone 1 must follow when using mobile services provided by the network. Therefore, when limiting the transmission power of mobile phone 1, it is necessary to combine the above-mentioned first limited transmission power with mobile phone 1. transmit power is limited.

S302. The application processor of mobile phone 1 obtains the region identification of mobile phone 1.

The area identifier of mobile phone 1 is used to indicate the area to which mobile phone 1 belongs. In some embodiments, the area to which mobile phone 1 belongs may be the area to which the network registered after mobile phone 1 is turned on, or the area indicated by the system software in mobile phone 1, or the area to which mobile phone 1 belongs may also be the area to which mobile phone 1 belongs. The region to which the installed SIM card belongs.

Among them, for example, the area to which mobile phone 1 belongs is the area to which the network registered after mobile phone 1 is turned on. The modem can search for the network after mobile phone 1 is turned on and obtain the regional identifier of the area to which the network belongs.

Please refer to Figure 4A. After S300, the above method also includes S401 and S402. in:

S401. The modem searches the network and obtains the area identifier of the area to which the network belongs.

After the mobile terminal is turned on, it needs to search and register the network. Only after the network registration is successful and the mobile terminal is attached to the mobile network, the mobile terminal can use the relevant mobile services provided by the network. In some embodiments, after the mobile phone 1 is turned on, the modem searches for the network and registers the network. Among them, the purpose of the modem searching for the network is to search for the network available for the SIM card installed on the mobile phone 1. After searching for a network where the SIM card is available, the modem can initiate a registration request to the network; the purpose of registering the network is to enable the SIM card to use the mobile services provided by the network.

It should be noted that the above-mentioned process of the modem searching for a network and registering a network after the mobile phone 1 is turned on can refer to the description in the related art, and will not be described again in the embodiment of the present application.

After the modem searches for and registers the network, it can interact with the base station of the registered network, and then obtain the area identifier of the area to which the network belongs from the base station of the network.

S402. The modem sends the area identifier of the area to which the network belongs to the application processor.

It can be known from the description of the above embodiments that the limited transmission power corresponding to multiple area identifiers is stored in the first preset configuration file stored in the application processor. After the modem obtains the area identifier of the area to which the network belongs, it sends the area identifier of the area to which the network belongs to the application processor, and then the application processor reads the restrictions corresponding to the area identifier of the area to which the network belongs from the first preset configuration file. Transmit power.

Further, in this embodiment, as shown in Figure 4A, S302 may specifically be S302a.

S302a. The application processor receives the area identification of the area to which the network of the modem belongs.

In this embodiment, the area identifier of mobile phone 1 is the area identifier of the area to which the network belongs. That is, the first preset configuration file includes the area identifier of the area to which each network belongs, and the limited transmission power corresponding to the area identifier of the area to which each network belongs.

In some embodiments, the area identifier of the area to which the network belongs is the MCC and/or PLMN of the area to which the network belongs. Since the SAR standards used in different areas are different, for the MCC and PLMN of a certain area, the limited transmission power that meets the SAR standard of the corresponding area can be set in the first preset configuration file in advance. After the application processor obtains the MCC and PLMN of the area to which the network belongs, it obtains the limited transmission power corresponding to the area identifier according to the first preset configuration file.

In the technical solution provided by the embodiment of the present application, the regional identifier of the network area obtained by the modem is used as the regional identifier of the mobile phone 1 and is used as one of the limiting factors of the transmission power of the mobile phone 1 . In this way, the maximum transmit power of mobile phone 1 can be increased on the premise of meeting the SAR standard specified in the area corresponding to the regional identification of mobile phone 1 and the transmission power limit of the regional network, thereby improving the communication quality of mobile phone 1.

When mobile phone manufacturers promote the use of mobile phones in different regions, in order to adapt the mobile phones to the requirements of the region for mobile phones, the usage habits of users in the region, etc., the mobile phones used in the region can adopt the same features as other mobile phones. Regional mobile phones have different system software versions. That is, mobile phones used in different regions use different system software versions. In this embodiment, taking the area to which the mobile phone 1 belongs is the area indicated by the system software version as an example, as shown in FIG. 4B , S302 of the above method may specifically be S302b.

S302b. The application processor reads the system software identification of mobile phone 1.

Among them, the system software identification of mobile phone 1 is used to distinguish different system software versions used by mobile phone 1 in different regions.

Cell phones within the same area are usually provided through the same cell phone provider. In some embodiments, the same system software version may be used in all mobile phones supplied by the same mobile phone provider. In this embodiment, the system software identification may be used to indicate the region to which the supplier of the mobile phone 1 belongs.

The same area can include one or more operators, and mobile phone manufacturers can cooperate with operators to launch operator-customized versions. In some embodiments, the same system software version can be used in mobile phones of the same operator version. In this embodiment, the system software identifier may be used to indicate the operator version information of the mobile phone 1 .

Among them, operators refer to suppliers that provide network services for mobile phone 1 and other terminals.

In other embodiments, the regional identifier of the region to which the supplier of mobile phone 1 belongs or the operator version information of mobile phone 1 can also be separately configured in mobile phone 1 . In this embodiment, the application processor obtains the regional identification information of the mobile phone 1. Specifically, the application processor directly obtains the regional identification of the supplier region of the mobile phone 1 or the operator version information of the mobile phone 1 as the regional identification of the mobile phone 1. .

It should be noted that in the embodiment shown in Figure 4B, the mobile phone 1 can execute S301 first and then S302b, or it can execute S302b first and then S301; or the mobile phone 1 can also execute S301 and S302b at the same time. In the embodiment of the present application, the order of S301 and S302b is not limited.

Among them, in the embodiment where the mobile phone 1 first executes S302b and then executes S301, the application processor can obtain the system software identification of the mobile phone 1 immediately after starting up, and can also obtain the information of the supplier region of the mobile phone 1 indicated by the system software identification. Region identification or operator version information, without waiting for the modem to search and register the network to complete. In this embodiment, before the modem search and registration network is completed, the mobile phone 1 can obtain the corresponding limited transmission power based on the regional identifier of the region where the mobile phone 1's supplier belongs or the operator version information. And the transmission power of the mobile phone 1 is limited according to the limited transmission power determined according to the system software identification. The specific method of limiting the transmission power of the mobile phone 1 may refer to the description in the following embodiments, and will not be described again here.

Since the system software identification of mobile phone 1 corresponds to the restricted transmission power, it usually meets the SAR standard specified in the region where the SIM card belongs. Therefore, the transmission power of mobile phone 1 can be limited to the required transmission power as soon as possible after mobile phone 1 is turned on, thereby reducing the possibility that the use of mobile phone 1 does not comply with the regional regulations of mobile phone 1, and ensuring that the use of mobile phone 1 complies with the area of mobile phone 1 Provisions.

In the technical solution provided by the embodiment of this application, the region to which the supplier of the mobile phone 1 belongs or the operator version information of the mobile phone 1 is used as the regional identifier of the mobile phone 1 as one of the limiting factors of the transmission power of the mobile phone 1 . In this way, the maximum transmit power of the mobile phone 1 can be increased on the premise of meeting the SAR standard specified in the area corresponding to the area identification of the mobile phone 1 itself, thereby improving the communication quality of the mobile phone 1 . In addition, there is no need to wait for the search and registration network to be completed, so that the transmission power of mobile phone 1 can meet the requirements of the corresponding area, which can reduce the possibility that the use of mobile phone 1 does not comply with the regional regulations of mobile phone 1 and ensure that the use of mobile phone 1 complies with the regional regulations of mobile phone 1. Regulation.

Taking the area to which the mobile phone 1 belongs is the area to which the SIM card installed in the mobile phone 1 belongs, for example, as shown in Figure 4C, the above-mentioned S302 may specifically be S302c.

S302c. The application processor reads the area identification of the area to which the SIM card belongs.

Among them, the area identifier of mobile phone 1 is the area identifier of the area to which the SIM card belongs. Different regions use different operators and different SIM cards. That is, the SIM card used by mobile phone 1 is also associated with the region. In this embodiment, after the mobile phone 1 is turned on, the application processor can obtain the regional identifier of the area to which the SIM card installed in the mobile phone 1 belongs, and use the regional identifier of the area to which the SIM card belongs as the regional identifier of the mobile phone 1 . The specific process for the application processor to obtain the area identifier of the area to which the SIM card belongs can be referred to the introduction in related technologies, and will not be described again in the embodiment of this application.

In some embodiments, the area identifier of the area to which the SIM card belongs may specifically be the MCC and/or PLMN to which the SIM card belongs.

It should be noted that in the embodiment shown in FIG. 4C , the mobile phone 1 can execute S301 first and then S302c, or it can execute S302c first and then S301; or it can also execute S301 and S302c at the same time. In the embodiment of the present application, the order of S301 and S302c is not limited.

In the embodiment where the mobile phone 1 first executes S302c and then executes S301, the application processor can obtain the area identifier of the area to which the SIM card belongs immediately after powering on, without waiting for the modem to search and register the network. In this embodiment, before the modem search and registration network is completed, the mobile phone 1 can limit the transmission power of the mobile phone 1 according to the limited transmission power corresponding to the regional identifier of the area to which the SIM card belongs. Due to the limited transmit power corresponding to the regional identification of the area where the SIM card belongs, it usually meets the SAR standard specified by the area where the SIM card belongs. Therefore, the transmission power of mobile phone 1 can be limited to the required transmission power as soon as possible after mobile phone 1 is turned on, thereby reducing the possibility that the use of mobile phone 1 does not comply with the regional regulations of mobile phone 1, and ensuring that the use of mobile phone 1 complies with the area of mobile phone 1 Provisions.

In the technical solution provided by the embodiment of this application, the regional identifier of the area to which the SIM card installed in the mobile phone 1 belongs is used as the regional identifier of the mobile phone 1 as one of the limiting factors of the transmission power of the mobile phone 1 . In this way, the maximum transmit power of the mobile phone 1 can be increased on the premise of meeting the SAR standard specified in the area corresponding to the regional identification of the SIM card of the mobile phone 1, thereby improving the communication quality of the mobile phone 1. In addition, there is no need to wait for the search and registration network to be completed, so that the transmission power of mobile phone 1 can meet the requirements of the corresponding area, which can reduce the possibility that the use of mobile phone 1 does not comply with the regional regulations of mobile phone 1 and ensure that the use of mobile phone 1 complies with the regional regulations of mobile phone 1. Regulation.

S303. The application processor reads the second limited transmission power corresponding to the area identification of mobile phone 1 from the first preset configuration file.

It can be known from the description of the above embodiments that the first preset configuration file stored in the application processor includes multiple area identifiers and the limited transmission power corresponding to each area identifier. Therefore, after the application processor obtains the area identification of mobile phone 1, it can read the limited transmission power corresponding to the area identification of mobile phone 1 according to the first preset configuration file. In this embodiment, the area identification corresponding to mobile phone 1 is The limited transmission power is recorded as the second limited transmission power.

In some embodiments, the application processor reads the second limited transmission power corresponding to the area identification of mobile phone 1 from the first preset configuration file. Specifically, the application processor searches for the mobile phone in the first preset configuration file. If the area identification of mobile phone 1 is found in the first preset configuration file, the limited transmission power corresponding to the area identification is read as the second limited transmission power of mobile phone 1.

S304. The application processor sends the second limited transmission power to the modem.

In some embodiments, the transmission power of the mobile phone 1 is limited according to the limited transmission power, specifically the modem limits the transmission power of the antenna of the mobile phone 1 . Therefore, when the application processor reads from the first default configuration file After the second limited transmission power corresponding to the network to which mobile phone 1 belongs, the application processor sends the second limited transmission power to the modem.

In some embodiments, in S304, the application processor may send the second limited transmission power to the modem by calling an interface provided by the modem. Wherein, the second limited transmission power is used by the modem to write the second limited transmission power into the transmission power parameter in the modem.

S305. The modem receives the second limited transmission power from the application processor, and sets the second limited transmission power as the transmission power parameter of the modem.

It can be seen from the above description that the transmission power parameter of the modem represents the maximum transmission power specified by the mobile terminal that is allowed to be used by the mobile phone 1 itself. In this embodiment, after receiving the second limited transmission power, the modem sets the second limited transmission power as the transmission power parameter, that is, the maximum transmission power required by the mobile phone 1 for itself is the second limited transmission power.

S306. The modem selects the smallest restricted transmit power from the transmit power set as the maximum transmit power of mobile phone 1.

Wherein, the transmission power set includes a first limited transmission power and a transmission power parameter.

It can be seen from the description of the above embodiments that when the mobile phone 1 uses the mobile service provided by the registered network, it needs to comply with the first limit on the transmission power of the mobile terminal by the network. At the same time, in order to meet the requirements of mobile phone 1 for its own transmission power, mobile phone 1 also needs to meet the limitations of the above-mentioned transmission power parameters.

Therefore, in this embodiment, after S305, the first transmission power and the transmission power parameter (ie, the second transmission power) are used as a transmission power set. The modem then selects the smallest restricted transmit power from the transmit power set as the maximum transmit power of mobile phone 1.

S307. The modem limits the transmission power of mobile phone 1 according to the maximum transmission power.

In some embodiments, the modem limits the transmission power of the mobile phone 1 according to the maximum transmission power. Specifically, the modem may control the antenna of the mobile phone 1 to transmit at the maximum transmission power according to the maximum transmission power; or the modem controls the antenna to transmit at no higher than the maximum transmission power. Transmit with the transmitting power.

In some embodiments, the above-mentioned S307 may specifically include: the modem limits the transmission power of the mobile phone 1 in the preset signal according to the maximum transmission power. The preset signal includes at least one of the following: the signal of the physical random access channel of the mobile phone 1, the signal of the physical uplink control channel, the signal of the physical uplink shared channel, and the channel sounding reference signal.

When the modem limits the transmission power of mobile phone 1 according to the maximum transmission power, the transmission power of each of the above preset signals of mobile phone 1 will be limited according to the maximum transmission power to ensure that the actual SAR value of mobile phone 1 when in use meets the requirements of the mobile phone. SAR standards specified in area 1.

It should be noted that the area identifiers included in the first preset configuration file stored by the application processor may be area identifiers of all known areas, or may only include area identifiers of some areas in the known areas. When the first preset configuration file only includes the area identifiers of some areas, between S302 and S303, the above method further includes: the application processor searches for the area identifier of the mobile phone 1 in the first preset configuration file. If the application processor detects that the region identifier of mobile phone 1 exists in the first preset configuration file, S303 is executed.

In other embodiments, if the application processor detects that the region identifier of mobile phone 1 does not exist in the first preset configuration file, the application processor can obtain the default limited transmission power as the second limited transmission power. Among them, the default limit transmit power meets the SAR standards specified in all known areas. Among them, the specific default limit for transmit power is The value can be set according to the actual situation. In some embodiments, the default limited transmission power may also be pre-stored in the first preset configuration file of the application processor. In this way, even if the limited transmission power corresponding to the regional identification of mobile phone 1 cannot be obtained in the first preset configuration file, it can still be ensured that the actual SAR value corresponding to the transmission power of mobile phone 1 when in use satisfies the SAR specified in the area where mobile phone 1 is located. standard.

In the technical solution provided by the embodiment of the present application, the mobile phone 1 will dynamically adjust the transmission power parameters in the mobile phone 1 based on the regional identification of the mobile phone 1 and the SAR standard of the corresponding area. In this way, when the mobile phone 1 is used in different areas, the transmission power of the mobile phone 1 can be limited with reference to the maximum transmission power required by the SAR standard in the corresponding area. At the same time, combined with the transmission power limit of the network, it is ensured that the transmission power of mobile phone 1 when in use can meet the network's requirements for the transmission power of mobile phone 1. In this way, mobile phone 1 can increase the maximum transmission power of mobile phone 1 as much as possible on the premise of meeting the SAR standards and network requirements of the area where it is located, ensuring that mobile phone 1 has better communication quality.

In some embodiments, the configuration file stored in the application processor of the mobile phone 1 also includes the SAR gear level. When limiting the transmission power of mobile phone 1, it is also necessary to meet the limited transmission power specified in the SAR gear of the configuration file.

Among them, the SAR gear can be set to a universal SAR gear. The general SAR gear can be determined according to the SAR standards specified in most areas, and can be a gear that meets the SAR standards specified in most areas. The general SAR gear level may be higher than the SAR standard specified in some areas, such as area A; and the general SAR gear level may also be lower than the SAR standard specified in some areas, such as area B.

When mobile phone 1 configured with a universal SAR gear is used in the above area A, if the modem limits the transmission power of mobile phone 1 according to the maximum transmission power corresponding to the SAR gear, the actual SAR value of mobile phone 1 may not meet the above regulations in area A. SAR standard. Therefore, before S306, the above method also includes:

Therefore, the application processor reads the SAR gear level from the configuration file after the mobile phone 1 is turned on; and, the application processor sends the SAR gear level to the modem. The modem receives and analyzes the SAR gear and obtains the limited transmit power corresponding to the SAR gear.

In this embodiment, the transmission power set in S306 includes: a first limited transmission power, a transmission power parameter, and a third limited transmission power. That is, the limited transmission power, the first limited transmission power and the second limited transmission power corresponding to the SAR gear of the modem are used as a transmission power set, and the minimum transmission power is selected from among them as the maximum transmission power of the mobile phone 1 . In this way, it can be ensured that the SAR value actually emitted by the mobile phone 1 meets the SAR standard specified in the area where the mobile phone 1 is located.

In other embodiments, considering that different regions have different SAR standards, multiple regional identifiers and the SAR gear levels corresponding to each regional identifier can also be configured in the first preset configuration file. Specifically, please refer to Figure 5. The above method also includes S501-S504 before S306. It should be noted that in this embodiment, a SIM card is installed in the mobile phone 1 . in:

S501. The application processor obtains the area identifier of the area to which the SIM card belongs.

S502. The application processor reads the target SAR gear corresponding to the area identifier of the area to which the SIM card belongs from the first preset configuration file.

Since the first preset configuration file stored by the application processor also includes the SAR gear level corresponding to each area identifier, after the application processor obtains the area identifier of the area to which the SIM card belongs, the application processor can start from the first preset configuration file. The SAR gear corresponding to the regional identifier of the area where the SIM card belongs is read from the file. In this embodiment, the SAR gear corresponding to the area identifier of the area to which the SIM card belongs is recorded as the target SAR gear. The target SAR level indicates the SAR standard specified in the area where the SIM card belongs.

S503. The application processor sends the target SAR gear level to the modem.

S504. The modem receives and analyzes the target SAR gear, and obtains the third limited transmission power.

Each SAR gear corresponds to a limited transmit power. After the modem receives the target SAR gear, the target SAR gear can be analyzed to obtain the limited transmit power corresponding to the target SAR gear, which is recorded as the third limited transmit power.

In some embodiments, a first preset configuration file is stored in the modem, and the first preset configuration file stored in the modem includes multiple SAR gear levels and the limited transmission power corresponding to each SAR gear level. After the modem receives the target SAR gear level, the target SAR gear level can be searched for in the first preset configuration file stored in the modem, and the limited transmission power corresponding to the target SAR gear level can be read therefrom.

Among them, mobile phone 1 can execute the above-mentioned S301-S305, and then execute S501-S504; it can also execute S501-S504 first, and then execute S301-S305; or, the mobile phone 1 can execute the above-mentioned S301-S305 at the same time, and then execute S501-S504. The embodiment of the present application does not limit the order of S301-S305 and S501-S504.

Further, in this embodiment, the transmission power set also includes a third limited transmission power. That is, in the above S306, the modem selects the smallest limited transmission power among the first limited transmission power, the transmission power parameter and the third limited transmission power as the maximum transmission power of the mobile phone 1. In the technical solution provided by the embodiment of this application, it can be ensured that the actual SAR value corresponding to the transmission power of the mobile phone 1 meets the SAR standard specified in the area of the mobile phone 1 .

The above-mentioned transmission power limiting method shown in Figures 3 to 5 is to pre-configure multiple area identifiers and limited transmission power and other information corresponding to each area identifier in the first preset configuration file, and store the first preset configuration file in in the application processor. After the mobile phone 1 is turned on, the application processor reads the corresponding limited transmission power in the first preset configuration file according to the obtained region identification of the mobile phone 1 . In other embodiments, a preset configuration file (such as a second preset configuration file) that stores multiple area identifiers and information such as limited transmission power corresponding to each area identifier may also be stored in the modem. In this embodiment, after the mobile phone 1 is turned on, the modem reads the corresponding limited transmission power from the second preset configuration file according to the region identification of the mobile phone 1, and limits the transmission power of the mobile phone 1.

In some embodiments, this application also provides a transmission power limiting method. Similarly, this transmission power limiting method can be applied to the mobile phone 1 shown in Figure 1. In this embodiment, a second preset configuration file is stored in the modem of the mobile phone 1, and the second preset configuration file includes multiple area identifiers and the limited transmission power corresponding to each area identifier. As shown in Figure 6, the method includes S600-S605. in:

S600. Mobile phone 1 is powered on.

S601. The modem obtains the fourth restricted transmission power of mobile phone 1 from the network.

S602. The modem obtains the region identification of mobile phone 1.

Controlled by the description of the above embodiments, the area identification of the mobile phone 1 is used to indicate the area to which the mobile phone 1 belongs. Among them, the area to which mobile phone 1 belongs can be: the area to which the network registered after mobile phone 1 is turned on, the area indicated by the system software version in mobile phone 1, or the area to which the SIM card installed in mobile phone 1 belongs.

In some embodiments, when the area to which mobile phone 1 belongs is the area to which the network registered after mobile phone 1 is turned on, the modem may specifically obtain the area identifier of mobile phone 1 by: the modem searches the network after S600 and obtains the area identifier of the area to which the network belongs. . In this embodiment, the area identifier of the area to which the network belongs is used as the area identifier of the mobile phone 1 .

In other embodiments, when the area to which mobile phone 1 belongs is the area indicated by the system software version of mobile phone 1, as shown in Figure 7A, between S600 and S602, the above method also includes S701 and S702. in:

S701. The application processor reads the system software identification of mobile phone 1.

S702. The application processor sends the system software identification of mobile phone 1 to the modem.

Please continue to refer to Figure 7A. In this embodiment, S602 may specifically be S602a.

S602a. The modem receives the system software identification of the mobile phone 1 from the application processor.

Among them, the system software identification is used to indicate the region to which the supplier of mobile phone 1 belongs or the operator version information of mobile phone 1. In this embodiment, the regional identifier of the mobile phone 1 is the identifier of the region to which the supplier of the mobile phone 1 belongs or the operator version information of the mobile phone 1 .

Among them, mobile phone 1 can execute S601 first, and then execute S701, S702, and S602a, or it can execute S701, S702, and S602a first, and then execute S601, or it can also execute S601 and S701, S702, and S602a at the same time. In the embodiment of the present application, the order of S601 and S701, S702 and S602a is not limited.

In other embodiments, when the area to which the mobile phone 1 belongs is the area to which the SIM card installed in the mobile phone 1 belongs, between S600 and S602, as shown in Figure 7B, the above method also includes S703 and S704. in:

S703. The application processor reads the area identifier of the area to which the SIM card belongs. Among them, the area identifier of mobile phone 1 is the area identifier of the area to which the SIM card belongs.

S704. The application processor sends the area identifier of the area to which the SIM card of mobile phone 1 belongs to the modem.

In this embodiment, the above-mentioned S602 may specifically be S602b.

S602b. The modem receives the area identification of the area to which the SIM card of mobile phone 1 belongs from the application processor.

Among them, mobile phone 1 can execute S601 first, and then execute S703, S704 and S602b, or it can execute S703, S704 and S602b first, and then execute S601, or it can also execute S601 and S703, S704 and S602b at the same time. In the embodiment of the present application, the order of S601 and S703, S704 and S602b is not limited.

In the above embodiment, the area to which the network searched by mobile phone 1 belongs, the area indicated by the system software version of mobile phone 1, and the area to which the SIM card belongs are used as the area indicated by the area identifier of mobile phone 1, all of which can satisfy the requirements of mobile phone 1. Under the premise that the regional identification corresponds to the SAR standard specified in the region and the transmission power limit of the network in the area, the maximum transmission power of mobile phone 1 is increased, thereby improving the communication quality of mobile phone 1.

S603. The modem reads the fifth limited transmission power corresponding to the area identification of mobile phone 1 from the second preset configuration file.

S604. The modem uses the smallest limited transmission power in the transmission power set as the maximum transmission power of mobile phone 1.

Wherein, the transmission power set includes a fourth limited transmission power and a fifth limited transmission power.

S605. The modem limits the transmission power of mobile phone 1 according to the maximum transmission power.

In this embodiment of the present application, multiple area identifiers and the limited transmission power corresponding to each area identifier are pre-stored in the second preset configuration file in the modem. After the mobile terminal is powered on, the modem reads the corresponding fifth limited transmission power from the second preset configuration file according to the obtained region identifier of the mobile terminal. Combining the fifth limited transmission power with the fourth limited transmission power required by the network, the transmission power of the mobile terminal is limited.

In this way, when the mobile phone 1 is used in different areas, the transmission power of the mobile terminal can be limited by referring to the maximum transmission power required by the SAR standard in the corresponding area. At the same time, combined with the transmission power limit of the network, it is ensured that the transmission power when the mobile terminal is used can meet the network's requirements for the mobile terminal's transmission power. In this way, mobile terminals can On the premise of meeting the SAR standards and network requirements of the region, try to increase the maximum transmit power of mobile phone 1 to ensure better communication quality of mobile phone 1.

In some embodiments, in the transmission power limiting method shown in Figure 6, the application processor can also read the SAR gear set by the mobile phone 1 from the preset configuration file stored in the application processor after the mobile phone 1 is turned on. . The application processor then sends the SAR gear level to the modem. After the modem receives the SAR gear, it analyzes and obtains the limited transmit power corresponding to the SAR gear. In this embodiment, the transmission power set in S604 also includes the limited transmission power corresponding to the SAR gear.

In other embodiments, the default configuration file stored in the application processor includes multiple areas and SAR gear levels corresponding to the identifiers of each area. After the mobile phone 1 is turned on, the application processor obtains the region identification of the mobile phone 1. The application processor reads the target SAR gear level corresponding to the area identification of mobile phone 1 from the preset configuration file stored in the application processor, and sends the target SAR gear level to the modem. The modem analyzes the target SAR gear to obtain the corresponding limited transmission power, and uses the limited transmission power corresponding to the target SAR gear obtained in this embodiment as one of the transmission power sets.

Regarding the transmission power limiting method in the embodiments shown in FIGS. 6 to 7A and 7B, various possible specific implementations have been described in detail in the embodiments shown in FIGS. 3 to 5. Here we will No detailed explanation will be given.

In the related art, corresponding SAR gear levels are not set for all known areas. Therefore, in the embodiment of the present application, another transmission power limiting method is also provided, by updating the SAR gear in the preset configuration file of the application processor. Set corresponding SAR gears for multiple known areas. In this way, after the mobile phone 1 is turned on and used in any area, the actual SAR value corresponding to the transmission power of the mobile phone 1 can meet the SAR standard specified in that area.

The transmission power limiting method proposed in this embodiment is applied to the above-mentioned mobile phone 1. The SIM card is installed in phone 1. A third preset configuration file is stored in the application processor of mobile phone 1, and the third preset configuration file includes the SAR gear level corresponding to each area identifier. As shown in Figure 8, the method includes S800-S807. in:

S800. Mobile phone 1 is powered on.

S801. The application processor obtains the area identifier of the area to which the SIM card belongs; where the area identifier of the area to which the SIM card belongs includes the MCC and/or PLMN to which the SIM card belongs;

S802. The application processor reads the target SAR gear corresponding to the area identifier of the area to which the SIM card belongs from the third default configuration file.

S803. The application processor sends the target SAR gear level to the modem.

S804. The modem receives and analyzes the target SAR gear, and obtains the sixth limit transmission power.

S805. The modem obtains the seventh limit transmission power of mobile phone 1 from the network.

S806. The modem uses the smallest limited transmission power in the transmission power set as the maximum transmission power of mobile phone 1; where the transmission power set includes the sixth limited transmission power and the seventh limited transmission power.

S807. The modem limits the transmission power of mobile phone 1 according to the maximum transmission power.

In the embodiment of the present application, in the third preset configuration file stored by the application processor, corresponding SAR gears are set for more known areas according to the SAR standards specified in the respective areas. After the mobile terminal is turned on, the sixth limit transmit power specified in the area is determined based on the SAR gear level corresponding to the area where the mobile terminal's SIM card belongs. The modem then determines the maximum transmit power of the mobile terminal in combination with the seventh limit transmit power required by the network. In this way, when mobile phone 1 is used in different areas, it can refer to the maximum transmit power limit of the SAR standard of the area where the SIM card belongs. Control the transmit power of mobile terminals. At the same time, combined with the transmission power limit of the network, it is ensured that the transmission power when the mobile terminal is used can meet the network's requirements for the mobile terminal's transmission power. In this way, the mobile terminal can maximize the maximum transmit power of the mobile terminal and ensure better communication quality of the mobile terminal on the premise of meeting the SAR standards and network requirements of the area where it is located.

Regarding the transmission power limiting method in the embodiment shown in Figure 8, various possible specific implementations have been described in detail in S501-S504 in the embodiment shown in Figure 5, and will not be described in detail here.

Other embodiments of the present application provide a mobile terminal. The mobile terminal includes: a processor and a memory; wherein the processor includes an application processor and a modem, and the application processor is coupled to the modem; and the memory is coupled to the processor. Computer program codes are stored in the memory. The computer program codes include computer instructions. When the computer instructions are executed by the processor, the mobile terminal causes the mobile terminal to perform various functions or steps performed by the mobile phone 1 in the method embodiment. The structure of the mobile terminal may refer to the structure of the mobile phone 1 shown in FIG. 2 . Specifically, the above-mentioned mobile terminal may be a mobile phone 1.

Embodiments of the present application also provide a computer-readable storage medium. The computer-readable storage medium includes computer instructions. When the computer instructions are run on the above-mentioned mobile terminal (such as mobile phone 1), the mobile terminal is caused to execute the method in the above-mentioned method embodiment. Each function or step performed by mobile phone 1.

Embodiments of the present application also provide a computer program product. When the computer program product is run on a computer, it causes the computer to perform each function or step performed by the mobile phone 1 in the above method embodiment. The computer may be a mobile terminal, such as a mobile phone 1.

Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In practical applications, the above functions can be allocated according to needs. Different functional modules are completed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be combined or can be integrated into another device, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

A unit described as a separate component may or may not be physically separate. A component shown as a unit may be one physical unit or multiple physical units, that is, it may be located in one place, or it may be distributed to multiple different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

Integrated units may be stored in a readable storage medium if they are implemented in the form of software functional units and sold or used as independent products. Based on this understanding, the technical solutions of the embodiments of the present application are essentially or contribute to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the software product is stored in a storage medium contains several instructions to make a device (can All or part of the steps of the methods of each embodiment of the present application are executed by a microcontroller, chip, etc.) or a processor. The aforementioned storage media include: U disk, mobile hard disk, read only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes.

The above contents are only specific implementation modes of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application shall be covered by the protection scope of the present application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A transmission power limiting method, characterized in that it is applied to a mobile terminal, the mobile terminal includes an application processor and a modem, the modem is coupled to the application processor; a first preset is stored in the application processor Configuration file, the first preset configuration file includes multiple area identifiers and the limited transmission power corresponding to each area identifier; the method includes:

After the mobile terminal is powered on, the modem obtains the first limited transmission power of the network for the mobile terminal;

The application processor obtains the area identification of the mobile terminal;

The application processor reads the second limited transmission power corresponding to the area identification of the mobile terminal from the first preset configuration file;

the applications processor sends the second limited transmit power to the modem;

The modem receives the second limited transmit power from the application processor and sets the second limited transmit power as a transmit power parameter of the modem;

The modem selects the smallest limited transmission power from the transmission power set as the maximum transmission power of the mobile terminal; wherein the transmission power set includes the first limited transmission power and the transmission power parameter;

The modem limits the transmission power of the mobile terminal according to the maximum transmission power.
The method of claim 1, further comprising:

The modem searches the network after the mobile terminal is turned on and obtains the area identifier of the area to which the network belongs;

The modem sends the area identifier of the area to which the network belongs to the application processor;

Wherein, the application processor obtains the area identifier of the mobile terminal, including:

The application processor receives the area identification of the area to which the network belongs from the modem; wherein the area identification of the mobile terminal is the area identification of the area to which the network belongs.
The method according to claim 2, characterized in that the area identifier of the area to which the network belongs is the mobile country code MCC and/or the public land mobile network PLMN of the area to which the network belongs.
The method according to claim 1, wherein the application processor obtains the area identifier of the mobile terminal, including:

The application processor reads the system software identification of the mobile terminal after the mobile terminal is turned on;

Wherein, the system software identification is used to indicate the region to which the supplier of the mobile terminal belongs or the operator version information of the mobile terminal; the region identification of the mobile terminal is the region identification of the region to which the supplier of the mobile terminal belongs. Or the operator version information of the mobile terminal.
The method according to claim 1, characterized in that a subscriber identification SIM card is installed in the mobile terminal; the application processor obtains the area identification of the mobile terminal, including:

The application processor reads the area identification of the area to which the SIM card belongs;

Wherein, the area identifier of the mobile terminal is the area identifier of the area to which the SIM card belongs.
The method according to any one of claims 1-5, characterized in that a SIM card is installed in the mobile terminal; the first preset configuration file also includes the specific absorption rate SAR corresponding to each area identifier. stall;

The modem selects the smallest restricted transmit power from a set of transmit powers as the mobile terminal Before setting the maximum transmit power of the terminal, the method further includes:

The application processor obtains the area identifier of the area to which the SIM card belongs; wherein the area identifier of the area to which the SIM card belongs includes the MCC and/or PLMN to which the SIM card belongs;

The application processor reads the target SAR gear corresponding to the area identifier of the area to which the SIM card belongs from the first preset configuration file;

The application processor sends the target SAR gear level to the modem;

The modem receives and analyzes the target SAR gear level to obtain the third limited transmission power;

Wherein, the transmission power set also includes the third limited transmission power.
The method according to any one of claims 1 to 6, characterized in that the modem limits the transmission power of the mobile terminal according to the transmission power parameter, including:

The modem limits the transmission power of the mobile terminal in a preset signal according to the transmission power parameter; wherein the preset signal includes at least one of the following: a signal of a physical random access channel of the mobile terminal, a physical uplink The signal of the link control channel, the signal of the physical uplink shared channel and the channel sounding reference signal.
A transmission power limiting method, characterized in that the method is applied to a mobile terminal, the mobile terminal includes an application processor and a modem, the application processor is coupled to the modem; a second preset is stored in the modem. Assume a configuration file, and the second preset configuration file includes a plurality of area identifiers and a limited transmission power corresponding to each area identifier; the method includes:

After the mobile terminal is powered on, the modem obtains the fourth limited transmission power of the network for the mobile terminal;

The modem obtains the area identification of the mobile terminal;

The modem reads the fifth limited transmission power corresponding to the area identification of the mobile terminal from the second preset configuration file;

The modem uses the smallest limited transmission power in the transmission power set as the maximum transmission power of the mobile terminal; wherein the transmission power set includes the fourth limited transmission power and the fifth limited transmission power;

The modem limits the transmission power of the mobile terminal according to the maximum transmission power.
The method according to claim 8, characterized in that the modem obtains the area identification of the mobile terminal, including:

The modem searches the network and obtains the area identifier of the area to which the network belongs; wherein the area identifier of the mobile terminal is the area identifier of the area to which the network belongs.
The method of claim 8, further comprising:

The application processor reads the system software identification of the mobile terminal after the mobile terminal is turned on;

The application processor sends the system software identification of the mobile terminal to the modem;

Wherein, the modem obtains the area identification of the mobile terminal, including:

The modem receives the system software identification of the mobile terminal from the application processor; wherein the system software identification is used to indicate the region to which the supplier of the mobile terminal belongs or the operator version information of the mobile terminal; The regional identifier of the mobile terminal is the identifier of the region to which the supplier of the mobile terminal belongs or the operator version information of the mobile terminal.
A transmission power limiting method, characterized in that the method is applied to a mobile terminal, and the mobile terminal The terminal includes an application processor and a modem, the application processor is coupled to the modem, and a SIM card is installed in the mobile terminal; a third preset configuration file is stored in the application processor, and the third preset The configuration file includes the SAR gear corresponding to each area identifier; the method includes:

After the mobile terminal is powered on, the application processor obtains the area identifier of the area to which the SIM card belongs; wherein the area identifier of the area to which the SIM card belongs includes the MCC and/or PLMN to which the SIM card belongs;

The application processor reads the target SAR gear corresponding to the area identifier of the area to which the SIM card belongs from the third preset configuration file;

The application processor sends the target SAR gear level to the modem;

The modem receives and analyzes the target SAR gear level to obtain the sixth limited transmission power;

The modem obtains the seventh transmission power limit of the network for the mobile terminal;

The modem uses the smallest limited transmission power in the transmission power set as the maximum transmission power of the mobile terminal; wherein the transmission power set includes the sixth limited transmission power and the seventh limited transmission power;

The modem limits the transmission power of the mobile terminal according to the maximum transmission power.
A mobile terminal, characterized in that it includes a processor and a memory, the processor includes an application processor and a modem; the application processor is coupled to the modem;

The memory is coupled to the processor, the memory is used to store computer program code, the computer program code includes computer instructions, and when the processor executes the computer instructions, the mobile terminal executes claim 1 The method described in any one of to 11.
A computer-readable storage medium, characterized in that instructions are stored in the computer-readable storage medium. When the instructions are run in a mobile terminal, the mobile terminal is caused to execute any one of claims 1 to 11. method described in the item.