CN115379047A

CN115379047A - Communication terminal and control method thereof

Info

Publication number: CN115379047A
Application number: CN202110556342.1A
Authority: CN
Inventors: 朱广卿
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-11-22
Anticipated expiration: 2041-05-21
Also published as: CN115379047B

Abstract

The present disclosure relates to a communication terminal and a control method thereof, the communication terminal including: the wireless communication module is used for receiving and transmitting wireless signals; the SAR sensor is used for detecting the distance between a human body and the communication terminal; and the sensor chip is respectively in physical connection with the wireless communication module and the SAR sensor and is used for controlling the SAR sensor to be turned on or off based on the state identification signal of the wireless communication module.

Description

Communication terminal and control method thereof

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication terminal and a control method thereof.

Background

Communication terminals (e.g., cell phones, etc.) generate electromagnetic radiation when transmitting signals. SAR (Specific Absorption Rate) is an electromagnetic wave energy Absorption ratio of a communication terminal, which is defined as: under the action of the external electromagnetic field, an induction electromagnetic field is generated in the human body.

For safety reasons, a SAR sensor is generally provided in a communication terminal, and the transmission power of the communication terminal is controlled by an AP (Application Processor) so that the SAR value of the communication terminal does not exceed a range specified by a safety SAR.

However, in the current implementation scheme, the AP monitors the SAR sensor in an uninterrupted monitoring manner, which results in a long working time of the AP and a high power consumption.

Disclosure of Invention

In view of this, the disclosed embodiments provide a communication terminal and a control method thereof.

According to a first aspect of the embodiments of the present disclosure, there is provided a communication terminal, including:

the wireless communication module is used for receiving and transmitting wireless signals;

the SAR sensor is used for detecting the distance between a human body and the communication terminal;

and the sensor chip is respectively in physical connection with the wireless communication module and the SAR sensor and is used for controlling the SAR sensor to be turned on or off based on the state identification signal of the wireless communication module.

In one embodiment, the physical connection includes:

the sensor chip is directly connected with the wireless communication module;

the sensor chip is specifically used for receiving the state identification signal of the wireless communication module through the direct connection, performing logic operation on the state identification, and controlling the SAR sensor to be turned on or turned off according to a logic operation result.

In one embodiment, the communication terminal further comprises:

the logic gate circuit is used for receiving the state identification signal of the wireless communication module and carrying out logic operation on the state identification signal to obtain a logic operation signal;

the interrupt controller is used for receiving and generating an interrupt signal based on the logic operation signal;

wherein the physical connection comprises the sequential connection among the wireless communication module, the logic gate circuit, the interrupt controller and the sensor chip;

and the sensor chip controls the SAR sensor to be switched on or switched off based on the interrupt signal.

In one embodiment, the state identification signal is a GPIO signal output from a basic input output GPIO pin of the wireless communication module.

In one embodiment, the physical connection is established between an interrupt pin of the sensor chip and the wireless communication module.

In an embodiment, the sensor chip is specifically configured to turn on the SAR sensor when the status identification signal indicates that the wireless communication module is in a signal transmission status; and when the state identification signal indicates that the wireless communication module is not in a signal transmission state, closing the SAR sensor.

In one embodiment, the wireless communication module comprises at least one of:

a radio frequency chip driver of a modem for cellular mobile communications;

a wireless communication chip driver for bluetooth communication;

a wireless communication chip driver for WiFi communication;

a wireless communication chip driver for UWB communication.

In one embodiment, the logic gate circuit comprises: a logic or gate, an input terminal of the logic or gate being connected to an output terminal of a radio frequency chip driver of a modem for cellular mobile communication, a wireless communication chip driver for bluetooth communication, a wireless communication chip driver for WiFi communication, and/or a wireless communication chip driver for UWB communication;

the logical OR gate is used for receiving the state identification signal of the wireless frequency chip driver of the modem for cellular mobile communication, the wireless communication chip driver for Bluetooth communication, the wireless communication chip driver for WiFi communication and/or the wireless communication chip driver for UWB communication and carrying out logical OR operation on the state identification signal to obtain the logical operation signal, wherein when the state identification signal is at a first level, the corresponding wireless communication module is indicated to be in a signal emission state; when the state identification signal is at a second level, indicating that the corresponding wireless communication module is not in a signal transmission state; the first level is higher than the second level.

According to a second aspect of the embodiments of the present disclosure, there is provided a communication terminal control method applied to the communication terminal according to any one of the first aspect, the method including:

receiving a state identification signal of the wireless communication module through physical connection between the wireless communication module and the sensor chip;

and controlling the SAR sensor to be turned on or off based on the state identification signal of the wireless communication module.

In one embodiment, the controlling the SAR sensor to be turned on or off based on the status identification signal of the wireless communication module includes:

performing logic operation on the state identification signal to obtain a logic operation result;

and controlling the SAR sensor to be switched on or switched off according to the logical operation result.

In one embodiment, the logical operation result is a logical operation signal;

the controlling the SAR sensor to be turned on or off according to the logical operation result comprises the following steps:

generating an interrupt signal based on the logical operation signal;

and controlling the sensor to be switched on or off based on the interrupt signal.

when the state identification signal indicates that the wireless communication module is in a signal transmission state, the SAR sensor is started;

and when the state identification signal indicates that the wireless communication module is not in a signal transmission state, closing the SAR sensor.

In one embodiment, the performing a logical operation on the state identification signal to obtain a logical operation result includes:

performing logical or operation on the state identification signal to obtain a logical or operation result, wherein when the state identification signal is at a first level, the state identification signal indicates that the corresponding wireless communication module is in a signal transmission state; when the state identification signal is at a second level, indicating that the corresponding wireless communication module is not in a signal transmission state; the first level is higher than the second level.

The communication terminal provided by the embodiment of the disclosure establishes physical connection with the wireless communication module and the SAR sensor through the sensor chip respectively, acquires a state identification signal of the wireless communication module through the physical connection, and controls the SAR sensor to be turned on or turned off based on the state identification signal acquired through the physical connection transmission. The communication terminal directly and timely feeds back the state identification signal of the wireless communication module to the sensor chip through physical connection, and then the sensor chip timely controls the SAR sensor to be turned on or turned off based on the state identification signal, and compared with the forwarding or even the forwarding after processing of an AP (access point), a Central Processing Unit (CPU) or a Micro Controller Unit (MCU) processing chip and the like through the communication terminal, the communication terminal improves the timeliness of controlling the SAR sensor to be turned on or turned off based on the state identification signal of the wireless communication module, does not need to process the generated time delay through the AP, the CPU or the MCU and other processing chips, and improves the processing speed.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of embodiments of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the embodiments of the disclosure.

Fig. 1 is a schematic configuration diagram of a communication terminal in the related art;

fig. 2 is a schematic diagram of a first type of communication terminal shown in accordance with an exemplary embodiment;

fig. 3 is a schematic diagram illustrating a second type of communication terminal according to an exemplary embodiment;

fig. 4 is a schematic diagram illustrating a third type of communication terminal according to an exemplary embodiment;

fig. 5 is a flowchart illustrating a communication terminal control method according to an exemplary embodiment;

fig. 6 is a schematic diagram illustrating a fourth type of communication terminal according to an example embodiment;

FIG. 7 is a circuit diagram of a logic gate circuit shown in accordance with an exemplary embodiment;

fig. 8 is a block diagram illustrating a constituent structure of a communication terminal according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with embodiments of the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the embodiments of the disclosure, as detailed in the claims that follow.

The terminology used in the embodiments of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present disclosure. As used in the disclosed embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information in the embodiments of the present disclosure, such information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The word "if" as used herein may be interpreted as "at" \8230; "or" when 8230; \8230; "or" in response to a determination ", depending on the context.

The communication terminal of the present disclosure may include: a mobile phone, a cellular phone, a cordless phone, an SIP (session initiation protocol) phone, a smart phone, a WLL (wireless local loop) station, a PDA (personal digital assistant), a computer, a laptop, a handheld communication device, a handheld computing device, a satellite radio device, a wireless modem card, an STB (set top box), a vehicle-mounted device, a wearable device, a smart home device, and the like.

Fig. 1 is a schematic structural diagram of a communication terminal, as shown in fig. 1, the communication terminal includes: the SAR sensor comprises an Application Processor (AP) subsystem, a sensor processing subsystem, an SAR sensor and a communication module (such as RFC driver of modem, RFC driver of Wifi, RFC driver of BT and the like), wherein the SAR sensor reports SAR sampling data to the sensor processing subsystem, the sensor processing subsystem sends the SAR sampling data to the AP, and the AP adjusts the transmitting power of the communication module according to preset rules based on the SAR sampling data.

In the process, the AP monitors the SAR sensor in an uninterrupted monitoring mode, so that the power consumption is high, and the standby/use time of the communication terminal is shortened.

Fig. 2 is a schematic diagram illustrating a structure of a communication terminal 100 according to an exemplary embodiment, where, as shown in fig. 2, the communication terminal 100 includes:

a wireless communication module 110 for transceiving wireless signals;

an SAR sensor 120 for detecting a distance between a human body and the communication terminal 100;

the sensor chip 130 is respectively connected with the wireless communication module 110 and the SAR sensor 120 physically, and is configured to control the SAR sensor 120 to be turned on or off based on the status identification signal of the wireless communication module 110.

It is to be understood that the configuration illustrated in the present embodiment does not constitute a specific limitation to the communication terminal 100. In other embodiments of the present disclosure, communication terminal 100 may include more or fewer components than shown, or combine certain components, or split certain components, or a different arrangement of components.

In the present exemplary embodiment, the wireless communication module 110 is used for implementing mobile communication and wireless communication, and may include at least one wireless antenna, and the mobile communication may provide a solution including wireless communication of 2G/3G/4G/5G, etc. applied to the communication terminal 100. Wireless Communication may provide solutions for wireless Communication applied to the Communication terminal 100, including Wireless Local Area Networks (WLAN), bluetooth, global Navigation Satellite System (GNSS), frequency Modulation (FM), near Field Communication (NFC), infrared technology (IR), and the like.

In the process of implementing mobile communication and wireless communication by the wireless communication module 110, when the wireless communication module 110 sends a radio signal to a wireless communication system or a network, that is, the wireless communication module 110 is in a signal transmission state, the state identification signal of the wireless communication module 110 is set to a first value; when the wireless communication module 110 does not transmit a radio signal to the wireless communication system or the network, i.e., the wireless communication module 110 is not in the signal transmission state, the state identification signal of the wireless communication module 110 is set to the second value. Here, the radio signal may include: voice call signals, video call signals, various types of data transmitted through text and/or multimedia messages.

For example, when the communication terminal 100 transmits a voice call signal to the wireless communication system or the network, the status identification signal of the wireless communication module 110 is set to 1; when the communication terminal 100 does not transmit any radio signal to the wireless communication system or the network, the status identification signal of the wireless communication module 110 is set to 0.

For example, the wireless communication module 110 may update the status identification signal based on a change of whether the wireless communication module 110 is in the signal transmission state, for example, when the wireless communication module 110 is switched from being in the signal transmission state to not being in the signal transmission state, the status identification signal is updated from a first value to a second value; when the wireless communication module 110 is switched from the state of not being in the signal transmission state to the state of being in the signal transmission state, the state identification signal is updated from the second value to the first value.

For example, the wireless communication module 110 may update the status identification signal periodically according to the signal transmission status thereof.

In another exemplary embodiment, when the communication terminal 100 sends a radio signal to the wireless communication system or the network, it is further determined how much transmission power the communication terminal 100 sends the radio signal to the wireless communication system or the network, and if the wireless communication module 110 sends the radio signal to the wireless communication system or the network with transmission power greater than a preset power threshold, the status identification signal of the wireless communication module 110 is set to a first value; if the wireless communication module 110 sends the radio signal to the wireless communication system or the network with the transmission power less than or equal to the preset power threshold, the status flag signal of the wireless communication module 110 is set to the second value.

For example, when the communication terminal 100 sends text data and/or multimedia data to the wireless communication system or the network, if the transmission power of the wireless communication module 110 is greater than the preset power threshold, the status flag signal of the wireless communication module 110 is set to 1; if the transmission power of the wireless communication module 110 is less than or equal to the predetermined power threshold, the status flag signal of the wireless communication module 110 is set to 0. Here, the preset power threshold may be set to 15dBm.

It is to be noted here that the first value and the second value are two unequal values. For example, the first value is 0 and the second value is 1; for another example, the first value is 1 and the second value is 0.

The SAR sensor 120 is used to detect a distance between a human body and the communication terminal 100, and may be a distance sensor or a capacitive sensor, which is not limited in this disclosure.

In the exemplary embodiment, the physical connection 140 established between the sensor chip 130 and the wireless communication module 110 and the SAR sensor 120 respectively refers to a connection made to a relevant object (e.g., the sensor chip 130 and the wireless communication module 110, and the sensor chip 130 and the SAR sensor 120) by using a physical characteristic of the object, for example, the sensor chip 130 and the wireless communication module 110, and/or the sensor chip 130 and the SAR sensor 120 are connected by a line, and the line includes an electric wire, an electric wave, and the like.

Illustratively, the physical connections 140 include: direct line connections between corresponding ports. For example, a direct line connection between a first port of the sensor chip 130 and a second port of the wireless communication module 110, and/or a direct line connection between a third port of the sensor chip 130 and a fourth port of the SAR sensor 120. That is, the sensor chip 130 and the port corresponding to the wireless communication module 110 are connected by a direct line, and the sensor chip 130 and the port corresponding to the SAR sensor 120 are connected by a line.

Illustratively, the physical connections 140 may also be circuits through which connections between corresponding ports are made. For example, a first port of the sensor chip 130 is connected to a second port of the wireless communication module 110 through a first connection circuit, and a third port of the sensor chip 130 is connected to a fourth port of the SAR sensor 120 through a second connection circuit.

It should be noted that the physical connection 140 established between the sensor chip 130 and the wireless communication module 110 and the SAR sensor 120 does not need to pass through an AP, a Central Processing Unit (CPU), a Micro Controller Unit (MCU) processing chip, or the like of the communication terminal.

The sensor chip 130 acquires the status identification signal of the wireless communication module 110 based on the physical connection, and controls the SAR sensor 120 to be turned on or off.

Illustratively, the sensor chip 130 acquires a status identification signal of the wireless communication module 110 based on the physical connection, and controls the SAR sensor 120 to be turned on or off based on the status identification signal.

In an exemplary embodiment, the sensor chip 130 is specifically configured to turn on the SAR sensor 120 when the status identification signal indicates that the wireless communication module is in a signal transmission status; and when the state identification signal indicates that the wireless communication module is not in a signal transmission state, turning off the SAR sensor 120.

For example, when the status identification signal of the wireless communication module 110 is 1, the sensor chip 130 controls to turn on the SAR sensor 120; when the status identification signal of the wireless communication module 110 is 0, the sensor chip 130 controls to turn off the SAR sensor 120.

The communication terminal provided by the embodiment of the disclosure is respectively in physical connection with the wireless communication module and the SAR sensor through the sensor chip, acquires the state identification signal of the wireless communication module through the physical connection, and controls the SAR sensor to be turned on or turned off based on the state identification signal acquired through the physical connection transmission. The communication terminal directly and timely feeds back the state identification signal of the wireless communication module to the sensor chip through physical connection, and then the sensor chip timely controls the SAR sensor to be turned on or turned off based on the state identification signal, and compared with the forwarding, even the forwarding after processing, of an AP (access point), a Central Processing Unit (CPU) or a Micro Controller Unit (MCU) processing chip and the like through the communication terminal, the communication terminal improves the timeliness of the SAR sensor to be turned on or turned off based on the state identification signal of the wireless communication module, time delay generated by processing of the AP, the CPU or the MCU and the like processing chip is not needed, and the processing speed is improved.

In an exemplary embodiment, the physical connection includes:

the sensor chip 130 is directly connected with the wireless communication module 110;

the sensor chip 130 is specifically configured to receive the status identifier signal of the wireless communication module 110 through the direct connection, perform logical operation on the status identifier, and control the SAR sensor 120 to be turned on or turned off according to a logical operation result.

Illustratively, the sensor chip 130 and the wireless communication module 110 are integrated on a circuit board, and the pins of the first port of the sensor chip 130 are directly connected with the pins of the second port of the wireless communication module 110.

The sensor chip 130 obtains the status identification signal from the second port of the wireless communication module 110 through the first port, performs logical operation on the status identification signal, and finally controls the SAR sensor 120 to be turned on or off based on the logical operation result.

In an exemplary embodiment, the state identification signal is a GPIO signal output from a basic input output GPIO pin of the wireless communication module 110.

In another exemplary embodiment, the wireless communication module 110 may include one or more wireless communication components, each for implementing a mobile communication or a wireless communication. For example, one wireless communication component a is used to provide a solution for 5G wireless communication applied on the communication terminal 100; a wireless communication component B for providing a solution for wireless local area network communication applied on the communication terminal 100; and so on.

The sensor chip 130 respectively obtains the state identification signal 1 of the wireless communication component a and the state identification signal 2 of the wireless communication component B, performs or operation on the state identification signal 1 and the state identification signal 2, and finally controls the SAR sensor 120 to be turned on or turned off based on a logical operation result.

Illustratively, the wireless communication module 110 includes wireless communication components of at least one of:

a radio frequency chip driver of a modem for cellular mobile communications;

a wireless communication chip driver for bluetooth communication;

a wireless communication chip driver for WiFi communication;

a wireless communication chip driver for UWB communication.

Here, the physical connection includes: the sensor chip 130 is directly connected to a wireless frequency chip driver of a modem for cellular mobile communication, a wireless communication chip driver for bluetooth communication, a wireless communication chip driver for WiFi communication, and/or a wireless communication chip driver for UWB communication, respectively.

In another exemplary embodiment, the sensor chip 130 includes: and a logic judgment module. A physical connection comprising: the logic judgment module is respectively connected with a wireless frequency chip driver of a modem for cellular mobile communication, a wireless communication chip driver for Bluetooth communication, a wireless communication chip driver for WiFi communication and/or a direct connection between the wireless communication chip drivers for UWB communication.

The logic determination module may be a logic circuit included in the sensor chip 130, or an aggregate of software and hardware resources that the sensor chip 130 can perform the aforementioned logic operation based on a code.

In the process of implementing mobile communication or wireless communication by the wireless communication module 110, the status identification signal of each wireless communication component is set according to whether each wireless communication component is in the signal transmission status. Illustratively, for a wireless communication component in a signal transmission state, setting a state identification signal of the wireless communication component to a first value; and for the wireless communication component which is not in the signal transmission state, setting the state identification signal of the wireless communication component to be a second value.

Illustratively, in one update cycle, first, the radio frequency chip driver of the modem for cellular mobile communication transmits a radio signal to the cellular mobile communication network, and the status identification signal of the radio frequency chip driver of the modem for cellular mobile communication is set to 1; the wireless communication chip driver of the Bluetooth communication sends a radio signal to the Bluetooth system, and the state identification signal of the wireless communication chip driver of the Bluetooth communication is set to be 1; the wireless communication chip driver of the WiFi communication does not send a radio signal to the WiFi network, and the state identification signal of the wireless communication chip driver of the WiFi communication is set to be 0; the wireless communication chip driver of the UWB communication does not transmit a radio signal to the UWB communication network, and the status identification signal of the wireless communication chip driver of the UWB communication is set to 0; then, a wireless frequency chip driver of a modem of cellular mobile communication, a wireless communication chip driver of Bluetooth communication, a wireless communication chip driver of WiFi communication and a wireless communication chip driver of UWB communication respectively send respective state identification signals to a logic judgment module through physical connection; finally, the logic judgment module performs logic operation on the status identification signal, and controls the SAR sensor 120 to be turned on or off based on the logic operation result.

When the logic judgment module performs logic operation on the state identification signals, if at least one state identification signal of the wireless communication assembly is a first value in the state identification signals of all the wireless communication assemblies, the output logic operation result is an enable signal, and the enable signal is used for starting the SAR sensor 120; if the status identification signals of all the wireless communication components are of the second value, the output logic operation result is a disable signal, and the disable signal is used for turning off the SAR sensor 120.

For example, the logical operation may be an or operation, and when the status flag signal of the radio frequency chip driver of the modem for cellular mobile communication is 1, the status flag signal of the wireless communication chip driver for bluetooth communication is 1, the status flag signal of the wireless communication chip driver for wifi communication is 0, and the status flag signal of the wireless communication chip driver for uwb communication is 0, the logical judgment module performs an or operation based on the 4 status flag signals, and outputs a logical operation result of 1.

In another exemplary embodiment, a SAR reduction identifier is preset for each wireless communication component, and the SAR reduction identifier is used for indicating the on state of the SAR reduction function of the wireless communication component. For example, when the SAR reduction flag takes a third value (e.g., takes a value of 0), it indicates that the SAR reduction function of the wireless communication component is in an on state; and when the SAR reduction identification value is a fourth value (for example, the value is 1), indicating the SAR reduction function closing state of the wireless communication component.

In a statistical period, for example, first, the wireless communication component sends the respective state identification signal and SAR reduction identification to the logic determination module through physical connection, and of course, the SAR reduction identification of the wireless communication component may also be stored in the logic determination module in advance, which is not limited in the present application; then, the logic judgment module respectively updates the corresponding state identification signals based on the SAR reduction identification of each wireless communication component; finally, the updated status identification signal of each wireless communication component is logically operated, and the SAR sensor 120 is controlled to be turned on or off based on the logical operation result.

When the logic judgment module respectively updates the corresponding state identification signals based on the SAR reduction identification of each wireless communication assembly, if the state identification signals of the wireless communication assemblies are third values, namely the SAR reduction function of the wireless communication assemblies is in an open state, the state identification signals of the wireless communication assemblies are not changed; and if the state identification signal of the wireless communication assembly is a fourth value, namely the SAR reduction function closing state of the wireless communication assembly, updating the state identification signal of the wireless communication assembly into the inverted value of the state identification signal. For example, the updated state flag signal is a result of performing a logical and operation on the state flag signal and the reduced SAR flag after the logical not operation.

Fig. 3 is a schematic diagram illustrating a physical connection 140 according to an exemplary embodiment, such as the communication terminal 100 shown in fig. 3, further comprising:

a logic gate 1401, configured to receive the state identification signal of the wireless communication module 110, and perform logic operation on the state identification signal to obtain a logic operation signal;

an interrupt controller 1402 for receiving and generating an interrupt signal based on the logical operation signal;

the physical connections 140 include: the wireless communication module 110, the logic gate circuit 1401, the interrupt controller 1402 and the sensor chip 130 are connected in sequence;

the sensor chip 130 is specifically configured to control the SAR sensor 120 to be turned on or off based on the interrupt signal.

Here, when the wireless communication module 110 is in the signal transmission state, the wireless communication module 110 outputs a first level, the logic gate 1401 performs a predetermined logic operation based on the first level to obtain a first logic operation signal, and the interrupt controller 1402 receives the first logic operation signal and generates a first interrupt signal based on the first logic operation signal, wherein the first interrupt signal is used for controlling to turn on the SAR sensor 120.

When the wireless communication module 110 is not in the signal transmission state, the wireless communication module 110 outputs a second level, the logic gate circuit 1401 performs a preset logic operation based on the second level to obtain a second logic operation signal, and the interrupt controller 1402 receives the second logic operation signal and generates a second interrupt signal based on the second logic operation signal, wherein the second interrupt signal is used for controlling to turn off the SAR sensor 120.

Illustratively, the first level is higher than the second level.

In an exemplary embodiment, the physical connection 140 is established between the interrupt pin of the sensor chip 130 and the wireless communication module 110.

Fig. 4 is a schematic diagram illustrating the connection of a logic gate 1401 according to an exemplary embodiment, and as shown in fig. 4, the logic gate 1401 includes: a logic or gate 14011, an input terminal of the logic or gate 14011 being connected to an output terminal of a radio frequency chip driver of a modem for cellular mobile communication, a wireless communication chip driver for bluetooth communication, a wireless communication chip driver for WiFi communication, and/or a wireless communication chip driver for UWB communication;

the or gate 14011 is configured to receive the status identification signal of the wireless frequency chip driver of the modem for cellular mobile communications, the wireless communication chip driver for bluetooth communication, the wireless communication chip driver for WiFi communication, and/or the wireless communication chip driver for UWB communication, and perform a logical or operation on the status identification signal to obtain the logical operation signal, where when the status identification signal is at a first level, the or gate indicates that the corresponding wireless communication module is in a signal transmission state; when the state identification signal is at a second level, indicating that the corresponding wireless communication module is not in a signal transmission state; the first level is higher than the second level.

In the process of implementing mobile communication or wireless communication by the wireless communication module 110, the wireless communication module outputs a first level or a second level for the case whether each wireless communication module is in a signal transmission state. Illustratively, when the wireless communication module 110 is in a signal transmission state, the wireless communication module 110 outputs a first level; when the wireless communication module 110 is not in the signal transmitting state, the wireless communication module 110 outputs the second level.

Illustratively, in an update period, first, a radio frequency chip driver of a modem of cellular mobile communication transmits a radio signal to a cellular mobile communication network, and the radio frequency chip driver of the modem of cellular mobile communication outputs a first level; the wireless communication chip driver of the Bluetooth communication sends a radio signal to the Bluetooth system, and the wireless communication chip driver of the Bluetooth communication outputs a first level; the wireless communication chip driver of the WiFi communication does not send a radio signal to the WiFi network, and the wireless communication chip driver of the WiFi communication outputs a second level; the wireless communication chip driver for UWB communication does not transmit a radio signal to the UWB communication network, and the wireless communication chip driver for UWB communication outputs a second level; then, the wireless frequency chip driver of the modem for cellular mobile communication, the wireless communication chip driver for bluetooth communication, the wireless communication chip driver for WiFi communication, and the wireless communication chip driver for UWB communication input their respective level signals to the logic or gate 14011; finally, the or gate 14011 performs a logic operation on the level signal to obtain a logic operation signal, the interrupt controller generates an interrupt signal based on the logic operation signal, and controls the SAR sensor 120 to be turned on or off based on the interrupt signal.

Illustratively, when the or gate 14011 performs a logic operation on the level signal, if at least one level signal of the wireless communication components is a first level in the level signals of all the wireless communication components, a first logic operation signal is obtained, the interrupt controller 1402 generates a first interrupt signal based on the first logic operation signal, and turns on the SAR sensor 120 based on the first interrupt signal; if the level signals of all the wireless communication components are at the second level, a second logic operation signal is obtained, the interrupt controller 1402 generates a second interrupt signal based on the second logic operation signal, and turns off the SAR sensor 120 based on the second interrupt signal;

for example, the logical operation may be an or operation, and when the level signal of the radio frequency chip driver of the modem for cellular mobile communication is at the first level, the level signal of the wireless communication chip driver for bluetooth communication is at the first level, the level signal of the wireless communication chip driver for WiFi communication is at the second level, and the level signal of the wireless communication chip driver for UWB communication is at the second level, the logical or gate 14011 performs an or operation based on the 4 level signals to output the first logical operation signal.

In another exemplary embodiment, a SAR-reduction flag is preset for each wireless communication assembly, and the SAR-reduction flag is used for indicating the on state of the SAR-reduction function of the wireless communication assembly.

Illustratively, in a statistical period, first, the wireless communication components respectively transmit their state identification signals and SAR reduction identifications to the logic gate 1401 via physical connections; then, the logic gate circuit 1401 performs logic and operation on the SAR reduction identifier of each wireless communication component and the level signal corresponding to the SAR reduction identifier to obtain an updated level signal of the wireless communication component; finally, the updated level signal of each wireless communication component is subjected to logic operation to generate a logic operation signal, and the interrupt controller generates an interrupt signal based on the logic operation signal to control the SAR sensor 120 to be turned on or off.

In yet another exemplary embodiment, the wireless communication module 110 may include a plurality of wireless communication components, and the communication terminal 100 includes a plurality of SAR sensors, each of the wireless communication components establishing a physical connection with one of the SAR sensors 120. The sensor chip 130 controls the SAR sensor 120, which establishes a physical connection with the wireless communication component, to be turned on or off based on the status identification signal of the wireless communication component.

Here, the physical connection established between the wireless communication component and the SAR sensor 120 may adopt a specific connection manner of the physical connection in any of the above embodiments, and the sensor chip 130 may adopt a control manner of controlling the SAR sensor 120 to be turned on or off based on the state identification signal of the wireless communication component, as in any of the above embodiments.

Fig. 5 is a flowchart illustrating a communication terminal control method according to an exemplary embodiment, and as shown in fig. 5, the communication terminal control method is applied to the communication terminal according to any of the above embodiments, and the method includes:

step 101: receiving a state identification signal of the wireless communication module through physical connection between the wireless communication module and the sensor chip;

step 102: and controlling the SAR sensor to be switched on or off based on the state identification signal of the wireless communication module.

In another exemplary embodiment, the step 102 includes:

step 1021: performing logic operation on the state identification signal to obtain a logic operation result;

step 1022: and controlling the SAR sensor to be switched on or switched off according to the logical operation result.

In another exemplary embodiment, the logical operation result is a logical operation signal;

the step 1022 includes:

step 10221: generating an interrupt signal based on the logical operation signal;

step 10222: and controlling the sensor to be switched on or off based on the interrupt signal.

In another exemplary embodiment, the step 102 includes:

step 1023: when the state identification signal indicates that the wireless communication module is in a signal transmitting state, the SAR sensor is started;

step 1024: and when the state identification signal indicates that the wireless communication module is not in a signal transmission state, closing the SAR sensor.

In another exemplary embodiment, the step 1021 includes:

step 10211: performing logical or operation on the state identification signal to obtain a logical or operation result, wherein when the state identification signal is at a first level, the state identification signal indicates that the corresponding wireless communication module is in a signal transmission state; when the state identification signal is at a second level, indicating that the corresponding wireless communication module is not in a signal transmission state; the first level is higher than the second level.

Two specific examples are provided below in connection with any of the embodiments described above:

in one implementation of the present disclosure, as shown in fig. 6, a communication terminal includes: a modem subsystem, a wifi subsystem, a Bluetooth subsystem, a sensor processing subsystem and a SAR sensor. The possible firmware (firmware) of the Modem subsystem, the Wifi subsystem and the BT subsystem may be implemented in the same subsystem, or may be implemented in different subsystems, depending on specific implementation manners of different chip platform manufacturers, and the schematic diagram herein separates the Modem, the Wifi and the BT for ease of explanation; SAR sensors generally refer to sensors used for SAR reduction functions. Different chip platform/cell-phone manufacturers' realization is different, some be through the distance sensor detection mobile terminal and human distance realization, some be through capacitanc sensor detection, some can place a plurality of SAR sensors in a plurality of transmitting antenna department, for example SAR sensor is placed to the Modem transmitting antenna, and Wifi, BT transmitting antenna place an SAR sensor respectively. If only one SAR sensor is available, the tx states (namely, signal transmitting states) of all the systems are integrated, and whether the SAR sensor is turned on or not is judged. If a plurality of SAR sensors exist, the tx state of each system respectively controls the SAR sensor corresponding to each system.

The following describes the control flow of the SAR sensor by taking only one SAR sensor as an example:

the RFC driver of A1, each mode (2/3/4/5G) of Modem and Wifi, BT informs the Sensor processing subsystem (Sensor Core) of xx _ tx _ enable (namely, a signal emission state, wherein xx can be 2G, 3G, 4G, 5G, wifi or BT and the like) and xx _ tx _ bypass (namely, SAR identification reduction) of the mode through an inter-Core communication mechanism. If the SAR function is not required to be reduced in the system, setting xx _ tx _ bypass of the system to be 1 during initialization, wherein xx _ tx _ req (namely a signal for controlling the SAR sensor to be turned on or off) of the system is 0, and xx _tx _ req is a signal for controlling the SAR sensor to be turned on no matter what the value of xx _ tx _ enable is.

A2, if the system needs SAR function reduction, setting xx _ tx _ bypass of the system to 0 during initialization, and changing xx _ tx _ req of the system according to xx _ tx _ enable. When the RFC driver configures the radio frequency into tx state, simultaneously informing the Sensor Core that xx _ tx _ enable of the system is 1, and then outputting xx _ tx _ req as 1; when the RFC driver configures the radio frequency state to be a non-tx state such as rx, idle and the like, and also configures xx _ tx _ enable to be 0, the xx _ tx _ req output is 0 at the same time. The logical relationship is as follows:

table 1 correspondence table between control signal and signal transmission state and SAR reduction identification

xx_tx_bypass	xx_tx_enable	xx_tx_req
			1	1	0
1	0	0
			0	1	1
0	0	0

And A3, any one of the plurality of wireless communication subsystems has xx _ tx _ req output of 1, and the total tx _ req output of the plurality of wireless communication subsystems is 1.

A4, when tx _ req is changed from 0- >1, the output of sar _ start is 1; when tx _ req changes from 1- >0, the Sensor Core starts a timer (note 1) of adjustable time, and after the timer times out, the output of sar _ start is 0.

A5, after the SAR _ start is changed, if the SAR _ start is 0, closing the SAR sensor or configuring the SAR sensor into a standby/shutdown mode; if SAR _ start is 1, the SAR sensor is started.

Here, the frequent activation/deactivation of the SAR sensor is prevented by a timer that is adjustable in time. The Timer adopts a 32k low-frequency clock of AON, and the precision of 0.03ms is enough. In addition, the high frequency clock is turned off when the chip enters the sleep state, so that the high frequency clock cannot be used.

In this implementation scheme, a Sensor processing subsystem (Sensor Core, that is, a Sensor chip) is used to logically determine whether the SAR Sensor is turned on or off. Each mode (2/3/4/5G) of the Modem and RFC drivers of Wifi and BT can timely inform a Sensor processing subsystem (Sensor Core) whether the mode is in a signal transmitting state or not (namely whether the mode is in a signal transmitting state or not) through inter-Core communication. The Sensor Core integrates the signal emission states of all systems and judges whether the SAR Sensor is started or not. Here, the inter-core communication mechanism may be a message queue based on a shared memory, or may be implemented in other manners such as based on a mailbox.

In the implementation scheme, the inter-core communication and sensor processing subsystem logic judges the processing flow, and the time consumed by the whole control flow is ms-level.

In another implementation of the present disclosure, a communication terminal includes: the system comprises a modem subsystem, a wifi subsystem, a Bluetooth subsystem, a logic gate circuit, an interrupt controller, a sensor processing subsystem and a SAR sensor.

Fig. 7 shows a specific structure of a logic gate circuit, based on which, the following describes a control flow of a SAR sensor by taking only one SAR sensor as an example:

b1, each system (2/3/4/5G) of a Modem and RFC drivers of Wifi and BT can directly configure corresponding xx _ tx _ enable and xx _ tx _ bypass in a hardware logic gate circuit started by SAR (through accessing a register), wherein the hardware logic gate circuit of the SAR sensor is started to be placed in power domain of an AON (automatic optical network), and the hardware logic gate circuit is firstly powered on after being started, so that the RFC drivers of a wireless communication subsystem can normally access the register of the SAR sensor when being initialized; the hardware logic realizes the judgment of tx detection of tx, wifi and Bluetooth of a plurality of modes of the cellular modem, and if the sar detection of a certain modem mode or wifi and Bluetooth is not required to be supported, the hardware logic can be bypass. If the SAR function of the system is not required to be reduced, setting xx _ tx _ bypass of the system to be 1 during initialization, and setting xx _ tx _ req of the system to be 0 at the moment.

B2, if the system needs SAR reduction, setting xx _ tx _ bypass of the system to 0 during initialization, and changing xx _ tx _ req of the system according to xx _ tx _ enable. When the RFC driver configures the radio frequency into a tx state, the xx _ tx _ enable is also configured to be 1, and the xx _ tx _ req output is 1 at the moment; when the RFC driver configures the radio frequency state to be a non-tx state such as rx, idle and the like, and also configures xx _ tx _ enable to be 0, the xx _ tx _ req output is 0 at the moment.

B3, any one of the various wireless communication subsystems has xx _ tx _ req output of 1, and then tx _ req output of 1.

B4, when tx _ req changes from 0- >1, the output of sar _ start is 1; when tx _ req changes from 1- >0, a timer with adjustable time is started (the phenomenon that the SAR reduction function is frequently started/closed is prevented through the timer with adjustable time), and after the timer is overtime, the output of SAR _ start is 0.

After the SAR _ start changes, sending an interrupt signal to an interrupt controller through an interrupt pin, distributing the interrupt to a Sensor processing subsystem (Sensor Core, in order to shorten the time of the whole control flow, the interrupt is separated to the Sensor Core instead of an AP, and the Sensor Core directly controls the SAR Sensor), and after receiving the interrupt, if the SAR _ start is 0, closing the SAR Sensor or configuring the SAR Sensor into a standby/shutdown mode; if SAR _ start is 1, the SAR sensor is started.

In the implementation scheme, the logic gate circuit is used for realizing the logic judgment of the on or off of the SAR sensor, and the software judgment processing is realized through hardware logic, so that the time delay of opening the SAR sensor can be shortened to achieve the us level.

In summary, the present disclosure determines whether one or more antennas (equivalent to a wireless communication module) of the communication terminal are transmitting signals (i.e., are in a signal transmission state), and if so, turns on the SAR sensor; and if the SAR sensor is not in the signal transmission state, the SAR sensor is turned off.

Here, turning off the SAR sensor means configuring the SAR sensor in a standby/shutdown mode, where the power consumption of the SAR sensor is about 1 uA; turning on the SAR sensor means configuring the SAR sensor into a working mode, and the power consumption is about 1mA according to different working modes, working time and working cycles.

Therefore, according to the method, the SAR sensor is controlled to be turned on or off according to whether the wireless communication module is in a signal emission state or not, the standby power consumption of the communication terminal can be effectively reduced (the reduced power consumption mainly comprises the power consumption of the AP subsystem, the sensor processing subsystem and the SAR sensor, and the standby power consumption is reduced slightly differently according to different chip platforms and different ddr mem sizes), and the reduced power consumption is about 2mA approximately and accounts for about 30% of the original standby power consumption.

With regard to the communication terminal in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated herein.

In an exemplary embodiment, the wireless communication module 110, the sensor chip 130, the SAR sensor 120, and the like may be implemented by one or more Central Processing Units (CPUs), graphics Processing Units (GPUs), baseband Processors (BPs), application Specific Integrated Circuits (ASICs), DSPs, programmable Logic Devices (PLDs), complex Programmable Logic Devices (CPLDs), field Programmable Gate Arrays (FPGAs), general purpose processors (GPUs), controllers, micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components.

Fig. 8 is a block diagram of a communication terminal 100 shown in accordance with an example embodiment. For example, the communication terminal 100 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

Referring to fig. 8, the communication terminal 100 may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communications component 816.

The processing component 802 generally controls overall operation of the communication terminal 100, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the communication terminal 100. Examples of such data include instructions for any application or method operating on the communication terminal 100, contact data, phonebook data, messages, pictures, videos, and the like. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power components 806 provide power to the various components of the communication terminal 100. The power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the communication terminal 100.

The multimedia component 808 includes a screen providing an output interface between the communication terminal 100 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the communication terminal 100 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 810 is configured to output and/or input audio signals. For example, audio component 810 includes a Microphone (MIC) configured to receive external audio signals when communication terminal 100 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the communication terminal 100. For example, the sensor assembly 814 may detect an open/closed state of the communication terminal 100, the relative positioning of components, such as a display and keypad of the communication terminal 100, the sensor assembly 814 may detect a change in the position of the communication terminal 100 or a component of the communication terminal 100, the presence or absence of user contact with the communication terminal 100, orientation or acceleration/deceleration of the communication terminal 100, and a change in the temperature of the communication terminal 100. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communications between the communication terminal 100 and other devices in a wired or wireless manner. The communication terminal 100 may access a wireless network based on a communication standard, such as WiFi,4G or 5G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the communication terminal 100 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the communication terminal 100 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Other embodiments of the disclosed embodiments will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the embodiments of the disclosure following, in general, the principles of the embodiments of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the embodiments of the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosed embodiments being indicated by the following claims.

It is to be understood that the disclosed embodiments are not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the embodiments of the present disclosure is limited only by the appended claims.

Claims

1. A communication terminal, comprising:

and the sensor chip is respectively in physical connection with the wireless communication module and the SAR sensor and is used for controlling the SAR sensor to be turned on or off based on the state identification signal received from the wireless communication module.

2. The communication terminal of claim 1,

the physical connection comprises a direct connection between the sensor chip and the wireless communication module;

the sensor chip is used for receiving the state identification signal of the wireless communication module through the direct connection, performing logic operation on the state identification signal, and controlling the SAR sensor to be turned on or turned off according to a logic operation result.

3. The communication terminal according to claim 1, wherein the communication terminal further comprises:

the sensor chip controls the SAR sensor to be turned on or off based on the interrupt signal.

4. The communication terminal of any of claims 1 to 3, wherein the state identification signal is a GPIO signal output by a basic input output (GPIO) pin of the wireless communication module.

5. The communication terminal according to any of claims 1 to 3, wherein the physical connection is established between an interrupt pin of the sensor chip and the wireless communication module.

6. The communication terminal according to any one of claims 1 to 3, wherein the sensor chip is configured to turn on the SAR sensor when the status identification signal indicates that the wireless communication module is in a signal transmission status; and when the state identification signal indicates that the wireless communication module is not in a signal transmission state, closing the SAR sensor.

7. The communication terminal of claim 3, wherein the wireless communication module comprises at least one of:

a radio frequency chip driver of a modem for cellular mobile communications;

a wireless communication chip driver for bluetooth communication;

a wireless communication chip driver for WiFi communication;

a wireless communication chip driver for UWB communication.

8. The communication terminal according to claim 7, wherein the logic gate circuit comprises a logic or gate, an input terminal of the logic or gate is connected to an output terminal of a radio frequency chip driver of a modem for the cellular mobile communication, a wireless communication chip driver for the bluetooth communication, a wireless communication chip driver for the WiFi communication, and/or a wireless communication chip driver for the UWB communication;

the logic or gate is used for receiving the state identification signal of the wireless frequency chip driver of the modem for cellular mobile communication, the wireless communication chip driver for bluetooth communication, the wireless communication chip driver for WiFi communication and/or the wireless communication chip driver for UWB communication, and performing logic or operation on the state identification signal to obtain the logic operation signal, wherein when the state identification signal is at a first level, the logic or gate indicates that the corresponding wireless communication module is in a signal transmission state; when the state identification signal is at a second level, indicating that the corresponding wireless communication module is not in a signal transmission state; the first level is higher than the second level.

9. A communication terminal control method applied to the communication terminal according to any one of claims 1 to 8, the method comprising:

10. The method of claim 9, wherein controlling the SAR sensor to be turned on or off based on the status identification signal of the wireless communication module comprises:

11. The method of claim 10, wherein the logical operation result is a logical operation signal;

generating an interrupt signal based on the logical operation signal;

12. The method of claim 9, wherein controlling the SAR sensor to be turned on or off based on the status identification signal of the wireless communication module comprises:

when the state identification signal indicates that the wireless communication module is in a signal transmitting state, the SAR sensor is started;

13. The method of claim 10, wherein performing the logical operation on the status identification signal to obtain a logical operation result comprises: