CN115633394B

CN115633394B - Power control method and related equipment

Info

Publication number: CN115633394B
Application number: CN202210169777.5A
Authority: CN
Inventors: 于春梅; 包枫楷
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2023-09-05
Anticipated expiration: 2042-02-23
Also published as: CN115633394A

Abstract

The application provides a power control method and related equipment. The power control method can be applied to an electronic device. According to the power control method, the electronic device can acquire average transmitting power, if the average power is larger than a first threshold value, the electronic device can start a first impedance network, linearly attenuate the transmitting power according to a preset attenuation value, and attenuate the transmitting power after the linear attenuation based on a clock signal. If the average power is smaller than the second threshold, the electronic device may turn on the second impedance network, and increase the transmission power linearly according to a preset increase value. In this way, under the condition that the transmitting power is too high or too low, the electronic equipment can adjust the transmitting power, thereby not only meeting the electromagnetic radiation safety standard, but also guaranteeing the communication quality, namely guaranteeing the communication experience of users.

Description

Power control method and related equipment

Technical Field

The present application relates to the field of terminal technologies, and in particular, to a power control method and related devices.

Background

With the continuous development of wireless communication devices represented by smart phones, the influence of electromagnetic radiation generated during the use of the devices on human health is also receiving public attention. In order to ensure the operational safety of wireless communication devices and to maintain the personal benefits of a wide range of users, the government authorities and related telecommunication regulatory bodies of each country make clear regulations: the electromagnetic radiation has to meet the safety standard to be put into use.

In one aspect, since electromagnetic radiation is closely related to the transmit power of a wireless communication device, the electromagnetic radiation generated by the wireless communication device can be controlled by controlling its transmit power. Generally, when the transmit power of a wireless communication device is reduced, the electromagnetic radiation generated by the wireless communication device is correspondingly reduced. On the other hand, the transmission power of the wireless communication device affects the communication quality of the user. In general, when the transmission power of a wireless communication device is reduced, the communication quality of a user may be deteriorated.

Therefore, how to make electromagnetic radiation meet the security standard while ensuring the communication quality of users is a problem to be solved.

Disclosure of Invention

The application provides a power control method and related equipment. According to the method, the electronic device can attenuate the transmission power according to the first impedance network and the clock signal when the average transmission power is greater than a first threshold value, and can boost the transmission power according to the second impedance network when the average transmission power is less than a second threshold value. The method can realize dynamic power control, and ensures that the electronic radiation meets the safety standard under the condition of ensuring the communication quality of users.

In a first aspect, the present application provides a power control method. The method can be applied to an electronic device. The method may include: obtaining average transmitting power; the average transmitting power is the average value of the transmitting power of the transmitting signal in a certain time; if the average transmitting power is larger than the first threshold value, a first impedance network is started to linearly attenuate the transmitting power according to a preset attenuation value, and the transmitting power after the linear attenuation is attenuated again based on a clock signal; wherein, in a time period, the high level duration of the clock signal is less than the low level duration.

In the scheme provided by the application, the electronic equipment can attenuate the transmitting power through the first impedance network and the clock signal under the condition that the average transmitting power is higher (namely, greater than the first threshold value). The first impedance network is used for attenuating the transmitting power according to a preset attenuation value. The attenuation of the transmit power by the clock signal is related to the duration of the high and low levels in one period of time. And, in one time period, the high level duration of the clock signal is smaller than the low level duration. By the method, under the condition of higher transmitting power, the electronic equipment can attenuate the transmitting power, so that the transmitting power can meet the electromagnetic radiation safety standard and the communication quality of users.

In some embodiments of the application, the electronic device may attenuate the transmit power if the clock signal is in a low state.

With reference to the first aspect, in a possible implementation manner of the first aspect, after the obtaining an average transmit power, the method further includes: if the average transmitting power is smaller than the second threshold value, a second impedance network is started, and the transmitting power is increased through the second impedance network; the second impedance network is used for linearly increasing the transmitting power according to a preset increasing value; the second threshold is less than the first threshold.

In the scheme provided by the application, the electronic equipment can boost the transmitting power through the second impedance network under the condition that the average transmitting power is lower (namely smaller than the first threshold value). By this method, the electronic device can dynamically adjust the transmit power. I.e. in case the transmit power is higher or lower, the electronic device may adjust the power to a more stable state. The method means that the transmitting power of the electronic equipment can meet the electromagnetic radiation safety standard and the communication quality of users, can be kept in a stable state as much as possible in the adjustment process, and ensures stable transmission of signals.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first impedance network is a T-type or pi-type network composed of a plurality of adjustable resistors.

In the scheme provided by the application, the first impedance network can be a T-type network or a pi-type network, and the T-type network or the pi-type network can comprise an adjustable resistor. The resistance of the adjustable resistor changes, and the attenuation which can be realized by the T-type or pi-type network also changes. That is, the first impedance network may achieve different levels of attenuation of the transmit power.

With reference to the first aspect, in a possible implementation manner of the first aspect, before the turning on the second impedance network, the method further includes: and adjusting the resistance values of the adjustable resistors in the first impedance network to obtain the second impedance network.

In the scheme provided by the application, the second impedance network can be a T-type network or a pi-type network which consists of a plurality of adjustable resistors. The electronic device may implement a transition between the first impedance network and the second impedance network by adjusting the resistance value of the adjustable resistor.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first impedance network includes an adjustable resistor R1, an adjustable resistor R2, and an adjustable resistor R3; one side of the adjustable resistor R1 is connected with the input end of the emission signal and the adjustable resistor R2, and the other side is connected with the output end of the emission signal and the adjustable resistor R3; the adjustable resistor R2 and the adjustable resistor R3 are not connected with one side of the R1 and grounded.

In the scheme provided by the application, the first impedance network can be a pi-type network consisting of three adjustable resistors. That is, the electronic apparatus can realize attenuation of the transmission power by a simple device.

With reference to the first aspect, in a possible implementation manner of the first aspect, the attenuating, based on the clock signal, the transmission power after being linearly attenuated further includes: and after the transmission signal is transmitted to the first impedance network and the duplexer, the transmission power of the transmission signal subjected to linear attenuation is attenuated according to the clock signal.

In the scheme provided by the application, under the condition of starting the first impedance network, the transmitting signal in the electronic equipment is firstly transmitted to the first impedance network, then transmitted to the duplexer, and attenuated by the clock signal after passing through the duplexer.

With reference to the first aspect, in a possible implementation manner of the first aspect, the attenuating, based on the clock signal, the transmission power after being linearly attenuated further includes: and attenuating the transmission power after the linear attenuation according to the power correspondingly set when the clock signal is at the high level, the power correspondingly set when the clock signal is at the low level and the duty ratio of the high level duration time in one time period of the clock signal.

With reference to the first aspect, in a possible implementation manner of the first aspect, the clock signal is a rectangular wave, and in a period of time, a high level duration of the clock signal is t/8; and t is the time period of the clock signal.

In the scheme provided by the application, in one time period, the high level duration of the clock signal is 1/8 time period, so that the transmitting power is not in a relatively low state for a long time, the communication quality is not poor, and the attenuation effect is also realized.

In a second aspect, the present application provides an electronic device. The electronic device includes a display screen, a memory, and one or more processors. Wherein the memory is for storing a computer program and the processor is for invoking the computer program to cause the electronic device to perform: obtaining average transmitting power; the average transmitting power is the average value of the transmitting power of the transmitting signal in a certain time; if the average transmitting power is larger than the first threshold value, a first impedance network is started to linearly attenuate the transmitting power according to a preset attenuation value, and the transmitting power after the linear attenuation is attenuated again based on a clock signal; wherein, in a time period, the high level duration of the clock signal is less than the low level duration.

With reference to the second aspect, in a possible implementation manner of the second aspect, after the obtaining average transmit power, the processor is further configured to: if the average transmitting power is smaller than the second threshold value, a second impedance network is started, and the transmitting power is increased through the second impedance network; the second impedance network is used for linearly increasing the transmitting power according to a preset increasing value; the second threshold is less than the first threshold.

With reference to the second aspect, in a possible implementation manner of the second aspect, the first impedance network is a T-type or pi-type network composed of a plurality of adjustable resistors.

With reference to the second aspect, in a possible implementation manner of the second aspect, before the processor is configured to turn on the second impedance network, the processor is further configured to: and adjusting the resistance values of the adjustable resistors in the first impedance network to obtain the second impedance network.

With reference to the second aspect, in a possible implementation manner of the second aspect, the first impedance network includes an adjustable resistor R1, an adjustable resistor R2, and an adjustable resistor R3; one side of the adjustable resistor R1 is connected with the input end of the emission signal and the adjustable resistor R2, and the other side is connected with the output end of the emission signal and the adjustable resistor R3; the adjustable resistor R2 and the adjustable resistor R3 are not connected with one side of the R1 and grounded.

With reference to the second aspect, in a possible implementation manner of the second aspect, the processor is configured to, when the linearly attenuated transmit power is further attenuated based on the clock signal, specifically: and after the transmission signal is transmitted to the first impedance network and the duplexer, the transmission power of the transmission signal subjected to linear attenuation is attenuated according to the clock signal.

With reference to the second aspect, in a possible implementation manner of the second aspect, the processor is configured to, when the linearly attenuated transmit power is further attenuated based on the clock signal, specifically: and attenuating the transmission power after the linear attenuation according to the power correspondingly set when the clock signal is at the high level, the power correspondingly set when the clock signal is at the low level and the duty ratio of the high level duration time in one time period of the clock signal.

With reference to the second aspect, in a possible implementation manner of the second aspect, the clock signal is a rectangular wave, and in a period of time, a high level duration of the clock signal is t/8; and t is the time period of the clock signal.

In a third aspect, the application provides a computer storage medium comprising instructions which, when run on an electronic device, cause the electronic device to perform any one of the possible implementations of the first aspect.

In a fourth aspect, embodiments of the present application provide a chip for application to an electronic device, the chip comprising one or more processors for invoking computer instructions to cause the electronic device to perform any of the possible implementations of the first aspect.

In a fifth aspect, embodiments of the present application provide a computer program product comprising instructions which, when run on an electronic device, cause the electronic device to perform any one of the possible implementations of the first aspect described above.

It will be appreciated that the electronic device provided in the second aspect, the computer storage medium provided in the third aspect, the chip provided in the fourth aspect, and the computer program product provided in the fifth aspect are configured to perform any one of the possible implementations of the first aspect. Thus, reference may be made to the advantages of any one of the possible implementation manners of the first aspect, and the description is omitted here.

Drawings

Fig. 1 is a schematic diagram of a power control scenario provided in an embodiment of the present application;

fig. 2a is a waveform diagram of a transmitting power according to an embodiment of the present application;

FIG. 2b is a waveform diagram of another transmit power provided by an embodiment of the present application;

fig. 3 is a flowchart of a power control method according to an embodiment of the present application;

FIG. 4 is a schematic diagram of an attenuation network according to an embodiment of the present application;

FIG. 5 is a schematic diagram of yet another attenuation network according to an embodiment of the present application;

fig. 6 is a schematic diagram of a radio frequency module according to an embodiment of the present application;

FIG. 7 is a waveform diagram of a clock signal according to an embodiment of the present application;

fig. 8 is a waveform diagram of another transmission power according to an embodiment of the present application;

fig. 9 is a waveform diagram of an average transmit power according to an embodiment of the present application;

fig. 10 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application;

fig. 11 is a schematic software structure of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Wherein, in the description of the embodiments of the present application, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and furthermore, in the description of the embodiments of the present application, "plural" means two or more than two.

It should be understood that the terms first, second, and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.

Today, wireless communication devices such as smartphones play an indispensable role in the life of people. Since these wireless communication devices are transmission/reception carriers of wireless signals, electromagnetic radiation generated by them has received a lot of attention. As shown in fig. 1, a user may transmit and receive signals during a process of surfing the internet or talking using a wireless communication device such as a smart phone. During this process, these wireless communication devices may generate electromagnetic radiation.

Currently, many equipment manufacturers measure the influence of electromagnetic radiation on human bodies through SAR, and related departments also control the radiation safety of wireless communication equipment according to SAR. The wireless communication device needs to pass the SAR test, that is, the SAR value of the wireless communication device needs to meet the security standard, so that the wireless communication device can be widely applied.

The English of SAR is generally called Specific Absorption Rate, chinese is generally called electromagnetic wave absorption ratio or specific absorption rate, and is the electromagnetic wave energy absorption ratio of wireless products such as mobile phones and the like. Because the human body generates an induction electromagnetic field under the action of an external electromagnetic field, and various organs of the human body are all consumable mediums, the internal electromagnetic field generates induction current, so that electromagnetic energy is absorbed and dissipated, and SAR is commonly used in biometry to characterize the physical process. Generally speaking, SAR refers to the electromagnetic wave power absorbed or consumed by a unit mass of human tissue per unit time in watts per kilogram (W/kg), or equivalently milliwatts per gram (mW/g).

In addition, the SAR value is closely related to the transmit power of the wireless communication device. It is understood that the transmit power of a wireless communication device refers to the power of its transmitted signal. As shown in fig. 2a, the transmit power of the wireless communication device is ideally constant. In this case, if the SAR value corresponding to the constant transmission power of the wireless communication device meets the safety standard, electromagnetic radiation generated by the wireless communication device during communication always meets the safety standard. However, as shown in fig. 2b, in actual situations, the transmission power of the wireless communication device is not constant and may be affected by various factors (e.g., the distance between the wireless communication device and the base station, the base station distribution, interference from other devices, etc.). In this case, if the transmission power of the wireless communication device fluctuates upward, the corresponding SAR value may not meet the security standard.

Under the condition that the transmitting power of the wireless communication equipment fluctuates upwards and the corresponding SAR value is about to exceed the standard value, if the transmitting power is reduced by a certain value, the reduced transmitting power may be too low, so that the communication quality is poor, the reduced transmitting power may still be at a higher level, and the electromagnetic radiation still does not meet the safety standard. That is, the above manner is likely to fail to meet the adjustment requirement of the transmission power.

Therefore, the technician needs to consider whether the SAR value of the wireless communication device meets the safety standard, adjust the transmission power, and also consider whether the adjusted transmission power can meet the communication requirement of the user.

The application provides a power control method and related equipment. According to the power control method, the electronic device may obtain an average power of the transmission signal, i.e., an average transmission power, and compare the average transmission power with a first threshold. In the case that the average transmit power is greater than the first threshold, the electronic device may turn on the first impedance network to linearly attenuate the transmit power, and further attenuate the linearly attenuated transmit power by the clock signal. And under the condition that the average power is smaller than a second threshold value, the electronic equipment can start the second impedance network and linearly increase the transmitting power according to a preset increasing value. By the method, the communication quality of the user can be ensured, and the SAR value in the using process of the electronic equipment can meet the safety standard.

A power control method provided by an embodiment of the present application is described below with reference to fig. 3.

S301: the electronic device obtains an average transmit power.

It is understood that the electronic device may obtain the average transmit power. The average transmitting power is the average value of the transmitting power of the transmitting signal in a certain time.

In some embodiments of the application, the electronic device includes a port and pin for power detection through which the electronic device can read the average transmit power of the transmit signal.

In some embodiments of the application, the electronic device may obtain the average power of the transmitted signal through a coupler or modem.

S302: if the average transmission power is greater than the first threshold, the electronic device starts the first impedance network to linearly attenuate the transmission power according to a preset attenuation value, and attenuates the transmission power after the linear attenuation based on the clock signal.

Specifically, when the average transmission power of the transmission signal is greater than the first threshold, the electronic device may turn on the first impedance network to linearly attenuate the transmission power according to a preset attenuation value, and further attenuate the transmission power after the linear attenuation based on the clock signal. It is understood that the high level duration of the clock signal is less than the low level duration during one time period of the clock signal.

In some embodiments of the application, the transmit power is the instantaneous power of the transmit signal. The average power of the transmitted signal is the average value of the transmitted power over a certain period of time. For example, an average value of the transmission power within 1 second(s).

In some embodiments of the present application, the electronic device may compare the average transmit power of the transmit signal with the first threshold value and determine whether to attenuate the transmit power according to the comparison result before performing step S102.

It should be noted that the first threshold may be set based on SAR safety standards. According to the above, there is a correspondence between the SAR value and the transmission power of the electronic device. In some embodiments of the application, the electronic device may determine the threshold value of the transmit power, i.e. the first threshold value, according to SAR safety standards. It is understood that the transmit power referred to in the present application is the power of the transmit signal of the electronic device.

In some embodiments of the application, the first impedance network may be a T-type network or pi-type network consisting of a plurality of adjustable resistors.

Exemplary, as shown in fig. 4, a first impedance network provided in an embodiment of the present application is a pi-type attenuation network. The attenuation network consists of three adjustable resistors R1, R2 and R3. Specifically, one side of R1 is connected to the input end of the emission signal and R2, the other side is connected to the output end of the emission signal and the adjustable resistor R3, and one side of R2 and R3, which is not connected to R1, is grounded. When the resistance values of R1, R2 and R3 are changed, the attenuation values of signals which can be realized by the attenuation network are correspondingly changed. It can be appreciated that the electronic device may store the attenuation values achievable by the attenuation network, and the resistance value of R1, the resistance value of R2, and the resistance value of R3 corresponding to the attenuation values. That is, the electronic device may store a plurality of resistance combinations of R1, R2, and R3, and attenuation values corresponding to the different resistance combinations. Under the condition that the average power of the transmitted signal is larger than a first threshold value, the electronic equipment can start an attenuation network, and can search the resistance values of corresponding R1, R2 and R3 according to a preset attenuation value, and adjust the resistance values of R1, R2 and R3 to the resistance values searched according to the preset attenuation value, so that the attenuation network can attenuate the instantaneous power of the transmitted signal by the preset attenuation value.

In some embodiments of the present application, the first impedance network may be connected to the transmit signal input module and the transmit signal output module, respectively. Under the condition that the first impedance network is started, a transmitting signal of the electronic equipment is transmitted to the first impedance network for attenuation through the transmitting signal input module and then transmitted to the transmitting signal output module. And under the condition that the first impedance network is closed, the transmission signal of the electronic equipment can be directly transmitted to the transmission signal output module by the transmission signal input module. In this case, the transmitted signal does not pass through the first impedance network, which means that the transmitted signal is not attenuated by the first impedance network.

Exemplary, as shown in fig. 5, a first impedance network provided by an embodiment of the present application is a pi-type attenuation network. The attenuation network consists of three adjustable resistors R1, R2 and R3, wherein two sides of R1 are respectively connected with a transmitting signal input module and a transmitting signal output module. The transmit signal input module includes a radio frequency port RF1 and a radio frequency port RF2. The transmission signal output module includes a radio frequency port RF3 and a radio frequency port RF4. The transmission signal input module and the transmission signal output module are connected through a radio frequency port RF1 and a radio frequency port RF 3. Under the condition that the attenuation network is started, the transmitting signal of the electronic equipment is transmitted to the transmitting signal input module, is transmitted to the attenuation network through the radio frequency port RF2 of the transmitting signal input module, is transmitted to the transmitting signal output module through the radio frequency port RF4, and is transmitted to the duplexer after being output from the transmitting signal output module. In the case that the attenuation network is closed, the transmission signal of the electronic device can be directly transmitted to the radio frequency port RF3 through the radio frequency port RF1 after being transmitted to the transmission signal input module, without passing through the attenuation network. It will be appreciated that the transmit signal input module shown in fig. 5 is the transmit signal input terminal mentioned above, and the transmit signal output module is the transmit signal output terminal mentioned above.

It is understood that the diplexer is used to isolate the transmit signal and the receive signal of the electronic device, avoiding the transmit signal and the receive signal from affecting each other.

In some embodiments of the application, the first impedance network is located in a radio frequency module of the electronic device.

As shown in fig. 6, fig. 6 is a schematic structural diagram of a radio frequency module of an electronic device according to an embodiment of the present application, where the radio frequency module may transmit/receive signals and process the signals. When the radio frequency module is used for receiving signals, an antenna in the radio frequency module can receive electromagnetic waves sent by the base station and convert the electromagnetic waves into electric signals, and after operations such as amplification, filtering and the like, baseband signals are obtained and then sent to other modules for further processing. When the radio frequency module is used for transmitting signals, the radio frequency module can amplify and filter baseband signals and obtain transmitting signals in a radio frequency band. The transmit signal is transmitted to a transmit signal input module. When the first impedance network is not started, the transmitting signal is directly transmitted from the transmitting signal input module to the transmitting signal output module, passes through the duplexer and is transmitted by the antenna.

It should be noted that, in some embodiments of the present application, there is no transmission signal input module and no transmission signal output module that are specifically provided in the electronic device, but the on/off of the first impedance network is implemented by other devices (e.g., a switch, etc.), and the transmission of the transmission signal is controlled.

It is further noted that the attenuation of the transmitted signal by the first impedance network in the electronic device is a linear attenuation, rather than a preset attenuation value of the instantaneous power of the transmitted signal immediately after the first impedance network is turned on. It will be appreciated that the degree of linear attenuation (i.e., the coefficient of linear attenuation) is related to the device used by the first impedance network (e.g., the adjustable resistance included in the first impedance network). The skilled person can determine the degree of linear attenuation according to the actual requirements and thus select the corresponding device.

In some embodiments of the application, the electronic device may adjust the preset attenuation value according to the communication quality. Under the condition of higher communication quality, the electronic equipment can increase the preset attenuation value, so that the transmitted signal is attenuated more. Under the condition of lower communication quality, the electronic equipment can reduce the preset attenuation value, so that the transmitted signal is attenuated less, and the influence on normal communication of a user is avoided.

It is understood that the communication quality mentioned in the present application may refer to signal strength, and may further include information such as delay, signal to noise ratio, cell bandwidth capacity, packet loss rate, and network load.

In some embodiments of the present application, the electronic device may adjust the preset attenuation value according to the historical attenuation result. For example, the electronic device may compare the average power obtained after the last time the decay was completed with a preset threshold. If the average power is less than a preset threshold, the electronic device may decrease the preset attenuation value; if the average power is greater than a preset threshold, the electronic device may increase the preset attenuation value.

It is understood that the preset threshold may be set according to actual requirements, which is not limited by the present application.

It is understood that the electronic device may attenuate the transmit power by a clock signal. Specifically, the electronic device may attenuate the transmit power according to a power corresponding to the clock signal when at a high level, a power corresponding to the clock signal when at a low level, and a duty cycle of a high level duration within a time period of the clock signal.

In some embodiments of the application, the difference between the correspondingly set power at high level and the correspondingly set power at low level is 3dB-9dB.

In some embodiments of the present application, the electronic device may determine a difference between the power and the transmit power that are correspondingly set when at a high level (power-transmit power that are correspondingly set when at a high level), and determine a difference between the power and the transmit power that are correspondingly set when at a low level (power-transmit power that are correspondingly set when at a low level). The electronic device may use the duty ratio of the high level duration in one time period of the clock signal as the weight of the two differences, and the value obtained by weighting the two differences is the attenuation value of the transmitting power.

After attenuation for a plurality of time periods, the attenuated transmission power is close to the power set correspondingly when the transmission power is at the low level.

According to the above, the high level duration of the clock signal is smaller than the low level duration, so that the clock signal can be kept in the low level state for a large part of the period of acquiring the average power, thereby reducing the average power of the transmission signal. Under the condition, the attenuation of the first impedance network to the transmitting power and the attenuation of the clock signal to the transmitting signal can be overlapped, so that the dynamic adjustment to the transmitting power is realized, the SAR value meets the safety standard, namely the radio frequency index compliance, and meanwhile, the signal disconnection time length can be controlled, so that the communication requirement of a user is met, and the wireless communication performance of the user is ensured.

In some embodiments of the application, the clock signal is a rectangular wave. The high level of the clock signal has a duration of t/8 during one time period of the clock signal. t is the time period of the clock signal. For example, as shown in fig. 7, the clock signal may be a square wave with a time period of 32.4 ms.

In some embodiments of the application, the low level duration of the clock signal is 32ms during one period of the clock signal.

It will be appreciated that the high level duration and the low level duration may also be set according to actual requirements during a time period of the clock signal, which is not limited by the present application.

In some embodiments of the application, the clock signal is a signal that the electronic device emulates by software.

In some embodiments of the application, the electronic device may simulate a clock signal after the transmit signal is transmitted to the diplexer and before being transmitted by the antenna, and re-attenuate the transmit power that has been linearly attenuated by the clock signal.

In some embodiments of the application, the electronic device may adjust the high and low level durations of the clock signal based on the historical decay results. For example, the electronic device may compare the average power obtained last time the attenuation was completed according to the first impedance network and the clock signal to a preset threshold. If the average power is less than a preset threshold, the electronic device may increase the high level duration; if the average power is greater than a predetermined threshold, the electronic device may shorten the low-level duration.

It is understood that the electronic device does not generate a clock signal in the event that the average power of the transmitted signal is not greater than the first threshold.

S303: if the average transmitting power is smaller than the second threshold value, the electronic equipment starts a second impedance network and increases the transmitting power through the second impedance network.

Specifically, in a case where the average transmission power of the transmission signal is smaller than the second threshold value, the electronic device may turn on the second impedance network and increase the transmission power through the second impedance network. Wherein the second impedance network may be configured to linearly increase the transmit power according to a preset increase value.

In some embodiments of the present application, before performing step S303, the electronic device may further compare the average transmission power of the transmission signal with the second threshold, and determine whether to increase the transmission power according to the comparison result.

The second threshold value is smaller than the first threshold value. In addition, the second threshold may be set according to the communication requirements. The second threshold may be set, for example, based on the minimum transmit power that the user communication needs to meet. In some embodiments of the application, the second threshold is slightly higher than the minimum transmit power required for communication. Of course, the second threshold may also be set according to other factors, which the present application is not limited to.

In some embodiments of the application, the first impedance network and the second impedance network may be mutually switched. Specifically, the electronic device may adjust parameters of devices in the first impedance network, thereby obtaining the second impedance network. Similarly, the electronic device may also adjust parameters of devices in the first impedance network to obtain the first impedance network.

According to the above, the first impedance network may be a T-type network or pi-type network consisting of a plurality of adjustable resistors. Similarly, the second impedance network may also be a T-type network or pi-type network consisting of a plurality of adjustable resistors. It is understood that the electronic device may include a T-network or pi-network composed of a plurality of adjustable resistors, and the electronic device may adjust the resistance of the adjustable resistors in the T-network or pi-network, thereby implementing linear attenuation or linear boost of the transmit power.

Illustratively, the first impedance network as shown in FIG. 4 includes adjustable resistors R1, R2, and R3. After the electronic device adjusts the resistance values of R1, R2, and R3, the first impedance network may be converted into a second impedance network, and the transmission power may be linearly increased through the second impedance network. The electronic device may store an increase value achievable by the second impedance network, and a resistance value of R1, a resistance value of R2, and a resistance value of R3 corresponding to the increase value. Under the condition that the average transmitting power of the transmitting signal is smaller than a second threshold value, the electronic equipment can start the second impedance network, and can search the corresponding resistance values of R1, R2 and R3 according to the preset increasing value, and adjust the resistance values of R1, R2 and R3 to the resistance values searched according to the preset increasing value, so that the second impedance network can increase the transmitting power according to the preset increasing value.

It will be appreciated that the relevant description of the T-type network or pi-type network may be referred to above and will not be repeated here.

It is understood that the electronic device may linearly attenuate or linearly increase the transmit power through a T-network or pi-network. An exemplary illustration is provided below in connection with fig. 8.

It can be understood that fig. 8 is a waveform diagram of the transmit power provided in an embodiment of the present application. As shown in fig. 8, when the abscissa is 0, the average transmission power acquired by the electronic device is greater than the first threshold, the electronic device may start the first impedance network, and perform a first attenuation on the transmission power, that is, perform a linear attenuation on the transmission power according to a preset attenuation value. After 1s, that is, when the abscissa is 1, the average transmitting power obtained by the electronic device is smaller than the second threshold, the electronic device can adjust the resistance value of the adjustable resistor in the first impedance network to obtain a second impedance network, and under the condition of starting the second impedance network, the transmitting power is linearly increased according to the preset increasing value.

In some embodiments of the present application, the electronic device first determines that the average transmit power is greater than a first threshold, turns on a first impedance network, and attenuates the transmit power through the first impedance network and a clock signal. In the subsequent process, the electronic device determines that the average transmit power is less than the second threshold. In this case, the electronic device does not shut down the first impedance network, but stops the analog clock signal and adjusts parameters of devices included in the first impedance network to obtain a second impedance network, thereby increasing the transmission power through the second impedance network. It can be appreciated that in the above procedure, the time for the electronic device to compare the average transmit power with the first threshold twice is different.

Fig. 9 is a waveform diagram of an average transmit power according to an embodiment of the present application. As shown in fig. 9, when the abscissa is 0, the average transmission power is greater than the first threshold, the electronic device may turn on the first impedance network to linearly attenuate the transmission power, and further attenuate the transmission power after the linear attenuation based on the clock signal. After 1s, i.e. when the abscissa is 1, the electronic device detects that the current average transmitting power is smaller than the second threshold value, and the electronic device does not simulate clock signals any more, but adjusts the device parameters in the first impedance network, so as to obtain a second impedance network, and the transmitting power is increased through the second impedance network. At the 2 nd s, the electronic device detects that the current average transmission power is greater than the first threshold again, and starts to attenuate the transmission power (refer to the foregoing for details, and are not repeated here). At 3s, the electronic device detects that the current average transmit power is less than the second threshold, and increases the transmit power through the second impedance network. And at 4s, the electronic device detects that the current average transmission power is between the first threshold value and the second threshold value, and closes the second impedance network. It should be noted that the amount of attenuation achievable by the first impedance network and the amount of increase achievable by the second impedance network may not be the same over different time periods.

In some embodiments of the present application, the electronic device first determines that the average transmit power is greater than a first threshold, turns on a first impedance network, and attenuates the transmit power through the first impedance network and a clock signal. In the subsequent process, the electronic device determines that the average transmission power is not less than the second threshold. In this case, the electronic device turns off the first impedance network and stops the analog clock signal. It can be appreciated that in the above procedure, the time for the electronic device to compare the average transmit power with the first threshold twice is different.

According to the above, in some embodiments of the present application, the electronic device may compare the average transmission power with the first threshold value, and may also compare the average transmission power with the second threshold value, and the present application is not limited to the order of the two comparisons.

In some embodiments of the present application, the electronic device may obtain the instantaneous power of the transmitted signal at the current time slot of the current frame and compare the instantaneous power to a third threshold and a fourth threshold, respectively. In the event that the instantaneous power is greater than the third threshold, the electronic device attenuates the instantaneous power of the next frame signal. In the event that the instantaneous power is less than the fourth threshold, the electronic device increases the instantaneous power of the next frame signal.

It will be appreciated that the third threshold and the fourth threshold may be set according to actual needs, and the present application is not limited thereto.

The following describes the apparatus according to the embodiment of the present application.

Fig. 10 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application. The above-mentioned electronic device may be the electronic device 100 shown in fig. 10.

The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (Universal Serial Bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, keys 190, a motor 191, an indicator 192, a camera 193, a display 194, and a subscriber identity module (Subscriber Identification Module, SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

It should be understood that the illustrated structure of the embodiment of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments of the application, electronic device 100 may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 110 may include one or more processing units. Wherein the different processing units may be separate devices or may be integrated in one or more processors.

A memory may also be provided in the processor 110 for storing instructions and data.

In some embodiments, the processor 110 may include one or more interfaces.

In some embodiments of the present application, the processor 110 may perform the power control method mentioned in this scheme.

The charge management module 140 is configured to receive a charge input from a charger.

The power management module 141 is used for connecting the battery 142, and the charge management module 140 and the processor 110.

The wireless communication function of the electronic device 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the electronic device 100 may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution for wireless communication including 2G/3G/4G/5G, etc., applied to the electronic device 100. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc. The mobile communication module 150 may receive electromagnetic waves from the antenna 1, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 150 can amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna 1 to radiate. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be provided in the same device as at least some of the modules of the processor 110.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating 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. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs sound signals through an audio device (not limited to the speaker 170A, the receiver 170B, etc.), or displays images or video through the display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional module, independent of the processor 110.

The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (Wireless Local Area Networks, WLAN) (e.g., wireless fidelity (Wireless Fidelity, wi-Fi) network), bluetooth (BT), global navigation satellite system (Global Navigation Satellite System, GNSS), frequency modulation (Frequency Modulation, FM), near field wireless communication technology (Near Field Communication, NFC), infrared technology (IR), etc., as applied to the electronic device 100. The wireless communication module 160 may be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2.

In some embodiments of the present application, the wireless communication module 160 comprises the radio frequency module shown in fig. 6.

In some embodiments, antenna 1 and mobile communication module 150 of electronic device 100 are coupled, and antenna 2 and wireless communication module 160 are coupled, such that electronic device 100 may communicate with a network and other devices through wireless communication techniques. The wireless communication techniques may include the Global System for Mobile communications (global system for mobile communications, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM and/or IR techniques, among others. The GNSS may include a global satellite positioning system (global positioning system, GPS), a global navigation satellite system (global navigation satellite system, GLONASS), a beidou satellite navigation system (beidou navigation satellite system, BDS), a quasi zenith satellite system (quasi-zenith satellite system, QZSS) and/or a satellite based augmentation system (satellite based augmentation systems, SBAS).

The electronic device 100 implements display functions through a GPU, a display screen 194, an application processor, and the like. The GPU is a microprocessor for image processing, and is connected to the display 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

The display screen 194 is used to display images, videos, and the like. In some embodiments, the electronic device 100 may include 1 or N display screens 194, N being a positive integer greater than 1.

The electronic device 100 may implement acquisition functions through an ISP, a camera 193, a video codec, a GPU, a display screen 194, an application processor, and the like.

The ISP is used to process data fed back by the camera 193.

The camera 193 is used to capture still images or video.

The digital signal processor is used to process digital signals, and may process other digital signals in addition to digital image or video signals.

Video codecs are used to compress or decompress digital video.

The external memory interface 120 may be used to connect an external memory card, such as a Micro SD card, to enable expansion of the memory capabilities of the electronic device 100.

The internal memory 121 may be used to store computer executable program code including instructions. The processor 110 executes various functional applications of the electronic device 100 and data processing by executing instructions stored in the internal memory 121. The internal memory 121 may include a storage program area and a storage data area.

The electronic device 100 may implement audio functions through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, an application processor, and the like. Such as music playing, recording, etc.

The audio module 170 is used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal.

The speaker 170A, also referred to as a "horn," is used to convert audio electrical signals into sound signals.

A receiver 170B, also referred to as a "earpiece", is used to convert the audio electrical signal into a sound signal.

Microphone 170C, also referred to as a "microphone" or "microphone", is used to convert sound signals into electrical signals. The electronic device 100 may be provided with at least one microphone 170C.

The earphone interface 170D is used to connect a wired earphone.

The sensor module 180 may include 1 or more sensors, which may be of the same type or different types. It will be appreciated that the sensor module 180 shown in fig. 1 is merely an exemplary division, and that other divisions are possible and the application is not limited in this regard.

The pressure sensor 180A is used to sense a pressure signal, and may convert the pressure signal into an electrical signal.

The gyro sensor 180B may be used to determine a motion gesture of the electronic device 100.

The air pressure sensor 180C is used to measure air pressure.

The magnetic sensor 180D includes a hall sensor. The electronic device 100 may detect the opening and closing of the flip cover using the magnetic sensor 180D.

The acceleration sensor 180E may detect the magnitude of acceleration of the electronic device 100 in various directions (typically three axes). The magnitude and direction of gravity may be detected when the electronic device 100 is stationary. The method can also be used for identifying the gesture of the electronic equipment 100, and can be applied to applications such as horizontal and vertical screen switching, pedometers and the like.

A distance sensor 180F for measuring a distance.

The proximity light sensor 180G may include, for example, a Light Emitting Diode (LED) and a light detector, such as a photodiode.

The ambient light sensor 180L is used to sense ambient light level.

The fingerprint sensor 180H is used to acquire a fingerprint.

The temperature sensor 180J is for detecting temperature.

The touch sensor 180K, also referred to as a "touch panel". The touch sensor 180K is for detecting a touch operation acting thereon or thereabout. The touch sensor 180K may communicate the detected touch operation to the application processor to determine the touch event type. The touch sensor 180K may also provide visual output related to touch operations through the display screen 194. In other embodiments, the touch sensor 180K may also be disposed on the surface of the electronic device 100 at a different location than the display 194.

It is understood that the touch sensor 180K may be a touch screen. In some embodiments of the present application, the touch sensor 180K may be disposed on the display screen 194.

In some embodiments of the present application, touch sensor 180K may be a projected capacitive touch screen.

It should be noted that, the touch screen of the electronic device 100 in the present application is the touch sensor 180K.

The bone conduction sensor 180M may acquire a vibration signal.

The keys 190 include a power-on key, a volume key, etc. The keys 190 may be mechanical keys. Or may be a touch key. The electronic device 100 may receive key inputs, generating key signal inputs related to user settings and function controls of the electronic device 100.

The motor 191 may generate a vibration cue. The motor 191 may be used for incoming call vibration alerting as well as for touch vibration feedback.

The indicator 192 may be an indicator light, may be used to indicate a state of charge, a change in charge, a message indicating a missed call, a notification, etc.

The SIM card interface 195 is used to connect a SIM card.

Fig. 11 is a schematic software structure of an electronic device according to an embodiment of the present application. The above-mentioned electronic device may be the electronic device 100 shown in fig. 11.

As shown in fig. 11, the software system of the electronic device 100 may employ a layered architecture, an event driven architecture, a micro-core architecture, a micro-service architecture, or a cloud architecture. In the embodiment of the application, taking an Android system with a layered architecture as an example, a software structure of the electronic device 100 is illustrated.

The layered architecture divides the software into several layers, each with distinct roles and branches. The layers communicate with each other through a software interface. In some embodiments, the Android system is divided into four layers, from top to bottom, an application layer, an application framework layer, an Zhuoyun row (Android run) and system libraries, and a kernel layer, respectively.

The application layer may include a series of application packages.

As shown in fig. 11, the application package may include applications for cameras, gallery, settings, phone calls, maps, navigation, WLAN, bluetooth, music, video, short messages, etc.

The application framework layer provides an application programming interface (application programming interface, API) and programming framework for application programs of the application layer. The application framework layer includes a number of predefined functions.

As shown in fig. 11, the application framework layer may include a window manager, a content provider, a view system, a phone manager, a resource manager, a notification manager, and the like.

The window manager is used for managing window programs. The window manager can acquire the size of the display screen, judge whether a status bar exists, lock the screen, intercept the screen and the like.

The content provider is used to store and retrieve data and make such data accessible to applications. The data may include video, images, audio, calls made and received, browsing history and bookmarks, phonebooks, etc.

The view system includes visual controls, such as controls to display text, controls to display pictures, and the like. The view system may be used to build applications. The display interface may be composed of one or more views. For example, a display interface including a text message notification icon may include a view displaying text and a view displaying a picture.

The telephony manager is used to provide the communication functions of the electronic device 100. Such as the management of call status (including on, hung-up, etc.).

The resource manager provides various resources for the application program, such as localization strings, icons, pictures, layout files, video files, and the like.

The notification manager enables the application to display notification information in the status bar, can be used to communicate notification type messages, and can automatically disappear after fast stay without user interaction. Such as notification manager is used to inform that the download is complete, message alerts, etc. The notification manager may also be a notification in the form of a chart or scroll bar text that appears on the system top status bar, such as a notification of a background running application, or a notification that appears on the screen in the form of a dialog window. For example, a text message is prompted in a status bar, a prompt tone is emitted, the electronic device vibrates, and an indicator light blinks, etc.

Android run time includes a core library and virtual machines. Android run time is responsible for scheduling and management of the Android system.

The core library consists of two parts: one part is a function which needs to be called by java language, and the other part is a core library of android.

The application layer and the application framework layer run in a virtual machine. The virtual machine executes java files of the application program layer and the application program framework layer as binary files. The virtual machine is used for executing the functions of object life cycle management, stack management, thread management, security and exception management, garbage collection and the like.

The system library may include a plurality of functional modules. For example: surface manager (surface manager), media Libraries (Media Libraries), three-dimensional graphics processing Libraries (e.g., openGL ES), 2D graphics engines (e.g., SGL), etc.

The surface manager is used to manage the display subsystem and provides a fusion of 2D and 3D layers for multiple applications.

Media libraries support a variety of commonly used audio, video format playback and recording, still image files, and the like. The media library may support a variety of audio and video encoding formats, such as MPEG4, h.264, MP3, AAC, AMR, JPG, PNG, etc.

The three-dimensional graphic processing library is used for realizing three-dimensional graphic drawing, image rendering, synthesis, layer processing and the like.

The 2D graphics engine is a drawing engine for 2D drawing.

The kernel layer is a layer between hardware and software. The inner core layer at least comprises a display driver, a camera driver, an audio driver and a sensor driver.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims

1. A power control method, applied to an electronic device, the method comprising:

obtaining average transmitting power; the average transmitting power is the average value of the transmitting power of the transmitting signal in a certain time;

if the average transmitting power is larger than a first threshold value, a first impedance network is started to linearly attenuate the transmitting power according to a preset attenuation value, and the transmitting power after the linear attenuation is attenuated again based on a clock signal;

Wherein, in a time period, the high level duration of the clock signal is less than the low level duration.

2. The method of claim 1, wherein after the obtaining the average transmit power, the method further comprises:

if the average transmitting power is smaller than a second threshold value, a second impedance network is started, and the transmitting power is increased through the second impedance network; the second impedance network is used for linearly increasing the transmitting power according to a preset increasing value; the second threshold is less than the first threshold.

3. A method according to claim 1 or 2, wherein the first impedance network is a T-type or pi-type network consisting of a plurality of adjustable resistors.

4. The method of claim 3, wherein prior to said turning on the second impedance network, the method further comprises:

and adjusting the resistance values of the adjustable resistors in the first impedance network to obtain the second impedance network.

5. The method of claim 3 or 4, wherein the first impedance network comprises an adjustable resistor R1, an adjustable resistor R2, and an adjustable resistor R3; one side of the adjustable resistor R1 is connected with the input end of the emission signal and the adjustable resistor R2, and the other side is connected with the output end of the emission signal and the adjustable resistor R3; the adjustable resistor R2 and the adjustable resistor R3 are not connected with one side of the adjustable resistor R1 to be grounded.

6. The method according to any one of claims 1-5, wherein the linearly attenuated transmit power is further attenuated based on a clock signal, comprising:

and after the transmission signal is transmitted to the first impedance network and the duplexer, the transmission power of the transmission signal subjected to linear attenuation is attenuated according to the clock signal.

7. The method according to any one of claims 1-6, wherein the linearly attenuated transmit power is further attenuated based on a clock signal, comprising:

and attenuating the transmission power after the linear attenuation according to the power correspondingly set when the clock signal is at the high level, the power correspondingly set when the clock signal is at the low level and the duty ratio of the high level duration time in one time period of the clock signal.

8. The method of any one of claims 1-7, wherein the method further comprises: the clock signal is rectangular wave, and in a time period, the high level duration of the clock signal is t/8; and t is the time period of the clock signal.

9. An electronic device comprising a display screen, a memory, one or more processors, wherein the memory is for storing a computer program; the processor is configured to invoke the computer program to cause the electronic device to perform the method of any of claims 1-8.

10. A computer storage medium, comprising: computer instructions; when executed on an electronic device, the computer instructions cause the electronic device to perform the method of any of claims 1-8.