CN118783981A - Antenna switching method, device, terminal equipment and storage medium - Google Patents

Abstract

The embodiment of the present application discloses a method, apparatus, terminal device and storage medium for antenna switching, which is used to switch the first antenna to the second antenna for communication when the first actual current of the first antenna used in the current working frequency band meets the preset conditions, because the reference current of the second antenna is less than the first actual current, thereby reducing the power consumption of the terminal device. The method of the embodiment of the present application is applied to a radio frequency system, and the radio frequency system includes multiple antennas, and the method includes: detecting the target transmission power and the corresponding first actual current of the first antenna used in the current working frequency band; when the first actual current meets the preset conditions, switching the first antenna to the second antenna, and using the second antenna for communication, the second antenna is an antenna among multiple antennas that supports the current working frequency band, and the reference current corresponding to the target transmission power is less than the first actual current; wherein the multiple antennas include the first antenna and the second antenna.

Description

Antenna switching method, device, terminal equipment and storage medium

Technical Field

The present application relates to the field of communications, and in particular to a method, apparatus, terminal equipment and storage medium for antenna switching.

Background Art

With the implementation of new RF technologies such as 5G, dual sim dual active (DSDA), and uplink multiple-input multiple-output (UL MIMO), the power consumption of terminal equipment is increasing, and the battery life requirements are becoming more and more stringent. Currently, most RF technologies are optimizing conduction power consumption, such as improving the efficiency of the power amplifier (PA), optimizing the path insertion loss, and using the envelope tracking (ET) function to reduce power consumption; there are also solutions through antenna switching. The current antenna switching solution is based on signal strength. However, there may be a situation where the signal strength is good, but the power consumption of the whole device is relatively large, which will cause the terminal equipment to heat up quickly, affecting the standby time, and thus affecting the user experience.

Summary of the invention

An embodiment of the present application provides an antenna switching method, apparatus, terminal device and storage medium, which are used to switch the first antenna to a second antenna for communication when a first actual current of a first antenna used in a current working frequency band meets a preset condition. Because the reference current of the second antenna is less than the first actual current, the power consumption of the terminal device can be reduced.

A first aspect of the present application provides an antenna switching method, the method being applied to a radio frequency system, the radio frequency system including a plurality of antennas, and the method may include:

Detecting a target transmission power of a first antenna used in a current working frequency band and a corresponding first actual current;

When the first actual current meets a preset condition, the first antenna is switched to a second antenna, and the second antenna is used for communication, where the second antenna is an antenna among the multiple antennas that supports the current working frequency band and uses an antenna whose reference current corresponding to the target transmit power is less than the first actual current;

The multiple antennas include the first antenna and the second antenna.

A second aspect of the present application provides an antenna switching device, the device is applied to a radio frequency system, the radio frequency system includes multiple antennas, and the device includes:

A detection module, used to detect a target transmission power of a first antenna used in a current working frequency band and a corresponding first actual current;

a switching module, configured to switch the first antenna to a second antenna when the first actual current is greater than a first preset current, and a communication module, configured to use the second antenna for communication, wherein a reference current corresponding to the target transmit power used by the second antenna is less than the first actual current;

The multiple antennas include the first antenna and the second antenna.

A third aspect of the present application provides a terminal device, including a memory and a processor, wherein the memory stores a computer program that can be executed on the processor, and when the terminal device executes the program, the method described in the first aspect of the present application is implemented.

A fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method described in the first aspect of the present application is implemented.

In a fifth aspect, the present application provides a chip, comprising a computer program, which, when executed by a processor, implements the method described in the first aspect of the present application.

Yet another aspect of an embodiment of the present application discloses a computer program product. When the computer program product is run on a computer, the computer is enabled to execute the method described in the first aspect of the present application.

Another aspect of an embodiment of the present application discloses an application publishing platform, which is used to publish a computer program product. When the computer program product runs on a computer, the computer executes the method described in the first aspect of the present application.

It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

In an embodiment of the present application, a method for antenna switching is provided, the method is applied to a radio frequency system, the radio frequency system includes multiple antennas, the method may include: detecting the target transmission power and the corresponding first actual current of the first antenna used in the current working frequency band; when the first actual current meets the preset condition, switching the first antenna to the second antenna, using the second antenna for communication, the second antenna being an antenna among the multiple antennas that supports the current working frequency band and uses a reference current corresponding to the target transmission power that is less than the first actual current; wherein the multiple antennas include the first antenna and the second antenna. The method is used to switch the antenna by detecting the current of the power amplifier corresponding to the target transmission power of the antenna, thereby achieving the purpose of reducing the power consumption of the terminal device, that is, when the first actual current of the first antenna used in the current working frequency band meets the preset condition, the first antenna can be switched to the second antenna for communication, because the reference current of the second antenna is less than the first actual current, thereby reducing the power consumption of the terminal device.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments and the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained based on these drawings.

FIG1A is an architecture diagram of a radio frequency system in a terminal device in the related art;

1B and 1C are schematic diagrams of hand-held scenes of the entire terminal device;

FIG1D is a schematic diagram of a charging scenario of a terminal device;

FIG2A is a diagram of a radio frequency system architecture used in an embodiment of the present application;

FIG2B is another RF system architecture diagram used in an embodiment of the present application;

FIG3 is a schematic diagram of an embodiment of a method for antenna switching in an embodiment of the present application;

FIG4 is a schematic diagram of another embodiment of the method for antenna switching in an embodiment of the present application;

FIG5 is a schematic flow chart of a method for antenna switching in an embodiment of the present application;

FIG6 is a schematic diagram of an embodiment of an antenna switching device in an embodiment of the present application;

FIG7A is a schematic diagram of an embodiment of a terminal device in an embodiment of the present application;

FIG. 7B is a schematic diagram of another embodiment of a terminal device in an embodiment of the present application.

DETAILED DESCRIPTION

An embodiment of the present application provides an antenna switching method, apparatus, terminal device and storage medium, which are used to switch the first antenna to a second antenna for communication when a first actual current of a first antenna used in a current working frequency band meets a preset condition. Because the reference current of the second antenna is less than the first actual current, the power consumption of the terminal device can be reduced.

In order to make the technical personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiment of the present application will be described below in conjunction with the drawings in the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, not all of the embodiments. Based on the embodiments in the present application, they should all fall within the scope of protection of the present application.

With the implementation of new RF technologies such as 5G, dual sim dual active (DSDA), and uplink multiple-input multiple-output (UL MIMO), the power consumption of the whole machine is increasing, and the battery life requirements are becoming more and more stringent. At the same time, the antenna efficiency of the whole machine is reduced due to the industrial design (ID) restrictions on antenna clearance and the sharp increase in the number of antennas, which leads to a decrease in antenna efficiency. This increases the power consumption of the whole machine, affects the battery life and temperature rise of the whole machine. From the user's feedback experience, temperature rise and battery life are very important indicators for mobile phones. At present, most RF technologies are optimizing the conduction power consumption, such as improving the efficiency of the power amplifier (PA), optimizing the path insertion loss, and the envelope tracking (ET) function to reduce power consumption; there are also ways to solve it through antenna switching. The current antenna switching solution is based on signal strength. The mainstream solution is to estimate the uplink signal performance of each antenna by testing the reference signal receiving power (RSRP) of the downlink signal of different antennas, and select the antenna with the best estimated uplink signal for signal transmission.

As shown in Figure 1A, it is the architecture diagram of the RF system in the terminal equipment in the related technology. It is mainly composed of a baseband integrated circuit, also known as a baseband chip (Baseband integrated circuit, BB IC), a radio frequency processor (Transceiver), a radio frequency front end (RF Front-end), a radio frequency power DC-to-DC converter (DC-to-DC converter, DCDC), a power management chip, also known as a power management integrated circuit (Power Management Integrated Circuit, PMIC), an antenna switch and other parts that combine the radio frequency transmitter and receiver to complete the communication function.

The existing technical solutions for optimizing power consumption are as follows:

Device selection: Choose more efficient PA and power supply chips to reduce the power consumption of the whole machine.

Channel insertion loss: The smaller the channel insertion loss of the RF front end, the lower the PA output power and the correspondingly lower the power consumption. Generally, the channel insertion loss is reduced by reducing the antenna combining form, low insertion loss devices, routing optimization, etc.

ET function: The PA is powered by envelope tracking, which saves more power than the average power tracking (APT) mode.

The above-mentioned methods are commonly used methods for optimizing power consumption in related technical solutions.

However, the existing optimized conduction technology solutions are not helpful for the power consumption of the whole machine, especially when the antenna of the terminal device is touched by the human body or other metal objects in scenarios such as horizontal screen gaming, hand-held, and USB charging, which will affect the passive position of the antenna. At this time, the antenna performance of the whole machine changes dramatically, and the power consumption and performance of the whole machine are seriously affected. As shown in Figures 1B and 1C, it is a schematic diagram of the hand-held scenario of the whole terminal device. As shown in Figure 1D, it is a schematic diagram of the charging scenario of the terminal device.

Table 1 VSWR = 3:1 and current simulation values at each frequency band

Table 2 Comparison of power consumption data of the whole machine in free space state and horizontal screen hand-held state

According to Table 2, it can be concluded that in the hand-held state, if the antenna is switched to ANT5, the power consumption of ANT5 in the hand-held scenario will be about 150mA higher than that in the free space scenario.

It can be seen that in the relevant technical solutions, the voltage standing wave ratio (VSWR) of the whole machine will change when it is held in hand, in horizontal screen, plugged in USB and other scenarios, and the phase will also change, resulting in a very large impact on the current of the whole machine, which has a very bad experience on the temperature rise and battery life of the whole machine. Usually in these scenarios, by using antenna switching technology, the current antenna switching technology is to determine which antenna to use for signal transmission by testing the downlink signal RSRP. There are the following disadvantages here: for the frequency division duplexing (FDD) band TX (Transmit, transmission) and RX (Receive, reception) are not in the same frequency, and the TX channel performance is estimated by the RX signal. There are deficiencies, and the antenna selection is not the best performance, which affects the power consumption and temperature rise of the whole machine; on the other hand, the estimation is based on the antenna transmission power, and the antenna transmission power will be small, but the power consumption used for the transmission signal is greater. For example, in the example in Table 2, if the hand is switched to the antenna (ANT) 5 position, the power consumption of the whole machine will increase.

In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

As an example but not limitation, in the embodiment of the present application, the terminal device can also be a wearable device with a display interface. Wearable devices can also be called wearable smart devices, which are a general term for wearable devices that use wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

The antenna switching method in the embodiment of the present application is described by taking a mobile phone used in a terminal device as an example.

Based on the defects in the relevant technical solutions, the technical solution of the present application proposes to select a suitable antenna based on current detection to optimize the power consumption of the whole machine in various scenarios; when the power consumption of the RF PA increases sharply, switch the antenna and select an antenna with lower PA power consumption for transmission, so that the whole machine can always use the antenna with lower power consumption for transmission, thereby improving the problems of power consumption and temperature rise, and can greatly improve the user experience.

The RF system architecture diagram used in the embodiment of the present application, compared with the RF system architecture diagram in the related technical solution, adds a current detection module, which can be built in the RF power supply DCDC, can be built in the PMIC, or can be used as an independent module, connected between the RF power supply DCDC and the PMIC, and this application does not make specific restrictions. The current detection module is used to detect the actual current corresponding to the target transmission power used by the antenna. As shown in Figure 2A, it is a RF system architecture diagram used in the embodiment of the present application. In Figure 2A, the current detection module is connected between the RF power supply DCDC and the PMIC as an example. Exemplarily, the current detection module here can be implemented by a current detection resistor, and the current detection resistor also needs to be connected to the baseband chip (BB IC), and has an analog-to-digital converter (ADC) function general-purpose input/output (GPIO). As shown in Figure 2B, it is another RF system architecture diagram used in the embodiment of the present application. As shown in Figure 2B, the current detection resistor can be connected to the BB IC through differential routing.

The current detection resistor is a chip sampling resistor with a small resistance value. It is connected in series in the circuit to convert the current into a voltage signal for measurement. The function of the current detection resistor is to serve as a reference. It is often used in feedback circuits. Taking the voltage-stabilized power supply circuit as an example, in order to keep the output voltage constant, a part of the voltage is taken from the output voltage as a reference (commonly used in the form of a sampling resistor). If the output is high, the input end automatically reduces the voltage to reduce the output; if the output is low, the input end automatically increases the voltage to increase the output. It is generally used in power supply products, or the power supply part of electronic, digital, and electromechanical products, and has powerful functions.

Sampling resistors generally use precision resistors with low resistance and high precision. Generally, the resistance precision is within ±1%. For applications with higher requirements, resistors with 0.01% precision are used. Generally, the resistance of sampling resistors is selected below 1 ohm, which belongs to milliohm resistors. However, some resistors have requirements such as sampling voltage, so large resistance must be selected. However, the resistance base is large, resulting in large errors. In this case, high-precision resistors need to be selected.

In an embodiment of the present application, when a terminal device uses an antenna to transmit a signal, when the user's usage scenario changes, the PA load, the antenna's VSWR and phase will change, causing the PA power consumption to increase. At this time, the current can be detected by the current detection module. If an increase in current is detected, it means that the power consumption has increased. You can try to switch to other antennas and then detect whether the current has decreased, thereby achieving the purpose of optimizing power consumption.

The technical solution of the present application is further described below by way of an embodiment. As shown in FIG3 , it is a schematic diagram of an embodiment of a method for antenna switching in an embodiment of the present application. The method is applied to a radio frequency system, the radio frequency system includes multiple antennas, and the method embodiment may include the following steps:

301. Detect a target transmission power of a first antenna used in a current working frequency band and a corresponding first actual current.

When the terminal device uses the first antenna to transmit a signal, the target transmission power of the first antenna used in the current working frequency band and the corresponding first actual current can be detected. It should be noted that the first antenna here is the default antenna, that is, in the current working frequency band, the current of the first antenna is the smallest when transmitting the target transmission power, and the reference power consumption is the lowest. Exemplarily, the terminal device is currently operating at ANT1 B1, the target transmission power is 10dbm, and the corresponding first actual current of the PA is 95mA.

In one implementation, the detection of the target transmission power of the first antenna used in the current working frequency band and the corresponding first actual current may include: detecting the target transmission power of the first antenna used in the current working frequency band, and detecting the first actual current corresponding to the target transmission power through a current detection module. In this technical solution, the first actual current corresponding to the target transmission power used by the first antenna can be detected through the current detection module, which provides a specific implementation method for current detection and improves the feasibility of the solution.

Current sensing modules can be used for current sensing, which is a basic task in electronic and electrical systems to evaluate, control and diagnose system performance. The following are some common current sensing methods:

Precision Current Sense Resistor, precision current sense resistor is a high-precision resistor used to measure smaller currents. It detects current by measuring the voltage drop across the resistor, but pays more attention to accuracy; and has a higher resistance value to provide sufficient voltage drop for measuring smaller currents; it also has a very low temperature coefficient and long-term stability. It is usually used in situations where high-precision current detection is required.

Shunt Resistor: A low-resistance precision resistor is connected in series in the current path, and the current is detected by measuring the voltage drop across the resistor. This method is simple and low-cost, but it will introduce a certain voltage drop, which may affect the performance of the circuit.

Hall Effect Sensor: Utilizes the Hall Effect principle to measure magnetic field strength through a semiconductor chip and infer current. This method is non-invasive and can measure AC or DC current without physical contact.

Rogowski Coil: Suitable for measuring AC current. It detects the magnetic field generated by the current change through a circular coil and then calculates the current. This method has a good frequency response to the current, but the cost is relatively high.

Current Transformer (CT): measures current through the transformer principle. It is suitable for high current measurement, but is usually only used for AC current detection.

Optical Current Sensor: Utilizes the characteristics of light transmission in optical fiber to detect current by measuring the effect of the magnetic field generated by current on light. This method has the characteristics of high bandwidth and immunity to electromagnetic interference.

Flux Gate: Flux Gate technology is used to measure the magnetic field and then infer the current. This method is suitable for measuring current in a strong magnetic field environment.

Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) on-resistance (RDS(ON)): Current is detected by using the voltage drop generated by the internal resistance of the MOSFET when it is turned on. This method avoids additional detection components, but the accuracy is affected by MOSFET parameters and temperature.

Inductor DC resistance (DCR): A DC resistance component is added to the inductor element, and the current is detected by measuring the voltage drop across the resistance. This method does not require additional components, but the accuracy is affected by the inductor DCR parameter.

Dedicated current monitoring chips: There are many dedicated current monitoring integrated circuits on the market, which integrate the required op amps, resistors and other components to provide high-precision and high common mode rejection ratio (CMRR) current detection solutions.

Each current sensing method has its advantages and limitations, and factors such as measurement accuracy, cost, circuit complexity, temperature drift, and electromagnetic compatibility need to be considered when selecting. When designing a current sensing circuit, the most appropriate method should be selected based on the specific application requirements and environmental conditions.

It should be noted that the terminal device may pre-store the antennas supported by each working frequency band, the transmit powers and corresponding reference currents when the terminal device is in the target state. This information may be stored in the form of a mapping table, which may be described in different situations as follows:

Case 1: In the terminal device, the antennas supported by each working frequency band, the transmission powers of each antenna in the free space state and the corresponding reference current can be pre-stored.

Example 1: The B1 operating frequency band corresponds to antenna 1 and antenna 2.

Antenna 1 emits 10dbm power in free space, corresponding to a PA reference current of 80mA;

When antenna 2 emits 10 dBm power in free space, the PA reference current is 85 mA.

Example 2: The B1 operating frequency band corresponds to antenna 1, antenna 2, and antenna 3.

Antenna 1 emits 10dbm power in free space, corresponding to a PA reference current of 80mA;

Antenna 2 emits 10dbm power in free space, corresponding to a PA reference current of 85mA;

When antenna 3 emits 10 dBm power in free space, the corresponding PA reference current is 90 mA.

Case 2: The terminal device may pre-store the antennas supported by each operating frequency band, the transmission powers and the corresponding reference currents in the target state, where the target state includes a free space state, a hand-held state, a horizontal screen state, or a charging state.

It should be noted that the hand-held state, horizontal screen state and charging state here are actually several specific states other than the free space state. If the terminal device is not in the hand-held state, horizontal screen state and charging state, the default antenna in the free space state is used for communication.

Example: The B1 operating frequency band corresponds to antenna 1, antenna 2, and antenna 3.

Antenna 1 emits 10dbm power in free space, corresponding to a PA reference current of 80mA;

When antenna 1 is held in the hand, the PA reference current corresponding to 10dbm power is 82mA;

When antenna 1 is in landscape mode and emits 10dbm power, the PA reference current is 85mA.

When antenna 1 is in charging state, the PA reference current corresponding to 10dbm power is 90mA;

Antenna 2 emits 10dbm power in free space, corresponding to a PA reference current of 85mA;

When antenna 2 is held in the hand, the PA reference current corresponding to 10dbm power is 85mA;

When antenna 2 is in landscape mode and emits 10dbm power, the PA reference current is 88mA.

When antenna 2 is in charging state, the PA reference current corresponding to 10dbm power is 90mA;

Antenna 3 emits 10dbm power in free space, corresponding to a PA reference current of 90mA;

When antenna 3 is held in the hand, the PA reference current corresponding to 10dbm power is 98mA;

When antenna 3 is in landscape mode and emits 10dbm power, the PA reference current is 92mA.

When antenna 3 is in charging state, the PA reference current corresponding to 10dbm power is 95mA.

302. When the first actual current meets a preset condition, switch the first antenna to a second antenna, and use the second antenna for communication.

After detecting the target transmission power of the first antenna used in the current working frequency band and the corresponding first actual current, the terminal device can determine whether the first actual current meets the preset condition, for example, comparing the first actual current (for example, 95mA) with the preset current, and switching the first antenna to the second antenna when the first actual current is greater than the preset current, or switching the first antenna to the second antenna when the first actual current is greater than the preset current and the difference between the first actual current (for example, 95mA) and the preset current is greater than the first difference threshold. The preset current can be an empirical value obtained based on big data, or a reference current corresponding to the target transmission power of the first antenna (for example, 80mA), or a pre-stored mapping table, supporting the use of any reference current corresponding to the target transmission power in the antenna of the current working frequency band, for example, the largest reference current in the pre-stored mapping table, or the smallest reference current in the pre-stored mapping table, which is not specifically limited here.

Exemplarily, the preset current is 80mA, then the first actual current 95mA is greater than the preset current 80mA; or, the first difference threshold is 10, and the difference between the first actual current 95mA and the preset current 80mA is 15mA, which is greater than the first difference threshold 10. It can be checked whether there are other antennas that are better than the current antenna. If so, switch to a better antenna. Here, the example of the better antenna being the second antenna is used for explanation.

In this technical solution, because the reference current of the switched second antenna is smaller than the first actual current of the first antenna, the power consumption of the terminal device can be reduced in theory.

In one implementation, the second antenna is an antenna that supports the current working frequency band among the multiple antennas and uses the smallest reference current corresponding to the target transmit power except for the first antenna. In this technical solution, because the reference current of the second antenna is the smallest except for the first antenna, theoretically, the power consumption of the terminal device is also the lowest, which can minimize the power consumption of the entire terminal device.

In one implementation, the first antenna and the second antenna are antennas supported by the current working frequency band in a free space state.

This implementation corresponds to the above-mentioned situation 1, that is, the terminal device pre-stores the antennas supported by each working frequency band, the transmission powers and the corresponding reference currents in the free space state. Therefore, the first antenna and the second antenna are both antennas supported by the current working frequency band in the free space state. The terminal device does not need to detect what state it is in, but only needs to select the antenna with a reference current less than the first actual current in the pre-stored mapping table for switching, thereby reducing the power consumption of the terminal device.

In another implementation, the first antenna is an antenna supported by the current working frequency band in a free space state, and the second antenna is an antenna supported by the current working frequency band in a target state, and the target state is a free space state, a hand-held state, a horizontal screen state, or a charging state.

This implementation corresponds to the above-mentioned situation 2, that is, the terminal device pre-stores the antennas supported by each working frequency band, the various transmission powers and the corresponding reference currents in the target state, and the target state includes the free space state, the hand-held state, the horizontal screen state, or the charging state. Therefore, the first antenna and the second antenna may be antennas supported by the current working frequency band in the same state, or may be antennas supported by the current working frequency band in different states. The terminal device needs to detect what state it is in. If the terminal device is in the target state, it can select the antenna whose reference current in the target state is less than the first actual current in the pre-stored mapping table for switching, so that the selected antenna is better and helps to reduce the power consumption of the terminal device.

Further optionally, when the first actual current meets a preset condition, switching the first antenna to the second antenna may include: when the first actual current meets the preset condition and is currently in a target state, selecting the second antenna and switching the first antenna to the second antenna.

If the first actual current meets the preset conditions, the target state of the terminal device can also be detected. For example, the target state of the terminal device can be detected by the sensor in the terminal device. The above sensor may include but is not limited to at least one of the following: a magnetic induction sensor, an acceleration sensor, a gyroscope, a sound sensor, an image sensor, a fingerprint sensor, a distance sensor, and a temperature sensor. If it is detected that the target state of the terminal device is currently in a hand-held state, then any antenna whose reference current corresponding to the target transmission power is less than the first actual current can be selected from the antennas in the current working frequency band in the hand-held state, that is, the second antenna is switched. If it is detected that the target state of the terminal device is currently in a horizontal screen state, then any antenna whose reference current corresponding to the target transmission power is less than the first actual current can be selected from the antennas in the current working frequency band in the horizontal screen state, that is, the second antenna is switched. If it is detected that the target state of the terminal device is currently in a charging state, then any antenna whose reference current corresponding to the target transmission power is less than the first actual current can be selected from the antennas in the current working frequency band in the charging state, that is, the second antenna is switched.

It should be noted that in some cases, the terminal device may be in both the horizontal screen state and the hand-held state, or the terminal device may be in both the horizontal screen state and the charging state, or the terminal device may be in both the hand-held state and the charging state, then the antenna with the smallest reference current in these two states can be selected for switching. In some cases, the terminal device may be in both the horizontal screen state, the hand-held state, and the charging state, then the antenna with the smallest reference current in these three states can be selected for switching.

In the present technical solution, if the first actual current meets the preset conditions, the current target state of the terminal device can also be detected, and an antenna whose reference current corresponding to the target transmission power in the target state is smaller than the first actual current is selected. Therefore, the selected antenna is targeted at the target state and is more targeted, thereby helping to reduce the power consumption of the terminal device.

In one implementation, the antennas supported by the current working frequency band include a first antenna and a second antenna; when the first actual current meets a preset condition, switching the first antenna to the second antenna may include: when the first actual current meets the preset condition, switching the first antenna to the second antenna through a first switch.

In this technical solution, a specific implementation method for antenna switching is provided. By switching the antenna through a switch, the efficiency of antenna switching can be effectively guaranteed and the feasibility of the solution can be improved.

Optionally, the first switch is a single-pole double-throw switch or a double-pole double-throw switch.

In this technical solution, a specific implementation method of the switch is provided, which can effectively ensure the efficiency of antenna switching and improve the feasibility of the solution.

In an embodiment of the present application, a method for antenna switching is provided, the method is applied to a terminal device, the terminal device includes multiple antennas, the method may include: detecting the target transmission power and the corresponding first actual current of the first antenna used in the current working frequency band; when the first actual current meets the preset condition, switching the first antenna to the second antenna, using the second antenna for communication, the second antenna being an antenna among the multiple antennas that supports the current working frequency band and uses a reference current corresponding to the target transmission power that is less than the first actual current; wherein the multiple antennas include the first antenna and the second antenna. The method is used to switch the antenna by detecting the current of the power amplifier corresponding to the target transmission power of the antenna, so as to achieve the purpose of reducing the power consumption of the terminal device, that is, when the first actual current of the first antenna used in the current working frequency band meets the preset condition, the first antenna can be switched to the second antenna for communication, because the reference current of the second antenna is less than the first actual current, thereby reducing the power consumption of the terminal device.

As shown in Figure 4, it is a schematic diagram of another embodiment of the method for antenna switching in an embodiment of the present application. The method is applied to a radio frequency system, and the radio frequency system includes multiple antennas. The method embodiment may include the following steps:

401. Detect a target transmission power of a first antenna used in a current working frequency band and a corresponding first actual current.

402. When the first actual current meets a preset condition, switch the first antenna to a second antenna, and use the second antenna for communication.

It should be noted that steps 401-402 in the embodiment of the present application are similar to steps 301-302 in the embodiment shown in FIG. 3 above, and will not be described in detail here.

403. Detect a second actual current corresponding to the target transmit power used by the second antenna.

After the terminal device switches the first antenna to the second antenna, it is also necessary to detect the second actual current corresponding to the target transmit power used by the second antenna. Exemplarily, the second actual current corresponding to the target transmit power used by the second antenna is detected to be 90 mA.

In one implementation, the detecting the second actual current corresponding to the target transmit power used by the second antenna may include: detecting the second actual current corresponding to the target transmit power used by the second antenna through a current detection module. In this technical solution, the second actual current corresponding to the target transmit power used by the second antenna may be detected through a current detection module, which provides a specific implementation method for current detection and improves the feasibility of the solution.

404. When the second actual current is less than the first actual current, continue to use the second antenna for communication; wherein the multiple antennas include the first antenna and the second antenna.

Exemplarily, the first actual current corresponding to the target transmit power of the first antenna used in the current working frequency band is 95mA, and the second actual current corresponding to the target transmit power of the second antenna used in the current working frequency band is 90mA. Because the second actual current of 90mA is less than the first actual current of 95mA, the target transmit power of the second antenna can continue to be used in the current working frequency band for communication, i.e., transmitting signals. In the present technical solution, because the second actual current corresponding to the target transmit power of the second antenna is less than the first actual current corresponding to the target transmit power of the first antenna, the second antenna can continue to be used for communication, thereby reducing the power consumption of the terminal device.

In one implementation, when the second actual current is less than the first actual current, continuing to use the second antenna for communication may include: when the second actual current is less than the first actual current and the difference between the first actual current and the second actual current is greater than a second difference threshold, continuing to use the second antenna for communication.

In the present technical solution, because the default first antenna is the antenna with the best performance in all aspects, it can avoid the situation where the second actual current is only slightly smaller than the first actual current. If the second antenna continues to be used, except that the current is slightly smaller than the first antenna, other performance is not better than the first antenna. Therefore, when the second actual current is less than the first actual current, the difference between the first actual current and the second actual current needs to be greater than the second difference threshold before the second antenna can continue to be used for communication, which can reduce the relatively large power consumption of the terminal device, and other performance of the terminal device can be temporarily ignored.

405: When a duration of using the second antenna for communication exceeds a preset duration, switch the second antenna to the first antenna, and use the first antenna for communication.

Exemplarily, when the current antenna used by the terminal device is not the default antenna (the embodiment of the present application takes the first antenna as an example to illustrate the default antenna), it can switch back to the default antenna at preset time intervals, and test the current actual current of the default antenna at the same time. If the current actual current is greater than the actual current of the non-default antenna, switch back to the non-default antenna for communication. If the current actual current is less than the actual current of the non-default antenna, use the default antenna for communication.

In the present technical solution, because under normal circumstances, the default antenna is the antenna with the lowest power consumption of the terminal device, even if the actual current of the default antenna increases in certain states, thereby switching to other antennas for communication, it is still necessary to switch back to the default antenna at intervals to detect the actual current of the default antenna and determine whether to use the default antenna for communication. In this way, it is ensured to a greater extent that the terminal device uses a low-power antenna for communication and reduces the power consumption of the entire terminal device.

406. When the second actual current is greater than the first actual current, switch the second antenna to the first antenna, and use the first antenna for communication.

Exemplarily, after switching from the first antenna to the second antenna, the second actual current of the second antenna after switching is detected to confirm whether it is better than the actual current before switching. If it is better than the actual current before switching, the second antenna after switching is maintained for communication. If not, it is switched back to the first antenna or switched to another antenna. For example: the first actual current corresponding to the target transmission power of the first antenna used in the current working frequency band is 95mA, and the second reference current corresponding to the target transmission power of the second antenna used in the current working frequency band is 85mA, but the second actual current detected is 100mA. Because the second actual current of 100mA is greater than the first actual current of 95mA, the power consumption of the terminal device is increased instead, and the second antenna is switched back to the first antenna for communication, that is, transmitting the signal. In the present technical solution, because the second actual current corresponding to the target transmission power of the second antenna is greater than the first actual current corresponding to the target transmission power of the first antenna, it is necessary to switch the second antenna to the first antenna for communication again, thereby reducing the power consumption of the terminal device.

407. Detect a fourth actual current corresponding to the target transmit power used by the first antenna; and continue to use the first antenna for communication when the fourth actual current is less than the second actual current.

It should be noted that step 407 may be followed by step 405 or 406 .

In the present technical solution, because under normal circumstances, the default antenna is the antenna with the lowest power consumption of the terminal device, even if the actual current of the default antenna increases under certain conditions, thereby switching to other antennas for communication, it is still necessary to switch back to the default antenna at intervals to detect whether the current actual current of the default antenna is better. If it is better, the default antenna is used for communication, thereby ensuring to a greater extent that the terminal device uses a low-power antenna for communication and reducing the power consumption of the entire terminal device.

It should be noted that in the embodiment of the present application, steps 405-407 are optional steps.

In the above example description, the antenna supporting the current working frequency band includes the first antenna and the second antenna. The following example describes the antenna supporting the current working frequency band including the first antenna, the second antenna and the third antenna, as shown below:

In one implementation, the multiple antennas include the first antenna, the second antenna and the third antenna, and the method may also include: when the second actual current is greater than the first actual current, switching the second antenna to the third antenna, using the third antenna for communication, the third antenna being an antenna among the multiple antennas that supports the current working frequency band, and using an antenna whose reference current corresponding to the target transmit power is less than the first actual current.

Exemplarily, because the multiple antennas include a first antenna, a second antenna, and a third antenna, when the first actual current of the default first antenna meets a preset condition, when the first antenna is switched to the second antenna for communication, the second actual current using the second antenna is also detected, and when the second actual current is greater than the first actual current, the second antenna can also be switched to the third antenna for communication.

In the present technical solution, because the third antenna is an antenna among the multiple antennas that supports the current working frequency band and uses a reference current corresponding to the target transmission power that is less than the first actual current, when the actual power consumption of using the first antenna and the second antenna for communication is relatively large, the third antenna can be switched to communicate, thereby reducing the power consumption of the terminal device.

In one implementation, the multiple antennas include the first antenna, the second antenna and the third antenna, and the method may also include: when the second actual current is greater than the first actual current, switching the second antenna to the first antenna, and using the first antenna for communication; detecting that the first antenna uses a fourth actual current corresponding to the target transmit power; when the fourth actual current is greater than the first actual current, switching the first antenna to the third antenna, and using the third antenna for communication, the third antenna being an antenna among the multiple antennas that supports the current working frequency band, and using an antenna whose reference current corresponding to the target transmit power is less than the first actual current.

In the embodiment of the present application, the default antenna is taken as the first antenna as an example for explanation. In this technical solution, because the default antenna is usually the antenna with the lowest power consumption of the terminal device, even if the actual current of the default antenna increases in certain states, it is switched to other antennas for communication. However, when the actual current of other antennas is greater than the actual current of the default antenna, even if the current working frequency band still supports other antennas, it is necessary to switch back to the default antenna first, and detect whether the actual current of the default antenna at this time has changed. If the change is better, the default antenna is used for communication. If there is still no change, or the actual current is still relatively large, it can be switched to the third antenna for communication, and the third antenna is an antenna among the multiple antennas that supports the current working frequency band, and the reference current corresponding to the target transmit power is less than the first actual current. The antenna, thereby ensuring to a greater extent that the terminal device uses a low-power antenna for communication, reduces the power consumption of the entire terminal device.

In one implementation, regardless of whether it is after switching from the second antenna to the third antenna for communication, or after switching from the first antenna to the third antenna for communication, the method may also include: detecting a third actual current corresponding to the target transmit power used by the third antenna; and continuing to use the third antenna for communication when the third actual current is less than the first actual current.

In the present technical solution, after switching to the third antenna for communication, the third actual current corresponding to the target transmission power used by the third antenna can also be detected. When the third actual current corresponding to the third antenna is less than the first actual current of the first antenna, the third antenna can continue to be used for communication, thereby ensuring to a greater extent that the terminal device uses a low-power antenna for communication and reducing the power consumption of the entire terminal device.

In one implementation, the third antenna is an antenna that supports the current working frequency band among the multiple antennas and uses the smallest reference current corresponding to the target transmit power except for the first antenna and the second antenna. In this technical solution, because the reference current of the third antenna is the smallest except for the first antenna and the second antenna, theoretically, the power consumption of the terminal device is also the lowest, which can reduce the power consumption of the entire terminal device to the greatest extent.

It should be noted that the above description uses the example of supporting two antennas and three antennas for the current working frequency band. If the antenna supporting the current working frequency band includes more antennas, you can also refer to the switching method of the above three antennas to reduce the overall power consumption of the terminal device, which will not be elaborated here.

As shown in Figure 5, it is a flow chart of the antenna switching method in the embodiment of the present application. The terminal device needs to establish a network connection first, and then use the default antenna for transmission; record the current transmission power of the default antenna and the first actual current of the corresponding PA, and when the first actual current meets the preset conditions, switch to other antennas for transmission and detect the actual current of other antennas; then switch back to the default antenna, detect the fourth actual current of the PA corresponding to the default antenna, and when the actual current of the other antenna is greater than the fourth actual current, use the default antenna for communication, and when the actual current of the other antenna is less than the fourth actual current, switch back to other antennas for communication.

In one implementation, the antenna switching method is applied in a test scenario of a terminal device before it leaves the factory.

In this technical solution, the antenna switching method is not limited to the optimization application of terminal equipment in terms of power consumption, but is also applicable to the antenna assembly performance test of terminal equipment on the production line. The terminal equipment needs to test the antenna performance of the whole machine before leaving the factory. The current mainstream test solution is to test through instrument coupling; in this technical solution, it is also possible to test the PA current of the current antenna of the terminal equipment by transmitting a predetermined transmission power and comparing it with the pre-set standard prototype current to determine whether the antenna is successfully assembled and whether the antenna performance meets the predetermined standard. Using this technical solution, the terminal equipment can complete the test on a single machine, thereby saving the instrument testing cost. At the same time, there is no need to communicate with the instrument, the test efficiency is higher, and the test time cost is reduced.

In an embodiment of the present application, a method for antenna switching is provided, the method is applied to a terminal device, the terminal device includes multiple antennas, the method may include: detecting the target transmission power and the corresponding first actual current of the first antenna used in the current working frequency band; when the first actual current meets the preset condition, switching the first antenna to the second antenna, using the second antenna for communication, the second antenna being an antenna among the multiple antennas that supports the current working frequency band and uses a reference current corresponding to the target transmission power that is less than the first actual current; detecting the second antenna using the second actual current corresponding to the target transmission power; when the second actual current is less than the first actual current, continuing to use the second antenna for communication; wherein the multiple antennas include the first antenna and the second antenna. When the first actual current of the first antenna used in the current working frequency band meets the preset condition, the first antenna may be switched to the second antenna for communication, because the reference current of the second antenna is less than the first actual current, thereby theoretically reducing the power consumption of the terminal device, and further detecting the second actual current corresponding to the use of the second antenna, when the second actual current is less than the first actual current, using the second current for communication can reduce the power consumption of the terminal device. Compared with related technical solutions, there are currently no better measures to optimize power consumption for the entire machine. After using the technical solution of this application, the power consumption in different states may vary by 20-150mA based on the simulated reference current and the measured actual current, especially in weak network scenarios such as playing games in horizontal mode. It can solve problems such as power consumption and temperature rise of terminal devices in special scenarios, and can greatly improve the user experience.

As shown in FIG6 , it is a schematic diagram of an embodiment of an antenna switching device in an embodiment of the present application, the device is applied to a terminal device, the terminal device includes multiple antennas, and the device includes:

A detection module 601 is used to detect a target transmission power of a first antenna used in a current working frequency band and a corresponding first actual current;

A switching module 602 is used to switch the first antenna to the second antenna when the first actual current is greater than a first preset current, and a communication module 603 is used to use the second antenna for communication, and the reference current corresponding to the target transmission power used by the second antenna is less than the first actual current; wherein the multiple antennas include the first antenna and the second antenna.

Optionally, in one implementation, the detection module 601 is further used to detect a second actual current corresponding to the target transmit power used by the second antenna;

The communication module 603 is further configured to continue using the second antenna for communication when the second actual current is less than the first actual current.

Optionally, in one implementation, the second antenna is an antenna among the multiple antennas that supports the current working frequency band and uses the smallest reference current corresponding to the target transmit power except the first antenna.

Optionally, in one implementation, the detection module 601 is specifically configured to detect a target transmit power of a first antenna used in a current working frequency band, and detect a first actual current corresponding to the target transmit power through a current detection module.

Optionally, in one implementation, the RF system includes an RF power supply, a power management integrated circuit PMIC and a current detection module, the current detection module is built into the RF power supply, or, the current detection module is built into the PMIC, or, the current detection module is connected between the RF power supply and the PMIC.

Optionally, in an implementation manner, the first antenna and the second antenna are antennas supported by the current working frequency band in a free space state; or,

The first antenna is an antenna supported by the current working frequency band in a free space state, and the second antenna is an antenna supported by the current working frequency band in a target state, and the target state is a free space state, a hand-held state, a horizontal screen state, or a charging state.

Optionally, in one implementation, the switching module 602 is specifically used to select the second antenna and switch the first antenna to the second antenna when the first actual current meets a preset condition and is currently in a target state, the second antenna being an antenna among the multiple antennas that supports the current working frequency band and an antenna whose reference current corresponding to the target transmission power used in the target state is less than the first actual current.

Optionally, in one implementation, the switching module 602 is further configured to switch the second antenna to the first antenna when the second actual current is greater than the first actual current, and the communication module 603 is further configured to use the first antenna for communication;

or,

The processor 780 is further configured to switch the second antenna to the first antenna when the duration of using the second antenna for communication exceeds a preset duration. The communication module 603 is further configured to use the first antenna for communication.

Optionally, in an implementation manner, the multiple antennas include the first antenna, the second antenna, and a third antenna.

The switching module 602 is also used to switch the second antenna to the third antenna when the second actual current is greater than the first actual current. The communication module 603 is also used to use the third antenna for communication. The third antenna is an antenna among the multiple antennas that supports the current working frequency band and uses a reference current corresponding to the target transmission power that is less than the first actual current.

Optionally, in one implementation, the detection module 601 is further used to detect a fourth actual current corresponding to the target transmit power used by the third antenna;

The communication module 603 is further configured to continue using the third antenna for communication when the fourth actual current is less than the third actual current.

Optionally, in one implementation, the third antenna is an antenna among the multiple antennas that supports the current working frequency band and uses the smallest reference current corresponding to the target transmit power except the first antenna and the second antenna.

Optionally, in an implementation manner, the multiple antennas include the first antenna, the second antenna, and a third antenna.

The switching module 602 is further used to switch the second antenna to the first antenna when the second actual current is greater than the first actual current, and the communication module 603 is further used to use the first antenna for communication;

The detection module 601 is further used to detect a third actual current corresponding to the target transmit power used by the first antenna;

The switching module 602 is also used to switch the first antenna to the third antenna when the third actual current is greater than the second actual current. The communication module 603 is also used to use the third antenna for communication. The third antenna is an antenna among the multiple antennas that supports the current working frequency band and uses a reference current corresponding to the target transmission power that is less than the first actual current.

As shown in FIG. 7A , it is a schematic diagram of an embodiment of a terminal device in an embodiment of the present application, which may include an antenna switching device as shown in FIG. 6 .

As shown in FIG7B , it is a schematic diagram of another embodiment of the terminal device in the embodiment of the present application. The following is a detailed introduction to the various components of the mobile phone in the terminal device in conjunction with FIG7B :

The RF circuit 710 can be used for receiving and sending signals during information transmission or calls. In particular, after receiving the downlink information of the base station, it is sent to the processor 780 for processing; in addition, the designed uplink data is sent to the base station. Generally, the RF circuit 710 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (Low Noise Amplifier, LNA), a duplexer, etc. In addition, the RF circuit 710 can also communicate with the network and other devices through wireless communication. The above wireless communication can use any communication standard or protocol, including but not limited to the Global System of Mobile communication (Global System of Mobile communication, 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), Long Term Evolution (Long Term Evolution, LTE), email, Short Messaging Service (SMS), etc.

The memory 720 can be used to store software programs and modules. The processor 780 executes various functional applications and data processing of the mobile phone by running the software programs and modules stored in the memory 720. The memory 720 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 720 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

The input unit 730 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the mobile phone. Specifically, the input unit 730 may include a touch panel 731 and other input devices 732. The touch panel 731, also known as a touch screen, can collect the user's touch operation on or near it (such as the user's operation on the touch panel 731 or near the touch panel 731 using any suitable object or accessory such as a finger, stylus, etc.), and drive the corresponding connection device according to a pre-set program. Optionally, the touch panel 731 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the processor 780, and can receive and execute commands sent by the processor 780. In addition, the touch panel 731 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 731, the input unit 730 may further include other input devices 732. Specifically, the other input devices 732 may include but are not limited to one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 740 can be used to display information input by the user or information provided to the user and various menus of the mobile phone. The display unit 740 may include a display panel 741, and optionally, the display panel 741 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc. Further, the touch panel 731 may cover the display panel 741, and when the touch panel 731 detects a touch operation on or near it, it is transmitted to the processor 780 to determine the type of the touch event, and then the processor 780 provides a corresponding visual output on the display panel 741 according to the type of the touch event. Although in FIG. 7B, the touch panel 731 and the display panel 741 are used as two independent components to realize the input and output functions of the mobile phone, in some embodiments, the touch panel 731 and the display panel 741 can be integrated to realize the input and output functions of the mobile phone.

The mobile phone may also include at least one sensor 750, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 741 according to the brightness of the ambient light, and the proximity sensor may turn off the display panel 741 and/or the backlight when the mobile phone is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can be configured in the mobile phone, such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be repeated here.

The audio circuit 760, the speaker 761, and the microphone 762 can provide an audio interface between the user and the mobile phone. The audio circuit 760 can transmit the received audio data to the speaker 761 after converting the received audio data into an electrical signal, which is converted into a sound signal for output; on the other hand, the microphone 762 converts the collected sound signal into an electrical signal, which is received by the audio circuit 760 and converted into audio data, and then the audio data is output to the processor 780 for processing, and then sent to another mobile phone through the RF circuit 710, or the audio data is output to the memory 720 for further processing.

Wi-Fi is a short-range wireless transmission technology. The mobile phone can help users send and receive emails, browse web pages, and access streaming media through the Wi-Fi module 770, which provides users with wireless broadband Internet access. Although FIG. 7B shows the Wi-Fi module 770, it is understandable that it is not a necessary component of the mobile phone and can be omitted as needed without changing the essence of the invention.

The processor 780 is the control center of the mobile phone. It uses various interfaces and lines to connect various parts of the entire mobile phone. By running or executing software programs and/or modules stored in the memory 720, and calling data stored in the memory 720, it executes various functions of the mobile phone and processes data, thereby monitoring the mobile phone as a whole. Optionally, the processor 780 may include one or more processing units; preferably, the processor 780 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 780.

The mobile phone also includes a power supply 790 (such as a battery) for supplying power to various components. Preferably, the power supply can be logically connected to the processor 780 through a power management system, so that the power management system can manage charging, discharging, power consumption and other functions.

Although not shown, the mobile phone may also include a camera, a Bluetooth module, etc., which will not be described in detail here.

In an embodiment of the present application, the terminal device includes multiple antennas;

Processor 780, configured to detect a target transmit power of a first antenna used in a current working frequency band and a corresponding first actual current;

The processor 780 is used to switch the first antenna to the second antenna when the first actual current is greater than the first preset current, and the RF circuit 710 is used to use the second antenna for communication, and the reference current corresponding to the target transmission power used by the second antenna is less than the first actual current; wherein the multiple antennas include the first antenna and the second antenna.

Optionally, in one implementation, the processor 780 is further configured to detect a second actual current corresponding to the target transmit power used by the second antenna;

The RF circuit 710 is further configured to continue using the second antenna for communication when the second actual current is less than the first actual current.

Optionally, in one implementation, the second antenna is an antenna among the multiple antennas that supports the current working frequency band and uses the smallest reference current corresponding to the target transmit power except the first antenna.

Optionally, in one implementation, the processor 780 is specifically configured to detect a target transmit power of a first antenna used in a current operating frequency band, and detect a first actual current corresponding to the target transmit power through a current detection module.

Optionally, in one implementation, the RF system includes an RF power supply, a power management integrated circuit PMIC and a current detection module, the current detection module is built into the RF power supply, or, the current detection module is built into the PMIC, or, the current detection module is connected between the RF power supply and the PMIC.

Optionally, in an implementation manner, the first antenna and the second antenna are antennas supported by the current working frequency band in a free space state; or,

The first antenna is an antenna supported by the current working frequency band in a free space state, and the second antenna is an antenna supported by the current working frequency band in a target state, and the target state is a free space state, a hand-held state, a horizontal screen state, or a charging state.

Optionally, in one implementation, the processor 780 is specifically used to select the second antenna and switch the first antenna to the second antenna when the first actual current meets a preset condition and is currently in a target state, the second antenna being an antenna among the multiple antennas that supports the current operating frequency band, and an antenna whose reference current corresponding to the target transmission power used in the target state is less than the first actual current.

Optionally, in one implementation, the processor 780 is further configured to switch the second antenna to the first antenna when the second actual current is greater than the first actual current, and the RF circuit 710 is further configured to use the first antenna for communication;

or,

The processor 780 is further configured to switch the second antenna to the first antenna and use the first antenna for communication when the duration of using the second antenna for communication exceeds a preset duration. Optionally, in one implementation, the multiple antennas include the first antenna, the second antenna, and the third antenna.

The processor 780 is also used to switch the second antenna to the third antenna when the second actual current is greater than the first actual current. The RF circuit 710 is also used to use the third antenna for communication. The third antenna is an antenna among the multiple antennas that supports the current operating frequency band and uses a reference current corresponding to the target transmit power that is less than the first actual current.

Optionally, in one implementation, the processor 780 is further configured to detect a fourth actual current corresponding to the target transmit power used by the third antenna;

The RF circuit 710 is further configured to continue using the third antenna for communication when the fourth actual current is less than the third actual current.

Optionally, in one implementation, the third antenna is an antenna among the multiple antennas that supports the current working frequency band and uses the smallest reference current corresponding to the target transmit power except the first antenna and the second antenna.

Optionally, in an implementation manner, the multiple antennas include the first antenna, the second antenna, and a third antenna.

The processor 780 is further configured to switch the second antenna to the first antenna when the second actual current is greater than the first actual current, and the RF circuit 710 is further configured to use the first antenna for communication;

The processor 780 is further configured to detect a third actual current corresponding to the target transmit power used by the first antenna;

The processor 780 is also used to switch the first antenna to the third antenna when the third actual current is greater than the second actual current. The RF circuit 710 is also used to use the third antenna for communication. The third antenna is an antenna among the multiple antennas that supports the current operating frequency band and uses a reference current corresponding to the target transmit power that is less than the first actual current.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk.

As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (15)

1. A method of antenna switching, the method being applied to a radio frequency system, the radio frequency system comprising a plurality of antennas, the method comprising:

detecting target transmitting power and corresponding first actual current of a first antenna used in a current working frequency band;

under the condition that the first actual current meets a preset condition, switching the first antenna into a second antenna, and using the second antenna to communicate, wherein the second antenna is an antenna which is supported in the current working frequency band in the plurality of antennas, and the reference current corresponding to the target transmitting power is smaller than the first actual current;

wherein the plurality of antennas includes the first antenna and the second antenna.

2. The method according to claim 1, wherein the method further comprises:

Detecting a second actual current corresponding to the target transmitting power used by the second antenna;

and continuing to use the second antenna for communication under the condition that the second actual current is smaller than the first actual current.

3. The method according to claim 1 or 2, wherein the second antenna is an antenna, among the plurality of antennas, supported in the current operating frequency band, except for the first antenna, where a reference current corresponding to the target transmit power is the smallest.

4. The method according to claim 1 or 2, wherein detecting the target transmit power and the corresponding first actual current of the first antenna used by the current operating frequency band comprises:

And detecting the target transmitting power of the first antenna used in the current working frequency band, and detecting a first actual current corresponding to the target transmitting power through a current detection module.

5. The method of claim 4, wherein the radio frequency system comprises a radio frequency power supply, a power management integrated circuit PMIC, and a current detection module, the current detection module being built into the radio frequency power supply, or the current detection module being built into the PMIC, or the current detection module being connected between the radio frequency power supply and the PMIC.

6. The method according to claim 1 or 2, wherein the first antenna and the second antenna are antennas supported by the current operating frequency band in a free space state; or alternatively

The first antenna is an antenna supported by the current working frequency band in a free space state, the second antenna is an antenna supported by the current working frequency band in a target state, and the target state is a free space state, a holding state, a horizontal screen state or a charging state.

7. The method of claim 6, wherein switching the first antenna to a second antenna if the first actual current meets a preset condition comprises:

and under the condition that the first actual current meets a preset condition and is in a target state, selecting the second antenna, and switching the first antenna into the second antenna.

8. The method according to claim 2, wherein the method further comprises:

Switching the second antenna to the first antenna and using the first antenna for communication under the condition that the second actual current is larger than the first actual current;

Or alternatively, the first and second heat exchangers may be,

And under the condition that the duration of the communication carried out by using the second antenna exceeds the preset duration, switching the second antenna into the first antenna, and carrying out the communication by using the first antenna.

9. The method of claim 1 or 2, wherein the plurality of antennas includes the first antenna, the second antenna, and a third antenna, the method further comprising:

And under the condition that the second actual current is larger than the first actual current, switching the second antenna into the third antenna, and using the third antenna to communicate, wherein the third antenna is an antenna which is supported in the current working frequency band in the plurality of antennas, and the reference current corresponding to the target transmitting power is smaller than the first actual current.

10. The method according to claim 9, wherein the method further comprises:

detecting a third actual current corresponding to the target transmitting power used by the third antenna;

and continuing to use the third antenna for communication under the condition that the third actual current is smaller than the first actual current.

11. The method of claim 9, wherein the third antenna is an antenna of the plurality of antennas that supports a minimum reference current corresponding to the target transmit power among the antennas in the current operating frequency band, except for the first antenna and the second antenna.

12. The method of claim 1 or 2, wherein the plurality of antennas includes the first antenna, the second antenna, and a third antenna, the method further comprising:

Switching the second antenna to the first antenna under the condition that the second actual current is larger than the first actual current, and using the first antenna to communicate;

detecting a fourth actual current corresponding to the target transmitting power used by the first antenna;

and under the condition that the fourth actual current is larger than the first actual current, switching the first antenna into the third antenna, and using the third antenna to communicate, wherein the third antenna is an antenna which is supported in the current working frequency band in the plurality of antennas, and the reference current corresponding to the target transmitting power is smaller than the first actual current.

13. An apparatus for antenna switching, the apparatus being applied to a radio frequency system, the radio frequency system comprising a plurality of antennas, the apparatus comprising:

The detection module is used for detecting target transmitting power of the first antenna used in the current working frequency band and corresponding first actual current;

The switching module is used for switching the first antenna into a second antenna under the condition that the first actual current is larger than a first preset current, and the communication module is used for communicating by using the second antenna, wherein the reference current corresponding to the target transmitting power used by the second antenna is smaller than the first actual current;

wherein the plurality of antennas includes the first antenna and the second antenna.

14. A terminal device comprising a memory and a processor, the memory storing a computer program executable on the processor, the terminal device implementing the method of any of claims 1-12 when the program is executed.

15. A computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the method according to any of claims 1-12.