CN108990140B

CN108990140B - Method for determining radio frequency power and electronic equipment

Info

Publication number: CN108990140B
Application number: CN201811013611.4A
Authority: CN
Inventors: 刘晓威
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2021-08-17
Anticipated expiration: 2038-08-31
Also published as: CN108990140A

Abstract

The disclosure provides a method for determining radio frequency power and electronic equipment, and belongs to the technical field of electronics. The method comprises the following steps: the method comprises the steps of obtaining a radio frequency power index, corresponding transmission power and out-of-band interference, reducing the radio frequency power index at least once when the out-of-band interference does not belong to a preset interference range, obtaining the reduced radio frequency power index and the corresponding transmission power and the out-of-band interference, and establishing a mapping relation between the reduced radio frequency power index and the corresponding transmission power when the out-of-band interference belongs to the preset interference range; and inquiring the established mapping relation according to the target transmitting power belonging to the preset power range to obtain a corresponding radio frequency power index and determine the radio frequency power. According to the method and the device, after the mapping relation is inquired and the radio frequency power is determined according to the target transmitting power, the situation that the out-of-band interference does not belong to the preset interference range can not occur when the device works according to the radio frequency power, power calibration does not need to be carried out again, and time is saved.

Description

Method for determining radio frequency power and electronic equipment

Technical Field

The present disclosure relates to the field of electronic technologies, and in particular, to a method for determining radio frequency power and an electronic device.

Background

The present electronic device is generally configured with an antenna unit, and the antenna unit implements a transceiving function. The transmission power of the antenna unit is an important index of the electronic device, and the performance of the electronic device is affected by the transmission power. Therefore, power calibration is required before the electronic device is put into use, and it is ensured that the transmission power of the electronic device falls within a normal power range.

The electronic equipment comprises a transceiver, a power amplifier and an antenna unit, wherein the output end of the transceiver is connected with the input end of the power amplifier, and the output end of the power amplifier is connected with the antenna unit. In the process of power calibration of the electronic device, a radio frequency power index is determined, the radio frequency power index is used for indicating the size of radio frequency power, the transceiver works according to the radio frequency power, the radio frequency power is input into the power amplifier, the amplified power is output to the antenna unit after being amplified by the power amplifier, therefore, the amplified power is the transmitting power of the antenna unit, and the electronic device establishes a mapping relation between the radio frequency power index and the transmitting power. Then, the electronic device may reduce the radio frequency power index for multiple times, and establish a mapping relationship respectively, so that the mapping relationship includes multiple radio frequency power indexes and corresponding transmission powers. The electronic device can determine a target transmitting power belonging to the power range, and query the mapping relation according to the target transmitting power, so that the radio frequency power index corresponding to the target transmitting power can be obtained, the power calibration is completed, and the transceiver can work according to the radio frequency power corresponding to the determined radio frequency power index in the subsequent process.

Disclosure of Invention

In order to overcome the problems in the related art, the present disclosure provides a method for determining radio frequency power and an electronic device, where the technical scheme is as follows:

in a first aspect, a method for determining radio frequency power is provided, and is applied to an electronic device, where the electronic device includes a processor, a transceiver, a power amplifier, and an antenna unit, the processor is connected to an input of the transceiver, an output of the transceiver is connected to an input of the power amplifier, and an output of the power amplifier is connected to the antenna unit;

the transceiver is used for determining adopted radio frequency power according to the radio frequency power index and transmitting the radio frequency power to the power amplifier, and the power amplifier is used for amplifying the radio frequency power of the transceiver to obtain the transmitting power of the antenna unit; the method comprises the following steps:

acquiring a radio frequency power index, and corresponding transmitting power and out-of-band interference, wherein the out-of-band interference is obtained by calculation according to the transmitting power and the power on an adjacent channel when the transmitting power is adopted;

when the out-of-band interference does not belong to a preset interference range, reducing the radio frequency power index at least once, acquiring the reduced radio frequency power index, corresponding transmission power and out-of-band interference, and when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range, establishing a mapping relation between the reduced radio frequency power index and the corresponding transmission power;

and inquiring the established mapping relation according to the target transmitting power belonging to a preset power range to obtain a radio frequency power index corresponding to the target transmitting power, and determining the radio frequency power indicated by the radio frequency power index.

In one possible implementation, the method further includes:

when the out-of-band interference belongs to the preset interference range, establishing a mapping relation between the radio frequency power index and the corresponding transmitting power;

and executing the step of reducing the radio frequency power index at least once to obtain the reduced radio frequency power index and the corresponding transmitting power.

In a possible implementation manner, the out-of-band interference is represented by an adjacent channel leakage ratio ACLR having a negative correlation with the out-of-band interference, and the preset interference range is represented by a range in which the ACLR is not less than a preset threshold;

the at least one time of reducing the radio frequency power index, obtaining the reduced radio frequency power index, the corresponding transmission power and the out-of-band interference, and when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range, establishing a mapping relation between the reduced radio frequency power index and the corresponding transmission power, including:

reducing the radio frequency power index, and acquiring the reduced radio frequency power index and corresponding transmitting power and ACLR;

when the ACLR corresponding to the reduced radio frequency power index is not less than the preset threshold value, establishing a mapping relation between the reduced radio frequency power index and the corresponding transmitting power;

and continuously reducing the radio frequency power index, acquiring the continuously reduced radio frequency power index and corresponding transmitting power and ACLR, and establishing a mapping relation between the continuously reduced radio frequency power index and the corresponding transmitting power.

In one possible implementation, the reducing the rf power index includes: reducing the radio frequency power index according to a first amplitude under the condition that the ACLR corresponding to the radio frequency power index is smaller than the preset threshold;

the continuing to decrease the radio frequency power index comprises: and reducing the radio frequency power index according to a second amplitude under the condition that the ACLR corresponding to the radio frequency power index is not less than the preset threshold, wherein the second amplitude is not more than the first amplitude.

In a possible implementation manner, the establishing a mapping relationship between the reduced rf power index and the corresponding transmit power when the out-of-band interference corresponding to the reduced rf power index belongs to the preset interference range includes:

and when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range and the transmitting power corresponding to the reduced radio frequency power index belongs to the preset power range, establishing a mapping relation between the reduced radio frequency power index and the corresponding transmitting power.

In a possible implementation manner, the electronic device further includes a coupler, an output terminal of the power amplifier is connected to an input terminal of the coupler, a first output terminal of the coupler is connected to the antenna unit, and a second output terminal of the coupler is connected to the transceiver;

the coupler is used for dividing the power output by the power amplifier into feedback power output to the transceiver and transmitting power output to the antenna unit, wherein the proportion of the feedback power is a first proportion, the proportion of the transmitting power is a second proportion, and the sum of the first proportion and the second proportion is 1.

In one possible implementation, the out-of-band interference is represented by an adjacent channel leakage ratio ACLR that is inversely related to the out-of-band interference; the obtaining of the radio frequency power index, and the corresponding transmission power and out-of-band interference includes:

determining, by the transceiver, a radio frequency power from the radio frequency power index;

amplifying the radio frequency power through the power amplifier to obtain amplified power;

calculating the product of the amplified power and the first proportion through the coupler to obtain feedback power, wherein the feedback power is used for indicating the size of the transmitting power;

and obtaining the feedback power through the transceiver, calculating the product of the power on the adjacent channel and the first proportion, and calculating the proportion between the feedback power and the power obtained by the product to obtain the adjacent channel leakage ratio ACLR.

In a second aspect, an electronic device is provided, the electronic device comprising: the antenna comprises a processor, a transceiver, a power amplifier and an antenna unit, wherein the processor is connected with the input end of the transceiver, the output end of the transceiver is connected with the input end of the power amplifier, and the output end of the power amplifier is connected with the antenna unit;

the transceiver is used for determining adopted radio frequency power according to the radio frequency power index and transmitting the radio frequency power to the power amplifier;

the power amplifier is used for amplifying the radio frequency power of the transceiver to obtain the transmitting power of the antenna unit;

the transceiver is further configured to obtain the radio frequency power index, and the corresponding transmission power and out-of-band interference, where the out-of-band interference is calculated according to the transmission power and power on an adjacent channel when the transmission power is adopted;

the processor is used for determining that the out-of-band interference does not belong to a preset interference range;

the transceiver is also used for reducing the radio frequency power index at least once, and acquiring the reduced radio frequency power index, corresponding transmitting power and out-of-band interference;

the processor is further configured to establish a mapping relationship between the reduced radio frequency power index and a corresponding transmission power when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range;

the processor is further configured to query the established mapping relation according to a target transmitting power belonging to a preset power range, obtain a radio frequency power index corresponding to the target transmitting power, and determine the radio frequency power indicated by the radio frequency power index.

In a possible implementation manner, the processor is further configured to establish a mapping relationship between the radio frequency power index and a corresponding transmission power when the out-of-band interference belongs to the preset interference range;

the transceiver is further configured to perform the at least one step of reducing the rf power index, and obtaining a reduced rf power index and a corresponding transmit power.

the transceiver is also used for reducing the radio frequency power index and acquiring the reduced radio frequency power index and corresponding transmitting power and ACLR;

the processor is further configured to establish a mapping relationship between the reduced radio frequency power index and corresponding transmission power when the ACLR corresponding to the reduced radio frequency power index is not less than the preset threshold;

the transceiver is also used for continuously reducing the radio frequency power index and acquiring the continuously reduced radio frequency power index and corresponding transmitting power and ACLR;

the processor is further configured to establish a mapping relationship between the radio frequency power index after the continuing reduction and the corresponding transmission power.

In one possible implementation, the transceiver is further configured to:

reducing the radio frequency power index according to a first amplitude under the condition that the ACLR corresponding to the radio frequency power index is smaller than the preset threshold;

and reducing the radio frequency power index according to a second amplitude under the condition that the ACLR corresponding to the radio frequency power index is not less than the preset threshold, wherein the second amplitude is not more than the first amplitude.

In a possible implementation manner, the processor is further configured to establish a mapping relationship between the reduced radio frequency power index and corresponding transmission power when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range and the transmission power corresponding to the reduced radio frequency power index belongs to the preset power range.

In one possible implementation, the electronic device further includes: the output end of the power amplifier is connected with the input end of the coupler, the first output end of the coupler is connected with the antenna unit, and the second output end of the coupler is connected with the transceiver;

In one possible implementation, the out-of-band interference is represented by an adjacent channel leakage ratio ACLR that is inversely related to the out-of-band interference;

the coupler is further configured to calculate a product of the amplified power and the first ratio to obtain a feedback power, where the feedback power is used to indicate the magnitude of the transmit power;

the transceiver is further configured to obtain the feedback power, calculate a product of the power on the adjacent channel and the first ratio, and calculate a ratio between the feedback power and the power obtained by the product, to obtain an adjacent channel leakage ratio ACLR.

The method and the electronic device provided by the embodiment of the disclosure obtain the radio frequency power index and the corresponding transmission power and the out-of-band interference, reduce the radio frequency power index at least once when the out-of-band interference does not belong to the preset interference range, obtain the reduced radio frequency power index and the corresponding transmission power and the out-of-band interference, establish a mapping relation between the reduced radio frequency power index and the corresponding transmission power when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range, query the established mapping relation according to the target transmission power belonging to the preset power range, obtain the radio frequency power index corresponding to the target transmission power, and determine the radio frequency power indicated by the radio frequency power index, thereby completing the power calibration. The calculation of the out-of-band interference is added in the power calibration process, the mapping relation is not established when the out-of-band interference does not belong to the preset interference range, and the mapping relation is established only when the out-of-band interference belongs to the preset interference range, so that the condition that the out-of-band interference does not belong to the preset interference range can not occur when the out-of-band interference works according to the radio frequency power after the mapping relation is inquired and the radio frequency power is determined according to the target emission power, the power calibration does not need to be carried out again, and the time is saved.

Drawings

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

FIG. 1 is a schematic diagram illustrating the structure of an electronic device in accordance with an exemplary embodiment;

FIG. 2 is a schematic diagram illustrating another electronic device according to an example embodiment;

FIG. 3 is a flow chart illustrating a method of determining radio frequency power in accordance with an exemplary embodiment;

FIG. 4 is a flow chart illustrating a method of determining radio frequency power in accordance with an exemplary embodiment;

FIG. 5 is a schematic diagram illustrating an operational flow in accordance with an exemplary embodiment;

fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

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

Fig. 1 is a schematic structural diagram of an electronic device according to an exemplary embodiment. As shown in fig. 1, the electronic device includes a processor 101, a transceiver 102, a power amplifier 103, and an antenna unit 104.

The processor 101 is connected to an input terminal of the transceiver 102, an output terminal of the transceiver 102 is connected to an input terminal of the power amplifier 103, and an output terminal of the power amplifier 103 is connected to the antenna unit 104.

The processor 101 is used to control the antenna unit 104 to receive signals or transmit signals through the transceiver 102. The transceiver 102 is configured to determine the rf power to be used based on the rf power index and operate at the rf power. The transceiver 102 also transmits the rf power to the power amplifier 103, the power amplifier 103 is configured to amplify the rf power and transmit the amplified power to the antenna unit 104, the transmit power of the antenna unit 104 can be determined according to the amplified power, and the out-of-band interference can be calculated according to the transmit power and the power on the adjacent channel. And the processor 101 is further configured to determine whether the calculated out-of-band interference belongs to a preset interference range in the power calibration process, so as to establish a mapping relationship between the radio frequency power index and the transmission power under the condition that the out-of-band interference belongs to the preset interference range.

In a possible implementation manner, as shown in fig. 2, the electronic device further includes a coupler 201, an output terminal of the power amplifier 103 is connected to an input terminal of the coupler 201, a first output terminal of the coupler 201 is connected to the antenna unit 104, and a second output terminal of the coupler 201 is connected to the transceiver 102.

The coupler 201 is configured to divide the power output by the power amplifier 103 into two paths, one path is output to the antenna unit 104 through a first output terminal of the coupler 201 and is used as the transmission power of the antenna unit 104, and the other path is output to the transceiver 102 through a second output terminal of the coupler 201 and is used as the feedback power, and the transceiver 102 can determine the actual transmission power of the antenna unit 104 according to the feedback power.

The proportion of the feedback power is a first proportion, the proportion of the transmission power is a second proportion, and the sum of the first proportion and the second proportion is 1.

In a possible implementation manner, the processor 101 is further configured to establish a mapping relationship between the radio frequency power index and the corresponding transmission power when the out-of-band interference belongs to a preset interference range;

the transceiver 102 is further configured to perform at least one step of reducing the rf power index, and obtaining the reduced rf power index and a corresponding transmission power.

the transceiver 102 is further configured to reduce the rf power index, and obtain the reduced rf power index and the corresponding transmit power and ACLR;

the processor 101 is further configured to establish a mapping relationship between the reduced radio frequency power index and the corresponding transmission power when the ACLR corresponding to the reduced radio frequency power index is not less than a preset threshold;

the transceiver 102 is further configured to continuously reduce the radio frequency power index, and obtain the radio frequency power index after continuous reduction and corresponding transmission power and ACLR;

the processor 101 is further configured to establish a mapping relationship between the radio frequency power index after the further reduction and the corresponding transmission power.

In one possible implementation, the transceiver 102 is further configured to:

reducing the radio frequency power index according to the first amplitude under the condition that the ACLR corresponding to the radio frequency power index is smaller than a preset threshold;

and under the condition that the ACLR corresponding to the radio frequency power index is not less than a preset threshold value, reducing the radio frequency power index according to a second amplitude, wherein the second amplitude is not more than the first amplitude.

In a possible implementation manner, the processor 101 is further configured to establish a mapping relationship between the reduced rf power index and the corresponding transmission power when the out-of-band interference corresponding to the reduced rf power index belongs to a preset interference range and the transmission power corresponding to the reduced rf power index belongs to a preset power range.

In one possible implementation, the electronic device further includes: the output end of the power amplifier 103 is connected with the input end of the coupler 201, the first output end of the coupler 201 is connected with the antenna unit 104, and the second output end of the coupler 201 is connected with the transceiver 102;

the coupler 201 is configured to divide the power output by the power amplifier 103 into a feedback power output to the transceiver 102 and a transmission power output to the antenna unit 104, where a ratio of the feedback power is a first ratio, a ratio of the transmission power is a second ratio, and a sum of the first ratio and the second ratio is 1.

the coupler 201 is further configured to calculate a product of the amplified power and the first ratio to obtain a feedback power, where the feedback power is used to indicate a magnitude of the transmission power;

the transceiver 102 is further configured to obtain the feedback power, calculate a product of the power on the adjacent channel and the first ratio, and calculate a ratio between the feedback power and the power obtained by the product, so as to obtain an adjacent channel leakage ratio ACLR.

Fig. 3 is a flowchart illustrating a method for determining radio frequency power, applied to an electronic device, according to an exemplary embodiment, and as shown in fig. 3, the method includes the following steps:

in step 301, the rf power index, and the corresponding transmit power and out-of-band interference are obtained, where the out-of-band interference is calculated according to the transmit power and the power on the adjacent channel when the transmit power is used.

In step 302, when the out-of-band interference does not belong to the preset interference range, the radio frequency power index is reduced at least once, the reduced radio frequency power index and the corresponding transmission power and the out-of-band interference are obtained, and when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range, a mapping relation between the reduced radio frequency power index and the corresponding transmission power is established.

In step 303, the established mapping relationship is queried according to the target transmission power belonging to the preset power range, so as to obtain the radio frequency power index corresponding to the target transmission power, and determine the radio frequency power indicated by the radio frequency power index.

The method provided by the embodiment of the disclosure includes obtaining a radio frequency power index and corresponding transmission power and out-of-band interference, reducing the radio frequency power index at least once when the out-of-band interference does not belong to a preset interference range, obtaining the reduced radio frequency power index and corresponding transmission power and out-of-band interference, establishing a mapping relation between the reduced radio frequency power index and corresponding transmission power when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range, querying the established mapping relation according to target transmission power belonging to the preset power range, obtaining the radio frequency power index corresponding to the target transmission power, and determining the radio frequency power indicated by the radio frequency power index, thereby completing power calibration. The calculation of the out-of-band interference is added in the power calibration process, the mapping relation is not established when the out-of-band interference does not belong to the preset interference range, and the mapping relation is established only when the out-of-band interference belongs to the preset interference range, so that the condition that the out-of-band interference does not belong to the preset interference range can not occur when the out-of-band interference works according to the radio frequency power after the mapping relation is inquired and the radio frequency power is determined according to the target emission power, the power calibration does not need to be carried out again, and the time is.

In one possible implementation, the method further includes:

when the out-of-band interference belongs to a preset interference range, establishing a mapping relation between a radio frequency power index and corresponding transmitting power;

and executing at least one step of reducing the radio frequency power index, and acquiring the reduced radio frequency power index and the corresponding transmitting power.

reducing the radio frequency power index at least once, obtaining the reduced radio frequency power index, the corresponding transmitting power and the out-of-band interference, and when the out-of-band interference corresponding to the reduced radio frequency power index belongs to a preset interference range, establishing a mapping relation between the reduced radio frequency power index and the corresponding transmitting power, wherein the mapping relation comprises the following steps:

when the ACLR corresponding to the reduced radio frequency power index is not less than a preset threshold value, establishing a mapping relation between the reduced radio frequency power index and the corresponding transmitting power;

and continuously reducing the radio frequency power index, acquiring the continuously reduced radio frequency power index and the corresponding transmitting power and ACLR, and establishing a mapping relation between the continuously reduced radio frequency power index and the corresponding transmitting power.

In one possible implementation, reducing the rf power index includes: reducing the radio frequency power index according to the first amplitude under the condition that the ACLR corresponding to the radio frequency power index is smaller than a preset threshold;

continuing to decrease the radio frequency power index, comprising: and under the condition that the ACLR corresponding to the radio frequency power index is not less than a preset threshold value, reducing the radio frequency power index according to a second amplitude, wherein the second amplitude is not more than the first amplitude.

In a possible implementation manner, when the out-of-band interference corresponding to the reduced rf power index belongs to a preset interference range, establishing a mapping relationship between the reduced rf power index and the corresponding transmit power includes:

and when the out-of-band interference corresponding to the reduced radio frequency power index belongs to a preset interference range and the transmitting power corresponding to the reduced radio frequency power index belongs to a preset power range, establishing a mapping relation between the reduced radio frequency power index and the corresponding transmitting power.

In one possible implementation, the out-of-band interference is represented by an adjacent channel leakage ratio ACLR that is inversely related to the out-of-band interference; obtaining the radio frequency power index, and the corresponding transmission power and out-of-band interference, including:

determining, by the transceiver, a radio frequency power according to the radio frequency power index;

amplifying the radio frequency power through a power amplifier to obtain amplified power;

calculating the product of the amplified power and the first proportion through a coupler to obtain feedback power, wherein the feedback power is used for indicating the size of the transmitting power;

and obtaining feedback power through the transceiver, calculating the product of the power on the adjacent channel and the first proportion, and calculating the proportion between the feedback power and the power obtained by the product to obtain the adjacent channel leakage ratio ACLR.

Fig. 4 is a flowchart illustrating a method for determining radio frequency power according to an exemplary embodiment, which is applied to the electronic device shown in fig. 1 or fig. 2, and as shown in fig. 4, the method includes the following steps:

in step 401, the rf power index and the corresponding transmit power are obtained.

The electronic device can be a mobile phone, a computer or a personal computer and other devices with radio frequency functions, the electronic device comprises a transceiver, a power amplifier and an antenna unit, and the transceiver determines radio frequency power to be adopted according to a radio frequency power index and works according to the radio frequency power. And the transceiver also transmits the radio frequency power to a power amplifier, the power amplifier amplifies the radio frequency power and transmits the amplified power to an antenna unit, and the transmitting power of the antenna unit can be determined according to the amplified power.

The radio frequency power index corresponds to the radio frequency power one to one, the size of the radio frequency power index determines the size of the radio frequency power, and further determines the size of the transmitting power of the antenna unit, so that the electronic equipment can calibrate the transmitting power by adjusting the radio frequency power index in the power calibration process.

Therefore, the electronic device can randomly acquire a radio frequency power index, acquire the transmitting power of the antenna unit when the transceiver works according to the corresponding radio frequency power, and adjust the radio frequency power index subsequently to realize power calibration.

It should be noted that step 401 may be performed by a transceiver in the electronic device, or a processor in the electronic device, the processor is connected to the transceiver, the transceiver can control the antenna unit to receive signals or transmit signals, and the processor can determine or adjust the radio frequency power index to implement power calibration. The processor may be a Central Processing Unit (CPU) or other module with Processing function in the electronic device.

In step 402, out-of-band interference is calculated based on the transmit power and the power on the adjacent channel when the transmit power is used.

In the process of transmitting signals to the opposite terminal equipment, the electronic equipment transmits signals on a main channel between the electronic equipment and the opposite terminal equipment according to the transmitting power of the antenna unit. However, the electronic device and the peer device may include other channels besides the main channel, and the transmission process of the signal may be interfered by an adjacent channel of the main channel, so that the transmission power of the main channel may leak to the adjacent channel, that is, there is out-of-band interference on the main channel.

In the related art, in order to avoid the out-of-band interference being too high, the electronic device usually calculates the out-of-band interference according to the transmission power and the power on the adjacent channel after performing power calibration, and when the out-of-band interference does not belong to a preset interference range, it indicates that the main channel is interfered by the adjacent channel, and at this time, power calibration needs to be performed again, which consumes a long time.

In the embodiment of the disclosure, the influence of the out-of-band interference may be considered in the process of power calibration, after the radio frequency power index and the corresponding transmission power are determined each time, the mapping relationship between the radio frequency power index and the corresponding transmission power is not directly established, but the out-of-band interference is calculated first, only when the calculated out-of-band interference belongs to a preset interference range, it is indicated that the out-of-band interference meets the requirement, at this time, the mapping relationship between the radio frequency power index and the corresponding transmission power is established, and when the calculated out-of-band interference does not belong to the preset interference range, the mapping relationship between the radio frequency power index and the corresponding transmission power is not established, so that when the power calibration is performed according to the mapping relationship, the situation that the out-of-band interference does not meet the requirement can be avoided.

The preset interference range refers to a range to which out-of-band interference meeting requirements belongs, and can be determined by the electronic device according to requirements for the out-of-band interference or set by a technician.

In one possible implementation, the out-of-band interference may be represented by ACLR, which is the ratio of the transmit power to the power that falls on the adjacent channel, with higher power on the adjacent channel indicating higher out-of-band interference and lower ACLR. Since the out-of-band interference is inversely related to ACLR, the preset interference range may be represented by a range not less than a preset threshold, which may be determined by the electronic device according to the requirement for the out-of-band interference or set by a technician. When the ACLR is not less than the preset threshold, it indicates that the out-of-band interference belongs to the preset interference range, and meets the requirements of the electronic device, and when the ACLR is less than the preset threshold, it indicates that the out-of-band interference does not belong to the preset interference range, and does not meet the requirements of the electronic device.

For example, the ACLR of a WCDMA (Wideband Code Division Multiple Access) communication system is 32.5, and when the ACLR is not less than 32.5, the out-of-band interference of the electronic device meets the requirement.

When calculating the out-of-band interference, the electronic device obtains the transmission power and the power on the adjacent channel when adopting the transmission power, and calculates the ratio between the transmission power and the power on the adjacent channel to obtain the out-of-band interference.

In a possible implementation manner, referring to fig. 2, the electronic device further includes a coupler, an output terminal of the power amplifier is connected to an input terminal of the coupler, a first output terminal of the coupler is connected to the antenna unit, and a second output terminal of the coupler is connected to the transceiver.

The power amplifier is used for transmitting the amplified power to the coupler, the coupler divides the input power into feedback power and transmitting power, the transmitting power is output to the antenna unit through a first output end of the coupler, and the feedback power is output to the transceiver through a second output end of the coupler. The proportion of the feedback power is a first proportion, the proportion of the transmission power is a second proportion, and the sum of the first proportion and the second proportion is 1. And the second ratio is greater than the first ratio, e.g., the first ratio is 0.01 and the second ratio is 0.99. Because a fixed proportion exists between the transmitting power and the feedback power, the feedback power can be used for indicating the transmitting power, and the transmitting power can be determined according to the feedback power after the transceiver receives the feedback power.

Therefore, the transceiver determines the radio frequency power according to the radio frequency power index, outputs the radio frequency power to the power amplifier, the power amplifier amplifies the radio frequency power to obtain amplified power, outputs the amplified power to the coupler, the coupler calculates the product of the amplified power and the first proportion to obtain feedback power, calculates the product of the amplified power and the second proportion to obtain transmitting power, outputs the feedback power to the transceiver, and outputs the transmitting power to the antenna unit. The transceiver obtains the feedback power and the power on the adjacent channel, calculates the product of the power on the adjacent channel and the first proportion, and calculates the proportion between the feedback power and the power obtained by the product to obtain the ACLR.

In step 403, when the out-of-band interference does not belong to the preset interference range, the radio frequency power index is reduced at least once, the reduced radio frequency power index, the corresponding transmission power and the out-of-band interference are obtained, and when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range, a mapping relationship between the reduced radio frequency power index and the corresponding transmission power is established.

After calculating the out-of-band interference, the electronic device judges whether the out-of-band interference belongs to a preset interference range. When the out-of-band interference does not belong to the preset interference range, the out-of-band interference can not meet the requirement if the emission power corresponding to the current radio frequency power index is adopted, and therefore the mapping relation between the radio frequency power index and the emission power is not established.

In addition, in order to reselect other transmission powers, the electronic device reduces the radio frequency power index at least once, adjusts the radio frequency power index, and further adjusts the transmission power so as to find the transmission power meeting the out-of-band interference requirement.

Referring to fig. 5, after reducing the radio frequency power index each time, obtaining the reduced radio frequency power index and the corresponding transmission power and out-of-band interference, continuously judging whether the out-of-band interference belongs to the preset interference range, if not, continuously reducing the radio frequency power index until the current out-of-band interference belongs to the preset interference range, which indicates that the out-of-band interference can be guaranteed to meet the requirement if the current transmission power is adopted, and thus establishing a mapping relationship between the reduced radio frequency power index and the corresponding transmission power. And then, reducing the radio frequency power index at least once, and acquiring the reduced radio frequency power index and the corresponding transmission power so as to determine whether to continuously establish the mapping relation.

For example, a first radio frequency power index is initially determined, a first out-of-band interference corresponding to the first radio frequency power index is calculated, if the first out-of-band interference does not belong to a preset interference range, the radio frequency power index is reduced to obtain a second radio frequency power index, a second out-of-band interference corresponding to the second radio frequency power index is calculated, if the second out-of-band interference does not belong to the preset interference range, the second radio frequency power index is continuously reduced to obtain a third radio frequency power index, a third out-of-band interference corresponding to the third radio frequency power index is continuously calculated, and the like, and a mapping relation between the current radio frequency power index and corresponding transmission power is established until the calculated out-of-band interference belongs to the preset interference range.

In practical applications, the electronic device may be reduced one or more times to determine the required transmission power and out-of-band interference, so as to establish multiple sets of mapping relationships. The specific reduction times are determined according to the actual numerical value of the radio frequency power index, the reduction amplitude and the preset interference range.

In one possible implementation, each time the radio frequency power index is reduced, it may be reduced according to a fixed amplitude, which may be determined according to the requirements for accuracy and for the amount of computation.

The embodiment of the disclosure considers that the smaller the radio frequency power index is, the lower the out-of-band interference is, so that the out-of-band interference is adjusted by reducing the radio frequency power index once or more times under the condition that the out-of-band interference does not meet the requirement, and only when the out-of-band interference meets the requirement, the mapping relationship between the radio frequency power index and the corresponding transmission power is established.

In a possible implementation manner, the out-of-band interference is represented by ACLR, and the preset interference range is represented by a range not smaller than a preset threshold, the electronic device decreases the radio frequency power index each time, obtains the decreased radio frequency power index and the corresponding transmission power and ACLR, does not establish a mapping relationship between the decreased radio frequency power index and the corresponding transmission power when the ACLR corresponding to the decreased radio frequency power index is smaller than the preset threshold, and continues to decrease the radio frequency power index until, when the ACLR corresponding to the decreased radio frequency power index is not smaller than the preset threshold, establishes a mapping relationship between the decreased radio frequency power index and the corresponding transmission power.

The transmitting power of the electronic equipment is reduced by reducing the radio frequency power index, the power on the adjacent channel is reduced, the ACLR is improved, and the transmitting power of the ACLR not less than the preset threshold value can be acquired.

In addition, in order to obtain a mapping relation that more ACLRs meet the requirements, even after the radio frequency power index that the ACLR is not less than the preset threshold is determined and the mapping relation between the radio frequency power index and the corresponding transmission power is established, the electronic device may further decrease the radio frequency power index, and obtain the radio frequency power index after the decrease, the corresponding transmission power and the ACLR. Since the smaller the radio frequency power index is, the larger the ACLR is, once a certain ACLR is not smaller than the preset threshold, the ACLR obtained by subsequently continuously reducing the radio frequency power index is inevitably not smaller than the preset threshold, and therefore, the mapping relationship between the continuously reduced radio frequency power index and the corresponding transmission power is directly established without judgment.

In a possible implementation manner, before determining the radio frequency power index of the ACLR not less than the preset threshold, the radio frequency power index may be decreased according to the first amplitude so as to adjust the ACLR, and the radio frequency power index of the ACLR not less than the preset threshold is quickly determined. After determining the rf power index with ACLR not less than the preset threshold, in order to obtain multiple sets of mapping relationships as much as possible, the rf power index may be reduced according to the second amplitude. Wherein the second amplitude is not greater than the first amplitude. By reducing the amplitude, the accuracy of the electronic device calibration can be improved.

For example, assume that the preset threshold is 32.5, the first amplitude is 2, and the second amplitude is 1. The radio frequency power index is set to 61, the acquired transmitting power is 31.2dBm (decibel-milliwatt), and the calculated ACLR is less than 32.5, so that the mapping relation between the radio frequency power index and the transmitting power is not established. And then, reducing the radio frequency power index once or for multiple times according to the first amplitude 2, acquiring corresponding transmitting power and calculating ACLR (adaptive Doppler current ratio) until the acquired transmitting power is 29.3dBm when the radio frequency power index is 57, and if the calculated ACLR is more than 32.5, establishing a mapping relation between the radio frequency power index 57 and the transmitting power 29.3 dBm. And then, the radio frequency power index is not reduced according to the first amplitude 2, but is reduced according to the second amplitude 1 once or for multiple times, the corresponding transmitting power is obtained, and the mapping relation between the radio frequency power index and the corresponding transmitting power is established. The mapping relationship established is shown in table 1, the radio frequency power indexes correspond to the transmission powers one by one, the radio frequency power indexes are arranged from high to low, and the corresponding transmission powers are also arranged from high to low.

TABLE 1

Radio frequency power index	Launch power (dBm)
		57	29.3
56	28.7
		55	28.1
54	26.9
		53	26.6
52	25.6
		51	24.3
50	23.2
		49	22.1

The electronic device sets a predetermined power range, which is a range to which the emission power of the electronic device normally operates, for example, the predetermined power range may be 5dBm-33 dBm. When power calibration is carried out, it is required to ensure that the adopted target transmitting power belongs to a preset power range, and a mapping relation is inquired according to the target transmitting power to obtain a corresponding radio frequency power. Then, when the transmission power does not belong to the preset power range, even if the corresponding mapping relationship is established, the mapping relationship does not need to be queried in the subsequent querying process.

Therefore, in order to reduce the data size of the mapping relationship and avoid occupying the storage space, after the radio frequency power index is reduced each time, the out-of-band interference and the transmission power corresponding to the reduced radio frequency power index are obtained, whether the out-of-band interference belongs to the preset interference range or not is judged, and whether the transmission power belongs to the preset power range or not is judged. And when the out-of-band interference corresponding to the reduced radio frequency power index belongs to a preset interference range and the transmitting power corresponding to the reduced radio frequency power index belongs to a preset power range, establishing a mapping relation between the reduced radio frequency power index and the corresponding transmitting power. When the out-of-band interference corresponding to the reduced radio frequency power index does not belong to the preset interference range or the corresponding transmitting power does not belong to the preset power range, the mapping relation is not required to be established.

In a possible implementation manner, the out-of-band interference is represented by ACLR, the preset interference range is represented by a range not smaller than a preset threshold, and the preset power range is usually set with minimum transmit power and maximum transmit power, so that when the out-of-band interference and the transmit power are considered comprehensively, when the ACLR and the transmit power corresponding to the radio frequency power index obtained at a certain time both meet requirements, the radio frequency power index may be further reduced, at this time, it may be ensured that the ACLR corresponding to the reduced radio frequency power index is not smaller than the preset threshold, but the transmit power corresponding to the reduced radio frequency power index may be reduced to be smaller than the minimum transmit power, resulting in the transmit power not belonging to the preset power range.

Therefore, once a certain ACLR is not less than the preset threshold, the ACLR obtained by subsequently continuing to reduce the rf power index is inevitably not less than the preset threshold, and therefore, it is not necessary to perform a determination, but it is still necessary to determine whether the transmission power belongs to the preset power range to determine whether to establish the mapping relationship.

In step 404, the established mapping relationship is queried according to the target transmission power belonging to the preset power range, so as to obtain the radio frequency power index corresponding to the target transmission power, and determine the radio frequency power indicated by the radio frequency power index.

The electronic equipment can determine a target transmitting power belonging to a preset power range according to requirements, query the established mapping relation to obtain a radio frequency power index corresponding to the target transmitting power, and determine the radio frequency power of the transceiver according to the radio frequency power index, so that the power output of the transceiver is ensured.

If the mapping relation does not contain the target transmitting power, the electronic equipment can redetermine another target transmitting power belonging to the preset power range, and the radio frequency power is determined after the mapping relation is inquired.

The method provided by the embodiment of the disclosure includes obtaining a radio frequency power index and corresponding transmission power and out-of-band interference, reducing the radio frequency power index at least once when the out-of-band interference does not belong to a preset interference range, obtaining the reduced radio frequency power index and corresponding transmission power and out-of-band interference, establishing a mapping relation between the reduced radio frequency power index and corresponding transmission power when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range, querying the established mapping relation according to target transmission power belonging to the preset power range, obtaining the radio frequency power index corresponding to the target transmission power, and determining the radio frequency power indicated by the radio frequency power index, thereby completing power calibration. According to the method, the test of the out-of-band interference is added while the power is calibrated, the mapping relation is not established when the out-of-band interference does not belong to the preset interference range, and the mapping relation is established only when the out-of-band interference belongs to the preset interference range, so that the condition that the out-of-band interference does not belong to the preset interference range can not occur when the out-of-band interference works according to the radio frequency power after the mapping relation is inquired and the radio frequency power is determined according to the target emission power, the power calibration does not need to be carried out again, the time is saved, and the electronic equipment leaving a factory can also work normally.

And the power output by the power amplifier is divided into feedback power output to the transceiver and transmission power output to the antenna unit through the coupler, and the magnitude of the transmission power is indicated by the feedback power, so that the transceiver can calculate out-of-band interference according to the feedback power, and the calculation of the out-of-band interference is added in the power calibration process.

And when the ACLR corresponding to the radio frequency power index is not less than the preset threshold, the radio frequency power index can be found as soon as possible by reducing the radio frequency power index with a larger amplitude, so that the calculation speed is increased, and when the ACLR corresponding to the radio frequency power index is not less than the preset threshold, the radio frequency power index with a smaller amplitude is reduced, so that more mapping relations can be established, the corresponding radio frequency power index can be conveniently inquired according to the target transmission power, and the accuracy is improved.

Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. For example, the electronic device 600 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 6, the electronic device 600 may include one or more of the following components: processing component 602, memory 604, power component 606, multimedia component 608, audio component 610, input/output (I/O) interface 612, sensor component 614, and communication component 616.

The processing component 602 generally controls overall operation of the electronic device 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 602 can include one or more modules that facilitate interaction between the processing component 602 and other components. For example, the processing component 602 can include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.

The memory 604 is configured to store various types of data to support operations at the electronic device 600. Examples of such data include instructions for any application or method operating on the electronic device 600, contact data, phonebook data, messages, pictures, videos, and the like. The memory 604 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power supply component 606 provides power to the various components of the electronic device 600. The power components 606 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 600.

The multimedia component 608 includes a screen that provides an output interface between the electronic device 600 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 608 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the electronic device 600 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 610 is configured to output and/or input audio signals. For example, the audio component 610 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 600 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 604 or transmitted via the communication component 616. In some embodiments, audio component 610 further includes a speaker for outputting audio signals.

The I/O interface 612 provides an interface between the processing component 602 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 614 includes one or more sensors for providing status assessment of various aspects of the electronic device 600. For example, the sensor component 614 may detect an open/closed state of the electronic device 600, the relative positioning of components, such as a display and keypad of the electronic device 600, the sensor component 614 may also detect a change in the position of the electronic device 600 or a component of the electronic device 600, the presence or absence of user contact with the electronic device 600, the orientation or acceleration/deceleration of the electronic device 600, and a change in the temperature of the electronic device 600. The sensor assembly 614 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 614 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 616 is configured to facilitate communications between the electronic device 600 and other devices in a wired or wireless manner. The electronic device 600 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 further includes a Near Field Communication (NFC) module to facilitate short-range communications.

In an exemplary embodiment, the electronic device 600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the methods provided by the embodiments shown in fig. 3 and 4 and described above.

In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 604 comprising instructions, executable by the processor 620 of the electronic device 600 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

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

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

Claims

1. A method for determining radio frequency power is applied to an electronic device, wherein the electronic device comprises a processor, a transceiver, a power amplifier and an antenna unit, the processor is connected with an input end of the transceiver, an output end of the transceiver is connected with an input end of the power amplifier, and an output end of the power amplifier is connected with the antenna unit;

when the out-of-band interference does not belong to a preset interference range, not establishing a mapping relation between the radio frequency power index and the corresponding transmitting power, reducing the radio frequency power index at least once, obtaining the reduced radio frequency power index, the corresponding transmitting power and the out-of-band interference, and when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range, establishing the mapping relation between the reduced radio frequency power index and the corresponding transmitting power, wherein the preset interference range refers to a range to which the out-of-band interference meeting the requirement belongs;

inquiring the established mapping relation according to target transmitting power belonging to a preset power range, obtaining a radio frequency power index corresponding to the target transmitting power, and determining the radio frequency power indicated by the radio frequency power index, wherein the preset power range refers to the range to which the transmitting power of the electronic equipment belongs when the electronic equipment normally works;

when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range, establishing a mapping relation between the reduced radio frequency power index and the corresponding transmitting power, including:

2. The method of claim 1, further comprising:

3. The method of claim 1, wherein the out-of-band interference is represented by an Adjacent Channel Leakage Ratio (ACLR) having a negative correlation with the out-of-band interference, and wherein the preset interference range is represented by a range in which the ACLR is not less than a preset threshold;

4. The method of claim 3, wherein the reducing the radio frequency power index comprises: reducing the radio frequency power index according to a first amplitude under the condition that the ACLR corresponding to the radio frequency power index is smaller than the preset threshold;

5. The method of claim 1, wherein the electronic device further comprises a coupler, wherein an output of the power amplifier is connected to an input of the coupler, wherein a first output of the coupler is connected to the antenna element, and wherein a second output of the coupler is connected to the transceiver;

6. The method of claim 5, wherein the out-of-band interference is represented by an Adjacent Channel Leakage Ratio (ACLR) having a negative correlation with the out-of-band interference; the obtaining of the radio frequency power index, and the corresponding transmission power and out-of-band interference includes:

7. An electronic device, characterized in that the electronic device comprises: the antenna comprises a processor, a transceiver, a power amplifier and an antenna unit, wherein the processor is connected with the input end of the transceiver, the output end of the transceiver is connected with the input end of the power amplifier, and the output end of the power amplifier is connected with the antenna unit;

the processor is configured to determine that the out-of-band interference does not belong to a preset interference range, and not establish a mapping relationship between the radio frequency power index and a corresponding transmission power, where the preset interference range is a range to which the out-of-band interference meeting requirements belongs;

the processor is further configured to query the established mapping relationship according to a target transmission power belonging to a preset power range, obtain a radio frequency power index corresponding to the target transmission power, and determine the radio frequency power indicated by the radio frequency power index, where the preset power range is a range to which the transmission power of the electronic device during normal operation belongs;

the processor is further configured to establish a mapping relationship between the reduced radio frequency power index and corresponding transmission power when the out-of-band interference corresponding to the reduced radio frequency power index belongs to the preset interference range and the transmission power corresponding to the reduced radio frequency power index belongs to the preset power range.

8. The electronic device of claim 7, wherein the processor is further configured to establish a mapping relationship between the radio frequency power index and a corresponding transmit power when the out-of-band interference belongs to the preset interference range;

9. The electronic device of claim 7, wherein the out-of-band interference is represented by an Adjacent Channel Leakage Ratio (ACLR) having a negative correlation with the out-of-band interference, and wherein the preset interference range is represented by a range in which the ACLR is not less than a preset threshold;

10. The electronic device of claim 9, wherein the transceiver is further configured to:

11. The electronic device of claim 7, further comprising: the output end of the power amplifier is connected with the input end of the coupler, the first output end of the coupler is connected with the antenna unit, and the second output end of the coupler is connected with the transceiver;

12. The electronic device of claim 11, wherein the out-of-band interference is represented by an Adjacent Channel Leakage Ratio (ACLR) that is inversely related to the out-of-band interference;