CN112152648B - Radio frequency circuit, power adjusting method and communication terminal - Google Patents
Radio frequency circuit, power adjusting method and communication terminal Download PDFInfo
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- CN112152648B CN112152648B CN202010936625.4A CN202010936625A CN112152648B CN 112152648 B CN112152648 B CN 112152648B CN 202010936625 A CN202010936625 A CN 202010936625A CN 112152648 B CN112152648 B CN 112152648B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application relates to a radio frequency circuit, a power regulation method and a communication terminal, wherein the radio frequency circuit comprises: the power amplifier is arranged on a transmitting path of the radio frequency circuit and used for carrying out power amplification on the received radio frequency signal; the control module is connected with the power amplifier and used for acquiring first channel quality information of the current communication terminal and generating a control instruction according to the first channel quality information; the matching module is respectively connected with the power amplifier and the control module and used for receiving the control instruction and adjusting the load traction of the power amplifier according to the control instruction; the control module is further configured to calibrate power information of the power amplifier according to the load traction, so that optimal power consumption can be guaranteed without sacrificing communication performance of the communication terminal.
Description
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a radio frequency circuit, a power adjustment method, and a communication terminal.
Background
With the development of radio frequency technology, an Average Power Tracking (APT) technology has emerged, which is a technology for automatically adjusting the operating voltage of a Power Amplifier (PA) according to the previous output Power of the PA, in combination with its own parameters.
In a traditional communication terminal, the mapping relation between the output power of a power amplifier and the supply voltage is only suitable for a single communication scene, and the communication terminal cannot realize the balance optimization between the communication performance and the power consumption.
Disclosure of Invention
The embodiment of the application provides a radio frequency circuit, a power adjusting method and a communication terminal, which can ensure optimal power consumption under the condition of not sacrificing the communication performance of the communication terminal.
A radio frequency circuit for use in a communication terminal, the radio frequency circuit comprising:
the power amplifier is arranged on a transmitting path of the radio frequency circuit and used for carrying out power amplification on the received radio frequency signal;
the control module is used for acquiring first channel quality information of the current communication terminal and generating a control instruction according to the first channel quality information;
the matching module is respectively connected with the power amplifier and the control module and used for receiving the control instruction and adjusting the load traction of the power amplifier according to the control instruction; wherein the control module is further configured to calibrate power information of the power amplifier according to the load pull.
The radio frequency circuit comprises a power amplifier, a matching circuit and a control module, wherein the control module can correspondingly acquire first channel quality information of the communication terminal; the first channel quality information can be used for representing the environmental performance condition of an uplink channel when the communication terminal is in communication with the base station, and then the communication terminal can generate a corresponding control instruction according to the first channel quality information to control the matching module to adjust the load traction of the power amplifier, and meanwhile, the control module can adjust the power supply voltage of the power amplifier according to the load traction, and further adjust the power information of the transmitting signal to adjust the power consumption of the power amplifier, so that the optimal power consumption can be ensured under the condition that the communication performance (for example, the adjacent channel leakage ratio) of the communication terminal is not sacrificed, and the balance between the communication performance and the power consumption is realized.
A power adjustment method is applied to a communication terminal, and the method comprises the following steps:
acquiring first channel quality information of the current communication terminal;
generating a control instruction according to the first channel quality information;
and controlling a matching module to adjust the load traction of the power amplifier according to the control instruction so as to adjust the power information of the power amplifier.
According to the power adjusting method, the first channel quality information of the current communication terminal can be acquired, the control instruction is generated according to the first channel quality information, the matching module is controlled according to the control instruction to adjust the load traction of the power amplifier so as to adjust the power information of the power amplifier, the power consumption of the power amplifier can be adjusted, the optimal power consumption can be ensured under the condition that the communication performance (such as the adjacent channel leakage ratio) of the communication terminal is not sacrificed, and the balance between the communication performance and the power consumption is realized.
A communication terminal, comprising:
a radio frequency transceiver, and
in the rf circuit, the input terminal of the power amplifier of the rf circuit is connected to the rf transceiver.
The communication device can adjust the working voltage of the power amplifier based on the radio frequency circuit, and further change the power of the power amplifier, so that the optimal power consumption is ensured under the condition that the communication performance (such as adjacent channel leakage ratio) of the communication terminal is not sacrificed, and the balance between the communication performance and the power consumption is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of an embodiment of an RF circuit;
FIG. 2 is a block diagram of an RF circuit in another embodiment;
FIG. 3 is a block diagram of an RF circuit in yet another embodiment;
FIG. 4 is a block diagram of an RF circuit according to yet another embodiment;
FIG. 5 is a flow diagram of a power adjustment method in one embodiment;
FIG. 6 is a flow chart of a power regulation method in another embodiment;
fig. 7 is a flow diagram of generating a control instruction according to the first channel quality information in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It is to be understood that the terms "first", "second", and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of technical features being indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present application, "a plurality" means at least one, e.g., one, two, etc., unless explicitly specified otherwise.
As shown in fig. 1, an embodiment of the present application provides a radio frequency circuit. In one embodiment, the rf circuit 10 is applied to a communication terminal. The radio frequency circuit 10 includes a power amplifier 110, a matching module 120, and a control module 130.
And the power amplifier 110 is arranged on a transmission path of the radio frequency circuit and is used for performing power amplification on the received radio frequency signal. When the rf circuit 10 uses the transmission path to perform the transmission control of the rf signal, the power consumption of the rf circuit 10 is mainly concentrated on the power amplifier 110, and an average power tracking technique is generated to save power, which is also called an adaptive voltage Supply (adaptive voltage Supply), and is a technique for automatically adjusting the operating voltage of the power amplifier 110 according to the pre-output power of the power amplifier 110 and the parameters of the power amplifier 110. In a communication terminal using the APT technique, the rf circuit 10 adjusts the supply voltage VCC of the power amplifier 110 according to the average power level of the transmission power. The transmission power of the radio frequency signal output by the power amplifier 110 is positively correlated with the power supply voltage, that is, the larger the power supply voltage of the power amplifier 110 is, the higher the corresponding transmission power is, the smaller the power supply voltage of the power amplifier 110 is, and the lower the corresponding transmission power is, thereby achieving the effect of power saving.
And the control module 130 is connected to the matching module 120, and configured to acquire first channel quality information of the current communication terminal, and generate a control instruction according to the first channel quality information. The first Channel Quality information may be understood as a Channel Quality Indicator (CQI), and the uplink Channel condition is evaluated according to a value of the CQI. Correspondingly, the base station returns the first channel quality information obtained by measurement to the communication terminal to adjust the Modulation mode (Modulation) and the Code rate (Code rate) of the communication terminal. The correspondence between the channel quality indicator, the modulation mode, and the code rate is shown in table 1.
Table 1 correspondence table of channel quality indication, modulation mode, and code rate
| CQI | Max.SNR | Modulation | Code rate | |
| 1 | - | QPSK | 1/8 | |
| 2 | - | QPSK | 1/5 | |
| 3 | -2.1 | QPSK | 1/4 | |
| 4 | | QPSK | 1/3 | |
| 5 | 2.1 | QPSK | 1/2 | |
| 6 | 3.8dBm | QPSK | 2/3 | |
| 7 | 6dBm | QPSK | 4/5 | |
| 8 | 7.8 | 16QAM | 1/2 | |
| 9 | 9.9dBm | 16QAM | 2/3 | |
| 10 | 12.6dBm | 16QAM | 4/5 | |
| 11 | 15dBm | 16QAM | 2/3 |
As shown in table 1, the CQI has 11 values, and the larger the CQI is, the better the corresponding channel environment is, the more complex the supported modulation scheme is, and the higher the code rate is. Where, at max, SNR can be understood as the maximum Signal-to-noise ratio (SNR or S/N).
The matching module 120 is connected to the power amplifier 110 and the control module 130, respectively. The matching module 120 may be used to adjust the load pull of the power amplifier 110, i.e., the matching module 120 is used to adjust the impedance matching point of the power amplifier 110. Each impedance matching point corresponds to an Adjacent Channel Leakage Ratio (ACLR) of the communication terminal and current information of the power amplifier 110, wherein the Adjacent Channel Leakage Ratio is proportional to the current value. That is, the larger the adjacent channel leakage ratio, the larger the corresponding current value. The matching module 120 has a plurality of matching modes, and each matching mode is capable of matching a different impedance matching point of the power amplifier 110. Specifically, the matching module 120 may receive a control command sent by the control module 130, and adjust the load pulling of the power amplifier 110 according to the control command to adjust the power information of the power amplifier 110. The control command may carry matching mode information of the matching module 120, and according to the control command, the matching module 120 may select a corresponding matching mode to adjust the load pulling of the power amplifier 110. Meanwhile, the control module 130 may also adjust the operating voltage of the power amplifier 110 according to the current matching mode (i.e., the current impedance matching point of the power amplifier 110) to adjust the transmitting power of the power amplifier 110, so as to calibrate the power information of the power amplifier 110.
By adjusting the supply voltage or power information of the power amplifier 110, the power consumption (also referred to as power consumption) of the power amplifier 110 can be adjusted. The power supply voltage or the power information of the power amplifier 110 is positively correlated with the power consumption of the power amplifier 110, that is, the larger the power supply voltage or the power information of the power amplifier 110 is, the higher the power consumption of the power amplifier 110 is.
The radio frequency circuit 10 in this embodiment includes a power amplifier 110, a matching module 120, and a control module 130, where the control module 130 may correspondingly obtain first channel quality information of a communication terminal; the first channel quality information may be used to characterize an environmental performance status of an uplink channel of the communication terminal when the communication terminal communicates with the base station, and the communication terminal may generate a corresponding control instruction according to the first channel quality information to control the matching module 120 to adjust load pulling of the power amplifier 110, and meanwhile, the control module 130 may adjust a power supply voltage of the power amplifier 110 according to the load pulling, and further adjust power information of the transmission signal to adjust power consumption of the power amplifier 110, so as to ensure optimal power consumption without sacrificing communication performance (e.g., adjacent channel leakage ratio) of the communication terminal, and achieve balance between the communication performance and the power consumption.
In one embodiment, the rf circuit 10 further includes: and a filtering module 140 for performing filtering processing on the amplified radio frequency signal. The filtering module 140 may include a filter. The filter only allows the radio frequency signals of the preset frequency band to pass through. That is, if the rf circuit 10 is used to support the transceiving control of 5G signals, the filtering allows the signal path of the frequency band corresponding to the 5G signals. Illustratively, the filter may be a band pass filter, a low pass filter, a high pass filter, or the like. Optionally, the filtering module 140 further includes a duplexer. The duplexer corresponds to two filters, one of which can be set as a transmit filter and applied in the transmit path. Another may be provided as a receive filter applied in the receive path. It should be noted that, in the embodiment of the present application, the type of the filter is not further limited, and an appropriate filter may be selected according to the frequency band of the radio frequency signal to be filtered.
As shown in fig. 2, in one embodiment, the matching module 120 includes a first switching unit 121, a second switching unit 122, and a plurality of matching circuits 123. The matching circuits 123 are used to adjust the load pulling of the power amplifier 110, wherein one matching circuit 123 corresponds to one matching mode, that is, the impedance matching points that each matching circuit 123 can match are different.
Specifically, a first terminal of the first switch unit 121 is connected to the output terminal of the power amplifier 110, a selection terminal of the first switch unit 121 is connected to a selection terminal of the second switch unit 122 through a plurality of matching circuits 123, and a first terminal of the second switch unit 122 is connected to the filtering module 140.
The control end of the first switch unit and the control end of the second switch unit 122 are connected to the control module 130, and the control instruction output by the control module 130 can control the conduction channels of the first switch unit 121 and the second switch unit 122. That is, when the first switch unit 121 and the second switch unit 122 receive the corresponding control command, the channel between the first end and any second end of each switch unit may be selectively turned on, and further, the rf path where any matching circuit 123 is located may be selectively turned on.
The first switch unit 121 and the second switch unit 122 are both single-pole multi-throw switches. The number of the second terminals of the first switch units 121, the number of the second terminals of the second switch units 122, and the number of the matching circuits 123 are all equal. Illustratively, when the number of the matching circuits 123 is five, the first switching unit 121 and the second switching unit 122 thereof may both be switched by the radio frequency 1P 5T. A second terminal of the first switch unit 121 is connected to a second terminal of the second switch unit 122 via a matching circuit 123.
In one embodiment, the matching circuit 123 may be a pi-type matching circuit, a T-type matching circuit, or other types of matching circuits. For example, if the matching module 120 includes five matching circuits 123, wherein the five matching circuits 123 may all be pi-type matching circuits, or the five matching circuits 123 may all be T-type matching circuits, or at least one of the five matching circuits 123 is a pi-type matching circuit and at least one of the matching circuits is a T-type matching circuit. Illustratively, the pi-type matching circuit may include an inductor L1, an adjustable capacitor C1, and an adjustable capacitor C2. The inductor L1 is connected between the first switching unit 121 and the second switching unit 122; one end of the inductor L1 is grounded through the adjustable capacitor C1, and the other end of the inductor L1 is grounded through the adjustable capacitor C2. If the five matching circuits 123 are pi-type matching circuits, the inductance of the inductor L1, the capacitance of the adjustable capacitor C1, and the capacitance of the adjustable capacitor C2 in the five matching circuits 123 may be set to be different from each other, so that the five matching circuits 123 are in five matching modes respectively.
Five impedance matching points can be selected correspondingly according to a loadpull table provided by a manufacturer of the power amplifier 110 and five matching circuits 123, wherein one matching circuit 123 is matched with one impedance matching point correspondingly. Illustratively, a first matching circuit 123 of five matching circuits 123 is used to match a first impedance matching point; the second matching circuit 123 is used to match a second impedance matching point; the third matching circuit 123 is used to match a third impedance matching point; the fourth matching circuit 123 is used to match a fourth impedance matching point; the fifth matching circuit 123 is used to match the fifth impedance matching point. The adjacent channel leakage ratios corresponding to the first matching point, the second matching point, … and the fifth matching point may gradually become smaller, or the adjacent channel leakage ratios corresponding to the first matching point, the second matching point, … and the fifth matching point may gradually become larger.
The control module 130 may obtain the first channel quality information of the current communication terminal according to the currently used matching circuit 123, and generate the control instruction according to the first channel quality information. If the first channel quality is high, the control module 130 may control the first switch unit 121 and the second switch unit 122 to turn on a radio frequency path where the matching circuit 123 with small adjacent channel leakage is located, and adjust the voltage information of the power amplifier 110 according to the matching circuit 123 with small adjacent channel leakage, so as to adjust the power consumption of the power amplifier 110, thereby ensuring that the power consumption is optimal without sacrificing the communication performance (e.g., adjacent channel leakage ratio) of the communication terminal, and achieving a balance between the communication performance and the power consumption.
As shown in fig. 3, in one embodiment, the matching module 120 further includes a first matching unit 124 and a second matching unit 125. The first matching unit 124 is connected to the output terminal of the power amplifier 110 and the matching module 120, respectively, and is used for adjusting the impedance transition of the power amplifier 110. That is, the first matching unit 124 is disposed on the rf path between the power amplifier 110 and the matching module 120, and is used to assist in adjusting the impedance transition of the power amplifier 110.
The second matching unit 125 is connected to the matching module 120 and the filtering module 140, that is, the second matching unit 125 is disposed on the rf path between the matching module 120 and the filtering module 140, and is used for impedance transformation, and transforming the input impedance of the filtering module 140 to a preset impedance position. That is, the second matching unit 125 may change the input impedance of the filtering module 140 to a desired impedance position (i.e., the output impedance of the power amplifier 110, about 50 ohms).
In this embodiment, by adding the first matching unit 124 and the second matching unit 125, a larger matching space can be reserved for the rf circuit 10, so as to increase the flexibility of the rf circuit 10.
As shown in fig. 4, in one embodiment, the rf circuit 10 further includes a calibration module 150, where the calibration module 150 is configured to perform a characterization process on each matching circuit 123 to obtain a calibration data set corresponding to each matching circuit 123. The control module 130 may sequentially control each matching circuit 123 to be in an operating state, and the calibration module 150 may correspondingly obtain a calibration data set corresponding to each matching circuit 123. For example, if the matching circuit 123 includes 5, five calibration data sets may be acquired correspondingly.
When different matching circuits 123 are used to adjust the impedance matching point of the power amplifier 110, the adjacent channel leakage ratios corresponding to the impedance matching point are different, and the calibration data sets obtained correspondingly are different. Illustratively, when the first matching circuit 123 is employed, the adjacent channel leakage ratio threshold value (ACLR _ target) corresponding to its impedance matching point is-40 dBc, and its corresponding obtained calibration data set is a calibration set; when the second matching circuit 123 is adopted, the ACLR _ target corresponding to the impedance matching point is-38.5 dBc, and the calibration data group obtained correspondingly is a calibration two group; when the third matching circuit 123 is adopted, the ACLR _ target corresponding to the impedance matching point is-37 dBc, and the calibration data sets obtained correspondingly are three calibration sets; when the fourth matching circuit 123 is adopted, the ACLR _ target corresponding to the impedance matching point is-35.5 dBc, and the calibration data sets correspondingly obtained are four calibration sets; when the fifth matching circuit 123 is used, the ACLR _ target corresponding to the impedance matching point is-34 dBc, and the calibration data set obtained by the impedance matching point is calibration five sets.
The calibration data set includes a plurality of power information and supply voltage mappings. The power information may be understood as the power of the signal transmitted by the power amplifier 110, and the supply voltage may be understood as the operating voltage of the power amplifier 110. For example, as shown in table 2, the mapping relationship between the power information and the operating voltage in the calibration data set is shown.
TABLE 2 mapping of power information to operating voltage in calibration data sets
| Bandwidth BW (MHz) | Frequency (Hz) | Power information (dBm) | Working voltage (mV) |
| 10 | 1950000 | 24.7 | 3400 |
| 10 | 1950000 | 23.9 | 3400 |
| 10 | 1950000 | 23.3 | 3400 |
| 10 | 1950000 | 22.2 | 3200 |
| 10 | 1950000 | 21.1 | 3200 |
| 10 | 1950000 | 20 | 3200 |
| 10 | 1950000 | 19 | 2907 |
| 10 | 1950000 | 17.8 | 2800 |
| 10 | 1950000 | 16.8 | 2800 |
| 10 | 1950000 | 15.5 | 2300 |
| 10 | 1950000 | 14.6 | 2300 |
| 10 | 1950000 | 13.4 | 2069 |
| 10 | 1950000 | 12 | 1822 |
| 10 | 1950000 | 10.8 | 1738 |
| 10 | 1950000 | 9.4 | 1630 |
| 10 | 1950000 | 8.1 | 1400 |
| 10 | 1950000 | 7 | 1266 |
| 10 | 1950000 | 5.9 | 1200 |
| 10 | 1950000 | 4.8 | 1160 |
| 10 | 1950000 | 3.6 | 1053 |
| 10 | 1950000 | 2.6 | 1007 |
In table 2, the power information in the calibration data set can be used as the calibration power, that is, if the power amplifier 110 is controlled to reach the calibration power, an operating voltage that is the same as or close to the calibration power needs to be selected from the calibration data set as the supply voltage of the power amplifier 110.
It should be noted that the larger the value of ACLR _ target, the better the communication performance of the communication terminal, and the larger the supply voltage of the power amplifier 110, the higher the power consumption of the power amplifier 110.
In one embodiment, the control module 130 is further configured to be connected to the calibration module 150, and the control module 130 is further configured to determine a target matching circuit 123 from the plurality of matching circuits 123 according to the first channel quality information, and adjust the power information of the power amplifier 110 according to a calibration data set corresponding to the target matching circuit 123.
The control module 130 includes a modem 131, a control unit 132, and a voltage control unit 133. The modem 131 is configured to obtain first channel quality information of a current communication terminal. Specifically, the modem 131 is used for processing the received radio frequency signal. For example, modem 131 may modulate upstream rf signals and demodulate downstream rf signals. It is understood that the uplink radio frequency signal refers to a radio frequency signal transmitted by the radio frequency circuit 10 to the outside through the antenna, and the downlink radio frequency signal refers to a radio frequency signal received by the radio frequency circuit 10 from the outside through the antenna.
A control unit 132, connected to the modem 131, for generating a control command according to the first channel quality information. It will be appreciated that the control unit 132 may be integrated into the processor of the communication terminal or may stand alone as a separate processing circuit or processing chip. Specifically, the control unit 132 may generate a control instruction according to the matching circuit 123 and the first channel quality information currently used by the radio frequency circuit 10, so as to control the first switch unit 121 and the second switch unit 122 to turn on the radio frequency path where the target matching circuit 123 is located, and output a voltage control signal according to the calibration data set corresponding to the target matching circuit 123.
In one embodiment, the modem 131 may correspondingly obtain second channel quality information measured by the matching circuit 123 used last time by the communication terminal, the control module 130 receives the second channel quality information and determines a variation trend of the first channel quality information relative to the second channel quality information, and the control module 130 may generate a control instruction according to the variation trend and the currently used matching circuit 123. The control instruction is used to control the first switch unit 121 and the second switch unit 122 to selectively turn on the rf path where the target matching circuit 123 is located. Here, the target matching circuit 123 may be understood as a matching circuit 123 to be employed next time. Here, the matching circuit 123 used last time, the matching circuit 123 used currently, and the matching circuit 123 used next time may be understood as matching circuits 123 used in triple cascade.
The variation trend may be understood as a trend of the first channel quality information becoming larger or smaller relative to the second channel quality information. The increasing trend may be understood as that the first channel quality information is larger than the second channel quality information, i.e. the value (or gear) of the first channel quality indication CQI is higher than the value (or gear) of the second channel quality indication CQI. Accordingly, the trend of decreasing may be understood as that the first channel quality information is smaller than the second channel quality information, i.e. the value (or gear) of the first channel quality indication CQI is lower than the value (or gear) of the second channel quality indication CQI.
In one embodiment, each matching circuit 123 may be configured with identification information having uniqueness. Illustratively, the identification information may be identified by Cal _ i. Wherein, the five matching circuits 123 can be respectively identified by Cal _1, Cal _2, Cal _3, Cal _4, Cal _ 5. The control command carries identification information of the target matching circuit 123.
In one embodiment, the adjacent channel leakage ratios corresponding to the first matching point, the second matching point, … and the fifth matching point may gradually become smaller, that is, the adjacent channel leakage ratios corresponding to Cal _1, Cal _2, Cal _3, Cal _4 and Cal _5 may gradually become smaller. If the trend of change is a decreasing trend, the identification information of the target matching circuit 123 is less than or equal to the identification information of the currently employed matching circuit 123. Specifically, if the identification information of the currently used matching circuit 123 is Cal _ i and the trend of change is a decreasing trend, the target matching circuit 123 may use a matching circuit 123 whose identification information is less than or equal to Cal _ i, for example, the matching circuit 123 whose identification information is Cal _ i, Cal _ (i-1), …, Cal _ (i-n). Where i-n is greater than or equal to 1, and i is less than or equal to the total number m of matching circuits 123.
In one embodiment, if the trend of change is an increasing trend, the identification information of the target matching circuit 123 is greater than or equal to the identification information of the currently employed matching circuit 123. Specifically, if the identification information of the currently used matching circuit 123 is Cal _ i and the trend of change is an increasing trend, the target matching circuit 123 may use a matching circuit 123 with identification information greater than or equal to Cal _ i, for example, the matching circuit 123 with identification information of Cal _ i, Cal _ (i +1), …, Cal _ (i + n). Wherein i + n is less than or equal to m, and i is greater than or equal to 1. Wherein n is greater than or equal to 1; m is the total number of matching circuits 123.
And a voltage control unit 133, respectively connected to the modem 131 and the power amplifier 110, for receiving the voltage control signal and adjusting an operating voltage of the power amplifier 110 according to the voltage control signal to adjust an output power of the power amplifier 110. The modem 131 can also output a voltage control signal according to the calibration data set corresponding to the target matching circuit 123. The modem 131 may determine, according to the calibrated power of the rf circuit 10, an operating voltage that is the same as or similar to the calibrated power from the calibration data set corresponding to the target matching circuit 123 as the power supply voltage of the power amplifier 110, and then generate a corresponding voltage control signal according to the determined operating voltage. The voltage control unit 133 may adjust the operating voltage of the power amplifier 110 according to the received voltage control signal, and further change the power of the power amplifier 110, so as to ensure that the power consumption is optimal without sacrificing the communication performance (e.g., adjacent channel leakage ratio) of the communication terminal, and achieve a balance between the communication performance and the power consumption.
In one embodiment, the rf circuit 10 further includes an rf switch, a first end of the rf switch is connected to the filtering module 140, and another end of the rf switch is connected to the antenna, for selectively outputting the filtered rf signal. Specifically, the first matching unit 124 transforms the impedance around 50 ohms to the load impedance (e.g., around 4 ohms) of the power amplifier 110, which is determined by the operating voltage and output power of the power amplifier 110 or load pull, via the radio frequency switch.
In the embodiment of the present application, a power adjustment method is also provided, and the method is applied to a communication terminal including the radio frequency circuit 10 in any of the above embodiments. As shown in fig. 5, in one embodiment, the power adjustment method includes steps 502-506.
The communication terminal may correspondingly obtain the first channel quality information of the current communication terminal based on the matching module 120 currently in the working state. The matching module 120 may be used to adjust the load pull of the power amplifier 110, i.e., the matching module 120 is used to adjust the impedance matching point of the power amplifier 110. Each impedance matching point corresponds to adjacent channel leakage ratio of the communication terminal and current information of the power amplifier 110, wherein the adjacent channel leakage ratio is proportional to the current value. That is, the larger the adjacent channel leakage ratio, the larger the corresponding current value. The matching module 120 has a plurality of matching modes, and each matching mode has a different impedance matching point of the power amplifier 110. That is, the communication terminal may correspondingly obtain the first channel quality information of the current communication terminal based on the current matching mode. The first Channel Quality information may be understood as a Channel Quality Indicator (CQI), and the uplink Channel condition is evaluated according to a value of the CQI. Correspondingly, the base station returns the first channel quality information obtained by measurement to the communication terminal to adjust the Modulation mode (Modulation) and the Code rate (Code rate) of the communication terminal.
Step 506, controlling the matching module to adjust the load pulling of the power amplifier according to the control instruction so as to adjust the power information of the power amplifier.
The control command may carry matching mode information of the matching module 120, and the communication terminal may generate the control command according to the acquired first channel quality information. Based on the control instructions, the matching module 120 may select a corresponding matching mode to adjust the load pull of the power amplifier 110. Meanwhile, the communication terminal may also adjust the operating voltage of the power amplifier 110 according to the current matching mode (i.e., the current impedance matching point of the power amplifier 110) to adjust the transmitting power of the power amplifier 110, so as to calibrate the power information of the power amplifier 110. By adjusting the supply voltage or power information of the power amplifier 110, the power consumption (also referred to as power consumption) of the power amplifier 110 can be adjusted. The power supply voltage or the power information of the power amplifier 110 is positively correlated with the power consumption of the power amplifier 110, that is, the larger the power supply voltage or the power information of the power amplifier 110 is, the higher the power consumption of the power amplifier 110 is.
The power adjusting method can acquire the first channel quality information of the current communication terminal, generate the control instruction according to the first channel quality information, and control the matching module 120 to adjust the load traction of the power amplifier 110 according to the control instruction to adjust the power information of the power amplifier 110 so as to adjust the power consumption of the power amplifier 110, so that the optimal power consumption can be ensured under the condition that the communication performance (for example, the adjacent channel leakage ratio) of the communication terminal is not sacrificed, and the balance between the communication performance and the power consumption is realized.
In one embodiment, the matching module 120 includes a first switching unit 121, a second switching unit 122, and a plurality of matching circuits 123. The matching circuits 123 are used to adjust the load pulling of the power amplifier 110, that is, the impedance matching points that each matching circuit 123 can match are different. Five impedance matching points can be selected correspondingly according to a loadpull table provided by a manufacturer of the power amplifier 110 and five matching circuits 123, wherein one matching circuit 123 is matched with one impedance matching point correspondingly. Illustratively, a first matching circuit 123 of the five matching circuits 123 is used to match a first impedance matching point; the second matching circuit 123 is used to match a second impedance matching point; the third matching circuit 123 is used to match a third impedance matching point; the fourth matching circuit 123 is used to match a fourth impedance matching point; the fifth matching circuit 123 is used to match the fifth impedance matching point. The adjacent channel leakage ratios corresponding to the first matching point, the second matching point, … and the fifth matching point may gradually become smaller, or the adjacent channel leakage ratios corresponding to the first matching point, the second matching point, … and the fifth matching point may gradually become larger.
As shown in fig. 6, in one embodiment, the power adjustment method includes steps 602-606.
Step 602, performing characterization processing on each matching circuit to obtain a calibration data set corresponding to each matching circuit;
the communication terminal may control each matching circuit 123 to be in an operating state to perform a characterization process on each matching circuit 123 to correspondingly obtain a corresponding calibration data set. For example, when the first matching circuit 123 is controlled to be in an operating state, the calibration data set obtained by the first matching circuit is a calibration set; when the second matching circuit 123 is used, the calibration data sets obtained correspondingly are two calibration sets; when the third matching circuit 123 is used, the calibration data sets correspondingly obtained are three calibration sets; when the fourth matching circuit 123 is used, the calibration data sets obtained correspondingly are four calibration sets; when the fifth matching circuit 123 is used, the calibration data sets obtained by the fifth matching circuit are calibration five sets. The calibration data set includes a plurality of power information and supply voltage mappings. The power information may be understood as the power of the signal transmitted by the power amplifier 110, and the supply voltage may be understood as the operating voltage of the power amplifier 110.
Step 604, obtaining first channel quality information of the current communication terminal, and generating a control instruction according to the first channel quality information.
Specifically, as shown in fig. 7, generating the control instruction according to the first channel quality information may further include:
step 702, obtaining the second channel quality information measured by the matching circuit adopted by the communication terminal last time.
Here, the matching circuit 123 used last time, the matching circuit 123 used currently, and the matching circuit 123 used next time may be understood as matching circuits 123 used in triple cascade. The matching circuit 123 to be employed next is the target matching circuit 123.
In step 704, a trend of the first channel quality information relative to the second channel quality information is determined.
The variation tendency may be understood as a tendency of the first channel quality information to become larger or smaller with respect to the second channel quality information. A increasing trend may be understood as that the first channel quality information is larger than the second channel quality information, i.e. the value (or gear) of the first channel quality indicator CQI is higher than the value (or gear) of the second channel quality indicator CQI. Accordingly, the trend of decreasing may be understood as that the first channel quality information is smaller than the second channel quality information, i.e. the value (or gear) of the first channel quality indication CQI is lower than the value (or gear) of the second channel quality indication CQI.
And step 706, generating a control instruction according to the change trend and the currently adopted matching circuit.
In one embodiment, each matching circuit 123 may be configured with identification information having uniqueness. Illustratively, the identification information may be identified by Cal _ i. Wherein, the five matching circuits 123 can be respectively identified by Cal _1, Cal _2, Cal _3, Cal _4, Cal _ 5. The control command carries identification information of the target matching circuit 123.
In one embodiment, the adjacent channel leakage ratios corresponding to the first matching point, the second matching point, … and the fifth matching point may gradually become smaller, that is, the adjacent channel leakage ratios corresponding to Cal _1, Cal _2, Cal _3, Cal _4 and Cal _5 may gradually become smaller. If the trend of change is a decreasing trend, the identification information of the target matching circuit 123 is less than or equal to the identification information of the currently employed matching circuit 123. Specifically, if the identification information of the currently used matching circuit 123 is Cal _ i and the trend of change is a decreasing trend, the target matching circuit 123 may use a matching circuit 123 whose identification information is less than or equal to Cal _ i, for example, the matching circuit 123 whose identification information is Cal _ i, Cal _ (i-1), …, Cal _ (i-n). Where i-n is greater than or equal to 1, and i is less than or equal to the total number m of matching circuits 123. If the trend of change is an increasing trend, the identification information of the target matching circuit 123 is greater than or equal to the identification information of the currently employed matching circuit 123. Specifically, if the identification information of the currently used matching circuit 123 is Cal _ i and the trend of change is an increasing trend, the target matching circuit 123 may use a matching circuit 123 with identification information greater than or equal to Cal _ i, for example, the matching circuit 123 with identification information of Cal _ i, Cal _ (i +1), …, Cal _ (i + n). Wherein i + n is less than or equal to m, and i is greater than or equal to 1. Wherein n is greater than or equal to 1; m is the total number of matching circuits 123.
Step 606, determining a target matching circuit from the plurality of matching circuits according to the control instruction.
Based on the above step 706, the communication terminal may generate a control command carrying identification information, and may correspondingly determine the target matching circuit 123 based on the identification information. The communication terminal may control the first switch unit 121 and the second switch unit 122 according to the control instruction, and further turn on the radio frequency path where the target matching circuit 123 is located, so that the target matching circuit 123 is in an operating state.
Step 608, the power information of the power amplifier is adjusted according to the calibration data set corresponding to the target matching circuit.
The communication terminal may correspondingly obtain the calibration data set corresponding to the target matching circuit 123 according to the target matching circuit 123, and adjust the working voltage of the power amplifier 110 according to the mapping relationship between the working voltage and the transmission power in the calibration data set, so as to change the power of the power amplifier 110, thereby ensuring that the power consumption is optimal without sacrificing the communication performance (for example, the adjacent channel leakage ratio) of the communication terminal, and achieving the balance between the communication performance and the power consumption.
It should be understood that although the various steps in the flowcharts of fig. 5-7 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders. Moreover, at least some of the steps in fig. 5-7 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
The embodiment of the application also provides a communication terminal. The communication terminal includes: a radio frequency transceiver, and the radio frequency circuit in any of the foregoing embodiments, wherein an input of a power amplifier of the radio frequency circuit is connected to the radio frequency transceiver. The communication terminal may generate a corresponding control instruction according to the first channel quality information to control the matching module to adjust the load traction of the power amplifier, and meanwhile, the control module 130 may adjust the power supply voltage of the power amplifier according to the load traction, and then adjust the power information of the transmission signal to adjust the power consumption of the power amplifier, so that the optimal power consumption may be ensured without sacrificing the communication performance (for example, the adjacent channel leakage ratio) of the communication terminal, and the balance between the communication performance and the power consumption may be achieved.
The embodiment of the application also provides a computer readable storage medium. One or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform the steps of the power regulation method.
A computer program product containing instructions which, when run on a computer, cause the computer to perform a power regulation method.
Any reference to memory, storage, database, or other medium used herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and bus dynamic RAM (RDRAM).
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (13)
1. A radio frequency circuit, for use in a communication terminal, the radio frequency circuit comprising:
the power amplifier is arranged on a transmitting path of the radio frequency circuit and used for carrying out power amplification on the received radio frequency signal;
the control module is connected with the power amplifier and used for acquiring first channel quality information of the current communication terminal and generating a control instruction according to the first channel quality information;
the matching module is respectively connected with the power amplifier and the control module and used for receiving the control instruction and adjusting the load traction of the power amplifier according to the control instruction; the control module is further used for calibrating power information of the power amplifier according to the load traction; the matching module comprises a first switching unit, a second switching unit and a plurality of matching circuits, wherein,
the first end of the first switch unit is connected with the output end of the power amplifier, the selection end of the first switch unit is connected with the selection end of the second switch unit through a plurality of matching circuits, the first end of the second switch unit is the output end of the matching module, and the control end of the first switch unit and the control end of the second switch unit are connected with the control module and used for receiving the control command to select and conduct the radio frequency path where any matching circuit is located;
the matching circuits are used for adjusting the load traction of the power amplifier, and the impedance matching points which can be matched by each matching circuit are different;
the calibration module is used for performing characterization processing on each matching circuit to obtain a calibration data set corresponding to each matching circuit; wherein the calibration data set comprises a plurality of power information and power supply voltage mappings;
the control module is further connected with the calibration module, and the control module is further configured to determine a target matching circuit from the plurality of matching circuits according to the first channel quality information, and adjust power information of the power amplifier according to a calibration data set corresponding to the target matching circuit.
2. The radio frequency circuit of claim 1, further comprising: and the filtering module is used for filtering the amplified radio-frequency signal, wherein the first end of the second switch unit is connected with the filtering module.
3. The radio frequency circuit of claim 1, wherein the control module comprises:
the modem is connected with the calibration module, and is used for acquiring the first channel quality information of the current communication terminal and outputting a voltage control signal according to the calibration data set corresponding to the target matching circuit;
the control unit is respectively connected with the modem, the first switch unit and the second switch unit and is used for generating the control instruction according to the first channel quality information;
and the voltage control unit is respectively connected with the modem and the power amplifier and used for receiving the voltage control signal and adjusting the working voltage of the power amplifier according to the voltage control signal so as to adjust the output power of the power amplifier.
4. The rf circuit of claim 3, wherein the modem is further configured to obtain second channel quality information measured by the matching circuit last used by the communication terminal;
the control unit is further configured to receive the second channel quality information, determine a variation trend of the first channel quality information relative to the second channel quality information, and generate the control instruction according to the variation trend and the currently used matching circuit.
5. The radio frequency circuit of claim 1, wherein the matching circuit comprises a pi-type matching circuit, a T-type matching circuit.
6. The radio frequency circuit according to claim 1, wherein the first switching unit and the second switching unit are each a single-pole multi-throw switch.
7. The radio frequency circuit of claim 2, wherein the matching module further comprises:
the first matching unit is respectively connected with the output end of the power amplifier and the matching module and is used for adjusting the impedance migration of the power amplifier;
and the second matching unit is respectively connected with the matching module and the filtering module, is used for impedance transformation, and is transformed to a preset impedance position through the input impedance of the filtering module.
8. The radio frequency circuit of claim 2, further comprising:
and the first end of the radio frequency switch is connected with the filtering module, and the other end of the radio frequency switch is connected with an antenna and used for selectively outputting the filtered radio frequency signal.
9. A power adjustment method applied to a communication terminal, the method comprising:
performing characterization processing on each matching circuit to obtain a calibration data set corresponding to each matching circuit; wherein the calibration data set comprises a plurality of power information and power supply voltage mappings;
acquiring first channel quality information of the current communication terminal;
generating a control instruction according to the first channel quality information;
determining a target matching circuit from a plurality of matching circuits according to the control instruction;
and adjusting the power information of the power amplifier according to the calibration data group corresponding to the target matching circuit.
10. The method of claim 9, wherein generating the control instruction according to the first channel quality information comprises:
acquiring second channel quality information measured by the matching circuit adopted by the communication terminal last time;
determining a trend of change of the first channel quality information relative to the second channel quality information;
and generating the control instruction according to the change trend and the currently adopted matching circuit.
11. The method of claim 10, wherein the variation trend is a greater trend or a smaller trend of the first channel quality information relative to the second channel quality information; the method further comprises the following steps:
configuring an identification information for each matching circuit;
if the change trend is a reduction trend, the identification information of the target matching circuit is less than or equal to the identification information of the currently adopted matching circuit;
and if the change trend is an increasing trend, the identification information of the target matching circuit is greater than or equal to the identification information of the currently adopted matching circuit.
12. A communication terminal, comprising:
a radio frequency transceiver, and
the radio frequency circuit of any of claims 1 to 8, an input of a power amplifier of the radio frequency circuit being connected with the radio frequency transceiver.
13. A computer-readable storage medium, comprising: one or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform the steps of the power regulation method of any of claims 9-11.
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