CN114513725B - Power amplifier control circuit and method - Google Patents
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Abstract
本发明公开了一种功放控制电路及方法。其中，所述电路包括：计算电路，用于获取多个与最小调度时间单元对应的无线帧信号；计算各个无线帧信号的第一参数值和/或第二参数值；生成电路，用于基于计算的各个第一参数值和/或所述第二参数值，生成供电控制信号；控制电路，用于利用所述供电控制信号，控制功率放大器的供电电压，以使所述功率放大器在输入所述多个无线帧信号的情况下产生的功耗最低。
The present invention discloses a power amplifier control circuit and method. The circuit includes: a calculation circuit for obtaining multiple wireless frame signals corresponding to a minimum scheduling time unit; calculating a first parameter value and/or a second parameter value of each wireless frame signal; a generation circuit for generating a power supply control signal based on the calculated first parameter values and/or the second parameter values; and a control circuit for controlling the power supply voltage of a power amplifier using the power supply control signal so that the power amplifier generates the lowest power consumption when the multiple wireless frame signals are input.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a power amplifier control circuit and a method.
Background
With the rapid development of data traffic, the requirements for network coverage are increasing. To meet network coverage requirements, a large number of base station devices may be deployed. In general, a signal processing unit for performing signal processing on a scheduled radio frame signal and a power amplifier for amplifying the radio frame signal subjected to signal processing may be provided in the base station apparatus, and the amplified radio frame signal is to be used for transmission to a terminal. At present, as the bandwidth of the radio frame signal is larger and larger, the power consumption of the base station equipment is larger and larger, so that the energy-saving effect of the base station equipment is poorer and worse.
Disclosure of Invention
Accordingly, embodiments of the present invention provide a power amplifier control circuit and a method thereof.
The technical scheme of the embodiment of the invention is realized as follows:
at least one embodiment of the present invention provides a power amplifier control circuit, including:
The computing circuit is used for acquiring a plurality of wireless frame signals corresponding to the minimum scheduling time unit, and computing a first parameter value and/or a second parameter value of each wireless frame signal;
A generation circuit for generating a power supply control signal based on the calculated respective first parameter value and/or the second parameter value;
And a control circuit for controlling a power supply voltage of the power amplifier using the power supply control signal so as to minimize power consumption generated by the power amplifier when the plurality of radio frame signals are input.
Furthermore, according to at least one embodiment of the present invention, the generating circuit is specifically configured to:
Determining a first control signal corresponding to a corresponding first parameter value according to the corresponding relation between the parameter value and the control signal for each first parameter value to obtain a plurality of first control signals;
And/or the number of the groups of groups,
And determining a second control signal corresponding to the corresponding second parameter value according to the corresponding relation between the parameter value and the control signal for each second parameter value to obtain a plurality of second control signals, and generating a power supply control signal based on the plurality of second control signals and the period of the minimum scheduling time unit.
Furthermore, according to at least one embodiment of the present invention, the control circuit includes:
the time adjusting circuit is used for controlling the power supply control signal and the wireless frame signal to realize time synchronization;
And the modulation power supply circuit is used for controlling the grid power supply voltage and the drain power supply voltage of the power amplifier by using the power supply control signal which is in time synchronization with the wireless frame signals, so that the power consumption of the power amplifier is the lowest when the plurality of wireless frame signals are input.
Furthermore, according to at least one embodiment of the present invention, the time adjustment circuit is specifically configured to:
acquiring a frame synchronization signal;
when the frame synchronization signal is utilized to determine that the starting time of the power supply control signal is larger than the starting time of the wireless frame signal, calculating a first time difference between the starting time of the wireless frame signal and the starting time of the power supply control signal;
and adjusting the starting time of the power supply control signal by utilizing the first time difference so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
Furthermore, in accordance with at least one embodiment of the present invention, the circuit further comprises:
the power supply control circuit comprises a buffer circuit, a power supply control circuit and a wireless frame signal receiving circuit, wherein the buffer circuit is used for acquiring a frame synchronization signal, calculating a second time difference between the starting time of the power supply control signal and the starting time of the wireless frame signal when the starting time of the power supply control signal is determined to be smaller than the starting time of the wireless frame signal by utilizing the frame synchronization signal, and buffering the wireless frame signal according to the second time difference so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
At least one embodiment of the present invention provides a power amplifier control method, including:
Calculating a first parameter value and/or a second parameter value of each wireless frame signal;
generating a power supply control signal based on the calculated respective first parameter value and/or the second parameter value;
And controlling a power supply voltage of a power amplifier by using the power supply control signal so as to minimize power consumption generated by the power amplifier when the plurality of radio frame signals are input.
Furthermore, according to at least one embodiment of the present invention, the generating a power supply control signal based on the calculated respective first parameter value and/or the second parameter value comprises:
Determining a first control signal corresponding to a corresponding first parameter value according to the corresponding relation between the parameter value and the control signal for each first parameter value to obtain a plurality of first control signals;
And/or the number of the groups of groups,
And determining a second control signal corresponding to the corresponding second parameter value according to the corresponding relation between the parameter value and the control signal for each second parameter value to obtain a plurality of second control signals, and generating a power supply control signal based on the plurality of second control signals and the period of the minimum scheduling time unit.
Furthermore, according to at least one embodiment of the present invention, the controlling the supply voltage of the power amplifier using the supply control signal includes:
controlling the power supply control signal and the wireless frame signal to realize time synchronization;
and controlling a gate supply voltage and a drain supply voltage of a power amplifier by using a supply control signal which is time-synchronized with the radio frame signals, so that the power consumption of the power amplifier is the lowest when the plurality of radio frame signals are input.
Furthermore, according to at least one embodiment of the present invention, the controlling the power supply control signal to achieve time synchronization with the radio frame signal includes:
acquiring a frame synchronization signal;
when the frame synchronization signal is utilized to determine that the starting time of the power supply control signal is larger than the starting time of the wireless frame signal, calculating a first time difference between the starting time of the wireless frame signal and the starting time of the power supply control signal;
and adjusting the starting time of the power supply control signal by utilizing the first time difference so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
Furthermore, in accordance with at least one embodiment of the present invention, the method further comprises:
acquiring a frame synchronization signal;
When the frame synchronization signal is used for determining that the starting time of the power supply control signal is smaller than the starting time of the wireless frame signal, calculating a second time difference between the starting time of the power supply control signal and the starting time of the wireless frame signal;
and according to the second time difference, the wireless frame signal is buffered so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
At least one embodiment of the invention provides a power amplifier control circuit and a method, wherein the method comprises the steps of obtaining a plurality of wireless frame signals corresponding to a minimum scheduling time unit, calculating first parameter values and/or second parameter values of each wireless frame signal, generating a power supply control signal based on the calculated first parameter values and/or second parameter values, and controlling the power supply voltage of a power amplifier by utilizing the power supply control signal so as to enable the power consumption of the power amplifier to be minimum under the condition that the plurality of wireless frame signals are input. By adopting the technical scheme provided by the embodiment of the invention, the power supply voltage of the power amplifier in each minimum scheduling time unit is adjusted through the first parameter value and/or the second parameter value of the wireless frame signal in the minimum scheduling time unit, so that the lowest power consumption of the power amplifier is realized.
Drawings
FIG. 1 is a schematic diagram of an ideal envelope tracking technique in the related art;
fig. 2 is a schematic diagram of a composition structure of a power amplifier control circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the correspondence between the efficiency and the supply voltage of a power amplifier according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the output power of a power amplifier according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a specific implementation structure of a power amplifier control circuit according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a radio frame signal corresponding to a minimum schedule time unit according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a wireless frame signal, a power control signal, and a frame synchronization signal according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an implementation flow of a power control method according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a composition structure of a base station apparatus to which the power control method of the embodiment of the present invention is applied.
Detailed Description
Prior to introducing the technical solution of the embodiment of the present invention, a description will be given of related technology.
In the related art, with the rapid development of the wireless communication market, especially the burst of data service in recent years, the requirements on the coverage and capacity of the network are higher and higher. For this reason, operators invest huge amounts of resources and deploy a large number of wireless networks of various systems, and in this case, the total power consumption of the networks is higher and higher, and the energy-saving capability of the base station becomes particularly important. The related art only relates to schemes such as time slot turn-off, carrier turn-off, channel turn-off, dormancy, complete machine turn-off and the like, but does not relate to a technical scheme how to minimize the power consumption of the power amplifier. At present, many power saving schemes realize saving of power consumption from different degrees, because the bandwidth of a communication system is wider and wider, and the ideal envelope tracking technology is up to 200M at present, because of the limitation of device response capability, the lowest power consumption of a power amplifier cannot be realized, and fig. 1 is a schematic diagram of the ideal envelope tracking technology in the related technology. In the related art, when the bandwidth of the radio frame signal input to the power amplifier is 90M, the period of the radio frame signal in a minimum scheduling time unit is less than 8ns, and the response capability of the power supply of the power amplifier is controlled at the us level, the two cannot be synchronized, so that the lowest power consumption of the power amplifier cannot be realized in the broadband communication system.
In general, a signal processing unit for performing signal processing on a scheduled radio frame signal and a power amplifier for amplifying the radio frame signal subjected to signal processing may be provided in the base station apparatus, and the amplified radio frame signal is to be used for transmission to a terminal. At present, as the bandwidth of the radio frame signal is larger and larger, the power consumption of the base station equipment is larger and larger, so that the energy-saving effect of the base station equipment is poorer and worse.
Based on the above, the embodiment of the invention provides a power amplifier control circuit, which comprises a calculation circuit, a generation circuit and a control circuit, wherein the calculation circuit is used for obtaining a plurality of wireless frame signals corresponding to a minimum scheduling time unit, the generation circuit is used for generating a power supply control signal based on the calculated first parameter values and/or the calculated second parameter values, and the control circuit is used for controlling the power supply voltage of a power amplifier by utilizing the power supply control signal so as to enable the power consumption of the power amplifier to be the lowest when the plurality of wireless frame signals are input.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The embodiment of the invention provides a power amplifier control circuit, as shown in fig. 2, which comprises:
A calculation circuit 21 for acquiring a plurality of radio frame signals corresponding to the minimum schedule time unit;
a generating circuit 22 for generating a power supply control signal based on the calculated respective first parameter value and/or the second parameter value;
And a control circuit 23 for controlling a power supply voltage of a power amplifier using the power supply control signal so as to minimize power consumption generated by the power amplifier when the plurality of radio frame signals are inputted.
Here, the minimum scheduling time unit may refer to a minimum time unit that the base station apparatus schedules to the terminal, and may specifically be one slot, or may refer to an orthogonal frequency division multiplexing (OFDM, orthogonal Frequency Division Multiplexing)) symbol. The first parameter value of the radio frame signal may refer to a mean value of voltages of the radio frame signal in the minimum schedule time unit, the second parameter value may refer to a peak value of voltages of the radio frame signal in the minimum schedule time unit, or the first parameter value of the radio frame signal may refer to a mean value of powers of the radio frame signal in the minimum schedule time unit, and the second parameter value may refer to a peak value of powers of the radio frame signal in the minimum schedule time unit.
Here, considering that the bandwidth of the radio frame signal is larger and larger, that is, the period of the minimum schedule time unit is smaller, in this case, if the power supply period of the power amplifier is larger than the period of the minimum schedule time unit, the power amplifier may transmit at maximum power at each minimum schedule time unit, resulting in an increase in power consumption. Therefore, the average value and/or peak value of the voltage (or power) of the wireless frame signal in each minimum scheduling time unit can be calculated, and the grid power supply voltage and the drain power supply voltage input by the power amplifier in each minimum scheduling time unit are adjusted based on the calculated average value and/or peak value of the voltage (or power), so that the power amplifier is ensured to output the transmitting power matched with the wireless frame signal in each minimum scheduling time unit, the transmitting with the maximum power is avoided, and the power consumption of the power amplifier can be saved.
In practical application, the grid power supply voltage and the drain power supply voltage input by the power amplifier in each minimum scheduling time unit can be adjusted based on the average value and/or the peak value of the voltage of the wireless frame signal in each minimum scheduling time unit, and the grid power supply voltage and the drain power supply voltage input by the power amplifier in each minimum scheduling time unit can also be adjusted based on the average value and/or the peak value of the power of the wireless frame signal in each minimum scheduling time unit.
Based on this, in an embodiment, the generating circuit 22 is specifically configured to:
Determining a first control signal corresponding to a corresponding first parameter value according to the corresponding relation between the parameter value and the control signal for each first parameter value to obtain a plurality of first control signals;
And/or the number of the groups of groups,
And determining a second control signal corresponding to the corresponding second parameter value according to the corresponding relation between the parameter value and the control signal for each second parameter value to obtain a plurality of second control signals, and generating a power supply control signal based on the plurality of second control signals and the period of the minimum scheduling time unit.
The process of generating the power supply control signal by the generating circuit 22 will be described in detail, specifically including the following cases:
In the first case, a power supply control signal is generated based on the average value of the voltages of the plurality of radio frame signals corresponding to the minimum schedule time units and the period of the minimum schedule time units to adjust the gate power supply voltage and the drain power supply voltage of the power amplifier in each minimum schedule time unit.
The method comprises the steps of determining a mean value of one voltage for each minimum scheduling time unit, setting a corresponding time interval as a period of the minimum scheduling time unit for the mean value of two adjacent voltages, taking the mean value of the two adjacent voltages as an amplitude value, and taking the time interval corresponding to the mean value of the two adjacent voltages as the period to obtain a first control signal corresponding to the mean value of the voltages. As shown in table 1, for the minimum scheduling time unit 1, the calculated average voltage is the average value 1, for the minimum scheduling time unit 2, the calculated average voltage is the average value 2, and so on, for the minimum scheduling time unit n, the calculated average voltage is the average value n, so that the average value 1 and the average value 2 of the voltages can be taken as the amplitude values, the time interval corresponding to the average value 1 and the average value 2, that is, the period of the minimum scheduling time unit is taken as the period, so as to obtain a first control signal, that is, the control signal 1, and so on, so as to obtain the control signal n, and finally, the control signals 1 to n are combined into the power supply control signal.
| Minimum schedule time unit | Input control information | First control signal |
| Minimum schedule time unit 1 | Mean value of voltage 1 | Control signal 1 |
| Minimum schedule time unit 2 | Mean value of voltage 2 | Control signal 2 |
| ...... | ...... | ...... |
| Minimum schedule time unit n | Mean value n of voltage | Control signal n |
TABLE 1
In the second case, a power supply control signal is generated based on the peak values of the voltages of the plurality of radio frame signals corresponding to the minimum schedule time units and the period of the minimum schedule time units to adjust the gate power supply voltage and the drain power supply voltage of the power amplifier in each minimum schedule time unit.
The method comprises the steps of determining a peak value of power for each minimum scheduling time unit, setting corresponding time intervals as periods of the minimum scheduling time units for the peak values of two adjacent power, taking the peak values of two adjacent power as amplitude values, taking the time intervals corresponding to the peak values of two adjacent power as periods, and obtaining a first control signal corresponding to the peak value of the power. As shown in table 2, for the minimum scheduling time unit 1, the calculated power peak value is a peak value 1, for the minimum scheduling time unit 2, the calculated power peak value is a peak value 2, and so on, for the minimum scheduling time unit n, the calculated power peak value is a peak value n, so that the peak value 1 and the peak value 2 of the power can be taken as amplitude values, the time interval corresponding to the peak value 1 and the peak value 2, that is, the period of the minimum scheduling time unit is taken as a period, a first control signal, that is, a control signal 1, is obtained, and so on, a control signal n is obtained, and finally, the control signals 1 to n are combined into a power supply control signal.
| Minimum schedule time unit | Input control information | Power P | First control signal |
| Minimum schedule time unit 1 | Peak value of power 1 | P≥Pth1 | Control signal 1 |
| Minimum schedule time unit 2 | Peak 2 of power | Pth1≥P≥Pth2 | Control signal 2 |
| ...... | ...... | ...... | ...... |
| Minimum schedule time unit n | Peak 3 of power | Pthn≥P | Control signal n |
TABLE 2
In a third case, a power supply control signal is generated based on the average value and the peak value of the voltages of the plurality of radio frame signals corresponding to the minimum schedule time units and the period of the minimum schedule time units, so as to adjust the gate power supply voltage and the drain power supply voltage of the power amplifier in each minimum schedule time unit.
In practical application, the power amplifier can amplify the input wireless frame signal under the condition that the grid electrode and the drain electrode supply power simultaneously to obtain output power, and in order to enable the power consumption generated by the power amplifier in the output power to be lower, a power supply control signal for controlling the grid electrode and the drain electrode to supply power can be generated according to each wireless frame signal corresponding to the minimum scheduling time unit, and the time of the power supply control signal and the wireless frame signal corresponding to each minimum scheduling time unit are kept to realize time synchronization, so that the power consumption generated by the power amplifier in the period corresponding to each minimum scheduling time unit is the lowest.
Based on this, in an embodiment, the control circuit 23 includes:
the time adjusting circuit is used for controlling the power supply control signal and the wireless frame signal to realize time synchronization;
And the modulation power supply circuit is used for controlling the grid power supply voltage and the drain power supply voltage of the power amplifier by using the power supply control signal which is in time synchronization with the wireless frame signals, so that the power consumption of the power amplifier is the lowest when the plurality of wireless frame signals are input.
Here, when the base station device operates in the existing network, the network load changes in real time with the service demand, so the maximum output power of the base station device is generally determined according to the full load demand. The output power of the base station device is generated by a power amplifier, and the power amplifier has a characteristic that the working efficiency is the highest at the maximum output power, and the efficiency is reduced along with the reduction of the output power. For example, when the power amplifier is fully loaded and outputs power=200w, efficiency=40% and power consumption=500w, and when the power amplifier outputs power=90w, efficiency becomes 38% and power consumption=263W, it can be seen that the power amplifier outputs power which is reduced by half and the power consumed by the power amplifier is not reduced by half, but when the output power is further reduced, efficiency is further reduced.
Fig. 3 is a schematic diagram of a correspondence relationship between efficiency and supply voltage of a power amplifier, and as shown in fig. 3, when the gate supply voltage and the drain supply voltage of the power amplifier are adjusted, the power amplifier can be guaranteed to be at an optimal efficiency, so that power consumption is reduced. Fig. 4 is a schematic diagram of output power of the power amplifier, and as shown in fig. 4, after the gate supply voltage and the drain supply voltage of the power amplifier are controlled by using a supply control signal that is time-synchronized with the radio frame signal, it is ensured that the transmit power of the power amplifier in each schedule time unit corresponds to the minimum power consumption.
In practical application, if the time of the wireless frame signal corresponding to each minimum schedule time unit reaching the power amplifier is earlier than the time of the power supply control signal applying the power supply voltage of the power amplifier, the wireless will adjust the gate power supply voltage and the drain power supply voltage of the power amplifier in the period corresponding to each minimum schedule time unit, so that the start time of the power supply control signal and the start time of the wireless frame signal in each minimum schedule time unit need to be controlled to achieve synchronization.
Based on this, in an embodiment, the time adjustment circuit is specifically configured to:
acquiring a frame synchronization signal;
when the frame synchronization signal is utilized to determine that the starting time of the power supply control signal is larger than the starting time of the wireless frame signal, calculating a first time difference between the starting time of the wireless frame signal and the starting time of the power supply control signal;
and adjusting the starting time of the power supply control signal by utilizing the first time difference so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
In practical application, if the time of the wireless frame signal corresponding to each minimum schedule time unit reaching the power amplifier is later than the time of the power supply control signal applying the power supply voltage of the power amplifier, the wireless will adjust the gate power supply voltage and the drain power supply voltage of the power amplifier in the period corresponding to each minimum schedule time unit, so that the start time of the wireless frame signal and the start time of the power supply control signal in each minimum schedule time unit need to be controlled to achieve synchronization.
Based on this, in an embodiment, the circuit further comprises:
the power supply control circuit comprises a buffer circuit, a power supply control circuit and a wireless frame signal receiving circuit, wherein the buffer circuit is used for acquiring a frame synchronization signal, calculating a second time difference between the starting time of the power supply control signal and the starting time of the wireless frame signal when the starting time of the power supply control signal is determined to be smaller than the starting time of the wireless frame signal by utilizing the frame synchronization signal, and buffering the wireless frame signal according to the second time difference so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
The implementation principle of the power amplifier control circuit is described in detail below with reference to specific embodiments.
Fig. 5 is a schematic diagram of a specific implementation structure of a power amplifier control circuit, as shown in fig. 5, where the power amplifier control circuit includes a baseband signal processing module, a digital up-conversion (DUC, digital Up Converters)/conditional random field (CRF, conditional Random Fields) module, a digital predistortion (DPD, digital Pre-Distortion) processing module, a transmission module, a voltage and power calculation module, a control signal generation module, a time adjustment module, a modulation power module, and a buffer module,
The calculation circuit 21 is a voltage and power calculation module;
The generating circuit 22 is a control signal generating module;
the control circuit 23 comprises a time adjusting circuit and a modulation power supply circuit;
the time adjusting circuit is a time adjusting module;
the modulation power supply circuit is a modulation power supply module.
The baseband signal processing module, the DUC/CRF module, the DPD processing module, and the transmission module are existing circuit modules, and the voltage and power calculation module, the control signal generation module, the time adjustment module, the modulation power module, and the buffer module are newly added circuit modules according to the embodiment of the present invention.
The implementation principle of each module is described in detail below.
The implementation principle of the baseband signal processing module is specifically as follows:
And generating a radio frame signal corresponding to the minimum scheduling time unit, and transmitting the generated radio frame signal to the DUC/CRF module.
The implementation principle of the DUC/CRF module is as follows:
And receiving a wireless frame signal corresponding to the minimum scheduling time unit transmitted by the baseband signal processing module, performing DUC/CRF processing on the wireless frame signal, and transmitting the wireless frame signal subjected to DUC/CRF processing to the voltage and power calculation module. The DUC process may refer to up-converting the radio frame signal.
The implementation principle of the voltage and power calculation module is as follows:
And receiving the wireless frame signals transmitted by the voltage and power calculation module, and calculating the average value and/or the peak value of the voltage (or power) of the wireless frame signals in the minimum scheduling time unit.
Specifically, taking a radio frame signal as an example of a 5G mobile communication signal, fig. 6 is a schematic diagram of a radio frame signal corresponding to a minimum scheduled time unit, as shown in fig. 6, considering that the 5G mobile communication signal has different frame structures, each frame structure may be formed by symbols, each symbol has a length of 71.4us, when traffic is scheduled, the minimum scheduled time unit may also be a symbol, and the occupation condition of a frequency domain in each symbol is determined, so that energy to be transmitted is consistent, that is, after a minimum scheduled time unit is determined, the radio frame signal is relatively stable in the minimum scheduled time unit, so that the voltage and power calculation module calculates an average value and/or peak value (1/900) of a voltage (or power) of the radio frame signal in the minimum scheduled time unit.
When the occupancy rate of a Resource Block (RB) is different, the occupancy position of the RB is different, the number of streams is different, and the modulation scheme is different, the average value and/or the peak value of the radio frame signal voltage (or power) corresponding to the minimum scheduling time unit are affected. Considering that the frequency of the power supply control signal of the modulated power supply in the related art is far less than ns level and cannot be matched with the period of the input wireless frame signal, in the embodiment of the invention, a signal voltage and power calculation module is added.
The implementation principle of the control signal generation module is specifically as follows:
The power supply control signal is generated according to the average value and/or the peak value of the voltage calculated by the voltage and power calculation module and the period of the minimum scheduling time unit, or the power supply control signal is generated according to the average value and/or the peak value of the power calculated by the voltage and power calculation module and the period of the minimum scheduling time unit.
In particular, the amplitude of the supply control signal is determined by the mean and/or peak value of the voltage or by the mean and/or peak value of the power, and the period of variation of the supply control signal is determined by the period of the minimum schedule time unit. The amplitude may be determined by using a lookup table, and is specifically determined by one or more of a mean value, a peak value, or a mean value and a peak value of the power. The lookup table may store the correspondence of three information, i.e. input information (one or more of average value of power, peak value or average value of voltage, peak value), control signal (set for modulating power supply) and three-stage debugging of the power amplifier.
The implementation principle of the time adjustment module is specifically as follows:
And if the time of the wireless frame signal corresponding to each minimum scheduling time unit reaching the power amplifier is earlier than the time of the power supply control signal applying the power supply voltage of the power amplifier, the time of the power supply control signal is matched with the time of the wireless frame signal based on the frame synchronization signal, as shown in figure 7.
Here, when the time of the power supply control signal and the time of the radio frame signal are matched in each minimum scheduling time unit, the operating state of the power amplifier may be adjusted so as to minimize the power consumption generated by the power amplifier in the period corresponding to each minimum scheduling time unit.
The implementation principle of the cache module is as follows:
and if the time of the wireless frame signal corresponding to each minimum scheduling time unit reaching the power amplifier is later than the time of the power supply control signal applying the power supply voltage of the power amplifier, the time of the wireless frame signal is matched with the time of the power supply control signal based on the frame synchronization signal.
Here, a buffer module is added to the original normal data path, and because the voltage and power calculation module needs time, the module mainly realizes the alignment of the control signal and the data stream signal in time.
The implementation principle of the modulation power supply is as follows:
The modulation power supply is divided into two groups, one group is a power supply for supplying power to the grid voltage, the power consumption is lower, and the modulation power supply is a common DAC. The other group is a power supply for supplying power to the drain electrode, namely a fast voltage regulation power supply, the regulation speed is not lower than the minimum dispatching period of the signal, the response speed is far lower than the minimum dispatching period of the signal, and the power supply is a common DC-DC module, and the regulation period is required to be smaller than 14K (71 us) by taking the bandwidth of a mobile communication 90M signal as an example, and the response speed is preferably about 1 us.
Implementation principle of DPD processing module:
the period of DPD processing is smaller than the period of the minimum scheduling time unit, so that the DPD correction data can be ensured to be updated in a rapid iteration mode, and the state of the power amplifier can be tracked rapidly. For example, each link corresponds to a DPD processing module, for 90M signals, with a 491.52MHz rate, 20.34us is needed to collect 9000 points, and the DPD calculation time is not greater than 20.34us.
Here, the power amplifier control circuit provided by the embodiment of the invention has the following advantages:
(1) And calculating the average value and/or the peak value of the voltage (power) of the wireless frame signal in the minimum scheduling time unit, and adjusting the grid voltage supply voltage and the drain electrode supply voltage of the Power Amplifier (PA) in each minimum scheduling time unit according to the average value and/or the peak value of the voltage (power), so that the power amplifier works in low power consumption when the linearity is met.
(2) And generating a power supply control signal according to the average value and/or the peak value of the voltage/power of the wireless ballast signal in the minimum scheduling time unit, and controlling the time of the power supply control signal to be synchronous with the time of the wireless frame signal.
(3) A scheme for adjusting the power supply voltage of a power amplifier in real time according to the average value and/or peak value of the voltage (power) of a radio frame signal in a minimum scheduling time unit in a broadband mobile communication system is provided.
By adopting the technical scheme provided by the embodiment of the invention, the power supply voltage of the power amplifier in each minimum scheduling time unit is adjusted through the first parameter value and/or the second parameter value of the wireless frame signal in the minimum scheduling time unit, so that the lowest power consumption of the power amplifier is realized.
The embodiment of the invention provides a power amplifier control method, which is applied to base station equipment, as shown in fig. 8, and comprises the following steps:
step 801, acquiring a plurality of radio frame signals corresponding to a minimum scheduling time unit, and calculating a first parameter value and/or a second parameter value of each radio frame signal;
Step 802, generating a power supply control signal based on the calculated first parameter values and/or the second parameter values;
Step 803, controlling the power supply voltage of the power amplifier by using the power supply control signal so as to minimize the power consumption generated by the power amplifier when the plurality of wireless frame signals are input.
In practical application, the grid power supply voltage and the drain power supply voltage input by the power amplifier in each minimum scheduling time unit can be adjusted based on the average value and/or the peak value of the voltage of the wireless frame signal in each minimum scheduling time unit, and the grid power supply voltage and the drain power supply voltage input by the power amplifier in each minimum scheduling time unit can also be adjusted based on the average value and/or the peak value of the power of the wireless frame signal in each minimum scheduling time unit.
Based on this, in an embodiment, the generating the power supply control signal based on the calculated respective first parameter value and/or the second parameter value comprises:
Determining a first control signal corresponding to a corresponding first parameter value according to the corresponding relation between the parameter value and the control signal for each first parameter value to obtain a plurality of first control signals;
And/or the number of the groups of groups,
And determining a second control signal corresponding to the corresponding second parameter value according to the corresponding relation between the parameter value and the control signal for each second parameter value to obtain a plurality of second control signals, and generating a power supply control signal based on the plurality of second control signals and the period of the minimum scheduling time unit.
In practical application, the power amplifier can amplify the input wireless frame signal under the condition that the grid electrode and the drain electrode supply power simultaneously to obtain output power, and in order to enable the power consumption generated by the power amplifier in the output power to be lower, a power supply control signal for controlling the grid electrode and the drain electrode to supply power can be generated according to each wireless frame signal corresponding to the minimum scheduling time unit, and the time of the power supply control signal and the wireless frame signal corresponding to each minimum scheduling time unit are kept to realize time synchronization, so that the power consumption generated by the power amplifier in the period corresponding to each minimum scheduling time unit is the lowest.
Based on this, in an embodiment, the controlling the supply voltage of the power amplifier using the supply control signal includes:
controlling the power supply control signal and the wireless frame signal to realize time synchronization;
and controlling a gate supply voltage and a drain supply voltage of a power amplifier by using a supply control signal which is time-synchronized with the radio frame signals, so that the power consumption of the power amplifier is the lowest when the plurality of radio frame signals are input.
In an embodiment, the controlling the power supply control signal to achieve time synchronization with the radio frame signal includes:
acquiring a frame synchronization signal;
when the frame synchronization signal is utilized to determine that the starting time of the power supply control signal is larger than the starting time of the wireless frame signal, calculating a first time difference between the starting time of the wireless frame signal and the starting time of the power supply control signal;
and adjusting the starting time of the power supply control signal by utilizing the first time difference so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
In practical application, if the time of the wireless frame signal corresponding to each minimum schedule time unit reaching the power amplifier is earlier than the time of the power supply control signal applying the power supply voltage of the power amplifier, the wireless will adjust the gate power supply voltage and the drain power supply voltage of the power amplifier in the period corresponding to each minimum schedule time unit, so that the start time of the power supply control signal and the start time of the wireless frame signal in each minimum schedule time unit need to be controlled to achieve synchronization.
In practical application, if the time of the wireless frame signal corresponding to each minimum schedule time unit reaching the power amplifier is later than the time of the power supply control signal applying the power supply voltage of the power amplifier, the wireless will adjust the gate power supply voltage and the drain power supply voltage of the power amplifier in the period corresponding to each minimum schedule time unit, so that the start time of the wireless frame signal and the start time of the power supply control signal in each minimum schedule time unit need to be controlled to achieve synchronization.
Based on this, in an embodiment, the method further comprises:
acquiring a frame synchronization signal;
When the frame synchronization signal is used for determining that the starting time of the power supply control signal is smaller than the starting time of the wireless frame signal, calculating a second time difference between the starting time of the power supply control signal and the starting time of the wireless frame signal;
and according to the second time difference, the wireless frame signal is buffered so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
By adopting the technical scheme provided by the embodiment of the invention, the power supply voltage of the power amplifier in each minimum scheduling time unit is adjusted through the first parameter value and/or the second parameter value of the wireless frame signal in the minimum scheduling time unit, so that the lowest power consumption of the power amplifier is realized.
The embodiment of the invention also provides a base station, as shown in fig. 9, including:
A communication interface 91 capable of information interaction with other devices;
and the processor 92 is connected with the communication interface 91 and is used for executing the method provided by one or more technical schemes on the intelligent equipment side when running the computer program. And the computer program is stored on the memory 93.
It should be noted that, the specific processing procedures of the processor 92 and the communication interface 91 are detailed in the method embodiment, and are not described herein.
Of course, in practice, the various components in base station 90 are coupled together by bus system 94. It is understood that the bus system 94 is used to enable connected communication between these components. The bus system 94 includes, in addition to a data bus, a power bus, a motion recognition prediction bus, and a status signal bus. But for clarity of illustration the various buses are labeled as bus system 94 in fig. 9.
The memory 93 in the embodiment of the present application is used to store various types of data to support the operation of the base station 90. Examples of such data include any computer program for operation on the base station 90.
The method disclosed in the above embodiment of the present application may be applied to the processor 92 or implemented by the processor 92. The processor 92 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware or instructions in software in the processor 92. The Processor 92 described above may be a general purpose Processor, a digital data Processor (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor 92 may implement or perform the methods, steps and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the application can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the memory 93 and the processor 92 reads information from the memory 93 to perform the steps of the method in combination with its hardware.
In an exemplary embodiment, the base station 90 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, programmable logic devices (PLDs, programmable Logic Device), complex Programmable logic devices (CPLDs, complex Programmable Logic Device), field-Programmable gate arrays (FPGAs), general purpose processors, motion-recognition predictors, micro-motion-recognition predictors (MCUs, micro Controller Unit), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.
It will be appreciated that the memory (memory 93) of embodiments of the application can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. The non-volatile Memory may be, among other things, a Read Only Memory (ROM), a programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read-Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read-Only Memory (EEPROM, ELECTRICALLY ERASABLE PROGRAMMABLE READ-Only Memory), Magnetic random access Memory (FRAM, ferromagnetic random access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk-Only Memory (CD-ROM, compact Disc Read-Only Memory), which may be disk Memory or tape Memory. the volatile memory may be random access memory (RAM, random Access Memory) which acts as external cache memory. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), and, Double data rate synchronous dynamic random access memory (DDRSDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), Direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). the memory described by embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
In an exemplary embodiment, the present invention also provides a storage medium, i.e. a computer storage medium, in particular a computer readable storage medium, for example comprising a memory 93 storing a computer program executable by the processor 92 of the base station 90 for performing the steps of the method of predicting server side of the aforementioned action recognition. The computer readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM.
It should be noted that "first," "second," etc. are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
In addition, the embodiments of the present invention may be arbitrarily combined without any collision.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. A power amplifier control circuit, the circuit comprising:
The computing circuit is used for acquiring a plurality of wireless frame signals corresponding to the minimum scheduling time unit, and computing a first parameter value and/or a second parameter value of each wireless frame signal;
a generation circuit for generating a power supply control signal based on the calculated respective first parameter value and/or the second parameter value, and the period of the minimum schedule time unit;
a control circuit for controlling a power supply voltage of a power amplifier using the power supply control signal so as to minimize power consumption generated by the power amplifier when the plurality of radio frame signals are input;
the circuit further comprises:
the power supply control circuit comprises a buffer circuit, a power supply control circuit and a wireless frame signal receiving circuit, wherein the buffer circuit is used for acquiring a frame synchronization signal, calculating a second time difference between the starting time of the power supply control signal and the starting time of the wireless frame signal when the starting time of the power supply control signal is determined to be smaller than the starting time of the wireless frame signal by utilizing the frame synchronization signal, and buffering the wireless frame signal according to the second time difference so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
2. The circuit according to claim 1, wherein the generating circuit is specifically configured to:
Determining a first control signal corresponding to a corresponding first parameter value according to the corresponding relation between the parameter value and the control signal for each first parameter value to obtain a plurality of first control signals;
And/or the number of the groups of groups,
And determining a second control signal corresponding to the corresponding second parameter value according to the corresponding relation between the parameter value and the control signal for each second parameter value to obtain a plurality of second control signals, and generating a power supply control signal based on the plurality of second control signals and the period of the minimum scheduling time unit.
3. The circuit according to claim 1 or 2, wherein the control circuit comprises:
the time adjusting circuit is used for controlling the power supply control signal and the wireless frame signal to realize time synchronization;
And the modulation power supply circuit is used for controlling the grid power supply voltage and the drain power supply voltage of the power amplifier by using the power supply control signal which is in time synchronization with the wireless frame signals, so that the power consumption of the power amplifier is the lowest when the plurality of wireless frame signals are input.
4. A circuit according to claim 3, wherein the time adjustment circuit is specifically configured to:
acquiring a frame synchronization signal;
when the frame synchronization signal is utilized to determine that the starting time of the power supply control signal is larger than the starting time of the wireless frame signal, calculating a first time difference between the starting time of the wireless frame signal and the starting time of the power supply control signal;
and adjusting the starting time of the power supply control signal by utilizing the first time difference so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
5. The power amplifier control method is characterized by comprising the following steps of:
Calculating a first parameter value and/or a second parameter value of each wireless frame signal;
generating a power supply control signal based on the calculated respective first parameter value and/or the second parameter value and the period of the minimum schedule time unit;
Controlling a power supply voltage of a power amplifier using the power supply control signal so as to minimize power consumption generated by the power amplifier when the plurality of radio frame signals are input;
The method further comprises the steps of:
acquiring a frame synchronization signal;
When the frame synchronization signal is used for determining that the starting time of the power supply control signal is smaller than the starting time of the wireless frame signal, calculating a second time difference between the starting time of the power supply control signal and the starting time of the wireless frame signal;
and according to the second time difference, the wireless frame signal is buffered so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
6. Method according to claim 5, characterized in that the generating of the power supply control signal based on the calculated respective first parameter value and/or the second parameter value and the period of the minimum schedule time unit comprises:
Determining a first control signal corresponding to a corresponding first parameter value according to the corresponding relation between the parameter value and the control signal for each first parameter value to obtain a plurality of first control signals;
And/or the number of the groups of groups,
And determining a second control signal corresponding to the corresponding second parameter value according to the corresponding relation between the parameter value and the control signal for each second parameter value to obtain a plurality of second control signals, and generating a power supply control signal based on the plurality of second control signals and the period of the minimum scheduling time unit.
7. The method according to claim 5 or 6, wherein said controlling the supply voltage of the power amplifier with said supply control signal comprises:
controlling the power supply control signal and the wireless frame signal to realize time synchronization;
and controlling a gate supply voltage and a drain supply voltage of a power amplifier by using a supply control signal which is time-synchronized with the radio frame signals, so that the power consumption of the power amplifier is the lowest when the plurality of radio frame signals are input.
8. The method of claim 7, wherein said controlling said power control signal to achieve time synchronization with said radio frame signal comprises:
acquiring a frame synchronization signal;
when the frame synchronization signal is utilized to determine that the starting time of the power supply control signal is larger than the starting time of the wireless frame signal, calculating a first time difference between the starting time of the wireless frame signal and the starting time of the power supply control signal;
and adjusting the starting time of the power supply control signal by utilizing the first time difference so as to control the power supply control signal and the wireless frame signal to realize time synchronization.
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