Power amplifier control circuit and method

Abstract

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

[0001] The present invention relates to the field of wireless communication technology, and in particular to a power amplifier control circuit and method. Background Art

[0002] With the rapid development of data services, the requirements for network coverage are getting higher and higher. In order to meet the network coverage requirements, a large number of base station devices can be deployed. Usually, a signal processing unit and a power amplifier can be set in the base station device; wherein the signal processing unit is used to perform signal processing on the scheduled wireless frame signal, and the power amplifier is used to amplify the wireless frame signal after signal processing, and the amplified wireless frame signal is used to transmit to the terminal. At present, as the bandwidth of the wireless frame signal becomes larger and larger, the power consumption of the base station device becomes larger and larger, resulting in a worse energy-saving effect of the base station device. Summary of the invention

[0003] In view of this, an embodiment of the present invention is intended to provide a power amplifier control circuit and method.

[0004] The technical solution of the embodiment of the present invention is achieved as follows:

[0005] At least one embodiment of the present invention provides a power amplifier control circuit, the circuit comprising:

[0006] A calculation circuit, used to obtain multiple radio frame signals corresponding to the minimum scheduling time unit; calculate the first parameter value and / or the second parameter value of each radio frame signal;

[0007] A generating circuit, configured to generate a power supply control signal based on the calculated first parameter values ​​and / or the second parameter values;

[0008] The control circuit is used to control the power supply voltage of the 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.

[0009] In addition, according to at least one embodiment of the present invention, the generating circuit is specifically configured to:

[0010] For each of the first parameter values, according to the corresponding relationship between the parameter value and the control signal, determine the first control signal corresponding to the corresponding first parameter value to obtain multiple first control signals; based on the multiple first control signals and the period of the minimum scheduling time unit, generate a power supply control signal;

[0011] and / or,

[0012] For each second parameter value in each second parameter value, determine the second control signal corresponding to the corresponding second parameter value according to the corresponding relationship between the parameter value and the control signal, and obtain multiple second control signals; based on the multiple second control signals and the period of the minimum scheduling time unit, generate a power supply control signal.

[0013] In addition, according to at least one embodiment of the present invention, the control circuit includes:

[0014] A time adjustment circuit, used for controlling the power supply control signal and the wireless frame signal to achieve time synchronization;

[0015] The modulation power supply circuit is used to control the gate supply voltage and drain supply voltage of the power amplifier using a power supply control signal that is time synchronized with the wireless frame signal, so that the power amplifier generates the lowest power consumption when the multiple wireless frame signals are input.

[0016] In addition, according to at least one embodiment of the present invention, the time adjustment circuit is specifically used for:

[0017] Get frame synchronization signal;

[0018] When the frame synchronization signal is used to determine that the start time of the power control signal is greater than the start time of the wireless frame signal, a first time difference between the start time of the wireless frame signal and the start time of the power control signal is calculated; the start time of the wireless frame signal represents the time when the wireless frame signal arrives at the input port of the power amplifier;

[0019] The start time of the power supply control signal is adjusted by utilizing the first time difference, so as to control the power supply control signal and the wireless frame signal to achieve time synchronization.

[0020] In addition, according to at least one embodiment of the present invention, the circuit further includes:

[0021] A cache circuit is used to obtain a frame synchronization signal; when the frame synchronization signal is used to determine that the start time of the power supply control signal is less than the start time of the wireless frame signal, a second time difference between the start time of the power supply control signal and the start time of the wireless frame signal is calculated; according to the second time difference, the wireless frame signal is cached to control the power supply control signal and the wireless frame signal to achieve time synchronization.

[0022] At least one embodiment of the present invention provides a power amplifier control method, comprising:

[0023] Acquire multiple radio frame signals corresponding to the minimum scheduling time unit; calculate the first parameter value and / or the second parameter value of each radio frame signal;

[0024] Generate a power supply control signal based on the calculated first parameter values ​​and / or the second parameter values;

[0025] The power supply control signal is used to control the power supply voltage of the power amplifier so that the power amplifier generates the lowest power consumption when the multiple wireless frame signals are input.

[0026] In addition, according to at least one embodiment of the present invention, generating a power supply control signal based on the calculated first parameter values ​​and / or the second parameter values ​​includes:

[0027] For each of the first parameter values, according to the corresponding relationship between the parameter value and the control signal, determine the first control signal corresponding to the corresponding first parameter value to obtain multiple first control signals; based on the multiple first control signals and the period of the minimum scheduling time unit, generate a power supply control signal;

[0028] and / or,

[0029] For each second parameter value in each second parameter value, determine the second control signal corresponding to the corresponding second parameter value according to the corresponding relationship between the parameter value and the control signal, and obtain multiple second control signals; based on the multiple second control signals and the period of the minimum scheduling time unit, generate a power supply control signal.

[0030] In addition, according to at least one embodiment of the present invention, the controlling the power supply voltage of the power amplifier by using the power supply control signal includes:

[0031] Controlling the power supply control signal and the wireless frame signal to achieve time synchronization;

[0032] The gate power supply voltage and the drain power supply voltage of the power amplifier are controlled by using a power supply control signal that is time synchronized with the wireless frame signal, so that the power amplifier generates the lowest power consumption when the multiple wireless frame signals are input.

[0033] In addition, according to at least one embodiment of the present invention, the controlling the power supply control signal and the wireless frame signal to achieve time synchronization includes:

[0034] Get frame synchronization signal;

[0035] When the frame synchronization signal is used to determine that the start time of the power control signal is greater than the start time of the wireless frame signal, a first time difference between the start time of the wireless frame signal and the start time of the power control signal is calculated; the start time of the wireless frame signal represents the time when the wireless frame signal arrives at the input port of the power amplifier;

[0036] The start time of the power supply control signal is adjusted by utilizing the first time difference, so as to control the power supply control signal and the wireless frame signal to achieve time synchronization.

[0037] In addition, according to at least one embodiment of the present invention, the method further includes:

[0038] Get frame synchronization signal;

[0039] When it is determined by using the frame synchronization signal that the start time of the power control signal is less than the start time of the wireless frame signal, calculating a second time difference between the start time of the power control signal and the start time of the wireless frame signal;

[0040] The wireless frame signal is cached according to the second time difference, so as to control the power supply control signal and the wireless frame signal to achieve time synchronization.

[0041] At least one embodiment of the present invention provides a power amplifier control circuit and method, the method comprising: obtaining multiple wireless frame signals corresponding to the minimum scheduling time unit; calculating the first parameter value and / or the second parameter value of each wireless frame signal; generating a power supply control signal based on the calculated first parameter value and / or the second parameter value; using the power supply control signal to control the power supply voltage of the power amplifier so that the power amplifier generates the lowest power consumption when the multiple wireless frame signals are input. The technical solution provided by the embodiment of the present invention is adopted to adjust the power supply voltage of the power amplifier in each minimum scheduling time unit through the first parameter value and / or the second parameter value of the wireless frame signal in the minimum scheduling time unit, so as to achieve the lowest power consumption of the power amplifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of an ideal envelope tracking technology in the related art;

[0043] Figure 2 It is a schematic diagram of the structure of a power amplifier control circuit provided by an embodiment of the present invention;

[0044] Figure 3 is a schematic diagram of the corresponding relationship between the efficiency and the supply voltage of the power amplifier according to an embodiment of the present invention;

[0045] Figure 4 is a schematic diagram of output power of a power amplifier according to an embodiment of the present invention;

[0046] Figure 5 It is a schematic diagram of a specific implementation structure of a power amplifier control circuit according to an embodiment of the present invention;

[0047] Figure 6 is a schematic diagram of a radio frame signal corresponding to a minimum scheduling time unit according to an embodiment of the present invention;

[0048] Figure 7 is a schematic diagram of a wireless frame signal, a power supply control signal and a frame synchronization signal according to an embodiment of the present invention;

[0049] Figure 8 is a schematic diagram of an implementation flow of a power control method according to an embodiment of the present invention;

[0050] Fig. 9 It is a schematic diagram of the composition structure of a base station device to which the power control method according to an embodiment of the present invention is applied. DETAILED DESCRIPTION

[0051] Before introducing the technical solution of the embodiment of the present invention, the related technology is first described.

[0052] In the related technologies, with the rapid development of the wireless communication market, especially the explosion of data services in recent years, the requirements for network coverage and capacity are getting higher and higher. To this end, operators have invested heavily and deployed a large number of wireless networks of various standards. In this case, the total power consumption of the network is getting higher and higher, and the energy-saving ability of the base station becomes particularly important. At present, the related technologies only involve time slot shutdown, carrier shutdown and channel shutdown, sleep, whole system shutdown and other solutions, and do not involve technical solutions for how to minimize the power consumption of the power amplifier. At present, many power-saving solutions have achieved power saving to varying degrees. Because the bandwidth of the communication system is getting wider and wider, currently up to 200M, the ideal envelope tracking technology cannot achieve the lowest power consumption of the power amplifier due to the limitation of the device response capability. Figure 1 This is a schematic diagram of an ideal envelope tracking technology in the related art. In the related art, when the bandwidth of the wireless frame signal input to the power amplifier is 90M, the period of the wireless frame signal in a minimum scheduling time unit is less than 8ns, while the response capability of the power supply controlling the power amplifier is at the us level, and the two cannot be synchronized, resulting in the inability to achieve the lowest power consumption of the power amplifier in the broadband communication system.

[0053] Typically, a base station device may be provided with a signal processing unit and a power amplifier; wherein the signal processing unit is used to process the scheduled wireless frame signal, and the power amplifier is used to amplify the wireless frame signal after signal processing, and the amplified wireless frame signal is used to transmit to the terminal. At present, as the bandwidth of the wireless frame signal becomes larger and larger, the power consumption of the base station device becomes larger and larger, resulting in a worse energy-saving effect of the base station device.

[0054] Based on this, an embodiment of the present invention provides a power amplifier control circuit, which includes: a calculation circuit for obtaining multiple wireless frame signals corresponding to the minimum scheduling time unit; calculating the first parameter value and / or the second parameter value of each wireless frame signal; a generation circuit for generating a power supply control signal based on the calculated first parameter value and / or the second parameter value; and a control circuit for controlling the power supply voltage of the 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.

[0055] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0056] The embodiment of the present invention provides a power amplifier control circuit, such as Figure 2 As shown, the circuit comprises:

[0057] The calculation circuit 21 is used to obtain multiple radio frame signals corresponding to the minimum scheduling time unit; calculate the first parameter value and / or the second parameter value of each radio frame signal;

[0058] A generating circuit 22, configured to generate a power supply control signal based on the calculated first parameter values ​​and / or the second parameter values;

[0059] The control circuit 23 is used to control the power supply voltage of the power amplifier using the power supply control signal so as to minimize the power consumption generated by the power amplifier when the multiple wireless frame signals are input.

[0060] Here, the minimum scheduling time unit may refer to the minimum time unit that the base station device schedules to the terminal, which may specifically be a time slot or an orthogonal frequency division multiplexing (OFDM) symbol. The first parameter value of the wireless frame signal may refer to the mean value of the voltage of the wireless frame signal within the minimum scheduling time unit, and the second parameter value may refer to the peak value of the voltage of the wireless frame signal within the minimum scheduling time unit; or, the first parameter value of the wireless frame signal may refer to the mean value of the power of the wireless frame signal within the minimum scheduling time unit, and the second parameter value may refer to the peak value of the power of the wireless frame signal within the minimum scheduling time unit.

[0061] Here, considering that the bandwidth of the wireless frame signal is getting larger and larger, that is, the period of the minimum scheduling time unit is getting smaller and smaller, in this case, if the power supply period of the power amplifier is larger than the period of the minimum scheduling time unit, the power amplifier may transmit at the maximum power in each minimum scheduling time unit, resulting in increased power consumption. Therefore, the mean 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 gate power supply voltage and drain power supply voltage input to the power amplifier in each minimum scheduling time unit can be adjusted based on the calculated mean and / or peak value of the voltage (or power), so as to ensure that the power amplifier outputs a transmission power matching the wireless frame signal in each minimum scheduling time unit, thereby avoiding transmission at the maximum power, which can save the power consumption of the power amplifier.

[0062] In actual application, the gate supply voltage and drain supply voltage input to the power amplifier in each minimum scheduling time unit can be adjusted based on the average and / or peak value of the voltage of the wireless frame signal in each minimum scheduling time unit; the gate supply voltage and drain supply voltage input to the power amplifier in each minimum scheduling time unit can also be adjusted based on the average and / or peak value of the power of the wireless frame signal in each minimum scheduling time unit.

[0063] Based on this, in one embodiment, the generating circuit 22 is specifically used for:

[0064] For each of the first parameter values, according to the corresponding relationship between the parameter value and the control signal, determine the first control signal corresponding to the corresponding first parameter value to obtain multiple first control signals; based on the multiple first control signals and the period of the minimum scheduling time unit, generate a power supply control signal;

[0065] and / or,

[0066] For each second parameter value in each second parameter value, determine the second control signal corresponding to the corresponding second parameter value according to the corresponding relationship between the parameter value and the control signal, and obtain multiple second control signals; based on the multiple second control signals and the period of the minimum scheduling time unit, generate a power supply control signal.

[0067] The process of generating the power supply control signal by the generating circuit 22 is described in detail below, specifically including the following situations:

[0068] In the first case, a power supply control signal is generated based on the average voltage of multiple wireless frame signals corresponding to the minimum scheduling time unit and the period of the minimum scheduling time unit to adjust the gate supply voltage and drain supply voltage of the power amplifier in each minimum scheduling time unit.

[0069] Specifically, for each minimum scheduling time unit, a voltage mean is determined; for the means of two adjacent voltages, the corresponding time interval is set as the period of the minimum scheduling time unit, and the means of the two adjacent voltages are used as the amplitude, and the time interval corresponding to the means of the two adjacent voltages is used as the period, to obtain a first control signal corresponding to the mean of the voltage. As shown in Table 1, for minimum scheduling time unit 1, the calculated voltage mean is mean 1, for minimum scheduling time unit 2, the calculated voltage mean is mean 2, and so on, for minimum scheduling time unit n, the calculated voltage mean is mean n, so that the voltage mean 1 and mean 2 can be used as the amplitude, and the time interval corresponding to mean 1 and mean 2, that is, the period of the minimum scheduling time unit, can be used as the period to obtain the first control signal, that is, control signal 1, and so on, to obtain control signal n, and finally, control signal 1 to control signal n are synthesized into a power supply control signal.

[0070] Minimum scheduling time unit Input control information The first control signal Minimum scheduling time unit 1 Mean voltage 1 Control signal 1 Minimum scheduling time unit 2 Mean voltage 2 Control signal 2 …… …… …… Minimum scheduling time unit n The mean value of voltage n Control signal n

[0071] Table 1

[0072] In the second case, based on the peak values ​​of the voltages of multiple wireless frame signals corresponding to the minimum scheduling time units and the period of the minimum scheduling time unit, a power supply control signal is generated to adjust the gate supply voltage and the drain supply voltage of the power amplifier within each minimum scheduling time unit.

[0073] Specifically, for each minimum scheduling time unit, a power peak is determined; for two adjacent power peaks, the corresponding time interval is set as the period of the minimum scheduling time unit, and the two adjacent power peaks are used as the amplitude, and the time interval corresponding to the two adjacent power peaks is used as the period, to obtain the first control signal corresponding to the power peak. As shown in Table 2, for minimum scheduling time unit 1, the calculated power peak is peak 1, for minimum scheduling time unit 2, the calculated power peak is peak 2, and so on, for minimum scheduling time unit n, the calculated power peak is peak n, so that the power peak 1 and peak 2 can be used as the amplitude, and the time interval corresponding to peak 1 and peak 2, that is, the period of the minimum scheduling time unit, can be used as the period to obtain the first control signal, that is, control signal 1, and so on to obtain control signal n, and finally, control signal 1 to control signal n are synthesized into a power supply control signal.

[0074] Minimum scheduling time unit Input control information Power The first control signal Minimum scheduling time unit 1 Peak power 1 P≥Pth1 Control signal 1 Minimum scheduling time unit 2 Peak power 2 Pth1≥P≥Pth2 Control signal 2 …… …… …… …… Minimum scheduling time unit n Peak power 3 Pthn≥P Control signal n

[0075] Table 2

[0076] In the third case, based on the mean and peak values ​​of the voltages of multiple wireless frame signals corresponding to the minimum scheduling time units and the period of the minimum scheduling time unit, a power supply control signal is generated to adjust the gate supply voltage and drain supply voltage of the power amplifier within each minimum scheduling time unit.

[0077] In actual application, the power amplifier can amplify the input wireless frame signal when the gate and drain are powered at the same time to obtain output power. In order to make the power consumption of the power amplifier lower when outputting power, a power supply control signal for controlling the power supply of the gate and drain 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 can be kept synchronized with the wireless frame signal corresponding to each minimum scheduling time unit. In this way, the power consumption generated by the power amplifier in the period corresponding to each minimum scheduling time unit can be minimized.

[0078] Based on this, in one embodiment, the control circuit 23 includes:

[0079] A time adjustment circuit, used for controlling the power supply control signal and the wireless frame signal to achieve time synchronization;

[0080] The modulation power supply circuit is used to control the gate supply voltage and drain supply voltage of the power amplifier using a power supply control signal that is time synchronized with the wireless frame signal, so that the power amplifier generates the lowest power consumption when the multiple wireless frame signals are input.

[0081] Here, when the base station equipment is working in the existing network, the network load changes in real time with the business demand, so the maximum output power of the base station equipment is generally determined according to the full load requirement. The output power of the base station equipment is generated by the power amplifier. One feature of the power amplifier is that the working efficiency is the highest at the maximum output power, and the efficiency decreases as the output power decreases. For example, when the power amplifier is fully loaded, the output power = 200W, the efficiency = 40%, and the power consumption of the power amplifier = 500W; when the power amplifier output power = 90W, the efficiency becomes 38%, and the power consumption of the power amplifier = 263W. It can be seen that the output power of the power amplifier has dropped by half, and the power consumed by the power amplifier has not dropped by half, but when the output power is further reduced, the efficiency will be further reduced.

[0082] Figure 3 This is a schematic diagram of the corresponding relationship between the power amplifier efficiency and the supply voltage, such as Figure 3 As shown, after the gate supply voltage and the drain supply voltage of the power amplifier are adjusted, the power amplifier can be ensured to be at the best efficiency, thereby reducing power consumption. Figure 4 is a schematic diagram of the output power of the power amplifier, such as Figure 4As shown, by using a power supply control signal that is time synchronized with the wireless frame signal to control the gate power supply voltage and the drain power supply voltage of the power amplifier, it can be ensured that the transmission power of the power amplifier in each scheduling time unit corresponds to the minimum power consumption.

[0083] In actual application, if the time when the wireless frame signal corresponding to each minimum scheduling time unit arrives at the power amplifier is earlier than the time when the power supply control signal applies the power supply voltage of the power amplifier, it will cause the wireless to adjust the gate supply voltage and drain supply voltage of the power amplifier within the period corresponding to each minimum scheduling time unit. In this way, it is necessary to control the start time of the power supply control signal to be synchronized with the start time of the wireless frame signal in each minimum scheduling time unit.

[0084] Based on this, in one embodiment, the time adjustment circuit is specifically used for:

[0085] Get frame synchronization signal;

[0086] When the frame synchronization signal is used to determine that the start time of the power control signal is greater than the start time of the wireless frame signal, a first time difference between the start time of the wireless frame signal and the start time of the power control signal is calculated; the start time of the wireless frame signal represents the time when the wireless frame signal arrives at the input port of the power amplifier;

[0087] The start time of the power supply control signal is adjusted by utilizing the first time difference, so as to control the power supply control signal and the wireless frame signal to achieve time synchronization.

[0088] In actual application, if the time when the wireless frame signal corresponding to each minimum scheduling time unit arrives at the power amplifier is later than the time when the power supply control signal applies the power supply voltage of the power amplifier, it will cause the wireless to adjust the gate supply voltage and drain supply voltage of the power amplifier within the period corresponding to each minimum scheduling time unit. In this way, it is necessary to control the start time of the wireless frame signal in each minimum scheduling time unit and the start time of the power supply control signal to achieve synchronization.

[0089] Based on this, in one embodiment, the circuit further includes:

[0090] A cache circuit is used to obtain a frame synchronization signal; when the frame synchronization signal is used to determine that the start time of the power supply control signal is less than the start time of the wireless frame signal, a second time difference between the start time of the power supply control signal and the start time of the wireless frame signal is calculated; according to the second time difference, the wireless frame signal is cached to control the power supply control signal and the wireless frame signal to achieve time synchronization.

[0091] The implementation principle of the power amplifier control circuit is described in detail below in conjunction with specific embodiments.

[0092] Figure 5 It is a schematic diagram of the specific implementation structure of the power amplifier control circuit. Figure 5 As shown, the power amplifier control circuit includes: a baseband signal processing module, a digital up converter (DUC, Digital Up Converters) / conditional random field (CRF, Conditional Random Fields) module, a digital pre-distortion (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 supply module, and a cache module; wherein,

[0093] The calculation circuit 21 is a voltage and power calculation module;

[0094] The generating circuit 22 is a control signal generating module;

[0095] The control circuit 23 includes: a time adjustment circuit and a modulation power supply circuit;

[0096] The time adjustment circuit is a time adjustment module;

[0097] The modulated power supply circuit is a modulated power supply module.

[0098] Here, the baseband signal processing module, DUC / CRF module, DPD processing module, and transmission module are existing circuit modules, and the voltage and power calculation module, control signal generation module, time adjustment module, modulation power supply module, and cache module are newly added circuit modules in the embodiment of the present invention.

[0099] The implementation principle of each module is described in detail below.

[0100] The implementation principle of the baseband signal processing module is as follows:

[0101] Generate a wireless frame signal corresponding to the minimum scheduling time unit, and transmit the generated wireless frame signal to the DUC / CRF module.

[0102] The implementation principle of the DUC / CRF module is as follows:

[0103] The wireless frame signal corresponding to the minimum scheduling time unit transmitted by the baseband signal processing module is received, and the wireless frame signal is subjected to DUC / CRF processing, and the wireless frame signal after DUC / CRF processing is transmitted to the voltage and power calculation module. The DUC processing may refer to performing up-conversion processing on the wireless frame signal.

[0104] The implementation principle of the voltage and power calculation module is as follows:

[0105] The wireless frame signal transmitted by the voltage and power calculation module is received, and the mean value and / or peak value of the voltage (or power) of the wireless frame signal within the minimum scheduling time unit is calculated.

[0106] Specifically, taking the wireless frame signal as a 5G mobile communication signal as an example, Figure 6 is a schematic diagram of a wireless frame signal corresponding to the minimum scheduling time unit, such as Figure 6 As shown, considering that although 5G mobile communication signals have different frame structures, each frame structure can be composed of symbols, and the length of each symbol is 71.4us, during service scheduling, the minimum scheduling time unit can also be a symbol, and the occupancy of the frequency domain within each symbol is determined, and the energy to be transmitted is consistent. That is to say, after a minimum scheduling time unit is determined, the wireless frame signal is relatively stable within the minimum scheduling time unit. Therefore, the voltage and power calculation module calculates the mean and / or peak value (1 / 900) of the voltage (or power) of the wireless frame signal within a minimum scheduling time unit.

[0107] It should be noted that when the occupancy rate of the resource block (RB), the occupied position of the RB, the number of streams, and the modulation mode are different, the mean and / or peak value of the wireless frame signal voltage (or power) corresponding to the minimum scheduling time unit will be affected. Considering that the frequency of the power supply control signal of the modulated power supply in the related art is far from the ns level and cannot match the period of the input wireless frame signal, a signal voltage and power calculation module is added in the embodiment of the present invention.

[0108] The implementation principle of the control signal generation module is as follows:

[0109] A power supply control signal is generated based on the mean and / or peak value of the voltage calculated by the voltage and power calculation module, and the period of the minimum scheduling time unit; or, a power supply control signal is generated based on the mean and / or peak value of the power calculated by the voltage and power calculation module, and the period of the minimum scheduling time unit.

[0110] Specifically, the amplitude of the power 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 change period of the power supply control signal is determined by the period of the minimum scheduling time unit. Among them, the amplitude can be determined by a lookup table, specifically determined by one or more of the mean and peak value of the power or the mean and peak value of the voltage. The lookup table can store the correspondence between the three types of information: input information (the mean and peak value of the power or one or more of the mean and peak value of the voltage), control signal (set for modulated power supply) and three-level debugging of the power amplifier.

[0111] The implementation principle of the time adjustment module is as follows:

[0112] Obtain a frame synchronization signal transmitted by the baseband signal processing module; wherein the period of the frame synchronization signal is the period of the minimum scheduling time unit; if the time when the wireless frame signal corresponding to each minimum scheduling time unit arrives at the power amplifier is earlier than the time when the power supply control signal applies the power supply voltage of the power amplifier, then based on the frame synchronization signal, the time of the power supply control signal is matched with the time of the wireless frame signal, such as Figure 7 shown.

[0113] Here, when the time of the power supply control signal matches the time of the wireless frame signal in each minimum scheduling time unit, the working state of the power amplifier can be adjusted to minimize the power consumption generated by the power amplifier in the period corresponding to each minimum scheduling time unit.

[0114] The implementation principle of the cache module is as follows:

[0115] Obtain a frame synchronization signal transmitted by a baseband signal processing module; wherein the period of the frame synchronization signal is the period of a minimum scheduling time unit; if the time when the wireless frame signal corresponding to each minimum scheduling time unit arrives at the power amplifier is later than the time when the power supply control signal applies the power supply voltage to the power amplifier, then based on the frame synchronization signal, the time of the wireless frame signal is matched with the time of the power supply control signal.

[0116] Here, a cache module is added to the original normal data path, because the voltage and power calculation modules require time. This module mainly realizes the time alignment of the control signal and the data stream signal.

[0117] The implementation principle of the modulated power supply is as follows:

[0118] The modulated power supply is divided into two groups. One group is the power supply for the gate voltage, which has relatively low power consumption and is a commonly used DAC. The other group is the power supply for the drain, which is a fast voltage adjustment power supply. The adjustment speed is not less than the minimum scheduling period of the signal, and the response speed is much less than the minimum scheduling period of the signal. It is a commonly used DC-DC module. Taking the 90M signal bandwidth of mobile communication as an example, its adjustment period needs to be less than 14K (71us), and the response speed is preferably around 1us.

[0119] The implementation principle of the DPD processing module:

[0120] The DPD processing cycle is smaller than the minimum scheduling time unit cycle to ensure that the DPD correction data is updated quickly and can quickly track the status of the power amplifier. For example, each link corresponds to a DPD processing module. For a 90M signal, a rate of 491.52MHz is used. It takes 20.34us to collect 9000 points. The DPD calculation time is no more than 20.34us.

[0121] Here, the power amplifier control circuit provided by the embodiment of the present invention has the following advantages:

[0122] (1) Calculate the mean and / or peak value of the voltage (power) of the wireless frame signal within the minimum scheduling time unit, and adjust the gate supply voltage and drain supply voltage of the power amplifier (PA) within each minimum scheduling time unit according to the mean and / or peak value of the voltage (power), so as to achieve low power consumption operation of the power amplifier while satisfying linearity.

[0123] (2) Generate a power supply control signal according to the mean value and / or peak value of the voltage / power of the wireless town signal within the minimum scheduling time unit, and control the timing of the power supply control signal to be synchronized with the timing of the wireless frame signal.

[0124] (3) A solution is provided for adjusting the power supply voltage of a power amplifier in real time according to the mean value and / or peak value of the voltage (power) of a wireless frame signal within a minimum scheduling time unit in a broadband mobile communication system.

[0125] By adopting the technical solution provided in the embodiment of the present 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 as to achieve the lowest power consumption of the power amplifier.

[0126] The embodiment of the present invention provides a power amplifier control method, which is applied to a base station device, such as Figure 8 As shown, the method includes:

[0127] Step 801: Acquire multiple radio frame signals corresponding to the minimum scheduling time unit; calculate the first parameter value and / or the second parameter value of each radio frame signal;

[0128] Step 802: Generate a power supply control signal based on the calculated first parameter values ​​and / or the second parameter values;

[0129] Step 803: Use the power supply control signal to control the power supply voltage of the power amplifier so that the power amplifier generates the lowest power consumption when the multiple wireless frame signals are input.

[0130] In actual application, the gate supply voltage and drain supply voltage input to the power amplifier in each minimum scheduling time unit can be adjusted based on the average value and / or peak value of the voltage of the wireless frame signal in each minimum scheduling time unit; the gate supply voltage and drain supply voltage input to the power amplifier in each minimum scheduling time unit can also be adjusted based on the average value and / or peak value of the power of the wireless frame signal in each minimum scheduling time unit.

[0131] Based on this, in one embodiment, generating a power supply control signal based on the calculated first parameter values ​​and / or the second parameter values ​​includes:

[0132] For each first parameter value among the first parameter values, according to the corresponding relationship between the parameter value and the control signal, determine the first control signal corresponding to the corresponding first parameter value to obtain multiple first control signals; based on the multiple first control signals and the period of the minimum scheduling time unit, generate a power supply control signal;

[0133] and / or,

[0134] For each second parameter value in each second parameter value, determine the second control signal corresponding to the corresponding second parameter value according to the corresponding relationship between the parameter value and the control signal, and obtain multiple second control signals; based on the multiple second control signals and the period of the minimum scheduling time unit, generate a power supply control signal.

[0135] In actual application, the power amplifier can amplify the input wireless frame signal when the gate and drain are powered at the same time to obtain output power. In order to make the power consumption of the power amplifier lower when outputting power, a power supply control signal for controlling the power supply of the gate and drain 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 can be kept synchronized with the wireless frame signal corresponding to each minimum scheduling time unit. In this way, the power consumption generated by the power amplifier in the period corresponding to each minimum scheduling time unit can be minimized.

[0136] Based on this, in one embodiment, controlling the power supply voltage of the power amplifier by using the power supply control signal includes:

[0137] Controlling the power supply control signal and the wireless frame signal to achieve time synchronization;

[0138] The gate power supply voltage and the drain power supply voltage of the power amplifier are controlled by using a power supply control signal that is time synchronized with the wireless frame signal, so that the power amplifier generates the lowest power consumption when the multiple wireless frame signals are input.

[0139] In one embodiment, controlling the power supply control signal and the wireless frame signal to achieve time synchronization includes:

[0140] Get frame synchronization signal;

[0141] When the frame synchronization signal is used to determine that the start time of the power control signal is greater than the start time of the wireless frame signal, a first time difference between the start time of the wireless frame signal and the start time of the power control signal is calculated; the start time of the wireless frame signal represents the time when the wireless frame signal arrives at the input port of the power amplifier;

[0142] The start time of the power supply control signal is adjusted by utilizing the first time difference, so as to control the power supply control signal and the wireless frame signal to achieve time synchronization.

[0143] In actual application, if the time when the wireless frame signal corresponding to each minimum scheduling time unit arrives at the power amplifier is earlier than the time when the power supply control signal applies the power supply voltage of the power amplifier, it will cause the wireless to adjust the gate supply voltage and drain supply voltage of the power amplifier within the period corresponding to each minimum scheduling time unit. In this way, it is necessary to control the start time of the power supply control signal to be synchronized with the start time of the wireless frame signal in each minimum scheduling time unit.

[0144] In actual application, if the time when the wireless frame signal corresponding to each minimum scheduling time unit arrives at the power amplifier is later than the time when the power supply control signal applies the power supply voltage of the power amplifier, it will cause the wireless to adjust the gate supply voltage and drain supply voltage of the power amplifier within the period corresponding to each minimum scheduling time unit. In this way, it is necessary to control the start time of the wireless frame signal in each minimum scheduling time unit and the start time of the power supply control signal to achieve synchronization.

[0145] Based on this, in one embodiment, the method further includes:

[0146] Get frame synchronization signal;

[0147] When it is determined by using the frame synchronization signal that the start time of the power control signal is less than the start time of the wireless frame signal, calculating a second time difference between the start time of the power control signal and the start time of the wireless frame signal;

[0148] The wireless frame signal is cached according to the second time difference, so as to control the power supply control signal and the wireless frame signal to achieve time synchronization.

[0149] By adopting the technical solution provided in the embodiment of the present 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 as to achieve the lowest power consumption of the power amplifier.

[0150] The embodiment of the present invention further provides a base station, such as Fig. 9 As shown, including:

[0151] Communication interface 91, capable of exchanging information with other devices;

[0152] The processor 92 is connected to the communication interface 91 and is used to execute the method provided by one or more technical solutions of the smart device side when running the computer program. The computer program is stored in the memory 93.

[0153] It should be noted that the specific processing process of the processor 92 and the communication interface 91 is detailed in the method embodiment and will not be repeated here.

[0154] Of course, in actual application, the various components in the base station 90 are coupled together through the bus system 94. It can be understood that the bus system 94 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 94 also includes a power bus, a prediction bus for action recognition, and a state signal bus. However, for the sake of clarity, Fig. 9 Various buses are labeled as bus system 94 .

[0155] 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 used to operate on the base station 90.

[0156] The method disclosed in the above embodiment of the present application can 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 the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 92. The above-mentioned processor 92 may be a general-purpose processor, a digital data processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 92 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in the memory 93, and the processor 92 reads the information in the memory 93 and completes the steps of the above method in combination with its hardware.

[0157] In an exemplary embodiment, the base station 90 can be implemented by one or more application-specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field-programmable gate array (FPGA), general-purpose processor, motion recognition predictor, micro-motion recognition predictor (MCU), micro controller unit (Microprocessor), or other electronic components to execute the aforementioned method.

[0158] It can be understood that the memory (memory 93) of the embodiment of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and direct RAMbus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0159] In an exemplary embodiment, the present invention also provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, for example, a memory 93 storing a computer program, and the computer program can be executed by a processor 92 of a base station 90 to complete the steps of the aforementioned action recognition prediction server-side method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface storage, optical disk, or CD-ROM.

[0160] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0161] In addition, the technical solutions described in the embodiments of the present invention can be arbitrarily combined without conflict.

[0162] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A power amplifier control circuit, characterized in that: The circuit comprises: A calculation circuit, used to obtain multiple radio frame signals corresponding to the minimum scheduling time unit; calculate the first parameter value and / or the second parameter value of each radio frame signal; A generating circuit, configured to generate a power supply control signal based on the calculated first parameter values ​​and / or the second parameter values, and a period of the minimum scheduling time unit; A control circuit, used to control the power supply voltage of the 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; The circuit further comprises: A cache circuit is used to obtain a frame synchronization signal; when the frame synchronization signal is used to determine that the start time of the power supply control signal is less than the start time of the wireless frame signal, a second time difference between the start time of the power supply control signal and the start time of the wireless frame signal is calculated; according to the second time difference, the wireless frame signal is cached to control the power supply control signal and the wireless frame signal to achieve time synchronization.

2. The circuit according to claim 1, characterized in that The generating circuit is specifically used for: For each of the first parameter values, according to the corresponding relationship between the parameter value and the control signal, determine the first control signal corresponding to the corresponding first parameter value to obtain multiple first control signals; based on the multiple first control signals and the period of the minimum scheduling time unit, generate a power supply control signal; and / or, For each second parameter value among the second parameter values, according to the corresponding relationship between the parameter value and the control signal, determine the second control signal corresponding to the corresponding second parameter value to obtain a plurality of second control signals; A power supply control signal is generated based on the multiple second control signals and the period of the minimum scheduling time unit.

3. The circuit according to claim 1 or 2, characterized in that: The control circuit comprises: A time adjustment circuit, used for controlling the power supply control signal and the wireless frame signal to achieve time synchronization; The modulation power supply circuit is used to control the gate supply voltage and drain supply voltage of the power amplifier using a power supply control signal that is time synchronized with the wireless frame signal, so that the power amplifier generates the lowest power consumption when the multiple wireless frame signals are input.

4. The circuit according to claim 3, characterized in that The time adjustment circuit is specifically used for: Get frame synchronization signal; When the frame synchronization signal is used to determine that the start time of the power control signal is greater than the start time of the wireless frame signal, a first time difference between the start time of the wireless frame signal and the start time of the power control signal is calculated; the start time of the wireless frame signal represents the time when the wireless frame signal arrives at the input port of the power amplifier; The start time of the power supply control signal is adjusted by utilizing the first time difference, so as to control the power supply control signal and the wireless frame signal to achieve time synchronization.

5. A power amplifier control method, characterized in that: include: Acquire multiple wireless frame signals corresponding to the minimum scheduling time unit; Calculating a first parameter value and / or a second parameter value for each wireless frame signal; Generate a power supply control signal based on the calculated first parameter values ​​and / or the second parameter values, and the period of the minimum scheduling time unit; Using the power supply control signal, control the power supply voltage of the power amplifier so that the power amplifier generates the lowest power consumption when the multiple wireless frame signals are input; The method further comprises: Get frame synchronization signal; When it is determined by using the frame synchronization signal that the start time of the power control signal is less than the start time of the wireless frame signal, calculating a second time difference between the start time of the power control signal and the start time of the wireless frame signal; The wireless frame signal is cached according to the second time difference, so as to control the power supply control signal and the wireless frame signal to achieve time synchronization.

6. The method according to claim 5, characterized in that The generating of the power supply control signal based on the calculated first parameter values ​​and / or the second parameter values ​​and the period of the minimum scheduling time unit includes: For each of the first parameter values, according to the corresponding relationship between the parameter value and the control signal, determine the first control signal corresponding to the corresponding first parameter value to obtain multiple first control signals; based on the multiple first control signals and the period of the minimum scheduling time unit, generate a power supply control signal; and / or, For each second parameter value in each second parameter value, determine the second control signal corresponding to the corresponding second parameter value according to the corresponding relationship between the parameter value and the control signal, and obtain multiple second control signals; based on the multiple second control signals and the period of the minimum scheduling time unit, generate a power supply control signal.

7. The method according to claim 5 or 6, characterized in that: The step of controlling the power supply voltage of the power amplifier by using the power supply control signal comprises: Controlling the power supply control signal and the wireless frame signal to achieve time synchronization; The gate power supply voltage and the drain power supply voltage of the power amplifier are controlled by using a power supply control signal that is time synchronized with the wireless frame signal, so that the power amplifier generates the lowest power consumption when the multiple wireless frame signals are input.

8. The method according to claim 7, characterized in that The controlling the power supply control signal and the wireless frame signal to achieve time synchronization includes: Get frame synchronization signal; When the frame synchronization signal is used to determine that the start time of the power control signal is greater than the start time of the wireless frame signal, a first time difference between the start time of the wireless frame signal and the start time of the power control signal is calculated; the start time of the wireless frame signal represents the time when the wireless frame signal arrives at the input port of the power amplifier; The start time of the power supply control signal is adjusted by utilizing the first time difference, so as to control the power supply control signal and the wireless frame signal to achieve time synchronization.

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