CN109068379A - Control circuit, control method and the terminal of power amplifier - Google Patents
Control circuit, control method and the terminal of power amplifier Download PDFInfo
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- CN109068379A CN109068379A CN201811109076.2A CN201811109076A CN109068379A CN 109068379 A CN109068379 A CN 109068379A CN 201811109076 A CN201811109076 A CN 201811109076A CN 109068379 A CN109068379 A CN 109068379A
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- 230000005540 biological transmission Effects 0.000 claims description 73
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- 238000003199 nucleic acid amplification method Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 9
- 230000006870 function Effects 0.000 description 9
- 238000007405 data analysis Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
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- 239000002699 waste material Substances 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Computer Networks & Wireless Communication (AREA)
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Abstract
This application discloses a kind of control circuit of power amplifier and methods, belong to the communications field.The control circuit is in terminal, the control circuit to include: modem, power-supply control unit and the power amplifier；The modem is electrical connected with the power-supply control unit, and the power-supply control unit is electrical connected with the power amplifier, and the power-supply control unit and the power supply of the terminal are electrical connected；The application obtains the data indication information to be sent whether instruction terminal has data to send within subsequent each period by modem, when terminal is sent within some subsequent period without data, modem can indicate that power-supply control unit stops powering to power amplifier, the power amplifier of transmitter continuous drain when under transmitter is in idle condition is avoided, to reduce the power consumption of terminal.
Description
Technical field
This application involves the communications field, in particular to a kind of control circuit of power amplifier, control method and terminal.
Background technique
With the development of the communications field, data service of the terminal based on wireless communication standard transmission is more and more, leads to end
The power consumption at end greatly increases, and therefore, how to reduce power consumption of the terminal in wireless data transmission, becomes those skilled in the art urgently
Problem to be solved.
In the related art, when terminal carries out wireless data transmission, the envelope tracer technique that can be used adjusts transmitter
Power amplifier voltage.Specifically, terminal predicts in the following certain time according to terminal data to be sent
Envelope signal intensity size；In the case where envelope signal intensity larger (for example, envelope signal intensity is greater than 10dBm), according to
Envelope signal intensity size calculates the voltage of the power amplifier in following a period of time, and controls function on corresponding time point
Rate amplifier is in corresponding operating at voltages；In the shape of envelope signal intensity smaller (for example envelope signal intensity is less than 10dBm)
Under state, the operating voltage of power amplifier is maintained a lesser fixed value by terminal.
Based on the method that above-mentioned the relevant technologies use, terminal maintains lesser operating voltage in power amplifier side always,
The waste for still resulting in power consumption of terminal influences the reduction effect of terminal power.
Summary of the invention
In order to solve the problems, such as that the relevant technologies, the embodiment of the present application provide a kind of control circuit of power amplifier, control
Method and terminal processed.The technical solution is as follows:
In a first aspect, providing a kind of control circuit of power amplifier, the control circuit is used in terminal, the control
Circuit processed includes: modem, power-supply control unit and the power amplifier；
The modem is electrical connected with the power-supply control unit, and the power-supply control unit is put with the power
Big device is electrical connected, and the power-supply control unit and the power supply of the terminal are electrical connected；
The modem, for obtaining data indication information to be sent, the data indication information to be sent is used for
Indicate whether the terminal has data transmission within subsequent each period；
The modem, for receiving the power supply of the power supply in the power-supply control unit, and to the power
Amplifier power supply, and terminal in subsequent first time period without data send when, to the power-supply control unit send first
Indication signal；
The power-supply control unit, for when receiving first indication signal, stopping to the power amplifier
Power supply；
The modem is also used to after the power-supply control unit stops powering to the power amplifier, and
When the terminal has data transmission in subsequent second time period, the second indication signal is sent to the power-supply control unit；
The power-supply control unit, for when receiving second indication signal, starting to the power amplifier
Power supply.
Second aspect, provides a kind of control method of power amplifier, the method by the power amplifier control
Modem in circuit processed executes, and the control circuit further includes power-supply control unit and the power amplifier；Institute
It states modem to be electrical connected with the power-supply control unit, the power-supply control unit and the power amplifier electrical property phase
Even, and the power-supply control unit and the power supply of the terminal are electrical connected, and the power-supply control unit receives the power supply
Power supply；The described method includes:
Data indication information to be sent is obtained, the data indication information to be sent is used to indicate the terminal subsequent each
Whether data transmission is had in a period；
Receive the power supply of the power supply in the power-supply control unit, and powers to the power amplifier, and the end
When end is sent in subsequent first time period without data, the first indication signal is sent to the power-supply control unit；Described
One indication signal is used to indicate the power-supply control unit and stops powering to the power amplifier；
After the power-supply control unit stops powering to the power amplifier, and the terminal is in subsequent second time
When having data transmission in section, the second indication signal is sent to the power-supply control unit；Second indication signal is used to indicate
The power-supply control unit starts powers to the power amplifier.
The third aspect, provides a kind of terminal, and the terminal includes the control circuit of power amplifier as described above.
Technical solution bring beneficial effect provided by the embodiments of the present application includes at least:
The number to be sent whether instruction terminal there are data to send within subsequent each period is obtained by modem
According to instruction information, when terminal is sent within some subsequent period (i.e. second time period) without data, modem can
To indicate that power-supply control unit stops powering to power amplifier, the power amplifier of transmitter is avoided to be in the free time in transmitter
Continuous drain when under state, to reduce the power consumption of terminal.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 be the invention relates to a kind of terminal transmission data system structure diagram；
Fig. 2 is a kind of control circuit structural representation for power amplifier that one exemplary embodiment of the application is related to；
Fig. 3 is a kind of control circuit structural representation for power amplifier that one exemplary embodiment of the application is related to；
Fig. 4 be the invention relates to a kind of power amplifier voltage status diagram；
Fig. 5 is a kind of control circuit structural representation for power amplifier that one exemplary embodiment of the application is related to；
Fig. 6 be the invention relates to a kind of power amplifier control circuit structural representation；
Fig. 7 is a kind of control circuit structural representation for power amplifier that one exemplary embodiment of the application is related to；
Fig. 8 be the invention relates to a kind of power amplifier control circuit structural representation；
Fig. 9 is a kind of control method flow chart for power amplifier that one exemplary embodiment of the application is related to；
Figure 10 be the invention relates to a kind of signal pattern schematic diagram.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
In the terminal that scheme provided by the present application can be used for having wireless signal emission function, for example, the terminal can be with
It is the mobile terminals such as smart phone, tablet computer, E-book reader, alternatively, the terminal is also possible to smartwatch, Brilliant Eyes
The intelligence wearable device such as mirror or Intelligent bracelet.In order to make it easy to understand, first below to the invention relates to it is some
Noun and its application principle are simply introduced.
Modem: being the abbreviation of modulator and demodulator, is the transmitting terminal in terminal by modulating digital signal
Analog signal is converted to, and converts analog signals into a kind of device of digital signal again by demodulation in the receiving end of terminal.
Wherein, modulation is the analog signal that digital signal is converted into transmit on route；Demodulation is analog signal to be converted into digital letter
Number.In terminal, for modem in modulated signal, generalling use the signal modulation that will need to modulate is that I signal and Q believe
Number, wherein I signal refers to that the phase component of original signal, Q signal refer to the quadrature component of original signal.
Power amplifier: refer under the conditions of given distortion rate, maximum power output can be generated to drive a certain load (example
Such as loudspeaker) amplifier.In the terminal, power amplifier refers to that the radiofrequency signal sent for the transmitter to terminal carries out
Power amplification, so as to terminal antenna can by emission of radio frequency signals to it is remote enough apart from when, still can be by other terminals
Or reception machine testing and received radio-frequency power amplifier on base station.
Radio-frequency power amplifier: being the important component of various wireless transmitters.In the front stage circuits of transmitter, adjust
RF signal power very little caused by oscillating circuit processed is needed by a series of amplification, by buffer stage, intermediate amplification
Grade, final power amplifying stage etc., after obtaining enough radio-frequency powers, can just be fed on antenna and radiate.In order to obtain
Sufficiently large radio frequency power output, it is necessary to use radio-frequency power amplifier.The key technical indexes of radio-frequency power amplifier is defeated
Power and efficiency out.In addition to this, the harmonic component in output should also be small as far as possible, dry to avoid generating to other channels
It disturbs.Finally in the final stage of emitting stage, high frequency modulated wave signal is subjected to power amplification, to meet the requirement for sending power, then
Space is radiated it by antenna, guarantees that receiver stage within a certain area can receive satisfied signal level, and
The communication of adjacent channel is not interfered.It should be noted that the power amplifier referred in the subsequent each embodiment of the application refers both to
Radio-frequency power amplifier.
Envelop following technology (Envelop Tracking): it is a kind of technology for improving efficiency power amplifier, belongs to
Dynamic power supplies modulation technique.Envelop following technology carries out tracking amplification to signal envelope by envelope tracker, and is supplied to function
Rate amplifier power supply.In this way, power amplifier can be constantly in the operation of compression critical zone, so that it is in entire power
Average efficiency in range is able to ascend.Change the power amplifier voltage of radio frequency amplifier with signal envelope, to make radio frequency
The power amplification efficiency of amplifier is constantly in the case of high efficiency, and power consumption can be effectively reduced.Wherein, it is wrapped in envelop following technology
From the extraction of network signal can directly be calculated by baseband I, Q signal, formula can be expressed as
Orthogonal frequency division multiplexi (Orthogonal Frequency Division Modulation, OFDM): sometimes
Multifrequency modulation technique (Discrete Multitone Modulation, DMT) also known as is separated, is multi-carrier modulation (MCM
Multi-CarrierModulation one kind).Its cardinal principle is: the channel of original signal is divided into several orthogonal sub-channels,
High-speed data signal is converted into parallel low speed sub-data flow, is modulated to and is transmitted on each of the sub-channels.Orthogonal signalling
Interfering with each other between subchannel can be reduced in this way by separating in receiving end using the relevant technologies
(Intersymbol Interference, ISI).Signal bandwidth on every sub-channels is less than the correlation bandwidth of channel, therefore
Flatness decline can be regarded as on every sub-channels, so as to eliminate intersymbol interference.And due to every sub-channels
Bandwidth is only the sub-fraction of former channel width, and channel equalization becomes relatively easy.
Finite state machine (Finite State Machine, FSM): being the hardware being made of register group and combinational logic
Sequence circuit.The state (the limited state being made of the 1 of register group and 0 assembled state) of finite state machine is only
It can could be from state shift another state in the case where same clock edge transition.
Referring to FIG. 1, it illustrates the invention relates to a kind of terminal transmission data system structure diagram,
As shown in Figure 1, first terminal 110 is wherein contained, and base station 120, second terminal 130.
First terminal 110 is can to transmit data to second terminal 130 by base station 120 or receive second terminal 130 to pass
The terminal device of transmission of data function, for example, first terminal can be mobile phone, tablet computer, intelligent robot etc..
Base station 120 is used to receive the data of the transmission of first terminal 110, and sends the data to second terminal 130.When
So, base station 120 also can receive the data of the transmission of second terminal 130, send the data to first terminal 110.
Second terminal 130 is also that can transmit data to first terminal 110 by base station 120 or receive first terminal 110
The terminal device for transmitting data function, for example, second terminal can be mobile phone, tablet computer, intelligent robot etc..
Referring to FIG. 2, a kind of control circuit for the power amplifier being related to it illustrates one exemplary embodiment of the application
Structural schematic diagram.The control circuit is used in terminal, for example, the terminal can be the first terminal in above-mentioned system shown in Figure 1
Or second terminal.As shown in Fig. 2, the control circuit 21 and power supply 22 are contained in figure in terminal 20, the control circuit 21 packet
It includes: modem 210, power-supply control unit 211 and power amplifier 212；
The modem 210 is electrical connected with power-supply control unit 211, power-supply control unit 211 and power amplifier
212 are electrical connected, and power-supply control unit 211 and the power supply 22 of terminal are electrical connected；
Wherein, the power supply in terminal is powered to power-supply control unit, and power-supply control unit is powered to power amplifier, and
And it is also controlled to the voltage swing that power amplifier is powered by power-supply control unit.For example, above-mentioned power-supply control unit to
The voltage of power amplifier power supply can be a fixed value, alternatively, what above-mentioned power-supply control unit was powered to power amplifier
Voltage can change with the variation of the envelope size of the data of terminal transmission.
Wherein, the modem 210, for obtaining data indication information to be sent, the data indication information to be sent
It is used to indicate whether terminal has data transmission within subsequent each period.
When having data to need to send in terminal, the data that modem sends needs are modulated, and will be after modulation
Data pass to the transceiver in terminal and sent.It is completed due to being modulated from data, sends to transceiver and lead between data
It is poor to be commonly present the regular hour, that is to say, that terminal when carrying out data modulation, modem it is available it is subsequent which when
Between have data transmission in section, which time upper no data is sent.
In the embodiment of the present application, above-mentioned data indication information to be sent can be the number that modem modulation obtains
In, the size of I datum and Q data to be sent within subsequent each period；When in some subsequent period will
When the I datum and Q data of transmission are all 0, it is believed that terminal does not have data transmission, the i.e. transmitter of terminal during this period of time
It will be in Idle state during this period of time；Conversely, when any in I datum to be sent in some subsequent period and Q data
Data are not 0, it may be considered that terminal has data transmission during this period of time.
In alternatively possible implementation, above-mentioned data indication information to be sent is also possible to when subsequent each
Between in section data to be sent envelope signal size.When the envelope of the data to be sent in some subsequent period is believed
Number size is 0, it may be considered that terminal does not have data transmission during this period of time, i.e. the transmitter of terminal during this period of time will
In Idle state；Conversely, can then recognize when the envelope signal size of data to be sent in some subsequent period is not 0
There is data transmission for terminal during this period of time.
The modem 210 is powered for receiving the power supply of power supply in power-supply control unit, and to power amplifier,
And terminal in subsequent first time period without data send when, to power-supply control unit send the first indication signal.
The power-supply control unit 211 is powered for stopping when receiving the first indication signal to power amplifier.
In the embodiment of the present application, modem can be with I number to be sent in monitor terminal subsequent each period
According to and Q data can be controlled to power supply when terminal I datum to be sent and Q data are all 0 in some subsequent period
Component sends signal, to indicate that power-supply control unit stops powering to power amplifier.
Alternatively, modem can also be with the envelope signal of data to be sent in monitor terminal subsequent each period
Size, when in some subsequent period terminal envelope signal size to be sent be 0, then can be sent to power-supply control unit
Signal, to indicate that power-supply control unit stops powering to power amplifier.
The modem 210 is also used to after power-supply control unit stops powering to power amplifier, and terminal is rear
When having data transmission in continuous second time period, the second indication signal is sent to power-supply control unit.
The power-supply control unit 211 is powered for when receiving the second indication signal, starting to power amplifier.
Modem instruction power-supply control unit stop to power amplifier power after, can also determine it is subsequent
Have in some period data send (terminal I datum to be sent and Q data are not all 0 in some i.e. subsequent period, or
Person when in some subsequent period 0) envelope signal of terminal data to be sent is not, can send out to power-supply control unit
The number of delivering letters is powered with indicating that power-supply control unit starts to power amplifier.
In one possible implementation, modem is detecting in subsequent first time period without data hair
It send, and when the duration of the first time period meets or exceeds a certain duration threshold value, the can be sent to power-supply control unit
One indication signal.
In the embodiment of the present application, it powers in order to avoid frequently stopping and starting to power amplifier, modem
When determining to send in subsequent first time period without data, it can be determined that whether first time period reaches preset duration threshold
Value can send the first indication signal to power-supply control unit when the duration of first time period reaches the duration threshold value.
Wherein, above-mentioned duration threshold value can be preset by developer, for example, the duration threshold value can be set to 1
The duration (being approximately equal to 66.7us) of OFDM symbol symbol.
In the embodiment of the present application, modem can be at the beginning of the first time period, to source control component
Send the second indication signal.
In the embodiment of the present application, modem is also connected with wireless set, can pass through the wireless set
Transmission data-signal is sent to power amplifier, transmitting antenna is also connected with after power amplifier, is used for the power amplification
The amplified signal of device launches equal elements and circuit.
Power-supply control unit 211 provided herein can be used to implement the power amplifier 212 that control is corresponded to it
Opening and closing, in the transmission data procedures of terminal, when the transmitter of terminal be in small-power output state (such as: function
When rate is less than 10dBm) or idle state, which can stop powering to the power amplifier 212, thus
The case where having reached reduction terminal intermediate power amplifier waste electricity.
In conclusion obtaining whether instruction terminal has data to send within subsequent each period by modem
Data indication information to be sent, when terminal is sent within some subsequent period (i.e. second time period) without data, modulation
Demodulator can indicate that power-supply control unit stops powering to power amplifier, avoid the power amplifier of transmitter in transmitter
Continuous drain when under being in idle condition, to reduce the power consumption of terminal.
It, in one possible implementation, can be in the control circuit based on the control circuit in embodiment illustrated in fig. 2
It is middle that dedicated control unit is set to control stopping and start the power supply to power amplifier, alternatively, can also pass through related skill
Existing device controls stopping and starts power supply to power amplifier in art.
It controls stopping when dedicated control unit is arranged in the control circuit and starts power supply to power amplifier
When, referring to FIG. 3, a kind of controling circuit structure for the power amplifier being related to it illustrates one exemplary embodiment of the application is shown
It is intended to.As shown in figure 3, the control circuit is in terminal 30, which to include: modem 310, power supply control group
Part 311 and power amplifier 312；
The power-supply control unit 311 includes: switch control unit 311a, power management integrated circuit (Power
Management integrated circuit, PMIC) 311b and envelope tracker (Envelop tracker, ET) 311c；
Above-mentioned modem 310 is electrical connected with the switch control unit 311, the switch control unit 311 with it is above-mentioned
PMIC 311b is electrical connected, which is electrical connected with the power supply 313 of above-mentioned terminal and above-mentioned ET 311c respectively；
The ET 311c is electrical connected with above-mentioned power amplifier；
Wherein, the modem, for obtaining data indication information to be sent, which is used for
Whether instruction terminal has data transmission within subsequent each period.
The modem is powered for receiving the power supply of power supply in power-supply control unit, and to power amplifier, and eventually
When end is sent in subsequent first time period without data, the first indication signal is sent to power-supply control unit.
The power-supply control unit is powered for stopping when receiving the first indication signal to power amplifier.
The modem is also used to after power-supply control unit stops powering to power amplifier, and terminal is subsequent
When having data transmission in second time period, the second indication signal is sent to power-supply control unit；
The power-supply control unit is powered for when receiving the second indication signal, starting to power amplifier.
When sending the first indication signal to the power-supply control unit, which is specifically used for the modem
Receive the power supply of the power supply in the power-supply control unit, and powers to the power amplifier, and terminal is in subsequent first time period
When the interior transmission without data, which sends above-mentioned first indication signal to the switch control unit；
Switch control unit 311a, for when receiving first indication signal, control the PMIC 311b stop to
ET 311c power supply；
The modem 310 is when sending the second indication signal to the power-supply control unit 311, the modem
310 in the power-supply control unit 311 for stopping after the power supply of the power amplifier 312, and the terminal 30 is at subsequent second
Between when having data transmission in section, which sends second indication signal to switch control unit 311a；
Switch control unit 311a, for when receiving second indication signal, control the PMIC 311b start to
ET 311c power supply.
In the embodiment of the present application, the power supply power supply of the receiving terminal PMIC, while powering to ET, for example, with fixed electricity
It presses to ET power supply to power while ET receives PMIC power supply to power amplifier, for example, the packet of the data sent according to terminal
Network signal magnitude determines the voltage powered to power amplifier, and powers according to determining voltage to power amplifier.Work as modulation
When demodulator sends the first indication signal to switch control unit, switch control unit controls PMIC, so that PMIC
Stop powering to ET, at this point, ET can not obtain the power supply of PMIC, would not also power again to power amplifier.Correspondingly, when adjusting
When modulator-demodulator sends the second indication signal to switch control unit, switch control unit controls PMIC, so that
PMIC starts to power to ET, at this point, ET regains the power supply of PMIC, also will start and powers to power amplifier.
Specifically for example, the modem 310 has signal modulation unit, Data Computation Unit and data analysis single
Member.The signal modulation unit is modulated the signal that terminal 30 is sent is received, for example, the signal modulation unit is using just
The mode of amplitude modulation (Quadrature Amplitude Modulation, QAM) is handed over, I signal and Q signal, the signal are generated
Modulated I signal and Q signal are sent to Data Computation Unit and data analysis unit by modulation unit, wherein the data meter
Calculate the envelope size that unit calculates the signal.Optionally, which can send calculated envelope size
ET 311c is given, ET 311c is provided according to the envelope size and determines that ET 311c is supplied to the output voltage of power amplifier 312.
Above-mentioned data analysis unit analyzes obtained I signal and Q signal, obtains I signal and Q signal when each
Between section data information, the modem 310 according to these data choose whether send the first indication signal and second refer to
Show signal.For example, the data obtained according to data analysis unit, the value of I signal and Q signal in first time period is equal to
In the case where 0, that is, analyze the terminal 30 in subsequent first time period without data send when, the modem 310 choosing
It selects to above-mentioned switch control unit 311a and sends the first indication signal, switch control unit 311a receives the first indication signal
When, it responds to control above-mentioned PMIC 311b and stopping powering to the ET 311c；I signal and Q letter in above-mentioned second time period
Number value not equal in the case where 0, that is, when analyze the terminal 30 has data transmission in subsequent second time period, opened to above-mentioned
It closes control unit 311a and sends the second indication signal, when switch control unit 311a receives the second indication signal, respond and be
Above-mentioned PMIC 311b is controlled to start to ET 311c power supply.
Further, in control, the PMIC 311b stops being somebody's turn to do to when the ET 311c power supply switch control unit 311a
Switch control unit 311a, specifically for sending first to the PMIC 311b and closing letter when receiving first indication signal
Number, first shutdown signal is for triggering PMIC 311b closing；
Start controlling the PMIC 311b to when ET 311c power supply, switch control unit 311a is specifically used for
When receiving second indication signal, the first open signal is sent to the PMIC 311b, first open signal is for triggering this
PMIC 311b is opened.
In the embodiment of the present application, when control PMIC stops powering to ET, switch control unit can be directly controlled
PMIC is closed, at this point, PMIC is to actively close, ET and power amplifier are passively closed because cannot get electric energy input, that is, is existed
In the embodiment of the present application, when stopping powering to power amplifier, not only power amplifier is without power consumption, and PMIC and ET are also
It is in close state, to further improve the effect for saving electric energy.
Optionally, when above-mentioned modem 310 sends second indication signal to switch control unit 311a, the tune
Modulator-demodulator 310 is specifically used for before the second time period, and at the beginning of the second time period between duration
At the time of for the first preset duration, second indication signal is sent to switch control unit 311a；
Wherein, which is to the power amplifier 312 to reach pre- according to from sending second indication signal
What if the prediction duration between voltage was arranged.
Specifically, when the operating voltage of terminal intermediate power amplifier 312 is fixed, i.e., in the case where there is data output,
The power amplifier 312 works in rated operational voltage, at this point, first preset duration can be by developer by a series of
Experiment obtains from modem 310 and sends second indication signal, until the operating voltage of the power amplifier 312 reaches this
Prediction duration between rated operational voltage, thus and determined according to the prediction duration, for example, the prediction duration is determined as
First preset duration, and the prediction duration is set in modem in advance.
In the mode of alternatively possible realization, the operating voltage of 30 intermediate power amplifier 312 of terminal makes according to above-mentioned
The envelope size variation of calculating, at this point it is possible to by the way that prediction rule is arranged in modem 310 in advance, it is pre- according to this
Gauge then determines voltage required for above-mentioned second time period initial time, then determines to send from modem 310 and be somebody's turn to do
The operating voltage of second indication signal to the power amplifier 312 reach voltage required for the second time period initial time it
Between prediction duration, and determined according to the prediction duration, for example, the prediction duration is determined as the first preset duration.
It is specific for example, referring to FIG. 4, it illustrates the invention relates to a kind of power amplifier voltage state show
It is intended to.As shown in figure 4, the first preset duration is wherein contained, first time period, second time period and each period power
The voltage of amplifier.Fig. 4 is that developer is provided with the first preset duration in advance in control circuit, detects the control circuit work
When making, the schematic diagram of power amplifier operating voltage variation.From figure it is not difficult to find out that, when terminal no data is sent corresponding the
One start time period, the voltage of power amplifier are begun to decline, until be 0, the second time when terminal has data transmission
Section start before the first preset duration at the time of, the voltage of the power amplifier is begun to ramp up, until reach satisfaction transmission number
According to desired voltage.
Optionally, the switch control unit 311a of above-described embodiment is finite state machine FSM.
In conclusion the embodiment of the present application by modem obtain instruction terminal within subsequent each period whether
Have data send data indication information to be sent, when terminal within some subsequent period (i.e. second time period) without data
When transmission, modem can indicate that the switch control unit in power-supply control unit sends the first shutdown signal to PMIC,
Make PMIC stop powering to ET, powers to stop ET to power amplifier, avoid the power amplifier of transmitter in transmitter
Continuous drain when under being in idle condition, to reduce the power consumption of terminal.
It controls stopping when dedicated control unit is arranged in the control circuit and starts power supply to power amplifier
When, referring to FIG. 5, a kind of controling circuit structure for the power amplifier being related to it illustrates one exemplary embodiment of the application is shown
It is intended to.As shown in figure 5, the control circuit is in terminal 50, which to include: modem 510, power supply control group
Part 511 and power amplifier 512；
The power-supply control unit 511 includes: switch control unit 511a, power management integrated circuit PMIC511b and envelope
Tracker ET 511c；
Above-mentioned modem 510 is electrical connected with above-mentioned switch control unit 511a, switch control unit 511a with
Above-mentioned ET 511c is electrical connected, and above-mentioned PMIC 511b is electrical connected with the power supply of the terminal 513 and the ET 511c respectively；
The ET 511c is electrical connected with above-mentioned power amplifier 512；
Wherein, the modem, for obtaining data indication information to be sent, which is used for
Whether instruction terminal has data transmission within subsequent each period.
The modem is powered for receiving the power supply of power supply in power-supply control unit, and to power amplifier, and eventually
When end is sent in subsequent first time period without data, the first indication signal is sent to power-supply control unit.
The power-supply control unit is powered for stopping when receiving the first indication signal to power amplifier.
The modem is also used to after power-supply control unit stops powering to power amplifier, and terminal is subsequent
When having data transmission in second time period, the second indication signal is sent to power-supply control unit；
The power-supply control unit is powered for when receiving the second indication signal, starting to power amplifier.
The modem 510 is when sending the first indication signal to the power-supply control unit 511, the modem
510 for receiving the power supply of the power supply in the power-supply control unit 511, and powers to the power amplifier 512, and terminal is rear
When sending in continuous first time period without data, first indication signal is sent to switch control unit 511a；
Switch control unit 511a stops for when receiving first indication signal, controlling the ET 511c to this
Power amplifier 512 is powered；
The modem 510 is when sending the second indication signal to the power-supply control unit 511, the modem
510, for stopping after the power supply of the power amplifier 512 in the power-supply control unit 511, and the terminal is in subsequent second time
When having data transmission in section, second indication signal is sent to switch control unit 511a；
Switch control unit 511a starts for when receiving second indication signal, controlling the ET 511c to this
Power amplifier 512 is powered.
Wherein, the working principle of the modem 510 is similar in above-described embodiment, and details are not described herein again.And
When switch control unit 511a in the control circuit receives the first indication signal and the second indication signal, corresponding response knot
Fruit is different, is characterized in particular in, and when switch control unit 511a receives the first indication signal, responds to control above-mentioned ET
511c stops powering to the power amplifier 512；When switch control unit 511a receives the second indication signal, respond as control
Above-mentioned ET 511c is made to start to the power supply of the power amplifier 512.
Optionally, switch control unit 511a control the ET 511c stop to the power amplifier 512 power when,
Switch control unit 511a is specifically used for when receiving first indication signal, sends second to the ET511c and closes letter
Number, second shutdown signal is for triggering ET 511c closing；
Start controlling the ET 511c to when the power supply of the power amplifier 512, switch control unit 511a is specific to use
In when receiving second indication signal, the second open signal is sent to the ET 511c, second open signal is for triggering
The ET 511c is opened.
Specifically, the modem 510 is also electrical connected with the ET 511c, adjusted in the above-described embodiments for receiving
The envelope size that the Data Computation Unit of modulator-demodulator 510 is sent, the ET 511c are calculated according to the envelope size by default
Rule calculates the voltage for needing to provide to the power amplifier 512.For example, including output voltage control list in ET 511c
Member, developer or operation maintenance personnel preset in the output voltage control unit output voltage computation rule (such as: U
=a2- c*E, wherein U represents output voltage, and E represents envelope size, and a, c are constant parameter), it is received in ET 511C above-mentioned
After the envelope size that Data Computation Unit is sent, output voltage can be calculated according to above-mentioned formula, be put to control the power
The operating voltage of big device 512.
In the embodiment of the present application, when control ET stops powering to power amplifier, switch control unit can be direct
It controls ET to close, at this point, ET is to actively close, power amplifier is passively closed because cannot get electric energy input, i.e., in this Shen
Please be in embodiment, when stopping powering to power amplifier, not only for power amplifier without power consumption, ET is also in closing shape
State, to further improve the effect for saving electric energy.
Optionally, when above-mentioned modem sends second indication signal to the switch control unit, the modulation /demodulation
Device is specifically used for before the second time period, and at the beginning of the second time period between when it is a length of second pre-
If at the time of duration, sending second indication signal to the switch control unit；
Wherein, which is that basis reaches default electricity from transmission second indication signal to the power amplifier
What the prediction duration between pressure was arranged.
Wherein, the method for determination of above-mentioned second preset duration and the first preset duration in above-mentioned embodiment illustrated in fig. 3
Method of determination is similar, and details are not described herein again.
Optionally, switch control unit 511a is also electrical connected with the processor 514 of the terminal 50；
Switch control unit 511a, for the unlatching when receiving the third open signal of the processor 514 transmission, and
The closing when receiving the third shutdown signal of the processor 514 transmission；
Wherein, which is that the processor 514 is detecting that 50 current network traffic of terminal is specified industry
The signal sent when business, the third shutdown signal are that the processor 514 is detecting that 50 current network traffic of terminal is non-finger
Determine the signal sent when business.
Specifically, referring to FIG. 6, it illustrates the invention relates to a kind of power amplifier control circuit knot
Structure schematic diagram.As shown in fig. 6, modem 510, power-supply control unit 511, power amplifier are contained in figure in terminal 50
512, power supply 513 and processor 514；
Switch control unit 511a, power management integrated circuit PMIC511b and packet are contained in power-supply control unit 511
Network tracker ET 511c；
In figure, which can detecte the business executed at present in the terminal 50, and whether judge the type of service
Specified services, if it is judged that be it is yes, then to switch control unit 511a send third open signal, the switch control
Unlatching when unit 511a receives the third open signal, in order to receive the first instruction letter of the modem 510 transmission
Number, complete subsequent control；If it is judged that be it is no, then the processor 514 to switch control unit 511a send third close
Signal is closed, closing when switch control unit 511a receives the third shutdown signal, switch control unit 511a stops work
Make.By taking specified services are voice-over-net call as an example, when the terminal 50 is when carrying out voice-over-net call, 514 meeting of processor
Third open signal is sent to switch control unit 511a, switch control unit 511a is made to start to work, is completed in network
In voice communication, control to power amplifier 512, to achieve the effect that save energy.
It should be noted that the optional side that switch control unit 511a and the processor 514 of the terminal 50 are electrical connected
Case, it can also be used in embodiment shown in Fig. 3, the control to switch control unit 311a, detailed process be completed by processor
As shown in this embodiment, details are not described herein again.
Wherein, above-mentioned processor can be the baseband processor in terminal, alternatively, above-mentioned processor can also be in terminal
Central processing unit.
Optionally, the switch control unit 511a of above-described embodiment is finite state machine FSM.
In conclusion the embodiment of the present application by modem obtain instruction terminal within subsequent each period whether
Have data send data indication information to be sent, when terminal within some subsequent period (i.e. second time period) without data
When transmission, modem can indicate that the switch control unit in power-supply control unit sends the second shutdown signal to ET, from
And ET is made to stop powering to power amplifier, avoid the power amplifier of transmitter from continuing when under transmitter is in idle condition
Power consumption, to reduce the power consumption of terminal.
When controlling the power supply of stopping and starting to power amplifier by existing device, referring to FIG. 7, it shows
A kind of control circuit structural representation for power amplifier that the application one exemplary embodiment is related to.As shown in fig. 7, the control
Circuit processed is in terminal 70, which to include: modem 710, power-supply control unit 711 and power amplifier
712；
The power-supply control unit 711 includes PMIC 711a and ET 711b；
The modem 710 is electrical connected with the power supply of the terminal 713 and the ET 711b respectively, the ET 711b with
The power amplifier 712 is electrical connected；
Wherein, the modem, for obtaining data indication information to be sent, which is used for
Whether instruction terminal has data transmission within subsequent each period.
The modem is powered for receiving the power supply of power supply in power-supply control unit, and to power amplifier, and eventually
When end is sent in subsequent first time period without data, the first indication signal is sent to power-supply control unit.
The power-supply control unit is powered for stopping when receiving the first indication signal to power amplifier.
The modem is also used to after power-supply control unit stops powering to power amplifier, and terminal is subsequent
When having data transmission in second time period, the second indication signal is sent to power-supply control unit；
The power-supply control unit is powered for when receiving the second indication signal, starting to power amplifier.
Wherein, PMIC 711a is also connected with the ET 711b, which is used to power to the ET 711b.
The modem 710 is when sending the first indication signal to the power-supply control unit 711, the modem
710 for receiving the power supply of the power supply in the power-supply control unit 711, and powers to the power amplifier 712, and terminal is rear
When sending in continuous first time period without data, first indication signal is sent to the ET 711b；
The ET 711b is used for when receiving first indication signal, stops powering to the power amplifier 712；
The modem 710 is when sending the second indication signal to the power-supply control unit 711, the modem
710 in the power-supply control unit 711 for stopping after the power supply of the power amplifier 712, and the terminal is in subsequent second time
When having data transmission in section, second indication signal is sent to the ET 711b；
The ET 711b is used for when receiving second indication signal, is started and is powered to the power amplifier 712.
Likewise, the working principle of the modem 710 is similar in above-described embodiment, details are not described herein again.And
It is directly to receive the first indication signal and second that the modem 710 is sent by the ET 711b to refer in the control circuit
Show signal, be characterized in particular in, when which receives the first indication signal, stops powering to the power amplifier 712；The ET
When 711b receives the second indication signal, responds and power for starting to the power amplifier 712.That is, in the application reality
Apply in example, ET in addition to can control to power amplifier power voltage swing other than, can also control stopping or start to
Power amplifier power supply.
Optionally, which is also electrical connected with the processor 714 of the terminal 70；
The modem 710, for opening to electricity when receiving the third open signal of the processor 714 transmission
The control circuit of source control component 711, and when receiving the third shutdown signal of the processor 714 transmission, it closes to power supply
The control circuit of control assembly 711；
Wherein, which is that the processor 714 is detecting that 70 current network traffic of terminal is specified industry
The signal sent when business, the third shutdown signal are that the processor 714 is detecting that 70 current network traffic of terminal is non-finger
Determine the signal sent when business.
Specifically, referring to FIG. 8, it illustrates the invention relates to a kind of power amplifier control circuit knot
Structure schematic diagram.As shown in figure 8, modem 710, power-supply control unit 711, power amplifier are contained in figure in terminal 70
712, power supply 713 and processor 714；
Power management integrated circuit PMIC 711a and envelope tracker ET711b are contained in power-supply control unit 711；
In figure, which can detecte the business executed at present in the terminal 70, and whether judge the type of service
Specified services, if it is judged that be it is yes, then to the modem 710 send third open signal, the modem
710 when receiving the third open signal, the control circuit to power-supply control unit 711 is opened, in order to the modem
710 send the first indication signal, complete subsequent control；If it is judged that be it is no, then the processor 72 is to the modem
710 send third shutdown signal, when which receives the third shutdown signal, close to power-supply control unit
711 control circuit, the modem 710 stop the process that signal is sent to power-supply control unit 711.It is with specified services
For voice-over-net call, when the terminal 70 is when carrying out voice-over-net call, which can be to the modem 710
Third open signal is sent, the modem 710 is made to start to send signal to power-supply control unit 711, is terminating network language
When sound is conversed, which can send third shutdown signal to the modem 710, stop the modem 710
Signal is sent to power-supply control unit 711, is controlled to be formed to power amplifier 712, achievees the effect that save energy.
It should be noted that the optinal plan that the modem 710 and the processor 714 of the terminal 70 are electrical connected,
It can also be used in Fig. 3 and embodiment shown in fig. 5, complete to switch control unit 311a and open by respective processor respectively
The control of control unit 511a is closed, detailed process is as shown in this embodiment, and details are not described herein again.
In conclusion the embodiment of the present application by modem obtain instruction terminal within subsequent each period whether
Have data send data indication information to be sent, when terminal within some subsequent period (i.e. second time period) without data
When transmission, modem can indicate that the ET in power-supply control unit stops powering to power amplifier, avoid transmitter
Power amplifier continuous drain when under transmitter is in idle condition, to reduce the power consumption of terminal.
The embodiment of the present application also provides a kind of terminal, the control comprising at least one power amplifier is electric in the terminal
Road.The control circuit can be the control circuit of any power amplifier in above-mentioned each embodiment.
Referring to FIG. 9, a kind of control method for the power amplifier being related to it illustrates one exemplary embodiment of the application
Flow chart, this method are executed by the modem in the control circuit of the power amplifier, which further includes power supply
Control assembly and the power amplifier；The modem is electrical connected with the power-supply control unit, the power-supply control unit
It is electrical connected with the power amplifier, and the power-supply control unit and the power supply of the terminal are electrical connected, the power-supply control unit
Receive the power supply of the power supply；This method comprises:
Step 901, data indication information to be sent is obtained.
Wherein, which is used to indicate whether the terminal has data hair within subsequent each period
It send.
Optionally, the modem according to transmitted in terminal come information, obtain baseband I/Q signal.Specifically, please join
Examine Figure 10, it illustrates the invention relates to a kind of signal pattern schematic diagram, as shown in Figure 10, wherein contain X-axis,
Y-axis, Z axis.X-axis represents the time, and unit is character (1 character=66.7us), and Y-axis represents frequency, and unit is hertz, and Z axis represents
Level, 0 represents low level, and 1 represents high level.
Information shown in Fig. 10 can be modulated by the modulation unit in modem, for example, the modulation unit is adopted
With the method for quadrature amplitude modulation (Quadrature Amplitude Modulation, QAM), I signal and Q signal are generated.It should
Modulated I signal and Q signal can be sent to Data Computation Unit and data analysis unit by signal modulation unit, wherein
The Data Computation Unit calculates the envelope size of the signal.
Above-mentioned data analysis unit analyzes obtained I signal and Q signal, obtains I signal and Q signal when each
Between section data information, which obtains above-mentioned number to be sent according to these data informations and corresponding period
According to instruction information.
Step 902, receive the power supply of the power supply in the power-supply control unit, and power to the power amplifier, and the end
When end is sent in subsequent first time period without data, the first indication signal is sent to the power-supply control unit.
Wherein, which is used to indicate the power-supply control unit and stops powering to the power amplifier.
Step 903, after the power-supply control unit stops powering to the power amplifier, and the terminal is at subsequent second
Between when having data transmission in section, send the second indication signal to the power-supply control unit.
Wherein, which is used to indicate the power-supply control unit and starts to power amplifier power supply.
Specifically, the modem chooses whether transmission first according to the data indication information to be sent of above-mentioned acquisition
Indication signal and the second indication signal.Such as: the data obtained according to data analysis unit, the I letter in first time period
Number and Q signal value be equal to 0 in the case where, that is, analyze the terminal in subsequent first time period without data send, should
Modem selects to send the first indication signal to above-mentioned power-supply control unit.I signal and Q in above-mentioned second time period
In the case that the value of signal is not equal to 0, that is, analyze the terminal has data transmission in subsequent second time period, to above-mentioned switch
Control unit sends the second indication signal.
In a kind of mode in the cards, which includes that power management integrated circuit PMIC and envelope chase after
Track device ET.
Optionally, which is electrical connected with the power supply of the terminal and the ET respectively, which puts with the power
Big device is electrical connected.
Optionally, receive the power supply of the power supply in the power-supply control unit, and power to the power amplifier, and terminal exists
When sending in subsequent first time period without data, which sends first indication signal to the ET；First finger
Show that signal is used to indicate the ET and stops powering to the power amplifier.
Specifically, triggering ET closing after the ET receives the first indication signal, and then stop supplying to the power amplifier
Electricity.
Optionally, after the power-supply control unit stops powering to the power amplifier, and the terminal is at subsequent second
Between when having data transmission in section, which sends second indication signal to the ET；Second indication signal is for referring to
Show that the ET starts to power to the power amplifier.
Specifically, triggering ET unlatching after the ET receives the second indication signal, and then start to supply to the power amplifier
Electricity.
In the mode of alternatively possible realization, which includes that switch control unit, power management are integrated
Circuit PMIC and envelope tracker ET.
Optionally, which is electrical connected with the switch control unit, the switch control unit and PMIC electricity
Property be connected, which is electrical connected with the power supply of the terminal and the ET respectively.
Optionally, receive the power supply of the power supply in the power-supply control unit, and power to the power amplifier, and the terminal
When sending in subsequent first time period without data, which sends first instruction to the switch control unit
Signal；First indication signal is specifically used for indicating that the switch control unit controls the PMIC and stops powering to the ET.
Optionally, after which receives the first indication signal, which sends to the PMIC
First shutdown signal when the PMIC receives first shutdown signal, triggers PMIC closing.
Specifically, the PMIC stops powering to the ET, and then ET is made to stop working when PMIC is closed, make the ET stop to
Power amplifier power supply, finally makes the power amplifier stop working.
Optionally, after the power-supply control unit stops powering to the power amplifier, and the terminal is at subsequent second
Between when having data transmission in section, which sends second indication signal to the switch control unit；Second finger
Show that signal is specifically used for indicating that the switch control unit controls the PMIC and starts to ET power supply.
Optionally, after which receives second indication signal, the switch control unit is to the PMIC
The first open signal is sent, after which receives first open signal, triggers PMIC unlatching.
Specifically, the PMIC starts to power to the ET when PMIC is opened, and then ET is made to start to work, by the ET to this
Power amplifier power supply.
Optionally, before the second time period, and at the beginning of the second time period between when a length of
At the time of one preset duration, which sends second indication signal to the switch control unit.
Wherein, which is that basis reaches default electricity from transmission second indication signal to the power amplifier
What the prediction duration between pressure was arranged.
In another mode in the cards, power-supply control unit includes finite state machine switch control unit, power supply
Manage integrated circuit PMIC and envelope tracker ET.
The modem is electrical connected with the switch control unit, which is electrical connected with the ET, should
PMIC is electrical connected with the power supply of the terminal and the ET respectively；The ET is electrical connected with the power amplifier.
Optionally, receive the power supply of the power supply in the power-supply control unit, and power to the power amplifier, and terminal exists
When sending in subsequent first time period without data, which executes to the switch control unit and sends first instruction
The step of signal；First indication signal be used to indicate the switch control unit control the ET stop to the power amplifier supply
Electricity.
Optionally, after which receives first indication signal, which sends to the ET
Second shutdown signal after the ET receives second shutdown signal, triggers ET closing.
Specifically, stopping powering to the power amplifier, and then close the power amplifier after the ET is closed.
Optionally, after the power-supply control unit stops powering to the power amplifier, and the terminal is at subsequent second
Between when having data transmission in section, which sends second indication signal to the switch control unit；Second instruction
Signal be used to indicate the switch control unit control the ET start to the power amplifier power.
Optionally, after which receives second indication signal, which sends to the ET
Second open signal after the ET receives second open signal, triggers ET unlatching.
Specifically, starting to power to the power amplifier, and then open the power amplifier after the ET is opened.
Optionally, the switch control unit and the processor of the terminal are electrical connected；This method further include:
The switch control unit receives the third open signal of processor transmission.
Specifically, switch control unit unlatching when receiving the third open signal of processor transmission.
The switch control unit receives the third shutdown signal of processor transmission.
Specifically, switch control unit closing when receiving the third shutdown signal of processor transmission.
Wherein, which is processor hair when detecting that the terminal current network traffic is specified services
The signal sent, the third shutdown signal are processor transmissions when detecting that the terminal current network traffic is non-specified services
Signal.
Specifically, the processor can detecte the business executed at present in the terminal, and judge the type of service whether be
Specified services, if it is judged that be it is yes, then send third open signal to the switch control unit, which connects
Unlatching when receiving the third open signal executes subsequent step in order to receive the first indication signal of modem transmission
Suddenly；If it is judged that be it is no, then the processor to the switch control unit send third shutdown signal, the switch control unit
Closing when receiving the third shutdown signal, the switch control unit stop working.By voice-over-net of specified services, call is
Example, when the terminal is when carrying out voice-over-net call, which can send third open signal to the switch control unit, make
The switch control unit is started to work, and is executed in voice-over-net call, to the rate-determining steps of power amplifier, to reach section
The about effect of energy.
Optionally, which is finite state machine FSM.
In conclusion the embodiment of the present application by modem obtain instruction terminal within subsequent each period whether
Have data send data indication information to be sent, when terminal within some subsequent period (i.e. second time period) without data
When transmission, modem can indicate that power-supply control unit stops powering to power amplifier, and the power of transmitter is avoided to put
Big device continuous drain when under transmitter is in idle condition, to reduce the power consumption of terminal.
It should be understood that control circuit provided by the above embodiment and method are executing unlatching power amplifier or pass
It, can be with only with the division progress of above-mentioned each circuit module or Elementary Function for example, in practical application when closing power amplifier
It is completed, i.e., is divided into the internal structure of equipment not by different functional modules or unit as needed and by above-mentioned function distribution
Same functional module or unit, to complete all or part of the functions described above.
The foregoing is merely the preferred embodiments of the application, not to limit the application, it is all in spirit herein and
Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this application.
Claims (18)
1. a kind of control circuit of power amplifier, which is characterized in that the control circuit is used in terminal, the control circuit
It include: modem, power-supply control unit and the power amplifier；
The modem is electrical connected with the power-supply control unit, the power-supply control unit and the power amplifier
It is electrical connected, and the power-supply control unit and the power supply of the terminal are electrical connected；
The modem, for obtaining data indication information to be sent, the data indication information to be sent is used to indicate
Whether the terminal has data transmission within subsequent each period；
The modem, for receiving the power supply of the power supply in the power-supply control unit, and to the power amplification
Device power supply, and terminal in subsequent first time period without data send when, to the power-supply control unit send first instruction
Signal；
The power-supply control unit is powered for stopping when receiving first indication signal to the power amplifier；
The modem is also used to after the power-supply control unit stops powering to the power amplifier, and described
When terminal has data transmission in subsequent second time period, the second indication signal is sent to the power-supply control unit；
The power-supply control unit is powered for when receiving second indication signal, starting to the power amplifier.
2. control circuit according to claim 1, which is characterized in that the power-supply control unit includes: switch control list
Member, power management integrated circuit PMIC and envelope tracker ET；
The modem is electrical connected with the switch control unit, the switch control unit and the PMIC electrical property phase
Even, the PMIC is electrical connected with the power supply of the terminal and the ET respectively；The ET and the power amplifier are electrical
It is connected；
When sending the first indication signal to the power-supply control unit, the modem is specifically used in the power supply
Control assembly receives the power supply of the power supply, and powers to the power amplifier, and terminal does not have in subsequent first time period
When having data transmission, first indication signal is sent to the switch control unit；
The switch control unit stops for when receiving first indication signal, controlling the PMIC to the ET
Power supply；
When sending the second indication signal to the power-supply control unit, the modem, for being controlled in the power supply
Component stops after powering to the power amplifier, and when the terminal has data transmission in subsequent second time period, to institute
It states switch control unit and sends second indication signal；
The switch control unit starts for when receiving second indication signal, controlling the PMIC to the ET
Power supply.
3. control circuit according to claim 2, which is characterized in that
When controlling the PMIC and stopping powering to the ET, the switch control unit, specifically for receiving described the
When one indication signal, the first shutdown signal is sent to the PMIC, first shutdown signal is closed for triggering the PMIC；
Control the PMIC start power to the ET when, the switch control unit, specifically for receiving described the
When two indication signals, the first open signal is sent to the PMIC, first open signal is opened for triggering the PMIC.
4. control circuit according to claim 2, which is characterized in that send described second to the switch control unit and refer to
When showing signal,
The modem is specifically used for before the second time period, and at the beginning of the second time period
Between quarter when a length of first preset duration at the time of, send second indication signal to the switch control unit；
Wherein, first preset duration is to reach default according to from transmission second indication signal to the power amplifier
What the prediction duration between voltage was arranged.
5. control circuit according to claim 1, which is characterized in that the power-supply control unit includes: switch control list
Member, PMIC and ET；
The modem is electrical connected with the switch control unit, the switch control unit and the ET electrical property phase
Even, the PMIC is electrical connected with the power supply of the terminal and the ET respectively；The ET and the power amplifier are electrical
It is connected；
When sending the first indication signal to the power-supply control unit, the modem, for being controlled in the power supply
Component receives the power supply of the power supply, and powers to the power amplifier, and terminal does not count in subsequent first time period
When according to sending, first indication signal is sent to the switch control unit；
The switch control unit stops for when receiving first indication signal, controlling the ET to the power
Amplifier power supply；
When sending the second indication signal to the power-supply control unit, the modem, for being controlled in the power supply
Component stops after powering to the power amplifier, and when the terminal has data transmission in subsequent second time period, to institute
It states switch control unit and sends second indication signal；
The switch control unit starts for when receiving second indication signal, controlling the ET to the power
Amplifier power supply.
6. control circuit according to claim 5, which is characterized in that
When the control ET stops powering to the power amplifier, the switch control unit, specifically for receiving
When first indication signal, the second shutdown signal is sent to the ET, second shutdown signal is closed for triggering the ET
It closes；
When the control ET starts and powers to the power amplifier, the switch control unit, specifically for receiving
When second indication signal, the second open signal is sent to the ET, second open signal is opened for triggering the ET
It opens.
7. according to any control circuit of the claim 2 to 6, which is characterized in that the switch control unit also with
The processor of the terminal is electrical connected；
The switch control unit for the unlatching when receiving the third open signal that the processor is sent, and is receiving
To the processor send third shutdown signal when close；
Wherein, the third open signal is the processor when detecting the terminal current network traffic is specified services
The signal of transmission, the third shutdown signal are that the processor is detecting that the terminal current network traffic is non-designated industry
The signal sent when business.
8. according to any control circuit of the claim 2 to 6, which is characterized in that the switch control unit is to have
Limit state machine FSM.
9. according to the control circuit described in claim 1, which is characterized in that the power-supply control unit include PMIC and
ET；
The modem is electrical connected with the power supply of the terminal and the ET respectively, the ET and the power amplification
Device is electrical connected；
When sending the first indication signal to the power-supply control unit, the modem, for being controlled in the power supply
Component receives the power supply of the power supply, and powers to the power amplifier, and terminal does not count in subsequent first time period
When according to sending, first indication signal is sent to the ET；
The ET powers for stopping when receiving first indication signal to the power amplifier；
When sending the second indication signal to the power-supply control unit, the modem, for being controlled in the power supply
Component stops after powering to the power amplifier, and when the terminal has data transmission in subsequent second time period, to institute
It states ET and sends second indication signal；
The ET powers for when receiving second indication signal, starting to the power amplifier.
10. a kind of control method of power amplifier, which is characterized in that the method by the power amplifier control circuit
In modem execute, the control circuit further includes power-supply control unit and the power amplifier；The modulation
Demodulator is electrical connected with the power-supply control unit, and the power-supply control unit is electrical connected with the power amplifier, and
The power-supply control unit and the power supply of the terminal are electrical connected, and the power-supply control unit receives the power supply of the power supply；
The described method includes:
Data indication information to be sent is obtained, the data indication information to be sent is used to indicate the terminal when subsequent each
Between whether have data transmission in section；
Receive the power supply of the power supply in the power-supply control unit, and powers to the power amplifier, and the terminal exists
When sending in subsequent first time period without data, the first indication signal is sent to the power-supply control unit；Described first refers to
Show that signal is used to indicate the power-supply control unit and stops powering to the power amplifier；
After the power-supply control unit stops powering to the power amplifier, and the terminal is in subsequent second time period
When having data transmission, the second indication signal is sent to the power-supply control unit；Second indication signal is used to indicate described
Power-supply control unit starts powers to the power amplifier.
11. according to the method described in claim 10, it is characterized in that, the power-supply control unit include switch control unit,
Power management integrated circuit PMIC and envelope tracker ET；
The modem is electrical connected with the switch control unit, the switch control unit and the PMIC electrical property phase
Even, the PMIC is electrical connected with the power supply of the terminal and the ET respectively；
It is described to send the first indication signal to the power-supply control unit, comprising:
Receive the power supply of the power supply in the power-supply control unit, and powers to the power amplifier, and the terminal exists
When sending in subsequent first time period without data, first indication signal is sent to the switch control unit；Described
One indication signal is specifically used for indicating that the switch control unit controls the PMIC and stops powering to the ET；
It is described to send the second indication signal to the power-supply control unit, comprising:
After the power-supply control unit stops powering to the power amplifier, and the terminal is in subsequent second time period
When having data transmission, second indication signal is sent to the switch control unit；Second indication signal is specifically used for
Indicate that the switch control unit controls the PMIC and starts to ET power supply.
12. according to the method for claim 11, which is characterized in that
First indication signal is specifically used for indicating that the switch control unit sends the first shutdown signal, institute to the PMIC
It states the first shutdown signal and is closed for triggering the PMIC；
Second indication signal is specifically used for indicating the switch control unit, sends the first open signal to the PMIC,
First open signal is opened for triggering the PMIC.
13. according to the method for claim 11, which is characterized in that described to send described second to the switch control unit
Indication signal, comprising:
Before the second time period, and at the beginning of the second time period between when it is a length of first it is default when
At the time of long, second indication signal is sent to the switch control unit；
Wherein, first preset duration is to reach default according to from transmission second indication signal to the power amplifier
What the prediction duration between voltage was arranged.
14. according to the method described in claim 10, it is characterized in that, the power-supply control unit includes finite state machine switch
Control unit, power management integrated circuit PMIC and envelope tracker ET；
The modem is electrical connected with the switch control unit, the switch control unit and the ET electrical property phase
Even, the PMIC is electrical connected with the power supply of the terminal and the ET respectively；The ET and the power amplifier are electrical
It is connected；
It is described to send the first indication signal to the power-supply control unit, comprising:
Receive the power supply of the power supply in the power-supply control unit, and powers to the power amplifier, and terminal is subsequent
When sending in first time period without data, first indication signal is sent to the switch control unit；Described first refers to
Show that signal is used to indicate the switch control unit control ET and stops powering to the power amplifier；
It is described to send the second indication signal to the power-supply control unit, comprising:
After the power-supply control unit stops powering to the power amplifier, and the terminal is in subsequent second time period
When having data transmission, second indication signal is sent to the switch control unit；Second indication signal is used to indicate
The switch control unit controls the ET and starts to power amplifier power supply.
15. according to the method for claim 14, which is characterized in that
First indication signal is specifically used for indicating that the switch control unit sends the second shutdown signal to the ET, described
Second shutdown signal is closed for triggering the ET；
Second indication signal is specifically used for indicating that the switch control unit sends the second open signal to the ET, described
Second open signal is opened for triggering the ET.
16. according to any method of the claim 11 to 15, which is characterized in that the switch control unit is limited
State machine FSM.
17. according to the method described in any one of claim 10, which is characterized in that the power-supply control unit includes power management collection
At circuit PMIC and envelope tracker ET；
The modem is electrical connected with the power supply of the terminal and the ET respectively, the ET and the power amplification
Device is electrical connected；
It is described to send the first indication signal to the power-supply control unit, comprising:
Receive the power supply of the power supply in the power-supply control unit, and powers to the power amplifier, and terminal is subsequent
When sending in first time period without data, first indication signal is sent to the ET；First indication signal is used for
Indicate that the ET stops powering to the power amplifier；
It is described to send the second indication signal to the power-supply control unit, comprising:
After the power-supply control unit stops powering to the power amplifier, and the terminal is in subsequent second time period
When having data transmission, second indication signal is sent to the ET；Second indication signal is used to indicate the ET starting
It powers to the power amplifier.
18. a kind of terminal, which is characterized in that the terminal includes the control of power amplifier as described in any one of claim 1 to 9
Circuit processed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811109076.2A CN109068379B (en) | 2018-09-21 | 2018-09-21 | Control circuit and control method of power amplifier and terminal |
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| CN201811109076.2A CN109068379B (en) | 2018-09-21 | 2018-09-21 | Control circuit and control method of power amplifier and terminal |
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| CN109068379B CN109068379B (en) | 2021-08-10 |
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| CN109068379B (en) | 2021-08-10 |
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