CN108616974B - Gain and power adjusting method and device - Google Patents
Gain and power adjusting method and device Download PDFInfo
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- CN108616974B CN108616974B CN201611129938.9A CN201611129938A CN108616974B CN 108616974 B CN108616974 B CN 108616974B CN 201611129938 A CN201611129938 A CN 201611129938A CN 108616974 B CN108616974 B CN 108616974B
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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
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
Abstract
The invention discloses a method and a device for adjusting gain and power. According to the method, after an output signal of a radio frequency front end function module is received, IRSSI and ORSSI of the radio frequency signal are determined according to the output signal, an adjusting strategy for adjusting gain and/or power of the radio frequency front end function module is determined according to one or more of the IRSSI, ORSSI and the output signal, and the radio frequency front end function module is controlled according to the determined adjusting strategy. By the method, the gain and the power of the radio frequency front-end functional module are automatically adjusted to meet the requirements of different scenes.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a method and an apparatus for adjusting gain and power.
Background
In a receiver for wireless communication, such as a bluetooth headset, a signal is generally received through a radio frequency front end function module.
The rf front-end module generally includes a Low Noise Amplifier (LNA), a Mixer (Mixer), a Variable Gain Amplifier (VGA), a Low Pass Filter (LPF), an Analog Digital Converter (ADC), and the like, and is configured to amplify, convert, and Filter a received wireless signal, so that parameters such as frequency, amplitude, and signal-to-noise ratio of the signal meet requirements of subsequent processing. Therefore, the performance of the rf front-end functional module is a key indicator of the receiver.
Because the strength and quality of the signal received by the rf front-end module may vary due to various factors, an Automatic Gain Control (AGC) device is usually configured to adjust the Gain of the rf front-end module correspondingly with the variation of the received signal, so as to maintain the strength of the signal output by the rf front-end module within a preset range, and further enable the subsequent signal processing to be performed normally.
In the prior art, the gain of the radio frequency front end functional module can be automatically adjusted, but the power of the radio frequency front end functional module cannot be adjusted, so that the requirements under different conditions cannot be met.
Disclosure of Invention
The invention provides a method and a device for adjusting gain and power, which are used for automatically adjusting the gain and the power of a radio frequency front-end functional module.
The method for adjusting the gain and the power provided by the embodiment of the invention comprises the following steps:
receiving an output signal of a radio frequency front end functional module;
determining an in-band received signal strength indication IRSSI and an out-of-band received signal strength indication ORSSI of the radio frequency signal according to the output signal;
determining an adjustment strategy for adjusting the gain and/or power of the RF front-end function module according to one or more of the IRSSI, the ORSSI and the output signal;
and controlling the radio frequency front end function module according to the adjusting strategy.
Optionally, the determining a regulation strategy for regulating the power of the rf front-end function module according to one or more of the IRSSI, the ORSSI and the output signal includes:
if one of the preset conditions is met, determining an adjustment strategy for adjusting the power of the radio frequency front end function module to be the power reduction of the radio frequency front end function module;
the preset conditions include:
the value of the IRSSI is not in a preset range;
the value of the ORSSI is not in a preset range;
and determining that the component in the radio frequency front-end function module cannot normally work due to the fact that the input signal of the component is not in a preset range according to the output signal, and calculating and judging that the input signal of the component cannot be in the preset range through gain adjustment.
Optionally, determining an adjustment strategy for adjusting a gain of the rf front-end function module according to the IRSSI, the ORSSI and the output signal includes:
if the preset conditions are not met, determining an adjusting strategy for adjusting the gain of the radio frequency front end function module according to one or more of the IRSSI, the ORSSI and the output signal;
the preset conditions include:
the value of the IRSSI is not in a preset range;
the value of the ORSSI is not in a preset range;
and determining that the component in the radio frequency front-end function module cannot normally work due to the fact that the input signal of the component is not in a preset range according to the output signal, and calculating and judging that the input signal of the component cannot be in the preset range through gain adjustment.
Optionally, after controlling the rf front-end function module according to an adjustment strategy for reducing the power of the rf front-end function module, the method further includes:
when the IRSSI, the ORSSI and the output signal are judged to be not satisfied with the preset condition, determining an adjusting strategy for adjusting the gain of the radio frequency front end function module according to one or more of the IRSSI, the ORSSI and the output signal, and determining the adjusting strategy for adjusting the power of the radio frequency front end function module to increase the power of the radio frequency front end function module.
Optionally, an adjustment policy corresponds to a set of parameter settings, where a set of parameter settings includes parameter settings of one or more components in the rf front-end function module, and each set of parameter settings is identified using a unique index value;
the controlling the radio frequency front end function module according to the adjustment strategy comprises:
and sending the index value of a group of parameter settings corresponding to the adjustment strategy to one or more components in the radio frequency front-end function module, so that the one or more components can adjust according to the parameter settings corresponding to the index value.
The gain and power adjusting device provided by the embodiment of the invention comprises:
the receiving module is used for receiving the output signal of the radio frequency front end functional module;
the first determining module is used for determining an in-band received signal strength indicator IRSSI and an out-of-band received signal strength indicator ORSSI of the radio-frequency signal according to the output signal;
a second determining module, configured to determine an adjustment strategy for adjusting the gain and/or power of the rf front-end function module according to one or more of the IRSSI, the ORSSI, and the output signal;
and the control module is used for controlling the radio frequency front end function module according to the adjusting strategy.
Optionally, the second determining module is specifically configured to:
if one of the preset conditions is met, determining an adjustment strategy for adjusting the power of the radio frequency front end function module to be the power reduction of the radio frequency front end function module;
the preset conditions include:
the value of the IRSSI is not in a preset range;
the value of the ORSSI is not in a preset range;
and determining that the component in the radio frequency front-end function module cannot normally work due to the fact that the input signal of the component is not in a preset range according to the output signal, and calculating and judging that the input signal of the component cannot be in the preset range through gain adjustment.
Optionally, the second determining module is specifically configured to:
if the preset conditions are not met, determining an adjusting strategy for adjusting the gain of the radio frequency front end function module according to one or more of the IRSSI, the ORSSI and the output signal;
the preset conditions include:
the value of the IRSSI is not in a preset range;
the value of the ORSSI is not in a preset range;
and determining that the component in the radio frequency front-end function module cannot normally work due to the fact that the input signal of the component is not in a preset range according to the output signal, and calculating and judging that the input signal of the component cannot be in the preset range through gain adjustment.
Optionally, after the control module controls the rf front-end function module according to an adjustment strategy for reducing the power of the rf front-end function module, the second determining module is further configured to:
when the preset conditions are judged to be not met according to the IRSSI, the ORSSI and the output signals, determining an adjusting strategy for adjusting the gain of the radio frequency front end function module according to one or more of the IRSSI, the ORSSI and the output signals, and determining the adjusting strategy for adjusting the power of the radio frequency front end function module to increase the power of the radio frequency front end function module.
Optionally, an adjustment policy corresponds to a set of parameter settings, where a set of parameter settings includes parameter settings of one or more components in the rf front-end function module, and each set of parameter settings is identified using a unique index value;
the control module is specifically configured to: and sending the index value of a group of parameter settings corresponding to the adjustment strategy to one or more components in the radio frequency front-end function module, so that the one or more components can adjust according to the parameter settings corresponding to the index value.
In the above embodiment of the present invention, the IRSSI and the ORSSI may be determined according to the output signal of the radio frequency front end function module, then the adjustment strategy for adjusting the gain and/or the power of the radio frequency front end function module is determined according to one or more of the IRSSI, the ORSSI and the output signal, and the radio frequency front end function module is controlled according to the determined strategy, so as to automatically adjust the gain and the power of the radio frequency front end function module, so as to meet the requirements in different scenes.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic block diagram of a receiver suitable for use in the gain and power adjustment methods provided by the practice of the present invention;
FIG. 2 is a flow chart of a method for adjusting gain and power according to an embodiment of the present invention;
FIG. 3 is a timing diagram illustrating the gain and power adjustment method provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an automatic gain control apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a method for adjusting gain and power, which is used for automatically adjusting the gain and the power of a radio frequency front-end functional module.
To facilitate explanation of the gain and power adjustment methods provided in the embodiments of the present invention, an embodiment of the present invention provides a radio frequency front end functional module that can be applied to a receiver in the embodiments of the present invention, as shown in fig. 1.
As shown in the figure, the received radio frequency signal sequentially passes through each component in the radio frequency front end functional module, and the components in the radio frequency front end functional module include: a low noise amplifier 101, a Mixer (Mixer)102, a variable gain amplifier 103, a low pass filter 104, and an analog-to-digital converter 105. The output of each component is connected to a gain and power adjustment device 106, and the gain and power adjustment device 106 may output feedback information for each component.
The low Noise amplifier 101 is mainly used for amplifying a radio frequency Signal received by an antenna end to a certain extent, and simultaneously minimizing deterioration of a Signal to Noise Ratio (SNR).
The mixer 102 is configured to down-convert the radio frequency signal after passing through the low noise amplifier 101 to a lower intermediate frequency band, so as to facilitate filtering out-of-band noise, sampling by an analog-to-digital converter, and digital signal processing at the back end.
The variable gain amplifier 103 and the low pass filter 104 are mainly used for further amplifying and filtering the intermediate frequency signal, retaining the in-band useful signal, and filtering out the out-of-band clutter component.
The analog-to-digital converter 105 is configured to convert an analog signal at a front end into a digital signal at a certain sampling rate, and then process, demodulate, etc. the signal in a digital signal domain.
The gain and power adjusting device 106 may be configured to implement the gain and power adjusting method provided in the embodiment of the present invention, and determine an adjustment strategy for the gain and power of the rf front-end function module according to the output signal of the rf front-end function module, and feed the determined adjustment strategy for the gain and power back to each component in the rf front-end function module, so that the rf front-end function module automatically adjusts the gain and power of the rf front-end function module under different conditions, such as greater or smaller intensity of the received rf signal, and no interference.
It should be understood that the block diagram shown in fig. 1 is only a specific embodiment provided by the present invention, and the radio frequency front end functional module applicable to the embodiment of the present invention may be composed of all or part of the components shown in fig. 1, and may further include components not shown in fig. 1, which is not limited by the present invention.
Optionally, the gain and power adjusting device 106 may preset therein a gain and power adjusting policy of the rf front-end function module, where one adjusting policy corresponds to a set of parameter settings, and a set of parameter settings may include parameter settings of one or more components in the rf front-end function module, and each set of parameter settings is identified by using a unique index value. The gain and power adjustment means may determine an adjustment strategy for adjusting the gain and power of the rf front-end function block based on the received rf signal strength, quality, etc.
In one adjustment strategy, parameter settings of all components may be included, or parameter settings of only some components may be included, and according to different application scenarios, different adjustment strategies may include parameter settings of different components.
Referring to fig. 2, a flow chart of an automatic gain control method according to an embodiment of the present invention is schematically shown, and as shown in the drawing, the method includes the following steps:
Taking the rf front-end architecture shown in fig. 1 as an example, the output signals of the low noise amplifier 101, the mixer 102, the variable gain amplifier 103, the low pass filter 104 and the analog-to-digital converter 105 in the rf front-end functional module are all input into the gain and power adjusting device 106. The gain and power adjusting device 106 automatically adjusts the gain and power of the rf front-end functional module according to the output signals of these components.
Specifically, taking the rf front-end architecture shown in fig. 1 as an example, the gain and power adjusting device 106 needs to determine the gain and power adjusting strategy of the rf front-end functional module according to IRSSI and ORSSI of the received rf signal, where the rf signal may be an rf signal received by an antenna. However, the gain and power adjusting device 106 does not generally receive the rf signal directly, but may calculate IRSSI and ORSSI of the rf signal received by the rf front-end function module according to the received output signal of one or more components in the rf front-end function module and the obtained gain of the component. For example, the gain and power adjusting device 106 may calculate IRSSI and ORSSI of the rf signal according to the output signal of the low noise amplifier 101 and the gain of the low noise amplifier 101.
Step 203, determining an adjustment strategy for adjusting the gain and/or power of the rf front-end function module according to one or more of IRSSI, ORSSI and the output signal of the rf front-end function module.
Optionally, when determining the adjustment strategy, it may first determine whether the following conditions are satisfied according to one or more of IRSSI, ORSSI, and an output signal of the rf front-end function module, and if one of the following conditions is satisfied, only the power of the rf front-end function module may be adjusted without considering the gain.
The above conditions include:
1. the value of IRSSI is not in the preset range
Generally, the IRSSI of the rf signal received by the rf functional module has a certain fluctuation range, for example, from-95 dBm to 10dBm, i.e., the IRSSI falls in the range from-95 dBm to 10dBm in most cases. In order to enable the signal output by the rf front-end functional module to be within a preset range, that is, a range in which subsequent signal processing work can be normally performed, the gain of the rf front-end functional module can be adjusted by adjusting parameters of components in the rf front-end functional module, so that the strength of the output signal can be within the preset range regardless of the strength of the received rf signal.
However, due to the limitation of the hardware configuration of the rf front-end functional module, the adjustment range of the gain is limited, that is, when the strength of the received rf signal is too large or too small, the gain of the rf front-end functional module cannot be adjusted in any way, and the output signal thereof cannot be within the range that enables the subsequent signal processing operation to be performed normally. In this case, the gain of the rf front-end function may not be considered, and only the power of the rf front-end function may be considered to be reduced.
Therefore, the radio frequency front end function module can be analyzed, calculated or tested in advance, and when the IRSSI of the received radio frequency signal is in what range, a signal which can enable the subsequent signal processing to work normally can be output through gain adjustment. Typically, this range is slightly larger than the fluctuation range of IRSSI.
2. The value of ORSSI is not in the preset range
Similarly, based on the above reasons, the rf front-end function module may be analyzed, calculated or tested in advance, and when determining in which range the received rf signal ORSSI is located, a signal that enables the subsequent signal processing to be performed normally may be output through gain adjustment. When the gain of the rf front-end function module is adjusted, and the output signal thereof cannot be within a range that enables the subsequent signal processing operation to be performed normally, the gain of the rf front-end function module may not be considered, and only the power of the rf front-end function module may be considered to be reduced.
3. The output signal of the radio frequency front-end function module determines that a component in the radio frequency front-end function module cannot normally work due to the fact that the input signal of the component is not in a preset range, and the input signal of the component cannot be in the preset range through gain adjustment after calculation and judgment.
Taking the adc 105 in fig. 1 as an example, when the intensity of the input signal of the adc 105 exceeds the range in which the mode converter 105 can operate normally, the adc 105 outputs an overflow signal.
The gain and power adjusting device 106 can calculate whether it is possible to adjust the gain of the previous component of the analog-to-digital converter 105 after receiving the overflow signal output by the analog-to-digital converter 105, so that the input signal of the analog-to-digital converter 105 can make the analog-to-digital converter 105 work normally. If it is determined after calculation that the analog-to-digital converter 105 can normally work by adjusting the gains of other components, an adjustment strategy of the gain of the radio frequency front-end function module can be formulated; if it is determined after calculation that the analog-to-digital converter 105 cannot normally operate no matter how the gain of other components is adjusted, the rf front-end function module cannot output a signal that can be used for subsequent signal processing.
When the gain and power adjusting device 106 determines that one of the above conditions is satisfied according to the IRSSI, the ORSSI, and the output signal of the rf front-end function module, it may be determined that the gain is not adjusted because a signal that enables the subsequent signal processing operation to be performed normally cannot be output through the gain adjustment. At this time, only the power of the rf front-end function module may be adjusted. Because the RF front-end functional module can not output effective signals, the power of the RF front-end functional module can be reduced to reduce unnecessary power consumption.
Specifically, when the gain and power adjusting device 106 determines that one of the above conditions is satisfied, the power of the rf front-end functional module may be reduced by adjusting parameters of all or part of components in the rf front-end functional module, for example, by adjusting a resistor or a capacitor in the circuit to change a current in the circuit, thereby reducing the power; alternatively, the reduction of the power of the rf front-end functional module may be achieved by turning off the power supply of some components.
Still taking the example that the aforementioned adc 105 cannot work normally, the gain and power adjustment device 106 may adjust parameters of the adc 105 to reduce the power of the adc 105, or may adjust parameters of other components to further reduce the power of the rf front-end function, or may turn off power of some components. When the gain and power adjusting device 106 turns off the power of some components, it should be considered whether the gain and power adjusting device 106 can also obtain the IRSSI, the ORSSI, and the input signals of the components that cannot normally operate before turning off the power after the gain and power adjusting device 106 turns off the power, so that the gain and power adjusting device 106 can control the components that have turned off the power to turn on the power again when the signal quality is recovered, or recover the parameters of the components in the rf front-end function module that are adjusted when the power is reduced. In addition, when it is determined that the power of the rf front-end function module can be increased, the adjustment strategy of the gain can be determined simultaneously according to one or more of IRSS, ORSSI and the output signal of the rf front-end function module.
Alternatively, when the gain and power adjusting device 106 determines that none of the above conditions are met according to IRSSI, ORSSI and the output signal of the rf front-end function module, only the gain may be considered to be adjusted, and the power may not be considered.
Preferably, when determining the gain adjustment strategy, the gain and power adjustment device 106 may first draw up an in-band signal gain adjustment scheme and an out-of-band signal gain adjustment scheme according to IRSSI and ORSSI, respectively, and then determine a final gain adjustment strategy of the rf front-end function module according to the drawn in-band signal gain adjustment scheme and the drawn out-of-band signal gain adjustment scheme. Because the IRSSI and the ORSSI are considered when the gain adjustment strategy is determined, the determined gain adjustment strategy can better meet the requirements in practical application.
Taking the bluetooth signal as an example, the bandwidth of the bluetooth signal is 1MHz, and a frequency can be randomly selected from 2402MHz to 2480MHz to transmit or receive the signal. Assuming that the frequency selected for receiving a certain bluetooth signal is 2450MHz, the 1MHz range centered on 2450MHz (i.e., 2449.5 MHz-2450.5 MHz) is referred to as the (frequency) band of the useful signal. If the interference signal also appears in this range, the interference signal is considered to fall in-band, and if the interference signal does not appear in the range of 2449.5 MHz-2450.5 MHz, the interference signal is considered to fall out-of-band. Several interfering signals are at 2480MHz, far away in frequency from the wanted signal, i.e. the interfering signals are considered far away from the wanted signal.
If the useful signal is S, the interference signal is I, the output signal is Pout, and the gain is G, then Pout is G (S + I). Normally, Pout has a preset maximum value (i.e. saturation value) Pmax, and in the prior art, when (S + I) increases due to an increase in the interference signal, Pout ≦ Pmax by decreasing G, which causes the output signal G × S of the useful signal to be decreased and does not reach the desired amplification factor.
Therefore, in order to solve the above problem, in the embodiment of the present invention, the gain and power adjusting device 106 plans an adjusting scheme for the in-band signal gain of the rf front-end function module according to the determined IRSSI of the received rf signal; and drawing up an adjusting scheme for the out-of-band signal gain of the radio frequency front end functional module according to the determined ORSSI of the received radio frequency signal. And then, according to the in-band signal gain adjustment scheme and the out-band signal gain adjustment scheme, a gain adjustment strategy for the radio frequency front-end functional module is determined.
Due to the reasons of distance, air attenuation, obstruction and the like, the strength of a radio frequency signal received by an antenna end of an actual receiver has large fluctuation, in order to enable the receiver to adapt to a large fluctuation range of the radio frequency signal, the strength of an output signal of the receiver is controlled within a certain range, the fluctuation range of IRSSI of the radio frequency signal can be divided into N value intervals, different value intervals correspond to different target in-band gains, and N is an integer greater than or equal to 1.
Typically, the strength of the radio frequency signal is about-90 dBm at a minimum and about 0dBm at a maximum. Taking N-3 as an example, the fluctuation range of the in-band signal strength of the rf signal is divided into 3 intervals, as shown in table 1. Wherein: HG (high gain), the corresponding target in-band gain is 60dB, when the in-band signal intensity of the radio frequency signal is in the range of (-90dBm, -70dBm), and the out-of-band interference signal is small; MG (medium gain), the corresponding target in-band gain is 40dB, when the in-band signal intensity suitable for radio frequency signal is in (-70dBm, -50dBm) range; LG (low gain) is suitable for use when the in-band signal strength of the RF signal is in the range (-50dBm, 0dBm) or when the out-of-band interference signal is large.
TABLE 1
| Interval(s) | Target in-band gain | Range of interval |
| HG | 60dB | IRSSI<-70dBm |
| MG | 40dB | -70dBm<IRSSI<-50dBm |
| LG | 20dB | IRSSI>-50dBm |
Taking the corresponding relationship between the gain IRSSI value interval and the gain shown in table 1 as an example, if the current IRSSI is in the MG interval, the gain of the rf front-end function module should be adjusted to 40dB, if the gain of the current rf front-end function module is 60dB, the adjustment scheme of the in-band signal gain is set to be reduced, if the gain of the current rf front-end function module is 40dB, the adjustment scheme of the in-band signal gain is set to be kept unchanged, and if the gain of the current rf front-end function module is 20dB, the adjustment scheme of the in-band signal gain is set to be increased.
The gain and power adjusting device may determine the gain of the current rf front-end function module according to the output signal of the rf front-end function module and the calculated rf signal, or calculate the gain of the current rf front-end function module according to the parameter settings of the components in the rf front-end function module, or may pre-establish a table of correspondence between the parameter settings of the components and the gain of the rf front-end function module, so that the automatic gain control device can conveniently obtain the gain of the current rf front-end function module.
Accordingly, for the gain adjustment of the out-band signal, the gain adjustment can be automatically performed according to the in-band signal gain adjustment method. Dividing the fluctuation range of the ORSSI of the radio frequency signal into M value intervals, wherein different value intervals correspond to different target out-of-band gains, and M is an integer greater than or equal to 1; determining a value interval where the ORSSI of the radio frequency signal is located, and drawing up an out-of-band signal gain scheme of the radio frequency front-end function module according to a target out-of-band gain corresponding to the value interval and the gain of the current radio frequency front-end function module.
The fluctuation range of IRSSI and the fluctuation range of ORSSI of the radio frequency signal may be estimated in advance, for example, the radio frequency signal is sampled for a plurality of times in advance, and the fluctuation ranges of IRSSI and ORSSI of the radio frequency signal are estimated in advance. The fluctuation ranges of the IRSSI and the ORSSI of the rf signal may also be dynamically determined, for example, the automatic gain control device determines the fluctuation ranges of the IRSSI and the ORSSI of the rf signal in a preset time period.
Alternatively, in addition to considering only the adjustment of the gain, or only the adjustment of the power, the adjustment strategy may be determined considering both the adjustment of the gain and the adjustment of the power. For example, when the gain is adjusted by some parameters, the power of the rf front-end functional module may be significantly increased, and at this time, the power of the rf front-end functional module may be properly controlled by adjusting other parameters while ensuring that the gain adjustment effect is achieved.
And step 204, controlling the radio frequency front end function module according to the determined adjusting strategy.
Optionally, if one adjustment policy corresponds to a set of parameter settings, the gain and power adjustment apparatus 106 may determine, according to the determined adjustment policy, a set of parameter settings corresponding to the adjustment policy and an index value corresponding to the set of parameter settings, and send the index value to each component in the radio frequency front end function module, and after receiving the index value, each component performs parameter setting according to the parameter settings corresponding to the index value, so as to achieve an effect of adjusting the gain and/or the power of the radio frequency front end function module.
In the above embodiments of the present invention, the IRSSI and the ORSSI of the radio frequency signal are determined according to the received output signal of the radio frequency front end function module, and the adjustment policy for the gain and/or the power of the radio frequency front end function module is determined according to one or more of the determined IRSSI, the determined ORSSI and the output signal, and the radio frequency front end function module is controlled according to the adjustment policy. When the received radio frequency signal is in the adjustable range, the gain of the radio frequency front-end functional module is automatically controlled according to the in-band signal intensity and the out-band signal intensity, so that the determined gain adjusting strategy can better meet the requirements of actual application; meanwhile, the gain can be correspondingly adjusted according to the changed out-of-band signal intensity, and the accuracy of gain control is improved. When the quality of the received radio frequency signal is poor and cannot meet the subsequent signal processing requirement, reducing the power of a radio frequency front end functional module so as to reduce unnecessary power consumption; in addition, when the quality of the received radio frequency signal is recovered to an adjustable range, the power of the radio frequency front end functional module can be increased, so that the normal work of the radio frequency front end functional module is ensured, and effective signals are provided for subsequent signal processing work.
Referring to fig. 3, a timing chart of an output signal obtained after applying the gain and power adjustment method provided by the above embodiment of the present invention is shown. As shown, the process can be divided into three phases: (1) before time is 20, no useful signal exists, only small noise is received, the gain and power adjusting device does not adjust the gain, and the power of the radio frequency front end functional module can be properly reduced; (2) when time is 20, a useful signal is received, because the gain is the default high gain, the amplitude of the final output signal is large and exceeds the expectation, and therefore after statistics and calculation of the automatic gain control device, the gain is adjusted from the high gain to the medium gain; (3) after time 30, the amplitude of the output signal is modulated to about 20, and then the gain will be stabilized at a medium gain if the input signal is unchanged.
Based on the same technical concept, the embodiment of the invention provides a gain and power adjusting device, which is used for realizing the method embodiment.
Referring to fig. 4, a schematic structural diagram of a gain and power adjusting apparatus provided in an embodiment of the present invention is shown, where the apparatus includes:
the receiving module 401 is configured to receive an output signal of the rf front-end function module.
A first determining module 402, configured to determine IRSSI and ORSSI of the radio frequency signal according to the output signal.
A second determining module 403, configured to determine an adjustment strategy for adjusting a gain, an adjustment strategy for power, or an adjustment strategy for gain and power of the rf front-end function module according to one or more of IRSSI, ORSSI and an output signal of the rf front-end function module.
A control module 404, configured to control the rf front-end function module according to the adjustment policy determined by the second determining module 403.
Optionally, the second determining module 403 is specifically configured to: and if the preset conditions are not met, determining an adjusting strategy for adjusting the gain of the radio frequency front-end function module according to one or more of IRSSI, ORSSI and the output signal of the radio frequency front-end function module. Wherein the preset conditions include:
the value of IRSSI is not in a preset range;
the value of ORSSI is not in a preset range;
and determining that the component in the radio frequency front-end functional module can not normally work due to the fact that the input signal of the component is not in the preset range according to the output signal, and calculating and judging that the input signal of the component can not be in the preset range through gain adjustment.
Optionally, the second determining module 403 is specifically configured to: if one of the preset conditions is met, determining an adjustment strategy for adjusting the power of the radio frequency front end function module to be the reduction of the power of the radio frequency front end function module. Wherein the preset conditions include:
the value of IRSSI is not in a preset range;
the value of ORSSI is not in a preset range;
and determining that the component in the radio frequency front-end functional module can not normally work due to the fact that the input signal of the component is not in the preset range according to the output signal, and calculating and judging that the input signal of the component can not be in the preset range through gain adjustment.
Optionally, after the control module 404 controls the rf front-end function module according to an adjustment strategy for reducing the power of the rf front-end function module, the second determining module 403 is further configured to:
when the preset conditions are judged to be not met according to the IRSSI, the ORSSI and the output signals, determining an adjusting strategy for adjusting the gain of the radio frequency front end function module according to one or more of the IRSSI, the ORSSI and the output signals of the radio frequency front end function module, and determining the adjusting strategy for adjusting the power of the radio frequency front end function module to increase the power of the radio frequency front end function module.
Optionally, an adjustment policy corresponds to a set of parameter settings, where a set of parameter settings includes parameter settings of one or more components in the rf front-end function module, and each set of parameter settings is identified using a unique index value.
The control module 404 is specifically configured to: and sending the index value of a group of parameter settings corresponding to the adjustment strategy to one or more components in the radio frequency front-end function module, so that the one or more components can adjust according to the parameter settings corresponding to the index value.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A method for adjusting gain and power, comprising:
receiving an output signal of a radio frequency front end functional module;
determining an in-band received signal strength indication IRSSI and an out-of-band received signal strength indication ORSSI of the radio frequency signal according to the output signal;
determining an adjustment strategy for adjusting the gain and/or power of the RF front-end function module according to one or more of the IRSSI, the ORSSI and the output signal;
controlling the radio frequency front end function module according to the adjusting strategy;
wherein the determining a regulation strategy for regulating the power of the radio frequency front end function module according to one or more of the IRSSI, the ORSSI and the output signal comprises:
if one of the preset conditions is met, determining an adjustment strategy for adjusting the power of the radio frequency front end function module to be the power reduction of the radio frequency front end function module;
the preset conditions include:
the value of the IRSSI is not in a preset range;
the value of the ORSSI is not in a preset range;
and determining that the component in the radio frequency front-end function module cannot normally work due to the fact that the input signal of the component is not in a preset range according to the output signal, and calculating and judging that the input signal of the component cannot be in the preset range through gain adjustment.
2. The method of claim 1, wherein determining an adjustment strategy for adjusting a gain of the radio frequency front end function based on the IRSSI, the ORSSI, and the output signal comprises:
if the preset conditions are not met, determining an adjusting strategy for adjusting the gain of the radio frequency front end function module according to one or more of the IRSSI, the ORSSI and the output signal;
the preset conditions include:
the value of the IRSSI is not in a preset range;
the value of the ORSSI is not in a preset range;
and determining that the component in the radio frequency front-end function module cannot normally work due to the fact that the input signal of the component is not in a preset range according to the output signal, and calculating and judging that the input signal of the component cannot be in the preset range through gain adjustment.
3. The method of claim 1, wherein after controlling the rf front-end function according to the throttling strategy to power down the rf front-end function, further comprising:
when the IRSSI, the ORSSI and the output signal are judged to be not satisfied with the preset condition, determining an adjusting strategy for adjusting the gain of the radio frequency front end function module according to one or more of the IRSSI, the ORSSI and the output signal, and determining the adjusting strategy for adjusting the power of the radio frequency front end function module to increase the power of the radio frequency front end function module.
4. The method of claim 1, wherein an adjustment strategy corresponds to a set of parameter settings, a set of parameter settings comprising parameter settings of one or more components in the radio frequency front end function, each set of parameter settings identified using a unique index value;
the controlling the radio frequency front end function module according to the adjustment strategy comprises:
and sending the index value of a group of parameter settings corresponding to the adjustment strategy to one or more components in the radio frequency front-end function module, so that the one or more components can adjust according to the parameter settings corresponding to the index value.
5. A gain and power adjustment apparatus, comprising:
the receiving module is used for receiving the output signal of the radio frequency front end functional module;
the first determining module is used for determining an in-band received signal strength indicator IRSSI and an out-of-band received signal strength indicator ORSSI of the radio-frequency signal according to the output signal;
a second determining module, configured to determine an adjustment strategy for adjusting the gain and/or power of the rf front-end function module according to one or more of the IRSSI, the ORSSI, and the output signal;
the control module is used for controlling the radio frequency front end function module according to the adjusting strategy;
the second determining module is specifically configured to:
if one of the preset conditions is met, determining an adjustment strategy for adjusting the power of the radio frequency front end function module to be the power reduction of the radio frequency front end function module;
the preset conditions include:
the value of the IRSSI is not in a preset range;
the value of the ORSSI is not in a preset range;
and determining that the component in the radio frequency front-end function module cannot normally work due to the fact that the input signal of the component is not in a preset range according to the output signal, and calculating and judging that the input signal of the component cannot be in the preset range through gain adjustment.
6. The apparatus of claim 5, wherein the second determining module is specifically configured to:
if the preset conditions are not met, determining an adjusting strategy for adjusting the gain of the radio frequency front end function module according to one or more of the IRSSI, the ORSSI and the output signal;
the preset conditions include:
the value of the IRSSI is not in a preset range;
the value of the ORSSI is not in a preset range;
and determining that the component in the radio frequency front-end function module cannot normally work due to the fact that the input signal of the component is not in a preset range according to the output signal, and calculating and judging that the input signal of the component cannot be in the preset range through gain adjustment.
7. The apparatus as claimed in claim 5, wherein after said control module controls said rf front-end function module according to a regulation strategy for reducing power of said rf front-end function module, said second determination module is further configured to:
when the preset conditions are judged to be not met according to the IRSSI, the ORSSI and the output signals, determining an adjusting strategy for adjusting the gain of the radio frequency front end function module according to one or more of the IRSSI, the ORSSI and the output signals, and determining the adjusting strategy for adjusting the power of the radio frequency front end function module to increase the power of the radio frequency front end function module.
8. The apparatus of claim 5, wherein an adjustment strategy corresponds to a set of parameter settings, a set of parameter settings comprising parameter settings of one or more components in the radio frequency front end function, each set of parameter settings identified using a unique index value;
the control module is specifically configured to: and sending the index value of a group of parameter settings corresponding to the adjustment strategy to one or more components in the radio frequency front-end function module, so that the one or more components can adjust according to the parameter settings corresponding to the index value.
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| CN112823549B (en) * | 2018-12-10 | 2023-04-07 | 深圳市欢太科技有限公司 | Method and device for adjusting Wi-Fi gain, electronic equipment and storage medium |
| CN109714816B (en) * | 2018-12-21 | 2021-08-10 | 武汉万集信息技术有限公司 | Power adjustment method, device and system for motor vehicle electronic identification read-write equipment |
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| US20130044842A1 (en) * | 2011-08-19 | 2013-02-21 | Hong Kong Applied Science and Technology Research Institute Company Limited | Radio-frequency front ends with automatic gain control |
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| CN102186233A (en) * | 2011-03-14 | 2011-09-14 | 上海云杉信息科技有限公司 | Rapid automatic gain control method, automatic gain control system and receiver system |
| CN102369769A (en) * | 2011-08-30 | 2012-03-07 | 华为技术有限公司 | Method and device for adjusting gain |
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