CN103297067A - Radio frequency control device and control method thereof - Google Patents
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Abstract
The invention discloses a wireless communication radio frequency control module with a self-error correction function, which comprises: the device comprises a signal receiving unit (101), a signal receiving condition feedback unit (102), a signal threshold control unit (103), a signal numerical value filtering unit (104), a control numerical value storage unit (105), a control signal generation enabling unit (106) and a control signal generation unit (107). The wireless communication radio frequency control module can effectively judge and feed back whether an effective signal is received or not under the condition that the connection between the communication baseband module and the communication radio frequency module is interfered, and effectively process the received signal to generate a signal waveform to control the communication radio frequency module.
Description
Technical field
The application relates to communications industry radio-frequency technique field, relates in particular to a kind of radio frequency control apparatus and control method thereof.
Background technology
Wireless communication system generally is divided into communication baseband module, radio frequency control apparatus and communication radio frequency module, and wherein, the communication baseband module is responsible for information source coding and source coding; The communication radio frequency module is responsible for chnnel coding and channel-decoding, comprises modulation submodule reconciliation tune module.Because the change of communication environment, the communication baseband module can be revised the parameter of communication radio frequency module, these parameters include but not limited to for the power parameter of setting the modulation submodule, be used for setting the gain parameter of demodulation submodule and be used for frequency trim parameter of modulation submodule and demodulation submodule etc.
Fig. 1 is the schematic diagram of prior art radio frequency control apparatus present position in wireless communication system.As shown in Figure 1, the front end of radio frequency control apparatus 100 is connected with communication baseband module 200, receives the base band control signals from communication baseband module 200, and according to the reception condition of signal to communication baseband module feedback signal reception condition; Its rear end is connected with communication radio frequency module 300, after it is suitably handled the base band control signal that receives, be converted to the radio-frequency (RF) control signal of corresponding format after, send it to the communication radio frequency module.
Traditional radio frequency control apparatus mainly is divided into two parts: receive submodule and digital controlled signal and produce submodule.Receiving submodule is responsible for receiving the base band control signal of baseband transmission and being buffered in the memory, the base band control signal that control signal generation submodule is responsible for receiving transfers the control signal waveform (as SPI signals specification or I2C signals specification) that communication radio frequency module (chip especially wherein) is formulated to, and namely traditional radio frequency control apparatus can directly change the base band control signal that receives into the control waveform of modulating submodule or demodulation submodule.
In real communication system, the communication baseband module all can be subjected to very big interference with the connected mode (cable is connected or the plate level connects) of communication radio frequency module, cause the communication radio frequency control device not receive useful signal or receive wrong signal: if do not receive signal, then can't control effectively to the communication radio frequency module; Send to modulation submodule or demodulation submodule in the communication radio frequency module if receive rub-out signal and directly these signals are transferred to control signal, all can cause such as the unexpected saltus step of modulation submodule transmitting power, the unexpected saltus step of demodulation submodule receiving gain or phenomenons such as modulation submodule, the irregular saltus step of demodulation submodule frequency.
Form with the base band control signal is that the SPI standard signal is example, and the SPI signal is a kind of interface bus of synchronous serial peripheral hardware, and it can make processor and various peripheral apparatus communicate with serial mode, and working method is master-slave mode.SPI is the synchronous communication bus of a kind of high speed, full duplex, adds up to four buses, is respectively CLK (clock signal) ,～CS (signal enable signal), MOSI (main equipment output/from the equipment input), MISO (the main equipment input/from equipment output).MISO and MOSI are transmission of data signals, are referred to as the DATA signal hereinafter.Fig. 2 is the sequential chart of standard SPI signal and wrong SPI signal in the prior art.The SPI signal standards is defined in enable signal and effectively (is generally low level, referring among Fig. 2～the CS signal) time by the rising edge clock valid data (referring to the CLK signal among Fig. 2) of sampling, the DATA signal generally remains on high level at other times (when not transmitting data).
Fig. 2 the first half is the sequential chart of standard SPI signal.DATA signal wherein is if this signal is transmitted as MSD, and " the original SPI signal " signal that level transmits shown in Fig. 2 first half is 8 bit binary data 0b00101011 (be 0x2B with hexadecimal representations, be 43 with decimal representation).
Fig. 2 the latter half is the sequential chart of wrong SPI signal.DATA signal (referring to " level signal " in Fig. 3 the latter half) with respect to same quality, because the dislocation (relative DATA signal) of CLK signal and～CS signal, ' 0 ' of highest order is not sampled, because the DATA signal remains on high level at other times, last sampled result is 8 bit binary data 0b01010111 (be 0x57 with hexadecimal representations, be 87 with decimal representation).If these data are used for controlling the radiofrequency signal gain (be the magnitude of power of unit with dB) of modulation submodule, if data are 87 from 43 misinformations, for power signal, its gain will increase about 15848 times (namely
Doubly), this will seriously influence local all will causing very with the wireless communication system of communicating by letter with it.
Summary of the invention
(1) technical problem that will solve
At the above-mentioned one or more problems that exist in the prior art, the present invention proposes a kind of communication radio frequency module controls device and control method thereof, under situation about being interfered at the signal between communication radio frequency module and the communication baseband module, paired domination number word signal is effectively handled, and avoids modulation submodule or demodulation submodule are carried out improper control.
(2) technical scheme
According to an aspect of the present invention, provide a kind of radio frequency control apparatus, its front end is connected with the communication baseband module, and its rear end is connected with the communication radio frequency module.This device comprises: signal receiving unit, be connected with the communication baseband module, and be used for the current demand signal numerical value that obtains from the communication baseband module; Signal reception condition feedback unit is used for sending current demand signal numerical value to the signal threshold value control unit when current demand signal numerical value is effective; The signal threshold value control unit, be used for calculating the difference from current demand signal numerical value and the filtering result of its first buffer last time, if difference greater than signal numerical value compare threshold and difference greater than the cumulative frequency of signal numerical value compare threshold during less than the signal errors count threshold, transmission second not enable signal to control signal generation enables the unit, and the cumulative frequency of difference greater than signal numerical value compare threshold upgraded; Control signal generates and to enable the unit, is connected with the signal threshold value control unit, is used for sending " control and do not enable " signal when receiving second not behind the enable signal of signal threshold value control unit to the control signal generation unit; The control signal generation unit, enabling the unit with communication radio frequency module, control numeric storage unit and control signal generation is connected, after being used for receiving control signal and generating " the control does not enable " signal that enables the unit, do not generate radio-frequency (RF) control signal to the communication radio frequency module, generate update signal to controlling numeric storage unit.
According to another aspect of the present invention, also provide a kind of RF control method, this method comprises: steps A, the current demand signal numerical value that signal receiving unit obtains from the communication baseband module; Step B, when current demand signal numerical value was effective, signal reception condition feedback unit sent current demand signal numerical value to the signal threshold value control unit; Step C, the signal threshold value control unit calculates filtering result's last from current demand signal numerical value and its first buffer difference, if difference greater than signal numerical value compare threshold and difference greater than the cumulative frequency of signal numerical value compare threshold during less than the signal errors count threshold, transmission second not enable signal to control signal generation enables the unit, and the cumulative frequency of difference greater than signal numerical value compare threshold upgraded; Step F, when receiving second not behind the enable signal of signal threshold value control unit, control signal generates and enables the unit and send " control does not enable " signal to the control signal generation unit; Step G, control signal generation unit receive after control signal generates " the control does not enable " signal enable the unit, do not generate radio-frequency (RF) control signal to the communication radio frequency module, generate update signal to controlling numeric storage unit.
Description of drawings
Fig. 1 is the schematic diagram of prior art radio frequency control apparatus present position in wireless communication system;
Fig. 2 is the sequential chart of standard SPI signal and wrong SPI signal in the prior art;
Fig. 3 is the structural representation of embodiment of the invention radio frequency control apparatus;
Fig. 4 is the flow chart of embodiment of the invention RF control method;
Fig. 5 is the schematic diagram of embodiment of the invention communication radio frequency module each location mode in first handling process;
Fig. 6 is the schematic diagram of embodiment of the invention communication radio frequency module each location mode in second handling process.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
In the described embodiment, the form of supposing the base band control signal is the SPI standard signal below, and the signal of the control that the communication radio frequency module that circuit of the present invention need be controlled is required is similarly the SPI standard signal.The those skilled in the art should understand, and for the signal of other standards, the present invention is suitable equally.
In one exemplary embodiment of the present invention, a kind of radio frequency control apparatus has been proposed.Fig. 3 is the structural representation of embodiment of the invention radio frequency control apparatus.As shown in Figure 3, this radio frequency control apparatus comprises: signal receiving unit 101, signal reception condition feedback unit 102, signal threshold value control unit 103, number of signals value filtering unit 104, control numeric storage unit 105, control signal generate and enable unit 106 and control signal generation unit 107.Need to prove, wherein Bai Se arrow is represented the transmission path of signal numerical value, and the arrow of black represents not contain the transmission path (as " control enables " signal/" control does not enable " signal and second enable signal/second enable signal not) of the enable signal of numerical signal.Below respectively each component units is elaborated.
Signal reception condition feedback unit 102 is connected with signal receiving unit 101, is used for the reception condition of signal receiving unit is monitored, and the monitoring situation is fed back to communication baseband module 200.Feedback when normally receiving information ' receives normally ' signal, and sends current demand signal numerical value to signal threshold value control control unit 103.If do not receive any effective SPI information within a certain period of time, then send the alarm signal of ' receiving unusual ' to communication baseband module 200.Simultaneously, signal reception feedback unit 102 also is used for receiving feeding back to the communication baseband module from the information (numerical value exceeds threshold information) of signal threshold value control unit 103 and with it.
Signal threshold value control unit 103 is connected with signal reception condition feedback unit 102, comprising: threshold information register, signal errors counter register, numerical value cache register and comparison subelement.Wherein: the threshold information register, for signal numerical value compare threshold and the signal errors count threshold of store initialization; The signal errors counter register is for the accumulation numerical value of storing the number of times that reports an error.The numerical value cache register is used for the filtering result of the last time that storage and current numerical value compares.Compare subelement, be connected with above-mentioned threshold information register, signal errors counter register, numerical value cache register, after being used for receiving the current demand signal numerical value from signal reception condition feedback unit 102, data in itself and the numerical value cache register are compared, whether judge both differences greater than signal numerical value compare threshold in the threshold information register, according to the result who judges following two kinds of situations arranged:
Situation one: if the difference of the data in current numerical value and the numerical value cache register is less than or equal to the signal numerical value compare threshold of setting, then notify the control signal generation to enable unit 106 current demand signals and enable, and current numerical value is transferred to number of signals value filtering unit 104 (handling process that vide infra A);
Situation two: if the difference of the data in current numerical value and the numerical value cache register is greater than the signal numerical value compare threshold of setting, judge that then numerical value in the signal errors counter register is whether greater than the signal errors count threshold: (1) is if the numerical value in the signal errors counter register is less than or equal to signal errors count threshold (handling process that vide infra B), then send and exceed threshold value and report an error signal to signal reception condition feedback unit 102, the generation of notice control signal enables unit 106 current demand signals and does not enable, and the numerical value in the signal errors counter register adds 1; (2) if the numerical value in the signal errors counter register greater than the signal errors count threshold, then notifies the control signal generation to enable unit 106 current demand signals to enable, transfer data to number of signals value filtering unit 104 (handling process that vide infra D).Decline at this paper will be elaborated to handling process A, handling process B, handling process C and handling process D.
In addition, signal threshold value control unit 103 also receives filtering result after the filtering of number of signals value filtering unit 104 feedback, and deposits it in numerical value cache register, when treating to receive useful signal next time in contrast.
Numerical signal filter unit 104 is connected with the signal threshold value control unit, is used for receiving the current demand signal numerical value that signal threshold value control unit 103 transmits, and reads at least two historical filtering datas in the control numeric storage unit 105; After this current demand signal numerical value and at least two historical filtering datas multiply by coefficient of correspondence respectively, and calculate current filtering result.Then current filtering result is existed in the control numeric storage unit 105.
Control numeric storage unit 105 is the memory modules that two reading-writing port are provided, and can write and read data for number of signals value filtering unit 104, can read data for control signal generation unit 107 simultaneously.The control numeric storage unit upgrades the storage (will describe in detail in conjunction with various situations hereinafter) of numerical value simultaneously according to the sign situation of signal reception condition feedback unit 102.
Control signal generates and enables the notification signal that unit 106 reception signal threshold value control units 103 provide.If signal threshold value control unit 103 notice current demand signals enable, then control signal generates and enables unit 106 generation enable signals, and its state of being about to is updated to " enabling " state; Otherwise then do not generate enable signal, its state of being about to is updated to " not enabling " state.
Control signal generation unit 107 comprises the required control signal generative circuit of respective communication radio-frequency module, control signal generation unit 107 enables unit 106 generation radio-frequency module control signals in each cycle according to control numeric storage unit 105 and control signal generation, if the control signal generation enables unit 106 and provides ' enabling ' signal (as corresponding ' Y ' among Fig. 5/Fig. 6), then control signal generation unit 107 reads the corresponding data in the control numeric storage unit 105 and generates corresponding control signal; Otherwise, if enabling unit 106, the control signal generation provides ' not enabling ' signal (as corresponding ' N ' among Fig. 5/Fig. 6), then control signal generation unit 107 does not generate any control signal when the free time in pre-treatment cycle.
Fig. 4 is the flow chart of embodiment of the invention RF control method.As shown in Figure 4, the present embodiment RF control method comprises:
Step S402 receives the base band control signal, and signal receiving unit (101) carries out waveform decoder, solves current numerical value, and numerical value is passed to signal reception condition feedback unit (102).
Step S404, does signal receive feedback unit 102 and judges whether to be useful signal? if, execution in step S406, otherwise, execution in step S408;
Step S406, the handling process of invalid signals numerical value (handling process C), flow process finishes;
Whether step S408, signal threshold value control unit 103 judge the difference of current demand signal numerical value and numerical value cache size greater than threshold value, if, execution in step S412 then, otherwise, execution in step S410 then.
Step S410, the handling process of normal signal numerical value (handling process A), flow process finishes;
Whether step S412, signal threshold value control unit 103 judge signal threshold value error register numerical value greater than signal errors technology threshold value, if, execution in step S416 then; Otherwise, execution in step S414;
Step S414, signal numerical value saltus step handling process (handling process D), flow process finishes;
Step S416, the handling process of rub-out signal numerical value (handling process B), flow process finishes.
Fig. 5 is the schematic diagram of embodiment of the invention communication radio frequency module each location mode in first handling process.Fig. 6 is the schematic diagram of embodiment of the invention communication radio frequency module each location mode in second handling process.In Fig. 5 and Fig. 6, the left side is the title of corresponding registers or result, and the right side volume is the concrete numerical value of corresponding registers or result.Specifically, for Fig. 5 and Fig. 6:
The 1st row is: the numerical signal that signal receiving unit receives;
The 2nd row is: the feedback signal of signal reception condition feedback unit;
The 3rd row is: the numerical value of depositing in the numerical value cache register (signal threshold value control unit);
The 4th row is: signal numerical value compare threshold=32 o'clock, and the result of signal threshold value control unit;
The 5th row is: in signal errors count threshold=2 o'clock, and the count value of signal threshold value error count register (signal threshold value control unit);
The 6th row is: control signal generates the state that enables the unit;
The 7th row is: the numerical value that control numeric storage unit (buff1 and buff2) is stored;
Eighth row is: current numerical value and the result calculated of number of signals value filtering unit;
The 9th row is: the numerical value that the control numeric storage unit is stored;
The 10th row is: control signal generates the state that enables the unit;
The 11st row is: the output signal of control signal generation unit.
Describe below in conjunction with Fig. 5 and the embodiment of the invention communication radio frequency of Fig. 6 resume module flow process.
The handling process of normal signal numerical value (handling process A):
To be that example explains that the described circuit of invention is to the handling process of normal signal, shown in the signal processing cycle of institute's mark ' A ' among Fig. 5 with a normal signal numerical value at first below.This handling process comprises:
Steps A 1, signal receiving unit 101 is at first decoded to waveform, and to decode its data that receive be 44, and sends data to signal reception condition feedback unit 102;
Steps A 2, signal reception condition feedback unit 102 are confirmed the data reception condition and are sent confirmation (' Y ' as shown in FIG.) to the communication baseband module;
Steps A 3, the numerical value of current time in signal threshold value control unit 103 buffer memorys is 41, both numerical difference between are 3 (44-41=3), and the initializing signal numerical value compare threshold in the numerical threshold control unit 103 is 32, numerical difference between 3 is less than threshold value, (current demand signal error count register value is 0 simultaneously, when numerical difference between less than signal numerical value compare threshold the time, no matter whether the numerical value in the signal threshold value error count register is greater than signal errors technology threshold value, signal threshold value control unit 103 all will identify current demand signal numerical value and enable) the cell threshode control unit identifies this data enable) (as showing ' PASS ' among Fig. 5), and the notice control signal generates and enables unit (106) current demand signal numerical value and enable (generate as control signal among Fig. 5 and enable the unit ' Y ');
Steps A 4, while numerical threshold control unit 102 also is transferred to current data number of signals value filtering unit 103 and carries out filtering operation as current numerical value (hereinafter Cu_value).
Number of signals value filtering unit 103 circuit calculating formulas as an example are:
F_result＝Cu_value×0.5+buff1×0.25+buff2×0.25
Wherein F_result is result of calculation (Filter Result), Cu_value is current numerical value (Current Value), and buff1 and buff2 are that number of signals value filtering unit 103 reads from controlling numeric storage unit 104 (the control numeric storage unit comprises buff2, buff1 and OUT3 data register).
As shown in Figure 5, under the current state in the numeric storage unit among the buff1 storing value be that storing value is 41 among 42, the buff2, the current numerical value (Cu_value) that receives from numerical threshold control unit 102 is 44.Calculating gained F_result is 42.75 (44 * 0.5+42 * 0.25+41 * 0.25), because the radio frequency part control word can only be integer in the current example, so the result will be rounded to 43 and deposit in the OUT numerical value register of controlling numeric storage unit 104 (as shown in Figure 5), number of signals value filtering unit 103 deposits result 43 to prepare against in signal threshold value control unit 102 buffer memorys in and compares when next valid data arrive.
Steps A 5, finish in number of signals value filtering unit 104 to the data of control numeric storage unit 105 and deposit operation back (OUT numerical value register) in, control signal generation unit 107 will generate the state that enables unit 106 according to control numeric storage unit 105 and control signal and determine whether to generate radio-frequency (RF) control signal.Control signal generates and to enable unit 106 states and be ' Y ' (enabling) under the current state, and the OUT numerical value register value of control numeric storage unit is 43, and control signal generation unit (107) will generate control signals by numerical value 43.
Steps A 6, behind the pre-treatment end cycle, control numeric storage unit 105 with the data of arrangement own (because signal reception condition feedback unit 102 is denoted as ' Y ', so carry out following correction operation), write buff2 with the data among the buff1, write buff1 (referring to the processing cycle that is denoted as ' A ' among Fig. 5 and numerical value change of handling in the periodic Control numeric storage unit (buff1/buff2) thereafter) with OUT numerical value.
Handling process B (handling process of rub-out signal numerical value):
To be that example explains that the described circuit of invention is to the handling process of rub-out signal, shown in the signal processing cycle of institute's mark ' B ' among Fig. 5 with a wrong waveform at first below.This handling process comprises:
Step B1, signal receiving unit 101 is at first decoded to waveform, and decodes its numerical value that receives and be 87 (because similar mistakes shown in Figure 1), and sends data to signal reception condition feedback unit 102;
Step B2, signal reception condition feedback unit 102 confirm the data reception condition and send confirmation (' Y ' as shown in FIG.) to the communication baseband module.The numerical value of current time in signal threshold value control unit 103 buffer memorys is 43, and both numerical difference between are 43 (87-44=43), and 103 initialization threshold value is 32 in the numerical threshold control unit, and numerical difference between 43 is greater than threshold value.Numerical difference between greater than threshold value the time signal threshold value error count register self value add 1, in current example, signal threshold value error register numerical value is modified to 1,1 numerical value from 0, and (signal errors count threshold initial value is 2 in the current example less than the signal errors count threshold.If the difference of the data in current numerical value and the numerical value cache register, then indicates these data and does not enable less than the signal errors count threshold greater than the signal numerical value compare threshold of setting and the numerical value in the signal errors counter register);
Step B3, these data of numerical threshold control unit 103 sign do not enable (as showing ' ERROR ' among Fig. 5), and the notice control signal generates and enables unit 106 current demand signal numerical value and do not enable (generating ' N ' that enables the unit as control signal among Fig. 5).Because current demand signal numerical value has been denoted as and has not enabled, current numerical value does not deposit in as Cu_value, Cu_value is constant, because buff1 and buff2 handle all after dates last one and are revised by control numeric storage unit 105, current buff2, buff1, Cu_value is respectively 43,43,43;
Step B4, number of signals value filtering unit 103 circuit calculating formulas (F_result=Cu_value * 0.5+buff1 * 0.25+buff2 * 0.25) result of calculation of substitution example is 43;
Step B5, do not enable because the control signal generation enables unit 106 sign current demand signal numerical value, control signal generation unit 107 will not generate control signal (' free time ' state of the control signal generation unit 107 that indicates in as Fig. 5) behind the pre-treatment end cycle.Above-mentioned numerical result still deposits the OUT register of control numeric storage unit 105 and the numerical value cache register of signal threshold value control unit 103 in;
Step B6, because signal reception condition feedback unit 102 is denoted as ' Y ', so control numeric storage unit 105 carries out following correction operation: write buff2 with the data among the buff1, write buff1 (referring to the processing cycle that is denoted as ' B ' among Fig. 5 and the numerical value change in the processing periodic Control numeric storage unit (buff1/buff2) thereafter) with OUT numerical value.
Handling process C (handling process of invalid signals numerical value):
To be that example is explained the described circuit of invention to the handling process of invalid signals with an invalid signals waveform at first below, shown in the signal processing cycle of institute's mark ' C ' among Fig. 5, this handling process comprises:
Step C1, signal receiving unit 101 does not receive the useful signal waveform at current period, and notification signal reception condition feedback unit;
Step C2, signal reception condition feedback unit 102 confirm data reception conditions (being invalid signals under the current example) and send confirmation (' N ' as shown in FIG.) to base band;
Step C3, signal threshold value control unit 103 receives the invalid signals sign from numerical value reception condition feedback unit 102 in this case, directly sign current number value signal does not enable, (as ' ERROR ' among Fig. 5), and the notice control signal generates and to enable unit 106 current demand signal numerical value and do not enable (generate as control signal among Fig. 5 and enable the unit ' N ');
Step C4, signal threshold value filter unit 104 still carries out numerical computations, but because signal reception condition feedback unit 102 sign current demand signals are ' N ', control numeric storage unit 105 is not revised the OUT register, buff1 and buff2 register is not revised yet behind the data processing cycle yet;
Step C5, do not enable because the control signal generation enables unit 106 sign current demand signal numerical value, control signal generation unit 107 will not generate control signal (' free time ' state of the control signal generation unit 107 that indicates in as Fig. 5) behind the pre-treatment end cycle.
Handling process D (handling process of signal numerical value saltus step):
In above-mentioned handling process B, we have provided under the situation that wrong waveform occurs and wrong saltus step to have occurred and to its handling process of handling.In the practical application of mobile communication, especially high-speed applications is (as car phone, high-speed mobile phone application etc.), because frequent variations can often take place in the distance of its terminal and base band and noise conditions, especially can propose conversion demand frequently to power of communications in the inferior area of the come in and go out woods, inside, cement house and overpass, require the radio-frequency module control signal to change with baseband signal soon in this case.The present invention introduces the signal errors count threshold, and normal base band power saltus step is required to be distinguished with wrong signal waveform.Handling process D has illustrated the flow process that the present invention is identified the signal waveform of normal base band power saltus step requirement and mistake and handle.
Below will with a normal power significantly the saltus step waveform be that example explains that the described circuit of invention is to the power handling process of skip signal significantly.Shown in the D1 to D7 of institute's mark among Fig. 6, owing to the mobile communication environment requirement, saltus step significantly (situation that this example provides is that base band requires to promote significantly, and the situation that the base band requirement reduces significantly and this example class are seemingly) appears in communication baseband system requirement power.
Cycle D1, shown in the signal processing cycle of the mark D1 of institute among Fig. 6, signal receiving unit 101 is at first decoded to waveform, and to decode its data that receive be 87, and sending data to signal reception condition feedback unit 102, signal reception condition feedback unit 102 is confirmed the data reception conditions and is sent confirmation (' Y ' as shown in FIG.) to the communication baseband module.The numerical value of current time in signal threshold value control unit 103 buffer memorys is 43, both numerical difference between are 44 (87-43=44), and 103 initializing signal numerical value compare threshold is 32 in the numerical threshold control unit, numerical difference between 44 is greater than threshold value, and the numerical value in the signal threshold value error count register in the signal threshold value control unit 102 is modified to 1 from 0, because the numerical value in the register is less than the signal errors count threshold, these data of cell threshode control unit 103 sign do not enable (as showing ' ERROR ' among Fig. 6), and the notice control signal generates and enables unit 106 current demand signal numerical value and do not enable.Other handling processes are not generating control signal, not the numerical value cache register in the update signal threshold value control unit 103 referring to preamble handling process B behind the pre-treatment end cycle.
Cycle D2, shown in the signal processing cycle of the mark D2 of institute among Fig. 6, its handling process is similar to the D1 cycle, signal receiving unit 101 is at first decoded to waveform, and to decode its data that receive be 89, and sending data to signal reception condition feedback unit 102, signal reception condition feedback unit 102 is confirmed the data reception conditions and is sent confirmation (' Y ' as shown in FIG.) to base band.The numerical value of current time in signal threshold value control unit 103 buffer memorys is 43, both numerical difference between are 46 (89-43=46), and 103 initializing signal numerical value compare threshold is 32 in the numerical threshold control unit, numerical difference between 46 is greater than threshold value, and the numerical value in the signal threshold value error count register in the signal threshold value control unit 102 is modified to 2 from 1, because the numerical value in the register is less than the signal errors count threshold, these data of cell threshode control unit 103 sign do not enable (as showing ' ERROR ' among Fig. 6), and the notice control signal generates and enables unit 106 current demand signal numerical value and do not enable.Other handling processes are not generating control signal, not the numerical value cache register in the update signal threshold value control unit 103 referring to preamble handling process B behind the pre-treatment end cycle.
Cycle D3, as being denoted as ' D3 ' processing cycle among Fig. 6, signal receiving unit 101 is at first decoded to waveform, and to decode its data that receive be 90, and sending data to signal reception condition feedback unit 102, signal reception condition feedback unit 102 is confirmed the data reception conditions and is sent confirmation (' Y ' as shown in FIG.) to base band.The numerical value of current time in signal threshold value control unit 103 buffer memorys is 43, both numerical difference between are 47 (90-43=47), and 103 initializing signal numerical value compare threshold is 32 in the numerical threshold control unit, numerical difference between 47 is greater than threshold value, and the numerical value in the signal threshold value error count register in the signal threshold value control unit 102 is modified to 3 from 2, since the difference of the numerical value cache register numerical value in current data and the signal threshold value control unit 103 greater than the numerical value in signal numerical value compare threshold and the register greater than the signal errors count threshold, cell threshode control unit 103 these data enables of sign (as showing ' PASS ' among Fig. 6), after this flow process is pressed the numerical value enabling process and is handled (referring to handling process A).
D4, D5, D6, D7 that D3 handled after the cycle handle the processing cycle (referring to handling process A) that periodic group is similar to general data, as can be seen from Figure 6, when the base band control signal saltus step occurs really, circuit of the present invention can very fast Tracing Control signal, and control signal generation unit 107 processing cycle about 7 namely can be exported the signal numerical value very close with signal amplitude that base band requires.
In sum, circuit of the present invention not only can handle preferably because the signal numerical value decoding error that the baseband signal error of transmission produces, also trace signals numerical value change faster when saltus step appears in baseband signal, can produce the suitable radio-frequency module control signal of numerical value effectively, control the communication radio frequency module effectively.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a radio frequency control apparatus is characterized in that, its front end is connected with the communication baseband module, and its rear end is connected with the communication radio frequency module, comprising:
Signal receiving unit is connected with the communication baseband module, is used for the current demand signal numerical value that obtains from described communication baseband module;
Signal reception condition feedback unit is used for sending current demand signal numerical value to the signal threshold value control unit when described current demand signal numerical value is effective;
The signal threshold value control unit, be used for calculating the difference from described current demand signal numerical value and the filtering result of its first buffer last time, if described difference greater than signal numerical value compare threshold and difference greater than the cumulative frequency of signal numerical value compare threshold during less than the signal errors count threshold, transmission second not enable signal to control signal generation enables the unit, and the cumulative frequency of difference greater than signal numerical value compare threshold upgraded;
Control signal generates and to enable the unit, is connected with described signal threshold value control unit, is used for sending " control and do not enable " signal when receiving described second not behind the enable signal of described signal threshold value control unit to the control signal generation unit;
The control signal generation unit, enabling the unit with communication radio frequency module, described control numeric storage unit and control signal generation is connected, after being used for receiving described control signal and generating " the control does not enable " signal that enables the unit, do not generate radio-frequency (RF) control signal to the communication radio frequency module, generate update signal to controlling numeric storage unit.
2. radio frequency control apparatus according to claim 1 is characterized in that, also comprises:
Number of signals value filtering unit is connected with described signal threshold value control unit; And
The control numeric storage unit is connected with the control signal generation unit with described number of signals value filtering unit;
Wherein, described signal reception condition feedback unit also is used for sending first enable signal to the control numeric storage unit when described current demand signal is effective;
If also being used for described difference, during less than the signal errors count threshold, the value of second buffer in the described number of signals value filtering unit is not upgraded greater than the cumulative frequency of signal numerical value compare threshold greater than signal numerical value compare threshold and difference described signal threshold value control unit;
Described number of signals value filtering unit, be used in conjunction with at least one historical filtering result the value of second buffer being carried out filtering, generate current filtering result, and this current filtering result is sent first buffer of described signal threshold value control unit and controls numeric storage unit;
Described control numeric storage unit is used for providing historical filtering result to described number of signals value filtering unit; After receiving described first enable signal, will obtain described current filtering result and it will be deposited from described number of signals value filtering module, after the update signal of receiving the control signal generation unit, utilize described current filtering result to upgrade described historical filtering result.
3. radio frequency control apparatus according to claim 2 is characterized in that, described signal threshold value control unit comprises:
First buffer is used for the filtering result of buffer memory from the last time that filtering subelement described in the described number of signals value filtering unit obtains;
Signal errors counting is deposited subelement, is used for described difference is counted greater than the number of times of described default signal numerical value compare threshold;
The difference computation subunit is connected with described signal reception condition feedback unit and described first buffer, is used for calculating described current demand signal information and the last filtering result's of described first buffer difference;
Compare subelement, be connected with described signal errors counter register with described difference computation subunit, if be used for described difference greater than the value of default signal numerical value compare threshold and described signal errors counter register during less than default signal errors count threshold, notify described signal errors counter register to upgrade, transmission second not enable signal to control signal generation enables the unit, the value of second buffer in the described number of signals value filtering unit is not upgraded.
4. radio frequency control apparatus according to claim 3 is characterized in that,
Described relatively subelement, if also be used for described difference greater than the value of described signal numerical value compare threshold and described signal errors counter register during more than or equal to described signal errors count threshold, then notify described signal errors counter register to make zero, send second enable signal to control signal generation and enable the unit, utilize current demand signal numerical value that the value of second buffer in the described number of signals value filtering unit is upgraded;
Described control signal generates and enables the unit, also is used for sending " control enables " signal to the control signal generation unit behind described second enable signal that receives described signal threshold value control unit;
Described control signal generation unit, also be connected with the communication radio frequency module, be used for receiving described control signal generate enable " control enables " signal of unit after, from described control numeric storage unit, extract current filtering result and generate radio-frequency (RF) control signal, and this radio-frequency (RF) control signal is sent to the communication radio frequency module, generate update signal to controlling numeric storage unit.
5. radio frequency control apparatus according to claim 4, it is characterized in that, described relatively subelement, if also be used for described difference less than default signal numerical value compare threshold, then send second enable signal to control signal generation and enable the unit, utilize current demand signal numerical value that the value of second buffer in the described number of signals value filtering unit is upgraded.
6. radio frequency control apparatus according to claim 2 is characterized in that,
Described signal reception condition feedback unit also is used for sending the invalid signals sign to the signal threshold value control unit when described current demand signal numerical value is invalid, to controlling not enable signal of numeric storage unit transmission first;
Described signal threshold value control unit, also be used for after receiving the invalid signals sign, the value of its first buffer is not upgraded, the cumulative frequency of difference greater than signal numerical value compare threshold do not upgraded, the value of second buffer in the described number of signals value filtering unit is not upgraded, transmission second not enable signal to control signal generation enables the unit;
Described number of signals value filtering unit, in conjunction with at least one historical filtering result the value in second buffer is carried out filtering, generate current filtering result, and this current filtering result is sent first buffer of described signal threshold value control unit and controls numeric storage unit;
Described control numeric storage unit also is used for not depositing described current filtering result receiving described first not behind the enable signal; After receiving the not update signal of control signal generation unit, do not upgrade described historical filtering result;
Described control signal generates and enables the unit, also is used for sending " control and do not enable " signal when receiving described second not behind the enable signal of described signal threshold value control unit to the control signal generation unit;
Described control signal generation unit after also being used for receiving described control signal and generating " the control does not enable " signal that enables the unit, keeps present situation, does not generate radio-frequency (RF) control signal to the communication radio frequency module, generates not update signal to controlling numeric storage unit.
7. radio frequency control apparatus according to claim 6 is characterized in that, described signal reception condition feedback unit also is used for:
When described current demand signal numerical value is effective, receive normal signal to communication baseband module feedback;
When described current demand signal numerical value is invalid, receive anomalous signals to communication baseband module feedback.
8. radio frequency control apparatus according to claim 2 is characterized in that, described control numeric storage unit comprises:
Historical filtering result deposits subelement, is used for depositing described at least one historical filtering result;
Current filtering result deposits subelement, is used for depositing described current filtering result after receiving described first enable signal;
Upgrade subelement, be used for after the update signal of receiving the control signal generation unit, utilizing described current filtering result to upgrade described historical filtering result.
9. radio frequency control apparatus according to claim 2 is characterized in that, described number of signals value filtering unit comprises:
Second buffer;
Coefficient is deposited subelement, is used for depositing the described second buffer cache size and at least one historical filtering result's filter factor;
The filtering subelement, be used for the described second buffer cache size with sue for peace after at least one historical filtering result multiply by its corresponding filter factor respectively, generate current filtering result;
Send subelement, be used for described current filtering result is sent to respectively first buffer and the control numeric storage unit of described signal threshold value control unit.
10. radio frequency control apparatus according to claim 9 is characterized in that, the number that described coefficient is deposited the historical filtering result in the subelement is 2, and described filtering subelement is used for obtaining current filtering result according to following formula:
F_result＝Cu_value×a1+buff1×a2+buff2×a3，
Wherein, F_result is current filtering result, Cu_value is current demand signal numerical value, and buffer1 and buffer2 are that described historical filtering result deposits 2 historical filtering results in the subelement, and a1, a2 and a3 are respectively the filter factor of Cu_value, buffer1 and buffer2.
11., it is characterized in that described radio frequency control apparatus arranges or place described communication radio frequency module separately according to each described radio frequency control apparatus in the claim 1 to 10.
12. a RF control method is characterized in that, comprising:
Steps A, the current demand signal numerical value that signal receiving unit obtains from the communication baseband module;
Step B, when described current demand signal numerical value was effective, signal reception condition feedback unit sent current demand signal numerical value to the signal threshold value control unit;
Step C, the signal threshold value control unit calculates filtering result's last from described current demand signal numerical value and its first buffer difference, if described difference greater than signal numerical value compare threshold and difference greater than the cumulative frequency of signal numerical value compare threshold during less than the signal errors count threshold, transmission second not enable signal to control signal generation enables the unit, and the cumulative frequency of difference greater than signal numerical value compare threshold upgraded;
Step F, when receiving described second not behind the enable signal of described signal threshold value control unit, control signal generates and enables the unit and send " control does not enable " signal to the control signal generation unit;
Step G, control signal generation unit receive after described control signal generates " the control does not enable " signal that enables the unit, do not generate radio-frequency (RF) control signal to the communication radio frequency module, generate update signal to controlling numeric storage unit.
13. RF control method according to claim 12 is characterized in that,
Described step B also comprises: when described current demand signal numerical value was effective, signal reception condition feedback unit sent first enable signal to the control numeric storage unit;
Described step C also comprises: if described difference greater than signal numerical value compare threshold and difference greater than the cumulative frequency of signal numerical value compare threshold during less than the signal errors count threshold, the signal threshold value control unit does not upgrade the value of second buffer in the described number of signals value filtering unit;
Also comprise after the described step C: step D, number of signals value filtering unit carries out filtering in conjunction with at least one historical filtering result to the value in second buffer, generate current filtering result, and this current filtering result is sent first buffer of described signal threshold value control unit and controls numeric storage unit;
Also comprise after the described step D: step e, the control numeric storage unit provides historical filtering result to described number of signals value filtering unit; After receiving described first enable signal, will obtain described current filtering result and it will be deposited from described number of signals value filtering module, after the update signal of receiving the control signal generation unit, utilize described current filtering result to upgrade described historical filtering result.
14. RF control method according to claim 13 is characterized in that, described step C comprises:
Step C1, the filtering result of the last time that the first buffer buffer memory obtains from filtering subelement described in the described number of signals value filtering unit;
Step C2, signal errors counting deposit subelement described difference are counted greater than the number of times of described default signal numerical value compare threshold;
Step C3, the difference computation subunit is calculated the difference of last filtering result in described current demand signal information and described first buffer;
Step C4, if described difference is greater than the value of default signal numerical value compare threshold and described signal errors counter register during less than default signal errors count threshold, relatively subelement notifies described signal errors counter register to upgrade, transmission second not enable signal to control signal generation enables the unit, the value of second buffer in the described number of signals value filtering unit is not upgraded.
15. RF control method according to claim 14 is characterized in that, also comprises after the described step C3:
Step C4 ', if described difference is greater than the value of described signal numerical value compare threshold and described signal errors counter register during more than or equal to described signal errors count threshold, the described relatively subelement of described signal threshold value control unit notifies described signal errors counter register to make zero, send second enable signal to control signal generation and enable the unit, utilize current demand signal numerical value that the value of second buffer in the described number of signals value filtering unit is upgraded;
Step F ', behind described second enable signal that receives described signal threshold value control unit, control signal generates and enables the unit to control signal generation unit transmission " control enables " signal;
Step G ', the control signal generation unit, also be connected with the communication radio frequency module, after being used for receiving " control enables " signal of described control signal generation unit, from described control numeric storage unit, extract current filtering result and generate radio-frequency (RF) control signal, and this radio-frequency (RF) control signal is sent to the communication radio frequency module, generate update signal to controlling numeric storage unit.
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| CN110174852A (en) * | 2018-02-19 | 2019-08-27 | 韩华航空航天公司 | Store the control system of signal value |
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