CN109769293A - RRU calibrating method, device, computer equipment and storage medium - Google Patents
RRU calibrating method, device, computer equipment and storage medium Download PDFInfo
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Abstract
This application involves a kind of RRU calibrating method, device, computer equipment and storage mediums, carrier signal and point-frequency signal are used by combining in calibration process, therefore, RRU only needs once to establish cell and sends carrier signal, then point-frequency signal progress frequency sweep is sent by establishing cell, since the time that RRU establishes cell transmission point-frequency signal frequency sweep is shorter, so as to shorten entire scaled time, calibration efficiency is improved, and easy to operate.
Description
Technical field
This application involves wireless communication technology fields, more particularly to a kind of RRU calibrating method, device, computer equipment
And storage medium.
Background technique
With the continuous development of the communication technology, the type of base station products is more and more, and with their own characteristics.Distributed base station
It is traditional base station to be divided into two parts, a part is baseband processing unit (BaseBand Unit, abbreviation BBU), another portion
Dividing is Remote Radio Unit (Radio RemoteUnit, abbreviation RRU), is attached by optical fiber therebetween.Distributed base
Standing has numerous advantages such as low cost, environmental suitability are strong and engineering construction facilitates, and has obtained in 3G and 4G mobile network wide
General application.
In order to meet the covering power and operation quality requirement of base station, communication system would generally emission maximum function to base station
Rate there are certain requirements.And in actual use, the output power of multichannel RRU will receive difference between channels and extraneous ring
The influence in border and difference.Therefore, it is necessary to carry out power calibration to each channel of RRU downlink, to guarantee each channel output
The accuracy of power.
In existing technology, source signal employed in descending power calibration process is generally carrier signal or specific
For the training signal of descending power calibration, still, it is more complicated to make specific training signal, and use carrier signal, then
RRU needs repeatedly to establish cell and sends carrier signal in calibration process, so that it is long to expend the time, especially for work
For the communication system that frequency range is wider, channel width is more, scaled time is too long, causes calibration efficiency lower.
Summary of the invention
Based on this, it is necessary to calibrate the lower problem of efficiency for above-mentioned RRU, RRU calibration can be effectively improved by providing one kind
RRU calibrating method, device, computer equipment and the storage medium of efficiency.
To achieve the goals above, on the one hand, the embodiment of the present application provides a kind of RRU calibrating method, this method comprises:
The output power of detected carrier signal, wherein carrier signal is centered on RRU downlink working frequency range center frequency point
Reference carrier signal；
When the output power of carrier signal and difference the first preset condition of satisfaction of rated output power, then carrier wave letter is adjusted
Number corresponding power, and determine corresponding first power gain of the carrier signal；
Detect and calculate the average value of multiple point-frequency signal output powers in RRU downlink working frequency range；
Whether the difference of the average value and reference power that judge each point frequency output power signal meets the second preset condition；
When meeting the second preset condition, according to meet the second preset condition point-frequency signal output power average value with
The difference of reference power determines corresponding second power gain；
The corresponding final power gain of point-frequency signal is determined according to the first power gain and the second power gain.
On the other hand, the embodiment of the present application also provides a kind of RRU robot scaling equipments, comprising:
First detection module, the output power for detected carrier signal, wherein carrier signal is with RRU downlink working
Reference carrier signal centered on frequency range center frequency point；
First power gain determining module, for meeting when the output power of carrier signal and the difference of rated output power
First preset condition then adjusts the corresponding power of carrier signal, and determines corresponding first power gain of the carrier signal；
Second detection module, for detecting and calculating the flat of multiple point-frequency signal output powers in RRU downlink working frequency range
Mean value；
Whether judgment module, average value and the difference of reference power for judging each point frequency output power signal meet
Two preset conditions；
Second power gain determining module is used for when meeting the second preset condition, according to the second preset condition of satisfaction
The average value of point-frequency signal output power determines corresponding second power gain with the difference of reference power；
Final power gain determining module, for determining point-frequency signal pair according to the first power gain and the second power gain
The final power gain answered.
Another aspect, the embodiment of the present application provide a kind of computer equipment, including memory and processor, wherein deposit
The step of reservoir is stored with computer program, and processor realizes method as described above when executing computer program.
In another aspect, the embodiment of the present application provides a kind of computer readable storage medium, it is stored thereon with computer journey
The step of sequence, the computer program realizes method as described above when being executed by processor.
Above-mentioned RRU calibrating method, device, computer equipment and storage medium, by combining in calibration process using load
Wave signal and point-frequency signal, therefore, RRU only need once to establish cell and send carrier signal, are then sent by establishing cell
Point-frequency signal carries out frequency sweep, since the time that RRU establishes cell transmission point-frequency signal frequency sweep is shorter, so as to shorten entire
Scaled time improves calibration efficiency, and easy to operate.
Detailed description of the invention
Fig. 1 is the flow diagram of RRU calibrating method in one embodiment；
Fig. 2 is the flow diagram of RRU calibrating method in another embodiment；
Fig. 3 is the flow diagram of RRU calibrating method in further embodiment；
Fig. 4 is the structural block diagram of RRU robot scaling equipment in one embodiment；
Fig. 5 is the internal structure chart of computer equipment in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
In order to solve the problems, such as that RRU calibrates low efficiency, the embodiment of the present application provides a kind of RRU calibrating method, this method
For realizing the calibration of RRU Automatic-descending, as shown in Figure 1, including the following steps:
Step 102, the output power of detected carrier signal.
In the present embodiment, after system electrification, BBU issues carrier signal, wherein carrier signal is with RRU downlink working
Reference carrier signal centered on frequency range center frequency point, as long as meeting condition, which can be the carrier wave of arbitrary disposition
Signal both can be used for calibrating, and can also be used as other purposes.RRU is then established centered on downlink working frequency range center frequency point
Cell, RRU robot scaling equipment then detects the output power of the current carrier signal in each channel RRU.
In a particular embodiment, in order to guarantee obtain each channel current carrier signal output power benchmark phase
Together, before the output power of detected carrier signal, first the analog-gain value to channel each in RRU and digital gain value are carried out
Initialization.Specifically, i.e., by the pad value and FPGA (Field- of channel analogy variable gain amplifier each in RRU
Programmable Gate Array, field programmable gate array) digital gain value of base band data processing module is set as phase
Same default value, so that the output power in each channel of complete machine and the difference of rated output power are maintained at a certain range
It is interior.
Step 104, it when the difference of the output power of carrier signal and rated output power the first preset condition of satisfaction, then adjusts
The corresponding power of whole carrier signal, and determine corresponding first power gain of carrier signal.
In the present embodiment, in order to guarantee the accuracy of auto-scaling, in conjunction with the pad value of analogue variable gain amplifier
Precision and FPGA base band data processing module digital gain value precision, certain threshold value can be preset respectively, and
The first preset condition is configured to according to the various combination of threshold value.
RRU robot scaling equipment then calculates the output work of the current carrier signal in each channel according to the testing result of above-mentioned steps
The difference of rate and RRU rated output power, and in the case where the difference meets the first preset condition, adjustment carrier signal is corresponding
Power, while determining corresponding first power gain of carrier signal.
Step 106, detect and calculate the average value of multiple point-frequency signal output powers in RRU downlink working frequency range.
BBU issues point-frequency signal frequency sweep, and RRU establishes the cell for working in downlink working frequency range, and RRU robot scaling equipment then detects
The average value of the output power of multiple point-frequency signals in RRU downlink working frequency range.Wherein, point-frequency signal is in RRU downlink working
The signal of frequency sweep is carried out in frequency range with certain channel width and predeterminated frequency interval, the output power of each point-frequency signal is averaged
Value then refer in respective channels bandwidth with predeterminated frequency interval carry out the sum of output power signal of frequency sweep in the channel strip
The ratio between the number of signal of frequency sweep is carried out in wide.
In a particular embodiment, in order to guarantee each channel obtain the output power of current point-frequency signal benchmark it is identical,
Before the output power for obtaining current point-frequency signal, analog-gain value and digital gain value that can first to each channel RRU
It is initialized again.Specifically, by the pad value and FPGA base band data of each channel analogy variable gain amplifier of RRU
The digital gain value of processing module is again set at identical default value, makes the output power and rated output in each channel of complete machine
The difference of power is kept in a certain range.
Step 108, it is pre- whether the difference of the average value and reference power that judge each point frequency output power signal meets second
If condition.If satisfied, thening follow the steps 110, no to then follow the steps 114, calibration error terminates.
Step 110, according to the difference of the average value for the point-frequency signal output power for meeting the second preset condition and reference power
Value determines corresponding second power gain.
Wherein, reference power can be obtained according to reference carrier signal.Specifically, according to reference carrier signal calculating benchmark
The average value of the output power of multiple point-frequency signals in carrier signal frequency range, the average value are then benchmark power.
In the present embodiment, in order to guarantee that the accuracy of auto-scaling may be used also on the basis of above-mentioned first preset condition
To preset the second preset condition.RRU robot scaling equipment then calculates the average value and reference power of each point frequency output power signal
Difference, and difference meet the second preset condition when, determine the second power gain of corresponding point-frequency signal.
Step 112, the corresponding final power gain of point-frequency signal is determined according to the first power gain and the second power gain.
In the present embodiment, the precision of the second preset condition and the digital gain value of FPGA base band data processing module has
It closes, therefore, when the difference of the average value of point-frequency signal output power and reference power meets the required precision of FPGA, then it represents that
The transmission power of downlink has reached calibration and has required, therefore, according to corresponding second power gain of point-frequency signal and above-mentioned
Sum of the two is determined as the final power gain of corresponding point-frequency signal, to complete by the first power gain determined in step
Calibration.It should be noted that final power gain be also the carrier signal of center frequency point and bandwidth where the point-frequency signal most
Whole power gain namely last the calibration results are all suitable for carrier signal and point-frequency signal or other signals, as long as RRU is just
It is often that the signal sent is applicable in when work.
Step 114, calibration error terminates.
If the output power of carrier signal and the difference of rated output power are unsatisfactory for the first preset condition, alternatively, point
The average value of frequency output power signal and the difference of reference power are unsatisfactory for the second preset condition, then it represents that the transmitting of respective links
Power does not meet calibration and requires, therefore terminates to calibrate.
Above-mentioned RRU calibrating method, combines by using carrier signal with point-frequency signal in calibration process, therefore, RRU
It only needs once to establish cell and sends carrier signal, then carry out frequency sweep by establishing cell transmission point-frequency signal, due to
The time that RRU establishes cell transmission point-frequency signal frequency sweep is shorter, so as to shorten entire scaled time, improves calibration efficiency,
And it is easy to operate.
In one embodiment, as shown in Fig. 2, above-mentioned steps 104, when the output power and rated output function of carrier signal
The difference of rate meets the first preset condition, then adjusts the corresponding power of carrier signal, and determines corresponding first function of carrier signal
Rate gain, can specifically include following steps:
Step 200, the output power of carrier signal and the difference of rated output power are calculated.
Step 202, when the difference of the output power of carrier signal and rated output power is not less than preset first threshold value.Then
Sequence executes step 204.
Step 204, the power difference of carrier signal is determined according to difference.
Step 206, the power of carrier signal is adjusted according to the power difference of carrier signal, and records adjustment number.
Step 208, judge to adjust whether number is not more than the first preset times, if so then execute step 210, otherwise execute
Step 226.
Step 210, need are judged whether according to the difference of the watt level of carrier signal adjusted and rated output power
Continue to adjust.
In the present embodiment, it is preset when the watt level of carrier signal adjusted and the difference of rated output power are less than
First threshold, it is determined that need not continue to adjust, to continue to execute subsequent step.When the power of carrier signal adjusted is big
The small difference with rated output power is not less than preset first threshold value, it is determined that needs continue to adjust, and therefore, return to step
206, and then continue to be adjusted the power of carrier signal according to the difference of the two, and record adjustment number, until the two it
Between difference be less than preset first threshold value, and adjust number be not more than the first preset times, then stop adjusting, execute subsequent step
Suddenly.
Step 212, if adjustment number is not more than preset times, and difference is less than preset first threshold value, then according to adjustment
Number and difference determine corresponding first analog-gain value of carrier signal.
After determining the first analog-gain value, further work can also be determined according to current size of the difference between the two
Make process, for example, it is default then further to judge whether the difference is less than when difference between the two is less than preset first threshold value
Second threshold (step 228) judges whether the difference is not more than default second threshold (step 214), thus according to corresponding
As a result follow-up process is executed, detailed process is as follows.
Step 214, when the difference of the output power of carrier signal and rated output power is less than preset first threshold value and not
Less than default second threshold.Then sequence executes step 216.
Step 216, the power difference of carrier signal is determined according to difference.
Step 218, the power of carrier signal is adjusted according to the power difference of carrier signal, and records adjustment number.
Step 220, judge to adjust whether number is not more than the second preset times, if so then execute step 222, otherwise execute
Step 226.
Step 222, need are judged whether according to the difference of the watt level of carrier signal adjusted and rated output power
Continue to adjust.
In the present embodiment, it is preset when the watt level of carrier signal adjusted and the difference of rated output power are less than
When second threshold, it is determined that need not continue to adjust, to continue to execute subsequent step.When the power of carrier signal adjusted
Size and the difference of rated output power be less than preset first threshold value and not less than it is default through two threshold values when, it is determined that need to continue
Adjustment, therefore, returns to step 218, and then continue to be adjusted the power of carrier signal according to the difference of the two, and remember
Record adjustment number presets second threshold until difference between the two is less than, and adjusts number and be not more than the second preset times, then
Stop adjustment, executes subsequent step.
Step 224, if adjustment number is not more than preset times, and difference is less than default second threshold, then according to adjustment
Number and difference determine corresponding first digital gain value of carrier signal.
Step 226, calibration error terminates process.
Step 228, second threshold is preset when the difference of the output power of carrier signal and rated output power is less than, then held
Row step 2230.
Step 230, into downstream.
Wherein, first threshold is related with the precision of the pad value of analogue variable gain amplifier, second threshold and FPGA base
The precision of digital gain value with data processing module is related, and second threshold is less than first threshold.It is specific below by way of one
Embodiment further illustrate above-mentioned process.
As an example it is assumed that auto-scaling is carried out according to descending power of the above method to RRU, if the RRU is that work exists
The eight channel TD-LTE RRU of 1880MHz~1920MHz.When system electrification enters auto-scaling state, under Base Band Unit BBU
Originated signal is the source signal of ETM11 carrier signal, and RRU establishes the 5MHz centered on working frequency range center frequency point 1900MHz
Cell.RRU robot scaling equipment then detects the output power of current carrier signal.In a particular embodiment, in order to guarantee each channel
The benchmark for obtaining the output power of current carrier signal is identical, in the output power of RRU robot scaling equipment detection current carrier signal
Before, the analog-gain value and digital gain value in each channel of system are initialized.
After RRU robot scaling equipment detects the output power of current carrier signal, and calculate the current carrier signal in each channel
Output power and RRU specified output power difference.It, can be variable in conjunction with simulation in order to guarantee the accuracy of auto-scaling
The precision of the pad value of gain amplifier presets first threshold, and combines the digital gain of FPGA base band data processing module
The precision of value presets second threshold, wherein first threshold and second threshold can be step value, and second threshold is less than
One threshold value.Assuming that pre-set first threshold is 0.5 in the present embodiment, second threshold 0.1.
RRU robot scaling equipment is then according to the difference of calculating power gain corresponding with the relationship of threshold value adjustment carrier signal.Tool
Body, when difference is not less than first threshold, then it represents that the transmission power in respective links, which is not up to calibrated, to be required, therefore, root
Determine that the power difference of carrier signal namely the difference can be used as the power difference of carrier signal, and then basis according to the difference
Power difference adjusts the power of carrier signal, and records adjustment number.In the specific implementation, it can be adjusted using counter
The record of number.
It repeats the above steps and detects the output power of carrier signal adjusted, and it is specified with RRU to calculate the output power
Output power difference, and judged again.And judgement of the increase to adjustment number, when adjustment number is greater than preset times
When, show that complete machine is problematic, to terminate to calibrate process.If adjusting number is not more than preset times, and difference is less than default
First threshold then determines corresponding first analog-gain value of carrier signal according to adjustment number and difference.Specifically, carrier wave is believed
Number corresponding first analog-gain value can be adjustment number and the step value i.e. product of first threshold.
In above-mentioned deterministic process, if the difference of the output power of carrier signal and rated output power is less than default the
One threshold value and not less than default second threshold, then determine the power difference of carrier signal, and according to power difference tune according to difference
The power of whole carrier signal, and record adjustment number.
It equally repeats the above steps and detects the output power of carrier signal adjusted, and calculate the output power and RRU
The difference of specified output power, and judged again.Increase the judgement to adjustment number simultaneously, if adjustment number is greater than
Preset times, then it represents that calibration error terminates calibration process.If adjusting number is not more than preset times, and difference is less than in advance
If second threshold, then it represents that the output power of carrier signal adjusted can satisfy calibration and require, therefore, according to adjustment number
And difference determines corresponding first digital gain value of carrier signal.Specifically, corresponding first digital gain value of carrier signal
It can be adjustment number and the step value i.e. product of second threshold.
In one embodiment, as Fig. 3 shows, above-mentioned steps 110 are exported according to the point-frequency signal for meeting the second preset condition
The average value of power determines corresponding second power gain with the difference of reference power, can specifically include following steps:
It should be noted that in the present embodiment, the second preset condition is equally to combine analogue variable gain amplifier
The precision of the digital gain value of the precision and FPGA base band data processing module of pad value, and pre-set threshold value respectively, and
The condition constructed according to the various combination of threshold value.Meanwhile the accuracy in order to guarantee auto-scaling, in above-mentioned first threshold and
On the basis of second threshold, third threshold value can also be preset, and third threshold value is greater than first threshold.
Step 302, the average value of each point-frequency signal output power and the difference of reference power are obtained.
Wherein, reference power can be obtained according to reference carrier signal.Specifically, according to reference carrier signal calculating benchmark
The average value of the output power of multiple point-frequency signals in carrier signal frequency range, the average value are then benchmark power.Point-frequency signal is
The signal of frequency sweep is carried out with certain channel width and predeterminated frequency interval in RRU downlink working frequency range, each point-frequency signal
The average value of output power then refer in respective channels bandwidth with predeterminated frequency interval carry out frequency sweep output power signal it
With the ratio between the number of signal with the progress frequency sweep in the channel width.
Or its principle is further illustrated with above-described embodiment, in a particular embodiment, Originated signal under Base Band Unit BBU
For the source signal of point-frequency signal, RRU establishes two 20MHz cells that channel center's frequency point is 1890MHz and 1910MHz respectively.
Frequency sweep, such as interval 1MHz are carried out to point-frequency signal by configuring, obtain multiple point-frequency signal output powers.By 1881MHz,
The point-frequency signal output power of 1882MHz ... 1899MHz is denoted as m1, m2 respectively ... m19, by 1901MHz,
The point-frequency signal output power of 1902MHz ... 1919MHz is denoted as n1, n2 respectively ... n19.In order to guarantee that each channel obtains
The benchmark of the output power of current point-frequency signal is identical, first every to system before the output power for obtaining current point-frequency signal
The analog-gain value and digital gain value in a channel are initialized again.Will each channel variable gain amplifier decaying
The digital gain value of value and FPGA base band data processing module is set as identical default value.
Specifically, what is established is to be with working frequency range center frequency point 1900MHz since RRU is when sending carrier signal
The 5MHz cell at center.Therefore, can use point-frequency signal 1898MHz, 1899MHz, 1901MHz in the carrier bandwidths and
1902MHz, corresponding output power are respectively m18, m19, n1, n2, calculate corresponding reference power P0For (m18+m19+n1+
n2)/4。
The output power of point-frequency signal is illustrated by taking carrier bandwidths 20MHz and carrier bandwidths 10MHz as an example separately below
Average value, specifically, be 20MHz with channel width, determine its corresponding center frequency point be respectively 1890MHz, 1900MHz and
1910MHz is 10MHz with channel width, determines that corresponding center frequency point is respectively 1885MHz, 1900MHz and 1915MHz.
Then channel width is 20MHz, is spaced 1MHz, and center frequency point is point-frequency signal in the channel width of 1890MHz
1881MHz, 1882MHz ... 1899MHz, corresponding output power are respectively m1, m2 ... m19, then the point-frequency signal exports
The average value P of power201=(m1+m2+ ...+m19)/19；Channel width is 20MHz, and center frequency point is 1900MHz channel width
Interior point-frequency signal 1891MHz, 1892MHz ... 1899MHz, 1901MHz, 1902MHz ... 1909MHz, corresponding output work
Rate is respectively m11, m12 ... m19, n1, n2 ... n9, the average value P of corresponding point-frequency signal output power202=(m11+
m12+…+m19+n1+n2+……+n9)/18；Channel width is 20MHz, and center frequency point is point frequency in 1910MHz channel width
Signal 1911MHz, 1912MHz ... 1919MHz, corresponding output power are respectively n1, n2 ... n19, corresponding point frequency
The average value P of output power signal203=(n1+n2+ ...+n19)/19.Then according to the average value of each point frequency output power signal
P201、P202And P203Calculate separately itself and reference power P0Difference.
Channel width be 10MHz, interval 1MHz, center frequency point be 1885MHz channel width in point-frequency signal 1881MHz,
1882MHz ... 1889MHz, corresponding output power be respectively m1, m2 ... m9, then the point-frequency signal output power is averaged
Value P101=(m1+m2+ ...+m9)/9；Channel width is 10MHz, and center frequency point is point-frequency signal in 1900MHz channel width
1896MHz, 1897MHz, 1898MHz, 1899MHz, 1901MHz, 1902MHz, 1903MHz and 1904MHz, corresponding output work
Rate is respectively m16, m17, m18, m19, n1, n2, n3, n4, then the average value P of the point-frequency signal output power102=(m16+m17
+m18+m19+n1+n2+n3+n4)/8；Channel width is 10MHz, and center frequency point is point-frequency signal in 1915MHz channel width
1911MHz, 1912MHz ... 1919MHz, corresponding output power are respectively n11, n12 ... n19, then the point-frequency signal is defeated
The average value P of power out103=(n11+n12+ ...+n19)/9.Then according to the average value P of each point frequency output power signal101、P102
And P103Calculate separately itself and reference power P0Difference.
Step 304, when the difference be not less than third threshold value, then follow the steps 318.
Step 306, when the difference is greater than preset first threshold value and is less than default third threshold value.Then follow the steps 308.
In the present embodiment, when the difference of the average value of point-frequency signal output power and reference power meets the second default item
Part, the i.e. difference are less than default third threshold value, then it represents that the transmission power of respective links can be by adjusting complying with calibration
It is required that then showing that complete machine is problematic when the difference is greater than or equal to default third threshold value, terminate to calibrate thereby executing step 318
Process.
Step 308, the maximum integer times part for determining preset first threshold value in difference is the second mould of corresponding point-frequency signal
Quasi- yield value.
In the present embodiment, since first threshold is determined according to the precision of the pad value of analogue variable gain amplifier
, therefore, if the difference is greater than preset first threshold value and is less than default third threshold value, then it represents that can be by adjusting its correspondence
Analog gain and comply with calibration require.Again since the precision of the pad value by variable gain amplifier is influenced, adjusting
The limited extent adjusted during whole, so as to determine maximum adjustment number by difference and first threshold, and will be maximum
Number and step value, that is, first threshold product the maximum integer times part of first threshold (namely in difference) are adjusted as point frequency
Corresponding second analog-gain value of signal.
Step 310, when difference is greater than default second threshold and is not more than preset first threshold value.Then follow the steps 312.
Step 312, determine that difference is the second digital gain value of corresponding point-frequency signal.
If the difference is greater than default second threshold and is not more than preset first threshold value, then it represents that can be right by adjusting its
The digital gain answered and comply with calibration and require.Therefore, can to take the difference as point-frequency signal in the present embodiment corresponding
Second digital gain value.
Step 314, when difference is not more than default second threshold, if so, thening follow the steps 316.
Step 316, calibration is completed.
When difference is less than or equal to default second threshold, then it represents that the transmission power of respective links meets calibration and requires,
Therefore calibration is completed, can terminate to calibrate.
Step 318, calibration error terminates process.
In one embodiment, after completing calibration according to above-mentioned process, that is, it can determine each point frequency signal (system working frequency range
Frequency output signal is put in any bandwidth) corresponding final power gain.Specifically, the practical analog gain determined to point-frequency signal
When, need to consider simultaneously above-mentioned first analog-gain value and the second analog-gain value, i.e., it finally should be with the first analog-gain value
And second the sum of analog-gain value the analog gain of corresponding point-frequency signal is adjusted.The practical number determined to point-frequency signal
When word gain, it is also desirable to while considering above-mentioned first digital gain value and the second digital gain value, i.e., it finally should be with the first number
The sum of word yield value and the second digital gain value is adjusted the digital gain of corresponding point-frequency signal.
The present processes are further illustrated below by way of a specific embodiment, specifically, assuming that a certain RRU is work
Make the eight channel TD-LTE RRU in 1880MHz~1920MHz, the present embodiment is by taking the auto-scaling in channel a certain in RRU as an example
It is illustrated.When system electrification enters auto-scaling state, Originated signal is ETM11 carrier signal under Base Band Unit BBU
Source signal, RRU establish the 5MHz cell centered on working frequency range center frequency point 1900MHz, the i.e. center frequency point of carrier signal
For 1900MHz, bandwidth of operation 5MHz.RRU robot scaling equipment then detects the output power of current carrier signal, if current output work
Rate is 29.8dBm (decibel milliwatt), and rated output power is 40dBm, then its difference is 10.2dB (decibel) (40-29.8), because
This is adjusted according to difference and determines corresponding first power gain of carrier signal.
Assuming that first threshold is 0.5, second threshold 0.1 after being then adjusted according to above-mentioned rule, can determine carrier wave
Corresponding first analog-gain value of signal is 10dB, and the first digital gain value is 0.2dB.
It is detecting and is calculating in RRU downlink working frequency range before the average value of multiple point-frequency signal output powers, first really
Determine reference power, i.e., (center frequency point 1900MHz, bandwidth of operation 5MHz) output signal in center frequency point carrier channel bandwidth
Average value, if by detect and be calculated the reference power be 20dBm, and in any bandwidth of working frequency range (such as center frequency
Point 1885MHz, bandwidth of operation 10MHz) average value of frequency output signal is put for 19.2dBm, then according to difference 0.8dB (20-
19.2) the second power gain in any bandwidth of working frequency range is adjusted.Assuming that third threshold value is 3, can be obtained according to above-mentioned rule
It is 0.5dB to the second analog-gain value, the second digital gain value is 0.3dB.
The first power gain and the second power gain are needed while considered when due to being finally adjusted, in
The point-frequency signal of heart frequency point 1885MHz, bandwidth of operation 10MHz, the final analog gain of corresponding channel are the first analog gain
The sum of value 10dB and the second analog-gain value 0.5dB, i.e. 10.5dB (10+0.5)；Its final digital gain is the first digital gain
The sum of value 0.2dB and the second digital gain value 0.3dB, i.e. 0.5dB (0.2+0.3).
For the point frequency output signal of different center frequency point and bandwidth of operation, or it is different channel, can led to
It crosses the above method and realizes auto-scaling.It is understood that being 1900MHz, bandwidth of operation 5MHz for system centre frequency point
Reference signal, due to be when determining corresponding second power gain as benchmark, it is corresponding second simulation increase
Beneficial value and the second digital gain value are 0dB.
It can quickly be obtained using the above-mentioned RRU calibrating method of the present embodiment by combining carrier signal and point-frequency signal
The corresponding yield value of each any working frequency points of carrier bandwidths, greatly shortens scaled time, particularly with multichannel RRU's
Calibration, so that calibration efficiency is substantially improved.
It should be understood that although each step in the flow chart of Fig. 1-Fig. 3 is successively shown according to the instruction of arrow,
It is these steps is not that the inevitable sequence according to arrow instruction successively executes.Unless expressly stating otherwise herein, these steps
There is no stringent sequences to limit for rapid execution, these steps can execute in other order.Moreover, in Fig. 1-Fig. 3 extremely
Few a part of step may include that perhaps these sub-steps of multiple stages or stage are not necessarily same to multiple sub-steps
Moment executes completion, but can execute at different times, and the execution sequence in these sub-steps or stage is also not necessarily
It successively carries out, but in turn or can be handed over at least part of the sub-step or stage of other steps or other steps
Alternately execute.
In one embodiment, the embodiment of the present application also provides a kind of RRU robot scaling equipments, as shown in figure 4, the device packet
It includes: first detection module 402, the first adjustment module 404, the second detection module 406 and second adjustment module 408, wherein
First detection module 402, the output power for detected carrier signal, wherein carrier signal is with RRU downlink work
Make the reference carrier signal centered on frequency range center frequency point；
First power gain determining module 404, for when the output power of carrier signal and the difference of rated output power
Meet the first preset condition, then adjust the corresponding power of carrier signal, and determines corresponding first power gain of carrier signal；
Second detection module 406, for detecting and calculating multiple point-frequency signal output powers in RRU downlink working frequency range
Average value；
Judgment module 408, for judge each point frequency output power signal average value and reference power difference it is whether full
The second preset condition of foot；
Second power gain determining module 410, for when meeting the second preset condition, according to meeting the second preset condition
The average value of point-frequency signal output power determine corresponding second power gain with the difference of reference power；
Final power gain determining module 412, for determining that point frequency is believed according to the first power gain and the second power gain
Number corresponding final power gain.
In one embodiment, above-mentioned RRU robot scaling equipment further includes initialization module 414, which is used for
Before first detection module 402 and the work of the second detection module 406, to the analog-gain value and data gain in channel each in RRU
Value is initialized.
Specific about RRU robot scaling equipment limits the restriction that may refer to above for RRU calibrating method, herein no longer
It repeats.Modules in above-mentioned RRU robot scaling equipment can be realized fully or partially through software, hardware and combinations thereof.It is above-mentioned
Each module can be embedded in the form of hardware or independently of in the processor in computer equipment, can also be stored in a software form
In memory in computer equipment, the corresponding operation of the above modules is executed in order to which processor calls.
In one embodiment, a kind of computer equipment is provided, which can be server, internal junction
Composition can be as shown in Figure 5.The computer equipment include by system bus connect processor, memory, network interface and
Database.Wherein, the processor of the computer equipment is for providing calculating and control ability.The memory packet of the computer equipment
Include non-volatile memory medium, built-in storage.The non-volatile memory medium is stored with operating system, computer program and data
Library.The built-in storage provides environment for the operation of operating system and computer program in non-volatile memory medium.The calculating
The database of machine equipment is used to store the data such as the output power of detection.The network interface of the computer equipment is used for and outside
Terminal passes through network connection communication.To realize a kind of RRU calibrating method when the computer program is executed by processor.
It will be understood by those skilled in the art that structure shown in Fig. 5, only part relevant to application scheme is tied
The block diagram of structure does not constitute the restriction for the computer equipment being applied thereon to application scheme, specific computer equipment
It may include perhaps combining certain components or with different component layouts than more or fewer components as shown in the figure.
In one embodiment, a kind of computer equipment, including memory and processor are provided, is stored in memory
Computer program, the processor perform the steps of when executing computer program
The output power of detected carrier signal, wherein carrier signal is centered on RRU downlink working frequency range center frequency point
Reference carrier signal；
When the output power of carrier signal and difference the first preset condition of satisfaction of rated output power, then carrier wave letter is adjusted
Number corresponding power, and determine corresponding first power gain of carrier signal；
Detect and calculate the average value of multiple point-frequency signal output powers in RRU downlink working frequency range；
Whether the difference of the average value and reference power that judge each point frequency output power signal meets the second preset condition；
When meeting the second preset condition, according to meet the second preset condition point-frequency signal output power average value with
The difference of reference power determines corresponding second power gain；
The corresponding final power gain of point-frequency signal is determined according to the first power gain and the second power gain.
In one embodiment, before the output power of detected carrier signal, further includes: the simulation to channel each in RRU
Yield value and data yield value are initialized；It then detects and calculates multiple point-frequency signal output works in RRU downlink working frequency range
Before the average value of rate, further includes: initialized again to the analog-gain value and data yield value in channel each in RRU.
In one embodiment, the first power gain include the first analog-gain value, when carrier signal output power with
The difference of rated output power meets the first preset condition, then adjusts the corresponding power of carrier signal, and determines the carrier wave letter
Number corresponding first power gain, comprising: if the difference of the output power of carrier signal and rated output power is not less than default
First threshold determines the power difference of carrier signal according to difference；Carrier signal is adjusted according to the power difference of carrier signal
Power, and record adjustment number；It repeats the above steps, if adjustment number is not more than preset times, and difference is less than default first
Threshold value then determines corresponding first analog-gain value of carrier signal according to adjustment number and difference.
In one embodiment, the first power gain include the first digital gain value, when carrier signal output power with
The difference of rated output power meets the first preset condition, then adjusts the corresponding power of carrier signal, and determines the carrier wave letter
Number corresponding first power gain, comprising: if the difference of the output power of carrier signal and rated output power is less than default the
One threshold value and not less than default second threshold, wherein default second threshold is less than preset first threshold value, determines carrier wave according to difference
The power difference of signal；The power of carrier signal is adjusted according to the power difference of carrier signal, and records adjustment number；In repetition
Step is stated, if adjustment number is not more than preset times, and difference is less than default second threshold, then according to adjustment number and difference
Determine corresponding first digital gain value of carrier signal.
In one embodiment, the second power gain includes the second analog-gain value, when meeting the second preset condition, root
Corresponding second function is determined with the difference of reference power according to the average value of point-frequency signal output power for meeting the second preset condition
Rate gain includes: to obtain the average value of each point-frequency signal output power and the difference of reference power；If difference is greater than default the
One threshold value and it is less than default third threshold value, wherein default third threshold value is greater than preset first threshold value, it is determined that the is preset in difference
The maximum integer of one threshold value times part is the second analog-gain value of corresponding point-frequency signal.
In one embodiment, the second power gain includes the second digital gain value, when meeting the second preset condition, root
Corresponding second function is determined with the difference of reference power according to the average value of point-frequency signal output power for meeting the second preset condition
Rate gain, comprising: when difference is greater than default second threshold and is not more than preset first threshold value, it is determined that difference is that corresponding points frequency is believed
Number the second digital gain value.
In one embodiment, the corresponding final function of point-frequency signal is determined according to the first power gain and the second power gain
Rate gain, comprising: the corresponding final analog gain of point-frequency signal is determined according to the first analog-gain value and the second analog-gain value
Value；The corresponding final digital gain value of point-frequency signal is determined according to the first digital gain value and the second digital gain value.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
Machine program performs the steps of when being executed by processor
The output power of detected carrier signal, wherein carrier signal is centered on RRU downlink working frequency range center frequency point
Reference carrier signal；
When the output power of carrier signal and difference the first preset condition of satisfaction of rated output power, then carrier wave letter is adjusted
Number corresponding power, and determine corresponding first power gain of carrier signal；
Detect and calculate the average value of multiple point-frequency signal output powers in RRU downlink working frequency range；
Whether the difference of the average value and reference power that judge each point frequency output power signal meets the second preset condition；
When meeting the second preset condition, according to meet the second preset condition point-frequency signal output power average value with
The difference of reference power determines corresponding second power gain；
The corresponding final power gain of point-frequency signal is determined according to the first power gain and the second power gain.
In one embodiment, before the output power of detected carrier signal, further includes: the simulation to channel each in RRU
Yield value and data yield value are initialized；It then detects and calculates multiple point-frequency signal output works in RRU downlink working frequency range
Before the average value of rate, further includes: initialized again to the analog-gain value and data yield value in channel each in RRU.
In one embodiment, the first power gain include the first analog-gain value, when carrier signal output power with
The difference of rated output power meets the first preset condition, then adjusts the corresponding power of carrier signal, and determines the carrier wave letter
Number corresponding first power gain, comprising: if the difference of the output power of carrier signal and rated output power is not less than default
First threshold determines the power difference of carrier signal according to difference；Carrier signal is adjusted according to the power difference of carrier signal
Power, and record adjustment number；It repeats the above steps, if adjustment number is not more than preset times, and difference is less than default first
Threshold value then determines corresponding first analog-gain value of carrier signal according to adjustment number and difference.
In one embodiment, the first power gain include the first digital gain value, when carrier signal output power with
The difference of rated output power meets the first preset condition, then adjusts the corresponding power of carrier signal, and determines the carrier wave letter
Number corresponding first power gain, comprising: if the difference of the output power of carrier signal and rated output power is less than default the
One threshold value and not less than default second threshold, wherein default second threshold is less than preset first threshold value, determines carrier wave according to difference
The power difference of signal；The power of carrier signal is adjusted according to the power difference of carrier signal, and records adjustment number；In repetition
Step is stated, if adjustment number is not more than preset times, and difference is less than default second threshold, then according to adjustment number and difference
Determine corresponding first digital gain value of carrier signal.
In one embodiment, the second power gain includes the second analog-gain value, when meeting the second preset condition, root
Corresponding second function is determined with the difference of reference power according to the average value of point-frequency signal output power for meeting the second preset condition
Rate gain includes: to obtain the average value of each point-frequency signal output power and the difference of reference power；If difference is greater than default the
One threshold value and it is less than default third threshold value, wherein default third threshold value is greater than preset first threshold value, it is determined that the is preset in difference
The maximum integer of one threshold value times part is the second analog-gain value of corresponding point-frequency signal.
In one embodiment, the second power gain includes the second digital gain value, when meeting the second preset condition, root
Corresponding second function is determined with the difference of reference power according to the average value of point-frequency signal output power for meeting the second preset condition
Rate gain, comprising: when difference is greater than default second threshold and is not more than preset first threshold value, it is determined that difference is that corresponding points frequency is believed
Number the second digital gain value.
In one embodiment, the corresponding final function of point-frequency signal is determined according to the first power gain and the second power gain
Rate gain, comprising: the corresponding final analog gain of point-frequency signal is determined according to the first analog-gain value and the second analog-gain value
Value；The corresponding final digital gain value of point-frequency signal is determined according to the first digital gain value and the second digital gain value.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer
In read/write memory medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein,
To any reference of memory, storage, database or other media used in each embodiment provided herein,
Including non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of RRU calibrating method, which is characterized in that the described method includes:
The output power of detected carrier signal, the carrier signal are the bases centered on RRU downlink working frequency range center frequency point
Quasi- carrier signal；
When the difference of the output power of the carrier signal and rated output power meets the first preset condition, then described in adjustment
The corresponding power of carrier signal, and determine corresponding first power gain of the carrier signal；
Detect and calculate the average value of multiple point-frequency signal output powers in RRU downlink working frequency range；
Whether the difference of the average value and reference power that judge each point frequency output power signal meets the second preset condition；
When meeting the second preset condition, according to the average value and benchmark of the point-frequency signal output power for meeting the second preset condition
The difference of power determines corresponding second power gain；
The corresponding final power gain of the point-frequency signal is determined according to first power gain and the second power gain.
2. RRU calibrating method according to claim 1, which is characterized in that the output power of the detected carrier signal it
Before, further includes:
The analog-gain value and data yield value in each channel in the RRU are initialized；
The detection simultaneously calculates in RRU downlink working frequency range before the average value of multiple point-frequency signal output powers, further includes:
The analog-gain value and data yield value in each channel in the RRU are initialized again.
3. RRU calibrating method according to claim 1 or 2, which is characterized in that first power gain includes the first mould
Quasi- yield value, if the difference of the output power of the carrier signal and rated output power meets the first preset condition,
The corresponding power of the carrier signal is adjusted, and determines corresponding first power gain of the carrier signal, comprising:
If the output power of the carrier signal and the difference of rated output power are not less than preset first threshold value, according to the difference
Value determines the power difference of the carrier signal；
The power of the carrier signal is adjusted according to the power difference of the carrier signal, and records adjustment number；
Judge whether to need to continue to adjust according to the difference of the watt level of carrier signal adjusted and rated output power, directly
It is less than first threshold to difference, and adjusts number and be not more than the first preset times, then according to the adjustment number and the difference
Value determines corresponding first analog-gain value of the carrier signal.
4. RRU calibrating method according to claim 3, which is characterized in that first power gain includes the first number
Yield value is adjusted if the difference of the output power of the carrier signal and rated output power meets the first preset condition
The corresponding power of the whole carrier signal, and determine corresponding first power gain of the carrier signal, comprising:
If the output power of the carrier signal and the difference of rated output power are less than preset first threshold value and not less than default
Second threshold, the default second threshold are less than the preset first threshold value, determine the carrier signal according to the difference
Power difference；
The power of the carrier signal is adjusted according to the power difference of the carrier signal, and records adjustment number；
Judge whether to need to continue to adjust according to the difference of the watt level of carrier signal adjusted and rated output power, directly
It is less than second threshold to difference, and adjusts number and be not more than the second preset times, then according to the adjustment number and the difference
Value determines corresponding first digital gain value of the carrier signal.
5. RRU calibrating method according to claim 4, which is characterized in that second power gain includes the second simulation
Yield value；It is described when meeting the second preset condition, be averaged according to the point-frequency signal output power for meeting the second preset condition
Value determines corresponding second power gain with the difference of reference power, includes:
Obtain the average value of each point-frequency signal output power and the difference of reference power；
If the difference is greater than the preset first threshold value and is less than default third threshold value, the default third threshold value is greater than described
Preset first threshold value, it is determined that the maximum integer of preset first threshold value described in the difference times part is corresponding point-frequency signal
Second analog-gain value.
6. RRU calibrating method according to claim 5, which is characterized in that the second power gain includes the second digital gain
Value, it is described when meeting the second preset condition, according to meet the second preset condition point-frequency signal output power average value and
The difference of reference power determines corresponding second power gain, comprising:
If the difference is greater than the default second threshold and is not more than the preset first threshold value, it is determined that the difference is pair
Answer the second digital gain value of point-frequency signal.
7. RRU calibrating method according to claim 6, which is characterized in that described according to first power gain and
Two power gains determine the corresponding final power gain of the point-frequency signal, comprising:
The corresponding final analog gain of the point-frequency signal is determined according to first analog-gain value and the second analog-gain value
Value；
The corresponding final digital gain of the point-frequency signal is determined according to first digital gain value and the second digital gain value
Value.
8. a kind of RRU robot scaling equipment characterized by comprising
First detection module, for the output power of detected carrier signal, the carrier signal is in RRU downlink working frequency range
Reference carrier signal centered on heart frequency point；
First power gain determining module, for meeting when the output power of the carrier signal and the difference of rated output power
First preset condition then adjusts the corresponding power of the carrier signal, and determines that corresponding first power of the carrier signal increases
Benefit；
Second detection module, for detecting and calculating the average value of multiple point-frequency signal output powers in RRU downlink working frequency range；
Judgment module, whether to meet second pre- for average value and the difference of reference power for judging each point frequency output power signal
If condition；
Second power gain determining module is used for when meeting the second preset condition, according to the point frequency for meeting the second preset condition
The average value of output power signal determines corresponding second power gain with the difference of reference power；
Final power gain determining module, for determining that the point frequency is believed according to first power gain and the second power gain
Number corresponding final power gain.
9. a kind of computer equipment, including memory and processor, the memory are stored with computer program, feature exists
In the step of processor realizes any one of claims 1 to 7 the method when executing the computer program.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The step of any one of claims 1 to 7 the method is realized when being executed by processor.
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