CN103916197A - Automatic-power-control word test method - Google Patents
Automatic-power-control word test method Download PDFInfo
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- CN103916197A CN103916197A CN201210592115.5A CN201210592115A CN103916197A CN 103916197 A CN103916197 A CN 103916197A CN 201210592115 A CN201210592115 A CN 201210592115A CN 103916197 A CN103916197 A CN 103916197A
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- 238000010998 test method Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012937 correction Methods 0.000 description 5
- 238000010923 batch production Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
Abstract
The invention discloses an automatic power control (APC) word test method which includes: establishing an initial APC control word table; using the initial APC control word table to test practical transmitting powers Pr<i> of different power grades of UEs; obtaining deviations Delta P<i> of the Pr<i> of the different power grades and an expected transmitting power Pe<i>; and if all of the Delta P<i> are smaller than a coefficient adjustment threshold D_th, using the initial APC control word table as an APC control word table of the UEs. The test method is capable of reducing effectively the tested APC control word number of the UEs in a mass production process so that the efficiency is improved.
Description
Technical field
The present invention relates to mobile terminal test technology, specially refer to a kind of mobile terminal (being called for short UE) radio frequency (being called for short RF) automated power control word method of testing.
Background technology
UE, before dispatching from the factory, must carry out radio frequency testing calibration, meets the requirements with the RF performance index of guaranteeing UE.Radio frequency automated power control (being called for short APC) is one of main radio-frequency performance index, and UE must will carry out the test of APC control word before dispatching from the factory, and the APC that sets up UE controls word table.
The general principle of radio frequency automated power control is that UE, according to the instruction of network terminal, according to progressively Modulating Power grade of certain step-length, adjusts to by RF transmitting power the performance number that network terminal is expected.The UE of prior art realizes radio-frequency power level adjustment by APC control word:
An APC is set in UE and controls word table, APC controls in word table and has stored the corresponding APC control word of each power grade, the corresponding APC control word of each power grade.In the time carrying out the control of radio frequency automated power, the power control instruction that UE sends according to network terminal is selected suitable APC control word, controls RF chip according to corresponding power grade emitting radio frequency signal.
The test of automated power control word is exactly the actual radio frequency transmitting power in the time using each APC control word by test UE, is the APC control word of each power grade selector hop communication standard-required, and the APC that sets up UE controls word table.
Prior art adopts traversal detection calibration method to realize the automated power control word test of mobile terminal conventionally, as shown in Figure 1, comprising:
1, all APC control words of the RF chip of UE being supported travel through test, obtain the actual emission power of all APC control words;
2,, taking the expectation transmission power level of each power grade as standard, be that each power grade is selected an APC control word;
3, APC control word corresponding each power grade is preserved as the APC of UE and controlled word table.
Further, in order to meet each power grade transmitting power accuracy index, conventionally also can accurately revise the transmitting power of each power grade for each power grade arranges an APC power coefficient.APC power coefficient is to realize by the IQ amplitude of adjustment radio frequency transmissions to the correction of transmitting power.The power bracket that APC power coefficient can be adjusted is generally several dB.
The problem of the said method of prior art is, has larger amount of redundancy compared with RF chip is supported conventionally the APC control word quantity power grade quantity required with reality, in the time of batch production, each UE traveled through to detection calibration, and efficiency is lower.
Be example with time-division-synchronization code multi-address division system (being called for short TD-SCDMA) terminal, the terminal radio frequency transmitting power scope of its requirement is 24dBm～-49dBm, and the step-length between each power grade is 1 ± 0.5dBm.Consider adjustment surplus, generally need the power grade of 80 left and right; And the RF chip of TD-SCDMA terminal can be supported 200 above APC control words conventionally, generally, same batch of terminal of dispatching from the factory be minimum thousands of portions.Adopt the method for prior art to be obviously unfavorable for improving terminal production efficiency.
Summary of the invention
In view of this, the present invention proposes a kind of automated power control word method of testing, automated power control word testing efficiency while production to improve terminal batch.
Automated power control word method of testing of the present invention comprises:
1, set up initial APC and control word table;
2, control the actual emission power Pr of the each power grade of word table test UE with initial APC
i; Obtain the Pr of each power grade
iwith expectation transmitting power Pe
ideviation △ P
i;
If 3 all △ P
iall be less than D_th, described initial APC controlled to word table and control word table as the APC of UE;
Wherein, described D_th is coefficient adjustment thresholding, and the power bracket that D_th value can be adjusted by APC power coefficient is determined; Described i is power grade sequence number.
Further, described method also comprises:
The APC power coefficient of each power grade is set according to the actual emission power of the each power grade of UE and the deviation of expecting transmitting power.
Preferably, the initial APC control table of described foundation comprises:
The APC that sets up K sample UE by traversal detection calibration method controls word table;
Control the APC control word of the power grade i of word table as initial APC with the APC control word mean value of the power grade i of sample UE;
Wherein, the span of described K is 1～M/10; M is the quantity that need carry out the UE of radio-frequency power control word detection calibration.
Further, described method also comprises:
Controlling word table with the APC of UE revises initial APC control word table.
Preferably, the described control of the APC with UE word table is revised and is comprised initial APC control word table:
The APC control word of the each power grade of initial APC control word table and the APC control word of this power grade of UE are weighted on average; Upgrade initial APC with result of weighted average and control each APC control word in word table;
Add that by initial APC control table weighted average weight UE APC control table weighted average weight upgrades initial APC control table weighted average weight;
Preferably, the described control of the APC with UE word table is revised and is comprised initial APC control word table:
If all △ P
iall be less than abnormal thresholding Th, the APC control word of the each power grade of initial APC control word table and the APC control word of this power grade of UE are weighted on average; Upgrade initial APC with result of weighted average and control each APC control word in word table; Add that by initial APC control table weighted average weight UE APC control table weighted average weight upgrades initial APC control table weighted average weight.
Further, the described control of the APC with UE word table is revised and is comprised initial APC control word table:
If there is △ P
i>=abnormal thresholding Th, judges that initial APC controls word table weighted average weight and whether is less than default weight threshold value W_Th;
Be less than W_Th if initial APC controls word table weighted average weight, respectively the APC control word of the each power grade of initial APC control word table and the APC control word of this power grade of UE be weighted on average; Upgrade initial APC with result of weighted average and control each APC control word in word table;
Be not less than W_Th if initial APC controls word table weighted average weight, deduct UE APC control table weighted average weight by initial APC control table weighted average weight and upgrade initial APC control table weighted average weight;
Wherein, the span of described W_Th is K～M/10.
Preferably, described error threshold Th span is 5dB～10dB.
Preferably, described error threshold Th is the maximum △ P of each sample UE
imean value.
Preferably, described error threshold Th is the maximum △ P of each sample UE
iroot-mean-square error.
APC of the present invention controls the actual emission power of word table method for building up with the each power grade of initial APC control word table test UE, in the time that the each power grade actual emission power of UE is being preset in deviation range with the deviation of expecting transmitting power, directly initial APC is controlled to word table and control word table as the APC of this UE.Due to the APC control word quantity that the required power grade quantity of reality can be supported much smaller than UE, method of the present invention can effectively reduce the APC control word quantity of setting up the required measurement of UE APC control word table, raises the efficiency.
Taking TD-SCDMA terminal as example, method of the present invention all only need to be tested 80 APC control words to most UE in the time of batch production, and need not test whole 200 APC control words.
Brief description of the drawings
Fig. 1 is that prior art traversal detection calibration method is set up APC control word table flow chart;
Fig. 2 is specific embodiment of the invention automated power control word method of testing overview flow chart;
Fig. 3 is that the initial APC of specific embodiment of the invention correction controls preferred implementation 1 flow chart of word table;
Fig. 4 is that the initial APC of specific embodiment of the invention correction controls preferred implementation 2 flow charts of word table;
Fig. 5 is that the initial APC of specific embodiment of the invention correction controls preferred implementation 3 flow charts of word table;
Embodiment
For further illustrating technical scheme of the present invention, be described with reference to the accompanying drawings below by specific embodiment.
Specific embodiment
The present embodiment is a kind of preferred implementation of APC control word method of testing of the present invention; Overall procedure as shown in Figure 2, comprising:
1, set up initial APC and control word table;
In whole APC control words, be that each power grade is selected an initial APC control word APC_INITi, set up initial APC and control word table;
Wherein APC_INIT
ifor the initial APC control word of power grade i, i is power grade sequence number, i=1～N; N is the quantity of needed power grade.
In the present invention, can set up initial APC according to methods such as experimental data, simulation result or empirical datas and control word table; For example, according to the technical parameter of radio frequency chip, initial APC is set and controls word table etc.
In this specific embodiment, the preferred implementation method of this step is:
101, select arbitrarily K UE as sample UE;
102, be that selected UE sets up APC control word table by the traversal detection calibration method of prior art; Obtain K APC and control word table as sample APC control word table;
103,, to each power grade, each sample APC is controlled to this power grade APC control word in word table and average the APC control word that obtains this power grade in initial APC control word table;
Wherein, APC
i(k) be the APC control word that k sample APC controls power grade i in word table; K is that sample APC controls word table sequence number, k=1～K; The span of described K is 1～M/10; M is the UE quantity that this batch of need are set up APC control word table.
Under normal circumstances, radiofrequency characteristics with a collection of UE is more or less the same, this preferred implementation makes initial APC control word table more can be applicable to the UE of same batch by the method that the several samples in a collection of UE are set up initial APC control word table, can more effectively reduce the APC control word quantity of required measurement.
To each UE, carry out following step set up UE APC control word table:
2, control the Pr of the each power grade of word table test UE with initial APC
i; Obtain the Pr of each power grade
iwith Pe
ideviation △ P
i;
3, the APC that sets up UE controls word table;
301, judged whether △ P
i>=D_th; If had, execution step 302, otherwise execution step 304;
Wherein, described Pr
ifor the power grade i actual emission power of UE; Described Pe
ifor the power grade i of UE expects transmitting power; The power bracket that coefficient adjustment thresholding D_th can be adjusted by APC power coefficient is determined; Be preferably 1～3dB;
302, measure all APC control word actual emission powers of UE;
Control actual emission power corresponding to each APC control word in word table owing to having obtained initial APC in step 2, this step can only be measured actual emission power corresponding to remaining APC control word;
303, according to the Pe of each power grade
ifrom all APC control words, select the APC control word of each power grade, the APC that sets up this UE controls word table; End step 3;
In this step, the system of selection of each power grade APC control word is, selects and Pe
ideviation is less than APC control word that the actual emission power of D_th the is corresponding APC control word as power grade i.
304, initial APC is controlled to word table and control word table as the APC of this UE.
The method of this specific embodiment also can preferably comprise after described step 3:
4, expect that according to the UE APC control each power grade actual emission power of word table and this power grade the deviation of transmitting power arranges the APC power coefficient of the each power grade of UE APC control word table.
APC power coefficient=Pe of power grade i
i-Pr
i
The method of this specific embodiment also can preferably comprise after described step 3 or step 4:
5, controlling word table with the APC of UE revises initial APC control word table.
The preferred implementation 1 of step 5 as shown in Figure 3, comprising:
501, the APC control word of the each power grade of initial APC control word table and the APC control word of this power grade of UE are weighted on average; Upgrade initial APC with result of weighted average and control each APC control word in word table;
Wherein, APC_N
ifor the APC control word of the current power grade i that tests UE; W_INIT is the weighted average weight that initial APC controls word table, and W_UE is that UE APC controls word table weighted average weight;
The initial value of described W_INIT and described W_UE can be default according to experimental data or empirical value, and the initial value that W_INIT is preferably set in the present embodiment is that K, W_UE are 1.
502, upgrade W_INIT with W_INIT+W_UE.
This preferred implementation is by controlling the correction of word table to initial APC in test process, that is to say the APC of the UE that completes test is controlled to word table also as sample, while further having improved follow-up UE test, initial APC controls the validity of word table, can effectively reduce follow-up UE and travel through the quantity of detection calibration.
The preferred implementation 2 of step 5 as shown in Figure 4, comprising:
511, judged whether △ P
i>=Th, if do not have △ P
i>=Th, execution step 512, otherwise, end step 5;
512, the APC control word of the each power grade of initial APC control word table and the APC control word of this power grade of UE are weighted on average; Upgrade initial APC with result of weighted average and control each APC control word in word table;
Described weighted average method is with preferably implementation 1 is identical;
513, upgrade W_INIT with W_INIT+W_UE;
In this preferred implementation, if when UE uses initial APC control word table to test, while having the actual emission power of power grade and the deviation of expectation transmitting power to be greater than the abnormal thresholding of setting, do not use the APC control word table of this UE to revise initial APC control word table, like this, can get rid of the interference of the abnormal UE of indivedual radiofrequency characteristicses to initial APC control word table.
The preferred implementation 3 of step 5 as shown in Figure 5, comprising:
521, judged whether △ P
i>=Th, if do not had, execution step 522; Otherwise, execution step 524;
522, the APC control word of the each power grade of initial APC control word table and the APC control word of this power grade of UE are weighted on average; Upgrade initial APC with result of weighted average and control each APC control word in word table;
523, upgrade W_INIT with W_INIT+W_UE; End step 5;
If 524 W_INIT < W_th, execution step 525, otherwise, execution step 526;
525, the APC control word of the each power grade of initial APC control word table and the APC control word of this power grade of UE are weighted on average; Upgrade initial APC with result of weighted average and control each APC control word in word table; End step 5;
Described weighted average method is with preferably implementation 1 is identical;
526, upgrade W_INIT with W_INIT-W_UE;
Wherein, described W_th is default weight thresholding, and span is preferably K～M/10; Described Th is abnormal thresholding.
In this specific embodiment, the value of Th can be set according to experimental data, simulation result or empirical value, and preferably span is 5dB～10dB;
Th also can be preferably according to the △ P of each sample UE in step 1
iset, as, the maximum △ P of each sample UE used
imean value:
Or use the maximum △ P of each sample UE
iroot-mean-square error:
Wherein, the maximum △ P that △ Pmax (k) is k sample UE
i; △ Pa is the maximum △ P of each sample UE
imean value.
This preferred implementation is on the basis of preferred implementation 2, when being judged as the UE quantity of radiofrequency characteristics " extremely " in test process when more, the radiofrequency characteristics fluctuation that this batch of UE is described is larger, now, the quantity that increases the UE that revises initial APC control word table can further improve the validity of initial APC control word table to other UE when larger with batch UE radiofrequency characteristics fluctuation.
One of ordinary skill in the art obviously should be known and be understood, the present invention for above embodiment only for the present invention is described, and be not limited to the present invention.In the situation that not deviating from spirit of the present invention and essence thereof, those skilled in the art are when making according to the present invention various corresponding changes or distortion, but these corresponding changes or distortion all belong to claim protection range of the present invention.
Claims (10)
1. an automated power control word method of testing, is characterized in that, comprising:
Set up initial automated power control APC and control word table;
Control the actual emission power Pr of the each power grade of word table testing mobile terminal UE with initial APC
i; Obtain the Pr of each power grade
iwith expectation transmitting power Pe
ideviation △ P
i;
If all △ P
iall be less than D_th, described initial APC controlled to word table and control word table as the APC of UE;
Wherein, described D_th is coefficient adjustment thresholding, and the power bracket that D_th value can be adjusted by APC power coefficient is determined; Described i is power grade sequence number.
2. automatic control word method of testing according to claim 1, is characterized in that, described method also comprises:
The APC power coefficient of each power grade is set according to the actual emission power of the each power grade of UE and the deviation of expecting transmitting power.
3. automatic control word method of testing according to claim 1, is characterized in that, the initial APC control table of described foundation comprises:
The APC that sets up K sample UE by traversal detection calibration method controls word table;
Control the APC control word of the power grade i of word table as initial APC with the APC control word mean value of sample UE power grade i.
4. automatic control word method of testing according to claim 3, is characterized in that, described method also comprises:
Controlling word table with the APC of UE revises initial APC control word table.
5. automatic control word method of testing according to claim 4, is characterized in that, the described APC with UE controls word table initial APC control word table is revised and comprised:
The APC control word of the each power grade of initial APC control word table and the APC control word of this power grade of UE are weighted on average; Upgrade initial APC with result of weighted average and control each APC control word in word table;
Add that by initial APC control table weighted average weight UE APC control table weighted average weight upgrades initial APC control table weighted average weight.
6. automatic control word method of testing according to claim 4, is characterized in that, the described APC with UE controls word table initial APC control word table is revised and comprised:
If all △ P
iall be less than abnormal thresholding Th, the APC control word of the each power grade of initial APC control word table and the APC control word of this power grade of UE are weighted on average; Upgrade initial APC with result of weighted average and control each APC control word in word table; Add that by initial APC control table weighted average weight UE APC control table weighted average weight upgrades initial APC control table weighted average weight.
7. automatic control word method of testing according to claim 6, is characterized in that, the described APC with UE controls word table initial APC control word table is revised and comprised:
If there is △ P
i>=abnormal thresholding Th, judges that initial APC controls word table weighted average weight and whether is less than default weight threshold value W_Th;
Be less than W_Th if initial APC controls word table weighted average weight, the APC control word of the each power grade of initial APC control word table and the APC control word of this power grade of UE are weighted on average; Upgrade initial APC with result of weighted average and control each APC control word in word table;
Be not less than W_Th if initial APC controls word table weighted average weight, deduct UE APC control table weighted average weight by initial APC control table weighted average weight and upgrade initial APC control table weighted average weight.
8. according to the automatic control word method of testing described in claim 6 or 7, it is characterized in that, described error threshold Th span is 5dB～10dB.
9. according to the automatic control word method of testing described in claim 6 or 7, it is characterized in that, described error threshold Th is the maximum △ P of each sample UE
imean value.
10. according to the automatic control word method of testing described in claim 6 or 7, it is characterized in that, described error threshold Th is the maximum △ P of each sample UE
iroot-mean-square error.
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|---|---|---|---|
| CN201210592115.5A CN103916197B (en) | 2012-12-29 | 2012-12-29 | A kind of automated power control word method of testing |
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|---|---|---|---|
| CN201210592115.5A CN103916197B (en) | 2012-12-29 | 2012-12-29 | A kind of automated power control word method of testing |
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| CN103916197B CN103916197B (en) | 2016-12-28 |
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| CN106922014A (en) * | 2015-12-28 | 2017-07-04 | 联芯科技有限公司 | One kind production calibration first table generating method, system and mobile terminal |
| CN107222269A (en) * | 2017-06-29 | 2017-09-29 | 苏州经贸职业技术学院 | A kind of GSM APC quick accurate calibration implementation methods based on saturation PA |
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| CN1764082A (en) * | 2004-10-21 | 2006-04-26 | 日本电气株式会社 | Radio communications set and transmit power controlling method |
| CN101436887A (en) * | 2007-11-14 | 2009-05-20 | 大唐移动通信设备有限公司 | Power control method, apparatus and mobile terminal |
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| CN106922014A (en) * | 2015-12-28 | 2017-07-04 | 联芯科技有限公司 | One kind production calibration first table generating method, system and mobile terminal |
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| CN107222269A (en) * | 2017-06-29 | 2017-09-29 | 苏州经贸职业技术学院 | A kind of GSM APC quick accurate calibration implementation methods based on saturation PA |
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|---|---|
| CN103916197B (en) | 2016-12-28 |
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