CN104753615B - The RF calibration method of multimode multi-frequency scheme - Google Patents
The RF calibration method of multimode multi-frequency scheme Download PDFInfo
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- CN104753615B CN104753615B CN201310728016.XA CN201310728016A CN104753615B CN 104753615 B CN104753615 B CN 104753615B CN 201310728016 A CN201310728016 A CN 201310728016A CN 104753615 B CN104753615 B CN 104753615B
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Abstract
The present invention relates to a kind of RF calibration method of multimode multi-frequency scheme, comprise the following steps：In the various modes for sharing one first frequency range, selection carries out RF calibration using a general-purpose test-signal in the flrst mode, obtains calibration table；Using shared calibration result of the calibration table as first frequency range under the various modes；Other patterns wherein under the various modes use the code table of same form with the first mode, and the general-purpose test-signal is applied to the various modes simultaneously.
Description
Technical field
The present invention relates to moving communicating field, is to be related to a kind of RF calibration side of multimode multi-frequency scheme more specifically
Method.
Background technology
The quick change of cellular mobile communication technology just experience, the second generation (2G) mobile communication technology still make on a large scale at present
With the third generation (3G) mobile communication technology is popularized, and forth generation (4G) mobile communication technology also has started to commercialization.Each
There is different patterns again in third-generation mobile communication technology, such as 2G has GGE (GSM/GPRS/EDGE) and CDMA, 3G to have WCDMA, TD-
SCDMA and CDMA2000,4G have TD-LTE and LTE-FDD.This several generations mobile communication technology and the situation deposited cause mobile whole
End needs to support the various modes communication technology.
With developing rapidly for full mould scheme, the pattern that mobile terminal can be supported increases increasingly.For example, a shifting
Dynamic terminal be able to may be supported a variety of in GGE/TD-SCDMA/WCDMA/TD-LTE/LTE-FDD isotypes, and each pattern is again
Some frequency ranges need to be supported.In these patterns, many frequency ranges all need to support simultaneously, such as, Band3 is in GGE, WCDMA, LTE-
All need to support in FDD.
Mobile terminal needs to be calibrated to correct aberrations in property before dispatching from the factory.Calibration generally may include APC (automated powers
Control) calibrate and AGC (automatic growth control) calibrations.When mobile terminal is calibrated, same frequency range can be done under each pattern
Calibration, if these patterns all support the channel.
Because the modulation system of different mode is different, therefore current alignment scheme is generally calibrated using merotype, in respective mould
Calibrated under formula using the modulated signal of oneself.The conventional process of calibration program is that calibration in one mode is completed all
After APC, AGC calibration of frequency range, next pattern is transferred to, then completes APC, AGC calibration of next pattern.Each pattern is advised
Drawing has the code table memory space of oneself, respective calibration code table is also called in work respectively, with GGE/TD-SCDMA bimodulus schemes
Exemplified by, GGE supports B2, B3, B5, B8 frequency range, and TD-SCDMA supports B34, B39, B40 frequency range.Calibration sequence is：First calibrate GGE
The AGC of lower four frequency ranges of GMSK, and then the GSM GMSK of four frequency ranges APC, be afterwards EDGE 8PSK APC calibration, this
When complete GSM calibration；Then the calibration that pattern switching enters TD-SCDMA is carried out, is completed by same order under TD-SCDMA
APC, AGC calibration of three frequency ranges.By that analogy, for full mould scheme, it is assumed that the frequency of 5 mould 15（GGE：B2, B3, B5, B8, TD-
SCDMA：B34, B39, B40, B44, WCDMA：B1, B2, B5, B8, B3, B4, TD-LTE：B38, B39, B40, B41, LTE-FDD：
B7、B3、B17、B13、B1、B4、B20）, APC, AGC calibration of lower four frequency ranges of GGE, Zhi Houfen can be first completed in gsm mode
Not Wan Cheng under TD-SCDMA, WCDMA, TD-LTE, LTE-TDD pattern each frequency range APC, AGC calibration.
It can find the feelings that many different modes use same frequency range in multimode multi-frequency scheme be present by above calibration process
Condition, such as in the frequency scheme of 5 mould 15,8 frequency ranges such as B1, B2, B3, B4, B5, B8, B39, B40 are respectively in 2 or the mould of more than 2
Used in formula, it is as shown in table 1 below.
Frequency range schematic diagram is shared under the mould of table 15
If using conventional merotype calibration program, very big repetition calibration be present and expend.For example Band3 exists
All need to support in GGE, WCDMA, LTE-FDD, so according to traditional merotype calibration program, Band3 can GGE, WCDMA,
Calibrated under LTE-FDD patterns, the consuming of repetition prover time be present.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of RF calibration method of multi-mode multi-band terminal, to reduce school
Between punctual.
The present invention is to propose a kind of radio frequency of multimode multi-frequency scheme to solve the technical scheme that above-mentioned technical problem uses
Calibration method, comprise the following steps：In the various modes for sharing one first frequency range, selection is general using one in the flrst mode
Test signal carries out RF calibration, obtains calibration table；It is shared under the various modes using the calibration table as first frequency range
Calibration result；Other patterns wherein under the various modes use the code table of same form, and the general survey with the first mode
Trial signal is applied to the various modes simultaneously.
In one embodiment of this invention, the calibration table includes APC calibration tables and AGC calibration tables.
In one embodiment of this invention, the step of sharing calibration result includes the calibration table copying to other patterns
Target storage domain in.
In one embodiment of this invention, the above method also includes the signal power of real work being normalized to the general survey
The power of trial signal.
In one embodiment of this invention, the general-purpose test-signal is narrow band signal.
In one embodiment of this invention, the general-purpose test-signal is tone signal.
In one embodiment of this invention, the first mode be GGE, TD-SCDMA, WCDMA, TD-LTE, FDD-LTE its
One of.
The present invention eliminates same frequency between different mode by the way that similar frequency bands calibration result between different mode is multiplexed
The time consumption of Duan Chongfu calibrations, significantly reduce the prover time of multimode multi-frequency scheme.
Brief description of the drawings
For the above objects, features and advantages of the present invention can be become apparent, the tool below in conjunction with accompanying drawing to the present invention
Body embodiment elaborates, wherein：
Fig. 1 shows the calibrator (-ter) unit schematic diagram of one embodiment of the invention.
Fig. 2 shows the calibration method flow chart of one embodiment of the invention.
Fig. 3 shows frequency range multiplexing efficiency lifting schematic diagram according to embodiments of the present invention.
Embodiment
Summarily say, embodiments of the invention propose a kind of RF calibration method of multimode multi-frequency scheme.This method is not
On the basis of changing existing merotype calibration method framework, by the way that similar frequency bands calibration result between different mode is multiplexed, disappear
Except similar frequency bands repeat the time consumption of calibration between different mode, the prover time of multimode multi-frequency scheme is significantly reduced.
Embodiments of the invention can be used for multi-mode multi-band terminal, it can also be used to other radio frequency schemes.Come below by taking mobile terminal as an example
Embodiments of the invention are described.
Fig. 1 shows the calibrator (-ter) unit schematic diagram of one embodiment of the invention.Shown in reference picture 1, calibrator (-ter) unit 100 includes calculating
Machine 110 and comprehensive test instrument 120.Computer 110 controls mobile terminal 10 and comprehensive test instrument 120, performs calibration process.Comprehensive test instrument 120 can
To provide various wireless signals to terminal 10, measuring terminals 10 send the power of signal, frequency etc..
It is appreciated that although using comprehensive test instrument calibration can be made faster to be easier, but this calibration is not necessarily intended to use comprehensive test instrument.
Such as in another embodiment, comprehensive test instrument can be substituted with the combination of signal source, power meter and spectrum analyzer.Power measures
Amount terminal sends the power of signal.Signal source provides various wireless signals to terminal.Spectrum analyzer measuring terminals are sent
The frequency of signal.
In an embodiment of the present invention, calibration includes but is not limited to APC calibrations and AGC calibrations.
In an embodiment of the present invention, the pattern that terminal can be compatible include GGE, TD-SCDMA, WCDMA, TD-LTE,
One or more in FDD-LTE, the frequency range of these patterns are referred to shown in table 1 above.Many patterns as can be seen from Table 1
Same frequency range is shared.Such as GGE, WCDMA and LTE-FDD mode common frequency range B3.So if it can enter in frequency range B3
Row primary calibration, you can suitable for Three models, then can substantially save prover time.
Fig. 2 shows the calibration method flow chart of one embodiment of the invention.Shown in reference picture 2, method flow is as follows：
In step 201, in the various modes for sharing one first frequency range, selection uses a universal test in the flrst mode
Signal carries out RF calibration, obtains calibration table；
In step 202, shared calibration result of the table as the first frequency range under the various modes will be calibrated.
One advantage of this embodiment is to have used general-purpose test-signal.This general-purpose test-signal is simultaneously suitable for foregoing
Various modes.By contrast, if according to conventional merotype calibrating mode, each pattern will use the modulated signal of oneself
And it is not substantially identical.General-purpose test-signal can choose a narrow band signal.Narrow band signal will can be suitably used for bandwidth requirement
Different various patterns.For example, the bandwidth of narrow band signal can be 200KHz, and this numerical value will significantly less than each pattern
Seek bandwidth.Narrow band signal can be modulated signal, such as QPSK (QPSK signal) modulated signal.Certainly, it is narrow
Band signal can also be non-modulated signal, such as tone signal.
Meanwhile foregoing various modes use the code table of same form at least in the first frequency range.Certainly, these patterns can be with
The code table of same form is all used in all frequency ranges, regardless of whether these frequency ranges are to share frequency range.Same form code table
Purpose is easy for multiplexing of the various patterns to calibration result, without carrying out extra adjustment again.
In the present embodiment, calibration includes but is not limited to APC calibrations and AGC calibrations.Accordingly, code table can also include APC
Code table and AGC code tables.For example, APC code tables interval is designed according to 0.25dB, and dynamic range is 32dBm~-96dBm（GMSK
Except）, by 1dB designs, dynamic range is -15dB~82dB at AGC code tables interval.
Calibrated for APC, can prestore a data test signal source predefined in computer 110, each pattern,
Each frequency range APC calibrations use the data source calibration, and calibration result deposit APC is calibrated in table.Calibrated for AGC, comprehensive test instrument
The signal of a frequency deviation 50KHz can be set in 120, according to -30dBFS target value calibration AGC code tables, calibration result is stored in AGC
Calibrate in table.
According to such alignment type, after calibration, APC calibrations table and AGC calibration tables can be correspondingly produced respectively.
APC calibrations table can include the corresponding relation of power control word and actual output power of transmitter.AGC calibrations table then includes receiving
Gain and the corresponding relation of received signal power.
It is worthy of note that although code table uniform format, code table planning, calibration access technology still may be used in the present embodiment
To be carried out according to merotype, simply calibrate and use general-purpose test-signal.
In the calibration result of various modes multiplexing first mode, terminal 10 receives computer 110 and sent by communication port
After the order of the fixation frame structure gone out, the code table of designated area in DSP memory is copied into target according to the regulation of order and deposited
In storage area domain.This target storage domain corresponds to other patterns under various modes.
For example, following message can be provided in foregoing command：
Source listing type selecting：It is specifically defined consistent with the code table type defined in code table read write command；
Source listing offset address；
Target code table type selecting：It is specifically defined consistent with the code table type defined in code table read write command；
Target code table offset address；
Replicate code table length.
Terminal 10 operates the backcasting machine 110 that runs succeeded and returns to implementing result（ErrorCode）, when successful
ErrorCode is 0.
It should be pointed out that the baseband transmission signal power of different mode, different modulating mode is relative to the logical of calibration
Certain difference power with the power of test signal be present, therefore by the signal of real work in the protocol stack sofeware of terminal 10
Power is normalized to the general-purpose test-signal power of calibration, and the example of normalizing is as follows：
The baseband transmission signal average power that protocol stack sofeware actually generates=calibration CW baseband signal average powers
It can so ensure that terminal output power is consistent with calibration result.
Return shown in table 1, in addition to the GMSK APC in GGE patterns, remaining pattern repeats frequency range can be by this hair
Bright above-described embodiment carries out calibration result multiplexing.For the scheme of the frequency of 5 mould 15, by each pattern frequency range according to receipts（AGC）, hair
（APC）Separately statistics, is simply calculated according to number, 34.62% can be lifted compared to not multiplexing efficiency after frequency range multiplexing, such as Fig. 3 institutes
Show.
Embodiments of the invention are for multimode multi-frequency scheme, by the way that similar frequency bands calibration result between different mode is answered
With eliminating the time consumption that similar frequency bands between different mode repeat calibration, significantly reduce the calibration of multimode multi-frequency scheme
Time, while the program also compatible existing merotype calibration program.
Although the present invention describes with reference to current specific embodiment, those of ordinary skill in the art
It should be appreciated that the embodiment of the above is intended merely to the explanation present invention, can also make in the case of without departing from spirit of the invention
Go out various equivalent change or replacement, therefore, as long as change, change in the spirit of the present invention to above-described embodiment
Type will all fall in the range of following claims.
Claims (6)
1. a kind of RF calibration method of multimode multi-frequency scheme, comprises the following steps：
In the various modes for sharing one first frequency range, selection carries out radio frequency school using a general-purpose test-signal in the flrst mode
Standard, obtain calibration table；
Using shared calibration result of the calibration table as first frequency range under the various modes；
Other patterns wherein under the various modes use the code table of same form, and the general-purpose test-signal with the first mode
It is applied to the various modes simultaneously；
Wherein, the calibration table includes APC calibration tables and AGC calibration tables.
2. the method as described in claim 1, it is characterised in that using the calibration table as first frequency range under the various modes
Shared calibration result the step of include：The calibration table is copied in the target storage domain of other patterns.
3. the method as described in claim 1, it is characterised in that also include being arranged to lead to this by the signal power of real work
It is equal with the power of test signal.
4. the method as described in claim 1, it is characterised in that the general-purpose test-signal is narrow band signal.
5. method as claimed in claim 4, it is characterised in that the general-purpose test-signal is tone signal.
6. the method as described in claim 1, it is characterised in that the first mode be GGE, TD-SCDMA, WCDMA, TD-LTE,
One of FDD-LTE.
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| CN201310728016.XA CN104753615B (en) | 2013-12-25 | 2013-12-25 | The RF calibration method of multimode multi-frequency scheme |
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| CN104753615A CN104753615A (en) | 2015-07-01 |
| CN104753615B true CN104753615B (en) | 2018-03-23 |
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| CN107426743B (en) * | 2016-05-23 | 2021-05-04 | 中兴通讯股份有限公司 | Base station calibration method, device, base station and communication system |
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|---|---|---|---|---|
| CN1832359A (en) * | 2006-03-30 | 2006-09-13 | 南京东大宽带通信技术有限公司 | Multi-frequency multi-module multiple carrier testing signal source radio-frequency module |
| CN101453279A (en) * | 2007-11-29 | 2009-06-10 | 纮华电子科技（上海）有限公司 | Parallel test system and method for sharing standard correction gauge |
| CN101765128A (en) * | 2008-12-24 | 2010-06-30 | 联芯科技有限公司 | Dual-mode terminal testing device and dual-mode terminal testing method |
| CN102185950A (en) * | 2011-06-03 | 2011-09-14 | 惠州Tcl移动通信有限公司 | Radio-frequency testing device and radio-frequency testing method for multi-antenna handset |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1832359A (en) * | 2006-03-30 | 2006-09-13 | 南京东大宽带通信技术有限公司 | Multi-frequency multi-module multiple carrier testing signal source radio-frequency module |
| CN101453279A (en) * | 2007-11-29 | 2009-06-10 | 纮华电子科技（上海）有限公司 | Parallel test system and method for sharing standard correction gauge |
| CN101765128A (en) * | 2008-12-24 | 2010-06-30 | 联芯科技有限公司 | Dual-mode terminal testing device and dual-mode terminal testing method |
| CN102185950A (en) * | 2011-06-03 | 2011-09-14 | 惠州Tcl移动通信有限公司 | Radio-frequency testing device and radio-frequency testing method for multi-antenna handset |
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