CN103906215A - LTE terminal downlink gain calibrating method - Google Patents
LTE terminal downlink gain calibrating method Download PDFInfo
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- CN103906215A CN103906215A CN201210586403.XA CN201210586403A CN103906215A CN 103906215 A CN103906215 A CN 103906215A CN 201210586403 A CN201210586403 A CN 201210586403A CN 103906215 A CN103906215 A CN 103906215A
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Abstract
The invention relates to an LTE terminal downlink gain calibrating method which is executed among a control console, a test instrument and a terminal. The method includes the following steps of firstly, conducting one-time control instruction interaction between the control console and the terminal, and issuing the frequency point sequence to be calibrated and the AGC control word sequence to be calibrated to the terminal at a time; secondly, arranging receivers on the terminal according to first frequency points and the AGC control words in control instructions, and starting to detect power of test signals of each sub-frame; thirdly, controlling the test instrument on the control console to start to circularly output the test signals at multiple power levels and at multiple frequency points; fourthly, sequentially arranging the receivers according to the AGC control word sequences designated through the control instructions and the frequency point sequences designated through the control instructions when the terminal detects that hopping happens to power of the test signals, and measuring power of the received test signals till all the frequency point sequences and all the AGC control word sequences are completely measured; fifthly, reporting all the measured values from the terminal to the control console, conducting calculation and judgment at the control console according to the measured values returned by the terminal, and storing the final calibrating result in the terminal.
Description
Technical field
The present invention relates to a kind of LTE(Long Term Evolution) calibration steps of terminal downlink gain.
Background technology
Existing LTE terminal downlink gain calibration adopts the mode of single step pointwise calibration to carry out.Fig. 1 illustrates existing LTE terminal downlink gain calibration steps flow chart.This calibration steps needs computer, test instrumentation and terminal.Shown in Fig. 1, first as step 101, computer is specifying according to test plan table control test instrumentation the CW signal (25dbm) of exporting specified power on frequency.Then in step 102, computer and terminal are carried out command interaction one time, and terminal reports the IQ signal power average now measuring to computer according to the control command of computer, calculate yield value.In step 103, repeat repeating step 101,102, until the whole calibrations of the power points of specifying in test plan table and frequency are complete, and other can not calculate by formula fitting through points of calibration.In step 104, the code table of having calibrated is saved in the memory of terminal.
But, there is following point in above-mentioned downlink gain calibration steps: be first that computer and station command interaction times are extremely frequent, inefficiency; Secondly, test instrumentation vacancy rate is high, has reduced the service efficiency of instrument; The optimization of calibration efficiency relies on to reduce to calibrate completely and counts to carry out, can partial sacrifice calibration accuracy.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of calibration steps of LTE terminal downlink gain, to guarantee, under the prerequisite of calibration accuracy, promoting calibration efficiency.
The present invention solves the problems of the technologies described above the calibration steps that the technical scheme adopting is a kind of LTE terminal downlink gain of proposition, between a control desk, a test instrumentation and this terminal, carries out, and the method comprises the following steps:
A. carry out a control command in this control desk and this terminal mutual, disposable this terminal that is handed down to of the frequency sequence that needs are calibrated and AGC control word sequence;
B. adopt first frequency and the AGC control word configuring receiver in this control command in this terminal, start the power of the test signal that detects each subframe;
C. start the test signal of the circulation multiple power grades of output and frequency at this this test instrumentation of control desk control;
D. when this terminal detects test signal power generation saltus step, AGC control word sequence and the frequency sequence configuring receiver successively of specifying according to this control command, and the power of the test signal receiving is measured, until whole frequency sequence and AGC control word sequence measuring are complete; And
E. report all measured values from this terminal to this control desk, the measured value returning according to this terminal at this control desk calculates and judges, final calibration result is saved in this terminal.
In one embodiment of this invention, in this step c, circulate take predetermined time interval as unit and export the test signal of multiple power grades and frequency.
In one embodiment of this invention, in this steps d, configure a receiver every this predetermined time interval.
In one embodiment of this invention, this test signal is tone signal.
In one embodiment of this invention, this control desk is computer.
The present invention also proposes a kind of calibration steps of LTE terminal downlink gain, in this terminal, carries out, and the method comprises the following steps:
A. to carry out a control command mutual with a control desk, with from disposable frequency sequence and the AGC control word sequence that need to calibrate of obtaining of this control desk;
B. adopt first frequency and AGC control word configuring receiver in this control command, start the power of the test signal that detects each subframe;
C. detect the power generation saltus step of this test signal when this terminal, AGC control word sequence and the frequency sequence configuring receiver successively of specifying according to this control command, and the power of the test signal receiving is measured, until whole frequency sequence and AGC control word sequence measuring are complete; And
D. report all measured values from this terminal to this control desk, and obtain final calibration result from this control desk.
In one embodiment of this invention, in this step c, configure a receiver every this predetermined time interval.
Adopt after LTE terminal downlink gain calibration steps of the present invention, the downlink gain calibration of each standard (being TDD LTE and FDD LTE) only needs a command interaction and a test instrumentation control, has promoted largely testing efficiency and test instrumentation utilance.Meanwhile, calibration point of every increase, only needs to increase a time interval, minimum on the impact of testing efficiency, therefore avoided reducing the phenomenon of calibration point, has indirectly increased the compatibility of method to radio frequency chip.
Accompanying drawing explanation
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 illustrates existing LTE terminal downlink gain calibration steps flow chart.
Fig. 2 illustrates the LTE terminal downlink gain calibration steps flow chart of one embodiment of the invention.
Fig. 3 illustrates the downlink gain instrumentation plan of one embodiment of the invention.
Embodiment
Summarily say, embodiments of the invention propose a kind of frequency sequence and AGC(Automatic Gain Control that can once needs be calibrated from control desk, automatic gain control) the downlink gain calibration steps of control word sequence notification terminal, thus avoid computer and terminal room command interaction frequently.In an embodiment of the present invention, control desk can be the equipment that can carry out according to test plan the testing progress of control terminal and test instrumentation.Typical control desk can be computer.Dispose on computers to carry out the program of said process.In an embodiment of the present invention, terminal can be the mobile device that meets LTE standard, such as mobile phone, panel computer etc.
Fig. 2 illustrates the LTE terminal downlink gain calibration steps flow chart of one embodiment of the invention.This flow process is to carry out between computer, test instrumentation and terminal.Shown in Fig. 2, the method comprises the following steps:
In step 201, carry out a control command in control desk and terminal mutual, the frequency sequence that needs are calibrated and the disposable terminal that is handed down to of AGC control word sequence.
In step 202, adopt first frequency and the AGC control word configuring receiver in control command in terminal, start the power of the test signal that detects each subframe.
In step 203, start the test signal of the circulation multiple power grades of output and frequency at control desk control test instrumentation.
In step 204, when terminal detects test signal power generation saltus step, AGC control word sequence and the frequency sequence configuring receiver successively of specifying according to aforesaid control command, and the test signal power receiving is measured, until whole frequency sequence and AGC control word sequence measuring are complete.
In step 205, report all measured values from terminal to control desk, the measured value returning according to terminal at control desk calculates and judges, final calibration result is saved in terminal.
In one embodiment, the power measurement of test signal can use IQ(In-phase/Quadrature, inphase quadrature) metering system.Test signal can be used tone signal simply.
In one embodiment, in step 203, be the test signal that multiple power grades and frequency are exported in circulation take predetermined time interval as unit.Predetermined time interval is for example 10ms.Correspondingly, in step 204, be every a receiver of this predetermined time interval configuration.
If from the angle of terminal, the step of carrying out in end side is as follows: to carry out a control command mutual with control desk, with from disposable frequency sequence and the AGC control word sequence that need to calibrate of obtaining of this control desk; Adopt first frequency and AGC control word configuring receiver in this control command, start the power of the test signal that detects each subframe; When this terminal detects the power generation saltus step of this test signal, AGC control word sequence and the frequency sequence configuring receiver successively of specifying according to this control command, and the test signal power receiving is measured, until whole frequency sequence and AGC control word sequence measuring are complete; And report all measured values from this terminal to this control desk, and obtain final calibration result from this control desk.
The instrumentation plan of the present embodiment as shown in Figure 3.
Adopt after the LTE terminal downlink gain method of continuously calibrating of above-described embodiment, the downlink gain calibration of each standard (being TDD LTE and FDD LTE) only needs a command interaction and a test instrumentation control, has promoted largely testing efficiency and instrument utilance.Meanwhile, calibration point of every increase, only needs to increase a time interval, minimum on the impact of testing efficiency, therefore avoided reducing the phenomenon of calibration point, has indirectly increased the compatibility of method to radio frequency chip.
Embodiments of the invention have changed test instrumentation in the past and have first started output signal, the mode that terminal is started to measure with instruction control by computer subsequently.In an embodiment of the present invention, terminal is judged the power of test signal, independently judges the saltus step of test signal power, thereby automatically triggers whole downlink gain calibration.Like this, the function of test instrumentation is simple and easy to realize, and only need to export the tone signal of multiple power grades and frequency as unit circulates take the duration of setting, and does not need to carry out any information interaction with terminal.
Although the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is only for the present invention is described, in the situation that not departing from spirit of the present invention, also can make variation or the replacement of various equivalences, therefore, as long as the variation to above-described embodiment, modification all will drop in the application's the scope of claims within the scope of connotation of the present invention.
Claims (7)
1. a calibration steps for LTE terminal downlink gain is carried out between a control desk, a test instrumentation and this terminal, and the method comprises the following steps:
A. carry out a control command in this control desk and this terminal mutual, disposable this terminal that is handed down to of the frequency sequence that needs are calibrated and AGC control word sequence;
B. adopt first frequency and the AGC control word configuring receiver in this control command in this terminal, start the power of the test signal that detects each subframe;
C. start the test signal of the circulation multiple power grades of output and frequency at this this test instrumentation of control desk control;
D. detect the power generation saltus step of test signal when this terminal, AGC control word sequence and the frequency sequence configuring receiver successively of specifying according to this control command, and the power of the test signal receiving is measured, until whole frequency sequence and AGC control word sequence measuring are complete; And
E. report all measured values from this terminal to this control desk, the measured value returning according to this terminal at this control desk calculates and judges, final calibration result is saved in this terminal.
2. the method for claim 1, is characterized in that, the test signal of circulate take predetermined time interval as unit in this step c multiple power grades of output and frequency.
3. the method for claim 1, is characterized in that, in this steps d, configures a receiver every this predetermined time interval.
4. the method for claim 1, is characterized in that, this test signal is tone signal.
5. the method for claim 1, is characterized in that, this control desk is computer.
6. a calibration steps for LTE terminal downlink gain is carried out in this terminal, and the method comprises the following steps:
A. to carry out a control command mutual with a control desk, with from disposable frequency sequence and the AGC control word sequence that need to calibrate of obtaining of this control desk;
B. adopt first frequency and AGC control word configuring receiver in this control command, start the power of the test signal that detects each subframe;
C. detect the power generation saltus step of this test signal when this terminal, AGC control word sequence and the frequency sequence configuring receiver successively of specifying according to this control command, and the power of the test signal receiving is measured, until whole frequency sequence and AGC control word sequence measuring are complete; And
D. report all measured values from this terminal to this control desk, and obtain final calibration result from this control desk.
7. method as claimed in claim 6, is characterized in that, in this step c, configures a receiver every this predetermined time interval.
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| CN201210586403.XA CN103906215B (en) | 2012-12-28 | 2012-12-28 | The calibration method of LTE terminal downlink gain |
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| CN1943132A (en) * | 2004-05-31 | 2007-04-04 | 中兴通讯股份有限公司 | Calibration apparatus and method of array communication system receiving chain |
| CN101232314A (en) * | 2008-01-22 | 2008-07-30 | 中兴通讯股份有限公司 | Apparatus and method for correcting TDD intelligent antenna system |
| CN101951674A (en) * | 2010-09-16 | 2011-01-19 | 新邮通信设备有限公司 | Method and device for calibrating downlink channel gain |
| CN102014473A (en) * | 2010-12-09 | 2011-04-13 | 中兴通讯股份有限公司 | Power calibration control method and device |
| CN102958074A (en) * | 2011-08-25 | 2013-03-06 | 联芯科技有限公司 | Mobile terminal calibration method |
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2012
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| CN1943132A (en) * | 2004-05-31 | 2007-04-04 | 中兴通讯股份有限公司 | Calibration apparatus and method of array communication system receiving chain |
| US20060199552A1 (en) * | 2005-03-02 | 2006-09-07 | Cisco Technology, Inc. | Method and system for self-calibrating transmit power |
| CN101232314A (en) * | 2008-01-22 | 2008-07-30 | 中兴通讯股份有限公司 | Apparatus and method for correcting TDD intelligent antenna system |
| CN101951674A (en) * | 2010-09-16 | 2011-01-19 | 新邮通信设备有限公司 | Method and device for calibrating downlink channel gain |
| CN102014473A (en) * | 2010-12-09 | 2011-04-13 | 中兴通讯股份有限公司 | Power calibration control method and device |
| CN102958074A (en) * | 2011-08-25 | 2013-03-06 | 联芯科技有限公司 | Mobile terminal calibration method |
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Effective date of registration: 20191105 Address after: 300450 1-1-609-a, North Zone, financial and Trade Center, 6865 Asia Road, Tianjin Free Trade Zone (Dongjiang Free Trade Port Area), Binhai New Area, Tianjin Patentee after: Huiyi finance leasing (Tianjin) Co., Ltd Address before: 201206 No. 1258 Mingyue Road, Shanghai, Pudong New Area Patentee before: Leadcore Technology Co., Ltd. |
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Application publication date: 20140702 Assignee: Leadcore Technology Co., Ltd. Assignor: Huiyi finance leasing (Tianjin) Co., Ltd Contract record no.: X2020990000002 Denomination of invention: LTE terminal downlink gain calibrating method Granted publication date: 20170804 License type: Exclusive License Record date: 20200103 |
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Effective date of registration: 20220314 Address after: 201206 Ming Yue Road, Pudong New Area, Shanghai, No. 1258 Patentee after: LEADCORE TECHNOLOGY Co.,Ltd. Address before: 300450 1-1-609-a, north area of financial and Trade Center, No. 6865, Asia Road, Tianjin pilot free trade zone (Dongjiang Bonded Port Area), Binhai New Area, Tianjin Patentee before: Huiyi finance leasing (Tianjin) Co.,Ltd. |
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