CN103906214A - LTE terminal uplink signal power calibrating method - Google Patents
LTE terminal uplink signal power calibrating method Download PDFInfo
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- CN103906214A CN103906214A CN201210586392.5A CN201210586392A CN103906214A CN 103906214 A CN103906214 A CN 103906214A CN 201210586392 A CN201210586392 A CN 201210586392A CN 103906214 A CN103906214 A CN 103906214A
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Abstract
The invention relates to an LTE terminal uplink signal power calibrating method which is executed among a control console, a test instrument and a terminal. The method includes the following steps of firstly, pre-storing an APC control word list in the terminal; secondly, conducting one-time instruction interaction between the control console and the terminal, and outputting dynamic power test signals on a designated sub-frame through the terminal according to a control instruction of the control console and according to a series of designated APC control words and frequency points, wherein the series of APC control words are read from the APC control word list according to the control instruction; thirdly, conducting scanning at the test instrument according to output power of the APC control words in the APC control word list at all the frequency points, obtaining power measurement values and returning the power measurement values to the control console; fourthly, selecting satisfactory power values from the power measurement values on the control console so as to determine the satisfactory APC control words, and storing the final result in the terminal.
Description
Technical field
The present invention relates to a kind of LTE(Long Term Evolution) calibration steps of terminal upward signal power.
Background technology
The existing LTE terminal upward signal calibration of power adopts the mode of single step pointwise calibration to carry out.Fig. 1 illustrates existing LTE terminal upward signal power calibrating method 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 control terminal the tone signal that in frequency and specified power grade, interval subframe output duration is 1ms; In step 102, the power output (Pow) of computer control test instrumentation measuring terminals; In step 103, judge Pow whether in the limited range of test plan, if, enter step 104, repeat said process, until the whole calibrations of the power grade of specifying in test plan and frequency are complete, other can not calculate by formula fitting through points of calibration; Then in step 105, the code table of having calibrated is saved in the memory of terminal; If not, enter step 106, calculate the APC control word that this power grade should be corresponding, revised APC control word output signal for computer control terminal according to Pow and its desired value.
But, there is following point in above-mentioned LTE terminal upward signal power calibrating method:
1, affected by chip characteristics larger for calibration algorithm;
2, computer and station command interaction times are extremely frequent;
3, test instrumentation vacancy rate is high, reduces Instrument use efficiency;
4, need repeat computation and measurement;
5, 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 LTE terminal upward signal power calibrating method, to ensure, under the prerequisite of calibration accuracy, promoting calibration efficiency.
The present invention be solve the problems of the technologies described above the technical scheme adopting be propose a kind of LTE terminal upward signal power calibrating method, be to carry out between control desk, test instrumentation and terminal, the method comprises the following steps: an APC control word list prestores in this terminal; Between this control desk and this terminal, carry out one time command interaction, this terminal is according to the control command of this control desk a series of APC control words and frequency output dynamic power test signal to specify in given sub-frame, and this series A PC control word is to read from this APC control word list according to this control command; , obtain power measurement values and return to this control desk the power output on each frequency scans according to the APC control word in this APC control word list at this test instrumentation; And from this power measurement values, choose satisfactory performance number at this control desk and determine satisfactory APC control word, and final result is saved in this terminal.
In one embodiment of this invention, this terminal is exported this dynamic power test signal with 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 LTE terminal upward signal power calibrating method, is to carry out in this terminal, and the method comprises the following steps: an APC control word list prestores; Carry out command interaction one time with this control desk, according to the control command of this control desk a series of APC control words and frequency output dynamic power test signal to specify in given sub-frame, this series A PC control word is to read from this APC control word list according to this control command; And obtain and preserve satisfactory APC control word from this control desk.
In one embodiment of this invention, this terminal is exported this dynamic power test signal with predetermined time interval.
In one embodiment of this invention, this test signal is tone signal.
Adopt above-mentioned upward signal power calibrating method of the present invention, the upward signal calibration of power only needs command interaction and primary instrument to measure, and has promoted largely testing efficiency and instrument utilance.
Brief description of the drawings
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 upward signal power calibrating method flow chart.
Fig. 2 illustrates the LTE terminal upward signal power calibrating method flow chart of one embodiment of the invention.
Fig. 3 illustrates the LTE terminal output signal schematic diagram of one embodiment of the invention.
Embodiment
Summarily say, embodiments of the invention propose a kind of frequency sequence and APC(Automatic Power Control that can once needs be calibrated from control desk, automated power control) the upward signal power calibrating method 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 upward signal power calibrating method flow chart of one embodiment of the invention.This method is to carry out between control desk, test instrumentation and terminal.Shown in Fig. 2, the method comprises the following steps:
In step 201, an APC control word list prestores in terminal.
For example, can create the APC control word list that a high accuracy and power bracket are larger, and the nonvolatile memory of the terminal of preserving, for example, in flash memory.Exemplary precision can be 0.5dB.Exemplary power bracket can be 28dBm～-50dBm.
In step 202, between control desk and terminal, carry out command interaction one time, terminal is according to the control command of control desk a series of APC control words and frequency output dynamic power test signal to specify in given sub-frame, and this series A PC control word is to read from this APC control word list according to this control command.
Fig. 3 illustrates the LTE terminal output signal schematic diagram of one embodiment of the invention.
In step 203,, obtain power measurement values and return to control desk the power output on each frequency scans according to the APC control word in this APC control word list at test instrumentation.
In step 204, from power measurement values, choose satisfactory performance number at control desk and determine satisfactory APC control word, and final result is saved in terminal.
In an embodiment of the present invention, this test signal can be the tone signal without any modulation.Can adopt so the common dynamic power measurement function of instrument to measure, increase instrument compatibility.
In one embodiment, terminal is exported this dynamic power test signal with predetermined time interval.For example, terminal is exported tone signal in the mode of time bursts uniformly-spaced, and output signal interval equates, equal in length.
From terminal angle, said method comprises the following steps: an APC control word list prestores; Carry out command interaction one time with this control desk, according to the control command of this control desk a series of APC control words and frequency output dynamic power test signal to specify in given sub-frame, this series A PC control word is to read from this APC control word list according to this control command; And obtain and preserve satisfactory APC control word from this control desk.
Adopt the above embodiment of the present invention, the upward signal calibration of power only needs command interaction and primary instrument to measure, and has promoted largely testing efficiency and instrument utilance.For example, adopt original common calibrating mode to calibrate, need to calibrate for the each power points on each frequency respectively, the alignment time of average each calibration point is about 2 seconds, each frequency at least needs 2 power points to calibrate, calculate with minimum point, the calibration of a frequency at least needs 4 second time.Adopt after the calibration program of the embodiment of the present invention, the disposable calibration measurement of all frequencies and power points completes, and completing all upward signal calibrations of power only need be less than 10 second time, relatively original common calibrating mode, and calibration efficiency has promoted at least 10 times.
Meanwhile, this method has good compatibility, if client has in use changed some radio-frequency devices, only needs the list to APC control word to adjust, and does not need to revise calibration algorithm, has increased the flexibility of scheme.
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 LTE terminal upward signal power calibrating method, is to carry out between control desk, test instrumentation and terminal, and the method comprises the following steps:
An APC control word list prestores in this terminal;
Between this control desk and this terminal, carry out one time command interaction, this terminal is according to the control command of this control desk a series of APC control words and frequency output dynamic power test signal to specify in given sub-frame, and this series A PC control word is to read from this APC control word list according to this control command;
, obtain power measurement values and return to this control desk the power output on each frequency scans according to the APC control word in this APC control word list at this test instrumentation; And
From this power measurement values, choose satisfactory performance number at this control desk and determine satisfactory APC control word, and final result is saved in this terminal.
2. LTE terminal upward signal power calibrating method as claimed in claim 1, is characterized in that, this terminal is exported this dynamic power test signal with predetermined time interval.
3. LTE terminal upward signal power calibrating method as claimed in claim 1, is characterized in that, this test signal is tone signal.
4. LTE terminal upward signal power calibrating method as claimed in claim 1, is characterized in that, this control desk is computer.
5. a LTE terminal upward signal power calibrating method, is to carry out in this terminal, and the method comprises the following steps:
An APC control word list prestores;
Carry out command interaction one time with this control desk, according to the control command of this control desk a series of APC control words and frequency output dynamic power test signal to specify in given sub-frame, this series A PC control word is to read from this APC control word list according to this control command; And
Obtain and preserve satisfactory APC control word from this control desk.
6. LTE terminal upward signal power calibrating method as claimed in claim 1, is characterized in that, this terminal is exported this dynamic power test signal with predetermined time interval.
7. LTE terminal upward signal power calibrating method as claimed in claim 1, is characterized in that, this test signal is tone signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210586392.5A CN103906214A (en) | 2012-12-28 | 2012-12-28 | LTE terminal uplink signal power calibrating method |
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| CN201210586392.5A CN103906214A (en) | 2012-12-28 | 2012-12-28 | LTE terminal uplink signal power calibrating method |
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| CN103906214A true CN103906214A (en) | 2014-07-02 |
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Citations (5)
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|---|---|---|---|---|
| KR20050090751A (en) * | 2004-03-09 | 2005-09-14 | 삼성전자주식회사 | Dynamic transmission power calibration in gsm(global system for mobile communication) mobile phone and transmission power calibration system applied to the same |
| CN101304270A (en) * | 2007-05-10 | 2008-11-12 | 展讯通信（上海）有限公司 | Method for implementing APC quick accurate calibration |
| CN101951634A (en) * | 2010-09-02 | 2011-01-19 | 湖北众友科技实业股份有限公司 | Method and system for automatic power control calibration of TD-LTE terminal |
| CN102088321A (en) * | 2009-12-04 | 2011-06-08 | 展讯通信（上海）有限公司 | Calibration method of time division-synchronization code division multiple access (TD-SCDMA) terminal |
| 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
- 2012-12-28 CN CN201210586392.5A patent/CN103906214A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050090751A (en) * | 2004-03-09 | 2005-09-14 | 삼성전자주식회사 | Dynamic transmission power calibration in gsm(global system for mobile communication) mobile phone and transmission power calibration system applied to the same |
| CN101304270A (en) * | 2007-05-10 | 2008-11-12 | 展讯通信（上海）有限公司 | Method for implementing APC quick accurate calibration |
| CN102088321A (en) * | 2009-12-04 | 2011-06-08 | 展讯通信（上海）有限公司 | Calibration method of time division-synchronization code division multiple access (TD-SCDMA) terminal |
| CN101951634A (en) * | 2010-09-02 | 2011-01-19 | 湖北众友科技实业股份有限公司 | Method and system for automatic power control calibration of TD-LTE terminal |
| CN102958074A (en) * | 2011-08-25 | 2013-03-06 | 联芯科技有限公司 | Mobile terminal calibration method |
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