CN1497992A - Method of compensating receiving power according to frequency of mobile communication terminal - Google Patents
Method of compensating receiving power according to frequency of mobile communication terminal Download PDFInfo
- Publication number
- CN1497992A CN1497992A CNA200310100732XA CN200310100732A CN1497992A CN 1497992 A CN1497992 A CN 1497992A CN A200310100732X A CNA200310100732X A CN A200310100732XA CN 200310100732 A CN200310100732 A CN 200310100732A CN 1497992 A CN1497992 A CN 1497992A
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- Prior art keywords
- value
- channel
- agc
- criterion
- power
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000010295 mobile communication Methods 0.000 title claims abstract description 7
- 238000013507 mapping Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/294—Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]
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- Circuits Of Receivers In General (AREA)
Abstract
A method of compensating for a receive power by frequency of a mobile communication terminal is provided to compensate for a receive power by frequency with a software method, thereby compensating for variations of receive power between channels of a receiving unit for many terminals. A system initializes AGC tables by frequency in an NV(Non Volatile) memory(S101), and sets power tables(S102). The system turns on an LNA(S103), reads a receive power calibration value corresponding to power of a reference channel(S104), determines an AGC value for calibrating the receive power(S105), and sets calibration channels(S106). The system obtains a value for the same receive power(S107), and obtains a difference between a gain value of the reference channel and a calibrated value(S108). The system keeps repeating a process of obtaining gain values of the calibration channels as many as the set channels(S109), and performs a compensation process(S110). The system confirms whether receive power calibration values are obtained for all frequency channels(S111). If so, the system writes the calibration values in the NV memory(S112).
Description
Technical field
The present invention relates to the power control of mobile communication terminal, specifically, relate to a kind of method that compensates received power.
Background technology
Generally speaking, when the power that sends from the base station when terminal receives, (1011CH～779CH) is not both variation to received power according to channel.Therefore, for according to the channel ride gain so that received power can be imported baseband analog (BBA) device block of intermediate frequency (IF) processing unit consistently, carry out compensating the calibration of received power according to frequency (CDMA Rx COMP Vs FREQ).
Fig. 1 is the block diagram that is used for compensating according to the frequency of terminal the device of received power.
As shown in FIG., being used for the device that frequency according to terminal compensates received power comprises: terminal 101; Play the equipment 103 and the all-purpose computer 105 of the effect of base station.Terminal 101 is connected by radio frequency (RF) cable 102 with equipment 103, and equipment 103 is connected by general-purpose interface bus (GPIB) 104 with computer 105, and computer 105 is connected by the RS232 cable with terminal 101.
Because terminal is connected directly to equipment by the RF cable, so terminal is the same with the base station that is connected to reality.When equipment 103 sends a signal specific to terminal 101, terminal 101 receives this signal specific, computer 105 then obtains the performance number of this signal specific of receiving, and calibrates automatic gain control (AGC) value according to the received power of frequency channels.Terminal 101 can be obtained constant received power according to calibrated AGC value.
But, in the prior art field, because the inventor is on the calibrated AGC value VAS application-to-terminal service of reality, but the average A GC value of using several terminals is on this terminal, therefore, the power that is input on the BBA device block of IF processing unit exists very big difference.
That is, in the prior art field, (received power of the variation of 1011CH～779CH) receive, the inventor must be the input of the average A GC value of several terminals at coming in the table of received power according to the frequency compensation of terminal according to channel for compensation terminal.Equally, because the difference unification of interchannel received power compensates with reference to compensation meter, each terminal receives the difference of power exactly between compensate for channel.
Summary of the invention
Therefore, target of the present invention provides a kind of method that is used for compensating according to the frequency of mobile communication terminal received power, and this method receives the difference of power between can compensate for channel.
In order to realize these and other advantage and according to purpose of the present invention, as institute's imbody and broadly described here, a kind of method that is used for compensating according to frequency received power is provided, it may further comprise the steps: the initialization basis is stored in the table that the interior frequency of terminal is used to compensate received power, and by the wattmeter index is set criterion power is set; Determine to be stored in the AGC value of the criterion channel in the memory in the terminal, to obtain the received power the same with this criterion power; In whole frequency range, select a plurality of channels with calibration AGC value, and obtain and each channel is obtained and the AGC value of the interior identical received power of criterion channel; The AGC value of the channel by mapping and linearisation selection obtains the AGC value; And when obtaining all band A GC values, in the internal storage storage AGC of terminal value.
When in conjunction with the accompanying drawings, hereinafter detailed description of the present invention will make of the present invention above-mentioned more clear with other target, characteristic, aspect and advantage.
Description of drawings
Included accompanying drawing is used for the invention provides further understanding, and this accompanying drawing is merged and constitute the part of this specification, is used to illustrate specific embodiments of the invention, and is used for explaining principle of the present invention in conjunction with explanation.
In the accompanying drawings:
Fig. 1 is the block diagram that is used for compensating according to the frequency of terminal the device of received power.
Fig. 2 illustrates the flow chart that is used for compensating according to frequency the method for received power according to the present invention.
Fig. 3 be to executed carry out linearizing chart at the AGC value of channel of the calibration of compensation received power.
Embodiment
Now will be for the preferred embodiments of the present invention provide detailed reference, their example is shown in the drawings.
In the present invention, provide a kind of method that reduces the variation of the received power of channel in the receiving element by the calibration that directly on every mobile communication terminal, compensates received power.
Fig. 2 illustrates the flow chart that is used for compensating according to frequency the method for received power according to the present invention.
As shown in FIG., the method that is used for compensating according to frequency received power may further comprise the steps: initialization is used to compensate the table of received power according to frequency, and by the wattmeter index is set criterion power (S101 and S102) is set; Determine criterion automatic gain control (AGC) value (S105); Select a plurality of channels (S106) that are used to calibrate the AGC value to obtain the AGC value of channel of each selection so that the power of the channel of selecting can identical with criterion power (S107 and S108); The AGC value of the channel that mapping and linearisation are selected on table is with the AGC value (S110) of not choosing channel of the interchannel of acquisition selection; And when the AGC value that obtains to be used to calibrate with the received power that compensates each frequency range, in the internal storage of terminal, store the AGC value (S111) that is used to calibrate.
Describe in detail according to the method that is used for compensating received power of the present invention referring now to Fig. 1 and 2 according to frequency.
According to the order of computer 105, initialization is used to compensate the table (S101) of received power to terminal 101 according to frequency in non-volatile (NV) memory (being internal storage), and wattmeter index (SL02) is set.That is, terminal 101 is divided into N (N=16) section to power bracket when wattmeter is set, and selects in the section of having divided of wattmeter index, and specific power level is set then, in other words, and " criterion power " value.The CDMA terminal is used the power bracket of 85.3dBm or 102.4dBm.At this, the scope of 85.3dBm is from-20.7dBm to-106dBm, and the scope of 102.4dBm is from-20.7dBm to-123.1dBm.
Thereafter, computer 105 detects the opening/closing state of the low noise amplifier of this terminal.If low noise amplifier is in " cutting out " state, computer 105 is set as it " opening " state.
So far, the initialization procedure that compensates received power according to frequency has now been described.
When initialization procedure finishes, the received power calibration value (S104) of the criterion channel of computer 105 load store in the zones of different of NV memory, the AGC value (criterion AGC value) of determining to be applied to the received power calibration (S105), and selection will be carried out the channel (S106) of calibration in the above.
In selection course (S106), computer is divided into a plurality of channel region with whole frequency band, and selects the destination channel of a part (N=16) the conduct calibration power in a plurality of channel region.
The received power calibration value of criterion channel be one by for the power level that makes the particular channel that the BBA device block receives remains unchanged by carrying out the AGC value that the Rx linear gauging is obtained.
In order to measure the received power of each channel, equipment 103 sends a signal specific according to the channel of each selection.Terminal 101 receives this signal specific, and computer 105 obtains the performance number of the signal specific that receives on terminal 101.
Repeat these steps (S107 and S108) up to channel (N=16) number of selecting.By the repetition of this step (S107 and S108), the AGC value of each channel of obtaining is stored in the table that is used for compensating received power according to frequency.As shown in Figure 3, the AGC value of the channel except that N (N=16) channel obtains (S110) by the AGC value of a mapping and a linearisation N channel.
In linearization procedure, the mapped and linearisation of 16 (N) point value that the difference between the calibrated AGC value of the individual channel of AGC value and 16 (N) by the criterion channel generates.For each AGC value of the channel between 16 (N) point value, select the AGC value of the nearest point value in 16 point values.
At last, when the received power of the channel in obtaining each frequency range is calibrated the AGC value, computer writes calibrated AGC value on the NV of terminal memory, and this terminal compensates received power according to the difference between the AGC value that is stored in the interior criterion channel of NV memory and each channel.
As implied above, in the present invention, (method of the AGC value of 1011CH～779CH) calibrate compensates received power according to frequency, makes that the power level on each channel keeps constant according to the receive channel of each terminal by direct application.Therefore, can reduce the difference of performance of the interchannel of receiving element.
Equally, in the present invention, owing to can compensate by software, so can on a plurality of terminals, compensate the difference of received power of the interchannel of receiving element according to the received power of frequency.
Claims (10)
1. the frequency according to mobile communication terminal compensates the method for received power, and this method comprises the following steps:
The table that criterion power and initialization are used for coming according to frequency compensation power is set;
Determine criterion automatic gain control (AGC) value;
Selection is used to carry out a plurality of channels of AGC calibration;
Obtain the AGC value of the channel of each selection, so that the power of the channel of selecting can be identical with described criterion power;
The mapping and the AGC value of the selected channel of linearisation, thus AGC value obtained at the unselected channel of the interchannel of selection; And
When obtaining all AGC values, in the AGC of those acquisitions of terminal storage value.
2. the method for claim 1, wherein said criterion power is according to the wattmeter index value and definite certain power incoming level.
3. the method for claim 1, wherein said initialization comprises that further the state with low noise amplifier is set as " opening " state.
4. the received power calibration value of the method for claim 1, the step of wherein said definite criterion AGC value criterion value by loading self terminal is determined criterion AGC value.
5. the method for claim 1, the step of wherein said selective channel is divided into a plurality of channel region with whole frequency band, selects a part in a plurality of channel region as the destination channel of carrying out the calibration of power then.
6. the method for claim 1, the step of AGC value that wherein repeats the channel that described acquisition selects is up to the number of selected channel.
7. method as claimed in claim 6, the AGC value of the channel of wherein said selection obtains by up/down calibration criterion AGC value.
8. the method for claim 1, wherein said AGC value of having shone upon are in the AGC value of the channel of selecting and the difference value between the criterion AGC value.
9. the method for claim 1, wherein for each AGC value of not choosing channel, select the AGC value of immediate channel.
10. the method for claim 1, the wherein said AGC value that is stored in the terminal are to calibrate difference value between AGC value and the criterion AGC value at all channels.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR61068/2002 | 2002-10-07 | ||
| KR10-2002-0061068A KR100498330B1 (en) | 2002-10-07 | 2002-10-07 | Receive power compensation method for frequencies of mobile communication device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1497992A true CN1497992A (en) | 2004-05-19 |
| CN100417239C CN100417239C (en) | 2008-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200310100732XA Expired - Fee Related CN100417239C (en) | 2002-10-07 | 2003-10-08 | Method of compensating receiving power according to frequency of mobile communication terminal |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100498330B1 (en) |
| CN (1) | CN100417239C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008071129A1 (en) * | 2006-12-15 | 2008-06-19 | Huawei Technologies Co., Ltd. | Method and device and network for initializing system in wireless regional area network |
| WO2013023539A1 (en) * | 2011-08-16 | 2013-02-21 | 惠州Tcl移动通信有限公司 | Method for calibrating transmission gsm frequency band power of mobile terminal |
| CN101369835B (en) * | 2008-10-14 | 2013-04-24 | 华为终端有限公司 | Gain compensation method and device of wireless terminal |
| WO2019179412A1 (en) * | 2018-03-19 | 2019-09-26 | 电信科学技术研究院有限公司 | Noise power acquisition method and terminal |
| WO2022179439A1 (en) * | 2021-02-25 | 2022-09-01 | 展讯通信（深圳）有限公司 | Agc calibration preprocessing method and device, and storage medium and terminal |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100483287B1 (en) * | 2003-04-25 | 2005-04-15 | 엘지전자 주식회사 | Average power level search apparatus and method in system using multi look up table |
| US8081712B2 (en) | 2007-02-02 | 2011-12-20 | Interdigital Technology Corporation | Method and apparatus for mapping of absolute power grant values in wireless communications |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5497419A (en) * | 1994-04-19 | 1996-03-05 | Prima Facie, Inc. | Method and apparatus for recording sensor data |
| CN1154385A (en) * | 1995-11-06 | 1997-07-16 | 伊西康公司 | Polymer blends containing polyoxaesters |
| KR100223369B1 (en) * | 1996-12-19 | 1999-10-15 | 윤종용 | Apparatus and method for automatically contwlling gain in multic-channel communication system |
| KR100208942B1 (en) * | 1997-01-20 | 1999-07-15 | 윤종용 | Method and apparatus for power estimation of received signal in a cdma communication system |
| KR100342536B1 (en) * | 1999-12-20 | 2002-06-28 | 윤종용 | Apparatus for compensating received signal strength indicator according to temperature and method thereof |
| US6388526B1 (en) * | 2000-07-06 | 2002-05-14 | Lucent Technologies Inc. | Methods and apparatus for high performance reception of radio frequency communication signals |
-
2002
- 2002-10-07 KR KR10-2002-0061068A patent/KR100498330B1/en not_active IP Right Cessation
-
2003
- 2003-10-08 CN CNB200310100732XA patent/CN100417239C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008071129A1 (en) * | 2006-12-15 | 2008-06-19 | Huawei Technologies Co., Ltd. | Method and device and network for initializing system in wireless regional area network |
| CN101369835B (en) * | 2008-10-14 | 2013-04-24 | 华为终端有限公司 | Gain compensation method and device of wireless terminal |
| WO2013023539A1 (en) * | 2011-08-16 | 2013-02-21 | 惠州Tcl移动通信有限公司 | Method for calibrating transmission gsm frequency band power of mobile terminal |
| WO2019179412A1 (en) * | 2018-03-19 | 2019-09-26 | 电信科学技术研究院有限公司 | Noise power acquisition method and terminal |
| US11115940B2 (en) | 2018-03-19 | 2021-09-07 | Datang Mobile Communications Equipment Co., Ltd. | Method for obtaining noise power and terminal |
| WO2022179439A1 (en) * | 2021-02-25 | 2022-09-01 | 展讯通信（深圳）有限公司 | Agc calibration preprocessing method and device, and storage medium and terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100417239C (en) | 2008-09-03 |
| KR20040031928A (en) | 2004-04-14 |
| KR100498330B1 (en) | 2005-07-01 |
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Granted publication date: 20080903 Termination date: 20161008 |