CN102324991B - Method for calibrating mobile terminal to transmit power in global system for mobile communication (GSM) frequency band - Google Patents
Method for calibrating mobile terminal to transmit power in global system for mobile communication (GSM) frequency band Download PDFInfo
- Publication number
- CN102324991B CN102324991B CN 201110234513 CN201110234513A CN102324991B CN 102324991 B CN102324991 B CN 102324991B CN 201110234513 CN201110234513 CN 201110234513 CN 201110234513 A CN201110234513 A CN 201110234513A CN 102324991 B CN102324991 B CN 102324991B
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- Prior art keywords
- mobile terminal
- calibration
- parameter
- signal line
- line loss
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
Abstract
The invention discloses a method for calibrating a mobile terminal to transmit power in global system for mobile communication (GSM) frequency band; a calibration system sets a benchmark signal path and benchmark radio frequency signal line loss of a corresponding working frequency band, and the radio frequency parameters of the mobile terminal; the mobile terminal continuously outputs a series of different power signals; a base station emulator of the calibration system reads and stores the corresponding parameters of all power signals; the corresponding radio frequency signal line loss of the next signal path of the corresponding working frequency band is set; the calibration system sets the radio frequency parameters of the mobile terminal; the mobile terminal continuously outputs a series of different power signals; and the base station emulator reads and stores the corresponding parameters of all the power signals. The invention can set different target power to different signal paths, and improves the calibration accuracy and provides convenience for the debugging of a cell phone antenna by setting the corresponding radio frequency signal line loss, and is an extremely great progress of the prior art.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method of calibrating mobile terminal emission GSM frequency band power.
Background technology
The frequency range that present mobile terminal is supported is more and more, and towards small and exquisite frivolous future development, can bring larger challenge for the design of antenna for mobile phone.Meanwhile, experience in order to promote the user, increase network capacity and efficient, operator and user require also more and more higher to the antenna performance of mobile terminal.Under the pincer attack of the requirement aspect above-mentioned two, the Antenna Design of mobile terminal is more and more difficult.
The passive S11 figure of a typical antenna, as shown in Figure 1, can be obvious draw in identical frequency range, the performance of different channels antenna is different.Take the GSM850 frequency range as example, low channel CH128 dominant frequency is 824.2MHz, and high channel CH251 dominant frequency is 848.8MHz.If conducted power all is made as the same, OTA (Over The Air: TRP (the Total Radiated Power: total radiant power) must have height to have low aerial the download).In order to guarantee that all channels all reach standard, the TRP of the reasonable channel of antenna performance (as in Fig. 1 being the CH251 channel) will inevitably be higher.Absorption rate) and HAC(Hearing Aids Compatibility this is for the SAR(Specific Absorption Rate of CH251:: the compatibility immunity to interference of the electromagnetic compatibility of hearing aids) is very difficult.
Existing solution is that the requirement antenna is adjusted antenna model and antenna match, evens up by force the TRP of different channels.This way can strengthen the difficulty of antenna adjustment.And on some mobile-terminal platforms, as high-pass platform, do not provide this type of function.That is to say, the target power of the different channels of similar frequency bands must be made as identical value, has caused its calibration efficiency lower, and the accuracy of calibration is relatively poor.
As shown in Figure 2, it is typical calibration frame in prior art, mobile terminal is connected by serial ports or USB with computer, computer also is connected with base station emulator (typical case has CMU200 or Agilent8960 etc.) by gpib interface simultaneously, and controls base station emulator and read the signal that base station emulator records by this interface; Its typical calibration of power flow process is substantially as follows:
The calibration system command terminal enters calibration mode;
The calibration system command terminal enters certain working frequency range, as the GSM850 channel;
Calibration system order base station emulator (typical case has CMU200 or Agilent8960 etc.) enters test pattern;
Fixing rf signal line loss (loss of different operating frequency range is different) is set;
Some platform (as high-pass platform), the radio frequency parameter that calibration system arranges mobile terminal (comprises calibration channel, emission path power contorl parameters), the a series of different capacity signals of command terminal continuous wave output, and control base station emulator and read control parameter, power output data, the phase data of this a series of signal and store this cover parameter;
Other platform (as the MTK platform), calibration system arrange radio frequency parameter and the instruction issue signal of mobile terminal, the signal power of then launching by the base station emulator reading terminals; If the scope that this power and desired value error are not being set; Revise so the radio frequency parameter of terminal and emission again, and readout power again; Repeat these steps until terminal transmit power and target power equate or differ in the allowed band of default; Then store this cover radio frequency parameter;
Calibration system order mobile terminal and base station emulator enter into another working frequency range;
Repeat aforesaid operations;
Complete when all working frequency range calibration that mobile terminal is supported, store all calibration gained radio frequency parameters in mobile terminal memory, then withdraw from calibration.
Can find out from above step, the RF line loss that the different channels on same working frequency range uses is the same, has reduced the accuracy of its calibration, can't accurately calibrate the radio frequency parameter of different channels on same frequency range.
This shows, prior art needs further improvement and develops.
Summary of the invention
The present invention provides a kind of method of calibrating mobile terminal emission GSM frequency band power for solving above-mentioned defective of the prior art, solution can't accurately calibrate different channels on same frequency range radio frequency parameter, the different channels technical problem of target power separately can not be set, to improve calibration accuracy, facilitate the debugging of antenna for mobile phone.
For solving the problems of the technologies described above, the present invention program comprises:
A kind of method of calibrating mobile terminal emission GSM frequency band power, it comprises the following steps:
A, mobile terminal enter corresponding working frequency range, calibration system arranges reference channel and the reference RF signal line loss of described corresponding working frequency range, described calibration system arranges the radio frequency parameter of described mobile terminal, the a series of different capacity signals of described mobile terminal continuous wave output, the base station emulator of described calibration system reads and stores the corresponding parameter of each power signal;
B, the corresponding radiofrequency signal line loss of described next channel of corresponding working frequency range is set according to described reference RF signal line loss;
C, described next channel of the described base station emulator test of described calibration system order, described calibration system arranges the radio frequency parameter of described mobile terminal, the a series of different capacity signals of described mobile terminal continuous wave output, described base station emulator reads and stores the corresponding parameter of each power signal.
Described calibration steps, wherein, described step B comprises that also described corresponding radiofrequency signal line loss is reference signal line loss and radiofrequency signal line loss offset sum, the target power that described radiofrequency signal line loss offset is reference channel and the target power of described next channel poor.
Described calibration steps wherein, also comprises mobile terminal access calibration system before described steps A, described mobile terminal is calibration mode.
Described calibration steps, wherein, described calibration steps also comprises repeating said steps B and described step C, obtains the corresponding parameter of described corresponding each channel of working frequency range, and described base station emulator arrives the corresponding Parameter storage of described corresponding each channel of working frequency range in described mobile terminal.
Described calibration steps, wherein, radio frequency parameter is that calibration channel is controlled parameter with emission path energy.
Described calibration steps, wherein, the corresponding parameter in described step C is control parameter, power output parameter and the phase parameter of corresponding power signal.
Described calibration steps, wherein, described calibration steps also comprises another working frequency range of the described mobile terminal of the described base station emulator calibration of described calibration system order, repeating said steps A is to described step C.
Described calibration steps, wherein, after described calibration steps comprised that also described calibration system is complete with described mobile terminal all working frequency range calibration, described calibration system withdrawed from calibration.
The invention provides a kind of method of calibrating mobile terminal emission GSM frequency band power, can different target powers be set to different channels, by corresponding radiofrequency signal line loss is set, and then realized the different channels of same working channel is accurately calibrated respectively, improved the accuracy of calibration, having facilitated the debugging of antenna for mobile phone, is the very big progress of prior art.
Description of drawings
Fig. 1 is the passive S11 figure of mobile terminal antenna in prior art.
Fig. 2 is the structure diagram of typical calibration frame in prior art.
Fig. 3 is the general flow chart of alignment method of the present invention.
Embodiment
The invention provides a kind of method of calibrating mobile terminal emission GSM frequency band power, clearer, clear and definite in order to make purpose of the present invention, technical scheme and advantage, below with reference to accompanying drawing and embodiment, the present invention is described in more detail.
The invention provides a kind of method of calibrating mobile terminal emission GSM frequency band power, each channel of same working frequency range is arranged corresponding radiofrequency signal line loss, thereby realized the different channels of same working channel is accurately calibrated respectively.As shown in Figure 3, it mainly comprises the following steps:
Step 101: mobile terminal enters corresponding working frequency range, calibration system arranges reference channel and the reference RF signal line loss of described corresponding working frequency range, described calibration system arranges the radio frequency parameter of described mobile terminal, the a series of different capacity signals of described mobile terminal continuous wave output, the base station emulator of described calibration system reads and stores the corresponding parameter of each power signal;
Step 102: the corresponding radiofrequency signal line loss that described next channel of corresponding working frequency range is set according to described reference RF signal line loss;
Step 103: described next channel of the described base station emulator test of described calibration system order, described calibration system arranges the radio frequency parameter of described mobile terminal, the a series of different capacity signals of described mobile terminal continuous wave output, described base station emulator reads and stores the corresponding parameter of each power signal.
In order further to improve performance of the present invention, described step 102 comprises that also described corresponding radiofrequency signal line loss is reference signal line loss and radiofrequency signal line loss offset sum, the target power that described radiofrequency signal line loss offset is reference channel and the target power of described next channel poor.
Further, also comprise mobile terminal access calibration system before described step 101, described mobile terminal is calibration mode.
Further, described calibration steps also comprises repeating said steps 102 and described step 103, obtain the corresponding parameter of described corresponding each channel of working frequency range, described base station emulator arrives the corresponding Parameter storage of described corresponding each channel of working frequency range in described mobile terminal.
Further, radio frequency parameter is that calibration channel is controlled parameter with emission path energy.
Further, the corresponding parameter in described step 103 is control parameter, power output parameter and the phase parameter of corresponding power signal.
Further, described calibration steps also comprises another working frequency range of the described mobile terminal of the described base station emulator calibration of described calibration system order, and repeating said steps 101 is to described step 103.
Further, after described calibration steps comprised that also described calibration system is complete with described mobile terminal all working frequency range calibration, described calibration system withdrawed from calibration.
In order further to describe the present invention, existing to use GSM frequency range calibration system as example, elaborate.
If first value of the NV_GSM_POWER_LEVELS_I of GSM850 is set as 3200, the target power of the maximum power of GSM850 (power grade 5) is exactly 32dBm so, if be made as 3250 so maximum power be exactly 32.5dBm by that analogy.
Suppose that we require low channel (CH128) target power of GSM850 channel
Be 32dBm, high channel (CH251) target power
Be 33dBm, wherein take low channel (CH128) as reference channel, its radiofrequency signal line loss is the reference RF signal line loss
, the target power difference of two channels is radiofrequency signal line loss offset, namely
, specific to being exactly 32-33=-1 in this example.Implementation procedure is as follows so:
A, calibration system order mobile terminal enter calibration mode
B, the described mobile terminal of described calibration system order enter certain working frequency range, and this example is the GSM850 frequency range;
C, described calibration system order base station emulator (the exemplary base station simulator has CMU200 or Agilent8960 etc.) enter test pattern;
D, described calibration system set the reference RF signal line loss
, general normal value 0.5dB here;
E, low channel (CH128) is calibrated, described calibration system arranges the radio frequency parameter of described mobile terminal, described radio frequency parameter comprises calibration channel and emission path energy control parameter, described calibration system is a series of different capacity signals of the described mobile terminal continuous wave output of instruction simultaneously, and control base station emulator and read control parameter, power output data, the phase data of this a series of signal and store this cover parameter;
F, described calibration system arrange the corresponding radiofrequency signal line loss of described high channel (CH251)
, here
=0.5dB+(-1)=-0.5dB.
J, high channel (CH251) is calibrated, described calibration system arranges the radio frequency parameter of described mobile terminal, described radio frequency parameter comprises calibration channel and emission path energy control parameter, described calibration system is a series of different capacity signals of the described mobile terminal continuous wave output of instruction simultaneously, and control base station emulator and read control parameter, power output data, the phase data of this a series of signal and store this cover parameter;
All radio frequency parameters that h, described calibration system will be calibrated are stored in the memory of described mobile terminal, and described calibration system withdraws from calibration, namely complete the calibration to the GSM850 frequency range.
From above-mentioned algorithm as can be known, key is described step f, if do not reset the radiofrequency signal line loss, but continues to use normal line loss, and the complete rear target power of high channel (CH251) calibration must be 32dBm so.
And in the present invention in high channel (CH251) calibration process, in order to allow base station emulator read the power of 32dBm, terminal need to increase transmitting power.Because base station emulator is to the performance number that records of calibration system report
, here
Namely arrive the actual power of base station emulator prevention at radio-frequency port.
Now
(0.5dB) lacked 1dB than actual value, and be identical in order to obtain
,
Must increase 1dB.
Increase, the power that sends of described mobile terminal also just must increase 1dB.
From above-mentioned analysis as can be known, the present invention can complete the function that GSM similar frequency bands different channels is made as different target power very easily, has improved the accuracy of calibration, has facilitated the debugging of antenna for mobile phone.
Should be understood that; above-mentioned description for preferred embodiment is comparatively detailed; can not therefore think the restriction to scope of patent protection of the present invention; those of ordinary skill in the art is under enlightenment of the present invention; do not breaking away from the scope situation that claim of the present invention protects; can also make the various deformation such as replacement, simple combination, within these all fell into protection scope of the present invention, the scope of asking for protection of the present invention should be as the criterion with claims.
Claims (7)
1. a method of calibrating mobile terminal emission GSM frequency band power, is characterized in that, it comprises the following steps:
A, mobile terminal enter corresponding working frequency range, calibration system arranges reference channel and the reference RF signal line loss of described corresponding working frequency range, described calibration system arranges the radio frequency parameter of described mobile terminal, the a series of different capacity signals of described mobile terminal continuous wave output, the base station emulator of described calibration system reads and stores the corresponding parameter of each power signal;
B, the corresponding radiofrequency signal line loss of described next channel of corresponding working frequency range is set according to described reference RF signal line loss;
C, described next channel of the described base station emulator test of described calibration system order, described calibration system arranges the radio frequency parameter of described mobile terminal, the a series of different capacity signals of described mobile terminal continuous wave output, described base station emulator reads and stores the corresponding parameter of each power signal;
Described step B comprises that also described corresponding radiofrequency signal line loss is reference signal line loss and radiofrequency signal line loss offset sum, the target power that described radiofrequency signal line loss offset is reference channel and the target power of described next channel poor.
2. calibration steps according to claim 1, is characterized in that, also comprises mobile terminal access calibration system before described steps A, and described mobile terminal is calibration mode.
3. calibration steps according to claim 1, it is characterized in that, described calibration steps also comprises repeating said steps B and described step C, obtain the corresponding parameter of described corresponding each channel of working frequency range, described base station emulator arrives the corresponding Parameter storage of described corresponding each channel of working frequency range in described mobile terminal.
4. calibration steps according to claim 1, is characterized in that, radio frequency parameter is that calibration channel is controlled parameter with emission path energy.
5. calibration steps according to claim 1, is characterized in that, the corresponding parameter in described step C is control parameter, power output parameter and the phase parameter of corresponding power signal.
6. calibration steps according to claim 3, is characterized in that, described calibration steps also comprises another working frequency range of the described mobile terminal of the described base station emulator calibration of described calibration system order, and repeating said steps A is to described step C.
7. calibration steps according to claim 6, is characterized in that, after described calibration steps comprised that also described calibration system is complete with described mobile terminal all working frequency range calibration, described calibration system withdrawed from calibration.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110234513 CN102324991B (en) | 2011-08-16 | 2011-08-16 | Method for calibrating mobile terminal to transmit power in global system for mobile communication (GSM) frequency band |
| PCT/CN2012/079752 WO2013023539A1 (en) | 2011-08-16 | 2012-08-07 | Method for calibrating transmission gsm frequency band power of mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110234513 CN102324991B (en) | 2011-08-16 | 2011-08-16 | Method for calibrating mobile terminal to transmit power in global system for mobile communication (GSM) frequency band |
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| CN102324991A CN102324991A (en) | 2012-01-18 |
| CN102324991B true CN102324991B (en) | 2013-11-06 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102324991B (en) * | 2011-08-16 | 2013-11-06 | 惠州Tcl移动通信有限公司 | Method for calibrating mobile terminal to transmit power in global system for mobile communication (GSM) frequency band |
| CN103533156A (en) * | 2013-07-29 | 2014-01-22 | 共青城赛龙通信技术有限责任公司 | Power forced sending method and system of high pass platform mobile phone |
| CN105357379A (en) * | 2015-10-27 | 2016-02-24 | 上海斐讯数据通信技术有限公司 | Method and system for making intelligent terminal still be effective after being restarted under specific mode |
| US10630517B2 (en) * | 2017-09-12 | 2020-04-21 | Mediatek Inc. | Method and apparatus for multi-TRP and multi-panel transmission in wireless communications |
| CN108494602B (en) * | 2018-04-08 | 2020-11-06 | 上海鸿洛通信电子有限公司 | OTA parameter adjusting method and device and intelligent terminal |
| CN111257672B (en) * | 2020-02-11 | 2022-11-15 | 深圳市广和通无线股份有限公司 | Line loss point inspection method and device, computer equipment and storage medium |
| CN113114284B (en) * | 2021-04-12 | 2023-01-06 | 维沃移动通信有限公司 | Control method and control device of radio frequency circuit and electronic equipment |
| CN114172593A (en) * | 2021-11-04 | 2022-03-11 | 杭州涂鸦信息技术有限公司 | Power calibration method, calibration equipment and calibration system of wireless module |
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| CN1719736A (en) * | 2005-07-19 | 2006-01-11 | 中兴通讯股份有限公司 | Method for correcting power |
| CN101330334A (en) * | 2008-03-04 | 2008-12-24 | 深圳市中兴集成电路设计有限责任公司 | Apparatus and method for calibrating communication distance of radio frequency SIM card |
| CN101990285A (en) * | 2010-12-02 | 2011-03-23 | 惠州Tcl移动通信有限公司 | Power control method and device of terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100498330B1 (en) * | 2002-10-07 | 2005-07-01 | 엘지전자 주식회사 | Receive power compensation method for frequencies of mobile communication device |
| CN1266964C (en) * | 2002-10-10 | 2006-07-26 | 华为技术有限公司 | Automatic correction compensation system and method for mobile terminal |
| KR20040077063A (en) * | 2003-02-27 | 2004-09-04 | 엘지전자 주식회사 | Radio frequency power calibration apparatus and method for hand held terminal device |
| GB2424133B (en) * | 2005-03-09 | 2008-07-30 | Renesas Tech Corp | Communication semiconductor integrated circuit, communication electronic component and wireless communication system |
| KR100735366B1 (en) * | 2005-08-23 | 2007-07-04 | 삼성전자주식회사 | Method and apparatus for self-calibrating in a mobile transceiver |
| CN102324991B (en) * | 2011-08-16 | 2013-11-06 | 惠州Tcl移动通信有限公司 | Method for calibrating mobile terminal to transmit power in global system for mobile communication (GSM) frequency band |
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2011
- 2011-08-16 CN CN 201110234513 patent/CN102324991B/en not_active Expired - Fee Related
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- 2012-08-07 WO PCT/CN2012/079752 patent/WO2013023539A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719736A (en) * | 2005-07-19 | 2006-01-11 | 中兴通讯股份有限公司 | Method for correcting power |
| CN101330334A (en) * | 2008-03-04 | 2008-12-24 | 深圳市中兴集成电路设计有限责任公司 | Apparatus and method for calibrating communication distance of radio frequency SIM card |
| CN101990285A (en) * | 2010-12-02 | 2011-03-23 | 惠州Tcl移动通信有限公司 | Power control method and device of terminal |
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| WO2013023539A1 (en) | 2013-02-21 |
| CN102324991A (en) | 2012-01-18 |
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