CN101359935A - Method for power control path in TD-SCDMA customer terminal - Google Patents
Method for power control path in TD-SCDMA customer terminal Download PDFInfo
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- CN101359935A CN101359935A CNA2007100444549A CN200710044454A CN101359935A CN 101359935 A CN101359935 A CN 101359935A CN A2007100444549 A CNA2007100444549 A CN A2007100444549A CN 200710044454 A CN200710044454 A CN 200710044454A CN 101359935 A CN101359935 A CN 101359935A
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Abstract
The invention discloses a power-control path method of a TD-SCDMA user terminal. The method being able to reduce the ping-pong effect to the maximum applies to the power path control of a plurality of gain models. The method adopts the technical proposal that the method includes: power overlapping areas of different models are formed at a power model switching point during the auto calibration of power; different power-control paths are used to the rise and the fall at the power model switching point when the user terminal is transmitting power; the jump of the user terminal transmitting power through adjusting the power in the power overlapping areas is reduced when the power value corresponding to the power control word changes due to the environment change. The method applies to the user terminal power transmission field.
Description
Technical field
The present invention relates to a kind of power control road routing method of mobile phone, be specifically related to the method for UE (user terminal) power control path of a kind of TD-SCDMA of being applied to (TD SDMA access).
Background technology
During at present about the mobile phone transmitting power,, reduce electric current, all take high low gain mode or high, normal, basic gain mode generally speaking in order to improve the power of mobile phone power amplifier (PA).When mode switch, choosing a performance number is the gain mode switching point, adopts different gain modes respectively in the switching point both sides, thereby reaches purpose of power saving.Switching point of this usefulness is distinguished the different gains pattern a unsurmountable defective: generally speaking, automated power calibration (APC) is all carried out under room temperature and normal voltage, be that calibration value only is applicable to room temperature and normal voltage, certain drift can appear in its APC calibration value under high low temperature and high-low pressure situation, and cause the different reason of gain mode to be the difference of itself circuit topology, therefore the different drift values that gain mode produced is inconsistent under different situations, thereby has certain probability to produce " ping-pong " when causing transmitting power.It below is simple giving an example.
A UE has two kinds of gain modes of height, and the control word scope of high gain mode is: 0x000～0x3FF, the control word scope of low gain mode is: 0x8000～0x83FF.Certain channel is a mode switch points with 10dBm after the calibration of room temperature and normal voltage, 11dBm (control word after its calibration is 0x230) and more than be high gain mode, 10dBm (control word after its calibration is 0x8210) and followingly be low gain mode.Please be simultaneously referring to Fig. 1, power control path after lines 1 expression room temperature and the normal voltage calibration, power mode switching point place at low gain mode below the 10dBm and the high gain mode more than the 11dBm, do not exist and overlap the zone, thereby no matter be to rise or the decline process, all adopt same power control path.Under non-room temperature and improper voltage condition, low temperature-25 ℃ for example, the performance number of UE control word 0x230 is changed to 13dBm, is changed to 11dBm and control word is the performance number of 0x8210.Just lines 1 have been transformed into the situation of lines 2.Require at network side under the situation of UE emission 12dBm, when UE chooses high-gain control word 0x230, what then network side obtained is the signal power of 13dBm, network side can require UE power decline 1dB so, UE intelligence is chosen low gain control word 0x8210, and what then network side obtained is the signal power of 11dBm.Similarly, network side can require UE power to improve 1dB, and therefore, performance number 12dBm is beyond one's reach forever, and so forth, forms " ping-pong ".
Summary of the invention
The objective of the invention is to address the above problem, a kind of method of power control path of TD-SCDMA user terminal is provided, elimination " ping-pong " that can maximum case is applicable to the power path control of multiple gain mode.
Technical scheme of the present invention is: the present invention proposes a kind of method of power control path of TD-SCDMA user terminal, avoid contingent ping-pong when this user terminal changes performance number during at the power mode switching point, this method comprises:
During the automated power calibration, the power that forms different mode at the power mode switching point overlaps the zone;
When user's terminal transmitting power, adopt different power control paths to rising respectively with descending at this power mode switching point place;
When environmental change causes the pairing performance number of power control word to change,, reduce the saltus step of this user's terminal transmitting power by adjusting the power that this power overlaps the zone.
The method of the power control path of above-mentioned TD-SCDMA user terminal, wherein, this different power mode is high low gain mode.
The method of the power control path of above-mentioned TD-SCDMA user terminal, wherein, this different power mode is high, normal, basic gain mode.
The method of the power control path of above-mentioned TD-SCDMA user terminal, wherein, the power that this power overlaps the zone is to adjust by dsp chip.
The method of the power control path of above-mentioned TD-SCDMA user terminal, wherein, the forming process that this power overlaps the zone is: to make two power modes of conversion on this power mode switching point, at least there are two control words in the power mode separately, pairing performance number is identical respectively, and those performance numbers are identical but the different point of control word that it is corresponding constitutes this power overlaps the zone.
The method of the power control path of above-mentioned TD-SCDMA user terminal, wherein, to the power control path that rises, the performance number in this power overlaps the zone is selected the control word under the relatively low power mode; To the power control path that descends, the performance number in this power overlaps the zone is selected the control word under the higher relatively power mode.
The method of the power control path of above-mentioned TD-SCDMA user terminal, wherein, this power overlaps the zone to be changed along with the variation of the performance number of power control word correspondence:
Performance number after changing overlaps the zone according to the power after changing during by low uprising, and adopts the power control path that rises;
Performance number after changing overlaps the zone according to the power after changing during by high step-down, adopts the power control path that descends.
The present invention contrasts prior art following beneficial effect: the present invention reduces the different power control path of both of these case employing by gain being increased with gain, has eliminated ping-pong basically.
Description of drawings
Fig. 1 is the schematic diagram of method of the power control path of traditional TD-SCDMA user terminal.
Fig. 2 is the flow chart of preferred embodiment of method of the power control path of TD-SCDMA user terminal of the present invention.
Fig. 3 is the schematic diagram of preferred embodiment of method of the power control path of TD-SCDMA user terminal of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 2 shows the flow process of preferred embodiment of method of the power control path of TD-SCDMA user terminal of the present invention.Seeing also Fig. 2, is the detailed description to each step in this method flow below.
Step S10: when UE carried out automated power calibration (APC), the power that forms different mode at the power mode switching point overlapped the zone.These different capacity patterns can be high low gain modes, also can be high, normal, basic gain modes.
The forming process that power overlaps the zone is: to make two power modes of conversion on this power mode switching point, at least there are two control words in the power mode separately, pairing performance number is identical respectively, and those performance numbers are identical but the different point of control word that it is corresponding constitutes this power overlaps the zone.
Step S12: when the UE transmitting power, adopt different power control paths to rising respectively with descending at this power mode switching point place.
To the power control path that rises, the performance number in this power overlaps the zone is selected the control word under the relatively low power mode; To the power control path that descends, the performance number in this power overlaps the zone is selected the control word under the higher relatively power mode.For example see shown in Figure 2ly, when power rose that promptly gain increases, power control path was from a → b → c → d, and power when descending power control path from d → e → f → a.If increase temperature-compensating and voltage compensation again, then can eliminate " ping-pong " basically.
Step S14: when environmental change causes the pairing performance number of power control word to change,, reduce the saltus step of this UE transmitting power, avoid ping-pong by adjusting the power that this power overlaps the zone.
This power overlaps the zone to be changed automatically along with the variation of the performance number of power control word correspondence.Performance number after changing overlaps the zone according to the power after changing during by low uprising, and adopts the power control path that rises; Performance number after changing overlaps the zone according to the power after changing during by high step-down, adopts the power control path that descends.
Lift an example below the present invention is described.A UE has two kinds of gain modes of height, and the control word scope of high gain mode is: 0x000～0x3FF, the control word scope of low gain mode is: 0x8000～0x83FF.Certain channel is after room temperature and normal voltage calibration, in switching place of high low gain mode, the performance number and the control word thereof of its high-gain section of calibration back are 10dBm (0x220), 11dBm (0x230), 12dBm (0x240), 13dBm (0x250), 14dBm (0x260) ..., the performance number of its low gain section and control word thereof are 11dBm (0x8220), 10dBm (0x8210), 9dBm (0x8200), 8dBm (0x81F0) ...From here as can be seen, the control word of 10dBm and 11dBm correspondence is different values under high low gain mode, overlaps the zone thereby constitute power.During the UE transmitting power, its power control path as described in Figure 3: its gain controlling word is during rising: ... 0x81F0 (8dBm), 0x8200 (9dBm), 0x8210 (10dBm), 0x8220 (11dBm), 0x240 (12dBm), 0x250 (13dBm), 0x260 (14dBm) Its gain controlling word is during decline: ... 0x260 (14dBm), 0x250 (13dBm), 0x240 (12dBm), 0x230 (11dBm), 0x220 (10dBm), 0x8200 (9dBm), 0x81F0 (8dBm) ...When temperature dropped to-25 ℃, the performance number and the control word thereof of high-gain section were changed to: 12dBm (0x220), 13dBm (0x230), 14dBm (0x240), 15dBm (0x250), 16dBm (0x260) The performance number of its low gain section and control word thereof are 12dBm (0x8220), 11dBm (0x8210), 10dBm (0x8200), 9dBm (0x81F0) ...Power overlaps the zone to be changed along with the variation of performance number, and only 12dBm power constitutes new power coincidence zone.
So, during the UE transmitting power, dsp chip overlaps the zone by adjusting, and makes the saltus step of UE transmission power level little, thereby avoids the generation of " ping-pong ".Its power control path is as follows: the gain controlling word is during rising: ... 0x81F0 (9dBm), 0x8200 (10dBm), 0x8210 (11dBm), 0x8220 (12dBm), 0x240 (14dBm), network side finds that the power of UE generation is bigger from 12dBm (0x8220) → 14dBm (0x240) power saltus step, require UE decline 1dB, then the UE transmit power variation is 13dBm (0x230), thereby the control word in the gain mode control path when rising is corrected for: ... 0x81F0 (9dBm), 0x8200 (10dBm), 0x8210 (11dBm), 0x8220 (12dBm), 0x230 (13dBm), 0x240 (14dBm) 0x250 (15dBm) ...That is to say,, adopt the power control path transmitting power that rises with reference to new power coincidence zone.
Similarly, the control word in the gain mode control path during decline is: ... 0x260 (16dBm), 0x250 (15dBm), 0x240 (14dBm), 0x230 (13dBm), 0x220 (12dBm), 0x8210 (11dBm), 0x8200 (10dBm) ..., also be with reference to new power coincidence zone, adopt the power control path transmitting power that rises.Promptly wherein there is not the excessive point of saltus step, thereby can avoids the generation of " ping-pong ".
The foregoing description provides to those of ordinary skills and realizes or use of the present invention; those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; the foregoing description is made various modifications or variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (7)
1, a kind of method of power control path of TD-SCDMA user terminal is avoided contingent ping-pong when this user terminal changes performance number during at the power mode switching point, this method comprises:
During the automated power calibration, the power that forms different mode at the power mode switching point overlaps the zone;
When user's terminal transmitting power, adopt different power control paths to rising respectively with descending at this power mode switching point place;
When environmental change causes the pairing performance number of power control word to change,, reduce the saltus step of this user's terminal transmitting power by adjusting the power that this power overlaps the zone.
2, the method for the power control path of TD-SCDMA user terminal according to claim 1 is characterized in that, this different power mode is high low gain mode.
3, the method for the power control path of TD-SCDMA user terminal according to claim 1 is characterized in that, this different power mode is high, normal, basic gain mode.
4, the method for the power control path of TD-SCDMA user terminal according to claim 1 is characterized in that, the power that this power overlaps the zone is to adjust by dsp chip.
5, the method for the power control path of TD-SCDMA user terminal according to claim 1, it is characterized in that, the forming process that this power overlaps the zone is: to make two power modes of conversion on this power mode switching point, at least there are two control words in the power mode separately, pairing performance number is identical respectively, and those performance numbers are identical but the different point of control word that it is corresponding constitutes this power overlaps the zone.
6, the method for the power control path of TD-SCDMA user terminal according to claim 1 is characterized in that, to the power control path that rises, the performance number in this power overlaps the zone is selected the control word under the relatively low power mode; To the power control path that descends, the performance number in this power overlaps the zone is selected the control word under the higher relatively power mode.
7, the method for the power control path of TD-SCDMA user terminal according to claim 1 is characterized in that, this power overlaps the zone to be changed along with the variation of the performance number of power control word correspondence:
Performance number after changing overlaps the zone according to the power after changing during by low uprising, and adopts the power control path that rises;
Performance number after changing overlaps the zone according to the power after changing during by high step-down, adopts the power control path that descends.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106604302A (en) * | 2016-11-28 | 2017-04-26 | 捷开通讯(深圳)有限公司 | Terminal power calibration method |
| CN110099434A (en) * | 2019-05-28 | 2019-08-06 | 维沃移动通信有限公司 | A kind of power regulating method, terminal device and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1258273C (en) * | 2003-03-12 | 2006-05-31 | 智邦科技股份有限公司 | Signal transmission power controlling method based on CDMA wireless communication system |
| GB2401749B (en) * | 2003-05-14 | 2006-09-20 | Ubinetics Ltd | Transmission power calibration |
| CN100508422C (en) * | 2004-07-09 | 2009-07-01 | 联发科技股份有限公司 | Controlling method and apparatus for transfer power amplifier |
| CN100423469C (en) * | 2006-02-28 | 2008-10-01 | 北京天碁科技有限公司 | Down power controlling system and method based on mobile terminal power prediction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106604302A (en) * | 2016-11-28 | 2017-04-26 | 捷开通讯(深圳)有限公司 | Terminal power calibration method |
| CN106604302B (en) * | 2016-11-28 | 2020-11-13 | 捷开通讯(深圳)有限公司 | Power calibration method of terminal |
| CN110099434A (en) * | 2019-05-28 | 2019-08-06 | 维沃移动通信有限公司 | A kind of power regulating method, terminal device and computer readable storage medium |
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Application publication date: 20090204 Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Assignor: Xin Xin finance leasing (Beijing) Co.,Ltd. Contract record no.: 2018990000163 Denomination of invention: Method for power control path in TD-SCDMA customer terminal Granted publication date: 20120905 License type: Exclusive License Record date: 20180626 |
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Application publication date: 20090204 Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Assignor: Xinxin Finance Leasing (Xiamen) Co.,Ltd. Contract record no.: X2021110000010 Denomination of invention: Method of power control path for TD-SCDMA user terminal Granted publication date: 20120905 License type: Exclusive License Record date: 20210317 |
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