CN101436887A - Power control method, apparatus and mobile terminal - Google Patents
Power control method, apparatus and mobile terminal Download PDFInfo
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- CN101436887A CN101436887A CNA200710177344XA CN200710177344A CN101436887A CN 101436887 A CN101436887 A CN 101436887A CN A200710177344X A CNA200710177344X A CN A200710177344XA CN 200710177344 A CN200710177344 A CN 200710177344A CN 101436887 A CN101436887 A CN 101436887A
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Abstract
The invention discloses a power control method, which comprises the following steps: determining current working temperature through temperature detection; inquiring predetermined reference information, confirming an APC code word corresponding to target output power under the current working temperature, and controlling output power, wherein the reference information is used for indicating a corresponding relation of the APC code word and the actual output power under various working temperatures, a difference value between adjacent temperatures is delta C, and the delta C is a corresponding temperature difference value when the output power is increased or reduced by the predetermined value. The invention discloses a power control device and a mobile terminal comprising the power control device at the same time. The method can directly inquire the reference information to obtain the APC code word corresponding to the output power. The method does not need an operator to carry out operations such as temperature compensation and the like, so the method has simple and practical operation; and the method does not need to require that the output power is in ideal linearity along with change relation of temperature. The method is suitable for performances of various senders, and is favorable for reducing design difficulty and complexity of the senders.
Description
Technical field
The present invention relates to the mobile communication technology field, more particularly, relate to a kind of Poewr control method, device and portable terminal.
Background technology
In the TD-SCDMA system, the uplink transmission power of portable terminal need satisfy the up open Loop Power control and the closed power control requirement of 3GPP (3rdGeneration Partnership Project, third generation partner program) code requirement.
Simply introduce of the specific requirement of 3GPP standard below to power control:
1), the power output of portable terminal
Table 1 has been listed the maximum nominal power output and the tolerance limit of different capacity tier definition, and industry adopts power grade 2 at present, and corresponding maximum nominal power output is 24dBm.
Table 1
| Power grade | Peak power | Tolerance limit | |
| 1 | +30dBm | +1dB/-3dB | |
| 2 | +24dBm | +1dB/-3dB | |
| 3 | +21dBm | +2dB/-2dB | |
| 4 | +10dBm | +4dB/-4dB |
2), open Loop Power control
Open Loop Power control is that the transmitter of portable terminal is provided with the ability that its power output is a designated value, and table 2 has been listed the minimum tolerance limit requirement of open Loop Power control.
Table 2
| Normal condition | ±9dB |
| Extreme situation | ±12dB |
3), closed power control
In the next time slot after portable terminal receives power control command (TPC_cmd), transmitter will have the ability that changes its power output 1,2 or 3dB according to the numerical value of Δ TPC or Δ RP-TPC, its minimum requirements is shown in table 3 and table 4, wherein, table 3 has been listed the power output step-length scope of transmitter when using closed power control, and table 4 has been listed the average output power step-length scope of transmitter when using closed power control:
Table 3
Table 4
Wherein, power power controlling command group (TPC_cmd group) is the combination of one group of power control command, and it can obtain according to a series of lasting power control command in the identical time.
As can be seen, according to the 3GPP standard, the up open Loop Power control of portable terminal requires lower, and closed power control is had relatively high expectations, and is embodied in following two aspects:
For the 24dBm peak power output that industry is used always, its tolerance is+1/-3dB;
The tolerance of 1dB power stepping is+/-0.5dB, the tolerance of continuous 10 dB steppings is+/-2dB.
For the transmitter of portable terminal, the variation of temperature and voltage serve influence all can for the power band of transmitter, makes the accuracy of power output of transmitter reduce.Wherein the influence that brings of temperature is especially big.
So for the accuracy of the power output that guarantees transmitter, need usually to adopt the temperature-compensating measure, this temperature-compensating measure mainly is:
At first carry out detection calibration and make APC (Automatic Power Control, automated power control) code table:
Equal in temperature under the situation of T0, by production test, each power grade is calibrated, find out the APC control code word of each power grade correspondence from the peak power output to the minimum output power, peak power output is 24dBm, and minimum output power is-49dBm.
Described APC code table is as shown in table 5:
Table 5
| Power output | APC controls code word |
| 24dBm | A 24 |
| 23dBm | A 23 |
| … | … |
| -48dBm | A -48 |
| -49dBm | A -49 |
The compensation of APC code word when then, determining variations in temperature:
What describe in the table 5 is production test temperature when equaling T0, and the corresponding relation of power output and APC code word is when temperature changes, power output also can be along with variation, in general, to same APC code word, when temperature raises, power output can reduce, when temperature reduced, power output can increase, therefore, when being not equal to production test temperature T 0 for actual work temperature, the APC control code word in must his-and-hers watches 5 is done temperature-compensating.
The prerequisite of doing temperature-compensating is corresponding each APC code word, power output is linear change with temperature, as shown in Figure 1, because under same temperature, power output and APC code word are also linear, so the increase of the power output that variations in temperature causes or reduce and can control code word and compensate by reducing or increases APC.For example, as shown in the figure, when production test temperature T 0, the power output of APC code word Ay correspondence is Py0, and when temperature rose to T1, real output can drop to Py1, so be Py0 as guaranteeing power output this moment, then needs to increase the APC code word to Ax.
Pass through temperature test, confirm the linear relationship of power output and temperature, be the slope of Ax (or Ay) line shown in Figure 1, the variable quantity of the every changes delta of its corresponding temperature ℃ (Δ ℃=1,5 or 10 etc.) power output: as 5 ℃ of the every risings of temperature, power output decline 0.5dB.And power output changes and the APC code word also has corresponding relation, if the variation of the corresponding 0.5dB power of the variation of 4 APC code words, suppose that working temperature compares with production test temperature T 0 n*5 ℃ variable quantity is arranged, then under this working temperature, the APC code word needs to compensate 4*n on the basis of table 5, be 5 ℃ of the every variations of temperature, 4 APC code words of corresponding compensation.
In real work, portable terminal is in the rate of carrying out control, and at first testing temperature if working temperature equals production test temperature T 0, sends a certain power output if desired, then according to table 5 the APC code word corresponding with this power output is set and gets final product; If working temperature is different with production temperature T 0, the difference of evaluation work temperature and production test temperature T 0 then, when needs send a certain power output, the APC code word corresponding in the option table 5 with this power output, the corresponding APC code word of compensation gets final product on the basis of this code word.
There is following problem in above-mentioned technical scheme of carrying out temperature-compensating:
1, solution is to propose high requirement by the temperature voltage characteristic to transmitting chain (comprising power amplifier and sender etc.) to realize.Power output must be desirable linearity with variation relation temperature and voltage, if linear relatively poor, then the method is ineffective;
2, the method requires high to chip design.Except above-mentioned higher temperature characterisitic, also require the APC adjustment stepping of sender minimum less, if stepping then can not be satisfied the power control of code requirement greater than 0.5dB.These all can add the design difficulty and the complexity of large chip;
3, to producing the required precision height of calibration and test.In production test when calibration,, error that must each power grade of control otherwise can't satisfy the requirement of closed-loop power control in ± 0.25dB.
Summary of the invention
In view of this, the invention provides a kind of Poewr control method, device and portable terminal, to solve the above-mentioned technical problem that prior art exists.
The present invention is achieved in that
A kind of Poewr control method comprises:
Determine current operating temperature by temperature detection;
The reference information that sets in advance of inquiry is determined under current operating temperature and the corresponding APC code word of target output, and power output is controlled; Described reference information is used in reference to and is shown under the various working temperatures corresponding relation of APC code word and real output; The difference of each adjacent temperature is Δ C, and described Δ C is that power output increases or the temperature gap of correspondence when reducing preset value.
Preferably, described reference information is a comparison list, this table of comparisons comprise be used to indicate same APC code word under various working temperatures with the information of the corresponding relation of real output, and same power output under various working temperatures with the information of the corresponding relation of APC code word.
Preferably, when target output is peak power output, carry out according to following steps:
Determine maximum APC code word under current operating temperature;
The indication transmitter carries out power configuration according to described APC code word.
Preferably, power output controlled comprise: open Loop Power control, carry out according to following steps:
Determine under current operating temperature the APC code word corresponding with target output;
The indication transmitter carries out power configuration according to described APC code word.
Preferably, in the described table of comparisons, the corresponding power grade of an APC code word, the power output variable quantity is corresponding with the variable quantity of power grade.
Preferably, power output controlled comprise: closed power control, carry out according to following steps:
Receive the order of the increase power output of network side transmission;
Inquire about the described table of comparisons, determine maximum power level under current operating temperature;
Whether the power grade after the judgement increase power output is more than or equal to described maximum power level, if the indication transmitter carries out power configuration according to the APC code word corresponding with this maximum power level; Otherwise, the indication transmitter according to increase power output after the corresponding APC code word of power grade carry out power configuration.
The present invention discloses a kind of output control device, comprising:
The information reference unit is used to store the reference information that sets in advance; Described reference information is used in reference to and is shown under the various working temperatures corresponding relation of APC code word and real output; The difference of each adjacent temperature is Δ C, and described Δ C is that power output increases or the temperature gap of correspondence when reducing preset value;
Temperature detecting unit is used to detect current operating temperature;
Information process unit is used for the indication of the reference information of described information reference unit, determines under current working temperature and the corresponding APC code word of target output, and the indication transmitter carries out power configuration according to this APC code word.
Preferably, described reference information is a comparison list, this table of comparisons comprise be used to indicate same APC code word under various working temperatures with the information of the corresponding relation of real output, and same power output under various working temperatures with the information of the corresponding relation of APC code word.
Preferably, described information process unit comprises:
First processing unit, be used to know the detected working temperature of temperature detecting unit after, inquire about the reference information of described information reference unit, determine maximum APC code word under this working temperature, the indication transmitter carries out power configuration according to this maximum APC code word.
Preferably, in the described table of comparisons, the corresponding power grade of an APC code word, the power output variable quantity is corresponding with the variable quantity of power grade;
Described information process unit comprises:
Second processing unit is used to receive the order that increases power output, after knowing the detected working temperature of temperature detecting unit, inquires about the described table of comparisons, determines maximum power level; And whether the power grade after the judgement increase power output is more than or equal to described maximum power level, if the indication transmitter carries out power configuration according to the APC code word corresponding with this maximum power level; Otherwise, the indication transmitter according to increase power output after the corresponding APC code word of power grade carry out power configuration.
The present invention also discloses a kind of portable terminal, comprise output control device and transmitter, described output control device comprises:
The information reference unit is used to store the reference information that sets in advance; Described reference information is used in reference to and is shown under the various working temperatures corresponding relation of APC code word and real output; The difference of each adjacent temperature is Δ C, and described Δ C is that power output increases or the temperature gap of correspondence when reducing preset value;
Temperature detecting unit is used to detect current operating temperature;
Information process unit is used for the indication of the reference information of described information reference unit, determines under current working temperature and the corresponding APC code word of target output, and the indication transmitter carries out power configuration according to this APC code word.
Preferably, described reference information is a comparison list, this table of comparisons comprise be used to indicate same APC code word under various working temperatures with the information of the corresponding relation of real output, and same power output under various working temperatures with the information of the corresponding relation of APC code word.
Preferably, described information process unit comprises:
First processing unit, be used to know the detected working temperature of temperature detecting unit after, inquire about the reference information of described information reference unit, determine maximum APC code word under this working temperature, the indication transmitter carries out power configuration according to this maximum APC code word.
Preferably, in the described table of comparisons, the corresponding power grade of an APC code word, the power output variable quantity is corresponding with the variable quantity of power grade;
Described information process unit comprises:
Second processing unit is used to receive the order that increases power output, after knowing the detected working temperature of temperature detecting unit, inquires about the described table of comparisons, determines maximum power level; And whether the power grade after the judgement increase power output is more than or equal to described maximum power level, if the indication transmitter carries out power configuration according to the APC code word corresponding with this maximum power level; Otherwise, the indication transmitter according to increase power output after the corresponding APC code word of power grade carry out power configuration.
From above-mentioned technical scheme as can be seen, compared with prior art, include in the reference information of the present invention to be used in reference to and be shown under the various working temperatures corresponding relation of APC code word and real output; And the difference of each adjacent temperature is Δ C in the reference information, and described Δ C is that power output increases or the temperature gap of correspondence when reducing preset value.Therefore can draw the APC code word corresponding directly with reference to described reference information with power output.Need not operating personnel and carry out operations such as temperature-compensating, relatively more directly perceived, operation is simple.And, need not to require power output to be desirable linearity with the variation of temperature relation, even linear relatively poor, this programme also can carry out.In addition, the difference of adjacent two power outputs of listing in the reference information of adjacent power output equals described default value, described default value can be provided with according to the APC stepping of terminal sender, difference according to the APC stepping of sender is set to different numerical value, adapt to various sender performances, reduce the design difficulty and the complexity of sender.
Description of drawings
Fig. 1 is the schematic diagram of linear change with temperature for power output;
Fig. 2 is the flow chart of the embodiment one of a kind of Poewr control method of the present invention;
Fig. 3 is the schematic diagram of nonlinear change with temperature for power output;
Fig. 4 is the structural representation of the embodiment one of a kind of output control device of the present invention;
Fig. 5 is the structural representation of the embodiment two of a kind of output control device of the present invention;
Fig. 6 is the structural representation of the embodiment three of a kind of output control device of the present invention;
Fig. 7 is the structural representation of the embodiment one of a kind of portable terminal of the present invention;
Fig. 8 is the structural representation of the embodiment two of a kind of portable terminal of the present invention;
Fig. 9 is the structural representation of the embodiment three of a kind of portable terminal of the present invention.
Embodiment
In order to solve the problem that prior art exists, the invention provides a kind of improved technical scheme, its basic thought is:
Make reference information in advance, be used to indicate under the different operating temperature, the corresponding relation of APC control code word and real output.Terminal at first detects current working temperature when carrying out power output control, then according to the indication of described reference information, proper A PC control code word is set.
In order to make those skilled in the art better understand technical solution of the present invention, be described in detail below in conjunction with drawings and Examples.
Please refer to Fig. 2, be the flow chart of the embodiment one of a kind of Poewr control method of the present invention.
Specifically may further comprise the steps:
Step S101: detect current operating temperature.
Step S102:, determine under current operating temperature the APC code word corresponding with target output with reference to the reference information that sets in advance.
The described reference information that sets in advance presents with the form of form usually, and is as shown in table 6.
Table 6
Above-mentioned table 6 has clearly been indicated under different working temperatures, and the power output of each APC code word correspondence comprises following several indication information:
1, under with a kind of working temperature, the corresponding relation of APC code word and power output;
2, under various working temperatures, the corresponding relation of same APC code word and power output;
3, under various working temperatures, the corresponding relation of same power output and APC code word.
Under same working temperature, be one to one between power grade, APC code word and the power output, for example, equal the production test temperature T in working temperature
0℃ the time, power grade L23, APC code word A23 are corresponding one by one with power output 23dBm.
Above-mentioned table 6 draws according to temperature test in advance, each working temperature ..., T
-2℃, T
-1℃, T
0℃, T
1℃, T
2℃ ..., temperature gap between any two is the integral multiple of Δ ℃, the temperature gap of adjacent working temperature equals Δ ℃, as T
-1℃-T
-2℃=T
0℃-T
-1℃=T
1℃-T
0℃=...=T
n℃-T
N-1℃, that is to say that power output and temperature are linear.Δ ℃ increases for power output or when reducing default value, the variable quantity of corresponding working temperature.Show in the table 6 that described default value is 1dB, that is to say, same APC code word, when temperature raise or reduce Δ ℃, its corresponding power output correspondingly reduced or increases 1dB, and for same APC code word, terminal is at T
1℃ the time power output than at T
0℃ the time the little 1dB of power output, at T
2℃ the time power output than at T
1℃ the time little 1dB.
Need to prove that described power output and temperature relation also can be non-linear, as shown in Figure 3.Each working temperature ..., T
-2℃, T
-1℃, T
0℃, T
1℃, T
2℃ ..., the difference (Δ of adjacent working temperature
n℃=T
N+1℃-T
n℃) and unequal, also be ... ≠ T
-1℃-T
-2℃ ≠ T
0℃-T
-1℃ ≠ ..., Δ
n℃ be illustrated under the situation of corresponding same APC code word, when the power output of terminal changes 1dB, the variable quantity of working temperature.
The maximum APC code word that one correspondence is all arranged under each temperature is as in the production test temperature T
0℃ the time, maximum APC code word is A
23, at T
3℃ the time, maximum APC code word is A
26, at T
-2℃ the time, maximum APC code word is A
21
Need to prove that described default value can be relevant according to the APC power stepping of sender, if the sender minimum step is 1dB, described default value is set to 1dB, if the sender minimum step is 0.5dB, described default value is set to 0.5dB.
With reference to table 6, determine under current operating temperature the APC code word corresponding with target output.For example, current working temperature is T
0℃ situation under, if when wanting to export numerical value and equaling the power of 21dBm, question blank 6 can determine that corresponding APC code word is " A21 ", in like manner, if temperature is T
1℃, it is the power of exportable identical numerical value for " A22 " that the APC code word is set.
Step S103: the indication transmitter carries out power configuration according to described APC code word, to export described target output.
The embodiment of the invention is passed through temperature test in advance, by the reference information that sets in advance: comprise the same APC code word of indication under different temperatures with the corresponding relation of each power output, and, same power output under different temperatures with the information of the corresponding relation (corresponding relation of the variable quantity of APC code word variable quantity and working temperature) of APC code word, carry out power output control, compared with prior art, have following characteristics and advantage:
--terminal is measured current operating temperature after determining target output, according to above-mentioned corresponding relation, can draw corresponding APC code word.Be provided with according to this APC code word, power output is controlled.Compared with prior art, in the embodiment of the invention, terminal all can rely on lookup table mode to carry out to the control of power output, and is simple.
--owing to be to adopt the method for tabling look-up, need not to carry out Temperature Compensation, so need not to require power output to be desirable linearity with the variation of temperature relation, even linear relatively poor, this programme also can carry out;
--the power output difference of listing in the reference information between any two is the multiple of default value, and the difference of adjacent two power outputs equals described default value.Described default value can be provided with according to the APC stepping of terminal sender, difference according to the APC stepping of sender is set to different numerical value, for example 1dB, 0.5dB, 0.25dB etc. adapt to various sender performances, help reducing the design difficulty and the complexity of sender.
--concern with variation of temperature under the situation of the linearity that is desirable in power output, only need calibrate that other power outputs are determined in the mode of match with the variation of temperature relation to maximum power.
When terminal is carried out power control, need to carry out maximum transmission power control, open Loop Power control and closed power control generally speaking, introduce method and process that terminal is carried out maximum transmission power control, open Loop Power control and closed power control below respectively:
A, maximum transmission power control
Terminal at first detects current working temperature,, determines under the current operating temperature that maximum APC code word can obtain required maximum transmission power with this APC code word configuration with reference to above-mentioned table 6.
Need to prove that in the embodiment of the invention, the production test calibration is selected with the power output benchmark of 23dBm as maximum, rather than the 24dBm of code requirement, this is because if select 24dBm for use, then among code requirement ± 1/-3dBm ± surplus of 1dBm is less, possibly can't satisfy.And if select 23dBm for use, then have ± surplus of 2dBm, can satisfy code requirement fully.
B, open Loop Power control
Open Loop Power control has two kinds of processing modes:
First kind of mode is: do not consider variation of temperature since the standard divided ring require broad, by the inquiry reference information, the APC code word corresponding with target output during directly according to production test temperature T 0 is provided with and can satisfies code requirement.For instance, if terminal is launched with-10dBm power by calculate needing, direct inquiry described reference information (table 6) then with-APC code word A-10 that 10dBm power is corresponding, is provided with and gets final product during selection production test temperature T 0.
When carrying out power control in this manner, can't accurately control power output.
The second way is: at first testing temperature of terminal, inquiry reference information (table 6) is determined under this working temperature, with the corresponding APC code word of target output power controlling, gets final product according to this code word setting.
This mode has been considered the influence that temperature contrast is brought power output, thereby has guaranteed the accuracy of power control.
C, closed power control
At first testing temperature of terminal is determined corresponding maximum APC code word Amax (corresponding power grade L
Max), suppose that the present APC code word of terminal is As (corresponding power grade Ls), if the network side transmitting order to lower levels is " UP " 3dB, terminal is calculated and judgement L
(s+3)Whether power grade is greater than or equal to L
Max, if be greater than or equal to L
Max, then with L
MaxCorresponding A
MaxConfiguration sends, if less than L
Max, then with L
(s+3)Power grade corresponding A PC sign indicating number sends, and guarantees that transmitted power does not exceed peak power output.
Suppose that current operating temperature is T
2℃, current power grade is L21, then terminal is after receiving the order (" UP " 3dB) that network side issues, content shown in the reference table 6, the power grade of judging peak power output 23dBm correspondence is L25, and L (21+3)=L24 is lower than L25, and then the A24 with the L24 correspondence is configured transmission.If current power grade is L23, because at T
2℃ the time, the power grade of peak power output 23dBm correspondence is L25, and L (23+3)=L26 is higher than L25, then the A25 with the L25 correspondence is configured transmission.
When if the network side transmitting order to lower levels is " DOWN ", then do not need above-mentioned judgement.Closed power temperature detection that control is done only is used for determining maximum APC code word, to guarantee that transmitted power does not exceed peak power output.
The present invention provides a kind of output control device simultaneously.
Please refer to Fig. 4, be the structural representation of the embodiment one of a kind of output control device of the present invention.
Output control device comprises: information reference unit 111, temperature detecting unit 112 and information process unit 113.
The reference information that 111 storages of described information reference unit set in advance.Described reference information is used in reference to and is shown under the various working temperatures corresponding relation of APC code word and real output; The difference of each adjacent temperature is Δ C, and described Δ C is that power output increases or the temperature gap of correspondence when reducing preset value; Described reference information presents with the form of form usually, and is as shown in table 6.
The course of work and the operation principle of this function control device are as follows:
Described temperature detecting unit 112 testing temperature, and will be used to indicate the information of working temperature to offer information process unit 113, after described information process unit 113 is determined current operating temperature, by the information in the Query Information reference unit 113, determine and the corresponding APC code word of target output that the indication transmitter carries out power configuration according to this APC code word.
This function control device can carry out maximum transmission power control, open Loop Power control and closed power control, and concrete control procedure and control method partly have detailed introduction at said method, simply introduce at this.
When carrying out maximum transmission power control, after described information process unit 113 is known current operating temperature, by the reference information in the Query Information reference unit 113, determine APC code word maximum under this working temperature, the indication transmitter carries out power configuration according to this APC code word.
Need to prove that in the embodiment of the invention, the production test calibration is selected with the power output benchmark of 23dBm as maximum, rather than the 24dBm of code requirement, this is because if select 24dBm for use, then among code requirement ± 1/-3dBm ± surplus of 1dBm is less, possibly can't satisfy.And if select 23dBm for use, then have ± surplus of 2dBm, can satisfy code requirement fully.
When carrying out open Loop Power control, there is dual mode:
First kind of mode, described information process unit 113 can be known current operating temperature, in other words, can consider current operating temperature, the broad that requires owing to the standard divided ring, directly the reference information in the Query Information reference unit 111 is directly selected the APC code word corresponding with target output, and the indication transmitter carries out power configuration according to this APC code word and can satisfy code requirement.For instance, if terminal launch with-10dBm power by calculate needing, direct inquiry described reference information (table 6) then, selection and-APC code word that 10dBm power is corresponding are provided with and get final product.
When carrying out power control in the manner described above, can't accurately control power output.
The second way, the reference information in the described information process unit 113 Query Information reference units 111 is determined under current operating temperature, with the corresponding APC code word of target output power controlling, the indication transmitter carries out power configuration according to this code word.This mode has been considered the influence that temperature contrast is brought power output, thereby has guaranteed the accuracy of power control.
When carrying out closed power control, the reference information in the described information process unit 113 Query Information reference units 111 is determined corresponding maximum APC code word Amax (corresponding power grade L
Max), suppose that the present APC code word of terminal is As (corresponding power grade Ls), if the network side transmitting order to lower levels is " UP " 3dB, described information process unit 113 calculates and judgement L
(s+3)Whether power grade is greater than or equal to L
Max, if be greater than or equal to L
Max, then indicate transmitter with L
MaxCorresponding A
MaxCarry out power configuration, and send, if less than L
Max, then indicate transmitter with L
(s+3)Power grade corresponding A PC sign indicating number carries out power configuration, and sends, and guarantees that transmitted power does not exceed peak power output.
Suppose that current operating temperature is T
2℃, current power grade is L21, then after receiving the order (" UP " 3dB) that network side issues, content shown in the reference table 6, the power grade of judging peak power output 23dBm correspondence is L25, and L (21+3)=L24 is lower than L25, then to indicate transmitter to carry out power configuration and transmission with the A24 of L24 correspondence.If current power grade is L23, because at T
2℃ the time, the power grade of peak power output 23dBm correspondence is L25, and L (23+3)=L26 is higher than L25, then indicates transmitter to carry out power configuration and transmission with the A25 of L25 correspondence.
When if the network side transmitting order to lower levels is " DOWN ", then do not need above-mentioned judgement.Closed power temperature detection that control is done only is used for determining maximum APC code word, to guarantee that transmitted power does not exceed peak power output.
Fig. 5 and Fig. 6 show the embodiment two of a kind of output control device of the present invention and the structural representation of embodiment three respectively.
In embodiment two, described information process unit 113 only comprises:
In embodiment three, described information process unit 113 only comprises:
Second processing unit 115 is used to receive the order that increases power output, after knowing temperature detecting unit 112 detected working temperatures, inquires about the reference information (table 6) of described information reference unit 111, determines maximum power level; And whether the power grade after the judgement increase power output is more than or equal to described maximum power level, if the indication transmitter carries out power configuration according to the APC code word corresponding with this maximum power level; Otherwise, the indication transmitter according to increase power output after the corresponding APC code word of power grade carry out power configuration.
The present invention discloses a kind of portable terminal.
Please refer to Fig. 7, be the structural representation of the embodiment one of a kind of portable terminal of the present invention.
A kind of portable terminal comprises output control device 100 and transmitter 200, and described output control device 100 comprises: information reference unit 111, temperature detecting unit 112 and information process unit 113.
The function of the course of work of this output control device 100 and fundamental diagram and each component units has a detailed description at preamble, does not repeat them here.
Fig. 8 and Fig. 9 show the embodiment two of a kind of portable terminal of the present invention and the structural representation of embodiment three respectively.
In embodiment two, described information process unit 113 only comprises:
In embodiment three, described information process unit 113 only comprises:
Second processing unit 115 is used to receive the order that increases power output, after knowing temperature detecting unit 112 detected working temperatures, inquires about the reference information (table 6) of described information reference unit 111, determines maximum power level; And whether the power grade after the judgement increase power output is more than or equal to described maximum power level, if indication transmitter 200 carries out power configuration according to the APC code word corresponding with this maximum power level; Otherwise, indication transmitter 200 according to increase power output after the corresponding APC code word of power grade carry out power configuration.
Portable terminal of the present invention is measured current operating temperature after determining target output, according to above-mentioned corresponding relation, can draw corresponding APC code word.Be provided with according to this APC code word, power output is controlled.Compared with prior art, in the embodiment of the invention, portable terminal all can rely on lookup table mode to carry out to the control of power output, and is simple.And, owing to be to adopt the method for tabling look-up, need not to carry out Temperature Compensation, so need not to require power output to be desirable linearity with the variation of temperature relation.The power output of listing in reference information difference between any two is the multiple of default value in addition, and the difference of adjacent two power outputs equals described default value.Described default value can be provided with according to the APC stepping of terminal sender, difference according to the APC stepping of sender is set to different numerical value, for example 1dB, 0.5dB, 0.25dB etc. adapt to various sender performances, reduce the design difficulty and the complexity of sender.
More than disclosed only be preferred implementation of the present invention; but the present invention is not limited thereto; any those skilled in the art can think do not have a creationary variation, and, all should drop in protection scope of the present invention not breaking away from some improvements and modifications of being done under the principle of the invention prerequisite.
Claims (14)
1, a kind of Poewr control method is characterized in that, comprising:
Determine current operating temperature by temperature detection;
The reference information that sets in advance of inquiry is determined under current operating temperature and the corresponding APC code word of target output, and power output is controlled; Described reference information is used in reference to and is shown under the various working temperatures corresponding relation of APC code word and real output; The difference of each adjacent temperature is △ C, and described △ C is that power output increases or the temperature gap of correspondence when reducing preset value.
2, the method for claim 1, it is characterized in that, described reference information is a comparison list, this table of comparisons comprise be used to indicate same APC code word under various working temperatures with the information of the corresponding relation of real output, and same power output under various working temperatures with the information of the corresponding relation of APC code word.
3, method as claimed in claim 2 is characterized in that, when target output is peak power output, carries out according to following steps:
Determine maximum APC code word under current operating temperature;
The indication transmitter carries out power configuration according to described APC code word.
4, method as claimed in claim 2 is characterized in that, power output is controlled comprise: open Loop Power control, carry out according to following steps:
Determine under current operating temperature the APC code word corresponding with target output;
The indication transmitter carries out power configuration according to described APC code word.
5, method as claimed in claim 2 is characterized in that, in the described table of comparisons, and the corresponding power grade of an APC code word, the power output variable quantity is corresponding with the variable quantity of power grade.
6, method as claimed in claim 5 is characterized in that, power output is controlled comprise: closed power control, carry out according to following steps:
Receive the order of the increase power output of network side transmission;
Inquire about the described table of comparisons, determine maximum power level under current operating temperature;
Whether the power grade after the judgement increase power output is more than or equal to described maximum power level, if the indication transmitter carries out power configuration according to the APC code word corresponding with this maximum power level; Otherwise, the indication transmitter according to increase power output after the corresponding APC code word of power grade carry out power configuration.
7, a kind of output control device is characterized in that, comprising:
The information reference unit is used to store the reference information that sets in advance; Described reference information is used in reference to and is shown under the various working temperatures corresponding relation of APC code word and real output; The difference of each adjacent temperature is △ C, and described △ C is that power output increases or the temperature gap of correspondence when reducing preset value;
Temperature detecting unit is used to detect current operating temperature;
Information process unit is used for the indication of the reference information of described information reference unit, determines under current working temperature and the corresponding APC code word of target output, and the indication transmitter carries out power configuration according to this APC code word.
8, device as claimed in claim 7, it is characterized in that, described reference information is a comparison list, this table of comparisons comprise be used to indicate same APC code word under various working temperatures with the information of the corresponding relation of real output, and same power output under various working temperatures with the information of the corresponding relation of APC code word.
9, device as claimed in claim 8 is characterized in that, described information process unit comprises:
First processing unit, be used to know the detected working temperature of temperature detecting unit after, inquire about the reference information of described information reference unit, determine maximum APC code word under this working temperature, the indication transmitter carries out power configuration according to this maximum APC code word.
10, device as claimed in claim 8 is characterized in that, in the described table of comparisons, and the corresponding power grade of an APC code word, the power output variable quantity is corresponding with the variable quantity of power grade;
Described information process unit comprises:
Second processing unit is used to receive the order that increases power output, after knowing the detected working temperature of temperature detecting unit, inquires about the described table of comparisons, determines maximum power level; And whether the power grade after the judgement increase power output is more than or equal to described maximum power level, if the indication transmitter carries out power configuration according to the APC code word corresponding with this maximum power level; Otherwise, the indication transmitter according to increase power output after the corresponding APC code word of power grade carry out power configuration.
11, a kind of portable terminal comprises output control device and transmitter, it is characterized in that, described output control device comprises:
The information reference unit is used to store the reference information that sets in advance; Described reference information is used in reference to and is shown under the various working temperatures corresponding relation of APC code word and real output; The difference of each adjacent temperature is △ C, and described △ C is that power output increases or the temperature gap of correspondence when reducing preset value;
Temperature detecting unit is used to detect current operating temperature;
Information process unit is used for the indication of the reference information of described information reference unit, determines under current working temperature and the corresponding APC code word of target output, and the indication transmitter carries out power configuration according to this APC code word.
12, portable terminal as claimed in claim 11, it is characterized in that, described reference information is a comparison list, this table of comparisons comprise be used to indicate same APC code word under various working temperatures with the information of the corresponding relation of real output, and same power output under various working temperatures with the information of the corresponding relation of APC code word.
13, portable terminal as claimed in claim 12 is characterized in that, described information process unit comprises:
First processing unit, be used to know the detected working temperature of temperature detecting unit after, inquire about the reference information of described information reference unit, determine maximum APC code word under this working temperature, the indication transmitter carries out power configuration according to this maximum APC code word.
14, portable terminal as claimed in claim 12 is characterized in that, in the described table of comparisons, and the corresponding power grade of an APC code word, the power output variable quantity is corresponding with the variable quantity of power grade;
Described information process unit comprises:
Second processing unit is used to receive the order that increases power output, after knowing the detected working temperature of temperature detecting unit, inquires about the described table of comparisons, determines maximum power level; And whether the power grade after the judgement increase power output is more than or equal to described maximum power level, if the indication transmitter carries out power configuration according to the APC code word corresponding with this maximum power level; Otherwise, the indication transmitter according to increase power output after the corresponding APC code word of power grade carry out power configuration.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710177344XA CN101436887A (en) | 2007-11-14 | 2007-11-14 | Power control method, apparatus and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710177344XA CN101436887A (en) | 2007-11-14 | 2007-11-14 | Power control method, apparatus and mobile terminal |
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| CN101436887A true CN101436887A (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA200710177344XA Pending CN101436887A (en) | 2007-11-14 | 2007-11-14 | Power control method, apparatus and mobile terminal |
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| CN101833342A (en) * | 2010-03-12 | 2010-09-15 | 华为终端有限公司 | Terminal product and thermal control method thereof |
| CN102149178A (en) * | 2010-02-08 | 2011-08-10 | 联芯科技有限公司 | Method and device for compensating temperature of mobile terminal power |
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