CN100395964C - Power amplifying method - Google Patents
Power amplifying method Download PDFInfo
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- CN100395964C CN100395964C CNB2004100320773A CN200410032077A CN100395964C CN 100395964 C CN100395964 C CN 100395964C CN B2004100320773 A CNB2004100320773 A CN B2004100320773A CN 200410032077 A CN200410032077 A CN 200410032077A CN 100395964 C CN100395964 C CN 100395964C
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Abstract
The present invention relates to a mobile communication technique, and particularly to discloses a power amplifying method. The present invention can be favorably used together with a developed power amplifying unit to really ensure the balance between upstream communication and downstream communication in regions needing wide coverage, such as rural regions, etc., and accordingly, the normal operation of a mobile communication network can be ensured. The power amplifying method comprises the following steps: A. determining a difference between the detecting voltage value of average internal power amplifying output and a preset value; B. judging whether the difference between the detecting voltage value of average internal power amplifying output and the factory set value of the detecting voltage of internal power amplifying output is smaller than a maximum permissible error, if true, then the process stops, else a step C is executed; C. regulating the control voltage value of an attenuator according to the difference between the detecting voltage value of internal power amplifying output and the factory set value of the detecting voltage of internal power amplifying output to reduce the difference to the maximum permissible error.
Description
Technical field
The present invention relates to mobile communication technology, particularly the method for up and down power balance between base station and the mobile phone.
Background technology
In mobile communication system, realize that the prerequisite of normal talking is that base station and mobile phone can both correctly be received the information that the other side sends, so the up-downgoing balance is a quality index of mobile communications network.
Wherein, the direction of mobile phone is arrived in the descending base station that is meant, and the up direction that is meant mobile phone to the base station.The up-downgoing EQUILIBRIUM CONDITION is the summation that base station transmitting power equals mobile phone transmitting power and base station and mobile phone sensitivity difference, i.e. the difference of base station transmitting power=mobile phone transmitting power+base station and mobile phone sensitivity.If can satisfy above-mentioned condition, can think the up-downgoing balance in this case,, can both guarantee proper communication even cover the edge in the sub-district.This shows that the up-downgoing balance is very useful for proper communication.In order to reach wide covering, effect cheaply, when the regional networking in limit, should be specifically noted that and reduce website quantity, improve coverage.
For up-downgoing is uneven, can be divided into two kinds of situations, a kind of is because the transmitting power of base station is too small etc. former thereby make cell coverage area smaller, just claims it is the descending limited up-downgoing imbalance that causes; Another kind is because uplink interference is excessive etc. former thereby make cell coverage area smaller, just claims it is the up limited up-downgoing imbalance that causes.For guaranteeing the normal operation of mobile communications network, both of these case all will in time solve.
Several base station transceivers (Transmitter-Receiver, be called for short " TRX ") that are usually used in the base station system are arranged at present, and transmitting power has two kinds of 40W and 60W.In actual applications, the power loss of their combiner-divider and frame feeder line etc., cause transmitting power smaller, though do not require that in coverage very big area can satisfy the up-downgoing balance, yet in the wide area that covers of ask for something, as the rural area etc., base station transmitting power does not often reach requirement, cause the descending limited up-downgoing imbalance that causes, become and realize the wide bottleneck that covers.
On the other hand, can affirm that under the situation of configuration combiner-divider, when the transmitting power of base station transceiver during at 80W, up-downgoing can reach balance by measuring and calculating.In view of the above, the applicant has dropped into solving the up-downgoing STUDY ON THE EQUILIBRIUM in the wide covering.Developed a kind of power amplification unit (Power Booster Unit now, be called for short " PBU "), this PBU mainly comprises three parts: PBU power amplifier module, power amplifier monitoring unit (Booster Management Unit is called for short " BMU ") and PBU Control Software.Wherein, the PBU power amplifier module is used under the control of BMU unit the signal of importing being carried out power amplification and output; The BMU unit is used for the analog voltage signal collection, passes to the PBU Control Software, and the PBU power amplifier module is controlled by control signal according to the instruction that the PBU Control Software provides.The annexation of this PBU and combiner-divider and TRX as shown in Figure 1, the power output of TRX is amplified via PBU, sends into combiner-divider again, like this, the transmitting power of base station can guarantee about 80W.
In the PBU that is developed, the PBU power amplifier module provides PBU input power (being the TRX power output) detecting circuit, power output detecting circuit and three aanalogvoltages of inner 60W power amplifier power output detecting circuit, and wherein the internal power detecting circuit is mainly used in amplitude control.BMU finishes the unit analog voltage signal collection, and the detecting circuit data are passed to the PBU Control Software.The PBU Control Software is kept at three default initial values in the PBU unit according to the input voltage size of these three monitorings in real time with when dispatching from the factory, according to power-magnifying method, output amplitude and phase control voltage value by BMU unit drives attenuator and phase shifter, make power amplifier module output firm power.
In actual applications, there is following problem in such scheme: for above-mentioned power amplification unit, lack a kind of power-magnifying method that can cooperating fine with it.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of power-magnifying method, the power amplification unit that makes it possible to and developed is worked together well, really in the wide area that covers of ask for something, as rural area etc., guarantee the balance of up-downgoing, thereby guarantee the normal operation of mobile communications network.
For achieving the above object, the invention provides a kind of power-magnifying method, be used for the up and down power coupling, comprise following steps: A determines the poor of average internal power amplifier output detecting circuit value and predetermined value;
Whether B judges the difference of described average internal power amplifier output detecting circuit value and predetermined value less than the limits of error, if then process finishes, otherwise, execution in step C;
C is poor according to described average internal power amplifier output detecting circuit value and predetermined value, adjusts the control magnitude of voltage of attenuator, and the difference of the average internal power amplifier being exported detecting circuit value and predetermined value is reduced to less than the described limits of error.
Wherein, described steps A also comprises following steps:
A1 reads in one group of inner power amplifier output detecting circuit value;
A2 calculates the mean value of described one group of inner power amplifier output detecting circuit value, and described mean value is average internal power amplifier output detecting circuit value;
A3 calculates the poor of described average average internal power amplifier output detecting circuit value and predetermined value.
Described predetermined value is the inside power amplifier output detecting circuit factory setting value that is arranged in the power amplification unit.
The present invention also provides a kind of power-magnifying method, comprises following steps:
M is made as intermediateness with current phase control state, and the average gain of the power detection voltage under the current phase control state is saved as intermediate gain;
Whether N judges the difference of described intermediate gain and predetermined value less than maximum permissible value, if then flow process finishes, otherwise, enter step O;
O adjusts the phase control state to the first from left step, a right step state, the average gain of preserving the power detection voltage under the first from left step, the right step phase control state respectively is left side gain, right gain, and in described intermediate gain, left side gain and right gain, determine maximum, phase shifter is controlled magnitude of voltage adjust to corresponding described maximum, and return step M.
Wherein, in step O, the average gain that the corresponding phase shifter control of left side gain magnitude of voltage obtains when reducing a step value; The average gain that the corresponding phase shifter control of right gain magnitude of voltage obtains when increasing a step value.
By relatively finding, technical scheme difference with the prior art of the present invention is, a kind of new power-magnifying method has been proposed, by adjusting attenuator control magnitude of voltage, the difference that average internal power amplifier output detecting circuit value and inner power amplifier are exported detecting circuit factory setting value is reduced to the method less than the described limits of error, or, reach actual power output as far as possible near the purpose of set point by making maximum average gain progressively near the mode of predetermined value.
Difference on this technical scheme has brought comparatively significantly beneficial effect, promptly by guaranteeing the balance of up and down power more well, realizes extensively covering.
Description of drawings
Fig. 1 is the annexation schematic diagram of PBU and combiner-divider and TRX;
Fig. 2 is the schematic flow sheet of power-magnifying method according to an embodiment of the invention;
Fig. 3 is the schematic flow sheet of power-magnifying method according to another embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Generally speaking, the power-magnifying method of above-mentioned PBU Control Software is divided into two parts: amplitude control and phase control.Realizing in the process of power amplification by amplitude control, input variable is current attenuator control voltage, inner power amplifier output detecting circuit factory setting value and current inner power amplifier output detecting circuit, by adjusting the control magnitude of voltage of attenuator, make current inner power amplifier output detecting circuit approach inner power amplifier factory setting value.
Specifically, according to the inside power amplifier output detecting circuit value of actual acquisition, compare with inner power amplifier output detecting circuit factory setting value, if error in normal range (NR), is not then carried out the amplitude adjustment; If error exceeds normal range (NR),, adjust the control voltage of attenuator then according to both errors.The amplitude control flow is illustrated in fig. 2 shown below.At first in step 110: read in one group of inner power amplifier output detecting circuit value.Specifically, according to certain hour at interval, one group of inner power amplifier output detecting circuit value of continuous acquisition.Then enter step 120: calculate described one group of average internal power amplifier output detecting circuit value.After this enter step 130: calculate described average internal power amplifier output detecting circuit value and predetermined value, promptly inner power amplifier is exported the poor of detecting circuit factory setting value.Wherein, inner power amplifier output detecting circuit factory setting value is that PBU is kept at the predefined initial value among the PBU when dispatching from the factory.After this enter step 140: whether the difference of judging described average internal power amplifier output detecting circuit value and inner power amplifier output detecting circuit factory setting value is less than the limits of error.Wherein, the described limits of error can be set as required.In this step, if judgement average internal power amplifier is exported the difference of detecting circuit value and inner power amplifier output detecting circuit factory setting value less than the limits of error, then process finishes.Otherwise,, then enter step 150 if greater than the limits of error.
In step 150, the limits of error have been exceeded owing in a last step, judge the difference of average internal power amplifier output detecting circuit value and inner power amplifier output detecting circuit factory setting value, show and exceeded normal range (NR), therefore in this step, export the poor of detecting circuit factory setting value according to described average internal power amplifier output detecting circuit value and inner power amplifier, adjust the control magnitude of voltage of attenuator, the difference of the average internal power amplifier being exported detecting circuit value and inner power amplifier output detecting circuit factory setting value is reduced to less than the described limits of error.
The process that realizes power amplification by phase control is described below.The principle of phase control is, when the power amplifier phase equilibrium, increase a step value or reduce a step value on current phase control value, the synthetic gain of power amplifier utilizes the maximum mode of the synthetic gain of control to obtain the optimal value of phase control because the cause of radio frequency all will reduce.In addition, because there are coupling in amplitude control loop and phase control loop, so also will control to the frequency of amplitude control and phase control.
At first, gather one group of power output detecting circuit and input power detecting circuit, calculate average gain and preservation on this basis.Wherein, the power output detecting circuit is deducted the input power detecting circuit promptly obtain a yield value, one group of yield value is averaged, promptly obtain average gain.In addition, the phase control state that calculates average gain for the first time is set to intermediateness, and this average gain is set to intermediate gain.
After this, whether the difference of judging intermediate gain and factory setting value is less than maximum permissible value, if then do not need to carry out the phase place adjustment, the process end.If greater than, show that then difference has exceeded normal range (NR).
In this case, according to principle of the present invention, a first from left step and a right step state in above-mentioned intermediateness are measured one group of power output detecting circuit and input power detecting circuit respectively, calculate average gain thus respectively, and are set to " left side gain " and " right gain " respectively.Wherein, the first from left step state refers to that promptly phase shifter control magnitude of voltage reduces a step value; A right step state refers to that promptly phase shifter control magnitude of voltage increases a step value.
Then, in above-mentioned " intermediate gain ", " left side gain " and " right gain ", determine maximum, and phase shifter is controlled magnitude of voltage adjust to should maximum.
After this, restart first step again, until the difference of judging above-mentioned intermediate gain and factory setting value less than maximum permissible value.
Below with reference to Fig. 3, describe a embodiment in detail according to said method.As shown in the figure:, read in one group of power detection voltage and input power detecting circuit at first in step 210.After this enter step 220, calculate each yield value according to this group power detection voltage and input power detecting circuit, and calculating average gain, wherein, the average gain that obtains is for the first time saved as " intermediate gain ", if at current phase state be " a right step state ", then the average gain that obtains is saved as " right gain ", otherwise, if, then save as " left side gain " at " the first from left step state ".Current phase control state when obtaining in addition, " intermediate gain " is set to intermediateness.After this enter step 240: judge that current phase state is an intermediateness, or the first from left step state, or a right step state.
If judge it is intermediateness, then enter step 251, calculate intermediate gain and predetermined value, promptly the factory setting value is poor.The factory setting value is the initial value that sets in advance that is kept at when dispatching from the factory among the PBU.After this enter step 252, whether the difference of judging intermediate gain and factory setting value is less than maximum permissible value.If judge to be, then do not need to carry out the phase place adjustment, flow process finishes.If greater than maximum permissible value, then show to have exceeded normal range (NR), enter step 253.In step 253, phase shifter control magnitude of voltage increases by 1 step value, and current phase control state is set to a right step state.
If judge it is a right step state, then enter step 261, phase shifter control magnitude of voltage reduces 2 step values.After this enter step 262, current phase control state is set to the first from left step state.
If be judged to be the first from left step state, then enter step 271, phase shifter is controlled magnitude of voltage adjust to maximum gain.Here need to prove, in the present embodiment, as mentioned above as calculated and preserved " intermediate gain ", " left side gain " reach " right gain ", therefrom determine the gain of maximum, and phase shifter controlled magnitude of voltage adjust to corresponding above-mentioned maximum.After this enter step 272, current phase control state is set to intermediateness.
After step 254, step 262 and step 272, return step 210, less than maximum permissible value, promptly average gain is enough near the factory setting value up to the difference of judging average gain and factory setting value in step 252, and then flow process finishes.
Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (5)
1. a power-magnifying method is used for the up and down power coupling, it is characterized in that, comprises following steps:
A determines the poor of average internal power amplifier output detecting circuit value and predetermined value;
Whether B judges the difference of described average internal power amplifier output detecting circuit value and predetermined value less than the limits of error, if then process finishes, otherwise, execution in step C;
C is poor according to described average internal power amplifier output detecting circuit value and predetermined value, adjusts the control magnitude of voltage of attenuator, and the difference of the average internal power amplifier being exported detecting circuit value and predetermined value is reduced to less than the described limits of error.
2. power-magnifying method according to claim 1 is characterized in that, described steps A also comprises following steps:
A1 reads in one group of inner power amplifier output detecting circuit value;
A2 calculates the mean value of described one group of inner power amplifier output detecting circuit value, and described mean value is average internal power amplifier output detecting circuit value;
A3 calculates the poor of described average internal power amplifier output detecting circuit value and predetermined value.
3. power-magnifying method according to claim 1 and 2 is characterized in that, described predetermined value is the inside power amplifier output detecting circuit factory setting value that is arranged in the power amplification unit.
4. a power-magnifying method is characterized in that, comprises following steps:
M is made as intermediateness with current phase control state, and the average gain of the power detection voltage under the current phase control state is saved as intermediate gain;
Whether N judges the difference of described intermediate gain and predetermined value less than maximum permissible value, if then flow process finishes, otherwise, enter step O;
O adjusts the phase control state to the first from left step, a right step state, the average gain of preserving the power detection voltage under the first from left step, the right step phase control state respectively is left side gain, right gain, and in described intermediate gain, left side gain and right gain, determine maximum, phase shifter is controlled magnitude of voltage adjust to corresponding described maximum, and return step M.
5. power-magnifying method according to claim 4 is characterized in that, among the step O, and the average gain that the corresponding phase shifter control of left side gain magnitude of voltage obtains when reducing a step value; The average gain that the corresponding phase shifter control of right gain magnitude of voltage obtains when increasing a step value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100320773A CN100395964C (en) | 2004-03-31 | 2004-03-31 | Power amplifying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100320773A CN100395964C (en) | 2004-03-31 | 2004-03-31 | Power amplifying method |
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| CN1677889A CN1677889A (en) | 2005-10-05 |
| CN100395964C true CN100395964C (en) | 2008-06-18 |
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| CNB2004100320773A Expired - Fee Related CN100395964C (en) | 2004-03-31 | 2004-03-31 | Power amplifying method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101977022B (en) * | 2010-09-03 | 2014-07-16 | 中兴通讯股份有限公司 | Complementary-multiplicative power compensation method, device and communication equipment |
| CN104178622B (en) * | 2014-08-22 | 2016-06-29 | 重庆钢铁集团电子有限责任公司 | The step rate control method of regenerative walking-beam furnace |
| CN105423366B (en) * | 2015-12-29 | 2018-01-09 | 京信通信技术(广州)有限公司 | Microwave output power control device and method |
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| CN1156924A (en) * | 1995-12-30 | 1997-08-13 | 三星电子株式会社 | Device and method for automatically controlling transmission power |
| CN1170991A (en) * | 1996-01-17 | 1998-01-21 | 摩托罗拉公司 | Method and apparatus for average power control |
| EP1014570A2 (en) * | 1998-12-18 | 2000-06-28 | Nec Corporation | Burst-type transmission output power control apparatus capable of reducing phase errors |
| CN1280423A (en) * | 1999-07-08 | 2001-01-17 | 深圳市华为技术有限公司 | Method and device for controlling power envelope |
| CN1374764A (en) * | 2001-03-14 | 2002-10-16 | 上海大唐移动通信设备有限公司 | Closed-loop RF powder control device and method |
| CN1388651A (en) * | 2001-05-30 | 2003-01-01 | 华为技术有限公司 | Radio power synthesizer |
| WO2003039010A1 (en) * | 2001-10-29 | 2003-05-08 | Nec Corporation | Transmission apparatus and automatic gain control method thereof |
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2004
- 2004-03-31 CN CNB2004100320773A patent/CN100395964C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1156924A (en) * | 1995-12-30 | 1997-08-13 | 三星电子株式会社 | Device and method for automatically controlling transmission power |
| CN1170991A (en) * | 1996-01-17 | 1998-01-21 | 摩托罗拉公司 | Method and apparatus for average power control |
| EP1014570A2 (en) * | 1998-12-18 | 2000-06-28 | Nec Corporation | Burst-type transmission output power control apparatus capable of reducing phase errors |
| CN1280423A (en) * | 1999-07-08 | 2001-01-17 | 深圳市华为技术有限公司 | Method and device for controlling power envelope |
| CN1374764A (en) * | 2001-03-14 | 2002-10-16 | 上海大唐移动通信设备有限公司 | Closed-loop RF powder control device and method |
| CN1388651A (en) * | 2001-05-30 | 2003-01-01 | 华为技术有限公司 | Radio power synthesizer |
| WO2003039010A1 (en) * | 2001-10-29 | 2003-05-08 | Nec Corporation | Transmission apparatus and automatic gain control method thereof |
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| CN1677889A (en) | 2005-10-05 |
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