CN103686971B - The method and apparatus of LTE system uplink transmission power control - Google Patents
The method and apparatus of LTE system uplink transmission power control Download PDFInfo
- Publication number
- CN103686971B CN103686971B CN201210350300.3A CN201210350300A CN103686971B CN 103686971 B CN103686971 B CN 103686971B CN 201210350300 A CN201210350300 A CN 201210350300A CN 103686971 B CN103686971 B CN 103686971B
- Authority
- CN
- China
- Prior art keywords
- power
- gain amplifier
- baseband signal
- amplifier
- lte system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
- Transmitters (AREA)
Abstract
The invention provides a kind of method and apparatus of LTE system uplink transmission power control, wherein, by the way that the difference of the first gain amplifier and the second gain amplifier is limited within the maximum variable quantity of power amplifier, define the power difference between front and rear subframe, so that the amplitude of variation of power amplifier is smaller, in the interval of front and rear subframe（Usually CP）Just climbing or reducing for power is completed, the transmission quality of sub-frame of uplink, improves the reliability of the up transmission of LTE system before and after without influenceing.
Description
Technical field
The present invention relates to communication technical field, the method and dress of more particularly to a kind of LTE system uplink transmission power control
Put.
Background technology
In LTE（Long Term Evolution, Long Term Evolution）In system, the power of up transmission is because channel target
The difference of power, and front and rear subframe uplink scheduling resource difference, it can cause actual transmission power to have larger difference.Such as
PUCCH（Physical Uplink Control Channel, Physical Uplink Control Channel）And PUSCH（Physical
Uplink Shared Channel, Physical Uplink Shared Channel）In the resource bandwidth of occupancy, PUCCH is to fix a RB
（Resource Block, resource block, shared spectral bandwidth is 180KHz）, and PUSCH be then according to the number of scheduling of resource most
Conference is to 100RB（Shared spectral bandwidth is 18MHz）；In addition, in terms of the expectation received power of base station side, because PUCCH
Modulation system at most uses QPSK, and PUSCH then can use 64QAM using 16QAM and rear extended meeting, and it is desirable to receive
General configuration is that PUSCH can be higher than PUCCH in terms of power.In view of the difference of 2 points of the above, PUSCH and PUCCH transmit power
It is often very big.
In the prior art, uplink transmission power is achieved in that：Baseband signal/base band data power reaches as far as possible
It is maximum（That is baseband signal full scale）, to reduce power amplifier（Abbreviation power amplifier, also referred to as automatic power controller, APC）Put
Large gain, so as to reach power consumption less purpose when up transmission.But prior art is the simple efficiency for considering power amplifier,
Do not account for because between subframe the difference of transmit power to cause front and rear subframe power amplifier gain amplifier to change excessive, and radio-frequency devices because
It is not that gain amplifier difference is bigger, it is necessary to which stabilization time is longer before and after preferable device, power amplifier for the reason of cost.And
The 2/3G systems of LTE system and before in itself, which exist, does not reserve GP before and after difference, i.e. LTE system between subframe（Guard
Space, protection interval）To be protected to subframe, although there is CP before and after LTE system between subframe（Cyclic Prefix, are followed
Ring prefix）Protection, but CP is valid data in itself, and the GP in CP length system also compared with before is short（It is most short
Only 160Ts, i.e. 5.2 μ s）, and LTE system is because adaptive-bandwidth, so that the power difference introduced can be more big.
As can be seen here, in the implementation method of existing LTE system uplink transmission power control, the problem of having following：When
It is up when continuously transmitting, without enough protection intervals come climbing or reducing and protected for front and rear sub-frame power, thus will
Cause when continuously transmitting and front and rear sub-frame power difference is larger, power amplifier is unstable to be adversely affected to sending quality.
The content of the invention
It is existing to solve it is an object of the invention to provide a kind of method and apparatus of LTE system uplink transmission power control
Have in technology when up continuously transmit, without enough protection intervals come climbing or reducing and protected for front and rear sub-frame power
Shield, thus will cause when continuously transmitting and front and rear sub-frame power difference is larger, and power amplifier is unstable to be caused to sending quality
The problem of negative effect.
In order to solve the above technical problems, the present invention provides a kind of method of LTE system uplink transmission power control, including：
Obtain the maximum variable quantity of certain time internal strength rate amplifier；
Obtain the first gain amplifier, first gain amplifier be present frame when baseband signal power is maximum, it is required
The gain amplifier of power amplifier；
Obtain the second gain amplifier, second gain amplifier be next frame when baseband signal power is maximum, it is required
The gain amplifier of power amplifier；
Obtain the difference of the first gain amplifier and the second gain amplifier；
If the difference is more than the power of maximum variable quantity, adjustment present frame or next frame baseband signal so that difference
Less than or equal to maximum variable quantity.
Optionally, in the method that described LTE system uplink transmission power is controlled, the certain time is the μ of 3 μ s ~ 5.2
s。
Optionally, in the method that described LTE system uplink transmission power is controlled, the certain time be 12 μ s ~
16.67μs。
Optionally, in the method that described LTE system uplink transmission power is controlled, if the difference is more than maximum change
Amount, and the first gain amplifier is more than the second gain amplifier, then reduces the power of next frame baseband signal.
Optionally, in the method that described LTE system uplink transmission power is controlled, in addition to：
Power amplifier enters according to the power and target power of present frame baseband signal to the power of present frame baseband signal
Row amplification.
Optionally, in the method that described LTE system uplink transmission power is controlled, if the difference is more than maximum change
Amount, and the first gain amplifier is less than the second gain amplifier, then reduces the power of present frame baseband signal.
Optionally, in the method that described LTE system uplink transmission power is controlled, in addition to：
Power amplifier is according to the power and target power of the present frame baseband signal after reduction, to the present frame after reduction
The power of baseband signal is amplified.
Optionally, in the method that described LTE system uplink transmission power is controlled, displacement, multiplication or division are passed through
Adjust present frame or the power of next frame baseband signal.
The present invention also provides a kind of device of LTE system uplink transmission power control, including：
Scope acquisition module, the maximum variable quantity to obtain certain time internal strength rate amplifier；
First gain acquisition module, to obtain the first gain amplifier, first gain amplifier is that present frame is believed in base band
When number power is maximum, the gain amplifier of required power amplifier；
Second gain acquisition module, to obtain the second gain amplifier, second gain amplifier is that next frame is believed in base band
When number power is maximum, the gain amplifier of required power amplifier；
Comparison module, the difference to obtain the first gain amplifier and the second gain amplifier；
Processing module, when difference is more than maximum variable quantity, to adjust present frame or the work(of next frame baseband signal
Rate so that difference is less than or equal to maximum variable quantity.
Optionally, in the device that described LTE system uplink transmission power is controlled, the certain time is the μ of 3 μ s ~ 5.2
s。
Optionally, in the device that described LTE system uplink transmission power is controlled, the certain time be 12 μ s ~
16.67μs。
Optionally, in the device that described LTE system uplink transmission power is controlled, when difference is more than maximum variable quantity,
And first gain amplifier when being more than the second gain amplifier, the processing module reduces the power of next frame baseband signal.
Optionally, in the device that described LTE system uplink transmission power is controlled, in addition to：
Amplification module, by power and target power of the power amplifier according to present frame baseband signal, to present frame base
The power of band signal is amplified.
Optionally, in the device that described LTE system uplink transmission power is controlled, when difference is more than maximum variable quantity,
And first gain amplifier when being less than the second gain amplifier, the processing module reduces the power of present frame baseband signal.
Optionally, in the device that described LTE system uplink transmission power is controlled, in addition to：
Amplification module, it is right by power and target power of the power amplifier according to the present frame baseband signal after reduction
The power of present frame baseband signal after reduction is amplified.
Optionally, in the device that described LTE system uplink transmission power is controlled, the processing module by displacement,
Multiplication or division adjustment present frame or the power of next frame baseband signal.
In the method and apparatus for the LTE system uplink transmission power control that the present invention is provided, by the way that the first amplification is increased
Benefit is limited within the maximum variable quantity of power amplifier with the difference of the second gain amplifier, that is, is defined between front and rear subframe
Power difference, so that the amplitude of variation of power amplifier is smaller, in the interval of front and rear subframe（Usually CP）Just complete
Climbing or reducing for power, from without influenceing the transmission quality of front and rear sub-frame of uplink, improves the reliable of the up transmission of LTE system
Property.
Brief description of the drawings
Fig. 1 is LTE system uplink data sending processing schematic diagram；
Fig. 2 is the schematic flow sheet of the method for the LTE system uplink transmission power control of the embodiment of the present invention；
Fig. 3 is the mount structure schematic diagram of the device of the LTE system uplink transmission power control of the embodiment of the present invention.
Embodiment
The method that controls LTE system uplink transmission power proposed by the present invention below in conjunction with the drawings and specific embodiments and
Device is described in further detail.According to following explanation and claims, advantages and features of the invention will become apparent from.Need
Bright, accompanying drawing is using very simplified form and uses non-accurately ratio, only conveniently, lucidly to aid in illustrating
The purpose of the embodiment of the present invention.
Fig. 1 is refer to, it is that LTE system uplink data sending handles schematic diagram.For the up transmission of LTE system,
The disposition for sending data is generally：Data signal is obtained first；Then baseband signal is generated by the data signal, this
Place can be realized by modulation systems such as QPSK, QAM；Then baseband signal passes through D/A（D/A）Converter formation simulation letter
Number, analog signal passes through power amplifier（APC）Generate the analog signal of power amplification, i.e. generation and meet the simulation of target power
Signal（Hereinafter referred to as target simulation signal）.
If the signal intensity of baseband signal is big, then the analog signal certain for meeting target power（Target simulation
Signal）, the gain to be amplified of power amplifier will be small, the APC value that power amplifier is set（Coefficient of power amplifier, it is related to the gain that power amplifier to be amplified,
It is equal in the use of present specification with gain amplifier）More relatively small, the power consumption of such transmitting terminal can be less.But such as
Two frames before and after fruit（Front and rear two subframe in other words）Target power difference it is larger, and if baseband signal difference is little, then institute
The difference for having last power just can be all embodied on power amplifier（It is embodied on the gain amplifier of power amplifier）, now it is necessary to
Ask power amplifier quality very high（It is in other words preferable power amplifier）, otherwise just impacted to sending quality.
The core of the present invention is that, when the target power difference of up transmission is very big, needs power amplifier real in other words
When the existing variable quantity for climbing or reducing is very big, the change climbed or reduced of power amplifier needs is shared using baseband signal
Amount, and then influence of the power amplifier for up transmission in the change procedure of gain amplifier is avoided, to improve the up transmission of LTE system
Reliability.
Fig. 2 is refer to, the flow signal of its method controlled for the LTE system uplink transmission power of the embodiment of the present invention
Figure.As shown in Fig. 2 the method for the LTE system uplink transmission power control includes：
Step S20：Obtain the maximum variable quantity of certain time internal strength rate amplifier；
Step S21：Obtain the first gain amplifier, first gain amplifier be present frame when baseband signal power is maximum,
The gain amplifier of required power amplifier；
Step S22：Obtain the second gain amplifier, second gain amplifier be next frame when baseband signal power is maximum,
The gain amplifier of required power amplifier；
Step S23：Obtain the difference of the first gain amplifier and the second gain amplifier；
Step S24：If the difference is more than the power of maximum variable quantity, adjustment present frame or next frame baseband signal,
So that difference is less than or equal to maximum variable quantity.
Here, not limited for the sequencing between step S20, step S21 and step S22, that is to say, that can
To first carry out step S20, then perform step S21, step S22；Step S21 can also be first carried out, then performs step S22, step
S20；Step S20, step S21 and step S22 can also be performed simultaneously, it is, of course, also possible to using other execution sequences.
Accordingly, the present invention also provides a kind of device of LTE system uplink transmission power control.Fig. 3 is refer to, it is this
The mount structure schematic diagram of the device of the LTE system uplink transmission power control of inventive embodiments.As shown in figure 3, the LTE system
The device of uplink transmission power control includes：
Scope acquisition module 30, the maximum variable quantity to obtain certain time internal strength rate amplifier；
First gain acquisition module 31, to obtain the first gain amplifier, first gain amplifier is present frame in base band
When signal power is maximum, the gain amplifier of required power amplifier；
Second gain acquisition module 32, to obtain the second gain amplifier, second gain amplifier is next frame in base band
When signal power is maximum, the gain amplifier of required power amplifier；
Comparison module 33, the difference to obtain the first gain amplifier and the second gain amplifier；
Processing module 34, to when difference is more than maximum variable quantity, adjustment present frame or next frame baseband signal
Power so that difference is less than or equal to maximum variable quantity.
Specifically, the maximum variable quantity of certain time internal strength rate amplifier is obtained by scope acquisition module 30 first
ΔAPC_ADJ.The power amplifier is that baseband signal is become after analog signal by D/A converter, and the analog signal becomes
Into target simulation signal（Meet the analog signal of target power）The processing equipment of required process.
For the shorter CP types of length（Normal CP）For, the certain time is preferably the μ s of 3 μ s ~ 5.2, herein
In view of the protection interval having between subframe before and after LTE system（Protection interval is similar in other words）Most short only 160Ts,
That is 5.2 μ s, in order to realize climbing/reducing for power amplifier in the protection interval, it is to avoid for data to be sent
Influence, is excellent using the power amplifier to be slightly less than in protection interval.In the present embodiment, by taking such a situation as an example.
For the longer CP types of length（Extend CP）For, the certain time is preferably the μ s of 12 μ s ~ 16.67,
This considers the protection interval having before and after LTE system between subframe（Protection interval is similar in other words）For 16.67 μ s, it is
Climbing/reducing for power amplifier can be realized in the protection interval, it is to avoid for the influence of data to be sent, with slightly
The use of the power amplifier is excellent less than in protection interval.
Here, Multi simulation running experiment/inspection can be carried out to the power amplifier by emulator, to obtain a timing
The maximum variable quantity of the interior power amplifier（APC excursions in other words）.Specifically, one variable quantity of setting, is measured at this
Power amplifier stablizes the required time under variable quantity（Reach the stabilization time of the amount of climbing/reduction amount）；Then, change is changed
Amount, continues to measure power amplifier under the variable quantity after the change and stablizes the required time, perform repeatedly, finally draw repeatedly
The maximum variable quantity of the power amplifier in certain time.It is preferred that, the change of variable quantity is made according to certain rules, for example, often
Secondary variable quantity is increase 1dB；Or each variable quantity is to reduce 1dB etc..
It is preferred that, the certain time is 5 μ s, then just can show that power is put described in 5 μ s by Multi simulation running experiment
The maximum variation delta of big deviceAPC_ADJFor 10dB gain amplifiers, that is to say, that power amplifier can be previous described in 5 μ s
The 10dB amount of climbing/reduction amount is realized on the basis of gain amplifier.
Then, the first gain acquisition module 31 obtains the first gain amplifier PMAX_APC, first gain amplifier is to work as
Previous frame is when baseband signal power is maximum, the gain amplifier of required power amplifier.Wherein, the present frame refers to current need
One frame to be sent/subframe, one frame/sub-frame data that needs of nearest moment are sent in other words.Specifically, being to work as basic data
When power is in maximum, the gain amplifier performed required for target power, the power amplifier is reached.It is preferred that, according to such as
Lower situation calculates the first gain amplifier PMAX_APC：It is small according to the RB numbers under PUSCH maximum bandwidths, and current path loss
The PUSCH expectation received powers of area's configuration, when calculating baseband signal full scale under full scheduling, power amplifier may be used most
Big gain amplifier.
Meanwhile, the second gain acquisition module 32 obtains the second gain amplifier PNEXT_APC, under second gain amplifier is
One frame is when baseband signal power is maximum, the gain amplifier of required power amplifier.Wherein, and then the next frame refers to
One frame/sub-frame data after present frame.It is preferred that, the second gain amplifier PNEXT_APCIt can be counted according to following situation
Calculate：According to the RB numbers under PUSCH maximum bandwidths, and current path loss, the PUSCH expectation received powers of cell configuration are calculated
When going out baseband signal full scale under full scheduling, the maximum gain amplifier that power amplifier may be used.
Then, the first gain amplifier P is obtained using comparison module 33MAX_APCWith the second gain amplifier PNEXT_APCDifference.
Specifically, can be realized by equation below one：
ΔAPC=| PMAX_APC-PNEXT_APC| （Formula one）
Here, resulting difference DELTAAPCThe power of present frame or next frame baseband signal be not adjusted as
In the case of, power amplifier needs the variable quantity carried out, the i.e. amount of climbing of power amplifier gain amplifier/reduction amount.
Assuming that the first gain amplifier PMAX_APCFor 50dB, the second gain amplifier PNEXT_APCFor 35dB, then resulting difference
ΔAPCAs 15dB, and be that institute's power amplifier needs to reduce 15dB；Assuming that the first gain amplifier PMAX_APCFor 50dB, second
Gain amplifier PNEXT_APCFor 65dB, then resulting difference DELTAAPCAlso it is 15dB, but is that institute's power amplifier needs to climb
15dB。
Obtaining the first gain amplifier PMAX_APCWith the second gain amplifier PNEXT_APCDifference after, the processing module
34 can be handled.If specifically, the difference DELTAAPCMore than maximum variation deltaAPC_ADJ, then present frame or next is adjusted
The power of frame baseband signal so that difference DELTAAPCLess than or equal to maximum variation deltaAPC_ADJ。
If here, first explaining difference DELTAAPCAlready less than or equal to maximum change in the case of without processing
Measure ΔAPC_ADJDisposition, at this time it is also possible to handling process be brought into next step by the processing module 34, for example, entering
Enter the step of carrying out power amplification using power amplifier；Also it is directly entered follow-up step without the operation of processing module 34
Suddenly, the application is not limited this.
Here, in difference DELTAAPCMore than maximum variation deltaAPC_ADJIn the case of, needed to be climbed according to power amplifier
The different situations for rising or reducing, the processing module 34 carries out different disposal.
The first situation：
Work as difference DELTAAPCMore than maximum variation deltaAPC_ADJ, and the first gain amplifier PMAX_APCMore than the second gain amplifier
PNEXT_APCWhen（I.e. power amplifier needs reduction）, the power of the reduction of the processing module 34 next frame baseband signal.
Second of situation：
Work as difference DELTAAPCMore than maximum variation deltaAPC_ADJ, and the first gain amplifier PMAX_APCLess than the second gain amplifier
PNEXT_APCWhen（I.e. power amplifier needs to climb）, the power of the reduction of the processing module 34 present frame baseband signal.
First, the processing method of the processing module 34 is further illustrated for second of situation.According to foregoing two
It is individual to assume：Assuming that the maximum variation delta of power amplifierAPC_ADJFor 10dB gain amplifiers；And assume the first gain amplifier
PMAX_APCFor 50dB, the second gain amplifier PNEXT_APCFor 65dB, then resulting difference DELTAAPCFor 15dB, institute's power amplifier is needed
Climb 15dB.
Because the targeted situation of the application is, baseband signal power is maximum, and the amplification of used power amplifier increases
It is beneficial minimum, for such a situation, mainly it is accomplished by baseband signal power, the first gain amplifier of increase by reducing present frame
PMAX_APCIt is achieved.It is preferred that, to the first gain amplifier PMAX_APC5dB is heightened, that is, causes the first required gain amplifier
PMAX_APCFor 55dB.In this regard, can be achieved by a variety of methods, for example, present frame is adjusted by displacement, multiplication or division
Baseband signal, to reduce the power of present frame baseband signal.
In order to clearly illustrate to adjust baseband signal by displacement, multiplication or division, just it can change（Raise/lower）
The power of the baseband signal, is subsequently explained first.
The method for expressing of baseband signal is represented with I roads component+Q road components, shown in equation below two：
sl(t)=Re { sl(t)}×cos(2πf0t)-Im{sl(t)}×sin(2πf0t) （Formula two）
Wherein, Re { sl(t) what is } represented is exactly the amplitude on Q roads, Im { sl(t) what is } represented is exactly the amplitude on I roads.
Amplitude in correspondence branch represents that the size of signal intensity is indicated with amplitude square with binary digit,
It is generally acknowledged that signal intensity is calculated as follows shown in formula three：
RSSI=I2+Q2（Formula three）
If so amplitude changes, necessarily causing the change of signal intensity, for some baseband signal, if on year-on-year basis
The amplitude for changing I roads Q roads of example, then corresponding baseband signal is also just changed, if I roads Q roads amplitude increased
（If unsaturation）, then corresponding baseband signal becomes strong, whereas if I roads Q roads amplitude is reduced（Non- distortion）, then it is right
The baseband signal answered dies down；For the data of binary representation, one 2 times of signal intensity of expression of shifting function changes into dB with regard to phase
When in changes in amplitude 3dB（10log102=3）, corresponding changed power is then 6dB（10log1022=6）.
Therefore, for second of situation, the processing module 34 can be achieved by moving to right baseband signal, wherein, it is right
The digit of shifting is calculated according to equation below four and obtained：
（Formula four）
Specially pairRound up, according to foregoing hypothesis situation, the digit that can be shifted herein
1, i.e., the power of present frame baseband signal is reduced by moving to right one and realizing herein.
In order to meet target power, it is necessary to be carried out by power amplifier after the power reduction of present frame baseband signal
Power amplification.In the present embodiment, an amplification module 35 is also provided, for second of situation, the amplification module 35 passes through work(
Rate amplifier is according to the power and target power of the present frame baseband signal after reduction, to the present frame baseband signal after reduction
Power is amplified, that is to say, that the amplification module 35 carries out power to the above-mentioned baseband signal by moving to right a bit manipulation and put
Greatly, to reach target power.Now, the power of targeted baseband signal is：P′MAX_APC=PMAX_APC+Sbits×6。
Common, the baseband signal, which needs to first pass through D/A converter, becomes analog signal, the then power amplification
Device performs power amplification operation for becoming the data of analog signal again, obtains target simulation signal.Here, main explanation is described
Present frame baseband signal of the targeted process object of power amplifier after reduction, pilot process the application is not limited
It is fixed.
When the processing module 34 changes the power of baseband signal by shifting function, its implementation is simple, but together
When, it does not have the maximum variation delta of maximized utilization certain time internal strength rate amplifierAPC_ADJ.In other realities of the present invention
Apply in example, can also realize that the power of baseband signal changes by multiplication/division, this implementation method is relatively complicated, but its
It is capable of the maximum variation delta of maximized utilization certain time internal strength rate amplifierAPC_ADJ., can be according to not when implementing
With requiring, different selections are made.
Again by taking multiplication as an example, in order that obtaining signal intensity/power variation changes ΔAPC-ΔAPC_ADJ, it is assumed that changes in amplitude
For original x times, then it is required that 10log10x2=ΔAPC-ΔAPC_ADJ,
I.e.：Corresponding multiplication is exactly that all I roads Q railway digital baseband signal amplitudes will be multiplied by x.
For the first situation, in order to by the first gain amplifier PMAX_APCWith the second gain amplifier PNEXT_APCDifference DELTAAPC
It is limited to the maximum variation delta of power amplifierAPC_ADJIt is interior, because the targeted situation of the application is that baseband signal power is most
Greatly, the gain amplifier of used power amplifier is minimum, and for such a situation, the processing module 34 mainly is accomplished by passing through
Reduce baseband signal power, the second gain amplifier P of increase of next frameNEXT_APCIt is achieved.Here, will believe present frame base band
Number power is not changed.
For the first situation, in order to meet target power, still using amplification module 35 to present frame baseband signal work(
Rate is amplified, now, and power amplifier is according to the power and target power of present frame baseband signal, to present frame baseband signal
Power be amplified.It is, the baseband signal that now power amplifier is amplified is raw baseband signal.
In first situation, for the processing of next frame baseband signal, the next frame baseband signal can be worked as and become current
During frame baseband signal, similar processing is done further according to the method disclosed in the application, in this regard, the application is repeated no more.
To sum up, in the present embodiment, put by the way that the difference of the first gain amplifier and the second gain amplifier is limited into power
Within the maximum variable quantity of big device, that is, the power difference between front and rear subframe is defined, so that the change of power amplifier
Amplitude is smaller, in the interval of front and rear subframe（Usually CP）Just climbing or reducing for power is completed, before and after without influenceing
The transmission quality of sub-frame of uplink, improves the reliability of the up transmission of LTE system.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Scope.
Claims (16)
1. a kind of method of LTE system uplink transmission power control, it is characterised in that including：
Obtain the maximum variable quantity of certain time internal strength rate amplifier；
Obtain the first gain amplifier, first gain amplifier be present frame when baseband signal power is maximum, required power
The gain amplifier of amplifier；
Obtain the second gain amplifier, second gain amplifier be next frame when baseband signal power is maximum, required power
The gain amplifier of amplifier；
Obtain the difference of the first gain amplifier and the second gain amplifier；
If the difference is more than the power of maximum variable quantity, adjustment present frame or next frame baseband signal so that difference is less than
Or equal to maximum variable quantity.
2. the method for LTE system uplink transmission power control as claimed in claim 1, it is characterised in that the certain time
For the μ s of 3 μ s~5.2.
3. the method for LTE system uplink transmission power control as claimed in claim 1, it is characterised in that the certain time
For the μ s of 12 μ s~16.67.
4. the method for LTE system uplink transmission power control as claimed in claim 1, it is characterised in that if the difference is more than
Maximum variable quantity, and the first gain amplifier is more than the second gain amplifier, then reduces the power of next frame baseband signal.
5. the method for LTE system uplink transmission power control as claimed in claim 4, it is characterised in that also include：
Power amplifier is put according to the power and target power of present frame baseband signal to the power of present frame baseband signal
Greatly.
6. the method for LTE system uplink transmission power control as claimed in claim 1, it is characterised in that if the difference is more than
Maximum variable quantity, and the first gain amplifier is less than the second gain amplifier, then reduces the power of present frame baseband signal.
7. the method for LTE system uplink transmission power control as claimed in claim 6, it is characterised in that also include：
Power amplifier is according to the power and target power of the present frame baseband signal after reduction, to the present frame base band after reduction
The power of signal is amplified.
8. the method for the LTE system uplink transmission power control as described in any one of claim 1 to 7, it is characterised in that
Present frame or the power of next frame baseband signal are adjusted by displacement, multiplication or division.
9. a kind of device of LTE system uplink transmission power control, it is characterised in that including：
Scope acquisition module, the maximum variable quantity to obtain certain time internal strength rate amplifier；
First gain acquisition module, to obtain the first gain amplifier, first gain amplifier is present frame in baseband signal work(
When rate is maximum, the gain amplifier of required power amplifier；
Second gain acquisition module, to obtain the second gain amplifier, second gain amplifier is next frame in baseband signal work(
When rate is maximum, the gain amplifier of required power amplifier；
Comparison module, the difference to obtain the first gain amplifier and the second gain amplifier；
Processing module, to when difference is more than maximum variable quantity, the power of adjustment present frame or next frame baseband signal makes
Obtain difference and be less than or equal to maximum variable quantity.
10. the device of LTE system uplink transmission power control as claimed in claim 9, it is characterised in that the certain time
For the μ s of 3 μ s~5.2.
11. the device of LTE system uplink transmission power control as claimed in claim 9, it is characterised in that the certain time
For the μ s of 12 μ s~16.67.
12. the device of LTE system uplink transmission power control as claimed in claim 9, it is characterised in that when difference is more than most
Big variable quantity, and the first gain amplifier, when being more than the second gain amplifier, the processing module reduces the work(of next frame baseband signal
Rate.
13. the device of LTE system uplink transmission power control as claimed in claim 12, it is characterised in that also include：
Amplification module, by power and target power of the power amplifier according to present frame baseband signal, believes present frame base band
Number power be amplified.
14. the device of LTE system uplink transmission power control as claimed in claim 9, it is characterised in that when difference is more than most
Big variable quantity, and the first gain amplifier, when being less than the second gain amplifier, the processing module reduces the work(of present frame baseband signal
Rate.
15. the device of LTE system uplink transmission power control as claimed in claim 14, it is characterised in that also include：
Amplification module, by power and target power of the power amplifier according to the present frame baseband signal after reduction, to reducing
The power of present frame baseband signal afterwards is amplified.
16. the device of the LTE system uplink transmission power control as described in any one of claim 9 to 15, its feature exists
In the processing module adjusts present frame or the power of next frame baseband signal by displacement, multiplication or division.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210350300.3A CN103686971B (en) | 2012-09-19 | 2012-09-19 | The method and apparatus of LTE system uplink transmission power control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210350300.3A CN103686971B (en) | 2012-09-19 | 2012-09-19 | The method and apparatus of LTE system uplink transmission power control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103686971A CN103686971A (en) | 2014-03-26 |
| CN103686971B true CN103686971B (en) | 2017-09-29 |
Family
ID=50322927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210350300.3A Active CN103686971B (en) | 2012-09-19 | 2012-09-19 | The method and apparatus of LTE system uplink transmission power control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103686971B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101729104A (en) * | 2008-10-31 | 2010-06-09 | 中兴通讯股份有限公司 | Method and system for controlling uplink transmitting power as well as base station |
| WO2010104313A2 (en) * | 2009-03-09 | 2010-09-16 | 엘지전자 주식회사 | Method for controlling transmission power in a multi-antenna wireless communication system |
| CN101951674A (en) * | 2010-09-16 | 2011-01-19 | 新邮通信设备有限公司 | Method and device for calibrating downlink channel gain |
| CN101981984A (en) * | 2008-03-28 | 2011-02-23 | 高通股份有限公司 | Apparatus and method for adaptive power control |
-
2012
- 2012-09-19 CN CN201210350300.3A patent/CN103686971B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101981984A (en) * | 2008-03-28 | 2011-02-23 | 高通股份有限公司 | Apparatus and method for adaptive power control |
| CN101729104A (en) * | 2008-10-31 | 2010-06-09 | 中兴通讯股份有限公司 | Method and system for controlling uplink transmitting power as well as base station |
| WO2010104313A2 (en) * | 2009-03-09 | 2010-09-16 | 엘지전자 주식회사 | Method for controlling transmission power in a multi-antenna wireless communication system |
| CN101951674A (en) * | 2010-09-16 | 2011-01-19 | 新邮通信设备有限公司 | Method and device for calibrating downlink channel gain |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103686971A (en) | 2014-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5989006B2 (en) | Reverse transmission output determination method and apparatus in mobile communication system | |
| CN104105181B (en) | A kind of Poewr control method and equipment of D2D transmission | |
| US7324828B2 (en) | Transmission power control method and device | |
| CN107979869A (en) | The method and apparatus for the power headroom reporting that wave beam operates in wireless communication system | |
| CN104837110B (en) | Transmission strategy implementation method based on interruption performance lifting in honeycomb D2D communication systems | |
| EP2019491B1 (en) | Strain control device and method | |
| CN102076072A (en) | Uplink power control method, user equipment (UE) and carrier aggregation (CA) system | |
| CN1512802A (en) | Mobile terminal with power control and method | |
| CN102638894A (en) | Method and equipment for distributing PDSCH (physical downlink shared channel) power | |
| CN108029081A (en) | For sending the method and user equipment of uplink signal and PROSE signals | |
| US20050053036A1 (en) | Multi-carrier communication system, multi-carrier receiver apparatus and multi-carrier transmitter apparatus | |
| CN108064077A (en) | The power distribution method of full duplex D2D in cellular network | |
| CN102892186B (en) | Method and device for determining physical downlink control channel resource | |
| CN107223314A (en) | With the under powered full-duplex radio of adaptive reception | |
| US20030153344A1 (en) | Transmission power control method and system for CDMA communication system | |
| CN106027085A (en) | Automatic gain control method suitable for short-time burst signal of time division multi-access system | |
| CN102378245B (en) | Method and device for submitting power headroom report (PHR) | |
| KR101968704B1 (en) | Method and apparatus for determining transmitting power in the mimo communication system | |
| CN103686971B (en) | The method and apparatus of LTE system uplink transmission power control | |
| EP2360837B1 (en) | Process for performing cubic metric computation in the transmitter of a UE for a wireless communication system, and apparatus for performing the same | |
| US6298094B1 (en) | Method and apparatus for power control in a transmitter | |
| CN110087320A (en) | A kind of wireless resource allocation methods towards real-time control | |
| CN105307253B (en) | To the Poewr control method of high-power cluster terminal, system and device | |
| CN107613549A (en) | A kind of low-consumption wireless Cellular Networks data rate and transmitting power consumption adaptive approach | |
| CN104105189A (en) | Power control method of device to device (D2D) transmission, power control system of D2D transmission and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191106 Address after: 1-1-609-a, North Zone, financial and Trade Center, No. 6865, Asia Road, Tianjin Free Trade Zone (Dongjiang Free Trade Port Area), 300450 Patentee after: Huiyi finance leasing (Tianjin) Co., Ltd Address before: 201206 No. 1258 Mingyue Road, Shanghai, Pudong New Area Patentee before: Leadcore Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20140326 Assignee: Leadcore Technology Co., Ltd. Assignor: Huiyi finance leasing (Tianjin) Co., Ltd Contract record no.: X2020980000019 Denomination of invention: LTE system uplink transmission power control method and device Granted publication date: 20170929 License type: Exclusive License Record date: 20200106 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220317 Address after: 201206 Ming Yue Road, Pudong New Area, Shanghai, No. 1258 Patentee after: LEADCORE TECHNOLOGY Co.,Ltd. Address before: 300450 Tianjin pilot free trade zone (Dongjiang Bonded Port Area), 1-1-609-a, north area of financial and Trade Center, No. 6865, Asia Road Patentee before: Huiyi finance leasing (Tianjin) Co.,Ltd. |
|
| TR01 | Transfer of patent right |