CN103686971A - LTE system uplink transmission power control method and device - Google Patents
LTE system uplink transmission power control method and device Download PDFInfo
- Publication number
- CN103686971A CN103686971A CN201210350300.3A CN201210350300A CN103686971A CN 103686971 A CN103686971 A CN 103686971A CN 201210350300 A CN201210350300 A CN 201210350300A CN 103686971 A CN103686971 A CN 103686971A
- 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.)
- Granted
Links
Images
Classifications
-
- Y02B60/50—
Landscapes
- Transmitters (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides an LTE system uplink transmission power control method and device. The difference value between first amplification gain and second amplification gain is limited within the maximum variation of a power amplifier. The power difference between front and rear sub frames is limited, thus the variation amplitude of the power amplifier is small. Power climbing or reducing is completed in the interval between front and rear sub frames (usually CP). The transmission quality of front and rear uplink sub frames is not affected, and the reliability of the uplink transmission of an LTE system is improved.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of method and apparatus of LTE system uplink transmission power control.
Background technology
At LTE(Long Term Evolution, Long Term Evolution) in system, the power of up transmission is because the difference of channel target power, and the difference of front and back subframe uplink scheduling resource, and 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 taking, PUCCH fixes a RB(Resource Block, Resource Block, shared spectral bandwidth is 180KHz), PUSCH is that conference is 18MHz to the shared spectral bandwidth of 100RB(according to the number of scheduling of resource); In addition, aspect the expectation received power of base station side, because the modulation system of PUCCH adopts at most is QPSK, PUSCH can adopt 16QAM and rear extended meeting to use 64QAM, thus expectation received power aspect one general configuration be PUSCH can be higher than PUCCH.In view of above 2 points, the difference of the transmitted power of PUSCH and PUCCH tends to very large.
In prior art, the implementation of uplink transmission power is: baseband signal/base band data power reaches maximum (being baseband signal full scale) as much as possible, to reduce power amplifier, (be called for short power amplifier, also claim automatic power controller, APC) gain amplifier, thereby the less object of power consumption when reaching up transmission.But prior art is the simple efficiency of considering power amplifier just, do not have to consider because the difference of transmitted power causes front and back subframe power amplifier gain amplifier to change excessive between subframe, and radio-frequency devices is because the cause of cost, it is not desirable device, before and after power amplifier, gain amplifier difference is larger, needs stabilization time just longer.And there is difference in LTE system itself and 2/3G system before; be before and after LTE system, between subframe, to reserve GP(Guard Space; protection interval) subframe is protected; although have CP(Cyclic Prefix between subframe before and after LTE system; Cyclic Prefix) protection; but CP itself is valid data; and the length of CP also the GP in the system before is short (the shortlyest only has 160Ts; i.e. 5.2 μ s); and LTE system is because of adaptive-bandwidth, thereby the power difference of introducing can be more large.
As can be seen here; in the implementation method of existing LTE system uplink transmission power control; there is following problem: when up continuous transmission; there is no enough protection intervals be front and back subframe power climb or reduce protected; thus by cause send continuously and front and back subframe power difference larger in, power amplifier is unstable causes negative effect to sending quality.
Summary of the invention
The object of the present invention is to provide a kind of method and apparatus of LTE system uplink transmission power control; to solve in prior art when the up continuous transmission; there is no enough protection intervals be front and back subframe power climb or reduce protected; thus by cause send continuously and front and back subframe power difference larger in, the unstable problem that causes negative effect to sending quality of power amplifier.
For solving the problems of the technologies described above, the invention provides a kind of method of LTE system uplink transmission power control, comprising:
Obtain the maximum variable quantity of certain hour internal power amplifier;
Obtain the first gain amplifier, this first gain amplifier is present frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
Obtain the second gain amplifier, this second gain amplifier is next frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
Obtain the difference of the first gain amplifier and the second gain amplifier;
If this difference is greater than maximum variable quantity, adjust the power of present frame or next frame baseband signal, make difference be less than or equal to maximum variable quantity.
Optionally, in the method for described LTE system uplink transmission power control, described certain hour is 3 μ s ~ 5.2 μ s.
Optionally, in the method for described LTE system uplink transmission power control, described certain hour is 12 μ s ~ 16.67 μ s.
Optionally, in the method for described LTE system uplink transmission power control, if this difference is greater than maximum variable quantity, and the first gain amplifier is greater than the second gain amplifier, reduces the power of next frame baseband signal.
Optionally, in the method for described LTE system uplink transmission power control, also comprise:
Power amplifier, according to the power of present frame baseband signal and target power, amplifies the power of present frame baseband signal.
Optionally, in the method for described LTE system uplink transmission power control, if this difference is greater than maximum variable quantity, and the first gain amplifier is less than the second gain amplifier, reduces the power of present frame baseband signal.
Optionally, in the method for described LTE system uplink transmission power control, also comprise:
Power amplifier, according to power and the target power of the present frame baseband signal after reducing, amplifies the power of the present frame baseband signal after reducing.
Optionally, in the method for described LTE system uplink transmission power control, by displacement, multiplication or division, adjust the power of present frame or next frame baseband signal.
The present invention also provides a kind of device of LTE system uplink transmission power control, comprising:
Scope acquisition module, in order to obtain the maximum variable quantity of certain hour internal power amplifier;
The first gain acquisition module, in order to obtain the first gain amplifier, this first gain amplifier is present frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
The second gain acquisition module, in order to obtain the second gain amplifier, this second gain amplifier is next frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
Comparison module, in order to obtain the difference of the first gain amplifier and the second gain amplifier;
Processing module, in order to when difference is greater than maximum variable quantity, adjusts the power of present frame or next frame baseband signal, makes difference be less than or equal to maximum variable quantity.
Optionally, in the device of described LTE system uplink transmission power control, described certain hour is 3 μ s ~ 5.2 μ s.
Optionally, in the device of described LTE system uplink transmission power control, described certain hour is 12 μ s ~ 16.67 μ s.
Optionally, in the device of described LTE system uplink transmission power control, when difference is greater than maximum variable quantity, and the first gain amplifier is while being greater than the second gain amplifier, and described processing module reduces the power of next frame baseband signal.
Optionally, in the device of described LTE system uplink transmission power control, also comprise:
Amplification module,, amplifies the power of present frame baseband signal according to the power of present frame baseband signal and target power by power amplifier.
Optionally, in the device of described LTE system uplink transmission power control, when difference is greater than maximum variable quantity, and the first gain amplifier is while being less than the second gain amplifier, and described processing module reduces the power of present frame baseband signal.
Optionally, in the device of described LTE system uplink transmission power control, also comprise:
Amplification module,, amplifies the power of the present frame baseband signal after reducing according to power and the target power of the present frame baseband signal after reducing by power amplifier.
Optionally, in the device of described LTE system uplink transmission power control, described processing module is adjusted the power of present frame or next frame baseband signal by displacement, multiplication or division.
In the method and apparatus of LTE system uplink transmission power control provided by the invention, within the difference of the first gain amplifier and the second gain amplifier is limited to the maximum variable quantity of power amplifier, the power difference before and after defining between subframe, make thus the amplitude of variation of power amplifier less, in the interval of front and back subframe, (be generally CP) and just complete climbing or reducing of power, thereby the transmission quality of sub-frame of uplink before and after not affecting, improves the reliability that LTE system uplink sends.
Accompanying drawing explanation
Fig. 1 is that LTE system uplink sends data processing schematic diagram;
Fig. 2 is the schematic flow sheet of method of the LTE system uplink transmission power control of the embodiment of the present invention;
Fig. 3 is the mount structure schematic diagram of device of the LTE system uplink transmission power control of the embodiment of the present invention.
Embodiment
The method and apparatus of LTE system uplink transmission power control the present invention being proposed below in conjunction with the drawings and specific embodiments is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the object of the aid illustration embodiment of the present invention lucidly.
Please refer to Fig. 1, it is LTE system uplink transmission data processing schematic diagram.For LTE system uplink sends, the disposition that sends data is generally: first obtain digital signal; Then by described digital signal, generate baseband signal, can realize by modulation systems such as QPSK, QAM herein; Then baseband signal forms analog signal by D/A (D/A) transducer, and the analog signal that analog passband signal overpower amplifier (APC) generating power amplifies generates the analog signal (hereinafter to be referred as target simulation signal) that meets target power.
If the signal strength signal intensity of baseband signal is large, so for meeting the certain analog signal of target power (target simulation signal), the gain that power amplifier will amplify will be little, APC value (the power amplifier coefficient that power amplifier arranges, the gain that will amplify to power amplifier is relevant, in the use of present specification, be equal to gain amplifier) just relative smaller, the power consumption of transmitting terminal can be less like this.If but the target power difference of front and back two frames (two subframes in other words) is larger, and the little words of baseband signal difference, the difference of so all last power just all can be embodied on power amplifier and (be embodied on the gain amplifier of power amplifier), now, just require power amplifier quality very high (being desirable power amplifier in other words), otherwise just to sending quality, impact.
Core of the present invention is just, when the target power difference of up transmission is very large, when the variable quantity that climbs or reduce that needs in other words power amplifier to realize is very large, utilize baseband signal to share the variable quantity that climbs or reduce that power amplifier needs, and then avoid power amplifier impact for up transmission in the change procedure of gain amplifier, to improve the reliability of LTE system uplink transmission.
Please refer to Fig. 2, the schematic flow sheet of the method for the LTE system uplink transmission power control that it is the embodiment of the present invention.As shown in Figure 2, the method for described LTE system uplink transmission power control comprises:
Step S20: the maximum variable quantity that obtains certain hour internal power amplifier;
Step S21: obtain the first gain amplifier, this first gain amplifier is present frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
Step S22: obtain the second gain amplifier, this second gain amplifier is next frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
Step S23: the difference of obtaining the first gain amplifier and the second gain amplifier;
Step S24: if this difference is greater than maximum variable quantity, adjust the power of present frame or next frame baseband signal, make difference be less than or equal to maximum variable quantity.
At this, for the sequencing between step S20, step S21 and step S22, do not limit, that is to say and can first perform step S20, then perform step S21, step S22; Also S21 be can first perform step, then S22, step S20 performed step; S20, step S21 and step S22 can also be performed step simultaneously, certainly, other execution sequence can also be adopted.
Accordingly, the present invention also provides a kind of device of LTE system uplink transmission power control.Please refer to Fig. 3, the mount structure schematic diagram of the device of the LTE system uplink transmission power control that it is the embodiment of the present invention.As shown in Figure 3, the device of described LTE system uplink transmission power control comprises:
The first gain acquisition module 31, in order to obtain the first gain amplifier, this first gain amplifier is present frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
The second gain acquisition module 32, in order to obtain the second gain amplifier, this second gain amplifier is next frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
Concrete, first by scope acquisition module 30, obtain the maximum variation delta of certain hour internal power amplifier
aPC_ADJ.Described power amplifier is baseband signal and becomes after analog signal by D/A converter, and this analog signal becomes the treatment facility of the required process of target simulation signal (meeting the analog signal of target power).
For the shorter CP type of length (Normal CP); described certain hour is preferably 3 μ s ~ 5.2 μ s; at this, consider the shortest 160Ts of only having in protection interval (being similar in other words protection interval) having between subframe before and after LTE system; i.e. 5.2 μ s; in order to realize climbing/reducing of power amplifier in this protects interval; avoid the impact for data to be sent, with in being slightly less than protection interval, it is excellent using this power amplifier.In the present embodiment, take this kind of situation as example.
For the longer CP type of length (Extend CP); described certain hour is preferably 12 μ s ~ 16.67 μ s; at this, consider that the protection interval (being similar in other words protection interval) having between subframe before and after LTE system is 16.67 μ s; in order to realize climbing/reducing of power amplifier in this protects interval; avoid the impact for data to be sent; with in being slightly less than protection interval, it is excellent using this power amplifier.
At this, can to described power amplifier, carry out Multi simulation running experiment/check by emulator, to obtain the maximum variable quantity (APC excursion in other words) of this power amplifier in certain hour.Concrete, set a variable quantity, measure power amplifier under this variable quantity and stablize the required time (stabilization time that reaches the amount of climbing/reducing amount); Then, change variable quantity, continue to measure power amplifier under the variable quantity after this change and stablize the required time, repeatedly carry out repeatedly, finally draw the maximum variable quantity of this power amplifier within a certain period of time.Preferably, the change of variable quantity is made according to certain rules, and for example, each variable quantity is and increases 1dB; Or each variable quantity is and reduces 1dB etc.
Preferably, described certain hour is 5 μ s, and through Multi simulation running, experiment just can draw, in the maximum variation delta of power amplifier described in 5 μ s
aPC_ADJfor 10dB gain amplifier, that is to say the amount of the climbing/reducing amount that realizes 10dB on power amplifier described in 5 μ s can the basis at last gain amplifier.
Then, described the first gain acquisition module 31 obtains the first gain amplifier P
mAX_APC, this first gain amplifier is present frame when baseband signal power is maximum, the gain amplifier of needed power amplifier.Wherein, described present frame refers to one frame/subframe that current needs send, and constantly needs recently in other words the one frame/sub-frame data sending.Concrete, be when basic data power is during in maximum, reach target power, the gain amplifier of the required execution of described power amplifier.Preferably, according to following situation, calculate described the first gain amplifier P
mAX_APC: according to the RB number under PUSCH maximum bandwidth, and current path loss, the PUSCH expectation received power of cell configuration, when calculating under full scheduling baseband signal full scale, the maximum gain amplifier that power amplifier is used possibly.
Meanwhile, described the second gain acquisition module 32 obtains the second gain amplifier P
nEXT_APC, this second gain amplifier is next frame when baseband signal power is maximum, the gain amplifier of needed power amplifier.Wherein, described next frame refers to and then present frame one frame/sub-frame data afterwards.Preferably, described the second gain amplifier P
nEXT_APCcan be calculated according to following situation: according to the RB number under PUSCH maximum bandwidth, and current path loss, the PUSCH expectation received power of cell configuration, when calculating under full scheduling baseband signal full scale, the maximum gain amplifier that power amplifier is used possibly.
Then, utilize comparison module 33 to obtain the first gain amplifier P
mAX_APCwith the second gain amplifier P
nEXT_APCdifference.Concrete, can realize by following formula one:
Δ
aPC=| P
mAX_APC-P
nEXT_APC| (formula one)
At this, resulting difference DELTA
aPCbe in the situation that the power of present frame or next frame baseband signal is not adjusted the variable quantity that power amplifier need to carry out, the i.e. amount of the climbing/reducing amount of power amplifier gain amplifier.
Suppose the first gain amplifier P
mAX_APCfor 50dB, the second gain amplifier P
nEXT_APCfor 35dB, resulting difference DELTA
aPCbe 15dB, and be that institute's power amplifier need to reduce 15dB; Suppose the first gain amplifier P
mAX_APCfor 50dB, the second gain amplifier P
nEXT_APCfor 65dB, resulting difference DELTA
aPCalso be 15dB, but be institute's power amplifier 15dB that need to climb.
Obtaining the first gain amplifier P
mAX_APCwith the second gain amplifier P
nEXT_APCdifference after, described processing module 34 can be processed.Concrete, if this difference DELTA
aPCbe greater than maximum variation delta
aPC_ADJ, adjust the power of present frame or next frame baseband signal, make difference DELTA
aPCbe less than or equal to maximum variation delta
aPC_ADJ.
At this, if difference DELTA once is first described
aPCwithout processing in the situation that, be less than or equal to maximum variation delta
aPC_ADJdisposition, now, also can bring handling process into next step by described processing module 34, for example, enter and utilize power amplifier to carry out the step of power amplification; Without the operation of processing module 34 and directly enter subsequent step, the application does not limit this yet.
At this, in difference DELTA
aPCbe greater than maximum variation delta
aPC_ADJsituation under, the different situations that need to climb or reduce according to power amplifier, described processing module 34 is carried out different disposal.
The first situation:
Work as difference DELTA
aPCbe greater than maximum variation delta
aPC_ADJ, and the first gain amplifier P
mAX_APCbe greater than the second gain amplifier P
nEXT_APCtime (power amplifier need reduce), described processing module 34 reduces the power of next frame baseband signal.
The second situation:
Work as difference DELTA
aPCbe greater than maximum variation delta
aPC_ADJ, and the first gain amplifier P
mAX_APCbe less than the second gain amplifier P
nEXT_APCtime (power amplifier need to climb), described processing module 34 reduces the power of present frame baseband signal.
First, for the second situation, further illustrate the processing method of described processing module 34.If adopt aforesaid two hypothesis: the maximum variation delta of supposing power amplifier
aPC_ADJfor 10dB gain amplifier; And hypothesis the first gain amplifier P
mAX_APCfor 50dB, the second gain amplifier P
nEXT_APCfor 65dB, resulting difference DELTA
aPCfor 15dB, institute's power amplifier 15dB that need to climb.
Due to the application for situation be, baseband signal power is maximum, the gain amplifier of the power amplifier using is minimum, for this kind of situation, mainly just needs baseband signal power by reducing present frame, increases the first gain amplifier P
mAX_APCbe achieved.Preferably, to the first gain amplifier P
mAX_APCheighten 5dB, make needed the first gain amplifier P
mAX_APCfor 55dB.To this, can be achieved by several different methods, for example by displacement, multiplication or division, adjust present frame baseband signal, to reduce the power of present frame baseband signal.
For explanation clearly, by displacement, multiplication or division, adjust baseband signal, just can change the power of (raising/reduction) this baseband signal, subsequently first this is explained.
The method for expressing of baseband signal represents with component+Q road, I road component, shown in following formula two:
S
l(t)=Re{s
l(t) } * cos (2 π f
0t)-Im{s
l(t) } * sin (2 π f
0t) (formula two)
Wherein, Re{s
l(t) what } represent is exactly the amplitude on Q road, Im{s
l(t) what } represent is exactly the amplitude on I road.
Corresponding amplitude on along separate routes represents with binary digit, and the size of signal strength signal intensity is to represent by amplitude square, it is generally acknowledged being calculated as follows shown in formula three of signal strength signal intensity:
RSSI=I
2+ Q
2(formula three)
So if amplitude changes, must cause the variation of signal strength signal intensity, for some baseband signals, if change in proportion the amplitude on Q road, I road, also just there is variation in so corresponding baseband signal, if Q road, I road amplitude is strengthened to (unsaturated words), so corresponding baseband signal grow, otherwise if Q road, I road amplitude is reduced to (not distortion), so corresponding baseband signal dies down; For the data of binary representation, 2 times of shifting function one bit representation signal intensities, change into dB and are just equivalent to changes in amplitude 3dB(10log
102=3), corresponding power variation is 6dB(10log
102
2=6).
Therefore, for the second situation, described processing module 34 can be achieved by the baseband signal that moves to right, and wherein, the figure place moving to right calculates according to following formula four:
It is right to be specially
round up, according to aforesaid supposed situation, 1 of the figure place that can obtain displacement at this, is reduced the power of present frame baseband signal by the realization that moves to right at this.
In order to meet target power, after the power reduction of present frame baseband signal, need to carry out power amplification by power amplifier.In the present embodiment, one amplification module 35 is also provided, for the second situation, power and the target power of the present frame baseband signal after described amplification module 35 reduces by power amplifier basis, power to the present frame baseband signal after reducing amplifies, that is to say that the move to right baseband signal of a bit manipulation of 35 pairs of above-mentioned processes of described amplification module carries out power amplification, to reach target power.Now, for the power of baseband signal be: P '
mAX_APC=P
mAX_APC+ S
bits* 6.
Common, described baseband signal needs first by D/A converter, to become analog signal, and then described power amplifier is carried out power amplification operation for the data that become analog signal again, obtains target simulation signal.At this, mainly illustrate described power amplifier for processing object from the present frame baseband signal after reducing, pilot process is the application do not limit.
When described processing module 34 changes the power of baseband signal by shifting function, its implementation is simple, but simultaneously, it does not have the maximized maximum variation delta of utilizing certain hour internal power amplifier
aPC_ADJ.In other embodiments of the invention, the power that also can realize baseband signal by multiplication/division changes, and this implementation method is comparatively complicated, but it can maximizedly utilize the maximum variation delta of certain hour internal power amplifier
aPC_ADJ.When specific implementation, can, according to different requirements, make different selections.
Take multiplication as example, in order to make signal strength signal intensity/power variation change Δ again
aPC-Δ
aPC_ADJ, suppose that changes in amplitude is original x times, requires 10log so
10x
2=Δ
aPC-Δ
aPC_ADJ,
That is:
corresponding multiplication is exactly that all I road Q railway digital baseband signal amplitudes will be multiplied by x.
For the first situation, for by the first gain amplifier P
mAX_APCwith the second gain amplifier P
nEXT_APCdifference DELTA
aPCbe limited to the maximum variation delta of power amplifier
aPC_ADJin, due to the application for situation be, baseband signal power is maximum, the gain amplifier of the power amplifier using is minimum, for this kind of situation, described processing module 34 mainly just needs baseband signal power, increase the second gain amplifier P by reducing next frame
nEXT_APCbe achieved.At this, will present frame baseband signal power not done to change.
For this first situation, in order to meet target power, still utilize 35 pairs of present frame baseband signal power of amplification module to amplify, now, power amplifier, according to the power of present frame baseband signal and target power, amplifies the power of present frame baseband signal.Namely, the baseband signal that now power amplifier amplifies is raw baseband signal.
In this first situation, for the processing of next frame baseband signal, in the time of can working as this next frame baseband signal and become present frame baseband signal, then do similar processing according to the application's disclosed method, to this, the application repeats no more.
To sum up, in the present embodiment, within the difference of the first gain amplifier and the second gain amplifier is limited to the maximum variable quantity of power amplifier, the power difference before and after defining between subframe, make thus the amplitude of variation of power amplifier less, in the interval of front and back subframe, (be generally CP) and just complete climbing or reducing of power, thereby the transmission quality of sub-frame of uplink before and after not affecting improves the reliability that LTE system uplink sends.
Foregoing description is only the description to preferred embodiment of the present invention, the not any restriction to the scope of the invention, and any change, modification that the those of ordinary skill in field of the present invention is done according to above-mentioned disclosure, all belong to the protection range of claims.
Claims (16)
1. a method for LTE system uplink transmission power control, is characterized in that, comprising:
Obtain the maximum variable quantity of certain hour internal power amplifier;
Obtain the first gain amplifier, this first gain amplifier is present frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
Obtain the second gain amplifier, this second gain amplifier is next frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
Obtain the difference of the first gain amplifier and the second gain amplifier;
If this difference is greater than maximum variable quantity, adjust the power of present frame or next frame baseband signal, make difference be less than or equal to maximum variable quantity.
2. the method for LTE system uplink transmission power control as claimed in claim 1, is characterized in that, described certain hour is 3 μ s ~ 5.2 μ s.
3. the method for LTE system uplink transmission power control as claimed in claim 1, is characterized in that, described certain hour is 12 μ s ~ 16.67 μ s.
4. the method for LTE system uplink transmission power control as claimed in claim 1, is characterized in that, if this difference is greater than maximum variable quantity, and the first gain amplifier is greater than the second gain amplifier, reduces the power of next frame baseband signal.
5. the method for LTE system uplink transmission power control as claimed in claim 4, is characterized in that, also comprises:
Power amplifier, according to the power of present frame baseband signal and target power, amplifies the power of present frame baseband signal.
6. the method for LTE system uplink transmission power control as claimed in claim 1, is characterized in that, if this difference is greater than maximum variable quantity, and the first gain amplifier is less than the second gain amplifier, reduces the power of present frame baseband signal.
7. the method for LTE system uplink transmission power control as claimed in claim 6, is characterized in that, also comprises:
Power amplifier, according to power and the target power of the present frame baseband signal after reducing, amplifies the power of the present frame baseband signal after reducing.
8. the method for the LTE system uplink transmission power control as described in any one in claim 1 to 7, is characterized in that, adjusts the power of present frame or next frame baseband signal by displacement, multiplication or division.
9. a device for LTE system uplink transmission power control, is characterized in that, comprising:
Scope acquisition module, in order to obtain the maximum variable quantity of certain hour internal power amplifier;
The first gain acquisition module, in order to obtain the first gain amplifier, this first gain amplifier is present frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
The second gain acquisition module, in order to obtain the second gain amplifier, this second gain amplifier is next frame when baseband signal power is maximum, the gain amplifier of needed power amplifier;
Comparison module, in order to obtain the difference of the first gain amplifier and the second gain amplifier;
Processing module, in order to when difference is greater than maximum variable quantity, adjusts the power of present frame or next frame baseband signal, makes difference be less than or equal to maximum variable quantity.
10. the device of LTE system uplink transmission power control as claimed in claim 9, is characterized in that, described certain hour is 3 μ s ~ 5.2 μ s.
The device of 11. LTE system uplink transmission power control as claimed in claim 9, is characterized in that, described certain hour is 12 μ s ~ 16.67 μ s.
The device of 12. LTE system uplink transmission power control as claimed in claim 8, is characterized in that, when difference is greater than maximum variable quantity, and the first gain amplifier is while being greater than the second gain amplifier, and described processing module reduces the power of next frame baseband signal.
The device of 13. LTE system uplink transmission power control as claimed in claim 12, is characterized in that, also comprises:
Amplification module,, amplifies the power of present frame baseband signal according to the power of present frame baseband signal and target power by power amplifier.
The device of 14. LTE system uplink transmission power control as claimed in claim 8, is characterized in that, when difference is greater than maximum variable quantity, and the first gain amplifier is while being less than the second gain amplifier, and described processing module reduces the power of present frame baseband signal.
The device of 15. LTE system uplink transmission power control as claimed in claim 14, is characterized in that, also comprises:
Amplification module,, amplifies the power of the present frame baseband signal after reducing according to power and the target power of the present frame baseband signal after reducing by power amplifier.
The device of 16. LTE system uplink transmission power control as described in any one in claim 9 to 15, is characterized in that, described processing module is adjusted the power of present frame or 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 true CN103686971A (en) | 2014-03-26 |
| CN103686971B 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) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8467464B2 (en) * | 2008-03-28 | 2013-06-18 | Qualcomm Incorporated | Apparatus, methods, and articles of manufacture for adaptive power control |
| CN101729104B (en) * | 2008-10-31 | 2013-03-27 | 中兴通讯股份有限公司 | Method and system for controlling uplink transmitting power as well as base station |
| KR101595031B1 (en) * | 2009-03-09 | 2016-02-26 | 엘지전자 주식회사 | Method for controlling transmission power in a wireless communication system supporting multiple antennas |
| CN101951674B (en) * | 2010-09-16 | 2013-03-27 | 新邮通信设备有限公司 | Method and device for calibrating downlink channel gain |
-
2012
- 2012-09-19 CN CN201210350300.3A patent/CN103686971B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103686971B (en) | 2017-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101548477B (en) | Power adjusting system and method of a remote radio frequency unit and a remote radio frequency unit | |
| CN104081838B (en) | Radio communication terminal device and transmitted power control method | |
| EP2503830B1 (en) | Method and apparatus for controlling uplink power in a wireless access system | |
| CN102549945B (en) | Method for power headroom reporting | |
| EP4231732A3 (en) | Apparatus and method for idle mode uplink transmission in wireless communication system | |
| CN104105181B (en) | A kind of Poewr control method and equipment of D2D transmission | |
| CN108811060B (en) | Power control method and device | |
| KR20110036489A (en) | Lte-advanced system and method for controlling uplink power | |
| CN101702823A (en) | Method for sending emissive power control command and base station | |
| WO2012020990A3 (en) | Method and apparatus for controlling transmission power in wireless communication system | |
| RU2011137124A (en) | DEVICE AND METHOD FOR CONTROLLING POWER OF THE RISING COMMUNICATION LINE FOR A WIRELESS TRANSMITTER USING MULTIPLE CARRIERS | |
| WO2011056001A3 (en) | Terminal device for transmitting a power headroom report in a multi-carrier communication system, and method for same | |
| CN108029081A (en) | For sending the method and user equipment of uplink signal and PROSE signals | |
| RU2012101426A (en) | CHANNEL TRANSMISSION POWER CONTROL IN DIFFERENT FREQUENCY REGIONS | |
| JP4860001B2 (en) | Wireless communication system, base station apparatus, mobile station apparatus, and communication method | |
| CN108064077A (en) | The power distribution method of full duplex D2D in cellular network | |
| MX2021015285A (en) | Terminal and wireless communication method. | |
| CN107223314A (en) | With the under powered full-duplex radio of adaptive reception | |
| CN102340850A (en) | Power control method and equipment | |
| CN102625435A (en) | Automatic gain control (AGC) device for global system for mobile communication (GSM) digital optical fiber frequency-selecting repeater and quick adaptive time slot method for AGC device | |
| CN103686971A (en) | LTE system uplink transmission power control method and device | |
| CN107070451B (en) | Equipment ADC precision configuration method in large-scale MIMO system | |
| 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 | |
| CN106941714A (en) | Poewr control method, device and base station | |
| JP2011077996A (en) | Transmitting apparatus, receiving device, communication system and transmitting method |
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 | ||
| 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. |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| 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 |
|
| TR01 | Transfer of patent right | ||
| 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. |