CN102149179A - Method and device for controlling power - Google Patents
Method and device for controlling power Download PDFInfo
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- CN102149179A CN102149179A CN2010101122760A CN201010112276A CN102149179A CN 102149179 A CN102149179 A CN 102149179A CN 2010101122760 A CN2010101122760 A CN 2010101122760A CN 201010112276 A CN201010112276 A CN 201010112276A CN 102149179 A CN102149179 A CN 102149179A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
Abstract
The embodiment of the invention discloses a method and device for controlling a power, which belong to the technical field of communication. The method comprises the steps of obtaining initial transmission powers of multiple channels corresponding to a power amplifier; reducing the transmission power of at least one channel with the lowest priority in the multiple channels while the sum of the initial transmission powers of the multiple channels exceeds a maximum transmission power of the power amplifier; and closing the channel if the differences between the transmission powers of one channel having the transmission power reduced and the other channels in the multiple channels are more than a preset threshold A or if the differences of transmission power spectral densities of the channel having the transmission power reduced and the other channels in the multiple channels are more than a preset threshold B. By using the technical scheme, the performance loss caused by nonlinearity of the power amplifier can be reduced and the data transmission performance can be improved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of Poewr control method and equipment.
Background technology
In communication system, for the quality that improves communication system also reduces user's interference on every side, to carry out power control to transmitting, the nearer communication of communication distance can be adopted relatively low transmitting power, communication distance communication far away can be adopted higher relatively transmitting power, but transmitting power can not surpass certain predefined maximum transmission power.Send if go up the data of a plurality of links of carrying at a PA (Power Amplifier, power amplifier), then total transmitting power of each link can not surpass predefined maximum transmission power.With 3GPP (third generation affiliate) LTE (Long Term Evolution, Long Term Evolution) is example, UE (User Equipment, subscriber equipment) transmitting power of i subframe transmission PUSCH (PhysicalUplink Shared Channel, Physical Uplink Shared Channel) adopts following formula to calculate:
P
PUSCH(i)＝min{P
CMAX，10log
10(M
PUSCH(i))+P
O_PUSCH(j)+α(j)·PL+Δ
TF(i)+f(i)}；
The transmitting power of i the subframe transmission PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) of UE adopts following formula to calculate:
P
PUCCH(i)＝min{P
CMAX，P
0_PUCCH+PL+h(n
CQI，n
HARQ)+Δ
F_PUCCH(F)+g(i)}；
P
CMAXMaximum transmission power for UE; M
PUSCH(i) for distributing to PRB (the Physical Resource Block Physical Resource Block) number that PUSCH is used to transmit; P
0_PUSCH(j), P
0_PUCCHBe the power reference value of a semi-static setting, can set different values at different uplink transmission data bags; α (j) expression is indicated by high-level signaling the compensation rate of path loss; PL is the downlink path loss that terminal calculates; Δ
F_PUCCH(F), the power back-off of the different PUCCH forms of h () expression; Δ
TF(i) be one and code rate and the corresponding side-play amount of modulation system, whether expression carries out power back-off to different modulation systems and code check; F (i), g (i) are the power adjustment that obtains by the base station power control command.This shows that when the power that calculates according to power control command as PUCCH or PUSCH surpasses the maximum transmission power of equipment, its actual employing emitted power will be the maximum transmission power of equipment.The channel emission power that equipment calculates according to power control command is called the calculating transmitting power.
In LTE, a power amplifier has only a channel sending simultaneously, or PUCCH, or PUSCH, as long as the calculating transmitting power of PUCCH or PUSCH is no more than the maximum transmission power of UE, then adopt the transmitting power of PUCCH or PUSCH to realize transfer of data.But in LTE-A (LTE-Advance, the evolution of LTE), a power amplifier may support the data of a plurality of channels to send.For example, the transmission of two discontinuous PUSCH of same wave band, different carrier was perhaps supported in transmission when a power amplifier may be supported PUCCH and PUSCH.In this case, total calculating transmitting power of all channels of a PA correspondence and the maximum transmission power that can not surpass this PA.In actual applications, because each channel independently carries out the power control of oneself, the summation of the calculating transmitting power of all channels surpasses the maximum transmission power of PA possibly, therefore will reduce one or more channel transmitting power so that a plurality of channel transmitting power and the maximum transmission power that is no more than PA.
May cause that transmitting power differs bigger between different channels and reduce by one and a plurality of channel power, thereby exceed the linear working range of PA, may cause linear distortion.
Summary of the invention
The embodiment of the invention provides a kind of Poewr control method and equipment, with reasonable control transmitting power.
According to one embodiment of the invention, a kind of Poewr control method is provided, comprising:
Obtain the Initial Trans of a plurality of channels of power amplifier correspondence;
When the Initial Trans sum of described a plurality of channels surpasses the maximum transmission power of described power amplifier, reduce at least one minimum channel transmitting power of described a plurality of channel medium priority;
If channel after reducing transmitting power with a plurality of channels in the difference of other channel transmitting power greater than default thresholding A, if perhaps this channel after reducing transmitting power with a plurality of channels in the difference of other channel transmitting power spectrum densities greater than default thresholding B, then close this channel.
According to still another embodiment of the invention, provide a kind of subscriber equipment, comprising:
Acquiring unit is used to obtain the Initial Trans of a plurality of channels of power amplifier correspondence;
Adjustment unit is used for reducing at least one minimum channel transmitting power of described a plurality of channel medium priority when the Initial Trans sum of described a plurality of channels surpasses the maximum transmission power of described power amplifier;
Closing unit, if be used for a channel after reducing transmitting power with the difference of other channel transmitting power of a plurality of channels greater than default thresholding A, if perhaps this channel after reducing transmitting power with a plurality of channels in the difference of other channel transmitting power spectrum densities greater than default thresholding B, then close this channel.
According to description to technique scheme, the embodiment of the invention has following advantage: can realize power control by reducing the minimum one or more channel transmitting power of a plurality of channel medium priorities, if the channel after a certain reduction transmitting power is compared with other channel, the difference of transmitting power to each other or the difference of transmit power spectral density are greater than predetermined threshold, can close this channel, can prevent to occur between different channels the problem of the nonlinear loss of the excessive and PA that causes of transmitting power difference, improve data transmission performance.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, to do to introduce simply to the accompanying drawing that embodiment need use below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The schematic diagram of a kind of Poewr control method that Fig. 1 provides for embodiments of the invention;
A kind of channel emission power adjustment process schematic diagram that Fig. 2 provides for the embodiment of the invention;
The schematic diagram of a kind of subscriber equipment that Fig. 3 provides for embodiments of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The schematic diagram of a kind of Poewr control method that Fig. 1 provides for embodiments of the invention, this method comprises:
S11: the Initial Trans that obtains a plurality of channels of power amplifier correspondence;
S12: when the Initial Trans sum of described a plurality of channels surpasses the maximum transmission power of described power amplifier, reduce at least one minimum channel transmitting power of described a plurality of channel medium priority;
S13: if channel after reducing transmitting power with the difference of the difference of other channel transmitting power or transmit power spectral density greater than default thresholding, then close this channel.
Present embodiment is the Initial Trans of a plurality of channels of PA correspondence relatively, when the Initial Trans of a plurality of channels with exceed the PA maximum transmission power, can realize power control by reducing the minimum one or more channel transmitting power of a plurality of channel medium priorities, if the channel after a certain reduction transmitting power is compared with other channel, the difference of transmitting power to each other or the difference of transmit power spectral density are greater than predetermined threshold, can close this channel, it is excessive and cause the problem of the nonlinear loss of PA to prevent to occur between different channels the transmitting power difference, thereby improves data transmission performance.The Initial Trans of the described channel of present embodiment can calculate according to power control command, is called the calculating transmitting power of channel again.
Alternatively, when the highest channel transmitting power of a plurality of channel medium priorities during more than or equal to the maximum transmission power of described power amplifier, can directly close other channels except that the highest channel of priority, make the highest channel of priority adopt the maximum transmission power of described power amplifier to send data.Equipment in the present embodiment can calculate described a plurality of channel transmitting power according to the indication of power control command, with the calculating transmitting power of a plurality of channels of calculate obtaining respectively as the Initial Trans of described a plurality of channels.Present embodiment also can comprise: calculate described a plurality of channel transmitting power according to the indication of power control command, obtain the calculating transmitting power of described a plurality of channels; If exist 2 interchannels to calculate the difference of transmitting power in a plurality of channels greater than default thresholding, the Initial Trans that described a plurality of channel transmitting power then is set respectively is a plurality of channels makes the difference of the Initial Trans of any 2 interchannels in described a plurality of channel all smaller or equal to described default thresholding.Perhaps present embodiment can comprise: calculate described a plurality of channel transmitting power according to the indication of power control command, obtain the calculating transmitting power of described a plurality of channels; If exist 2 interchannels to calculate the difference of transmit power spectral density in a plurality of channels greater than default thresholding, the Initial Trans that described a plurality of channel transmitting power then is set respectively is a plurality of channels makes the difference of the Initial Trans spectrum density of any 2 interchannels in described a plurality of channel all smaller or equal to described default thresholding.
In one embodiment, it is poor that equipment can be adjusted the transmitting power of different channels, make described difference be not more than between the different channels that can tolerate maximum transmission power poor.Suppose that the PA maximum transmission power is P
CMAX, PA between the different channels that can tolerate the maximum transmission power difference be Δ P
Lim it, the calculating transmitting power of channel i is P
i, i=1 ..., N, wherein N is the number of channel of parallel transmission data in the current channel set.If
Can be satisfied by calculating
The minimum power adjustment amount of required adjustment
A kind of channel emission power adjustment process schematic diagram that Fig. 2 provides for the embodiment of the invention, described process comprises:
S21: the calculating transmitting power P that calculates N channel in the current channel set according to the indication of power control command
1..., P
N
S22: obtain a described N channel the calculating transmitting power and
S23: the calculating transmitting power of judging N channel with
Whether greater than the maximum transmission power P of power amplifier
CMAX, if carry out S24; If not, finish the power adjustment process.
S24: select not close (transmitting power is not 0) and the minimum channel of priority from N channel, whether the calculating transmitting power of judging the channel that priority is minimum is greater than minimum power adjustment amount Δ P
Adj, if carry out S25; If not, carry out S28.
S25: judge the minimum channel of priority after adjusting power and between the different channels that whether can tolerate greater than institute of the transmitting power difference of other interchannel maximum transmission power poor, if, execution S26; If not, carry out S27.
S26: close the minimum channel of described priority.The channel that suppose priorities is minimum is channel k, if channel k reduces transmitting power Δ P
AdjAfter cause itself and other channel transmitting power difference greater than Δ P
Lim it, then close channel k.
S27: the channel that described priority is minimum adopts adjusted transmitting power.If channel k reduces transmitting power Δ P
AdjAfter still can satisfy with other channel transmitting power differences at Δ P
Lim itIn the scope, then signaling channel k reduces transmitting power Δ P
Adj, the new transmitting power that promptly obtains channel k is P
k'=P
k-Δ P
Adj＞0, all the other channel powers are constant, for calculating transmitting power separately, and finish the power adjustment process.
S28: the channel that described priority is minimum is got rid of from current channel set, re-executes S21 according to the channel set after upgrading.If the calculating transmitting power of channel k equals Δ P
Adj, that is to say that the transmitting power of adjusting back channel k is 0, then can directly close channel k, all the other channel powers are constant, for calculating transmitting power separately, and finish the power adjustment process.If the calculating transmitting power of channel k is less than Δ P
Adj, then close channel k, continue to calculate total calculating transmitting power of residue (N-1) individual channel, upgrade Δ P again
Adj, from remaining (N-1) individual channel, select the minimum channel of priority, repeat said process, up to total calculating transmitting power smaller or equal to maximum transmission power; Perhaps repeat described adjustment process up to a surplus next channel only, this moment with remaining emission maximum work as this channel transmitting power.
Present embodiment provides the channel to PA subordinate to carry out the schematic flow sheet that power is adjusted, and can adjust between different channels the transmitting power difference to zone of reasonableness, thereby reduces the nonlinear loss of PA, improves data transmission performance.Need illustrate, before above-mentioned power is adjusted, if the highest channel transmitting power of priority is more than or equal to maximum transmission power, the direct channel of closeall other low priorities then, and make the highest channel of priority adopt maximum transmission power emission data.The channel that described priority is the highest can be a network settings, also can be that terminal is set according to ad hoc rules, also can make an appointment, and the network equipment and terminal is known this agreement in advance.The priority that for example can set PUCCH is higher than PUSCH; For a plurality of PUSCH, the priority of the PUSCH of the high-rise control of carrying signaling is higher than the priority of the PUSCH of bearer service data, the priority of the PUSCH that spectrum efficiency is high is higher than the priority of the low PUSCH of spectrum efficiency, and perhaps the priority of the PUSCH that transmitting power is high is lower than the priority of the low PUSCH of transmitting power; Perhaps the priority of PUCCH is higher than PUSCH; Even PUCCH itself also can set different priority, for example the priority of the channel of transferring ACK/NACK (being confirmed to be/confirming not message) is higher than the priority of the channel of the PUCCH that transmits CQI (CQI).
In the above-described embodiments, can satisfy the maximum transmission power requirement if reduce the minimum a plurality of channel transmitting power of described a plurality of channel medium priority, the power that is reduced simultaneously can not cause the transmitting power difference to exceed the scope of being tolerated, then will consider to reduce the minimum a plurality of channel transmitting power of described a plurality of channel medium priorities.Promptly in said process S24, can from N channel, select not close (transmitting power is not 0) and the minimum a plurality of channels of priority, suppose that selective channel is C
j, j=1 ..., M, M are the lower number of channel of selected priority,
Be channel C
jTransmitting power, if
Then this M channel is reduced power separately
, finish the power adjustment process.
In the above-described embodiments, the difference power of the calculating transmitting power of each channel all less than the different channels maximum transmission power difference Δ P that can tolerate
Lim itIf the calculating transmitting power difference that has 2 channels greater than the different channels maximum transmission power difference Δ P that can tolerate
Lim it, then need the calculating transmitting power of each channel is adjusted so that the calculating transmitting power difference of each interchannel smaller or equal to the Δ P of the different channels maximum transmission power that can tolerate
Lim itThe method of adjusting can be, is benchmark with the channel transmitting power of transmitting power maximum, with the difference of the channel transmitting power of other channels and transmitting power maximum be adjusted to smaller or equal to maximum transmission power Δ P between the different channels that can tolerate
Lim itBe benchmark perhaps, other channel transmitting power are all adjusted near the highest channel transmitting power of this priority Δ P with the highest channel transmitting power of priority
Lim itIn the scope, for example described a plurality of channel transmitting power are adjusted to the scope (channel transmitting power that priority is the highest-0.5 * Δ P
Lim it, the channel transmitting power that priority is the highest+0.5 * Δ P
Lim it) in; Perhaps all channel transmitting power are averaged, all channel transmitting power are all adjusted near the mean value Δ P
Lim itIn the scope, for example, the calculating transmitting power of described a plurality of channels is tried to achieve the first mean value X, described a plurality of channel transmitting power are adjusted to scope (first mean value X-0.5 * Δ P
Lim it, first mean value X+0.5 * Δ P
Lim it) in.
Be that benchmark is an example with the highest channel of priority below, specify the power of every other channel is adjusted near the highest channel transmitting power of priority Δ P
Lim itAdjustment process in the scope.Suppose that maximum transmission power is P
MAX, the transmitting power difference of the different channels that can tolerate be Δ P
Lim it, N channel parallel transmission data, the transmitting power of channel i is P
i, and P
i≠ 0, from N channel, select the highest channel of priority, be made as channel k, travel through all channel i, if i ≠ k is Δ P
I, k=| P
i-P
k| greater than Δ P
Lim it/ 2, then the transmitting power of signaling channel i reduces or raises up to Δ P
I, k=| P
i-P
k| smaller or equal to Δ P
Lim it/ 2.If suppose to have only two channels, adjusted like this transmitting power difference is Δ P
Lim it/ 2, in fact only need to adjust different channels transmitting power difference extremely less than Δ P
Lim it, therefore such adjustment exists adjusts excessive possibility.
To introduce below and a kind of other channel transmitting power be adjusted near the highest channel transmitting power of priority Δ P
Lim itMethod embodiment in the scope.
Suppose the transmitting power difference of the different channels that can tolerate be Δ P
Lim it, N channel parallel transmission data, the transmitting power of channel i is P
i, and P
i≠ 0, the transmitting power of channel j is P
j, and P
j≠ 0, make Δ P
I, j=P
i-P
jIf, travel through the combination of all i and j, all satisfy Δ P
I, j=| P
i-P
j| smaller or equal to Δ P
Lim it, i.e. max|P
i-P
j|≤Δ P
Max,
, then do not need to adjust.Otherwise, from N channel, select the highest channel of priority, be made as channel k, if to any i, i ≠ k satisfies Δ P
I, k=P
i-P
k＞0, then make all satisfy Δ P
I, k＞Δ P
Lim itThe transmitting power of channel i be P
i'=P
k-Δ P
Lim it, all the other channel powers are constant, finish adjustment process.If to any i, i ≠ k satisfies Δ P
I, k=P
i-P
k＜0, then make all satisfy Δ P
I, k＜-Δ P
Lim itThe transmitting power of channel i be P
i'=P
k+ Δ P
Lim it, all the other channel powers are constant, finish adjustment process.If some channel i satisfies Δ P
I, k=P
i-P
k＞0, some channel i satisfies Δ P
I, k=P
i-P
k＜0, and these channels i max (Δ P that all satisfies condition
I, k)＜Δ P
Lim it/ 2＜-min (Δ P
I, k), then all are satisfied Δ P
I, k=P
i-P
k＜0 channel i, its power that raises is P
i'=P
k-max (Δ P
I, k)+Δ P
Lim it, all the other channel powers are constant, finish adjustment process; If-min is (Δ P
I, k)＜Δ P
Lim it/ 2＜max (Δ P
I, k), then all are satisfied Δ P
I, k=P
i-P
k＞0 channel i, reducing its power is P
i'=P
k+ min (Δ P
I, k)+Δ P
Lim it, all the other channel powers are constant, finish adjustment process; If some channel i satisfies Δ P
I, k=P
i-P
k＞0, some channel i satisfies Δ P
I, k=P
i-P
k＜0, and these channels max (Δ P that do not satisfy condition
I, k)＜Δ P
Lim it/ 2＜-min (Δ P
I, k) or P
i'=P
k-max (Δ P
I, k)+Δ P
Lim it, then traveling through all channel i, if i ≠ k is Δ P
I, k=| P
i-P
k| greater than Δ P
Lim it/ 2, the transmitting power of signaling channel i reduces or raises up to Δ P
I, k=| P
i-P
k| smaller or equal to Δ P
Lim it/ 2.
In one embodiment, the transmit power spectral density difference of different channels can not greater than the different channels maximum transmission power spectrum density that can tolerate poor.The transmitting power of supposing channel i is P
i, the transmission band size of channel i is B
i, then the power in the channel i unit transmission bandwidth is β
i=P
i/ B
i(being also referred to as power spectral density).Then the maximum transmission power that can tolerate poor, be meant the difference power Δ β in different unit transmission bandwidths
Lim itIf
Then at first from N channel, select the minimum channel of priority, be assumed to be channel k, order
Make P
k'=P
k-Δ P
Adj, β
k'=P
k'/B
kIf, P
k'=P
k-Δ P
Adj＞0, and max| β
k'-β
k|≤Δ β
Lim it,
Then the transmitting power of signaling channel k is P
k', all the other channel powers are constant, finish the power adjustment process; If P
k'=P
k-Δ P
Adj＞0, and max| β
k'-β
i|＞Δ β
Lim it,
Then close channel k, all the other channel powers are constant, finish the power adjustment process.If P
k'=P
k-Δ P
Adj=0, then close channel k, all the other channel powers are constant, finish the power adjustment process.If P
k'=P
k-Δ P
Adj＜0, then close channel k, from remaining (N-1) individual channel, select the minimum channel of priority, repeat said process, up to total calculating transmitting power sum smaller or equal to described maximum transmission power, perhaps up to only surplus next channel, this moment, this channel transmitting power was remaining maximum transmission power.
Accordingly, if the calculating transmitting power of each channel can not all satisfy for all channel i and j | β
i-β
j|≤Δ β
Lim it, then need each channel transmitting power is adjusted, so that all channel i and j are satisfied | β
i-β
j|≤Δ β
Lim itThe method of adjusting can be, channel emission power spectrum density with the transmit power spectral density maximum is a benchmark, with the difference of the power spectral density of the channel of the power spectral density of other channels and transmitting power maximum adjust to less than the different channels maximum transmission power spectrum density Δ β that can tolerate
Lim itIn the scope; Be benchmark perhaps, allow every other channel transmitting power spectrum density all adjust near the Δ β of the highest channel transmitting power spectrum density of described priority with the highest channel transmitting power of priority
Lim itIn the scope, for example described a plurality of channel transmitting power spectrum densities are adjusted to scope (the channel transmitting power spectrum density that priority is the highest-0.5 * Δ β
Lim it, the channel transmitting power spectrum density that priority is the highest+0.5 * Δ β
Lim it) in; Perhaps all channel transmitting power spectrum densities are averaged, allow all channel transmitting power spectrum densities all adjust near the Δ β of described mean value
Lim itIn the scope, for example the calculating transmit power spectral density of described a plurality of channels is tried to achieve the second mean value Y, described a plurality of channel transmitting power spectrum densities are adjusted to scope (second mean value Y-0.5 * Δ β
Lim it, second mean value Y+0.5 * Δ β
Lim it) in.
The difference that provides below the present embodiment the interchannel transmit power spectral density of every other channel emission power maximum is adjusted to less than Δ β
Lim itSpecific implementation method in the scope.Suppose that maximum power spectral densities is β
k, for all transmit power spectral density and β
kDifference greater than Δ β
Lim itChannel i, adjusting its power spectral density is β
i'=β
k+ Δ β
Lim it, its transmitting power is P
i'=β
i' * B
i
Provide again below and a kind of other channel transmitting power spectrum densities are adjusted near the Δ β the highest channel transmitting power spectrum density of priority
Lim itSpecific implementation method in the scope.The power spectral density of the channel that suppose priorities is the highest is β
k, for all β that satisfies condition
k-β
i＞Δ β
Lim it/ 2 channel i, adjusting its power spectral density is β
i'=β
k+ Δ β
Lim it/ 2, its transmitting power is P
i'=β
i' * B
iFor all β that satisfies condition
k-β
i＜-Δ β
Lim it/ 2 channel i, adjusting its power spectral density is β
i'=β
k-Δ β
Lim it/ 2, its transmitting power is P
i'=β
i' * B
i
Provide near a kind of Δ β of power spectral density that adjusts a plurality of channel transmitting power spectrum densities channel that extremely described priority is the highest below again
Lim itSpecific implementation method in the scope.If travel through the combination of all i and j, all satisfy Δ β
I, j=| β
i-β
j|≤Δ β
Lim it, i.e. max| β
i-β
j|≤Δ β
Max,
Then do not need to carry out the power adjustment.Otherwise, from N channel, select the highest channel of priority, be made as channel k, its power spectral density is β
kIf to any i, i ≠ k satisfies Δ β
I, k=β
i-β
k＞0, then make all satisfy Δ β
I, k＞Δ β
Lim itThe transmit power spectral density of channel i be β
i'=β
k-Δ β
Lim it, transmitting power is P
i'=β
i' * B
i, all the other channel powers are constant, finish adjustment process; If to any i, i ≠ k satisfies Δ β
I, k=β
i-β
k＜0, then make all satisfy Δ β
I, k＜-Δ β
Lim itThe transmit power spectral density of channel i be β
i'=β
k+ Δ β
Lim it, transmitting power is P
i'=β
i' * B
i, finish adjustment process.If the channel that has satisfies Δ β
I, k=β
i-β
k＞0, the channel that has satisfies Δ β
I, k=β
i-β
k＜0, if channel all satisfies max (Δ β
I, k)＜Δ β
Lim it/ 2＜-min (Δ β
I, k), then all are satisfied Δ β
I, k=β
i-β
k＜0 channel i, its power spectral density that raises is β
i'=β
k-max (Δ β
I, k)+Δ β
Lim it, all the other channel powers are constant, finish adjustment process; If channel satisfies-min (Δ β
I, k)＜Δ β
Lim it/ 2＜max (Δ β
I, k), then all are satisfied Δ β
I, k=β
i-β
k＞0 channel i, reducing its power spectral density is β
i'=β
k+ min (Δ β
I, k)+Δ β
Lim it, all the other channel powers are constant, finish adjustment process; If the channel that has satisfies Δ β
I, k=β
i-β
k＞0, the channel that has satisfies Δ β
I, k=β
i-β
k＜0, its max (Δ β that do not satisfy condition
I, k)＜Δ β
Lim it/ 2＜-min (Δ β
I, k) or-min (Δ β
I, k)＜Δ β
Lim it/ 2＜max (Δ β
I, k) condition, then traveling through all channel i, i ≠ k satisfies Δ β to all
I, k=| β
i-β
k| greater than Δ β
Lim it/ 2 channel i reduce its transmit power spectral density or are increased to Δ β
I, k=| β
i-β
k| smaller or equal to Δ β
Lim it/ 2.
Need to prove, the transmitting power difference of the control different channels of present embodiment indication can not greater than different channels maximum transmission power difference or the maximum transmission power spectrum density that can tolerate, be meant on same PA a plurality of channels of transmission simultaneously.For channel transmitted on different PA, then there is not this qualification, perhaps limit value is than more looser on same PA.
The schematic diagram of a kind of subscriber equipment that Fig. 3 provides for embodiments of the invention, this equipment comprises:
Acquiring unit 31 is used to obtain the Initial Trans of a plurality of channels of power amplifier correspondence;
Closing unit 33, if be used for a channel after reducing transmitting power with the difference of other channel transmitting power of a plurality of channels greater than default thresholding A, if perhaps this channel after reducing transmitting power with a plurality of channels in the difference of other channel transmitting power spectrum densities greater than default thresholding B, then close this channel.
This subscriber equipment can effectively carry out power control, avoids the different channels transmitting power of PA in the subscriber equipment or power spectral density difference excessive and the PA nonlinear loss that causes improves data transmission performance.With method embodiment accordingly, described acquiring unit 31 can further comprise: first computing module, be used for calculating a plurality of channel transmitting power of power amplifier correspondence according to the indication of power control command, with the calculating transmitting power of described a plurality of channels of calculating respectively as the Initial Trans of described a plurality of channels.Perhaps, described acquiring unit 31 can further comprise: second computing module, be used for a plurality of channel transmitting power according to the indication calculating power amplifier correspondence of power control command, and obtain the calculating transmitting power of described a plurality of channels; First adjusting module, exist the difference of calculating transmitting power of 2 interchannels greater than default thresholding A if be used for a plurality of channels, the Initial Trans that described a plurality of channel transmitting power then is set respectively is a plurality of channels makes the difference of the Initial Trans of any 2 interchannels in described a plurality of channel all smaller or equal to described default thresholding A.Perhaps, described acquiring unit 31 can further comprise: the 3rd computing module, be used for a plurality of channel transmitting power according to the indication calculating power amplifier correspondence of power control command, and obtain the calculating transmitting power of described a plurality of channels; Second adjusting module, exist the difference of calculating transmit power spectral density of 2 interchannels greater than default thresholding B if be used for a plurality of channels, the Initial Trans that described a plurality of channel transmitting power then is set respectively is a plurality of channels makes the difference of the Initial Trans spectrum density of any 2 interchannels in described a plurality of channel all smaller or equal to described default thresholding B.
The described subscriber equipment that present embodiment relates to can include but not limited to mobile phone, notebook computer, PDA all kinds of terminal equipments such as (Personal Digital Assistant, personal digital assistants).
One of ordinary skill in the art will appreciate that all or part of flow process among the said method embodiment, can instruct related hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
The above only is several embodiments of the present invention, and those skilled in the art can carry out various changes or modification to the present invention according to the disclosed content of application documents and not break away from the spirit and scope of the present invention.One of ordinary skill in the art will appreciate that between described embodiment or under situation about not clashing, can interosculate between the feature of different embodiment and form new embodiment.
Claims (11)
1. a Poewr control method is characterized in that, comprising:
Obtain the Initial Trans of a plurality of channels of power amplifier correspondence;
When the Initial Trans sum of described a plurality of channels surpasses the maximum transmission power of described power amplifier, reduce at least one minimum channel transmitting power of described a plurality of channel medium priority;
If channel after reducing transmitting power with a plurality of channels in the difference of other channel transmitting power greater than the first default thresholding A, if perhaps this channel after reducing transmitting power with a plurality of channels in the difference of other channel transmitting power spectrum densities greater than the second default thresholding B, then close this channel.
2. the method for claim 1 is characterized in that, also comprises:
When the highest channel transmitting power of described a plurality of channel medium priorities during more than or equal to the maximum transmission power of described power amplifier, can directly close other channels except that the highest channel of priority, make the highest channel of priority adopt the maximum transmission power of described power amplifier to send data.
3. method as claimed in claim 1 or 2, it is characterized in that, the described Initial Trans that obtains a plurality of channels of power amplifier correspondence comprises: calculate a plurality of channel transmitting power of power amplifier correspondence according to the indication of power control command, with the calculating transmitting power of described a plurality of channels of calculating respectively as the Initial Trans of described a plurality of channels.
4. method as claimed in claim 1 or 2 is characterized in that, the described Initial Trans that obtains a plurality of channels of power amplifier correspondence comprises:
Calculate a plurality of channel transmitting power of power amplifier correspondence according to the indication of power control command, obtain the calculating transmitting power of described a plurality of channels;
Preset thresholding A if there is the difference of the calculating transmitting power of 2 interchannels in a plurality of channels greater than first, the Initial Trans that described a plurality of channel transmitting power then is set respectively is a plurality of channels makes the difference of the Initial Trans of any 2 interchannels in described a plurality of channel all smaller or equal to the described first default thresholding A.
5. method as claimed in claim 4, it is characterized in that, the described Initial Trans that described a plurality of channel transmitting power is set respectively is a plurality of channels makes that the difference of the Initial Trans of any 2 interchannels all comprises smaller or equal to the described first default thresholding A in described a plurality of channel:
The difference of other channel transmitting power that the channel of the channel of transmitting power maximum in a plurality of channels and this transmitting power maximum is outer all is adjusted to smaller or equal to the described first default thresholding A; Perhaps
Described a plurality of channel transmitting power are adjusted in the scope (channel transmitting power that priority is the highest-0.5 * the first is preset thresholding A, and thresholding A is preset in the channel transmitting power that priority is the highest+0.5 * the first); Perhaps
The calculating transmitting power of described a plurality of channels is tried to achieve the first mean value X, described a plurality of channel transmitting power are adjusted in the scope (first mean value X-0.5 * first preset thresholding A, and first mean value X+0.5 * first preset thresholding A).
6. method as claimed in claim 1 or 2 is characterized in that, the described Initial Trans that obtains a plurality of channels of power amplifier correspondence comprises:
Calculate a plurality of channel transmitting power of power amplifier correspondence according to the indication of power control command, obtain the calculating transmitting power of described a plurality of channels;
Preset thresholding B if there is the difference of the calculating transmit power spectral density of 2 interchannels in a plurality of channels greater than second, the Initial Trans that described a plurality of channel transmitting power then is set respectively is a plurality of channels makes the difference of the Initial Trans spectrum density of any 2 interchannels in described a plurality of channel all smaller or equal to the described second default thresholding B.
7. method as claimed in claim 6, it is characterized in that, the described Initial Trans that described a plurality of channel transmitting power is set respectively is a plurality of channels makes that the difference of the Initial Trans spectrum density of any 2 interchannels all comprises smaller or equal to the described second default thresholding B in described a plurality of channel:
The difference of other channel transmitting power spectrum density that the channel of the channel of transmit power spectral density maximum in a plurality of channels and this transmit power spectral density maximum is outer all is adjusted to smaller or equal to the described second default thresholding B; Perhaps
Described a plurality of channel transmitting power spectrum densities are adjusted in the scope (the default thresholding B of the channel transmitting power spectrum density-0.5 * the second that priority is the highest, the default thresholding B in channel transmitting power spectrum density+0.5 * the second that priority is the highest); Perhaps
The calculating transmit power spectral density of described a plurality of channels is tried to achieve the second mean value Y, described a plurality of channel transmitting power spectrum densities are adjusted in the scope (second mean value Y-0.5 * second preset thresholding B, and second mean value Y+0.5 * second preset thresholding B).
8. a subscriber equipment is characterized in that, comprising:
Acquiring unit is used to obtain the Initial Trans of a plurality of channels of power amplifier correspondence;
Adjustment unit is used for reducing at least one minimum channel transmitting power of described a plurality of channel medium priority when the Initial Trans sum of described a plurality of channels surpasses the maximum transmission power of described power amplifier;
Closing unit, after reducing transmitting power, preset thresholding A greater than first if be used for a channel with the difference of other channel transmitting power of a plurality of channels, if perhaps this channel after reducing transmitting power with a plurality of channels in the difference of other channel transmitting power spectrum densities greater than the second default thresholding B, then close this channel.
9. equipment as claimed in claim 8, it is characterized in that, described acquiring unit comprises: first computing module, be used for calculating a plurality of channel transmitting power of power amplifier correspondence according to the indication of power control command, with the calculating transmitting power of described a plurality of channels of calculating respectively as the Initial Trans of described a plurality of channels.
10. equipment as claimed in claim 8 is characterized in that, described acquiring unit comprises:
Second computing module is used for a plurality of channel transmitting power according to the indication calculating power amplifier correspondence of power control command, obtains the calculating transmitting power of described a plurality of channels;
First adjusting module, exist the difference of the calculating transmitting power of 2 interchannels to preset thresholding A if be used for a plurality of channels greater than first, the Initial Trans that described a plurality of channel transmitting power then is set respectively is a plurality of channels makes the difference of the Initial Trans of any 2 interchannels in described a plurality of channel all smaller or equal to the described first default thresholding A.
11. equipment as claimed in claim 8 is characterized in that, described acquiring unit comprises:
The 3rd computing module is used for a plurality of channel transmitting power according to the indication calculating power amplifier correspondence of power control command, obtains the calculating transmitting power of described a plurality of channels;
Second adjusting module, exist the difference of the calculating transmit power spectral density of 2 interchannels to preset thresholding B if be used for a plurality of channels greater than second, the Initial Trans that described a plurality of channel transmitting power then is set respectively is a plurality of channels makes the difference of the Initial Trans spectrum density of any 2 interchannels in described a plurality of channel all smaller or equal to the described second default thresholding B.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101122760A CN102149179B (en) | 2010-02-09 | 2010-02-09 | Method and device for controlling power |
| PCT/CN2010/079691 WO2011097917A1 (en) | 2010-02-09 | 2010-12-13 | Method and device for controlling power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101122760A CN102149179B (en) | 2010-02-09 | 2010-02-09 | Method and device for controlling power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102149179A true CN102149179A (en) | 2011-08-10 |
| CN102149179B CN102149179B (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101122760A Active CN102149179B (en) | 2010-02-09 | 2010-02-09 | Method and device for controlling power |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102149179B (en) |
| WO (1) | WO2011097917A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104604318A (en) * | 2012-08-23 | 2015-05-06 | 交互数字专利控股公司 | Providing physical layer resources to different serving sites |
| US9973322B2 (en) | 2010-02-12 | 2018-05-15 | Interdigital Technology Corporation | Data split between multiple sites |
| US10349463B2 (en) | 2012-08-23 | 2019-07-09 | Interdigital Patent Holdings, Inc. | Operating with multiple schedulers in a wireless system |
| CN110113810A (en) * | 2018-02-01 | 2019-08-09 | 华为技术有限公司 | A kind of Poewr control method, relevant apparatus and product |
| US10560944B2 (en) | 2010-12-03 | 2020-02-11 | Interdigital Patent Holdings, Inc. | Methods, apparatus and systems for performing multi-radio access technology carrier aggregation |
| CN111615120A (en) * | 2019-06-19 | 2020-09-01 | 维沃移动通信有限公司 | Priority updating method, equipment and system |
| US11838849B2 (en) | 2011-07-29 | 2023-12-05 | Interdigital Patent Holdings, Inc. | Methods and apparatus for radio resources management in multi-radio access technology wireless systems |
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| US6473133B1 (en) * | 1999-05-14 | 2002-10-29 | Harris Corporation | Broadcast transmission system with correction for distortion caused by amplifying and signal conditioning components at a different rate |
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| US7079809B1 (en) * | 2002-02-07 | 2006-07-18 | Kathrein-Werke Kg | Systems and methods for providing improved wireless signal quality using diverse antenna beams |
| EP1634388B1 (en) * | 2003-06-13 | 2007-04-18 | Siemens Aktiengesellschaft | Power control for a mobile radio communication system |
| CN100583718C (en) * | 2004-06-09 | 2010-01-20 | 三星电子株式会社 | Method and apparatus for data transmission in a mobile telecommunication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9973322B2 (en) | 2010-02-12 | 2018-05-15 | Interdigital Technology Corporation | Data split between multiple sites |
| US10560944B2 (en) | 2010-12-03 | 2020-02-11 | Interdigital Patent Holdings, Inc. | Methods, apparatus and systems for performing multi-radio access technology carrier aggregation |
| US11363597B2 (en) | 2010-12-03 | 2022-06-14 | Interdigital Patent Holdings, Inc. | Methods, apparatus and systems for performing multi-radio access technology carrier aggregation |
| US11838849B2 (en) | 2011-07-29 | 2023-12-05 | Interdigital Patent Holdings, Inc. | Methods and apparatus for radio resources management in multi-radio access technology wireless systems |
| CN104604318A (en) * | 2012-08-23 | 2015-05-06 | 交互数字专利控股公司 | Providing physical layer resources to different serving sites |
| CN104604318B (en) * | 2012-08-23 | 2019-03-12 | 交互数字专利控股公司 | Physical layer resources are provided to different services sites |
| US10349463B2 (en) | 2012-08-23 | 2019-07-09 | Interdigital Patent Holdings, Inc. | Operating with multiple schedulers in a wireless system |
| US10973019B2 (en) | 2012-08-23 | 2021-04-06 | Interdigital Patent Holdings, Inc. | Physical layer operation for multi-layer operation in a wireless system |
| US11184942B2 (en) | 2012-08-23 | 2021-11-23 | Interdigital Patent Holdings, Inc. | Operating with multiple schedulers in a wireless system |
| US11716781B2 (en) | 2012-08-23 | 2023-08-01 | Interdigital Patent Holdings, Inc. | Operating with multiple schedulers in a wireless system |
| CN110113810A (en) * | 2018-02-01 | 2019-08-09 | 华为技术有限公司 | A kind of Poewr control method, relevant apparatus and product |
| CN111615120A (en) * | 2019-06-19 | 2020-09-01 | 维沃移动通信有限公司 | Priority updating method, equipment and system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011097917A1 (en) | 2011-08-18 |
| CN102149179B (en) | 2013-08-14 |
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