CN105307253A - Power control method, system and device for high-power cluster terminal - Google Patents
Power control method, system and device for high-power cluster terminal Download PDFInfo
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- CN105307253A CN105307253A CN201410365001.6A CN201410365001A CN105307253A CN 105307253 A CN105307253 A CN 105307253A CN 201410365001 A CN201410365001 A CN 201410365001A CN 105307253 A CN105307253 A CN 105307253A
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Abstract
The invention provides a power control method, system and device for a high-power cluster terminal in a TD-LTE system, wherein the high-power cluster terminal is a cluster terminal, the power of which is higher than the maximal output power specified by LTE standards. The method comprises the following steps that: an eNB sends the maximal allowable transmitting power PRB_MAX of the high-power cluster terminal at an RB to the high-power cluster terminal; and the high-power cluster terminal determines the transmitting power PPUSCH(i) of the high-power cluster terminal in a physical uplink shared channel (PUSCH) in a sub-frame i according to the PRB_MAX and other related parameters. According to the invention, power control of the high-power cluster terminal in the TD-LTE system can be carried out.
Description
Technical field
The present invention relates to the power control techniques field of TD-LTE system, particularly relate in TD-LTE system the Poewr control method of high-power cluster terminal, system and device.
Background technology
TD-LTE technology is new generation broadband mobile communication wireless access technology, the features such as compared with the wireless access technology of existing 2G, 3G mobile communication system, it has, and transmission rate is high, propagation delay time is little, high QoS guarantee.Technical at existing TD-LTE, increase the characteristic of group service, realize the developing direction that TD-LTE wideband digital trunked communication system is trunked communication system.
At present, based on the wideband digital trunked communication system of TD-LTE technology, the peak power output of existing colony terminal follows 3GPPLTE agreement, the requirement of the terminal of current defined power grade 3 is the peak power outputs in channel width under any transmitted bandwidth is 23dBm, and at this, we are called LTE standard power colony terminal to this terminal.In order to the colony terminal ensureing to be in shadow region in community or cell edge still can carry out the larger business of speed, wideband digital trunked communication system based on TD-LTE technology needs to increase a kind of colony terminal being greater than the peak power output that LTE standard specifies, at this, we are called high-power cluster terminal to this terminal.Like this, the terminal (LTE standard power colony terminal and high-power cluster terminal) with different peak power output can be there is in group system.Group system needs to solve the problem of high-power cluster terminal being carried out to power control, and how to support the terminal with different peak power output carry out the problem of power control, particularly high-power cluster terminal on LTE standard power colony terminal bring the impact of interference.
In LTE protocol, specify that the power of TD-LTE terminal (UE) has 4 grades.The current requirement that define only power grade 3, require that, for all TDD frequency ranges, the peak power output in channel width under any transmitted bandwidth is 23dBm, tolerance limit is ± 2dB.The Measuring Time of transmitting power is at least a subframe.Allow its configuration maximum transmission power of terminal profile P
cMAX.Its numerical value is in such as Lower Limits:
P
CMAX_L≤P
CMAX≤P
CMAX_H
Wherein:
P
CMAX_L＝MIN{P
EMAX–ΔT
C,P
PowerClass–MPR–A-MPR–T
C}；
P
CMAX_H＝MIN{P
EMAX,P
PowerClass}；
P
eMAXbe the numerical value that base station sends the cell P-Max of RRC information, define in LTE36.331 agreement;
P
powerClassbe terminal peak power output, do not consider the various tolerance limits defined, as being 23dBm for the terminal of grade 3;
MPR is that maximum power reduces, and on the basis of the peak power output of definition, due to the introducing that high order modulation and transmitted bandwidth configure, allows peak power output to decrease.
A-MPR is that extra maximum power reduces, and in order to reach some extra requirements, peak power output allows extra maximum power to reduce.
Δ T
c: being 0dB for TDD frequency range, is 1.5dB for some FDD frequency range.
In LTE system, uplink power control determines the average power of a SC-OFDM symbol in physical channel.Power for Uplink Shared Channel controls to be transmitting power in order to adjust Uplink Shared Channel, thus can the impact of compensating for path loss, shadow fading and rapid fading etc.; Meanwhile, the power of Uplink Shared Channel controls the interference level that also may be used for controlling minizone, reduces the interference between co-frequency cell.LTE standard controls to specify to Uplink Shared Channel power, the through-put power P of UE Physical Uplink Shared Channel (PUSCH, PhysicalUplinkSharedCHannel) in subframe i
pUSCHi () is defined as:
P
PUSCH(i)＝min{P
CMAX,10log
10(M
PUSCH(i))+P
O_PUSCH(j)+α(j)·PL+Δ
TF(i)+f(i)}[dBm]
In formula, P
cMAXbe the maximum permission transmitting power determined by UE grade, configured by high level; M
pUSCHi () is the resource size for PUSCH distribution come into force in the i-th subframe, represent with Resource Block (RB) number; P
o_PUSCHj () is PUSCH power initial value, provided by high-level signaling.P
o_PUSCHj j that () is configured by high level can get the cell-level parameter P of 0 or 1
o_NOMINAL_PUSCHj () and the j configured by high level can get the UE level parameter P of 0 or 1
o_UE_PUSCHj () sum forms.During j=0, the PUSCH transmission of corresponding semi-static mandate or re-transmission; During j=1, the PUSCH transmission of corresponding dynamic authorization or re-transmission; During j=2, the PUSCH transmission of corresponding accidental access response mandate or re-transmission, now P
o_NOMINAL_PUSCH(2)=P
o_PRE+ Δ
pREAMBLE_Msg3, P
o_UE_PUSCH(2)=0, wherein, P
0_PREand Δ
pREAMBLE_Msg3configured by high-level signaling; As j=0 or 1, { 0,0.4,0.5,0.6,0.7,0.8,0.9,1} is the cell-level parameter of 3bit high level configuration to α ∈; As j=2, α (j)=1; PL is the downlink path loss that UE side calculates; If K
swhen=1.25,
represent power offset that different MCS mode is corresponding different (MPR is larger, need transmitting power larger); If K
swhen=0, Δ
tFi ()=0, represents the function of closing and carrying out power adjustment with MCS.K
sthe exclusive parameter d eltaMCS-Enabled of the UE configured by high level determines.
send by not having the PUSCH of UL-SCH for control data, other equal 1; δ
pUSCHbe the exclusive power correction value of UE, also referred to as TPC command, it is included in the PDCCH of DCI format 0, or with other TPC command combined codings after be carried on PDCCH that DCI format is 3/3A, and use TPC-PUSCH-RNTI to carry out scrambling to CRC check bit.Current PUSCH power controls adjustment state and is provided by f (i), it is defined as: if opened the power adjustment of accumulated value mode by the exclusive parameter Accumulation-enabled of UE of high-rise notice, then f (i)=f (i-1)+δ
pUSCH(i-K
pUSCH), wherein δ
pUSCH(i-K
pUSCH) by DCI format 0 or 3/3A at subframe i-K
pUSCHmiddle notice, f (0) is the first value after accumulated value resets, K
pUSCHspecifically in table 1.If do not opened the power adjustment of aggregate-value mode by the exclusive parameter Accumulation-enabled of UE of high-rise notice, then f (i)=δ
pUSCH(i-K
pUSCH), wherein δ
pUSCH(i-K
pUSCH) by subframe i-K
pUSCHin have DCI format 0 PDCCH instruction, K
pUSCHspecifically in table 1.
The K of table 1TDD configuration 0 ~ 6
pUSCHvalue
According to the demand of industry user, increase by a class high-power cluster terminal at the wideband digital trunked communication system of TD-LTE technology, the peak power output of this terminal is greater than the peak power output (23dBm) that existing LTE protocol specifies, the peak power output of such as high-power cluster terminal is 38dBm.Like this, the terminal (LTE standard power colony terminal and high-power cluster terminal) with different peak power output can be there is in group system.Existing LTE protocol does not support high-power cluster terminal, therefore there is not the Poewr control method to high-power cluster terminal in TD-LTE system at present.
Summary of the invention
The invention provides the Poewr control method to high-power cluster terminal in a kind of TD-LTE system, power can be performed to the high-power cluster terminal in TD-LTE system and control.
Present invention also offers in a kind of TD-LTE system and system that power controls, eNB and high-power cluster terminal are realized to high-power cluster terminal, power can be performed to the high-power cluster terminal in TD-LTE system and control.
Technical scheme of the present invention is achieved in that
To a Poewr control method for high-power cluster terminal in TD-LTE system, described high-power cluster terminal is the colony terminal being greater than the peak power output that LTE standard specifies, comprising:
ENB sends the maximum permission transmitting power P of high-power cluster terminal at RB to high-power cluster terminal
rB_MAX;
High-power cluster terminal is according to described P
rB_MAXand the through-put power P of other relevant parameter determination high-power cluster terminals Physical Uplink Shared Channel PUSCH in subframe i
pUSCH(i).
In TD-LTE system, high-power cluster terminal is realized to a system for power control, described high-power cluster terminal is the colony terminal being greater than the peak power output that LTE standard specifies, described system comprises:
ENB, for sending the maximum permission transmitting power P of high-power cluster terminal at RB to high-power cluster terminal
rB_MAX;
High-power cluster terminal, according to described P
rB_MAXand the through-put power P of other relevant parameter determination high-power cluster terminals Physical Uplink Shared Channel PUSCH in subframe i
pUSCH(i).
In TD-LTE system, high-power cluster terminal is realized to an eNB for power control, described high-power cluster terminal is the colony terminal being greater than the peak power output that LTE standard specifies, described eNB comprises:
Parameter sending module, for sending the maximum permission transmitting power P of high-power cluster terminal at RB to high-power cluster terminal
rB_MAX, for the through-put power P of high-power cluster terminal determination high-power cluster terminal Physical Uplink Shared Channel PUSCH in subframe i
pUSCH(i).
Realize the high-power cluster terminal that power controls in TD-LTE system, described high-power cluster terminal is the colony terminal being greater than the peak power output that LTE standard specifies, comprising:
Parameter receiver module, for receiving the maximum permission transmitting power P of high-power cluster terminal at RB
rB_MAX;
Power control module, for according to described P
rB_MAXand the through-put power P of other relevant parameter determination high-power cluster terminals Physical Uplink Shared Channel PUSCH in subframe i
pUSCH(i).
Visible, in the TD-LTE system that the present invention proposes, high-power cluster terminal is realized to the method, system and device of power control, send the maximum permission transmitting power P of high-power cluster terminal at RB by eNB to high-power cluster terminal
rB_MAX; High-power cluster terminal realizes power according to the aforementioned parameters received and other relevant parameters and controls.
Accompanying drawing explanation
Fig. 1 is the Poewr control method realization flow figure to high-power cluster terminal in the TD-LTE system that proposes of the present invention;
Fig. 2 realizes to high-power cluster terminal the system configuration schematic diagram that power controls in the TD-LTE system that proposes of the present invention;
Fig. 3 realizes to high-power cluster terminal the eNB structural representation that power controls in the TD-LTE system that proposes of the present invention;
Fig. 4 realizes to high-power cluster terminal in the TD-LTE system that proposes of the present invention the high-power cluster terminal structure schematic diagram that power controls.
Embodiment
The present invention proposes the Poewr control method to high-power cluster terminal in a kind of TD-LTE system, and wherein high-power cluster terminal refers to the colony terminal being greater than the peak power output that LTE standard specifies, as the realization flow figure that Fig. 1 is the method, comprising:
Step 101:eNB sends the maximum permission transmitting power of high-power cluster terminal at RB to high-power cluster terminal;
Step 102: high-power cluster terminal is according to described P
rB_MAXand the through-put power P of other relevant parameter determination high-power cluster terminals PUSCH in subframe i
pUSCH(i).
Below lift specific embodiment to introduce in detail.
Embodiment one:
Based on there is the terminal with different peak power output in TD-LTE group system: LTE standard power colony terminal and high-power cluster terminal.For LTE standard power colony terminal, continue to use the regulation that LTE standard controls Uplink Shared Channel power, i.e. the through-put power P of LTE standard power colony terminal PUSCH in subframe i
pUSCHbe defined as:
P
PUSCH(i)＝min{P
CMAX,10log
10(M
PUSCH(i))+P
O_PUSCH(j)+α(j)·PL+Δ
TF(i)+f(i)}[dBm]
(1)
For high-power cluster terminal, the present invention takes into account the link efficiency improving high-power cluster terminal and considers the interference these two aspects of minizone with the high-power terminal of reduction, the regulation controlled the Uplink Shared Channel power of high-power terminal is proposed, i.e. the through-put power P of high-power cluster terminal PUSCH in subframe i
pUSCHbe defined as: P
pUSCH(i)=min{P
cMAX, 10log
10(M
pUSCH(i))+P
rB_MAX, 10log
10(M
pUSCH(i))+P
o_PUSCH(j)+α (j) PL+ Δ
tF(i)+f (i) } [dBm] (2)
Wherein, P
cMAXallow its configuration maximum transmission power of high-power cluster terminal profile.
P
rB_MAXthe maximum permission transmitting power of high-power cluster terminal at Resource Block (RB).The same LTE protocol of regulation of other parameters in formula (2), does not do tired stating at this.
Introduce P in formula (2) below
cMAXand P
rB_MAXobtain manner.
First, P
cMAXnumerical value in such as Lower Limits:
P
CMAX_L≤P
CMAX≤P
CMAX_H(3)
Wherein,
P
CMAX_L＝min{P
EMAX_HighPowerUE– T
C,P
PowerClass–MPR–A-MPR– T
C}；
P
CMAX_H＝min{P
EMAX_HighPowerUE,P
PowerClass}；
P
eMAX_HighPowerUEthe maximum permission transmitted power that base station sends to high-power terminal, for limiting the uplink transmission power of high-power terminal.For P
eMAX_HighPowerUEbe the numerical value of which cell, have following two kinds of implementations.
Implementation one: use original P-MAX cell in 3GPPTS36.331 agreement to indicate base station to send to the maximum permission transmitted power of high-power terminal, i.e. P
eMAX_HighPowerUEthe numerical value that base station sends the cell P-Max of RRC information.
Implementation two: newly-increased cell indicates base station to send to the maximum permission transmitted power of high-power terminal, i.e. P
eMAX_HighPowerUEthe numerical value that base station sends the cell P-Max-forHighPowerUE that RRC information increases newly.Particularly, P-Max-forHighPowerUE can increase this parameter newly in SIB1 cell, also can increase this parameter newly in newly-increased cluster information block SIBTrunking.This parameter is optional cell-level parameter, if this parameter does not indicate, high-power terminal is according to the power grade determination maximum transmit power of terminal.
For above-mentioned two kinds of implementations, can determine the peak power output of high-power terminal determines to adopt which kind of implementation according to the system requirements of group system.Because the span of regulation P-Max in agreement is [-30,33], if the maximum transmit power of group system designing high-power terminal is within the scope of this, optional implementation one.Go beyond the scope if the maximum transmit power of group system designing high-power terminal is super, optional implementation two.
P
powerClassbe the peak power output of high-power cluster terminal, do not consider the various tolerance limits defined, its value can be 38dBm, also can be other values.
In LTE protocol, specify that the power of TD-LTE terminal (UE) has 4 grades.The current requirement that define only power grade 3, require that, for all TDD frequency ranges, the peak power output in channel width under any transmitted bandwidth is 23dBm, tolerance limit is ± 2dB.Due to the introducing of high-power cluster terminal, the present invention is to the requirement defining power grade 4 based on TD-LTE group system, namely require for all TDD frequency ranges, peak power output in channel width under any transmitted bandwidth is 38dBm, tolerance limit is ± 2dB, also the peak power output defining high-power cluster terminal can be needed to be other values according to system.That is, high-power cluster terminal is decided to be the terminal of power grade 4, and foregoing LTE standard power colony terminal is the terminal of power grade 3.
P
rB_MAXbe the maximum permission transmitting power of high-power cluster terminal at Resource Block (RB), base station arranges P by parameter P-RB-Max-forHighPowerUE newly-increased in newly-increased SIBTrunking
rB_MAXnumerical value.This parameter can limit the maximum transmission power of high-power cluster terminal at each RB, reasonably configures this parameter, can reduce high-power terminal further to the interference between co-frequency cell, particularly reduces the interference to LTE standard power colony terminal in adjacent area.
Sending above-mentioned parameter for realizing eNB to high-power cluster terminal, new system message type can be increased: SystemInformationBlockTypeTrunking.UE application SystemInformationBlockTypeTrunking acquisition process obtains the relevant system information of cluster.Accordingly, new Sib type (SibType) is increased in SystemInformation and SystemInformationBlockType1, i.e. SystemInformationBlockTypeTrunking, and the cluster information block of newly-increased a kind of SystemInformationBlockTypeTrunking type, i.e. SIBTrunking.
Three embodiment introductions newly-increased eNB in newly-increased SIBTrunking sends to the maximum permission transmitting power P-Max-forHighPowerUE cell of high-power cluster terminal and high-power cluster terminal in three kinds of modes of the maximum permission transmitting power P-RB-Max-forHighPowerUE cell of Resource Block (RB) below.
In addition, eNB needs the power grade knowing terminal.Because the peak power output of LTE standard power colony terminal only has 23dBm grade, be do not need to report the power grade that eNB knows UE; But due to the introducing of high-power cluster terminal, there is terminal peak power output at present and there are 2 kinds of power grades, eNB is the power grade needing to know terminal.Consider the problem reducing space interface signaling expense and terminal compatibility as far as possible, LTE standard power colony terminal is not needed to report power grade, and high-power cluster terminal increases reporting of power grade.Particularly, the power grade that ue-PowerClass parameter carrys out indicating terminal can be increased newly in UECapabilityInformation cell.This ue-PowerClass is optional parameters, 4 grades of indicating terminal power.In addition, terminal also can direct reporting terminal type, so only needs an indicating bit can realize reporting.
For UE, if high-power cluster terminal then needs to increase ue-PowerClass parameter its power grade is reported group system, if LTE standard power colony terminal then can not report power grade.
For eNB, if terminal does not report power grade, then think that power grade is the terminal of 3, namely peak power output is 23dBm; If terminal to report power grade, then know the peak power output of terminal according to numerical value concrete in ue-PowerClass.
Embodiment two:
As table 2 for SystemInformationBlockTypeTrunking comprises the relevant system information of cluster.
Table 2
In upper table, P-Max-ForHighPowerUE cell is for limiting the uplink transmission power of high-power terminal, P
eMAX_HighPowerUEbe the numerical value that base station sends to the maximum permission transmitted power P-Max-forHighPowerUE of high-power cluster terminal, according to this parameter, high-power cluster terminal can set its configuration maximum transmission power P
cMAX.
Following table 3 is SystemInformationBlockTypeTrunking territory descriptor.
Table 3
Following table 4 is P-Max-forHighPowerUE cell information.
Table 4
P-RB-Max-ForHighPowerUE cell is for limiting the transmitted power of high-power cluster terminal on each RB, and base station arranges P by P-RB-Max-forHighPowerUE
rB_MAXnumerical value, play the effect that can regulate and control high-power cluster terminal and homogeneous-frequency adjacent-domain is disturbed.Following table 5 is P-RB-Max-forHighPowerUE cell information.
Table 5
Embodiment three:
The present embodiment to be given in newly-increased SIBTrunking newly-increased base station and to send to the maximum permission transmitted power P-Max-forHighPowerUE cell of high-power terminal and high-power cluster terminal in the another kind of form embodiment of the maximum permission transmitting power P-RB-Max-forHighPowerUE cell of Resource Block (RB), as shown in table 6 below.
Table 6
P-Max-ForHighPowerUE cell is for limiting the uplink transmission power of high-power terminal, P
eMAX_HighPowerUEthe numerical value that base station sends to the maximum permission transmitted power P-Max-forHighPowerUE of high-power terminal, according to this parameter, its configuration maximum transmission power of high-power terminal profile P
cMAX.
Following table 7 is P-Max-forHighPowerUE cell descriptor.
Table 7
P-RB-Max-ForHighPowerUE cell is for limiting the transmitted power of high-power terminal on each RB, and base station arranges P by P-RB-Max-forHighPowerUE
rB_MAXnumerical value, play the effect that can regulate and control high-power terminal and homogeneous-frequency adjacent-domain is disturbed.
Following table 8 is P-RB-Max-forHighPowerUE cell descriptor.
Table 8
Embodiment four:
The present embodiment to be given in newly-increased SIBTrunking newly-increased base station and to send to the maximum permission transmitted power P-Max-forHighPowerUE parameter of high-power terminal and high-power cluster terminal in the another kind of form of the maximum permission transmitting power P-RB-Max-forHighPowerUE parameter of Resource Block (RB), as shown in table 9 below.
Table 9
Be described above the method and the specific embodiment that in the TD-LTE system of the present invention's proposition, high-power cluster terminal are realized to power control.The present invention also proposes a kind of system high-power cluster terminal being realized to power control, if Fig. 2 is the structural representation of this system, comprising:
ENB201, for sending the maximum permission transmitting power P of high-power cluster terminal at RB to high-power cluster terminal 202
rB_MAX;
High-power cluster terminal 202, for according to described P
rB_MAXand the through-put power P of other relevant parameter determination high-power cluster terminals PUSCH in subframe i
pUSCH(i).
In said system, high-power cluster terminal 202 determines P
pUSCHi the mode of () can be:
P
PUSCH(i)＝min{P
CMAX,10log
10(M
PUSCH(i))+P
RB_MAX,10log
10(M
PUSCH(i))+P
O_PUSCH(j)+α(j)·PL+Δ
TF(i)+f(i)}[dBm]
Wherein, P
cMAXfor allowing its configuration maximum transmission power of high-power cluster terminal profile;
M
pUSCH(i) resource size for PUSCH distribution for coming into force in the i-th subframe;
P
o_PUSCHj () is PUSCH power initial value;
α (j) is the cell-level parameter of high-rise configuration;
PL is downlink path loss;
Δ
tFi () is power offset;
F (i) is current PUSCH power control adjustment state parameter.
In said system, eNB201 can adopt the P-RB-Max-forHighPowerUE in newly-increased cluster information block SIBTrunking to send described P
rB_MAX.
In said system, high-power cluster terminal 202 can also be used for, and sends power grade or the terminal type of high-power cluster terminal to eNB201.
The present invention also proposes the eNB in a kind of TD-LTE system, high-power cluster terminal being realized to power control, and described high-power cluster terminal is the colony terminal being greater than the peak power output that LTE standard specifies, if Fig. 3 is the structural representation of this eNB, comprising:
Parameter sending module 301, for sending the maximum permission transmitting power P of high-power cluster terminal at RB to high-power cluster terminal
rB_MAX, for the through-put power P of high-power cluster terminal determination high-power cluster terminal PUSCH in subframe i
pUSCH(i).
Above-mentioned parameter sending module 301 can adopt the P-RB-Max-forHighPowerUE in newly-increased cluster information block SIBTrunking to send described P
rB_MAX.
Above-mentioned eNB may further include: power grade receiver module 302, for receiving power grade or the terminal type of high-power cluster terminal.
The present invention also proposes to realize in a kind of TD-LTE system the high-power cluster terminal that power controls, and described high-power cluster terminal is the colony terminal being greater than the peak power output that LTE standard specifies, as the structural representation that Fig. 4 is this high-power cluster end, comprising:
Parameter receiver module 401, for receiving the maximum permission transmitting power P of high-power cluster terminal at RB
rB_MAX;
Power control module 402, for according to described P
rB_MAXand the through-put power P of other relevant parameter determination high-power cluster terminals Physical Uplink Shared Channel PUSCH in subframe i
pUSCH(i).
Above-mentioned power control module 402 determines the through-put power P of high-power cluster terminal PUSCH in subframe i
pUSCHi the mode of () can be:
P
PUSCH(i)＝min{P
CMAX,10log
10(M
PUSCH(i))+P
RB_MAX,10log
10(M
PUSCH(i))+P
O_PUSCH(j)+α(j)·PL+Δ
TF(i)+f(i)}[dBm]
Wherein, P
cMAXfor allowing its configuration maximum transmission power of high-power cluster terminal profile;
M
pUSCH(i) resource size for PUSCH distribution for coming into force in the i-th subframe;
P
o_PUSCHj () is PUSCH power initial value;
α (j) is the cell-level parameter of high-rise configuration;
PL is downlink path loss;
Δ
tFi () is power offset;
F (i) is current PUSCH power control adjustment state parameter.
Above-mentioned high-power cluster terminal may further include: power grade reporting module 403, for reporting power grade or terminal type to eNB.
As fully visible, in the TD-LTE system that the present invention proposes, high-power cluster terminal is realized to the method, system and device of power control, the power control of the terminal of different peak power output can be had based on the support of TD-LTE group system.The present invention proposes the regulation controlled the Uplink Shared Channel power of high-power terminal, i.e. the through-put power P of high-power cluster terminal PUSCH in subframe i
pUSCHdefinition, and provide for its configuration maximum transmission power of high-power terminal profile P
cMAXrelevant parameter indicating means, and the division of terminal power grade and the method that reports.The present invention proposes the regulation of high-power cluster terminal being carried out to power control, eNB is by the maximum permission transmitting power of configuration high-power cluster terminal at Resource Block (RB), effectively can reduce high-power terminal to disturb between co-frequency cell, ensure the LTE standard power colony terminal proper communication of adjacent area, promote group system ascending performance simultaneously.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (14)
1. in TD-LTE system to a Poewr control method for high-power cluster terminal, described high-power cluster terminal is the colony terminal being greater than the peak power output that LTE standard specifies, it is characterized in that, described method comprises:
ENB sends the maximum permission transmitting power P of high-power cluster terminal at RB to high-power cluster terminal
rB_MAX;
High-power cluster terminal is according to described P
rB_MAXand the through-put power P of other relevant parameter determination high-power cluster terminals Physical Uplink Shared Channel PUSCH in subframe i
pUSCH(i).
2. method according to claim 1, is characterized in that, described high-power cluster terminal is according to described P
rB_MAXand the through-put power P of other relevant parameter determination high-power cluster terminals PUSCH in subframe i
pUSCHi the mode of () is:
P
PUSCH(i)＝min{P
CMAX,10log
10(M
PUSCH(i))+P
RB_MAX,10log
10(M
PUSCH(i))+P
O_PUSCH(j)+α(j)·PL+Δ
TF(i)+f(i)}[dBm]
Wherein, P
cMAXfor allowing its configuration maximum transmission power of high-power cluster terminal profile;
M
pUSCH(i) resource size for PUSCH distribution for coming into force in the i-th subframe;
P
o_PUSCHj () is PUSCH power initial value;
α (j) is the cell-level parameter of high-rise configuration;
PL is downlink path loss;
Δ
tFi () is power offset;
F (i) is current PUSCH power control adjustment state parameter.
3. method according to claim 1 and 2, is characterized in that, described eNB adopts the P-RB-Max-forHighPowerUE in newly-increased cluster information block SIBTrunking to send described P
rB_MAX.
4. method according to claim 1 and 2, is characterized in that, described method also comprises: high-power cluster terminal sends power grade or the terminal type of high-power cluster terminal to eNB.
5. in TD-LTE system, high-power cluster terminal is realized to a system for power control, described high-power cluster terminal is the colony terminal being greater than the peak power output that LTE standard specifies, it is characterized in that, described system comprises:
ENB, for sending the maximum permission transmitting power P of high-power cluster terminal at RB to high-power cluster terminal
rB_MAX;
High-power cluster terminal, for according to described P
rB_MAXand the through-put power P of other relevant parameter determination high-power cluster terminals Physical Uplink Shared Channel PUSCH in subframe i
pUSCH(i).
6. system according to claim 5, is characterized in that, described high-power cluster terminal is according to P
rB_MAXand the through-put power P of other relevant parameter determination high-power cluster terminals PUSCH in subframe i
pUSCHi the mode of () is:
P
PUSCH(i)＝min{P
CMAX,10log
10(M
PUSCH(i))+P
RB_MAX,10log
10(M
PUSCH(i))+P
O_PUSCH(j)+α(j)·PL+Δ
TF(i)+f(i)}[dBm]
Wherein, P
cMAXfor allowing its configuration maximum transmission power of high-power cluster terminal profile;
M
pUSCH(i) resource size for PUSCH distribution for coming into force in the i-th subframe;
P
o_PUSCHj () is PUSCH power initial value;
α (j) is the cell-level parameter of high-rise configuration;
PL is downlink path loss;
Δ
tFi () is power offset;
F (i) is current PUSCH power control adjustment state parameter.
7. the system according to claim 5 or 6, is characterized in that, described eNB adopts the P-RB-Max-forHighPowerUE in newly-increased cluster information block SIBTrunking to send described P
rB_MAX.
8. the system according to claim 5 or 6, is characterized in that, described high-power cluster terminal also for, send power grade or the terminal type of high-power cluster terminal to eNB.
9. in TD-LTE system, high-power cluster terminal is realized to an eNB for power control, described high-power cluster terminal is the colony terminal being greater than the peak power output that LTE standard specifies, it is characterized in that, described eNB comprises:
Parameter sending module, for sending the maximum permission transmitting power P of high-power cluster terminal at RB to high-power cluster terminal
rB_MAX, for the through-put power P of high-power cluster terminal determination high-power cluster terminal Physical Uplink Shared Channel PUSCH in subframe i
pUSCH(i).
10. eNB according to claim 9, is characterized in that, described parameter sending module adopts the P-RB-Max-forHighPowerUE in newly-increased cluster information block SIBTrunking to send described P
rB_MAX.
11. eNB according to claim 9 or 10, it is characterized in that, described eNB comprises further: power grade receiver module, for receiving power grade or the terminal type of high-power cluster terminal.
Realize the high-power cluster terminal that power controls in 12. 1 kinds of TD-LTE system, described high-power cluster terminal is the colony terminal being greater than the peak power output that LTE standard specifies, it is characterized in that, described high-power cluster comprises eventually:
Parameter receiver module, for receiving the maximum permission transmitting power P of high-power cluster terminal at RB
rB_MAX;
Power control module, for according to described P
rB_MAXand the through-put power P of other relevant parameter determination high-power cluster terminals Physical Uplink Shared Channel PUSCH in subframe i
pUSCH(i).
13. high-power cluster terminals according to claim 12, is characterized in that, the through-put power P of described power control module determination high-power cluster terminal PUSCH in subframe i
pUSCHi the mode of () is:
P
PUSCH(i)＝min{P
CMAX,10log
10(M
PUSCH(i))+P
RB_MAX,10log
10(M
PUSCH(i))+P
O_PUSCH(j)+α(j)·PL+Δ
TF(i)+f(i)}[dBm]
Wherein, P
cMAXfor allowing its configuration maximum transmission power of high-power cluster terminal profile;
M
pUSCH(i) resource size for PUSCH distribution for coming into force in the i-th subframe;
P
o_PUSCHj () is PUSCH power initial value;
α (j) is the cell-level parameter of high-rise configuration;
PL is downlink path loss;
Δ
tFi () is power offset;
F (i) is current PUSCH power control adjustment state parameter.
14. high-power cluster terminals according to claim 12 or 13, it is characterized in that, described high-power cluster terminal comprises further: power grade reporting module, for reporting power grade or terminal type to eNB.
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