CN102368868A - Method for optimizing physical uplink control channel power control - Google Patents
Method for optimizing physical uplink control channel power control Download PDFInfo
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- CN102368868A CN102368868A CN201110272985XA CN201110272985A CN102368868A CN 102368868 A CN102368868 A CN 102368868A CN 201110272985X A CN201110272985X A CN 201110272985XA CN 201110272985 A CN201110272985 A CN 201110272985A CN 102368868 A CN102368868 A CN 102368868A
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Abstract
The invention discloses a method for optimizing physical uplink control channel power control. In a closed loop adjusting process, only according to results of PUCCH (physical uplink control channel) 'missing detection', 'false detection' and 'correct detection', setting a transmission power control (TPC) command word is carried out, or according to the results of the PUCCH 'missing detection', 'false detection' and 'correct detection' and according to a comparison result between an SINR measured value and an object value, setting the TCP command word is carried out. In an outer loop adjusting process, setting and adjusting a plurality of parameters are combined and optimized, after being reset, a closed loop cumulant can be rapidly converged, PUCCH transmission performance is raised, PUCCH power resource utilization is optimized, and raising PDSCH (physical downlink shared channel) transmission performance is facilitated further.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly relate to a kind of method of optimizing the control of physical uplink control channel PUCCH power.
Background technology
LET (Long Term Evolution, Long Term Evolution) is third generation partner program (3GPP) standard, is the hot spot technology of present moving communicating field.During the up PUCCH of LTE transmission, be the transmission quality that guarantees PUCCH, reduce the power consumption of UE simultaneously and, need carry out power control PUCCH to the interference of adjacent area.
The PUCCH power expression of LTE is following:
P
PUCCH(i)=min{P
CMAX,P
O_PUCCH+PL+h(n
CQI,n
HARQ)+Δ
F_PUCCH(F)+g(i)}
P
CMAXThe maximum transmission power corresponding for 3GPP RAN4 definition with the terminal power grade;
P
O_OUCCHBe the expectation received power of PUCCH form 1a, it is following two parts sum: P
O_NOMINAL_PUCCH(the exclusive part in sub-district), P
O_UE_PUCCH(the exclusive part of UE) is respectively cell-level and UE level parameter;
PL is the downlink path loss that UE measures;
Wherein, PUCCH form 2/2a/2b is that benchmark carries out Δ to send broadband CQI feedback (4bit)
F_PUCCH(F) setting is when feedack exceeds 4bit (like subband CQI feedback, feed back PMI simultaneously, perhaps with the ACK/NACK combined coding etc.), with adding a side-play amount h (n in addition
CQI, n
HARQ);
PUCCH has multiple form, Δ
F_PUCCH(F) for the relevant power adjustment of PUCCH form, be defined as the power bias of every kind of PUCCH type with respect to benchmark PUCCH form (PUCCH form 1a);
Under the tdd mode,, may send the TPC command word, at this moment need all power control commands δ at a plurality of descending sub frames to same sub-frame of uplink
PUCCHAdd up, be presented as g (i).
In the prior art, carry out the closed power adjustment based on SINR, its algorithm (is labeled as algorithm 1) as follows:
Characteristics according to the PUCCH power setting can know that closed loop still can adopt tradition to measure and desired value method relatively based on SINR, and the datum target value SINR of PUCCH form 1a transmission promptly is set
Target, PUCCH, then normalization measured value and its are compared, produce the TPC command word.
Closed loop procedure:
In the current realization, the closed loop of PUCCH compares judgement based on the SINR of algorithm 1 usually, and for P
O_PUCCH, Δ
F_PUCCH(F), do not carry out the outer shroud adjustment.Because P
O_UE_PUCCHDuring parameter change, dynamic accumulative amount g (i) can reset, and like this, works as P
O_NOMINAL_PUCCH, P
O_UE_PUCCHBe provided with unreasonable and g (i) accumulation when very big, need the long period to restrain once more after the replacement, this influence the effect that power is controlled, and further influences the performance of PUCCH; When PUCCH goes up transmission ACK/NACK, more can have influence on the efficient of PDSCH transmission.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art; Solve and how to carry out the power control of PUCCH according to the transmission information of PUCCH; And the adjustment of each parameter of combined optimization and setting; To optimize the control of PUCCH power, improve the ascending power efficiency of resource, and further improve the efficiency of transmission of descending PDSCH.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method of optimizing the control of physical uplink control channel power; Comprise: in the closed loop adjustment process, only the result according to physical uplink control channel PUCCH " omission ", " flase drop " and " the correct detection " carries out the setting of through-put power control TPC command word; Perhaps according to the result of PUCCH " omission ", " flase drop " and " the correct detection ", and, carry out the setting of TPC command word according to the comparative result of SINR measured value and desired value;
Wherein " omission " be meant because PUCCH transmission quality former thereby cause eNB not detect; " flase drop " is meant that eNB detects but the demodulation mistake, and for the correct situation of demodulation, then is " the correct detection ".
Said method provided by the invention also comprises the outer shroud adjustment process, and the PUCCH power expression is following:
P
PUCCH(i)=min{P
CMAX,P
O_PUCCH+PL+h(n
CQI,n
HARQ)+Δ
F_PUCCH(F)+g(i)}
PCMAX is the maximum transmission power corresponding with the terminal power grade of 3GPP RAN4 definition;
P
O_PUCCHBe the expectation received power of PUCCH form 1a, it is following two parts sum: P
O_NOMINAL_PUCCH, P
O_UE_PUCCH, P wherein
O_NOMINAL_PUCCH, P
O_UE_PUCCHBe respectively cell-level and UE level parameter;
PL is the downlink path loss that UE measures;
Wherein, PUCCH form 2/2a/2b is fed back to benchmark and carries out Δ to send broadband CQI
F_PUCCH(F) setting, when feedack exceeds 4bit with adding a side-play amount h (n in addition
CQI, n
HARQ);
PUCCH has multiple form, Δ
F_PUCCH(F) for the relevant power adjustment of PUCCH form, be defined as the power bias of every kind of PUCCH type with respect to benchmark PUCCH form, wherein benchmark PUCCH form is PUCCH form 1a;
Under the TDD pattern, to same sub-frame of uplink, may send the TPC command word at a plurality of descending sub frames, at this moment need all power control commands δ
PUCCHAdd up, be presented as g (i);
In the outer shroud adjustment process, to three parameter P
O_UE_PUCCH, Δ
F_PUCCH(F), P
O_NOMINAL_PUCCHCarry out the combined optimization adjustment, wherein according to P
O_UE_PUCCHAdjustment amount to Δ
F_PUCCH(F) and P
O_NOMINAL_PUCCHAdjust, and certain measurement adjustment time and adjustment thresholding are set, then carry out the adjustment setting of power after satisfying condition.
By above-mentioned visible, prior art relatively, this invention has considered that the factor of PUCCH " omission " " flase drop " " the correct detection " carries out the closed power adjustment, and combined optimization P
O_UE_PUCCH, P
O_NOMINAL_PUCCH, Δ
F_PUCCH(F) parameter setting and adjustment can restrain after the closed loop cumulant is reset fast, have improved the PUCCH transmission performance, have optimized the utilization of PUCCH power resource, and have further helped improving descending PDSCH transmission performances.
Description of drawings
Fig. 1 is the block diagram of technical scheme of the present invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer, describe the present invention below in conjunction with specific embodiment.
As shown in Figure 1; The PUCCH Poewr control method that the present invention proposes comprises the closed loop adjustment process; In said closed loop adjustment process, only the result according to physical uplink control channel PUCCH " omission ", " flase drop " and " the correct detection " carries out the setting of through-put power control TPC command word; Perhaps according to the result of PUCCH " omission ", " flase drop " and " the correct detection ", and, carry out the setting of TPC command word according to the comparative result of SINR measured value and desired value;
Wherein " omission " be meant because PUCCH transmission quality former thereby cause eNB not detect; " flase drop " is meant that eNB detects but the demodulation mistake, and for the correct situation of demodulation, then is " the correct detection ".
The PUCCH Poewr control method that the present invention proposes also comprises the outer shroud adjustment process, and the PUCCH power expression is following:
P
PUCCH(i)=min{P
CMAX,P
O_PUCCH+PL+h(n
CQI,n
HARQ)+Δ
F_PUCCH(F)+g(i)}
PCMAX is the maximum transmission power corresponding with the terminal power grade of 3GPP RAN4 definition;
P
O_PUCCHBe the expectation received power of PUCCH form 1a, it is following two parts sum: P
O_NOMINAL_PUCCH, P
O_UE_PUCCH, P wherein
O_NOMINAL_PUCCH, P
O_UE_PUCCHBe respectively cell-level and UE level parameter;
PL is the downlink path loss that UE measures;
Wherein, PUCCH form 2/2a/2b is fed back to benchmark and carries out Δ to send broadband CQI
F_PUCCH(F) setting, when feedack exceeds 4bit with adding a side-play amount h (n in addition
CQI, n
HARQ);
PUCCH has multiple form, Δ
F_PUCCH(F) for the relevant power adjustment of PUCCH form, be defined as the power bias of every kind of PUCCH type with respect to benchmark PUCCH form, wherein benchmark PUCCH form is PUCCH form 1a;
Under the TDD pattern, to same sub-frame of uplink, may send the TPC command word at a plurality of descending sub frames, at this moment need all power control commands δ
PUCCHAdd up, be presented as g (i);
In the outer shroud adjustment process, to three parameter P
O_UE_PUCCH, Δ
F_PUCCH(F), P
O_NOMINAL_PUCCHCarry out the combined optimization adjustment, wherein according to P
O_UE_PUCCHAdjustment amount to Δ
F_PUCCH(F) and P
O_NOMINAL_PUCCHAdjust, and certain measurement adjustment time and adjustment thresholding are set, then carry out the adjustment setting of power after satisfying condition.
Its specific embodiments is following:
One, closed power adjustment
Algorithm 2: reach " flase drop " based on " omission "
When eNB can not receive PUCCH ACK/NACK, two kinds of situation are arranged: a kind of UE of being receives the PUCCH A/N poor quality who launches behind the PDCCH, causes eNB not detect or faults; Do not detect PDCCH or detect the PDCCH decoding error but another kind is UE, at this moment UE does not receive PDSCH and does not feed back PUCCHA/N information yet, causes eNB can't receive PUCCH.
The influence of two kinds of situation is different: for the 1st kind of situation, need in TPC command word subsequently, raise the PUCCH transmitting power and guarantee the PUCCH quality of reception; For the 2nd kind of situation, do not have obvious relation with the PUCCH transmitting power, but, advise it and handle with the 1st kind of situation because eNB can't judge the detection case of UE to PDCCH.
Further consider, PUCCH A/N poor quality and cause eNB not detect, this situation is " omission ", explains that at this moment transmitting power is too small, needs big step-length to improve transmitting power; And eNB detects PUCCH but the demodulation mistake, and this then is " flase drop ", at this moment only needs less step-length to improve transmitting power; And for the correct situation of demodulation, then be " just examining ", at this moment can less step-length reduce transmitting power.
And for PUCCH transmission periodicity channel condition information (CSI), UE always carries out data and sends, and is same, and eNB can carry out corresponding power adjustment according to " omission " " flase drop " reception condition that detects.
Closed loop procedure:
Δ wherein
LargeUp>=Δ
SmallUp
For DCI (Downlink Control Information, down link control information) form 1/1A/1B/1D/2/2A/2B/3, suggestion:
Δ
LargeUp=3dB;
And, then advise Δ for DCI form 3A
LargeUp=Δ
SmallUp=1dB, Δ
StepDown=-0.01dB.
Because TPC command word δ
PUCCHOnly can represent the power adjustment of integral multiple, for Δ
StepDown=-0.01dB, the not enough 1dB of adjustment step-length needs to carry out power decreasing again after a plurality of step-lengths of accumulation equally.
Algorithm 3: combined optimization
Combined optimization; Promptly consider algorithm 1 and algorithm 2 simultaneously, also promptly according to the result of PUCCH " omission ", " flase drop " and " correct detection ", and according to the comparative result of SINR measured value and desired value; Carry out the setting of TPC command word, concrete realization can have dual mode:
Option 1: algorithm 1 and algorithm 2 independent judgment separately; Get both bigger adjustment step values then as the conclusive judgement value; Specific as follows: the comparative result according to SINR measured value and desired value is provided with the first adjustment step value; Result according to PUCCH " omission ", " flase drop " and " correctly detecting " is provided with the second adjustment step value, gets the final adjustment of higher value conduct step value, i.e. Δ δ in the first adjustment step value and the second adjustment step value
PUCCH=MAX (Δ δ
PUCCH, algorithm 1, Δ δ
PUCCH, algorithm 2);
Option 2: on the basis of algorithm 1 adjustment; Revise according to algorithm 2; The conclusive judgement value is both adjustment amount sums, and is specific as follows: according to the comparative result of SINR measured value and desired value the first adjustment step value is set, is provided with second according to the result of PUCCH " omission ", " flase drop " and " the correct detection " and adjusts step value; Get the first adjustment step value and the second adjustment step value and as final adjustment step value, i.e. Δ δ
PUCCH=Δ δ
PUCCH, algorithm 1+ Δ δ
PUCCH, algorithm 2
Concrete calculating repeated no more.
Two, exterior ring power adjustment
Because the effective range of parameter is different, so the mode of outer ring statistics adjustment is also different:
P
O_NOMINAL_PUCCH: the cell-level parameter, the adjustment result who adds up all UE adjusts;
P
O_UE_PUCCH: UE level parameter, add up the PUCCH transmission of this UE demand form and adjust;
Δ
F_PUCCH(F): PUCCH form level parameter, add up the transmission of the identical PUCCH form of this UE and adjust.
P
O_UE_PUCCHThe adjustment mode:
Initial value is provided with: P
O_UE_PUCCHInitial value is made as 0.
Updating value is calculated:
Measure measurement period at each, according to the accumulation Δ SINR that upgrades
PUCCHValue is calculated the P that upgrades
O_UE_PUCCHWherein, Δ SINR
PUCCHBe outer shroud adjustment SINR
Target, PUCCHAdjustment amount, adopt the method for fixed window or movable window statistics BLER, repeat no more.
Sample as for statistics is selected, and eNB can know and knows PUSCH, the delivery time of PUCCH CSI, the PUCCH A/N relevant with PDSCH etc. periodically, can't foresee the delivery time of PUCCH SR; Add up PUCCH form 1 in the time of to get rid of single-shot SR so outer shroud is measured, but when SR+ACK/NACK was concurrent, A/N sent on the SR resource, at this moment need add up interior.
During realization, two kinds of numerical statistic scopes can be arranged:
The interval of simple dynamic dispatching is unfixing, only adds up form 1a, and effect maybe be relatively poor; And combine measurement period property CSI feedback, can improve tracking, so Option 2 is adopted in suggestion to channel.
P after the quantification
O_UE_PUCCHSpan be [8,7], according to not quantizing P
O_UE_PUCCHValue, choose immediate value in above-mentioned 16 values.As non-quantized twice P
O_UE_PUCCHValue differs not enough threshold value Δ P
O_UE_PUCCH, thr, promptly
The time, do not carry out P
O_UE_PUCCHAdjustment; Otherwise, then carry out P
O_UE_PUCCHRenewal, through the RRC implementing signalling.
Δ P
O_UE_PUCCH, thrThe speed that value need be considered the expense of RRC signaling reprovision and the back power control of resetting restrains once more: Δ P
O_UE_PUCCH, thrBig more, signaling consumption is approximately little, but cumulant is bigger, and the convergence rate after the replacement is longer; Otherwise, Δ P
O_UE_PUCCH, thrMore little, then signaling consumption is big more, but cumulant is less, and the convergence rate after the replacement is very fast.
P
O_UE_PUCCHUpdate cycle T
O_UE_PUCCH, be SINR
Target, PUCCHUpdate cycle T
BLERIntegral multiple.At P
O_UE_PUCCHUpdated time is carried out according to last joint earlier
Update calculation, and then calculate P
O_UE_PUCCHUpdating value.
P
O_NOMINAL_PUCCHThe adjustment mode:
Initial value is provided with:
P
O_NOMINAL_PUCCHInitial value is made as SINR
Target, PUCCH, ini+ IN
Null(dBm).SINR wherein
Target, PUCCH, iniFor the corresponding SINR value of PUCCH form 1a under target BLER, obtain through link simulation; IN
NullNetwork measure obtains during for the sub-district zero load interference and noise value.
Annotate: to PUCCH, IN
NullOnly add up PUCCH PRB (Physical Resource Block, Physical Resource Block) part, need carry out the time-frequency two-dimensional recursive average computation equally.
Updating value is calculated:
Add up the P of each UE
O_UE_PUCCHParameter reaches the number in the span lower bound and the upper bound respectively, is labeled as N
UE, LL, N
UE, HL
Work as N
UE, LL, N
UE, HLBe not 0 o'clock simultaneously, if
Perhaps
The time, then upgrade Δ P
O_NOMINAL_PUCCH=10lg (R
UE, thd), wherein, R
UE, thdBe positive integer, suggestion value 2-4.
Work as N
UE, LL, N
UE, HLIn any is 0 o'clock, surpass if the UE number that reaches the span lower bound accounts for total UE ratio
Δ P then
O_NOMINAL_PUCCH=-10lg (R
UE, thd), perhaps
Accounting for total UE number ratio as if the UE number that reaches the span upper bound surpasses
Δ P then
O_NOMINAL_PUCCH=10lg (R
UE, thd), perhaps
Simultaneously each UE is upgraded P
O_UE_PUCCH=P
O_UE_PUCCH-Δ P
O_NOMINAL_PUCCH
P
O_NOMINAL_PUCCHSpan be [127 ,-96] dbm because the PRB occupied bandwidth of PUCCH is less, it selects fading characteristic more relevant frequently, N occurs
UE, LL, N
UE, HLSimultaneously be not that 0 probability is lower.
P
O_NOMINAL_PUCCHUpdate cycle T
O_NOMINAL_PUCCH, be P
O_UE_PUCCHUpdate cycle T
O_UE_PUCCHIntegral multiple; At P
O_NOMINAL_PUCCHUpdated time is carried out P according to last joint earlier
O_UE_PUCCHUpdate calculation, and then calculate P
O_NOMINAL_PUCCHAnd P
O_UE_PUCCHUpgrade, thereby obtain final P
O_UE_PUCCHUpdating value.
Δ
F_PUCCHThe adjustment mode:
Δ
F_PUCCH(F) be presented as the side-play amount of PUCCH different transpost formats with respect to form 1a, so the adjustment of its outer shroud also should be based on adding up with a kind of transformat:
For PUCCH form 1:
For the SR transmission, the same A/N of its transmission plan gets final product but only need satisfy activation detection (i.e. the detection of " omission "), does not need further to judge and corrects errors.
The SR resource is a UE level cycle reserved resource, whether sends service buffer situation and synchronous regime that SR depends on UE, and eNB can't foresee the transmission of SR.
Suggestion:
For PUCCH form 1b:
Initial value is provided with:
Updating value is calculated:
Each measures statistic period T
BLERIn, calculate the BLER of PUCCH form 1b, and obtain accumulating adjustment amount
Δ SINR wherein
PUCCH, 1bOuter shroud adjustment amount for the target SINR of PUCCH form 1b transmission;
Δ
F_PUCCH(1b) span is [1,3,5] dB, is spaced apart 2dB.
Equally, according to not quantizing Δ
F_PUCCHValue (1b) is chosen immediate value in above-mentioned 3 values, when non-quantized twice Δ
F_PUCCHWhen (1b) value differs not enough 2dB, do not carry out Δ
F_PUCCHAdjustment (1b); Otherwise, then carry out Δ
F_PUCCHRenewal (1b) is through the RRC implementing signalling.
Δ
F_PUCCHSame P of update cycle (1b)
O_UE_PUCCH, be SINR
Target, PUCCHUpdate cycle T
BLERIntegral multiple.At P
O_UE_PUCCHUpdated time is carried out P earlier
O_UE_PUCCHUpdate calculation, and then calculate Δ
F_PUCCHRenewal (1b).
For PUCCH form 2:
Initial value is provided with:
Updating value is calculated:
Each measures statistic period T
BLERIn, calculate the BLER of PUCCH form 2, and obtain accumulating adjustment amount
Δ SINR wherein
PUCCH, 2Outer shroud adjustment amount for the target SINR of PUCCH form 2 transmission;
Δ after the quantification
F_PUCCH(2) span is [2,0,1,2] dB.
Equally, according to not quantizing Δ
F_PUCCH(2) value is chosen immediate value in above-mentioned 4 values, when non-quantized twice Δ
F_PUCCHWhen (2) value differs not enough 1dB, do not carry out Δ
F_PUCCH(2) adjustment; Otherwise, then carry out Δ
F_PUCCH(2) renewal is through the RRC implementing signalling.
Δ
F_PUCCH(2) same P of update cycle
O_UE_PUCCH, be SINR
Target, PUCCHUpdate cycle T
BLERIntegral multiple.At P
O_UE_PUCCHUpdated time is carried out P earlier
O_UE_PUCCHUpdate calculation, and then calculate Δ
F_PUCCH(2) renewal.
For PUCCH form 2a:
Initial value is provided with:
Updating value is calculated:
Each measures statistic period T
BLERIn, calculate the BLER of PUCCH form 2a, and obtain accumulating adjustment amount
Δ SINR wherein
PUCCH, 2aOuter shroud adjustment amount for the target SINR of PUCCH form 2a transmission;
Δ
F_PUCCH(2a)=Δ
F_PUCCH(2a)
ini+ΔΔ
F_PUCCH(2a);
Δ after the quantification
F_PUCCH(2a) span is [2,0,2] dB.
Equally, according to not quantizing Δ
F_PUCCHValue (2a) is chosen immediate value in above-mentioned 3 values, when non-quantized twice Δ
F_PUCCHWhen (2a) value differs not enough 2dB, do not carry out Δ
F_PUCCHAdjustment (2a); Otherwise, then carry out Δ
F_PUCCHRenewal (2a) is through the RRC implementing signalling.
Δ
F_PUCCHSame P of update cycle (2a)
O_UE_PUCCH, be SINR
Target, PUCCHUpdate cycle T
BLERIntegral multiple.At P
O_UE_PUCCHUpdated time is carried out P earlier
O_UE_PUCCHUpdate calculation, and then calculate Δ
F_PUCCHRenewal (2a).
For PUCCH form 2b:
Initial value is provided with:
Updating value is calculated:
Each measures statistic period T
BLERIn, calculate the BLER of PUCCH form 2b, and obtain accumulating adjustment amount
Δ SINR wherein
PUCCH, 2bOuter shroud adjustment amount for the target SINR of PUCCH form 2b transmission;
Δ after the quantification
F_PUCCH(2b) span is [2,0,2] dB.
Equally, according to not quantizing Δ
F_PUCCHValue (2b) is chosen immediate value in above-mentioned 3 values, when non-quantized twice Δ
F_PUCCHWhen (2b) value differs not enough 2dB, do not carry out Δ
F_PUCCHAdjustment (2b); Otherwise, then carry out Δ
F_PUCCHRenewal (2b) is through the RRC implementing signalling.
Δ
F_PUCCHSame P of update cycle (2b)
O_UE_PUCCH, be SINR
Target, PUCCHUpdate cycle T
BLERIntegral multiple.At P
O_UE_PUCCHUpdated time is carried out P earlier
O_UE_PUCCHUpdate calculation, and then calculate Δ
F_PUCCHRenewal (2b).
This shows, relative prior art, the present invention has considered that the factor of PUCCH " omission " " flase drop " " the correct detection " carries out the closed power adjustment, and combined optimization P
O_UE_PUCCH, P
O_NOMINAL_PUCCH, Δ
F_PUCCH(F) parameter setting and adjustment can restrain after the closed loop cumulant is reset fast, have improved the PUCCH transmission performance, have optimized the utilization of PUCCH power resource, and have further helped improving descending PDSCH transmission performances.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (10)
1. optimize the method that physical uplink control channel power is controlled for one kind; It is characterized in that: in the closed loop adjustment process, only the result according to physical uplink control channel PUCCH " omission ", " flase drop " and " the correct detection " carries out the setting of through-put power control TPC command word; Perhaps according to the result of PUCCH " omission ", " flase drop " and " the correct detection ", and, carry out the setting of TPC command word according to the comparative result of SINR measured value and desired value;
Wherein " omission " be meant because PUCCH transmission quality former thereby cause eNB not detect; " flase drop " is meant that eNB detects but the demodulation mistake, and for the correct situation of demodulation, then is " the correct detection ".
2. the method for claim 1 is characterized in that, " omission " is provided with power raises step delta
LargeUp, " flase drop " is provided with power raises step delta
SmallUp, " the correct detection " is provided with the downward modulation step delta
StepDown, Δ wherein
LargeUp>=Δ
SmallUp
3. method as claimed in claim 2 is characterized in that:
For down link control information DCI form 1/1A/1B/1D/2/2A/2B/3, Δ
LargeUp=3dB, Δ
SmallUp=1dB, Δ
StepDown=-0.01dB;
For DCI form 3A, then Δ
LargeUp=Δ
SmallUp=1dB, Δ
StepDown=-0.01dB.
4. according to claim 1 or claim 2 method; It is characterized in that; Said result according to PUCCH " omission ", " flase drop " and " the correct detection ", and according to the comparative result of SINR measured value and desired value, the setting of carrying out the TPC command word may further comprise the steps:
(1) comparative result according to SINR measured value and desired value is provided with the first adjustment step value;
(2) result according to PUCCH " omission ", " flase drop " and " the correct detection " is provided with the second adjustment step value;
Step value is finally adjusted in the higher value conduct of (3) getting in the first adjustment step value and the second adjustment step value; Or get the first adjustment step value and the second adjustment step value and as final adjustment step value.
5. the method for claim 1 is characterized in that also comprising the outer shroud adjustment process, and the PUCCH power expression is following:
P
PUCCH(i)=min{P
CMAX,P
O_PUCCH+PL+h(n
CQI,n
HARQ)+Δ
F_PUCCH(F)+g(i)}
PCMAX is the maximum transmission power corresponding with the terminal power grade of 3GPP RAN4 definition;
P
O_PUCCHBe the expectation received power of PUCCH form 1a, it is following two parts sum: P
O_NOMINAL_PUCCH, P
O_UE_PUCCH, P wherein
O_NOMINAL_PUCCH, P
O_UE_PUCCHBe respectively cell-level and UE level parameter;
PL is the downlink path loss that UE measures;
Wherein, PUCCH form 2/2a/2b is fed back to benchmark and carries out Δ to send broadband CQI
F_PUCCH(F) setting, when feedack exceeds 4bit with adding a side-play amount h (n in addition
CQI, n
HARQ);
PUCCH has multiple form, Δ
F_PUCCH(F) for the relevant power adjustment of PUCCH form, be defined as the power bias of every kind of PUCCH type with respect to benchmark PUCCH form, wherein benchmark PUCCH form is PUCCH form 1a;
Under the TDD pattern, to same sub-frame of uplink, may send the TPC command word at a plurality of descending sub frames, at this moment need all power control commands δ
PUCCHAdd up, be presented as g (i);
In the outer shroud adjustment process, to three parameter P
O_UE_PUCCH, Δ
F_PUCCH(F), P
O_NOMINAL_PUCCHCarry out the combined optimization adjustment, wherein according to P
O_UE_PUCCHAdjustment amount to Δ
F_PUCCH(F) and P
O_NOMINAL_PUCCHAdjust, and certain measurement adjustment time and adjustment thresholding are set, then carry out the adjustment setting of power after satisfying condition.
6. method as claimed in claim 5 is characterized in that: to parameter P
O_UE_PUCCHThe adjustment mode following:
Initial value is provided with: P
O_UE_PUCCHInitial value is made as 0;
Updating value is calculated:
Measure measurement period at each, according to the accumulation Δ SINR that upgrades
PUCCHValue is calculated the P that upgrades
O_UE_PUCCHWherein, Δ SINR
PUCCHBe outer shroud adjustment SINR
Target, PUCCHAdjustment amount, SINR
Target, PUCCHPairing target SINR when transmitting for benchmark PUCCH form.
7. method as claimed in claim 6 is characterized in that:
As non-quantized twice P
O_UE_PUCCHWhen value differs less than threshold value, do not carry out P
O_UE_PUCCHAdjustment; Otherwise, then carry out P
O_UE_PUCCHRenewal.
8. like claim 5 or 6 described methods, it is characterized in that: parameter P
O_NOMINAL_PUCCHThe adjustment mode following:
Initial value is provided with:
P
O_NOMINAL_PUCCHInitial value is made as SINR
Target, PUCCH, ini+ IN
Null(dBm), SINR wherein
Target, PUCCH, iniBe the corresponding SINR value of PUCCH form 1a under target BLER, IN
NullNetwork measure obtains during for the sub-district zero load interference and noise value;
Updating value is calculated:
Add up the P of each UE
O_UE_PUCCHParameter reaches the number in the span lower bound and the upper bound respectively, is labeled as N
UE, LL, N
UE, HL
Work as N
UE, LL, N
UE, HLBe not 0 o'clock simultaneously, if
Perhaps
The time, then upgrade Δ P
O_NOMINAL_PUCCH=10lg (R
UE, thd), wherein, R
UE, thdBe positive integer;
Work as N
UE, LL, N
UE, HLBe 0 o'clock simultaneously, do not carry out P
O_NOMINAL_PUCCHUpgrade;
Work as N
UE, LL, N
UE, HLIn any is 0 o'clock, surpass if the UE number that reaches the span lower bound accounts for total UE ratio
Δ P then
O_NOMINAL_PUCCH=-10lg (R
UE, thd), perhaps
Accounting for total UE number ratio as if the UE number that reaches the span upper bound surpasses
Δ P then
O_NOMINAL_PUCCH=10lg (R
UE, htd), perhaps
P after the renewal
O_NOMINAL_PUCCH=P
O_NOMINAL_PUCCH+ Δ P
O_NOMINAL_PUCCH
Simultaneously each UE is upgraded P
O_UE_PUCCH=P
O_UE_PUCCH-Δ P
O_NOMINAL_PUCCH
9. method as claimed in claim 8 is characterized in that: R
UE, thdSpan be 2-4.
10. like claim 5 or 6 described methods, it is characterized in that: the parameter Δ
F_PUCCHThe adjustment mode following:
For PUCCH form 1: Δ
F_PUCCH(1)=0dB;
For PUCCH form 1b:
Initial value is provided with:
Δ
F_PUCCH(1b)
ini=3dB;
Updating value is calculated:
Each is measured in the measurement period, calculates the BLER of PUCCH form 1b, and obtains accumulating adjustment amount
Δ SINR wherein
PUCCH, 1bOuter shroud adjustment amount for the target SINR of PUCCH form 1b transmission;
Δ
F_PUCCH(1b)=Δ
F_PUCCH(1b)
ini+ΔΔ
F_PUCCH(1b);
For PUCCH form 2:
Initial value is provided with:
Δ
F_PUCCH(2)
ini=1dB;
Updating value is calculated:
Each measures statistic period T
BLERIn, calculate the BLER of PUCCH form 2, and obtain accumulating adjustment amount
Δ SINR wherein
PUCCH, 2Outer shroud adjustment amount for the target SINR of PUCCH form 2 transmission;
Δ
F_PUCCH(2)=Δ
F_PUCCH(2)
ini+ΔΔ
F_PUCCH(2);
For PUCCH form 2a:
Initial value is provided with:
Δ
F_PUCCH(2a)
ini=2dB;
Updating value is calculated:
Each measures statistic period T
BLERIn, calculate the BLER of PUCCH form 2a, and obtain accumulating adjustment amount
Δ SINR wherein
PUCCH, 2aOuter shroud adjustment amount for the target SINR of PUCCH form 2a transmission;
Δ
F_PUCCH(2a)=Δ
F_PUCCH(2a)
ini+ΔΔ
F_PUCCH(2a);
For PUCCH form 2b:
Initial value is provided with:
Δ
F_PUCCH(2b)
ini=2dB;
Updating value is calculated:
Each measures statistic period T
BLERIn, calculate the BLER of PUCCH form 2b, and obtain accumulating adjustment amount
Δ SINR wherein
PUCCH, 2bOuter shroud adjustment amount for the target SINR of PUCCH form 2b transmission;
Δ
F_PUCCH(2b)=Δ
F_PUCCH(2b)
ini+ΔΔ
F_PUCCH(2b)。
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CN104219752A (en) * | 2014-09-09 | 2014-12-17 | 京信通信系统(中国)有限公司 | Power control method and system for multi-user multiplexing of special channel links |
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CN102905357A (en) * | 2012-09-27 | 2013-01-30 | 大唐移动通信设备有限公司 | Power control method and device of physical uplink control channel |
CN102905357B (en) * | 2012-09-27 | 2015-06-03 | 大唐移动通信设备有限公司 | Power control method and device of physical uplink control channel |
CN104039000A (en) * | 2013-03-07 | 2014-09-10 | 中兴通讯股份有限公司 | Power adjusting methods and base station |
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CN104219752A (en) * | 2014-09-09 | 2014-12-17 | 京信通信系统(中国)有限公司 | Power control method and system for multi-user multiplexing of special channel links |
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CN111818661A (en) * | 2020-07-24 | 2020-10-23 | 成都爱瑞无线科技有限公司 | Optimization algorithm for PUCCH SINR estimation |
CN111818661B (en) * | 2020-07-24 | 2022-09-20 | 成都爱瑞无线科技有限公司 | Optimization method for PUCCH SINR estimation |
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