CN104735766B - The Poewr control method and device of fractional dedicated physical channel - Google Patents
The Poewr control method and device of fractional dedicated physical channel Download PDFInfo
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- CN104735766B CN104735766B CN201310717780.7A CN201310717780A CN104735766B CN 104735766 B CN104735766 B CN 104735766B CN 201310717780 A CN201310717780 A CN 201310717780A CN 104735766 B CN104735766 B CN 104735766B
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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
- H04W52/06—TPC algorithms
- H04W52/12—Outer and inner loops
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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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
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Abstract
The present invention relates to the communications fields, disclose the Poewr control method and device of a kind of fractional dedicated physical channel.In the present invention, the resulting CER target value of the inconsistent method statistic of external circule power control bit in the Poewr control method of fractional dedicated physical channel is asserted by mapping relations with reference to CER target value, so that the inconsistent method of bit used in scheme is consistent with the statistical result of hard decision method as defined in agreement at present, and the sir measurement value in inner-loop power control is smoothed and polynomial calibration, so that the Poewr control method of fractional dedicated physical channel is more accurate.
Description
Technical field
The present invention relates to the communications fields, the in particular to Poewr control method and device of fractional dedicated physical channel.
Background technique
WCDMA(wideband code division multiple access, Wideband Code Division Multiple Access) F- in system
DPCH(fractional dedicated physical channel, Fractional Dedicated Physical Channel) power control techniques, it is main
It is related to open sea wharf technology and sir measurement technology therein.
Power control is a key technology of cdma system.For CDMA Cellular System, all users in same cell
Using identical frequency range and time slot, (standard) orthogonal property between user only by spreading code is mutually isolated.However, due to wireless communication
The reasons such as multipath, the delay in road make the cross correlation between each subscriber signal undesirable, and the signal of other users is to current
Subscriber signal generates interference, and this kind of interference is referred to as multi-access inference.When the increase of user's number or other user powers in cell
The interference to active user can all be increased when promotion, the received signal quality of active user is caused to decline, when this kind of interference is arrived greatly
When to a certain degree, active user cannot normal communication.Therefore cdma system is a serious interference limiting system, interference
Size directly influence power system capacity.Power control techniques can be with effective solution this problem, it can adjust each user
Transmission power, compensation channel fading, offset near-far interference, so that each user is maintained the minimum standard for being able to maintain normal communication
On, the interference to other users thus can be maximally reduced, to improve power system capacity.
WCDMA system uses close-loop power control, including inner-loop power control and open sea wharf two parts more at present,
As shown in Figure 1.Wherein, inner-loop power control is according to the difference of sir measurement value and sir target value request transmitting terminal adjustment transmitting function
(when sir measurement value is less than or equal to sir target value, TPC sends UP command " 1 " to rate；Otherwise TPC sends down command " 0 ")；
Open sea wharf is based on type of service and CRC check result or the bit error rate/Block Error Rate (BER/BLER) adjusts and can guarantee QoS
Sir target value.
For F-DPCH channel, close-loop power control structure is similar.But since F-DPCH channel does not have channel coding
And CRC check, therefore the aimed quality of agreement clear stipulaties its external circule power controls is the CER(order error rate of TPC command,
Command Error Rate).F-DPCH channel is mainly used for the control information (TPC) of bearing bed 1, and frame structure is as shown in Figure 2.
Each length is that the radio frames of 10ms are divided into 15 time slots, each slot length 2560chip, TPC bit number in each time slot
It is 2, the mapping relations of the two TPC bits and TPC command are as shown in table 1 below:
The mapping relations of table 1TPC bit and TPC command
F-DPCH channel adjusts sir target value by comparing the error rate CER and target CER of TPC command；Then basis
Sir measurement value generates TPC command compared with sir target value.
CER counts the thought based on the inconsistent method of bit at present: TPC bit value may be unknown when receiving, but
It is all TPC bits value having the same received in same time slot, so whether unanimously can be with according to the bit received
Then the error rate of rough statistics CER calculates initial TPC command error rate CER according to formula (1)；
Sir measurement is based on same thought at present: TPC bit value may be unknown when receiving, but in same a period of time
All TPC bits value having the same that gap receives.Therefore, by the way that same phase (I) to be added with orthogonal (Q) component, signal section
Relevant addition can be carried out by dividing, and noise section carries out non-coherent additions, allowed for noise in this way and reduced and extract signal power；
By subtracting each other I and Q component, signal section just cancels out each other and leaves noise section.Assuming that i-th time slot TPC command is soft
Bit demodulation result is TPCi, then the sir measurement value of i-th of time slot are as follows:
Wherein, TPCI,iFor TPCiI component, TPCQ,iFor TPCiQ component.
On the other hand, the statistical method of CER target value as defined in agreement is hard decision statistical method: according to TPC command
The statistics that result carries out CER is sentenced firmly.Assuming that NOLPC_T TPC command " 1 " is had sent in the outer ring period, then the TPC life of mistake
Number is enabled to be counted according to formula (2):
Then TPC command error rate is calculated according to formula (1).
Obviously, the statistical method is different with current CER statistical method, then can not just converge to association using this method CER
CER target value as defined in discussing；In addition, when declining serious, sir measurement value is inaccurate due to only one TPC command of every time slot
Really；Meanwhile for scheme when low signal-to-noise ratio, sir measurement value is higher at present.
Summary of the invention
The purpose of the present invention is to provide a kind of Poewr control method of fractional dedicated physical channel and devices, so that part
The Poewr control method of dedicated physical channel is more accurate.
In order to solve the above technical problems, the present invention provides a kind of Poewr control method of fractional dedicated physical channel, packet
Containing following steps:
Terminal adjusts signal interference ratio by comparing the error rate CER of transmitting power control TPC command and with reference to CER target value
Sir target value；It wherein, is to pass through the resulting order error rate CER target value of the inconsistent method statistic of bit with reference to CER target value
Gained is mapped through mapping relations, mapping relations first pass through the resulting CER target value of hard-decision method statistics in advance and bit is inconsistent
The resulting CER target value of method statistic emulates acquisition in identical SIR；
The size for comparing sir target value and sir measurement value generates TPC command.
The present invention also provides a kind of power control devices of fractional dedicated physical channel, include:
Sir target value adjusts module, for the error rate CER by comparing transmitting power control TPC command and refers to CER
Target value adjusts signal interference ratio sir target value；It wherein, is to pass through the resulting life of the inconsistent method statistic of bit with reference to CER target value
Error rate CER target value is enabled to confirm gained through mapping relations, mapping relations first pass through hard-decision method in advance and count resulting CER mesh
Scale value and the resulting CER target value of the inconsistent method statistic of bit emulate acquisition in identical SIR；
TPC command generation module, for comparing sir target value adjustment module sir target value adjusted and sir measurement value
Size generate TPC command.
In terms of existing technologies, the main distinction is embodiment of the present invention: utilizing hard-decision method statistics gained
CER target value and the inconsistent method statistic of bit obtained by mapping relations between CER target value, by the latter used in current scheme
The resulting CER target value of method statistic is mapped to the reference CER target value that former approach counts by the mapping relations,
Exactly allow the resulting CER target value of current scheme to converge to CER target value as defined in agreement, so also can so that
The Poewr control method of fractional dedicated physical channel is more accurate.
As a further improvement, mapping relations are obtained by following sub-step:
A. transmitting terminal sends known training sequence；
B. it in identical SIR, is utilized respectively hard-decision method and the inconsistent method of bit calculates CER target value；
C. above-mentioned two CER target value is corresponding；
The size for adjusting SIR, repeats step A to C, obtains the mapping relations of one group of CER target value.
It further limits hard-decision method and counts CER mesh obtained by resulting CER target value and the inconsistent method statistic of bit
Scale value method for confirming mapping relation between is to use CER target obtained by different calculation methods by comparing to known training sequence
The size of value confirms.So that identified mapping relations are more accurate, that is, connect the reference CER target value obtained more
CER target value as defined in nearly agreement, further such that the Poewr control method of fractional dedicated physical channel is more accurate.
As a further improvement, generating TPC command in the size of the sir target value and sir measurement value
Include following sub-step in step:
The sir measurement value is calibrated using multinomial, the sir measurement value after being calibrated；
The size of sir measurement value after comparing the sir target value and the calibration generates TPC command.
So that sir measurement value is more accurate, especially in low signal-to-noise ratio, sir measurement value is more accurate, further increases portion
Divide the inner loop power control method precision of dedicated physical channel.
As a further improvement, in the step of size of relatively sir target value and sir measurement value generates TPC command, packet
Containing following sub-step:
It is averaged to the noise of N number of time slot, wherein N is the natural number greater than 1；
Sir measurement value using the noise calculation sir measurement value after being averaged, after obtaining noise averagely；
The sir measurement value is calibrated using multinomial described, the step of sir measurement value after being calibrated
In, sir measurement value of the noise after average is calibrated using multinomial, the sir measurement value after obtaining the calibration.
The sir measurement value of smoothed processing and polynomial calibration is more accurate, especially when declining serious, sir measurement
It is worth more acurrate, further increases the inner loop power control method precision of fractional dedicated physical channel.
As a further improvement, in the step of size of relatively sir target value and sir measurement value generates TPC command, packet
Containing following sub-step:
It is averaged to the noise of N number of time slot, wherein N is the natural number greater than 1；
Sir measurement value using the noise calculation sir measurement value after being averaged, after obtaining noise averagely；
The size of sir measurement value after comparing the sir target value and the noise averagely generates TPC command.
Smoothed out sir measurement value is more accurate, and especially when declining serious, sir measurement value is more acurrate, further mentions
The inner loop power control method precision of high part dedicated physical channel.
Detailed description of the invention
Fig. 1 is according to close-loop power control schematic diagram in the prior art；
Fig. 2 is according to F-DPCH channel frame structure in the prior art；
Fig. 3 is the outer-loop power controlling method process of the fractional dedicated physical channel of first embodiment according to the present invention
Figure；
Fig. 4 is the inner loop power control method process of the fractional dedicated physical channel of first embodiment according to the present invention
Figure；
Fig. 5 is the inner loop power control method process of the fractional dedicated physical channel of second embodiment according to the present invention
Figure；
Fig. 6 is the inner loop power control method process of the fractional dedicated physical channel of third embodiment according to the present invention
Figure；
Fig. 7 is the structural representation of the power control device of the fractional dedicated physical channel of the 4th embodiment according to the present invention
Figure；
Fig. 8 is the structural representation of the power control device of the fractional dedicated physical channel of the 5th embodiment according to the present invention
Figure；
Fig. 9 is the structural representation of the power control device of the fractional dedicated physical channel of sixth embodiment according to the present invention
Figure.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to each reality of the invention
The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the present invention,
In order to make the reader understand this application better, many technical details are proposed.But even if without these technical details and base
In the various changes and modifications of following embodiment, each claim of the application technical side claimed also may be implemented
Case.
The first embodiment of the present invention is related to the Poewr control methods of fractional dedicated physical channel a kind of, include outer ring
Poewr control method (referred to as " external circule power control ") and inner loop power control method (referred to as " inner-loop power control "), Outer Loop Power control
Method processed is as shown in figure 3, specific steps are as follows:
Step 301, CER measured value is counted, step 302 is then executed.Namely count the mistake of transimission power TPC command
Rate CER.
Step 302, CER target value is mapped as with reference to CER target value CERRefTarget, then execute step 303.Also
It is that the resulting CER target value of current scheme is allow to converge to CER target value as defined in agreement by mapping relations.
Specifically, mapping relations are confirmation in advance, specific steps are as follows:
A. transmitting terminal sends known training sequence；
B. it in identical SIR, is utilized respectively hard-decision method and the inconsistent method of bit calculates CER target value；
C. above-mentioned two CER target value is corresponding；
The size for adjusting SIR, repeats A to C, obtains the mapping relations of one group of CER target value.
According to the mapping relations, CER corresponding to CER target value can be also found outRefTarget, specific value such as the following table 2
It is shown, it is clear that the CER is used in outer-loop power controlling methodRefTargetThan using CER target value more accurate.
Table 2
| CER target value | CERRefTarget | CER target value | CERRefTarget |
| 0.01 | 0.06 | 0.06 | 0.22 |
| 0.02 | 0.09 | 0.07 | 0.24 |
| 0.03 | 0.12 | 0.08 | 0.26 |
| 0.04 | 0.15 | 0.09 | 0.29 |
| 0.05 | 0.18 | 0.1 | 0.31 |
There is also the need to explanation, although step 301 and step 302 have an ordinal relation on writing, actually this
Two steps are concurrency relation.That is, the mapping relations confirmed in advance can be first passed through, CER target value is mapped as
CERRefTarget, then CER measured value is counted, it will not influence the execution of step 303.
Step 303, compare CER measured value and CERRefTargetTo adjust sir target value.Namely by comparing step 301
The CER obtained in middle counted CER measured value and step 302RefTarget, to adjust sir target value, specifically, work as CER
Measured value is less than CERRefTargetWhen, sir target value is lowered, when CER measured value is greater than or equal to CERRefTargetWhen, raise SIR
Target value.The adjustment of sir target value can be made more acurrate in this way, so that the outer-loop power controlling method of fractional dedicated physical channel is more
To be accurate, furtherly, due to being needed in inner-loop power control using sir target value, so the accuracy of sir target value also will affect
The accuracy of inner-loop power control.Later by return step 301, continue the external circule power control in next period.
The inner loop power control method of fractional dedicated physical channel is as shown in Figure 4, the specific steps are as follows:
Step 401, sir measurement value is calculated, step 402 is then executed.
Step 402, compare sir measurement value and sir target value；If sir measurement value is less than or equal to sir target value,
Execute step 403；If sir measurement value is greater than sir target value, 404 are thened follow the steps.Specifically, being by practical institute here
The sir measurement value obtained is compared with sir target value adjusted in external circule power control step 303, is compared by size and is generated
To TPC command, which will be used to adjust for transmission power.
Step 403, TPC command 1.That is, if sir measurement value is less than or equal to sir target value, TPC command
For UP command.
Step 404, TPC command 0.That is, TPC command is to lower if sir measurement value is greater than sir target value
Order.
Embodiment of the present invention in terms of existing technologies, mainly for the CER target value determination side in external circule power control
Formula improves, and the aimed quality of its external circule power control of agreement clear stipulaties is the error rate CER of TPC command, but in practice,
Since the sequence of transmitting terminal transmitting is unknown, CER target value can not be according to said method calculated, so passing through statistics ratio in the prior art
Special inconsistent method, that is, receive the inconsistent TPC command number of bit in same time slot and calculate CER target value.Also
It is one outer ring period N of statistics firstOLPC_TThe inconsistent TPC command number N of NepitError, then (1) calculates according to the following formula
Initial TPC command error rate CER, wherein NOLPC_T240 can be rule of thumb set as.
However, the statistical method of CER target value as defined in agreement is hard-decision method: sentencing result firmly according to TPC command
Carry out the statistics of CER, it is assumed that outer ring has sent N in the periodOLPC_TA TPC command " 1 ", then the TPC command number of mistake is according to formula
(2) it is counted:
Then TPC command error rate is calculated according to formula (1).Obviously, the statistical method and in the prior art CER statistical method
Difference, then CER target value as defined in agreement can not be just converged to using the resulting CER of art methods, so according to this
The resulting CER target value of the inconsistent method of bit can be confirmed as firmly by the method in invention embodiment by mapping relations
The reference CER target value CER of decision methodRefTarget, also can be so that the resulting CER of art methods and agreement provide
The resulting CER of statistical method it is consistent so that the Poewr control method of fractional dedicated physical channel is more accurate.
It should be noted that above various methods the step of divide, be intended merely to describe clear, when realization can be merged into
One step splits certain steps, is decomposed into multiple steps, as long as comprising identical logical relation, it is all special at this
In the protection scope of benefit；To added in algorithm or in process it is inessential modification or introduce inessential design, but
The core design of its algorithm and process is not changed all in the protection scope of the patent.
Second embodiment of the present invention also relates to a kind of Poewr control method of fractional dedicated physical channel, this implementation
Mode is further improved on the basis of first embodiment, is mainly theed improvement is that: in second embodiment of the invention
In, it is averaged to the noise of multiple time slots, using the noise calculation sir measurement value after being averaged, so that the measurement of noise is more
Accurately, inaccurate problem is measured when declining serious in the prior art to significantly reduce.
Specifically, as shown in figure 5, step 501, calculates sir measurement value after average to noise, then executes step 502.
That is sliding average first is carried out to the noise of multiple time slots in present embodiment, the noise calculation SIR after recycling averagely
Measurement, the sir measurement value after obtaining noise averagely.So that the measurement of noise is more accurate, to significantly reduce in the prior art
Inaccurate problem is measured when declining serious.Specifically, it is to calculate sir measurement value after being averaged according to formula (3) to noise:
Wherein, N is the length of noise smoothing.For preceding N-1 sir measurement value, several time slots are received, then are carried out several
Time slot is averaged.It specifically, the use of N is 15 in present embodiment.
It should be noted that since sir measurement value in the prior art is using real-time measured value of each moment, thus
Meeting is so that when low signal-to-noise ratio, and sir measurement value is higher, and the sir measurement value in present embodiment is to N number of slotted noise
Gained is calculated after average, it is more accurate.
It should be noted that step 402 of the step 502 into step 504 and first embodiment in present embodiment
Similar to step 404, details are not described herein.Resulting sir measurement value and sir target value ratio are calculated using formula (3) in step 502
The TPC command relatively obtained is more accurate, further increases the accuracy of inner-loop power control, also just further improves the dedicated object in part
Manage the accuracy of the Poewr control method of channel.
It should be noted that above various methods the step of divide, be intended merely to describe clear, when realization can be merged into
One step splits certain steps, is decomposed into multiple steps, as long as comprising identical logical relation, it is all special at this
In the protection scope of benefit；To added in algorithm or in process it is inessential modification or introduce inessential design, but
The core design of its algorithm and process is not changed all in the protection scope of the patent.
Third embodiment of the invention also relates to a kind of Poewr control method of fractional dedicated physical channel, this embodiment party
Formula is further improved in second embodiment, is mainly theed improvement is that: right in third embodiment of the invention
The sir measurement value for carrying out calculating after noise is average in second embodiment has carried out polynomial calibration, so that obtained sir measurement
It is worth more accurate.
Specifically, as shown in fig. 6, the step 601 in third embodiment and step 501 phase in second embodiment
Seemingly, details are not described herein.
The step 602 of present embodiment carries out polynomial calibration to sir measurement value, then executes step 603.Specifically
It says, calibrating multinomial those of ordinary skill in the art used can be according to the comparison of sir measurement value and ideal value before calibration
Gained, that is to say, that piecewise fitting (for example being emulated using MATLAB software) is carried out to the sir measurement value before calibration, is made
Ideal value is approached after obtaining each section of fitting, certainly in theory, the segments the more more approach ideal value, but are segmented more more
The problem of bringing complexity to improve to calculating, so the factors such as overall accuracy and complexity is needed to judge polynomial point in practice
Section.
It should be noted that being to carry out polynomial calibration to sir measurement value according to formula (4) in present embodiment, specifically
Saying, which has been point four sections, is calibrated:
Wherein, fcor() is calibration multinomial, is defined such as formula (5):
Wherein, specific calibration factor is then the coefficient of each section of fitting function, calibration factor used in present embodiment
Table see the table below 3:
3 calibration factor table of table
| Coefficient | Column1 | Column2 | Column3 | Column4 |
| C0 | -0.3273 | -0.689 | -0.569 | -0.5069 |
| C1 | 0.8281 | 0.8635 | 0.8389 | 0.7952 |
| C2 | 0.0023 | 0.0013 | 0.0023 | 0.01 |
It should be noted that above-mentioned polynomial demarcation interval and calibration factor can be by acquired by emulation or experience.
Step 603 in present embodiment is similar to step 504 to the step 502 in second embodiment to step 605,
Details are not described herein, that is, is compared using the sir measurement value after polynomial calibration with sir target value, so that obtain
TPC command is more accurate, further increases the accuracy of inner-loop power control, also just further improves fractional dedicated physical channel
The accuracy of Poewr control method.
Four embodiment of the invention relates to a kind of power control device of fractional dedicated physical channel, connection structure
As shown in fig. 7, specifically including:
Sir target value adjusts module, for the error rate CER by comparing transmitting power control TPC command and refers to CER
Target value adjusts signal interference ratio sir target value；It wherein, is to pass through the resulting life of the inconsistent method statistic of bit with reference to CER target value
Error rate CER target value is enabled to confirm gained through mapping relations, mapping relations first pass through hard-decision method in advance and count resulting CER mesh
Scale value and the resulting CER target value of the inconsistent method statistic of bit emulate acquisition in identical SIR.
TPC command generation module, for comparing sir target value adjustment module sir target value adjusted and sir measurement value
Size generate TPC command.
In terms of existing technologies, the main distinction and effect are: present embodiment improves embodiment of the present invention
Sir target value adjusts module, and required CER target value is confirmed as through mapping relations with reference to CER target value CERRefTarget, make
The resulting CER target value of scheme can converge to CER target value as defined in agreement at present, so that the function of fractional dedicated physical channel
Rate control method is more accurate.
It is not difficult to find that present embodiment is system embodiment corresponding with first embodiment, present embodiment can be with
First embodiment is worked in coordination implementation.The relevant technical details mentioned in first embodiment still have in the present embodiment
Effect, in order to reduce repetition, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in
In first embodiment.
It is noted that each module involved in present embodiment is logic module, and in practical applications, one
A logic unit can be a physical unit, be also possible to a part of a physical unit, can also be with multiple physics lists
The combination of member is realized.In addition, in order to protrude innovative part of the invention, it will not be with solution institute of the present invention in present embodiment
The technical issues of proposition, the less close unit of relationship introduced, but this does not indicate that there is no other single in present embodiment
Member.
Fifth embodiment of the invention also relates to a kind of power control device of fractional dedicated physical channel, and the 5th implements
Mode is further improved on the basis of four embodiments, is mainly theed improvement is that: in four embodiment of the invention
In, it is averaged to the noise of multiple time slots, using the noise calculation sir measurement value after being averaged, so that the measurement of noise is more
Accurately, inaccurate problem is measured when declining serious in the prior art to significantly reduce.
Specifically, as shown in figure 8, containing following submodule in TPC command generation module:
Noise is averaged submodule, is averaged for the noise to N number of time slot, wherein N is the natural number greater than 1.
It is average to obtain noise for the noise calculation sir measurement value after utilizing averagely for sir measurement value acquisition submodule
Sir measurement value.
Sir value Comparative sub-module, the sir measurement value after noise for obtaining sir measurement value acquisition submodule is average
TPC command is generated after comparing with sir target value.
Since second embodiment is corresponded to each other with present embodiment, present embodiment can be mutual with second embodiment
Match implementation.The relevant technical details mentioned in second embodiment are still effective in the present embodiment, implement second
The attainable technical effect of institute similarly may be implemented in the present embodiment in mode, no longer superfluous here in order to reduce repetition
It states.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in second embodiment.
Sixth embodiment of the invention also relates to a kind of power control device of fractional dedicated physical channel, this embodiment party
Formula is the further improvement done on the basis of five embodiments, is mainly theed improvement is that: in the 6th embodiment party of the invention
In formula, polynomial calibration has been carried out to the sir measurement value for carrying out calculating after noise is average in the 5th embodiment, so that obtain
Sir measurement value is more accurate.
Specifically, as shown in figure 9, also including sir measurement value calibration submodule in TPC command generation module, for benefit
Sir measurement value after the noise obtained with multinomial to sir measurement value acquisition submodule is average is calibrated.
It should be noted that the sir value Comparative sub-module in present embodiment is to calibrate sir measurement value calibration submodule
Sir measurement value afterwards compared with the size of sir target value after generate TPC.
Since third embodiment is corresponded to each other with present embodiment, present embodiment can be mutual with third embodiment
Match implementation.The relevant technical details mentioned in third embodiment are still effective in the present embodiment, implement in third
The attainable technical effect of institute similarly may be implemented in the present embodiment in mode, no longer superfluous here in order to reduce repetition
It states.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in third embodiment.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (7)
1. a kind of Poewr control method of fractional dedicated physical channel, which is characterized in that comprise the steps of:
Terminal adjusts signal interference ratio SIR mesh by comparing the error rate CER of transmitting power control TPC command and with reference to CER target value
Scale value；Wherein, the reference CER target value is to pass through the resulting order error rate CER target value of the inconsistent method statistic of bit
Gained is mapped through mapping relations, the mapping relations first pass through hard-decision method in advance and count resulting CER target value and bit not
Consistent method counts resulting CER target value and emulates acquisition in identical SIR；
The size for comparing the sir target value and sir measurement value generates TPC command；
Wherein, the mapping relations are obtained by following sub-step:
A. transmitting terminal sends known training sequence；
B. it in the identical SIR, is utilized respectively the hard-decision method and the inconsistent method of the bit calculates CER target
Value；
C. above-mentioned two CER target value is corresponding；
Adjust SIR size, repeat the A to C, obtain one group described in CER target value mapping relations.
2. the Poewr control method of fractional dedicated physical channel according to claim 1, which is characterized in that in the comparison
The size of the sir target value and sir measurement value generated in the step of TPC command, included following sub-step:
The sir measurement value is calibrated using multinomial, the sir measurement value after being calibrated；
The size of sir measurement value after comparing the sir target value and the calibration generates TPC command.
3. the Poewr control method of fractional dedicated physical channel according to claim 2, which is characterized in that in the utilization
It also include following sub-step before the step of multinomial calibrates the sir measurement value, sir measurement value after being calibrated
It is rapid:
It is averaged to the noise of N number of time slot, wherein N is the natural number greater than 1；
Sir measurement value using the noise calculation sir measurement value after being averaged, after obtaining noise averagely；
The sir measurement value is calibrated using multinomial described, the step of sir measurement value after being calibrated in, benefit
Sir measurement value of the noise after average is calibrated with multinomial, the sir measurement value after obtaining the calibration.
4. the Poewr control method of fractional dedicated physical channel according to claim 1, which is characterized in that in the comparison
The size of the sir target value and sir measurement value generated in the step of TPC command, included following sub-step:
It is averaged to the noise of N number of time slot, wherein N is the natural number greater than 1；
Sir measurement value using the noise calculation sir measurement value after being averaged, after obtaining noise averagely；
The size of sir measurement value after comparing the sir target value and the noise averagely generates TPC command.
5. a kind of power control device of fractional dedicated physical channel, characterized by comprising:
Sir target value adjusts module, for the error rate CER by comparing transmitting power control TPC command and refers to CER target
Value adjustment signal interference ratio sir target value；Wherein, the reference CER target value is to pass through the resulting life of the inconsistent method statistic of bit
Error rate CER target value is enabled to confirm gained through mapping relations, it is resulting that the mapping relations first pass through hard-decision method statistics in advance
CER target value and the resulting CER target value of the inconsistent method statistic of bit emulate acquisition in identical SIR；
TPC command generation module is surveyed for the sir target value adjustment module sir target value adjusted and SIR
The size of magnitude generates TPC command；
Wherein, the TPC command generation module includes following submodule:
Sir measurement value calibration submodule, for being calibrated using multinomial to the sir measurement value, the SIR after being calibrated
Measured value；
Sir value Comparative sub-module, the sir measurement after the calibration obtained for the sir measurement value calibration submodule
The size of value and the sir target value generates the TPC command.
6. the power control device of fractional dedicated physical channel according to claim 5, which is characterized in that the TPC life
It enables in generation module also comprising following submodule:
Noise is averaged submodule, is averaged for the noise to N number of time slot, wherein N is the natural number greater than 1；
Sir measurement value acquisition submodule, for the noise calculation sir measurement value after utilizing averagely, after obtaining noise averagely
Sir measurement value；
The sir measurement value calibration submodule is also used to the institute obtained using multinomial to the sir measurement value acquisition submodule
Sir measurement value after stating noise averagely is calibrated, the sir measurement value after obtaining the calibration.
7. the power control device of fractional dedicated physical channel according to claim 5, which is characterized in that the TPC life
Enabling generation module includes following submodule:
Noise is averaged submodule, is averaged for the noise to N number of time slot, wherein N is the natural number greater than 1；
Sir measurement value acquisition submodule, the SIR for the noise calculation sir measurement value after utilizing averagely, after obtaining noise averagely
Measured value；
Sir value Comparative sub-module, the SIR after the noise for obtaining the sir measurement value acquisition submodule is averaged are surveyed
Magnitude generates the TPC command after comparing with the sir target value.
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