CN102958148A - Method and device for controlling transmission power of user equipment - Google Patents
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Abstract
The invention discloses a method and a device for controlling transmission power of user equipment. The method includes: the UE (user equipment) receives a downlink channel signal from a base station and analyzes the received downlink channel signal; an uplink channel signal is generated according to the analyzed downlink channel signal, and uplink transmission power is computed; a power calibration value of an uplink channel data signal and a power calibration value of a DMRS (demodulation reference signal) are determined respectively according to the downlink channel signal, the uplink transmission power and power increments of the uplink channel data signal and the DMRS; and according to the power calibration value of the uplink channel data signal, the power calibration value of the DMRS, a preset hardware power control parameter and a preset baseband processing characteristic parameter, power calibration of the uplink channel data signal and power calibration of the DMRS are performed respectively in a baseband processing flow, and then power calibration of the uplink channel data signal and power calibration of the DMRS are performed uniformly in a hardware power control flow. The method and the device are capable of controlling the transmission power of the UE accurately.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of user equipment transmitting power control method and device.
Background technology
In order to guarantee subscriber equipment (UE, User Equipment) data rate and reduce this user to other users' interference, uplink transmission power to this user UE in Long Term Evolution (LTE, Long Term Evolution) system and the evolution system thereof has carried out strict restriction.
Because distributing to the bandwidth that UE is used for uplink is variable in scheduling time in unit, in the Base-Band Processing process, if adopt identical handling process during the different bandwidth configuration, will cause the loss of significance of signal baseband signal in processing larger; In the Base-Band Processing process, if adopt different handling processes when different bandwidth configures, will cause the transmitting power of UE sub-frame of uplink to cause larger difference because of the configured bandwidth difference.In addition, Physical Uplink Shared Channel (PUSCH in the LTE system, Physical Uplink Share Channel) processing procedure and the demodulated reference signal (DMRS of data division, DeModulation Reference Signal) processing procedure is different, when if the PUSCH data are not launched according to identical power grade with demodulated reference signal, when will being used for the PUSCH detection of data signal according to the channel impulse response that demodulated reference signal obtains, the base station will have a strong impact on the performance of base station receiver; If when PUSCH data and demodulated reference signal are carried out respectively power control, will greatly increase processing complexity, precision and the power consumption of UE hardware.
From above-mentioned analysis as can be known, if the uplink transmission power of UE in the LTE system is not calibrated, will be so that the transmitting power of UE produce comparatively significant deviation, thus cause the whole system reduction of performance; If improper to the control of the uplink transmission power of UE in the LTE system, will so that the hardware handles cost of UE greatly increase.
Application number is the method and apparatus that has proposed a kind of transmission power calibration of the wireless system for frequency division multiplexing in 200880103688.9 the patent documentation, has proposed in the document and need to transmitting power have been calibrated according to the different band width configuration of UE.
But the document of the prior art just proposes the thinking of transmission power calibration from control flow, the impact that does not have the power increment that will introduce in the base band signal process process is eliminated effectively, the data-signal in the subframe is not adjusted to identical power level with demodulated reference signal yet, will be so that inevitably have deviation between the power of the actual power of UE emission and base station expectation UE emission so process according to the scheme of prior art.
Summary of the invention
The embodiment of the invention provides a kind of user equipment transmitting power control method and device, can control the transmitting power of UE accurately.
The user equipment transmitting power control method that the embodiment of the invention provides comprises:
User equipment (UE) receives the downlink channel signals from the base station, and the downlink channel signals that receives is resolved; UE generates uplink channel signals according to the downlink channel signals after resolving, and calculates uplink transmission power, and described uplink channel signals comprises up channel data-signal and demodulated reference signal DMRS; UE determines respectively the calibration of power value of up channel data-signal and the calibration of power value of DMRS according to the power increment in described downlink channel signals, uplink transmission power, the up channel data-signal generative process and the power increment in the DMRS generative process; UE is according to calibration of power value, the calibration of power value of DMRS, the hardware power control parameters that presets and the Base-Band Processing characterisitic parameter of described up channel data-signal, in the Base-Band Processing flow process, carry out respectively first the calibration of power of up channel data-signal and the calibration of power of DMRS, the more unified calibration of power of up channel data-signal and the calibration of power of DMRS of carrying out in hardware power control flow process.
Alternatively, the up channel data-signal after the described calibration of power and demodulated reference signal have the power level grade of zero error in subframe.
Alternatively, up channel is the one or more combination among Physical Uplink Shared Channel PUSCH, Physical Uplink Control Channel PUCCH, Physical Random Access Channel PRACH and the detection reference signal channel SRS.
Alternatively, described downlink channel signals comprises power control relevant information and the uplink authorization information relevant with sending uplink channel signals.
Alternatively, described uplink authorization information comprises resource allocation information, modulation coding mode, mixed automatic retransfer request HARQ information, through-put power control TPC and channel quality indicator CQI information.
Alternatively, described UE determines respectively that according to the power increment in described downlink channel signals, uplink transmission power, the up channel data-signal generative process and the power increment in the DMRS generative process calibration of power value of up channel data-signal and the calibration of power value of DMRS comprise:
UE determines that calibration of power value and the reference bandwidth under the reference bandwidth configuration configures the down corresponding relation of the uplink transmission power of system requirements UE;
UE determines current band width configuration according to the uplink authorization information in the downlink channel signals;
UE configures according to current bandwidth, determines the difference of the power increment introduced in the base band signal process process when power increment of introducing in the base band signal process process configures with respect to reference bandwidth;
The difference of the power increment of introducing in the base band signal process process when UE configures with respect to reference bandwidth in conjunction with the power increment of introducing in the up channel data-signal under described uplink transmission power, described corresponding relation, the current bandwidth configuration and the DMRS processing procedure, respectively the up channel data-signal under definite current bandwidth configuration and the calibration of power value of DMRS.
Alternatively, the difference of the power increment of introducing in the base band signal process process when power increment of introducing in the up channel data-signal under the described current bandwidth configuration and the demodulated reference signal processing procedure configures with respect to reference bandwidth perhaps obtains by depositing table by calculating in real time.
The user equipment transmitting power control device that the embodiment of the invention provides comprises:
Receiving element is used for receiving the downlink channel signals from the base station, and the downlink channel signals that receives is resolved; Generation unit is used for generating uplink channel signals according to the downlink channel signals after resolving, and described uplink channel signals comprises up channel data-signal and demodulated reference signal DMRS; Power calculation unit is used for calculating uplink transmission power according to the downlink channel signals after resolving; The calibration value computing unit, be used for according to the power increment of described downlink channel signals, uplink transmission power, up channel data-signal generative process and the power increment in the DMRS generative process, determine respectively the calibration of power value of up channel data-signal and the calibration of power value of DMRS; Calibration of power unit, be used for calibration of power value, the calibration of power value of DMRS, the hardware power control parameters that presets and Base-Band Processing characterisitic parameter according to described up channel data-signal, in the Base-Band Processing flow process, carry out respectively first the calibration of power of up channel data-signal and the calibration of power of DMRS, the more unified calibration of power of up channel data-signal and the calibration of power of DMRS of carrying out in hardware power control flow process.
Alternatively, described calibration of power unit carries out up channel data-signal after the calibration of power and demodulated reference signal have zero error in subframe power level grade.
Alternatively, described calibration value computing unit comprises:
The corresponding relation determination module is for the corresponding relation of the uplink transmission power of system requirements UE under the calibration of power value under definite reference bandwidth configuration and the reference bandwidth configuration;
The band width configuration determination module is used for determining current band width configuration according to the uplink authorization information of downlink channel signals;
Difference calculating module is used for according to the current bandwidth configuration, determines the difference of the power increment introduced in the base band signal process process when power increment of introducing in the base band signal process process configures with respect to reference bandwidth;
The calibration value computing module, the difference that is used for the power increment introduced in the base band signal process process when configure with respect to reference bandwidth in conjunction with the power increment that the lower up channel data-signal of described uplink transmission power, described corresponding relation, current bandwidth configuration and DMRS processing procedure are introduced, the up channel data-signal under definite current bandwidth configures respectively and the calibration of power value of DMRS.
As can be seen from the above technical solutions, the embodiment of the invention has the following advantages:
In the embodiment of the invention, UE does not consider the variation of signal power in carrying out the base band signal process process of up channel data-signal and DMRS, has guaranteed to greatest extent the precision of Base-Band Processing;
Secondly, be adjusted to same power grade after the power adjustment of the power of up channel data-signal and DMRS by baseband portion, can guarantee effectively that the base station utilizes DMRS to carry out the performance of channel estimating and detection of data signal;
Again, UE is in conjunction with the power increment in the downlink channel signals of base station, uplink transmission power, the up channel data-signal generative process and the power increment in the demodulated reference signal generative process, determine respectively the calibration of power value of up channel data-signal and the calibration of power value of demodulated reference signal, by the calibration of power of the calibration of power of up channel data-signal and demodulated reference signal accurately being controlled the uplink transmission power of UE, effectively guaranteed the precision of UE baseband signal, when transmitted power satisfied predetermined transmitted power, the processing complexity of hardware was lower;
Further, in the embodiment of the invention, when different bandwidth configures, do not consider in the base band signal process process that power changes, and at the calibration of power value computing module power increment in the base band signal process process is compensated, this mode does not increase the complexity of the calibration of power module when effectively guaranteeing the precision of baseband signal.
Description of drawings
Fig. 1 is embodiment schematic diagram of user equipment transmitting power control method of the present invention;
Fig. 2 is another embodiment schematic diagram of user equipment transmitting power control method of the present invention;
Fig. 3 is embodiment schematic diagram of user equipment transmitting power control device of the present invention.
Embodiment
The embodiment of the invention provides a kind of user equipment transmitting power control method and device, can control the transmitting power of UE accurately.
See also Fig. 1, embodiment of user equipment transmitting power control method of the present invention comprises:
101, UE receives the downlink channel signals from the base station, and the downlink channel signals that receives is resolved;
In the present embodiment, UE can receive the downlink channel signals that the base station sends by down channel, receives after the downlink channel signals, can resolve this downlink channel signals, and detailed process is not construed as limiting herein.
102, UE generates uplink channel signals according to the downlink channel signals after resolving, and calculates uplink transmission power;
After UE resolves downlink channel signals, can generate uplink channel signals according to the downlink channel signals after resolving, and calculate uplink transmission power.
In the present embodiment, this uplink channel signals comprises up channel data-signal and DMRS.
103, UE determines respectively the calibration of power value of up channel data-signal and the calibration of power value of DMRS according to the power increment in downlink channel signals, uplink transmission power, the up channel data-signal generative process and the power increment in the DMRS generative process;
UE can generate up channel data-signal and DMRS by step 102, then UE can calculate power increment in the up channel data-signal generative process and the power increment in the DMRS generative process, in conjunction with downlink channel signals and uplink transmission power, then can determine respectively the calibration of power value of up channel data-signal and the calibration of power value of DMRS again.
104, UE is according to calibration of power value, the calibration of power value of DMRS, the hardware power control parameters that presets and the Base-Band Processing characterisitic parameter of described up channel data-signal, in the Base-Band Processing flow process, carry out respectively first the calibration of power of up channel data-signal and the calibration of power of DMRS, the more unified calibration of power of up channel data-signal and the calibration of power of DMRS of carrying out in hardware power control flow process.
In the present embodiment, UE can be according to the power increment in the up channel data-signal generative process that calculates in the step 103, the power increment in the DMRS generative process, again according to the hardware power control parameters and the Base-Band Processing characterisitic parameter that preset, in the Base-Band Processing flow process, carry out respectively first the calibration of power of up channel data-signal and the calibration of power of DMRS, the more unified calibration of power of up channel data-signal and the calibration of power of DMRS of carrying out in hardware power control flow process.
In the present embodiment, UE does not consider the variation of signal power in carrying out the base band signal process process of up channel data-signal and DMRS, has guaranteed to greatest extent the precision of Base-Band Processing;
Secondly, be adjusted to same power grade after the power adjustment of the power of up channel data-signal and DMRS by baseband portion, can guarantee effectively that the base station utilizes DMRS to carry out the performance of channel estimating and detection of data signal;
Again, UE is in conjunction with the power increment in the downlink channel signals of base station, uplink transmission power, the up channel data-signal generative process and the power increment in the demodulated reference signal generative process, determine respectively the calibration of power value of up channel data-signal and the calibration of power value of demodulated reference signal, by the calibration of power of the calibration of power of up channel data-signal and demodulated reference signal accurately being controlled the uplink transmission power of UE, effectively guaranteed the precision of UE baseband signal, when transmitted power satisfied predetermined transmitted power, the processing complexity of hardware was lower.
For ease of understanding, the below is described in detail user equipment transmitting power control method of the present invention with an instantiation, sees also Fig. 2, and another embodiment of user equipment transmitting power control method of the present invention comprises:
201, UE receives the downlink channel signals from the base station, and the downlink channel signals that receives is resolved;
In the present embodiment, UE can receive the downlink channel signals that the base station sends by down channel from the base station, receive after the downlink channel signals, can resolve this downlink channel signals, and detailed process is not construed as limiting herein.
Downlink channel signals in the present embodiment comprises power control relevant information and the uplink authorization information relevant with sending uplink channel signals.
This uplink authorization information can comprise resource allocation information, modulation coding mode, mixed automatic retransfer request (HARQ, Hybrid Automatic Repeat Request) information, through-put power control (TPC, Transport Power Control) and channel quality indication (CQI, Channel Quality Indicator) information.
Power control relevant information is included among the DCI0 and DCI3/DCI3A of downlink channel signals, and uplink authorization information is included among the DCI0.
202, UE generates uplink channel signals according to the downlink channel signals after resolving, and calculates uplink transmission power;
After UE resolves downlink channel signals, can generate uplink channel signals according to the downlink channel signals after resolving, and calculate uplink transmission power.
In the present embodiment, this uplink channel signals comprises up channel data-signal and DMRS.
Up channel in the present embodiment can be PUSCH, Physical Uplink Control Channel (PUCCH, Physical Uplink Control Channel), Physical Random Access Channel (PRACH, Physical Random Access Channel) and the one or more combination in the detection reference signal channel (SRS, Sounding Reference Signal).
The process of concrete generation uplink channel signals can be finished according to 3GPP TS 36.211,36.212 and 36.213 agreements, does not consider the constant of power in realization, to guarantee that the uplink channel signals maximal accuracy is as target.
Accordingly, the process of calculating uplink transmission power also can be calculated according to the formula of 5.1 joints in the 3GPP TS36.213 agreement.
In the present embodiment, UE carries out the generation of PUSCH uplink channel signals according to the uplink authorization information among the DCI0 that resolves, the PUSCH transport channel data is processed through scrambling, modulation and transfer pre-coding successively, in realization, do not consider the constant of power, to guarantee that the uplink channel signals maximal accuracy is as target; The generation method of PUSCH demodulated reference signal can save with reference to TS36.211 agreement 5.5.2.1.
UE is mapped to PUSCH data and PUSCH demodulated reference signal according to the mapping ruler of PUSCH channel the data of a subframe, supposes not carry out on the PUSCH SRS transmission herein.Data after the mapping obtain base band PUSCH up channel data-signal and demodulated reference signal to be sent through the SC-FDMA Base-Band Processing.
According to the base station down channel signal of resolving, UE carries out the calculating of PUSCH transmitting power in the sub-frame of uplink i according to following formula, and the power that this formula calculates is the PUSCH transmitting power of the UE of base station expectation, and unit is dBm:
P
PUSCH(i)＝min{P
CMAX，10log
10(M
PUSCH(i))+P
O_PUSCH(j)+α(j)·PL+Δ
TF(i)+f(i)} (1)
In the above-mentioned formula, P
CMAXIt is the maximum transmitting power of supporting of UE;
M
PUSCH(i) expression DCI0 distributes to the PRB number of UE;
P
O_PUSCH(j) be the power reference value of a semi-static setting, can obtain according to base station control information parsing, the j value is 0,1 or 2;
α (j) expression can obtain according to base station control information parsing the compensation rate (path loss compensating factor) of path loss;
PL represents downlink path-loss, take dB as unit, measures descending residential quarter public reference signal by UE and obtains;
Δ
TF(i) be a side-play amount corresponding with code rate and modulation system, can obtain according to base station control information analytical Calculation;
F (i) is the power increment amount, and is mainly relevant with the TPC order.
203, UE determines that calibration of power value and reference bandwidth under the reference bandwidth configuration configure the down corresponding relation of the uplink transmission power of system requirements UE;
UE can generate up channel data-signal and DMRS, then UE can calculate power increment in the up channel data-signal generative process and the power increment in the DMRS generative process, in conjunction with downlink channel signals and uplink transmission power, then can determine respectively the calibration of power value of up channel data-signal and the calibration of power value of DMRS again.
Concrete, UE can determine at first that calibration of power value and the reference bandwidth under the reference bandwidth configuration configures the down corresponding relation of the uplink transmission power of system requirements UE, is described as an example of PUSCH channel data signal example, method of measurement is:
To launch by radio circuit through the PUSCH channel data signal after the calibration, record the actual power value of UE emission by instruments such as frequency spectrographs, can obtain following formula according to measurement result:
Wherein,
Represent that this formula the right and left possesses equivalent mapping relations, but not relation of equality;
Be understandable that, it is that benchmark obtains above-mentioned expression formula that this step also can adopt the PUSCH demodulated reference signal, specifically repeats no more herein.
204, UE determines current band width configuration according to the uplink authorization information in the downlink channel signals;
In the present embodiment, UE can get access to uplink authorization information from downlink channel signals, then can determine current band width configuration according to this uplink authorization information, and detailed process is not construed as limiting herein.
205, UE configures according to current bandwidth, determines the difference of the power increment introduced in the base band signal process process when power increment of introducing in the base band signal process process configures with respect to reference bandwidth;
UE can configure according to current bandwidth, determines the difference of the power increment introduced in the base band signal process process when power increment of introducing in the PUSCH channel data signal baseband signal processing configures with respect to reference bandwidth, and this difference is designated as Δ P.
The power increment of introducing in the lower up channel data-signal processing procedure of current bandwidth configuration
The power increment of introducing in the base band signal process process when configuring with respect to reference bandwidth
Difference DELTA P can calculate in real time and also can deposit table and realize, depositing the size that need to show when table is realized is total number of configurable amount of bandwidth.
In like manner, the power increment of introducing in the lower uplink demodulation reference signal processing procedure of current bandwidth configuration
The power increment of introducing in the base band signal process process when configuring with respect to reference bandwidth
Difference DELTA P ' be expressed as:
The difference of the power increment of introducing in the base band signal process process when 206, UE configures with respect to reference bandwidth in conjunction with the power increment of introducing in the up channel data-signal under uplink transmission power, corresponding relation, the current bandwidth configuration and the DMRS processing procedure, respectively the up channel data-signal under definite current bandwidth configuration and the calibration of power value of DMRS;
Can get the transmitting power of the lower base station expectation of current PRB configuration UE according to formula (2)
Calibration power with up channel data-signal under the current PRB configuration
Relational expression be:
Transmitting power with the lower base station expectation of current PRB configuration UE
PUSCH transmitting power with the UE of base station expectation under the reference bandwidth configuration
Difference table be shown c, that is:
Can get according to formula (2), (3), (5) and (6):
As seen, the calibration of power value of the up channel data-signal under the current bandwidth configuration
Calibration of power value under only configuring with reference bandwidth
The transmitting power of the lower base station expectation of current PRB configuration UE
PUSCH transmitting power with the UE of base station expectation under the reference bandwidth configuration
The lower base band signal process process of difference c, current bandwidth configuration in the power increment introduced relevant with respect to the difference DELTA P of the power increment of introducing in the lower base band signal process process of reference bandwidth configuration.Wherein, the calibration of power value under the reference bandwidth configuration
PUSCH transmitting power with the UE of base station expectation under the reference bandwidth configuration
All be definite known, irrelevant with the schedule information of base station;
The transmitting power of the lower base station expectation of current PRB configuration UE
The control information that has issued according to the base station calculates;
The power increment of introducing in the lower base band signal process process of current bandwidth configuration can calculate in real time also and can obtain by depositing table with respect to the difference DELTA P of the power increment of introducing in the lower base band signal process process of reference bandwidth configuration.
In like manner, the demodulated reference signal calibration of power value under the current bandwidth configuration
Calibration of power value under only configuring with reference bandwidth
The transmitting power of the lower base station expectation of current PRB configuration UE
PUSCH transmitting power with the UE of base station expectation under the reference bandwidth configuration
The lower base band signal process process of difference c and current bandwidth configuration in the power increment introduced relevant with respect to the difference DELTA P ' of the power increment of introducing in the lower base band signal process process of reference bandwidth configuration, wherein:
Wherein
Be the power increment introduced in the lower PUSCH demodulated reference signal base band signal process process of reference bandwidth configuration, mainly be expressed as relevant with the band width configuration of system, but should value relevant with whole demodulated reference signal Base-Band Processing process in the present embodiment.
207, UE is according to the calibration of power value of up channel data-signal, the calibration of power value of DMRS, the hardware power control parameters that presets and Base-Band Processing characterisitic parameter, in the Base-Band Processing flow process, carry out respectively first the calibration of power of up channel data-signal and the calibration of power of DMRS, the more unified calibration of power of up channel data-signal and the calibration of power of DMRS of carrying out in hardware power control flow process.
UE can be according to the power increment in the up channel data-signal generative process that calculates, the power increment in the DMRS generative process, again according to the hardware power control parameters and the Base-Band Processing characterisitic parameter that preset, in the Base-Band Processing flow process, carry out respectively first the calibration of power of up channel data-signal and the calibration of power of DMRS, the calibration of power of up channel data-signal and the calibration of power of DMRS are carried out in unification in hardware power control flow process again, and the up channel data-signal after the calibration of power and demodulated reference signal have the power level grade of zero error in subframe.
The calibration of power can realize by the baseband signal of software section, hardware is realized and software and hardware combining realizes; Preferably, can adopt software and hardware combining to realize in the present embodiment, calibration value comprises the calibration of power of base band signal process part and the calibration of power of hardware components, specifically comprises the steps:
(1), gets the calibration of power value of the PUSCH channel data signal under the current bandwidth configuration
With the PUSCH demodulated reference signal calibration of power value under the current bandwidth configuration
In smaller value, the calibration of power value that this is less rounds downwards, is designated as
(2), according to the calibration of power value of the PUSCH channel data signal under the current bandwidth configuration
With
Difference finish the calibration of power of the base band signal process part of PUSCH channel data signal;
Calibration of power value according to the PUSCH demodulated reference signal under the current bandwidth configuration
With
Difference finish the calibration of power of the base band signal process part of PUSCH demodulated reference signal.
(3), according to obtaining in the above-mentioned steps
Finish the calibration of power of the hardware components of PUSCH channel data signal and PUSCH demodulated reference signal.
Can find out from top (1) and (2), the base band adjustment is adjusted the power of data and DMRS respectively; Can find out from (3), hardware components only need be pressed for Data and DMRS
Value is adjusted once.
In the present embodiment, do not consider the variation of power in the baseband signal generative process, effectively guaranteed the precision that baseband signal generates;
Secondly, UE records the power increment of introducing in the base band signal process and compensates in the baseband signal by the calibration of power; During power back-off, the power of decimal dB part is finished compensation in base band; Radio frequency is only calibrated the power of integer dB part, and this in conjunction with the characteristics of software and hardware power control, when guaranteeing precision, has greatly reduced complexity and the cost of hardware power control effectively;
Again, UE adjusts to identical power level with the power of up channel data-signal in the same subframe and demodulated reference signal in base band signal process, guaranteed that effectively the base station end utilizes demodulated reference signal to carry out the performance of channel estimating and detection of data signal.And do not need respectively up channel data-signal and demodulated reference signal to be carried out the hardware power control, a sub-frame of uplink only needs a power control of hardware setting to get final product, and has reduced complexity, loss of significance and the power consumption of hardware handles.
The above is illustrated user equipment transmitting power control method of the present invention, and the below introduces user equipment transmitting power control device of the present invention, sees also Fig. 3, and embodiment of user equipment transmitting power control device of the present invention comprises:
Receiving element 301 is used for receiving the downlink channel signals from the base station, and the downlink channel signals that receives is resolved;
Calibration value computing unit 304, be used for according to the power increment of downlink channel signals, uplink transmission power, up channel data-signal generative process and the power increment in the DMRS generative process, determine respectively the calibration of power value of up channel data-signal and the calibration of power value of DMRS;
Calibration of power unit 305, be used for according to the calibration of power value of up channel data-signal, the calibration of power value of DMRS, the hardware power control parameters that presets and Base-Band Processing characterisitic parameter, in the Base-Band Processing flow process, carry out respectively first the calibration of power of up channel data-signal and the calibration of power of DMRS, the more unified calibration of power of up channel data-signal and the calibration of power of DMRS of carrying out in hardware power control flow process.
In the present embodiment, calibration of power unit 305 carries out up channel data-signal after the calibration of power and demodulated reference signal have zero error in subframe power level grade.
Calibration value computing unit 304 in the present embodiment can further include:
Corresponding relation determination module 3041 is for the corresponding relation of the uplink transmission power of system requirements UE under the calibration of power value under definite reference bandwidth configuration and the reference bandwidth configuration;
Band width configuration determination module 3042 is used for determining current band width configuration according to the uplink authorization information of downlink channel signals;
Difference calculating module 3043 is used for according to the current bandwidth configuration, determines the difference of the power increment introduced in the base band signal process process when power increment of introducing in the base band signal process process configures with respect to reference bandwidth;
Calibration value computing module 3044, the difference that is used for the power increment introduced in the base band signal process process when configure with respect to reference bandwidth in conjunction with the power increment that the lower up channel data-signal of uplink transmission power, corresponding relation, current bandwidth configuration and DMRS processing procedure are introduced, the up channel data-signal under definite current bandwidth configures respectively and the calibration of power value of DMRS.
In the present embodiment, the specific implementation of each unit and functions of modules and the method flow of aforementioned middle description embodiment illustrated in fig. 2 are similar, repeat no more herein.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to finish by program, this program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
Above a kind of user equipment transmitting power control method provided by the present invention and device are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, all will change in specific embodiments and applications, therefore, this description should not be construed as limitation of the present invention.
Claims (10)
1. a user equipment transmitting power control method is characterized in that, comprising:
User equipment (UE) receives the downlink channel signals from the base station, and the downlink channel signals that receives is resolved;
UE generates uplink channel signals according to the downlink channel signals after resolving, and calculates uplink transmission power, and described uplink channel signals comprises up channel data-signal and demodulated reference signal DMRS;
UE determines respectively the calibration of power value of up channel data-signal and the calibration of power value of DMRS according to the power increment in described downlink channel signals, uplink transmission power, the up channel data-signal generative process and the power increment in the DMRS generative process;
UE is according to calibration of power value, the calibration of power value of DMRS, the hardware power control parameters that presets and the Base-Band Processing characterisitic parameter of described up channel data-signal, in the Base-Band Processing flow process, carry out respectively first the calibration of power of up channel data-signal and the calibration of power of DMRS, the more unified calibration of power of up channel data-signal and the calibration of power of DMRS of carrying out in hardware power control flow process.
2. method according to claim 1 is characterized in that, the up channel data-signal after the described calibration of power and demodulated reference signal have the power level grade of zero error in subframe.
3. method according to claim 1 is characterized in that, up channel is the one or more combination among Physical Uplink Shared Channel PUSCH, Physical Uplink Control Channel PUCCH, Physical Random Access Channel PRACH and the detection reference signal channel SRS.
4. each described method in 3 according to claim 1 is characterized in that, described downlink channel signals comprises power control relevant information and the uplink authorization information relevant with sending uplink channel signals.
5. method according to claim 4 is characterized in that, described uplink authorization information comprises resource allocation information, modulation coding mode, mixed automatic retransfer request HARQ information, through-put power control TPC and channel quality indicator CQI information.
6. method according to claim 4, it is characterized in that, described UE determines respectively that according to the power increment in described downlink channel signals, uplink transmission power, the up channel data-signal generative process and the power increment in the DMRS generative process calibration of power value of up channel data-signal and the calibration of power value of DMRS comprise:
UE determines that calibration of power value and the reference bandwidth under the reference bandwidth configuration configures the down corresponding relation of the uplink transmission power of system requirements UE;
UE determines current band width configuration according to the uplink authorization information in the downlink channel signals;
UE configures according to current bandwidth, determines the difference of the power increment introduced in the base band signal process process when power increment of introducing in the base band signal process process configures with respect to reference bandwidth;
The difference of the power increment of introducing in the base band signal process process when UE configures with respect to reference bandwidth in conjunction with the power increment of introducing in the up channel data-signal under described uplink transmission power, described corresponding relation, the current bandwidth configuration and the DMRS processing procedure, respectively the up channel data-signal under definite current bandwidth configuration and the calibration of power value of DMRS.
7. method according to claim 6, it is characterized in that, the difference of the power increment of introducing in the base band signal process process when power increment of introducing in the up channel data-signal under the described current bandwidth configuration and the demodulated reference signal processing procedure configures with respect to reference bandwidth perhaps obtains by depositing table by calculating in real time.
8. a user equipment transmitting power control device is characterized in that, comprising:
Receiving element is used for receiving the downlink channel signals from the base station, and the downlink channel signals that receives is resolved;
Generation unit is used for generating uplink channel signals according to the downlink channel signals after resolving, and described uplink channel signals comprises up channel data-signal and demodulated reference signal DMRS;
Power calculation unit is used for calculating uplink transmission power according to the downlink channel signals after resolving;
The calibration value computing unit, be used for according to the power increment of described downlink channel signals, uplink transmission power, up channel data-signal generative process and the power increment in the DMRS generative process, determine respectively the calibration of power value of up channel data-signal and the calibration of power value of DMRS;
Calibration of power unit, be used for calibration of power value, the calibration of power value of DMRS, the hardware power control parameters that presets and Base-Band Processing characterisitic parameter according to described up channel data-signal, in the Base-Band Processing flow process, carry out respectively first the calibration of power of up channel data-signal and the calibration of power of DMRS, the more unified calibration of power of up channel data-signal and the calibration of power of DMRS of carrying out in hardware power control flow process.
9. device according to claim 8 is characterized in that, described calibration of power unit carries out up channel data-signal after the calibration of power and demodulated reference signal have zero error in subframe power level grade.
10. according to claim 8 or 9 described devices, it is characterized in that, described calibration value computing unit comprises:
The corresponding relation determination module is for the corresponding relation of the uplink transmission power of system requirements UE under the calibration of power value under definite reference bandwidth configuration and the reference bandwidth configuration;
The band width configuration determination module is used for determining current band width configuration according to the uplink authorization information of downlink channel signals;
Difference calculating module is used for according to the current bandwidth configuration, determines the difference of the power increment introduced in the base band signal process process when power increment of introducing in the base band signal process process configures with respect to reference bandwidth;
The calibration value computing module, the difference that is used for the power increment introduced in the base band signal process process when configure with respect to reference bandwidth in conjunction with the power increment that the lower up channel data-signal of described uplink transmission power, described corresponding relation, current bandwidth configuration and DMRS processing procedure are introduced, the up channel data-signal under definite current bandwidth configures respectively and the calibration of power value of DMRS.
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