CN106941714A - Poewr control method, device and base station - Google Patents
Poewr control method, device and base station Download PDFInfo
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- CN106941714A CN106941714A CN201610006134.3A CN201610006134A CN106941714A CN 106941714 A CN106941714 A CN 106941714A CN 201610006134 A CN201610006134 A CN 201610006134A CN 106941714 A CN106941714 A CN 106941714A
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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
- H04W52/08—Closed loop power control
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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
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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
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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Abstract
The invention discloses a kind of Poewr control method, device and base station, including：Obtain the radio frequency unit number that cell combining is carried out in business configuration；Radio frequency is calculated according to the radio frequency unit number and merges gain；Gain-boosted op amp uplink transmission power is merged according to the radio frequency and determines parameter；Determine that parameter obtains target uplink transmission power according to revised power.Calculated by obtaining the radio frequency unit number of participation cell combining and obtain radio frequency merging gain, then merging gain according to the radio frequency determines that parameter is changed accordingly to uplink transmission power；Because modification uplink transmission power determines to consider thermal noise of multiple far end radio frequency combining units in merging during parameter, so determining that parameter calculates obtained target uplink transmission power closer to desired uplink transmission power according to amended uplink transmission power, so as to eliminate follow-up numerous and diverse adjustment process, the time of power control process is saved.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of Poewr control method, device and base station.
Background technology
Cell combining technology refers to connect multiple remote radio unit (RRU)s (Radio Remote Unit, RRU)
In same baseband processing unit (Building Base band Unit, BBU), and it is set to same logic
Cell.At present, the application of cell combining technology is mainly concerned with base band cell combining system and radio frequency merges system
System.
In radio frequency folding, the multiple remote radio unit (RRU)s for participating in cell combining only regard 1 as to base band
Cell, only can be seen multiple radio frequency units in Operation and Maintenance face, this way on the one hand reduce number of cells,
Base-band resource has been saved, meanwhile, also solve multiple radio frequency units and effectively lifted with Pin Lin areas interference problem
Network performance.
For traditional base band cell combining system or non-cell combining system, uplink noise figure
Smaller, Power Control is according to third generation partner program (3rd Generation Partnership
Project, 3GPP) agreement unified standard implementation, it can not consider noise coefficient in up basic open loop operating point
Influence to system, and conventional baseband cell combining system can directly obtain after upward signal is received
Take the signal to noise ratio for receiving signal.Therefore, in base band cell combining system, the control to uplink transmission power
It is direct according to the signal to noise ratio got, the transmission power of user terminal is carried out using close-loop power control accurate
Really correction.
But the mode of close-loop power control is not but very applicable in radio frequency combination system, this is present at least
Both sides reason：First, in radio frequency combination system, uplink path noise coefficient is with combining number
Increase and increase, for example, when 32 radio frequency units are merged, its noise coefficient is compared to nonjoinder
Situation add 10*lg (32), i.e. 15dB.Therefore, if in the case, still as base band cell
Equally ignore noise coefficient in combination system to carry out the setting of initial uplink transmit power, then on this is initial
Row transmit power and actual desired uplink transmission power difference are very big, that is, need the difference being corrected just
It is very big.On the other hand, in radio frequency combination system, baseband processing unit can also obtain signal to noise ratio,
Simply initial work location deviation ratio is larger, and adjustment time can be made elongated.
The content of the invention
The main technical problem to be solved in the present invention is to provide a kind of uplink transmission power control strategy, solves
In the prior art, open loop operating point is non-is in optimum state, and by using close-loop power control strategy to penetrating
When uplink transmission power in frequency combination system is adjusted, adjustment time length and adjustment can not settle at one go
Technical problem.
In order to solve the above technical problems, the present invention provides a kind of Poewr control method, it is characterised in that including：
Obtain the radio frequency unit number that cell combining is carried out in business configuration；
Radio frequency is calculated according to the radio frequency unit number and merges gain；
Gain-boosted op amp uplink transmission power is merged according to the radio frequency and determines parameter；
Determine that parameter obtains target uplink transmission power according to revised power.
In an embodiment of the present invention, the power determine parameter include user terminal power reference parameter and
At least one in downlink path loss.
In an embodiment of the present invention, the power determines that parameter is joined including the user terminal power reference
During number, correcting the user terminal power reference parameter includes：
Obtain original user terminal power basic parameter；
The original user terminal power basic parameter is merged into gain progress read group total with the radio frequency to obtain
Revised user terminal power reference parameter.
In an embodiment of the present invention, obtained according to revised user terminal power reference parameter in target
Row transmit power includes：
The target uplink transmission power is obtained according to uplink transmission power computing formula as follows：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Semi-static power reference is represented, is the revised user terminal work(
Rate basic parameter and cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is
User terminal measurement downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and coding
Speed and the corresponding offset of modulation system；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；f(x)
Represent the function provided by high level.
In an embodiment of the present invention, when the power determines that parameter includes the downlink path loss, repair
Just described downlink path loss includes：
Obtain the received power value that user terminal receives reference signal；
The amendment transmission power level of the reference signal is obtained, the amendment transmission power level is to be described with reference to letter
Number actual emission power value merge gain sum with the radio frequency；
Calculated according to the received power value with the amendment transmission power level and obtain revised downlink path damage
Consumption.
In an embodiment of the present invention, the up transmission work(of target is obtained according to revised downlink path loss
Rate includes：
The target uplink transmission power is obtained according to uplink transmission power computing formula as follows：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Represent semi-static power reference, be user terminal power reference parameter with
Cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is described revised
Downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and code rate and modulation methods
The corresponding offset of formula；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；F (x) is represented by high level
The function provided.
In an embodiment of the present invention, calculating radio frequency merging gain according to the radio frequency unit number includes root
According to formula：
Radio frequency merges gain=10*lg (N), and N is the radio frequency unit number；
Calculating obtains the radio frequency and merges gain.
The present invention also provides a kind of output control device, including：
Radio frequency merges acquiring unit, carries out the radio frequency unit number of cell combining in business configuration for obtaining；
Merge gain calculating unit, merge gain for calculating radio frequency according to the radio frequency unit number；
Parameters revision unit, parameter is determined for merging gain-boosted op amp uplink transmission power according to the radio frequency；
Transmit power determining unit, for determining that parameter obtains the up transmission work(of target according to revised power
Rate.
In an embodiment of the present invention, the parameters revision unit is repaiied including user terminal power reference parameter
At least one in positive unit and downlink path loss amending unit two.
In an embodiment of the present invention, the user terminal power reference parameters revision unit, which is used to correct, to be used
Family terminal power basic parameter；It includes：
Initial data acquisition module, for obtaining original user terminal power basic parameter；
First correcting module, for the original user terminal power basic parameter to be merged into increasing with the radio frequency
Benefit carries out read group total and obtains revised user terminal power reference parameter.
In an embodiment of the present invention, the transmit power determining unit includes the first power computation module,
First power computation module is up for obtaining target according to revised user terminal power reference parameter
Transmit power, to specifically include that obtain the target according to uplink transmission power computing formula as follows up
Transmit power：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Semi-static power reference is represented, is the revised user terminal work(
Rate basic parameter and cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is
User terminal measurement downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and coding
Speed and the corresponding offset of modulation system；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；f(x)
Represent the function provided by high level.
In an embodiment of the present invention, the downlink path loss amending unit is used to correct downlink path damage
Consumption, it includes：
Received power value acquisition module, the received power value of reference signal is received for obtaining user terminal；
Correct transmission power level acquisition module, the amendment transmission power level for obtaining the reference signal, institute
State amendment transmission power level for the reference signal actual emission power value merge with the radio frequency gain it
With；
Second correcting module, is obtained for being calculated according to the received power value with the amendment transmission power level
Revised downlink path loss.
In an embodiment of the present invention, the transmit power determining unit includes the second power computation module,
Second power computation module is used to obtain the up transmission work(of target according to revised downlink path loss
Rate, specifically includes and obtains the up transmission work(of the target according to uplink transmission power computing formula as follows
Rate：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Represent semi-static power reference, be user terminal power reference parameter with
Cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is described revised
Downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and code rate and modulation methods
The corresponding offset of formula；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；F (x) is represented by height
The function that layer is provided.
In an embodiment of the present invention, the merging gain calculating unit is according to the radio frequency unit number meter
Calculate radio frequency and merge gain including according to formula：
Radio frequency merges gain=10*lg (N), and N is the radio frequency unit number；
Calculating obtains the radio frequency and merges gain.
The present invention also provides a kind of base station, including output control device as described above.
The beneficial effects of the invention are as follows：
The method for controlling uplink transmission power provided using the present invention, the radio frequency of cell combining is participated in by obtaining
Unit number obtains radio frequency merging gain to calculate, and then merges gain to uplink transmission power according to the radio frequency
Determine that parameter is changed accordingly；Because modification uplink transmission power determines to consider multiple distal ends during parameter
Thermal noise of the radio frequency unit when merging, so determining that parameter is calculated according to amended uplink transmission power
The target uplink transmission power arrived is closer to desired uplink transmission power, so as to eliminate follow-up numerous and diverse
Adjustment process, saves the time of power control process.
Brief description of the drawings
Fig. 1 is a kind of flow chart for the Poewr control method that the embodiment of the present invention one is provided；
Fig. 2 is a kind of flow chart of modification user terminal power reference parameter in the embodiment of the present invention one；
Fig. 3 is a kind of flow chart of modification downlink path loss in the embodiment of the present invention one；
Fig. 4 is a kind of schematic diagram for the output control device that the embodiment of the present invention two is provided；
Fig. 5 is a kind of schematic diagram of parameters revision unit in Fig. 4；
Fig. 6 is another schematic diagram of parameters revision unit in Fig. 4；
Fig. 7 is another schematic diagram of parameters revision unit in Fig. 4；
Fig. 8 is a kind of schematic diagram of transmit power determining unit in Fig. 4；
Fig. 9 is another schematic diagram of transmit power determining unit in Fig. 4；
Figure 10 is another schematic diagram of transmit power determining unit in Fig. 4.
Embodiment
The present invention is described in further detail below by embodiment combination accompanying drawing.
Embodiment one：
For the purposes of the present invention, technical scheme and advantage are clearer, and the present embodiment will be with reference to accompanying drawing to this
The Poewr control method that invention is provided is further described, and specifically refer to Fig. 1：
S101, obtains the radio frequency unit number that cell combining is carried out in business configuration.
Under unconsolidated system, a cell corresponds to a remote radio unit (RRU), a remote radio unit (RRU)
It is connected on a baseband processing unit.But folding supports multiple under same baseband processing unit
Remote radio unit (RRU) constitutes a logic district, that is to say, that in its tangible radio frequency combination system, a base band
Processing unit is actually to have corresponded to multiple remote radio unit (RRU)s, this is done to reduce cell number, from
And effectively reduce interference, lifting network performance.
In radio frequency combination system, down direction is sent signal replication to multiple distal ends by far converging unit
On radio frequency unit；Up direction, remote radio unit (RRU) receive signal convergence unit carry out radio frequency merging after,
Baseband processing unit is sent to be demodulated.Due to during merging, each far-end radio frequency unit antenna port
Thermal noise linear superposition, for example, when N number of remote radio unit (RRU) is merged, its noise gain is 10*lg
(N) dB, compared to 10*lg (1) dB (i.e. the thermal noise gain of 0dB) in single remote radio unit (RRU) situation,
Which increase 10*lg (N) dB, namely signal-to-noise ratio degradation 10log (N) dB.Make in radio frequency combination system
Under, the signal to noise ratio of the signal that demodulating unit is received reach with demodulation threshold same in unconsolidated system, on
Row transmit power needs to lift 10log (N) dB.
So in order to obtain correct uplink transmission power, it is necessary to get the radio frequency list for carrying out cell combining
The number of member, and the mode for obtaining radio frequency unit number under a radio frequency combination system has a variety of, in this implementation
In example, the number that can directly obtain remote radio unit (RRU) in radio frequency combination system is closed as cell radio frequency is participated in
And radio frequency unit number.
S102, calculates radio frequency according to radio frequency unit number and merges gain.
Get after the radio frequency unit number that cell combining is participated in a certain radio frequency combination system, can direct root
According to formula：
Radio frequency merges gain=10*lg (N), and N represents radio frequency unit number；
Calculate the size that radio frequency merges gain.
S103, merges gain-boosted op amp uplink transmission power according to radio frequency and determines parameter.
S104, determines that parameter obtains target uplink transmission power according to revised power.
The direct purpose for obtaining radio frequency merging gain is to determine that parameter is modified to uplink transmission power, and then
Make obtained uplink transmission power closer to desired value, in the present embodiment, gain can be merged according to radio frequency
The parameter modified at least includes one in both user terminal power reference parameter and downlink path loss
It is individual, parameter is determined to how to change both above uplink transmission power respectively with reference to Fig. 2 and Fig. 3, and
How to determine that parameter is further calculated according to the uplink transmission power obtained after modification and obtain the up transmission work(of target
Rate is described in detail.
When it is user terminal power reference parameter that the uplink transmission power of modification, which determines parameter, incorporated by reference to Fig. 2：
S201, obtains original user terminal power basic parameter；
S202, merges gain progress read group total with radio frequency by original user terminal power basic parameter and is repaiied
User terminal power reference parameter after just.
Original user special parameter by radio resource controller (Radio Resource Control, RRC) determine,
It is to obtain revised user terminal power reference ginseng that the original user special parameter merges gain plus radio frequency
Number.It regard cell power basic parameter and the summation of revised user's special parameter as P0Following formula is substituted into,
Target uplink transmission power can be tried to achieve：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Semi-static power reference is represented, is the revised user terminal work(
Rate basic parameter and cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is
User terminal measurement downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and coding
Speed and the corresponding offset of modulation system；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；f(x)
Represent the function provided by high level.
When it is downlink path loss that the uplink transmission power of modification, which determines parameter, incorporated by reference to Fig. 3：
S301, obtains the received power value that user terminal receives reference signal；
S302, obtains the amendment transmission power level of reference signal；
S303, calculates with amendment transmission power level according to received power value and obtains revised downlink path loss.
The calculating of original downlink path loss is according to timesharing Long Term Evolution (Time Division Long Term
Evolution, TD-LTE) power control protocol regulation calculate obtain.Base station by way of broadcast to
Family terminal sends reference signal, and user terminal receives the reference signal, and the reference signal that calculation base station is sent
The difference of the reference signal received with user terminal, the difference is downlink path loss.Under above-mentioned calculating
Row path loss is under the premise merged based on cell without radio frequency, and situation about merging in cell radio frequency
Down, it is necessary to which radio frequency merges gain effects on the basis of obtained original downlink path loss, so asking for
Before target uplink transmission power, original downlink path loss is modified, under acquisition is revised
Row path loss must consider that radio frequency merges gain.In actual implementation process, in order to obtain it is revised under
Row path loss, the more commonly used mode is：It is P0 that baseband processing unit sends a power to user terminal
Reference signal RS, user terminal receives reference signal RS, it is assumed that the RS received power is P0 ',
The value of so original downlink path loss is P0-P0 '.But in the present embodiment, damaged calculating downlink path
When consumption, baseband processing unit tells the hair of its reference signal sent of user terminal by way of signaling
Penetrate performance number and merge gain sum with radio frequency for P0, it is to be understood that the ginseng that user terminal is apprised of here
The value for examining signal RS transmission power is actually amendment transmission power level, is P0+10*lg (N), RS's
The value for correcting actual emission power of the transmission power level than RS is big 10*lg (N).In this way, count
Obtained downlink path loss value is P0+10*lg (N)-P0 ', is increased than original downlink path loss
10*lg(N)。
Above-mentioned revised downlink path loss is substituted into as PL in following formula, you can try to achieve in target
Row transmit power：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Represent semi-static power reference, be user terminal power reference parameter with
Cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is described revised
Downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and code rate and modulation methods
The corresponding offset of formula；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；F (x) is represented by high level
The function provided.
In the case where merging without radio frequency, N=1, so, 10*lg (N)=0, now according to this reality
The radio frequency unit transmitting gain for applying the Poewr control method calculating acquisition of example offer is 0.Therefore, although propose this
The problem of Poewr control method in embodiment is to solve Power Control in radio frequency combination system, but it is true
On, this method also has the advantages that compatible unconsolidated system.
Embodiment two：
Mainly the output control device that the present invention is provided is explained in detail for the present embodiment.
As shown in figure 4, in the present embodiment, output control device 40 includes：Radio frequency merging acquiring unit 401,
Merge gain calculating unit 402, parameters revision unit 403 and transmit power determining unit 404.
Radio frequency, which merges acquiring unit 401, is used to obtain the radio frequency unit number that radio frequency merging is carried out in business configuration.
Under unconsolidated system, a cell corresponds to a remote radio unit (RRU), a remote radio unit (RRU)
It is connected on a baseband processing unit.Because folding supports multiple under same baseband processing unit
Remote radio unit (RRU) constitutes a logic district, that is to say, that in its tangible radio frequency combination system, a base band
Processing unit is actually to have corresponded to multiple cells and remote radio unit (RRU), and this is done to reduce cell
Number, so that effectively reduction interference, lifting network performance.
In radio frequency combination system, signal replication is sent to multiple distal ends by far converging unit and penetrated by down direction
On frequency unit；Up direction, remote radio unit (RRU) receive signal convergence unit carry out radio frequency merging after,
Baseband processing unit is sent to be demodulated.Due to during merging, each far-end radio frequency unit antenna
The thermal noise linear superposition of mouth, for example, when N number of remote radio unit (RRU) is merged, its noise gain is 10*lg
(N) dB, compared to 10*lg (1) dB (i.e. the thermal noise gain of 0dB) in single remote radio unit (RRU) situation,
Which increase 10*lg (N) dB, namely signal-to-noise ratio degradation 10*lg (N) dB.Make in radio frequency combination system
Under, the signal to noise ratio of the signal that demodulating unit is received reach with demodulation threshold same in unconsolidated system, on
Row transmit power needs to lift 10*lg (N) dB.
So in order to obtain correct uplink transmission power, radio frequency merges acquiring unit 401 and just has to obtain
To the number for the radio frequency unit for carrying out cell combining, and obtain the number of cell under a radio frequency combination system
Mode has a variety of, in the present embodiment, and radio frequency, which merges acquiring unit 401, can directly obtain radio frequency merging system
The number of remote radio unit (RRU) is used as the radio frequency unit number for participating in radio frequency merging in system.
Merge gain calculating unit 402 and radio frequency merging gain is calculated according to radio frequency unit number.Radio frequency, which merges, to be obtained
Take unit 401 to get after the number for the radio frequency unit for participating in cell combining in a certain radio frequency combination system, close
And gain calculating unit 402 can be directly according to formula：
Radio frequency merges gain=10*lg (N), and N represents radio frequency unit number；
Calculate the size that radio frequency merges gain.
It is to allow parameters revision unit 403 to merge gain calculating unit 402 to obtain radio frequency to merge the direct purpose of gain
Parameter, which is modified, to be determined to uplink transmission power, so make that transmit power determining unit 404 obtains it is up
Transmit power is closer to desired value.
Parameters revision unit 403, merges gain-boosted op amp uplink transmission power according to the radio frequency and determines parameter.Ginseng
Number amending unit 403 includes user terminal power reference parameters revision unit 4031 and downlink path loss amendment
At least one in unit 4032.
When parameters revision unit 403 only includes user terminal power reference parameters revision unit 4031, such as scheme
5, parameters revision unit 403 obtains original user terminal power base first with initial data acquisition module 40311
Quasi- parameter, original user special parameter is by radio resource controller (Radio Resource Control, RRC)
It is determined that, then the first correcting module 40312 is used to merge original user terminal power basic parameter with radio frequency
Gain carries out read group total and obtains revised user terminal power reference parameter.
The calculating of downlink path loss is according to timesharing Long Term Evolution (Time Division Long Term
Evolution, TD-LTE) power control protocol regulation calculate obtain.Base station by way of broadcast to
Family terminal sends reference signal, and user terminal receives the reference signal, and the reference signal that calculation base station is sent
The difference of the reference signal received with user terminal, the difference is downlink path loss.Under above-mentioned calculating
Row path loss is under the premise merged based on cell without radio frequency, and situation about merging in cell radio frequency
Down, it is necessary to further consider that radio frequency merges gain effects on the basis of obtained original downlink path loss,
So before target uplink transmission power is asked for, to be modified to original downlink path loss, obtain
Revised downlink path loss must consider that radio frequency merges gain.
When only including downlink path loss amending unit 4032 in parameters revision unit 403, Fig. 6 refer to
Shown downlink path loss amending unit 4032, downlink path loss amending unit 4032 includes receiving power
It is worth acquisition module 40321, amendment transmission power level acquisition module 40322 and the second correcting module 40323, its
Middle received power value acquisition module 40321 is used to obtain the received power value that user terminal receives reference signal；
Amendment transmission power level acquisition module 40322 is used for the amendment transmission power level for obtaining reference signal；Second repaiies
Positive module 40323 calculates according to received power value and amendment transmission power level and obtains revised downlink path damage
Consumption.
In actual implementation process, in order to allow the second correcting module 40323 according to received power value and amendment
Transmission power level calculates and obtains revised downlink path loss, and the more commonly used mode is：Base-Band Processing list
Member sends the reference signal RS that a power is P0 to user terminal, and user terminal receives reference signal RS,
Assuming that the RS received power is P0 '；The value of so original downlink path loss is P0-P0 ', but
In the present embodiment, because baseband processing unit tells the user terminal reference that it sends letter by way of signaling
Number transmission power level merge gain sum with radio frequency for P0, it is to be understood that user terminal is obtained here
The RS value of transmission power be actually amendment transmission power level, the reality of the amendment transmission power level than RS
The value of border transmission power is big 10*lg (N), that is, that corrects that transmission power level acquisition module 40322 gets repaiies
Positive transmission power level is P0+10*lg (N), the user terminal that received power value acquisition module 40321 is got
The received power value for receiving reference signal is P0 ', at this moment, and the second correcting module 40323 is calculated and obtained down
Row path loss values are P0+10*lg (N)-P0 ', and 10*lg (N) is increased than original downlink path loss,
This namely revised downlink path loss.
When parameters revision unit 403 includes user terminal power reference parameters revision unit 4031, work(is sent
Rate determining unit 404 at least includes the first power computation module 4041, please further combined with Fig. 8, the first work(
Rate computing module 4041 regard cell power basic parameter and the summation of revised user's special parameter as P0Substitute into
Following formula, you can try to achieve target uplink transmission power：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Semi-static power reference is represented, is the revised user terminal work(
Rate basic parameter and cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is
User terminal measurement downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and coding
Speed and the corresponding offset of modulation system；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；f(x)
Represent the function provided by high level.
When parameters revision unit 403 includes downlink path loss amending unit 4032, Fig. 9 is refer to, is sent out
Sending power determining unit 404 at least includes the second power computation module 4042, the second power computation module 4042
Above-mentioned revised downlink path loss is substituted into as PL in following formula, you can try to achieve the up hair of target
Send power：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Represent semi-static power reference, be user terminal power reference parameter with
Cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is described revised
Downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and code rate and modulation methods
The corresponding offset of formula；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；F (x) is represented by high level
The function provided.
It is understood that above-mentioned parameter amending unit 403 can join comprising user terminal power reference simultaneously
Number amending unit 4031 and downlink path loss amending unit 4032, such as Fig. 7.Similarly, transmit power is true
Order member 404 can include the first power computation module 4041 and the second power computation module 4042 simultaneously, such as
Figure 10.
In the case where merging without radio frequency, N=1, so, 10*lg (N)=0, therefore, this implementation
The output control device that example is provided is applied in unconsolidated system, and it is 0 to calculate the downlink gain obtained.Cause
This, although propose that the output control device 40 in the present embodiment is equally applicable to control upper in unconsolidated system
Row transmission power.
The output control device 40 that the present embodiment is provided can be arranged on base station, user terminal or any 3rd
On method, apparatus, the uplink transmission power of user terminal is controlled.
Embodiment three：
The present embodiment provides a kind of base station, and the base station includes the output control device in embodiment two.
Because base station includes above-mentioned output control device, so the base station is after uplink transmission power is determined,
The information of power can be sent to user terminal, allow user terminal according to the uplink transmission power of its determination to end
End sends information.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to recognized
The specific implementation of the fixed present invention is confined to these explanations.For the ordinary skill of the technical field of the invention
For personnel, without departing from the inventive concept of the premise, some simple deduction or replace can also be made,
Protection scope of the present invention should be all considered as belonging to.
Claims (15)
1. a kind of Poewr control method, it is characterised in that including：
Obtain the radio frequency unit number that cell combining is carried out in business configuration；
Radio frequency is calculated according to the radio frequency unit number and merges gain；
Gain-boosted op amp uplink transmission power is merged according to the radio frequency and determines parameter；
Determine that parameter obtains target uplink transmission power according to revised power.
2. Poewr control method as claimed in claim 1, it is characterised in that the power determines ginseng
Number includes at least one in user terminal power reference parameter and downlink path loss.
3. Poewr control method as claimed in claim 2, it is characterised in that the power determines ginseng
When number includes the user terminal power reference parameter, correcting the user terminal power reference parameter includes：
Obtain original user terminal power basic parameter；
The original user terminal power basic parameter is merged into gain progress read group total with the radio frequency to obtain
Revised user terminal power reference parameter.
4. Poewr control method as claimed in claim 3, it is characterised in that used according to revised
Family terminal power basic parameter, which obtains target uplink transmission power, to be included：
The target uplink transmission power is obtained according to uplink transmission power computing formula as follows：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Semi-static power reference is represented, is the revised user terminal work(
Rate basic parameter and cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is
User terminal measurement downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and coding
Speed and the corresponding offset of modulation system；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；f(x)
Represent the function provided by high level.
5. Poewr control method as claimed in claim 2, it is characterised in that the power determines ginseng
When number includes the downlink path loss, correcting the downlink path loss includes：
Obtain the received power value that user terminal receives reference signal；
The amendment transmission power level of the reference signal is obtained, the amendment transmission power level is to be described with reference to letter
Number actual emission power value merge gain sum with the radio frequency；
Calculated according to the received power value with the amendment transmission power level and obtain revised downlink path damage
Consumption.
6. Poewr control method as claimed in claim 5, it is characterised in that under revised
Row path loss, which obtains target uplink transmission power, to be included：
The target uplink transmission power is obtained according to uplink transmission power computing formula as follows：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Represent semi-static power reference, be user terminal power reference parameter with
Cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is described revised
Downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and code rate and modulation methods
The corresponding offset of formula；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；F (x) is represented by high level
The function provided.
7. the Poewr control method as described in claim any one of 1-6, it is characterised in that according to institute
State radio frequency unit number and calculate radio frequency merging gain including according to formula：
Radio frequency merges gain=10*1g (N), and N is the radio frequency unit number；
Calculating obtains the radio frequency and merges gain.
8. a kind of output control device, it is characterised in that including：
Radio frequency merges acquiring unit, carries out the radio frequency unit number of cell combining in business configuration for obtaining；
Merge gain calculating unit, merge gain for calculating radio frequency according to the radio frequency unit number；
Parameters revision unit, parameter is determined for merging gain-boosted op amp uplink transmission power according to the radio frequency；
Transmit power determining unit, for determining that parameter obtains the up transmission work(of target according to revised power
Rate.
9. output control device as claimed in claim 8, it is characterised in that the parameters revision list
Member is included in user terminal power reference parameters revision unit and downlink path loss amending unit two at least
One.
10. output control device as claimed in claim 9, it is characterised in that the user terminal work(
Rate basic parameter amending unit is used to correct user terminal power reference parameter；It includes：
Initial data acquisition module, for obtaining original user terminal power basic parameter；
First correcting module, for the original user terminal power basic parameter to be merged into increasing with the radio frequency
Benefit carries out read group total and obtains revised user terminal power reference parameter.
11. output control device as claimed in claim 10, it is characterised in that the transmit power is true
Order member includes the first power computation module, and first power computation module is used for according to revised user
Terminal power basic parameter obtains target uplink transmission power, specifically includes according to up transmission as follows
Rating formula obtains the target uplink transmission power：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Semi-static power reference is represented, is the revised user terminal work(
Rate basic parameter and cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is
User terminal measurement downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and coding
Speed and the corresponding offset of modulation system；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；f(x)
Represent the function provided by high level.
12. output control device as claimed in claim 9, it is characterised in that the downlink path is damaged
Consumption amending unit is used to correct downlink path loss, and it includes：
Received power value acquisition module, the received power value of reference signal is received for obtaining user terminal；
Correct transmission power level acquisition module, the amendment transmission power level for obtaining the reference signal, institute
State amendment transmission power level for the reference signal actual emission power value merge with the radio frequency gain it
With；
Second correcting module, is obtained for being calculated according to the received power value with the amendment transmission power level
Revised downlink path loss.
13. output control device as claimed in claim 12, it is characterised in that the transmit power is true
Order member includes the second power computation module, and second power computation module is used for according to revised descending
Path loss obtains target uplink transmission power, specifically includes according to uplink transmission power calculating as follows
Formula obtains the target uplink transmission power：
P=min { Pmax, 10logM+P0+αPL+Δmcs+f(Δi)}；
P is target uplink transmission power；PmaxFor the maximum transmission power of user terminal；M is to distribute to the use
The fast quantity of ascending resource of family terminal；P0Represent semi-static power reference, be user terminal power reference parameter with
Cell power basic parameter sum；α is the specific path loss penalty coefficient of cell；PL is described revised
Downlink path loss；ΔmcsSpecial parameter is specified for radio resource controller, is and code rate and modulation methods
The corresponding offset of formula；ΔiFor the specific transmission power control Closed-cycle correction coefficient of cell；F (x) is represented by height
The function that layer is provided.
14. the output control device as described in claim any one of 8-13, it is characterised in that described to make an uproar
Acoustic gain computing unit calculates radio frequency according to the radio frequency unit number and merges gain including according to formula：
Radio frequency merges gain=10*1g (N), and N is the radio frequency unit number；
Calculating obtains the radio frequency and merges gain.
15. a kind of base station, it is characterised in that including the power control as described in claim any one of 8-14
Device processed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006134.3A CN106941714B (en) | 2016-01-05 | 2016-01-05 | Power control method, device and base station |
| PCT/CN2016/098220 WO2017118068A1 (en) | 2016-01-05 | 2016-09-06 | Power control method, device, and base station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006134.3A CN106941714B (en) | 2016-01-05 | 2016-01-05 | Power control method, device and base station |
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| CN106941714B CN106941714B (en) | 2021-05-04 |
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| CN113114386B (en) * | 2021-03-31 | 2023-07-04 | 北京万集科技股份有限公司 | Radio frequency parameter monitoring and early warning method and device for road side unit |
| CN113382045B (en) * | 2021-05-27 | 2022-10-14 | 深圳丹皓电子科技有限公司 | Sensing unit with information processing function based on Internet of things |
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| WO2017118068A1 (en) | 2017-07-13 |
| CN106941714B (en) | 2021-05-04 |
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