CN103582096B - A kind of close-loop power controlling method and device - Google Patents
A kind of close-loop power controlling method and device Download PDFInfo
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- CN103582096B CN103582096B CN201210276319.8A CN201210276319A CN103582096B CN 103582096 B CN103582096 B CN 103582096B CN 201210276319 A CN201210276319 A CN 201210276319A CN 103582096 B CN103582096 B CN 103582096B
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Abstract
The embodiment of the present invention provides close-loop power controlling method and device, with precise control UE uplink transmission powers, improves the transmission quality of UE.The method includes：Physical Uplink Shared Channel receiving power, the power headroom of user equipment to report and the up path loss smoothing factor of base station side according to user equipment uplink, the path loss of estimation user equipment uplink experience；By reading the closed power information of user equipment and according to the path loss of estimation, obtaining the target transmit power of user equipment；Target transmit power according to user equipment, calculates the difference of the target transmit power of user equipment and the actual transmission power of user equipment, and the uplink transmission power of user equipment is compensated with difference.The present invention is in base station side by estimating the error that user equipment transmit power is present, carry out power back-off and adjust open loop power in a more rational level, the TPC command lost or misexplain can be compensated, also avoid issuing invalid closed loop power control command.
Description
Technical field
The present invention relates to moving communicating field, more particularly to a kind of close-loop power controlling method and device.
Background technology
Uplink transmission power in GSM needs to obtain balance at two aspects, i.e. transmit power reaches full
The certain service quality of foot（Quality of Service, QoS）It is required that bit send energy and as far as possible reduce in system
The interference of other users.The mutually restriction of two above aspect, meets qos requirement and is accomplished by larger uplink transmission power, and subtracts
Few interference to other users in system then requires that uplink transmission power is smaller, and coordination between the two depends on selected system
Target.
Long Term Evolution（Long Term Evolution, LTE）In system and other communication systems based on LTE technologies, on
Row power control mechanism applies the Power Control that open Loop Power control and close-loop power control based on path loss compensation are combined
Device, wherein, open loop power control belongs to rough control based on path loss is come coordinates interference and meets QoS, and close-loop power control is in open loop
Precise control is carried out on the basis of Power Control.
For the i-th subframe, user equipment（User Equipment, UE）Physically row shared channel（Physical
Uplink Shared Channel, PUSCH）Transmit power PPUSCH(i)（Unit is dBm）It is calculated as follows：
PPUSCH(i)=min{PCMAX,10log10(MPUSCH(i))+PO_PUSCH(j)+α(j)·PL+ΔTF(i)+f(i)}
Wherein, PCMAXRepresent UE maximum transmit powers, the parameter of high-level signaling configuration, usually 23dBm or so；MPUSCH
I () represents the bandwidth shared by PUSCH；PO_PUSCH(j)=PO_NOMINALPUSCH(j)+PO_UE_PUSCH(j), PO_NOMINALPUSCH(j) and
PO_UE_PUSCHJ () is the parameter of high-level signaling configuration, and with the different PUSCH transmission represented by j values meaning without
Together.J=0 represents PUSCH transmission or the re-transmission of semi-static mandate, and j=1 represents PUSCH transmission or the re-transmission of dynamic authorization, j=2
PUSCH transmission or the re-transmission of accidental access response mandate are represented, now PO_NOMINAL_PUSCH(2)=PO_PRE+ΔPREAMBLE_Msg3,
PO_UE_PUSCH(2)=0, wherein, P0_PREAnd ΔPREAMBLE_Msg3Configured by high-level signaling；α (j) expressed portion branch loss compensation factors,
The parameter of high-level signaling configuration, and it is different with the meaning of the represented different PUSCH transmission of j values, as j=0 or 1,
A ∈ { 0,0.4,0.5,0.6,0.7,0.8,0.9,1 }, as j=2, α=1；PL represents descending path loss estimate；ΔTFI () is anti-
The modulation system that UE is used is reflected, when up channel change is slow or considers the reasons, base station sets such as UE transfer resources are limited
The modulation coding mode of UE（Modulation Coding Scheme, MCS）Grade, the grade passes through parameter, ΔTFI () controls
The transmit power of UE；F (i) is controlled with the transmit power for authorizing（Transmit Power Control, TPC）Order is relevant,
Support two kinds of computing devices of accumulation type and absolute type, under accumulation type device, f (i)=f (i-1)+δPUSCH(i-KPUSCH), exhausted
To under type device, f (i)=δPUSCH(i-KPUSCH), wherein, variable δPUSCH(i-KPUSCH) authorize the TPC for carrying to order by the last time
Order decision, KPUSCHIt is the time interval of system configuration, and i-KPUSCHRepresent the last mandate institute related to present sub-frame i
Subframe.
In addition to open Loop Power control, the bag the reason for carrying out close-loop power control to UE on the basis of open Loop Power control
Include：The power amplifier of UE is not accurate enough, and actual transmission power can be varied from the growth of time；The path loss that UE estimates may
There is deviation or changed with the movement of UE；Inter-cell interference can also be changed, and this change may be drawn by the movement of UE
Hair changes initiation by the load of neighbor cell（Especially when UE is in cell edge, its influence to inter-cell interference is more
Plus it is prominent）, etc..
The close-loop power controlling method that prior art is provided is in strict accordance with PPUSCHThe calculating formula of (i), by control wherein
MPUSCH(i)、ΔTFI () these three parameters are carried out with f (i), MPUSCH(i)、ΔTFI () and f (i) are determined by scheduling authorization, reflected
Be power adjustment of each subframe base station to UE.In above-mentioned close-loop power controlling method, base station is calculated based on ideal situation
The closed-loop power control order of current radio frames, i.e. it is not intended that the deviation estimated due to UE path losses, the influence of device power amplifier performance or
The TPC command that base station issues may thus result in UE actual transmission powers and be there may be with calculated value by originals such as terminal solution mistakes
Deviation.
Therefore, at least there are following defects in the close-loop power controlling method that above-mentioned prior art is provided：
1）The path loss that not inaccurate to terminal power amplifier or terminal is estimated has deviation targetedly to be compensated, and causes open loop
Power control has deviation, and close-loop power control is adjusted on the basis of open Loop Power control and there is also error in itself；
2）It is unstable due to transmission link, it may occur however that TPC command is misexplained, and causes the power of base station and UE both sides to be believed
Breath is safeguarded inconsistent so that the close-loop power control of base station has error.
The content of the invention
The embodiment of the present invention provides a kind of close-loop power controlling method and device, with precise control UE uplink transmission powers,
Improve the transmission quality of UE.
The embodiment of the present invention provides a kind of close-loop power controlling method, and methods described includes：
Physical Uplink Shared Channel receiving power, the power of the user equipment to report according to user equipment uplink
Surplus and the up path loss smoothing factor of base station side, estimate the path loss of the user equipment uplink experience；
By reading the closed power information of the user equipment and according to the path loss of the estimation, obtaining the user and set
Standby target transmit power；
Target transmit power according to the user equipment, calculates the target transmit power and the use of the user equipment
The difference of the actual transmission power of family equipment, the uplink transmission power of the user equipment is compensated with the difference.
The embodiment of the present invention provides a kind of closed-loop power control device, and described device includes：
Path loss estimation block, for the Physical Uplink Shared Channel receiving power according to user equipment uplink, described
The up path loss smoothing factor of power headroom and base station side of user equipment to report, estimates the user equipment uplink experience
Path loss；
Acquisition module, for by reading the closed power information of the user equipment and according to the path loss of the estimation,
Obtain the target transmit power of the user equipment；
Difference calculating module, for the target transmit power according to the user equipment, calculates the mesh of the user equipment
Mark transmit power and the difference of the actual transmission power of the user equipment, the up of the user equipment is compensated with the difference
Transmit power.
Knowable to the embodiments of the present invention, due to can be by reading the closed power information of user equipment and according to estimating
The path loss of the user equipment uplink experience for calculating, obtains the target transmit power of the user equipment, according to the user
The target transmit power of equipment, calculates the target transmit power of the user equipment and the actual transmission power of the user equipment
Difference.Therefore, compared with the close-loop power controlling method that prior art is provided, Radio Resource provided in an embodiment of the present invention is adjusted
Degree method, in base station side by estimating the error that user equipment transmit power is present, carries out power back-off and adjusts open loop power
In a more rational level, the TPC command lost or misexplain can be compensated, also avoid issuing invalid closed loop work(
Rate control command.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be in prior art or embodiment description
The required accompanying drawing for using is briefly described, it should be apparent that, drawings in the following description are only some realities of the invention
Example is applied, for those skilled in the art, other accompanying drawings can also be obtained such as these accompanying drawings.
Fig. 1 is close-loop power controlling method schematic flow sheet provided in an embodiment of the present invention；
Fig. 2 is closed-loop power control device structural representation provided in an embodiment of the present invention；
Fig. 3 is the closed-loop power control device structural representation that another embodiment of the present invention is provided；
Fig. 4 is the closed-loop power control device structural representation that another embodiment of the present invention is provided；
Fig. 5 is the closed-loop power control device structural representation that another embodiment of the present invention is provided.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those skilled in the art are obtained, belongs to the scope of protection of the invention.
Accompanying drawing 1 is referred to, is close-loop power controlling method schematic flow sheet provided in an embodiment of the present invention.The example of accompanying drawing 1
The executive agent of method can be base station or base station controller in GSM, mainly include step S101, step
S102 and step S103：
S101, Physical Uplink Shared Channel receiving power, the user equipment to report according to user equipment uplink
Power headroom and the up path loss smoothing factor of base station side, estimate the path loss of user equipment uplink experience.
In embodiments of the present invention, base station side safeguards a Physical Uplink Shared Channel（Physical Uplink
Shared Channel, PUSCH）Receiving power memory, the PUSCH receiving powers for recording user equipment uplink,
The PUSCH receiving powers of user equipment uplink can be obtained by each radio frames to PUSCH measurements.
User equipment to report power headroom（Power Headroom, PH）, actually it is also that triggering base station side calculates described
The target transmit power of user equipment and the process of the difference of the actual transmission power of the user equipment.When base station receives user
After the power headroom that equipment is reported, the difference of maximum transmission power and the power headroom of the user equipment to report is asked for, take this
Individual difference and the actual transmission power that the minimum value of maximum transmission power is exactly the user equipment.In order to be described below conveniently,
Power headroom represents that the target transmit power of user equipment uses P using PHtx_pusch_tarRepresent, the actual transmission of user equipment
Power uses Ptx_puschRepresent, the PUSCH receiving powers of user equipment uplink use Prv_puschRepresent, maximum transmitted work(
Rate uses PmaxRepresent, so, Ptx_pusch=min{Pmax- PH, Pmax}。
The PUSCH that user equipment uplink described in the PUSCH receiving power memories that it is safeguarded is read in base station is received
Power is Prv_pusch, then, according to formula PL=(1- β) PLfore+β·(Ptx_pusch-Prv_pusch) the estimation user equipment
The path loss of uplink experience, herein, PL is the path loss of the user equipment uplink experience, and β is flat for the up PL of base station side
The sliding factor, PLforeTo be the up PL of last base station side renewal, its initial value is Ptx_pusch- Prv_pusch, Ptx_puschFor institute
State the actual transmission power of user equipment, Prv_puschFor the Physical Uplink Shared Channel of the user equipment uplink receives work(
Rate.
S102, by reading the closed power information of the user equipment and according to the path loss of the estimation, obtaining described
The target transmit power of user equipment.
In embodiments of the present invention, base station side safeguards a closed power information-storing device, for record and user equipment
The related closed power information of the PUSCH transmit powers of uplink, it includes the last TPC command for authorizing in base station, uses
Family equipment accumulation transmitting power control（Transmit Power Control, TPC）Information or user equipment absolute transmission power
Control（Transmit Power Control, TPC）Information etc., wherein, user equipment accumulation TPC information or user equipment are exhausted
TPC information can be closed by base station according to the last TPC command for authorizing, the sequential of the mandate-feedback-data transfer of system
The user equipment accumulation TPC information or the absolute TPC information inferences of user equipment of system and last record are obtained.
As the present invention by read the user equipment closed power information and according to the path loss of the estimation obtain
One embodiment of the target transmit power of the user equipment, base station side can read the closed power information Store of its maintenance
The transmitting power control TPC information of user equipment accumulation described in device, then, compares maximum transmission power PmaxWith P0+ α × PL+
10log10M+ΔTF+TPCaccumu_UESize, take PmaxWith P0+ α × PL+10log10M+ΔTF+TPCaccumu_UEIn minimum value
As the target transmit power of the user equipment, i.e. Ptx_pusch_tar=min{Pmax, P0+ α × PL+10log10M+ΔTF+
TPCaccumu_UE, herein, P0 is the benchmark received power value of the Physical Uplink Shared Channel of the user equipment uplink, α
It is part road loss compensation factor, PL is the path loss of the user equipment uplink experience, and M is the user equipment uplink
The sub-band number of occupancy, ΔTFIt is to be adopted by the peculiar parameter Ks of user equipment and the user equipment uplink of high-level signaling configuration
The parameter that modulation coding mode is determined, TPCaccumu_UEAs described user equipment accumulation transmitting power control TPC information.
As the present invention by read the user equipment closed power information and according to the path loss of the estimation obtain
Another embodiment of the target transmit power of the user equipment, base station side can read the closed power information Store of its maintenance
User equipment absolute transmission power described in device controls TPC information, then, compares maximum transmission power PmaxWith P0+ α × PL+
10log10M+ΔTF+TPCabsolute_UESize, take PmaxWith P0+ α × PL+10log10M+ΔTF+TPCabsolute_UEIn most
It is small to be worth as the target transmit power of the user equipment, i.e. Ptx_pusch_tar=min{Pmax, P0+ α × PL+10log10M+ΔTF+
TPCabsolute_UE, herein, P0It is the benchmark received power value of the Physical Uplink Shared Channel of the user equipment uplink, α
It is part road loss compensation factor, PL is the path loss of the user equipment uplink experience, and M is the user equipment uplink
The sub-band number of occupancy, ΔTFIt is to be adopted by the peculiar parameter Ks of user equipment and the user equipment uplink of high-level signaling configuration
The parameter that modulation coding mode is determined, TPCabsolute_UEThat is user equipment described in l definitely passes Power Control TPC information.
S103, the target transmit power according to the user equipment, calculate the target transmit power of the user equipment with
The difference of the actual transmission power of the user equipment, the uplink transmission power of the user equipment is compensated with the difference.
The target transmit power of user equipment is Δ P with the difference of the actual transmission power of the user equipmenttx_pusch=
Ptx_pusch_tar-Ptx_pusch.The target transmit power of the user equipment and the actual hair of the user equipment are calculated in base station side
Send the difference DELTA P of powertx_puschAfterwards, you can with the difference DELTA Ptx_puschThe uplink transmission power of the user equipment is compensated,
Including using the difference DELTA Ptx_puschTo target Signal to Interference plus Noise Ratio（Signal to Interference plus Noise
Ratio, SINR）It is modified, for example, being superimposed upon on the target SINR for calculating, target SINR is adjusted to one correctly
Operating point, and further measurement SINR being adjusted on target SINR, can both make up power error, at the same also avoid issuing it is invalid
Closed loop power control command.
Knowable to the close-loop power control that the embodiments of the present invention are provided, due to can be by reading closing for user equipment
Ring power information and the path loss experienced according to the user equipment uplink for estimating, the target for obtaining the user equipment send
Power, the target transmit power according to the user equipment calculates the target transmit power of the user equipment and the user
The difference of the actual transmission power of equipment.Therefore, compared with the close-loop power controlling method that prior art is provided, the present invention is implemented
The scheduling method for wireless resource that example is provided, in base station side by estimating the error that user equipment transmit power is present, carries out power
Open loop power is compensated and adjusted in a more rational level, the TPC command lost or misexplain can be compensated, also kept away
Exempt to issue invalid closed loop power control command.
Accompanying drawing 2 is referred to, is closed-loop power control device structural representation provided in an embodiment of the present invention.For the ease of saying
It is bright, illustrate only the part related to the embodiment of the present invention.The closed-loop power control device of the example of accompanying drawing 2 can be mobile logical
The base station of letter system, base station controller or base station, the One function unit of base station controller, it include path loss estimation block 201,
Acquisition module 202 and difference calculating module 203, wherein：
Path loss estimation block 201, for the Physical Uplink Shared Channel receiving power according to user equipment uplink, institute
The up path loss smoothing factor of power headroom and base station side of user equipment to report is stated, the user equipment uplink experience is estimated
Path loss.
In the present embodiment, base station side safeguards a Physical Uplink Shared Channel（Physical Uplink Shared
Channel, PUSCH）Receiving power memory, the PUSCH receiving powers for recording user equipment uplink, user equipment
The PUSCH receiving powers of uplink can be obtained by each radio frames to PUSCH measurements.
Acquisition module 202, for by reading the closed power information of the user equipment and according to the road of the estimation
Damage, obtain the target transmit power of the user equipment.
Difference calculating module 203, for the target transmit power according to the user equipment, calculates the user equipment
Target transmit power and the difference of the actual transmission power of the user equipment, the upper of the user equipment is compensated with the difference
Row transmit power.
It should be noted that in the implementation method of above closed-loop power control device, the division of each functional module is only to lift
Example explanation, can as needed in practical application, such as the convenient consideration of the realization of the configuration requirement or software of corresponding hardware,
And above-mentioned functions distribution is completed by different functional module, will the internal structure of the closed-loop power control device be divided into
Different functional module, to complete all or part of function described above.And, in practical application, in the present embodiment
Corresponding functional module can be realized by corresponding hardware, it is also possible to perform corresponding software by corresponding hardware and complete, example
Such as, foregoing path loss estimation block, can have to perform the shared letter of the foregoing physical uplink according to user equipment uplink
Road receiving power, the power headroom of the user equipment to report and the up path loss smoothing factor of base station side, estimate that the user sets
The hardware of the path loss of standby uplink experience, for example path loss estimator, or be able to carry out corresponding computer program so as to
Complete the general processor or other hardware devices of foregoing function；Difference calculating module as the aforementioned, can have to hold again
The foregoing target transmit power according to the user equipment of row, calculates the target transmit power of the user equipment and the user
The difference of the actual transmission power of equipment, the hardware of the uplink transmission power function of the user equipment is compensated with the difference,
Such as difference calculator, or be able to carry out corresponding computer program so as to processor completing foregoing function or
Other hardware devices（Each embodiment that this specification is provided can all apply foregoing description principle）.
The path loss estimation block 201 of the example of accompanying drawing 2 may further include difference and ask for unit 301, the and of reading unit 302
Computing unit 303, the closed-loop power control device that another embodiment of the present invention is provided as shown in Figure 3, wherein：
Difference asks for unit 301, the difference for asking for maximum transmission power and the power headroom of the user equipment to report
Value, takes the actual transmission power that the difference is worth to the user equipment with the minimum of maximum transmission power.
Reading unit 302, the Physical Uplink Shared Channel receiving power for reading the user equipment uplink.
Computing unit 303, for according to formula PL=(1- β) PLfore+β·(Ptx_pusch-Prv_pusch) the estimation use
The path loss of family equipment uplink experience, the PL is the path loss of the user equipment uplink experience, and the β is base station side
Up PL smoothing factors, the PLforeTo be up PL, the P that last base station side updatestx_puschIt is the user equipment
Actual transmission power, the Prv_puschIt is the Physical Uplink Shared Channel receiving power of the user equipment uplink.
In the closed-loop power control device of the example of accompanying drawing 2, user equipment to report power headroom（Power Headroom,
PH）, actually it is also to trigger base station side to calculate the target transmit power of the user equipment and the actual hair of the user equipment
Send the process of the difference of power.After base station receives the power headroom of user equipment to report, difference asks for unit 301 and asks for maximum
The difference of transimission power and the power headroom of the user equipment to report, takes the minimum value of this difference and maximum transmission power just
It is the actual transmission power of the user equipment.In order to be described below conveniently, power headroom is represented using PH, the mesh of user equipment
Mark transmit power uses Ptx_pusch_tarRepresent, the actual transmission power of user equipment uses Ptx_puschRepresent, user equipment is up
The PUSCH receiving powers of transmission use Prv_puschRepresent, maximum transmission power uses PmaxRepresent, so, Ptx_pusch=min
{Pmax- PH, Pmax}。
User equipment uplink described in the PUSCH receiving power memories of the reading base station maintenance of reading unit 302
PUSCH receiving powers are Prv_pusch, then, computing unit 303 is according to formula PL=(1- β) PLfore+β·(Ptx_pusch-
Prv_pusch) path loss that the user equipment uplink is experienced is estimated, herein, PL is the user equipment uplink experience
Path loss, β is the up PL smoothing factors of base station side, PLforeTo be up PL that last base station side updates, its initial value is
Ptx_pusch- Prv_pusch, Ptx_puschIt is the actual transmission power of the user equipment, Prv_puschIt is the up biography of the user equipment
Defeated Physical Uplink Shared Channel receiving power.
In the closed-loop power control device of the example of accompanying drawing 2, base station side safeguards a closed power information-storing device, is used for
The record closed power information related to the PUSCH transmit powers of user equipment uplink, it includes that base station the last time awards
The TPC information of power, user equipment accumulation transmitting power control（Transmit Power Control, TPC）Information or user set
Standby absolute transmission power control（Transmit Power Control, TPC）Information etc., wherein, user equipment accumulation TPC letters
Breath or the absolute TPC information of user equipment can be by base stations according to the last TPC command for authorizing, the mandate-feedback-number of system
TPC information or the absolute TPC information inferences of user equipment are accumulated according to the sequential relationship of transmission and the user equipment of last record
Obtain.
If the closed power information that the acquisition module 201 of the example of accompanying drawing 2 reads described user equipment includes the user
Equipment accumulation transmitting power control（Transmit Power Control, TPC）Information, the acquisition module 202 of the example of accompanying drawing 2 can
To further include the first reading unit 401 and first acquisition unit 402, another embodiment of the present invention is provided as shown in Figure 4
Closed-loop power control device, wherein：
First reading unit 401, for reading the user equipment accumulation transmitting power control TPC information；
First acquisition unit 402, for taking maximum transmission power and P0+ α × PL+10log10M+ΔTF+TPCaccumu_UEIn
Minimum value as the user equipment target transmit power, the P0It is the physical uplink of the user equipment uplink
The benchmark received power value of shared channel, the α is part road loss compensation factor, and the PL is the user equipment uplink
The path loss of experience, the M is the sub-band number that the user equipment uplink takes, the ΔTFIt is to be configured by high-level signaling
The parameter that the modulation coding mode that the peculiar parameter Ks of user equipment and the user equipment uplink are used is determined, it is described
TPCaccumu_UEIt is the user equipment accumulation transmitting power control TPC information.
If the closed power information that the acquisition module 201 of the example of accompanying drawing 2 reads described user equipment includes the user
Equipment absolute transmission power is controlled（Transmit Power Control, TPC）Information, the acquisition module 202 of the example of accompanying drawing 2 can
To further include the second reading unit 501 and second acquisition unit 502, another embodiment of the present invention is provided as shown in Figure 5
Closed-loop power control device, wherein：
Second reading unit 501, for reading the user equipment absolute transmission power control TPC information；
Second acquisition unit 502, for taking maximum transmission power and P0+ α × PL+10log10M+ΔTF+TPCabsolute_UE
In minimum value as the user equipment target transmit power, the P0For the user equipment uplink physically
The benchmark received power value of row shared channel, the α is part road loss compensation factor, and the PL is the up biography of the user equipment
The path loss of defeated experience, the M is the sub-band number that the user equipment uplink takes, the ΔTFIt is to be configured by high-level signaling
The peculiar parameter Ks of user equipment and the user equipment uplink use modulation coding mode determine parameter, it is described
TPCabsolute_UEFor the user equipment absolute transmission power controls TPC information.
Above-mentioned accompanying drawing 2 to the difference calculating module 203 of any one example of accompanying drawing 5 is additionally operable to believe target according to the difference
It is dry to make an uproar than being modified.For example, being superimposed upon on the target SINR for calculating, target SINR is adjusted to a correct job
Point, and further will measurement SINR be adjusted on target SINR, power error can be both made up, while also avoiding issuing invalid closing
Ring power control command.
It should be noted that the content such as information exchange, implementation procedure between each module/unit of said apparatus, due to
Apparatus of the present invention embodiment is based on same design, and the technique effect that it brings is identical with apparatus of the present invention embodiment, particular content
Reference can be made to the narration in apparatus of the present invention embodiment, here is omitted.
One of ordinary skill in the art will appreciate that all or part of step in the various devices of above-described embodiment is can
Completed with instructing the hardware of correlation by program, such as one or more or whole of following various devices：
Physical Uplink Shared Channel receiving power, the power of the user equipment to report according to user equipment uplink
Surplus and the up path loss smoothing factor of base station side, estimate the path loss of the user equipment uplink experience；
By reading the closed power information of the user equipment and according to the path loss of the estimation, obtaining the user and set
Standby target transmit power；
Target transmit power according to the user equipment, calculates the target transmit power and the use of the user equipment
The difference of the actual transmission power of family equipment, the uplink transmission power of the user equipment is compensated with the difference.
One of ordinary skill in the art will appreciate that all or part of step in the various devices of above-described embodiment is can
Completed with instructing the hardware of correlation by program, the program can be stored in a computer-readable recording medium, storage
Medium can include：Read-only storage（ROM, Read Only Memory）, random access memory（RAM, Random
Access Memory）, disk or CD etc..
A kind of close-loop power controlling method provided in an embodiment of the present invention and device are described in detail above, herein
In apply specific case principle of the invention and implementation method be set forth, the explanation of above example is only intended to side
Assistant solves device of the invention and its core concept；Simultaneously for those of ordinary skill in the art, according to think of of the invention
Think, will change in specific embodiments and applications, in sum, it is right that this specification content should not be construed as
Limitation of the invention.
Claims (4)
1. a kind of close-loop power controlling method, it is characterised in that methods described includes：
Physical Uplink Shared Channel receiving power, the power headroom of the user equipment to report according to user equipment uplink
With the up path loss smoothing factor of base station side, the path loss of the user equipment uplink experience is estimated, wherein, power headroom is used
PH represents that the target transmit power of user equipment uses Ptx_pusch_tarRepresent, maximum transmission power uses PmaxRepresent, so,
Ptx_pusch=min { Pmax- PH, Pmax}；
According to formula PL=(1- β) PLfore+β·(Ptx_pusch-Prv_pusch) the estimation user equipment uplink experience
Path loss, PL is the path loss of the user equipment uplink experience, and β is the up PL smoothing factors of base station side, PLforeTo be upper one
The up PL that secondary base station side updates, its initial value is Ptx_pusch- Prv_pusch, Ptx_puschIt is the actual transmission of the user equipment
Power, Prv_puschIt is the Physical Uplink Shared Channel receiving power of the user equipment uplink, the Ptx_puschFor described
The actual transmission power of user equipment；
By reading the closed power information of the user equipment and according to the path loss of the estimation, obtaining the user equipment
Target transmit power；
Target transmit power according to the user equipment, the target transmit power for calculating the user equipment sets with the user
The difference of standby actual transmission power, the uplink transmission power of the user equipment is compensated with the difference；
The closed power information of the user equipment includes the user equipment accumulation transmitting power control TPC information；
The closed power information by reading the user equipment and according to the path loss of the estimation, obtains the user and sets
Standby target transmit power includes：
Read the user equipment accumulation transmitting power control TPC information；
Take maximum transmission power and P0+α×PL+10log10M+ΔTF+TPCaccumu_UEIn minimum value as the user equipment
Target transmit power, the P0It is the benchmark receiving power of the Physical Uplink Shared Channel of the user equipment uplink
Value, the α is part road loss compensation factor, and the PL is the path loss of the user equipment uplink experience, and the M is described
The sub-band number that user equipment uplink takes, the ΔTFIt is the peculiar parameter Ks of user equipment and institute configured by high-level signaling
State the parameter that the modulation coding mode of user equipment uplink use is determined, the TPCaccumu_UEFor the user equipment is tired
Product transmitting power control TPC information；
The uplink transmission power for compensating the user equipment with the difference includes：Dry making an uproar is believed to target according to the difference
Than being modified.
2. the method for claim 1, it is characterised in that the closed power information of the user equipment includes the user
Equipment absolute transmission power controls TPC information；
The closed power information by reading the user equipment and according to the path loss of the estimation, obtains the user and sets
Standby target transmit power includes：
Read the user equipment absolute transmission power control TPC information；
Take maximum transmission power and P0+α×PL+10log10M+ΔTF+TPCabsolute_UEIn minimum value as the user equipment
Target transmit power, the P0It is the benchmark receiving power of the Physical Uplink Shared Channel of the user equipment uplink
Value, the α is part road loss compensation factor, and the PL is the path loss of the user equipment uplink experience, and the M is described
The sub-band number that user equipment uplink takes, the ΔTFIt is the peculiar parameter Ks of user equipment and institute configured by high-level signaling
State the parameter that the modulation coding mode of user equipment uplink use is determined, the TPCabsolute_UEFor the user equipment is exhausted
To transmitting power control TPC information.
3. a kind of closed-loop power control device, it is characterised in that described device includes：
Path loss estimation block, for the Physical Uplink Shared Channel receiving power according to user equipment uplink, the user
The up path loss smoothing factor of power headroom and base station side that equipment is reported, estimates the road of the user equipment uplink experience
Damage, wherein, power headroom is represented using PH, and the target transmit power of user equipment uses Ptx_pusch_tarRepresent, maximum transmitted
Power uses PmaxRepresent, so, Ptx_pusch=min { Pmax- PH, Pmax}；
According to formula PL=(1- β) PLfore+β·(Ptx_pusch-Prv_pusch) the estimation user equipment uplink experience
Path loss, PL is the path loss of the user equipment uplink experience, and β is the up PL smoothing factors of base station side, PLforeTo be upper one
The up PL that secondary base station side updates, its initial value is Ptx_pusch- Prv_pusch, Ptx_puschIt is the actual transmission of the user equipment
Power, Prv_puschIt is the Physical Uplink Shared Channel receiving power of the user equipment uplink, the Ptx_puschFor described
The actual transmission power of user equipment；
Acquisition module, for by reading the closed power information of the user equipment and according to the path loss of the estimation, obtaining
The target transmit power of the user equipment；
Difference calculating module, for the target transmit power according to the user equipment, calculates the target hair of the user equipment
The difference of power and the actual transmission power of the user equipment is sent, the up transmission of the user equipment is compensated with the difference
Power；
The closed power information of the user equipment includes the user equipment accumulation transmitting power control TPC information；
The acquisition module includes：
First reading unit, for reading the user equipment accumulation transmitting power control TPC information；
First acquisition unit, for taking maximum transmission power and P0+α×PL+10log10M+ΔTF+TPCaccumu_UEIn minimum value
As the target transmit power of the user equipment, the P0It is the Physical Uplink Shared Channel of the user equipment uplink
Benchmark received power value, the α is part road loss compensation factor, and the PL is the road of user equipment uplink experience
Damage, the M is the sub-band number that the user equipment uplink takes, the ΔTFIt is the user equipment configured by high-level signaling
The parameter that the modulation coding mode that peculiar parameter Ks and the user equipment uplink are used is determined, the TPCaccumu_UEFor
The user equipment accumulation transmitting power control TPC information；
The difference calculating module is additionally operable to：Target Signal to Interference plus Noise Ratio is modified according to the difference.
4. device as claimed in claim 3, it is characterised in that the closed power information of the user equipment includes the user
Equipment absolute transmission power controls TPC information；
The acquisition module includes：
Second reading unit, for reading the user equipment absolute transmission power control TPC information；
Second acquisition unit, for taking maximum transmission power and P0+α×PL+10log10M+ΔTF+TPCabsolute_UEIn minimum
It is worth as the target transmit power of the user equipment, the P0For the physical uplink of the user equipment uplink shares letter
The benchmark received power value in road, the α is part road loss compensation factor, and the PL is the user equipment uplink experience
Path loss, the M is the sub-band number that the user equipment uplink takes, the ΔTFIt is that the user configured by high-level signaling sets
The parameter that the modulation coding mode that standby peculiar parameter Ks and the user equipment uplink are used is determined, the TPCabsolute_UE
For the user equipment absolute transmission power controls TPC information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210276319.8A CN103582096B (en) | 2012-08-03 | 2012-08-03 | A kind of close-loop power controlling method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210276319.8A CN103582096B (en) | 2012-08-03 | 2012-08-03 | A kind of close-loop power controlling method and device |
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| CN103582096B true CN103582096B (en) | 2017-05-31 |
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| WO2018171704A1 (en) * | 2017-03-24 | 2018-09-27 | Huawei Technologies Co., Ltd. | Systems and method of power control for uplink transmissions |
| AU2017436329B2 (en) * | 2017-10-19 | 2023-08-31 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Wireless communication method and device |
| WO2019169624A1 (en) * | 2018-03-09 | 2019-09-12 | Oppo广东移动通信有限公司 | Data transmission method and device |
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| CN101132203A (en) * | 2006-08-25 | 2008-02-27 | 大唐移动通信设备有限公司 | Control method for reinforcing power of uplink physical signal channel |
| CN101312367B (en) * | 2007-05-23 | 2012-05-02 | 鼎桥通信技术有限公司 | Method and apparatus for controlling transmission power during downlink interrupted transmission |
| CN101729102A (en) * | 2008-10-20 | 2010-06-09 | 华为技术有限公司 | Communication equipment, communication system and method for controlling uplink transmission power |
| US8068868B2 (en) * | 2009-12-28 | 2011-11-29 | Motorola Mobility, Inc. | Uplink power alignment estimation in a communication system |
| KR20120080327A (en) * | 2011-01-07 | 2012-07-17 | 삼성전자주식회사 | Method and apparatus for controlling uplink transmission power in wireless communication system |
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