CN103037489B - uplink signal power control method and device - Google Patents
uplink signal power control method and device Download PDFInfo
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- CN103037489B CN103037489B CN201110293471.2A CN201110293471A CN103037489B CN 103037489 B CN103037489 B CN 103037489B CN 201110293471 A CN201110293471 A CN 201110293471A CN 103037489 B CN103037489 B CN 103037489B
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Abstract
The invention discloses a kind of uplink signal power control method and device, the above method includes：Establish the corresponding relation of the closed loop power control command and power correction value for distributing antenna system and CoMP system；ENB judges whether to carry out uplink power adjustment using above-mentioned corresponding relation control UE according to the signal of the UE that each receiving node receives in network；In judged result for when being, eNB notifies UE to adjust uplink power according to above-mentioned corresponding relation.Pass through technical scheme provided by the invention, effectively enhance the closed power adjustment capability effect of LTE/LTE A systems, solve in the prior art when UE is in distributed multi-antenna system or CoMP system, the problem of base station can not reasonably adjust UE upward signal power.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of uplink signal power control method and device.
Background technology
The uplink physical channel of Long Term Evolution (Long Term Evolution, referred to as LTE) system includes physical accidental
Access channel (Physical Random Access Channel, referred to as PRACH), Physical Uplink Shared Channel
(Physical Uplink Shared Channel, referred to as PUSCH), Physical Uplink Control Channel (Physical Uplink
Control Channel, referred to as PUCCH).LTE's is up using single-carrier frequency division multiple access (Signal-Carrier
Frequency Division Multiple Access, abbreviation SC-FDMA) technology, reference signal and data are to pass through the time-division
What the mode of multiplexing (Time Division Multiplex, referred to as TDM) was multiplexed together.Uplink reference signals are divided into solution
Adjust reference signal (Demodulation Reference Signal, referred to as DMRS) and measuring reference signals (Sounding
Reference Signal, referred to as SRS).
Up due to LTE uses SC-FDMA technologies, different user devices (User Equipment, letter in a cell
Claim UE) upward signal between be it is mutually orthogonal, therefore uplink power control be mainly used in compensate channel path loss
(pathloss, abbreviation PL) and shadow fading, and for suppressing inter-cell interference.Uplink power control process in LTE system
The transmission power of the channels such as PUSCH/PUCCH and SRS can be controlled.
The calculation formula of the up PUSCH transmission powers of Rel-10 version LTE protocols is：
In above-mentioned formula：
RCMAX, c(i) it is maximum allowable transmission power on this carrier wave, depending on UE power class, determines that UE launches
The maximum capacity of power.
MPUSCH, c(i) it is the PUSCH resource sizes distributed on subframe i on this carrier wave, with the fast (Resource of resource
Block, referred to as RB) represent, that is, the RB distributed number, the power spectral density (Power on each RB of UE distribution
Spectral Density, referred to as PSD) it is all equal, and transmission power is directly proportional with the RB numbers distributed.
PO_PUSCH, c(j) represent to meet letter when considering path loss impacts (assuming that in base station side UE) on this carrier wave
UE objective emission power during road transmission requirement.
αc(j) what is represented is part path loss balancing coefficient on this carrier wave, αc(j) value has αc∈ 0,0.4,
0.5,0.6,0.7,0.8,0.9,1 }, it is the proprietary parameter of cell of 3 bits, is provided by upper strata.αc(j)=1 represent complete
Path loss compensates, i.e., the signal to noise ratio that each user reaches the signal of base station is identical, the transmitting work(of Cell Edge User
Rate is very high；αc(j) no path loss compensation=0 is represented, base station can be very high to the receiving power of Cell Center User, to small
The receiving power of area edge user is very low；0 ＜ αc(j) ＜ 1 represents part path loss balancing, Cell Center User path loss
The loss very little of compensation, the loss of Cell Edge User path loss compensation are larger.This design can ensure that center of housing estate is used
Family throughput degradation is little, while causes interference of the Cell Edge User to neighbor cell to have a certain degree of reduction.
PLcIt is the downlink path loss value calculated on this carrier wave, estimates for up path loss.
fc(i) it is close-loop power control parameter on this carrier wave, by wireless heterogeneous networks (Radio Resource
Control, referred to as RRC) provide, there are accumulation and absolute value two types.This parameter is closed-loop power control and cell in cell
Between power control synthesis result.
If up-link carrier is configured with PUSCH with PUCCH simultaneous transmissions, up PUSCH power control process formula is：
WhereinIt is the linear value of PUCCH transmission power.Remaining parameter and above-mentioned Rel-10 PUSCH are sent out
The parameter penetrated in the Power Control formula of power is identical.
The control process formula of the up PUCCH transmission powers of Rel-10 version LTE protocols is：
In above-mentioned formula：
PCMAX, c(i) it is maximum allowable transmission power on this carrier wave, depending on UE power class, determines that UE launches
The maximum capacity of power.
h(nCQI, nHARQ, nSR) it is the value related to PUCCH format, determined by the PUCCH specifying information bit numbers carried.
ΔF_PUCCH(F) it is the value related to PUCCH format, is determined by PUCCH format.
ΔTxDWhether (F ') is the value related to PUCCH transmitting diversities, launched by PUCCH using transmitting diversity mode
Determine.
PO_PUSCH, c(j) represent to meet letter when considering path loss impacts (assuming that in base station side UE) on this carrier wave
UE objective emission power during road transmission requirement.
PLcIt is the downlink path loss value calculated on this carrier wave, is lost and estimates for up path.
G (i) is UE close-loop power control parameters, is provided by RRC, there is accumulation and current absolute value two types.This ginseng
Number is closed-loop power control and the synthesis result of minizone power control in cell.
The control process formula of the uplink SRS transmission power of Rel-10 version LTE protocols is：
PSRS, c(i)=min { PCMAX, c(i), PSRS_OFFSET, c(m)+10log10(MSRS, c)+PO_PUSCH, c(j)+αc(j)·PLc
+fc(i)}
In above-mentioned formula：
PCMAX, c(i) it is transmission power maximum allowable on this carrier wave, depending on UE power class, determines that UE launches
The maximum capacity of power.
PSRS_OFFSET, c(m) it is that the SRS of high-rise configuration and PUSCH transmission powers bias coefficient.
MSRS, cIt is the detective bandwidth for the SRS for being currently needed for transmitting.
PO_PUSCH, c(j) represent to meet letter when considering path loss impacts (assuming that in base station side UE) on this carrier wave
UE objective emission power during road transmission requirement.
αc(j) what is represented is part path loss balancing coefficient on this carrier wave, αc(j) value has αc∈ 0,0.4,
0.5,0.6,0.7,0.8,0.9,1 }, it is the proprietary parameter of cell of 3 bits, is provided by upper strata.αc(j)=1 represent complete
Path loss compensates, i.e., the signal to noise ratio that each user reaches the signal of base station is identical, the transmitting work(of Cell Edge User
Rate is very high；αc(j) no path loss compensation=0 is represented, base station can be very high to the receiving power of Cell Center User, to small
The receiving power of area edge user is very low；0 ＜ αc(j) ＜ 1 represents part path loss balancing, Cell Center User path loss
The loss very little of compensation, the loss of Cell Edge User path loss compensation are larger.This design can ensure that center of housing estate is used
Family throughput degradation is little, while causes interference of the Cell Edge User to neighbor cell to have a certain degree of reduction.
PLcIt is the downlink path loss value calculated on this carrier wave, is lost and estimates for upper walking along the street strength.
fc(i) it is UE close-loop power control parameters on this carrier wave, is provided by RRC have two kinds of accumulation and current absolute value
Type.This parameter is closed-loop power control and the synthesis result of minizone power control in cell.
In above-mentioned existing Rel-10 versions LTE protocol (36.213 Evolved Universal Terrestrial
Radio Access(E-UTRA)；Physical layer procedures) power control scheme in, it is up for compensating
The path loss values PL of path losscAll downlink path loss is measured by UE to obtain.What UE was received by calculating leads
The difference for the pilot transmission power that frequency signal power and base station are indicated to UE by signaling can be obtained by downlink path loss value,
And path loss when the above-mentioned path loss values being calculated to be used as to upward signal Power Control compensates.
Path loss compensation is the part as the basic open loop operating point of UE transmission powers, and the purpose is to be uplink
Power spectral density one rough operating point substantially, modulation and encoding scheme (the Modulation and for scheduling are set
Coding Scheme, abbreviation MCS) suitable power spectral density is provided.And closed-loop control is as a kind of quick self-adapted work(
Rate method of adjustment, close-loop power control are applied around open loop operating point, and divided ring operating point carries out power fine setting, Ke Yida
Disturbed to control and adjust power setting with the purpose of adaptive channel condition (including rapid fading).
The method of close-loop power control in the LTE standard of Rel-10 versions is eNB by physical layer signaling by closed loop control
Order processed is sent to UE, after UE receives closed-loop control order, according to 10.2.0 versions LTE protocol (36.213 Evolved
Universal Terrestrial Radio Access(E-UTRA)；Physical layer procedures) in form
5.1.1.1-2 with the definition in 5.1.1.1-3 and 5.1.2.1-1 and 5.1.2.1-2 to closed-loop control order, according to closed loop control
The power variation that system order is specified, adjust UE uplink power.
In distributed multi-antenna system or cooperative multipoint transmission (Coordinate multi-point
Transmission, abbreviation CoMP) in system, because the sending node and receiving node of the uplink and downlink signals at UE ends are possible to not
Unanimously, will cause according to the PL values that estimate of reference signal that descending sending node is sent and actual uplink receiving node to
PL value differences between UE are not larger, and the PL values come out with downlink estimation are come the transmit power of the UE sides signal to up-link
Compensate, will result in the inaccurate of UE end signals transmission power estimation, waste UE transmission powers, increase UE battery losses, shadow
Ring the interference of the reception and increase of UE upward signal to other users.
Meanwhile in distributed multi-antenna system or according to (the Technical Specification of 3GPP standards 36.819
Group Radio Access Network；Coordinated Multi-Point Operation for LTE) in CoMP
In the CoMP system that deployment scenario 4 is disposed, when UE is in covering for low power nodes (Low Power Nodes, abbreviation LPN)
When under lid, cell special reference signal (Cell Specific Reference Signal, referred to as CRS) passes through serving cell
And LPN is transmitted simultaneously, now the sending node of UE uplink and downlink signals and receiving node are all LPN, then according to Rel-
Ascending power control method in 10 LTE standards, UE need to use cell broadcast service when calculating path loss
ReferenceSignalPower parameters, and difference be present in the parameter and the actual CRS sent of LPN power, therefore UE is calculated
Obtained PL values and UE to LPN actual uplink PL values have larger error, now will also result in the estimation of UE end signals transmission power
It is inaccurate, waste UE transmission powers, increase UE battery losses, and influence UE upward signal reception and increase to other use
The interference at family.
In above-mentioned scene, error is larger between the up path loss of UE estimations and the up path loss of reality, using existing
The closed loop power control command that some Rel-10 standards define, because closed loop power control command is a kind of fine setting means, so
Its step-length it is shorter, it is necessary to base station repeatedly issue closed loop power control command instruction UE carry out close-loop power control just can will be up
Path wear-out error compensation is returned, and expense is larger, and the time is longer so that UE is in longer period of time with inappropriate work(
Rate is launched, and UE ascending power cannot be utilized rationally, and increases the interference to other users.
Therefore, when the UE up-downgoings in distributed multi-antenna system or CoMP system use different sending nodes
During with receiving node or under the covering in LPN, the existing method on path loss estimation can not reflect actual uplink
The pathloss situation of channel, cause larger path loss evaluated error, it is therefore desirable to consider how to strengthen closed power control
The method of the ability of system so that the power of UE upward signal can be adjusted in time by close-loop power control in above-mentioned scene
Spectrum density, reasonably to control UE transmission signal power, ensure the transmission of UE upward signal, reduce the damage of UE batteries
Consumption, while and can enough reduces the interference to other users.
The content of the invention
For when UE is in distributed multi-antenna system or CoMP system, base station can not be rational in the prior art
The problem of adjusting UE upward signal power, the invention provides a kind of uplink signal power control method and device, with solution
State problem.
According to an aspect of the invention, there is provided a kind of uplink signal power control method, including：Establish for being distributed
The corresponding relation of the closed loop power control command and power correction value of formula antenna system and CoMP system；ENB is according to each in network
The signal for the UE that receiving node receives, judge whether to carry out uplink power adjustment using above-mentioned corresponding relation control UE；
In judged result for when being, eNB notifies UE to adjust uplink power according to above-mentioned corresponding relation.
Signal in eNB according to the UE that each receiving node receives in network, judge whether to use above-mentioned corresponding relation control
After UE processed carries out uplink power adjustment, in addition to：When judged result is no, eNB notifies UE according to general closed loop
Power control command and the corresponding relation of power correction value adjustment uplink power, wherein, general close-loop power control life
Order and the corresponding relation of power correction value include one below：Closed loop power control command and work(in Rel-10 version LTE standards
Closed loop power control command and the corresponding relation of power correction value in the corresponding relation of rate correction value, Rel-9 version LTE standards,
Closed loop power control command and the corresponding relation of power correction value in Rel-8 version LTE standards.
Above-mentioned uplink power includes at least one of：The uplink of PUSCH uplink power, PUCCH
Power, SRS uplink power, PRACH uplink power, DMRS uplink power.
ENB by signal UE according to above-mentioned corresponding relation adjust uplink power, wherein signaling include it is following it
One：High-level signaling, physical layer signaling.
Closed loop power control command in above-mentioned corresponding relation is 1 bit and/or the closed loop power control command of 2 bits.
According to another aspect of the present invention, there is provided a kind of upward signal output control device, including：Using judging mould
Block, for the signal according to the UE that each receiving node receives in network, judge whether to use for distributing antenna system and
The closed loop power control command of cooperative multipoint transmission CoMP system and the corresponding relation control UE of power correction value carry out up biography
Defeated power adjustment；First control module, for when the judged result using judge module is to be, UE to be according to above-mentioned correspondence for notice
Relation adjusts uplink power.
Said apparatus also includes：Second control module, for when the use of the judged result of judge module being no, notifying UE
Uplink power is adjusted according to the corresponding relation of general closed loop power control command and power correction value, wherein, it is general
Closed loop power control command and the corresponding relation of power correction value include one below：Closed loop work(in Rel-10 version LTE standards
Closed loop power control command and power correction in the corresponding relation of rate control command and power correction value, Rel-9 version LTE standards
Closed loop power control command and the corresponding relation of power correction value in the corresponding relation of value, Rel-8 version LTE standards.
Above-mentioned uplink power includes at least one of：The uplink of PUSCH uplink power, PUCCH
Power, SRS uplink power, PRACH uplink power, DMRS uplink power.
First control module, for adjusting uplink power according to above-mentioned corresponding relation by signaling UE, wherein
Signaling includes one below：High-level signaling, physical layer signaling.
Closed loop power control command in above-mentioned corresponding relation is 1 bit and/or the closed loop power control command of 2 bits.
By the present invention, using being provided for closing for distributing antenna system and CoMP system on the basis of existing technology
Ring power control command form, when UE is in distributing antenna system and CoMP system, eNB is used for spaced antenna using this
The closed loop power control command form of system and CoMP system carries out the scheme of upward signal Power Control to UE, effectively enhances
The closed power adjustment capability of LTE/LTE-A (LTE Advanced) system, solve in the prior art when UE is in distribution
When in multiaerial system or CoMP system, the problem of base station can not reasonably adjust UE upward signal power.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of uplink signal power control method according to embodiments of the present invention；
Fig. 2 is the flow chart according to the upward signal power closed-loop control method of present example；
Fig. 3 is the application scenarios schematic diagram according to present example one；
Fig. 4 is the application scenarios schematic diagram according to present example two；
Fig. 5 is the application scenarios schematic diagram according to present example three；
Fig. 6 is the structured flowchart of upward signal output control device according to embodiments of the present invention.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
Fig. 1 is the flow chart of uplink signal power control method according to embodiments of the present invention.As shown in figure 1, according to this
The uplink signal power control method of inventive embodiments includes：
Step S102, establish closed loop power control command and power correction for distributing antenna system and CoMP system
The corresponding relation of value；
Step S104, eNB judge whether to use above-mentioned correspondence according to the signal of the UE that each receiving node receives in network
Relation control UE carries out uplink power adjustment；
Step S106, in judged result for when being, eNB notifies UE to adjust uplink power according to the corresponding relation.
The method that the present embodiment provides is directed to up in distributed multi-antenna system or the UE ends in CoMP system
The receiving node of link and the sending node of downlink are inconsistent, or UE be in distributed multi-antenna system or according to
When under the LPN coverings in the CoMP system that 3GPP standard deployments scene 4 is disposed, the difference of UE up-downgoing path losses compared with
Greatly, eNB can not reasonably adjust the problem of UE uplink power, it is proposed that a kind of uplink signal power control method, i.e.,
The corresponding relation of the new closed loop power control command being exclusively used under CoMP and spaced antenna of definition and power correction value, makes
ENB can notify UE to adjust UE according to power variation corresponding to the closed-loop control order defined in the corresponding relation when needed
Uplink power.The above method enhances the ability of close-loop power control, it is effectively compensated for path loss and estimates
The error of meter.
Preferably, the signal in eNB according to the UE that each receiving node receives in network, judge whether to use above-mentioned correspondence
After relation control UE carries out uplink power adjustment, it can also include：Judged result for it is no when, eNB notify UE according to
General closed loop power control command and the corresponding relation adjustment uplink power of power correction value, wherein, general closed loop
Power control command and the corresponding relation of power correction value include one below：Closed power control in Rel-10 version LTE standards
System order and closed loop power control command in the corresponding relation of power correction value, Rel-9 version LTE standards and power correction value
Closed loop power control command and the corresponding relation of power correction value in corresponding relation, Rel-8 version LTE standards.
Whether newly-built CoMP and closed loop power control command under spaced antenna and the power correction value of being used for is used
Corresponding relation is needed to be adjusted according to actual conditions, and when that need not use newly-built corresponding relation, eNB can be used
Original general closed loop power control command and power correction value corresponding relation (such as Rel-10, Rel-9 or Rel-8 version
The corresponding relation of closed loop power control command and power correction value in this LTE standard, in Rel-10, Rel-9 or Rel-8 version
Above-mentioned corresponding relation is expressed as closed loop power control command form in LTE standard) control UE progress uplink power adjustment.
Preferably, above-mentioned uplink power can include at least one of：PUSCH uplink power, PUCCH
Uplink power, SRS uplink power, PRACH uplink power, DMRS uplink power.
Uplink power to UE is controlled, and is primarily referred to as uplink power to UE PUSCH, PUCCH
Uplink power, SRS uplink power, PRACH uplink power, DMRS uplink power in one
Or it is multiple be controlled, but this is not absolute, in specific implementation process, on controllable object includes but is not limited to
State the uplink power of channel or signal.
Preferably, eNB can adjust uplink power, wherein signaling by signaling UE according to above-mentioned corresponding relation
Including one below：High-level signaling, physical layer signaling.
ENB can notify UE to adjust uplink power according to above-mentioned corresponding relation in several ways, it is contemplated that change
Size and implementation difficulty, can preferably be notified using signaling, the signaling used can be high-level signaling also may be used
Think physical layer signaling.
Preferably, the closed loop power control command in above-mentioned corresponding relation is the closed power control of 1 bit and/or 2 bits
System order.
Closed loop power control command can be divided into the closed loop power control command of 1 bit and the close-loop power control of 2 bits
Order, in specific implementation process, the closed power of one of which as the case may be, can be reflected in above-mentioned corresponding relation
The corresponding relation of control command and power correction value, two kinds of closed loop power control commands and power correction value can also be reflected simultaneously
Corresponding relation.
Above preferred embodiment is described in detail with reference to example.
The scene of this exemplary application is illustrated first, including：
(1) in distributed multi-antenna system or cooperative multicast system, the receiving node of the up-link at UE ends
It is possible to inconsistent with the sending node of downlink, or UE is in distributed multi-antenna system or according to 3GPP standards portion
When under the LPN coverings in the CoMP system disposed of administration's scene 4, subframe i PUSCH transmission power on this carrier wave most
The big smaller value for allowing transmission power to estimate transmission power with PUSCH, wherein PUSCH's estimates transmission power by this carrier wave
The objective emission for not considering to meet during path loss impacts UE during transmission requirement in PUSCH resource size, this carrier wave
Part path loss balancing coefficient on power, this carrier wave, the downlink path loss value of UE measurements, the DeltaTF on this carrier wave
UE close-loop power control parameters in parameter and this carrier wave are calculated jointly.
(2) in distributed multi-antenna system or cooperative multicast system, the receiving node of the up-link at UE ends
It is possible to inconsistent with the sending node of downlink, or UE is in distributed multi-antenna system or according to 3GPP standards portion
When under the LPN coverings in the CoMP system disposed of administration's scene 4, subframe i PUCCH ascending power on this carrier wave most
The big smaller value for allowing transmission power to estimate transmission power with PUCCH, wherein PUCCH's estimates transmission power by this carrier wave
The objective emission for not considering to meet during path loss impacts UE during transmission requirement in PUCCH resource size, this carrier wave
Power, the downlink path loss value of UE measurements, the h (n related to PUCCH formatCQI, nHARQ, nSR) value, related to PUCCH format
ΔF_PUCCH(F) value, to the PUCCH Δs that whether using emission diversity scheme to carry out transmitting relatedTxD(F ') value and this carrier wave
On UE close-loop power control parameters be calculated jointly.
(3) in distributed multi-antenna system or cooperative multicast system, the receiving node of the up-link at UE ends
It is possible to inconsistent with the sending node of downlink, or UE is in distributed multi-antenna system or according to 3GPP standards portion
When under the LPN coverings in the CoMP system that administration's scene 4 is disposed, subframe i SRS ascending power is the maximum on this carrier wave
Allow transmission power and SRS to estimate the smaller value of transmission power, wherein SRS estimate transmission power by the SRS on this carrier wave with
PUSCH transmission power biasing PSRS_OFFSET, c(m), SRS amount of bandwidth, on this carrier wave when not considering path loss impacts
Meet under objective emission power, the part path loss balancing coefficient on this carrier wave, the UE measurement of UE during transmission requirement
UE close-loop power control parameters in row path loss values and this carrier wave are calculated jointly.
UE under above-mentioned application scenarios estimates the path loss of up channel by the measurement of downlink reference signal
Inaccuracy, this example are directed to the upward signal power closed-loop control method that the problem provides, as shown in Fig. 2 including：
Step S202, the UE that base station receives according to each receiving point uplink receiving power, select the closed loop needed
Power control command defines table and (reflects closed loop power control command and the power for distributing antenna system and CoMP system
The form or the original general closed loop power control command of reflection and the corresponding relation of power correction value of the corresponding relation of correction value
Form)；
Step S204, base station by signal UE its selection closed loop power control command define table；
Step S206, base station send closed loop power control command to UE；
Step S208, after UE receives the closed loop power control command of base station transmission, find out the closed power of base station instruction
Control command is specifically defined；
Step S210, UE adjust uplink power according to closed loop power control command.
From above-mentioned steps, reflected in the form of form (closed loop power control command defines table) use in this example
In the corresponding relation of the closed loop power control command and power correction value of distributing antenna system and CoMP system.
Further it is illustrated with reference to instantiation：
Example one：
As shown in figure 3, there are two users in a serving cell, UE1 and UE2 are designated as respectively.Wherein, UE1 distances clothes
Business cell eNB downlink path loss is designated as DL PL_1, and the downlink path loss of UE2 distance service cell base stations is designated as DL
PL_2.Two nearest LPN of user of distance are designated as LPN1, LPN2 respectively.LPN1 to UE1 uplink pathloss is designated as UL
PL1, LPN2 to UE2 uplink pathloss are designated as UL PL2.
UE1 uplink Node is LPN1, and downlink node is service cell eNB, UE2 uplink Node
For LPN2, and downlink node is service cell eNB.
Path loss ULs of path loss DL PL_1 and the DL PL_2 of downlink much larger than actual up channel
PL1 and UL PL2.
The SRS power for the UE that eNB receives according to each receiving node, by realizing that algorithms selection UE is exclusively used in using new
CoMP and the closed loop power control command under spaced antenna definition tables, and notify UE.
Current UE will send PUSCH, and closed loop accumulation power control enables, and it is in table that eNB, which sends closed loop power control command " 00 ",
0 give UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 1：
Table 1
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", current PUSCH transmission powers are reduced into 6dB.
Or
Current UE will send PUCCH, and the control of closed loop cumulative power is enabled, and eNB sends closed loop power control command " 00 " i.e.
0 in table gives UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 2：
Table 2
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", current PUCCH transmission powers are reduced into 9dB.
Or
Current UE only sends PUSCH, and closed loop accumulation power control does not enable, and it is table that eNB, which sends closed loop power control command " 00 ",
In 0 give UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 3：
Table 3
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", by current PUSCH transmission powers calculating formula：
In fc(i) item is directly set as the transmission power for using above formula to calculate PUSCH after -16dB.
Or
Current UE needs to send PUCCH, and closed loop accumulation power control does not enable, and eNB sends closed loop power control command " 00 " i.e.
0 in table gives UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 4：
Table 4
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", by current PUSCH transmission powers calculating formula：
In fc(i) item is directly set as the transmission power for using above formula to calculate PUCCH after -16dB.
Example two：
As shown in figure 4, there are two users in a serving cell, UE1 and UE2 are designated as respectively.Wherein two use of distance
The nearest LPN in family is designated as LPN1, LPN2 respectively.
LPN transmission power is significantly less than the transmission power of base station in service sector.
UE1 uplink Node and downlink node is all LPN1, UE2 uplink Node and downlink section
Point is all LPN2.
The SRS power for the UE that eNB receives according to each receiving node, by realizing that algorithms selection UE is exclusively used in using new
CoMP and the closed loop power control command under spaced antenna definition tables, and notify UE.
Current UE will send PUSCH, and closed loop accumulation power control enables, and it is in table that eNB, which sends closed loop power control command " 00 ",
0 give UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 5：
Table 5
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", current PUSCH transmission powers are reduced into 6dB.
Or
Current UE will send PUCCH, and the control of closed loop cumulative power is enabled, and eNB sends closed loop power control command " 00 " i.e.
0 in table gives UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 6：
Table 6
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", current PUCCH transmission powers are reduced into 9dB.
Or
Current UE only sends PUSCH, and closed loop accumulation power control does not enable, and it is table that eNB, which sends closed loop power control command " 00 ",
In 0 give UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 7：
Table 7
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", by current PUSCH transmission powers calculating formula：
In fc(i) item is directly set as the transmission power for using above formula to calculate PUSCH after -16dB.
Or
Current UE needs to send PUCCH, and closed loop accumulation power control does not enable, and eNB sends closed loop power control command " 00 " i.e.
0 in table gives UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 8：
Table 8
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", by current PUSCH transmission powers calculating formula：
In fc(i) item is directly set as the transmission power for using above formula to calculate PUCCH after -16dB.
Example three：
As shown in figure 5, there are two users in a serving cell, UE1 and UE2 are designated as respectively.Wherein two use of distance
The nearest LPN in family is designated as LPN1, LPN2 respectively.LPN1 to UE1 uplink pathloss is designated as UL PL1, LPN2 to UE2
Uplink pathloss be designated as UL PL2.
LPN transmission power is significantly less than the transmission power of base station in service sector.
UE1 uplink Node is LPN1 and service cell eNB, and downlink node is all LPN1；UE2 uplink
Circuit node is LPN2 and service cell eNB, and downlink node is all LPN2.
The SRS power for the UE that eNB receives according to each receiving node, by realizing that algorithms selection UE is exclusively used in using new
CoMP and the closed loop power control command under spaced antenna definition tables, and notify UE.
Current UE will send PUSCH, and closed loop accumulation power control enables, and it is in table that eNB, which sends closed loop power control command " 00 ",
0 give UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 9：
Table 9
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", current PUSCH transmission powers are reduced into 6dB.
Or
Current UE will send PUCCH, and the control of closed loop cumulative power is enabled, and eNB sends closed loop power control command " 00 " i.e.
0 in table gives UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 10：
Table 10
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", current PUCCH transmission powers are reduced into 9dB.
Or
Current UE only sends PUSCH, and closed loop accumulation power control does not enable, and it is table that eNB, which sends closed loop power control command " 00 ",
In 0 give UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 11：
Table 11
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", by current PUSCH transmission powers calculating formula：
In fc(i) item is directly set as the transmission power for using above formula to calculate PUSCH after -16dB.
Or
Current UE needs to send PUCCH, and closed loop accumulation power control does not enable, and eNB sends closed loop power control command " 00 " i.e.
0 in table gives UE.
The definition tables such as table of the new closed loop power control command being exclusively used under CoMP and spaced antenna of eNB selections
Shown in 12：
Table 12
It is then right in definition tables of the UE according to the new closed loop power control command being exclusively used under CoMP and spaced antenna
The definition of closed loop power control command " 00 ", by current PUSCH transmission powers calculating formula：
In fc(i) item is directly set as the transmission power for using above formula to calculate PUCCH after -16dB.
Fig. 6 is the structured flowchart of upward signal output control device according to embodiments of the present invention.As shown in fig. 6, according to
The upward signal output control device of the embodiment of the present invention includes：
Using judge module 62, for the signal according to the UE that each receiving node receives in network, judge whether to use
Corresponding relation control UE for the closed loop power control command and power correction value of distributing antenna system and CoMP system enters
Row uplink power adjusts；
First control module 64, it is connected to using judge module 62, for being in the judged result using judge module 62
When being, notice UE adjusts uplink power according to above-mentioned corresponding relation.
The device that the present embodiment provides allows eNB to notify UE according to being exclusively used under CoMP and spaced antenna when needed
Corresponding relation of the closed loop power control command with power correction value defined in the corresponding power variation of closed-loop control order
UE uplink power is adjusted, so as to effectively enhance the ability of close-loop power control, it is effectively compensated for road
The error of footpath loss estimation.
Preferably, upward signal output control device according to the preferred embodiment of the invention can also include：
Second control module, for when the use of the judged result of judge module being no, UE to be according to general closed loop for notice
Power control command and the corresponding relation of power correction value adjustment uplink power, wherein, general close-loop power control life
Order and the corresponding relation of power correction value include one below：Closed loop power control command and work(in Rel-10 version LTE standards
Closed loop power control command and the corresponding relation of power correction value in the corresponding relation of rate correction value, Rel-9 version LTE standards,
Closed loop power control command and the corresponding relation of power correction value in Rel-8 version LTE standards.
Whether newly-built CoMP and closed loop power control command under spaced antenna and the power correction value of being used for is used
Corresponding relation is needed to be adjusted according to actual conditions, and when that need not use newly-built corresponding relation, eNB can be used
Original general closed loop power control command and power correction value corresponding relation (such as Rel-10, Rel-9 or Rel-8 version
The corresponding relation of closed loop power control command and power correction value in this LTE standard, in Rel-10, Rel-9 or Rel-8 version
Above-mentioned corresponding relation is expressed as closed loop power control command form in LTE standard) control UE progress uplink power adjustment.
Preferably, above-mentioned uplink power can include at least one of：PUSCH uplink power, PUCCH
Uplink power, SRS uplink power, PRACH uplink power, DMRS uplink power.
Uplink power to UE is controlled, and is primarily referred to as uplink power to UE PUSCH, PUCCH
Uplink power, SRS uplink power, PRACH uplink power, DMRS uplink power in one
Or it is multiple be controlled, but this is not absolute, in specific implementation process, on controllable object includes but is not limited to
State the uplink power of channel or signal.
Preferably, the first control module, can be used for adjusting up biography according to above-mentioned corresponding relation by signaling UE
Defeated power, wherein above-mentioned signaling includes one below：High-level signaling, physical layer signaling.
ENB can notify UE to adjust uplink power according to above-mentioned corresponding relation in several ways, it is contemplated that change
Size and implementation difficulty, can preferably be notified using signaling, the signaling used can be high-level signaling also may be used
Think physical layer signaling.
Preferably, the closed loop power control command in above-mentioned corresponding relation is the closed power control of 1 bit and/or 2 bits
System order.
Closed loop power control command can be divided into the closed loop power control command of 1 bit and the close-loop power control of 2 bits
Order, in specific implementation process, the closed power of one of which as the case may be, can be reflected in above-mentioned corresponding relation
The corresponding relation of control command and power correction value, two kinds of closed loop power control commands and power correction value can also be reflected simultaneously
Corresponding relation.
As can be seen from the above description, technical scheme provided by the invention can effectively strengthen LTE/LTE-A systems
The closed power adjustment capability of system, effectively compensates for open loop path loss evaluated error, UE is reasonably controlled up letter
Number transmission power, ensure the transmission of UE upward signal, reduce the loss of UE batteries, reduce the interference to other users.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored
Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein
The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (8)
- A kind of 1. uplink signal power control method, it is characterised in that including：Establish the closed loop power control command and power correction for distributing antenna system and cooperative multipoint transmission CoMP system The corresponding relation of value；Base station eNB judges whether to use the correspondence according to the signal of the user equipment (UE) that each receiving node receives in network Relation controls the UE to carry out uplink power adjustment；In judged result for when being, the eNB notifies the UE to adjust uplink power according to the corresponding relation；Wherein, the closed loop power control command in the corresponding relation is the closed loop power control command of 1 bit and/or 2 bits.
- 2. according to the method for claim 1, it is characterised in that received in base station eNB according to each receiving node in network User equipment (UE) signal, judge whether that controlling the UE to carry out uplink power using the corresponding relation adjusts it Afterwards, in addition to：When judged result is no, the eNB notifies the UE according to general closed loop power control command and power correction value Corresponding relation adjustment uplink power, wherein, the general closed loop power control command is corresponding with power correction value Relation includes one below：Closed loop power control command and the corresponding relation of power correction value, Rel-9 versions LTE are marked in Rel-10 version LTE standards Closed loop power control command in closed loop power control command and the corresponding relation of power correction value, Rel-8 version LTE standards in standard With the corresponding relation of power correction value.
- 3. according to the method for claim 2, it is characterised in that the uplink power includes at least one of：Thing Manage Uplink Shared Channel PUSCH uplink power, Physical Uplink Control Channel PUCCH uplink power, measurement ginseng Examine signal SRS uplink power, Physical Random Access Channel PRACH uplink power, demodulated reference signal DMRS Uplink power.
- 4. according to the method for claim 3, it is characterised in that the eNB is by signaling the UE according to described right Adjustment uplink power should be related to, wherein the signaling includes one below：High-level signaling, physical layer signaling.
- A kind of 5. upward signal output control device, in base station eNB, it is characterised in that including：Using judge module, for the signal according to the user equipment (UE) that each receiving node receives in network, judge whether to make With pair of closed loop power control command and power correction value for distributing antenna system and cooperative multipoint transmission CoMP system It should be related to that the control UE carries out uplink power adjustment；First control module, for when the judged result using judge module is to be, notifying the UE according to described right Adjustment uplink power should be related to；Wherein, the closed loop power control command in the corresponding relation is the closed loop power control command of 1 bit and/or 2 bits.
- 6. device according to claim 5, it is characterised in that also include：Second control module, for when the judged result using judge module is no, notifying the UE according to general Closed loop power control command and the corresponding relation of power correction value adjustment uplink power, wherein, the general closed loop work( The corresponding relation of rate control command and power correction value includes one below：Close-loop power control in Rel-10 version LTE standards Closed loop power control command and pair of power correction value in the corresponding relation of order and power correction value, Rel-9 version LTE standards It should be related to, closed loop power control command and the corresponding relation of power correction value in Rel-8 version LTE standards.
- 7. device according to claim 6, it is characterised in that the uplink power includes at least one of：Thing Manage Uplink Shared Channel PUSCH uplink power, Physical Uplink Control Channel PUCCH uplink power, measurement ginseng Examine signal SRS uplink power, Physical Random Access Channel PRACH uplink power, demodulated reference signal DMRS Uplink power.
- 8. device according to claim 7, it is characterised in that first control module, for by signaling State UE and uplink power is adjusted according to the corresponding relation, wherein the signaling includes one below：High-level signaling, physical layer Signaling.
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| CN110430032B (en) * | 2013-04-12 | 2022-04-12 | 北京三星通信技术研究有限公司 | Uplink power control method in multi-subframe scheduling |
| KR20180080361A (en) | 2013-06-12 | 2018-07-11 | 콘비다 와이어리스, 엘엘씨 | Context and power control information management for proximity services |
| CN106170969B (en) | 2013-06-21 | 2019-12-13 | 康维达无线有限责任公司 | Context management |
| KR20160030970A (en) | 2013-07-10 | 2016-03-21 | 콘비다 와이어리스, 엘엘씨 | Context-aware proximity services |
| CN107623942B (en) * | 2016-07-14 | 2022-06-17 | 中兴通讯股份有限公司 | Method and device for adjusting uplink power |
| JP2019169748A (en) * | 2016-08-09 | 2019-10-03 | シャープ株式会社 | Terminal, base station device, communication method, and integrated circuit |
| CN108112065B (en) * | 2017-05-05 | 2023-09-26 | 中兴通讯股份有限公司 | Method and device for determining transmission power and configuring signaling, terminal and base station |
| CN112867121B (en) * | 2018-01-12 | 2022-06-10 | 中兴通讯股份有限公司 | Power control method, first communication node and second communication node |
| BR112019021143A2 (en) | 2018-01-19 | 2020-05-12 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | POWER CONTROL METHOD AND TERMINAL DEVICE |
| CN110784917B (en) * | 2018-07-30 | 2021-03-30 | 中国移动通信有限公司研究院 | Power control method and device, terminal and storage medium |
| CN115395994B (en) * | 2019-07-30 | 2024-03-05 | 中兴通讯股份有限公司 | Transmission method, device and computer readable storage medium |
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