CN104168635A - Uplink power control method and device - Google Patents
Uplink power control method and device Download PDFInfo
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- CN104168635A CN104168635A CN201410381269.9A CN201410381269A CN104168635A CN 104168635 A CN104168635 A CN 104168635A CN 201410381269 A CN201410381269 A CN 201410381269A CN 104168635 A CN104168635 A CN 104168635A
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Abstract
The embodiment of the invention discloses an uplink power control method and device and relates to the field of wireless communication. The uplink power control method and device are used for restraining interference in a neighbor cell from a terminal service cell in the prior art. The method includes the steps of receiving the signal intensity, measured and reported by a terminal, of the neighbor cell, determining path losses from the terminal to the neighbor cell according to the signal emitting intensity configured to the neighbor cell and the signal intensity, measured by the terminal, of the neighbor cell, determining the allowed maximum emitting power of the terminal according to the interference tolerance of the neighbor cell and the determined path losses, and controlling the uplink power of the terminal according to the allowed maximum emitting power of the terminal and current emitting power of the terminal. In this way, interference in the neighbor cell from the terminal service cell is restrained.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of ascending power control method and device.
Background technology
In LTE (Long Term Evolution, Long Term Evolution) system, uplink power control is the important part of RRM and affects systematic function and the key factor of capacity.The main purpose of uplink power control is that disturb slow variation, the minimizing adjacent area of compensate for channel environment.
Fig. 1 shows the schematic flow sheet of ascending power control method of the prior art, as shown in Figure 1, current uplink power control algorithm is mainly target SINR (the Signal to Interference plus Noise Ratio based on up, Signal to Interference plus Noise Ratio) to UE (User Equipment, terminal) up transmitting power control control, its main process is as follows:
Step 11: base station obtains the actual emission power P of UE
tXwith the actual received power P of described base station to this UE
receive, according to P
tXand P
receivedetermine the up path loss PL of this UE to base station
uL, i.e. PL
uL=P
tX-P
receive, wherein, P
receiveobtain P by base station measurement
tXin the PHR (Power Headroom Report, power headroom reporting (PHR)) reporting to base station by UE, obtain.
Step 12: base station is according to the up path loss PL determining
uLup expectation received power P0 with pre-configured UE, determines up target received power P
target(R), i.e. P
target(R)=P0+ (α-1) × PL
uL, wherein, α is path loss penalty coefficient, α and P0 pass through RRC (Radio Resource Control, radio resource control) signal deployment by upper strata.
Step 13: base station is according to the up target received power P determining
target(R) and up total interference power I+N of being subject to of the upper expection of each PRB, determine target SINR,
wherein, the uplink interference that base station is subject to comprises that thermal noise disturbs N and external disturbance I, up total interference power I+N that the upper expection of each PRB is subject to, and (I+N)=-174dBm/Hz+10*log (180KHz)+NoiseFigure+IOT (Thr), wherein, NoiseFigure is noise figure, the jamming margin that IOT (Thr) is community.
Step 14: base station to the target SINR determining and actual measurement to upstream sinr compare, carry out uplink power control according to comparative result.Concrete, base station to the target SINR determining and actual measurement to upstream sinr compare, when actual measurement to upstream sinr while being greater than the target SINR determining, produce through-put power control (TPC) command word of lower adjusting power, be used to indicate UE and lower transmitting power; When actual measurement to upstream sinr while being less than or equal to the target SINR determining, the TPC command word of adjusting power in generation, is used to indicate UE and raises transmitting power.
In the time that up total interference power of the fringe region of UE in Serving cell or this Serving cell is higher, in order to ensure the target SINR of this Serving cell, need constantly to raise the actual emission power of UE, when the transmitting power of UE is raised when too high, can cause very large interference to the neighbor cell of the Serving cell at this UE place.
Summary of the invention
The embodiment of the present invention provides a kind of ascending power control method, in order to suppress the Serving cell of terminal to the interference of neighbor cell.
A kind of ascending power control method, comprising:
The signal strength signal intensity of the neighbor cell that the described terminal that receiving terminal reports measures;
The signal strength signal intensity of the neighbor cell measuring to signal emissive porwer and the described terminal of described neighbor cell according to configuration, determines the path loss of described terminal to described neighbor cell;
According to the jamming margin of described neighbor cell and the path loss of determining, determine the maximum transmission power that described terminal is allowed to;
The maximum transmission power being allowed to according to described terminal and the current transmitting power of described terminal, carry out uplink power control to described terminal.
Can find out from such scheme, the embodiment of the present invention arrives the path loss of neighbor cell and the jamming margin IOT (Thr) of this neighbor cell according to UE, determine the maximum transmission power of this UE, and according to the maximum transmission power of UE, the ascending power of UE is retrained, due to the impact of having considered that in the time carrying out uplink power control the Serving cell at UE place is caused the interference of neighbor cell generation, in the time that the up total interference power of UE in Huo Gai Serving cell, the edge of Serving cell is higher, by the way the ascending power of UE is retrained, compared with prior art reduce the uplink interference that Serving cell produces neighbor cell.
Preferably, described according to the jamming margin of described neighbor cell and the path loss of determining, determine the maximum transmission power that described terminal is allowed to, comprise: according to the jamming margin of described neighbor cell, determine the upper maximum uplink interference gross power allowing of every Physical Resource Block PRB in the Serving cell of described terminal; According to the upper maximum uplink interference gross power allowing of described every PRB, the number of predefined neighbor cell, determine the maximum interference power that described neighbor cell allows on described every PRB; The maximum interference power allowing on described every PRB according to described neighbor cell and described path loss, determine the maximum transmission power that described terminal is allowed on described every PRB.Like this, the annoyance level of the Serving cell measuring in the A3 metrical information of the embodiment of the present invention based on terminal to neighbor cell, suppose that this neighbor cell may be subject in the situation of interference of n community, (number that n is predefined neighbor cell) determines the maximum transmission power that terminal is allowed to, and jamming margin based on neighbor cell calculates the maximum transmission power that this terminal is allowed to, avoid Serving cell unrestrictedly to raise transmitting power and interference that neighbor cell is produced.
Preferably, determine the upper maximum uplink interference gross power allowing of described every PRB according to following formula one, described formula one is:
(I+N)＝-174dBm/Hz+10*log(180KHz)+NoiseFigure+IOT(Thr)
Wherein, be (I+N) the upper maximum uplink interference gross power allowing of every PRB, wherein, I is interference power, N is thermal noise power, the jamming margin that IOT (Thr) is described neighbor cell, NoiseFigure is noise figure; Determine according to following formula two maximum interference power that described neighbor cell allows on described every PRB, described formula two is: P
(neibor, receive)=(I+N)-10*log (X) wherein, P
(neibor, receive)for the maximum interference power that described neighbor cell allows on described every PRB, the number that X is predefined neighbor cell; Determine according to following formula three maximum transmission power that described terminal is allowed on described every PRB, described formula three is: P
tX(max)=P
(neibor, receive)+ PL
neiborwherein, P
tX(max) maximum transmission power being allowed on described every PRB for described terminal, PL
neiborfor described path loss.Like this, the annoyance level of the Serving cell measuring in the A3 metrical information of the embodiment of the present invention based on terminal to neighbor cell, suppose that this neighbor cell may be subject in the situation of interference of n community, (number that n is predefined neighbor cell) determines the maximum transmission power that terminal is allowed to, and jamming margin based on neighbor cell calculates the maximum transmission power that this terminal is allowed to, avoid Serving cell unrestrictedly to raise transmitting power and interference that neighbor cell is produced.
Preferably, the described maximum transmission power being allowed to according to described terminal and the current transmitting power of described terminal, described terminal is carried out to uplink power control, comprise: if the current ascending power of described terminal is greater than the maximum transmission power that described terminal is allowed to, indicate described terminal to reduce current transmit power; If the current ascending power of described terminal equals the maximum transmission power that described terminal is allowed to, indicate described terminal to keep current transmit power.Like this, the embodiment of the present invention calculates according to the jamming margin based on neighbor cell the maximum transmission power that this terminal is allowed to, and the transmitting power that terminal is current is carried out to ascending power adjustment, thereby reduced the interference in the whole network.
Preferably, before the signal strength signal intensity of the neighbor cell that the described terminal reporting at receiving terminal measures, further comprise: configure described terminal and carry out the measurement of A3 event, and periodic report measurement report; The signal strength signal intensity of the neighbor cell that the described terminal that described receiving terminal reports measures, comprising: receive the A3 event measurement report of described terminal to report, obtain the signal strength signal intensity of the neighbor cell that the described terminal of carrying in described A3 event measurement report measures.Like this, what the embodiment of the present invention can the configurating terminal cycle reports A3 measurement report, has realized the process of the signal strength signal intensity of the neighbor cell that the reporting measurement of terminal periodic arrives.
A kind of uplink power control device, this device comprises:
Receiving element, the signal strength signal intensity of the neighbor cell that the described terminal reporting for receiving terminal measures;
Computing unit, for according to the signal strength signal intensity that configures the neighbor cell measuring to signal emissive porwer and the described terminal of described neighbor cell, determines the path loss of described terminal to described neighbor cell; According to the jamming margin of described neighbor cell and the path loss of determining, determine the maximum transmission power that described terminal is allowed to;
Uplink power control unit, for the maximum transmission power and the current transmitting power of described terminal that are allowed to according to described terminal, carries out uplink power control to described terminal.
Can find out from such scheme, the embodiment of the present invention arrives the path loss of neighbor cell and the jamming margin IOT (Thr) of this neighbor cell according to UE, determine the maximum transmission power of this UE, and according to the maximum transmission power of UE, the ascending power of UE is retrained, due to the impact of having considered that in the time carrying out uplink power control the Serving cell at UE place is caused the interference of neighbor cell generation, in the time that the up total interference power of UE in Huo Gai Serving cell, the edge of Serving cell is higher, by the way the ascending power of UE is retrained, compared with prior art reduce the uplink interference that Serving cell produces neighbor cell.
Preferably, described computing unit specifically for: according to the jamming margin of described neighbor cell, determine the upper maximum uplink interference gross power allowing of every Physical Resource Block PRB in the Serving cell of described terminal; According to the upper maximum uplink interference gross power allowing of described every PRB, the number of predefined neighbor cell, determine the maximum interference power that described neighbor cell allows on described every PRB; The maximum interference power allowing on described every PRB according to described neighbor cell and described path loss, determine the maximum transmission power that described terminal is allowed on described every PRB.Like this, the annoyance level of the Serving cell measuring in the A3 metrical information of the embodiment of the present invention based on terminal to neighbor cell, suppose that this neighbor cell may be subject in the situation of interference of n community, (number that n is predefined neighbor cell) determines the maximum transmission power that terminal is allowed to, and jamming margin based on neighbor cell calculates the maximum transmission power that this terminal is allowed to, avoid Serving cell unrestrictedly to raise transmitting power and interference that neighbor cell is produced.
Preferably, described computing unit specifically for: determine the upper maximum uplink interference gross power allowing of described every PRB according to following formula one, described formula one is: (I+N)=and-174dBm/Hz+10*log (180KHz)+NoiseFigure+IOT (Thr) is wherein, (I+N) be the upper maximum uplink interference gross power allowing of every PRB, wherein, I is interference power, N is thermal noise power, the jamming margin that IOT (Thr) is described neighbor cell, NoiseFigure is noise figure; Determine according to following formula two maximum interference power that described neighbor cell allows on described every PRB, described formula two is: P
(neibor, receive)=(I+N)-10*log (X) wherein, P
(neibor, receive)for the maximum interference power that described neighbor cell allows on described every PRB, the number that X is described predefined neighbor cell; Determine according to following formula three maximum transmission power that described terminal is allowed on described every PRB, described formula three is: P
tX(max)=P
(neibor, receive)+ PL
neiborwherein, P
tX(max) maximum transmission power being allowed on described every PRB for described terminal, PL
neiborfor described path loss.Like this, the annoyance level of the Serving cell measuring in the A3 metrical information of the embodiment of the present invention based on terminal to neighbor cell, suppose that this neighbor cell may be subject in the situation of interference of n community, (number that n is predefined neighbor cell) determines the maximum transmission power that terminal is allowed to, and jamming margin based on neighbor cell calculates the maximum transmission power that this terminal is allowed to, avoid Serving cell unrestrictedly to raise transmitting power and interference that neighbor cell is produced.
Preferably, described uplink power control unit specifically for, if the current ascending power of described terminal is greater than the maximum transmission power that described terminal is allowed to, indicate described terminal to reduce current transmit power; If the current ascending power of described terminal equals the maximum transmission power that described terminal is allowed to, indicate described terminal to keep current transmit power.Like this, the embodiment of the present invention calculates according to the jamming margin based on neighbor cell the maximum transmission power that this terminal is allowed to, and the transmitting power that terminal is current is carried out to ascending power adjustment, thereby reduced the interference in the whole network.
Preferably, this device also comprises: dispensing unit, and before the signal strength signal intensity of the neighbor cell measuring for the described terminal reporting at receiving terminal, configure described terminal and carry out the measurement of A3 event, and periodic report measurement report; Described receiving element also for, receive the A3 event measurement report of described terminal to report, obtain the signal strength signal intensity of the neighbor cell that the described terminal of carrying in described A3 event measurement report measures.Like this, what the embodiment of the present invention can the configurating terminal cycle reports A3 measurement report, has realized the process of the signal strength signal intensity of the neighbor cell that the reporting measurement of terminal periodic arrives.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet of ascending power control method of the prior art;
The schematic flow sheet of a kind of ascending power control method that Fig. 2 provides for the embodiment of the present invention;
The structural representation of a kind of uplink power control device that Fig. 3 provides for the embodiment of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention can be applicable to LTE system architecture, is particularly useful for the uplink power control scene in LTE system.A3 event in the embodiment of the present invention is the Event A3 in LTE handover event, and for representing when homogeneous-frequency adjacent-domain quality is during higher than Serving cell quality, when the event that meets this condition is reported, source base station (eNodeB) starts with frequency handover request.
The ascending power control method that the embodiment of the present invention provides is based on A3 affair information, judge the path loss of terminal position and neighbor cell by A3 affair information, also the jamming margin IOT (Thr) based on neighbor cell calculates the maximum transmission power that this terminal is allowed by neighbor cell, visible, the embodiment of the present invention is utilized above-mentioned constraints, ascending power is controlled, the interference of having avoided Serving cell unrestrictedly to raise transmitting power and to cause neighbor cell, thus the uplink interference between the whole network reduced.
Fig. 2 shows a kind of ascending power control method that the embodiment of the present invention provides, and as shown in Figure 2, below the embodiment of the present invention is specifically described.
Step 21: the signal strength signal intensity of the neighbor cell that this terminal that receiving terminal reports measures.
Preferably, before above-mentioned steps 21, configure described terminal and carry out the measurement of A3 event, and periodic report measurement report; The signal strength signal intensity of the neighbor cell that the described terminal that described receiving terminal reports measures, comprising: receive the A3 event measurement report of described terminal to report, obtain the signal strength signal intensity of the neighbor cell that the described terminal of carrying in described A3 event measurement report measures.
When specific implementation, base station configurating terminal reports the A3 event for position measurement, and configurating terminal carries out periodic report A3 event measurement report.Base station receives the A3 event measurement report that terminal reports in Serving cell, obtains the signal strength signal intensity of Serving cell and the signal strength signal intensity of neighbor cell that the terminal of carrying in A3 event measurement report measures.It should be noted that, in the time meeting neighbor cell measurement condition and report condition, terminal is just measured and reports for the neighbor cell that meets above-mentioned condition.
Step 22: the signal strength signal intensity of the neighbor cell measuring to signal emissive porwer and the described terminal of described neighbor cell according to configuration, determine the path loss of described terminal to described neighbor cell.
When specific implementation, base station can, in the time that adjacent section planning configures, be configured the signal emissive porwer of neighbor cell, obtains the signal emissive porwer of configuration to these neighbor cells.
When specific implementation, when specific implementation, base station can, in the time that adjacent section planning configures, be configured the signal emissive porwer of neighbor cell.Configure to the signal emissive porwer of neighbor cell and the signal strength signal intensity of this neighbor cell that terminal measures in above-mentioned steps 21 according to base station, determine that terminal arrives the path loss of this neighbor cell, that is, and PL
(neibor)=RSRP
(neibor, eNB)-RSRP
(neibor, UE)wherein, PL
(neibor)for determining the path loss obtaining, RSRP
(neibor, eNB)for base station configures the signal emissive porwer to this neighbor cell, RSRP
(neibor, UE)the signal strength signal intensity of this neighbor cell measuring for terminal.
Step 23: according to the jamming margin of neighbor cell and the path loss of determining, determine the maximum transmission power that this terminal is allowed to.
Preferably, in above-mentioned steps 23, according to the jamming margin of neighbor cell, determine the upper maximum uplink interference gross power allowing of every Physical Resource Block PRB in the Serving cell of described terminal; According to the upper maximum uplink interference gross power allowing of described every PRB, the number of predefined neighbor cell, determine the maximum interference power that described neighbor cell allows on described every PRB; The maximum interference power allowing on described every PRB according to described neighbor cell and described path loss, determine the maximum transmission power that described terminal is allowed on described every PRB.
Preferably, in above-mentioned steps 23, determine the upper maximum uplink interference gross power allowing of described every PRB according to following formula one, described formula one is: (I+N)=and-174dBm/Hz+10*log (180KHz)+NoiseFigure+IOT (Thr) is wherein, (I+N) be the upper maximum uplink interference gross power allowing of every PRB, wherein, I is interference power, N is thermal noise power, the jamming margin that IOT (Thr) is described neighbor cell, NoiseFigure is noise figure; Determine according to following formula two maximum interference power that described neighbor cell allows on described every PRB, described formula two is: P
(neibor, receive)=(I+N)-10*log (X) wherein, P
(neibor, receive)for the maximum interference power that described neighbor cell allows on described every PRB, the number that X is predefined neighbor cell; Determine according to following formula three maximum transmission power that described terminal is allowed on described every PRB, described formula three is: P
tX(max)=P
(neibor, receive)+ PL
neiborwherein, P
tX(max) maximum transmission power being allowed on described every PRB for described terminal, PL
neiborfor described path loss.
When specific implementation, base station can, in the time that adjacent section planning configures, be configured the jamming margin IOT (Thr) of neighbor cell.According to the jamming margin IOT (Thr) of neighbor cell, determine the upper maximum uplink interference gross power allowing of every Physical Resource Block PRB in the Serving cell of terminal, i.e. (I+N)=-174dBm/Hz+10*log (180KHz)+NoiseFigure+IOT (Thr) wherein, (I+N) be the upper maximum uplink interference gross power allowing of every PRB, NoiseFigure is noise figure, and NoiseFigure=7 in embodiments of the present invention, the jamming margin that IOT (Thr) is neighbor cell; Further, consider that this neighbor cell may be subject to the interference of multiple communities, P simultaneously
(neibor, receive)=(I+N)-10*log (X) wherein, P
(neibor, receive)the maximum interference power allowing on described every PRB for described neighbor cell, (I+N) be the upper maximum uplink interference gross power allowing of every PRB, X is the number of predefined neighbor cell, and the span of the number of described predefined neighbor cell is 0～5; Further, maximum interference power and the described path loss that can on described every PRB, allow according to described neighbor cell, determine the maximum transmission power that described terminal is allowed on described every PRB, i.e. P
tX(max)=P
(neibor, receive)+ PL
neiborwherein, P
tX(max) maximum transmission power being allowed on described every PRB for described terminal, PL
neiborfor the path loss calculating by above-mentioned steps 22.
Step 24: the maximum transmission power being allowed to according to this terminal and the current transmitting power of this terminal, this terminal is carried out to uplink power control.
Preferably, in above-mentioned steps 24, if the current ascending power of described terminal is greater than the maximum transmission power that described terminal is allowed to, indicate described terminal to reduce current transmit power; If the current ascending power of described terminal equals the maximum transmission power that described terminal is allowed to, indicate described terminal to keep current transmit power.
When specific implementation, base station judges the magnitude relationship of the maximum transmission power that ascending power that terminal is current and this terminal allowed by neighbor cell, according to judged result, the ascending power of terminal is controlled,, if when the current ascending power of terminal is less than the maximum transmission power that this terminal allowed by neighbor cell, carry out uplink power control according to the mode that in prior art, the target SINR based on up controls the ascending power of terminal; If when the current ascending power of terminal is greater than the maximum transmission power that this terminal allowed by neighbor cell, base station indicating terminal degradation transmitting power, concrete, base station can send to this terminal the order of TPC command word δ=-1, with indicating terminal degradation transmitting power; If when the current ascending power of terminal equals maximum transmission power that this terminal allowed by neighbor cell, base station indicating terminal keeps current transmit power, concrete, base station can send to this terminal the order of TPC command word δ=0, keeps current transmit power with indicating terminal.
The embodiment of the present invention exists 5 communities that a certain specific cell (below this specific cell being expressed as to community S) produced and disturbed as example taking hypothesis, and the process of carrying out uplink power control is described in detail.
First, base station is configured each community of this BTS management.Base station is by the signal emissive porwer RSRP of each community of this BTS management
(neibor, eNB)be configured to 15dBm, the jamming margin IOT (Thr) of each community of this BTS management is configured to 10dB, and noise figure NoiseFigure be set to 7dB.
Then, the A3 event measurement report that base station receiving terminal reports, the signal strength signal intensity RSRP of the Serving cell that in report, carried terminal measures
(neibor, UE)=-80dBm, the signal strength signal intensity RSRP of the community S measuring
(neibor)=-85dBm.
In the embodiment of the present invention, Serving cell, terminal place to the interference of community S is-85dBm, supposes the community that also exists 4 to have same disturbance, therefore, to suppose X=5, can obtain like this: terminal is PL to the path loss of community S
(neibor)=RSRP
(neibor, eNB)-RSRP
(ceibor, UE)=15dB-(85dB)=-100dBm, meanwhile, P
(neibor, receive)=(I+N)-10*log (X)=-174dBm/Hz+10*log (180KHz)+7dB+10dB-10*log (5)=-111dBm so, P
tX(max)=P
(neibor, receive)+ PL
neibor=(111dBm)+100dBm=-11dBm
The embodiment of the present invention can judge the above-mentioned P calculating
tX(max) the transmitting power P current with terminal
tX(i) magnitude relationship, carries out uplink power control to this terminal, that is:
Work as P
tX(max) <P
tX(i), time, according to prior art, terminal is carried out to uplink power control;
Work as P
tX(max) >P
tX(i), time, make TPC command word δ=-1;
Work as P
tX(max)=P
tX(i), time, make TPC command word δ=0.
Visible, the embodiment of the present invention arrives the path loss of neighbor cell and the jamming margin IOT (Thr) of this neighbor cell according to UE, determine the maximum transmission power of this UE, and according to the maximum transmission power of UE, the ascending power of UE is retrained, due to the impact of having considered that in the time carrying out uplink power control the Serving cell at UE place is caused the interference of neighbor cell generation, in the time that the up total interference power of UE in Huo Gai Serving cell, the edge of Serving cell is higher, by the way the ascending power of UE is retrained, compared with prior art reduce the uplink interference that Serving cell produces neighbor cell.The method that the embodiment of the present invention provides, compared with existing uplink power control algorithm, in the time producing TPC command word with reference to the current position of UE (, consider the path loss of UE to neighbor cell) and the uplink transmission power of UE uplink interference situation that neighbor cell is produced, thus by being controlled, the maximum transmission power of UE suppresses up between adjacent area and the whole network.
Based on identical technical conceive, the embodiment of the present invention also provides a kind of uplink power control device that can be applicable to above-mentioned flow process.With reference to Fig. 3, this device comprises:
Receiving element 31, the signal strength signal intensity of the neighbor cell that the described terminal reporting for receiving terminal measures;
Computing unit 32, for according to the signal strength signal intensity that configures the neighbor cell measuring to signal emissive porwer and the described terminal of described neighbor cell, determines the path loss of described terminal to described neighbor cell; According to the jamming margin of described neighbor cell and the path loss of determining, determine the maximum transmission power that described terminal is allowed to;
Uplink power control unit 33, for the maximum transmission power and the current transmitting power of described terminal that are allowed to according to described terminal, carries out uplink power control to described terminal.
Preferably, described computing unit 32 specifically for: according to the jamming margin of described neighbor cell, determine the upper maximum uplink interference gross power allowing of every Physical Resource Block PRB in the Serving cell of described terminal; According to the upper maximum uplink interference gross power allowing of described every PRB, the number of predefined neighbor cell, determine the maximum interference power that described neighbor cell allows on described every PRB; The maximum interference power allowing on described every PRB according to described neighbor cell and described path loss, determine the maximum transmission power that described terminal is allowed on described every PRB.
Preferably, described computing unit 32 specifically for: determine the upper maximum uplink interference gross power allowing of described every PRB according to following formula one, described formula one is: (I+N)=and-174dBm/Hz+10*log (180KHz)+NoiseFigure+IOT (Thr) is wherein, (I+N) be the upper maximum uplink interference gross power allowing of every PRB, wherein, I is interference power, N is thermal noise power, the jamming margin that IOT (Thr) is described neighbor cell, NoiseFigure is noise figure; Determine according to following formula two maximum interference power that described neighbor cell allows on described every PRB, described formula two is: P
(neibor, receive)=(I+N)-10*log (X) wherein, P
(neibor, receive)for the maximum interference power that described neighbor cell allows on described every PRB, the number that X is predefined neighbor cell; Determine according to following formula three maximum transmission power that described terminal is allowed on described every PRB, described formula three is: P
tX(max)=P
(neibor, receive)+ PL
neiborwherein, P
tX(max) maximum transmission power being allowed on described every PRB for described terminal, PL
neiborfor described path loss.
Preferably, described uplink power control unit 33 specifically for, if the current ascending power of described terminal is greater than the maximum transmission power that described terminal is allowed to, indicate described terminal to reduce current transmit power; If the current ascending power of described terminal equals the maximum transmission power that described terminal is allowed to, indicate described terminal to keep current transmit power.
Preferably, this device also comprises: dispensing unit, and before the signal strength signal intensity of the neighbor cell measuring for the described terminal reporting at receiving terminal, configure described terminal and carry out the measurement of A3 event, and periodic report measurement report; Described receiving element 31 also for, receive the A3 event measurement report of described terminal to report, obtain the signal strength signal intensity of the neighbor cell that the described terminal of carrying in described A3 event measurement report measures.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.The processor of these computer program instructions to all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device can be provided, make the function of specifying in a flow process in can realization flow figure of instruction that the processor by this computer or other programmable data processing device carries out or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or a square frame of multiple flow process and/or block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. an ascending power control method, is characterized in that, the method comprises:
The signal strength signal intensity of the neighbor cell that the described terminal that receiving terminal reports measures;
The signal strength signal intensity of the neighbor cell measuring to signal emissive porwer and the described terminal of described neighbor cell according to configuration, determines the path loss of described terminal to described neighbor cell;
According to the jamming margin of described neighbor cell and the path loss of determining, determine the maximum transmission power that described terminal is allowed to;
The maximum transmission power being allowed to according to described terminal and the current transmitting power of described terminal, carry out uplink power control to described terminal.
2. the method for claim 1, is characterized in that, describedly determines according to the jamming margin of described neighbor cell and the path loss determined the maximum transmission power that described terminal is allowed to, and comprising:
According to the jamming margin of described neighbor cell, determine the upper maximum uplink interference gross power allowing of every Physical Resource Block PRB in the Serving cell of described terminal;
According to the upper maximum uplink interference gross power allowing of described every PRB, the number of predefined neighbor cell, determine the maximum interference power that described neighbor cell allows on described every PRB;
The maximum interference power allowing on described every PRB according to described neighbor cell and described path loss, determine the maximum transmission power that described terminal is allowed on described every PRB.
3. method as claimed in claim 2, is characterized in that, determines the upper maximum uplink interference gross power allowing of described every PRB according to following formula one, and described formula one is:
(I+N)＝-174dBm/Hz+10*log(180KHz)+NoiseFigure+IOT(Thr)
Wherein, be (I+N) the upper maximum uplink interference gross power allowing of every PRB, I is interference power, N is thermal noise power, the jamming margin that IOT (Thr) is described neighbor cell, NoiseFigure is noise figure;
Determine according to following formula two maximum interference power that described neighbor cell allows on described every PRB, described formula two is:
P
(neibor,receive)＝(I+N)-10*log(X)
Wherein, P
(neibor, receive)for the maximum interference power that described neighbor cell allows on described every PRB, the number that X is described predefined neighbor cell;
Determine according to following formula three maximum transmission power that described terminal is allowed on described every PRB, described formula three is:
P
TX(max)＝P
(neibor,receive)+PL
neibor
Wherein, P
tX(max) maximum transmission power being allowed on described every PRB for described terminal, PL
neiborfor described path loss.
4. the method for claim 1, is characterized in that, the described maximum transmission power being allowed to according to described terminal and the current transmitting power of described terminal, carry out uplink power control to described terminal, comprising:
If the current ascending power of described terminal is greater than the maximum transmission power that described terminal is allowed to, indicate described terminal to reduce current transmit power;
If the current ascending power of described terminal equals the maximum transmission power that described terminal is allowed to, indicate described terminal to keep current transmit power.
5. the method as described in any one in claim 1-4, is characterized in that, before the signal strength signal intensity of the neighbor cell that the described terminal reporting at receiving terminal measures, further comprises:
Configure described terminal and carry out the measurement of A3 event, and periodic report measurement report;
The signal strength signal intensity of the neighbor cell that the described terminal that described receiving terminal reports measures, comprising:
Receive the A3 event measurement report of described terminal to report, obtain the signal strength signal intensity of the neighbor cell that the described terminal of carrying in described A3 event measurement report measures.
6. a uplink power control device, is characterized in that, this device comprises:
Receiving element, the signal strength signal intensity of the neighbor cell that the described terminal reporting for receiving terminal measures;
Computing unit, for according to the signal strength signal intensity that configures the neighbor cell measuring to signal emissive porwer and the described terminal of described neighbor cell, determines the path loss of described terminal to described neighbor cell; According to the jamming margin of described neighbor cell and the path loss of determining, determine the maximum transmission power that described terminal is allowed to;
Uplink power control unit, for the maximum transmission power and the current transmitting power of described terminal that are allowed to according to described terminal, carries out uplink power control to described terminal.
7. device as claimed in claim 6, is characterized in that, described computing unit specifically for,
According to the jamming margin of described neighbor cell, determine the upper maximum uplink interference gross power allowing of every Physical Resource Block PRB in the Serving cell of described terminal; According to the upper maximum uplink interference gross power allowing of described every PRB, the number of predefined neighbor cell, determine the maximum interference power that described neighbor cell allows on described every PRB; The maximum interference power allowing on described every PRB according to described neighbor cell and described path loss, determine the maximum transmission power that described terminal is allowed on described every PRB.
8. device as claimed in claim 7, is characterized in that, described computing unit specifically for,
Determine the upper maximum uplink interference gross power allowing of described every PRB according to following formula one, described formula one is:
(I+N)＝-174dBm/Hz+10*log(180KHz)+NoiseFigure+IOT(Thr)
Wherein, be (I+N) the upper maximum uplink interference gross power allowing of every PRB, I is interference power, N is thermal noise power, the jamming margin that IOT (Thr) is described neighbor cell, NoiseFigure is noise figure;
Determine according to following formula two maximum interference power that described neighbor cell allows on described every PRB, described formula two is:
P
(neibor,receive)＝(I+N)-10*log(X)
Wherein, P
(neibor, receive)for the maximum interference power that described neighbor cell allows on described every PRB, the number that X is described predefined neighbor cell;
Determine according to following formula three maximum transmission power that described terminal is allowed on described every PRB, described formula three is:
P
TX(max)＝P
(neibor,receive)+PL
neibor
Wherein, P
tX(max) maximum transmission power being allowed on described every PRB for described terminal, PL
neiborfor described path loss.
9. device as claimed in claim 6, is characterized in that, described uplink power control unit specifically for,
If the current ascending power of described terminal is greater than the maximum transmission power that described terminal is allowed to, indicate described terminal to reduce current transmit power; If the current ascending power of described terminal equals the maximum transmission power that described terminal is allowed to, indicate described terminal to keep current transmit power.
10. the device as described in any one in claim 6-9, is characterized in that, this device also comprises:
Dispensing unit, before the signal strength signal intensity of the neighbor cell measuring for the described terminal reporting at receiving terminal, configures described terminal and carries out the measurement of A3 event, and periodic report measurement report;
Described receiving element also for, receive the A3 event measurement report of described terminal to report, obtain the signal strength signal intensity of the neighbor cell that the described terminal of carrying in described A3 event measurement report measures.
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| CN201410381269.9A CN104168635B (en) | 2014-08-05 | 2014-08-05 | A kind of ascending power control method and device |
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| CN110401967A (en) * | 2018-04-25 | 2019-11-01 | 中国移动通信有限公司研究院 | A kind of information processing method, device, base station and computer storage medium |
| CN111163488A (en) * | 2018-11-07 | 2020-05-15 | 中国移动通信集团四川有限公司 | Method, device and equipment for positioning cell interference source and computer storage medium |
| CN111294815A (en) * | 2018-12-06 | 2020-06-16 | 中国移动通信集团陕西有限公司 | Method and device for determining uplink limitation |
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| WO2019028898A1 (en) * | 2017-08-11 | 2019-02-14 | 华为技术有限公司 | Power control method, network device and terminal device |
| CN109788538A (en) * | 2017-11-14 | 2019-05-21 | 华为技术有限公司 | Communication means and device |
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| CN111163488A (en) * | 2018-11-07 | 2020-05-15 | 中国移动通信集团四川有限公司 | Method, device and equipment for positioning cell interference source and computer storage medium |
| CN111294815A (en) * | 2018-12-06 | 2020-06-16 | 中国移动通信集团陕西有限公司 | Method and device for determining uplink limitation |
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