CN103281768B - A kind of CRS power determining method and equipment - Google Patents
A kind of CRS power determining method and equipment Download PDFInfo
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- CN103281768B CN103281768B CN201310236653.5A CN201310236653A CN103281768B CN 103281768 B CN103281768 B CN 103281768B CN 201310236653 A CN201310236653 A CN 201310236653A CN 103281768 B CN103281768 B CN 103281768B
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Abstract
The invention discloses a kind of CRS power determining method and equipment, the method comprises: determine the CRS power that community is corresponding; Determine the PRB position that the central user of community is dispatched and the 2nd PRB position that the edge customer of community is dispatched; The CRS power of determining a PRB position is that CRS power corresponding to community deducts default the first power, and determines that the CRS power of the 2nd PRB position is that CRS power corresponding to community adds default the second power. In the embodiment of the present invention, by the CRS power of different frequency domain positions is divided and is arranged, do not affecting under the prerequisite of RRU emitting performance, ensure the transmitting power of cell level knowledge scheduling, improve the coverage of community, improved the power of cell edge beam shaping user URS power, PDCCH and PDSCH, be conducive to improve beam shaping user's downlink signal quality, and improve the spectrum efficiency of cell edge, maintained the handling capacity of whole system simultaneously.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of CRS power determining method and equipment.
Background technology
LTE(LongTermEvolution, Long Term Evolution) in system, descending employing OFDM(OrthogonalFrequencyDivisionMultiplexing, OFDM) technology, in resource division, existPRB(PhysicalResourceBlock, Physical Resource Block), RE(ResourceElement resource listUnit) and the concept such as OFDM symbol. As shown in Figure 1, for downlink physical resource schematic diagram, with the most frequently usedThe LTE bandwidth of cell of 20M is example, and it is 0.5ms that a PRB is defined as in time domain, is 180KHz on frequency domain,In Fig. 1, identify with thick line square frame; A RE is defined as in time domain as between the each OFDM symbol of 15KHz(Every), on frequency domain, be an OFDM symbol lengths, arrow indication region in Fig. 1; The OFDM of a time slotNumber of symbols depends on CP(CyclicPrefix, Cyclic Prefix) length and subcarrier spacing, according to conventionallyThe conventional CP of situation and 15KHz subcarrier spacing calculate, and a time slot has 7 OFDM symbols, i.e. REIn time domain, be 1/14ms, and each OFDM symbol occupy whole system bandwidth on frequency domain.
In the bandwidth of cell of 20M, calculate according to two antenna ports, comprising CRS(CellReferenceSignal, cell reference signals) OFDM symbol in, each symbol comprises 400 CRSREAnd 800 data RE; In addition, do not comprise in the OFDM symbol of CRS at other, each symbol comprises1200 data RE; Wherein, under conventionally configuring, the power of CRSRE and data RE equates.
The PHY regulation of LTE system: UE(UserEquipment, subscriber equipment) can supposeDescending cell-specific reference symbol EPRE(EnergyPerResourceElement, the energy of every resource particleAmount) constant in whole downlink system bandwidth, and supposition is constant in all subframes, until receiveThe special RS(ReferenceSignal in different districts, reference signal) power information. Wherein, descending referenceSignal EPRE can obtain from downlink reference signal through-put power, and the definition of downlink reference signal through-put powerFor the linear average of the resource particle power of all carrying cell-specific reference informations in system bandwidth.
As shown in Figure 2, be the schematic diagram of a PRB to interior CRSRE and data RE, at each OFDMRE in symbol is upper, and the data RE in the symbol that comprises CRSRE and the power ratio of CRSRE are defined asρB, do not comprise data RE in the symbol of CRSRE and the power ratio of CRSRE and be defined as ρA; Wherein,ρ is indicated by high-level signaling in communityB/ρAAdjust the relation between different RE power. As shown in table 1, for4 kinds of ρ of agreement regulationB/ρARatio, and by parameter by ρB/ρARatio send to UE.
Table 1
ICIC(Inter-CellInterferenceCoordination, Inter-Cell Interference Coordination) criterion of designBe that not reduce or reduce by a small margin community total throughout be cost, improve the handling capacity of edge customer. ForImprove the handling capacity of edge customer, can increase the RB(ResourceBlock of edge customer, physical resourcePiece) number, but this mode can reduce the available RB number of central user, and reduces handling up of central userAmount (when system loading is higher), community total throughout decreases; For improving the handling capacity of edge customer,Also can improve the SINR(SignaltoInterferenceplusNoiseRatio of edge customer, signal and interferencePlus noise ratio), use the RB resource of same position at this Cell Edge User with disturbing adjacent area central userTime, disturb transmitting power when higher (load) of center, adjacent area RB resource or do not launch (negative by reductionWhen lotus is lower) reduce adjacent area interference, but the transmitting power of center, adjacent area RB resource is disturbed in reduction,Be easy to cause the SINR that disturbs adjacent area central user, thereby reduce central user and community total throughout.In a word, when system loading is lower, ICIC can improve the handling capacity of Cell Edge User, and not obvious sacrificialDomestic animal community total throughout, to be applicable to throughput of system low for ICIC, and cell load changes scene slowly.
Wave beam forming is the Signal Pretreatment technology based on aerial array, and it is every by adjusting in aerial arrayThe weight coefficient of individual array element produces has the wave beam of directive property, thereby obtains obvious array gain, thereforeWave beam forming technology is being expanded the coverage area, is being improved edge handling capacity and disturbing the aspects such as inhibition to have veryLarge advantage. In LTER8, define transmission mode 7(TM7), to support the wave beam tax based on dedicated pilotShape technology; In LTER9, wave beam forming is expanded to stream transmission (TM8), to realize wave beam forming and skyBetween multiplexing combination. In wave beam forming technology, UE passes through URS(UE-specificReferenceSignal,UE DRS (Dedicated Reference Signal)) demodulation is through the PDSCH(PhysicalDownlinkShared of wave beam formingChannel, Physical Downlink Shared Channel). Wherein, the URS of TM7 adopts port5 transmission, the time-frequency of URSPosition as shown in Figure 3; The URS of TM8 adopts port7/8 transmission, and the time-frequency position of URS as shown in Figure 4.
The lifting of RS transmitting power refers to the merit of descending public reference signal with respect to data channel PDSCHRate promotes, and is a kind of technical scheme that improves Cell Edge User business experience, and general thinking is to improveThe power of cell reference signals CRS; Or the power of certain a part of PRB in whole bandwidth is improved, to reachArrive the effect of the signal to noise ratio that improves Cell Edge User; In prior art, can be by different ρ be setB/ρA'sRatio, arranges the different expense ratios of RS signal in general power, to realize the lifting of RS transmitting power.
Realizing in process of the present invention, inventor finds at least to exist in prior art following problem:
According to four kinds of ρ of agreement regulationB/ρARatio, as shown in Figure 5, be these 4 kinds of different ρB/ρAUnder configurationThe schematic diagram of RE power, as can see from Figure 5, only comprise the RE power in the symbol of CRSREThere is variation, although this scheme has improved cell coverage area, for edge customer, MIMO(Multiple-InputMultiple-Output, multiple-input and multiple-output) mode has been adapted to beam shaping,And the demodulation of beam shaping depends on user's DRS (Dedicated Reference Signal) URS; By with the time-frequency position versus of CRSKnown, no matter be port5, or the URS of port7/port8 is positioned at the OFDM symbol that does not comprise CRS,And above four kinds of ρB/ρASight in, the RE power of the OFDM symbol at URS place does not get a promotion,Therefore the lifting scheme of existing RS transmitting power does not promote effect to the MIMO mode of beam shaping,Therefore can not improve the user's who has been switched to beam shaping handling capacity. In addition carry merely if adopted,The method of high CRS power, supposes that CRS improves 3db, and the URS of wave beam forming and PDSCH also improve 3db,Even PDCCH(PhysicalDownlinkControlChannel, Physical Downlink Control Channel) asynchronousHoisting power, the bandwidth resources that also have half are at least unavailable, cause the significant wastage of system resource.
Summary of the invention
The embodiment of the present invention provides a kind of CRS power determining method and equipment, to improve the covering of communityScope, and improve the spectrum efficiency of cell edge.
In order to achieve the above object, the embodiment of the present invention provides a kind of cell reference signals CRS power reallyDetermine method, comprising:
Determine the CRS power that community is corresponding;
Determine the first Physical Resource Block PRB position and right that the central user of described community is dispatchedThe 2nd PRB position that the edge customer of described community is dispatched;
The CRS power of determining a described PRB position is that CRS power corresponding to described community deducts in advanceIf the first power, and determine that the CRS power of described the 2nd PRB position is CRS corresponding to described communityPower adds default the second power; Wherein, described the first power is greater than 0, and described the second power is greater than 0.
The embodiment of the present invention provides a kind of cell reference signals CRS power locking equipment really, comprising:
The first determination module, for determining CRS power corresponding to community;
The second determination module, for determining the first physics money that the central user of described community is dispatchedPiece PRB position, source and the 2nd PRB position that the edge customer of described community is dispatched;
The 3rd determination module is described community correspondence for the CRS power of determining a described PRB positionCRS power deduct default the first power, and determine that the CRS power of described the 2nd PRB position is instituteState CRS power corresponding to community and add default the second power;
Wherein, described the first power is greater than 0, and described the second power is greater than 0.
Compared with prior art, the embodiment of the present invention at least has the following advantages: in the embodiment of the present invention,By the CRS power of different frequency domain positions is divided and is arranged, do not affecting RRU(RadioRemoteUnit, wireless radiofrequency extension unit) under the prerequisite of emitting performance, ensure the transmitting of cell level knowledge schedulingPower, has improved the coverage of community, has improved cell edge beam shaping user's URS power,The power of PDCCH and PDSCH, is conducive to improve beam shaping user's downlink signal quality, andImprove the spectrum efficiency of cell edge, maintained the handling capacity of whole system simultaneously. In addition, by knotClose ICIC technology, reduce power to central user, and the Partial Power of reduction is compensated to edge customer,Make the high power of beam shaping not affect the signal quality of adjacent cell edge customer, promoted edge useThe user at family experiences.
Brief description of the drawings
In order to be illustrated more clearly in technical scheme of the present invention, required making in describing embodiment belowWith accompanying drawing be briefly described, apparently, the accompanying drawing in the following describes is only of the present invention oneA little embodiment, for those of ordinary skill in the art, are not paying under the prerequisite of creative work,Can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of downlink physical resource of the prior art;
Fig. 2 is the schematic diagram of a PRB of the prior art to interior CRSRE and data RE;
Fig. 3 is the schematic diagram of the time-frequency position of the URS of TM7 of the prior art;
Fig. 4 is the schematic diagram of the time-frequency position of the URS of TM8 of the prior art;
Fig. 5 is 4 kinds of different ρ in prior artB/ρAThe schematic diagram of the RE power under configuration;
Fig. 6 is a kind of CRS power determining method schematic flow sheet that the embodiment of the present invention one provides;
Fig. 7 is the application scenarios schematic diagram of determining PRB position in the embodiment of the present invention one;
Fig. 8 is a kind of CRS power locking equipment structural representation really that the embodiment of the present invention two provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is carried out clearly and completelyDescribe, obviously, described embodiment is only a part of embodiment of the present invention, instead of wholeEmbodiment. Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative laborAll other embodiment that obtain under moving prerequisite, belong to the scope of protection of the invention.
Embodiment mono-
For problems of the prior art, in conjunction with ICIC principle, it is a kind of that the embodiment of the present invention one providesCRS power determining method, as shown in Figure 6, the method comprises the following steps:
Step 601, determines the CRS power that community is corresponding. For example, the whole CRS in whole community is being setWhen power is power A, can directly determine that CRS power corresponding to community is power A.
In a kind of specific implementation of the embodiment of the present invention, network equipment (as base station equipment) alsoNeed to pass through SIB(SystemInformationBlock, system information block) message is CRS corresponding communityPower is broadcasted away, so that each UE can obtain CRS power corresponding to this community.
Step 602, determines that the PRB position that the central user of community is dispatched (can be referred to asFor Pcenter), the 2nd PRB position that the edge customer of community is dispatched (can be referred to as Pedge)、And the 3rd PRB position that the cell level knowledge of community is dispatched (can be referred to as Psys）。
Wherein, this cell level knowledge includes but not limited to one of following or any combination: PSS(PrimarySynchronizedSignal, master sync signal), SSS(SecondarySynchronizedSignal, auxiliarySynchronizing signal), MIB(MasterInformationBlock, Master Information Block), SIB(SystemInformationBlock, system information block), paging information (Paging), accidental access response information (msg2 message).
In the embodiment of the present invention, whole frequency domain bandwidth need to be divided into 3 parts, these 3 parts canTo be respectively a PRB position that the central user of community is dispatched, the edge customer of community entered(cell level knowledge comprises physics letter for the 2nd PRB position of row scheduling and the cell level knowledge to communityNumber, as PSS, SSS and cell system information etc., this cell system information can be MIB, SIB, seekExhale information and accidental access response information etc.) the 3rd PRB position of dispatching.
Consider that the deployment position of MIB, PSS, SSS is fixed as 6 PRB of the middle of system bandwidth,All the other cell level knowledge should be dispatched the position, middle in system as far as possible, and therefore the 3rd PRB position is systemThe PRB of position, bandwidth middle, and suppose that the PRB quantity that is positioned at the 3rd PRB position takies whole bandsWide ratio is b, considers the scheduling situation of SIB information, b can the scope of value (6-12)/100 in.
In addition, consider that the PRB of cell level knowledge scheduling is positioned at position, system bandwidth middle, for sideJust calculate, the ratio that the PRB quantity of supposing to be positioned at a PRB position takies whole bandwidth is 3*(1-b)/ 4, the ratio that the PRB quantity that is positioned at the 2nd PRB position takies whole bandwidth is (1-b)/4.
In a kind of preferred embodiment of the embodiment of the present invention, determine the edge customer of community is adjustedThe mode of the 2nd PRB position of degree, specifically includes but not limited to following mode:
The PCI(PhysicalCellIdentifier of step 1, every 3 the adjacent communities of configuration, physical areaMark) result of mould 4 is different; As: by OMC(OperationMaintenanceCenter,Operation maintenance center, i.e. centralized network management) result of PCI mould 4 of every adjacent 3 communities of configuration is variant.
Step 2, other PRB position outside the 3rd PRB position is carried out to 4 etc. points in community and processes,And the index that configures 4 decile each PRB after treatment position is respectively 0,1,2,3.
Step 3, determine the result of the PCI mould 4 of community, and determine the edge customer of community is dispatchedThe PRB position of result manipulative indexing of the 2nd PRB position PCI mould 4 that is community.
For example, in the time that the result of the PCI of community mould 4 is 1, the edge customer of Ze Dui community is dispatchedThe 2nd PRB position be the PRB position of index 1; In the time that the result of the PCI of community mould 4 is 2,The 2nd PRB position that the edge customer of community is dispatched is the PRB position of index 2.
As shown in Figure 7, for determine PRB position (a PRB position, the 2nd PRB position andThe 3rd PRB position) application scenarios schematic diagram, as can be seen from Figure 7, for adjacent 3 littleDistrict's (being community A, community B and community C), the 2nd PRB position of each community is mutual forkOpen, based on this mode, can reach the object of the presence of intercell interference that reduces edge customer.
In a kind of preferred embodiment of the embodiment of the present invention, determine the central user of community is adjustedThe mode of the one PRB position of degree, specifically includes but not limited to following mode:
In the time that cell level knowledge need to be dispatched, determine the PRB that the central user of community is dispatchedPosition is other PRB position outside the 2nd PRB position and the 3rd PRB position; When cell-level letterWhen breath does not need to dispatch, determine that the 3rd PRB position is for empty, and determine the central user of community is adjustedThe one PRB position of degree is other PRB position outside the 2nd PRB position, determines communityThe PRB position that central user is dispatched is above-mentioned the 2nd PRB position and the 3rd PRB positionOutside other PRB position and above-mentioned the 3rd definite PRB position.
Wherein, due to MIB, PSS, SSS, SIB, Paging, the cell level knowledge such as msg2 have weekWhether the phase can be followed, therefore can directly determine in current scheduling subframe and have cell level knowledge to need scheduling.
Step 603, the CRS power of determining a PRB position be CRS power corresponding to community (Power A) deduct default the first power and (can be referred to as Cdl), determine the CRS merit of the 2nd PRB positionCRS power (being power A) corresponding to Shuai Wei community adds that default the second power (can be referred to as Eup）。
In addition,, in the time that cell level knowledge need to be dispatched, the CRS power of determining the 3rd PRB position is communityCorresponding CRS power (being power A) adds that default the 3rd power (can be referred to as SYSup）。
In the embodiment of the present invention, the first power is greater than 0, the second power and is greater than 0, the three power and is greater than 0,And above-mentioned the first power, the second power and the 3rd power all can arrange according to practical experience value.
Further, for the ease of the later stage network optimization, the PRB quantity that is positioned at the 3rd PRB position takiesAll the ratio b of bandwidth, the reduction of CRS power are worth lifting values second merit of the first power, CRS powerThe lifting values of rate, CRS power the 3rd power etc., all can manually arrange by network management platform, and according toThe factors such as network load and community area coverage, find out and can improve edge handling capacity, can keep againThe proper parameter of cell system level handling capacity, and carry out relevant treatment based on optimum parameter value.
In sum, for a PRB position, due to the central user of Wei Dui community dispatch positionPut, its channel quality is better, therefore can suitably reduce the CRS power of a PRB position, reducesThe CRS power of the one PRB position is that CRS power corresponding to community (being power A) deducts default theOne power, with power back-off to the two PRB positions and the 3rd PRB position that a PRB position is reducedPut; Wherein, central user is dispatched in this PRB position, and the amplitude of reduction determines central user savingPower.
For the 2nd PRB position, due to the position that the edge customer of Wei Dui community is dispatched, its channelSecond-rate, therefore can suitably improve the CRS power of the 2nd PRB position, improve the 2nd PRBThe CRS power of position is that CRS power corresponding to community (being power A) adds default the second power, withThe Partial Power that the one PRB position is reduced compensates to the 2nd PRB position; Wherein, edge customer schedulingIn this 2nd PRB position, the amplitude of raising determines the expanded reach of edge customer RE, and wave beam formingUser dispatches in this frequency domain.
For the 3rd PRB position, the position of dispatching due to the cell level knowledge of Wei Dui community, thereforeCan suitably improve the CRS power of the 3rd PRB position, improve the CRS power of the 3rd PRB positionFor CRS power corresponding to community (being power A) adds default the 3rd power, with by a PRB positionThe Partial Power reducing compensates to the 3rd PRB position; Wherein, the cell level knowledge of community scheduling thisThree PRB positions (being frequency domain position), and the increase rate of the CRS power of the 3rd PRB position is determiningThe coverage of community.
Compared with in supposing whole bandwidth in prior art, CRS power remains unchanged, in the embodiment of the present invention,The CRS power of the one PRB position, the 2nd PRB position and the 3rd PRB position divides and is arranged, and firstData RE in the PRB position relatively CRS power of this PRB band of position remains unchanged, and secondData RE in the PRB position relatively CRS power of this 2nd PRB band of position remains unchanged, and the 3rdData RE in the PRB position relatively CRS power of this 3rd PRB band of position remains unchanged.
In the embodiment of the present invention, when power, the 2nd PRB position of a PRB position in a scheduling subframeThe maximum transmission power that the power sum of the power of putting and the 3rd PRB position is greater than community (is in subframeThe power summation of each OFDM symbol exceedes community maximum transmission power) time, need to reduce a PRBThe CRS merit of the CRS power of position, the CRS power of the 2nd PRB position and the 3rd PRB positionRate (reducing the power summation of each OFDM symbol in subframe), so that a PRB in this scheduling subframeThe power sum of the power of position, the power of the 2nd PRB position and the 3rd PRB position is not more than communityMaximum transmission power, and notify O&M personnel to revise configuration parameter by information.
In the embodiment of the present invention, according to the RF agreement of LTE system, between adjacent R E, difference power is less than 10db,Therefore as long as qualified RRU can accomplish above power adjustment. In addition, according to link budget, do not examine,Consider other newly to limited, PDCCH channel promotes 3db, and coverage distance can increase 20% left and right; URSPromote 3db, the beam shaping performance of edge customer also can correspondingly promote; For the PDCCH of edge customer,Can, by the method for descending control zone power control, further promote gain in addition.
In sum, in the embodiment of the present invention, by the CRS power of different frequency domain positions is divided and is arranged,Do not affecting under the prerequisite of RRU emitting performance, ensureing the transmitting power of cell level knowledge scheduling, improvingThe coverage of community, improved cell edge beam shaping user URS power, PDCCH andThe power of PDSCH, is conducive to improve beam shaping user's downlink signal quality, and has improved communityThe spectrum efficiency at edge has maintained the handling capacity of whole system simultaneously. In addition, by conjunction with ICIC technology,Reduce power to central user, and the Partial Power of reduction is compensated to edge customer, make beam shapingHigh power do not affect the signal quality of adjacent cell edge customer, the user who has promoted edge customer experiences.
Embodiment bis-
Based on the inventive concept same with said method, in the embodiment of the present invention, also provide a kind of community ginsengExamine signal CRS power locking equipment really, as shown in Figure 8, this equipment comprises:
The first determination module 11, for determining CRS power corresponding to community;
The second determination module 12, for determining the first physics that the central user of described community is dispatchedResource Block PRB position and the 2nd PRB position that the edge customer of described community is dispatched;
The 3rd determination module 13 is described community for the CRS power of determining a described PRB positionCorresponding CRS power deducts default the first power, and determines the CRS power of described the 2nd PRB positionFor CRS power corresponding to described community adds default the second power;
Wherein, described the first power is greater than 0, and described the second power is greater than 0.
Described the second determination module 12, also dispatches the cell level knowledge of described community for determiningThe 3rd PRB position;
Described the 3rd determination module 13 is also institute for the CRS power of determining described the 3rd PRB positionState CRS power corresponding to community and add default the 3rd power; Wherein, described the 3rd power is greater than 0.
Described the second determination module 12, specifically for configuring the physical area of every adjacent described 3 communitiesThe result of mark PCI mould 4 is different;
In described community, 4 grades are carried out in other PRB position outside the 3rd PRB position and divide processing, andThe index that configures 4 decile each PRB after treatment position is respectively 0,1,2,3;
Determine the result of the PCI mould 4 of described community, and determine the edge customer of described community is adjustedThe PRB position of the result manipulative indexing of the PCI mould 4 that the 2nd PRB position of degree is described community.
Described the second determination module 12, specifically in the time that cell level knowledge need to be dispatched, determines describedThe PRB position that the central user of community is dispatched is the 2nd PRB position and the 3rd PRB positionOther PRB position outside putting; In the time that cell level knowledge does not need to dispatch, determine that the 3rd PRB position isSky, and determine that the PRB position that the central user of described community is dispatched is the 2nd PRB positionOutside other PRB position.
Described cell level knowledge comprises one of following or any combination: master sync signal PSS, auxiliary synchronous letterNumber SSS, Master Information Block MIB, system information block SIB, paging information, accidental access response information.
In the embodiment of the present invention, the PRB quantity that is positioned at described the 3rd PRB position takies the ratio of whole bandwidthExample is b, and the ratio that the PRB quantity that is positioned at described the 2nd PRB position takies whole bandwidth is (1-b)/4,The ratio that the PRB quantity that is positioned at a described PRB position takies whole bandwidth is 3*(1-b)/4.
Described the 3rd determination module 13, also for when one scheduling subframe in a PRB position power,The power sum of the power of the 2nd PRB position and the 3rd PRB position is greater than the emission maximum of described communityWhen power, reduce the CRS power of a described PRB position, the CRS merit of described the 2nd PRB positionThe CRS power of rate and described the 3rd PRB position, so that a PRB position in described scheduling subframePower, the power of the 2nd PRB position and the power sum of the 3rd PRB position be not more than described communityMaximum transmission power.
Wherein, the modules of apparatus of the present invention can be integrated in one, and also can separate deployment. Above-mentionedModule can be merged into a module, also can further split into multiple submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to thisThe mode that invention can add essential general hardware platform by software realizes, can certainly be by hardPart, but in a lot of situation, the former is better embodiment. Based on such understanding, skill of the present inventionThe part that art scheme contributes to prior art in essence in other words can be with the form body of software productReveal to come, this computer software product is stored in a storage medium, comprise some instructions with so thatComputer equipment (can be personal computer, server, or the network equipment etc.) is carried outMethod described in each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, in accompanying drawingModule or flow process might not be implement the present invention necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can retouch according to embodimentState in the device that is distributed in embodiment, also can carry out respective change and be positioned at and be different from the present embodimentOne or more devices in. The module of above-described embodiment can be merged into a module, also can enterOne step splits into multiple submodules.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Disclosed is above only several specific embodiment of the present invention, and still, the present invention is not limited toThis, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (10)
1. a cell reference signals CRS power determining method, is characterized in that, comprising:
Determine the CRS power that community is corresponding;
Determine the first Physical Resource Block PRB position and right that the central user of described community is dispatchedThe 2nd PRB position that the edge customer of described community is dispatched;
The CRS power of determining a described PRB position is that CRS power corresponding to described community deducts in advanceIf the first power, and determine that the CRS power of described the 2nd PRB position is CRS corresponding to described communityPower adds default the second power; Wherein, described the first power is greater than 0, and described the second power is greater than 0;
Wherein,
Determine the 3rd PRB position that the cell level knowledge of described community is dispatched;
The CRS power of determining described the 3rd PRB position is that CRS power corresponding to described community adds in advanceIf the 3rd power; Wherein, described the 3rd power is greater than 0;
Described definite the 2nd PRB position that the edge customer of described community is dispatched, specifically comprises:
The result of the Physical Cell Identifier PCI mould 4 of every 3 the adjacent described communities of configuration is different;
In described community, 4 grades are carried out in other PRB position outside the 3rd PRB position and divide processing, andThe index that configures 4 decile each PRB after treatment position is respectively 0,1,2,3;
Determine the result of the PCI mould 4 of described community, and determine the edge customer of described community is adjustedThe PRB position of the result manipulative indexing of the PCI mould 4 that the 2nd PRB position of degree is described community.
2. the method for claim 1, is characterized in that, the described center of determining described communityThe first Physical Resource Block PRB position that user dispatches, specifically comprises:
In the time that cell level knowledge need to be dispatched, determine the central user of described community is dispatched firstPRB position is other PRB position outside the 2nd PRB position and the 3rd PRB position; Work as communityWhen level information does not need to dispatch, determine that the 3rd PRB position is for empty, and determine the center of described community is usedThe PRB position that dispatch at family is other PRB position outside the 2nd PRB position.
3. method as claimed in claim 1 or 2, is characterized in that,
Described cell level knowledge comprises one of following or any combination: master sync signal PSS, auxiliary synchronous letterNumber SSS, Master Information Block MIB, system information block SIB, paging information, accidental access response information.
4. the method as described in claim 1-2 any one, is characterized in that,
The ratio that the PRB quantity that is positioned at described the 3rd PRB position takies whole bandwidth is b, described in being positioned atThe ratio that the PRB quantity of the 2nd PRB position takies whole bandwidth is (1-b)/4, is positioned at described firstThe ratio that the PRB quantity of PRB position takies whole bandwidth is 3* (1-b)/4.
5. the method for claim 1, is characterized in that,
When the power of a PRB position in a scheduling subframe, the power and the 3rd of the 2nd PRB positionWhen the power sum of PRB position is greater than the maximum transmission power of described community, reduce a described PRB positionThe CRS power of putting, the CRS power of described the 2nd PRB position and described the 3rd PRB positionCRS power, so that the power, the merit of the 2nd PRB position of a PRB position in described scheduling subframeThe power sum of rate and the 3rd PRB position is not more than the maximum transmission power of described community.
6. a cell reference signals CRS power locking equipment really, is characterized in that, comprising:
The first determination module, for determining CRS power corresponding to community;
The second determination module, for determining the first physics money that the central user of described community is dispatchedPiece PRB position, source and the 2nd PRB position that the edge customer of described community is dispatched;
The 3rd determination module is described community correspondence for the CRS power of determining a described PRB positionCRS power deduct default the first power, and determine that the CRS power of described the 2nd PRB position is instituteState CRS power corresponding to community and add default the second power;
Wherein, described the first power is greater than 0, and described the second power is greater than 0;
Wherein, described the second determination module, also adjusts the cell level knowledge of described community for determiningThe 3rd PRB position of degree;
Described the 3rd determination module is also described little for the CRS power of determining described the 3rd PRB positionCRS power corresponding to district adds default the 3rd power;
Wherein, described the 3rd power is greater than 0;
Described the second determination module, specifically for configuring the physical area mark of every 3 adjacent described communitiesThe result of knowing PCI mould 4 is different;
In described community, 4 grades are carried out in other PRB position outside the 3rd PRB position and divide processing, andThe index that configures 4 decile each PRB after treatment position is respectively 0,1,2,3;
Determine the result of the PCI mould 4 of described community, and determine the edge customer of described community is adjustedThe PRB position of the result manipulative indexing of the PCI mould 4 that the 2nd PRB position of degree is described community.
7. equipment as claimed in claim 6, is characterized in that,
Described the second determination module, specifically in the time that cell level knowledge need to be dispatched, determines described littleThe PRB position that the central user in district is dispatched is the 2nd PRB position and the 3rd PRB positionOutside other PRB position; In the time that cell level knowledge does not need to dispatch, determine that the 3rd PRB position is for empty,And determine that the PRB position that the central user of described community is dispatched is outside the 2nd PRB positionOther PRB position.
8. the equipment as described in claim 6 or 7, is characterized in that,
Described cell level knowledge comprises one of following or any combination: master sync signal PSS, auxiliary synchronous letterNumber SSS, Master Information Block MIB, system information block SIB, paging information, accidental access response information.
9. the equipment as described in claim 6-7 any one, is characterized in that,
The ratio that the PRB quantity that is positioned at described the 3rd PRB position takies whole bandwidth is b, described in being positioned atThe ratio that the PRB quantity of the 2nd PRB position takies whole bandwidth is (1-b)/4, is positioned at described firstThe ratio that the PRB quantity of PRB position takies whole bandwidth is 3* (1-b)/4.
10. equipment as claimed in claim 6, is characterized in that,
Described the 3rd determination module, also for the power, the when a PRB position in a scheduling subframeThe power sum of the power of two PRB positions and the 3rd PRB position is greater than the emission maximum merit of described communityWhen rate, reduce the CRS power of a described PRB position, the CRS power of described the 2nd PRB positionAnd the CRS power of described the 3rd PRB position, so that the interior PRB position of described scheduling subframeThe power sum of the power of power, the 2nd PRB position and the 3rd PRB position is not more than described communityMaximum transmission power.
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| CN104488333B (en) * | 2014-03-20 | 2019-06-11 | 华为终端有限公司 | Send method, user equipment and the base station of signal |
| CN104394592B (en) * | 2014-11-14 | 2018-02-16 | 大唐移动通信设备有限公司 | Distribution method, device and the base station of PRB resources |
| CN106161311A (en) * | 2015-03-23 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of base station realizes method, device and the base station that cell reference signals is launched |
| CN106411373A (en) * | 2015-07-28 | 2017-02-15 | 中国移动通信集团公司 | Antenna array and method for base station to transmit signal |
| CN106941716A (en) * | 2016-01-04 | 2017-07-11 | 中兴通讯股份有限公司 | A kind of sending method of cell common reference signal, device and base station |
| BR112019012988B1 (en) | 2016-12-23 | 2023-12-26 | Huawei Technologies Co., Ltd | SIGNAL TRANSMISSION METHOD, BASE STATION AND COMPUTER READABLE MEDIUM |
| CN107484192B (en) * | 2017-09-06 | 2021-01-26 | 中兴通讯股份有限公司 | Power processing method and device and storage medium |
| CN110891306B (en) * | 2018-09-07 | 2023-02-28 | 成都鼎桥通信技术有限公司 | Method, base station and storage medium for downlink coverage adaptive adjustment |
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