CN103281792B - A kind of cooperative beam shaping method and device - Google Patents
A kind of cooperative beam shaping method and device Download PDFInfo
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- CN103281792B CN103281792B CN201310173511.9A CN201310173511A CN103281792B CN 103281792 B CN103281792 B CN 103281792B CN 201310173511 A CN201310173511 A CN 201310173511A CN 103281792 B CN103281792 B CN 103281792B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/12—Wireless traffic scheduling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of cooperative beam shaping method and device, the method, comprising: for each community to be optimized bandwidth corresponding to some Resource Block group RBG, obtain the power optimization value that each RBG is corresponding; For each RBG, based on the power optimization value that this RBG is corresponding, cooperative beam figuration CBF is performed to the user equipment (UE) be dispatched at this RBG, only spatial domain interference coordination is carried out to cooperation UE in order to solve in CBF technology, effectively cannot promote the problem of the service quality of cell edge UE.
Description
Technical field
The present invention relates to communication technical field, a kind of cooperative beam shaping method of special design and device.
Background technology
In the follow-up evolution (LongTermEvolutionAdvanced, LTE-A) of Long Term Evolution, because spectrum reuse coefficient is 1, presence of intercell interference is comparatively large, so presence of intercell interference suppression technology becomes one of important technology in LTE-A.Presence of intercell interference suppression technology in LTE-A mainly comprises: presence of intercell interference randomized technique, inter-cell interference cancellation technology, Inter-Cell Interference Coordination/avoidance technology etc.
Wherein, coordinated multipoint transmission (CoordinatedMultipointTransmission/Reception, CoMP) technology is by multiple adjacent base station or node cooperation, simultaneously for a Cell Edge User equipment provides service, to reduce the interference that Cell Edge User equipment is subject to, improve the service quality for Cell Edge User equipment.According to the difference of customer equipment data and channel condition information degree of share, CoMP technology can be further divided into Combined Treatment (Joint-Processing, JP) technology and cooperative scheduling/wave beam forming (CoordinatedScheduling/Beamforming, CS/CBF) the large class of technology two, wherein, CS/CBF technology is mainly divided into cooperative beam to switch (CoordinatingBeamSwitch, CBS) technology and cooperative beam figuration (CoordinatingBeamforming, CBF) technology.Different types of CoMP technology to realize difficulty different with performance gain.
Wherein, CBF technology has more advantage than JP, CBS technology, especially has in time division duplex (TimeDivisionDuplexing, the TDD) system of heterogeneite at up-downgoing channel.
Introduce the basic thought of CBF technology below, community reaches the interference reduced this cell edge UE by the data channel weight of downgoing emission adjusting adjacent area, in CBF technology, UE only carries out data transmission at Serving cell (i.e. the ServingCell of UE), interactive service data is not needed between base station, only need Sounding Reference Signal (soundingreferencesignal certain alternately, SRS) configuration information and schedule information, therefore, the mutual burden of X2 interface between base station can greatly be reduced.
In CBF technology, UE performs the selection that A3 event triggers CBFUE, its objective is that selection is positioned at cell edge, and the UE that Signal to Interference plus Noise Ratio (Signal-to-InterferenceRatio, SINR) is lower, make this UE obtain CBF gain.CBFUE is according to Reference Signal Received Power (ReferenceSignalReceivedPower, RSRP) difference and CQI (ChannelQualityIndicator, CQI) criterion is selected, namely judge to report the CQI of A3 event UE whether to be less than CQI thresholding, if, then judge that this UE is as CBFUE, otherwise, judge that this UE is as common UE.Because UE also to report the RSRP value of some adjacent areas based on A3 event, therefore, base station needs when selecting CBFUE, using and the Serving cell of this CBFUE between the absolute value of RSRP difference reach 1 of predetermined threshold value or 2 adjacent areas as cooperation cell.Some cooperation cell that CBFUE is corresponding form a collaboration set.
Base station, after the collaboration set determining a certain CBFUE, also needs the cooperation UE determining this CBFUE from some cooperation cell of this CBFUE.
Base station generally will meet the UE of following three conditions as cooperation UE in cooperation cell:
(1) data volume of UE meets Resource Block group (ResourceBlockGroup, RBG) size;
(2) determine that the correlation between UE and CBFUE is less than default correlation threshold value;
(3) CQI of UE is greater than CQI thresholding.
In CBF technology, base station to UE operation dispatching, performs priority scheduling for CBFUE according to the type of UE, and cooperation UE and CBFUE in collaboration set is performed combined dispatching, namely, when dispatching CBFUE, cooperation cell is allowed at same RBG for corresponding cooperation UE reserves resource.
Base station performs independent scheduling to the common UE outside cooperation UE and CBFUE, only need the Serving cell pre-allocation resource at this common UE, and the scheduling of common UE is performed after performing combined dispatching to CBFUE and cooperation UE, and all respectively independent scheduling is carried out to the common UE in different districts.
Such as, consult shown in Fig. 1, Cell1 and Cell2 is the cooperation cell in the collaboration set of Cell0.When base station is dispatched to the large packet of CBFUE on RBG2, except needing to distribute except corresponding RBG resource at Cell0, also need to reserve corresponding RBG resource (RBG of the band shade in see Fig. 1 in Cell1 and Cell2) at Cell1 and Cell2, the RBG of these two band shades is the cooperation UE's keeping for above-mentioned CBFUE corresponding, and when RBG6 dispatches the large packet of common UE, the only RBG resource of preassignment Cell0, does not need to reserve corresponding RBG resource at Cell1 and Cell2.
Illustrate that CBF technology carries out the process of spatial domain interference coordination to cell edge UE below in conjunction with Fig. 2.Base station performs virtual scheduling, determines the CBFUE in Cell1 and Cell2 and the UE that cooperates accordingly, and indicates CBFUE and corresponding cooperation UE to reserve identical running time-frequency resource.
Consult shown in Fig. 2, Cell1 by the SRS resource assignment information of this cell edge UE1 and scheduling resource information interaction to cooperation cell Cell2;
Cell2 estimates the channel between Cell2 and UE1 according to the SRS resource assignment information of the UE1 received, and asks for wave beam forming (Beamforming, the BF) weights of UE1;
Cell2 is according to the scheduling resource information of UE1, find out in Cell2 the cooperation UE that the UE2(UE2 occupying identical running time-frequency resource is the UE1 that base station is determined when performing virtual scheduling), in Cell2, Schimidt orthogonalization process is carried out to the BF weights of UE1 and UE2, then to the BF weights renormalization of UE2, the BF weights that UE2 actual transmission uses are obtained.
Because the BF weights of base station to UE2 have carried out Schimidt orthogonalization process and normalized in said process, the BF weights of UE2 will certainly be lowered like this, visible, current CBF technology can only by reduce current area (i.e. Cell1) edge UE(and UE1) cooperation UE(and UE2) actual transmission use BF weights, reduce the interference to edge, current area UE, because said process has only carried out spatial domain interference coordination to cooperation UE, so, multi-plot joint resource cannot obtain efficient allocation, the reduction interference effect that can reach is limited, the service quality of the UE of cell edge cannot effectively be promoted.
Summary of the invention
The embodiment of the present invention provides a kind of cooperative beam shaping method and device, only carries out spatial domain interference coordination to cooperation UE, effectively cannot promote the problem of the service quality of cell edge UE in order to solve in CBF technology.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
First aspect, provides a kind of cooperative beam shaping method, comprising:
For each community to be optimized bandwidth corresponding to some Resource Block group RBG, obtain the power optimization value that each RBG is corresponding;
For each RBG, based on the power optimization value that this RBG is corresponding, cooperative beam figuration CBF is performed to the user equipment (UE) be dispatched at this RBG.
In conjunction with first aspect, in the implementation that the first is possible, obtain the power optimization value that each RBG is corresponding, specifically comprise:
For each RBG, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding.
In conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, specifically comprise:
According to the type of the UE be dispatched on this RBG, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively.
In conjunction with first aspect, in the implementation that the third is possible, obtain the power optimization value that each RBG is corresponding, specifically comprise:
Determine the CBFUE in several communities to be optimized described and cooperation UE;
For the RBG being dispatched to the CBFUE that determines or cooperation UE, using predetermined power lifting value as power optimization value corresponding to this RBG, wherein, described predetermined power lifting value is one in the different capacity lifting value that this RBG is corresponding power lifting value of specifying; Or,
For the RBG of the common UE be dispatched to, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding, wherein, common UE is the UE except the CBFUE determined and cooperation UE.
In conjunction with any one possible implementation above-mentioned of first aspect, in the 4th kind of possible implementation, based on each power lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, specifically comprise:
Determine that this RBG affiliated subdistrict is when using this power lifting value, the efficiency of transmission maximum of UE in this RBG affiliated subdistrict; And
Determine that the cooperation cell of this RBG affiliated subdistrict is when using current transmit power value, the efficiency of transmission maximum of the UE in described cooperation cell;
By the efficiency of transmission maximum sum of the UE in the efficiency of transmission maximum of UE in this RBG affiliated subdistrict and corresponding cooperation cell, as the efficiency of transmission total value that this RBG obtains based on this power lifting value.
In conjunction with the 4th kind of possible implementation of first aspect, in the 5th kind of possible implementation, the current transmit power value that the cooperation cell of this RBG affiliated subdistrict uses refers to: determining in this cooperation cell after the upper once power optimization value of RBG, performing the transmission power level after power optimization according to described last power optimization value.
Second aspect, provides a kind of cooperative beam size enlargement apparatus, comprising:
Acquisition module, for the some Resource Block group RBG corresponding to the bandwidth for each community to be optimized, obtains the power optimization value that each RBG is corresponding;
Executive Module, for for each RBG, based on the power optimization value that this RBG is corresponding, performs cooperative beam figuration CBF to the user equipment (UE) be dispatched at this RBG.
In conjunction with second aspect, in the first possible implementation of second aspect, described acquisition module, specifically for:
For each RBG, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding.
In conjunction with the first possible implementation of second aspect, in the implementation that the second is possible, described acquisition module, specifically for:
According to the type of the UE be dispatched on this RBG, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively.
In conjunction with second aspect, in the implementation that the third is possible, described acquisition module, specifically for:
Determine the CBFUE in several communities to be optimized described and cooperation UE; For the RBG being dispatched to the CBFUE that determines or cooperation UE, using predetermined power lifting value as power optimization value corresponding to this RBG, wherein, described predetermined power lifting value is one in the different capacity lifting value that this RBG is corresponding power lifting value of specifying; Or, for the RBG of the common UE be dispatched to, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding, wherein, common UE is the UE except the CBFUE determined and cooperation UE.
In conjunction with any one possible implementation above-mentioned of second aspect, in the 4th kind of possible implementation, described acquisition module, specifically for:
Determine that this RBG affiliated subdistrict is when using this power lifting value, the efficiency of transmission maximum of UE in this RBG affiliated subdistrict; And determine that the cooperation cell of this RBG affiliated subdistrict is when using current transmit power value, the efficiency of transmission maximum of the UE in described cooperation cell; By the efficiency of transmission maximum sum of the UE in the efficiency of transmission maximum of UE in this RBG affiliated subdistrict and corresponding cooperation cell, as the efficiency of transmission total value that this RBG obtains based on this power lifting value.
In conjunction with the 4th kind of possible implementation of second aspect, in the 5th kind of possible implementation, the current transmit power value that the cooperation cell of this RBG affiliated subdistrict that described acquisition module is determined uses refers to: determining in this cooperation cell after the upper once power optimization value of RBG, performing the transmission power level after power optimization according to described last power optimization value.
The embodiment of the present invention for each community to be optimized bandwidth corresponding to some RBG, the power optimization value that acquisition each RBG is wherein corresponding, and for each RBG, based on the power optimization value that this RBG is corresponding, CBF is performed to the UE be dispatched at this RBG, thus call coordination based on running time-frequency resource, realize time-frequency domain optimization, based on the power optimization value that RBG is corresponding, realize power domain optimization, and, on the basis achieving time-frequency domain and power domain optimization, perform CBF thus realize the interference coordination in spatial domain, multi-plot joint resource is made to obtain efficient allocation, UE in multiple cell can at time-frequency domain, interference each other is all avoided in power domain and aspect, spatial domain three, from the service quality improving edge UE to greatest extent.
Accompanying drawing explanation
Fig. 1 is that CBFUE dispatches schematic diagram;
Fig. 2 is data interaction schematic diagram in CBF technology;
A kind of cooperative beam figuration flow chart that Fig. 3 designs for the embodiment of the present invention;
Fig. 4 for the embodiment of the present invention design a kind of be the schematic diagram of several RBG by bandwidth partition;
The JPSC algorithm flow chart that Fig. 5 designs for the embodiment of the present invention;
A kind of cooperative beam size enlargement apparatus schematic diagram that Fig. 6 designs for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Consult shown in Fig. 3, a kind of cooperative beam shaping method of embodiment of the present invention design, comprises the steps.
Step 301: for each community to be optimized bandwidth corresponding to some Resource Block group RBG, obtain the power optimization value that each RBG is corresponding.
The bandwidth partition of each community to be optimized is become several RBG by base station.List a kind of possible bandwidth partition mode in Fig. 4, consult shown in Fig. 4, the bandwidth of Cell1 and Cell2 has all been divided into n RBG by base station, the size of each RBG is identical, and the RBGi of RBGi and the Cell2 of Cell1 is corresponding, wherein, n is positive integer, and i is the positive integer being not more than n.
Step 302: for each RBG, based on the power optimization value that this RBG is corresponding, performs CBF to the UE be dispatched at this RBG.
The executive agent of above-mentioned steps 301 and 302 can be base station.In practical application, after power optimization value is determined in base station, perform power domain optimization, the transfer of data of the UE under this base station can be allowed to reach optimum state.
Preferably, step 301 can be, but not limited to adopt in following three kinds of modes any one obtain power optimization value corresponding to each RBG:
Mode one: for each RBG, based on the different capacity lifting value that this RBG is corresponding, obtains corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding.
Mode two: for each RBG, according to the type of the UE be dispatched on this RBG, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding.
Mode three: determine the CBFUE in several communities to be optimized above-mentioned and cooperation UE; For the RBG being dispatched to CBFUE or the cooperation UE determined, using predetermined power lifting value as power optimization value corresponding to this RBG, wherein, above-mentioned predetermined power lifting value is one in the different capacity lifting value that this RBG the is corresponding power lifting value of specifying (in practical application, predetermined power lifting value is generally 0dB); Or, for the RBG of the common UE be dispatched to, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding, wherein, common UE is the UE except the CBFUE determined and cooperation UE.
In above-mentioned three kinds of modes, based on each power lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, specifically comprise:
Determine that this RBG affiliated subdistrict is when using this power lifting value, the efficiency of transmission maximum of UE in this RBG affiliated subdistrict; And
Determine that the cooperation cell of this RBG affiliated subdistrict is when using current transmit power value, the efficiency of transmission maximum of the UE in described cooperation cell;
By the efficiency of transmission maximum sum of the UE in the efficiency of transmission maximum of UE in this RBG affiliated subdistrict and corresponding cooperation cell, as the efficiency of transmission total value that this RBG obtains based on this power lifting value.
The current transmit power value that the cooperation cell of this RBG affiliated subdistrict uses refers to: determining in this cooperation cell after the upper once power optimization value of RBG, performing the transmission power level after power optimization according to described last power optimization value.
In practical application, base station can be, but not limited to adopt combined dispatching power to control (JointSchedulerandPowerControl, JSPC) algorithm realization aforesaid way one.In this case, base station is when carrying out power domain optimization based on JSPC algorithm for each community to be optimized, according to the mode of single user beam shaping (SU-BF, SingleUserBeamforming), the power optimization value that each RBG is corresponding can be determined successively.
Consult shown in Fig. 5, in the realization flow of JSPC algorithm, each Transmission Time Interval (TransmissionTimeInterval, TTI) start, base station detects whether reach JSPC optimization cycle, if, then successively the control of combined dispatching power is carried out to each community, its order can according to cell identifier (Identifier, ID) order from small to large, otherwise use current transmit power value to carry out descending scheduling.
Step 501: base station determines that each TTI starts.
Preferably, base station can adopt timer to determine the beginning of each TTI.
Step 502: base station judges whether to arrive the JSPC cycle, if perform step 504, otherwise performs step 503.
Step 503: base station adopts the current transmit power value in down link (DownLink, DL) scheduler (Scheduler).
The corresponding respectively current transmit power value in each community is Initial transmitting power value, or, respective cell upper once carry out power optimization based on power optimization value after transmission power level.
In practical application, can suppose that the Initial Trans of all communities in JPSC algorithm is full power, initial power lifting value is 0dB.
Step 504: base station is determined to need to adopt JSPC algorithm to perform the community optimized, and the Optimal scheduling of community.
Step 505: base station is according to selective sequential community to be optimized of Optimal scheduling.
Step 506: base station, for each RBG in the community selected in step 505, travel through each optional power lifting value successively, and the power lifting value therefrom selecting corresponding efficiency of transmission total value maximum is as the power optimization value of corresponding RBG.
For any one power lifting value of RBG, its efficiency of transmission (Utility) maximum is generally the equitable proportion (ProportionalFair of UE in this RBG affiliated subdistrict, PF) maximum weight value, or the momentary rate R_ins maximum of UE in this RBG affiliated subdistrict.PF weights=R_ins/R_avg, wherein, R_ins is the momentary rate of UE, and R_avg is the Mean Speed of UE.
Such as, when power lifting value is 2dB, community A is the PF maximum weight value of UE in the A of community at the Utility of RBG0, or the R_ins maximum of UE in the A of community.
For any one power lifting value of RBG, its efficiency of transmission total value (namely and Utility) is, the efficiency of transmission maximum sum of the UE in this RBG affiliated subdistrict in the efficiency of transmission maximum of UE and corresponding cooperation cell.
Such as, suppose that the community to be optimized that base station is determined comprises community A, community B, community C, in the current JSPC cycle, the community optimized is community A.
When power lifting value 2dB, community A in the efficiency of transmission total value of RBG0 is:
When power lifting value is 2dB, community A uses current transmit power Zhi Shi community B to use current transmit power Zhi Shi community C at the Utility of RBG0 at the Utility+ of RBG0 at community C at the Utility+ of RBG0 at community B.
In the JSPC optimization cycle of community A, the power lifting value that the maximum transmitted efficiency total value on RBG0 is corresponding, is community A in power optimization value corresponding to RBG0.
Step 507: base station detects whether do not optimize community in addition, if so, returns step 505, otherwise, perform step 508.
Step 508: using the power optimization value of each community stored in the current transmit power value before arriving as the next JSPC cycle in DLScheduler, and return step 503.
The power lifting value that RBG is corresponding also can be called the power grade that this RBG is corresponding, and its reference data is the performance number of cell reference signals (Cell-specificReferenceSignal, CRS).Such as, the power lifting value that RBG is corresponding can be 2dB, 0dB ,-3dB ,-6dB or-9dB, and wherein, 0dB represents average power content (i.e. the size of uncomfortable whole transmitting power), 2dB represents that raising 2dB ,-3dB relative to average power content represents relative to average power content reduction 3dB.
Whole bandwidth is divided into several RBG by above-mentioned JSPC algorithm, processes separately respectively respectively to different RBG.JSPC algorithm is optimized successively for the power of each community, adjusts its power lifting value, wherein, for when wherein power optimization is carried out in certain community, makes the transmission power level after the last optimization of other communities employing, i.e. current transmit power value.
Base station also in conjunction with JSPC algorithm realization aforesaid way two, wherein, when each JSPC cycle arrives, can perform:
Selected current community to be optimized, adopts CBF mode to determine CBFUE in current community to be optimized and is arranged in the cooperation UE of corresponding cooperation cell; According to the UE type that each RBG in above-mentioned current community to be optimized dispatches, based on each power lifting value, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding is as power optimization value corresponding to above-mentioned current community to be optimized.
Preferably, when implementation three, base station can adopt CBF mode to determine CBFUE in each community to be optimized and UE that cooperates accordingly, after base station adopts CBF mode to distinguish dissimilar UE, just complete and the spatial domain of the CBFUE determined and corresponding cooperation UE is regulated, after this, base station can adopt JSPC algorithm to calculate the power lifting value being dispatched to the RBG of common UE.
Based on same mentality of designing, a kind of cooperative beam size enlargement apparatus that the embodiment of the present invention also designs, consult shown in Fig. 6, comprising:
Acquisition module 601, for the some Resource Block group RBG corresponding to the bandwidth for each community to be optimized, obtains the power optimization value that each RBG is corresponding;
Executive Module 602, for for each RBG, based on the power optimization value that this RBG is corresponding, performs cooperative beam figuration CBF to the user equipment (UE) be dispatched at this RBG.
Preferably, above-mentioned acquisition module 601 specifically for:
For each RBG, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding.
In practical application, above-mentioned acquisition module 601, specifically for:
According to the type of the UE be dispatched on this RBG, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively.
Preferably, acquisition module 601, specifically for:
Determine the CBFUE in several communities to be optimized described and cooperation UE;
For the RBG being dispatched to the CBFUE that determines or cooperation UE, using predetermined power lifting value as power optimization value corresponding to this RBG, wherein, described predetermined power lifting value is one in the different capacity lifting value that this RBG is corresponding power lifting value of specifying; Or,
For the RBG of the common UE be dispatched to, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding, wherein, common UE is the UE except the CBFUE determined and cooperation UE.
Further, above-mentioned acquisition module 601, specifically for:
Determine that this RBG affiliated subdistrict is when using this power lifting value, the efficiency of transmission maximum of UE in this RBG affiliated subdistrict; And determine that the cooperation cell of this RBG affiliated subdistrict is when using current transmit power value, the efficiency of transmission maximum of the UE in described cooperation cell; By the efficiency of transmission maximum sum of the UE in the efficiency of transmission maximum of UE in this RBG affiliated subdistrict and corresponding cooperation cell, as the efficiency of transmission total value that this RBG obtains based on this power lifting value.
In practical application, the current transmit power value that the cooperation cell of this RBG affiliated subdistrict uses refers to: determining in this cooperation cell after the upper once power optimization value of RBG, performing the transmission power level after power optimization according to described last power optimization value.
Said apparatus be with method flow one to one, do not repeat them here.
The embodiment of the present invention for each community to be optimized bandwidth corresponding to some RBG, the power optimization value that acquisition each RBG is wherein corresponding, and for each RBG, based on the power optimization value that this RBG is corresponding, CBF is performed to the UE be dispatched at this RBG, thus call coordination based on running time-frequency resource, realize time-frequency domain optimization, based on the power optimization value that RBG is corresponding, realize power domain optimization, and, on the basis achieving time-frequency domain and power domain optimization, perform CBF thus realize the interference coordination in spatial domain, multi-plot joint resource is made to obtain efficient allocation, UE in multiple cell can at time-frequency domain, interference each other is all avoided in power domain and aspect, spatial domain three, from the service quality improving edge UE to greatest extent.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of 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 square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a cooperative beam shaping method, is characterized in that, comprising:
For each community to be optimized bandwidth corresponding to some Resource Block group RBG, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding;
For each RBG, based on the power optimization value that this RBG is corresponding, cooperative beam figuration CBF is performed to the user equipment (UE) be dispatched at this RBG.
2. the method for claim 1, is characterized in that, based on the different capacity lifting value that this RBG is corresponding, obtains corresponding efficiency of transmission total value respectively, specifically comprises:
According to the type of the UE be dispatched on this RBG, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively.
3. the method for claim 1, is characterized in that, obtains the power optimization value that each RBG is corresponding, specifically comprises:
Determine the CBFUE in several communities to be optimized described and cooperation UE;
For the RBG being dispatched to the CBFUE that determines or cooperation UE, using predetermined power lifting value as power optimization value corresponding to this RBG, wherein, described predetermined power lifting value is one in the different capacity lifting value that this RBG is corresponding power lifting value of specifying; Or,
For the RBG of the common UE be dispatched to, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding, wherein, common UE is the UE except the CBFUE determined and cooperation UE.
4. the method according to any one of claim 1-3, is characterized in that, based on each power lifting value that this RBG is corresponding, obtains corresponding efficiency of transmission total value respectively, specifically comprises:
Determine that this RBG affiliated subdistrict is when using this power lifting value, the efficiency of transmission maximum of UE in this RBG affiliated subdistrict; And
Determine that the cooperation cell of this RBG affiliated subdistrict is when using current transmit power value, the efficiency of transmission maximum of the UE in described cooperation cell;
By the efficiency of transmission maximum sum of the UE in the efficiency of transmission maximum of UE in this RBG affiliated subdistrict and corresponding cooperation cell, as the efficiency of transmission total value that this RBG obtains based on this power lifting value.
5. method as described in claim 4, it is characterized in that, the current transmit power value that the cooperation cell of this RBG affiliated subdistrict uses refers to: determining in this cooperation cell after the upper once power optimization value of RBG, performing the transmission power level after power optimization according to described last power optimization value.
6. a cooperative beam size enlargement apparatus, is characterized in that, comprising:
Acquisition module, for the some Resource Block group RBG corresponding to the bandwidth for each community to be optimized, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding;
Executive Module, for for each RBG, based on the power optimization value that this RBG is corresponding, performs cooperative beam figuration CBF to the user equipment (UE) be dispatched at this RBG.
7. device as claimed in claim 6, is characterized in that, described acquisition module, specifically for:
According to the type of the UE be dispatched on this RBG, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively.
8. device as claimed in claim 6, is characterized in that, described acquisition module, specifically for:
Determine the CBFUE in several communities to be optimized described and cooperation UE; For the RBG being dispatched to the CBFUE that determines or cooperation UE, using predetermined power lifting value as power optimization value corresponding to this RBG, wherein, described predetermined power lifting value is one in the different capacity lifting value that this RBG is corresponding power lifting value of specifying; Or, for the RBG of the common UE be dispatched to, based on the different capacity lifting value that this RBG is corresponding, obtain corresponding efficiency of transmission total value respectively, and the power lifting value therefrom selecting maximum efficiency of transmission total value corresponding, as the power optimization value that this RBG is corresponding, wherein, common UE is the UE except the CBFUE determined and cooperation UE.
9. the device according to any one of claim 6-8, is characterized in that, described acquisition module, specifically for:
Determine that this RBG affiliated subdistrict is when using this power lifting value, the efficiency of transmission maximum of UE in this RBG affiliated subdistrict; And determine that the cooperation cell of this RBG affiliated subdistrict is when using current transmit power value, the efficiency of transmission maximum of the UE in described cooperation cell; By the efficiency of transmission maximum sum of the UE in the efficiency of transmission maximum of UE in this RBG affiliated subdistrict and corresponding cooperation cell, as the efficiency of transmission total value that this RBG obtains based on this power lifting value.
10. device as claimed in claim 9, it is characterized in that, the current transmit power value that the cooperation cell of this RBG affiliated subdistrict that described acquisition module is determined uses refers to: determining in this cooperation cell after the upper once power optimization value of RBG, performing the transmission power level after power optimization according to described last power optimization value.
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| CN105337701B (en) * | 2014-08-08 | 2019-01-11 | 上海诺基亚贝尔股份有限公司 | A kind of chain circuit self-adaptive method and device for descending multi-user mimo system |
| CN104993857B (en) * | 2015-05-14 | 2018-12-18 | 大唐移动通信设备有限公司 | A kind of method and device of cooperative beam figuration |
| EP3606262B1 (en) | 2017-04-12 | 2021-07-28 | Huawei Technologies Co., Ltd. | Method, device and system for determining scheduling user |
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| US8867493B2 (en) * | 2009-02-02 | 2014-10-21 | Qualcomm Incorporated | Scheduling algorithms for cooperative beamforming based on resource quality indication |
| EP2439988B1 (en) * | 2010-10-08 | 2014-06-25 | Alcatel Lucent | Optimizing power consumption of a base station |
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| Coordinated Beamforming Algorithms Based on Spatial Covariance Feedback and its Gain over Single-point SU/MU Beamforming;Motorola;《3GPP TSG RAN1#58 R1-093410》;20090828;正文第2-5节 * |
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