CN104639224A - Multi-cooperation-cell descending coordinated multi-point (CoMP) transmission method and equipment - Google Patents
Multi-cooperation-cell descending coordinated multi-point (CoMP) transmission method and equipment Download PDFInfo
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Abstract
The invention discloses a multi-cooperation-cell descending coordinated multi-point (CoMP) transmission method, which comprises the following steps: when multiple cooperation cells exist in descending CoMP UE (user equipment) and can adopt different descending CoMP transmission ways, respectively judging whether the combination of the descending CoMP transmission ways of the multiple cooperation cells belong to one descending CoMP transmission way combination in a preset descending CoMP transmission way high/low-priority combination set, and adopting one descending CoMP transmission way combination in the high-priority combination set according to a judgment result or regulating the descending CoMP transmission way combination in the low-priority combination set to carry out descending CoMP transmission. Therefore, the average throughput of the cell is prevented from lowering while the performance of cell-edge users is improved, and the integral performance of descending CoMP is improved.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of down collaboration multi-point technology CoMP transmission method of many cooperation cell.The present invention also relates to a kind of descending CoMP transmission equipment of many cooperation cell simultaneously.
Background technology
In LTE system, owing to adopting OFDM technology, intra-cell interference is generally less.But because inter-cell frequency is multiplexing, presence of intercell interference is comparatively large, becomes the main interference in LTE system, causes cell-edge performance poor.In order to improve the performance of Cell Edge User, meet the requirement of cell edge spectrum efficiency, cooperative multipoint transmission technology (Coordinated Multi-Point, CoMP) is introduced in LTE-A (Long Term Evolution-Advanced) system.CoMP technology, by multiple adjacent base station or node cooperation, simultaneously for a Cell Edge User provides service, to reduce the co-channel interference that Cell Edge User is subject to adjacent cell, improves the service quality of Cell Edge User.Wherein descending CoMP transmission technology is mainly divided into two large classes: (1) joint transmission (Joint Transmission, JT); (2) cooperative scheduling/beam forming (Coordinated Scheduling/Beamforming, CS/CB).
For JT, Serving cell and cooperation cell send identical PDSCH data to same cell edge UE on identical running time-frequency resource simultaneously, due to the superposition of the co-channel interference and downstream signal that eliminate adjacent cell, thus promote the descending performance of cell edge UE; For CS, Serving cell sends downlink data to cell edge UE, and cooperation cell does not send PDSCH data at identical running time-frequency resource, thus eliminates the co-channel interference of adjacent cell, promotes the descending performance of cell edge UE; For CB, Serving cell and cooperation cell send downlink data respectively to different UE on identical running time-frequency resource, but the shaped-beam of Serving cell UE and cooperation cell UE needs to stagger, thus reduces interference each other, thus promotes the descending performance of cell edge UE.
In 3GPP R11, although regulation JP (Joint Processing) and CS/CB can be used in combination in a collaboration set, do not provide the assembled scheme between JP and CS/CB.And in existing descending CoMP implementation, if a descending CoMP UE exists multiple cooperation cell, then each cooperation cell adopts identical descending CoMP transmission pattern (JT, CS or CB).The subject matter that existing implementation exists is: the cell load status of different cooperation cell, radio resource state and channel circumstance etc. may be different, same descending CoMP transmission pattern is not necessarily applicable to each cooperation cell, thus affects descending CoMP overall performance.As a descending CoMP UE exists two cooperation cell, a cooperation cell load is comparatively light, and another cooperation cell load is heavier, if two cooperation cell all adopt JT or CS to transmit, then the community average throughput of that cooperation cell that load is heavier can reduce.
Summary of the invention
The invention provides a kind of descending CoMP transmission method of many cooperation cell, in order to effectively to promote descending CoMP overall performance, the method comprises:
When descending CoMP UE exists multiple cooperation cell and described multiple cooperation cell can adopt different descending CoMP transmission modes respectively, judge that the wherein a kind of descending CoMP transmission mode in the descending CoMP transmission mode high priority the combination of sets whether combination of the descending CoMP transmission mode of described multiple cooperation cell belongs to default combines;
If the determination result is YES, the combination of the descending CoMP transmission mode of described multiple cooperation cell is adopted to carry out descending CoMP transmission;
If judged result is no, judge that the wherein a kind of descending CoMP transmission mode in the descending CoMP transmission mode low priority the combination of sets whether combination of the descending CoMP transmission mode of described multiple cooperation cell belongs to default combines;
If the determination result is YES, the descending CoMP transmission mode of load condition to described multiple cooperation cell according to described multiple cooperation cell is combined into Row sum-equal matrix, and adopts the descending CoMP transmission mode after adjustment to combine and carry out descending CoMP transmission.
Preferably, described default descending CoMP transmission mode high priority combination of sets at least comprises following descending CoMP transmission mode:
N × JT combination, N × CS combination, N1 × JT+N2 × CS combination, 1 × CB+ (N-1) × CS combination;
Wherein, N × JT combination refers to that N number of described cooperation cell all adopts joint transmission JT mode;
N × CS combination refers to that N number of described cooperation cell all adopts CS mode;
N1 × JT+N2 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2=N;
1 × CB+ (N-1) × CS combination refers to that 1 cooperation cell in N number of described cooperation cell adopts CB mode, and all the other cooperation cell in N number of described cooperation cell except described 1 cooperation cell adopt CS mode.
Preferably, described default descending CoMP transmission mode low priority combination of sets at least comprises following descending CoMP transmission mode:
N × CB combination, N1 × JT+N2 × CB combination, N1 × JT+N2 × CB+N3 × CS combination;
Wherein, N × CB combination refers to that N number of described cooperation cell all adopts CB mode;
N1 × JT+N2 × CB combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CB mode, wherein, and N1+N2=N;
N1 × JT+N2 × CB+N3 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, N2 cooperation cell in N number of described cooperation cell adopts CB mode, N3 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2+N3=N.
Preferably, the descending CoMP transmission mode of load condition to described multiple cooperation cell according to described multiple cooperation cell is combined into Row sum-equal matrix, and adopts the descending CoMP transmission mode after adjustment to combine and carry out descending CoMP transmission, specifically comprises:
For described descending CoMP transmission mode be N × CB combination, if there is the load of at least one cooperation cell to be light load or middle load in N number of described cooperation cell, then described descending CoMP transmission mode is adjusted to 1 × CB+ (N-1) × CS, wherein adopt the load of the cooperation cell of CB mode the heaviest, other adopt the load of the cooperation cell of CS mode to be light load or middle load, if the load of N number of described cooperation cell is all heavier, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
Be N1 × JT+N2 × CB combination for described descending CoMP transmission mode, if adopt the load of the individual cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is revised as N1 × JT+N2 × CS combination, if adopt the load of the cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
Be N1 × JT+N2 × CB+N3 × CS combination for described descending CoMP transmission mode, if adopt the load of N3 cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is adjusted to N1 × JT+ (N2+N3) × CS combination, if adopt the load of N3 cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit.
Preferably, also comprise:
If there is the cooperation request of multiple descending CoMP UE in a cooperation cell in described multiple cooperation cell and the PRB resource of described cooperation request is overlapping, then a described cooperation cell accepts the cooperation request of described multiple descending CoMP UE simultaneously, and carries out the transmission of CS mode in the PRB resource of overlap.
Correspondingly, the invention allows for a kind of descending CoMP transmission equipment of many cooperation cell, comprising:
First judge module, for there is multiple cooperation cell as descending CoMP UE and described multiple cooperation cell can adopt different descending CoMP transmission modes respectively time, judge that the wherein a kind of descending CoMP transmission mode in the descending CoMP transmission mode high priority the combination of sets whether combination of the descending CoMP transmission mode of described multiple cooperation cell belongs to default combines;
First transport module, descending CoMP transmission is carried out in the combination for the descending CoMP transmission mode adopting described multiple cooperation cell when the judged result of described first judge module is and is;
Second judge module, the wherein a kind of descending CoMP transmission mode whether belonged in default descending CoMP transmission mode low priority combination of sets for the combination of the descending CoMP transmission mode judging described multiple cooperation cell when the judged result of described first judge module is no combines;
Second transport module, be combined into Row sum-equal matrix according to the descending CoMP transmission mode of load condition to described multiple cooperation cell of described multiple cooperation cell during in the judged result of described second judge module being and being, and adopt the descending CoMP transmission mode after adjustment to combine and carry out descending CoMP transmission.
Preferably, described default descending CoMP transmission mode high priority combination of sets at least comprises following descending CoMP transmission mode:
N × JT combination, N × CS combination, N1 × JT+N2 × CS combination, 1 × CB+ (N-1) × CS combination;
Wherein, N × JT combination refers to that N number of described cooperation cell all adopts joint transmission JT mode;
N × CS combination refers to that N number of described cooperation cell all adopts CS mode;
N1 × JT+N2 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2=N;
1 × CB+ (N-1) × CS combination refers to that 1 cooperation cell in N number of described cooperation cell adopts CB mode, and all the other cooperation cell in N number of described cooperation cell except described 1 cooperation cell adopt CS mode.
Preferably, described default descending CoMP transmission mode low priority combination of sets at least comprises following descending CoMP transmission mode:
N × CB combination, N1 × JT+N2 × CB combination, N1 × JT+N2 × CB+N3 × CS combination;
Wherein, N × CB combination refers to that N number of described cooperation cell all adopts CB mode;
N1 × JT+N2 × CB combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CB mode, wherein, and N1+N2=N;
N1 × JT+N2 × CB+N3 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, N2 cooperation cell in N number of described cooperation cell adopts CB mode, N3 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2+N3=N.
Preferably, described second transport module, specifically for:
For described descending CoMP transmission mode be N × CB combination, if there is the load of at least one cooperation cell to be light load or middle load in N number of described cooperation cell, then described descending CoMP transmission mode is adjusted to 1 × CB+ (N-1) × CS, wherein adopt the load of the cooperation cell of CB mode the heaviest, other adopt the load of the cooperation cell of CS mode to be light load or middle load, if the load of N number of described cooperation cell is all heavier, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
Be N1 × JT+N2 × CB combination for described descending CoMP transmission mode, if adopt the load of the individual cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is revised as N1 × JT+N2 × CS combination, if adopt the load of the cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
Be N1 × JT+N2 × CB+N3 × CS combination for described descending CoMP transmission mode, if adopt the load of N3 cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is adjusted to N1 × JT+ (N2+N3) × CS combination, if adopt the load of N3 cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit.
Preferably, also comprise:
If there is the cooperation request of multiple descending CoMP UE in a cooperation cell in described multiple cooperation cell and the PRB resource of described cooperation request is overlapping, then a described cooperation cell accepts the cooperation request of described multiple descending CoMP UE simultaneously, and carries out the transmission of CS mode in the PRB resource of overlap.
As can be seen here, by applying above technical scheme, when there is multiple cooperation cell in descending CoMP UE and multiple cooperation cell can adopt different descending CoMP transmission modes respectively, the wherein a kind of descending CoMP transmission mode whether belonged in default descending CoMP transmission mode high/low priority groups intersection according to the combination of the descending CoMP transmission mode of multiple cooperation cell respectively combines, and adopt the wherein a kind of descending CoMP transmission mode in high priority combination of sets combine or carry out descending CoMP transmission after being combined into Row sum-equal matrix to the descending CoMP transmission mode in low priority combination of sets according to judged result.Thus while lifting community marginal user performance, community average throughput can not be reduced, improve descending CoMP overall performance.
Accompanying drawing explanation
Fig. 1 is the descending CoMP transmission method flow schematic diagram of a kind of many cooperation cell that the present invention proposes;
Fig. 2 is the structural representation of the descending CoMP transmission equipment of a kind of many cooperation cell that the present invention proposes.
Embodiment
Because the technical problem proposed in background technology, the present invention proposes a kind of propose many cooperation cell scene under each cooperation cell can adopt the technical scheme of different descending CoMP transmission modes (JT, CS or CB), comprise rule of combination between JT, CS, CB and multiple descending CoMP UE simultaneously to the scheme of multiple cooperation cell request cooperation, this technical scheme effectively can promote descending CoMP overall performance.
As shown in Figure 1, be the descending CoMP transmission method flow schematic diagram of a kind of many cooperation cell that the present invention proposes, comprise the following steps:
S101, when descending CoMP UE exists multiple cooperation cell and described multiple cooperation cell can adopt different descending CoMP transmission modes respectively, judge that the wherein a kind of descending CoMP transmission mode in the descending CoMP transmission mode high priority the combination of sets whether combination of the descending CoMP transmission mode of described multiple cooperation cell belongs to default combines.
In the deterministic process of this step, the present invention is after determining each cooperation cell transmission means separately, judge whether to have dropped in high priority combination according to the combination of the transmission means of each cooperation cell, correspondingly, the present invention is directed to high priority combination of sets and be at least provided with following descending CoMP transmission mode:
N × JT combination, N × CS combination, N1 × JT+N2 × CS combination, 1 × CB+ (N-1) × CS combination;
Wherein, N × JT combination refers to that N number of described cooperation cell all adopts joint transmission JT mode;
N × CS combination refers to that N number of described cooperation cell all adopts CS mode;
N1 × JT+N2 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2=N;
1 × CB+ (N-1) × CS combination refers to that 1 cooperation cell in N number of described cooperation cell adopts CB mode, and all the other cooperation cell in N number of described cooperation cell except described 1 cooperation cell adopt CS mode.
S102, if the determination result is YES, adopts the combination of the descending CoMP transmission mode of described multiple cooperation cell to carry out descending CoMP transmission.
S103, if judged result is no, judges that the wherein a kind of descending CoMP transmission mode in the descending CoMP transmission mode low priority the combination of sets whether combination of the descending CoMP transmission mode of described multiple cooperation cell belongs to default combines.
For low priority combination of sets, the descending CoMP transmission mode set by the present invention is as follows:
N × CB combination, N1 × JT+N2 × CB combination, N1 × JT+N2 × CB+N3 × CS combination;
Wherein, N × CB combination refers to that N number of described cooperation cell all adopts CB mode;
N1 × JT+N2 × CB combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CB mode, wherein, and N1+N2=N;
N1 × JT+N2 × CB+N3 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, N2 cooperation cell in N number of described cooperation cell adopts CB mode, N3 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2+N3=N.
S104, if the determination result is YES, the descending CoMP transmission mode of load condition to described multiple cooperation cell according to described multiple cooperation cell is combined into Row sum-equal matrix, and adopts the descending CoMP transmission mode after adjustment to combine and carry out descending CoMP transmission.
For above proposed high priority combination and low priority combination, new mutual interference can not be introduced after adopting the descending CoMP transmission mode in described high priority combination of sets, need after adopting the descending CoMP transmission mode in described low priority combination of sets by contrast between described multiple cooperation cell, to carry out united beam form-endowing process at needs, therefore adopt during the descending CoMP transmission mode in described low priority combination of sets and need to adjust.
Particularly, after adopting the descending CoMP transmission mode in the low priority combination of sets preset, Adjusted Option is as follows:
(1) for described descending CoMP transmission mode be N × CB combination, if there is the load of at least one cooperation cell to be light load or middle load in N number of described cooperation cell, then described descending CoMP transmission mode is adjusted to 1 × CB+ (N-1) × CS, wherein adopt the load of the cooperation cell of CB mode the heaviest, other adopt the load of the cooperation cell of CS mode to be light load or middle load, if the load of N number of described cooperation cell is all heavier, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
(2) be N1 × JT+N2 × CB combination for described descending CoMP transmission mode, if adopt the load of the individual cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is revised as N1 × JT+N2 × CS combination, if adopt the load of the cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
(3) be N1 × JT+N2 × CB+N3 × CS combination for described descending CoMP transmission mode, if adopt the load of N3 cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is adjusted to N1 × JT+ (N2+N3) × CS combination, if adopt the load of N3 cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit.
In addition, also it should be noted that, in the above process, if there is the cooperation request of multiple descending CoMP UE in a cooperation cell in described multiple cooperation cell and the PRB resource of described cooperation request is overlapping, then a described cooperation cell accepts the cooperation request of described multiple descending CoMP UE simultaneously, and carries out the transmission of CS mode in the PRB resource of overlap.
In order to set forth technological thought of the present invention further, now in conjunction with concrete application scenarios, technical scheme of the present invention is described.Below first basic thought of the present invention will be set forth:
If there is multiple cooperation cell (one-to-many scene) in 1 one descending CoMP UE, different cooperation cell can adopt different descending CoMP transmission modes (JT, CS or CB) respectively, and meets JT, CS, CB rule of combination of agreement.
If 2 exist multiple descending CoMP UE simultaneously to multiple cooperation cell request cooperation (multi-to-multi scene), ask and the cooperation cell of cooperation PRB overlap for there being multiple descending CoMP UE to cooperate, then adopt CS.
Based on above-mentioned explanation, concrete technical scheme of the present invention is described in detail as follows:
If 1 one descending CoMP UE exist multiple cooperation cell, different cooperation cell can adopt different descending CoMP transmission modes (JT, CS or CB).Each cooperation cell adopts JT, CS or CB, is jointly determined by existing JT/CS/CB adaptive algorithm and following descending CoMP transmission mode combination of sets.Descending CoMP transmission mode combination of sets comprises high priority combination of sets and low priority combination of sets, and preferential employing high priority combination of sets, when each group item that only cannot meet in high priority combination of sets requires, just adopts low priority combination of sets.The priority of high priority combination of sets higher than low priority combination of sets, between each group item in same combination of sets without priority height point.Descending CoMP transmission mode combination of sets is defined as follows:
High priority combination of sets:
(1) N × JT: represent that N number of cooperation cell all adopts JT, N are the cooperation cell sum of descending CoMP UE, lower same.
(2) N × CS: represent that N number of cooperation cell all adopts CS.
(3) N1 × JT+N2 × CS: represent that N1 cooperation cell adopts JT, N2 cooperation cell to adopt CS, and N1+N2=N.
(4) 1 × CB+ (N-1) × CS: represent that 1 cooperation cell adopts CB, N-1 cooperation cell to adopt CS.
Low priority combination of sets:
(1) N × CB: represent that N number of cooperation cell all adopts CB, but need between cooperation cell and between cooperation cell with Serving cell to do the beam forming processing of combining.
(2) N1 × JT+N2 × CB: represent that N1 cooperation cell adopts JT, N2 cooperation cell to adopt CB, and N1+N2=N.Adopt between the cooperation cell of CB, adopt the cooperation cell of CB and adopt between the cooperation cell of JT and adopt the cooperation cell of CB and all need between Serving cell to do the beam forming processing of combining.
(3) N1 × JT+N2 × CB+N1 × CS: represent that N1 cooperation cell adopts JT, N2 cooperation cell to adopt CB, N1 cooperation cell to adopt CS, and N1+N2+N1=N.Adopt between the cooperation cell of CB, adopt the cooperation cell of CB and adopt between the cooperation cell of JT and adopt the cooperation cell of CB and all need between Serving cell to do the beam forming processing of combining.
The principle distinguishing high priority combination of sets and low priority combination of sets is: after adopting the descending CoMP transmission mode of agreement to combine, new mutual interference whether can be introduced between cooperation cell, if new mutual interference can not be introduced, then be defined as high priority combination of sets, otherwise be low priority combination of sets.For low priority combination of sets, in order to reduce the mutual interference between cooperation cell, need between multiple cooperation cell, do the beam forming processing of combining, process very complicated, implement more difficult, therefore priority is lower.
When after the descending CoMP transmission mode determining each cooperation cell based on existing JT/CS/CB adaptive algorithm, if the descending CoMP transmission mode of each cooperation cell combines belong to low priority combination of sets, then the descending CoMP transmission mode of each cooperation cell is adjusted as far as possible, make the combination after adjusting belong to high priority combination of sets.Adjustable strategies is as follows:
(1) for N × CB compound mode, can be adjusted to 1 × CB+ (N-1) × CS compound mode, wherein adopt the cooperation cell of CB to be the cooperation cell that load is the heaviest, other cooperation cell loads are light load or middle load.If the load of N number of cooperation cell is all heavier, then can not adjust, still adopt low priority combination of sets.
(2) for N1 × JT+N2 × CB compound mode, can be adjusted to N1 × JT+N2 × CS compound mode, wherein adopt the load of the N2 of a CB cooperation cell to be light load or middle load.If adopt the load of N2 the cooperation cell of CB to be heavy load, then can not adjust, still adopt low priority combination of sets.
(3) for N1 × JT+N2 × CB+N1 × CS compound mode, can be adjusted to N1 × JT+ (N2+N1) × CS compound mode, wherein adopt the load of the N2 of a CB cooperation cell to be light load or middle load.If adopt the load of N2 the cooperation cell of CB to be heavy load, then can not adjust, still adopt low priority combination of sets.
If the 2 multiple descending CoMP UE existed from different service cells cooperate to the request of multiple cooperation cell simultaneously, descending CoMP transmission mode is independently determined in each cooperation cell.Its principle is as follows:
(1) if there is the cooperation request of multiple descending CoMP UE in a cooperation cell, and the PRB resource of request is overlapping, then cooperation cell accepts the cooperation request of these descending CoMP UE simultaneously, and CS is in the PRB resource of overlap, UE can be eliminated in cooperation cell like this to the interference of multiple descending CoMP UE simultaneously.
(2) if a descending CoMP UE is simultaneously to multiple cooperation cell request cooperation, then above-mentioned descending CoMP transmission mode rule of combination must be observed.
For reaching above technical purpose, the invention allows for a kind of descending CoMP transmission equipment of many cooperation cell, as shown in Figure 2, comprising:
First judge module 210, for there is multiple cooperation cell as descending CoMP UE and described multiple cooperation cell can adopt different descending CoMP transmission modes respectively time, judge that the wherein a kind of descending CoMP transmission mode in the descending CoMP transmission mode high priority the combination of sets whether combination of the descending CoMP transmission mode of described multiple cooperation cell belongs to default combines;
First transport module 220, descending CoMP transmission is carried out in the combination for the descending CoMP transmission mode adopting described multiple cooperation cell when the judged result of described first judge module is and is;
Second judge module 230, the wherein a kind of descending CoMP transmission mode whether belonged in default descending CoMP transmission mode low priority combination of sets for the combination of the descending CoMP transmission mode judging described multiple cooperation cell when the judged result of described first judge module is no combines;
Second transport module 240, be combined into Row sum-equal matrix according to the descending CoMP transmission mode of load condition to described multiple cooperation cell of described multiple cooperation cell during in the judged result of described second judge module being and being, and adopt the descending CoMP transmission mode after adjustment to combine and carry out descending CoMP transmission.
In concrete application scenarios, described default descending CoMP transmission mode high priority combination of sets at least comprises following descending CoMP transmission mode:
N × JT combination, N × CS combination, N1 × JT+N2 × CS combination, 1 × CB+ (N-1) × CS combination;
Wherein, N × JT combination refers to that N number of described cooperation cell all adopts joint transmission JT mode;
N × CS combination refers to that N number of described cooperation cell all adopts CS mode;
N1 × JT+N2 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2=N;
1 × CB+ (N-1) × CS combination refers to that 1 cooperation cell in N number of described cooperation cell adopts CB mode, and all the other cooperation cell in N number of described cooperation cell except described 1 cooperation cell adopt CS mode.
In concrete application scenarios, described default descending CoMP transmission mode low priority combination of sets at least comprises following descending CoMP transmission mode:
N × CB combination, N1 × JT+N2 × CB combination, N1 × JT+N2 × CB+N3 × CS combination;
Wherein, N × CB combination refers to that N number of described cooperation cell all adopts CB mode;
N1 × JT+N2 × CB combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CB mode, wherein, and N1+N2=N;
N1 × JT+N2 × CB+N3 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, N2 cooperation cell in N number of described cooperation cell adopts CB mode, N3 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2+N3=N.
In concrete application scenarios, described second transport module, specifically for:
For described descending CoMP transmission mode be N × CB combination, if there is the load of at least one cooperation cell to be light load or middle load in N number of described cooperation cell, then described descending CoMP transmission mode is adjusted to 1 × CB+ (N-1) × CS, wherein adopt the load of the cooperation cell of CB mode the heaviest, other adopt the load of the cooperation cell of CS mode to be light load or middle load, if the load of N number of described cooperation cell is all heavier, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
Be N1 × JT+N2 × CB combination for described descending CoMP transmission mode, if adopt the load of the individual cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is revised as N1 × JT+N2 × CS combination, if adopt the load of the cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
Be N1 × JT+N2 × CB+N3 × CS combination for described descending CoMP transmission mode, if adopt the load of N3 cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is adjusted to N1 × JT+ (N2+N3) × CS combination, if adopt the load of N3 cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit.
In concrete application scenarios, also comprise:
If there is the cooperation request of multiple descending CoMP UE in a cooperation cell in described multiple cooperation cell and the PRB resource of described cooperation request is overlapping, then a described cooperation cell accepts the cooperation request of described multiple descending CoMP UE simultaneously, and carries out the transmission of CS mode in the PRB resource of overlap.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention can by hardware implementing, and the mode that also can add necessary general hardware platform by software realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions and perform each method implementing described in scene of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram preferably implementing scene, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device implemented in scene can carry out being distributed in the device of enforcement scene according to implementing scene description, also can carry out respective change and being arranged in the one or more devices being different from this enforcement scene.The module of above-mentioned enforcement scene can merge into a module, also can split into multiple submodule further.
The invention described above sequence number, just to describing, does not represent the quality implementing scene.
Be only several concrete enforcement scene of the present invention above, but the present invention is not limited thereto, 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 down collaboration multi-point technology CoMP transmission method for cooperation cell more than, is characterized in that, comprising:
When descending CoMP user equipment UE exists multiple cooperation cell and described multiple cooperation cell can adopt different descending CoMP transmission modes respectively, judge that the wherein a kind of descending CoMP transmission mode in the descending CoMP transmission mode high priority the combination of sets whether combination of the descending CoMP transmission mode of described multiple cooperation cell belongs to default combines;
If the determination result is YES, the combination of the descending CoMP transmission mode of described multiple cooperation cell is adopted to carry out descending CoMP transmission;
If judged result is no, judge that the wherein a kind of descending CoMP transmission mode in the descending CoMP transmission mode low priority the combination of sets whether combination of the descending CoMP transmission mode of described multiple cooperation cell belongs to default combines;
If be judged as a result, be combined into Row sum-equal matrix according to the descending CoMP transmission mode of load condition to described multiple cooperation cell of described multiple cooperation cell, and the descending CoMP transmission mode after adjustment is adopted to combine and carry out descending CoMP transmission.
2. the method for claim 1, is characterized in that, described default descending CoMP transmission mode high priority combination of sets at least comprises following descending CoMP transmission mode:
N × JT combination, N × CS combination, N1 × JT+N2 × CS combination, 1 × CB+ (N-1) × CS combination;
Wherein, N × JT combination refers to that N number of described cooperation cell all adopts joint transmission JT mode;
N × CS combination refers to that N number of described cooperation cell all adopts cooperative scheduling CS mode;
N1 × JT+N2 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2=N;
1 × CB+ (N-1) × CS combination refers to that 1 cooperation cell in N number of described cooperation cell adopts beam forming CB mode, and all the other cooperation cell in N number of described cooperation cell except described 1 cooperation cell adopt CS mode.
3. the method for claim 1, is characterized in that, described default descending CoMP transmission mode low priority combination of sets at least comprises following descending CoMP transmission mode:
N × CB combination, N1 × JT+N2 × CB combination, N1 × JT+N2 × CB+N3 × CS combination;
Wherein, N × CB combination refers to that N number of described cooperation cell all adopts CB mode;
N1 × JT+N2 × CB combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CB mode, wherein, and N1+N2=N;
N1 × JT+N2 × CB+N3 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, N2 cooperation cell in N number of described cooperation cell adopts CB mode, N3 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2+N3=N.
4. the method for claim 1, it is characterized in that, the descending CoMP transmission mode of load condition to described multiple cooperation cell according to described multiple cooperation cell is combined into Row sum-equal matrix, and adopts the descending CoMP transmission mode after adjustment to combine and carry out descending CoMP transmission, specifically comprises:
For described descending CoMP transmission mode be N × CB combination, if there is the load of at least one cooperation cell to be light load or middle load in N number of described cooperation cell, then described descending CoMP transmission mode is adjusted to 1 × CB+ (N-1) × CS, wherein adopt the load of the cooperation cell of CB mode the heaviest, other adopt the load of the cooperation cell of CS mode to be light load or middle load, if the load of N number of described cooperation cell is all heavier, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
Be N1 × JT+N2 × CB combination for described descending CoMP transmission mode, if adopt the load of N2 cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is revised as N1 × JT+N2 × CS combination, if adopt the load of the cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
Be N1 × JT+N2 × CB+N3 × CS combination for described descending CoMP transmission mode, if adopt the load of N3 cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is adjusted to N1 × JT+ (N2+N3) × CS combination, if adopt the load of N3 cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit.
5. the method for claim 1, is characterized in that, also comprises:
If there is the cooperation request of multiple descending CoMP UE in a cooperation cell in described multiple cooperation cell and the PRB resource of described cooperation request is overlapping, then a described cooperation cell accepts the cooperation request of described multiple descending CoMP UE simultaneously, and carries out the transmission of CS mode in the PRB resource of overlap.
6. a down collaboration multi-point technology CoMP transmission equipment for cooperation cell more than, is characterized in that, comprising:
First judge module, for there is multiple cooperation cell when descending CoMP user equipment UE and described multiple cooperation cell can adopt different descending CoMP transmission modes respectively time, judge that the wherein a kind of descending CoMP transmission mode in the descending CoMP transmission mode high priority the combination of sets whether combination of the descending CoMP transmission mode of described multiple cooperation cell belongs to default combines;
First transport module, descending CoMP transmission is carried out in the combination for the descending CoMP transmission mode adopting described multiple cooperation cell when the judged result of described first judge module is and is;
Second judge module, the wherein a kind of descending CoMP transmission mode whether belonged in default descending CoMP transmission mode low priority combination of sets for the combination of the descending CoMP transmission mode judging described multiple cooperation cell when the judged result of described first judge module is no combines;
Second transport module, be combined into Row sum-equal matrix according to the descending CoMP transmission mode of load condition to described multiple cooperation cell of described multiple cooperation cell during in the judged result of described second judge module being and being, and adopt the descending CoMP transmission mode after adjustment to combine and carry out descending CoMP transmission.
7. equipment as claimed in claim 6, it is characterized in that, described default descending CoMP transmission mode high priority combination of sets at least comprises following descending CoMP transmission mode:
N × JT combination, N × CS combination, N1 × JT+N2 × CS combination, 1 × CB+ (N-1) × CS combination;
Wherein, N × JT combination refers to that N number of described cooperation cell all adopts joint transmission JT mode;
N × CS combination refers to that N number of described cooperation cell all adopts cooperative scheduling CS mode;
N1 × JT+N2 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2=N;
1 × CB+ (N-1) × CS combination refers to that 1 cooperation cell in N number of described cooperation cell adopts beam forming CB mode, and all the other cooperation cell in N number of described cooperation cell except described 1 cooperation cell adopt CS mode.
8. equipment as claimed in claim 6, it is characterized in that, described default descending CoMP transmission mode low priority combination of sets at least comprises following descending CoMP transmission mode:
N × CB combination, N1 × JT+N2 × CB combination, N1 × JT+N2 × CB+N3 × CS combination;
Wherein, N × CB combination refers to that N number of described cooperation cell all adopts CB mode;
N1 × JT+N2 × CB combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, and N2 cooperation cell in N number of described cooperation cell adopts CB mode, wherein, and N1+N2=N;
N1 × JT+N2 × CB+N3 × CS combination refers to that N1 cooperation cell in N number of described cooperation cell adopts JT mode, N2 cooperation cell in N number of described cooperation cell adopts CB mode, N3 cooperation cell in N number of described cooperation cell adopts CS mode, wherein N1+N2+N3=N.
9. method as claimed in claim 8, is characterized in that, described second transport module, specifically for:
For described descending CoMP transmission mode be N × CB combination, if there is the load of at least one cooperation cell to be light load or middle load in N number of described cooperation cell, then described descending CoMP transmission mode is adjusted to 1 × CB+ (N-1) × CS, wherein adopt the load of the cooperation cell of CB mode the heaviest, other adopt the load of the cooperation cell of CS mode to be light load or middle load, if the load of N number of described cooperation cell is all heavier, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
Be N1 × JT+N2 × CB combination for described descending CoMP transmission mode, if adopt the load of the individual cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is revised as N1 × JT+N2 × CS combination, if adopt the load of the cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit;
Be N1 × JT+N2 × CB+N3 × CS combination for described descending CoMP transmission mode, if adopt the load of N3 cooperation cell of CB mode to be light load or middle load, then described descending CoMP transmission mode is adjusted to N1 × JT+ (N2+N3) × CS combination, if adopt the load of N3 cooperation cell of CB mode to be heavy load, then do not adjust, adopt unadjusted descending CoMP transmission mode to combine and transmit.
10. equipment as claimed in claim 6, is characterized in that, also comprise:
If there is the cooperation request of multiple descending CoMP UE in a cooperation cell in described multiple cooperation cell and the PRB resource of described cooperation request is overlapping, then a described cooperation cell accepts the cooperation request of described multiple descending CoMP UE simultaneously, and carries out the transmission of CS mode in the PRB resource of overlap.
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