CN104639224B - A kind of down collaboration multi-point technology CoMP transmission method and apparatus of more cooperation cells - Google Patents
A kind of down collaboration multi-point technology CoMP transmission method and apparatus of more cooperation cells Download PDFInfo
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Abstract
The invention discloses a kind of descending CoMP transmission method of more cooperation cells.When there are multiple cooperation cells in descending CoMP UE and different descending CoMP transmission modes can be respectively adopted in multiple cooperation cells, the descending CoMP transmission mode of one of which whether belonged in the default high/low priority groups intersection of descending CoMP transmission mode according to the combination of the descending CoMP transmission mode of multiple cooperation cells respectively combines, and uses the descending CoMP transmission mode of one of which in high priority combination of sets to combine or carry out descending CoMP transmission after the descending CoMP transmission mode in low priority combination of sets is combined and is adjusted according to judged result.So as to cause cell average throughput not reduce while community marginal user performance is lifted, descending CoMP overall performances are improved.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of down collaboration multi-point technology of more cooperation cells
CoMP transmission method.The present invention also relates to a kind of descending CoMP transmission equipment of more cooperation cells.
Background technology
In LTE system, due to typically small using OFDM technology, intra-cell interference.But because inter-cell frequency is multiplexed,
Inter-cell interference is larger, turns into the main interference in LTE system, causes cell-edge performance poor.In order to improve cell edge
The performance of user, meet the requirement of cell edge spectrum efficiency, LTE-A (Long Term Evolution-Advanced) system
In introduce cooperative multipoint transmission technology (Coordinated Multi-Point, CoMP).CoMP technologies pass through multiple adjacent
Base station or node cooperation, while service is provided for a Cell Edge User, to reduce Cell Edge User by adjacent cell
Co-channel interference, improve the service quality of Cell Edge User.Wherein descending CoMP transmission technology is broadly divided into two major classes:(1) join
Close transmission (Joint Transmission, JT)；(2) cooperative scheduling/beam forming (Coordinated Scheduling/
Beamforming, CS/CB).
For JT, serving cell and cooperation cell are sent to same cell edge UE simultaneously on identical running time-frequency resource
Identical PDSCH data, due to eliminating the co-channel interference of adjacent cell and the superposition of downstream signal, so as to lift cell edge
UE descending performance；For CS, serving cell sends downlink data to cell edge UE, and cooperation cell is in identical running time-frequency resource
PDSCH data are not sent, so as to eliminate the co-channel interference of adjacent cell, lifting cell edge UE descending performance；For CB, service
Cell and cooperation cell send downlink data, but serving cell UE and cooperation to different UE respectively on identical running time-frequency resource
Cell UE shaped-beam needs to stagger, so as to reduce mutual interference, so as to lift cell edge UE descending performance.
In 3GPP R11, although regulation JP (Joint Processing) and CS/CB can be mixed in a collaboration set
Close and use, but do not provide the assembled scheme between JP and CS/CB.And in existing descending CoMP implementations, if one
Multiple cooperation cells be present in descending CoMP UE, then each cooperation cell using the descending CoMP transmission pattern of identical (JT, CS or
CB).Subject matter existing for existing implementation is：The cell load status of different cooperation cells, radio resource state and
Channel circumstance etc. may be different, and same descending CoMP transmission pattern is not necessarily adapted to each cooperation cell, so as under the influence of
Row CoMP overall performances.There are two cooperation cells in a such as descending CoMP UE, a cooperation cell load is lighter, another
Cooperation cell load is heavier, if two cooperation cells are transmitted using JT or CS, that heavier cooperation cell of load
Cell average throughput can reduce.
The content of the invention
It is overall effectively to lift descending CoMP the invention provides a kind of descending CoMP transmission method of more cooperation cells
Performance, this method include：
When descending CoMP UE multiple cooperation cells be present and the multiple cooperation cell can be respectively adopted it is different descending
During CoMP transmission mode, judge whether the combination of the descending CoMP transmission mode of the multiple cooperation cell belongs to default descending
The descending CoMP transmission mode of one of which in CoMP transmission mode high priority combination of sets combines；
If the determination result is YES, carried out using the combination of the descending CoMP transmission mode of the multiple cooperation cell descending
CoMP transmission；
If judged result is no, judge whether the combination of the descending CoMP transmission mode of the multiple cooperation cell belongs to pre-
If descending CoMP transmission mode low priority combination of sets in the descending CoMP transmission mode of one of which combine；
If the determination result is YES, according to the load condition of the multiple cooperation cell to the descending of the multiple cooperation cell
CoMP transmission mode, which combines, to be adjusted, and is combined using the descending CoMP transmission mode after adjustment and carried out descending CoMP transmission.
Preferably, the default descending CoMP transmission mode high priority combination of sets comprises at least following descending CoMP and passed
Defeated mode：
N × JT combinations, N × CS combinations, N1 × JT+N2 × CS combinations, 1 × CB+ (N-1) × CS combinations；
Wherein, N × JT combinations refer to N number of cooperation cell and use joint transmission JT modes；
N × CS combinations refer to N number of cooperation cell and use CS modes；
The N1 cooperation cell that N1 × JT+N2 × CS combinations refer in N number of cooperation cell uses JT modes, N number of described
N2 cooperation cell in cooperation cell uses CS modes, wherein N1+N2=N；
1 cooperation cell that 1 × CB+ (N-1) × CS combinations refer in N number of cooperation cell uses CB modes, N number of described
Remaining cooperation cell in cooperation cell in addition to 1 cooperation cell uses CS modes.
Preferably, the default descending CoMP transmission mode low priority combination of sets comprises at least following descending CoMP and passed
Defeated mode：
N × CB combinations, N1 × JT+N2 × CB combinations, N1 × JT+N2 × CB+N3 × CS combinations；
Wherein, N × CB combinations refer to N number of cooperation cell and use CB modes；
The N1 cooperation cell that N1 × JT+N2 × CB combinations refer in N number of cooperation cell uses JT modes, N number of described
N2 cooperation cell in cooperation cell uses CB modes, wherein, N1+N2=N；
The N1 cooperation cell that N1 × JT+N2 × CB+N3 × CS combinations refer in N number of cooperation cell uses JT modes, N
N2 cooperation cell in the individual cooperation cell uses CB modes, and N3 cooperation cell in N number of cooperation cell uses
CS modes, wherein N1+N2+N3=N.
Preferably, the descending CoMP transmission according to the load condition of the multiple cooperation cell to the multiple cooperation cell
Mode, which combines, to be adjusted, and is combined using the descending CoMP transmission mode after adjustment and carried out descending CoMP transmission, is specifically included：
Combined for the descending CoMP transmission mode for N × CB, if having at least one association in N number of cooperation cell
The load for making cell is light load or middle load, then the descending CoMP transmission mode is adjusted into 1 × CB+ (N-1) × CS, its
The load of the middle cooperation cell using CB modes is most heavy, other use the load of the cooperation cell of CS modes for light load or in bear
Lotus, if the load of N number of cooperation cell is heavier, without adjustment, using unadjusted descending CoMP transmission mode
Combination is transmitted；
It is N1 × JT+N2 × CB combinations for the descending CoMP transmission mode, if small using the individual cooperation of CB modes
The load in area is light load or middle load, then the descending CoMP transmission mode is revised as into N1 × JT+N2 × CS and combined, such as
Fruit is heavy load using the load of the cooperation cell of CB modes, then without adjustment, using unadjusted descending CoMP transmission
Mode, which combines, to be transmitted；
It is N1 × JT+N2 × CB+N3 × CS combinations for the descending CoMP transmission mode, if the N3 using CB modes
The load of individual cooperation cell is light load or middle load, then the descending CoMP transmission mode is adjusted into N1 × JT+ (N2+
N3) × CS combinations, if being heavy load using the load of N3 cooperation cell of CB modes, without adjustment, using not
The descending CoMP transmission mode of adjustment, which combines, to be transmitted.
Preferably, in addition to：
If multiple descending CoMP UE cooperation request and institute in a cooperation cell in the multiple cooperation cell be present
State cooperation request PRB resources it is overlapping, then one cooperation cell simultaneously receive the multiple descending CoMP UE cooperation please
Ask, and CS mode transmission is carried out in overlapping PRB resources.
Correspondingly, the invention also provides a kind of descending CoMP transmission equipment of more cooperation cells, including：
First judge module, for when multiple cooperation cells and the multiple cooperation cell be present in descending CoMP UE can
When to be respectively adopted in a manner of different descending CoMP transmissions, the group of the descending CoMP transmission mode of the multiple cooperation cell is judged
Close the descending CoMP transmission mode group of one of which whether belonged in default descending CoMP transmission mode high priority combination of sets
Close；
First transport module, for small using the multiple cooperation when the judged result of first judge module is is
The combination of the descending CoMP transmission mode in area carries out descending CoMP transmission；
Second judge module, for judging that the multiple cooperation is small when the judged result of first judge module is no
Whether the combination of the descending CoMP transmission mode in area belongs to its in default descending CoMP transmission mode low priority combination of sets
A kind of middle descending CoMP transmission mode combines；
Second transport module, for small according to the multiple cooperation when the judged result of second judge module is is
The load condition in area is combined to the descending CoMP transmission mode of the multiple cooperation cell and is adjusted, and using adjustment after under
Row CoMP transmission mode, which combines, carries out descending CoMP transmission.
Preferably, the default descending CoMP transmission mode high priority combination of sets comprises at least following descending CoMP and passed
Defeated mode：
N × JT combinations, N × CS combinations, N1 × JT+N2 × CS combinations, 1 × CB+ (N-1) × CS combinations；
Wherein, N × JT combinations refer to N number of cooperation cell and use joint transmission JT modes；
N × CS combinations refer to N number of cooperation cell and use CS modes；
The N1 cooperation cell that N1 × JT+N2 × CS combinations refer in N number of cooperation cell uses JT modes, N number of described
N2 cooperation cell in cooperation cell uses CS modes, wherein N1+N2=N；
1 cooperation cell that 1 × CB+ (N-1) × CS combinations refer in N number of cooperation cell uses CB modes, N number of described
Remaining cooperation cell in cooperation cell in addition to 1 cooperation cell uses CS modes.
Preferably, the default descending CoMP transmission mode low priority combination of sets comprises at least following descending CoMP and passed
Defeated mode：
N × CB combinations, N1 × JT+N2 × CB combinations, N1 × JT+N2 × CB+N3 × CS combinations；
Wherein, N × CB combinations refer to N number of cooperation cell and use CB modes；
The N1 cooperation cell that N1 × JT+N2 × CB combinations refer in N number of cooperation cell uses JT modes, N number of described
N2 cooperation cell in cooperation cell uses CB modes, wherein, N1+N2=N；
The N1 cooperation cell that N1 × JT+N2 × CB+N3 × CS combinations refer in N number of cooperation cell uses JT modes, N
N2 cooperation cell in the individual cooperation cell uses CB modes, and N3 cooperation cell in N number of cooperation cell uses
CS modes, wherein N1+N2+N3=N.
Preferably, second transport module, is specifically used for：
Combined for the descending CoMP transmission mode for N × CB, if having at least one association in N number of cooperation cell
The load for making cell is light load or middle load, then the descending CoMP transmission mode is adjusted into 1 × CB+ (N-1) × CS, its
The load of the middle cooperation cell using CB modes is most heavy, other use the load of the cooperation cell of CS modes for light load or in bear
Lotus, if the load of N number of cooperation cell is heavier, without adjustment, using unadjusted descending CoMP transmission mode
Combination is transmitted；
It is N1 × JT+N2 × CB combinations for the descending CoMP transmission mode, if small using the individual cooperation of CB modes
The load in area is light load or middle load, then the descending CoMP transmission mode is revised as into N1 × JT+N2 × CS and combined, such as
Fruit is heavy load using the load of the cooperation cell of CB modes, then without adjustment, using unadjusted descending CoMP transmission
Mode, which combines, to be transmitted；
It is N1 × JT+N2 × CB+N3 × CS combinations for the descending CoMP transmission mode, if the N3 using CB modes
The load of individual cooperation cell is light load or middle load, then the descending CoMP transmission mode is adjusted into N1 × JT+ (N2+
N3) × CS combinations, if being heavy load using the load of N3 cooperation cell of CB modes, without adjustment, using not
The descending CoMP transmission mode of adjustment, which combines, to be transmitted.
Preferably, in addition to：
If multiple descending CoMP UE cooperation request and institute in a cooperation cell in the multiple cooperation cell be present
State cooperation request PRB resources it is overlapping, then one cooperation cell simultaneously receive the multiple descending CoMP UE cooperation please
Ask, and CS mode transmission is carried out in overlapping PRB resources.
As can be seen here, by applying above technical scheme, when descending CoMP UE have multiple cooperation cells and multiple cooperations
When different descending CoMP transmission modes can be respectively adopted in cell, respectively according to the descending CoMP transmission side of multiple cooperation cells
The descending CoMP of the one of which whether combination of formula belongs in the default high/low priority groups intersection of descending CoMP transmission mode is passed
Defeated mode combines, and according to judged result use high priority combination of sets in the descending CoMP transmission mode of one of which combine or
It is to carry out descending CoMP transmission after the descending CoMP transmission mode in low priority combination of sets is combined and is adjusted.So that
While lifting community marginal user performance cell average throughput will not be reduced, improve descending CoMP overall performances.
Brief description of the drawings
Fig. 1 is a kind of descending CoMP transmission method flow schematic diagram of more cooperation cells proposed by the present invention；
Fig. 2 is a kind of structural representation of the descending CoMP transmission equipment of more cooperation cells proposed by the present invention.
Embodiment
In view of the technical problem proposed in background technology, the present invention proposes one kind and proposes more cooperation cell scenes
Down each cooperation cell can use different descending CoMP transmission modes (JT, CS or CB) technical scheme, including JT, CS,
Rule of combination and multiple descending CoMP UE between CB ask the scheme of cooperation, the technical scheme to multiple cooperation cells simultaneously
Descending CoMP overall performances can effectively be lifted.
As shown in figure 1, be a kind of descending CoMP transmission method flow schematic diagram of more cooperation cells proposed by the present invention, bag
Include following steps：
S101, difference can be respectively adopted when descending CoMP UE have multiple cooperation cells and the multiple cooperation cell
Descending CoMP transmission mode when, judge whether the combination of the descending CoMP transmission mode of the multiple cooperation cell belongs to default
Descending CoMP transmission mode high priority combination of sets in the descending CoMP transmission mode of one of which combine.
In the deterministic process of this step, the present invention be after the respective transmission means in each cooperation cell is determined, according to
The combination of the transmission means of each cooperation cell come judge whether to have dropped into high priority combination in, correspondingly, the present invention is directed to
High priority combination of sets is at least provided with following descending CoMP transmission mode：
N × JT combinations, N × CS combinations, N1 × JT+N2 × CS combinations, 1 × CB+ (N-1) × CS combinations；
Wherein, N × JT combinations refer to N number of cooperation cell and use joint transmission JT modes；
N × CS combinations refer to N number of cooperation cell and use CS modes；
The N1 cooperation cell that N1 × JT+N2 × CS combinations refer in N number of cooperation cell uses JT modes, N number of described
N2 cooperation cell in cooperation cell uses CS modes, wherein N1+N2=N；
1 cooperation cell that 1 × CB+ (N-1) × CS combinations refer in N number of cooperation cell uses CB modes, N number of described
Remaining cooperation cell in cooperation cell in addition to 1 cooperation cell uses CS modes.
S102, if the determination result is YES, carried out using the combination of the descending CoMP transmission mode of the multiple cooperation cell
Descending CoMP transmission.
S103, if judged result is no, judge the multiple cooperation cell descending CoMP transmission mode combination whether
The descending CoMP transmission mode of one of which belonged in default descending CoMP transmission mode low priority combination of sets combines.
For low priority combination of sets, the descending CoMP transmission mode set by the present invention is as follows：
N × CB combinations, N1 × JT+N2 × CB combinations, N1 × JT+N2 × CB+N3 × CS combinations；
Wherein, N × CB combinations refer to N number of cooperation cell and use CB modes；
The N1 cooperation cell that N1 × JT+N2 × CB combinations refer in N number of cooperation cell uses JT modes, N number of described
N2 cooperation cell in cooperation cell uses CB modes, wherein, N1+N2=N；
The N1 cooperation cell that N1 × JT+N2 × CB+N3 × CS combinations refer in N number of cooperation cell uses JT modes, N
N2 cooperation cell in the individual cooperation cell uses CB modes, and N3 cooperation cell in N number of cooperation cell uses
CS modes, wherein N1+N2+N3=N.
S104, if the determination result is YES, according to the load condition of the multiple cooperation cell to the multiple cooperation cell
Descending CoMP transmission mode combine and be adjusted, and combined using the descending CoMP transmission mode after adjustment and carry out descending CoMP
Transmission.
For high priority combination and low priority combination set forth above, due to being combined using the high priority
Concentrate descending CoMP transmission mode after will not introduce it is new interfere, by contrast using the low priority combination of sets
In descending CoMP transmission mode after need need between the multiple cooperation cell carry out united beam form-endowing processing, because
This is used needs to be adjusted during the descending CoMP transmission mode in the low priority combination of sets.
Specifically, after the descending CoMP transmission mode in using default low priority combination of sets, Adjusted Option is such as
Under：
(1) combined for the descending CoMP transmission mode for N × CB, if having at least one in N number of cooperation cell
The load of individual cooperation cell is light load or middle load, then by the descending CoMP transmission mode be adjusted to 1 × CB+ (N-1) ×
CS, wherein most heavy using the load of the cooperation cell of CB modes, other use the load of the cooperation cell of CS modes as light load
Or middle load, if the load of N number of cooperation cell is heavier, without adjustment, passed using unadjusted descending CoMP
Defeated mode, which combines, to be transmitted；
(2) it is that N1 × JT+N2 × CB is combined for the descending CoMP transmission mode, if the individual cooperation using CB modes
The load of cell is light load or middle load, then the descending CoMP transmission mode is revised as into N1 × JT+N2 × CS and combined,
If the load using the cooperation cell of CB modes is heavy load, without adjustment, passed using unadjusted descending CoMP
Defeated mode, which combines, to be transmitted；
(3) it is that N1 × JT+N2 × CB+N3 × CS is combined for the descending CoMP transmission mode, if using CB modes
The load of N3 cooperation cell be light load or middle load, then the descending CoMP transmission mode is adjusted to N1 × JT+
(N2+N3) × CS combinations, if being heavy load using the load of N3 cooperation cell of CB modes, without adjustment, are adopted
Combined and be transmitted with unadjusted descending CoMP transmission mode.
In addition it is also necessary to explanation, in the above process, if in a cooperation cell in the multiple cooperation cell
The cooperation that multiple descending CoMP UE be present is asked and the PRB resources of the cooperation request are overlapping, then one cooperation cell is same
When receive the multiple descending CoMP UE cooperation request, and in overlapping PRB resources carry out CS mode transmission.
In order to which the technological thought of the present invention is expanded on further, in conjunction with specific application scenarios, to the technical side of the present invention
Case illustrates.The basic thought of the present invention will be illustrated first below：
If the 1, a descending CoMP UE has multiple cooperation cells (one-to-many scene), different cooperation cells can be divided
Descending CoMP transmission mode (JT, CS or CB) that Cai Yong be not different, and meet JT, CS, CB rule of combination of agreement.
2nd, cooperation (multi-to-multi scene) is asked to multiple cooperation cells simultaneously if there is multiple descending CoMP UE, for
There are multiple descending CoMP UE cooperations requests and the cooperation cell overlapping PRB that cooperates, then using CS.
Based on described above, concrete technical scheme of the invention is described in detail as follows：
If the 1, a descending CoMP UE has multiple cooperation cells, different cooperation cells can use different descending
CoMP transmission mode (JT, CS or CB).Each cooperation cell uses JT, CS or CB, by existing JT/CS/CB adaptive algorithms
Together decided on following descending CoMP transmission mode combination of sets.Descending CoMP transmission mode combination of sets includes high priority combination of sets
With low priority combination of sets, high priority combination of sets preferentially is used, can not only meet each combination in high priority combination of sets
When item requires, just using low priority combination of sets.The priority of high priority combination of sets is higher than low priority combination of sets, same
Point without priority height between each group item in combination of sets.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 uses the cooperation cell sum that JT, N are descending CoMP UE, similarly hereinafter.
(2)N×CS：Represent that N number of cooperation cell uses CS.
(3)N1×JT+N2×CS：Represent that N1 cooperation cell uses JT, N2 cooperation cell uses CS, and N1+N2=
N。
(4)1×CB+(N-1)×CS：Represent that 1 cooperation cell uses CB, N-1 cooperation cell uses CS.
Low priority combination of sets：
(1)N×CB：Represent that N number of cooperation cell uses CB, but between cooperation cell and cooperation cell and serving cell
Between need to do united beam forming processing.
(2)N1×JT+N2×CB：Represent that N1 cooperation cell uses JT, N2 cooperation cell uses CB, and N1+N2=
N.Being cooperated using between CB cooperation cell, between the cooperation cell using CB and the cooperation cell using JT and using CB
It is required to do united beam forming processing between cell and serving cell.
(3)N1×JT+N2×CB+N1×CS：Represent that N1 cooperation cell uses JT, N2 cooperation cell uses CB, N1
Individual cooperation cell uses CS, and N1+N2+N1=N.Using between CB cooperation cell, using CB cooperation cell and use JT
Cooperation cell between and using CB cooperation cell and serving cell between be required to do united beam forming processing.
Distinguishing the principle of high priority combination of sets and low priority combination of sets is：Using the descending CoMP transmission mode of agreement
Whether can be introduced after combination, between cooperation cell it is new interfere, if will not introduce it is new interfere, be defined as height
Priority groups intersection, it is otherwise low priority combination of sets.For low priority combination of sets, in order to reduce the phase between cooperation cell
Mutually, it is necessary to do united beam forming processing between multiple cooperation cells, processing is extremely complex, implements comparison and is stranded for interference
Difficulty, therefore priority is relatively low.
After the descending CoMP transmission mode of each cooperation cell is determined based on existing JT/CS/CB adaptive algorithms, if respectively
The descending CoMP transmission mode of cooperation cell, which combines, belongs to low priority combination of sets, then as far as possible to the descending CoMP of each cooperation cell
Transmission means is adjusted so that the combination after adjustment belongs to high priority combination of sets.Adjustable strategies are as follows：
(1) for N × CB combinations, 1 × CB+ (N-1) × CS combinations are can be adjusted to, wherein the cooperation using CB
Cell is the most heavy cooperation cell of load, and other cooperation cell loads are light load or middle load.If N number of cooperation cell is negative
Lotus is heavier, then can not adjust, still using low priority combination of sets.
(2) for N1 × JT+N2 × CB combinations, N1 × JT+N2 × CS combinations are can be adjusted to, wherein using CB
The load of N2 cooperation cell be light load or middle load.If the load using CB N2 cooperation cell is heavy burden
Lotus, then it can not adjust, still using low priority combination of sets.
(3) for N1 × JT+N2 × CB+N1 × CS combinations, N1 × JT+ (N2+N1) × CS combination sides be can be adjusted to
Formula, wherein being light load or middle load using the load of CB N2 cooperation cell.If using CB N2 cooperation cell
Load be heavy load, then can not adjust, still using low priority combination of sets.
2nd, ask to assist to multiple cooperation cells simultaneously if there is multiple descending CoMP UE from different service cells
Make, each cooperation cell independently determines descending CoMP transmission mode.Its principle is as follows：
(1) if multiple descending CoMP UE cooperation request in a cooperation cell be present, and the PRB resource weights asked
Folded, then cooperation cell receives these descending CoMP UE cooperation request simultaneously, and is CS in overlapping PRB resources, so may be used
To eliminate interference of the UE to multiple descending CoMP UE in cooperation cell simultaneously.
(2) if descending CoMP UE asks to cooperate to multiple cooperation cells simultaneously, have to comply with above-mentioned descending
CoMP transmission mode rule of combination.
To reach above technical purpose, the invention also provides a kind of descending CoMP transmission equipment of more cooperation cells, such as
Shown in Fig. 2, including：
First judge module 210, for multiple cooperation cells and the multiple cooperation cell be present as descending CoMP UE
When different descending CoMP transmission modes can be respectively adopted, the descending CoMP transmission mode of the multiple cooperation cell is judged
Combine the descending CoMP transmission mode of one of which whether belonged in default descending CoMP transmission mode high priority combination of sets
Combination；
First transport module 220, for using the multiple association when the judged result of first judge module is and is
The combination for making the descending CoMP transmission mode of cell carries out descending CoMP transmission；
Second judge module 230, for judging the multiple association when the judged result of first judge module is no
Whether the combination for making the descending CoMP transmission mode of cell belongs in default descending CoMP transmission mode low priority combination of sets
The descending CoMP transmission mode of one of which combine；
Second transport module 240, for second judge module judged result for be when according to the multiple association
The load condition for making cell is combined to the descending CoMP transmission mode of the multiple cooperation cell and is adjusted, and using adjustment after
Descending CoMP transmission mode combine and carry out descending CoMP transmission.
In specific application scenarios, the default descending CoMP transmission mode high priority combination of sets comprise at least with
Under descending CoMP transmission mode：
N × JT combinations, N × CS combinations, N1 × JT+N2 × CS combinations, 1 × CB+ (N-1) × CS combinations；
Wherein, N × JT combinations refer to N number of cooperation cell and use joint transmission JT modes；
N × CS combinations refer to N number of cooperation cell and use CS modes；
The N1 cooperation cell that N1 × JT+N2 × CS combinations refer in N number of cooperation cell uses JT modes, N number of described
N2 cooperation cell in cooperation cell uses CS modes, wherein N1+N2=N；
1 cooperation cell that 1 × CB+ (N-1) × CS combinations refer in N number of cooperation cell uses CB modes, N number of described
Remaining cooperation cell in cooperation cell in addition to 1 cooperation cell uses CS modes.
In specific application scenarios, the default descending CoMP transmission mode low priority combination of sets comprise at least with
Under descending CoMP transmission mode：
N × CB combinations, N1 × JT+N2 × CB combinations, N1 × JT+N2 × CB+N3 × CS combinations；
Wherein, N × CB combinations refer to N number of cooperation cell and use CB modes；
The N1 cooperation cell that N1 × JT+N2 × CB combinations refer in N number of cooperation cell uses JT modes, N number of described
N2 cooperation cell in cooperation cell uses CB modes, wherein, N1+N2=N；
The N1 cooperation cell that N1 × JT+N2 × CB+N3 × CS combinations refer in N number of cooperation cell uses JT modes, N
N2 cooperation cell in the individual cooperation cell uses CB modes, and N3 cooperation cell in N number of cooperation cell uses
CS modes, wherein N1+N2+N3=N.
In specific application scenarios, second transport module, it is specifically used for：
Combined for the descending CoMP transmission mode for N × CB, if having at least one association in N number of cooperation cell
The load for making cell is light load or middle load, then the descending CoMP transmission mode is adjusted into 1 × CB+ (N-1) × CS, its
The load of the middle cooperation cell using CB modes is most heavy, other use the load of the cooperation cell of CS modes for light load or in bear
Lotus, if the load of N number of cooperation cell is heavier, without adjustment, using unadjusted descending CoMP transmission mode
Combination is transmitted；
It is N1 × JT+N2 × CB combinations for the descending CoMP transmission mode, if small using the individual cooperation of CB modes
The load in area is light load or middle load, then the descending CoMP transmission mode is revised as into N1 × JT+N2 × CS and combined, such as
Fruit is heavy load using the load of the cooperation cell of CB modes, then without adjustment, using unadjusted descending CoMP transmission
Mode, which combines, to be transmitted；
It is N1 × JT+N2 × CB+N3 × CS combinations for the descending CoMP transmission mode, if the N3 using CB modes
The load of individual cooperation cell is light load or middle load, then the descending CoMP transmission mode is adjusted into N1 × JT+ (N2+
N3) × CS combinations, if being heavy load using the load of N3 cooperation cell of CB modes, without adjustment, using not
The descending CoMP transmission mode of adjustment, which combines, to be transmitted.
In specific application scenarios, in addition to：
If multiple descending CoMP UE cooperation request and institute in a cooperation cell in the multiple cooperation cell be present
State cooperation request PRB resources it is overlapping, then one cooperation cell simultaneously receive the multiple descending CoMP UE cooperation please
Ask, and CS mode transmission is carried out in overlapping PRB resources.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can lead to
Hardware realization is crossed, the mode of necessary general hardware platform can also be added by software to realize.Based on such understanding, this hair
Bright technical scheme can be embodied in the form of software product, and the software product can be stored in a non-volatile memories
In medium (can be CD-ROM, USB flash disk, mobile hard disk etc.), including some instructions are causing a computer equipment (can be
Personal computer, server, or network equipment etc.) perform method described in each implement scene of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram for being preferable to carry out scene, module in accompanying drawing or
Flow is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into
Row is distributed in the device of implement scene, can also carry out one or more dresses that respective change is disposed other than this implement scene
In putting.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
The invention described above sequence number is for illustration only, does not represent the quality of implement scene.
Disclosed above is only several specific implementation scenes of the present invention, and still, the present invention is not limited to this, Ren Heben
What the technical staff in field can think change should all fall into protection scope of the present invention.
Claims (6)
1. a kind of down collaboration multi-point technology CoMP transmission method of more cooperation cells, it is characterised in that including：
When descending CoMP user equipment UE multiple cooperation cells be present and the multiple cooperation cell can be respectively adopted it is different
During descending CoMP transmission mode, judge whether the combination of the descending CoMP transmission mode of the multiple cooperation cell belongs to default
The descending CoMP transmission mode of one of which in descending CoMP transmission mode high priority combination of sets combines；
If the determination result is YES, descending CoMP biographies are carried out using the combination of the descending CoMP transmission mode of the multiple cooperation cell
It is defeated；
If judged result is no, judge whether the combination of the descending CoMP transmission mode of the multiple cooperation cell belongs to default
The descending CoMP transmission mode of one of which in descending CoMP transmission mode low priority combination of sets combines；
If it is judged as a result, according to the load condition of the multiple cooperation cell to the descending CoMP of the multiple cooperation cell
Transmission means combination is adjusted, and is combined using the descending CoMP transmission mode after adjustment and carried out descending CoMP transmission；
Wherein, the default descending CoMP transmission mode high priority combination of sets comprises at least following descending CoMP transmission side
Formula：
N × JT combinations, N × CS combinations, N1 × JT+N2 × CS combinations, 1 × CB+ (N-1) × CS combinations；
Wherein, N × JT combinations refer to N number of cooperation cell and use joint transmission JT modes；
N × CS combinations refer to N number of cooperation cell and use cooperative scheduling CS modes；
The N1 cooperation cell that N1 × JT+N2 × CS combinations refer in N number of cooperation cell uses JT modes, N number of cooperation
N2 cooperation cell in cell uses CS modes, wherein N1+N2=N；
1 cooperation cell that 1 × CB+ (N-1) × CS combinations refer in N number of cooperation cell uses beam forming CB modes, N number of
Remaining cooperation cell in the cooperation cell in addition to 1 cooperation cell uses CS modes；
The default descending CoMP transmission mode low priority combination of sets comprises at least following descending CoMP transmission mode：
N × CB combinations, N1 × JT+N2 × CB combinations, N1 × JT+N2 × CB+N3 × CS combinations；
Wherein, N × CB combinations refer to N number of cooperation cell and use CB modes；
The N1 cooperation cell that N1 × JT+N2 × CB combinations refer in N number of cooperation cell uses JT modes, N number of cooperation
N2 cooperation cell in cell uses CB modes, wherein N1+N2=N；
The N1 cooperation cell that N1 × JT+N2 × CB+N3 × CS combinations refer in N number of cooperation cell uses JT modes, N number of institute
State N2 cooperation cell in cooperation cell and use CB modes, N3 cooperation cell in N number of cooperation cell uses CS side
Formula, wherein N1+N2+N3=N；
Wherein N1, N2 and N3 are not 0.
2. the method as described in claim 1, it is characterised in that according to the load condition of the multiple cooperation cell to described more
The descending CoMP transmission mode of individual cooperation cell, which combines, to be adjusted, and using adjustment after descending CoMP transmission mode combine into
The descending CoMP transmission of row, is specifically included：
Combined for the descending CoMP transmission mode for N × CB, if there is at least one cooperation small in N number of cooperation cell
The load in area is light load or middle load, then the descending CoMP transmission mode is adjusted into 1 × CB+ (N-1) × CS, wherein adopting
Load with the cooperation cell of CB modes is most heavy, and other use the load of the cooperation cell of CS modes as light load or middle load,
If the load of N number of cooperation cell is heavier, without adjustment, combined using unadjusted descending CoMP transmission mode
It is transmitted；
It is N1 × JT+N2 × CB combinations for the descending CoMP transmission mode, if the N2 cooperation cell using CB modes
Load be light load or middle load, then the descending CoMP transmission mode is revised as into N1 × JT+N2 × CS combines, if
Load using the cooperation cell of CB modes is heavy load, then without adjustment, using unadjusted descending CoMP transmission side
Formula combination is transmitted；
It is N1 × JT+N2 × CB+N3 × CS combinations for the descending CoMP transmission mode, if the N3 association using CB modes
The load for making cell is light load or middle load, then by the descending CoMP transmission mode be adjusted to N1 × JT+ (N2+N3) ×
CS is combined, unadjusted without adjustment, use if being heavy load using the load of N3 cooperation cell of CB modes
Descending CoMP transmission mode, which combines, to be transmitted.
3. the method as described in claim 1, it is characterised in that also include：
If multiple descending CoMP UE cooperation request and the association in a cooperation cell in the multiple cooperation cell be present
The PRB resources for making to ask are overlapping, then one cooperation cell receives the multiple descending CoMP UE cooperation request simultaneously,
And CS mode transmission is carried out in overlapping PRB resources.
A kind of 4. down collaboration multi-point technology CoMP transmission equipment of more cooperation cells, it is characterised in that including：
First judge module, for multiple cooperation cells and the multiple cooperation cell be present when descending CoMP user equipment UE
When different descending CoMP transmission modes can be respectively adopted, the descending CoMP transmission mode of the multiple cooperation cell is judged
Combine the descending CoMP transmission mode of one of which whether belonged in default descending CoMP transmission mode high priority combination of sets
Combination；
First transport module, for when the judged result of first judge module is to be using the multiple cooperation cell
The combination of descending CoMP transmission mode carries out descending CoMP transmission；
Second judge module, for judging the multiple cooperation cell when the judged result of first judge module is no
The combination of descending CoMP transmission mode whether belong in default descending CoMP transmission mode low priority combination of sets wherein one
The descending CoMP transmission mode of kind combines；
Second transport module, for when the judged result of second judge module is to be according to the multiple cooperation cell
Load condition is combined to the descending CoMP transmission mode of the multiple cooperation cell and is adjusted, and using descending after adjustment
CoMP transmission mode, which combines, carries out descending CoMP transmission；
Wherein, the default descending CoMP transmission mode high priority combination of sets comprises at least following descending CoMP transmission side
Formula：
N × JT combinations, N × CS combinations, N1 × JT+N2 × CS combinations, 1 × CB+ (N-1) × CS combinations；
Wherein, N × JT combinations refer to N number of cooperation cell and use joint transmission JT modes；
N × CS combinations refer to N number of cooperation cell and use cooperative scheduling CS modes；
The N1 cooperation cell that N1 × JT+N2 × CS combinations refer in N number of cooperation cell uses JT modes, N number of cooperation
N2 cooperation cell in cell uses CS modes, wherein N1+N2=N；
1 cooperation cell that 1 × CB+ (N-1) × CS combinations refer in N number of cooperation cell uses beam forming CB modes, N number of
Remaining cooperation cell in the cooperation cell in addition to 1 cooperation cell uses CS modes；
The default descending CoMP transmission mode low priority combination of sets comprises at least following descending CoMP transmission mode：
N × CB combinations, N1 × JT+N2 × CB combinations, N1 × JT+N2 × CB+N3 × CS combinations；
Wherein, N × CB combinations refer to N number of cooperation cell and use CB modes；
The N1 cooperation cell that N1 × JT+N2 × CB combinations refer in N number of cooperation cell uses JT modes, N number of cooperation
N2 cooperation cell in cell uses CB modes, wherein, N1+N2=N；
The N1 cooperation cell that N1 × JT+N2 × CB+N3 × CS combinations refer in N number of cooperation cell uses JT modes, N number of institute
State N2 cooperation cell in cooperation cell and use CB modes, N3 cooperation cell in N number of cooperation cell uses CS side
Formula, wherein N1+N2+N3=N；
Wherein N1, N2 and N3 are not 0.
5. equipment as claimed in claim 4, it is characterised in that second transport module, be specifically used for：
Combined for the descending CoMP transmission mode for N × CB, if there is at least one cooperation small in N number of cooperation cell
The load in area is light load or middle load, then the descending CoMP transmission mode is adjusted into 1 × CB+ (N-1) × CS, wherein adopting
Load with the cooperation cell of CB modes is most heavy, and other use the load of the cooperation cell of CS modes as light load or middle load,
If the load of N number of cooperation cell is heavier, without adjustment, combined using unadjusted descending CoMP transmission mode
It is transmitted；
For the descending CoMP transmission mode it is N1 × JT+N2 × CB combination, if the individual cooperation cell using CB modes
Load is light load or middle load, then the descending CoMP transmission mode is revised as into N1 × JT+N2 × CS and combined, if adopted
Load with the cooperation cell of CB modes is heavy load, then without adjustment, using unadjusted descending CoMP transmission mode
Combination is transmitted；
It is N1 × JT+N2 × CB+N3 × CS combinations for the descending CoMP transmission mode, if the N3 association using CB modes
The load for making cell is light load or middle load, then by the descending CoMP transmission mode be adjusted to N1 × JT+ (N2+N3) ×
CS is combined, unadjusted without adjustment, use if being heavy load using the load of N3 cooperation cell of CB modes
Descending CoMP transmission mode, which combines, to be transmitted.
6. equipment as claimed in claim 4, it is characterised in that also include：
If multiple descending CoMP UE cooperation request and the association in a cooperation cell in the multiple cooperation cell be present
The PRB resources for making to ask are overlapping, then one cooperation cell receives the multiple descending CoMP UE cooperation request simultaneously,
And CS mode transmission is carried out in overlapping PRB resources.
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| CN103024821A (en) * | 2011-09-23 | 2013-04-03 | 中兴通讯股份有限公司 | Multi-user-collaboration multi-point transmission method and device |
| CN103916948A (en) * | 2013-01-08 | 2014-07-09 | 株式会社Ntt都科摩 | Method and device for power control |
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| CN103024821A (en) * | 2011-09-23 | 2013-04-03 | 中兴通讯股份有限公司 | Multi-user-collaboration multi-point transmission method and device |
| CN103916948A (en) * | 2013-01-08 | 2014-07-09 | 株式会社Ntt都科摩 | Method and device for power control |
| CN104080177A (en) * | 2013-03-28 | 2014-10-01 | 株式会社Ntt都科摩 | Coordinated multiple point scheduling method and base station |
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