CN103619022B - Method and device for interference coordination between cells in heterogeneous network - Google Patents
Method and device for interference coordination between cells in heterogeneous network Download PDFInfo
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- CN103619022B CN103619022B CN201310659286.XA CN201310659286A CN103619022B CN 103619022 B CN103619022 B CN 103619022B CN 201310659286 A CN201310659286 A CN 201310659286A CN 103619022 B CN103619022 B CN 103619022B
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Abstract
The embodiment of the invention provides a method and a device for interference coordination between cells in a heterogeneous network, relates to the field of communication, and can effectively guarantee the QoS requirement of UE in a QoS requirement system of the UE. The method comprises the steps that a first base station sends a paging message to the first UE, and after the first UE receives the paging message, the UE feeds back an interference parameter when detecting the interference parameter of a second base station exceeds a threshold value; the first base station calculates to obtain an ABS pattern according to the interference parameter and the QoS requirement of the first UE; the ABS pattern is sent to the second base station, after the second base station judges that the ABS pattern can be configured according to the QoS requirement of the UE served by the second base station, the second base station feeds back an indication message indicating that the second base station can configure the ABS pattern to the first base station, and therefore the first base station transmits data to the first UE on a subframe, reserved to be blank, of the second base station.
Description
Technical field
The present invention relates to communication network, more particularly, to a kind of method and apparatus of heterogeneous network medium and small interval interference coordination.
Background technology
Prosperity with intelligent terminal and user data rate demand growing, traditional mobile communications network is no matter
It is from coverage or all no longer to have met requirement from the angle of speed.Therefore 3gpp(3rd generation
Partnership project, third generation partner program) it is based on lte(long term evolution, Long Term Evolution)
Propose to introduce isomery network technology to solve this problem.Described isomery network technology refers to that deployment is such as micro- in macro base station coverage area
The such lpn of micro-base station, femto base station, via node (low power node, low power nodes).The deployment of these lpn
Can spread over well, improve network transmission speed.
Based on above-mentioned isomery network technology, the coverage of lpn is completely in the coverage of macro base station, therefore is in
The lpn ue(use equipment of lpn cell edge, user equipment) by the strong jamming of macrocell, and macrocell can be in
The strong jamming of the lpn cell that the macrocell ue at edge can be adjacent, thus how effective coordination macrocell and lpn cell it
Between interference become the problem of the main consideration of current isomery network technology.
In prior art, the method for the interference between coordination macrocell and lpn cell is broadly divided into time domain and frequency domain two is big
Class.
The method of time domain is using abs (almost blank subframe, almost blank subframe) technology, i.e. lpn cell
Sub-frame configuration on some positions can be become almost blank subframe, in these approximate blank subframe, lpn cell will not send
Data.So, macrocell in the subframe on described correspondence position for be in macrocell edge ue provide service when, macrocell
The interference that subframe on correspondence position is subject to will be very little.
The method of frequency domain is using frequency band splitting scheme, by being divided the frequency resource in network so that network
In the macrocell that interferes and lpn cell completely using different frequency bands or only divide different frequency bands in cell edge, keep away
Exempt from presence of intercell interference.Example, macrocell central user adopts frequency band f1 and f3, and edge customer adopts frequency band f2, in lpn cell
Heart user adopts frequency band f1 and f2, and edge customer adopts frequency band f3, the frequency resource that two cells take simultaneously in edge customer
Upper used transmit power is higher than other frequency resources, thus that effectively reduces that two class Cell Edge User are subject to disturbs.
From the foregoing, it will be observed that in prior art, for the interference between effective coordination macrocell and lpn cell, macrocell and lpn
Cell needs not launch data in some time domains, or can not use some frequency bands, in other words, has in macrocell or lpn cell
Part resource is disabled, and in the case that so ue is more in systems, the division of frequency band or the setting of abs will lead to grand little
The ue that area and lpn cell can load reduces in a large number, may result in the qos(quality of service of ue, Service Quality
Amount) demand cannot be met.
Content of the invention
Embodiments of the invention provide a kind of method and apparatus of heterogeneous network medium and small interval interference coordination, are effectively ensured and are
The qos demand of the ue of system.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
A kind of method of heterogeneous network medium and small interval interference coordination, comprising:
First base station sends beep-page message to first user equipment ue, so that a described ue is receiving described paging
After message, the interference parameter of detection the second base station, and when the interference parameter described second base station is detected exceedes threshold value, to institute
State first base station and feed back described interference parameter；
Described first base station receives the interference parameter of a described ue feedback；And according to described interference parameter and described
The service quality qos demand of one ue, carries out almost blank subframe abs needs estimate, obtains abs pattern；
Described first base station sends described abs pattern to the second base station, so that described second base station is according to its service
Ue qos demand estimation go out to configure described abs pattern after, to described first base station feed back instruction message；
Described first base station receives described instruction message；
If described instruction message indicate described second base station can configure described abs pattern, described first base station according to
Described abs pattern is left in the subframe of blank to a described ue transmission data in described second base station；
Wherein, described first base station is macro base station, and described second base station is low power base station lpn；Or, described second base
Stand as macro base station, described first base station is lpn.
A kind of method of heterogeneous network medium and small interval interference coordination, comprising:
Second base station receives the almost blank subframe abs pattern that first base station sends；
Can described second base station judge, when meeting the qos demand of ue of its service, configure described abs pattern；
If described abs pattern can be configured, described second base station configures described abs pattern, and anti-to described first base station
Feedback instruction message, described instruction message indicates that described second base station can configure described abs pattern, so that described first base station
It is left in the subframe of blank to a ue transmission data in described second base station；
Wherein, described first base station is macro base station, and described second base station is low power base station lpn；Or, described second base
Stand as macro base station, described first base station is lpn.
A kind of first base station, comprising:
Transmitting element, for sending beep-page message to first user equipment ue, so that a described ue is receiving
After stating beep-page message, the interference parameter of detection the second base station, and exceed threshold value in the interference parameter described second base station is detected
When, feed back described interference parameter to described first base station；
Receiving unit, for receiving the interference parameter of a described ue feedback；
Processing unit, for the service quality of the described interference parameter that received according to receiving unit and a described ue
Qos demand, carries out almost blank subframe abs needs estimate, obtains abs pattern；
Described transmitting element, is additionally operable to send, to the second base station, the described abs pattern that described processing unit obtains, so that
Described second base station after can the qos demand estimation of the ue being serviced according to it go out configure described abs pattern, to described first base
Feedback of standing instruction message；
Described receiving unit, is additionally operable to receive described instruction message；
Described processing unit, the described instruction message being additionally operable to receive in described receiving unit indicates described second base station
When can configure described abs pattern, it is left in the subframe of blank to described first in described second base station according to described abs pattern
Ue transmission data.
A kind of second base station, comprising:
Receiving unit, for receiving the almost blank subframe abs pattern of first base station transmission；
Can processing unit, for judging, when meeting the qos demand of ue of its service, configure described abs pattern；
Described processing unit, for when judging to configure described abs pattern, configures described abs pattern, and to described
First base station feedback instruction message, described instruction message indicates that described second base station can configure described abs pattern, so that institute
State first base station to be left in the subframe of blank to a ue transmission data in described second base station.
The method of heterogeneous network medium and small interval interference coordination provided in an embodiment of the present invention, by first base station according to described
The qos demand to a described ue interference parameter and a described ue for second base station, calculates and obtains abs pattern, and described
When the qos demand estimation of the ue that the second base station services according to it goes out to configure described abs pattern, according to described abs pattern,
Described second base station is left in the subframe of blank to a ue transmission data.The method that the present invention provides only is meeting described first
In the case of the qos demand of ue of the qos demand of ue and described second base station service, it is transmitted using abs pattern, permissible
The qos demand of ue is effectively ensured.
Brief description
A kind of method flow schematic diagram of heterogeneous network medium and small interval interference coordination that Fig. 1 provides for the embodiment of the present invention 1；
The method flow of another kind of heterogeneous network medium and small interval interference coordination that Fig. 2 provides for the embodiment of the present invention 1 is illustrated
Figure；
A kind of method flow schematic diagram of heterogeneous network medium and small interval interference coordination that Fig. 3 provides for the embodiment of the present invention 2；
A kind of heterogeneous network system configuration diagram that Fig. 4 provides for the embodiment of the present invention 2；
A kind of abs pattern schematic diagram that Fig. 5 provides for the embodiment of the present invention 2；
A kind of first base station structured flowchart that Fig. 6 provides for the embodiment of the present invention 3；
One kind the second architecture of base station block diagram that Fig. 7 provides for the embodiment of the present invention 3.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
It is related to two kinds of base station-first base stations and the second base station, both bases in technical scheme provided in an embodiment of the present invention
There are following two situations in station, a kind of situation is: described first base station is macro base station, and described second base station is lpn；Another kind of feelings
Condition is: described second base station is macro base station, and described first base station is lpn.
Embodiments provide a kind of method of heterogeneous network medium and small interval interference coordination, its executive agent is first
Base station, as shown in figure 1, methods described includes:
101st, first base station sends beep-page message to a ue, so that a described ue is receiving described beep-page message
Afterwards, detect the interference parameter of the second base station, and when the interference parameter described second base station is detected exceedes threshold value, to described the
Interference parameter described in one base station feedback.
A described ue is the ue of described first base station service, and described first base station is needing to a ue transmission data
When, beep-page message can be sent to a described ue, after a described ue receives described beep-page message, will be to described first base
Stand and send page-response message, a described ue can measure the interference parameter of the second base station, and the second base is being detected simultaneously
When the interference parameter stood exceedes threshold value, feed back described interference parameter to described first base station.
102nd, described first base station receives the interference parameter of a described ue feedback；And according to described interference parameter and institute
State the service quality qos demand of a ue, carry out almost blank subframe abs needs estimate, obtain abs pattern.
Described first base station can be according to the qos demand of the interference parameter receiving and a described ue be calculated as
Running time-frequency resource required for first ue transmission data, thus carrying out abs needs estimate, obtains abs pattern.Wherein, described abs figure
Indicating in case which sub-frame configuration described second base station needs is blank subframe, and these blank subframe of described first base station
During to a described ue transmission data, the qos demand of a described ue can be met.
103rd, described first base station sends described abs pattern to the second base station, so that described second base station is according to it
After can the qos demand estimation of the ue of service go out configure described abs pattern, feed back instruction message to described first base station.
Described abs pattern, after step 102 obtains described abs pattern, can be sent to described second by described first base station
Base station, described second base station can be judged after receiving described abs pattern, if described second base station is according to described abs pattern
Still the qos demand of the ue of described second base station own services can be met after being configured with blank subframe, then judge described
Two base stations can configure described abs pattern, if described second base station is configured with after blank subframe and can not expire according to described abs pattern
The qos demand of the ue of the described second base station own services of foot, then judge that described second base station can not configure described abs pattern.
Instruction message, after judging configure described abs pattern, can be fed back to described first base station in described second base station can.
104th, described first base station receives described instruction message.
If 105 described instruction message indicate that described second base station can configure described abs pattern, described first base station
It is left in the subframe of blank to a described ue transmission data in described second base station according to described abs pattern.
If described second base station judges that described second base station configures described abs pattern, described instruction message instruction institute
State the second base station and configure described abs pattern, described first base station is left blank according to described abs pattern in described second base station
To a described ue transmission data in subframe.
Example it is assumed that described in step 102 first base station obtain abs pattern in indicate described second base station need by
4th sub-frame configuration is blank subframe, and in step 105, described instruction message indicates the described abs figure of described second base station configuration
Case, then described first base station just can be to a described ue transmission data in the 4th subframe.Because described second base station will be described
4th sub-frame configuration is blank subframe, therefore in described 4th subframe, described second base station will not send data, and now described first
Base station in the 4th subframe to a described ue transmission data, so when described in a ue would not be subject to described second base station
Interference.
The embodiment of the present invention additionally provides a kind of method of heterogeneous network medium and small interval interference coordination, and its executive agent is the
Two base stations, as shown in Fig. 2 methods described includes:
201st, the second base station receives the almost blank subframe abs pattern that first base station sends.
Described first base station, when needing to a ue transmission data, can send beep-page message to a described ue, described
After first ue receives described beep-page message, page-response message, a described ue simultaneously will be sent to described first base station
The interference parameter of the second base station can be measured, and when the interference parameter the second base station is detected exceedes threshold value, to described first
Interference parameter described in base station feedback.Described first base station can be according to the qos of the interference parameter receiving and a described ue
Demand is calculated as the running time-frequency resource required for a described ue transmission data, thus carrying out abs needs estimate, obtains abs pattern,
Then, described abs pattern will be sent to described second base station by described first base station.Wherein, indicate institute in described abs pattern
Which sub-frame configuration states the second base station needs to be blank subframe, and these blank subframe of described first base station are to described first
When ue sends data, the qos demand of a described ue can be met.
202nd, can described second base station judge, when meeting the qos demand of ue of its service, configure described abs pattern.
Described second base station can be judged after receiving described abs pattern, if described second base station is schemed according to described abs
Case still can meet the qos demand of the ue of described second base station own services after being configured with blank subframe, then judge described
Second base station can configure described abs pattern, if be configured with after blank subframe according to described abs pattern can not for described second base station
Meet the qos demand of the ue of described second base station own services, then judge that described second base station can not configure described abs figure
Case.
If the 203 described abs patterns of configuration, described second base station configures described abs pattern, and to described first base station
Feedback instruction message, described instruction message indicates that described second base station can configure described abs pattern, so that described first base
Stand in described second base station to be left in the subframe of blank to a ue transmission data.
When described second base station judges that described second base station can configure described abs pattern, show described second base station
Even if being configured with described abs pattern, the qos demand of the ue of described second base station own services still can be met, now, described
Second base station just can configure described abs pattern, and so described first base station just can be according to described abs pattern described second
Base station is left in the subframe of blank to a described ue transmission data, and in blank subframe, described second base station will not be sent out
Send data, therefore a described ue would not be disturbed by described second base station.
The method of heterogeneous network medium and small interval interference coordination provided in an embodiment of the present invention, by first base station according to described
The qos demand to a described ue interference parameter and a described ue for second base station, calculates and obtains abs pattern, and described
When the qos demand estimation of the ue that the second base station services according to it goes out to configure described abs pattern, according to described abs pattern,
Described second base station is left in the subframe of blank to a ue transmission data.The method that the present invention provides only is meeting described first
In the case of the qos demand of ue of the qos demand of ue and described second base station service, it is transmitted using abs pattern, permissible
The qos demand of ue is effectively ensured.
Embodiment 2
Embodiments provide a kind of method of heterogeneous network medium and small interval interference coordination, the method is applied to comprise
Have in first base station and the system of the second base station, the step of described first base station execution includes the step described in Fig. 1 in embodiment 1
Suddenly, the step of described second base station execution includes the step described in Fig. 2 in embodiment 1, as shown in figure 3, methods described includes:
301st, first base station sends beep-page message to a ue.
A described ue is the ue of described first base station service, and described first base station is needing to a described ue transmission number
According to when, can to described first ue send beep-page message.
302nd, a described ue, after receiving described beep-page message, detects the interference parameter of the second base station, and in detection
To the interference parameter of described second base station exceed threshold value when, feed back described interference parameter to described first base station.
Described first base station, when needing to a described ue transmission data, can send beep-page message to a described ue,
After a described ue receives described beep-page message, page-response message will be sent to described first base station, simultaneously described the
One ue can measure the interference parameter of the second base station, and when the interference parameter the second base station is detected exceedes threshold value, to described
First base station feeds back described interference parameter.
Certainly, if the interference parameter of the second base station is detected not less than threshold value, a described ue would not be to described
One base station sends the interference parameter of described second base station.It is dry that this indicates that described second base station will not produce to a described ue
Disturb, therefore when described first base station does not receive the interference parameter of described second base station, described first base station will normally to
A described ue transmission data.
Example, described interference parameter can be signal intensity, and a described ue can measure the letter of described second base station
Number intensity, if the signal intensity described second base station is detected exceedes threshold value, illustrates that described second base station can be to described first
Ue produces strong jamming, and now this signal intensity just can be fed back to described first base station by a described ue.
303rd, described first base station receives the interference parameter of a described ue feedback；And according to described interference parameter and institute
State the service quality qos demand of a ue, carry out almost blank subframe abs needs estimate, obtain abs pattern.
Described first base station can be according to the qos demand of the interference parameter receiving and a described ue be calculated as
Running time-frequency resource required for first ue transmission data, thus carrying out abs needs estimate, obtains abs pattern.Wherein, described abs figure
Indicating in case which sub-frame configuration described second base station needs is blank subframe, and these blank subframe of described first base station
During to a described ue transmission data, the qos demand of a described ue can be met.
304th, described first base station sends described abs pattern to the second base station.
305th, can described second base station judge, when meeting the qos demand of ue of its service, configure described abs pattern.
Described second base station can be judged after receiving described abs pattern, if described second base station is schemed according to described abs
Case still can meet the qos demand of the ue of described second base station own services after being configured with blank subframe, then judge described
Second base station can configure described abs pattern, if be configured with after blank subframe according to described abs pattern can not for described second base station
Meet the qos demand of the ue of described second base station own services, then judge that described second base station can not configure described abs figure
Case.
If can configure, carry out step 306-307, if can not configure, carry out step 308-311.
306th, described second base station configures described abs pattern, and feeds back instruction message, described instruction to described first base station
Message indicates that described second base station can configure described abs pattern.
Example, a mark abs_ind can be carried in described instruction message, if described abs_ind=1, show institute
State instruction message and indicate that described second base station can configure described abs pattern, if described abs_ind=0, show described instruction
Message indicates that described second base station can not configure described abs pattern.
307th, described first base station is left in the subframe of blank to a ue in described second base station according to described abs pattern
Transmission data.
In blank subframe, described second base station does not send data, and described first base station is to a described ue transmission
Data, therefore a described ue would not be disturbed by described second base station.
So, only in the feelings of the qos demand meeting a described ue and the qos demand of the ue of described second base station service
Under condition, it is transmitted using abs pattern, the qos demand of ue can be effectively ensured.
308th, instruction message is fed back to described first base station in described second base station, and described instruction message indicates described second base
Stand and do not configure described abs pattern.
309th, described first base station sends measurement instruction message to a described ue, so that a described ue measurement is simultaneously anti-
Present between the first channel information between a described ue and described first base station, and a described ue and described second base station
Two channel informations.
310th, described first base station receives described first channel information and the second channel information of a described ue feedback.
311st, described first base station is according to described first channel information and described second channel information, for lpn cell
Type, by with the cooperating of described second base station, to a described ue transmission data, wherein, the cell that described lpn covers is
Lpn cell.
Here it should be noted that due to the motility of lpn deployment, can be operated under following Three models:
A, open: in network, all ue(include macrocell ue and lpn cell ue) all can access lpn cell, and respectively
Priority is not had to distinguish between ue.Example, described lpn cell can be the Hot Spot of operator oneself deployment.
B, hybrid: in network, all ue all can access lpn cell, but the ue being contracted with lpn cell is had
The right of priority access lpn cell.
C, closed: i.e. closed user group formula, the ue only being contracted with lpn cell could access lpn cell, and its
His ue all can not access, example, and described lpn cell can be that in company or family, oneself is disposed and does not allow other people to connect
The cell entering.
Described first base station, after receiving described first channel information and described second channel information, can pass through lpn
The mode of operation of cell carries out cooperation transmission mode selection, and even lpn cell is closed, then adopt cs/cb
(coordinated scheduling/beamforming, cooperative scheduling/wave beam forming) mode is to a described ue transmission number
According to if lpn cell is open or hybrid, adopting jt(joint transmission, combine transmission) mode is to described
First ue transmission data.
Wherein it is desired to explanation, cs/cb refers on same Resource Block, and multiple cells are passed through scheduling and chosen two respectively
The relatively low ue of individual wave beam forming dependency is transmitted, and each cell is only the service ue transmission data of itself；Jt refers to
On same Resource Block, through consulting to form a big multi-antenna base station, on a Resource Block, scheduling is many simultaneously for multiple cells
Individual belong to these cells ue, each cell needs to send the data of all ue, and this process can be regarded as multi-user multi-antenna
The process of transmission.Cs/cb and jt can more fully utilize resource, so that the ue number that can simultaneously service in system is kept not
Become, compared to existing technology in using abs technology in some subframes system can only serve a ue simultaneously, or drawn using frequency band
In point, certain frequency band can only serve a ue and compares, and can more fully utilize resource, provides service for more ue.
Optionally, when described lpn cell is closed type through cutting, using cs/cb mode to described ue transmission data, then step
311 comprise the following steps:
S1, described first base station, according to described second channel information, calculate described second base station and adopt described first base station
The disturbed condition that the different pre-coding matrixes of pre-stored cause to a described ue, and according to described disturbed condition to described difference
Pre-coding matrix is ranked up, and obtains pre-coding matrix ordered set ω.
Be stored with described first base station much different pre-coding matrixes, whenever described first base station is sent out to the ue that it services
When sending data, described base station will therefrom select a pre-coding matrix to be transmitted.
After the second channel information that described first base station obtains between a described ue and described second base station it is possible to according to
Described second channel information, calculates the interference that described second base station is caused to a described ue using described difference pre-coding matrix
Situation, specific calculating process is aware that understanding for those skilled in the art, will not be described here.Calculate described interference feelings
After condition, described first base station can be ranked up to described difference pre-coding matrix according to described disturbed condition, obtains precoding
Matrix sort set ω, in described ω can be disturbed condition sequence from big to small or disturbed condition from small to large
Sequence, here is not limited.
Described ω is sent to described second base station by s2, described first base station.
S3, described second base station judge whether to meet the first pre-conditioned coupling ue and coupling pre-coding matrix.
Described first pre-conditioned inclusion: described second base station adopts mates pre-coding matrix to described coupling in described ω
When ue carries out data transmission, not only meet the qos demand of described coupling ue, and to the interference of a described ue not less than threshold
Value.Here, the interference to a described ue shows to meet the qos demand of a described ue not less than threshold value.
If existing, carrying out step s4-s5, if not existing, carrying out step s6-s7.
S4, described second base station adopt described coupling pre-coding matrix to described coupling ue transmission data, and described second
Base station sends match condition instruction message to described first base station；The match is successful for described match condition instruction message instruction.
Example, a mark match_ind can be carried, if described match_ in described match condition instruction message
Ind=1, then show that the match is successful for described match condition instruction message instruction, if described abs_ind=0, show described coupling feelings
Condition instruction message instruction coupling is unsuccessful.
After s5, described first base station receive described match condition instruction message, according to described first channel information, calculate institute
State laser propagation effect when first base station is transmitted to a described ue using described difference pre-coding matrix, obtain described transmission
The best optimum pre-coding matrix of effect, and carried out data transmission to a described ue using described optimum pre-coding matrix.
After the first channel information that described first base station obtains between a described ue and described first base station it is possible to according to
Described first channel information, when the described first base station of calculating is transmitted to a described ue using described difference pre-coding matrixes
Laser propagation effect, specific calculating process is aware that understanding for those skilled in the art, will not be described here.Calculate described
After laser propagation effect, described first base station can select best laser propagation effect corresponding optimum pre-coding matrix, carries out to described ue
Data transfer.
So, on same Resource Block, described first base station is using optimum pre-coding matrix to a described ue transmission number
According to, when described second base station adopts described coupling pre-coding matrix to described coupling ue transmission data, described second base station is to institute
With regard to very little, that is, two wave beam forming dependencys are chosen relatively respectively in described first base station and described second base station for the interference stating a ue
Low ue is transmitted, the interference very little to a described ue.
So with employing abs technology of the prior art or adopt frequency band partitioning technology, a Resource Block is (as a certain height
Frame or some frequency band) only serve a ue and compare, method provided in an embodiment of the present invention can improve resource utilization, and
Ensure that the qos demand of each ue.
S6, described second base station send match condition instruction message to described first base station；Described match condition instruction disappears
Breath instruction coupling is unsuccessful.
S7, described first base station are abandoned carrying out data transmission to a described ue.
If not existing, illustrate no matter how transmit the qos demand that all can not meet each ue, this means that described first
Base station cannot provide satisfied qos for a described ue, and therefore, described first base station is abandoned servicing for a ue.
Optionally, described lpn cell is open cell or hybrid cell, using jt mode to a described ue transmission
Data, then step 311 comprise the following steps:
Q1, described first base station send described first channel information and described second channel information to described second base station.
Q2, described second base station judge whether to meet according to described first channel information and described second channel information
Second pre-conditioned coupling ue.
Wherein, described second pre-conditioned inclusion: described second base station is to described coupling ue transmission data, described meeting
In the case of the qos demand of coupling ue, throughput of system is maximum.
If existing, carrying out step q3-q5, if not existing, carrying out step q6-q7.
Q3, described second base station calculate and obtain a described ue and described coupling ue corresponding optimal joint precoding square
Battle array, and the second pre-coding matrix using appropriate section composition in described optimal joint pre-coding matrix, to a described ue and
Coupling ue carries out data transmission.
Here, described second base station and first base station can be formed a big multi-antenna base station, a ue and
Join ue as two ue under this big base station, carry out multi-antenna multi-user mimo(multiple-input multiple-
Output, multiple-input and multiple-output) transmission, calculate optimal joint pre-coding matrix, its concrete calculated case is people in the art
Member has a clear understanding of, and will not be described in detail herein.
So described second base station can be carried out mimo transmission, using portion corresponding in described optimal joint pre-coding matrix
The second pre-coding matrix being grouped into, carries out data transmission to a described ue and coupling ue.
Q4, described second base station send to described first base station and carry described optimal joint pre-coding matrix and described
Join the match condition instruction message of ue information, the match is successful for described match condition instruction message instruction.
Q5, described first base station receive described match condition and indicate message, and adopt described optimal joint pre-coding matrix
First pre-coding matrix of middle appropriate section composition, carries out data transmission to a described ue and described coupling ue.
So with employing abs technology of the prior art or adopt frequency band partitioning technology, a Resource Block is (as a certain height
Frame or some frequency band) only serve a ue and compare, method provided in an embodiment of the present invention can improve resource utilization, and
Ensure that the qos demand of each ue.
Q6, described second base station send match condition instruction message to described first base station；Described match condition instruction disappears
Breath instruction coupling is unsuccessful.
Q7, described first base station are abandoned carrying out data transmission to a described ue.
If not existing, illustrate no matter how transmit the qos demand that all can not meet each ue, this means that described first
Base station cannot provide satisfied qos for a described ue, and therefore, described first base station is abandoned servicing for a ue.
Method provided in an embodiment of the present invention to be described as a example heterogeneous network system shown in below by Fig. 4.Shown in Fig. 4
Heterogeneous network system in, macro base station 41 cover macrocell in be deployed with multiple lpn it is assumed herein that described first base station is
Macro base station 41, described second base station is lpn42, and a described ue43 is the signing ue of described macro base station 41, a described ue43
It is in macrocell edge, the lpn cell covering from described lpn42 is close, be easily subject to the strong jamming of described lpn42.
As shown in figure 4, described macro base station 41 is when to a described ue43 transmission data, can send to a described ue43
Beep-page message, after a described ue43 receives described beep-page message, will send page-response message to described macro base station 41,
A described ue43 can measure the interference parameter of lpn42 simultaneously, and a described ue43 can detect the interference parameter of lpn42
Exceed threshold value, then a ue43 just feeds back described interference parameter to described macro base station 41.
After macro base station 41 receives the interference parameter of a described ue43 feedback；Can be according to described interference parameter and described
The service quality qos demand of the first ue, carries out abs needs estimate, obtains abs pattern as shown in Figure 5, in described abs pattern
Indicating that described second base station needs the 4th sub-frame configuration is blank subframe, and the abs pattern shown in Fig. 5 is sent out by described macro base station 41
Give lpn42, can described lpn42 judge, when meeting the qos demand of ue of its service, configure described abs pattern, because institute
State only one of which ue44 in lpn42, even if the resource in described lpn42 is configured with abs pattern and is also fully able to described in load
Ue44, therefore described lpn42 may determine that when meeting the qos demand of ue44 of its service, can configure described abs pattern,
Therefore described lpn42 will configure the abs pattern shown in Fig. 5, and send to described macro base station 41 and carry judged result abs_
The instruction message of ind=1, it is described that described macro base station 41 just knows that described lpn42 can configure after receiving described instruction message
Abs pattern, therefore described macro base station 41 will be left in the 4th subframe of blank to first in described lpn42 according to described abs pattern
Ue transmission data.So in described 4th subframe, described lpn42 will not send data, and now described macro base station 41 is in the 4th son
To a described ue43 transmission data on frame, so when described in a ue43 would not be disturbed by described lpn42.
So, only in the feelings of the qos demand meeting a described ue and the qos demand of the ue of described second base station service
Under condition, it is transmitted using abs pattern, the qos demand of ue can be effectively ensured.
Certainly, if there being a lot of ue44 in lpn42, after being configured with described abs pattern, its resource is possible to described lpn42
It is unsatisfactory for the qos demand of the ue44 of its service, now, described lpn42 will send to described macro base station 41 and carry judgement knot
The instruction message of fruit abs_ind=0, so described macro base station will select to adopt cs/cb according to the mode of operation of lpn42, or
Select by the way of jt to a ue43 transmission data, detailed process refers to above-mentioned method.
The method of heterogeneous network medium and small interval interference coordination provided in an embodiment of the present invention, by first base station according to described
The qos demand to a described ue interference parameter and a described ue for second base station, calculates and obtains abs pattern, and described
When the qos demand estimation of the ue that the second base station services according to it goes out to configure described abs pattern, according to described abs pattern,
Described second base station is left in the subframe of blank to a ue transmission data.The method that the present invention provides only is meeting described first
In the case of the qos demand of ue of the qos demand of ue and described second base station service, it is transmitted using abs pattern, permissible
The qos demand of ue is effectively ensured.
In addition, when described second base station can not configure abs pattern, described first base station can be according to the work of lpn cell
Operation mode selects to adopt cs/cb, or selects by the way of jt to a ue transmission data, described cs/cb or jt mode
Service can be provided for multiple ue on a Resource Block, more fully utilize resource, make can to service in system simultaneously
Ue number keeps constant, can only serve a ue with of the prior art in some subframe simultaneously, or some frequency band can only
Serve a ue to compare, can more fully utilize resource, provide service for more ue.
Embodiment 3
The embodiment of the present invention furthermore present the device realizing each step and method in above-described embodiment 1 and embodiment 2
Embodiment.
As shown in fig. 6, being a kind of first base station provided in an embodiment of the present invention, described first base station includes: transmitting element
601, receiving unit 602 and processing unit 603.
Transmitting element 601, for sending beep-page message to first user equipment ue, so that a described ue is receiving
After described beep-page message, the interference parameter of detection the second base station, and exceed threshold in the interference parameter described second base station is detected
During value, feed back described interference parameter to described first base station.
Receiving unit 602, for receiving the interference parameter of a described ue feedback.
Processing unit 603, for the clothes of the described interference parameter that received according to receiving unit 602 and a described ue
Business quality qos demand, carries out almost blank subframe abs needs estimate, obtains abs pattern.
Described transmitting element 601, is additionally operable to send, to the second base station, the described abs pattern that described processing unit 603 obtains,
So that described second base station is after can the qos demand estimation of the ue being serviced according to it go out configure described abs pattern, to described
First base station feedback instruction message.
Described receiving unit 602, is additionally operable to receive described instruction message.
Described processing unit 603, is additionally operable to the described instruction message instruction that receives in described receiving unit 602 described the
When two base stations can configure described abs pattern, it is left in the subframe of blank to institute in described second base station according to described abs pattern
State a ue transmission data.
When described instruction message indicates that described second base station can not configure described abs pattern, described transmitting element
601, be additionally operable to described first ue send measurement instruction message so that a described ue measure and feed back a described ue with
Second channel information between the first channel information between described first base station, and a described ue and described second base station.
Described receiving unit 602, is additionally operable to receive described first channel information and the second channel of a described ue feedback
Information.
Described processing unit 603, is additionally operable to according to described first channel information and described second channel information, for lpn
The type of cell, by with the cooperating of described second base station, to a described ue transmission data, wherein, it is little that described lpn covers
Area is lpn cell.
If described lpn cell is closed type through cutting,
Described processing unit 603, is additionally operable to according to described second channel information, calculates described second base station and adopts described the
The disturbed condition that the different pre-coding matrixes of one base station pre-stored cause to a described ue, and according to described disturbed condition to institute
State different pre-coding matrixes to be ranked up, obtain pre-coding matrix ordered set ω；Described transmitting element 601, is additionally operable to institute
The described ω stating processing unit 603 acquisition is sent to described second base station, so that described second base station is judging whether
After coupling ue, send match condition instruction message to described first base station；Described receiving unit 602, is additionally operable to receive described
Join situation instruction message；Described processing unit 603, specifically for described match condition instruction message instruction the match is successful when,
According to described first channel information, calculate described first base station and using described difference pre-coding matrix, a described ue is passed
Laser propagation effect when defeated, obtains the best optimum pre-coding matrix of described laser propagation effect, and using described optimum pre-coding matrix
Carry out data transmission to a described ue；When described match condition instruction message instruction coupling is unsuccessful, abandon to described the
One ue carries out data transmission.
If described lpn cell is open cell or hybrid cell,
Described transmitting element 601, is additionally operable to send described first channel information and described second letter to described second base station
Road information, so that described second base station, after judging whether to mate ue, sends to described first base station and carries optimum
The match condition instruction message of joint pre-coding matrix and described coupling ue information；Described receiving unit 602, is additionally operable to receive institute
State match condition instruction message；Described processing unit 603, specifically in the instruction message instruction of described match condition, the match is successful
When, using the first pre-coding matrix of row composition corresponding in described optimal joint pre-coding matrix, to a described ue and institute
State coupling ue to carry out data transmission；When described match condition instruction message instruction coupling is unsuccessful, abandon to a described ue
Carry out data transmission.
The embodiment of the present invention additionally provides a kind of second base station, as shown in fig. 7, described second base station includes: receiving unit
701 and processing unit 702.
Receiving unit 701, for receiving the almost blank subframe abs pattern of first base station transmission；
Can processing unit 702, for judging, when meeting the qos demand of ue of its service, configure described abs pattern；
Described processing unit 702, for when judging to configure described abs pattern, configuring described abs pattern, and to
Described first base station feedback instruction message, described instruction message indicates that described second base station can configure described abs pattern, so that
Obtain described first base station to be left in the subframe of blank to a ue transmission data in described second base station.
When judging to configure described abs pattern, described processing unit 702, it is additionally operable to anti-to described first base station
Feedback instruction message, described instruction message indicates that described second base station can not configure described abs pattern, so that described first base station
By with the cooperating of described second base station, to a described ue transmission data.
If the lpn cell that described lpn covers is closed type through cutting,
Described receiving unit 701, is additionally operable to receive pre-coding matrix ordered set ω that described first base station sends；Described
Processing unit 702, specifically for: judge whether to meet the first pre-conditioned coupling ue and coupling pre-coding matrix, institute
State the first pre-conditioned inclusion: described second base station carries out data using coupling pre-coding matrix in described ω to described coupling ue
During transmission, not only meet the qos demand of described coupling ue, and to the interference of a described ue not less than threshold value；Judging
In the presence of, using described coupling pre-coding matrix to described coupling ue transmission data, and described second base station is to described first base
Transmission match condition of standing indicates message, and the match is successful, so that described first base station is adopted for described match condition instruction message instruction
With the best optimum pre-coding matrix of laser propagation effect in the different pre-coding matrixes of pre-stored, carry out data biography to a described ue
Defeated；When judging not exist, send match condition instruction message to described first base station, described match condition instruction message refers to
Show that coupling is unsuccessful, so that described first base station is abandoned carrying out data transmission to a described ue.
Or, if the lpn cell that described lpn covers is open cell or hybrid cell, described receiving unit
701, it is additionally operable to receive the first channel information between a described ue of described first base station transmission and described first base station, and
Second channel information between a described ue and described second base station；Described processing unit 702, specifically for: according to described
One channel information and described second channel information judge whether to meet the second pre-conditioned coupling ue, and described second presets
Condition includes: when described second base station adopts Resource Block to described coupling ue transmission data, in the qos need meeting described coupling ue
In the case of asking, throughput of system is maximum；In the presence of judging, calculate the described ue of acquisition and described coupling ue is corresponding
Optimal joint pre-coding matrix, and the second precoding square using appropriate section composition in described optimal joint pre-coding matrix
Battle array, carries out data transmission to a described ue and described coupling ue；Send to described first base station and carry described optimal joint
The match condition instruction message of pre-coding matrix and described coupling ue information, described match condition instruction message instruction is mated into
Work(, so that described first base station adopts the first precoding square of appropriate section composition in described optimal joint pre-coding matrix
Battle array, carries out data transmission to a described ue and described coupling ue；When judging not exist, to the transmission of described first base station
Join situation instruction message；Described match condition instruction message instruction coupling is unsuccessful, so that described first base station is abandoned to institute
State a ue to carry out data transmission.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can be passed through
Completing, aforesaid program can be stored in a computer read/write memory medium the related hardware of programmed instruction, this program
Upon execution, execute the step including said method embodiment；And aforesaid storage medium includes: rom, ram, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should described with scope of the claims be
Accurate.
Claims (10)
1. a kind of method of heterogeneous network medium and small interval interference coordination is it is characterised in that include:
First base station sends beep-page message to first user equipment ue, so that a described ue is receiving described beep-page message
Afterwards, detect the interference parameter of the second base station, and when the interference parameter described second base station is detected exceedes threshold value, to described the
Interference parameter described in one base station feedback；
Described first base station receives the interference parameter of a described ue feedback；And according to described interference parameter and a described ue
Service quality qos demand, carry out almost blank subframe abs needs estimate, obtain abs pattern；
Described first base station sends described abs pattern to the second base station, so that described second base station is in the ue being serviced according to it
Qos demand estimation go out to configure described abs pattern after, to described first base station feed back instruction message；
Described first base station receives described instruction message；
If described instruction message indicates that described second base station can configure described abs pattern, described first base station is according to described
Abs pattern is left in the subframe of blank to a described ue transmission data in described second base station；
Wherein, described first base station is macro base station, and described second base station is low power base station lpn；Or, described second base station is
Macro base station, described first base station is lpn；
If described instruction message indicates that described second base station can not configure described abs pattern, methods described also includes:
Described first base station sends measurement instruction message to a described ue, so that a described ue measures and feeds back described the
Second channel letter between the first channel information between one ue and described first base station, and a described ue and described second base station
Breath；
Described first base station receives described first channel information and the second channel information of a described ue feedback；
Described first base station, according to described first channel information and described second channel information, for the type of lpn cell, is passed through
With cooperating of described second base station, to a described ue transmission data, wherein, the cell that described lpn covers is lpn cell；
Wherein, the type of described lpn cell may is that closed type through cutting or open cell or hybrid cell.
If 2. method according to claim 1 is it is characterised in that described lpn cell is closed type through cutting, described the
One base station according to described first channel information and described second channel information, for the type of lpn cell, by with described second
The cooperation of base station, to a described ue transmission data, comprising:
Described first base station, according to described second channel information, calculates described second base station and adopts described first base station pre-stored
The disturbed condition that different pre-coding matrixes cause to a described ue, and according to described disturbed condition to described difference precoding square
Battle array is ranked up, and obtains pre-coding matrix ordered set ω；
Described ω is sent to described second base station by described first base station, so that described second base station is judging whether
After joining ue, send match condition instruction message to described first base station；
Described first base station receives described match condition and indicates message；
If the match is successful for described match condition instruction message instruction, described first base station, according to described first channel information, is counted
Calculate laser propagation effect when described first base station is transmitted to a described ue using described difference pre-coding matrix, obtain described
The best optimum pre-coding matrix of laser propagation effect, and data biography is carried out to a described ue using described optimum pre-coding matrix
Defeated；
If described match condition instruction message instruction coupling is unsuccessful, described first base station is abandoned carrying out to a described ue
Data transfer.
If 3. method according to claim 1 is it is characterised in that described lpn cell is open cell or hybrid little
Area, then, described first base station, according to described first channel information and described second channel information, for the type of lpn cell, is led to
Cross and the cooperating of described second base station, to a described ue transmission data, including:
Described first base station sends described first channel information and described second channel information to described second base station, so that institute
State the second base station judge whether mate ue after, to described first base station send carry optimal joint pre-coding matrix and
The match condition instruction message of described coupling ue information；
Described first base station receives described match condition and indicates message；
If the match is successful for described match condition instruction message instruction, described first base station adopts described optimal joint precoding
In matrix, the first pre-coding matrix of corresponding row composition, carries out data transmission to a described ue and described coupling ue；
If described match condition instruction message instruction coupling is unsuccessful, described first base station is abandoned carrying out to a described ue
Data transfer.
4. a kind of method of heterogeneous network medium and small interval interference coordination is it is characterised in that include:
Second base station receives the almost blank subframe abs pattern that first base station sends；
Can described second base station judge, when meeting the service quality qos demand of user equipment ue of its service, configure described
Abs pattern；
If described abs pattern can be configured, described second base station configures described abs pattern, and refers to described first base station feedback
Show message, described instruction message indicates that described second base station can configure described abs pattern, so that described first base station is in institute
State the second base station to be left in the subframe of blank to a ue transmission data；
Wherein, described first base station is macro base station, and described second base station is low power base station lpn；Or, described second base station is
Macro base station, described first base station is lpn；
If described abs pattern can not be configured, described second base station sends feedback instruction message, described finger to described first base station
Show message indicate described second base station can not configure described abs pattern so that described first base station by with described second base
The cooperation stood, to a described ue transmission data.
5. method according to claim 4 is it is characterised in that include: if the lpn cell that described lpn covers is closed
Cell, then methods described also include:
Described second base station receives pre-coding matrix ordered set ω that described first base station sends；
Described second base station judges whether to meet the first pre-conditioned coupling ue and mates pre-coding matrix, described first
Pre-conditioned inclusion: described second base station is carried out data transmission to described coupling ue using coupling pre-coding matrix in described ω
When, not only meet the qos demand of described coupling ue, and to the interference of a described ue not less than threshold value；
If judging to exist, described second base station adopts described coupling pre-coding matrix to described coupling ue transmission data, and
Described second base station sends match condition instruction message to described first base station, and described match condition instruction message instruction is mated into
Work(, so that described first base station is using the best optimum precoding square of laser propagation effect in the different pre-coding matrixes of pre-stored
Battle array, carries out data transmission to a described ue；
If judging not exist, described second base station sends match condition instruction message to described first base station；Described coupling
Situation instruction message instruction coupling is unsuccessful, so that described first base station is abandoned carrying out data transmission to a described ue.
If method according to claim 4 it is characterised in that described lpn cover lpn cell be open cell or
Hybrid cell, then methods described also include:
Described second base station receives the first channel letter between a described ue of described first base station transmission and described first base station
Breath, and the second channel information between a described ue and described second base station；
Described second base station judges whether to meet second pre- according to described first channel information and described second channel information
If coupling ue of condition, described second pre-conditioned inclusion: when described second base station is to described coupling ue transmission data, meeting
In the case of the qos demand of described coupling ue, throughput of system is maximum；
If judging to exist, described second base station calculates the described ue of acquisition and the corresponding optimal joint of described coupling ue is pre-
Encoder matrix, and the second pre-coding matrix using appropriate section composition in described optimal joint pre-coding matrix, to described the
One ue and described coupling ue carry out data transmission；
Described second base station sends to described first base station and carries described optimal joint pre-coding matrix and described coupling ue letter
The match condition instruction message of breath, the match is successful, so that described first base station adopts for described match condition instruction message instruction
First pre-coding matrix of appropriate section composition in described optimal joint pre-coding matrix, to a described ue and described coupling ue
Carry out data transmission；
If judging not exist, described second base station sends match condition instruction message to described first base station；Described coupling
Situation instruction message instruction coupling is unsuccessful, so that described first base station is abandoned carrying out data transmission to a described ue.
7. a kind of first base station is it is characterised in that include:
Transmitting element, for sending beep-page message to first user equipment ue, so that a described ue seeks described in receive
After exhaling message, the interference parameter of detection the second base station, and when the interference parameter described second base station is detected exceedes threshold value, to
Described first base station feeds back described interference parameter；
Receiving unit, for receiving the interference parameter of a described ue feedback；
Processing unit, for service quality qos of the described interference parameter that received according to receiving unit and a described ue
Demand, carries out almost blank subframe abs needs estimate, obtains abs pattern；
Described transmitting element, is additionally operable to send, to the second base station, the described abs pattern that described processing unit obtains, so that described
Second base station is after can the qos demand estimation of the ue being serviced according to it go out configure described abs pattern, anti-to described first base station
Feedback instruction message；
Described receiving unit, is additionally operable to receive described instruction message；
Described processing unit, the described instruction message being additionally operable to receive in described receiving unit indicates that described second base station can
When configuring described abs pattern, it is left in the subframe of blank in described second base station according to described abs pattern and passes to a described ue
Transmission of data；
Described transmitting element, is additionally operable to when described instruction message indicates that described second base station can not configure described abs pattern,
Send measurement instruction message to a described ue, so that a described ue measures and feeds back a described ue and described first base
Second channel information between the first channel information between standing, and a described ue and described second base station；
Described receiving unit, is additionally operable to receive described first channel information and the second channel information of a described ue feedback；
Described processing unit, is additionally operable to according to described first channel information and described second channel information, for the class of lpn cell
Type, by with the cooperating of described second base station, to a described ue transmission data, wherein, the cell that described lpn covers is lpn
Cell；
Wherein, the type of described lpn cell may is that closed type through cutting or open cell or hybrid cell.
If 8. first base station according to claim 7 is it is characterised in that described lpn cell is closed type through cutting,
Described processing unit, is additionally operable to according to described second channel information, calculates described second base station and adopts described first base station
The disturbed condition that the different pre-coding matrixes of pre-stored cause to a described ue, and according to described disturbed condition to described difference
Pre-coding matrix is ranked up, and obtains pre-coding matrix ordered set ω；
Described transmitting element, the described ω being additionally operable to obtain described processing unit is sent to described second base station, so that institute
State the second base station after judging whether to mate ue, send match condition instruction message to described first base station；
Described receiving unit, is additionally operable to receive described match condition instruction message；
Described processing unit, specifically for when the match is successful for the instruction message instruction of described match condition, according to the described first letter
Road information, calculates transmission effect when described first base station is transmitted to a described ue using described difference pre-coding matrix
Really, obtain the best optimum pre-coding matrix of described laser propagation effect, and using described optimum pre-coding matrix to a described ue
Carry out data transmission；When described match condition instruction message instruction coupling is unsuccessful, abandon carrying out data to a described ue
Transmission；
If described lpn cell is open cell or hybrid cell,
Described transmitting element, is additionally operable to send described first channel information and described second channel information to described second base station,
So that described second base station is after judging whether to mate ue, carries optimal joint to the transmission of described first base station and prelist
The match condition instruction message of code matrix and described coupling ue information；
Described receiving unit, is additionally operable to receive described match condition instruction message；
Described processing unit, specifically for when the match is successful for the instruction message instruction of described match condition, using described optimum connection
Close the first pre-coding matrix of corresponding row composition in pre-coding matrix, carry out data biography to a described ue and described coupling ue
Defeated；When described match condition instruction message instruction coupling is unsuccessful, abandon carrying out data transmission to a described ue.
9. a kind of second base station is it is characterised in that include:
Receiving unit, for receiving the almost blank subframe abs pattern of first base station transmission；
Can processing unit, for judging, when meeting the service quality qos demand of user equipment ue of its service, configure described
Abs pattern；
Described processing unit, for when judging to configure described abs pattern, configures described abs pattern, and to described first
Base station feedback indicates message, and described instruction message indicates that described second base station can configure described abs pattern, so that described the
One base station is left in the subframe of blank to a ue transmission data in described second base station；
Described processing unit, is additionally operable to, when judging to configure described abs pattern, disappear to the feedback instruction of described first base station
Breath, described instruction message indicate described second base station can not configure described abs pattern so that described first base station by with institute
State the cooperation of the second base station, to a described ue transmission data.
If 10. the second base station according to claim 9 is it is characterised in that the lpn cell that lpn covers is closed type through cutting,
Then,
Described receiving unit, is additionally operable to receive pre-coding matrix ordered set ω that described first base station sends；
Described processing unit, specifically for:
Judge whether to meet the first pre-conditioned coupling ue and coupling pre-coding matrix, described first pre-conditioned bag
Include: described second base station, using when in described ω, coupling pre-coding matrix carries out data transmission to described coupling ue, not only meets
The qos demand of described coupling ue, and to the interference of a described ue not less than threshold value；
In the presence of judging, using described coupling pre-coding matrix to described coupling ue transmission data, and described second base station
Send match condition instruction message to described first base station, the match is successful for described match condition instruction message instruction, so that institute
State first base station using the best optimum pre-coding matrix of laser propagation effect in the different pre-coding matrixes of pre-stored, to described first
Ue carries out data transmission；
When judging not exist, send match condition instruction message to described first base station, described match condition indicates message
Instruction coupling is unsuccessful, so that described first base station is abandoned carrying out data transmission to a described ue；
Or, if the lpn cell that described lpn covers is open cell or hybrid cell,
Described receiving unit, is additionally operable to receive first between a described ue of described first base station transmission and described first base station
Second channel information between channel information, and a described ue and described second base station；
Described processing unit, specifically for:
Judge whether to meet the second pre-conditioned coupling according to described first channel information and described second channel information
Ue, described second pre-conditioned inclusion: when described second base station is to described coupling ue transmission data, meeting described coupling ue's
In the case of qos demand, throughput of system is maximum；
In the presence of judging, calculate and obtain a described ue and described coupling ue corresponding optimal joint pre-coding matrix, and
Using the second pre-coding matrix of appropriate section composition in described optimal joint pre-coding matrix, to a described ue and described
Join ue to carry out data transmission；Send to described first base station and carry described optimal joint pre-coding matrix and described coupling ue letter
The match condition instruction message of breath, the match is successful, so that described first base station adopts for described match condition instruction message instruction
First pre-coding matrix of appropriate section composition in described optimal joint pre-coding matrix, to a described ue and described coupling ue
Carry out data transmission；
When judging not exist, send match condition instruction message to described first base station；Described match condition indicates message
Instruction coupling is unsuccessful, so that described first base station is abandoned carrying out data transmission to a described ue.
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