CN103687035B - The user scheduling method of cooperative multipoint transmission COMP technology - Google Patents
The user scheduling method of cooperative multipoint transmission COMP technology Download PDFInfo
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Abstract
The invention provides a kind of user scheduling method of cooperative multipoint transmission COMP technology, using successive ignition, first sector to first time iteration, it is scheduling using single sector dispatching method, the user profile that other sectors are dispatched out with the sector before current sector is scheduling to current sector, dispatches out active user.The present invention is by the way of poll, improve SLINR and be circulated priority scheduling, take into account and consider the principle that SINR maximizes and interference leakage minimizes, by combining all user situations considering multiple cells, determine the user of cooperative transmission and specific precoding, thus emphasis lifts the spectrum efficiency of cell edge.
Description
Technical field
The present invention relates to cooperative multipoint transmission COMP technical field, particularly to the user scheduling method of cooperative multipoint transmission COMP technology.
Background technology
Cooperative multipoint transmission COMP is 3GPP in R10-R11 stage primary study and standardized technology.Compared with traditional MIMO, COMP technology is based on each cooperative base station to downlink channel state information（CSI：channel state information）With sharing of the obstructed degree of user data information, the interference that script is adjacent cell is changed into by useful information by the cooperation of minizone base station, substantially breach the restriction to spectrum efficiency for the unicast, compared with traditional interference cancellation techniques, COMP passes through dynamical CSCW between geographically separated multiple base stations, reduce presence of intercell interference, lifting cell edge throughput and throughput of system, lift system performance, emphasis lifts Cell Edge User spectrum efficiency.
COMP mainly comprises following two：Cooperative scheduling（CS）And joint transmission（JT）.Cooperative scheduling, that is, each cooperative base station only service the user in respective cell by shared schedule information, while ensureing this cell serves quality, reduce the interference to other cells neighbouring；Joint transmission is to be got up to one or more users transmission data by shared data information consolidation in each base station.
Because cooperative multipoint transmission needs transmission information between multiple base stations, between base station, the characteristic of return link directly affects the performance of cooperative multipoint transmission.During cooperative scheduling, it is difficult to take into account the minimum principle with maximum capacity of interference, and calculates more complicated, the justice between sector can not be guaranteed, and causes the spectrum efficiency of cell edge still cannot meet the demand of user.
Content of the invention
It is an object of the invention to provide a kind of user scheduling method of cooperative multipoint transmission COMP technology, the method is passed through to combine the situation considering all users of multiple cells, determine the user of cooperative transmission and specific precoding, thus emphasis lifts the spectrum efficiency of cell edge.
For achieving the above object, technical scheme provided by the present invention is a kind of user scheduling method of cooperative multipoint transmission COMP technology,
Total K resource
For resource 1, to cooperation set of sectors 1,2 ..., m proceeds as follows：
Step 1 first time iteration
Step 1.1, to sector 1, dispatches out user 1 using single sector dispatching method；
Step 1.2, to sector 2, according to the information of sector 1 scheduled user 1, the precoding determining user using improvement SLINR, is scheduling, dispatches out user 2；
Step 1.3, to sector 3, according to the information of sector 1,2 scheduled users 1,2, the precoding determining user using improvement SLINR, is scheduling, dispatches out user 3；
Step 1.m to sector m, according to sector 1,2 ..., m-1 scheduled user 1,2 ..., the information of m-1, using the precoding improving SLINR and determining user, be scheduling, dispatch out user m；
Second iteration of step 2
Step 2.1 to sector 1, according to sector 2 ..., m-1, m scheduled user 2 ..., the information of m-1, m, using the precoding improving SLINR and determining user, be scheduling, dispatch out user 12’；
Step 2.2 to sector 2, according to sector 1,3 ..., m-1, m scheduled user 12', 3 ..., the information of m-1, m, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 22’；
Step 2.3 to sector 3, according to sector 1,2,4 ..., m-1, m scheduled user 12’、22' ..., the information of m-1, m, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 32’；
Step 2.m to sector m, according to sector 1,2 ..., m-1 scheduled user 12’、22’、……、m-12' information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user m2’；
Step n nth iteration
Step n.1 to sector 1, according to sector 2 ..., m-1, m scheduled user 2n-1’、……、m-1n-1’、mn-1' information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 1n’；
Step n.2 to sector 2, according to sector 1,3 ..., m-1, m scheduled user 1n、3n-1’、…、mn-1' information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 2n’；
Step n.3 to sector 3, according to sector 1,2,4 ..., m-1, m scheduled user 1n、2n…、mn-1' information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 3n’；
Step n.m to sector m, according to sector 1,2 ..., m-1 scheduled user 1n’、2n、……、m-1n' information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user mn’；
For resource 2, to cooperation set of sectors 1,2 ..., m, first sector 2 is scheduling in each iteration, the dispatching method of other cooperation set of sectors is identical with the operation in resource 1：
First time iteration
Step 1.1, to sector 2, dispatches out user 2 using single sector dispatching method；
Step 1.2, to sector 3, according to the information of sector 2 scheduled user 2, the precoding determining user using improvement SLINR, is scheduling, dispatches out user 3；
Step 1.m-1 to sector m, according to sector 2 ..., m-1 scheduled user 2 ..., m-1 information, using the precoding improving SLINR and determining user, be scheduling, dispatch out user m；
Step 1.m to sector 1, according to sector 2 ..., m scheduled user 2 ..., m information, using the precoding improving SLINR and determining user, be scheduling, dispatch out user 1；
For resource 3, to cooperation set of sectors 1,2 ..., m, first sector 3 is scheduling in each iteration, other are identical with the operation of resource 1.
For resource K, first sector (K mod m) is scheduling in each iteration, other are similar with the operation of resource 1.
Wherein, m represents sector and corresponding user, and n represents iterationses.
Further, described improvement SLINR is
Wherein, ViRepresent the pre-coding matrix that user i uses,Represent the channel covariance matrices comprising channel large scale information of sector j to user k, α represents white Gaussian noise power, I0iRepresent that user i is disturbed by from other sectors,Represent that user x receives total interference that the total interference not comprising to come from sector i or do not comprise comes from the most several interference sectors of sector i, VHRepresent the conjugate transpose of V, tr (A) represents the mark seeking square formation, refers to the sum of the leading diagonal each element of A, user's collection of s each sector scheduling in the coordination set of sectors for i, s1For one of user collection s user.
Further, described single sector dispatching method adopts PF algorithm.
Further, the precoding of described user 1 determines according to single sector method for precoding.
Further, described single sector method for precoding is SINR maximization principle.
Further, the dispatching method of described user 2, when coordinating sector for 3, method is as follows：
The Resource Block 1 to sector 1 for the step 1, according to single sector dispatching algorithm, dispatches out user, is denoted as user 1；
Step 2 is scheduling to same piece of resource of sector 2, and according to sector 1, whether scheduled user 1 is coordinates user, carries out different process：
If i. user 1 is the coordination set of sectors that non-coordinating user or sector 2 are not belonging to user 1, it is that user is dispatched in sector 2 according to single sector dispatching algorithm, is denoted as user 2, the precoding of this user determines according to single sector method for precoding；
. if user 1 is coordinates user, and sector 2 belongs to the coordination set of sectors of user 1, then determine scheduled user and the precoding of sector 2 according to improvement SLINR maximization principle, and concrete grammar is：For sector 2 all users according to maximization principle
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 2.
Further, the dispatching method of described user 3, when coordinating sector number for 3, method is：According to the scheduling result of sector 1 and sector 2, sector 3 is scheduling, whether belongs to the coordination sector of user 1 and user 2 according to sector 3, carry out different process；
If sector 3 belongs to the coordination set of sectors of user 1,2, determine scheduled user and the precoding of sector 3 according to improving SLINR maximization principle, concrete grammar is, for sector 3 all users according to maximization principle,
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 3；
If sector 3 belongs to the coordination set of sectors of user 1, it is not belonging to the coordination set of sectors of user 2, scheduled user and the precoding of sector 3 is then determined according to improvement SLINR maximization principle, only need to coordinate between sector 1 and sector 3, concrete grammar is, for sector 3 all users according to maximization principle
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 3；
If sector 3 belongs to the coordination set of sectors of user 2, it is not belonging to the coordination set of sectors of user 1, scheduled user and the precoding of sector 3 is then determined according to improvement SLINR maximization principle, only need to coordinate between sector 2 and sector 3, concrete grammar is, for sector 3 all users according to maximization principle
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 3.
Further, described second iteration is that dispatch situation according to sector 2 to sector m re-starts adjustment to sector 1 to sector m.
Further, described n is less than or equal to 3
Using technique scheme, technical scheme provided by the present invention considers the disturbance coordination method between fairness and sector, specific as follows：
（1）It is circulated priority scheduling using the mode of poll, reduce computation complexity, accomplish fairness between sector as far as possible.
（2）Carry out determination and the user scheduling of precoding using improvement SLINR, take into account and consider SINR maximization and interference leakage minimization principle.
（3）By combining all user situations considering multiple cells, determine the user of cooperative transmission and specific precoding, thus emphasis lifts the spectrum efficiency of cell edge.
Brief description
Fig. 1 is one embodiment of the invention schematic diagram；
Fig. 2 is another embodiment schematic diagram.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with the accompanying drawings and embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The invention provides a kind of user scheduling method of cooperative multipoint transmission COMP technology, comprise the steps of：
Total K resource
For resource 1, to cooperation set of sectors 1,2 ..., m proceeds as follows：
Step 1 first time iteration
Step 1.1, to sector 1, dispatches out user 1 using single sector dispatching method；
Step 1.2, to sector 2, according to the information of sector 1 scheduled user 1, the precoding determining user using improvement SLINR, is scheduling, dispatches out user 2；
Step 1.3, to sector 3, according to the information of sector 1,2 scheduled users 1,2, the precoding determining user using improvement SLINR, is scheduling, dispatches out user 3；
Step 1.m to sector m, according to sector 1,2 ..., m-1 scheduled user 1,2 ..., the information of m-1, using the precoding improving SLINR and determining user, be scheduling, dispatch out user m；
Second iteration of step 2
Step 2.1 to sector 1, according to sector 2 ..., m-1, m scheduled user 2 ..., the information of m-1, m, using the precoding improving SLINR and determining user, be scheduling, dispatch out user 12’；
Step 2.2 to sector 2, according to sector 1,3 ..., m-1, m scheduled user 12', 3 ..., the information of m-1, m, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 22’；
Step 2.3 to sector 3, according to sector 1,2,4 ..., m-1, m scheduled user 12’、22' ..., the information of m-1, m, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 32’；
Step 2.m to sector m, according to sector 1,2 ..., m-1 scheduled user 12’、22’、……、m-12' information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user m2’；
Step n nth iteration
Step n.1 to sector 1, according to sector 2 ..., m-1, m scheduled user 2n-1’、……、m-1n-1’、mn-1' information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 1n’；
Step n.2 to sector 2, according to sector 1,3 ..., m-1, m scheduled user 1n、3n-1’、…、mn-1' information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 2n’；
Step n.3 to sector 3, according to sector 1,2,4 ..., m-1, m scheduled user 1n、2n、4n-1’…、mn-1' information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 3n’；
Step n.m to sector m, according to sector 1,2 ..., m-1 scheduled user 1n’、2n、……、m-1n' information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user mn’；
For resource 2, to cooperation set of sectors 1,2 ..., m, first sector 2 is scheduling in each iteration, the dispatching method of other cooperation set of sectors is identical with the operation in resource 1：
First time iteration
Step 1.1, to sector 2, dispatches out user 2 using single sector dispatching method；
Step 1.2, to sector 3, according to the information of sector 2 scheduled user 2, the precoding determining user using improvement SLINR, is scheduling, dispatches out user 3；
Step 1.m-1 to sector m, according to sector 2 ..., m-1 scheduled user 2 ..., m-1 information, using the precoding improving SLINR and determining user, be scheduling, dispatch out user m；
Step 1.m to sector 1, according to sector 2 ..., m scheduled user 2 ..., m information, using the precoding improving SLINR and determining user, be scheduling, dispatch out user 1；
For resource 3, to cooperation set of sectors 1,2 ..., m, first sector 3 is scheduling in each iteration, other are identical with the operation of resource 1.
For resource K, first sector (K mod m) is scheduling in each iteration, other are similar with the operation of resource 1.
Wherein, m represents sector and corresponding user, and n represents iterationses.
Because cooperative multipoint transmission needs transmission information between multiple base stations, between base station, the characteristic of return link directly affects the performance of cooperative multipoint transmission.So in concrete research, being typically based on whether tunable sector belongs to same base station, being divided in base station and coordinating to coordinate and between base station, this programme is applied in base station to be coordinated to coordinate and between base station.
Fig. 1 is lower 3 sectors in same base station（sector1、sector2、sector3）Between carry out the schematic flow sheet of user scheduling and precoding.As shown in figure 1, user is divided into coordinates user and non-coordinating user according to certain criterion.Coordinates user represents that multiple base stations are worked in coordination with as this user's transmission data, non-coordinating user represents that same moment only one of which base station is this user's transmission data, system only considers the situation of serving BS it is not necessary to consider the dispatch situation of other sectors when determining resource, precoding etc. for user.Such as, determine that it coordinates base station according to the RSRP signal intensity that user receives, taking threshold value 10dB as a example, meet below equation
RSRPi-max(RSRPk)<10dB
And in base station user be more than 1 be all coordinates user, the base station meeting formula is the Consistent Sets of this user.This method is not related to the determination method of concrete Consistent Sets.
Particular user scheduling and precoding determine that flow process is as follows：
First time iteration
To sector 1, dispatch out user 1 using single sector dispatching method；
To sector 2, according to the information of sector 1 scheduled user 1, the precoding determining user using improvement SLINR, it is scheduling, dispatches out user 2；
To sector 3, according to the information of sector 1,2 scheduled users 1,2, the precoding determining user using improvement SLINR, it is scheduling, dispatches out user 3；
Second iteration
To sector 1, to sector 1, according to the information of sector 2,3 scheduled users 2,3, the precoding determining user using improvement SLINR, it is scheduling, dispatches out user 1'；
To sector 2, according to sector 1,3 scheduled user 1', 3 information, using the precoding improving SLINR and determining user, be scheduling, dispatch out user 2'；
To sector 3, according to the information of sector 1,2 scheduled user 1', 2', the precoding determining user using improvement SLINR, it is scheduling, dispatches out user 3'；
Nth iteration
To sector 1, according to the information of sector 2,3 scheduled users, the precoding determining user using improvement SLINR, it is scheduling, dispatches out user；
To sector 2, according to the information of sector 1,3 scheduled users, the precoding determining user using improvement SLINR, it is scheduling, dispatches out user；
To sector 3, according to the information of sector 1,2 scheduled users, the precoding determining user using improvement SLINR, it is scheduling, dispatches out user.
For Resource Block 1, proceed as follows
Iteration 1
1. the Resource Block 1 of pair sector 1, according to single sector dispatching algorithm（As PF algorithm）, dispatch out user, be denoted as user 1, the precoding of this user determines according to single sector method for precoding（As SINR maximization principle）, e.g., this method is not related to concrete single sector dispatching method and single sector method for precoding；
2. same piece of resource of pair sector 2 is scheduling, and according to sector 1, whether scheduled user 1 is coordinates user, carries out different process：
（1）If user 1 is the coordination set of sectors that non-coordinating user or sector 2 are not belonging to user 1, it is that user is dispatched in sector 2 according to single sector dispatching algorithm, is denoted as user 2, the precoding of this user determines according to single sector method for precoding；
（2）If user 1 is coordinates user, and sector 2 belongs to the coordination set of sectors of user 1, then according to scheduled user and the precoding improving SLINR maximization principle and determining sector 2, concrete grammar be for sector 2 all users according to maximization principle,
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 2.
3. the scheduling result according to sector 1 and sector 2, is scheduling to sector 3.With（2）Similar, whether belong to the coordination sector of user 1 and user 2 according to sector 3, carry out different process：
（1）If sector 3 belongs to the coordination set of sectors of user 1,2, determine scheduled user and the precoding of sector 3 according to improving SLINR maximization principle, concrete grammar be for sector 3 all users according to maximization principle
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 3.
In above formula,Represent that user 2 receives total interference（Or total interference of the most several interference sectors）, wherein do not comprise to come from sector 1 and disturb.So be equivalent to and employ total interference that user 1 and user 2 receive, respectively the leakage interference that user 1 and user 2 are subject to sector 3 is weighted, user that leakage that is so especially big for total interference, investigating disturbs L to affect very little wherein is it is possible to coordinate between without the excessive sector being considered for this user.
（2）If sector 3 belongs to the coordination set of sectors of user 1, it is not belonging to the coordination set of sectors of user 2, then determine scheduled user and the precoding of sector 3 according to improvement SLINR maximization principle（Method and 2（2）Similar）, only need between sector 1 and sector 3 coordinate, concrete grammar be for sector 3 all users according to maximization principle
Determine the coding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 3.
（3）If sector 3 belongs to the coordination set of sectors of user 2, it is not belonging to the coordination set of sectors of user 1, then determine scheduled user and the precoding of sector 3 according to improvement SLINR maximization principle（Method and 2（2）Similar）, only need between sector 2 and sector 3 coordinate, concrete grammar be for sector 3 all users according to maximization principle,
Wherein,The Eigenvalues Decomposition of eig representing matrix, I is unit frame；
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 3.
Iteration 2
Dispatch situation according to sector 2,3 is readjusted to sector 1,2,3.Its rule is the user profile dispatched out according to two sectors before current sector, determines the precoding of user using improved SLINR, dispatches out the user of current sector.
1. pair sector 1 is scheduling adjusting：The scheduling of 2, the 3 pairs of sectors 1 of user according to sector 2,3 scheduling is adjusted.
（1）Sector 1 belongs to the Consistent Sets of user 2 and 3, determines scheduled user and the precoding of sector 1 according to improving SLINR maximization principle, concrete grammar be for sector 1 all users according to maximization principle
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 1 '.
2. pair sector 2 is scheduling adjusting, and is dispatched according to sector 1 and for 1 ' and sector 3 scheduling user 3, the scheduling of sector 2 is adjusted, such as said method dispatches out user 2 '.
3. pair sector 3 is scheduling adjusting：User 1 ' is dispatched according to sector 1 and sector 2 scheduling user 2 ' is adjusted to the scheduling of sector 3, be that user 3 ' is dispatched out in sector 3.
It is iterated 3 according to the method described above ... ..., iteration n.
After determining scheduling user and the corresponding precoding of sector 1,2,3, according to the CQI to scheduled user for the precoding（Channel quality indicates）Continue adjustment, select suitable modulation coding mode to carry out data transmission on Resource Block 1.
The method of adjustment of other Resource Block is identical with Resource Block 1.
Fig. 2 is coordinated scheduling method schematic diagram between base station, as shown in Fig. 2 using the user scheduling method of cooperative multipoint transmission COMP technology provided by the present invention, being applicable not only to coordinate in base station, is also equally applicable to coordinate between base station.
In this dispatching method, improving SLINR is
In formula, ViRepresent the pre-coding matrix that user i uses,Represent the channel covariance matrices comprising channel large scale information of sector j to user k, α represents white Gaussian noise power, I0iRepresent that user i is disturbed by from other sectors,Represent that user x receives total interference that the total interference not comprising to come from sector i or do not comprise comes from the most several interference sectors of sector i, VHRepresent the conjugate transpose of V, tr (A) represents the mark seeking square formation, refers to the sum of the leading diagonal each element of A, user's collection of s each sector scheduling in the coordination set of sectors for i, s1For one of user collection s user.
The user scheduling method of cooperative multipoint transmission COMP technology provided by the present invention, iteration general execution 1-3 time, amount of calculation is less, carries out priority scheduling it is ensured that fairness between sector between sector by the way of poll.By combining all user situations considering multiple cells, determine the user of cooperative transmission and specific precoding, thus emphasis lifts the spectrum efficiency of cell edge.
The user scheduling method of cooperative multipoint transmission COMP technology provided by the present invention, using successive ignition, first sector to first time iteration, it is scheduling using single sector dispatching method, the user profile that other sectors are dispatched out with two sectors before current sector is scheduling to current sector, dispatches out active user.Take into account the minimum principle with maximum capacity of interference, computation complexity reduces, and speed speeds, and ensure that the fairness between sector to greatest extent.
Embodiment described above only have expressed embodiments of the present invention, and its description is more concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (8)
1. a kind of user scheduling method of cooperative multipoint transmission COMP technology it is characterised in that：
Total K resource
For resource 1, to cooperation set of sectors 1,2 ..., m proceeds as follows：
Step 1 first time iteration
Step 1.1, to sector 1, dispatches out user 1 using single sector dispatching method；
Step 1.2, to sector 2, according to the information of sector 1 scheduled user 1, the precoding determining user using improvement SLINR, is scheduling, dispatches out user 2；
Step 1.3, to sector 3, according to the information of sector 1,2 scheduled users 1,2, the precoding determining user using improvement SLINR, is scheduling, dispatches out user 3；
……
Step 1.m to sector m, according to sector 1,2 ..., m-1 scheduled user 1,2 ..., the information of m-1, using the precoding improving SLINR and determining user, be scheduling, dispatch out user m；
Second iteration of step 2
Step 2.1 to sector 1, according to sector 2 ..., m-1, m scheduled user 2 ..., the information of m-1, m, using the precoding improving SLINR and determining user, be scheduling, dispatch out user 12 ’；
Step 2.2 to sector 2, according to sector 1,3 ..., m-1, m scheduled user 12 ’, 3 ..., the information of m-1, m, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 22 ’；
Step 2.3 to sector 3, according to sector 1,2,4 ..., m-1, m scheduled user 12 ’、22 ’..., the information of m-1, m, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 32 ’；
……
Step 2.m to sector m, according to sector 1,2 ..., m-1 scheduled user 12 ’、22 ’、……、m-12 ’Information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user m2 ’；
……
Step n nth iteration
Step n.1 to sector 1, according to sector 2 ..., m-1, m scheduled user 2n-1 ’、……、m-1n-1 ’、mn-1 ’Information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 1n ’；
Step n.2 to sector 2, according to sector 1,3 ..., m-1, m scheduled user 1n ’、3n-1 ’、…、mn-1 ’Information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 2n ’；
Step n.3 to sector 3, according to sector 1,2,4 ..., m-1, m scheduled user 1n ’、2n ’、4n-1 ’…、mn-1 ’Information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user 3n ’；
……
Step n.m to sector m, according to sector 1,2 ..., m-1 scheduled user 1n ’、2n ’、……、m-1n ’Information, determine the precoding of user using improving SLINR, be scheduling, dispatch out user mn ’；
For resource 2, to cooperation set of sectors 1,2 ..., m, first sector 2 is scheduling in each iteration, the dispatching method of other cooperation set of sectors is identical with the operation in resource 1：
First time iteration
Step 1.1, to sector 2, dispatches out user 2 using single sector dispatching method；
Step 1.2, to sector 3, according to the information of sector 2 scheduled user 2, the precoding determining user using improvement SLINR, is scheduling, dispatches out user 3；
……
Step 1.m-1 to sector m, according to sector 2 ..., m-1 scheduled user 2 ..., m-1 information, using the precoding improving SLINR and determining user, be scheduling, dispatch out user m；
Step 1.m to sector 1, according to sector 2 ..., m scheduled user 2 ..., m information, using the precoding improving SLINR and determining user, be scheduling, dispatch out user 1；
……
For resource 3, to cooperation set of sectors 1,2 ..., m, first sector 3 is scheduling in each iteration, other are identical with the operation of resource 1；
……
For resource K, first sector (K mod m) is scheduling in each iteration, other are similar with the operation of resource 1；
Wherein, m represents sector and corresponding user, and n represents iterationses；And
Described improvement SLINR is
Wherein, ViRepresent the pre-coding matrix that user i uses,Represent the channel covariance matrices comprising channel large scale information of sector j to user k, α represents white Gaussian noise power, I0iRepresent that user i is disturbed by from other sectors,Represent that user x receives total interference that the total interference not comprising to come from sector i or do not comprise comes from the most several interference sectors of sector i, VHRepresent the conjugate transpose of V, tr (A) represents the mark seeking square formation, refers to the sum of the leading diagonal each element of A, user's collection of s each sector scheduling in the coordination set of sectors for i, s1For one of user collection s user.
2. cooperative multipoint transmission COMP technology according to claim 1 user scheduling method it is characterised in that：Described single sector dispatching method adopts PF algorithm.
3. cooperative multipoint transmission COMP technology according to claim 1 user scheduling method it is characterised in that：The precoding of described user 1 determines according to single sector method for precoding.
4. cooperative multipoint transmission COMP technology according to claim 3 user scheduling method it is characterised in that：Described single sector method for precoding is SINR maximization principle.
5., it is characterised in that the dispatching method of described user 2, when coordinating sector for 3, method is as follows for the user scheduling method of cooperative multipoint transmission COMP technology according to claim 1：
The Resource Block 1 to sector 1 for the step 1, according to single sector dispatching algorithm, dispatches out user, is denoted as user 1；
Step 2 is scheduling to same piece of resource of sector 2, and according to sector 1, whether scheduled user 1 is coordinates user, carries out different process：
If i. user 1 is the coordination set of sectors that non-coordinating user or sector 2 are not belonging to user 1, it is that user is dispatched in sector 2 according to single sector dispatching algorithm, is denoted as user 2, the precoding of this user determines according to single sector method for precoding；
. if user 1 is coordinates user, and sector 2 belongs to the coordination set of sectors of user 1, then determine scheduled user and the precoding of sector 2 according to improvement SLINR maximization principle, and concrete grammar is：For sector 2 all users according to maximization principle
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 2.
6. it is characterised in that the dispatching method of described user 3, when coordinating sector number for 3, method is the user scheduling method of cooperative multipoint transmission COMP technology according to claim 1：According to the scheduling result of sector 1 and sector 2, sector 3 is scheduling, whether belongs to the coordination sector of user 1 and user 2 according to sector 3, carry out different process；
If sector 3 belongs to the coordination set of sectors of user 1,2, determine scheduled user and the precoding of sector 3 according to improving SLINR maximization principle, concrete grammar is, for sector 3 all users according to maximization principle,
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 3；
If sector 3 belongs to the coordination set of sectors of user 1, it is not belonging to the coordination set of sectors of user 2, scheduled user and the precoding of sector 3 is then determined according to improvement SLINR maximization principle, only need to coordinate between sector 1 and sector 3, concrete grammar is, for sector 3 all users according to maximization principle
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 3；
If sector 3 belongs to the coordination set of sectors of user 2, it is not belonging to the coordination set of sectors of user 1, scheduled user and the precoding of sector 3 is then determined according to improvement SLINR maximization principle, only need to coordinate between sector 2 and sector 3, concrete grammar is, for sector 3 all users according to maximization principle
Determine the precoding of all users, and be scheduling according to this collaborative precoding determining and single sector dispatching principle, determine scheduling user, be denoted as user 3.
7. cooperative multipoint transmission COMP technology according to claim 1 user scheduling method it is characterised in that：Described second iteration is that the dispatch situation according to sector 2 to sector m re-starts adjustment to sector 1 to sector m.
8. cooperative multipoint transmission COMP technology according to claim 1 user scheduling method it is characterised in that：Described n is less than or equal to 3.
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