CN103475450B - A kind of method and device of descending self-adapting modulating-coding - Google Patents
A kind of method and device of descending self-adapting modulating-coding Download PDFInfo
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Abstract
The embodiment of the invention discloses the method and device of a kind of descending self-adapting modulating-coding, for dispatching downlink Modulation and Coding Scheme more accurately.The embodiment of the present invention includes: obtain the channel quality instruction of each terminal feedback in this community；Obtain the history schedule information of this neighbor cell, community record；According to history schedule information, channel quality instruction is classified according to the conflicting mode that neighbor cell is different；Calculate each two disturbance mode classification channel quality instruction offset each other；Obtain the conflicting mode of current each neighbor cell；Channel quality instruction is compensated, with dispatching downlink Modulation and Coding Scheme by channel quality instruction offset respectively that utilize the conflicting mode generic of current each neighbor cell corresponding.
Description
Technical field
The present invention relates to communication technical field, especially relate to a kind of descending self-adapting modulating-coding (AMC, Adaptive
Modulation and Coding) method and device.
Background technology
Generally, base station scheduling Corticofugal Modulation of Somatosensory encoding scheme (MCS, Modulation Coding Scheme), just
It is channel quality instruction (CQI, the Channel Quality fed back according to user terminal (UE, User Equipment)
Indicator) plus outer loop link self adaptation.
Normally, upstream detection pilot frequency, when dispatching uplink MCS, can be passed through (such as Long Term Evolution (LTE, Long in base station
Term Evolution) in sounding reference signal (SRS, Sounding reference signal)) estimate from
The uplink interference of each terminal.If base station is it is known that the schedule information of some adjacent areas, it is possible to reconstruct interference matrix, be used for
CQI estimates, but the method is only applicable to uplink scheduling, is not suitable for descending scheduling；At time division duplex (TDD, Time
Division Duplexing) in system, it is possible to use the up-downgoing reciprocity property of channel, by upstream detection pilot frequency (such as LTE
In SRS) estimate descending interference.If base station is it is known that the schedule information of some adjacent areas, it is possible to reconstruct interference
Matrix, estimates for CQI, but the method is only applicable to TDD system, is not suitable for FDD (FDD, Frequency
Division Duplexing) system；Both approaches is all limited to the expense of detecting pilot frequency, and is applicable to descending scheduling
Method is also limited to the port number of sending out of the ability of terminal, such as terminal and is likely less than receipts port number, then base station is mutual by channel
Easily just can only obtain partial channel knowledge.
Summary of the invention
Embodiments provide the method and device of a kind of descending self-adapting modulating-coding, for dispatching more accurately
Corticofugal Modulation of Somatosensory encoding scheme MCS.
In view of this, first aspect present invention provides a kind of method of descending self-adapting modulating-coding, wherein, it may include:
Obtain the channel quality indicator (CQI) of each terminal feedback in this community；
Obtain the history schedule information of this neighbor cell, community record；
According to described history schedule information, described CQI is classified according to the conflicting mode that neighbor cell is different；
Calculate each two disturbance mode classification CQI offset each other；
Obtain the conflicting mode of current each neighbor cell；
Described CQI is carried out by CQI offset respectively that utilize the conflicting mode generic of current each neighbor cell corresponding
Compensate, with dispatching downlink Modulation and Coding Scheme MCS.
In the first possible implementation of first aspect, the CQI bag of each terminal feedback in this community of described acquisition
Include and obtain the full band CQI or subband CQI of each terminal feedback in this community.
In conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, described acquisition
The history schedule information of this neighbor cell, community record includes the history schedule information obtaining X neighbor cell record, and described X is
Positive integer；
Then include according to the conflicting mode that neighbor cell the is different different classes of CQI obtained that carries out classifying: do not have adjacent little
The full band CQI or subband CQI of district's interference, less than or equal to the full band CQI or subband CQI of x neighbor cell interference, individual more than x
The full band CQI of neighbor cell interference or subband CQI, a full band portion Resource Block or sub-band portion Resource Block have one or
Multiple neighbor cell interference, part resource block does not has the CQI of neighbor cell interference, and wherein, described x is more than or equal to 1 and little
Integer in X.
In conjunction with the implementation that the second of first aspect is possible, in the implementation that the third is possible, if described in obtain
In Qu Zhe community, the CQI of each terminal feedback is to obtain the subband CQI of each terminal feedback in this community；
The history schedule information of this neighbor cell, community of described acquisition record includes obtaining the first neighbor cell and the second phase
The history schedule information of adjacent cell record；
Then include according to the conflicting mode that neighbor cell the is different different classes of CQI obtained that carries out classifying: do not have adjacent little
The subband CQI's of the subband CQI of district's interference, only described first neighbor cell interference, only described second neighbor cell interference
Subband CQI, there are described first neighbor cell and the subband CQI of described second neighbor cell interference, a sub-band portion money simultaneously
Source block has described first neighbor cell interference, and part resource block does not has the CQI of neighbor cell interference, a sub-band portion Resource Block
Having described second neighbor cell interference, part resource block does not has the CQI of neighbor cell interference.
In conjunction with the third possible implementation of first aspect, in the 4th kind of possible implementation, described calculating
Each two disturbance mode classification CQI offset each other includes:
It is directed to the CQI of each two disturbance mode classification, calculates two adjacent sub-bands, obtain at synchronization
CQI difference；Described CQI difference is filtered；Filtered CQI difference is defined as the disturbance side of two neighbor cells
Formula classification CQI offset each other.
In conjunction with the third possible implementation of first aspect, in the 5th kind of possible implementation, described calculating
Each two disturbance mode classification CQI offset each other includes:
Obtain the useful signal interference-to-noise ratio that terminal the n-th feedback cycle m-th subframe kth subband measurement obtains
ECINR is ECINRn,m,k, wherein, described n, m, k are positive integer；
Being M subframe according to feedback cycle, the quantization CQI of the kth subband obtaining terminal the n-th feedback cycle feedback is
CQIn,k, the corresponding ECINR before quantization is:Wherein, described M is positive integer；
By described ECINRn,m,kThe conflicting mode different according to described neighbor cell is classified, and obtains ECINRn,k,i, i=
1,2,3,4 ... x, wherein, described ECINRn,m,kClass categories number equal to the class categories number of described CQI, described x is
Positive integer；
According to the history schedule information of neighbor cell record, by described ECINRn,m,kCorrespond to described ECINRn,k,iOn,
ArriveWherein, dn,k,iFor positive integer, represent ECINRn,k,iNumber；
According to subband and the value of feedback cycle, list J equation equation group, obtain what jth equation equation group obtained
The ECINR of subband is ECINRn,j,i, described j is less than J, and described j, J are positive integer；
By ECINRn,j,iQuantify to CQI, obtain CQIn,j,iAnd the difference between COI of all categories；
Difference between the COI of all categories obtain described J equation equation group is done averagely respectively, obtains each two different
Conflicting mode classification CQI offset each other.
Second aspect present invention provides the device of a kind of descending self-adapting modulating-coding, wherein, it may include:
Acquisition module, for obtaining the channel quality indicator (CQI) of each terminal feedback in this community；
Described acquisition module, is additionally operable to obtain the history schedule information of this neighbor cell, community record；
Sort module, for according to described history schedule information, by described CQI according to the different conflicting mode in neighbor cell
Classify；
Computing module, calculates each two disturbance mode classification CQI offset each other；
Described acquisition module, is additionally operable to obtain the conflicting mode of current each neighbor cell；
Compensating module, for utilizing CQI offset that the conflicting mode generic of current each neighbor cell is corresponding to institute
State CQI to compensate respectively, with dispatching downlink Modulation and Coding Scheme MCS.
In the first possible implementation of second aspect, described acquisition module, it is used for obtaining in this community each end
The CQI of end feedback includes obtaining the full band CQI or subband CQI of each terminal feedback in this community.
In conjunction with the first possible implementation of second aspect, in the implementation that the second is possible, described acquisition
Module includes the history scheduling obtaining X neighbor cell record for the history schedule information obtaining this neighbor cell, community record
Information, described X is positive integer；
Then include according to the conflicting mode that neighbor cell the is different different classes of CQI obtained that carries out classifying: do not have adjacent little
The full band CQI or subband CQI of district's interference, less than or equal to the full band CQI or subband CQI of x neighbor cell interference, individual more than x
The full band CQI of neighbor cell interference or subband CQI, a full band portion Resource Block or sub-band portion Resource Block have one or
Multiple neighbor cell interference, part resource block does not has the CQI of neighbor cell interference, and wherein, described x is more than or equal to 1 and little
Integer in X.
In conjunction with the implementation that the second of second aspect is possible, in the implementation that the third is possible, if described in obtain
Delivery block is to obtain the subband CQI of each terminal feedback in this community for obtaining the CQI of each terminal feedback in this community；Described obtain
The history schedule information of neighbor cell, Qu Zhe community record includes obtaining going through of the first neighbor cell and the second neighbor cell record
History schedule information；
The most described sort module is for carrying out, according to the conflicting mode that neighbor cell is different, the different classes of CQI obtained that classifies
Including: there is no the subband CQI of the subband CQI of neighbor cell interference, only described first neighbor cell interference, only have described second
The subband CQI of neighbor cell interference, simultaneously have described first neighbor cell and the subband CQI of described second neighbor cell interference,
One sub-band portion Resource Block has described first neighbor cell interference, part resource block do not have the CQI of neighbor cell interference, one
Subband part resource block has described second neighbor cell interference, and part resource block does not has the CQI of neighbor cell interference.
In conjunction with the third possible implementation of second aspect, in the 4th kind of possible implementation, described calculating
Module is used for:
It is directed to the CQI of each two disturbance mode classification, calculates two adjacent sub-bands, obtain at synchronization
CQI difference；Described CQI difference is filtered；Filtered CQI difference is defined as the disturbance side of two neighbor cells
Formula classification CQI offset each other.
In conjunction with the third possible implementation of second aspect, in the 5th kind of possible implementation, described calculating
Module is used for:
Obtain the useful signal interference-to-noise ratio that terminal the n-th feedback cycle m-th subframe kth subband measurement obtains
ECINR is ECINRn,m,k, wherein, described n, m, k are positive integer；
Being M subframe according to feedback cycle, the quantization CQI of the kth subband obtaining terminal the n-th feedback cycle feedback is
CQIn,k, the corresponding ECINR before quantization is:Wherein, described M is positive integer；
By described ECINRn,m,kThe conflicting mode different according to described neighbor cell is classified, and obtains ECINRn,k,i, i=
1,2,3,4 ... x, wherein, described ECINRn,m,kClass categories number equal to the class categories number of described CQI, described x is
Positive integer；
According to the history schedule information of neighbor cell record, by described ECINRn,m,kCorrespond to described ECINRn,k,iOn,
ArriveWherein, dn,k,iFor positive integer, represent ECINRn,k,iNumber；
According to subband and the value of feedback cycle, list J equation equation group, obtain what jth equation equation group obtained
The ECINR of subband is ECINRn,j,i, described j is less than J, and described j, J are positive integer；
By ECINRn,j,iQuantify to CQI, obtain CQIn,j,iAnd the difference between COI of all categories；
Difference between the COI of all categories obtain described J equation equation group is done averagely respectively, obtains each two different
Conflicting mode classification CQI offset each other.
As can be seen from the above technical solutions, the method for a kind of descending self-adapting modulating-coding that the embodiment of the present invention provides
And device, have the advantage that the history schedule information of the record according to neighbor cell, by the CQI of terminal feedback according to difference
Conflicting mode is classified, and asks for disturbance mode classification CQI offset between any two；According to current each neighbor cell
Dispatch situation, compensates the CQI of terminal feedback, dispatches for descending MCS；In conjunction with neighbor cell history dispatching record and end
The CQI of end feedback, is predicted neighbor cell interference impact, it is possible to dispatching downlink MCS more accurately.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, embodiment will be described required use below
Accompanying drawing is briefly described, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention, for ability
From the point of view of the those of ordinary skill of territory, on the premise of not paying creative work, it is also possible to obtain the attached of other according to these accompanying drawings
Figure.
The schematic flow sheet of the method for a kind of descending self-adapting modulating-coding that Fig. 1 provides for the embodiment of the present invention；
Another schematic flow sheet of the method for the descending self-adapting modulating-coding that Fig. 2 provides for the embodiment of the present invention；
Another schematic flow sheet of the method for the descending self-adapting modulating-coding that Fig. 3 provides for the embodiment of the present invention；
The structural representation of the device of a kind of descending self-adapting modulating-coding that Fig. 4 provides for the embodiment of the present invention；
Another structural representation of the device of the descending self-adapting modulating-coding that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
Embodiments provide the method and device of a kind of descending self-adapting modulating-coding, for dispatching more accurately
Corticofugal Modulation of Somatosensory encoding scheme MCS.
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
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, those of ordinary skill in the art obtained under not making creative work premise all other
Embodiment, broadly falls into the scope of protection of the invention.
It is described in detail individually below.
The flow process of the method that refer to a kind of descending self-adapting modulating-coding that Fig. 1, Fig. 1 provide for the embodiment of the present invention is shown
Being intended to, wherein, described method includes:
Step 101, obtain the channel quality indicator (CQI) of each terminal feedback in this community；
It is understood that the executive agent of this method embodiment can be a kind of communicator, this communicator is permissible
Being base station, described base station includes several communities, for some community, can be described as this community or main little in the present embodiment
District, the community of same base station or other base station can be described as this neighbor cell, community and (is called for short neighbor cell or neighbour in the present embodiment
District)；The method of the most described descending self-adapting modulating-coding may be considered and processed by main plot base station side.
It addition, in this community obtains the channel quality indicator (CQI) of terminal feedback, described terminal can be main plot service
Each terminal.Described channel quality indicator (CQI) can be full band CQI, it is also possible to for subband CQI, the most specifically limit.
Step 102, obtain this neighbor cell, community record history schedule information；
It is understood that described history schedule information can be the neighbor cell record of same base, it is also possible to be
The neighbor cell record of different base station, it is not construed as limiting herein；Wherein, the history schedule information of described record may refer to history
The resource scheduling information of record, ratio is such as whether scheduled certain Resource Block, or the transmitting power etc. during this resource block scheduling
Deng.
Step 103, according to described history schedule information, described CQI is carried out according to the conflicting mode that neighbor cell is different
Classification；
Further, the history schedule information obtaining this neighbor cell, community record can include obtaining X neighbor cell
The history schedule information of record, described X is positive integer；Then carry out classifying obtaining not according to the conflicting mode that neighbor cell is different
Generic CQI may include that
There is no the full band CQI or subband CQI of neighbor cell interference, less than or equal to the full band CQI of x neighbor cell interference
Or subband CQI, the full band CQI or subband CQI more than x neighbor cell interference, a full band portion Resource Block or a subband
Part resource block has one or more neighbor cell interference, part resource block not to have the CQI of neighbor cell interference, wherein, described x
For more than or equal to 1, and the integer less than X.
Step 104, calculating each two disturbance mode classification CQI offset each other；
It is understood that owing to the scheduling meeting of neighbor cell affects the value of CQI feedback, therefore going through according to neighbor cell
History schedule information, carries out classifying and calculate CQI between any two of all categories by CQI according to the conflicting mode that neighbor cell is different and mends
Repay value, scheduling MCS can be made more accurate.
Step 105, obtain the conflicting mode of current each neighbor cell；
Step 106, utilize CQI offset that the conflicting mode generic of current each neighbor cell is corresponding to described CQI
Compensate respectively, with dispatching downlink Modulation and Coding Scheme MCS.
Corresponding CQI offset is utilized described CQI to be compensated respectively, to overcome the interference of neighbor cell and to transfer
Impact on the CQI of feedback.
From the foregoing, the method for a kind of descending self-adapting modulating-coding of embodiment of the present invention offer, according to adjacent little
The history schedule information of the record in district, classifies the CQI of terminal feedback according to disturbance mode, and asks for disturbance
Mode classification CQI offset between any two；According to the dispatch situation of current each neighbor cell, the CQI of terminal feedback is mended
Repay, dispatch for descending MCS；In conjunction with neighbor cell history dispatching record and the CQI of terminal feedback, neighbor cell interference is affected
It is predicted, it is possible to dispatching downlink MCS more accurately.
Another flow process of the method that refer to the descending self-adapting modulating-coding that Fig. 2, Fig. 2 provide for the embodiment of the present invention is shown
Being intended to, identical with a upper embodiment, described method executive agent can be a kind of communicator, and this communicator can be base
Stand；In this embodiment of the invention, described method is processed by main plot base station side, and with LTE system (include LTE TDD and
LTE FDD) as a example by described method is illustrated: assume that main plot obtains the history schedule information of two neighbor cells record
(the most described X is 2), said two neighbor cell includes the first neighbor cell and the second neighbor cell.Described method includes:
Step 201, obtain the subband CQI of each terminal feedback in this community；
Step 202, obtain the first neighbor cell and the second neighbor cell record history schedule information；
Step 203, according to described history schedule information, by described subband CQI according to the different conflicting mode in neighbor cell
Classify；
I.e. combine the schedule information of neighbor cell, the subband CQI of terminal feedback is classified；It is understood that institute
The schedule information stating neighbor cell can include the conflicting mode that neighbor cell is different.
In the present embodiment, after the subband CQI of feedback classifies according to the conflicting mode that neighbor cell is different, thus
To different classes of CQI may include that
(1) there is no the subband CQI of neighbor cell interference；I.e. subband CQI had not both had the first neighbor cell and second adjacent little
District disturbs, and does not also have other neighbor cell interference；In this embodiment, there is no the CQI of kth subband during neighbor cell interference, use
CQI (k) _ 00 represents, wherein k is positive integer, represents index, as gone from 0 or 1 positive integer started；
(2) the subband CQI of described first neighbor cell interference is only had；In this embodiment, the most described first neighbor cell
The CQI of kth subband during interference, represents with CQI (k) _ 10；
(3) the subband CQI of described second neighbor cell interference is only had；In this embodiment, the most described second neighbor cell
The CQI of kth subband during interference, represents with CQI (k) _ 01；
(4) there are described first neighbor cell and the subband CQI of described second neighbor cell interference simultaneously；In this embodiment,
The CQI of kth subband when simultaneously having described first neighbor cell and described second neighbor cell interference, represents with CQI (k) _ 11；
It addition, in the present embodiment, CQI is further divided into a sub-band portion Resource Block (RB, resource block) to be had
Neighbor cell interference, the situation that part does not interferes with, can be specifically divided into for this classification:
(5) sub-band portion Resource Block have described first neighbor cell interference, and part resource block does not has neighbor cell to do
The CQI disturbed, represents with CQI (k) _ half_10；
(6) sub-band portion Resource Block have described second neighbor cell interference, and part resource block does not has neighbor cell to do
The CQI disturbed, represents with CQI (k) _ half_01.
As a example by LTE20M, resource one Resource Block group (RBG, Resource block group) of distribution is 4 RB, son
Band CQI feedback granularity is 8RB, and can be divided into two classes, a class is the interference that 4RB 4RB noiseless, another has the first neighbor cell, another
Class is the interference that 4RB 4RB noiseless, another has the second neighbor cell.
Step 204, calculating each two disturbance mode classification CQI offset each other；
In the embodiment of the present invention, described step 204 can specifically include:
S2041, it is directed to the CQI of each two disturbance mode classification, calculates two adjacent sub-bands, obtain at synchronization
The CQI difference arrived；
S2042, described CQI difference is filtered；
S2043, filtered CQI difference is defined as the disturbance mode classification of two neighbor cells each other
CQI offset.
Understand for convenience, below asking for the CQI offset between the first kind (i.e. (1)) and the 4th class (i.e. (4))
As a example by, that explains CQI offset asks for step:
Assume that two adjacent subbands are respectively k and k+1, the CQI difference obtained in the n moment can be expressed as Delta (n,
K)=CQI (k, n) _ 00-CQI (k+1, n) _ 11, wherein, described n is positive integer；Secondly, to CQI difference Delta, (n k) is carried out
Filtering (can be above and on different sub-band to be filtered it time), obtains Delta_00_11；Finally, by Delta_00_11
It is defined as two neighbor cells and all dispatches CQI offset when not dispatching with two neighbor cells.
Step 205, obtain the conflicting mode of current each neighbor cell；
Step 206, utilize CQI offset that the conflicting mode generic of current each neighbor cell is corresponding to described CQI
Compensate respectively, with dispatching downlink Modulation and Coding Scheme MCS.
Such as, if the CQI of terminal feedback kth subband is CQI (k) _ 11, it is categorized as the 4th class that step 203 describes, with
Time have described first neighbor cell and the subband CQI of described second neighbor cell interference；Further, get is current each adjacent little
The conflicting mode in district is the interference being engraved on kth subband not same adjacent area of standing during current scheduling, i.e. belongs to what step 203 described
The first kind, then the CQI offset that the category is corresponding is Delta_00_11, and CQI (k) _ 11 of terminal feedback compensate upper Delta_
00_11, dispatches for the descending MCS of current time.
From the foregoing, the method for a kind of descending self-adapting modulating-coding of embodiment of the present invention offer, according to adjacent little
The history schedule information of the record in district, classifies the CQI of terminal feedback according to disturbance mode, and asks for disturbance
Mode classification CQI offset between any two；According to the dispatch situation of current each neighbor cell, the CQI of terminal feedback is mended
Repay, dispatch for descending MCS；In conjunction with neighbor cell history dispatching record and the CQI of terminal feedback, neighbor cell interference is affected
It is predicted, it is possible to dispatching downlink MCS more accurately.
Another flow process of the method that refer to the descending self-adapting modulating-coding that Fig. 3, Fig. 3 provide for the embodiment of the present invention is shown
It is intended to；Identical with a upper embodiment, described method can be processed by main plot base station side, (includes LTE with LTE system
TDD and LTE FDD) as a example by, it is assumed that main plot obtains the history schedule information (the most described X is 2) of two neighbor cell records,
Said two neighbor cell includes the first neighbor cell and the second neighbor cell.Being different from an embodiment, the present embodiment calculates
During each two disturbance mode classification CQI offset each other, it is not necessary to the cooperation of base station scheduling, but logical
Cross the mode solved equation and obtain CQI offset.Described method includes:
Step 301, obtain the subband CQI of each terminal feedback in this community；
Step 302, obtain the first neighbor cell and the second neighbor cell record history schedule information；
Step 303, according to described history schedule information, by described subband CQI according to the different conflicting mode in neighbor cell
Classify；
It is understood that described subband CQI can be divided into six classes, this enforcement according to the mode classification in a upper embodiment
In example, step 301 to the detailed process of step 303 refers to step 201 in a upper embodiment to the content of step 203 and carries out
Implement, be the most no longer specifically described.
Step 304, calculating each two disturbance mode classification CQI offset each other；
In the embodiment of the present invention, described step 304 can specifically include:
The useful signal interference that S3041, acquisition terminal the n-th feedback cycle m-th subframe kth subband measurement obtain is made an uproar
Acoustic ratio (ECINR, Effective CINR) is ECINRn,m,k, wherein, described n, m, k are positive integer, represent index, the most permissible
Take from 0 or 1 positive integer started；
S3042, it is M subframe according to feedback cycle, obtains the amount of the kth subband of terminal the n-th feedback cycle feedback
Change CQI is CQIn,k, the corresponding ECINR before quantization is:
Wherein, described M is positive integer；
It is understood that the ECINR before described quantization is to obtain the ECINR in M subframe as mean value calculation.
S3043, by described ECINRn,m,kThe conflicting mode different according to described neighbor cell is classified, and obtains
ECINRn,k,i, i=1,2,3,4 ... x, wherein, described ECINRn,m,kClass categories number equal to the class categories of described CQI
Number, described x is positive integer；
It is to say, by described ECINRn,m,kIt is divided into six big classes according to the mode of a upper embodiment classification CQI；The most described x
It is 6, available ECINRn,k,i, i=1,2,3,4,5,6 represent.
S3044, the history schedule information recorded according to neighbor cell, by described ECINRn,m,kCorrespond to described
ECINRn,k,iOn, obtainWherein, dn,k,iFor
Positive integer, represents ECINRn,k,iNumber；
Assume in a feedback cycle that channel is gradual (or to be considered as ECINRn,m,kThe most also can do), according to adjacent little with station
The history schedule information of district's record, by ECINRn,m,kCorrespond to ECINRn,k,iOn, if total dn,k,iIndividual ECINRn,k,i, then obtained by formula one
To formula two, if x is equal to 6, substituting into formula two can obtain:
S3045, value according to subband and feedback cycle, list J equation equation group, obtain jth equation equation group
The ECINR of the subband obtained is ECINRn,j,i, described j is less than J, and described j, J are positive integer；
Such as: if for formula three, ECINRn,k、dn,k,iIt is it is known that to solve ECINR with Mn,j,i, then row are needed
Go out more than six different equations can solve.Owing to a subband CQI of feedback in a feedback cycle can one side of row
Journey (formula two), then 2 feedback cycles of 3 subband * represent adjacent two feedback cycles, 6 subband COI of 3 subbands can
To list the equation of 6 similar formula two；If assuming the ECINR of 2 feedback cycles of adjacent 3 subband *n,k,iApproximately equal,
List equation equation group；If it is equal to encounter listed two equation equation group, two formula the right and lefts are just made averagely by respectively
Obtain an equation, i.e. need again new one subband of row or the equation of feedback cycle, reach unknown number and equation is equal asks
Solve unknown number.Such a equation equation group is collectively referred to as jth equation equation group, son jth equation equation group obtained
The ECINR of band is expressed as ECINRn,j,i。
S3046, by ECINRn,j,iQuantify to CQI, obtain CQIn,j,iAnd the difference between COI of all categories；
Difference between S3047, the COI of all categories described J equation equation group obtained is done averagely respectively, obtains every two
Individual disturbance mode classification CQI offset each other.
Step 305, obtain the conflicting mode of current each neighbor cell；
Step 306, utilize CQI offset that the conflicting mode generic of current each neighbor cell is corresponding to described CQI
Compensate respectively, with dispatching downlink Modulation and Coding Scheme MCS.
It is understood that step 305 refers in a upper embodiment to the detailed process of step 306 in the present embodiment
Step 205 implements to the content of step 206, is the most no longer specifically described.
From the foregoing, the method for a kind of descending self-adapting modulating-coding of embodiment of the present invention offer, according to adjacent little
The history schedule information of the record in district, classifies the CQI of terminal feedback according to disturbance mode, and asks for disturbance
Mode classification CQI offset between any two；According to the dispatch situation of current each neighbor cell, the CQI of terminal feedback is mended
Repay, dispatch for descending MCS；In conjunction with neighbor cell history dispatching record and the CQI of terminal feedback, neighbor cell interference is affected
It is predicted, it is possible to dispatching downlink MCS more accurately.
For ease of the method preferably implementing the descending self-adapting modulating-coding that the embodiment of the present invention provides, the present invention implements
Example also provides for a kind of descending self-adapting modulating-coding device based on said method.Wherein the implication of noun is implemented with said method
In example identical, implement the explanation that details is referred in embodiment of the method.
The structure of the device that refer to a kind of descending self-adapting modulating-coding that Fig. 4, Fig. 4 provide for the embodiment of the present invention is shown
Being intended to, wherein, described device can be base station, and described device may include that acquisition module 401, sort module 402, calculates mould
Block 403, compensating module 404；
Wherein, described acquisition module 401, for obtaining the channel quality indicator (CQI) of each terminal feedback in this community；
It is understood that in this community obtains the channel quality indicator (CQI) of terminal feedback, described terminal can be main
Each terminal of cell serves.
Described acquisition module 401, is additionally operable to obtain the history schedule information of this neighbor cell, community record；
In present embodiment, described history schedule information can be the neighbor cell record of same base, it is also possible to be
The neighbor cell record of different base station, it is not construed as limiting herein；Wherein, the history schedule information of described record may refer to history
The resource scheduling information of record, ratio is such as whether scheduled certain Resource Block, or the transmitting power etc. during this resource block scheduling
Deng.
Described sort module 402 is for according to described history schedule information, different according to neighbor cell by described CQI
Conflicting mode is classified；
Further, described acquisition module 401 obtain this neighbor cell, community record history schedule information can include
Obtaining the history schedule information of X neighbor cell record, described X is positive integer；Then sort module 402 is different according to neighbor cell
The conflicting mode different classes of CQI obtained that carries out classifying may include that full band CQI or the subband not having neighbor cell interference
CQI, the full band CQI or subband CQI less than or equal to x neighbor cell interference, the full band CQI more than x neighbor cell interference
Or subband CQI, a full band portion Resource Block or a sub-band portion Resource Block have one or more neighbor cell interference, part
Resource Block does not has the CQI of neighbor cell interference, and wherein, described x is more than or equal to 1, and the integer less than X.
Described computing module 403, calculates each two disturbance mode classification CQI offset each other；
It is understood that owing to the scheduling meeting of neighbor cell affects the value of CQI feedback, therefore going through according to neighbor cell
History schedule information, carries out classifying and calculate CQI between any two of all categories by CQI according to the conflicting mode that neighbor cell is different and mends
Repay value, scheduling MCS can be made more accurate.
Described acquisition module 401, is additionally operable to obtain the conflicting mode of current each neighbor cell；
Described compensating module 404, for utilizing the CQI that the conflicting mode generic of current each neighbor cell is corresponding to compensate
Described CQI is compensated by value respectively, with dispatching downlink Modulation and Coding Scheme MCS.
Corresponding CQI offset is utilized described CQI to be compensated respectively, to overcome the interference of neighbor cell and to transfer
Impact on the CQI of feedback.
From the foregoing, the device of a kind of descending self-adapting modulating-coding of embodiment of the present invention offer, according to adjacent little
The history schedule information of the record in district, classifies the CQI of terminal feedback according to disturbance mode, and asks for disturbance
Mode classification CQI offset between any two；According to the dispatch situation of current each neighbor cell, the CQI of terminal feedback is mended
Repay, dispatch for descending MCS；In conjunction with neighbor cell history dispatching record and the CQI of terminal feedback, neighbor cell interference is affected
It is predicted, it is possible to dispatching downlink MCS more accurately.
Alternatively, described acquisition module 401, include obtaining this community for obtaining the CQI of each terminal feedback in this community
In the full band CQI or subband CQI of each terminal feedback；
Still optionally further, if described acquisition module 401 is to obtain this for obtaining the CQI of each terminal feedback in this community
The subband CQI of each terminal feedback in community；The history schedule information of this neighbor cell, community of described acquisition record includes obtaining the
One neighbor cell and the history schedule information of the second neighbor cell record；
It is different classes of that the most described sort module 402 obtains for carrying out classifying according to the conflicting mode that neighbor cell is different
CQI includes: the subband CQI, the subband CQI only having described first neighbor cell interference that there is no neighbor cell interference, only have described
The subband CQI of the second neighbor cell interference, there are described first neighbor cell and a subband of described second neighbor cell interference simultaneously
CQI, a sub-band portion Resource Block have described first neighbor cell interference, part resource block do not have neighbor cell interference CQI,
One sub-band portion Resource Block has described second neighbor cell interference, and part resource block does not has the CQI of neighbor cell interference.
Wherein, this six class subband CQI can represent respectively: does not has the CQI of kth subband during neighbor cell interference, uses CQI
K () _ 00 represents, wherein k is positive integer, represents index, as gone from 0 or 1 positive integer started；Only have the most described first adjacent
The CQI of kth subband during area interference, represents with CQI (k) _ 10；Kth subband when only having described second neighbor cell interference
CQI, with CQI (k) _ 01 represent；Kth subband when simultaneously having described first neighbor cell and described second neighbor cell interference
CQI, with CQI (k) _ 11 represent；One sub-band portion Resource Block has described first neighbor cell interference, and part resource block does not has
The CQI of neighbor cell interference, represents with CQI (k) _ half_10；One sub-band portion Resource Block has described second neighbor cell to do
Disturbing, part resource block does not has the CQI of neighbor cell interference, represents with CQI (k) _ half_01.
In one embodiment, based on the described sort module 402 classification results to subband CQI, described computing module
403 can be specifically for:
It is directed to the CQI of each two disturbance mode classification, calculates two adjacent sub-bands, obtain at synchronization
CQI difference；Described CQI difference is filtered；Filtered CQI difference is defined as the disturbance side of two neighbor cells
Formula classification CQI offset each other.
Understand for convenience, below asking for the CQI offset between the first kind (i.e. (1)) and the 4th class (i.e. (4))
As a example by, that explains CQI offset asks for step:
Assume that two adjacent subbands are respectively k and k+1, the CQI difference obtained in the n moment can be expressed as Delta (n,
K)=CQI (k, n) _ 00-CQI (k+1, n) _ 11, wherein, described n is positive integer；Secondly, to CQI difference Delta, (n k) is carried out
Filtering (can be above and on different sub-band to be filtered it time), obtains Delta_00_11；Finally, by Delta_00_11
It is defined as two neighbor cells and all dispatches CQI offset when not dispatching with two neighbor cells.
In this embodiment, if the CQI of terminal feedback kth subband is CQI (k) _ 11, it is categorized as the of foregoing description
Four classes, have described first neighbor cell and the subband CQI of described second neighbor cell interference simultaneously；Further, get is current
The conflicting mode of each neighbor cell is the interference being engraved on kth subband not same adjacent area of standing during current scheduling, i.e. belongs to above-mentioned
The first kind described, then the CQI offset that the category is corresponding is Delta_00_11, and the most described compensating module 404 is for by terminal
CQI (k) _ 11 of feedback compensate upper Delta_00_11, dispatch for the descending MCS of current time.
In another embodiment, based on the described sort module 402 classification results to subband CQI, described calculating mould
Block 403 can be specifically for:
Obtain the useful signal interference-to-noise ratio that terminal the n-th feedback cycle m-th subframe kth subband measurement obtains
ECINR is ECINRn,m,k, wherein, described n, m, k are positive integer, represent index, such as, can take from 0 or 1 positive integer started；
Being M subframe according to feedback cycle, the quantization CQI of the kth subband obtaining terminal the n-th feedback cycle feedback is
CQIn,k, the corresponding ECINR before quantization is:(hereinafter referred to as formula one), wherein, institute
Stating M is positive integer；It is understood that the ECINR before described quantization is to obtain the ECINR in M subframe as mean value calculation
Arrive.
By described ECINRn,m,kThe conflicting mode different according to described neighbor cell is classified, and obtains ECINRn,k,i, i=
1,2,3,4 ... x, wherein, described ECINRn,m,kClass categories number equal to the class categories number of described CQI, described x is
Positive integer；It is to say, by described ECINRn,m,kIt is divided into six big classes according to the mode of a upper embodiment classification CQI；The most described x is
6, available ECINRn,k,i, i=1,2,3,4,5,6 represent.
According to the history schedule information of neighbor cell record, by described ECINRn,m,kCorrespond to described ECINRn,k,iOn,
ArriveWherein, dn,k,iFor positive integer, represent
ECINRn,k,iNumber；
Assume in a feedback cycle that channel is gradual (or to be considered as ECINRn,m,kThe most also can do), according to adjacent little with station
The history schedule information of district's record, by ECINRn,m,kCorrespond to ECINRn,k,iOn, if total dn,k,iIndividual ECINRn,k,i, then obtained by formula one
To formula two, if x is equal to 6, substituting into formula two can obtain:
According to subband and the value of feedback cycle, list J equation equation group, obtain what jth equation equation group obtained
The ECINR of subband is ECINRn,j,i, described j is less than J, and described j, J are positive integer；
Such as: if for formula three, ECINRn,k、dn,k,iIt is it is known that to solve ECINR with Mn,j,i, then row are needed
Go out more than six different equations can solve.Owing to a subband CQI of feedback in a feedback cycle can one side of row
Journey (formula two), then 2 feedback cycles of 3 subband * represent adjacent two feedback cycles, 6 subband COI of 3 subbands can
To list the equation of 6 similar formula two；If assuming the ECINR of 2 feedback cycles of adjacent 3 subband *n,k,iApproximately equal,
List equation equation group；If it is equal to encounter listed two equation equation group, two formula the right and lefts are just made averagely by respectively
Obtain an equation, i.e. need again new one subband of row or the equation of feedback cycle, reach unknown number and equation is equal asks
Solve unknown number.Such a equation equation group is collectively referred to as jth equation equation group, son jth equation equation group obtained
The ECINR of band is expressed as ECINRn,j,i。
By ECINRn,j,iQuantify to CQI, obtain CQIn,j,iAnd the difference between COI of all categories；
Difference between the COI of all categories obtain described J equation equation group is done averagely respectively, obtains each two different
Conflicting mode classification CQI offset each other.
Now, described compensating module 404 utilizes the CQI that the conflicting mode generic of current each neighbor cell is corresponding to compensate
Described CQI is compensated by value respectively, with dispatching downlink Modulation and Coding Scheme MCS.Utilize corresponding CQI offset to described
CQI compensates respectively, to overcome the interference of neighbor cell and to transfer the impact on the CQI fed back.The present embodiment calculates every
During two disturbance mode classifications CQI offset each other, it is not necessary to the cooperation of base station scheduling, but pass through
The mode solved equation obtains CQI offset, easier.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, and the device of foregoing description
With the specific works process of each modular unit in device, it is referred to the corresponding process in preceding method embodiment, at this not
Repeat again.
From the foregoing, the device of a kind of descending self-adapting modulating-coding of embodiment of the present invention offer, according to adjacent little
The history schedule information of the record in district, classifies the CQI of terminal feedback according to disturbance mode, and asks for disturbance
Mode classification CQI offset between any two；According to the dispatch situation of current each neighbor cell, the CQI of terminal feedback is mended
Repay, dispatch for descending MCS；In conjunction with neighbor cell history dispatching record and the CQI of terminal feedback, neighbor cell interference is affected
It is predicted, it is possible to dispatching downlink MCS more accurately.
Refer to another structural representation of device of the descending self-adapting modulating-coding that Fig. 5, Fig. 5 provide for the embodiment of the present invention
Figure, wherein, it may include at least one processor 501(such as CPU, Central Processing Unit), at least one network
Interface or other communication interface, memorizer 502, and at least one communication bus, for realizing the connection between these devices
Communication.Described processor 501 is for performing the executable module of storage, such as computer program in memorizer.Described memorizer
502 may comprise high-speed random access memory (RAM, Random Access Memory), it is also possible to also include non-instability
Memorizer (non-volatile memory), for example, at least one disk memory.(can by least one network interface
Being wired or wireless) realize the communication connection between this system gateway and at least one other network element, it is possible to use interconnection
Net, wide area network, LAN, Metropolitan Area Network (MAN) etc..
As it is shown in figure 5, in some embodiments, storing programmed instruction in described memorizer 502, programmed instruction is permissible
Being performed by processor 501, described processor 501 specifically performs following steps:
Obtain the channel quality indicator (CQI) of each terminal feedback in this community；Obtain the history of this neighbor cell, community record
Schedule information；According to described history schedule information, described CQI is classified according to the conflicting mode that neighbor cell is different；Meter
Calculate each two disturbance mode classification CQI offset each other；Obtain the conflicting mode of current each neighbor cell；Utilize
Described CQI is compensated by CQI offset that the conflicting mode generic of current each neighbor cell is corresponding respectively, with under scheduling
Row Modulation and Coding Scheme MCS.
Wherein, obtain the CQI of each terminal feedback in this community include obtaining each terminal feedback in this community full band CQI or
Subband CQI.
Preferably, described processor 501 obtain this neighbor cell, community record history schedule information can include obtain X
The history schedule information of individual neighbor cell record, described X is positive integer；Then carry out point according to the conflicting mode that neighbor cell is different
The different classes of CQI that class obtains includes: do not have the full band CQI or subband CQI of neighbor cell interference, adjacent less than or equal to x
The full band CQI of area interference or subband CQI, more than the full band CQI or subband CQI of x neighbor cell interference, a full band portion
Resource Block or a sub-band portion Resource Block have one or more neighbor cell interference, part resource block not to have neighbor cell interference
CQI, wherein, described x is more than or equal to 1, and less than the integer of X.
If it is further preferred that it is to obtain in this community that described processor 501 obtains the CQI of each terminal feedback in this community
The subband CQI of each terminal feedback；It is adjacent that the history schedule information of this neighbor cell, community of described acquisition record includes obtaining first
Community and the history schedule information of the second neighbor cell record；Then carry out classification according to the conflicting mode that neighbor cell is different to obtain
Different classes of CQI include: do not have neighbor cell interference subband CQI, only have described first neighbor cell interference subband
CQI, only have the subband CQI of described second neighbor cell interference, have described first neighbor cell and described second adjacent little simultaneously
The subband CQI of district's interference, a sub-band portion Resource Block have described first neighbor cell interference, and part resource block does not has adjacent little
The CQI of district's interference, a sub-band portion Resource Block have described second neighbor cell interference, and part resource block does not has neighbor cell to do
The CQI disturbed.
In one embodiment, described processor 501 calculates each two disturbance mode classification CQI each other
Offset may include that the CQI being directed to each two disturbance mode classification, calculates two adjacent sub-bands, at synchronization
The CQI difference obtained；Described CQI difference is filtered；Filtered CQI difference is defined as the difference of two neighbor cells
Conflicting mode classification CQI offset each other.
In another embodiment, described processor 501 calculates each two disturbance mode classification each other
CQI offset may include that the useful signal that acquisition terminal the n-th feedback cycle m-th subframe kth subband measurement obtains is done
Disturbing noise ratio ECINR is ECINRn,m,k, wherein, described n, m, k are positive integer；It is M subframe according to feedback cycle, obtains terminal
The quantization CQI of the kth subband of the n-th feedback cycle feedback is CQIn,k, the corresponding ECINR before quantization is:Wherein, described M is positive integer；By described ECINRn,m,kAccording to described neighbor cell not
Same conflicting mode is classified, and obtains ECINRn,k,i, i=1,2,3,4 ... x, wherein, described ECINRn,m,kClass categories
The number class categories number equal to described CQI, described x is positive integer；According to the history schedule information of neighbor cell record, will
Described ECINRn,m,kCorrespond to described ECINRn,k,iOn, obtainWherein, dn,k,i
For positive integer, represent ECINRn,k,iNumber；According to subband and the value of feedback cycle, list J equation equation group, obtain
The ECINR of the subband that j equation equation group obtains is ECINRn,j,i, described j is less than J, and described j, J are positive integer；Will
ECINRn,j,iQuantify to CQI, obtain CQIn,j,iAnd the difference between COI of all categories；Described J equation equation group is obtained
Difference between COI of all categories is done averagely respectively, obtains each two disturbance mode classification CQI offset each other.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, and the device of foregoing description
The specific works process of middle processor 501, is referred to the corresponding process in preceding method embodiment, does not repeats them here.
From the foregoing, the device of a kind of descending self-adapting modulating-coding of embodiment of the present invention offer, according to adjacent little
The history schedule information of the record in district, classifies the CQI of terminal feedback according to disturbance mode, and asks for disturbance
Mode classification CQI offset between any two；According to the dispatch situation of current each neighbor cell, the CQI of terminal feedback is mended
Repay, dispatch for descending MCS；In conjunction with neighbor cell history dispatching record and the CQI of terminal feedback, neighbor cell interference is affected
It is predicted, it is possible to dispatching downlink MCS more accurately.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, and the system of foregoing description,
The specific works process of device and unit, is referred to the corresponding process in preceding method embodiment, does not repeats them here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method are permissible
Realize by another way.Such as, device embodiment described above is only schematically, such as, and described unit
Dividing, be only a kind of logic function and divide, actual can have other dividing mode, the most multiple unit or assembly when realizing
Can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not performs.Another point, shown or
The coupling each other discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit
Close or communication connection, can be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, shows as unit
The parts shown can be or may not be physical location, i.e. may be located at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected according to the actual needs to realize the mesh of the present embodiment scheme
's.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.Above-mentioned integrated list
Unit both can realize to use the form of hardware, it would however also be possible to employ the form of SFU software functional unit realizes.
If described integrated unit realizes and as independent production marketing or use using the form of SFU software functional unit
Time, can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part that in other words prior art contributed or this technical scheme completely or partially can be with the form of software product
Embodying, this computer software product is stored in a storage medium, including some instructions with so that a computer
Equipment (can be personal computer, server, or the network equipment etc.) performs the complete of method described in each embodiment of the present invention
Portion or part steps.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
Above the method and device of a kind of descending self-adapting modulating-coding provided by the present invention is described in detail,
For one of ordinary skill in the art, according to the thought of the embodiment of the present invention, the most all
Will change, in sum, this specification content should not be construed as limitation of the present invention.
Claims (12)
1. the method for a descending self-adapting modulating-coding, it is characterised in that including:
Obtain the channel quality indicator (CQI) of each terminal feedback in this community；
Obtain the history schedule information of this neighbor cell, community record；The money that history schedule information is historical record of described record
Source schedule information；
According to described history schedule information, described CQI is classified according to the conflicting mode that neighbor cell is different；
Calculate each two disturbance mode classification CQI offset each other；
Obtain the conflicting mode of current scheduling moment each neighbor cell；
Described CQI is compensated by CQI offset respectively that utilize the conflicting mode generic of current each neighbor cell corresponding,
Corticofugal Modulation of Somatosensory encoding scheme MCS for the current scheduling moment is dispatched.
Method the most according to claim 1, it is characterised in that in this community of described acquisition, the CQI of each terminal feedback includes
Obtain the full band CQI or subband CQI of each terminal feedback in this community.
Method the most according to claim 2, it is characterised in that the history scheduling of this neighbor cell, community of described acquisition record
Information includes the history schedule information obtaining X neighbor cell record, and described X is positive integer；
Then include according to the conflicting mode that neighbor cell the is different different classes of CQI obtained that carries out classifying: do not have neighbor cell to do
The full band CQI disturbed or subband CQI, less than or equal to the full band CQI of x neighbor cell interference or subband CQI, adjacent more than x
The full band CQI of area interference or subband CQI, a full band portion Resource Block or a sub-band portion Resource Block have one or more
Neighbor cell interference, part resource block does not has the CQI of neighbor cell interference, and wherein, described x is more than or equal to 1, and less than X
Integer.
Method the most according to claim 3, it is characterised in that if the CQI of each terminal feedback is in this community of described acquisition
Obtain the subband CQI of each terminal feedback in this community；
The history schedule information of this neighbor cell, community of described acquisition record includes obtaining the first neighbor cell and second adjacent little
The history schedule information of district's record；
Then include according to the conflicting mode that neighbor cell the is different different classes of CQI obtained that carries out classifying: do not have neighbor cell to do
The subband CQI disturbed, the subband of the subband CQI only having described first neighbor cell interference, only described second neighbor cell interference
CQI, there are described first neighbor cell and the subband CQI of described second neighbor cell interference, a sub-band portion Resource Block simultaneously
Having described first neighbor cell interference, part resource block has not had the CQI of neighbor cell interference, a sub-band portion Resource Block
Stating the second neighbor cell interference, part resource block does not has the CQI of neighbor cell interference.
Method the most according to claim 4, it is characterised in that described calculating each two disturbance mode classification mutually it
Between CQI offset include:
Being directed to the CQI of each two disturbance mode classification, calculate two adjacent sub-bands, the CQI obtained at synchronization is poor
Value；
Described CQI difference is filtered；
Filtered CQI difference is defined as the disturbance mode classification of two neighbor cells CQI offset each other.
Method the most according to claim 4, it is characterised in that described calculating each two disturbance mode classification mutually it
Between CQI offset include:
Obtain useful signal interference-to-noise ratio ECINR that terminal the n-th feedback cycle m-th subframe kth subband measurement obtains
For ECINRn,m,k, wherein, described n, m, k are positive integer；
Being M subframe according to feedback cycle, the quantization CQI of the kth subband obtaining terminal the n-th feedback cycle feedback is
CQIn,k, the corresponding ECINR before quantization is:Wherein, described M is positive integer；
By described ECINRn,m,kThe conflicting mode different according to described neighbor cell is classified, and obtains ECINRn,k,i, i=1,2,
3,4 ... x, wherein, described ECINRn,m,kClass categories number equal to the class categories number of described CQI, described x is the most whole
Number；
According to the history schedule information of neighbor cell record, by described ECINRn,m,kCorrespond to described ECINRn,k,iOn, obtainWherein, dn,k,iFor positive integer, represent ECINRn,k,iNumber；
According to subband and the value of feedback cycle, list J equation equation group, obtain the subband that jth equation equation group obtains
ECINR be ECINRn,j,i, described j is less than J, and described j, J are positive integer；
By ECINRn,j,iQuantify to CQI, obtain CQIn,j,iAnd the difference between COI of all categories；
Difference between the COI of all categories obtain described J equation equation group is done averagely respectively, obtains each two disturbance
Mode classification CQI offset each other.
7. the device of a descending self-adapting modulating-coding, it is characterised in that including:
Acquisition module, for obtaining the channel quality indicator (CQI) of each terminal feedback in this community；
Described acquisition module, is additionally operable to obtain the history schedule information of this neighbor cell, community record；The history of described record is adjusted
Degree information is the resource scheduling information of historical record；
Sort module, for according to described history schedule information, is carried out described CQI according to the conflicting mode that neighbor cell is different
Classification；
Computing module, calculates each two disturbance mode classification CQI offset each other；
Described acquisition module, is additionally operable to obtain the conflicting mode of current scheduling moment each neighbor cell；
Compensating module, for utilizing CQI offset that the conflicting mode generic of current each neighbor cell is corresponding to described CQI
Compensating respectively, Corticofugal Modulation of Somatosensory encoding scheme MCS for the current scheduling moment is dispatched.
Device the most according to claim 7, it is characterised in that described acquisition module, is used for obtaining each terminal in this community
The CQI of feedback includes obtaining the full band CQI or subband CQI of each terminal feedback in this community.
Device the most according to claim 8, it is characterised in that described acquisition module is used for obtaining this neighbor cell, community note
The history schedule information of record includes the history schedule information obtaining X neighbor cell record, and described X is positive integer；
Then include according to the conflicting mode that neighbor cell the is different different classes of CQI obtained that carries out classifying: do not have neighbor cell to do
The full band CQI disturbed or subband CQI, less than or equal to the full band CQI of x neighbor cell interference or subband CQI, adjacent more than x
The full band CQI of area interference or subband CQI, a full band portion Resource Block or a sub-band portion Resource Block have one or more
Neighbor cell interference, part resource block does not has the CQI of neighbor cell interference, and wherein, described x is more than or equal to 1, and less than X
Integer.
Device the most according to claim 9, it is characterised in that if described acquisition module is used for obtaining in this community each end
The CQI of end feedback is to obtain the subband CQI of each terminal feedback in this community；The history of this neighbor cell, community of described acquisition record
Schedule information includes obtaining the first neighbor cell and the history schedule information of the second neighbor cell record；
The most described sort module is for carrying out, according to the conflicting mode that neighbor cell is different, the different classes of CQI bag obtained of classifying
Include: there is no the subband CQI of the subband CQI of neighbor cell interference, only described first neighbor cell interference, only have described second phase
The subband CQI of adjacent cell interference, simultaneously have described first neighbor cell and the subband CQI of described second neighbor cell interference, one
Individual sub-band portion Resource Block has described first neighbor cell interference, and part resource block does not has the CQI of neighbor cell interference, a son
Band portion Resource Block has described second neighbor cell interference, and part resource block does not has the CQI of neighbor cell interference.
11. devices according to claim 10, it is characterised in that described computing module is used for:
Being directed to the CQI of each two disturbance mode classification, calculate two adjacent sub-bands, the CQI obtained at synchronization is poor
Value；Described CQI difference is filtered；Filtered CQI difference is defined as the disturbance mode class of two neighbor cells
CQI offset the most each other.
12. devices according to claim 10, it is characterised in that described computing module is used for:
Obtain useful signal interference-to-noise ratio ECINR that terminal the n-th feedback cycle m-th subframe kth subband measurement obtains
For ECINRn,m,k, wherein, described n, m, k are positive integer；
Being M subframe according to feedback cycle, the quantization CQI of the kth subband obtaining terminal the n-th feedback cycle feedback is
CQIn,k, the corresponding ECINR before quantization is:Wherein, described M is positive integer；
By described ECINRn,m,kThe conflicting mode different according to described neighbor cell is classified, and obtains ECINRn,k,i, i=1,2,
3,4 ... x, wherein, described ECINRn,m,kClass categories number equal to the class categories number of described CQI, described x is the most whole
Number；
According to the history schedule information of neighbor cell record, by described ECINRn,m,kCorrespond to described ECINRn,k,iOn, obtainWherein, dn,k,iFor positive integer, represent ECINRn,k,iNumber；
According to subband and the value of feedback cycle, list J equation equation group, obtain the subband that jth equation equation group obtains
ECINR be ECINRn,j,i, described j is less than J, and described j, J are positive integer；
By ECINRn,j,iQuantify to CQI, obtain CQIn,j,iAnd the difference between COI of all categories；
Difference between the COI of all categories obtain described J equation equation group is done averagely respectively, obtains each two disturbance
Mode classification CQI offset each other.
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| CN112104581A (en) * | 2019-06-17 | 2020-12-18 | 中国电信股份有限公司 | Modulation-demodulation method, modulation-demodulation device and computer-readable storage medium |
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