CN105103468B - Determine the method and device of pre-coding matrix - Google Patents
Determine the method and device of pre-coding matrix Download PDFInfo
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- CN105103468B CN105103468B CN201480001611.6A CN201480001611A CN105103468B CN 105103468 B CN105103468 B CN 105103468B CN 201480001611 A CN201480001611 A CN 201480001611A CN 105103468 B CN105103468 B CN 105103468B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
Abstract
The invention discloses a kind of method and apparatus of determining pre-coding matrix, this method includes：Receive the reference signal that base station is sent；According to the reference signal, pre-coding matrix is determined from code book；The corresponding pre-coding matrix instruction of the pre-coding matrix is reported to the base station；Wherein, pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaOr WvFor the first matrix, which passes through to matrix unit VnCarry out operation acquisition, VnFor the matrixes of M × 1 and there is following form：Wherein, P=M orM is the half that integer and M are equal to the number of lines of first matrix or the number of lines of first matrix, N1For the integer more than 1, n is integer and 0≤n≤(N11),S is default real number.The method and apparatus of the determination pre-coding matrix of the present invention, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance and user experience of downlink information.
Description
Technical field
The present embodiments relate to the communications fields, and more particularly, to the method and device for determining pre-coding matrix.
Background technology
In a wireless communication system, in the way of spatial reuse higher transmission rate is obtained using more antennas.
In addition, in order to further increase the transmission performance of system, wireless communication system is using feedback enhancing technology.Specifically, base station is sent out
Predefined pilot signal, the pilot signal that user equipment (User Equipment, UE) is sent according to the base station is sent to carry out letter
Channel state information (Channel State-Information, CSI) measures, and reports the measurement result that CSI is measured to base station,
Wherein, the CSI that UE is reported may include at least one in following message：Order instruction (Rank Indicator, RI), broadband are pre-
Encoder matrix indicates that (Pre-coding Matrix Indicator, PMI) and broadband channel quality indicate (Channel
Quality Indicator, CQI), in this way, base station can be scheduled the UE according to the CSI that UE is reported, and can root
The PMI reported according to the UE sends signal using corresponding precoding technique opposite direction UE and is handled.
With the increase of antenna scale, to effectively reduce antenna size, common antenna is in array of cylinders or planar array
Row, wherein it is arranged on the side surface of cylinder in all antenna element of array of cylinders, and in all days of planar array
Linear array is arranged in the horizontal direction and vertically upward of horizontal plane.Up to the present, technical staff has been proposed being suitable for plane
The codebook structure of aerial array, however, being suitable for the codebook structure of cylinder aerial array not yet.
Invention content
The present invention provides a kind of method and device of determining pre-coding matrix, and can be applied to base station has cylinder body antenna
Communication under the scene of array between base station and UE.
In a first aspect, the present invention provides a kind of methods of determining pre-coding matrix, including：Receive the reference that base station is sent
Signal；According to the reference signal, pre-coding matrix is determined from code book；Report the pre-coding matrix is corresponding to prelist to the base station
Code matrix instruction；Wherein, pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaOr WvFor
First matrix, first matrix pass through to matrix VnCarry out operation acquisition, VnFor the matrixes of M × 1 and there is following form：
Wherein, P=M orM is integer, and M is the number of lines that integer and M are equal to first matrix
Or the half of the number of lines of first matrix, N1For the integer more than 1, n is integer and 0≤n≤(N1- 1),s
For real number.
In the first possible implementation, if the order of the pre-coding matrix is 1, the matrix WaAnd WvColumns
Mesh is 1, and first matrix W1With following form：
Wherein,A1For normalization factor, x is integer, N2It is whole more than 1
Number.
In conjunction with above-mentioned possible realization method, in second of possible realization method, WaAnd WvIn except first matrix it
Another outer matrix is the second matrix, second matrix W2With following form：
Wherein, V is integer and V etc.
In the number of lines of second matrix, K and N3It is the integer more than 1, t and q are integer.
In conjunction with above-mentioned possible realization method, in the third possible realization method, if the order of the pre-coding matrix is big
In or be equal to 2, first matrix have following form：
Wherein, the dimension that I is unit matrix and the I is M, Wo,nFor the squares of M × 1
Battle array and the Wo,nThe first row element and matrix VnThe first row element it is identical, the Wo,nThe second row to M row elements be respectively
The matrix VnThe second row to M row elements opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
In conjunction with above-mentioned possible realization method, in the 4th kind of possible realization method, if the order etc. of the pre-coding matrix
In 2, first matrix W1With following form：
Wherein,N ' is integer and 0≤n '
≤(N1-1)。
In conjunction with above-mentioned possible realization method, in the 5th kind of possible realization method, if the order etc. of the pre-coding matrix
In 2, WaAnd WvIn the second matrix W in addition to first matrix2With following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
Second aspect, the present invention provides another methods for determining pre-coding matrix, including：It is sent to user equipment (UE)
Reference signal；Receive the pre-coding matrix instruction that the UE is sent according to the reference signal；According to the pre-coding matrix instruction, determine
Pre-coding matrix；Wherein, pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaOr WvFor
First matrix, first matrix pass through to matrix VnCarry out operation acquisition, VnFor the matrixes of M × 1 and there is following form：
Wherein, P=M orM is the number of lines or described that integer and M are equal to first matrix
The half of the number of lines of one matrix, N1For the integer more than 1, n is integer and 0≤n≤(N1- 1),S is default real
Number.
In the first possible implementation, if the order of the pre-coding matrix is 1, the matrix WaAnd WvColumns
Mesh is 1, and first matrix W1With following form：
Wherein,A1For normalization factor, x is integer, N2It is whole more than 1
Number.
In conjunction with above-mentioned possible realization method, in second of possible realization method, WaAnd WvIn except first matrix it
Another outer matrix is the second matrix, second matrix W2With following form：
Wherein, V is integer and V etc.
In the number of lines of second matrix, K and N3It is the integer more than 1, t and q are integer.
In conjunction with above-mentioned possible realization method, in the third possible realization method, if the order of the pre-coding matrix is big
In or be equal to 2, first matrix have following form：
Wherein, the dimension that I is unit matrix and the I is M, Wo,nFor the squares of M × 1
Battle array and the Wo,nThe first row element and matrix VnThe first row element it is identical, the Wo,nThe second row to M row elements be respectively
The matrix VnThe second row to M row elements opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
In conjunction with above-mentioned possible realization method, in the 4th kind of possible realization method, if the order etc. of the pre-coding matrix
In 2, first matrix W1With following form：
Wherein,N ' is integer and 0≤n '
≤(N1-1)。
In conjunction with above-mentioned possible realization method, in the 5th kind of possible realization method, if the order etc. of the pre-coding matrix
In 2, WaAnd WvIn the second matrix W in addition to first matrix2With following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
The third aspect, the present invention provide a kind of device of determining pre-coding matrix, including：Receiving module, for receiving base
Stand send reference signal；Determining module, the reference signal for being received according to the receiving module are determining from code book to prelist
Code matrix；Sending module, for reporting the corresponding pre-coding matrix of the pre-coding matrix that the determining module determines to the base station
Instruction；Wherein, pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaOr WvFor the first square
Battle array, first matrix pass through to matrix VnCarry out operation acquisition, VnFor the matrixes of M × 1 and there is following form：
Wherein, P=M orM is the number of lines or described that integer and M are equal to first matrix
The half of the number of lines of one matrix, N1For the integer more than 1, n is integer and 0≤n≤(N1- 1),S is default real
Number.
In the first possible implementation, if the order of the pre-coding matrix is 1, the matrix WaAnd WvColumns
Mesh is 1, and first matrix W1With following form：
Wherein,A1For normalization factor, x is integer, N2It is whole more than 1
Number.
In conjunction with above-mentioned possible realization method, in second of possible realization method, WaAnd WvIn except first matrix it
Another outer matrix is the second matrix, second matrix W2With following form：
Wherein, V is integer and V etc.
In the number of lines of second matrix, K and N3It is the integer more than 1, t and q are integer.
In conjunction with above-mentioned possible realization method, in the third possible realization method, if the order of the pre-coding matrix is big
In or be equal to 2, first matrix have following form：
Wherein, the dimension that I is unit matrix and the I is M, Wo,nFor the squares of M × 1
Battle array and the Wo,nThe first row element and matrix VnThe first row element it is identical, the Wo,nThe second row to M row elements be respectively
The matrix VnThe second row to M row elements opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
In conjunction with above-mentioned possible realization method, in the 4th kind of possible realization method, if the order etc. of the pre-coding matrix
In 2, first matrix W1With following form：
Wherein, n ' is integer and 0≤n '
≤(N1-1)。
In conjunction with above-mentioned possible realization method, in the 5th kind of possible realization method, if the order etc. of the pre-coding matrix
In 2, WaAnd WvIn the second matrix W in addition to first matrix2With following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
Fourth aspect, the present invention provides another devices for determining pre-coding matrix, including：Sending module, for
User equipment (UE) sends reference signal；Receiving module receives what the UE was sent according to the reference signal that the sending module is sent
Pre-coding matrix instruction；Determining module, the pre-coding matrix instruction for being received according to the receiving module, determines precoding square
Battle array；Wherein, pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaOr WvFor the first square
Battle array, first matrix pass through to matrix VnCarry out operation acquisition, VnFor the matrixes of M × 1 and there is following form：
Wherein, P=M orM is the number of lines or described that integer and M are equal to first matrix
The half of the number of lines of one matrix, N1For the integer more than 1, n is integer and 0≤n≤(N1- 1),S is default real
Number.
In the first possible implementation, if the order of the pre-coding matrix is 1, the matrix WaAnd WvColumns
Mesh is 1, and first matrix W1With following form：
Wherein,A1For normalization factor, x is integer, N2It is whole more than 1
Number.
In conjunction with above-mentioned possible realization method, in second of possible realization method, WaAnd WvIn except first matrix it
Another outer matrix is the second matrix, second matrix W2With following form：
Wherein, V is integer and V etc.
In the number of lines of second matrix, K and N3It is the integer more than 1, t and q are integer.
In conjunction with above-mentioned possible realization method, in the third possible realization method, if the order of the pre-coding matrix is big
In or be equal to 2, first matrix have following form：
Wherein, the dimension that I is unit matrix and the I is M, Wo,nFor the squares of M × 1
Battle array and the Wo,nThe first row element and matrix VnThe first row element it is identical, the Wo,nThe second row to M row elements be respectively
The matrix VnThe second row to M row elements opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
In conjunction with above-mentioned possible realization method, in the 4th kind of possible realization method, if the order etc. of the pre-coding matrix
In 2, first matrix W1With following form：
Wherein,Wherein, n ' is integer and 0
≤n′≤(N1-1)。
In conjunction with above-mentioned possible realization method, in the 5th kind of possible realization method, if the order etc. of the pre-coding matrix
In 2, WaAnd WvIn the second matrix W in addition to first matrix2With following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
Based on the above-mentioned technical proposal, the method for determining pre-coding matrix provided by the invention, based on new between base station and UE
Code book communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book,
And the corresponding PMI of the pre-coding matrix, the downlink for the PMI opposite directions UE transmissions that base station is reported according to the UE is reported to believe to the base station
Breath is handled, and being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information,
Improve user experience.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to the embodiment of the present invention or the prior art
Attached drawing needed in description is briefly described, it should be apparent that, drawings described below is only the present invention's
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the schematic flow chart of the method for the determination pre-coding matrix of the embodiment of the present invention.
Fig. 2 is the stereoscopic schematic diagram of the cylinder aerial array of the embodiment of the present invention.
Fig. 3 is the vertical view of cylinder aerial array shown in Fig. 2.
Fig. 4 is the schematic flow chart of the method for the determination pre-coding matrix of another embodiment of the present invention.
Fig. 5 is the schematic block diagram of the device of the determination pre-coding matrix of the embodiment of the present invention.
Fig. 6 is the schematic block diagram of the device of the determination pre-coding matrix of another embodiment of the present invention.
Fig. 7 is the schematic block diagram of the device of the determination pre-coding matrix of yet another embodiment of the invention.
Fig. 8 is the schematic block diagram of the device of the determination pre-coding matrix of yet another embodiment of the invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is a part of the embodiment of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other reality that those of ordinary skill in the art are obtained without making creative work
Example is applied, the scope of protection of the invention should be all belonged to.
It should be understood that the technical solution of the embodiment of the present invention can be applied to various communication systems, such as：Global system for mobile telecommunications
(Global System of Mobile communication, referred to as " GSM ") system, CDMA (Code
Division Multiple Access, referred to as " CDMA ") system, wideband code division multiple access (Wideband Code
Division Multiple Access, referred to as " WCDMA ") system, General Packet Radio Service (General Packet
Radio Service, referred to as " GPRS "), long term evolution (Long Term Evolution, referred to as " LTE ") system, LTE
Frequency division duplex (Frequency Division Duplex, referred to as " FDD ") system, LTE time division duplexs (Time Division
Duplex, referred to as " TDD "), Universal Mobile Communication System (Universal Mobile Telecommunication
System, referred to as " UMTS "), global interconnection inserting of microwave (Worldwide Interoperability for
Microwave Access, referred to as " WiMAX ") communication system etc..
It should also be understood that in embodiments of the present invention, user equipment (User Equipment, referred to as " UE ") can be referred to as
Terminal (Terminal), mobile station (Mobile Station, referred to as " MS "), mobile terminal (Mobile Terminal) etc.,
The user equipment can be through wireless access network (Radio Access Network, referred to as " RAN ") and one or more cores
Net is communicated, for example, user equipment can be mobile phone (or being " honeycomb " phone), the computer with mobile terminal
Deng, for example, user equipment can also be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device,
They exchange voice and/or data with wireless access network.
It should also be understood that in embodiments of the present invention, base station can be the base station (Base in GSM or CDMA
Transceiver Station, referred to as " BTS "), it can also be the base station (NodeB) in WCDMA, can also be in LTE
Evolved base station (evolved Node B, referred to as " eNB " or " e-NodeB "), the present invention is to this and is not construed as limiting.
It should also be understood that the method and device of determining pre-coding matrix provided in an embodiment of the present invention is mainly used in cylinder
The scene of aerial array, it is also possible to be applied to other scenes, it is not limited in the embodiment of the present invention.
Fig. 1 shows the schematic flow chart of the method 100 of determining pre-coding matrix according to the ... of the embodiment of the present invention, the party
Method can be executed by UE, as shown in Figure 1, this method 100 includes：
S110 receives the reference signal that base station is sent；
S120 determines pre-coding matrix according to the reference signal from code book；
S130 reports the corresponding pre-coding matrix instruction of the pre-coding matrix to the base station；
Wherein, pre-coding matrix W is matrix WaAnd matrix WvKronecker productShape WaOr WvIt is
One matrix, first matrix pass through to matrix VnCarry out operation acquisition, VnFor the matrixes of M × 1 and with such as following formula：
Wherein, P=M orM is the number of lines or first square that integer and M are equal to first matrix
The half of the number of lines of battle array, N1For the integer more than 1, n is integer and 0≤n≤(N1- 1),S is default real number.
Therefore, the method for determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
In the embodiment of the present invention, the N1Can be default integer, base station and UE are communicated based on a kind of new code book, should
At least one pre-coding matrix that code book includes is above-mentioned pre-coding matrix W.Specifically, which determines in the step s 120
Pre-coding matrix W is matrix WaAnd matrix WvKronecker product, wherein WaDimension be M1×M2, matrix WvDimension be M3
×M4, and matrix WaAnd matrix WvThe component parts of pre-coding matrix W on two dimensions can be corresponded to respectively, for example, the matrix
WaFor component parts of the pre-coding matrix W on the bottom surface of cylinder, matrix WvFor pre-coding matrix W cylinder axis institute
Component part on direction；Or conversely, it is not limited in the embodiment of the present invention.
In embodiments of the present invention, by matrix WaAnd matrix WvIn one of matrix be known as the first matrix W1, and will be another
One matrix is known as the second matrix W2, wherein first matrix passes through to matrix VnCarry out operation acquisition, optionally, first square
Battle array itself can be equal to the matrix VnOr the matrix VnIt is by matrix for a part for first matrix or first matrix
VnMatrixing acquisition, etc. is carried out, it is not limited in the embodiment of the present invention.
The matrix VnDimension M can be equal to first matrix number of lines or number of lines equal to first matrix one
Half, optionally, if the first matrix W1Antenna configurations in corresponding dimension are single polarization form, then the M can be equal to this
The number of lines of one matrix, specifically, if matrix WaFor the first matrix, then M=M1, and if matrix WvFor the first matrix, then M
=M3；If the first matrix W1Antenna configurations in corresponding dimension are dual polarization form, then the M can be equal to first matrix
Number of lines half, specifically, if matrix WaFor the first matrix, then M=M1/ 2, and if matrix WvFor the first matrix, then
M=M3/2.It follows that the M can be indicated in the first matrix W1Each of at least one polarization direction in corresponding dimension
Port number in polarization direction, but the embodiment of the present invention is without being limited thereto.
The matrix VnElementIt can indicate i-th antenna
Weighted factor.As shown in Fig. 2, each antenna element of cylinder aerial array is distributed on the side of cylinder, Fig. 3 is shown
The vertical view of cylinder aerial array shown in Fig. 2, it is assumed that the number for being distributed in the antenna port on base circumference is M and antenna
Form is single polarization form, and bottom surface radius is r, and the angle between two antenna element of arbitrary neighborhood is α, with two of which day
Line direction between linear array is y-axis, and will be denoted as first antenna positioned at the antenna element of positive direction of the y-axis, then i-th
The angle [alpha] of root antennaiIt is determined by following formula：
Assuming that the angle between an incident wave beam and y-axis is θ, then wave path-difference d of i-th antenna relative to originiBy formula
Following formula determines：
Correspondingly, phase of i-th antenna relative to originIt is determined by following formula：
Wherein, f is the frequency of wave, and λ is the wavelength of wave, and f × λ=c, c are the light velocity.Assuming that between arbitrary two antennas
Arc length is s λ, then can obtain：
Bringing formula (5) into formula (4) can obtain：
Phase difference caused by wave path-difference in order to compensate for each antenna can be that i-th antenna introduces weighted factorAndThen the weighted factor of i-th antenna can be expressed asCorresponding to formula
(1) in the case where P=M, but the embodiment of the present invention is without being limited thereto.
Optionally, as another embodiment, it is assumed that the chord length between arbitrary two antennas is s λ, then can obtain：
Correspondingly, bringing formula (7) into formula (4) can obtain：
At this point, the weighted factor of i-th antenna can be expressed asCorresponding to formula (1)
InThe case where, but the embodiment of the present invention is without being limited thereto.
Optionally, if the order of pre-coding matrix W is 1, M2=M4=1, and first matrix W1There can be following shape
Formula：
Wherein,A1For normalization factor, x is integer, N2For the integer more than 1.
Optionally, the value range of the x is 0≤x≤(N2- 1), the N2It can be default integer.
Optionally, as another embodiment, the second matrix W2There can be following form：
Wherein,V is the number of lines that integer and V are equal to second matrix, K and N3It is to be more than 1
Integer, t and q are integer.
Optionally, the value range of t is 0≤t≤(K-1), and the value range of q is 0≤q≤(N3- 1), K and N3It can be with
To preset integer, but the embodiment of the present invention is without being limited thereto.
Optionally, as another embodiment, pre-coding matrix W of the order more than or equal to 2 can have discrete fourier to become
(Discrete Fourier Transform, DFT) form or person of outstanding talent Si Huoerde (Householder) transformation matrix form are changed,
Optionally, when pre-coding matrix W has DFT forms, if the order of the pre-coding matrix is equal to 2, first matrix W1It can
By in the form of following：
Wherein, n ' is integer and 0≤n '≤(N1-1)；
Correspondingly, the second matrix W2There can be following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
Specifically, if matrix WaFor the first matrix, then M=M1, and if matrix WvFor the first matrix, then M=M3, this
Inventive embodiments do not limit this.Optionally, when the order of pre-coding matrix W is more than 2, the W1And W2Class can also be passed through
As form indicate, it is not limited in the embodiment of the present invention.
Optionally, as another embodiment, when pre-coding matrix W has Householder transformation matrix forms, if
The order of the pre-coding matrix is greater than or equal to 2, then first matrix W1There can be following form：
Wherein, the dimension that I is unit matrix and the I is M, Wo,nFor the matrixes of M × 1 and the Wo,nThe first row element with
The VnThe first row element it is identical, the Wo,nThe second row to M row elements be respectively the VnThe second row to M rows member
The opposite number of element,It indicates to matrix Wo,nCarry out conjugate transposition operation.
As described above, matrix Wo,nThere can be following form：
In embodiments of the present invention, when the first matrix W1When with above-mentioned Householder matrixings form, the second square
Battle array W2There can be any appropriate form.Optionally, when the order of pre-coding matrix W is equal to 2, second matrix W2Can have
There is form shown in formula (12), but the embodiment of the present invention is without being limited thereto.
Therefore, the method for determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
Above in conjunction with Fig. 1 to Fig. 3, determining precoding square according to the ... of the embodiment of the present invention is described in detail from the angle of UE
Determining precoding square according to another embodiment of the present invention is described in detail from the angle of base station below in conjunction with Fig. 4 in the method for battle array
The method of battle array.
Fig. 4 shows the schematic flow chart of the method 200 of determining pre-coding matrix according to another embodiment of the present invention,
This method can be executed by base station, as shown in figure 4, this method 200 includes：
S210 sends reference signal to user equipment (UE)；
S220 receives the pre-coding matrix instruction that the UE is sent according to the reference signal；
S230 determines pre-coding matrix according to the pre-coding matrix instruction；
Wherein, pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaOr WvIt is first
Matrix, first matrix pass through to matrix VnCarry out operation acquisition, VnFor the matrixes of M × 1 and there is following form：
Wherein, P=M orM is the number of lines or described that integer and M are equal to first matrix
The half of the number of lines of one matrix, N1For the integer more than 1, n is integer and 0≤n≤(N1- 1),S is default real
Number.
Therefore, the method for determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
In embodiments of the present invention, matrix WaAnd matrix WvThe groups of pre-coding matrix W on two dimensions can be corresponded to respectively
At part, for example, the matrix WaFor component parts of the pre-coding matrix W on the bottom surface of cylinder, matrix WvFor pre-coding matrix
Component parts of the W in the axis direction of cylinder；Or conversely, it is not limited in the embodiment of the present invention.
In embodiments of the present invention, WaDimension be M1×M2, matrix WvDimension be M3×M4, by matrix WaAnd matrix Wv
In one of matrix be known as the first matrix W1, and another matrix is known as the second matrix W2, wherein first matrix is logical
It crosses to matrix VnOperation acquisition is carried out, optionally, first matrix itself can be equal to the matrix VnOr the matrix VnFor this
A part for one matrix or first matrix are by matrix VnCarry out matrixing acquisition, etc., the embodiment of the present invention pair
This is not limited.
Optionally, if the order of the pre-coding matrix is 1, M2=M4=1, and first matrix W1With following form：
Wherein,A1For normalization factor, x is integer, N2For the integer more than 1.
Optionally, as another embodiment, second matrix W2With following form：
Wherein,V is the number of lines that integer and V are equal to second matrix, K and N3It is to be more than 1
Integer, t and q are integer.
Optionally, as another embodiment, if the order of the pre-coding matrix is equal to 2, first matrix W1With following shape
Formula：
Wherein, n ' is integer and 0≤n '≤(N1-1)。
Correspondingly, the second matrix W2There can be following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
Optionally, as another embodiment, if the order of the pre-coding matrix is greater than or equal to 2, first matrix have with
Lower form：
Wherein, the dimension that I is unit matrix and the I is M, Wo,nFor the matrixes of M × 1 and the Wo,nThe first row element and matrix
VnThe first row element it is identical, the Wo,nThe second row to M row elements be respectively the matrix VnThe second row to M row elements
Opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
As described above, matrix Wo,nThere can be following form：
In embodiments of the present invention, when the first matrix W1When with above-mentioned Householder matrixings form, the second square
Battle array W2There can be any appropriate form.Optionally, when the order of pre-coding matrix W is equal to 2, second matrix W2Can have
There is form shown in formula (19), but the embodiment of the present invention is without being limited thereto.
Therefore, the method for determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
Above in conjunction with Fig. 1 to Fig. 4, the method that determining pre-coding matrix according to the ... of the embodiment of the present invention is described in detail,
Below in conjunction with Fig. 5 to Fig. 8, the device of determining pre-coding matrix according to the ... of the embodiment of the present invention is described in detail.
Fig. 5 shows the schematic block diagram of the device 300 of determining pre-coding matrix according to the ... of the embodiment of the present invention, such as Fig. 5
Shown, which includes：
Receiving module 310, the reference signal for receiving base station transmission；
Determining module 320, the reference signal for being received according to the receiving module 310 determine precoding from code book
Matrix；
Sending module 330, for reporting the pre-coding matrix of the determining module 320 determination is corresponding to prelist to the base station
Code matrix instruction；
Wherein, pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaOr WvIt is first
Matrix, first matrix pass through to matrix VnCarry out operation acquisition, VnFor the matrixes of M × 1 and there is following form：
Wherein, P=M orM is the number of lines or described that integer and M are equal to first matrix
The half of the number of lines of one matrix, N1For the integer more than 1, n is integer and 0≤n≤(N1- 1),S is default real
Number.
Therefore, the device of determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
In embodiments of the present invention, WaDimension be M1×M2, matrix WvDimension be M3×M4.Optionally, if this prelists
Code rank of matrix is 1, then M2=M4=1, and first matrix W1With following form：
Wherein,A1For normalization factor, x is integer, N2For the integer more than 1.
Optionally, as another embodiment, second matrix W2With following form：
Wherein,V is the number of lines that integer and V are equal to second matrix, K and N3It is to be more than 1
Integer, t and q are integer.
Optionally, as another embodiment, if the order of the pre-coding matrix is equal to 2, first matrix W1With following shape
Formula：
Wherein, n ' is integer and 0≤n '≤(N1-1)。
Correspondingly, the second matrix W2There can be following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
Optionally, as another embodiment, if the order of the pre-coding matrix is greater than or equal to 2, first matrix have with
Lower form：
Wherein, the dimension that I is unit matrix and the I is M, Wo,nFor the matrixes of M × 1 and the Wo,nThe first row element and matrix
VnThe first row element it is identical, the Wo,nThe second row to M row elements be respectively the matrix VnThe second row to M row elements
Opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
As described above, matrix Wo,nThere can be following form：
In embodiments of the present invention, when the first matrix W1When with above-mentioned Householder matrixings form, the second square
Battle array W2There can be any appropriate form.Optionally, when the order of pre-coding matrix W is equal to 2, second matrix W2Can have
There is form shown in formula (27), but the embodiment of the present invention is without being limited thereto.
The device 300 of determining pre-coding matrix according to the ... of the embodiment of the present invention can correspond to according to the ... of the embodiment of the present invention true
Determine the base station in the method for pre-coding matrix, and determines the above-mentioned of modules in the device 300 of pre-coding matrix and its
Its operation and/or function is respectively in order to realize the corresponding flow of each method in Fig. 1, for sake of simplicity, details are not described herein.
Therefore, the device of determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
Fig. 6 shows the schematic block diagram of the device 400 of determining pre-coding matrix according to another embodiment of the present invention, such as
Shown in Fig. 6, which includes：
Sending module 410, for sending reference signal to user equipment (UE)；
Receiving module 420 receives the pre-coding matrix that the UE is sent according to the reference signal that the sending module 410 is sent
Instruction；
Determining module 430, the pre-coding matrix instruction for being received according to the receiving module 420, determines precoding square
Battle array；
Wherein, pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaOr WvIt is first
Matrix, first matrix pass through to matrix VnCarry out operation acquisition, VnFor the matrixes of M × 1 and there is following form：
Wherein, P=M orM is the number of lines or described that integer and M are equal to first matrix
The half of the number of lines of one matrix, N1For the integer more than 1, n is integer and 0≤n≤(N1- 1),S is default real
Number.
Therefore, the device of determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
In embodiments of the present invention, WaDimension be M1×M2, matrix WvDimension be M3×M4.Optionally, if this prelists
Code rank of matrix is 1, then M2=M4=1, and first matrix W1With following form：
Wherein,A1For normalization factor, x is integer, N2For the integer more than 1.
Optionally, as another embodiment, second matrix W2With following form：
Wherein,V is the number of lines that integer and V are equal to second matrix, K and N3It is to be more than 1
Integer, t and q are integer.
Optionally, as another embodiment, if the order of the pre-coding matrix is equal to 2, first matrix W1With following shape
Formula：
Wherein, n ' is integer and 0≤n '≤(N1-1)。
Correspondingly, the second matrix W2There can be following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
Optionally, as another embodiment, if the order of the pre-coding matrix is greater than or equal to 2, first matrix have with
Lower form：
Wherein, the dimension that I is unit matrix and the I is M, Wo,nFor the matrixes of M × 1 and the Wo,nThe first row element and matrix
VnThe first row element it is identical, the Wo,nThe second row to M row elements be respectively the matrix VnThe second row to M row elements
Opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
As described above, matrix Wo,nThere can be following form：
In embodiments of the present invention, when the first matrix W1When with above-mentioned Householder matrixings form, the second square
Battle array W2There can be any appropriate form.Optionally, when the order of pre-coding matrix W is equal to 2, second matrix W2Can have
There is form shown in formula (33), but the embodiment of the present invention is without being limited thereto.
The device 400 of determining pre-coding matrix according to the ... of the embodiment of the present invention can correspond to according to the ... of the embodiment of the present invention true
Determine the base station in the method for pre-coding matrix, and determines the above-mentioned of modules in the device 400 of pre-coding matrix and its
Its operation and/or function is respectively in order to realize the corresponding flow of each method in Fig. 4, for sake of simplicity, details are not described herein.
Therefore, the device of determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
Fig. 7 shows the schematic block diagram of the device 500 of determining pre-coding matrix according to the ... of the embodiment of the present invention, such as Fig. 7
Shown, which includes：
Receiver 510, the reference signal for receiving base station transmission；
Processor 520, the reference signal for being received according to the receiver 510 determine pre-coding matrix from code book；
Transmitter 530, for reporting the corresponding precoding square of the pre-coding matrix that the processor 520 determines to the base station
Battle array instruction；
Wherein, pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaOr WvIt is
One matrix, first matrix pass through to matrix VnCarry out operation acquisition, VnFor the matrixes of M × 1 and there is following form：
Wherein, P=M orM is the number of lines or described that integer and M are equal to first matrix
The half of the number of lines of one matrix, N1For the integer more than 1, n is integer and 0≤n≤(N1- 1),S is default real
Number.
Therefore, the device of determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
It should be understood that in embodiments of the present invention, which can be central processing unit (Central
Processing Unit, referred to as " CPU "), which can also be other general processors, digital signal processor
(DSP), application-specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) or other programmable logic device, discrete gate
Or transistor logic, discrete hardware components etc..General processor can be that microprocessor or the processor can also
It is any conventional processor etc..
The device 500 can also include memory, for storing code book, the memory may include read-only memory and with
Machine accesses memory, and provides instruction and data to processor 520.The a part of of memory can also include non-volatile random
Access memory.For example, memory can be with the information of storage device type.
During realization, each step of the above method can pass through the integrated logic circuit of the hardware in processor 520
Or the instruction of software form is completed.The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly at hardware
Reason device executes completion, or in processor hardware and software module combine and execute completion.Software module can be located at random
Memory, flash memory, read-only memory, the abilities such as programmable read only memory or electrically erasable programmable memory, register
In the storage medium of domain maturation.The storage medium is located at memory, and processor 520 reads the information in memory, hard in conjunction with it
Part completes the step of above method.To avoid repeating, it is not detailed herein.
In embodiments of the present invention, WaDimension be M1×M2, matrix WvDimension be M3×M4.Optionally, if this prelists
Code rank of matrix is 1, then M2=M4=1, and first matrix W1With following form：
Wherein,A1For normalization factor, x is integer, N2For the integer more than 1.
Optionally, as another embodiment, second matrix W2With following form：
Wherein,V is the number of lines that integer and V are equal to second matrix, K and N3It is to be more than 1
Integer, t and q are integer.
Optionally, as another embodiment, if the order of the pre-coding matrix is equal to 2, first matrix W1With following shape
Formula：
Wherein, n ' is integer and 0≤n '≤(N1-1)。
Correspondingly, the second matrix W2There can be following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
Optionally, as another embodiment, if the order of the pre-coding matrix is greater than or equal to 2, first matrix have with
Lower form：
Wherein, the dimension that I is unit matrix and the I is M, Wo,nFor the matrixes of M × 1 and the Wo,nThe first row element and matrix
VnThe first row element it is identical, the Wo,nThe second row to M row elements be respectively the matrix VnThe second row to M row elements
Opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
As described above, matrix Wo,nThere can be following form：
In embodiments of the present invention, when the first matrix W1When with above-mentioned Householder matrixings form, the second square
Battle array W2There can be any appropriate form.Optionally, when the order of pre-coding matrix W is equal to 2, second matrix W2Can have
There is form shown in formula (40), but the embodiment of the present invention is without being limited thereto.
The device 500 of determining pre-coding matrix according to the ... of the embodiment of the present invention can correspond to according to the ... of the embodiment of the present invention true
Determine the base station in the method for pre-coding matrix, and determines the above-mentioned of modules in the device 500 of pre-coding matrix and its
Its operation and/or function is respectively in order to realize the corresponding flow of each method in Fig. 1, for sake of simplicity, details are not described herein.
Therefore, the device of determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
Fig. 8 shows the schematic block diagram of the device 600 of determining pre-coding matrix according to another embodiment of the present invention, such as
Shown in Fig. 8, which includes：
Transmitter 610, for sending reference signal to user equipment (UE)；
Receiver 620 receives the pre-coding matrix that the reference signal that the UE is sent according to the transmitter 610 is sent and refers to
Show；
Processor 630, the pre-coding matrix instruction for being received according to the receiver 620, determines pre-coding matrix；
Wherein, pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaOr WvIt is first
Matrix, first matrix pass through to matrix VnCarry out operation acquisition, VnFor the matrixes of M × 1 and there is following form：
Wherein, P=M orM is the number of lines or described that integer and M are equal to first matrix
The half of the number of lines of one matrix, N1For the integer more than 1, n is integer and 0≤n≤(N1- 1),S is default real
Number.
Therefore, the device of determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
It should be understood that in embodiments of the present invention, which can be central processing unit (CPU), the processor
630 can also be other general processors, digital signal processor (DSP), application-specific integrated circuit (ASIC), ready-made programmable gate
Array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components etc..It is general
Processor can be microprocessor or the processor can also be any conventional processor etc..
The device 600 can also include memory, which may include read-only memory and random access memory,
And provide instruction and data to processor 630.The a part of of memory can also include nonvolatile RAM.Example
Such as, memory can be with the information of storage device type.
During realization, each step of the above method can pass through the integrated logic circuit of the hardware in processor 630
Or the instruction of software form is completed.The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly at hardware
Reason device executes completion, or in processor hardware and software module combine and execute completion.Software module can be located at random
Memory, flash memory, read-only memory, the abilities such as programmable read only memory or electrically erasable programmable memory, register
In the storage medium of domain maturation.The storage medium is located at memory, and processor 630 reads the information in memory, hard in conjunction with it
Part completes the step of above method.To avoid repeating, it is not detailed herein.
In embodiments of the present invention, WaDimension be M1×M2, matrix WvDimension be M3×M4.Optionally, if this prelists
Code rank of matrix is 1, then M2=M4=1, and first matrix W1With following form：
Wherein,A1For normalization factor, x is integer, N2For the integer more than 1.
Optionally, as another embodiment, second matrix W2With following form：
Wherein,V is the number of lines that integer and V are equal to second matrix, K and N3It is to be more than 1
Integer, t and q are integer.
Optionally, as another embodiment, if the order of the pre-coding matrix is equal to 2, first matrix W1With following shape
Formula：
Wherein, n ' is integer and 0≤n '≤(N1-1)。
Correspondingly, the second matrix W2There can be following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
Optionally, as another embodiment, if the order of the pre-coding matrix is greater than or equal to 2, first matrix have with
Lower form：
Wherein, the dimension that I is unit matrix and the I is M, Wo,nFor the matrixes of M × 1 and the Wo,nThe first row element and matrix
VnThe first row element it is identical, the Wo,nThe second row to M row elements be respectively the matrix VnThe second row to M row elements
Opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
As described above, matrix Wo,nThere can be following form：
In embodiments of the present invention, when the first matrix W1When with above-mentioned Householder matrixings form, the second square
Battle array W2There can be any appropriate form.Optionally, when the order of pre-coding matrix W is equal to 2, second matrix W2Can have
There is form shown in formula (47), but the embodiment of the present invention is without being limited thereto.
The device 600 of determining pre-coding matrix according to the ... of the embodiment of the present invention can correspond to according to the ... of the embodiment of the present invention true
Determine the base station in the method for pre-coding matrix, and determines the above-mentioned of modules in the device 600 of pre-coding matrix and its
Its operation and/or function is respectively in order to realize the corresponding flow of each method in Fig. 4, for sake of simplicity, details are not described herein.
Therefore, the device of determining pre-coding matrix according to the ... of the embodiment of the present invention, based on new code book between base station and UE
Communicated, UE by being measured to the reference signal that base station is sent to determine the pre-coding matrix in the code book, and to this
Base station reports the corresponding PMI of the pre-coding matrix, the downlink information for the PMI opposite directions UE transmissions that base station is reported according to the UE to carry out
Processing, being mainly used in base station has the scene of cylinder aerial array, can improve the transmission performance of downlink information, improves and uses
It experiences at family.
It should be understood that in embodiments of the present invention, term "and/or" is only a kind of incidence relation of description affiliated partner,
Indicate may exist three kinds of relationships.For example, A and/or B, can indicate：Individualism A, exists simultaneously A and B, individualism B this
Three kinds of situations.In addition, character "/" herein, it is a kind of relationship of "or" to typically represent forward-backward correlation object.
Those of ordinary skill in the art may realize that each method steps in conjunction with described in the embodiments described herein
Rapid and unit, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and soft
The interchangeability of part, the step of generally describing each embodiment according to function in the above description and composition.These
Function is implemented in hardware or software actually, depends on the specific application and design constraint of technical solution.Ability
Domain those of ordinary skill can use different methods to achieve the described function each specific application, but this reality
Now it should not be considered as beyond the scope of the present invention.
It is apparent to those skilled in the art that for convenience of description and succinctly, foregoing description is
The specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.In addition, shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be the INDIRECT COUPLING by some interfaces, device or unit
Or communication connection, can also be electricity, mechanical or other form connections.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the embodiment of the present invention
Purpose.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, can also be during two or more units are integrated in one unit.It is above-mentioned integrated
The form that hardware had both may be used in unit is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, letter
Referred to as " ROM "), random access memory (Random Access Memory, referred to as " RAM "), magnetic disc or CD etc. it is each
Kind can store the medium of program code.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain subject to.
Claims (20)
1. a kind of method of determining pre-coding matrix, which is characterized in that including：
Receive the reference signal that base station is sent；
According to the reference signal, pre-coding matrix is determined from code book；
The corresponding pre-coding matrix instruction of the pre-coding matrix is reported to the base station；
Wherein, the pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaIt prelists described in correspondence
Component part of the code matrix W on the cylinder bottom surface in cylinder aerial array or the composition in cylinder axis direction
Part, WvComponent parts of the corresponding pre-coding matrix W in the cylinder axis direction in cylinder aerial array
Or the component part on cylinder bottom surface, WaOr WvFor the first matrix, first matrix is matrix VnOr the matrix VnFor
A part for first matrix or first matrix are by the matrix VnCarry out matrixing acquisition, matrix VnFor
The matrixes of M × 1 and have following form：
Wherein, P=M orM is the matrix VnNumber of lines, M is that integer and M are equal to first matrix
Number of lines or first matrix number of lines half, N1For preset integer, n is integer and 0≤n≤(N1- 1),S is default real number；
If the order of the pre-coding matrix is 1, the matrix WaAnd WvColumn number be 1, and first matrix W1Have
Following form：
Wherein,A1For normalization factor, x is integer, N2For the integer more than 1.
2. according to the method described in claim 1, it is characterized in that, WaAnd WvIn another square in addition to first matrix
Battle array is the second matrix, second matrix W2With following form：
Wherein, V is the number of lines that integer and V are equal to second matrix, LtFor intermediate variable matrix, K and N3It is preset whole
Number, t and q are integer, also, the value range of t is 0≤t≤(K-1), and the value range of q is 0≤q≤(N3-1)。
3. method according to claim 1 or 2, which is characterized in that if the order of the pre-coding matrix is greater than or equal to 2,
First matrix has following form：
Wherein,
I is that the dimension of unit matrix and the I are M, Wo,nFor the matrixes of M × 1 and the Wo,nThe first row element and matrix VnFirst
Row element is identical, the Wo,nThe second row to M row elements be respectively the matrix VnThe second row to M row elements opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
4. method according to claim 1 or 2, which is characterized in that if the order of the pre-coding matrix is equal to 2, described the
One matrix W1With following form：
Wherein, n ' is integer and 0≤n '≤(N1-1)。
5. if according to the method described in claim 3, it is characterized in that, the order of the pre-coding matrix is equal to 2, WaAnd WvIn remove
The second matrix W except first matrix2With following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
6. a kind of method of determining pre-coding matrix, which is characterized in that including：
Reference signal is sent to user equipment (UE)；
Receive the pre-coding matrix instruction that the UE is sent according to the reference signal；
According to the pre-coding matrix instruction, pre-coding matrix is determined；
Wherein, the pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaCorrespondence is described pre-
Component parts of the encoder matrix W on the cylinder bottom surface in cylinder aerial array or the group in cylinder axis direction
At part, WvComposition portions of the corresponding pre-coding matrix W in the cylinder axis direction in cylinder aerial array
Point or cylinder bottom surface on component part, WaOr WvFor the first matrix, first matrix is matrix VnOr the matrix Vn
It is by the matrix V for a part for first matrix or first matrixnCarry out matrixing acquisition, matrix Vn
For the matrixes of M × 1 and there is following form：
Wherein, P=M orM is the matrix VnNumber of lines, M is that integer and M are equal to first matrix
Number of lines or first matrix number of lines half, N1For preset integer, n is integer and 0≤n≤(N1- 1),S is default real number Vn；
If the order of the pre-coding matrix is 1, the matrix WaAnd WvColumn number be 1, and first matrix W1Have
Following form：
Wherein,A1For normalization factor, x is integer, N2For the integer more than 1.
7. according to the method described in claim 6, it is characterized in that, WaAnd WvIn another square in addition to first matrix
Battle array is the second matrix, second matrix W2With following form：
Wherein, V is the number of lines that integer and V are equal to second matrix, LtFor intermediate variable matrix, K and N3It is preset whole
Number, t and q are integer, also, the value range of t is 0≤t≤(K-1), and the value range of q is 0≤q≤(N3-1)。
8. the method described according to claim 6 or 7, which is characterized in that if the order of the pre-coding matrix is greater than or equal to 2,
First matrix has following form：
Wherein,
I is that the dimension of unit matrix and the I are M, Wo,nFor the matrixes of M × 1 and the Wo,nThe first row element and matrix VnFirst
Row element is identical, the Wo,nThe second row to M row elements be respectively the matrix VnThe second row to M row elements opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
9. the method described according to claim 6 or 7, which is characterized in that if the order of the pre-coding matrix is equal to 2, described the
One matrix W1With following form：
Wherein, n ' is integer and 0≤n '≤(N1-1)。
10. if according to the method described in claim 8, it is characterized in that, the order of the pre-coding matrix is equal to 2, WaAnd WvIn remove
The second matrix W except first matrix2With following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
11. a kind of device of determining pre-coding matrix, which is characterized in that including：
Receiving module, the reference signal for receiving base station transmission；
Determining module, the reference signal for being received according to the receiving module determine pre-coding matrix from code book；
Sending module, for reporting the corresponding precoding square of the pre-coding matrix that the determining module determines to the base station
Battle array instruction；
Wherein, the pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaIt prelists described in correspondence
Component part of the code matrix W on the cylinder bottom surface in cylinder aerial array or the composition in cylinder axis direction
Part, WvComponent parts of the corresponding pre-coding matrix W in the cylinder axis direction in cylinder aerial array
Or the component part on cylinder bottom surface, WaOr WvFor the first matrix, first matrix is matrix VnOr the matrix VnFor
A part for first matrix or first matrix are by the matrix VnCarry out matrixing acquisition, matrix VnFor
The matrixes of M × 1 and have following form：
Wherein, P=M orM is the matrix VnNumber of lines, M is that integer and M are equal to first matrix
Number of lines or first matrix number of lines half, N1For preset integer, n is integer and 0≤n≤(N1- 1),S is default real number；
If the order of the pre-coding matrix is 1, the matrix WaAnd WvColumn number be 1, and first matrix W1Have
Following form：
Wherein,A1For normalization factor, x is integer, N2For the integer more than 1.
12. according to the devices described in claim 11, which is characterized in that WaAnd WvIn another in addition to first matrix
Matrix is the second matrix, second matrix W2With following form：
Wherein, V is the number of lines that integer and V are equal to second matrix, LtFor intermediate variable matrix, K and N3It is preset whole
Number, t and q are integer, also, the value range of t is 0≤t≤(K-1), and the value range of q is 0≤q≤(N3-1)。
13. device according to claim 11 or 12, which is characterized in that if the order of the pre-coding matrix is greater than or equal to
2, first matrix has following form：
Wherein,
I is that the dimension of unit matrix and the I are M, Wo,nFor the matrixes of M × 1 and the Wo,nThe first row element and matrix VnFirst
Row element is identical, the Wo,nThe second row to M row elements be respectively the matrix VnThe second row to M row elements opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
14. device according to claim 11 or 12, which is characterized in that described if the order of the pre-coding matrix is equal to 2
First matrix W1With following form：
Wherein, n ' is integer and 1≤n '≤(N1-1)。
15. device according to claim 13, which is characterized in that if the order of the pre-coding matrix is equal to 2, WaAnd WvIn
The second matrix W in addition to first matrix2With following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
16. a kind of device of determining pre-coding matrix, which is characterized in that including：
Sending module, for sending reference signal to user equipment (UE)；
Receiving module receives the pre-coding matrix that the reference signal that the UE is sent according to the sending module is sent and refers to
Show；
Determining module, the pre-coding matrix instruction for being received according to the receiving module, determines pre-coding matrix；
Wherein, the pre-coding matrix W is matrix WaAnd matrix WvKronecker productWaCorrespondence is described pre-
Component parts of the encoder matrix W on the cylinder bottom surface in cylinder aerial array or the group in cylinder axis direction
At part, WvComposition portions of the corresponding pre-coding matrix W in the cylinder axis direction in cylinder aerial array
Point or cylinder bottom surface on component part, WaOr WvFor the first matrix, first matrix is matrix VnOr the matrix Vn
It is by the matrix V for a part for first matrix or first matrixnCarry out matrixing acquisition, matrix Vn
For the matrixes of M × 1 and there is following form：
Wherein, P=M orM is the matrix VnNumber of lines, M is that integer and M are equal to first matrix
Number of lines or first matrix number of lines half, N1For preset integer, n is integer and 0≤n≤(N1- 1),S is default real number；
If the order of the pre-coding matrix is 1, the matrix WaAnd WvColumn number be 1, and first matrix W1Have
Following form：
Wherein,A1For normalization factor, x is integer, N2For the integer more than 1.
17. device according to claim 16, which is characterized in that WaAnd WvIn another in addition to first matrix
Matrix is the second matrix, second matrix W2With following form：
Wherein, V is the number of lines that integer and V are equal to second matrix, LtFor intermediate variable matrix, K and N3It is preset whole
Number, t and q are integer, also, the value range of t is 0≤t≤(K-1), and the value range of q is 0≤q≤(N3-1)。
18. device according to claim 16 or 17, which is characterized in that if the order of the pre-coding matrix is greater than or equal to
2, first matrix has following form：
Wherein,
I is that the dimension of unit matrix and the I are M, Wo,nFor the matrixes of M × 1 and the Wo,nThe first row element and matrix VnFirst
Row element is identical, the Wo,nThe second row to M row elements be respectively the matrix VnThe second row to M row elements opposite number,It indicates to matrix Wo,nCarry out conjugate transposition operation.
19. device according to claim 16 or 17, which is characterized in that described if the order of the pre-coding matrix is equal to 2
First matrix W1With following form：
Wherein, n ' is integer and 0≤n '≤(N1-1)。
20. device according to claim 18, which is characterized in that if the order of the pre-coding matrix is equal to 2, WaAnd WvIn
The second matrix W in addition to first matrix2With following form：
Wherein, t and t ' is integer and the number of lines that 1≤t, t '≤(K-1), V are second matrix.
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| CN101969366A (en) * | 2010-09-26 | 2011-02-09 | 华中科技大学 | Pre-coding method for MIMO system of 8 transmitting antennas |
| CN102273091A (en) * | 2008-11-03 | 2011-12-07 | 爱立信电话股份有限公司 | Method for transmission of reference signals and determination of precoding matrices for multi-antenna transmission |
| CN103621000A (en) * | 2012-06-14 | 2014-03-05 | 华为技术有限公司 | Method, user equipment, and base station evolved node for determining precoding matrix indicator |
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| CN102546123A (en) * | 2010-12-15 | 2012-07-04 | 株式会社Ntt都科摩 | Uplink precoding method and base station |
| CN102291212B (en) * | 2011-08-12 | 2014-06-18 | 电信科学技术研究院 | Feedback method and device of channel state information |
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| CN101969366A (en) * | 2010-09-26 | 2011-02-09 | 华中科技大学 | Pre-coding method for MIMO system of 8 transmitting antennas |
| CN103621000A (en) * | 2012-06-14 | 2014-03-05 | 华为技术有限公司 | Method, user equipment, and base station evolved node for determining precoding matrix indicator |
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