CN102291210B - A kind of method and device for generating pre-coding matrix - Google Patents
A kind of method and device for generating pre-coding matrix Download PDFInfo
- Publication number
- CN102291210B CN102291210B CN201110225546.3A CN201110225546A CN102291210B CN 102291210 B CN102291210 B CN 102291210B CN 201110225546 A CN201110225546 A CN 201110225546A CN 102291210 B CN102291210 B CN 102291210B
- Authority
- CN
- China
- Prior art keywords
- interference
- matrix
- base station
- index value
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of method for generating pre-coding matrix, including：Base station quantifies index value using signal quantization index value and interference and judges whether to need to adjust pre-coding matrix, if it is desired, then base station calculates pre-coding matrix using the quantized value of interference noise sum.The present invention further simultaneously discloses a kind of device for generating pre-coding matrix, it can make to be in coordinate multipoint (CoMP using the present invention, Coordinated Multi Point) transmission state cell, suppress to adjacent area interference, reduce target UE (UE, Uesr Equipment) interference noise and and ensure this cell target UE reception signal quality.
Description
Technical field
The present invention relates to the coordinate multipoint in GSM (CoMP, Coordinated Multi-Point) transmission
Technology, more particularly to a kind of method and device for generating pre-coding matrix.
Background technology
IMT-Advanced (IMT-Advanced) is forth generation communication system (4G) standard, IMT-Advanced
Higher requirement is proposed to the performance of system, especially system spectrum utilization rate has higher requirement.IMT-Advanced leads to
Limitation of the unicast to spectrum efficiency can just be broken through using CoMP technologies by crossing, and by the cooperation of minizone base station, be suppressed small
The interference of section user equipment (UE, User Equipment), so as to improve UE Signal to Interference plus Noise Ratio (SINR,
Signal Interference Noise Rate), and then the lifting system availability of frequency spectrum.Wherein, the dry of minizone UE is suppressed
Disturb is realized by using precoding technique.
Precoding technique is that base station is pre-processed to improve the skill of systematic function by using pre-coding matrix to signal
Art.Generation pre-coding matrix method be：When arbitrary cells are CoMP transmission state, UE is according to channel state information reference signals
After the state of (CSI-RS, Channel State Indication-Reference Signal) measurement channel, by semaphore
The index value obtained after change reports base station, and base station is converted into signal phasor matrix according to the index value received, then by signal
It is pre-coding matrix that gained matrix, which is normalized, in vector matrix；In addition, when the UE of this cell caused by adjacent area to disturbing
When big, base station is adjusted when pre-coding matrix is calculated using interference of this cell UE to adjacent area to signal phasor matrix
It is whole, then the signal phasor matrix after adjustment is normalized to obtain final pre-coding matrix.It can be seen that by using precoding skill
Art allows this cell target UE's while interference of the UE in CoMP transmission state cell to adjacent area is inhibited
It is as far as possible big to receive energy.
But the method for above-mentioned generation pre-coding matrix, do not account for this cell target UE interference noise and, thus
It is possible to while suppressing to disturb adjacent area, this cell target UE due to the influence by larger interference noise sum is entered
And have influence on this cell target UE demodulation ability.
It can be seen that the method for existing generation pre-coding matrix only accounts for suppressing to disturb adjacent area at present, it is impossible in cell
During in CoMP transmission state, meet to suppress to adjacent area interference, reduce interference noise suffered by target UE and and ensure this cell
Target UE reception signal quality.
The content of the invention
In view of this, it is an object of the invention to provide a kind of method and device for generating pre-coding matrix, make to be in
The cell of CoMP transmission state, suppress to adjacent area interference, reduce target UE interference noise and and ensure the target UE of this cell
Reception signal quality.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
The invention provides a kind of method for generating pre-coding matrix, this method includes：
Quantify index value using signal quantization index value and interference to judge whether to need to adjust pre-coding matrix, if needed
Will, then calculate pre-coding matrix using the quantized value of interference noise sum.
In such scheme, before the quantized value using interference noise sum calculates pre-coding matrix, this method also includes：
Signal phasor matrix is adjusted using the quantized value of the target UE UE interference noise sums reported.
In such scheme, the adjustment signal phasor matrix is：Utilize the quantized value and zero interference square of interference noise sum
Battle array calculates the zero interference matrix after adjustment, recycles the zero interference adjustment of matrix signal phasor matrix after adjustment.
It is described to judge whether to need to adjust precoding using signal quantization index value and interference quantization index in such scheme
Before matrix, this method also includes：
Base station notifies the UE in CoMP cell to start measurement signal quality when coordinate multipoint CoMP cell is opened；
After UE measurements in CoMP cell show that signal quantization index value, interference quantify index value and the quantized value of interference noise sum, UE
The result measured is written as metrical information and reports base station.
In such scheme, the result measured is written as metrical information and reports base station including by the UE：UE is measured first
Change interference noise and and store, and by the interference noise of acquisition and quantized value and last stored interference noise and quantized value
It is compared, if the two quantifies difference more than thresholding is reported, signal quantization index value, interference is quantified into index value and interference is made an uproar
The quantized value of sound sum is written as metrical information and reports base station.
Present invention also offers a kind of device for generating pre-coding matrix, it is characterised in that the device includes：Base station controls
Module, base station computing module and base station comparison module；Wherein,
Base station comparison module, judge whether to need adjustment pre- for quantifying index value using signal quantization index value and interference
Encoder matrix, it will determine that result is sent to base station control module；
Base station control module, the judged result sent for receiving base station comparison module, if it is judged that to need to adjust
It is whole, then the instruction of pre-coding matrix is sent using interference noise and calculated to base station computing module；
Base station computing module, the instruction sent for receiving base station control module, calculate pre-coding matrix.
In such scheme, the base station computing module, specifically for the quantized value and zero interference using interference noise sum
The zero interference matrix that matrix computations go out after adjustment, recycle the zero interference adjustment of matrix signal phasor matrix after adjustment.
In such scheme, described device further comprises：UE measurement modules and UE transceiver modules；Wherein,
UE measurement modules, for measurement signal quality, measurement is then drawn into signal quantization index value, interference quantization index
The quantized value of value and interference noise sum is written as metrical information and is sent to UE transceiver modules；
UE transceiver modules, the metrical information sent for receiving UE measurement modules.
In such scheme, the base station control module, it is additionally operable to when CoMP cell is opened into CoMP cell
UE transceiver modules send the notice for starting measurement signal quality；
Accordingly, the UE transceiver modules, it is additionally operable to receive the beginning measurement signal quality that base station control module is sent
Notice, then UE measurement modules are notified to start measurement signal quality；
The UE measurement modules, it is additionally operable to receive the notice for the beginning measurement signal quality that UE transceiver modules are sent.
In such scheme, the UE measurement modules, specifically for first quantify interference noise and and store, and by the dry of acquisition
Disturb noise and quantized value and last stored interference noise and quantized value compared with, if the two difference, which exceedes, reports door
Limit, the then quantized value that signal quantization index value, interference are quantified to index value and interference noise sum are written as metrical information.
In such scheme, the base station control module, base station computing module and base station comparison module are located at base station；The UE
Measurement module and UE transceiver modules are located at UE.
The method and device of generation pre-coding matrix provided by the present invention, has the following advantages that and feature：In cell
During into CoMP transmission state, base station is calculated pre-coding matrix according to the state of target UE interference noise sum, is made most
Throughout one's life into pre-coding matrix can suppress to adjacent area interference, reduce target UE interference noise and and ensure the target of this cell
The quality of UE reception signal.
Brief description of the drawings
Fig. 1 is the method flow schematic diagram of present invention generation pre-coding matrix；
Fig. 2 is the apparatus structure schematic diagram of present invention generation pre-coding matrix.
Embodiment
The present invention basic thought be：Base station quantifies index value using signal quantization index value and interference and judges whether to need
Adjust pre-coding matrix, if it is desired, then base station calculates pre-coding matrix using the quantized value of interference noise sum.
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further described in more detail.
The method of generation pre-coding matrix proposed by the present invention is as shown in figure 1, comprise the following steps：
Step 101：The metrical information that base station real-time reception target UE is reported and the interference quantization index from each adjacent area
Value；
Here, the target UE refers to any one UE in CoMP cell；
With target UE with carrier frequency in the neighbor cell of cell where the interference of the adjacent area quantifies index value feeling the pulse with the finger-tip mark UE
The interference that all UE measurements are drawn quantifies index value；
The metrical information, including：Signal quantization index value, interference quantization index and interference noise and quantized value；
Wherein, the signal quantization index, it is：UE quantifies to be indexed after measuring the state of channel according to CSI-RS,
Specific implementation is prior art, is not repeated here；The interference quantization index, it is：Each adjacent area that target UE is measured
Index value is obtained to the quantization that progress is disturbed caused by target UE, target UE there are multiple adjacent areas, then multiple interference be present and quantify rope
Draw value, distinguishing each interference using the numbering of adjacent area quantifies index value, and the interference quantization index that target UE reports base station includes：
The identification number of cell, the identification number of adjacent area and interference quantify index value etc. where target UE；The interference noise and, be：Target
All interference from environment that UE measures according to cell reference signals (CRS, Cell Reference Signal) and
The sum of noise, specific implementation are prior art, are not repeated here, and the quantized value of interference noise sum quantifies what is obtained for UE
As a result；
The adjacent area, same base station or the base station of different physical locations can be in from cell where target UE；
When cell where adjacent area and target UE is managed by same base, interference, which quantifies index value, to be transmitted in inside of base station,
For example the interference in the metrical information record of adjacent area quantifies index value and stored into the information record of cell where target UE, works as neighbour
When cell where area and target UE is not same base station, it is necessary to by interact extraction interference quantization in the information obtained between base station
Index value.
Step 102：Base station quantifies index value using signal quantization index value and interference and judges whether to need to adjust precoding
Matrix, step 103 is performed if necessary, otherwise perform step 104；
Step 102 is specially：Base station first extracts the interference from each adjacent area and quantifies index value, quantifies index value using interference
Interference vector matrix is determined, all obtained interference vector matrixes are superimposed to obtain interference matrix, then calls orthogonal calculation journey
Sequence calculates the zero interference matrix orthogonal with interference matrix, then extracts the signal quantization index in the metrical information of target UE transmissions
Value determines signal phasor matrix, calculates the similarity between signal phasor matrix and zero interference matrix, and last base station judges to calculate
Whether the similarity drawn exceedes adjustment thresholding, if it exceeds then needing to adjust pre-coding matrix, performs step 103, otherwise holds
Row step 104；
It is described to determine that the method for interference vector is using interference quantization index value：By being stored in base station in 3GPP agreements
Corresponding index value converting form realizes that concrete methods of realizing is prior art, and the interference that base station is fed back according to target UE quantifies
Index value, by tabling look-up to obtain interference vector um, recycle formulaInterference arrow can be obtained by calculating
Moment matrix；The interference vector matrix is superimposed to obtain interference matrix, is x × n matrix, and x is that feedback interference channel indexes are characterized
The superposition number of plies of characteristic vector conjugate transposition, related to the quantity of interference quantization index value and the transmission number of plies in practice, n is to connect
Receive antenna amount；
The extraction signal quantization index value determines that the method for signal phasor matrix is：By being stored in 3GPP associations in base station
Corresponding index value converting form realizes that signal quantization index value is converted to signal phasor in view, and concrete methods of realizing is existing skill
Art, the signal quantization index value that base station is fed back according to target UE, signal phasor u can determine that according to converting formn, then pass throughCalculate and can obtain signal phasor matrix,
Wherein, WtempFor n × m signal phasor matrix, n is reception antenna quantity, and m is the transmission number of plies, and I is n × n list
Bit matrix, its elements in a main diagonal are 1, and remaining element is 0；
The orthogonal calculation program, can be by using singular value decomposition (SVD, Singular Value
Decomposition) realize, be specially：Tri- matrixes of U, D and V, U squares are obtained after conjugate transposition progress SVD to interference matrix
It is the singular vector matrix of the conjugate transposition of interference matrix respectively in battle array and V matrixes, D matrix is the conjugate transposition of interference matrix
Singular value matrix, from the diagonal entry of D matrix extraction less than extraction thresholding value, then from V matrixes with D matrix respective column
It is determined that it is zero interference matrix that vector, which forms new matrix,；The zero interference matrix column number is less than transmitting antenna number, line number etc.
In transmitting antenna number；Extraction thresholding is to be set according to actual conditions, by largely emulating the result of acquisition；
Similarity between the signal phasor matrix and zero interference matrix can be real by calculating the inner product of two matrixes
Existing, calculation formula is：Abs=sum (Wtemp_ i- ＜ Wtemp_ i, zeroSpace_i ＞ * zeroSpace_i),
Wherein, abs is similarity, and zeroSpace is zero interference matrix, is n × y matrix, n is transmitting antenna number, and y is small
In transmitting antenna number；
The adjustment thresholding is sets according to actual conditions, by largely emulating the result of acquisition, if calculated
Similarity between the signal phasor matrix and zero interference matrix that go out exceedes adjustment thresholding, then pre-coding matrix needs to be adjusted
It is whole, otherwise it need not adjust.
Step 103：Base station adjusts signal phasor matrix using the quantized value of the target UE interference noise sums reported；
Here, the adjustment signal phasor matrix refers to：Rotation calculation procedure is called in base station, utilizes the quantization of interference noise sum
The zero interference matrix that value and zero interference matrix computations go out after adjustment, base station recalls projection calculation procedure, after adjustment
Zero interference matrix adjusts to signal phasor matrix；
Wherein, the rotation calculation procedure can have a variety of implementation methods, for example can be calculated by following formula：
N × n matrix R is constructed,
Remaining element in matrix R is Rst=δst,
ZeroSpace=R × zeroSpace is finally given,
Wherein, n is the quantity of transmitting antenna；I and j determines according to zero interference matrix column number, and i ≠ j, such as, work as hair
When penetrating antenna number n=4, zero interference matrix can have 3 row, then i, j vectorial to first can take 2 and 3 respectively, for second
Vectorial i, j can be respectively 3 and 4, and 2 and 4 can be taken respectively for the 3rd vectorial i, j；IN1 is the quantization of interference noise sum
Value, its span are 1 to M by default, and M is the maximum quantization value of interference noise sum, and abs is to be calculated by step 102
Angle between obtained signal phasor matrix and zero interference matrix, zeroSpace are zero interference matrix；
The projection calculation procedure can have a variety of implementation methods, for example can pass through signal phasor
Each row inner product and realization, calculation formula are in zero interference matrix after each row and adjustment in matrixFor WtempProject to the row of the xth after zeroSpace
Element, zeroSpace are n × y matrix, and n is transmitting antenna number, and y is less than transmitting antenna number.
Step 104：Base station draws pre-coding matrix using signal phasor matrix computations；
Step 104 further comprises：After base station draws pre-coding matrix using signal phasor matrix computations, prelisted using this
Code matrix carries out precoding to the business datum that will be sent to target UE, then the business datum data after precoding are sent to
Target UE；
Here, the calculating refers to base station calling pre-coding matrix calculation procedure and calculated, and specific formula for calculation is：
Wherein, W is the pre-coding matrix finally given, WtempFor n × m signal phasor matrix, n is reception antenna number
Amount, m are the transmission number of plies, and norm () is to seek two norms.
In addition, also including the step of base station notice target UE carries out signal measurement before step 101, specifically include：
Step a：Base station notifies the UE in CoMP cell to start measurement signal quality when CoMP cell is opened；
Step b：UE measurements in CoMP cell draw signal quantization index value, interference quantify index value and interference noise and
Quantized value after, the result measured is written as metrical information and reports base station；
Here, the metrical information reports base station and referred to：UE quantify first interference noise and and store, and by the dry of acquisition
Disturb noise and quantized value and last stored interference noise and quantized value compared with, if the two difference, which exceedes, reports door
Limit, then the quantized value of signal quantization index value, interference quantization index value and interference noise sum is written as metrical information and reported
Base station, otherwise do not send；Wherein, the threshold value for reporting thresholding to be set according to actual conditions.
Step c：After base station receives metrical information, interference quantization index is sent to the adjacent area for the cell for opening CoMP states
Value；
Here, the adjacent area to the cell for opening CoMP states sends interference quantization index value, refers to：Base station provides according to it
The adjacent area that can be had an impact to the cell for opening CoMP states that source control record is found, can have multiple neighbours according to actual conditions
Area, when adjacent area is in the management of same base station with the cell in CoMP states, base station can be by that will disturb quantization index
Value is done repeatedly to preserve and realized, when adjacent area is managed with the cell in CoMP states by different base station, base station is according to resource management
The identification number of the base station residing for adjacent area in record, interference is quantified into index value and is dealt into the base station.
It can be seen that be can be realized as by the above method when target UE interference noise is with changing greatly, generation is pre-
Added during encoder matrix interference noise and, so as to accomplish to suppress to adjacent area interference, reduce target UE interference noise and and ensure
The quality of the target UE of this cell reception signal.
In order to complete the above method, as shown in Fig. 2 present invention also offers the device of generation pre-coding matrix, including：Base
Stand control module 21, base station computing module 22 and base station comparison module 23；Wherein,
Base station comparison module 23, judge whether to need to adjust for quantifying index value using signal quantization index value and interference
Pre-coding matrix, it will determine that result is sent to base station control module 21；
Base station control module 21, the judged result sent for receiving base station comparison module 23, if it is judged that to need
Adjust, then send using interference noise and calculate the instruction of pre-coding matrix to base station computing module 22, otherwise counted to base station
Calculate module 22 and send the instruction for not utilizing interference noise and calculating pre-coding matrix；
Base station computing module 22, the computations sent for receiving base station control module 21, calculate pre-coding matrix.
It is described, base station control module 21, it is additionally operable to metrical information that real-time reception target UE reports and from each adjacent area
Interference quantify index value.
The base station control module 21, the signal quantization index value being additionally operable in the metrical information that sends target UE and
The interference that each adjacent area is sent quantifies index value and is sent to base station comparison module 23；Accordingly, the base station comparison module 23, is also used
Quantify index value and signal quantization index value in the interference that reception base station control module 21 is sent.
The base station comparison module 23, base station is sent to specifically for signal quantization index value and interference are quantified into index value
Computing module 22；Accordingly, the base station computing module 22, it is additionally operable to receive the signal quantization rope that base station comparison module 22 is sent
Draw value and interference quantifies index value, signal phasor matrix is calculated after determining signal phasor using signal quantization index value, profit
Quantify index value with interference and determine interference vector matrix, then all obtained interference vector matrixes are overlapped to obtain and disturb square
Battle array, then call orthogonal calculation program calculate the zero interference matrix orthogonal with interference matrix, then calculate signal phasor matrix and
Similarity between zero interference matrix；
Here, SVD can be used when the orthogonal calculation program is realized, is specially：The conjugate transposition of interference matrix is entered
Tri- matrixes of U, D and V are obtained after row SVD, are the singular vector square of the conjugate transposition of interference matrix respectively in U matrixes and V matrixes
Battle array, D matrix is the singular value matrix of the conjugate transposition of interference matrix, and extraction is less than extraction door from the diagonal entry of D matrix
The value of limit, then it is zero interference matrix to determine that vector forms new matrix with D matrix respective column from V matrixes；The zero interference square
The columns of battle array is less than transmitting antenna number, and line number is equal to transmitting antenna number；It is according to actual conditions, by substantial amounts of to extract thresholding
The result obtained is emulated to set；
The similarity can be obtained by calculating the inner product of two matrixes, and calculation formula is：Abs=sum (Wtemp_i-
＜ Wtemp_ i, zeroSpace_i ＞ * zeroSpace_i),
Wherein, abs is similarity, and zeroSpace is zero interference matrix, is n × y matrix, n is transmitting antenna number, and y is small
In transmitting antenna number.
The base station computing module 22, specifically for the similarity being calculated is issued into base station comparison module 23；Accordingly
, the base station comparison module 23, specifically for receiving the similarity sent of base station computing module 22, by judging that similarity is
It is no to exceed adjustment thresholding to determine the need for adjusting pre-coding matrix；
Wherein, the adjustment thresholding is to be set according to actual conditions, by largely emulating the result of acquisition.
The base station control module 21, writes specifically for the quantized value using interference noise sum and utilizes interference noise and meter
The instruction of pre-coding matrix is calculated, sends an instruction to base station computing module 22；Accordingly, the base station computing module 22, specifically
After the instruction using interference noise and calculating pre-coding matrix sent for receiving base station control module 21, rotation is called to calculate
Program, the zero interference matrix gone out using the quantized value and zero interference matrix computations of interference noise sum after adjustment, recalls projection
Zero interference adjustment of matrix signal phasor matrix of the calculation procedure by signal phasor matrix projection to after adjusting, finally calls precoding
Matrix computations program, is calculated pre-coding matrix；
Wherein, the rotation calculation procedure can have a variety of implementation methods, for example can be calculated by following formula：
N × n matrix R is constructed,
Remaining element in matrix R is Rst=δst,
ZeroSpace=R × zeroSpace is finally given,
Wherein, n is the quantity of transmitting antenna；I and j determines according to zero interference matrix column number, and i ≠ j, such as, work as hair
When penetrating antenna number n=4, zero interference matrix can have 3 row, then i, j vectorial to first can take 2 and 3 respectively, for second
Vectorial i, j can be respectively 3 and 4, and 2 and 4 can be taken respectively for the 3rd vectorial i, j；IN1 is the quantization of interference noise sum
Value, its span are 1 to M by default, and M is the maximum quantization value of interference noise sum, and abs is signal phasor matrix and zero
Angle between interference matrix, zeroSpace are zero interference matrix；
The projection calculation procedure can have a variety of implementation methods, for example can pass through signal phasor square
Each row inner product and realization, calculation formula are in zero interference matrix after each row and adjustment in battle arrayFor WtempProject to the row of the xth after zeroSpace
Element, zeroSpace are n × y matrix, and n is transmitting antenna number, and y is less than transmitting antenna number；
The calling pre-coding matrix calculation procedure, specific formula for calculation are：
Wherein, W is the pre-coding matrix finally given, WtempFor n × m signal phasor matrix, n is reception antenna number
Amount, m are the transmission number of plies, and norm () is to seek two norms.
The base station control module 21, specifically for writing the instruction for not utilizing interference noise and calculating pre-coding matrix,
Send an instruction to base station computing module 22；Accordingly, the base station computing module 22, specifically for receiving base station control module
After 21 instructions for not utilizing interference noise and calculating pre-coding matrix sent, pre-coding matrix calculation procedure is called, is calculated
Go out pre-coding matrix.
The base station computing module 22, it is additionally operable to pre-coding matrix being sent to base station control module 21；Accordingly, it is described
Base station control module 21, it is additionally operable to receive the pre-coding matrix that base station computing module 22 is sent.
Described device further comprises：UE transceiver modules 24 and UE measurement modules 25；Wherein,
UE measurement modules 25, for measurement signal quality, measurement is then shown that signal quantization index value, interference quantify rope
The quantized value for drawing value and interference noise sum is written as metrical information and is sent to UE transceiver modules 24；
UE transceiver modules 24, the metrical information sent for receiving UE measurement modules 25.
The UE measurement modules 25, specifically for first quantify interference noise and and store, and by the interference noise of acquisition and
Quantized value and last stored interference noise and quantized value compared with, will if the two difference, which exceedes, reports thresholding
Signal quantization index value, interference quantify index value and the quantized value of interference noise sum is written as metrical information, otherwise do not operate；
Wherein, the threshold value for reporting thresholding to be set according to actual conditions.
The base station control module 21, it is additionally operable to the UE transceiver modules into CoMP cell when CoMP cell is opened
24 send the notice for starting measurement signal quality；Accordingly, the UE transceiver modules 24, it is additionally operable to receive base station control module 21
The notice for the beginning measurement signal quality sent, then UE measurement modules 25 are notified to start measurement signal quality；The UE measurements
Module 25, it is additionally operable to receive the notice for the beginning measurement signal quality that UE transceiver modules 24 are sent；
Wherein, the notice for starting measurement signal quality includes：Disturbed caused by measuring reference signals, adjacent area and dry
Disturb the notice of noise and three kinds of parameters.
The base station control module 21, it is additionally operable to send interference quantization index to the adjacent area for the cell for opening CoMP states
Value.
The base station control module 21, it is additionally operable to prelist to the business datum that will be sent using pre-coding matrix
Code, then the business datum data after precoding are sent to UE transceiver modules 24；Accordingly, the UE transceiver modules 24, are also used
Business datum data after the precoding that reception base station control module 21 is sent.
Base station control module 21, base station computing module 22 and base station comparison module 23 in said apparatus are located at base station, UE
Measurement module 25 and UE transceiver modules 24 are located at UE.
It can be seen that using above-mentioned scheme, it is possible to cell carry out CoMP transmission when, when target UE interference noise and
When changing greatly, generate pre-coding matrix when add interference noise and, so as to accomplish suppress to adjacent area interference, reduce target
UE interference noise and and ensure this cell target UE reception signal quality.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (11)
- A kind of 1. method for generating pre-coding matrix, it is characterised in that this method includes：Quantify index value using signal quantization index value and interference to judge whether to need to adjust pre-coding matrix, if it is desired, then Pre-coding matrix is calculated using the quantized value of interference noise sum；Wherein, it is described to judge whether to need to adjust pre-coding matrix, bag using signal quantization index value and interference quantization index value Include：Quantify index value using interference and obtain zero interference matrix, signal phasor matrix is determined according to signal quantization index value, judges to believe Whether the similarity of number vector matrix and zero interference matrix exceedes adjustment thresholding, if needing to adjust pre-coding matrix more than if.
- 2. according to the method for claim 1, it is characterised in that the quantized value using interference noise sum calculates precoding Before matrix, this method also includes：Signal phasor is adjusted using the quantized value of the target UE UE interference noise sums reported Matrix.
- 3. according to the method for claim 2, it is characterised in that it is described adjustment signal phasor matrix be：Utilize interference noise The zero interference matrix that the quantized value and zero interference matrix computations of sum go out after adjustment, recycle the zero interference adjustment of matrix after adjustment Signal phasor matrix.
- 4. according to the method described in claim 1,2 or 3, it is characterised in that described to utilize signal quantization index value and interference volume Before change index judges whether to need to adjust pre-coding matrix, this method also includes：Base station notifies the UE in CoMP cell to start measurement signal quality when coordinate multipoint CoMP cell is opened；CoMP is small After UE measurements in area show that signal quantization index value, interference quantify index value and the quantized value of interference noise sum, UE will be measured The result gone out is written as metrical information and reports base station.
- 5. according to the method for claim 4, it is characterised in that the result measured is written as in metrical information by the UE Offering base station includes：UE quantify first interference noise and and store, and by the interference noise of acquisition and quantized value deposited with last time The quantized value of the interference noise sum of storage is compared, if the two quantify difference exceed report thresholding, by signal quantization index value, Interference quantization index value and the quantized value of interference noise sum are written as metrical information and report base station.
- 6. a kind of device for generating pre-coding matrix, it is characterised in that the device includes：Base station control module, base station calculate mould Block and base station comparison module；Wherein,Base station comparison module, judge whether to need to adjust precoding for quantifying index value using signal quantization index value and interference Matrix, it will determine that result is sent to base station control module；Zero interference matrix is obtained specifically for quantifying index value using interference, signal phasor square is determined according to signal quantization index value Battle array, judges whether the similarity of signal phasor matrix and zero interference matrix exceedes adjustment thresholding, needs to adjust precoding if exceeding Matrix；Base station control module, the judged result sent for receiving base station comparison module, if it is judged that to need to adjust, then The instruction of pre-coding matrix is sent using interference noise and calculated to base station computing module；Base station computing module, the instruction sent for receiving base station control module, calculate pre-coding matrix.
- 7. device according to claim 6, it is characterised in thatThe base station computing module, after going out adjustment specifically for the quantized value using interference noise sum and zero interference matrix computations Zero interference matrix, recycle adjustment after zero interference adjustment of matrix signal phasor matrix.
- 8. the device according to claim 6 or 7, it is characterised in that described device further comprises：UE measurement modules and UE Transceiver module；Wherein,UE measurement modules, for measurement signal quality, then by measurement draw signal quantization index value, interference quantify index value and The quantized value of interference noise sum is written as metrical information and is sent to UE transceiver modules；UE transceiver modules, the metrical information sent for receiving UE measurement modules.
- 9. device according to claim 8, it is characterised in thatThe base station control module, it is additionally operable to the transmission of UE transceiver modules when CoMP cell is opened into CoMP cell and opens The notice of beginning measurement signal quality；Accordingly, the UE transceiver modules, it is additionally operable to receive the notice for the beginning measurement signal quality that base station control module is sent, Then notice UE measurement modules start measurement signal quality；The UE measurement modules, it is additionally operable to receive the notice for the beginning measurement signal quality that UE transceiver modules are sent.
- 10. device according to claim 8, it is characterised in thatThe UE measurement modules, specifically for first quantify interference noise and and store, and by the quantization of the interference noise sum of acquisition The interference noise of value and last stored and quantized value compared with, if the two difference, which exceedes, reports thresholding, by semaphore Change index value, interference quantifies index value and the quantized value of interference noise sum is written as metrical information.
- 11. device according to claim 8, it is characterised in thatThe base station control module, base station computing module and base station comparison module are located at base station；The UE measurement modules and UE transceiver modules are located at UE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110225546.3A CN102291210B (en) | 2011-08-08 | 2011-08-08 | A kind of method and device for generating pre-coding matrix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110225546.3A CN102291210B (en) | 2011-08-08 | 2011-08-08 | A kind of method and device for generating pre-coding matrix |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102291210A CN102291210A (en) | 2011-12-21 |
| CN102291210B true CN102291210B (en) | 2017-12-01 |
Family
ID=45337336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110225546.3A Active CN102291210B (en) | 2011-08-08 | 2011-08-08 | A kind of method and device for generating pre-coding matrix |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102291210B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313299B (en) * | 2012-03-09 | 2017-12-08 | 中兴通讯股份有限公司 | Transmission mode adaptive approach and system |
| CN103326814B (en) * | 2012-03-23 | 2017-12-08 | 中兴通讯股份有限公司 | A kind of adaptive transmission method and system |
| CN103580789B (en) * | 2012-07-30 | 2018-08-10 | 中兴通讯股份有限公司 | Coordinated multipoint transmission recoding processing method, apparatus and system |
| CN103580795B (en) * | 2012-08-03 | 2017-11-07 | 中兴通讯股份有限公司 | The method for precoding and device of a kind of cooperative multicast system |
| KR101988285B1 (en) * | 2012-09-20 | 2019-06-12 | 삼성전자 주식회사 | Method and apparatus for transmitting and receiving channel state information in wireless communication system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101843062A (en) * | 2007-08-13 | 2010-09-22 | 高通股份有限公司 | MIMO transmission with spatial pre-coding |
| CN102026267A (en) * | 2009-09-16 | 2011-04-20 | 华为技术有限公司 | Method and device for feeding back hybrid channel state information, and method and device for processing feedback information |
| CN102122977A (en) * | 2010-01-11 | 2011-07-13 | 电信科学技术研究院 | Method for feeding back CQI (Channel Quality Indicator) information and channel quality estimation, user terminal and base station |
-
2011
- 2011-08-08 CN CN201110225546.3A patent/CN102291210B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101843062A (en) * | 2007-08-13 | 2010-09-22 | 高通股份有限公司 | MIMO transmission with spatial pre-coding |
| CN102026267A (en) * | 2009-09-16 | 2011-04-20 | 华为技术有限公司 | Method and device for feeding back hybrid channel state information, and method and device for processing feedback information |
| CN102122977A (en) * | 2010-01-11 | 2011-07-13 | 电信科学技术研究院 | Method for feeding back CQI (Channel Quality Indicator) information and channel quality estimation, user terminal and base station |
Non-Patent Citations (1)
| Title |
|---|
| LTE系统中MIMO预编码技术研究;张萌;《硕士学位论文》;20100531;第2章-第4章 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102291210A (en) | 2011-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103746779B (en) | A kind of channel condition information measurement, the sending method of reference signal and device | |
| CN105027457B (en) | Determine method, user equipment and the base station of pre-coding matrix instruction | |
| CN102291210B (en) | A kind of method and device for generating pre-coding matrix | |
| CN107888323A (en) | The transmission method and equipment of a kind of channel condition information | |
| CN104579586B (en) | The feedback method and device and method of reseptance and device of channel condition information | |
| CN102957467B (en) | The signal processing method and system of multiple antennas in a kind of downlink system | |
| CN102986269B (en) | A kind of method and apparatus estimating down channel quality | |
| CN105991171B (en) | A kind of three dimensional channel status information determines method and device | |
| CN106411374A (en) | Channel state information feedback method for FD MIMO system and related equipment | |
| CN103475609B (en) | Communication equipment, Base Band Unit and communication means | |
| CN107733595A (en) | Method and apparatus for transmission and the report of channel state information reference signals | |
| CN101931440B (en) | Channel state information acquisition method and device | |
| CN108199754A (en) | A kind of pre-coding matrix determines method and base station | |
| CN106330272A (en) | Precoding matrix indicator (PMI) sending and receiving method, and devices | |
| CN106888062A (en) | CQI estimates, SINR determines method and relevant device | |
| CN104917559B (en) | Pre-coding matrix index measurement apparatus and method | |
| CN106033990A (en) | Channel state information feedback method, channel state information obtaining method and devices | |
| CN105991213A (en) | Codebook determining method and codebook determining device | |
| CN106254050B (en) | Extensive mimo system dynamic pilot allocation method based on large scale information | |
| CN107734538A (en) | The configuration of reference signal, determine method and device, base station, terminal | |
| CN106160938A (en) | The acquisition methods of a kind of channel information and device | |
| CN107896122A (en) | A kind of beam scanning and search and track method and device | |
| CN103095400B (en) | Channel quality instruction measuring method and system, subscriber equipment and base station | |
| CN106330273A (en) | Pre-coding method and device | |
| CN108235421A (en) | Energy efficiency optimization method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |