CN107294887A - Method and apparatus for the data precoding in mimo antenna array - Google Patents
Method and apparatus for the data precoding in mimo antenna array Download PDFInfo
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- CN107294887A CN107294887A CN201610200896.7A CN201610200896A CN107294887A CN 107294887 A CN107294887 A CN 107294887A CN 201610200896 A CN201610200896 A CN 201610200896A CN 107294887 A CN107294887 A CN 107294887A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03343—Arrangements at the transmitter end
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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
- H04B7/0413—MIMO systems
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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
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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Abstract
The various embodiments of the disclosure provide a kind of method and apparatus that in multiple-input and multiple-output mimo antenna array data are carried out with precoding.This method includes：In response to receiving the first CSI RS signals that base station is sent using wave beam of the mimo antenna array through non-precoded at user equipment, the first long-term broad-band channel characteristic is sent to base station, beam forming is carried out to wave beam so that mimo antenna array is performed；The 2nd CSI RS signals sent from wave beam of the base station reception after beamformed；In response to receiving the 2nd CSI RS signals, the second long-term broad-band channel characteristic is sent to base station；The 3rd CSI RS signals sent from wave beam of the base station reception after beamformed；And in response to receiving the 3rd CSI RS signals, short-term narrow-band characteristic information is sent to base station, so that base station performs the precoding to data.
Description
Technical field
The various embodiments of the disclosure are related to right in multiple-input and multiple-output mimo antenna array
The method and apparatus that data carry out precoding.
Background technology
In the transmission of current channel state information reference signals (CSI-RS), disclose
CSI-RS based on non-precoded, the CSI-RS (k of beam forming>1), and wave beam into
The transmission method and channel condition information (CSI) of the CSI-RS (k=1) of shape CSI-RS
Method for reporting, wherein k represented for the CSI-RS in each CSI-RS.
, can be by a kind of base station selected above-mentioned scheme simultaneously in single CSI-RA transmission plans
By radio resource control (RRC) signaling with very long periodic notification UE.At these
In scheme, the CSI-RS schemes of non-precoded are the most flexible, but this scheme for long-term and
Short-term CSI-RS reports need higher CSI-RS expenses.The specific beam forming of cell
CSI-RS (k=1) is due to limited CSI-RS so that with relatively low in vertical direction
Vertical previous encoded resolution.And the specific beam forming CSI-RS (k of UE>1) scheme exists
Long-term CSI is obtained in FDD (FDD) system and unreliable.
The content of the invention
In order to solve it is above-mentioned and other it is potential the problem of, embodiment of the disclosure provide be used for
The method and apparatus of data precoding in mimo antenna array.
The first aspect of the disclosure provides one kind in multiple-input and multiple-output mimo antenna array
In to data carry out precoding method, including：In response to receiving base station at user equipment
The first CSI-RS sent using wave beam of the mimo antenna array through non-precoded, to
Base station sends the first long-term broad-band channel characteristic, so that mimo antenna array is performed to wave beam
Carry out beam forming；The 2nd CSI-RS sent from wave beam of the base station reception after beamformed
Signal；In response to receiving the second CSI-RS, send the second long-term broadband to base station and believe
Road characteristic；The 3rd CSI-RS sent from wave beam of the base station reception after beamformed；
And in response to receiving the 3rd CSI-RS, short-term narrow-band characteristic information is sent to base station,
So that base station performs the precoding to data.
The second aspect of the disclosure provides one kind in multiple-input and multiple-output mimo antenna array
In to data carry out precoding method, including：In response to receiving base station profit at user equipment
Multiple 2nd CSI-RS sent with multiple wave beams of the mimo antenna array after beamformed
Signal, the first long-term broad-band channel characteristic and the second long-term broad-band channel characteristic are sent to base station,
So that mimo antenna array selects wave beam from multiple wave beams；Received from base station through selected
Wave beam send the 3rd CSI-RS；In response to receiving the 3rd CSI-RS, to
Base station sends short-term narrow-band characteristic information, so that base station performs the precoding to data.
The third aspect of the disclosure provides one kind in multiple-input and multiple-output mimo antenna array
In to data carry out precoding method, including：In base station MIMO is utilized to user equipment
Wave beam of the aerial array through non-precoded sends the first CSI-RS；Received from user equipment
First long-term broad-band channel characteristic；Wave beam is carried out to wave beam based on the first long-term broad-band channel characteristic
Shaping；To user equipment, it is beamformed after wave beam send the second CSI-RS；From
User equipment receives the second long-term broad-band channel characteristic；To user equipment, it is beamformed after
Wave beam sends the 3rd CSI-RS；Short-term narrow-band characteristic is received from user equipment；And base
It is special in the first long-term broad-band channel characteristic, the second long-term broad-band channel characteristic and short-term arrowband
Property, perform the precoding to data.
The fourth aspect of the disclosure provides one kind in multiple-input and multiple-output mimo antenna array
In to data carry out precoding method, including：Base station to user equipment, utilize MIMO
Multiple wave beams after aerial array is beamformed send multiple second CSI-RSs；From user
Equipment receives the first long-term broad-band channel characteristic and the second long-term broad-band channel characteristic；Based on first
Long-term broad-band channel characteristic and the second long-term broad-band channel characteristic, wave beam is selected from multiple wave beams；
The 3rd CSI-RS is sent to user equipment, using selected wave beam；From user equipment
Receive short-term narrow band channel characteristic；Based on the first long-term broad-band channel characteristic, the second long-term broadband
The characteristic of channel and short-term narrow-band characteristic, perform the precoding to data.
5th aspect of the disclosure provides a kind of user equipment, including controller and transceiver,
Controller is configured as the method for controlling transceiver to perform disclosure first aspect.
6th aspect of the disclosure provides a kind of user equipment, including controller and transceiver,
Controller is configured as controlling transceiver to perform the method described in disclosure second aspect.
7th aspect of the disclosure provides a kind of base station, including：Multiple-input and multiple-output MIMO
Aerial array；Transceiver；And controller, controller is configured as making base station to perform the disclosure
Method described in the third aspect.
The eighth aspect of the disclosure provides a kind of base station, including：Multiple-input and multiple-output MIMO
Aerial array；Transceiver；And controller, controller is configured as making base station to perform the disclosure
Method described in fourth aspect.
It should be appreciated that Summary be not intended to identify embodiment of the disclosure key or
Key character, is also not intended to be used to limit the scope of the present disclosure.The further feature of the disclosure will be logical
Following description is crossed to be easy to understand.
Brief description of the drawings
By the description to the example embodiment in accompanying drawing, the feature and advantage of the disclosure are readily able to
Understand, in the accompanying drawings：
Fig. 1 shows being used in multiple-input and multiple-output MIMO days in accordance with an embodiment of the present disclosure
In linear array data are carried out with the schematic system diagram of precoding；
Fig. 2 is shown according to the embodiment of the present disclosure in UE sides in multiple-input and multiple-output
In mimo antenna array data are carried out with the flow chart of the method for precoding；
Fig. 3 is shown to be used in multiple-input and multiple-output according to the embodiment of the present disclosure in base station side
In mimo antenna array data are carried out with the flow chart of the method for precoding；
Fig. 4 is shown according to another embodiment of the disclosure in UE sides for how defeated in multi input
Go out in mimo antenna array to carry out data the flow chart of the method for precoding；
Fig. 5 is shown according to another embodiment of the disclosure in base station side for how defeated in multi input
Go out in mimo antenna array to carry out data the flow chart of the method for precoding；
Fig. 6 shows the block diagram of the user equipment according to the embodiment of the present disclosure；And
Fig. 7 shows the block diagram of the base station according to the embodiment of the present disclosure.
In all of the figs, same or similar reference numeral represents same or similar element.
Embodiment
The principle of the disclosure is described referring now to some example embodiments.It is appreciated that these
Embodiment merely for illustrate and help it will be understood by those skilled in the art that with the embodiment disclosure
Purpose and describe, rather than suggestion scope of this disclosure any limitation.Described here
Disclosure can be implemented in the various modes outside mode described below.
As described herein, term " comprising " and its various variants are construed as open
Term, it means that " including but is not limited to ".Term "based" is construed as " extremely
It is at least partly based on ".Term " one embodiment " is construed as " at least one implementation
Example ".Term " another embodiment " is construed as " at least one other embodiment ".
Term " user equipment " (UE) is any equipment for referring to communicate with BS.As
Example, UE can include terminal, mobile terminal (MT), subscriber stations (SS), portable
Subscriber stations (PSS), mobile station (MS) or access terminal (AT)." base station " (BS)
Can represent node B (NodeB or NB), enode b (eNodeB or base station),
Remote radio unit (RRU), radio-frequency maser (RH), far end radio frequency head (RRH),
Repeater, low power nodes, femto base station, femto base station etc..
The various embodiments of the disclosure, which are directed to, to be designed a kind of new mechanism to realize mixed type
CSI-RS transmission.Fig. 1 shows many for the multi input in the various embodiments of the disclosure
Export the schematic system diagram that in mimo antenna array data are carried out with precoding.Such as Fig. 1
It is shown, system 100 include base station 130, mimo antenna 110 mounted thereto and
UE 120.As shown in figure 1, mimo antenna transmits data using wave beam 140 to UE 120
And CSI-RS.Wave beam can be the wave beam with certain orientation (for example, wave beam
Wave beam after shaping) or wave beam (for example, wave beam of non-precoded) without omni-directional.
In the communication system of such as LTE system, 2D mimo antenna arrays are had studied
Transmission.For example, conventional antenna array is horizontally disposed to form wave beam in the horizontal plane.3D
Mimo channel is propagated modeling and is also suggested in nearest 3GPP meetings, and is ground
Study carefully and propose corresponding scheme to obtain possibility from 3D mimo channels.
In order to obtain more possible gains, 2D active antenna array from 3D wireless channel
(AAA) system is disposed for vertically and horizontally forming 3D wave beams.Support
The corresponding solution of non-precoded CSI-RS transmission and the CSI-RS transmission of beam forming exists
Come into question and received in 3GPP RAN1 meetings.Especially, the CSI-RS of beam forming
Transmission plan is in ardent discussion, because some transmission antenna ports can be shared
One CSI-RS port resource is to reduce CSI-RS transmission expense.In this case, two kinds
Solution is by by included in standard from now on, i.e. k=1 situation (cell is specific)
And k>The situation of 1 (UE is specific), wherein k is represented for the CSI-RS in each CSI-RS
Resource.
Compared with non-coding CSI-RS mechanism, the main advantage based on beam forming CSI-RS
It is NZP CSI-RS high efficiency and by the way that the different channels characteristic of spatial domain is taken into account
The feedback resources come are utilized, therefore, it is possible to support larger 2D active antenna array.This advantage
Operated and obtained based on channel virtual (channel virtualization), it passes through to CSI-RS
Beam forming is performed in resource initial high-dimensional propagation channel is transformed into some low dimensionals.
Fig. 2 is shown to be used in multiple-input and multiple-output according to the embodiment of the present disclosure in UE sides
In mimo antenna array data are carried out with the method 200 of precoding.Specifically, method 200
Describe based on the mixed of the non-precoded CSI-RS and specific beamformed CSI-RS of cell
Close the scheme of transmission.
In step 202, in response at UE 120, receiving base station and utilizing mimo antenna
The first CSI-RS that wave beam of the array through non-precoded is sent, sends first to base station and grows
Phase broad-band channel characteristic.As described below, base station 130 can utilize the first long-term broadband letter
Road characteristic, beam forming is carried out to the wave beam of mimo antenna array.
According to one embodiment of the disclosure, the first long-term broad-band channel characteristic is vertically oriented
Long-term channel characteristics.In such embodiments, in step 202, can be determined first
One long-term broad-band channel characteristic.Then, selected from predefined vertical code book and first is long-term
The corresponding vertical pre-coding matrix of broad-band channel characteristic.The vertical pre-coding matrix can be with longer
Cycle be sent to base station.
Next, in step 204, from base station 130 receive it is beamformed after wave beam send
The second CSI-RS.As response, in step 206, UE 120 is sent out to base station 130
Send the second long-term broad-band channel characteristic.In certain embodiments, the second long-term broad-band channel characteristic
The long-term channel characteristics being horizontally oriented.In such embodiments, can be with step 206
The second long-term broad-band channel characteristic is determined first, the then selection and second from the code book becheduleding for
The corresponding long-term horizontal pre-coding matrix of broad-band channel characteristic, and being grown this with long period for a long time
Phase, horizontal pre-coding matrix was sent to base station.
Then, in step 208, the 3rd sent from wave beam of the base station reception after beamformed
CSI-RS.As response, in step 210, UE 120 is sent in short term to base station 130
Narrow-band characteristic information.As described below, base station 130 is performed using the short-term narrow-band characteristic information
Precoding to data.
In certain embodiments, the short-term channel behaviors that short-term narrow band channel characteristic is horizontally oriented.
In such embodiments, in step 210, short-term narrow band channel characteristic can be determined first,
Short-term water corresponding with short-term narrow band channel characteristic is then selected from predefined horizontal code book
Flat pre-coding matrix, is then sent to base station with the short cycle by short-term level pre-coding matrix.
It may be noted that base station and UE can for example share predefined vertical code matrix code book
And for W1 and W2 horizontal code book, or also likely to be present or recent design go out it is single
Precoding matrix indicator (PMI) feedback code book.Need also exist for pointing out, above-mentioned to base
During the report CSI stood, pre-coding matrix (that is, precoder) can be with arbitrary shape
The information of formula reported, such as precoding matrix indicator (PMI), beam pointer (BI),
CSI-RS indicator etc..
It should also be noted that in the implementation procedure of method 200, UE 120 needs to judge base station
130 CSI-RSs sent are first, second or the 3rd CSI-RS.At certain
In a little embodiments, this can be based on radio resource control (RRC) letter from base station 130
Make realizing.
In existing mixing CSI-RS transmission scheme, CSI-RS types are by dynamic change or together
When act on to provide the long-term CSI in broadband and the short-term CSI in arrowband.Use different types of CSI-RS
Send and the mixed mechanism of CSI report is not defined before.Specifically how notify
Which CSI-RS transmission type UE uses, and how to utilize UE behaviors feedback CSI
Also it is not disclosed.This make it that above-mentioned additional step 201 is especially advantageous.
Shown in table 1 polytype correspondingly with the encoded radio of above-mentioned RRC signaling
CSI-RS transmission.This causes UE to be known that the CSI-RS transmission type from base station, with
And it is able to ensure that UE uses corresponding behavior.
Table 1
Above-mentioned double CSI processing with long period and short cycle CSI report realize mixing
The scheme of CSI-RS types.Using this method, base station will define two independent CSI and send out
Send and report process.If for example, the CSI measurements for various process are set difference preferentially
Level, then the CSI-RS of different CSI report processes can be with overlapping.And in a son
Only can be using a CSI measurement on frame.If for various process CSI measurement not by
Different priorities are set, then the CSI-RS of different CSI report processes can not must be weighed
It is folded.Two CSI measurements can be even applied in identical subframe.
It may be noted that long-term CSI transmission and report can be acyclic, and in short term
CSI is transmitted and report can be periodically or non-periodically.Using this mechanism, will only have
There is the CSI transmission for the purpose of short-term CSI measurements and report.Long-term CSI transmission and report will
By Downlink Control Information (DCI) form or accidental access response mandate (Random Access
Response Grant) trigger.In this case, DCI forms and machine access response are awarded
Power, which is should be, to be extended to including the CSI-RS transmission to triggering and the instruction of Report Type.It is as follows
Shown in face table 2.
Table 2
Fig. 3 is shown to be used in multiple-input and multiple-output according to the embodiment of the present disclosure in base station side
In mimo antenna array data are carried out with the method 300 of precoding.Specifically, method 300
Equally describe based on non-precoded CSI-RS and the specific beamformed CSI-RS of cell
Mixed transport scheme.
In step 302, prelisted in base station to user equipment using mimo antenna array through non-
The wave beam of code sends the first CSI-RS.Hereafter, in step 304, connect from user equipment
Receive the first long-term broad-band channel characteristic.In certain embodiments, the first long-term broad-band channel characteristic
The long-term channel characteristics being vertically oriented.In such embodiments, can be with step 304
Vertical prelist corresponding with the first long-term broad-band channel characteristic is received from user equipment with long period
Code matrix.Then, base station 130 in step 306 based on the first long-term broad-band channel received
Characteristic to wave beam carry out beam forming, and in step 308 to user equipment with beamformed
Wave beam afterwards sends the second CSI-RS；
Next, in step 310, base station 130 receives the second long-term broadband letter from user equipment
Road characteristic.In certain embodiments, what the second long-term broad-band channel characteristic was horizontally oriented is long-term
The characteristic of channel.In certain embodiments, in step 310, it can include with long period from user
Equipment receives long-term horizontal pre-coding matrix corresponding with the second long-term broad-band channel characteristic.Then,
Base station 130 in step 312, to user equipment, it is beamformed after wave beam send the 3rd
CSI-RS.
Next, in step 314, short-term narrow-band characteristic is received from user equipment.According to this public affairs
The one embodiment opened, the short-term channel behaviors that short-term narrow band channel characteristic is horizontally oriented.Root
According to one embodiment of the disclosure, step 314 can include receiving from user equipment with the short cycle
Short-term level pre-coding matrix corresponding with short-term narrow band channel characteristic.
Finally, method 300 proceeds to step 316, here, based on the first long-term broad-band channel
Characteristic, the second long-term broad-band channel characteristic and short-term narrow-band characteristic, are performed to the pre- of data
Coding.It is vertical pre- according to what is determined in above method step according to the specific embodiment of the disclosure
Encoder matrix, long-term horizontal pre-coding matrix and the execution pair jointly of short-term level pre-coding matrix
The precoding of data.
It may be noted that method 300 can also include additional step 301 (not shown), here,
Radio resource control signaling is sent to user equipment, radio resource control signaling is used to recognize
User equipment receives the first CSI-RS, the second CSI-RS or the 3rd CSI-RS
Signal.
Fig. 4 is shown according to another embodiment of the disclosure in UE sides for how defeated in multi input
Go out in mimo antenna array to carry out data the method 400 of precoding.Specifically, method
400 describe based on the specific beamformed CSI-RS of cell and specific based on UE
The scheme of CSI-RS mixed transport.Method 400 shown in Fig. 4 is carried out referring now to Fig. 1
It is described in detail, method 400 comprises the following steps：
In step 402, mimo antenna array is utilized in response to receiving base station at user equipment
Multiple second CSI-RSs that multiple wave beams after beamformed are sent, send to base station
First long-term broad-band channel characteristic and the second long-term broad-band channel characteristic, so as to mimo antenna
Array selects wave beam from multiple wave beams.According to one embodiment of the disclosure, first is long-term wide
The long-term channel characteristics being vertically oriented with the characteristic of channel, and the second long-term broad-band channel characteristic
The long-term channel characteristics being horizontally oriented.According to one embodiment of the disclosure, step 402 can
With including determining the first long-term broad-band channel characteristic and the second long-term broad-band channel characteristic；From predetermined
Selected and the first long-term broad-band channel characteristic pair respectively in the vertical code book neutralization levels code book of justice
The vertical pre-coding matrix answered and long-term level corresponding with the second long-term broad-band channel characteristic are pre-
Encoder matrix；And sent out vertical pre-coding matrix and long-term horizontal pre-coding matrix with long period
It is sent to base station.Next, in step 404, receiving what is sent through selected wave beam from base station
3rd CSI-RS.
In step 406, in response to receiving the 3rd CSI-RS, send short-term to base station
Narrow-band characteristic information, so that base station performs the precoding to data.According to the disclosure reality
Apply example, the short-term channel behaviors that short-term narrow band channel characteristic is horizontally oriented.According to the disclosure
One embodiment, step 406 can include determining that short-term narrow band channel characteristic；From predefined
Short-term level pre-coding matrix corresponding with short-term narrow band channel characteristic is selected in horizontal code book；With
And short-term level pre-coding matrix is sent to by base station with the short cycle.
Similar with method 200, method 400 can also include additional step 401 (not shown),
Here, the radio resource control signaling sent by base station is received, and based on radio resource
Control signaling, identification receives the first CSI-RS, the second CSI-RS or the 3rd
CSI-RS.
Fig. 5 is shown according to another embodiment of the disclosure in base station side for how defeated in multi input
Go out in mimo antenna array to carry out data the method 500 of precoding.Specifically, method
500 describe based on the specific beamformed CSI-RS of cell and specific based on UE
The scheme of CSI-RS mixed transport.Method 500 shown in Fig. 5 is carried out referring now to Fig. 1
It is described in detail, method 500 comprises the following steps：
In step 502, in base station to user equipment, using mimo antenna array through wave beam
Multiple wave beams after shaping send multiple second CSI-RSs.For example, providing 4 in advance
Wave beam.
In step 504, the first long-term broad-band channel characteristic is received and second long-term from user equipment
Broad-band channel characteristic.According to one embodiment of the disclosure, the first long-term broad-band channel characteristic is
The long-term channel characteristics of vertical direction, and the second long-term broad-band channel characteristic is horizontally oriented
Long-term channel characteristics.According to one embodiment of the disclosure, step 504 can be included with long week
Phase receives vertical pre-coding matrix corresponding with the first long-term broad-band channel characteristic from user equipment
And long-term horizontal pre-coding matrix corresponding with the second long-term broad-band channel characteristic.
In step 506, based on the first long-term broad-band channel characteristic and the second long-term broad-band channel spy
Property, select wave beam from multiple wave beams.For example, selecting it from above-mentioned 4 wave beams provided
In a wave beam.In step 508, the 3rd is sent to user equipment, using selected wave beam
CSI-RS.
Next, in step 510, short-term narrow band channel characteristic is received from user equipment.According to
One embodiment of the disclosure, the short-term channel behaviors that short-term narrow band channel characteristic is horizontally oriented.
According to one embodiment of the disclosure, step 510 can include connecing from user equipment with the short cycle
Receive short-term level pre-coding matrix corresponding with short-term narrow band channel characteristic.
In step 512, based on the first long-term broad-band channel characteristic, the second long-term broad-band channel spy
Property and short-term narrow-band characteristic, perform the precoding to data.According to the disclosure reality
Example is applied, according to the vertical pre-coding matrix determined in above method step, long-term horizontal precoding
Matrix and short-term level pre-coding matrix perform the precoding to data jointly.
Similar with method 300, method 500 can also include additional step 301 (not shown),
Here, sending radio resource control signaling to user equipment, radio resource control signaling is used
The first CSI-RS, the second CSI-RS or the 3rd are received in identification user equipment
CSI-RS.
Fig. 6 shows the block diagram of the user equipment 600 according to the embodiment of the present disclosure.As illustrated,
User equipment 600 includes controller 602 and transceiver 604.Transceiver 604 is by controller 602
Whole receptions and transmission operation in controlling for performing in the above method 200 and/or 400.
Fig. 7 shows the block diagram of the base station 700 according to the embodiment of the present disclosure.As illustrated, base
Stand 700 include multiple-input and multiple-output mimo antenna array 702, mimo antenna array 702
It is configured as performing the above method 300 and/or 500.Base station 700 also includes transceiver 704,
Transceiver, which is used to perform, receives and sends operation.Base station 700 also includes controller 706, control
Device 706 is configured as making base station 700 perform the above method 300 and/or 500.For example, control
Device 704 can perform beam forming operation and the pre-encode operation to data with control base station 700.
In general, the various embodiments of the disclosure can with hardware or special circuit, software,
Logic or its any combination are implemented.Some aspects can be implemented with hardware, and some other aspect
Can with firmware or software implementation, the firmware or software can by controller, microprocessor or its
Its computing device.Although the various aspects of the disclosure are shown and described as block diagram, flow
Figure is represented using some other drawing, but it is understood that frame described herein, equipment, being
System, techniques or methods can be in a non limiting manner with hardware, software, firmware, Special electrics
Road or logic, common hardware or controller or other computing devices or some of combination are implemented.
In addition, although operation is described with particular order, but this is understood not to require this kind of
Operation is performed or performed with generic sequence in the order shown, or requires all shown behaviour
It is performed to realize expected result.In some cases, multitask or parallel processing can be
Favourable.Similarly, although wrapped in the superincumbent discussion of details of some specific implementations
Contain, but these are not necessarily to be construed as any limitation of scope of this disclosure, but feature
Description is only to be directed to specific embodiment.Some features described in some embodiments of separation
Can in combination it be performed in single embodiment.Mutually oppose, it is each described in single embodiment
Planting feature can also be implemented separately or with any suitable sub-portfolio in various embodiments
Mode implement.
Although the disclosure is described with specific structural features and/or method action, it will be appreciated that
The scope of the technical scheme limited in the dependent claims is not necessarily limited to above-mentioned specific
Feature or action.In other words, the alternative embodiment of the only disclosure described above.For
For those skilled in the art, embodiment of the disclosure may have various modifications and variations.
All any modification, equivalence replacement, improvement made within the spirit and principle of the disclosure etc.,
It is all contained within the protection domain of the disclosure.
Claims (26)
1. a kind of carry out precoding in multiple-input and multiple-output mimo antenna array to data
Method, including：
In response to receiving base station at user equipment using the mimo antenna array through non-
The first CSI-RS that the wave beam of precoding is sent, sends the first long-term broadband to base station and believes
Road characteristic, beam forming is carried out so that the mimo antenna array is performed to the wave beam；
The second CSI-RS sent from wave beam of the base station reception after beamformed；
In response to receiving second CSI-RS, second is sent to the base station long-term
Broad-band channel characteristic；
The 3rd CSI-RS sent from wave beam of the base station reception after beamformed；
And
In response to receiving the 3rd CSI-RS, short-term arrowband is sent to the base station
Characteristic information, so that the base station performs the precoding to the data.
2. according to the method described in claim 1, wherein
The long-term channel characteristics that the first long-term broad-band channel characteristic is vertically oriented；
The long-term channel characteristics that the second long-term broad-band channel characteristic is horizontally oriented；And
The short-term channel behaviors that the short-term narrow band channel characteristic is horizontally oriented.
3. according to the method described in claim 1, believe wherein sending the first long-term broadband to base station
Road characteristic includes：
Determine the described first long-term broad-band channel characteristic；
Selected from predefined vertical code book corresponding with the described first long-term broad-band channel characteristic
Vertical pre-coding matrix；And
The vertical pre-coding matrix is sent to by the base station with long period.
4. according to the method described in claim 1, wherein sending the second long-term width to the base station
The band characteristic of channel includes：
Determine the described second long-term broad-band channel characteristic；
The selection length corresponding with the described second long-term broad-band channel characteristic from the code book becheduleding for
Phase horizontal pre-coding matrix；And
The long-term horizontal pre-coding matrix is sent to by the base station with long period.
5. according to the method described in claim 1, wherein sending short-term arrowband spy to the base station
Property information includes：
Determine the short-term narrow band channel characteristic；
Selected from predefined horizontal code book corresponding short with the short-term narrow band channel characteristic
Phase horizontal pre-coding matrix；And
The short-term level pre-coding matrix is sent to by the base station with the short cycle.
6. according to the method described in claim 1, in addition to：
Receive the radio resource control signaling sent by the base station；And
Based on the radio resource control signaling, identification receives the first CSI-RS letters
Number, second CSI-RS or the 3rd CSI-RS.
7. a kind of carry out precoding in multiple-input and multiple-output mimo antenna array to data
Method, including：
In response to receiving base station at user equipment using the mimo antenna array through wave beam
Multiple second CSI-RSs that multiple wave beams after shaping are sent, the is sent to the base station
One long-term broad-band channel characteristic and the second long-term broad-band channel characteristic, so as to described MIMO days
Linear array selects wave beam from the multiple wave beam；
The 3rd CSI-RS sent through selected wave beam is received from the base station；
In response to receiving the 3rd CSI-RS, short-term arrowband is sent to the base station
Characteristic information, so that the base station performs the precoding to the data.
8. method according to claim 7, wherein
The long-term channel characteristics that the first long-term broad-band channel characteristic is vertically oriented；
The long-term channel characteristics that the second long-term broad-band channel characteristic is horizontally oriented；And
The short-term channel behaviors that the short-term narrow band channel characteristic is horizontally oriented.
9. method according to claim 7, wherein it is long-term wide to send first to the base station
The band characteristic of channel and the second long-term broad-band channel characteristic include：
Determine the described first long-term broad-band channel characteristic and the second long-term broad-band channel characteristic；
Selected respectively from predefined vertical code book neutralization levels code book and described first is long-term
The corresponding vertical pre-coding matrix of broad-band channel characteristic and special with the described second long-term broad-band channel
Property corresponding long-term horizontal pre-coding matrix；And
The vertical pre-coding matrix and the long-term horizontal pre-coding matrix are sent out with long period
It is sent to the base station.
10. method according to claim 7, wherein sending short-term arrowband to the base station
Characteristic information includes：
Determine the short-term narrow band channel characteristic；
Selected from predefined horizontal code book corresponding short with the short-term narrow band channel characteristic
Phase horizontal pre-coding matrix；And
The short-term level pre-coding matrix W2 is sent to by the base station with the short cycle.
11. method according to claim 7, in addition to：
Receive the radio resource control signaling sent by the base station；And
Based on the radio resource control signaling, identification receives the first CSI-RS letters
Number, second CSI-RS or the 3rd CSI-RS.
12. one kind carries out precoding in multiple-input and multiple-output mimo antenna array to data
Method, including：
In base station the ripple of the mimo antenna array through non-precoded is utilized to user equipment
Beam sends the first CSI-RS；
The first long-term broad-band channel characteristic is received from the user equipment；
Beam forming is carried out to the wave beam based on the described first long-term broad-band channel characteristic；
To the user equipment, it is beamformed after wave beam send the second CSI-RS；
The second long-term broad-band channel characteristic is received from the user equipment；
To the user equipment, it is beamformed after wave beam send the 3rd CSI-RS；
Short-term narrow-band characteristic is received from the user equipment；And
Based on the described first long-term broad-band channel characteristic, the second long-term broad-band channel characteristic,
And the short-term narrow-band characteristic, perform the precoding to the data.
13. method according to claim 12, wherein
The long-term channel characteristics that the first long-term broad-band channel characteristic is vertically oriented；
The long-term channel characteristics that the second long-term broad-band channel characteristic is horizontally oriented；And
The short-term channel behaviors that the short-term narrow band channel characteristic is horizontally oriented.
14. method according to claim 12, wherein receiving first from the user equipment
Long-term broad-band channel characteristic includes：
Received and the described first long-term broad-band channel characteristic pair from the user equipment with long period
The vertical pre-coding matrix answered.
15. method according to claim 12, wherein receiving second from the user equipment
Long-term broad-band channel characteristic includes：
Received and the described second long-term broad-band channel characteristic pair from the user equipment with long period
The long-term horizontal pre-coding matrix W1 answered.
16. method according to claim 12, wherein receiving short-term from the user equipment
Narrow-band characteristic includes：
Receive corresponding with the short-term narrow band channel characteristic from the user equipment with the short cycle
Short-term level pre-coding matrix W2.
17. method according to claim 12, in addition to：
Radio resource control signaling, the radio resource control are sent to the user equipment
Signaling is used to recognize that the user equipment receives first CSI-RS, described second
CSI-RS or the 3rd CSI-RS.
18. one kind carries out precoding in multiple-input and multiple-output mimo antenna array to data
Method, including：
Base station to the user equipment, using the mimo antenna array through wave beam into
Multiple wave beams after shape send multiple second CSI-RSs；
The first long-term broad-band channel characteristic and the second long-term broadband letter are received from the user equipment
Road characteristic；
Based on the described first long-term broad-band channel characteristic and the second long-term broad-band channel characteristic,
Wave beam is selected from the multiple wave beam；
The 3rd CSI-RS is sent to the user equipment, using selected wave beam；
Short-term narrow band channel characteristic is received from the user equipment；
Based on the described first long-term broad-band channel characteristic, the second long-term broad-band channel characteristic,
And the short-term narrow-band characteristic, perform the precoding to the data.
19. method according to claim 18, wherein
The long-term channel characteristics that the first long-term broad-band channel characteristic is vertically oriented；
The long-term channel characteristics that the second long-term broad-band channel characteristic is horizontally oriented；And
The short-term channel behaviors that the short-term narrow band channel characteristic is horizontally oriented.
20. method according to claim 18, wherein receiving first from the user equipment
Long-term broad-band channel characteristic and the second long-term broad-band channel characteristic include：
Received and the described first long-term broad-band channel characteristic pair from the user equipment with long period
The vertical pre-coding matrix answered and corresponding with the described second long-term broad-band channel characteristic long-term
Horizontal pre-coding matrix.
21. method according to claim 18, wherein receiving short-term from the user equipment
Narrow-band characteristic includes：
Receive corresponding with the short-term narrow band channel characteristic from the user equipment with the short cycle
Short-term level pre-coding matrix.
22. method according to claim 18, in addition to：
Radio resource control signaling, the radio resource control are sent to the user equipment
Signaling is used to recognize that the user equipment receives first CSI-RS, described second
CSI-RS or the 3rd CSI-RS.
23. a kind of user equipment, including controller and transceiver, the controller are configured as
The transceiver perform claim is controlled to require the method any one of 1-6.
24. a kind of user equipment, including controller and transceiver, the controller are configured as
The transceiver perform claim is controlled to require the method any one of 7-11.
25. a kind of base station, including：
Multiple-input and multiple-output mimo antenna array；
Transceiver；And
Controller, the controller is configured as making the base station perform such as claim 12-17
Any one of method.
26. a kind of base station, including：
Multiple-input and multiple-output mimo antenna array；
Transceiver；And
Controller, the controller is configured as making the base station perform such as claim 18-22
Any one of method.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168559A (en) * | 2017-12-26 | 2018-06-15 | 西京学院 | A kind of indoor locating system and method based on spaced antenna |
| WO2019101152A1 (en) * | 2017-11-24 | 2019-05-31 | 上海诺基亚贝尔股份有限公司 | Method and device for performing precoding |
| CN112292840A (en) * | 2018-06-29 | 2021-01-29 | 苹果公司 | Spatial heat density reduction for millimeter wave antenna arrays |
| CN112640324A (en) * | 2018-06-29 | 2021-04-09 | 弗劳恩霍夫应用研究促进协会 | Antenna array codebook with beamforming coefficients adapted to arbitrary antenna responses of an antenna array |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110075752A1 (en) * | 2009-09-25 | 2011-03-31 | Hongming Zheng | Non-unitary precoding scheme for wireless communications |
| CN102148663A (en) * | 2011-03-22 | 2011-08-10 | 东南大学 | Method for realizing adaptive transmission by comprehensively utilizing long-time and short-time channel state information |
| CN102299774A (en) * | 2010-06-24 | 2011-12-28 | 上海贝尔股份有限公司 | Method for determining pre-coded matrix and corresponding communication method and equipment |
| CN102823153A (en) * | 2010-04-07 | 2012-12-12 | 瑞典爱立信有限公司 | A precoder structure for mimo precoding |
| CN102835056A (en) * | 2010-05-10 | 2012-12-19 | 华为技术有限公司 | System and method for reporting feedback information for adaptive codebooks |
| WO2015021596A1 (en) * | 2013-08-13 | 2015-02-19 | Nec(China) Co., Ltd. | Methods and apparatuses for channel estimation and feedback in a three-dimensional multiple input and multiple ouput system |
| CN105264787A (en) * | 2012-12-20 | 2016-01-20 | 谷歌技术控股有限责任公司 | Method and apparatus for antenna array channel feedback |
-
2016
- 2016-03-31 CN CN201610200896.7A patent/CN107294887B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110075752A1 (en) * | 2009-09-25 | 2011-03-31 | Hongming Zheng | Non-unitary precoding scheme for wireless communications |
| CN102823153A (en) * | 2010-04-07 | 2012-12-12 | 瑞典爱立信有限公司 | A precoder structure for mimo precoding |
| CN102835056A (en) * | 2010-05-10 | 2012-12-19 | 华为技术有限公司 | System and method for reporting feedback information for adaptive codebooks |
| CN102299774A (en) * | 2010-06-24 | 2011-12-28 | 上海贝尔股份有限公司 | Method for determining pre-coded matrix and corresponding communication method and equipment |
| CN102148663A (en) * | 2011-03-22 | 2011-08-10 | 东南大学 | Method for realizing adaptive transmission by comprehensively utilizing long-time and short-time channel state information |
| CN105264787A (en) * | 2012-12-20 | 2016-01-20 | 谷歌技术控股有限责任公司 | Method and apparatus for antenna array channel feedback |
| WO2015021596A1 (en) * | 2013-08-13 | 2015-02-19 | Nec(China) Co., Ltd. | Methods and apparatuses for channel estimation and feedback in a three-dimensional multiple input and multiple ouput system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019101152A1 (en) * | 2017-11-24 | 2019-05-31 | 上海诺基亚贝尔股份有限公司 | Method and device for performing precoding |
| US11483035B2 (en) | 2017-11-24 | 2022-10-25 | Nokia Shanghai Bell Co., Ltd. | Method and device for performing precoding |
| CN108168559A (en) * | 2017-12-26 | 2018-06-15 | 西京学院 | A kind of indoor locating system and method based on spaced antenna |
| CN108168559B (en) * | 2017-12-26 | 2020-05-05 | 西京学院 | Indoor positioning system and method based on distributed antenna |
| CN112292840A (en) * | 2018-06-29 | 2021-01-29 | 苹果公司 | Spatial heat density reduction for millimeter wave antenna arrays |
| CN112640324A (en) * | 2018-06-29 | 2021-04-09 | 弗劳恩霍夫应用研究促进协会 | Antenna array codebook with beamforming coefficients adapted to arbitrary antenna responses of an antenna array |
| CN112640324B (en) * | 2018-06-29 | 2024-04-09 | 弗劳恩霍夫应用研究促进协会 | Antenna array codebook with beamforming coefficients adapted to arbitrary antenna response |
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|---|---|
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