CN105871516A - Method, devices and system for feeding back vertical-dimensional channel state information - Google Patents
Method, devices and system for feeding back vertical-dimensional channel state information Download PDFInfo
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- CN105871516A CN105871516A CN201510036149.XA CN201510036149A CN105871516A CN 105871516 A CN105871516 A CN 105871516A CN 201510036149 A CN201510036149 A CN 201510036149A CN 105871516 A CN105871516 A CN 105871516A
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Abstract
The invention relates to a method, devices and system for feeding back vertical-dimensional channel state information. The method includes the following steps that: in the periodic feedback process of horizontal-dimensional channel state information, in every M feedback periods of the horizontal-dimensional channel state information, UE performs joint coding on the horizontal-dimensional channel state information and other information and then, feeds back a joint coding result to a base station, wherein the other information contains vertical-dimensional channel state information, and M is a positive integer; and after receiving the joint coding result, the base station analyzes the joint coding result so as to obtain the vertical-dimensional channel state information. The invention also provides corresponding UE and a base station device. With the method, devices and system of the invention adopted, the vertical-dimension channel state information can be effectively fed back.
Description
Technical field
The present invention relates to LTE communication field, particularly relate to feed back the side of the channel condition information of vertical dimensions
Method, Apparatus and system.
Background technology
Third generation partner program (3GPP, 3rdGeneration Partnership Project) drill for a long time
Enter in (LTE, Long Term Evolution) system, downlink have employed multiple-input and multiple-output (MIMO,
Multiple-Input Multiple-Output) technology to be to improve downlink peak rates.For supporting MIMO technology,
UE needs to base station feedback CQI, channel sequence instruction (RI, Rank Indication) information and precoding square
Battle array instruction (PMI, Precoding Matrix Indicatior) information.RI, CQI of UE and PMI information
By physical layer ascending control channel (PUCCH, Physical Uplink Control CHannel) or physics
Layer Uplink Shared Channel (PUSCH, Physical Uplink Shared Channel) is to base station feedback.RI、
CQI and PMI information are periodic feedback on PUCCH, and are by physical layer on PUSCH
Row scheduling authorization order triggers feedback.
Periodicity RI, CQI and PMI information feedback on PUCCH can be divided into two types, and the first kind is anti-
The feedback being mainly characterized by only broadband CQI information of feedback, is commonly called broadband CQI feedback；The
The feedback being mainly characterized by existing broadband CQI information of two class feedbacks, also has the anti-of sub-band CQI information
Feedback, and take different subframe, it is commonly called subband CQI feedback.
Broadband CQI feedback comprises four cycle parameter: Npd、NOFFSET,CQI、MRI、NOFFSET,RI, wherein
NpdRepresent the feedback cycle of broadband CQI information；NOFFSET,CQIIt is engraved in when representing the feedback of broadband CQI information
Time offset in one cycle；MRIThe feedback cycle of expression RI information is the broadband CQI feedback cycle
MRITimes；NOFFSET,RIRepresent that the RI information feedback moment is inclined relative to the time in broadband CQI information feedback moment
Put.
Subband CQI feedback comprises five cycle parameter: Npd、NOFFSET,CQI、H、MRI、NOFFSET,RI,
Wherein NpdRepresenting the feedback cycle of adjacent twice CQI information, one time CQI information feedback can be the widest
Band CQI information is fed back, it is also possible to be a CQI information feedback of certain part subband；NOFFSET,CQIRepresent
It is engraved in the time offset in the cycle during feedback of CQI information；H represents at twice adjacent broadband CQI
The circulation feedback of H second son bandwidth CQI information is experienced by, when not sending out the instruction of precoding type between information feedback
When (PTI, Precoding Type Indicator) or PTI=1, H=J K+1, J represent the most N number of
Subband is divided into J subband group, and K represents the size (unit is RB) of subband, as PTI=0, high-rise
Configuration H ', is H ' * N for indicating the cycle of the long-term PMI in broadbandpd, now broadband CQI is at twice
Send once between the long-term PMI in broadband；MRIThe feedback cycle of expression RI information is broadband CQI feedback week
The M of phaseRITimes；NOFFSET,RIRepresent RI information feedback the moment relative to broadband CQI information feedback the moment time
Between bias.
In third generation partner program (3rd Generation Partnership Project is called for short 3GPP)
LTE65 meeting has been directed towards full dimension MIMO technique (Full-Dimension MIMO,
It is called for short FD-MIMO) project verification, for studying the beam forming supporting vertical plane with horizontal plane.Two-dimensional array
The antenna system of structure can carry out Self Adaptive Control in vertically and horizontally dimension, and systematicness is greatly improved
Can, it is an important directions of Future Development.Terminal not only needs the channel of feedback level dimension thus
Status information, and need the channel condition information feeding back vertical dimensions (to include the precoding code of vertical dimensions
Word indexing, the CQI of vertical dimensions, the RI information of vertical dimensions), in order to base station is adjusted based on above-mentioned channel
Whole horizontal extension angle and vertical dip angle.But prior art also cannot support the channel of UE feedback vertical dimensions
Status information.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention proposes a kind of channel condition information feeding back vertical dimensions
Method, described method is:
During the periodic feedback of the channel condition information of horizontal dimensions, every M described horizontal dimensions
The feedback cycle of channel condition information, UE is by the channel condition information of described horizontal dimensions and out of Memory
Feeding back to base station after carrying out combined coding, described out of Memory comprises the channel condition information of vertical dimensions, M
For positive integer；Resolve after the result of the described combined coding of base station reception, obtain the letter of described vertical dimensions
Channel state information.
Preferably, the channel condition information of described horizontal dimensions is the rank indication information of horizontal dimensions.
It is further preferred that described combined coding can be particularly as follows: put the channel condition information of vertical dimensions
After the rank indication information of horizontal dimensions, then carry out the channel coding of linear block codes.
Another it is further preferred that described out of Memory also includes the long-term code book index in broadband, described combine volume
Code, particularly as follows: be first combined by the long-term code book index of rank indication information and broadband of horizontal dimensions, then will
After the channel condition information of vertical dimensions is placed in the result of described combination, finally carry out the letter of linear block codes
Road encodes.
Another it is further preferred that described out of Memory also includes that precoding type indicates, described combined coding
Particularly as follows: after the instruction of precoding type is placed in the rank indication information of horizontal dimensions, by the letter of vertical dimensions
After channel state information is placed in the instruction of precoding type, then carry out the channel coding of linear block codes.
Preferably, the channel condition information of described horizontal dimensions is the long-term PMI information of horizontal dimensions.Enter
One step is preferred, and described combined coding is particularly as follows: be placed in horizontal dimensions by the channel condition information of vertical dimensions
Long-term PMI information after, then carry out the channel coding of linear block codes.
In said method, it is preferred that base station is to the concrete numerical value of UE notice M.
In said method, the channel condition information of described vertical dimensions includes the pre-encoding codeword rope of vertical dimensions
Draw, the order of the CQI of vertical dimensions, vertical dimensions indicates.
The present invention also proposes the UE device of a kind of channel condition information for feeding back vertical dimensions, described
UE device includes combined coding module, information feedback module, wherein,
Described combined coding module is for combining the channel condition information of horizontal dimensions with out of Memory
Coding, described out of Memory comprises the channel condition information of vertical dimensions；
Described information feedback module is anti-for the periodicity of the channel condition information in horizontal dimensions
During feedback, the feedback cycle of the channel condition information of every M described horizontal dimensions, combine volume by described
The combined coding result of code module feeds back to base station, and M is positive integer.
The present invention also proposes the base station apparatus of a kind of channel condition information for feeding back vertical dimensions, its feature
Being, described base station apparatus includes channel condition information receiver module, combined decoding module, wherein,
Described channel condition information receiver module is anti-for the periodicity of the channel condition information in horizontal dimensions
During feedback, the feedback cycle of the channel condition information of every M described horizontal dimensions, receive UE feedback
The channel condition information of horizontal dimensions and the coding result of out of Memory, described out of Memory comprises vertical dimensions
Channel condition information, M is positive integer；
Described combined decoding module is for the combined coding knot receiving described channel condition information receiver module
Fruit carries out combined decoding, it is thus achieved that the channel condition information of vertical dimensions.
The present invention is used can effectively to feed back the channel condition information of vertical dimensions.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, retouch below
Accompanying drawing in stating is some embodiments of the present invention, for those of ordinary skill in the art, is not paying
On the premise of creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the RI bit explanation chart using each antenna codebook of the embodiment of the present invention one；
Fig. 2 is that the vertical dimensions channel condition information of the embodiment of the present invention one carries out combined coding with order instruction
Schematic diagram；
Fig. 3 be the feedback cycle parameter of the vertical dimensions of the embodiment of the present invention one schematic diagram is set；
Fig. 4 is that the bit strengthening 4 antenna codebooks that do not uses of the embodiment of the present invention two illustrates chart；
Fig. 5 is that the bit strengthening 4 antenna codebooks that uses of the embodiment of the present invention two illustrates chart；
Fig. 6 is that the bit strengthening 4 antenna codebooks that do not uses of the embodiment of the present invention three illustrates chart；
Fig. 7 is that the bit strengthening 4 antenna codebooks that uses of the embodiment of the present invention three illustrates chart；
Fig. 8 be the feedback cycle parameter of the vertical dimensions of the embodiment of the present invention three schematic diagram is set；
Fig. 9 is the broadband long-term PMI bit explanation chart of the embodiment of the present invention four；
Figure 10 be the feedback cycle parameter of the vertical dimensions of the embodiment of the present invention four schematic diagram is set；
Figure 11 is the structure of the UE device of the feedback vertical dimensions channel condition information of the embodiment of the present invention five
Figure；
Figure 12 is the structure of the base station apparatus of the feedback vertical dimensions channel condition information of the embodiment of the present invention five
Figure.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments；It should be noted that
In the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly fall into the scope of protection of the invention.
Embodiment one
The present embodiment only has broadband CQI/PMI to feed back with horizontal dimensions, and use PUCCH 1-1 and
As a example by the situation of PUCCH 1-1submode 2 type.The channel condition information of vertical dimensions in the present embodiment
Feed back together with the RI information of horizontal dimensions.Fig. 1 is that the RI bit using each antenna codebook illustrates, then originally
The method of the channel condition information of embodiment feedback vertical dimensions is as follows:
During the periodic feedback of the RI information of horizontal dimensions, the feedback cycle of every M RI information,
What UE just fed back RI information and vertical dimensions channel condition information (vCSI) on PUCCH channel combines volume
Code result, base station resolves after receiving, it is thus achieved that vertical dimensions channel condition information.Wherein, combined coding
Process is as in figure 2 it is shown, vertical dimensions channel condition information (vCSI) and order are indicated (RI) to be combined into one by UE
Associating feedback report, after wherein vCSI is arranged at the sequence of RI, then enters above-mentioned associating feedback report
The channel coding of line linearity block code, obtains the codeword sequence after channel coding and feeds back to base station.
The concrete numerical value of M is given advance notice to UE by base station.As it is shown on figure 3, base station arranges vertical dimensions
The feedback cycle parameter M of channel condition informationv-CSI(i.e. M), represents the channel condition information of vertical dimensions
Feedback cycle is the M of RI information feedback periodv-CSITimes；Now, the feedback cycle of RI information is MRI*Npd,
NpdFor the feedback cycle of adjacent twice broadband CQI information, MRIThe feedback cycle of expression RI information is broadband
The M in CQI feedback cycleRITimes.High-level signaling is passed through by the feedback of the channel condition information of vertical dimensions in base station
Cycle parameter Mv-CSIIt is sent to UE.UE receives Mv-CSI, then according to feedback cycle parameter, pass through PUCCH
Feedback combined coding result.
Embodiment two
The present embodiment still only has broadband CQI/PMI to feed back with horizontal dimensions, and uses PUCCH 1-1
As a example by the situation of submode 1 type.Unlike embodiment one, in the present embodiment, order is indicated by UE
And the composite sequence in the long-term code book index in broadband (i1) and vertical dimensions channel condition information (vCSI) group (RI)
Synthesize one associating feedback report, wherein, vCSI the long-term code book index of RI and broadband composite sequence it
After, then UE carries out the channel coding of linear block codes to associating feedback report.Fig. 4 is not use enhancing
The bit explanation of 4 antenna codebooks, Fig. 5 is the bit explanation using and strengthening 4 antenna codebooks.
Embodiment three
The present embodiment has again subband CQI feedback with horizontal dimensions existing broadband CQI, and uses PUCCH
As a example by the situation of 2-1 type.Unlike embodiment one, in the present embodiment UE by order instruction (RI),
Precoding type instruction (PTI) and vertical dimensions channel condition information (vCSI) are combined into one and combine feedback
Secondly report, wherein, sequencing RI bit before this, is PTI bit, is finally vCSI bit, so
Rear UE carries out the channel coding of linear block codes to associating feedback report.Fig. 6 is not use enhancing 4 antennas
The bit explanation of code book, Fig. 7 is the bit explanation using and strengthening 4 antenna codebooks.
The concrete numerical value of M is given advance notice to UE by base station.As shown in Figure 8, base station arranges vertical dimensions
The feedback cycle parameter M of channel condition informationv-CSI(i.e. M), represents the channel condition information of vertical dimensions
Feedback cycle is the M of RI information feedback periodv-CSITimes；Now, the feedback cycle of RI information is
MRI*H*Npd, NpdFor the feedback cycle of adjacent twice CQI information, H represents in twice adjacent broadband
The circulation feedback of H second son bandwidth CQI information, M is experienced by between CQI information feedbackRIRepresent RI information
Feedback cycle be the M in broadband CQI feedback cycleRITimes.
Embodiment four
The present embodiment has again subband CQI feedback with horizontal dimensions existing broadband CQI, and uses PUCCH
As a example by the situation of 2-1 type.Unlike embodiment three, the channel status of vertical dimensions in the present embodiment
Feed back together with information PMI information long-term with the broadband of horizontal dimensions.UE is by long-term for broadband PMI and vertical dimension
Degree channel condition information (vCSI) is combined into an associating feedback report, and wherein, sequencing broadband before this is long
Secondly phase PMI bit, be vCSI bit, then UE carries out linear block codes to combining feedback report
Channel coding.Fig. 9 is the bit explanation of the present embodiment.
The concrete numerical value of M is given advance notice to UE by base station.As shown in Figure 10, base station arranges vertical dimensions
The feedback cycle parameter M of channel condition informationv-CSI(i.e. M), represents the channel condition information of vertical dimensions
Feedback cycle is the M of broadband PMI information feedback cyclev-CSITimes；Now, the feedback week of broadband PMI information
Phase is H ' * Npd, NpdFor the feedback cycle of adjacent twice CQI information, H ' is configured by high level.
Embodiment five
The present embodiment proposes the UE device of a kind of channel condition information feeding back vertical dimensions, this UE device
Structure as shown in figure 11, including combined coding module, information feedback module, wherein,
Described combined coding module is for combining the channel condition information of horizontal dimensions with out of Memory
Coding, described out of Memory comprises the channel condition information of vertical dimensions；
Described information feedback module is anti-for the periodicity of the channel condition information in horizontal dimensions
During feedback, the feedback cycle of the channel condition information of every M described horizontal dimensions, combine volume by described
The combined coding result of code module feeds back to base station, and M is positive integer.
The present embodiment also proposes the base station apparatus of a kind of channel condition information feeding back vertical dimensions, and this base station fills
The structure put as shown in figure 12, including channel condition information receiver module, combined decoding module, wherein,
Described channel condition information receiver module is anti-for the periodicity of the channel condition information in horizontal dimensions
During feedback, the feedback cycle of the channel condition information of every M described horizontal dimensions, receive UE feedback
The channel condition information of horizontal dimensions and the coding result of out of Memory, described out of Memory comprises vertical dimensions
Channel condition information；
Described combined decoding module is for the combined coding knot receiving described channel condition information receiver module
Fruit carries out combined decoding, it is thus achieved that the channel condition information of vertical dimensions.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can
Completing with the hardware relevant by programmed instruction, aforesaid program can be stored in an embodied on computer readable and deposit
In storage media, this program upon execution, performs to include the step of said method embodiment；And aforesaid storage
Medium includes: the various media that can store program code such as ROM, RAM, magnetic disc or CD.
Last it is noted that above example is only in order to illustrate technical scheme, rather than it is limited
System；Although the present invention being described in detail with reference to previous embodiment, those of ordinary skill in the art
It is understood that the technical scheme described in foregoing embodiments still can be modified by it, or to it
Middle part technical characteristic carries out equivalent；And these amendments or replacement, do not make appropriate technical solution
Essence departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1. the method for the channel condition information feeding back vertical dimensions, it is characterised in that described method is:
During the periodic feedback of the channel condition information of horizontal dimensions, the letter of every M described horizontal dimensions
The feedback cycle of channel state information, the channel condition information of described horizontal dimensions is carried out by UE with out of Memory
Feeding back to base station after combined coding, described out of Memory comprises the channel condition information of vertical dimensions, and M is just
Integer；Resolve after the result of the described combined coding of base station reception, obtain the channel shape of described vertical dimensions
State information.
Method the most according to claim 1, it is characterised in that:
The channel condition information of described horizontal dimensions is the rank indication information of horizontal dimensions.
Method the most according to claim 2, it is characterised in that:
Described combined coding particularly as follows: be placed in the order instruction of horizontal dimensions by the channel condition information of vertical dimensions
After information, then carry out the channel coding of linear block codes.
Method the most according to claim 2, it is characterised in that:
Described out of Memory also includes the long-term code book index in broadband, and described combined coding is particularly as follows: first by level
The long-term code book index of the rank indication information of dimension and broadband is combined, then by the channel status of vertical dimensions
After information is placed in the result of described combination, finally carry out the channel coding of linear block codes.
Method the most according to claim 2, it is characterised in that:
Described out of Memory also includes that precoding type indicates, and described combined coding is particularly as follows: by precoding class
After type instruction is placed in the rank indication information of horizontal dimensions, the channel condition information of vertical dimensions is placed in and prelists
After code type instruction, then carry out the channel coding of linear block codes.
Method the most according to claim 1, it is characterised in that:
The channel condition information of described horizontal dimensions is the long-term PMI information of horizontal dimensions.
Method the most according to claim 6, it is characterised in that:
Described combined coding is particularly as follows: be placed in the long-term of horizontal dimensions by the channel condition information of vertical dimensions
After PMI information, then carry out the channel coding of linear block codes.
8. according to the method described in claim 1～7 any one, it is characterised in that base station leads to UE
Know the concrete numerical value of M.
9. according to the method described in claim 1～7 any one, it is characterised in that: described vertical dimensions
Channel condition information include the pre-encoding codeword index of vertical dimensions, the CQI of vertical dimensions, vertical dimensions
Order instruction.
10. the UE device being used for feeding back the channel condition information of vertical dimensions, it is characterised in that institute
State UE device and include combined coding module, information feedback module, wherein,
Described combined coding module is for combining the channel condition information of horizontal dimensions with out of Memory
Coding, described out of Memory comprises the channel condition information of vertical dimensions；
Described information feedback module is anti-for the periodicity of the channel condition information in horizontal dimensions
During feedback, the feedback cycle of the channel condition information of every M described horizontal dimensions, combine volume by described
The combined coding result of code module feeds back to base station, and M is positive integer.
11. 1 kinds for feeding back the base station apparatus of the channel condition information of vertical dimensions, it is characterised in that institute
State base station apparatus and include channel condition information receiver module, combined decoding module, wherein,
Described channel condition information receiver module is anti-for the periodicity of the channel condition information in horizontal dimensions
During feedback, the feedback cycle of the channel condition information of every M described horizontal dimensions, receive UE feedback
The channel condition information of horizontal dimensions and the coding result of out of Memory, described out of Memory comprises vertical dimensions
Channel condition information, M is positive integer；
Described combined decoding module is for the combined coding knot receiving described channel condition information receiver module
Fruit carries out combined decoding, it is thus achieved that the channel condition information of vertical dimensions.
12. 1 kinds for feeding back the system of the channel condition information of vertical dimensions, it is characterised in that described system
System includes: UE device as claimed in claim 10 and base station apparatus as claimed in claim 11.
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| CN201510036149.XA CN105871516A (en) | 2015-01-23 | 2015-01-23 | Method, devices and system for feeding back vertical-dimensional channel state information |
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| CN201510036149.XA CN105871516A (en) | 2015-01-23 | 2015-01-23 | Method, devices and system for feeding back vertical-dimensional channel state information |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102448113A (en) * | 2010-09-30 | 2012-05-09 | 中兴通讯股份有限公司 | Method and system for sending periodical channel state information |
| CN102938688A (en) * | 2011-08-15 | 2013-02-20 | 上海贝尔股份有限公司 | Method and device for channel measurement and feedback of multi-dimensional antenna array |
| CN103634085A (en) * | 2012-08-27 | 2014-03-12 | 电信科学技术研究院 | Methods, devices and system for PMI feedbacking and receiving |
| WO2014038321A1 (en) * | 2012-09-07 | 2014-03-13 | 株式会社エヌ・ティ・ティ・ドコモ | Radio communication method, user terminal, radio base station and radio communication system |
| CN103840868A (en) * | 2012-11-20 | 2014-06-04 | 电信科学技术研究院 | Methods for indicating and feeding back channel quality information, devices and system |
-
2015
- 2015-01-23 CN CN201510036149.XA patent/CN105871516A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102448113A (en) * | 2010-09-30 | 2012-05-09 | 中兴通讯股份有限公司 | Method and system for sending periodical channel state information |
| CN102938688A (en) * | 2011-08-15 | 2013-02-20 | 上海贝尔股份有限公司 | Method and device for channel measurement and feedback of multi-dimensional antenna array |
| CN103634085A (en) * | 2012-08-27 | 2014-03-12 | 电信科学技术研究院 | Methods, devices and system for PMI feedbacking and receiving |
| WO2014038321A1 (en) * | 2012-09-07 | 2014-03-13 | 株式会社エヌ・ティ・ティ・ドコモ | Radio communication method, user terminal, radio base station and radio communication system |
| CN103840868A (en) * | 2012-11-20 | 2014-06-04 | 电信科学技术研究院 | Methods for indicating and feeding back channel quality information, devices and system |
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