CN106961296A - A kind of open loop multi-antenna sending method - Google Patents
A kind of open loop multi-antenna sending method Download PDFInfo
- Publication number
- CN106961296A CN106961296A CN201610012164.5A CN201610012164A CN106961296A CN 106961296 A CN106961296 A CN 106961296A CN 201610012164 A CN201610012164 A CN 201610012164A CN 106961296 A CN106961296 A CN 106961296A
- Authority
- CN
- China
- Prior art keywords
- csi
- enb
- coding matrix
- dmrs
- data
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
-
- 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]
-
- 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
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
-
- 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
- H04L25/0202—Channel estimation
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention proposes a kind of open loop multi-antenna sending method, including：UE reports CSI after receiving CSI RS；ENB determines that beam direction obtains corresponding beam set according to the CSI or high-rise configurations, and M wave beam is constructed from beam set as pre-coding matrix collection, and M is definite value or the variable value obtained by the eNB CSI fed back according to UE；The pre-coding matrix that eNB is concentrated according to the pre-coding matrix carries out PDSCH precodings and DMRS precodings, and the DMRS precodings include：M DMRS port is selected, the sequence of the M DMRS port is generated, then the M pre-coding matrix with the pre-coding matrix collection is multiplied respectively；UE passes through DMRS demodulating datas.The present invention can realize the precoding of non-code book, improve pre-coding matrix precision.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of open loop multi-antenna sending method.
Background technology
The R8 versions of long evolving system (Long-Term Evolution) support two kinds of open loop multi-antenna hairs
Mode is sent, one kind is another (to send mould for Large CDD to send diversity (sending mode 2, TM2)
Formula 3, TM3).UE is all based on CRS (cell reference signals) demodulation numbers in both sending modes
According to having the disadvantage that：
1, it is impossible to realize non-codebook precoding, cause originator precoding accuracy relatively low, influence systematic function；
2, demodulated reference signal CRS is limited to, it is only maximum to support to 4 ports, it is impossible to support more multiport
Send；
3, precoding is full dimension code word.
And the TM9 (maximum supports 8 antenna ports) and TM10 that R10 versions are introduced (support CoMP
Transmission) in originator non-codebook precoding can be achieved, its implementation is：PDSCH pre-coding matrixes are not
The CSI for belonging to UE reports code book used, the other squares that can be obtained for eNB according to feedback and dispatching algorithm
Battle array, now DMRS also carry out identical precoding accordingly, and then UE can by DMRS demodulating datas,
Without known pre-coding matrix.
Obviously, if open loop multi-antenna sending mode is also carried out using the above-mentioned pre-coding matrix using non-code book
PDSCH/DMRS precodings, and then modes of the UE based on DMRS demodulating datas, it is possible to realize non-
Codebook precoding, improves pre-coding matrix precision.But prior art does not propose the corresponding side of implementing also
Method.
The content of the invention
The present invention proposes a kind of open loop multi-antenna sending method, and this method includes：
UE reports CSI after receiving CSI-RS；
ENB determines that beam direction obtains corresponding beam set according to the CSI or high-rise configurations, from wave beam
M wave beam is constructed in set as pre-coding matrix collection, M is definite value or fed back by eNB according to UE
The variable value that CSI is obtained；
The pre-coding matrix that eNB is concentrated according to the pre-coding matrix carries out PDSCH precodings and DMRS
Precoding, the DMRS precodings include：M DMRS port is selected, the M DMRS is generated
The sequence of port, then the M pre-coding matrix with the pre-coding matrix collection is multiplied respectively；
UE passes through DMRS demodulating datas.
It is preferred that, the PDSCH precodings include：
Data are divided into multiple set after being pre-processed according to established rule, by the pre-coding matrix collection
In pre-coding matrix cycle assignment gives each set successively, finally belong to the data of identity set with being allocated
Pre-coding matrix be multiplied, it is described pretreatment at least include layer mapping handle.
It is preferred that, the pretreatment can be specially：Data carry out layer mapping after, then with a unitary matrice
Or circular matrix is multiplied, or it is multiplied successively with a unitary matrice and a circular matrix.
It is preferred that, the established rule can be any one in following four：
The data being mapped to every time in N number of data symbol belong to identity set；
The data being mapped to every time in N number of PRB belong to identity set；
The data being mapped to every time in N number of subcarrier belong to identity set；
The data being mapped to every time in N number of symbol belong to identity set；
Above-mentioned N is positive integer.
It is preferred that, report CSI to include after the UE receptions CSI-RS：ENB sends K CSI-RS,
Each CSI-RS is a broadband beams, with specifically vertically and horizontally, K is positive integer；UE
Optimal beam direction is selected from K broadband beams, feeding back optimal beam direction to eNB indicates CRI
With the RI and CQI in this optimal beam direction；The CRI that eNB feeds back according to UE determines that beam direction is obtained
Corresponding beam set, constructs M wave beam as pre-coding matrix from beam set, M for definite value or
The variable value obtained by the eNB CRI fed back according to UE.
It is preferred that, report CSI to include after the UE receptions CSI-RS：It is 2K that eNB, which sends a port,
CSI-RS, comprising K narrow-band beam, each narrow-band beam have it is specific vertically and horizontally,
K is positive integer；UE selects optimal beam direction from K narrow-band beam, and optimal ripple is fed back to eNB
Shu Fangxiang code words and the RI and CQI in this optimal beam direction；The optimal beam side that eNB feeds back according to UE
Determine that beam direction obtains corresponding beam set to code word, from beam set construct M wave beam as
Pre-coding matrix, M is one that definite value or the optimal beam direction code word fed back by eNB according to UE are obtained
Variable value.
It is preferred that, report CSI to include after the UE receptions CSI-RS：ENB sends non-precoded CSI-RS；
UE feeds back RI and CQI according to non-precoded CSI-RS to eNB；
ENB obtains corresponding wave beam according to the UE RI fed back and CQI and high-rise configuration precoding set
Set, constructs M wave beam as pre-coding matrix from beam set, M for definite value or by eNB according to
The variable value that the RI of UE feedbacks is obtained.
The present invention targetedly carries out precoding using UE channel conditions, and UE is solved eventually through DMRS
Adjusting data, the advantage of the invention is that：1, it is not necessary to known pre-coding matrix, non-code book can be realized
Precoding, improves pre-coding matrix precision, obtains reference signal pre-coding gain, improves channel estimation reliable
Property, so as to further improve systematic function.2, multiport can be supported, can be produced under the conditions of identical traffic
Bigger throughput of system.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to implementing
The accompanying drawing to be used needed for example or description of the prior art 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 being paid
On the premise of creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that the CSI of the embodiment of the present invention one reports the process schematic that pre-coding matrix collection is determined with eNB；
Fig. 2 is the PDSCH precoding process schematic diagrames of the embodiment of the present invention one；
Fig. 3 is the DMRS precoding process schematic diagrames of the embodiment of the present invention one.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the present invention
Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that
Described embodiment is a part of embodiment of the invention, rather than whole embodiments；It should be noted that
In the case where not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
Every other embodiment, belong to the scope of protection of the invention.
The basic thought of this method is to carry out PDSCH and DMRS precodings with the pre-coding matrix of non-code book,
And then UE is based on DMRS demodulating datas.Present invention may apply to a variety of open loop multi-antenna sending methods,
It is preferred that, the following examples are all by taking typical Large CDD open loop multi-antenna sending methods as an example.
Embodiment one
Large CDD open loop multi-antennas sending method includes three critical process：CSI is reported to be determined with eNB
The process of pre-coding matrix collection, PDSCH precoding process, DMRS precoding process.In the present embodiment
These three processes are implemented as follows.
(1) CSI reports the process that pre-coding matrix collection is determined with eNB
The present embodiment uses the CSI reporting schemes of the Class B in LTE R13 versions.Class B have two kinds
Configure beam forming CSI-RS modes：If including multiple CSI-RSs in a CSI process,
UE needs feedback optimal beam direction to indicate (CRI)；If including a CSI-RS in a CSI process
Resource, the then port that UE needs feedback to represent beam direction selects and represented the adjustment of polarization direction
Co-phasing angles.The present embodiment uses Class B former configuration mode, as shown in figure 1, i.e.：
ENB sends K CSI-RS, and each CSI-RS is a broadband beams, with specific vertical and water
Square to K is positive integer；UE selects optimal beam direction from K broadband beams, feeds back optimal
Beam direction indicates (CRI), and reports the RI and CQI in this optimal beam direction.Accordingly, eNB by
CRI determines that beam direction obtains corresponding beam set, and M wave beam is constructed from beam set, as
Pre-coding matrix collection, is expressed as W=[C1...CM], this M can be definite value, or by eNB according to feedback
CRI obtain a variable value.
The process can also use other CSI reporting schemes, referring specifically to this specification other embodiments.
(2) PDSCH precoding process
ENB carries out such as operations described below to data, as shown in Figure 2：
A, layer mapping is carried out to the data symbol after modulation, and number of plies υ depends on the RI values that UE feeds back；
B, the data after layer mapping are multiplied with a dimension for υ × υ unitary matrice again, completion different layers it
Between data mixing function, unitary matrice is also uniquely determined after number of plies υ is determined.
C, then be multiplied with dimension for υ × υ circulation delay matrixes, circulation delay is introduced, each antenna is added
Frequency selectivity, when number of plies υ determines that Posterior circle delay matrix is also uniquely determined.
D, multiple set are divided data into according to set data precoding rule, by pre-coding matrix collection
In pre-coding matrix cycle assignment gives each set successively, the data symbol for belonging to identity set multiplies allocated
Pre-coding matrix, complete the precoding based on channel status.
The set data precoding rule of the present embodiment is：The data being mapped in N number of data symbol belong to
Identity set.After the layering of current downlink data block, every layer of symbol numbers areFor per N number of number
According to symbol, eNB is by the different precoding of cycle assignment, that is, the precoding for being mapped to q-th of symbol is W (k),
Wherein k is precoding index, andIt is preferred that, N can take
Number of plies υ.It is another preferred, N access value 1, now each data symbol carry out different precodings.
The process can also be using set data precoding rule, referring specifically to this specification other embodiments.
(3) DMRS precoding process
As shown in figure 3, the wave beam number M that eNB is concentrated according to pre-coding matrix, selects downlink reference signal
7~port of DMRS port 6+M, generation DMRS port 7~port 6+M sequence, to DMRS ends
Mouth 6+k (k=1...M) sequence multiplies pre-coding matrix W (k), finally gives y(6+k)=W (k) x(6+k), k=1...M.
Embodiment two
The present embodiment and the difference of embodiment one are：CSI reports the mistake that pre-coding matrix collection is determined with eNB
Cheng Zhong, using using Class B latter configuration mode, i.e.,：It is 2K's that eNB, which sends a port,
CSI-RS, comprising K narrow-band beam, each narrow-band beam has specifically vertically and horizontally；UE
Optimal beam direction, feedback optimal beam direction code word are selected from K narrow-band beam, and reports this most
The RI and CQI of excellent beam direction.Accordingly, eNB determines that beam direction is obtained by optimal beam direction code word
To corresponding beam set, M wave beam is constructed from beam set, as pre-coding matrix, is expressed as
W=[C1...CM], this M can be definite value, or be obtained by eNB according to the optimal beam direction code word of feedback
To a variable value.
Embodiment three
The present embodiment and the difference of embodiment one are：CSI reports the mistake that pre-coding matrix collection is determined with eNB
Cheng Zhong, the present embodiment uses the CSI reporting schemes of the ClassA in LTE R13 versions.I.e.：ENB is sent out
Send a non-precoded CSI-RS, the whole cells of covering；UE reports CSI according to non-precoded CSI-RS,
Include RI and CQI.ENB obtains corresponding beam set according to high level configuration, is constructed from beam set
M wave beam is expressed as W=[C as pre-coding matrix collection1...CM], this M can be definite value, or by
ENB obtains a variable value according to RI.
Example IV
The present embodiment and the difference of embodiment one are：It is set in the step d of PDSCH precoding process
Data precoding rule be：The data being mapped in N number of PRB belong to identity set.
Current downlink scheduled N number of PRB, and its PRB is designated as p, p+1 ..., p+N-1 by LSB order sequence.
For per N number of PRB, the different precoding of cycle assignment is mapped to q-th of PRB number by eNB
It is W (k) according to precoding, wherein k is precoding index, and
It is preferred that, N can take number of plies υ.It is another preferred, N access value 1, now each PRB carry out not
Same precoding.
Embodiment five
The present embodiment and the difference of embodiment one are：It is set in the step d of PDSCH precoding process
Data precoding rule be：The data being mapped in N number of subcarrier belong to identity set.
Current downlink scheduled N number of subcarrier, and all subcarriers are designated as by LSB order sequence
p,p+1,...,p+N-1.For per N number of subcarrier, eNB reflects the different precoding of cycle assignment
The data precoding for being mapped to q-th of subcarrier is W (k), and wherein k is precoding index, andIt is preferred that, N can take number of plies υ.Another preferred, N takes
Numerical value 1, now each subcarrier carry out different precodings.
Embodiment six
The present embodiment and the difference of embodiment one are：It is set in the step d of PDSCH precoding process
Data precoding rule be：The data being mapped in N number of symbol belong to identity set.
Altogether comprising 14 symbol in one normal CP TTI.For per N number of symbol, eNB
By the different precoding of cycle assignment, that is, the data precoding for being mapped to q-th of symbol is W (k), its
Middle k is precoding index, andIt is preferred that, N can take RI values.
It is another preferred, N access value 1, now each symbol carry out different precodings.
One of ordinary skill in the art will appreciate that：Realize that all or part of step of above method embodiment can
To be completed by the related hardware of programmed instruction, foregoing program can be stored in an embodied on computer readable and deposit
In storage media, the program upon execution, performs the step of including above method embodiment；And foregoing storage
Medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than it is limited
System；Although the present invention is described in detail with reference to the foregoing embodiments, one of ordinary skill in the art
It should be understood that：It can still modify to the technical scheme described in foregoing embodiments, or to it
Middle some technical characteristics carry out equivalent；And these modifications 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 (7)
1. a kind of open loop multi-antenna sending method, it is characterised in that including：
UE reports CSI after receiving CSI-RS；
ENB determines that beam direction obtains corresponding beam set according to the CSI or high-rise configurations, from wave beam
M wave beam is constructed in set as pre-coding matrix collection, M is definite value or fed back by eNB according to UE
The variable value that CSI is obtained；
The pre-coding matrix that eNB is concentrated according to the pre-coding matrix carries out PDSCH precodings and DMRS
Precoding, the DMRS precodings include：M DMRS port is selected, the M DMRS is generated
The sequence of port, then the M pre-coding matrix with the pre-coding matrix collection is multiplied respectively；
UE passes through DMRS demodulating datas.
2. according to the method described in claim 1, it is characterised in that：
The PDSCH precodings include：
Data are divided into multiple set after being pre-processed according to established rule, by the pre-coding matrix collection
In pre-coding matrix cycle assignment gives each set successively, finally belong to the data of identity set with being allocated
Pre-coding matrix be multiplied, it is described pretreatment at least include layer mapping handle.
3. method according to claim 2, it is characterised in that the pretreatment is specially：
Data are carried out after layer mapping, then are multiplied with a unitary matrice or a circular matrix, or successively with
One unitary matrice is multiplied with a circular matrix.
4. according to the method in claim 2 or 3, it is characterised in that：The established rule is following
Any one in four kinds：
The data being mapped to every time in N number of data symbol belong to identity set；
The data being mapped to every time in N number of PRB belong to identity set；
The data being mapped to every time in N number of subcarrier belong to identity set；
The data being mapped to every time in N number of symbol belong to identity set；
Above-mentioned N is positive integer.
5. method according to claim 4, it is characterised in that：
CSI is reported after the UE receptions CSI-RS to be included：ENB sends K CSI-RS, each CSI-RS
For a broadband beams, with specifically vertically and horizontally, K is positive integer；UE is from K broadband
Optimal beam direction is selected in wave beam, feeding back optimal beam direction to eNB indicates CRI and this optimal ripple
Shu Fangxiang RI and CQI；
The CRI that eNB feeds back according to UE determines that beam direction obtains corresponding beam set, from beam set
M wave beam of middle construction is as pre-coding matrix, and M is definite value or obtained by the eNB CRI fed back according to UE
The variable value arrived.
6. method according to claim 4, it is characterised in that：
CSI is reported after the UE receptions CSI-RS to be included：ENB sends the CSI-RS that a port is 2K,
Comprising K narrow-band beam, each narrow-band beam has specifically vertically and horizontally, and K is positive integer；
UE selects optimal beam direction from K narrow-band beam, to eNB feed back optimal beam direction code word and
The RI and CQI in this optimal beam direction；
The optimal beam direction code word that eNB feeds back according to UE determines that beam direction obtains corresponding beam set,
M wave beam is constructed from beam set as pre-coding matrix, M is definite value or anti-according to UE by eNB
The variable value that the optimal beam direction code word of feedback is obtained.
7. method according to claim 4, it is characterised in that：
CSI is reported after the UE receptions CSI-RS to be included：ENB sends non-precoded CSI-RS；UE
RI and CQI is fed back to eNB according to non-precoded CSI-RS；
ENB obtains corresponding wave beam according to the UE RI fed back and CQI and high-rise configuration precoding set
Set, constructs M wave beam as pre-coding matrix from beam set, M for definite value or by eNB according to
The variable value that the RI of UE feedbacks is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012164.5A CN106961296A (en) | 2016-01-08 | 2016-01-08 | A kind of open loop multi-antenna sending method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012164.5A CN106961296A (en) | 2016-01-08 | 2016-01-08 | A kind of open loop multi-antenna sending method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106961296A true CN106961296A (en) | 2017-07-18 |
Family
ID=59480693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610012164.5A Withdrawn CN106961296A (en) | 2016-01-08 | 2016-01-08 | A kind of open loop multi-antenna sending method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106961296A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123766A (en) * | 2017-12-29 | 2018-06-05 | 富华科精密工业（深圳）有限公司 | Information transferring method under system management server and cloud Radio Access Network |
| CN108988921A (en) * | 2017-08-11 | 2018-12-11 | 电信科学技术研究院有限公司 | A kind of instruction of beam information determines method and device, communication system |
| CN111108707A (en) * | 2017-09-22 | 2020-05-05 | 高通股份有限公司 | Signaling design for non-PMI based CSI feedback |
| CN113196685A (en) * | 2018-12-24 | 2021-07-30 | 高通股份有限公司 | Coefficient determination for measurement report feedback in multi-layer beamforming communication |
| CN113301602A (en) * | 2021-05-13 | 2021-08-24 | 深圳市云之声科技有限公司 | High-performance 5G intelligent gateway |
| US12021585B2 (en) | 2018-12-24 | 2024-06-25 | Qualcomm Incorporated | Coefficient determination for measurement report feedback in multi-layer beamformed communications |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158319A (en) * | 2010-02-12 | 2011-08-17 | 中兴通讯股份有限公司 | Method and device for pre-encoding based on hybrid multiplex demodulation reference symbols |
| CN102469496A (en) * | 2010-11-05 | 2012-05-23 | 大唐移动通信设备有限公司 | Method and device for reporting channel quality information |
| CN102843325A (en) * | 2011-06-22 | 2012-12-26 | 中兴通讯股份有限公司 | Method and system for processing reference signal of an open loop MIMO (multiple-input multiple-output) system |
| CN103782560A (en) * | 2011-03-30 | 2014-05-07 | 华为技术有限公司 | Method and apparatus for open loop transmission in a multiple antenna wireless communication system |
| CN103812546A (en) * | 2012-11-07 | 2014-05-21 | 华为技术有限公司 | Reference signal mapping method based on antenna array, device and system |
| CN103973409A (en) * | 2013-01-31 | 2014-08-06 | 富士通株式会社 | Pre-coding device and transmitter with same |
| CN104396152A (en) * | 2012-06-22 | 2015-03-04 | 三星电子株式会社 | Communication method and apparatus using beamforming in a wireless communication system |
-
2016
- 2016-01-08 CN CN201610012164.5A patent/CN106961296A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158319A (en) * | 2010-02-12 | 2011-08-17 | 中兴通讯股份有限公司 | Method and device for pre-encoding based on hybrid multiplex demodulation reference symbols |
| CN102469496A (en) * | 2010-11-05 | 2012-05-23 | 大唐移动通信设备有限公司 | Method and device for reporting channel quality information |
| CN103782560A (en) * | 2011-03-30 | 2014-05-07 | 华为技术有限公司 | Method and apparatus for open loop transmission in a multiple antenna wireless communication system |
| CN102843325A (en) * | 2011-06-22 | 2012-12-26 | 中兴通讯股份有限公司 | Method and system for processing reference signal of an open loop MIMO (multiple-input multiple-output) system |
| CN104396152A (en) * | 2012-06-22 | 2015-03-04 | 三星电子株式会社 | Communication method and apparatus using beamforming in a wireless communication system |
| CN103812546A (en) * | 2012-11-07 | 2014-05-21 | 华为技术有限公司 | Reference signal mapping method based on antenna array, device and system |
| CN103973409A (en) * | 2013-01-31 | 2014-08-06 | 富士通株式会社 | Pre-coding device and transmitter with same |
Non-Patent Citations (2)
| Title |
|---|
| SAMSUNG: "Elevation Beamforming/Full-Dimension (FD) MIMO for LTE", 《3GPP TSG RAN MEETING #70 RP-151845》 * |
| ZTE, CMCC: "Consideration on Rel-13 enhancements for TDD EB/FD-MIMO", 《3GPP TSG RAN MEETING #68 RP-150739》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988921A (en) * | 2017-08-11 | 2018-12-11 | 电信科学技术研究院有限公司 | A kind of instruction of beam information determines method and device, communication system |
| US11025330B2 (en) | 2017-08-11 | 2021-06-01 | China Academy Of Telecommunications Technology | Method for indicating and determining beam information, device, and communication system |
| CN111108707A (en) * | 2017-09-22 | 2020-05-05 | 高通股份有限公司 | Signaling design for non-PMI based CSI feedback |
| CN111108707B (en) * | 2017-09-22 | 2022-10-18 | 高通股份有限公司 | Signaling design for non-PMI based CSI feedback |
| US12107647B2 (en) | 2017-09-22 | 2024-10-01 | Qualcomm Incorporated | Signaling design for non-PMI based CSI feedback |
| CN108123766A (en) * | 2017-12-29 | 2018-06-05 | 富华科精密工业（深圳）有限公司 | Information transferring method under system management server and cloud Radio Access Network |
| CN113196685A (en) * | 2018-12-24 | 2021-07-30 | 高通股份有限公司 | Coefficient determination for measurement report feedback in multi-layer beamforming communication |
| CN113196685B (en) * | 2018-12-24 | 2024-04-09 | 高通股份有限公司 | Coefficient determination for measurement report feedback in multi-layer beamforming communications |
| US12021585B2 (en) | 2018-12-24 | 2024-06-25 | Qualcomm Incorporated | Coefficient determination for measurement report feedback in multi-layer beamformed communications |
| CN113301602A (en) * | 2021-05-13 | 2021-08-24 | 深圳市云之声科技有限公司 | High-performance 5G intelligent gateway |
| CN113301602B (en) * | 2021-05-13 | 2022-02-08 | 深圳市云之声科技有限公司 | 5G intelligent gateway |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102468684B1 (en) | Apparatus and method for using codebook in wireless communication system | |
| JP6862526B2 (en) | Methods and equipment for reduced feedback FD-MIMO | |
| CN108352876B (en) | High rank codebook for advanced wireless communications | |
| KR102442249B1 (en) | Method and apparatus for explicit csi reporting in advanced wireless communication systems | |
| KR102404935B1 (en) | Codebook for CSI Reporting in Improved Wireless Communication System | |
| CN106664192B (en) | Method and apparatus for configuring port numbers of CSI-RS antenna ports | |
| CN107636984B (en) | Method and apparatus for operating MIMO measurement reference signals and feedback | |
| KR102524587B1 (en) | Resource allocation device and method in large-scale antenna system | |
| US10411868B2 (en) | Method and apparatus for channel state information (CSI) reporting | |
| JP6279633B2 (en) | Codebook subset limited bitmap transmission / reception method and apparatus | |
| EP2568622B1 (en) | Method and device for processing codebook subset restriction | |
| CN106464319B (en) | The method and apparatus for calculating feedback information for 3D MIMO in a wireless communication system | |
| CN106961296A (en) | A kind of open loop multi-antenna sending method | |
| CN109983712A (en) | Method and apparatus for realizing multiresolution CSI report in Advanced wireless communication system | |
| CN108292943A (en) | Method and apparatus for sending and receiving feedback signal in a wireless communication system | |
| CN106465408B (en) | The method and apparatus of multi-subscriber dispatching in mimo system | |
| JP2019532564A (en) | Method and apparatus for acquiring downlink and uplink channel state information | |
| EP3402105B1 (en) | Method by which terminal receives downlink signal from base station in wireless communication system, and device therefor | |
| WO2017188693A1 (en) | Method for transmitting and receiving channel state information in multi-antenna wireless communication system, and device therefor | |
| KR20170033247A (en) | Methods and apparatus for signaling reference signal resource indicator in wireless communication systems | |
| WO2014198037A1 (en) | Two-dimensional discrete fourier transform (2d-dft) based codebook for elevation beamforming | |
| US20180278301A1 (en) | Method for reporting reference signal indicator to base station by terminal in wireless communication system and apparatus therefor | |
| CN108028692A (en) | The method and its equipment of the bit size of order designator are determined in a wireless communication system | |
| WO2014038832A1 (en) | Efficient feedback transmission method in multi-antenna wireless communication system and device for same | |
| EP3406033B1 (en) | Method and apparatus for channel state information (csi) reporting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170718 |
|
| WW01 | Invention patent application withdrawn after publication |