CN104270180B - User equipment matching method and device - Google Patents
User equipment matching method and device Download PDFInfo
- Publication number
- CN104270180B CN104270180B CN201410478035.6A CN201410478035A CN104270180B CN 104270180 B CN104270180 B CN 104270180B CN 201410478035 A CN201410478035 A CN 201410478035A CN 104270180 B CN104270180 B CN 104270180B
- Authority
- CN
- China
- Prior art keywords
- wave beam
- user equipment
- numbering
- spacing
- difference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
Abstract
The embodiment of the present application provides a kind of user equipment matching method and device, and applied in multiuser mimo system, methods described includes：Base station determines the corresponding wave beam of user equipment in the wave beam of formation；Judge whether the correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing；When correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing, determine any two user equipment as pairing user equipment；When correlation between the corresponding wave beam of any two user equipment is smaller than default spacing, determine any two user equipment without pairing.The embodiment of the present application effectively inhibits the interference between pairing user.
Description
Technical field
The application is related to wireless communication technology field, more particularly to a kind of user equipment matching method and dress
Put.
Background technology
In a wireless communication system, MIMO (Multiple-Input Multiple-Output, multiple-input and multiple-output) leads to
Often be divided into SU-MIMO (Single-User MIMO, single user multiple-input and multiple-output) and MU-MIMO (Mulit-User MIMO,
Multi-user's multiple-input and multiple-output).SU-MIMO refers to the point-to-point antenna link of base station and unique user, and MU-MIMO is then many
Individual user equipment uses identical running time-frequency resource and a base station communication, is adopted compared to SU-MIMO, MU-MIMO in user equipment
In the case of with few antenna low cost, you can keep MIMO multiplexing advantage.It is to refer to energy in MU-MIMO to match user equipment
Enough use the user equipment of identical running time-frequency resource.
When setting up MU-MIMO, network side needs to carry out multi-user installation pairing first, to determine which user equipment can
To use identical running time-frequency resource, still, inventor has found under study for action, there is interference between pairing user equipment, if matched somebody with somebody
To improper, it can more increase the interference between pairing user equipment, so as to influence MIMO spatial multiplexing gain, therefore, how accurately
Realize that user equipment is matched, be very important for MU-MUMO.
The content of the invention
In view of this, this application provides a kind of user equipment matching method and device, to reduce in MU-MIMO, match somebody with somebody
Influence to the interference between user to spatial multiplexing gain.
To achieve the above object, the application provides following technical scheme：
First aspect is there is provided a kind of user equipment matching method, applied in multiuser mimo system, institute
The method of stating includes：
Base station determines the corresponding wave beam of user equipment in the wave beam of formation；
Judge whether the correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing；
When correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing, institute is determined
Any two user equipment is stated as pairing user equipment；
When correlation between the corresponding wave beam of any two user equipment is smaller than default spacing, institute is determined
Any two user equipment is stated without pairing.
In the first possible implementation of the first aspect, the base station determines user in the wave beam of formation
The corresponding wave beam of equipment includes：
Obtain pre-coding matrix instruction and order instruction that user equipment is sent；
According to the pre-coding matrix instruction and the order instruction, the corresponding wave beam of the user equipment is determined.
With reference to the first possible implementation of the first aspect, second in the first aspect may realization side
In formula, the base station includes 8 antennas；The pre-coding matrix instruction includes the first matrix and numbered and the second matrix coder,
The product of first matrix and second matrix is pre-coding matrix；
It is described according to the pre-coding matrix instruction and the order instruction, determine the corresponding wave beam bag of the user equipment
Include：
According to the order instruction, the data flow number of the user equipment transmitted in parallel is determined；According to first matrix
Numbering and second matrix numbering, determine the corresponding wave beam of each data flow of the user equipment, and it is in institute
State the wave beam numbering in the wave beam of base station formation.
With reference to the first aspect or any of the above-described kind of possible implementation of the first aspect, in the first aspect
The third possible implementation in, different beams using wave beam numbering make a distinction, wave beam numbering value be 0,1,2 ...,
Wave beam numbering difference represents the correlation spacing between wave beam, and the default spacing is preset by the following method：
For any two wave beam, it is determined that on a wave beam maximum antenna gain direction, the antenna gain between wave beam
Difference is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, and the antenna gain difference between wave beam is not
During less than the pre-determined threshold, the numbering difference between wave beam；
From the numbering difference of the multiple any two wave beams obtained, maximum numbering difference is selected as between described preset
Away from；
Whether the correlation spacing judged between the corresponding wave beam of any two user equipment is more than default spacing bag
Include：
Judge whether the wave beam numbering difference of any two user equipment correspondence wave beam is more than the default spacing.
With reference to second of the first aspect or the first aspect may implementation or the first aspect the
Three kinds of possible implementations, in the 5th kind of possible implementation of the first aspect, different beams using wave beam number into
Row is distinguished, and wave beam numbering value is 0,1,2 ..., and wave beam numbering difference represents the correlation spacing between wave beam；
Whether the correlation spacing judged between the corresponding wave beam of any two user equipment is more than default spacing bag
Include：
Judge in the corresponding wave beam of any two user equipment, whether wave beam numbering difference is at least above one of wave beam
Corresponding default spacing；
Wherein, the corresponding default spacing of the wave beam is preset by the following method：
For any one wave beam, it is determined that on its maximum antenna gain direction, with its antenna gain difference closest in advance
Another wave beam of gating limit, and on another described wave beam maximum antenna gain direction, the antenna gain between wave beam is poor
When value is not less than the pre-determined threshold, the numbering difference between wave beam, and it regard the numbering difference as the default of the wave beam
Spacing.
With reference to the first aspect or any of the above-described kind of possible implementation of the first aspect, in the first aspect
The 5th kind of possible implementation in, when the corresponding wave beam number of the determination user equipment includes multiple；
Whether the correlation spacing judged between the corresponding wave beam of any two user equipment is more than default spacing bag
Include：
Judge that each corresponding wave beam of one of user equipment is set with another user in any two user equipment
Whether the correlation spacing between each standby corresponding wave beam is all higher than default spacing.
Second aspect is there is provided a kind of user equipment contrast means, applied in multiuser mimo system
Base station, described device includes：
Wave beam determining module, in the wave beam that is formed in base station, determining the corresponding wave beam of user equipment；
Judge module, for judging it is pre- whether the correlation spacing between the corresponding wave beam of any two user equipment is more than
If spacing；
First pairing determining module, for determining the corresponding wave beam of any two user equipment in the judge module
Between correlation spacing when being more than default spacing, determine any two user equipment as pairing user equipment；
Second pairing determining module, for determining the corresponding wave beam of any two user equipment in the judge module
Between correlation when being smaller than default spacing, determine any two user equipment without pairing.
In the first possible implementation of the second aspect, the wave beam determining module includes：
Feedback information acquiring unit, pre-coding matrix instruction and order instruction for obtaining user equipment transmission；
Wave beam determining unit, for according to the pre-coding matrix instruction and the order instruction, determining that the user sets
Standby corresponding wave beam.
With reference to the first possible implementation of the second aspect, second in the second aspect may realization side
In formula, the base station includes 8 antennas；The pre-coding matrix instruction includes the first matrix and numbered and the second matrix coder,
The product of first matrix and second matrix is pre-coding matrix；
The wave beam determining module includes：
Number determining unit, for according to the order instruction, determining the data flow number of the user equipment transmitted in parallel；
Numbering determining unit, for being numbered according to first matrix numbering and second matrix, determines the use
The corresponding wave beam of each data flow of family equipment, and its wave beam numbering in the wave beam that the base station is formed.
With reference to the second aspect or any of the above-described kind of possible implementation of the second aspect, in the second aspect
The third possible implementation in, different beams using wave beam numbering make a distinction, wave beam numbering value be 0,1,2 ...,
Wave beam numbering difference represents the correlation spacing between wave beam, and described device also includes：
First default spacing setting module, for for any two wave beam, it is determined that in a wave beam maximum antenna gain
On direction, the antenna gain difference between wave beam is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction,
When antenna gain difference between wave beam is not less than the pre-determined threshold, the numbering difference between wave beam；From multiple obtained
In the numbering difference of two wave beams of anticipating, the maximum numbering difference of selection is used as the default spacing；
The judge module specifically for：
Judge whether the wave beam numbering difference of any two user equipment correspondence wave beam is more than the default spacing.
With reference to the second aspect or the second aspect the first possible implementation or the second aspect
The third possible implementation of two kinds of possible implementations or the second aspect, in the 4th kind of possibility of the second aspect
In implementation, different beams are made a distinction using wave beam numbering, and wave beam numbering value is 0,1,2 ..., wave beam numbering difference
Represent the correlation spacing between wave beam；
The judge module specifically for：
Judge in the corresponding wave beam of any two user equipment, whether wave beam numbering difference is at least above one of wave beam
Corresponding default spacing；
Described device also includes：
Second default spacing setting module, for for any one wave beam, it is determined that on its maximum antenna gain direction,
With its antenna gain difference closest to pre-determined threshold another wave beam, and in another described wave beam maximum antenna gain direction
On, when antenna gain difference between wave beam is not less than the pre-determined threshold, the numbering difference between wave beam, and by the numbering
Difference as the wave beam default spacing.
With reference to the second aspect or any of the above-described kind of possible implementation of the second aspect, in the second aspect
The 5th kind of possible implementation in, when the corresponding wave beam number of the determination user equipment includes multiple；
The judge module is specifically for judging that one of user equipment is corresponding each in any two user equipment
Whether the correlation spacing between individual wave beam each wave beam corresponding with another user equipment is all higher than default spacing.
To sum up, in the embodiment of the present application, in the wave beam that base station is formed, it is first determined the corresponding wave beam of user equipment, lead to
Cross whether the spacing compared between the corresponding wave beam of any two user equipment is more than default spacing, in any two user equipment
Spacing between corresponding wave beam is more than default spacing, it may be determined that any two user equipment can be matched, in office
Between the corresponding wave beam of two user equipmenies of meaning when being smaller than default spacing, determine any two user equipment without
Pairing.By comparing the corresponding wave beam of any two user equipment, thus correlation is stronger, i.e., it is less than between wave beam default
Any two user equipment of spacing is without pairing, it is to avoid it is bigger dry that the stronger user equipment pairing of correlation is brought
Disturb, therefore can effectively suppress to match the interference between user, improve MU-MIMO gains.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of application, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
A kind of flow chart of user equipment matching method one embodiment that Fig. 1 provides for the embodiment of the present application；
A kind of flow chart for user equipment matching method another embodiment that Fig. 2 is provided for the embodiment of the present application.
A kind of structural representation of user equipment contrast means one embodiment that Fig. 3 provides for the embodiment of the present application；
A kind of structural representation for user equipment contrast means another embodiment that Fig. 4 is provided for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of the application protection.
The technical method of the application, applied to utilization multi-user's multiple-input and multiple-output (MU-MIMO, Mulit-User
Multiple-Input Multiple-Output) technology various wireless communication systems in, such as Long Term Evolution (LTE, Long
Term Evolution) system etc..
User equipment (UE, User Equipment) can also be referred to as user terminal (UT, User Terminal), shifting
Dynamic terminal (MT, Mobile Terminal), mobile station (MS, Mobile Station) etc..
Base station, can refer to the base station transceiver (BTS, Base Transceiver Station) in GSM or CDMA,
Can also be the base station (being referred to as Node B) in WCDMA, can also be in LTE evolved base station (be referred to as eNB or e-NodeB,
evolution NodeB).One or more cells (cell) may be supported/managed in one base station, and user equipment needs and network
During communication, it will select a cell to initiate network insertion.
Pairing user refers to that the user equipment of identical running time-frequency resource can be used in MU-MIMO.User's pairing refers to use
The pairing of family equipment.
In MU-MIMO technologies, prior art, in order to reduce the interference between pairing user, generally using close-to zero beam
Criterion is shaped, by matching the channel quadrature between user, to suppress to match the interference between user.Shaped using close-to zero beam
When calculating the wave beam weight of multi-user, it is necessary to which descending channel information is used as input during criterion.If the down channel letter obtained
Breath is inaccurate, can not be completely orthogonal between pairing user, and MU-MIMO gain can be caused to decline.
In the embodiment of the present application, in the wave beam that base station is formed, it is first determined the corresponding wave beam of user equipment, by comparing
Whether the spacing between the corresponding wave beam of any two user equipment is more than default spacing, corresponding in any two user equipment
Spacing between wave beam is more than default spacing, it may be determined that any two user equipment can be matched, in any two
Between the corresponding wave beam of user equipment when being smaller than default spacing, determine any two user equipment without pairing.
By comparing the corresponding wave beam of any two user equipment, it may be determined that go out the spatial character and sky of any two user equipment
Between position relationship be less than so that correlation is stronger, i.e., between wave beam any two user equipment of default spacing without
Pairing, it is to avoid the bigger interference of correlation stronger user equipment pairing band, thus can effectively suppress to match user it
Between interference, improve MU-MIMO gains.
Technical scheme is described in detail below in conjunction with the accompanying drawings.
A kind of flow chart of user equipment matching method one embodiment that Fig. 1 provides for the embodiment of the present application, is applied to
In MU-MIMO communication systems, this method can include following steps：
101：Base station determines the corresponding wave beam of user equipment in the wave beam of formation.
102：Judge whether the correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing.
103：When correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing, really
The fixed any two user equipment is used as pairing user equipment.
104：When correlation between the corresponding wave beam of any two user equipment is smaller than default spacing, really
The fixed any two user equipment is not as pairing user equipment.
Wherein, can be true when the correlation spacing between the corresponding wave beam of any two user equipment is equal to default spacing
The fixed any two user equipment is as pairing user equipment or determines any two user equipment without pairing.
Wave beam refers to the electromagnetic wave emitted by antenna the upper shape formed at the earth's surface.According to wave beam in space
Sensing it is different, multiple wave beams can be made a distinction using wave beam numbering, and wave beam numbering value is 0,1,2 ..., for example with
3GPP (3rd Generation Partnership Project, the 3rd generation partner program) base station as defined in agreement includes 8
Exemplified by root antenna, in technical scheme, the wave beam number that 8 antennas can be formed after code book is weighted is 32,
Wave beam numbering can be set to 0,1,2 ... 31.
In a kind of possible implementation, in order to improve matching efficiency, the corresponding ripple of any two user equipment is judged
Whether correlation spacing between beam is more than default spacing can be by comparing the volume of the corresponding wave beam of any two user equipment
Number difference is determined.
Different beams are made a distinction using wave beam numbering, and when wave beam numbering value is 0,1,2 ..., wave beam numbering difference can
To represent the correlation spacing between wave beam, the default spacing is preset by the following method：
For any two wave beam, it is determined that in a wave beam maximum antenna gain (unit：DB, decibel) on direction, wave beam
Between antenna gain difference closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, between wave beam
When antenna gain difference is not less than the pre-determined threshold, the numbering difference between wave beam；
From the numbering difference of the multiple any two wave beams obtained, maximum numbering difference is selected as between described preset
Away from.
Due to different beams, its shape may be different, when the antenna gain between wave beam is equal to pre-determined threshold, obtain
Numbering difference may be different.It is accurate in order to match, from the numbering difference for calculating obtained multiple any two wave beams, select number
Spacing is preset in the maximum conduct of value.
In alternatively possible implementation, each wave beam can pre-set a default spacing.To arbitrary
When two wave beams are judged, default spacing of the wave beam numbering difference at least above one of wave beam.Certainly, in order to enter
One step improves accuracy, and it is corresponding default that wave beam numbering difference needs to be all higher than each wave beam in arbitrary two wave beams
Spacing.
The corresponding default spacing of wave beam can be preset in the following manner：
For any one wave beam, it is determined that on its maximum antenna gain direction, with its antenna gain difference closest in advance
Another wave beam of gating limit, and on another described wave beam maximum antenna gain direction, the antenna gain between wave beam is poor
When value is not less than the pre-determined threshold, the numbering difference between wave beam, and it regard the numbering difference as the default of the wave beam
Spacing.
, can also be true by comparing the antenna gain of wave beam when memory space is enough in another possible implementation
It is fixed, that is, on the maximum antenna gain direction for judging the corresponding wave beam of each user equipment in any two user equipment,
Whether the difference of the antenna gain of the corresponding wave beam of any two user equipment is more than pre-determined threshold.If it is, can be true
Determine the correlation spacing between the corresponding wave beam of any two user equipment and be more than default spacing, if it is not, then can determine to appoint
Correlation between the corresponding wave beam of two user equipmenies of meaning is smaller than default spacing.The antenna gain of wave beam can be true in advance
Determine and store.
Certainly, because any two user equipment is in the maximum gain antenna direction of the corresponding wave beam of any one user equipment
On, the antenna gain difference of the corresponding wave beam of any two user equipment is relatively.Therefore, in the not high field of accuracy requirement
Under scape, the maximum antenna gain of the corresponding wave beam of any one user equipment in any two user equipment can also be only judged
On direction, whether the difference of the antenna gain of the corresponding wave beam of any two user equipment is more than pre-determined threshold.
In the embodiment of the present application, base station is in its wave beam formed, it is first determined goes out the corresponding wave beam of user equipment, passes through
The corresponding wave beam of user equipment is determined, spatial character and the locus of user equipment can be known, if user equipment pair
The wave beam correlation answered is smaller than default spacing, shows that the correlation between user equipment is stronger, if as setting up MU-
MIMO pairing user equipment, it will increase pairing user between interference, therefore the stronger user equipment of correlation not as
User equipment is matched, and wave beam correlation spacing is more than default spacing, shows that the correlation between user equipment is relatively weak, then
Pairing user equipment can be used as.By the spatial coherence according to user equipment, MU-MIMO user equipment pairing is realized,
The interference between pairing user, especially in the system that can not accurately obtain channel information, such as FDD can be reduced
(Frequency Division Duplexing, FDD) system, interference suppressioning effect is more obvious.
Wherein, base station determines the corresponding wave beam of user equipment, can determine user equipment pair according to the feedback of user equipment
The wave beam answered, therefore referring to Fig. 2, a kind of stream of user equipment matching method another embodiment provided for the embodiment of the present application
Cheng Tu, this method can include following steps：
201：Obtain pre-coding matrix instruction and order instruction that user equipment is sent.
202：According to the pre-coding matrix instruction and the order instruction, the corresponding wave beam of the user equipment is determined.
203：Judge whether the correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing.
204：When correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing, really
The fixed any two user equipment is used as pairing user equipment.
205：When correlation between the corresponding wave beam of any two user equipment is smaller than default spacing, really
The fixed any two user equipment is without pairing.
Precoding technique (Precoding) is a kind of utilization by channel information, is entered in transmitting terminal to sending data
A kind of capable preconditioning technique, to adapt to corresponding channel circumstance, systematic function is improved with this.
Pre-coding matrix instruction (PMI, Precoding matrix Indication) and order instruction (RI, Rank
Indication) sent by user equipment to base station, base station can determine pre-coding matrix by PMI, can be with by RI
Order is determined, order illustrates the number of user equipment transmitted in parallel data flow.Base station is according to PMI and RI, it may be determined that go out use
The data flow number of family equipment, and the corresponding wave beam of each data flow and its wave beam in the wave beam that base station is formed are compiled
Number, the i.e. corresponding different beam position of different wave beam numberings.Wherein, because the corresponding wave beam of different data streams may be identical
May be different.Therefore, according to the corresponding wave beam of each data flow, it may be determined that go out the corresponding wave beam of user equipment.
Because user equipment may correspond to multiple wave beams, therefore judge between the corresponding wave beam of any two user equipment
It is specifically to judge that one of user equipment is corresponding in any two user equipment that whether correlation spacing, which is more than default spacing,
Whether the correlation spacing between each wave beam each wave beam corresponding with another user equipment is all higher than default spacing.
It is of course also possible to not consider whether the corresponding wave beam of customer equipment data stream is identical, directly judges user equipment
The corresponding wave beam of each data flow, therefore, when the corresponding wave beam number of user equipment is more than 1, the judgement any two
It can be specifically to judge any two user that whether the correlation spacing between the corresponding wave beam of user equipment, which is more than default spacing,
The corresponding wave beam of each data flow of one of user equipment and each data flow pair of another user equipment in equipment
Whether the correlation spacing between the wave beam answered is more than default spacing.
Such as the first user equipment assumes correspondence wave beam 1 and wave beam 2, and second user equipment assumes correspondence wave beam 5 and wave beam
6, then need to be more than default spacing in the correlation spacing respectively between wave beam 5 and wave beam 6 of wave beam 1, and wave beam 2 respectively with ripple
When correlation spacing between beam 5 and wave beam 6 is more than default spacing, the first user equipment and second user equipment just can conducts
User equipment is matched, otherwise without pairing.Wherein, judge between the correlation between the corresponding wave beam of any two user equipment
Away from whether being more than the specific implementation of default spacing and may refer to described in above-described embodiment, will not be repeated here.
In the present embodiment, base station is fed back according to user equipment PMI and RI, it may be determined that go out the wave beam in its formation
In, the corresponding wave beam of user equipment, by whether comparing the correlation spacing between the corresponding wave beam of any two user equipment
More than default spacing, when the correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing,
Determine any two user equipment as pairing user equipment；Between the corresponding wave beam of any two user equipment
Correlation when being smaller than default spacing, determine any two user equipment without pairing.Can by the present embodiment
Suppress to match the interference between user with effective.
Exemplified by including 8 antennas by base station in 3GPP agreements below, technical scheme is described in detail, it is necessary to
What is illustrated is that the application is not limited to 8 antennas.8 antenna formation wave beams are narrower, easily make a distinction user equipment.
When base station includes 8 antennas, it usually needs 8 CSI-RS (Channel-State Information of configuration
Reference signal, channel state information reference signals) port, PDSCH (Physical Downlink can be obtained
Shared Channel, Physical Downlink Shared Channel) enhancing space feedback in transmission mode 9, this enhancing space feedback master
To include four subarrays for base station, each subarray includes 2 cross polarised antennas, and each subarray is homogenous linear battle array
Row.Weighting can embody spatial character between polarised direction identical subarray, contribute to MU-MIMO scheduling, can predict
Cross polarization in multi-user interference, subarray brings enhancing diversity effect.According to these criterions, 8 CSI-RS ports
The pre-coding matrix W of PMI feedbacks can be decomposed into the product of 2 matrixes, the first matrix W 1 and the second matrix W 2, W=W1*
The weighting of W2, W1 correspondence uniform linear array, different W1 weights can form space and point to different wave beams.Therefore PMI bags
The first matrix numbering and the second matrix numbering are included, the first matrix and the second matrix are found for indexing.
8 antennas that base station includes can form 32 wave beams, and numbering is respectively 0,1,2 ... 31.And then can draw
The sensing schematic diagram of 32 wave beams, each wave beam is on being differently directed, the different antenna gain of correspondence.
The RI fed back according to user equipment, it may be determined that the value of order, and then the corresponding wave beam of user equipment can be determined
When number, such as order are 1 or 2, user equipment correspondence wave beam number is 1, wherein, when order is 2, the two data streams pair of user equipment
The wave beam answered is identical, is same wave beam, because the corresponding wave beam of the different data streams of user equipment may be identical, therefore not
With order when, the corresponding wave beam number of user equipment may be identical, and when such as order is 3 or 4, the corresponding wave beam number of user equipment is equal
For 2.
According to the first matrix numbering and the second matrix numbering, it can correspond to and find the first matrix and the second matrix, root
User equipment can be determined in 32 wave beams according to the first matrix and the second matrix, and the corresponding space of each data flow refers to
To different wave beams, the corresponding wave beam numbering of user equipment may thereby determine that out.
Wherein, the first matrix numbering, the second matrix numbering and wave beam numbering referring to table 1 mapping table, with reflecting as follows
Penetrate relation：
Table 1
, can be fast by the first matrix numbering and the second matrix numbering of the mapping table of table 1, and user equipment feedback
Speed determines the numbering of the corresponding wave beam of user equipment, and such as the first matrix numbering includes the 2, second matrix and numbered when including 4, can
To determine the wave beam that the corresponding wave beam of user equipment is 17 as numbering.
After determining the corresponding wave beam of user equipment, by comparing the correlation spacing of any two user equipment, really
Whether the fixed any two user equipment can match.When correlation spacing is more than default spacing, any two is determined
User equipment is used as pairing user equipment；When correlation is smaller than default spacing, any two user equipment is determined
Without pairing.
Wherein it is possible to represent correlation spacing using wave beam numbering difference, default spacing is preset by the following method：
For any two wave beam, it is determined that on a wave beam maximum antenna gain direction, the antenna gain between wave beam
Difference is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, and the antenna gain difference between wave beam is not
During less than the pre-determined threshold, the numbering difference between wave beam；
From the numbering difference of the multiple any two wave beams obtained, maximum numbering difference is selected as between described preset
Away from.
Therefore, if the numbering difference between the corresponding wave beam of any two user equipment is more than the default spacing, appoint
Two user equipmenies of meaning can be matched, if less than the default spacing, without pairing.
Assuming that default spacing is 10, if the wave beam numbering of the first user equipment correspondence wave beam is 5, wave beam numbering is corresponded to
Second user equipment between 0~15 and 27~31 is stronger with the first user equipment correlation, it is impossible to be matched；
Correspondence wave beam numbers the second user equipment between 16~26, can be matched with the first user equipment.
Certainly, each wave beam can also pre-set a default spacing.Judge to arbitrary two wave beams
When, default spacing of the wave beam numbering difference at least above one of wave beam.In addition, in order to further improve accuracy,
Wave beam numbering difference needs to be all higher than the corresponding default spacing of each wave beam in arbitrary two wave beams.Now wave beam pair
The default spacing answered can then be preset in the following manner：
For any one wave beam, it is determined that on its maximum antenna gain direction, with its antenna gain difference closest in advance
Another wave beam of gating limit, and on another described wave beam maximum antenna gain direction, the antenna gain between wave beam is poor
When value is not less than the pre-determined threshold, the numbering difference between wave beam, and it regard the numbering difference as the default of the wave beam
Spacing.
Alternatively, it is also possible to directly compare the corresponding wave beam of each user equipment in any two user equipment most
On big antenna gain direction, whether the difference of the antenna gain of the corresponding wave beam of any two user equipment is more than pre- gating
Limit, if it is not, then can determine that the correlation of any two user equipment is strong, without pairing, if it is, can determine to appoint
The correlation of two user equipmenies of meaning is relatively weak, can be matched.
Wherein, when user equipment correspondence wave beam number includes multiple, then the corresponding ripple of any two user equipment is judged
It is specifically to judge each corresponding wave beam of any two user equipment that whether the correlation spacing between beam, which is more than default spacing,
Whether correlation spacing each other is all higher than default spacing, if it is, determine any two user equipment as with
To user equipment；If not, determining any two user equipment without pairing.
For foregoing each method embodiment, in order to be briefly described, therefore it is all expressed as to a series of combination of actions, but
It is that those skilled in the art should know, the application is not limited by described sequence of movement, because according to the application, certain
A little steps can be carried out sequentially or simultaneously using other.Secondly, those skilled in the art should also know, be retouched in specification
The embodiment stated belongs to preferred embodiment, necessary to involved action and module not necessarily the application.
A kind of structural representation of user equipment contrast means one embodiment that Fig. 3 provides for the embodiment of the present application, should
Device is applied particularly in the base station in multiuser mimo system, and the device can include：
Wave beam determining module 301, in the wave beam that is formed in base station, determining the corresponding wave beam of user equipment.
Judge module 302, for judging whether the correlation spacing between the corresponding wave beam of any two user equipment is big
In default spacing.
First pairing determining module 303, for determining that any two user equipment is corresponding in the judge module
When correlation spacing between wave beam is more than default spacing, determine any two user equipment as pairing user equipment.
Second pairing determining module 304, for determining that any two user equipment is corresponding in the judge module
When correlation between wave beam is smaller than default spacing, determine any two user equipment without pairing.
When correlation spacing between the corresponding wave beam of any two user equipment is equal to default spacing, it may be determined that described
Any two user equipment is as pairing user equipment or determines any two user equipment without pairing.
Wherein, as a kind of possible implementation, different beams are made a distinction using wave beam numbering, wave beam numbering value
For 0,1,2 ..., wave beam numbering difference represents the correlation spacing between wave beam, and the judge module 302 can be specifically for：
Judge whether the wave beam numbering difference of any two user equipment correspondence wave beam is more than the default spacing.
Now, the device can also include：
First default spacing setting module, for for any two wave beam, it is determined that in a wave beam maximum antenna gain
On direction, the antenna gain difference between wave beam is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction,
When antenna gain difference between wave beam is not less than the pre-determined threshold, the numbering difference between wave beam；From multiple obtained
In the numbering difference of two wave beams of anticipating, the maximum numbering difference of selection is used as the default spacing.
As another possible implementation, the judge module specifically for：
Judge in the corresponding wave beam of any two user equipment, whether wave beam numbering difference is at least above one of wave beam
Corresponding default spacing；
Now, the device can also include：
Second default spacing setting module, for for any one wave beam, it is determined that on its maximum antenna gain direction,
With its antenna gain difference closest to pre-determined threshold another wave beam, and in another described wave beam maximum antenna gain direction
On, when antenna gain difference between wave beam is not less than the pre-determined threshold, the numbering difference between wave beam, and by the numbering
Difference as the wave beam default spacing.
Certainly, in another possible implementation, when memory space is enough, it can also be increased by comparing the antenna of wave beam
Benefit determine, now judge module 302 specifically for：
Judge on the corresponding wave beam maximum antenna gain direction of each user equipment in any two user equipment,
Whether the antenna gain difference of any two user equipment correspondence wave beam is more than pre-determined threshold, if it is, determining described appoint
Correlation spacing between the corresponding wave beam of two user equipmenies of meaning is more than the default spacing, if not, determining described any
Correlation between the corresponding wave beam of two user equipmenies is smaller than the default spacing.
Certainly, because any two user equipment is in the maximum gain antenna direction of the corresponding wave beam of any one user equipment
On, the antenna gain difference of the corresponding wave beam of any two user equipment is relatively.Therefore, in the not high field of accuracy requirement
Under scape, judge module can also only judge the maximum of the corresponding wave beam of any one user equipment in any two user equipment
On antenna gain direction, whether the antenna gain difference of the corresponding wave beam of any two user equipment is more than pre-determined threshold.
Wherein, because the corresponding wave beam of multiple data flows of a user equipment may be identical or different, therefore a use
Family equipment may correspond to multiple wave beams, therefore judge module can be specifically for judging the corresponding wave beam of any two user equipment
Between correlation spacing whether to be more than default spacing be specifically to judge one of user equipment in any two user equipment
It is pre- whether the correlation spacing between corresponding each wave beam each wave beam corresponding with another user equipment is all higher than
If spacing.
In the embodiment of the present application, base station is in its wave beam formed, it is first determined goes out the corresponding wave beam of user equipment, passes through
The corresponding wave beam of user equipment is determined, spatial character and the locus of user equipment can be known, if user equipment pair
The wave beam correlation answered is smaller than default spacing, shows that the correlation between user equipment is stronger, if as setting up MU-
MIMO pairing user equipment, it will increase pairing user between interference, therefore the stronger user equipment of correlation not as
User equipment is matched, and wave beam correlation spacing is more than default spacing, shows that the correlation between user equipment is relatively weak, then
Pairing user equipment can be used as.By the spatial coherence according to user equipment, MU-MIMO user equipment pairing is realized,
The interference between pairing user, especially in the system that can not accurately obtain channel information, such as FDD can be reduced
(Frequency Division Duplexing, FDD) system, interference suppressioning effect is more obvious.
Wherein, base station determines the corresponding wave beam of user equipment, can determine user equipment pair according to the feedback of user equipment
The wave beam answered, therefore referring to Fig. 4, a kind of knot of user equipment contrast means another embodiment provided for the embodiment of the present application
Structure schematic diagram, the device can include wave beam determining module 301, the pairing determining module 303 of judge module 302, first and the
Two pairing determining modules 304, modules function may refer to embodiment illustrated in fig. 3, exist with embodiment illustrated in fig. 3 difference
In in the present embodiment, the wave beam determining module 301 can include：
Feedback information acquiring unit 401, pre-coding matrix instruction and order instruction for obtaining user equipment transmission；
Wave beam determining unit 402, for according to the pre-coding matrix instruction and the order instruction, determining the user
The corresponding wave beam of equipment.
Precoding technique (Precoding) is a kind of utilization by channel information, is entered in transmitting terminal to sending data
A kind of capable preconditioning technique, to adapt to corresponding channel circumstance, systematic function is improved with this.
Pre-coding matrix instruction (PMI, Precoding matrix Indication) and order instruction (RI, Rank
Indication) sent by user equipment to base station, base station can determine pre-coding matrix by PMI, can be with by RI
Order is determined, order illustrates the number of user equipment transmitted in parallel data flow.Base station is according to PMI and RI, it may be determined that go out use
The data flow number of family equipment, and the corresponding wave beam of each data flow and its wave beam in the wave beam that base station is formed are compiled
Number, the i.e. corresponding different beam position of different wave beam numberings.Wherein, because the corresponding wave beam of different data streams may be identical
May be different.Therefore, according to the corresponding wave beam of each data flow, it may be determined that go out the corresponding wave beam of user equipment.
In a practical application, when base station includes 8 antennas；The pre-coding matrix instruction is numbered including the first matrix
And second matrix coder, the product of first matrix and second matrix is pre-coding matrix, described under the scene
Wave beam determining module can include：
Number determining unit, for according to the order instruction, determining the data flow number of the user equipment transmitted in parallel；
Numbering determining unit, for being numbered according to first matrix numbering and second matrix, determines the use
The corresponding wave beam of each data flow of family equipment, and its wave beam numbering in the wave beam that the base station is formed.
Wherein, wave beam numbering can be determined according to above-mentioned table 1.
Wherein, comparing correlation spacing can be by comparing each user equipment pair in any two user equipment
On the maximum antenna gain direction for the wave beam answered, the difference of the antenna gain of the corresponding wave beam of any two user equipment is true
It is fixed, due to having confirmed that wave beam is numbered, compare the corresponding wave beam of any two user equipment antenna gain can by than
Number and determine compared with wave beam.
Assuming that the preset difference value of the wave beam numbering set is 10, if the wave beam numbering of the first user equipment correspondence wave beam is
5, then correspond to wave beam and number second user equipment between 0~15 and 27~31, with the first user equipment correlation compared with
By force, it is impossible to matched；Correspondence wave beam numbers the second user equipment between 16~26, can be carried out with the first user equipment
Pairing.In the hypothesis, it is believed that the corresponding antenna gain difference 10dB of wave beam of wave beam numbering difference 10.
Because user equipment may correspond to multiple wave beams, therefore judge module can be specifically to judge that any two user sets
Phase in standby between each corresponding wave beam of one of user equipment each wave beam corresponding with another user equipment
Whether closing property spacing is all higher than default spacing.
In the present embodiment, base station is fed back according to user equipment PMI and RI, it may be determined that go out the wave beam in its formation
In, the corresponding wave beam of user equipment, by whether comparing the correlation spacing between the corresponding wave beam of any two user equipment
More than default spacing, when the correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing,
Determine any two user equipment as pairing user equipment；Between the corresponding wave beam of any two user equipment
Correlation when being smaller than default spacing, determine any two user equipment without pairing.Can by the present embodiment
Suppress to match the interference between user with effective.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
For, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
It is bright.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there is other identical element in the process including the key element, method, article or equipment.
For convenience of description, it is divided into various units during description apparatus above with function to describe respectively.Certainly, this is being implemented
The function of each unit can be realized in same or multiple softwares and/or hardware during application.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can
Realized by the mode of software plus required common hardware.Based on it is such understand, the technical scheme of the application substantially or
Person says that the part contributed to prior art can be embodied in the form of software product, and the computer software product can be with
It is stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are make it that a computer equipment (can
To be personal computer, server, or network equipment etc.) perform some parts of each embodiment of the application or embodiment
Described method.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the application.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can in other embodiments be realized in the case where not departing from the application protection domain.Therefore, the application will not
It can be intended to be limited to the embodiments shown herein, and be to fit to consistent with principles disclosed herein and features of novelty
Most wide scope.
Claims (8)
1. a kind of user equipment matching method, it is characterised in that applied in multiuser mimo system, methods described
Including：
Base station determines the corresponding wave beam of user equipment in the wave beam of formation；
Judge whether the correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing；
When correlation spacing between the corresponding wave beam of any two user equipment is more than default spacing, it is determined that described
Two user equipmenies anticipate as pairing user equipment；
When correlation between the corresponding wave beam of any two user equipment is smaller than default spacing, it is determined that described
Two user equipmenies anticipate without pairing；
Wherein, different beams are made a distinction using wave beam numbering, and wave beam numbering value is 0,1,2 ..., wave beam numbering difference table
Correlation spacing between oscillography beam；
The default spacing is preset by the following method：
For any two wave beam, it is determined that on a wave beam maximum antenna gain direction, the antenna gain difference between wave beam
Closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, the antenna gain difference between wave beam is not less than
During the pre-determined threshold, the numbering difference between wave beam；
From the numbering difference of the multiple any two wave beams obtained, the maximum numbering difference of selection is used as the default spacing；
Whether the correlation spacing judged between the corresponding wave beam of any two user equipment, which is more than default spacing, includes：
Judge whether the wave beam numbering difference of any two user equipment correspondence wave beam is more than the default spacing；
Or, the corresponding default spacing of the wave beam is preset by the following method：
For any one wave beam, it is determined that on its maximum antenna gain direction, with its antenna gain difference closest to pre- gating
Another wave beam of limit, and on another described wave beam maximum antenna gain direction, the antenna gain difference between wave beam is not
During less than the pre-determined threshold, the numbering difference between wave beam, and using the numbering difference as the wave beam default spacing；
Whether the correlation spacing judged between the corresponding wave beam of any two user equipment, which is more than default spacing, includes：
Judge in the corresponding wave beam of any two user equipment, whether wave beam numbering difference is at least above one of wave beam correspondence
Default spacing.
2. according to the method described in claim 1, it is characterised in that the base station determines user equipment in the wave beam of formation
Corresponding wave beam includes：
Obtain pre-coding matrix instruction and order instruction that user equipment is sent；
According to the pre-coding matrix instruction and the order instruction, the corresponding wave beam of the user equipment is determined.
3. method according to claim 2, it is characterised in that the base station includes 8 antennas；The pre-coding matrix refers to
Show and numbered including the first matrix numbering and the second matrix, the product of first matrix and second matrix is precoding square
Battle array；
It is described according to the pre-coding matrix instruction and the order instruction, determine that the corresponding wave beam of the user equipment includes：
According to the order instruction, the data flow number of the user equipment transmitted in parallel is determined；Numbered according to first matrix
And the second matrix numbering, the corresponding wave beam of each data flow of the user equipment is determined, and it is in the base
Stand formed wave beam in wave beam numbering.
4. the method according to any one of claims 1 to 3, it is characterised in that the corresponding wave beam of the determination user equipment
When number includes multiple；
Whether the correlation spacing judged between the corresponding wave beam of any two user equipment, which is more than default spacing, includes：
Judge each corresponding wave beam of one of user equipment and another user equipment pair in any two user equipment
Whether the correlation spacing between each wave beam answered is all higher than default spacing.
5. a kind of user equipment contrast means, it is characterised in that applied to the base station in multiuser mimo system, institute
Stating device includes：
Wave beam determining module, in the wave beam that is formed in base station, determining the corresponding wave beam of user equipment；
Judge module, between judging the correlation spacing between the corresponding wave beam of any two user equipment whether more than presetting
Away from；
First pairing determining module, between determining the corresponding wave beam of any two user equipment in the judge module
Correlation spacing when being more than default spacing, determine any two user equipment as pairing user equipment；
Second pairing determining module, between determining the corresponding wave beam of any two user equipment in the judge module
Correlation when being smaller than default spacing, determine any two user equipment without pairing；
Wherein, different beams are made a distinction using wave beam numbering, and wave beam numbering value is 0,1,2 ..., wave beam numbering difference table
Correlation spacing between oscillography beam；
Described device also includes：
First default spacing setting module, for for any two wave beam, it is determined that in a wave beam maximum antenna gain direction
On, the antenna gain difference between wave beam is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, wave beam
Between antenna gain difference when being not less than the pre-determined threshold, the numbering difference between wave beam；From multiple any two obtained
In the numbering difference of individual wave beam, the maximum numbering difference of selection is used as the default spacing；
Accordingly, the judge module specifically for：
Judge whether the wave beam numbering difference of any two user equipment correspondence wave beam is more than the default spacing；
Or, described device also includes：
Second default spacing setting module, for for any one wave beam, it is determined that on its maximum antenna gain direction, with it
Antenna gain difference closest to pre-determined threshold another wave beam, and on another described wave beam maximum antenna gain direction,
When antenna gain difference between wave beam is not less than the pre-determined threshold, the numbering difference between wave beam, and by the number difference
It is worth the default spacing as the wave beam；
Accordingly, the judge module specifically for：
Judge in the corresponding wave beam of any two user equipment, whether wave beam numbering difference is at least above one of wave beam correspondence
Default spacing.
6. device according to claim 5, it is characterised in that the wave beam determining module includes：
Feedback information acquiring unit, pre-coding matrix instruction and order instruction for obtaining user equipment transmission；
Wave beam determining unit, for according to the pre-coding matrix instruction and the order instruction, determining the user equipment pair
The wave beam answered.
7. device according to claim 6, it is characterised in that the base station includes 8 antennas；The pre-coding matrix refers to
Show and numbered including the first matrix numbering and the second matrix, the product of first matrix and second matrix is precoding square
Battle array；
The wave beam determining module includes：
Number determining unit, for according to the order instruction, determining the data flow number of the user equipment transmitted in parallel；
Numbering determining unit, for being numbered according to first matrix numbering and second matrix, determines that the user sets
The standby corresponding wave beam of each data flow, and its wave beam numbering in the wave beam that the base station is formed.
8. the device according to any one of claim 5~7, it is characterised in that the corresponding wave beam of the determination user equipment
When number includes multiple；
The judge module is specifically for judging each corresponding ripple of one of user equipment in any two user equipment
Whether the correlation spacing between beam each wave beam corresponding with another user equipment is all higher than default spacing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410478035.6A CN104270180B (en) | 2014-09-18 | 2014-09-18 | User equipment matching method and device |
| PCT/CN2015/083855 WO2016041402A1 (en) | 2014-09-18 | 2015-07-13 | Method and apparatus for pairing user equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410478035.6A CN104270180B (en) | 2014-09-18 | 2014-09-18 | User equipment matching method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104270180A CN104270180A (en) | 2015-01-07 |
| CN104270180B true CN104270180B (en) | 2017-10-17 |
Family
ID=52161681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410478035.6A Active CN104270180B (en) | 2014-09-18 | 2014-09-18 | User equipment matching method and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104270180B (en) |
| WO (1) | WO2016041402A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270180B (en) * | 2014-09-18 | 2017-10-17 | 上海华为技术有限公司 | User equipment matching method and device |
| CN108934019B (en) * | 2017-05-25 | 2021-01-29 | 维沃移动通信有限公司 | Beam information reporting method, base station and terminal |
| CN110166091B (en) | 2018-02-11 | 2021-11-30 | 上海华为技术有限公司 | Multi-user pairing method, device and base station |
| US10651905B1 (en) * | 2018-11-21 | 2020-05-12 | Samsung Electronics Co., Ltd | Eigenvalue decomposition precoding matrix index selection |
| CN113271129B (en) * | 2020-02-14 | 2023-05-30 | 大唐移动通信设备有限公司 | Multi-user pairing method and base station |
| WO2021189237A1 (en) * | 2020-03-24 | 2021-09-30 | 海能达通信股份有限公司 | User pairing method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101374007A (en) * | 2007-08-20 | 2009-02-25 | 中兴通讯股份有限公司 | Method for transmitting signals of multi-user multi-input multi-output system |
| CN102025463A (en) * | 2010-12-20 | 2011-04-20 | 东南大学 | Feedback method of MIMO wireless communication system for down link |
| WO2012065278A1 (en) * | 2010-11-15 | 2012-05-24 | Telefonaktiebolaget L M Ericsson (Publ) | Two-dimensional ue pairing in mimo systems |
| CN103119859A (en) * | 2010-09-26 | 2013-05-22 | Lg电子株式会社 | Method and apparatus for efficient feedback in a wireless communication system that supports multiple antennas |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931441A (en) * | 2009-06-26 | 2010-12-29 | 华为技术有限公司 | Multi-user multi-input multi-output user selection method and device |
| JP5724496B2 (en) * | 2011-03-17 | 2015-05-27 | 富士通株式会社 | Wireless communication system and wireless communication method |
| CN103796319B (en) * | 2014-01-16 | 2017-04-19 | 北京大学 | Frequency reuse method for multi-beam satellite mobile communication down link |
| CN104270180B (en) * | 2014-09-18 | 2017-10-17 | 上海华为技术有限公司 | User equipment matching method and device |
-
2014
- 2014-09-18 CN CN201410478035.6A patent/CN104270180B/en active Active
-
2015
- 2015-07-13 WO PCT/CN2015/083855 patent/WO2016041402A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101374007A (en) * | 2007-08-20 | 2009-02-25 | 中兴通讯股份有限公司 | Method for transmitting signals of multi-user multi-input multi-output system |
| CN103119859A (en) * | 2010-09-26 | 2013-05-22 | Lg电子株式会社 | Method and apparatus for efficient feedback in a wireless communication system that supports multiple antennas |
| WO2012065278A1 (en) * | 2010-11-15 | 2012-05-24 | Telefonaktiebolaget L M Ericsson (Publ) | Two-dimensional ue pairing in mimo systems |
| CN102025463A (en) * | 2010-12-20 | 2011-04-20 | 东南大学 | Feedback method of MIMO wireless communication system for down link |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016041402A1 (en) | 2016-03-24 |
| CN104270180A (en) | 2015-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102332980B1 (en) | Communication method, communication device and system | |
| US10763925B2 (en) | Method and apparatus for reduced feedback MIMO | |
| CN104270180B (en) | User equipment matching method and device | |
| CN107925466B (en) | Codebook-based signal transmission/reception method in multi-antenna wireless communication system | |
| CN107925451B (en) | Codebook-based signal transmitting/receiving method in multi-antenna wireless communication system and apparatus thereof | |
| CN108028684B (en) | Codebook-based signal transmitting/receiving method in multi-antenna wireless communication system and apparatus thereof | |
| JP6456404B2 (en) | Channel state information measuring method, system and device | |
| US10944183B2 (en) | Method for transmitting and receiving channel state information in multi-antenna wireless communication system, and device therefor | |
| US10263671B2 (en) | Method for reporting reference signal indicator to base station by terminal in wireless communication system and apparatus therefor | |
| KR20190029722A (en) | Method and apparatus for uplink transmission and reception in a wireless communication system | |
| US11153050B2 (en) | Method for determining bit size of rank indicator in wireless communication system, and device therefor | |
| US10707937B2 (en) | Method by which terminal receives downlink signal from base station in wireless communication system, and device therefor | |
| US10171154B2 (en) | Method for reporting beam index for 3D MIMO transmission in wireless communication system, and device therefor | |
| JP2011130438A (en) | Transmission method for multi-user mimo in radio communication system, base station and user terminal | |
| US20220052740A1 (en) | Precoding matrix indicating and determining method and communications apparatus | |
| CN112448743B (en) | Method and communication device for channel measurement | |
| US11588524B2 (en) | Channel measurement method and communications apparatus | |
| US8599960B2 (en) | Method and apparatus for multiple input multiple output distributed antenna arrays | |
| CN110557348B (en) | Method and communication device for demodulating data | |
| KR102059970B1 (en) | Method and apparatus for obtaining downlink channel information, and network side apparatus | |
| US10476570B2 (en) | Method by which terminal reports channel status information to base station in wireless communication system, and apparatus therefor | |
| KR102613982B1 (en) | Method and apparatus for designing wmmse beamforming matrix robust against channel error for mu-miso system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |