CN106452537A - Method and device of feedback enhancement in multiuser superposition transmission - Google Patents
Method and device of feedback enhancement in multiuser superposition transmission Download PDFInfo
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- CN106452537A CN106452537A CN201510478236.0A CN201510478236A CN106452537A CN 106452537 A CN106452537 A CN 106452537A CN 201510478236 A CN201510478236 A CN 201510478236A CN 106452537 A CN106452537 A CN 106452537A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/0026—Interference mitigation or co-ordination of multi-user interference
- H04J11/0036—Interference mitigation or co-ordination of multi-user interference at the receiver
- H04J11/004—Interference mitigation or co-ordination of multi-user interference at the receiver using regenerative subtractive interference cancellation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0452—Multi-user MIMO systems
-
- 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
-
- 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
- H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
-
- 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
- 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
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
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- Computer Networks & Wireless Communication (AREA)
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- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method and a device of feedback enhancement in multiuser superposition transmission. The method comprises steps that first channel state information is received from first user equipment; second channel state information is received from matched second user equipment; first pre-coder information used for the first user equipment and second pre-coder information used for the second user equipment are selected based on the first channel state information and the second channel state information. According to the invention, a base station is used to select the proper pre-coder information from the channel state information reported by the matched user equipment, and is used to issue the proper pre-coder information to the matched user equipment, and the adjacent/injured user equipment is used to decode interference signals caused by the far/interfering user equipment based on the pre-coder information, and accuracy of decoding own PDSCH data is improved by removing the interference signals caused by the far/interfering user equipment.
Description
Technical field
Embodiment of the disclosure relate in general to feedback strengthen and in particular to a kind of for using closing
The method and apparatus strengthening feedback in multi-user's superposed transmission of ring precoding.
Background technology
Descending multi-user superposed transmission (Multiuser Superposition Transmission,
Hereinafter referred to as MUST) in, multiple user equipmenies (UE) be paired with the time, frequently
Rate and space layer unseparated in the case of realize it and be more than while one layer data transmission (i.e.,
Using identical spatial pre-coding vector or identical transmission point on identical resource element
Collection scheme).
For example, Fig. 1 illustrates a kind of such environment.In FIG, because UE2 is in cell
Edge and big transmission power is assigned, therefore user equipment 1 (UE1) will seriously be subject to
The interference of user equipment 2 (UE2).The UE1 with advanced receiver is desirable to solve first
Code UE2 signal and and then it is removed from the signal receiving, and and then decoding
Physical Downlink Shared Channel (PDSCH) data of UE1 itself.Therefore, led to by UE2
Interference signal whether can be removed and how many interference can be removed for UE1 solution
Most important for its own data of code.In order to decode the signal of UE2 at UE1, joining
To this two UE (that is, UE1 and UE2) between allocated transmission power information
Most important in the receptor at UE1.In the case of there is no power allocation information,
The interference signal correctly decoding on hand/aggrieved UE (that is, UE1) place will be extremely difficult
, and also can affect removing by a distance/interference that causes of interference UE (that is, UE2) it
UE1 decodes the accuracy of the PDSCH data of its own afterwards.
Presently, there are ten different transmission modes (TM) for LTE definition.Their bases
The concrete structure of antenna mapping, which reference signal are set for demodulating (cell-specific reference
Signal (CRS) or demodulated reference signal (DM-RS)) and channel condition information (CSI)
How to be obtained by terminal and feed back to network and different.In the case of transmission mode 1 to 6,
CRS is used for channel estimation, the also referred to as TM based on CRS.The volume based on code book of closed loop
Code is associated with transmission mode 4 (TM4).It is assumed that net in the case of closed loop precoding
Network selects pre-encoder matrix based on the feedback from UE.In current 3GPP standard
Define UE and select transmission rank (rank) and pre-encoder matrix based on to the measurement of CRS,
Then its information reported in the form of pre-encoder matrix instruction (PMI) and order instruction (RI)
Accuse to eNB.
However, in descending MUST, the signal of the superposition of the UE of pairing will be using respective point
The transmission power joined is launched, and this may affect to obtain the standard of CSI by measuring CRS
The really selection of property and suitable PMI and RI, because UE generally implicitly assumes that is in list
In user's multiple-input, multiple-output (SU-MIMO) rather than MUST.More importantly, except being chosen
For the signal of nearby UE (for example, UE1) is successfully decoded, selected PMI and RI also should
When being suitable for UE (for example, UE1) place decoding distant place UE (for example, UE2) on hand
Signal, for example, to remove the interference that caused by distant place UE.Additionally, eNB be also required to
The UE of nearby and faraway indicates selected PMI and RI.
Content of the invention
Embodiment of the disclosure aim to provide a kind of in the multi-user using closed loop precoding
The method and apparatus strengthening feedback in superposed transmission.
First aspect according to the disclosure, there is provided a kind of for many using closed loop precoding
The method strengthening feedback in user's superposed transmission, including：Receive the first letter from first user equipment
Channel state information；Receive second channel status information from the second user equipment of pairing；And base
In described first channel condition information and described second channel status information, select for described
First precoder information of one user equipment and for described second user equipment second
Precoder information.
In certain embodiments, described first channel condition information and described second channel state letter
Each of breath includes at least one of：Pre-coding matrix instruction, order instruction and channel
Quality indicates.
In certain embodiments, described first precoder information and described second precoder letter
Each of breath includes at least one of：Pre-coding matrix instruction and order instruction.
In certain embodiments, described first user equipment and described second user equipment are located at phase
Same cell, and wherein said first user equipment compared with described second user equipment closer to
The center of described cell.
In certain embodiments, methods described also includes：Send institute to described first user equipment
State the first precoder information and described second precoder information；And to described second user
Equipment sends described second precoder information.
In certain embodiments, methods described also includes：Send work(to described first user equipment
Rate distributes information, so that described first user equipment is based on described power allocation information feeding back
Described first channel condition information, described power allocation information is used for indicating that described first user sets
Power distribution between standby and described second user equipment.
In certain embodiments, include to described first user equipment transmit power distribution information：
Send multiple power allocation informations to described first user equipment, so that described first user sets
Standby feedback is corresponding to multiple first channel condition informations of the plurality of power allocation information.
In certain embodiments, based on described first channel condition information and described second channel shape
State information, selects for the first precoder information of described first user equipment and for institute
The second precoder information stating second user equipment includes：Select in described first user
Described first precoder information of the signal of described first user equipment is decoded at equipment；And
Select for decoding described the at described first user equipment and at described second user equipment
Described second precoder information of the signal of two user equipmenies.
In certain embodiments, based on described first channel condition information and described second channel shape
State information is selecting for the first precoder information of described first user equipment and to be used for
Second precoder information of described second user equipment also includes：Determine described first channel shape
Whether state information and described second channel status information mate；And based on a determination that described first letter
Channel state information and described second channel status information mismatch, in the following operation of execution at least
One operation：Described first user equipment is transmitted for single user；And make institute
State first user equipment and the pairing of the 3rd user equipment, for multi-user's superposed transmission.
Second aspect according to the disclosure, there is provided a kind of for many using closed loop precoding
The method strengthening feedback in user's superposed transmission, including：Send the first channel status letter to base station
Breath；Receive for the first precoder information of first user equipment from described base station and be used for
Second precoder information of the second user equipment of pairing；And it is based on described first precoding
Device information and described second precoder information decoding the signal receiving from described base station, its
Described in first user equipment and described second user equipment be located at same cells, and wherein institute
State first user equipment center closer to described cell compared with described second user equipment.
In certain embodiments, methods described also includes：Distribute letter from described base station receiving power
Breath, described power allocation information is used for indicating that described first user equipment and described second user set
Power distribution between standby.
In certain embodiments, methods described also includes：By based on described power allocation information
Cell special reference measurement obtaining described first channel condition information.
In certain embodiments, include from described base station receiving power distribution information：From described base
Stand and receive multiple power allocation informations.
In certain embodiments, send the first channel condition information to base station to include：Send out to base station
Send multiple first channel condition informations corresponding to the plurality of power allocation information, wherein each
First channel condition information is respectively by the cell-specific reference based on each power allocation information
The measurement of signal is obtaining.
In certain embodiments, based on described first precoder information and described second precoding
Device information includes decoding the signal receiving from described base station：Based on described second precoder
Information is decoding the signal of described second user equipment；Described second user equipment based on decoding
Signal, remove the interference that caused by described second user equipment；And it is pre- based on described first
Encoder information, decoding removes the signal after described interference.
The third aspect according to the disclosure, there is provided a kind of for many using closed loop precoding
The method strengthening feedback in user's superposed transmission, including：Send second channel state letter to base station
Breath；Receive the second precoder information for second user equipment from described base station；And base
To decode the signal receiving from described base station in described second precoder information.
In certain embodiments, described second channel status information include at least one of：
Pre-coding matrix instruction, order instruction and channel quality instruction.
In certain embodiments, described second precoder information include at least one of：
Pre-coding matrix instruction and order instruction.
Fourth aspect according to the disclosure, there is provided a kind of for many using closed loop precoding
Strengthen the equipment of feedback in user's superposed transmission, including：First receiving device, be configured to from
First user equipment receives the first channel condition information；Second reception device, is configured to from joining
To second user equipment receive second channel status information；And selecting device, it is configured to
Based on described first channel condition information and described second channel status information, select for described
First precoder information of first user equipment and for described second user equipment the
Two precoder information.
In certain embodiments, described first channel condition information and described second channel state letter
Each of breath includes at least one of：Pre-coding matrix instruction, order instruction and channel
Quality indicates.
In certain embodiments, described first precoder information and described second precoder letter
Each of breath includes at least one of：Pre-coding matrix instruction and order instruction.
In certain embodiments, described first user equipment and described second user equipment are located at phase
Same cell, and wherein said first user equipment compared with described second user equipment closer to
The center of described cell.
In certain embodiments, described equipment also includes：First dispensing device, be configured to
Described first user equipment sends described first precoder information and described second precoder
Information；And second dispensing device, it is configured to send described the to described second user equipment
Two precoder information.
In certain embodiments, described equipment also includes：3rd dispensing device, be configured to
Described first user equipment transmit power distributes information, so that described first user equipment is based on
Described power allocation information is feeding back described first channel condition information, described power allocation information
For indicating the power distribution between described first user equipment and described second user equipment.
In certain embodiments, described 3rd dispensing device is configured to set to described first user
Preparation send multiple power allocation informations, so that described first user equipment feeds back corresponding to described
Multiple first channel condition informations of multiple power allocation informations.
In certain embodiments, described selecting device is configured to：Select for described first
Described first precoder information of the signal of described first user equipment is decoded at user equipment；
And select for decoding institute at described first user equipment and at described second user equipment
State described second precoder information of the signal of second user equipment.
In certain embodiments, described selecting device is additionally configured to：Determine described first channel
Whether status information and described second channel status information mate；And based on a determination that described first
Channel condition information and described second channel status information mismatch, in the following operation of execution extremely
A few operation：Described first user equipment is transmitted for single user；And make described
First user equipment and the pairing of the 3rd user equipment, for multi-user's superposed transmission.
The 5th aspect according to the disclosure, there is provided a kind of for many using closed loop precoding
Strengthen the equipment of feedback in user's superposed transmission, including：4th dispensing device, be configured to
Base station sends the first channel condition information；3rd reception device, is configured to connect from described base station
Receive the first precoder information for first user equipment and the second user for pairing
Second precoder information of equipment；And first decoding apparatus, it is configured to based on described
One precoder information and described second precoder information receive from described base station to decode
Signal, wherein said first user equipment and described second user equipment is located at same cells,
And wherein said first user equipment is compared with described second user equipment closer to described little
The center in area.
In certain embodiments, described equipment also includes：4th reception device, be configured to from
Described base station receiving power distribution information, described power allocation information is used for indicating described first use
Power distribution between family equipment and described second user equipment.
In certain embodiments, described equipment also includes：Acquisition device, is configured to base
Measurement in the cell special reference of described power allocation information to obtain described first letter
Channel state information.
In certain embodiments, described 4th reception device be configured to from described base station receive many
Individual power allocation information.
In certain embodiments, described 4th dispensing device be configured to base station send corresponding to
Multiple first channel condition informations of the plurality of power allocation information, wherein each first channel
Status information is respectively by the survey of the cell special reference based on each power allocation information
Measure and to obtain.
In certain embodiments, described first decoding apparatus are configured to：Pre- based on described second
Encoder information is decoding the signal of described second user equipment；Described second use based on decoding
The signal of family equipment, removes the interference being caused by described second user equipment；And based on described
First precoder information, decoding removes the signal after described interference.
The 6th aspect according to the disclosure, there is provided a kind of for many using closed loop precoding
Strengthen the equipment of feedback in user's superposed transmission, including：5th dispensing device, be configured to
Base station sends second channel status information；5th reception device, is configured to connect from described base station
Receive the second precoder information for second user equipment；And second decoding apparatus, joined
It is set to and the signal receiving from described base station is decoded based on described second precoder information.
In accordance with an embodiment of the present disclosure for using closed loop precoding multi-user superposition pass
The defeated middle method and apparatus strengthening feedback is so that base station can be from the user equipment to report of pairing
Select suitable precoder information in channel condition information and be handed down to the user of pairing and set
Standby, wherein nearby/aggrieved UE can be decoded based on precoder information by distant place/interference UE
The interference signal causing, and carried by the interference signal that distant place/interference UE causes by removing
The high accuracy decoding the PDSCH data of its own.
Brief description
Accompanying drawing described herein is used for providing further understanding of the disclosure, constitutes the disclosure
A part, the schematic description and description of the disclosure is used for explaining the disclosure, does not constitute
Improper restriction of this disclosure.In the accompanying drawings:
Fig. 1 illustrates the schematic diagram of the environment 100 that wherein can implement embodiment of the disclosure；
Fig. 2 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
The flow chart strengthening the method 200 of feedback in the superposed transmission of family；
Fig. 3 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
The flow chart strengthening the method 300 of feedback in the superposed transmission of family；
Fig. 4 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
The flow chart strengthening the method 400 of feedback in the superposed transmission of family；
Fig. 5 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
Strengthen the block diagram of the equipment 500 of feedback in the superposed transmission of family；
Fig. 6 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
Strengthen the block diagram of the equipment 600 of feedback in the superposed transmission of family；And
Fig. 7 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
Strengthen the block diagram of the equipment 700 of feedback in the superposed transmission of family.
In various figures, identical or corresponding label represents identical or corresponding part.
Specific embodiment
Hereinafter, each exemplary embodiment of the disclosure will be described in detail with reference to the attached drawings.Should
Work as attention, these accompanying drawings and description be related to be merely possible to exemplary embodiment.Should refer to
Go out, according to subsequent description it is easy to dream up the replacement of structures and methods disclosed herein
Embodiment, and can be using these in the case of the principle claiming without departing from the disclosure
Alternate embodiment.
It should be appreciated that provide these exemplary embodiments to be used for the purpose of making those skilled in the art
Better understood when and then realize the disclosure, and not limit the model of the disclosure by any way
Enclose.
Term " inclusion " as used herein, "comprising" and similar terms are understood to open
Property term, i.e. " include/including but not limited to ".Term "based" is " being based at least partially on ".
Term " embodiment " expression " at least one embodiment "；Expression is " extremely for term " another embodiment "
A few further embodiment ".The related definition of other terms is given in will be described below.
Hereinafter, being used in accordance with an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings
Using the technical scheme strengthening feedback in multi-user's superposed transmission of closed loop precoding.
Fig. 2 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
The flow chart strengthening the method 200 of feedback in the superposed transmission of family.As shown in Fig. 2 method 200
Including step S201 to S203.Method 200 will be described in detail in conjunction with Fig. 1 and Fig. 2 now
Each step.In accordance with an embodiment of the present disclosure, method 200 for example can be by the eNB in Fig. 1
To execute.As shown in figure 1, UE1 and UE2 is through pairing for multi-user's superposed transmission
UE.UE1 and UE2 is located at same cells, and wherein UE1 is located at cell relative to center
Position, and UE2 then be located at cell edge.
At step S201, receive the first channel condition information from UE1.First channel status
Information (CSI) can include channel quality instruction (CQI), pre-coding matrix instruction (PMI)
And/or order instruction (RI).First CSI can be by UE1 by measuring the CRS that eNB issues
To obtain.
In accordance with an embodiment of the present disclosure, before step S201, eNB can send to UE1
Power allocation information, so that UE1 carries out CRS measurement using this power allocation information obtain
Obtain CSI.The CSI of feedback is used for the most suitable for the receptor of UE1 to eNB suggestion
CQI, RMI and RI.Power allocation information for example can indicate UE1 and UE2 of pairing
Between power distribution.ENB can also issue multiple power allocation informations to UE1, so that
Obtain multiple CSI corresponding to multiple power allocation informations for the UE1 feedback.For example, to UE1
The multiple power allocation informations issuing can indicate during MUST between UE2 and UE1
Power sharing ratio is respectively 90% and 10%, 80% and 20% or 70% and 30%.UE1
Accordingly CQI, RMI and RI can be covered to eNB feedback.
Similarly, in step S202, receive the 2nd CSI from the UE2 of pairing.2nd CSI
CQI, PMI and/or RI can also be included.2nd CSI can be passed through to measure eNB by UE2
The CRS issuing is obtaining.
Next, method 200 is carried out to step S203, based on a CSI and the 2nd CSI,
Select the first precoder information for UE1 and the second precoder letter for UE2
Breath.By step S201 and S202, eNB have received many sets CQI from UE1 and UE2,
PMI and/or RI, eNB can therefrom select the first precoding of the signal for decoding UE1
Device information and the second precoder information for decoding the signal of UE2.
In accordance with an embodiment of the present disclosure, selected first precoder information can be used for
Decode the signal of UE1 itself at UE1, and selected second precoder information is except can
Can be also used for decoding at UE1 for beyond the signal of decoding UE2 itself at UE2
The signal of UE2.This is because, as described above, UE1 and UE2 be paired for multiplex
The user equipment of family superposed transmission, UE2 is located at cell edge and obvious height may be assigned
In the transmission power of UE1, UE1 is caused with severe jamming, so UE1 needs to decode first
The signal of UE2, then improves solution by removing the signal of UE2 from the signal receiving
The accuracy of its own signal of code.
In accordance with an embodiment of the present disclosure, when the CSI feeding back to eNB and the 2nd CSI phase
Meanwhile, can PMI and RI according to included in identical CSI determining the first precoding
Device information and the second precoder information.As the CSI feeding back to eNB and the 2nd CSI
When different, for example, it is possible to include in the CSI (that is, the 2nd CSI) being fed back by UE2
PMI and RI enables to UE1 and decodes the signal of UE2 and have sufficiently high signal to noise ratio
In the case of, as the signal for decoding UE2 at UE1 and UE2 second prelists
Code device information.Additionally, for example, selected first precoder information and the second precoder
Information can have identical PMI, and same or different RI etc..
In accordance with an embodiment of the present disclosure, step S203 can also include determining a CSI and
Whether two CSI mate, that is, determine whether to select except being suitable for decoding at UE2
It is suitable also for beyond the signal of UE2 itself decoding the precoding of the signal of UE2 at UE1
Device information.When determining that a CSI and the 2nd CSI mismatches, that is, determine to select and remove
It is suitable also at UE1 beyond the signal being suitable for decoding UE2 itself at UE2
During the precoder information of signal of decoding UE2, UE1 can be selected to be used for alone by eNB
Family is transmitted；Or the UE (for example, UE3) of UE1 and another distant place can also be joined by eNB
To for multi-user's superposed transmission.So, eNB can according to the CSI being fed back by UE come
Single user transmission (i.e. SU-MIMO), multi-user transmission or nearby UE and different distant places
Carry out switching at runtime, i.e. each physical resource (PRB) between different pairings between UE
Using can have multiple combination mode, for example, it is possible to for MUST, SU-MIMO,
UE1 and UE2 pairing, UE1 and UE3 pairing, the MUST of layer 1 or layer 1 and layer
2 MUST etc..
In accordance with an embodiment of the present disclosure, method 200 also includes sending the first precoding to UE1
Device information and the second precoder information, so that UE1 can be using the second precoder letter
Breath decoding UE2 signal, then by from the signal receiving remove UE2 signal Lai
Decode the signal of its own using the first precoder information.Additionally, method 200 also include to
UE2 send the second precoder information so that UE2 utilize the second precoder information Lai
Decode the signal of its own.
So far, method 200 terminates.
Fig. 3 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
The flow chart strengthening the method 300 of feedback in the superposed transmission of family.As shown in figure 3, method 300
Including step S301 to S303.Method 300 will be described in detail in conjunction with Fig. 1 and Fig. 3 now
Step.In accordance with an embodiment of the present disclosure, method 300 for example can be by the UE1 in Fig. 1
To execute.
In step S301, send a CSI to eNB.First CSI can include CQI,
PMI and/or RI.First CSI can be obtained by measuring the CRS that eNB issues by UE1
?.
In accordance with an embodiment of the present disclosure, before step S301, UE1 can receive from eNB
It is specific to the power allocation information of UE1.UE1 can carry out CRS using this power allocation information
Measure and to obtain CSI and to feed back to eNB.Feedback CSI (that is, CSI) be used for
ENB suggestion optimal CQI, RMI and RI for the receptor of UE1.Power divides
Join information and for example can indicate the power distribution between UE1 and UE2 of pairing.Can be from eNB
Receive multiple power allocation informations, thus feedback is corresponding to multiple the of multiple power allocation informations
One CSI.For example, the multiple power allocation informations receiving from eNB can indicate in MUST
Power sharing ratio between period UE2 and UE1 is respectively 90% and 10%, 80% and 20%
Or 70% and 30%.UE1 accordingly can cover CQI, RMI and RI to eNB feedback.
In accordance with an embodiment of the present disclosure, it is superimposed biography to allow eNB to determine for descending multi-user
Defeated channel condition information, the UE of pairing can report corresponding to different hypothesis (examples to eNB
As limited with regard to different power distribution scenes and potential code book etc.) many sets CQI,
PMI and/or RI at eNB for MUST pre-encoder matrix selection.
For example, UE1 can be surveyed to eNB feedback based on the CRS being assumed using different power distributions
Many sets CQI, PMI and/or RI of amount.UE1 can also be configured with extra a set of power
Distribution instruction, for example, it may require that UE1 obtains and reports for all possible power
The CSI that distribution is assumed.Note, " all possible power distribution hypothesis " refers to for UE1
For there are all scenes of available power distribution instruction, that is, under these scenes, UE1 is still
The acceptable performance with sufficiently high signal to noise ratio (SNR) so can be obtained.
Additionally, in accordance with an embodiment of the present disclosure, between UE1 can be configured to the specific time
Every or the mode of clocked flip to report CSI to eNB, for example, by its configuration parameter
Codebooksubsetrestriction (instruction limit use precoding codebook subset) come reality
Existing.
Next, method 300 is carried out to step S302, receive for UE1 from eNB
One precoder information and second precoder information of the UE2 for pairing.As above institute
State, after the UE from pairing have received many set CQI, PMI and/or RI, eNB can for eNB
Therefrom to select the first precoder information of the signal for decoding UE1 and to be used for decoding
Second precoder information of the signal of UE2, selected first precoder information can be used
In the signal decoding UE1 itself at UE1, and selected second precoder information is removed
Can be also used at UE1 beyond the signal that can be used for decoding UE2 itself at UE2
The signal of decoding UE2.ENB can issue selected first precoder information to UE1
With the second precoder information.Therefore, at step S302, UE1 can receive from eNB
The first precoder information and the second precoder information.
Next, method is carried out to step S303, pre- based on the first precoder information and second
Encoder information is decoding the signal receiving from eNB.As described above, passing through step S301
With step S302, UE1 have received the of the signal for decoding UE1 being selected by eNB
One precoder information and the second precoder information for decoding the signal of UE2, the
One precoder information can be used for decoding the signal of UE1 itself at UE1 and second prelists
Code device information can also be used in addition to can be used for decoding the signal of UE2 itself at UE2
In the signal decoding UE2 at UE1.Therefore UE1 can be based on the second precoder information
To decode the signal of UE2；It is then based on the signal of the UE2 of decoding, remove by second user
The interference that equipment causes；And it is based on the first precoder information, decoding removes its after disturbing
The signal of itself.
So far, method 300 terminates.
Fig. 4 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
The flow chart strengthening the method 400 of feedback in the superposed transmission of family.As shown in figure 4, method 400
Including step S401 and S402.Method 400 will be described in detail in conjunction with Fig. 1 and Fig. 4 now
Step.In accordance with an embodiment of the present disclosure, method 400 for example can be by the UE2 in Fig. 1
To execute.
At step S401, UE2 sends the 2nd CSI to eNB.2nd CSI can also wrap
Include CQI, PMI and/or RI.2nd CSI can be by UE2 by measuring what eNB issued
CRS is obtaining.As described above, eNB receives many set CQI, PMI in the UE from pairing
And/or after RI, can therefrom select the first precoder information of the signal for decoding UE1
And for decoding the second precoder information of the signal of UE2, and by the second precoding
Device information is handed down to UE2.Therefore, at step S402, UE2 can receive from eNB
The second precoder information, and based on the second precoding receiving at step S403
Device information is decoding the PDSCH signal that it receives.So far, method 400 terminates.
Fig. 5 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
Strengthen the block diagram of the equipment 500 of feedback in the superposed transmission of family.As shown in figure 5, equipment 500 wraps
Include first receiving device 501, be configured to receive the first channel status letter from first user equipment
Breath；Second reception device 502, is configured to receive the second letter from the second user equipment of pairing
Channel state information；And selecting device 503, be configured to based on the first channel condition information and
Second channel status information, select for first user equipment the first precoder information and
The second precoder information for second user equipment.
In accordance with an embodiment of the present disclosure, in the first channel condition information and second channel status information
Each include at least one of：Pre-coding matrix instruction, order instruction and channel quality
Instruction.
In accordance with an embodiment of the present disclosure, in the first precoder information and the second precoder information
Each include at least one of：Pre-coding matrix instruction and order instruction.
In accordance with an embodiment of the present disclosure, first user equipment and second user equipment be located at identical little
Area, and wherein first user equipment compared with second user equipment closer to the center of this cell.
In accordance with an embodiment of the present disclosure, equipment 500 also includes：First dispensing device, is configured
It is to send the first precoder information and the second precoder information to first user equipment；And
Second dispensing device, is configured to send the second precoder information to second user equipment.
In accordance with an embodiment of the present disclosure, equipment 500 also includes：3rd dispensing device, is configured
It is to distribute information to first user equipment transmit power, so that first user equipment is based on power
Feeding back the first channel condition information, this power allocation information is used for instruction first use to distribution information
Power distribution between family equipment and second user equipment.
In accordance with an embodiment of the present disclosure, the 3rd dispensing device is configured to send out to first user equipment
Send multiple power allocation informations, so that first user equipment feeds back corresponding to multiple power distributions
Multiple first channel condition informations of information.
In accordance with an embodiment of the present disclosure, selecting device 503 is configured to：Select for first
The first precoder information of the signal of first user equipment is decoded at user equipment；And select
For decoding the signal of second user equipment at first user equipment and at second user equipment
The second precoder information.
In accordance with an embodiment of the present disclosure, selecting device 503 is additionally configured to：Determine the first channel
Whether status information and second channel status information mate；And based on a determination that the first channel status
Information and second channel status information mismatch, at least one of following operation of execution operation：
First user equipment is transmitted for single user；And make first user equipment and the 3rd use
Family device pairing, for multi-user's superposed transmission.
Fig. 6 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
Strengthen the block diagram of the equipment 600 of feedback in the superposed transmission of family.As shown in fig. 6, equipment 600 wraps
Include the 4th dispensing device, be configured to send the first channel condition information to base station；3rd reception
Device, be configured to from base station receive the first precoder information for first user equipment with
And the second precoder information of the second user equipment for pairing；And first decoding apparatus,
It is configured to decode from base station based on the first precoder information and the second precoder information
The signal receiving, wherein first user equipment and second user equipment are located at same cells, and
And wherein first user equipment compared with second user equipment closer to the center of this cell.
In accordance with an embodiment of the present disclosure, equipment 600 also includes：4th reception device, is configured
Be to distribute information from base station receiving power, power allocation information be used for indicating first user equipment and
Power distribution between second user equipment.
In accordance with an embodiment of the present disclosure, equipment 600 also includes：Acquisition device, is configured to lead to
Cross the measurement of the cell special reference based on power allocation information and obtain the first channel shape
State information.
In accordance with an embodiment of the present disclosure, the 4th reception device is configured to receive multiple work(from base station
Rate distributes information.
In accordance with an embodiment of the present disclosure, the 4th dispensing device be configured to base station send corresponding to
Multiple first channel condition informations of multiple power allocation informations, wherein each first channel status
Information respectively by the measurement of the cell special reference based on each power allocation information Lai
Obtain.
In accordance with an embodiment of the present disclosure, the first decoding apparatus are configured to：Based on the second precoding
Device information is decoding the signal of second user equipment；The signal of the second user equipment based on decoding,
Remove the interference being caused by second user equipment；And it is based on the first precoder information, decoding
Remove the signal after interference.
Fig. 7 illustrate in accordance with an embodiment of the present disclosure for multiplex using closed loop precoding
Strengthen the block diagram of the equipment 700 of feedback in the superposed transmission of family.As shown in fig. 7, equipment 700 wraps
Include the 5th dispensing device 701, be configured to send second channel status information to base station；5th
Reception device 702, is configured to receive the second precoding for second user equipment from base station
Device information；And second decoding apparatus 703, be configured to based on the second precoder information Lai
Decode the signal receiving from base station.
In sum, in accordance with an embodiment of the present disclosure, there is provided one kind is for pre- using closed loop
Strengthen the method and apparatus of feedback so that base station can be from joining in multi-user's superposed transmission of coding
To user equipment to report channel condition information in select suitable precoder information and
Be handed down to the user equipment of pairing, wherein nearby/aggrieved UE can based on precoder information Lai
Decoding by a distance/interference signal that causes of interference UE, and by removing by a distance/interference UE
The interference signal causing decodes the accuracy of the PDSCH data of its own to improve.
In general, the various example embodiment of the disclosure can be in hardware or special circuit, soft
Implement in part, logic, or its any combinations.Some aspects can be implemented within hardware, and its
His aspect can by the firmware of controller, microprocessor or other computing devices or
Implement in software.When each side of embodiment of the disclosure are illustrated or described as block diagram, flow process
Figure or when being represented using other figures some, it will be understood that square frame described herein, device, system,
Techniques or methods can be as nonrestrictive example in hardware, software, firmware, special circuit
Or implement in logic, common hardware or controller or other computing devices, or its some combination.
And, each frame in flow chart can be counted as method and step, and/or computer program
The operation that the operation of code generates, and/or be interpreted as executing the logic of multiple couplings of correlation function
Component.For example, embodiment of the disclosure includes computer program, this computer journey
Sequence product includes visibly realizing computer program on a machine-readable medium, this computer journey
Sequence comprises the program code being configured to realize method described above.
In disclosed context, machine readable media can be comprise or store for or relevant
Any tangible medium in the program of instruction execution system, device or equipment.Machine readable media
Can be machine-readable signal medium or machinable medium.Machine readable media can wrap
Include but be not limited to electronics, magnetic, optical, electromagnetism, infrared or semiconductor system,
Device or equipment, or its any appropriate combination.The more detailed example of machinable medium
Including the electrical connection with one or more wire, portable computer diskette, hard disk, with
Machine access memory access (RAM), read only memory (ROM), erasable programmable is read-only deposits
Reservoir (EPROM or flash memory), light storage device, magnetic storage apparatus, or it is any appropriate
Combination.
Computer program code for realizing disclosed method can be compiled with one or more
Cheng Yuyan writes.These computer program codes can be supplied to general purpose computer, dedicated computing
The processor of machine or other programmable data processing meanss is so that program code is by computer
Or when the execution of other programmable data processing meanss, cause in flow chart and/or block diagram
Function/the operation of regulation is carried out.Program code can completely on computers, partly calculate
On machine, as independent software kit, part on computers and part on the remote computer or
Execute on remote computer or server completely.
Although in addition, operation is depicted with particular order, this simultaneously should not be construed and require this
Generic operation is completed with the particular order that illustrates or with sequential order, or executes the behaviour of all diagrams
Make to obtain expected result.In some cases, multitask or parallel processing can be beneficial.
Similarly, although discussed above contain some specific implementation details, this should not explain
For limiting the scope of any invention or claim, and should be interpreted that to specific invention can be directed to
Specific embodiment description.In this specification described in the context of separate embodiment
Some features can also combined implementation in single embodiment.On the contrary, in single embodiment
Various features described in context can also be discretely in multiple embodiments or any appropriate
Sub-portfolio in implement.
For the various modifications of the example embodiment of the aforementioned disclosure, change and will look into together with accompanying drawing
When seeing described above, obvious are become to those skilled in the technology concerned.Any and all modification
Unrestriced and the disclosure example embodiment scope will be still fallen within.Additionally, aforementioned specification and
There is the benefit inspiring in accompanying drawing, be related to the technology people of the technical field of these embodiments of the disclosure
Member will be appreciated that the other embodiment of the disclosure herein illustrating.
It will be understood that, embodiment of the disclosure is not limited to disclosed specific embodiment, and changes
All should be contained in scope of the appended claims with other embodiment.Although being used here spy
Fixed term, but they only use in the sense that general and description, and are not limited to
Purpose.
Claims (32)
1. a kind of in the multi-user's superposed transmission using closed loop precoding strengthen feedback
Method, including：
Receive the first channel condition information from first user equipment；
Receive second channel status information from the second user equipment of pairing；And
Based on described first channel condition information and described second channel status information, select to be used for
First precoder information of described first user equipment and be used for described second user equipment
The second precoder information.
2. method according to claim 1, wherein said first channel condition information and institute
State the inclusion of each of second channel status information at least one of：Pre-coding matrix refers to
Show, order instruction and channel quality indicate.
3. method according to claim 1, wherein said first precoder information and institute
State the inclusion of each of second precoder information at least one of：Pre-coding matrix refers to
Show and order instruction.
4. method according to claim 1, wherein said first user equipment and described
Two user equipmenies are located at same cells, and wherein said first user equipment and described second use
Family equipment compares the center closer to described cell.
5. method according to claim 4, also includes：
Send described first precoder information and described second pre- to described first user equipment
Encoder information；And
Send described second precoder information to described second user equipment.
6. method according to claim 4, also includes：
Distribute information to described first user equipment transmit power, so that described first user sets
For feeding back described first channel condition information based on described power allocation information, described power divides
Join information for the power indicating between described first user equipment and described second user equipment
Distribution.
7. method according to claim 6, wherein sends work(to described first user equipment
Rate distribution information includes：
Send multiple power allocation informations to described first user equipment, so that described first use
Family equipment feedback is corresponding to multiple first channel condition informations of the plurality of power allocation information.
8. according to claim 4 method, wherein be based on described first channel condition information
With described second channel status information, select the first precoding for described first user equipment
Device information and the second precoder information for described second user equipment include：
Select the signal for decoding described first user equipment at described first user equipment
Described first precoder information；And
Select for decoding institute at described first user equipment and at described second user equipment
State described second precoder information of the signal of second user equipment.
9. according to claim 4 method, wherein be based on described first channel condition information
With described second channel status information, select the first precoding for described first user equipment
Device information and the second precoder information for described second user equipment also include：
Determine whether described first channel condition information and described second channel status information mate；
And
Based on a determination that described first channel condition information and described second channel status information are not
Join, at least one of following operation of execution operation：
Described first user equipment is transmitted for single user；And
Make described first user equipment and the pairing of the 3rd user equipment, for multi-user
Superposed transmission.
10. a kind of in the multi-user's superposed transmission using closed loop precoding strengthen feedback
Method, including：
Send the first channel condition information to base station；
Receive the first precoder information and the use for first user equipment from described base station
The second precoder information in the second user equipment of pairing；And
Based on described first precoder information and described second precoder information decode from
The signal that described base station receives,
Wherein said first user equipment and described second user equipment are located at same cells, and
Wherein said first user equipment is compared with described second user equipment closer to described cell
Center.
11. methods according to claim 10, also include：
Distribute information from described base station receiving power, described power allocation information is used for indicating described
Power distribution between first user equipment and described second user equipment.
12. methods according to claim 11, also include：
Obtained by the measurement of the cell special reference based on described power allocation information
Described first channel condition information.
13. methods according to claim 12, wherein distribute from described base station receiving power
Information includes：
Receive multiple power allocation informations from described base station.
14. methods according to claim 13, wherein send the first channel status to base station
Information includes：
Send multiple first channel status corresponding to the plurality of power allocation information to base station
Information, wherein each first channel condition information is respectively by based on each power allocation information
The measurement of cell special reference is obtaining.
15. methods according to claim 10, are wherein based on described first precoder letter
Breath to decode, with described second precoder information, the signal receiving from described base station and to include：
Decode the signal of described second user equipment based on described second precoder information；
The signal of the described second user equipment based on decoding, removes by described second user equipment
The interference causing；And
Based on described first precoder information, decoding removes the signal after described interference.
16. a kind of in the multi-user's superposed transmission using closed loop precoding strengthen feedback
Method, including：
Send second channel status information to base station；
Receive the second precoder information for second user equipment from described base station；And
The signal receiving from described base station is decoded based on described second precoder information.
17. a kind of in the multi-user's superposed transmission using closed loop precoding strengthen feedback
Equipment, including：
First receiving device, is configured to receive the first channel condition information from first user equipment；
Second reception device, is configured to receive second channel shape from the second user equipment of pairing
State information；And
Selecting device, is configured to based on described first channel condition information and described second channel
Status information, selects for the first precoder information of described first user equipment and is used for
Second precoder information of described second user equipment.
18. equipment according to claim 17, wherein said first channel condition information and
Each of described second channel status information includes at least one of：Pre-coding matrix
Instruction, order instruction and channel quality instruction.
19. equipment according to claim 17, wherein said first precoder information and
Each of described second precoder information includes at least one of：Pre-coding matrix
Instruction and order instruction.
20. equipment according to claim 17, wherein said first user equipment and described
Second user equipment is located at same cells, and wherein said first user equipment and described second
The center closer to described cell compared by user equipment.
21. equipment according to claim 20, also include：
First dispensing device, is configured to prelist to described first user equipment transmission described first
Code device information and described second precoder information；And
Second dispensing device, is configured to prelist to described second user equipment transmission described second
Code device information.
22. equipment according to claim 20, also include：
3rd dispensing device, is configured to distribute information to described first user equipment transmit power,
So that described first user equipment is based on described power allocation information feeds back described first letter
Channel state information, described power allocation information is used for indicating described first user equipment and described
Power distribution between two user equipmenies.
23. equipment according to claim 22, wherein said 3rd dispensing device is configured
For：
Send multiple power allocation informations to described first user equipment, so that described first use
Family equipment feedback is corresponding to multiple first channel condition informations of the plurality of power allocation information.
24. according to claim 20 equipment, wherein said selecting device is configured to：
Select the signal for decoding described first user equipment at described first user equipment
Described first precoder information；And
Select for decoding institute at described first user equipment and at described second user equipment
State described second precoder information of the signal of second user equipment.
25. according to claim 20 equipment, wherein said selecting device is additionally configured to：
Determine whether described first channel condition information and described second channel status information mate；
And
Based on a determination that described first channel condition information and described second channel status information are not
Join, at least one of following operation of execution operation：
Described first user equipment is transmitted for single user；And
Make described first user equipment and the pairing of the 3rd user equipment, for multi-user
Superposed transmission.
26. a kind of in the multi-user's superposed transmission using closed loop precoding strengthen feedback
Equipment, including：
4th dispensing device, is configured to send the first channel condition information to base station；
3rd reception device, is configured to receive for first user equipment from described base station
One precoder information and the second precoder information of the second user equipment for pairing；
And
First decoding apparatus, are configured to based on described first precoder information and described second
Precoder information decoding the signal receiving from described base station,
Wherein said first user equipment and described second user equipment are located at same cells, and
Wherein said first user equipment is compared with described second user equipment closer to described cell
Center.
27. equipment according to claim 26, also include：
4th reception device, is configured to distribute information, described work(from described base station receiving power
Rate distribution information is used for indicating between described first user equipment and described second user equipment
Power distribution.
28. equipment according to claim 27, also include：
Acquisition device, is configured to the cell-specific reference based on described power allocation information
The measurement of signal is obtaining described first channel condition information.
29. equipment according to claim 28, wherein said 4th reception device is configured
For：
Receive multiple power allocation informations from described base station.
30. equipment according to claim 29, wherein said 4th dispensing device is configured
For：
Send multiple first channel status corresponding to the plurality of power allocation information to base station
Information, wherein each first channel condition information is respectively by based on each power allocation information
The measurement of cell special reference is obtaining.
31. equipment according to claim 26, wherein said first decoding apparatus are configured
For：
Decode the signal of described second user equipment based on described second precoder information；
The signal of the described second user equipment based on decoding, removes by described second user equipment
The interference causing；And
Based on described first precoder information, decoding removes the signal after described interference.
32. a kind of in the multi-user's superposed transmission using closed loop precoding strengthen feedback
Equipment, including：
5th dispensing device, is configured to send second channel status information to base station；
5th reception device, is configured to receive for second user equipment from described base station
Two precoder information；And
Second decoding apparatus, are configured to decode from institute based on described second precoder information
State the signal that base station receives.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510478236.0A CN106452537B (en) | 2015-08-06 | 2015-08-06 | Method and apparatus for enhancing feedback in multi-user superposition transmission |
| PCT/IB2016/001125 WO2017021771A2 (en) | 2015-08-06 | 2016-07-08 | Method and apparatus of feedback enhancement for multiuser superposition transmission |
| TW105123597A TW201717562A (en) | 2015-08-06 | 2016-07-26 | Method and apparatus of feedback enhancement for multiuser superposition transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510478236.0A CN106452537B (en) | 2015-08-06 | 2015-08-06 | Method and apparatus for enhancing feedback in multi-user superposition transmission |
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| Publication Number | Publication Date |
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| CN106452537A true CN106452537A (en) | 2017-02-22 |
| CN106452537B CN106452537B (en) | 2019-12-17 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510478236.0A Active CN106452537B (en) | 2015-08-06 | 2015-08-06 | Method and apparatus for enhancing feedback in multi-user superposition transmission |
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| Country | Link |
|---|---|
| CN (1) | CN106452537B (en) |
| TW (1) | TW201717562A (en) |
| WO (1) | WO2017021771A2 (en) |
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| WO2018153045A1 (en) * | 2017-02-24 | 2018-08-30 | 深圳市中兴微电子技术有限公司 | Method, apparatus and system for feeding back channel state information, and storage medium |
| CN108512578A (en) * | 2017-02-24 | 2018-09-07 | 深圳市中兴微电子技术有限公司 | A kind of channel state information feedback method, device and system |
| WO2019028885A1 (en) * | 2017-08-11 | 2019-02-14 | 南通朗恒通信技术有限公司 | Method and device used in user equipment and base station of wireless communication |
| WO2019137382A1 (en) * | 2018-01-11 | 2019-07-18 | 中国移动通信有限公司研究院 | Channel information processing method, base station, terminal and computer storage medium |
Also Published As
| Publication number | Publication date |
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| TW201717562A (en) | 2017-05-16 |
| CN106452537B (en) | 2019-12-17 |
| WO2017021771A2 (en) | 2017-02-09 |
| WO2017021771A3 (en) | 2017-03-16 |
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