WO2017152750A1 - 一种反馈信息的传输方法和装置 - Google Patents
一种反馈信息的传输方法和装置 Download PDFInfo
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- WO2017152750A1 WO2017152750A1 PCT/CN2017/074282 CN2017074282W WO2017152750A1 WO 2017152750 A1 WO2017152750 A1 WO 2017152750A1 CN 2017074282 W CN2017074282 W CN 2017074282W WO 2017152750 A1 WO2017152750 A1 WO 2017152750A1
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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
- H04B7/0478—Special codebook structures directed to feedback optimisation
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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
- H04B7/0417—Feedback systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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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
- H04B7/0486—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking channel rank into account
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
Definitions
- the present disclosure relates to the field of communications technologies, and in particular, to a method and apparatus for transmitting feedback information.
- a closed-loop precoding technique is introduced in the Long Term Evolution (LTE) Release 8 (Rel-8) system to improve spectral efficiency.
- the closed-loop precoding technique requires that both the base station and the terminal pre-store a set of the same precoding matrix, and the set of precoding matrices is called a codebook.
- the terminal selects a precoding matrix from the codebook according to the setting criterion.
- the selected criteria can be maximizing mutual information, maximizing output signal to interference and noise ratio, and the like.
- the terminal feeds the index of the selected precoding matrix in the codebook to the base station through the uplink channel, and the index is recorded as a Precoding Matrix Indicator (PMI).
- the base station can determine the precoding matrix to be used for the terminal according to the received PMI.
- PMI Precoding Matrix Indicator
- LTE Rel-8 introduces an open-loop Multiple Input Multiple Output (MIMO) transmission scheme.
- MIMO Multiple Input Multiple Output
- the terminal no longer feeds back the PMI, and only needs to feed back Channel Quality Indicator (CQI) information and Rank Indication (RI) information.
- CQI Channel Quality Indicator
- RI Rank Indication
- the open-loop MIMO scheme cannot adjust the transmission parameters according to the channel adaptability, and cannot obtain the beamforming gain and precoding gain; while the closed-loop MIMO scheme is used when the terminal moves at high speed.
- the information fed back by the terminal is invalid, causing a mismatch between the transmission parameters and the actual channel conditions, resulting in deterioration of system performance.
- the embodiments of the present disclosure provide a method and an apparatus for transmitting feedback information, which are used to solve the problem that the open-loop MIMO scheme cannot adjust the transmission parameters according to the change of the channel in the related art, and the beamforming gain and the precoding gain cannot be obtained, and
- the closed-loop MIMO scheme causes the system performance to deteriorate due to the failure of the information fed back by the terminal when the terminal moves at a high speed, resulting in a mismatch between the transmission parameters and the actual channel conditions.
- an embodiment of the present disclosure provides a method for transmitting feedback information, where the method includes:
- the transmitting end determines the first codebook according to the result of the channel measurement, where the precoding matrix included in the first codebook is transformed according to the same structural matrix;
- the transmitting end calculates a first CQI according to part or all of the precoding matrix in the first codebook
- the transmitting end sends first indication information indicating the first codebook and second indication information indicating the first CQI to the receiving end.
- the sending end calculates the first CQI according to part or all of the precoding matrix in the first codebook, including:
- the transmitting end selects, from the first codebook, a precoding matrix for each resource unit RF as the first precoding matrix of the RF;
- the transmitting end calculates a first CQI corresponding to the first sub-band according to the first pre-coding matrix of the RF included in the first sub-band.
- the sending end determines the first codebook according to the result of the channel measurement, including:
- the transmitting end selects a second precoding matrix from a predefined second codebook according to the result of the channel measurement;
- the transmitting end uses the second precoding matrix as the structure matrix, and determines the first codebook according to the second precoding matrix;
- the first indication information is identifier information used to represent the second precoding matrix.
- the sending end determines the first codebook according to the second precoding matrix, and includes:
- the transmitting end performs column switching on the column vectors in the second precoding matrix, and determines a set formed by the matrix obtained by the column switching as the first codebook;
- the sending end determines the first codebook according to the result of the channel measurement, including:
- the transmitting end selects a precoding matrix set as the first codebook from a preset precoding matrix set according to a result of channel measurement;
- the first indication information is index information of the first codebook in a preset precoding matrix set.
- the sending end determines the first codebook according to the result of the channel measurement, including:
- the transmitting end selects a precoding matrix set from a preset precoding matrix set according to the result of the channel measurement
- the transmitting end selects a precoding matrix subset from the selected precoding matrix set according to the result of the channel measurement, and determines the selected precoding matrix subset as the first codebook;
- the first indication information includes index information of the selected precoding matrix set in a predefined precoding matrix set, and index information of the selected precoding matrix subset in the selected precoding matrix set. .
- the method further includes:
- the transmitting end selects a precoding matrix as the third precoding matrix from the first codebook according to the result of the channel measurement;
- the transmitting end calculates a second CQI according to the third precoding matrix
- the transmitting end sends identification information for identifying the third precoding matrix and information for indicating the second CQI to the receiving end.
- an embodiment of the present disclosure provides a method for receiving feedback information, the method comprising:
- the indication information of the first codebook is identification information for indicating a second precoding matrix
- the second precoding matrix is a result of the channel measurement by the sending end according to a channel measurement.
- the precoding matrix selected is identification information for indicating a second precoding matrix
- the indication information of the first codebook is index information of the first codebook in a preset precoding matrix set; or
- the indication information of the first codebook includes index information of a precoding matrix set selected by the transmitting end in a preset precoding matrix set, and a precoding matrix subset selected by the transmitting end is selected. Index information in the set of precoding matrices.
- an embodiment of the present disclosure provides a sending device for feedback information, where the device includes:
- a determining module configured to determine, according to a result of the channel measurement, a first codebook, where the precoding matrix included in the first codebook is transformed according to the same structural matrix
- a calculating module configured to calculate a first CQI according to part or all of the precoding matrix in the first codebook
- a sending module configured to send first indication information for indicating the first codebook and second indication information for indicating the first CQI to the receiving end.
- the calculation module is specifically configured to:
- the first codebook selecting a precoding matrix for each resource unit RF as the a first precoding matrix of the RF; for each first subband, the first CQI corresponding to the first subband is calculated according to the first precoding matrix corresponding to the RF included in the first subband.
- the determining module is specifically configured to:
- the determining module is specifically configured to:
- a set of matrix formations is determined as the first codebook.
- the determining module is specifically configured to:
- the first indication information is index information of the first codebook in a preset precoding matrix set.
- the determining module is specifically configured to:
- the first indication information includes index information of the selected precoding matrix set in a predefined precoding matrix set, and index information of the selected precoding matrix subset in the selected precoding matrix set. .
- the calculating module is further configured to: select, according to a result of the channel measurement, a precoding matrix as the third precoding matrix from the first codebook; a third precoding matrix, the second CQI is calculated;
- the sending module is further configured to: send identifier information for identifying the third precoding matrix and information for indicating the second CQI to the receiving end.
- an embodiment of the present disclosure provides a terminal, the terminal comprising: a transmitter, and at least one processor coupled to the transmitter, wherein:
- a processor for reading a program in the memory performing the following process:
- the processor specifically executes:
- one precoding matrix is selected for each resource unit RF as a first precoding matrix of the RF; for each first subband, according to the RF included in the first subband Corresponding the first precoding matrix, the first CQI corresponding to the first subband is calculated.
- the processor specifically executes:
- the processor specifically executes:
- a set of matrix formations is determined as the first codebook.
- the processor specifically executes:
- the first indication information is index information of the first codebook in a preset precoding matrix set.
- the processor specifically executes:
- the first indication information includes index information of the selected precoding matrix set in a predefined precoding matrix set, and index information of the selected precoding matrix subset in the selected precoding matrix set. .
- the processor further performs: selecting, according to a result of the channel measurement, a precoding matrix as a third precoding matrix from the first codebook; and calculating according to the third precoding matrix Obtaining a second CQI; identifying, by the transmitter, identification information of the third precoding matrix and information for indicating the second CQI, and sending the information to the receiving end.
- an embodiment of the present disclosure provides a receiving device for feedback information, where the device includes:
- a receiving module configured to receive, by the sending end, indication information for indicating the first codebook and indication information for indicating the first CQI;
- a determining module configured to determine, according to the indication information used to represent the first codebook, the first codebook, where the precoding matrix included in the first codebook is transformed according to the same structural matrix, and Determining, according to the indication information for indicating the first CQI, the first CQI, where the first CQI information is calculated by the sending end based on a part or all of the precoding matrix in the first codebook.
- an embodiment of the present disclosure provides a base station including: a receiver, and at least one processor coupled to the receiver, wherein:
- a processor for reading a program in the memory performing the following process:
- an embodiment of the present disclosure provides a transmitting device for feedback information, including: a transmitter, and at least one processor connected to the transmitter, wherein the processor is configured to read a program in the memory, and execute the following a process: determining, according to a result of the channel measurement, a first codebook, where the precoding matrix included in the first codebook is transformed according to a same structural matrix; according to part or all of the first codebook Encoding matrix, calculating a first CQI; transmitting first indication information for indicating the first codebook and second indication information for indicating the first CQI to a receiving end by using a transmitter.
- an embodiment of the present disclosure provides a receiving device for feedback information, including: a receiver, and at least one processor connected to the receiver, wherein the processor is configured to read a program in the memory, and execute the following a process: receiving, by the receiver, indication information for indicating the first codebook and indication information for indicating the first CQI, and determining, according to the indication information for indicating the first codebook, a first codebook, where the precoding matrix included in the first codebook is transformed according to the same structural matrix, and determining, according to the indication information for indicating the first CQI, the first CQI, the first CQI information
- the transmitting end is calculated based on a part or all of the precoding matrix in the first codebook.
- the transmitting end determines the first codebook according to the result of the channel measurement, so that the determined first codebook is related to the channel, that is, the closed-loop precoding technology is adopted, so that the receiving end is During data transmission, the transmission parameters can be adaptively adjusted according to the change of the channel, thereby obtaining beamforming gain and precoding gain; the transmitting end calculates the first CQI according to part or all of the precoding matrix in the first codebook, And feedback to the receiving end, that is, the open-loop pre-coding technology is adopted, so that when the data transmission is performed in the high-speed moving scene of the terminal, the obtained channel state information is not matched with the actual channel condition, and the system performance is degraded.
- the System performance Since the closed-loop pre-coding technology and the open-loop pre-coding technology are simultaneously combined in the embodiment of the present disclosure, the System performance.
- the precoding matrix included in the first codebook used in the embodiment of the present disclosure is transformed according to the same structural matrix, the direction of the beam formed by each precoding matrix in the first codebook is It is roughly the same, so that the beamforming gain can be further obtained and the system performance can be improved.
- FIG. 1 is a schematic diagram of a method for transmitting feedback information provided in some embodiments of the present disclosure
- FIG. 2 is a schematic diagram of a method for receiving feedback information provided in some embodiments of the present disclosure
- FIG. 3 is a schematic diagram of a device for transmitting feedback information provided in some embodiments of the present disclosure.
- FIG. 4 is a schematic diagram of a terminal provided in some embodiments of the present disclosure.
- FIG. 5 is a schematic diagram of a receiving device for providing feedback information according to some embodiments of the present disclosure
- FIG. 6 is a schematic diagram of a base station provided in some embodiments of the present disclosure.
- a method for transmitting feedback information is provided, as shown in FIG. 1 .
- the method includes:
- the transmitting end determines, according to a result of the channel measurement, a first codebook, where the precoding matrix included in the first codebook is transformed according to the same structural matrix;
- the sending end calculates a first CQI according to part or all of the precoding matrix in the first codebook
- the sending end sends first indication information indicating the first codebook and second indication information indicating the first CQI to the receiving end.
- the sending order of the first indication information and the second indication information is not limited.
- the first indication information and the second indication information may be sent simultaneously after step S12; or the first codebook may be determined in step S11. Then, the first indication information is sent first, and after the first CQI is calculated in step S12, the second indication information is sent.
- the transmitting end determines the first codebook according to the result of the channel measurement, so that the determined first codebook is related to the channel, that is, the closed-loop precoding technology is adopted, so that the receiving end can transmit data during the data transmission.
- the transmission parameter is adaptively adjusted according to the change of the channel, so that the beamforming gain and the precoding gain are obtained; the transmitting end calculates the first CQI according to part or all of the precoding matrix in the first codebook, and feeds back to the receiving end. That is, the open-loop pre-coding technology is adopted, so that when the data transmission is performed in the scenario where the terminal moves at a high speed, the obtained channel state information does not match the actual channel condition, and the system performance is degraded.
- the system performance is improved.
- the precoding matrix included in the first codebook used in the embodiment of the present disclosure is transformed according to the same structural matrix, the direction of the beam formed by each precoding matrix in the first codebook is It is roughly the same, so that the beamforming gain can be further obtained and the system performance can be improved.
- the sending end determines the first codebook according to the result of the channel measurement, and includes the following two possible implementation manners:
- the first method is specifically: the sending end selects a second precoding matrix from a predefined second codebook according to a result of channel measurement; and the sending end uses the second precoding matrix as the structure a matrix, and determining the first codebook according to the second precoding matrix.
- the second codebook is pre-agreed, and the sending end and the receiving end respectively save, or the second codebook is determined by the sending end, and the second codebook is notified to the receiving end by signaling, or is determined by the receiving end.
- the second codebook notifies the second codebook to the transmitting end by signaling.
- the indication information of the first codebook is identification information used to represent the second precoding matrix.
- the transmitting end first determines the dimension of the second precoding matrix according to the Rank Indicator (RI) obtained by the channel measurement, and then selects the dimension and the determined precoding matrix according to the determined dimension. And outputting a second codebook having the same dimension; and finally selecting a precoding matrix as the second precoding matrix from the selected second codebook.
- RI Rank Indicator
- the transmitting end when the transmitting end determines the dimension of the second precoding matrix according to the RI obtained by the channel measurement, if the second precoding matrix is a column vector, the transmitting end may be mapped according to the length of the RI and the second precoding matrix. , determining the length of the second precoding matrix.
- the second precoding matrix is a vector
- a possible implementation form of the mapping relationship between the length of the RI and the second precoding matrix is as shown in Table 1:
- the transmitting end determines the number of antenna ports of the second precoding matrix as the CSI-RS; and determines the mapping relationship between the RI and the number of columns of the second precoding matrix. The number of columns of the second precoding matrix.
- the second precoding matrix is a diagonal matrix, such as
- a possible implementation form of the mapping relationship between the RI and the number of columns of the second precoding matrix is as shown in Table 2:
- the number of rows M / C, and the number of columns is N b .
- M represents the number of antenna ports of the CSI-RS.
- the transmitting end assumes that the second precoding matrix is applied to all resource elements in the second subband (Resource Flement, RF), the second precoding matrix selected by the transmitting end is a precoding matrix that has the highest degree of matching with the channel measurement of the first subband in all precoding matrices in the second codebook.
- the transmitting end determines a precoding matrix in the second codebook that has the smallest average distance from the RF channel matrix in the first subband as the second precoding matrix; or the transmitting end determines that the receiving end uses the second codebook.
- Each of the precoding matrices in the data transmission can support the amount of data supported by the data, and the precoding matrix corresponding to the maximum value of the data amount that can be supported is determined as the second precoding matrix.
- H k is a matrix of Nr ⁇ M columns
- H k [i, j] represents the ith in H k Row, the element of the jth column, that is, the complex channel coefficient of the jth antenna of the receiving end to the ith antenna of the transmitting end
- It is a matrix composed of the m1th column to the m2th column of Hk
- the second precoding matrix can be calculated by the following formula:
- the transmitting end selects a second precoding matrix from a predefined second codebook according to the result of the channel measurement in each period; the transmitting end will The second precoding matrix is used as the construction matrix, and the first codebook is determined according to the second precoding matrix.
- the second sub-band is identical to the first sub-band, or the second sub-band includes at least two first sub-bands. If the second sub-band includes at least two first sub-bands, the transmitting end determines the first sub-band separately for each first sub-band included in the second sub-band when determining the first pre-coding matrix The first precoding matrix for each resource.
- the sending end determines the first codebook according to the second precoding matrix, and includes the following three possible implementation manners:
- the transmitting end performs column switching on the column vectors in the second precoding matrix, and determines a set formed by the matrix obtained by the column switching as the first codebook.
- a plurality of matrices may be obtained by using different column switching manners, and the obtained set of the plurality of matrices is determined as the first codebook.
- a column of any one of the second precoding matrix is exchanged with other columns to obtain a plurality of matrices; for example, any two columns of the second precoding matrix are exchanged with other columns to obtain a plurality of matrices; For another example, any three columns in the second precoding matrix are column-exchanged with other columns to obtain a plurality of matrices, and so on.
- a combination of the foregoing manners may also be adopted. For example, if any one of the second precoding matrices is exchanged with other columns, a plurality of matrices may be obtained, and any two columns of the second precoding matrix are exchanged with other columns. A plurality of matrices are obtained, and the resulting set of all matrices is determined as the first codebook.
- the method b is specifically: the transmitting end performs a setting operation on the matrix in the preset matrix set and the set formed by the matrix obtained by the operation, and determines the set formed by the calculated matrix as the first codebook.
- the method c is specifically: the transmitting end decomposes the second precoding matrix into at least two component matrices, and sets at least one component matrix of the at least two component matrices to a matrix in a preset matrix set respectively. The operation is determined, and the set formed by the calculated matrix is determined as the first codebook.
- the matrix a is exchanged for each matrix in the set by mode a, according to the manner.
- the matrix in the matrix set and all the matrices formed after the column exchange constitute the first codebook.
- the embodiment of the present disclosure is not limited to determining the first codebook by using the above three methods, and other manners may also be adopted.
- the second method is specifically: the sending end selects a precoding matrix set as the first codebook from a preset precoding matrix set according to a result of channel measurement.
- the first indication information is index information of the first codebook in a preset precoding matrix set.
- the third method is specifically: the sending end selects a precoding matrix set from a preset precoding matrix set according to the result of the channel measurement; and the transmitting end selects the precoding matrix according to the result of the channel measurement.
- a precoding matrix subset is selected, and the selected precoding matrix subset is determined as the first codebook.
- the indication information of the first codebook includes index information of the selected precoding matrix set in a predefined precoding matrix set, and the selected precoding matrix subset is in the selected precoding matrix. Index information in the collection.
- the results of the channel measurement according to the selection of the precoding matrix set and the selection of the precoding matrix subset may be the same or different.
- the result of channel measurement when selecting a precoding matrix set and when selecting a precoding matrix subset may be different time or for different bandwidths.
- the sending end calculates the first CQI according to part or all of the precoding matrix in the first codebook, including:
- the transmitting end selects, from the first codebook, a precoding matrix for each RF as the first precoding matrix of the RF;
- the transmitting end calculates a first CQI corresponding to the first sub-band according to the first pre-coding matrix corresponding to the RF included in the first sub-band.
- the terminal first determines a first precoding matrix on each RF according to a certain rule, where different first RF precoding matrices may be different; then, for each first subband, the terminal assumes that the base station is The data is transmitted to the terminal by using the determined first precoding matrix on each RF in the first subband, and the channel quality information, that is, the first CQI is calculated under the assumption.
- the sender may select, according to the RF number included in the first subband, from the selected first codebook.
- the value of v is: the number of layers of the data stream, or the number of antenna ports at the transmitting end, or the number of RFs included in one resource block.
- the resource block may be a physical resource block (PRB) in the LTE system, or a subband, or a part of a physical resource block, or may be other partitioning forms.
- PRB physical resource block
- the first CQI is calculated according to the first codebook formed by the second precoding matrix determined by the terminal last time.
- the method further includes:
- the transmitting end selects a precoding matrix as the third precoding matrix from the first codebook according to the result of the channel measurement;
- the transmitting end calculates a second CQI according to the third precoding matrix
- the transmitting end sends identification information for identifying the third precoding matrix and information for indicating the second CQI to the receiving end.
- the sending end selects, according to the result of the channel measurement, the third precoding matrix selected from the first codebook for all resources in one subband, that is, all resources in one subband correspond to the same Three precoding matrices.
- the identifier information used to identify the third precoding matrix may be index information of the third precoding matrix in the first codebook.
- the transmitting end (such as the terminal) reports the first CQI and the second CQI, so that the receiving end (such as the base station) can flexibly select the transmission parameter according to the first CQI or the second CQI when performing data transmission. For example, if the transmitting end reports the first CQI first, and then reports the second CQI; if the receiving end performs data transmission with the transmitting end after receiving the second CQI, the receiving end may select the transmission parameter according to the second CQI; After receiving the second CQI, the terminal performs data transmission with the transmitting end after a long time, and the receiving end can select the transmission parameter according to the first CQI.
- the information used to represent the second CQI may be the second CQI, or may be a difference between the second CQI and the first CQI.
- the first indication information may be the first CQI, or may be a difference between the first CQI and the second CQI.
- the first codebook formed is exemplified by taking the above manner three as an example.
- each pre-defined set of precoding matrices (represented by the second PMI i2) comprises a plurality of precoding matrix subsets (represented by the first PMI i1), each precoding matrix
- There are two precoding matrices in the sub-set and one possible implementation form of the constructing matrix of the pre-coding matrix sub-set corresponding to the first PMI i1 and the second PMI i2 is: definition
- the first PMI precoding matrix subset i1 and I2 corresponding to the second PMI in matrix comprises: GZ 0 and GZ 1 (omitted power normalization factor).
- a possible implementation form of the first codebook formed based on G is as shown in Table 3:
- the length of the column vector v m in Table 3 is 4, and the number of corresponding CSI-RS ports is 8.
- the length of the vector v m may take other values depending on the number of CSI-RS ports and the form of the first codebook.
- each pre-defined precoding matrix set includes multiple precoding matrix subsets, and each precoding matrix subset has two precoding matrices, and the precoding matrix subsets pass
- the first PMI i1 indicates that one possible implementation form of the construction matrix of the precoding matrix subset corresponding to the first PMI i1 is: definition
- the precoding matrix of the precoding matrix subset corresponding to the first PMI i1 includes: GZ 0 and GZ 1 (the power normalization factor is omitted here), and then a possible implementation form of the first codebook formed based on G As shown in Table 4:
- each pre-defined set of precoding matrices (represented by the second PMI i2) comprises a plurality of precoding matrix subsets (represented by PMI i1), each precoding matrix subset
- PMI i1 precoding matrix subset 1
- PMI i2 precoding matrix subset 2
- the matrix in the precoding matrix subset corresponding to the first PMI i1 and the second PMI i2 includes: GZ 0 and GZ 1 (here the power normalization factor is omitted), and then based on the first codebook formed by G
- GZ 0 and GZ 1 here the power normalization factor is omitted
- each pre-defined set of precoding matrices (represented by the second PMI i2) comprises a plurality of precoding matrix subsets (represented by the first PMI i1), each precoding matrix
- There are two precoding matrices in the sub-set and one possible implementation form of the constructing matrix of the pre-coding matrix sub-set corresponding to the first PMI i1 and the second PMI i2 is: (column vector), the precoding matrix in the precoding matrix subset corresponding to the first PMI i1 and the second PMI i2 includes: with (The power normalization factor is omitted here.)
- Table 6 A possible implementation form of the first codebook based on G is shown in Table 6:
- Z n is taken from a predefined set of precoding matrices, for example:
- each pre-defined set of precoding matrices (represented by the second PMI i2) comprises a plurality of precoding matrix subsets (represented by the first PMI i1), each precoding matrix
- There are two precoding matrices in the sub-set and one possible implementation form of the constructing matrix of the pre-coding matrix sub-set corresponding to the first PMI i1 and the second PMI i2 is: definition
- the matrix in the precoding matrix subset corresponding to the first PMI i1 and the second PMI i2 includes: GZ 0, 0 and GZ 1, 1 (the power normalization factor is omitted here), and the first code formed based on G
- Table 7 A possible implementation form of this is shown in Table 7:
- each pre-defined set of precoding matrices (represented by the second PMI i2) comprises a plurality of precoding matrix subsets (represented by the first PMI i1), each precoding matrix
- There are two precoding matrices in the sub-set and one possible implementation form of the constructing matrix of the pre-coding matrix sub-set corresponding to the first PMI i1 and the second PMI i2 is: (column vector), the precoding matrix in the precoding matrix subset corresponding to the first PMI i1 and the second PMI i2 includes: with (The power normalization factor is omitted here.)
- Table 8 A possible implementation form of the first codebook based on G is shown in Table 8:
- Z n is taken from a predefined set of matrices, for example:
- a method for receiving feedback information includes:
- the receiving end receives the indication information that is sent by the sending end and is used to indicate the first codebook, and the indication information that is used to indicate the first CQI.
- the receiving end determines, according to the indication information used to represent the first codebook, the first codebook, where the precoding matrix included in the first codebook is transformed according to the same structural matrix. And determining, according to the indication information for indicating the first CQI, the first CQI information is calculated by the sending end based on a part or all of the precoding matrix in the first codebook.
- the above method processing flow can be implemented by a software program, which can be stored in a storage medium, and when the stored software program is called, the above method steps are performed.
- a device for transmitting feedback information includes:
- a determining module 31 configured to determine, according to a result of the channel measurement, a first codebook, where the precoding matrix included in the first codebook is transformed according to a same structural matrix;
- the calculating module 32 is configured to calculate a first CQI according to part or all of the precoding matrix in the first codebook
- the sending module 33 is configured to send first indication information for indicating the first codebook and second indication information for indicating the first CQI to the receiving end.
- the calculating module 32 is specifically configured to:
- one precoding matrix is selected for each resource unit RF as a first precoding matrix of the RF; for each first subband, according to the RF included in the first subband Corresponding the first precoding matrix, the first CQI corresponding to the first subband is calculated.
- the determining module 31 is specifically configured to:
- the determining module 31 is specifically configured to:
- a set of matrix formations is determined as the first codebook.
- the determining module 31 is specifically configured to:
- the first indication information is that the first codebook is in a predefined precoding matrix set. Index information in .
- the determining module 31 is specifically configured to:
- the first indication information includes index information of the selected precoding matrix set in a predefined precoding matrix set, and index information of the selected precoding matrix subset in the selected precoding matrix set. .
- the calculating module 32 is further configured to: select, according to a result of the channel measurement, a precoding matrix as a third precoding matrix from the first codebook; Encoding matrix, calculating a second CQI;
- the sending module 33 is further configured to: send identifier information for identifying the third precoding matrix and information for indicating the second CQI to the receiving end.
- a terminal is provided as a terminal, and as shown in FIG. 4, the terminal includes: a transmitter 41, and a transmitter 41 connected thereto. At least one processor 42, wherein:
- the processor 42 is configured to read the program in the memory 43 and perform the following process:
- the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 42 and various circuits of memory represented by memory 43.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits.
- the bus interface provides an interface.
- Transmitter 41 provides means for communicating with various other devices on a transmission medium.
- the user interface 44 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
- the processor 42 is responsible for managing the bus architecture and general processing, and the memory 43 can store data used by the processor 42 when performing operations.
- the processor 42 specifically executes:
- one precoding matrix is selected for each resource unit RF as a first precoding matrix of the RF; for each first subband, according to the RF included in the first subband Corresponding the first precoding matrix, the first CQI corresponding to the first subband is calculated.
- the processor 42 specifically executes:
- the processor 42 specifically executes:
- a set of matrix formations is determined as the first codebook.
- the processor 42 specifically executes:
- the first indication information is index information of the first codebook in a preset precoding matrix set.
- the processor 42 specifically executes:
- the first indication information includes the selected precoding matrix set in a predefined pre Index information in the set of encoding matrices, and index information of the selected subset of precoding matrices in the selected set of precoding matrices.
- the processor 42 further performs: selecting, according to a result of the channel measurement, a precoding matrix as a third precoding matrix from the first codebook; and according to the third precoding matrix, Calculating a second CQI; identifying, by the transmitter 41, the identification information of the third precoding matrix and the information for indicating the second CQI, and transmitting the information to the receiving end.
- a receiving device for providing feedback information is provided. As shown in FIG. 5, the device includes:
- the receiving module 51 is configured to receive, by the sending end, indication information for indicating the first codebook and indication information for indicating the first CQI;
- a determining module 52 configured to determine, according to the indication information used to represent the first codebook, the first codebook, where the precoding matrix included in the first codebook is transformed according to the same structural matrix, And determining, according to the indication information for indicating the first CQI, the first CQI information is calculated by the sending end based on a part or all of the precoding matrix in the first codebook.
- a receiving station is used as a base station as an example, and a base station is provided.
- the base station includes: a receiver 61, and at least a connection with the receiver 61.
- a processor 62 wherein:
- the processor 62 is configured to read the program in the memory 63 and perform the following process:
- the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 62 and various circuits of memory represented by memory 63. Linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits.
- the bus interface provides an interface. Receiver 61 provides means for communicating with various other devices on a transmission medium.
- the processor 62 is responsible for managing the bus architecture and general processing, and the memory 63 can store data used by the processor 62 when performing operations.
- embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
- computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
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Abstract
Description
RI | 第二预编码矩阵的长度L |
1 | M/2 |
2 | M/2 |
3 | M/4 |
4 | M/4 |
5 | M/8 |
6 | M/8 |
7 | M/8 |
8 | M/8 |
RI | 第二预编码矩阵的列数(C) |
1 | 2 |
2 | 2 |
3 | 4 |
4 | 4 |
5 | 8 |
6 | 8 |
7 | 8 |
8 | 8 |
Claims (20)
- 一种反馈信息的发送方法,包括:发送端根据信道测量的结果,确定第一码本,其中,所述第一码本中包含的预编码矩阵是根据同一构造矩阵变换得到的;所述发送端根据所述第一码本中的部分或全部预编码矩阵,计算得到第一信道质量指示(Channel Quality Indicator,CQI);所述发送端将用于表示所述第一码本的第一指示信息和用于表示所述第一CQI的第二指示信息,发送给接收端。
- 如权利要求1所述的方法,其中,所述发送端根据所述第一码本中的部分或全部预编码矩阵,计算得到第一CQI,包括:所述发送端从所述第一码本中,为每个资源单元(Resource Flement,RE)选择一个预编码矩阵,作为所述RE的第一预编码矩阵;对于每个第一子带,所述发送端根据所述第一子带包含的RE的第一预编码矩阵,计算得到所述第一子带对应的第一CQI。
- 如权利要求1所述的方法,其中,所述发送端根据信道测量的结果,确定第一码本,包括:所述发送端根据信道测量的结果,从预先定义的第二码本中,选择出第二预编码矩阵;所述发送端将所述第二预编码矩阵作为所述构造矩阵,并根据所述第二预编码矩阵,确定出所述第一码本,其中,所述第一指示信息为用于表示所述第二预编码矩阵的标识信息。
- 如权利要求3所述的方法,其中,所述发送端根据所述第二预编码矩阵,确定出所述第一码本,包括:所述发送端对所述第二预编码矩阵中的列向量进行列交换,并将列交换得到的矩阵形成的集合确定为所述第一码本;和/或所述发送端将所述第二预编码矩阵分别与预设的矩阵集合中的矩阵进行设定运算,并将运算得到的矩阵形成的集合确定为所述第一码本;和/或所述发送端将所述第二预编码矩阵分解成至少两个分量矩阵,将所述至少两个分量矩阵中的至少一个分量矩阵分别与预设的矩阵集合中的矩阵进行 设定运算,并将运算得到的矩阵形成的集合确定为所述第一码本。
- 如权利要求1所述的方法,其中,所述发送端根据信道测量的结果,确定第一码本,包括:所述发送端根据信道测量的结果,从预先定义的预编码矩阵集合中,选择一个预编码矩阵集合作为所述第一码本,其中,所述第一指示信息为所述第一码本在预先定义的预编码矩阵集合中的索引信息。
- 如权利要求1所述的方法,其中,所述发送端根据信道测量的结果,确定第一码本,包括:所述发送端根据信道测量的结果,从预先定义的预编码矩阵集合中,选择一个预编码矩阵集合;所述发送端根据信道测量的结果,从所选择的预编码矩阵集合中,选择一个预编码矩阵子集合,并将所选择的预编码矩阵子集合确定为所述第一码本,其中,所述第一指示信息包括所选择的预编码矩阵集合在预先定义的预编码矩阵集合中的索引信息、以及所选择的预编码矩阵子集合在所选择的预编码矩阵集合中的索引信息。
- 如权利要求1至6任一项所述的方法,还包括:所述发送端根据信道测量的结果,从所述第一码本中,选择一个预编码矩阵作为第三预编码矩阵;所述发送端根据所述第三预编码矩阵,计算得到第二CQI;所述发送端将用于标识所述第三预编码矩阵的标识信息和用于表示所述第二CQI的信息,发送给所述接收端。
- 一种反馈信息的接收方法,包括:接收端接收到发送端发送的用于表示第一码本的指示信息和用于表示第一CQI的指示信息;所述接收端根据用于表示所述第一码本的指示信息,确定出所述第一码本,所述第一码本中包含的预编码矩阵是根据同一构造矩阵变换得到的,以及根据用于表示第一CQI的指示信息,确定出第一CQI,所述第一CQI是所 述发送端基于所述第一码本中的部分或全部的预编码矩阵计算得到的。
- 如权利要求8所述的方法,其中,所述第一码本的指示信息为用于表示第二预编码矩阵的标识信息,所述第二预编码矩阵为所述发送端根据信道测量的结果,从预先定义的第二码本中,选择出的预编码矩阵;或者所述第一码本的指示信息为所述第一码本在预先定义的预编码矩阵集合中的索引信息;或者所述第一码本的指示信息包括所述发送端所选择的预编码矩阵集合在预先定义的预编码矩阵集合中的索引信息、以及所述发送端所选择的预编码矩阵子集合在所选择的预编码矩阵集合中的索引信息。
- 一种反馈信息的发送装置,包括:确定模块,用于根据信道测量的结果,确定第一码本,其中,所述第一码本中包含的预编码矩阵是根据同一构造矩阵变换得到的;计算模块,用于根据所述第一码本中的部分或全部预编码矩阵,计算得到第一CQI;发送模块,用于将用于表示所述第一码本的第一指示信息和用于表示所述第一CQI的第二指示信息,发送给接收端。
- 如权利要求10所述的装置,其中,所述计算模块具体用于:从所述第一码本中,为每个RE选择一个预编码矩阵,作为所述RE的第一预编码矩阵;对于每个第一子带,根据所述第一子带包含的RE对应的第一预编码矩阵,计算得到所述第一子带对应的第一CQI。
- 如权利要求10所述的装置,其中,所述确定模块具体用于:根据信道测量的结果,从预先定义的第二码本中,选择出第二预编码矩阵;将所述第二预编码矩阵作为所述构造矩阵,并根据所述第二预编码矩阵,确定出所述第一码本;其中,所述第一指示信息为用于表示所述第二预编码矩阵的标识信息。
- 如权利要求12所述的装置,其中,所述确定模块具体用于:对所述第二预编码矩阵中的列向量进行列交换,并将列交换得到的矩阵形成的集合确定为所述第一码本;和/或将所述第二预编码矩阵分别与预设的矩阵集合中的矩阵进行设定运算,并将运算得到的矩阵形成的集合确定为所述第一码本;和/或将所述第二预编码矩阵分解成至少两个分量矩阵,将所述至少两个分量矩阵中的至少一个分量矩阵分别与预设的矩阵集合中的矩阵进行设定运算,并将运算得到的矩阵形成的集合确定为所述第一码本。
- 如权利要求10所述的装置,其中,所述确定模块具体用于:根据信道测量的结果,从预先定义的预编码矩阵集合中,选择一个预编码矩阵集合作为所述第一码本,其中,所述第一指示信息为所述第一码本在预先定义的预编码矩阵集合中的索引信息。
- 如权利要求10所述的装置,其中,所述确定模块具体用于:根据信道测量的结果,从预先定义的预编码矩阵集合中,选择一个预编码矩阵集合;根据信道测量的结果,从所选择的预编码矩阵集合中,选择一个预编码矩阵子集合,并将所选择的预编码矩阵子集合确定为所述第一码本,其中,所述第一指示信息包括所选择的预编码矩阵集合在预先定义的预编码矩阵集合中的索引信息、以及所选择的预编码矩阵子集合在所选择的预编码矩阵集合中的索引信息。
- 如权利要求10至15任一项所述的装置,其中,所述计算模块还用于:根据信道测量的结果,从所述第一码本中,选择一个预编码矩阵作为第三预编码矩阵;根据所述第三预编码矩阵,计算得到第二CQI;所述发送模块还用于:将用于标识所述第三预编码矩阵的标识信息和用于表示所述第二CQI的信息,发送给所述接收端。
- 一种反馈信息的接收装置,包括:接收模块,用于接收到发送端发送的用于表示第一码本的指示信息和用于表示第一CQI的指示信息;确定模块,用于根据用于表示所述第一码本的指示信息,确定出所述第一码本,所述第一码本中包含的预编码矩阵是根据同一构造矩阵变换得到的,以及根据用于表示第一CQI的指示信息,确定出第一CQI,所述第一CQI信 息是所述发送端基于所述第一码本中的部分或全部的预编码矩阵计算得到的。
- 如权利要求17所述的装置,其中,所述第一码本的指示信息为用于表示第二预编码矩阵的标识信息,所述第二预编码矩阵为所述发送端根据信道测量的结果,从预先定义的第二码本中,选择出的预编码矩阵;或者所述第一码本的指示信息为所述第一码本在预先定义的预编码矩阵集合中的索引信息;或者所述第一码本的指示信息包括所述发送端所选择的预编码矩阵集合在预先定义的预编码矩阵集合中的索引信息、以及所述发送端所选择的预编码矩阵子集合在所选择的预编码矩阵集合中的索引信息。
- 一种反馈信息的发送装置,包括:发射机、以及与该发射机连接的至少一个处理器,其中处理器用于读取存储器中的程序,执行下列过程:根据信道测量的结果,确定第一码本,其中,所述第一码本中包含的预编码矩阵是根据同一构造矩阵变换得到的;根据所述第一码本中的部分或全部预编码矩阵,计算得到第一CQI;将用于表示所述第一码本的第一指示信息和用于表示所述第一CQI的第二指示信息,通过发射机发送给接收端。
- 一种反馈信息的接收装置,包括:接收机、以及与该接收机连接的至少一个处理器,其中处理器用于读取存储器中的程序,执行下列过程:通过接收机接收到发送端发送的用于表示第一码本的指示信息和用于表示第一CQI的指示信息;根据用于表示所述第一码本的指示信息,确定出所述第一码本,所述第一码本中包含的预编码矩阵是根据同一构造矩阵变换得到的,以及根据用于表示第一CQI的指示信息,确定出第一CQI,所述第一CQI信息是所述发送端基于所述第一码本中的部分或全部的预编码矩阵计算得到的。
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CN109150266A (zh) * | 2017-06-16 | 2019-01-04 | 华为技术有限公司 | 信道状态信息的传输方法、接入网设备和终端设备 |
WO2020191591A1 (en) * | 2019-03-25 | 2020-10-01 | Nokia Shanghai Bell Co., Ltd. | Precoding of massive mimo |
CN110535509B (zh) * | 2019-08-16 | 2024-09-27 | 中兴通讯股份有限公司 | 一种信息反馈和接收方法、装置和存储介质 |
JPWO2021145409A1 (zh) * | 2020-01-17 | 2021-07-22 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102468947A (zh) * | 2010-11-05 | 2012-05-23 | 大唐移动通信设备有限公司 | 信道质量信息的反馈方法和设备 |
US20130083758A1 (en) * | 2011-10-04 | 2013-04-04 | Samsung Electronics Co., Ltd. | Method and apparatus for reporting channel state information in a wireless communication system |
CN103840868A (zh) * | 2012-11-20 | 2014-06-04 | 电信科学技术研究院 | 一种指示和反馈信道质量信息的方法、设备及系统 |
CN104396153A (zh) * | 2012-05-18 | 2015-03-04 | 三星电子株式会社 | 用于蜂窝无线通信系统的信道状态信息码字构造的方法和装置 |
US20160072567A1 (en) * | 2013-04-29 | 2016-03-10 | Lg Electronics Inc. | Method and apparatus for transmitting channel state information in wireless communication system |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8072899B2 (en) | 2008-07-02 | 2011-12-06 | Interdigital Patent Holdings, Inc. | Method and apparatus for measuring and reporting a rank and a precoding matrix for multiple-input multiple-output communication |
US8923143B2 (en) | 2009-06-29 | 2014-12-30 | Qualcomm Incorporated | Open loop channel reporting in a wireless communication system |
GB2479377B (en) * | 2010-04-07 | 2013-08-14 | Toshiba Res Europ Ltd | Dual indicator scheme for channel state information feedback |
CN102237955B (zh) | 2010-05-07 | 2013-11-06 | 电信科学技术研究院 | 一种信道状态信息上报方法及其装置 |
US8599761B2 (en) | 2010-05-14 | 2013-12-03 | Samsung Electronics Co., Ltd. | Systems and methods for PUCCH feedback in 3GPP wireless networks |
WO2013168958A1 (ko) * | 2012-05-07 | 2013-11-14 | 엘지전자 주식회사 | 하향링크 데이터 수신 방법 및 사용자기기와 하향링크 데이터 전송 방법 및 기지국 |
EP2863570B1 (en) * | 2012-06-14 | 2019-09-18 | Huawei Technologies Co., Ltd. | Method, user equipment, and base station evolved node for determining precoding matrix indicator |
KR102257623B1 (ko) * | 2012-07-02 | 2021-05-28 | 엘지전자 주식회사 | 무선 통신 시스템에서 채널상태정보 보고 방법 및 장치 |
KR101971079B1 (ko) * | 2012-09-20 | 2019-08-13 | 삼성전자 주식회사 | 이동통신 시스템에서 피드백 송수신 방법 및 장치 |
US9105702B2 (en) | 2012-11-16 | 2015-08-11 | International Business Machines Corporation | Transistors from vertical stacking of carbon nanotube thin films |
US9698887B2 (en) | 2013-03-08 | 2017-07-04 | Qualcomm Incorporated | Systems and methods for enhanced MIMO operation |
CN104144007B (zh) * | 2013-05-09 | 2018-01-30 | 电信科学技术研究院 | 一种基于码本的信息反馈方法和装置 |
-
2016
- 2016-03-11 CN CN201610140780.9A patent/CN107196690B/zh active Active
-
2017
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102468947A (zh) * | 2010-11-05 | 2012-05-23 | 大唐移动通信设备有限公司 | 信道质量信息的反馈方法和设备 |
US20130083758A1 (en) * | 2011-10-04 | 2013-04-04 | Samsung Electronics Co., Ltd. | Method and apparatus for reporting channel state information in a wireless communication system |
CN104396153A (zh) * | 2012-05-18 | 2015-03-04 | 三星电子株式会社 | 用于蜂窝无线通信系统的信道状态信息码字构造的方法和装置 |
CN103840868A (zh) * | 2012-11-20 | 2014-06-04 | 电信科学技术研究院 | 一种指示和反馈信道质量信息的方法、设备及系统 |
US20160072567A1 (en) * | 2013-04-29 | 2016-03-10 | Lg Electronics Inc. | Method and apparatus for transmitting channel state information in wireless communication system |
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