WO2019047754A1 - 一种信道反馈的方法及相关设备 - Google Patents

一种信道反馈的方法及相关设备 Download PDF

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Publication number
WO2019047754A1
WO2019047754A1 PCT/CN2018/102962 CN2018102962W WO2019047754A1 WO 2019047754 A1 WO2019047754 A1 WO 2019047754A1 CN 2018102962 W CN2018102962 W CN 2018102962W WO 2019047754 A1 WO2019047754 A1 WO 2019047754A1
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Prior art keywords
vector
matrix
elements
information
frequency domain
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English (en)
French (fr)
Inventor
张瑞齐
周永行
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to EP18853061.2A priority Critical patent/EP3675388B1/en
Publication of WO2019047754A1 publication Critical patent/WO2019047754A1/zh
Priority to US16/811,002 priority patent/US11265045B2/en
Anticipated expiration legal-status Critical
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0417Feedback systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • H04B7/0615Diversity 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
    • H04B7/0619Diversity 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
    • H04B7/0621Feedback content
    • H04B7/0626Channel coefficients, e.g. channel state information [CSI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0478Special codebook structures directed to feedback optimisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • H04B7/0615Diversity 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
    • H04B7/0619Diversity 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
    • H04B7/0658Feedback reduction
    • H04B7/0663Feedback reduction using vector or matrix manipulations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202Channel estimation
    • H04L25/0204Channel estimation of multiple channels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202Channel estimation
    • H04L25/022Channel estimation of frequency response
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202Channel estimation
    • H04L25/0224Channel estimation using sounding signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006Arrangements for removing intersymbol interference
    • H04L25/03343Arrangements at the transmitter end
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03891Spatial equalizers
    • H04L25/03898Spatial equalizers codebook-based design
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communications, and in particular, to a method for channel feedback and related devices.
  • LTE Long term evolution
  • MIMO multiple input and multiple output
  • SFBC space frequency block code
  • a multi-layer parallel transmission mode is used to provide a higher data transmission rate.
  • precoding technology can be used to improve the signal transmission quality or rate.
  • TDD time division duplexing
  • a pre-coding weighting matrix is generally obtained by using a method in which a terminal user feeds back a precoding vector.
  • NR New Radio access technology
  • Type II type II codebook
  • the number of quantization bits determines the size of the channel status information reported by the UE.
  • the existing solution is to perform frequency domain compression on the coefficients in W 2 , which is based on the specific principle that the parameters on each resource block (RB) are consecutive between adjacent resource blocks.
  • the phase is continuous from the entire bandwidth. Therefore, the parameters can be compressed in the frequency domain, and the specific method includes forming the phase on each RB into a vector.
  • Perform a Fourier transform operation on the vector which may be an inverse discrete fourier transform (IDFT) or a discrete fourier transform (DFT), and then operate after the Fourier transform
  • IDFT inverse discrete fourier transform
  • DFT discrete fourier transform
  • the embodiment of the present application provides a channel feedback method and related device, which is used to reduce the energy dispersion after the Fourier transform operation, reduce the number of coefficients that need to be reported, and reduce the overhead of uplink resources.
  • the energy dispersion is greatly reduced, thereby reducing the number of coefficients that need to be reported, and reducing the overhead of uplink resources.
  • the kth element c k of the vector C is included in the second matrix W 2 of the kth frequency domain subband
  • the corresponding vector is V (i, j)
  • the channel state information includes the wideband channel state information and the subband channel state information, where the reporting of the subband channel state information occupies a large time-frequency resource, and the first information is reported by q, m 1 , m 2 , ..., m L , and vector V to construct sub-band channel state information in the channel state information, thereby reducing the consumption of uplink time-frequency resources.
  • X 1 is a matrix of row I columns
  • X 1 [b 1 b 2 ... b I ], where vector b i is included
  • the column vector of each element, each b i vector is orthogonal to each other, 1 ⁇ i ⁇ I, and I is a positive integer greater than or equal to 1.
  • W 1 is defined.
  • the number of elements in the matrix W 2 k is usually smaller than the number of elements in the matrix W k , which can further reduce the requirement for reporting W 2 k The number of bits.
  • each matrix In the i-th row and j-th column elements, p i,j are the same.
  • p i,j in the matrix is defined, and the limitation will be
  • the coefficient is divided into a form in which the wideband coefficient and the subband coefficient are multiplied, wherein the number of bits required for reporting the wideband coefficient p i,j is small, and the method of the present application is used to reduce the number of bits required to report the subband coefficient.
  • decoupling the wideband coefficients and the subband coefficients in W 2 k is advantageous to reduce the number of bits required to report the vector V.
  • W k is a precoding matrix of the kth subband in the frequency domain.
  • W k in the matrix is defined, and an implementation manner of the present application is clarified.
  • Wk is a channel frequency domain response of the kth subband in the frequency domain.
  • W k in the matrix is defined, and an implementation manner of the present application is clarified.
  • the first information includes indication information of R, and R is a rank of a channel matrix.
  • R is a rank of a channel matrix.
  • R is the number of receiving antennas of the terminal.
  • L is a vector of each of the elements V (i, j) in the l th element of V (i, j ) (l) constituting the product of the first sequence S Satisfy Said Is the indication information of the vector V.
  • the quantization loss due to the quantization of each element in V (i, j) is avoided.
  • the first one of the L elements in each of the vectors V (i, j) is used Bits to represent, among them.
  • the quantization of the elements in the matrix is defined, and another possible vector V reporting manner is provided.
  • the quantization manner of the elements in the matrix is limited.
  • each element in V (i,j) corresponding to it can use fewer quantization bits, which can further reduce the load of the uplink feedback.
  • the quantization manner of the elements in the matrix is limited. For example , among the elements in an i, j, V (i, j) , the elements with larger absolute values may use more quantization bits. Representation, while elements with smaller absolute values can be represented by fewer quantization bits, which can further reduce the load of the uplink feedback.
  • At least i 1 , i 2 , j 1 , j 2 are present , such that The number of elements included is not equal to The number of elements included, where i 1 ⁇ i 2 or j 1 ⁇ j 2 .
  • the number of elements in the vector is limited, for example, a vector And vector Can contain different numbers of elements to make with Different loads can be used to indicate, so that the efficiency of the uplink feedback load can be improved.
  • c N] T c k indicates a channel state information for the first frequency-domain subband k, and C k is a complex mold, the C k
  • the network device sends the reference information to the terminal device, and receives the first information sent by the terminal device, where the first information includes a vector V, and the vector V is obtained by performing frequency domain compression according to the vector C reflecting the channel state information, and
  • the energy dispersion after the Fourier transform operation is greatly reduced, so that the number of coefficients included in the first information received by the network device is reduced. , reduce the overhead of uplink resources.
  • the kth element c k of the vector C is included in the second matrix W 2 of the kth frequency domain subband
  • the corresponding vector is V (i, j)
  • the channel state information includes the wideband channel state information and the subband channel state information, where the reporting of the subband channel state information occupies a large time-frequency resource, and the first information is reported by q, m 1 , . m L , and the vector V construct the sub-band channel state information in the channel state information, thereby reducing the consumption of the uplink time-frequency resource.
  • X 1 is a matrix of row I columns
  • X 1 [b 1 b 2 ... b I ], where vector b i is included
  • the column vector of each element, each b i vector is orthogonal to each other, 1 ⁇ i ⁇ I, and I is a positive integer greater than or equal to 1.
  • W 1 is defined.
  • the number of elements in the matrix W 2 k is usually smaller than the number of elements in the matrix W k , which can further reduce the requirement for reporting W 2 k The number of bits.
  • each matrix In the i-th row and j-th column elements, p i,j are the same.
  • p i,j in the matrix is defined, and the limitation will be
  • the coefficient is divided into a form in which the wideband coefficient and the subband coefficient are multiplied, wherein the number of bits required for reporting the wideband coefficient p i,j is small, and the method of the present application is used to reduce the number of bits required to report the subband coefficient.
  • decoupling the wideband coefficients and the subband coefficients in W 2 k is advantageous to reduce the number of bits required to report the vector V.
  • W k is a precoding matrix of the kth subband in the frequency domain.
  • W k in the matrix is defined, and an implementation manner of the present application is clarified.
  • Wk is a channel frequency domain response of the kth subband in the frequency domain.
  • W k in the matrix is defined, and an implementation manner of the present application is clarified.
  • the first information includes indication information of R, and R is a rank of a channel matrix.
  • R is a rank of a channel matrix.
  • R is the number of receiving antennas of the terminal device.
  • L is a vector of each of the elements V (i, j) in the l th element of V (i, j ) (l) constituting the product of the first sequence S Satisfy Said Is the indication information of the vector V.
  • the quantization loss due to the quantization of each element in V (i, j) is avoided.
  • the first one of the L elements in each of the vectors V (i, j) is used. Bits to represent, among them, In the embodiment of the present application, the quantization of the elements in the matrix is defined, and another possible vector V reporting manner is provided.
  • the quantization manner of the elements in the matrix is limited.
  • each element in V (i,j) corresponding to it can use fewer quantization bits, which can further reduce the load of the uplink feedback.
  • the quantization manner of the elements in the matrix is limited. For example , among the elements in an i, j, V (i, j) , the elements with larger absolute values may use more quantization bits. Representation, while elements with smaller absolute values can be represented by fewer quantization bits, which can further reduce the load of the uplink feedback.
  • At least i 1 , i 2 , j 1 , j 2 are present , such that The number of elements included is not equal to The number of elements included, where i 1 ⁇ i 2 or j 1 ⁇ j 2 .
  • the number of elements in the vector is limited, for example, a vector And vector Can contain different numbers of elements to make with Different loads can be used to indicate, so that the efficiency of the uplink feedback load can be improved.
  • c N indicates a channel state information for the first frequency-domain subband k
  • C k is a complex mold, the C k
  • the lth row vector in q satisfies: or
  • a sending unit configured to send the first information to the network device.
  • the kth element c k of the vector C is included in the second matrix W 2 k of the kth frequency domain subband
  • the corresponding vector is V (i, j
  • the channel state information includes the wideband channel state information and the subband channel state information, where the reporting of the subband channel state information occupies a large time-frequency resource, and the first information is reported by q, m 1 , . m L , and the vector V construct the sub-band channel state information in the channel state information, thereby reducing the consumption of the uplink time-frequency resource.
  • X 1 is a matrix of row I columns
  • X 1 [b 1 b 2 ... b I ], where vector b i is included
  • the column vector of each element, each b i vector is orthogonal to each other, 1 ⁇ i ⁇ I, and I is a positive integer greater than or equal to 1.
  • W 1 is defined.
  • the number of elements in the matrix W 2 k is usually smaller than the number of elements in the matrix W k , which can further reduce the requirement for reporting W 2 k The number of bits.
  • each matrix In the i-th row and j-th column elements, p i,j are the same.
  • p i,j in the matrix is defined, and the limitation will be
  • the coefficient is divided into a form in which the wideband coefficient and the subband coefficient are multiplied, wherein the number of bits required for reporting the wideband coefficient p i,j is small, and the method of the present application is used to reduce the number of bits required to report the subband coefficient.
  • decoupling the wideband coefficients and the subband coefficients in W 2 k is advantageous to reduce the number of bits required to report the vector V.
  • W k is a precoding matrix of the kth subband in the frequency domain.
  • the W k in the matrix is defined, and an implementation manner of the application is clarified, so that the application is more logical.
  • W k is a channel frequency domain response of the kth subband in the frequency domain.
  • W k in the matrix is defined, and an implementation manner of the present application is clarified.
  • the first information includes indication information of R, and R is a rank of a channel matrix.
  • R is a rank of a channel matrix.
  • R is the number of receiving antennas of the terminal.
  • L is a vector of each of the elements V (i, j) in the l th element of V (i, j ) (l) constituting the product of the first sequence S Satisfy Said Is the indication information of the vector V.
  • a method for processing a vector V (i, j) is provided, that is, each element in the vector V (i, j) is modulated onto a sequence, and the modulation sequence is sent to the network device. . The quantization loss due to the quantization of each element in V (i, j) is avoided.
  • the first one of the L elements in each of the vectors V (i, j) is used. Bits to represent, among them, In the embodiment of the present application, the quantization of the elements in the matrix is defined, and another possible vector V reporting manner is provided.
  • the quantization manner of the elements in the matrix is limited.
  • each element in V (i,j) corresponding to it can use fewer quantization bits, which can further reduce the load of the uplink feedback.
  • the quantization manner of the elements in the matrix is limited. For example , among the elements in an i, j, V (i, j) , the elements with larger absolute values may use more quantization bits. Representation, while elements with smaller absolute values can be represented by fewer quantization bits, which can further reduce the load of the uplink feedback.
  • At least i 1 , i 2 , j 1 , j 2 are present , such that The number of elements included is not equal to The number of elements included, where i 1 ⁇ i 2 or j 1 ⁇ j 2 .
  • the number of elements in the vector is limited, for example, a vector And vector Can contain different numbers of elements to make with Different loads can be used to indicate, so that the efficiency of the uplink feedback load can be improved.
  • c k is used to represent channel state information of the kth frequency domain subband, and c k is a complex number, and c k has a modulus
  • the first row vector in the matrix F q satisfies: or
  • the network device sends the reference information to the terminal device, and receives the first information sent by the terminal device, where the first information includes a vector V, and the vector V is obtained by performing frequency domain compression according to the vector C reflecting the channel state information, and
  • the energy dispersion after the Fourier transform operation is greatly reduced, so that the number of coefficients included in the first information received by the network device is reduced. , reduce the overhead of uplink resources.
  • the kth element c k of the vector C is included in the second matrix W 2 of the kth frequency domain subband
  • the corresponding vector is V (i, j
  • the channel state information includes the wideband channel state information and the subband channel state information, where the reporting of the subband channel state information occupies a large time-frequency resource, and the first information is reported by q, m 1 , . m L , and the vector V construct the sub-band channel state information in the channel state information, thereby reducing the consumption of the uplink time-frequency resource.
  • X 1 is a matrix of row I columns
  • X 1 [b 1 b 2 ... b I ], where vector b i is included
  • the column vector of each element, each b i vector is orthogonal to each other, 1 ⁇ i ⁇ I, and I is a positive integer greater than or equal to 1.
  • W 1 is defined.
  • the number of elements in the matrix W 2 k is usually smaller than the number of elements in the matrix W k , which can further reduce the requirement for reporting W 2 k The number of bits.
  • each matrix In the i-th row and j-th column elements, p i,j are the same.
  • p i,j in the matrix is defined, and the limitation will be
  • the coefficient is divided into a form in which the wideband coefficient and the subband coefficient are multiplied, wherein the number of bits required for reporting the wideband coefficient p i,j is small, and the method of the present application is used to reduce the number of bits required to report the subband coefficient.
  • decoupling the wideband coefficients and the subband coefficients in W 2 k is advantageous to reduce the number of bits required to report the vector V.
  • W k is a precoding matrix of the kth subband in the frequency domain.
  • W k in the matrix is defined, and an implementation manner of the present application is clarified.
  • W k is a channel frequency domain response of the kth subband in the frequency domain.
  • W k in the matrix is defined, and an implementation manner of the present application is clarified.
  • the first information includes indication information of R, and R is a rank of a channel matrix.
  • R is a rank of a channel matrix.
  • R is the number of receiving antennas of the terminal device.
  • L is a vector of each of the elements V (i, j) in the l th element of V (i, j ) (l) constituting the product of the first sequence S Satisfy Said Is the indication information of the vector V.
  • the quantization loss due to the quantization of each element in V (i, j) is avoided.
  • the first one of the L elements in each of the vectors V (i, j) is used. Bits to represent, among them, In the embodiment of the present application, the quantization of the elements in the matrix is defined, and another possible vector V reporting manner is provided.
  • the quantization manner of the elements in the matrix is limited.
  • each element in V (i,j) corresponding to it can use fewer quantization bits, which can further reduce the load of the uplink feedback.
  • the quantization manner of the elements in the matrix is limited. For example , among the elements in an i, j, V (i, j) , the elements with larger absolute values may use more quantization bits. Representation, while elements with smaller absolute values can be represented by fewer quantization bits, which can further reduce the load of the uplink feedback.
  • At least i 1 , i 2 , j 1 , j 2 are present , such that The number of elements included is not equal to The number of elements included, where i 1 ⁇ i 2 or j 1 ⁇ j 2 .
  • the number of elements in the vector is limited, for example, a vector And vector Can contain different numbers of elements to make with Different loads can be used to indicate, so that the efficiency of the uplink feedback load can be improved.
  • a fifth aspect of the present application provides a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the methods described in the above aspects.
  • a sixth aspect of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods described in the various aspects above.
  • a seventh aspect of the present application provides a chip, the chip comprising an input interface, an output interface, at least one processor, and at least one memory, the at least one memory for storing code, the at least one processor for executing The code in the memory is used to perform the method described in the above aspects when the code is executed.
  • An eighth aspect of the present application provides a chip system including a processor for supporting a terminal device and a network device to implement the functions involved in the above aspects, for example, transmitting or processing data involved in the above method and / or information.
  • the chip system further comprises a memory for storing necessary program instructions and data of the terminal device and the network device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the ninth aspect of the present application further provides a communication system, including the terminal device and the network device in the above aspect, where the terminal device and the network device are used to perform the method described in the above aspect.
  • FIG. 1 is a schematic diagram of energy dispersion after a Fourier transform of a vector in the prior art
  • FIG. 2 is a schematic diagram of a network architecture applied to an embodiment of the present application
  • FIG. 3 is a schematic diagram of an embodiment of a method for channel feedback according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of an embodiment of a terminal device according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of an embodiment of a network device according to an embodiment of the present application.
  • FIG. 6A is a schematic diagram of another embodiment of a terminal device according to an embodiment of the present application.
  • 6B is a schematic diagram of another embodiment of a terminal device according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another embodiment of a network device according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another embodiment of a terminal device according to an embodiment of the present application.
  • the embodiment of the present application provides a channel feedback method and related device, which is used to reduce the energy dispersion after the Fourier transform operation, reduce the number of coefficients that need to be reported, and reduce the overhead of uplink resources.
  • the embodiment of the present application can be applied to a network architecture as shown in FIG. 2, in which a network device (base station) and a terminal device (handset) perform signal transmission, and the device for transmitting a reference signal in this application is called Network equipment.
  • the embodiment in the present application is described by using a network device to send a reference signal to the terminal device.
  • the terminal device determines, according to the reference signal, the first information that needs to be reported, first.
  • the information is used to indicate status information of the downlink channel, and the first information is sent to the network device by using the uplink channel.
  • an embodiment of the method for channel feedback in the embodiment of the present application includes:
  • the network device sends a reference signal to the terminal device.
  • the network device sends a reference signal to the terminal device, where the reference signal is used to determine first information, and the first information is used to indicate channel state information.
  • the network device sends a preset reference signal to the terminal device, where the reference signal is a channel state information reference signal (CSI-RS), and the CSI-RS is used to measure the first channel state information.
  • the first channel is a downlink channel.
  • the network device may select different manners to transmit reference signals according to actual conditions.
  • the CSI-RS is transmitted in any number of symbol periods in each CSI-RS subframe.
  • the CSI-RS may be sent in different periods.
  • the CSI-RS may be transmitted every 2 or 10 subframes, or may be separated by other numbers of subframes, which is not limited herein.
  • the terminal device generates first information.
  • the terminal device generates first information, where the first information includes parameters q, m 1 , m 2 , . . . , m L , and indication information of the vector V.
  • q is an integer and q ⁇ Q; Q is an integer, and Q>1; 0 ⁇ m l ⁇ N-1,1 ⁇ l ⁇ L; L>1, N, L, l are integers, and N is a frequency domain The number of subbands in the bandwidth.
  • W k is a matrix of N t rows and R columns
  • W 1 is a matrix of N t rows 2 I columns, where 2I ⁇ R
  • W 2 k is a matrix of 2 I rows and R columns
  • the ith row in the W 2 k Elements of column j Satisfy
  • p i,j is a real number and 0 ⁇ p i,j ⁇ 1,
  • W 2 k contains At least i, j is present In the W 2 k
  • the corresponding vector is V (i, j) .
  • the kth element c k of the vector C is a product factor of the elements of the i th row and the j th column of the second matrix W 2 k
  • W 2 k is the second matrix of the kth frequency domain subband.
  • W 1 is defined, in which the number of elements in the matrix W 2 k is usually smaller than the number of elements in the matrix W k , and the bits required for reporting W 2 k can be further reduced. Number.
  • each matrix In the i-th row and j-th column elements, p i,j are the same.
  • p i,j in the matrix is defined, and the limit will The coefficient is divided into a form in which the wideband coefficient and the subband coefficient are multiplied, wherein the number of bits required for reporting the wideband coefficient p i,j is small, and the method of the present application is used to reduce the number of bits required to report the subband coefficient.
  • decoupling the wideband coefficients and the subband coefficients in W 2 k is advantageous to reduce the number of bits required to report the vector V.
  • Wk is the precoding matrix of the kth subband of the frequency domain.
  • the first information includes indication information of R and R is a rank of a channel matrix.
  • R is a rank of a channel matrix.
  • the W 2 k may also be another form, and the i-th row and the j-th column element in W 2 k may be expressed as: among them Indicates the amplitude information of the broadband, Indicates the amplitude information of the subband, Indicates phase information. specific, or Wherein, r represents the polarization direction of the antenna dimension index, l represents the number of the data layer, m represents the number 1 W is block diagonal matrix column vector X 1.
  • the W 2 k has the following form:
  • the W 2 k has the following form:
  • Wk is the channel frequency domain response of the kth subband of the frequency domain.
  • R is the number of receive antennas of the terminal.
  • the terminal device performs frequency domain compression on the vector C, and has various implementation manners.
  • an oversampled inverse discrete Fourier transform (IDFT) or a discrete fourier transform (DFT) method is used.
  • IDFT oversampled inverse discrete Fourier transform
  • DFT discrete fourier transform
  • the lth row vector satisfies:
  • the principle of selecting the vector V q includes, but is not limited to, the energy and maximum of the L elements in the V q .
  • C For another example, at the end of the vector C, (N(Q-1)) 0s are added to form C', and then C' is a (NQ ⁇ 1) column vector.
  • Determine V q in C (q) ' and determine the factors q, m 1 , m 2 , ... corresponding to the vector V q using the same principle as above.
  • m L-1 can also be other implementations, which are not limited herein. It can be understood that for V q with different values of q , when q, m 1 , m 2 , ..., m L is determined At the time, the vector V q is also determined, and V q is the vector V.
  • the terminal device performs a report processing on the first information.
  • the terminal device generates first information, where the first information includes parameters q, m 1 , m 2 , . . . , m L , and indication information of the vector V.
  • the terminal device can have two different reporting modes for the vector V: the quantization reporting process and the analog reporting process.
  • the terminal device performs quantization reporting processing on the vector V, the amplitude and phase in the vector V are separately quantized.
  • the terminal device sends the first information to the network device.
  • the terminal device sends first information to the network device, where the first information includes a factor q and an index m l of L row vectors constituting the matrix F q , and indication information of the vector V.
  • the first information reported includes the index q and the indices m 1 , m 2 , . . . , m L of the L row vectors constituting the matrix F q , and the indication information of the vector V, the indication information is used to determine the L in the vector V Elements.
  • the kth element in vector C is from a matrix Matrix
  • the matrix of the R column of 2I rows, the elements of the jth column of the i th row is One of the implementations is that the kth element in vector C can be taken from the matrix. Any element in , such as by The constructed vector can be written as C (i, j) , and the vector V corresponding to the vector C (i, j) is denoted as V (i, j) .
  • each of the L elements in each of the vectors V (i, j) is used Bits to indicate,
  • l 1 , l 2 , i 1 , i 2 , j 1 , j 2 there are at least l 1 , l 2 , i 1 , i 2 , j 1 , j 2 such that At least one of the inequalities is satisfied: l 1 ⁇ l 2 , i 1 ⁇ i 2 , j 1 ⁇ j 2 .
  • the quantization method of the elements in the matrix is defined.
  • each element in V (i,j) corresponding to it can use fewer quantization bits, which can further reduce the load of the uplink feedback.
  • the quantization method of the elements in the matrix is limited. For example , among the elements in an i, j, V (i, j) , the elements with larger absolute values can be represented by more quantization bits. Elements with smaller absolute values can be represented by fewer quantization bits, which can further reduce the load of the uplink feedback.
  • At least i 1 , i 2 , j 1 , j 2 are present such that The number of elements included is not equal to The number of elements included, where i 1 ⁇ i 2 or j 1 ⁇ j 2 .
  • the number of elements in the vector is limited, for example, a vector And vector Can contain different numbers of elements to make with Different loads can be used to indicate, so that the efficiency of the uplink feedback load can be improved.
  • H is a matrix of N t ⁇ N r
  • W 1 is a matrix of N t ⁇ 2I
  • W 2 is a matrix of 2I ⁇ N r .
  • the network device acquires channel state information according to the first information.
  • the network device acquires channel state information according to the first information. After receiving the first information, the network device extracts channel state information from the first message.
  • the network device may extract the first element of the vector V by using a general algorithm, taking the maximum likelihood correlation algorithm as an example, and the network device passes Extract the desired signal, where For the estimation of channel h, Is the estimated value of the lth element of the vector V.
  • V when an element carried in V is used to determine an element of the i-th row j column in the second matrix W 2 on each sub-band in the frequency domain, the vector V can be expressed as V (i, j) .
  • different i, j corresponding amplitudes and phases may have different quantization bits, or different r, l, m, corresponding amplitude and phase may have different quantization bits. For example, for some r, l, m, their corresponding Larger. After IDFT transformation, the value after IDFT can use more bits to quantize the amplitude and phase. And for some r, l, m, the corresponding Smaller. After IDFT transformation, the value after its IDFT can quantize the amplitude and phase using fewer bits.
  • the energy dispersion is greatly reduced, thereby reducing the number of coefficients that need to be reported, and reducing the overhead of uplink resources.
  • an embodiment of the terminal device in the embodiment of the present application includes:
  • c k is used to represent channel state k frequency-domain subband information, and C k is a complex number, C k is molded
  • the sending unit 402 is configured to send the first information to the network device.
  • W k is a matrix of N t rows and R columns
  • W 1 is a matrix of N t rows 2 I columns, where 2I ⁇ R
  • W 2 k is a matrix of 2 I rows and R columns
  • the ith row in the W 2 k Elements of column j Satisfy
  • p i,j is a real number and 0 ⁇ p i,j ⁇ 1,
  • W 2 k contains At least i, j is present In the W 2 k
  • the corresponding vector is V (i, j) .
  • X 1 is a matrix of row I columns
  • X 1 [b 1 b 2 ... b I ], where vector b i is included
  • the column vector of each element, each b i vector is orthogonal to each other, 1 ⁇ i ⁇ I, and I is a positive integer greater than or equal to 1.
  • each matrix In the i-th row and j-th column elements, p i,j are the same.
  • Wk is the precoding matrix of the kth subband of the frequency domain.
  • Wk is the channel frequency domain response of the kth subband of the frequency domain.
  • the first information includes indication information of R and R is a rank of a channel matrix.
  • R is the number of receive antennas of the terminal.
  • the product of the first element V (i,j) (l) of the L elements of each of the vectors V (i,j ) and the first sequence S constitutes Satisfy Said Is the indication information of the vector V.
  • the first element of the L elements in each of the vectors V (i, j) is used Bits to represent, among them,
  • l 1 , l 2 , i 1 , i 2 , j 1 , j 2 there are at least l 1 , l 2 , i 1 , i 2 , j 1 , j 2 such that At least one of the inequalities is satisfied: l 1 ⁇ l 2 , i 1 ⁇ i 2 , j 1 ⁇ j 2 .
  • i 1 , i 2 , j 1 , j 2 there are fewer i 1 , i 2 , j 1 , j 2 , such that The number of elements included is not equal to The number of elements included, where i 1 ⁇ i 2 or j 1 ⁇ j 2 .
  • an embodiment of a network device in this embodiment of the present application includes:
  • the receiving unit 501 is configured to receive first information from the terminal device, where the first information includes parameters q, m 1 , m 2 , . . . , m L , and indication information of the vector V; where q is an integer, and q ⁇ Q ;Q is an integer, and Q>1; 0 ⁇ m l ⁇ N-1,1 ⁇ l ⁇ L; L>1, N, L, l are integers, and N is the number of subbands in the frequency domain bandwidth;
  • the processing unit 502 is configured to acquire channel state information according to the first information.
  • W k is a matrix of N t rows and R columns
  • W 1 is a matrix of N t rows 2 I columns, where 2I ⁇ R
  • W 2 k is a matrix of 2 I rows and R columns
  • the ith row in the W 2 k Elements of column j Satisfy
  • p i,j is a real number and 0 ⁇ p i,j ⁇ 1,
  • W 2 k contains At least i, j is present In the W 2 k
  • the corresponding vector is V (i, j) .
  • the network device further includes:
  • the sending unit 503 is configured to send a reference signal to the terminal device, where the reference signal is used to determine the first information.
  • X 1 is a matrix of row I columns
  • X 1 [b 1 b 2 ... b I ], where vector b i is included
  • the column vector of each element, each b i vector is orthogonal to each other, 1 ⁇ i ⁇ I, and I is a positive integer greater than or equal to 1.
  • each matrix In the i-th row and j-th column elements, p i,j are the same.
  • Wk is the precoding matrix of the kth subband of the frequency domain.
  • Wk is the channel frequency domain response of the kth subband of the frequency domain.
  • the first information includes indication information of R and R is a rank of a channel matrix.
  • R is the number of receive antennas of the terminal.
  • the product of the first element V (i,j) (l) of the L elements of each of the vectors V (i,j ) and the first sequence S constitutes Satisfy Said Is the indication information of the vector V.
  • the first element of the L elements in each of the vectors V (i, j) is used Bits to represent, among them,
  • l 1 , l 2 , i 1 , i 2 , j 1 , j 2 there are at least l 1 , l 2 , i 1 , i 2 , j 1 , j 2 such that At least one of the inequalities is satisfied: l 1 ⁇ l 2 , i 1 ⁇ i 2 , j 1 ⁇ j 2 .
  • i 1 , i 2 , j 1 , j 2 there are fewer i 1 , i 2 , j 1 , j 2 , such that The number of elements included is not equal to The number of elements included, where i 1 ⁇ i 2 or j 1 ⁇ j 2 .
  • the terminal device and the network device in the embodiment of the present application are described in detail from the perspective of the modular functional entity.
  • the terminal device and the network device in the embodiment of the present application are described in detail below.
  • FIG. 6A is a schematic structural diagram of a terminal device according to an embodiment of the present application, and FIG. 6A is referred to. In the case of employing an integrated unit, FIG. 6A shows a possible structural diagram of the terminal device involved in the above embodiment.
  • the terminal device 600 includes a processing unit 602 and a communication unit 603.
  • the processing unit 602 is configured to perform control management on the actions of the terminal device.
  • the processing unit 602 is configured to support the terminal device to perform steps 302 to 303 in FIG. 3, and/or other processes for the techniques described herein.
  • the communication unit 603 is used to support communication between the terminal device and other network entities.
  • the terminal device may further include a storage unit 601 for storing program codes and data of the terminal device.
  • the processing unit 602 can be a processor or a controller, for example, can be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (application-specific). Integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor can also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 603 can be a communication interface, a transceiver, a transceiver circuit, etc., wherein the communication interface is a collective name and can include one or more interfaces, such as a transceiver interface.
  • the storage unit 601 can be a memory.
  • the terminal device involved in the embodiment of the present application may be the terminal device shown in FIG. 6B.
  • the terminal device 610 includes a processor 612, a communication interface 613, and a memory 611.
  • the terminal device 610 may further include a bus 614.
  • the communication interface 613, the processor 612, and the memory 611 may be connected to each other through a bus 614.
  • the bus 614 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA). Bus, etc.
  • the bus 614 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 6B, but it does not mean that there is only one bus or one type of bus.
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • the network device 700 may generate a large difference due to different configurations or performances, and may include one or more central processing units (CPUs) 701. (eg, one or more processors) and memory 709, one or more storage media 708 that store application 707 or data 706 (eg, one or one storage device in Shanghai).
  • the memory 709 and the storage medium 708 may be short-term storage or persistent storage.
  • Programs stored on storage medium 708 may include one or more modules (not shown), each of which may include a series of instruction operations in a network device.
  • the processor 701 can be configured to communicate with the storage medium 708 to perform a series of instruction operations in the storage medium 708 on the network device 700.
  • Network device 700 may also include one or more power sources 702, one or more wired or wireless network interfaces 703, one or more input and output interfaces 704, and/or one or more operating systems 705, such as Windows Serve, Mac OS X, Unix, Linux, FreeBSD, etc. It will be understood by those skilled in the art that the network device structure illustrated in FIG. 7 does not constitute a limitation to the network device, and may include more or less components than those illustrated, or some components may be combined, or different component arrangements.
  • the memory 709 can be used to store software programs and modules, and the processor 701 executes various functional applications and data processing of the network devices by running software programs and modules stored in the memory 709.
  • the memory 709 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of network devices (such as reference signals, etc.).
  • memory 709 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the program of the method of channel feedback provided in the embodiment of the present application and the received data stream are stored in the memory 709, which is called from the memory 709 when needed for use.
  • the processor 701 is a control center of the network device and can be processed according to the set channel feedback method.
  • the processor 701 connects various portions of the entire network device using various interfaces and lines, performs various kinds of network devices by running or executing software programs and/or modules stored in the memory 709, and calling data stored in the memory 709. Function and processing data to achieve feedback on the status information of the channel.
  • FIG. 8 is a block diagram showing a partial structure of a terminal device provided by an embodiment of the present application.
  • the terminal device includes: a radio frequency (RF) circuit 810, a memory 820, an input unit 830, a display unit 840, a sensor 850, an audio circuit 860, a wireless fidelity (WIFI) module 870, and Processor 880 and other components.
  • RF radio frequency
  • WIFI wireless fidelity
  • the processor 880 is a control center of the terminal device.
  • the RF circuit 810 is connected to the processor 880 via a bus, and is responsible for transmitting data to or receiving data from the Internet. It can also be used for receiving and transmitting information or during a call, receiving and transmitting signals, in particular, a network device (base station). After the downlink information is received, it is processed by the processor 880; in addition, the uplink data is sent to the network device.
  • the RF circuit 810 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 810 can also communicate with the network and other devices via wireless communication.
  • the above wireless communication may use any communication standard or protocol, including but not limited to global system of mobile communication (GSM), general packet radio service (GPRS), code division multiple access (code division) Multiple access (CDMA), wideband code division multiple access (WCDMA), long term evolution (LTE), e-mail, short messaging service (SMS), and the like.
  • GSM global system of mobile communication
  • GPRS general packet radio service
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • LTE long term evolution
  • SMS short messaging service
  • the memory 820 can be used to store software programs and modules that execute various functional applications and data processing of the terminal devices by running software programs and modules stored in the memory 820.
  • the memory 820 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as generating a first information function, a frequency domain compression function, etc.), and the like;
  • the data area may store data created according to the use of the mobile terminal (such as first channel state information, precoding matrix, etc.) and the like.
  • the memory 820 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • wired eg coaxial cable, fiber optic, digital subscriber line (DSL)
  • wireless eg infrared, wireless, microwave, etc.
  • the computer readable storage medium can be any available media that can be stored by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .

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Abstract

本申请实施例公开了一种信道反馈的方法及相关设备,用于降低傅里叶变换操作之后的能量弥散,减少需要上报的系数个数,减少上行资源的开销。本申请实施例方法包括:终端设备生成第一信息,所述第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息;其中q为整数,且q<Q;Q为整数,且Q>1;0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为频域带宽中子带的个数;所述向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述终端设备向网络设备发送所述第一信息。

Description

一种信道反馈的方法及相关设备
本申请要求于2017年9月8日提交中国专利局、申请号为201710810156.X、发明名称为“一种信道反馈的方法及相关设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域,尤其涉及一种信道反馈的方法及相关设备。
背景技术
长期演进(long term evolution,LTE)系统广泛采用了多输入多输出(multiple input and multiple output,MIMO)技术。对于小区边缘用户,采用空频块码(space frequency block code,SFBC)传输模式来提高小区边缘信噪比;对于小区中心用户,采用多层并行传输的传输模式来提供较高的数据传输速率。如果基站端可以获得全部或者部分下行信道信息的时候,可以采用预编码(Precoding)技术来提高信号传输质量或者速率。对于时分双工(time division duplexing,TDD)系统,无线信道的上下行具有互异性,可以根据上行信道来估计出下行信道的预编码加权矢量。但是对于频分双工(time division duplexing,FDD)系统,由于上行信道和下行信道的载波频率不同,因此不能利用上行信道来获得下行信道的预编码加权矢量。在LTE系统中,一般采用终端用户反馈预编码矢量的方式来获得预编码加权矩阵。在第五代无线接入系统标准新空口(New Radio access technology,NR)技术中,定义了类型二(Type II)的码本,预编码矩阵的构成为:W=W 1×W 2。W 1是宽带反馈,而W 2中的宽带幅度信息
Figure PCTCN2018102962-appb-000001
也是宽带反馈,而W 2中的子带幅度信息
Figure PCTCN2018102962-appb-000002
和相位信息
Figure PCTCN2018102962-appb-000003
是子带反馈,其中r=1,2;l=1,2;m=1,2;或者m=1,2,3;或者m=1,2,3,4。
Figure PCTCN2018102962-appb-000004
Figure PCTCN2018102962-appb-000005
的量化比特个数决定了UE上报信道状态信息的大小。当W 2中包含的子带系数较多且每个子带系数所需比特个数较多的时候,反馈W 2所需的上行资源往往开销很大。
现有的方案是对W 2中的系数进行频域压缩,其基于的具体原理是:在每个资源块(resource block,RB)上的参数,在相邻的资源块之间是连续的,从整个带宽来看相位是连续的。因此可以对参数在频域上进行压缩,其具体方法包括,将每个RB上的相位组成一个向量。对该向量做傅里叶变换操作,具体的可以是离散傅里叶逆变换(inverse discrete fourier transform,IDFT)或离散傅里叶变换(discrete fourier transform,DFT),然后对傅里叶变换操作之后的结果中数值较大的系数做量化并反馈。由于在频域呈连续的特征,因此通过傅里叶变换操作变换后,数值较大的系数的个数减少,因此所需要反馈量也减少,可以达到减小比特个数的作用。
现有方案中,如图1所示,当采样点不准确的时候,会导致傅里叶变换操作之后的结果有较大的能量弥散,也就是说,在傅里叶变换之后的值中,会存在较多的最大值,并不能很好的达到减少上行反馈开销的目的。
发明内容
本申请实施例提供了一种信道反馈的方法及相关设备,用于降低傅里叶变换操作之后的能量弥散,减少需要上报的系数个数,减少上行资源的开销。
本申请第一方面提供一种信道反馈的方法,包括:终端设备生成第一信息;该第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息;其中q为整数,且q<Q;Q为 整数,且Q>1;0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为频域带宽中子带的个数;所述向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述矩阵F q中的第l行向量满足:
Figure PCTCN2018102962-appb-000006
或者
Figure PCTCN2018102962-appb-000007
所述终端设备向网络设备发送所述第一信息。本申请实施例中,根据反映信道状态信息的向量C进行频域压缩得到向量V,且通过选择合适的q以及m l,l=1,2,…,L,使得傅里叶变换操作之后的能量弥散大幅度减少,从而减少需要上报的系数个数,减少上行资源的开销。
在一种可能的设计中,在本申请实施例第一方面的第一种实现方式中,所述向量C的第k个元素c k包含于第k个频域子带的第二矩阵W 2 k的第i行第j列的元素中,所述第二矩阵W 2 k与第一矩阵W 1满足:W k=W 1×W 2 k;W k为在第k个频域子带上的信道状态信息;其中W k是N t行R列的矩阵,W 1为N t行2I列的矩阵,其中2I≥R,W 2 k为2I行R列的矩阵;所述W 2 k中的第i行第j列的元素
Figure PCTCN2018102962-appb-000008
满足
Figure PCTCN2018102962-appb-000009
其中p i,j为实数且0≤p i,j≤1,
Figure PCTCN2018102962-appb-000010
为复数且
Figure PCTCN2018102962-appb-000011
的模满足
Figure PCTCN2018102962-appb-000012
W 2 k包含
Figure PCTCN2018102962-appb-000013
其中至少存在i,j,使得
Figure PCTCN2018102962-appb-000014
所述W 2 k中的
Figure PCTCN2018102962-appb-000015
所对应的向量为V (i,j)。本申请实施例中,信道状态信息包括宽带信道状态信息和子带信道状态信息,其中子带信道状态信息的上报占用较大的时频资源,而第一信息中通过上报q,m 1,m 2,…,m L,和向量V来构造出信道状态信息中的子带信道状态信息,从而减小了上行时频资源的消耗。
在一种可能的设计中,在本申请实施例第一方面的第二种实现方式中,
Figure PCTCN2018102962-appb-000016
其中X 1
Figure PCTCN2018102962-appb-000017
行I列的矩阵,X 1=[b 1 b 2 … b I],其中,向量b i为包含
Figure PCTCN2018102962-appb-000018
个元素的列向量,各个b i向量之间相互正交,1≤i≤I,I为大于或等于1的正整数。本申请实施例中,对W 1进行了限定,在该结构形式下,矩阵W 2 k中的元素个数通常会小于矩阵W k中的元素个数,可以进一步减小上报W 2 k所需的比特个数。
在一种可能的设计中,在本申请实施例第一方面的第三种实现方式中,每个矩阵
Figure PCTCN2018102962-appb-000019
的第i行第j列元素中p i,j相同。本申请实施例中,对矩阵中的p i,j进行了限定,该限制将
Figure PCTCN2018102962-appb-000020
的系数分为宽带系数和子带系数相乘的形式,其中宽带系数p i,j的上报需要的比特个数较少,而使用本申请的方法来减小上报子带系数所需的比特个数,从而使得W 2 k中的宽带系数和子带系数的上报解耦,有利于减小上报所述向量V所需的比特个数。
在一种可能的设计中,在本申请实施例第一方面的第四种实现方式中,W k为频域第k个子带的预编码矩阵。本申请实施例中,对矩阵中的W k进行了限定,明确了本申请的一种 实现方式。
在一种可能的设计中,在本申请实施例第一方面的第五种实现方式中,W k为频域第k个子带的信道频域响应。本申请实施例中,对矩阵中的W k进行了限定,明确了本申请的一种实现方式。
在一种可能的设计中,在本申请实施例第一方面的第六种实现方式中,所述第一信息包含R的指示信息,R为信道矩阵的秩。本申请实施例中,由于W中的元素个数与R相关,因此需要所述终端设备进一步上报R的值,从而对矩阵中的R进行了限定。
在一种可能的设计中,在本申请实施例第一方面的第七种实现方式中,R为所述终端接收天线的个数。本申请实施例中,W k表示的信道的频域响应,W k中的元素的个数与网络设备的发射天线端口个数和所述终端设备的接收天线端口个数相关,因此对R进行了限定。
在一种可能的设计中,在本申请实施例第一方面的第八种实现方式中,所述每一个向量V (i,j)的L个元素中的第l个元素V (i,j)(l)与第一序列S的乘积构成
Figure PCTCN2018102962-appb-000021
满足
Figure PCTCN2018102962-appb-000022
所述
Figure PCTCN2018102962-appb-000023
为所述向量V的指示信息。本申请实施例,避免了由于对V (i,j)中的每一个元素量化而导致的量化损失。
在一种可能的设计中,在本申请实施例第一方面的第九种实现方式中,所述每一个向量V (i,j)中的L个元素中的第l个元素用
Figure PCTCN2018102962-appb-000024
个比特来表示,其中,
Figure PCTCN2018102962-appb-000025
本申请实施例中,对矩阵中的元素的量化进行了限定,提供了另外一种可能的向量V的上报方式。
在一种可能的设计中,在本申请实施例第一方面的第十种实现方式中,至少存在l 1,l 2,i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000026
其中至少满足其中之一的不等式:l 1≠l 2,i 1≠i 2,j 1≠j 2。本申请实施例中,对矩阵中的元素的量化方式进行了限定,比如当i=i 1,j=j 1的时候,p i,j取较大的幅度值的时候,其所对应的子带系数
Figure PCTCN2018102962-appb-000027
在预编码矩阵中W的构造中具有较大的作用,因此与之对应的V (i,j)中的每一个元素,采用较多的量化比特;而对于i=i 2,j=j 2的时候,p i,j取值较小,其所对应的V (i,j)中的每一个元素,可以采用较少的量化比特,这样做可以进一步减小上行反馈的负载。
在一种可能的设计中,在本申请实施例第一方面的第十一种实现方式中,至少存在x,y,使得
Figure PCTCN2018102962-appb-000028
其中x不等于y。本申请实施例中,对矩阵中的元素的量化方式进行了限定,比如对应一个i,j,V (i,j)中的元素中,绝对值较大的元素可以采用较多的量化比特来表示,而绝对值较小的元素可以采用较少的量化比特来表示,这样做可以进一步减小上行反馈的负载。
在一种可能的设计中,在本申请实施例第一方面的第十二种实现方式中,至少存在i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000029
包含的元素个数不等于
Figure PCTCN2018102962-appb-000030
所包含的元素个数,其中i 1≠i 2或者j 1≠j 2。本申请实施例中,对向量中的元素个数进行了限定,比如,向量
Figure PCTCN2018102962-appb-000031
和向量
Figure PCTCN2018102962-appb-000032
可以包含不同个数的元素,从而使的
Figure PCTCN2018102962-appb-000033
Figure PCTCN2018102962-appb-000034
可以采用不同的负载来指示,从而可以提高上行反馈负载的使用效率。
本申请第二方面提供一种信道反馈的方法,包括:所述网络设备从所述终端设备接收第一信息,所述第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息;其中q为整数,且q<Q;Q为整数,且Q>1;0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为 频域带宽中子带的个数;所述向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述矩阵F q中的第l行向量满足:
Figure PCTCN2018102962-appb-000035
或者
Figure PCTCN2018102962-appb-000036
所述网络设备根据所述第一信息获取信道状态信息。本申请实施例中,网络设备向终端设备发送参考信息,并接收终端设备发送的第一信息,第一信息中包括向量V,向量V根据反映信道状态信息的向量C进行频域压缩得到,且通过选择合适的q以及m l,l=1,2,…,L,使得傅里叶变换操作之后的能量弥散大幅度减少,从而使得网络设备接收到的第一信息中包含的系数个数减少,减少上行资源的开销。
在一种可能的设计中,在本申请实施例第二方面的第一种实现方式中,所述向量C的第k个元素c k包含于第k个频域子带的第二矩阵W 2 k的第i行第j列的元素中,所述第二矩阵W 2 k与第一矩阵W 1满足:W k=W 1×W 2 k;W k为在第k个频域子带上的信道状态信息;其中W k是N t行R列的矩阵,W 1为N t行2I列的矩阵,其中2I≥R,W 2 k为2I行R列的矩阵;所述W 2 k中的第i行第j列的元素
Figure PCTCN2018102962-appb-000037
满足
Figure PCTCN2018102962-appb-000038
其中p i,j为实数且0≤p i,j≤1,
Figure PCTCN2018102962-appb-000039
为复数且
Figure PCTCN2018102962-appb-000040
的模满足
Figure PCTCN2018102962-appb-000041
W 2 k包含
Figure PCTCN2018102962-appb-000042
其中至少存在i,j,使得
Figure PCTCN2018102962-appb-000043
所述W 2 k中的
Figure PCTCN2018102962-appb-000044
所对应的向量为V (i,j)。本申请实施例中,信道状态信息包括宽带信道状态信息和子带信道状态信息,其中子带信道状态信息的上报占用较大的时频资源,而第一信息中通过上报q,m 1,…,m L,和向量V来构造出信道状态信息中的子带信道状态信息,从而减小了上行时频资源的消耗。
在一种可能的设计中,在本申请实施例第二方面的第二种实现方式中,
Figure PCTCN2018102962-appb-000045
其中X 1
Figure PCTCN2018102962-appb-000046
行I列的矩阵,X 1=[b 1 b 2 … b I],其中,向量b i为包含
Figure PCTCN2018102962-appb-000047
个元素的列向量,各个b i向量之间相互正交,1≤i≤I,I为大于或等于1的正整数。本申请实施例中,对W 1进行了限定,在该结构形式下,矩阵W 2 k中的元素个数通常会小于矩阵W k中的元素个数,可以进一步减小上报W 2 k所需的比特个数。
在一种可能的设计中,在本申请实施例第二方面的第三种实现方式中,每个矩阵
Figure PCTCN2018102962-appb-000048
的第i行第j列元素中p i,j相同。本申请实施例中,对矩阵中的p i,j进行了限定,该限制将
Figure PCTCN2018102962-appb-000049
的系数分为宽带系数和子带系数相乘的形式,其中宽带系数p i,j的上报需要的比特个数较少,而使用本申请的方法来减小上报子带系数所需的比特个数,从而使得W 2 k中的宽带系数和子带系数的上报解耦,有利于减小上报所述向量V所需的比特个数。
在一种可能的设计中,在本申请实施例第二方面的第四种实现方式中,W k为频域第k 个子带的预编码矩阵。本申请实施例中,对矩阵中的W k进行了限定,明确了本申请的一种实现方式。
在一种可能的设计中,在本申请实施例第二方面的第五种实现方式中,W k为频域第k个子带的信道频域响应。本申请实施例中,对矩阵中的W k进行了限定,明确了本申请的一种实现方式。
在一种可能的设计中,在本申请实施例第二方面的第六种实现方式中,所述第一信息包含R的指示信息,R为信道矩阵的秩。本申请实施例中,由于W中的元素个数与R相关,因此需要所述终端设备进一步上报R的值,从而对矩阵中的R进行了限定。
在一种可能的设计中,在本申请实施例第二方面的第七种实现方式中,R为所述终端设备接收天线的个数。本申请实施例中,W k表示的信道的频域响应,W k中的元素的个数与网络设备的发射天线端口个数和所述终端设备的接收天线端口个数相关,因此对R进行了限定。
在一种可能的设计中,在本申请实施例第二方面的第八种实现方式中,所述每一个向量V (i,j)的L个元素中的第l个元素V (i,j)(l)与第一序列S的乘积构成
Figure PCTCN2018102962-appb-000050
满足
Figure PCTCN2018102962-appb-000051
所述
Figure PCTCN2018102962-appb-000052
为所述向量V的指示信息。本申请实施例,避免了由于对V (i,j)中的每一个元素量化而导致的量化损失。
在一种可能的设计中,在本申请实施例第二方面的第九种实现方式中,所述每一个向量V (i,j)中的L个元素中的第l个元素用
Figure PCTCN2018102962-appb-000053
个比特来表示,其中,
Figure PCTCN2018102962-appb-000054
本申请实施例中,对矩阵中的元素的量化进行了限定,提供了另外一种可能的向量V的上报方式。
在一种可能的设计中,在本申请实施例第二方面的第十种实现方式中,至少存在l 1,l 2,i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000055
其中至少满足其中之一的不等式:l 1≠l 2,i 1≠i 2,j 1≠j 2。本申请实施例中,对矩阵中的元素的量化方式进行了限定,比如当i=i 1,j=j 1的时候,p i,j取较大的幅度值的时候,其所对应的子带系数
Figure PCTCN2018102962-appb-000056
在预编码矩阵中W的构造中具有较大的作用,因此与之对应的V (i,j)中的每一个元素,采用较多的量化比特;而对于i=i 2,j=j 2的时候,p i,j取值较小,其所对应的V (i,j)中的每一个元素,可以采用较少的量化比特,这样做可以进一步减小上行反馈的负载。
在一种可能的设计中,在本申请实施例第二方面的第十一种实现方式中,至少存在x,y,使得
Figure PCTCN2018102962-appb-000057
其中x不等于y。本申请实施例中,对矩阵中的元素的量化方式进行了限定,比如对应一个i,j,V (i,j)中的元素中,绝对值较大的元素可以采用较多的量化比特来表示,而绝对值较小的元素可以采用较少的量化比特来表示,这样做可以进一步减小上行反馈的负载。
在一种可能的设计中,在本申请实施例第二方面的第十二种实现方式中,至少存在i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000058
包含的元素个数不等于
Figure PCTCN2018102962-appb-000059
所包含的元素个数,其中i 1≠i 2或者j 1≠j 2。本申请实施例中,对向量中的元素个数进行了限定,比如,向量
Figure PCTCN2018102962-appb-000060
和向量
Figure PCTCN2018102962-appb-000061
可以包含不同个数的元素,从而使的
Figure PCTCN2018102962-appb-000062
Figure PCTCN2018102962-appb-000063
可以采用不同的负载来指示,从而可以提高上行反馈负载的使用效率。
本申请第三方面提供一种终端设备,包括:处理单元,用于生成第一信息,所述第一 信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息;其中q为整数,且q<Q;Q为整数,且Q>1;0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为频域带宽中子带的个数;所述向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述矩阵F q中的第l行向量满足:
Figure PCTCN2018102962-appb-000064
或者
Figure PCTCN2018102962-appb-000065
发送单元,用于向网络设备发送所述第一信息。本申请实施例中,根据反映信道状态信息的向量C进行频域压缩得到向量V,且通过选择合适的q以及m l,l=1,2,…,L,使得傅里叶变换操作之后的能量弥散大幅度减少,从而减少需要上报的系数个数,减少上行资源的开销。
在一种可能的设计中,在本申请实施例三方面的第一种实现方式中,所述向量C的第k个元素c k包含于第k个频域子带的第二矩阵W 2 k的第i行第j列的元素中,所述第二矩阵W 2 k与第一矩阵W 1满足:W k=W 1×W 2 k;W k为在第k个频域子带上的信道状态信息;其中W k是N t行R列的矩阵,W 1为N t行2I列的矩阵,其中2I≥R,W 2 k为2I行R列的矩阵;所述W 2 k中的第i行第j列的元素
Figure PCTCN2018102962-appb-000066
满足
Figure PCTCN2018102962-appb-000067
其中p i,j为实数且0≤p i,j≤1,
Figure PCTCN2018102962-appb-000068
为复数且
Figure PCTCN2018102962-appb-000069
的模满足
Figure PCTCN2018102962-appb-000070
W 2 k包含
Figure PCTCN2018102962-appb-000071
其中至少存在i,j,使得
Figure PCTCN2018102962-appb-000072
所述W 2 k中的
Figure PCTCN2018102962-appb-000073
所对应的向量为V (i,j)。本申请实施例中,信道状态信息包括宽带信道状态信息和子带信道状态信息,其中子带信道状态信息的上报占用较大的时频资源,而第一信息中通过上报q,m 1,…,m L,和向量V来构造出信道状态信息中的子带信道状态信息,从而减小了上行时频资源的消耗。
在一种可能的设计中,在本申请实施例第三方面的第二种实现方式中,
Figure PCTCN2018102962-appb-000074
其中X 1
Figure PCTCN2018102962-appb-000075
行I列的矩阵,X 1=[b 1 b 2 … b I],其中,向量b i为包含
Figure PCTCN2018102962-appb-000076
个元素的列向量,各个b i向量之间相互正交,1≤i≤I,I为大于或等于1的正整数。本申请实施例中,对W 1进行了限定,在该结构形式下,矩阵W 2 k中的元素个数通常会小于矩阵W k中的元素个数,可以进一步减小上报W 2 k所需的比特个数。
在一种可能的设计中,在本申请实施例第三方面的第三种实现方式中,每个矩阵
Figure PCTCN2018102962-appb-000077
的第i行第j列元素中p i,j相同。本申请实施例中,对矩阵中的p i,j进行了限定,该限制将
Figure PCTCN2018102962-appb-000078
的系数分为宽带系数和子带系数相乘的形式,其中宽带系数p i,j的上报需要的比特个数较少,而使用本申请的方法来减小上报子带系数所需的比特个数,从而使得W 2 k中的宽带系数和子带系数的上报解耦,有利于减小上报所述向量V所需的比特个数。
在一种可能的设计中,在本申请实施例第三方面的第四种实现方式中,W k为频域第k 个子带的预编码矩阵。本申请实施例中,对矩阵中的W k进行了限定,明确了本申请的一种实现方式,使本申请更具有逻辑性。
在一种可能的设计中,在本申请实施例第三方面的第五种实现方式中,W k为频域第k个子带的信道频域响应。本申请实施例中,对矩阵中的W k进行了限定,明确了本申请的一种实现方式。
在一种可能的设计中,在本申请实施例第三方面的第六种实现方式中,所述第一信息包含R的指示信息,R为信道矩阵的秩。本申请实施例中,由于W中的元素个数与R相关,因此需要所述终端设备进一步上报R的值,从而对矩阵中的R进行了限定。
在一种可能的设计中,在本申请实施例第三方面的第七种实现方式中,R为所述终端接收天线的个数。本申请实施例中,W k表示的信道的频域响应,W k中的元素的个数与网络设备的发射天线端口个数和所述终端设备的接收天线端口个数相关,因此对R进行了限定。
在一种可能的设计中,在本申请实施例第三方面的第八种实现方式中,所述每一个向量V (i,j)的L个元素中的第l个元素V (i,j)(l)与第一序列S的乘积构成
Figure PCTCN2018102962-appb-000079
满足
Figure PCTCN2018102962-appb-000080
所述
Figure PCTCN2018102962-appb-000081
为所述向量V的指示信息。本申请实施例中,提供了一种处理向量V (i,j)的方式,即向量V (i,j)中的每一个元素被调制到一个序列上,并将该调制序列发送给网络设备。避免了由于对V (i,j)中的每一个元素量化而导致的量化损失。
在一种可能的设计中,在本申请实施例第三方面的第九种实现方式中,所述每一个向量V (i,j)中的L个元素中的第l个元素用
Figure PCTCN2018102962-appb-000082
个比特来表示,其中,
Figure PCTCN2018102962-appb-000083
本申请实施例中,对矩阵中的元素的量化进行了限定,提供了另外一种可能的向量V的上报方式。
在一种可能的设计中,在本申请实施例第三方面的第十种实现方式中,至少存在l 1,l 2,i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000084
其中至少满足其中之一的不等式:l 1≠l 2,i 1≠i 2,j 1≠j 2。本申请实施例中,对矩阵中的元素的量化方式进行了限定,比如当i=i 1,j=j 1的时候,p i,j取较大的幅度值的时候,其所对应的子带系数
Figure PCTCN2018102962-appb-000085
在预编码矩阵中W的构造中具有较大的作用,因此与之对应的V (i,j)中的每一个元素,采用较多的量化比特;而对于i=i 2,j=j 2的时候,p i,j取值较小,其所对应的V (i,j)中的每一个元素,可以采用较少的量化比特,这样做可以进一步减小上行反馈的负载。
在一种可能的设计中,在本申请实施例第三方面的第十一种实现方式中,至少存在x,y,使得
Figure PCTCN2018102962-appb-000086
其中x不等于y。本申请实施例中,对矩阵中的元素的量化方式进行了限定,比如对应一个i,j,V (i,j)中的元素中,绝对值较大的元素可以采用较多的量化比特来表示,而绝对值较小的元素可以采用较少的量化比特来表示,这样做可以进一步减小上行反馈的负载。
在一种可能的设计中,在本申请实施例第三方面的第十二种实现方式中,至少存在i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000087
包含的元素个数不等于
Figure PCTCN2018102962-appb-000088
所包含的元素个数,其中i 1≠i 2或者j 1≠j 2。本申请实施例中,对向量中的元素个数进行了限定,比如,向量
Figure PCTCN2018102962-appb-000089
和向量
Figure PCTCN2018102962-appb-000090
可以包含不同个数的元素,从而使的
Figure PCTCN2018102962-appb-000091
Figure PCTCN2018102962-appb-000092
可以采用不同的负载来指示,从而可以 提高上行反馈负载的使用效率。
本申请第四方面提供一种网络设备,包括:接收单元,用于从终端设备接收第一信息,所述第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息;其中q为整数,且q<Q;Q为整数,且Q>1;0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为频域带宽中子带的个数;所述向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述矩阵F q中的第l行向量满足:
Figure PCTCN2018102962-appb-000093
或者
Figure PCTCN2018102962-appb-000094
处理单元,用于根据所述第一信息获取信道状态信息。本申请实施例中,网络设备向终端设备发送参考信息,并接收终端设备发送的第一信息,第一信息中包括向量V,向量V根据反映信道状态信息的向量C进行频域压缩得到,且通过选择合适的q以及m l,l=1,2,…,L,使得傅里叶变换操作之后的能量弥散大幅度减少,从而使得网络设备接收到的第一信息中包含的系数个数减少,减少上行资源的开销。
在一种可能的设计中,在本申请实施例第四方面的第一种实现方式中,所述向量C的第k个元素c k包含于第k个频域子带的第二矩阵W 2 k的第i行第j列的元素中,所述第二矩阵W 2 k与第一矩阵W 1满足:W k=W 1×W 2 k;W k为在第k个频域子带上的信道状态信息;其中W k是N t行R列的矩阵,W 1为N t行2I列的矩阵,其中2I≥R,W 2 k为2I行R列的矩阵;所述W 2 k中的第i行第j列的元素
Figure PCTCN2018102962-appb-000095
满足
Figure PCTCN2018102962-appb-000096
其中p i,j为实数且0≤p i,j≤1,
Figure PCTCN2018102962-appb-000097
为复数且
Figure PCTCN2018102962-appb-000098
的模满足
Figure PCTCN2018102962-appb-000099
W 2 k包含
Figure PCTCN2018102962-appb-000100
其中至少存在i,j,使得
Figure PCTCN2018102962-appb-000101
所述W 2 k中的
Figure PCTCN2018102962-appb-000102
所对应的向量为V (i,j)。本申请实施例中,信道状态信息包括宽带信道状态信息和子带信道状态信息,其中子带信道状态信息的上报占用较大的时频资源,而第一信息中通过上报q,m 1,…,m L,和向量V来构造出信道状态信息中的子带信道状态信息,从而减小了上行时频资源的消耗。
在一种可能的设计中,在本申请实施例第四方面的第二种实现方式中,
Figure PCTCN2018102962-appb-000103
其中X 1
Figure PCTCN2018102962-appb-000104
行I列的矩阵,X 1=[b 1 b 2 … b I],其中,向量b i为包含
Figure PCTCN2018102962-appb-000105
个元素的列向量,各个b i向量之间相互正交,1≤i≤I,I为大于或等于1的正整数。本申请实施例中,对W 1进行了限定,在该结构形式下,矩阵W 2 k中的元素个数通常会小于矩阵W k中的元素个数,可以进一步减小上报W 2 k所需的比特个数。
在一种可能的设计中,在本申请实施例第四方面的第三种实现方式中,每个矩阵
Figure PCTCN2018102962-appb-000106
的第i行第j列元素中p i,j相同。本申请实施例中,对矩阵中的p i,j进行了限定,该限制将
Figure PCTCN2018102962-appb-000107
的系数分为宽带系数和子带系数相乘的形式,其中宽带系数p i,j的上报需要的比特个数较少,而使用本申请的方法来减小上报子带系数所需的比特个数,从而使得W 2 k中的宽带系数和子带系数的上报解耦,有利于减小上报所述向量V所需的比特个数。
在一种可能的设计中,在本申请实施例第四方面的第四种实现方式中,W k为频域第k个子带的预编码矩阵。本申请实施例中,对矩阵中的W k进行了限定,明确了本申请的一种实现方式。
在一种可能的设计中,在本申请实施例第四方面的第五种实现方式中,W k为频域第k个子带的信道频域响应。本申请实施例中,对矩阵中的W k进行了限定,明确了本申请的一种实现方式。
在一种可能的设计中,在本申请实施例第四方面的第六种实现方式中,所述第一信息包含R的指示信息,R为信道矩阵的秩。本申请实施例中,由于W中的元素个数与R相关,因此需要所述终端设备进一步上报R的值,从而对矩阵中的R进行了限定。
在一种可能的设计中,在本申请实施例第四方面的第七种实现方式中,R为所述终端设备接收天线的个数。本申请实施例中,W k表示的信道的频域响应,W k中的元素的个数与网络设备的发射天线端口个数和所述终端设备的接收天线端口个数相关,因此对R进行了限定。
在一种可能的设计中,在本申请实施例第四方面的第八种实现方式中,所述每一个向量V (i,j)的L个元素中的第l个元素V (i,j)(l)与第一序列S的乘积构成
Figure PCTCN2018102962-appb-000108
满足
Figure PCTCN2018102962-appb-000109
所述
Figure PCTCN2018102962-appb-000110
为所述向量V的指示信息。本申请实施例,避免了由于对V (i,j)中的每一个元素量化而导致的量化损失。
在一种可能的设计中,在本申请实施例第四方面的第九种实现方式中,所述每一个向量V (i,j)中的L个元素中的第l个元素用
Figure PCTCN2018102962-appb-000111
个比特来表示,其中,
Figure PCTCN2018102962-appb-000112
本申请实施例中,对矩阵中的元素的量化进行了限定,提供了另外一种可能的向量V的上报方式。
在一种可能的设计中,在本申请实施例第四方面的第十种实现方式中,至少存在l 1,l 2,i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000113
其中至少满足其中之一的不等式:l 1≠l 2,i 1≠i 2,j 1≠j 2。本申请实施例中,对矩阵中的元素的量化方式进行了限定,比如当i=i 1,j=j 1的时候,p i,j取较大的幅度值的时候,其所对应的子带系数
Figure PCTCN2018102962-appb-000114
在预编码矩阵中W的构造中具有较大的作用,因此与之对应的V (i,j)中的每一个元素,采用较多的量化比特;而对于i=i 2,j=j 2的时候,p i,j取值较小,其所对应的V (i,j)中的每一个元素,可以采用较少的量化比特,这样做可以进一步减小上行反馈的负载。
在一种可能的设计中,在本申请实施例第四方面的第十一种实现方式中,至少存在x,y,使得
Figure PCTCN2018102962-appb-000115
其中x不等于y。本申请实施例中,对矩阵中的元素的量化方式进行了限定,比如对应一个i,j,V (i,j)中的元素中,绝对值较大的元素可以采用较多的量化比特来表示,而绝对值较小的元素可以采用较少的量化比特来表示,这样做可以进一步减小上行反馈的负载。
在一种可能的设计中,在本申请实施例第四方面的第十二种实现方式中,至少存在i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000116
包含的元素个数不等于
Figure PCTCN2018102962-appb-000117
所包含的元素个数,其中i 1≠i 2或 者j 1≠j 2。本申请实施例中,对向量中的元素个数进行了限定,比如,向量
Figure PCTCN2018102962-appb-000118
和向量
Figure PCTCN2018102962-appb-000119
可以包含不同个数的元素,从而使的
Figure PCTCN2018102962-appb-000120
Figure PCTCN2018102962-appb-000121
可以采用不同的负载来指示,从而可以提高上行反馈负载的使用效率。
本申请的第五方面提供了一种计算机可读存储介质,所述计算机可读存储介质中存储有指令,当其在计算机上运行时,使得计算机执行上述各方面所述的方法。
本申请的第六方面提供了一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述各方面所述的方法。
本申请的第七方面提供了一种芯片,所述芯片包括输入接口、输出接口、至少一个处理器和至少一个存储器,所述至少一个存储器用于存储代码,所述至少一个处理器用于执行所述存储器中的代码,当所述代码被执行时,所述芯片用于执行以上方面所述的方法。
本申请的第八方面提供了一种芯片系统,该芯片系统包括处理器,用于支持终端设备和网络设备实现上述方面中所涉及的功能,例如,发送或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中,所述芯片系统还包括存储器,所述存储器,用于保存终端设备和网络设备必要的程序指令和数据。该芯片系统,可以由芯片构成,也可以包括芯片和其他分立器件。
本申请第九方面还提供了一种通信系统,包括以上方面所述的终端设备和网络设备,所述通信系统中终端设备和网络设备用于执行以上方面所述的方法。
附图说明
图1为本现有方案中向量进行傅里叶变化后的能量弥散的示意图;
图2为本申请实施例应用的网络架构的示意图;
图3为本申请实施例提供的信道反馈的方法的一个实施例示意图;
图4为本申请实施例中终端设备的一个实施例示意图;
图5为本申请实施例中网络设备的一个实施例示意图;
图6A为本申请实施例中终端设备的另一个实施例示意图;
图6B为本申请实施例中终端设备的另一个实施例示意图;
图7为本申请实施例中网络设备的另一个实施例示意图;
图8为本申请实施例中终端设备的另一个实施例示意图。
具体实施方式
本申请实施例提供了一种信道反馈的方法及相关设备,用于降低傅里叶变换操作之后的能量弥散,减少需要上报的系数个数,减少上行资源的开销。
为了使本技术领域的人员更好地理解本申请方案,下面将结合本申请实施例中的附图,对本申请实施例进行描述。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外,术语“包括”或“具有”及其任何变形,意 图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本申请实施例可应用于如图2所示的网络架构,在该网络架构中,网络设备(基站)与终端设备(手机)之间进行信号传输,本申请中的发送参考信号的设备称为网络设备。本申请中的实施例以网络设备向终端设备发送参考信号为例进行说明,当网络设备通过下行信道将参考信号发送至终端设备时,终端设备根据参考信号确定需要上报的第一信息,第一信息用于指示下行信道的状态信息,并通过上行信道将第一信息发送给网络设备。
为便于理解,下面对本申请实施例的具体流程进行描述,请参阅图3,本申请实施例中信道反馈的方法的一个实施例包括:
301、网络设备向终端设备发送参考信号。
网络设备向终端设备发送参考信号,所述参考信号用于确定第一信息,所述第一信息用于指示信道状态信息。
举例说明,网络设备将预先设定的参考信号发送至终端设备,参考信号为信道状态信息参考信号(channel state information reference signal,CSI-RS),该CSI-RS用于测量第一信道状态信息,第一信道为下行信道。
需要说明的是,网络设备可以根据实际情况选择不同的方式发射参考信号。在每个CSI-RS子帧中的任意数量的符号周期内发射CSI-RS。CSI-RS可以按照不同的周期进行发送,例如,每隔2或10个子帧发射CSI-RS,还可以相隔其他数量的子帧,具体此处不做限定。
302、终端设备生成第一信息。
终端设备生成第一信息信息,该第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息。该向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述矩阵F q中的第l行向量满足:
Figure PCTCN2018102962-appb-000122
或者
Figure PCTCN2018102962-appb-000123
其中q为整数,且q<Q;Q为整数,且Q>1;0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为频域带宽中子带的个数。
在一种可行的实施方式中,所述向量C的第k个元素c k包含于第k个频域子带的第二矩阵W 2 k的第i行第j列的元素中,所述第二矩阵W 2 k与第一矩阵W 1满足:W k=W 1×W 2 k;W k为在第k个频域子带上的信道状态信息;
其中W k是N t行R列的矩阵,W 1为N t行2I列的矩阵,其中2I≥R,W 2 k为2I行R列 的矩阵;所述W 2 k中的第i行第j列的元素
Figure PCTCN2018102962-appb-000124
满足
Figure PCTCN2018102962-appb-000125
其中p i,j为实数且0≤p i,j≤1,
Figure PCTCN2018102962-appb-000126
为复数且
Figure PCTCN2018102962-appb-000127
的模满足
Figure PCTCN2018102962-appb-000128
W 2 k包含
Figure PCTCN2018102962-appb-000129
其中至少存在i,j,使得
Figure PCTCN2018102962-appb-000130
所述W 2 k中的
Figure PCTCN2018102962-appb-000131
所对应的向量为V (i,j)
举例说明,向量C的第k个元素c k为第二矩阵W 2 k的第i行第j列的元素中的一个乘积因子,W 2 k为第k个频域子带的第二矩阵,所述第二矩阵W 2 k与第一矩阵W 1满足:W k=W 1×W 2 k;W k为在第k个频域子带上的信道状态信息;所述W 2 k中的第i行第j列的元素
Figure PCTCN2018102962-appb-000132
满足
Figure PCTCN2018102962-appb-000133
其中p i,j为实数且0≤p i,j≤1,
Figure PCTCN2018102962-appb-000134
为复数且
Figure PCTCN2018102962-appb-000135
的模满足
Figure PCTCN2018102962-appb-000136
在一个示例中,所述W 1具有如下形式:
Figure PCTCN2018102962-appb-000137
其中X 1
Figure PCTCN2018102962-appb-000138
行I列的矩阵,X 1=[b 1 b 2 … b I],其中,向量b i为包含
Figure PCTCN2018102962-appb-000139
个元素的列向量,各个b i向量之间相互正交,1≤i≤I,I为大于或等于1的正整数。本示例中,对W 1进行了限定,在该结构形式下,矩阵W 2 k中的元素个数通常会小于矩阵W k中的元素个数,可以进一步减小上报W 2 k所需的比特个数。
在一个示例中,每个矩阵
Figure PCTCN2018102962-appb-000140
的第i行第j列元素中p i,j相同。本示例中,对矩阵中的p i,j进行了限定,该限制将
Figure PCTCN2018102962-appb-000141
的系数分为宽带系数和子带系数相乘的形式,其中宽带系数p i,j的上报需要的比特个数较少,而使用本申请的方法来减小上报子带系数所需的比特个数,从而使得W 2 k中的宽带系数和子带系数的上报解耦,有利于减小上报所述向量V所需的比特个数。
在一个示例中,W k为频域第k个子带的预编码矩阵。
在一个示例中,所述第一信息包含R的指示信息,R为信道矩阵的秩。本示例中,由于W中的元素个数与R相关,因此需要所述终端设备进一步上报R的值,从而对矩阵中的R进行了限定。
需要说明的是,所述W 2 k还可以是另一种形式,W 2 k中第i行第j列元素可以表示为:
Figure PCTCN2018102962-appb-000142
其中
Figure PCTCN2018102962-appb-000143
表示宽带的幅度信息,
Figure PCTCN2018102962-appb-000144
表示子带的幅度信息,
Figure PCTCN2018102962-appb-000145
表示相位信息。具体的,
Figure PCTCN2018102962-appb-000146
Figure PCTCN2018102962-appb-000147
Figure PCTCN2018102962-appb-000148
其中,r表示天线的极化方向维度的索引,l表示数据的层的序号,m表示W 1中对角块矩阵X 1的列向量的序号。
举例说明,当在RANK1的时候,天线的极化方向维度为0和1时,所述W 2 k具有如下形式:
Figure PCTCN2018102962-appb-000149
当在RANK2的时候,天线的极化方向维度为0和1时,所述W 2 k具有如下形式:
Figure PCTCN2018102962-appb-000150
在一个示例中,W k为频域第k个子带的信道频域响应。
在该示例中,j=l,i=2r+m,
Figure PCTCN2018102962-appb-000151
与权要中的p i,j相对应,
Figure PCTCN2018102962-appb-000152
与权要中的
Figure PCTCN2018102962-appb-000153
相对应。
在一个示例中,R为所述终端接收天线的个数。
可以理解的是,终端设备对所述向量C进行频域压缩,有多种实现方式。例如,对向量C进行频域压缩的过程中,采用过采样的离散傅里叶逆变换(inverse discrete fourier transform,IDFT)或离散傅里叶变换(discrete fourier transform,DFT)的方法。以离散傅里叶反变换为例,假设过采样因子为Q,那么其具体实施过程包括:取q=0,1,…,Q-1,构造DFT矩阵F′ q,其中矩阵F′ q的第l行向量满足:
Figure PCTCN2018102962-appb-000154
将矩阵F′ q与向量C相乘,得到向量U q,即U q=F' qC。取向量U q中L个能量或者幅度较大的元素,记为V q=[U q(m 1) U q(m 2) … U q(m L)] T,其中U q(m l)表示向量U q中第m l个元素。所述终端设备遍历所有的q的取值,获得Q个向量V 0,V 1,…,V Q-1.在所述Q个向量中选择一个向量V q,以及确定该向量V q所对应的因子q,m 1,m 2,…,m L-1.其中选择向量V q的原则包括但不限于所述V q中L个元素能量和最大。
又例如,在向量C的末尾补足(N(Q-1))个0,构成C',那么C'为(NQ×1)的列向量。对C'做NQ点的IDFT,C″=IDFT(C′)。在C″中以第q+1个元素为起点,间隔为Q取N个元素,构成C (q)',即C (q)'=C″(q+1:Q:NQ)。采用上述相同的原则在C (q)'中确定V q以及确定该向量V q所对应的因子q,m 1,m 2,…,m L-1。还可以是其他实现方式,具体此处不做限定。 可以理解的是,对于q取值不同的V q而言,当q,m 1,m 2,…,m L确定时,向量V q也确定,V q即为所述向量V。
303、终端设备对第一信息进行上报处理。
终端设备在生成第一信息,该第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息。
具体的,终端设备针对向量V可以有两种不同的上报方式:量化上报处理和模拟上报处理。例如,当终端设备对向量V进行模拟上报处理时,终端设备将向量V的L个元素中的第l个元素V(l)与第一序列S相乘,D(l)=V(l)×S,第一序列S分别为s 1,s 2,…s L,所述D(l)为所述向量V中第l个元素的指示信息。当终端设备对向量V进行量化上报处理时,将向量V中的幅度和相位分别量化。
304、终端设备向网络设备发送第一信息。
终端设备向网络设备发送第一信息,该第一信息包括因子q和构成矩阵F q的L个行向量的索引m l,以及所述向量V的指示信息。上报的第一信息包括因子q和构成矩阵F q的L个行向量的索引m 1,m 2,…,m L,以及所述向量V的指示信息,指示信息用于确定向量V中的L个元素。
在一种实现方式中,向量C中的第k个元素来自于矩阵
Figure PCTCN2018102962-appb-000155
其中矩阵
Figure PCTCN2018102962-appb-000156
为2I行R列的矩阵,第i行第j列的元素为
Figure PCTCN2018102962-appb-000157
其中的一种实施方式是向量C中的第k个元素可以取自于矩阵
Figure PCTCN2018102962-appb-000158
中的任意元素,比如
Figure PCTCN2018102962-appb-000159
Figure PCTCN2018102962-appb-000160
构成的向量可以记为C (i,j),与向量C (i,j)相对应的向量V记做V (i,j)
可以理解的是,对于不同的i,j,向量C经过IDFT之后,所取的最大值的样点个数可以不同。
需要注意的是,在NR中,矩阵
Figure PCTCN2018102962-appb-000161
中的一元素可以表示成
Figure PCTCN2018102962-appb-000162
在一个示例中,所述每一个向量V (i,j)中的L个元素中的每一个元素用
Figure PCTCN2018102962-appb-000163
个比特来表示,
Figure PCTCN2018102962-appb-000164
在一个示例中,至少存在l 1,l 2,i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000165
其中至少满足其中之一的不等式:l 1≠l 2,i 1≠i 2,j 1≠j 2。本示例中,对矩阵中的元素的量化方式进行了限定,比如当i=i 1,j=j 1的时候,p i,j取较大的幅度值的时候,其所对应的子带系数
Figure PCTCN2018102962-appb-000166
在预编码矩阵中W的构造中具有较大的作用,因此与之对应的V (i,j)中的每一个元素,采用较多的量化比特;而对于i=i 2,j=j 2的时候,p i,j取值较小,其所对应的V (i,j)中的每一个元素,可以采用较少的量化比特,这样做可以进一步减小上行反馈的负载。
在一个示例中,至少存在x,y,使得
Figure PCTCN2018102962-appb-000167
其中x不等于y。本示例中,对矩阵中的元素的量化方式进行了限定,比如对应一个i,j,V (i,j)中的元素中,绝对值较大的元素可以采用较多的量化比特来表示,而绝对值较小的元素可以采用较少的量化比特来表示,这样做可以进一步减小上行反馈的负载。
在一个示例中,至少存在i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000168
包含的元素个数不等于
Figure PCTCN2018102962-appb-000169
所包含的元素个数,其中i 1≠i 2或者j 1≠j 2。本示例中,对向量中的元素个数进行了限定,比如,向量
Figure PCTCN2018102962-appb-000170
和向量
Figure PCTCN2018102962-appb-000171
可以包含不同个数的元素,从而使的
Figure PCTCN2018102962-appb-000172
Figure PCTCN2018102962-appb-000173
可以采用不 同的负载来指示,从而可以提高上行反馈负载的使用效率。
需要说明的是,终端设备还可以直接向网络设备反馈终端设备估计出来的信道H,或者,信道H的相关矩阵R。例如,信道H可以表示为H=W 1×W 2,其中W 1和W 2的表示形式和Type II码本类似。H为N t×N r的矩阵,W 1为N t×2I的矩阵,W 2为2I×N r的矩阵。而信道相关矩阵R可以表示为R=(W 1×W 2)×(W 1×W 2) H
305、网络设备根据第一信息获取信道状态信息。
网络设备根据第一信息获取信道状态信息。网络设备在接收到第一信息后,从第一消息中提取出信道状态信息。
举例说明,当终端设备采用模拟上报的方式将向量V上报,其中对于V的第l个元素的接收信号为:y=h×V(l)×S l+n,其中1≤l≤L,其中S l是网络设备已知的信号,无线信道响应h可以通过信道估计获得。所述网络设备可以通过一些通用算法提取出向量V的第l个元素,以最大似然相关算法为例,网络设备通过
Figure PCTCN2018102962-appb-000174
提取出需要的信号,其中
Figure PCTCN2018102962-appb-000175
为信道h的估计,
Figure PCTCN2018102962-appb-000176
为向量V的第l个元素的估计值。
可以理解的是,当V中承载的元素用于确定在频域每个子带上第二矩阵W 2中的第i行j列的元素时,向量V可以表示为V (i,j)
需要说明的是,不同的i,j对应的幅度和相位可以有不同的量化比特,或者,不同的r,l,m,对应的幅度和相位可以有不同的量化比特。例如对于有些r,l,m,其对应的
Figure PCTCN2018102962-appb-000177
较大。通过IDFT变换后,其IDFT之后的值可以使用较多的比特来量化幅度和相位。而对于有些r,l,m,其对应的
Figure PCTCN2018102962-appb-000178
较小。通过IDFT变换后,其IDFT之后的值可以使用较少的比特来量化幅度和相位。
可以理解的是,即使同一个向量V中不同的M个取值,也可以采用不同的量化比特,比如M个取值中较大的值,采用较多的比特来量化幅度和相位,而M个取值中较小的值,可以采用较少的比特来量化幅度和相位。
本申请实施例提供中,根据反映信道状态信息的向量C进行频域压缩得到向量V,且通过选择合适的q以及m l,l=1,2,…,L,使得傅里叶变换操作之后的能量弥散大幅度减少,从而减少需要上报的系数个数,减少上行资源的开销。
上面对本申请实施例中信道反馈的方法进行了描述,下面对本申请实施例中的网络设备和终端设备进行描述,请参阅图4,本申请实施例中终端设备的一个实施例包括:
处理单元401,用于生成第一信息,所述第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息;其中q为整数,且q<Q;Q为整数,且Q>1;0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为频域带宽中子带的个数;所述向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述矩阵F q中的第l行向量满足:
Figure PCTCN2018102962-appb-000179
或者
Figure PCTCN2018102962-appb-000180
发送单元402,用于向网络设备发送所述第一信息。
在一个示例中,所述向量C的第k个元素c k包含于第k个频域子带的第二矩阵W 2 k的第i行第j列的元素中,所述第二矩阵W 2 k与第一矩阵W 1满足:W k=W 1×W 2 k;W k为在第k个频域子带上的信道状态信息;
其中W k是N t行R列的矩阵,W 1为N t行2I列的矩阵,其中2I≥R,W 2 k为2I行R列的矩阵;所述W 2 k中的第i行第j列的元素
Figure PCTCN2018102962-appb-000181
满足
Figure PCTCN2018102962-appb-000182
其中p i,j为实数且0≤p i,j≤1,
Figure PCTCN2018102962-appb-000183
为复数且
Figure PCTCN2018102962-appb-000184
的模满足
Figure PCTCN2018102962-appb-000185
W 2 k包含
Figure PCTCN2018102962-appb-000186
其中至少存在i,j,使得
Figure PCTCN2018102962-appb-000187
所述W 2 k中的
Figure PCTCN2018102962-appb-000188
所对应的向量为V (i,j)
在一个示例中,
Figure PCTCN2018102962-appb-000189
其中X 1
Figure PCTCN2018102962-appb-000190
行I列的矩阵,X 1=[b 1 b 2 … b I],其中,向量b i为包含
Figure PCTCN2018102962-appb-000191
个元素的列向量,各个b i向量之间相互正交,1≤i≤I,I为大于或等于1的正整数。
在一个示例中,每个矩阵
Figure PCTCN2018102962-appb-000192
的第i行第j列元素中p i,j相同。
在一个示例中,W k为频域第k个子带的预编码矩阵。
在一个示例中,W k为频域第k个子带的信道频域响应。
在一个示例中,所述第一信息包含R的指示信息,R为信道矩阵的秩。
在一个示例中,R为所述终端接收天线的个数。
在一个示例中,所述每一个向量V (i,j)的L个元素中的第l个元素V (i,j)(l)与第一序列S的乘积构成
Figure PCTCN2018102962-appb-000193
满足
Figure PCTCN2018102962-appb-000194
所述
Figure PCTCN2018102962-appb-000195
为所述向量V的指示信息。
在一个示例中,所述每一个向量V (i,j)中的L个元素中的第l个元素用
Figure PCTCN2018102962-appb-000196
个比特来表示,其中,
Figure PCTCN2018102962-appb-000197
在一个示例中,至少存在l 1,l 2,i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000198
其中至少满足其中之一的不等式:l 1≠l 2,i 1≠i 2,j 1≠j 2
在一个示例中,至少存在x,y,使得
Figure PCTCN2018102962-appb-000199
其中x不等于y。
在一个示例中,少存在i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000200
包含的元素个数不等于
Figure PCTCN2018102962-appb-000201
所包含的元素个数,其中i 1≠i 2或者j 1≠j 2
请参阅图5,本申请实施例中网络设备的一个实施例包括:
接收单元501,用于从终端设备接收第一信息,所述第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息;其中q为整数,且q<Q;Q为整数,且Q>1; 0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为频域带宽中子带的个数;所述向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述矩阵F q中的第l行向量满足:
Figure PCTCN2018102962-appb-000202
或者
Figure PCTCN2018102962-appb-000203
处理单元502,用于根据所述第一信息获取信道状态信息。
在一个示例中,所述向量C的第k个元素c k包含于第k个频域子带的第二矩阵W 2 k的第i行第j列的元素中,所述第二矩阵W 2 k与第一矩阵W 1满足:W k=W 1×W 2 k;W k为在第k个频域子带上的信道状态信息;
其中W k是N t行R列的矩阵,W 1为N t行2I列的矩阵,其中2I≥R,W 2 k为2I行R列的矩阵;所述W 2 k中的第i行第j列的元素
Figure PCTCN2018102962-appb-000204
满足
Figure PCTCN2018102962-appb-000205
其中p i,j为实数且0≤p i,j≤1,
Figure PCTCN2018102962-appb-000206
为复数且
Figure PCTCN2018102962-appb-000207
的模满足
Figure PCTCN2018102962-appb-000208
W 2 k包含
Figure PCTCN2018102962-appb-000209
其中至少存在i,j,使得
Figure PCTCN2018102962-appb-000210
所述W 2 k中的
Figure PCTCN2018102962-appb-000211
所对应的向量为V (i,j)
在一个示例中,所述网络设备还包括:
发送单元503,用于向终端设备发送参考信号,所述参考信号用于确定第一信息。
在一个示例中,
Figure PCTCN2018102962-appb-000212
其中X 1
Figure PCTCN2018102962-appb-000213
行I列的矩阵,X 1=[b 1 b 2 … b I],其中,向量b i为包含
Figure PCTCN2018102962-appb-000214
个元素的列向量,各个b i向量之间相互正交,1≤i≤I,I为大于或等于1的正整数。
在一个示例中,每个矩阵
Figure PCTCN2018102962-appb-000215
的第i行第j列元素中p i,j相同。
在一个示例中,W k为频域第k个子带的预编码矩阵。
在一个示例中,W k为频域第k个子带的信道频域响应。
在一个示例中,所述第一信息包含R的指示信息,R为信道矩阵的秩。
在一个示例中,R为所述终端接收天线的个数。
在一个示例中,所述每一个向量V (i,j)的L个元素中的第l个元素V (i,j)(l)与第一序列S的乘积构成
Figure PCTCN2018102962-appb-000216
满足
Figure PCTCN2018102962-appb-000217
所述
Figure PCTCN2018102962-appb-000218
为所述向量V的指示信息。
在一个示例中,所述每一个向量V (i,j)中的L个元素中的第l个元素用
Figure PCTCN2018102962-appb-000219
个比特来表示,其中,
Figure PCTCN2018102962-appb-000220
在一个示例中,至少存在l 1,l 2,i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000221
其中至少满足其 中之一的不等式:l 1≠l 2,i 1≠i 2,j 1≠j 2
在一个示例中,至少存在x,y,使得
Figure PCTCN2018102962-appb-000222
其中x不等于y。
在一个示例中,少存在i 1,i 2,j 1,j 2,使得
Figure PCTCN2018102962-appb-000223
包含的元素个数不等于
Figure PCTCN2018102962-appb-000224
所包含的元素个数,其中i 1≠i 2或者j 1≠j 2
上面图4至图5从模块化功能实体的角度分别对本申请实施例中的终端设备和网络设备进行详细描述,下面从硬件处理的角度对本申请实施例中的终端设备和网络设备进行详细描述。
图6A是本申请实施例提供的一种终端设备结构示意图,参考图6A。在采用集成的单元的情况下,图6A示出了上述实施例中所涉及的终端设备的一种可能的结构示意图。终端设备600包括:处理单元602和通信单元603。处理单元602用于对终端设备的动作进行控制管理,例如,处理单元602用于支持终端设备执行图3中的步骤302至步骤303,和/或用于本文所描述的技术的其它过程。通信单元603用于支持终端设备与其他网络实体的通信。终端设备还可以包括存储单元601,用于存储终端设备的程序代码和数据。
其中,处理单元602可以是处理器或控制器,例如可以是中央处理器(central processing unit,CPU),通用处理器,数字信号处理器(digital signal processor,DSP),专用集成电路(application-specific integrated circuit,ASIC),现场可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框,模块和电路。处理器也可以是实现计算功能的组合,例如包含一个或多个微处理器组合,DSP和微处理器的组合等等。通信单元603可以是通信接口、收发器、收发电路等,其中,通信接口是统称,可以包括一个或多个接口,例如收发接口。存储单元601可以是存储器。
当处理单元602为处理器,通信单元603为通信接口,存储单元601为存储器时,本申请实施例所涉及的终端设备可以为图6B所示的终端设备。
参阅图6B所示,该终端设备610包括:处理器612、通信接口613、存储器611。可选的,终端设备610还可以包括总线614。其中,通信接口613、处理器612以及存储器611可以通过总线614相互连接;总线614可以是外设部件互连标准(peripheral component interconnect,PCI)总线或扩展工业标准结构(extended industry standard architecture,EISA)总线等。总线614可以分为地址总线、数据总线、控制总线等。为便于表示,图6B中仅用一条粗线表示,但并不表示仅有一根总线或一种类型的总线。
图7是本申请实施例提供的一种网络设备的结构示意图,该网络设备700可因配置或性能不同而产生比较大的差异,可以包括一个或一个以上处理器(central processing units,CPU)701(例如,一个或一个以上处理器)和存储器709,一个或一个以上存储应用程序707或数据706的存储介质708(例如一个或一个以上海量存储设备)。其中,存储器709和存储介质708可以是短暂存储或持久存储。存储在存储介质708的程序可以包括一个或一个以上模块(图示没标出),每个模块可以包括对网络设备中的一系列指令操作。更进一步地, 处理器701可以设置为与存储介质708通信,在网络设备700上执行存储介质708中的一系列指令操作。
网络设备700还可以包括一个或一个以上电源702,一个或一个以上有线或无线网络接口703,一个或一个以上输入输出接口704,和/或,一个或一个以上操作系统705,例如Windows Serve,Mac OS X,Unix,Linux,FreeBSD等等。本领域技术人员可以理解,图7中示出的网络设备结构并不构成对网络设备的限定,可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置。
下面结合图7对网络设备的各个构成部件进行具体的介绍:
存储器709可用于存储软件程序以及模块,处理器701通过运行存储在存储器709的软件程序以及模块,从而执行网络设备的各种功能应用以及数据处理。存储器709可主要包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等;存储数据区可存储根据网络设备的使用所创建的数据(比如参考信号等)等。此外,存储器709可以包括高速随机存取存储器,还可以包括非易失性存储器,例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。在本申请实施例中提供的信道反馈的方法的程序和接收到的数据流存储在存储器709中,当需要使用时,处理器701从存储器709中调用。
处理器701是网络设备的控制中心,可以按照设置的信道反馈的方法进行处理。处理器701利用各种接口和线路连接整个网络设备的各个部分,通过运行或执行存储在存储器709内的软件程序和/或模块,以及调用存储在存储器709内的数据,执行网络设备的各种功能和处理数据,从而实现对信道的状态信息的反馈。
下面结合图8对终端设备的各个构成部件进行具体的介绍:
图8示出的是与本申请实施例提供的终端设备的部分结构的框图。参考图8,所述终端设备包括:射频(radio frequency,RF)电路810、存储器820、输入单元830、显示单元840、传感器850、音频电路860、无线保真(wireless fidelity,WIFI)模块870和处理器880等部件。本领域技术人员可以理解,图8中示出的终端设备结构并不构成对所述终端设备的限定,可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置。
所述处理器880是终端设备的控制中心,在本申请实施例中,可以根据接收到的参考信号,生成反映信道状态信息的第一信息,通过对第一信道状态信息中的相位进行频域压缩,且通过选择合适的q以及m l,l=1,2,…,L,使得傅里叶变换操作之后的能量弥散大幅度减少,从而减少需要上报的系数个数,减少上行资源的开销。
RF电路810通过总线与所述处理器880连接,负责向互联网发送数据或者从互联网接收数据,还可用于收发信息或通话过程中,信号的接收和发送,特别地,将网络设备(基站)的下行信息接收后,给所述处理器880处理;另外,将上行的数据发送给网络设备。通常,所述RF电路810包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(low noise amplifier,LNA)、双工器等。此外,所述RF电路810还可以通过无线通信与网络和其他设备通信。上述无线通信可以使用任一通信标准或协议,包括但不限 于全球移动通讯系统(global system of mobile communication,GSM)、通用分组无线服务(general packet radio service,GPRS)、码分多址(code division multiple access,CDMA)、宽带码分多址(wideband code division multiple access,WCDMA)、长期演进(long term evolution,LTE)、电子邮件、短消息服务(short messaging service,SMS)等。
存储器820可用于存储软件程序以及模块,所述处理器880通过运行存储在所述存储器820的软件程序以及模块,从而执行终端设备的各种功能应用以及数据处理。所述存储器820可主要包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序(比如生成第一信息功能、频域压缩功能等)等;存储数据区可存储根据移动终端的使用所创建的数据(比如第一信道状态信息、预编码矩阵等)等。此外,所述存储器820可以包括高速随机存取存储器,还可以包括非易失性存储器,例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存储的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如固态硬盘(solid state disk,SSD))等。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(read-only memory,ROM)、随机存取存储器(random access memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (31)

  1. 一种信道反馈的方法,其特征在于,包括:
    终端设备生成第一信息,所述第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息;其中q为整数,且q<Q;Q为整数,且Q>1;0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为频域带宽中子带的个数;所述向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述矩阵F q中的第l行向量满足:
    Figure PCTCN2018102962-appb-100001
    或者
    Figure PCTCN2018102962-appb-100002
    所述终端设备向网络设备发送所述第一信息。
  2. 一种信道反馈的方法,其特征在于,包括:
    所述网络设备从所述终端设备接收第一信息,所述第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息;其中q为整数,且q<Q;Q为整数,且Q>1;0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为频域带宽中子带的个数;所述向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述矩阵F q中的第l行向量满足:
    Figure PCTCN2018102962-appb-100003
    或者
    Figure PCTCN2018102962-appb-100004
    所述网络设备根据所述第一信息获取信道状态信息。
  3. 根据权利要求1或2所述的方法,其特征在于,所述向量C的第k个元素c k包含于第k个频域子带的第二矩阵W 2 k的第i行第j列的元素中,所述第二矩阵W 2 k与第一矩阵W 1满足:W k=W 1×W 2 k;W k为在第k个频域子带上的信道状态信息;
    其中W k是N t行R列的矩阵,W 1为N t行2I列的矩阵,其中2I≥R,W 2 k为2I行R列的矩阵;所述W 2 k中的第i行第j列的元素
    Figure PCTCN2018102962-appb-100005
    满足
    Figure PCTCN2018102962-appb-100006
    其中p i,j为实数且0≤p i,j≤1,
    Figure PCTCN2018102962-appb-100007
    为复数且
    Figure PCTCN2018102962-appb-100008
    的模满足
    Figure PCTCN2018102962-appb-100009
    1≤i≤2I,1≤j≤R,1≤k≤N;
    W 2 k包含
    Figure PCTCN2018102962-appb-100010
    其中至少存在i,j,使得
    Figure PCTCN2018102962-appb-100011
    所述W 2 k中的
    Figure PCTCN2018102962-appb-100012
    所对应的向量为V (i,j)
  4. 根据权利要求3所述的方法,其特征在于,
    Figure PCTCN2018102962-appb-100013
    其中X 1
    Figure PCTCN2018102962-appb-100014
    行I 列的矩阵,X 1=[b 1 b 2 … b I],其中,向量b i为包含
    Figure PCTCN2018102962-appb-100015
    个元素的列向量,各个b i向量之间相互正交,1≤i≤I,I为大于或等于1的正整数。
  5. 根据权利要求3所述的方法,其特征在于,每个矩阵
    Figure PCTCN2018102962-appb-100016
    的第i行第j列元素中p i,j相同。
  6. 根据权利要求3-5中任一项所述的方法,其特征在于,W k为频域第k个子带的预编码矩阵。
  7. 根据权利要求3-5中任一项所述的方法,其特征在于,W k为频域第k个子带的信道频域响应。
  8. 根据权利要求6所述的方法,其特征在于,所述第一信息包含R的指示信息,R为信道矩阵的秩。
  9. 根据权利要求7所述的方法,其特征在于,R为所述终端设备接收天线的个数。
  10. 根据权利要求3所述的方法,其特征在于,所述每一个向量V (i,j)的L个元素中的第l个元素V (i,j)(l)与第一序列S满足
    Figure PCTCN2018102962-appb-100017
    所述
    Figure PCTCN2018102962-appb-100018
    为所述向量V的指示信息。
  11. 根据权利要求3所述的方法,其特征在于,所述每一个向量V (i,j)中的L个元素中的第l个元素用
    Figure PCTCN2018102962-appb-100019
    个比特来表示,其中,
    Figure PCTCN2018102962-appb-100020
  12. 根据权利要求11所述的方法,其特征在于,至少存在l 1,l 2,i 1,i 2,j 1,j 2,使得
    Figure PCTCN2018102962-appb-100021
    其中至少满足其中之一的不等式:l 1≠l 2,i 1≠i 2,j 1≠j 2
  13. 根据权利要求11所述的方法,其特征在于,至少存在x,y,使得
    Figure PCTCN2018102962-appb-100022
    其中x不等于y。
  14. 根据权利要求3所述的方法,其特征在于,至少存在i 1,i 2,j 1,j 2,使得
    Figure PCTCN2018102962-appb-100023
    包含的元素个数不等于
    Figure PCTCN2018102962-appb-100024
    所包含的元素个数,其中i 1≠i 2或者j 1≠j 2
  15. 一种设备,所述设备为终端设备,其特征在于,包括:
    处理单元,用于生成第一信息,所述第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息;其中q为整数,且q<Q;Q为整数,且Q>1;0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为频域带宽中子带的个数;所述向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述矩阵F q中的第l行向量满足:
    Figure PCTCN2018102962-appb-100025
    或者
    Figure PCTCN2018102962-appb-100026
    发送单元,用于向网络设备发送所述第一信息。
  16. 一种设备,所述设备为网络设备,其特征在于,包括:
    接收单元,用于从终端设备接收第一信息,所述第一信息包括参数q,m 1,m 2,…,m L,以及向量V的指示信息;其中q为整数,且q<Q;Q为整数,且Q>1;0≤m l≤N-1,1≤l≤L;L>1,N、L、l为整数,N为频域带宽中子带的个数;所述向量V包含L个元素,且满足V=F q×C,其中C为N个元素c 1,…,c N构成的向量,C=[c 1 c 2 … c N] T,c k用于表示第k个频域子带的信道状态信息,且c k为复数,c k的模|c k|≤1,1≤k≤N;所述矩阵F q中的第l行向量满足:
    Figure PCTCN2018102962-appb-100027
    或者
    Figure PCTCN2018102962-appb-100028
    处理单元,用于根据所述第一信息获取信道状态信息。
  17. 根据权利要求15或16所述的设备,其特征在于,所述向量C的第k个元素c k包含于第k个频域子带的第二矩阵W 2 k的第i行第j列的元素中,所述第二矩阵W 2 k与第一矩阵W 1满足:W k=W 1×W 2 k;W k为在第k个频域子带上的信道状态信息;
    其中W k是N t行R列的矩阵,W 1为N t行2I列的矩阵,其中2I≥R,W 2 k为2I行R列的矩阵;所述W 2 k中的第i行第j列的元素
    Figure PCTCN2018102962-appb-100029
    满足
    Figure PCTCN2018102962-appb-100030
    其中p i,j为实数且0≤p i,j≤1,
    Figure PCTCN2018102962-appb-100031
    为复数且
    Figure PCTCN2018102962-appb-100032
    的模满足
    Figure PCTCN2018102962-appb-100033
    1≤i≤2I,1≤j≤R,1≤k≤N;
    W 2 k包含
    Figure PCTCN2018102962-appb-100034
    其中至少存在i,j,使得
    Figure PCTCN2018102962-appb-100035
    所述W 2 k中的
    Figure PCTCN2018102962-appb-100036
    所对应的向量为V (i,j)
  18. 根据权利要求17所述的设备,其特征在于,
    Figure PCTCN2018102962-appb-100037
    其中X1为
    Figure PCTCN2018102962-appb-100038
    行I列的矩阵,X 1=[b 1 b 2 … b I],其中,向量b i为包含
    Figure PCTCN2018102962-appb-100039
    个元素的列向量,各个b i向量之间相互正交,1≤i≤I,I为大于或等于1的正整数。
  19. 根据权利要求17所述的设备,其特征在于,每个矩阵
    Figure PCTCN2018102962-appb-100040
    的第i行第j列元素中p i,j相同。
  20. 根据权利要求17-19中任一项所述的设备,其特征在于,W k为频域第k个子带的预编码矩阵。
  21. 根据权利要求17-19中任一项所述的设备,其特征在于,W k为频域第k个子带的信道频域响应。
  22. 根据权利要求20所述的设备,其特征在于,所述第一信息包含R的指示信息,R为信道矩阵的秩。
  23. 根据权利要求21所述的设备,其特征在于,R为所述终端接收天线的个数。
  24. 根据权利要求17所述的设备,其特征在于,所述每一个向量V (i,j)的L个元素中的第l个元素V (i,j)(l)与第一序列S的乘积构成
    Figure PCTCN2018102962-appb-100041
    满足
    Figure PCTCN2018102962-appb-100042
    所述
    Figure PCTCN2018102962-appb-100043
    为所 述向量V的指示信息。
  25. 根据权利要求17所述的设备,其特征在于,所述每一个向量V (i,j)中的L个元素中的第l个元素用
    Figure PCTCN2018102962-appb-100044
    个比特来表示,其中,
    Figure PCTCN2018102962-appb-100045
  26. 根据权利要求25所述的设备,其特征在于,至少存在l 1,l 2,i 1,i 2,j 1,j 2,使得
    Figure PCTCN2018102962-appb-100046
    其中至少满足其中之一的不等式:l 1≠l 2,i 1≠i 2,j 1≠j 2
  27. 根据权利要求25所述的设备,其特征在于,至少存在x,y,使得
    Figure PCTCN2018102962-appb-100047
    其中x不等于y。
  28. 根据权利要求25所述的设备,其特征在于,至少存在i 1,i 2,j 1,j 2,使得
    Figure PCTCN2018102962-appb-100048
    包含的元素个数不等于
    Figure PCTCN2018102962-appb-100049
    所包含的元素个数,其中i 1≠i 2或者j 1≠j 2
  29. 一种计算机可读存储介质,包括指令,当其在计算机上运行时,使得计算机执行如权利要求1-14任意一项所述的方法。
  30. 一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行如权利要求1-14任意一项所述的方法。
  31. 一种芯片,其特征在于,所述芯片包括输入接口、输出接口、至少一个处理器和至少一个存储器,所述至少一个存储器用于存储代码,所述至少一个处理器用于执行所述存储器中的代码,当所述代码被执行时,所述芯片实现权利要求1至14任一项所述的方法。
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