WO2022242444A1 - 信道状态信息传输方法、装置、通信节点及存储介质 - Google Patents

信道状态信息传输方法、装置、通信节点及存储介质 Download PDF

Info

Publication number
WO2022242444A1
WO2022242444A1 PCT/CN2022/089804 CN2022089804W WO2022242444A1 WO 2022242444 A1 WO2022242444 A1 WO 2022242444A1 CN 2022089804 W CN2022089804 W CN 2022089804W WO 2022242444 A1 WO2022242444 A1 WO 2022242444A1
Authority
WO
WIPO (PCT)
Prior art keywords
vectors
coefficient
coefficients
vector
channel state
Prior art date
Application number
PCT/CN2022/089804
Other languages
English (en)
French (fr)
Inventor
李永
吴昊
鲁照华
王瑜新
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to KR1020237041210A priority Critical patent/KR20240004752A/ko
Priority to EP22803768.5A priority patent/EP4333334A1/en
Priority to CA3218879A priority patent/CA3218879A1/en
Publication of WO2022242444A1 publication Critical patent/WO2022242444A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0478—Special codebook structures directed to feedback optimisation
    • H04B7/048—Special codebook structures directed to feedback optimisation using three or more PMIs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0469—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking special antenna structures, e.g. cross polarized antennas into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]

Definitions

  • the present application relates to the technical field of communication, for example, to a channel state information transmission method, device, communication node and storage medium.
  • the transmission strategy of the base station data transmission in the wireless communication system depends on the channel state information.
  • the base station determines a strategy for data transmission based on the channel state represented by the received channel state information, and transmits data, thereby improving the efficiency of data transmission.
  • the accuracy of the channel state represented by the channel state information affects the transmission strategy of the base station, thereby affecting the efficiency of data transmission.
  • resources for feeding back channel state information are limited, and feedback overhead needs to be saved.
  • the present application provides a channel state information transmission method, device, communication node and storage medium, which effectively improves the accuracy of the channel state represented by the channel state information and saves feedback overhead.
  • an embodiment of the present application provides a method for transmitting channel state information, which is applied to a first communication node, and the method includes:
  • the configuration information includes configuration information of channel state information.
  • an embodiment of the present application provides a method for transmitting channel state information, which is applied to a second communication node, and the method includes:
  • the configuration information includes configuration information of channel state information.
  • the embodiment of the present application provides an information transmission device, which is configured in a first communication node, and the device includes:
  • the first receiving module is configured to receive configuration information of the second communication node
  • the second receiving module is configured to receive the channel state information reference signal sent by the second communication node according to the configuration information
  • a reporting module configured to report channel state information according to the configuration information, and the channel state information is determined according to the channel state information reference signal;
  • the configuration information includes configuration information of channel state information.
  • the embodiment of the present application provides an information transmission device, which is configured in a second communication node, and the device includes:
  • the transmission module is configured to transmit configuration information
  • An acquisition module configured to acquire channel state information sent by the first communication node, where the channel state information is reported according to the configuration information
  • the configuration information includes configuration information of channel state information.
  • the embodiment of the present application provides a communication node, including:
  • processors one or more processors
  • the one or more processors are made to implement the channel state information transmission method provided by the embodiment of the present application.
  • the embodiments of the present application provide a storage medium, the storage medium stores a computer program, and when the computer program is executed by a processor, any one of the channel state information transmission methods in the embodiments of the present application is implemented.
  • FIG. 1 is a schematic flowchart of a method for transmitting channel state information provided in an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a method for transmitting channel state information provided in an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of an information transmission device provided in an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of an information transmission device provided in an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a communication node provided by an embodiment of the present application.
  • FIG. 1 is a schematic flow chart of a method for transmitting channel state information provided in an embodiment of the present application.
  • the method can be applied to improve the accuracy of the channel state represented by the channel state information.
  • the method It may be executed by an information transmission device, which may be implemented by software and/or hardware, and integrated on a first communication node, where the first communication node may be a terminal, such as a user equipment.
  • Wireless communication has developed to the 5th generation of communication technology.
  • LTE Long Term Evolution
  • NR New Radio
  • OFDM Orthogonal Frequency Division Multiplexing
  • the smallest frequency domain unit is a subcarrier, and the smallest time domain unit is an OFDM symbol
  • a resource block (Resource Block, RB)
  • a resource A block is defined as a specific number of continuous subcarriers
  • a bandwidth block (Bandwidth part, BWP) is defined, and a bandwidth block is defined as another specific number of continuous resource blocks on a carrier
  • time slots are defined (slot), a time slot is defined as another specific number of consecutive OFDM symbols.
  • a method for obtaining channel state information in a wireless communication system and a method for utilizing the channel state information
  • the base station sends the reference signal; the terminal measures the reference signal, determines the channel state information from the base station to the terminal, and reports the channel state information to the base station; the base station receives the channel state information reported by the terminal.
  • the base station determines a strategy for data transmission according to the channel state represented by the received channel state information, and transmits data, thereby improving the efficiency of data transmission.
  • the accuracy of the channel state represented by the channel state information affects the transmission strategy of the base station, thereby affecting the efficiency of data transmission.
  • the development of wireless communication technology needs to further design the mechanism of obtaining channel state information to improve the accuracy of the obtained channel state, increase the flexibility of obtaining channel state information, reduce the resource overhead used, and reduce the complexity of the system.
  • the reference signal sent by the base station to the terminal is the downlink reference signal;
  • the downlink reference signal used for channel state information in the LTE system includes cell-specific reference signal (Cell-specific Reference Signal, CRS), channel state information reference signal (Channel-State Information Reference Signal, CSI-RS);
  • the downlink reference signal used for channel state information in the NR system includes a channel state information reference signal (Channel-State Information Reference Signal, CSI-RS).
  • the channel state information reference signal is carried by the channel state information reference signal resource (CSI-RS Resource), and the channel state information reference signal resource is composed of code division multiplexing (Code Division Multiplexing, CDM) groups, and a CDM group is It is composed of radio resource elements, on which the CSI-RS of a group of CSI-RS ports is multiplexed by means of code division multiplexing.
  • CDM Code Division Multiplexing
  • the content of the channel state information transmitted between the base station and the terminal includes a channel quality indicator (Channel quality indicator, CQI), which is used to indicate the quality of the channel; or a precoding matrix indicator (Precoding Matrix Indicator, PMI), which is used to indicate Precoding matrix applied to base station antennas.
  • CQI Channel quality indicator
  • PMI Precoding Matrix Indicator
  • the reporting format of one type of CQI is wideband CQI reporting (wideband CQI reporting), that is, reporting a channel quality for the channel state information band (CSI reporting band), which corresponds to the entire channel state information band; the other type of CQI reporting
  • the format is subband CQI reporting (subband CQI reporting), that is, the channel quality of the channel state information band (CSI reporting band) is given in units of subbands, and one channel quality corresponds to a subband, which is the channel state information band. Each subband reports a channel quality.
  • the subband is a frequency domain unit, defined as N consecutive resource blocks (Resource Block, RB), N is a positive integer; for the convenience of description, this application is called a channel quality indicator subband, or a CQI subband, or A subband; wherein, N is called a size (size) of a CQI subband, or is called a CQI subband size, or is called a subband size (size).
  • the bandwidth block is divided into subbands, and the channel state information band (CSI reporting band) is defined by a subset of the subbands of the bandwidth block.
  • a channel state information band (CSI reporting band) is a frequency band on which channel state information needs to be reported.
  • One way to determine the channel quality is to determine according to the strength of the reference signal received by the terminal; another way to determine the channel quality is to determine according to the signal-to-interference-noise ratio of the received reference signal.
  • reporting CQI in the way of wideband CQI report can reduce the resource overhead for CQI reporting; if the channel quality varies greatly in the frequency domain, report in the way of subband CQI report CQI can increase the accuracy of CQI reporting.
  • the reporting format of one type of PMI is a broadband PMI report, that is, a PMI is reported for a channel state information frequency band (CSI reporting band), and the PMI corresponds to the entire channel state information frequency band.
  • Another type of PMI reporting format is sub-band PMI report, that is, one PMI is reported for each sub-band of the channel state information frequency band, or one component of the PMI is reported for each sub-band of the channel state information frequency band.
  • PMI is composed of X1 and X2.
  • One way to report a PMI component for each subband of the channel state information frequency band is to report one X1 for the entire frequency band and one X2 for each subband; another way is , reporting one X1 and one X2 for each subband.
  • the reporting format of another type of PMI is that the reported PMI indicates R precoding matrices for each subband, where R is a positive integer.
  • R represents the number of precoding matrix subbands included in each subband, or the number of precoding matrix subbands included in each CQI subband.
  • an embodiment of the present application provides a channel state information transmission method, which includes the following steps:
  • the configuration information includes configuration information of channel state information.
  • the configuration information may also include configuration information of the channel state information reference signal.
  • the first communication node may report the channel state information based on the configuration information of the channel state information, and receive and measure the channel state information reference signal based on the configuration information of the channel state information reference signal.
  • the configuration information of the channel state information may include the reporting format of the precoding matrix indicator, and the information indicated by the reporting format of the precoding matrix indicator is not limited here.
  • this embodiment may measure the channel state information reference signal to determine the channel state information.
  • this step may report the channel state information to the second communication node according to the configuration information of the channel state information.
  • the channel state information includes a precoding matrix indicator, and the precoding matrix indicated by the precoding matrix indicator is determined by the first group of vectors, or determined by the first group of vectors and the second group of vectors;
  • the first group of vectors includes L vectors, and the second group of vectors includes M ⁇ vectors, where L and M ⁇ are positive integers; wherein, a vector in the first group of vectors corresponds to a port of the channel state information reference signal;
  • DFT discrete Fourier Transform
  • t is the index number of the element in the DFT vector, and the value is 0,1...,N 3 -1.
  • t may also represent the index number of the precoding matrix.
  • t may also represent an index number of a frequency domain unit, and a value of t corresponds to a frequency domain unit.
  • the precoding matrix with the index t corresponding to the element with the index t of the DFT vector in the second group of vectors is the precoding matrix of the frequency domain unit with the index t.
  • the precoding matrix may only consist of the first group of vectors, or may consist of the first group of vectors and the second group of vectors.
  • the precoding matrix is composed of a first set of vectors and a second set of vectors, for example: where W represents the precoding matrix, W 1 represents the matrix formed by the first set of vectors, W f represents the matrix formed by the second set of vectors, W f H represents the transposed conjugate matrix of W f , W 2 represents the matrix formed by the first set of vectors A matrix of the coefficients of the union of the vector and the second vector.
  • the second communication node may indicate through the configuration information of the channel state information whether the precoding matrix is only composed of the first group of vectors, or whether the precoding matrix is composed of the first group of vectors and the second group of vectors. That is, the second communication node may indicate whether the precoding matrix includes the second group of vectors through the configuration information of the channel state information.
  • the precoding indicator includes coefficients of vectors constituting the precoding matrix, and whether to omit the coefficients of the vectors constituting the precoding matrix can be determined according to corresponding priorities.
  • the polarization direction where the strongest coefficient of the vector constituting the precoding matrix is located may be a strong polarization direction, and the other polarization direction may be a weak polarization direction.
  • the precoding matrix includes two polarization directions, and the other polarization direction except the strong polarization direction is a weak polarization direction.
  • the channel state information includes the number of coefficients that need to be reported among the coefficients that make up the vector of the precoding matrix, and whether to indicate the strongest coefficient is determined according to the number of coefficients that need to be reported. Whether to indicate the positions of the coefficients that need to be reported in a bitmap manner is determined according to the number of the coefficients that need to be reported.
  • a channel state information transmission method provided by the present application, receiving configuration information of a second communication node; receiving a channel state information reference signal sent by the second communication node according to the configuration information; reporting channel state information according to the configuration information , the channel state information is determined according to the channel state information reference signal; wherein the configuration information includes configuration information of the channel state information.
  • the method directly determines and reports the channel state information based on the configuration information, saves feedback overhead, and can more accurately determine the channel state, thereby facilitating the second communication node to make an accurate transmission strategy, thereby improving the efficiency of data transmission.
  • the configuration information of the channel state information includes the reporting format of the precoding matrix indicator, wherein the reporting format of the precoding matrix indicator indicates at least one of the following information:
  • the channel state information includes reports on the M ⁇ vectors
  • the precoding matrix includes the second set of vectors.
  • the reporting format of the precoding matrix indicator indicates at least one of the following information:
  • the value of M ⁇ whether the report on the M ⁇ vectors is included in the channel state information; whether the precoding matrix includes the second set of vectors.
  • the reporting format of the precoding matrix indicator indicates at least one of the following information:
  • the value range of M ⁇ whether the report of the M ⁇ vectors is included in the channel state information; whether the precoding matrix includes the second set of vectors.
  • the configuration information of the channel state information includes the report format of the PMI, and the report format of the PMI indicates whether the precoding matrix includes the second group of vectors. That is, the reporting format of the PMI indicates whether the precoding matrix is composed of only the first group of vectors, or whether the precoding matrix is composed of the first group of vectors and the second group of vectors.
  • the report format of the PMI is that the wideband PMI report corresponds to indicating that the precoding matrix does not include the second group of vectors, or indicating that the precoding matrix only consists of the first group of vectors.
  • the reporting format of the PMI is that the subband PMI report corresponds to indicating that the precoding matrix includes the second group of vectors, or indicating that the precoding matrix is composed of the first group of vectors and the second group of vectors.
  • the precoding matrix includes a second group of vectors, and the second communication node may indicate the value of M ⁇ or the range of the value of M ⁇ through the configuration information of the channel state information.
  • the configuration information of the channel state information includes the report format of the PMI, and the report format of the PMI indicates the value of M ⁇ or the range of the value of M ⁇ .
  • the report format of the PMI is that the broadband PMI report corresponds to a value of 1 indicating M ⁇ .
  • the report format of the PMI is that the subband PMI report corresponds to indicating that the value of M ⁇ is 2, or indicating that the value of M ⁇ is greater than 1.
  • the precoding matrix only consists of the first set of vectors, and the first communication node does not need to report the second set of vectors; the precoding matrix consists of the first set of vectors and the second set of vectors, and the first communication node needs to report the second set of vectors .
  • the precoding matrix includes a second group of vectors, the second group of vectors is determined in advance by the protocol, and the first communication node does not need to report the second group of vectors; the second group of vectors is not predetermined, and the terminal (ie, the first communication node) needs to report Reports the second set of vectors.
  • the value of M ⁇ is 1, and the second group of vectors is a vector whose elements are all 1, and the terminal does not need to report the second group of vectors; the value of M ⁇ is 2, or greater than 1, and the second group of vectors is not predetermined. Terminals need to report a second set of vectors.
  • the base station may indicate whether to report the second group of vectors through configuration information of the channel state information.
  • the configuration information of the channel state information includes the report format of the PMI, and the report format of the PMI indicates whether to report the second group of vectors.
  • the reporting format of the PMI is that the wideband PMI report corresponds to indicating that the terminal does not report the second group of vectors.
  • the report format of the PMI is that the subband PMI report corresponds to instructing the terminal to report the second group of vectors.
  • the precoding matrix indicator includes coefficients of vectors constituting the precoding matrix, and the priority of the coefficients of the vectors is determined according to at least one of the following methods:
  • the precoding matrix indicator includes the position of the vector corresponding to the strongest coefficient in the second set of vectors, and the priority of the coefficient of the vector is according to the vector corresponding to the coefficient of the vector in the second set of vectors The relative position of the position of the position and the position of the vector corresponding to the strongest coefficient is determined;
  • the precoding matrix indicator includes the position of the vector corresponding to the strongest coefficient in the first set of vectors, and the priority of the coefficient of the vector is according to the position of the corresponding vector of the coefficient of the vector in the first set of vectors Relative position determination of the position of the vector corresponding to said strongest coefficient;
  • the precoding matrix indicator includes an indication of strong polarization direction vectors in the first set of vectors, coefficients of strong polarization direction vectors have a higher priority than corresponding weak polarization direction coefficients.
  • the channel state information includes a precoding indicator, also known as a precoding matrix indicator, and the precoding indicator includes coefficients of vectors (that is, the vectors that make up the precoding matrix), and it is usually encountered that the resources for feeding back channel state information are not enough to feed back
  • the content of the channel state information originally planned to be reported needs to omit some coefficients of the vector. For example, adding a new feedback report task to the original resources will result in insufficient resources to feed back the content of the channel state information originally planned to be reported. For another example, because the channel of the resource originally planned to carry the feedback report changes, the channel capacity of the corresponding resource is reduced, which is not enough to carry the content of the channel state information originally planned to report.
  • One way to omit some vector coefficients is to omit the coefficients with low priority and keep the coefficients with high priority according to the priority of the coefficients. Therefore, there is a need for a method or manner of prioritization.
  • the low priority described in the omitted low priority coefficient and the high priority described in the retained high priority coefficient are not limited here. For example, it can be determined by a threshold, or by the coefficient that needs to be omitted can also be determined by the number of coefficients that need to be retained.
  • the strongest coefficient is the coefficient with the largest amplitude value among the coefficients, or the coefficient with the highest power.
  • the precoding indicator includes the position of the vector corresponding to the strongest coefficient in the second group of vectors, and the priority of the coefficient is based on the position of the vector corresponding to the coefficient in the second group of vectors. The position is determined relative to the position of the vector corresponding to the strongest coefficient.
  • the position of the vector corresponding to the strongest coefficient in the second group of vectors is the index number of the vector corresponding to the strongest coefficient in the second group of vectors, and the coefficients of the vectors that make up the precoding matrix are in the second group of vectors.
  • the position of the corresponding vector in the group vector is the index number of the vector corresponding to the coefficient in the second group vector.
  • the position of the vector corresponding to the strongest coefficient in the second group of vectors is the value of the parameter f of the vector corresponding to the strongest coefficient in the second group of vectors; the coefficients of the vectors forming the precoding matrix are in the second group of vectors
  • the position of the corresponding vector in is the value of the parameter f of the vector corresponding to the coefficient in the second set of vectors.
  • the position of the vector corresponding to the strongest coefficient in the second group of vectors is the index number of the vector corresponding to the strongest coefficient in the second group of vectors in the DFT vector, and the vectors that form the precoding matrix
  • the position of the vector corresponding to the coefficient in the second group of vectors is the index number of the vector corresponding to the coefficient in the second group of vectors in the DFT vector.
  • the position of the vector corresponding to the strongest coefficient in the second set of vectors is the parameter of the vector corresponding to the strongest coefficient in the second set of vectors
  • the value of; the position of the vector corresponding to the coefficient of the vector constituting the precoding matrix in the second group of vectors is the parameter of the vector corresponding to the coefficient in the second group of vectors value.
  • An example of the relative position between the position of the vector corresponding to the vector in the second set of vectors and the position of the vector corresponding to the strongest coefficient of the coefficient of the vector constituting the precoding matrix is that the coefficient (in the coefficients of the vector constituting the precoding matrix Any coefficient of any coefficient) in the second group of vectors corresponding to the position of the vector and the position of the vector corresponding to the strongest coefficient, or the coefficient (any coefficient in the coefficients of the vectors that make up the precoding matrix) in the second group of vectors
  • the position of the corresponding vector in the group vector minus the difference of the position of the vector corresponding to the strongest coefficient, or the position of the vector corresponding to the strongest coefficient minus the coefficient (any coefficient in the coefficients of the vector constituting the precoding matrix ) is the difference in the positions of the corresponding vectors in the second set of vectors.
  • Another example of the relative position between the position of the vector corresponding to the coefficient of the vector constituting the precoding matrix in the second group of vectors and the position of the vector corresponding to the strongest coefficient is that the coefficients of the vector constituting the precoding matrix The absolute value of the difference between the position of the corresponding vector in the second set of vectors and the position of the vector corresponding to the strongest coefficient.
  • the priority of the coefficients of the vectors that make up the precoding matrix is determined according to the relative position of the vector corresponding to the coefficient in the second group of vectors and the position of the vector corresponding to the strongest coefficient.
  • An example is that the relative position The larger the value, the lower the priority; or, the smaller the value of the relative position, the higher the priority. Therefore, the components with high energy are retained, and the components with low energy are omitted, the closer the fed-back precoding matrix is to the channel, and the received energy of the signal transmitted according to this precoding is the largest. It is beneficial to improve the signal-to-noise ratio and improve the communication capacity.
  • the priority of the coefficients of the vectors that make up the precoding matrix is determined according to the relative position of the vector corresponding to the coefficient in the second group of vectors and the position of the vector corresponding to the strongest coefficient.
  • Another example is that the relative position The larger the value of , the higher the priority; or, the smaller the value of the relative position, the lower the priority. Therefore, by omitting components with high energy and keeping components with low energy, the fed back precoding matrix is closer to the null space of the channel, and the received energy of the signal transmitted according to this precoding matrix can be as small as possible. Therefore, the signal transmitted according to the precoding matrix can reduce the interference to the receiving end, which is beneficial to reduce the interference, improve the signal-to-noise ratio, and improve the communication capacity.
  • the priority of the coefficients constituting the vector of the precoding matrix is determined according to the priority value of the coefficient.
  • the lower the priority; the priority value of the coefficient is determined according to the relative position of the position of the vector corresponding to the coefficient in the second group of vectors and the position of the vector corresponding to the strongest coefficient; the greater the value of the relative position, the greater the value of the relative position
  • the priority value of the joint coefficient of the vector in one group of vectors and the vector in the second group of vectors whose index number is f; f sci is the index number of the vector corresponding to the strongest coefficient in the second group of vectors, ⁇ 2 (f , f sci ) is the relative position of the vector corresponding to the coefficient in the second group of vectors and the vector corresponding to the strongest coefficient.
  • the precoding indicator includes the position of the vector corresponding to the strongest coefficient in the first group of vectors, and the priority of the coefficients of the vectors constituting the precoding matrix is based on the coefficients in the first group of vectors. The relative position of the position of the corresponding vector in the vector and the position of the vector corresponding to the strongest coefficient is determined.
  • the position of the vector corresponding to the strongest coefficient in the first group of vectors is the index number of the vector corresponding to the strongest coefficient in the first group of vectors, and the coefficients of the vectors that make up the precoding matrix are in the first
  • the position of the corresponding vector in the set of vectors is the index number of the vector to which the coefficient corresponds in the first set of vectors.
  • the position of the vector corresponding to the strongest coefficient in the first group of vectors is the value of parameter l of the vector corresponding to the strongest coefficient in the first group of vectors; the coefficients of the vectors forming the precoding matrix are in the first group of vectors
  • the position of the corresponding vector in is the value of the parameter l of the vector corresponding to the coefficient in the first set of vectors.
  • the position of the vector corresponding to the strongest coefficient in the first group of vectors is the index number of the CSI-RS port corresponding to the vector corresponding to the strongest coefficient in the first group of vectors, and the coefficient is at the
  • the position of the corresponding vector in a group of vectors is the index number of the CSI-RS port corresponding to the vector corresponding to the coefficient in the first group of vectors.
  • the position of the vector corresponding to the strongest coefficient of the priority value in the first group of vectors is the index number of the CSI-RS port corresponding to the vector corresponding to the strongest coefficient in the first group of vectors; the precoding The position of the vector corresponding to the coefficient of the vector of the matrix in the first group of vectors is the index number of the CSI-RS port corresponding to the vector corresponding to the coefficient in the first group of vectors.
  • An example of the relative position between the position of the corresponding vector in the first set of vectors and the position of the vector corresponding to the strongest coefficient of the coefficients of the vectors forming the precoding matrix is that the coefficients (among the coefficients of the vectors forming the precoding matrix Any coefficient of any coefficient) in the first set of vectors corresponds to the position of the vector and the position of the vector corresponding to the strongest coefficient, or is the coefficient (any coefficient in the coefficients of the vectors that make up the precoding matrix) in the first group of vectors
  • the position of the corresponding vector in the group vector minus the difference of the position of the vector corresponding to the strongest coefficient, or the position of the vector corresponding to the strongest coefficient minus the coefficient (any coefficient in the coefficients of the vector constituting the precoding matrix ) is the difference in the positions of the corresponding vectors in the first set of vectors.
  • Another example of the relative position between the position of the vector corresponding to the vector of the coefficient forming the precoding matrix in the first group of vectors and the position of the vector corresponding to the strongest coefficient is that the coefficient (the coefficient of the vector forming the precoding matrix The absolute value of the difference between the position of the corresponding vector in the first group of vectors and the position of the vector corresponding to the strongest coefficient.
  • the priority of the coefficients of the vectors that make up the precoding matrix is determined according to the relative position of the vector corresponding to the coefficient in the first group of vectors and the position of the vector corresponding to the strongest coefficient. For example, the relative The larger the value of the position, the lower the priority; or, the smaller the value of the relative position, the higher the priority. Therefore, the components with high energy are retained, and the components with low energy are omitted, the closer the fed-back precoding matrix is to the channel, and the received energy of the signal transmitted according to this precoding is the largest. It is beneficial to improve the signal-to-noise ratio and improve the communication capacity.
  • the priority of the coefficients of the vectors that make up the precoding matrix is determined according to the relative position of the vector corresponding to the coefficient in the first group of vectors and the position of the vector corresponding to the strongest coefficient. Another example is that the The larger the value of the relative position, the higher the priority; or, the smaller the value of the relative position, the lower the priority. Therefore, by omitting components with high energy and keeping components with low energy, the fed back precoding matrix is closer to the null space of the channel, and the received energy of the signal transmitted according to this precoding matrix can be as small as possible. Therefore, the interference of the signal transmitted according to the precoding to the receiving end can be reduced, which is beneficial to reduce the interference, improve the signal-to-noise ratio, and improve the communication capacity.
  • the priority of the coefficients constituting the vector of the precoding matrix is determined according to the priority value of the coefficient, the smaller the priority value of the coefficient is, the higher the priority of the coefficient is, or the larger the priority value of the coefficient is The lower the priority of the coefficient is; the priority value of the coefficient is determined according to the relative position of the vector corresponding to the coefficient in the first group of vectors and the position of the vector corresponding to the strongest coefficient; the value of the relative position The larger the value, the greater the priority value; or, the smaller the value of the relative position, the smaller the priority value.
  • the priorities of the coefficients constituting the vectors of the precoding matrix are determined in the following manner:
  • the precoding indicator includes the position of the vector corresponding to the strongest coefficient in the second group of vectors, and the position of the vector corresponding to the strongest coefficient in the first group of vectors; the priority of the coefficients of the vectors forming the precoding matrix is based on the composition
  • the relative position of the vector corresponding to the coefficient of the vector of the precoding matrix in the second group of vectors and the position of the vector corresponding to the strongest coefficient in the second group of vectors, and the position of the vectors that make up the precoding matrix The position of the vector corresponding to the coefficient in the first group of vectors is jointly determined with the relative position of the position of the vector corresponding to the strongest coefficient in the first group of vectors.
  • the priority of the coefficients constituting the vector of the precoding matrix is determined according to the priority value of the coefficient, the smaller the priority value of the coefficient is, the higher the priority of the coefficient is, or the larger the priority value of the coefficient is The lower the priority of the coefficient is; the priority value of the coefficient is based on the relative position of the vector corresponding to the coefficient in the second set of vectors to the position of the vector corresponding to the strongest coefficient in the second set of vectors The position and relative position of the vector corresponding to the coefficient in the first set of vectors and the position of the vector corresponding to the strongest coefficient in the first set of vectors are jointly determined.
  • the priorities of the coefficients constituting the vectors of the precoding matrix are determined in the following manner:
  • the priority of the coefficients constituting the vector of the precoding matrix is determined according to the priority value of the coefficient, the smaller the priority value of the coefficient is, the higher the priority of the coefficient is, or the larger the priority value of the coefficient is The lower the priority of the coefficient; the smaller the index number of the vector corresponding to the coefficient in the second group of vectors, the smaller the priority value, or the larger the index number of the vector corresponding to the coefficient in the second group of vectors The higher the priority value is.
  • ⁇ 1 (l,l sci ) Another example of the relative position ⁇ 1 (l,l sci ) between the position of the vector corresponding to the coefficient of the vector constituting the precoding matrix in the first group of vectors and the position of the vector corresponding to the strongest coefficient is that the A function of the difference between the position of the vector corresponding to the coefficient in the first set of vectors and the position of the vector corresponding to the strongest coefficient.
  • ⁇ 1 (l,l sci ) is a function of the difference between l and l sci .
  • ⁇ 1 (l,l sci ) min ⁇ 2 mod(ll sci ,L),2mod(l sci -l,L)-1 ⁇ ;
  • ⁇ 1 (l,l sci ) is the index number p (l) of the CSI-RS port corresponding to the vector corresponding to the coefficient in the first group of vectors and the vector corresponding to the strongest coefficient in the first group of vectors
  • the index number of the corresponding CSI-RS port poor function of .
  • P is the port number of the CSI-RS.
  • the precoding matrix indicator includes an indication of strong polarization direction vectors in the first set of vectors, coefficients of strong polarization direction vectors have a higher priority than corresponding weak polarization direction coefficients.
  • whether to omit the coefficients of the vector is determined according to the priority of the coefficients, wherein the configuration information of the channel state information includes the number of coefficients retained in the channel state information after the omission operation is performed ; Or, the configuration information of the channel state information includes the number of coefficients that should be omitted in the omission operation.
  • the number of coefficients retained in the channel state information after the operation is omitted is fixed and has no flexibility.
  • the configuration information of the channel state information is used to configure the coefficients retained in the channel state information after the operation is omitted, which is flexible.
  • the coefficients of the vector determine whether to omit according to the priority of the coefficients, wherein the channel state information includes the number of coefficients retained in the channel state information after the omission operation is performed; or, The channel state information includes the number of coefficients that should be omitted entering an omission operation.
  • the number of coefficients retained in the channel state information after the omission operation is not only flexible, but also adaptable to changes in the resources carrying the channel state information, which can neither waste resources nor ensure Channel state information is transmitted correctly.
  • the polarization direction in which the strongest coefficient of the vector constituting the precoding matrix is located is a strong polarization direction, and the other polarization direction is a weak polarization direction;
  • non-zero coefficient in the direction of weak polarization A nonzero coefficient corresponding to a strong polarization direction That is, the non-zero coefficients in the weak polarization direction and the non-zero coefficients in the strong polarization direction can have a one-to-one correspondence, and each non-zero coefficient in the weak polarization direction can correspond to a non-zero coefficient in the strong polarization direction;
  • the difference between the amplitude of a non-zero coefficient in the weak polarization direction and the amplitude of the corresponding non-zero coefficient in the strong polarization direction is in
  • the precoding matrix indicator includes the difference in the magnitude of a non-zero coefficient in the direction of weak polarization relative to the magnitude of the corresponding non-zero coefficient in the direction of strong polarization where i represents the index number of the coefficient, Indicates the magnitude of the weak polarization direction coefficient, Indicates the magnitude of the strong polarization direction coefficient.
  • a common reference value is used for the magnitudes of all coefficients in the weak polarization direction, and the difference in the magnitudes of coefficients in the weak polarization direction relative to the common reference value is fed back in the precoding indicator.
  • the precoding indicator consists of the difference in magnitude of a non-zero coefficient in the direction of weak polarization relative to the magnitude of the corresponding non-zero coefficient in the direction of strong polarization
  • the precoding indicator consists of the difference in magnitude of a non-zero coefficient in the direction of weak polarization relative to the magnitude of the corresponding non-zero coefficient in the direction of strong polarization
  • the channel state information includes the number of coefficients that need to be reported among the coefficients that make up the vector of the precoding matrix, and whether to indicate the strongest coefficient is determined according to the number of coefficients that need to be reported.
  • the strongest coefficient that is, indicate the position of the strongest coefficient; indicating the position of the strongest coefficient requires some overhead, but the value of the strongest coefficient can take the default value, for example, the default amplitude value is 1, and the phase value is 0, so that There is no need to display feedback to the base station, which can save some overhead. On the whole, adopting the scheme of indicating the location of the strongest coefficient and not displaying the value of the strongest coefficient in feedback does not necessarily save cost.
  • the overhead required to indicate the position of the strongest coefficient can be determined according to the number of coefficients to be reported, for example, the required overhead bits are where K NZ represents the number of coefficients to be reported, log 2 ( ⁇ ) represents the logarithmic operation, Indicates rounding up; so depending on the number of coefficients that need to be reported it can be determined whether reporting the strongest coefficients is a cost-effective solution. For example, if the number of coefficients to be reported is greater than a threshold value, it is determined not to report the position of the strongest coefficient. Alternatively, if the number of coefficients that need to be reported is less than a threshold value, determine the position where the strongest coefficient needs to be reported.
  • whether to indicate the position of the strongest coefficient is determined according to the number of coefficients to be reported and the number of precoding layers. For example, whether to indicate the position of the strongest coefficient is determined according to the ratio of the number of coefficients to be reported to the number of precoding layers. For example, if the ratio of the number of coefficients to be reported to the number of precoding layers is greater than a threshold value, it is determined that the position of the strongest coefficient does not need to be reported. For another example, if the ratio of the number of coefficients to be reported to the number of precoding layers is smaller than a threshold value, the position of the strongest coefficient to be reported is determined. Wherein, the number of precoding layers is also the precoding rank.
  • the channel state information includes the number of coefficients that need to be reported among the coefficients that make up the vector of the precoding matrix, and whether the position of the coefficient that needs to be reported is indicated in a bitmap manner according to the coefficient that needs to be reported The number is determined.
  • the number of coefficients that need to be reported is greater than a threshold, it is determined not to indicate the positions of the coefficients that need to be reported in a bitmap manner. For another example, if the number of coefficients to be reported is less than a threshold value, it is determined to indicate the position of the coefficients to be reported in a bitmap manner.
  • the number of vectors constituting the precoding matrix is large, and the coefficients of the corresponding vectors are also large, so the overhead of feedback coefficient values is also large.
  • the values of some coefficients are fed back, and the values of other parts of the coefficients are not fed back, and the coefficients that need to be fed back are indicated in the form of a bitmap (bitmap).
  • bitmap bitmap
  • feeding back only a part of the coefficient values will save some overhead, but using the bitmap to indicate the coefficients that need to be fed back will cost some overhead, so the scheme that uses the bitmap to indicate the coefficients that need to be fed back may not necessarily save overhead.
  • the corresponding overhead can be calculated according to the number of coefficients to be reported and the bitmap, which is recorded as overhead 1; the overhead of reporting all coefficients without using bitmaps to indicate the coefficients to be reported is recorded as overhead 2; compare overhead 1 with The size of the overhead 2 can determine which scheme saves overhead, thereby determining which scheme to adopt. That is, whether to indicate the positions of the coefficients that need to be reported in a bitmap manner is determined according to the number of the coefficients that need to be reported.
  • whether to indicate the positions of the coefficients to be reported in a bitmap is determined according to the ratio of the number of coefficients to be reported to LM ⁇ .
  • the ratio of the number of coefficients to be reported to LM ⁇ is greater than a threshold value, it is determined not to indicate the position of the coefficients to be reported in a bitmap manner. For another example, if the ratio of the number of coefficients to be reported to LM ⁇ is less than a threshold value, determine the position of the coefficients to be reported in a bitmap manner.
  • bitmapping is used to indicate the coefficients that need to be reported, and the overhead of this scheme is recorded as overhead 1, including the overhead of bitmapping and the overhead of reporting the indicated coefficients; the overhead of bitmapping is LM ⁇ r bits, and the overhead of reporting
  • the overhead of the coefficient is cK NZ bits, and the number of bits of overhead 1 is LM ⁇ r+cK NZ .
  • the bitmap is not used to indicate the coefficients to be reported, but all the coefficients are reported.
  • the overhead of this scheme is recorded as overhead 2, which includes the overhead of reporting all coefficients, and the number of bits of overhead 2 is cLM ⁇ r.
  • r represents the number of layers of precoding, or the rank of precoding
  • c represents the ratio used to feed back the value of a coefficient.
  • the amplitude of a coefficient fed back is 4 bits
  • the phase of a coefficient fed back is 3 bits
  • a coefficient is fed back
  • the value of is 7 bits.
  • the bitmap is used to indicate that the coefficients to be reported are inappropriate.
  • Cost 1 greater than cost 2 is equivalent to LM ⁇ r+cK NZ greater than cLM ⁇ r, equivalent to cK NZ greater than (c-1)LM ⁇ r,
  • whether to indicate the position of the coefficient to be reported in the form of a bitmap is determined according to the number of precoding layers.
  • the ratio of the number of coefficients to be reported to LM ⁇ r is greater than a threshold value, it is determined not to indicate the position of the coefficients to be reported in a bitmap manner.
  • the ratio of the number of coefficients to be reported to LM ⁇ r is less than a threshold value, it is determined to indicate the position of the coefficients to be reported in a bit-mapped manner.
  • the number of reported coefficients is equal to LM ⁇ r, and it is determined not to indicate the positions of the coefficients that need to be reported in a bitmap manner.
  • the positions of the coefficients that need to be reported in a bitmap manner For another example, corresponding to the number of precoding layers being 1, the number of combinations is used to indicate the position of the coefficient to be reported, and the position of the coefficient to be reported is not indicated by a bit map. For another example, corresponding to the number of precoding layers being 1 and the value of M ⁇ being 1, the position of the coefficient to be reported is indicated by the combination number, and the position of the coefficient to be reported is not indicated by the bit map. For example, the position of the coefficient that needs to be reported is indicated by using the combination number method of extracting K NZ coefficients from the coefficients of L vectors.
  • the present application also provides a method for transmitting channel state information.
  • FIG. 2 is a schematic flowchart of a method for transmitting channel state information provided in an embodiment of the present application. The method can be applied to improve channel state information In the case of the accuracy of the represented channel state, the method can be executed by an information transmission device, which can be implemented by software and/or hardware, and integrated on the second communication node, which can be a base station. Please refer to the above-mentioned embodiments for details not yet detailed in this embodiment.
  • the present application provides a channel state information transmission method, including the following steps:
  • the configuration information includes configuration information of channel state information.
  • the second communication node may determine a data transmission strategy based on the channel state information.
  • An embodiment of the present application provides a channel state information transmission method, the method transmits configuration information; obtains the channel state information sent by the first communication node, the channel state information is reported according to the configuration information, and the method transmits the configuration information, Obtaining the channel state information reported based on the configuration information saves overhead, and can determine a data transmission strategy more accurately, thereby improving the efficiency of data transmission.
  • the channel state information includes a precoding matrix indicator, and the precoding matrix indicated by the precoding matrix indicator is determined by the first group of vectors, or determined by the first group of vectors and the second group of vectors;
  • the first group of vectors includes L vectors, and the second group of vectors includes M ⁇ vectors, where L and M ⁇ are positive integers; wherein, a vector in the first group of vectors corresponds to a port of the channel state information reference signal;
  • the configuration information of the channel state information includes the reporting format of the precoding matrix indicator, wherein the reporting format of the precoding matrix indicator indicates at least one of the following information:
  • the channel state information includes reports on the M ⁇ vectors
  • the precoding matrix includes the second set of vectors.
  • the precoding matrix indicator includes coefficients of vectors constituting the precoding matrix, and the priority of the coefficients of the vectors is determined according to at least one of the following methods:
  • the precoding matrix indicator includes the position of the vector corresponding to the strongest coefficient in the second set of vectors, and the priority of the coefficient of the vector is according to the vector corresponding to the coefficient of the vector in the second set of vectors The relative position of the position of the position and the position of the vector corresponding to the strongest coefficient is determined;
  • the precoding matrix indicator includes the position of the vector corresponding to the strongest coefficient in the first set of vectors, and the priority of the coefficient of the vector is according to the position of the corresponding vector of the coefficient of the vector in the first set of vectors Relative position determination of the position of the vector corresponding to said strongest coefficient;
  • the precoding matrix indicator includes an indication of strong polarization direction vectors in the first set of vectors, coefficients of strong polarization direction vectors have a higher priority than corresponding weak polarization direction coefficients.
  • whether to omit the coefficients of the vector is determined according to the priority of the coefficients, wherein the configuration information of the channel state information includes the number of coefficients retained in the channel state information after the omission operation is performed ; Or, the configuration information of the channel state information includes the number of coefficients that should be omitted in the omission operation.
  • the coefficients of the vector determine whether to omit according to the priority of the coefficients, wherein the channel state information includes the number of coefficients retained in the channel state information after the omission operation is performed; or, The channel state information includes the number of coefficients that should be omitted entering an omission operation.
  • the polarization direction in which the strongest coefficient of the vector constituting the precoding matrix is located is a strong polarization direction, and the other polarization direction is a weak polarization direction;
  • the difference between the amplitude of a non-zero coefficient in the weak polarization direction and the amplitude of the corresponding non-zero coefficient in the strong polarization direction is in
  • the precoding matrix indicator includes the difference in the magnitude of a non-zero coefficient in the direction of weak polarization relative to the magnitude of the corresponding non-zero coefficient in the direction of strong polarization where i represents the index number of the coefficient, Indicates the magnitude of the weak polarization direction coefficient, Indicates the magnitude of the strong polarization direction coefficient.
  • the channel state information includes the number of coefficients that need to be reported among the coefficients that make up the vector of the precoding matrix, and whether to indicate the strongest coefficient is determined according to the number of coefficients that need to be reported.
  • the channel state information includes the number of coefficients that need to be reported among the coefficients that make up the vector of the precoding matrix, and whether the position of the coefficient that needs to be reported is indicated in a bitmap manner according to the coefficient that needs to be reported The number is determined.
  • whether to indicate the positions of the coefficients to be reported in a bitmap is determined according to the ratio of the number of coefficients to be reported to LM ⁇ .
  • FIG. 3 is a schematic structural diagram of a channel state information transmission device provided in an embodiment of the present application.
  • the device can be configured in a first communication node, as shown in FIG. 3, the device includes:
  • the first receiving module 31 is configured to receive configuration information of the second communication node
  • the second receiving module 32 is configured to receive the channel state information reference signal sent by the second communication node according to the configuration information
  • the reporting module 33 is configured to report channel state information according to the configuration information, and the channel state information is determined according to the channel state information reference signal;
  • the configuration information includes configuration information of channel state information.
  • the information transmission device provided in this embodiment is used to implement the channel state information transmission method of the embodiment shown in Figure 1.
  • the implementation principle and technical effect of the information transmission device provided in this embodiment are the same as the channel state information transmission of the embodiment shown in Figure 1 The method is similar and will not be repeated here.
  • the channel state information includes a precoding matrix indicator, and the precoding matrix indicated by the precoding matrix indicator is determined by the first group of vectors, or determined by the first group of vectors and the second group of vectors;
  • the first group of vectors includes L vectors, and the second group of vectors includes M ⁇ vectors, where L and M ⁇ are positive integers; wherein, a vector in the first group of vectors corresponds to a port of the channel state information reference signal;
  • the configuration information of the channel state information includes the reporting format of the precoding matrix indicator, wherein the reporting format of the precoding matrix indicator indicates at least one of the following information:
  • the channel state information includes reports on the M ⁇ vectors
  • the precoding matrix includes the second set of vectors.
  • the precoding matrix indicator includes coefficients of vectors constituting the precoding matrix, and the priority of the coefficients of the vectors is determined according to at least one of the following methods:
  • the precoding matrix indicator includes the position of the vector corresponding to the strongest coefficient in the second set of vectors, and the priority of the coefficient of the vector is according to the vector corresponding to the coefficient of the vector in the second set of vectors The relative position of the position of the position and the position of the vector corresponding to the strongest coefficient is determined;
  • the precoding matrix indicator includes the position of the vector corresponding to the strongest coefficient in the first set of vectors, and the priority of the coefficient of the vector is according to the position of the corresponding vector of the coefficient of the vector in the first set of vectors Relative position determination of the position of the vector corresponding to said strongest coefficient;
  • the precoding matrix indicator includes an indication of strong polarization direction vectors in the first set of vectors, coefficients of strong polarization direction vectors have a higher priority than corresponding weak polarization direction coefficients.
  • whether to omit the coefficients of the vector is determined according to the priority of the coefficients, wherein the configuration information of the channel state information includes the number of coefficients retained in the channel state information after the omission operation is performed ; Or, the configuration information of the channel state information includes the number of coefficients that should be omitted in the omission operation.
  • the coefficients of the vector determine whether to omit according to the priority of the coefficients, wherein the channel state information includes the number of coefficients retained in the channel state information after the omission operation is performed; or, The channel state information includes the number of coefficients that should be omitted entering an omission operation.
  • the polarization direction in which the strongest coefficient of the vector constituting the precoding matrix is located is a strong polarization direction, and the other polarization direction is a weak polarization direction;
  • the difference between the amplitude of a non-zero coefficient in the weak polarization direction and the amplitude of the corresponding non-zero coefficient in the strong polarization direction is in
  • the precoding matrix indicator includes the difference in the magnitude of a non-zero coefficient in the direction of weak polarization relative to the magnitude of the corresponding non-zero coefficient in the direction of strong polarization where i represents the index number of the coefficient, Indicates the magnitude of the weak polarization direction coefficient, Indicates the magnitude of the strong polarization direction coefficient.
  • the channel state information includes the number of coefficients that need to be reported among the coefficients that make up the vector of the precoding matrix, and whether to indicate the strongest coefficient is determined according to the number of coefficients that need to be reported.
  • the channel state information includes the number of coefficients that need to be reported among the coefficients that make up the vector of the precoding matrix, and whether the position of the coefficient that needs to be reported is indicated in a bitmap manner according to the coefficient that needs to be reported The number is determined.
  • whether to indicate the positions of the coefficients to be reported in a bitmap is determined according to the ratio of the number of coefficients to be reported to LM ⁇ .
  • FIG. 4 is a schematic structural diagram of an information transmission device provided in the embodiment of the present application.
  • the device is configured in the second communication node, as shown in FIG. 4, the device includes:
  • the transmission module 41 is configured to transmit configuration information
  • An acquisition module 42 configured to acquire channel state information sent by the first communication node, the channel state information being reported according to the configuration information
  • the configuration information includes configuration information of channel state information.
  • the information transmission device provided in this embodiment is used to implement the channel state information transmission method of the embodiment shown in Figure 2.
  • the implementation principle and technical effect of the information transmission device provided in this embodiment are similar to the channel state information transmission method of the embodiment shown in Figure 2 , which will not be repeated here.
  • the channel state information includes a precoding matrix indicator, and the precoding matrix indicated by the precoding matrix indicator is determined by the first group of vectors, or determined by the first group of vectors and the second group of vectors;
  • the first group of vectors includes L vectors, and the second group of vectors includes M ⁇ vectors, where L and M ⁇ are positive integers; wherein, a vector in the first group of vectors corresponds to a port of the channel state information reference signal;
  • the configuration information of the channel state information includes the reporting format of the precoding matrix indicator, wherein the reporting format of the precoding matrix indicator indicates at least one of the following information:
  • the channel state information includes reports on the M ⁇ vectors
  • the precoding matrix includes the second set of vectors.
  • the precoding matrix indicator includes coefficients of vectors constituting the precoding matrix, and the priority of the coefficients of the vectors is determined according to at least one of the following methods:
  • the precoding matrix indicator includes the position of the vector corresponding to the strongest coefficient in the second set of vectors, and the priority of the coefficient of the vector is according to the vector corresponding to the coefficient of the vector in the second set of vectors The relative position of the position of the position and the position of the vector corresponding to the strongest coefficient is determined;
  • the precoding matrix indicator includes the position of the vector corresponding to the strongest coefficient in the first set of vectors, and the priority of the coefficient of the vector is according to the position of the corresponding vector of the coefficient of the vector in the first set of vectors Relative position determination of the position of the vector corresponding to said strongest coefficient;
  • the precoding matrix indicator includes an indication of strong polarization direction vectors in the first set of vectors, coefficients of strong polarization direction vectors have a higher priority than corresponding weak polarization direction coefficients.
  • whether to omit the coefficients of the vector is determined according to the priority of the coefficients, wherein the configuration information of the channel state information includes the number of coefficients retained in the channel state information after the omission operation is performed ; Or, the configuration information of the channel state information includes the number of coefficients that should be omitted in the omission operation.
  • the coefficients of the vector determine whether to omit according to the priority of the coefficients, wherein the channel state information includes the number of coefficients retained in the channel state information after the omission operation is performed; or, The channel state information includes the number of coefficients that should be omitted entering an omission operation.
  • the polarization direction in which the strongest coefficient of the vector constituting the precoding matrix is located is a strong polarization direction, and the other polarization direction is a weak polarization direction;
  • the difference between the amplitude of a non-zero coefficient in the weak polarization direction and the amplitude of the corresponding non-zero coefficient in the strong polarization direction is in
  • the precoding matrix indicator includes the difference in the magnitude of a non-zero coefficient in the direction of weak polarization relative to the magnitude of the corresponding non-zero coefficient in the direction of strong polarization where i represents the index number of the coefficient, Indicates the magnitude of the weak polarization direction coefficient, Indicates the magnitude of the strong polarization direction coefficient.
  • the channel state information includes the number of coefficients that need to be reported among the coefficients that make up the vector of the precoding matrix, and whether to indicate the strongest coefficient is determined according to the number of coefficients that need to be reported.
  • the channel state information includes the number of coefficients that need to be reported among the coefficients that make up the vector of the precoding matrix, and whether the position of the coefficient that needs to be reported is indicated in a bitmap manner according to the coefficient that needs to be reported The number is determined.
  • whether to indicate the positions of the coefficients to be reported in a bitmap is determined according to the ratio of the number of coefficients to be reported to LM v .
  • the present application provides a communication node
  • FIG. 5 is a schematic structural diagram of a communication node provided in an embodiment of the present application.
  • the communication node implements the channel state information transmission method as shown in Figure 1
  • the communication node is the first communication node
  • the communication node implements the channel state information transmission method as shown in Figure 2
  • the communication node is the second communication node.
  • the communication node provided by the present application includes one or more processors 51 and storage devices 52; there may be one or more processors 51 in the communication node, and one processor 51 is used in Figure 5 as Example; the storage device 52 is used to store one or more programs; the one or more programs are executed by the one or more processors 51, so that the one or more processors 51 realize the The channel state information transmission method.
  • the communication node also includes: a communication device 53 , an input device 54 and an output device 55 .
  • the processor 51, the storage device 52, the communication device 53, the input device 54 and the output device 55 in the communication node may be connected through a bus or in other ways. In FIG. 5, connection through a bus is taken as an example.
  • the input device 54 can be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the communication node.
  • the output device 55 may include a display device such as a display screen.
  • the communication device 53 may include a receiver and a transmitter.
  • the communication device 53 is configured to perform information sending and receiving communication according to the control of the processor 51 .
  • Information includes, but is not limited to, configuration information and channel state information.
  • the storage device 52 can be configured to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the channel state information transmission method described in the embodiment of the present application (for example, channel state information The first receiving module 31, the second receiving module 32, and the reporting module 33 in the transmission device; another example, the transmission module 41 and the acquisition module 42 in the channel state information transmission device).
  • the storage device 52 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the communication node, and the like.
  • the storage device 52 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices.
  • the storage device 52 may further include memories that are remotely located relative to the processor 51, and these remote memories may be connected to the communication node through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the embodiment of the present application also provides a storage medium, the storage medium stores a computer program, and when the computer program is executed by a processor, any method described in the present application is implemented, the storage medium stores a computer program, and the computer When the program is executed by the processor, the channel state information transmission method described in any one of the embodiments of the present application is realized.
  • the channel state information transmission method applied to the first communication node and the channel state information transmission method applied to the second communication node wherein the channel state information transmission method applied to the first communication node includes: receiving the configuration of the second communication node information;
  • the configuration information includes configuration information of channel state information.
  • the channel state information transmission method applied to the second communication node includes: transmitting configuration information
  • the configuration information includes configuration information of channel state information.
  • the computer storage medium in the embodiments of the present application may use any combination of one or more computer-readable media.
  • the computer readable medium may be a computer readable signal medium or a computer readable storage medium.
  • a computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: electrical connections with one or more conductors, portable computer disks, hard disks, Random Access Memory (RAM), read-only memory (Read Only Memory, ROM), Erasable Programmable Read Only Memory (EPROM), flash memory, optical fiber, portable CD-ROM, optical storage device, magnetic storage device, or any suitable combination of the above .
  • a computer readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device.
  • a computer readable signal medium may include a data signal carrying computer readable program code in baseband or as part of a carrier wave. Such propagated data signals may take many forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • a computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. .
  • Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wires, optical cables, radio frequency (Radio Frequency, RF), etc., or any suitable combination of the above.
  • any appropriate medium including but not limited to: wireless, wires, optical cables, radio frequency (Radio Frequency, RF), etc., or any suitable combination of the above.
  • Computer program code for performing the operations of the present application may be written in one or more programming languages or combinations thereof, including object-oriented programming languages—such as Java, Smalltalk, C++, and conventional Procedural Programming Language - such as "C" or a similar programming language.
  • the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server.
  • the remote computer may be connected to the user computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (such as through an Internet connection using an Internet service provider). ).
  • LAN local area network
  • WAN wide area network
  • Internet service provider such as AT&T, MCI, Sprint, EarthLink, MSN, GTE, etc.
  • terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.
  • the various embodiments of the present application can be implemented in hardware or special purpose circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software, which may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.
  • Computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages source or object code.
  • ISA Instruction Set Architecture
  • Any logic flow block diagrams in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions.
  • Computer programs can be stored on memory.
  • the memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to Read-Only Memory (ROM), Random Access Memory (RAM), Optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disk (CD)), etc.
  • Computer readable media may include non-transitory storage media.
  • Data processors can be of any type suitable for the local technical environment, such as but not limited to general purpose computers, special purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC ), programmable logic devices (Field-Programmable Gate Array, FGPA), and processors based on multi-core processor architectures.
  • DSP Digital Signal Processing
  • ASIC Application Specific Integrated Circuit
  • FGPA programmable logic devices
  • processors based on multi-core processor architectures such as but not limited to general purpose computers, special purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC ), programmable logic devices (Field-Programmable Gate Array, FGPA), and processors based on multi-core processor architectures.
  • DSP Digital Signal Processing
  • ASIC Application Specific Integrated Circuit
  • FGPA programmable logic devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请提出了一种信道状态信息传输方法、装置、通信节点及存储介质，所述方法应用于第一通信节点，所述方法包括：接收第二通信节点的配置信息；根据所述配置信息接收所述第二通信节点发送的信道状态信息参考信号；根据所述配置信息报告信道状态信息，所述信道状态信息根据所述信道状态信息参考信号确定；其中，所述配置信息包括信道状态信息的配置信息。

Description

信道状态信息传输方法、装置、通信节点及存储介质 技术领域
本申请涉及通信技术领域，例如涉及一种信道状态信息传输方法、装置、通信节点及存储介质。
背景技术
无线通信系统中基站数据传输时的传输策略取决于信道状态信息。基站基于接收的信道状态信息所代表的信道状态确定数据传输的策略，并传输数据，从而提高数据传输的效率。其中，信道状态信息所代表的信道状态的精准程度影响基站的传输策略，从而影响数据传输的效率。另一方面，反馈信道状态信息的资源有限，需要节省反馈开销。
故，如何节省反馈开销并提高信道状态信息所代表的信道状态的精确度是当前亟待解决的技术问题。
发明内容
本申请提供一种信道状态信息传输方法、装置、通信节点及存储介质，有效提高了信道状态信息所代表的信道状态的精确度，并节省了反馈开销。
第一方面，本申请实施例提供了一种信道状态信息传输方法，应用于第一通信节点，所述方法包括：
接收第二通信节点的配置信息；
根据所述配置信息接收所述第二通信节点发送的信道状态信息参考信号；
根据所述配置信息报告信道状态信息，所述信道状态信息根据所述信道状态信息参考信号确定；
其中，所述配置信息包括信道状态信息的配置信息。
第二方面，本申请实施例提供了一种信道状态信息传输方法，应用于第二通信节点，所述方法包括：
传输配置信息；
获取第一通信节点发送的信道状态信息，所述信道状态信息根据所述配置信息报告；
其中，所述配置信息包括信道状态信息的配置信息。
第三方面，本申请实施例提供了一种信息传输装置，配置于第一通信节点，所述装置包括：
第一接收模块，设置为接收第二通信节点的配置信息；
第二接收模块，设置为根据所述配置信息接收所述第二通信节点发送的信道状态信息参考信号；
报告模块，设置为根据所述配置信息报告信道状态信息，所述信道状态信息根据所述信道状态信息参考信号确定；
其中，所述配置信息包括信道状态信息的配置信息。
第四方面，本申请实施例提供了一种信息传输装置，配置于第二通信节点，所述装置包括：
传输模块，设置为传输配置信息；
获取模块，设置为获取第一通信节点发送的信道状态信息，所述信道状态信息根据所述配置信息报告；
其中，所述配置信息包括信道状态信息的配置信息。
第五方面，本申请实施例提供了一种通信节点，包括：
一个或多个处理器；
存储装置，用于存储一个或多个程序；
当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如本申请实施例提供的信道状态信息传输方法。
第六方面，本申请实施例提供了一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现本申请实施例中的任意一种信道状态信息传输方法。
关于本申请的以上实施例和其他方面以及其实现方式，在附图说明、具体实施方式和权利要求中提 供更多说明。
附图说明
图1为本申请实施例提供的一种信道状态信息传输方法的流程示意图；
图2为本申请实施例提供的一种信道状态信息传输方法的流程示意图；
图3为本申请实施例提供的一种信息传输装置的结构示意图；
图4为本申请实施例提供的一种信息传输装置的结构示意图；
图5为本申请实施例提供的一种通信节点的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚明白，下文中将结合附图对本申请的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机系统中执行。并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
在一个示例性实施方式中，图1为本申请实施例提供的一种信道状态信息传输方法的流程示意图，该方法可以适用于提高信道状态信息所代表的信道状态的精确度的情况，该方法可以由信息传输装置执行，该装置可以由软件和/或硬件实现，并集成在第一通信节点上，第一通信节点可以为终端，如用户设备。
无线通信发展到第5代通信技术。其中，第4代无线通信技术中的长期演进(Long Term Evolution，LTE)技术与第5代无线通信技术中的新无线(New Radio，NR)技术是基于正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)的技术；在OFDM技术中，最小的频域单元为子载波，最小的时域单元为OFDM符号；为了方便使用频域资源，定义了资源块(Resource Block，RB)，一个资源块定义为特定数目的连续子载波；又定义了带宽块(Bandwidth part，BWP)，一个带宽块定义为一个载波上又一特定数目的连续资源块；为了方便使用时域资源，定义了时隙(slot)，一个时隙定义为又一特定数目的连续OFDM符号。无线通信系统中获取信道状态信息的方法，及利用信道状态信息的方法如下：
基站发送参考信号；终端测量参考信号，确定基站到终端的信道状态信息，并报告信道状态信息给基站；基站接收终端报告的信道状态信息。基站根据所接收的信道状态信息所代表的信道状态确定数据传输的策略，并传输数据，从而提高数据传输的效率。信道状态信息所代表的信道状态的精准程度影响到基站的传输策略，从而影响到数据传输的效率。
无线通信技术的发展需要进一步设计获取信道状态信息的机制，以提高所获得的信道状态的精确度，增加获取信道状态信息的灵活性，并减小所使用的资源开销，降低系统的复杂度。
基站发送给终端的参考信号为下行参考信号；在LTE系统中用于信道状态信息的下行参考信号包括小区特定参考信号(Cell-specific Reference Signal，CRS)，信道状态信息参考信号(Channel-State Information Reference Signal，CSI-RS)；在NR系统中用于信道状态信息的下行参考信号包括信道状态信息参考信号(Channel-State Information Reference Signal，CSI-RS)。信道状态信息参考信号(CSI-RS)由信道状态信息参考信号资源(CSI-RS Resource)承载，信道状态信息参考信号资源由码分复用(Code Division Multiplexing，CDM)组组成，一个CDM组是由无线资源元素组成，一组CSI-RS端口的CSI-RS在其上通过码分复用的方式复用。
基站与终端之间传输的信道状态信息的内容包括信道质量指示符(Channel quality indicator，CQI)，用以指示信道的质量；或者包括预编码矩阵指示符(Precoding Matrix Indicator，PMI)，用以指示应用于基站天线上的预编码矩阵。一类CQI的报告格式为宽带CQI报告(wideband CQI reporting)，即为信道状态信息频带(CSI reporting band)报告一个信道质量，该信道质量对应整个所述信道状态信息频带；另一类CQI的报告格式为子带CQI报告(subband CQI reporting)，即对信道状态信息频带(CSI reporting band)以子带为单位分别给出信道质量，其中一个信道质量对应一个子带，即为信道状态信息频带的每一个子带报告一个 信道质量。所述的子带是频域单位，定义为N个连续的资源块(Resource Block，RB)，N为正整数；为了便于描述，本申请称为信道质量指示子带，或者CQI子带，或者子带；其中，N称为CQI子带的尺码(size)，或者称为CQI子带尺码，或者称为子带尺码(size)。带宽块划分为子带，信道状态信息频带(CSI reporting band)用带宽块的子带的子集进行定义。信道状态信息频带(CSI reporting band)是其上的信道状态信息需要被报告的频带。
一种确定信道质量的方式是根据终端接收到参考信号的强度确定；另一种确定信道质量的方式是根据接收到参考信号的信干噪比确定。在信道状态信息频带上，如果信道质量变化不大，以宽带CQI报告方式报告CQI可以减小用于CQI报告的资源开销；如果信道质量在频域上差异较大，以子带CQI报告方式报告CQI可以增加CQI报告的精准程度。
一类PMI的报告格式为宽带PMI报告，即为信道状态信息频带(CSI reporting band)报告一个PMI，该PMI对应整个所述信道状态信息频带。另一类PMI的报告格式为子带PMI报告，即为信道状态信息频带的每一个子带报告一个PMI，或者为信道状态信息频带的每一个子带报告一个PMI的组成部分。例如，PMI由X1与X2组成，为信道状态信息频带的每一个子带报告一个PMI的组成部分的一个方式为，为整个频带报告一个X1，为每一个子带报告一个X2；另一个方式为，为每一个子带报告一个X1与一个X2。
又一类PMI的报告格式为，所报告的PMI为每个子带指示R个预编码矩阵，其中R为正整数。从反馈预编码矩阵的频域颗粒度的意义上讲，R又表示每个子带包括的预编码矩阵子带的数目，或者每个CQI子带包括的预编码矩阵子带的数目。
为了提高信道状态信息所代表的信道状态的精确度，并节省了反馈开销，如图1所示，本申请实施例提供了一种信道状态信息传输方法，该方法包括如下步骤：
S110、接收第二通信节点的配置信息。
所述配置信息包括信道状态信息的配置信息。配置信息还可以包括信道状态信息参考信号的配置信息。第一通信节点可以基于信道状态信息的配置信息报告信道状态信息，基于信道状态信息参考信号的配置信息接收并测量信道状态信息参考信号。
本实施例不对信道状态信息的配置信息所包括的内容进行限定。在一个实施例中，信道状态信息的配置信息可以包括预编码矩阵指示符的报告格式，此处不对预编码矩阵指示符的报告格式所指示的信息进行限定。
S120、根据所述配置信息接收所述第二通信节点发送的信道状态信息参考信号。
在接收信道状态信息参考信号后，本实施例可以对信道状态信息参考信号进行测量，以确定信道状态信息。
S130、根据所述配置信息报告信道状态信息，所述信道状态信息根据所述信道状态信息参考信号确定。
在确定信道状态信息后，本步骤可以根据信道状态信息的配置信息向第二通信节点报告信道状态信息。
在一个实施例中，所述信道状态信息包括预编码矩阵指示符，所述预编码矩阵指示符所指示预编码矩阵由第一组矢量确定，或由第一组矢量与第二组矢量确定；第一组矢量包含L个矢量，第二组矢量包含M ν个矢量，其中L、M ν为正整数；其中，第一组矢量中的一个矢量对应所述信道状态信息参考信号的一个端口；第二组矢量中的一个矢量为索引号为
Figure PCTCN2022089804-appb-000001
的离散傅里叶变换(Discrete Fourier Transform，DFT)矢量；其中，索引号为
Figure PCTCN2022089804-appb-000002
的DFT矢量的元素为：
Figure PCTCN2022089804-appb-000003
其中t＝{0,1...,N 3-1}，N 3是所述预编码矩阵的数量。
其中，t是DFT矢量中元素的索引号，取值为0,1...,N 3-1。t也可以代表预编码矩阵的索引号。t也可以代表频域单元的索引号，t的一个取值与一个频域单元相对应。例如，第二组矢量中的DFT矢量的索引号为t的元素对应的索引号为t的预编码矩阵是索引号为t的频域单元的预编码矩阵。
预编码矩阵可以仅由第一组矢量组成，也可以由第一组矢量与第二组矢量组成。
在一个实施例中，预编码矩阵仅由第一组矢量组成，示例如：W＝W 1W 2，其中W表示预编码矩阵，W 1表示由第一组矢量构成的矩阵，W 2表示由第一组矢量的系数构成的矩阵。
在一个实施例中，预编码矩阵由第一组矢量与第二组矢量组成，示例如：
Figure PCTCN2022089804-appb-000004
其中W表示预编码矩阵，W 1表示由第一组矢量构成的矩阵，W f表示第二组矢量构成的矩阵，W f H表示W f的转置共轭矩阵，W 2表示由第一组矢量与第二矢量的联合的系数构成的矩阵。
第二通信节点可以通过信道状态信息的配置信息来指示，预编码矩阵仅由第一组矢量组成，还是预编码矩阵由第一组矢量与第二组矢量组成。即，第二通信节点可以通过信道状态信息的配置信息来指示预编码矩阵是否包括第二组矢量。
在一个实施例中，预编码指示符包括组成预编码矩阵的矢量的系数，组成预编码矩阵的矢量的系数可以根据对应的优先级确定是否省略。
在一个实施例中，组成预编码矩阵的矢量的最强系数所在的极化方向可以为强极化方向，另一个极化方向为弱极化方向。所述预编码矩阵包括两个极化方向，除强极化方向之外的另一个极化方向为弱极化方向。
在一个实施例中，所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否指示最强系数根据所述需要报告的系数的数目确定。是否以位映射的方式指示需要报告的系数的位置根据所述需要报告的系数的数目确定。
本申请提供的一种信道状态信息传输方法，接收第二通信节点的配置信息；根据所述配置信息接收所述第二通信节点发送的信道状态信息参考信号；根据所述配置信息报告信道状态信息，所述信道状态信息根据所述信道状态信息参考信号确定；其中，所述配置信息包括信道状态信息的配置信息。该方法直接基于配置信息确定并报告信道状态信息节省了反馈开销，并能够更加准确的确定信道状态，从而便于第二通信节点做出准确地传输策略，进而提高了数据传输的效率。
在上述实施例的基础上，提出了上述实施例的变型实施例，在此需要说明的是，为了使描述简要，在变型实施例中仅描述与上述实施例的不同之处。
在一个实施例中，所述信道状态信息的配置信息包括所述预编码矩阵指示符的报告格式，其中所述预编码矩阵指示符的报告格式指示以下信息至少之一：
M ν的值，或M ν的值的范围；
信道状态信息中是否包括对所述M ν个矢量的报告；
预编码矩阵是否包括第二组矢量。
所述预编码矩阵指示符的报告格式指示以下信息至少之一：
M ν的值；信道状态信息中是否包括对所述M ν个矢量的报告；预编码矩阵是否包括第二组矢量。
所述预编码矩阵指示符的报告格式指示以下信息至少之一：
M ν的值的范围；信道状态信息中是否包括对所述M ν个矢量的报告；预编码矩阵是否包括第二组矢量。
信道状态信息的配置信息中包括PMI的报告格式，PMI的报告格式指示预编码矩阵是否包括第二组矢量。即，PMI的报告格式指示预编码矩阵仅由第一组矢量组成，还是预编码矩阵由第一组矢量与第二组矢量组成。例如，PMI的报告格式为宽带PMI报告对应指示预编码矩阵不包括第二组矢量，或者指示预编码矩阵仅由第一组矢量组成。PMI的报告格式为子带PMI报告对应指示预编码矩阵包括第二组矢量，或者指示预编码矩阵由第一组矢量与第二组矢量组成。采用PMI报告格式隐式地指示预编码(即预编码矩阵)的组成，可以不用再增加信令指示预编码矩阵的组成，以节省信令开销，提高系统效率。
预编码矩阵包括第二组矢量，第二通信节点可以通过信道状态信息的配置信息来指示M ν的值，或M ν的值的范围。信道状态信息的配置信息中包括PMI的报告格式，PMI的报告格式指示M ν的值，或M ν的值的范围。例如，PMI的报告格式为宽带PMI报告对应指示M ν的值为1。例如，PMI的报告格式 为子带PMI报告对应指示M ν的值为2，或者指示M ν的值大于1。采用PMI报告格式隐式地指示M ν的值，或M ν的值的范围，可以不用再增加信令指示M ν的值，或M ν的值的范围，以节省信令开销，提高系统效率。
存在第一通信节点是否报告第二组矢量问题，即存在信道状态信息中是否包括对所述M ν个矢量的报告问题。例如，预编码矩阵仅由第一组矢量组成，第一通信节点不需要报告第二组矢量；预编码矩阵由第一组矢量与第二组矢量组成，第一通信节点需要报告第二组矢量。再例如，预编码矩阵包括第二组矢量，第二组矢量预先由协议确定，第一通信节点不需要报告第二组矢量；第二组矢量未预先确定，终端(即第一通信节点)需要报告第二组矢量。例如，M ν的值为1，第二组矢量是元素全为1的一个矢量，终端不需要报告第二组矢量；M ν的值为2，或者大于1，第二组矢量未预先确定，终端需要报告第二组矢量。基站(即第二通信节点)可以通过信道状态信息的配置信息指示是否报告第二组矢量。信道状态信息的配置信息中包括PMI的报告格式，PMI的报告格式指示是否报告第二组矢量。例如，PMI的报告格式为宽带PMI报告对应指示终端不报告第二组矢量。例如，PMI的报告格式为子带PMI报告对应指示终端报告第二组矢量。采用PMI报告格式隐式地指示是否报告第二组矢量，可以不用再增加信令指示是否报告第二组矢量，以节省信令开销，提高系统效率。
在一个实施例中，所述预编码矩阵指示符包括组成所述预编码矩阵的矢量的系数，所述矢量的系数的优先级根据下述方式至少之一确定：
所述预编码矩阵指示符包括最强系数在所述第二组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
预编码矩阵指示符包括最强系数在所述第一组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
所述矢量的系数在所述第二组矢量中所对应矢量的索引号越小，所述矢量的系数的优先级越高，或者所述矢量的系数在所述第二组矢量中所对应矢量的索引号越大，所述矢量的系数的优先级越低；
所述预编码矩阵指示符包括对所述第一组矢量中强极化方向矢量的指示，强极化方向矢量的系数的优先级高于对应弱极化方向系数的优先级。
信道状态信息包括预编码指示符，又称预编码矩阵指示符，预编码指示符包括矢量(即组成所述预编码矩阵的矢量)的系数，通常会遇到反馈信道状态信息的资源不足以反馈原计划报告的信道状态信息内容，需要省略掉一部分矢量的系数。例如，在原资源上增加新的反馈报告任务，会导致没有足够的资源反馈原计划报告的信道状态信息内容。再例如，因为原计划承载反馈报告的资源的信道的发生变化，对应资源的信道容量减少，不足以承载原计划报告的信道状态信息内容。省略掉一部分矢量系数的一个方法就是按照系数的优先级的高低，省略掉低优先级的系数，保留高优先级的系数。因此，需要确定优先级的方法或方式。
此处不对省略的低优先级的系数中所述的低优先级和保留高优先级的系数中所述的高优先级进行限定，示例性的，可以通过阈值确定，也可以通过需要省略的系数的数目确定，还可以通过需要保留的系数的数目确定。
其中，最强系数是所述系数中幅度值最大的系数，或者功率最高的系数。
一个确定矢量系数优先级的方式为，预编码指示符包括最强系数在第二组矢量中所对应矢量的位置，所述系数的优先级根据所述系数在第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定。
一个举例如下，所述最强系数在第二组矢量中所对应矢量的位置是最强系数在第二组矢量中所对应矢量的索引号，组成所述预编码矩阵的矢量的系数在第二组矢量中所对应矢量的位置是系数在第二组矢量中所对应矢量的索引号。例如，最强系数在第二组矢量中所对应矢量的位置是最强系数在第二组矢量中所对应矢量的参数f的值；组成所述预编码矩阵的矢量的系数在第二组矢量中所对应矢量的位置是系 数在第二组矢量中所对应的矢量的参数f的值。
另一个举例如下，所述最强系数在第二组矢量中所对应矢量的位置是最强系数在第二组矢量中所对应矢量在DFT矢量中的索引号，组成所述预编码矩阵的矢量的系数在第二组矢量中所对应矢量的位置是系数在第二组矢量中所对应的矢量在DFT矢量中的索引号。例如，最强系数在第二组矢量中所对应矢量的位置是最强系数在第二组矢量中所对应矢量的参数
Figure PCTCN2022089804-appb-000005
的值；组成所述预编码矩阵的矢量的系数在第二组矢量中所对应矢量的位置是所述系数在第二组矢量中所对应的矢量的参数
Figure PCTCN2022089804-appb-000006
的值。
组成所述预编码矩阵的矢量的系数在第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置的一个举例为，系数(组成预编码矩阵的矢量的系数中的任一系数)在第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的差，或者为系数(组成预编码矩阵的矢量的系数中的任一系数)在第二组矢量中所对应矢量的位置减去所述最强系数对应矢量的位置的差，或者为所述最强系数对应矢量的位置减去系数(组成预编码矩阵的矢量的系数中的任一系数)在第二组矢量中所对应矢量的位置的差。
组成所述预编码矩阵的矢量的系数在第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置的另一个举例为，组成所述预编码矩阵的矢量的系数在第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的差的绝对值。
组成所述预编码矩阵的矢量的系数的优先级根据系数在第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定，一例子为，所述相对位置的值越大，所述的优先级越低；或者，所述相对位置的值越小，所述优先级越高。从而把能量大的成分保留住，能量低的成分省略掉，所反馈的预编码矩阵就越接近信道，按照此预编码发射的信号的接收能量最大。有利于提高信噪比，提高通信的容量。
组成所述预编码矩阵的矢量的系数的优先级根据系数在第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定，另一例子为，所述相对位置的值越大，所述的优先级越高；或者，所述相对位置的值越小，所述优先级越低。从而把能量大的成分省略掉，把能量小的成分保留集，所反馈的预编码矩阵就越接近信道的零空间，按照此预编码矩阵发射的信号的接收能量可以尽可能小。从而可以减少按此预编码矩阵发射的信号对接收端的干扰，有利于减少干扰提高信噪比，提高通信的容量。
例如，组成所述预编码矩阵的矢量的系数的优先级根据系数的优先级值确定，系数的优先级值越小该系数的优先级越高，或者，系数的优先级值越大该系数的优先级越低；系数的优先级值根据该系数在第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；所述相对位置的值越大，所述的优先级值越大；或者，所述相对位置的值越小，所述优先级值越小。
例如，系数的优先级值为：Pri(l,i,f)＝L·ν·π 2(f,f sci)+ν·i+l；其中，l为第一组矢量中的矢量的索引号，i为层的索引号，f为第二组矢量中的矢量的索引号，ν为层的数目，即秩；Pri(l,i,f)为第i层中索引号为l的第一组矢量中的矢量及索引号为f的第二组矢量中的矢量的联合系数的优先级值；f sci为最强系数在第二组矢量中所对应矢量的索引号，π 2(f,f sci)为所述系数在第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置。
另一个确定矢量系数优先级的方式为，预编码指示符包括最强系数在第一组矢量中所对应矢量的位置，组成所述预编码矩阵的矢量的系数的优先级根据系数在第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定。
一个举例如下，所述最强系数在第一组矢量中所对应矢量的位置是最强系数在第一组矢量中所对应矢量的索引号，组成所述预编码矩阵的矢量的系数在第一组矢量中所对应矢量的位置是系数在第一组矢量中所对应的矢量的索引号。例如，最强系数在第一组矢量中所对应矢量的位置是最强系数在第一组矢量中所对应矢量的参数l的值；组成所述预编码矩阵的矢量的系数在第一组矢量中所对应矢量的位置是该系数在第一组矢量中所对应的矢量的参数l的值。
另一个举例如下，所述最强系数在第一组矢量中所对应矢量的位置是最强系数在第一组矢量中所对应矢量所对应的CSI-RS端口的索引号，所述系数在第一组矢量中所对应矢量的位置是所述系数在第一组 矢量中所对应的矢量所对应的CSI-RS端口的索引号。例如，所述优先级值最强系数在第一组矢量中所对应矢量的位置是最强系数在第一组矢量中所对应矢量所对应的CSI-RS端口的索引号；组成所述预编码矩阵的矢量的系数在第一组矢量中所对应矢量的位置是所述系数在第一组矢量中所对应矢量所对应的CSI-RS端口的索引号。
组成所述预编码矩阵的矢量的系数在第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置的一个举例为，系数(组成预编码矩阵的矢量的系数中的任一系数)在第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的差，或者为系数(组成预编码矩阵的矢量的系数中的任一系数)在第一组矢量中所对应矢量的位置减去所述最强系数对应矢量的位置的差，或者为所述最强系数对应矢量的位置减去系数(组成预编码矩阵的矢量的系数中的任一系数)在第一组矢量中所对应矢量的位置的差。组成所述预编码矩阵的矢量的系数在第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置的另一个举例为，系数(组成预编码矩阵的矢量的系数中的任一系数)在第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的差的绝对值。
组成所述预编码矩阵的矢量的系数的优先级根据所述系数在第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定，一例子为，所述相对位置的值越大，所述的优先级越低；或者，所述相对位置的值越小，所述优先级越高。从而把能量大的成分保留住，能量低的成分省略掉，所反馈的预编码矩阵就越接近信道，按照此预编码发射的信号的接收能量最大。有利于提高信噪比，提高通信的容量。
组成所述预编码矩阵的矢量的系数的优先级根据所述系数在第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定，另一例子为，所述相对位置的值越大，所述的优先级越高；或者，所述相对位置的值越小，所述优先级越低。从而把能量大的成分省略掉，把能量小的成分保留集，所反馈的预编码矩阵就越接近信道的零空间，按照此预编码矩阵发射的信号的接收能量可以尽可能小。从而可以减少按此预编码发射的信号对接收端的干扰，有利于减少干扰提高信噪比，提高通信的容量。
例如，组成所述预编码矩阵的矢量的系数的优先级根据所述系数的优先级值确定，系数的优先级值越小所述系数的优先级越高，或者，系数的优先级值越大所述系数的优先级越低；系数的优先级值根据所述系数在第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；所述相对位置的值越大，所述的优先级值越大；或者，所述相对位置的值越小，所述优先级值越小。
例如，系数的优先级值为：Pri(l,i,f)＝L·ν·f+ν·i+π 1(l,l sci)；其中，l为第一组矢量中的矢量的索引号，i为层的索引号，f为第一组矢量中的矢量的索引号，ν为层的数目，即秩；Pri(l,i,f)为第i层中索引号为l的第一组矢量中的矢量及索引号为f的第一组矢量中的矢量的联合系数的优先级值；l sci为最强系数在第一组矢量中所对应矢量的索引号，π 1(l,l sci)为所述系数在第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置。
另一个例子，组成所述预编码矩阵的矢量的系数的优先级根据下述方式确定：
预编码指示符包括最强系数在第二组矢量中所对应矢量的位置，最强系数在第一组矢量中所对应矢量的位置；组成所述预编码矩阵的矢量的系数的优先级根据组成所述预编码矩阵的矢量的系数在第二组矢量中所对应矢量的位置与所述最强系数在第二组矢量中所对应矢量的位置的相对位置以及组成所述预编码矩阵的矢量的系数在第一组矢量中所对应矢量的位置与所述最强系数在第一组矢量中所对应矢量的位置的相对位置联合确定。
例如，组成所述预编码矩阵的矢量的系数的优先级根据所述系数的优先级值确定，系数的优先级值越小所述系数的优先级越高，或者，系数的优先级值越大所述系数的优先级越低；所述系数的优先级值根据所述系数在第二组矢量中所对应矢量的位置与所述最强系数在第二组矢量中所对应矢量的位置的相对位置以及所述系数在第一组矢量中所对应矢量的位置与所述最强系数在第一组矢量中所对应矢量的位置的相对位置联合确定。
例如，系数的优先级值为：Pri(l,i,f)＝L·ν·π 2(f,f sci)+ν·i+π 1(l,l sci)；其中，l为第一组矢量中的矢量的索引号，i为层的索引号，f为第一组矢量中的矢量的索引号，ν为层的数目，即秩； Pri(l,i,f)为第i层中索引号为l的第一组矢量中的矢量及索引号为f的第一组矢量中的矢量的联合系数的优先级值；l sci为最强系数在第一组矢量中所对应矢量的索引号，π 1(l,l sci)为所述系数在第一组矢量中所对应矢量的位置与所述最强系数在第一组矢量中所对应矢量的位置的相对位置；f sci为最强系数在第二组矢量中所对应矢量的索引号，π 2(f,f sci)为所述系数在第二组矢量中所对应矢量的位置与所述最强系数在第二组矢量中所对应矢量的位置的相对位置。
另一个例子，组成所述预编码矩阵的矢量的系数的优先级根据下述方式确定：
组成所述预编码矩阵的矢量的系数在第二组矢量中所对应矢量的索引号越小优先级越高，或者组成所述预编码矩阵的矢量的系数在第二组矢量中所对应矢量的索引号越大优先级越低。
例如，组成所述预编码矩阵的矢量的系数的优先级根据所述系数的优先级值确定，系数的优先级值越小所述系数的优先级越高，或者，系数的优先级值越大所述系数的优先级越低；所述系数在第二组矢量中所对应矢量的索引号越小优先级值越小，或者所述系数在第二组矢量中所对应矢量的索引号越大优先级值越大。
例如，系数的优先级值为：Pri(l,i,f)＝L·ν·f+ν·i+l；或者Pri(l,i,f)＝L·ν·f+ν·i+π 1(l,l sci)；其中，其中，l为第一组矢量中的矢量的索引号，i为层的索引号，f为第一组矢量中的矢量的索引号，ν为层的数目，即秩；Pri(l,i,f)为第i层中索引号为l的第一组矢量中的矢量及索引号为f的第一组矢量中的矢量的联合系数的优先级值；l sci为最强系数在第一组矢量中所对应矢量的索引号，π 1(l,l sci)为所述系数在第一组矢量中所对应矢量的位置与所述最强系数在第一组矢量中所对应矢量的位置的相对位置。
组成所述预编码矩阵的矢量的系数在第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置π 1(l,l sci)的另一个举例为，所述系数在第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的差的函数。例如，π 1(l,l sci)为l与l sci差的函数。例如，
Figure PCTCN2022089804-appb-000007
或者，
π 1(l,l sci)＝min{2·mod(l-l sci,L),2mod(l sci-l,L)-1}；
或者，
Figure PCTCN2022089804-appb-000008
例如，π 1(l,l sci)为所述系数在第一组矢量中所对应矢量所对应的CSI-RS端口的索引号p (l)与最强系数在第一组矢量中所对应矢量所对应的CSI-RS端口的索引号
Figure PCTCN2022089804-appb-000009
的差的函数。例如，
Figure PCTCN2022089804-appb-000010
或者，
Figure PCTCN2022089804-appb-000011
或者，
Figure PCTCN2022089804-appb-000012
其中，P为CSI-RS的端口数目。
所述预编码矩阵指示符包括对所述第一组矢量中强极化方向矢量的指示，强极化方向矢量的系数的优先级高于对应弱极化方向系数的优先级。例如，组成所述预编码矩阵的矢量的系数的优先级根据所述系数的优先级值确定，系数的优先级值越小所述系数的优先级越高，或者，系数的优先级值越大所述系 数的优先级越低；例如，对应于强极化方向矢量的索引号小于L/2，系数的优先级值为：Pri(l,i,f)＝L·ν·f+ν·i+l；对应于强极化方向矢量的索引号大于或等于L/2，系数的优先级值为：Pri(l,i,f)＝L·ν·f+ν·i+mod(l+L/2,L)。
在一个实施例中，所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息的配置信息包括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息的配置信息包括进入省略操作应当省略的系数的数目。
省略操作后信道状态信息中所保留的系数的数目是固定的，不具有灵活性。而信道状态信息的配置信息来配置省略操作后信道状态信息中所保留的系数，具有灵活性。
在一个实施例中，所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息包括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息包括进入省略操作应当省略的系数的数目。
在信道状态信息中报告进行省略操作后信道状态信息中所保留的系数的数目，不仅具有灵活性，还能适应承载信道状态信息的资源的变化情况，可以做到既不浪费资源，又能保证信道状态信息传输正确。
在一个实施例中，组成所述预编码矩阵的矢量的最强系数所在的极化方向为强极化方向，另一个极化方向为弱极化方向；
其中，弱极化方向的一个非零系数
Figure PCTCN2022089804-appb-000013
对应一个强极化方向的一个非零系数
Figure PCTCN2022089804-appb-000014
即弱极化方向的非零系数与强极化方向的非零系数可以为一一对应的关系，弱极化方向的每一个非零系数均可以对应一个强极化方向的非零系数；
弱极化方向一个非零系数的幅度相对于强极化方向所对应的非零系数的幅度的差分为
Figure PCTCN2022089804-appb-000015
其中
Figure PCTCN2022089804-appb-000016
预编码矩阵指示符包括弱极化方向一个非零系数的幅度相对于强极化方向所对应的非零系数的幅度的差分
Figure PCTCN2022089804-appb-000017
其中i表示系数的索引号，
Figure PCTCN2022089804-appb-000018
表示弱极化方向系数的幅度，
Figure PCTCN2022089804-appb-000019
表示强极化方向系数的幅度。
在相关技术中，弱极化方向所有系数幅度使用一个共同的参考值，在预编码指示符反馈相对于这个共同参考值的弱极化方向系数的幅度的差分。这就产生了一个问题，因为采用共同的参考值，弱极化方向系数的幅度的差分的动态范围就很大，弱极化方向系数的幅度的差分的量化精度就差。而预编码指示符包括弱极化方向一个非零系数的幅度相对于强极化方向的对应的非零系数的幅度的差分
Figure PCTCN2022089804-appb-000020
从而所述的差分
Figure PCTCN2022089804-appb-000021
的动态范围小，进而所述差分的量化精度就高。
在一个实施例中，所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否指示最强系数根据所述需要报告的系数的数目确定。
指示最强系数，即指示最强系数的位置；指示最强系数的位置需要花费一些开销，但最强系数的值可以取默认的值，例如默认的幅度值为1，相位值为0，从而不用显示的向基站反馈，从而可以节省一些开销。综合来看，采用指示最强系数的位置，不显示反馈最强系数的值的方案并不一定节省开销。根据需要报告的系数的数目可以确定指示最强系数位置所需要的开销，例如所需要的开销比特数为
Figure PCTCN2022089804-appb-000022
其中K NZ表示需要报告的系数的数目，log 2(·)表示对数运算，
Figure PCTCN2022089804-appb-000023
表示向上取整；所以根据需要报告的系数的数目可以确定报告最强系数的位置是否是一个节省开销的方案。例如，所述需要报告的系数的数目大于一个门限值确定不报告最强系数的位置。或者，所述需要报告的系数的数目小于一个门限值确定需要报告最强系数的位置。又例如，根据所述需要报告的系数的数目与预编码的层数确定是否指示最强系数的位置。例如，根据所述需要报告的系数的数目与预编码的层数的比值确定是否指示最强系数的位置。例如，需要报告的系数的数目与预编码的层数的比值大于一个门限值确定不需要报告最强系数的位置。再例如，需要报告的系数的数目与预编码的层数的比值小于一个门限值确定需要 报告最强系数的位置。其中，所述预编码的层数也就是预编码的秩。
在一个实施例中，所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否以位映射的方式指示需要报告的系数的位置根据所述需要报告的系数的数目确定。
例如，需要报告的系数的数目大于一个门限值，确定不以位映射的方式指示需要报告的系数的位置。再例如，需要报告的系数的数目小于一个门限值确定以位映射的方式指示需要报告的系数的位置。
组成预编码矩阵的矢量的数目较多，对应的矢量的系数也多，因此反馈系数的值的开销也大。为了节省开销，反馈一部分系数的值，另一部分系数的值不进行反馈，对于需要反馈的系数，以比特映射(bitmap)的方式指示出来。综合来看，仅反馈一部分系数的值会节省一些开销，但是采用比特映射方式指示出需要反馈的系数又会花费一些开销，因此采用比特映射指示需要反馈的系数的方案不一定能节省开销。根据需要报告的系数的数目可以确定采用比特映射指示需要反馈的系数是否是一个合理的方式。例如根据需要报告的系数的数目与比特映射可以计算出对应的开销，记为开销1；不采用比特映射指示需要报告的系数，而报告全部的系数的开销，记为开销2；比较开销1与开销2的大小就可以确定哪种方案节省开销，从而确定采用哪种方案。即是否以位映射的方式指示需要报告的系数的位置根据所述需要报告的系数的数目确定。
在一个实施例中，是否以位映射的方式指示需要报告的系数的位置根据需要报告的系数的数目与LM ν的比值确定。
例如，需要报告的系数的数目与LM ν的比值大于一个门限值，确定不以位映射的方式指示需要报告的系数的位置。再例如，需要报告的系数的数目与LM ν的比值小于一个门限值，确定以位映射的方式指示需要报告的系数的位置。
例如，采用比特映射指示出需要报告的系数，该方案的开销记为开销1，包括比特映射的开销、报告被指示出的系数的开销；比特映射的开销为LM νr个比特，需要报告的系数的开销为cK NZ个比特，则开销1的比特数为LM νr+cK NZ。不采用比特映射指示需要报告的系数，而报告全部的系数，该方案的开销记为开销2，开销2包括报告全部系数的开销，开销2的比特数为cLM νr。其中r代表预编码的层数，或预编码的秩，c代表反馈一个系数的值所用的比例数，例如反馈一个系数的幅度为4比特，反馈一个系数的相位为3比特，则反馈一个系数的值为7比特。当开销1大于开销2，则采用采用比特映射指示出需要报告的系数不恰当。开销1大于开销2等价于LM νr+cK NZ大于cLM νr，等价于cK NZ大于(c-1)LM νr，
等价于
Figure PCTCN2022089804-appb-000024
大于
Figure PCTCN2022089804-appb-000025
等价于
Figure PCTCN2022089804-appb-000026
大于
Figure PCTCN2022089804-appb-000027
等价于K NZ大于
Figure PCTCN2022089804-appb-000028
在一个实施例中，是否以位映射的方式指示需要报告的系数的位置根据预编码的层数确定。
例如，需要报告的系数的数目与LM νr的比值大于一个门限值，确定不以位映射的方式指示需要报告的系数的位置。再例如，需要报告的系数的数目与LM νr的比值小于一个门限值确定以位映射的方式指示需要报告的系数的位置。再例如，报告的系数的数目等于LM νr，确定不以位映射的方式指示需要报告的系数的位置。再例如，报告的系数的数目小于LM νr，确定以位映射的方式指示需要报告的系数的位置。再例如，对应于预编码的层数为1，采用组合数的方式指示出需要报告的系数的位置，而不采用位映射的方式指示需要报告的系数的位置。再例如，对应于预编码的层数为1，并且M ν的值为1，采用组合数的方式指示出需要报告的系数的位置，而不采用位映射的方式指示需要报告的系数的位置。例如，采用从L个矢量的系数中取出K NZ个系数的组合数方式指示出需要报告的系数的位置。
在一个示例性实施方式中，本申请还提供了一种信道状态信息传输方法，图2为本申请实施例提供的一种信道状态信息传输方法的流程示意图，该方法可以适用于提高信道状态信息所代表的信道状态的精确度的情况，该方法可以由信息传输装置执行，该装置可以由软件和/或硬件实现，并集成在第二通信节点上，第二通信节点可以为基站。本实施例尚未详尽之处参见上述实施例。
如图2所示，本申请提供了一种信道状态信息传输方法，包括以下步骤：
S210、传输配置信息。
所述配置信息包括信道状态信息的配置信息。
S220、获取第一通信节点发送的信道状态信息，所述信道状态信息根据所述配置信息报告。
第二通信节点在获取信道状态信息后，可以基于信道状态信息确定数据传输策略。
本申请实施例提供了一种信道状态信息传输方法，该方法传输配置信息；获取第一通信节点发送的信道状态信息，所述信道状态信息根据所述配置信息报告，该方法通过传输配置信息，以获取基于配置信息报告的信道状态信息节省了开销，并能够更加准确的进行数据传输策略的确定，进而提高了数据传输的效率。
在上述实施例的基础上，提出了上述实施例的变型实施例，在此需要说明的是，为了使描述简要，在变型实施例中仅描述与上述实施例的不同之处。
在一个实施例中，所述信道状态信息包括预编码矩阵指示符，所述预编码矩阵指示符所指示预编码矩阵由第一组矢量确定，或由第一组矢量与第二组矢量确定；第一组矢量包含L个矢量，第二组矢量包含M ν个矢量，其中L、M ν为正整数；其中，第一组矢量中的一个矢量对应所述信道状态信息参考信号的一个端口；第二组矢量中的一个矢量为索引号为
Figure PCTCN2022089804-appb-000029
的DFT矢量；其中，索引号为
Figure PCTCN2022089804-appb-000030
的DFT矢量的元素为：
Figure PCTCN2022089804-appb-000031
其中t＝{0,1...,N 3-1}，N 3是所述预编码矩阵的数量。
在一个实施例中，所述信道状态信息的配置信息包括所述预编码矩阵指示符的报告格式，其中所述预编码矩阵指示符的报告格式指示以下信息至少之一：
M ν的值，或M ν的值的范围；
信道状态信息中是否包括对所述M ν个矢量的报告；
预编码矩阵是否包括第二组矢量。
在一个实施例中，所述预编码矩阵指示符包括组成所述预编码矩阵的矢量的系数，所述矢量的系数的优先级根据下述方式至少之一确定：
所述预编码矩阵指示符包括最强系数在所述第二组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
预编码矩阵指示符包括最强系数在所述第一组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
所述矢量的系数在所述第二组矢量中所对应矢量的索引号越小，所述矢量的系数的优先级越高，或者所述矢量的系数在所述第二组矢量中所对应矢量的索引号越大，所述矢量的系数的优先级越低；
所述预编码矩阵指示符包括对所述第一组矢量中强极化方向矢量的指示，强极化方向矢量的系数的优先级高于对应弱极化方向系数的优先级。
在一个实施例中，所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息的配置信息包括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息的配置信息包括进入省略操作应当省略的系数的数目。
在一个实施例中，所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息包括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息包括进入省略操作应当省略的系数的数目。
在一个实施例中，组成所述预编码矩阵的矢量的最强系数所在的极化方向为强极化方向，另一个极化方向为弱极化方向；
其中，弱极化方向的一个非零系数
Figure PCTCN2022089804-appb-000032
对应一个强极化方向的一个非零系数
Figure PCTCN2022089804-appb-000033
弱极化方向一个非零系数的幅度相对于强极化方向所对应的非零系数的幅度的差分为
Figure PCTCN2022089804-appb-000034
其中
Figure PCTCN2022089804-appb-000035
预编码矩阵指示符包括弱极化方向一个非零系数的幅度相对于强极化方向所对应的非零系数的幅度的差分
Figure PCTCN2022089804-appb-000036
其中i表示系数的索引号，
Figure PCTCN2022089804-appb-000037
表示弱极化方向系数的幅度，
Figure PCTCN2022089804-appb-000038
表示强极化方向系数的幅度。
在一个实施例中，所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否指示最强系数根据所述需要报告的系数的数目确定。
在一个实施例中，所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否以位映射的方式指示需要报告的系数的位置根据所述需要报告的系数的数目确定。
在一个实施例中，是否以位映射的方式指示需要报告的系数的位置根据需要报告的系数的数目与LM ν的比值确定。
在一个示例性实施方式中，本申请提供了一种信息传输装置，图3为本申请实施例提供的一种信道状态信息传输装置的结构示意图，该装置可以配置于第一通信节点，如图3所示，该装置包括：
第一接收模块31，设置为接收第二通信节点的配置信息；
第二接收模块32，设置为根据所述配置信息接收所述第二通信节点发送的信道状态信息参考信号；
报告模块33，设置为根据所述配置信息报告信道状态信息，所述信道状态信息根据所述信道状态信息参考信号确定；
其中，所述配置信息包括信道状态信息的配置信息。
本实施例提供的信息传输装置用于实现如图1所示实施例的信道状态信息传输方法，本实施例提供的信息传输装置实现原理和技术效果与图1所示实施例的信道状态信息传输方法类似，此处不再赘述。
在上述实施例的基础上，提出了上述实施例的变型实施例，在此需要说明的是，为了使描述简要，在变型实施例中仅描述与上述实施例的不同之处。
在一个实施例中，所述信道状态信息包括预编码矩阵指示符，所述预编码矩阵指示符所指示预编码矩阵由第一组矢量确定，或由第一组矢量与第二组矢量确定；第一组矢量包含L个矢量，第二组矢量包含M ν个矢量，其中L、M ν为正整数；其中，第一组矢量中的一个矢量对应所述信道状态信息参考信号的一个端口；第二组矢量中的一个矢量为索引号为
Figure PCTCN2022089804-appb-000039
的DFT矢量；其中，索引号为
Figure PCTCN2022089804-appb-000040
的DFT矢量的元素为：
Figure PCTCN2022089804-appb-000041
其中t＝{0,1...,N 3-1}，N 3是所述预编码矩阵的数量。
在一个实施例中，所述信道状态信息的配置信息包括所述预编码矩阵指示符的报告格式，其中所述预编码矩阵指示符的报告格式指示以下信息至少之一：
M ν的值，或M ν的值的范围；
信道状态信息中是否包括对所述M ν个矢量的报告；
预编码矩阵是否包括第二组矢量。
在一个实施例中，所述预编码矩阵指示符包括组成所述预编码矩阵的矢量的系数，所述矢量的系数的优先级根据下述方式至少之一确定：
所述预编码矩阵指示符包括最强系数在所述第二组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
预编码矩阵指示符包括最强系数在所述第一组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
所述矢量的系数在所述第二组矢量中所对应矢量的索引号越小，所述矢量的系数的优先级越高，或 者所述矢量的系数在所述第二组矢量中所对应矢量的索引号越大，所述矢量的系数的优先级越低；
所述预编码矩阵指示符包括对所述第一组矢量中强极化方向矢量的指示，强极化方向矢量的系数的优先级高于对应弱极化方向系数的优先级。
在一个实施例中，所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息的配置信息包括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息的配置信息包括进入省略操作应当省略的系数的数目。
在一个实施例中，所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息包括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息包括进入省略操作应当省略的系数的数目。
在一个实施例中，组成所述预编码矩阵的矢量的最强系数所在的极化方向为强极化方向，另一个极化方向为弱极化方向；
其中，弱极化方向的一个非零系数
Figure PCTCN2022089804-appb-000042
对应一个强极化方向的一个非零系数
Figure PCTCN2022089804-appb-000043
弱极化方向一个非零系数的幅度相对于强极化方向所对应的非零系数的幅度的差分为
Figure PCTCN2022089804-appb-000044
其中
Figure PCTCN2022089804-appb-000045
预编码矩阵指示符包括弱极化方向一个非零系数的幅度相对于强极化方向所对应的非零系数的幅度的差分
Figure PCTCN2022089804-appb-000046
其中i表示系数的索引号，
Figure PCTCN2022089804-appb-000047
表示弱极化方向系数的幅度，
Figure PCTCN2022089804-appb-000048
表示强极化方向系数的幅度。
在一个实施例中，所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否指示最强系数根据所述需要报告的系数的数目确定。
在一个实施例中，所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否以位映射的方式指示需要报告的系数的位置根据所述需要报告的系数的数目确定。
在一个实施例中，是否以位映射的方式指示需要报告的系数的位置根据需要报告的系数的数目与LM ν的比值确定。
在一个示例性实施方式中，本申请实施例还提供了一种信息传输装置，图4为本申请实施例提供的一种信息传输装置的结构示意图，该装置配置于第二通信节点，如图4所示，该装置包括：
传输模块41，设置为传输配置信息；
获取模块42，设置为获取第一通信节点发送的信道状态信息，所述信道状态信息根据所述配置信息报告；
其中，所述配置信息包括信道状态信息的配置信息。
本实施例提供的信息传输装置用于实现如图2示实施例的信道状态信息传输方法，本实施例提供的信息传输装置实现原理和技术效果与图2示实施例的信道状态信息传输方法类似，此处不再赘述。
在上述实施例的基础上，提出了上述实施例的变型实施例，在此需要说明的是，为了使描述简要，在变型实施例中仅描述与上述实施例的不同之处。
在一个实施例中，所述信道状态信息包括预编码矩阵指示符，所述预编码矩阵指示符所指示预编码矩阵由第一组矢量确定，或由第一组矢量与第二组矢量确定；第一组矢量包含L个矢量，第二组矢量包含M ν个矢量，其中L、M ν为正整数；其中，第一组矢量中的一个矢量对应所述信道状态信息参考信号的一个端口；第二组矢量中的一个矢量为索引号为
Figure PCTCN2022089804-appb-000049
的DFT矢量；其中，索引号为
Figure PCTCN2022089804-appb-000050
的DFT矢量的元素为：
Figure PCTCN2022089804-appb-000051
其中t＝{0,1...,N 3-1}，N 3是所述预编码矩阵的数量。
在一个实施例中，所述信道状态信息的配置信息包括所述预编码矩阵指示符的报告格式，其中所述预编码矩阵指示符的报告格式指示以下信息至少之一：
M ν的值，或M ν的值的范围；
信道状态信息中是否包括对所述M ν个矢量的报告；
预编码矩阵是否包括第二组矢量。
在一个实施例中，所述预编码矩阵指示符包括组成所述预编码矩阵的矢量的系数，所述矢量的系数的优先级根据下述方式至少之一确定：
所述预编码矩阵指示符包括最强系数在所述第二组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
预编码矩阵指示符包括最强系数在所述第一组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
所述矢量的系数在所述第二组矢量中所对应矢量的索引号越小，所述矢量的系数的优先级越高，或者所述矢量的系数在所述第二组矢量中所对应矢量的索引号越大，所述矢量的系数的优先级越低；
所述预编码矩阵指示符包括对所述第一组矢量中强极化方向矢量的指示，强极化方向矢量的系数的优先级高于对应弱极化方向系数的优先级。
在一个实施例中，所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息的配置信息包括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息的配置信息包括进入省略操作应当省略的系数的数目。
在一个实施例中，所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息包括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息包括进入省略操作应当省略的系数的数目。
在一个实施例中，组成所述预编码矩阵的矢量的最强系数所在的极化方向为强极化方向，另一个极化方向为弱极化方向；
其中，弱极化方向的一个非零系数
Figure PCTCN2022089804-appb-000052
对应一个强极化方向的一个非零系数
Figure PCTCN2022089804-appb-000053
弱极化方向一个非零系数的幅度相对于强极化方向所对应的非零系数的幅度的差分为
Figure PCTCN2022089804-appb-000054
其中
Figure PCTCN2022089804-appb-000055
预编码矩阵指示符包括弱极化方向一个非零系数的幅度相对于强极化方向所对应的非零系数的幅度的差分
Figure PCTCN2022089804-appb-000056
其中i表示系数的索引号，
Figure PCTCN2022089804-appb-000057
表示弱极化方向系数的幅度，
Figure PCTCN2022089804-appb-000058
表示强极化方向系数的幅度。
在一个实施例中，所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否指示最强系数根据所述需要报告的系数的数目确定。
在一个实施例中，所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否以位映射的方式指示需要报告的系数的位置根据所述需要报告的系数的数目确定。
在一个实施例中，是否以位映射的方式指示需要报告的系数的位置根据需要报告的系数的数目与LM v的比值确定。
在一个示例性实施方式中，本申请提供了一种通信节点，图5为本申请实施例提供的一种通信节点的结构示意图。在通信节点实现如图1所示的信道状态信息传输方法的情况下，该通信节点为第一通信节点；在通信节点实现如图2所示的信道状态信息传输方法的情况下，该通信节点为第二通信节点。如图5所示，本申请提供的通信节点，包括一个或多个处理器51和存储装置52；该通信节点中的处理器51可以是一个或多个，图5中以一个处理器51为例；存储装置52用于存储一个或多个程序；所述一个或多个程序被所述一个或多个处理器51执行，使得所述一个或多个处理器51实现如本申请实施例中所述的信道状态信息传输方法。
通信节点还包括：通信装置53、输入装置54和输出装置55。
通信节点中的处理器51、存储装置52、通信装置53、输入装置54和输出装置55可以通过总线或其他方式连接，图5中以通过总线连接为例。
输入装置54可用于接收输入的数字或字符信息，以及产生与通信节点的用户设置以及功能控制有关的按键信号输入。输出装置55可包括显示屏等显示设备。
通信装置53可以包括接收器和发送器。通信装置53设置为根据处理器51的控制进行信息收发通信。信息包括但不限于配置信息和信道状态信息。
存储装置52作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请实施例所述信道状态信息传输方法对应的程序指令/模块(例如，信道状态信息传输装置中的第一接收模块31、第二接收模块32和报告模块33；又如，信道状态信息传输装置中的传输模块41和获取模块42)。存储装置52可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；存储数据区可存储根据通信节点的使用所创建的数据等。此外，存储装置52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、或其他非易失性固态存储器件。在一些实例中，存储装置52可进一步包括相对于处理器51远程设置的存储器，这些远程存储器可以通过网络连接至通信节点。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
本申请实施例还提供一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现本申请任一所述方法，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现本申请实施例中任一所述的信道状态信息传输方法。如应用于第一通信节点的信道状态信息传输方法和应用于第二通信节点的信道状态信息传输方法，其中，应用于第一通信节点的信道状态信息传输方法包括：接收第二通信节点的配置信息；
根据所述配置信息接收所述第二通信节点发送的信道状态信息参考信号；
根据所述配置信息报告信道状态信息，所述信道状态信息根据所述信道状态信息参考信号确定；
其中，所述配置信息包括信道状态信息的配置信息。
应用于第二通信节点的信道状态信息传输方法包括：传输配置信息；
获取第一通信节点发送的信道状态信息，所述信道状态信息根据所述配置信息报告；
其中，所述配置信息包括信道状态信息的配置信息。
本申请实施例的计算机存储介质，可以采用一个或多个计算机可读的介质的任意组合。计算机可读介质可以是计算机可读信号介质或者计算机可读存储介质。计算机可读存储介质例如可以是，但不限于电、磁、光、电磁、红外线、或半导体的系统、装置或器件，或者任意以上的组合。计算机可读存储介质的更具体的例子(非穷举的列表)包括：具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机存取存储器(Random Access Memory，RAM)、只读存储器(Read Only Memory，ROM)、可擦式可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)、闪存、光纤、便携式CD-ROM、光存储器件、磁存储器件、或者上述的任意合适的组合。计算机可读存储介质可以是任何包含或存储程序的有形介质，该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。
计算机可读的信号介质可以包括在基带中或者作为载波一部分传播的数据信号，其中承载了计算机可读的程序代码。这种传播的数据信号可以采用多种形式，包括但不限于：电磁信号、光信号或上述的任意合适的组合。计算机可读的信号介质还可以是计算机可读存储介质以外的任何计算机可读介质，该计算机可读介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。
计算机可读介质上包含的程序代码可以用任何适当的介质传输，包括但不限于：无线、电线、光缆、无线电频率(Radio Frequency，RF)等等，或者上述的任意合适的组合。
可以以一种或多种程序设计语言或其组合来编写用于执行本申请操作的计算机程序代码，所述程序设计语言包括面向对象的程序设计语言—诸如Java、Smalltalk、C++，还包括常规的过程式程序设计语言 —诸如“C”语言或类似的程序设计语言。程序代码可以完全地在用户计算机上执行、部分地在用户计算机上执行、作为一个独立的软件包执行、部分在用户计算机上部分在远程计算机上执行、或者完全在远程计算机或服务器上执行。在涉及远程计算机的情形中，远程计算机可以通过任意种类的网络，包括局域网(LAN)或广域网(WAN)连接到用户计算机，或者，可以连接到外部计算机(例如利用因特网服务提供商来通过因特网连接)。
以上所述，仅为本申请的示例性实施例而已，并非用于限定本申请的保护范围。
本领域内的技术人员应明白，术语终端涵盖任何适合类型的无线用户设备，例如移动电话、便携数据处理装置、便携网络浏览器或车载移动台。
一般来说，本申请的多种实施例可以在硬件或专用电路、软件、逻辑或其任何组合中实现。例如，一些方面可以被实现在硬件中，而其它方面可以被实现在可以被控制器、微处理器或其它计算装置执行的固件或软件中，尽管本申请不限于此。
本申请的实施例可以通过移动装置的数据处理器执行计算机程序指令来实现，例如在处理器实体中，或者通过硬件，或者通过软件和硬件的组合。计算机程序指令可以是汇编指令、指令集架构(Instruction Set Architecture，ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码。
本申请附图中的任何逻辑流程的框图可以表示程序步骤，或者可以表示相互连接的逻辑电路、模块和功能，或者可以表示程序步骤与逻辑电路、模块和功能的组合。计算机程序可以存储在存储器上。存储器可以具有任何适合于本地技术环境的类型并且可以使用任何适合的数据存储技术实现，例如但不限于只读存储器(Read-Only Memory，ROM)、随机访问存储器(Random Access Memory，RAM)、光存储器装置和系统(数码多功能光碟(Digital Video Disc，DVD)或光盘(Compact Disk，CD))等。计算机可读介质可以包括非瞬时性存储介质。数据处理器可以是任何适合于本地技术环境的类型，例如但不限于通用计算机、专用计算机、微处理器、数字信号处理器(Digital Signal Processing，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑器件(Field-Programmable Gate Array，FGPA)以及基于多核处理器架构的处理器。

Claims (24)

  1. 一种信道状态信息传输方法，应用于第一通信节点，包括：
    接收第二通信节点的配置信息；
    根据所述配置信息接收所述第二通信节点发送的信道状态信息参考信号；
    根据所述配置信息报告信道状态信息，所述信道状态信息根据所述信道状态信息参考信号确定；
    其中，所述配置信息包括信道状态信息的配置信息。
  2. 根据权利要求1所述的方法，其中，所述信道状态信息包括预编码矩阵指示符，所述预编码矩阵指示符所指示的预编码矩阵由第一组矢量确定，或由第一组矢量与第二组矢量确定；所述第一组矢量包含L个矢量，所述第二组矢量包含M ν个矢量，其中L、M ν为正整数；其中，所述第一组矢量中的一个矢量对应所述信道状态信息参考信号的一个端口；所述第二组矢量中的一个矢量为索引号为
    Figure PCTCN2022089804-appb-100001
    的离散傅里叶变换DFT矢量；其中，索引号为
    Figure PCTCN2022089804-appb-100002
    的DFT矢量的元素为：
    Figure PCTCN2022089804-appb-100003
    其中t＝{0,1...,N 3-1}，N 3是所述预编码矩阵的数量。
  3. 根据权利要求2所述的方法，其中，所述信道状态信息的配置信息包括所述预编码矩阵指示符的报告格式，所述预编码矩阵指示符的报告格式指示以下信息中的至少之一：
    M ν的值，或M ν的值的范围；
    所述信道状态信息中是否包括对M ν个矢量的报告；
    所述预编码矩阵是否包括所述第二组矢量。
  4. 根据权利要求2所述的方法，其中，所述预编码矩阵指示符包括组成所述预编码矩阵的矢量的系数，所述矢量的系数的优先级根据下述方式中的至少之一确定：
    所述预编码矩阵指示符包括最强系数在所述第二组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
    预编码矩阵指示符包括最强系数在所述第一组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
    所述矢量的系数在所述第二组矢量中所对应矢量的索引号越小，所述矢量的系数的优先级越高，或者所述矢量的系数在所述第二组矢量中所对应矢量的索引号越大，所述矢量的系数的优先级越低；
    所述预编码矩阵指示符包括对所述第一组矢量中强极化方向矢量的指示，强极化方向矢量的系数的优先级高于对应弱极化方向矢量的系数的优先级。
  5. 根据权利要求4所述的方法，其中，
    所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息的配置信息包括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息的配置信息包括进入省略操作应当省略的系数的数目。
  6. 根据权利要求4所述的方法，其中，
    所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息包括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息包括进入省略操作应当省略的系数的数目。
  7. 根据权利要求2所述的方法，其中，
    组成所述预编码矩阵的矢量的最强系数所在的极化方向为强极化方向，另一个极化方向为弱极化方向；
    其中，所述弱极化方向的一个非零系数
    Figure PCTCN2022089804-appb-100004
    对应所述强极化方向的一个非零系数
    Figure PCTCN2022089804-appb-100005
    所述弱极化方向一个非零系数的幅度相对于所述强极化方向所对应的非零系数的幅度的差分为
    Figure PCTCN2022089804-appb-100006
    其中
    Figure PCTCN2022089804-appb-100007
    预编码矩阵指示符包括弱极化方向一个非零系数的幅度相对于强极化方向所对应的非零系数的幅度的差分
    Figure PCTCN2022089804-appb-100008
    其中i表示系数的索引号，
    Figure PCTCN2022089804-appb-100009
    表示弱极化方向系数的幅度，
    Figure PCTCN2022089804-appb-100010
    表示强极化方向系数的幅度。
  8. 根据权利要求2所述的方法，其中，
    所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否指示最强系数根据所述需要报告的系数的数目确定。
  9. 根据权利要求2所述的方法，其中，
    所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否以位映射的方式指示需要报告的系数的位置根据所述需要报告的系数的数目确定。
  10. 根据权利要求9所述的方法，其中，所述是否以位映射的方式指示需要报告的系数的位置根据所述需要报告的系数的数目确定，包括：
    是否以位映射的方式指示需要报告的系数的位置根据需要报告的系数的数目与LM v的比值确定。
  11. 一种信道状态信息传输方法，应用于第二通信节点，包括：
    传输配置信息；
    获取第一通信节点发送的信道状态信息，所述信道状态信息根据所述配置信息报告；
    其中，所述配置信息包括信道状态信息的配置信息。
  12. 根据权利要求11所述的方法，其特征在于，所述信道状态信息包括预编码矩阵指示符，所述预编码矩阵指示符所指示的预编码矩阵由第一组矢量确定，或由第一组矢量与第二组矢量确定；第一组矢量包含L个矢量，第二组矢量包含M ν个矢量，其中L、M ν为正整数；其中，第一组矢量中的一个矢量对应所述信道状态信息参考信号的一个端口；第二组矢量中的一个矢量为索引号为
    Figure PCTCN2022089804-appb-100011
    的DFT矢量；其中，索引号为
    Figure PCTCN2022089804-appb-100012
    的DFT矢量的元素为：
    Figure PCTCN2022089804-appb-100013
    其中t＝{0,1...,N 3-1}，N 3是所述预编码矩阵的数量。
  13. 根据权利要求12所述的方法，其中，所述信道状态信息的配置信息包括所述预编码矩阵指示符的报告格式，其中所述预编码矩阵指示符的报告格式指示以下信息至少之一：
    M ν的值，或M ν的值的范围；
    信道状态信息中是否包括对所述M ν个矢量的报告；
    预编码矩阵是否包括第二组矢量。
  14. 根据权利要求12所述的方法，其中，所述预编码矩阵指示符包括组成所述预编码矩阵的矢量的系数，所述矢量的系数的优先级根据下述方式至少之一确定：
    所述预编码矩阵指示符包括最强系数在所述第二组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第二组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
    预编码矩阵指示符包括最强系数在所述第一组矢量中所对应矢量的位置，所述矢量的系数的优先级根据所述矢量的系数在所述第一组矢量中所对应矢量的位置与所述最强系数对应矢量的位置的相对位置确定；
    所述矢量的系数在所述第二组矢量中所对应矢量的索引号越小，所述矢量的系数的优先级越高，或者所述矢量的系数在所述第二组矢量中所对应矢量的索引号越大，所述矢量的系数的优先级越低；
    所述预编码矩阵指示符包括对所述第一组矢量中强极化方向矢量的指示，强极化方向矢量的系数的优先级高于对应弱极化方向系数的优先级。
  15. 根据权利要求14所述的方法，其中，
    所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息的配置信息包 括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息的配置信息包括进入省略操作应当省略的系数的数目。
  16. 根据权利要求14所述的方法，其中，
    所述矢量的系数按照所述系数的优先级确定是否进行省略，其中，所述信道状态信息包括进行省略操作后所述信道状态信息中所保留的系数的数目；或者，所述信道状态信息包括进入省略操作应当省略的系数的数目。
  17. 根据权利要求12所述的方法，其中，
    组成所述预编码矩阵的矢量的最强系数所在的极化方向为强极化方向，另一个极化方向为弱极化方向；
    其中，弱极化方向的一个非零系数
    Figure PCTCN2022089804-appb-100014
    对应一个强极化方向的一个非零系数
    Figure PCTCN2022089804-appb-100015
    弱极化方向一个非零系数的幅度相对于强极化方向所对应的非零系数的幅度的差分为
    Figure PCTCN2022089804-appb-100016
    其中
    Figure PCTCN2022089804-appb-100017
    预编码矩阵指示符包括弱极化方向一个非零系数的幅度相对于强极化方向所对应的非零系数的幅度的差分
    Figure PCTCN2022089804-appb-100018
    其中i表示系数的索引号，
    Figure PCTCN2022089804-appb-100019
    表示弱极化方向系数的幅度，
    Figure PCTCN2022089804-appb-100020
    表示强极化方向系数的幅度。
  18. 根据权利要求12所述的方法，其中，所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否指示最强系数根据所述需要报告的系数的数目确定。
  19. 根据权利要求12所述的方法，其中，所述信道状态信息包括组成所述预编码矩阵的矢量的系数中需要报告的系数的数目，是否以位映射的方式指示需要报告的系数的位置根据所述需要报告的系数的数目确定。
  20. 根据权利要求19所述的方法，其中，所述是否以位映射的方式指示需要报告的系数的位置根据所述需要报告的系数的数目确定，包括：
    是否以位映射的方式指示需要报告的系数的位置根据需要报告的系数的数目与LM v的比值确定。
  21. 一种信息传输装置，配置于第一通信节点，包括：
    第一接收模块，设置为接收第二通信节点的配置信息；
    第二接收模块，设置为根据所述配置信息接收所述第二通信节点发送的信道状态信息参考信号；
    报告模块，设置为根据所述配置信息报告信道状态信息，所述信道状态信息根据所述信道状态信息参考信号确定；
    其中，所述配置信息包括信道状态信息的配置信息。
  22. 一种信息传输装置，配置于第二通信节点，包括：
    传输模块，设置为传输配置信息；
    获取模块，设置为获取第一通信节点发送的信道状态信息，所述信道状态信息根据所述配置信息报告；
    其中，所述配置信息包括信道状态信息的配置信息。
  23. 一种通信节点，包括：
    一个或多个处理器；
    存储装置，用于存储一个或多个程序；
    当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如权利要求1-20中任一所述的方法。
  24. 一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1-20中任一项所述的方法。
PCT/CN2022/089804 2021-05-19 2022-04-28 信道状态信息传输方法、装置、通信节点及存储介质 WO2022242444A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020237041210A KR20240004752A (ko) 2021-05-19 2022-04-28 채널 상태 정보 전송 방법, 장치, 통신 노드 및 기록 매체
EP22803768.5A EP4333334A1 (en) 2021-05-19 2022-04-28 Channel state information transmission method and device, communication node, and storage medium
CA3218879A CA3218879A1 (en) 2021-05-19 2022-04-28 Channel state information transmission method and device, communication node, and storage medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110548009.6A CN115378544A (zh) 2021-05-19 2021-05-19 一种信道状态信息传输方法、装置、通信节点及存储介质
CN202110548009.6 2021-05-19

Publications (1)

Publication Number Publication Date
WO2022242444A1 true WO2022242444A1 (zh) 2022-11-24

Family

ID=84058263

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/089804 WO2022242444A1 (zh) 2021-05-19 2022-04-28 信道状态信息传输方法、装置、通信节点及存储介质

Country Status (5)

Country Link
EP (1) EP4333334A1 (zh)
KR (1) KR20240004752A (zh)
CN (1) CN115378544A (zh)
CA (1) CA3218879A1 (zh)
WO (1) WO2022242444A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108288983A (zh) * 2017-01-09 2018-07-17 中兴通讯股份有限公司 信道状态信息的反馈、确定方法及装置
WO2020052736A1 (en) * 2018-09-11 2020-03-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Doppler codebook-based precoding and csi reporting for wireless communications systems
CN111901080A (zh) * 2020-01-07 2020-11-06 中兴通讯股份有限公司 一种信息获取方法、装置、设备和存储介质
CN112865843A (zh) * 2021-01-14 2021-05-28 中兴通讯股份有限公司 信道状态信息传输方法、装置、电子设备和存储介质

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108288983A (zh) * 2017-01-09 2018-07-17 中兴通讯股份有限公司 信道状态信息的反馈、确定方法及装置
WO2020052736A1 (en) * 2018-09-11 2020-03-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Doppler codebook-based precoding and csi reporting for wireless communications systems
CN111901080A (zh) * 2020-01-07 2020-11-06 中兴通讯股份有限公司 一种信息获取方法、装置、设备和存储介质
CN112865843A (zh) * 2021-01-14 2021-05-28 中兴通讯股份有限公司 信道状态信息传输方法、装置、电子设备和存储介质

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FUTUREWEI: "CSI enhancement for multi-TRP and FDD", 3GPP DRAFT; R1-2007545, vol. RAN WG1, 23 October 2020 (2020-10-23), pages 1 - 8, XP051945272 *

Also Published As

Publication number Publication date
EP4333334A1 (en) 2024-03-06
CN115378544A (zh) 2022-11-22
KR20240004752A (ko) 2024-01-11
CA3218879A1 (en) 2022-11-24

Similar Documents

Publication Publication Date Title
US20200245348A1 (en) Method, device, and storage medium for configuring starting symbol position of uplink data channel
WO2018177229A1 (zh) 信令的发送方法，装置和系统
WO2019137058A1 (zh) 资源指示方法、终端设备和网络设备
WO2019062217A1 (zh) 数据传输方法、终端设备以及网络设备
WO2018228153A1 (zh) 相位跟踪参考信号的传输方法和传输装置、及其接收方法和接收装置
WO2017152785A1 (zh) 一种csi反馈方法、预编码方法及装置
US11722192B2 (en) Interference measurement method, user equipment and network side device
CN111817798B (zh) 一种信道测量方法和通信装置
EP3800945B1 (en) Power allocation method and related device
WO2017152747A1 (zh) 一种csi反馈方法、预编码方法及装置
CN112865843A (zh) 信道状态信息传输方法、装置、电子设备和存储介质
US20230261841A1 (en) Signal transmission method and apparatus
WO2022242444A1 (zh) 信道状态信息传输方法、装置、通信节点及存储介质
WO2018023735A1 (zh) 一种终端、基站和获得信道信息的方法
WO2015003367A1 (zh) 反馈信道状态信息csi的方法、用户设备和基站
WO2023078177A1 (zh) 信息传输方法、设备和存储介质
WO2023078176A1 (zh) 信息传输方法、设备和存储介质
WO2022193895A1 (zh) 信道状态信息报告方法、信道状态信息接收方法、通信节点及存储介质
WO2023000816A1 (zh) 一种信道状态信息的传输方法、通信节点及存储介质
JP2024519790A (ja) チャネル状態情報伝送方法、装置、通信ノード及び記憶媒体
WO2023279954A1 (zh) 信道状态信息报告、接收方法、通信节点及存储介质
WO2023279880A1 (zh) 数据传输方法、设备和存储介质
WO2023050843A1 (zh) 信息报告、接收方法、设备和存储介质
WO2023078439A1 (zh) 参考信号接收、发送方法、第一、第二通信节点及介质

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22803768

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 18559125

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 3218879

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2023570419

Country of ref document: JP

ENP Entry into the national phase

Ref document number: 20237041210

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2022803768

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2022803768

Country of ref document: EP

Effective date: 20231129

NENP Non-entry into the national phase

Ref country code: DE