WO2022198471A1 - 一种信息反馈方法以及相关装置 - Google Patents

一种信息反馈方法以及相关装置 Download PDF

Info

Publication number
WO2022198471A1
WO2022198471A1 PCT/CN2021/082539 CN2021082539W WO2022198471A1 WO 2022198471 A1 WO2022198471 A1 WO 2022198471A1 CN 2021082539 W CN2021082539 W CN 2021082539W WO 2022198471 A1 WO2022198471 A1 WO 2022198471A1
Authority
WO
WIPO (PCT)
Prior art keywords
quantization
coefficient
coefficients
csi
communication device
Prior art date
Application number
PCT/CN2021/082539
Other languages
English (en)
French (fr)
Inventor
范利
葛士斌
汪洁
袁一凌
种稚萌
金黄平
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2021/082539 priority Critical patent/WO2022198471A1/zh
Priority to CN202180096249.5A priority patent/CN117063406A/zh
Publication of WO2022198471A1 publication Critical patent/WO2022198471A1/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of communication technologies, and in particular, to an information feedback method and a related device.
  • Massive MIMO Multiple Input Multiple Output
  • 5G Fifth Generation
  • Massive MIMO achieves significant improvements in spectral efficiency by using massive antennas.
  • the accuracy of the Channel State Information (CSI) acquired by the network device largely determines the performance of Massive MIMO.
  • FDD frequency division duplex
  • TDD time division duplex
  • codebook design is a key issue in Massive MIMO.
  • an optimal codeword is selected from multiple candidate codewords, and the selected codeword is reported as CSI information in the form of a precoding matrix indicator (PMI).
  • PMI precoding matrix indicator
  • a possible method is to use the reciprocity of the channel to determine the channel state information.
  • the non-zero coefficients of the codebook are quantized by equalization.
  • the quantization rule is relatively simple, and the characteristics of the channel are not fully considered, resulting in a large quantization loss. Based on this, it is necessary to provide an information feedback method, which can improve the accuracy of channel state information feedback under the premise of less feedback overhead.
  • an embodiment of the present application proposes an information feedback method, including:
  • the communication device performs quantization processing on the first coefficients in the G packets based on the Z quantization rules to obtain quantization indication information, where the first coefficient is a channel state information-reference signal (channel state information-reference signal, CSI-RS) port (port ) corresponding coefficients, wherein the Z quantization rules are the quantization rules corresponding to the first coefficients in the G groupings, G is an integer greater than 1, and Z is a positive integer less than or equal to G; each grouping includes one or more the first coefficients, each CSI-RS port corresponds to one or more first coefficients; each group is quantized using a quantization rule to obtain quantization indication information; the communication device determines the quantization based on the quantization indication information and the feedback rule Feedback.
  • CSI-RS channel state information-reference signal
  • the information feedback method may be performed by a communication device, and the communication device may be a terminal device, or may also be a chip, a chip system or a circuit configured in the terminal device.
  • the first coefficient is also called a superposition coefficient, or a combination coefficient, or a superposition coefficient corresponding to an angle-delay pair, etc., which is not limited here.
  • different quantization rules may be used for different first coefficients to achieve non-uniform quantization.
  • the accuracy of CSI feedback is improved.
  • the G first coefficients grouped as global are obtained by grouping based on the grouping rule.
  • the G first coefficients grouped as global are obtained by grouping based on a grouping rule.
  • the global first coefficient may be the first coefficient of all layers, or may be the first coefficient of a certain layer or multiple layers.
  • the first coefficient of the certain layer is divided into G groups.
  • the global first coefficient may also be the first coefficient of all layers, and the first coefficients of all layers are divided into G groups.
  • the first coefficients of each of the all layers are divided into G groups, which are not limited here.
  • Non-uniform quantization is achieved by grouping a plurality of first coefficients. On the premise of less feedback overhead, the accuracy of CSI feedback is improved.
  • the communication apparatus sends the quantization feedback information to the network apparatus.
  • the communication device receives indication information from the network device, where the indication information is used to indicate one of quantification rules, feedback rules and grouping rules used by the communication device or multiple.
  • the network device can send the indication information to the communication device in various ways, which are described below:
  • the indication information includes one or more of a quantification rule, a grouping rule, and a feedback rule.
  • the indication information sent by the network device to the communication device includes: quantification rule A, grouping rule A, and feedback rule A.
  • the communication apparatus performs grouping processing on the global first coefficients based on the grouping rule A in the instruction information.
  • the communication device performs quantization processing on the first coefficients in each group based on the quantization rule A in the indication information to obtain quantization indication information.
  • the communication device processes the quantization instruction information based on the feedback rule A in the instruction information, and obtains the quantized feedback information.
  • the quantification rules, grouping rules or feedback rules include one or more sub-rules
  • one or more of the quantification rules, grouping rules and feedback rules include quantification rules sub-rules, grouping rules sub-rules and feedback rules One or more of the subrules.
  • the indication information includes one or more of an index of a quantization rule, an index of a grouping rule, and an index of a feedback rule.
  • the indication information may be indication information with a value of 0 or 1, for example, when the value is 1110, it corresponds to grouping rule A, and when the value is 1111, it corresponds to grouping rule B.
  • the indication information may also be in the form of a string "quantization A", or “quantization B”, etc. to indicate one or more of the corresponding quantization rules, grouping rules and feedback rules through specific meanings.
  • One or more of quantification rules, grouping rules and feedback rules are preconfigured in the communication device.
  • the pre-configuration may be a protocol agreement, or may be configured by the network device, for example, may be configured by the network device when the communication device accesses the network device, which is not limited here.
  • the communication device determines one or more of one or more of the quantization rule, grouping rule and feedback rule to be used according to the index included in the indication information.
  • One or more of Network Device Network Device and Feedback Rules are preconfigured in the communication device.
  • the network device may send the indication information to the communication device through the following signaling or messages, including but not limited to: scheduling downlink control information (downlink control information, DCI), radio resource control (radio resource control, RRC) information. command, or media access control sublayer control element signaling (media access control control element, MAC CE).
  • DCI downlink control information
  • RRC radio resource control
  • MAC CE media access control sublayer control element signaling
  • the network device when the protocol pre-stipulates one or more of quantification rules, grouping rules and feedback rules used by the network device and the communication device, the network device does not need to send the indication information to the communication device.
  • the communication device negotiates with the network device to determine one or more of quantization rules, grouping rules, and feedback rules to use.
  • the network device may indicate at least one rule used by the communication device in various ways, such as a quantification rule, a grouping rule, and a feedback rule. Improves the accuracy of CSI feedback.
  • the G groups are divided based on the indexes of the CSI-RS ports, and the indexes of the CSI-RS ports in different groups are inconsistent;
  • the G groups are divided based on patterns corresponding to CSI-RS ports, and patterns corresponding to CSI-RS ports in different groups are inconsistent; the number of first coefficients corresponding to different CSI-RS ports may or may not be consistent.
  • the numbers of CSI-RS ports corresponding to different patterns may be consistent or inconsistent.
  • the number of patterns corresponding to different groups may be consistent or inconsistent, which is not limited here.
  • the pattern is also referred to as a pilot pattern.
  • the G groups are divided based on CSI-RS resources, wherein one CSI-RS resource corresponds to multiple CSI-RS ports, the number of CSI-RS ports corresponding to different CSI-RS resources is the same or different, and the CSI-RS ports in different groups -
  • the CSI-RS resources corresponding to the RS ports are inconsistent. It should be noted that the number of coefficients corresponding to each CSI-RS port is greater than or equal to 1. The number of first coefficients corresponding to different CSI-RS ports may be consistent or inconsistent. The number of CSI-RS ports corresponding to different resources may be consistent or inconsistent. The number of resources corresponding to different groups may be consistent or inconsistent, which is not limited here.
  • the G groups are divided based on the index of the CSI-RS port and/or the comb index, wherein the comb index is used to identify one or more first coefficients in each CSI-RS port, and the CSI in different groups -
  • the index and/or comb index of the RS ports are inconsistent.
  • combing refers to extracting resource blocks (RBs) at intervals in the frequency domain. For division based on comb points, one CSI-RS resource is still used, and the CSI-RS design is the same as that of R15/R16.
  • the G groups are divided based on the index of the CSI-RS port and/or the index of the delay component, wherein the index of the delay component is used to identify the delay position where the first coefficient is located in each CSI-RS port.
  • the indices of the CSI-RS ports and/or the indices of the delay components in the packets are inconsistent.
  • the G groups are divided based on the index of the CSI-RS port and/or the frequency domain component index, wherein the frequency domain component index is used to identify the frequency domain base corresponding to the first coefficient in each CSI-RS port, and the different The indices of the CSI-RS ports and/or the frequency domain component indices in the packets are inconsistent.
  • the first coefficients can be grouped by using various grouping rules, which improves the implementation flexibility of the solution. Through refined grouping, the accuracy of CSI feedback is improved. It should be noted that different grouping rules can be used for different layers; the same grouping rules can also be used for all layers, that is, the grouping rules of all layers are common; the same grouping rules can also be used for some layers, and different for some layers. The grouping rules are not limited here.
  • the quantization indication information includes:
  • i 2,1,l is the magnitude quantization indication of the strongest coefficient of each grouping in the lth layer, where, is the amplitude quantization indication of the strongest coefficient in the gth packet of the lth layer;
  • i 2,2,l , i 2,2,l is the magnitude quantization indication of the first coefficient of each group in the lth layer, where, is the amplitude quantization indication of the first coefficient in the gth packet of the lth layer; is the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer; i ⁇ 0,...,Ng ,l -1 ⁇ ;
  • l is the index of the layer
  • N g,l is the number of the first coefficients in the gth group of the lth layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • B g,l is the The number of finite values of the strongest coefficient in the gth group of the lth layer after amplitude quantization processing
  • Q g,l is the number of finite values of the first coefficient in the gth group of the lth layer after amplitude quantization processing
  • l is an integer greater than or equal to 1
  • N g,l is an integer greater than or equal to 1
  • g is an integer greater than or equal to
  • g is less than or equal to G-1
  • i is an integer greater than or equal to
  • B g,l is an integer greater than or equal to 1
  • Q g,l is an integer greater than or equal to 1.
  • the “strongest coefficient” in the above grouping refers to the coefficient with the largest energy among the first coefficients in the grouping.
  • the “strongest coefficient” is also for the first coefficient.
  • the quantization indication information includes:
  • c l,g [c l,0,g ... c l,i,g ...c l,Ng,l-1,g ], c l,i,g is the ith group of the gth group of the lth layer
  • Phase quantization indication of a coefficient i ⁇ 0,...,N g,l -1 ⁇ , c l,i,g ⁇ ⁇ 0,...,M g,l -1 ⁇ , Mg ,l is the lth layer
  • N g,l is the number of the first coefficient in the gth group of the lth layer
  • g is an integer greater than or equal to 0 and g is less than or Equal to G-1
  • l is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0.
  • the quantization indication information includes:
  • ⁇ is the maximum number of layers, ⁇ is an integer greater than or equal to 1, P l is the total number of first coefficients in the lth layer, P l is an integer greater than or equal to 1, and l is an integer greater than or equal to 1.
  • the quantization indication information includes:
  • i 1,2,1 is an indication for indicating whether the first coefficient included in the lth layer is non-zero, for example, a bitmap
  • N g,l is the index of the layer
  • N g,l is the number of first coefficients in the gth group of the lth layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is greater than or equal to 1 Integer
  • N g, l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0.
  • the quantification rule includes one or more of the following:
  • the amplitude quantization value obtained after the amplitude quantization of the strongest coefficient in the gth group of the lth layer is
  • mapping rule is the magnitude quantization indication of the strongest coefficient in the g-th packet of the l-th layer, reason
  • the determined amplitude quantization value, f 1,l,g represents the gth packet of the lth layer and The mapping rule between them; the mapping rule can be determined by an amplitude quantization table or function, which is not limited here.
  • the amplitude quantization value obtained by the amplitude quantization of the i-th first coefficient of the g-th packet of the l-th layer is
  • mapping rule can be determined by an amplitude quantization table or function, which is not limited here.
  • the quantification rule includes one or more of the following:
  • bit width used for amplitude quantization processing of the strongest coefficient in the gth packet of the lth layer is:
  • B g,l is the number of finite values of the strongest coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 B g,l ;
  • the bit width used for the amplitude quantization processing of the first coefficient in the gth packet of the lth layer is: Q g,l is the number of finite values of the first coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 Q g,l ;
  • the bit width used for phase quantization processing of the first coefficient in the gth packet of the lth layer is: M g,l is the number of finite values of the first coefficient in the gth group of the lth layer after phase quantization processing, is the rounded-up value of log 2 M g,l .
  • the quantification rule includes:
  • phase quantization value obtained after the ith first coefficient of the ith grouping of the 1st layer carries out the phase quantization process is ⁇ l,i,g ;
  • the quantization phase corresponding to g , f 3, lg represents the mapping rule between the phase of ⁇ l, i, g and c l, i, g in the gth group of the lth layer; the mapping rule can be determined by the phase quantization table or function OK, no restrictions here.
  • l is the index of the layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0 .
  • the quantification rule includes:
  • the quantization indication information of the strongest coefficient is not fed back, the strongest coefficient is normalized, and the position information (index) of the strongest coefficient is fed back.
  • Specific feedback rules including:
  • the communication device does not transmit to the network device and in, is the index of the group where the strongest coefficient of the lth layer is located, and the index of the strongest coefficient of the lth layer in the group g * is The communication device sends i 1,1 to the network device.
  • the feedback rules include one or more of the following:
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and Quantization indication information of the corresponding first coefficient
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and quantization indication information c l,i,g of the corresponding first coefficient;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients Among them, the remaining first coefficients are the first coefficients that do not meet the rules 1)-3) and are not the strongest coefficients, and the amplitude quantization values of the remaining first coefficients satisfy and
  • the communication device does not send the remaining phase quantization indications c l,i,g of the first coefficients that do not meet the rules 1)-3), wherein the remaining first coefficients are those that do not meet the rules 1)-3).
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of non-zero coefficients to be fed back corresponding to the CSI-RS ports in all ⁇ layers is: K NZ ;
  • K NZ is less than or equal to C*K 0 , where K 0 is a value pre-defined by the agreement or protocol between the communication device and the network device, and is used to control the number of feedback coefficients, and C is an integer greater than or equal to 1 .
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and K NZ - ⁇ quantization indication information corresponding to the first coefficient of Quantization indication information sent by the communication device to the network device
  • the number is K NZ - ⁇ , because the position information of the strongest coefficient of each layer has been fed back, so there is no need to feed back the quantization indication information corresponding to the strongest coefficient of each layer;
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and K NZ - ⁇ pieces of quantization indication information c l,i,g corresponding to the first coefficients of .
  • the number of quantization indication information c l, i, g sent by the communication device to the network device is K NZ - ⁇ , because the position information of the strongest coefficient of each layer has been fed back, so there is no need to feed back the corresponding value of the strongest coefficient of each layer.
  • the communication device does not send the amplitude quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 1)-3) and are not the strongest coefficients, and the amplitude quantization values of the remaining PK NZ first coefficients satisfy and
  • the quantization indication information of the strongest coefficient is fed back, and the position information (index) of the strongest coefficient is not fed back.
  • Specific feedback rules including one or more of the following:
  • the communication device does not send i 1,1 to the network device.
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the quantization indication information c l,i,g corresponding to the first coefficient of ;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients
  • the remaining first coefficients are the first coefficients that do not satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining first coefficients satisfy the
  • the communication device does not send the phase quantization indication c l,i,g of the remaining first coefficients, wherein the remaining first coefficients are the first coefficients that do not satisfy rules 6), 7) and 8), and the remaining first coefficients
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of non-zero coefficients to be fed back corresponding to the CSI-RS ports in all ⁇ layers is: K NZ ;
  • K NZ is less than or equal to C*K 0 , where K 0 is a value pre-defined by the agreement or protocol between the communication device and the network device, and is used to control the number of feedback coefficients, and C is an integer greater than or equal to 1 .
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the K NZ pieces of quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the K NZ pieces of quantization indication information c l,i,g corresponding to the first coefficient of ;
  • the communication device does not send the amplitude quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining PK NZ first coefficients satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining PK NZ first coefficients satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining PK NZ first coefficients satisfy the
  • the quantization indication information includes:
  • i 3,1,l , i 3,1,l are the magnitude-phase joint quantization indications of the strongest coefficients of each grouping in the lth layer, where, is the amplitude-phase joint quantization indication of the strongest coefficient in the gth packet of the lth layer; i ⁇ 0,...,Ng ,l -1 ⁇ ;
  • i 3,2,l , i 3,2,l are the amplitude-phase joint quantization indications of the first coefficients of the respective groups in the lth layer, wherein, is the joint quantization indication of the amplitude and phase of the first coefficient in the gth packet of the lth layer; is the joint quantization indication of the amplitude and phase of the first coefficient in the gth packet of the lth layer;
  • l is the index of the layer
  • N g,l is the number of the first coefficients in the gth group of the lth layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • a g,l is The number of finite values of the strongest coefficient in the gth group of the lth layer after the amplitude and phase joint quantization processing is carried out
  • L g,l is the finite value of the first coefficient in the gth group of the lth layer after the amplitude and phase joint quantization processing.
  • N g is an integer greater than or equal to 1
  • g is an integer greater than or equal to 1
  • g is less than or equal to G-1
  • i is an integer greater than or equal to 1
  • a g ,l is an integer greater than or equal to 1
  • L g,l is an integer greater than or equal to 1.
  • the quantification rule includes:
  • the amplitude-phase joint quantization value obtained after the amplitude-phase joint quantization process of the strongest coefficient in the gth group of the lth layer is
  • reason Determined joint quantization value of amplitude and phase, f 4,l,g indicates that in the gth group and Mapping rules between;
  • the magnitude-phase joint quantization value obtained by the amplitude-phase joint quantization of the i-th first coefficient of the g-th packet of the l-th layer is:
  • reason Determined joint quantization value of amplitude and phase, f 5,l,g indicates that in the gth packet of the lth layer and mapping rules between.
  • the quantization indication information of the strongest coefficient is not fed back, the strongest coefficient is normalized, and the position information (index) of the strongest coefficient is fed back.
  • Specific feedback rules including:
  • the communication device does not transmit to the network device and in, is the index of the group where the strongest coefficient of the lth layer is located, and the index of the strongest coefficient of the lth layer in the group g * is
  • the communication device sends i 1,1 to the network device.
  • the feedback rule includes one or more of the following:
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and The quantization indication information corresponding to the first coefficient of
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients Among them, the remaining first coefficients are the first coefficients that do not meet the rules 11)-12) and are not the strongest coefficients, and the amplitude and phase joint quantization values of the remaining first coefficients satisfy the and
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of non-zero coefficients to be fed back corresponding to the CSI-RS ports in all ⁇ layers is: K NZ ;
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and K NZ - ⁇ quantization indication information corresponding to the first coefficient of Quantization indication information sent by the communication device to the network device
  • the number is K NZ - ⁇ , because the position information of the strongest coefficient of each layer has been fed back, so there is no need to feed back the quantization indication information corresponding to the strongest coefficient of each layer;
  • the communication device does not send the amplitude quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 11)-12) and are not the strongest coefficients, and the amplitude and phase joint quantization values of the remaining PK NZ first coefficients satisfy the and
  • the quantization indication information of the strongest coefficient is fed back, and the position information (index) of the strongest coefficient is not fed back.
  • Specific feedback rules including one or more of the following:
  • the communication device does not send i 1,1 to the network device
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device does not send the remaining first coefficient amplitude-phase joint quantization indication
  • the remaining first coefficients are the first coefficients that do not satisfy rules 14) and 15)
  • the amplitude-phase joint quantization values of the remaining first coefficients satisfy the
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends the quantization indication information of the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the K NZ pieces of quantization indication information corresponding to the first coefficient of
  • the communication device does not send the amplitude-phase joint quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 14) and 15), and the amplitude and phase joint quantization values of the remaining PK NZ first coefficients satisfy the
  • the codebook to which the quantization rule applies is:
  • W 1 is a freely chosen matrix, and a special configuration of W 1 is an identity matrix.
  • W 1 is also called a port selection matrix so that K 1 ports are freely selected from among P CSI-RS ports, or K 1/2 ports are freely selected from P/2 CSI-RS ports.
  • P is a positive integer
  • P/2 is a positive integer
  • K 1 is a positive integer
  • P is the number of CSI-RS ports used for port selection.
  • W 2 is a superposition coefficient corresponding to the P CSI-RS ports, and the superposition coefficient is a quantized value obtained by performing quantization processing on the non-zero coefficients of the P CSI-RS ports according to a quantization rule.
  • R is defined as the number of precoding matrix (Precoding Matrix Indicator, PMI) subbands included in each CQI subband.
  • Network devices can be disabled When disabled, is an all-one vector.
  • W 1 is a port selection matrix
  • W 2 is a superposition coefficient corresponding to the P CSI-RS ports
  • the superposition coefficient is a quantized value obtained by performing quantization processing on the non-zero coefficients of the P CSI-RS ports according to a quantization rule.
  • W 1 may also be a compression matrix of discrete Fourier transform DFT, or other space-domain compression matrix, for example: W 1 is a space-frequency joint compression matrix, which is not limited here.
  • the embodiment of the present application proposes an information feedback method, including:
  • the network device receives the quantization feedback information; the quantization feedback information is obtained by the communication device based on the feedback rule and the quantization indication information, and the quantization indication information is obtained by the communication device performing quantization processing on the first coefficients in the G groups based on the Z quantization rules, and the first coefficient The coefficient is the coefficient corresponding to the channel state information-reference signal CSI-RS port; wherein, the Z quantization rules are the quantization rules corresponding to the first coefficients in the G groups, G is an integer greater than 1, and Z is less than or equal to G
  • Each grouping includes one or more first coefficients, and each CSI-RS port corresponds to one or more first coefficients; each grouping uses a quantization rule to carry out quantization processing to obtain quantization indication information;
  • the network device constructs a downlink channel based on the quantization indication information.
  • the information feedback method may be executed by a network device, and the network device may be a network device, or may also be a chip, a chip system or a circuit configured in the network device.
  • the above “receive” may also be understood as "input”.
  • different quantization rules may be used for different first coefficients to achieve non-uniform quantization.
  • the accuracy of CSI feedback is improved.
  • the G first coefficients grouped as global are obtained by grouping based on the grouping rule.
  • the G first coefficients grouped as global are obtained by grouping based on a grouping rule.
  • the global first coefficient may be the first coefficient of all layers, or may be the first coefficient of a certain layer or multiple layers.
  • the first coefficient of the certain layer is divided into G groups.
  • the global first coefficient may also be the first coefficient of all layers, and the first coefficients of all layers are divided into G groups.
  • the first coefficients of each of the all layers are divided into G groups, which are not limited here.
  • Non-uniform quantization is achieved by grouping a plurality of first coefficients. On the premise of less feedback overhead, the accuracy of CSI feedback is improved.
  • the network apparatus sends indication information to the communication apparatus, where the indication information is used to indicate the quantification rule, feedback rule and/or grouping rule used by the communication apparatus.
  • the network device can send the indication information to the communication device in various ways, which are described below:
  • the indication information includes a quantification rule, a grouping rule and/or a feedback rule.
  • the indication information sent by the network device to the communication device includes: quantification rule A, grouping rule A, and feedback rule A.
  • the communication apparatus performs grouping processing on the global first coefficients based on the grouping rule A in the instruction information.
  • the communication device performs quantization processing on the first coefficients in each group based on the quantization rule A in the indication information to obtain quantization indication information.
  • the communication device processes the quantization instruction information based on the feedback rule A in the instruction information, and obtains the quantized feedback information.
  • the indication information includes an index (index) of a quantization rule, an index of a grouping rule, and an index of a feedback rule.
  • the indication information may be indication information with a value of 0 or 1, for example, when the value is 1110, it corresponds to the grouping rule A, and when the value is 1111, it corresponds to the grouping rule B.
  • the indication information may also be in the form of a string "quantization A", or “quantization B”, etc. to indicate one or more of the corresponding quantization rules, grouping rules and feedback rules through specific meanings.
  • the quantification rules, grouping rules and/or feedback rules are preconfigured in the communication device.
  • the pre-configuration may be a protocol agreement, or may be configured by the network device when the communication device accesses the network device for the first time, which is not limited here.
  • the communication device determines one or more of the quantification rule, grouping rule and feedback rule to be used according to the index included in the indication information.
  • the quantification rules, grouping rules and/or feedback rules are preconfigured in the communication device.
  • the pre-configuration may be a protocol agreement, or may be configured by the network device when the communication device accesses the network device for the first time, which is not limited here.
  • the communication device determines one or more of the quantification rule, grouping rule and feedback rule to be used according to the index included in the indication information.
  • the network device may send the indication information to the communication device through the following signaling or messages, including but not limited to: scheduling downlink control information (downlink control information, DCI), radio resource control (radio resource control, RRC) information. command, or media access control sublayer control element signaling (media access control control element, MAC CE).
  • DCI downlink control information
  • RRC radio resource control
  • MAC CE media access control sublayer control element signaling
  • the network device when the protocol pre-stipulates the quantification rules, grouping rules and feedback rules used by the network device and the communication device, the network device does not need to send the indication information to the communication device. In another implementation solution, when the communication device accesses the network device for the first time, the communication device negotiates with the network device to determine the quantification rule, grouping rule and feedback rule to be used.
  • the network device may indicate the quantification rule, grouping rule, and feedback rule used by the communication device in various ways. Improves the accuracy of CSI feedback.
  • the G groups are divided based on the indexes of the CSI-RS ports, and the indexes of the CSI-RS ports in different groups are inconsistent;
  • the G groups are divided based on patterns corresponding to CSI-RS ports, and patterns corresponding to CSI-RS ports in different groups are inconsistent; the number of first coefficients corresponding to different CSI-RS ports may or may not be consistent.
  • the numbers of CSI-RS ports corresponding to different patterns may be consistent or inconsistent.
  • the number of patterns corresponding to different groups may be consistent or inconsistent, which is not limited here.
  • the G groups are divided based on CSI-RS resources, wherein one CSI-RS resource corresponds to multiple CSI-RS ports, different CSI-RS resources include the same or different numbers of ports, and CSI-RS ports in different groups correspond to
  • the CSI-RS resources are inconsistent. It should be noted that the number of coefficients corresponding to each CSI-RS port is greater than or equal to 1. The number of first coefficients corresponding to different CSI-RS ports may be consistent or inconsistent. The number of CSI-RS ports corresponding to different resources may be consistent or inconsistent. The number of resources corresponding to different groups may be consistent or inconsistent, which is not limited here.
  • the G groups are divided based on the index of the CSI-RS port and/or the comb index, wherein the comb index is used to identify one or more first coefficients in each CSI-RS port, and the CSI in different groups -
  • the index and/or comb index of the RS ports are inconsistent.
  • combing refers to extracting resource blocks (RBs) at intervals in the frequency domain. For division based on comb points, one CSI-RS resource is still used, and the CSI-RS design is the same as that of R15/R16.
  • the G groups are divided based on the index of the CSI-RS port and/or the index of the delay component, wherein the index of the delay component is used to identify the delay position where the first coefficient is located in each CSI-RS port.
  • the indices of the CSI-RS ports and/or the indices of the delay components in the packets are inconsistent.
  • the G groups are divided based on the index of the CSI-RS port and/or the frequency domain component index, wherein the frequency domain component index is used to identify the frequency domain base corresponding to the first coefficient in each CSI-RS port, and the different The indices of the CSI-RS ports and/or the frequency domain component indices in the packets are inconsistent.
  • the first coefficients can be grouped by using various grouping rules, which improves the implementation flexibility of the solution. Through refined grouping, the accuracy of CSI feedback is improved.
  • the quantization indication information includes:
  • i 2,1,l is the magnitude quantization indication of the strongest coefficient of each grouping in the lth layer, where, is the amplitude quantization indication of the strongest coefficient in the gth packet of the lth layer;
  • i 2,2,l , i 2,2,l is the magnitude quantization indication of the first coefficient of each group in the lth layer, where, is the amplitude quantization indication of the first coefficient in the gth packet of the lth layer; is the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer; i ⁇ 0,...,Ng ,l -1 ⁇ ;
  • l is the index of the layer
  • N g,l is the number of first coefficients in the gth group of the lth layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • B g,l is the The number of finite values of the strongest coefficient in the gth group of the lth layer after amplitude quantization processing
  • Q g,l is the number of finite values of the first coefficient in the gth group of the lth layer after amplitude quantization processing
  • l is an integer greater than or equal to 1
  • N g,l is an integer greater than or equal to 1
  • g is an integer greater than or equal to
  • g is less than or equal to G-1
  • i is an integer greater than or equal to
  • B g,l is an integer greater than or equal to 1
  • Q g,l is an integer greater than or equal to 1.
  • the quantization indication information includes:
  • c l,g [c l,0,g ... c l,i,g ...c l,Ng,l-1,g ], c l,i,g is the ith group of the gth group of the lth layer
  • Phase quantization indication of a coefficient i ⁇ 0,...,N g,l -1 ⁇ , c l,i,g ⁇ ⁇ 0,...,M g,l -1 ⁇ , Mg ,l is the lth layer
  • N g,l is the number of the first coefficient in the gth group of the lth layer
  • g is an integer greater than or equal to 0 and g is less than or Equal to G-1
  • l is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0.
  • the quantization indication information includes:
  • ⁇ is the maximum number of layers, ⁇ is an integer greater than or equal to 1, P l is the total number of first coefficients in the lth layer, P l is an integer greater than or equal to 1, and l is an integer greater than or equal to 1.
  • the quantization indication information includes:
  • i 1,2,1 is a bitmap used to indicate whether the first coefficient included in the lth layer is non-zero
  • N g,l is the index of the layer
  • N g,l is the number of first coefficients in the gth group of the lth layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is greater than or equal to 1 Integer
  • N g, l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0.
  • the quantification rule includes one or more of the following:
  • the amplitude quantization value obtained after the amplitude quantization of the strongest coefficient in the gth group of the lth layer is
  • mapping rule is the magnitude quantization indication of the strongest coefficient in the g-th packet of the l-th layer, reason
  • the determined amplitude quantization value, f 1,l,g represents the gth packet of the lth layer and The mapping rule between them; the mapping rule can be determined by an amplitude quantization table or function, which is not limited here.
  • the amplitude quantization value obtained by the amplitude quantization of the i-th first coefficient of the g-th packet of the l-th layer is
  • mapping rule can be determined by an amplitude quantization table or function, which is not limited here.
  • the quantification rule includes one or more of the following:
  • bit width used for amplitude quantization processing of the strongest coefficient in the gth packet of the lth layer is:
  • B g,l is the number of finite values of the strongest coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 B g,l ;
  • the bit width used for the amplitude quantization processing of the first coefficient in the gth packet of the lth layer is: Q g,l is the number of finite values of the first coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 Q g,l ;
  • the bit width used for phase quantization processing of the first coefficient in the gth packet of the lth layer is: M g,l is the number of finite values of the first coefficient in the gth group of the lth layer after phase quantization processing, is the rounded-up value of log 2 M g,l .
  • the quantification rule includes:
  • phase quantization value obtained after the ith first coefficient of the ith grouping of the 1st layer carries out the phase quantization process is ⁇ l,i,g ;
  • the quantization phase corresponding to g , f 3, lg represents the mapping rule between the phase of ⁇ l, i, g and c l, i, g in the gth group of the lth layer; the mapping rule can be determined by the phase quantization table or function OK, no restrictions here.
  • l is the index of the layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0 .
  • the quantification rule includes:
  • the quantization indication information of the strongest coefficient is not fed back, the strongest coefficient is normalized, and the position information (index) of the strongest coefficient is fed back.
  • Specific feedback rules including:
  • the communication device does not transmit to the network device and in, is the index of the group where the strongest coefficient of the lth layer is located, and the index of the strongest coefficient of the lth layer in the group g * is The communication device sends i 1,1 to the network device.
  • the feedback rule includes:
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and Quantization indication information of the corresponding first coefficient
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and quantization indication information c l,i,g of the corresponding first coefficient;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients Among them, the remaining first coefficients are the first coefficients that do not meet the rules 1)-3) and are not the strongest coefficients, and the amplitude quantization values of the remaining first coefficients satisfy and
  • the communication device does not send the remaining phase quantization indications c l,i,g of the first coefficients that do not meet the rules 1)-3), wherein the remaining first coefficients are those that do not meet the rules 1)-3).
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of non-zero coefficients to be fed back corresponding to the CSI-RS ports in all ⁇ layers is: K NZ ;
  • K NZ is less than or equal to C*K 0 , where K 0 is a value pre-defined in the agreement or protocol between the communication device and the network device, and is used to control the number of feedback coefficients, and C is an integer greater than or equal to 1 .
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and K NZ - ⁇ quantization indication information corresponding to the first coefficient of Quantization indication information sent by the communication device to the network device
  • the number is K NZ - ⁇ , because the position information of the strongest coefficient of each layer has been fed back, so there is no need to feed back the quantization indication information corresponding to the strongest coefficient of each layer;
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and K NZ - ⁇ pieces of quantization indication information c l,i,g corresponding to the first coefficients of .
  • the number of quantization indication information c l, i, g sent by the communication device to the network device is K NZ - ⁇ , because the position information of the strongest coefficient of each layer has been fed back, so there is no need to feed back the corresponding value of the strongest coefficient of each layer.
  • the communication device does not send the amplitude quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 1)-3) and are not the strongest coefficients, and the amplitude quantization values of the remaining PK NZ first coefficients satisfy and
  • the quantization indication information of the strongest coefficient is fed back, and the position information (index) of the strongest coefficient is not fed back.
  • Specific feedback rules including one or more of the following:
  • the communication device does not send i 1,1 to the network device.
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the quantization indication information c l,i,g corresponding to the first coefficient of ;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients
  • the remaining first coefficients are the first coefficients that do not satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining first coefficients satisfy the
  • the communication device does not send the phase quantization indication c l,i,g of the remaining first coefficients, wherein the remaining first coefficients are the first coefficients that do not satisfy rules 6), 7) and 8), and the remaining first coefficients
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of non-zero coefficients to be fed back corresponding to the CSI-RS ports in all ⁇ layers is: K NZ ;
  • K NZ is less than or equal to C*K 0 , where K 0 is a value pre-defined by the agreement or protocol between the communication device and the network device, and is used to control the number of feedback coefficients, and C is an integer greater than or equal to 1 .
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the K NZ pieces of quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the K NZ pieces of quantization indication information c l,i,g corresponding to the first coefficient of ;
  • the communication device does not send the amplitude quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining PK NZ first coefficients satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining PK NZ first coefficients satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining PK NZ first coefficients satisfy the
  • the quantization indication information includes:
  • i 3,1,l , i 3,1,l are the magnitude-phase joint quantization indications of the strongest coefficients of each grouping in the lth layer, where, is the amplitude-phase joint quantization indication of the strongest coefficient in the gth packet of the lth layer; i ⁇ 0,...,Ng ,l -1 ⁇ ;
  • i 3,2,l , i 3,2,l are the amplitude-phase joint quantization indications of the first coefficients of the respective groups in the lth layer, wherein, is the joint quantization indication of the amplitude and phase of the first coefficient in the gth packet of the lth layer; is the joint quantization indication of the amplitude and phase of the first coefficient in the gth packet of the lth layer;
  • N g,l is the index of the layer
  • N g,l is the number of the first coefficients in the gth group of the lth layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • a g,l is The number of finite values of the strongest coefficients in the g-th group after the amplitude and phase joint quantization processing is performed
  • L g,l is the number of finite values of the first coefficient in the g-th group after the amplitude and phase joint quantization processing
  • l is greater than or equal to 0
  • N g is an integer greater than or equal to 1
  • g is an integer greater than or equal to
  • g is less than or equal to G-1
  • i is an integer greater than or equal to
  • L g,l is an integer greater than or equal to 1.
  • the quantification rule includes:
  • the amplitude-phase joint quantization value obtained after the amplitude-phase joint quantization process of the strongest coefficient in the gth group of the lth layer is
  • reason Determined joint quantization value of amplitude and phase, f 4,l,g indicates that in the gth group and Mapping rules between;
  • the magnitude-phase joint quantization value obtained by the amplitude-phase joint quantization of the i-th first coefficient of the g-th packet of the l-th layer is:
  • reason Determined joint quantization value of amplitude and phase, f 5,l,g indicates that in the gth group and mapping rules between.
  • the quantization indication information of the strongest coefficient is not fed back, the strongest coefficient is normalized, and the position information (index) of the strongest coefficient is fed back.
  • Specific feedback rules including:
  • the communication device does not transmit to the network device and in, is the index of the group where the strongest coefficient of the lth layer is located, and the index of the strongest coefficient of the lth layer in the group g * is
  • the communication device sends i 1,1 to the network device.
  • the specific feedback rules include one or more of the following:
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and The quantization indication information corresponding to the first coefficient of
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients Among them, the remaining first coefficients are the first coefficients that do not meet the rules 11)-12) and are not the strongest coefficients, and the amplitude and phase joint quantization values of the remaining first coefficients satisfy the and
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of non-zero coefficients to be fed back corresponding to the CSI-RS ports in all ⁇ layers is: K NZ ;
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and K NZ - ⁇ quantization indication information corresponding to the first coefficient of Quantization indication information sent by the communication device to the network device
  • the number is K NZ - ⁇ , because the position information of the strongest coefficient of each layer has been fed back, so there is no need to feed back the quantization indication information corresponding to the strongest coefficient of each layer;
  • the communication device does not send the amplitude quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 11)-12) and are not the strongest coefficients, and the amplitude and phase joint quantization values of the remaining PK NZ first coefficients satisfy the and
  • the quantization indication information of the strongest coefficient is fed back, and the position information (index) of the strongest coefficient is not fed back.
  • Specific feedback rules including one or more of the following:
  • the communication device does not send i 1,1 to the network device
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device does not send the remaining first coefficient amplitude-phase joint quantization indication
  • the remaining first coefficients are the first coefficients that do not satisfy rules 14) and 15)
  • the amplitude-phase joint quantization values of the remaining first coefficients satisfy the
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of non-zero coefficients to be fed back corresponding to the CSI-RS ports in all ⁇ layers is: K NZ ;
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends the quantization indication information of the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the K NZ pieces of quantization indication information corresponding to the first coefficient of
  • the communication device does not send the amplitude-phase joint quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 14) and 15), and the amplitude and phase joint quantization values of the remaining PK NZ first coefficients satisfy the
  • the codebook to which the quantization rule applies is:
  • W 1 is a freely chosen matrix, and a special configuration of W 1 is an identity matrix.
  • W 1 is also called a port selection matrix so that K 1 ports are freely selected from among P CSI-RS ports, or K 1/2 ports are freely selected from P/2 CSI-RS ports.
  • P is a positive integer
  • P/2 is a positive integer
  • K 1 is a positive integer
  • P is the number of CSI-RS ports used for port selection.
  • W 2 is a superposition coefficient corresponding to the P CSI-RS ports, and the superposition coefficient is a quantized value obtained by performing quantization processing on the non-zero coefficients of the P CSI-RS ports according to a quantization rule.
  • R is defined as the number of precoding matrix (Precoding Matrix Indicator, PMI) subbands included in each CQI subband.
  • Network devices can be disabled When disabled, is an all-one vector.
  • W 1 is a port selection matrix
  • W 2 is a superposition coefficient corresponding to the P CSI-RS ports
  • the superposition coefficient is a quantized value obtained by performing quantization processing on the non-zero coefficients of the P CSI-RS ports according to a quantization rule.
  • W 1 may also be a compression matrix of discrete Fourier transform DFT, or other space-domain compression matrix, for example: W 1 is a space-frequency joint compression matrix, which is not limited here.
  • an embodiment of the present application provides a communication device, including:
  • a processing module configured to perform quantization processing on the first coefficients in the G groups based on the Z quantization rules to obtain quantization indication information, where the first coefficients are channel state information-reference signals (channel state information-reference signal, CSI-RS)
  • the coefficient corresponding to the port (port) wherein the Z quantization rules are the quantization rules corresponding to the first coefficients in the G groups, G is an integer greater than 1, and Z is a positive integer less than or equal to G; each group includes one or more first coefficients, each CSI-RS port corresponds to one or more first coefficients;
  • Each group is quantized using a quantization rule to obtain quantization indication information
  • the processing module is further configured to determine the quantitative feedback information based on the quantitative indication information and the feedback rule.
  • the communication apparatus is a terminal device, and the processing module may be a processor.
  • the communication device may further include a transceiver.
  • the communication device is a chip, a chip system or a circuit configured in a terminal device.
  • the processing module may be a processor, a processing circuit, a logic circuit, or the like.
  • the communication device may further include a transceiver module, and the transceiver module may be an input and/or output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip, chip system or circuit. Wait.
  • the G first coefficients grouped globally are obtained by grouping based on a grouping rule.
  • the transceiver module is used for the network device to send the quantized feedback information.
  • the transceiver module is further configured to receive indication information from the network device, where the indication information is used to instruct the quantification rule, feedback rule and/or grouping rule used by the communication apparatus.
  • the grouping rules include:
  • the G groups are divided based on the indexes of the CSI-RS ports, and the indexes of the CSI-RS ports in different groups are inconsistent;
  • the G groups are divided based on the patterns corresponding to the CSI-RS ports, and the patterns corresponding to the CSI-RS ports in different groups are inconsistent;
  • the G groups are divided based on CSI-RS resources, wherein one CSI-RS resource corresponds to multiple CSI-RS ports, different CSI-RS resources include the same or different numbers of ports, and the CSI corresponding to the CSI-RS ports in different groups -RS resources are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the comb index, wherein the comb index is used to identify one or more first coefficients in each CSI-RS port, and the CSI-RS in different groups
  • the port index and/or comb index are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the index of the delay component, wherein the index of the delay component is used to identify the delay position where the first coefficient is located in each CSI-RS port.
  • the indices and/or delay component indices of the CSI-RS ports in the CSI-RS port are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the frequency domain component index, wherein the frequency domain component index is used to identify the frequency domain base corresponding to the first coefficient in each CSI-RS port, and different groups
  • the indices of the CSI-RS ports and/or the frequency domain component indices are inconsistent.
  • the quantization processing includes: amplitude quantization processing, phase quantization processing, and/or amplitude-phase joint quantization processing.
  • the quantization indication information includes:
  • i 2,1,l is the magnitude quantization indication of the strongest coefficient of each grouping in the lth layer, where, is the amplitude quantization indication of the strongest coefficient in the gth packet of the lth layer;
  • i 2,2,l , i 2,2,l is the magnitude quantization indication of the first coefficient of each group in the lth layer, where, is the amplitude quantization indication of the first coefficient in the gth packet of the lth layer; is the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer; i ⁇ 0,...,Ng ,l -1 ⁇ ;
  • l is the index of the layer
  • N g,l is the number of first coefficients in the gth group
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • B g,l is the gth
  • N g,l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 0
  • g is less than or equal to G-1
  • i is an integer greater than or equal to
  • B g,l is an integer greater than or equal to 1
  • Q g, l are integers greater than or equal to 1.
  • the quantization indication information includes:
  • c l,g [c l,0,g ... c l,i,g ...c l,Ng-1,g ], c l,i,g is the i-th first coefficient of the g-th grouping of the l-th layer
  • the phase quantization indication of , i ⁇ 0,...,N g,l -1 ⁇ , c l,i,g ⁇ 0,...,M g,l -1 ⁇ , M g,l is the lth layer g
  • N g,l is the number of first coefficients in the gth group of the lth layer
  • g is an integer greater than or equal to 0 and g is less than or equal to G -1
  • l is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0.
  • the quantization indication information includes:
  • ⁇ is the maximum number of layers, ⁇ is an integer greater than or equal to 1, P l is the total number of first coefficients in the lth layer, P l is an integer greater than or equal to 1, and l is an integer greater than or equal to 1.
  • the quantization indication information includes:
  • i 1,2,1 is a bitmap used to indicate whether the first coefficient included in the lth layer is non-zero
  • l is the index of the layer
  • N g, l is the number of the first coefficients in the gth group
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • N g, l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 0, and i is an integer greater than or equal to 0.
  • the quantification rules include one or more of the following:
  • the amplitude quantization value obtained after the amplitude quantization of the strongest coefficient in the gth group of the lth layer is
  • the amplitude quantization value obtained by the amplitude quantization of the i-th first coefficient of the g-th packet of the l-th layer is
  • f 2,l,g the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer, reason
  • the determined amplitude quantization value, f 2,l,g represents the gth packet of the lth layer and mapping rules between.
  • the quantification rules include one or more of the following:
  • bit width used for amplitude quantization processing of the strongest coefficient in the gth packet of the lth layer is:
  • B g,l is the number of finite values of the strongest coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 B g,l ;
  • the bit width used for the amplitude quantization processing of the first coefficient in the gth packet of the lth layer is: Q g,l is the number of finite values of the first coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 Q g,l ;
  • the bit width used for phase quantization processing of the first coefficient in the gth packet of the lth layer is: M g,l is the number of finite values of the first coefficient in the gth group of the lth layer after phase quantization processing, is the rounded-up value of log 2 M g,l .
  • the quantification rules include:
  • phase quantization value obtained after the ith first coefficient of the ith grouping of the 1st layer carries out the phase quantization process is ⁇ l,i,g ;
  • l is the index of the layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0 .
  • the quantification rules include:
  • the feedback rules include:
  • the communication device does not transmit to the network device and in, is the index of the group where the strongest coefficient of the lth layer is located, and the index of the strongest coefficient of the lth layer in the group g * is
  • the communication device sends i 1,1 to the network device.
  • the feedback rules include:
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and Quantization indication information of the corresponding first coefficient
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and quantization indication information c l,i,g of the corresponding first coefficient;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients Among them, the remaining first coefficients are the first coefficients that do not meet the rules 1)-3) and are not the strongest coefficients, and the amplitude quantization values of the remaining first coefficients satisfy and
  • the communication device does not send the remaining phase quantization indications c l,i,g of the first coefficients that do not meet the rules 1)-3), wherein the remaining first coefficients are those that do not meet the rules 1)-3).
  • the feedback rules include:
  • the communication device does not send i 1,1 to the network device.
  • the feedback rules include:
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the quantization indication information c l,i,g corresponding to the first coefficient of ;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients
  • the remaining first coefficients are the first coefficients that do not satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining first coefficients satisfy the
  • the communication device does not send the phase quantization indication c l,i,g of the remaining first coefficients, wherein the remaining first coefficients are the first coefficients that do not satisfy rules 6), 7) and 8), and the remaining first coefficients
  • an embodiment of the present application provides a network device network device, including:
  • the quantization feedback information is obtained by the communication device based on the feedback rule and the quantization indication information
  • the quantization indication information is obtained by the communication device quantizing the first coefficients in the G groups based on the Z quantization rules
  • the first coefficient is the channel state information-reference
  • the G grouped first coefficients are obtained by grouping based on the grouping rule; wherein, the Z quantization rules are described in the G groupings
  • the quantization rule corresponding to the first coefficient, G is an integer greater than 1, and Z is a positive integer less than or equal to G; each group includes one or more first coefficients, and each CSI-RS port corresponds to one or more first coefficients coefficient;
  • Each group is quantized using a quantization rule to obtain quantization indication information
  • the processing module is configured to construct a downlink channel based on the quantization indication information.
  • the network device is a network device
  • the processing module may be a processor
  • the transceiver module may be a transceiver
  • the network device is a chip, a system-on-chip or a circuit configured in the network device.
  • the processing module may be a processor, a processing circuit, a logic circuit, or the like.
  • the transceiver module may be an input and/or output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit, etc. on the chip, a chip system or a circuit.
  • the above “receive” may also be understood as "input”.
  • the transceiver module is further configured to send indication information to the communication apparatus, where the indication information is used to indicate the quantification rule, feedback rule and/or grouping rule used by the communication apparatus.
  • the grouping rules include:
  • the G groups are divided based on the indexes of the CSI-RS ports, and the indexes of the CSI-RS ports in different groups are inconsistent;
  • the G groups are divided based on the patterns corresponding to the CSI-RS ports, and the patterns corresponding to the CSI-RS ports in different groups are inconsistent;
  • the G groups are divided based on CSI-RS resources, wherein one CSI-RS resource corresponds to multiple CSI-RS ports, different CSI-RS resources include the same or different numbers of ports, and the CSI corresponding to the CSI-RS ports in different groups -RS resources are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the comb index, wherein the comb index is used to identify one or more first coefficients in each CSI-RS port, and the CSI-RS in different groups
  • the port index and/or comb index are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the index of the delay component, wherein the index of the delay component is used to identify the delay position of the first coefficient in each CSI-RS port.
  • the indices and/or delay component indices of the CSI-RS ports in the CSI-RS port are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the frequency domain component index, wherein the frequency domain component index is used to identify the frequency domain base corresponding to the first coefficient in each CSI-RS port.
  • the indices of the CSI-RS ports and/or the frequency domain component indices are inconsistent.
  • the quantization processing includes: amplitude quantization processing, phase quantization processing, and/or amplitude-phase joint quantization processing.
  • the quantization indication information includes:
  • i 2,1,l is the magnitude quantization indication of the strongest coefficient of each grouping in the lth layer, where, is the amplitude quantization indication of the strongest coefficient in the gth packet of the lth layer;
  • i 2,2,l , i 2,2,l is the magnitude quantization indication of the first coefficient of each group in the lth layer, where, is the amplitude quantization indication of the first coefficient in the gth packet of the lth layer; is the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer; i ⁇ 0,...,Ng ,l -1 ⁇ ;
  • l is the index of the layer
  • N g,l is the number of first coefficients in the gth group
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • B g,l is the gth
  • N g,l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 0
  • g is less than or equal to G-1
  • i is an integer greater than or equal to
  • B g,l is an integer greater than or equal to 1
  • Q g, l are integers greater than or equal to 1.
  • the quantization indication information includes:
  • c l,g [c l,0,g ... c l,i,g ...c l,Ng-1,g ], c l,i,g is the i-th first coefficient of the g-th grouping of the l-th layer
  • the phase quantization indication of , i ⁇ 0,...,N g,l -1 ⁇ , c l,i,g ⁇ 0,...,M g,l -1 ⁇ , M g,l is the lth layer g
  • N g,l is the number of first coefficients in the gth group of the lth layer
  • g is an integer greater than or equal to 0 and g is less than or equal to G -1
  • l is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0.
  • the quantization indication information includes:
  • ⁇ is the maximum number of layers, ⁇ is an integer greater than or equal to 1, P l is the total number of first coefficients in the lth layer, P l is an integer greater than or equal to 1, and l is an integer greater than or equal to 1.
  • the quantization indication information includes:
  • i 1,2,1 is a bitmap used to indicate whether the first coefficient included in the lth layer is non-zero
  • l is the index of the layer
  • N g, l is the number of the first coefficients in the gth group
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • N g, l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 0, and i is an integer greater than or equal to 0.
  • the quantification rules include one or more of the following:
  • the amplitude quantization value obtained after the amplitude quantization of the strongest coefficient in the gth group of the lth layer is
  • the amplitude quantization value obtained by the amplitude quantization of the i-th first coefficient of the g-th packet of the l-th layer is
  • f 2,l,g the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer, reason
  • the determined amplitude quantization value, f 2,l,g represents the gth packet of the lth layer and mapping rules between.
  • the quantification rules include one or more of the following:
  • bit width used for amplitude quantization processing of the strongest coefficient in the gth packet of the lth layer is:
  • B g,l is the number of finite values of the strongest coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 B g,l ;
  • the bit width used for the amplitude quantization processing of the first coefficient in the gth packet of the lth layer is: Q g,l is the number of finite values of the first coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 Q g,l ;
  • the bit width used for phase quantization processing of the first coefficient in the gth packet of the lth layer is: M g,l is the number of finite values of the first coefficient in the gth group of the lth layer after phase quantization processing, is the rounded-up value of log 2 M g,l .
  • the quantification rules include:
  • phase quantization value obtained after the ith first coefficient of the ith grouping of the 1st layer carries out the phase quantization process is ⁇ l,i,g ;
  • l is the index of the layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0 .
  • the quantification rules include:
  • the feedback rules include:
  • the communication device does not transmit to the network device and in, is the index of the group where the strongest coefficient of the lth layer is located, and the index of the strongest coefficient of the lth layer in the group g * is
  • the communication device sends i 1,1 to the network device.
  • the feedback rules include:
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and Quantization indication information of the corresponding first coefficient
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and quantization indication information c l,i,g of the corresponding first coefficient;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients Among them, the remaining first coefficients are the first coefficients that do not meet the rules 1)-3) and are not the strongest coefficients, and the amplitude quantization values of the remaining first coefficients satisfy and
  • the communication device does not send the remaining phase quantization indications c l,i,g of the first coefficients that do not meet the rules 1)-3), wherein the remaining first coefficients are those that do not meet the rules 1)-3).
  • the feedback rules include:
  • the communication device does not send i 1,1 to the network device.
  • the feedback rules include:
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the quantization indication information c l,i,g corresponding to the first coefficient of ;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients
  • the remaining first coefficients are the first coefficients that do not satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining first coefficients satisfy the
  • the communication device does not send the phase quantization indication c l,i,g of the remaining first coefficients, wherein the remaining first coefficients are the first coefficients that do not satisfy rules 6), 7) and 8), and the remaining first coefficients
  • a communication apparatus for implementing the above-mentioned various methods.
  • the communication device may be the communication device or the network device in the first aspect to the second aspect, or a device including the network device or the communication device, or the network device or the device included in the communication device, such as a system chip .
  • the communication device provided in the fifth aspect includes corresponding modules, units, or means for implementing the above method, and the modules, units, or means may be implemented by hardware, software, or by executing corresponding software in hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • a communication device comprising: a processor and a memory; the memory is used for storing computer instructions, and when the processor executes the instructions, the communication device executes the method of any one of the above-mentioned aspects.
  • the communication device may be the communication device or the network device in the first aspect to the second aspect, or a device including the network device or the communication device, or the network device or the device included in the communication device, such as a system chip .
  • a communication device comprising: a processor; the processor is configured to be coupled to a memory, and after reading an instruction in the memory, execute the method according to any of the above-mentioned aspects according to the instruction, and the memory and the communication device communicate with each other.
  • the communication device may be the communication device or the network device in the first aspect to the second aspect, or a device including the network device or the communication device, or the network device or the device included in the communication device, such as a system chip .
  • a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium, and when the instructions are executed on a communication device, the communication device can perform the method of any one of the above-mentioned aspects.
  • the communication device may be the communication device or the network device in the first aspect to the second aspect, or a device including the network device or the communication device, or the network device or the device included in the communication device, such as a system chip .
  • a computer program product comprising instructions which, when executed on a communication device, enable the communication device to perform the method of any of the above aspects.
  • the communication device may be the communication device or the network device in the first aspect to the second aspect, or a device including the network device or the communication device, or the network device or the device included in the communication device, such as a system chip .
  • a tenth aspect provides a communication apparatus (for example, the communication apparatus may be a chip or a chip system), the communication apparatus includes a processor for implementing the functions involved in any of the above aspects.
  • the communication device further includes a memory for storing necessary program instructions and data.
  • the communication device is a chip system, it may be constituted by a chip, or may include a chip and other discrete devices.
  • a chip including a processor and a communication interface for communicating with modules other than the chip shown, the processor for running a computer program or An apparatus may perform the method of any of the above aspects.
  • the technical effects brought by any one of the design methods in the third aspect to the eleventh aspect can refer to the technical effects brought by different design methods in the first aspect or the second aspect, which will not be repeated here.
  • a twelfth aspect provides a communication system, where the communication system includes the communication device of the above aspect, and/or a network device.
  • FIG. 1a is a schematic diagram of an application scenario proposed by an embodiment of the application.
  • FIG. 1b is a schematic diagram of another application scenario proposed by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a hardware structure of a communication device in an embodiment of the present application.
  • Fig. 3a is a kind of structural representation of R16 codebook
  • Fig. 3b is another kind of structural schematic diagram of R16 codebook
  • FIG. 4 is a schematic diagram of a combination coefficient of an R16 codebook
  • FIG. 5 is a schematic diagram of an embodiment of a channel feedback information method in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a grouping in an embodiment of the present application.
  • FIG. 7 is another schematic diagram of grouping in the embodiment of the present application.
  • FIG. 8 is another schematic diagram of grouping in an embodiment of the present application.
  • FIG. 9 is another schematic diagram of grouping in the embodiment of the application.
  • FIG. 10 is a schematic diagram of a simulation experiment result in the embodiment of the application.
  • FIG. 11 is a schematic diagram of another simulation experiment result in the embodiment of the application.
  • FIG. 12 is a schematic diagram of an embodiment of a communication device in an embodiment of the present application.
  • FIG. 13 is a schematic diagram of an embodiment of a network device in an embodiment of the present application.
  • At least one item(s) below or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • at least one item (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple .
  • LTE Long Term Evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX WiMAX
  • 5G fifth generation
  • NR NR
  • future sixth generation communication system etc.
  • the part of various communication systems that is operated by an operator may be referred to as an operator network.
  • the operator network also known as the PLMN network, is a network established and operated by the government or government-approved operators for the purpose of providing land mobile communication services to the public, mainly mobile network operators (MNOs).
  • MNOs mobile network operators
  • the operator network or PLMN network described in the embodiments of this application may be a network that meets the requirements of the 3rd generation partnership project (3rd generation partnership project, 3GPP) standard, which is referred to as a 3GPP network for short.
  • 3GPP networks are operated by operators, including but not limited to fifth generation mobile communications
  • 5G network 5th-generation, 5G network
  • 4G network fourth-generation mobile communication (4th-generation, 4G) network
  • 3G network third-generation mobile communication technology
  • an operator network such as a mobile network operator (mobile network operator, MNO) network
  • MNO mobile network operator
  • FIG. 1a is a schematic diagram of an application scenario proposed by an embodiment of the present application.
  • the sending end involved in the embodiment of the present application may be a network device, and the receiving end may be a terminal device.
  • the sending end involved in the embodiment of the present application may be a terminal device, and the receiving end may be a network device.
  • FIG. 1b is a schematic diagram of another application scenario proposed by an embodiment of the present application.
  • the sending end involved in the embodiment of the present application may be a terminal device, and the receiving end may be another terminal device that establishes a communication connection with the sending end.
  • An implementation manner of the communication apparatus involved in the embodiments of the present application is a terminal device, and the terminal device may also be referred to as user equipment (user equipment, UE).
  • the terminal device involved in the embodiments of the present application can communicate with one or more core networks (core networks, CN) via an access network device in a network device.
  • core networks CN
  • a terminal device may also be referred to as an access terminal, terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless network device, user agent, or user device, and the like.
  • Terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; can also be deployed on water (such as ships, etc.); can also be deployed in the air (such as aircraft, balloons and satellites, etc.).
  • the terminal device can be a cellular phone (cellular phone), a cordless phone, a session initiation protocol (SIP) phone, a smart phone (smart phone), a mobile phone (mobile phone), a wireless local loop (WLL) station, personal digital assistant (PDA), which can be a wireless communication-capable handheld device, computing device or other device connected to a wireless modem, in-vehicle device, wearable device, drone device or Internet of Things, car Terminals in networking, fifth generation (5G) networks, and any form of terminals in future networks, relay user equipment, or future evolved public land mobile networks (PLMN) A terminal, etc., where the relay user equipment may be, for example, a 5G home gateway (residential gateway, RG).
  • 5G home gateway residential gateway, RG
  • the terminal device can be a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving (self driving), telemedicine Wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home wireless terminals, etc.
  • VR virtual reality
  • AR augmented reality
  • WLAN wireless terminal in industrial control
  • self-driving self driving
  • telemedicine Wireless terminals in remote medical wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home wireless terminals, etc.
  • This embodiment of the present application does not limit this.
  • a network device can be regarded as a sub-network of an operator's network, and is an implementation system between a service node and a terminal device in the operator's network.
  • the terminal equipment To access the operator's network, the terminal equipment first passes through the network device, and then can be connected to the service node of the operator's network through the network device.
  • the network device in the embodiments of the present application is a device that provides a wireless communication function for a terminal device, and may also be referred to as a (radio) access network ((R)AN).
  • Network devices include but are not limited to: next generation node base station (gNB) in 5G system, evolved node B (evolved node B, eNB) in long term evolution (LTE), wireless network Controller (radio network controller, RNC), node B (node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), base band unit (BBU), transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), small base station equipment (pico), mobile switching center, or Network devices in future networks, etc.
  • gNB next generation node base station
  • eNB evolved node B
  • LTE long term evolution
  • RNC wireless network Controller
  • node B node B
  • base station controller base station controller
  • BTS base transceiver station
  • home base station for example, home evolved nodeB, or home node B
  • An information feedback method provided in this application can be applied to various communication systems, for example, the Internet of Things (IoT), Narrow Band Internet of Things (NB-IoT), Long Term Evolution ( long term evolution, LTE), it can also be the fifth generation (5G) communication system, it can also be a hybrid architecture of LTE and 5G, it can also be a 5G new radio (NR) system, and new technologies emerging in future communication development. communication systems, etc.
  • the 5G communication system of the present application may include at least one of a non-standalone (NSA) 5G communication system and an independent (standalone, SA) 5G communication system.
  • the communication system may also be a public land mobile network (PLMN) network, a device-to-device (D2D) network, a machine-to-machine (M2M) network, or other networks.
  • PLMN public land mobile network
  • D2D device-to-device
  • M2M machine-to-machine
  • embodiments of the present application may also be applicable to other future-oriented communication technologies, such as 6G and the like.
  • the network architecture and service scenarios described in this application are for the purpose of illustrating the technical solutions of this application more clearly, and do not constitute a limitation on the technical solutions provided by this application. appears, the technical solutions provided in this application are also applicable to similar technical problems.
  • FIG. 2 is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present application.
  • the hardware structure of the network device in the embodiment of the present application is similar to that of the communication device, and details are not described here.
  • the communication device may also be implemented by a chip system.
  • the communication apparatus includes at least a processor 204 , a memory 203 , and a transceiver 202 , and the memory 203 is further configured to store instructions 2031 and data 2032 .
  • the communication device may further include an antenna 206 , an I/O (input/output, Input/Output) interface 210 and a bus 212 .
  • I/O input/output, Input/Output
  • the transceiver 202 further includes a transmitter 2021 and a receiver 2022.
  • the processor 204 , the transceiver 202 , the memory 203 and the I/O interface 210 are communicatively connected to each other through the bus 212 , and the antenna 206 is connected to the transceiver 202 .
  • the processor 204 can be a general-purpose processor, such as, but not limited to, a central processing unit (Central Processing Unit, CPU), or can be a special-purpose processor, such as, but not limited to, a digital signal processor (Digital Signal Processor, DSP), application Application Specific Integrated Circuit (ASIC) and Field Programmable Gate Array (FPGA), etc.
  • the processor 204 may also be a neural network processing unit (NPU).
  • the processor 204 may also be a combination of multiple processors.
  • the processor 204 may be configured to execute the relevant steps of an information feedback method in subsequent method embodiments.
  • the processor 204 may be a processor specially designed to perform the above steps and/or operations, or may be a processor that performs the above steps and/or operations by reading and executing the instructions 2031 stored in the memory 203, the processor 204 Data 2032 may be required in performing the steps and/or operations described above.
  • the transceiver 202 includes a transmitter 2021 and a receiver 2022 .
  • the transmitter 2021 is used to transmit signals through the antenna 206 .
  • the receiver 2022 is used to receive signals through at least one of the antennas 206 .
  • the transmitter 2021 may be specifically configured to be executed by at least one antenna among the antennas 206.
  • an information feedback method is applied to a network device. When a network device or a communication device is used, the operation performed by the receiving module or the sending module in the network device or the communication device.
  • the transceiver 202 is configured to support the communication device to perform the aforementioned receiving function and sending function.
  • a processor with processing capabilities is considered processor 204 .
  • the receiver 2022 may also be referred to as an input port, a receiving circuit, or the like, and the transmitter 2021 may be referred to as a transmitting port or a transmitting circuit, or the like.
  • the processor 204 may be configured to execute the instructions stored in the memory 203 to control the transceiver 202 to receive messages and/or send messages, so as to complete the function of the communication device in the method embodiment of the present application.
  • the function of the transceiver 202 may be implemented by a transceiver circuit or a dedicated chip for transceiver.
  • receiving a message by the transceiver 202 may be understood as an input message by the transceiver 202
  • sending a message by the transceiver 202 may be understood as an output message by the transceiver 202 .
  • the memory 203 may be various types of storage media, such as random access memory (Random Access Memory, RAM), read only memory (Read Only Memory, ROM), non-volatile RAM (Non-Volatile RAM, NVRAM), and Programmable ROM (Programmable ROM, PROM), Erasable PROM (Erasable PROM, EPROM), Electrically Erasable PROM (Electrically Erasable PROM, EEPROM), Flash memory, optical memory and registers, etc.
  • the memory 203 is specifically used to store the instructions 2031 and the data 2032, and the processor 204 can perform the steps and/or operations in the method embodiments of the present application by reading and executing the instructions 2031 stored in the memory 203. Data 2032 may be required during the operations and/or steps in the example.
  • the communication apparatus may further include an I/O interface 210, and the I/O interface 210 is used for receiving instructions and/or data from peripheral devices, and outputting instructions and/or data to peripheral devices.
  • I/O interface 210 is used for receiving instructions and/or data from peripheral devices, and outputting instructions and/or data to peripheral devices.
  • the uplink and downlink channels transmit signals on the same frequency domain resources and different time domain resources. Within a relatively short time (eg, the coherence time of channel propagation), it can be considered that the channel fading experienced by the signals on the uplink and downlink channels is the same. This is the reciprocity of the uplink and downlink channels.
  • the network device may measure the uplink channel according to an uplink reference signal, such as a sounding reference signal (sounding reference signal, SRS). And the downlink channel can be estimated according to the uplink channel, so that the precoding matrix and the like for downlink transmission can be determined.
  • an uplink reference signal such as a sounding reference signal (sounding reference signal, SRS).
  • SRS sounding reference signal
  • the uplink and downlink channels do not have reciprocity, and the uplink channel is used to determine the precoding for downlink transmission.
  • the matrix may not be able to adapt to the downlink channel.
  • the uplink and downlink channels in the FDD mode still have partial reciprocity, such as angle reciprocity and delay reciprocity. Therefore, angle and delay can also be called reciprocity parameters.
  • the uplink and downlink channels in the FDD mode with time delay can be considered to be the same, or reciprocal.
  • the angle may refer to the angle of arrival (AOA) at which the signal reaches the receiving antenna via the wireless channel, or may refer to the angle of departure (AOD) of the signal transmitted through the transmitting antenna.
  • AOA angle of arrival
  • AOD angle of departure
  • the angle may refer to the arrival angle of the uplink signal reaching the network device, or may refer to the departure angle of the network device transmitting the downlink signal. Due to the reciprocity of the transmission paths of the uplink and downlink channels on different frequencies, the arrival angle of the uplink reference signal and the departure angle of the downlink reference signal can be considered to be reciprocal.
  • each angle may be represented by an angle vector.
  • Each delay can be characterized by a delay vector. Therefore, in this embodiment of the present application, an angle vector may represent an angle, and a delay vector may represent a delay.
  • Reference signal reference signal
  • the reference signal may also be referred to as a pilot (pilot), a reference sequence, and the like.
  • the reference signal may be a reference signal used for channel measurement.
  • the reference signal may be a channel state information reference signal (channel state information reference signal, CSI-RS), a sounding reference signal (sounding reference signal, SRS), and the like.
  • CSI-RS channel state information reference signal
  • SRS sounding reference signal
  • the reference signal in this embodiment of the present application may be referred to as a downlink reference signal, and is a reference signal obtained by the network device precoding the reference signal based on the channel reciprocity parameter.
  • Precoding may specifically include beamforming and/or phase rotation.
  • the beamforming can be implemented by, for example, precoding the reference signal based on one or more angle vectors.
  • Phase rotation can be achieved, for example, by precoding the reference signal with one or more delay vectors.
  • Precoding the downlink reference signal based on one or more angle vectors may also be referred to as loading one or more angle vectors onto the downlink reference signal.
  • Precoding the downlink reference signal based on one or more delay vectors may also be referred to as loading one or more delay vectors onto the downlink reference signal.
  • FDD downlink channel reconstruction also known as CSI acquisition based on FDD partial reciprocity
  • the CSI-based downlink channel reconstruction method of the FDD system includes the following steps:
  • Step 1 the network device receives the SRS sent by the terminal equipment, and uses the uplink SRS to estimate the information (for example, direction angle, time delay, etc.) that the uplink and downlink have reciprocity;
  • Step 2 The network device sends the downlink reference signal to the terminal device, specifically, the network device loads the obtained uplink and downlink reciprocity information on the downlink reference signal, and notifies the terminal device to measure and feed back the supplementary information that the network device needs to obtain;
  • Step 3 The terminal device re-estimates and feeds back supplementary information by using the downlink reference signal (for example, it may be the full-band complex amplitude corresponding to each port);
  • Step 4 The network device reconstructs the downlink channel using the information obtained in the first and third steps.
  • Transmission port In this application, it may be referred to as an antenna port, a downlink reference signal transmission port, a reference signal transmission port, and may also be referred to as a port or a Tx port. It is used to transmit signals or data, and is a transmitting antenna recognized by the receiving end device, or a transmitting antenna that can be distinguished in space. Port is a logical meaning.
  • One antenna port may be configured for each virtual antenna, each virtual antenna may be a weighted combination of multiple physical antennas, and each antenna port may correspond to a reference signal port.
  • the antenna port is used to carry at least one of a specific physical channel and a physical signal.
  • the channels corresponding to the paths they travel through in space can be regarded as the same or related (such as large-scale channel characteristics, such as channel matrix H, the same). That is to say, for the signals sent on the same antenna port, the receiving end may consider that the channels are the same or related during demodulation.
  • Channel state information may include at least one of the following information: channel quality indicator (CQI), precoding matrix indicator (PMI), CSI-RS resource indicator (CSI-RS resource indicator), synchronization signal block (SSB) resource indicator (SS/PBCH block resource indicator, SSBRI), layer indicator (layer indicator, LI), rank indicator (rank indicator, RI), reference signal received power (reference signal received power, RSRP).
  • the RSRP may be Layer 1 RSRP (L1-RSRP).
  • the channel state information may further include synchronization measurement results or indication information of synchronization measurement results.
  • a Type II (Type II) codebook is defined in the NR system.
  • the Type II codebook in Rel-15 is based on the linear combination of orthogonal beams, and has high channel quantization accuracy, but the feedback overhead is large.
  • a low-overhead Type II codebook ie, an enhanced Type II codebook structure
  • Rel-16 a low-overhead Type II codebook (ie, an enhanced Type II codebook structure) is proposed, which is based on the method of linear combination of orthogonal beams and subband coefficient compression.
  • the Type II codebook defined in NR Rel-15 for a subband, the codebook is expressed as:
  • 2D DFT 2D discrete fourier transform
  • bit width used for quantization is 3 bits (bits), and the specific quantization table is: subband magnitude
  • bit width used for quantization is 1 bit, and the specific quantization table is
  • Cr ,l,i are quantized independently between beams, polarizations, and layers. Quantization is required for each subband.
  • the bit width used for quantization is 2 bits or 3 bits (the specific bit width is optional). Specifically, the corresponding quantification table is
  • NR Rel-16 defines a space-frequency-domain dual-domain compression codebook, which compresses the PMI of all subbands in the frequency domain.
  • the codebook structure is:
  • FIG. 3a is a schematic structural diagram of an R16 codebook
  • FIG. 3b is another structural schematic diagram of an R16 codebook.
  • N 1 and N 2 represent the number of antenna ports in the horizontal and vertical directions respectively
  • N 3 is the number of frequency domain subbands
  • the value of N 3 is equal to the number of frequency domain orthonormal bases.
  • FIG. 4 is a schematic diagram of combining coefficients of the R16 codebook.
  • W 2 is the quantized combination coefficient (also called superposition coefficient) matrix.
  • the unquantized combination coefficient is c l,m , taking the rank1 codebook as an example, the specific quantization rules are as follows:
  • the coefficient with the largest energy among the coefficients corresponding to the channel state information reference signal port (port) is called the strongest coefficient (strongest coefficient), that is, the "strongest coefficient” is for the first coefficient.
  • the strongest coefficient which refers to the port coefficients of all CSI-RS ports, is normalized to 1.
  • the quantization step size is -1.5 decibels (dB).
  • the two polarizations respectively perform 3-bit differential amplitude quantization on their respective strongest coefficients to obtain the quantization result p diff (V,m), where V is the index of the beam, and m is the frequency domain base.
  • p diff (V,m) is: the quantization coefficient corresponding to the mth frequency domain base of the Vth beam is p diff (V,m).
  • the quantification table is The quantization step size is -3dB.
  • the amplitude quantization value of the mth frequency domain base of the Vth beam p V,m pref (V,m) ⁇ p diff (V,m), where pref (V,m) is the Vth beam
  • the reference quantization amplitudes corresponding to the m frequency-domain bases.
  • phase quantization quantization with a 4-bit width is used.
  • bit width is used for quantization on one polarization, specifically, it refers to one polarization
  • Amplitude quantization uses a 3-bit width
  • phase quantization uses a 4-bit width
  • quantization is performed on the other polarization with a 4-bit width for the strongest coefficient. Therefore, the characteristics of different channels cannot be fully considered, and the feedback bit resources cannot be fully utilized.
  • the embodiment of the present application proposes an information feedback method, which utilizes the reciprocity of the channel to determine the quantization rule.
  • Different quantization rules may be adopted for different first coefficients to realize non-uniform quantization, and the first coefficients are coefficients corresponding to CSI-RS ports.
  • the accuracy of CSI feedback is improved.
  • FIG. 5 is a schematic diagram of an embodiment of a method for channel feedback information in an embodiment of the present application.
  • a channel feedback information method proposed in the embodiment of the present application includes:
  • the communication device sends an uplink reference signal to a network device.
  • the communication device sends an uplink reference signal to the network device
  • the uplink reference signal may be a sounding reference signal (SRS), a demodulation reference signal (DMRS), or a
  • SRS sounding reference signal
  • DMRS demodulation reference signal
  • the newly defined reference signal is not limited here.
  • the reference signal may also be called a pilot frequency, which is not distinguished in this embodiment of the present application.
  • step 501 is an optional step.
  • the network device determines one or more of one or more of a quantization rule, a grouping rule, and a feedback rule based on the uplink reference signal from the communication device.
  • the network device detects the energy of an uplink channel port (port) corresponding to the uplink reference signal based on the uplink reference signal from the communication device. Since the uplink and downlink channels are reciprocal, based on the energy of the uplink channel port, the channel state information-reference signal CSI-RS port energy (ie, energy amplitude) is estimated. The network device determines one or more of a quantization rule, a grouping rule, and a feedback rule for the first coefficient based on the energy of the CSI-RS port.
  • one or more of the quantification rule, grouping rule, and feedback rule include quantification rule sub-rules, grouping rules, and One or more of rule subrules and feedback rule subrules.
  • the first coefficient is also referred to as a superposition coefficient, or a combination coefficient, or a superposition coefficient corresponding to an angle-delay pair, etc., which is not limited here.
  • the above method is only for illustration, and the embodiments of the present application do not limit the method for the network device to determine one or more of the quantization rule, the grouping rule, and the feedback rule.
  • the network device may also determine one or more of the quantization rule, the grouping rule and the feedback rule by using other information of the uplink channel.
  • one or more of quantization rules, grouping rules, and feedback rules are pre-agreed in the protocol, and the communication device and the network device use one or more of the pre-agreed quantization rules, grouping rules, and feedback rules.
  • the quantization rules in the embodiments of the present application refer to the rules (or methods) for how to quantize the first coefficients;
  • the grouping rules refer to the rules (or methods) for how to group or classify the first coefficients );
  • the feedback rule refers to the rule (or method) of how to report the quantitative feedback information to the network device.
  • One or more of the quantification rules, grouping rules, and feedback rules in the embodiments of the present application are only a general description of the above rules (or methods).
  • the network device may determine one or more of quantization rules, grouping rules and feedback rules based on the uplink reference signal from the communication device, and the method further includes:
  • the network device sends indication information to the communication device.
  • the network device determines one or more of the quantification rule, the grouping rule, and the feedback rule.
  • the network device sends indication information (indicator) to the communication device, where the indication information is used to instruct the communication device to use one or more of the corresponding quantization rule, grouping rule and feedback rule.
  • the network device can send the indication information to the communication device in various ways, which are described below:
  • the indication information includes one or more of a quantification rule, a grouping rule, and a feedback rule.
  • the indication information sent by the network device to the communication device includes: quantification rule A, grouping rule A, and feedback rule A.
  • the communication apparatus performs grouping processing on the global first coefficients based on the grouping rule A in the instruction information.
  • the communication device performs quantization processing on the first coefficients in each group based on the quantization rule A in the indication information to obtain quantization indication information.
  • the communication device processes the quantization instruction information based on the feedback rule A in the instruction information, and obtains the quantized feedback information.
  • the indication information includes one or more of an index of a quantization rule, an index of a grouping rule, and an index of a feedback rule.
  • the indication information may be indication information with a value of 0 or 1, for example, when the value is 1110, it corresponds to the grouping rule A, and when the value is 1111, it corresponds to the grouping rule B.
  • the indication information may also be in the form of a string "quantization A", or “quantization B”, etc. to indicate one or more of the corresponding quantization rules, grouping rules and feedback rules through specific meanings.
  • One or more of quantification rules, grouping rules and feedback rules are preconfigured in the communication device.
  • the pre-configuration may be a protocol agreement, or may be configured by the network device when the communication device accesses the network device for the first time, which is not limited here.
  • the communication device determines one or more of the quantification rule, grouping rule and feedback rule to be used according to the index included in the indication information. For example: when the index included in the indication information is "grouping A", the communication device determines that the grouping rule to be used is "grouping rule A”.
  • the quantification rules and feedback rules to be used by the communication device are the "quantization rules A" and “feedback rules A" corresponding to the "grouping rules A".
  • Another example For example: when the indexes included in the indication information are "grouping A”, “quantization B” and “feedback A”, the communication device determines that the grouping rule to be used is “grouping rule A”, and the quantization rule to be used is For “quantification rule B”, the feedback rule to be used is "feedback rule A”.
  • the quantization rules in step 503 refer to Z quantization rules used when performing quantization processing on multiple groups, wherein Z is an integer greater than or equal to 1.
  • “quantization rule A” includes: “quantization rule a” for quantizing the first coefficient in “group A”, “quantization rule b” for quantizing the first coefficient in “group B”, and “quantization rule b” for quantizing the first coefficient in “group B”
  • the feedback rules in step 503 refer to one or more feedback rules used when processing the quantization indication information corresponding to multiple groups.
  • feedback rule A includes: “feedback rule a” for processing the quantization indication information corresponding to "group A”, “feedback rule b” for processing the quantization indication information corresponding to "group B”, and “feedback rule b” for processing the quantization indication information corresponding to "group B”
  • the network device may send the indication information to the communication device through the following signaling or messages, including but not limited to: scheduling downlink control information (downlink control information, DCI), radio resource control (radio resource control, RRC) information. command, or media access control sublayer control element signaling (media access control control element, MAC CE).
  • DCI downlink control information
  • RRC radio resource control
  • MAC CE media access control sublayer control element signaling
  • steps 501-503 are optional steps.
  • steps 501-503 are not executed.
  • the grouping rule A is to divide the 32 first coefficients into two groups, wherein the first grouping includes coefficients corresponding to CSI-RS ports 1-16, and the second grouping includes coefficients corresponding to CSI-RS ports 17-32. coefficient of .
  • the quantization rule A includes using a 2-bit width for the amplitude quantization of the first group and a 4-bit width for the phase quantization; and using a 3-bit width for the amplitude quantization of the second group and a 4-bit width for the phase quantization.
  • the feedback rule A includes not feeding back the quantization indication information of the strongest coefficient, normalizing the strongest coefficient, feeding back the position information (index) of the strongest coefficient, and feeding back the quantization feedback corresponding to the remaining first coefficients except the strongest coefficient at the feedback place. information.
  • the network device is negotiated by the communication device with the network device or configured to use one or more of quantification rules, grouping rules, and feedback rules. For example, when the communication device accesses the network device for the first time, it is determined through negotiation with the network device or one or more rules are configured by the network device. Specifically, the network device can notify the communication device in step 503. If one or more of quantification rules, grouping rules, and feedback rules need to be used, steps 501-502 are not executed.
  • step 501 is performed, step 504 is performed, and steps 502-503 are not performed.
  • the communication apparatus performs quantization processing on the first coefficients in the G groups based on the Z quantization rules to obtain quantization indication information.
  • the communication apparatus first determines G groups based on the grouping rule, where G is an integer greater than 1, each group includes one or more first coefficients, and each CSI-RS port corresponds to one or more coefficients. is the first coefficient.
  • the G first coefficients grouped as global are obtained by grouping based on a grouping rule.
  • the global first coefficient may be the first coefficient of all layers, or may be the first coefficient of a certain layer or multiple layers.
  • the first coefficient of the certain layer is divided into G groups.
  • the global first coefficient may also be the first coefficient of all layers, and the first coefficients of all layers are divided into G groups.
  • the first coefficients of each of the all layers are divided into G groups, which are not limited here.
  • W 1 is a freely chosen matrix, and a special configuration of W 1 is an identity matrix.
  • W 1 is also called a port selection matrix so that K 1 ports are freely selected from among P CSI-RS ports, or K 1/2 ports are freely selected from P/2 CSI-RS ports.
  • P is a positive integer
  • P/2 is a positive integer
  • K 1 is a positive integer
  • P is the number of CSI-RS ports used for port selection.
  • W 2 is a superposition coefficient corresponding to the P CSI-RS ports, and the superposition coefficient is a quantized value obtained by performing quantization processing on the non-zero coefficients of the P CSI-RS ports according to a quantization rule.
  • R is defined as the number of precoding matrix (Precoding Matrix Indicator, PMI) subbands included in each CQI subband.
  • Network devices can be disabled When disabled, is an all-one vector.
  • the codebook to which the quantization rule applies is:
  • Free selection matrix for CSI-RS ports also called port selection matrix
  • K 1 ports from P CSI-RS ports
  • K 1/2 from P/2 CSI-RS ports port
  • W 1 a special configuration of W 1 as an identity matrix.
  • P is a positive integer
  • P/2 is a positive integer
  • K 1 is a positive integer
  • P is the number of CSI-RS ports used for port selection, for example, it can take values such as 4, 8, 16, and 32.
  • the superposition coefficient is the superposition coefficient corresponding to the CSI-RS port, and the superposition coefficient is a quantized value obtained by performing quantization processing on the non-zero coefficients of the P CSI-RS ports according to the quantization rule.
  • Network devices can be disabled disabled hour, is an all-one vector.
  • R is defined as the number of precoding matrix indicator (Precoding Matrix Indicator, PMI) subbands included in each CQI subband (ie: numberOfPMI-SubbandsPerCQI-Subband).
  • PMI Precoding Matrix Indicator
  • R resource block (Resource Block, RB) or resource element (Resource Element, RE) is not limited here.
  • a possible value of R is that R is satisfying a positive integer, where The number of physical resource blocks (PRBs) contained in each subband. Another possible value, R is satisfying A positive integer of , where N RE is the number of REs contained in a PRB.
  • the value of R may be a subset of the set ⁇ 1, 2, 4, 8 ⁇ .
  • the value of R may be a subset of the set ⁇ 1, 2, 4, 8, 16 ⁇ .
  • R In addition to the definition of numberOfPMI-SubbandsPerCQI-Subband, R also limits the frequency domain granularity of CSI-RS precoding on the network side, that is, the frequency domain granularity of CSI-RS precoding on the network side is At this time, the network side is in continuous The same CSI-RS precoding is used on the RBs, where The number of PRBs contained for each subband, and obviously R is a positive integer.
  • the terminal side performs measurements such as RI, PMI, and CQI, it is assumed that the network side is in continuous The same CSI-RS precoding is used on all RBs.
  • limit R 0 is the minimum supportable CSI-RS precoding frequency domain granularity constrained by the protocol.
  • R 0 2, and the value of R must satisfy when The value of R can be 1 or 2; when The value of R can be 1, 2, or 4.
  • each CSI-RS resource is used to measure partial superposition coefficients, at this time, the terminal needs to combine multiple CSI-RS resources for rank indication ( measurement of rank indication (RI), precoding matrix indicator (PMI), and/or channel quality indication (CQI).
  • rank indication measurement of rank indication (RI), precoding matrix indicator (PMI), and/or channel quality indication (CQI).
  • RI rank indication
  • PMI precoding matrix indicator
  • CQI channel quality indication
  • R and O1 jointly determine the frequency domain granularity of CSI-RS precoding , that is, the network-side CSI-RS precoding frequency domain granularity is At this time, the network side is in continuous
  • the network side may configure one or more CSI-RS resources, wherein one CSI-RS resource includes one or more CSI-RS patterns (CSI-RS patterns), and CSI-RSs of different patterns are used for Measure the partial superposition factor.
  • the terminal needs to combine one or more CSI-RS resources to measure RI, PMI, and CQI, where one CSI-RS resource includes one or more CSI-RSs with different patterns.
  • the terminal combines some or all of the CSI-RS resources. CSI-RS.
  • the CSI-RS corresponding to O2 CSI-RS patterns need to be jointly measured, and the value of R needs to be calculated in consideration of the values of R 0 and O2, and at this time, R and O2 jointly determine the CSI-RS prediction.
  • the frequency-domain granularity of coding that is, the network-side CSI-RS precoding frequency-domain granularity is At this time, the network side is in continuous
  • the same CSI-RS precoding is used on all RBs.
  • the O2 CSI-RS patterns refer to the number of CSI-RS patterns that need to be jointly measured in all CSI-RS resources configured on the network side.
  • the protocol may constrain the number of jointly measured CSI-RS resources, and/or the number of jointly measured CSI-RS patterns.
  • one or more comb index (or frequency domain component, or delay component) may be configured on the network side, and different comb index (or frequency domain component, or delay component) are used to measure CSI-RS A certain coefficient corresponding to the port.
  • the terminal needs to perform measurement jointly with all the comb index (or frequency domain component, or time delay component) in the CSI-RS port.
  • O3 comb mode (or frequency domain component, or time delay component) needs to be combined for joint measurement.
  • the value of R needs to be calculated in consideration of the values of R 0 and O3, and at this time, R and O3 are jointly determined.
  • the frequency domain granularity of CSI-RS precoding that is, the frequency domain granularity of CSI-RS precoding on the network side is At this time, the network side is in continuous The same CSI-RS precoding is used on all RBs.
  • the protocol can first determine the value of R, and then The selectable value of O is then calculated according to the values of R 0 and R, and R and O jointly determine the frequency domain granularity of CSI-RS precoding, that is, the frequency domain granularity of CSI-RS precoding on the network side is At this time, the network side is in continuous The same CSI-RS precoding is used on all RBs.
  • W 1 is a freely chosen matrix, and a special configuration of W 1 is an identity matrix.
  • W 1 is also called a port selection matrix so that K 1 ports are freely selected from among P CSI-RS ports, or K 1/2 ports are freely selected from P/2 CSI-RS ports.
  • P is a positive integer
  • P/2 is a positive integer
  • K 1 is a positive integer
  • P is the number of CSI-RS ports used for port selection.
  • W 2 is a superposition coefficient corresponding to the P CSI-RS ports, and the superposition coefficient is a quantized value obtained by performing quantization processing on the non-zero coefficients of the P CSI-RS ports according to a quantization rule.
  • CSI-RS configuration the following options (or combinations) are currently identified to support lower CSI-RS overhead and/or consider the impact on universal personal telecommunication (UPT) performance under actual CSI-RS measurements CSI-RS processing complexity:
  • Option 0 One CSI-RS port corresponds to one coefficient.
  • Option 1 Support configuring a lower CSI-RS density for each CSI-RS resource, eg 0.25.
  • Option 2 Support configuration of one or more CSI-RS patterns per CSI-RS resource associated with the Rel-17PS codebook.
  • Option 3 Support for configuring multiple CSI-RS resources per CSI report configuration associated with the Rel-17PS codebook.
  • the grouping rules are described in detail below, and the grouping rules include one or more of the following:
  • the G groups are divided based on the indexes of the CSI-RS ports, and the indexes of the CSI-RS ports in different groups are inconsistent.
  • FIG. 6 is a schematic diagram of a grouping in an embodiment of the present application.
  • group 1 includes CSI-RS ports 1-4, wherein the coefficients corresponding to CSI-RS port 1 are coefficients 1-5;
  • group 2 includes CSI-RS ports 5-8.
  • the number of first coefficients corresponding to different CSI-RS ports may be consistent or inconsistent.
  • the coefficients corresponding to port 1 are coefficients 1-5, totaling 5 coefficients; the coefficient corresponding to port 2 may be coefficient 6 -10, a total of 5 coefficients.
  • the coefficients corresponding to port 2 may also be coefficients 6-8, 3 coefficients in total. There is no limitation here.
  • the G groups are divided based on patterns corresponding to the CSI-RS ports, and the patterns corresponding to the CSI-RS ports in different groups are inconsistent.
  • the pattern refers to the pilot pattern of the CSI-RS, including the starting position and density.
  • FIG. 7 is another schematic diagram of grouping in an embodiment of the present application.
  • group 1 includes patterns 1-4, wherein pattern 1 includes CSI-RS ports 1-4.
  • the number of coefficients corresponding to each CSI-RS port is greater than or equal to 1.
  • the number of first coefficients corresponding to different CSI-RS ports may be consistent or inconsistent.
  • the numbers of CSI-RS ports corresponding to different patterns may be consistent or inconsistent.
  • the number of patterns corresponding to different groups may be consistent or inconsistent, which is not limited here.
  • G groups are divided based on CSI-RS resources (resources), wherein one CSI-RS resource corresponds to multiple CSI-RS ports, different CSI-RS resources include the same or different number of ports, and in different groups
  • the CSI-RS resources corresponding to the CSI-RS ports are inconsistent.
  • group 1 includes resource 1, where resource 1 includes CSI-RS ports 1-4; group 2 includes resource 2, where resource 2 includes CSI-RS ports 5-8.
  • group 1 includes resource 1 and resource 2
  • group 2 includes resource 3 and resource 4, wherein resource 1 includes CSI-RS ports 1-4, and resource 2 includes CSI-RS ports 5-8, resource 3 includes CSI-RS ports 9-12, and resource 4 includes CSI-RS ports 13-16.
  • the number of coefficients corresponding to each CSI-RS port is greater than or equal to 1.
  • the number of first coefficients corresponding to different CSI-RS ports may be consistent or inconsistent.
  • the number of CSI-RS ports corresponding to different resources may be consistent or inconsistent.
  • the number of resources corresponding to different groups may be consistent or inconsistent, which is not limited here.
  • the indices of CSI-RS ports in different resources may be different or the same, for example, resource 1 includes CSI-RS ports 1-4, resource 2 includes CSI-RS ports 1-4, and different resources include CSI-RS ports 1-4.
  • the RBs or REs occupied by the CSI-RS ports are inconsistent.
  • G groups are divided based on the index of the CSI-RS port, and/or the comb index, wherein the comb index is used to identify one or more first coefficients in each CSI-RS port, different The indices and/or comb index of the CSI-RS ports in the packet are inconsistent.
  • the comb index 1 is used to identify the even-numbered resource block (RB) in each CSI-RS port to calculate the first coefficient, such as coefficient 1 ;
  • the comb index 2 is used to identify the odd-numbered resource blocks in each CSI-RS port to calculate the first coefficient, for example, coefficient 2.
  • the CSI-RS port 1 includes coefficient 1-coefficient 2.
  • the comb index 1 is used to identify the even-numbered resource blocks in each CSI-RS port to calculate the first coefficient, that is, the coefficient 1 corresponding to the CSI-RS port 1, and the resource block corresponding to the coefficient 1 includes: resource block 2 , resource block 4, resource block 6 and resource block 8, etc.;
  • Comb index 2 is used to identify the odd-numbered resource blocks in each CSI-RS port to calculate the first coefficient, that is, the coefficient 2 corresponding to CSI-RS port 1,
  • the resource blocks corresponding to the coefficient 2 include: resource block 1, resource block 3, resource block 5, resource block 7, resource block 9, and the like.
  • the G groups are divided based on the index of the CSI-RS port and/or the index of the delay component, wherein the index of the delay component is used to identify the delay position where the first coefficient is located in each CSI-RS port , the indices of the CSI-RS ports and/or the indices of the delay components in different groups are inconsistent.
  • FIG. 9 is another schematic diagram of grouping in this embodiment of the present application.
  • the corresponding delay component in group 2 is delay component 2.
  • the CSI-RS port 1 includes coefficient 1-coefficient 2, wherein the delay component 1 is used to identify each first coefficient 1; delay component 2 is used to identify each first coefficient 2.
  • the G groups are divided based on the index of the CSI-RS port, and/or the frequency domain component index, wherein the frequency domain component index is used to identify the frequency domain base corresponding to the first coefficient in each CSI-RS port , the indices of the CSI-RS ports and/or the frequency domain component indices in different groups are inconsistent.
  • Scheme (F) is similar to scheme (E) and will not be repeated here.
  • the communication device After determining the G groups and the first coefficients in the G groups according to the above grouping rules, the communication device performs quantization processing on the first coefficients in the G groups based on the Z quantization rules to obtain quantization indication information.
  • the quantization processing includes: amplitude quantization (Amplitude quantization) processing, phase quantization (Phase Quantization) processing, and/or joint amplitude and phase quantization processing.
  • the communication device may use the same or different quantization rules to quantize the first coefficient; for CSI-RS ports of different layers, the network device may configure the same or different quantization rules rule. For example, when CSI-RS ports of different polarizations have strong correlation, the same quantization rules are configured for these CSI-RS ports. For CSI-RS ports between different polarizations, when the correlation is weak, independent quantization rules are configured for these CSI-RS ports. When CSI-RS ports in different layers have strong correlation, the same quantization rules are configured for these CSI-RS ports. For CSI-RS ports between different layers, when the correlation is weak, independent quantization rules are configured for these CSI-RS ports.
  • the amplitude quantization value obtained after the amplitude quantization of the strongest coefficient in the gth group of the lth layer is
  • mapping rule is the magnitude quantization indication of the strongest coefficient in the g-th packet of the l-th layer, reason
  • the determined amplitude quantization value, f 1,l,g represents the gth packet of the lth layer and The mapping rule between them; the mapping rule can be determined by an amplitude quantization table or function, which is not limited here.
  • the bit width used for amplitude quantization processing of the strongest coefficient in the gth packet of the lth layer is:
  • B g,l is the number of finite values of the strongest coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 B g,l .
  • mapping rules that is, the amplitude quantization table
  • the amplitude quantization value obtained by the amplitude quantization of the i-th first coefficient of the g-th packet of the l-th layer is
  • mapping rule can be determined by an amplitude quantization table or function, which is not limited here.
  • the bit width used for the amplitude quantization processing of the first coefficient in the gth packet of the lth layer is: Q g,l is the number of finite values of the first coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 Q g,l .
  • mapping rules that is, the amplitude quantization table
  • mapping rules that is, the amplitude quantization table
  • the quantification rule includes:
  • phase quantization value obtained after the ith first coefficient of the ith grouping of the 1st layer carries out the phase quantization process is ⁇ l,i,g ;
  • phase quantization process may adopt uniform quantization or non-uniform quantization.
  • the quantization phase corresponding to c l,i,g may be determined by looking up a table, or the corresponding quantized phase may be generated through a corresponding mapping relationship.
  • the bit width used for phase quantization processing of the first coefficient in the gth packet of the lth layer is: M g,l is the number of finite values of the first coefficient in the gth group of the lth layer after phase quantization processing, is the rounded-up value of log 2 M g,l .
  • the quantization result of the i-th first coefficient of the g-th packet of the l-th layer can be expressed as: w l,i,g ;
  • Quantized coefficients That is, the magnitude of the strongest coefficient in each group is quantized as and used as the reference amplitude of each group, and then each group of coefficients uses the corresponding reference amplitude Amplitude differential quantization is performed, and the quantized value is
  • the bit width of the phase quantization process is 4 bits, and it is uniform quantization as an example,
  • the quantification rule A and the quantification rule B are taken as examples for description, and the quantification rule A and the quantification rule B are inconsistent quantification rules. See Table 5:
  • the amplitude-phase joint quantization value obtained after the amplitude-phase joint quantization process of the strongest coefficient in the gth group of the lth layer is
  • mapping rule between; the mapping rule can be determined by the amplitude-phase joint quantization table or function, which is not limited here.
  • the magnitude-phase joint quantization value obtained by the amplitude-phase joint quantization of the i-th first coefficient of the g-th packet of the l-th layer is:
  • mapping rule may be determined by an amplitude-phase joint quantization table or function, which is not limited here.
  • the obtained quantization indication information includes one or more of the following:
  • (a), i 2,1,l , i 2,1,l is the magnitude quantization indication of the strongest coefficient of each grouping in the lth layer, where, is the amplitude quantization indication of the strongest coefficient in the gth packet of the lth layer;
  • i 2,2,l , i 2,2,l is the amplitude quantization indication of the first coefficient of each group in the lth layer, wherein, is the amplitude quantization indication of the first coefficient in the gth packet of the lth layer; is the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer; i ⁇ 0,...,Ng ,l -1 ⁇ ;
  • l is the index of the layer
  • N g is the number of first coefficients in the gth group of the lth layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • Bg is the lth layer of the first coefficient.
  • Q g is the number of finite values that the first coefficient in the gth group of the lth layer has undergone amplitude quantization processing
  • l is greater than or equal to 1.
  • N g is an integer greater than or equal to 1
  • g is an integer greater than or equal to 0
  • g is less than or equal to G-1
  • i is an integer greater than or equal to 1
  • B g is an integer greater than or equal to 1
  • Q g is an integer greater than or equal to 1.
  • c l,Ng,l-1,g c l,i,g is the phase quantization indication of the i-th first coefficient of the g-th packet of the l-th layer, i ⁇ 0,...,N g,l -1 ⁇ , c l,i,g ⁇ 0,...,M g,l -1 ⁇ , M g,l is the number of finite values after phase quantization of the first coefficient in the gth group of the lth layer
  • N g,l is the number of first coefficients in the gth group of the lth layer
  • g is an integer greater than or equal to 0
  • g is less than or equal to G-1
  • l is an integer greater than or equal to 1
  • c l, i, g can also take values starting from 1, and there is no restriction here.
  • ⁇ is the maximum number of layers, ⁇ is an integer greater than or equal to 1, P l is the total number of first coefficients in the lth layer, P l is an integer greater than or equal to 1, and l is an integer greater than or equal to 1.
  • i 1,2,1 is a bitmap (bitmap) used to indicate whether the first coefficient included in the lth layer is non-zero;
  • N g,l is the index of the layer
  • N g,l is the number of first coefficients in the gth group of the lth layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is greater than or equal to 1 Integer
  • N g, l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0.
  • i 3,1,l is the magnitude-phase joint quantization indication of the strongest coefficient of each grouping in the lth layer, where, is the amplitude-phase joint quantization indication of the strongest coefficient in the gth packet of the lth layer; i ⁇ 0,...,Ng ,l -1 ⁇ ;
  • i 3,2,l , i 3,2,l are the amplitude-phase joint quantization indications of the first coefficients of the respective groups in the lth layer, wherein, is the joint quantization indication of the amplitude and phase of the first coefficient in the gth packet of the lth layer; is the joint quantization indication of the amplitude and phase of the first coefficient in the gth packet of the lth layer;
  • N g,l is the index of the layer
  • N g,l is the number of the first coefficients in the gth group of the lth layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • a g,l is The number of finite values of the strongest coefficients in the g-th group after the amplitude and phase joint quantization processing is performed
  • L g,l is the number of finite values of the first coefficient in the g-th group after the amplitude and phase joint quantization processing
  • l is greater than or equal to 0
  • N g is an integer greater than or equal to 1
  • g is an integer greater than or equal to
  • g is less than or equal to G-1
  • i is an integer greater than or equal to
  • L g,l is an integer greater than or equal to 1.
  • the communication apparatus determines quantization feedback information based on the quantization indication information and the feedback rule.
  • the communication apparatus determines the quantization feedback information based on the quantization indication information and the feedback rule.
  • the feedback rules include one or more of the following:
  • AA do not feed back the quantization indication information of the strongest coefficient, perform normalization processing on the strongest coefficient, and feed back the position information (eg, index) of the strongest coefficient.
  • position information eg, index
  • the communication device does not transmit to the network device and in, is the index of the group where the strongest coefficient of the lth layer is located, and the index of the strongest coefficient of the lth layer in the group g * is
  • the communication device sends i 1,1 to the network device.
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and Quantization indication information of the corresponding first coefficient
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and quantization indication information c l,i,g of the corresponding first coefficient;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients Among them, the remaining first coefficients are the first coefficients that do not meet the rules 1)-3) and are not the strongest coefficients, and the amplitude quantization values of the remaining first coefficients satisfy and
  • the communication device does not send the remaining phase quantization indications c l,i,g of the first coefficients that do not meet the rules 1)-3), wherein the remaining first coefficients are those that do not meet the rules 1)-3).
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of non-zero coefficients to be fed back corresponding to the CSI-RS ports in all ⁇ layers is: K NZ ;
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and K NZ - ⁇ quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and K NZ - ⁇ pieces of quantization indication information c l,i,g corresponding to the first coefficients of ;
  • the communication device does not send the amplitude quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 1)-3) and are not the strongest coefficients, and the amplitude quantization values of the remaining PK NZ first coefficients satisfy and
  • K NZ is less than or equal to C*K 0 , where K 0 is the agreement between the communication device and the network device or A value predefined by the protocol to control the number of feedback coefficients, C is an integer greater than or equal to 1.
  • BB the quantization indication information of the strongest coefficient is fed back, and the position information (index) of the strongest coefficient is not fed back.
  • BB the quantization indication information of the strongest coefficient is fed back, and the position information (index) of the strongest coefficient is not fed back.
  • the communication device does not send i 1,1 to the network device.
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the quantization indication information c l,i,g corresponding to the first coefficient of ;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients
  • the remaining first coefficients are the first coefficients that do not satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining first coefficients satisfy the
  • the communication device does not send the phase quantization indication c l,i,g of the remaining first coefficients, wherein the remaining first coefficients are the first coefficients that do not satisfy rules 6), 7) and 8), and the remaining first coefficients
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of non-zero coefficients to be fed back corresponding to the CSI-RS ports in all ⁇ layers is: K NZ ;
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the K NZ pieces of quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the K NZ pieces of quantization indication information c l,i,g corresponding to the first coefficient of ;
  • the communication device does not send the amplitude quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining PK NZ first coefficients satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining PK NZ first coefficients satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining PK NZ first coefficients satisfy the
  • K NZ is less than or equal to C*K 0 , where K 0 is the agreement between the communication device and the network device Or a value predefined by the protocol to control the number of feedback coefficients, C is an integer greater than or equal to 1.
  • the quantization indication information of the strongest coefficient is not fed back, the normalization process is performed on the strongest coefficient, and the position information (index) of the strongest coefficient is fed back.
  • the position information (index) of the strongest coefficient is fed back.
  • the communication device does not transmit to the network device and in, is the index of the group where the strongest coefficient of the lth layer is located, and the index of the strongest coefficient of the lth layer in the group g * is
  • the communication device sends i 1,1 to the network device.
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and The quantization indication information corresponding to the first coefficient of
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients Among them, the remaining first coefficients are the first coefficients that do not meet the rules 11)-12) and are not the strongest coefficients, and the amplitude and phase joint quantization values of the remaining first coefficients satisfy the and
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of non-zero coefficients to be fed back corresponding to the CSI-RS ports in all ⁇ layers is: K NZ ;
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and K NZ - ⁇ quantization indication information corresponding to the first coefficient of
  • the communication device does not send the amplitude quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 11)-12) and are not the strongest coefficients, and the amplitude and phase joint quantization values of the remaining PK NZ first coefficients satisfy the and
  • K NZ is less than or equal to C*K 0 , where K 0 is the agreement between the communication device and the network device Or a value predefined by the protocol to control the number of feedback coefficients, C is an integer greater than or equal to 1.
  • the communication device does not send i 1,1 to the network device.
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device does not send the remaining first coefficient amplitude-phase joint quantization indication
  • the remaining first coefficients are the first coefficients that do not satisfy rules 14) and 15)
  • the amplitude-phase joint quantization values of the remaining first coefficients satisfy the
  • P l is the total number of first coefficients in the lth layer, and P l is a positive integer;
  • the total number of non-zero coefficients to be fed back corresponding to the CSI-RS ports in all ⁇ layers is: K NZ ;
  • the total number of first coefficients corresponding to the CSI-RS ports in the ⁇ layer is P, where,
  • the communication device sends the quantization indication information of the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the K NZ pieces of quantization indication information corresponding to the first coefficient of
  • the communication device does not send the amplitude-phase joint quantization indication of the remaining PK NZ first coefficients Among them, the remaining PK NZ first coefficients are the first coefficients that do not satisfy the rules 14) and 15), and the amplitude and phase joint quantization values of the remaining PK NZ first coefficients satisfy the
  • K NZ is less than or equal to C*K 0 , where K 0 is the agreement between the communication device and the network device Or a value predefined by the protocol to control the number of feedback coefficients, C is an integer greater than or equal to 1.
  • the communication apparatus sends the quantization feedback information to the network apparatus.
  • the communication device sends the quantization feedback information determined in step 505 to the network device.
  • the network device constructs a downlink channel based on the quantized feedback information.
  • the uplink channel information is used to determine the quantization rule used in the feedback of the downlink communication device. Different quantization rules may be used for different first coefficients to achieve non-uniform quantization. On the premise of less feedback overhead, the accuracy of CSI feedback is improved.
  • FIG. 10 is a schematic diagram of a simulation experiment result in an embodiment of the present application.
  • Figure 10 shows the normalized amplitude distribution of superposition coefficients of 16 CSI-RS ports under single polarization.
  • the CSI-RS precoding weight is calculated according to the uplink channel, and the precoding weight is denoted as U.
  • the superposition coefficient of the uplink instantaneous channel is calculated.
  • the superposition coefficient of the downlink instantaneous channel is calculated.
  • the network device uses the projection of the uplink statistical covariance matrix on U to calculate the superposition coefficient of the uplink statistical covariance matrix. It can be seen from FIG. 10 that CSI-RS port numbers (indexes) 1-8 have larger energy and larger dynamic ranges; CSI-RS port numbers (indexes) 9-16 have smaller energy and smaller dynamic ranges. Based on the technical solutions proposed in the embodiments of this application, the network device divides CSI-RS port numbers 1-8 into one group (1-8), and CSI-RS port numbers 9-16 into another group (9-16). The quantization rule corresponding to grouping (1-8) and the quantization rule corresponding to grouping (9-16) use different quantization precisions.
  • the quantization rule corresponding to grouping (1-8) uses a larger bit width, and 9-16)
  • the corresponding quantization rule adopts a smaller bit width.
  • the quantization process is performed based on the different quantization rules, and the performance of the quantization process result can be characterized by a normalized Mahalanobis distance.
  • FIG. 11 is a schematic diagram of another simulation experiment result in an embodiment of the present application.
  • the normalized Mahalanobis distance of the quantization processing result obtained by using the technical solution of the embodiment of the present application is significantly larger than that of the prior art solution (the four broken lines on the left side in FIG. 11 ), and the technical solution reflecting the embodiment of the present application is decreasing. Under the premise of small feedback overhead, non-uniform quantization is used to obtain better performance.
  • One CSI-RS port corresponds to one first coefficient.
  • 32 CSI-RS ports are divided into 2 groups, and the first 75% of the ports with the largest coefficient energy are grouped into a group. It is exemplarily assumed that the coefficient energy on the CSI-RS ports is arranged from large to small, then the ports [1-24] is a group (the first group), and ports [25-32] are a group (the second group).
  • the UE side normalizes the strongest coefficient among the coefficients corresponding to the 32 CSI-RS ports, and assumes that the strongest coefficient is located in the first group, that is, the reference amplitude of the first group is 1.
  • the strongest coefficients in the second group are amplitude quantized using 4 bits as the reference quantized amplitude value of the second group.
  • the two groups are respectively subjected to amplitude differential quantization relative to their respective reference amplitudes.
  • the bit width of the differential amplitude quantization of the first group is 3 bits
  • the bit width of the differential amplitude quantization of the second group is 2 bits.
  • the phase of each coefficient is uniformly quantized using 4 bits.
  • the communication device and the network device include corresponding hardware structures and/or software modules for executing each function.
  • the present application can be implemented in hardware or in the form of a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • the communication device and the network device can be divided into functional modules according to the above method examples.
  • each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.
  • FIG. 12 is a schematic diagram of an embodiment of the communication device in the embodiment of the present application.
  • the communication apparatus can be deployed in a terminal device or a chip system, and the communication apparatus 1200 includes:
  • the processing module 1201 is configured to perform quantization processing on the first coefficients in the G groups based on the Z quantization rules to obtain quantization indication information, where the first coefficients are channel state information-reference signals (channel state information-reference signal, CSI-RS). ) port (port) corresponding coefficient, wherein, the Z quantization rules are the quantization rules corresponding to the CSI-RS ports in the G groupings, G is an integer greater than 1, and Z is a positive integer less than or equal to G; each grouping includes one or more first coefficients, each CSI-RS port corresponds to one or more first coefficients;
  • Each group is quantized using a quantization rule to obtain quantization indication information
  • the processing module 1201 is further configured to determine quantization feedback information based on the quantization indication information and the feedback rule.
  • the G first coefficients grouped globally are obtained by grouping based on a grouping rule.
  • the transceiver module 1202 is configured to send the quantization feedback information to the network device.
  • the transceiver module 1202 is further configured to receive indication information from the network device, where the indication information is used to indicate one or more of quantification rules, feedback rules and grouping rules used by the communication device.
  • the grouping rules include:
  • the G groups are divided based on the indexes of the CSI-RS ports, and the indexes of the CSI-RS ports in different groups are inconsistent;
  • the G groups are divided based on the patterns corresponding to the CSI-RS ports, and the patterns corresponding to the CSI-RS ports in different groups are inconsistent;
  • the G groups are divided based on CSI-RS resources, wherein one CSI-RS resource corresponds to multiple CSI-RS ports, different CSI-RS resources include the same or different numbers of ports, and the CSI corresponding to the CSI-RS ports in different groups -RS resources are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the comb index, wherein the comb index is used to identify one or more first coefficients in each CSI-RS port, and the CSI-RS in different groups
  • the port index and/or comb index are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the index of the delay component, wherein the index of the delay component is used to identify the delay position of the first coefficient in each CSI-RS port.
  • the indices and/or delay component indices of the CSI-RS ports in the CSI-RS port are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the frequency domain component index, wherein the frequency domain component index is used to identify the frequency domain base corresponding to the first coefficient in each CSI-RS port.
  • the indices of the CSI-RS ports and/or the frequency domain component indices are inconsistent.
  • the quantization processing includes: amplitude quantization processing, phase quantization processing, and/or amplitude-phase joint quantization processing.
  • i 2,1,l is the magnitude quantization indication of the strongest coefficient of each grouping in the lth layer, where, is the amplitude quantization indication of the strongest coefficient in the gth packet of the lth layer;
  • i 2,2,l , i 2,2,l is the magnitude quantization indication of the first coefficient of each group in the lth layer, where, is the amplitude quantization indication of the first coefficient in the gth packet of the lth layer; is the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer; i ⁇ 0,...,Ng ,l -1 ⁇ ;
  • l is the index of the layer
  • N g,l is the number of first coefficients in the gth group
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • B g,l is the gth
  • N g,l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 0
  • g is less than or equal to G-1
  • i is an integer greater than or equal to
  • B g,l is an integer greater than or equal to 1
  • Q g, l are integers greater than or equal to 1.
  • the quantization indication information includes:
  • c l,g [c l,0,g ... c l,i,g ...c l,Ng-1,g ], c l,i,g is the i-th first coefficient of the g-th grouping of the l-th layer
  • the phase quantization indication of , i ⁇ 0,...,N g,l -1 ⁇ , c l,i,g ⁇ 0,...,M g,l -1 ⁇ , M g,l is the lth layer g
  • N g,l is the number of first coefficients in the gth group of the lth layer
  • g is an integer greater than or equal to 0 and g is less than or equal to G -1
  • l is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0.
  • the quantization indication information includes:
  • ⁇ is the maximum number of layers, ⁇ is an integer greater than or equal to 1, P l is the total number of first coefficients in the lth layer, P l is an integer greater than or equal to 1, and l is an integer greater than or equal to 1.
  • the quantization indication information includes:
  • i 1,2,1 is a bitmap used to indicate whether the first coefficient included in the lth layer is non-zero
  • l is the index of the layer
  • N g, l is the number of the first coefficients in the gth group
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • N g, l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 0, and i is an integer greater than or equal to 0.
  • the quantification rules include one or more of the following:
  • the amplitude quantization value obtained after the amplitude quantization of the strongest coefficient in the gth group of the lth layer is
  • the amplitude quantization value obtained by the amplitude quantization of the i-th first coefficient of the g-th packet of the l-th layer is
  • f 2,l,g the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer, reason
  • the determined amplitude quantization value, f 2,l,g represents the gth packet of the lth layer and mapping rules between.
  • the quantification rules include one or more of the following:
  • bit width used for amplitude quantization processing of the strongest coefficient in the gth packet of the lth layer is:
  • B g,l is the number of finite values of the strongest coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 B g,l ;
  • the bit width used for the amplitude quantization processing of the first coefficient in the gth packet of the lth layer is: , Q g,l is the number of finite values of the first coefficient in the g-th group of the l-th layer after amplitude quantization processing, is the rounded-up value of log 2 Q g,l ;
  • the bit width used for phase quantization processing of the first coefficient in the gth packet of the lth layer is: M g,l is the number of finite values of the first coefficient in the gth group of the lth layer after phase quantization processing, is the rounded-up value of log 2 M g,l .
  • the quantification rules include:
  • phase quantization value obtained after the ith first coefficient of the ith grouping of the 1st layer carries out the phase quantization process is ⁇ l,i,g ;
  • f 3,l,g ( cl,i,g ) is the correspondence of c l,i,g in the gth group of the lth layer
  • the quantized phase of , f 3, lg represents the mapping rule between the phase of ⁇ l, i, g and c l, i, g in the gth group of the lth layer;
  • l is the index of the layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0 .
  • the quantification rules include:
  • the feedback rules include:
  • the communication device does not transmit to the network device and in, is the index of the group where the strongest coefficient of the lth layer is located, and the index of the strongest coefficient of the lth layer in the group g * is
  • the communication device sends i 1,1 to the network device.
  • the feedback rules include:
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and Quantization indication information of the corresponding first coefficient
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and quantization indication information c l,i,g of the corresponding first coefficient;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients Among them, the remaining first coefficients are the first coefficients that do not meet the rules 1)-3) and are not the strongest coefficients, and the amplitude quantization values of the remaining first coefficients satisfy and
  • the communication device does not send the remaining phase quantization indications c l,i,g of the first coefficients that do not meet the rules 1)-3), wherein the remaining first coefficients are those that do not meet the rules 1)-3).
  • the feedback rules include:
  • the communication device does not send i 1,1 to the network device.
  • the feedback rules include:
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the quantization indication information c l,i,g corresponding to the first coefficient of ;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients
  • the remaining first coefficients are the first coefficients that do not satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining first coefficients satisfy the
  • the communication device does not send the phase quantization indication c l,i,g of the remaining first coefficients, wherein the remaining first coefficients are the first coefficients that do not satisfy rules 6), 7) and 8), and the remaining first coefficients
  • FIG. 13 is a schematic diagram of an embodiment of the network device in the embodiment of the present application.
  • the network device can be deployed in a chip system, and the network device 1300 includes:
  • receiving the quantitative feedback information from the communication device may be received directly from the communication device, or may be received indirectly from the communication device, for example, received via other modules inside the network device (that is, input by other modules inside the network device). ).
  • the quantization feedback information is obtained by the communication device based on the feedback rule and the quantization indication information
  • the quantization indication information is obtained by the communication device quantizing the first coefficients in the G groups based on the Z quantization rules
  • the first coefficient is the channel state information-reference The coefficient corresponding to the signal (channel state information-reference signal, CSI-RS) port
  • the Z quantization rules are the quantization rules corresponding to the first coefficients in the G groups, G is an integer greater than 1, and Z is less than or a positive integer equal to G; each grouping includes one or more first coefficients, and each CSI-RS port corresponds to one or more first coefficients;
  • Each group is quantized using a quantization rule to obtain quantization indication information
  • the processing module 1302 is configured to construct a downlink channel based on the quantization indication information.
  • the G first coefficients grouped globally are obtained by grouping based on a grouping rule.
  • the transceiver module 1301 is further configured to send indication information to the communication device, where the indication information is used to indicate one or more of quantification rules, feedback rules and grouping rules used by the communication device.
  • the grouping rules include:
  • the G groups are divided based on the indexes of the CSI-RS ports, and the indexes of the CSI-RS ports in different groups are inconsistent;
  • the G groups are divided based on the patterns corresponding to the CSI-RS ports, and the patterns corresponding to the CSI-RS ports in different groups are inconsistent;
  • the G groups are divided based on CSI-RS resources, wherein one CSI-RS resource corresponds to multiple CSI-RS ports, different CSI-RS resources include the same or different numbers of ports, and the CSI corresponding to the CSI-RS ports in different groups -RS resources are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the comb index, wherein the comb index is used to identify one or more first coefficients in each CSI-RS port, and the CSI-RS in different groups
  • the port index and/or comb index are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the index of the delay component, wherein the index of the delay component is used to identify the delay position of the first coefficient in each CSI-RS port.
  • the indices and/or delay component indices of the CSI-RS ports in the CSI-RS port are inconsistent;
  • the G groups are divided based on the index of the CSI-RS port and/or the frequency domain component index, wherein the frequency domain component index is used to identify the frequency domain base corresponding to the first coefficient in each CSI-RS port, and different groups
  • the indices of the CSI-RS ports and/or the frequency domain component indices are inconsistent.
  • the quantization processing includes: amplitude quantization processing, phase quantization processing, and/or amplitude-phase joint quantization processing.
  • i 2,1,l is the magnitude quantization indication of the strongest coefficient of each grouping in the lth layer, where, is the amplitude quantization indication of the strongest coefficient in the gth packet of the lth layer;
  • i 2,2,l , i 2,2,l is the magnitude quantization indication of the first coefficient of each group in the lth layer, where, is the amplitude quantization indication of the first coefficient in the gth packet of the lth layer; is the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer; i ⁇ 0,...,Ng ,l -1 ⁇ ;
  • l is the index of the layer
  • N g,l is the number of first coefficients in the gth group
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • B g,l is the gth
  • N g,l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 0
  • g is less than or equal to G-1
  • i is an integer greater than or equal to
  • B g,l is an integer greater than or equal to 1
  • Q g, l are integers greater than or equal to 1.
  • the quantization indication information includes:
  • c l,g [c l,0,g ... c l,i,g ...c l,Ng-1,g ], c l,i,g is the i-th first coefficient of the g-th grouping of the l-th layer
  • the phase quantization indication of , i ⁇ 0,...,N g,l -1 ⁇ , c l,i,g ⁇ 0,...,M g,l -1 ⁇ , M g,l is the lth layer g
  • N g,l is the number of first coefficients in the gth group of the lth layer
  • g is an integer greater than or equal to 0 and g is less than or equal to G -1
  • l is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0.
  • the quantization indication information includes:
  • ⁇ is the maximum number of layers, ⁇ is an integer greater than or equal to 1, P l is the total number of first coefficients in the lth layer, P l is an integer greater than or equal to 1, and l is an integer greater than or equal to 1.
  • the quantization indication information includes:
  • i 1,2,1 is a bitmap used to indicate whether the first coefficient included in the lth layer is non-zero
  • l is the index of the layer
  • N g, l is the number of the first coefficients in the gth group
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • N g, l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 0, and i is an integer greater than or equal to 0.
  • the quantification rules include one or more of the following:
  • the amplitude quantization value obtained after the amplitude quantization of the strongest coefficient in the gth group of the lth layer is
  • the amplitude quantization value obtained by the amplitude quantization of the i-th first coefficient of the g-th packet of the l-th layer is
  • f 2,l,g the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer, reason
  • the determined amplitude quantization value, f 2,l,g represents the gth packet of the lth layer and mapping rules between.
  • the quantification rules include one or more of the following:
  • bit width used for amplitude quantization processing of the strongest coefficient in the gth packet of the lth layer is:
  • B g,l is the number of finite values of the strongest coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 B g,l ;
  • the bit width used for the amplitude quantization processing of the first coefficient in the gth packet of the lth layer is: Q g,l is the number of finite values of the first coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 Q g,l ;
  • the bit width used for phase quantization processing of the first coefficient in the gth packet of the lth layer is: M g,l is the number of finite values of the first coefficient in the gth group of the lth layer after phase quantization processing, is the rounded-up value of log 2 M g,l .
  • the quantification rules include:
  • phase quantization value obtained after the ith first coefficient of the ith grouping of the 1st layer carries out the phase quantization process is ⁇ l,i,g ;
  • f 3,l,g ( cl,i,g ) is the correspondence of c l,i,g in the gth group of the lth layer
  • the quantized phase of , f 3, lg represents the mapping rule between the phase of ⁇ l, i, g and c l, i, g in the gth group of the lth layer;
  • l is the index of the layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0 .
  • the quantification rules include:
  • the feedback rules include:
  • the communication device does not transmit to the network device and in, is the index of the group where the strongest coefficient of the lth layer is located, and the index of the strongest coefficient of the lth layer in the group g * is
  • the communication device sends i 1,1 to the network device.
  • the feedback rules include:
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and Quantization indication information of the corresponding first coefficient
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and quantization indication information c l,i,g of the corresponding first coefficient;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients Among them, the remaining first coefficients are the first coefficients that do not meet the rules 1)-3) and are not the strongest coefficients, and the amplitude quantization values of the remaining first coefficients satisfy and
  • the communication device does not send the remaining phase quantization indications c l,i,g of the first coefficients that do not meet the rules 1)-3), wherein the remaining first coefficients are those that do not meet the rules 1)-3).
  • the feedback rules include:
  • the communication device does not send i 1,1 to the network device.
  • the feedback rules include:
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the quantization indication information c l,i,g corresponding to the first coefficient of ;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients
  • the remaining first coefficients are the first coefficients that do not satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining first coefficients satisfy the
  • the communication device does not send the phase quantization indication c l,i,g of the remaining first coefficients, wherein the remaining first coefficients are the first coefficients that do not satisfy rules 6), 7) and 8), and the remaining first coefficients
  • i 2,1,1 is the amplitude quantization indication of the strongest coefficient of each packet in the first layer, wherein, is the amplitude quantization indication of the strongest coefficient in the gth packet of the lth layer;
  • i 2,2,l , i 2,2,l is the magnitude quantization indication of the first coefficient of each group in the lth layer, where, is the amplitude quantization indication of the first coefficient in the gth packet of the lth layer; is the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer; i ⁇ 0,...,Ng ,l -1 ⁇ ;
  • l is the index of the layer
  • N g,l is the number of first coefficients in the gth group
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • B g,l is the gth
  • N g,l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 0
  • g is less than or equal to G-1
  • i is an integer greater than or equal to
  • B g,l is an integer greater than or equal to 1
  • Q g, l are integers greater than or equal to 1.
  • the quantization indication information includes:
  • c l,g [c l,0,g ... c l,i,g ...c l,Ng-1,g ], c l,i,g is the i-th first coefficient of the g-th grouping of the l-th layer
  • the phase quantization indication of , i ⁇ 0,...,N g,l -1 ⁇ , c l,i,g ⁇ 0,...,M g,l -1 ⁇ , M g,l is the lth layer g
  • N g,l is the number of first coefficients in the gth group of the lth layer
  • g is an integer greater than or equal to 0 and g is less than or equal to G -1
  • l is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0.
  • the quantization indication information includes:
  • ⁇ is the maximum number of layers, ⁇ is an integer greater than or equal to 1, P l is the total number of first coefficients in the lth layer, P l is an integer greater than or equal to 1, and l is an integer greater than or equal to 1.
  • the quantization indication information includes:
  • i 1,2,1 is a bitmap used to indicate whether the first coefficient included in the lth layer is non-zero
  • l is the index of the layer
  • N g, l is the number of the first coefficients in the gth group
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • N g, l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 0, and i is an integer greater than or equal to 0.
  • the quantification rules include one or more of the following:
  • the amplitude quantization value obtained after the amplitude quantization of the strongest coefficient in the gth group of the lth layer is
  • the amplitude quantization value obtained by the amplitude quantization of the i-th first coefficient of the g-th packet of the l-th layer is
  • f 2,l,g the amplitude quantization indication of the i-th first coefficient in the g-th packet of the l-th layer, reason
  • the determined amplitude quantization value, f 2,l,g represents the gth packet of the lth layer and mapping rules between.
  • the quantification rules include one or more of the following:
  • bit width used for amplitude quantization processing of the strongest coefficient in the gth packet of the lth layer is:
  • B g,l is the number of finite values of the strongest coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 B g,l ;
  • the bit width used for the amplitude quantization processing of the first coefficient in the gth packet of the lth layer is: Q g,l is the number of finite values of the first coefficient in the gth group of the lth layer after amplitude quantization processing, is the rounded-up value of log 2 Q g,l ;
  • the bit width used for phase quantization processing of the first coefficient in the gth packet of the lth layer is: M g,l is the number of finite values of the first coefficient in the gth group of the lth layer after phase quantization processing, is the rounded-up value of log 2 M g,l .
  • the quantification rules include:
  • phase quantization value obtained after the ith first coefficient of the ith grouping of the 1st layer carries out the phase quantization process is ⁇ l,i,g ;
  • f 3,l,g ( cl,i,g ) is the correspondence of c l,i,g in the gth group of the lth layer
  • the quantized phase of , f 3, lg represents the mapping rule between the phase of ⁇ l, i, g and c l, i, g in the gth group of the lth layer;
  • l is the index of the layer
  • g is the index of the group
  • i is the index of the first coefficient in each group
  • l is an integer greater than or equal to 1
  • g is an integer greater than or equal to 1
  • i is an integer greater than or equal to 0 .
  • the quantification rules include:
  • the feedback rules include:
  • the communication device does not transmit to the network device and in, is the index of the group where the strongest coefficient of the lth layer is located, and the index of the strongest coefficient of the lth layer in the group g * is
  • the communication device sends i 1,1 to the network device.
  • the feedback rules include:
  • the communication device sends a message to the network device that satisfies the Corresponding quantization indication information
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and Quantization indication information of the corresponding first coefficient
  • the communication device sends a message to the network device that satisfies the and i and g satisfy both and quantization indication information c l,i,g of the corresponding first coefficient;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients Among them, the remaining first coefficients are the first coefficients that do not meet the rules 1)-3) and are not the strongest coefficients, and the amplitude quantization values of the remaining first coefficients satisfy and
  • the communication device does not send the remaining phase quantization indications c l,i,g of the first coefficients that do not meet the rules 1)-3), wherein the remaining first coefficients are those that do not meet the rules 1)-3).
  • the feedback rules include:
  • the communication device does not send i 1,1 to the network device.
  • the feedback rules include:
  • the communication device sends the quantization indication information corresponding to the first coefficient to the network device
  • the communication device sends a message to the network device that satisfies the The quantization indication information corresponding to the first coefficient of
  • the communication device sends a message to the network device that satisfies the quantization indication information c l,i,g corresponding to the first coefficient of ;
  • the communication device does not send the amplitude quantization indication of the remaining first coefficients
  • the remaining first coefficients are the first coefficients that do not satisfy the rules 6), 7) and 8), and the amplitude quantization values of the remaining first coefficients satisfy the
  • the communication device does not send the phase quantization indication c l,i,g of the remaining first coefficients, wherein the remaining first coefficients are the first coefficients that do not satisfy rules 6), 7) and 8), and the remaining first coefficients
  • An embodiment of the present application further provides a processing apparatus, where the processing apparatus includes a processor and an interface; the processor is configured to execute the information feedback method of any of the foregoing method embodiments.
  • the above-mentioned processing device may be a chip, and the processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, The processor may be a general-purpose processor, and is implemented by reading software codes stored in a memory, which may be integrated in the processor, or located outside the processor, and exists independently.
  • the hardware processing circuit can be composed of discrete hardware components or an integrated circuit. In order to reduce power consumption and reduce size, it is usually implemented in the form of integrated circuits.
  • the hardware processing circuit may include ASIC (application-specific integrated circuit, application-specific integrated circuit), or PLD (programmable logic device, programmable logic device); wherein, PLD may include FPGA (field programmable gate array, field programmable gate array) , CPLD (complex programmable logic device, complex programmable logic device) and so on.
  • These hardware processing circuits can be a single semiconductor chip packaged separately (such as packaged into an ASIC); they can also be integrated with other circuits (such as CPU, DSP) and packaged into a semiconductor chip, for example, can be formed on a silicon substrate
  • a variety of hardware circuits and CPUs are individually packaged into a chip, which is also called SoC, or circuits and CPUs for implementing FPGA functions can also be formed on a silicon substrate and individually enclosed into a single chip. Also known as SoPC (system on a programmable chip, programmable system on a chip).
  • the present application also provides a communication system, which includes at least one or more of a communication device and a network device.
  • Embodiments of the present application further provide a computer-readable storage medium, including instructions, which, when executed on a computer, cause the computer to control a communication device or a network device to execute any one of the implementations shown in the foregoing method embodiments.
  • An embodiment of the present application also provides a computer program product, the computer program product includes computer program code, and when the computer program code runs on a computer, the computer can execute any one of the implementations shown in the foregoing method embodiments.
  • An embodiment of the present application further provides a chip system, including a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the chip executes any one of the implementations shown in the foregoing method embodiments. Way.
  • Embodiments of the present application further provide a chip system, including a processor, where the processor is configured to call and run a computer program, so that the chip executes any one of the implementations shown in the foregoing method embodiments.
  • the device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be A physical unit, which can be located in one place or distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website, computer, communication device, computing equipment or data center to another website site, computer, communication device, computing device, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) transmission.
  • wire eg, coaxial cable, fiber optic, digital subscriber line (DSL)
  • wireless eg, infrared, wireless, microwave, etc.
  • the computer-readable storage medium can be any available medium that can be stored by a computer, or a data storage device such as a communication device, a data center, or the like that includes one or more available media integrated.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), and the like.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of units is only a logical function division.
  • there may be other division methods for example, multiple units or components may be combined or integrated. to another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a computer-readable storage medium.
  • the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present application.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

本申请实施例公开一种信息反馈方法，包括：通信装置基于Z个量化规则对G个分组中第一系数进行量化处理得到量化指示信息，第一系数为信道状态信息-参考信号CSI-RS端口对应的系数，其中，Z个量化规则为G个分组中第一系数对应的量化规则，G为大于1的整数，Z为小于或等于G的正整数；每个分组包括一个或多个第一系数，每个CSI-RS端口对应一个或多个第一系数；每个分组使用一个量化规则进行量化处理，得到量化指示信息；通信装置基于量化指示信息和反馈规则，确定量化反馈信息。针对不同的第一系数可以采用不同的量化规则，以实现非均匀量化。在较小反馈开销的前提下，提升CSI反馈的精度。

Description

一种信息反馈方法以及相关装置 技术领域
本申请涉及通信技术领域，尤其涉及一种信息反馈方法以及相关装置。
背景技术
大规模多入多出(Massive MIMO(Multiple Input Multiple Output))技术是业界公认的第五代(5th Generation，5G)通信系统的关键技术之一。Massive MIMO通过使用大规模天线，实现频谱效率的显著提升。网络装置获取的信道状态信息(Channel State Information，CSI)的准确性在很大程度上决定了Massive MIMO的性能。在频分双工(frequency division duplex，FDD)系统或信道互易性不能很好满足的时分双工(time division duplex，TDD)系统中，通常采用码本来量化CSI信息。因此，码本设计是Massive MIMO的一个关键问题。
现有技术中，从多个备选码字中选取最优的一个码字，该被选出的码字以预编码矩阵指示(precoding matrix indicator，PMI)的形式作为CSI信息上报。新无线(new radio,NR)技术的massive MIMO对信道状态信息反馈提出更高要求。
在R17协议中，一种可能的方法为利用信道的互易性确定信道状态信息，具体的，码本的非零系数采用均衡量化。量化规则较为简单，并未充分考虑信道的特性，造成量化损失较大。基于此，需要提供一种信息反馈方法，在较小反馈开销的前提下，提高信道状态信息反馈的精度。
发明内容
第一方面，本申请实施例提出一种信息反馈方法，包括：
通信装置基于Z个量化规则对G个分组中第一系数进行量化处理得到量化指示信息，所述第一系数为信道状态信息-参考信号(channel state information-reference signal，CSI-RS)端口(port)对应的系数，其中，Z个量化规则为G个分组中所述第一系数对应的量化规则，G为大于1的整数，Z为小于或等于G的正整数；每个分组包括一个或多个所述第一系数，每个CSI-RS端口对应一个或多个第一系数；每个分组使用一个量化规则进行量化处理，得到量化指示信息；通信装置基于量化指示信息和反馈规则，确定量化反馈信息。
可以理解，所述信息反馈方法，可以由通信装置执行，所述通信装置可以是终端设备，或者，也可以是配置于终端设备中的芯片、芯片系统或电路。
需要说明的是，第一系数也称为叠加系数，或组合系数，或角度时延对(angle-delay pair)对应的叠加系数等，此处不作限制。
本申请实施例中，针对不同的第一系数可以采用不同的量化规则，以实现非均匀量化。在较小反馈开销的前提下，提升CSI反馈的精度。
结合第一方面，在第一方面的一种可能的实现方式中，
G个分组为全局的第一系数基于分组规则进行分组得到。
具体的，G个分组为全局的第一系数基于分组规则进行分组得到。需要说明的是，该 全局的第一系数可以是所有层的第一系数，也可以是某一层或多层的第一系数。示例性的，以该全局的第一系数为某一层第一系数为例，该某一层的第一系数分为G个分组。需要说明的是，该全局的第一系数还可以是所有层的第一系数，则该所有层的第一系数分为G个分组。或者，该所有层中每一层的第一系数都分为G个分组，此处不作限制。通过对多个第一系数进行分组，以实现非均匀量化。在较小反馈开销的前提下，提升CSI反馈的精度。
结合第一方面，在第一方面的一种可能的实现方式中，通信装置向网络装置发送量化反馈信息。
结合第一方面，在第一方面的一种可能的实现方式中，通信装置接收来自网络装置的指示信息，指示信息用于指示通信装置使用的量化规则、反馈规则和分组规则中的一项或多项。具体的，网络装置可以通过多种方式向通信装置发送该指示信息，下面分别进行说明：
(1)、可选的，该指示信息包括量化规则、分组规则和反馈规则中的一项或多项。
示例性的，网络装置向通信装置发送的指示信息包括：量化规则A、分组规则A和反馈规则A。通信装置基于该指示信息中的分组规则A，对全局的第一系数进行分组处理。其次，通信装置基于该指示信息中的量化规则A对各个分组中第一系数进行量化处理得到量化指示信息。再次，通信装置基于该指示信息中的反馈规则A对量化指示信息进行处理，得到量化反馈信息。可选的，当量化规则、分组规则或反馈规则包括一个或多个子规则时，量化规则、分组规则和反馈规则中的一项或多项，包括量化规则子规则、分组规则子规则和反馈规则子规则中的一项或多项。(2)、可选的，该指示信息包括量化规则的索引(index)、分组规则的索引和反馈规则的索引中的一项或多项。
示例性的，该指示信息可以为值为0或者1的指示信息，比如当值为1110时表示对应于分组规则A，当值为1111时表示对应于分组规则B。该指示信息也可以为字符串形式“quantization A”，或“quantization B”等通过具体含义指示对应的量化规则、分组规则和反馈规则中的一项或多项。
通信装置中预先配置量化规则、分组规则和反馈规则中的一项或多项。该预先配置可以是协议约定，也可以由网络装置配置，例如，可以是通信装置接入网络装置时由网络装置配置，此处不作限制。通信装置接收该指示信息后，根据该指示信息中包括的索引，确定需要使用的量化规则、分组规则和反馈规则中的一项或多项中的一项或多项。网络装置网络装置和反馈规则中的一项或多项。
示例性的，网络装置可以通过以下信令或消息，向通信装置发送该指示信息，包括但不限于：调度下行控制信息(downlink control information，DCI),无线资源控制(radio resource control，RRC)信令，或媒体访问控制子层控制元素信令(media access control control element，MAC CE)。
在一种实现方案中，当协议预先约定网络装置与通信装置使用的量化规则、分组规则和反馈规则中的一项或多项时，则网络装置无需向通信装置发送该指示信息。在另一种实现方案中，通信装置与该网络装置协商确定使用的量化规则、分组规则和反馈规则中的一项或多项。
本申请实施例中，网络装置可以通过多种方式指示通信装置使用的至少一项规则，如量化规则、分组规则和反馈规则。提升了CSI反馈的精度。
结合第一方面，在第一方面的一种可能的实现方式中，
G个分组基于CSI-RS端口的索引进行划分，不同的分组中CSI-RS端口的索引不一致；
或者，G个分组基于CSI-RS端口对应的图样(pattern)进行划分，不同的分组中CSI-RS端口对应的图样不一致；不同CSI-RS端口对应的第一系数的数目可以一致也可以不一致。不同图样对应的CSI-RS端口的数目可以一致也可以不一致。不同分组对应的图样的数目可以一致也可以不一致，此处不作限定。图样(pattern)也称为导频图样。
或者，G个分组基于CSI-RS资源进行划分，其中，一个CSI-RS资源对应多个CSI-RS端口，不同的CSI-RS资源对应的CSI-RS端口数相同或不同，不同的分组中CSI-RS端口对应的CSI-RS资源不一致。需要说明的是，每个CSI-RS端口所对应的系数的数目大于或等于1。不同CSI-RS端口对应的第一系数的数目可以一致也可以不一致。不同资源对应的CSI-RS端口的数目可以一致也可以不一致。不同分组对应的资源的数目可以一致也可以不一致，此处不作限定。
或者，G个分组基于CSI-RS端口的索引，和/或梳分索引进行划分，其中，梳分索引用于标识每个CSI-RS端口中一个或多个第一系数，不同的分组中CSI-RS端口的索引和/或梳分索引不一致。具体的，梳分指的是在频域上间隔抽取资源块(Resource Block，RB)。基于梳分进行划分，仍然使用一种CSI-RS资源，并保持CSI-RS设计与R15/R16相同。
或者，G个分组基于CSI-RS端口的索引，和/或，时延分量索引进行划分，其中，时延分量索引用于标识每个CSI-RS端口中第一系数所在的时延位置，不同的分组中CSI-RS端口的索引和/或时延分量索引不一致。
或者，G个分组基于CSI-RS端口的索引，和/或，频域分量索引进行划分，其中，频域分量索引用于标识每个CSI-RS端口中第一系数对应的频域基底，不同的分组中CSI-RS端口的索引和/或频域分量索引不一致。
本申请实施例中，可以通过多种分组规则对第一系数进行分组，提升了方案的实现灵活性。通过精细化的分组，提升了CSI反馈的精度。需要说明的是，对于不同层可以采用不同的分组规则；也可以对所有层采用相同的分组规则，即所有层的分组规则是公共的；还可以部分层采用相同的分组规则，部分层采用不同的分组规则，此处不作限制。
结合第一方面，在第一方面的一种可能的实现方式中，量化指示信息包括：
i 2,1,l，i 2,1,l为第l层中各个分组的最强系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000001
为第l层第g个分组中最强系数的幅度量化指示；
Figure PCTCN2021082539-appb-000002
i 2,2,l，i 2,2,l为第l层中各个分组的第一系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000003
为第l层第g个分组中第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000004
为第l层第g个分组中第i个第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000005
i∈{0,…,N g,l-1}；
其中，l为层的索引，N g,l为第l层第g个分组中第一系数的数量，g为分组的索引，i 为每个分组中第一系数的索引，B g,l为第l层第g个分组中最强系数进行幅度量化处理后有限取值的数目，Q g,l为第l层第g个分组中第一系数进行幅度量化处理后有限取值的数目，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，B g,l为大于或等于1的整数，Q g,l为大于或等于1的整数。
应理解，上文分组中“最强系数”即指，分组中第一系数中能量最大的系数。下文中对于“最强系数”也是针对第一系数而言。
结合第一方面，在第一方面的一种可能的实现方式中，量化指示信息包括：
i 2,3,l，i 2,3,l为第l层中各个分组的第一系数的相位量化指示，其中，i 2,3,l＝[c l,0…c l,g…c l,G-1]，c l,g为第l层第g个分组中第一系数的相位量化指示；
c l,g＝[c l,0,g…c l,i,g…c l,Ng,l-1,g]，c l,i,g为第l层第g个分组第i个第一系数的相位量化指示，i∈{0,…,N g,l-1}，c l,i,g∈{0,…，M g,l-1}，M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，N g,l为第l层第g个分组中第一系数的数量，g为大于或等于0的整数，g小于或等于G-1，l为大于或等于1的整数，i为大于或等于0的整数。
结合第一方面，在第一方面的一种可能的实现方式中，量化指示信息包括：
i 1,l，i 1,l为第l层的最强系数对应的索引，其中，i 1,l∈{0,1,…,P l-1}，l＝1,…,υ；
υ为最大层数，υ为大于或等于1的整数，P l为第l层中第一系数的总数，P l为大于或等于1的整数，l为大于或等于1的整数。
结合第一方面，在第一方面的一种可能的实现方式中，量化指示信息包括：
Figure PCTCN2021082539-appb-000006
其中，i 1,2,l为用于指示第l层中包括的第一系数是否非零的指示，例如，位图；
Figure PCTCN2021082539-appb-000007
指示第l层第g个分组第i个第一系数是否非零。
当
Figure PCTCN2021082539-appb-000008
指示第l层第g个分组第i个第一系数为0，
Figure PCTCN2021082539-appb-000009
指示第l层第g个分组第i个系数可以不执行幅度量化处理和相位量化处理，或者幅度相位联合量化；
当
Figure PCTCN2021082539-appb-000010
指示第l层第g个分组第i个第一系数为非零系数，
Figure PCTCN2021082539-appb-000011
指示第l层第g个分组第i个第一系数执行幅度量化处理和相位量化处理，或者幅度相位联合量化；
l为层的索引，N g,l为第l层第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
结合第一方面，在第一方面的一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000012
Figure PCTCN2021082539-appb-000013
其中，
Figure PCTCN2021082539-appb-000014
为第l层第g个分组中最强系数的幅度量化指示，
Figure PCTCN2021082539-appb-000015
为由
Figure PCTCN2021082539-appb-000016
确定的幅度量化值，f 1,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000017
与
Figure PCTCN2021082539-appb-000018
之间的映射规则；该映射规则可以由幅度量化表格或函数确定，此处不作限制。
第l层第g个分组第i个第一系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000019
Figure PCTCN2021082539-appb-000020
其中，
Figure PCTCN2021082539-appb-000021
为第l层第g个分组中第i个第一系数的幅度量化指示，
Figure PCTCN2021082539-appb-000022
为由
Figure PCTCN2021082539-appb-000023
确定的幅度量化值，f 2,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000024
与
Figure PCTCN2021082539-appb-000025
之间的映射规则。该映射规则可以由幅度量化表格或函数确定，此处不作限制。
结合第一方面，在第一方面的一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000026
B g,l为第l层第g个分组中最强系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000027
为对log 2B g,l的向上取整后的数值；
第l层第g个分组中第一系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000028
Q g,l为第l层第g个分组中第一系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000029
为对log 2Q g,l的向上取整后的数值；
第l层第g个分组中第一系数进行相位量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000030
M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000031
为对log 2M g,l的向上取整后的数值。
结合第一方面，在第一方面的一种可能的实现方式中，量化规则包括：
第l层第g个分组第i个第一系数进行相位量化处理后得到的相位量化值为φ l,i,g；
其中，
Figure PCTCN2021082539-appb-000032
c l，i，g∈{0，...，M g，l-1}，f 3，l，g(c l，i，g)为第l层第g个分组中c l,i,g对应的量化相位，f 3,l.g表示第l层第g个分组中φ l,i,g的相位与c l,i,g之间的映射规则；该映射规则可以由相位量化表格或函数确定，此处不作限制。
l为层的索引，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
结合第一方面，在第一方面的一种可能的实现方式中，量化规则包括：
当相位量化处理采取均匀量化，则
Figure PCTCN2021082539-appb-000033
结合第一方面，在第一方面的一种可能的实现方式中，不反馈最强系数的量化指示信息，对最强系数进行归一化处理，反馈最强系数的位置信息(索引)。具体的反馈规则，包括：
Figure PCTCN2021082539-appb-000034
且
Figure PCTCN2021082539-appb-000035
通信装置不向网络装置发送
Figure PCTCN2021082539-appb-000036
和
Figure PCTCN2021082539-appb-000037
其中，
Figure PCTCN2021082539-appb-000038
为第l层最强系数所在分组的索引，第l层的最强系数在分组g *中的索引为
Figure PCTCN2021082539-appb-000039
通信装置向网络装置发送i 1,l。通过上述方法，在保证CSI反馈精度的前提下，节省了信令开销。
结合第一方面，在第一方面的一种可能的实现方式中，以第l层为例，反馈规则包括以下一项或多项：
规则1)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000040
对应的量化指示信息
Figure PCTCN2021082539-appb-000041
规则2)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000042
且i,g同时满足
Figure PCTCN2021082539-appb-000043
且
Figure PCTCN2021082539-appb-000044
对应的第一系数的量化指示信息
Figure PCTCN2021082539-appb-000045
规则3)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000046
且i,g同时满足
Figure PCTCN2021082539-appb-000047
且
Figure PCTCN2021082539-appb-000048
对应的第一系数的量化指示信息c l,i,g；
规则4)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000049
其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000050
且
Figure PCTCN2021082539-appb-000051
规则5)、通信装置不发送剩余的不满足规则1)-3)的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数 的量化相位满足f 3,l,g(c l,i,g)＝0，
Figure PCTCN2021082539-appb-000052
且
Figure PCTCN2021082539-appb-000053
通过上述方法，在保证CSI反馈精度的前提下，节省了信令开销。
示例性的，令第l层中待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000054
其中，
Figure PCTCN2021082539-appb-000055
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；
其中，
Figure PCTCN2021082539-appb-000056
示例性的，K NZ小于或等于C*K 0，其中，K 0为通信装置与网络装置约定或协议预先定义的一个数值，用来控制反馈系数的个数，C为大于或等于1的整数。
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000057
规则1)、针对第l层为例，l的取值范围为：l＝1,2,….,υ，通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000058
对应的量化指示信息
Figure PCTCN2021082539-appb-000059
规则2)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000060
且i,g同时满足
Figure PCTCN2021082539-appb-000061
和
Figure PCTCN2021082539-appb-000062
的第一系数对应的K NZ-υ个量化指示信息
Figure PCTCN2021082539-appb-000063
通信装置向网络装置发送的量化指示信息
Figure PCTCN2021082539-appb-000064
数目为K NZ-υ，原因是每一层的最强系数的位置信息已反馈，因此无需反馈每一层的最强系数对应的量化指示信息；
规则3)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000065
且i,g同时满足
Figure PCTCN2021082539-appb-000066
和
Figure PCTCN2021082539-appb-000067
的第一系数对应的K NZ-υ个量化指示信息c l,i,g。通信装置向网络装置发送的量化指示信息c l,i,g数目为K NZ-υ，原因是每一层的最强系数的位置信息已反馈，因此无需反馈每一层的最强系数对应的量化指示信息；
规则4)、通信装置不发送剩余的P-K NZ个第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000068
其中，剩余的P-K NZ个第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的P-K NZ个第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000069
且
Figure PCTCN2021082539-appb-000070
规则5)、通信装置不发送剩余的P-K NZ个第一系数的相位量化指示c l,i,g，其中，剩余的P-K NZ个第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的P-K NZ个第一系数的量化相位满足f 3,l,g(c l,i,g)＝0，
Figure PCTCN2021082539-appb-000071
且
Figure PCTCN2021082539-appb-000072
结合第一方面，在第一方面的一种可能的实现方式中，反馈最强系数的量化指示信息，不反馈最强系数的位置信息(索引)。具体的反馈规则，包括以下一项或多项：
通信装置不向网络装置发送i 1,l。
规则6)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000073
规则7)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000074
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000075
规则8)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000076
的第一系数对应的量化指示信息c l,i,g；
规则9)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000077
其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000078
规则10)、通信装置不发送剩余的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
通过上述方法，进一步提升CSI的反馈精度。
示例性的，令第l层中CSI-RS端口对应的待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000079
其中，
Figure PCTCN2021082539-appb-000080
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；其中，
Figure PCTCN2021082539-appb-000081
示例性的，K NZ小于或等于C*K 0，其中，K 0为通信装置与网络装置约定或协议预先定义的一个数值，用来控制反馈系数的个数，C为大于或等于1的整数。
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000082
规则6)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000083
规则7)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000084
的第一系数对应的K NZ个量化指示信息
Figure PCTCN2021082539-appb-000085
规则8)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000086
的第一系数对应的K NZ个量化指示信息c l,i,g；
规则9)、通信装置不发送剩余的P-K NZ个第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000087
其中，剩余的P-K NZ个第一系数为不满足规则6)、7)和8)的第一系数，剩余的P-K NZ个第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000088
规则10)、通信装置不发送剩余的P-K NZ个第一系数的相位量化指示c l,i,g，其中，剩余的P-K NZ个第一系数为不满足规则6)、7)和8)的第一系数，剩余的P-K NZ个第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
结合第一方面，在第一方面的一种可能的实现方式中，量化指示信息包括：
i 3,1,l，i 3,1,l为第l层中各个分组的最强系数的幅度相位联合量化指示，其中，
Figure PCTCN2021082539-appb-000089
为第l层第g个分组中最强系数的幅度相位联合量化指示；
Figure PCTCN2021082539-appb-000090
i∈{0,…,N g,l-1}；
i 3,2,l，i 3,2,l为第l层中各个分组的第一系数的幅度相位联合量化指示，其中，
Figure PCTCN2021082539-appb-000091
为第l层第g个分组中第一系数的幅度相位联合量化指示；
Figure PCTCN2021082539-appb-000092
为第l层第g个分组中第一系数的幅度相位联合量化指示；
Figure PCTCN2021082539-appb-000093
其中，l为层的索引，N g,l为第l层第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，A g,l为第l层第g个分组中最强系数进行幅度相位联合量化处理后有限取值的数目，L g,l为第l层第g个分组中第一系数进行幅度相位联合量化处理后有限取值的数目，l为大于或等于0的整数，N g为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，A g,l为大于或等于1的整数，L g,l为大于或等于1的整数。
结合第一方面，在第一方面的一种可能的实现方式中，量化规则包括：
第l层第g个分组中最强系数进行幅度相位联合量化处理后得到的幅度相位联合量化值为
Figure PCTCN2021082539-appb-000094
Figure PCTCN2021082539-appb-000095
其中，
Figure PCTCN2021082539-appb-000096
为由
Figure PCTCN2021082539-appb-000097
确定的幅度相位联合量化值，f 4,l,g表示第g个分组中
Figure PCTCN2021082539-appb-000098
与
Figure PCTCN2021082539-appb-000099
之间的映射规则；
第l层第g个分组第i个第一系数进行幅度相位联合量化处理后得到的幅度相位联合量 化值为
Figure PCTCN2021082539-appb-000100
Figure PCTCN2021082539-appb-000101
其中，
Figure PCTCN2021082539-appb-000102
为由
Figure PCTCN2021082539-appb-000103
确定的幅度相位联合量化值，f 5,l,g表示第l层第g个分组中
Figure PCTCN2021082539-appb-000104
与
Figure PCTCN2021082539-appb-000105
之间的映射规则。
结合第一方面，在第一方面的一种可能的实现方式中，不反馈最强系数的量化指示信息，对最强系数进行归一化处理，反馈最强系数的位置信息(索引)。具体的反馈规则，包括：
Figure PCTCN2021082539-appb-000106
通信装置不向网络装置发送
Figure PCTCN2021082539-appb-000107
和
Figure PCTCN2021082539-appb-000108
其中，
Figure PCTCN2021082539-appb-000109
为第l层最强系数所在分组的索引，第l层的最强系数在分组g *中的索引为
Figure PCTCN2021082539-appb-000110
通信装置向网络装置发送i 1,l。通过上述方法，在保证CSI反馈精度的前提下，节省了信令开销。
结合第一方面，在第一方面的一种可能的实现方式中，反馈规则包括以下一项或多项：
规则11)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000111
对应的量化指示信息
Figure PCTCN2021082539-appb-000112
规则12)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000113
且i,g同时满足
Figure PCTCN2021082539-appb-000114
和
Figure PCTCN2021082539-appb-000115
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000116
规则13)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000117
其中，剩余的第一系数为不满足规则11)-12)的第一系数且不为最强系数，剩余的第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000118
且
Figure PCTCN2021082539-appb-000119
示例性的，令第l层中CSI-RS端口对应的待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000120
其中，
Figure PCTCN2021082539-appb-000121
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；
其中，
Figure PCTCN2021082539-appb-000122
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000123
规则11)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000124
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000125
规则12)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000126
且i,g同时满足
Figure PCTCN2021082539-appb-000127
和
Figure PCTCN2021082539-appb-000128
的第一系数对应的K NZ-υ个量化指示信息
Figure PCTCN2021082539-appb-000129
通信装置向网络装置发送的量化指示信息
Figure PCTCN2021082539-appb-000130
数目为K NZ-υ，原因是每一层的最强系数的位置信息已反馈，因此无需反馈每一层的最强系数对应的量化指示信息；
规则13)、通信装置不发送剩余的P-K NZ个第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000131
其中，剩余的P-K NZ个第一系数为不满足规则11)-12)的第一系数且不为最强系数，剩余的P-K NZ个第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000132
且
Figure PCTCN2021082539-appb-000133
通过上述方法，在保证CSI反馈精度的前提下，节省了信令开销。
结合第一方面，在第一方面的一种可能的实现方式中，反馈最强系数的量化指示信息，不反馈最强系数的位置信息(索引)。具体的反馈规则，包括以下一项或多项：
通信装置不向网络装置发送i 1,l；
规则14)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000134
规则15)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000135
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000136
规则16)、通信装置不发送剩余的第一系数的幅度相位联合量化指示
Figure PCTCN2021082539-appb-000137
其中，剩余的第一系数为不满足规则14)和15)的第一系数，剩余的第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000138
通过上述方法，进一步提升了CSI的反馈精度。
示例性的，令第l层中CSI-RS端口对应的待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000139
其中，
Figure PCTCN2021082539-appb-000140
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；其中，
Figure PCTCN2021082539-appb-000141
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000142
规则14)、通信装置向网络装置发送第一系数的量化指示信息
Figure PCTCN2021082539-appb-000143
规则15)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000144
的第一系数对应的K NZ个量化指示信息
Figure PCTCN2021082539-appb-000145
规则16)、通信装置不发送剩余的P-K NZ个第一系数的幅度相位联合量化指示
Figure PCTCN2021082539-appb-000146
其中，剩余的P-K NZ个第一系数为不满足规则14)和15)的第一系数，剩余的P-K NZ个第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000147
结合第一方面，在第一方面的一种可能的实现方式中，量化规则适用的码本为：
Figure PCTCN2021082539-appb-000148
其中，W 1为自由选择矩阵，W 1的一种特殊配置为单位矩阵。W 1也称为端口选择矩阵，以便从P个CSI-RS端口中自由选择K 1个端口，或者从P/2个CSI-RS端口中自由选择K 1/2个端口。需要说明的是，P为正整数，P/2为正整数，K 1为正整数，P是用于端口选择的CSI-RS端口的数量。
W 2为P个CSI-RS端口对应的叠加系数，叠加系数为P个CSI-RS端口的非零系数根据量化规则进行量化处理得到的量化值。
Figure PCTCN2021082539-appb-000149
为DFT的压缩矩阵，其中，N 3＝N CQISubband*R，并且M v>＝1。R定义为每个CQI子带包含的预编码矩阵(Precoding Matrix Indicator，PMI)子带个数。网络装置可以禁用
Figure PCTCN2021082539-appb-000150
禁用时，
Figure PCTCN2021082539-appb-000151
为全1向量(all-one vector)。
结合第一方面，在第一方面的一种可能的实现方式中，量化规则适用的码本为：W＝W 1W 2；
其中，W 1为端口选择矩阵，W 2为P个CSI-RS端口对应的叠加系数，叠加系数为P个CSI-RS端口的非零系数根据量化规则进行量化处理得到的量化值。W 1还可以是离散傅里叶变换DFT的压缩矩阵，或者其它空域压缩矩阵，例如：W 1为空频联合压缩矩阵，此处不作限制。
第二方面，本申请实施例提出一种信息反馈方法，包括：
网络装置接收量化反馈信息；量化反馈信息为通信装置基于反馈规则和量化指示信息得到，量化指示信息为通信装置基于Z个量化规则对G个分组中第一系数进行量化处理得到，所述第一系数为信道状态信息-参考信号CSI-RS端口对应的系数；其中，Z个量化规则为G个分组中所述第一系数对应的量化规则，G为大于1的整数，Z为小于或等于G的正整数；每个分组包括一个或多个第一系数，每个CSI-RS端口对应一个或多个第一系数；每 个分组使用一个量化规则进行量化处理，得到量化指示信息；
网络装置基于量化指示信息构建下行信道。
可以理解，所述信息反馈方法，可以由网络装置执行，所述网络装置可以是网络装置，或者，也可以是配置于网络装置中的芯片、芯片系统或电路。可选的，上述“接收”还可以理解为“输入”。
本申请实施例中，针对不同的第一系数可以采用不同的量化规则，以实现非均匀量化。在较小反馈开销的前提下，提升CSI反馈的精度。
结合第二方面，在第二方面的一种可能的实现方式中，
G个分组为全局的第一系数基于分组规则进行分组得到。
具体的，G个分组为全局的第一系数基于分组规则进行分组得到。需要说明的是，该全局的第一系数可以是所有层的第一系数，也可以是某一层或多层的第一系数。示例性的，以该全局的第一系数为某一层第一系数为例，该某一层的第一系数分为G个分组。需要说明的是，该全局的第一系数还可以是所有层的第一系数，则该所有层的第一系数分为G个分组。或者，该所有层中每一层的第一系数都分为G个分组，此处不作限制。通过对多个第一系数进行分组，以实现非均匀量化。在较小反馈开销的前提下，提升CSI反馈的精度。
结合第二方面，在第二方面的一种可能的实现方式中，网络装置向通信装置发送指示信息，指示信息用于指示通信装置使用的量化规则、反馈规则和/或分组规则。具体的，网络装置可以通过多种方式向通信装置发送该指示信息，下面分别进行说明：
(1)、可选的，该指示信息包括量化规则、分组规则和/或反馈规则。
示例性的，网络装置向通信装置发送的指示信息包括：量化规则A、分组规则A和反馈规则A。通信装置基于该指示信息中的分组规则A，对全局的第一系数进行分组处理。其次，通信装置基于该指示信息中的量化规则A对各个分组中第一系数进行量化处理得到量化指示信息。再次，通信装置基于该指示信息中的反馈规则A对量化指示信息进行处理，得到量化反馈信息。
(2)、可选的，该指示信息包括量化规则的索引(index)、分组规则的索引和反馈规则的索引。
该指示信息可以为值为0或者1的指示信息，比如当值为1110时表示对应于分组规则A，当值为1111时表示对应于分组规则B。该指示信息也可以为字符串形式“quantization A”，或“quantization B”等通过具体含义指示对应的量化规则、分组规则和反馈规则中的一项或多项。
通信装置中预先配置量化规则、分组规则和/或反馈规则。该预先配置可以是协议约定，也可以是通信装置初次接入该网络装置时由该网络装置配置，此处不作限制。通信装置接收该指示信息后，根据该指示信息中包括的索引，确定需要使用的量化规则、分组规则和反馈规则中的一项或多项。通信装置中预先配置量化规则、分组规则和/或反馈规则。该预先配置可以是协议约定，也可以是通信装置初次接入该网络装置时由该网络装置配置，此处不作限制。通信装置接收该指示信息后，根据该指示信息中包括的索引，确定需要使用的量化规则、分组规则和反馈规则中的一项或多项。
示例性的，网络装置可以通过以下信令或消息，向通信装置发送该指示信息，包括但不限于：调度下行控制信息(downlink control information，DCI),无线资源控制(radio resource control，RRC)信令，或媒体访问控制子层控制元素信令(media access control control element，MAC CE)。
在一种实现方案中，当协议预先约定网络装置与通信装置使用的量化规则、分组规则和反馈规则时，则网络装置无需向通信装置发送该指示信息。在另一种实现方案中，当该通信装置初次接入该网络装置时，该通信装置与该网络装置协商确定使用的量化规则、分组规则和反馈规则。
本申请实施例中，网络装置可以通过多种方式指示通信装置使用的量化规则、分组规则和反馈规则。提升了CSI反馈的精度。
结合第二方面，在第二方面的一种可能的实现方式中，
G个分组基于CSI-RS端口的索引进行划分，不同的分组中CSI-RS端口的索引不一致；
或者，G个分组基于CSI-RS端口对应的图样进行划分，不同的分组中CSI-RS端口对应的图样不一致；不同CSI-RS端口对应的第一系数的数目可以一致也可以不一致。不同图样对应的CSI-RS端口的数目可以一致也可以不一致。不同分组对应的图样的数目可以一致也可以不一致，此处不作限定。
或者，G个分组基于CSI-RS资源进行划分，其中，一个CSI-RS资源对应多个CSI-RS端口，不同的CSI-RS资源包括端口数相同或不同，不同的分组中CSI-RS端口对应的CSI-RS资源不一致。需要说明的是，每个CSI-RS端口所对应的系数的数目大于或等于1。不同CSI-RS端口对应的第一系数的数目可以一致也可以不一致。不同资源对应的CSI-RS端口的数目可以一致也可以不一致。不同分组对应的资源的数目可以一致也可以不一致，此处不作限定。
或者，G个分组基于CSI-RS端口的索引，和/或梳分索引进行划分，其中，梳分索引用于标识每个CSI-RS端口中一个或多个第一系数，不同的分组中CSI-RS端口的索引和/或梳分索引不一致。具体的，梳分指的是在频域上间隔抽取资源块(Resource Block，RB)。基于梳分进行划分，仍然使用一种CSI-RS资源，并保持CSI-RS设计与R15/R16相同。
或者，G个分组基于CSI-RS端口的索引，和/或，时延分量索引进行划分，其中，时延分量索引用于标识每个CSI-RS端口中第一系数所在的时延位置，不同的分组中CSI-RS端口的索引和/或时延分量索引不一致。
或者，G个分组基于CSI-RS端口的索引，和/或，频域分量索引进行划分，其中，频域分量索引用于标识每个CSI-RS端口中第一系数对应的频域基底，不同的分组中CSI-RS端口的索引和/或频域分量索引不一致。
本申请实施例中，可以通过多种分组规则对第一系数进行分组，提升了方案的实现灵活性。通过精细化的分组，提升了CSI反馈的精度。
结合第二方面，在第二方面的一种可能的实现方式中，量化指示信息包括：
i 2,1,l，i 2,1,l为第l层中各个分组的最强系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000152
为第l层第g个分组中最强系数的幅度量化指示；
Figure PCTCN2021082539-appb-000153
i 2,2,l，i 2,2,l为第l层中各个分组的第一系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000154
为第l层第g个分组中第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000155
为第l层第g个分组中第i个第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000156
i∈{0,…,N g,l-1}；
其中，l为层的索引，N g,l为第l层第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，B g,l为第l层第g个分组中最强系数进行幅度量化处理后有限取值的数目，Q g,l为第l层第g个分组中第一系数进行幅度量化处理后有限取值的数目，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，g小于或 等于G-1，i为大于或等于0的整数，B g,l为大于或等于1的整数，Q g,l为大于或等于1的整数。
结合第二方面，在第二方面的一种可能的实现方式中，量化指示信息包括：
i 2,3,l，i 2,3,l为第l层中各个分组的第一系数的相位量化指示，其中，i 2,3,l＝[c l,0…c l,g…c l,G-1]，c l,g为第l层第g个分组中第一系数的相位量化指示；
c l,g＝[c l,0,g…c l,i,g…c l,Ng,l-1,g]，c l,i,g为第l层第g个分组第i个第一系数的相位量化指示，i∈{0,…,N g,l-1}，c l,i,g∈{0,…，M g,l-1}，M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，N g,l为第l层第g个分组中第一系数的数量，g为大于或等于0的整数，g小于或等于G-1，l为大于或等于1的整数，i为大于或等于0的整数。
结合第二方面，在第二方面的一种可能的实现方式中，量化指示信息包括：
i 1,l，i 1,l为第l层的最强系数对应的索引，其中，i 1,l∈{0,1,…,P l-1}，l＝1,…,υ；
υ为最大层数，υ为大于或等于1的整数，P l为第l层中第一系数的总数，P l为大于或等于1的整数，l为大于或等于1的整数。
结合第二方面，在第二方面的一种可能的实现方式中，量化指示信息包括：
Figure PCTCN2021082539-appb-000157
其中，i 1,2,l为用于指示第l层中包括的第一系数是否非零的位图；
Figure PCTCN2021082539-appb-000158
指示第l层第g个分组第i个第一系数是否非零。
当
Figure PCTCN2021082539-appb-000159
指示第l层第g个分组第i个第一系数为0，
Figure PCTCN2021082539-appb-000160
指示第l层第g个分组第i个系数不执行幅度量化处理和相位量化处理，或者幅度相位联合量化；
当
Figure PCTCN2021082539-appb-000161
指示第l层第g个分组第i个第一系数为非零系数，
Figure PCTCN2021082539-appb-000162
指示第l层第g个分组第i个第一系数执行幅度量化处理和相位量化处理，或者幅度相位联合量化；
l为层的索引，N g,l为第l层第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
结合第二方面，在第二方面的一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000163
Figure PCTCN2021082539-appb-000164
其中，
Figure PCTCN2021082539-appb-000165
为第l层第g个分组中最强系数的幅度量化指示，
Figure PCTCN2021082539-appb-000166
为由
Figure PCTCN2021082539-appb-000167
确定的幅度量化值，f 1,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000168
与
Figure PCTCN2021082539-appb-000169
之间的映射规则；该映射规则可以由幅度量化表格或函数确定，此处不作限制。
第l层第g个分组第i个第一系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000170
Figure PCTCN2021082539-appb-000171
其中，
Figure PCTCN2021082539-appb-000172
为第l层第g个分组中第i个第一系数的幅度量化指示，
Figure PCTCN2021082539-appb-000173
为由
Figure PCTCN2021082539-appb-000174
确定的幅度量化值，f 2,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000175
与
Figure PCTCN2021082539-appb-000176
之间的映射规则。该映射规则可以由幅度量化表格或函数确定，此处不作限制。
结合第二方面，在第二方面的一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000177
B g,l为第l层第g个分组中最强系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000178
为对log 2B g,l的向上取整后的数值；
第l层第g个分组中第一系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000179
Q g,l为第 l层第g个分组中第一系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000180
为对log 2Q g,l的向上取整后的数值；
第l层第g个分组中第一系数进行相位量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000181
M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000182
为对log 2M g,l的向上取整后的数值。
结合第二方面，在第二方面的一种可能的实现方式中，量化规则包括：
第l层第g个分组第i个第一系数进行相位量化处理后得到的相位量化值为φ l,i,g；
其中，
Figure PCTCN2021082539-appb-000183
c l，i，g∈{0，...，M g，l-1}，f 3，l，g(c l，i，g)为第l层第g个分组中c l,i,g对应的量化相位，f 3,l.g表示第l层第g个分组中φ l,i,g的相位与c l,i,g之间的映射规则；该映射规则可以由相位量化表格或函数确定，此处不作限制。
l为层的索引，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
结合第二方面，在第二方面的一种可能的实现方式中，量化规则包括：
当相位量化处理采取均匀量化，则
Figure PCTCN2021082539-appb-000184
结合第二方面，在第二方面的一种可能的实现方式中，不反馈最强系数的量化指示信息，对最强系数进行归一化处理，反馈最强系数的位置信息(索引)。具体的反馈规则，包括：
Figure PCTCN2021082539-appb-000185
且
Figure PCTCN2021082539-appb-000186
通信装置不向网络装置发送
Figure PCTCN2021082539-appb-000187
和
Figure PCTCN2021082539-appb-000188
其中，
Figure PCTCN2021082539-appb-000189
为第l层最强系数所在分组的索引，第l层的最强系数在分组g *中的索引为
Figure PCTCN2021082539-appb-000190
通信装置向网络装置发送i 1,l。通过上述方法，在保证CSI反馈精度的前提下，节省了信令开销。
结合第二方面，在第二方面的一种可能的实现方式中，反馈规则，包括：
规则1)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000191
对应的量化指示信息
Figure PCTCN2021082539-appb-000192
规则2)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000193
且i,g同时满足
Figure PCTCN2021082539-appb-000194
且
Figure PCTCN2021082539-appb-000195
对应的第一系数的量化指示信息
Figure PCTCN2021082539-appb-000196
规则3)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000197
且i,g同时满足
Figure PCTCN2021082539-appb-000198
且
Figure PCTCN2021082539-appb-000199
对应的第一系数的量化指示信息c l,i,g；
规则4)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000200
其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000201
且
Figure PCTCN2021082539-appb-000202
规则5)、通信装置不发送剩余的不满足规则1)-3)的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0，
Figure PCTCN2021082539-appb-000203
且
Figure PCTCN2021082539-appb-000204
通过上述方法，在保证CSI反馈精度的前提下，节省了信令开销。
示例性的，令第l层中待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000205
其中，
Figure PCTCN2021082539-appb-000206
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；
其中，
Figure PCTCN2021082539-appb-000207
示例性的，K NZ小于或等于C*K 0，其中，K 0为通信装置与网络装置约定或协议预先定义的一个数值，用来控制反馈系数的个数，C为大于或等于1的整数。
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000208
规则1)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000209
对应的量化指示信息
Figure PCTCN2021082539-appb-000210
规则2)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000211
且i,g同时满足
Figure PCTCN2021082539-appb-000212
和
Figure PCTCN2021082539-appb-000213
的第一系数对应的K NZ-υ个量化指示信息
Figure PCTCN2021082539-appb-000214
通信装置向网络装置发送的量化指示信息
Figure PCTCN2021082539-appb-000215
数目为K NZ-υ，原因是每一层的最强系数的位置信息已反馈，因此无需反馈每一层的最强系数对应的量化指示信息；
规则3)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000216
且i,g同时满足
Figure PCTCN2021082539-appb-000217
和
Figure PCTCN2021082539-appb-000218
的第一系数对应的K NZ-υ个量化指示信息c l,i,g。通信装置向网络装置发送的量化指示信息c l,i,g数目为K NZ-υ，原因是每一层的最强系数的位置信息已反馈，因此无需反馈每一层的最强系数对应的量化指示信息；
规则4)、通信装置不发送剩余的P-K NZ个第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000219
其中，剩余的P-K NZ个第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的P-K NZ个第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000220
且
Figure PCTCN2021082539-appb-000221
规则5)、通信装置不发送剩余的P-K NZ个第一系数的相位量化指示c l,i,g，其中，剩余的P-K NZ个第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的P-K NZ个第一系数的量化相位满足f 3,l,g(c l,i,g)＝0，
Figure PCTCN2021082539-appb-000222
且
Figure PCTCN2021082539-appb-000223
结合第二方面，在第二方面的一种可能的实现方式中，反馈最强系数的量化指示信息，不反馈最强系数的位置信息(索引)。具体的反馈规则，包括以下一项或多项：
通信装置不向网络装置发送i 1,l。
规则6)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000224
规则7)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000225
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000226
规则8)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000227
的第一系数对应的量化指示信息c l,i,g；
规则9)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000228
其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000229
规则10)、通信装置不发送剩余的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
通过上述方法，进一步提升CSI的反馈精度。
示例性的，令第l层中CSI-RS端口对应的待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000230
其中，
Figure PCTCN2021082539-appb-000231
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；其中，
Figure PCTCN2021082539-appb-000232
示例性的，K NZ小于或等于C*K 0，其中，K 0为通信装置与网络装置约定或协议预先定义的一个数值，用来控制反馈系数的个数，C为大于或等于1的整数。
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000233
规则6)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000234
规则7)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000235
的第一系数对应的K NZ个量化指示信息
Figure PCTCN2021082539-appb-000236
规则8)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000237
的第一系数对应的K NZ个量化指示信息c l,i,g；
规则9)、通信装置不发送剩余的P-K NZ个第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000238
其中，剩余的P-K NZ个第一系数为不满足规则6)、7)和8)的第一系数，剩余的P-K NZ个第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000239
规则10)、通信装置不发送剩余的P-K NZ个第一系数的相位量化指示c l,i,g，其中，剩余的P-K NZ个第一系数为不满足规则6)、7)和8)的第一系数，剩余的P-K NZ个第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
结合第二方面，在第二方面的一种可能的实现方式中，量化指示信息包括：
i 3,1,l，i 3,1,l为第l层中各个分组的最强系数的幅度相位联合量化指示，其中，
Figure PCTCN2021082539-appb-000240
为第l层第g个分组中最强系数的幅度相位联合量化指示；
Figure PCTCN2021082539-appb-000241
i∈{0,…,N g,l-1}；
i 3,2,l，i 3,2,l为第l层中各个分组的第一系数的幅度相位联合量化指示，其中，
Figure PCTCN2021082539-appb-000242
为第l层第g个分组中第一系数的幅度相位联合量化指示；
Figure PCTCN2021082539-appb-000243
为第l层第g个分组中第一系数的幅度相位联合量化指示；
Figure PCTCN2021082539-appb-000244
其中，l为层的索引，N g,l为第l层第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，A g,l为第g个分组中最强系数进行幅度相位联合量化处理后有限取值的数目，L g,l为第g个分组中第一系数进行幅度相位联合量化处理后有限取值的数目，l为大于或等于0的整数，N g为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，A g,l为大于或等于1的整数，L g,l为大于或等于1的整数。
结合第二方面，在第二方面的一种可能的实现方式中，量化规则包括：
第l层第g个分组中最强系数进行幅度相位联合量化处理后得到的幅度相位联合量化值为
Figure PCTCN2021082539-appb-000245
Figure PCTCN2021082539-appb-000246
其中，
Figure PCTCN2021082539-appb-000247
为由
Figure PCTCN2021082539-appb-000248
确定的幅度相位联合量化值，f 4,l,g表示第g个分组中
Figure PCTCN2021082539-appb-000249
与
Figure PCTCN2021082539-appb-000250
之间的映射规则；
第l层第g个分组第i个第一系数进行幅度相位联合量化处理后得到的幅度相位联合量化值为
Figure PCTCN2021082539-appb-000251
Figure PCTCN2021082539-appb-000252
其中，
Figure PCTCN2021082539-appb-000253
为由
Figure PCTCN2021082539-appb-000254
确定的幅度相位联合量化值，f 5,l,g表示第g个分组中
Figure PCTCN2021082539-appb-000255
与
Figure PCTCN2021082539-appb-000256
之间的映射规则。
结合第二方面，在第二方面的一种可能的实现方式中，不反馈最强系数的量化指示信息，对最强系数进行归一化处理，反馈最强系数的位置信息(索引)。具体的反馈规则，包括：
Figure PCTCN2021082539-appb-000257
通信装置不向网络装置发送
Figure PCTCN2021082539-appb-000258
和
Figure PCTCN2021082539-appb-000259
其中，
Figure PCTCN2021082539-appb-000260
为第l层最强系数所在分组的索引，第l层的最强系数在分组g *中的索引为
Figure PCTCN2021082539-appb-000261
通信装置向网络装置发送i 1,l。通过上述方法，在保证CSI反馈精度的前提下，节省了信令开销。
结合第二方面，在第二方面的一种可能的实现方式中，具体的反馈规则，包括以下一项或多项：
规则11)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000262
对应的量化指示信息
Figure PCTCN2021082539-appb-000263
规则12)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000264
且i,g同时满足
Figure PCTCN2021082539-appb-000265
和
Figure PCTCN2021082539-appb-000266
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000267
规则13)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000268
其中，剩余的第一系数为不满足规则11)-12)的第一系数且不为最强系数，剩余的第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000269
且
Figure PCTCN2021082539-appb-000270
示例性的，令第l层中CSI-RS端口对应的待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000271
其中，
Figure PCTCN2021082539-appb-000272
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；
其中，
Figure PCTCN2021082539-appb-000273
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000274
规则11)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000275
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000276
规则12)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000277
且i,g同时满足
Figure PCTCN2021082539-appb-000278
和
Figure PCTCN2021082539-appb-000279
的第一系数对应的K NZ-υ个量化指示信息
Figure PCTCN2021082539-appb-000280
通信装置向网络装置发送的量化指示信息
Figure PCTCN2021082539-appb-000281
数目为K NZ-υ，原因是每一层的最强系数的位置信息已反馈，因此无需反馈每一层的最强系数对应的量化指示信息；
规则13)、通信装置不发送剩余的P-K NZ个第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000282
其中，剩余的P-K NZ个第一系数为不满足规则11)-12)的第一系数且不为最强系数，剩余的P-K NZ个第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000283
且
Figure PCTCN2021082539-appb-000284
通过上述方法，在保证CSI反馈精度的前提下，节省了信令开销。
结合第二方面，在第二方面的一种可能的实现方式中，反馈最强系数的量化指示信息，不反馈最强系数的位置信息(索引)。具体的反馈规则，包括以下一项或多项：
通信装置不向网络装置发送i 1,l；
规则14)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000285
规则15)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000286
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000287
规则16)、通信装置不发送剩余的第一系数的幅度相位联合量化指示
Figure PCTCN2021082539-appb-000288
其中，剩余的第一系数为不满足规则14)和15)的第一系数，剩余的第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000289
通过上述方法，进一步提升了CSI的反馈精度。
示例性的，令第l层中CSI-RS端口对应的待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000290
其中，
Figure PCTCN2021082539-appb-000291
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；其中，
Figure PCTCN2021082539-appb-000292
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000293
规则14)、通信装置向网络装置发送第一系数的量化指示信息
Figure PCTCN2021082539-appb-000294
规则15)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000295
的第一系数对应的K NZ个量化指示信息
Figure PCTCN2021082539-appb-000296
规则16)、通信装置不发送剩余的P-K NZ个第一系数的幅度相位联合量化指示
Figure PCTCN2021082539-appb-000297
其中，剩余的P-K NZ个第一系数为不满足规则14)和15)的第一系数，剩余的P-K NZ个第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000298
结合第二方面，在第二方面的一种可能的实现方式中，量化规则适用的码本为：
Figure PCTCN2021082539-appb-000299
其中，W 1为自由选择矩阵，W 1的一种特殊配置为单位矩阵。W 1也称为端口选择矩阵，以便从P个CSI-RS端口中自由选择K 1个端口，或者从P/2个CSI-RS端口中自由选择K 1/2个端口。需要说明的是，P为正整数，P/2为正整数，K 1为正整数，P是用于端口选择的CSI-RS端口的数量。
W 2为P个CSI-RS端口对应的叠加系数，叠加系数为P个CSI-RS端口的非零系数根据量化规则进行量化处理得到的量化值。
Figure PCTCN2021082539-appb-000300
为DFT的压缩矩阵，其中，N 3＝N CQISubband*R，并且M v>＝1。R定义为每个CQI子带包含的预编码矩阵(Precoding Matrix Indicator，PMI)子带个数。网络装置可以禁用
Figure PCTCN2021082539-appb-000301
禁用时，
Figure PCTCN2021082539-appb-000302
为全1向量(all-one vector)。
结合第二方面，在第二方面的一种可能的实现方式中，量化规则适用的码本为：W＝W 1W 2；
其中，W 1为端口选择矩阵，W 2为P个CSI-RS端口对应的叠加系数，叠加系数为P个CSI-RS端口的非零系数根据量化规则进行量化处理得到的量化值。W 1还可以是离散傅里叶变换DFT的压缩矩阵，或者其它空域压缩矩阵，例如：W 1为空频联合压缩矩阵，此处不作限制。
第三方面，本申请实施例提出一种通信装置，包括：
处理模块，用于基于Z个量化规则对G个分组中第一系数进行量化处理得到量化指示信息，所述第一系数为信道状态信息-参考信号(channel state information-reference signal，CSI-RS)端口(port)对应的系数，其中，Z个量化规则为G个分组中所述第一系数对应的量化规则，G为大于1的整数，Z为小于或等于G的正整数；每个分组包括一个或多个第一系数，每个CSI-RS端口对应一个或多个第一系数；
每个分组使用一个量化规则进行量化处理，得到量化指示信息；
处理模块，还用于基于量化指示信息和反馈规则，确定量化反馈信息。
在一种实现方式中，该通信装置为终端设备，所述处理模块可以是处理器。可选的，所述通信装置还可以包括收发器。
在另一种实现方式中，该通信装置为配置于终端设备中的芯片、芯片系统或电路。所述处理模块可以是处理器、处理电路或逻辑电路等。可选的，所述通信装置还可以包括收 发模块，所述收发模块可以是该芯片、芯片系统或电路上的输入和/或输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。
在一种可能的实现方式中，G个分组为全局的第一系数基于分组规则进行分组得到。
在一种可能的实现方式中，收发模块，用于网络装置发送量化反馈信息。
在一种可能的实现方式中，收发模块，还用于接收来自网络装置的指示信息，指示信息用于指示通信装置使用的量化规则、反馈规则和/或分组规则。
在一种可能的实现方式中，分组规则包括：
G个分组基于CSI-RS端口的索引进行划分，不同的分组中CSI-RS端口的索引不一致；
或者，
G个分组基于CSI-RS端口对应的图样进行划分，不同的分组中CSI-RS端口对应的图样不一致；
或者，
G个分组基于CSI-RS资源进行划分，其中，一个CSI-RS资源对应多个CSI-RS端口，不同的CSI-RS资源包括端口数相同或不同，不同的分组中CSI-RS端口对应的CSI-RS资源不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或梳分索引进行划分，其中，梳分索引用于标识每个CSI-RS端口中一个或多个第一系数，不同的分组中CSI-RS端口的索引和/或梳分索引不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或，时延分量索引进行划分，其中，时延分量索引用于标识每个CSI-RS端口中第一系数所在的时延位置，不同的分组中CSI-RS端口的索引和/或时延分量索引不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或，频域分量索引进行划分，其中，频域分量索引用于标识每个CSI-RS端口中第一系数对应的频域基底，不同的分组中CSI-RS端口的索引和/或频域分量索引不一致。
在一种可能的实现方式中，量化处理包括：幅度量化处理，相位量化处理，和/或幅度相位联合量化处理。
在一种可能的实现方式中，量化指示信息包括：
i 2,1,l，i 2,1,l为第l层中各个分组的最强系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000303
为第l层第g个分组中最强系数的幅度量化指示；
Figure PCTCN2021082539-appb-000304
i 2,2,l，i 2,2,l为第l层中各个分组的第一系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000305
为第l层第g个分组中第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000306
为第l层第g个分组中第i个第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000307
i∈{0,…,N g,l-1}；
其中，l为层的索引，N g,l为第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，B g,l为第g个分组中最强系数进行幅度量化处理后有限取值的数目，Q g,l为第g个分组中第一系数进行幅度量化处理后有限取值的数目，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，B g,l为大于或等于1的整数，Q g,l为大于或等于1的整数。
在一种可能的实现方式中，量化指示信息包括：
i 2,3,l，i 2,3,l为第l层中各个分组的第一系数的相位量化指示，其中，i 2,3,l＝[c l,0…c l,g…c l,G-1]，c l,g为第g个分组中第一系数的相位量化指示；
c l,g＝[c l,0,g…c l,i,g…c l,Ng-1,g]，c l,i,g为第l层第g个分组第i个第一系数的相位量化指示，i∈{0,…,N g,l-1}，c l,i,g∈{0,…，M g,l-1}，M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，N g,l为第l层第g个分组中第一系数的数量，g为大于或等于0的整数，g小于或等于G-1，l为大于或等于1的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化指示信息包括：
i 1,l，i 1,l为第l层的最强系数对应的索引，其中，i 1,l∈{0,1,…,P l-1}，l＝1,…,υ；
υ为最大层数，υ为大于或等于1的整数，P l为第l层中第一系数的总数，P l为大于或等于1的整数，l为大于或等于1的整数。
在一种可能的实现方式中，量化指示信息包括：
Figure PCTCN2021082539-appb-000308
其中，i 1,2,l为用于指示第l层中包括的第一系数是否非零的位图；
Figure PCTCN2021082539-appb-000309
指示第l层第g个分组第i个第一系数是否非零；
l为层的索引，N g,l为第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000310
Figure PCTCN2021082539-appb-000311
其中
Figure PCTCN2021082539-appb-000312
为第l层第g个分组中最强系数的幅度量化指示，
Figure PCTCN2021082539-appb-000313
为由
Figure PCTCN2021082539-appb-000314
确定的幅度量化值，f 1,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000315
与
Figure PCTCN2021082539-appb-000316
之间的映射规则；
第l层第g个分组第i个第一系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000317
Figure PCTCN2021082539-appb-000318
其中，
Figure PCTCN2021082539-appb-000319
为第l层第g个分组中第i个第一系数的幅度量化指示，
Figure PCTCN2021082539-appb-000320
为由
Figure PCTCN2021082539-appb-000321
确定的幅度量化值，f 2,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000322
与
Figure PCTCN2021082539-appb-000323
之间的映射规则。
在一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000324
B g,l为第l层第g个分组中最强系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000325
为对log 2B g,l的向上取整后的数值；
第l层第g个分组中第一系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000326
Q g,l为第l层第g个分组中第一系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000327
为对log 2Q g,l的向上取整后的数值；
第l层第g个分组中第一系数进行相位量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000328
M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000329
为对log 2M g,l的向上取整后的数值。
在一种可能的实现方式中，量化规则包括：
第l层第g个分组第i个第一系数进行相位量化处理后得到的相位量化值为φ l,i,g；
其中，
Figure PCTCN2021082539-appb-000330
c l，i，g∈{0，...，M g，l-1}，f 3，l，g(c l，i，g)为第l层第g个分组中c l,i,g对应的量化相位，f 3,l.g表示第l层第g个分组中φ l,i,g的相位与c l,i,g之间的映射规则；
l为层的索引，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化规则包括：
当相位量化处理采取均匀量化，则
Figure PCTCN2021082539-appb-000331
在一种可能的实现方式中，反馈规则，包括：
Figure PCTCN2021082539-appb-000332
且
Figure PCTCN2021082539-appb-000333
通信装置不向网络装置发送
Figure PCTCN2021082539-appb-000334
和
Figure PCTCN2021082539-appb-000335
其中，
Figure PCTCN2021082539-appb-000336
为第l层最强系数所在分组的索引，第l层的最强系数在分组g *中的索引为
Figure PCTCN2021082539-appb-000337
通信装置向网络装置发送i 1,l。
在一种可能的实现方式中，反馈规则，包括：
规则1)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000338
对应的量化指示信息
Figure PCTCN2021082539-appb-000339
规则2)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000340
且i,g同时满足
Figure PCTCN2021082539-appb-000341
且
Figure PCTCN2021082539-appb-000342
对应的第一系数的量化指示信息
Figure PCTCN2021082539-appb-000343
规则3)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000344
且i,g同时满足
Figure PCTCN2021082539-appb-000345
且
Figure PCTCN2021082539-appb-000346
对应的第一系数的量化指示信息c l,i,g；
规则4)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000347
其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000348
且
Figure PCTCN2021082539-appb-000349
规则5)、通信装置不发送剩余的不满足规则1)-3)的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0，
Figure PCTCN2021082539-appb-000350
且
Figure PCTCN2021082539-appb-000351
在一种可能的实现方式中，反馈规则，包括：
通信装置不向网络装置发送i 1,l。
在一种可能的实现方式中，反馈规则，包括：
规则6)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000352
规则7)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000353
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000354
规则8)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000355
的第一系数对应的量化指示信息c l,i,g；
规则9)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000356
其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000357
规则10)、通信装置不发送剩余的第一系数的相位量化指示c l,i,g，其中，剩余的第一系 数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
第四方面，本申请实施例提出一种网络装置网络装置，包括：
收发模块，用于接收量化反馈信息；
量化反馈信息为通信装置基于反馈规则和量化指示信息得到，量化指示信息为通信装置基于Z个量化规则对G个分组中第一系数进行量化处理得到，所述第一系数为信道状态信息-参考信号(channel state information-reference signal，CSI-RS)端口(port)对应的系数；G个分组为全局的第一系数基于分组规则进行分组得到；其中，Z个量化规则为G个分组中所述第一系数对应的量化规则，G为大于1的整数，Z为小于或等于G的正整数；每个分组包括一个或多个第一系数，每个CSI-RS端口对应一个或多个第一系数；
每个分组使用一个量化规则进行量化处理，得到量化指示信息；
处理模块，用于基于量化指示信息构建下行信道。
在一种实现方式中，该网络装置为网络装置，所述处理模块可以是处理器，所述收发模块可以是收发器。
在另一种实现方式中，该网络装置为配置于网络装置中的芯片、芯片系统或电路。所述处理模块可以是处理器、处理电路或逻辑电路等。所述收发模块可以是该芯片、芯片系统或电路上的输入和/或输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。可选的，上述“接收”还可以理解为“输入”。
在一种可能的实现方式中，收发模块，还用于向通信装置发送指示信息，指示信息用于指示通信装置使用的量化规则、反馈规则和/或分组规则。
在一种可能的实现方式中，分组规则包括：
G个分组基于CSI-RS端口的索引进行划分，不同的分组中CSI-RS端口的索引不一致；
或者，
G个分组基于CSI-RS端口对应的图样进行划分，不同的分组中CSI-RS端口对应的图样不一致；
或者，
G个分组基于CSI-RS资源进行划分，其中，一个CSI-RS资源对应多个CSI-RS端口，不同的CSI-RS资源包括端口数相同或不同，不同的分组中CSI-RS端口对应的CSI-RS资源不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或梳分索引进行划分，其中，梳分索引用于标识每个CSI-RS端口中一个或多个第一系数，不同的分组中CSI-RS端口的索引和/或梳分索引不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或，时延分量索引进行划分，其中，时延分量索引用于标识每个CSI-RS端口中第一系数所在的时延位置，不同的分组中CSI-RS端口的索引和/或时延分量索引不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或，频域分量索引进行划分，其中，频域分量索引用于标识每个CSI-RS端口中第一系数对应的频域基底，不同的分组中CSI-RS端口的索引和/或频域分量索引不一致。
在一种可能的实现方式中，量化处理包括：幅度量化处理，相位量化处理，和/或幅度 相位联合量化处理。
在一种可能的实现方式中，量化指示信息包括：
i 2,1,l，i 2,1,l为第l层中各个分组的最强系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000358
为第l层第g个分组中最强系数的幅度量化指示；
Figure PCTCN2021082539-appb-000359
i 2,2,l，i 2,2,l为第l层中各个分组的第一系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000360
为第l层第g个分组中第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000361
为第l层第g个分组中第i个第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000362
i∈{0,…,N g,l-1}；
其中，l为层的索引，N g,l为第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，B g,l为第g个分组中最强系数进行幅度量化处理后有限取值的数目，Q g,l为第g个分组中第一系数进行幅度量化处理后有限取值的数目，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，B g,l为大于或等于1的整数，Q g,l为大于或等于1的整数。
在一种可能的实现方式中，量化指示信息包括：
i 2,3,l，i 2,3,l为第l层中各个分组的第一系数的相位量化指示，其中，i 2,3,l＝[c l,0…c l,g…c l,G-1]，c l,g为第g个分组中第一系数的相位量化指示；
c l,g＝[c l,0,g…c l,i,g…c l,Ng-1,g]，c l,i,g为第l层第g个分组第i个第一系数的相位量化指示，i∈{0,…,N g,l-1}，c l,i,g∈{0,…，M g,l-1}，M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，N g,l为第l层第g个分组中第一系数的数量，g为大于或等于0的整数，g小于或等于G-1，l为大于或等于1的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化指示信息包括：
i 1,l，i 1,l为第l层的最强系数对应的索引，其中，i 1,l∈{0,1,…,P l-1}，l＝1,…,υ；
υ为最大层数，υ为大于或等于1的整数，P l为第l层中第一系数的总数，P l为大于或等于1的整数，l为大于或等于1的整数。
在一种可能的实现方式中，量化指示信息包括：
Figure PCTCN2021082539-appb-000363
其中，i 1,2,l为用于指示第l层中包括的第一系数是否非零的位图；
Figure PCTCN2021082539-appb-000364
指示第l层第g个分组第i个第一系数是否非零；
l为层的索引，N g,l为第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000365
Figure PCTCN2021082539-appb-000366
其中，
Figure PCTCN2021082539-appb-000367
为第l层第g个分组中最强系数的幅度量化指示，
Figure PCTCN2021082539-appb-000368
为由
Figure PCTCN2021082539-appb-000369
确定的幅度量化值，f 1,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000370
与
Figure PCTCN2021082539-appb-000371
之间的映射规则；
第l层第g个分组第i个第一系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000372
Figure PCTCN2021082539-appb-000373
其中，
Figure PCTCN2021082539-appb-000374
为第l层第g个分组中第i个第一系数的幅度量化指示，
Figure PCTCN2021082539-appb-000375
为由
Figure PCTCN2021082539-appb-000376
确定的幅度量化值，f 2,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000377
与
Figure PCTCN2021082539-appb-000378
之间的映射规则。
在一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000379
B g,l为第l层第g个分组中最强系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000380
为对log 2B g,l的向上取整后的数值；
第l层第g个分组中第一系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000381
Q g,l为第l层第g个分组中第一系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000382
为对log 2Q g,l的向上取整后的数值；
第l层第g个分组中第一系数进行相位量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000383
M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000384
为对log 2M g,l的向上取整后的数值。
在一种可能的实现方式中，量化规则包括：
第l层第g个分组第i个第一系数进行相位量化处理后得到的相位量化值为φ l,i,g；
其中，
Figure PCTCN2021082539-appb-000385
c l，i，g∈{0，...，M g，l-1}，f 3，l，g(c l，i，g)为第l层第g个分组中c l,i,g对应的量化相位，f 3,l.g表示第l层第g个分组中φ l,i,g的相位与c l,i,g之间的映射规则；
l为层的索引，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化规则包括：
当相位量化处理采取均匀量化，则
Figure PCTCN2021082539-appb-000386
在一种可能的实现方式中，反馈规则，包括：
Figure PCTCN2021082539-appb-000387
且
Figure PCTCN2021082539-appb-000388
通信装置不向网络装置发送
Figure PCTCN2021082539-appb-000389
和
Figure PCTCN2021082539-appb-000390
其中，
Figure PCTCN2021082539-appb-000391
为第l层最强系数所在分组的索引，第l层的最强系数在分组g *中的索引为
Figure PCTCN2021082539-appb-000392
通信装置向网络装置发送i 1,l。
在一种可能的实现方式中，反馈规则，包括：
规则1)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000393
对应的量化指示信息
Figure PCTCN2021082539-appb-000394
规则2)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000395
且i,g同时满足
Figure PCTCN2021082539-appb-000396
且
Figure PCTCN2021082539-appb-000397
对应的第一系数的量化指示信息
Figure PCTCN2021082539-appb-000398
规则3)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000399
且i,g同时满足
Figure PCTCN2021082539-appb-000400
且
Figure PCTCN2021082539-appb-000401
对应的第一系数的量化指示信息c l,i,g；
规则4)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000402
其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000403
且
Figure PCTCN2021082539-appb-000404
规则5)、通信装置不发送剩余的不满足规则1)-3)的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0，
Figure PCTCN2021082539-appb-000405
且
Figure PCTCN2021082539-appb-000406
在一种可能的实现方式中，反馈规则，包括：
通信装置不向网络装置发送i 1,l。
在一种可能的实现方式中，反馈规则，包括：
规则6)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000407
规则7)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000408
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000409
规则8)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000410
的第一系数对应的量化指示信息c l,i,g；
规则9)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000411
其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000412
规则10)、通信装置不发送剩余的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
第五方面，提供了一种通信装置用于实现上述各种方法。该通信装置可以为上述第一方面至第二方面中的通信装置或网络装置，或者包含上述网络装置或上述通信装置的装置，或者是上述网络装置或上述通信装置中包含的装置，比如系统芯片。该第五方面提供的通信装置包括实现上述方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
第六方面，提供了一种通信装置，包括：处理器和存储器；该存储器用于存储计算机指令，当该处理器执行该指令时，以使该通信装置执行上述任一方面的方法。该通信装置可以为上述第一方面至第二方面中的通信装置或网络装置，或者包含上述网络装置或上述通信装置的装置，或者是上述网络装置或上述通信装置中包含的装置，比如系统芯片。
第七方面，提供了一种通信装置，包括：处理器；处理器用于与存储器耦合，并读取存储器中的指令之后，根据指令执行如上述任一方面的方法，该存储器与该通信装置相互独立。该通信装置可以为上述第一方面至第二方面中的通信装置或网络装置，或者包含上述网络装置或上述通信装置的装置，或者是上述网络装置或上述通信装置中包含的装置，比如系统芯片。
第八方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当指令在通信装置上运行时，使得通信装置可以执行上述任一方面的方法。该通信装置可以为上述第一方面至第二方面中的通信装置或网络装置，或者包含上述网络装置或上述通信装置的装置，或者是上述网络装置或上述通信装置中包含的装置，比如系统芯片。
第九方面，提供了一种包含指令的计算机程序产品，当指令在通信装置上运行时，使得通信装置可以执行上述任一方面的方法。该通信装置可以为上述第一方面至第二方面中的通信装置或网络装置，或者包含上述网络装置或上述通信装置的装置，或者是上述网络装置或上述通信装置中包含的装置，比如系统芯片。
第十方面，提供了一种通信装置(例如，该通信装置可以是芯片或芯片系统)，该通信装置包括处理器，用于实现上述任一方面中所涉及的功能。在一种可能的设计中，该通信装置还包括存储器，该存储器，用于保存必要的程序指令和数据。该通信装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件。
第十一方面，提供了一种芯片，该芯片包括处理器和通信接口，该通信接口用于与所示芯片之外的模块通信，该处理器用于运行计算机程序或指令，使得安装该芯片的装置可以执行上述任一方面的方法。
其中，第三方面至第十一方面中任一种设计方式所带来的技术效果可参见上述第一方面或第二方面中不同设计方式所带来的技术效果，此处不再赘述。
第十二方面，提供一种通信系统，该通信系统包括上述方面的通信装置，和/或，网络装置。
附图说明
图1a为本申请实施例提出的一种应用场景示意图；
图1b为本申请实施例提出的另一种应用场景示意图；
图2为本申请实施例中通信装置的硬件结构示意图；
图3a为R16码本的一种结构示意图；
图3b为R16码本的另一种结构示意图；
图4为R16码本的组合系数示意图；
图5为本申请实施例中一种信道反馈信息方法的实施例示意图；
图6为本申请实施例中一种分组示意图；
图7为本申请实施例中另一种分组示意图；
图8为本申请实施例中另一种分组示意图；
图9为本申请实施例中另一种分组示意图；
图10为本申请实施例中一种仿真实验结果示意图；
图11为本申请实施例中又一种仿真实验结果示意图；
图12为本申请实施例中一种通信装置的实施例示意图；
图13为本申请实施例中一种网络装置的实施例示意图。
具体实施方式
本申请的说明书和权利要求书及上述附图中的术语“第一”、第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，这仅仅是描述本申请的实施例中对相同属性的对象在描述时所采用的区分方式。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，以便包含一系列单元的过程、方法、系统、产品或设备不必限于那些单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它单元。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述。 在本申请的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，在本申请的描述中，“至少一项”是指一项或者多项，“多项”是指两项或两项以上。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(Long Term Evolution，LTE)系统，LTE频分双工(frequency division duplex，FDD)系统，LTE时分双工(time division duplex，TDD)，通用移动通信系统(universal mobile telecommunication system，UMTS)，全球互联微波接入(worldwide interoperability for microwave access，
WiMAX)通信系统，第五代(5th generation，5G)系统或NR以及未来的第六代通信系统等。
各种通信系统中由运营者运营的部分可称为运营商网络。运营商网络也可称为PLMN网络，是由政府或政府所批准的经营者，以为公众提供陆地移动通信业务为目的而建立和经营的网络，主要是移动网络运营商(mobile network operator，MNO)为用户提供移动宽带接入服务的公共网络。本申请实施例中所描述的运营商网络或PLMN网络，可以为符合第三代合作伙伴项目(3rd generation partnership project，3GPP)标准要求的网络，简称3GPP网络。通常3GPP网络由运营商来运营，包括但不限于第五代移动通信
(5th-generation，5G)网络(简称5G网络)，第四代移动通信(4th-generation，4G)网络(简称4G网络)或第三代移动通信技术(3rd-generation，3G)网络(简称3G网络)。还包括未来的6G网络。为了方便描述，本申请实施例中将以运营商网络(如移动网络运营商(mobile network operator，MNO)网络)为例进行说明。
为了便于理解本申请实施例，介绍本方案的一些应用场景。请参阅图1a，图1a为本申请实施例提出的一种应用场景示意图。在一种可选的实现方式中，本申请实施例涉及的发送端可以是网络装置，接收端可以是终端设备。在另一种可选的实现方式中，本申请实施例涉及的发送端可以是终端设备，接收端可以是网络装置。
请参阅图1b，图1b为本申请实施例提出的另一种应用场景示意图。在另一种可选的实现方式中，本申请实施例涉及的发送端可以是终端设备，接收端可以是与该发送端建立通信连接的另一终端设备。
本申请实施例中涉及的通信装置的一种实现方式为终端设备，该终端设备也可以称为用户设备(user equipment，UE)。本申请实施例中所涉及的终端设备作为一种具有无线收发功能的设备，可以经网络装置中的接入网设备与一个或多个核心网(core network，CN)进行通信。终端设备也可称为接入终端、终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、无线网络装置、用户代理或用户装置等。终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。终端设备可以是蜂窝电话(cellular phone)、无绳电话、会话启动协议(session initiation protocol，SIP)电话、智能电话(smart phone)、 手机(mobile phone)、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)，可以是具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它设备、车载设备、可穿戴设备、无人机设备或物联网、车联网中的终端、第五代移动通信(fifth generation，5G)网络以及未来网络中的任意形态的终端、中继用户设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端等，其中，中继用户设备例如可以是5G家庭网关(residential gateway，RG)。例如终端设备可以是虚拟现实(virtual reality，VR)终端、增强现实(augmented reality，AR)终端、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。本申请实施例对此并不限定。
网络装置可以看作是运营商网络的子网络，是运营商网络中业务节点与终端设备之间的实施系统。终端设备要接入运营商网络，首先是经过网络装置，进而可通过网络装置与运营商网络的业务节点连接。本申请实施例中的网络装置，是一种为终端设备提供无线通信功能的设备，也可以称为(无线)接入网((radio)access network，(R)AN)。网络装置包括但不限于：5G系统中的下一代基站节点(next generation node base station，gNB)、长期演进(long term evolution，LTE)中的演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved nodeB，或home node B，HNB)、基带单元(base band unit，BBU)、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、小基站设备(pico)、移动交换中心，或者未来网络中的网络装置等。采用不同无线接入技术的系统中，具备接入网设备功能的设备的名称可能会有所不同。
本申请提供的一种信息反馈方法可以应用于各类通信系统中，例如，可以是物联网(internet of things，IoT)、窄带物联网(narrow band internet of things，NB-IoT)、长期演进(long term evolution，LTE)，也可以是第五代(5G)通信系统，还可以是LTE与5G混合架构、也可以是5G新无线(new radio，NR)系统以及未来通信发展中出现的新的通信系统等。本申请的5G通信系统可以包括非独立组网(non-standalone，NSA)的5G通信系统、独立组网(standalone，SA)的5G通信系统中的至少一种。通信系统还可以是公共陆地移动网络(public land mobile network，PLMN)网络、设备到设备(device-to-device，D2D)网络、机器到机器(machine to machine，M2M)网络或者其它网络。
此外，本申请实施例还可以适用于面向未来的其它通信技术，例如6G等。本申请描述的网络架构以及业务场景是为了更加清楚的说明本申请的技术方案，并不构成对本申请提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请提供的技术方案对于类似的技术问题，同样适用。
图2为本申请实施例中通信装置的硬件结构示意图。本申请实施例中网络装置的硬件结构与该通信装置类似，此处不作赘述。一种可能的实现方式中，该通信装置还可以是通 过芯片系统实现。如图2所示，通信装置至少包括处理器204，存储器203，和收发器202，存储器203进一步用于存储指令2031和数据2032。可选的，该通信装置还可以包括天线206，I/O(输入/输出，Input/Output)接口210和总线212。收发器202进一步包括发射器2021和接收器2022。此外，处理器204，收发器202，存储器203和I/O接口210通过总线212彼此通信连接，天线206与收发器202相连。
处理器204可以是通用处理器，例如但不限于，中央处理器(Central Processing Unit，CPU)，也可以是专用处理器，例如但不限于，数字信号处理器(Digital Signal Processor，DSP)，应用专用集成电路(Application Specific Integrated Circuit，ASIC)和现场可编程门阵列(Field Programmable Gate Array，FPGA)等。该处理器204还可以是神经网络处理单元(neural processing unit，NPU)。此外，处理器204还可以是多个处理器的组合。特别的，在本申请实施例提供的技术方案中，处理器204可以用于执行，后续方法实施例中基于一种信息反馈方法的相关步骤。处理器204可以是专门设计用于执行上述步骤和/或操作的处理器，也可以是通过读取并执行存储器203中存储的指令2031来执行上述步骤和/或操作的处理器，处理器204在执行上述步骤和/或操作的过程中可能需要用到数据2032。
收发器202包括发射器2021和接收器2022，在一种可选的实现方式中，发射器2021用于通过天线206发送信号。接收器2022用于通过天线206之中的至少一根天线接收信号。特别的，在本申请实施例提供的技术方案中，发射器2021具体可以用于通过天线206之中的至少一根天线执行，例如，后续方法实施例中基于一种信息反馈方法应用于网络装置或通信装置时，网络装置或通信装置中接收模块或发送模块所执行的操作。
在本申请实施例中，收发器202用于支持通信装置执行前述的接收功能和发送功能。将具有处理功能的处理器视为处理器204。接收器2022也可以称为输入端口、接收电路等，发射器2021可以称为发射端口或者发射电路等。
处理器204可用于执行该存储器203存储的指令，以控制收发器202接收消息和/或发送消息，完成本申请方法实施例中通信装置的功能。作为一种实现方式，收发器202的功能可以考虑通过收发电路或者收发的专用芯片实现。本申请实施例中，收发器202接收消息可以理解为收发器202输入消息，收发器202发送消息可以理解为收发器202输出消息。
存储器203可以是各种类型的存储介质，例如随机存取存储器(Random Access Memory，RAM)，只读存储器(Read Only Memory，ROM)，非易失性RAM(Non-Volatile RAM，NVRAM)，可编程ROM(Programmable ROM，PROM)，可擦除PROM(Erasable PROM，EPROM)，电可擦除PROM(Electrically Erasable PROM，EEPROM)，闪存，光存储器和寄存器等。存储器203具体用于存储指令2031和数据2032，处理器204可以通过读取并执行存储器203中存储的指令2031，来执行本申请方法实施例中的步骤和/或操作，在执行本申请方法实施例中操作和/或步骤的过程中可能需要用到数据2032。
可选的，该通信装置还可以包括I/O接口210，该I/O接口210用于接收来自外围设备的指令和/或数据，以及向外围设备输出指令和/或数据。
为便于理解本申请实施例，首先对本申请中涉及的几个术语做简单说明。
1、信道互易性：在时分双工(time division duplexing，TDD)模式下，上下行信道在相同的频域资源、不同的时域资源上传输信号。在相对较短的时间(如，信道传播的相干时间)之内，可以认为上、下行信道上的信号所经历的信道衰落是相同的。这就是上下行信道的互易性。基于上下行信道的互易性，网络装置可以根据上行参考信号，如探测参考信号(sounding reference signal，SRS)，测量上行信道。并可以根据上行信道来估计下行信道，从而可以确定用于下行传输的预编码矩阵等。
然而，在频分双工(frequency division duplexing，FDD)模式下，由于上下行信道的频带间隔远大于相干带宽，上下行信道不具有互易性，利用上行信道来确定用于下行传输的预编码矩阵可能并不能够与下行信道相适配。但是，FDD模式下的上下行信道仍然具有部分的互易性，例如，角度的互易性和时延的互易性。因此，角度和时延也可以称为互易性参数。
由于信号在经过无线信道传输时，从发射天线可以经过多个路径到达接收天线。多径时延扩展导致频率选择性衰落，就是频域信道的变化。时延是无线信号在不同传输路径上的传输时间，由距离和速度决定，与无线信号的频域没有关系。因此，时延在FDD模式下的上下行信道可以认为是相同的，或者说，互易的。
此外，角度可以是指信号经由无线信道到达接收天线的到达角(angle of arrival，AOA)，也可以是指通过发射天线发射信号的离开角(angle of departure，AOD)。在本申请实施例中，该角度可以是指上行信号到达网络装置的到达角，也可以是指网络装置发射下行信号的离开角。由于上下行信道在不同频率上的传输路径的互易，所以该上行参考信号的到达角和下行参考信号的离开角可以认为是互易的。
因此可以认为，时延和角度在FDD模式下的上下行信道具有互易性。在本申请实施例中，每个角度可以通过一个角度向量来表征。每个时延可通过一个时延向量来表征。因此，在本申请实施例中，一个角度向量可以表示一个角度，一个时延向量可以表示一个时延。
2、参考信号(reference signal，RS)：参考信号也可以称为导频(pilot)、参考序列等。在本申请实施例中，参考信号可以是用于信道测量的参考信号。例如，该参考信号可以是信道状态信息参考信号(channel state information reference signal，CSI-RS)、探测参考信号(sounding reference signal，SRS)等。应理解，上文列举的参考信号仅为示例，不应对本申请构成任何限定。本申请并不排除在未来的协议中定义其他参考信号以实现相同或相似功能的可能。
本申请实施例中的参考信号，可以称为下行参考信号，是网络装置基于信道互易性参数对参考信号进行预编码后得到的参考信号。预编码具体可以包括波束赋形(beamforming)和/或相位旋转。其中，波束赋形例如可以通过基于一个或多个角度向量对参考信号进行预编码来实现。相位旋转例如可以通过将一个或多个时延向量对参考信号进行预编码来实现。基于一个或多个角度向量对下行参考信号进行预编码，也可以称为，将一个或多个角度向量加载到下行参考信号上。基于一个或多个时延向量对下行参考信号进行预编码，也可以称为将一个或多个时延向量加载到下行参考信号上。
3、FDD下行信道重构(也可称为基于FDD部分互易性的CSI获取)：
FDD系统的基于CSI的下行信道重建方法包括以下步骤：
步骤一：网络装置接收终端设备发送的SRS，并利用上行SRS估计出上下行具有互易性的信息(例如，方向角、时延等)；
步骤二：网络装置向终端设备发送下行参考信号，具体地，网络装置将得到的上下行具有互易性的信息加载到下行参考信号上，通知终端设备测量并反馈网络装置需要获取的补充信息；
步骤三：终端设备利用下行参考信号重新估计并反馈补充信息(例如，可以是每个端口对应的全带复幅度)；
步骤四：网络装置利用所述步骤一和步骤三中获取的信息，重建下行信道。
4、发送端口(transmission port)：本申请中可以称为天线端口、下行参考信号的发送端口、参考信号的发送端口，也可以简称端口或Tx port。用于进行信号或数据的发送，被接收端设备所识别的发射天线，或者在空间上可以区分的发射天线。端口是一种逻辑上的含义，针对每个虚拟天线可以配置一个天线端口，每个虚拟天线可以为多个物理天线的加权组合，每个天线端口可以与一个参考信号端口对应。天线端口用于承载具体的物理信道和物理信号中至少一种。通过相同天线端口所发送的信号，无论这些信号是否是通过相同或不同的物理天线发送，他们在空间传输所经历的路径所对应的信道可视为相同或者相关(比如大尺度信道特性，如信道矩阵H，相同)。也就是说，在相同的天线端口所发送的信号，接收端在解调时可以认为其信道相同或者相关。
5、信道状态信息(channel state information，CSI)：可以包括以下至少一项信息：信道质量指示(channel quality indicator，CQI)，预编码矩阵指示(precoding matrix indicator，PMI)，CSI-RS资源指示(CSI-RS resource indicator)，同步信号块(SSB)资源指示(SS/PBCH block resource indicator，SSBRI)，层指示(layer indicator，LI)，秩指示(rank indicator，RI)，参考信号接收功率(reference signal received power，RSRP)。RSRP可以是层1的RSRP(L1-RSRP)。在本申请中，信道状态信息还可以包括同步测量结果或同步测量结果的指示信息。
6、码本。
NR系统中定义了类型II(Type II)码本。Rel-15中的Type II码本基于正交波束的线性合并，具有较高的信道量化精度，但反馈开销大。Rel-16中提出一种低开销的类型II码本(即增强的TypeⅡ码本结构)，其基于正交波束的线性合并和子带系数压缩的方法。
其中，NR Rel-15中定义的Type II码本，对于一个子带(subband),码本表示为：
Figure PCTCN2021082539-appb-000413
其中，L是正交波束的数目；
Figure PCTCN2021082539-appb-000414
是过采样的二维离散傅里叶变换(2D discrete fourier transform，2D DFT)波束，r＝0,1表示两个极化方向，k 1表示水平波束的索引，k 2表示垂直波束的索引，k 1和k 2共同决定了2D DFT波束；l＝0,1表示层(layer)；
Figure PCTCN2021082539-appb-000415
是第l层第i个波束第r个极化方向对应的宽带幅度；
Figure PCTCN2021082539-appb-000416
是第l层第i个波束第r个极化方向对应的窄带幅度；c r,l,i是第l层第i个波束第r个极化方向对应的相位。
以宽带幅度加窄带幅度的幅度量化为例，分别针对幅度量化和相位量化，阐述其量化准则：
宽带幅度
Figure PCTCN2021082539-appb-000417
量化采用的比特位宽为3比特(bits)，具体的量化表格为：
Figure PCTCN2021082539-appb-000418
子带幅度
Figure PCTCN2021082539-appb-000419
量化采用的比特位宽为1bit，具体的量化表格为
Figure PCTCN2021082539-appb-000420
针对相位量化，阐述其量化准则：
波束、极化，与层之间独立地对c r,l,i进行量化。每个子带均需要量化。其中，量化采用的比特位宽为2bits或者3bits(具体的比特位宽为可选配置)。具体的，对应的量化表格为
Figure PCTCN2021082539-appb-000421
综上，R15码本中采用非均匀量化，但是由于每个子带都需要反馈预编码矩阵索引(precoding matrix indicator，PMI)，因此，反馈开销较大。
NR Rel-16中定义了空域-频域双域压缩码本，在频域上对所有子带的PMI进行压缩，码本结构为：
Figure PCTCN2021082539-appb-000422
其中
Figure PCTCN2021082539-appb-000423
为端口选择矩阵，
Figure PCTCN2021082539-appb-000424
为组合系数矩阵，
Figure PCTCN2021082539-appb-000425
为频域基底矩阵，N 1、N 2分别为网络装置的水平和垂直天线端口数目，L为空域基底数目，M为频域基底数目。具体的，如图3a与图3b所示，图3a为R16码本的一种结构示意图，图3b为R16码本的另一种结构示意图。其中，N 1和N 2分别表示水平和垂直方向天线端口数目，N 3为频域子带个数，N 3的数值等于频域正交基的数目。
如图4所示，图4为R16码本的组合系数示意图。R16码本中W 2为量化后的组合系数(也称叠加系数)矩阵，假设未量化的组合系数为c l,m，以rank1码本为例，具体的量化规则如下：
信道状态信息参考信号端口(port)对应的系数中能量最大的系数称为最强系数(strongest coefficient)，也即“最强系数”是针对第一系数而言。首先，将全局的最强系数归一化至1，全局指的是所有的CSI-RS端口的端口系数。
其次，假设全局最强系数所在的极化状态为极化1，相对于该极化1的其它极化状态为极化2。则极化2中最强系数使用4比特位宽进行幅度量化(Amplitude quantization)，量化表格为：
Figure PCTCN2021082539-appb-000426
量化步长为-1.5分贝(dB)。
两个极化(极化1和极化2)分别对各自的最强系数进行3bits的差分幅度量化，得到量化结果p diff(V,m)，V为波束的索引，m为频域基底的索引，p diff(V,m)具体含义为：第V个波束第m个频域基底对应的量化系数为p diff(V,m)。具体的，量化表格为
Figure PCTCN2021082539-appb-000427
量化步长为-3dB。第V个波束第m个频域基底的幅度量化值p V,m＝p ref(V,m)×p diff(V,m)，其中，p ref(V,m)为第V个波束第m个频域基底对应的参考量化幅度。
针对相位量化，采用4比特位宽的量化。
综上，R16码本中，针对不同的非零系数，在一个极化上采用(幅度量化，相位量化)(3，4)比特位宽进行量化，具体的，指的是在一个极化上幅度量化采用3比特位宽，相位量化采用4比特位宽；在另一极化上针对最强系数(strongest coefficient)采用4比特位宽进行量化。因此，不能充分考虑不同信道的特性，不能充分利用反馈比特资源。
基于此，本申请实施例提出一种信息反馈方法，利用信道的互易性，确定量化规则。针对不同的第一系数可以采用不同的量化规则，以实现非均匀量化，第一系数为CSI-RS端口对应的系数。在较小反馈开销的前提下，提升CSI反馈的精度。
下面，结合附图对本申请实施例进行介绍。请参阅图5，图5为本申请实施例中一种信道反馈信息方法的实施例示意图。本申请实施例提出的一种信道反馈信息方法，包括：
501、通信装置向网络装置发送上行参考信号。
本实施例中，通信装置向网络装置发送上行参考信号，该上行参考信号可以是探测参考信号(sounding reference signal,SRS)，也可以是解调参考信号(demodulation reference signal，DMRS)，还可以是新定义的参考信号，此处不作限制。
需要说明的是，该参考信号还可以称为导频，本申请实施例中不作区分。
需要说明的是，步骤501为可选步骤。
502、网络装置基于来自通信装置的上行参考信号，确定量化规则、分组规则和反馈规则中的一项或多项中的一项或多项。
本实施例中，网络装置基于来自通信装置的上行参考信号，检测该上行参考信号对应的上行信道端口(port)的能量。由于上下行信道具有互易性，基于该上行信道端口的能量，估计信道状态信息-参考信号CSI-RS端口的能量(即能量振幅)。网络装置基于该CSI-RS端口的能量，确定该第一系数的量化规则、分组规则和反馈规则中的一项或多项。
可选的，本申请实施例中，当量化规则、分组规则或反馈规则包括一个或多个子规则时，量化规则、分组规则和反馈规则中的一项或多项，包括量化规则子规则、分组规则子规则和反馈规则子规则中的一项或多项。
本申请实施例中，第一系数也称为叠加系数，或组合系数，或角度时延对(angle-delay pair)对应的叠加系数等，此处不作限制。
需要说明的是，上述方法仅做示例说明，本申请实施例中并不对网络装置确定量化规则、分组规则和反馈规则中的一项或多项的方法进行限定。例如：网络装置还可以利用上行信道的其它信息确定量化规则、分组规则和反馈规则中的一项或多项。又或者，协议预先约定了量化规则、分组规则和反馈规则中的一项或多项，通信装置与网络装置使用预先约定的量化规则、分组规则和反馈规则中的一项或多项。
需要说明的是，本申请实施例中的量化规则指的是对第一系数如何进行量化的规则(或方法)；分组规则指的是对第一系数如何进行分组，或者分类的规则(或方法)；反馈规则指的是如何向网络装置上报量化反馈信息的规则(或方法)。本申请实施例中的量化规则、分组规则和反馈规则中的一项或多项仅是对上述规则(或方法)的一种概括说明。
关于分组规则、量化规则和反馈规则在后续实施例中进行详细说明。
网络装置基于来自通信装置的上行参考信号，可以确定量化规则、分组规则和反馈规则中的一项或多项，所述方法还包括：
503、网络装置向通信装置发送指示信息。
本实施例中，当网络装置确定量化规则、分组规则和反馈规则中的一项或多项后。网络装置向通信装置发送指示信息(indicator)，该指示信息用于指示通信装置使用对应的量 化规则、分组规则和反馈规则中的一项或多项。
具体的，网络装置可以通过多种方式向通信装置发送该指示信息，下面分别进行说明：
(1)、可选的，该指示信息包括量化规则、分组规则和反馈规则中的一项或多项。
示例性的，网络装置向通信装置发送的指示信息包括：量化规则A、分组规则A和反馈规则A。通信装置基于该指示信息中的分组规则A，对全局的第一系数进行分组处理。其次，通信装置基于该指示信息中的量化规则A对各个分组中第一系数进行量化处理得到量化指示信息。再次，通信装置基于该指示信息中的反馈规则A对量化指示信息进行处理，得到量化反馈信息。
(2)、可选的，该指示信息包括量化规则的索引(index)、分组规则的索引和反馈规则的索引中的一项或多项。
该指示信息可以是值为0或者1的指示信息，比如当值为1110时表示对应于分组规则A，当值为1111时表示对应于分组规则B。该指示信息也可以为字符串形式“quantization A”，或“quantization B”等通过具体含义指示对应的量化规则、分组规则和反馈规则中的一项或多项。
示例性的，各个规则的索引与各个规则之间的对应关系如表1a与表1b所示。
表1a
Figure PCTCN2021082539-appb-000428
表1b
Figure PCTCN2021082539-appb-000429
通信装置中预先配置量化规则、分组规则和反馈规则中的一项或多项。该预先配置可以是协议约定，也可以是通信装置初次接入该网络装置时由该网络装置配置，此处不作限制。通信装置接收该指示信息后，根据该指示信息中包括的索引，确定需要使用的量化规则、分组规则和反馈规则中的一项或多项。例如：当该指示信息中包括的索引为“grouping A”，则通信装置确定需要使用的分组规则为“分组规则A”。此时，该通信装置需要使用的量化规则和反馈规则为该“分组规则A”对应的“量化规则A”和“反馈规则A”。又例如：例如：当该指示信息中包括的索引为“grouping A”、“quantization B”和“feedback A”，则通信装置确定需要使用的分组规则为“分组规则A”，需要使用的量化规则为“量化规则B”，需要使用的反馈规则为“反馈规则A”。
需要说明的是，步骤503中的量化规则，指的是对多个分组进行量化处理时使用的Z个量化规则，其中，Z为大于或等于1的整数。例如，“量化规则A”包括：对“分组A”中第一系数进行量化处理的“量化规则a”，对“分组B”中第一系数进行量化处理的“量化规则b”，和对“分组C”中第一系数进行量化处理的“量化规则c”。步骤503中的反馈规则，指的是对多个分组对应的量化指示信息进行处理时使用的一个或多个反馈规则。例如，“反馈规则A”包括：对“分组A”对应的量化指示信息进行处理的“反馈规则a”，对“分组B”对应的量化指示信息进行处理的“反馈规则b”，和对“分组C”对应的量化指示信息进行处理的“反馈规则c”。
示例性的，网络装置可以通过以下信令或消息，向通信装置发送该指示信息，包括但不限于：调度下行控制信息(downlink control information，DCI),无线资源控制(radio resource control，RRC)信令，或媒体访问控制子层控制元素信令(media access control control element，MAC CE)。
需要说明的是，步骤501-503为可选步骤。在一种实现方案中，当协议预先约定网络装置与通信装置使用的量化规则、分组规则和反馈规则时，则不执行步骤501-503。例如：协议预先约定使用量化规则A、分组规则A和反馈规则A，则不执行步骤501-503。示例性的，分组规则A为将32个第一系数分为两组，其中，第一个分组包括CSI-RS端口1-16对应的系数，第二个分组包括CSI-RS端口17-32对应的系数。量化规则A包括针对第一个分组的幅度量化采用2比特位宽，相位量化采用4比特位宽；针对第二个分组的幅度量化采用3比特位宽，相位量化采用4比特位宽。反馈规则A包括不反馈最强系数的量化指示信息，对最强系数进行归一化处理，反馈最强系数的位置信息(索引)，反馈处最强系数外其余第一系数所对应的量化反馈信息。
在另一种实现方案中，网络装置由通信装置与该网络装置协商确定或由网络装置配置使用的量化规则、分组规则和反馈规则中的一项或多项。例如，当该通信装置初次接入该网络装置时，与该网络装置进行协商确定或由网络装置配置一项或多项规则，具体的，该网络装置可以通过步骤503中的方式通知该通信装置需要使用的量化规则、分组规则和反馈规则中的一项或多项，则不执行步骤501-502。
在另一种实现方案中，执行步骤501后执行步骤504，不执行步骤502-503。
504、通信装置基于Z个量化规则对G个分组中第一系数进行量化处理得到量化指示 信息。
本实施例中，通信装置首先基于分组规则确定G个分组，G为大于1的整数，每个分组包括一个或多个第一系数，每个CSI-RS端口对应一个或多个系数，该系数为第一系数。
具体的，G个分组为全局的第一系数基于分组规则进行分组得到。需要说明的是，该全局的第一系数可以是所有层的第一系数，也可以是某一层或多层的第一系数。示例性的，以该全局的第一系数为某一层第一系数为例，该某一层的第一系数分为G个分组。需要说明的是，该全局的第一系数还可以是所有层的第一系数，则该所有层的第一系数分为G个分组。或者，该所有层中每一层的第一系数都分为G个分组，此处不作限制。
在一种可能的实现方式中，量化规则适用的码本为：
Figure PCTCN2021082539-appb-000430
W 2＝K 1×Mv，
Figure PCTCN2021082539-appb-000431
其中，W 1为自由选择矩阵，W 1的一种特殊配置为单位矩阵。W 1也称为端口选择矩阵，以便从P个CSI-RS端口中自由选择K 1个端口，或者从P/2个CSI-RS端口中自由选择K 1/2个端口。需要说明的是，P为正整数，P/2为正整数，K 1为正整数，P是用于端口选择的CSI-RS端口的数量。
W 2为P个CSI-RS端口对应的叠加系数，叠加系数为P个CSI-RS端口的非零系数根据量化规则进行量化处理得到的量化值。
Figure PCTCN2021082539-appb-000432
为DFT的压缩矩阵，其中，N 3＝N CQISubband*R，并且M v>＝1。R定义为每个CQI子带包含的预编码矩阵(Precoding Matrix Indicator，PMI)子带个数。网络装置可以禁用
Figure PCTCN2021082539-appb-000433
禁用时，
Figure PCTCN2021082539-appb-000434
为全1向量(all-one vector)。
在一种可能的实现方式中，量化规则适用的码本为：
Figure PCTCN2021082539-appb-000435
Figure PCTCN2021082539-appb-000436
其中，
Figure PCTCN2021082539-appb-000437
为CSI-RS端口自由选择矩阵，也称为端口选择矩阵，以便从P个CSI-RS端口中自由选择K 1个端口，或者从P/2个CSI-RS端口中自由选择K 1/2个端口，W 1的一种特殊配置为单位矩阵。需要说明的是，P为正整数，P/2为正整数，K 1为正整数，P是用于端口选择的CSI-RS端口的数量，例如：可以取4、8、16、32等值；或者考虑终端计算复杂度等因素，与Mv的取值进行联合设计，比如P×Mv≤P 0，P 0为协议约束的一个整数值，或者协议进一步规定(P，Mv)可以配置的值，示例性的，以P 0＝32这个典型值为例，(P，Mv)的可选配置如表1c所示：
表1c
Figure PCTCN2021082539-appb-000438
Figure PCTCN2021082539-appb-000439
又一种示例中，以P 0＝64为例，(P，Mv)的可选配置如表1d所示：
表1d
Figure PCTCN2021082539-appb-000440
Figure PCTCN2021082539-appb-000441
为CSI-RS端口对应的叠加系数，叠加系数为P个CSI-RS端口的非零系数根据量化规则进行量化处理得到的量化值。
Figure PCTCN2021082539-appb-000442
为DFT矩阵或过采样DFT矩阵中的Mv(Mv>＝1)列构成的子矩阵，其中，N 3＝N CQISubband*R，N CQISubband为CQI子带数目。网络装置可以禁用
Figure PCTCN2021082539-appb-000443
禁用
Figure PCTCN2021082539-appb-000444
时，
Figure PCTCN2021082539-appb-000445
为全1向量(all-one vector)。R定义为每个CQI子带包含的预编码矩阵指示(Precoding Matrix Indicator，PMI)子带个数(即：numberOfPMI-SubbandsPerCQI-Subband)。当前R16协议版本中仅支持R＝1和R＝2，由于R17利用了FDD时延角度的互易性进行码本设计，可以支持更小的PMI频域颗粒度，即R可以取值更大，具体可以包括如下几种不同的设计方法和对应的取值：
(aa)、考虑网络侧进行CSI-RS预编码的频域颗粒度在UE侧不感知，即UE侧无需假设网络侧CSI-RS预编码频域颗粒度，此时网络侧可以进行频域子带、资源块(Resource Block，RB)或资源元素(Resource Element，RE)粒度的CSI-RS预编码，此处不做限制。R一种可能的取值是，R为满足
Figure PCTCN2021082539-appb-000446
的正整数，其中
Figure PCTCN2021082539-appb-000447
为每个子带包含的物理资源块(physical resource block，PRB)的数目。另一种可能的取值，R为满足
Figure PCTCN2021082539-appb-000448
的正整数，其中N RE为一个PRB上包含的RE的数目。
在一种示例中，R的取值可以是集合{1，2，4，8}的子集。
在又一种示例中，R的取值可以是集合{1，2，4，8，16}的子集。
(bb)、R除了numberOfPMI-SubbandsPerCQI-Subband定义外，也限制了网络侧进行CSI-RS预编码的频域颗粒度，即网络侧CSI-RS预编码频域颗粒度为
Figure PCTCN2021082539-appb-000449
此时网络侧在连续的
Figure PCTCN2021082539-appb-000450
个RB上采用相同的CSI-RS预编码，其中
Figure PCTCN2021082539-appb-000451
为每个子带包含的PRB的数目，并且显然R是一个正整数。与此对应的，终端侧在进行RI、PMI、CQI等测量时，假设网络侧在连续的
Figure PCTCN2021082539-appb-000452
个RB上采用相同的CSI-RS预编码。示例性的，针对
Figure PCTCN2021082539-appb-000453
R＝4的配置情况，表明网络装置进行
Figure PCTCN2021082539-appb-000454
粒度的CSI-RS预编码；针对
Figure PCTCN2021082539-appb-000455
R＝2的配置情况，表明网络装置进行
Figure PCTCN2021082539-appb-000456
RB粒度的CSI-RS预编码。由上文描述可知，R17协议可以对已有协议中已经支持的R＝1和R＝2两种情况进行扩展，支持到
Figure PCTCN2021082539-appb-000457
甚至更大的粒度。或者另一种可能的约束中，考虑终端侧可以进行多个RB的联合信道估计，限制
Figure PCTCN2021082539-appb-000458
R 0为协议约束的可支持的最小CSI-RS预编码频域粒度。示例性的，R 0＝2，此时R的取值必须满足
Figure PCTCN2021082539-appb-000459
当
Figure PCTCN2021082539-appb-000460
时R的取值可以是1、2；当
Figure PCTCN2021082539-appb-000461
时R的取值可以是1、2、4。
(cc)、考虑网络侧可能配置多个CSI-RS资源(CSI-RS resource)，每个CSI-RS resource用于测量部分叠加系数，此时终端需要联合多个CSI-RS resource进行秩指示(rank  indication，RI)、预编码矩阵指示(precoding matrix indicator，PMI)、和/或信道质量指示(channel quality indication，CQI)的测量。此时假设需要联合O1个CSI-RS resource进行联合测量，R的取值需要综合考虑R 0、O1的取值进行计算，并且此时R与O1联合决定了CSI-RS预编码的频域粒度，即网络侧CSI-RS预编码频域颗粒度为
Figure PCTCN2021082539-appb-000462
此时网络侧在连续的
Figure PCTCN2021082539-appb-000463
个RB上采用相同的CSI-RS预编码。R的一种可能取值为，
Figure PCTCN2021082539-appb-000464
示例性的，R 0＝2，O1＝2，此时R的取值必须满足
Figure PCTCN2021082539-appb-000465
当
Figure PCTCN2021082539-appb-000466
时R仅可取值1；当
Figure PCTCN2021082539-appb-000467
时R的取值可以是1、2。
(dd)、考虑网络侧可能配置一个或多个CSI-RS resource，其中，一个CSI-RS resource包括一个或多个图样(CSI-RS pattern)的CSI-RS，不同pattern的CSI-RS用于测量部分叠加系数。此时终端需要联合一个或多个CSI-RS resource进行RI、PMI、CQI的测量，其中，一个CSI-RS resource包括一个或多个不同pattern的CSI-RS，具体测量时终端联合部分或全部的CSI-RS。此时假设需要联合O2个CSI-RS pattern对应的CSI-RS进行联合测量，R的取值需要综合考虑R 0、O2的取值进行计算，并且此时R与O2联合决定了CSI-RS预编码的频域粒度，即网络侧CSI-RS预编码频域颗粒度为
Figure PCTCN2021082539-appb-000468
此时网络侧在连续的
Figure PCTCN2021082539-appb-000469
个RB上采用相同的CSI-RS预编码。R的一种可能取值为，
Figure PCTCN2021082539-appb-000470
示例性的，R 0＝2，O2＝2，此时R的取值必须满足
Figure PCTCN2021082539-appb-000471
当
Figure PCTCN2021082539-appb-000472
时R仅可取值1；当
Figure PCTCN2021082539-appb-000473
时R的取值可以是1、2。需要说明的是，O2个CSI-RS pattern指的是网络侧配置的所有CSI-RS resource中需要进行联合测量的CSI-RS pattern的数量。或者另一种可能的约束中，协议会约束联合测量CSI-RS resource的数目，和/或联合测量CSI-RS pattern的数目。
(ee)、考虑网络侧可能配置一个或多个梳分索引(或者频域分量，或者时延分量)，不同的梳分索引(或者频域分量，或者时延分量)用于测量CSI-RS端口对应的某一个系数。此时终端需要联合该CSI-RS端口中所有的梳分索引(或者频域分量，或者时延分量)进行测量。此时假设需要联合O3个梳分模式(或者频域分量，或者时延分量)进行联合测量，R的取值需要综合考虑R 0、O3的取值进行计算，并且此时R与O3联合决定了CSI-RS预编码的频域粒度，即网络侧CSI-RS预编码频域颗粒度为
Figure PCTCN2021082539-appb-000474
此时网络侧在连续的
Figure PCTCN2021082539-appb-000475
个RB上采用相同的CSI-RS预编码。R的一种可能取值为，
Figure PCTCN2021082539-appb-000476
示例性的，R 0＝2，O3＝2，此时R的取值必须满足
Figure PCTCN2021082539-appb-000477
当
Figure PCTCN2021082539-appb-000478
时R仅可取值1；当
Figure PCTCN2021082539-appb-000479
时R的取值可以是1、2。
(ff)、考虑网络侧可能配置O的数目(O为O1、O2或O3或者O1*O3或者O1*O2或者O2*O3或者O1*O2*O3)，协议可以先确定R的取值，然后再根据R 0、R的取值来计算O的可选取值，并且R与O联合决定了CSI-RS预编码的频域粒度，即网络侧CSI-RS预编码频域颗粒度为
Figure PCTCN2021082539-appb-000480
此时网络侧在连续的
Figure PCTCN2021082539-appb-000481
个RB上采用相同的CSI-RS预编码。O的一种可能取值为，
Figure PCTCN2021082539-appb-000482
示例性的，R 0＝2，R＝2，此时O的取值必须满足
Figure PCTCN2021082539-appb-000483
当
Figure PCTCN2021082539-appb-000484
时O仅可取值1，此时仅支持配置一个CSI-RS resource；当
Figure PCTCN2021082539-appb-000485
时O的取值可以是1、2。
在另一种可能的实现方式中，量化规则适用的码本为：W＝W 1W 2；其中，
Figure PCTCN2021082539-appb-000486
W 2＝K 1×1。其中，W 1为自由选择矩阵，W 1的一种特殊配置为单位矩阵。W 1也称为端口选择矩阵，以便从P个CSI-RS端口中自由选择K 1个端口，或者从P/2个CSI-RS端口中自由选择K 1/2个端口。需要说明的是，P为正整数，P/2为正整数，K 1为正整数，P是用于端口选择的CSI-RS端口的数量。
W 2为P个CSI-RS端口对应的叠加系数，叠加系数为P个CSI-RS端口的非零系数根据量化规则进行量化处理得到的量化值。
关于CSI-RS配置，目前确定有以下选项(或组合)，以支持较低的CSI-RS开销和/或考虑实际CSI-RS测量下对通用个人通信(universal personal telecommunication，UPT)性能的影响的CSI-RS处理复杂度：
选项0：一个CSI-RS端口对应一个系数。
选项1：支持为每个CSI-RS资源(resources)配置较低的CSI-RS密度，例如0.25。
选项2：支持与Rel-17PS码本关联的每个CSI-RS资源配置一个或多个CSI-RS图样(pattern)。
选项3：支持与Rel-17PS码本关联的每个CSI报告配置配置多个CSI-RS资源。
下面对分组规则进行详细说明，分组规则包括以下一项或多项：
(A)、G个分组基于CSI-RS端口的索引进行划分，不同的分组中CSI-RS端口的索引不一致。示例性的，请参阅图6，图6为本申请实施例中一种分组示意图。G＝2，分组1中包括CSI-RS端口1-4，其中，CSI-RS端口1对应的系数为系数1-5；分组2中包括CSI-RS端口5-8。需要说明的是，不同CSI-RS端口对应的第一系数的数目可以一致也可以不一致，例如：端口1对应的系数为系数1-5，合计5个系数；端口2对应的系数可以是系数6-10，合计5个系数。端口2对应的系数还可以是系数6-8，合计3个系数。此处不作限定。
特别地，当前协议中约定P个CSI-RS端口中前P/2个ports为一个极化，后P/2个ports为另一个极化，一种示例性的CSI-RS端口分组方式为按照极化进行分组，两个极化对应的CSI-RS ports各为一组。需要说明的是，基于CSI-RS端口的索引进行划分时，各个组中包含的CSI-RS端口索引可以不连续，比如P＝32时，分组1包含端口[1～8]与端口[17～24]，分组2包含端口[9～16]与端口[25～32]。
在又一种示例中，按照极化方向将对CSI-RS端口进行分组，例如：P＝32时，极化方向1对应分组1，分组1包含端口[1～16]，分组2包含端口[17-32]。
在又一种示例中，按照幅度量化使用的量化比特，和/或相位量化使用的量化比特进行分组，例如：P＝32，将P个端口分为2个分组，其中分组1包含端口[1～8]&[17～24]；分组2包含端口[9～16]&[25～32]。
在又一种示例中，按照极化方向和量化比特(幅度量化使用的量化比特，和/或相位量化使用的量化比特)进行分组，例如：P＝32，将P个端口分为4个分组，其中分组1包含端口[1～8]、分组2包含端口[9～16]、分组3包含端口[17～24]、分组4包含端口[25～32]。
(B)、G个分组基于CSI-RS端口对应的图样(pattern)进行划分，不同的分组中CSI-RS端口对应的图样不一致。具体的，该图样(pattern)指的是CSI-RS的导频图样，包括起始位置与密度等。示例性的，请参阅图7，图7为本申请实施例中另一种分组示意图。G＝2， 分组1中包括图样1-4，其中，图样1包括CSI-RS端口1-4。需要说明的是，每个CSI-RS端口所对应的系数的数目大于或等于1。不同CSI-RS端口对应的第一系数的数目可以一致也可以不一致。不同图样对应的CSI-RS端口的数目可以一致也可以不一致。不同分组对应的图样的数目可以一致也可以不一致，此处不作限定。
(C)、G个分组基于CSI-RS资源(resource)进行划分，其中，一个CSI-RS资源对应多个CSI-RS端口，不同的CSI-RS资源包括端口数相同或不同，不同的分组中CSI-RS端口对应的CSI-RS资源不一致。示例性的，G＝2，分组1中包括资源1，其中，资源1包括CSI-RS端口1-4；分组2中包括资源2，其中，资源2包括CSI-RS端口5-8。又一种示例中，G＝2，分组1中包括资源1和资源2，分组2中包括资源3和资源4，其中，资源1包括CSI-RS端口1-4，资源2包括CSI-RS端口5-8，资源3包括CSI-RS端口9-12，资源4包括CSI-RS端口13-16。需要说明的是，每个CSI-RS端口所对应的系数的数目大于或等于1。不同CSI-RS端口对应的第一系数的数目可以一致也可以不一致。不同资源对应的CSI-RS端口的数目可以一致也可以不一致。不同分组对应的资源的数目可以一致也可以不一致，此处不作限定。不同的资源中CSI-RS端口的索引可以是不同也可以是相同的，例如：资源1中包括CSI-RS端口1-4，资源2中包括CSI-RS端口1-4，不同资源中包括的CSI-RS端口所占用RB或RE不一致。
(D)、G个分组基于CSI-RS端口的索引，和/或，梳分索引进行划分，其中，梳分索引用于标识每个CSI-RS端口中一个或多个第一系数，不同的分组中CSI-RS端口的索引和/或梳分索引不一致。示例性的，如图8所示，图8为本申请实施例中另一种分组示意图。G＝2，分组1中对应的梳分索引为梳分索引1，分组2中对应的梳分索引为梳分索引2。以梳分索引1和梳分索引2为例进行说明：该梳分索引1用于标识每个CSI-RS端口中偶数位的资源块(resource block，RB)以计算第一系数，例如系数1；该梳分索引2用于标识每个CSI-RS端口中奇数位的资源块以计算第一系数，例如系数2。以CSI-RS端口1为例，该CSI-RS端口1中包括系数1-系数2。其中，梳分索引1用于标识每个CSI-RS端口中偶数位的资源块以计算第一系数，即CSI-RS端口1对应的系数1，该系数1对应的资源块包括：资源块2、资源块4、资源块6以及资源块8等；梳分索引2用于标识每个CSI-RS端口中奇数位的资源块以计算第一系数，即CSI-RS端口1对应的系数2，该系数2对应的资源块包括：资源块1、资源块3、资源块5、资源块7以及资源块9等。
(E)、G个分组基于CSI-RS端口的索引，和/或，时延分量索引进行划分，其中，时延分量索引用于标识每个CSI-RS端口中第一系数所在的时延位置，不同的分组中CSI-RS端口的索引和/或时延分量索引不一致。示例性的，如图9所示，图9为本申请实施例中另一种分组示意图。G＝2，分组1中对应的时延分量为时延分量1，分组2中对应的时延分量为时延分量2。以时延分量1和时延分量2为例进行说明，CSI-RS端口1为例，该CSI-RS端口1中包括系数1-系数2，其中，时延分量1用于标识每个第一系数1；时延分量2用于标识每个第一系数2。
(F)、G个分组基于CSI-RS端口的索引，和/或，频域分量索引进行划分，其中，频域分量索引用于标识每个CSI-RS端口中第一系数对应的频域基底，不同的分组中CSI-RS端口 的索引和/或频域分量索引不一致。方案(F)与方案(E)类似，此处不作赘述。
通过上述分组规则确定G个分组和G个分组中第一系数后，通信装置基于Z个量化规则对G个分组中第一系数进行量化处理得到量化指示信息。该量化处理包括：幅度量化(Amplitude quantization)处理、相位量化(Phase Quantization)处理，和/或，幅度相位联合量化处理。
针对不同极化的CSI-RS端口，通信装置可以使用相同或不同的量化规则对该第一系数进行量化处理；针对不同层(layer)的CSI-RS端口，网络装置可以配置相同或不同的量化规则。例如：针对不同极化间的CSI-RS端口具有较强相关性时，这些CSI-RS端口配置相同的量化规则。针对不同极化间的CSI-RS端口，当相关性较弱时，这些CSI-RS端口配置独立的量化规则。针对不同层间的CSI-RS端口具有较强相关性时，这些CSI-RS端口配置相同的量化规则。针对不同层间的CSI-RS端口，当相关性较弱时，这些CSI-RS端口配置独立的量化规则。
首先，介绍幅度量化处理：
第l层第g个分组中最强系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000487
Figure PCTCN2021082539-appb-000488
其中，
Figure PCTCN2021082539-appb-000489
为第l层第g个分组中最强系数的幅度量化指示，
Figure PCTCN2021082539-appb-000490
为由
Figure PCTCN2021082539-appb-000491
确定的幅度量化值，f 1,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000492
与
Figure PCTCN2021082539-appb-000493
之间的映射规则；该映射规则可以由幅度量化表格或函数确定，此处不作限制。
第l层第g个分组中最强系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000494
B g,l为第l层第g个分组中最强系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000495
为对log 2B g,l的向上取整后的数值。
示例性的，以
Figure PCTCN2021082539-appb-000496
(比特)为例，则
Figure PCTCN2021082539-appb-000497
与
Figure PCTCN2021082539-appb-000498
之间的映射规则(即幅度量化表格)如表2所示：
表2
Figure PCTCN2021082539-appb-000499
Figure PCTCN2021082539-appb-000500
第l层第g个分组第i个第一系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000501
Figure PCTCN2021082539-appb-000502
其中，
Figure PCTCN2021082539-appb-000503
为第l层第g个分组中第i个第一系数的幅度量化指示，
Figure PCTCN2021082539-appb-000504
为由
Figure PCTCN2021082539-appb-000505
确定的幅度量化值，f 2,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000506
与
Figure PCTCN2021082539-appb-000507
之间的映射规则。该映射规则可以由幅度量化表格或函数确定，此处不作限制。
第l层第g个分组中第一系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000508
Q g,l为第l层第g个分组中第一系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000509
为对log 2Q g,l的向上取整后的数值。
示例性的，以
Figure PCTCN2021082539-appb-000510
(比特)为例，则
Figure PCTCN2021082539-appb-000511
与
Figure PCTCN2021082539-appb-000512
之间的映射规则(即幅度量化表格)如表3所示：
表3
Figure PCTCN2021082539-appb-000513
Figure PCTCN2021082539-appb-000514
在另一种示例中，以
Figure PCTCN2021082539-appb-000515
(比特)为例，则
Figure PCTCN2021082539-appb-000516
与
Figure PCTCN2021082539-appb-000517
之间的映射规则(即幅度量化表格)如表4所示：
表4
Figure PCTCN2021082539-appb-000518
其次，介绍相位量化处理：
结合第一方面，在第一方面的一种可能的实现方式中，量化规则包括：
第l层第g个分组第i个第一系数进行相位量化处理后得到的相位量化值为φ l,i,g；
其中，
Figure PCTCN2021082539-appb-000519
c l,i,g∈{0,…，M g,l-1}，f 3,l,g(c l,i,g)为第l层第g个分组中c l,i,g对应的量化相位，f 3,l.g表示第l层第g个分组中φ l,i,g的相位与c l,i,g之间的映射规则。需要说明的是，相位量化处理可以采取均匀量化，也可以采取非均匀量化。当f 3,l,g(c l,i,g)为非均匀量化时，可以通过查表确定c l,i,g对应的量化相位，或者通过相应映射关系生成对应量化后相位。当相位量化处理采取均匀量化，则
Figure PCTCN2021082539-appb-000520
第l层第g个分组中第一系数进行相位量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000521
M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000522
为对log 2M g,l的向上取整后的数值。
示例性的，第l层第g个分组第i个第一系数的量化结果可以表示为：w l,i,g；
量化后的系数：
Figure PCTCN2021082539-appb-000523
即各个组中最强系数幅度量化为
Figure PCTCN2021082539-appb-000524
并作为各组参考幅度，然后各组系数以对应的参考幅度
Figure PCTCN2021082539-appb-000525
进行幅度差分量化，量化值为
Figure PCTCN2021082539-appb-000526
相位量化处理的比特位宽为4比特，且为均匀量化为例，
Figure PCTCN2021082539-appb-000527
以通讯装置采用幅度量化处理和相位量化处理为例。示例性的，以量化规则A和量化规则B为例进行说明，量化规则A与量化规则B为不一致的量化规则。请参阅表5：
表5
Figure PCTCN2021082539-appb-000528
需要说明的是，表5所示的仅为一种可能的示例，此处不限定其它的实现方式。
再次，介绍幅度相位联合量化：
第l层第g个分组中最强系数进行幅度相位联合量化处理后得到的幅度相位联合量化值为
Figure PCTCN2021082539-appb-000529
Figure PCTCN2021082539-appb-000530
其中，
Figure PCTCN2021082539-appb-000531
为由
Figure PCTCN2021082539-appb-000532
确定的幅度相位联合量化值，f 4,l,g表示第l层第g个分组中
Figure PCTCN2021082539-appb-000533
与
Figure PCTCN2021082539-appb-000534
之间的映射规则；该映射规则可以由幅度相位联合量化表格或函数确定，此处不作限制。
第l层第g个分组第i个第一系数进行幅度相位联合量化处理后得到的幅度相位联合量化值为
Figure PCTCN2021082539-appb-000535
Figure PCTCN2021082539-appb-000536
其中，
Figure PCTCN2021082539-appb-000537
为由
Figure PCTCN2021082539-appb-000538
确定的幅度相位联合量化值，f 5,l,g表示第l层第g个分组中
Figure PCTCN2021082539-appb-000539
与
Figure PCTCN2021082539-appb-000540
之间的映射规则。该映射规则可以由幅度相位联合量化表格或函数确定，此处不作限制。
通过上述幅度量化处理和相位量化处理，或者幅度相位联合量化，得到的量化指示信息包括以下一项或多项：
(a)、i 2,1,l，i 2,1,l为第l层中各个分组的最强系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000541
Figure PCTCN2021082539-appb-000542
为第l层第g个分组中最强系数的幅度量化指示；
Figure PCTCN2021082539-appb-000543
(b)、i 2,2,l，i 2,2,l为第l层中各个分组的第一系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000544
Figure PCTCN2021082539-appb-000545
为第l层第g个分组中第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000546
Figure PCTCN2021082539-appb-000547
为第l层第g个分组中第i个第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000548
i∈{0,…,N g,l-1}；
其中，l为层的索引，N g为第l层第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，B g为第l层第g个分组中最强系数进行幅度量化处理后有限取值的数目，Q g为第l层第g个分组中第一系数进行幅度量化处理后有限取值的数目，l为大于或等于1的整数，N g为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，B g为大于或等于1的整数，Q g为大于或等于1的整数。
需要说明的是，
Figure PCTCN2021082539-appb-000549
或
Figure PCTCN2021082539-appb-000550
也可以从1开始取值，此处不做限制。
(c)、i 2,3,l，i 2,3,l为第l层中各个分组的第一系数的相位量化指示，其中，i 2,3,l＝[c l,0…c l,g…c l,G-1]，c l,g为第l层第g个分组中第一系数的相位量化指示；c l,g＝[c l,0,g…c l,i,g…c l,Ng,l-1,g]，c l,i,g为第l层第g个分组第i个第一系数的相位量化指示，i∈{0,…,N g,l-1}，c l,i,g∈{0,…，M g,l-1}，M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，N g,l为第l层第g个分组中第一系数的数量，g为大于或等于0的整数，g小于或等于G-1，l为大于或等于1的整数，i为大于或等于0的整数。
需要说明的是，c l,i,g也可以从1开始取值，此处不做限制。
(d)、i 1,l，i 1,l为第l层的最强系数对应的索引，其中，i 1,l∈{0,1,…,P l-1}，l＝1,…,υ；
υ为最大层数，υ为大于或等于1的整数，P l为第l层中第一系数的总数，P l为大于或等于1的整数，l为大于或等于1的整数。
(e)、
Figure PCTCN2021082539-appb-000551
Figure PCTCN2021082539-appb-000552
其中，i 1,2,l为用于指示第l层中包括的第一系数是否非零的位图(bitmap)；
Figure PCTCN2021082539-appb-000553
指示第l层第g个分组第i个第一系数是否非零。
当
Figure PCTCN2021082539-appb-000554
指示第l层第g个分组第i个第一系数为0，
Figure PCTCN2021082539-appb-000555
指示第l层第g个分组第i个系数不执行幅度量化处理和相位量化处理，或者幅度相位联合量化；需要说明的是，
Figure PCTCN2021082539-appb-000556
也可以指示第l层第g个分组第i个系数执行幅度量化处理和相位量化处理，或者幅度相位联合量化。
当
Figure PCTCN2021082539-appb-000557
指示第l层第g个分组第i个第一系数为非零系数；
l为层的索引，N g,l为第l层第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
(f)、i 3,1,l，i 3,1,l为第l层中各个分组的最强系数的幅度相位联合量化指示，其中，
Figure PCTCN2021082539-appb-000558
为第l层第g个分组中最强系数的幅度相位联合量化指 示；
Figure PCTCN2021082539-appb-000559
i∈{0,…,N g,l-1}；
i 3,2,l，i 3,2,l为第l层中各个分组的第一系数的幅度相位联合量化指示，其中，
Figure PCTCN2021082539-appb-000560
为第l层第g个分组中第一系数的幅度相位联合量化指示；
Figure PCTCN2021082539-appb-000561
为第l层第g个分组中第一系数的幅度相位联合量化指示；
Figure PCTCN2021082539-appb-000562
其中，l为层的索引，N g,l为第l层第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，A g,l为第g个分组中最强系数进行幅度相位联合量化处理后有限取值的数目，L g,l为第g个分组中第一系数进行幅度相位联合量化处理后有限取值的数目，l为大于或等于0的整数，N g为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，A g,l为大于或等于1的整数，L g,l为大于或等于1的整数。
需要说明的是，
Figure PCTCN2021082539-appb-000563
和/或
Figure PCTCN2021082539-appb-000564
也可以从1开始取值，此处不做限制。
505、通信装置基于量化指示信息和反馈规则，确定量化反馈信息。
本实施例中，当通信装置得到量化指示信息后，基于该量化指示信息和反馈规则，确定量化反馈信息。
下面对反馈规则进行介绍，以下仅为示例，反馈规则包括以下一项或多项：
(AA)、不反馈最强系数的量化指示信息，对最强系数进行归一化处理，反馈最强系数的位置信息(例如，索引)。具体的，包括以下一项或多项：
Figure PCTCN2021082539-appb-000565
且
Figure PCTCN2021082539-appb-000566
通信装置不向网络装置发送
Figure PCTCN2021082539-appb-000567
和
Figure PCTCN2021082539-appb-000568
其中，
Figure PCTCN2021082539-appb-000569
为第l层最强系数所在分组的索引，第l层的最强系数在分组g *中的索引为
Figure PCTCN2021082539-appb-000570
通信装置向网络装置发送i 1,l。
规则1)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000571
对应的量化指示信息
Figure PCTCN2021082539-appb-000572
规则2)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000573
且i,g同时满足
Figure PCTCN2021082539-appb-000574
且
Figure PCTCN2021082539-appb-000575
对应的第一系数的量化指示信息
Figure PCTCN2021082539-appb-000576
规则3)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000577
且i,g同时满足
Figure PCTCN2021082539-appb-000578
且
Figure PCTCN2021082539-appb-000579
对应的第一系数的量化指示信息c l,i,g；
规则4)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000580
其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000581
且
Figure PCTCN2021082539-appb-000582
规则5)、通信装置不发送剩余的不满足规则1)-3)的第一系数的相位量化指示c l,i,g， 其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0，
Figure PCTCN2021082539-appb-000583
且
Figure PCTCN2021082539-appb-000584
示例性的，令第l层中待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000585
其中，
Figure PCTCN2021082539-appb-000586
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；
其中，
Figure PCTCN2021082539-appb-000587
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000588
规则1)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000589
对应的量化指示信息
Figure PCTCN2021082539-appb-000590
规则2)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000591
且i,g同时满足
Figure PCTCN2021082539-appb-000592
和
Figure PCTCN2021082539-appb-000593
的第一系数对应的K NZ-υ个量化指示信息
Figure PCTCN2021082539-appb-000594
规则3)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000595
且i,g同时满足
Figure PCTCN2021082539-appb-000596
和
Figure PCTCN2021082539-appb-000597
的第一系数对应的K NZ-υ个量化指示信息c l,i,g；
规则4)、通信装置不发送剩余的P-K NZ个第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000598
其中，剩余的P-K NZ个第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的P-K NZ个第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000599
且
Figure PCTCN2021082539-appb-000600
规则5)、通信装置不发送剩余的P-K NZ个第一系数的相位量化指示c l,i,g，其中，剩余的P-K NZ个第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的P-K NZ个第一系数的量化相位满足f 3,l,g(c l,i,g)＝0，
Figure PCTCN2021082539-appb-000601
且
Figure PCTCN2021082539-appb-000602
在一种可能的实现方案中，所有υ层中CSI-RS端口对应的待反馈的非零系数的总数：K NZ小于或等于C*K 0，其中，K 0为通信装置与网络装置约定或协议预先定义的一个数值，用来控制反馈系数的个数，C为大于或等于1的整数。
(BB)、反馈最强系数的量化指示信息，不反馈最强系数的位置信息(索引)。具体的，包括以下一项或多项：
通信装置不向网络装置发送i 1,l。
规则6)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000603
规则7)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000604
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000605
规则8)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000606
的第一系数对应的量化指示信息c l,i,g；
规则9)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000607
其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000608
规则10)、通信装置不发送剩余的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
示例性的，令第l层中CSI-RS端口对应的待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000609
其中，
Figure PCTCN2021082539-appb-000610
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；其中，
Figure PCTCN2021082539-appb-000611
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000612
规则6)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000613
规则7)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000614
的第一系数对应的K NZ个量化指示信息
Figure PCTCN2021082539-appb-000615
规则8)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000616
的第一系数对应的K NZ个量化指示信息c l,i,g；
规则9)、通信装置不发送剩余的P-K NZ个第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000617
其中，剩余的P-K NZ个第一系数为不满足规则6)、7)和8)的第一系数，剩余的P-K NZ个第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000618
规则10)、通信装置不发送剩余的P-K NZ个第一系数的相位量化指示c l,i,g，其中，剩余的P-K NZ个第一系数为不满足规则6)、7)和8)的第一系数，剩余的P-K NZ个第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
在一种可能的实现方案中，所有υ层中CSI-RS端口对应的待反馈的非零系数的总为：K NZ小于或等于C*K 0，其中，K 0为通信装置与网络装置约定或协议预先定义的一个数值，用来控制反馈系数的个数，C为大于或等于1的整数。
(CC)、不反馈最强系数的量化指示信息，对最强系数进行归一化处理，反馈最强系数的位置信息(索引)。具体的，包括以下一项或多项：
Figure PCTCN2021082539-appb-000619
通信装置不向网络装置发送
Figure PCTCN2021082539-appb-000620
和
Figure PCTCN2021082539-appb-000621
其中，
Figure PCTCN2021082539-appb-000622
为第l层最强系数所在分组的索引，第l层的最强系数在分组g *中的索引为
Figure PCTCN2021082539-appb-000623
通信装置向网络装置发送i 1,l。
规则11)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000624
对应的量化指示信息
Figure PCTCN2021082539-appb-000625
规则12)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000626
且i,g同时满足
Figure PCTCN2021082539-appb-000627
和
Figure PCTCN2021082539-appb-000628
的第一 系数对应的量化指示信息
Figure PCTCN2021082539-appb-000629
规则13)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000630
其中，剩余的第一系数为不满足规则11)-12)的第一系数且不为最强系数，剩余的第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000631
且
Figure PCTCN2021082539-appb-000632
示例性的，令第l层中CSI-RS端口对应的待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000633
其中，
Figure PCTCN2021082539-appb-000634
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；
其中，
Figure PCTCN2021082539-appb-000635
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000636
规则11)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000637
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000638
规则12)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000639
且i,g同时满足
Figure PCTCN2021082539-appb-000640
和
Figure PCTCN2021082539-appb-000641
的第一系数对应的K NZ-υ个量化指示信息
Figure PCTCN2021082539-appb-000642
规则13)、通信装置不发送剩余的P-K NZ个第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000643
其中，剩余的P-K NZ个第一系数为不满足规则11)-12)的第一系数且不为最强系数，剩余的P-K NZ个第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000644
且
Figure PCTCN2021082539-appb-000645
在一种可能的实现方案中，所有υ层中CSI-RS端口对应的待反馈的非零系数的总为：K NZ小于或等于C*K 0，其中，K 0为通信装置与网络装置约定或协议预先定义的一个数值，用来控制反馈系数的个数，C为大于或等于1的整数。
(DD)、反馈最强系数的量化指示信息，不反馈最强系数的位置信息(索引)。具体的：
通信装置不向网络装置发送i 1,l。
规则14)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000646
规则15)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000647
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000648
规则16)、通信装置不发送剩余的第一系数的幅度相位联合量化指示
Figure PCTCN2021082539-appb-000649
其中，剩余的第一系数为不满足规则14)和15)的第一系数，剩余的第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000650
示例性的，令第l层中CSI-RS端口对应的待反馈的非零系数的总数为：
Figure PCTCN2021082539-appb-000651
其中，
Figure PCTCN2021082539-appb-000652
P l为第l层中第一系数的总数，P l为正整数；
所有υ层中CSI-RS端口对应的待反馈的非零系数的总数为：K NZ；
其中，
Figure PCTCN2021082539-appb-000653
υ层中CSI-RS端口对应的第一系数的总数为P，其中，
Figure PCTCN2021082539-appb-000654
规则14)、通信装置向网络装置发送第一系数的量化指示信息
Figure PCTCN2021082539-appb-000655
规则15)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000656
的第一系数对应的K NZ个量化指示信息
Figure PCTCN2021082539-appb-000657
规则16)、通信装置不发送剩余的P-K NZ个第一系数的幅度相位联合量化指示
Figure PCTCN2021082539-appb-000658
其中，剩余的P-K NZ个第一系数为不满足规则14)和15)的第一系数，剩余的P-K NZ个第一系数的幅度相位联合量化值满足
Figure PCTCN2021082539-appb-000659
在一种可能的实现方案中，所有υ层中CSI-RS端口对应的待反馈的非零系数的总为：K NZ小于或等于C*K 0，其中，K 0为通信装置与网络装置约定或协议预先定义的一个数值，用来控制反馈系数的个数，C为大于或等于1的整数。
506、通信装置向网络装置发送量化反馈信息。
本实施例中，通信装置向网络装置发送步骤505中确定的量化反馈信息。
507、网络装置基于量化反馈信息构建下行信道。
本申请实施例中，基于信道的互易性，利用上行信道信息确定下行通信装置反馈时采用的量化规则。针对不同的第一系数可以采用不同的量化规则，以实现非均匀量化。在较小反馈开销的前提下，提升CSI反馈的精度。
在一种可能的仿真实验结果中，请参阅图10，图10为本申请实施例中一种仿真实验结果示意图。图10所示的为单极化下16个CSI-RS端口的叠加系数的归一化幅度分布。具体的，根据上行信道计算CSI-RS预编码权值，该预编码权值记为U。分别利用上行瞬时信道在U上的投影，计算得到上行瞬时信道的叠加系数。利用下行瞬时信道在U上的投影，计算得到下行瞬时信道的叠加系数。利用上行统计协方差矩阵在U上的投影，计算得到上行统计协方差矩阵的叠加系数。由图10可知，CSI-RS端口号(索引)1-8的能量较大，且动态范围较大；CSI-RS端口号(索引)9-16的能量较小，且动态范围较小。基于本申请实施例提出的技术方案，网络装置将CSI-RS端口号1-8分为一个分组(1-8)，CSI-RS端口号9-16分为另一个分组(9-16)。分组(1-8)对应的量化规则与分组(9-16)对应的量化规则采用不一样的量化精度，例如：分组(1-8)对应的量化规则采用较大的比特位宽，分组(9-16)对应的量化规则采用较小的比特位宽。通过采用不同的量化规则，可以在兼顾CSI反馈的精度的前提下，有效减小反馈开销。
基于该不同的量化规则进行量化处理，对量化处理结果的性能可以采用标准化马氏距离(normalized mahalanobis distance)进行表征。示例性的，请参阅图11，图11为本申请实施例中又一种仿真实验结果示意图。图11中，采用本申请实施例的技术方案得到的量 化处理结果的标准化马氏距离明显大于现有技术方案(图11中左侧的4根折线)，体现本申请实施例的技术方案在减小反馈开销的前提下，采用非均匀量化以获得较好的性能。
一种可选的实现方案如下：以P＝32，即包括32个CSI-RS端口为例。一个CSI-RS端口对应一个第一系数。假设32个CSI-RS ports划分为2组，端口对应系数能量大的前75％为一组，示例性地假设CSI-RS端口上的系数能量从大到小排列，那么端口[1-24]为一组(第一组)，端口[25-32]为一组(第二组)。UE侧将32个CSI-RS端口对应的系数中的最强系数进行归一化，并假设最强系数位于第一组中，即第一组的参考幅度为1。第二组中的最强系数采用4比特进行幅度量化，作为第二组的参考量化幅度值。两个组分别相对与各自的参考幅度进行幅度差分量化，第一组的差分幅度量化的比特位宽为3比特，第二组的差分幅度量化的比特位宽为2比特。各系数的相位统一采用4比特进行均匀量化。
上述主要以方法的角度对本申请实施例提供的方案进行了介绍。可以理解的是，通信装置与网络装置为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的模块及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对通信装置与网络装置进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
下面对本申请中的通信装置进行详细描述，请参阅图12，图12为本申请实施例中通信装置的一种实施例示意图。通信装置可以部署于终端设备或芯片系统中，通信装置1200包括：
处理模块1201，用于基于Z个量化规则对G个分组中第一系数进行量化处理得到量化指示信息，所述第一系数为信道状态信息-参考信号(channel state information-reference signal，CSI-RS)端口(port)对应的系数，其中，Z个量化规则为G个分组中CSI-RS端口对应的量化规则，G为大于1的整数，Z为小于或等于G的正整数；每个分组包括一个或多个第一系数，每个CSI-RS端口对应一个或多个第一系数；
每个分组使用一个量化规则进行量化处理，得到量化指示信息；
处理模块1201，还用于基于量化指示信息和反馈规则，确定量化反馈信息。
在一种可能的实现方式中，G个分组为全局的第一系数基于分组规则进行分组得到。
在一种可能的实现方式中，收发模块1202，用于向网络装置发送量化反馈信息。
在一种可能的实现方式中，收发模块1202，还用于接收来自网络装置的指示信息，指示信息用于指示通信装置使用的量化规则、反馈规则和分组规则中的一项或多项。
在一种可能的实现方式中，分组规则包括：
G个分组基于CSI-RS端口的索引进行划分，不同的分组中CSI-RS端口的索引不一致；
或者，
G个分组基于CSI-RS端口对应的图样进行划分，不同的分组中CSI-RS端口对应的图样不一致；
或者，
G个分组基于CSI-RS资源进行划分，其中，一个CSI-RS资源对应多个CSI-RS端口，不同的CSI-RS资源包括端口数相同或不同，不同的分组中CSI-RS端口对应的CSI-RS资源不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或梳分索引进行划分，其中，梳分索引用于标识每个CSI-RS端口中一个或多个第一系数，不同的分组中CSI-RS端口的索引和/或梳分索引不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或，时延分量索引进行划分，其中，时延分量索引用于标识每个CSI-RS端口中第一系数所在的时延位置，不同的分组中CSI-RS端口的索引和/或时延分量索引不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或，频域分量索引进行划分，其中，频域分量索引用于标识每个CSI-RS端口中第一系数对应的频域基底，不同的分组中CSI-RS端口的索引和/或频域分量索引不一致。
在一种可能的实现方式中，量化处理包括：幅度量化处理，相位量化处理，和/或幅度相位联合量化处理。
i 2,1,l，i 2,1,l为第l层中各个分组的最强系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000660
为第l层第g个分组中最强系数的幅度量化指示；
Figure PCTCN2021082539-appb-000661
i 2,2,l，i 2,2,l为第l层中各个分组的第一系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000662
为第l层第g个分组中第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000663
为第l层第g个分组中第i个第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000664
i∈{0,…,N g,l-1}；
其中，l为层的索引，N g,l为第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，B g,l为第g个分组中最强系数进行幅度量化处理后有限取值的数目，Q g,l为第g个分组中第一系数进行幅度量化处理后有限取值的数目，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，B g,l为大于或等于1的整数，Q g,l为大于或等于1的整数。
在一种可能的实现方式中，量化指示信息包括：
i 2,3,l，i 2,3,l为第l层中各个分组的第一系数的相位量化指示，其中，i 2,3,l＝[c l,0…c l,g…c l,G-1]，c l,g为第g个分组中第一系数的相位量化指示；
c l,g＝[c l,0,g…c l,i,g…c l,Ng-1,g]，c l,i,g为第l层第g个分组第i个第一系数的相位量化指示，i∈{0,…,N g,l-1}，c l,i,g∈{0,…，M g,l-1}，M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，N g,l为第l层第g个分组中第一系数的数量，g为大于或等于0的整数，g小于或等于G-1，l为大于或等于1的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化指示信息包括：
i 1,l，i 1,l为第l层的最强系数对应的索引，其中，i 1,l∈{0,1,…,P l-1}，l＝1,…,υ；
υ为最大层数，υ为大于或等于1的整数，P l为第l层中第一系数的总数，P l为大于或等于1的整数，l为大于或等于1的整数。
在一种可能的实现方式中，量化指示信息包括：
Figure PCTCN2021082539-appb-000665
其中，i 1,2,l为用于指示第l层中包括的第一系数是否非零的位图；
Figure PCTCN2021082539-appb-000666
指示第l层第g个分组第i个第一系数是否非零；
l为层的索引，N g,l为第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000667
Figure PCTCN2021082539-appb-000668
其中，
Figure PCTCN2021082539-appb-000669
为第l层第g个分组中最强系数的幅度量化指示，
Figure PCTCN2021082539-appb-000670
为由
Figure PCTCN2021082539-appb-000671
确定的幅度量化值，f 1,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000672
与
Figure PCTCN2021082539-appb-000673
之间的映射规则；
第l层第g个分组第i个第一系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000674
Figure PCTCN2021082539-appb-000675
其中，
Figure PCTCN2021082539-appb-000676
为第l层第g个分组中第i个第一系数的幅度量化指示，
Figure PCTCN2021082539-appb-000677
为由
Figure PCTCN2021082539-appb-000678
确定的幅度量化值，f 2,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000679
与
Figure PCTCN2021082539-appb-000680
之间的映射 规则。
在一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000681
B g,l为第l层第g个分组中最强系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000682
为对log 2B g,l的向上取整后的数值；
第l层第g个分组中第一系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000683
，Q g,l为第l层第g个分组中第一系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000684
为对log 2Q g,l的向上取整后的数值；
第l层第g个分组中第一系数进行相位量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000685
M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000686
为对log 2M g,l的向上取整后的数值。
在一种可能的实现方式中，量化规则包括：
第l层第g个分组第i个第一系数进行相位量化处理后得到的相位量化值为φ l,i,g；
其中，
Figure PCTCN2021082539-appb-000687
c l,i,g∈{0,…，M g,l-1}，f 3,l,g(c l,i,g)为第l层第g个分组中c l,i,g对应的量化相位，f 3,l.g表示第l层第g个分组中φ l,i,g的相位与c l,i,g之间的映射规则；
l为层的索引，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化规则包括：
当相位量化处理采取均匀量化，则
Figure PCTCN2021082539-appb-000688
在一种可能的实现方式中，反馈规则，包括：
Figure PCTCN2021082539-appb-000689
且
Figure PCTCN2021082539-appb-000690
通信装置不向网络装置发送
Figure PCTCN2021082539-appb-000691
和
Figure PCTCN2021082539-appb-000692
其中，
Figure PCTCN2021082539-appb-000693
为第l层最强系数所在分组的索引，第l层的最强系数在分组g *中的索引为
Figure PCTCN2021082539-appb-000694
通信装置向网络装置发送i 1,l。
在一种可能的实现方式中，反馈规则，包括：
规则1)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000695
对应的量化指示信息
Figure PCTCN2021082539-appb-000696
规则2)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000697
且i,g同时满足
Figure PCTCN2021082539-appb-000698
且
Figure PCTCN2021082539-appb-000699
对应的第 一系数的量化指示信息
Figure PCTCN2021082539-appb-000700
规则3)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000701
且i,g同时满足
Figure PCTCN2021082539-appb-000702
且
Figure PCTCN2021082539-appb-000703
对应的第一系数的量化指示信息c l,i,g；
规则4)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000704
其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000705
且
Figure PCTCN2021082539-appb-000706
规则5)、通信装置不发送剩余的不满足规则1)-3)的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0，
Figure PCTCN2021082539-appb-000707
且
Figure PCTCN2021082539-appb-000708
在一种可能的实现方式中，反馈规则，包括：
通信装置不向网络装置发送i 1,l。
在一种可能的实现方式中，反馈规则，包括：
规则6)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000709
规则7)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000710
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000711
规则8)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000712
的第一系数对应的量化指示信息c l,i,g；
规则9)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000713
其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000714
规则10)、通信装置不发送剩余的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
下面对本申请中的网络装置进行详细描述，请参阅图13，图13为本申请实施例中网络装置的一种实施例示意图。网络装置可以部署于芯片系统中，网络装置1300包括：
收发模块1301，用于接收来自通信装置的量化反馈信息；
可以理解，“接收来自通信装置的量化反馈信息”可以是从通信装置直接接收，也可以是从通信装置间接，例如，经由网络装置内部的其他模块接收(即，由网络装置内部的其他模块输入)。
量化反馈信息为通信装置基于反馈规则和量化指示信息得到，量化指示信息为通信装 置基于Z个量化规则对G个分组中第一系数进行量化处理得到，所述第一系数为信道状态信息-参考信号(channel state information-reference signal，CSI-RS)端口(port)对应的系数；其中，Z个量化规则为G个分组中第一系数对应的量化规则，G为大于1的整数，Z为小于或等于G的正整数；每个分组包括一个或多个第一系数，每个CSI-RS端口对应一个或多个第一系数；
每个分组使用一个量化规则进行量化处理，得到量化指示信息；
处理模块1302，用于基于量化指示信息构建下行信道。
在一种可能的实现方式中，G个分组为全局的第一系数基于分组规则进行分组得到。
在一种可能的实现方式中，收发模块1301，还用于向通信装置发送指示信息，指示信息用于指示通信装置使用的量化规则、反馈规则和分组规则中的一项或多项。
在一种可能的实现方式中，分组规则包括：
G个分组基于CSI-RS端口的索引进行划分，不同的分组中CSI-RS端口的索引不一致；
或者，
G个分组基于CSI-RS端口对应的图样进行划分，不同的分组中CSI-RS端口对应的图样不一致；
或者，
G个分组基于CSI-RS资源进行划分，其中，一个CSI-RS资源对应多个CSI-RS端口，不同的CSI-RS资源包括端口数相同或不同，不同的分组中CSI-RS端口对应的CSI-RS资源不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或梳分索引进行划分，其中，梳分索引用于标识每个CSI-RS端口中一个或多个第一系数，不同的分组中CSI-RS端口的索引和/或梳分索引不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或，时延分量索引进行划分，其中，时延分量索引用于标识每个CSI-RS端口中第一系数所在的时延位置，不同的分组中CSI-RS端口的索引和/或时延分量索引不一致；
或者，
G个分组基于CSI-RS端口的索引，和/或，频域分量索引进行划分，其中，频域分量索引用于标识每个CSI-RS端口中第一系数对应的频域基底，不同的分组中CSI-RS端口的索引和/或频域分量索引不一致。
在一种可能的实现方式中，量化处理包括：幅度量化处理，相位量化处理，和/或幅度相位联合量化处理。
i 2,1,l，i 2,1,l为第l层中各个分组的最强系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000715
为第l层第g个分组中最强系数的幅度量化指示；
Figure PCTCN2021082539-appb-000716
i 2,2,l，i 2,2,l为第l层中各个分组的第一系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000717
为第l层第g个分组中第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000718
为第l层第g个分组中第i个第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000719
i∈{0,…,N g,l-1}；
其中，l为层的索引，N g,l为第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，B g,l为第g个分组中最强系数进行幅度量化处理后有限取值的数目，Q g,l为第g个分组中第一系数进行幅度量化处理后有限取值的数目，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，B g,l为大于或等于1的整数，Q g,l为大于或等于1的整数。
在一种可能的实现方式中，量化指示信息包括：
i 2,3,l，i 2,3,l为第l层中各个分组的第一系数的相位量化指示，其中，i 2,3,l＝[c l,0…c l,g…c l,G-1]，c l,g为第g个分组中第一系数的相位量化指示；
c l,g＝[c l,0,g…c l,i,g…c l,Ng-1,g]，c l,i,g为第l层第g个分组第i个第一系数的相位量化指示，i∈{0,…,N g,l-1}，c l,i,g∈{0,…，M g,l-1}，M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，N g,l为第l层第g个分组中第一系数的数量，g为大于或等于0的整数，g小于或等于G-1，l为大于或等于1的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化指示信息包括：
i 1,l，i 1,l为第l层的最强系数对应的索引，其中，i 1,l∈{0,1,…,P l-1}，l＝1,…,υ；
υ为最大层数，υ为大于或等于1的整数，P l为第l层中第一系数的总数，P l为大于或等于1的整数，l为大于或等于1的整数。
在一种可能的实现方式中，量化指示信息包括：
Figure PCTCN2021082539-appb-000720
其中，i 1,2,l为用于指示第l层中包括的第一系数是否非零的位图；
Figure PCTCN2021082539-appb-000721
指示第l层第g个分组第i个第一系数是否非零；
l为层的索引，N g,l为第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000722
Figure PCTCN2021082539-appb-000723
其中，
Figure PCTCN2021082539-appb-000724
为第l层第g个分组中最强系数的幅度量化指示，
Figure PCTCN2021082539-appb-000725
为由
Figure PCTCN2021082539-appb-000726
确定的幅度量化值，f 1,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000727
与
Figure PCTCN2021082539-appb-000728
之间的映射规则；
第l层第g个分组第i个第一系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000729
Figure PCTCN2021082539-appb-000730
其中，
Figure PCTCN2021082539-appb-000731
为第l层第g个分组中第i个第一系数的幅度量化指示，
Figure PCTCN2021082539-appb-000732
为由
Figure PCTCN2021082539-appb-000733
确定的幅度量化值，f 2,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000734
与
Figure PCTCN2021082539-appb-000735
之间的映射规则。
在一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000736
B g,l为第l层第g个分组中最强系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000737
为对log 2B g,l的向上取整后的数值；
第l层第g个分组中第一系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000738
Q g,l为第l层第g个分组中第一系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000739
为对log 2Q g,l的向上取整后的数值；
第l层第g个分组中第一系数进行相位量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000740
M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000741
为对log 2M g,l的向上取整后的数值。
在一种可能的实现方式中，量化规则包括：
第l层第g个分组第i个第一系数进行相位量化处理后得到的相位量化值为φ l,i,g；
其中，
Figure PCTCN2021082539-appb-000742
c l,i,g∈{0,…，M g,l-1}，f 3,l,g(c l,i,g)为第l层第g个分组中c l,i,g对应的量化相位，f 3,l.g表示第l层第g个分组中φ l,i,g的相位与c l,i,g之间的映射规则；
l为层的索引，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化规则包括：
当相位量化处理采取均匀量化，则
Figure PCTCN2021082539-appb-000743
在一种可能的实现方式中，反馈规则，包括：
Figure PCTCN2021082539-appb-000744
且
Figure PCTCN2021082539-appb-000745
通信装置不向网络装置发送
Figure PCTCN2021082539-appb-000746
和
Figure PCTCN2021082539-appb-000747
其中，
Figure PCTCN2021082539-appb-000748
为第l层最强系数所在分组的索引，第l层的最强系数在分组g *中的索引为
Figure PCTCN2021082539-appb-000749
通信装置向网络装置发送i 1,l。
在一种可能的实现方式中，反馈规则，包括：
规则1)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000750
对应的量化指示信息
Figure PCTCN2021082539-appb-000751
规则2)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000752
且i,g同时满足
Figure PCTCN2021082539-appb-000753
且
Figure PCTCN2021082539-appb-000754
对应的第一系数的量化指示信息
Figure PCTCN2021082539-appb-000755
规则3)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000756
且i,g同时满足
Figure PCTCN2021082539-appb-000757
且
Figure PCTCN2021082539-appb-000758
对应的第一系数的量化指示信息c l,i,g；
规则4)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000759
其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000760
且
Figure PCTCN2021082539-appb-000761
规则5)、通信装置不发送剩余的不满足规则1)-3)的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0，
Figure PCTCN2021082539-appb-000762
且
Figure PCTCN2021082539-appb-000763
在一种可能的实现方式中，反馈规则，包括：
通信装置不向网络装置发送i 1,l。
在一种可能的实现方式中，反馈规则，包括：
规则6)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000764
规则7)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000765
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000766
规则8)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000767
的第一系数对应的量化指示信息c l,i,g；
规则9)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000768
其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000769
规则10)、通信装置不发送剩余的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
需要说明的是，通信装置各模块/或元器件之间的信息交互、执行过程等内容和网络装置各模块/或元器件之间的信息交互、执行过程等内容，与本申请中图5-图9对应的方法实施例基于同一构思，具体内容可参见本申请前述所示的方法实施例中的叙述，此处不再赘述。
需要说明的是，对于通信装置与网络i 2,1,l，i 2,1,l为第l层中各个分组的最强系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000770
为第l层第g个分组中最强系数的幅度量化指示；
Figure PCTCN2021082539-appb-000771
i 2,2,l，i 2,2,l为第l层中各个分组的第一系数的幅度量化指示，其中，
Figure PCTCN2021082539-appb-000772
为第l层第g个分组中第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000773
为第l层第g个分组中第i个第一系数的幅度量化指示；
Figure PCTCN2021082539-appb-000774
i∈{0,…,N g,l-1}；
其中，l为层的索引，N g,l为第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，B g,l为第g个分组中最强系数进行幅度量化处理后有限取值的数目，Q g,l为第g个分组中第一系数进行幅度量化处理后有限取值的数目，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，B g,l为大于或等于1的整数，Q g,l为大于或等于1的整数。
在一种可能的实现方式中，量化指示信息包括：
i 2,3,l，i 2,3,l为第l层中各个分组的第一系数的相位量化指示，其中，i 2,3,l＝[c l,0…c l,g…c l,G-1]，c l,g为第g个分组中第一系数的相位量化指示；
c l,g＝[c l,0,g…c l,i,g…c l,Ng-1,g]，c l,i,g为第l层第g个分组第i个第一系数的相位量化指示，i∈{0,…,N g,l-1}，c l,i,g∈{0,…，M g,l-1}，M g,l为第l层第g个分组中第一系数进行相位量化处理后有限取值的数目，N g,l为第l层第g个分组中第一系数的数量，g为大于或等于0的整数，g小于或等于G-1，l为大于或等于1的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化指示信息包括：
i 1,l，i 1,l为第l层的最强系数对应的索引，其中，i 1,l∈{0,1,…,P l-1}，l＝1,…,υ；
υ为最大层数，υ为大于或等于1的整数，P l为第l层中第一系数的总数，P l为大于或等于1的整数，l为大于或等于1的整数。
在一种可能的实现方式中，量化指示信息包括：
Figure PCTCN2021082539-appb-000775
其中，i 1,2,l为用于指示第l层中包括的第一系数是否非零的位图；
Figure PCTCN2021082539-appb-000776
指示第l层第g个分组第i个第一系数是否非零；
l为层的索引，N g,l为第g个分组中第一系数的数量，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000777
Figure PCTCN2021082539-appb-000778
其中，
Figure PCTCN2021082539-appb-000779
为第l层第g个分组中最强系数的幅度量化指示，
Figure PCTCN2021082539-appb-000780
为由
Figure PCTCN2021082539-appb-000781
确定的幅度量化值，f 1,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000782
与
Figure PCTCN2021082539-appb-000783
之间的映射规则；
第l层第g个分组第i个第一系数进行幅度量化处理后得到的幅度量化值为
Figure PCTCN2021082539-appb-000784
Figure PCTCN2021082539-appb-000785
其中，
Figure PCTCN2021082539-appb-000786
为第l层第g个分组中第i个第一系数的幅度量化指示，
Figure PCTCN2021082539-appb-000787
为由
Figure PCTCN2021082539-appb-000788
确定的幅度量化值，f 2,l,g表示第l层第g个分组的
Figure PCTCN2021082539-appb-000789
与
Figure PCTCN2021082539-appb-000790
之间的映射规则。
在一种可能的实现方式中，量化规则包括以下一项或多项：
第l层第g个分组中最强系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000791
B g,l为第l层第g个分组中最强系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000792
为对log 2B g,l的向上取整后的数值；
第l层第g个分组中第一系数进行幅度量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000793
Q g,l为第l层第g个分组中第一系数进行幅度量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000794
为对log 2Q g,l的向上取整后的数值；
第l层第g个分组中第一系数进行相位量化处理使用的比特位宽为
Figure PCTCN2021082539-appb-000795
M g,l为第 l层第g个分组中第一系数进行相位量化处理后有限取值的数目，
Figure PCTCN2021082539-appb-000796
为对log 2M g,l的向上取整后的数值。
在一种可能的实现方式中，量化规则包括：
第l层第g个分组第i个第一系数进行相位量化处理后得到的相位量化值为φ l,i,g；
其中，
Figure PCTCN2021082539-appb-000797
c l,i,g∈{0,…，M g,l-1}，f 3,l,g(c l,i,g)为第l层第g个分组中c l,i,g对应的量化相位，f 3,l.g表示第l层第g个分组中φ l,i,g的相位与c l,i,g之间的映射规则；
l为层的索引，g为分组的索引，i为每个分组中第一系数的索引，l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
在一种可能的实现方式中，量化规则包括：
当相位量化处理采取均匀量化，则
Figure PCTCN2021082539-appb-000798
在一种可能的实现方式中，反馈规则，包括：
Figure PCTCN2021082539-appb-000799
且
Figure PCTCN2021082539-appb-000800
通信装置不向网络装置发送
Figure PCTCN2021082539-appb-000801
和
Figure PCTCN2021082539-appb-000802
其中，
Figure PCTCN2021082539-appb-000803
为第l层最强系数所在分组的索引，第l层的最强系数在分组g *中的索引为
Figure PCTCN2021082539-appb-000804
通信装置向网络装置发送i 1,l。
在一种可能的实现方式中，反馈规则，包括：
规则1)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000805
对应的量化指示信息
Figure PCTCN2021082539-appb-000806
规则2)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000807
且i,g同时满足
Figure PCTCN2021082539-appb-000808
且
Figure PCTCN2021082539-appb-000809
对应的第一系数的量化指示信息
Figure PCTCN2021082539-appb-000810
规则3)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000811
且i,g同时满足
Figure PCTCN2021082539-appb-000812
且
Figure PCTCN2021082539-appb-000813
对应的第一系数的量化指示信息c l,i,g；
规则4)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000814
其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000815
且
Figure PCTCN2021082539-appb-000816
规则5)、通信装置不发送剩余的不满足规则1)-3)的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则1)-3)的第一系数且不为最强系数，剩余的第一系数 的量化相位满足f 3,l,g(c l,i,g)＝0，
Figure PCTCN2021082539-appb-000817
且
Figure PCTCN2021082539-appb-000818
在一种可能的实现方式中，反馈规则，包括：
通信装置不向网络装置发送i 1,l。
在一种可能的实现方式中，反馈规则，包括：
规则6)、通信装置向网络装置发送第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000819
规则7)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000820
的第一系数对应的量化指示信息
Figure PCTCN2021082539-appb-000821
规则8)、通信装置向网络装置发送满足
Figure PCTCN2021082539-appb-000822
的第一系数对应的量化指示信息c l,i,g；
规则9)、通信装置不发送剩余的第一系数的幅度量化指示
Figure PCTCN2021082539-appb-000823
其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的幅度量化值满足
Figure PCTCN2021082539-appb-000824
规则10)、通信装置不发送剩余的第一系数的相位量化指示c l,i,g，其中，剩余的第一系数为不满足规则6)、7)和8)的第一系数，剩余的第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
设备的具体实现方式以及带来的有益效果，均可以参考图5-图9对应的各个方法实施例中的叙述，此处不再一一赘述。
本申请实施例还提供了一种处理装置，处理装置包括处理器和接口；该处理器，用于执行上述任一方法实施例的信息反馈方法。
应理解，上述处理装置可以是一个芯片，该处理器可以通过硬件实现也可以通过软件来实现，当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
其中，“通过硬件实现”是指通过不具有程序指令处理功能的硬件处理电路来实现上述模块或者单元的功能，该硬件处理电路可以通过分立的硬件元器件组成，也可以是集成电路。为了减少功耗、降低尺寸，通常会采用集成电路的形式来实现。硬件处理电路可以包括ASIC(application-specific integrated circuit，专用集成电路)，或者PLD(programmable logic device，可编程逻辑器件)；其中，PLD又可包括FPGA(field programmable gate array，现场可编程门阵列)、CPLD(complex programmable logic device，复杂可编程逻辑器件)等等。这些硬件处理电路可以是单独封装的一块半导体芯片(如封装成一个ASIC)；也可以跟其他电路(如CPU、DSP)集成在一起后封装成一个半导体芯片，例如，可以在一个硅基上形成多种硬件电路以及CPU，并单独封装成一个芯片，这种芯片也称为SoC，或者也可以在硅基上形成用于实现FPGA功能的电路以及CPU，并单独封闭成一个芯片，这种芯片也称为SoPC(system on a programmable chip，可编程片上系统)。
本申请还提供一种通信系统，其包括通信装置与网络装置中的至少一种或多种。
本申请实施例还提供的一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机控制通信装置或网络装置执行如前述方法实施例所示任一项实现方式。
本申请实施例还提供的一种计算机程序产品，计算机程序产品包括计算机程序代码，当计算机程序代码在计算机上运行时，使得计算机执行如前述方法实施例所示任一项实现方式。
本申请实施例还提供一种芯片系统，包括存储器和处理器，存储器用于存储计算机程序，处理器用于从存储器中调用并运行计算机程序，使得芯片执行如前述方法实施例所示任一项实现方式。
本申请实施例还提供一种芯片系统，包括处理器，处理器用于调用并运行计算机程序，使得芯片执行如前述方法实施例所示任一项实现方式。
另外需说明的是，以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。另外，本申请提供的装置实施例附图中，模块之间的连接关系表示它们之间具有通信连接，具体可以实现为一条或多条通信总线或信号线。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到本申请可借助软件加必需的通用硬件的方式来实现，当然也可以通过专用硬件包括专用集成电路、专用CPU、专用存储器、专用元器件等来实现。一般情况下，凡由计算机程序完成的功能都可以很容易地用相应的硬件来实现，而且，用来实现同一功能的具体硬件结构也可以是多种多样的，例如模拟电路、数字电路或专用电路等。但是，对本申请而言更多情况下软件程序实现是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在可读取的存储介质中，如计算机的软盘、U盘、移动硬盘、ROM、RAM、磁碟或者光盘等，包括若干指令用以使得一台计算机设备执行本申请各个实施例所述的方法。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。
所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、通信装置、计算设备或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、通信装置、计算设备或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存储的任何可用介质或者是包含一个或多个可用介质集成的通信装置、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(Solid State Disk， SSD))等。
应理解，说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络装置等)执行本申请各个实施例方法的全部或部分步骤。

Claims (48)

  1. 一种信息反馈方法，其特征在于，包括：
    通信装置基于Z个量化规则对G个分组中第一系数进行量化处理得到量化指示信息，所述第一系数为信道状态信息-参考信号CSI-RS端口对应的系数，其中，所述Z个量化规则为所述G个分组中所述第一系数对应的所述量化规则，G为大于1的整数，Z为小于或等于G的正整数；每个所述分组包括一个或多个所述第一系数，每个CSI-RS端口对应一个或多个所述第一系数；
    每个所述分组使用一个所述量化规则进行量化处理，得到所述量化指示信息；
    所述通信装置基于所述量化指示信息和反馈规则，确定量化反馈信息。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述通信装置向网络装置发送所述量化反馈信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述通信装置接收来自所述网络装置的指示信息，所述指示信息用于指示所述通信装置使用的所述量化规则、所述反馈规则和所述分组规则中的一项或多项。
  4. 一种信息反馈方法，其特征在于，包括：
    网络装置接收来自通信装置的量化反馈信息；
    所述量化反馈信息为所述通信装置基于反馈规则和量化指示信息得到，所述量化指示信息为所述通信装置基于Z个所述量化规则对G个分组中第一系数进行量化处理得到，所述第一系数为信道状态信息-参考信号CSI-RS端口对应的系数；其中，所述Z个量化规则为G个分组中所述第一系数对应的所述量化规则，G为大于1的整数，Z为小于或等于G的正整数；每个所述分组包括一个或多个所述第一系数，每个CSI-RS端口对应一个或多个所述第一系数；
    每个所述分组使用一个所述量化规则进行量化处理，得到所述量化指示信息；
    所述网络装置基于所述量化指示信息构建下行信道。
  5. 根据权利要求1-3或4中任一项所述的方法，其特征在于，
    所述G个分组为全局的所述第一系数基于分组规则进行分组得到。
  6. 根据权利要求4或5所述的方法，其特征在于，所述方法还包括：
    所述网络装置向所述通信装置发送指示信息，所述指示信息用于指示所述通信装置使用的所述量化规则、所述反馈规则和所述分组规则中的一项或多项。
  7. 根据权利要求2-3或4-6中任一项所述的方法，其特征在于，所述分组规则包括：
    所述G个分组基于CSI-RS端口的索引进行划分，不同的所述分组中所述CSI-RS端口的索引不一致；
    或者，
    所述G个分组基于CSI-RS端口对应的图样进行划分，不同的所述分组中CSI-RS端口对应的所述图样不一致；
    或者，
    所述G个分组基于CSI-RS资源进行划分，其中，一个所述CSI-RS资源对应的多个CSI-RS端口，不同的所述CSI-RS资源包括端口数相同或不同，不同的所述分组中CSI-RS端口对应的所述CSI-RS资源不一致；
    或者，
    所述G个分组基于所述CSI-RS端口的索引，和/或梳分索引进行划分，其中，所述梳分索引用于标识每个所述CSI-RS端口中一个或多个所述第一系数，不同的所述分组中所述 CSI-RS端口的索引和/或所述梳分索引不一致；
    或者，
    所述G个分组基于所述CSI-RS端口的索引，和/或，时延分量索引进行划分，其中，所述时延分量索引用于标识每个所述CSI-RS端口中所述第一系数所在的时延位置，不同的所述分组中所述CSI-RS端口的索引和/或所述时延分量索引不一致；
    或者，
    所述G个分组基于所述CSI-RS端口的索引，和/或，频域分量索引进行划分，其中，所述频域分量索引用于标识每个所述CSI-RS端口中所述第一系数对应的频域基底，不同的所述分组中所述CSI-RS端口的索引和/或所述频域分量索引不一致。
  8. 根据权利要求1-7中任一项所述的方法，其特征在于，所述量化处理包括：幅度量化处理，相位量化处理，和/或幅度相位联合量化处理。
  9. 根据权利要求8所述的方法，其特征在于，所述量化指示信息包括：
    i 2,1,l，i 2,1,l为第l层中各个所述分组的最强系数的幅度量化指示，其中，
    Figure PCTCN2021082539-appb-100001
    Figure PCTCN2021082539-appb-100002
    为第l层第g个所述分组中所述最强系数的幅度量化指示；
    Figure PCTCN2021082539-appb-100003
    i 2,2,l，i 2,2,l为第l层中各个所述分组的所述第一系数的幅度量化指示，其中，
    Figure PCTCN2021082539-appb-100004
    为所述第l层第g个分组中所述第一系数的幅度量化指示；
    Figure PCTCN2021082539-appb-100005
    为所述第l层第g个分组中第i个所述第一系数的幅度量化指示；
    Figure PCTCN2021082539-appb-100006
    其中，l为层的索引，N g,l为所述第g个分组中所述第一系数的数量，g为所述分组的索引，i为每个所述分组中所述第一系数的索引，B g,l为所述第g个分组中所述最强系数进行所述幅度量化处理后有限取值的数目，Q g,l为所述第g个分组中所述第一系数进行所述幅度量化处理后有限取值的数目，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，B g,l为大于或等于1的整数，Q g,l为大于或等于1的整数。
  10. 根据权利要求8-9中任一项所述的方法，其特征在于，所述量化指示信息包括：
    i 2,3,l，i 2,3,l为第l层中各个所述分组的所述第一系数的相位量化指示，其中，i 2,3,l＝[c l,0…c l,g…c l,G-1]，c l,g为第g个所述分组中所述第一系数的相位量化指示；
    c l,g＝[c l,0,g…c l,i,g…c l,Ng-1,g]，c l,i,g为所述第l层第g个分组第i个所述第一系数的相位 量化指示，i∈{0,…,N g,l-1}，c l,i,g∈{0,…，M g,l-1}，M g,l为所述第l层第g个分组中所述第一系数进行所述相位量化处理后有限取值的数目，N g,l为第l层所述第g个分组中所述第一系数的数量，g为大于或等于0的整数，g小于或等于G-1，l为大于或等于1的整数，i为大于或等于0的整数。
  11. 根据权利要求8-10中任一项所述的方法，其特征在于，所述量化指示信息包括：
    i 1,l，i 1,l为第l层的最强系数对应的索引，其中，i 1,l∈{0,1,…,P l-1}，l＝1,…,υ；
    υ为最大层数，υ为大于或等于1的整数，P l为第l层中所述第一系数的总数，P l为大于或等于1的整数，l为大于或等于1的整数。
  12. 根据权利要求8-11中任一项所述的方法，其特征在于，所述量化指示信息包括：
    Figure PCTCN2021082539-appb-100007
    Figure PCTCN2021082539-appb-100008
    其中，i 1,2,l为用于指示第l层中包括的所述第一系数是否非零的位图；
    Figure PCTCN2021082539-appb-100009
    指示第l层第g个所述分组第i个所述第一系数是否非零；
    l为层的索引，N g,l为所述第g个分组中所述第一系数的数量，g为所述分组的索引，i为每个所述分组中所述第一系数的索引，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
  13. 根据权利要求8-12中任一项所述的方法，其特征在于，所述量化规则包括以下一项或多项：
    第l层第g个所述分组中所述最强系数进行所述幅度量化处理后得到的幅度量化值为
    Figure PCTCN2021082539-appb-100010
    Figure PCTCN2021082539-appb-100011
    其中，
    Figure PCTCN2021082539-appb-100012
    为第l层第g个所述分组中所述最强系数的幅度量化指示，
    Figure PCTCN2021082539-appb-100013
    为由
    Figure PCTCN2021082539-appb-100014
    确定的所述幅度量化值，f 1,l,g表示第l层第g个所述分组的
    Figure PCTCN2021082539-appb-100015
    与
    Figure PCTCN2021082539-appb-100016
    之间的映射规则；
    第l层第g个所述分组第i个所述第一系数进行所述幅度量化处理后得到的幅度量化值为
    Figure PCTCN2021082539-appb-100017
    Figure PCTCN2021082539-appb-100018
    其中，
    Figure PCTCN2021082539-appb-100019
    为第l层第g个所述分组中第i个所述第一系数的幅度量化指示，
    Figure PCTCN2021082539-appb-100020
    为由
    Figure PCTCN2021082539-appb-100021
    确定的所述幅度量化值，f 2,l,g表示第l层第g个所述分组的
    Figure PCTCN2021082539-appb-100022
    与
    Figure PCTCN2021082539-appb-100023
    之间的映射规则。
  14. 根据权利要求8-13中任一项所述的方法，其特征在于，所述量化规则包括以下一项或多项：
    第l层第g个所述分组中所述最强系数进行所述幅度量化处理使用的比特位宽为
    Figure PCTCN2021082539-appb-100024
    B g,l为所述第l层第g个分组中所述最强系数进行所述幅度量化处理后有限取值的数目，
    Figure PCTCN2021082539-appb-100025
    为对log 2B g,l的向上取整后的数值；
    第l层第g个所述分组中所述第一系数进行所述幅度量化处理使用的比特位宽为
    Figure PCTCN2021082539-appb-100026
    Q g,l为所述第l层第g个分组中所述第一系数进行所述幅度量化处理后有限取值的数目，
    Figure PCTCN2021082539-appb-100027
    为对log 2Q g,l的向上取整后的数值；
    第l层第g个所述分组中所述第一系数进行所述相位量化处理使用的比特位宽为
    Figure PCTCN2021082539-appb-100028
    M g,l为所述第l层第g个分组中所述第一系数进行所述相位量化处理后有限取值的数目，
    Figure PCTCN2021082539-appb-100029
    为对log 2M g,l的向上取整后的数值。
  15. 根据权利要求14所述的方法，其特征在于，所述量化规则包括：
    第l层第g个所述分组第i个所述第一系数进行所述相位量化处理后得到的相位量化值为φ l,i,g；
    其中，
    Figure PCTCN2021082539-appb-100030
    f 3,l,g(c l,i,g)为第l层第g个所述分组中c l,i,g对应的量化相位，f 3,l.g表示第l层第g个所述分组中φ l,i,g的相位与c l,i,g之间的映射规则；
    l为层的索引，g为所述分组的索引，i为每个所述分组中所述第一系数的索引，l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
  16. 根据权利要求15所述的方法，其特征在于，所述量化规则包括：
    当所述相位量化处理采取均匀量化，则
    Figure PCTCN2021082539-appb-100031
  17. 根据权利要求13-16中任一项所述的方法，其特征在于，所述反馈规则，包括：
    Figure PCTCN2021082539-appb-100032
    且
    Figure PCTCN2021082539-appb-100033
    所述通信装置向所述网络装置不发送
    Figure PCTCN2021082539-appb-100034
    Figure PCTCN2021082539-appb-100035
    和
    Figure PCTCN2021082539-appb-100036
    其中，
    Figure PCTCN2021082539-appb-100037
    为第l层最强系数所在所述分组的索引，所述第l层的最强系数在所述分组g *中的索引为
    Figure PCTCN2021082539-appb-100038
    所述通信装置向所述网络装置发送i 1,l。
  18. 根据权利要求17所述的方法，其特征在于，所述反馈规则，包括：
    规则1)、所述通信装置向所述网络装置发送满足
    Figure PCTCN2021082539-appb-100039
    对应的量化指示信息
    Figure PCTCN2021082539-appb-100040
    规则2)、所述通信装置向所述网络装置发送满足
    Figure PCTCN2021082539-appb-100041
    且i,g同时满足
    Figure PCTCN2021082539-appb-100042
    且
    Figure PCTCN2021082539-appb-100043
    对应的所述第一系数的量化指示信息
    Figure PCTCN2021082539-appb-100044
    规则3)、所述通信装置向所述网络装置发送满足
    Figure PCTCN2021082539-appb-100045
    且i,g同时满足
    Figure PCTCN2021082539-appb-100046
    且
    Figure PCTCN2021082539-appb-100047
    对应的所述第一系数的量化指示信息c l,i,g；
    规则4)、所述通信装置不发送剩余的所述第一系数的幅度量化指示
    Figure PCTCN2021082539-appb-100048
    其中，所述剩余的所述第一系数为不满足所述规则1)-3)的所述第一系数且不为所述最强系数，所述剩余的所述第一系数的幅度量化值满足
    Figure PCTCN2021082539-appb-100049
    且
    Figure PCTCN2021082539-appb-100050
    规则5)、所述通信装置不发送剩余的不满足所述规则1)-3)的所述第一系数的相位量化指示c l,i,g，其中，所述剩余的所述第一系数为不满足所述规则1)-3)的所述第一系数且不为所述最强系数，所述剩余的所述第一系数的量化相位满足
    Figure PCTCN2021082539-appb-100051
    Figure PCTCN2021082539-appb-100052
    且
    Figure PCTCN2021082539-appb-100053
  19. 根据权利要求13-16中任一项所述的方法，其特征在于，所述反馈规则，包括：
    所述通信装置向所述网络装置不发送i 1,l。
  20. 根据权利要求19所述的方法，其特征在于，所述反馈规则，包括：
    规则6)、所述通信装置向所述网络装置发送所述第一系数对应的量化指示信息
    Figure PCTCN2021082539-appb-100054
    规则7)、所述通信装置向所述网络装置发送满足
    Figure PCTCN2021082539-appb-100055
    的所述第一系数对应的量化指示信息
    Figure PCTCN2021082539-appb-100056
    规则8)、所述通信装置向所述网络装置发送满足
    Figure PCTCN2021082539-appb-100057
    的所述第一系数对应的量化指示信息c l,i,g；
    规则9)、所述通信装置不发送剩余的所述第一系数的幅度量化指示
    Figure PCTCN2021082539-appb-100058
    其中，所述剩余的所述第一系数为不满足所述规则6)、7)和8)的所述第一系数，所述剩余的所述第一系数的幅度量化值满足
    Figure PCTCN2021082539-appb-100059
    规则10)、所述通信装置不发送剩余的所述第一系数的相位量化指示c l,i,g，其中，所述剩余的所述第一系数为不满足所述规则6)、7)和8)的所述第一系数，所述剩余的所述第 一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
  21. 一种通信装置，其特征在于，包括：
    处理模块，用于基于Z个量化规则对G个分组中第一系数进行量化处理得到量化指示信息，所述第一系数为信道状态信息-参考信号CSI-RS端口对应的系数，其中，所述Z个量化规则为所述G个分组中所述第一系数对应的所述量化规则，G为大于1的整数，Z为小于或等于G的正整数；每个所述分组包括一个或多个所述第一系数，每个CSI-RS端口对应一个或多个所述第一系数；
    每个所述分组使用一个所述量化规则进行量化处理，得到所述量化指示信息；
    所述处理模块，还用于基于所述量化指示信息和反馈规则，确定量化反馈信息。
  22. 根据权利要求21所述的通信装置，其特征在于，所述通信装置还包括：
    收发模块，用于向网络装置发送所述量化反馈信息。
  23. 根据权利要求21所述的通信装置，其特征在于，所述通信装置还包括：
    收发模块，还用于接收来自所述网络装置的指示信息，所述指示信息用于指示所述通信装置使用的所述量化规则、所述反馈规则和所述分组规则中的一项或多项。
  24. 根据权利要求21所述的通信装置，其特征在于，所述处理模块为处理器。
  25. 根据权利要求22或24所述的通信装置，其特征在于，所述处理模块为处理器，所述收发模块为收发器。
  26. 一种网络装置，其特征在于，包括：
    收发模块，用于接收来自通信装置的量化反馈信息；
    所述量化反馈信息为所述通信装置基于反馈规则和量化指示信息得到，所述量化指示信息为所述通信装置基于Z个所述量化规则对G个分组中第一系数进行量化处理得到，所述第一系数为信道状态信息-参考信号CSI-RS端口对应的系数；所述G个分组为全局的所述第一系数基于分组规则进行分组得到；其中，所述Z个量化规则为G个分组中所述第一系数对应的所述量化规则，G为大于1的整数，Z为小于或等于G的正整数；每个所述分组包括一个或多个所述第一系数，每个CSI-RS端口对应一个或多个所述第一系数；
    每个所述分组使用一个所述量化规则进行量化处理，得到所述量化指示信息；
    处理模块，用于基于所述量化指示信息构建下行信道。
  27. 根据权利要求21-25或26中任一项所述的网络装置，其特征在于，
    所述G个分组为全局的所述第一系数基于分组规则进行分组得到。
  28. 根据权利要求21-25或26-27中任一项所述的网络装置，其特征在于，所述收发模块，还用于向所述通信装置发送指示信息，所述指示信息用于指示所述通信装置使用的所述量化规则、所述反馈规则和所述分组规则中的一项或多项。
  29. 根据权利要求26-28中任一项所述的网络装置，其特征在于，所述收发模块为收发器，所述处理模块为处理器。
  30. 根据权利要求21-25或26-29中任一项所述的通信装置或所述的网络装置，其特征在于，所述分组规则包括：
    所述G个分组基于CSI-RS端口的索引进行划分，不同的所述分组中所述CSI-RS端口的索引不一致；
    或者，
    所述G个分组基于CSI-RS端口对应的图样进行划分，不同的所述分组中CSI-RS端口对应的所述图样不一致；
    或者，
    所述G个分组基于CSI-RS资源进行划分，其中，一个所述CSI-RS资源对应的多个CSI-RS端口，不同的所述CSI-RS资源包括端口数相同或不同，不同的所述分组中CSI-RS端口对应的所述CSI-RS资源不一致；
    或者，
    所述G个分组基于所述CSI-RS端口的索引，和/或梳分索引进行划分，其中，所述梳分索引用于标识每个所述CSI-RS端口中一个或多个所述第一系数，不同的所述分组中所述CSI-RS端口的索引和/或所述梳分索引不一致；
    或者，
    所述G个分组基于所述CSI-RS端口的索引，和/或，时延分量索引进行划分，其中，所述时延分量索引用于标识每个所述CSI-RS端口中所述第一系数所在的时延位置，不同的所述分组中所述CSI-RS端口的索引和/或所述时延分量索引不一致；
    或者，
    所述G个分组基于所述CSI-RS端口的索引，和/或，频域分量索引进行划分，其中，所述频域分量索引用于标识每个所述CSI-RS端口中所述第一系数对应的频域基底，不同的所述分组中所述CSI-RS端口的索引和/或所述频域分量索引不一致。
  31. 根据权利要求21-30中任一项所述的通信装置或所述的网络装置，其特征在于，所述量化处理包括：幅度量化处理，相位量化处理，和/或幅度相位联合量化处理。
  32. 根据权利要求31所述的通信装置或所述的网络装置，其特征在于，所述量化指示信息包括：
    i 2,1,l，i 2,1,l为第l层中各个所述分组的最强系数的幅度量化指示，其中，
    Figure PCTCN2021082539-appb-100060
    Figure PCTCN2021082539-appb-100061
    为第l层第g个所述分组中所述最强系数的幅度量化指示；
    Figure PCTCN2021082539-appb-100062
    i 2,2,l，i 2,2,l为第l层中各个所述分组的所述第一系数的幅度量化指示，其中，
    Figure PCTCN2021082539-appb-100063
    为所述第l层第g个分组中所述第一系数的幅度量化指示；
    Figure PCTCN2021082539-appb-100064
    为所述第l层第g个分组中第i个所述第一系数的幅度量化指示；
    Figure PCTCN2021082539-appb-100065
    其中，l为层的索引，N g,l为所述第g个分组中所述第一系数的数量，g为所述分组的索引，i为每个所述分组中所述第一系数的索引，B g,l为所述第g个分组中所述最强系数进行所述幅度量化处理后有限取值的数目，Q g,l为所述第g个分组中所述第一系数进行所述幅度量化处理后有限取值的数目，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，g小于或等于G-1，i为大于或等于0的整数，B g,l为大于或等于1 的整数，Q g,l为大于或等于1的整数。
  33. 根据权利要求31-32中任一项所述的通信装置或所述的网络装置，其特征在于，所述量化指示信息包括：
    i 2,3,l，i 2,3,l为第l层中各个所述分组的所述第一系数的相位量化指示，其中，i 2,3,l＝[c l,0…c l,g…c l,G-1]，c l,g为第g个所述分组中所述第一系数的相位量化指示；
    c l,g＝[c l,0,g…c l,i,g…c l,Ng-1,g]，c l,i,g为所述第l层第g个分组第i个所述第一系数的相位量化指示，i∈{0,…,N g,l-1}，c l,i,g∈{0,…，M g,l-1}，M g,l为所述第l层第g个分组中所述第一系数进行所述相位量化处理后有限取值的数目，N g,l为所述第l层第g个分组中所述第一系数的数量，g为大于或等于0的整数，g小于或等于G-1，l为大于或等于1的整数，i为大于或等于0的整数。
  34. 根据权利要求31-33中任一项所述的通信装置或所述的网络装置，其特征在于，所述量化指示信息包括：
    i 1,l，i 1,l为第l层的最强系数对应的索引，其中，i 1,l∈{0,1,…,P l-1}，l＝1,…,υ；
    υ为最大层数，υ为大于或等于1的整数，P l为第l层中所述第一系数的总数，P l为大于或等于1的整数，l为大于或等于1的整数。
  35. 根据权利要求31-34中任一项所述的通信装置或所述的网络装置，其特征在于，所述量化指示信息包括：
    Figure PCTCN2021082539-appb-100066
    Figure PCTCN2021082539-appb-100067
    其中，i 1,2,l为用于指示第l层中包括的所述第一系数是否非零的位图；
    Figure PCTCN2021082539-appb-100068
    指示第l层第g个所述分组第i个所述第一系数是否非零；
    l为层的索引，N g,l为所述第g个分组中所述第一系数的数量，g为所述分组的索引，i为每个所述分组中所述第一系数的索引，l为大于或等于1的整数，N g,l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
  36. 根据权利要求31-35中任一项所述的通信装置或所述的网络装置，其特征在于，所述量化规则包括以下一项或多项：
    第l层第g个所述分组中所述最强系数进行所述幅度量化处理后得到的幅度量化值为
    Figure PCTCN2021082539-appb-100069
    Figure PCTCN2021082539-appb-100070
    其中，
    Figure PCTCN2021082539-appb-100071
    为第l层第g个所述分组中所述最强系数的幅度量化指示，
    Figure PCTCN2021082539-appb-100072
    为由
    Figure PCTCN2021082539-appb-100073
    确定的所述幅度量化值，f 1,l,g表示第l层第g个所述分组的
    Figure PCTCN2021082539-appb-100074
    与
    Figure PCTCN2021082539-appb-100075
    之间的映射规则；
    第l层第g个所述分组第i个所述第一系数进行所述幅度量化处理后得到的幅度量化值为
    Figure PCTCN2021082539-appb-100076
    Figure PCTCN2021082539-appb-100077
    其中，
    Figure PCTCN2021082539-appb-100078
    为第l层第g个所述分组中第i个所述第一系数的幅度量化指示，
    Figure PCTCN2021082539-appb-100079
    为由
    Figure PCTCN2021082539-appb-100080
    确定的所述幅度量化值，f 2,l,g表示第l层第g个所述分组的
    Figure PCTCN2021082539-appb-100081
    与
    Figure PCTCN2021082539-appb-100082
    之间的映射规则。
  37. 根据权利要求31-36中任一项所述的通信装置或所述的网络装置，其特征在于，所述量化规则包括以下一项或多项：
    第l层第g个所述分组中所述最强系数进行所述幅度量化处理使用的比特位宽为
    Figure PCTCN2021082539-appb-100083
    B g,l为所述第l层第g个分组中所述最强系数进行所述幅度量化处理后有限取值的数目，
    Figure PCTCN2021082539-appb-100084
    为对log 2B g,l的向上取整后的数值；
    第l层第g个所述分组中所述第一系数进行所述幅度量化处理使用的比特位宽为
    Figure PCTCN2021082539-appb-100085
    Q g,l为所述第l层第g个分组中所述第一系数进行所述幅度量化处理后有限取值的数目，
    Figure PCTCN2021082539-appb-100086
    为对log 2Q g,l的向上取整后的数值；
    第l层第g个所述分组中所述第一系数进行所述相位量化处理使用的比特位宽为
    Figure PCTCN2021082539-appb-100087
    M g,l为所述第l层第g个分组中所述第一系数进行所述相位量化处理后有限取值的数目，
    Figure PCTCN2021082539-appb-100088
    为对log 2M g,l的向上取整后的数值。
  38. 根据权利要求37所述的通信装置或所述的网络装置，其特征在于，所述量化规则包括：
    第l层第g个所述分组第i个所述第一系数进行所述相位量化处理后得到的相位量化值为φ l,i,g；
    其中，
    Figure PCTCN2021082539-appb-100089
    f 3,l,g(c l,i,g)为第l层第g个所述分组中c l,i,g对应的量化相位，f 3,l.g表示第l层第g个所述分组中φ l,i,g的相位与c l,i,g之间的映射规则；
    l为层的索引，g为所述分组的索引，i为每个所述分组中所述第一系数的索引，l为大于或等于1的整数，g为大于或等于0的整数，i为大于或等于0的整数。
  39. 根据权利要求38所述的通信装置或所述的网络装置，其特征在于，所述量化规则 包括：
    当所述相位量化处理采取均匀量化，则
    Figure PCTCN2021082539-appb-100090
  40. 根据权利要求36-39中任一项所述的通信装置或所述的网络装置，其特征在于，所述反馈规则，包括：
    Figure PCTCN2021082539-appb-100091
    且
    Figure PCTCN2021082539-appb-100092
    所述通信装置向所述网络装置不发送
    Figure PCTCN2021082539-appb-100093
    Figure PCTCN2021082539-appb-100094
    和
    Figure PCTCN2021082539-appb-100095
    其中，
    Figure PCTCN2021082539-appb-100096
    为第l层最强系数所在所述分组的索引，所述第l层的最强系数在所述分组g *中的索引为
    Figure PCTCN2021082539-appb-100097
    所述通信装置向所述网络装置发送i 1,l。
  41. 根据权利要求40所述的通信装置或所述的网络装置，其特征在于，所述反馈规则，包括：
    规则1)、所述通信装置向所述网络装置发送满足
    Figure PCTCN2021082539-appb-100098
    对应的量化指示信息
    Figure PCTCN2021082539-appb-100099
    规则2)、所述通信装置向所述网络装置发送满足
    Figure PCTCN2021082539-appb-100100
    且i,g同时满足
    Figure PCTCN2021082539-appb-100101
    且
    Figure PCTCN2021082539-appb-100102
    对应的所述第一系数的量化指示信息
    Figure PCTCN2021082539-appb-100103
    规则3)、所述通信装置向所述网络装置发送满足
    Figure PCTCN2021082539-appb-100104
    且i,g同时满足
    Figure PCTCN2021082539-appb-100105
    且
    Figure PCTCN2021082539-appb-100106
    对应的所述第一系数的量化指示信息c l,i,g；
    规则4)、所述通信装置不发送剩余的所述第一系数的幅度量化指示
    Figure PCTCN2021082539-appb-100107
    其中，所述剩余的所述第一系数为不满足所述规则1)-3)的所述第一系数且不为所述最强系数，所述剩余的所述第一系数的幅度量化值满足
    Figure PCTCN2021082539-appb-100108
    且
    Figure PCTCN2021082539-appb-100109
    规则5)、所述通信装置不发送剩余的不满足所述规则1)-3)的所述第一系数的相位量化指示c l,i,g，其中，所述剩余的所述第一系数为不满足所述规则1)-3)的所述第一系数且不为所述最强系数，所述剩余的所述第一系数的量化相位满足
    Figure PCTCN2021082539-appb-100110
    Figure PCTCN2021082539-appb-100111
    且
    Figure PCTCN2021082539-appb-100112
  42. 根据权利要求36-39中任一项所述的通信装置或所述的网络装置，其特征在于，所述反馈规则，包括：
    所述通信装置向所述网络装置不发送i 1,l。
  43. 根据权利要求42所述的通信装置或所述的网络装置，其特征在于，所述反馈规则，包括：
    规则6)、所述通信装置向所述网络装置发送所述第一系数对应的量化指示信息
    Figure PCTCN2021082539-appb-100113
    规则7)、所述通信装置向所述网络装置发送满足
    Figure PCTCN2021082539-appb-100114
    的所述第一系数对应的量化指示信息
    Figure PCTCN2021082539-appb-100115
    规则8)、所述通信装置向所述网络装置发送满足
    Figure PCTCN2021082539-appb-100116
    的所述第一系数对应的量化指示信息c l,i,g；
    规则9)、所述通信装置不发送剩余的所述第一系数的幅度量化指示
    Figure PCTCN2021082539-appb-100117
    其中，所述剩余的所述第一系数为不满足所述规则6)、7)和8)的所述第一系数，所述剩余的所述第一系数的幅度量化值满足
    Figure PCTCN2021082539-appb-100118
    规则10)、所述通信装置不发送剩余的所述第一系数的相位量化指示c l,i,g，其中，所述剩余的所述第一系数为不满足所述规则6)、7)和8)的所述第一系数，所述剩余的所述第一系数的量化相位满足f 3,l,g(c l,i,g)＝0。
  44. 一种通信装置，其特征在于，所述通信装置包括：至少一个处理器；
    所述至少一个处理器，用于执行存储器中存储的计算机程序或指令，以使所述通信装置执行如权利要求1-20中任一项所述的方法。
  45. 一种通信装置，其特征在于，所述通信装置包括：至少一个处理器和存储器；
    所述存储器，用于存储计算机程序或指令；
    所述至少一个处理器，用于执行存储器中存储的计算机程序或指令，以使所述通信装置执行如权利要求1-20中任一项所述的方法。
  46. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质具有程序指令，当所述程序指令被直接或者间接执行时，使得如权利要求1-20中任一所述的方法被实现。
  47. 一种计算机程序产品，其特征在于，包括指令，当所述指令在计算机上运行时，使得计算机执行权利要求1-20中任一项所述的方法。
  48. 一种芯片系统，其特征在于，所述芯片系统包括至少一个处理器，所述处理器用于执行存储器中存储的计算机程序或指令，当所述计算机程序或所述指令在所述至少一个处理器中执行时，使得如权利要求1-20中任一所述的方法被实现。
PCT/CN2021/082539 2021-03-24 2021-03-24 一种信息反馈方法以及相关装置 WO2022198471A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2021/082539 WO2022198471A1 (zh) 2021-03-24 2021-03-24 一种信息反馈方法以及相关装置
CN202180096249.5A CN117063406A (zh) 2021-03-24 2021-03-24 一种信息反馈方法以及相关装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/082539 WO2022198471A1 (zh) 2021-03-24 2021-03-24 一种信息反馈方法以及相关装置

Publications (1)

Publication Number Publication Date
WO2022198471A1 true WO2022198471A1 (zh) 2022-09-29

Family

ID=83395023

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/082539 WO2022198471A1 (zh) 2021-03-24 2021-03-24 一种信息反馈方法以及相关装置

Country Status (2)

Country Link
CN (1) CN117063406A (zh)
WO (1) WO2022198471A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102273091A (zh) * 2008-11-03 2011-12-07 爱立信电话股份有限公司 发射参考信号并确定多天线发射的预编码矩阵的方法
CN105406911A (zh) * 2014-09-10 2016-03-16 三星电子株式会社 用于高级无线通信系统的具有基扩展的信道状态信息报告
US20160233936A1 (en) * 2013-09-13 2016-08-11 Samsung Electronics Co., Ltd. Method and apparatus for grouping antennas in multiple-input multiple-output antenna system
CN106797241A (zh) * 2014-10-24 2017-05-31 三星电子株式会社 用于fd‑mimo系统的高效矢量量化器
WO2020143694A1 (zh) * 2019-01-08 2020-07-16 华为技术有限公司 预编码矩阵指示方法及相关设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102273091A (zh) * 2008-11-03 2011-12-07 爱立信电话股份有限公司 发射参考信号并确定多天线发射的预编码矩阵的方法
US20160233936A1 (en) * 2013-09-13 2016-08-11 Samsung Electronics Co., Ltd. Method and apparatus for grouping antennas in multiple-input multiple-output antenna system
CN105406911A (zh) * 2014-09-10 2016-03-16 三星电子株式会社 用于高级无线通信系统的具有基扩展的信道状态信息报告
CN106797241A (zh) * 2014-10-24 2017-05-31 三星电子株式会社 用于fd‑mimo系统的高效矢量量化器
WO2020143694A1 (zh) * 2019-01-08 2020-07-16 华为技术有限公司 预编码矩阵指示方法及相关设备

Also Published As

Publication number Publication date
CN117063406A (zh) 2023-11-14

Similar Documents

Publication Publication Date Title
WO2020156103A1 (zh) 信息反馈方法及装置
WO2018126794A1 (zh) 一种资源指示方法、装置及系统
WO2021083068A1 (zh) 上报信道状态信息的方法和通信装置
JP7238167B2 (ja) プリコーディング行列表示及び決定方法、及び通信装置
CN111342873A (zh) 一种信道测量方法和通信装置
US20190334602A1 (en) Channel State Information Feedback Method, User Equipment, and Base Station
WO2020199964A1 (zh) 通信方法及装置
WO2020143577A1 (zh) 参数配置方法和通信装置
WO2022021443A1 (zh) 一种预编码方法及装置
WO2020108637A1 (zh) 信道探测的配置方法及装置
WO2022022331A1 (zh) 获取信道参数的方法及装置
WO2019137445A1 (zh) 信道状态信息的测量方法和装置
WO2021179311A1 (zh) 一种信道状态信息csi测量的指示方法和通信装置
WO2020143580A1 (zh) 用于构建预编码向量的向量指示方法和通信装置
WO2021203373A1 (zh) 一种信道测量方法和通信装置
EP4040699A1 (en) Method for configuring transmission port of a downlink reference signal, and communication apparatus
US20230283337A1 (en) Beam Training Method and Apparatus
CN108282204B (zh) 通信方法、装置及系统
JP7371270B2 (ja) チャネル状態情報フィードバック方法及び通信装置
WO2020143461A1 (zh) 指示和确定预编码向量的方法以及通信装置
WO2020135101A1 (zh) 用于构建预编码向量的向量指示方法以及通信装置
US11784853B2 (en) Channel measurement method and communication apparatus
WO2022262545A1 (zh) 一种信道状态信息的反馈方法及装置
WO2022198471A1 (zh) 一种信息反馈方法以及相关装置
WO2023011511A1 (zh) 一种信息反馈方法以及相关装置

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: 21932100

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202180096249.5

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21932100

Country of ref document: EP

Kind code of ref document: A1