Codebook instruction method, device and storage medium

Abstract

The embodiment of the present disclosure provides a codebook indication method, an apparatus, and a storage medium. The method includes transmitting codebook indication information to a network side device, and the codebook indication information includes at least one of port selection indication information, strongest coefficient indication information, and frequency domain basis vector indication information of at least one transmission layer. The embodiment of the present disclosure can reduce the feedback overhead of some port indications, the feedback overhead of strongest coefficient indications, and the overhead of frequency domain basis vector indications by instructing at least one of the port selection, the strongest coefficient of a combination coefficient matrix, and the frequency domain basis vector of at least one transmission layer, compared with the conventional independent indication for each layer.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to a Chinese patent application filed on May 11, 2021, bearing application number 2021105137208 and entitled "Codebook Indication Method, Apparatus and Storage Medium," the entire contents of which are incorporated herein by reference. [Technical Field]

[0002] The present disclosure relates to the technical field of communications, and in particular to a codebook indication method, apparatus and storage medium. [Background technology]

[0003] When generating a codebook, the network side device requires information on each part of the codebook structure, and the terminal side device can instruct the network side device. After receiving the information, the network side device can generate a codebook based on the information reported by the terminal side device.

[0004] However, for the port selection codebook of some communication systems, when rank≧1, adopting the prior art to indicate the information of each part in the codebook structure increases the feedback overhead. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments of the present disclosure provide a codebook indication method, apparatus and storage medium, which realize indication of information related to the codebook of at least one transmission layer, thereby reducing indication overhead and feedback overhead. [Means for solving the problem]

[0006] In a first aspect, an embodiment of the present disclosure comprises: sending codebook indication information to a network side device, wherein the codebook indication information includes: port selection instruction information; Strongest coefficient indication information; and frequency domain basis vector indication information.

[0007] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, the port selection indication information includes first information and second information; Here, when the two polarization directions selected by the terminal side device correspond to the same port, the first information is used to indicate a product set of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in one polarization direction, or When the two polarization directions selected by the terminal side device correspond to different ports, the first information is used to indicate a product set of ports corresponding to each transmission layer in the two polarization directions, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in the two polarization directions.

[0008] Optionally, according to a codebook instruction method according to one embodiment of the present disclosure, the first information has a size of

number

[0009] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, the first information is indicated by a bitmap bitmap having a size of P bits.

[0010] Optionally, according to a codebook instruction method according to one embodiment of the present disclosure, the second information has a size of

number

number

[0011] Optionally, according to a codebook indication method according to an embodiment of the present disclosure, the second information is indicated by a bitmap bitmap having a size of PK bits; Here, K denotes the number of elements in the intersection set.

[0012] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, the port selection indication information includes first information and second information; Here, when the two polarization directions selected by the terminal-side device correspond to the same port, the first information is used to indicate the union of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate ports corresponding to each transmission layer in one polarization direction; or when the two polarization directions selected by the terminal-side device correspond to different ports, the first information is used to indicate the union of ports corresponding to each transmission layer in the two polarization directions, and the second information is used to indicate ports corresponding to each transmission layer in the two polarization directions.

[0013] Optionally, according to a codebook instruction method according to one embodiment of the present disclosure, the first information has a size of

number

[0014] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, the first information is indicated by a bitmap bitmap having a size of P bits.

[0015] Optionally, according to a codebook instruction method according to one embodiment of the present disclosure, the second information has a size of

number

[0016] Optionally, the size of K2' can be set by the network side equipment.

number

[0017] Optionally, according to a codebook indication method according to an embodiment of the present disclosure, the second information is indicated by a bitmap having a size of K2 bits; Here, K2 denotes the number of elements in the union.

[0018] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, for the l-th transmission layer, the strongest coefficient indication information is

number

number

[0019] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, for the l-th transmission layer, the strongest coefficient indication information is

number

number

number

number

number

[0020] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, for the l-th transmission layer, the strongest coefficient indication information is

number

number

[0021] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, for an l-th transmission layer, the frequency-domain basis vector indication information is

number

[0022] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, for the l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap bitmap having a size of 2N-1.

[0023] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, for an l-th transmission layer, the frequency-domain basis vector indication information is

number

number

number

[0024] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, for the l-th transmission layer, the frequency domain basis vector indication information includes a bitmap bitmap and a bitmap bitmap each having a size of N-1 bits.

number

number

[0025] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, for an l-th transmission layer, the frequency-domain basis vector indication information is

number

[0026] Optionally, according to a codebook indication method according to one embodiment of the present disclosure, for the l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap bitmap having a size of N bits.

[0027] Optionally, according to a codebook indication method according to an embodiment of the present disclosure, the frequency domain basis vector indication information includes third information and fourth information; Here, the third information is used to indicate a product set of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate the remaining frequency domain basis vectors other than the product set among the frequency domain basis vectors corresponding to each transmission layer.

[0028] Optionally, according to a codebook indication method according to an embodiment of the present disclosure, the frequency domain basis vector indication information includes third information and fourth information; Here, the third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate frequency domain basis vectors corresponding to each transmission layer, respectively.

[0029] In a second aspect, an embodiment of the present disclosure comprises: a memory for storing a computer program; a transceiver for transmitting and receiving data under control of said processor; reading the computer program in the memory; a processor for performing an operation of sending codebook indication information to a network side device, wherein the codebook indication information includes: port selection instruction information; Strongest coefficient indication information; and a frequency domain basis vector indication information.

[0030] Optionally, in a codebook indication device according to an embodiment of the present disclosure, the port selection indication information includes first information and second information; Here, when the two polarization directions selected by the terminal side device correspond to the same port, the first information is used to indicate a product set of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in one polarization direction, or When the two polarization directions selected by the terminal side device correspond to different ports, the first information is used to indicate a product set of ports corresponding to each transmission layer in the two polarization directions, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in the two polarization directions.

[0031] Optionally, in the codebook indicating device according to one embodiment of the present disclosure, the first information has a size of

number

[0032] Optionally, in accordance with the codebook indicating device according to one embodiment of the present disclosure, the first information is indicated by a bitmap having a size of P bits.

[0033] Optionally, in accordance with the codebook indicating device according to one embodiment of the present disclosure, the second information has a size of

number

number

[0034] Optionally, in a codebook indicating device according to an embodiment of the present disclosure, the second information is indicated by a bitmap having a size of PK bits; Here, K denotes the number of elements in the intersection set.

[0035] Optionally, in a codebook indication device according to an embodiment of the present disclosure, the port selection indication information includes first information and second information; Here, when the two polarization directions selected by the terminal-side device correspond to the same port, the first information is used to indicate the union of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate ports corresponding to each transmission layer in one polarization direction; or when the two polarization directions selected by the terminal-side device correspond to different ports, the first information is used to indicate the union of ports corresponding to each transmission layer in the two polarization directions, and the second information is used to indicate ports corresponding to each transmission layer in the two polarization directions.

[0036] Optionally, in the codebook indicating device according to one embodiment of the present disclosure, the first information has a size of

number

[0037] Optionally, in accordance with the codebook indicating device according to one embodiment of the present disclosure, the first information is indicated by a bitmap having a size of P bits.

[0038] Optionally, in accordance with the codebook indicating device according to one embodiment of the present disclosure, the second information has a size of

number

number

[0039] Optionally, in a codebook indicating device according to an embodiment of the present disclosure, the second information is indicated by a bitmap having a size of K2 bits; Here, K2 denotes the number of elements in the union.

[0040] Optionally, according to an embodiment of the codebook indicating device of the present disclosure, for the l-th transmission layer, the strongest coefficient indicating information is:

number

number

[0041] Optionally, according to an embodiment of the codebook indicating device of the present disclosure, for the l-th transmission layer, the strongest coefficient indicating information is:

number

number

number

number

number

[0042] Optionally, according to an embodiment of the codebook indicating device of the present disclosure, for the l-th transmission layer, the strongest coefficient indicating information is:

number

number

[0043] Optionally, according to the codebook indicating device according to one embodiment of the present disclosure, for the l-th transmission layer, the frequency domain basis vector indicating information is:

number

[0044] Optionally, according to a codebook indicating device according to one embodiment of the present disclosure, for the l-th transmission layer, the frequency domain basis vector indicating information is indicated by a bitmap bitmap having a size of 2N-1.

[0045] Optionally, according to the codebook indicating device according to one embodiment of the present disclosure, for the l-th transmission layer, the frequency domain basis vector indicating information is:

number

number

number

[0046] Optionally, according to the codebook indicating device according to an embodiment of the present disclosure, for the l-th transmission layer, the frequency domain basis vector indicating information includes a bitmap bitmap and a bitmap bitmap each having a size of N-1 bits.

number

number

[0047] Optionally, according to the codebook indicating device according to one embodiment of the present disclosure, for the l-th transmission layer, the frequency domain basis vector indicating information is:

number

[0048] Optionally, according to a codebook indicating device according to one embodiment of the present disclosure, for the l-th transmission layer, the frequency domain basis vector indicating information is indicated by a bitmap bitmap having a size of N bits.

[0049] Optionally, in a codebook indicating device according to an embodiment of the present disclosure, the frequency domain basis vector indicating information includes third information and fourth information; Here, the third information is used to indicate a product set of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate the remaining frequency domain basis vectors other than the product set among the frequency domain basis vectors corresponding to each transmission layer.

[0050] Optionally, in a codebook indicating device according to an embodiment of the present disclosure, the frequency domain basis vector indicating information includes third information and fourth information; Here, the third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate frequency domain basis vectors corresponding to each transmission layer, respectively.

[0051] In a third aspect, embodiments of the present disclosure provide a method for manufacturing a pharmaceutical composition comprising: The method includes: providing a transmitting module for transmitting codebook indication information to a network side device; and providing the codebook indication information to at least one transmission layer; port selection instruction information; Strongest coefficient indication information; and a frequency domain basis vector indication information.

[0052] In a fourth aspect, an embodiment of the present disclosure further provides a processor-readable storage medium having stored thereon a computer program for causing a processor to execute steps in the codebook instruction method according to the first aspect described above. [Effects of the Invention]

[0053] The codebook indication method, device, and storage medium according to the embodiments of the present disclosure can reduce the feedback overhead of some port indications, the feedback overhead of the strongest coefficient indication, and the overhead of frequency domain basis vector indication by instructing at least one of the port selection, the strongest coefficient of the combination coefficient matrix, and the frequency domain basis vector of at least one transmission layer, compared to conventional independent instructions for each layer. [Brief explanation of the drawings]

[0054] In order to more clearly describe the embodiments of the present disclosure or the technical solutions in the prior art, the drawings necessary for describing the embodiments or the prior art will be briefly described below. Of course, the drawings in the following description are some embodiments of the present disclosure, and those skilled in the art can further obtain other drawings based on these drawings without creative work. [Figure 1] 1 is a flowchart of a codebook instruction method according to an embodiment of the present disclosure. [Figure 2] FIG. 1 is a first schematic diagram of a port selection instruction method according to an embodiment of the present disclosure. [Figure 3]FIG. 2 is a second schematic diagram of a port selection instruction method according to an embodiment of the present disclosure. [Figure 4] 1 is a first schematic diagram of the structure of a codebook instruction device according to an embodiment of the present disclosure; [Figure 5] FIG. 2 is a second schematic diagram of the structure of a codebook instruction device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0055] The term "and / or" in the embodiments of the present disclosure describes a relation between related objects and indicates that three types of relations may exist. For example, A and / or B indicates three cases: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " usually indicates that the related objects before and after it are in an "or" relation.

[0056] The term "plurality" in the embodiments of the present disclosure means two or more than two, and other quantifiers of similar meaning.

[0057] Hereinafter, the technical solutions in the embodiments of the present disclosure will be clearly and completely described with reference to the drawings in the embodiments of the present disclosure. Of course, the described embodiments are only some embodiments of the present disclosure, and are not all embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present disclosure.

[0058] The embodiments of the present disclosure provide a codebook indication method and apparatus, which realizes indication of information related to the codebook of at least one transmission layer, thereby reducing indication overhead and feedback overhead.

[0059] Here, the method and the apparatus are based on the concept of the same application, and the principles for solving the problems of the method and the apparatus are similar, so the implementations of the apparatus and the method can refer to each other, and the overlapping points will not be described.

[0060] The technical solutions according to the embodiments of the present disclosure are applicable to various systems, particularly 5G systems. For example, applicable systems include a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a worldwide interoperability for microwave access (WiMAX) system, and a 5G New Radio (NR) system. Each of these various systems includes a terminal-side device and a network-side device. The system may also include a core network portion such as an Evolved Packet System (EPS) or a 5G system (5GS).

[0061] For Type II codebooks, the codebook structure is W = W1W2W f H and the strongest coefficient indication (SCI) in W2 can adopt different SCI methods for different rank values.

[0062] For example, if Rank=1,

number

number

[0063] In response to a frequency-domain basis vector selection instruction for a Type II codebook, the UE may first perform a global phase rotation on each frequency-domain basis vector, before instructing the UE to report the selected frequency-domain basis vector, so that the index of the frequency-domain basis vector corresponding to the strongest coefficient is 0 (assuming that the index numbers of the candidate frequency-domain basis vectors are 0, 1, ..., N-1).

[0064] For example, for the lth layer, the phase rotation matrix is ​​given as follows:

number

number

number

number

number

number

[0065] According to the size N3 of the PMI subband, the frequency domain basis vectors are also specified in two ways.

[0066] If N3<=19,

number

number

number

number

[0067] FIG. 1 is a flowchart of a codebook indication method according to an embodiment of the present disclosure. As shown in FIG. 1, the method includes the following step 100. In step 100, codebook indication information is transmitted to a network-side device, and the codebook indication information includes at least one of port selection indication information, strongest coefficient indication information, and frequency domain basis vector indication information.

[0068] As an option, the structure of the port selection codebook is W = W1W2W f H where W1 represents a port selection matrix, W2 represents a combination coefficient matrix, and in order to reduce feedback overhead, it is necessary to indicate the position where the strongest coefficient with the maximum width of one coefficient exists. W f represents a compressed frequency domain basis vector matrix. For the l-th transmission layer, the UE can select M l <N frequency domain basis vectors from N.

[0069] Specifically, for the l-th transmission layer, the port selection codebook may be W = W1W2W f H where P represents the number of CSI-RS ports set by the network side for the terminal side device, K

Number

[0070] Specifically, an embodiment of the present disclosure provides a method for reporting a port selection instruction, a strongest coefficient instruction, and a frequency domain basis vector selection instruction for a port selection codebook when rank>=1. The terminal side device reports to the network side based on one or more pieces of information among the determined port selection, the position of the strongest coefficient, and the selected frequency domain basis vector. The network side determines a data transmission precoding W based on one or more of the port selection instruction, SCI, and frequency domain basis vector instruction information reported by the terminal side device.

[0071] Specifically, the terminal side device may send codebook indication information to the network side device, and the codebook indication information may include port selection indication information of at least one port selection matrix of a transmission layer; Specifically, the terminal side device may send codebook indication information to the network side device, and the codebook indication information may include strongest coefficient indication information of a combination coefficient matrix of at least one transmission layer; Specifically, the terminal side device may send codebook indication information to the network side device, and the codebook indication information may include frequency domain basis vector indication information of a compressed frequency domain basis vector matrix of at least one transmission layer; Specifically, the terminal side device may send codebook indication information to the network side device, and the codebook indication information may include: port selection instruction information; Strongest coefficient indication information; and frequency domain basis vector indication information.

[0072] Optionally, the terminal side equipment may be referred to as a terminal or terminal equipment.

[0073] Optionally, the network side device may be referred to as a network side or a network device.

[0074] The codebook indication method according to an embodiment of the present disclosure reduces the feedback overhead of some port indications, the feedback overhead of the strongest coefficient indication, and the overhead of the frequency domain basis vector indication by indicating at least one of the port selection of at least one transmission layer, the strongest coefficient of the combination coefficient matrix, and the frequency domain basis vector, compared with the conventional independent indication for each layer.

[0075] Optionally, the port selection indication information includes first information and second information. Here, when two polarization directions selected by the terminal-side device correspond to the same port, the first information is used to indicate the product set of the ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in one polarization direction, or when two polarization directions selected by the terminal-side device correspond to different ports, the first information is used to indicate the product set of the ports corresponding to each transmission layer in two polarization directions, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in two polarization directions.

[0076] Specifically, the port selection method when rank = 1 may select the same port for two polarization directions, that is, the ports at the same position in two polarization directions, and freely select K l,1 / 2 ports in each polarization direction, and indicate the ports selected by the terminal according to the combination number. If the network side sets P ports for the terminal, the terminal selects K l,1 <P ports and

Number

[0077] Specifically, the network side device may transmit the beamformed CSI-RS to the terminal side device, and the terminal side device may determine one or more pieces of information among a selected port, a position of the strongest coefficient, and a selected frequency domain basis vector based on the information set by the network side device and the received beamformed CSI-RS; Specifically, the network side device notifies the terminal side device of the number N of frequency domain basis vectors, the number Kl,1 of antenna ports selected by the terminal, and the number M of frequency domain basis vectors selected by the terminal. l One or more of the following may be set.

[0078] Optionally, if the ports selected by the terminal side device for each transmission layer are not exactly the same and the network side device configures X CSI-RS ports for the terminal side device, P may be set to X (different ports selected for the two polarization directions) or P may be set to X / 2 (the same port selected for the two polarization directions). Optionally, P l ' may indicate the number of ports selected by the terminal side device for the lth layer transmission layer, and P l ' may be set by the network side device or selected and reported by the terminal side device. For the l-th layer, the terminal l ' (different ports were selected for the two polarization directions) or

number

number

number

[0079] Optionally, if Rank>1, the terminal side device may report codebook indication information in two parts, so that each layer indicates the port selected.

[0080] Specifically, the terminal device can indicate the port selected by each layer in the following manner. The terminal side device can report the codebook indication information in two parts, the first part reporting the first information of each layer in one or two polarization directions, and the second part reporting the second information of each layer in one or two polarization directions.

[0081] Here, the first information may be a set intersection of the ports selected by each transmission layer, and the second information is the remaining ports selected by each transmission layer other than the set intersection.

[0082] Specifically, when two polarization directions selected by a terminal device correspond to the same port, the first information may be used to indicate a product set of ports corresponding to each transmission layer in one polarization direction, and the second information may be used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in one polarization direction. Specifically, when the two polarization directions selected by the terminal side device correspond to different ports, the first information may be used to indicate a product set of ports corresponding to each transmission layer in the two polarization directions, and the second information may be used to indicate the remaining ports other than the product set among the ports respectively corresponding to each transmission layer in the two polarization directions.

[0083] The port selection instruction method according to an embodiment of the present disclosure reports codebook instruction information in two parts so that each layer indicates the selected port, which can reduce the feedback overhead of some port instructions compared with the conventional independent instructions for each layer.

[0084] Optionally, the first information has a size

number

[0085] Specifically, the first information may be a product set of ports selected by each transmission layer, and the second information is the remaining ports selected by each transmission layer other than the product set, where the first information is the number of combinations

number

[0086] When reporting by using the number of combinations, the terminal device:

number

[0087] Specifically, the size of K is

number

number

number

[0088] Optionally, the first information is indicated by a bitmap having a size of P bits; Here, if the two polarization directions selected by the terminal-side device correspond to the same port, then P=X / 2; if the two polarization directions selected by the terminal-side device correspond to different ports, then P=X, where X is the number of ports set by the network-side device for the terminal-side device.

[0089] Specifically, the first information may be the intersection of the ports selected by each transmission layer, and the second information is the remaining ports selected by each transmission layer other than the intersection, where the first information can indicate the intersection of the ports selected by each layer using a bitmap with a size of P, where K indicates the number of elements in the intersection of the ports selected by each layer.

[0090] Specifically, the size of K is

number

number

number

[0091] Optionally, the second information has a magnitude of

number

number

[0092] Specifically, the first information may be a product set of ports selected by each transmission layer, and the second information is the remaining ports selected by each transmission layer other than the product set, where the second information is the number of combinations

number

[0093] Specifically, when the second information is reported using the number of combinations:

number

[0094] Specifically, the size of K is determined by the terminal device.

number

number

number

[0095] Optionally, the second information is indicated by a bitmap having a size of PK bits; Here, if the two polarization directions selected by the terminal side device correspond to the same port, then P=X / 2; if the two polarization directions selected by the terminal side device correspond to different ports, then P=X; and K indicates the number of elements in the product set.

[0096] Specifically, the first information may be the intersection of the ports selected by each transmission layer, and the second information may be the remaining ports selected by each transmission layer other than the intersection, where the second information may indicate the remaining ports other than the ports in the intersection among the ports selected by one transmission layer using a bitmap of size PK.

[0097] Specifically, the size of K is determined by the terminal device.

number

number

number

[0098] For example, the first information may be a set of intersections of the ports selected by each transmission layer, and the second information may be the remaining ports selected by each transmission layer other than the set of intersections.

[0099] If the base station configures a CSI-RS resource including X=32 ports for the UE, performs two-layer data transmission with rank=2, and the ports selected in the two polarization directions are the same, i.e., the positions of the ports selected in the two polarization directions are the same, then P=X / 2=16. If each layer selects 16 and 12 ports in the two polarization directions, respectively, i.e., P1'=16 and P2'=12, and these are reported by the UE to the base station, then K1,1=8 and K2,1=6.

[0100] FIG. 2 is a first schematic diagram of a port selection instruction method according to an embodiment of the present disclosure. As shown in FIG. 2, the distribution of ports selected by terminals in one polarization direction in two-layer transmission is shown. The dots corresponding to the ports in the diagram indicate that the ports are selected, and if not, they indicate that the ports are not selected. Each transmission layer has a combination number

number

[0101] Here, the terminal indicates the port selected by layer 2 by reporting a bitmap with P=16 bits as shown in Table 1. In the table, 0 indicates that the port is not selected, and 1 indicates that the port is selected.

[0102] Table 1: Intersection of ports selected for Layer 2 transmission [Table 1] As can be seen from the table, the element of the intersection set selected by the two-layer transmission is 6, that is, the two layers select six identical ports, and then

number

[0103] If four-layer data transmission with rank=4 is performed and the ports selected in the two polarization directions are the same, that is, the positions of the ports selected in the two polarization directions are the same, then P=X / 2=16. If the first and second layers each select 16 ports in the two polarization directions, and the third and fourth layers each select 12 ports, that is, P1'=P2'=16 and P3'=P4'=8, and these are reported by the UE to the base station, then K1,1=K2,1=8, K3,1=K 4,1 =4.

[0104] If each layer is instructed using P=16 bits and rank=4, the required port instruction overhead is 64 bits. Figure 3 is a schematic diagram of a port selection instruction method according to an embodiment of the present disclosure, and the distribution of ports selected by layer 4 transmission is shown in Figure 3. As shown in Figure 3, this is a schematic diagram of the distribution of ports selected by a terminal in one polarization direction in layer 4 transmission, and as shown in Table 2, the terminal indicates the intersection of ports selected by layer 4 by reporting a bitmap with P=16 bits.

[0105] Table 2: Intersection of ports selected for Layer 4 transmission [Table 2] As can be seen from Table 2, 4 layers The element of the intersection set selected by the transmission is 4, that is, the four layers select four identical ports, and then respectively:

number

number

[0106] Optionally, the port selection instruction information includes first information and second information; Here, when the two polarization directions selected by the terminal-side device correspond to the same port, the first information is used to indicate the union of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate ports corresponding to each transmission layer in one polarization direction; or when the two polarization directions selected by the terminal-side device correspond to different ports, the first information is used to indicate the union of ports corresponding to each transmission layer in the two polarization directions, and the second information is used to indicate ports corresponding to each transmission layer in the two polarization directions.

[0107] Optionally, if the terminal side device does not select exactly the same ports for each transmission layer, the network side device may configure X CSI-RS ports for the terminal side device, where P = X (different ports selected for the two polarization directions) or P = X / 2 (the same port selected for the two polarization directions). Optionally, P l' may indicate the number of ports selected by the terminal side device for the lth layer transmission layer, and P l ' may be set by the network side device or selected and reported by the terminal side device. For the l-th layer, the terminal l ' (different ports were selected for the two polarization directions) or

number

number

number

[0108] Optionally, if Rank>1, the terminal side device may report codebook indication information in two parts, so that each layer indicates the port selected.

[0109] Specifically, the terminal device can indicate the port selected by each layer in the following manner. The terminal side device can report the codebook indication information in two parts, the first part reporting the first information of each layer in one or two polarization directions, and the second part reporting the second information of each layer in one or two polarization directions.

[0110] Here, the first information may be a union of the ports selected by each transmission layer, and the second information may indicate the ports selected within the union of one transmission layer.

[0111] Specifically, when two polarization directions selected by a terminal side device correspond to the same port, the first information may be used to indicate a union of ports corresponding to each transmission layer in one polarization direction, and the second information may be used to indicate ports corresponding to each transmission layer in one polarization direction. Specifically, when the two polarization directions selected by the terminal side device correspond to different ports, the first information may be used to indicate the union of the ports corresponding to each transmission layer in the two polarization directions, and the second information may be used to indicate the ports respectively corresponding to each transmission layer in the two polarization directions.

[0112] Optionally, the first information has a size

number

[0113] Optionally, the first information may be a union of ports selected by each transmission layer, and the second information may indicate ports selected within the union of one transmission layer, respectively, where the first information is a combination number.

number

number

[0114] Specifically, the size of K2 is

number

[0115] Optionally, the first information is indicated by a bitmap having a size of P bits; Here, if the two polarization directions selected by the terminal side device correspond to the same port, then P=X / 2, and if the two polarization directions selected by the terminal side device correspond to different ports, then P=X.

[0116] Optionally, the first information may be a union of the ports selected by each transmission layer, and the second information may indicate the ports selected within the union of one transmission layer, respectively, where the first information may indicate the union of the ports selected by each layer using a bitmap of size P, where K2 indicates the number of elements in the union of the ports selected by each layer.

[0117] Specifically, the size of K2 is

number

[0118] Optionally, the second information has a magnitude of

number

[0119] Optionally, the first information may be a union of ports selected by each transmission layer, and the second information may indicate ports selected within the union of one transmission layer, respectively, where the second information is a combination number.

number

[0120] Optionally, if the second information is represented by a combination number:

number

[0121] Optionally, the second information is indicated by a bitmap having a size of K2 bits; Here, K2 denotes the number of elements in the union.

[0122] Optionally, the first information may be a union of ports selected by each transmission layer, and the second information may indicate the ports selected within the union of one transmission layer, respectively, where the second information may indicate the ports selected within the union of one transmission layer using a bitmap of size K2.

[0123] For example, the first information is a union of the ports selected by each layer, and the second information indicates the ports selected within the union for one transmission layer, respectively.

[0124] If four-layer data transmission with rank=4 is performed and the ports selected in the two polarization directions are the same, i.e., the positions of the ports selected in the two polarization directions are the same, then P=X / 2=16. If layers 1 and 2 each select 16 ports in the two polarization directions, and layers 3 and 4 each select 12 ports, i.e., P1'=P2'=16 and P3'=P4'=8, and these are reported by the UE to the base station, then K1,1=K2,1=8 and K3,1=K4,1=4. The union of the ports selected by each layer is shown in Table 3 below.

[0125] Table 3: Layer 4 Transmission for Selected Ports union [Table 3] As can be seen from Table 3, 4 layers Transmission selected union The number of elements is 4, that is, these four layers have four identical ports, then, respectively,

number

number

[0126] The port instruction method according to the embodiment of the present disclosure can reduce 10 bits compared with independent instructions for each layer, effectively saving instruction overhead.

[0127] Optionally, for the l-th transmission layer, the strongest coefficient indication information

number

number

[0128] Optionally, in the case of the strongest coefficient indication when Rank ≥ 1, the terminal side device, for the l-th transmission layer,

number

number

[0129] Specifically, for the l-th transmission layer, suppose the number of ports selected by the terminal is Kl,1 and the number of selected non-zero coefficients is K l,0 If Kl,1 and K l,0 may be set by the network side device or may be reported to the network side device by the terminal side device.

[0130] Specifically, the network side provides the terminal with at least the number N of frequency domain basis vectors, the number Kl,1 of antenna ports selected by the terminal, and the number M of frequency domain basis vectors selected by the terminal. l One or more of the following was set.

[0131] For the l-th transmission layer, W f When is turned off, that is, the compressed frequency domain basis vector matrix is ​​M l= 1 frequency domain basis vector, the terminal

number

[0132] Specifically, the strongest coefficient indication method according to the embodiment of the present disclosure when Rank>=1 includes an SCI indication method after phase rotation and an SCI indication method without phase rotation. For Rank>=1, the SCI indication method according to the embodiment of the present disclosure can reduce the feedback overhead of the strongest coefficient indication and the overhead of frequency domain basis vector indication.

[0133] Optionally, for the l-th transmission layer, the strongest coefficient indication information

number

number

number

number

number

[0134] Optionally, in the case of the strongest coefficient indication when Rank ≥ 1, the terminal side device may specify the strongest coefficient indication information for the l-th transmission layer.

number

number

number

number

number

[0135] For the l-th transmission layer, W f is turned off, i.e., the compressed frequency domain basis vector matrix is ​​M l = 1 frequency domain basis vector, the terminal

number

[0136] For the l-th transmission layer, W f is turned on, i.e., the compressed frequency domain basis vector matrix is ​​M l If the signal contains >1 frequency domain basis vector, the terminal

number

[0137] Optionally, for the l-th transmission layer, the strongest coefficient indication information

number

number

[0138] Optionally, in the case of the strongest coefficient indication when Rank ≥ 1, the terminal side device may specify the strongest coefficient indication information for the l-th transmission layer.

number

number

[0139] Specifically, for the lth transmission layer, W f is turned on, i.e., the compressed frequency domain basis vector matrix is ​​M l If the signal contains >1 frequency domain basis vector, the terminal

number

number

[0140] For example, without the SCI indication, if the amplitude and phase of a coefficient are quantified using 3 bits and 4 bits, respectively, then reporting the strongest coefficient requires 7 bits.

[0141] Suppose W f is turned off, i.e., the compressed frequency domain basis vector matrix is ​​M l = 1 frequency-domain basis vector, for the first transmission layer, the number of non-zero coefficients selected by the terminal is K1,0 = 12, the number of non-zero coefficients selected by the second transmission layer is K2,0 = 12, and the terminal

number

number

[0142] Optionally, the terminal side equipment can be

number

number

[0143] The SCI instruction in the embodiment of the present disclosure can reduce the overhead by 1 to 4 bits compared to the conventional technology, that is, can effectively reduce the instruction overhead.

[0144] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information

number

[0145] Optionally, the network side device may configure the number N of frequency domain basis vectors for the terminal side device.

[0146] Specifically, in the case of frequency domain basis vector indication when Rank≧1, for the l-th transmission layer, the magnitude of the frequency domain basis vector indication information is:

number

[0147] Specifically, the network side sets N frequency domain basis vectors for the terminal, and W f When is turned on, for the lth transmission layer, the terminal l >One frequency domain basis vector needs to be selected, and the terminal

number

[0148] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap bitmap of size 2N-1.

[0149] Specifically, in the case of frequency domain basis vector indication when Rank≧1, for the lth transmission layer, the frequency domain basis vector indication information is indicated by a bitmap bitmap whose size is 2N−1.

[0150] Specifically, the network side sets N frequency domain basis vectors for the terminal, and W f When is turned on, for the lth transmission layer, the terminal l >One frequency domain basis vector can be selected, and the terminal indicates the selected frequency domain basis vector using a bitmap of size 2N-1.

[0151] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information

number

number

number

[0152] Specifically, in the case of frequency domain basis vector indication when Rank≧1, for the l-th transmission layer, the frequency domain basis vector indication information is:

number

number

number

[0153] Specifically, the network side sets N frequency domain basis vectors for the terminal, and W f When is turned on, for the lth transmission layer, the terminal l >One frequency domain basis vector can be selected, and the terminal

number

number

[0154] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information is a bitmap bitmap and a bitmap sigma 1-1 bits.

number

number

[0155] Specifically, in the case of frequency domain basis vector indication when Rank≧1, for the l-th transmission layer, the frequency domain basis vector indication information is a bitmap bitmap having a size of N−1 bits and

number

number

[0156] Specifically, the network side sets N frequency domain basis vectors for the terminal, and W f When is turned on, for the lth transmission layer, the terminal l > One frequency domain basis vector can be selected, and the terminal can select a bitmap bitmap and a

number

number

[0157] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information

number

[0158] Specifically, in the case of frequency domain basis vector indication when Rank≧1, for the l-th transmission layer, the magnitude of the frequency domain basis vector indication information is:

number

[0159] Specifically, the network side sets N frequency domain basis vectors for the terminal, and W f When is turned on, for the lth transmission layer, the terminal l >One frequency domain basis vector can be selected, and the terminal

number

[0160] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap bitmap having a size of N bits.

[0161] Specifically, in the case of frequency domain basis vector indication when Rank≧1, for the l-th transmission layer, the frequency domain basis vector indication information is a bitmap with a size of N bits.

[0162] Specifically, the network side sets N frequency domain basis vectors for the terminal, and W f When is turned on, for the lth transmission layer, the terminal l >One frequency domain basis vector can be selected, and the terminal indicates this by reporting a bitmap bitmap whose size is N bits.

[0163] Optionally, if all layers select the same frequency domain basis vectors, the terminal side device may:

number

number

[0164] For example, if the network sets N=4 frequency domain basis vectors for the terminal and W f When turned on, for the lth transmission layer, the terminal l = 2 frequency domain basis vectors must be selected, and the terminal

number

[0165] For example, the terminal

number

number

number

[0166] For example, the terminal

number

[0167] For example, if the frequency domain basis vectors selected by all layers are the same, the terminal

number

number

number

[0168] For example, if rank=4, a typical frequency domain basis vector designation is

number

number

number

number

[0169] Optionally, the frequency domain basis vector indication information includes third information and fourth information; Here, the third information is used to indicate a product set of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate the remaining frequency domain basis vectors other than the product set among the frequency domain basis vectors corresponding to each transmission layer.

[0170] Optionally, the frequency domain basis vector may be reported and indicated in two parts, and the indication method is the same as the method of reporting and indicating in two parts described in the port selection indication.

[0171] Optionally, when the third information is used to indicate a product set of frequency domain basis vectors corresponding to each transmission layer and the fourth information is used to indicate remaining frequency domain basis vectors other than the product set among the frequency domain basis vectors corresponding to each transmission layer, the third information may be

number

[0172] Optionally, when the third information is used to indicate a product set of frequency domain basis vectors corresponding to each transmission layer and the fourth information is used to indicate the remaining frequency domain basis vectors other than the product set among the frequency domain basis vectors corresponding to each transmission layer, the third information may be indicated by a bitmap having a size of Z bits, where the parameter Z indicates the number of candidate frequency domain basis vectors.

[0173] Optionally, when the third information is used to indicate a product set of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate remaining frequency domain basis vectors other than the product set among the frequency domain basis vectors corresponding to each transmission layer, the fourth information may have a magnitude of

number

number

[0174] Optionally, when the third information is used to indicate a product set of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate the remaining frequency domain basis vectors other than the product set among the frequency domain basis vectors corresponding to each transmission layer, the fourth information may be indicated by a bitmap having a size of ZY bits, where parameter Z indicates the number of candidate frequency domain basis vectors, and parameter Y indicates a set of frequency domain basis vectors.

[0175] Optionally, the frequency domain basis vector indication information includes third information and fourth information; Here, the third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate frequency domain basis vectors corresponding to each transmission layer, respectively.

[0176] Here, the third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate frequency domain basis vectors corresponding to each transmission layer, respectively. The third information has a magnitude of

number

[0177] Here, the third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate frequency domain basis vectors corresponding to each transmission layer, respectively. The third information is indicated by a bitmap having a size of Z bits, where the parameter Z indicates the number of candidate frequency domain basis vectors.

[0178] Here, when the third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer and the fourth information is used to indicate frequency domain basis vectors corresponding to each transmission layer, the fourth information may be a magnitude

number

[0179] Here, when the third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer and the fourth information is used to indicate frequency domain basis vectors respectively corresponding to each transmission layer, the fourth information may be indicated by a bitmap having a size of Y bits, where Y indicates the set of frequency domain basis vectors.

[0180] Specifically, in the embodiments of the present disclosure, when instructing frequency domain basis vector selection with Rank ≥ 1, two methods can be used. Method 1 is to instruct frequency domain basis vectors for two situations, that is, with and without phase rotation, based on N frequency domain basis vectors set by the network side. Method 2 can also adopt a port selection method, that is, to report in two parts and indicate the frequency domain basis vectors selected by each layer.

[0181] For rank >= 1, the SCI indication method and frequency domain basis vector indication method according to each embodiment of the present disclosure can reduce the feedback overhead of the strongest coefficient indication and the overhead of frequency domain basis vector indication.

[0182] A codebook instruction method according to an embodiment of the present disclosure can reduce the feedback overhead of some port instructions, the feedback overhead of the strongest coefficient instruction, and the overhead of frequency domain basis vector instruction by instructing at least one of the port selection, the strongest coefficient of the combination coefficient matrix, and the frequency domain basis vector of at least one transmission layer, compared to conventional independent instructions for each layer.

[0183] A terminal device according to an embodiment of the present disclosure may be a device providing voice and / or data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem. Different systems may refer to terminal devices by different names. For example, in a 5G system, terminal devices may be referred to as user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (also called a "cellular" phone) or a computer with a mobile terminal device, e.g., a portable, pocket-sized, handheld, computer-integrated, or vehicle-mounted mobile device, which exchanges voice and / or data with the radio access network. Examples of such devices include a personal communication service (PCS) phone, a cordless phone, a session initiated protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and other devices. A wireless terminal device may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, or a user device, and is not limited to these terms in the embodiments of the present disclosure.

[0184] The network equipment according to an embodiment of the present disclosure may be a base station that can include multiple cells serving terminals. Depending on a specific application scenario, the base station may also be called an access point, a device that communicates with wireless terminal devices over one or more sectors over an air interface in an access network, or other names. The network equipment may be used as a router between the wireless terminal devices and the rest of the access network to exchange received air frames and Internet Protocol (IP) packets with each other, where the rest of the access network may include an Internet Protocol (IP) communication network. The network equipment may also coordinate attribute management of the air interface. For example, the network device according to the embodiment of the present disclosure may be a network device (BTS: Base Transceiver Station) in Global System for Mobile communications (GSM (registered trademark)) or Code Division Multiple Access (CDMA), a network device (Node B) in Wide-band Code Division Multiple Access (WCDMA (registered trademark), an evolved network device (eNB or e-Node B: evolutionary Node B) in a Long Term Evolution (LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a Home evolved Node B (HeNB), a relay node, a home base station (femto), a pico base station (pico), or the like, and is not limited to these in the embodiment of the present disclosure.In some network architectures, the network equipment may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may be located geographically separated.

[0185] Between the network device and the terminal device, multi-input multi-output (MIMO) transmission can be performed using one or more antennas, and the MIMO transmission may be single user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). According to the type and number of antenna combinations, the MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and may be diversity transmission, precoding transmission, beam focusing transmission, etc.

[0186] FIG. 4 is a first schematic diagram of the structure of a codebook instruction device according to an embodiment of the present disclosure. As shown in FIG. 4, the codebook instruction device includes a memory, a transceiver, and a processor, where: The memory is used to store a computer program, and the transceiver is used to transmit and receive data under the control of the processor, the processor reading the computer program in the memory; To perform an operation of sending codebook indication information to a network side device, the codebook indication information being transmitted to at least one transmission layer: port selection instruction information; Strongest coefficient indication information; and frequency domain basis vector indication information.

[0187] A codebook indication device according to an embodiment of the present disclosure can reduce the feedback overhead of some port indications, the feedback overhead of the strongest coefficient indication, and the overhead of frequency domain basis vector indication by instructing at least one of the port selection, the strongest coefficient of the combination coefficient matrix, and the frequency domain basis vector of at least one transmission layer, compared to conventional independent instructions for each layer.

[0188] 4, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits, such as one or more processors, represented by processor 410, and memory, represented by memory 420. The bus architecture may also link together various other circuits, such as peripheral devices, voltage regulators, and power management circuits, all of which are well known in the art and will not be further described herein. The bus interface provides an interface. The transceiver 400 may be multiple elements, i.e., includes a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media. These transmission media include wireless channels, wired channels, optical cables, and the like. For different user devices, the user interface 430 may be an interface connectable externally or internally to the required devices, including, but not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0189] The processor 410 manages the bus architecture and general processing, and the memory 420 may store data used by the processor 400 in performing operations.

[0190] Optionally, the processor 410 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor may employ a multi-core architecture.

[0191] The processor is used to execute any of the methods according to the embodiments of the present disclosure in accordance with the executable instructions obtained by calling a computer program stored in the memory, and the processor and the memory may be physically separated.

[0192] Optionally, the port selection instruction information includes first information and second information; Here, when the two polarization directions selected by the terminal side device correspond to the same port, the first information is used to indicate a product set of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in one polarization direction, or When the two polarization directions selected by the terminal side device correspond to different ports, the first information is used to indicate a product set of ports corresponding to each transmission layer in the two polarization directions, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in the two polarization directions.

[0193] Optionally, the first information has a size

number

[0194] Optionally, the first information is indicated by a bitmap having a size of P bits; Here, if the two polarization directions selected by the terminal side device correspond to the same port, then P=X / 2, and if the two polarization directions selected by the terminal side device correspond to different ports, then P=X.

[0195] Optionally, the second information has a magnitude of

number

number

[0196] Optionally, the second information is indicated by a bitmap having a size of PK bits; Here, K denotes the number of elements in the intersection set.

[0197] Optionally, the port selection instruction information includes first information and second information; Here, when the two polarization directions selected by the terminal-side device correspond to the same port, the first information is used to indicate the union of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate ports corresponding to each transmission layer in one polarization direction; or when the two polarization directions selected by the terminal-side device correspond to different ports, the first information is used to indicate the union of ports corresponding to each transmission layer in the two polarization directions, and the second information is used to indicate ports corresponding to each transmission layer in the two polarization directions.

[0198] Optionally, the first information has a size

number

[0199] Optionally, the first information is indicated by a bitmap having a size of P bits.

[0200] Optionally, the second information has a magnitude of

number

[0201] Optionally, the second information is indicated by a bitmap having a size of K2 bits; Here, K2 denotes the number of elements in the union.

[0202] Optionally, for the l-th transmission layer, the strongest coefficient indication information is

number

number

[0203] Optionally, for the l-th transmission layer, the strongest coefficient indication information

number

number

number

number

number

[0204] Optionally, for the l-th transmission layer, the strongest coefficient indication information

number

number

[0205] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information

number

[0206] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap bitmap of size 2N-1.

[0207] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information

number

number

number

[0208] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information is a bitmap bitmap and a bitmap sigma 1-1 bits.

number

number

[0209] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information

number

[0210] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap bitmap having a size of N bits.

[0211] Optionally, the frequency domain basis vector indication information includes third information and fourth information; Here, the third information is used to indicate a product set of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate the remaining frequency domain basis vectors other than the product set among the frequency domain basis vectors corresponding to each transmission layer.

[0212] Optionally, the frequency domain basis vector indication information includes third information and fourth information; Here, the third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate frequency domain basis vectors corresponding to each transmission layer, respectively.

[0213] A codebook indication device according to an embodiment of the present disclosure can reduce the feedback overhead of some port indications, the feedback overhead of the strongest coefficient indication, and the overhead of frequency domain basis vector indication by instructing at least one of the port selection, the strongest coefficient of the combination coefficient matrix, and the frequency domain basis vector of at least one transmission layer, compared to conventional independent instructions for each layer.

[0214] FIG. 5 is a second schematic diagram of the structure of a codebook indicating device according to an embodiment of the present disclosure. As shown in FIG. 5, the codebook indicating device includes: a sending module 510, where: The sending module 510 is used for sending codebook indication information to a network side device, and the codebook indication information is sent to at least one transmission layer: port selection instruction information; Strongest coefficient indication information; and frequency domain basis vector indication information.

[0215] Specifically, the codebook indication device can send codebook indication information to a network side device through a sending module 510, and the codebook indication information can be transmitted to at least one transmission layer: port selection instruction information; Strongest coefficient indication information; and frequency domain basis vector indication information.

[0216] A codebook indication device according to an embodiment of the present disclosure can reduce the feedback overhead of some port indications, the feedback overhead of the strongest coefficient indication, and the overhead of frequency domain basis vector indication by instructing at least one of the port selection, the strongest coefficient of the combination coefficient matrix, and the frequency domain basis vector of at least one transmission layer, compared to conventional independent instructions for each layer.

[0217] It should be noted that the above-described apparatus according to the embodiment of the present disclosure can implement all the method steps implemented by the above-described method embodiments and can achieve the same technical effects, and details of the same parts and beneficial effects of this embodiment as those of the above-described method embodiments will be omitted here.

[0218] Optionally, the port selection instruction information includes first information and second information; Here, when the two polarization directions selected by the terminal side device correspond to the same port, the first information is used to indicate a product set of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in one polarization direction, or When the two polarization directions selected by the terminal side device correspond to different ports, the first information is used to indicate a product set of ports corresponding to each transmission layer in the two polarization directions, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in the two polarization directions.

[0219] Optionally, the first information has a size

number

[0220] Optionally, the first information is indicated by a bitmap having a size of P bits; Here, if the two polarization directions selected by the terminal side device correspond to the same port, then P=X / 2, and if the two polarization directions selected by the terminal side device correspond to different ports, then P=X.

[0221] Optionally, the second information has a magnitude of

number

number

[0222] Optionally, the second information is indicated by a bitmap whose size is PK bits.

[0223] Optionally, the port selection instruction information includes first information and second information; Here, when the two polarization directions selected by the terminal-side device correspond to the same port, the first information is used to indicate the union of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate ports corresponding to each transmission layer in one polarization direction; or when the two polarization directions selected by the terminal-side device correspond to different ports, the first information is used to indicate the union of ports corresponding to each transmission layer in the two polarization directions, and the second information is used to indicate ports corresponding to each transmission layer in the two polarization directions.

[0224] Optionally, the first information has a size

number

[0225] Optionally, the first information is indicated by a bitmap having a size of P bits.

[0226] Optionally, the second information has a magnitude of

number

number

[0227] Optionally, the second information is indicated by a bitmap having a size of K2 bits.

[0228] Optionally, for the l-th transmission layer, the strongest coefficient indication information

number

number

[0229] Optionally, for the l-th transmission layer, the strongest coefficient indication information

number

number

number

number

number

[0230] Optionally, for the l-th transmission layer, the strongest coefficient indication information

number

number

[0231] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information

number

[0232] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap bitmap of size 2N-1.

[0233] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information

number

number

number

[0234] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information is a bitmap bitmap and a bitmap sigma 1-1 bits.

number

number

[0235] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information

number

[0236] Optionally, for the l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap bitmap having a size of N bits.

[0237] Optionally, the frequency domain basis vector indication information includes third information and fourth information; Here, the third information is used to indicate a product set of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate the remaining frequency domain basis vectors other than the product set among the frequency domain basis vectors corresponding to each transmission layer.

[0238] Optionally, the frequency domain basis vector indication information includes third information and fourth information; Here, the third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate frequency domain basis vectors corresponding to each transmission layer, respectively.

[0239] A codebook indication device according to an embodiment of the present disclosure can reduce the feedback overhead of some port indications, the feedback overhead of the strongest coefficient indication, and the overhead of frequency domain basis vector indication by instructing at least one of the port selection, the strongest coefficient of the combination coefficient matrix, and the frequency domain basis vector of at least one transmission layer, compared to conventional independent instructions for each layer.

[0240] In the embodiments of the present disclosure, the division into units is merely a schematic and logical functional division, and other division methods may be used in actual implementation. In addition, in each embodiment of the present disclosure, each functional unit may be integrated into a single processing unit, or each unit may exist physically alone, or two or more units may be integrated into a single unit. The integrated units may be implemented in the form of hardware or software functional units.

[0241] The above-mentioned integrated units can be realized in the form of software functional units and stored in a processor-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present disclosure, its essence, the portion contributing to the prior art, or all or part of the technical means may be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions that cause a computer device (which may be a personal computer, a server, a network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present disclosure. The storage medium includes various media capable of storing program code, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0242] It should be noted that the above-described apparatus according to the embodiment of the present disclosure can implement all the method steps implemented by the above-described method embodiments and can achieve the same technical effects, and therefore details of the same parts and beneficial effects of this embodiment as those of the above-described method embodiments will be omitted here.

[0243] In another aspect, an embodiment of the present disclosure further provides a processor-readable storage medium having stored thereon a computer program for causing a processor to execute a method according to each of the above embodiments, the method comprising: sending codebook indication information to a network side device, wherein the codebook indication information includes: port selection instruction information; Strongest coefficient indication information; and frequency domain basis vector indication information.

[0244] The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., flexible disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drives (SSD)), etc.

[0245] As will be appreciated by those skilled in the art, embodiments of the present disclosure may be provided as a method, a system, or a computer program product. Thus, the present disclosure may employ an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. The present disclosure may also employ the form of a computer program product embodied in one or more computer-usable storage media (including, but not limited to, magnetic disk memory, optical memory, etc.) containing computer-usable program code.

[0246] The present disclosure will be described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions are provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to create a machine, and the instructions, executed by the processor of the computer or other programmable data processing device, generate means for implementing the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0247] These processor-executable instructions may be stored in a processor-readable memory that causes a computer or other programmable data processing device to operate in a particular manner to produce an article of manufacture that includes instruction means, the instruction means implementing a function or functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0248] These processor-executable instructions may be loaded into a computer or other programmable data processing device and cause the computer or other programmable device to perform a series of operational steps to generate a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0249] Of course, those skilled in the art can make various changes and modifications to the present disclosure without departing from the scope of the present disclosure. Thus, if these changes and modifications of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure also intends to include these changes and modifications.

Claims

1. transmitting codebook indication information to a network side device, the codebook indication information including: port selection instruction information; Strongest coefficient indication information; and frequency domain basis vector indication information; For the l-th transmission layer, the strongest coefficient indication information is [Equation 1] Bit information and [Equation 2] containing information of bits, [Equation 3] bit information and [Equation 4] The K bits of information are used to jointly indicate the target strongest coefficient of transmission layer l among the non-zero coefficients, where ｌ，１ is the number of ports selected by the terminal device, [Equation 5] is used to indicate the frequency domain basis vector corresponding to the target strongest coefficient, and ｌ is the number of frequency domain basis vectors selected by the terminal side device, or For the l-th transmission layer, the strongest coefficient indication information is [Equation 6] containing information of bits, [Equation 7] The information of the K bits is used to indicate the target strongest coefficient of the transmission layer l among the non-zero coefficients, where ｌ，１ is the number of ports selected by the terminal device, Here, the codebook specifying method is characterized in that l is an integer greater than 0.

2. the port selection instruction information includes first information and second information, Here, when the two polarization directions selected by the terminal side device correspond to the same port, the first information is used to indicate a product set of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in one polarization direction, or When the two polarization directions selected by the terminal side device correspond to different ports, the first information is used to indicate a product set of ports corresponding to each transmission layer in the two polarization directions, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in the two polarization directions.

2. The codebook instruction method according to claim 1.

3. The first information has a size [Equation 8] the first information is indicated by a combination number of P bits, or the first information is indicated by a bitmap having a size of P bits; Here, if the two polarization directions selected by the terminal-side device correspond to the same port, P = X / 2; if the two polarization directions selected by the terminal-side device correspond to different ports, P = X, where X is the number of ports set by the network-side device for the terminal-side device, and K is the number of elements in the product set; The second information has a size [Equation 9] the second information is indicated by a combination number of bits, or the second information is indicated by a bitmap having a size of P-K bits; Here, if the two polarization directions selected by the terminal side device correspond to the same port, [Equation 10] and when the two polarization directions selected by the terminal device correspond to different ports, K ｌ，１ =P ｌ ' and P ｌ ' indicates the number of ports selected by the terminal side device for the l-th layer.

3. The codebook instruction method according to claim 2.

4. the port selection instruction information includes first information and second information, Here, when two polarization directions selected by the terminal-side device correspond to the same port, the first information is used to indicate a union of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate ports corresponding to each transmission layer in one polarization direction, or when two polarization directions selected by the terminal-side device correspond to different ports, the first information is used to indicate a union of ports corresponding to each transmission layer in two polarization directions, and the second information is used to indicate ports corresponding to each transmission layer in two polarization directions.

2. The codebook instruction method according to claim 1.

5. The first information has a size [0011] the first information is indicated by a combination number of P bits, or the first information is indicated by a bitmap having a size of P bits; Here, K ２ denotes the number of elements in the union, The second information has a size [0012] the second information is indicated by a combination number of K2 bits, or the second information is indicated by a bitmap having a size of K2 bits; Here, the K ２ The size of ' is the number of ports selected by the terminal device.

5. The codebook instruction method according to claim 4.

6. the frequency domain basis vector indication information includes third information and fourth information; wherein the third information is used to indicate a product set of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate remaining frequency domain basis vectors other than the product set among the frequency domain basis vectors corresponding to each transmission layer, or The third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer, and the fourth information is used to indicate frequency domain basis vectors corresponding to each transmission layer.

2. The codebook instruction method according to claim 1.

7. A transmitting module is used to transmit codebook indication information to a network side device, and the codebook indication information includes: port selection instruction information; Strongest coefficient indication information; and frequency domain basis vector indication information; For the l-th transmission layer, the strongest coefficient indication information is [0013] Bit information and [0014] containing information of bits, [Equation 15] bit information and [0016] The K bits of information are used to jointly indicate the target strongest coefficient of transmission layer l among the non-zero coefficients, where ｌ，１ is the number of ports selected by the terminal device, [Equation 17] is used to indicate the frequency domain basis vector corresponding to the target strongest coefficient, and ｌ is the number of frequency domain basis vectors selected by the terminal side device, or For the l-th transmission layer, the strongest coefficient indication information is [Equation 18] containing information of bits, [Equation 19] The information of the K bits is used to indicate the target strongest coefficient of the transmission layer l among the non-zero coefficients, where ｌ，１ is the number of ports selected by the terminal device, or For the l-th transmission layer, the frequency domain basis vector indication information is [Equation 20] bits, where N is the number of frequency domain basis vectors that the network side device sets for the terminal side device, and M ｌ is the number of frequency domain basis vectors selected by the terminal side device, or For the l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap having a size of 2N-1, where N is the number of frequency domain basis vectors configured by the network side device for the terminal side device; Here, the codebook specifying device is characterized in that l is an integer greater than 0.

8. the port selection instruction information includes first information and second information, Here, when the two polarization directions selected by the terminal side device correspond to the same port, the first information is used to indicate a product set of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in one polarization direction, or When the two polarization directions selected by the terminal side device correspond to different ports, the first information is used to indicate a product set of ports corresponding to each transmission layer in the two polarization directions, and the second information is used to indicate the remaining ports other than the product set among the ports corresponding to each transmission layer in the two polarization directions.

8. The codebook designation device according to claim 7.

9. The first information has a size [0000] the first information is indicated by a combination number of P bits, or the first information is indicated by a bitmap having a size of P bits; Here, if the two polarization directions selected by the terminal-side device correspond to the same port, P = X / 2; if the two polarization directions selected by the terminal-side device correspond to different ports, P = X, where X is the number of ports set by the network-side device for the terminal-side device, and K is the number of elements in the product set; The second information has a size [Equation 22] the second information is indicated by a combination number of bits, or the second information is indicated by a bitmap having a size of P-K bits; Here, if the two polarization directions selected by the terminal side device correspond to the same port, [Equation 23] and when the two polarization directions selected by the terminal device correspond to different ports, K ｌ，１ =P ｌ ' and P ｌ ' indicates the number of ports selected by the terminal side device for the l-th layer.

9. The codebook designation device according to claim 8.

10. the port selection instruction information includes first information and second information, Here, when two polarization directions selected by the terminal-side device correspond to the same port, the first information is used to indicate a union of ports corresponding to each transmission layer in one polarization direction, and the second information is used to indicate ports corresponding to each transmission layer in one polarization direction, or when two polarization directions selected by the terminal-side device correspond to different ports, the first information is used to indicate a union of ports corresponding to each transmission layer in two polarization directions, and the second information is used to indicate ports corresponding to each transmission layer in two polarization directions.

8. The codebook designation device according to claim 7.

11. The first information has a size [0000] the first information is indicated by a combination number of P bits, or the first information is indicated by a bitmap having a size of P bits; Here, K ２ denotes the number of elements in the union, The second information has a size [Equation 25] The second information is indicated by a combination number of bits, or the second information has a size of K ２ It is indicated by a bitmap bitmap, Here, the K ２ The size of ' is the number of ports selected by the terminal device.

11. The codebook designation device according to claim 10.

Images