CN116158149A

CN116158149A - Codebook sending method, terminal equipment and network equipment

Info

Publication number: CN116158149A
Application number: CN202080103751.XA
Authority: CN
Inventors: 黄莹沛
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2023-05-23
Also published as: WO2022082481A1; CN116158149A8

Abstract

The embodiment of the application relates to a codebook sending method, terminal equipment and communication equipment, wherein the method comprises the steps that the terminal equipment divides a plurality of frequency domain sub-bands into at least one frequency domain sub-band set, and each frequency domain sub-band set comprises a plurality of frequency domain units; the terminal equipment selects part or all of the frequency domain sub-band sets from at least one frequency domain sub-band set, and sends codebook information of the selected frequency domain sub-band set, wherein the codebook information comprises at least one of the following: identification of the selected frequency domain subband set; the linear merging coefficients corresponding to the selected frequency domain subband sets; selecting a vector by a port; a frequency domain vector. The embodiment of the application can enable different frequency domains to bear a plurality of beams, thereby reducing the cost of a required channel state information-reference signal (CSI-RS).

Description

Codebook sending method, terminal equipment and network equipment

Technical Field

The present application relates to the field of communications, and more particularly, to a codebook transmission method, a terminal device, and a network device.

Background

In a fifth generation mobile communication (5G,5th Genetation) New wireless (NR, new Radio) system, a terminal device reports an NR type II codebook for characterizing channel state information (CSI, channel state information) to a network device. For each layer of codebook, the existing NR type II codebook is independently coded in the frequency domain (each sub-band), and the total feedback quantity is too large due to high space quantization precision, so that the feedback quantity can be greatly saved under the condition of ensuring NR performance by feeding back the frequency domain-space joint codebook. The NR type II codebook can be expressed as:

Wherein W is ₁ 2L spatial beams (beams) are indicated,

for determining M discrete Fourier transform (DFT, discrete fourier transformation) basis vectors,

(2 l x m) indicates the weighting coefficients of any spatial beam, frequency domain DFT vector pair.

In the existing reporting technology of the NR type II codebook, the entire frequency domain range can only be carried in one beam, so that the overhead of the required channel state information-reference signal (CSI-RS, channel state information-reference signal) is large.

Disclosure of Invention

The embodiment of the application provides a codebook sending method, terminal equipment and network equipment, which can realize that different frequency domains bear a plurality of beams and reduce the cost of a required CSI-RS.

The embodiment of the application provides a codebook sending method, which comprises the following steps:

the terminal equipment divides the plurality of frequency domain sub-bands into at least one frequency domain sub-band set, and each frequency domain sub-band set comprises a plurality of frequency domain units;

the terminal equipment selects at least one frequency domain sub-band set from the at least one frequency domain sub-band set, and sends codebook information of the selected frequency domain sub-band set, wherein the codebook information comprises at least one of the following:

identification of the selected frequency domain subband set; linear combining coefficients (LCC, linear combination coefficient) corresponding to the selected set of frequency domain subbands; selecting a vector by a port; a frequency domain vector.

The embodiment of the application also provides a codebook receiving method, which comprises the following steps:

the network device receives codebook information of a frequency domain subband set selected by the terminal device, wherein the codebook information comprises at least one of the following items:

identification of the selected frequency domain subband set; the linear combination coefficient LCC corresponding to the selected frequency domain sub-band set; selecting a vector by a port; a frequency domain vector.

The embodiment of the application also provides a terminal device, which comprises:

a dividing module, configured to divide a plurality of frequency domain subbands into at least one frequency domain subband set, each frequency domain subband set including a plurality of frequency domain units;

a selection module, configured to select a part or all of the frequency domain subband sets from at least one frequency domain subband set;

the transmitting module is configured to transmit codebook information of the selected frequency domain subband set, where the codebook information includes at least one of the following:

The embodiment of the application also provides a network device, which comprises:

the receiving module is configured to receive codebook information of a frequency domain subband set selected by a terminal device, where the codebook information includes at least one of the following:

The embodiment of the application also provides a terminal device, which comprises: a processor and a memory for storing a computer program, the processor invoking and running the computer program stored in the memory for performing the method as described above.

The embodiment of the application also provides a network device, which comprises: a processor and a memory for storing a computer program, the processor invoking and running the computer program stored in the memory for performing the method as described above.

The embodiment of the application also provides a chip, which comprises: and a processor for calling and running the computer program from the memory, so that the device on which the chip is mounted performs the method as described above.

The embodiment of the application also provides a computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method as described above.

Embodiments of the present application also provide a computer program product comprising computer program instructions, wherein the computer program instructions cause a computer to perform the method as described above.

The embodiment of the application also provides a computer program, which enables a computer to execute the method.

According to the method and the device, the frequency domain range is divided into at least one frequency domain sub-band set through the terminal equipment, all or part of the frequency domain sub-band set is selected from the divided frequency domain sub-band set, codebook information of the selected frequency domain sub-band set is reported, and a plurality of beams can be borne by different frequency domains, so that the cost of the required CSI-RS is reduced.

Drawings

Fig. 1 is a schematic diagram of an application scenario in an embodiment of the present application.

Fig. 2 is a flowchart of an implementation of a codebook transmission method 200 according to an embodiment of the present application.

Fig. 3 is a schematic diagram of a manner of dividing a set of frequency domain subbands according to an embodiment of the present application.

Fig. 4 is a schematic diagram of another manner of dividing a set of frequency domain subbands according to an embodiment of the present application.

Fig. 5 is a schematic diagram of another manner of dividing a set of frequency domain subbands according to an embodiment of the present application.

Fig. 6 is a flowchart of an implementation of a codebook receiving method 600 according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a terminal device 700 according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a network device 800 according to an embodiment of the present application.

Fig. 9 is a schematic structural diagram of a communication device 900 according to an embodiment of the present application;

Fig. 10 is a schematic structural diagram of a chip 1000 according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

It should be noted that the terms "first," "second," and the like in the description and the claims of the embodiments of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. The objects described as "first" and "second" may be the same or different.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio (NR) system, evolution system of NR system, LTE-based access to unlicensed spectrum, LTE-U) system over unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system over unlicensed spectrum, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), next Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, and the like, to which the embodiments of the present application can also be applied.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, and a Stand Alone (SA) fabric scenario.

The frequency spectrum of the application in the embodiments of the present application is not limited. For example, embodiments of the present application may be applied to licensed spectrum as well as unlicensed spectrum.

Embodiments of the present application describe various embodiments in connection with a network device and a terminal device, wherein: a terminal device may also be called a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, a User device, or the like. The terminal device may be a Station (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, and a next generation communication system, such as a terminal device in an NR network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, functionality that may be implemented in whole or in part independent of the smart phone, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

The network device may be a device for communicating with the mobile device, the network device may be an Access Point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an Access Point, or a vehicle device, a wearable device, and a network device (gNB) in NR network, or a network device in future evolved PLMN network, etc.

In the embodiment of the present application, the network device provides services for a cell, and the terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

Fig. 1 illustrates one network device 110 and two terminal devices 120, alternatively, the wireless communication system 100 may include a plurality of network devices 110, and each network device 110 may include other numbers of terminal devices 120 within a coverage area, which is not limited in this embodiment. The embodiment of the present application may be applied to one terminal device 120 and one network device 110, and may also be applied to one terminal device 120 and another terminal device 120.

Optionally, the wireless communication system 100 may further include other network entities such as a mobility management entity (Mobility Management Entity, MME), an access and mobility management function (Access and Mobility Management Function, AMF), and the like, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following description is given of related technologies of the embodiments of the present application, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as an alternative, which all belong to the protection scope of the embodiments of the present application.

The NR type II codebook can be expressed as:

where W represents the NR type II codebook, i.e., the frequency domain-space joint codebook. W (W) ₁ A DFT vector representing 2L spatial beams. W (W) _f The DFT basis vectors representing M frequency domains.

Represents W _f Is a transpose of (a).

Representing the weighting coefficients of the spatial frequency domain pairs,

is a matrix of size 2l x m.

The CSI content reported by the UE comprises W ₁ The L beams indicated are set to be,

indicated M DFT basis vectors, and quantized

And the base station obtains the CSI of the downlink of each layer by calculating the product of the three components.

The present embodiment proposes a codebook transmission method, and fig. 2 is a schematic flowchart of a codebook transmission method 200 according to an embodiment of the present application, and the method may alternatively be applied to the system shown in fig. 1, but is not limited thereto. The method includes at least some of the following.

S210: the terminal equipment divides the plurality of frequency domain sub-bands into at least one frequency domain sub-band set, and each frequency domain sub-band set comprises a plurality of frequency domain units;

s220: the terminal equipment selects part or all of the frequency domain sub-band sets from the at least one frequency domain sub-band set, and sends codebook information of the selected frequency domain sub-band set, wherein the codebook information comprises at least one of the following:

Identification of the selected frequency domain subband set; linear Combining Coefficients (LCCs) corresponding to the selected set of frequency domain subbands; selecting a vector by a port; a frequency domain vector.

In one implementation, the frequency domain subband may be specifically a precoding matrix indicator (PMI, precoding Matrix Indicator) subband. The terminal equipment will N ₃ Dividing each PMI subband into O ₃ Each frequency domain subband set comprises N PMI subbands, and each PMI subband comprises 1 frequency domain unit; wherein,

N ₃ is a positive integer; o (O) ₃ Is a positive integer; n is equal to N ₃ /O ₃ 。

Fig. 3 is a schematic diagram of a manner of dividing a set of frequency domain subbands according to an embodiment of the present application. In the example shown in fig. 3, the terminal device will N ₃ Dividing each PMI subband into O ₃ The manner of the frequency domain subband sets includes:

will have sequence number i+mO ₃ Dividing the PMI sub-band of the sequence number i into a frequency domain sub-band set; wherein,

N ₃ sequence numbers of the PMI sub-bands are respectively 0 and N ₃ ) Integers within the range; i is [0,O ] ₃ ) Integers within the range; m is an integer in the range of [0, N).

As shown in fig. 3, UE pair N ₃ Dividing PMI subbands, where N ₃ Sequence numbers of the PMI subbands are 0, 1, … 11, respectively, =12. The UE divides 12 PMI sub-bands into O ₃ A set of frequency domain subbands, where O ₃ Serial numbers of each frequency domain subband set are 0, 1, 2, 3, respectively=4. Each divided frequency domain sub-band set contains N PMI sub-bands, and each PMI sub-band contains 1 frequency domain unit. As in fig. 3, n=n ₃ /O ₃ =3, i.e. each frequencyThe field subband set contains 3 PMI subbands, i.e., 3 frequency-domain units.

As shown in fig. 3, the PMI subband included in the frequency domain subband set with sequence number i has sequence number i+mo ₃ Where m is an integer in the range of 0, N), i.e. m=0, 1, …, N-1. For example, the frequency domain subband set with sequence number 0 includes PMI subbands with sequence numbers 0, 4, 8, the frequency domain subband set with sequence number 1 includes PMI subbands with sequence numbers 1, 5, 9, the frequency domain subband set with sequence number 2 includes PMI subbands with sequence numbers 2, 6, 10, and the frequency domain subband set with sequence number 3 includes PMI subbands with sequence numbers 3, 7, 11. In the present embodiment, one PMI subband includes one frequency domain unit, or one PMI subband may be considered to be equivalent to one frequency domain unit; therefore, one frequency-domain subband set contains N PMI subbands, or one frequency-domain subband set may be considered to contain N frequency-domain units.

Alternatively, the above N ₃ ＝N _sb R is R; wherein,

R∈{1,2,4,...,2 ⁿ and meet

Or (b)

Wherein R is a parameter determined by a high layer; n (N) _sb The number of CQI sub-bands;

is a predetermined parameter; n is an integer.

Optionally, the above O ₃ Parameters determined for higher layers or fixed parameters. O (O) ₃ The value of (2) may include at least one of:

O ₃ =r; alternatively, when r=4, O ₃ E {2,4}; when r=2，O ₃ =2; alternatively, O ₃ =2; alternatively, O ₃ =4; alternatively, O ₃ ＝R/2 ^m Wherein m is an integer; alternatively, O ₃ Satisfy mod (N) ₃ ,O ₃ ) =0; alternatively, when N ₃ When < T, O ₃ =1; otherwise (i.e. N ₃ ≥T)，O ₃ > 1; alternatively, when N ₁ N ₂ < T or 2N ₁ N ₂ T or 2L < T or K ₀ When < T, O ₃ =1; when N is ₁ N ₂ Not less than T or 2N ₁ N ₂ T or 2L or more ₀ When not less than T, O ₃ > 1; wherein N is as described above ₁ For the number of antenna ports in the horizontal direction, N ₂ The number of antenna ports in the vertical direction is T is a preset threshold, L is the number of beams, and K ₀ Is the number of maximum non-zero coefficients.

In another implementation, the process of dividing the frequency domain subband set by the terminal device includes:

for N ₃ Dividing each PMI sub-band into O ₃ A frequency domain unit;

extracting frequency domain units with the same sequence number from each PMI sub-band respectively, and forming the frequency domain units with the same sequence number into a frequency domain sub-band set to obtain O ₃ Each frequency domain sub-band set comprises N frequency domain units; wherein,

N ₃ is a positive integer; o (O) ₃ Is a positive integer; n is equal to N ₃ 。

Fig. 4 is a schematic diagram of another manner of dividing a set of frequency domain subbands according to an embodiment of the present application. In the example shown in fig. 4, the terminal device will N ₃ (N in the example of FIG. 4) ₃ =2) dividing the PMI sub-bands, dividing each PMI sub-band into 2 frequency domain units, and selecting one frequency domain unit from each PMI sub-band to form a frequency domain sub-band set, thereby forming 2 frequency domain sub-band setsAnd (5) combining. For example, in the example of fig. 4, the PMI subband with the sequence number 0 (PMI subband 0 for short) is divided into 2 frequency domain units, including frequency domain unit 0 and frequency domain unit 1; meanwhile, a PMI subband with a sequence number of 1 (PMI subband 1 for short) is divided into 2 frequency domain units, including a frequency domain unit 0 and a frequency domain unit 1. Then, extracting a frequency domain unit 0 of the PMI sub-band 0 and a frequency domain unit 0 of the PMI sub-band 1 to form a frequency domain sub-band set with a sequence number of 0; in the same way, the frequency domain unit 1 of the PMI subband 0 and the frequency domain unit 1 of the PMI subband 1 are extracted to form a frequency domain subband set with the sequence number of 1.

It can be seen that in this way, n=n3. That is, as shown in the example of fig. 4, one frequency domain unit extracted from each PMI subband is included in each frequency domain subband set, and thus the frequency domain unit value included in each frequency domain subband set is the same as the value of the PMI subband.

Accordingly, in this manner, each frequency domain unit is formed of

And Resource Blocks (RBs).

Optionally, the above O ₃ ＝2 ^m And is also provided with

Wherein m and n are integers.

for N ₃ The (CQI, channel quality indication) sub-bands are divided, each being divided into O ₃ A frequency domain unit;

extracting frequency domain units with the same sequence number from each CQI sub-band respectively, and forming the frequency domain units with the same sequence number into a frequency domain sub-band set to obtain O ₃ Each frequency domain sub-band set comprises N frequency domain units; wherein N is ₃ Is a positive integer; o (O) ₃ Is a positive integer; n is equal to N ₃ 。

Fig. 5 is a schematic diagram of another manner of dividing a set of frequency domain subbands according to an embodiment of the present application. In the example shown in fig. 5, the terminal device will N ₃ (N in the example of FIG. 5) ₃ =2) CQI subbands are divided, each CQI subband is divided into 4 frequency domain units, and then one frequency domain unit is selected from each PMI subband to form one frequency domain subband set, so as to form 4 frequency domain subband sets. For example, in the example of fig. 5, the CQI subband with sequence number 0 (CQI subband 0 for short) is divided into 4 frequency domain units, including frequency domain unit 0, frequency domain unit 1, frequency domain unit 2, and frequency domain unit 3; meanwhile, a CQI sub-band with a sequence number of 1 (called CQI sub-band 1 for short) is divided into 4 frequency domain units, including a frequency domain unit 0, a frequency domain unit 1, a frequency domain unit 2 and a frequency domain unit 3. Then, extracting a frequency domain unit 0 of the PMI sub-band 0 and a frequency domain unit 0 of the PMI sub-band 1 to form a frequency domain sub-band set with a sequence number of 0; in the same way, the frequency domain unit 1 of the PMI sub-band 0 and the frequency domain unit 1 of the PMI sub-band 1 are extracted to form a frequency domain sub-band set with the sequence number of 1; extracting a frequency domain unit 2 of the PMI sub-band 0 and a frequency domain unit 2 of the PMI sub-band 1 to form a frequency domain sub-band set with a sequence number of 2; the frequency domain unit 3 of the PMI subband 0 and the frequency domain unit 3 of the PMI subband 1 are extracted to form a frequency domain subband set with the sequence number of 3.

It can be seen that in this way, n=n3. That is, as shown in the example of fig. 5, each frequency-domain subband set contains one frequency-domain element extracted from each CQI subband, and thus the frequency-domain element contained in each frequency-domain subband set has the same value as that of the CQI subband.

Accordingly, in this manner, each frequency domain unit is formed of

And each RB is formed.

Optionally, the above O ₃ ＝2 ^m And is also provided with

Wherein m is an integer.

The manner in which the UE divides the set of frequency domain subbands is described above. After dividing the frequency domain subband set, the UE may select a part or all (e.g., K) of the frequency domain subband sets from the divided frequency domain subband sets according to at least one of a higher layer parameter configuration, a predetermined selection manner, and dynamic indication information, and report codebook information to the selected frequency domain subband sets. Alternatively, the base station passes O ₃ The number of bits indicates that K sets of frequency domain subbands are selected.

In one implementation, the frequency domain vector included in the codebook information includes a first frequency domain vector and/or a second frequency domain vector, for example, expressed by the following formula:

wherein,

representing a frequency domain vector contained in the codebook information;

representing a first frequency domain vector;

representing a second frequency domain vector;

representing the calculation of the kronecker product.

Is a direction with length of KThe amount, which may be chosen, is also equal to K.

Is a vector of length N, which may be chosen to have a value also equal to N.

The kronecker product is an operation between two matrices.

And

representing two vectors, the matrix is a special matrix. For a pair of

And

the kronecker product is calculated to obtain a vector with a length of K x N, i.e. a frequency domain vector.

In an implementation, a first frequency domain vector

The optional values of (a) include vectors formed by each row or column of elements of the K-order identity matrix, i.e., vectors with the q-th element being 1 and the remaining elements being 0.

For example, when k=2, the K-order identity matrix is as follows:

then

Comprises 2, namely vector (1, 0) and vector (0, 1).

As another example, when k=4, the K-order identity matrix is as follows:

then

The selectable value of (c) includes 4, namely vector (1, 0), vector (0, 1, 0) (0, 1, 0) and vector (0, 1).

In an implementation, a first frequency domain vector

The optional values of (1) include vectors of each row or column element of a K-order Hadamard (Hadamard) matrix.

For example, when k=2, the K-order Hadamard matrix is as follows:

then

Comprises 2, namely a vector (1, -1) and a vector (-1, 1).

For another example, when k=4, the K-order Hadamard matrix is as follows:

Then

The selectable values of (1) include 4, namely vector (1, 1), vector (1, -1, -1), (1, -1, -1) and vector (1, -1, 1).

In an implementation, a first frequency domain vector

Is one of the following matrices:

(when k=2)

Then a first frequency domain vector

Comprises 2, namely any two of vector (1, 0), vector (0, 1) and vector (1, 1).

In an implementation, a first frequency domain vector

Is one of the following matrices:

(when k=4)

Then a first frequency domain vector

The selectable value of (c) includes 4, namely vector (1, 0), vector (0, 1, 0) (0, 1, 0), vector (0, 1),Vectors (1, 0), (0, 1), vectors (1, 0,1, 0) vector (0, 1, 0) and vector (1, 1).

In an implementation, a first frequency domain vector

For DFT vectors, i.e

Or alternatively

Wherein q, K e [0,1 ], K-1]。

In an implementation, a second frequency domain vector

Is a vector of length N and a fixed value for each element. For example, the number of the cells to be processed,

i.e. a matrix of all 1's of length N.

In an implementation, a second frequency domain vector

For the second frequency domain vector to be a DFT vector,

or alternatively

Wherein N, K e [0,1 ], K-1]. . Optionally, the sequence number of the DFT vectork is fixed, or indicated by the base station, or reported by the UE to the base station.

UE determination

And

and report the determined to the base station

And

the base station determines the W in the codebook information reported by the UE according to the W _f . And, UE slave 2N ₁ N ₂ Selecting a port from the ports, and reporting the corresponding port selection vector to the base station, wherein N is ₁ For the number of antenna ports in the horizontal direction, N ₂ Is the number of antenna ports in the vertical direction. In addition, the UE also reports other codebook information such as non-zero coefficient position information, non-zero coefficient sum, non-zero coefficient priority, etc. to the base station.

For the first frequency domain vector

The embodiments of the present application propose the following expressions:

optionally, the first frequency domain vector is represented by first indication information; the length of the first indication information is determined by at least one of: k, performing K; the number of first frequency domain vectors contained in the codebook information; a number of non-zero coefficients; number of layers.

Optionally, the length of the first indication information is

Or K; wherein M is the number of first frequency domain vectors contained in the codebook information; k (K) _nz Is a number of non-zero coefficients.

Optionally, for the case that the number v of layers is greater than 1, the embodiment of the application may adopt a mode of independently selecting each layer, and all layers adopt the same first indication information to indicate. Specifically, the first indication information has a length of

Or (b)

Wherein M is the number of first frequency domain vectors of each layer contained in the codebook information; v is the number of layers.

Optionally, for the case that the number v of layers is greater than 1, the embodiment of the application may adopt a mode of independently selecting each layer, and each layer uses an independent first indication information to indicate. Optionally, the first frequency domain vector is represented with 1 first indication information for each layer;

the length of the first indication information corresponding to each layer is

Wherein,

M _l is the number of first frequency domain vectors of the first layer contained in the codebook information.

Alternatively, for the case that the number of layers v is greater than 1, the embodiment of the application may adopt a mode of independently selecting each layer, and groups the layers, where the layers included in each group are indicated by using one first indication information. Optionally, the first frequency domain vector is represented by at least two first indication information, and each first indication information corresponds to a first frequency domain vector of a partial layer included in the codebook information. For example, for the case of v=4, the first frequency domain vectors of layer 0 and layer 1 are represented by one first indication information, and the first frequency domain vectors of layer 2 and layer 3 are represented by another first indication information.

Alternatively, for the case where the number of layers v is greater than 1, a joint selection manner may be adopted in the embodiments of the present application, for example, one indication information is used to indicate the optional range of the first frequency domain vector, and another indication information is used to indicate the first frequency domain vector selected in the optional range.

For example, the first frequency domain vector is represented by second indication information and third indication information;

the second indication information has the length of

Wherein M is ₀ Parameters determined by a higher layer or parameters determined by a terminal device (representing the optional range of the first frequency domain vector described above);

the third indication information has the length of

Where v is the number of layers and M is the number of first frequency domain vectors for each layer included in the codebook information.

Optionally, for the case that the number of layers v is greater than 1, a block selection manner may be adopted in the embodiments of the present application, for example, the first frequency domain vector is represented by using fourth indication information and fifth indication information;

the length of the fourth indication information is

The fourth indication information is used for indicating the starting position of the first frequency domain vector of each layer contained in the codebook information;

the length of the fifth indication information is

Wherein v is the number of layers; k (K) _W For the window length of the first frequency-domain vector of each layer from the start position, M is the number of first frequency-domain vectors of each layer contained in the codebook information.

For the second frequency domain vector

The embodiments of the present application propose the following expressions:

optionally, the second frequency domain vector is represented by sixth indication information; the length of the sixth indication information is determined by at least one of: n; the number of second frequency domain vectors contained in the codebook information; the number of layers; layer sequence number.

Optionally, the length of the sixth indication information is

Wherein M is the number of second frequency domain vectors contained in the codebook information.

Alternatively, for the case where the number of layers v is greater than 1, the embodiment of the present application may use a mode of independently selecting each layer, and all layers use the same sixth indication information to indicate. Specifically, the sixth indication information has a length of

Wherein,

m is the number of second frequency domain vectors of each layer contained in the codebook information;

v is the number of layers.

Alternatively, for the case that the number of layers v is greater than 1, the embodiment of the application may adopt a mode of independently selecting each layer, and each layer adopts an independent sixth indication information to indicate.

Alternatively, for the case where the number of layers v is greater than 1, a combination selection manner may be adopted in the embodiments of the present application, for example, one indication information is used to indicate the optional range of the second frequency domain vector, and another indication information is used to indicate the second frequency domain vector selected in the optional range.

For example, the second frequency domain vector is represented by seventh indication information and eighth indication information;

the seventh indication information has the length of

Wherein M is ₀ Parameters determined by a higher layer or parameters determined by a terminal device (representing an optional range of the second frequency domain vector described above);

the length of the eighth indication information is

Wherein v is the number of layers, and M is the number of second frequency domain vectors of each layer contained in the codebook information.

For the port selection vector, the embodiments of the present application propose the following expressions:

the port selection vector is represented by ninth indication information;

optionally, the length of the ninth indication information is determined by at least one of: n (N) ₁ ；N ₂ The method comprises the steps of carrying out a first treatment on the surface of the The number of port selection vectors contained in the codebook information; the number of layers; wherein N is ₁ For the number of antenna ports in the horizontal direction, N ₂ Is the number of antenna ports in the vertical direction.

Optionally, the length of the ninth indication information is

Or (b)

Wherein 2L is the number of port selection vectors contained in the codebook information.

Alternatively, for the case where the number of layers v is greater than 1, the embodiment of the present application may use a mode of independently selecting each layer, and all layers use the same ninth indication information to indicate. Specifically, the length of the ninth indication information is

Or (b)

Wherein 2L is the number of port selection vectors for each layer contained in the codebook information. v is the number of layers.

Alternatively, for the case that the number of layers v is greater than 1, the embodiment of the application may adopt a mode of independently selecting each layer, and each layer adopts an independent ninth indication information to indicate. Optionally, the port selection vector is represented by 1 ninth indication information for each layer;

the length of the ninth indication information corresponding to each layer is

Or (b)

Wherein 2L _l The number of vectors is selected for the ports of the first layer included in the codebook information. N (N) ₁ The number of antenna ports in the horizontal direction; n (N) ₂ Is the number of antenna ports in the vertical direction.

Alternatively, for the case that the number of layers v is greater than 1, the embodiment of the application may adopt a mode of independently selecting each layer, and groups the layers, where each layer included in each group is indicated by using a ninth indication information. Optionally, the port selection vector is represented by at least two ninth indication information, where each ninth indication information corresponds to a port selection vector of a partial layer included in the codebook information. For example, for the case of v=4, port selection vectors of layer 0 and layer 1 are represented by one ninth instruction information, and port selection vectors of layer 2 and layer 3 are represented by another ninth instruction information.

Alternatively, for the case where the number of layers v is greater than 1, a combination selection manner may be adopted in the embodiments of the present application, for example, one indication information is used to indicate the selectable range of the port selection vector, and the other indication information is used to indicate the port selection vector selected in the selectable range.

For example, the port selection vector is represented by tenth indication information and eleventh indication information;

the tenth indication information has a length of

Or (b)

Wherein N is ₁ For the number of antenna ports in the horizontal direction, N ₂ For the number of antenna ports in the vertical direction, L ₀ Parameters determined by a higher layer or parameters determined by a terminal device (representing the optional range of the port selection vector described above);

the eleventh indication information has a length of

Wherein v is the number of layers, and 2L is the number of port selection vectors for each layer included in the codebook information.

Optionally, for the case that the number of layers v is greater than 1, a block selection manner may be adopted in the embodiments of the present application, for example, the port selection vector is represented by twelfth indication information and thirteenth indication information;

wherein the twelfth indication information has a length of

Or (b)

The twelfth indication information is used for indicating the starting position of the port selection vector of each layer contained in the codebook information;

The thirteenth indication information has a length of

Or (b)

Wherein v is the number of layers, L _W And selecting a window length of the vector from the starting position for the port of each layer, wherein 2L is the number of first frequency domain vectors of each layer contained in the codebook information.

The above describes the first frequency domain vectors respectively

Second frequency domain vector

The manner in which the port selection vector is indicated. And when the UE reports the codebook information, the UE reports the content.

In addition, the codebook information may further include non-zero coefficient position information. And, the UE may also send information such as the sum of non-zero coefficients, the priority of non-zero coefficients, etc. to the base station.

Optionally, the non-zero coefficient position information is represented by fourteenth indication information; the fourteenth indication information has a length of

2LM、

Or (b)

Wherein L is the number of beams; k (K) ₀ The number of the maximum non-zero coefficients; m is the number of first frequency domain vectors contained in the codebook information; n (N) ₁ The number of antenna ports in the horizontal direction; n (N) ₂ The number of antenna ports in the vertical direction; k (K) _nz Is a number of non-zero coefficients.

Alternatively, for the case that the number of layers v is greater than 1, the embodiment of the application may adopt a mode of independently selecting each layer, and each layer uses an independent fourteenth indication information for indication. Optionally, each layer of non-zero coefficient position information is represented by 1 fourteenth indication information;

The length of the fourteenth indication information corresponding to each layer is

Wherein M is the number of first frequency domain vectors of each layer contained in the codebook information; k (K) _nz The number of non-zero coefficients for each layer contained in the codebook information.

Alternatively, for the case that the number of layers v is greater than 1, the embodiments of the present application may use a manner of independently selecting each layer, and grouping the layers, where each layer included in each group is indicated by using a fourteenth indication information. Optionally, the non-zero coefficient position information is represented by at least two fourteenth indication information, each of which corresponds to a non-zero coefficient position of a partial layer contained in the non-zero coefficient position information. For example, for the case of v=4, the non-zero coefficient positions of layer 0 and layer 1 are represented by one fourteenth indication information, and the non-zero coefficient positions of layer 2 and layer 3 are represented by another fourteenth indication information.

Alternatively, for the case where the number of layers v is greater than 1, the embodiment of the present application may use a joint selection manner, for example, one indication information is used to indicate the optional range of the non-zero coefficient positions, and another indication information is used to indicate the non-zero coefficient positions selected in the optional range.

For example, the non-zero coefficient position information is represented by fifteenth indication information and sixteenth indication information;

the fifteenth indication information has a length of

Or (b)

Wherein L is the number of beams, M is the number of first frequency domain vectors of each layer contained in the codebook information, K _nz,0 Parameters determined by higher layers or parameters determined by terminal equipment;

the sixteenth indication information has a length of

Wherein v is the number of layers, K _nz,i Is the number of non-zero coefficients of the i-th layer included in the codebook information.

In the following embodiments, the above-described embodiments will be described

Abbreviated as

For indicating the number of alternatives to select y elements from the x elements.

In an implementation, the UE is from 2N ₁ N ₂ 2L ports are selected from the ports, and the length is adopted

Or (b)

Reporting the port selection vector by the indication information of the bit; UE from N

Is selected from M

Then adopt a length of

Indication information reporting of (a)

From K UEs

Is selected to be one of

Then adopt a length of

Or reporting indication information of K

In an implementation, the UE is from 2N ₁ N ₂ Selecting 2 ports from the ports, and adopting the length of

Or (b)

Reporting port selection vectors to the instruction information; from K UEs

Select K _nz Personal (S)

Then adopt a length of

Reporting of indication information of (or Kbits)

Or (b)

Reporting the port selection vector by the indication information of the bit; from K UEs

Is selected from M

Then adopt a length of

Reporting of indication information of (or Kbits)

UE selects K from 2LM non-zero coefficients _nz Non-zero coefficients are used with a length of

And (2) reporting the position of the non-zero coefficient by the indication information of (or 2 LMbits).

Or (b)

Reporting the port selection vector by the indication information of the bit; UE selects K from 2LK non-zero coefficients _nz Non-zero coefficients are used with a length of

And (2) reporting the position of the non-zero coefficient by the indication information of (or 2 LKBits).

In an implementation, the UE is from 2N ₁ N ₂ Selecting K from K non-zero coefficients _nz Non-zero coefficients are used with a length of

(or 2N) ₁ N ₂ K bits) reports the position of the non-zero coefficient.

(or 2N) ₁ N ₂ K bits) reports the position of the non-zero coefficient.

In the above various implementations, K _nz The number of non-zero coefficients is represented, and the value of the number cannot exceed the maximum number of non-zero coefficients or the sum of the numbers of non-zero coefficients of all layers.

Wherein the maximum non-zero coefficient number can be K ₀ The representation is made of a combination of a first and a second color,

or alternatively

Or alternatively

Or alternatively

Or alternatively

Or alternatively

Where β is a parameter configured by a higher layer for configuring a maximum non-zero coefficient number.

For v>1, the sum of all layer non-zero coefficients can be used as K _total The representation, wherein,

α＞1。

in the present embodiment, for the number of layers v>1, may be independently selected, such as ports for each layer for the UE,

The positions of the non-zero coefficients are independently selected. Specifically:

in one implementation, the UE selects ports for each layer independently, each layer from 2N ₁ N ₂ 2L ports are selected from the ports, the length of the port can be adopted for all layers

Or (b)

The indication information of (1) reports the port selection vector. Alternatively, the UE selects the same port for each layer, and may employ a length for all layers

Or (b)

The indication information of (1) reports the port selection vector.

In an implementation, the UE is configured to, for each layer

Independently select from N of each layer

Is selected from M

Then a length of all layers can be employed

Indication information reporting of (a)

Alternatively, the UE selects the same for each layer

Length can be used for all layers

Indication information reporting of (a)

In an implementation, the UE is configured to, for each layer

Independently select from K

Is 1 selected from

Then a length of all layers can be employed

Indication information reporting of (a)

Alternatively, the UE selects the same for each layer

Length can be used for all layers

Indication information reporting of (a)

In an implementation, the UE is configured to, for each layer

Independently select from K

Is selected from M

Then a length of all layers can be employed

Indication information reporting of (a)

Alternatively, the UE selects the same for each layer

Length can be used for all layers

Indication information reporting of (a)

In one implementation, for the case of the number v=4, one indication information is used for the layers with sequence numbers 0 and 1 to indicate the ports selected by the UE, and another indication information is used for the layers with sequence numbers 2 and 3 to indicate the ports selected by the UE.

For example, when l=0, 1, a length of

Or (b)

Indicating ports selected by the UE in layers 0 and 1; l=2, 3, the length is used

Or (b)

Indicating ports selected by the UE in layers 2 and 3; wherein L is ₁ Indicating the number of ports selected in layers 0 and 1, L ₂ Indicating the number of ports selected in layers 2 and 3, L ₁ And L ₂ May be the same or different.

In one implementation, one indication information is employed for each layer to indicate the ports selected by the UE. For example, for layer l, a length of

Or (b)

Indicating the port selected by the UE in the first layer. Wherein L is ₁ The number of ports selected in the first layer is represented, and the number of ports selected in each layer may be the same or different.

In one implementation, one indication information is used for each layer to indicate UE selection

For example, for layer l, a length of

Indicating information of (a) indicates that the UE is inSelected in the first layer

Wherein M is ₁ Indicating selection in layer I

Is selected at each layer

The number may be the same or different.

In one implementation, the pass length is

The indication information (or 2 LMbits) indicates the positions of the non-zero coefficients of all layers, and the amplitude mapping table may contain 0 amplitude.

Similar to the port selection vector and the frequency domain resource indication, the positions of the non-zero coefficients may also be indicated for different layers, for example, for the case of v=4, one indication information is used for layer 0 and layer 1 to indicate the positions of the non-zero coefficients, and another indication information is used for layer 2 and layer 3 to indicate the positions of the non-zero coefficients.

In the present embodiment, for the number of layers v>1, a joint selection manner can be adopted, for example, the UE aims at ports,

Or the position of the non-zero coefficients. Specifically:

In an implementation, the UE performs joint selection on ports, and adoptsTwo indication information indicate ports selected by the UE, one indication information indicates a port selected from each layer of ports (the number is denoted as L ₀ ) Another indication information indicates each layer from the L ₀ A selected port of the ports. For example, using a length of

Or (b)

Indicating information indicating L selected from each layer of ports ₀ Each port adopts a length of

Indicating information of (a) indicates each layer of slave L ₀ The final selected port of the ports. Wherein L is ₀ Parameters that may be determined for higher layers or parameters reported by the UE; if L ₀ Parameters reported for the UE may be reported in the first part (part 1) of CSI uplink control information (UCI, uplink control information).

In an implementation, a UE pair

Performing joint selection, and indicating UE selection by adopting two indicating information

Wherein the indication information indicates the information from each layer

Selected from (a)

(the number is denoted as M ₀ ) Another indication information indicates each layer from the M ₀ Personal (S)

Selected from (a)

For example, using a length of

Indicating information of (a) indicates from each layer

Selected M ₀ Personal (S)

By a length of

Indicating information of (a) indicates each layer of slave M ₀ Personal (S)

Is selected at the end of the process

Wherein M is ₀ Parameters that may be determined for higher layers or parameters reported by the UE; if M ₀ Parameters reported for the UE may be reported in CSI UCI part 1.

In an implementation, a UE pair

Wherein the indication information indicates the information from each layer

Selected from (a)

Selected from (a)

For example, using a length of

Indicating information of (a) indicates from each layer

Selected M ₀ Personal (S)

By a length of

Indicating information of (a) indicates each layer of slave M ₀ Personal (S)

Is selected at the end of the process

In one implementation, the UE performs joint selection on the non-zero coefficients, and uses two indication information to indicate the non-zero coefficients selected by the UE, where one indication information indicates the non-zero coefficients selected from each layer of non-zero coefficients (where the number is denoted as K) _nz,0 ) Another indication information indicates each layer from the K _nz,0 A non-zero coefficient selected from the non-zero coefficients. For example, using a length of

Or (b)

Or (b)

Or (b)

Indicating information indicating K selected from non-zero coefficients of each layer _nz,0 Each layer adopts a length of

Indicating information of (a) indicates that the layer is from K _nz,0 The final selected non-zero coefficient of the non-zero coefficients. Wherein K is _nz,0 Determined by higher layer parameters.

In one implementation, K is selected from 2Lv non-zero coefficients _{nz_total} By a coefficient of

And reporting the bit indication information to the base station.

In the present embodiment, for the number of layers v>1, a block indication manner may be adopted, for example, ports of the UE for each layer,

The position of the non-zero coefficient is indicated in a blocking way, namely an indication port,

A start position of a non-zero coefficient, a port defined within a range defined by the start position,

Or a non-zero coefficient. Specifically:

in one implementation, the UE employs a length log ₂ (2N ₁ N ₂ ) Or log of ₂ (N ₁ N ₂ ) Indicating the start position of the port by the indicating information of the length of

Or (b)

To determine the ports determined by the UE within the range of the starting position determination. Wherein the length is

The indication information of (2) may correspond to the independence between polarizations, and may be derived from 2N ₁ N ₂ The Lw ports are selected from the ports; length of

The indication information of (a) may correspond to the independence between polarizations, and is derived from N ₁ N ₂ The Lw ports are selected from the ports; length of

The indication information of (a) may correspond to the same situation between polarizations.

In one implementation, the UE employs a length log ₂ (K) Indication information of (a) indicates

And pass through the initial position of length of

To determine each layer determined by the UE within the range of the starting position determination

In addition to reporting the information described in the above embodiments, the UE may report the sum of the non-zero coefficients of all layers in CSI UCI part1, and the sum of the non-zero coefficients of all layers may be 0. Alternatively, for the case of rank (rank) =1In the case of log length ₂ (K ₀ Reporting the indication information of +1); for rank>1, using a length log ₂ (2K ₀ And +1) reporting the indication information. Wherein K is ₀ The number of maximum non-zero coefficients is indicated.

Optionally, when the sum of the reported non-zero coefficients is 0, the UE does not report CSI group (group) 0/group1/group2 part2.

Alternatively, the indication information of the sum of the non-zero coefficients reported by the UE may be for any CQI.

Further, the UE may also report the strongest coefficient indication information, for example:

when v=1, the pass length is log ₂ (K _nz ) The indication information of the (c) reports the strongest coefficient indication.

Alternatively, when v>1, the passing length is

Indicating information of (a), or each layer has a passing length of

The indication information of the (c) reports the strongest coefficient indication.

Or all reports of the strongest coefficient with a pass length of

Is indicated by the indication information of (a).

Further, the UE may also report non-zero coefficient priorities, including: pri (l, i, f) =2×lxvf+v×i+l; pri (l, i, f) represents the reported non-zero coefficient priority;

l, i and f respectively represent the sequence numbers of layers, the sequence numbers of frequency domain vectors and the sequence numbers of ports; l=1, 2, …, v; i=0, 1, …,2L-1; f=0, 1, …, mv-1; mv is a parameter corresponding to the different number of layers.

Alternatively, pri (l, i, f) =2×mv×v×i+v×f+l; pri (l, i, f) represents the reported non-zero coefficient priority; l, i and f respectively represent the sequence numbers of layers, the sequence numbers of frequency domain vectors and the sequence numbers of ports; l=1, 2, …, v; i=0, 1, …,2L-1; f=0, 1, …, mv-1; mv is a parameter corresponding to the different number of layers.

As can be seen from the foregoing embodiments, in the embodiments of the present application, a terminal device divides a frequency domain range into at least one frequency domain subband set, selects all or part from the divided frequency domain subband set, and reports codebook information of the selected frequency domain subband set, so that different frequency domains can carry multiple beams, so as to reduce the overhead of a required CSI-RS. Under the condition of considering uplink and downlink channel dissimilarity, the embodiment of the application further compresses codebook overhead, improves feedback efficiency and improves system robustness by estimating the characteristics of a space domain and a time delay (DFT conversion domain) from an uplink channel SRS.

The present application further proposes a codebook receiving method, and fig. 6 is a schematic flowchart of a codebook receiving method 600 according to an embodiment of the present application, and the method may alternatively be applied to the system shown in fig. 1, but is not limited thereto. The method includes at least some of the following.

S610: the network device receives codebook information of a frequency domain subband set selected by the terminal device, wherein the codebook information comprises at least one of the following items:

Optionally, the frequency domain vector includes a first frequency domain vector and/or a second frequency domain vector.

Optionally, the length of the first frequency domain vector and the number of selectable values are K, where K is the number of the selected frequency domain subband sets.

Optionally, the selectable values of the first frequency domain vector include:

vectors formed by each row or each column of elements of the K-order identity matrix; or,

a vector of each row or column of elements of the K-order hadamard matrix.

Optionally, the first frequency domain vector is a discrete fourier transform DFT vector.

Optionally, the first frequency domain vector is represented by first indication information;

the length of the first indication information is determined by at least one of: k, performing K; the number of first frequency domain vectors contained in the codebook information; a number of non-zero coefficients; number of layers.

Optionally, the length of the first indication information is

Optionally, the length of the first indication information is

Or (b)

Optionally, the first frequency domain vector is represented by 1 first indication information for each layer;

the length of the first indication information corresponding to each layer is

Wherein M is _l Is the number of first frequency domain vectors of the first layer contained in the codebook information.

Optionally, the first frequency domain vector is represented by at least two first indication information, where each first indication information corresponds to a first frequency domain vector of a partial layer included in the codebook information.

Optionally, the first frequency domain vector is represented by second indication information and third indication information;

the second indication information has the length of

Wherein M is ₀ Parameters determined by higher layers or parameters determined by terminal equipment;

the third indication information has the length of

Wherein v is the number of layers, and M is the number of first frequency domain vectors of each layer contained in the codebook information.

Optionally, the first frequency domain vector is represented by fourth indication information and fifth indication information;

the length of the fourth indication information is

The length of the fifth indication information is

Wherein v is the number of layers; k (K) _W For the window length of the first frequency domain vector of each layer from the start position, M is the number of first frequency domain vectors of each layer contained in the codebook information.

Optionally, the length of the second frequency domain vector and the number of possible values are N, where N is the number of frequency domain units included in each frequency domain subband set.

Optionally, the second frequency domain vector is a vector with a length of N and a fixed value of each element.

Optionally, the second frequency domain vector is a discrete fourier transform DFT vector.

Optionally, the second frequency domain vector is represented by sixth indication information;

the length of the sixth indication information is determined by at least one of: n; the number of second frequency domain vectors contained in the codebook information; the number of layers; layer sequence number.

Optionally, the length of the sixth indication information is

Wherein,

m is the number of second frequency domain vectors contained in the codebook information.

Optionally, the length of the sixth indication information is

Wherein M is the number of second frequency domain vectors of each layer contained in the codebook information; v is the number of layers.

Optionally, the second frequency domain vector is represented by seventh indication information and eighth indication information;

The seventh indication information has the length of

the length of the eighth indication information is

Optionally, the port selection vector is represented by a ninth indication information; the length of the ninth indication information is determined by at least one of: n (N) ₁ ；N ₂ The method comprises the steps of carrying out a first treatment on the surface of the The number of port selection vectors contained in the codebook information; the number of layers; wherein N is ₁ For the number of antenna ports in the horizontal direction, N ₂ Is the number of antenna ports in the vertical direction.

Optionally, the length of the ninth indication information is

Or (b)

Wherein,

2L is the number of port selection vectors included in the codebook information.

Optionally, the length of the ninth indication information is

Or (b)

Optionally, the port selection vector is represented by 1 ninth indication information for each layer;

the length of the ninth indication information corresponding to each layer is

Or (b)

Optionally, the port selection vector is represented by at least two ninth indication information, where each ninth indication information corresponds to a port selection vector of a partial layer included in the codebook information.

Optionally, the port selection vector is represented by tenth indication information and eleventh indication information;

the tenth indication information has a length of

Or (b)

Wherein N is ₁ For the number of antenna ports in the horizontal direction, N ₂ For the number of antenna ports in the vertical direction, L ₀ Parameters determined by higher layers or parameters determined by terminal equipment;

the eleventh indication information has a length of

Optionally, the port selection vector is represented by twelfth indication information and thirteenth indication information;

the twelfth indication information has the length of

Or (b)

The twelfth indication information is used for indicating the starting position of the port selection vector of each layer contained in the codebook information; wherein N is ₁ For the number of antenna ports in the horizontal direction, N ₂ The number of antenna ports in the vertical direction;

the thirteenth indication information has a length of

Or (b)

Wherein v is the number of layers, L _W The window length of the port selection vector for each layer from the start position is 2L, which is the number of port selection vectors for each layer contained in the codebook information.

Optionally, the codebook information further includes non-zero coefficient position information.

Optionally, the non-zero coefficient position information is represented by fourteenth indication information;

the fourteenth indication information has a length of

Or (b)

Optionally, each layer of the non-zero coefficient position information is represented by 1 fourteenth indication information;

Optionally, the non-zero coefficient position information is represented by at least two fourteenth indication information, where each fourteenth indication information corresponds to a non-zero coefficient position of a partial layer included in the non-zero coefficient position information.

Optionally, the non-zero coefficient position information is represented by fifteenth indication information and sixteenth indication information;

the fifteenth indication information has a length of

Or (b)

the sixteenth indication information has a length of

Optionally, the terminal device receives a sum of non-zero coefficients.

Alternatively, the sum of the non-zero coefficients is of length

Or (b)

Is indicated by the indication information of (a); wherein K is ₀ Is the number of maximum non-zero coefficients.

Optionally, the method further comprises: a non-zero coefficient priority is received from the terminal device.

The embodiment of the application further provides a terminal device, and fig. 7 is a schematic structural diagram of a terminal device 700 according to an embodiment of the application, including:

a division module 710 for dividing the plurality of frequency domain subbands into at least one set of frequency domain subbands, each set of frequency domain subbands including a plurality of frequency domain units;

a selection module 720, configured to select a part or all of the frequency domain subband sets from the at least one frequency domain subband set;

a transmitting module 730, configured to transmit codebook information of the selected set of frequency domain subbands, where the codebook information includes at least one of: identification of the selected frequency domain subband set; the linear combination coefficient LCC corresponding to the selected frequency domain sub-band set; selecting a vector by a port; a frequency domain vector.

Optionally, the dividing module 710 is configured to: will N ₃ Dividing each PMI subband into O ₃ Each frequency domain subband set comprises N PMI subbands, and each PMI subband comprises 1 frequency domain unit; wherein N is ₃ Is a positive integer; o (O) ₃ Is a positive integer; n is equal to N ₃ /O ₃ 。

Optionally, the dividing module 710 is configured to: will have sequence number i+mO ₃ Dividing the PMI sub-band of the sequence number i into a frequency domain sub-band set; wherein N is ₃ Sequence numbers of the PMI sub-bands are respectively 0 and N ₃ ) Integers within the range; i is [0,O ] ₃ ) Integers within the range; m is an integer in the range of [0, N).

Optionally, the dividing module 710 is configured to: for N ₃ Dividing each PMI sub-band into O ₃ A frequency domain unit; extracting frequency domain units with the same sequence number from each PMI sub-band respectively, and forming the frequency domain units with the same sequence numberA frequency domain subband set, obtaining O ₃ Each frequency domain sub-band set comprises N frequency domain units; wherein N is ₃ Is a positive integer; o (O) ₃ Is a positive integer; n is equal to N ₃ 。

Optionally, the dividing module 710 is configured to:

for N ₃ Dividing each CQI sub-band into O ₃ A frequency domain unit; extracting frequency domain units with the same sequence number from each CQI sub-band respectively, and forming the frequency domain units with the same sequence number into a frequency domain sub-band set to obtain O ₃ A plurality of frequency domain subband sets, each frequency domain subband set comprising N ₃ A frequency domain unit; wherein N is ₃ Is a positive integer; o (O) ₃ Is a positive integer; n is equal to N ₃ 。

Optionally, the above terminal device, wherein,

N ₃ ＝N _sb R,

R∈{1,2,4,...,2 ⁿ and meet

Or (b)

R is a parameter determined by a high layer;

N _sb the number of CQI sub-bands;

is a predetermined parameter;

n is an integer.

Optionally, the above O ₃ Parameters determined for higher layers or fixed parameters.

Optionally, the above O ₃ The value of the method is at least one of the following:

O ₃ ＝R；

when r=4, O ₃ E {2,4}; when r=2, O ₃ ＝2；

O ₃ ＝2；

O ₃ ＝4；

O ₃ ＝R/2 ^m Wherein m is an integer;

O ₃ satisfy mod (N) ₃ ,O ₃ )＝0；

When N is ₃ When < T, O ₃ =1; otherwise, O ₃ ＞1；

When N is ₁ N ₂ < T or 2N ₁ N ₂ T or 2L < T or K ₀ When < T, O ₃ =1; when N is ₁ N ₂ Not less than T or 2N ₁ N ₂ T or 2L or more ₀ When not less than T, O ₃ > 1; wherein N is ₁ For the number of antenna ports in the horizontal direction, N ₂ The number of antenna ports in the vertical direction is T is a preset threshold, L is the number of beams, and K ₀ Is the number of maximum non-zero coefficients.

Optionally, the above O ₃ ＝2 ^m And is also provided with

Wherein m and n are integers.

Optionally, the above O ₃ ＝2 ^m And is also provided with

Wherein m is an integer.

Optionally, the selecting module 720 is configured to:

the equipment selects K frequency domain subband sets from the at least one frequency domain subband set according to at least one of high-layer parameter configuration, a preset selection mode and dynamic indication information, wherein K is a positive integer.

Optionally, the selectable values of the first frequency domain vector include:

a vector of each row or column of elements of the K-order hadamard matrix.

Optionally, the length of the first indication information is

Or K; wherein,

m is the number of first frequency domain vectors contained in the codebook information;

K _nz is a number of non-zero coefficients.

Optionally, the length of the first indication information is

Or (b)

The length of the first indication information corresponding to each layer is

the second indication information has the length of

the third indication information has the length of

the length of the fourth indication information is

The fourth indication information is used for indicating the information contained in the codebookThe starting position of the first frequency domain vector of each layer;

the length of the fifth indication information is

Optionally, the length of the second frequency domain vector and the number of possible values are N.

the length of the sixth indication information is determined by at least one of:

N；

the number of second frequency domain vectors contained in the codebook information;

the number of layers;

layer sequence number.

Optionally, the length of the sixth indication information is

Wherein,

Optionally, the length of the sixth indication information is

Wherein,

v is the number of layers.

the seventh indication information has the length of

the length of the eighth indication information is

Optionally, the port selection vector is represented by a ninth indication information;

the length of the ninth indication information is determined by at least one of: n (N) ₁ ；N ₂ The method comprises the steps of carrying out a first treatment on the surface of the The number of port selection vectors contained in the codebook information; the number of layers; wherein N is ₁ For the number of antenna ports in the horizontal direction, N ₂ Is the number of antenna ports in the vertical direction.

Optionally, the length of the ninth indication information is

Or (b)

Wherein,

Optionally, the length of the ninth indication information is

Or (b)

Wherein,

2L is the number of port selection vectors for each layer contained in the codebook information.

v is the number of layers.

the length of the ninth indication information corresponding to each layer is

Or (b)

Wherein,

2L _l the number of vectors is selected for the ports of the first layer included in the codebook information.

N ₁ The number of antenna ports in the horizontal direction;

N ₂ is the number of antenna ports in the vertical direction.

The tenth indication information has a length of

Or (b)

the eleventh indication information has a length of

the twelfth indication information has the length of

Or (b)

the thirteenth indication information has a length of

Or (b)

the fourteenth indication information has a length of

2LM、

Or (b)

Wherein,

m is the number of first frequency domain vectors of each layer contained in the codebook information;

K _nz the number of non-zero coefficients for each layer contained in the codebook information.

the fifteenth indication information has a length of

Or (b)

the sixteenth indication information has a length of

Optionally, the foregoing sending module 730 is further configured to send a sum of non-zero coefficients.

Alternatively, the sum of the non-zero coefficients is of length

Or (b)

Optionally, the sending module 730 is further configured to send a non-zero coefficient priority.

It should be understood that the foregoing and other operations and/or functions of the modules in the terminal device according to the embodiments of the present application are respectively for implementing the corresponding flow of the terminal device in the method 200 of fig. 2, and are not described herein for brevity.

The embodiment of the present application further proposes a network device, and fig. 8 is a schematic structural diagram of a network device 800 according to an embodiment of the present application, including:

a receiving module 810, configured to receive codebook information of a frequency domain subband set selected by a terminal device, where the codebook information includes at least one of the following:

Optionally, the selectable values of the first frequency domain vector include:

a vector of each row or column of elements of the K-order hadamard matrix.

Optionally, the length of the first indication information is

Or K; wherein,

K _nz is a number of non-zero coefficients.

Optionally, the length of the first indication information is

Or (b)

Wherein,

v is the number of layers.

the length of the first indication information corresponding to each layer is

Wherein,

the second indication information has the length of

the third indication information has the length of

the length of the fourth indication information is

the length of the fifth indication information is

Optionally, the length of the sixth indication information is

Wherein,

Optionally, the length of the sixth indication information is

Wherein,

v is the number of layers.

the seventh indication information has the length of

the length of the eighth indication information is

Optionally, the length of the ninth indication information is

Or (b)

Wherein,

Optionally, the length of the ninth indication information is

Or (b)

Wherein,

v is the number of layers.

the length of the ninth indication information corresponding to each layer is

Or (b)

Wherein,

N ₁ The number of antenna ports in the horizontal direction;

N ₂ is the number of antenna ports in the vertical direction.

the tenth indication information has a length of

Or (b)

The eleventh indication information has a length of

the twelfth indication information has the length of

Or (b)

the thirteenth indication information has a length of

Or (b)

the fourteenth indication information has a length of

2LM、

Or (b)

Wherein,

the fifteenth indication information has a length of

Or (b)

the sixteenth indication information has a length of

Optionally, the receiving module 810 is further configured to receive a sum of non-zero coefficients from the terminal device.

Alternatively, the sum of the non-zero coefficients is of length

Or (b)

Optionally, the receiving module 810 is further configured to receive a non-zero coefficient priority from the terminal device.

It should be appreciated that the foregoing and other operations and/or functions of the modules in the network device according to the embodiments of the present application are respectively for implementing the corresponding flow of the network device in the method 600 of fig. 6, and are not described herein for brevity.

Fig. 9 is a schematic structural diagram of a communication device 900 according to an embodiment of the present application. The communication device 900 shown in fig. 9 comprises a processor 910, from which the processor 910 may call and run a computer program to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 9, the communication device 900 may also include a memory 920. Wherein the processor 910 may invoke and run a computer program from the memory 920 to implement the methods in the embodiments of the present application.

Wherein the memory 920 may be a separate device from the processor 910 or may be integrated in the processor 910.

Optionally, as shown in fig. 9, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

Wherein transceiver 930 may include a transmitter and a receiver. Transceiver 930 may further include antennas, the number of which may be one or more.

Optionally, the communication device 900 may be a terminal device in the embodiment of the present application, and the communication device 900 may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 900 may be a network device in the embodiment of the present application, and the communication device 900 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Fig. 10 is a schematic structural diagram of a chip 1000 according to an embodiment of the present application. The chip 1000 shown in fig. 10 includes a processor 1010, and the processor 1010 may call and run a computer program from a memory to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 10, the chip 1000 may further include a memory 1020. Wherein the processor 1010 may call and run a computer program from the memory 1020 to implement the methods in embodiments of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, the chip 1000 may also include an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or chips, and in particular, may obtain information or data sent by the other devices or chips.

Optionally, the chip 1000 may further include an output interface 1040. Wherein the processor 1010 may control the output interface 1040 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip may be applied to a terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The processors mentioned above may be general purpose processors, digital signal processors (digital signal processor, DSP), off-the-shelf programmable gate arrays (field programmable gate array, FPGA), application specific integrated circuits (application specific integrated circuit, ASIC) or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor.

The memory mentioned above may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM).

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), or the like.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes or substitutions are covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A codebook transmission method, comprising:

the terminal equipment divides a plurality of frequency domain sub-bands into at least one frequency domain sub-band set, and each frequency domain sub-band set comprises a plurality of frequency domain units;

the terminal equipment selects part or all of the frequency domain sub-band sets from the at least one frequency domain sub-band set, and sends codebook information of the selected frequency domain sub-band set, wherein the codebook information comprises at least one of the following:

An identification of the selected frequency domain subband set;

the linear combination coefficient LCC corresponding to the selected frequency domain sub-band set;

selecting a vector by a port;

a frequency domain vector.
The method of claim 1, wherein the terminal device dividing the plurality of frequency domain subbands into at least one set of frequency domain subbands, each set of frequency domain subbands comprising a plurality of frequency domain units comprises:

the terminal equipment will N ₃ Dividing each PMI subband into O ₃ Each frequency domain subband set comprises N PMI subbands, and each PMI subband comprises 1 frequency domain unit; wherein,

the N is ₃ Is a positive integer;

the O is ₃ Is a positive integer;

the N is equal to N ₃ /O ₃ 。
The method of claim 2, wherein the terminal device is to N ₃ Dividing each PMI subband into O ₃ A set of frequency domain subbands, comprising:

will have sequence number i+mO ₃ Dividing the PMI sub-band of the sequence number i into a frequency domain sub-band set; wherein,

the N is ₃ Sequence numbers of the PMI sub-bands are respectively 0 and N ₃ ) Integers within the range;

the i is [0,O ] ₃ ) Integers within the range;

and m is an integer in the range of 0, N).
The method of claim 1, wherein the terminal device dividing the plurality of frequency domain subbands into at least one set of frequency domain subbands, each set of frequency domain subbands comprising a plurality of frequency domain units comprises:

Terminal equipment pair N ₃ Dividing each PMI sub-band into O ₃ A frequency domain unit;

extracting frequency domain units with the same sequence number from each PMI sub-band respectively, and forming the frequency domain units with the same sequence number into a frequency domain sub-band set to obtain O ₃ Each frequency domain sub-band set comprises N frequency domain units; wherein,

the N is ₃ Is a positive integer;

the O is ₃ Is a positive integer;

the N is equal to N ₃ 。
The method of claim 1, wherein the terminal device dividing the plurality of frequency domain subbands into at least one set of frequency domain subbands, each set of frequency domain subbands comprising a plurality of frequency domain units comprises:

terminal equipment pair N ₃ Dividing each CQI sub-band into O ₃ A frequency domain unit;

extracting frequency domain units with the same sequence number from each CQI sub-band respectively, and forming the frequency domain units with the same sequence number into a frequency domain sub-band set to obtain O ₃ A plurality of frequency domain subband sets, each of said frequency domain subband sets comprising N ₃ A frequency domain unit; wherein,

the N is ₃ Is a positive integer;

the O is ₃ Is a positive integer;

the N is equal to N ₃ 。
The method according to claim 2 to 5, wherein,

The N is ₃ ＝N _sb R,

R is {1,2,4,., 2 } ⁿ And meet
Or (b)

R is a parameter determined by a high layer;

the N is _sb The number of CQI sub-bands;

the said
Is a predetermined parameter;

and n is an integer.
The method of claim 6, wherein the O ₃ Parameters determined for higher layers or fixed parameters.
The method of claim 6 or 7, wherein the O ₃ The value of the method is at least one of the following:

O ₃ ＝R；

when r=4, the O ₃ E {2,4}; when r=2, the O ₃ ＝2；

O ₃ ＝2；

O ₃ ＝4；

O ₃ ＝R/2 ^m Wherein m is an integer;

the O is ₃ Satisfy mod (N) ₃ ,O ₃ )＝0；

When N is ₃ When < T, O ₃ =1; otherwise, O ₃ ＞1；

When N is ₁ N ₂ < T or 2N ₁ N ₂ T or 2L < T or K ₀ When < T, O ₃ =1; when N is ₁ N ₂ Not less than T or 2N ₁ N ₂ T or 2L or more ₀ When not less than T, O ₃ > 1; wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ The number of antenna ports in the vertical direction is the preset threshold, the number of beams is L, and the number of beams is K ₀ Is the number of maximum non-zero coefficients.
The method of claim 6 or 7, wherein the O ₃ ＝2 ^m And is also provided with
Wherein m and n are integers.
The method of claim 6 or 7, wherein the O ₃ ＝2 ^m And is also provided with
Wherein m is an integer.
The method according to any of claims 1 to 10, wherein the terminal device selects a part or all of the set of frequency domain subbands from the at least one set of frequency domain subbands, comprising:

And the terminal equipment selects K frequency domain subband sets from the at least one frequency domain subband set according to at least one of high-layer parameter configuration, a preset selection mode and dynamic indication information, wherein K is a positive integer.
The method of any of claims 2 to 11, wherein the frequency domain vector comprises a first frequency domain vector and/or a second frequency domain vector.
The method of claim 12, wherein the length of the first frequency domain vector and the number of selectable values is K, the K being the number of the selected set of frequency domain subbands.
The method of claim 13, wherein the selectable values of the first frequency domain vector comprise:

vectors formed by each row or each column of elements of the K-order identity matrix; or,

a vector of each row or column of elements of the K-order hadamard matrix.
The method of claim 13, wherein the first frequency domain vector is a discrete fourier transform, DFT, vector.
The method of any of claims 13 to 15, wherein the first frequency domain vector is represented with first indication information;

the length of the first indication information is determined by at least one of the following:

the K;

The number of the first frequency domain vectors contained in the codebook information;

a number of non-zero coefficients;

number of layers.
The method of claim 16, wherein the first indication information is of length

Or K; wherein,

the M is the number of first frequency domain vectors contained in the codebook information;

the K is _nz Is the number of the non-zero coefficients.
The method of claim 16, wherein the first indication information is of length

Or (b)
Wherein,

the M is the number of first frequency domain vectors of each layer contained in the codebook information;

and v is the number of layers.
The method of any of claims 13 to 15, wherein the first frequency domain vector is represented with 1 first indication information for each layer;

the length of the first indication information corresponding to each layer is
Wherein,

the M is _l The number of first frequency domain vectors of the first layer included in the codebook information.
The method of any of claims 13 to 15, wherein the first frequency-domain vector is represented by at least two first indication information, each corresponding to a first frequency-domain vector of a partial layer contained in the codebook information.
The method of any of claims 13 to 15, wherein the first frequency domain vector is represented with second and third indication information;

The length of the second indication information is
Wherein the M ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the length of the third indication information is
Wherein v is the number of layers, and M is the number of first frequency domain vectors of each layer included in the codebook information.
The method of any of claims 13 to 15, wherein the first frequency domain vector is represented with fourth and fifth indication information;

the length of the fourth indication information is
The fourth indication information is used for indicating the starting position of the first frequency domain vector of each layer contained in the codebook information;

the length of the fifth indication information is
Wherein v is the number of layers; the K is _W And for the window length of the first frequency domain vector of each layer from the starting position, M is the number of the first frequency domain vectors of each layer contained in the codebook information.
The method of claim 12, wherein the length and the number of possible values of the second frequency domain vector are the N.
The method of claim 23, wherein the second frequency domain vector is a vector of length N and a fixed value for each element.
The method of claim 23, wherein the second frequency domain vector is a discrete fourier transform, DFT, vector.
The method of claim 23 or 25, wherein the second frequency domain vector is represented with sixth indication information;

the length of the sixth indication information is determined by at least one of: the N; the number of second frequency domain vectors contained in the codebook information; the number of layers; layer sequence number.
The method of claim 26, wherein the sixth indication information is of length
Wherein,

and M is the number of second frequency domain vectors contained in the codebook information.
The method of claim 26, wherein the sixth indication information is of length
Wherein,

the M is the number of second frequency domain vectors of each layer contained in the codebook information;

and v is the number of layers.
The method of claim 23 or 25, wherein the second frequency domain vector is represented with seventh and eighth indication information;

the seventh indication information has a length of
Wherein the M ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the length of the eighth indication information is
Wherein v is the number of layers, and M is the number of second frequency domain vectors of each layer included in the codebook information.
The method of any one of claims 1 to 29, wherein the port selection vector is represented with a ninth indication information;

the length of the ninth indication information is determined by at least one of: n (N) ₁ ；N ₂ The method comprises the steps of carrying out a first treatment on the surface of the The number of port selection vectors contained in the codebook information; the number of layers; wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ Is the number of antenna ports in the vertical direction.
The method of claim 30, wherein the ninth indication information has a length of
Or (b)
Wherein,

and 2L is the number of port selection vectors contained in the codebook information.
The method of claim 30, wherein the ninth indication information has a length of

Or (b)
Wherein,

the 2L is the number of port selection vectors of each layer contained in the codebook information;

and v is the number of layers.
The method of any of claims 1 to 29, wherein the port selection vector is represented with 1 ninth indication information for each layer;

the length of the ninth indication information corresponding to each layer is
Or (b)
Wherein,

The 2L _l Selecting the number of vectors for the ports of the first layer contained in the codebook information;

the N is ₁ The number of antenna ports in the horizontal direction;

the N is ₂ Is the number of antenna ports in the vertical direction.
The method of any one of claims 1 to 29, wherein the port selection vector is represented by at least two ninth indication information, each of the ninth indication information corresponding to a port selection vector of a partial layer included in the codebook information.
The method of any one of claims 1 to 29, wherein the port selection vector is represented with tenth indication information and eleventh indication information;

the tenth indication information has a length of
Or (b)
Wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ For the number of antenna ports in the vertical direction, L ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the eleventh indication information has a length of
Wherein v is the number of layers, and 2L is the number of port selection vectors of each layer included in the codebook information.
The method of any one of claims 1 to 29, wherein the port selection vector is represented using twelfth indication information and thirteenth indication information;

The twelfth indication information has a length of
Or (b)
The twelfth indication information is used for indicating the starting position of the port selection vector of each layer contained in the codebook information; wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ The number of antenna ports in the vertical direction;

the thirteenth indication information has a length of
Or (b)
Wherein v is the number of layers, L _W Window length of the port selection vector of each layer from the starting position is selected for each layer, and 2L is the number of the port selection vectors of each layer contained in the codebook information.
A method according to any one of claims 12 to 36, wherein the codebook information further comprises non-zero coefficient position information.
The method of claim 37, wherein the non-zero coefficient position information is represented with fourteenth indication information;

the fourteenth indication information has a length of
2LM、
Or (b)
Wherein,

the L is the number of beams;

the K is ₀ The number of the maximum non-zero coefficients;

the M is the number of first frequency domain vectors contained in the codebook information;

the N is ₁ The number of antenna ports in the horizontal direction;

the N is ₂ The number of antenna ports in the vertical direction;

the K is _nz Is a number of non-zero coefficients.
The method of claim 37, each layer of the non-zero coefficient position information being represented with 1 fourteenth indication information;

the length of the fourteenth indication information corresponding to each layer is
Wherein,

the M is the number of first frequency domain vectors of each layer contained in the codebook information;

the K is _nz The number of non-zero coefficients for each layer included in the codebook information.
The method of claim 37, wherein the non-zero coefficient position information is represented using at least two fourteenth indication information, each of the fourteenth indication information corresponding to a non-zero coefficient position of a partial layer included in the non-zero coefficient position information.
The method of claim 37, wherein the non-zero coefficient position information is represented with fifteenth indication information and sixteenth indication information;

the fifteenth indication information has a length of
Or (b)
Wherein L is the number of beams, M is the number of first frequency domain vectors of each layer contained in the codebook information, K is the number of second frequency domain vectors of each layer contained in the codebook information _nz,0 Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the sixteenth indication information has a length of
Wherein v is the number of layers and K is _nz,i The number of non-zero coefficients of the i-th layer included in the codebook information.
The method of any one of claims 1 to 41, further comprising: the terminal device sends a sum of non-zero coefficients.
The method of claim 42, further comprising: the sum of the nonzero coefficients adopts the length of
Or (b)
Is indicated by the indication information of (a); wherein the K is ₀ Is the number of maximum non-zero coefficients.
The method of any one of claims 1 to 43, further comprising: the terminal device sends a non-zero coefficient priority.
A codebook receiving method, comprising:

the network equipment receives codebook information of a frequency domain sub-band set selected by the terminal equipment, wherein the codebook information comprises at least one of the following items:

an identification of the selected frequency domain subband set;

the linear combination coefficient LCC corresponding to the selected frequency domain sub-band set;

selecting a vector by a port;

a frequency domain vector.
The method of claim 45, wherein the frequency domain vector comprises a first frequency domain vector and/or a second frequency domain vector.
A method as defined in claim 46, wherein the length of the first frequency-domain vector and the number of selectable values is K, the K being the number of the selected set of frequency-domain subbands.
The method of claim 47, wherein the selectable values of the first frequency domain vector comprise:

vectors formed by each row or each column of elements of the K-order identity matrix; or,

a vector of each row or column of elements of the K-order hadamard matrix.
The method of claim 46, wherein the first frequency domain vector is a discrete fourier transform, DFT, vector.
The method of any of claims 46 to 49, wherein the first frequency domain vector is represented with first indication information;

the length of the first indication information is determined by at least one of the following: the K; the number of the first frequency domain vectors contained in the codebook information; a number of non-zero coefficients; number of layers.
The method of claim 50, wherein the first indication information has a length of

Or K; wherein,

the M is the number of first frequency domain vectors contained in the codebook information;

the K is _nz Is the number of the non-zero coefficients.
The method of claim 50, wherein the first indication information has a length of

Or (b)
Wherein,

the M is the number of first frequency domain vectors of each layer contained in the codebook information;

and v is the number of layers.
The method of any of claims 46 to 49, wherein the first frequency domain vector is represented with 1 first indication information for each layer;

the length of the first indication information corresponding to each layer is
Wherein,

the M is _l The number of first frequency domain vectors of the first layer included in the codebook information.
A method as defined in any one of claims 46 to 49, wherein the first frequency-domain vector is represented by at least two first indication information, each corresponding to a first frequency-domain vector of a partial layer contained in the codebook information.
The method of any of claims 46 to 49, wherein the first frequency domain vector is represented with second and third indication information;

the length of the second indication information is
Wherein the M ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the length of the third indication information is
Wherein v is the number of layers, and M is the number of first frequency domain vectors of each layer included in the codebook information.
The method of any of claims 46 to 49, wherein the first frequency domain vector is represented with fourth and fifth indication information;

The length of the fourth indication information is
The fourth indication information is used for indicating the starting position of the first frequency domain vector of each layer contained in the codebook information;

the length of the fifth indication information is
Wherein v is the number of layers; the K is _W And for the window length of the first frequency domain vector of each layer from the starting position, M is the number of the first frequency domain vectors of each layer contained in the codebook information.
A method as defined in claim 46 wherein the length and the number of possible values of the second frequency-domain vector is N, and N is the number of frequency-domain units included in each of the frequency-domain subband sets.
The method of claim 57 wherein the second frequency domain vector is a vector of length N and a fixed value for each element.
The method of claim 57, wherein the second frequency domain vector is a discrete fourier transform, DFT, vector.
The method of claim 57 or 59, wherein the second frequency domain vector is represented with sixth indication information;

the length of the sixth indication information is determined by at least one of: the N; the number of second frequency domain vectors contained in the codebook information; the number of layers; layer sequence number.
The method of claim 60, wherein the sixth indication information is of length
Wherein,

and M is the number of second frequency domain vectors contained in the codebook information.
The method of claim 60, wherein the sixth indication information is of length
Wherein,

the M is the number of second frequency domain vectors of each layer contained in the codebook information;

and v is the number of layers.
The method of claim 57 or 59, wherein the second frequency domain vector is represented with seventh and eighth indication information;

the seventh indication information has a length of
Wherein the M ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the length of the eighth indication information is
Wherein v is the number of layers, and M is the number of second frequency domain vectors of each layer included in the codebook information.
The method of any one of claims 45 to 63, wherein the port selection vector is represented using a ninth indication information;

the length of the ninth indication information is determined by at least one of: n (N) ₁ ；N ₂ The method comprises the steps of carrying out a first treatment on the surface of the The number of port selection vectors contained in the codebook information; the number of layers; wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ Is the number of antenna ports in the vertical direction.
The method of claim 64, wherein the ninth indication information has a length of
Or (b)
Wherein,

and 2L is the number of port selection vectors contained in the codebook information.
The method of claim 64, wherein the ninth indication information has a length of

Or (b)
Wherein,

the 2L is the number of port selection vectors of each layer contained in the codebook information;

and v is the number of layers.
The method of any one of claims 45 to 63, wherein the port selection vector is represented with 1 ninth indication information for each layer;

the length of the ninth indication information corresponding to each layer is
Or (b)
Wherein,

the 2L _l Selecting the number of vectors for the ports of the first layer contained in the codebook information;

the N is ₁ The number of antenna ports in the horizontal direction;

the N is ₂ Is the number of antenna ports in the vertical direction.
The method of any one of claims 45 to 63, wherein the port selection vector is represented by at least two ninth indication information, each of the ninth indication information corresponding to a port selection vector of a partial layer included in the codebook information.
The method of any one of claims 45 to 63, wherein the port selection vector is represented using tenth indication information and eleventh indication information;

the tenth indication information has a length of
Or (b)
Wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ For the number of antenna ports in the vertical direction, L ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the eleventh indication information has a length of
Wherein v is the number of layers, and 2L is the number of port selection vectors of each layer included in the codebook information.
The method of any one of claims 45 to 63, wherein the port selection vector is represented using twelfth indication information and thirteenth indication information;

the twelfth indication information has a length of
Or (b)
The twelfth indication information is used for indicating the starting position of the port selection vector of each layer contained in the codebook information; wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ The number of antenna ports in the vertical direction;

the thirteenth indication information has a length of
Or (b)
Wherein v is the number of layers, L _W Window length of the port selection vector of each layer from the starting position is selected for each layer, and 2L is the number of the port selection vectors of each layer contained in the codebook information.
A method as claimed in any one of claims 46 to 70, wherein the codebook information further comprises non-zero coefficient position information.
The method of claim 71, wherein the non-zero coefficient position information is represented with fourteenth indication information;

the fourteenth indication information has a length of
2LM、
Or (b)
Wherein,

the L is the number of beams;

the K is ₀ The number of the maximum non-zero coefficients;

the M is the number of first frequency domain vectors contained in the codebook information;

the N is ₁ The number of antenna ports in the horizontal direction;

the N is ₂ The number of antenna ports in the vertical direction;

the K is _nz Is a number of non-zero coefficients.
The method of claim 71, each layer of the non-zero coefficient position information being represented with 1 fourteenth indication information;

the length of the fourteenth indication information corresponding to each layer is
Wherein,

the M is the number of first frequency domain vectors of each layer contained in the codebook information;

the K is _nz The number of non-zero coefficients for each layer included in the codebook information.
A method as defined in claim 71 in which the non-zero coefficient position information is represented by at least two fourteenth indication information, each corresponding to a non-zero coefficient position of a partial layer contained in the non-zero coefficient position information.
The method of claim 71, wherein the non-zero coefficient position information is represented with fifteenth indication information and sixteenth indication information;

the fifteenth indication information has a length of
Or (b)
Wherein L is the number of beams, M is the number of first frequency domain vectors of each layer contained in the codebook information, K is the number of second frequency domain vectors of each layer contained in the codebook information _nz,0 Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the sixteenth indication information has a length of
Wherein v is the number of layers and K is _nz,i The number of non-zero coefficients of the i-th layer included in the codebook information.
The method of any one of claims 46 to 75, further comprising: a sum of non-zero coefficients is received from the terminal device.
The method of claim 76, further comprising: the sum of the nonzero coefficients adopts the length of

Is indicated by the indication information of (a); wherein the K is ₀ Is the number of maximum non-zero coefficients.
The method of any one of claims 46 to 77, further comprising: a non-zero coefficient priority is received from the terminal device.
A terminal device, comprising:

a dividing module, configured to divide a plurality of frequency domain subbands into at least one frequency domain subband set, where each frequency domain subband set includes a plurality of frequency domain units;

A selection module, configured to select a part or all of the frequency domain subband sets from the at least one frequency domain subband set;

a transmitting module, configured to transmit codebook information of the selected frequency domain subband set, where the codebook information includes at least one of the following:

an identification of the selected frequency domain subband set;

the linear combination coefficient LCC corresponding to the selected frequency domain sub-band set;

selecting a vector by a port;

a frequency domain vector.
The terminal device of claim 79, wherein the partitioning module is configured to:

will N ₃ Dividing each PMI subband into O ₃ Each frequency domain subband set comprises N PMI subbands, and each PMI subband comprises 1 frequency domain unit; wherein,

the N is ₃ Is a positive integer;

the O is ₃ Is a positive integer;

the N is equal to N ₃ /O ₃ 。
The terminal device of claim 80, wherein said partitioning module is configured to:

will have sequence number i+mO ₃ PMI subband partitioning to sequence numberi a set of frequency domain subbands; wherein,

the N is ₃ Sequence numbers of the PMI sub-bands are respectively 0 and N ₃ ) Integers within the range;

the i is [0,O ] ₃ ) Integers within the range;

and m is an integer in the range of 0, N).
The terminal device of claim 79, wherein the partitioning module is configured to:

For N ₃ Dividing each PMI sub-band into O ₃ A frequency domain unit;

extracting frequency domain units with the same sequence number from each PMI sub-band respectively, and forming the frequency domain units with the same sequence number into a frequency domain sub-band set to obtain O ₃ Each frequency domain sub-band set comprises N frequency domain units; wherein,

the N is ₃ Is a positive integer;

the O is ₃ Is a positive integer;

the N is equal to N ₃ 。
The terminal device of claim 79, wherein the partitioning module is configured to:

for N ₃ Dividing each CQI sub-band into O ₃ A frequency domain unit;

extracting frequency domain units with the same sequence number from each CQI sub-band respectively, and forming the frequency domain units with the same sequence number into a frequency domain sub-band set to obtain O ₃ A plurality of frequency domain subband sets, each of said frequency domain subband sets comprising N ₃ A frequency domain unit; wherein,

the N is ₃ Is a positive integer;

the O is ₃ Is a positive integer;

the N is equal to N ₃ 。
The terminal device of any of claims 80 to 83, wherein,

the N is ₃ ＝N _sb R,

R is {1,2,4,., 2 } ⁿ And meet
Or (b)

R is a parameter determined by a high layer;

the N is _sb The number of CQI sub-bands;

The said
Is a predetermined parameter;

and n is an integer.
The terminal device of claim 84, wherein said O ₃ Parameters determined for higher layers or fixed parameters.
The terminal device of claim 84 or 85, wherein the O ₃ The value of the method is at least one of the following:

O ₃ ＝R；

when r=4, the O ₃ E {2,4}; when r=2, the O ₃ ＝2；

O ₃ ＝2；

O ₃ ＝4；

O ₃ ＝R/2 ^m Wherein m is an integer;

the O is ₃ Satisfy mod (N) ₃ ,O ₃ )＝0；

When N is ₃ When < T, O ₃ =1; otherwise, O ₃ ＞1；

When N is ₁ N ₂ < T or 2N ₁ N ₂ T or 2L < T or K ₀ When < T, O ₃ =1; when N is ₁ N ₂ Not less than T or 2N ₁ N ₂ T or 2L or more ₀ When not less than T, O ₃ > 1; wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ The number of antenna ports in the vertical direction is the preset threshold, the number of beams is L, and the number of beams is K ₀ Is the number of maximum non-zero coefficients.
The terminal device of claim 84 or 85, wherein the O ₃ ＝2 ^m And is also provided with
Wherein m and n are integers.
The terminal device of claim 84 or 85, wherein the O ₃ ＝2 ^m And is also provided with
Wherein m is an integer.
The terminal device of any of claims 79 to 88, wherein the selection module is configured to:

the equipment selects K frequency domain subband sets from the at least one frequency domain subband set according to at least one of high-layer parameter configuration, a preset selection mode and dynamic indication information, wherein K is a positive integer.
The terminal device of any of claims 80 to 99, wherein the frequency domain vector comprises a first frequency domain vector and/or a second frequency domain vector.
The terminal device of claim 90, wherein a length of the first frequency-domain vector and a number of selectable values are K, the K being a number of the selected set of frequency-domain subbands.
The terminal device of claim 91, wherein said selectable values of said first frequency domain vector include:

vectors formed by each row or each column of elements of the K-order identity matrix; or,

a vector of each row or column of elements of the K-order hadamard matrix.
The terminal device of claim 91, wherein said first frequency domain vector is a discrete fourier transform, DFT, vector.
The terminal device of any of claims 91 to 93, wherein the first frequency domain vector is represented with first indication information;

the length of the first indication information is determined by at least one of the following:

the K;

the number of the first frequency domain vectors contained in the codebook information;

a number of non-zero coefficients;

number of layers.
The terminal device of claim 94, wherein said first indication information has a length of

Or K; wherein,

the M is the number of first frequency domain vectors contained in the codebook information;

the K is _nz Is the number of the non-zero coefficients.
The terminal device of claim 94, wherein said first indication information has a length of

Or (b)
Wherein,

the M is the number of first frequency domain vectors of each layer contained in the codebook information;

and v is the number of layers.
The terminal device of any of claims 91 to 93, wherein the first frequency domain vector is represented with 1 first indication information for each layer;

the length of the first indication information corresponding to each layer is
Wherein,

the M is _l The number of first frequency domain vectors of the first layer included in the codebook information.
The terminal device of any of claims 91 to 93, wherein the first frequency-domain vector is represented by at least two first indication information, each of the first indication information corresponding to a first frequency-domain vector of a partial layer contained in the codebook information.
The terminal device of any of claims 91 to 93, wherein the first frequency domain vector is represented with second indication information and third indication information;

the length of the second indication information is
Wherein the M ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the length of the third indication information is
Wherein v is the number of layers, and M is the number of first frequency domain vectors of each layer included in the codebook information.
The terminal device of any of claims 91 to 93, wherein the first frequency domain vector is represented with fourth and fifth indication information;

the length of the fourth indication information is
The fourth indication information is used for indicating the starting position of the first frequency domain vector of each layer contained in the codebook information;

the length of the fifth indication information is
Wherein v is the number of layers; the K is _W And for the window length of the first frequency domain vector of each layer from the starting position, M is the number of the first frequency domain vectors of each layer contained in the codebook information.
The terminal device of claim 90, wherein the length and the number of possible values of the second frequency domain vector are N.
The terminal device of claim 101, wherein the second frequency domain vector is a vector of length N and a fixed value for each element.
The terminal device of claim 101, wherein said second frequency domain vector is a discrete fourier transform, DFT, vector.
The terminal device of claim 101 or 103, wherein the second frequency domain vector is represented with sixth indication information;

the length of the sixth indication information is determined by at least one of: the N; the number of second frequency domain vectors contained in the codebook information; the number of layers; layer sequence number.
The terminal device of claim 104, wherein said sixth indication information has a length of
Wherein,

and M is the number of second frequency domain vectors contained in the codebook information.
The terminal device of claim 104, wherein said sixth indication information has a length of
Wherein,

the M is the number of second frequency domain vectors of each layer contained in the codebook information;

and v is the number of layers.
The terminal device of claim 101 or 103, wherein the second frequency domain vector is represented with seventh indication information and eighth indication information;

the seventh indication information has a length of
Wherein the M ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

The length of the eighth indication information is
Wherein v is the number of layers, and M is the number of second frequency domain vectors of each layer included in the codebook information.
A terminal device according to any of claims 79 to 107, wherein said port selection vector is represented by a ninth indication information;

the length of the ninth indication information is determined by at least one of: n (N) ₁ ；N ₂ The method comprises the steps of carrying out a first treatment on the surface of the The number of port selection vectors contained in the codebook information; the number of layers; wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ Is the number of antenna ports in the vertical direction.
The terminal device of claim 108, wherein said ninth indication information has a length of
Or (b)
Wherein,

and 2L is the number of port selection vectors contained in the codebook information.
The terminal device of claim 108, wherein said ninth indication information has a length of

Or (b)
Wherein,

the 2L is the number of port selection vectors of each layer contained in the codebook information;

and v is the number of layers.
A terminal device according to any of claims 79 to 107, wherein said port selection vector is represented with 1 ninth indication information for each layer;

The length of the ninth indication information corresponding to each layer is
Or (b)
Wherein,

the 2L _l Selecting the number of vectors for the ports of the first layer contained in the codebook information;

the N is ₁ The number of antenna ports in the horizontal direction;

the N is ₂ Is the number of antenna ports in the vertical direction.
The terminal device of any of claims 79 to 107, wherein the port selection vector is represented by at least two ninth indication information, each of the ninth indication information corresponding to a port selection vector of a partial layer contained in the codebook information.
The terminal device of any of claims 79 to 107, wherein the port selection vector is represented by tenth indication information and eleventh indication information;

the tenth indication information has a length of
Or (b)
Wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ For the number of antenna ports in the vertical direction, L ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the eleventh indication information has a length of
Wherein v is the number of layers, and 2L is the number of port selection vectors of each layer included in the codebook information.
The terminal device of any of claims 79 to 107, wherein the port selection vector is represented with a twelfth indication information and a thirteenth indication information;

The twelfth indication information has a length of
Or (b)
The twelfth indication information is used for indicating the starting position of the port selection vector of each layer contained in the codebook information; wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ The number of antenna ports in the vertical direction;

the thirteenth indication information has a length of
Or (b)
Wherein v is the number of layers, L _W Window length of the port selection vector of each layer from the starting position is selected for each layer, and 2L is the number of the port selection vectors of each layer contained in the codebook information.
A terminal device as claimed in any of claims 90 to 114, wherein the codebook information further comprises non-zero coefficient position information.
The terminal device of claim 115, wherein said non-zero coefficient position information is represented with a fourteenth indication information;

the fourteenth indication information has a length of
2LM、
Or (b)
Wherein L is the number of beams; the K is ₀ The number of the maximum non-zero coefficients; the M is the number of first frequency domain vectors contained in the codebook information; the N is ₁ The number of antenna ports in the horizontal direction; the N is ₂ The number of antenna ports in the vertical direction; the K is _nz Is a number of non-zero coefficients.
The terminal device of claim 115, each layer of said non-zero coefficient position information being represented with 1 fourteenth indication information;

the length of the fourteenth indication information corresponding to each layer is
Wherein,

the M is the number of first frequency domain vectors of each layer contained in the codebook information;

the K is _nz The number of non-zero coefficients for each layer included in the codebook information.
The terminal device of claim 115, wherein said non-zero coefficient position information is represented by at least two fourteenth indication information, each of said fourteenth indication information corresponding to a non-zero coefficient position of a partial layer contained in said non-zero coefficient position information.
The terminal device of claim 115, wherein said non-zero coefficient position information is represented with fifteenth indication information and sixteenth indication information;

the fifteenth indication information has a length of
Or (b)
Wherein L is the number of beams, M is the number of first frequency domain vectors of each layer contained in the codebook information, K is the number of second frequency domain vectors of each layer contained in the codebook information _nz,0 Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the sixteenth indication information has a length of
Wherein v is the number of layers and K is _nz,i The number of non-zero coefficients of the i-th layer included in the codebook information.
The terminal device of any of claims 79 to 119, the transmitting module further configured to transmit a sum of non-zero coefficients.
The terminal device of claim 120, wherein a sum of said non-zero coefficients takes a length of
Or (b)
Is indicated by the indication information of (a); wherein the K is ₀ Is the number of maximum non-zero coefficients.
The terminal device of any of claims 79 to 121, the sending module further configured to send a non-zero coefficient priority.
A network device, comprising:

the receiving module is used for receiving codebook information of the frequency domain sub-band set selected by the terminal equipment, and the codebook information comprises at least one of the following:

an identification of the selected frequency domain subband set;

the linear combination coefficient LCC corresponding to the selected frequency domain sub-band set;

selecting a vector by a port;

a frequency domain vector.
The network device of claim 123, wherein the frequency domain vector comprises a first frequency domain vector and/or a second frequency domain vector.
The network device of claim 124, wherein the length of the first frequency-domain vector and the number of selectable values is K, the K being the number of the selected set of frequency-domain subbands.
The network device of claim 125, wherein the selectable values of the first frequency domain vector comprise:

vectors formed by each row or each column of elements of the K-order identity matrix; or,

a vector of each row or column of elements of the K-order hadamard matrix.
The network device of claim 124, wherein the first frequency domain vector is a discrete fourier transform, DFT, vector.
The network device of any one of claims 124-127, wherein the first frequency domain vector is represented with first indication information;

the length of the first indication information is determined by at least one of the following:

the K;

the number of the first frequency domain vectors contained in the codebook information;

a number of non-zero coefficients;

number of layers.
The network device of claim 128, wherein the first indication information is of length

Or K; wherein,

the M is the number of first frequency domain vectors contained in the codebook information;

the K is _nz Is the number of the non-zero coefficients.
The network device of claim 128, wherein the first indication information is of length

Or (b)
Wherein,

the M is the number of first frequency domain vectors of each layer contained in the codebook information;

And v is the number of layers.
The network device of any one of claims 124-127, wherein the first frequency domain vector is represented with 1 first indication information for each layer;

the length of the first indication information corresponding to each layer is
Wherein,

the M is _l The number of first frequency domain vectors of the first layer included in the codebook information.
The network device of any one of claims 124-127, wherein the first frequency-domain vector is represented by at least two first indication information, each of the first indication information corresponding to a first frequency-domain vector of a partial layer contained in the codebook information.
The network device of any one of claims 124-127, wherein the first frequency domain vector is represented with second and third indication information;

the length of the second indication information is
Wherein the M ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the length of the third indication information is
Wherein v is the number of layers, and M is the number of first frequency domain vectors of each layer included in the codebook information.
The network device of any one of claims 124-127, wherein the first frequency domain vector is represented with fourth and fifth indication information;

The length of the fourth indication information is
The fourth indication information is used for indicating the starting position of the first frequency domain vector of each layer contained in the codebook information;

the length of the fifth indication information is
Wherein v is the number of layers; the K is _W And for the window length of the first frequency domain vector of each layer from the starting position, M is the number of the first frequency domain vectors of each layer contained in the codebook information.
The network device of claim 124, wherein the second frequency-domain vector has a length and a number of possible values of N, where N is a number of frequency-domain units included in each of the frequency-domain subband sets.
The network device of claim 135, wherein the second frequency domain vector is a vector of length N and a fixed value for each element.
The network device of claim 135, wherein the second frequency domain vector is a discrete fourier transform, DFT, vector.
The network device of claim 135 or 137, wherein the second frequency domain vector is represented with sixth indication information; the length of the sixth indication information is determined by at least one of: the N; the number of second frequency domain vectors contained in the codebook information; the number of layers; layer sequence number.
The network device of claim 138, wherein the sixth indication information is of length
Wherein,

and M is the number of second frequency domain vectors contained in the codebook information.
The network device of claim 138, wherein the sixth indication information is of length
Wherein,

the M is the number of second frequency domain vectors of each layer contained in the codebook information;

and v is the number of layers.
The network device of claim 135 or 137, wherein the second frequency domain vector is represented with seventh and eighth indication information;

the seventh indication information has a length of
Wherein the M ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the length of the eighth indication information is
Wherein v is the number of layers, and M is the number of second frequency domain vectors of each layer included in the codebook information.
The network device of any one of claims 123 to 141, wherein the port selection vector is represented using a ninth indication information;

the length of the ninth indication information is determined by at least one of: n (N) ₁ ；N ₂ The method comprises the steps of carrying out a first treatment on the surface of the The number of port selection vectors contained in the codebook information; the number of layers; wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ Is the number of antenna ports in the vertical direction.
The network device of claim 142, wherein the ninth indication information is of length
Or (b)
Wherein 2L is the number of port selection vectors contained in the codebook information.
The network device of claim 142, wherein the ninth indication information is of length

Or (b)
Wherein, the 2L is the number of port selection vectors of each layer contained in the codebook information; and v is the number of layers.
The network device of any one of claims 123 to 141, wherein the port selection vector is represented with 1 ninth indication information for each layer;

the length of the ninth indication information corresponding to each layer is
Or (b)
Wherein the 2L _l Selecting the number of vectors for the ports of the first layer contained in the codebook information; the N is ₁ The number of antenna ports in the horizontal direction; the N is ₂ Is the number of antenna ports in the vertical direction.
The network device of any one of claims 123-141, wherein the port selection vector is represented using at least two ninth indications, each of the ninth indications corresponding to a partial layer port selection vector contained in the codebook information.
The network device of any one of claims 123 to 141, wherein the port selection vector is represented using tenth indication information and eleventh indication information;

the tenth indication information has a length of
Or (b)
Wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ For the number of antenna ports in the vertical direction, L ₀ Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the eleventh indication information has a length of
Wherein v is the number of layers, and 2L is the number of port selection vectors of each layer included in the codebook information.
The network device of any one of claims 123 to 141, wherein the port selection vector is represented using twelfth indication information and thirteenth indication information;

the twelfth indication information has a length of
Or (b)
The twelfth indication information is used for indicating the starting position of the port selection vector of each layer contained in the codebook information; wherein the N is ₁ For the number of antenna ports in the horizontal direction, N is as follows ₂ The number of antenna ports in the vertical direction;

the thirteenth indication information has a length of
Or (b)
Wherein v is the number of layers, L _W Window length of the port selection vector of each layer from the starting position is selected for each layer, and 2L is the number of the port selection vectors of each layer contained in the codebook information.
The network device of any one of claims 124-148, wherein the codebook information further comprises non-zero coefficient position information.
The network device of claim 149, wherein the non-zero coefficient position information is represented with fourteenth indication information;

the fourteenth indication information has a length of
2LM、
Or (b)
Wherein L is the number of beams; the K is ₀ The number of the maximum non-zero coefficients; the M is the number of first frequency domain vectors contained in the codebook information; the N is ₁ The number of antenna ports in the horizontal direction; the N is ₂ The number of antenna ports in the vertical direction; the K is _nz Is a number of non-zero coefficients.
The network device of claim 149, each layer of the non-zero coefficient position information being represented with 1 fourteenth indication information;

the length of the fourteenth indication information corresponding to each layer is
Wherein,

the M is the number of first frequency domain vectors of each layer contained in the codebook information;

the K is _nz The number of non-zero coefficients for each layer included in the codebook information.
The network device of claim 149, wherein the non-zero coefficient position information is represented using at least two fourteenth indication information, each of the fourteenth indication information corresponding to a non-zero coefficient position of a partial layer included in the non-zero coefficient position information.
The network device of claim 149, wherein the non-zero coefficient position information is represented with fifteenth indication information and sixteenth indication information;

the fifteenth indication information has a length of
Or (b)
Wherein L is the number of beams, M is the number of first frequency domain vectors of each layer contained in the codebook information, K is the number of second frequency domain vectors of each layer contained in the codebook information _nz,0 Is a parameter determined by a higher layer or a parameter determined by the terminal device;

the sixteenth indication information has a length of
Wherein v is the number of layers and K is _nz,i The number of non-zero coefficients of the i-th layer included in the codebook information.
The network device of any one of claims 124-153, the receiving module further configured to receive a sum of non-zero coefficients from the terminal device.
The network device of claim 154, wherein the sum of non-zero coefficients employs a length of
Or (b)
Is indicated by the indication information of (a); wherein the K is ₀ Is the number of maximum non-zero coefficients.
The network device of any one of claims 124-155, the receiving module further configured to receive a non-zero coefficient priority from the terminal device.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory for performing the method of any of claims 1 to 44.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 45 to 78.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 44.
A chip, comprising: a processor for calling and running a computer program from memory, causing a device on which the chip is mounted to perform the method of any one of claims 45 to 78.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 44.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 45 to 78.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 44.
A computer program product comprising computer program instructions which cause a computer to perform the method of any one of claims 45 to 78.
A computer program which causes a computer to perform the method of any one of claims 1 to 44.
A computer program which causes a computer to perform the method of any one of claims 45 to 78.