CN111587543A - Channel state information matrix information processing method and communication device - Google Patents

Abstract

The application provides a channel state information matrix information processing method and a communication device, wherein the method comprises the following steps: the first communication device firstly determines channel state information matrix indicating information, and then transmits the channel state information matrix indicating information, wherein the channel state information matrix indicated by the channel state information matrix indicating information satisfies formulas (1) - (2) or formulas (3) - (4). The feedback quantity of the indication information of the channel state information matrix is small, so that the feedback quantity carried by the indication information of the channel state information matrix is obviously reduced compared with the feedback quantity of the indication information for acquiring the channel state information with the same precision in the prior art, and the occupation of effective resources can be greatly reduced; or under the condition of feeding back the indication information of the same amount of channel state information, the accuracy of the access network equipment for acquiring the channel state information can be greatly improved, so that the performance of the whole system is improved. The method provided by the embodiment can be applied to communication systems, such as V2X, LTE-V, V2V, internet of vehicles, MTC, IoT, LTE-M, M2M, internet of things, and the like.

Description

Channel state information matrix information processing method and communication device Technical Field

The present application relates to communications technologies, and in particular, to a method and a communications apparatus for processing channel state information matrix information.

Background

In a large-scale multiple-Input multiple-Output (Massive MIMO) technology, a large-scale array antenna is adopted at a base station end, and a large number of antennas are configured to obtain higher antenna freedom and support more users, so that the purpose of improving the cell throughput is achieved, and the cell performance is greatly improved. In a Frequency Division multiplexing (FDD) system using Massive MIMO, uplink and downlink channels do not have uplink and downlink reciprocity, and therefore downlink channel information needs to be fed back to an access network device through a terminal. Specifically, the terminal feeds back Channel State Information (CSI) to the access network device, and the access network device eliminates interference between users according to the CSI. Therefore, in an FDD system using Massive MIMO, how to report CSI with high accuracy is a key to improve the performance of a cell.

However, the feedback of the high-precision CSI by the terminal may result in excessive resource occupied by the CSI, which may further increase system overhead and reduce the utilization rate of system resources.

Disclosure of Invention

The application provides a channel state information matrix information processing method and a communication device, which are used for solving the problem that in the prior art, CSI occupies too many resources.

A first aspect of the present application provides a method for processing channel state information matrix information, where the method includes:

the first communication device first determines the channel state information matrix indication information and then transmits the channel state information matrix indication information.

Wherein the channel state information matrix indication information is used for indicating N₃A channel state information matrix, N₃Each channel state information matrix in the channel state information matrixes is 2N₁N₂A matrix of rows and columns, N₃The kth channel state information matrix in the channel state information matrixes is W_k，N₃Is an integer greater than 0; k is an integer of 1 to N₃And is and

l＝1，

is the kth column of the matrix W, W ═ W¹,α_kIs a real number; or,

when l is equal to 2, the reaction solution is,

column 1 of (a) is the kth column of the matrix W,

column 2 of (A) is the Nth of the matrix W₃+ k columns, where W satisfies: w ═ W¹ W²]，β_k,2,β_k,1Is a real number;

W^l1,2, satisfying the following formula (1) or (3):

wherein,

satisfy the requirement of

Or,

wherein,

satisfy the requirement of

Wherein, in formula (1) and formula (3), P is an integer greater than 0, L is an integer greater than 0,

is of length N₁The line vectors of (a) are,

is of length N₂The line vectors of (a) are,

is of length N₃The line vectors of (a) are,

and

in the case of a real number,

and

is a plurality of modulo 1; in the formula (3), the first and second groups,

is a length 2 row vector.

In the method, the first communication device determines the channel state information matrix indicating information, and the channel state information matrix indicated by the channel state information matrix indicating information satisfies equations (1) - (2) or equations (3) - (4). The feedback quantity of the indication information of the channel state information matrix is small, so that the feedback quantity carried by the indication information of the channel state information matrix is obviously reduced compared with the feedback quantity of the indication information for acquiring the channel state information with the same precision in the prior art, and the occupation of effective resources can be greatly reduced; or under the condition of feeding back the indication information of the same amount of channel state information, the accuracy of the access network equipment for acquiring the channel state information can be greatly improved, so that the performance of the whole system is improved.

In one possible design, the N₃Channel state information matrix and N₃One-to-one correspondence of frequency domain resource units, N₃The kth channel state information matrix W in the channel state information matrices_kAnd said N₃The kth frequency domain resource unit of the frequency domain resource units corresponds to, k is an integer, k ∈ {1,2₃}；

Said N is₃A frequency domain resourceKth of cell₂The lowest frequency in the frequency occupied by each frequency domain resource unit is more than or equal to N₃Kth frequency domain resource unit₁The highest frequency of the frequencies occupied by the frequency domain resource units, wherein k₂Greater than k₁。

In one possible design of the system, the system may be,

the following expression is satisfied:

wherein N is₁、N₂、O₁、O₂、O₃、O₄Are all integers greater than 0.

Is 0 or more and O or less₁N₁-an integer of 1, and (ii) a,

is 0 or more and O or less₂N₂-an integer of 1, and (ii) a,

is 0 or more and O or less₃N₃-an integer of 1, and (ii) a,

is 0 or more and 2O or less₄-an integer of 1.

In the method, based on the consideration that the channel information has sparse characteristics in some transform domains, the feedback quantity of the CSI reported by the terminal to the access network equipment can be greatly compressed, so that in the application, the codebook structure is based on the transform domain, and the terminal only reports the code words corresponding to the components with larger information quantity in the transform domain, so that the feedback quantity can be greatly compressed under the condition of ensuring the precision of the reported CSI.

In one possible design of the system, the system may be,

the following expression is satisfied:

wherein,

according to the method, the constructed code words are subjected to oversampling, the resolution ratio of the code words can be greatly increased after oversampling processing, the redundancy of a codebook is improved, and the mapping of a channel on the codebook can be sparse, so that a terminal can select fewer code words to report CSI to access network equipment, and meanwhile, the access network equipment can obtain higher accuracy of the CSI.

In one possible design, the channel state information matrix indication information includes an indication

And

information, indication

And

and indicate

And

the information of (1).

In one possible design, P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄At least one of which is composed ofLayer signaling or radio resource control, RRC, signaling indication, or P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄Is a predefined value.

In the method, P, L, N involved in feeding back the channel state information is indicated by physical signaling, RRC signaling or predefined mode₁、N₂、N₃、O₁、O₂、O₃、O₄The complexity and the feedback quantity can be flexibly controlled and realized by part or all of the parameters in the method, and the requirements of various scenes on the accuracy of the feedback quantity and the channel state information are met.

In one possible design, the channel state information matrix is a channel information matrix or a precoding matrix.

In the method, the channel state information matrix can be a precoding matrix or channel information, and the processing can enable the terminal to have more flexibility in algorithm design and implementation.

A second aspect of the present application provides a method for processing channel state information matrix information, the method including:

and the second communication device receives the channel state information matrix indication information and determines the channel state information matrix according to the channel state information matrix indication information.

Wherein the channel state information matrix indication information is used for indicating N₃A channel state information matrix, N₃Each channel state information matrix in the channel state information matrixes is 2N₁N₂A matrix of rows and columns, N₃The kth channel state information matrix in the channel state information matrixes is W_k，N₃Is an integer greater than 0, k is an integer, and k is greater than or equal to 1 and less than or equal to N₃And is and

l＝1，

is the kth column of the matrix W, W ═ W¹,α_kIs a real number;

l＝2，

column 1 of (a) is the kth column of the matrix W,

column 2 of (A) is the Nth of the matrix W₃+ k columns, where W satisfies: w ═ W¹ W²]，β_k,1、β_k,2Is a real number;

W^l1,2, satisfying the following formula (1) or (3):

wherein,

satisfy the requirement of

Or,

wherein,

satisfy the requirement of

Wherein, in formula (1) and formula (3), P is an integer greater than 0, L is an integer greater than 0,

is of length N₁The line vectors of (a) are,

is of length N₂The line vectors of (a) are,

is of length N₃The line vectors of (a) are,

and

in the case of a real number,

and

is a plurality of modulo 1; in the formula (3), the first and second groups,

is a length 2 row vector.

In one possible design, the N₃Channel state information matrix and N₃One-to-one correspondence of frequency domain resource units, N₃The kth channel state information matrix W in the channel state information matrices_kAnd said N₃The kth frequency domain resource unit of the frequency domain resource units corresponds to, k is an integer, k ∈ {1,2₃}；

Said N is₃Kth frequency domain resource unit₂The lowest frequency in the frequency occupied by each frequency domain resource unit is more than or equal to N₃Kth frequency domain resource unit₁The highest frequency of the frequencies occupied by the frequency domain resource units, wherein k₂Greater than k₁。

In one possible design of the system, the system may be,

the following expression is satisfied:

wherein N is₁、N₂、O₁、O₂、O₃、O₄Are all integers greater than 0 and are each,

is 0 or more and O or less₁N₁-an integer of 1, and (ii) a,

is 0 or more and O or less₂N₂-an integer of 1, and (ii) a,

is 0 or more and O or less₃N₃-an integer of 1, and (ii) a,

is 0 or more and 2O or less₄-an integer of 1.

In one possible design of the system, the system may be,

the following expression is satisfied:

wherein,

in one possible design, the channel state information matrix indication information includes an indication

And

information, indication

And

and, indicate

And

the information of (1).

In one possible design, the method for determining the csi matrix by the second communications device according to the csi matrix indicator includes:

the second communication device obtains the indication information according to the channel state information matrix

And

the second communication device is based on

O₁、O₂、O₃And the following formula, calculated to obtain

The second communication device is based on

N₁、N₂、N₃、O₁、O₂、O₃And the following formula, calculated to obtain

And

the second communication device is based on

P, L, formula (1) and formula (2), calculating to obtain a channel state information matrix;

said second communication device being in accordance with α_kOr β_k,1、β_k,2And normalizing the channel state information matrix.

In one possible design, the method for determining the csi matrix by the second communications device according to the csi matrix indicator includes:

the second communication device obtains the indication information according to the channel state information matrix

And

the second communication device is based on

O₁、 O₂、O₃、O₄And the following formula, calculated to obtain

The second communication device is based on

N₁、N₂、N₃、O₁、O₂、O₃、O₄And the following formula, calculated to obtain

And

the second communication device is based on

P, L, formula (3) and formula (4), calculating to obtain a channel state information matrix;

said second communication device being in accordance with α_kOr β_k,1、β_k,2And normalizing the channel state information matrix.

In one possible design, P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄Is indicated by physical layer signaling or radio resource control, RRC, signaling, or, P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄Is a predefined value.

In one possible design, the channel state information matrix is a channel information matrix or a precoding matrix.

A third aspect of the present application provides a communication apparatus that implements the function of the first communication apparatus in the first aspect. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions.

In one possible design, the communication device may include a processing module and a sending module, which may perform the respective functions in the first aspect, such as: the processing module is used for determining the indication information of the channel state information matrix; and the sending module is used for sending the channel state information matrix indication information.

A fourth aspect of the present application provides a communication apparatus that realizes the function of the second communication apparatus in the second aspect. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions.

In one possible design, the communication device may include a receiving module and a processing module, which may perform the respective functions in the second aspect, such as: the receiving module is used for receiving the channel state information matrix indication information; and the processing module is used for determining the channel state information matrix according to the channel state information matrix indication information.

A fifth aspect of the present application provides a communication apparatus, comprising: a memory and a processor. The memory is configured to store program instructions, and the processor is configured to call the program instructions in the memory to implement the functions of the first communication device in the first aspect.

A sixth aspect of the present application provides a communication apparatus comprising: a memory and a processor. The memory is used for storing program instructions, and the processor is used for calling the program instructions in the memory to realize the functions of the second communication device in the second aspect.

A seventh aspect of the present application provides a chip for a first communication device, the chip comprising: at least one communication interface, at least one processor, and at least one memory, wherein the communication interface, the processor, and the memory are interconnected by a circuit (or a bus in some cases), and the processor invokes instructions stored in the memory to perform the method steps of the first aspect.

An eighth aspect of the present application provides a chip for a second communication device, the chip comprising: at least one communication interface, at least one processor, and at least one memory, wherein the communication interface, the processor, and the memory are interconnected by a circuit (or a bus in some cases), and the processor invokes instructions stored in the memory to perform the method steps of the second aspect.

A ninth aspect of the present application provides a computer readable storage medium having stored thereon a computer program comprising program instructions which, when executed by a module, cause the module to perform the method of the first aspect described above.

A tenth aspect of the present application provides a computer-readable storage medium storing a computer program comprising program instructions which, when executed by a module, cause the module to perform the method of the second aspect described above.

An eleventh aspect of the present application provides a non-volatile storage medium having one or more program codes stored therein, which when executed by a terminal, performs the associated method steps performed by the first communication device of the first aspect.

A twelfth aspect of the present application provides a non-volatile storage medium having one or more program codes stored therein, where the program codes are executed by an access network device, and the access network device executes the relevant method steps executed by the second communication device in the second aspect.

A thirteenth aspect of the present application provides a computer program product comprising one or more computer instructions which, when loaded and executed on a computer, performs the method steps of the first aspect described above.

A fourteenth aspect of the present application provides a computer program product comprising one or more computer instructions which, when loaded and executed on a computer, performs the method steps of the second aspect described above.

Drawings

FIG. 1 is a system architecture diagram suitable for use with the present application;

fig. 2 is a schematic structural diagram of a dual-polarized array antenna provided in the present application;

fig. 3 is an interaction flowchart of an embodiment of a channel state information matrix information processing method provided in the present application;

fig. 4 is a schematic flowchart of an embodiment of a channel state information matrix information processing method provided in the present application;

fig. 5 is a schematic flowchart of an embodiment of a channel state information matrix information processing method provided in the present application;

fig. 6 is a block diagram of a communication device provided in the present application;

fig. 7 is a block diagram of a communication device provided in the present application;

fig. 8 is a block diagram of a communication device provided herein;

fig. 9 is a block diagram of a communication device provided herein;

FIG. 10 is a block diagram of a chip provided herein;

fig. 11 is a block diagram of another chip provided in the present application.

Detailed Description

The channel state information matrix information processing method and device provided by the application can be applied to the system architecture shown in fig. 1. As shown in fig. 1, the system includes: the access network equipment sends data to the terminal through the antenna. With the introduction of MassiveMIMO technology, the structure of the antenna is developed into a dual-polarized array antenna. Fig. 2 is a schematic structural diagram of a dual-polarized array antenna provided in the present application, where each cross line in fig. 2 represents an antenna array, and each oblique line in the cross line represents a polarization direction.

For better understanding of the technical solutions of the present application, the following explains the network elements referred to in fig. 1 and other terms referred to in the present application:

1) the first communication device: the first communication device may be a terminal or a processing chip in a terminal, the terminal may be a wireless terminal or a wired terminal, the wireless terminal may be a device providing voice and/or other service data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. Wireless terminals, which may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (RAN), which may exchange language and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein.

2) And a second processing device: the second processing means may be an access network device, which may be a base station, or an access point, or may refer to a device in an access network that communicates over the air interface with wireless terminals over one or more sectors, or a processing chip in an access network device. The base station may be configured to interconvert received air frames and IP packets as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network. The base station may also coordinate management of attributes for the air interface. For example, the Base Station may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in Long Term Evolution (Long Term Evolution, LTE), a relay Station or an Access point, or a Base Station (gNB) in a 5G network, and the like, but is not limited thereto.

3) The term "plurality" means two or more, and the other terms are similar. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

First, the parameters, symbol flags, and concepts related to the present application are explained below, and the parameters, symbol flags, and concepts have the same meaning on the first communication apparatus and the second communication apparatus side.

(1) P: representing the number of selected time domain multipaths after IDFT

(2) L: representing the number of vectors used for linear combining in one multipath

(3) N1, N2: respectively representing the horizontal and vertical antenna dimensions. When N is present₁Representing the size of the horizontal antenna dimension, N₂Represents the vertical antenna dimension size; when N is present₂Representing the size of the horizontal antenna dimension, N₁Indicating the vertical antenna dimension.

(4) N3: representing transform domain dimension size of codebook

(5)O₁、O₂、O₃、O₄: representing oversampled parameters

(6)

Expressed as kronecker product

(7)(A)^TRepresenting transposing a matrix or vector A

(8)(A)^*Representing conjugation of a matrix or vector A

(9)(A)^HRepresenting conjugate transposing of a matrix or vector A

(10) A (1, 1) represents that the elements indicated by a matrix A with a first dimension of 1, all values of a second dimension and a third dimension of 1 are taken as the following elements: "means taking all values in that dimension.

(11) [ a: b ]: represents [ a: b ] ═ a, a +1, a +2, …, b ], wherein a and b are integers and b > a.

(12) L a |: representing the modulo of a complex number a.

(13) angle (a): indicating the phase of the complex number a is calculated.

(14) Layer (b): the layer in the present application corresponds to the concept of rank, with rank 1 corresponding to data transmission of layer 1 and rank 2 corresponding to data transmission of layer 2.

Optionally, at least one of the parameters shown in (1) to (5) above is indicated by physical layer signaling or Radio Resource Control (RRC) signaling, or the parameters shown in (1) to (5) above may also be a predefined value. Wherein the predefined value refers to a value defined by a protocol or a value defined by the first communication device and/or the second communication device.

P, L, N involved in feeding back channel state information is indicated by physical signaling, RRC signaling or predefined means in the present application₁、N₂、N₃、O₁、O₂、O₃、O₄The complexity and the feedback quantity can be flexibly controlled and realized by part or all of the parameters in the method, and the requirements of various scenes on the accuracy of the feedback quantity and the channel state information are met.

Fig. 3 is an interaction flowchart of an embodiment of a channel state information matrix information processing method provided in the present application, and as shown in fig. 3, the method includes:

s301, the first communication device determines channel state information matrix indication information.

The first communication device may be the terminal.

Wherein, the channel state information matrix indication information is used for indicating N₃A channel state information matrix, N₃Each channel state information matrix in the channel state information matrixes is 2N₁N₂A matrix of rows and columns, N₃The kth channel state information matrix in the channel state information matrixes is W_kWherein k is an integer, and k is not less than 1 and not more than N₃And is and

l＝1，

is the kth column of the matrix W, W ═ W¹,α_kTo normalize the coefficients, α_kIs a real number; or,

when l is equal to 2, the reaction solution is,

column 1 of (a) is the kth column of the matrix W,

column 2 of (A) is the Nth of the matrix W₃+ k columns, where W satisfies: w ═ W¹ W²]，β_k,2,β_k,1To normalize the coefficients, β_k,2,β_k,1Are real numbers.

W^l1,2, satisfying the following formula (1) or (3):

wherein,

satisfy the requirement of

Or,

wherein,

satisfy the requirement of

Wherein, in the formula (1) and the formula (3),

is of length N₁The line vectors of (a) are,

is of length N₂The line vectors of (a) are,

is of length N₃Is a vector of the transform domain matrix,

and

in the case of a real number,

and

is a complex number with a modulus of 1. In the formula (3), the first and second groups,

is a length 2 row vector.

In addition, the above l represents the number of layers of the antenna.

Specifically, the above equations (1) and (2) correspond to a scenario in which the weighting coefficients are calculated individually for each polarization direction of the antenna, and the above equations (3) and (4) correspond to a scenario in which the weighting coefficients are calculated jointly for two polarization directions of the antenna.

In one example, the first communication device may calculate the channel state information matrix indicator based on a specific formula or determine the channel state information matrix indicator by traversing the channel state information matrix.

A specific method for calculating the channel state information matrix indication information based on a specific formula will be described in detail in the following embodiments.

The method for determining the indication information of the channel state information matrix by traversing the channel state information matrix comprises the following steps:

and traversing all code words in the codebook, wherein the code words are generated according to the formula (2) or the formula (4). And then, calculating the correlation between the channel information and the original frequency domain channel information, and selecting the optimal oversampling parameter according to the criterion of the maximum correlation. After the optimal oversampling parameters are determined, the P transform domain indexes selected by the transform domain are determined. And then, traversing all the selected transform domain indexes, and calculating to obtain L vector indication indexes and vector weighting coefficients for each selected transform domain index, thereby obtaining all the channel state information matrix indication information.

Correspondingly, at the receiving end, that is, at the access network device side, a channel state information matrix is obtained by using a weighted combination method, where the weighted combination satisfies the above formula (1) or the above formula (3).

S302, the first communication device transmits the channel state information matrix indication information.

And S303, the second communication device determines the channel state information matrix according to the channel state information matrix indication information.

The CSI matrix indicator forms downlink CSI, and the first communication device sends the downlink CSI to the second communication device, where the second communication device may specifically be the access network device.

After receiving the channel state information matrix indication information, the second communication device may determine the channel state information matrix according to the channel state information matrix indication information, or, when the channel state information matrix is a precoding matrix, in some specific scenarios, the second communication device may also directly determine the channel state information matrix according to actual needs without according to the channel state information matrix indication information.

For example, in some specific scenarios, for a channel state information matrix with a column number of 2 (i.e., l is 2), the access network device determines that only 1 column of the channel state information matrix is needed, and then the access network device selects 1 column of the channel state information matrix as the channel state information matrix.

A specific method for determining the channel state information matrix according to the channel state information matrix indication information by the second communication device will be described in detail in the following embodiments.

Optionally, the channel state information matrix may be a channel information matrix or a precoding matrix. The following embodiments of the present application take a channel information matrix as an example to describe a specific implementation process of the present application, and a process related to a precoding matrix is also described in the following embodiments.

In the application, the channel state information matrix may be a precoding matrix or channel information, and such processing enables the terminal to have more flexibility in algorithm design and implementation.

In this embodiment, the first communication device determines channel state information matrix indicating information that indicates a channel state information matrix satisfying equations (1) to (2) or satisfying equations (3) to (4). The feedback quantity of the indication information of the channel state information matrix is small, so that the feedback quantity carried by the indication information of the channel state information matrix is obviously reduced compared with the feedback quantity of the indication information for acquiring the channel state information with the same precision in the prior art, and the occupation of effective resources can be greatly reduced; or under the condition of feeding back the indication information of the same amount of channel state information, the accuracy of the access network equipment for acquiring the channel state information can be greatly improved, so that the performance of the whole system is improved.

A specific procedure for the first communication device to determine the above-mentioned channel state information matrix indication information is first described below.

For ease of understanding, the following embodiments refer to a system bandwidth of 10 Resource Blocks (RBs), where a Resource Block refers to a time-frequency unit occupying a certain time width and frequency width in the time-frequency domain. The number of antennas of the first communication device is 2, the antennas are arranged in 1 row and 2 columns, the number of antennas of the second communication device is 4, and accordingly, N is given as an example₁＝2，N₂＝1，N₃10. In addition, in the following examples of the present application, P is 2, L is 1, and O is assumed₁＝4，O₂＝1，O₃＝2。

The specific procedure for the first communication device to determine the channel state information matrix indication information in step S301 is as follows.

Fig. 4 is a schematic flowchart of an embodiment of a channel state information matrix information processing method provided in the present application, and as shown in fig. 4, a process of determining channel state information matrix indication information by a first communication device is as follows:

s401, channel estimation is carried out to obtain a frequency domain channel information matrix H.

The frequency domain channel information matrix H is a three-dimensional matrix, the first dimension represents the number of antennas at the first communication device end, the size is 2, the second dimension represents the number of antennas at the second communication device end, the size is 4, and the third dimension represents the number of frequency domains RB, the size is 10.

Further, in order to enable the second communication device side to obtain the accurate frequency domain channel information matrix H, the following processing of step S402 and the subsequent steps may be performed to obtain the channel state information matrix indicating information capable of indicating N₃A channel state information matrix, N₃Each channel state information matrix can reflect a frequency domain channel information matrix H, and N is₃Each channel state information matrix satisfies the above formula (1) or (3).

S402, calculating orthogonal basis oversampling parameters according to the frequency domain channel information matrix H

And channel state information matrix indication index pmi₃，pmi₃Is used for indicating

Wherein,

and

the following relationship is satisfied,

wherein,

according to the method and the device, oversampling operation is carried out on the constructed code words, after oversampling processing, the resolution ratio of the code words can be greatly increased, the redundancy of the codebook is improved, mapping of a channel on the codebook can be sparse, the terminal can select fewer code words to report CSI to the access network equipment, and meanwhile the access network equipment can obtain higher accuracy of the CSI.

It should be noted that, if the channel state information matrix in this application is a precoding matrix, after the step S401 is executed, Singular Value Decomposition (SVD) may be performed on the frequency domain channel information matrix H to obtain a corresponding precoding matrix, and in this step, an orthogonal basis oversampling parameter is calculated according to the obtained precoding matrix

And channel state information matrix indication index pmi₃The subsequent specific processing manner is the same as the processing manner corresponding to the channel information matrix, and is not described in detail below.

As an alternative implementation, the first communication device calculates the orthogonal base oversampling parameter according to the frequency domain channel information matrix H

And channel state information matrix indication index pmi₃Then, transform domain transformation may be performed first to obtain a transform domain channel information matrix corresponding to the frequency domain channel information matrix H. Furthermore, when the transform domain transformation supports oversampling, orthogonal basis oversampling parameters are calculated according to the transform domain channel information matrix

And channel state information matrix indicationIndex pmi₃Wherein each pmi₃The selected transform domain dimension index may be represented. And when the transform domain transform does not support oversampling, then O₃Is 1, i.e. no oversampling, without feedback of quadrature-based oversampling parameters

Only the indication index pmi of the channel state information matrix needs to be calculated according to the channel information matrix of the transform domain₃。

For example, when the first communication apparatus performs Transform domain Transform, Inverse Discrete Fourier Transform (IDFT) Transform may be performed, or Discrete Fourier Transform (DFT) Transform, Discrete Cosine Transform (DCT) Transform, or the like may be performed.

Wherein, when in the codebook

When the corresponding transform domain is DFT transform, the corresponding DFT matrix^DFTSatisfy, DFT transform corresponding DFT matrix^DFTTo (1) a

Is listed as

When in the codebook

When the corresponding transform domain is DCT transform, the corresponding DCT matrix is

Is listed as

In this step, the IDFT transform is used to illustrate that the first communication device performs transform domain transform and calculates the orthogonal basis over-sampling parameter

And channel state information matrix indication index pmi₃The process of (1).

The specific process is as follows:

and step 1, performing IDFT transformation.

When the codebook is a DFT transform domain codebook, performing oversampling IDFT transform on each transmitting and receiving antenna link of a corresponding UE end-to-end frequency domain channel information matrix H, wherein the number of IDFT transform points is O₃*N₃. According to the foregoing parameter examples, O here₃＝2，N₃10. For the antenna i of the second communication device_txAntenna i with first communication device_rxCorresponding channel link H (i)_rx,i_tx1:10) carrying out O₃*N₃IDFT transform of 2x 10 x 20 points. Wherein, the IDFT matrix corresponding to the IDFT transform^IDFTTo (1)

Expressed by the above formula (6). When the transform domain is IDFT transform, the corresponding IDFT matrix is the second one

The rows satisfy the following formula (6):

wherein,

^IDFTsize of O₃N₃Line N₃And (4) columns.

Then there is^DFT＝(^IDFT)^H，

Is expressed as size N₃The unit matrix of (2).

After IDFT transformation, Hf (i) is obtained_rx,i_tx1:20) in which i_txIs an integer of 1 to i_tx≤4，i_rxIs an integer of 1 to i_rx≤2。

It should be noted that, based on the consideration that the channel information has a sparse characteristic in some transform domains, the feedback amount of the CSI reported by the terminal to the access network device can be greatly compressed, and therefore, in the present application, the codebook structure is based on the transform domain, and the terminal only reports the codeword corresponding to the component with a larger information amount in the transform domain, so that the feedback amount can be greatly compressed under the condition of ensuring the accuracy of the reported CSI.

Step 2, traversing all i_rxAnd i_tx，1≤i_rx≤N₂＝2，1≤i_tx≤N₁Hf, Hf1 and Hf2 were obtained as 4.

The first dimension of the Hf matrix is 2, the second dimension is 4, and the third dimension is 20.

The Hf1 and the Hf2 are Hf (: 2:20), that is, Hf1 is a matrix corresponding to the odd-numbered index in the third dimension of the Hf matrix and has the same size as H, and Hf2 is a matrix corresponding to the even-numbered index in the third dimension of the Hf matrix and has the same size as H.

And 3, respectively calculating the sum of all the transmit-receive antenna link powers corresponding to idxF of each time domain point subjected to IDFT transformation for Hf1 and Hf2, wherein idxF is more than or equal to 1 and less than or equal to 10.

Specifically, the antenna power sum corresponding to Hf1 and Hf2 was calculated using the following formula.

Wherein, pathPow1 and pathPow2 are both vectors of 1 row and 10 columns.

And 4, calculating pathPowP1 and pathPowP2 according to pathPow1 and pathPow 2.

Where pathPowP1 is the power sum of the largest P points in pathPow1, pathPow2 is the power sum of the largest P points in pathPow2, where P is 2 according to the parameter example described above.

Further, the indexes of the largest P time domain points (here, 2 time domain points) corresponding to the pathPowP1 and pathPowP2 are recorded, respectively

Step 5, determining orthogonal base oversampling parameters according to pathPowP1, pathPowP2 and the indexes of the time domain points

And channel state information matrix indication index pmi₃，pmi₃Is used for indicating

And (4) information.

Specifically, if pathPowP1 is greater than or equal to pathPowP2, then:

Q₃＝q₃＝0，

Hf0＝Hf1

if pathPowP1 < pathPowP2, then:

Q₃＝q₃＝1，

Hf0＝Hf2

through the above process, can obtain

And

0≤i₁≤P-1＝1，0≤i₂≤L-1＝0。

further, under the scenario of jointly calculating the weighting coefficients for two polarizations, dual-polarization phase oversampling parameters also need to be calculated

And dual polarization phase indication information pmi₄。

Wherein,

is as in the following formula (7)

pmi₄To indicate in the following formula (7)

Wherein,

illustratively, it can be calculated as follows

And pmi₄。

Firstly, according to the frequency domain indication information H, calculating

And calculate

Wherein,

is an integer, and

in this embodiment, O₄Is 2, therefore

Wherein

Indicating rounding down on a. q. q.s₄＝m₄-O₄n₄。

Can obtain

S403, calculating oversampling parameters

And channel state information matrix indication index pmi₁、pmi₂，pmi₁Is used for indicating

pmi₂Is used for indicating

Wherein,

the following relationship is satisfied.

Wherein,

specifically, this step is performed by traversing

Calculating q₁,q₂And pmi₁,pmi₂. This step S403 may be regarded as a process of performing vector decomposition on the channel information of one multipath in the time domain after IDFT to obtain vector indication information.

The specific process is as follows:

step 1, for any group

And determining the corresponding orthogonal basis matrix.

Specifically, order

Wherein the orthogonal basis matrix

To (1) a

The columns may be represented as:

wherein,

namely, it is

Namely, it is

In addition, for equation (10), if N is₂When 1 or more, then equation (10) can be expressed as:

further, with

Corresponding orthogonal basis matrix

The size is 2x 2.

In another case, in a scenario where the weighting coefficients are calculated jointly for two polarizations, the following equation (12) is used instead of the above equation (11).

Wherein,

m₄calculated from the above equation (7).

Step 2, determined for the above steps

Traversing pmi₃Is calculated to obtain each pmi₃The power sum of the maximum L vectors of power corresponding to the element is calculated according to the power sum to obtain the channel state information matrix indication index

And a weighting factor.

For arbitrarily selected

idxP ∈ {0,1}, having

The size is 1 row and 4 columns,

the size is 1 row and 4 columns.

In particular, first for the selected

And

the weighting coefficient is calculated using the following formula (13):

wherein, in the above formula

Subscript_p0Which represents the first polarization of the light beam,

subscript_p1Representing a second polarization. Upper label⁽¹⁾Indicating the first UE antenna, superscript⁽²⁾Representing a second UE antenna.

Respectively representing the weighting coefficients of the corresponding UE antenna and the corresponding polarization direction, and the weights are vectors of 1 row and 2 columns.

Next, the vector power sum is calculated using the following equation (14):

wherein the powcuf size is 1 × 2.

Further, the largest L values of powCof are selected and summed and recorded as

According to the above parameter example, L is 1, so the largest powCof value is selected, which corresponds to the index idxL, and 1 ≦ idxL ≦ 2, having

Saving the corresponding channel state information matrix indication index as

The corresponding weighting coefficients are respectively:

where | a | represents the modulus of the complex number a and angle (a) represents the phase of the complex number a.

Step 3, traversing idxP epsilon {0,1}, and respectively calculating by using the method in the step 2 to obtain the following information:

step 4, calculating the power sum of the maximum L vectors of all the multipath by using the following formula (16):

step 5, traversing all

And

and (5) repeating the step 1 to the step 4.

Step 6, selecting

Maximum value corresponds to

As the above oversampling parameter

Through the above process, can obtain

Step 7, according to the selected { q₁,q₂Determining the channel state information matrix indication index pmi₁,pmi₂：

Through the above process, can obtain

And determining the channel state information matrix weighting information according to the weighting coefficient.

Specifically, the weighting information Ω ═ ω¹,θ¹,ω²,θ²In which ω is¹For amplitude information of the UE antenna 1, theta¹For phase information, omega, of the UE antenna 1²For amplitude information of the UE antenna 2, theta²Is the phase information of the UE antenna 2.

Wherein, ω is¹Including that in the above formula (1)

ω²Including in the following formula (1)

θ¹Including that in the above formula (1)

θ²Including that in the above formula (1)

0≤i₁≤P-1＝1，0≤i₂≤L-1＝0。

Wherein,

and

is a real number，

And

is a complex number with a modulus of 1.

ω¹And theta¹The method specifically comprises the following steps:

i.e. obtainable from above

ω²And theta²The method specifically comprises the following steps:

by the above process, the noodle can be obtained

In another case, in a scenario where the weighting coefficients are calculated jointly for two polarizations, the weighting coefficients for the two polarizations are calculated jointly, and thus the above equation (13) is not used, but the following equation (18) is used.

Accordingly, the following formula (19) is used instead of the formula (13).

powCof＝|cof⁽¹⁾|²++|cof⁽²⁾|² (19)

Accordingly, the following formula (20) is used instead of the formula (15).

Thereby obtaining:

wherein, ω is¹Including that in the above formula (3)

ω²Is as in the following formula (3)

θ¹Is in the above formula (3)

θ²Is in the above formula (3)

If the rest of the step is kept unchanged, the following contents can be obtained finally in the step:

further, the first communication apparatus transmits the channel state information matrix indication information to the second communication apparatus according to the above step S302.

In an alternative embodiment, the channel state information matrix indication information sent by the first communication device to the second communication device includes the oversampling parameter determined by the above steps

Channel state information matrix indication index pmi₁,pmi₂,pmi₃And channel state information matrix weighting information omega ═ omega¹,θ¹,ω²,θ²}. Under the scene of jointly calculating the weighting coefficients by two polarizations, the method also comprises a dual-polarization phase oversampling parameter q₄And dual polarization phase indication information pmi₄。

Specifically, the csi matrix indicator includes { Q, pmi, Ω }, where Q ═ Q₁,q₂,q₃,q₄}，pmi＝{pmi₁,pmi₂,pmi₃Or Q ═ Q }₁,q₂,q₃}，pmi＝{pmi₁,pmi₂,pmi₃,pmi₄}。

That is, when the weighting coefficient is calculated individually for each polarization of the antenna, the indication information of the channel state information matrix includes an indication

Information, indication

And indicate

And

the information of (a), wherein,

and

which represents the magnitude of the weighting coefficient,

and

representing the weighting factor phase, with a value of 1 or 2.

When the weighting coefficient is calculated by each polarization of the antenna, the indication information of the channel state information matrix includes the indication

Information, indication

And indicate

And the information of (a) to (b), wherein,

which represents the magnitude of the weighting coefficient,

representing the weighting factor phase, with a value of 1 or 2.

And has:

in yet another alternative embodiment, the first communication device may send only some of the above information to the second communication device. Illustratively, if O₁1, thenThe first communication device need not transmit q to the second communication device₁If O is₂If 1, the first communication device does not need to transmit q to the second communication device₂If O is₃If 1, the first communication device does not need to transmit q to the second communication device₃In the scenario of jointly calculating the weighting coefficients for two polarizations, if O is₄If 1, the first communication device does not need to transmit q to the second communication device₄. In addition, if N₁If 1, the first communication device does not need to transmit n to the second communication device₁If N is present₂If 1, the first communication device does not need to transmit n to the second communication device₂If N is present₃If 1, the first communication device does not need to transmit n to the second communication device₃。

A specific method for determining the channel state information matrix according to the channel state information matrix indication information by the second communication device is described below.

Optionally, after receiving the channel state information matrix indication information, the second communications apparatus may calculate the channel state information matrix based on the formula in the foregoing embodiment, or the second communications apparatus may also obtain the channel state information matrix based on a Discrete Fourier Transform (DFT) and linear combination method.

The following first describes a process of calculating a channel state information matrix by the second communication device based on the formula in the above embodiment.

In the following embodiments, the case where all the parameters are included in the csi matrix indicator is taken as an example, and the second communication device may obtain the remaining parameter values according to the above correspondence relationship when only some of the parameters are included in the csi matrix indicator.

Fig. 5 is a schematic flowchart of an embodiment of a channel state information matrix information processing method provided in the present application, and as shown in fig. 5, a process of calculating a channel state information matrix by a second communication device is as follows:

s501, the second communication device indicates according to the channel state information matrixInformation, obtaining oversampling parameters

Channel state information matrix indication index pmi₁,pmi₂，pmi₃And channel state information matrix weighting information omega ═ omega¹,θ¹,ω²,θ²}。

Specifically, the second communication device may obtain the channel state information matrix indication information

And

under another condition, in a scenario of jointly calculating the weighting coefficients for two polarizations, the second communication device may further obtain a dual-polarization phase oversampling parameter q according to the channel state information matrix indication information₄And dual polarization phase indication information pmi₄。

And S502, the second communication device calculates to obtain first data according to the acquired parameters.

Wherein the first data is specifically

Then, in particular, the second communication device is based on

O₁、O₂、O₃And formula (5) and formula (8) calculated to obtain

Wherein,

the above formula (5) and formula (8) are satisfied, respectively.

Alternatively, in the scenario where the weighting coefficients are jointly calculated for two polarizations, the second communication device may also simultaneously calculate the weighting coefficients according to q₄And pmi₄Is calculated to obtain

Wherein,

and S503, the second communication device calculates second data according to the first data.

Wherein the second data is specifically

And

then, in particular, the second communication device is based on

N₁、N₂、N₃、O₁、O₂、O₃And equations (9) and (10), and, either equation (6-0) or equation (6-1), are calculated

And

wherein,

satisfies the above-mentioned formula (9),

satisfies the above-mentioned formula (10),

satisfies the above formula (6-0) or formula (6-1), in which formula N₁、N₂、O₁、O₂、O₃、O₄Are all integers greater than 0 and are each,

is 0 or more and O or less₁N₁-an integer of 1, and (ii) a,

is 0 or more and O or less₂N₂-an integer of 1, and (ii) a,

is greater than or equal to0 to O₃N₃-an integer of 1, and (ii) a,

is 0 or more and 2O or less₄-an integer of 1.

Alternatively, in the scenario where the weighting coefficients are jointly calculated for two polarizations, the second communication device may also simultaneously calculate the weighting coefficients based on

Is calculated to obtain

And S504, the second communication device calculates the channel state information matrix according to the second data.

In particular, the second communication device is based on

P, L, formula (1) and formula (2), and calculating to obtain the channel state information matrix.

Specifically, the above formula (1) is

I.e. the channel state information matrix satisfies this equation (1).

The above formula (2) is

I.e. calculated from the above equations (9) and (10)

And calculated from the formula (6-0) or the formula (6-1)

The product of the kronecker product is obtained by calculation

Alternatively, in the scenario where the weighting coefficients are jointly calculated for two polarizations, the second communication device may also simultaneously calculate the weighting coefficients based on

And calculated according to equations (3) and (4).

Specifically, the above formula (3) is

I.e. the channel state information matrix satisfies this equation (3).

The above formula (4) is

I.e. calculated from the above equations (9) and (10)

And calculated from the formula (6-0) or the formula (6-1)

And according to

The kronecker product multiplication is carried out to obtain the product in the formula (4)

Wherein, the above

Represents a vector in a corresponding matrix of transform domain transform, which may be DFT transform, DCT transform, or the like. The above equation (6-0) corresponds to the DFT transform, and the above equation (6-1) corresponds to the DCT transform.

That is, the DFT matrix when the transform domain is DFT transform^DFTSatisfy, DFT transform corresponding DFT matrix^DFTTo (1) a

Is listed as

DCT matrix number when the transform domain is DCT transform

Is listed as

And S505, the second communication device normalizes the channel state information matrix according to the normalization coefficient.

Specifically, α_kNormalized coefficient for layer number 1, β_k,1、β_k,2Is a normalized coefficient at the number of layers of 2.

For the k-th channel state information matrix W of the N3 channel state information matrices_kWhen the number of layers is lWhen the number is equal to 1, the alloy is put into a container,

is the kth column of the matrix W, W ═ W¹. When the number of layers l is 2,

column 1 of (a) is the kth column of the matrix W,

column 2 of (A) is the Nth of the matrix W₃+ k columns.

In another embodiment, N is as described in the previous embodiments₃Channel state information matrix and N₃The frequency domain resource units are in one-to-one correspondence. Specifically, the N is₃The kth channel state information matrix W in the channel state information matrices_kAnd the N₃The kth frequency domain resource unit of the frequency domain resource units corresponds to, wherein k is an integer, and k ∈ {1,2₃}。

Optionally, the N₃Kth frequency domain resource unit₂The lowest frequency in the frequency occupied by the frequency domain resource units is more than or equal to the N₃Kth frequency domain resource unit₁The highest frequency of the frequencies occupied by the frequency domain resource units, wherein k₁And k₂Are two specific values of k, and k₂Greater than k₁。

It should be noted that, if the channel state information matrix is a precoding matrix, the second communication device may obtain the precoding matrix according to the channel information matrix after obtaining the channel information matrix according to the processing of the foregoing steps.

Fig. 6 is a block diagram of a communication device according to the present application, where the communication device is the first communication device, and as shown in fig. 6, the communication device includes:

the processing module 601 is configured to determine channel state information matrix indication information.

Wherein, the channel state information matrix indication information is used for indicating N₃A channel state information matrix, N₃Each channel state information matrix in the channel state information matrixes is 2N₁N₂A matrix of rows and columns, N₃The kth channel state information matrix in the channel state information matrixes is W_k，N₃Is an integer greater than 0; k is an integer of 1 to N₃And is and

l＝1，

is the kth column of the matrix W, W ═ W¹,α_kIs a real number; or,

when l is equal to 2, the reaction solution is,

column 1 of (a) is the kth column of the matrix W,

column 2 of (A) is the Nth of the matrix W₃+ k columns, where W satisfies: w ═ W¹ W²]，β_k,2,β_k,1Is a real number;

W^l1,2, satisfying the following formula (1) or (3)：

Wherein,

satisfy the requirement of

Or,

wherein,

satisfy the requirement of

Wherein, in formula (1) and formula (3), P is an integer greater than 0, L is an integer greater than 0,

is of length N₁The line vectors of (a) are,

is of length N₂The line vectors of (a) are,

is of length N₃The line vectors of (a) are,

and

in the case of a real number,

and

is a plurality of modulo 1; in the formula (3), the first and second groups,

is a length 2 row vector;

a sending module 602, configured to send the channel state information matrix indication information.

In an alternative embodiment, N is as described above₃Channel state information matrix and N₃Each frequency domain resource unit is in one-to-one correspondence, N₃The kth channel state information matrix W in the channel state information matrices_kAnd the above-mentioned N₃The kth frequency domain resource unit of the frequency domain resource units corresponds to, k is an integer, k ∈ {1,2₃}。

N is above₃Kth frequency domain resource unit₂The lowest frequency in the frequency occupied by the frequency domain resource units is more than or equal to the N₃Kth frequency domain resource unit₁The highest frequency of the frequencies occupied by the frequency domain resource units, wherein k₂Greater than k₁。

In an alternative embodiment of the method according to the invention,

the following expression is satisfied:

wherein N is₁、N₂、O₁、O₂、O₃、O₄Are all integers greater than 0.

Is 0 or more and O or less₁N₁-an integer of 1, and (ii) a,

is 0 or more and O or less₂N₂-an integer of 1, and (ii) a,

is 0 or more and O or less₃N₃-an integer of 1, and (ii) a,

is 0 or more and 2O or less₄-an integer of 1.

In an alternative embodiment of the method according to the invention,

the following expression is satisfied:

wherein,

in an optional implementation manner, the channel state information matrix indication information includes an indication

And

information, indication

And

and indicate

And

the information of (1).

In an alternative embodiment, P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄Is indicated by physical layer signaling or radio resource control, RRC, signaling, or, P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄Is a predefined value.

In an optional implementation manner, the channel state information matrix is a channel information matrix or a precoding matrix.

Fig. 7 is a block diagram of a communication device according to the present application, where the communication device is the second communication device, and as shown in fig. 7, the communication device includes:

a receiving module 701, configured to receive channel state information matrix indication information.

Wherein, the channel state information matrix indication information is used for indicating N₃A channel state information matrix, N₃Each channel state information matrix in the channel state information matrixes is 2N₁N₂Moment of row and columnArray, the N₃The kth channel state information matrix in the channel state information matrixes is W_k，N₃Is an integer greater than 0, k is an integer, and k is greater than or equal to 1 and less than or equal to N₃And is and

l＝1，

is the kth column of the matrix W, W ═ W¹,α_kIs a real number;

l＝2，

column 1 of (a) is the kth column of the matrix W,

column 2 of (A) is the Nth of the matrix W₃+ k columns, where W satisfies: w ═ W¹ W²]，β_k,1、β_k,2Is a real number;

W^l1,2, satisfying the following formula (1) or (3):

wherein,

satisfy the requirement of

Or,

wherein,

satisfy the requirement of

Wherein, in formula (1) and formula (3), P is an integer greater than 0, L is an integer greater than 0,

is of length N₁The line vectors of (a) are,

is of length N₂The line vectors of (a) are,

is of length N₃The line vectors of (a) are,

and

in the case of a real number,

and

is a plurality of modulo 1; in the formula (3), the first and second groups,

is a length 2 row vector.

A processing module 702, configured to determine a channel state information matrix according to the channel state information matrix indication information.

In an alternative embodiment, N is as described above₃Channel state information matrix and N₃Each frequency domain resource unit is in one-to-one correspondence, N₃The kth channel state information matrix W in the channel state information matrices_kAnd the above-mentioned N₃The kth frequency domain resource unit of the frequency domain resource units corresponds to, k is an integer, k ∈ {1,2₃}。

N is above₃Kth frequency domain resource unit₂The lowest frequency in the frequency occupied by the frequency domain resource units is more than or equal to the N₃Kth frequency domain resource unit₁The highest frequency of the frequencies occupied by the frequency domain resource units, wherein k₂Greater than k₁。

In an alternative embodiment of the method according to the invention,

the following expression is satisfied:

wherein N is₁、N₂、O₁、O₂、O₃、O₄Are all integers greater than 0.

Is 0 or more and O or less₁N₁-an integer of 1, and (ii) a,

is 0 or more and O or less₂N₂-an integer of 1, and (ii) a,

is 0 or more and O or less₃N₃-an integer of 1, and (ii) a,

is 0 or more and 2O or less₄-an integer of 1.

In an alternative embodiment of the method according to the invention,

the following expression is satisfied:

wherein,

in an optional implementation manner, the channel state information matrix indication information includes an indication

And

information, indication

And

and indicate

And

the information of (1).

In an alternative embodiment, P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄Is indicated by physical layer signaling or radio resource control, RRC, signaling, or, P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄Is a predefined value.

In an optional implementation manner, the channel state information matrix is a channel information matrix or a precoding matrix.

Fig. 8 is a block diagram of a communication apparatus provided in the present application, and as shown in fig. 8, the communication apparatus includes:

a memory 801 and a processor 802.

The memory 801 is used for storing program instructions, and the processor 802 is used for calling the program instructions in the memory 801 to realize the functions of the first communication device in the above-mentioned method embodiments.

Fig. 9 is a block diagram of a communication apparatus provided in the present application, and as shown in fig. 9, the communication apparatus includes:

a memory 901 and a processor 902.

The memory 901 is used for storing program instructions, and the processor 902 is used for calling the program instructions in the memory 901 to implement the functions of the second communication device in the above-mentioned method embodiments.

Fig. 10 is a block diagram of a chip provided in the present application, where the chip may be used in a first communication device, and as shown in fig. 10, the chip 1000 includes: at least one communication interface 1001, at least one processor 1002, and at least one memory 1003, wherein the communication interface, the processor, and the memory are interconnected by a circuit (or a bus in some cases) 1004, and the processor 1002 calls instructions stored in the memory 1003 to execute method steps corresponding to the first communication device in the above method embodiments.

Fig. 11 is a block diagram of a chip provided in the present application, where the chip may be used in a second communication device, and as shown in fig. 11, the chip includes: the communication device comprises at least one communication interface 1101, at least one processor 1102 and at least one memory 1103, wherein the communication interface, the processor and the memory are interconnected through a circuit (or a bus in some cases) 1104, and the processor 1102 calls instructions stored in the memory 1103 to execute method steps corresponding to the second communication device in the above method embodiments.

In the above embodiments, the implementation may be wholly or partially realized 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 the computer program instructions are loaded and executed on a computer, the procedures or functions described in accordance with the present application are generated, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.

Claims (34)

1. A channel state information matrix information processing method is characterized by comprising the following steps:

   the first communication device determines channel state information matrix indication information, wherein the channel state information matrix indication information is used for indicating N₃A channel state information matrix, N₃Each channel state information matrix in the channel state information matrixes is 2N₁N₂A matrix of rows and columns, N₃The kth channel state information matrix in the channel state information matrixes is W_k，N₃Is an integer greater than 0; k is an integer of 1 to N₃And is and

   l＝1，

   

   

   is the kth column of the matrix W, W ═ W¹,α_kIs a real number; or,

   when l is equal to 2, the reaction solution is,

   

   

   column 1 of (a) is the kth column of the matrix W,

   

   column 2 of (A) is the Nth of the matrix W₃+ k columns, where W satisfies: w ═ W¹ W²]，β_k,2,β_k,1Is a real number;

   W^l1,2, satisfying the following formula (1) or (3):

   

   wherein,

   

   satisfy the requirement of

   

   Or,

   

   wherein,

   

   satisfy the requirement of

   

   Wherein, in formula (1) and formula (3), P is an integer greater than 0, L is an integer greater than 0,

   

   is of length N₁The line vectors of (a) are,

   

   is of length N₂The line vectors of (a) are,

   

   is of length N₃The line vectors of (a) are,

   

   and

   

   in the case of a real number,

   

   and

   

   is a plurality of modulo 1; in the formula (3), the first and second groups,

   

   is a length 2 row vector;

   the first communication device transmits the channel state information matrix indication information.
2. The method of claim 1, wherein N is₃Channel state information matrix and N₃One-to-one correspondence of frequency domain resource units, N₃The kth channel state information matrix W in the channel state information matrices_kAnd said N₃The k frequency of the frequency domain resource unitThe domain resource units correspond, k is an integer, k ∈ {1,2₃}；

   Said N is₃Kth frequency domain resource unit₂The lowest frequency in the frequency occupied by each frequency domain resource unit is more than or equal to N₃Kth frequency domain resource unit₁The highest frequency of the frequencies occupied by the frequency domain resource units, wherein k₂Greater than k₁。
3. The method according to claim 1 or 2,

   

   the following expression is satisfied:

   

   

   

   

   wherein N is₁、N₂、O₁、O₂、O₃、O₄Are all integers greater than 0.

   

   Is 0 or more and O or less₁N₁-an integer of 1, and (ii) a,

   

   is 0 or more and O or less₂N₂-an integer of 1, and (ii) a,

   

   is 0 or more and O or less₃N₃-an integer of 1, and (ii) a,

   

   is 0 or more and 2O or less₄-an integer of 1.
4. The method according to any one of claims 1 to 3,

   

   the following expression is satisfied:

   

   

   

   

   wherein,

   

   
5. the method of claim 4, wherein the channel state information matrix indication information comprises an indication

   

   And

   

   information, indication

   

   And

   

   is determined by the information of (a) a,

   and indicate

   

   And

   

   the information of (1).
6. A method according to any of claims 3 to 5, wherein P, L, N is used₁、N₂、N₃、O₁、O₂、O₃、O₄Is indicated by physical layer signaling or radio resource control, RRC, signaling, or, P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄Is a predefined value.
7. The method according to any of claims 1-6, wherein the channel state information matrix is a channel information matrix or a precoding matrix.
8. A channel state information matrix information processing method is characterized by comprising the following steps:

   the second communication device receives channel state information matrix indication information, wherein the channel state information matrix indication information is used for indicating N₃A channel state information matrix, N₃Each channel state information matrix in the channel state information matrixes is 2N₁N₂A matrix of rows and columns, N₃The kth channel state information matrix in the channel state information matrixes is W_k，N₃Is an integer greater than 0, k is an integer, and k is greater than or equal to 1 and less than or equal to N₃And is and

   l＝1，

   

   

   is the kth column of the matrix W, W ═ W¹,α_kIs a real number;

   l＝2，

   

   

   column 1 of (a) is the kth column of the matrix W,

   

   column 2 of (A) is the Nth of the matrix W₃+ k columns, where W satisfies: w ═ W¹ W²]，β_k,1、β_k,2Is a real number;

   W^l1,2, satisfying the following formula (1) or (3):

   

   wherein,

   

   satisfy the requirement of

   

   Or,

   

   wherein,

   

   satisfy the requirement of

   

   Wherein, in formula (1) and formula (3), P is an integer greater than 0, L is an integer greater than 0,

   

   is of length N₁The line vectors of (a) are,

   

   is of length N₂The line vectors of (a) are,

   

   is of length N₃The line vectors of (a) are,

   

   and

   

   in the case of a real number,

   

   and

   

   is a plurality of modulo 1; in the formula (3), the first and second groups,

   

   is a length 2 row vector;

   and the second communication device determines a channel state information matrix according to the channel state information matrix indication information.
9. The method of claim 8, wherein N is₃Channel state information matrix and N₃One-to-one correspondence of frequency domain resource units, N₃The kth channel state information matrix W in the channel state information matrices_kAnd said N₃The kth frequency domain resource unit of the frequency domain resource units corresponds to, k is an integer, k ∈ {1,2₃}；

   Said N is₃Kth frequency domain resource unit₂The lowest frequency in the frequency occupied by each frequency domain resource unit is more than or equal to N₃Kth frequency domain resource unit₁The highest frequency of the frequencies occupied by the frequency domain resource units, wherein k₂Greater than k₁。
10. The method according to claim 8 or 9,

    

    the following expression is satisfied:

    

    

    

    

    wherein N is₁、N₂、O₁、O₂、O₃、O₄Are all integers greater than 0 and are each,

    

    is 0 or more and O or less₁N₁-an integer of 1, and (ii) a,

    

    is 0 or more and O or less₂N₂-an integer of 1, and (ii) a,

    

    is 0 or more and O or less₃N₃-an integer of 1, and (ii) a,

    

    is 0 or more and 2O or less₄-an integer of 1.
11. The method according to any one of claims 8 to 10,

    

    the following expression is satisfied:

    

    

    

    

    wherein,

    

    
12. the method of claim 11, wherein the channel state information matrix indication information comprises an indication

    

    And

    

    information, indication

    

    And

    

    and, indicate

    

    And

    

    the information of (1).
13. The method of claim 12, wherein the second communications device determining a channel state information matrix according to the channel state information matrix indicator information comprises:

    the second communication device obtains the indication information according to the channel state information matrix

    

    

    And

    

    the second communication device is based on

    

    O₁、O₂、O₃And the following formula, calculated to obtain

    

    

    

    

    The second communication device is based on

    

    N₁、N₂、N₃、O₁、O₂、O₃And the following formula, calculated to obtain

    

    And

    

    

    

    

    the second communication device is based on

    

    P, L, formula (1) and formula (2), calculating to obtain a channel state information matrix;

    said second communication device being in accordance with α_kOr β_k,1、β_k,2And normalizing the channel state information matrix.
14. The method of claim 12, wherein the second communications device determining a channel state information matrix according to the channel state information matrix indicator information comprises:

    the second communication device obtains the indication information according to the channel state information matrix

    

    

    And

    

    the second communication device is based on

    

    O₁、O₂、O₃、O₄And the following formula, calculated to obtain

    

    

    

    

    

    The second communication device is based on

    

    N₁、N₂、N₃、O₁、O₂、O₃、O₄And the following formula, calculated to obtain

    

    And

    

    

    

    

    

    the second communication device is based on

    

    P, L, formula (3) and formula (4), calculating to obtain a channel state information matrix;

    said second communication device being in accordance with α_kOr β_k,1、β_k,2And normalizing the channel state information matrix.
15. The method of any one of claims 10-14, wherein P, L, N is used₁、N₂、N₃、O₁、O₂、O₃、O₄Is indicated by physical layer signaling or radio resource control, RRC, signaling, or, P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄Is a predefined value.
16. The method according to any of claims 8-15, wherein the channel state information matrix is a channel information matrix or a precoding matrix.
17. A communications apparatus, comprising:

    a processing module, configured to determine channel state information matrix indication information, where the channel state information matrix indication information is used to indicate N₃A channel state information matrix, N₃A channel shapeEach channel state information matrix in the state information matrix is 2N₁N₂A matrix of rows and columns, N₃The kth channel state information matrix in the channel state information matrixes is W_k，N₃Is an integer greater than 0; k is an integer of 1 to N₃And is and

    l＝1，

    

    

    is the kth column of the matrix W, W ═ W¹,α_kIs a real number; or,

    when l is equal to 2, the reaction solution is,

    

    

    column 1 of (a) is the kth column of the matrix W,

    

    column 2 of (A) is the Nth of the matrix W₃+ k columns, where W satisfies: w ═ W¹ W²]，β_k,2,β_k,1Is a real number;

    W^l1,2, satisfying the following formula (1) or (3):

    

    wherein,

    

    satisfy the requirement of

    

    Or,

    

    wherein,

    

    satisfy the requirement of

    

    Wherein, in formula (1) and formula (3), P is an integer greater than 0, L is an integer greater than 0,

    

    is of length N₁The line vectors of (a) are,

    

    is of length N₂The line vectors of (a) are,

    

    is of length N₃The line vectors of (a) are,

    

    and

    

    in the case of a real number,

    

    and

    

    is a plurality of modulo 1; in the formula (3), the first and second groups,

    

    is a length 2 row vector;

    and the sending module is used for sending the channel state information matrix indication information.
18. The apparatus of claim 17, wherein N is₃Channel state information matrix and N₃One-to-one correspondence of frequency domain resource units, N₃The kth channel state information matrix W in the channel state information matrices_kAnd said N₃The kth frequency domain resource unit of the frequency domain resource units corresponds to, k is an integer, k ∈ {1,2₃}；

    Said N is₃Kth frequency domain resource unit₂The lowest frequency in the frequency occupied by each frequency domain resource unit is more than or equal to N₃Kth frequency domain resource unit₁The highest frequency of the frequencies occupied by the frequency domain resource units, wherein k₂Greater than k₁。
19. The apparatus of claim 17 or 18,

    

    the following expression is satisfied:

    

    

    

    

    wherein N is₁、N₂、O₁、O₂、O₃、O₄Are all integers greater than 0.

    

    Is 0 or more and O or less₁N₁-an integer of 1, and (ii) a,

    

    is 0 or more and O or less₂N₂-an integer of 1, and (ii) a,

    

    is 0 or more and O or less₃N₃-an integer of 1, and (ii) a,

    

    is 0 or more and 2O or less₄-an integer of 1.
20. The apparatus of any one of claims 17-19,

    

    the following expression is satisfied:

    

    

    

    

    wherein,

    

    
21. the apparatus of claim 20, wherein the channel state information matrix indication information comprises an indication

    

    And

    

    information, indication

    

    And

    

    and indicate

    

    And

    

    the information of (1).
22. The device of any one of claims 19-21, wherein P, L, N is used₁、N₂、N₃、O₁、O₂、O₃、O₄Is indicated by physical layer signaling or radio resource control, RRC, signaling, or, P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄Is a predefined value.
23. The apparatus of any of claims 17-22, wherein the channel state information matrix is a channel information matrix or a precoding matrix.
24. A communications apparatus, comprising:

    a receiving module, configured to receive channel state information matrix indication information, where the channel state information matrix indication information is used to indicate N₃A channel state information matrix, N₃Each channel state information matrix in the channel state information matrixes is 2N₁N₂A matrix of rows and columns, N₃The kth channel state information matrix in the channel state information matrixes is W_k，N₃Is an integer greater than 0, k is an integer, and k is greater than or equal to 1 and less than or equal to N₃And is and

    l＝1，

    

    

    is the kth column of the matrix W, W ═ W¹,α_kIs a real number;

    l＝2，

    

    

    column 1 of (a) is the kth column of the matrix W,

    

    column 2 of (A) is the Nth of the matrix W₃+ k columns, where W satisfies: w ═ W¹ W²]，β_k,1、β_k,2Is a real number;

    W^l1,2, satisfying the following formula (1) or (3):

    

    wherein,

    

    satisfy the requirement of

    

    Or,

    

    wherein,

    

    satisfy the requirement of

    

    Wherein, in formula (1) and formula (3), P is an integer greater than 0, L is an integer greater than 0,

    

    is of length N₁The line vectors of (a) are,

    

    is of length N₂The line vectors of (a) are,

    

    is of length N₃The line vectors of (a) are,

    

    and

    

    in the case of a real number,

    

    and

    

    is a plurality of modulo 1; in the formula (3), the first and second groups,

    

    is a length 2 row vector;

    and the processing module is used for determining the channel state information matrix according to the channel state information matrix indication information.
25. The apparatus of claim 24, wherein N is₃Channel state information matrix and N₃One-to-one correspondence of frequency domain resource units, N₃The kth channel state information matrix W in the channel state information matrices_kAnd said N₃The kth frequency domain resource unit of the frequency domain resource units corresponds to, k is an integer, k ∈ {1,2₃}；

    Said N is₃Kth frequency domain resource unit₂The lowest frequency in the frequency occupied by each frequency domain resource unit is more than or equal to N₃Kth frequency domain resource unit₁The highest frequency of the frequencies occupied by the frequency domain resource units, wherein k₂Greater than k₁。
26. The apparatus of claim 24 or 25,

    

    the following expression is satisfied:

    

    

    

    

    wherein N is₁、N₂、O₁、O₂、O₃、O₄Are all integers greater than 0 and are each,

    

    is 0 or more and O or less₁N₁-an integer of 1, and (ii) a,

    

    is 0 or more and O or less₂N₂-an integer of 1, and (ii) a,

    

    is 0 or more and O or less₃N₃-an integer of 1, and (ii) a,

    

    is 0 or more and 2O or less₄-an integer of 1.
27. The apparatus of any one of claims 24-26,

    

    the following expression is satisfied:

    

    

    

    

    wherein,

    

    
28. the apparatus of claim 27, wherein the channel state information matrix indication information comprises an indication

    

    And

    

    information, indication

    

    And

    

    and, indicate

    

    And

    

    the information of (1).
29. The apparatus of claim 28, wherein the processing module is specifically configured to:

    obtaining the channel state information matrix indication information

    

    

    And

    

    according to

    

    O₁、O₂、O₃And the following formula, calculated to obtain

    

    

    

    

    According to

    

    N₁、N₂、N₃、O₁、O₂、O₃And the following formula, calculated to obtain

    

    

    And

    

    

    

    

    according to

    

    P, L, formula (1) and formula (2), calculating to obtain a channel state information matrix;

    according to α_kOr β_k,1、β_k,2And normalizing the channel state information matrix.
30. The apparatus of claim 28, wherein the processing module is specifically configured to:

    obtaining the channel state information matrix indication information

    

    

    And

    

    according to

    

    O₁、O₂、O₃、O₄And the following formula, calculated to obtain

    

    

    

    

    

    According to

    

    N₁、N₂、N₃、O₁、O₂、O₃、O₄And the following formula, calculated to obtain

    

    And

    

    

    

    

    

    according to

    

    P, L, formula (3) and formula (4), calculating to obtain a channel state information matrix;

    according to α_kOr β_k,1、β_k,2And normalizing the channel state information matrix.
31. The device of any one of claims 26 to 20, wherein P, L, N₁、N₂、N₃、O₁、O₂、O₃、O₄Is indicated by physical layer signaling or radio resource control, RRC, signaling, or, P, L、N₁、N₂、N₃、O₁、O₂、O₃、O₄Is a predefined value.
32. The apparatus of any of claims 24-31, wherein the channel state information matrix is a channel information matrix or a precoding matrix.
33. A computer-readable storage medium, characterized in that the computer storage medium stores a computer program comprising program instructions that, when executed by a module, cause the module to perform the method according to any one of claims 1-7.
34. A computer-readable storage medium, characterized in that the computer storage medium stores a computer program comprising program instructions that, when executed by a module, cause the module to perform the method according to any one of claims 8-16.

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