WO2020102947A1

WO2020102947A1 - Method, device and system for receiving information

Info

Publication number: WO2020102947A1
Application number: PCT/CN2018/116255
Authority: WO
Inventors: 谢信乾; 郭志恒; 程型清
Original assignee: 华为技术有限公司
Priority date: 2018-11-19
Filing date: 2018-11-19
Publication date: 2020-05-28
Also published as: CN112913154A; CN112913154B

Abstract

The present invention relates to the field of wireless communications, and embodiments of the present application provide a method, device and system for receiving information, for use in flexibly selecting a transformation matrix, further improving the flexibility of communication, and optimizing a method of linear transformation by a signal, so that a compromise of transmission reliability and complexity can be implemented. The method comprises: a network device determines first indication information, the first indication information being used for indicating a target transformation matrix, the target transformation matrix being one matrix in a transformation matrix set; and the network device sends the first indication information to a terminal device.

Description

Method, equipment and system for receiving information

Technical field

This application relates to the field of wireless communication, and in particular to a method, device and system for receiving information.

Background technique

In the field of wireless communication, transmission resources can be distributed in multiple dimensions such as time domain, frequency domain, and code domain. Taking the Long Term Evolution (LTE) system as an example, in the time domain, the maximum time unit is a radio frame with a length of 10 ms. The radio frame can be divided into 10 subframes with a length of 1 ms. Each subframe The frame can be divided into two time slots with a length of 0.5 milliseconds, and each time slot contains 6 or 7 orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols. In the frequency domain, the system divides the available frequency resources into several subcarriers, and each subcarrier occupies a bandwidth of 15000 Hz in the frequency domain. In an LTE system, the smallest unit of resources consists of the time duration of 1 OFDM symbol in the time domain and the bandwidth occupied by 1 subcarrier in the frequency domain, and is called a time-frequency resource unit. For the 5G New Radio Interface (NR) system, the smallest unit of resources is the same as that of the LTE system, and it still includes the time frequency composed of the duration of 1 OFDM symbol and the bandwidth occupied by 1 subcarrier in the frequency domain Resource unit, the difference is that a slot includes 12 or 14 OFDM symbols.

In LTE and NR systems, the bit data needs to be modulated into a signal with amplitude and phase for transmission. In order to intuitively represent the signal and the relationship between the signals, the signal is often represented by a complex number, and the complex number is called a modulation symbol . At present, the commonly used modulation methods are BPSK, QPSK, 16QAM, 64QAM and so on. The transmitting device first processes the bit signal to generate modulation symbols, and then maps the modulation symbols to time-frequency resources. The transmitting device may generate modulation symbols in a DFT-S-OFDM or OTFS manner.

In the existing OTFS method, the transmission device uses linear transformation based on DFT or IDFT for the operation of OFDM time-domain symbols, which makes each time-frequency resource unit have more modulation symbols superimposed, resulting in serious inter-symbol interference. Relatively higher-order modulation methods, such as 16QAM and 64QAM, will affect the reliability of the demodulated signal of the receiving device.

Summary of the invention

Embodiments of the present application provide a method, device, and system for receiving information, which can flexibly select a transformation matrix, thereby improving the flexibility of communication, and optimize the method of linear transformation of a signal, which can achieve a compromise between transmission reliability and complexity.

To achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

In a first aspect, an embodiment of the present application provides a method for receiving information. The method includes: a network device determines first indication information, where the first indication information is used to indicate a target transformation matrix, which is a transformation matrix set A matrix, the set of transformation matrices includes an N-order discrete Fourier transform DFT matrix, an N-order permutation matrix,

matrix,

Matrix, M-order inverse discrete Fourier transform IDFT matrix, M-order permutation matrix,

Matrix and

One or more of the matrices; where N and M are positive integers, DFT _k represents the k-th order DFT matrix, I _n represents the n-th order identity matrix, P _n represents the n-th order permutation matrix, IDFT _k represents the k-th order IDFT matrix, I _m represents the m-th order identity matrix, P _m represents the m-th order permutation matrix,

Represents Kronecker product, k * n = N, k * m = M; the network device sends the first indication information to the terminal device. Compared with the prior art, if the first indication information indicates a DFT matrix, permutation matrix or IDFT matrix, the transformation matrix can be flexibly selected according to the indication information, thereby improving the flexibility of communication; if the first indication information indicates

matrix,

Matrix or

The matrix can optimize the method of linear transformation of the signal, and then achieve a compromise between transmission reliability and complexity.

With reference to the first aspect, in a possible implementation manner, the first indication information is used to indicate a target transformation matrix, including: the first indication information is used to indicate a target modulation and coding mode MCS; the first indication information passes through the target MCS , And the correspondence between MCS and transformation matrix indicates the target transformation matrix. That is to say, the first indication information can indicate the target transformation matrix by indicating the target MCS, thereby improving the flexibility of communication and achieving a compromise between transmission reliability and complexity.

Combining the first aspect and the above possible implementation manners, in another possible implementation manner, the correspondence between MCS and transformation matrix includes: QPSK modulation method corresponds to the first transformation matrix, and 16QAM or 64QAM or 256QAM corresponds to the second transformation matrix Or, a coding rate less than a preset threshold corresponds to the first transformation matrix, and a coding rate greater than or equal to the preset threshold corresponds to the second transformation matrix. That is to say, the relationship between the modulation mode and the transformation matrix, the relationship between the coding rate and the transformation matrix can be preset as needed, and then the target transformation matrix can be determined according to the above corresponding relationship, thereby improving the flexibility of communication and achieving transmission reliability and complexity Degree of compromise.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, the first indication information is carried in downlink control information DCI. In other words, the network device can send the first indication information by sending the downlink control information DCI, and then indicate the target transformation matrix through the first indication information, thereby improving the flexibility of communication and achieving a compromise between transmission reliability and complexity.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, the method further includes: the network device determines second indication information, where the second indication information is used to indicate at least one second MCS; the network The device sends second indication information to the terminal device. That is, the corresponding relationship between the MCS and the transformation matrix can be indicated by the second indication information, and then the target transformation matrix can be indicated by the first indication information, thereby improving the flexibility of communication and achieving a compromise between transmission reliability and complexity.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, the second indication information is carried in radio resource control RRC layer signaling. That is to say, the network device may send the second indication information by sending radio resource control RRC layer signaling, and indicate the correspondence between the MCS and the transformation matrix through the second indication information, and then indicate the target transformation matrix through the first indication information, thereby Improve the flexibility of communication and achieve a compromise between transmission reliability and complexity.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, the method further includes: the network device receives the first signal from the terminal device, and the first signal is determined by the target transformation matrix; or, the The network device determines the second signal according to the target transformation matrix, and sends the second signal to the terminal device. That is, the network device can receive the first signal determined by the target transformation matrix from the terminal device, or the network device can send the second signal determined by the target transformation matrix to the terminal device, thereby improving the flexibility of communication and achieving transmission A compromise between reliability and complexity.

In a second aspect, an embodiment of the present application provides a method for receiving information. The method includes: a terminal device receives first indication information from a network device; the terminal device determines a target transformation matrix according to the first indication information, and the target transformation matrix is A matrix in a set of transformation matrices, the set of transformation matrices includes an N-order discrete Fourier transform DFT matrix, an N-order permutation matrix,

matrix,

Matrix and

Represents the Kronecker product, k * n = N, k * m = M. Compared with the prior art, if the terminal transformation matrix determined by the first indication information is the DFT matrix, the replacement matrix, and the IDFT matrix, the transformation matrix can be flexibly selected according to the indication information, thereby improving the flexibility of communication; When the target transformation matrix determined by the first indication information

matrix,

Matrix and

With reference to the second aspect, in a possible implementation manner, the terminal device determining the target transformation matrix according to the first indication information includes: the terminal device determining the target modulation and coding mode MCS according to the first indication information; the terminal device according to the target MCS, and the correspondence between MCS and transformation matrix determine the target transformation matrix. That is, the terminal device can determine the target transformation matrix according to the target MCS indicated by the first indication information, thereby improving the flexibility of communication and achieving a compromise between transmission reliability and complexity.

Combining the second aspect and the above possible implementation manners, in another possible implementation manner, the correspondence between MCS and transformation matrix includes: QPSK modulation method corresponds to the first transformation matrix, and 16QAM or 64QAM or 256QAM corresponds to the second transformation matrix Or, a coding rate less than a preset threshold corresponds to the first transformation matrix, and a coding rate greater than or equal to the preset threshold corresponds to the second transformation matrix. That is to say, the relationship between the modulation mode and the transformation matrix, the relationship between the coding rate and the transformation matrix can be preset as needed, and then the target transformation matrix can be determined according to the above corresponding relationship, thereby improving the flexibility of communication and achieving transmission reliability and complexity Degree of compromise.

With reference to the second aspect and the foregoing possible implementation manner, in another possible implementation manner, the first indication information is carried in the downlink control information DCI. That is to say, the terminal device can receive the first indication information by receiving the downlink control information DCI from the network device, and then determine the target transformation matrix through the first indication information, thereby improving the flexibility of communication, and realizing the transmission reliability and complexity compromise.

With reference to the second aspect and the foregoing possible implementation manner, in another possible implementation manner, the method further includes: the terminal device receives second indication information from the network device, and the second indication information is used to indicate at least one first Two MCS; the terminal device determines the correspondence between the MCS and the transformation matrix according to the second indication information. In other words, the terminal device can determine the correspondence between the MCS and the transformation matrix through the second indication information, and then determine the target transformation matrix through the first indication information, thereby improving the flexibility of communication and achieving a compromise between transmission reliability and complexity .

With reference to the second aspect and the foregoing possible implementation manner, in another possible implementation manner, the second indication information is carried in radio resource control RRC layer signaling. That is, the terminal device can receive the second indication information by receiving radio resource control RRC layer signaling from the network device, and determine the correspondence between the MCS and the transformation matrix through the second indication information, and then determine the target transformation through the first indication information Matrix, thereby enhancing the flexibility of communication and achieving a compromise between transmission reliability and complexity.

With reference to the second aspect and the foregoing possible implementation manner, in another possible implementation manner, the method further includes: the terminal device determining the first signal according to the target transformation matrix and sending the first signal to the network device; or, The terminal device receives a second signal from the network device, and the second signal is determined by the target transformation matrix. That is, the terminal device can send the first signal determined by the target transformation matrix to the network device, or the terminal device can receive the second signal determined by the target transformation matrix from the network device, thereby improving the flexibility of communication and achieving transmission A compromise between reliability and complexity.

In a third aspect, a network device is provided, the network device having the method and functions described in the first aspect. This function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

According to a fourth aspect, there is provided a terminal device, which has the method and function for implementing the above-mentioned second aspect. This function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

An embodiment of the present application further provides a network device, including: at least one processor, at least one memory, and a communication interface, the communication interface, the at least one memory, and the at least one processor are coupled; the network device communicates with other devices through the communication interface For device communication, the at least one memory is used to store a computer program, so that when the computer program is executed by the at least one processor, the method for receiving information as described in the first aspect and various possible implementation manners thereof is implemented.

An embodiment of the present application further provides a terminal device, including: at least one processor, at least one memory, and a communication interface, the communication interface, the at least one memory, and the at least one processor are coupled; the terminal device communicates with other devices through the communication interface For device communication, the at least one memory is used to store a computer program, so that when the computer program is executed by the at least one processor, the method for receiving information as described in the second aspect and various possible implementation manners thereof is implemented.

Embodiments of the present application also provide a computer-readable storage medium, such as a non-transitory computer-readable storage medium. A computer program is stored thereon, and when the computer program is run on the computer, the computer is caused to perform any one of the possible methods of the first aspect or any possible method of the second aspect. For example, the computer may be at least one storage node.

An embodiment of the present application further provides a computer program product, which when executed on a computer, causes any method provided in the first aspect or any method provided in the second aspect to be executed. For example, the computer may be at least one storage node.

It can be understood that any of the devices, computer storage media, or computer program products provided above are used to perform the corresponding methods provided above. Therefore, for the beneficial effects that can be achieved, refer to the benefits in the corresponding methods The effect will not be repeated here.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

2 is a schematic diagram of a hardware structure of a communication device provided by an embodiment of this application;

3 is a first schematic flowchart of a method for receiving information provided by an embodiment of the present application;

4 is a second schematic flowchart of a method for receiving information provided by an embodiment of the present application;

5 is a third schematic flowchart of a method for receiving information provided by an embodiment of the present application;

6 is a fourth schematic flowchart of a method for receiving information provided by an embodiment of the present application;

7 is a schematic structural diagram of a network device provided by an embodiment of this application;

FIG. 8 is a schematic structural diagram of a terminal device provided by 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. In the description of this application, unless otherwise stated, "/" means that the related objects are in an "or" relationship, for example, A / B can mean A or B; "and / or" in this application "Is just an association relationship that describes the association object, indicating that there can be three kinds of relationships, for example, A and / or B, which can mean: A exists alone, A and B exist at the same time, B exists alone in three cases, where A , B can be singular or plural. And, in the description of the present application, unless otherwise stated, "plurality" means two or more than two. "At least one of the following" or a similar expression refers to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one item (a) in a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be a single or multiple . In addition, in order to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first" and "second" are used to distinguish the same or similar items that have substantially the same functions and functions. Those skilled in the art may understand that the words "first" and "second" do not limit the number and execution order, and the words "first" and "second" do not necessarily mean different.

In addition, the network architecture and business scenarios described in the embodiments of the present application are intended to more clearly explain the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. With the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

As shown in FIG. 1, it is a schematic structural diagram of a communication system 100 provided by an embodiment of the present application. In FIG. 1, the communication system 100 includes a network device 101 and a terminal device 102.

The network device 101 is used to receive an uplink signal from the terminal device 102 or send a downlink signal to the terminal device 102.

The terminal device 102 is configured to send an uplink signal to the network device 101 or receive a downlink signal from the network device 101.

Optionally, the network device 101 provided by the embodiment of the present application may be, for example, a network device of LTE and / or NR, a base station (NodeB), an evolved base station (eNodeB), a base station in a 5G mobile communication system, a next-generation mobile communication base station (next generation Node B, gNB), a base station in a future mobile communication system or an access node in a Wi-Fi system, etc. This embodiment of the present application does not specifically limit this.

Optionally, the terminal device 102 provided in the embodiment of the present application may be, for example, a mobile phone, a tablet computer, a virtual reality terminal device, an augmented reality terminal device, a wireless terminal in industrial control, etc., which is not specifically limited in the embodiment of the present application.

Optionally, in this embodiment of the present application, the network device 101 or the terminal device 102 in FIG. 1 may be implemented by one device, or may be implemented by multiple devices together, or may be a functional module in one device. This is not specifically limited. It can be understood that the above function may be a network element in a hardware device, or a software function running on dedicated hardware, or a virtualized function instantiated on a platform (for example, a cloud platform).

For example, in the embodiment of the present application, the network device 101 and the terminal device 102 in FIG. 1 are implemented by the communication device in FIG. 2. FIG. 2 is a schematic diagram of a hardware structure of a communication device provided by an embodiment of the present application. The communication device 200 includes a processor 201, a communication line 202, a memory 203, and at least one communication interface 204 (only an example in FIG. 2 is illustrated by including the communication interface 204).

The processor 201 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more of which are used to control the execution of the program program of this application integrated circuit.

The communication line 202 may include a path for transferring information between the above components.

Communication interface 204, using any device such as a transceiver, for communicating with other devices or communication networks, such as Ethernet, wireless access network (RAN), wireless local area networks (WLAN), etc. .

The memory 203 may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM), or other types of information and instructions that can be stored The dynamic storage device can also be electrically erasable programmable read-only memory (electrically erasable programmable-read-only memory (EEPROM), read-only compact disc (compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be used by a computer Access to any other media, but not limited to this. The memory may exist independently, and is connected to the processor through the communication line 202. The memory can also be integrated with the processor.

The memory 203 is used to store computer execution instructions for executing the solution of the present application, and the processor 201 controls execution. The processor 201 is used to execute computer-executed instructions stored in the memory 203, thereby implementing the method for receiving information provided by the following embodiments of the present application.

Optionally, the computer execution instructions in the embodiments of the present application may also be called application program codes, which are not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the processor 201 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 2.

In a specific implementation, as an embodiment, the communication device 200 may include multiple processors, such as the processor 201 and the processor 205 in FIG. 2. Each of these processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, and / or processing cores for processing data (eg, computer program instructions).

The above-mentioned communication device 200 may be a general-purpose device or a dedicated device. In a specific implementation, the communication device 200 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a similar structure as shown in FIG. 2 device. The embodiment of the present application does not limit the type of the communication device 200.

The method for receiving information provided by the embodiments of the present application will be specifically described below with reference to FIGS. 1 to 2.

It should be noted that the name of the message between each network element or the name of each parameter in the message in the following embodiments of the present application is just an example, and other names may be used in the specific implementation, which is not specified in the embodiments of the present application. limited.

Taking the network device 101 sending a downlink signal to the terminal device 102 as an example, as shown in FIG. 3, a method for receiving information is provided for an embodiment of the present application. The method for receiving information may include the following steps:

Step 301: The network device determines first indication information. The first indication information is used to indicate a target transformation matrix, and the target transformation matrix is a matrix in a transformation matrix set, and the transformation matrix set includes an N-order discrete Fourier Transform DFT matrix, N-order permutation matrix,

matrix,

Matrix and

At least one of the matrices; where N and M are positive integers, DFT _k represents the k-th order DFT matrix, I _n represents the n-th order identity matrix, P _n represents the n-th order permutation matrix, IDFT _k represents the k-th order IDFT matrix, and I _m represents Unit matrix of order m, P _m represents the permutation matrix of order m,

Represents the Kronecker product, k * n = N, k * m = M.

In LTE and NR systems, the bit data needs to be modulated into a signal with amplitude and phase for transmission. The bit data before modulation can be expressed as a matrix X of N * M, where N and M are positive integers, and N can be a An integer multiple of the number of subcarriers in the resource block. Optionally, the number of subcarriers in one resource block in the LTE and NR systems may be 12. M can be the number of symbols in the scheduling duration at a time.

Exemplarily, the bit data before modulation may be processed by a target transformation matrix to obtain a downlink signal to be sent, and the target transformation matrix is a matrix in a transformation matrix set. The transformation matrix set may be pre-configured in the network device and the terminal device. The target transformation matrix may be the first target transformation matrix M ₁ or the second target transformation matrix M ₂ . The downlink signal Y can be expressed as Y = M ₁ * X * M ₂ , the downlink signal Y can also be expressed as Y = M ₁ * X, and the downlink signal Y can also be expressed as Y = X * M ₂ . Wherein, M ₁ may be an N * N matrix, and M ₂ may be an M * M matrix.

Exemplarily, before sending the downlink signal to the terminal device, the network device may first estimate the channel state of the terminal device through uplink measurement or downlink measurement, and then the network device may determine the transformation matrix corresponding to the downlink signal according to the channel state, so that the network The first indication information can be determined when the device determines the transformation matrix. Of course, the network device may also determine the first indication information according to other methods, which is not limited herein.

Optionally, the first indication information may be carried in the downlink control information DCI, the first indication information may be radio resource control RRC layer configuration information, and the first indication information may be media intervention control MAC layer signaling. This is not specifically limited.

Optionally, the first indication information may be indication information directly indicating the target transformation matrix, or may also be indication information indirectly indicating the target transformation matrix. Exemplarily, the first indication information may indicate the target transformation matrix by indicating the index of the target transformation matrix in the transformation matrix set, the first indication information may also indicate the target transformation matrix by indicating the modulation and coding mode MCS, and those skilled in the art may It is understood that the first indication information may also indicate the target transformation matrix in other ways, which is not specifically limited in this embodiment of the present application.

Exemplarily, the first indication information may be used to indicate the target MCS; the first indication information indicates the target transformation matrix through the target MCS and the correspondence between the MCS and the transformation matrix.

Further, the correspondence between the MCS and the transformation matrix includes: the QPSK modulation mode corresponds to the first transformation matrix, and 16QAM or 64QAM or 256QAM corresponds to the second transformation matrix; The rate is greater than or equal to the preset threshold corresponding to the second transformation matrix.

Exemplarily, the QPSK modulation method may correspond to an N-order DFT matrix, and 16QAM may correspond to an M-order permutation matrix. The coding rate less than the preset threshold can correspond to the N-order DFT matrix, and the coding rate greater than or equal to the preset threshold can correspond to

The matrix is not specifically limited in the embodiment of the present application.

Optionally, M ₁ may be an N-order discrete Fourier transform DFT matrix, an N-order permutation matrix,

Matrix or

One of the matrix. Among them, DFT _k represents the k-th order DFT matrix, I _n represents the n-th order identity matrix, P _n represents the n-th order permutation matrix,

Represents the Kronecker product, k * n = N.

Optionally, M ₂ may be an MFT inverse discrete Fourier transform IDFT matrix, an M-order permutation matrix,

Matrix or

One of the matrix. Among them, IDFT _k represents the k-th order IDFT matrix, I _m represents the m-th order identity matrix, P _m represents the m-th order permutation matrix,

Represents the Kronecker product, k * m = M.

Exemplarily, when M ₂ is

Matrix, where M = 12, k = 2, m = 6,

Exemplarily, when M ₂ is

Matrix, where M = 12, k = 2, m = 6,

Step 302: The network device sends the first indication information to the terminal device.

Step 303: The terminal device receives the first indication information from the network device.

Step 304: The network device determines the downlink signal according to the target transformation matrix.

Exemplarily, when the target transformation matrix indicated by the first indication information is M ₁ , the downlink signal Y may be expressed as Y = M ₁ * X; when the target transformation matrix indicated by the first indication information is M ₂ , the downlink signal Y It can be expressed as Y = X * M ₂ ; when the network device separately determines two indication information, one indicates the target transformation matrix is M ₁ and the other indicates the target transformation matrix is M ₂ , the downlink signal Y can be expressed as Y = M ₁ * X * M ₂ .

Step 305: The network device sends a downlink signal to the terminal device.

Step 306: The terminal device receives the downlink signal from the network device.

It should be noted that there is no fixed order for steps 302-303 and 304-306. Steps 302-303 can be executed first, followed by steps 304-306; steps 304-306 can be executed first, and then steps 302-303, This embodiment of the present application does not specifically limit this.

Step 307: The terminal device determines a target transformation matrix according to the first indication information, where the target transformation matrix is a matrix in a transformation matrix set, and the transformation matrix set includes an N-order discrete Fourier transform DFT matrix, N Order permutation matrix,

matrix,

Matrix and

Represents the Kronecker product, k * n = N, k * m = M.

Optionally, the terminal device determines the target transformation matrix according to the first indication information, the terminal device may determine the target transformation matrix according to the target transformation matrix directly indicated by the first indication information, or may indirectly indicate the target transformation matrix according to the first indication information Determine the target transformation matrix. Exemplarily, the terminal device may determine the target transformation matrix according to the index of the target transformation matrix indicated in the first indication information in the transformation matrix set, and the terminal device may also determine the target transformation matrix according to the modulation and coding mode MCS indicated by the first indication information, Those skilled in the art may understand that the terminal device may also determine the target transformation matrix according to the target transformation matrix indicated by the first indication information in other manners, which is not specifically limited in this embodiment of the present application.

Exemplarily, the terminal device may determine the target modulation and coding mode MCS according to the first indication information; the terminal device determines the target transformation matrix according to the target MCS and the correspondence between the MCS and the transformation matrix.

Further, the correspondence between the MCS and the transformation matrix includes: the QPSK modulation mode corresponds to the first transformation matrix, and 16QAM or 64QAM or 256QAM corresponds to the second transformation matrix; or, the coding rate is less than a preset threshold corresponding to the first transformation matrix, encoding The rate is greater than or equal to the preset threshold corresponding to the second transformation matrix.

Step 308: The terminal device restores the bit data before modulation according to the inverse matrix of the target transformation matrix.

Further, as shown in FIG. 4, the method for receiving information further includes steps 409-412.

Step 409: The network device determines second indication information, where the second indication information is used to indicate at least one second MCS.

Optionally, the second indication information may be radio resource control RRC layer configuration information, the second indication information may be media intervention control MAC layer signaling, and the second indication information may be carried in downlink control information DCI. This is not specifically limited.

Optionally, the second indication information may indicate the correspondence between the MCS and the transformation matrix by indicating the index of the MCS.

Exemplarily, the second indication information may indicate the corresponding relationship between the MCS and the transformation matrix by indicating that the index of the MCS is 10: MCS _0- MCS ₁₀ corresponds to the N-order DFT matrix, and MCS _11- MCS ₃₁ corresponds

matrix.

Exemplarily, the second indication information may indicate the correspondence between the MCS and the transformation matrix by indicating the indexes of the MCS as 7 and 15: MCS _0- MCS ₇ corresponds to the N-order DFT matrix, and MCS _8- MCS ₁₅ corresponds

Matrix, MCS _16- MCS31 corresponds to the N-th order permutation matrix.

Step 410: The network device sends the second indication information to the terminal device.

Step 411: The terminal device receives second indication information from the network device.

Step 412: The terminal device determines the correspondence between the MCS and the transformation matrix according to the second indication information.

Optionally, the terminal device may determine the correspondence between the MCS and the transformation matrix according to the index of the MCS indicated by the second indication information.

Exemplarily, the terminal device may determine the correspondence between the MCS and the transformation matrix according to the index 10 of the MCS indicated by the second indication information: MCS _0- MCS ₁₀ corresponds to the N-th order DFT matrix, and MCS _11- MCS ₃₁ corresponds

matrix.

Exemplarily, the terminal device may determine the correspondence between the MCS and the transformation matrix according to the indexes 7 and 15 of the MCS indicated by the second indication information: MCS _0- MCS ₇ corresponds to the N-th order DFT matrix, and MCS _8- MCS ₁₅ corresponds

Matrix, MCS _16- MCS31 corresponds to the N-th order permutation matrix.

Optionally, taking the terminal device 102 sending an uplink signal to the network device 101 as an example, as shown in FIG. 5, a method for receiving information is provided for an embodiment of the present application. The method for receiving information may include the following steps:

Step 501: The network device determines first indication information, where the first indication information is used to indicate a target transformation matrix, and the target transformation matrix is a matrix in a transformation matrix set, and the transformation matrix set includes an N-order discrete Fourier Transform DFT matrix, N-order permutation matrix,

matrix,

Matrix and

Represents the Kronecker product, k * n = N, k * m = M.

Exemplarily, the bit data before modulation may be processed by a target transformation matrix to obtain an uplink signal that needs to be sent, and the target transformation matrix is a matrix in a transformation matrix set. The transformation matrix set may be pre-configured in the network device and the terminal device. The target transformation matrix may be the first target transformation matrix M ₁ or the second target transformation matrix M ₂ . Optionally, the transmission signal Y may be expressed as Y = M ₁ * X * M ₂ , the transmission signal Y may also be expressed as Y = M ₁ * X, and the transmission signal Y may also be expressed as Y = X * M ₂ . Wherein, M ₁ may be an N * N matrix, and M ₂ may be an M * M matrix.

Matrix or

Represents the Kronecker product, k * n = N.

Matrix or

Represents the Kronecker product, k * m = M.

Step 502: The network device sends the first indication information to the terminal device.

Step 503: The terminal device receives the first indication information from the network device.

Step 504: The terminal device determines a target transformation matrix according to the first indication information, where the target transformation matrix is a matrix in a transformation matrix set, and the transformation matrix set includes a discrete Fourier transform DFT matrix of N order Order permutation matrix,

matrix,

Matrix and

Represents the Kronecker product, k * n = N, k * m = M.

Step 505: The terminal device determines the uplink signal according to the target transformation matrix.

Step 506: The terminal device sends an uplink signal to the network device.

Step 507: The network device receives the uplink signal from the terminal device.

Step 508: The network device restores the bit data before modulation according to the inverse matrix of the target transformation matrix.

Further, as shown in FIG. 6, the method for receiving information further includes steps 609-612.

Step 609: The network device determines second indication information, where the second indication information is used to indicate at least one second MCS.

Optionally, the second indication information may be radio resource control RRC layer configuration information, the second indication information may be media intervention control MAC layer signaling, and the second indication information may be carried in the downlink control information DCI. This is not specifically limited.

matrix.

Matrix, MCS _16- MCS31 corresponds to the N-th order permutation matrix.

Step 610: The network device sends the second indication information to the terminal device.

Step 611: The terminal device receives second indication information from the network device.

Step 612: The terminal device determines the correspondence between the MCS and the transformation matrix according to the second indication information.

matrix.

Matrix, MCS _16- MCS31 corresponds to the N-th order permutation matrix.

Based on the method for receiving information provided by the embodiments of the present application, on the one hand, the transformation matrix can be flexibly selected, thereby improving the flexibility of communication. On the other hand, the method of linear transformation of the signal can be optimized to achieve a compromise between transmission reliability and complexity.

The above mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between various network elements. It can be understood that, in order to realize the above-mentioned functions, the above-mentioned network device or terminal device includes a hardware structure and / or a software module corresponding to each function. Those skilled in the art should easily realize that, in combination with the exemplary units and algorithm steps described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed by hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

The embodiments of the present application may divide the function modules of the network device or the terminal device according to the above method examples, for example, each function module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above integrated modules may be implemented in the form of hardware or software function modules. It should be noted that the division of the modules in the embodiments of the present application is schematic, and is only a division of logical functions. In actual implementation, there may be another division manner.

For example, in the case of dividing each functional module in an integrated manner, FIG. 7 shows a schematic structural diagram of a network device 70. The network device 70 includes a determination module 701 and a transceiver module 702. The determining module 701 is configured to determine first indication information, and the first indication information is used to indicate a target transformation matrix, and the target transformation matrix is a matrix in a transformation matrix set, and the transformation matrix set includes an N-order discrete Fourier Leaf transform DFT matrix, N-order permutation matrix,

matrix,

Matrix and

Represents the Kronecker product, k * n = N, k * m = M. The transceiver module 702 is configured to send the first indication information to the terminal device.

Optionally, the first indication information is used to indicate a target transformation matrix, including: the first indication information is used to indicate a target modulation and coding mode MCS; the first indication information passes through the target MCS, and the MCS and transformation The corresponding relationship of the matrix indicates the target transformation matrix.

Optionally, the correspondence between the MCS and the transformation matrix includes: the QPSK modulation mode corresponds to the first transformation matrix, and 16QAM or 64QAM or 256QAM corresponds to the second transformation matrix; or, the encoding rate is less than a preset threshold corresponding to the first transformation matrix, The coding rate is greater than or equal to the preset threshold corresponding to the second transformation matrix.

Optionally, the first indication information is carried in downlink control information DCI.

Optionally, the determination module 701 is further configured to determine second indication information, and the second indication information is used to indicate at least one second MCS; the transceiver module 702 is also used to send a second Two indication information, the second indication information is used to indicate at least one second MCS.

Optionally, the second indication information is carried in radio resource control RRC layer signaling.

Wherein, all relevant content of each step involved in the above method embodiments can be referred to the function description of the corresponding function module, which will not be repeated here.

In this embodiment, the network device 70 is presented in the form of dividing each functional module in an integrated manner. The "module" herein may refer to a specific ASIC, circuit, processor and memory that execute one or more software or firmware programs, integrated logic circuits, and / or other devices that can provide the above functions. In a simple embodiment, those skilled in the art may think that the network device 70 may adopt the form shown in FIG. 2.

For example, the processor 201 in FIG. 2 may call the computer stored in the memory 203 to execute instructions, so that the network device 70 executes the method for receiving information in the foregoing method embodiment.

Exemplarily, the functions / implementation processes of the transceiver module 702 and the determination module 701 in FIG. 7 can be implemented by the processor 201 in FIG. 2 calling the computer execution instructions stored in the memory 203. Alternatively, the function / implementation process of the determination module 701 in FIG. 7 can be implemented by the processor 201 in FIG. 2 calling the computer execution instructions stored in the memory 203, and the function / implementation process of the transceiver module 702 in FIG. 2 to achieve the communication interface 204.

Since the network device 70 provided in this embodiment can execute the above-mentioned method for receiving information, for the technical effects it can obtain, reference may be made to the above-mentioned method embodiments, which will not be repeated here.

Optionally, an embodiment of the present application further provides an apparatus (for example, the apparatus may be a chip system), and the apparatus includes a processor for supporting a network device to implement the foregoing method for receiving information, for example, determining the first indication information, And send the first indication information to the terminal device. In one possible design, the device also includes a memory. The memory is used to store necessary program instructions and data of network equipment. Of course, the memory may not be in the device. When the device is a chip system, it may be composed of a chip, or may include a chip and other discrete devices, which is not specifically limited in the embodiments of the present application.

Or, for example, in the case of dividing each functional module in an integrated manner, FIG. 8 shows a schematic structural diagram of a terminal device 80. The terminal device 80 includes a transceiver module 801 and a determination module 802. The transceiver module 801 is configured to receive the first indication information from the network device. The determining module 802 is configured to determine a target transformation matrix according to the first indication information, the target transformation matrix being a matrix in a transformation matrix set, the transformation matrix set including an N-order discrete Fourier transform DFT matrix, an N-order Permutation matrix,

matrix,

Matrix and

Represents the Kronecker product, k * n = N, k * m = M.

Exemplarily, the determination module 802 is configured to determine a target modulation and coding mode MCS according to the first indication information; and determine a target transformation matrix according to the target MCS and the correspondence between the MCS and the transformation matrix.

Optionally, the transceiver module 801 is further configured to: receive second indication information from the network device, where the second indication information is used to indicate at least one second MCS; and the terminal device determines according to the second indication information The correspondence between the MCS and the transformation matrix.

In this embodiment, the terminal device 80 is presented in the form of dividing each functional module in an integrated manner. The "module" herein may refer to a specific ASIC, circuit, processor and memory that execute one or more software or firmware programs, integrated logic circuits, and / or other devices that can provide the above functions. In a simple embodiment, those skilled in the art may think that the terminal device 80 may adopt the form shown in FIG. 2.

For example, the processor 201 in FIG. 2 may call the computer stored in the memory 203 to execute instructions, so that the terminal device 80 executes the method for receiving information in the foregoing method embodiment.

Exemplarily, the functions / implementation processes of the transceiver module 801 and the determination module 802 in FIG. 8 may be implemented by the processor 201 in FIG. 2 calling the computer execution instructions stored in the memory 203. Alternatively, the function / implementation process of the determination module 802 in FIG. 8 can be implemented by the processor 201 in FIG. 2 calling a computer execution instruction stored in the memory 203, and the function / implementation process of the transceiver module 801 in FIG. 2 to achieve the communication interface 204.

Since the terminal device 80 provided in this embodiment can execute the above-mentioned method for receiving information, for the technical effects that can be obtained, reference may be made to the above-mentioned method embodiments, and details are not repeated herein.

Optionally, an embodiment of the present application further provides an apparatus (for example, the apparatus may be a chip system). The apparatus includes a processor for supporting the terminal device to implement the foregoing method for receiving a message, for example, receiving the first Indication information, and determine the target transformation matrix according to the first indication information. In one possible design, the device also includes a memory. The memory is used to store necessary program instructions and data of the terminal device. Of course, the memory may not be in the device. When the device is a chip system, it may be composed of a chip, or may include a chip and other discrete devices, which is not specifically limited in the embodiments of the present application.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it can 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 the computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. 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 from a website site, computer, server or data center Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as 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 including one or more servers and data centers that can be integrated with the medium. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)) or the like.

Although this application has been described in conjunction with various embodiments herein, in the process of implementing the claimed application, those skilled in the art can understand and understand by looking at the drawings, the disclosure, and the appended claims Other changes to the disclosed embodiments are implemented. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality. A single processor or other unit may fulfill several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the present application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to cover any and all modifications, changes, combinations, or equivalents within the scope of the present application. Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

A method for receiving information, characterized in that the method for receiving information includes:

The network device determines first indication information, and the first indication information is used to indicate a target transformation matrix, and the target transformation matrix is a matrix in a transformation matrix set, and the transformation matrix set includes an N-order discrete Fourier transform DFT matrix , N-order permutation matrix,
matrix,
Matrix, M-order inverse discrete Fourier transform IDFT matrix, M-order permutation matrix,
Matrix and
At least one of the matrices; where N and M are positive integers, DFT k represents the k-th order DFT matrix, I n represents the n-th order identity matrix, P n represents the n-th order permutation matrix, IDFT k represents the k-th order IDFT matrix, and I m represents Unit matrix of order m, P m represents the permutation matrix of order m,
Represents Kronecker product, k * n = N, k * m = M;

The network device sends the first indication information to the terminal device.
The method for receiving information according to claim 1, wherein the first indication information used to indicate the target transformation matrix includes:

The first indication information is used to indicate a target modulation and coding mode MCS;

The first indication information indicates the target transformation matrix through the target MCS and the correspondence between the MCS and the transformation matrix.
The method for receiving information according to claim 2, wherein the correspondence between the MCS and the transformation matrix includes:

The QPSK modulation method corresponds to the first transformation matrix, and 16QAM or 64QAM or 256QAM corresponds to the second transformation matrix; or,

A coding rate less than a preset threshold corresponds to a first transformation matrix, and a coding rate greater than or equal to the preset threshold corresponds to a second transformation matrix.
The method for receiving information according to any one of claims 1-3, characterized in that:

The first indication information is carried in the downlink control information DCI.
The method for receiving information according to any one of claims 1 to 4, wherein the method for receiving information further comprises:

The network device determines second indication information, where the second indication information is used to indicate at least one second MCS;

The network device sends the second indication information to the terminal device.
The method for receiving information according to claim 5, characterized in that:

The second indication information is carried in radio resource control RRC layer signaling.
The method for receiving information according to any one of claims 1-6, wherein the method for receiving information further comprises:

The network device receives a first signal from the terminal device, the first signal is determined by the target transformation matrix; or,

The network device determines a second signal according to the target transformation matrix, and sends the second signal to the terminal device.
A method for receiving information, characterized in that the method for receiving information includes:

The terminal device receives the first indication information from the network device;

The terminal device determines a target transformation matrix according to the first indication information, and the target transformation matrix is a matrix in a transformation matrix set, and the transformation matrix set includes an N-order discrete Fourier transform DFT matrix and an N-order substitution matrix ,
matrix,
Matrix, M-order inverse discrete Fourier transform IDFT matrix, M-order permutation matrix,
Matrix and
At least one of the matrices; where N and M are positive integers, DFT k represents the k-th order DFT matrix, I n represents the n-th order identity matrix, P n represents the n-th order permutation matrix, IDFT k represents the k-th order IDFT matrix, and I m represents Unit matrix of order m, P m represents the permutation matrix of order m,
Represents the Kronecker product, k * n = N, k * m = M.
The method for receiving information according to claim 8, wherein the terminal device determining the target transformation matrix according to the first indication information includes:

The terminal device determines a target modulation and coding mode MCS according to the first indication information;

The terminal device determines the target transformation matrix according to the target MCS and the correspondence between the MCS and the transformation matrix.
The method for receiving information according to claim 9, wherein the correspondence between the MCS and the transformation matrix includes:

The QPSK modulation method corresponds to the first transformation matrix, and 16QAM or 64QAM or 256QAM corresponds to the second transformation matrix; or,

A coding rate less than a preset threshold corresponds to a first transformation matrix, and a coding rate greater than or equal to the preset threshold corresponds to a second transformation matrix.
The method for receiving information according to any one of claims 8-10, characterized in that:

The first indication information is carried in the downlink control information DCI.
The method for receiving information according to any one of claims 9-11, wherein the method for receiving information further comprises:

The terminal device receives second indication information from the network device, where the second indication information is used to indicate at least one second MCS;

The terminal device determines the correspondence between the MCS and the transformation matrix according to the second indication information.
The method of receiving information according to claim 12, characterized in that:

The second indication information is carried in radio resource control RRC layer signaling.
The method for receiving information according to any one of claims 8-13, wherein the method for receiving information further comprises:

The terminal device determines a first signal according to the target transformation matrix, and sends the first signal to the network device; or,

The terminal device receives a second signal from the network device, and the second signal is determined by the target transformation matrix.
A network device, characterized in that the network device includes:

The determining module is used to determine first indication information, and the first indication information is used to indicate a target transformation matrix, and the target transformation matrix is a matrix in a transformation matrix set, and the transformation matrix set includes an N-order discrete Fourier Transform DFT matrix, N-order permutation matrix,
matrix,
Matrix, M-order inverse discrete Fourier transform IDFT matrix, M-order permutation matrix,
Matrix and
At least one of the matrices; where N and M are positive integers, DFT k represents the k-th order DFT matrix, I n represents the n-th order identity matrix, P n represents the n-th order permutation matrix, IDFT k represents the k-th order IDFT matrix, and I m represents Unit matrix of order m, P m represents the permutation matrix of order m,
Represents Kronecker product, k * n = N, k * m = M;

The transceiver module is configured to send the first indication information to the terminal device.
The network device according to claim 15, wherein the first indication information used to indicate the target transformation matrix includes:

The first indication information is used to indicate a target modulation and coding mode MCS;

The first indication information indicates the target transformation matrix through the target MCS and the correspondence between the MCS and the transformation matrix.
The network device according to claim 16, wherein the correspondence between the MCS and the transformation matrix includes:

The QPSK modulation method corresponds to the first transformation matrix, and 16QAM or 64QAM or 256QAM corresponds to the second transformation matrix; or,

A coding rate less than a preset threshold corresponds to a first transformation matrix, and a coding rate greater than or equal to the preset threshold corresponds to a second transformation matrix.
The network device according to any one of claims 15-17, characterized in that:

The first indication information is carried in the downlink control information DCI.
The network device according to any one of claims 15 to 18, characterized in that

The determining module is further configured to determine second indication information, where the second indication information is used to indicate at least one second MCS;

The transceiver module is further configured to send second indication information to the terminal device, where the second indication information is used to indicate at least one second MCS.
The network device according to claim 19, characterized in that:

The second indication information is carried in radio resource control RRC layer signaling.
A terminal device, characterized in that the terminal device includes:

The transceiver module is used to receive the first indication information from the network device;

A determining module, configured to determine a target transformation matrix according to the first indication information, the target transformation matrix being a matrix in a transformation matrix set, the transformation matrix set including an N-order discrete Fourier transform DFT matrix, an N-order substitution matrix,
matrix,
Matrix, M-order inverse discrete Fourier transform IDFT matrix, M-order permutation matrix,
Matrix and
At least one of the matrices; where N and M are positive integers, DFT k represents the k-th order DFT matrix, I n represents the n-th order identity matrix, P n represents the n-th order permutation matrix, IDFT k represents the k-th order IDFT matrix, and I m represents Unit matrix of order m, P m represents the permutation matrix of order m,
Represents the Kronecker product, k * n = N, k * m = M.
The terminal device according to claim 21, wherein the determination module is specifically configured to:

Determine the target modulation and coding mode MCS according to the first indication information;

The target transformation matrix is determined according to the target MCS and the correspondence between the MCS and the transformation matrix.
The terminal device according to claim 21, wherein the correspondence between the MCS and the transformation matrix includes:

The QPSK modulation method corresponds to the first transformation matrix, and 16QAM or 64QAM or 256QAM corresponds to the second transformation matrix; or,

A coding rate less than a preset threshold corresponds to a first transformation matrix, and a coding rate greater than or equal to the preset threshold corresponds to a second transformation matrix.
The terminal device according to any one of claims 21 to 23, characterized in that:

The first indication information is carried in the downlink control information DCI.
The terminal device according to any one of claims 22-24, wherein the transceiver module is further used to:

Receiving second indication information from the network device, where the second indication information is used to indicate at least one second MCS;

The terminal device determines the correspondence between the MCS and the transformation matrix according to the second indication information.
The terminal device according to claim 25, characterized in that:

The second indication information is carried in radio resource control RRC layer signaling.
A network device includes: at least one processor, at least one memory, and a communication interface, characterized in that

The communication interface and the at least one memory are coupled with the at least one processor; the network device communicates with other devices through the communication interface, and the at least one memory is used to store a computer program so that the computer program is The at least one processor implements the method for receiving information according to any one of claims 1-7 when executed.
A terminal device includes: at least one processor, at least one memory, and a communication interface, characterized in that

The communication interface and the at least one memory are coupled with the at least one processor; the terminal device communicates with other devices through the communication interface, and the at least one memory is used to store a computer program so that the computer program is When executed by the at least one processor, the method for receiving information according to any one of claims 8 to 14 is implemented.
A computer-readable storage medium, characterized in that it includes a computer program, and when the computer program runs on at least one storage node, the at least one storage node performs the reception according to any one of claims 1-14 Information method.
A computing device program product, characterized in that, when the computing device program product is executed by at least one storage node, the at least one computing device executes the method for receiving information according to any one of claims 1-14.