CN117997495A

CN117997495A - Transmission indicating method, device and system

Info

Publication number: CN117997495A
Application number: CN202211380169.5A
Authority: CN
Inventors: 高翔; 董昶钊; 刘显达; 张哲宁; 刘鹍鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-11-05
Filing date: 2022-11-05
Publication date: 2024-05-07
Also published as: WO2024094070A1

Abstract

The application provides a transmission indicating method, equipment and a system, wherein the method comprises the following steps: transmitting one of first indication information and second indication information, wherein the first indication information indicates a first number of spatial layers, a first precoding matrix and a first antenna port corresponding to the first number of spatial layers, and the first number of spatial layers is one of 1 to 4; the second indication information indicates the number of second spatial layers and a second precoding matrix corresponding to the number of second spatial layers, wherein the number of the second spatial layers is one of 5 to 8 spatial layers, and the transmission overhead can be effectively reduced.

Description

Transmission indicating method, device and system

Technical Field

The present application relates to the field of communications, and in particular, to a method, an apparatus, and a system for indicating transmission.

Background

In the technical field of communication, for uplink transmission, a transmission behavior of a terminal device is scheduled by a network device, and the network device needs to instruct the terminal device to transmit a number of spatial layers (also referred to as a number of transmission streams) corresponding to uplink data, a precoding matrix such as a transmit precoding matrix indication (TRANSMITTED PRECODING MATRIX INDICATOR, TPMI) and a corresponding antenna port such as a Demodulation reference signal (Demodulation REFERENCE SIGNAL, DMRS) port through indication information, so that when the terminal device transmits the uplink data, on resources such as corresponding time frequency, etc., the terminal device adopts the precoding matrix corresponding to the TPMI, and transmits the uplink data and the DMRS according to the indicated DMRS port and the number of spatial layers.

The method is based on the existing indication method that only uplink transmission of the space layer number 1 to 4 can be supported at maximum, but with gradual increase of the equipment capability, the equipment with 8 antenna capability is increased, and the equipment can support transmission of the space layer number 1 to 8, so that the indication method supporting transmission of the space layer number 1 to 8 is obtained in view of the fact that no indication method supporting transmission of the space layer number 1 to 8 is available at present, and transmission cost of the indication method can be effectively saved, so that the problem to be solved is urgent.

Disclosure of Invention

The application provides a transmission indicating method, equipment and a system, which can indicate transmission of space layer numbers 1 to 8 and can effectively reduce transmission overhead.

In a first aspect, the present application provides a method for indicating transmission, including:

transmitting one of first indication information and second indication information, wherein the first indication information indicates a first number of spatial layers, a first precoding matrix and a first antenna port corresponding to the first number of spatial layers, and the first number of spatial layers is one of 1 to 4; the second indication information indicates a second number of spatial layers, which is one of 5 to 8 of the number of spatial layers, and a second precoding matrix corresponding to the second number of spatial layers.

Wherein the first number of spatial layers (which may also be referred to as rank) comprises rank1, rank2, rank3 or rank4 and the second number of spatial layers comprises rank5, rank6, rank7 or rank8. In view of better adapting to different channel conditions or transmission requirements, a plurality of optional precoding matrices are preset for each rank, so that the corresponding precoding matrix can be indicated from the plurality of optional precoding matrices in the indication message, such as sending a precoding matrix indication (TRANSMITTED PRECODING MATRIX INDICATOR, TPMI). For distinguishing the explanation, the first indication message indicates a first precoding matrix corresponding to any one of the number of spatial layers rank1 to rank4, and the second indication message indicates a second precoding matrix corresponding to any one of the number of spatial layers rank5 to rank8. Meanwhile, in order to estimate an equivalent channel corresponding to data transmission, the indication message is used for detecting a received signal, the indication message also indicates an antenna port, the antenna port is a virtual port and can be a demodulation reference signal (DEDICATED DEMODULATION REFERENCE SIGNAL, DMRS) port, the antenna port can be a DMRS port index combination, and similarly, in order to distinguish the description, the first indication message indicates a first antenna port corresponding to any spatial layer number in rank1 to rank4, and the second indication message indicates a second antenna port corresponding to any spatial layer number in rank5 to rank8.

Further, the indication information may be a part of a field or a part of information in the signaling. The signaling may be downlink control information (Downlink Control Information, DCI) signaling, or other signaling, such as uplink control information (Uplink Control Information, UCI) signaling, radio resource control (Radio Resource Control, RRC) signaling, etc. If the DCI signaling is a DCI signaling, the format of the DCI signaling may be DCI format 0_0,DCI format 0_1,DCI format 0_2, or may be DCI format 1_0,DCI format 1_1 or DCI format 1_2.

The first indication information and the second indication information are different in field division modes, but the values of the fields of the indication information can be guaranteed to be different in rank values, and the total cost of the fields of the indication information is the same, so that blind test of the second equipment terminal on control signaling for many times can be avoided, and the processing complexity is reduced.

In one possible implementation manner, the second indication information further indicates a second antenna port corresponding to the second number of spatial layers.

For each rank, for example, rank5, rank6, rank7 or rank8, a scenario corresponding to one optional DMRS port index combination is preset, the second indication information does not need to indicate the corresponding second antenna port, that is, the second DMRS port index combination, for each rank of one or several ranks in rank5, rank6, rank7 or rank8, a value is corresponding to a plurality of optional DMRS port index combinations, for example, rank7 corresponds to two optional DMRS port index combinations, rank5, rank6 or rank8 corresponds to one optional DMRS port index combination in advance, when the second indication information indicates the rank corresponding to the plurality of optional DMRS port index combinations, the second DMRS port index combination needs to be indicated, that is, when the second indication information corresponds to rank7, the second DMRS port index combination needs to be indicated, and when the second indication information corresponds to rank5, rank6 or rank8 does not need to be indicated.

In one possible implementation manner, the first indication information includes a first field and a second field, the first field indicates one of first parameter sets, each of the first parameter sets includes a spatial layer number and a precoding matrix, the first parameter sets correspond to the spatial layer numbers 1 to 4, the second field indicates one of second parameter sets, each of the second parameter sets includes an antenna port, and each of the spatial layer numbers 1 to 4 corresponds to one of the second parameter sets; the second indication information includes a third field indicating one of third parameter sets, each of the third parameter sets including a precoding matrix, one of the third parameter sets corresponding to each of the spatial layer numbers 5 to 8, and a fourth field indicating one of fourth parameter sets, each of the fourth parameter sets including an antenna port and indicating a number of spatial layers, wherein the fourth parameter set corresponds to the spatial layer numbers 5 to 8.

The precoding matrix is a selectable precoding matrix or an index of a selectable precoding matrix and the antenna ports are selectable antenna ports or an index of selectable antenna ports. The first precoding matrix may be one of the precoding matrices and the second precoding matrix may be one of the precoding matrices. The first antenna port may be one of the antenna ports and the second antenna port may be one of the antenna ports. Specifically, the first precoding matrix may be one of the precoding matrices included in the first parameter set. The first antenna port may be one of the antenna ports included in the second parameter set corresponding to the first number of spatial layers. The second precoding matrix may be one of the precoding matrices included in the third parameter set corresponding to the second spatial layer number. The second antenna port may be one of the antenna ports comprised by a fourth set of parameters.

The first precoding matrix may be one of the precoding matrices included in the fifth parameter set corresponding to the first spatial layer number. The first antenna port may be one of the antenna ports included in a sixth parameter set corresponding to the first number of spatial layers. The second precoding matrix may be one of the precoding matrices included in the seventh parameter set or the eighth parameter set corresponding to the second spatial layer number. The second antenna port may be one of the antenna ports comprised by the eighth set of parameters.

Further, the second field indicates one of the second parameter sets may also be understood as the second field indicates one of the second parameter sets corresponding to the first spatial layer number. The second parameter set corresponds to the number of spatial layers 1 to 4, when the first indication information corresponds to the number of spatial layers 1, the second field indicates one of the second parameter sets corresponding to the number of spatial layers 1, the number of spatial layers 2 to the number of spatial layers 4, and so on; the third field indicating one of the third parameter sets may also be understood as the third field indicating one of the third parameter sets corresponding to the second spatial layer number. The third parameter set corresponds to the number of spatial layers 5 to 8, and when the first indication information corresponds to the number of spatial layers 5, the third field indicates one of the third parameter sets corresponding to the number of spatial layers 5, the number of spatial layers 6 to the number of spatial layers 8, and so on.

Since the number of the optional precoding matrixes and the number of the optional antenna port index combinations are obviously reduced in the range 5 to the range 8 compared with the range 1 to the range 4, after the different parameter sets are classified, the characteristic that the number of optional parameters of the indication information is not equal is utilized by the range 1 to the range 4 and the range 5 to the range 8, and the indication is carried out by the first indication information and the second indication information respectively, so that the cost of the indication information can be saved. For example, the second indication information needs to indicate the selected TPMI and DMRS port index combination from the selectable TMPI and DMRS port index combinations with a smaller number, and the saved overhead can be used to carry the corresponding information of the second Transport Block (TB) that needs to be transmitted, thereby saving the overhead of the whole second indication information.

In one possible implementation manner, the first indication information and the second indication information each include a fifth field and a sixth field, the fifth field indicating first coding modulation mode (Modulation and coding scheme, MCS) information, first redundancy version (Redundancy Version, RV) information, and first new data indication (New Data Indicator, NDI) information, the sixth field indicating second MCS information, second RV information, the second indication information further including a seventh field, the seventh field indicating second NDI; in the first indication information, the fifth field and the sixth field further indicate that the number of enabled TBs (or Codewords (CW)) is one, and in the second indication information, the fifth field and the sixth field further indicate that the number of enabled TBs (or CWs) is two.

Because the range value intervals corresponding to the first indication information and the second indication information are different, the range of the different value intervals corresponds to different numbers of TBs (or CWs), namely one TB (or CW) is enabled when data is transmitted, the first indication information indicates MCS, RV and NDI information corresponding to one TB, two TBs (or CWs) are enabled when data is transmitted, and the second indication information indicates MCS, RV and NDI information corresponding to two TBs. The device that receives the indication information may determine that one TB (or CW) is enabled based on the MCS, RV, and NDI information contained in the indication information, and then determine that the indication information is the first indication information, or determine that two TBs (or CWs) are enabled based on the MCS, RV, and NDI information contained in the indication information, and then determine that the indication information is the second indication information.

In one possible implementation manner, the first indication information and the second indication information each include an eighth field, where the eighth field indicates a value of the first spatial layer number or the second spatial layer number.

Based on different range of the rank to which the rank value belongs, the content that the indication information needs to indicate is different, a field for determining the rank is added in the first indication information and the second indication information, the numerical value of the field corresponds to the number of the space layers, if the first device sends the first indication information, the corresponding value in the rank field is written in 1 to 4, the second indication information is sent, the corresponding value in the rank field is written in 5 to 8, and similarly, when the second device receives the indication information, the indication information can be determined to be the first indication information according to the corresponding rank value between 1 and 4, or the indication information can be determined to be the second indication information according to the corresponding rank value between 5 and 8.

In a possible implementation manner, the first indication information includes a first field and a second field, the first field indicates one of fifth parameter sets, each of the fifth parameter sets includes a precoding matrix, each of the spatial layer numbers 1 to 4 corresponds to one of the fifth parameter sets, the second field indicates one of sixth parameter sets, each of the sixth parameter sets includes an antenna port, and each of the spatial layer numbers 1 to 4 corresponds to one of the sixth parameter sets; the second indication information includes a third field indicating one of seventh parameter sets, each of the seventh parameter sets including a precoding matrix, and each of the spatial layer numbers 5 to 8 corresponds to one of the seventh parameter sets.

Further, the first field indicates one of the fifth parameter sets may also be understood as the first field indicates one of the fifth parameter sets corresponding to the first spatial layer number. The second field indicating one of the sixth parameter sets may also be understood as the second field indicating one of the sixth parameter sets corresponding to the first spatial layer number. The third field indicating one of the seventh parameter sets may also be understood as the third field indicating one of the seventh parameter sets corresponding to the second spatial layer number. The fifth parameter set and the sixth parameter set correspond to the number of spatial layers 1 to 4, when the first indication information corresponds to the number of spatial layers 1, the first field indicates one of the fifth parameter sets corresponding to the number of spatial layers 1, the second field indicates one of the sixth parameter sets corresponding to the number of spatial layers 1, the number of spatial layers 2 to the number of spatial layers 4, and so on; the seventh parameter set corresponds to the number of spatial layers 5 to 8, and when the first indication information corresponds to the number of spatial layers 5, the third field indicates one of the seventh parameter sets corresponding to the number of spatial layers 5, the number of spatial layers 6 to the number of spatial layers 8, and so on.

In a possible implementation manner, the first indication information includes a first field and a second field, the first field indicates one of fifth parameter sets, each of the fifth parameter sets includes a precoding matrix, each of the spatial layer numbers 1 to 4 corresponds to one of the fifth parameter sets, the second field indicates one of sixth parameter sets, each of the sixth parameter sets includes an antenna port, and each of the spatial layer numbers 1 to 4 corresponds to one of the sixth parameter sets; the second indication information includes a third field indicating one of eighth parameter sets, each of the eighth parameter sets including a precoding matrix and the second antenna port, each of the spatial layer numbers 5 to 8 corresponding to one of the eighth parameter sets.

Further, the first field indicates one of the fifth parameter sets may also be understood as the first field indicates one of the fifth parameter sets corresponding to the first spatial layer number. The second field indicating one of the sixth parameter sets may also be understood as the second field indicating one of the sixth parameter sets corresponding to the first spatial layer number. The third field indicating one of the eighth parameter sets may also be understood as the third field indicating one of the eighth parameter sets corresponding to the second spatial layer number. The fifth parameter set and the sixth parameter set correspond to the number of spatial layers 1 to 4, when the first indication information corresponds to the number of spatial layers 1, the first field indicates one of the fifth parameter sets corresponding to the number of spatial layers 1, the second field indicates one of the sixth parameter sets corresponding to the number of spatial layers 1, the number of spatial layers 2 to the number of spatial layers 4, and so on; the eighth parameter set corresponds to the number of spatial layers 5 to 8, and when the first indication information corresponds to the number of spatial layers 5, the third field indicates one of the eighth parameter sets corresponding to the number of spatial layers 5, the number of spatial layers 6 to the number of spatial layers 8, and so on.

In one possible implementation, the first indication information and the second indication information each include a fifth field, the fifth field indicating first MCS information, first RV information, and first NDI information; the second information further includes a sixth field indicating second MCS information, second RV information, and second NDI information.

In a second aspect, the present application provides a method for indicating transmission, including:

Receiving one of first indication information and second indication information, wherein the first indication information indicates a first number of spatial layers, a first precoding matrix and a first antenna port corresponding to the first number of spatial layers, and the first number of spatial layers is one of 1 to 4; the second indication information indicates a second number of spatial layers, which is one of 5 to 8 of the number of spatial layers, and a second precoding matrix corresponding to the second number of spatial layers.

Further, the second parameter set corresponds to the number of spatial layers 1 to 4, when the first indication information corresponds to the number of spatial layers 1, the second field indicates one of the second parameter sets corresponding to the number of spatial layers 1, the number of spatial layers 2 to the number of spatial layers 4, and so on; the third parameter set corresponds to the number of spatial layers 5 to 8, and when the first indication information corresponds to the number of spatial layers 5, the third field indicates one of the third parameter sets corresponding to the number of spatial layers 5, the number of spatial layers 6 to the number of spatial layers 8, and so on.

In one possible implementation manner, the first indication information and the second indication information each include a fifth field and a sixth field, where the fifth field indicates first coding modulation mode MCS information, first redundancy version RV information, and first new data indicates NDI information, the sixth field indicates second MCS information, second RV information, and the second indication information further includes a seventh field, where the seventh field indicates second NDI; in the first indication information, the fifth field and the sixth field further indicate that the number of enabled transport blocks TBs is one, and in the second indication information, the fifth field and the sixth field further indicate that the number of enabled TBs is two.

Further, the fifth parameter set and the sixth parameter set correspond to the number of spatial layers 1 to 4, when the first indication information corresponds to the number of spatial layers 1, the first field indicates one of the fifth parameter sets corresponding to the number of spatial layers 1, the second field indicates one of the sixth parameter sets corresponding to the number of spatial layers 1, the number of spatial layers 2 to the number of spatial layers 4, and so on; the seventh parameter set corresponds to the number of spatial layers 5 to 8, and when the first indication information corresponds to the number of spatial layers 5, the third field indicates one of the seventh parameter sets corresponding to the number of spatial layers 5, the number of spatial layers 6 to the number of spatial layers 8, and so on.

In a possible implementation manner, the first indication information includes a first field and a second field, the first field indicates one of fifth parameter sets, each of the fifth parameter sets includes a precoding matrix, each of the spatial layer numbers 1 to 4 corresponds to one of the fifth parameter sets, the second field indicates one of sixth parameter sets, each of the sixth parameter sets includes an antenna port, and each of the spatial layer numbers 1 to 4 corresponds to one of the sixth parameter sets; the second indication information includes a third field, the third field indicating one of eighth parameter sets, each of the eighth parameter sets including a precoding matrix and an antenna port, each of the spatial layer numbers 5 to 8 corresponding to one of the eighth parameter sets including a third field, the third field indicating one of the eighth parameter sets, each of the eighth parameter sets including a precoding matrix and an antenna port, the eighth parameter sets corresponding to the spatial layer numbers 5 to 8.

Further, the fifth parameter set and the sixth parameter set correspond to the number of spatial layers 1 to 4, when the first indication information corresponds to the number of spatial layers 1, the first field indicates one of the fifth parameter sets corresponding to the number of spatial layers 1, the second field indicates one of the sixth parameter sets corresponding to the number of spatial layers 1, the number of spatial layers 2 to the number of spatial layers 4, and so on; the eighth parameter set corresponds to the number of spatial layers 5 to 8, and when the first indication information corresponds to the number of spatial layers 5, the third field indicates one of the eighth parameter sets corresponding to the number of spatial layers 5, the number of spatial layers 6 to the number of spatial layers 8, and so on.

In a third aspect, the present application provides a first device comprising at least one processor and a transceiver, said at least one processor and said transceiver being coupled, characterized in that said control means implements part or all of the operations as in the first aspect and any possible implementation of the first aspect when said at least one transceiver executes a program or instruction. The first device may be a terminal device or a network device, or may be a chip in a terminal device or a network device.

In a fourth aspect, the present application provides a second device comprising at least one processor and a transceiver, the at least one processor and the transceiver being coupled, characterized in that the control means implements some or all of the operations as in the second aspect and any possible implementation of the second aspect when the at least one transceiver executes a program or instruction. The second device may be a terminal device or a network device, or may be a chip in a terminal device or a network device.

In a fifth aspect, the present application provides a communication device comprising a communication port for performing the method of any one of the preceding aspects and the transceiving operations involved in any one of the possible implementations of any one of the preceding aspects, and a processor for performing other operations than the transceiving operations involved in any one of the preceding aspects and the possible implementations of any one of the preceding aspects. For example, when the communication device according to the fifth aspect performs the method according to the first aspect as the first device, the processor is configured to generate one of first indication information and second indication information, where the first indication information is configured to indicate one of the spatial layer numbers 1 to 4, and a corresponding first precoding matrix and first antenna port; the second indication information is used for indicating one of the space layer numbers 5 to 8 and a corresponding second precoding matrix. The communication device of the fifth aspect is configured to interpret one of the first indication information and the second indication information when the communication device performs the method of the second aspect as the second device. The communication device may be a terminal device or a network device, or may be a chip in a terminal device or a network device.

In a sixth aspect, the present application provides a method of communication, the method comprising the method of the first aspect or any of the possible implementation manners of the first aspect, and the method of the second aspect or any of the possible implementation manners of the second aspect.

In a seventh aspect, the present application provides a system comprising: a first device for performing part or all of the operations of the first aspect and any possible implementation of the first aspect, and a second device; the second device is configured to perform part or all of the operations of the second aspect and any possible implementation manner of the second aspect.

In an eighth aspect, the present application provides a computer readable storage medium having instructions stored therein which, when run on a processor, implement the method of any one of the preceding aspects and some or all of the operations included in any one of the possible implementations of any one of the preceding aspects.

In a ninth aspect, the application provides a computer program product comprising instructions which, when run on a processor, implement the method of any one of the preceding aspects and some or all of the operations included in any one of the possible implementations of any one of the preceding aspects.

In a tenth aspect, the present application provides a chip comprising: port circuitry and a processor. The port circuitry is coupled to the processor for causing the chip to perform some or all of the operations included in the method of any one of the preceding aspects and any possible implementation of any one of the preceding aspects.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flow chart of a method for indicating transmission according to an embodiment of the present application;

fig. 1-a is a flow chart of another method for indicating transmission according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a DCI;

FIG. 3 is a schematic diagram of first indication information provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of second indication information provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of another first indication information provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of another second indication information provided by an embodiment of the present application;

Fig. 7 is a schematic structural view of the first device 10 according to the embodiment of the present application;

fig. 8 is a schematic structural view of a second apparatus 20 according to an embodiment of the present application;

fig. 9 is a schematic structural view of a first apparatus 30 according to an embodiment of the present application;

Fig. 10 is a schematic structural view of a second apparatus 40 according to an embodiment of the present application;

FIG. 11 is a schematic diagram of an apparatus 50 according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a system according to an embodiment of the present application.

Detailed Description

In order to make the solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.

The terms first and second and the like in the description and in the claims of embodiments of the application, are used for distinguishing between different objects and not necessarily for describing a particular sequential order of objects. For example, the first target object and the second target object, etc., are used to distinguish between different target objects, and are not used to describe a particular order of target objects.

In embodiments of the application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more. For example, the plurality of processing units refers to two or more processing units; the plurality of systems means two or more systems.

For easy understanding, the following explanation will be given to related terms or terms used in the embodiments of the present application, where the explanation is given by taking an example that devices in a scene are disposed at a transmitting end and a receiving end:

1、DMRS

The DMRS signal is s, and in a normal case, the DMRS and the transmission data are subjected to the same precoding processing (that is, the same precoding matrix P is adopted), so that the equivalent receiving signal of the receiving end is y= HPs +n, and the receiving end can detect the data based on the DMRS estimated equivalent channel HP.

2. Demodulation DMRS

For estimating a data channel, such as a Physical Uplink (SHARED CHANNEL, PUSCH) or a Physical downlink (Physical Downlink SHARED CHANNEL, PDSCH) shared channel, or for estimating an equivalent channel matrix experienced by a control channel, such as a Physical Uplink (Physical Uplink Control Channel, PUCCH) or a Physical downlink (Physical Downlink Control Channel, PDCCH), for detection and demodulation of data. Taking PUSCH as an example, DMRS usually employs the same precoding as the transmitted data signal, so as to ensure that DMRS and data experience the same equivalent channel. Assuming that the DMRS vector sent by the sending end is s, the sent data symbol vector is x, and the DMRS and the data perform the same precoding operation (i.e. multiply by the same precoding matrix P), the corresponding received signal vector of the receiving end may be expressed as:

Data:

DMRS：

wherein, for both the data signal and the reference signal, the experienced equivalent channels are The receiving end can obtain the equivalent channel/>, based on the known DMRS vector s, by utilizing a channel estimation algorithm (such as LS channel estimation, MMSE channel estimation and the like)Multiple-input multiple-output (Multiple Input and Multiple Output, MIMO) equalization and subsequent demodulation of the data signal is accomplished based on the equivalent channel.

Since DMRS is used to estimate equivalent channelThe dimension is N _R ×r, where N _R is the number of receiving antennas, and R is the number of spatial layers (also called the number of transmission layers, the number of transmission streams, the number of data streams, or rank). Generally, one DMRS port corresponds to one rank, and for MIMO transmission with rank R, the required antenna ports (antenna ports) may also be referred to as DMRS port number R. In order to ensure the quality of channel estimation, different DMRS ports are typically orthogonal ports, and DMRS symbols corresponding to different DMRS ports are orthogonal in the frequency domain, time-frequency domain or code domain.

3、TPMI

In order to effectively ensure the transmission performance of uplink data for a MIMO system, precoding processing is generally performed on uplink multi-stream transmission signals. Assuming that a data symbol vector transmitted by a terminal side is x= [ x ₁,x₂,…,x_L]^T ], where x _l represents a transmitted data symbol corresponding to the first spatial layer, and assuming that a precoding matrix is W, a precoded transmitted signal vector may be represented as:

Wherein, Indicating the transmission symbol corresponding to the jth transmission antenna. In some practical use scenarios, taking an example that the terminal device sends data to the network device in uplink transmission, the precoding matrix adopted by the terminal device is generally indicated to the terminal device by the network device through indication information, and in comprehensive consideration of indication overhead and performance of the precoding matrix, for a codebook based system, the precoding matrix W is generally selected from a preset precoding matrix set (also referred to as a codebook). Taking a New Radio (NR) protocol as an example, w=1 for a single antenna single transmission stream transmission system. For a multi-antenna system, the network device sends indication information to the terminal device, wherein the indication information indicates TPMI, that is, indicates which of the preset precoding matrix sets the uplink precoding matrix to be used is. For example, the NR protocol defines different codebooks for 4 transmit antennas, and the range 1 to range 4, as shown in table 1, a codebook may include 4 transmit antennas, a precoding matrix set corresponding to a single transmission stream, that is, range 1, and as shown in table 2, a codebook may include 4 transmit antennas, and a precoding matrix set corresponding to a transmission stream number 2, that is, range 2. When the number of transmitting antennas is further supported to be 8, and the precoding matrix codebook of the maximum rank 8 is defined in the same manner as that shown in the present tables 1 and 2, each preset precoding matrix corresponds to one TPMI index, and different values of the number of transmission streams correspond to different tables (codebooks), which are not described in detail herein, and the correspondence provided by the embodiment of the present application is exemplified and not limited by the data in the tables.

TABLE 1

TABLE 2

In some examples, because the volume, cost, and the like of the terminal device are different, the antenna architecture and capability of the terminal device also have differences, so based on different transmitting antenna capabilities of the terminal device, the precoding matrix included in the preset precoding matrix set may be divided into all transmitting antenna incoherent transmission (Non-Coherent), all transmitting antenna supporting part Coherent transmission (Partial Coherent), and all transmitting antenna Full Coherent transmission (Full Coherent), where the antenna capability is all transmitting antenna incoherent transmission, may correspond to TPMI index=0-3 in table 1, TPMI index=0-5 in table 2, the antenna capability is all transmitting antenna supporting part Coherent transmission, may correspond to TPMI index=4-11 in table 1, TPMI index=6-13 in table 2, the antenna capability is all transmitting antenna Full Coherent transmission, corresponds to TPMI index=12-27 in table 2, TPMI index=14-21 in table 2, and so on, and the terminal device such as User Equipment (UE) may indicate the antenna capability to the UE network after determining the antenna capability, such as the UE, and indicating the different antenna capability for the UE network.

Fig. 1 is a flow chart of a transmission indicating method according to an embodiment of the present application, as shown in fig. 1, where the method includes:

S101, a first device sends one of first indication information and second indication information, wherein the first indication information indicates the number of first spatial layers, a first precoding matrix and a first antenna port corresponding to the number of the first spatial layers, and the number of the first spatial layers is one of the numbers 1 to 4 of the spatial layers; the second indication information indicates a second number of spatial layers, which is one of 5 to 8 spatial layers, and a second precoding matrix corresponding to the second number of spatial layers.

Further, the second indication information is further used for indicating a second antenna port corresponding to the second spatial layer number.

In the embodiment of the present application, the first indication information and the second indication information may be collectively referred to as indication information, where the first number of spatial layers includes rank1, rank2, rank3, or rank4, and the second number of spatial layers includes rank5, rank6, rank7, or rank8.

In some examples, the indication information may be a TPMI or a precoding matrix indication, and may also be used for channel Sounding reference signal (Sounding REFERENCE SIGNAL, SRS) resource indication (Sounding Resource indicator, SRI), for example, for the method in the present application, the TPMI is replaced by the SRI, such as the first indication information indicates one of rank1 to rank4, and the corresponding first SRI and first antenna port, and the second indication information indicates one of rank5 to rank8, and the corresponding second SRI and second antenna port. The indication Information indicates that the antenna port may be a DMRS port index combination, or may be other reference signal ports, such as an SRS port, a Phase-tracking reference signal (Phase-TRACKING REFERENCE SIGNALS, PTRS) port, a channel state Information reference signal (CHANNEL STATE Information-REFERENCE SIGNAL, CSI-RS) port, etc., where in the embodiment of the present application, the DMRS port represents a DMRS port index combination, and the first antenna port indicated by the first indication Information refers to a DMRS port index combination. Similarly, the second antenna port provided in the present application also indicates a DMRS port index combination. The embodiment of the application is described by combining the index of the ports of the TPMI and the DMRS by using the indication information, and other indication information and ports can refer to each example of the embodiment of the application, and are not expanded to be described repeatedly, but are all within the protection scope of the application.

Fig. 1-a is a flow chart of another method for indicating transmission according to an embodiment of the present application, as shown in fig. 1-a, the method includes:

S102, the second device receives one of first indication information and second indication information, wherein the first indication information indicates the number of first spatial layers, a first precoding matrix and a first antenna port corresponding to the number of the first spatial layers, and the number of the first spatial layers is one of the numbers 1 to 4 of the spatial layers; the second indication information indicates a second number of spatial layers, which is one of 5 to 8 spatial layers, and a second precoding matrix corresponding to the second number of spatial layers.

For example, the first device sends the first indication information, the second device correspondingly receives the first indication information, and similarly, the first device sends the second indication information, and the second device correspondingly receives the second indication information. The content carried by the indication information and the indicated content received by the second device are the same as those sent by the first device.

The method in the embodiment of the present application is described by taking an uplink transmission device in which the first device is a second device as an example, for example, the first device is a network device, and the second device is a terminal device.

For example, the first device is a network device, the second device is a terminal device, the first spatial layer numbers 1 to 4 may also be expressed as rank1 to rank4, including rank1, rank2, rank3, and rank4, the second spatial layer numbers 5 to 8 may also be expressed as rank5 to rank8, including rank5, rank6, rank7, and rank8, the precoding matrix includes TPMI, the first precoding matrix is a first TPMI, the second precoding matrix is a second TPMI, the antenna ports include DMRS ports, the first antenna ports are first DMRS ports, and the second antenna ports are second DMRS ports.

In one possible implementation manner, the uplink rank supported by the NR protocol, TPMI and DMRS port indication method may be extended from maximum rank4 to uplink transmission of maximum rank8, and since one CW (or one TB) corresponds to a maximum of 4 spatial layers, the network device may enable one CW (or TB) number when rank 1 to rank4 is one for the rank corresponding to the data indicating scheduling, transmit one TB or one MCS when data is transmitted, enable two CWs (or TBs) when rank 5 to rank8 is one for the rank corresponding to the data indicating scheduling, and transmit two TBs or two MCSs when data is transmitted. Further, the CW provided in the embodiment of the present application may be a TB, and is not described herein as being limited.

In some practical scenarios, the DCI is used to indicate transmission parameters corresponding to uplink or downlink data transmission (such as PUSCH or PDSCH), such as rank, precoding matrix, DMRS port, etc. corresponding to data transmission, fig. 2 is a schematic diagram of the DCI, where the DCI includes fields corresponding to the index combination of MCS, RV, NDI, TPMI, rank and DMRS ports, as shown in fig. 2, and when the corresponding scheduled data is any rank value from rank1 to rank8, or when the rank value indicated by the DCI is any rank value from rank1 to rank8, the DCI includes fields of MCS information, RV information, NDI information, and fields of tpmi+rank corresponding to two CWs (or TBs). In this indication manner, for the transmission requirement of only the corresponding MCS information, RV information and NDI information for one CW (or TB) when any one of the rank1 to rank4 is transmitted, the bit overhead occupied by the fields of the MCS information, RV information and NDI information for one CW (or TB) is wasted. Referring to fig. 2, for example, MCS information (labeled MCS TB1, 5 bits in the figure), RV information (labeled RV TB1, 2 bits in the figure) and NDI information (labeled NDI TB1, 1 bit in the figure), MCS information (labeled MCS TB2, 5 bits in the figure), RV information (labeled RV TB2, 2 bits in the figure) and NDI information (labeled NDI TB2, 1 bit in the figure), tpmi+rank (8 bits in the figure) and DMRS port (4 bits in the figure) corresponding to TB1 waste the bit overhead of one MCS information, RV information and NDI information field, i.e., 8 bits, when any rank of ranks 1 to 4 is transmitted. And for the range 1 to range 4 and the range 5 and range 8, the corresponding TPMI and DMRS port index combinations needed during transmission are not distinguished, and the maximum bit overhead required by the transmission requirements of the two ranges is required to be met when the indication message is transmitted each time, and according to the above example, the overhead of 28 bits is required each time, so that the indication overhead is large.

In order to effectively reduce the indication overhead, the indication information provided by the embodiment of the present application is shown in fig. 3 and fig. 4, fig. 3 is a schematic diagram of the first indication information provided by the embodiment of the present application, fig. 4 is a schematic diagram of the second indication information provided by the embodiment of the present application, bit overhead occupied by each field in the embodiment of the present application and the drawing is only an example, and not limited thereto, the indication information may be a part of DCI, the information indication rank may be distinguished to belong to the range 1 to the range 4 by the information carried by the indication information, be the first indication information, or the information indication rank may be distinguished to belong to the range 5 to the range 8 by the information carried by the indication information, be the second indication information, and further obtain the corresponding information according to the preset format and the indicated content of the first indication information or the second indication information.

As shown in fig. 3, the first indication information includes a first field (which may be the precoding information and the spatial layer (Precoding information and # layers) shown in fig. 3), or a Precoding information and number of layers field (which may be the precoding information and the spatial layer number) and a second field (which may be an antenna port (antenna port) and occupy 4 bits) shown in fig. 3), where the first field indicates one of the first parameter sets, and each of the first parameter sets includes the spatial layer number and the precoding matrix, such as TPMI, and further, when the first field indicates one of the first parameter sets, the indication may be the precoding matrix or an index of the precoding matrix.

The second field indicates one of the second parameter sets, each of the second parameter sets including an antenna port, such as a DMRS port, one for each of the spatial layer numbers 1 to 4. Further, when the second field indicates one of the second parameter sets, DMRS port index combinations may be indicated.

In the embodiment of the present application, in the parameter set, if the precoding matrix included in the first parameter set corresponds to the optional precoding matrix of rank 1 to rank4, the antenna ports correspond to the optional antenna ports of rank 1 to rank4, such as the optional DMRS port index combination, and the precoding matrix included in the second parameter set corresponds to the optional precoding matrix of rank 5 to rank8, the antenna ports correspond to the optional antenna ports of rank 5 to rank8, such as the optional DMRS port index combination, and so on.

Optionally, the first indication information and the second indication information provided by the application indicate the precoding matrix or the DMRS port index combination by indicating one index. Further, the parameter set provided by the application can be a table as listed in the embodiment, and can also be in other forms.

The first parameter set may be as shown in table 3, each including a rank and a TPMI value,

In table 3, a Bit field mapping index (Bit FIELD MAPPED to index) is an index column indicated by indication information, from the left side of table 3, the first column is an index indicated by indication information when all transmitting antennas can fully transmit, the second column is an index indicated by indication information when the terminal supports fully transmit, the third column is an index indicated by indication information when all transmitting antennas support partially transmit, the fourth column is an index indicated by indication information when the terminal supports partially transmit, the fifth column is an index indicated by indication information when all transmitting antennas do not transmit, the sixth column is an index indicated by indication information when the terminal has non-coherent transmit, further, after determining the index of TPMI, the TPMI can be determined according to the corresponding rank value and index of TPMI, referring to the precoding matrix set of the example, for example, if the terminal is a precoding matrix set corresponding to a first layer of which is a first index 1=1, i.e. the first column is a precoding matrix set of index 1=5, and the first column is a table of index 1=5, i.e. the index 1 to the index is obtained according to the table of the index 1

TABLE 3 Table 3

Referring to table 3, the TPMI indexes of rank 1 to rank4 and the rank values are jointly encoded in a table, and when DCI indicates, the TPMI indexes and rank values can be obtained by one index, and for the full-coherence codebook, 248 candidate values of rank 1 to rank4, rank and TPMI indexes are needed, and 8-bit indication overhead is needed.

For the second parameter set, as shown in tables 4 to 7, each item, i.e., each row, includes a relevant parameter of one DMRS port index combination, table 4 is a set of rank 1 corresponding DMRS port index combinations, table 5 is a set of rank 2 corresponding DMRS port index combinations, table 6 is a set of rank 3 corresponding DMRS port index combinations, table 7 is a set of rank4 corresponding DMRS port index combinations, and in tables 4 to 7, value index columns may be used for the second field to indicate one item in the second parameter set, the number (Number of DMRS CDM group(s) of DMRS CDM groups for which the second column has no data mapping indicates the number of code division multiplexing (Code Division Multiplexing, CDM) of the data that cannot be multiplexed currently, and the Value range of the field is as follows:

when the value is 1, it indicates that RE corresponding to the current CDM group 0 cannot multiplex data;

when the value is 2, it indicates that the REs corresponding to the current CDM group 0 and CDM group 1 cannot be multiplexed with data;

When the value is 3, it indicates that the REs corresponding to the current CDM group 0, CDM group 1, and CDM group 2 cannot be multiplexed.

Wherein, the value of the field represents the value read out according to binary code decoding, the third column of DMRS ports (s)), how many bits are used in the column depends on the range of the values in the table, and the fourth column of DMRS occupies the Number of orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols (Number of front-load symbols). Tables 4 to 7 each take DMRS-type=1, the maximum DMRS symbol number is 2 as an example, and each parameter in the second parameter set is exemplified, and the second field corresponds to an indication overhead of 4 bits. For DMRS-type=1, the maximum DMRS symbol number is 1, the second field corresponds to an indication overhead of 3 bits, for DMRS-type=2, the maximum DMRS symbol number is 1, the second field corresponds to an indication overhead of 4 bits, and for DMRS-type=2, the maximum DMRS symbol number is 2, the second field corresponds to an indication overhead of 5 bits.

TABLE 4 Table 4

Value of	Number of DMRS CDM groups without data mapping	DMRS port	OFDM symbol number occupied by DMRS
				0	1	0	1
1	1	1	1
				2	2	0	1
3	2	1	1
				4	2	2	1
5	2	3	1
				6	2	0	2
7	2	1	2
				8	2	2	2
9	2	3	2
				10	2	4	2
11	2	5	2
				12	2	6	2
13	2	7	2
				14-15	Reservation of	Reservation of	Reservation of

TABLE 5

Value of	Number of DMRS CDM groups without data mapping	DMRS port	OFDM symbol number occupied by DMRS
				0	1	0,1	1
1	2	0,1	1
				2	2	2,3	1
3	2	0,2	1
				4	2	0,1	2
5	2	2,3	2
				6	2	4,5	2
7	2	6,7	2
				8	2	0,4	2
9	2	2,6	2
				10-15	Reservation of	Reservation of	Reservation of

TABLE 6

Value of	Number of DMRS CDM groups without data mapping	DMRS port	OFDM symbol number occupied by DMRS
				0	2	0-2	1
1	2	0,1,4	2
				2	2	2,3,6	2
3-15	Reservation of	Reservation of	Reservation of

TABLE 7

Value of	Number of DMRS CDM groups without data mapping	DMRS port	OFDM symbol number occupied by DMRS
				0	2	0-3	1
1	2	0,1,4,5	2
				2	2	2,3,6,7	2
3	2	0,2,4,6	2
				4-15	Reservation of	Reservation of	Reservation of

In some examples, after receiving the first indication information, the second device may obtain a rank value based on the first field, and select a set table of corresponding DMRS port index combinations, for example, obtain rank4, and correspond to the indication in table 7 according to the second field, for example, if the index value indicated by the second field is 3, then the number of DMRS CDM groups without data mapping is 2, the DMRS ports are 0,2,4,6, and the number of OFDM symbols occupied by the DMRS is 2.

For the indication of rank5 to rank8, referring to fig. 4, the second indication information includes a third field and a fourth field, the third field (which may be a precoding information (Precoding information) field as shown in fig. 4, accounting for 5 bits) indicates one of third parameter sets, each of the third parameter sets includes a precoding matrix, such as TPMI, one third parameter set is corresponding to each spatial layer of the number of spatial layers 5 to 8, and the fourth field (which may be an antenna port and a spatial layer (antenna port and #layers) as shown in fig. 4, may also be written as an antenna port and a spatial layer number (antenna port and number of layers) field, accounting for 3 bits) indicates one of fourth parameter sets, each of the fourth parameter sets includes an antenna port, such as a DMRS port index combination, and indicates a spatial layer number, wherein the fourth parameter set corresponds to the number of spatial layers 5 to 8. That is, the fourth parameter set may be as shown in table 8, where each entry, i.e., each row, includes a relevant parameter of one DMRS port or a DMRS port index combination, table 8 is a set of DMRS port index combinations corresponding to rank5 to rank8, and table 8 may be referred to tables 4 to 7, except that if the indication information indicates that a certain entry of the fourth parameter is activated, in the DMRS port column of table 8 corresponding to the entry, the number of spatial layers indicated by the entry, i.e., the number of DMRS port index combinations included in the DMRS port(s) is the corresponding number of spatial layers, i.e., candidate rows in which values 0 and 1 are located in table 8 correspond to rank5, candidate rows in which values 2 and 3 are located correspond to rank6, candidate rows in which values 4 and 5 are located correspond to rank7, and values 6 and 7 are located correspond to rank8, for example, if the fourth field correspondence of the second indication information indicates that the Value is3, the corresponding DMRS port is 0, 2,3,4,6, and 6 are the number of DMRS port index combinations.

TABLE 8

The third parameter sets may be as shown in tables 9 to 12, where each third parameter set corresponds to an index of TPMI of rank, table 9 is an index set of TPMI corresponding to rank 5, table 10 is an index set of TPMI corresponding to rank 6, table 11 is an index set of TPMI corresponding to rank7, and table 12 is an index set of TPMI corresponding to rank 8. Tables 9 to 12 exemplify the third parameter set by taking the full coherence codebook as an example, and for the indexes of 32, 24, 16, and 8 TPMI respectively for the rank 5 to rank8, 5-bit indication overhead is required in the second indication information. The bit field mapping indexes in tables 9 to 12 and the corresponding methods of the lookup index for each of the full coherent transmission, the partial coherent transmission and the incoherent transmission can be referred to as full coherent transmission, coherent transmission and incoherent transmission supported by different antenna capabilities in the above examples.

TABLE 9

Table 10

TABLE 11

Table 12

In some examples, after receiving the second indication information, the second device may select a set of indexes of the corresponding TMPI based on the rank value obtained in the fourth field, further determine the indexes of the TMPI according to the indication of the third field, and obtain the TMPI through table 1 and table 2, for example, obtain rank6 as referred to above, and determine the indexes of the TMPI in table 10.

Further, as shown in fig. 3 and 4, the first indication information and the second indication information each include a fifth field (e.g., TB1 shown in fig. 3 and 4) and a sixth field (e.g., TB2 shown in fig. 3 and 4), the fifth field indicating the first MCS information (e.g., MCS corresponding to TB1 in fig. 3 and 4, accounting for 5 bits), the first RV information (e.g., RV corresponding to TB1 in fig. 3 and 4, accounting for 2 bits) and the first NDI information (e.g., NDI corresponding to TB1 in fig. 3 and 4, accounting for 1 bit), the sixth field indicating the second MCS information (e.g., MCS corresponding to TB2 in fig. 3 and 4, accounting for 5 bits), the second RV information (e.g., RV corresponding to TB2 in fig. 3 and 4), the second indication information further includes a seventh field (e.g., NDI for CW2, accounting for 1 bit) for indicating the second NDI, and the second indication information may be further set (e.g., reserved for 3 bits) in consideration of fixing the bit length of the indication information. Referring to fig. 3 and fig. 4, comparing the first indication information with the second indication information, it can be seen that the indication information provided by the embodiment of the present application occupies 27 bits in total, which can effectively save the indication overhead.

The MCS field corresponds to a combination of a coding rate and a modulation order preset in an MCS table as in table 13, and is used for indicating a scheduled MCS, the NDI field is used for indicating whether a scheduled PUSCH or PDSCH is newly transmitted data or retransmitted data, and the RV is used for indicating coded redundancy version information corresponding to the scheduled data.

TABLE 13

In the embodiment of the application, the rank is divided into 2 value intervals, namely, two value intervals of rank 1 to rank4 and rank 5 to rank8, the first indication information is used for indicating the rank 1 to rank4 and the corresponding parameters thereof, the second indication information is used for indicating the rank 5 to rank8 and the corresponding parameters thereof, and although the indication information needs to indicate the content which is not identical in different value intervals, the indication information can be divided into fields according to different division modes by referring to fig. 3 and 4, so that the total cost of the indication information is identical under different rank values.

Further, taking uplink transmission as an example, the network device sends a first indication message or a second indication message to the terminal device, and can determine through the number of enabled CWs (or TBs) in the indication message, so that one CW (or TB) is enabled to send the first indication message, and two CWs (or TBs) are enabled to send the second indication message. For example, the indication message, such as DCI, has different numbers of codewords supported for different rank value intervals, and the rank value is from rank1 to rank4, as shown in fig. 3, the indication message indicates one CW (or TB), and the rank value is from rank5 to rank8, as shown in fig. 4, the indication message indicates two CWs (or TBs). In some examples, if the uplink transmission of the terminal device needs to be sent on the spatial layer between rank1 and rank4, the network device needs to send the first DCI to the terminal device, if the uplink transmission of the terminal device needs to be sent on the spatial layer between rank5 and rank8, the network device needs to send the second DCI to the terminal device, the network device may first determine that 2 maximum possible CW transmissions are enabled, configure a higher layer signaling for indicating that the maximum number of CWs for DCI scheduling is 2, and the higher layer signaling may be maxNrofCodeWordsScheduledByDCI, where, further, according to whether the MCS indication and RV indication information corresponding to two CWs (or TBs) are of values I _MCS =26 and RV _id =1, for example, if neither MCS information and RV information corresponding to each TB have a special value of I _MCS =26 and RV _id =1, the corresponding two TBs are enabled, send the second DCI, and if there is a special value of I _MCS =26 and RV _id =1, the first DCI is not enabled. Similarly, the terminal device may interpret the values of the MCS field and the RV field from the received indication message, so as to determine the number of enabled CWs (or TBs), further determine the value interval to which the rank belongs, and then determine that the DCI is interpreted according to the first DCI according to the ranks 1 to 4, or determine that the DCI is interpreted according to the second DCI according to the ranks 5 to 8.

In one example, since the fifth field and the sixth field are further used to indicate that the number of enabled transmission blocks CW (or TB) is one in the first indication information, in the second indication information, the fifth field and the sixth field are further used to indicate that the number of enabled transmission blocks CW (or TB) is two, that is, based on the first indication information, data representing only one CW (or TB) is transmitted during data transmission, the second indication information represents that data of two CWs (or TBs) is transmitted during data transmission, when the terminal device receives the indication information, whether a group of I _MCS =26 and RV _id =1 special values are present in the MCS field and RV field corresponding to the first CW (or TB) and a group of I _MCS =26 and RV _id =1 special values are present in the MCS field and RV field corresponding to the second CW (or TB), if a group of values are I _MCS =26 and RV _id =1, a rank value is determined to be one of 1 to 4 values, the indication information is the first indication information, and indicates that rank1 to rank4 is a non-spatial layer is transmitted, and a corresponding MCS value is 3 and a corresponding to MCS value is rvid; if no one of the MCS field and RV field corresponding to the first CW (or TB) and the MCS field and RV field corresponding to the second CW (or TB) has a value of I _MCS =26 and RV _id =1, determining that the rank value is one of 5 to 8, where the indication information is second indication information, and indicates a method of spatial layer transmission from rank5 to rank8, and the MCS/RV/NDI field corresponding to TB1 and the MCS/RV field corresponding to TB2 have information, where the second indication information further has an NDI for CW2 field to indicate NDI.

In one possible implementation, if the network device determines that maximum possible 1 CW transmission is enabled, configuring higher layer signaling, where the number of maximum CW used to indicate DCI scheduling is 1, representing that 1 CW (or TB) is enabled, and transmitting first indication information that the range of values of rank is rank1 to rank 4.

Furthermore, the parameter set indicated by each indication information and the corresponding mode of the rank of different value intervals in the embodiment of the present application may be pre-stored first, and may be called or stored in the actual use scenario.

The embodiment of the application adopts different indication information field design methods aiming at the rank 1 to rank4 and the rank 5 to rank8, sets a common field (including MCS field and RV field corresponding to TB1, NDI field corresponding to TB1 and MCS field and RV field corresponding to TB 2) for all the rank values, is used for the terminal equipment to identify the rank interval according to the indication of the common field, determines whether the indication information is first indication information or second indication information, and obtains the indication content according to the agreed formats of various indication information. On the other hand, because the indexes of the DMRS port index combinations corresponding to different rank values in the ranks 5 to 8 are fewer in number of candidates, the rank value of the value interval and the corresponding DMRS port index combination are indicated in a combined mode, so that cost reduction can be realized, and the rank value and the corresponding DMRS port index combination index can be obtained. On the other hand, after knowing the rank values, for the third parameter sets from rank 5 to rank8, an independent design corresponding to one third parameter aggregate for each rank value is used, so that the indication overhead is further reduced, and the saved overhead can be used for bearing the NDI of the TB 2.

According to the embodiment of the application, through different range values of the two ranges of the range 1 to the range 4 and the range 5 to the range 8, corresponding indication information such as DCI fields are divided in different modes, but the same total cost of the DCI fields under different range values is ensured, and the total cost of the DCI fields under different ranges is aligned, so that blind detection of control signaling for more times of terminal equipment can be avoided, and the processing complexity is reduced. Meanwhile, the obvious difference of the number of the optional TPMI and the number of the optional DMRS port index combination indexes is fully utilized in the range from rank 5 to rank8, compared with the range from rank 1 to rank4, and the indication cost of the indication information is saved through different aggregation forms and indication modes. In addition, the DCI implicitly contains the range value interval, so that the terminal equipment can identify information corresponding to different DCIs based on the range value interval, thereby saving the cost and ensuring the accurate transmission of the indication information.

In a possible implementation manner, the indication information provided by the embodiment of the present application is shown in fig. 5 and fig. 6, and bit overhead occupied by each field in the embodiment of the present application and the fig. is only an example, and not limited thereto, fig. 5 is a schematic diagram of another first indication information provided by the embodiment of the present application, and fig. 6 is a schematic diagram of another second indication information provided by the embodiment of the present application, where, as shown in fig. 5 and fig. 6, each of the first indication information and the second indication information includes an eighth field (a rank field in fig. 5 and fig. 6), where the field is used to indicate a value of the number of spatial layers, and if the field is 000, the value is interpreted as 1, i.e. the rank field is 1, and the indication information corresponds to the indication rank1. If the field is 001, the value of the rank field is 2, and the like, and in summary, the value read by the binary code filled in the field corresponds to the rank value. In the embodiment of the present application, the corresponding rank value of the first indication information may be 1 to 4, the corresponding rank value of the second indication information may be 5 to 8, and the indication overhead of the eighth field is 3 bits.

After receiving the indication information, the terminal device can determine whether the indication information is the first indication information or the second indication information according to the rank value corresponding to the indication information, and obtain the content of the indication information according to the information formats agreed by different indication information, where the agreed formats can refer to the following examples:

The first indication information is shown in fig. 5, and includes a first field (which may be Precoding information field shown in fig. 5 and occupies 7 bits) and a second field (which may be the antanna port field shown in fig. 5 and occupies 4 bits), where the first field indicates one of the fifth parameter sets, and each of the fifth parameter sets includes a precoding matrix, such as TPMI, and each of the spatial layers 1 to 4 corresponds to one of the fifth parameter sets. That is, the fifth parameter set may be as shown in tables 14 to 17, wherein each index FIELD MAPPED to index corresponds to an index of one TPMI, table 14 is a set of indexes corresponding to TPMI for rank 1, table 15 is a set of indexes corresponding to TPMI for rank 2, table 16 is a set of indexes corresponding to TPMI for rank 3, table 17 is a set of indexes corresponding to TPMI for rank4, and for example, the bit field mapping index is an index column, from the left of table 14, the first column, the third column and the fifth column are indexes indicated by indication information, the second column is an index of TPMI at the time of full coherence, the fourth column is an index of TPMI at the time of non-coherence transmission, and further, the TPMI may be determined according to the corresponding rank value after determining the index of TPMI, referring to the precoding matrix set of the above example.

Since the first indication information has the rank field to indicate the rank value, the fifth parameter set corresponding to the TPMI index in tables 14 to 17 may independently correspond to each rank value. I.e., each rank value of rank 1 through rank4 corresponds to a TPMI index table. Taking the full-coherent codebook as an example, the numbers of indexes of the range 1 to the range 4 containing TPMI are 72, 76, 56 and 44 respectively, and 7 bits are needed to indicate the overhead.

TABLE 14

TABLE 15

Table 16

TABLE 17

The second field of the first indication information indicates one of sixth parameter sets, where each item of the sixth parameter set includes an antenna port, such as a DMRS port index combination, for the sixth parameter set, table 4 to table 7 may be referred to, one sixth parameter set may be corresponding to each spatial layer in the number of spatial layers 1 to 4, each item of the sixth parameter set, that is, each row, is used to indicate related information of the corresponding DMRS port index combination, table 4 is a set of rank 1 corresponding DMRS port index combination, table 5 is a set of rank 2 corresponding DMRS port index combination, table 6 is a set of rank 3 corresponding DMRS port index combination, table 7 is a set of rank4 corresponding DMRS port index combination, and for the sixth parameter set, a second parameter set may be referred to, which is not described herein.

The second indication information includes a third field (the third field may be precoding information and antenna ports (Precoding information AND ANTENNA ports), or as shown in fig. 6, the third field may also be precoding information/DMRS ports (Precoding information/DMRS ports), which occupy 5 bits), where in some practical application scenarios, according to scheduling requirements such as time domain or frequency domain, the second indication information is specified by a protocol or preset by a protocol, and when the rank between the ranks 5 and 8 is transmitted, each rank corresponds to a preset DMRS port index combination or each rank corresponds to a preset multiple DMRS port index combination. For example, for the case that each rank of ranks 5 to rank8 corresponds to a predetermined DMRS port index combination, the third field indicates one of the seventh parameter sets, each of the seventh parameter sets includes a precoding matrix, such as TPMI, each rank of ranks 5 to rank8 corresponds to one seventh parameter set, the seventh parameter set may refer to tables 9 to 12, table 9 is an index set of rank5 corresponds to TPMI, table 10 is an index set of rank6 corresponds to TPMI, table 11 is an index set of rank 7 corresponds to TPMI, and table 12 is an index set of rank8 corresponds to TPMI. The seventh parameter set refers to an example of the third parameter set, for example, for the full coherence codebook, for the indexes of the rank5 to the rank8, respectively corresponding to 32, 24, 16 and 8 TPMI, since the preset rank5 to the rank8 corresponds to one DMRS port index combination, no indication is needed between the network device and the terminal device, and the corresponding information of the DMRS port index combination can also be determined according to the protocol specification or the DMRS port index combination corresponding to each rank in the rank5 to the rank8 preset by the protocol. For example, if the preset correspondence relation refers to table 18, the number of DMRS CDM groups without data mapping corresponding to rank5 to rank8 is 2, the number of OFDM symbols occupied by DMRS is 1, the number of ports in the DMRS ports corresponds to rank value, if there are 5 DMRS ports with value 0 row, corresponding rank5, if there are 5 DMRS ports with value 1 row, corresponding rank6, and so on.

TABLE 18

Value of	Number of DMRS CDM groups without data mapping	DMRS port	OFDM symbol number occupied by DMRS
				0	2	0-4	1
1	2	0,1,2,3,4,6	1
				2	2	0,1,2,3,4,5,6	1
3	2	0,1,2,3,4,5,6,7	1

In some practical application scenarios, according to scheduling requirements such as time domain or frequency domain, the protocol specifies or is preset, when the rank between the ranks 5 and 8 is transmitted, each rank corresponds to a preset plurality of DMRS port index combinations, the third field is further used to indicate one item of the eighth parameter set, each item of the eighth parameter set includes a precoding matrix such as TPMI, and an antenna port, such as a DMRS port index combination, each number of spatial layers 5 to 8 corresponds to one eighth parameter set, for example, the protocol specifies that in the ranks 5 to 8, the rank5, the rank6 and the rank8 respectively correspond to one DMRS port index combination, and the rank7 corresponds to two DMRS port index combinations, so that not only can the reserved field in the indication information be fully utilized, but also the rank7 can realize flexible configuration of the DMRS port index combination. In this case, if the indication information of rank5, rank6 and rank8 is transmitted, the above example may be parameters, if the indication information of rank7 is transmitted, the seventh parameter set indicated by the third field obtains the information of the DMRS port index combination as in table 19, and then the index of the TPMI and the index of the DMRS port index combination are determined in table 20 according to one of the eighth parameter sets indicated by the third field. Table 19 is a seventh parameter set corresponding to rank7, such as a DMRS port index combination correspondence table, and table 20 is an eighth parameter set corresponding to rank7, such as a TPMI index and DMRS port index combination joint indication table.

TABLE 19

Value of	Number of DMRS CDM groups without data mapping	DMRS port	OFDM symbol number occupied by DMRS
				0	1	0,1,4,5,8,9,12	2
1	2	0,1,2,3,4,5,6	1

Table 20

Further, as shown in fig. 5 and 6, the first indication information and the second indication information each include a fifth field (e.g., TB1 shown in fig. 5 and 6), the fifth field indicating first MCS information (e.g., MCS corresponding to TB1 in fig. 5 and 6, accounting for 5 bits), first RV information (e.g., RV corresponding to TB1 in fig. 5 and 6, accounting for 2 bits), and first NDI information (e.g., NDI corresponding to TB1 in fig. 5 and 6, accounting for 1 bit). As shown in fig. 6, the second indication information further includes a sixth field, where the sixth field indicates the second MCS information (for example, MCS corresponding to TB2 in fig. 6, which occupies 5 bits), the second RV information (for example, RV corresponding to TB2 in fig. 6, which occupies 2 bits), and the second NDI (for example, NDI corresponding to TB2 in fig. 6, which occupies 1 bit), and it can be seen that, by comparing the first indication information and the second indication information with reference to fig. 5 and fig. 6, the indication information provided by the embodiment of the present application occupies 24 bits in total, which can effectively save the indicated overhead. The MCS field refers to table 13, rv and NDI may refer to the above examples, and the reserved field may refer to fig. 4, which is not described herein.

In the first indication information and the second indication information provided by the embodiment of the application, a rank field is arranged, and the rank can be indicated to take a value. The network device sends the first indication information of which the rank value belongs to the ranks 1 to 4, the terminal device determines that the indication information is the first indication information according to the rank value after receiving the indication information, and can read according to the indication information field division mode corresponding to the ranks 1 to 4, and similarly, if the network device sends the second indication information of which the rank value belongs to the ranks 5 to 8, the terminal device determines that the indication information is the second indication information according to the rank value after receiving the indication information, and can read according to the indication information field division mode corresponding to the ranks 5 to 8. Or referring to the parameter set in the foregoing embodiment, the terminal device does not need to distinguish whether the indication information is the first indication information or the second indication information, and may determine, according to the rank value, for example, rank7, that the parameter set corresponding to the rank7 obtains the TPMI and the DMRS port.

Since the indication information includes the rank field, the rank value can be determined. For all the rank values, the indication information is provided with a common field, namely a fifth field, including MCS, NDI and RV information corresponding to the TB1, for the second indication information corresponding to the rank5 to rank8 values, the number of corresponding optional DMRS port index combinations is 1 or 2 under each rank value constraint, then the DMRS port index combinations and the TPMI indexes are indicated in a combined mode, the purpose of reducing the cost is achieved, and the saved cost can bear the MCS, NDI and RV information corresponding to the TB2 which are needed to be borne by the indication information of the rank5 to rank 8. According to the embodiment of the application, by utilizing the characteristic that the different numbers of the TPMI indexes and the different numbers of the DMRS port index data exist in the range 1 to range 4 value interval and the range 5 to range 8 value interval, namely, the range 5 to range 8 need to indicate the selected TPMI and DMRS port index combination from the selectable TMPI and the selectable DMRS port index combination with fewer numbers, the indication is carried out corresponding to different parameter sets, and the expenditure of the whole indication information is reduced. In addition, for each rank value of the ranks 1 to 4, a TPMI index table is independent, so that the indication overhead is effectively reduced. For the range 5 to range 8, based on the characteristics that the number of the DMRS port indexes is small and the numbers of the indexes of the range 5 to 8 TPMI have large differences for different ranges, for example, only one or two DMRS port index combinations corresponding to each range are provided, by carrying out joint indication on the TPMI and the DMRS ports, the indication of 2 information of the TPMI index and the DMRS port combinations can be realized with small indication cost. And then, the indication of the MCS, NDI, RV information of the overhead indication TB2 saved by the TPMI indication and the DMRS port combination indication is utilized, so that the overall overhead of the indication information is reduced.

In addition, the embodiment of the present application further provides a first device, as shown in fig. 7, and fig. 7 is a schematic structural diagram of the first device 10 according to the embodiment of the present application. The first device 10 shown in fig. 7 comprises a transceiver unit 101, a processing unit 102. The first device 10 may be used to perform the method S101 in the above embodiments. The first device 10 corresponds to the network device exemplified in the above method when the first device 10 is used for uplink transmission indication and performs the method S101 in the above embodiment, and the first device 10 corresponds to the terminal device when the first device 10 is used for downlink transmission indication and performs the method S101 in the above embodiment. The indication message sent by the first device 10 includes a first indication message and a second indication message, which may be referred to as examples in the above embodiments.

The embodiment of the application also provides a second device, as shown in fig. 8, and fig. 8 is a schematic structural diagram of the second device 20 according to the embodiment of the application. The second device 20 shown in fig. 8 comprises a transceiver unit 201, a processing unit 202. The second device 20 may be used to perform the method S102 in the above embodiments. The second device 20 corresponds to the terminal device exemplified in the above method when the second device 20 is used for uplink transmission indication, and performs the method S102 in the above embodiment, and the second device 20 corresponds to the network device when the second device 20 is used for downlink transmission indication, and performs the method S102 in the above embodiment. The indication message sent by the second device 20 comprises a first indication message and a second indication message, which may be referred to as examples in the above embodiments.

The network device provided by the embodiments of the application may be a base station, a transceiver node (Transmission Reception point, TRP), or a gNB. The terminal device provided by the embodiment of the application can be user terminal device (Customer Premise Equipment, CPE) or UE.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. The functional units in the embodiment of the application can be integrated in one processing unit, or each unit can exist alone physically, or two or more units are integrated in one unit. For example, in the above embodiment, the transceiver unit 101 and the processing unit 102 may be the same unit or may be different units; the transceiver unit 201 and the processing unit 202 may be the same unit or different units. The integrated units described above may be implemented either in hardware, e.g. in chips, or in software functional units.

In addition, the embodiment of the present application further provides a first device 30, as shown in fig. 9, and fig. 9 is a schematic structural diagram of the first device 30 according to the embodiment of the present application. The first device 30 comprises a communication interface 301 and a processor 302 connected to the communication interface 301. The communication interface 301 may be a device such as a transceiver. The communication interface 301 may be used to perform the methods in the above embodiments and the processor 302 may be used to generate the indication information provided by the embodiments. Specifically, the communication interface 301 performs the operation of the method S101, and the processor 302 is configured to perform operations other than the transceiving operation performed by the first device 30 in the method.

The embodiment of the present application further provides a second device 40, referring to fig. 10, and fig. 10 is a schematic structural diagram of the second device 40 according to the embodiment of the present application. The second device 40 comprises a communication interface 401 and a processor 402 connected to the communication interface 401. The communication interface 401 may be a device such as a transceiver. The communication interface 401 may be used to perform the methods in the above embodiments and the processor 402 may be used to interpret the indication information provided by the embodiments. Specifically, the communication interface 401 performs the operation of the method S101, and the processor 402 is configured to perform operations other than the transceiving operation performed by the second device 40 in the method.

In addition, the embodiment of the application further provides a device 50, referring to fig. 11, and fig. 11 is a schematic structural diagram of the device 50 according to the embodiment of the application. As shown in fig. 11, the device 50 may include a processor 501, a memory 502 coupled to the processor 501, and a transceiver 503. The transceiver 503 may be a communication interface, an optical module, etc. for receiving messages or data information, etc. The processor 501 may be a central processing unit (central processing unit, CPU), a network processor (network processor, NP) or a combination of CPU and NP for performing the forwarding process related steps in the device as exemplified in the above embodiments. The processor may also be an application-specific integrated circuit (ASIC), a programmable logic device (programmable logic device, PLD), or a combination thereof. The PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array (FPGA) GATE ARRAY, generic array logic (GENERIC ARRAY logic, GAL), or any combination thereof. Processor 501 may refer to one processor or may include multiple processors. The memory 502 may include volatile memory (RAM), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as read-only memory (ROM), flash memory (flash memory), hard disk (HARD DISK DRIVE, HDD) or solid state disk (solid-state drive (STATE DRIVE, SSD); memory 502 may also include a combination of the types of memory described above. Memory 502 may refer to a single memory or may include multiple memories for storing program instructions. In one embodiment, memory 502 has stored therein computer readable instructions comprising a plurality of software modules, such as a transmit module, a process module, and a receive module. The processor 501, after executing the respective software modules, may perform corresponding operations as directed by the respective software modules. In this embodiment, the operations performed by one software module actually refer to operations performed by the processor 501 according to instructions of the software module. Alternatively, the processor 501 may store program code or instructions for performing embodiments of the present application, in which case the processor 501 need not read the program code or instructions into the memory 502.

The apparatus 50 may be used to perform the method in the above embodiments. Specifically, the device 50 may perform the operations of the method S101 performed by the first device as a network device, and the device 50 may perform the operations of the method S102 performed by the second device as a terminal device. For example, when the device 50 is executed as a first device, the transceiver 503 is configured to perform one of transmitting first indication information and second indication information, wherein the first indication information is used for indicating one of the spatial layers 1 to 4, and the corresponding first precoding matrix and first antenna port, and the second indication information is used for indicating one of the spatial layers 5 to 8, and the corresponding second precoding matrix. The transceiver 503 is configured to receive one of the first indication information and the second indication information when the device 50 is implemented as the second device.

Embodiments of the present application also provide a computer-readable storage medium having instructions stored therein that, when executed on a processor, implement some or all of the operations in any of the methods of any of the preceding embodiments.

Embodiments of the present application also provide a computer program product comprising a computer program which, when run on a processor, implements part or all of the operations of any of the methods described in any of the preceding embodiments.

The embodiment of the present application further provides a system, as shown in fig. 12, fig. 12 is a schematic structural diagram of the system provided by the embodiment of the present application, including a first device 60 and a second device 70, where the first device 60 is a first device having a structure corresponding to fig. 7, 9 or 11, and the second device 70 is a first device having a structure corresponding to fig. 8, 10 or 11. The system described above is used to implement some or all of the operations in any of the methods described in any of the preceding embodiments.

The system provided by the embodiment of the application can be applied to, but not limited to, a long term evolution (Long Term Evolution, LTE) system, an NR system and a future mobile communication system thereof, wherein the system comprises network equipment and user equipment. The network device and the user device have a plurality of transmit antennas and receive antennas.

An embodiment of the present application also provides another communication system, including at least one memory and at least one processor, where the at least one memory stores instructions that, when executed, cause the communication system to implement some or all of the operations in any of the methods described in any of the previous embodiments.

The method provided by the embodiment of the application can be also suitable for similar wireless communication systems, such as wifi, worldwide interoperability for microwave access (World Interoperability for Microwave Access, wiMAX), a third generation partnership project (3rd Generation Partnership Project,3GPP) related MIMO system and the like.

The embodiment of the application also provides a chip, which comprises: an interface circuit and a processor. The interface circuit is connected to the processor for causing the chip to perform part or all of the operations of any of the methods described in any of the preceding embodiments.

The embodiment of the application also provides a chip system, which comprises: a processor coupled to a memory for storing programs or instructions which, when executed by the processor, cause the system-on-a-chip to perform part or all of the operations of any of the methods of any of the preceding embodiments.

Alternatively, the processor in the system-on-chip may be one or more. The processor may be implemented in hardware or in software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented in software, the processor may be a general purpose processor, implemented by reading software code stored in a memory.

Alternatively, the memory in the system-on-chip may be one or more. The memory may be integral with the processor or separate from the processor, and embodiments of the present application are not limited. The memory may be a non-transitory processor, such as a ROM, which may be integrated on the same chip as the processor, or may be separately provided on different chips, and the type of memory and the manner of providing the memory and the processor are not particularly limited in the embodiments of the present application.

The system-on-chip may be, for example, an FPGA, an ASIC, a system-on-chip (SoC), a CPU, an NP, a digital signal processing circuit (DIGITAL SIGNAL processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

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

In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, e.g., the division of units is merely a logical service division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each service unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software business units.

The integrated units, if implemented in the form of software business units and sold or used as stand-alone products, may be stored in a computer readable storage medium. With such understanding, all or part of the technical solution of the present application may be embodied in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Those skilled in the art will appreciate that in one or more of the examples described above, the services described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the services may be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The objects, technical solutions and advantageous effects of the present application have been described in further detail in the above embodiments, and it should be understood that the above are only embodiments of the present application.

The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims

1. A method of indicating transmission, comprising:

one of the first indication information and the second indication information is transmitted,

The first indication information indicates the number of first space layers, a first precoding matrix and a first antenna port, wherein the first precoding matrix and the first antenna port correspond to the number of the first space layers, and the number of the first space layers is one of the number of the space layers 1 to 4;

the second indication information indicates a second number of spatial layers, which is one of 5 to 8 of the number of spatial layers, and a second precoding matrix corresponding to the second number of spatial layers.

2. The method of claim 1, wherein the method comprises the steps of,

The second indication information further indicates a second antenna port corresponding to the second spatial layer number.

3. The method of claim 2, wherein the step of determining the position of the substrate comprises,

The first indication information comprises a first field and a second field, wherein the first field indicates one item of a first parameter set, each item of the first parameter set comprises a space layer number and a precoding matrix, the first parameter set corresponds to the space layer number of 1 to 4, the second field indicates one item of a second parameter set, each item of the second parameter set comprises an antenna port, and each space layer number of 1 to 4 corresponds to one second parameter set;

The second indication information includes a third field indicating one of third parameter sets, each of the third parameter sets including a precoding matrix, one of the third parameter sets corresponding to each of the spatial layer numbers 5 to 8, and a fourth field indicating one of fourth parameter sets, each of the fourth parameter sets including an antenna port and indicating a number of spatial layers, wherein the fourth parameter set corresponds to the spatial layer numbers 5 to 8.

4. The method of claim 3, wherein the step of,

The first indication information and the second indication information both comprise a fifth field and a sixth field, the fifth field indicates the first coding modulation Mode (MCS) information, the first Redundancy Version (RV) information and the first New Data Indication (NDI) information, the sixth field indicates the second MCS information and the second RV information, the second indication information also comprises a seventh field, and the seventh field indicates the second NDI;

In the first indication information, the fifth field and the sixth field further indicate that the number of enabled transport blocks TBs is one, and in the second indication information, the fifth field and the sixth field further indicate that the number of enabled TBs is two.

5. The method of claim 1, wherein the step of determining the position of the substrate comprises,

The first indication information includes a first field and a second field, the first field indicates one of fifth parameter sets, each of the fifth parameter sets includes a precoding matrix, each of the spatial layer numbers 1 to 4 corresponds to one of the fifth parameter sets, the second field indicates one of sixth parameter sets, each of the sixth parameter sets includes an antenna port, and each of the spatial layer numbers 1 to 4 corresponds to one of the sixth parameter sets;

the second indication information includes a third field indicating one of seventh parameter sets, each of the seventh parameter sets including a precoding matrix, and each of the spatial layer numbers 5 to 8 corresponds to one of the seventh parameter sets.

6. The method of claim 2, wherein the step of determining the position of the substrate comprises,

The second indication information includes a third field indicating one of eighth parameter sets, each of the eighth parameter sets including a precoding matrix and the second antenna port, each of the spatial layer numbers 5 to 8 corresponding to one of the eighth parameter sets.

7. The method according to claim 5 or 6, wherein,

The first indication information and the second indication information each comprise a fifth field, and the fifth field indicates first MCS information, first RV information and first NDI information;

the second information further includes a sixth field indicating second MCS information, second RV information, and second NDI information.

8. The method according to any one of claim 5 to 7, wherein,

The first indication information and the second indication information each include an eighth field, and the eighth field indicates a value of the first spatial layer number or the second spatial layer number.

9. A method of indicating transmission, comprising:

One of the first indication information and the second indication information is received,

10. The method of claim 9, wherein the step of determining the position of the probe is performed,

11. The method of claim 10, wherein the step of determining the position of the first electrode is performed,

12. The method of claim 11, wherein the step of determining the position of the probe is performed,

13. The method of claim 9, wherein the step of determining the position of the substrate comprises,

14. The method of claim 10, wherein the step of determining the position of the first electrode is performed,

The second indication information includes a third field indicating one of eighth parameter sets, each of the eighth parameter sets including a precoding matrix and antenna ports, each of the number of spatial layers 5 to 8 corresponding to one of the eighth parameter sets.

15. The method according to claim 13 or 14, wherein,

16. The method according to any one of claims 13 to 15, wherein,

17. A first device comprising at least one processor and a transceiver, the at least one processor and the transceiver being coupled, wherein the control apparatus implements the method of any of claims 1-8 when the at least one transceiver executes a program or instructions.

18. A second device comprising at least one processor and a transceiver, the at least one processor and the transceiver being coupled, wherein the control apparatus implements the method of any of claims 9 to 16 when the at least one transceiver executes a program or instructions.

19. A communication device comprising a processor and a storage medium storing instructions that when executed by the processor cause the method according to any one of claims 1 to 8 to be implemented or the method according to any one of claims 9 to 16 to be implemented.

20. A computer-readable storage medium comprising instructions which, when executed by a processor, cause the method according to any one of claims 1 to 8 to be implemented or cause the method according to any one of claims 9 to 16 to be implemented.

21. A computer program product, characterized in that it comprises instructions which, when executed by a processor, cause the method according to any one of claims 1 to 8 to be implemented, or cause the method according to any one of claims 9 to 16 to be implemented.

22. A system, comprising:

The first device of claim 17;

The second device of claim 18.