CN114867058A

CN114867058A - CSI feedback method and device, storage medium, terminal and network equipment

Info

Publication number: CN114867058A
Application number: CN202110149376.9A
Authority: CN
Inventors: 陈咪咪; 周化雨
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2022-08-05
Also published as: WO2022166445A1

Abstract

A CSI feedback method and device, a storage medium, a terminal and a network device are provided, wherein the method comprises the following steps: generating CSI feedback information according to the parameters of the CSI feedback information; and reporting the CSI feedback information to network equipment. Therefore, the UE can select a network or a network intermediate layer used for generating the CSI feedback information by itself and report the CSI feedback information according to the network or the network intermediate layer.

Description

CSI feedback method and device, storage medium, terminal and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a CSI feedback method and apparatus, a storage medium, a terminal, and a network device.

Background

The radio channel conditions are constantly changing, and if the downlink uses Quadrature Phase Shift Keying (QPSK) instead of a higher-order modulation scheme for transmission, it will reduce the utilization of the spectrum and cause a decrease in throughput, assuming that the channel quality is good. If the channel quality is poor, if the high-order modulation is used instead of the QPSK modulation, excessive retransmissions are caused, and excessive radio resources are also used. In either case, the radio resources cannot be effectively used. In order to better adapt to the variation of the radio Channel, a User Equipment (UE) may report downlink Channel quality Information to a base station (gNB) through Channel State Information (CSI), so that the gNB may select a better Modulation and Coding Scheme (MCS) or a more appropriate Precoding Matrix (PMI), and the like.

Specifically, the UE obtains the CSI by measuring a received Channel State Information-reference Signal (CSI-RS), and a process of reporting the CSI to the gNB is a CSI feedback process. The CSI feedback process includes reporting one or more of a Rank Indicator (RI), a PMI, and a Channel Quality Indicator (CQI). The reporting mode can be periodic, semi-continuous, non-periodic and the like. As is conventional for feedback of PMIs: and the UE selects the PMI considered to be suitable by the UE according to the channel state information, and then reports the PMI to the gNB for reference. However, this method has the disadvantage that the PMI selected by the UE is not necessarily appropriate, and may cause inter-UE interference. Another idea is: and the UE directly feeds back the channel information to the gNB, and the gNB selects a proper PMI according to the channel information. However, this method has the disadvantages of full feedback of channel information, too large overhead, and the need for compressed feedback.

Therefore, research on how to feed back the CSI has important practical value for improving communication performance, but the CSI feedback mechanism in the prior art cannot accurately report channel information.

Disclosure of Invention

The technical problem solved by the invention is how to select the network or the network intermediate layer used for generating the CSI feedback information by the UE and report the CSI feedback information according to the network or the network intermediate layer.

In order to solve the above problem, an embodiment of the present invention provides a CSI feedback method, where the method includes: generating CSI feedback information according to the parameters of the CSI feedback information; and reporting the CSI feedback information to network equipment.

Optionally, the method further includes: and reporting the length of the CSI feedback information to the network equipment while reporting the CSI feedback information to the network equipment.

Optionally, the parameters of the CSI feedback information include network indication information, and the generating of the CSI feedback information according to the parameters of the CSI feedback information includes: determining the network indication information; and determining a corresponding network or network intermediate layer according to the network indication information, and generating CSI feedback information according to the determined network or network intermediate layer.

Optionally, the determining the network indication information includes: receiving configuration signaling, wherein the configuration signaling comprises indication information of a network type; and determining the network indication information according to the network type and the CSI.

Optionally, the determining the network indication information includes: determining indication information of the network type according to the number of CSI-RS ports; and determining the network indication information according to the indication information of the network type and the CSI.

Optionally, the determining the network indication information includes: determining indication information of the network type according to the number of CSI-RS ports and the number of receiving antennas; and determining the network indication information according to the indication information of the network type and the CSI.

Optionally, the network indication information is indicated by a network device, and after determining a corresponding network according to the network indication information, the method further includes: selecting an intermediate layer from the determined network according to the CSI; the generating of the CSI feedback information according to the determined network includes: and generating CSI feedback information according to the selected intermediate layer.

Optionally, the CSI feedback information is reported to the network device through a PUCCH or a PUSCH.

The embodiment of the invention also provides a CSI feedback method, which comprises the following steps: and receiving CSI feedback information reported by the terminal, wherein the CSI feedback information is determined by the terminal according to parameters of the CSI feedback information.

Optionally, the terminal reports the length of the CSI feedback information while reporting the CSI feedback information, and the method further includes: and acquiring the length of the CSI feedback information.

Optionally, the CSI feedback information parameter includes network indication information, so that the terminal determines a corresponding network or network intermediate layer according to the network indication information, and generates CSI feedback information according to the determined network or network intermediate layer.

Optionally, before receiving the CSI feedback information reported by the terminal, the method further includes: and sending configuration signaling to the terminal, wherein the configuration signaling comprises indication information of a network type, so that the terminal determines the network indication information according to the network type and CSI.

Optionally, before receiving the CSI feedback information reported by the terminal, the method further includes: and sending the network indication information to a terminal.

Optionally, the CSI feedback information is carried through a PUCCH or a PUSCH.

An embodiment of the present invention further provides a CSI feedback apparatus, where the apparatus includes: the CSI feedback information generation module is used for generating CSI feedback information according to the parameters of the CSI feedback information; and the reporting module is used for reporting the CSI feedback information to network equipment.

An embodiment of the present invention further provides a CSI feedback apparatus, where the apparatus includes: and the CSI feedback information receiving module is used for receiving the CSI feedback information reported by the terminal, and the CSI feedback information is determined by the terminal according to the parameters of the CSI feedback information.

Embodiments of the present invention further provide a storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform any of the steps of the method.

The embodiment of the present invention further provides a terminal, which includes the above apparatus, or includes a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes the steps of the above method when executing the computer program.

The embodiment of the present invention further provides a network device, which includes the above apparatus, or includes a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes the steps of the above method when executing the computer program.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

the embodiment of the invention provides a CSI feedback method, which comprises the following steps: generating CSI feedback information according to the parameters of the CSI feedback information; and reporting the CSI feedback information to network equipment. Compared with the prior art, in the scheme of the embodiment of the invention, the UE can be used for more clearly determining the channel condition and the environment condition, so that the network or the network intermediate layer used for generating the CSI feedback information can be flexibly determined. For example, when the channel condition is good, the UE may report CSI feedback information with a shorter length. Therefore, the UE can flexibly select the network or the network intermediate layer used for generating the CSI feedback information and report the CSI feedback information according to the network or the network intermediate layer.

Furthermore, the network equipment implicitly indicates the indication information of the network type through the number of CSI-RS ports or the number of receiving antennas, so that the indication resources are saved.

Further, the network equipment indicates the determined network, and the UE selects an intermediate layer for generating the CSI feedback information in the determined network according to the CSI.

Drawings

Fig. 1 is a flowchart illustrating a first CSI feedback method according to an embodiment of the present invention;

FIG. 2 is a flowchart illustrating an embodiment of step S101 in FIG. 1;

fig. 3 is a schematic diagram of a CSI feedback method on a UE side according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a CSI feedback method at a base station (gNB) side according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating another CSI feedback method according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a CSI feedback apparatus according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another CSI feedback apparatus according to an embodiment of the present invention.

Detailed Description

As a background, the CSI feedback mechanism in the prior art cannot report channel information very accurately.

In order to solve the above problem, an embodiment of the present invention provides a CSI feedback method, where the method includes: generating CSI feedback information according to the parameters of the CSI feedback information; and reporting the CSI feedback information to network equipment. Therefore, the UE can select a network or a network intermediate layer used for generating the CSI feedback information by itself and report the CSI feedback information according to the network or the network intermediate layer.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1, an embodiment of the present invention provides a flowchart of a CSI feedback method, where the method may be executed by a terminal, where the terminal may be a User Equipment (UE), and the UE is described as an example below.

AI (Artificial Intelligence) is applied more and more widely in the field of communications, and a CSI feedback mechanism based on AI is also being researched more. The process of measuring the received CSI-RS by the UE to obtain CSI feedback information and reporting the CSI feedback information to the network device is referred to as a CSI feedback process. The network device may be an Access Point (AP) or a base station (e.g., a gNB, an eNB, etc.). One or more networks are deployed at the UE side and the network device side, respectively.

The CSI feedback process can be analogized to a compression and recovery process, and the UE side compresses channel information at the CSI-RS position by using a deep learning network (or referred to as a neural network, and hereinafter referred to as a network) to generate CSI feedback information, which can be denoted as CSI-code and reported to the network device. And the network equipment decompresses the CSI feedback information by using the corresponding deep learning network to recover the CSI (channel information on the CSI-RS position). There may be some limitations to the application of the deep learning algorithm to CSI feedback. In order to ensure the accuracy of the CSI feedback process, the UE side needs to be able to determine that the other side can use the correct network to decode the CSI feedback information to recover the channel information.

The CSI feedback method comprises the following steps:

step S101, generating CSI feedback information according to parameters of the CSI feedback information;

and step S102, reporting the CSI feedback information to network equipment.

The parameters of the CSI feedback information are parameters which correspond to the network or the middle layer of the network generating the CSI feedback information one by one. The parameters of the CSI feedback information may include parameters such as length and attribute of the CSI feedback information reported to the network device. And the UE determines the network according to the parameters of the CSI feedback information to generate the CSI feedback information by using the network, and reports the CSI feedback information to the network equipment.

Each network may determine one or more intermediate layers that may be used to generate CSI feedback information, where parameters (such as length of CSI feedback information) of the CSI feedback information generated by each intermediate layer are different. If the network corresponding to the parameter of the CSI feedback information only includes one intermediate layer that can be used to generate the CSI feedback information, the intermediate layer may be directly used to generate the CSI feedback information.

Optionally, the CSI feedback information is reported to the network device through a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH).

In this embodiment, the UE is aware of the channel condition and the environmental condition, and may flexibly determine the network or the network intermediate layer used for generating the CSI feedback information. For example, the channel condition is good, and the UE may report CSI feedback information with a shorter length. Therefore, the UE can flexibly select the network or the network intermediate layer used for generating the CSI feedback information and report the CSI feedback information according to the network or the network intermediate layer.

In one embodiment, the method may further comprise: and reporting the length of the CSI feedback information to the network equipment while reporting the CSI feedback information to the network equipment.

If the UE selects a certain network or an intermediate layer of a certain network to generate the CSI feedback information, the UE reports the length of the CSI feedback information to the network equipment when reporting the CSI feedback information to the network equipment, so that the network equipment can determine a network for decompressing the CSI feedback information reported by the UE according to the length of the CSI feedback information, and decompress the CSI feedback information through the determined network to recover the CSI of the UE.

In an embodiment, the parameter of the CSI feedback information includes network indication information, and fig. 2 shows a specific implementation of step S101 in fig. 1. Specifically, the step S101 of generating CSI feedback information according to the CSI feedback information parameter may include:

step S1011, determining the network indication information;

step S1012, determining a corresponding network or network intermediate layer according to the network indication information, and generating CSI feedback information according to the determined network or network intermediate layer.

The network indication information is information used by the UE to determine a corresponding network or a network middle layer. Alternatively, the network indication information may be an index (index) of the network or an index of the network intermediate layer. Optionally, an index may be set for each network on the UE side and the network device side, and the UE side and the network device side have a consistent understanding of the index of each network. Alternatively, the index of each network or the index of the network middle layer may be configured to the UE by the network device through system broadcast information (such as SIB) or RRC signaling.

The UE may determine the network indication information according to the information configured by the network device (e.g., configured information such as RRC signaling or system broadcast message), or may determine the network indication information in other manners. It should be noted that the network indication information may also be other information capable of determining the corresponding network or network intermediate layer, except for the index of the network or network intermediate layer, and is not described herein again.

For example, the relationship between the index (index) of the network and the length of the generated CSI feedback information is shown in table 1.

TABLE 1

Network Index	CSI feedback information length
		1	5bits
2	10bits
		3	20bits
4	30bits

Alternatively, the relationship between the index (index) of the network intermediate layer and the length of the generated CSI feedback information is as shown in table 2.

TABLE 2

Network middle layer Index	CSI feedback information length
		1	5bits
2	10bits
		3	20bits
4	30bits

In one embodiment, the determining of the network indication information in step S1011 includes: receiving configuration signaling, wherein the configuration signaling comprises indication information of a network type; and determining the network indication information according to the network type and the CSI.

The configuration signaling is signaling sent by the network equipment to the UE, and includes indication information of a network type, where the indication information is used to indicate, for the UE, the network type of the network that generates the CSI feedback information. Optionally, the indication information of the network type may be an index (index) of the network type, the index of each network type may be set, and the network device may carry the index of a certain network type in the configuration signaling to indicate the corresponding network type (e.g., TypeNet) to the UE. Optionally, the configuration signaling is RRC signaling, etc.

The CSI is Channel State Information (CSI) obtained by the UE through channel state measurement. The UE may determine the network indication information according to the network type indicated by the configuration signaling and CSI measured by the UE. For example, if the same network type corresponds to multiple networks, the UE may select a suitable network from the multiple networks corresponding to the network type according to the CSI, and generate CSI feedback information.

In a specific embodiment, the network instructs the UE to report the CSI feedback information through a configuration signaling, where the configuration signaling may be an RRC signaling, and the configuration signaling may be denoted as AIcsi-feedback, and includes information indicating a network type. Specifically, the UE and the network device (e.g., the base station gNB) are respectively deployed with several types of networks, which correspond to different CSI-RS configurations, and the network device directly indicates the network type used by the UE through a configuration signaling.

In one embodiment, the determining of the network indication information in step S1011 includes: determining indication information of the network type according to the number of CSI-RS ports; and determining the network indication information according to the indication information of the network type and the CSI.

Optionally, a configuration indicating the number of CSI-RS ports (nrofPorts) already exists in the existing protocol, and the UE determines the indication information (such as an index of the network type) of the network type according to the configured number of CSI-RS ports, so as to determine the network type. And determining which network or network intermediate layer is selected to generate the CSI feedback information according to the determined network type and the measured CSI. At this time, a first corresponding relation exists between the number of ports of the CSI-RS and the parameter of the indication information of the network type, so that the network equipment can implicitly indicate the network type through the number of ports of the CSI-RS.

In one embodiment, if the preset threshold for the number of CSI-RS ports configured by the network is represented by PortThreshold. And when the number of the CSI-RS ports of the UE is greater than PortThreshold, the UE determines the network type, such as TypeNet, for obtaining the CSI feedback information according to the number of the CSI-RS ports. Each network type comprises a plurality of networks, and different networks are used for acquiring the CSI feedback information with different lengths (the lengths of the networks and the CSI feedback information are shown in the table 1). Further, when the number of CSI-RS ports is equal to or less than PortThreshold, the AI algorithm may not have gain or may be used in a conventional manner.

In another embodiment, if the values of nrofPorts { p1, p2, p4, p8, p12, p16, p24, p32} correspond to indexes of 8 or more network types, for example, indexes of network types corresponding to p1 to p4 are 1, indexes of network types corresponding to p8 values p16 are 2, and indexes of network types corresponding to p24 to p32 are 3.

In one embodiment, the determining of the network indication information in step S1011 includes: determining indication information of the network type according to the number of CSI-RS ports and the number of receiving antennas; and determining the network indication information according to the indication information of the network type and the CSI.

Optionally, there is already a configuration indicating the number of receive antennas in the existing protocol, and the UE determines the indication information of the network type (TypeNet) according to the configured number of CSI-RS ports and the number of receive antennas. And the UE determines the indication information (such as the index of the network type) of the network type according to the number of the CSI-RS ports and the number of the receiving antennas configured by the network, so as to determine the network type. And then determining which network or network intermediate layer is selected to generate CSI feedback information according to the determined network type and the measured CSI.

Further, a second corresponding relationship exists between the combination of the number of ports of the CSI-RS and the number of receiving antennas of the terminal and the parameter of the feedback information, and the second corresponding relationship is used for determining the indication information of the network type according to the number of ports of the CSI-RS and the number of ports of the terminal.

For example, the range division may be performed according to the number of receiving antennas, and ranges from n1 to n2, from n2 to n3, from n3 to n4, and equal to or greater than n4 are obtained, and the values of nrofPorts are { p1, p2, p4, p8, p12, p16, p24, p32 }. The second correspondence may be expressed as:

when nroflorts are p1 to p 4: when the number of the receiving antennas is n 1-n 2, the index of the corresponding network type is 1; when the number of the receiving antennas is n 2-n 3, the index of the corresponding network type is 2; when the number of the receiving antennas is n 3-n 4, the index of the corresponding network type is 3; when the number of the receiving antennas is > n4, the index of the corresponding network type is 4;

when nroflorts are p8 to p 16: when the number of the receiving antennas is n 1-n 2, the index of the corresponding network type is 1; when the number of the receiving antennas is n 2-n 3, the index of the corresponding network type is 2; when the number of the receiving antennas is n 3-n 4, the index of the corresponding network type is 3; when the number of the receiving antennas is > n4, the index of the corresponding network type is 4;

when nroflorts are p24 to p 32: when the number of the receiving antennas is n 1-n 2, the index of the corresponding network type is 1; when the number of the receiving antennas is n 2-n 3, the index of the corresponding network type is 2; when the number of the receiving antennas is n 3-n 4, the index of the corresponding network type is 3; when the number of the receiving antennas is > n4, the index of the corresponding network type is 4;

it should be noted that the second corresponding relationship between the indication information of the network type and the nrofPorts and the number of receiving antennas can be set according to the requirement, including but not limited to the above relationship.

In this embodiment, the network device implicitly indicates the indication information of the network type through the number of CSI-RS ports or the number of receiving antennas, so as to save indication resources.

In an embodiment, the network indication information may be indicated by a network device, and accordingly, after determining a corresponding network according to the network indication information in step S1012 in fig. 2, this embodiment may further include: and selecting the middle layer from the determined network according to the CSI. Further, the generating CSI feedback information according to the determined network at step S1012 may include: and generating CSI feedback information according to the selected intermediate layer.

At this time, the network indication information is directly indicated to the UE by the network device, and after the UE determines the corresponding network, if the network has multiple intermediate layers that can be used for generating CSI feedback information, the UE selects the intermediate layers according to the measured CSI to generate CSI feedback information.

In this embodiment, the network device indicates the determined network, and the UE selects an intermediate layer for generating CSI feedback information in the determined network according to the CSI.

In a specific application, CSI feedback is implemented based on AI, and an application scenario of the embodiment of the present invention is described with an example of a length of CSI feedback information. The CSI feedback process is analogized to a compression and recovery process, and the UE side compresses channel information on the CSI-RS position by using a network to generate CSI feedback information and feeds the CSI feedback information back to the gNB. And the gNB decompresses the CSI feedback information by using the corresponding network to recover the channel information on the CSI-RS position. As shown in fig. 3 and fig. 4, fig. 3 is a schematic diagram of a CSI feedback method on a UE side in an embodiment of the present invention, and fig. 4 is a schematic diagram of a CSI feedback method on a gbb side.

For the UE-side network in fig. 3, a channel matrix (denoted as H) of CSI-RS is Input (Input), and the H is subjected to S301 compression and S303 quantization to obtain CSI feedback information (CSI-coded). Wherein, the step S301 of compressing includes: h is subjected to convolution calculation through a neural network (Conv2D) (i.e., a network referred to herein), and is subjected to full connectivity layer (density) processing to obtain a compression result. Step S303 may be implemented by a Quantizer (Quantizer).

After step S301, the UE side further performs step S302 to decompress the channel matrix H, i.e. Output (Output), of the recovered CSI-RS. The decompression operation in step S302 is opposite to the compression operation in step S301, that is, the compressed result is subjected to inverse processing by the fully connected layer (density) and then to inverse convolution calculation by the neural network (Conv2D), so as to restore the compressed result to the channel matrix H. Wherein, the quantization can be uniform quantization or non-uniform quantization.

For the network on the side of the gNB in fig. 4, CSI feedback information (CSI-decoded) which is received by the base station gNB and from which a quantization error (Dequantizer) is removed is Input (Input), and a channel matrix H of the recovered CSI-RS is Output (Output), where the recovery operation mainly refers to decompressing the CSI feedback information, that is, performing inverse processing on the CSI feedback information from which the quantization error is removed through a full connection layer (Dense), and then performing inverse convolution calculation through the network (Conv 2D). It can be seen that, in this example, the network or network intermediate layer where the UE acquires the CSI feedback information and the network or network intermediate layer where the gNB recovers the channel information are in one-to-one correspondence.

Referring to fig. 5, fig. 5 is a schematic flow chart of another CSI feedback method according to an embodiment of the present invention, where the method includes: step S501, CSI feedback information reported by a terminal is received, and the CSI feedback information is determined by the terminal according to parameters of the CSI feedback information.

Optionally, the CSI feedback information is carried through a PUCCH or a PUSCH.

The CSI feedback method in fig. 5 may be executed on the network device (AP or base station, etc.), and the step S501 may be regarded as execution steps corresponding to the steps S101 to S102 in the embodiments shown in fig. 1 and fig. 2, which are complementary in specific implementation principle and logic. Therefore, the explanation of the terms in this embodiment can refer to the description of the embodiment shown in fig. 1 and fig. 2, and will not be repeated here.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a CSI feedback apparatus according to an embodiment of the present invention, where the CSI feedback apparatus 6 includes: a CSI feedback information generating module 601, configured to generate CSI feedback information according to a parameter of the CSI feedback information; a reporting module 602, configured to report the CSI feedback information to a network device.

For more details on the operation principle and the operation mode of the CSI feedback apparatus 6, reference may be made to fig. 1 and fig. 2 for the description of the CSI feedback method, which is not repeated here.

In a specific implementation, the CSI feedback device 6 may correspond to a Chip having a CSI feedback function in the UE, or correspond to a Chip having a data processing function, such as a System-On-a-Chip (SOC), a baseband Chip, or the like; or the chip module is corresponding to the UE and comprises a chip with a CSI feedback function; or to a chip module having a chip with data processing function, or to a UE.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a CSI feedback apparatus according to an embodiment of the present invention, where the CSI feedback apparatus 7 includes: the CSI feedback information receiving module 701 is configured to receive CSI feedback information reported by a terminal, where the CSI feedback information is determined by the terminal according to parameters of the CSI feedback information.

For more details on the operation principle and the operation mode of the CSI feedback apparatus 7, reference may be made to the description of the CSI feedback method in fig. 5, which is not described herein again.

In a specific implementation, the CSI feedback device 7 may correspond to a Chip having a CSI feedback function in a network device, or correspond to a Chip having a data processing function, such as a System-On-a-Chip (SOC), a baseband Chip, or the like; or the chip module is corresponding to the network equipment and comprises a chip with a CSI feedback function; or to a chip module having a chip with data processing function, or to a network device, such as a base station.

In a specific implementation, each module/unit included in each apparatus and product described in the foregoing embodiments may be a software module/unit, may also be a hardware module/unit, or may also be a part of a software module/unit and a part of a hardware module/unit. For example, for each device or product applied to or integrated into a chip, each module/unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the module/unit may be implemented by a software program running on a processor integrated within the chip, and the rest (if any) part of the module/unit may be implemented by hardware such as a circuit; for each device or product applied to or integrated with the chip module, each module/unit included in the device or product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules/units may be implemented by using a software program running on a processor integrated within the chip module, and the rest (if any) of the modules/units may be implemented by using hardware such as a circuit; for each device and product applied to or integrated in the terminal, each module/unit included in the device and product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented by using a software program running on a processor integrated in the terminal, and the rest (if any) part of the modules/units may be implemented by using hardware such as a circuit.

Embodiments of the present invention also provide a storage medium having a computer program stored thereon, where the computer program is executed by a processor to perform the steps of the method in any one of fig. 1 to 2 or fig. 5. The storage medium may be a computer-readable storage medium, and may include, for example, a non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may further include an optical disc, a mechanical hard disk, a solid state hard disk, and the like.

The embodiment of the invention also provides a terminal, which can be UE. The terminal includes the CSI feedback apparatus 6 shown in fig. 6, or may include a memory and a processor, where the memory stores a computer program operable on the processor, and the processor executes the computer program to perform the steps of the methods shown in fig. 1 to fig. 2.

An embodiment of the present invention further provides a network device, which includes the CSI feedback apparatus 7 shown in fig. 7, or includes a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes the steps of the method shown in fig. 5 when executing the computer program.

Specifically, in the embodiment of the present invention, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory in the embodiments of the subject application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document indicates that the former and latter related objects are in an "or" relationship.

The "plurality" appearing in the embodiments of the present application means two or more.

The descriptions of the first, second, etc. appearing in the embodiments of the present application are only for illustrating and differentiating the objects, and do not represent the order or the particular limitation of the number of the devices in the embodiments of the present application, and do not constitute any limitation to the embodiments of the present application.

The term "connect" in the embodiments of the present application refers to various connection manners, such as direct connection or indirect connection, to implement communication between devices, which is not limited in this embodiment of the present application.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A CSI feedback method, characterized in that the method comprises:

generating CSI feedback information according to the parameters of the CSI feedback information;

and reporting the CSI feedback information to network equipment.

2. The method of claim 1, further comprising:

and reporting the length of the CSI feedback information to the network equipment while reporting the CSI feedback information to the network equipment.

3. The method according to claim 1 or 2, wherein the parameters of the CSI feedback information comprise network indication information, and the generating the CSI feedback information according to the parameters of the CSI feedback information comprises:

determining the network indication information;

and determining a corresponding network or network intermediate layer according to the network indication information, and generating CSI feedback information according to the determined network or network intermediate layer.

4. The method of claim 3, wherein the determining the network indication information comprises:

receiving configuration signaling, wherein the configuration signaling comprises indication information of a network type;

and determining the network indication information according to the network type and the CSI.

5. The method of claim 3, wherein the determining the network indication information comprises:

determining indication information of the network type according to the number of CSI-RS ports;

and determining the network indication information according to the indication information of the network type and the CSI.

6. The method of claim 3, wherein the determining the network indication information comprises:

determining indication information of the network type according to the number of CSI-RS ports and the number of receiving antennas;

7. The method of claim 3, wherein the network indication information is indicated by a network device, and wherein after determining the corresponding network according to the network indication information, the method further comprises:

selecting an intermediate layer from the determined network according to the CSI;

the generating of the CSI feedback information according to the determined network includes:

and generating CSI feedback information according to the selected intermediate layer.

8. The method of claim 1, wherein the CSI feedback information is reported to the network device via a PUCCH or PUSCH.

9. A CSI feedback method, characterized in that the method comprises:

and receiving CSI feedback information reported by the terminal, wherein the CSI feedback information is determined by the terminal according to parameters of the CSI feedback information.

10. The method of claim 9, wherein the terminal reports the length of the CSI feedback information while reporting the CSI feedback information, and wherein the method further comprises:

and acquiring the length of the CSI feedback information.

11. The method according to claim 9 or 10, wherein the parameter of the CSI feedback information includes network indication information, so that the terminal determines a corresponding network or network intermediate layer according to the network indication information and generates CSI feedback information according to the determined network or network intermediate layer.

12. The method of claim 11, wherein before receiving the CSI feedback information reported by the terminal, the method further comprises:

and sending configuration signaling to the terminal, wherein the configuration signaling comprises indication information of a network type, so that the terminal determines the network indication information according to the network type and CSI.

13. The method of claim 11, wherein before receiving the CSI feedback information reported by the terminal, the method further comprises:

and sending the network indication information to a terminal.

14. The method of claim 9, wherein the CSI feedback information is carried on PUCCH or PUSCH.

15. A CSI feedback apparatus, wherein the apparatus comprises:

the CSI feedback information generation module is used for generating CSI feedback information according to the parameters of the CSI feedback information;

and the reporting module is used for reporting the CSI feedback information to network equipment.

16. A CSI feedback apparatus, wherein the apparatus comprises:

and the CSI feedback information receiving module is used for receiving the CSI feedback information reported by the terminal, and the CSI feedback information is determined by the terminal according to the parameters of the CSI feedback information.

17. A storage medium having a computer program stored thereon, the computer program, when executed by a processor, performing the method of any of claims 1 to 8, or the steps of the method of any of claims 9 to 14.

18. A terminal comprising an apparatus as claimed in claim 15, or comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of any of claims 1 to 8.

19. A network device comprising the apparatus of claim 16 or comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of any of claims 9 to 14.