CN115941137A

CN115941137A - CSI reporting method, receiving method, device, terminal and network side equipment

Info

Publication number: CN115941137A
Application number: CN202110909081.7A
Authority: CN
Inventors: 任千尧; 宋扬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2023-04-07
Also published as: WO2023016339A1

Abstract

The application provides a CSI reporting method, a CSI receiving device, a terminal and network side equipment. The CSI reporting method of the embodiment of the application comprises the following steps: the terminal determines a first quantity of target variables according to the channel condition, wherein the first quantity is not more than a second quantity of the target variables indicated by a network side; and the terminal reports CSI, wherein the number of the target variables corresponding to the CSI is the first number.

Description

CSI reporting method, receiving method, device, terminal and network side equipment

Technical Field

The present application belongs to the field of communications technologies, and in particular, to a method, a device, a terminal, and a network side device for reporting Channel State Information (CSI).

Background

The CSI may be used for the signal transmitting terminal to optimize the transmission of the signal so that the signal transmitted by the signal transmitting terminal more matches the state of the channel. At present, for CSI reporting, a network side configures the number of variables to a terminal before the terminal reports CSI, and the number of variables corresponding to CSI reported by the terminal is the number configured by the network side. For example: and the network side configures the number L of the beams, and the terminal reports CSI corresponding to the L beams. Therefore, the terminal reports the CSI with poor flexibility because the variables corresponding to the CSI reported by the terminal are always the quantity configured by the network side.

Disclosure of Invention

The embodiment of the application provides a CSI reporting method, a CSI receiving method, a device, a terminal and network side equipment, so as to solve the problem of poor flexibility of reporting CSI by the terminal.

In a first aspect, a CSI reporting method is provided, including:

the terminal determines a first quantity of target variables according to the channel condition, wherein the first quantity is not greater than a second quantity of the target variables indicated by a network side;

and the terminal reports CSI, and the number of the target variables corresponding to the CSI is the first number.

In a second aspect, a CSI receiving method is provided, including:

the method comprises the steps that network side equipment receives CSI, the number of target variables corresponding to the CSI is a first number, and the first number is not larger than a second number of the target variables indicated by the network side.

In a third aspect, an apparatus for reporting CSI is provided, including:

a determining module, configured to determine a first number of target variables according to a channel condition, where the first number is not greater than a second number of the target variables indicated by a network side;

and the reporting module is used for reporting CSI, and the number of the target variables corresponding to the CSI is the first number.

In a fourth aspect, a CSI receiving apparatus is provided, including:

the receiving module is used for receiving CSI, the number of target variables corresponding to the CSI is a first number, and the first number is not greater than a second number of the target variables indicated by a network side.

In a fifth aspect, a terminal is provided, which includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, where the program or the instruction, when executed by the processor, implements the steps of the CSI reporting method provided in the embodiment of the present application.

In a sixth aspect, a terminal is provided, which includes a processor and a communication interface, where the communication interface is configured to: determining a first quantity of target variables according to a channel condition, wherein the first quantity is not larger than a second quantity of the target variables indicated by a network side; and the terminal reports CSI, wherein the number of the target variables corresponding to the CSI is the first number.

In a seventh aspect, a network-side device is provided, which includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, where the program or the instruction, when executed by the processor, implements the steps of the CSI receiving method provided in the embodiment of the present application.

In an eighth aspect, a network-side device is provided, which includes a processor and a communication interface, where the communication interface is configured to: and receiving CSI, wherein the number of target variables corresponding to the CSI is a first number, and the first number is not more than a second number of the target variables indicated by a network side.

A ninth aspect provides a readable storage medium, where a program or an instruction is stored, and the program or the instruction when executed by the processor implements the steps of the CSI reporting method provided in the embodiment of the present application, or the program or the instruction when executed by the processor implements the steps of the CSI receiving method provided in the embodiment of the present application.

In a tenth aspect, a computer program/program product is provided, which is stored in a non-volatile storage medium and is executed by at least one processor to implement the steps of the CSI reporting method provided in the embodiments of the present application, or is executed by at least one processor to implement the steps of the CSI receiving method provided in the embodiments of the present application.

In the embodiment of the application, a terminal determines a first quantity of target variables according to a channel condition, wherein the first quantity is not more than a second quantity of the target variables indicated by a network side; and the terminal reports CSI, wherein the number of the target variables corresponding to the CSI is the first number. Therefore, the number of the target variables is determined according to the channel condition, so that the flexibility of reporting the CSI by the terminal is improved.

Drawings

FIG. 1 illustrates a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a flowchart of a CSI reporting method according to an embodiment of the present application;

fig. 3 is a flowchart of a CSI receiving method according to an embodiment of the present application;

fig. 4 is a structural diagram of a CSI reporting apparatus according to an embodiment of the present application;

fig. 5 is a structural diagram of a CSI receiving apparatus according to an embodiment of the present application;

fig. 6 is a block diagram of a communication device according to an embodiment of the present application;

fig. 7 is a block diagram of a terminal according to an embodiment of the present disclosure;

fig. 8 is a block diagram of a network side device according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in other sequences than those illustrated or otherwise described herein, and that the terms "first" and "second" used herein are generally intended to distinguish one object from another, and not necessarily to limit the number of objects, e.g., the first object may be one or more than one object. In addition, "and/or" in the specification and claims means at least one of connected objects, and a character "/" generally indicates a relationship in which a front and rear related objects are an "or".

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE-Advanced (LTE-a) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for purposes of example, and using NR terminology in much of the description below, these techniques may also be applied to applications other than NR system applications, such as 6th generation (6 g) communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12.

Wherein, the terminal 11 may also be called a terminal Device or a User terminal (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (week Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), an intelligent home Device (home Device with wireless communication function, such as a refrigerator, a television, a washing machine or furniture, etc.), and the Wearable Device includes: smart watch, smart bracelet, smart headset, smart glasses, smart headwear (smart bracelet, smart ring, smart necklace, smart anklet, etc.), smart wristband, smart garment, game console, and so on. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11.

The network-side device 12 may be a core network element or a base station, where the core network element may be an Access and Mobility Management Function (AMF), a Mobility Management Entity (MME), and the like. The Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access Point, a WiFi node, a Transmission Receiving Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but the specific type of the Base Station is not limited.

A message processing method, an apparatus, a device, and a storage medium provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings by some embodiments and application scenarios thereof.

Referring to fig. 2, fig. 2 is a flowchart of a CSI reporting method according to an embodiment of the present application, and as shown in fig. 2, the method includes the following steps:

step 201, the terminal determines a first number of target variables according to the channel condition, wherein the first number is not greater than a second number of the target variables indicated by the network side.

The target variable may be one or more variables related to CSI reporting, for example: beam, delay path, tap, etc., as described in more detail below.

When the target variable is a plurality of variables, the first number of different variables may be different, but not greater than the number indicated on the network side.

The second number of the target variables indicated by the network side may be configured by the network side through a high-level parameter, and may be configured dynamically or in advance, which is not limited in this disclosure.

For example: the variable quantity of the network-side indication beam is L, then step 201 can determine the first quantity of the beam to be L according to the channel condition ₀ Wherein L is ₀ Not greater than L; another example is: the number of the variable of the network side indicating tap is M _v Then step 201 may determine the first number of taps to be M according to the channel condition ₀ Wherein M is ₀ Not more than M _v 。

The channel conditions described above may be actual channel conditions, such as: and measuring information of beam and delay path.

The first number is not greater than the second number of the target variable indicated by the network side, and it is understood that in some channel cases, the first number may be smaller than the second number of the target variable indicated by the network side, and in other channel cases, the first number may be equal to the second number of the target variable indicated by the network side.

Step S201 may be understood as determining a first number of target variables according to the channel condition. For example: step S201 includes: determining L based on channel conditions ₀ A plurality of beams, wherein the network side indicates L beams, L ₀ Not more than L; determining M based on channel conditions ₀ A tap, wherein the network side indicates M _v A tap, M ₀ Not more than M _v 。

Step 202, the terminal reports CSI, where the number of the target variables corresponding to the CSI is the first number.

The number of the target variables corresponding to the CSI may be the first number, and reporting the CSI according to the first number of the target variables, that is, generating and reporting the CSI based on the first number of the target variables.

In the embodiment of the application, the following steps can be realized: the number of the target variables corresponding to the CSI is the first number, instead of directly reporting the CSI corresponding to the number of the network side indication (or referred to as configuration), so that the flexibility of reporting the CSI by the terminal can be improved, that is, the CSI can be flexibly reported according to the channel condition.

In addition, because the number of the target variables corresponding to the reported CSI is the first number, compared with the number that the variables corresponding to the CSI reported by the terminal are always indicated by the network side, the number of the variables corresponding to part or all of the CSI can be reduced by the embodiment of the application, so that the overall cost of reporting the CSI by the terminal can be reduced. For example, the following examples: for some invalid or inefficient beams, delay paths or taps, the embodiments of the present application may reduce the information reporting of the beams, delay paths or taps, that is, reduce the number of beams, delay paths or taps, thereby reducing CSI overhead and avoiding redundant and invalid information reporting.

As an alternative embodiment, the target variable includes at least one of:

a first variable and a second variable;

the first variable includes at least one of:

a beam (beam), a beam pair (beam pair), an orthogonal beam pair, a spatial domain frequency domain pair (SD-FD pair), an antenna port, a CSI reference signal antenna port (CSI-RS port);

the second variable includes at least one of:

delay paths and taps.

When the target variables comprise a plurality of items of beams, beam pairs, orthogonal beam pairs, SD-FD pairs, antenna ports, CSI reference signal antenna ports, time delay paths and taps, each item corresponds to a first number, and the first number corresponding to each item is not more than a second number of the item indicated by the network side.

In this embodiment, it may be achieved that a first number of at least one of the beams, the beam pairs, the orthogonal beam pairs, the SD-FD pair, the antenna ports, the CSI reference signal antenna ports, the delay paths, and the taps is not greater than a corresponding second number indicated by the network side, so that an overall overhead of reporting the CSI by the terminal may be reduced.

As an optional implementation, the CSI includes: a non-zero coefficient, the number of non-zero coefficients being determined based on the first number of target variables.

Wherein the non-zero coefficient may be a non-zero coefficient selected according to the first number of the target variables.

This embodiment may implement: the number of the non-zero coefficients included in the CSI is determined based on the first number of the target variables, and the first number of the target variables is determined according to the channel condition, so that the non-zero coefficients can be flexibly reported according to the channel condition, and the overall cost of reporting the CSI by the terminal is reduced.

Optionally, the number of the nonzero coefficients included in the CSI is not greater than the number of nonzero coefficients indicated by the network side.

In this embodiment, when selecting the non-zero coefficients, the number of selections may be no greater than the number of network-side indications, such as in some scenarios the number of selections may be less than the number of network-side indications, or in some scenarios the number of selections may be equal to the number of network-side indications.

In the embodiment, the number of the nonzero coefficients can be flexibly reported according to the channel condition, so that the overall cost of reporting the CSI by the terminal is reduced.

Optionally, the CSI further includes location information of the non-zero coefficient.

The position information may be represented by a bitmap (bitmap), and the length of the bitmap is determined based on the first number of the target variables.

The bitmap may be a length of a non-zero coefficient bitmap corresponding to each layer (layer) determined by the terminal according to the number of the selected target variables. For example: and the terminal determines the length of the non-zero coefficient bitmap corresponding to each layer according to the number of the actually selected beams and delay paths.

In addition, the number of non-zero coefficients included in the CSI may not be greater than the number of non-zero coefficients corresponding to the bitmap length.

In the embodiment, the length of the bitmap is determined based on the first quantity of the target variable, so that the length of the bitmap is not larger than the length of the bitmap determined according to the second quantity indicated by the network side, and the length of the bitmap can be reduced in some scenes, so that the overall cost of reporting the CSI by the terminal is further reduced.

As an optional implementation, the method further comprises:

selecting the first number of target variables from a plurality of first variables, and executing a quantization result generation operation based on the first number of target variables to obtain a quantization result;

selecting the non-zero coefficient based on the quantization result.

The quantization result generation operation may be an operation defined in a protocol to obtain a quantization result when a non-zero coefficient is selected. For example: the quantization result generation operation includes:

pre-coding matrix calculation, coefficient selection, coefficient compression and quantization.

For example, the terminal performs precoding matrix calculation, coefficient selection, coefficient compression, and quantization according to the number of selected beams and the number of delay paths, so as to obtain the quantization result.

In this embodiment, since the first number is selected according to the channel condition, the quantization result can be obtained according to the channel condition, so that the finally selected non-zero coefficient is also selected according to the channel condition, thereby improving the flexibility of reporting the non-zero coefficient and reducing the overall cost of reporting the CSI by the terminal.

As an optional embodiment, the CSI explicitly indicates a first number of the target variable; or

Implicitly indicating in the CSI a first number of the target variables.

The first number of the target variable implicitly indicated may be implicitly indicated by a combination number or implicitly indicated by a content such as a position of a nonzero coefficient, which is not limited herein.

In this embodiment, since the first number of the target variable is explicitly or implicitly indicated, the network side device may analyze the number of the target variable actually selected by the terminal according to the reported CSI, thereby quickly analyzing the channel state information.

Optionally, the CSI includes a combination number corresponding to the first number of the target variable, and the combination number is used to implicitly indicate the first number of the target variable.

The combined number may be a result of calculating the first number of the target variables and the second number indicated by the network side.

In this embodiment, since the first number of target variables is implicitly indicated by the number of combinations corresponding to the first number of target variables, CSI overhead can be further reduced.

For example: the terminal may report the position of the selected beam by a combination number manner, and only reports the combination number corresponding to the actually selected first number, or reports the position of the selected delay path by the combination number, or reports the position of the selected non-zero coefficient by the bitmap, where the network side device allows the number reported by the terminal to be less than the number indicated by the network side, and the coefficient not reported may be processed according to a reserved value, such as 0.

As an optional implementation, the channel condition includes at least one of:

metric information of a plurality of beams;

metric information of a plurality of delay paths.

The plurality of beams may be all beams or partial beams, and the plurality of delay paths may be all delay paths or partial delay paths.

Wherein the metric information includes at least one of: power values and concentration values.

By the metric information, an effective target effect, such as an effective beam or a delay path, can be selected, so that for a scenario in which the number of effective target variables is less than the second number indicated by the network side, it can be determined that the first number of target variables is less than the second number, and for a scenario in which the number of effective target variables is equal to or greater than the second number indicated by the network side, it can be determined that the first number of target variables is equal to the second number.

In this embodiment, selecting the first number of target variables according to the actual metric information may be implemented, thereby advantageously reducing CSI overhead, for example: reporting of information about invalid or inefficient target variables, where inefficiency may be protocol definition or network side configuration inefficiency, is avoided.

In the embodiment of the application, a terminal determines a first quantity of target variables according to a channel condition, wherein the first quantity is not more than a second quantity of the target variables indicated by a network side; and the terminal reports CSI, wherein the number of the target variables corresponding to the CSI is the first number. Therefore, the number of the target variables is determined according to the channel condition, so that the flexibility of reporting the CSI by the terminal can be improved.

Referring to fig. 3, fig. 3 is a flowchart of a CSI receiving method according to an embodiment of the present application, and as shown in fig. 3, the method includes the following steps:

step 301, a network side device receives CSI, where the number of target variables corresponding to the CSI is a first number, and the first number is not greater than a second number of the target variables indicated by the network side.

Optionally, the target variable includes at least one of:

a first variable and a second variable;

the first variable comprises at least one of:

a beam, a beam pair, an orthogonal beam pair, a space-frequency orthogonal basis SD-FD pair, an antenna port, a CSI reference signal antenna port;

the second variable includes at least one of:

delay paths and taps.

Optionally, the CSI includes: a number of non-zero coefficients determined based on the first number of target variables.

Optionally, the CSI further includes location information of the nonzero coefficient.

Optionally, the position information is represented by a bitmap, and a length of the bitmap is determined based on the first number of the target variables.

Optionally, the CSI explicitly indicates a first number of the target variable; or

Implicitly indicating in the CSI a first number of the target variables.

It should be noted that, this embodiment is used as an implementation of the network side device corresponding to the embodiment shown in fig. 2, and for a specific implementation of this embodiment, reference may be made to the relevant description of the embodiment shown in fig. 2, so as to avoid repeated description, and this embodiment is not described again.

The method provided in the examples of the present application is illustrated below by three examples:

example one

In this embodiment, the target variable includes a beam for example, which may specifically be as follows:

the network side calculates a Channel precoding matrix according to an uplink Sounding Reference Signal (SRS) Channel, precodes a Channel State Information Reference Signal (CSI-RS) and sends the precoded Signal to the terminal.

The network side configures the number of L through the number of high-layer parameter beams (numberOfbeams), or configures L, M through the high-layer parameters _v β, where L is the second number of beams indicated by the network side, M _v For the second number of taps indicated on the network side, β is a real number from 0 to 1.

The terminal obtains a plurality of equivalent beams after processing the received CSI-RS channel by methods such as Singular Value Decomposition (SVD) or Discrete Fourier Transform (DFT), and the terminal selects L from the beams according to the channel condition ₀ An effective beamWherein L is ₀ <L。

The terminal intercepts this L ₀ Obtaining equivalent channel from the channel corresponding to the effective wave beam, and calculating N ₃ Pre-coding matrix of each sub-band, then performing Inverse Discrete Fourier Transform (DFT) IDFT on the frequency domain coefficient to convert the frequency domain coefficient to a time domain to obtain a coefficient of the time domain, wherein N is N ₃ Is the number of subbands.

The terminal selects the strongest M in the time domain coefficients _v For L, performing coefficient compression ₀ A beam, each beam reporting M _v A coefficient with a length of 2L after all coefficients are quantized ₀ *M _v Or L ₀ *N ₃ The bitmap of (a) indicates the position of the non-zero coefficient.

Example two

In this embodiment, the target variable includes a tap for example, which may specifically be as follows:

the network side configures the reporting number M of the time domain taps through high-level parameters or related parameters _v 。

The terminal selects ports according to the received CSI-RS channel to obtain a CSI coefficient of a frequency domain, and after IDFT conversion is carried out on the CSI coefficient, the terminal finds that time domain power is concentrated on M ₀ On diameter, and M ₀ <M _v Then the terminal is only at N ₃ Selecting M of the taps ₀ Reporting the taps, and selecting K0= beta 2X L M according to the quantized coefficients ₀ Reporting the nonzero coefficients by the length of 2 × L × M ₀ The bitmap of (c) indicates the positions of the K0 non-zero coefficients.

Corresponding to some codebooks, the terminal reports M ₀ At the position of each diameter, the number of combinations that can be used is N ₃ And M ₀ The result of the calculation is either 2M _v And M ₀ Result of calculation, and N ₃ When the length is more than 19, the length of the window reported by the terminal is M indicated by the base station _v Twice of (2M) _v 。

After receiving the CSI information fed back by the terminal, the base station according to the information i in the CSI _1,5 Determining a starting position M of a window _initial Then according to the information i in the CSI _1,6 And determining the number of the delay paths selected by the terminal and the position of the delay paths. And then calculating to obtain the actual bitmap length, and acquiring data at the corresponding position according to the bitmap length.

Example three:

in this embodiment, the target variables including the port and the delay path are exemplified, and specifically the following may be used:

the terminal determines the network side configuration (L, p) according to the high-level parameter paramCombination configured by the network side equipment _v Beta), thereby determining the reported number of wave beams 2*L, and calculating the reported number M of delay paths in each layer _v Wherein M is _v ＝p _v *N ₃ R represents the number of subband precoding matrix indicators (PMI subbands) in each subband signal quality indicator (CQI subband), and the number of nonzero coefficients K0=2 × L × M of each layer is calculated _v And the total non-zero coefficient reports 2 × k0.

The terminal receives the CSI-RS and carries out channel estimation to obtain N ₃ Channel estimation results H1, H2 … HN of sub-bands ₃ . The CSI-RS herein may be either non-precoded or precoded.

For some codebooks, the terminal selects proper orthogonal beams according to the received broadband channel, and if the terminal finds that the number of proper orthogonal beams is less than L, only the practical proper number L is selected ₀ By suitable beam is meant N ₃ The projection of the sub-band channels on these beams is relatively large, and is greater than a threshold set by a terminal.

For other codebooks, the terminal selects a proper port, and for a part of codebooks, the terminal selects the length L ₀ For another part of codebook, the terminal selects the appropriate L ₀ And each port reports the position and the number of the ports through the combined number.

After the orthogonal basis is selected, or after the CSI-RS port is selected, or after the precoded CSI-RS port (namely, the space-frequency orthogonal basis) is selected, the terminal obtains an equivalent channel according to the selected space-frequency orthogonal basis or port calculation, and the result of each sub-band projected on the space-frequency orthogonal basis or the channel of each sub-band on the selected port.

The terminal selects the delay path according to the equivalent channel after the port selection, namely N ₃ The sub-band channel is processed by IDFT to obtain N ₃ Calculating the channel capacity of each channel according to the channels with different delay paths, and selecting M with larger channel capacity _v Delay path if the terminal finds M ₀ <M _v The channel capacity of one delay path is relatively large, and the channel capacity corresponding to other delay paths is obviously reduced, so that the terminal only uses M0 delay paths.

Terminal reports selected M ₀ Delay path if N ₃ Greater than 19, it is 2*M _v In the window of (1) to select M ₀ Each path reports the corresponding combination number, if N ₃ Less than or equal to 19, then in N ₃ Middle selection of M ₀ And reporting the corresponding combination number by each time delay path.

And the terminal calculates the coefficients of each port and each time delay path, and quantizes the coefficients to obtain the finally reported coefficients.

The terminal determines that the total number of the nonzero coefficients of all the layers is not more than 2K0 according to the 2K0 indicated by the base station, each layer reports, and the terminal calculates K1=2*L ₀ *M ₀ * Beta, obtaining the maximum number of nonzero coefficients to be reported by each layer, and passing through the channel with the length of 2*L ₀ *M ₀ The bitmap of (2) feeds back the position and number of the non-zero coefficients.

The network side receives the CSI information fed back by the terminal and analyzes the L ₀ And M ₀ The length of the bitmap is determined, then the bitmap is analyzed according to the corresponding length, and the position and the number of the nonzero coefficients are determined, so that the precoding construction is completed.

Referring to fig. 4, fig. 4 is a structural diagram of a CSI reporting apparatus according to an embodiment of the present application, as shown in fig. 4, including:

a determining module 401, configured to determine a first number of target variables according to a channel condition, where the first number is not greater than a second number of the target variables indicated by a network side;

a reporting module 402, configured to report CSI, where the number of the target variable corresponding to the CSI is the first number.

Optionally, the target variable includes at least one of:

a first variable and a second variable;

the first variable comprises at least one of:

the second variable includes at least one of:

delay paths and taps.

Optionally, the apparatus further comprises:

a generating module, configured to select the first number of target variables from a plurality of first variables, and perform a quantization result generating operation based on the first number of target variables to obtain a quantization result;

a selection module for selecting the non-zero coefficient based on the quantization result.

Optionally, the quantization result generating operation includes:

Implicitly indicating in the CSI a first number of the target variables.

Optionally, the CSI includes a combined number corresponding to the first number of the target variable, and the combined number is used to implicitly indicate the first number of the target variable.

Optionally, the channel condition includes at least one of:

metric information for a plurality of beams;

metric information of a plurality of delay paths.

Optionally, the metric information includes at least one of:

power values and concentration values.

The CSI reporting apparatus in the embodiment of the present application may be an apparatus, an apparatus with an operating system, or an electronic device, and may also be a component, an integrated circuit, or a chip in a terminal. The device or the electronic equipment can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may include, but is not limited to, the type of the terminal 11 listed above, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a television (television), a teller machine (teller machine), a self-service machine (kiosk), or the like, and the embodiments of the present application are not limited in particular.

The signal detection device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 2, and achieve the same technical effect, and is not described here again to avoid repetition.

Referring to fig. 5, fig. 5 is a structural diagram of a CSI receiving apparatus according to an embodiment of the present application, as shown in fig. 5, including:

a receiving module 501, configured to receive CSI, where the number of target variables corresponding to the CSI is a first number, and the first number is not greater than a second number of the target variables indicated by a network side.

Optionally, the target variable includes at least one of:

a first variable and a second variable;

the first variable includes at least one of:

the second variable comprises at least one of:

delay paths and taps.

Optionally, the number of the non-zero coefficients included in the CSI is not greater than the number of non-zero coefficients indicated by the network side.

Optionally, the position information is represented by a bitmap, and the length of the bitmap is determined based on the first number of the target variables.

Implicitly indicating in the CSI a first number of the target variables.

The CSI receiving apparatus in the embodiment of the present application may be an apparatus, an apparatus or an electronic device having an operating system, or may be a component, an integrated circuit, or a chip in a network side device. The device or network side equipment may be a base station.

The signal detection device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 3, and achieve the same technical effect, and is not described here again to avoid repetition.

Optionally, as shown in fig. 6, an embodiment of the present application further provides a communication device 600, which includes a processor 601, a memory 602, and a program or an instruction stored on the memory 602 and executable on the processor 601, for example, when the communication device 600 is a network side device, the program or the instruction is executed by the processor 601 to implement the processes of the CSI receiving method embodiment on the network side device, and the same technical effect can be achieved. When the communication device 600 is a terminal, the program or the instruction is executed by the processor 601 to implement each process of the above-described CSI reporting method embodiment on the terminal side, and the same technical effect can be achieved, and for avoiding repetition, the details are not described here again. The communication device is a terminal or a network side device.

An embodiment of the present application further provides a communication device, including a processor and a communication interface, where the communication interface is configured to: determining a first number of target variables according to a channel condition, wherein the first number is not greater than a second number of the target variables indicated by a network side; and the terminal reports CSI, and the number of the target variables corresponding to the CSI is the first number.

Or, the communication interface is configured to: and receiving CSI, wherein the number of target variables corresponding to the CSI is a first number, and the first number is not more than a second number of the target variables indicated by a network side.

The embodiment of the communication device corresponds to the embodiment of the method shown in fig. 2 and fig. 3, and all implementation procedures and implementation manners of the embodiment of the method can be applied to the embodiment of the communication device, and the same technical effects can be achieved.

Specifically, fig. 7 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application.

The terminal 700 includes, but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, and the like.

Those skilled in the art will appreciate that the terminal 700 may further include a power supply (e.g., a battery) for supplying power to the various components, and the power supply may be logically connected to the processor 710 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The terminal structure shown in fig. 2 does not constitute a limitation of the communication device, and the terminal may include more or less components than those shown, or may combine some components, or may arrange different components, which are not described in detail herein.

It should be understood that, in the embodiment of the present application, the input Unit 704 may include a Graphics Processing Unit (GPU) 7041 and a microphone 7042, and the Graphics processor 7041 processes image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts of a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In this embodiment, the radio frequency unit 701 receives downlink data from a network side device and then processes the downlink data to the processor 710; in addition, the uplink data is sent to the network side equipment. In general, radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 709 may be used to store software programs or instructions as well as various data. The memory 709 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. In addition, the Memory 709 may include a high-speed random access Memory and a nonvolatile Memory, where 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. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 710 may include one or more processing units; alternatively, processor 710 may integrate an application processor that handles primarily the operating system, user interface, and application programs or instructions, etc. and a modem processor that handles primarily wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 710.

The radio frequency unit 701 or the processor 710 is configured to determine a first number of target variables according to a channel condition, where the first number is not greater than a second number of the target variables indicated by a network side;

the radio frequency unit 701 reports CSI, where the number of the target variables corresponding to the CSI is the first number.

Optionally, the target variable includes at least one of:

a first variable and a second variable;

the first variable includes at least one of:

the second variable comprises at least one of:

delay paths and taps.

Optionally, the radio frequency unit 701 or the processor 710 is further configured to:

selecting the non-zero coefficient based on the quantization result.

Optionally, the operation of generating the quantization result includes:

Optionally, the CSI explicitly indicates a first number of the target variables; or

Implicitly indicating in the CSI a first number of the target variables.

Optionally, the channel condition includes at least one of:

metric information for a plurality of beams;

measurement information of a plurality of delay paths.

Optionally, the metric information includes at least one of:

power values and concentration values.

Specifically, the terminal according to the embodiment of the present invention further includes: the instructions or programs stored in the memory 709 and executable on the processor 710, the processor 710 calls the instructions or programs in the memory 709 to execute the method executed by the modules shown in fig. 4, and achieve the same technical effect, and are not repeated here to avoid redundancy.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 8, the network-side device 800 includes: antenna 801, radio frequency device 802, baseband device 803. The antenna 801 is connected to a radio frequency device 802. In the uplink direction, the rf device 802 receives information via the antenna 801 and sends the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes information to be transmitted and transmits the information to the radio frequency device 802, and the radio frequency device 802 processes the received information and transmits the processed information through the antenna 801.

The above band processing apparatus may be located in the baseband apparatus 803, and the method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 803, where the baseband apparatus 803 includes a processor 804 and a memory 805.

The baseband device 803 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 8, where one of the chips is, for example, the processor 804, and is connected to the memory 805 to call up a program in the memory 805 to execute the network device operations shown in the above method embodiments.

The baseband device 803 may further include a network interface 806, such as a Common Public Radio Interface (CPRI), for exchanging information with the radio frequency device 802.

The radio frequency device 802 is configured to receive CSI, where a number of target variables corresponding to the CSI is a first number, and the first number is not greater than a second number of the target variables indicated by a network side.

Optionally, the target variable includes at least one of:

a first variable and a second variable;

the first variable includes at least one of:

the second variable includes at least one of:

delay paths and taps.

Implicitly indicating in the CSI a first number of the target variables.

Optionally, the CSI includes a group corresponding to the first number of the target variable

Specifically, the network side device of the embodiment of the present invention further includes: the instructions or programs stored in the memory 805 and capable of being executed on the processor 804, and the processor 804 calls the instructions or programs in the memory 805 to execute the methods executed by the modules shown in fig. 5, and achieve the same technical effects, which are not described herein for avoiding repetition.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and the program or the instruction, when executed by the processor, implements the steps of the CSI reporting method provided in the embodiment of the present application, or the program or the instruction, when executed by the processor, implements the steps of the CSI receiving method on the terminal side provided in the embodiment of the present application.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement each process of the above CSI reporting method or CSI receiving method embodiment, and the same technical effect can be achieved, and in order to avoid repetition, the details are not repeated here.

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

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order, depending on the functionality involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the above embodiment method can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk), and including instructions for enabling a terminal (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the scope of the invention as defined by the appended claims.

Claims

1. A method for reporting Channel State Information (CSI), comprising:

the terminal determines a first quantity of target variables according to the channel condition, wherein the first quantity is not more than a second quantity of the target variables indicated by a network side;

and the terminal reports CSI, wherein the number of the target variables corresponding to the CSI is the first number.

2. The method of claim 1, wherein the target variable comprises at least one of:

a first variable and a second variable;

the first variable comprises at least one of:

the second variable comprises at least one of:

delay paths and taps.

3. The method of claim 1, wherein the CSI comprises: a number of non-zero coefficients determined based on the first number of target variables.

4. The method of claim 3, wherein the CSI includes a number of the non-zero coefficients that is not greater than a network-side indicated number of non-zero coefficients.

5. The method of claim 3, wherein the CSI further includes location information of the non-zero coefficients.

6. The method of claim 5, wherein said position information is represented by a bitmap, the length of which is determined based on said first number of target variables.

7. The method of claim 3, further comprising:

selecting the non-zero coefficient based on the quantization result.

8. The method of claim 7, wherein the quantization result generation operation comprises:

9. The method of claim 1, wherein the first number of the target variable is explicitly indicated in the CSI; or

Implicitly indicating in the CSI a first number of the target variables.

10. The method of claim 9, wherein the CSI comprises a number of combinations corresponding to the first number of the target variables, the number of combinations being used to implicitly indicate the first number of the target variables.

11. The method of claim 1, wherein the channel conditions comprise at least one of:

metric information for a plurality of beams;

metric information of a plurality of delay paths.

12. The method of claim 11, wherein the metric information comprises at least one of:

power values and concentration values.

13. A CSI receiving method, comprising:

14. The method of claim 13, wherein the target variable comprises at least one of:

a first variable and a second variable;

the first variable comprises at least one of:

the second variable includes at least one of:

delay paths and taps.

15. The method of claim 13, wherein the CSI comprises: a number of non-zero coefficients determined based on the first number of target variables.

16. The method of claim 15, wherein the CSI comprises a number of the non-zero coefficients that is no greater than a network-side indicated number of non-zero coefficients.

17. The method of claim 15, wherein the CSI further comprises location information for the non-zero coefficients.

18. The method of claim 17, wherein the position information is represented by a bitmap, a length of which is determined based on the first number of target variables.

19. The method of claim 13, wherein the first number of the target variable is explicitly indicated in the CSI; or alternatively

Implicitly indicating in the CSI a first number of the target variables.

20. The method of claim 19, wherein the CSI comprises a number of combinations corresponding to the first number of the target variables, the number of combinations being used to implicitly indicate the first number of the target variables.

21. A device for reporting CSI (channel State information), comprising:

22. The apparatus of claim 21, wherein the target variable comprises at least one of:

a first variable and a second variable;

the first variable includes at least one of:

the second variable includes at least one of:

a delay path and a tap.

23. A CSI receiving apparatus, comprising:

24. The apparatus of claim 13, wherein the target variable comprises at least one of:

a first variable and a second variable;

the first variable comprises at least one of:

the second variable includes at least one of:

delay paths and taps.

25. A terminal, comprising: memory, processor and program or instructions stored on the memory and executable on the processor, which when executed by the processor implement the steps in the CSI reporting method according to any of claims 1 to 12.

26. A network-side device, comprising: memory, processor and program or instructions stored on the memory and executable on the processor, which when executed by the processor implement the steps in the CSI receiving method according to any of claims 13 to 20.

27. A readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps in the CSI reporting method according to any one of claims 1 to 12, or which when executed by a processor implement the steps in the CSI receiving method according to any one of claims 13 to 20.