CN111435853B

CN111435853B - Indicating method and indicating equipment for CSI (channel State information) parameters

Info

Publication number: CN111435853B
Application number: CN201910107391.XA
Authority: CN
Inventors: 施源
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-02-02
Filing date: 2019-02-02
Publication date: 2023-07-14
Anticipated expiration: 2039-02-02
Also published as: CN111435853A

Abstract

The embodiment of the invention discloses a method and equipment for indicating Channel State Information (CSI) parameters, which are used for solving the transmission problem caused by inconsistent understanding of the CSI parameters between terminal equipment and network equipment. The method is executed by the terminal equipment and comprises the following steps: determining a first parameter according to a preset parameter set; and sending the CSI, wherein the CSI comprises the first parameter, and the first parameter is used for the network equipment to obtain a CSI parameter value according to the first parameter.

Description

Indicating method and indicating equipment for CSI (channel State information) parameters

Technical Field

The embodiment of the application relates to the field of communication, in particular to a method and equipment for indicating channel state information (Channel State Information, CSI) parameters.

Background

The New air interface (NR) Rel-15 enhances the CSI feedback of the terminal equipment, and the CSI feedback is in two modes of type I and type II. The terminal equipment may need to report CSI parameters such as indication information (Number of Non-Zero Coefficients Indication, NNZCI) of the Number of Non-zero coefficients during CSI feedback. In the related art, no related scheme for reporting CSI parameters is provided, which may cause transmission problems between the terminal device and the network device due to inconsistent understanding of CSI parameters, and affect the effectiveness of communication. Therefore, it is necessary to provide a related scheme for CSI parameter reporting.

Disclosure of Invention

The embodiment of the invention aims to provide a method and equipment for indicating CSI parameters, which are used for solving the transmission problem caused by inconsistent understanding of the CSI parameters between terminal equipment and network equipment.

In a first aspect, there is provided a method for indicating CSI parameters, the method being performed by a terminal device, the method comprising: determining a first parameter according to a preset parameter set; and sending the CSI, wherein the CSI comprises the first parameter, and the first parameter is used for the network equipment to obtain a CSI parameter value according to the first parameter.

In a second aspect, there is provided a method of indicating CSI parameters, the method being performed by a network device, the method comprising: receiving CSI, wherein the CSI comprises a first parameter which is determined by terminal equipment according to a preset parameter set; and obtaining a CSI parameter value according to the first parameter.

In a third aspect, there is provided a terminal device comprising: the parameter determining module is used for determining a first parameter according to a preset parameter set; and the sending module is used for sending the CSI, wherein the CSI comprises the first parameter, and the first parameter is used for the network equipment to obtain a CSI parameter value according to the first parameter.

In a fourth aspect, there is provided a network device comprising: the receiving module is used for receiving the CSI, wherein the CSI comprises a first parameter which is determined by the terminal equipment according to a preset parameter set; and the parameter determining module is used for obtaining the CSI parameter value according to the first parameter.

In a fifth aspect, there is provided a terminal device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program implementing the steps of the method for indicating CSI parameters according to the first aspect when being executed by the processor.

In a sixth aspect, there is provided a network device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program implementing the steps of the method of indicating CSI parameters according to the second aspect when executed by the processor.

In a seventh aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of indicating CSI parameters according to the first and second aspects.

In the embodiment of the invention, the terminal equipment can determine the first parameter according to the preset parameter set; the transmitted CSI comprises the first parameter, so that the network equipment can obtain the value of the CSI parameter according to the first parameter, transmission problems caused by inconsistent understanding of the CSI parameter between the terminal equipment and the network equipment are avoided, and communication effectiveness is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a schematic flow chart of a method of indicating CSI parameters according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a method of indicating CSI parameters according to another embodiment of the present invention;

fig. 3 is a schematic structural view of a terminal device according to an embodiment of the present invention;

fig. 4 is a schematic diagram of the structure of a network device according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a terminal device according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a network device according to another embodiment of the present invention.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be understood that the technical solution of the embodiment of the present invention may be applied to various communication systems, for example: a long term evolution (Long Term Evolution, LTE) system, an LTE frequency division duplex (Frequency Division Duplex, FDD) system, an LTE time division duplex (Time Division Duplex, TDD), a universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS) or worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) telecommunications system, a 5G system, or a New Radio (NR) system, or a subsequent evolution telecommunications system.

In an embodiment of the present invention, the Terminal device may include, but is not limited to, a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Mobile phone (Mobile phone), a User Equipment (UE), a handset (handset), a portable device (portable Equipment), a vehicle (vehicle), and the like, and may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), for example, the Terminal device may be a Mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the like, and the Terminal device may also be a portable, pocket, hand-held, computer-built-in, or vehicle-mounted Mobile device.

In the embodiment of the invention, the network equipment is a device which is deployed in the wireless access network and used for providing a wireless communication function for the terminal equipment. The network device may be a base station, which may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of devices with base station functionality may vary. For example, in LTE networks, referred to as Evolved nodebs (enbs or enodebs), in third generation (3rd Generation,3G) networks, referred to as Node bs (Node bs), or network devices in subsequent Evolved communication systems, etc., although the term is not limiting.

As previously described, CSI feedback has two modes, type I (Type I) and Type II (Type II). The Type IICSI report may be a two-level codebook structure of W1 x W2, wherein: w1 is broadband information, including: the method comprises the steps of (1) selecting an index of an orthogonal beam group where an orthogonal beam is located, (2) selecting an index of the orthogonal beam in the orthogonal beam group, (3) selecting an orthogonal beam index corresponding to the strongest combination coefficient of each layer, and (4) quantizing the amplitude quantization value of the broadband combination coefficient of each layer. W2 is subband information, if the amplitude quantization is configured as wideband quantization, comprising: (1) Phase angle quantization values of the non-zero combined coefficients of each layer on each subband; if the amplitude quantization is configured as subband quantization, W2 further comprises: (2) Ratio quantized value of non-zero combined coefficient to wideband amplitude quantized value for each layer on each subband

Type IICSI feedback is divided into two parts, part1 and Part 2: part1 has a fixed payload size, including Rank Indication (RI), channel quality Indication (Channel Quality Indicator, CQI), number Indication of non-zero amplitude coefficients for each layer of wideband; part 2 contains a precoding matrix indicator (Precoding Matrix Indicator, PMI). Part1 and Part 2 are encoded separately. The load size of Part 2 can be determined from the information of Part 1.

The CSI feedback of Type II includes a compression coefficient matrix with dimension of 2LM, and the NR system provides a further compression method, and in general, the terminal device only needs to feed back K ₀ Coefficient of K ₀ <2LM, for K in the compression coefficient matrix ₀ The coefficients other than the number of coefficients are considered to be 0, and the terminal device does not feed back.

But if the non-zero coefficient in 2LM (or the coefficient that the terminal device deems to need feedback) is K ₁ (wherein K ₁ <K ₀ ) When the terminal equipment only needs to feed back K ₁ And coefficients. Therefore, the feedback coefficient K is required in part1 ₁ For indicating the number of coefficients fed back, but the related art does not provide a related scheme for reporting CSI parameters (e.g., the number of coefficients).

Alternatively, K is as described above ₀ May be configured by a network device, the method of indication by the network device being

The current alternative value of β is to choose two from the set {1/8,1/4,1/2,3/4}, L is the number of wideband beams, and M is the number of discrete Fourier transform (Discrete Fourier Transfom, DFT) basis vectors chosen.

To solve the problems in the prior art, as shown in fig. 1, an embodiment of the present invention provides a method 100 for indicating CSI parameters, including the following steps:

s102: and determining a first parameter according to a preset parameter set.

Before the embodiment of the invention is executed, the network equipment can configure the parameter K for the terminal equipment ₀ . If the parameters of each layer (layer) are the same, the network device may configure only one value; if the parameters of each layer (layer) are not the same, the network device may configure multiple values. K mentioned therein ₀ May be in the form of a specific value; or may be a product of a plurality of parameters.

In the embodiment of the present invention, if the number of coefficients that the terminal device considers to need feedback is smaller than or equal to K ₀ Step S102 may be executed when the first parameter is determined according to the preset parameter set. The first parameter may be one of the above parameter sets, or a value obtained from the parameters in the parameter sets, e.g. the parameter sets include an exponential parameter a ^b The exponent power parameter a ^b As the index b of (a) is the first parameter.

It should be noted that, parameters mentioned in the embodiments of the present invention, such as the first parameter, parameters in the parameter set, and the like, may be understood as specific numerical values.

Optionally, the above parameter set may be configured by the network device; or protocol conventions; or configured by the terminal device. If the above parameter set is configured by the terminal device, the terminal device may also report the parameter set, where the parameter set may be specifically carried in CSI part 2.

S104: and transmitting the CSI, wherein the CSI comprises the first parameter.

The first parameter is used for the network equipment to obtain the CSI parameter value according to the first parameter. Optionally, the first parameter is used for the network device to obtain the CSI parameter value according to the first parameter and the second parameter. For example, the network device may take the difference between the first parameter and the second parameter as the CSI parameter value; alternatively, the first parameter is a power exponent a ^b At the index b of (2), the networkThe device may sum the first parameter and the power exponent a ^b As CSI parameter values, etc., as to how the network device obtains CSI parameter values from the first parameter, as will be described in more detail in connection with various embodiments.

The second parameter mentioned here may be, in particular, the parameter K mentioned above, which is configured by the network device for the terminal device ₀ 。

Optionally, the CSI parameter value and the second parameter include at least one of: the number of non-zero coefficients NZC fed back by the terminal equipment and the number of preset NZCs; the number of discrete Fourier transform (Discrete Fourier Transfom, DFT) base vectors fed back by the terminal equipment and the number of preset DFT base vectors; and the number of inverse discrete fourier transform (Inverse Discrete Fourier Transfom, IDFT) basis vectors and the number of preset IDFT basis vectors fed back by the terminal device.

It can be understood that when the CSI parameter value is the number of NZCs fed back by the terminal device, the preset parameter set mentioned in step S102 is related to the non-zero coefficient NZC correspondingly; when the CSI parameter value is the number of DFT basis vectors fed back by the terminal device, correspondingly, the preset parameter set mentioned in step S102 is related to the DFT basis vectors; etc.

According to the indicating method of the CSI parameter provided by the embodiment of the invention, the terminal equipment can determine the first parameter according to the preset parameter set; the transmitted CSI comprises the first parameter, so that the network equipment can obtain the value of the CSI parameter according to the first parameter, transmission problems caused by inconsistent understanding of the CSI parameter between the terminal equipment and the network equipment are avoided, and communication effectiveness is improved.

Optionally, as an embodiment, determining the first parameter according to the preset parameter set mentioned in step S102 of the above embodiment includes: and selecting a first parameter from the parameter set. The form of parameter sets, e.g. { b ₁ ,b ₂ ,…,b _i (wherein b) _i The lower right corner i is an integer and indicates the number. Specifically, the terminal device may select an appropriate parameter from the parameter set according to the CSI parameter value as the first parameter and feed back the first parameter to the network device, so that the networkThe device may derive the CSI parameter value from the difference between the second parameter and the first parameter. The second parameter may be, in particular, the aforementioned parameter K configured by the network device for the terminal when the CSI parameter value is the number of NZCs ₀ 。

In this embodiment, if zero is not included in the parameter set and the first parameter is equal to zero, the terminal device may further indicate the first parameter (zero) by implicitly indicating, where the CSI parameter value fed back by the terminal device is equal to a preset CSI parameter value, for example, the number of NZCs fed back by the terminal device and the number of preset NZCs.

In this embodiment, the value of the first parameter fed back by the terminal device is generally much smaller than the difference between the second parameter and the first parameter, so that signaling overhead can be saved.

Optionally, as an embodiment, at least one of the zero and exponent power parameters is included in the parameter set mentioned in step S102 of the above embodiment, the form of the parameter set being for example

The parameter set includes both zero and exponent power parameters, where n is a non-negative integer, and may be defined by network device configuration or protocol, b _i I represents a sequence number, which is an integer. Thus, the determining of the first parameter according to the preset parameter set mentioned in step S102 comprises:

1) Selecting a target parameter from the parameter sets, wherein the target parameter is one of the parameter sets;

2) If the target parameter is an exponential parameter (e.g

) Then the index of the target parameter (e.g. b _i ) As the first parameter; or if the target parameter is zero, taking the target parameter zero as the first parameter.

Thus, in case the first parameter is equal to zero, the CSI parameter value is equal to the second parameter, the network device may be directlyThe value of the second parameter is then taken as the CSI parameter value. Alternatively, in case said first parameter is not equal to zero, i.e. the target parameter is an exponential parameter (e.g

) In the above, the network device may obtain the CSI parameter value according to the difference between the second parameter and the target parameter.

In this embodiment, the value of the first parameter fed back by the terminal device is generally much smaller than the difference between the second parameter and the target parameter, so that signaling overhead can be saved.

Optionally, as an embodiment, determining the first parameter according to the preset parameter set mentioned in step S102 of the above embodiment includes: and selecting a first parameter from the parameter set. In this embodiment, the form of the parameter set is e.g. { b } ₁ ,b ₂ ,…,b _i (wherein b) _i For numbers greater than zero, the lower right corner i represents the ordinal number. Specifically, the terminal device may select an appropriate parameter from the parameter set according to the CSI parameter value as a first parameter and feed back the first parameter to the network device, so that the network device may obtain the CSI parameter value by rounding up or rounding down according to the product of the second parameter and the first parameter.

In this embodiment, if 1 is not included in the parameter set and the first parameter is equal to 1, the terminal device may further indicate the first parameter (1) by implicitly indicating, where the CSI parameter value fed back by the terminal device is equal to the preset CSI parameter value, for example, the number of NZCs fed back by the terminal device and the number of preset NZCs.

In this embodiment, the value of the first parameter fed back by the terminal device is generally much smaller than the product of the second parameter and the first parameter, so that signaling overhead can be saved.

Optionally, as an embodiment, the parameter set mentioned in step S102 of the above embodiment includes a parameter whose denominator is an exponential power, a form of the parameter set is, for example

Wherein n can be a fixed value agreed by a protocol, or can be fed back by terminal equipment; or implicitly by the terminal device. Thus, the determining of the first parameter according to the preset parameter set mentioned in step S102 comprises:

1) A target parameter is selected from the set of parameters (e.g.,

)；

2) The target parameters are set

As the first parameter; or, the target parameter +.>

The exponent b of the denominator of (b) _i As the first parameter;

Thus, the network device can be based on the second parameter and the target parameter

The product of (2) is rounded up or rounded down to obtain the CSI parameter value.

In this embodiment, optionally, the CSI fed back by the terminal device may further include indication information, where the indication information is used to indicate the target parameter

The base number n of the denominator of (b), specifically, the base number n of the denominator of all parameters in the parameter set is equal.

In this embodiment, the value of the first parameter fed back by the terminal device is typically much smaller than the second parameter and the target parameter

And the signaling overhead can be saved.

Optionally, as an embodiment, the second parameter configured by the network device is obtained according to a product of the product coefficient and the third parameter, e.g. the second parameter

Wherein, beta can be called as a product coefficient, the value of 2LM can be called as a third parameter, and the third parameter can be in the form of the product of a plurality of parameters, or can be a constant value. The form of the parameter set in this embodiment is e.g. { b } ₁ ,b ₂ ,…,b _i (wherein b) _i The lower right corner i is an integer and indicates the number.

Thus, determining the first parameter according to the preset parameter set mentioned in step S102 of the above embodiment includes: and selecting a first parameter from the parameter set. Specifically, the terminal device may select an appropriate parameter from the parameter set according to the CSI parameter value as the first parameter and feed back the first parameter to the network device, so that the network device may obtain the CSI parameter value by rounding up or rounding down the product of the product coefficient and the third parameter according to the difference between the product coefficient and the first parameter, and the following formula may be referred to specifically:

in the formula, K ₁ Representing the CSI parameter value; beta represents a product coefficient; b _i Is the first parameter fed back by the terminal equipment, 2LM is the third parameter, and the symbol in the formula

Representing an upward rounding.

In this embodiment, the value of the first parameter fed back by the terminal device is generally much smaller than the specific CSI parameter value, which can save signaling overhead.

Where n is a non-negative integer, which may be agreed upon by the network device configuration or protocol, b _i I represents a sequence number, which is an integer. The second parameter is obtained from the product of the product coefficient and the third parameter (see the previous embodiment), so that the determining the first parameter from the preset parameter set mentioned in step S102 comprises:

1) Selecting a target parameter from the parameter set, wherein the target parameter can be zero or

2) If the target parameter is an exponential parameter (e.g

) Then the index of the target parameter (e.g. b _i ) As a first parameter; or if the target parameter is zero, the target parameter is used as the first parameter.

In this way, in case the first parameter is equal to zero, the CSI parameter value is equal to the second parameter, and the network device may directly take the value of the second parameter as CSI parameter value. Or in the case that the first parameter is not equal to zero, that is, in the case that the first parameter is an exponent parameter, the network device may be obtained by rounding up or rounding down the product of the product coefficient and the target parameter according to the difference between the product coefficient and the third parameter, and the following formula may be specifically referred to:

In the formula, K ₁ Representing the CSI parameter value; beta represents a product coefficient;

is a target parameter corresponding to a first parameter fed back by the terminal equipment, b _i Is the first parameter, 2LM is the third parameter, the sign in the formula +.>

Representing an upward rounding.

Wherein, beta can be called as a product coefficient, the value of 2LM can be called as a third parameter, and the third parameter can be in the form of the product of a plurality of parameters, or can be a constant value. The form of parameter sets, e.g. { b ₁ ,b ₂ ,…,b _i (wherein b) _i The lower right corner i is an integer and indicates the number. Thus, determining the first parameter according to the preset parameter set mentioned in step S102 of the above embodiment includes: and selecting a first parameter from the parameter set. Specifically, the terminal device may select an appropriate parameter from the parameter set according to the CSI parameter value as a first parameter and feed back the first parameter to the network device, so that the network device may obtain the CSI parameter value by rounding up or rounding down according to the product of the first parameter and the third parameter, and the following formula may be referred to specifically:

in the formula, K ₁ Representing the CSI parameter value; b _i Is the first parameter fed back by the terminal equipment, 2LM is the third parameter, and the symbol in the formula

Representing an upward rounding.

Optionally, the parameters in the parameter set in this embodiment are all or partially the same as the parameters in the target parameter set; wherein the set of target parameters includes: and the product coefficient (beta) set of the second parameter, or a modified product coefficient set obtained by modifying the product coefficient set. The modified product coefficient set may be obtained by dividing parameters in the product coefficient set by preset parameters.

Thus, the following steps may be further included before step S102 in the embodiment shown in fig. 1: and removing parameters greater than 1 in the modified product coefficient set.

In order to describe the indicating method of the CSI parameter provided in the embodiment of the present invention in detail, the following description will be given by taking several specific embodiments as examples.

With reference to the following embodiments one to seven, specific description will be given of related embodiments of the number of non-zero coefficients NNZCs of CSI parameters. In embodiments one through seven, NNZCI indicates

Wherein β may be referred to as a product coefficient, and the value of 2LM may be referred to as a third parameter, the sign +.>

Representing an upward rounding. It will be appreciated that the downward rounding is similar to the upward rounding and is equally applicable to the various embodiments of the present invention and will not be repeated here.

Embodiment one: linear differential feedback

In this embodiment, the candidate set of product coefficients β is {1/4,1/2}, and the indication information of the network configuration β indicates that the product coefficient is 1/2.

The protocol conventions differential set (i.e., the parameter set mentioned in the previous embodiments) is {1,3/4,1/2,1/4}.

The terminal feedback NNZCI may, for example, be 00 for a feedback value of 1, 01 for a feedback value of 3/4, 10 for a feedback value of 1/2, and 11 for a feedback value of 1/4, which are not limited in the order of combination according to the embodiment of the present invention.

If the selected value in the differential set indicated by the NNZCI is 1 (corresponding to the first parameter in the previous embodiments, similar to the previous one), the number of non-zero coefficients is 1×1/2×θ and the result is rounded up, where θ=2lm;

if the selected value in the difference set indicated by the NNZCI is 3/4, the number of the non-zero coefficients is 3/4 multiplied by 1/2 multiplied by theta and the result is rounded upwards;

if the selected value in the difference set indicated by the NNZCI is 1/2, the number of the non-zero coefficients is 1/2 multiplied by theta and the result is rounded upwards;

if the selected value in the differential set indicated by NNZCI is 1/4, the number of non-zero coefficients is 1/4×1/2×θ and the result is rounded up.

Embodiment two: linear differential feedback

In this embodiment, the candidate set of the product coefficient β is {1/4,1/2}, and the indication information of the network configuration β indicates that the product coefficient is 1/2, and the differential set agreed at this time may be a differential set obtained by dividing the candidate set of the product coefficient β by β (i.e. the parameter set mentioned in the foregoing embodiments) is {1/2,1}.

The NNZCI is fed back by the terminal, and 0 can represent that the feedback value is 1/2; a 1 may indicate that the value of the feedback is 1 and vice versa.

if the selected value in the set indicated by NNZCI is 1, the number of non-zero coefficients is 1 x 1/2 x theta and the result is rounded up.

Embodiment III: linear differential feedback

In this embodiment, the candidate set of product coefficients β is {1/8,1/4,1/2,3/4}, and the indication information of the network configuration β indicates that the product coefficient is 1/2, and the differential set agreed at this time may be a differential set obtained by dividing the candidate set of product coefficients β by β (i.e. the parameter set mentioned in the foregoing embodiments), specifically {1/4,1/2,1,3/2}. Alternatively, the embodiment may also pre-agree to eliminate values greater than 1 in the differential set, i.e., eliminate the parameter 3/2, the differential set of parameters is {1/4,1/2,1}

The terminal device feedback NNZCI,00 may represent that the feedback value is 1/4, 01 may represent that the feedback value is 1/2, and 10 may represent that the feedback value is 1. Alternatively, if 3/2 is not removed, the value of feedback may be indicated as 3/2 by 11, without limiting the order of the combinations.

If the selected value in the NNZCI indicated set is 1/4, the number of the non-zero coefficients is 1/4 multiplied by 1/2 multiplied by theta and the result is rounded upwards;

if the selected value in the NNZCI indicated set is 1/2, the number of the non-zero coefficients is 1/2 multiplied by theta and the result is rounded upwards;

if the selected value in the NNZCI indicated set is 1, the number of the non-zero coefficients is 1 multiplied by 1/2 multiplied by theta and the result is rounded up;

alternatively, if the selected value in the set indicated by the NNZCI is 3/2, the number of non-zero coefficients is 1×1/2×θ and the result is rounded up, because the maximum number of non-zero coefficients is 1×1/2×θ.

Embodiment four: linear differential feedback

The differential set, i.e. the set of parameters mentioned in the previous embodiments), is identical to the candidate set of product coefficients β, i.e. also {1/4,1/2}.

Terminal feedback NNZCI,0 may represent a feedback value of 1/4, and 1 may represent a feedback value of 1/2, and vice versa.

If the selected value in the difference set indicated by the NNZCI is 1/4, the number of the non-zero coefficients is 1/4 xθ and the result is rounded upwards;

if the selected value in the NNZCI indicated set is 1/2, the number of non-zero coefficients is 1/2 x theta and the result is rounded up.

Fifth embodiment: linear differential feedback

In this embodiment, the candidate set of product coefficients β is {1/4,1/2}, and the indication information of the network device configuration β indicates that the product coefficient is 1/2, and the differential set (i.e., the parameter set mentioned in the previous embodiments) in this embodiment is {1/8,1/4}.

The terminal equipment feeds back NNZCI,0 can represent that the feedback value is 1/8; a value of 1 may represent a feedback value of 1/4. And vice versa.

If the selected value in the difference set indicated by the NNZCI is 1/8, the number of the non-zero coefficients is 1/8 xθ and the result is rounded upwards;

if the selected value in the differential set indicated by NNZCI is 1/4, the number of non-zero coefficients is 1/4 xθ and the result is rounded up.

Example six: linear difference feedback

In this embodiment, the candidate set of product coefficients β is {1/4,1/2}, and the indication information of the network device configuration β indicates that the product coefficient is 1/2.

The differential set in this embodiment (i.e., the set of parameters mentioned in the previous embodiments) is {0,1,3,5}.

The terminal equipment feeds back NNZCI,00 can represent that the feedback value is 0;01 may represent a feedback value of 1;10 may represent a feedback value of 3;11 may represent a feedback value of 5. The indication manner of the above-mentioned parameters is not limited thereto, and for example, 00 may be used to indicate that the feedback value is 5, 01 is 3, 10 is 1, 11 is 0, etc.

If the selected value in the NNZCI indicated set is 0, the number of the non-zero coefficients is 1/2 x theta-0 and the result is rounded up;

if the selected value in the NNZCI indicated set is 1, the number of the non-zero coefficients is 1/2 x theta-1 and the result is rounded up;

if the selected value in the NNZCI indicated set is 3, the number of the non-zero coefficients is 1/2 x theta-3 and the result is rounded up;

if the selected value in the NNZCI indicated set is 5, the number of the non-zero coefficients is 1/2 x theta-5 and the result is rounded up;

optionally, in this embodiment, if the difference set is {0,1,2,3}, when the terminal device feeds back the NNZCI, it may indicate that the feedback value is 0 by 00, that the feedback value is 1 by 01, that the feedback value is 2 by 10, and that the feedback value is 3 by 11, and the order of the above combinations is not limited thereto.

The number calculation method of the non-zero coefficients is the same as that of the sixth embodiment, and a description thereof will not be repeated here.

Embodiment seven: exponential difference feedback

The set of index differences in this embodiment (i.e., the set of parameters mentioned in the previous several embodiments) is {0,2 ¹ ，2 ² ，2 ³ Base of exponent power n=2.

The terminal feedback NNZCI,00 may represent that the feedback value is 0, 01 may represent that the feedback value is 1, 10 may represent that the feedback value is 2, 11 may represent that the feedback value is 3, and the order of the above combination is not limited thereto.

if the selected value in the NNZCI indicated set is 0, the number of non-zero coefficients is 1/2 x theta-2 ¹ And rounding the result upwards;

if the selected value in the NNZCI indicated set is 0, the number of non-zero coefficients is 1/2 x theta-2 ² And rounding the result upwards;

if the selected value in the NNZCI indicated set is 0, the number of non-zero coefficients is

And the result rounded up.

Referring to the following embodiments eight and nine, a related embodiment in which the CSI parameter is the number of DFT basis vectors is specifically described.

In embodiments eight and nine, the network device indication

N _length Is determined by the number of sub-bands, preset parameters and the like, N _length Corresponding toThird parameter in the previous several embodiments. ρ ε {1/4,1/2}, ρ corresponds to the product coefficients in the previous embodiments. Symbols in the formula->

Representing an upward rounding. It will be appreciated that the downward rounding is similar to the upward rounding and will not be repeated here

Example eight: linear differential feedback

In this embodiment, the candidate set of product coefficients ρ is {1/4,1/2}, and the indication information of the network configuration ρ indicates that the parameter is 1/2.

The differential set (i.e. the set of parameters mentioned in the previous embodiments) is identical to the candidate set of product coefficients ρ.

The terminal feeds back the information of the number of DFT bases, 0 can represent that the value of feedback is 1/4, and 1 can represent that the value of feedback is 1/2, and vice versa.

If the selected value in the indicated set is 1/4, the quantity of DFT base vectors fed back by the terminal is 1/4 XN _length And rounding the result upwards;

if the selected value in the indicated set is 1/2, the quantity of DFT base vectors fed back by the terminal is 1/2 XN _length And the result rounded up.

Example nine: linear difference feedback

In this embodiment, the candidate set of product coefficients ρ is {1/4,1/2}, and the indication information of the network configuration ρ indicates that the product coefficient is 1/2.

The set of differences (i.e., the set of parameters mentioned in the previous embodiments) is {0,1,3,5}.

The feedback difference information of the terminal equipment indicates that 00 may represent that the feedback value is 0, 01 may represent that the feedback value is 1, 10 may represent that the feedback value is 3, 11 may represent that the feedback value is 5, and the combination sequence is not limited.

If the selected value in the set indicated by the difference information is 0, the quantity of DFT base vectors fed back by the terminal is 1/2 XN _length -0 and rounding up the result;

if you getThe selected value in the set indicated by the difference information is 1, and the quantity of DFT base vectors fed back by the terminal is 1/2 XN _length -1 and rounding up the result;

if the selected value in the set indicated by the difference information is 3, the quantity of DFT base vectors fed back by the terminal is 1/2 XN _length -3 and rounding up the result;

if the selected value in the set indicated by the difference information is 5, the number of the non-zero coefficients is 1/2 XN _length -5 and rounding up the result.

The method for indicating CSI parameters according to the embodiments of the present invention is described in detail above in connection with fig. 1 and the following embodiments. A method of indicating CSI parameters according to another embodiment of the present invention will be described in detail with reference to fig. 2. It will be appreciated that the interaction of the network device with the terminal device described from the network device side is the same as the description of the terminal device side in the method shown in fig. 1, and the description thereof is omitted appropriately to avoid repetition.

Fig. 2 is a schematic flow chart of an implementation of a method for indicating CSI parameters according to an embodiment of the present invention, which may be applied to a network device side. As shown in fig. 2, the method 200 includes:

s202: and receiving the CSI, wherein the CSI comprises the first parameter.

The first parameter is determined by the terminal equipment according to a preset parameter set;

s204: and obtaining a CSI parameter value according to the first parameter.

Optionally, as an embodiment, the obtaining the CSI parameter value according to the first parameter includes: and obtaining a CSI parameter value according to the first parameter and the second parameter.

Optionally, as an embodiment, the CSI parameter value and the second parameter include at least one of:

the number of non-zero coefficients NZC fed back by the terminal equipment and the number of preset NZCs;

the quantity of the DFT base vectors fed back by the terminal equipment and the quantity of the preset DFT base vectors; and

And the number of the IDFT base vectors and the number of preset IDFT base vectors fed back by the terminal equipment.

Optionally, as an embodiment, the parameter set is obtained by:

the network equipment is configured; or (b)

Protocol appointments; or (b)

The terminal equipment is configured.

Optionally, as an embodiment, the first parameter is selected by the terminal device from the parameter set, and the obtaining the CSI parameter value according to the first parameter and the second parameter includes:

and obtaining a CSI parameter value according to the difference between the second parameter and the first parameter.

Optionally, as an embodiment, the parameter set includes at least one of zero and an exponent power parameter, and the obtaining the CSI parameter value according to the first parameter and the second parameter includes:

in case the first parameter is equal to zero, the second parameter is equal to the CSI parameter value; or (b)

Obtaining the CSI parameter value according to the difference between the second parameter and the target parameter under the condition that the first parameter is not equal to zero;

the terminal equipment takes the index of the target parameter as the first parameter under the condition that the target parameter is an exponent power parameter; or in case the target parameter is zero, the terminal device takes the target parameter as the first parameter.

and obtaining the CSI parameter value according to the product of the second parameter and the first parameter by rounding upwards or rounding downwards.

Optionally, as an embodiment, the parameter set includes a parameter whose denominator is an exponent power, and the obtaining the CSI parameter value according to the first parameter and the second parameter includes:

obtaining the CSI parameter value by upwardly rounding or downwardly rounding according to the product of the second parameter and the target parameter;

the terminal equipment takes the target parameter as the first parameter; or taking the index of the denominator of the target parameter as the first parameter.

Optionally, as an embodiment, the CSI further includes indication information, and the method further includes:

and determining the base number of the denominator of the target parameter according to the indication information.

Optionally, as an embodiment, the second parameter is obtained according to a product of a product coefficient and a third parameter, and obtaining the CSI parameter value according to the first parameter and the second parameter includes:

Obtaining the CSI parameter value by rounding up or rounding down the product of the product coefficient and the third parameter according to the difference between the product coefficient and the first parameter;

wherein the first parameter is selected from the parameter set by the terminal device.

Optionally, as an embodiment, the parameter set includes at least one of zero and an exponent power parameter, the second parameter is obtained according to a product of a product coefficient and a third parameter, and obtaining the CSI parameter value according to the first parameter and the second parameter includes:

Under the condition that the first parameter is not equal to zero, according to the difference between the product coefficient and the target parameter, the product of the product coefficient and the third parameter is rounded upwards or rounded downwards, and the CSI parameter value is obtained;

the terminal equipment takes the index of the target parameter as the first parameter under the condition that the target parameter is an exponent power parameter; or, in the case that the target parameter is zero, the terminal device takes the target parameter as the first parameter.

Optionally, as an embodiment, the second parameter is obtained according to a product of a product coefficient and a third parameter, the first parameter is selected by the terminal device from the parameter set, and obtaining the CSI parameter value according to the first parameter and the second parameter includes:

and obtaining the CSI parameter value by rounding up or rounding down according to the product of the first parameter and the third parameter.

Optionally, as an embodiment, the parameters in the parameter set are all the same or partially the same as the parameters in the target parameter set;

wherein the set of target parameters includes: and the product coefficient set of the second parameter or a modified product coefficient set obtained after the product coefficient set is modified.

Optionally, as an embodiment, the modified product coefficient set is obtained by dividing parameters in the product coefficient set by a preset parameter a.

Optionally, as an embodiment, in a case where zero is not included in the parameter set and the first parameter is equal to zero, the method further includes:

and determining the first parameter, wherein the first parameter is indicated by the terminal equipment in an implicit indication manner.

Optionally, as an embodiment, in the case that 1 is not included in the parameter set and the first parameter is equal to 1, the method further includes:

The method of indicating CSI parameters according to the embodiment of the present invention is described in detail above with reference to fig. 1 to 2. The terminal device according to an embodiment of the present invention will be described in detail below with reference to fig. 3.

Fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 3, the terminal device 300 includes:

the parameter determining module 302 may be configured to determine a first parameter according to a preset parameter set;

the sending module 304 may be configured to send CSI, where the CSI includes the first parameter, and the first parameter is used for the network device to obtain a CSI parameter value according to the first parameter.

The terminal equipment provided by the embodiment of the invention can determine the first parameter according to the preset parameter set; the transmitted CSI comprises the first parameter, so that the network equipment can obtain the value of the CSI parameter according to the first parameter, transmission problems caused by inconsistent understanding of the CSI parameter between the terminal equipment and the network equipment are avoided, and communication effectiveness is improved.

Optionally, as an embodiment, the first parameter is used for the network device to obtain a CSI parameter value according to the first parameter and the second parameter.

Optionally, as an embodiment, the parameter set is obtained by:

the network equipment is configured; or (b)

Protocol appointments; or (b)

The terminal equipment is configured.

Alternatively, as an embodiment, the parameter determining module 302 may specifically be configured to:

selecting a first parameter from the parameter set;

wherein the CSI parameter value is derived from a difference between the second parameter and the first parameter.

Optionally, as an embodiment, the parameter set includes at least one of zero and an exponent parameter, and the parameter determining module 302 may specifically be configured to: selecting a target parameter from the parameter set;

If the target parameter is an exponent power parameter, taking the exponent of the target parameter as the first parameter; or (b)

If the target parameter is zero, taking the target parameter as the first parameter;

wherein, in case the first parameter is equal to zero, the CSI parameter value is equal to the second parameter; or (b)

In case the first parameter is not equal to zero, the CSI parameter value is derived from the difference between the second parameter and the target parameter.

selecting a first parameter from the parameter set;

and the CSI parameter value is obtained by rounding up or rounding down according to the product of the second parameter and the first parameter.

Optionally, as an embodiment, the parameter set includes a parameter whose denominator is an exponent, and the parameter determining module 302 may specifically be configured to:

selecting a target parameter from the parameter set;

taking the target parameter as the first parameter; or taking an index of a denominator of the target parameter as the first parameter;

and the CSI parameter value is obtained by rounding up or rounding down according to the product of the second parameter and the target parameter.

Optionally, as an embodiment, the CSI further includes indication information, where the indication information is used to indicate a base of a denominator of the target parameter.

Optionally, as an embodiment, the second parameter is obtained according to the product of the product coefficient and the third parameter, and the parameter determining module 302 may specifically be configured to:

selecting a first parameter from the parameter set;

and the CSI parameter value is obtained by rounding up or rounding down the product of the CSI parameter value and the third parameter according to the difference between the product coefficient and the first parameter.

Optionally, as an embodiment, the parameter set includes at least one of zero and an exponent parameter, where the second parameter is obtained according to a product of the product coefficient and a third parameter, and the parameter determining module 302 may specifically be configured to:

selecting a target parameter from the parameter set;

if the target parameter is an exponent power parameter, taking the exponent of the target parameter as a first parameter; or, if the target parameter is zero, taking the target parameter as the first parameter;

And under the condition that the first parameter is not equal to zero, the CSI parameter value is obtained by rounding up or rounding down the product of the product coefficient and the target parameter according to the difference between the product coefficient and the target parameter.

selecting a first parameter from the parameter set;

and the CSI parameter value is obtained by rounding up or rounding down according to the product of the first parameter and the third parameter.

Optionally, as an embodiment, the parameters in the parameter set are all the same or partially the same as the parameters in the target parameter set; wherein the set of target parameters includes: and the product coefficient set of the second parameter or a modified product coefficient set obtained after the product coefficient set is modified.

Optionally, as an embodiment, the modified product coefficient set is obtained by dividing parameters in the product coefficient set by preset parameters.

Alternatively, as an embodiment, the parameter determining module 302 may be further configured to:

And removing parameters greater than 1 in the modified product coefficient set.

Optionally, as an embodiment, in a case where zero is not included in the parameter set and the first parameter is equal to zero, the foregoing sending module 304 may be further configured to:

the first parameter is indicated by means of an implicit indication.

Optionally, as an embodiment, in a case where 1 is not included in the parameter set and the first parameter is equal to 1, the foregoing sending module 304 may be further configured to:

the first parameter is indicated by means of an implicit indication.

The terminal device 300 according to the embodiment of the present invention may refer to the flow of the method 100 corresponding to the embodiment of the present invention, and each unit/module in the terminal device 300 and the other operations and/or functions described above are respectively for implementing the corresponding flow in the method 100, which is not described herein for brevity.

Fig. 4 is a schematic structural diagram of a network device according to an embodiment of the present invention. As depicted in fig. 4, the network device 400 includes:

a receiving module 402, configured to receive CSI, where the CSI includes a first parameter, and the first parameter is determined by a terminal device according to a preset parameter set;

the parameter determining module 404 may be configured to obtain a CSI parameter value according to the first parameter.

The network equipment provided by the embodiment of the invention determines the first parameter according to the preset parameter set by the terminal equipment; the transmitted CSI comprises the first parameter, so that the network equipment can obtain the value of the CSI parameter according to the first parameter, transmission problems caused by inconsistent understanding of the CSI parameter between the terminal equipment and the network equipment are avoided, and communication effectiveness is improved.

Alternatively, as an embodiment, the parameter determining module 404 may specifically be configured to: and obtaining a CSI parameter value according to the first parameter and the second parameter.

Optionally, as an embodiment, the parameter set is obtained by:

the network equipment is configured; or (b)

Protocol appointments; or (b)

The terminal equipment is configured.

Optionally, as an embodiment, the first parameter is selected by the terminal device from the parameter set, and the above parameter determining module 404 may specifically be used to:

Optionally, as an embodiment, the parameter set includes at least one of zero and an exponent parameter, and the parameter determining module 404 may specifically be configured to:

Optionally, as an embodiment, the parameter set includes a parameter whose denominator is an exponent, and the parameter determining module 404 may specifically be configured to:

Optionally, as an embodiment, the CSI further includes indication information, and the parameter determining module 404 may specifically be configured to:

Optionally, as an embodiment, the second parameter is obtained according to the product of the product coefficient and the third parameter, and the parameter determining module 404 may specifically be configured to:

Optionally, as an embodiment, the parameter set includes at least one of zero and an exponent parameter, where the second parameter is obtained according to a product of the product coefficient and a third parameter, and the parameter determining module 404 may specifically be configured to:

Optionally, as an embodiment, the second parameter is obtained according to a product of a product coefficient and a third parameter, and the first parameter is selected by the terminal device from the parameter set, and the parameter determining module 404 may specifically be configured to:

Optionally, as an embodiment, in a case where zero is not included in the parameter set and the first parameter is equal to zero, the parameter determining module 404 described above may be further configured to:

Alternatively, as an embodiment, in a case where 1 is not included in the parameter set and the first parameter is equal to 1, the above-mentioned parameter determining module 404 may be further configured to:

The network device 400 according to the embodiment of the present invention may refer to the flow of the method 200 corresponding to the embodiment of the present invention, and each unit/module in the network device 400 and the other operations and/or functions described above are respectively for implementing the corresponding flow in the method 200, which is not described herein for brevity.

Fig. 5 is a block diagram of a terminal device according to another embodiment of the present invention. The terminal device 500 shown in fig. 5 includes: at least one processor 501, memory 502, at least one network interface 504, and a user interface 503. The various components in the terminal device 500 are coupled together by a bus system 505. It is understood that bus system 505 is used to enable connected communications between these components. The bus system 505 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various buses are labeled as bus system 505 in fig. 5.

The user interface 503 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, a trackball, a touch pad, or a touch screen, etc.).

It will be appreciated that the memory 502 in embodiments of the invention can be either volatile memory or nonvolatile memory, or can 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 EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). The memory 502 of the systems and methods described in embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In some implementations, the memory 502 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof: an operating system 5021 and application programs 5022.

The operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 5022 includes various application programs such as a Media Player (Media Player), a Browser (Browser), and the like for realizing various application services. A program for implementing the method according to the embodiment of the present invention may be included in the application 5022.

In the embodiment of the present invention, the terminal device 500 further includes: a computer program stored on the memory 502 and executable on the processor 501, which when executed by the processor 501, implements the steps of the method 100 as follows.

The method disclosed in the above embodiment of the present invention may be applied to the processor 501 or implemented by the processor 501. The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware or instructions in software in the processor 501. The processor 501 may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a computer readable storage medium well known in the art such as random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, and the like. The computer readable storage medium is located in a memory 502, and the processor 501 reads information in the memory 502 and, in combination with its hardware, performs the steps of the method described above. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 501, performs the steps of the method 100 embodiments described above.

It is to be understood that the embodiments of the invention described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the processing units may be implemented within one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (DSP devices, DSPD), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described in embodiments of the present invention may be implemented by modules (e.g., procedures, functions, and so on) that perform the functions described in embodiments of the present invention. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

The terminal device 500 can implement each process implemented by the terminal device in the foregoing embodiment, and in order to avoid repetition, a description is omitted here.

Referring to fig. 6, fig. 6 is a block diagram of a network device to which an embodiment of the present invention is applied, which can implement details of method embodiment 500 and achieve the same effects. As shown in fig. 6, the network device 600 includes: processor 601, transceiver 602, memory 603 and bus interface, wherein:

In an embodiment of the present invention, the network device 600 further includes: computer programs stored on the memory 603 and executable on the processor 601, which when executed by the processor 601 implement the steps of the method 200.

In fig. 6, a bus architecture may comprise any number of interconnected buses and bridges, with various circuits of the one or more processors, represented in particular by processor 601, and the memory, represented in memory 603. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 602 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.

The processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 may store data used by the processor 601 in performing operations.

The embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, where the computer program when executed by a processor implements each process of the foregoing method embodiment 100 and the method embodiment 200, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted herein. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.

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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims

1. A method for indicating channel state information, CSI, parameters, the method being performed by a terminal device, the method comprising:

determining a first parameter according to a preset parameter set;

transmitting CSI, wherein the CSI comprises the first parameter, and the first parameter is used for obtaining a CSI parameter value by network equipment according to the first parameter;

the network equipment obtains a CSI parameter value according to the first parameter and the second parameter;

the CSI parameter value and the second parameter include at least one of:

2. The method of claim 1, wherein the set of parameters is obtained by:

the network equipment is configured; or (b)

Protocol appointments; or (b)

The terminal equipment is configured.

3. The method according to claim 1 or 2, wherein said determining the first parameter from a preset set of parameters comprises:

selecting a first parameter from the parameter set;

4. The method according to claim 1 or 2, wherein the parameter set includes at least one of zero and an exponent power parameter, and wherein determining the first parameter from the preset parameter set includes:

selecting a target parameter from the parameter set;

5. The method according to claim 1 or 2, wherein said determining the first parameter from a preset set of parameters comprises:

selecting a first parameter from the parameter set;

6. The method according to claim 1 or 2, wherein the parameter set includes a parameter whose denominator is an exponent, and the determining the first parameter according to the preset parameter set includes:

selecting a target parameter from the parameter set;

7. The method of claim 6, wherein the CSI further comprises indication information indicating a base of a denominator of the target parameter.

8. The method according to claim 1 or 2, wherein the second parameter is derived from the product of the product coefficient and a third parameter, and wherein determining the first parameter from the preset set of parameters comprises:

selecting a first parameter from the parameter set;

9. The method according to claim 1 or 2, wherein the parameter set includes at least one of zero and an exponent power parameter, the second parameter is obtained according to a product of a product coefficient and a third parameter, and determining the first parameter according to a preset parameter set includes:

selecting a target parameter from the parameter set;

if the target parameter is an exponent power parameter, taking the exponent of the target parameter as a first parameter; or (b)

10. The method according to claim 1 or 2, wherein the second parameter is derived from the product of the product coefficient and a third parameter, and wherein determining the first parameter from the preset set of parameters comprises:

selecting a first parameter from the parameter set;

11. The method of claim 10, wherein,

the parameters in the parameter set are all or partially the same as the parameters in the target parameter set;

12. The method of claim 11 wherein the modified set of product coefficients is obtained by dividing parameters in the set of product coefficients by preset parameters.

13. The method of claim 11, wherein prior to determining the first parameter from the set of preset parameters, the method further comprises:

and removing parameters greater than 1 in the modified product coefficient set.

14. A method according to claim 3, wherein in case zero is not included in the parameter set and the first parameter is equal to zero, the method further comprises:

the first parameter is indicated by means of an implicit indication.

15. The method of claim 4, wherein, in the case where zero is not included in the set of parameters and the first parameter is equal to zero, the method further comprises:

the first parameter is indicated by means of an implicit indication.

16. The method of claim 8, wherein, in the case where zero is not included in the set of parameters and the first parameter is equal to zero, the method further comprises:

the first parameter is indicated by means of an implicit indication.

17. The method of claim 9, wherein, in the case where zero is not included in the set of parameters and the first parameter is equal to zero, the method further comprises:

indicating the first parameter by means of implicit indication

18. The method of claim 5, wherein in the case where 1 is not included in the set of parameters and the first parameter is equal to 1, the method further comprises:

The first parameter is indicated by means of an implicit indication.

19. The method of claim 6, wherein in the case where 1 is not included in the set of parameters and the first parameter is equal to 1, the method further comprises:

the first parameter is indicated by means of an implicit indication.

20. The method of claim 10, wherein in the case where 1 is not included in the set of parameters and the first parameter is equal to 1, the method further comprises:

the first parameter is indicated by means of an implicit indication.

21. A method of indicating CSI parameters, the method being performed by a network device, the method comprising:

receiving CSI, wherein the CSI comprises a first parameter which is determined by terminal equipment according to a preset parameter set;

obtaining a CSI parameter value according to the first parameter;

wherein, the obtaining the CSI parameter value according to the first parameter includes: obtaining a CSI parameter value according to the first parameter and the second parameter;

the CSI parameter value and the second parameter include at least one of:

the number of the NZCs fed back by the terminal equipment and the number of preset NZCs;

the quantity of DFT base vectors fed back by the terminal equipment and the quantity of preset DFT base vectors; and

And the number of the IDFT base vectors fed back by the terminal equipment and the number of preset IDFT base vectors.

22. The method of claim 21, wherein the set of parameters is obtained by:

the network equipment is configured; or (b)

Protocol appointments; or (b)

The terminal equipment is configured.

23. The method according to claim 21 or 22, wherein the first parameter is selected by the terminal device from the set of parameters, and wherein obtaining CSI parameter values from the first parameter and the second parameter comprises:

and obtaining the CSI parameter value according to the difference between the second parameter and the first parameter.

24. The method according to claim 21 or 22, wherein at least one of zero and an exponent power parameter is included in the parameter set, and wherein deriving CSI parameter values from the first parameter and the second parameter comprises:

the terminal equipment takes the index of the target parameter as the first parameter under the condition that the target parameter is an exponent power parameter; or (b)

And in the case that the target parameter is zero, the terminal equipment takes the target parameter as the first parameter.

25. The method according to claim 21 or 22, wherein the first parameter is selected by the terminal device from the set of parameters, and wherein obtaining CSI parameter values from the first parameter and the second parameter comprises:

26. The method according to claim 21 or 22, wherein the parameter set includes a parameter whose denominator is an exponent, and the obtaining the CSI parameter value according to the first parameter and the second parameter includes:

obtaining the CSI parameter value by rounding up or rounding down according to the product of the second parameter and the target parameter;

the terminal equipment takes the target parameter as the first parameter; or (b)

Taking the index of the denominator of the target parameter as the first parameter.

27. The method of claim 26, wherein the CSI further comprises indication information, the method further comprising:

28. The method according to claim 21 or 22, wherein the second parameter is obtained from a product of a product coefficient and a third parameter, and wherein obtaining CSI parameter values from the first parameter and the second parameter comprises:

29. The method according to claim 21 or 22, wherein the parameter set includes at least one of zero and an exponent power parameter, the second parameter is obtained according to a product of a product coefficient and a third parameter, and obtaining CSI parameter values according to the first parameter and the second parameter includes:

30. The method according to claim 21 or 22, wherein the second parameter is obtained according to a product of a product coefficient and a third parameter, the first parameter is selected by the terminal device from the parameter set, and the obtaining CSI parameter values according to the first parameter and the second parameter comprises:

and obtaining the CSI parameter value according to the product of the first parameter and the third parameter by rounding upwards or rounding downwards.

31. The method of claim 30, wherein,

32. The method of claim 31 wherein the modified set of product coefficients is obtained by dividing parameters in the set of product coefficients by preset parameters.

33. The method of claim 23, wherein, in the case where zero is not included in the set of parameters and the first parameter is equal to zero, the method further comprises:

34. The method of claim 24, wherein, in the case where zero is not included in the set of parameters and the first parameter is equal to zero, the method further comprises:

35. The method of claim 28, wherein, in the case where zero is not included in the set of parameters and the first parameter is equal to zero, the method further comprises:

36. The method of claim 29, wherein, in the case where zero is not included in the set of parameters and the first parameter is equal to zero, the method further comprises:

37. The method of claim 25, further comprising, in the case where 1 is not included in the set of parameters and the first parameter is equal to 1:

38. The method of claim 26, wherein, in the case that 1 is not included in the set of parameters and the first parameter is equal to 1, the method further comprises:

39. The method of claim 30, further comprising, in the case where 1 is not included in the set of parameters and the first parameter is equal to 1:

40. A terminal device, comprising:

the parameter determining module is used for determining a first parameter according to a preset parameter set;

a sending module, configured to send CSI, where the CSI includes the first parameter, and the first parameter is used for obtaining, by a network device, a CSI parameter value according to the first parameter;

the CSI parameter value and the second parameter include at least one of:

41. A network device, comprising:

the receiving module is used for receiving the CSI, wherein the CSI comprises a first parameter which is determined by the terminal equipment according to a preset parameter set;

the parameter determining module is used for obtaining a CSI parameter value according to the first parameter;

the CSI parameter value and the second parameter include at least one of:

42. A terminal device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the method of indicating CSI parameters according to any of claims 1 to 20.

43. A network device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method of indicating CSI parameters according to any of claims 21 to 39.

44. A computer-readable storage medium, on which a computer program is stored, which when being executed by a processor implements the steps of the CSI parameter indicating method according to any of claims 1 to 39.