CN111435853A - CSI parameter indication method and device - Google Patents

Abstract

Embodiments of the present invention disclose a method and device for indicating CSI parameters of channel state information, which are used to solve the transmission problem caused by inconsistent understanding of CSI parameters between terminal equipment and network equipment. The above method is performed by a terminal device, and includes: determining a first parameter according to a preset parameter set; sending CSI, where the CSI includes the first parameter, and the first parameter is used by the network device to obtain the CSI according to the first parameter parameter value.

Description

CSI parameter indication method and device

technical field

The embodiments of the present application relate to the field of communications, and in particular, to a method and device for indicating a channel state information (Channel State Information, CSI) parameter.

Background technique

New Radio (NR, NR) Rel-15 enhances the CSI feedback of the terminal equipment, and there are two types of CSI feedback, Type I and Type II. The terminal device may need to report CSI parameters such as Number of Non-Zero Coefficients Indication (NNZCI) during CSI feedback. In the related art, there is no relevant solution for reporting CSI parameters, which may cause transmission problems between terminal equipment and network equipment due to inconsistent understanding of CSI parameters, affecting the effectiveness of communication. Therefore, it is necessary to provide relevant solutions for CSI parameter reporting.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a method and device for indicating CSI parameters, so as to solve the transmission problem caused by inconsistent understanding of CSI parameters between a terminal device and a network device.

A first aspect provides a method for indicating CSI parameters, the method is performed by a terminal device, and the method includes: determining a first parameter according to a preset parameter set; sending CSI, where the CSI includes the first parameter , the first parameter is used by the network device to obtain the CSI parameter value according to the first parameter.

In a second aspect, a method for indicating a CSI parameter is provided, the method is performed by a network device, and the method includes: receiving CSI, where the CSI includes a first parameter, and the first parameter is preset by the terminal device according to the The parameter set is determined; the CSI parameter value is obtained according to the first parameter.

In a third aspect, a terminal device is provided, the terminal device includes: a parameter determination module, configured to determine a first parameter according to a preset parameter set; a sending module, configured to send CSI, where the CSI includes the first parameter , the first parameter is used by the network device to obtain the CSI parameter value according to the first parameter.

In a fourth aspect, a network device is provided, the network device includes: a receiving module configured to receive CSI, where the CSI includes a first parameter, and the first parameter is determined by the terminal device according to a preset parameter set; the parameter A determining module, configured to obtain a CSI parameter value according to the first parameter.

In a fifth aspect, a terminal device is provided, the terminal device includes a processor, a memory, and a computer program stored on the memory and executable on the processor, when the computer program is executed by the processor The steps of implementing the CSI parameter indication method according to the first aspect.

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

In a seventh aspect, a computer-readable storage medium is provided, and a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the CSI parameters according to the first aspect and the second aspect are implemented. Indicates the steps of the method.

In this embodiment of the present invention, the terminal device may determine the first parameter according to a preset parameter set; and the sent CSI includes the above-mentioned first parameter, so that the network device can obtain the CSI parameter value according to the first parameter, avoiding the need for the terminal to Transmission problems are caused by inconsistent understanding of CSI parameters between devices and network devices, and communication effectiveness is improved.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the attached image:

FIG. 1 is a schematic flowchart of a method for indicating a CSI parameter according to an embodiment of the present invention;

2 is a schematic flowchart of a method for indicating a CSI parameter according to another embodiment of the present invention;

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

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

5 is a schematic structural diagram 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 ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

It should be understood that the technical solutions in the embodiments of the present invention can be applied to various communication systems, such as: 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), Universal Mobile Telecommunication System (UMTS) or Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5G system, or New Radio (NR) system, Or for the subsequent evolution of the communication system.

In this embodiment of the present invention, the terminal equipment may include, but is not limited to, a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile telephone (Mobile Telephone), a user equipment (User Equipment, UE), a mobile phone (handset) and Portable equipment (portable equipment), vehicle (vehicle), etc., the terminal equipment can communicate with one or more core networks via a radio access network (Radio Access Network, RAN), for example, the terminal equipment can be a mobile phone (or The terminal device may also be a portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted mobile device.

In this embodiment of the present invention, a network device is a device deployed in a wireless access network to provide a wireless communication function for a terminal device. The network device may be a base station, and the base station may include various forms of macro base station, micro base station, relay station, access point, and the like. In systems with different radio access technologies, the names of devices with base station functions may vary. For example, in an LTE network, it is called an evolved NodeB (Evolved NodeB, eNB or eNodeB), and in a 3rd Generation (3G) network, it is called a Node B (Node B), or in a subsequent evolved communication system. Network equipment, etc., however the use of words does not constitute a limitation.

As mentioned above, there are two types of CSI feedback: Type I (Type I) and Type II (Type II). The Type II CSI report can be a two-level codebook structure of W1*W2, where: W1 is broadband information, including: (1) the index of the orthogonal beam group where the selected orthogonal beam is located, (2) the selected orthogonal beam is located in the positive The index in the cross beam group, (3) the orthogonal beam index corresponding to the strongest combining coefficient of each layer, and (4) the amplitude quantization value of the broadband combining coefficient of each layer. W2 is the subband information. If the amplitude quantization is configured as wideband quantization, it includes: (1) The phase angle quantization value of the non-zero combination coefficients of each layer on each subband; if the amplitude quantization is configured as subband quantization, W2 also includes: (2) The ratio quantization value of the non-zero combination coefficient of each layer on each subband to the wideband amplitude quantization value

Type II CSI feedback is divided into Part 1 and Part 2: Part 1 has a fixed load size, including Rank Indication (Rank Indication, RI), Channel Quality Indicator (Channel Quality Indicator, CQI), and the non-zero amplitude coefficient of each layer of broadband The number of indications; Part 2 contains the precoding matrix indication (Precoding MatrixIndicator, PMI). Part 1 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 a dimension of 2LM, and the NR system provides a further compression method. Usually, the terminal device only needs to feed back K ₀ coefficients, where K ₀ <2LM, for K ₀ in the compression coefficient matrix The coefficients other than the coefficients are considered to be 0, and the terminal equipment does not feed back them.

However, if the non-zero coefficient in 2LM (or the coefficient that the terminal device considers to be fed back) is K ₁ (where K ₁ <K ₀ ), the terminal device only needs to feed back K ₁ coefficients. Therefore, the indication information of the feedback coefficient K1 is required in part ₁ to indicate the number of feedback coefficients, but the related art does not provide a relevant solution for reporting CSI parameters (eg, the above-mentioned number of coefficients).

β目前的可选值是从集合{1/8，1/4，1/2，3/4}中挑选两个，L 为宽带beam的数量，M为挑选的离散傅立叶变换(Discrete Fourier Transfom， DFT)基向量的数量。Optionally, the above K ₀ may be configured by a network device, and the method indicated by the network device is:

The current optional value of β is to select two from the set {1/8, 1/4, 1/2, 3/4}, L is the number of broadband beams, M is the selected Discrete Fourier Transform (Discrete Fourier Transform, DFT) number of basis vectors.

In order 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: Determine the first parameter according to a preset parameter set.

Before the implementation of the embodiment of the present invention, the network device may configure the parameter K ₀ for the terminal device. If the parameters of each layer (layer) are the same, the network device may be configured with only one value; if the parameters of each layer (layer) are different, the network device may be configured with multiple values. The form of K ₀ mentioned here can be a specific value; it can also be the product of multiple parameters.

In this embodiment of the present invention, if the terminal device considers that the number of coefficients to be fed back is less than or equal to the above K ₀ , step S102 may be executed, that is, the first parameter is determined according to a preset parameter set. The determined first parameter may specifically be a parameter in the above-mentioned parameter set, or a value obtained according to the parameters in the parameter set. For example, if the parameter set includes the exponential power parameter a ^b , the exponential power parameter a ^b may be used. The index b as is the first parameter.

It should be noted that the parameters mentioned in the various embodiments of the present invention, for example, the first parameter, the parameters in the parameter set, etc., can be understood as specific numerical values.

Optionally, the above-mentioned parameter set may be configured by a network device; or agreed by a protocol; or configured by a terminal device. If the above parameter set is configured by the terminal device, the terminal device can also report the parameter set, and the parameter set can be specifically carried in the CSI part2.

S104: Send CSI, where the CSI includes the first parameter.

The above-mentioned first parameter is used by the network device to obtain the CSI parameter value according to the first parameter. Optionally, the above-mentioned first parameter is used by the network device to obtain the CSI parameter value according to the first parameter and the second parameter. For example, the network device may use the difference between the first parameter and the second parameter as the CSI parameter value; or, when the first parameter is the exponent ^b of the power exponent a b, the network device may use the difference between the first parameter and the power exponent a ^b as the value of the CSI parameter CSI parameter value, etc. How the network device obtains the CSI parameter value according to the first parameter will be described in detail in multiple embodiments later.

The second parameter mentioned here may specifically be the parameter K ₀ mentioned above and configured by the network device for the terminal device.

Optionally, the above-mentioned CSI parameter value and the second parameter include at least one of the following: the number of non-zero coefficients NZC fed back by the terminal device and the preset number of NZC; the discrete Fourier transform (Discrete FourierTransfom, DFT) fed back by the terminal device The number of basis vectors and the preset number of DFT basis vectors; and the number of inverse discrete Fourier transform (Inverse Discrete Fourier Transform, IDFT) basis vectors fed back by the terminal device and the number of preset IDFT basis vectors.

It can be understood that when the CSI parameter value is the number of NZCs fed back by the terminal equipment, correspondingly, the preset parameter sets mentioned in step S102 are all related to the non-zero coefficient NZC; the CSI parameter value is the DFT basis vector fed back by the terminal equipment. , correspondingly, the preset parameter sets mentioned in step S102 are all related to the DFT basis vector; and so on.

In the method for indicating CSI parameters provided by the embodiments of the present invention, the terminal device can determine the first parameter according to the preset parameter set; and the sent CSI includes the above-mentioned first parameter, so that the network device can obtain the CSI according to the first parameter The parameter value can avoid transmission problems caused by inconsistent understanding of CSI parameters between terminal equipment and network equipment, and improve communication effectiveness.

Optionally, as an embodiment, determining the first parameter according to the preset parameter set mentioned in step S102 of the foregoing embodiment includes: selecting the first parameter from the parameter set. The form of the parameter set is for example {b ₁ ,b ₂ ,...,b _i ,}, where b _i is an integer, and i in the lower right corner represents the serial number. Specifically, the terminal device can select an appropriate parameter from the parameter set as the first parameter according to the CSI parameter value and feed it back to the network device, so that the network device can obtain the obtained parameter according to the difference between the second parameter and the first parameter. the value of the CSI parameter described above. When the CSI parameter value is the number of NZCs, the second parameter may specifically be the parameter K ₀ mentioned above and configured by the network device for the terminal.

In this embodiment, if the parameter set does not include zero and the first parameter is equal to zero, the terminal device may further indicate the first parameter (zero) by means of an implicit indication, and this condition In this case, 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 is the same as the preset number of NZCs.

In this embodiment, the value of the first parameter fed back by the terminal device is usually much smaller than the difference between the second parameter and the first parameter, which can save signaling overhead.

该参数集合中同时包括有零和指数幂参数，其中，n为非负整数，可以是由网 络设备配置或协议约定，b_i为整数，i表示序号。这样，在步骤S102中提到的 根据预设的参数集合确定第一参数包括：Optionally, as an embodiment, the parameter set mentioned in step S102 of the foregoing embodiment includes at least one of zero and exponential power parameters, and the parameter set is in the form of, for example,

The parameter set includes both zero and exponential power parameters, where n is a non-negative integer, which may be configured by a network device or a protocol agreement, b _i is an integer, and i represents a serial number. In this way, determining the first parameter according to the preset parameter set mentioned in step S102 includes:

1) select target parameter from described parameter set, target parameter is one in parameter set;

)，则将所述目标参数的指数(例 如b_i)作为所述第一参数；或，若所述目标参数是零，则将所述目标参数零作 为所述第一参数。2) If the target parameter is an exponential power parameter (eg

), the index of the target parameter (eg, b _i ) is used as the first parameter; or, if the target parameter is zero, the target parameter zero is used as the first parameter.

)的情况下，网络 设备可以根据所述第二参数和所述目标参数的差得到CSI参数值。In this way, when the first parameter is equal to zero, the CSI parameter value is equal to the second parameter, and the network device may directly use the value of the second parameter as the CSI parameter value. Alternatively, in the case where the first parameter is not equal to zero, that is, the target parameter is an exponential power parameter (eg

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

In this embodiment, if the parameter set does not include zero and the first parameter is equal to zero, the terminal device may further indicate the first parameter (zero) by means of an implicit indication, and this condition In this case, 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 is the same as the preset number of NZCs.

In this embodiment, the value of the first parameter fed back by the terminal device is usually much smaller than the difference between the second parameter and the target parameter, which can save signaling overhead.

Optionally, as an embodiment, determining the first parameter according to the preset parameter set mentioned in step S102 of the foregoing embodiment includes: selecting the first parameter from the parameter set. In this embodiment, the parameter set is in the _form of {b ₁ , _{b 2} , . Specifically, the terminal device can select an appropriate parameter from the parameter set as the first parameter according to the CSI parameter value and feed it back to the network device, so that the network device can round up or round up according to the product of the second parameter and the first parameter. The CSI parameter value is obtained by rounding down.

In this embodiment, if the parameter set does not include 1 and the first parameter is equal to 1, the terminal device may also indicate the first parameter (1) by means of an implicit indication, the Under certain conditions, 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 is the same as the preset number of NZCs.

In this embodiment, the value of the first parameter fed back by the terminal device is usually much smaller than the product of the second parameter and the first parameter, which can save signaling overhead.

其中，n 可以是协议约定的固定值，也可以由终端设备反馈；或者是由终端设备隐式指 示。这样，在步骤S102中提到的根据预设的参数集合确定第一参数包括：Optionally, as an embodiment, the parameter set mentioned in step S102 of the above-mentioned embodiment includes parameters whose denominator is an exponential power, and the form of the parameter set is, for example,

Wherein, n may be a fixed value agreed in the protocol, or may be fed back by the terminal device; or it may be indicated implicitly by the terminal device. In this way, determining the first parameter according to the preset parameter set mentioned in step S102 includes:

)；1) Select the target parameter from the parameter set (eg,

);

作为所述第一参数；或，将所述目标参数

的分母 的指数b_i作为所述第一参数；2) Set the target parameter

as the first parameter; or, the target parameter

The exponent _bi of the denominator is taken as the first parameter;

的乘积向上取整或向下取 整得到CSI参数值。In this way, the network device can

The product of is rounded up or down to get the CSI parameter value.

的分母的底数n，具体地，参数集合中所有 参数分母的底数n均相等。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 n of the denominator of , specifically, the base n of the denominators of all parameters in the parameter set are the same.

In this embodiment, if the parameter set does not include 1 and the first parameter is equal to 1, the terminal device may also indicate the first parameter (1) by means of an implicit indication, the Under certain conditions, 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 is the same as the preset number of NZCs.

的乘积，能够节约信令开销。In this embodiment, the value of the first parameter fed back by the terminal device is usually much smaller than the second parameter and the target parameter

The product of , can save signaling overhead.

其中，β可以称作是乘积系 数，2LM的值可以称作是第三参数，第三参数可以是该处的多个参数乘积的形 式，也可以是一个定值。该实施例中参数集合的形式例如{b₁,b₂,…,b_i,},其中， b_i为整数，右下角的i表示序号。Optionally, as an embodiment, the second parameter configured by the network device is obtained according to the product of the product coefficient and the third parameter, for example, the second parameter

Among them, β can be referred to as a product coefficient, the value of 2LM can be referred to as a third parameter, and the third parameter can be in the form of the product of multiple parameters there, or can be a fixed value. The form of the parameter set in this embodiment is, for _example , _{ b ₁ , b ₂ , .

In this way, the determining of the first parameter according to the preset parameter set mentioned in step S102 of the above embodiment includes: selecting the first parameter from the parameter set. Specifically, the terminal device may select an appropriate parameter from the parameter set as the first parameter according to the CSI parameter value and feed it back to the network device, so that the network device may, according to the difference between the product coefficient and the first parameter, combine the The product of the third parameter is rounded up or down to obtain the CSI parameter value. For details, refer to the following formula:

表示向上取整。In this formula, K ₁ represents the CSI parameter value; β represents the 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

Indicates rounded up.

In this embodiment, if the parameter set does not include zero and the first parameter is equal to zero, the terminal device may further indicate the first parameter (zero) by means of an implicit indication, and this condition In this case, 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 is the same as the preset number of NZCs.

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

其中，n为非负整数，可以是由网络设备配置或协议约定，b_i为整数，i表示序 号。所述第二参数根据乘积系数和第三参数的乘积得到(参见上一个实施例)， 这样，在步骤S102中提到的根据预设的参数集合确定第一参数包括：Optionally, as an embodiment, the parameter set mentioned in step S102 of the foregoing embodiment includes at least one of zero and exponential power parameters, and the parameter set is in the form of, for example,

Among them, n is a non-negative integer, which can be configured by a network device or a protocol agreement, b _i is an integer, and i represents a serial number. The second parameter is obtained according to the product of the product coefficient and the third parameter (refer to the previous embodiment), thus, determining the first parameter according to the preset parameter set mentioned in step S102 includes:

1) Select a target parameter from the parameter set, and the target parameter can be zero or

)，则将所述目标参数的指数(例 如b_i)作为第一参数；或，若所述目标参数是零，则将所述目标参数另作为所 述第一参数。2) If the target parameter is an exponential power parameter (eg

), the index of the target parameter (eg, b _i ) is used as the first parameter; or, if the target parameter is zero, the target parameter is additionally used as the first parameter.

In this way, when the first parameter is equal to zero, the CSI parameter value is equal to the second parameter, and the network device may directly use the value of the second parameter as the CSI parameter value. Alternatively, in the case where the first parameter is not equal to zero, that is, in the case where the first parameter is an exponential power parameter, the network device may, according to the difference between the product coefficient and the target parameter, combine the third parameter with the The product of , rounded up or rounded down can be obtained. For details, please refer to the following formula:

是终端设备反馈 的第一参数所对应的目标参数，b_i是第一参数，2LM是第三参数，公式中的符 号

表示向上取整。In this formula, K ₁ represents the CSI parameter value; β represents the product coefficient;

is the target parameter corresponding to the first parameter fed back by the terminal device, b _i is the first parameter, 2LM is the third parameter, the symbol in the formula

Indicates rounded up.

In this embodiment, if the parameter set does not include zero and the first parameter is equal to zero, the terminal device may further indicate the first parameter (zero) by means of an implicit indication, and this condition In this case, 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 is the same as the preset number of NZCs.

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

其中，β可以称作是乘积系 数，2LM的值可以称作是第三参数，第三参数可以是该处的多个参数乘积的形 式，也可以是一个定值。参数集合的形式例如{b₁,b₂,…,b_i,},其中，b_i为整数， 右下角的i表示序号。这样，在上述实施例的步骤S102中提到的根据预设的参 数集合确定第一参数包括：从所述参数集合中选取第一参数。具体地，终端设 备可以根据CSI参数值从参数集合中选取合适的参数作为第一参数并反馈给网 络设备，这样，网络设备即可根据所述第一参数与所述第三参数的乘积向上取 整或向下取整得到所述CSI参数值，具体可以参见下述公式：Optionally, as an embodiment, the second parameter configured by the network device is obtained according to the product of the product coefficient and the third parameter, for example, the second parameter

Among them, β can be referred to as a product coefficient, the value of 2LM can be referred to as a third parameter, and the third parameter can be in the form of the product of multiple parameters there, or can be a fixed value. The format of the parameter set is for example {b ₁ ,b ₂ ,...,b _i ,}, where b _i is an integer, and i in the lower right corner represents a serial number. In this way, determining the first parameter according to the preset parameter set mentioned in step S102 of the above embodiment includes: selecting the first parameter from the parameter set. Specifically, the terminal device can select an appropriate parameter from the parameter set as the first parameter according to the CSI parameter value and feed it back to the network device, so that the network device can take the upper parameter according to the product of the first parameter and the third parameter. The CSI parameter value can be obtained by rounding or rounding down. For details, please refer to the following formula:

表示向上取整。In this formula, K ₁ represents 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

Indicates rounded up.

Optionally, the parameters in the parameter set in this embodiment are all the same or partially the same as the parameters in the target parameter set; wherein, the target parameter set includes: a set of product coefficients (above β) of the second parameter, Or a modified set of product coefficients obtained after the set of product coefficients is modified. The modified set of product coefficients may be obtained by dividing all parameters in the set of product coefficients by preset parameters.

In this way, before step S102 of the embodiment shown in FIG. 1 , the following step may be further included: removing parameters greater than 1 in the modified set of product coefficients.

In this embodiment, if the parameter set does not include 1 and the first parameter is equal to 1, the terminal device may also indicate the first parameter (1) by means of an implicit indication, the Under certain conditions, 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 is the same as the preset number of NZCs.

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

In order to describe in detail the method for indicating the CSI parameters provided by the embodiments of the present invention, the following will introduce several specific implementation examples.

其中， β可以称作是乘积系数，2LM的值可以称作是第三参数，公式中的符号

表 示向上取整。可以理解，向下取整与向上取整类似，同样也适用于本发明的各 个实施例，在此不再重复描述。Referring to the following Embodiment 1 to Embodiment 7, the relevant embodiments in which the CSI parameter is the number of non-zero coefficients NNZC are specifically introduced. In Embodiment 1 to Embodiment 7, the NNZCI indicated

Among them, β can be called the product coefficient, the value of 2LM can be called the third parameter, the symbol in the formula

Indicates rounded up. It can be understood that rounding down is similar to rounding up, and is also applicable to various embodiments of the present invention, and the description is not repeated here.

Example 1: Linear Differential Feedback

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

The protocol stipulates that the difference set (that is, the parameter set mentioned in the foregoing several embodiments) is {1, 3/4, 1/2, 1/4}.

The terminal feeds back the NNZCI, for example, 00 may indicate that the value of the feedback is 1, 01 may indicate that the value of the feedback is 3/4, 10 may indicate that the value of the feedback is 1/2, and 11 may indicate that the value of the feedback is 1/4. The embodiment does not limit the order of combination.

If the selected value in the difference set indicated by the NNZCI is 1 (corresponding to the first parameter in the previous embodiments, the following is the same), then the number of the 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 3/4×1/2×θ and the result is rounded up;

If the selected value in the difference set indicated by the NNZCI is 1/2, the number of the non-zero coefficients is 1/2×1/2×θ and the result is rounded up;

If the selected value in the difference set indicated by the NNZCI is 1/4, then the number of non-zero coefficients is 1/4 x 1/2 x θ and the result is rounded up.

Example 2: Linear Differential Feedback

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

The terminal feeds back NNZCI, 0 may indicate that the value of the feedback is 1/2; 1 may indicate that the value of the feedback is 1, and vice versa.

If the selected value in the difference set indicated by the NNZCI is 1/2, the number of the non-zero coefficients is 1/2×1/2×θ and the result is rounded up;

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

Example 3: Linear Differential Feedback

In this embodiment, the product coefficient β candidate set is {1/8, 1/4, 1/2, 3/4}, the indication information of the network configuration β indicates that the product coefficient is 1/2, and the agreed difference set at this time , which may be the difference set obtained by dividing the candidate set of the product coefficient β by β (ie, the parameter set mentioned in the foregoing several embodiments), specifically {1/4, 1/2, 1, 3/2}. Optionally, this embodiment may also pre-agreed to remove the value greater than 1 in the difference set, that is, remove the parameter 3/2, and the parameter difference set is {1/4, 1/2, 1}

When the terminal equipment feeds back NNZCI, 00 may indicate that the value of the feedback is 1/4, 01 may indicate that the value of the feedback is 1/2, and 10 may indicate that the value of the feedback is 1. Optionally, if 3/2 is not removed, 11 may be used to indicate that the value of the feedback is 3/2, and the order of combination is not limited.

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

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

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

Optionally, 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 number of non-zero coefficients is the largest The value is 1×1/2×θ.

Embodiment 4: Linear Differential Feedback

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

The difference set (that is, the parameter set mentioned in the previous several embodiments) is the same as the candidate set of the product coefficient β, that is, it is also {1/4, 1/2}.

The terminal feeds back NNZCI, 0 may indicate that the value of the feedback is 1/4, and 1 may indicate that the value of the feedback is 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×θ and the result is rounded up;

If the selected value within the set indicated by the NNZCI is 1/2, then the number of non-zero coefficients is 1/2 x θ and the result is rounded up.

Embodiment 5: Linear Differential Feedback

In this embodiment, the candidate set of the multiplication coefficient β is {1/4, 1/2}, the indication information of the network device configuration β indicates that the multiplication coefficient is 1/2, the difference set in this embodiment (that is, the preceding several The parameter set mentioned in the embodiment) is {1/8, 1/4}.

The terminal equipment feeds back NNZCI, 0 may indicate that the feedback value is 1/8; 1 may indicate that the feedback value is 1/4. 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×θ and the result is rounded up;

If the selected value in the difference set indicated by the NNZCI is 1/4, then the number of non-zero coefficients is 1/4 x θ and the result is rounded up.

Embodiment 6: Linear difference feedback

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

The difference set in this embodiment (that is, the parameter set mentioned in the previous several embodiments) is {0, 1, 3, 5}.

The terminal equipment feeds back NNZCI, 00 may indicate the feedback value is 0; 01 may indicate the feedback value is 1; 10 may indicate the feedback value is 3; 11 may indicate the feedback value is 5. The indication method of the above parameters is not limited to this. For example, 00 can also be used to indicate that the feedback value is 5, 01 indicates that the feedback value is 3, 10 indicates that the feedback value is 1, and 11 indicates that the feedback value is 0, etc. Wait.

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

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

If the selected value in the set indicated by the NNZCI is 3, the number of the non-zero coefficients is 1/2×θ-3 and the result is rounded up;

If the selected value in the set indicated by the NNZCI is 5, the number of the non-zero coefficients is 1/2×θ-5 and the result is rounded up;

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

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

Embodiment 7: Exponential difference feedback

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

The exponent difference set in this embodiment (ie, the parameter set mentioned in the foregoing several embodiments) is {0, 2 ¹ , 2 ² , 2 ³ }, and the base of the exponent power is n=2.

The terminal feeds back NNZCI, 00 can represent the value of the feedback 0, 01 can represent the value of the feedback 1, 10 can represent the value of the feedback 2, 11 can represent the value of the feedback 3, the order of the above combination is not limited to this .

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

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

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

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

Referring to the following eighth and ninth embodiments, the relevant embodiments in which the CSI parameter is the number of DFT basis vectors are specifically introduced.

N_length是由子带数和 预设参数等确定，N_length对应前文几个实施例中的第三参数。ρ∈{1/4，1/2}，ρ 对应前文几个实施例中的乘积系数。公式中的符号

表示向上取整。可以理 解，向下取整与向上取整类似，在此不再重复描述In the eighth and ninth embodiments, the network device indicates

N _length is determined by the number of subbands, preset parameters, etc., and N _length corresponds to the third parameter in the foregoing embodiments. ρ∈{1/4, 1/2}, ρ corresponds to the product coefficients in the foregoing embodiments. symbols in formulas

Indicates rounded up. It can be understood that rounding down is similar to rounding up, and the description will not be repeated here.

Embodiment 8: Linear differential feedback

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

The difference set (that is, the parameter set mentioned in the previous several embodiments) is the same as the candidate set of the product coefficient ρ.

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

If the selected value in the indicated set is 1/4, the number of DFT basis vectors fed back by the terminal is 1/4×N _length and the result is rounded up;

If the selected value in the indicated set is 1/2, the number of DFT basis vectors fed back by the terminal is 1/2×N _length and the result is rounded up.

Embodiment 9: Linear difference feedback

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

The difference set (ie, the parameter set mentioned in the foregoing several embodiments) is {0, 1, 3, 5}.

The terminal equipment feedbacks the difference information indication, 00 can indicate the feedback value is 0, 01 can indicate the feedback value is 1, 10 can indicate the feedback value is 3, 11 can indicate the feedback value is 5, and the order of combination is not limited.

If the selected value in the set indicated by the difference information is 0, the number of DFT basis vectors fed back by the terminal is 1/2×N _length -0 and the result is rounded up;

If the selected value in the set indicated by the difference information is 1, the number of DFT basis vectors fed back by the terminal is 1/2×N _length -1 and the result is rounded up;

If the selected value in the set indicated by the difference information is 3, the number of DFT basis vectors fed back by the terminal is 1/2×N _length -3 and the result is rounded up;

If the selected value in the set indicated by the difference information is 5, the number of the non-zero coefficients is 1/2×N _length -5 and the result is rounded up.

The method for indicating a CSI parameter according to an embodiment of the present invention has been described in detail above with reference to FIG. 1 and subsequent embodiments. A method for indicating a CSI parameter according to another embodiment of the present invention will be described in detail below with reference to FIG. 2 . It can be understood that the interaction between the network device and the terminal device described from the network device side is the same as the description on the terminal device side in the method shown in FIG. 1, and to avoid repetition, relevant descriptions are appropriately omitted.

Fig. 2 is a schematic flowchart of the implementation of a method for indicating a CSI parameter according to an embodiment of the present invention, which can be applied to a network device side. As shown in Figure 2, the method 200 includes:

S202: Receive CSI, where the CSI includes a first parameter.

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

S204: Obtain a CSI parameter value according to the first parameter.

In the method for indicating CSI parameters provided by the embodiments of the present invention, the terminal device can determine the first parameter according to the preset parameter set; and the sent CSI includes the above-mentioned first parameter, so that the network device can obtain the CSI according to the first parameter The parameter value can avoid transmission problems caused by inconsistent understanding of CSI parameters between terminal equipment and network equipment, and improve communication effectiveness.

Optionally, as an embodiment, the obtaining the CSI parameter value according to the first parameter includes: obtaining the 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 following:

The number of non-zero coefficients NZC fed back by the terminal device and the preset number of NZC;

The number of discrete Fourier transform DFT basis vectors fed back by the terminal equipment and the number of preset DFT basis vectors; and

The number of inverse discrete Fourier transform IDFT basis vectors fed back by the terminal device and the number of preset IDFT basis vectors.

Optionally, as an embodiment, the parameter set is obtained in the following manner:

configured by the network device; or

as agreed; or

configured by the terminal device.

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

The CSI parameter value is obtained 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 exponential power parameters, and the obtaining the CSI parameter value according to the first parameter and the second parameter includes:

where the first parameter is equal to zero, the second parameter is equal to the CSI parameter value; or

In the case that the first parameter is not equal to zero, obtain the CSI parameter value according to the difference between the second parameter and the target parameter;

The target parameter is selected by the terminal device from the parameter set, and in the case that the target parameter is an exponential power parameter, the terminal device takes the index of the target parameter as the first parameter ; or when the target parameter is zero, the terminal device uses the target parameter as the first parameter.

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

The CSI parameter value is obtained by rounding up or 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 exponential power, and the obtaining the CSI parameter value according to the first parameter and the second parameter includes:

Round up or down according to the product of the second parameter and the target parameter to obtain the CSI parameter value;

The target parameter is selected by the terminal device from the parameter set, and the terminal device takes the target parameter as the first parameter; or takes the index of the denominator of the target parameter as the target parameter first parameter.

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

The base of the denominator of the target parameter is determined according to the indication information.

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

According to the difference between the product coefficient and the first parameter, the product with the third parameter is rounded up or down to obtain the CSI parameter value;

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

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

where the first parameter is equal to zero, the second parameter is equal to the CSI parameter value; or

In the case 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 third parameter is rounded up or down to obtain the CSI parameter value;

The target parameter is selected by the terminal device from the parameter set, and in the case that the target parameter is an exponential power parameter, the terminal device takes the index of the target parameter as the first parameter ; or, in the case that the target parameter is zero, the terminal device uses the target parameter as the first parameter.

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

The CSI parameter value is obtained by rounding up or 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 target parameter set includes: a product coefficient set of the second parameter, or a modified product coefficient set obtained by modifying the product coefficient set.

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

Optionally, as an embodiment, when the parameter set does not include zero and the first parameter is equal to zero, the method further includes:

The first parameter is determined, wherein the first parameter is indicated by the terminal device by means of an implicit indication.

Optionally, as an embodiment, when the parameter set does not include 1 and the first parameter is equal to 1, the method further includes:

The first parameter is determined, wherein the first parameter is indicated by the terminal device by means of an implicit indication.

The method for indicating a CSI parameter according to an embodiment of the present invention has been described in detail above with reference to FIG. 1 to FIG. 2 . The terminal device according to the 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 Figure 3, the terminal device 300 includes:

A parameter determination module 302, which can be configured to determine the 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 by the network device to obtain the CSI parameter value according to the first parameter.

In the terminal device provided by the embodiment of the present invention, the first parameter can be determined according to a preset parameter set; and the sent CSI includes the above-mentioned first parameter, so that the network device can obtain the CSI parameter value according to the first parameter, so as to avoid the terminal Transmission problems are caused by inconsistent understanding of CSI parameters between devices and network devices, and communication effectiveness is improved.

Optionally, as an embodiment, the first parameter is used by the network device to obtain the 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 following:

The number of non-zero coefficients NZC fed back by the terminal device and the preset number of NZC;

The number of discrete Fourier transform DFT basis vectors fed back by the terminal equipment and the number of preset DFT basis vectors; and

The number of inverse discrete Fourier transform IDFT basis vectors fed back by the terminal device and the number of preset IDFT basis vectors.

Optionally, as an embodiment, the parameter set is obtained in the following manner:

configured by the network device; or

as agreed; or

configured by the terminal device.

Optionally, as an embodiment, the above parameter determination module 302 may be specifically used for:

selecting a first parameter from the parameter set;

Wherein, the CSI parameter value is obtained 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 exponential power parameters, and the above-mentioned parameter determination module 302 can be specifically configured to: select a target parameter from the parameter set;

if the target parameter is an exponential power parameter, the exponent of the target parameter is used as the first parameter; or

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

wherein, when the first parameter is equal to zero, the CSI parameter value is equal to the second parameter; or

In the case that the first parameter is not equal to zero, the CSI parameter value is obtained according to the difference between the second parameter and the target parameter.

Optionally, as an embodiment, the above parameter determination module 302 may be specifically used for:

selecting a first parameter from the parameter set;

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

Optionally, as an embodiment, the parameter set includes parameters whose denominators are exponents, and the above parameter determination module 302 can be specifically used for:

selecting target parameters from the parameter set;

Taking the target parameter as the first parameter; or, taking the index of the denominator of the target parameter as the first parameter;

Wherein, the CSI parameter value is obtained by rounding up or rounding down 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 the base of the 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 above-mentioned parameter determination module 302 can be specifically used for:

selecting a first parameter from the parameter set;

Wherein, the CSI parameter value is obtained according to the difference between the product coefficient and the first parameter, and then the product of the product and the third parameter is rounded up or rounded down.

Optionally, as an embodiment, the parameter set includes at least one of zero and exponential power parameters, 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: Used for:

selecting target parameters from the parameter set;

If the target parameter is an exponential power parameter, the index of the target parameter is used as the first parameter; or, if the target parameter is zero, the target parameter is used as the first parameter;

wherein, when the first parameter is equal to zero, the CSI parameter value is equal to the second parameter; or

In the case where the first parameter is not equal to zero, the CSI parameter value is obtained by rounding up or rounding down the product of the third parameter and the difference between the multiplication coefficient and 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 above-mentioned parameter determination module 302 can be specifically used for:

selecting a first parameter from the parameter set;

Wherein, the CSI parameter value is obtained by rounding up or rounding down 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 target parameter set includes: a set of product coefficients of the second parameter, or all The modified set of product coefficients obtained after the set of product coefficients is modified.

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

Optionally, as an embodiment, the above parameter determination module 302 can also be used to:

Parameters greater than 1 in the modified set of product coefficients are removed.

Optionally, as an embodiment, when the parameter set does not include zero and the first parameter is equal to zero, the above-mentioned sending module 304 can also be used to:

The first parameter is indicated by means of implicit indication.

Optionally, as an embodiment, when the parameter set does not include 1, and the first parameter is equal to 1, the above-mentioned sending module 304 can also be used for:

The first parameter is indicated by means of implicit indication.

The terminal device 300 according to the embodiment of the present invention may refer to the process of the method 100 corresponding to the embodiment of the present invention, and each unit/module and the above-mentioned other operations and/or functions in the terminal device 300 are respectively for the purpose of implementing the corresponding steps in the method 100. The process, for the sake of brevity, will not be repeated here.

FIG. 4 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in Figure 4, network device 400 includes:

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

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

In the network device provided by the embodiment of the present invention, the terminal device determines the first parameter according to the preset parameter set; and the sent CSI includes the above-mentioned first parameter, so that the network device can obtain the CSI parameter value according to the first parameter, avoiding Transmission problems are caused by inconsistent understanding of CSI parameters between terminal equipment and network equipment, and communication effectiveness is improved.

Optionally, as an embodiment, the above-mentioned parameter determination module 404 may be specifically configured to: obtain 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 following:

The number of non-zero coefficients NZC fed back by the terminal device and the preset number of NZC;

The number of discrete Fourier transform DFT basis vectors fed back by the terminal equipment and the number of preset DFT basis vectors; and

The number of inverse discrete Fourier transform IDFT basis vectors fed back by the terminal device and the number of preset IDFT basis vectors.

Optionally, as an embodiment, the parameter set is obtained in the following manner:

configured by the network device; or

as agreed; or

configured by the terminal device.

Optionally, as an embodiment, the first parameter is selected by the terminal device from the parameter set, and the above-mentioned parameter determination module 404 can be specifically used for:

The CSI parameter value is obtained 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 exponential power parameters, and the above-mentioned parameter determination module 404 can be specifically used for:

where the first parameter is equal to zero, the second parameter is equal to the CSI parameter value; or

In the case that the first parameter is not equal to zero, obtain the CSI parameter value according to the difference between the second parameter and the target parameter;

The target parameter is selected by the terminal device from the parameter set, and in the case that the target parameter is an exponential power parameter, the terminal device takes the index of the target parameter as the first parameter ; or when the target parameter is zero, the terminal device uses the target parameter as the first parameter.

Optionally, as an embodiment, the first parameter is selected by the terminal device from the parameter set, and the above-mentioned parameter determination module 404 can be specifically used for:

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

Optionally, as an embodiment, the parameter set includes parameters whose denominators are exponents. The above parameter determination module 404 can be specifically used for:

Round up or down according to the product of the second parameter and the target parameter to obtain the CSI parameter value;

The target parameter is selected by the terminal device from the parameter set, and the terminal device takes the target parameter as the first parameter; or takes the index of the denominator of the target parameter as the target parameter first parameter.

Optionally, as an embodiment, the CSI further includes indication information, and the above-mentioned parameter determination module 404 can be specifically used for:

The base of the denominator of the target parameter is determined according to the indication information.

Optionally, as an embodiment, the second parameter is obtained according to the product of the product coefficient and the third parameter, and the above-mentioned parameter determination module 404 can be specifically used for:

According to the difference between the product coefficient and the first parameter, the product with the third parameter is rounded up or down to obtain the CSI parameter value;

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

Optionally, as an embodiment, the parameter set includes at least one of zero and exponential power parameters, and the second parameter is obtained according to the product of the product coefficient and the third parameter. The parameter determination module 404 may specifically be: Used for:

where the first parameter is equal to zero, the second parameter is equal to the CSI parameter value; or

In the case 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 third parameter is rounded up or down to obtain the CSI parameter value;

The target parameter is selected by the terminal device from the parameter set, and in the case that the target parameter is an exponential power parameter, the terminal device takes the index of the target parameter as the first parameter ; or, in the case that the target parameter is zero, the terminal device uses the target parameter as the first parameter.

Optionally, as an embodiment, the second parameter is obtained according to the product of the product coefficient and the third parameter, the first parameter is selected by the terminal device from the parameter set, and the parameter determination module 404 above, Specifically can be used for:

The CSI parameter value is obtained by rounding up or 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 target parameter set includes: a product coefficient set of the second parameter, or a modified product coefficient set obtained by modifying the product coefficient set.

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

Optionally, as an embodiment, when the parameter set does not include zero and the first parameter is equal to zero, the above-mentioned parameter determination module 404 can also be used to:

The first parameter is determined, wherein the first parameter is indicated by the terminal device by means of an implicit indication.

Optionally, as an embodiment, when the parameter set does not include 1, and the first parameter is equal to 1, the above-mentioned parameter determination module 404 can also be used for:

The first parameter is determined, wherein the first parameter is indicated by the terminal device by means of an implicit indication.

The network device 400 according to the embodiment of the present invention may refer to the process of the method 200 corresponding to the embodiment of the present invention, and each unit/module and the above-mentioned other operations and/or functions in the network device 400 are respectively for the purpose of realizing the corresponding steps in the method 200. The process, for the sake of brevity, will not be repeated here.

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 user interface 503. The various components in terminal device 500 are coupled together by bus system 505 . It will be appreciated that the bus system 505 is used to implement the connection communication between these components. In addition to the data bus, the bus system 505 also includes a power bus, a control bus and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 505 in FIG. 5 .

The user interface 503 may include a display, a keyboard, or a pointing device (eg, a mouse, a trackball, a touch pad or a touch screen, etc.).

It is understood that the memory 502 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be Read-Only Memory (ROM), Programmable ROM (PROM), Erasable Programmable Read-Only Memory (EPROM), Erasable Programmable Read-Only Memory (EPROM), Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be 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 synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and Direct memory bus random access memory (Direct Rambus RAM, DRRAM). The memory 502 of the systems and methods described in embodiments of the present invention is intended to include, but not be limited to, these and any other suitable types of memory.

In some embodiments, memory 502 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set of them: an operating system 5021 and applications 5022.

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

In this 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, and the computer program is executed by the processor 501 to implement the steps of the following method 100.

The methods disclosed in the above embodiments 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 with signal processing capability. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit in the processor 501 or the instructions in the form of software. The above-mentioned 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 possible Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed. 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 conjunction with the embodiments of the present invention can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers, and other computer-readable storage media that are mature in the art. The computer-readable storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502, and completes the steps of the above method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 501, each step of the embodiment of the above method 100 is implemented.

It can be understood that the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (DSP Device, DSPD), programmable logic Devices (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in this application or a combination thereof.

For software implementation, the techniques described in the embodiments of the present invention may be implemented through modules (such as procedures, functions, etc.) that perform the functions described in the embodiments of the present invention. Software codes may be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

The terminal device 500 can implement each process implemented by the terminal device in the foregoing embodiments, and in order to avoid repetition, details are not repeated here.

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

In this embodiment of the present invention, the network device 600 further includes: a computer program stored on the memory 603 and executed on the processor 601, and the computer program is executed by the processor 601 to implement the steps of the method 200.

In Figure 6, the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors, represented by processor 601, and various circuits of memory, represented by memory 603, linked together. The bus architecture can also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface. Transceiver 602 may be a number of elements, including a transmitter and a receiver, that provide means for communicating with various other devices 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.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the foregoing method embodiment 100 and method embodiment 200 is implemented, and can To achieve the same technical effect, in order to avoid repetition, details are not repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on such understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present invention.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the spirit of the present invention and the scope protected by the claims, many forms can be made, which all belong to the protection of the present invention.

Claims (38)

1. A method for indicating CSI parameters of channel state information, wherein the method is performed by a terminal device, and the method comprises: determining the first parameter according to the preset parameter set; Send CSI, where the CSI includes the first parameter, and the first parameter is used by the network device to obtain the CSI parameter value according to the first parameter. 2. The method of claim 1, wherein The first parameter is used by the network device to obtain the CSI parameter value according to the first parameter and the second parameter. 3. The method of claim 2, wherein the CSI parameter value and the second parameter comprise at least one of the following: The number of non-zero coefficients NZC fed back by the terminal device and the preset number of NZC; The number of discrete Fourier transform DFT basis vectors fed back by the terminal equipment and the number of preset DFT basis vectors; and The number of inverse discrete Fourier transform IDFT basis vectors fed back by the terminal device and the preset number of IDFT basis vectors. 4. The method of claim 3, wherein the parameter set is obtained in the following manner: configured by the network device; or as agreed; or configured by the terminal device. 5. The method according to any one of claims 1 to 4, wherein the determining the first parameter according to a preset parameter set comprises: selecting a first parameter from the parameter set; Wherein, the CSI parameter value is obtained according to the difference between the second parameter and the first parameter. 6. The method according to any one of claims 1 to 4, wherein the parameter set includes at least one of zero and exponential power parameters, and the determining the first parameter according to the preset parameter set includes: : selecting target parameters from the parameter set; If the target parameter is an exponential power parameter, the index of the target parameter is used as the first parameter; or If the target parameter is zero, use the target parameter as the first parameter; wherein, when the first parameter is equal to zero, the CSI parameter value is equal to the second parameter; or When the first parameter is not equal to zero, the CSI parameter value is obtained according to the difference between the second parameter and the target parameter. 7. The method according to any one of claims 1 to 4, wherein the determining the first parameter according to a preset parameter set comprises: selecting a first parameter from the parameter set; The CSI parameter value is obtained by rounding up or rounding down the product of the second parameter and the first parameter. 8. The method according to any one of claims 1 to 4, wherein the parameter set includes a parameter whose denominator is an exponential power, and the determining the first parameter according to the preset parameter set comprises: selecting target parameters from the parameter set; taking the target parameter as the first parameter; or taking the index of the denominator of the target parameter as the first parameter; The CSI parameter value is obtained by rounding up or rounding down the product of the second parameter and the target parameter. 9. The method of claim 8, wherein the CSI further comprises indication information, wherein the indication information is used to indicate the base of the denominator of the target parameter. 10. The method according to any one of claims 1 to 4, wherein the second parameter is obtained according to a product of a product coefficient and a third parameter, and the determining the first parameter according to a preset parameter set comprises: selecting a first parameter from the parameter set; Wherein, the CSI parameter value is obtained according to the difference between the product coefficient and the first parameter, and then the product of the third parameter is rounded up or rounded down. 11. The method according to any one of claims 1 to 4, wherein the parameter set includes at least one of zero and exponential power parameters, and the second parameter is based on the product coefficient and the third parameter. The product is obtained, and the determining the first parameter according to the preset parameter set includes: selecting target parameters from the parameter set; If the target parameter is an exponential power parameter, the index of the target parameter is used as the first parameter; or If the target parameter is zero, use the target parameter as the first parameter; wherein, when the first parameter is equal to zero, the CSI parameter value is equal to the second parameter; or When the first parameter is not equal to zero, the CSI parameter value is obtained by rounding up or rounding down the product of the third parameter and the difference between the multiplication coefficient and the target parameter. 12. The method according to any one of claims 1 to 4, wherein the second parameter is obtained according to a product of a product coefficient and a third parameter, and the determining the first parameter according to a preset parameter set comprises: selecting a first parameter from the parameter set; The CSI parameter value is obtained by rounding up or rounding down the product of the first parameter and the third parameter. 13. The method of claim 12, wherein The parameters in the parameter set are all the same or partially the same as the parameters in the target parameter set; Wherein, the target parameter set includes: a product coefficient set of the second parameter, or a modified product coefficient set obtained by modifying the product coefficient set. 14. The method of claim 13, wherein the modified set of product coefficients is obtained by dividing all parameters in the set of product coefficients by preset parameters. 15. The method of claim 13, wherein before the determining the first parameter according to the preset parameter set, the method further comprises: Parameters greater than 1 in the modified set of product coefficients are removed. 16. The method according to claim 5, 6, 10 or 11, characterized in that, when the parameter set does not include zero and the first parameter is equal to zero, the method further comprises: The first parameter is indicated by means of implicit indication. 17. The method according to claim 7, 8 or 12, in the case that 1 is not included in the parameter set and the first parameter is equal to 1, the method further comprises: The first parameter is indicated by means of implicit indication. 18. A method for indicating CSI parameters, wherein the method is performed by a network device, and the method comprises: receiving CSI, where the CSI includes a first parameter, and the first parameter is determined by the terminal device according to a preset parameter set; The CSI parameter value is obtained according to the first parameter. 19. The method of claim 18, wherein the obtaining a CSI parameter value according to the first parameter comprises: The CSI parameter value is obtained according to the first parameter and the second parameter. 20. The method of claim 19, wherein the CSI parameter value and the second parameter comprise at least one of the following: The number of NZCs fed back by the terminal device and the preset number of NZCs; The number of DFT basis vectors fed back by the terminal equipment and the number of preset DFT basis vectors; and The number of IDFT basis vectors fed back by the terminal device and the preset number of IDFT basis vectors. 21. The method of claim 20, wherein the parameter set is obtained by: configured by the network device; or as agreed; or configured by the terminal device. 22. The method according to any one of claims 18 to 21, wherein the first parameter is selected by the terminal device from the parameter set, and the first parameter is selected according to the first parameter and the second parameter The parameters to obtain the CSI parameter values include: The CSI parameter value is obtained according to the difference between the second parameter and the first parameter. 23. The method according to any one of claims 18 to 21, wherein the parameter set includes at least one of zero and exponential power parameters, and the parameter obtained according to the first parameter and the second parameter is obtained. CSI parameter values include: where the first parameter is equal to zero, the second parameter is equal to the CSI parameter value; or In the case that the first parameter is not equal to zero, obtain the CSI parameter value according to the difference between the second parameter and the target parameter; The target parameter is selected by the terminal device from the parameter set, and in the case that the target parameter is an exponential power parameter, the terminal device takes the index of the target parameter as the first parameter ;or In the case that the target parameter is zero, the terminal device uses the target parameter as the first parameter. 24. The method according to any one of claims 18 to 21, wherein the first parameter is selected by the terminal device from the parameter set, and the first parameter is selected according to the first parameter and the second parameter The parameters to obtain the CSI parameter values include: The CSI parameter value is obtained by rounding up or down according to the product of the second parameter and the first parameter. 25. The method according to any one of claims 18 to 21, wherein the parameter set includes a parameter whose denominator is an exponential power, and the CSI parameter value is obtained according to the first parameter and the second parameter include: Round up or down according to the product of the second parameter and the target parameter to obtain the CSI parameter value; The target parameter is selected by the terminal device from the parameter set, and the terminal device uses the target parameter as the first parameter; or The index of the denominator of the target parameter is used as the first parameter. 26. The method of claim 25, wherein the CSI further comprises indication information, the method further comprising: The base of the denominator of the target parameter is determined according to the indication information. 27. The method according to any one of claims 18 to 21, wherein the second parameter is obtained according to a product of a product coefficient and a third parameter, and the CSI is obtained according to the first parameter and the second parameter Parameter values include: According to the difference between the product coefficient and the first parameter, and then round up or down the product of the third parameter to obtain the CSI parameter value; The first parameter is selected by the terminal device from the parameter set. 28. The method according to any one of claims 18 to 21, wherein the parameter set includes at least one of zero and exponential power parameters, and the second parameter is based on the product coefficient and the third parameter. The product is obtained, and the obtaining of the CSI parameter value according to the first parameter and the second parameter includes: where the first parameter is equal to zero, the second parameter is equal to the CSI parameter value; or In the case that the first parameter is not equal to zero, according to the difference between the product coefficient and the target parameter, and then round up or round down the product of the third parameter to obtain the CSI parameter value; The target parameter is selected by the terminal device from the parameter set, and in the case that the target parameter is an exponential power parameter, the terminal device takes the index of the target parameter as the first parameter ;or In the case that the target parameter is zero, the terminal device uses the target parameter as the first parameter. 29. The method according to any one of claims 18 to 21, wherein the second parameter is obtained according to the product of a product coefficient and a third parameter, and the first parameter is obtained by the terminal device from the parameter Selected from the set, the obtaining the CSI parameter value according to the first parameter and the second parameter includes: The CSI parameter value is obtained by rounding up or down according to the product of the first parameter and the third parameter. 30. The method of claim 29, wherein The parameters in the parameter set are all the same or partially the same as the parameters in the target parameter set; Wherein, the target parameter set includes: a product coefficient set of the second parameter, or a modified product coefficient set obtained by modifying the product coefficient set. 31. The method of claim 30, wherein the modified set of product coefficients is obtained by dividing all parameters in the set of product coefficients by preset parameters. 32. The method according to claim 22, 23, 27 or 28, wherein, in the case that zero is not included in the parameter set and the first parameter is equal to zero, the method further comprises: The first parameter is determined, wherein the first parameter is indicated by the terminal device by means of an implicit indication. 33. The method of claim 24, 25 or 29, wherein in the case where the parameter set does not include 1 and the first parameter is equal to 1, the method further comprises: The first parameter is determined, wherein the first parameter is indicated by the terminal device by means of an implicit indication. 34. A terminal device, comprising: a parameter determination module, configured to determine the 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 by the network device to obtain the CSI parameter value according to the first parameter. 35. A network device, comprising: a receiving module, configured to receive CSI, where the CSI includes a first parameter, and the first parameter is determined by the terminal device according to a preset parameter set; A parameter determination module, configured to obtain a CSI parameter value according to the first parameter. 36. A terminal device, characterized by comprising: a memory, a processor, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor to achieve the following: Steps of the method for indicating CSI parameters according to any one of claims 1 to 17. 37. A network device, comprising: a memory, a processor, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor to achieve the following: Steps of the method for indicating CSI parameters according to any one of claims 18 to 33. 38. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program according to any one of claims 1 to 33 is implemented. Steps of the method for indicating CSI parameters.

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