CN111435855B

CN111435855B - Transmission method, terminal and network equipment for CSI report

Info

Publication number: CN111435855B
Application number: CN201910229529.3A
Authority: CN
Inventors: 施源; 宋扬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2022-08-02
Anticipated expiration: 2039-03-25
Also published as: CN111435855A

Abstract

The invention discloses a transmission method, a terminal and network equipment for CSI reports, wherein the method comprises the following steps: sending a Channel State Information (CSI) report to the network equipment; wherein the CSI report carries: first indication information indicating a set of wideband common beam indices, and second indication information indicating a set of wideband dedicated beam indices, the set of wideband dedicated beam indices being a subset of the set of wideband common beam indices. According to the terminal provided by the embodiment of the invention, different layers can independently select the special broadband beams from the broadband public beams, and the index set of the selected beams is fed back to the network equipment through the CSI report, so that the CSI feedback performance reduction caused by the fact that all layers adopt the same beams can be avoided, and the CSI feedback performance is improved.

Description

Transmission method, terminal and network equipment for CSI report

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a transmission method, a terminal, and a network device for a CSI report.

Background

In a wireless communication system, feedback of Channel State Information (CSI) is enhanced, and the CSI feedback has two modes of a type I and a type II. Type two employs spatial orthogonal baseline combining (LC) to approximate CSI, such as eigenvalue vectors of channels. Specifically, L orthogonal beams are selected from oversampled two-dimensional Discrete Fourier Transform (2D DFT) beams, the combination coefficients corresponding to the L orthogonal beams at each layer are calculated, and the amplitude values, phase values, and/or phase angle values thereof are quantized.

Further, the CSI report corresponding to CSI feedback type two may be written as a codebook write at frequency domain granularity m as a 2L × R matrix.

Assume that the three-level codebook of CSI reports at frequency domain granularity m is written as: w ═ W ₁ ×W ₂ ×W ₃ 。

Wherein, W ₁ For wideband digital beams, W ₂ For compressing the coefficient matrix, W ₃ Is an orthogonal basis vector matrix. In the existing system, the terminalAll subbands use the same W ₁ And all layers of the terminal also use the same W ₁ ，W ₁ The feedback method of (1) is direct feedback, and the feedback is carried out in a direct coding mode, so that the index values of a plurality of broadband digital beams are directly fed back, and all layers use the same W ₁ Performance degradation can result.

Disclosure of Invention

The embodiment of the invention provides a transmission method, a terminal and network equipment for a Channel State Information (CSI) report, which aim to solve the problem of CSI feedback performance degradation caused by the fact that all layers adopt the same broadband digital beam in the prior art.

In a first aspect, an embodiment of the present invention provides a method for transmitting a CSI report, which is applied to a terminal side, and includes:

sending a Channel State Information (CSI) report to the network equipment;

wherein the CSI report carries: first indication information indicating a set of wideband common beam indices, and second indication information indicating a set of wideband dedicated beam indices, the set of wideband dedicated beam indices being a subset of the set of wideband common beam indices.

In a second aspect, an embodiment of the present invention further provides a terminal, including:

a sending module, configured to send a channel state information CSI report to a network device;

In a third aspect, an embodiment of the present invention provides a terminal, where the terminal includes a processor, a memory, and a computer program stored in the memory and running on the processor, and when the computer program is executed by the processor, the steps of the method for transmitting a CSI report are implemented.

In a fourth aspect, an embodiment of the present invention provides a method for transmitting a CSI report, where the method is applied to a network device side, and includes:

receiving a Channel State Information (CSI) report;

In a fifth aspect, an embodiment of the present invention provides a network device, including:

a receiving module, configured to receive a channel state information CSI report;

In a sixth aspect, an embodiment of the present invention further provides a network device, where the network device includes a processor, a memory, and a computer program stored in the memory and running on the processor, and the processor, when executing the computer program, implements the steps of the transmission method for CSI report.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the transmission method for CSI report are implemented.

In this way, the terminal of the embodiment of the present invention may select the dedicated wideband beam from the common wideband beams independently in different layers, and feed back the index set of the selected beam to the network device through the CSI report, so that it is possible to avoid CSI feedback performance degradation caused by the same beam being used in all layers, thereby improving CSI feedback performance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 shows a block diagram of a mobile communication system to which an embodiment of the present invention is applicable;

fig. 2 is a flowchart illustrating a method for transmitting a CSI report of a terminal according to an embodiment of the present invention;

fig. 3 is a schematic block diagram of a terminal according to an embodiment of the present invention;

FIG. 4 shows a block diagram of a terminal of an embodiment of the invention;

fig. 5 is a flowchart illustrating a method for transmitting a CSI report of a network device according to an embodiment of the present invention;

FIG. 6 is a block diagram of a network device according to an embodiment of the present invention;

fig. 7 shows a block diagram of a network device of an embodiment of the invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.

The techniques described herein are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes the NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.

The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Referring to fig. 1, fig. 1 is a block diagram of a wireless communication system to which an embodiment of the present invention is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may also be referred to as a terminal Device or a User Equipment (UE), where the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, and the specific type of the terminal 11 is not limited in the embodiment of the present invention. The network device 12 may be a Base Station or a core network, wherein the Base Station may be a 5G or later-version Base Station (e.g., a gNB, a 5G NR NB, etc.), or a Base Station in other communication systems (e.g., an eNB, a WLAN access point, or other access points, etc.), wherein the Base Station may be referred to as a node B, an evolved node B, an access point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, it should be noted that, in the embodiment of the present invention, only the Base Station in the NR system is taken as an example, but does not limit the specific type of base station.

The base stations may communicate with the terminals 11 under the control of a base station controller, which may be part of the core network or some of the base stations in various examples. Some base stations may communicate control information or user data with the core network through a backhaul. In some examples, some of the base stations may communicate with each other, directly or indirectly, over backhaul links, which may be wired or wireless communication links. A wireless communication system may support operation on multiple carriers (waveform signals of different frequencies). A multi-carrier transmitter can transmit modulated signals on the multiple carriers simultaneously. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal may be transmitted on a different carrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, data, and so on.

The base station may communicate wirelessly with the terminal 11 via one or more access point antennas. Each base station may provide communication coverage for a respective coverage area. The coverage area of an access point may be divided into sectors that form only a portion of the coverage area. A wireless communication system may include different types of base stations (e.g., macro, micro, or pico base stations). The base stations may also utilize different radio technologies, such as cellular or WLAN radio access technologies. The base stations may be associated with the same or different access networks or operator deployments. The coverage areas of different base stations (including coverage areas of base stations of the same or different types, coverage areas utilizing the same or different radio technologies, or coverage areas belonging to the same or different access networks) may overlap.

The communication links in a wireless communication system may comprise an Uplink for carrying Uplink (UL) transmissions (e.g., from terminal 11 to network device 12) or a Downlink for carrying Downlink (DL) transmissions (e.g., from network device 12 to terminal 11). The UL transmission may also be referred to as reverse link transmission, while the DL transmission may also be referred to as forward link transmission. Downlink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both.

An embodiment of the present invention provides a transmission method for CSI report, which is applied to a terminal side, and as shown in fig. 2, the method may include the following steps:

step 21: sending a Channel State Information (CSI) report to the network equipment; wherein the CSI report carries: first indication information indicating a wideband common beam index set, and second indication information indicating a wideband dedicated beam index set.

The first indication information is used for indicating a broadband public beam index set selected by the terminal for at least one layer, and the broadband public beam index set comprises at least one broadband public beam corresponding to different layers. The second indication information is used for indicating a broadband dedicated beam index set selected for the at least one layer, and the broadband dedicated beam index set comprises at least one broadband dedicated beam corresponding to the current at least one layer. Wherein the set of wideband dedicated beam indices is a subset of the set of wideband common beam indices. Optionally, the terminal feeds back at least one set of wideband common beam index indication information (i.e. the first indication information) and at least one set of wideband dedicated beam index indication information (i.e. the second indication information) to the network device, wherein the set of indexes indicated by the at least one set of wideband dedicated beam indication information is a subset of the set of indexes indicated by the at least one set of wideband common beam indication information.

It is worth pointing out that the second indication information may be omitted when the corresponding wideband dedicated beam index set of a certain layer is the same as the corresponding wideband common beam index set. For example, Rank (Rank) 2 indicates the total number of layers, Rank 2 indicates 2 total layers, and the wideband common beam index set selected by the terminal for layers 0 and 1 is [1, 4, 7, 8]]Let L be ₀ ＝4，L ₁ The wideband dedicated beam index set selected by the terminal for each layer is as follows: the wideband dedicated beam index set corresponding to layer 0(layer 0) is [1, 4, 7, 8]](ii) a The wideband dedicated beam index set corresponding to layer 1(layer 1) is [1, 4, 7, 8]]. The terminal feeds back a group of broadband public beam index sets through first indication information in the CSI report, and the broadband special beam index sets and the broadband public beam index sets corresponding to the layer 0 and the layer 1Likewise, the second indication information in the CSI report may be omitted.

Different layers may share the same wideband common beam index set, for example, Rank is 4, that is, there are 4 layers in total, and the wideband common beam index set selected by the terminal for layers 1, 2, 3, and 4 is [1, 3, 4, 5, 7, 8 ].

Different layers may use different sets of wideband common beam indexes, for example, Rank is 4, that is, there are 4 layers in total, the set of wideband common beam indexes selected by the terminal for layers 1 and 2 is [1, 4, 7, 8], and the set of wideband common beam indexes selected for layers 3 and 4 is [1, 3, 4, 5, 7, 8 ].

In some embodiments of the present invention, step 21 is preceded by: receiving wideband common beam number indication information, wherein the wideband common beam number indication information is used for indicating: the number of indexes included in the wideband common beam index set, and the first indication information is related to the wideband common beam number indication information. Alternatively, the information indicating the Number of Wideband common beams may be carried in Radio Resource Control (RRC) signaling, for example, the information indicating the Number of Wideband common beams (NWBI) is defined in configuration information of the RRC signaling, or is referred to as an nbbi, and the information indicating the Number of Wideband common beams may be in the form of Lmax ₁ 、Lmax ₂ 、...、Lmax _p And is configured to indicate the number of indexes in the index set indicated by the wideband common beam indication information. If the number of sets indicated by the NWBI is equal to 1, it indicates that the sets corresponding to each layer are all subsets in the index set indicated by the unique first indication information.

Assuming Rank is 4, i.e., 4 layers in total, the number of wideband common beam indication information is 1, and Lmax ₁ When the number of beam indexes in the wideband common beam index set is 6, that is, the number of beam indexes in the wideband common beam index set is 6, the wideband common beam index set selected by the terminal is [1, 3, 4, 5, 7, 8 [ ]]. Or assuming Rank is 4, i.e. 4 layers in total, the number of wideband common beam indication information is 2, and Lmax ₁ ＝4，Lmax ₂ 6, representing that the number of beam indexes in the first group of broadband public beam index sets is 4, and the terminal selectsThe first group of wideband public beam index sets is [1, 4, 7, 8]]The number of the beam indexes in the second group of broadband public beam index sets is 6, and the second group of broadband public beam index sets selected by the terminal is [1, 2, 4, 5, 8, 10 ]]。

In some embodiments of the present invention, the number of beams in the wideband dedicated beam index set corresponding to each layer may be protocol-agreed, or step 21 further includes: receiving wideband-dedicated beam number indication information, the wideband-dedicated beam number indication information being used for indicating the number of indexes included in the wideband-dedicated beam index set, the second indication information being related to the wideband-dedicated beam number indication information. Optionally, the wideband-dedicated Beam Number Indication information may also be carried in the RRC signaling, for example, wideband-dedicated Beam Number Indication (nwbl) information for each Layer, or referred to as a wideband Beam selection Number Indication for each Layer, is defined in the configuration information of the RRC signaling, and the wideband-dedicated Beam Number Indication information may be in the form of L _i For indicating the selection number of the wideband special beam selected by the terminal for the ith layer, if Rank is less than x, the corresponding L _x Is empty.

Different layers using the same set of wideband common beam indices may use different sets of wideband dedicated beam indices. For example, Rank is 4, that is, 4 layers are shared, the number of wideband common beam indication information is 1, and Lmax ₁ When the number of beam indexes in the wideband common beam index set is 6, that is, the number of beam indexes in the wideband common beam index set is 6, the wideband common beam index set selected by the terminal is [1, 3, 4, 5, 7, 8 [ ]]. Suppose L ₀ ＝4，L ₁ ＝4，L ₂ ＝3，L ₃ The terminal selects the wideband dedicated beam index set for each layer as follows: the wideband dedicated beam index set corresponding to layer 0(layer 0) is [1, 3, 7, 8]](ii) a The wideband dedicated beam index set corresponding to layer 1(layer 1) is [3, 4, 7, 8]](ii) a The wideband dedicated beam index set corresponding to layer 2(layer 2) is [3, 5, 8]](ii) a The wideband dedicated beam index set for layer 3(layer 3) is [1, 7 ]]. The terminal feeds back a group of broadband common beam index sets through first indication information in the CSI report and feeds back the broadband common beam index sets through a second indication information in the CSI reportThe two indication information feeds back four sets of wideband dedicated beam indices.

Different layers employing the same set of wideband common beam indices may employ the same set of wideband dedicated beam indices. For example, Rank is 4, that is, there are 4 layers in total, and the wideband common beam index set selected by the terminal for layers 0 and 1 is [1, 4, 7, 8]The set of indices of the wideband common beam selected for layers 2 and 3 is 1, 2, 4, 5, 8, 10]. Suppose L ₀ ＝4，L ₁ ＝4，L ₂ ＝3，L ₃ 2, the wideband dedicated beam index set selected by the terminal for each layer is as follows: the wideband dedicated beam index set corresponding to layer 0(layer 0) is [1, 4, 7, 8]](ii) a The wideband dedicated beam index set corresponding to layer 1(layer 1) is [1, 4, 7, 8]](ii) a The wideband dedicated beam index set corresponding to layer 2(layer 2) is [2, 5, 8]](ii) a The wideband dedicated beam index set for layer 3(layer 3) is [1, 8]]. The terminal feeds back two groups of broadband public beam index sets through the first indication information in the CSI report, and the broadband special beam index sets corresponding to the layer 0 and the layer 1 are the same as the broadband public beam index set, so the terminal only feeds back two groups of broadband special beam index sets corresponding to the layer 2 and the layer 3 through the second indication information in the CSI report.

In this embodiment of the present invention, different layers may use the same wideband common beam index set, and different layers may also use different wideband common beam index sets, and accordingly, step 21 further includes: receiving first association relation information between the layer and the broadband common beam index set. The first association relation information may be configured to the terminal by the network device through RRC.

In this embodiment of the present invention, different layers may use the same wideband dedicated beam index set, and different layers may also use different wideband dedicated beam index sets, and accordingly, step 21 further includes: receiving second association relation information between the layer and the wideband dedicated beam index set. The second association information may be configured by the network device to the terminal through RRC.

Furthermore, the first association between a layer and a set of wideband common beam indices may also be predefined (as agreed by the protocol); and/or a second association between a layer and a set of wideband dedicated beam indices is predefined. For example, when Rank is 4, there are two groups of wideband common beam index sets, where layer 0 and layer 1 correspond to the first group of wideband common beam index sets, and layer 2 and layer 3 correspond to the first group of wideband common beam index sets.

Or, the first association relationship between the layer and the wideband common beam index set may also be autonomously determined by the terminal; and/or the second association between the layer and the set of wideband dedicated beam indices is determined autonomously by the terminal. In this case, when the number of the wideband common beam index sets is at least two, the CSI report may further carry: the first association relationship information between the layer and the wideband common beam index set, and/or the CSI report may also carry: second association relationship information between the layer and the set of wideband dedicated beam indices.

It should be noted that the first association relationship and the second association relationship may be indicated in different manners, for example, the protocol agrees on the first association relationship, and the terminal autonomously determines the second association relationship and feeds back the second association relationship to the network device. Or the network equipment configures the first incidence relation, and the terminal autonomously determines the second incidence relation and feeds back the second incidence relation to the network equipment. The embodiment of the present invention is not limited to this, and the determination and feedback manners of the first association relationship and the second association relationship mentioned above can be implemented by combining according to actual needs by those skilled in the art.

Further, in this embodiment of the present invention, the first indication information in the CSI report includes M indication bits, wherein,

where μ denotes the total number of broadband beams, Lmax _p And M is a positive integer and represents the number of indexes contained in the p-th broadband common beam index set. The broadband public wave beam index set indication information is fed back in a coding feedback mode, and the feedback overhead is

Preferably, M is

Rounded up to a value, μ represents the total number of wideband beam groups available, Lmax _p Representing the number of wideband digital beams in the p-th set of wideband common beam indices.

Wherein the wideband dedicated beam index set is corresponding to a layer, for example, the second indication information includes the wideband dedicated beam index set corresponding to each layer.

The second indication information in the CSI report includes N indication bits, wherein,

L _i indicating the number of indices, Lmax, contained in the wideband-dedicated beam index set corresponding to the i-th layer _x And N is a positive integer. The wideband dedicated beam index set indication information corresponding to the layer may also be fed back in a coded feedback manner, L _i Indicates the number of broadband-specific beam groups picked by the i-th layer, where L _i Less than or equal to Lmax _x ，Lmax _x Represents L _i The corresponding wideband common beam index set indicates the number of wideband beams indicated by the information. Preferably, the feedback overhead is N pairs

The number obtained is rounded up.

In addition, the second indication information may also be a bitmap (bitmap) composed of Q indication bits, where N ═ Lmax _x ，Lmax _x Indicating the number of indices contained in the wideband common beam index set. That is to say, the i-th layer broadband special beam index set is fed back in the form of bitmap, and the feedback overhead is Lmax _x And (4) a bit. Wherein, when L is _i Is equal to Lmax _x When the wideband dedicated beam index set is not fed back.

Optionally, in an embodiment of the present invention, the two-stage codebook of CSI reports at frequency domain granularity m is written as:

wherein N is ₁ 、N ₂ The number of ports of CSI Reference signals (CSI-RS) in two dimensions is respectively, and R is a rank number or a layer number; b' ₁ For orthogonal vectors consisting of 2D-DFT beam vectors, c _1，r And (m) is a combination coefficient of the L-th orthogonal beam vector of the layer R on the frequency domain granularity m, wherein R is 1, 2, …, and R, L is 1, 2, …, 2L, and L is the number of the selected orthogonal beams. The frequency domain granularity may be a sub-band or a Resource Block (RB), and the wideband may be divided into M frequency domain resources by using the frequency domain granularity as a unit.

If the combined coefficients of all sub-bands are concatenated together, a precoding matrix of the layer r in the frequency domain can be obtained, where the precoding matrix is a precoding matrix of a certain layer in a wideband (or called as a frequency domain), that is, the combined coefficients of all frequency domain granularities are concatenated together, and a precoding matrix of the layer r in the frequency domain can be obtained, and the precoding matrix can be written as a 2L × M matrix, which is expressed as follows:

wherein, c _l，r (m) is the combining coefficient of the l-th orthogonal beam vector of layer r at frequency domain granularity m. W _2，r Line 1 in represents a beam vector b' ₁ The combined coefficient matrix at all frequency domain granularities is expressed as follows:

further, the compression matrix of the CSI refers to a matrix formed by compressing the precoding matrix in the time domain or the frequency domain. The compression matrix is: in the precoding matrix and positiveAnd extracting elements from the product of the initial vector matrix of the cross bases, wherein K is a 2L multiplied by K matrix formed by the extracted elements, is a value less than M, and can be configured by the network equipment, agreed by the protocol or determined by the terminal independently. E.g. spatial compression using CSI feedback type two, for W _2，r Carry out transformation W ₃ I.e. by

From W ₃ Is orthogonal to

Suppose W ₃ Determining an Inverse Discrete Fourier Transform (IDFT) matrix of dimension M × M corresponds to transforming the combined coefficients of the frequency domain into the time domain, i.e. for W _2，r And (3) carrying out transformation:

if the frequency domain coefficients after the spatial compression have sparseness in the time domain, only a small number of time domain coefficients with larger amplitude can be fed back, and other time domain coefficients are zero. Assuming that only the K time domain coefficients with the maximum amplitude after IDFT are fed back, the method is characterized in that

Extracting K rows to obtain

The coefficient matrix in the embodiment of the present invention is a matrix to be quantized, which may be mentioned above: combining coefficient matrix W _2，r Compression matrix

Or a compression matrix

And extracting the matrix after the elements. E.g. matrices requiring quantizationComprises the following steps:

wherein r represents a rank or a layer, Q represents a number of rows of a matrix to be quantized, and Q may be 2L rows, that is, the coefficient matrix is a compression matrix; q may also be the number of rows after further compression (Q < 2L), e.g. Q2L-2, i.e. the coefficient matrix is the matrix from which the elements of the compressed matrix are extracted.

The CSI report includes a first Part (Part) and a second Part (Part2), the payload size of the second Part is determined according to the first Part, the first indication information may be carried in the first Part or the second Part, and the second indication information may also be carried in the first Part or the second Part.

In the transmission method of the CSI report of the embodiment of the present invention, different layers of the terminal may independently select the dedicated wideband beam from the common wideband beams, and feed back the index set of the selected beam to the network device through the CSI report, so that it is possible to avoid CSI feedback performance degradation caused by the same beam being used by all layers, thereby improving CSI feedback performance.

The foregoing embodiments describe methods for transmitting CSI reports in different scenarios, and further describe terminals corresponding to the methods with reference to the accompanying drawings.

As shown in fig. 3, a terminal 300 according to an embodiment of the present invention can implement the foregoing embodiment to send a CSI report to a network device; wherein the CSI report carries: the terminal 300 specifically includes the following functional modules:

a sending module 310, configured to send a CSI report to a network device;

Optionally, the terminal 300 further includes:

a first receiving module, configured to receive wideband common beam number indication information, where the wideband common beam number indication information is used to indicate: the number of indexes included in the wideband common beam index set, and the first indication information is related to the wideband common beam number indication information.

Optionally, the terminal 300 further includes:

and a second receiving module, configured to receive wideband dedicated beam number indication information, where the wideband dedicated beam number indication information is used to indicate the number of indexes included in the wideband beam index set, and the second indication information is related to the wideband dedicated beam number indication information.

Optionally, the terminal 300 further includes:

a third receiving module, configured to receive first association relationship information between a layer and a broadband common beam index set;

and/or the presence of a gas in the gas,

and the fourth receiving module is used for receiving second association relation information between the layer and the broadband special beam index set.

Optionally, when the number of wideband common beam index sets is at least two, the CSI report further carries: first association relation information between the layer and the wideband common beam index set, and/or second association relation information between the layer and the wideband dedicated beam index set.

Optionally, a first association between a layer and a set of wideband common beam indices is predefined;

and/or the presence of a gas in the gas,

a second association between a layer and the set of wideband dedicated beam indices is predefined.

Optionally, the first indication information comprises M indication bits, wherein,

mu denotes the total number of broadband beams, Lmax _p And M is a positive integer and represents the number of indexes contained in the p-th broadband common beam index set.

Optionally, the set of wideband dedicated beam indices is layer-specific.

Optionally, the second indication information comprises N indication bits, wherein,

L _i indicating the number of indices, Lmax, contained in the wideband-dedicated beam index set corresponding to the i-th layer _x And N is a positive integer.

Optionally, the second indication information includes a bitmap composed of Q indication bits, where N ═ Lmax _x ，Lmax _x Indicating the number of indices contained in the wideband common beam index set.

It is worth pointing out that, in the terminal according to the embodiment of the present invention, different layers may independently select a wideband dedicated beam from a wideband common beam, and feed back an index set of the selected beam to the network device through a CSI report, so that it is possible to avoid CSI feedback performance degradation caused by the same beam being used by all layers, thereby improving CSI feedback performance.

To better achieve the above object, further, fig. 4 is a schematic diagram of a hardware structure of a terminal implementing various embodiments of the present invention, where the terminal 40 includes, but is not limited to: radio frequency unit 41, network module 42, audio output unit 43, input unit 44, sensor 45, display unit 46, user input unit 47, interface unit 48, memory 49, processor 410, and power supply 411. Those skilled in the art will appreciate that the terminal configuration shown in fig. 4 is not intended to be limiting, and that the terminal may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The radio frequency unit 41 is configured to send a channel state information CSI report to the network device; wherein the CSI report carries: first indication information for indicating a wideband common beam index set, and second indication information for indicating a wideband dedicated beam index set, the wideband dedicated beam index set being a subset of the wideband common beam index set;

a processor 410 for controlling the rf unit 41 to transmit and receive data;

according to the terminal provided by the embodiment of the invention, different layers can independently select the special broadband beams from the broadband public beams, and the index set of the selected beams is fed back to the network equipment through the CSI report, so that the CSI feedback performance reduction caused by the fact that all layers adopt the same beams can be avoided, and the CSI feedback performance is improved.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 41 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 410; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 41 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 41 can also communicate with a network and other devices through a wireless communication system.

The terminal provides wireless broadband internet access to the user via the network module 42, such as assisting the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.

The audio output unit 43 may convert audio data received by the radio frequency unit 41 or the network module 42 or stored in the memory 49 into an audio signal and output as sound. Also, the audio output unit 43 may also provide audio output related to a specific function performed by the terminal 40 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 43 includes a speaker, a buzzer, a receiver, and the like.

The input unit 44 is for receiving an audio or video signal. The input Unit 44 may include a Graphics Processing Unit (GPU) 441 and a microphone 442, and the Graphics processor 441 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 46. The image frames processed by the graphic processor 441 may be stored in the memory 49 (or other storage medium) or transmitted via the radio frequency unit 41 or the network module 42. The microphone 442 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 41 in case of the phone call mode.

The terminal 40 also includes at least one sensor 45, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 461 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 461 and/or a backlight when the terminal 40 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 45 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 46 is used to display information input by the user or information provided to the user. The Display unit 46 may include a Display panel 461, and the Display panel 461 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 47 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 47 includes a touch panel 471 and other input devices 472. The touch panel 471, also referred to as a touch screen, may collect touch operations by a user (e.g., operations by a user on or near the touch panel 471 using a finger, a stylus, or any other suitable object or accessory). The touch panel 471 can include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 410, receives a command from the processor 410, and executes the command. In addition, the touch panel 471 can be implemented by various types, such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 47 may include other input devices 472 in addition to the touch panel 471. Specifically, the other input devices 472 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 471 can be overlaid on the display panel 461, and when the touch panel 471 detects a touch operation on or near the touch panel 471, the touch panel transmits the touch operation to the processor 410 to determine the type of the touch event, and then the processor 410 provides a corresponding visual output on the display panel 461 according to the type of the touch event. Although the touch panel 471 and the display panel 461 are shown as two separate components in fig. 4, in some embodiments, the touch panel 471 and the display panel 461 may be integrated to implement the input and output functions of the terminal, and are not limited herein.

The interface unit 48 is an interface for connecting an external device to the terminal 40. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 48 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the terminal 40 or may be used to transmit data between the terminal 40 and external devices.

The memory 49 may be used to store software programs as well as various data. The memory 49 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 49 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 410 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 49 and calling data stored in the memory 49, thereby integrally monitoring the terminal. Processor 410 may include one or more processing units; preferably, the processor 410 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 410.

The terminal 40 may further include a power supply 411 (e.g., a battery) for supplying power to various components, and preferably, the power supply 411 may be logically connected to the processor 410 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.

In addition, the terminal 40 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, including a processor 410, a memory 49, and a computer program stored in the memory 49 and capable of running on the processor 410, where the computer program is executed by the processor 410 to implement each process of the above transmission method for CSI report, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. A terminal may be a wireless terminal or a wired terminal, and a wireless terminal may be a device providing voice and/or other service data connectivity to a user, a handheld device having a wireless connection function, or other processing devices connected to a wireless modem. Wireless terminals, which may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (RAN), which may exchange language and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the transmission method embodiment of the CSI report, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

The above embodiment describes the transmission method of the CSI report of the present invention from the terminal side, and the following embodiment further describes the transmission method of the CSI report of the network device side with reference to the accompanying drawings.

As shown in fig. 5, the method for transmitting a CSI report according to an embodiment of the present invention is applied to a network device, and the method may include the following steps:

step 51: receiving a Channel State Information (CSI) report; wherein the CSI report carries: first indication information indicating a wideband common beam index set, and second indication information indicating a wideband dedicated beam index set.

The wideband public beam index set comprises at least one wideband public beam corresponding to different layers, and the wideband special beam index set comprises at least one wideband special beam corresponding to the current layer. The set of wideband dedicated beam indices is a subset of the set of wideband common beam indices. The terminal feeds back a CSI report to the network equipment, wherein first indication information in the CSI report is used for indicating at least one group of broadband public beam index sets, and second indication information is used for indicating at least one group of broadband special beam index sets, wherein the at least one group of broadband special beam index sets are subsets of the at least one group of broadband public beam index sets.

It is worth pointing out that, when a wideband dedicated beam index set corresponding to a certain layer is the same as its corresponding wideband common beam index set, there may be no second indication information in the CSI report.

Different layers can share the same broadband public beam index set, and different layers can adopt different broadband public beam index sets. In some embodiments, before step 51, further comprising: transmitting broadband common beam number indication information, the broadband common beam number indication information indicating: the number of indices contained in the set of wideband common beam indices. Alternatively, the wideband common beam number indication information may be carried in the RRIn the C signaling, for example, the nbbi information, or the wideband common beam selection number indication, is defined in the configuration information of the RRC signaling, and the wideband common beam number indication information may be in the form of Lmax ₁ 、Lmax ₂ 、…、Lmax _p And is configured to indicate the number of indexes in the index set indicated by the wideband common beam indication information. If the number of sets indicated by the NWBI is equal to 1, it indicates that the sets corresponding to each layer are all subsets in the index set indicated by the unique first indication information.

The number of beams in the wideband dedicated beam index set corresponding to each layer may be protocol-agreed, or before step 51, the method further includes: and transmitting the broadband special beam number indication information, wherein the broadband special beam number indication information is used for indicating the number of indexes contained in the broadband special beam index set. Optionally, wideband dedicated beam number indication information may also be carried in RRC signaling, for example, wideband dedicated beam number indication NWBLI information of each layer is defined in configuration information of RRC signaling, or referred to as wideband beam selection number indication of each layer, and the wideband dedicated beam number indication information may be in the form of L _i For indicating the selection number of the wideband dedicated beam selected by the terminal for the ith layer, if rank is less than x, the corresponding L _x Is empty.

It is worth noting that different layers using the same wideband common beam index set may use different sets of wideband dedicated beam indices. Different layers employing the same set of wideband common beam indices may employ the same set of wideband dedicated beam indices. Different layers may use the same wideband common beam index set, and different layers may also use different wideband common beam index sets, and accordingly, before step 51, the method further includes: sending first incidence relation information between a layer and a broadband public beam index set; the first association relation information may be configured to the terminal by the network device through RRC.

In this embodiment of the present invention, different layers may use the same wideband dedicated beam index set, and different layers may also use different wideband dedicated beam index sets, and accordingly, step 51 may further include: and transmitting second association relation information between the layer and the broadband special beam index set. The second association information may be configured by the network device to the terminal through RRC.

Furthermore, the first association between a layer and a set of wideband common beam indices may also be predefined (as agreed by the protocol); and/or a second association between a layer and a set of wideband dedicated beam indices is predefined.

where μ denotes the total number of broadband beams, Lmax _p And M is a positive integer and represents the number of indexes contained in the p-th broadband common beam index set. The broadband public wave beam index set indication information is fed back in a coding feedback mode, and the feedback overhead is M pairs

L _i indicating the number of indices, Lmax, contained in the wideband-dedicated beam index set corresponding to the i-th layer _x And N is a positive integer. The wideband dedicated beam index set indication information corresponding to the layer may also be fed back in a coded feedback manner, L _i Indicates the number of broadband-specific beam groups picked by the i-th layer, where L _i Less than or equal to Lmax _x ，Lmax _x Represents L _i The number of the broadband wave beams indicated by the corresponding broadband public wave beam index set indication information, and the feedback overhead N is the pair

The number obtained is rounded up.

In the transmission method of the CSI report of the embodiment of the present invention, the network device receives the CSI report from the terminal side, where the CSI report carries: the first indication information of the broadband public beam index sets corresponding to different layers of the terminal and the second indication information of the broadband special beam index sets corresponding to different layers of the terminal can be used, so that the network equipment can determine the broadband special beams independently selected by different layers of the terminal, the CSI feedback performance reduction caused by the fact that all the layers adopt the same beam can be avoided, and the CSI feedback performance is improved.

The foregoing embodiments respectively describe in detail the transmission methods of CSI reports in different scenarios, and the following embodiments further describe corresponding network devices with reference to the accompanying drawings.

As shown in fig. 6, a network device 600 according to an embodiment of the present invention can implement receiving a CSI report in the foregoing embodiment; wherein the CSI report carries: the network device 600 specifically includes the following functional modules:

a receiving module 610, configured to receive a channel state information, CSI, report;

Optionally, the network device 600 further includes:

a first sending module, configured to send wideband common beam number indication information, where the wideband common beam number indication information is used to indicate: the number of indices contained in the set of wideband common beam indices.

Optionally, the network device 600 further includes:

and a second sending module, configured to send wideband dedicated beam number indication information, where the wideband dedicated beam number indication information is used to indicate the number of indexes included in the wideband dedicated beam index set.

Optionally, the network device 600 further includes:

a third sending module, configured to send first association relationship information between the layer and the wideband common beam index set;

and/or the presence of a gas in the gas,

and the fourth sending module is used for sending second incidence relation information between the layer and the broadband special beam index set.

and/or the presence of a gas in the atmosphere,

Optionally, the set of wideband dedicated beam indices is layer-specific.

L _i indicating the number of indices, Lmax, contained in the wideband-dedicated beam index set corresponding to the i-th layer _x Indicating the corresponding broadband of the ith layerThe number of indices contained in the common beam index set, N being a positive integer.

It is worth pointing out that, the network device according to the embodiment of the present invention receives the CSI report from the terminal side, where the CSI report carries: the first indication information of the broadband public beam index sets corresponding to different layers of the terminal and the second indication information of the broadband special beam index sets corresponding to different layers of the terminal can be used, so that the network equipment can determine the broadband special beams independently selected by different layers of the terminal, the CSI feedback performance reduction caused by the fact that all the layers adopt the same beam can be avoided, and the CSI feedback performance is improved.

It should be noted that the division of the modules of the network device and the terminal is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the determining module may be a processing element separately set up, or may be implemented by being integrated in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the determining module is called and executed by a processing element of the apparatus. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when some of the above modules are implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor that can invoke the program code. As another example, these modules may be integrated together, implemented in the form of a system-on-a-chip (SOC).

To better achieve the above object, an embodiment of the present invention further provides a network device, which includes a processor, a memory, and a computer program stored on the memory and executable on the processor, and the processor, when executing the computer program, implements the steps in the transmission method of the CSI report as described above. An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the transmission method for CSI report as described above.

Specifically, the embodiment of the invention also provides a network device. As shown in fig. 7, the network device 700 includes: an antenna 71, a radio frequency device 72, a baseband device 73. The antenna 71 is connected to a radio frequency device 72. In the uplink direction, the rf device 72 receives information via the antenna 71 and sends the received information to the baseband device 73 for processing. In the downlink direction, the baseband device 73 processes information to be transmitted and transmits the information to the rf device 72, and the rf device 72 processes the received information and transmits the processed information through the antenna 71.

The above-mentioned band processing means may be located in the baseband means 73, and the method performed by the network device in the above embodiment may be implemented in the baseband means 73, where the baseband means 73 includes a processor 74 and a memory 75.

The baseband device 73 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 7, wherein one of the chips, for example, the processor 74, is connected to the memory 75 to call up the program in the memory 75 to perform the network device operation shown in the above method embodiment.

The baseband device 73 may further include a network interface 76, such as a Common Public Radio Interface (CPRI), for exchanging information with the radio frequency device 72.

The processor may be a single processor or a combination of multiple processing elements, for example, the processor may be a CPU, an ASIC, or one or more integrated circuits configured to implement the methods performed by the network devices, for example: one or more microprocessors DSP, or one or more field programmable gate arrays FPGA, or the like. The storage element may be a memory or a combination of a plurality of storage elements.

The memory 75 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 75 described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Specifically, the network device of the embodiment of the present invention further includes: a computer program stored on the memory 75 and executable on the processor 74, the processor 74 calling the computer program in the memory 75 to execute the method performed by each module shown in fig. 6.

In particular, the computer program when invoked by the processor 74 is operable to perform: receiving a Channel State Information (CSI) report;

In the network device in the embodiment of the present invention, a CSI report is received from a terminal side, where the CSI report carries: the first indication information of the broadband public beam index sets corresponding to different layers of the terminal and the second indication information of the broadband special beam index sets corresponding to different layers of the terminal can be used, so that the network equipment can determine the broadband special beams independently selected by different layers of the terminal, the CSI feedback performance reduction caused by the fact that all the layers adopt the same beam can be avoided, and the CSI feedback performance is improved.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

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

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

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

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product containing program code for implementing the method or device. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A transmission method of CSI report is applied to a terminal side, and is characterized by comprising the following steps:

sending a Channel State Information (CSI) report to the network equipment;

wherein the CSI report carries: first indication information indicating a set of wideband common beam indices, and second indication information indicating a set of wideband dedicated beam indices, the set of wideband dedicated beam indices being a subset of the set of wideband common beam indices;

the wideband common beam index set comprises index values of at least one wideband common beam corresponding to different layers, and the wideband dedicated beam index set comprises index values of at least one wideband dedicated beam corresponding to at least one current layer.

2. The method for transmitting CSI reports according to claim 1, wherein the step of sending CSI reports to the network device further comprises:

receiving wideband common beam number indication information, where the wideband common beam number indication information is used to indicate: the first indication information is related to the wideband public beam number indication information.

3. The method for transmitting CSI reports according to claim 1 or 2, wherein the step of sending CSI reports to the network device further comprises:

receiving wideband-dedicated beam number indication information, where the wideband-dedicated beam number indication information is used to indicate the number of indexes included in the wideband-dedicated beam index set, and the second indication information is related to the wideband-dedicated beam number indication information.

4. The method for transmitting CSI reports according to claim 1, wherein the step of sending CSI reports to the network device further comprises:

receiving first association relation information between a layer and the broadband common beam index set;

and/or the presence of a gas in the gas,

receiving second association relationship information between a layer and the set of wideband dedicated beam indices.

5. The method for transmitting CSI reports according to claim 1, wherein when the number of the wideband common beam index sets is at least two, the CSI reports further carry: first association relation information between a layer and the wideband common beam index set, and/or second association relation information between a layer and the wideband dedicated beam index set.

6. The method of claim 1, wherein a first association between a layer and the set of wideband common beam indices is predefined;

and/or the presence of a gas in the gas,

7. The method for transmitting CSI report according to claim 1, wherein the first indication information comprises M indication bits, wherein,

mu denotes the total number of broadband beams, Lmax _p Indicating the number of indices contained in the p-th wideband common beam index set.

8. The method of claim 1, wherein the set of wideband-specific beam indices are layer-specific.

9. The method for transmitting CSI report according to claim 8, wherein the second indication information comprises N indication bits, wherein,

L _i indicating the number of indices, Lmax, contained in the wideband-dedicated beam index set corresponding to the i-th layer _x Indicating the number of indexes contained in the wideband common beam index set corresponding to the ith layer.

10. The method of claim 1, wherein the second indication information comprises a bitmap consisting of Q indication bits, wherein N-Lmax _x ，Lmax _x Indicating the number of indices contained in the wideband common beam index set.

11. A terminal, comprising:

12. The terminal of claim 11, wherein the terminal further comprises:

a first receiving module, configured to receive wideband common beam number indication information, where the wideband common beam number indication information is used to indicate: the first indication information is related to the wideband public beam number indication information.

13. The terminal according to claim 11 or 12, characterized in that the terminal further comprises:

a second receiving module, configured to receive dedicated broadband beam number indication information, where the dedicated broadband beam number indication information is used to indicate the number of indexes included in the broadband beam index set, and the second indication information is related to the dedicated broadband beam number indication information.

14. The terminal of claim 11, wherein the terminal further comprises:

a third receiving module, configured to receive first association relationship information between a layer and the wideband common beam index set;

and/or the presence of a gas in the gas,

a fourth receiving module, configured to receive second association relationship information between a layer and the wideband dedicated beam index set.

15. A terminal, characterized in that the terminal comprises a processor, a memory and a computer program stored on the memory and running on the processor, which computer program, when executed by the processor, carries out the steps of the method for transmission of channel state information, CSI, reports according to any of claims 1 to 10.

16. A transmission method of CSI report is applied to a network device side, and is characterized by comprising the following steps:

receiving a Channel State Information (CSI) report;

the wideband public beam index set comprises index values of at least one wideband public beam corresponding to different layers, and the wideband special beam index set comprises index values of at least one wideband special beam corresponding to at least one current layer.

17. The method for transmitting CSI reports as claimed in claim 16, wherein the step of receiving CSI reports is preceded by the steps of:

transmitting wideband common beam number indication information, the wideband common beam number indication information indicating: the number of indices comprised by the wideband common beam index set.

18. The method for transmitting CSI reports according to claim 16 or 17, wherein the step of receiving CSI reports is preceded by the steps of:

and sending wideband special beam number indication information, wherein the wideband special beam number indication information is used for indicating the number of indexes contained in the wideband special beam index set.

19. The method for transmitting a CSI report according to claim 16, further comprising, before the step of receiving a CSI report:

transmitting first association relation information between a layer and the broadband public beam index set;

and/or the presence of a gas in the gas,

transmitting second association relation information between a layer and the wideband dedicated beam index set.

20. The method for transmitting CSI reports according to claim 16, wherein when the number of the wideband common beam index sets is at least two, the CSI report further carries: first association relation information between a layer and the wideband common beam index set, and/or second association relation information between a layer and the wideband dedicated beam index set.

21. The method of transmitting CSI reports of claim 16 wherein a first association between a layer and said set of wideband common beam indices is predefined;

and/or the presence of a gas in the gas,

22. The method for transmitting a CSI report according to claim 16, wherein the first indication information includes M indication bits, wherein,

μ denotes the total number of broadband beams, Lmax _p Indicating the number of indices contained in the p-th wideband common beam index set.

23. The method of claim 16, wherein the set of wideband-specific beam indices are layer-specific.

24. The method for transmitting a CSI report according to claim 23, wherein the second indication information comprises N indication bits, wherein,

L _i indicating the number of indices, Lmax, contained in the wideband-dedicated beam index set corresponding to the i-th layer _x Indicating the corresponding wideband public beam index set of the ith layerThe number of indices contained in the sum.

25. The method for transmitting CSI report according to claim 16, wherein said second indication information comprises a bitmap consisting of Q indication bits, where N ═ Lmax _x ，Lmax _x Indicating the number of indices contained in the wideband common beam index set.

26. A network device, comprising:

27. The network device of claim 26, wherein the network device further comprises:

a first sending module, configured to send wideband common beam number indication information, where the wideband common beam number indication information is used to indicate: the number of indices comprised by the set of wideband common beam indices.

28. The network device of claim 26 or 27, wherein the network device further comprises:

a second sending module, configured to send wideband dedicated beam number indication information, where the wideband dedicated beam number indication information is used to indicate the number of indexes included in the wideband dedicated beam index set.

29. The network device of claim 26, wherein the network device further comprises:

a third sending module, configured to send first association relationship information between a layer and the wideband common beam index set;

and/or the presence of a gas in the gas,

a fourth sending module, configured to send second association relationship information between a layer and the wideband dedicated beam index set.

30. A network device, characterized in that the network device comprises a processor, a memory and a computer program stored on the memory and run on the processor, the processor implementing the steps of the method for transmission of channel state information, CSI, reports according to any of claims 16 to 25 when executing the computer program.

31. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for transmission of a channel state information, CSI, report according to any of claims 1 to 10, 16 to 25.