CN111436080A

CN111436080A - Information sending method, terminal equipment and network equipment

Info

Publication number: CN111436080A
Application number: CN201910028410.XA
Authority: CN
Inventors: 李辉; 高秋彬; 刘正宣; 陈润华
Original assignee: Telecommunications Science and Technology Research Institute Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2020-07-21
Anticipated expiration: 2039-01-11
Also published as: CN111436080B

Abstract

The application discloses an information sending method, terminal equipment and network equipment, which are used for reducing feedback overhead of the terminal equipment. The information sending method comprises the following steps: quantizing phase coefficients in a phase coefficient set of a codebook according to at least two different precisions according to amplitude coefficients in an amplitude coefficient set of the codebook, wherein one phase coefficient is quantized according to one precision to obtain a quantized phase coefficient set, wherein the amplitude coefficients are used for representing the amplitudes of elements in the codebook, and the phase coefficients are used for representing the phases of the elements in the codebook; and reporting information related to the quantized phase coefficient set to network equipment.

Description

Information sending method, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to an information sending method, terminal equipment and network equipment.

Background

A Type II codebook is defined in an NR (New Radio ) system. The Type II codebook defined in Rel-15(Release15, version 15) is based on linear combination of orthogonal beams, has higher channel quantization precision, and since the feedback of each subband includes both subband phase coefficients and subband amplitude coefficients, the overhead of feeding back coefficients of all subbands is huge when the number of subbands is large.

A low-overhead type II codebook proposed in Rel-16 is based on linear combination of orthogonal beams and subband coefficient compression, and needs to feed back the compressed subband coefficients to a base station, and the compressed subband coefficients need to be quantized and fed back to the base station. In the prior art, all the sub-band coefficients in the sub-band coefficients are quantized in the same quantization mode, and the feedback overhead is still large.

Disclosure of Invention

The embodiment of the application provides an information sending method, which is used for reducing the feedback overhead of terminal equipment.

In a first aspect, the present application provides an information sending method, where phase coefficients in a phase coefficient set of a codebook are quantized according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook, where one phase coefficient is quantized according to one precision to obtain a quantized phase coefficient set, where the amplitude coefficient is used to represent the amplitude of an element in the codebook, and the phase coefficient is used to represent the phase of the element in the codebook; and reporting information related to the quantized phase coefficient set to network equipment.

In the embodiment of the application, the terminal device quantizes the phase coefficients in the phase coefficient set according to at least two different accuracies, so that the situation that all the phase coefficients are quantized with the same accuracy and redundancy is easily caused is avoided, and the feedback overhead of the terminal device can be reduced.

Optionally, quantizing the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, where the quantizing step includes:

arranging the quantized amplitude coefficients in a descending order to obtain a sorted amplitude coefficient set;

dividing the amplitude coefficients in the ordered amplitude coefficient set into T groups of amplitude coefficients according to an arrangement sequence, and quantizing T groups of phase coefficients corresponding to the T groups of amplitude coefficients according to T kinds of precision to obtain a quantized phase coefficient set;

wherein, the T kinds of precision are reduced in sequence according to the index sequence of T, and T is an integer greater than or equal to 2.

Here, T may be preset by the system, or may be indicated by the base station; the amplitude coefficients in each group of amplitude coefficients of the T groups of amplitude coefficients may also be preset by the system, may also be indicated by the base station, may also be randomly divided by the terminal device, and is not limited herein.

Of course, in this embodiment of the present application, the quantized amplitude coefficient sets may also be arranged in the order from small to large to obtain a sorted amplitude coefficient set, the amplitude coefficients in the sorted amplitude coefficient set are divided into T groups of amplitude coefficients according to the order of arrangement, and the T groups of phase coefficients corresponding to the T groups of amplitude coefficients are quantized according to T kinds of precision to obtain a quantized phase coefficient set, where the T kinds of precision are sequentially increased according to the order of the indexes of T.

receiving indication information sent by the network equipment, wherein the indication information is used for indicating a feedback mode in which the terminal equipment sends feedback information to the network equipment, the feedback mode comprises a first feedback mode and a second feedback mode, and the highest precision of a quantization mode corresponding to the first feedback mode is higher than that of a quantization mode corresponding to the second feedback mode;

and according to the indication information and the amplitude coefficients in the amplitude coefficient set, quantizing the phase coefficients in the phase coefficient set according to at least two different precisions to obtain a quantized phase coefficient set.

In a specific implementation process, when the channel quality is poor, the network device may instruct the terminal device to adopt the first feedback mode feedback information, that is, quantize the phase coefficients in the phase coefficient set according to high precision, and when the channel quality is good, the network device may instruct the terminal device to adopt the second feedback mode feedback information, that is, quantize the phase coefficients in the phase coefficient set according to low precision, so as to reduce the feedback overhead of the terminal device. Therefore, by the implementation mode, the feedback overhead of the terminal equipment can be reduced under the condition that the quality of the network equipment for receiving the information sent by the terminal equipment is ensured.

determining a wideband amplitude coefficient set of the codebook according to the amplitude coefficient set and the phase coefficient set;

according to the quantized broadband amplitude coefficient set, quantizing the phase coefficients in the phase coefficient set according to at least two different precisions to obtain a quantized phase coefficient set; wherein one wideband amplitude coefficient in the set of wideband amplitude coefficients corresponds to one beam in the codebook for linear combining or to one basis vector in the codebook for frequency domain compression; or

According to the amplitude coefficient in the amplitude coefficient set of the codebook, quantizing the phase coefficient in the phase coefficient set of the codebook according to at least two different precisions to obtain a quantized phase coefficient set, including:

determining a wideband amplitude coefficient set and a differential amplitude coefficient set of the codebook according to the amplitude coefficient set and the phase coefficient set;

quantizing the phase coefficients in the phase coefficient set according to at least two different precisions according to the quantized broadband amplitude coefficient set and the quantized differential amplitude coefficient set to obtain a quantized phase coefficient set; wherein one wideband amplitude coefficient in the set of wideband amplitude coefficients corresponds to one beam in the codebook for linear combining or to one basis vector in the codebook for frequency domain compression; or

determining a wideband amplitude coefficient set of the codebook, a wideband phase coefficient set of the codebook and a differential phase coefficient set of the codebook according to the amplitude coefficient set and the phase coefficient set;

quantizing the broadband phase coefficients in the broadband phase coefficient set and the differential phase coefficients in the differential phase coefficient set according to at least two different precisions according to the quantized broadband amplitude coefficient set to obtain a quantized broadband phase coefficient set and a quantized differential phase coefficient set; or

determining a first wideband amplitude coefficient set of the codebook, a second wideband amplitude coefficient set of the codebook and a differential amplitude coefficient set of the codebook according to the amplitude coefficient set and the phase coefficient set; wherein a first wideband amplitude coefficient in the first set of wideband amplitude coefficients corresponds to a beam in the codebook for linear combining, and a second wideband amplitude coefficient in the second set of wideband amplitude coefficients corresponds to a basis vector in the codebook for frequency domain compression;

and quantizing the phase coefficients in the phase coefficient set according to at least two precisions according to the quantized first wideband amplitude coefficient set, the quantized second wideband amplitude coefficient set and/or the quantized difference amplitude coefficient set so as to obtain the quantized phase coefficient set and the position and the number of the phase coefficients with the value of zero.

Optionally, the method further includes:

quantizing the differential amplitude coefficients in the differential amplitude coefficient set according to at least two different precisions according to the quantized wideband amplitude coefficient set, wherein one differential amplitude coefficient is quantized according to one precision to obtain a quantized differential amplitude coefficient set;

and reporting information related to the quantized wideband amplitude coefficient set and information related to the quantized differential amplitude coefficient set to the network equipment.

Optionally, quantizing the phase coefficients in the phase coefficient set according to at least two different accuracies according to the quantized wideband amplitude coefficient set to obtain a quantized phase coefficient set, including:

arranging the quantized broadband amplitude coefficients in a descending order to obtain a sorted broadband amplitude coefficient set;

dividing the broadband amplitude coefficients in the sorted broadband amplitude coefficient set into S groups of broadband amplitude coefficients according to the sorting order, and quantizing S groups of phase coefficients corresponding to the S groups of broadband amplitude coefficients according to S kinds of precision to obtain a quantized phase coefficient set;

wherein, the S kinds of precision are reduced in sequence according to the index sequence of S, and S is an integer greater than or equal to 2.

Here, S may be preset by the system, or may be indicated by the base station, and is not limited herein.

Alternatively to this, the first and second parts may,

the value of one broadband amplitude coefficient in the broadband amplitude coefficient set is the maximum value in an amplitude coefficient group corresponding to one beam or the maximum value in an amplitude coefficient group corresponding to one base vector; or

The value of one broadband amplitude coefficient in the broadband amplitude coefficient set is the average value of the amplitude coefficient values in the amplitude coefficient group corresponding to one beam, or the average value of the amplitude coefficient values in the amplitude coefficient group corresponding to one base vector; or

The value of one wideband amplitude coefficient of the set of wideband amplitude coefficients is a value determined based on wideband channel characteristics.

Optionally, the number of first wideband amplitude coefficients in the first wideband amplitude coefficient set is 2L, and the number of second wideband amplitude coefficients in the second wideband amplitude coefficient set is M;

quantizing the phase coefficients in the phase coefficient set according to at least two precisions according to the quantized first wideband amplitude coefficient set, the quantized second wideband amplitude coefficient set and/or the quantized differential phase coefficient set to obtain a quantized phase coefficient set, including:

arranging the quantized first broadband amplitude coefficients in a descending order to obtain an ordered first broadband amplitude coefficient set, and arranging the quantized second broadband amplitude coefficients in a descending order to obtain an ordered second broadband amplitude coefficient set;

quantizing phase coefficients corresponding to first Q second wideband amplitude coefficients in the ordered second wideband amplitude coefficient set in P groups of phase coefficients corresponding to first P first wideband amplitude coefficients in the ordered first wideband amplitude coefficient set by adopting a first quantization mode, setting phase coefficients corresponding to last M-Q second wideband amplitude coefficients in the ordered second wideband amplitude coefficient set in 2L-P groups of phase coefficients corresponding to 2L-P first wideband amplitude coefficients in the ordered first wideband amplitude coefficient set to be 0, and quantizing other phase coefficients in the phase coefficient set by adopting a second quantization mode to obtain a quantized phase coefficient set;

wherein, P is an integer greater than or equal to 1, Q is an integer greater than or equal to 1, and the precision of the first quantization mode is higher than that of the second quantization mode; or

multiplying the difference amplitude coefficient in the quantized difference amplitude coefficient set, the first broadband amplitude coefficient in the quantized first broadband amplitude coefficient set and the second broadband amplitude coefficient in the quantized second broadband amplitude coefficient set to obtain a first amplitude coefficient set;

and according to the amplitude coefficient in the first amplitude coefficient set, quantizing the phase coefficient in the phase coefficient set according to at least two precisions to obtain a quantized phase coefficient.

Optionally, the method further includes:

normalizing the maximum amplitude coefficient in the amplitude coefficient set to 1, normalizing the phase coefficient corresponding to the maximum amplitude coefficient to zero, or normalizing the wideband amplitude coefficient corresponding to the maximum amplitude coefficient, or the first wideband amplitude coefficient, or the second wideband amplitude coefficient to 1, or normalizing the wideband phase coefficient corresponding to the maximum amplitude coefficient to 0; or normalizing the difference amplitude coefficient with the maximum product value of the difference amplitude coefficient and the corresponding broadband amplitude coefficient to 1, normalizing the broadband amplitude coefficient to 1, and normalizing the phase coefficient corresponding to the difference amplitude coefficient to 0; or

Normalizing a maximum wideband amplitude coefficient of the set of wideband amplitude coefficients to 1, a maximum differential amplitude coefficient of a set of differential amplitude coefficients corresponding to the maximum wideband amplitude coefficient to 1, and a maximum phase coefficient corresponding to the maximum differential amplitude coefficient to zero; or

Normalizing a maximum wideband amplitude coefficient in the wideband amplitude coefficient set to 1, a maximum differential amplitude coefficient in the differential amplitude coefficient set to 1, and a maximum phase coefficient corresponding to the maximum differential amplitude coefficient to zero; or

Normalizing the largest first wideband amplitude coefficient in the first set of wideband amplitude coefficients to 1, the largest second wideband amplitude coefficient in the second set of wideband amplitude coefficients to 1, and normalizing the differential amplitude coefficient at the intersection of the row of the largest first wideband amplitude coefficient and the column of the largest second wideband amplitude coefficient to 1, and normalizing the phase coefficient at the intersection of the row of the largest first wideband amplitude coefficient and the column of the largest second wideband amplitude coefficient to zero; or

Normalizing a first wideband amplitude coefficient of a row where a maximum amplitude coefficient in the amplitude coefficient set is located to be 1, normalizing a second wideband amplitude coefficient of a column where the maximum amplitude coefficient is located to be 1, normalizing a differential amplitude coefficient of a position where the maximum amplitude coefficient is located to be 1, and normalizing a phase coefficient of the position where the maximum amplitude coefficient is located to be zero.

In this embodiment of the present application, before quantizing an amplitude coefficient in an amplitude coefficient set, a wideband amplitude coefficient in a wideband amplitude coefficient set, a differential amplitude coefficient in a differential amplitude coefficient set, a first wideband amplitude coefficient in a first wideband amplitude coefficient, and a second wideband amplitude coefficient in a second wideband amplitude coefficient, normalization processing may be further performed on the coefficients in the above sets, so as to reduce quantization complexity when quantization is performed by a terminal device.

Optionally, reporting information related to the quantized phase coefficient to a network device, including:

reporting the index of the maximum amplitude coefficient in the ordered amplitude coefficient set and all or part of quantized values of the phase coefficients except the quantized value of the phase coefficient corresponding to the index of the maximum amplitude coefficient to network equipment; or

Reporting the index of the maximum broadband amplitude coefficient in the sorted broadband amplitude coefficient set, the phase coefficient corresponding to the maximum differential amplitude coefficient, and the quantized value of the phase coefficient group corresponding to the broadband amplitude coefficient which is greater than zero in the sorted broadband amplitude coefficient set to network equipment; or

Reporting the indexes of the maximum broadband amplitude coefficients in the sorted broadband amplitude coefficient set, except the phase coefficient corresponding to the maximum differential amplitude coefficient and quantized values of other phase coefficients except the phase coefficient corresponding to a second amplitude coefficient to network equipment, wherein the second amplitude coefficient is an amplitude coefficient smaller than a preset value in the product of the broadband amplitude coefficients in the sorted broadband amplitude coefficient set and the differential amplitude coefficients in the quantized differential amplitude coefficient set; or

Reporting the index of the largest first broadband amplitude coefficient in the ordered first broadband amplitude coefficient set, the index of the largest second broadband amplitude in the ordered second broadband amplitude coefficient set, the phase coefficient corresponding to the difference amplitude coefficient at the intersection of the degree index of the largest first broadband amplitude and the index of the largest second broadband amplitude, and quantized values of other phase coefficients except the phase coefficient corresponding to a third amplitude coefficient to network equipment, wherein the third amplitude coefficient is an amplitude coefficient smaller than a preset value in the product of the first broadband amplitude coefficient in the ordered first broadband amplitude coefficient set, the second broadband amplitude coefficient set in the ordered second broadband amplitude coefficient set and the difference amplitude coefficient in the quantized difference amplitude coefficient set.

In this embodiment of the present application, the system may preset that the maximum amplitude coefficient in the amplitude coefficient set is 1, and the phase coefficient corresponding to the maximum amplitude coefficient is zero, so to reduce the feedback overhead of the terminal device, the terminal device may not report the quantized value of the maximum amplitude coefficient and the quantized value of the phase coefficient corresponding to the maximum amplitude coefficient, and report the index of the maximum amplitude coefficient and the index of the phase coefficient corresponding to the maximum amplitude coefficient.

In a second aspect, the present application provides an information sending method, which sends configuration information to a terminal device, where the configuration information is parameter information configured by a network device for the terminal device and used for quantizing phase coefficients in a phase coefficient set of a codebook;

receiving information related to a quantized phase coefficient set sent by the terminal device, wherein the quantized phase coefficient set is obtained by quantizing phase coefficients in the phase coefficient set of the codebook according to at least two different precisions by the terminal device according to the configuration information and an amplitude coefficient set of the codebook, wherein one phase coefficient in the phase coefficient set of the codebook is quantized according to one precision, the amplitude coefficient is used for representing the amplitude of an element of the codebook, and the phase coefficient is used for representing the phase of the element of the codebook.

Optionally, the configuration information includes a feedback mode in which the terminal device sends feedback information to the network device, where the feedback mode includes a first feedback mode and a second feedback mode, and a highest precision of a quantization mode corresponding to the first feedback mode is higher than a highest precision of a quantization mode corresponding to the second feedback mode.

In a third aspect, the present application provides a terminal device, a processor, configured to quantize phase coefficients in a phase coefficient set of a codebook according to at least two different precisions according to amplitude coefficients in the amplitude coefficient set of the codebook, where one phase coefficient is quantized according to one precision to obtain a quantized phase coefficient set, where an amplitude coefficient is used to represent amplitudes of elements in the codebook, and a phase coefficient is used to represent phases of the elements in the codebook;

and the transmitter is used for reporting the information related to the quantized phase coefficient set to network equipment.

Optionally, when the processor quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, the method is specifically configured to:

Optionally, the terminal device further includes:

the transceiver is configured to receive indication information sent by the network device, where the indication information is used to indicate a feedback mode in which a terminal device sends feedback information to the network device, and the feedback mode includes a first feedback mode and a second feedback mode, and a highest precision of a quantization manner corresponding to the first feedback mode is higher than a highest precision of a quantization manner corresponding to the second feedback mode;

when the processor quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, the method is specifically configured to:

Optionally, the processor is further configured to:

the transmitter is further configured to: and reporting information related to the quantized wideband amplitude coefficient set and information related to the quantized differential amplitude coefficient set to the network equipment.

Optionally, when the processor quantizes the phase coefficients in the phase coefficient set according to at least two different accuracies according to the quantized wideband amplitude coefficient set to obtain the quantized phase coefficient set, the method is specifically configured to:

Alternatively to this, the first and second parts may,

when the processor quantizes the phase coefficients in the phase coefficient set according to at least two accuracies according to the quantized first wideband amplitude coefficient set, the quantized second wideband amplitude coefficient set, and/or the quantized differential phase coefficient set to obtain the quantized phase coefficient set, the method is specifically configured to:

Optionally, the processor is further configured to:

Optionally, when the transmitter reports the information related to the quantized phase coefficient to a network device, the method is specifically configured to:

Reporting the index of the largest first broadband amplitude coefficient in the ordered first broadband amplitude coefficient set, the index of the largest second broadband amplitude in the ordered second broadband amplitude coefficient set, the phase coefficient corresponding to the difference amplitude coefficient at the intersection of the index of the largest first broadband amplitude and the index of the largest second broadband amplitude, and quantized values of other phase coefficients except the phase coefficient corresponding to a third amplitude coefficient to network equipment, wherein the third amplitude coefficient is an amplitude coefficient smaller than a preset value in the product of the difference amplitude coefficients in the quantized difference amplitude coefficient set in the ordered first broadband amplitude coefficient set.

In a fourth aspect, the present application provides a network device, where the transmitter is configured to send configuration information to a terminal device, where the configuration information is parameter information configured by the network device for the terminal device and used for quantizing phase coefficients in a phase coefficient set of a codebook; a receiver, configured to receive information related to a quantized phase coefficient set sent by the terminal device, where the quantized phase coefficient set is obtained by quantizing, by the terminal device, phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the configuration information and an amplitude coefficient set of the codebook, where one phase coefficient in the phase coefficient set of the codebook is quantized according to one precision, the amplitude coefficient is used to represent an amplitude of an element of the codebook, and the phase coefficient is used to represent a phase of the element of the codebook.

In a fifth aspect, the present application provides a terminal device, where the quantizing unit is configured to quantize, according to an amplitude coefficient in an amplitude coefficient set of a codebook, phase coefficients in a phase coefficient set of the codebook according to at least two different precisions, where one phase coefficient is quantized according to one precision to obtain a quantized phase coefficient set, where the amplitude coefficient is used to represent an amplitude of an element in the codebook, and the phase coefficient is used to represent a phase of the element in the codebook; and the reporting unit is used for reporting the information related to the quantized phase coefficient set to network equipment.

A sending unit, configured to send configuration information to a terminal device, where the configuration information is parameter information configured by the network device for the terminal device and used for quantizing phase coefficients in a phase coefficient set of a codebook;

a receiving unit, configured to receive information related to a quantized phase coefficient set sent by the terminal device, where the quantized phase coefficient set is obtained by quantizing, by the terminal device, phase coefficients in the phase coefficient set of the codebook according to at least two different accuracies according to the configuration information and an amplitude coefficient set of the codebook, where one phase coefficient in the phase coefficient set of the codebook is quantized according to one accuracy, the amplitude coefficient is used to represent an amplitude of an element of the codebook, and the phase coefficient is used to represent a phase of the element of the codebook.

Optionally, when the quantizing unit quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, the quantizing unit is specifically configured to:

Optionally, the terminal device further includes a receiving unit, configured to receive indication information sent by the network device, where the indication information is used to indicate a feedback mode in which the terminal device sends feedback information to the network device, and the feedback mode includes a first feedback mode and a second feedback mode, where a highest precision of a quantization manner corresponding to the first feedback mode is higher than a highest precision of a quantization manner corresponding to the second feedback mode;

when the quantization unit quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, the quantization unit is specifically configured to:

Optionally, the quantization unit is further configured to:

the reporting unit is further configured to:

Optionally, when the quantization unit quantizes the phase coefficients in the phase coefficient set according to at least two different accuracies according to the quantized wideband amplitude coefficient set to obtain the quantized phase coefficient set, the quantization unit is specifically configured to:

Alternatively to this, the first and second parts may,

when the quantization unit quantizes the phase coefficients in the phase coefficient set according to at least two accuracies according to the quantized first wideband amplitude coefficient set, the quantized second wideband amplitude coefficient set, and/or the quantized differential phase coefficient set to obtain the quantized phase coefficient set, the quantization unit is specifically configured to:

Optionally, the terminal device further includes:

a normalization unit, configured to normalize a maximum amplitude coefficient in the amplitude coefficient set to 1, normalize a phase coefficient corresponding to the maximum amplitude coefficient to zero, normalize a wideband amplitude coefficient corresponding to the maximum amplitude coefficient, or normalize a first wideband amplitude coefficient, or a second wideband amplitude coefficient to 1, and or normalize a wideband phase coefficient corresponding to the maximum amplitude coefficient to 0; or normalizing the difference amplitude coefficient with the maximum product value of the difference amplitude coefficient and the corresponding broadband amplitude coefficient to 1, normalizing the broadband amplitude coefficient to 1, and normalizing the phase coefficient corresponding to the difference amplitude coefficient to 0; or

Optionally, when the reporting unit reports the information related to the quantized phase coefficient to the network device, the reporting unit is specifically configured to:

In a sixth aspect, the present application provides a network device, where the sending unit is configured to send configuration information to a terminal device, where the configuration information is parameter information configured by the network device for the terminal device and used for quantizing phase coefficients in a phase coefficient set of a codebook;

In a seventh aspect, this application provides a computer storage medium storing computer software instructions for executing the functions of any one of the first aspect, the second aspect, and the second aspect, or a program related to a method for executing any one of the first aspect, the second aspect, and the second aspect.

In an eighth aspect, the present application provides a computer program product, which when being invoked by a computer, can enable the computer to execute the method according to any one of the first aspect, the method according to any one of the designs of the first aspect, and the method according to any one of the second aspect and the second aspect.

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 embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below 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 the drawings without creative efforts.

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;

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

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

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

fig. 5 is a schematic structural diagram of another terminal device provided in an embodiment of the present application;

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

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Hereinafter, some terms in the embodiments of the present invention are explained to facilitate understanding by those skilled in the art.

(1) The base station may also coordinate the management of attributes of the air interface, for example, the base station may include an evolved base station (NodeB or eNB or e-NodeB, evolution Node B) in a long term evolution (L ong telecommunications, L ttt translation &l &g t) system or an evolved L TE system (L TE-Advanced, L TE-a), or may also include a next generation Node B (next B, NG-NB) in a fifth generation mobile communication technology (5G) system, which is not limited by the embodiments of the present invention.

(2) Terminal devices, including devices providing voice and/or data connectivity to a User, such as may include a handheld Device with Wireless connectivity, or a processing Device connected to a Wireless modem, may communicate with a core Network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN, may include a User Equipment (UE), a Wireless Terminal Device, a Mobile Terminal Device, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile Station), a Remote Station (Remote Station), an Access Point (Access Point, AP), a Remote Terminal Device (Remote Terminal), an Access Terminal Device (Access Terminal), a User Terminal Device (User Terminal), a User Agent (User Agent), or User Equipment (User Equipment), and so on, such as may include a Mobile phone (or smart phone), a smart phone with smart phone capabilities, a smart phone with Wireless modem, a smart phone capability, a smart phone with Wireless modem, a Wireless Terminal Device (smart phone), a smart phone with Wireless modem, a Wireless Terminal Device, a Wireless Terminal (Wireless modem), a Wireless Terminal, a Wireless modem, a Wireless Network, or the like, and so on-phone, a Wireless Network, a Mobile Terminal Device, or so on-phone, a Wireless Network.

(3) In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified. Moreover, in the description of the embodiments of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and not for purposes of indicating or implying relative importance, nor for purposes of indicating or implying order.

The technical background of the embodiments of the present application is described below.

A TypeII codebook is defined in the NR system Rel-15, which is a way of linear combining based on beams within orthogonal beam groups, indicating rank1 and rank2 codebooks. For one subband, the rank1 codebook is expressed as:

the Rank2 codebook is expressed as:

wherein the content of the first and second substances,

l denote the orthogonal beams within a group,

representing orthogonal beams, r-0, 1 representing a first and a second polarization direction in a dual-polarized antenna array, l-0, 1 representing a layer.

Representing the broadband amplitude coefficients acting on the beam i, the polarization direction r and the layer l in the beam group;

representing the subband amplitude coefficients acting on the beam i, the polarization direction r and the layer l in the beam group; c. C_r,l,iWhich represents the subband phase coefficients acting on the beam i, the polarization direction r and the layer l in the beam group. Since the feedback of each sub-band includes both the sub-band phase coefficient and the sub-band amplitude coefficient, when the number of sub-bands is large, the terminal device needs a large feedback overhead to feedback the coefficients of all the sub-bands.

A low-overhead TypeII codebook is defined in Rel-16 of the NR system, and coefficients of each sub-band are compressed and fed back to a base station. Taking rank1 as an example, for all subbands, the TypeII codebook can be expressed as:

wherein, W₁Orthogonal combined wave included inThe bundle is the same as the TypeII codebook defined in Rel-15;

representing the compressed coefficient, p_i,jRepresenting the amplitude coefficient, c_i,jRepresenting a phase coefficient; w_fAnd representing a compressed base vector, wherein M base vectors are contained, the length of each vector is N, and the number of N is determined by the number of sub-bands.

The compressed coefficients need to be quantized and fed back to the network device. However, in the codebook structure for Rel-16, there is no quantization method for the compressed coefficients.

In view of this, an embodiment of the present application provides an information sending method, where a terminal device quantizes phase coefficients in a phase coefficient set of a codebook according to at least two kinds of precisions according to amplitude coefficients in the amplitude coefficient set of the codebook, so as to avoid redundancy caused by quantization of the phase coefficients in all the phase coefficient sets according to the same quantization mode, and thus, overhead of feedback of the terminal device can be reduced.

Please refer to fig. 1, which is an application scenario of the present application. Fig. 1 includes a base station and terminal devices located within the coverage area of the base station. The terminal equipment sends information related to the codebook to the base station, and the base station configures a precoding matrix for downlink data transmission according to the information related to the codebook sent by the terminal equipment.

In the following description, the technical solution provided by the embodiment of the present application is applied to the application scenario shown in fig. 1 as an example, and a network device is a base station as an example.

Referring to fig. 2, an embodiment of the present application provides an information sending method, where a flow of the method is described as follows:

s201: the base station sends configuration information to the terminal equipment, wherein the configuration information is parameter information which is configured for the terminal equipment by the network equipment and is used for quantizing phase coefficients in a phase coefficient set of a codebook.

Here, it should be noted that this step is not a necessary step in the embodiment of the present application. Step S201 will be explained in detail below with reference to a specific implementation manner of step S202, which is not described herein again.

S202: the terminal equipment quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook, wherein one phase coefficient is quantized according to one precision to obtain the quantized phase coefficient set, wherein the amplitude coefficient is used for representing the amplitude of the elements in the codebook, and the phase coefficient is used for representing the phase of the elements in the codebook.

In the embodiment of the present application, taking the codebook structure in (3) as an example, the amplitude coefficient set of the codebook may represent:

{p_0,0p_0,1… p_0,M-1p_1,0p_1,1… p_1,M-1… p_2L-1,0p_2L-1,1… p_2L-1,M-1the set of phase coefficients of the codebook may be denoted as { c }₀,₀c_0,1… c_0,M-1c_1,0c_1,1… c_1,M-1… c_2L-1,0c_2L-1,1…c_2L-1,M-1}。

The precision refers to a quantization precision, and for example, a quantization precision of a quantization method using 8PSK (Phase Shift Keying) is 3 bits, and a quantization precision of a quantization method using QPSK (Quadrature Phase Shift Keying) is 2 bits. In the embodiment of the application, the phase coefficients in the phase coefficient set are quantized according to at least two different accuracies, so that redundancy caused by the fact that all the phase coefficients in the phase coefficient set are quantized according to the same accuracy is avoided, and the feedback overhead of the terminal equipment can be reduced.

Specifically, the terminal device may quantize the amplitude coefficients in the amplitude coefficient set by using a quantization method with the same precision to obtain a quantized amplitude coefficient set, for example, using a 3-bit quantization method or a 2-bit quantization method, or using another quantization method, where the quantization method may be defined by the system or indicated by the base station.

After the terminal device quantizes the amplitude coefficients in the amplitude coefficient set, the phase coefficients in the phase coefficient set are quantized according to at least two kinds of precision according to the quantized amplitude coefficient set.

Implementation mode one

The terminal equipment arranges the quantized amplitude coefficients in a descending order to obtain a sorted amplitude coefficient set; the terminal equipment divides the amplitude coefficients in the ordered amplitude coefficient set into T groups of amplitude coefficients according to the order of arrangement, and quantizes the T groups of phase coefficients corresponding to the T groups of amplitude coefficients according to T kinds of precision to obtain a quantized phase coefficient set;

For example, the terminal device may also arrange the quantized amplitude coefficients in order from small to large to obtain an ordered amplitude coefficient set, divide the amplitude coefficients in the ordered amplitude coefficient set into T groups of amplitude coefficients according to the order of arrangement, and quantize T groups of phase coefficients corresponding to the T groups of amplitude coefficients according to T kinds of precision to obtain a quantized phase coefficient set; wherein, the T kinds of precision are sequentially increased according to the index sequence of T, and T is an integer more than or equal to 2.

T may be preset by the system, configured by the base station, or determined by the terminal device itself. It should be noted here that when T is configured by the base station, T is sent to the terminal device by the base station through the configuration information in step S201. Of course, in the embodiment of the present application, the number of amplitude coefficients in each group of amplitude coefficients in the T groups of amplitude coefficients may also be preset, for example, may be preset by a system, may be configured by a base station, or may be determined by the terminal device itself; the number of amplitude coefficients in each of the T sets of amplitude coefficients may also be random. The number of amplitude coefficients in each group of amplitude coefficients in the T groups of amplitude coefficients may be the same or different, and is not limited herein.

In a specific implementation process, with T being 2, the number of amplitude coefficients in a group of amplitude coefficients is 3, the terminal device arranges quantized amplitude coefficients in an order from large to small as an example, the terminal device divides phase coefficients corresponding to the first 3 quantized amplitude coefficients into a group, which is denoted as group 1, and divides phase coefficients corresponding to the remaining quantized amplitude coefficients in the ordered set of amplitude coefficients into a group, which is denoted as group 2. For example, the first 3 quantized amplitude coefficients in the ordered set of amplitude coefficients are p_1,0、p_1,M-1And p_2L-1,1Then the corresponding phase coefficient c_1,0、c_1,M-1And c_2L-1,1Grouping the set of phase coefficients into a group and quantizing the group of phase coefficients to one precision, grouping the other phase coefficients in the set of phase coefficients into a group and quantizing the group of phase coefficients to another precision. As an example, the phase coefficients in group 1 are quantized with 3bit precision, i.e. 8PSK, and the phase coefficients in group 2 are quantized with 2bit, i.e. QPSK, as another example, the phase coefficients in group 1 are quantized with 4bit precision, i.e. 16PSK, and the phase coefficients in group 2 are quantized with 3bit, i.e. QPSK.

S203: and the terminal equipment reports the information related to the quantized phase coefficient set to the base station.

Specifically, the terminal device may report all or part of the quantized phase coefficient set to the base station; or reporting the index of the maximum amplitude coefficient and all or part of the quantized values of the phase coefficients except the quantized value of the phase coefficient corresponding to the index of the maximum amplitude coefficient to the base station.

Here, the system may preset that the maximum amplitude coefficient in the quantized amplitude coefficient set is 1, and may report only the index of the maximum amplitude coefficient without reporting the maximum amplitude coefficient to reduce the feedback overhead of the terminal device, and in order to further reduce the feedback overhead of the terminal device, the quantized value of the phase coefficient smaller than the threshold value except the quantized value of the phase coefficient corresponding to the index of the maximum amplitude coefficient is also not reported to the base station.

Similarly, the terminal device may report all or part of the quantized amplitude coefficient set to the base station; or reporting all or part of the amplitude coefficients except the maximum amplitude coefficient in the quantized amplitude coefficient set to the base station.

Implementation mode two

The base station sends indication information to the terminal equipment, wherein the indication information is used for indicating a feedback mode of sending feedback information to the base station by the terminal equipment, the feedback mode comprises a first feedback mode and a second feedback mode, and the highest precision of a quantization mode corresponding to the first feedback mode is higher than that of a quantization mode corresponding to the second feedback mode;

and the terminal equipment quantizes the phase coefficient in the phase coefficient set according to at least two different accuracies according to the indication information sent by the base station and the amplitude coefficient in the amplitude coefficient set so as to obtain the quantized phase coefficient.

Here, the indication information transmitted from the base station to the terminal device means information included in the configuration information transmitted from the base station to the terminal device in step S201.

In a specific implementation process, the quality of the channel may affect the quality of the base station receiving the feedback information sent by the terminal device, so that, to ensure the quality of the base station receiving the feedback information sent by the terminal device, the base station may determine a feedback mode in which the terminal device sends the feedback information to the base station. For example, when the channel quality is poor, the base station may instruct the terminal device to transmit the feedback information to the base station in the first feedback mode, and when the channel quality is good, the base station may instruct the terminal device to transmit the feedback information to the base station in the second feedback mode. And the highest precision of the quantization mode corresponding to the first feedback mode is higher than that of the quantization mode corresponding to the second feedback mode. For example, the quantization modes corresponding to the first feedback mode are 16PSK and QPSK, the quantization modes corresponding to the second feedback mode are 8PSK and QPSK, and the highest precision of the quantization mode corresponding to the first feedback mode is 4 bits and higher than the highest precision of the quantization mode corresponding to the second feedback mode is 3 bits. Therefore, by implementing the second implementation manner, the feedback overhead of the terminal device can be reduced on the premise of ensuring the quality of the information received by the base station.

After receiving the indication information sent by the base station, the terminal device quantizes the phase coefficients in the phase coefficient set according to at least two kinds of precision according to the indication information and the amplitude coefficient set.

Specifically, if the indication information sent by the base station is used to indicate the terminal device to send information to the base station in the first feedback mode, the terminal device groups the phase coefficients in the phase coefficient set according to the quantized amplitude coefficient set, and the grouping manner here is the same as the first implementation manner. Continuing with the example in implementation one, after the terminal device divides the phase coefficients in the phase coefficient set into group 1 and group 2, the phase coefficients in group 1 are quantized in a quantization manner corresponding to the first feedback mode, for example, 16PSK, and the phase coefficients in group 2 are quantized in a quantization manner corresponding to the second feedback mode, for example, QPSK.

If the indication information sent by the base station is used for indicating the terminal device to send information to the base station in the second feedback mode, after the terminal device groups the phase coefficients in the phase coefficient set according to the quantized amplitude coefficient set, the grouping mode here is the same as the first implementation mode, and is not repeated here. Continuing with the example in implementation one, after the terminal device divides the phase coefficients in the phase coefficient set into group 1 and group 2, the phase coefficients in group 1 are quantized in a quantization manner corresponding to the first feedback mode, for example, 8PSK, and the phase coefficients in group 2 are quantized in a quantization manner corresponding to the second feedback mode, for example, QPSK.

After the terminal device quantizes the phase coefficients in the phase coefficient set, it is necessary to report information related to the quantized phase coefficient set and information related to the quantized amplitude coefficient set to the base station, where the manner of reporting information by the terminal device is the same as the first implementation manner, and is not described in detail herein.

Implementation mode three

The terminal equipment determines a broadband amplitude coefficient set of the codebook according to the amplitude coefficient set and the phase coefficient set; according to the quantized broadband amplitude coefficient set, quantizing the phase coefficients in the phase coefficient set according to at least two different precisions to obtain a quantized phase coefficient set; wherein one wideband amplitude coefficient in the wideband amplitude coefficient set corresponds to one beam for linear combination in a codebook or corresponds to one basis vector for frequency domain compression in a codebook.

In the third implementation manner, one wideband amplitude coefficient in the wideband amplitude coefficient set may correspond to one beam in the codebook for linear combining, and may also correspond to one base vector in the codebook for frequency domain compression, which are respectively described below.

1. One wide-band amplitude coefficient corresponding to one beam

In this implementation, the coefficients are combined

Expressed as:

wherein, the matrix

Set of diagonal elements of

For a wideband amplitude coefficient set of the codebook, one beam i (i ═ 0,1, …, 2L-1) corresponds to one wideband amplitude coefficient in the wideband amplitude coefficient set

Corresponding to a set of difference amplitude coefficients

And a set of phase coefficients c_i,0c_i,1… c_i,M-1}。

Here, the wide-band amplitude coefficient

The calculation methods of (a) include, but are not limited to, the following, which are described below.

In a first mode

The value of one wideband amplitude coefficient in the wideband amplitude coefficient set is the maximum value in the amplitude coefficient group corresponding to one beam. That is, the maximum value of the amplitude coefficient in the set of amplitude coefficients corresponding to each of the beams can be expressed as follows:

mode two

The value of one wideband amplitude coefficient in the wideband amplitude coefficient set is the average value of the values of the amplitude coefficients in the amplitude coefficient group corresponding to one beam. That is, the average value of the amplitude coefficients in the set of amplitude coefficients corresponding to each beam in the beam can be expressed as follows:

mode III

The value of one of the set of wideband amplitude coefficients is a value determined based on wideband channel characteristics. I.e. the projection of the wideband eigenvector on the beam obtained from the wideband channel correlation matrix.

Accordingly, the difference amplitude coefficient can be calculated by, for example,

in this embodiment of the present application, to further reduce the feedback overhead of the terminal device, before quantizing the wideband amplitude coefficient set, the differential amplitude coefficient set, and the phase coefficient set, normalization processing may be performed on the wideband amplitude coefficient set, the differential amplitude coefficient set, and the phase coefficient set, where the normalization processing manners include, but are not limited to, the following two manners, which are respectively described below.

Normalization method one

The maximum wideband amplitude coefficient in the wideband amplitude coefficient set is normalized to 1, the maximum differential amplitude coefficient in the differential amplitude coefficient group corresponding to the maximum wideband amplitude coefficient is normalized to 1, and the phase coefficient corresponding to the maximum differential amplitude coefficient is normalized to zero.

Specifically, if the maximum wideband amplitude coefficient in the wideband amplitude coefficient set is

Then, the normalized wideband amplitude coefficient in the wideband amplitude coefficient set can be expressed as the following expression:

the set of differential amplitude coefficients corresponding to the largest wideband amplitude coefficient is

If the maximum difference amplitude coefficient in the difference amplitude coefficient group is

The phase coefficient corresponding to the maximum difference amplitude coefficient is c_1,1Then the normalized difference amplitude coefficient set and phase coefficient set can be expressed as the following equation:

normalization method two

The maximum wideband amplitude coefficient in the wideband amplitude coefficient set is normalized to 1, the maximum differential amplitude coefficient in the differential amplitude coefficient set is normalized to 1, and the phase coefficient corresponding to the maximum differential amplitude coefficient is normalized to zero.

The wideband amplitude coefficient set may be represented as the above equation (8) after being normalized, and will not be described herein again. The difference amplitude coefficient set may be normalized as follows, specifically, if the maximum difference coefficient is

The phase coefficient corresponding to the maximum difference coefficient is c_0,1Then the normalized difference amplitude coefficient set and phase coefficient set can be expressed as the following equation:

normalization method three

The wideband amplitude coefficient corresponding to the maximum amplitude coefficient is normalized by one.

Specifically, the maximum amplitude coefficient in the amplitude coefficient set is p_1,0The wide-band amplitude coefficient corresponding to the maximum amplitude coefficient is

The wideband amplitude coefficient set can be expressed as equation (8) after being normalized, and will not be described in detail here. In the third normalization mode, for the normalization of the difference amplitude coefficient set, the normalization mode in the first normalization mode may be adopted, and the normalization mode in the second normalization mode may also be adopted, which is not limited herein.

After determining the wideband amplitude coefficient set of the codebook and before quantizing the differential amplitude coefficient set and the phase coefficient set, the wideband amplitude coefficient set of the codebook needs to be quantized first to obtain a quantized wideband amplitude coefficient set, for example, the quantized wideband amplitude coefficient set is quantized in a 3-bit quantization manner or a 2-bit quantization manner, or quantized in other quantization manners, which may be defined by the system or indicated by the base station.

After obtaining the quantized broadband amplitude coefficient set, the terminal equipment arranges the quantized broadband amplitude coefficients in a descending order to obtain a sorted broadband amplitude coefficient set; and dividing the broadband amplitude coefficients in the sorted broadband amplitude coefficient set into S groups of broadband amplitude coefficients according to the sorting order, and quantizing the S groups of phase coefficients corresponding to the S groups of broadband amplitude coefficients according to S types of precision to obtain a quantized phase coefficient set.

For example, the terminal device may also arrange the quantized wideband amplitude coefficients in order from small to large to obtain an ordered wideband amplitude coefficient set, divide the wideband amplitude coefficients in the ordered wideband amplitude coefficient set into S groups of amplitude coefficients according to the order of arrangement, and quantize the S groups of phase coefficients corresponding to the S groups of wideband amplitude coefficients according to S kinds of precision to obtain a quantized phase coefficient set; and the S kinds of precision are sequentially increased according to the index sequence of S, and S is an integer greater than or equal to 2.

S may be preset by the system, configured by the base station, or determined by the terminal device itself. It should be noted here that when S is configured by the base station, S is sent to the terminal device by the base station through the configuration information in step S201. Of course, in the embodiment of the present application, the number of amplitude coefficients in each group of amplitude coefficients in the S groups of wideband amplitude coefficients may also be preset, for example, may be preset by a system, may be configured by a base station, or may be determined by the terminal device itself; the number of amplitude coefficients in each set of amplitude coefficients in the S sets of amplitude coefficients may also be random. The number of amplitude coefficients in each group of amplitude coefficients in the S groups of amplitude coefficients may be the same or different, and is not limited herein.

In a specific implementation process, S is 2, where the number of wideband amplitude coefficients in a group of wideband amplitude coefficients is 2, the terminal device ranks quantized wideband amplitude coefficients in an order from large to small as an example, and the terminal device ranks the first 2 quantized wideband amplitude coefficients corresponding to the wideband amplitude coefficientsThe phase coefficients are grouped into a group, denoted as group a, and the phase coefficients corresponding to the remaining quantized wideband amplitude coefficients in the ordered set of wideband amplitude coefficients are grouped into a group, denoted as group B. For example, the first 2 bits of quantized wideband amplitude coefficients in the ordered set of wideband amplitude coefficients are

And

the corresponding phase coefficient c_1,0c_1,1… c_1,M-1And { c }and_3,0c_3,1… c_3,M-1The group is quantized with one precision, the other phase coefficients in the set of phase coefficients are grouped into one group, and the group is quantized with another precision, as an example, the phase coefficients in group a are quantized with 3bit precision, i.e., 8PSK, the phase coefficients in group B are quantized with 2bit, i.e., QPSK, and as another example, the phase coefficients in group a are quantized with 4bit precision, i.e., 16PSK, and the phase coefficients in group B are quantized with 3bit, i.e., QPSK.

Continuing with the above example, the terminal device may further quantize the differential amplitude coefficient set according to the quantized wideband amplitude coefficient set. Specifically, the differential amplitude coefficients corresponding to the first 2 quantized wideband amplitude coefficients are grouped into one group, and the differential amplitude coefficients corresponding to the remaining quantized wideband amplitude coefficients in the sorted wideband amplitude coefficient set are grouped into one group. For example, the first 2 quantized wideband amplitude coefficients in the ordered set of wideband amplitude coefficients are

And

the corresponding differential amplitude coefficient

And difference amplitude coefficient

Grouping the set of differential amplitude coefficients into a group, quantizing the group of differential amplitude coefficients with one precision, grouping the other differential amplitude coefficients in the set of differential amplitude coefficients into a group, and quantizing the group of differential amplitude coefficients with another precision. As an example, the differential amplitude coefficients of the first group are quantized with 3bit precision and the differential amplitude coefficients of the second group are quantized with 2bit precision, and as another example, the differential amplitude coefficients of the first group are quantized with 4bit precision and the differential amplitude coefficients of the second group are quantized with 3bit precision.

In order to further reduce the feedback overhead of the terminal equipment, the median of the corresponding differential amplitude coefficient group in each group of phase coefficients in the S groups of phase coefficients is front D_sAnd S is 1, …, the phase coefficient of S is quantized by high precision quantization method, and the rest phase coefficients are quantized by low precision quantization method. Wherein D is_sHave different values.

Continuing with the example above, with S ═ 2, where the number in a set of wideband amplitude coefficients is 1, D₁Take 4 as an example. The terminal equipment determines the maximum broadband amplitude coefficient in the quantized broadband amplitude coefficients as

The difference amplitude coefficient corresponding to the maximum wideband amplitude coefficient is

The corresponding phase coefficient is { c }_1,0c_1,1… c_1,M-1Will further, if the difference magnitude coefficient

The difference amplitude coefficient whose middle value is the top 4 is

The phase coefficient c_1，0c_1，1… c_1，M-1The phase coefficients in the method are divided into two groups, corresponding to the differential amplitude coefficients

Is divided into a group, the group of phase coefficients is quantized with a high precision quantization, e.g. 8PSK, and the phase coefficients { c }_1,0c_1,1… c_1,M-1The remaining phase coefficients in the constellation are quantized with a low precision quantization, e.g. QPSK.

The number of the broadband amplitude coefficients in the other group of broadband amplitude coefficients is 2L-1, and the broadband amplitude coefficients are

D₂2 for example, the wide-band amplitude coefficient

Corresponding to a difference amplitude coefficient of

The corresponding phase coefficient is { c }_0，0c_0，1… c_0，M-1And then, the difference amplitude coefficient with the value of the top 2 in the difference amplitude coefficients is paired

Corresponding phase coefficient c_0，0c_0，1Quantising the phase coefficients c according to a high-precision quantisation, e.g. 8PSK_0,0c_0,1… c_0,M-1The remaining phase coefficients in the constellation are quantized with a low precision quantization, e.g. QPSK.

After the terminal device quantizes the wideband amplitude coefficient set, the differential amplitude coefficient set, and the phase coefficient set, it needs to report information related to the quantized wideband amplitude coefficient set, information related to the quantized differential amplitude coefficient set, and information related to the quantized differential amplitude coefficient set to the base station, which are described below.

Specifically, reporting the index of the maximum wideband amplitude coefficient in the sorted wideband amplitude coefficient set and the quantized value of the phase coefficient group corresponding to the wideband amplitude coefficient greater than zero in the sorted wideband amplitude coefficient set except the phase coefficient corresponding to the maximum difference amplitude coefficient to the base station; or reporting the indexes of the maximum broadband amplitude coefficient in the sorted broadband amplitude coefficient set, the quantized values of the phase coefficients except the phase coefficient corresponding to the maximum difference amplitude coefficient and the quantized values of other phase coefficients except the phase coefficient corresponding to the second amplitude coefficient to the network equipment, wherein the second amplitude coefficient is the amplitude coefficient which is smaller than a preset value in the product of the broadband amplitude coefficient and the difference amplitude coefficient set.

Here, the system may preset that a maximum wideband amplitude coefficient in the quantized wideband amplitude coefficient set is 1, and a differential amplitude coefficient corresponding to the maximum wideband amplitude coefficient is 1, and may only report an index of the maximum wideband amplitude coefficient and an index of the maximum differential amplitude coefficient without reporting the maximum wideband amplitude coefficient and the maximum differential amplitude coefficient, so as to reduce feedback overhead of the terminal device, and in order to further reduce feedback overhead of the terminal device, a quantized value of a phase coefficient equal to zero except for a quantized value of a phase coefficient corresponding to the index of the maximum differential amplitude coefficient is also not reported to the base station, or a quantized value of a phase coefficient corresponding to an amplitude coefficient whose amplitude coefficient is smaller than a preset value is also reported to the base station.

Similarly, the terminal device may report all or part of the quantized wideband amplitude coefficient set to the base station; or reporting all or part of the broadband amplitude coefficients except the maximum broadband amplitude coefficient in the quantized broadband amplitude coefficient set to the base station.

The terminal equipment can report all or part of the quantized difference amplitude coefficient set to the base station; or reporting all or part of the differential amplitude coefficients except the maximum differential amplitude coefficient in the quantized broadband amplitude coefficient set to the base station.

Here, it should be noted that, here, the terminal device may also quantize the phase coefficients in the phase coefficient set according to at least two different accuracies according to the quantized wideband amplitude coefficient set and the quantized differential amplitude coefficient set. Specifically, the terminal device multiplies the wideband amplitude coefficient in the quantized wideband amplitude coefficient set by the differential amplitude coefficient in the quantized differential amplitude coefficient set to obtain a fourth amplitude coefficient set, arranges the amplitude coefficients in the fourth amplitude coefficient set from large to small to obtain a sorted fourth amplitude coefficient set, and quantizes the phase coefficient in the phase coefficient set according to at least two kinds of precision according to the amplitude coefficients in the sorted fourth amplitude coefficient set. For example, the amplitude coefficients in the sorted fourth set of amplitude coefficients are divided into two groups according to the sorting order, the phase coefficients corresponding to the first group are quantized with high precision, such as 8PSK, and the phase coefficients corresponding to the second group are quantized with low precision, such as QPSK. And will not be described in detail herein. In this implementation, after the phase coefficients in the phase coefficient sets are quantized, the terminal device may report quantized values of the largest wideband amplitude coefficient in the ordered first wideband amplitude coefficient set, excluding the phase coefficient corresponding to the largest difference amplitude coefficient and excluding the phase coefficient corresponding to the first amplitude coefficient, to the base station, where the first amplitude coefficient is an amplitude coefficient smaller than a preset value in a product of the wideband amplitude coefficient and the difference amplitude coefficient set.

2. A wide-band amplitude coefficient corresponds to a basis vector

In this implementation, the coefficients are combined

Expressed as:

wherein, the matrix

Set of diagonal elements of

For a wideband amplitude coefficient set of a codebook, a basis vector i (i ═ 0,1, …, M-1) corresponds to a wideband amplitude coefficient in the wideband amplitude coefficient set

Corresponding to a set of difference amplitude coefficients

And a set of phase coefficients c_0,ic_1,i… c_M-1,i}。

The calculation mode of the wideband amplitude coefficient and the calculation mode of the differential amplitude coefficient corresponding to one base vector here, and the normalization mode and the quantization mode of the wideband amplitude coefficient set, the differential amplitude coefficient set and the phase coefficient set are the same as those in 1, and are not described in detail here.

Implementation mode four

The terminal equipment determines a wideband amplitude coefficient set of a codebook, a wideband phase coefficient set of the codebook and a differential phase coefficient set of the codebook according to the amplitude coefficient set and the phase coefficient set; and the terminal equipment quantizes the broadband phase coefficient in the broadband phase coefficient set and the differential phase coefficient in the differential phase coefficient set according to at least two different precisions according to the quantized broadband amplitude coefficient set so as to obtain the quantized broadband phase coefficient set and the quantized differential phase coefficient set.

In this implementation, the coefficients are combined

Expressed as:

wherein, the matrix

Set of diagonal elements of

Is a set of wideband amplitude coefficients of a codebook,

for the wideband phase coefficient set of the codebook, one beam i (i ═ 0,1, …, 2L-1) (i ═ 0,1, …, 2L-1) corresponds to one wideband amplitude coefficient in the wideband amplitude coefficient set

Corresponding to a set of difference amplitude coefficients

And a set of phase coefficients c_i,0c_i,1… c_i,M-1}。

In the fifth implementation manner, the calculation manner of one wideband amplitude coefficient in the set of wideband amplitude coefficients is the same as the calculation manner of the three wideband amplitude coefficients in the fifth implementation manner, and details are not repeated here.

One of the wideband phase coefficients in the set of wideband phase coefficients may be calculated as follows, each as described below.

Mode A

The value of one broadband phase coefficient in the broadband phase coefficient set is the phase coefficient corresponding to the maximum amplitude coefficient in the amplitude coefficient group corresponding to one beam. That is, the maximum value of the amplitude coefficient in the amplitude coefficient group corresponding to each beam can be expressed as follows:

wherein the maximum amplitude coefficient

Mode B

The value of one wideband phase coefficient in the wideband phase coefficient set is the average value of the phase coefficient values in the phase coefficient group corresponding to one beam. I.e., determined from the average of the phase coefficients in the phase coefficient set corresponding to each beam, can be expressed as follows:

mode C

The value of one of the wideband phase coefficients in the set of wideband phase coefficients is a value determined based on wideband channel characteristics.

Accordingly, the differential phase coefficient can be calculated by the following formula:

after determining the wideband amplitude coefficient set, the differential amplitude coefficient set, the wideband phase coefficient set and the differential phase coefficient set, quantizing the wideband amplitude coefficient set, the wideband phase coefficient set and the differential phase coefficient set according to at least two precisions according to the quantized wideband amplitude coefficient set, wherein the quantization process is the same as the quantization mode in the implementation mode three (1), and details are not repeated here. Meanwhile, here, the normalization processing on the wideband amplitude coefficient set, the differential amplitude coefficient set, the wideband phase coefficient set, and the differential phase coefficient set is also the same as the normalization method in the implementation method three (1), and details are not repeated here.

Implementation mode five

The terminal equipment determines a first wideband amplitude coefficient set of the codebook, a second wideband amplitude coefficient set of the codebook and a differential amplitude coefficient set of the codebook according to the amplitude coefficient set and the phase coefficient set; wherein one first wideband amplitude coefficient in the first wideband amplitude coefficient set corresponds to one beam for linear combination in the codebook, and one second wideband amplitude coefficient in the second wideband amplitude coefficient set corresponds to one base vector for frequency domain compression in the codebook; and quantizing the phase coefficients in the phase coefficient set according to at least two precisions according to the quantized first wideband amplitude coefficient set, the quantized second wideband amplitude coefficient set and/or the quantized differential amplitude coefficient set so as to obtain the quantized phase coefficient set and the position and the number of the phase coefficients with the value of zero.

In this implementation, the coefficients are combined

Expressed as:

wherein, the matrix

Set of diagonal elements of

For a first set of wideband amplitude coefficients of the codebook, one beam i (i ═ 0,1, …, 2L-1) corresponds to one first wideband amplitude coefficient of the first set of wideband amplitude coefficients

Matrix array

Set of diagonal elements of

For the second set of wideband amplitude coefficients of the codebook, one basis vector i (i ═ 0,1, …, M-1) corresponds to one of the second set of wideband amplitude coefficients.

Here, the first wideband amplitude coefficient in the first wideband amplitude coefficient set is calculated in the same manner as the wideband amplitude coefficient calculated in implementation mode 1, and here, the second wideband amplitude coefficient in the second wideband amplitude coefficient set is calculated in the same manner as the wideband amplitude coefficient calculated in implementation mode 2. In a specific implementation process, the first wideband amplitude coefficient set may be calculated first, and then the second wideband amplitude coefficient set is calculated, or the second wideband amplitude coefficient set may be calculated first, and then the first wideband amplitude coefficient set is calculated, which is not limited in this embodiment of the application.

The difference amplitude coefficient can be obtained by calculating according to the following formula:

in this embodiment of the present application, to further reduce feedback overhead of the terminal device, before quantizing the first wideband amplitude coefficient set, the second wideband amplitude coefficient set, the differential amplitude coefficient set, and the phase coefficient set, the first wideband amplitude coefficient set, the second wideband amplitude coefficient set, the differential amplitude coefficient set, and the phase coefficient set may be normalized, where the normalization processing manners referred to herein include, but are not limited to, the following implementation manners, which are respectively described below.

Normalization mode A

The terminal device normalizes a maximum first broadband amplitude coefficient in the first broadband amplitude coefficient set to 1, normalizes a maximum second broadband amplitude coefficient in the second broadband amplitude coefficient set to 1, normalizes a difference amplitude coefficient at an intersection point of a row where the maximum first broadband amplitude coefficient is located and a column where the maximum second broadband amplitude coefficient is located to 1, and normalizes a phase coefficient at an intersection point of the row where the maximum first broadband amplitude coefficient is located and the column where the maximum second broadband amplitude coefficient is located to zero.

In a specific implementation process, if the largest first wideband amplitude coefficient in the first wideband amplitude coefficient set is

The largest second wideband amplitude coefficient of the second set of wideband amplitude coefficients is

Then

c_1,1＝1。

Normalization mode B

The terminal equipment normalizes a first broadband amplitude coefficient of a row where a maximum amplitude coefficient in the amplitude coefficient set is located to be 1, normalizes a second broadband amplitude coefficient of a column where the maximum amplitude coefficient is located to be 1, normalizes a difference amplitude coefficient of the position where the maximum amplitude coefficient is located to be 1, and normalizes a phase coefficient of the position where the maximum amplitude coefficient is located to be zero.

In the specific implementation process, if the amplitude coefficient set { p }_0,0p_0,1… p_0,M-1p_1,0p_1,1… p_1,M-1…p_2L-1,0p_2L-1,1… p_2L-1,M-1The maximum amplitude coefficient in (f) is p_2L-1,1Then there is

c_2L-1,1＝1。

After the first wideband amplitude coefficient set and the second wideband amplitude coefficient set are determined, the first wideband amplitude coefficient set, the second wideband amplitude coefficient set, and the differential amplitude coefficient set are quantized, specifically, the terminal device may quantize the first wideband amplitude coefficient in the first wideband amplitude coefficient set in a quantization manner with the same precision, quantize the second wideband amplitude coefficient in the second wideband amplitude coefficient set in a quantization manner with the same precision, quantize the differential amplitude coefficients in the differential amplitude coefficient set in a quantization manner with the same precision, to obtain the quantized first wideband amplitude coefficient set, the quantized second wideband amplitude coefficient set, and the quantized differential amplitude coefficient set, for example, in a 3-bit quantization manner, or in a 2-bit quantization manner, or in other quantization manners, the quantization mode may be system defined or indicated by the base station.

The terminal device arranges the quantized first broadband amplitude coefficients in a descending order to obtain an ordered first broadband amplitude coefficient set, arranges the quantized second broadband amplitude coefficients in a descending order to obtain an ordered second broadband amplitude coefficient set, quantizes the phase coefficients corresponding to the first Q second broadband amplitude coefficients in the ordered second broadband amplitude coefficient set in a first quantizing manner in a P group of phase coefficients corresponding to the first P first broadband amplitude coefficients in the ordered first broadband amplitude coefficient set, sets the quantized phase coefficients corresponding to the second broadband amplitude coefficients in a 2-2L-P group of phase coefficients corresponding to the first 2-2L-P first broadband amplitude coefficients in the ordered first broadband amplitude coefficient set to be greater than the quantized phase coefficients in a second quantizing manner, sets the quantized phase coefficients corresponding to the second broadband amplitude coefficients in the 2-L-P group of phase coefficients in the ordered first broadband amplitude coefficient set to be greater than or equal to the quantized phase coefficients in an integer quantization manner, sets the quantized phase coefficients in the second broadband amplitude coefficients are greater than or equal to the quantized phase coefficients in the second broadband amplitude coefficients, and sets are set to obtain quantized phase coefficients with integer precision greater than or equal to M1.

P and Q may be predefined by the system, configured by the base station for the terminal device, or determined by the terminal device itself. It should be noted here that, when P and Q are configured by the base station, P and Q are sent to the terminal device by the base station through the configuration information in step S201.

In a specific implementation process, taking P ═ 1 and Q ═ 1 as examples, the largest first wideband amplitude coefficient in the quantized first wideband amplitude coefficients is

The largest second wideband amplitude coefficient of the quantized second wideband amplitude coefficients is

Will correspond to

Phase coefficient { c }_1,0c_1,1… c_1,M-1And

corresponding phase coefficient c_0,0c_1,0… c_2L-1,0The phase coefficient c at the intersection of_1,1And setting the phase coefficient at the intersection point of the phase coefficient group corresponding to the last M-1 second broadband amplitude coefficients in the correspondingly quantized second broadband amplitude coefficients in the quantized phase coefficient groups corresponding to the last 2L-1 first broadband amplitude coefficients as zero, and quantizing other phase coefficients in the phase coefficient set by adopting a second quantization mode, wherein the QPSK is taken as an example.

In this implementation, the quantization mode for the differential amplitude coefficient set and the quantization mode for the phase coefficient set are not described in detail here.

After the terminal device quantizes the first wideband amplitude coefficient set, the second wideband amplitude coefficient set, the differential amplitude coefficient set, and the phase coefficient set, it needs to report information related to the quantized first wideband amplitude coefficient set, information related to the quantized second wideband amplitude coefficient set, information related to the quantized differential amplitude coefficient set, and information related to the quantized differential amplitude coefficient set to the base station, which are described below.

Specifically, the terminal device may report all or part of the quantized phase coefficient set to the base station; or reporting all or part of other phase coefficients except the phase coefficient corresponding to the differential amplitude coefficient of the row where the maximum first broadband amplitude coefficient is located and the column where the maximum second broadband amplitude coefficient is located in the index of the maximum first broadband amplitude coefficient in the ordered first broadband amplitude coefficient set and the index of the maximum second broadband amplitude coefficient in the ordered second broadband amplitude coefficient set to the base station.

Similarly, the terminal device may report all or part of the quantized first wideband amplitude coefficient set to the base station, and report all or part of the quantized second wideband amplitude coefficient set to the base station; or reporting all or part of the broadband amplitude coefficients except the maximum first broadband amplitude coefficient in the quantized first broadband amplitude coefficient set to the base station, and reporting all or part of the broadband amplitude coefficients except the maximum second broadband amplitude coefficient in the quantized second broadband amplitude coefficient set to the base station.

It should be noted here that the terminal device may further quantize the phase coefficients in the phase coefficient set according to at least two different accuracies according to the quantized first wideband amplitude coefficient, the quantized second wideband amplitude coefficient, and the quantized differential amplitude coefficient. Specifically, the differential amplitude coefficients in the quantized differential amplitude coefficient set are multiplied by the first wideband amplitude coefficients in the quantized first wideband amplitude coefficient set and the second wideband amplitude coefficients in the quantized second wideband amplitude coefficient set to obtain a first amplitude coefficient set, and then the phase coefficients in the phase coefficient set are quantized according to the first amplitude coefficient set, where the quantization mode is the same as the quantization mode in the implementation mode one, and details are not repeated here. In this implementation, the terminal device reports, to the network device, the index of the largest first wideband amplitude coefficient in the sorted first wideband amplitude coefficient set, the index of the largest second wideband amplitude in the sorted second wideband amplitude coefficient set, the quantized values of the phase coefficient corresponding to the difference amplitude coefficient at the intersection of the largest first wideband amplitude index and the largest second wideband amplitude index and the other phase coefficients except the phase coefficient corresponding to the third amplitude coefficient, where the third amplitude coefficient is an amplitude coefficient smaller than a preset value in the product of the first wideband amplitude coefficient in the sorted first wideband amplitude coefficient set, the second wideband amplitude coefficient in the sorted second wideband amplitude coefficient set, and the difference amplitude coefficient in the quantized difference amplitude coefficient set.

The device provided by the embodiment of the application is described in the following with the accompanying drawings of the specification.

Referring to fig. 3, based on the same inventive concept, an embodiment of the present application provides a terminal device, which in one embodiment includes a processor 301, a transmitter 302, and a memory 303, where the transmitter 302 and the memory 303 are coupled to the processor 301. The processor 301 may be a Central Processing Unit (CPU), an application-specific integrated circuit (ASIC), one or more integrated circuits for controlling program execution, a baseband chip, or the like. The number of memories may be one or more, and the memories may be read-only memories (ROMs), Random Access Memories (RAMs), or disk memories, etc.

By programming the processor 301, the code corresponding to the aforementioned information transmission method may be solidified into the chip, so that the chip can execute the following steps when running:

the phase coefficient set comprises a codebook, a phase coefficient set and a phase coefficient set, wherein the codebook is used for quantizing the phase coefficients in the phase coefficient set according to at least two different precisions according to the amplitude coefficient in the amplitude coefficient set of the codebook, one phase coefficient is quantized according to one precision to obtain the quantized phase coefficient set, the amplitude coefficient is used for representing the amplitude of an element in the codebook, and the phase coefficient is used for representing the phase of the element in the codebook;

a transmitter 302, configured to report information related to the quantized phase coefficient set to a network device.

Optionally, when the processor 301 quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, the method is specifically configured to:

Optionally, the terminal device further includes:

a transceiver 302, configured to receive indication information sent by the network device, where the indication information is used to indicate a feedback mode in which a terminal device sends feedback information to the network device, and the feedback mode includes a first feedback mode and a second feedback mode, where a highest precision of a quantization manner corresponding to the first feedback mode is higher than a highest precision of a quantization manner corresponding to the second feedback mode;

when the processor 301 quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, the method is specifically configured to:

Optionally, the processor 301 is further configured to:

the transmitter 302 is further configured to: and reporting information related to the quantized wideband amplitude coefficient set and information related to the quantized differential amplitude coefficient set to the network equipment.

Optionally, when the processor 301 quantizes the phase coefficients in the phase coefficient set according to at least two different accuracies according to the quantized wideband amplitude coefficient set to obtain the quantized phase coefficient set, the method is specifically configured to:

Alternatively to this, the first and second parts may,

when the processor 301 quantizes the phase coefficients in the phase coefficient set according to at least two kinds of precisions according to the quantized first wideband amplitude coefficient set, the quantized second wideband amplitude coefficient set, and/or the quantized differential phase coefficient set to obtain the quantized phase coefficient set, the method is specifically configured to:

Optionally, the processor 301 is further configured to:

Optionally, when the transmitter 302 reports the information related to the quantized phase coefficient to a network device, the method is specifically configured to:

Referring to fig. 4, the present application provides a network device, including:

a transmitter 401, configured to send configuration information to a terminal device, where the configuration information is parameter information configured by a network device for the terminal device and used to quantize phase coefficients in a phase coefficient set of a codebook;

a receiver 402, configured to receive information related to a quantized phase coefficient set sent by the terminal device, where the quantized phase coefficient set is obtained by quantizing, by the terminal device, phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the configuration information and an amplitude coefficient set of the codebook, where one phase coefficient in the phase coefficient set of the codebook is quantized according to one precision, the amplitude coefficient is used to represent an amplitude of an element of the codebook, and the phase coefficient is used to represent a phase of the element of the codebook.

Referring to fig. 5, the present application provides a terminal device, including:

a quantization unit 501, configured to quantize, according to an amplitude coefficient in an amplitude coefficient set of a codebook, phase coefficients in a phase coefficient set of the codebook according to at least two different precisions, where one phase coefficient is quantized according to one precision to obtain a quantized phase coefficient set, where the amplitude coefficient is used to represent amplitudes of elements in the codebook, and the phase coefficient is used to represent phases of the elements in the codebook;

a reporting unit 502, configured to report information related to the quantized phase coefficient set to a network device.

Optionally, when the quantizing unit 501 quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, the method is specifically configured to:

Optionally, the terminal device further includes a receiving unit 503, configured to receive indication information sent by the network device, where the indication information is used to indicate a feedback mode in which the terminal device sends feedback information to the network device, and the feedback mode includes a first feedback mode and a second feedback mode, where a highest precision of a quantization manner corresponding to the first feedback mode is higher than a highest precision of a quantization manner corresponding to the second feedback mode;

when the quantization unit 501 quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, the method is specifically configured to:

Optionally, the quantization unit 501 is further configured to:

the reporting unit 502 is further configured to:

Optionally, when the quantization unit 501 quantizes the phase coefficients in the phase coefficient set according to at least two different accuracies according to the quantized wideband amplitude coefficient set to obtain the quantized phase coefficient set, the method is specifically configured to:

Alternatively to this, the first and second parts may,

when the quantization unit 501 quantizes the phase coefficients in the phase coefficient set according to at least two accuracies according to the quantized first wideband amplitude coefficient set, the quantized second wideband amplitude coefficient set, and/or the quantized differential phase coefficient set to obtain the quantized phase coefficient set, the method is specifically configured to:

Optionally, the terminal device further includes:

Optionally, when the reporting unit 502 reports the information related to the quantized phase coefficient to a network device, the reporting unit is specifically configured to:

Referring to fig. 6, the present application provides a network device, including:

a sending unit 601, configured to send configuration information to a terminal device, where the configuration information is parameter information configured by the network device for the terminal device and used for quantizing phase coefficients in a phase coefficient set of a codebook;

a receiving unit 602, configured to receive information related to a quantized phase coefficient set sent by the terminal device, where the quantized phase coefficient set is obtained by quantizing, by the terminal device, phase coefficients in the phase coefficient set of the codebook according to at least two different accuracies according to the configuration information and an amplitude coefficient set of the codebook, where one phase coefficient in the phase coefficient set of the codebook is quantized according to one accuracy, the amplitude coefficient is used to represent an amplitude of an element of the codebook, and the phase coefficient is used to represent a phase of the element of the codebook.

The present application further provides a computer storage medium, which may include a memory, where the memory may store a program, and the program includes all the steps executed by the terminal device and the network device described in the method embodiment shown in fig. 2 when executed.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above embodiments are only used to describe the technical solutions of the present application in detail, but the above embodiments are only used to help understanding the method of the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention. Variations or substitutions that may be readily apparent to one skilled in the art are intended to be included within the scope of the embodiments of the present invention.

Claims

1. An information transmission method, comprising:

quantizing phase coefficients in a phase coefficient set of a codebook according to at least two different precisions according to amplitude coefficients in an amplitude coefficient set of the codebook, wherein one phase coefficient is quantized according to one precision to obtain a quantized phase coefficient set, wherein the amplitude coefficient is used for representing the amplitude of an element in the codebook, and the phase coefficient is used for representing the phase of the element in the codebook;

and reporting information related to the quantized phase coefficient set to network equipment.

2. The method of claim 1, wherein quantizing the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, comprises:

3. The method of claim 1, wherein quantizing the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, comprises:

4. The method of claim 1, wherein quantizing the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain a quantized phase coefficient set, comprises:

5. The method of claim 4, further comprising:

6. The method of claim 4, wherein quantizing phase coefficients in the set of phase coefficients to at least two different accuracies based on a set of quantized wideband amplitude coefficients to obtain a set of quantized phase coefficients, comprises:

7. The method according to claim 4 or 6,

8. The method of claim 4, wherein the number of first wideband amplitude coefficients in the first set of wideband amplitude coefficients is 2L and the number of second wideband amplitude coefficients in the second set of wideband amplitude coefficients is M;

9. The method of claim 8, further comprising:

10. The method of claim 9, wherein reporting information related to the quantized phase coefficients to a network device comprises:

11. An information transmission method, comprising:

sending configuration information to a terminal device, wherein the configuration information is parameter information which is configured for the terminal device by a network device and is used for quantizing phase coefficients in a phase coefficient set of a codebook;

12. The method according to claim 11, wherein the configuration information includes a feedback mode in which the terminal device sends feedback information to the network device, and the feedback mode includes a first feedback mode and a second feedback mode, and a highest precision of a quantization manner corresponding to the first feedback mode is higher than a highest precision of a quantization manner corresponding to the second feedback mode.

13. A terminal device, comprising:

a processor, configured to quantize phase coefficients in a phase coefficient set of a codebook according to at least two different precisions according to amplitude coefficients in the amplitude coefficient set of the codebook, where one phase coefficient is quantized according to one precision to obtain a quantized phase coefficient set, where an amplitude coefficient is used to represent amplitudes of elements in the codebook, and a phase coefficient is used to represent phases of elements in the codebook;

14. The terminal device of claim 13, wherein when the processor quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain the quantized phase coefficient set, the processor is specifically configured to:

15. The terminal device according to claim 13, wherein the terminal device further comprises:

16. The terminal device of claim 13, wherein when the processor quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook to obtain the quantized phase coefficient set, the processor is specifically configured to:

17. The terminal device of claim 16, wherein the processor is further configured to:

18. The terminal device of claim 16, wherein when the processor quantizes the phase coefficients in the phase coefficient set according to at least two different accuracies according to the quantized wideband amplitude coefficient set to obtain the quantized phase coefficient set, the processor is specifically configured to:

19. The terminal device according to claim 16 or 18,

20. The terminal device of claim 16, wherein the number of first wideband amplitude coefficients in the first set of wideband amplitude coefficients is 2L, and wherein the number of second wideband amplitude coefficients in the second set of wideband amplitude coefficients is M;

quantizing phase coefficients corresponding to first Q second wideband amplitude coefficients in the ordered second wideband amplitude coefficient set in P groups of phase coefficients corresponding to first P first wideband amplitude coefficients in the ordered first wideband amplitude coefficient set by adopting a first quantization mode, setting phase coefficients corresponding to M-Q second wideband amplitude coefficients in last M-Q second wideband amplitude coefficients in the ordered second wideband amplitude coefficient set in 2L-P groups of phase coefficients corresponding to 2L-P first wideband amplitude coefficients in the ordered first wideband amplitude coefficient set to be 0, and quantizing other phase coefficients in the phase coefficient set by adopting a second quantization mode to obtain a quantized phase coefficient set;

21. The terminal device of claim 20, wherein the processor is further configured to:

22. The terminal device of claim 21, wherein when the transmitter reports the information related to the quantized phase coefficient to a network device, the terminal device is specifically configured to:

Reporting the index of the largest first broadband amplitude coefficient in the ordered first broadband amplitude coefficient set, the index of the largest second broadband amplitude in the ordered second broadband amplitude coefficient set, the phase coefficient corresponding to the difference amplitude coefficient at the intersection of the index of the largest first broadband amplitude and the index of the largest second broadband amplitude, and quantized values of other phase coefficients except the phase coefficient corresponding to a third amplitude coefficient to network equipment, wherein the third amplitude coefficient is an amplitude coefficient smaller than a preset value in the product of the first broadband amplitude coefficient in the ordered first broadband amplitude coefficient set, the second broadband amplitude coefficient set in the ordered second broadband amplitude coefficient set and the difference amplitude coefficient in the quantized difference amplitude coefficient set.

23. A network device, comprising:

a transmitter, configured to send configuration information to a terminal device, where the configuration information is parameter information configured by a network device for the terminal device and used to quantize phase coefficients in a phase coefficient set of a codebook;

a receiver, configured to receive information related to a quantized phase coefficient set sent by the terminal device, where the quantized phase coefficient set is obtained by quantizing, by the terminal device, phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the configuration information and an amplitude coefficient set of the codebook, where one phase coefficient in the phase coefficient set of the codebook is quantized according to one precision, the amplitude coefficient is used to represent an amplitude of an element of the codebook, and the phase coefficient is used to represent a phase of the element of the codebook.

24. The network device according to claim 23, wherein the configuration information includes a feedback mode in which the terminal device sends feedback information to the network device, and the feedback mode includes a first feedback mode and a second feedback mode, and a highest precision of a quantization manner corresponding to the first feedback mode is higher than a highest precision of a quantization manner corresponding to the second feedback mode.

25. A terminal device, comprising:

the quantization unit is used for quantizing the phase coefficients in the phase coefficient set of the codebook according to at least two different precisions according to the amplitude coefficients in the amplitude coefficient set of the codebook, wherein one phase coefficient is quantized according to one precision to obtain a quantized phase coefficient set, the amplitude coefficients are used for representing the amplitudes of the elements in the codebook, and the phase coefficients are used for representing the phases of the elements in the codebook;

and the reporting unit is used for reporting the information related to the quantized phase coefficient set to network equipment.

26. A network device, comprising:

27. A computer storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1-10 or 11-12.

28. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of claims 1-10 or 11-12.