CN111436080B

CN111436080B - Information sending method, terminal equipment and network equipment

Info

Publication number: CN111436080B
Application number: CN201910028410.XA
Authority: CN
Inventors: 李辉; 高秋彬; 刘正宣; 陈润华
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2023-05-05
Anticipated expiration: 2039-01-11
Also published as: CN111436080A

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 method for transmitting the information comprises the following steps: quantizing phase coefficients in a phase coefficient set of a codebook according to at least two different accuracies according to amplitude coefficients in the amplitude coefficient set of the codebook, wherein one phase coefficient is quantized according to one accuracy 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 the NR (New Radio) system. The Type II codebook defined in Rel-15 (Release 15 ) is based on linear combination of orthogonal beams, with higher channel quantization accuracy, while the overhead of feeding back the coefficients of all subbands is huge when the number of subbands is large, since the feedback of each subband includes both subband phase coefficients and subband amplitude coefficients.

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

Disclosure of Invention

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

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

In the embodiment of the application, the terminal equipment 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 is avoided, redundancy is easy to cause, and the feedback overhead of the terminal equipment can be reduced.

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

arranging the quantized amplitude coefficients in order from large to small to obtain an ordered amplitude coefficient set;

dividing the amplitude coefficients in the ordered amplitude coefficient set into T groups of amplitude coefficients according to the 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 sequentially reduced 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 of the T sets of amplitude coefficients may be preset by the system, may be indicated by the base station, or may be randomly divided by the terminal device, and is not limited herein.

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

receiving indication information sent by the network equipment, wherein the indication information is used for indicating a feedback mode of sending feedback information to the network equipment 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 the highest precision of a quantization mode corresponding to the second feedback mode;

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

In the specific implementation process, when the channel quality is poor, the network device can instruct the terminal device to adopt the first feedback mode to feed back information, namely, quantize the phase coefficients in the phase coefficient set according to high precision, and when the channel quality is good, the network device can instruct the terminal device to adopt the second feedback mode to feed back information, namely, 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 information sent by the terminal equipment received by the network equipment is ensured.

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

quantizing 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; wherein one wideband amplitude coefficient in the wideband amplitude coefficient set corresponds to one beam for linear combination in the codebook or corresponds to one base vector for frequency domain compression in the codebook; or (b)

Quantizing phase coefficients in a phase coefficient set of a codebook according to at least two different accuracies according to amplitude coefficients in the amplitude coefficient set of the codebook 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 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 so as 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 the codebook or corresponds to one base vector for frequency domain compression in the codebook; or (b)

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 wideband phase coefficients in the wideband phase coefficient set and differential phase coefficients in the differential phase coefficient set according to at least two different accuracies according to the quantized wideband amplitude coefficient set to obtain a quantized wideband phase coefficient set and a quantized differential phase coefficient set; or (b)

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 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 kinds of precision 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 positions and the numbers of the quantized phase coefficient set and the phase coefficients with zero values.

Optionally, the method further comprises:

Quantizing the differential amplitude coefficients in the differential amplitude coefficient set according to at least two different accuracies according to the quantized broadband amplitude coefficient set, wherein one differential amplitude coefficient is quantized according to one accuracy so as 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, so as to obtain a quantized phase coefficient set, including:

arranging the quantized wideband amplitude coefficients in order from large to small to obtain an ordered wideband amplitude coefficient set;

dividing wideband amplitude coefficients in the ordered wideband amplitude coefficient set into S groups of wideband amplitude coefficients according to an arrangement sequence, and quantizing 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;

wherein, S kinds of precision are sequentially reduced according to the order of indexes of S, and S is an integer greater than or equal to 2.

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

Alternatively to this, the method may comprise,

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 wave beam or the maximum value in the amplitude coefficient group corresponding to one base vector; or (b)

The value of one wideband amplitude coefficient in the wideband amplitude coefficient set is the average value of the amplitude coefficient values in the amplitude coefficient group corresponding to one wave beam or the average value of the amplitude coefficient values in the amplitude coefficient group corresponding to one base vector; or (b)

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 the first wideband amplitude coefficients in the first wideband amplitude coefficient set is 2L, and the number of the 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 kinds of precision 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, wherein the method comprises the following steps:

Arranging the quantized first wideband amplitude coefficients in order from large to small to obtain a sequenced first wideband amplitude coefficient set, and arranging the quantized second wideband amplitude coefficients in order from large to small to obtain a sequenced second wideband amplitude coefficient set;

the phase coefficients corresponding to the first Q second wideband amplitude coefficients in the first wideband amplitude coefficient set are quantized in a first quantization mode, the phase coefficients corresponding to the last M-Q second wideband amplitude coefficients in the second wideband amplitude coefficient set are set to be 0, and the other phase coefficients in the phase coefficient set are quantized in 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 the precision of the second quantization mode; or (b)

multiplying the differential amplitude coefficient in the quantized differential amplitude coefficient set with the first wideband amplitude coefficient in the quantized first wideband amplitude coefficient set and the second wideband amplitude coefficient in the quantized second wideband amplitude coefficient set to obtain a first amplitude coefficient set;

and quantizing the phase coefficients in the phase coefficient set according to at least two accuracies according to the amplitude coefficients in the first amplitude coefficient set so as to obtain quantized phase coefficients.

Optionally, the method further comprises:

normalizing a maximum amplitude coefficient in the amplitude coefficient set to 1, normalizing a phase coefficient corresponding to the maximum amplitude coefficient to zero, or normalizing a wideband amplitude coefficient corresponding to the maximum amplitude coefficient, or a first wideband amplitude coefficient, or a second wideband amplitude coefficient to 1, and or normalizing a wideband phase coefficient corresponding to the maximum amplitude coefficient to 0; or normalizing the differential amplitude coefficient with the maximum product value of the differential 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 differential amplitude coefficient to 0; or (b)

Normalizing a maximum band amplitude coefficient in the wideband amplitude coefficient set to 1, normalizing a maximum differential amplitude coefficient in a differential amplitude coefficient set corresponding to the maximum band amplitude coefficient to 1, and normalizing a maximum phase coefficient corresponding to the maximum differential amplitude coefficient to zero; or (b)

Normalizing a maximum band amplitude coefficient in the set of wideband amplitude coefficients to 1, normalizing a maximum differential amplitude coefficient in the set of differential amplitude coefficients to 1, and normalizing a maximum phase coefficient corresponding to the maximum differential amplitude coefficient to zero; or (b)

Normalizing a maximum first wideband amplitude coefficient in the first wideband amplitude coefficient set to 1, a maximum second wideband amplitude coefficient in the second wideband amplitude coefficient set to 1, and normalizing a differential amplitude coefficient at an intersection of a row where the maximum first wideband amplitude coefficient is located and a column where the maximum second wideband amplitude coefficient is located to 1, and normalizing a phase coefficient at an intersection of the row where the maximum first wideband amplitude coefficient is located and the column where the maximum second wideband amplitude coefficient is located to zero; or (b)

Normalizing a first wideband amplitude coefficient of a row where the maximum amplitude coefficient is located in the amplitude coefficient set 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 a position where the maximum amplitude coefficient is located to be zero.

In the embodiment of the present application, before quantizing the amplitude coefficient in the amplitude coefficient set, the wideband amplitude coefficient in the wideband amplitude coefficient set, the differential amplitude coefficient in the differential amplitude coefficient set, the first wideband amplitude coefficient in the first wideband amplitude coefficient, and the second wideband amplitude coefficient in the second wideband amplitude coefficient, the coefficients in the sets may be further normalized, so as to reduce quantization complexity when the terminal device performs quantization.

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 phase coefficients except the quantized values of the phase coefficients corresponding to the index of the maximum amplitude coefficient to network equipment; or (b)

Reporting the index of the maximum wideband amplitude coefficient in the ordered wideband amplitude coefficient set and the quantized value of the phase coefficient group corresponding to the wideband amplitude coefficient greater than zero in the ordered wideband amplitude coefficient set to network equipment except for the phase coefficient corresponding to the maximum differential amplitude coefficient; or (b)

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

And reporting quantized values of phase coefficients corresponding to the differential amplitude coefficients except for the index intersection point of the maximum first wideband amplitude coefficient and the index of the maximum second wideband amplitude in the ordered first wideband amplitude coefficient set and other phase coefficients except for 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 products of the differential amplitude coefficients in the differential amplitude coefficient set of the ordered second wideband amplitude coefficient set and the quantized differential amplitude coefficient set in the ordered second wideband amplitude coefficient set.

In this embodiment of the present application, the system may preset the maximum amplitude coefficient in the amplitude coefficient set to be 1 and the phase coefficient corresponding to the maximum amplitude coefficient to be zero, so, in order to reduce feedback overhead of the terminal device, the terminal device may report the index of the maximum amplitude coefficient and the index of the phase coefficient corresponding to the maximum amplitude coefficient without reporting the quantized value of the maximum amplitude coefficient and the quantized value of the phase coefficient corresponding to the maximum amplitude coefficient.

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

and receiving information related to quantized phase coefficient sets sent by the terminal equipment, wherein the quantized phase coefficient sets are obtained by quantizing phase coefficients in the phase coefficient sets of the codebook according to at least two different accuracies by the terminal equipment according to the configuration information and the amplitude coefficient sets of the codebook, one phase coefficient in the phase coefficient sets of the codebook is quantized according to one accuracy, 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 the highest precision of a quantization mode corresponding to the first feedback mode is higher than the 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 set of phase coefficients of a codebook according to at least two different accuracies according to an amplitude coefficient in the set of amplitude coefficients of the codebook, where one phase coefficient is quantized according to one accuracy to obtain a quantized set of phase coefficients, 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 transmitter is used for reporting the information related to the quantized phase coefficient set to the network equipment.

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

Optionally, the terminal device further includes:

the transceiver is used for receiving the indication information sent by the network equipment, wherein the indication information is used for indicating a feedback mode of sending feedback information to the network equipment 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;

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

Alternatively to this, the method may comprise,

the method comprises the steps that when the processor quantizes the phase coefficients in the phase coefficient set according to at least two kinds of precision according to the quantized first wideband amplitude coefficient set, the quantized second wideband amplitude coefficient set and/or the quantized differential phase coefficient set so as to obtain the quantized phase coefficient set, the method is specifically used for:

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 used for:

And reporting quantized values of phase coefficients corresponding to the differential amplitude coefficients except for the intersection point of the index of the maximum first wideband amplitude and the index of the maximum second wideband amplitude in the ordered first wideband amplitude coefficient set and other phase coefficients except for the phase coefficient corresponding to a third amplitude coefficient, wherein the third amplitude coefficient is an amplitude coefficient smaller than a preset value in products of differential amplitude coefficients in the quantized differential amplitude coefficient set in the ordered first wideband amplitude coefficient set.

In a fourth aspect, the present application provides a network device, a transmitter, 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 a phase coefficient in a phase coefficient set of a codebook; and the receiver is used for receiving information related to the quantized phase coefficient set sent by the terminal equipment, wherein the quantized phase coefficient set is obtained by quantizing phase coefficients in the phase coefficient set of the codebook according to the configuration information and the amplitude coefficient set of the codebook by the terminal equipment, 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.

In a fifth aspect, the present application provides a terminal device, a quantization unit, configured to quantize, according to an amplitude coefficient in a set of amplitude coefficients of a codebook, phase coefficients in a set of phase coefficients of the codebook according to at least two different accuracies, where one phase coefficient is quantized according to one accuracy to obtain a quantized set of phase coefficients, 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 the 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 a phase coefficient in a phase coefficient set of a codebook;

The receiving unit is 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 the configuration information and an amplitude coefficient set of the codebook according to at least two different accuracies, 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 quantization unit quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different accuracies 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 terminal device further includes a receiving unit, configured to receive the 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, 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;

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

Alternatively to this, the method may comprise,

The quantization unit is specifically configured to, when quantizing the phase coefficients in the phase coefficient set according to at least two kinds of precision according to the quantized first wideband amplitude coefficient set, the quantized second wideband amplitude coefficient set and/or the quantized differential phase coefficient set, obtain a quantized phase coefficient set:

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, or normalize a wideband amplitude coefficient corresponding to the maximum amplitude coefficient, or 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 differential amplitude coefficient with the maximum product value of the differential 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 differential amplitude coefficient to 0; or (b)

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

In a sixth aspect, the present application provides a network device, 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 a phase coefficient in a phase coefficient set of a codebook;

In a seventh aspect, embodiments of the present application provide a computer storage medium storing computer software instructions for performing the functions of any one of the designs of the first aspect, the second aspect, and the second aspect, or a program related to the method for performing any one of the designs of the first aspect, the second aspect, and the second aspect.

In an eighth aspect, embodiments of the present application provide a computer program product, which when executed by a computer, may cause the computer to perform the method of any one of the designs of the first aspect, the second aspect, and the method of any one of the designs of the second aspect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed 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 other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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 provided in 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 more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the following, some terms in the embodiments of the present invention are explained for easy understanding by those skilled in the art.

(1) A network device, including for example a base station (e.g., an access point), may refer to a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices. The base station may be configured to inter-convert the received air frames with IP packets as a router between the user equipment and the rest of the access network, which may include an IP network. The base station may also coordinate attribute management for the air interface. For example, the base station may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (Long Term Evolution, LTE) system or an evolved LTE system (LTE-Advanced, LTE-a), or may also include a next generation NodeB (next generation node B, NG-NB) in a fifth generation mobile communication technology (5G) system, and embodiments of the present invention are not limited.

(2) Terminal devices, including devices that provide voice and/or data connectivity to a user, may include, for example, a handheld device having wireless connectivity, or a processing device connected to a wireless modem. The terminal device may communicate with the core network via a radio access network (Radio Access Network, RAN), exchanging voice and/or data with the RAN. The Terminal Device 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 Mobile Station (Mobile), a Remote Station (Remote Station), an 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 a User Equipment (User Device), etc. For example, mobile telephones (or "cellular" telephones) computers with mobile terminal devices, portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices, smart wearable devices, and the like may be included. For example, personal communication services (Personal Communication Service, PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDA), smart watches, smart helmets, smart glasses, smart bracelets, and the like. But also limited devices such as devices with lower power consumption, or devices with limited memory capabilities, or devices with limited computing capabilities, etc. Examples include bar codes, radio Frequency Identification (RFID), sensors, global Positioning System (GPS), laser scanners, and like information sensing devices.

(3) In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, unless otherwise specified, the term "/" generally indicates that the associated object is an "or" relationship. And in the description of embodiments of the invention, the words "first," "second," and the like are used solely for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance, or alternatively for indicating or implying a sequential order.

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

The NR system Rel-15 defines a TypeII codebook, which is a linear combination based on beams in the orthogonal beam group, indicating the rank1 and rank2 codebooks. For one subband, the rank1 codebook is denoted as:

the Rank2 codebook is expressed as:

wherein, the liquid crystal display device comprises a liquid crystal display device,

l represents the orthogonal beams within the group, +.>

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

Representing the broad bandwidth acting on beam i, polarization direction r and layer l in a beam set A degree coefficient; />

Representing subband amplitude coefficients acting on beam i, polarization direction r and layer l in the beam set; c _r,l,i Indicating the subband phase coefficients acting on beam i, polarization direction r and layer l in the beam set. Since the feedback of each subband includes both the subband phase coefficients and the subband amplitude coefficients, when the number of subbands is large, the terminal device needs a large feedback overhead to feedback the coefficients of all subbands.

The low-overhead TypeII codebook is defined in Rel-16 of the NR system, and is to compress the coefficient of each sub-band and feed back the compressed coefficient to the base station. Taking rank1 as an example, for all subbands, the TypeII codebook may be expressed as:

wherein W is ₁ The orthogonal combined beams contained in (a) are the same as the typeII codebook defined in Rel-15;

representing the compressed coefficients, p _i,j Representing the amplitude coefficient, c _i,j Representing the phase coefficient; w (W) _f The compressed base vectors are represented, wherein M base vectors are contained, each vector has a length of N, and the number of N is determined by the number of sub-bands. />

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

In view of this, the 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 precision according to amplitude coefficients in the amplitude coefficient set of the codebook, so as to avoid redundancy caused by quantization of phase coefficients in all phase coefficient sets according to the same quantization mode, thereby reducing feedback overhead of the terminal device.

Fig. 1 is an application scenario of the embodiment of the present application. A base station and a terminal device located within the coverage area of the base station are included in fig. 1. 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.

The technical solutions provided by the embodiments of the present application are described below with reference to the accompanying drawings, and in the following description, the application of the technical solutions provided by the present application in the application scenario shown in fig. 1 is taken as an example, and the network device is taken as an example of a base station.

Referring to fig. 2, an embodiment of the present application provides an information sending method, and 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 configured by the network equipment for the terminal equipment and used for quantizing phase coefficients in a phase coefficient set of a codebook.

Here, it should be noted that this step is not a step necessary in the embodiments of the present application. The step S201 will be specifically explained in conjunction with the specific implementation manner of the step S202, which will not be described herein.

S202: the terminal equipment quantizes phase coefficients in a phase coefficient set of a codebook according to at least two different accuracies according to the amplitude coefficients in the amplitude coefficient set of the codebook, wherein one phase coefficient is quantized according to one accuracy 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.

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

{p _0,0 p _0,1 … p _0,M-1 p _1,0 p _1,1 … p _1,M-1 … p _2L-1,0 p _2L-1,1 … p _2L-1,M-1 the set of phase coefficients of the codebook may be represented as { c } ₀ , ₀ c _0,1 … c _0,M-1 c _1,0 c _1,1 … c _1,M-1 … c _2L-1,0 c _2L-1,1 … c _2L-1,M-1 }。

The precision refers to quantization precision, for example, 3 bits in a quantization method using 8PSK (Phase Shift Keying ), and 2 bits in a quantization method using QPSK (Quadrature Phase Shift Keying ). 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 quantization of all the phase coefficients in the phase coefficient set according to the same accuracy is avoided, and the feedback overhead of the terminal equipment can be reduced.

Before the terminal device quantizes the phase coefficients in the phase coefficient set, the terminal device needs to quantize the amplitude coefficients in the amplitude coefficient set, specifically, the terminal device may quantize the amplitude coefficients in the amplitude coefficient set in a quantization mode with the same precision, so as to obtain a quantized amplitude coefficient set, for example, in a 3-bit quantization mode, in a 2-bit quantization mode, or in other quantization modes, where the quantization mode may be defined by a system or indicated by a 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, and specific implementation manners thereof include, but are not limited to, the following, and the following are respectively described below.

Implementation one

The terminal equipment arranges the quantized amplitude coefficients in order from big to small to obtain an ordered amplitude coefficient set; the terminal equipment divides the amplitude coefficients in the ordered amplitude coefficient sets into T groups of amplitude coefficients according to the arrangement sequence, and quantizes T groups of phase coefficients corresponding to the T groups of amplitude coefficients according to T kinds of precision to obtain quantized phase coefficient sets;

It should be noted that, in the first implementation manner, for example, the quantized amplitude coefficients may be arranged in order from small to large by the terminal device, so as to obtain an ordered amplitude coefficient set, the terminal device divides the amplitude coefficients in the ordered amplitude coefficient set into T sets of amplitude coefficients according to the arrangement order, and quantizes the T sets of phase coefficients corresponding to the T sets of amplitude coefficients according to T kinds of precision, so as to obtain a quantized phase coefficient set; the precision of T kinds of precision is sequentially increased according to the index sequence of T, and T is an integer greater than or equal to 2.

Wherein, T may be preset by the system, configured by the base station, or determined by the terminal device itself. Here, when T is configured by the base station, T is the base station transmitting the configuration information in step S201 to the terminal device. Of course, in the embodiment of the present application, the number of amplitude coefficients in each set of amplitude coefficients in the T sets of amplitude coefficients may also be preset, for example, may be preset by the system, may be configured by the 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 of the T sets of amplitude coefficients may be the same or may be different, and is not limited herein.

In a specific implementation process, taking t=2, where the number of amplitude coefficients in a set of amplitude coefficients is 3, the terminal device arranges the quantized amplitude coefficients in order from large to small as an example, and the terminal device divides phase coefficients corresponding to the first 3 quantized amplitude coefficients into a set, denoted as a set 1, and divides phase coefficients corresponding to the rest quantized amplitude coefficients in the ordered amplitude coefficient set into a set, denoted as a set 2. For example, the first 3 quantized amplitude coefficients in the ordered set of amplitude coefficients are p _1,0 、p _1,M-1 And p _2L-1,1 The corresponding phase coefficient c _1,0 、c _1,M-1 And c _2L-1,1 Dividing into a group and quantizing the group of phase coefficients to a precision, the other phase coefficients in the groupThe phase coefficients are divided into a set and the set of phase coefficients is quantized to another precision. As an example, the phase coefficients in group 1 are quantized according to 3bit precision, i.e. 8PSK, the phase coefficients in group 2 are quantized according to 2bit, i.e. QPSK, and as another example, the phase coefficients in group 1 are quantized according to 4bit precision, i.e. 16PSK, the phase coefficients in group 2 are quantized according to 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 quantized values of the phase coefficients except the quantized values of the phase coefficients corresponding to the index of the maximum amplitude coefficient to the base station.

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

Likewise, 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 quantized amplitude coefficients except the maximum amplitude coefficient in the amplitude coefficient set to the base station.

Implementation II

The base station sends indication information to the terminal equipment, wherein the indication information is used for indicating the terminal equipment to send feedback modes of feedback information to the base station, the feedback modes comprise 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 coefficients 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 coefficients in the amplitude coefficient set so as to obtain quantized phase coefficients.

Here, the indication information sent by the base station to the terminal device refers to information included in the configuration information sent by the base station to the terminal device in step S201.

In the specific implementation process, the quality of the feedback information sent by the base station receiving terminal equipment is affected by the channel quality, so that in order to ensure the quality of the feedback information sent by the base station receiving terminal equipment, the base station can determine the feedback mode of the feedback information sent by the terminal equipment to the base station. For example, when the channel quality is poor, the base station may instruct the terminal device to transmit 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 feedback information to the base station in the second feedback mode. Wherein, the highest precision of the quantization mode corresponding to the first feedback mode is higher than the highest precision of the quantization mode corresponding to the second feedback mode. For example, the quantization mode corresponding to the first feedback mode is 16PSK or QPSK, the quantization mode corresponding to the second feedback mode is 8PSK or QPSK, the highest precision of the quantization mode corresponding to the first feedback mode is 4 bits, and the highest precision is 3 bits higher than the highest precision of the quantization mode corresponding to the second feedback mode. Therefore, by the implementation manner in 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 equipment 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 instruct the terminal device to send information to the base station by adopting the first feedback mode, the terminal device groups the phase coefficients in the phase coefficient set according to the quantized amplitude coefficient set, and then the grouping mode is the same as the first implementation mode. Continuing with the example of implementation one, after the terminal device classifies the phase coefficients in the set of phase coefficients into group 1 and group 2, the phase coefficients in group 1 are quantized in a quantization mode corresponding to the first feedback mode, e.g., 16PSK, and the phase coefficients in group 2 are quantized in a quantization mode corresponding to the second feedback mode, e.g., QPSK.

If the indication information sent by the base station is used for indicating the terminal equipment to send information to the base station by adopting the second feedback mode, after the terminal equipment groups the phase coefficients in the phase coefficient set according to the quantized amplitude coefficient set, the grouping mode is the same as the first implementation mode, and the detailed description is omitted. Continuing with the example of implementation one, after the terminal device classifies the phase coefficients in the set of phase coefficients into group 1 and group 2, the phase coefficients in group 1 are quantized in a quantization mode corresponding to the first feedback mode, e.g., 8PSK, and the phase coefficients in group 2 are quantized in a quantization mode corresponding to the second feedback mode, e.g., QPSK.

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

Implementation III

The terminal equipment determines a wideband amplitude coefficient set of the codebook according to the amplitude coefficient set and the phase coefficient set; quantizing 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; wherein one wideband amplitude coefficient in the wideband amplitude coefficient set corresponds to one beam for linear combination in the codebook or corresponds to one basis vector for frequency domain compression in the codebook.

In the third implementation manner, since one wideband amplitude coefficient in the wideband amplitude coefficient set may correspond to one beam for linear combination in the codebook, and may also correspond to one base vector for frequency domain compression in the codebook, the following description will be given respectively.

1. One wideband amplitude coefficient corresponds to one beam

In this implementation, the coefficients are

Expressed as: />

Wherein the matrix

Is a set of diagonal elements->

For the wideband amplitude coefficient set of the codebook, one beam i (i=0, 1, …, 2L-1) corresponds to one wideband amplitude coefficient +.>

Corresponding to a group of differential amplitude coefficients->

And a set of phase coefficients { c _i,0 c _i,1 … c _i,M-1 }。

Here, the wideband amplitude coefficient

The calculation modes of (a) include, but are not limited to, the following, and the following are respectively described.

Mode one

The value of one wideband amplitude coefficient in the wideband amplitude coefficient set is the maximum value in the amplitude coefficient set corresponding to one beam. That is, the maximum value of the amplitude coefficient in the amplitude coefficient group corresponding to each beam is determined according to the following formula:

mode two

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

mode three

The value of one wideband amplitude coefficient in the set of wideband amplitude coefficients is a value determined from wideband channel characteristics. I.e. the projection of the wideband eigenvectors onto the beam obtained from the wideband channel correlation matrix.

Accordingly, the differential amplitude coefficient may be obtained by calculation of, for example,

in the embodiment of the present application, in order to further reduce feedback overhead of the terminal device, before the wideband amplitude coefficient set, the differential amplitude coefficient set and the phase coefficient set are quantized, 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 manner includes, but is not limited to, the following two ways, and the following description will be given respectively.

Normalization mode one

The maximum band amplitude coefficient in the wideband amplitude coefficient set is normalized to 1, the maximum differential amplitude coefficient in the differential amplitude coefficient set corresponding to the maximum band 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 band amplitude coefficient in the set of band amplitude coefficients is

The wideband amplitude coefficient in the wideband amplitude coefficient set can be expressed as follows:

the differential amplitude coefficient group corresponding to the maximum band amplitude coefficient is

If the maximum differential amplitude coefficient in the differential amplitude coefficient group is +.>

The phase coefficient corresponding to the maximum differential amplitude coefficient is c _1,1 The differential amplitude coefficient set and the phase coefficient set can be normalized and then expressed as:

normalization mode II

Normalizing the maximum band amplitude coefficient in the wideband amplitude coefficient set to 1, normalizing the maximum differential amplitude coefficient in the differential amplitude coefficient set to 1, and normalizing the phase coefficient corresponding to the maximum differential amplitude coefficient to zero.

The wideband amplitude coefficient set after normalization can be expressed as the above formula (8), and will not be described in detail here. The differential amplitude coefficient set can be normalized as follows, in particular, if the maximum differential coefficient is

The phase coefficient corresponding to the maximum difference coefficient is c _0,1 The differential amplitude coefficient set and the phase coefficient set can be normalized and then expressed as:

normalization mode III

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 _1,0 The wideband amplitude coefficient corresponding to the maximum amplitude coefficient is

The wideband amplitude coefficient set may be represented as equation (8) after normalization and will not be described in detail herein. In the normalization mode three, the normalization mode of the normalization mode one or the normalization mode of the normalization mode two may be adopted for the normalization of the differential amplitude coefficient set, and the normalization mode is not limited herein.

After determining the wideband amplitude coefficient set of the codebook, 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 the quantized wideband amplitude coefficient set, for example, using a 3-bit quantization mode or using a 2-bit quantization mode, or using other quantization modes, where the quantization modes may be defined by a system or indicated by a base station.

After the quantized wideband amplitude coefficient set is obtained, the terminal equipment arranges the quantized wideband amplitude coefficients in order from large to small to obtain the ordered wideband amplitude coefficient set; dividing wideband amplitude coefficients in the ordered wideband amplitude coefficient set into S groups of wideband amplitude coefficients according to the arrangement sequence, and quantizing 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.

It should be noted that, the method may also be implemented, for example, that the terminal device may also arrange quantized wideband amplitude coefficients in order from small to large to obtain an ordered wideband amplitude coefficient set, where the terminal device divides wideband amplitude coefficients in the ordered wideband amplitude coefficient set into S groups of amplitude coefficients according to the arrangement order, and quantizes S groups of phase coefficients corresponding to the S groups of wideband amplitude coefficients according to S kinds of precision, so as to obtain a quantized phase coefficient set; the S precision is sequentially increased according to the index sequence of S, and S is an integer greater than or equal to 2.

The S may be preset by the system, configured by the base station, or determined by the terminal device itself. Here, when S is configured by the base station, S is the base station transmitting the configuration information in step S201 to the terminal device. Of course, in the embodiment of the present application, the number of amplitude coefficients in each of the S sets of wideband amplitude coefficients may also be preset, for example, may be preset by the system, may be configured by the base station, or may be determined by the terminal device itself; the number of amplitude coefficients in each of the S sets of amplitude coefficients may also be random. The number of amplitude coefficients in each of the S sets of amplitude coefficients may be the same or may be different, and is not limited herein.

In a specific implementation process, taking s=2, wherein the number of wideband amplitude coefficients in a group of wideband amplitude coefficients is 2, the terminal device arranges quantized wideband amplitude coefficients in order from big to small as an example, the terminal device divides phase coefficients corresponding to the first 2 quantized wideband amplitude coefficients into a group, which is denoted as a group a, and divides phase coefficients corresponding to the rest quantized wideband amplitude coefficients in the ordered wideband amplitude coefficient set into a group, which is denoted as a group B. For example, the first 2 bits quantized wideband amplitude coefficients in the ordered wideband amplitude coefficient set are

And->

The corresponding phase coefficient { c }, will be _1,0 c _1,1 … c _1,M-1 Sum { c } _3,0 c _3,1 … c _3,M-1 Dividing the phase coefficient set into one group and quantizing the other phase coefficients in the phase coefficient set according to one precision, dividing the phase coefficient set into one group, quantizing the phase coefficients in the group a according to another precision, as an example, quantizing the phase coefficients in the group a according to 3bit precision, that is, 8PSK, quantizing the phase coefficients in the group B according to 2bit, that is, QPSK, and as another example, quantizing the phase coefficients in the group a according to 4bit precision, that is, 16PSK, quantizing the phase coefficients in the group B according to 3bit, that is, QPSKAnd (5) quantifying the mode.

Continuing with the above example, the terminal device may further quantize the set of differential amplitude coefficients from the quantized set of wideband amplitude coefficients. Specifically, the differential amplitude coefficients corresponding to the first 2 quantized wideband amplitude coefficients are grouped, and the differential amplitude coefficients corresponding to the rest quantized wideband amplitude coefficients in the ordered wideband amplitude coefficient set are grouped. 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 differential amplitude coefficient->

The method comprises the steps of dividing the differential amplitude coefficients into one group, quantizing the differential amplitude coefficients according to one precision, dividing other differential amplitude coefficients in the differential amplitude coefficient set into one group, and quantizing the differential amplitude coefficients according to the other precision. As one example, differential amplitude coefficients of the first group are quantized to 3bit precision, differential amplitude coefficients of the second group are quantized to 2bit precision, and as another example differential amplitude coefficients of the first group are quantized to 4bit precision, differential amplitude coefficients of the second group are quantized to 3bit precision.

In order to further reduce the feedback overhead of the terminal equipment, the median value of the corresponding differential amplitude coefficient group in each group of phase coefficients in the S groups of phase coefficients is the front D _s S=1, …, and the phase coefficients of S are quantized in a high-precision quantization mode, and the rest of the phase coefficients are quantized in a low-precision quantization mode. Wherein D is _s Is different in value.

Continuing with the above example, with s=2, where the number of wideband amplitude coefficients in a set is 1, d ₁ =4 as an example. Terminal device determines quantized widthThe maximum band amplitude coefficient of the band amplitude coefficients is

The maximum band amplitude coefficient corresponds to a differential amplitude coefficient of +. >

The corresponding phase coefficient is { c _1,0 c _1,1 … c _1,M-1 Further, if the differential amplitude coefficient +.>

The differential amplitude coefficient with the value of the middle value of 4 is

Then the phase coefficient { c } _1，0 c _1，1 … c _1，M-1 The phase coefficients in the two groups are divided into two groups corresponding to differential amplitude coefficients +.>

Is divided into a group of phase coefficients, the group of phase coefficients is quantized by high-precision quantization means, e.g. 8PSK, the phase coefficient { c _1,0 c _1,1 … c _1,M-1 The remaining phase coefficients in the block are quantized using a low-precision quantization scheme, e.g., QPSK.

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

D ₂ For example, =2, wideband amplitude coefficient +.>

The corresponding differential amplitude coefficient is +.>

The corresponding phase coefficient is { c _0，0 c _0，1 … c _0，M-1 Then the differential amplitude coefficient with the value of the differential amplitude coefficient being the previous 2 is selected

Corresponding phase coefficient { c _0，0 c _0，1 Quantized in a high-precision quantization mode, e.g. 8PSK, with phase coefficients { c _0,0 c _0,1 … c _0,M-1 The remaining phase coefficients in the block are quantized using a low-precision quantization scheme, e.g., QPSK.

After the terminal device quantizes the wideband amplitude coefficient set, the differential amplitude coefficient set and the phase coefficient set, 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 need to be reported to the base station, which are described below.

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

Here, the system may preset that the maximum bandwidth amplitude coefficient in the quantized wideband amplitude coefficient set is 1, and the differential amplitude coefficient corresponding to the maximum bandwidth amplitude coefficient is 1, so that only the index of the maximum bandwidth amplitude coefficient and the index of the maximum differential amplitude coefficient are reported without reporting the maximum bandwidth 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, quantization values of phase coefficients equal to zero except for quantization values of phase coefficients corresponding to the index of the maximum differential amplitude coefficient are not reported to the base station or quantization values of phase coefficients corresponding to amplitude coefficients with amplitude coefficients smaller than a preset value are not reported to the base station.

Likewise, 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 wideband amplitude coefficients except the maximum wideband amplitude coefficient in the quantized wideband amplitude coefficient set to the base station.

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

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 equipment multiplies the wideband amplitude coefficient in the quantized wideband amplitude coefficient set and the differential amplitude coefficient in the quantized differential amplitude coefficient set to obtain a fourth amplitude coefficient set, the amplitude coefficients in the fourth amplitude coefficient set are arranged in a sequence from big to small to obtain a fourth ordered amplitude coefficient set, and then the phase coefficients in the phase coefficient set are quantized according to at least two accuracies according to the amplitude coefficients in the fourth ordered amplitude coefficient set. For example, the amplitude coefficients in the ordered fourth set of amplitude coefficients are divided into two groups in order of arrangement, the first group of corresponding phase coefficients are quantized with high precision, e.g. 8PSK, and the second group of corresponding phase coefficients are quantized with low precision, e.g. QPSK. And will not be described in detail herein. In this implementation manner, after the phase coefficients in the phase coefficient set are quantized, the terminal device may report, to the base station, the quantized values of the phase coefficients except for the phase coefficient corresponding to the maximum differential amplitude coefficient and the phase coefficient other than the phase coefficient corresponding to the first amplitude coefficient, where the first amplitude coefficient is an amplitude coefficient smaller than a preset value in the product of the wideband amplitude coefficient and the differential amplitude coefficient set.

2. A wideband amplitude coefficient corresponds to a basis vector

In this implementation, the coefficients are

Expressed as:

wherein the matrix

Is a set of diagonal elements->

For the wideband amplitude coefficient set of the codebook, a basis vector i (i=0, 1, …, M-1) corresponds to one wideband amplitude coefficient +.>

Corresponding to a group of differential amplitude coefficients->

And a set of phase coefficients { c _0,i c _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 basis vector are the same as the implementation mode in 1, 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 not described in detail herein.

Implementation IV

The terminal equipment determines 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; and the terminal equipment quantizes the wideband phase coefficients in the wideband phase coefficient set and the differential phase coefficients in the differential phase coefficient set according to at least two different accuracies according to the quantized wideband amplitude coefficient set so as to obtain the quantized wideband phase coefficient set and the quantized differential phase coefficient set.

In this implementation, the coefficients are

Expressed as:

wherein the matrix

Is a set of diagonal elements

For a wideband amplitude coefficient set of the 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 +.>

Corresponding to a group of differential amplitude coefficients->

And a set of phase coefficients { c _i,0 c _i,1 … c _i,M-1 }。

In the fifth implementation manner, a calculation manner of one wideband amplitude coefficient in the wideband amplitude coefficient set is the same as the three implementation manners, and is not described in detail herein.

One wideband phase coefficient of the wideband phase coefficient set may be calculated as follows, each of which is described below.

Mode A

The value of one wideband phase coefficient in the wideband phase coefficient set is the phase coefficient corresponding to the largest amplitude coefficient in the amplitude coefficient set corresponding to one beam. That is, the maximum value of the amplitude coefficient in the amplitude coefficient group corresponding to each beam is determined, which 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 of the phase coefficient values in the phase coefficient set corresponding to one beam. That is, the average value of the phase coefficients in the phase coefficient group corresponding to each beam is determined as follows:

Mode C

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

Correspondingly, the differential phase coefficient can be obtained by the following formula, in particular:

after the wideband amplitude coefficient set, the differential amplitude coefficient set, the wideband phase coefficient set and the differential phase coefficient set are determined, the differential amplitude coefficient set, the wideband phase coefficient set and the differential phase coefficient set are quantized according to at least two accuracies according to the quantized wideband amplitude coefficient set, and the quantization process is the same as the quantization mode in the implementation mode III (1), and is not repeated here. Meanwhile, the normalization processing of the wideband amplitude coefficient set, the differential amplitude coefficient set, the wideband phase coefficient set and the differential phase coefficient set is the same as the normalization mode in the implementation mode III (1), and is not repeated here.

Implementation 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 wave 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 kinds of precision 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 positions and the numbers of the quantized phase coefficient set and the phase coefficients with zero values.

In this implementation, the coefficients are

Expressed as:

wherein the matrix

Is a set of diagonal elements->

For the first wideband amplitude coefficient set of the codebook, one beam i (i=0, 1, …, 2L-1) corresponds to one first wideband amplitude coefficient in the first wideband amplitude coefficient set +.>

Matrix->

Is a set of diagonal elements

For the second wideband amplitude coefficient set of the codebook, a base directionThe quantity i (i=0, 1, …, M-1) corresponds to one of the second wideband amplitude coefficients of the second wideband amplitude coefficient set. />

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 the implementation three 1, and 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 the implementation three 2. In the specific implementation process, the first wideband amplitude coefficient set may be calculated first, and then the second wideband amplitude coefficient set may be calculated first, or the second wideband amplitude coefficient set may be calculated first, and then the first wideband amplitude coefficient set may be calculated, which is not limited in the embodiment of the present application.

The differential amplitude coefficient can be obtained through calculation according to the following formula, and the specific formula is as follows:

In the embodiment of the present application, in order 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 manner involved includes, but is not limited to, the following several implementation manners, and the following description is given separately.

Normalization mode A

The terminal device normalizes the largest first wideband amplitude coefficient in the first wideband amplitude coefficient set to 1, the largest second wideband amplitude coefficient in the second wideband amplitude coefficient set to 1, and normalizes the differential amplitude coefficient at the intersection point of the row where the largest first wideband amplitude coefficient is located and the column where the largest second wideband amplitude coefficient is located to 1, and normalizes the phase coefficient at the intersection point of the row where the largest first wideband amplitude coefficient is located and the column where the largest second wideband amplitude coefficient is located to zero.

In the 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 wideband amplitude coefficient set is +.>

Then->

c _1,1 ＝1。

Normalization mode B

The terminal equipment normalizes a first broadband amplitude coefficient of a row where the maximum amplitude coefficient is located in the amplitude coefficient set to be 1, normalizes a second broadband amplitude coefficient of a column where the maximum amplitude coefficient is located to be 1, normalizes a differential amplitude coefficient of a 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 } _0,0 p _0,1 … p _0,M-1 p _1,0 p _1,1 … p _1,M-1 … p _2L-1,0 p _2L-1,1 … p _2L-1,M-1 The largest amplitude coefficient in } is p _2L-1,1 Then there is

c _2L-1,1 ＝1。

After determining the first wideband amplitude coefficient set and the second wideband amplitude coefficient set, the first wideband amplitude coefficient set, the second wideband amplitude coefficient set, and the differential amplitude coefficient set are quantized respectively, specifically, the terminal device may quantize the first wideband amplitude coefficient in the first wideband amplitude coefficient set according to a quantization mode with the same precision, quantize the second wideband amplitude coefficient in the second wideband amplitude coefficient set according to a quantization mode with the same precision, and quantize the differential amplitude coefficient in the differential amplitude coefficient set according to a quantization mode with the same precision, so as 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 3bit quantization mode or in a 2bit quantization mode, or in other quantization modes, where the quantization modes may be defined by a system or indicated by a base station.

In a fifth implementation manner, the terminal device quantizes the differential amplitude coefficient set and the phase coefficient set according to at least two kinds of precision according to the quantized first wideband amplitude coefficient set and the quantized second wideband amplitude coefficient set. Specifically, the terminal equipment arranges the quantized first wideband amplitude coefficients in order from large to small to obtain a first ordered wideband amplitude coefficient set, and arranges the quantized second wideband amplitude coefficients in order from large to small to obtain a second ordered wideband amplitude coefficient set; the phase coefficients corresponding to the first Q second wideband amplitude coefficients in the first wideband amplitude coefficient set are quantized in a first quantization mode, the phase coefficients corresponding to the last M-Q second wideband amplitude coefficients in the second wideband amplitude coefficient set are set to be 0, and the other phase coefficients in the phase coefficient set are quantized in a second quantization mode to obtain a quantized phase coefficient set; wherein P is an integer of 1 or more, Q is an integer of 1 or more, and the accuracy of the first quantization mode is higher than the accuracy of the second quantization mode.

Wherein, P and Q can be predefined by the system, can be configured by the base station for the terminal device, or can be determined by the terminal device itself. Here, 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 in the quantized second wideband amplitude coefficients is +.>

Will correspond to

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

Corresponding phase coefficient { c _0,0 c _1,0 … c _2L-1,0 Phase coefficient c at the intersection of } _1,1 Quantization using a first quantization mode as an example 8PSK; and setting the phase coefficient at the intersection point of the phase coefficient groups corresponding to the second M-1 second wideband amplitude coefficients in the phase coefficient groups corresponding to the second 2L-1 first wideband amplitude coefficients in the quantized first wideband amplitude coefficients to zero, and quantizing other phase coefficients in the phase coefficient set in a second quantization mode to serve as an example QPSK.

In this implementation manner, the quantization manner of the differential amplitude coefficient set is the same as the quantization manner of the phase coefficient set, and will not be 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, 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 need to be reported 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 the indexes of the largest first wideband amplitude coefficient in the ordered first wideband amplitude coefficient set and the indexes of the largest second wideband amplitude coefficient in the ordered second wideband amplitude coefficient set to the base station except the phase coefficients corresponding to the differential amplitude coefficients of the row where the largest first wideband amplitude coefficient is located and the column where the largest second wideband amplitude coefficient is located.

Likewise, 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 wideband amplitude coefficients except the largest first wideband amplitude coefficient in the quantized first wideband amplitude coefficient set to the base station, and reporting all or part of the wideband amplitude coefficients except the largest second wideband amplitude coefficient in the quantized second wideband amplitude coefficient set to the base station.

It should be noted 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, multiplying the differential amplitude coefficient in the quantized differential amplitude coefficient set by the first wideband amplitude coefficient in the quantized first wideband amplitude coefficient set and the second wideband amplitude coefficient in the quantized second wideband amplitude coefficient set to obtain the first amplitude coefficient set, and then quantizing the phase coefficient in the phase coefficient set according to the first amplitude coefficient set, where the quantization mode is the same as that in the first implementation mode and will not be described herein. In this implementation manner, the terminal device reports to the network device a quantized value of a phase coefficient corresponding to a differential amplitude coefficient except for a phase coefficient corresponding to an intersection point of the maximum first wideband amplitude index and the maximum second wideband amplitude index, where the quantized value is smaller than a preset value in products of the differential amplitude coefficient in the first wideband amplitude coefficient set of the ordered first wideband amplitude coefficient and the quantized differential amplitude coefficient in the second wideband amplitude coefficient set of the ordered second wideband amplitude coefficient set.

The apparatus provided in the embodiments of the present application will be described below with reference to the accompanying drawings.

Referring to fig. 3, based on the same inventive concept, an embodiment of the present application provides a terminal device, which in one implementation 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 (central processing unit, CPU), or an application-specific integrated circuit (ASIC), may be one or more integrated circuits for controlling program execution, may be a baseband chip, etc. The amount of memory may be one or more, and the memory may be read-only memory (ROM), random access memory (random access memory, RAM) or disk memory, etc.

By programming the processor 301, the code corresponding to the foregoing information transmission method may be cured into the chip, so that the chip can execute the following steps during operation:

the method comprises the steps of quantizing phase coefficients in a phase coefficient set of a codebook according to at least two different accuracies according to amplitude coefficients in the amplitude coefficient set of the codebook, wherein one phase coefficient is quantized according to one accuracy 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;

A transmitter 302 for reporting information related to the quantized set of phase coefficients 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 accuracies according to the amplitude coefficients in the amplitude coefficient set of the codebook, to obtain a quantized phase coefficient set, the method is specifically used for:

Optionally, the terminal device further includes:

a transmitter 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, 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;

When the processor 301 quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different accuracies according to the amplitude coefficients in the amplitude coefficient set of the codebook, to obtain a quantized phase coefficient set, the method is specifically used for:

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 a quantized phase coefficient set, the method is specifically used for:

Alternatively to this, the method may comprise,

When the processor 301 quantizes the phase coefficients in the phase coefficient set according to at least two kinds of precision according to the quantized first wideband amplitude coefficient set, the quantized second wideband amplitude coefficient set and/or the quantized differential phase coefficient set, the method is specifically used for:

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 specifically is used for:

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, where the parameter information is used to quantize a phase coefficient in a phase coefficient set of a codebook;

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

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

a quantization unit 501, configured to quantize phase coefficients in a set of phase coefficients of a codebook according to at least two different accuracies according to an amplitude coefficient in the set of amplitude coefficients of the codebook, where one phase coefficient is quantized according to one accuracy to obtain a quantized set of phase coefficients, where the amplitude coefficient is used to characterize an amplitude of an element in the codebook, and the phase coefficient is used to characterize a phase of the element in the codebook;

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

Optionally, when the quantization unit 501 quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different accuracies 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 terminal device further includes a receiving unit 503, configured to receive the 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, 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;

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

Alternatively to this, the method may comprise,

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

Optionally, the terminal device further includes:

Optionally, when the reporting unit 502 reports 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 a phase coefficient in a phase coefficient set of a codebook;

a receiving unit 602, configured to receive information related to a quantized set of phase coefficients sent by the terminal device, where the quantized set of phase coefficients is obtained by quantizing, by the terminal device according to the configuration information and an amplitude coefficient set of the codebook, phase coefficients in the set of phase coefficients of the codebook according to at least two different accuracies, where one phase coefficient in the set of phase coefficients 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 embodiment of the application also provides a computer storage medium, which may include a memory, where the memory may store a program, where the program includes all the steps executed by the terminal device and the network device in the foregoing method embodiment shown in fig. 2.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present embodiments 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 on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 foregoing embodiments are merely used to describe the technical solutions of the present application in detail, but the descriptions of the foregoing embodiments are merely used to facilitate understanding of the methods of the embodiments of the present invention and should not be construed as limiting the embodiments of the present invention. Variations or alternatives readily apparent to those skilled in the art are intended to be encompassed 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 accuracies according to amplitude coefficients in the amplitude coefficient set of the codebook, wherein one phase coefficient is quantized according to one accuracy 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;

reporting information related to the quantized phase coefficient set to a network device;

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

2. The method of claim 1, wherein quantizing the phase coefficients in the set of phase coefficients of the codebook according to at least two different accuracies from the magnitude coefficients in the set of magnitude coefficients of the codebook to obtain the quantized set of phase coefficients comprises:

3. The method of claim 1, wherein quantizing the phase coefficients in the set of phase coefficients of the codebook according to at least two different accuracies from the magnitude coefficients in the set of magnitude coefficients of the codebook to obtain the quantized set of phase coefficients comprises:

4. A method according to claim 3, characterized in that the method further comprises:

5. A method according to claim 3, wherein quantizing the phase coefficients in the set of phase coefficients according to at least two different accuracies from the quantized wideband amplitude coefficient set to obtain the quantized set of phase coefficients comprises:

6. The method according to claim 3 or 5, wherein,

7. A method according to claim 3, wherein 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;

8. The method of claim 7, wherein the method further comprises:

9. The method of claim 8, wherein reporting information related to the quantized phase coefficients to a network device comprises:

10. An information transmission method, comprising:

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

receiving information related to quantized phase coefficient sets sent by the terminal equipment, wherein the quantized phase coefficient sets are obtained by quantizing phase coefficients in the phase coefficient sets of the codebook according to at least two different accuracies by the terminal equipment according to the configuration information and the amplitude coefficient sets of the codebook, one phase coefficient in the phase coefficient sets of the codebook is quantized according to one accuracy, 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;

The quantized phase coefficient set is obtained by dividing amplitude coefficients in the ordered amplitude coefficient set into T groups of amplitude coefficients according to an arrangement sequence by the terminal equipment and quantizing T groups of phase coefficients corresponding to the T groups of amplitude coefficients according to T kinds of precision, wherein the ordered amplitude coefficient set is obtained by arranging quantized amplitude coefficients by the terminal equipment according to a sequence from large to small; wherein, the T kinds of precision are sequentially reduced according to the index sequence of T, and T is an integer greater than or equal to 2.

11. The method of claim 10, wherein the configuration information includes a feedback mode in which the terminal device sends feedback information to the network device, the feedback mode including a first feedback mode and a second feedback mode, the highest precision of a quantization mode corresponding to the first feedback mode being higher than the highest precision of a quantization mode corresponding to the second feedback mode.

12. A terminal device, comprising:

a processor configured to quantize phase coefficients in a set of phase coefficients of a codebook according to at least two different accuracies according to an amplitude coefficient in the set of amplitude coefficients of the codebook, where one phase coefficient is quantized according to one accuracy to obtain a quantized set of phase coefficients, where the amplitude coefficient is used to characterize an amplitude of an element in the codebook, and the phase coefficient is used to characterize a phase of the element in the codebook;

A transmitter for reporting information related to the quantized phase coefficient set to a network device;

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

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

14. The terminal device according to claim 12, wherein when the processor quantizes the phase coefficients in the phase coefficient set of the codebook according to at least two different accuracies 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 of claim 14, wherein the processor is further configured to:

16. The terminal device according to claim 14, wherein when the processor quantizes the phase coefficients in the set of phase coefficients according to at least two different accuracies according to the quantized set of wideband amplitude coefficients to obtain a quantized set of phase coefficients, the method is specifically used for:

17. Terminal device according to claim 14 or 16, characterized in that,

18. The terminal device of claim 14, wherein 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;

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

19. The terminal device of claim 18, wherein the processor is further configured to:

20. The terminal device according to claim 19, wherein when the transmitter reports information related to the quantized phase coefficients to a network device, the transmitter is specifically configured to:

And reporting quantized values of phase coefficients corresponding to the differential amplitude coefficients except for the intersection point of the index of the maximum first wideband amplitude and the index of the maximum second wideband amplitude in the ordered first wideband amplitude coefficient set and other phase coefficients except for 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 products of the first wideband amplitude coefficient in the ordered first wideband amplitude coefficient set and the differential amplitude coefficient in the differential amplitude coefficient set after quantization in the ordered second wideband amplitude coefficient set.

21. 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 for quantizing a phase coefficient in a phase coefficient set of a codebook;

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

22. The network device of claim 21, wherein the configuration information includes a feedback mode in which the terminal device sends feedback information to the network device, the feedback mode including a first feedback mode and a second feedback mode, the first feedback mode corresponding to a quantization mode having a highest precision higher than a highest precision of a quantization mode corresponding to the second feedback mode.

23. A terminal device, comprising:

a quantization unit, configured to quantize phase coefficients in a phase coefficient set of a codebook according to at least two different accuracies according to an amplitude coefficient in the amplitude coefficient set of the codebook, where one phase coefficient quantizes according to one accuracy 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;

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

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

24. A network device, comprising:

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 according to the configuration information and an amplitude coefficient set of the codebook, phase coefficients in the phase coefficient set of the codebook according to at least two different accuracies, 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;

25. A computer storage medium having instructions stored therein which, when executed on a computer, cause the computer to perform the method of any of claims 1-9 or 10-11.