CN118784142A - CSI reporting method, device, terminal and network equipment - Google Patents

Abstract

The present application provides a CSI reporting method, device, terminal and network equipment. The method includes: obtaining non-zero coefficients of CSI to be reported; determining that among the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index of the first value are the first group, and/or the non-zero coefficients with a priority level higher than the preset level are the first group; the non-zero coefficients other than the first group among the non-zero coefficients are the second group; mapping the first group to Group1 of CSI Part2 of the second part of CSI, and mapping the second group to Group2 of CSI Part2 to obtain the coded data of CSI to be reported; sending the CSI to be reported to the network device according to the coded data. Using this method, the non-zero coefficients of the Doppler domain index corresponding to the strongest coefficient and/or the non-zero coefficients higher than the preset level are mapped to Group1 of CSI Part2, so that the system performance can be guaranteed even if CSI discard occurs.

Description

CSI reporting method, device, terminal and network equipment

Technical Field

The present application relates to the field of wireless technology, and in particular to a CSI reporting method, apparatus, terminal and network equipment.

Background Art

When the terminal reports the channel state information CSI, if the CSI overhead to be reported exceeds the uplink resources allocated by the base station, a part of the CSI needs to be discarded to ensure that the remaining CSI can be correctly decoded. Among them, the reporting overhead of non-zero coefficients in CSI accounts for a large proportion of CSI feedback. Therefore, when CSI is discarded, the order in which non-zero coefficients are discarded is very critical to ensure system performance.

Currently, in the codebook used for CSI coding, the index of the non-zero coefficient is jointly determined by the layer, spatial domain and frequency domain index information, and the priority definition and grouping method of the non-zero coefficient is determined based on the layer, spatial domain and frequency domain index information.

After the introduction of Doppler domain information, how to encode and report CSI to ensure system performance when CSI loss occurs and normal reporting of non-zero coefficients corresponding to important data in CSI has become an important issue that needs to be solved in current CSI reporting.

Summary of the invention

The purpose of the present application is to provide a CSI reporting method, apparatus, terminal and network equipment, which are used to encode and report CSI based on the introduction of Doppler domain information, so as to ensure the system performance when CSI is discarded.

The embodiment of the present application provides a channel state information CSI reporting method, wherein the method is performed by a terminal, and the method includes:

Obtain non-zero coefficients of the CSI to be reported;

Determine that among the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index of the first value are the first group, and/or the non-zero coefficients having a priority level higher than a preset level are the first group; and the non-zero coefficients among the non-zero coefficients except the first group are the second group; wherein the first value is the Doppler domain index corresponding to the strongest coefficient;

Mapping the first group to Group 1 of CSI Part 2, and mapping the second group to Group 2 of CSI Part 2, to obtain the coded data of the CSI to be reported;

The CSI to be reported is sent to the network device according to the encoded data.

Optionally, in the CSI reporting method, determining that the non-zero coefficients in the non-zero coefficients other than the first group are a second group includes:

Determine, among the non-zero coefficients, that the non-zero coefficients corresponding to the Doppler domain index of the second value are the second group;

The second value is different from the first value.

Optionally, the CSI reporting method, wherein determining, among the non-zero coefficients, the non-zero coefficients having a priority level higher than a preset level as a first group, and determining, among the non-zero coefficients, the non-zero coefficients other than the first group as a second group, includes:

According to the order of priority levels of the plurality of non-zero coefficients from low to high, determining that the non-zero coefficients corresponding to the priority levels arranged in the first N positions are the second group, and determining that the non-zero coefficients corresponding to the priority levels arranged in the M positions after the first N positions are the first group;

Wherein, M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the Nth bit.

Optionally, the CSI reporting method further includes:

Determining a priority value of each non-zero coefficient according to a Doppler domain index, a layer index, a spatial domain index, and a frequency domain index corresponding to the non-zero coefficient;

Determining the priority level of the corresponding non-zero coefficient according to the priority value of each non-zero coefficient;

The priority values are arranged from large to small, and the corresponding priority levels vary from low to high.

Optionally, in the CSI reporting method, when determining that, in the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index having the first value are in the first group, the method further includes:

The number of the non-zero coefficients in the first group is mapped to a target field in the CSI Part 1.

Optionally, in the CSI reporting method, when determining that, in the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index having the first value are in the first group, the method further includes:

The Doppler domain basis vector indication information in the CSI to be reported is mapped to Group 2 of CSI Part 2.

Optionally, the CSI reporting method further includes:

The bit width B _W of the target field is determined according to at least one of the following methods:

When the maximum number of layers of CSI to be reported is 1, determine

When the maximum number of layers of CSI to be reported is not 1, determine

Wherein, K ₀ =β2LM ₁ Q; L is the number of spatial domain basis vectors in the CSI to be reported, M ₁ is the number of time-frequency domain basis vectors with a maximum layer number of 1, Q is the number of Doppler domain basis vectors in the CSI to be reported; β is a preset coefficient.

Optionally, in the CSI reporting method, the non-zero coefficient includes an amplitude coefficient and/or a phase coefficient;

The method further comprises: determining N and M in the following manner:

Among them, K ^NZ is the total number of the non-zero coefficients in the CSI to be reported; v is the number of layers of the CSI to be reported.

Optionally, in the CSI reporting method, the non-zero coefficient includes position indication information;

The method further comprises: determining N and M in the following manner:

Among them, K ^NZ is the total number of non-zero coefficients in the CSI to be reported; v is the number of layers of the CSI to be reported; L is the number of spatial domain basis vectors in the CSI to be reported, _MV is the number of frequency domain basis vectors in the CSI to be reported, and Q is the number of Doppler domain basis vectors in the CSI to be reported.

Optionally, in the CSI reporting method, when determining that among the non-zero coefficients, the non-zero coefficients having a priority level higher than a preset level are in the first group, the method further includes:

The Doppler domain basis vector indication information in the CSI to be reported is mapped to Group 1 of CSI Part 2.

Optionally, the CSI reporting method, wherein determining the priority value of each non-zero coefficient according to the Doppler domain index, layer index, spatial domain index and frequency domain index corresponding to the non-zero coefficient, includes:

According to the following formula 1, the priority value Pri(l,i,f,d) of each non-zero coefficient is determined according to the order of priority of the layer index, the spatial domain index, the frequency domain index and the Doppler domain index from high to low:

Formula 1: Pri(l,i,f,d)＝2LvN ₃ d+2Lvπ(f)+vi+l;

and/or

According to the following formula 2, the priority value Pri(l,i,d,f) of each non-zero coefficient is determined according to the order of priority of the layer index, the spatial domain index, the Doppler domain index and the frequency domain index from high to low:

Formula 2: Pri(l,i,d,f)=2LvQπ(f)+2Lvd+vi+l;

and/or

According to the following formula 3, the priority value Pri(l, d, i, f) of each non-zero coefficient is determined according to the order of priority of the layer index, Doppler domain index, spatial domain index and frequency domain index from high to low:

Formula 3: Pri(l,d,i,f)＝2LvQπ(f)+vQi+vd+l;

Wherein, l is the layer index, and l=1,2,…,v; i is the spatial domain index, and i=0,1,…,2L-1; f is the frequency domain index, and f=0,1,…,M _v -1; d is the Doppler domain index, and d=0,1,…,Q-1;

v is the number of layers of the CSI to be reported; L is the number of spatial domain basis vectors in the CSI to be reported; M _v is the number of frequency domain basis vectors in the CSI to be reported; Q is the number of Doppler domain basis vectors in the CSI to be reported; N ₃ is the total number of frequency domain basis vectors; π(f) is the permutation function of the frequency domain index f.

Optionally, the CSI reporting method, wherein, according to the coded data, sending the CSI to be reported to the network device, includes:

When the amount of uplink channel resources allocated by the network device is less than the amount of resources required by the coded data, discard Group 2 of the CSI Part 2 to obtain the reporting data of the CSI to be reported;

The reported data is sent to the network device.

The embodiment of the present application further provides a channel state information CSI reporting method, wherein the method is performed by a network device, and the method includes:

Receive CSI reported by the terminal;

The non-zero coefficients in Group1 of the second part CSI Part2 of the CSI are the first group;

The Doppler domain index corresponding to the non-zero coefficient in the first group is a first value; and/or the priority level of the non-zero coefficient in the first group is higher than a preset level;

The first value is the Doppler domain index corresponding to the strongest coefficient.

Optionally, in the CSI reporting method, the non-zero coefficients in Group2 of the second part CSI Part2 of the CSI are a second group, and the second group includes the non-zero coefficients of the CSI except the first group.

Optionally, in the CSI reporting method, the Doppler domain index corresponding to the non-zero coefficient in the second group is a second value; and the second value is different from the first value.

Optionally, in the CSI reporting method, when, in the CSI, the priority level of the non-zero coefficients in the first group is higher than a preset level, the method further includes:

According to the order of priority levels of the plurality of non-zero coefficients from low to high, determining that the non-zero coefficients corresponding to the priority levels arranged in the first N bits are the second group, and the non-zero coefficients corresponding to the priority levels arranged in M bits after the first N bits are the first group;

Wherein, M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the Nth bit.

Optionally, in the CSI reporting method, when the Doppler domain index corresponding to the non-zero coefficient in the first group is a first value, the method further includes:

The number of the non-zero coefficients in Group 1 of the CSI Part 2 is determined according to a target field in a CSI Part 1 of the CSI.

Optionally, in the CSI reporting method, when the Doppler domain index corresponding to the non-zero coefficient in the first group is a first value, the method further includes:

According to Group 2 of CSI Part 2 of the CSI, Doppler domain basis vector indication information in the CSI is determined.

Optionally, the CSI reporting method further includes:

The bit width B _W of the target field is determined according to at least one of the following methods:

When the maximum number of layers of the CSI is 1, determine

When the maximum number of layers of the CSI is not 1, determine

Wherein, K ₀ =β2LM ₁ Q; L is the number of spatial domain basis vectors in the CSI, M ₁ is the number of time-frequency domain basis vectors with a maximum layer number of 1, Q is the number of Doppler domain basis vectors in the CSI; β is a preset coefficient.

Optionally, in the CSI reporting method, the non-zero coefficient includes an amplitude coefficient and/or a phase coefficient;

in,

Among them, K ^NZ is the total number of the non-zero coefficients in the CSI; v is the number of layers of the CSI.

Optionally, in the CSI reporting method, the non-zero coefficient includes position indication information;

in,

Among them, K ^NZ is the total number of non-zero coefficients in the CSI; v is the number of layers of the CSI; L is the number of spatial domain basis vectors in the CSI, _MV is the number of reported frequency domain basis vectors in the CSI, and Q is the number of Doppler domain basis vectors in the CSI.

Optionally, in the CSI reporting method, when, in the CSI, the priority level of the non-zero coefficients in the first group is higher than a preset level, the method further includes:

According to Group 1 of CSI Part 2 of the CSI, Doppler domain basis vector indication information in the CSI is determined.

Optionally, the CSI reporting method further includes:

According to the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part1 of the CSI, it is determined whether data in Group2 of CSI Part2 of the CSI is discarded.

Optionally, the CSI reporting method further includes:

When it is determined that data in Group 2 of CSI Part 2 of the CSI is discarded based on the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part 1 of the CSI, the actual data size of Group 1 of the CSI Part 2 is determined based on the number of non-zero coefficients in Group 1 of the CSI Part 2 recorded in the CSI Part 1.

Optionally, the CSI reporting method further includes:

When it is determined that data in Group 2 of CSI Part 2 of the CSI is discarded based on the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part 1 of the CSI, the number of non-zero coefficients in Group 1 of CSI Part 2 is determined based on the value of M, and the actual data size of Group 1 of the CSI Part 2 is determined.

The embodiment of the present application further provides a terminal, which includes a memory, a transceiver, and a processor:

A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

Obtain non-zero coefficients of the CSI to be reported;

Determine that among the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index of the first value are the first group, and/or the non-zero coefficients having a priority level higher than a preset level are the first group; and the non-zero coefficients among the non-zero coefficients except the first group are the second group; wherein the first value is the Doppler domain index corresponding to the strongest coefficient;

Mapping the first group to Group 1 of CSI Part 2, and mapping the second group to Group 2 of CSI Part 2, to obtain the coded data of the CSI to be reported;

The CSI to be reported is sent to the network device according to the encoded data.

Optionally, in the terminal, the processor determines that the non-zero coefficients other than the first group are the second group, comprising:

Determine, among the non-zero coefficients, that the non-zero coefficients corresponding to the Doppler domain index of the second value are the second group;

The second value is different from the first value.

Optionally, in the terminal, the processor determines that among the non-zero coefficients, the non-zero coefficients having a priority level higher than a preset level are a first group, and that among the non-zero coefficients, the non-zero coefficients other than the first group are a second group, comprising:

According to the order of priority levels of the plurality of non-zero coefficients from low to high, determining that the non-zero coefficients corresponding to the priority levels arranged in the first N positions are the second group, and determining that the non-zero coefficients corresponding to the priority levels arranged in the M positions after the first N positions are the first group;

Wherein, M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the Nth bit.

Optionally, in the terminal, the processor is further configured to:

Determining a priority value of each non-zero coefficient according to a Doppler domain index, a layer index, a spatial domain index, and a frequency domain index corresponding to the non-zero coefficient;

Determining the priority level of the corresponding non-zero coefficient according to the priority value of each non-zero coefficient;

The priority values are arranged from large to small, and the corresponding priority levels vary from low to high.

Optionally, in the terminal, when determining that, in the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index having the first value are in the first group, the processor is further configured to:

The number of the non-zero coefficients in the first group is mapped to a target field in the CSI Part 1.

Optionally, in the terminal, when determining that, in the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index having the first value are in the first group, the processor is further configured to:

The Doppler domain basis vector indication information in the CSI to be reported is mapped to Group 2 of CSI Part 2.

Optionally, in the terminal, when determining that, among the non-zero coefficients, the non-zero coefficients having a priority level higher than a preset level are the first group, the processor is further configured to:

The Doppler domain basis vector indication information in the CSI to be reported is mapped to Group 1 of CSI Part 2.

The embodiment of the present application further provides a network device, which includes a memory, a transceiver, and a processor:

A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

Receive CSI reported by the terminal;

The non-zero coefficients in Group1 of the second part CSI Part2 of the CSI are the first group;

The Doppler domain index corresponding to the non-zero coefficient in the first group is a first value; and/or the priority level of the non-zero coefficient in the first group is higher than a preset level;

The first value is the Doppler domain index corresponding to the strongest coefficient.

Optionally, in the network device, the non-zero coefficients in Group2 of the second part CSI Part2 of the CSI are a second group, and the second group includes the non-zero coefficients of the CSI except the first group.

Optionally, in the network device, when, in the CSI, the priority level of the non-zero coefficient in the first group is higher than a preset level, the processor is further configured to:

According to the order of priority levels of the plurality of non-zero coefficients from low to high, determining that the non-zero coefficients corresponding to the priority levels arranged in the first N bits are the second group, and the non-zero coefficients corresponding to the priority levels arranged in M bits after the first N bits are the first group;

Wherein, M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the Nth bit.

Optionally, in the network device, when the Doppler domain index corresponding to the non-zero coefficient in the first group is a first value, the processor is further configured to:

The number of the non-zero coefficients in Group 1 of the CSI Part 2 is determined according to a target field in a CSI Part 1 of the CSI.

Optionally, in the network device, when the Doppler domain index corresponding to the non-zero coefficient in the first group is a first value, the processor is further configured to:

According to Group 2 of CSI Part 2 of the CSI, Doppler domain basis vector indication information in the CSI is determined.

One embodiment of the present application further provides a channel state information CSI reporting device, which is applied to a terminal, and the device includes:

An acquisition module, used to acquire non-zero coefficients of the CSI to be reported;

A grouping module, configured to determine that among the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index of the first value are the first group, and/or the non-zero coefficients having a priority level higher than a preset level are the first group; and the non-zero coefficients among the non-zero coefficients except the first group are the second group; wherein the first value is the Doppler domain index corresponding to the strongest coefficient;

a data mapping module, configured to map the first group to Group 1 of the second part CSI Part 2 of the CSI, and map the second group to Group 2 of the CSI Part 2, to obtain the coded data of the CSI to be reported;

The sending module is used to send the CSI to be reported to the network device according to the encoded data.

The embodiment of the present application further provides a channel state information CSI reporting device, which is applied to a network device, and the device includes:

A receiving module, used for receiving CSI reported by the terminal;

The non-zero coefficients in Group1 of the second part CSI Part2 of the CSI are the first group;

The Doppler domain index corresponding to the non-zero coefficient in the first group is a first value; and/or the priority level of the non-zero coefficient in the first group is higher than a preset level;

The first value is the Doppler domain index corresponding to the strongest coefficient.

The embodiment of the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the CSI reporting method as described in any one of the above items. The beneficial effects of the above technical solution of the present application are as follows:

By adopting the CSI reporting method described in the embodiment of the present application, the non-zero coefficients are grouped so that the non-zero coefficients corresponding to the Doppler domain index of the first value are the first group and mapped to Group 1 of CSI Part 2, and/or the non-zero coefficients with a priority level higher than a preset level are the first group and mapped to Group 1 of CSI Part 2. In this way, the non-zero coefficients of the Doppler domain index corresponding to the strongest coefficient are mapped to Group 1 of CSI Part 2, and/or the non-zero coefficients higher than the preset level are mapped to Group 1 of CSI Part 2, that is, the important data in the CSI is transmitted through Group 1 of CSI Part 2, and the system performance will not be affected by the terminal discarding Group 2 of CSI Part 2.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a wireless communication system architecture according to an embodiment of the present application;

FIG2 is a schematic diagram of a CSI reporting method according to one implementation of an embodiment of the present application;

FIG3 is a schematic diagram of a flow chart of a CSI reporting method according to another implementation of an embodiment of the present application;

FIG4 is a schematic diagram of the structure of the terminal according to an embodiment of the present application;

FIG5 is a schematic diagram of the structure of a network device according to an embodiment of the present application;

FIG6 is a schematic diagram of the structure of a CSI reporting device according to one implementation mode of an embodiment of the present application;

FIG7 is a schematic diagram of the structure of a CSI reporting device according to another implementation of an embodiment of the present application.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

In the embodiments of the present application, the term "and/or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and/or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects before and after are in an "or" relationship.

In the embodiment of the present application, the term "multiple" refers to two or more than two, and other quantifiers are similar. The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new air interface (NR) system, etc. These various systems include terminal equipment and network equipment. The system may also include core network parts, such as the Evolved Packet System (EPS), 5G System (5GS), etc.

FIG1 shows a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal device 11 and a network device 12 .

The terminal device 11 involved in the embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and/or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

The network device 12 involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

The following first introduces the contents involved in the solution provided in the embodiment of the present application.

In current communication technologies, a layer of the Type II codebook used for CSI reporting can be represented as a precoding matrix of N _Tx *N ₃ :

in,

The dimension of the spatial basis vector set W ₁ is N _Tx *2L, and the same L candidate beams are fed back in different layers and polarization directions;

The dimension of the frequency domain basis vector set W _f is N ₃ *M _v , and each layer independently selects M _v frequency domain basis vectors;

Linear merging coefficient The dimension is 2L*M _v , and different layers are fed back respectively; the amplitude and phase of at most K ₀ (RI＝1) or 2K ₀ (RI>1) non-zero combining coefficients are fed back, wherein the feedback of the amplitude coefficient is in the form of reference amplitude+differential amplitude.

For each layer, the linear pooling coefficient There are 2LM _v positions in total. All layers on the terminal side report at most K ^NZ non-zero coefficients. The amplitude and phase of the reported non-zero coefficients correspond to The positions in (each position is identified by the spatial domain basis vector index and the frequency domain basis vector index) are indicated by 2LM _v bits of information, with a value of 1 or 0. A value of 1 indicates that the non-zero coefficient of the position is fed back, and a value of 0 indicates that the coefficient of the position is not reported and the value is 0.

Based on the above coding method, in common technology, the index of non-zero coefficients is determined by layer index, spatial domain index and frequency domain index information. Based on the introduction of Doppler domain information, how to group non-zero coefficients based on Doppler domain index to ensure system performance when CSI loss occurs has become an important issue that needs to be solved in current CSI reporting.

To solve the above problem, an embodiment of the present application provides a CSI reporting method, which is executed by a terminal. As shown in FIG2 , the method includes:

S210, obtaining a non-zero coefficient of the CSI to be reported;

The acquired CSI to be reported may be represented by a precoding matrix, and the non-zero coefficients of the CSI to be reported include amplitude, phase, and position indication information.

S220, determining that among the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index of the first value are the first group, and/or the non-zero coefficients having a priority level higher than a preset level are the first group; and the non-zero coefficients among the non-zero coefficients except the first group are the second group; wherein the first value is the Doppler domain index corresponding to the strongest coefficient;

The non-zero coefficients of the CSI can be indicated by a layer index, a spatial domain index, a frequency domain index, and a Doppler domain index. Each non-zero coefficient has a corresponding layer index, a spatial domain index, a frequency domain index, and a Doppler domain index. In the embodiment of the present application, based on the cited Doppler domain index, one implementation method is to group the non-zero coefficients based on their Doppler domain index, and divide the non-zero coefficients whose corresponding Doppler domain index is a first value into a first group; another implementation method is to group the non-zero coefficients based on their priority level, and divide the priority group with a level higher than a preset level into a first group.

The first value is a Doppler domain index corresponding to the strongest coefficient, and the strongest coefficient may be determined by protocol agreement. Optionally, the first value is 0.

S230, mapping the first group to Group 1 of CSI Part 2, and mapping the second group to Group 2 of CSI Part 2, to obtain the coded data of the CSI to be reported;

Among them, the CSI that needs to be reported may include CSI Part 1 and CSI Part 2, and CSI Part 2 includes Group 0, Group 1 and Group 2. When the CSI overhead to be reported exceeds the uplink resources allocated by the base station, the terminal usually first discards Group 2 of CSI Part 2, and CSI Part 2 only reports the remaining Group 0 and Group 1. In order to avoid the terminal discarding Group 2 of CSI Part 2 and affecting the system performance, in an embodiment of the present application, the non-zero coefficient with a Doppler domain index of the first value is the first group, and/or, the priority group level higher than the preset level is divided into the first group, so that the first group is mapped to Group 1 of CSI Part 2 to avoid being discarded and affecting the system performance.

S240: Send the CSI to be reported to the network device according to the encoded data.

By adopting the CSI reporting method described in the embodiment of the present application, by grouping non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index of the first value are grouped as the first group and mapped to Group1 of CSI Part2, and/or the non-zero coefficients with a priority level higher than a preset level are grouped as the first group and mapped to Group1 of CSI Part2. In this way, the non-zero coefficients are grouped according to the Doppler domain index and/or the priority level, and the important data of the CSI to be reported is mapped to Group1 of CSI Part2. When CSI is discarded, the system performance will not be affected by discarding Group2 of CSI Part2.

By adopting the CSI reporting method described in the embodiment of the present application, according to the Doppler domain index corresponding to the non-zero coefficient and/or the priority level corresponding to the non-zero coefficient, a part of the non-zero coefficient is mapped to Group 1 of the second part of the CSI CSI Part 2, and another part of the non-zero coefficient is mapped to Group 2 of the CSI Part 2, so that the non-zero coefficient corresponding to the Doppler domain index of the first value is mapped to Group 1 of the CSI Part 2, and/or the non-zero coefficient with a priority level higher than a preset level is mapped to Group 1 of the CSI Part 2.

The CSI reporting method described in the embodiments of the present application may, optionally, in one implementation manner, group the non-zero coefficients according to the Doppler domain index corresponding to the non-zero coefficients in the CSI to be reported when encoding the CSI to be reported, so that the non-zero coefficients corresponding to the Doppler index based on the strongest coefficient in the CSI to be reported can be mapped to Group 1 of CSI Part 2.

In the embodiment of the present application, in step S220, determining that the non-zero coefficients other than the first group are the second group includes:

Determine, among the non-zero coefficients, that the non-zero coefficients corresponding to the Doppler domain index of the second value are the second group;

The second value is different from the first value.

Optionally, the first value of the Doppler domain index is 0, and the second value of the Doppler domain index is 1, wherein the Doppler domain index 0 is the Doppler domain index corresponding to the strongest coefficient.

According to the above, in this implementation, according to the Doppler domain index corresponding to the non-zero coefficient, one part of the non-zero coefficient is mapped to Group 1 of the second part of CSI CSI Part 2, and another part of the non-zero coefficient is mapped to Group 2 of CSI Part 2, including:

The non-zero coefficient corresponding to the Doppler domain index having a first value is mapped to Group 1 of the CSI Part 2; and the non-zero coefficient corresponding to the Doppler domain index having a second value is mapped to Group 2 of the CSI Part 2.

By adopting this implementation mode, when coding the CSI to be reported, the non-zero coefficients are divided into two groups according to the Doppler domain index corresponding to the non-zero coefficients of the CSI to be reported, the first group includes the non-zero coefficients corresponding to the Doppler domain index of 0, the second group includes the non-zero coefficients corresponding to the Doppler domain index of 1, the first group is mapped to Group 1 of CSI Part 2, and the second group is mapped to Group 2 of CSI Part 2.

Specifically, the index information of the non-zero coefficients includes a layer index l, a spatial domain index i, a frequency domain index f, and a Doppler domain index d;

Wherein, l＝1,2,…,v; i＝0,1,…,2L-1, f＝0,1,…,M _v -1, d＝0,…,Q-1;

v is the number of layers of the CSI to be reported, L is the number of reported spatial basis vectors reported in the CSI to be reported, M _v is the number of reported frequency domain basis vectors reported in the CSI to be reported, and Q is the number of reported Doppler domain basis vectors in the CSI to be reported.

In the embodiment of the present application, in the non-zero coefficients of the first group whose Doppler domain index d is 0, the corresponding layer index l includes each layer number of the CSI to be reported, the corresponding spatial domain index i includes each value from 0 to 2L-1 mentioned above, and the corresponding frequency domain index f includes each value from 0 to M _v -1 mentioned above.

Similarly, in the non-zero coefficients of the second group with Doppler domain index d being 1, the corresponding layer index l includes each layer number of CSI to be reported, the corresponding spatial domain index i includes each value from 0 to 2L-1, and the corresponding frequency domain index f includes each value from 0 to _Mv -1.

In the embodiment of the present application, optionally, in the implementation mode, when determining that the non-zero coefficients corresponding to the Doppler domain index of the first value are the first group, the method further includes:

The number of the non-zero coefficients in the first group is mapped to a target field in the CSI Part 1.

That is, the number of non-zero coefficients in Group 1 mapped to the CSI Part 2 is mapped to the target field in the CSI Part 1.

Specifically, the target field may be a newly added field in the coded data of the CSI to be reported, which is used to indicate the number of the non-zero coefficients in Group 1 of CSI Part 2.

By adopting this implementation, by mapping the number of non-zero coefficients in Group 1 of CSI Part 2 to the target field in the first part of CSI CSI Part 1, the network device receiving CSI can determine the actual data size of the non-zero coefficients reported in Group 1 of CSI Part 2 according to the target field in CSI Part 1, and obtain the accurate data of the non-zero coefficients in Group 1 of CSI Part 2, so as to successfully decode CSI Part 2.

In the embodiment of the present application, optionally, the method further includes:

The bit width B _W of the target field is determined according to at least one of the following methods:

When the maximum number of layers of CSI to be reported is 1, determine

When the maximum number of layers of CSI to be reported is not 1, determine

Wherein, K ₀ =β2LM ₁ Q; L is the number of spatial domain basis vectors in the CSI to be reported, M ₁ is the number of time-frequency domain basis vectors with a maximum layer number of 1, Q is the number of Doppler domain basis vectors in the CSI to be reported; β is a preset coefficient.

In another embodiment, optionally, the method further includes:

The Doppler domain basis vector indication information in the CSI to be reported is mapped to Group 2 of CSI Part 2.

In another implementation manner of the CSI reporting method described in the embodiment of the present application, in step S220, according to the priority level corresponding to the non-zero coefficient, a part of the non-zero coefficient is mapped to Group 1 of the CSI second part CSI Part 2, and another part of the non-zero coefficient is mapped to Group 2 of CSI Part 2.

Specifically, among the non-zero coefficients, the non-zero coefficients having a priority level higher than a preset level are determined as the first group, and the first group is mapped to Group 1 of the second part of CSI CSI Part 2; among the non-zero coefficients, the non-zero coefficients other than the first group are determined as the second group, and the second group is mapped to Group 2 of CSI Part 2.

Optionally, determining that among the non-zero coefficients, the non-zero coefficients having a priority level higher than a preset level are a first group, and that among the non-zero coefficients, the non-zero coefficients other than the first group are a second group, comprises:

According to the order of priority levels of the plurality of non-zero coefficients from low to high, determining that the non-zero coefficients corresponding to the priority levels arranged in the first N positions are the second group, and determining that the non-zero coefficients corresponding to the priority levels arranged in the M positions after the first N positions are the first group;

Wherein, M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the Nth bit.

By adopting this implementation mode, when coding the CSI to be reported, the non-zero coefficients of the CSI to be reported are grouped according to the order of priority levels of the multiple non-zero coefficients from low to high and the total number of CSI to be reported, so that among the non-zero coefficients of the CSI to be reported, the non-zero coefficients higher than the preset level are mapped to Group 1 of CSI Part 2, and the other part of the non-zero coefficients are mapped to Group 2 of CSI Part 2, so as to ensure that the non-zero coefficients with higher priority levels are mapped to Group 1 of CSI Part 2.

Specifically, the non-zero coefficients of the CSI to be reported include the amplitude of the non-zero coefficients, the phase of the non-zero coefficients, and the position information of the non-zero coefficients.

When the non-zero coefficients are grouped using the CSI reporting method described in the embodiment of the present application, a different grouping method is used for the amplitude and phase in the non-zero coefficients compared to the position information in the non-zero coefficients, that is, when grouping is performed in order of priority from low to high, the method for determining the preset levels of the two parts respectively mapped to Group 1 of CSI Part 2 and Group 2 of CSI Part 2 is different.

In addition, in the embodiment of the present application, optionally, the method further includes:

Determining a priority value of each non-zero coefficient according to a Doppler domain index, a layer index, a spatial domain index, and a frequency domain index corresponding to the non-zero coefficient;

Determining the priority level of the corresponding non-zero coefficient according to the priority value of each non-zero coefficient;

The priority values are arranged from large to small, and the corresponding priority levels vary from low to high.

Determining the priority value of each non-zero coefficient according to the Doppler domain index, the layer index, the spatial domain index, and the frequency domain index corresponding to the non-zero coefficient includes one of the following:

Determine the priority value of each of the non-zero coefficients according to the order of priority of the layer index, the spatial domain index, the frequency domain index, and the Doppler domain index from high to low;

Determine the priority value of each of the non-zero coefficients according to the order of priority of the layer index, the spatial domain index, the Doppler domain index, and the frequency domain index from high to low;

The priority value of each non-zero coefficient is determined according to the order of priority of the layer index, the Doppler domain index, the spatial domain index and the frequency domain index from high to low.

Optionally, determining the priority value of each non-zero coefficient according to the order of priority of the layer index, the spatial domain index, the frequency domain index, and the Doppler domain index from high to low includes:

The priority value Pri(l,i,f,d) of each non-zero coefficient is determined according to the following formula 1:

Formula 1: Pri(l,i,f,d)＝2LvN ₃ d+2Lvπ(f)+vi+l;

and/or

Determining the priority value of each non-zero coefficient according to the order of priority of the layer index, the spatial domain index, the Doppler domain index, and the frequency domain index from high to low, including:

According to the following formula 2, the priority value Pri(l,i,d,f) of each non-zero coefficient is determined:

Formula 2: Pri(l,i,d,f)=2LvQπ(f)+2Lvd+vi+l;

and/or

Determining the priority value of each non-zero coefficient according to the order of priority of the layer index, the Doppler domain index, the spatial domain index, and the frequency domain index from high to low, including:

According to the following formula 3, the priority value Pri(l, d, i, f) of each non-zero coefficient is determined:

Formula 3: Pri(l,d,i,f)＝2LvQπ(f)+vQi+vd+l;

Wherein, l is the layer index, and l=1,2,…,v; i is the spatial domain index, and i=0,1,…,2L-1; f is the frequency domain index, and f=0,1,…,M _v -1; d is the Doppler domain index, and d=0,1,…,Q-1;

v is the number of layers of the CSI to be reported; L is the number of spatial domain basis vectors in the CSI to be reported; M _v is the number of frequency domain basis vectors in the CSI to be reported; Q is the number of Doppler domain basis vectors in the CSI to be reported; N ₃ is the total number of frequency domain basis vectors; π(f) is the permutation function of the frequency domain index f.

In one embodiment of the present application, when determining the amplitude, phase or position information of the non-zero coefficient in the non-zero coefficient, the priority value of each non-zero coefficient is defined in the descending order of the priority of the layer index, the spatial domain index, the frequency domain index and the Doppler domain index according to Formula 1. The smaller the priority value, the higher the corresponding priority level.

On this basis, the priority values of the amplitude, phase and position information in the non-zero coefficients are arranged from high to low, and the priority order of the amplitude, phase and position information in the non-zero coefficients is obtained from low to high. According to the order of priority from low to high and the total number of non-zero coefficients, the amplitude, phase and position information in the non-zero coefficients are grouped respectively.

Similarly, in another implementation mode, the priority value of each non-zero coefficient may be defined according to Formula 2, in which the layer index, spatial domain index, Doppler domain index and frequency domain index are arranged in order from high to low priority; or, the priority value of each non-zero coefficient may be defined according to Formula 3, in which the layer index, Doppler domain index, spatial domain index and frequency domain index are arranged in order from high to low priority.

It should be noted that, by adopting the CSI reporting method described in the embodiment of the present application, the influence of the layer index, Doppler domain index, spatial domain index and frequency domain index on the priority value can be calculated respectively through a pre-set calculation method to determine the arrangement order of the layer index, Doppler domain index, spatial domain index and frequency domain index when calculating the priority group value of the non-zero coefficient.

In one embodiment of the present application, the non-zero coefficients include amplitude coefficients and/or phase coefficients;

The method further comprises: determining N and M in the following manner:

Among them, K ^NZ is the total number of the non-zero coefficients in the CSI to be reported; v is the number of layers of the CSI to be reported.

in, The first half of the amplitude coefficients and/or phase coefficients corresponding to the non-zero coefficients are divided into the first half and the second half of the amplitude coefficients and/or phase coefficients corresponding to the non-zero coefficients. The amplitude coefficients and/or phase coefficients corresponding to the non-zero coefficients of the low priority level are the second group, mapped to Group2 of CSI Part2. Considering that the non-zero coefficients of the strongest coefficients in each layer do not need to be reported, the second half Among the high priority levels, The amplitude coefficients and/or phase coefficients corresponding to the priority levels are grouped as the first group and mapped to Group 1 of CSI Part 2.

In another implementation of the embodiment of the present application, the non-zero coefficient includes position indication information of the non-zero coefficient;

The method further comprises: determining N and M in the following manner:

Among them, K ^NZ is the total number of non-zero coefficients in the CSI to be reported; v is the number of layers of the CSI to be reported; L is the number of spatial domain basis vectors in the CSI to be reported, _MV is the number of frequency domain basis vectors in the CSI to be reported, and Q is the number of Doppler domain basis vectors in the CSI to be reported.

In this implementation, when the position indication information corresponding to the non-zero coefficients is grouped, according to the total number of non-zero coefficients and the order of priority of the amplitude coefficients and/or phase coefficients from low to high (or the order of priority of the amplitude coefficients and/or phase coefficients from high to low), the first half The position indication information corresponding to the non-zero coefficients of the low priority level is the second group, which is mapped to Group2 of CSI Part2, so that the number of bits of the position indication information of the non-zero coefficients in Group2 of CSI Part2 is equal to the number of non-zero coefficients in the group. In addition, The position indication information of the non-zero coefficients with high priority is the first group and is mapped to Group 1 of CSI Part 2.

Optionally, the CSI reporting method described in the embodiment of the present application is adopted, and the method further includes:

The Doppler domain basis vector indication information in the CSI to be reported is mapped to Group 1 of CSI Part 2.

By adopting this implementation mode, the non-zero coefficients are grouped according to the priority level, and the priority value of the non-zero coefficient is determined according to the layer index, spatial domain index, Doppler domain index and frequency domain index. A grouping method based on the Doppler domain index is introduced, and it is ensured that the important data of the CSI to be reported is mapped to Group 1 of CSI Part 2. When CSI is discarded, the accurate reception of the reported data will not be affected by the discarding of Group 2 of CSI Part 2, so that the data can be reported normally and the system performance is guaranteed.

In the embodiment of the present application, optionally, in step S130, sending the CSI to be reported to the network device according to the coded data includes:

When the amount of uplink channel resources allocated by the network device is less than the amount of resources required by the coded data, discard Group 2 of the CSI Part 2 to obtain the reporting data of the CSI to be reported;

The reported data is sent to the network device.

In the embodiment of the present application, after receiving the CSI reported by the terminal, the network device can determine whether the data in Group 2 of CSI Part 2 of the CSI is discarded according to the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part 1 of the CSI.

In one implementation mode, when the terminal maps the non-zero coefficient corresponding to the Doppler domain index of 0 to Group 1 of the CSI Part 2 according to the Doppler domain index corresponding to the non-zero coefficient; and maps the non-zero coefficient corresponding to the Doppler domain index of 1 to Group 2 of the CSI Part 2, after the network device receives the CSI reported by the terminal, when it is determined that the data in Group 2 of CSI Part 2 of the CSI is discarded based on the amount of uplink channel resources allocated to the terminal and the first part CSI of the CSI CSIPart1, the actual data size of Group 1 of the CSI Part 2 can be determined according to the number of the non-zero coefficients in Group 1 of the CSI Part 2 recorded in the CSI Part 1.

Specifically, according to the value of the target field in CSI Part 1, the number of the non-zero coefficients in Group 1 of CSI Part 2 is determined to accurately obtain the actual data size of Group 1 of CSI Part 2, thereby ensuring accurate decoding of the received CSI.

In another embodiment, when the non-zero coefficients are grouped according to the order of their priority levels from low to high, after the network device receives the CSI reported by the terminal, when it is determined that the data in Group2 of CSI Part2 of CSI Part2 is discarded based on the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part1 of the CSI, the network device can determine the number of non-zero coefficients in Group1 of CSI Part2 according to the value of M, and determine the actual data size of Group1 of CSI Part2.

Specifically, according to the above-mentioned method of grouping the amplitude coefficients and/or phase coefficients of the non-zero coefficients, the number M of non-zero coefficients in Group1 mapped to CSI Part2 can be determined according to the total number of non-zero coefficients recorded in CSI Part1, thereby calculating the actual data size of Group1 of the CSI Part2; similarly, according to the above-mentioned method of grouping the position indication information of the non-zero coefficients, and according to the total number of non-zero coefficients recorded in CSI Part1, the number of spatial domain basis vectors reported in the CSI to be reported, the number of layers of the CSI to be reported, the number of frequency domain basis vectors reported in the CSI to be reported, the number of Doppler domain basis vectors reported in the CSI to be reported, etc., the number M of non-zero coefficients in Group1 mapped to CSI Part2 can be determined, thereby calculating the actual data size of Group1 of the CSI Part2.

The CSI reporting method described in the embodiment of the present application is described in detail below in conjunction with a specific implementation manner.

Implementation Method 1

In the first embodiment, the non-zero coefficients whose corresponding Doppler domain index is the first value are determined to be the first group; the non-zero coefficients whose corresponding Doppler domain index is the second value are determined to be the second group; using this grouping method, the first group is mapped to Group 1 of the second part of CSI CSI Part 2, and the second group is mapped to Group 2 of CSI Part 2.

For example, the terminal obtains non-zero coefficients of CSI to be reported, wherein the amplitude coefficient is represented by i _2,4,l , the phase coefficient is represented by i _2,5,l , and the position indication information of the non-zero coefficient is represented by i _1,7,l ; correspondingly, the Doppler domain index is d.

in,

i _2,5,l = [c _l,0 ,c _l,1 ], c _l,f,d =[c _l,0,f,d …c _l,2L-1,f,d ], c _l,i,f,d ∈{0,…,15}.

Wherein, l=1, 2, ..., υ, v is the number of layers of the CSI to be reported;

i=0, 1, ..., 2L-1, L is the number of spatial basis vectors in the CSI to be reported;

f＝0,1,…,M _v -1, M _V is the number of frequency domain basis vectors in the CSI to be reported;

d＝0,1.

When grouping according to the Doppler domain index corresponding to the non-zero coefficient, the non-zero coefficient corresponding to the Doppler domain index d=0 is mapped to Group1 of CSI Part2, and the non-zero coefficient corresponding to the Doppler domain index d=1 is mapped to Group2 of CSI Part2.

According to the grouping method, in this implementation, the non-zero coefficients in Group 1 of CSI Part 2 and Group 2 of CSI Part 2 are shown in Table 1 below:

Table 1

Among them, in this implementation, since the amount of uplink channel resources allocated by the network device is less than the amount of resources required for the encoded data, the terminal will discard Group2 of the CSI Part2. Therefore, when the Doppler domain index d is 1, the amplitude coefficient and phase coefficient corresponding to the non-zero coefficient may be discarded. If the amplitude coefficient and phase coefficient of the corresponding non-zero coefficient are discarded when d is 1, other parameters with d being 1 will be useless. Therefore, the Doppler domain basis vector indication information can be mapped to Group2 of CSI Part2.

In one implementation mode, optionally, the terminal determines the total number K _G1 of coefficients corresponding to d=0 reported in the amplitude coefficient i _2,4,1 or the phase coefficient i _2,5,1 , and fills the total number K _G1 into the corresponding field of CSI Part 1. The fields and bit widths filled in CSI Part 1 are shown in Table 2 below:

Table 2

Based on the above-mentioned way of grouping non-zero coefficients, when the uplink channel resources allocated by the base station are insufficient to carry all CSI, the terminal first discards Group 2 of CSI Part 2 and only reports the remaining CSI.

The network device can determine whether the CSI reported by the terminal has been discarded according to the CSI Part 1 reported by the terminal and the uplink channel resources allocated by the base station.

If the network device determines that the received CSI is not discarded, the network device determines the size of CSI Part2 reported by the terminal according to the Rank Indicator and K ^NZ in CSI Part1. If the network device determines that the CSI is discarded, the size of CSI Part2 reported by the terminal is determined according to the Rank Indicator, K ^NZ and K _G1 in CSI Part1, and the actual data size of Group1 of CSI Part2 is determined according to the number of non-zero coefficients in Group1 of CSI Part2 recorded in CSI Part1, so as to correctly decode the received CSI.

Implementation Method 2

In the second embodiment, according to the priority levels corresponding to the non-zero coefficients, the non-zero coefficients with a priority level higher than a preset level are determined as the first group, and the non-zero coefficients other than the first group are determined as the second group; using this grouping method, the first group is mapped to Group1 of the second part of CSI CSI Part2, and the second group is mapped to Group2 of CSI Part2.

For example, the terminal obtains non-zero coefficients of CSI to be reported, wherein the amplitude coefficient is represented by i _2,4,l , the phase coefficient is represented by i _2,5,l , and the position indication information of the non-zero coefficient is represented by i _1,7,l ; correspondingly, the Doppler domain index is d.

in,

i _2,5,l ＝[c _l,0 ,c _l,1 ], c _l,f,d =[c _l,0,f,d …c _l,2L-1,f,d ], c _l,i,f,d ∈{0,…,15}.

Wherein, l=1, 2, ..., υ, v is the number of layers of the CSI to be reported;

i=0, 1, ..., 2L-1, L is the number of spatial basis vectors reported in the CSI to be reported;

f=0, 1, ..., M _v -1, M _V is the number of frequency domain basis vectors reported in the CSI to be reported;

d＝0,1.

In this implementation, optionally, the terminal side defines the priority of the amplitude coefficient, phase coefficient and position indication information of the non-zero coefficient according to the order of priority of the layer index, spatial domain index, frequency domain index and Doppler domain index from high to low. The priority value calculation formula is as follows, the smaller the value, the higher the priority:

Pri(l,i,f,d)=2LvN _3d +2Lvπ(f)+vi+l.

By adopting this implementation mode, the non-zero coefficients to be reported in CSI are grouped according to the order of priority of the multiple non-zero coefficients from low to high. Specifically, the terminal maps the position indication information of the non-zero coefficient, the reported amplitude coefficient and the phase coefficient to Group 1 and Group 2 of CSI Part 2, and maps the Doppler domain basis vector indication to Group 1 of CSI Part 2 according to the following Table 3.

Table 3

Based on the above-mentioned way of grouping non-zero coefficients, when the uplink channel resources allocated by the base station are insufficient to carry all CSI, the terminal first discards Group 2 of CSI Part 2 and only reports the remaining CSI.

The network device can determine whether the CSI reported by the terminal has been discarded according to the CSI Part 1 reported by the terminal and the uplink channel resources allocated by the base station.

If the network device determines that the received CSI is not discarded, the network device determines the size of CSI Part2 reported by the terminal according to the Rank Indicator and K ^NZ in CSI Part1. If the network device determines that the CSI is discarded, the size of CSI Part2 reported by the terminal is determined according to the Rank Indicator and K ^NZ in CSI Part1; and the number M of non-zero coefficients in Group1 mapped to CSI Part2 can be determined according to the total number of non-zero coefficients recorded in CSI Part1, the number of spatial domain basis vectors in the CSI to be reported, the number of layers of CSI to be reported, the number of frequency domain basis vectors in the CSI to be reported, the number of Doppler domain basis vectors in the CSI to be reported, etc., so as to calculate the actual data size of Group1 of the CSI Part2, and determine the actual data size of Group1 of the CSI Part2, so as to achieve correct decoding of the network device.

Implementation Method 3

In the third embodiment, according to the priority levels corresponding to the non-zero coefficients, the non-zero coefficients with a priority level higher than a preset level are determined as the first group, and the non-zero coefficients other than the first group are determined as the second group; using this grouping method, the first group is mapped to Group1 of the second part of CSI CSI Part2, and the second group is mapped to Group2 of CSI Part2.

For example, the terminal obtains non-zero coefficients of CSI to be reported, wherein the amplitude coefficient is represented by i _2,4,l , the phase coefficient is represented by i _2,5,l , and the position indication information of the non-zero coefficient is represented by i _1,7,l ; correspondingly, the Doppler domain index is d.

in,

i _2,5,l ＝[c _l,0 ,c _l,1 ], c _l,f,d =[c _l,0,f,d …c _l,2L-1,f,d ], c _l,i,f,d ∈{0,…,15}.

Wherein, l=1, 2, ..., υ, v is the number of layers of the CSI to be reported;

i=0, 1, ..., 2L-1, L is the number of spatial basis vectors reported in the CSI to be reported;

f＝0,1,…,M _υ -1, M _V is the number of frequency domain basis vectors reported in the CSI to be reported; d＝0,1.

In this implementation, optionally, the terminal side defines the priority of the amplitude coefficient, phase coefficient and position indication information of the non-zero coefficient according to the order of priority of the layer index, spatial domain index, Doppler domain index and frequency domain index from high to low. The priority value calculation formula is as follows, the smaller the value, the higher the priority:

Pri(l,i,d,f)=2LvN _4π (f)+2Lvd+vi+l.

By adopting this implementation mode, the non-zero coefficients to be reported in CSI are grouped according to the order of priority of the multiple non-zero coefficients from low to high. Specifically, the terminal maps the position indication information of the non-zero coefficient, the reported amplitude coefficient and the phase coefficient to Group 1 and Group 2 of CSI Part 2, and maps the Doppler domain basis vector indication to Group 1 of CSI Part 2 according to the following Table 4.

Table 4

Based on the above-mentioned way of grouping non-zero coefficients, when the uplink channel resources allocated by the base station are insufficient to carry all CSI, the terminal first discards Group 2 of CSI Part 2 and only reports the remaining CSI.

The network device can determine whether the CSI reported by the terminal has been discarded according to the CSI Part 1 reported by the terminal and the uplink channel resources allocated by the base station.

If the network device determines that the received CSI is not discarded, the network device determines the size of CSI Part2 reported by the terminal according to the Rank Indicator and K ^NZ in CSI Part1. If the network device determines that the CSI is discarded, the size of CSI Part2 reported by the terminal is determined according to the Rank Indicator and K ^NZ in CSI Part1; and the number M of non-zero coefficients in Group1 mapped to CSI Part2 can be determined according to the total number of non-zero coefficients recorded in CSI Part1, the number of spatial domain basis vectors in the CSI to be reported, the number of layers of CSI to be reported, the number of frequency domain basis vectors in the CSI to be reported, the number of Doppler domain basis vectors in the CSI to be reported, etc., so as to calculate the actual data size of Group1 of the CSI Part2, and determine the actual data size of Group1 of the CSI Part2, so as to achieve correct decoding of the network device.

Implementation Method 4

In the fourth embodiment, according to the priority levels corresponding to the non-zero coefficients, the non-zero coefficients with a priority level higher than a preset level are determined as the first group, and the non-zero coefficients other than the first group are determined as the second group; using this grouping method, the first group is mapped to Group1 of the second part of CSI CSI Part2, and the second group is mapped to Group2 of CSI Part2.

For example, the terminal obtains non-zero coefficients of CSI to be reported, wherein the amplitude coefficient is represented by i _2,4,l , the phase coefficient is represented by i _2,5,l , and the position indication information of the non-zero coefficient is represented by i _1,7,l ; correspondingly, the Doppler domain index is d.

in,

i _2,5,l ＝[c _l,0 ,c _l,1 ], c _l,f,d =[c _l,0,f,d …c _l,2L-1,f,d ], c _l,i,f,d ∈{0,…,15}.

Wherein, l=1, 2, ..., υ, v is the number of layers of the CSI to be reported;

i=0, 1, ..., 2L-1, L is the number of spatial basis vectors in the CSI to be reported;

f=0,1,…,M _υ -1, M _V is the number of frequency domain basis vectors in the CSI to be reported;

d＝0,1.

In this implementation, optionally, the terminal side defines the priority of the amplitude coefficient, phase coefficient and position indication information of the non-zero coefficient according to the order of priority of the layer index, Doppler domain index, spatial domain index and frequency domain index from high to low. The priority value calculation formula is as follows, the smaller the value, the higher the priority:

Pri(l,d,i,f)=2LvN _4π (f)+vN ₄ i+vd+l.

By adopting this implementation mode, the non-zero coefficients to be reported in CSI are grouped according to the order of priority of the multiple non-zero coefficients from low to high. Specifically, the terminal maps the position indication information of the non-zero coefficient, the reported amplitude coefficient and the phase coefficient to Group 1 and Group 2 of CSI Part 2, and maps the Doppler domain basis vector indication to Group 1 of CSI Part 2 according to the following Table 5.

Table 5

Based on the above-mentioned way of grouping non-zero coefficients, when the uplink channel resources allocated by the base station are insufficient to carry all CSI, the terminal first discards Group 2 of CSI Part 2 and only reports the remaining CSI.

The network device can determine whether the CSI reported by the terminal has been discarded according to the CSI Part 1 reported by the terminal and the uplink channel resources allocated by the base station.

If the network device determines that the received CSI is not discarded, the network device determines the size of CSI Part2 reported by the terminal according to the Rank Indicator and K ^NZ in CSI Part1. If the network device determines that the CSI is discarded, the size of CSI Part2 reported by the terminal is determined according to the Rank Indicator and K ^NZ in CSI Part1; and the number M of non-zero coefficients in Group1 mapped to CSI Part2 can be determined according to the total number of non-zero coefficients recorded in CSI Part1, the number of spatial domain basis vectors in the CSI to be reported, the number of layers of CSI to be reported, the number of frequency domain basis vectors in the CSI to be reported, the number of Doppler domain basis vectors in the CSI to be reported, etc., so as to calculate the actual data size of Group1 of the CSI Part2, and determine the actual data size of Group1 of the CSI Part2, so as to achieve correct decoding of the network device.

One embodiment of the present application further provides a channel state information CSI reporting method, which is performed by a network device, as shown in FIG3 , and includes:

S310, receiving CSI reported by the terminal;

The non-zero coefficients in Group1 of the second part CSI Part2 of the CSI are the first group;

The Doppler domain index corresponding to the non-zero coefficient in the first group is a first value; and/or the priority level of the non-zero coefficient in the first group is higher than a preset level;

The first value is the Doppler domain index corresponding to the strongest coefficient.

By adopting the CSI reporting method described in the embodiment of the present application, in the CSI received by the network device, the non-zero coefficient corresponding to the Doppler domain index of the first value is the first group, mapped to Group 1 of CSI Part 2, and/or the non-zero coefficient with a priority level higher than the preset level is the first group, mapped to Group 1 of CSI Part 2. In this way, the non-zero coefficient of the Doppler domain index corresponding to the strongest coefficient is mapped to Group 1 of CSI Part 2, and/or the non-zero coefficient higher than the preset level is mapped to Group 1 of CSI Part 2, that is, the important data in the CSI is transmitted through Group 1 of CSI Part 2, and the system performance will not be affected by the terminal discarding Group 2 of CSI Part 2.

In an embodiment of the present application, optionally, in the CSI reporting method, the non-zero coefficients in Group2 of the second part CSIPart2 of the CSI are a second group, and the second group includes the non-zero coefficients of the CSI except the first group.

Optionally, in the CSI reporting method, the Doppler domain index corresponding to the non-zero coefficient in the second group is a second value; and the second value is different from the first value.

Optionally, in the CSI reporting method, when the priority level of the non-zero coefficient in the first group is higher than a preset level, the method further includes:

According to the order of priority levels of the plurality of non-zero coefficients from low to high, determining that the non-zero coefficients corresponding to the priority levels arranged in the first N bits are the second group, and the non-zero coefficients corresponding to the priority levels arranged in M bits after the first N bits are the first group;

Wherein, M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the Nth bit.

Optionally, in the CSI reporting method, when the Doppler domain index corresponding to the non-zero coefficient in the first group is a first value, the method further includes:

The number of the non-zero coefficients in Group 1 of the CSI Part 2 is determined according to a target field in a CSI Part 1 of the CSI.

Optionally, in the CSI reporting method, when the Doppler domain index corresponding to the non-zero coefficient in the first group is a first value, the method further includes:

According to Group 2 of CSI Part 2 of the CSI, Doppler domain basis vector indication information in the CSI is determined.

Optionally, the CSI reporting method further includes:

The bit width B _W of the target field is determined according to at least one of the following methods:

When the maximum number of layers of the CSI is 1, determine

When the maximum number of layers of the CSI is not 1, determine

Wherein, K ₀ =β2LM ₁ Q; L is the number of spatial domain basis vectors in the CSI, M ₁ is the number of time-frequency domain basis vectors with a maximum layer number of 1, Q is the number of Doppler domain basis vectors in the CSI; β is a preset coefficient.

Optionally, in the CSI reporting method, the non-zero coefficient includes an amplitude coefficient and/or a phase coefficient;

in,

Among them, K ^NZ is the total number of the non-zero coefficients in the CSI; v is the number of layers of the CSI.

Optionally, in the CSI reporting method, the non-zero coefficient includes position indication information;

in,

Among them, K ^NZ is the total number of non-zero coefficients in the CSI; v is the number of layers of the CSI; L is the number of spatial domain basis vectors in the CSI, _MV is the number of reported frequency domain basis vectors in the CSI, and Q is the number of Doppler domain basis vectors in the CSI.

Optionally, in the CSI reporting method, when, in the CSI, the priority level of the non-zero coefficients in the first group is higher than a preset level, the method further includes:

According to Group 1 of CSI Part 2 of the CSI, Doppler domain basis vector indication information in the CSI is determined.

Optionally, the CSI reporting method further includes:

According to the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part1 of the CSI, it is determined whether data in Group2 of CSI Part2 of the CSI is discarded.

Optionally, the CSI reporting method further includes:

When it is determined that data in Group 2 of CSI Part 2 of the CSI is discarded based on the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part 1 of the CSI, the actual data size of Group 1 of the CSI Part 2 is determined based on the number of non-zero coefficients in Group 1 of the CSI Part 2 recorded in the CSI Part 1.

Optionally, the CSI reporting method further includes:

When it is determined that data in Group 2 of CSI Part 2 of the CSI is discarded based on the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part 1 of the CSI, the number of non-zero coefficients in Group 1 of CSI Part 2 is determined based on the value of M, and the actual data size of Group 1 of the CSI Part 2 is determined.

The specific implementation of the CSI reporting method described in the embodiment of the present application applied to the network device can refer to the specific implementation applied to the terminal side, and will not be repeated here.

One embodiment of the present application further provides a terminal, as shown in FIG4 , including a memory 401, a transceiver 402, and a processor 403:

The memory 401 is used to store computer programs; the transceiver 402 is used to send and receive data under the control of the processor; the processor 403 is used to read the computer program in the memory and perform the following operations:

Obtain non-zero coefficients of the CSI to be reported;

Determine that among the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index of the first value are the first group, and/or the non-zero coefficients having a priority level higher than a preset level are the first group; and the non-zero coefficients among the non-zero coefficients except the first group are the second group; wherein the first value is the Doppler domain index corresponding to the strongest coefficient;

Mapping the first group to Group 1 of CSI Part 2, and mapping the second group to Group 2 of CSI Part 2, to obtain the coded data of the CSI to be reported;

The CSI to be reported is sent to the network device according to the encoded data.

Optionally, in the terminal, the processor 403 determines that the non-zero coefficients other than the first group are the second group, including:

Determine, among the non-zero coefficients, that the non-zero coefficients corresponding to the Doppler domain index of the second value are the second group;

The second value is different from the first value.

Optionally, in the terminal, the processor 403 determines that among the non-zero coefficients, the non-zero coefficients having a priority level higher than a preset level are a first group, and that among the non-zero coefficients, the non-zero coefficients other than the first group are a second group, including:

According to the order of priority levels of the plurality of non-zero coefficients from low to high, determining that the non-zero coefficients corresponding to the priority levels arranged in the first N positions are the second group, and determining that the non-zero coefficients corresponding to the priority levels arranged in the M positions after the first N positions are the first group;

Wherein, M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the Nth bit.

Optionally, in the terminal, the processor 403 is further configured to:

Determining a priority value of each non-zero coefficient according to a Doppler domain index, a layer index, a spatial domain index, and a frequency domain index corresponding to the non-zero coefficient;

Determining the priority level of the corresponding non-zero coefficient according to the priority value of each non-zero coefficient;

The priority values are arranged from large to small, and the corresponding priority levels vary from low to high.

Optionally, in the terminal, when determining that, in the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index having the first value are in the first group, the processor is further configured to:

The number of the non-zero coefficients in the first group is mapped to a target field in the CSI Part 1.

Optionally, in the terminal, when determining that, in the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index having the first value are in the first group, the processor 403 is further configured to:

The Doppler domain basis vector indication information in the CSI to be reported is mapped to Group 2 of CSI Part 2.

Optionally, in the terminal, the processor 403 is further configured to:

The bit width B _W of the target field is determined according to at least one of the following methods:

When the maximum number of layers of CSI to be reported is 1, determine

When the maximum number of layers of CSI to be reported is not 1, determine

Wherein, K ₀ =β2LM ₁ Q; L is the number of spatial domain basis vectors in the CSI to be reported, M ₁ is the number of time-frequency domain basis vectors with a maximum layer number of 1, Q is the number of Doppler domain basis vectors in the CSI to be reported; β is a preset coefficient.

Optionally, the terminal, wherein the non-zero coefficient includes an amplitude coefficient and/or a phase coefficient;

The processor 403 is further configured to determine N and M in the following manner:

Among them, K ^NZ is the total number of the non-zero coefficients in the CSI to be reported; v is the number of layers of the CSI to be reported.

Optionally, the terminal, wherein the non-zero coefficient includes position indication information;

The processor 403 is further configured to determine N and M in the following manner:

Among them, K ^NZ is the total number of non-zero coefficients in the CSI to be reported; v is the number of layers of the CSI to be reported; L is the number of spatial domain basis vectors in the CSI to be reported, _MV is the number of frequency domain basis vectors in the CSI to be reported, and Q is the number of Doppler domain basis vectors in the CSI to be reported.

Optionally, in the terminal, when determining that, among the non-zero coefficients, the non-zero coefficients having a priority level higher than a preset level are the first group, the processor 403 is further configured to:

The Doppler domain basis vector indication information in the CSI to be reported is mapped to Group 1 of CSI Part 2.

Optionally, in the terminal, the processor 403 determines the priority value of each non-zero coefficient according to the Doppler domain index, the layer index, the spatial domain index, and the frequency domain index corresponding to the non-zero coefficient, including:

According to the following formula 1, the priority value Pri(l,i,f,d) of each non-zero coefficient is determined according to the order of priority of the layer index, the spatial domain index, the frequency domain index and the Doppler domain index from high to low:

Formula 1: Pri(l,i,f,d)＝2LvN ₃ d+2Lvπ(f)+vi+l;

and/or

According to the following formula 2, the priority value Pri(l,i,d,f) of each non-zero coefficient is determined according to the order of priority of the layer index, the spatial domain index, the Doppler domain index and the frequency domain index from high to low:

Formula 2: Pri(l,i,d,f)=2LvQπ(f)+2Lvd+vi+l;

and/or

According to the following formula 3, the priority value Pri(l, d, i, f) of each non-zero coefficient is determined according to the order of priority of the layer index, Doppler domain index, spatial domain index and frequency domain index from high to low:

Formula 3: Pri(l,d,i,f)＝2LvQπ(f)+vQi+vd+l;

Wherein, l is the layer index, and l=1,2,…,v; i is the spatial domain index, and i=0,1,…,2L-1; f is the frequency domain index, and f=0,1,…,M _v -1; d is the Doppler domain index, and d=0,1,…,Q-1;

v is the number of layers of the CSI to be reported; L is the number of spatial domain basis vectors in the CSI to be reported; M _v is the number of frequency domain basis vectors in the CSI to be reported; Q is the number of Doppler domain basis vectors in the CSI to be reported; N ₃ is the total number of frequency domain basis vectors; π(f) is the permutation function of the frequency domain index f.

Optionally, in the terminal, the processor 403 sends the CSI to be reported to the network device according to the coded data, including:

When the amount of uplink channel resources allocated by the network device is less than the amount of resources required by the coded data, discard Group 2 of the CSI Part 2 to obtain the reporting data of the CSI to be reported;

The reported data is sent to the network device.

Among them, in Figure 4, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 403 and various circuits of memory represented by memory 401 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators and power management circuits together, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 402 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, and these transmission media include transmission media such as wireless channels, wired channels, and optical cables. For different user devices, the user interface 404 may also be an interface capable of externally connecting to required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 403 is responsible for managing the bus architecture and general processing, and the memory 401 can store data used by the processor 403 when performing operations.

Optionally, the processor 403 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

The embodiment of the present application further provides a network device, as shown in FIG5 , including a memory 501, a transceiver 502, and a processor 503:

The memory 501 is used to store computer programs; the transceiver 502 is used to send and receive data under the control of the processor; the processor 503 is used to read the computer program in the memory and perform the following operations:

Receive CSI reported by the terminal;

The non-zero coefficients in Group1 of the second part CSI Part2 of the CSI are the first group;

The Doppler domain index corresponding to the non-zero coefficient in the first group is a first value; and/or the priority level of the non-zero coefficient in the first group is higher than a preset level;

The first value is the Doppler domain index corresponding to the strongest coefficient.

Optionally, in the network device, the non-zero coefficients in Group2 of the second part CSI Part2 of the CSI are a second group, and the second group includes the non-zero coefficients of the CSI except the first group.

Optionally, in the network device, the Doppler domain index corresponding to the non-zero coefficient in the second group is a second value; and the second value is different from the first value.

Optionally, in the network device, when, in the CSI, the priority level of the non-zero coefficient in the first group is higher than a preset level, the processor 503 is further configured to:

According to the order of priority levels of the plurality of non-zero coefficients from low to high, determining that the non-zero coefficients corresponding to the priority levels arranged in the first N bits are the second group, and the non-zero coefficients corresponding to the priority levels arranged in M bits after the first N bits are the first group;

Wherein, M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the Nth bit.

Optionally, in the network device, when the Doppler domain index corresponding to the non-zero coefficient in the first group is a first value, the processor 503 is further configured to:

The number of the non-zero coefficients in Group 1 of the CSI Part 2 is determined according to a target field in a CSI Part 1 of the CSI.

Optionally, in the network device, when the Doppler domain index corresponding to the non-zero coefficient in the first group is a first value, the processor 503 is further configured to:

According to Group 2 of CSI Part 2 of the CSI, Doppler domain basis vector indication information in the CSI is determined.

Optionally, in the network device, the processor 503 is further configured to:

The bit width B _W of the target field is determined according to at least one of the following methods:

When the maximum number of layers of the CSI is 1, determine

When the maximum number of layers of the CSI is not 1, determine

Wherein, K ₀ =β2LM ₁ Q; L is the number of spatial domain basis vectors in the CSI, M ₁ is the number of time-frequency domain basis vectors with a maximum layer number of 1, Q is the number of Doppler domain basis vectors in the CSI; β is a preset coefficient.

Optionally, the network device, wherein the non-zero coefficient includes an amplitude coefficient and/or a phase coefficient;

in,

Among them, K ^NZ is the total number of the non-zero coefficients in the CSI; v is the number of layers of the CSI.

Optionally, the network device, wherein the non-zero coefficient includes position indication information;

in,

Among them, K ^NZ is the total number of non-zero coefficients in the CSI; v is the number of layers of the CSI; L is the number of spatial domain basis vectors in the CSI, _MV is the number of reported frequency domain basis vectors in the CSI, and Q is the number of Doppler domain basis vectors in the CSI.

Optionally, in the network device, when, in the CSI, the priority level of the non-zero coefficient in the first group is higher than a preset level, the processor 503 is further configured to:

According to Group 1 of CSI Part 2 of the CSI, Doppler domain basis vector indication information in the CSI is determined.

Optionally, in the network device, the processor 503 is further configured to:

According to the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part1 of the CSI, it is determined whether data in Group2 of CSI Part2 of the CSI is discarded.

Optionally, in the network device, the processor 503 is further configured to:

When it is determined that data in Group 2 of CSI Part 2 of the CSI is discarded based on the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part 1 of the CSI, the actual data size of Group 1 of the CSI Part 2 is determined based on the number of non-zero coefficients in Group 1 of the CSI Part 2 recorded in the CSI Part 1.

Optionally, in the network device, the processor 503 is further configured to:

When it is determined that data in Group 2 of CSI Part 2 of the CSI is discarded based on the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part 1 of the CSI, the number of non-zero coefficients in Group 1 of CSI Part 2 is determined based on the value of M, and the actual data size of Group 1 of the CSI Part 2 is determined.

In FIG. 5 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 503 and various circuits of memory represented by memory 501 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 502 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium includes a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 503 is responsible for managing the bus architecture and general processing, and the memory 501 may store data used by the processor 503 when performing operations.

The processor 503 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

One embodiment of the present application further provides a channel state information CSI reporting device, which is applied to a terminal. As shown in FIG6 , the device includes:

An acquisition module 601 is used to acquire non-zero coefficients of CSI to be reported;

The grouping module 602 is used to determine that among the non-zero coefficients, the non-zero coefficients corresponding to the Doppler domain index of the first value are the first group, and/or the non-zero coefficients with a priority level higher than a preset level are the first group; and the non-zero coefficients among the non-zero coefficients except the first group are the second group; wherein the first value is the Doppler domain index corresponding to the strongest coefficient;

A data mapping module 603 is used to map the first group to Group 1 of the second part of CSI CSI Part 2, and map the second group to Group 2 of CSI Part 2, to obtain the coded data of the CSI to be reported;

The sending module 604 is used to send the CSI to be reported to the network device according to the encoded data.

Optionally, in the CSI reporting device, the grouping module 602 determines that the non-zero coefficients other than the first grouping are the second grouping, including:

Determine, among the non-zero coefficients, that the non-zero coefficients corresponding to the Doppler domain index of the second value are the second group;

The second value is different from the first value.

Optionally, in the CSI reporting device, the grouping module 602 determines that among the non-zero coefficients, the non-zero coefficients having a priority level higher than a preset level are a first group, and the non-zero coefficients among the non-zero coefficients except the first group are a second group, including:

According to the order of priority levels of the plurality of non-zero coefficients from low to high, determine that the non-zero coefficients corresponding to the priority levels arranged in the first N positions are the second group, and determine that the non-zero coefficients corresponding to the priority levels arranged in the M positions after the first N positions are the first group;

Wherein, M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the Nth bit.

Optionally, in the CSI reporting device, the grouping module 602 is further configured to:

Determining a priority value of each non-zero coefficient according to a Doppler domain index, a layer index, a spatial domain index, and a frequency domain index corresponding to the non-zero coefficient;

Determining the priority level of the corresponding non-zero coefficient according to the priority value of each non-zero coefficient;

The priority values are arranged from large to small, and the corresponding priority levels vary from low to high.

Optionally, in the CSI reporting device, when determining that, in the non-zero coefficient, the non-zero coefficient corresponding to the Doppler domain index having the first value is a first group, the data mapping module 603 is further used to:

The number of the non-zero coefficients in the first group is mapped to a target field in the CSI Part 1.

Optionally, in the CSI reporting device, when determining that, in the non-zero coefficient, the non-zero coefficient corresponding to the Doppler domain index having the first value is a first group, the data mapping module 603 is further used to:

The Doppler domain basis vector indication information in the CSI to be reported is mapped to Group 2 of CSI Part 2.

Optionally, in the CSI reporting device, the data mapping module 603 is further used to:

The bit width B _W of the target field is determined according to at least one of the following methods:

When the maximum number of layers of CSI to be reported is 1, determine

When the maximum number of layers of CSI to be reported is not 1, determine

Wherein, K ₀ =β2LM ₁ Q; L is the number of spatial domain basis vectors in the CSI to be reported, M ₁ is the number of time-frequency domain basis vectors with a maximum layer number of 1, Q is the number of Doppler domain basis vectors in the CSI to be reported; β is a preset coefficient.

Optionally, in the CSI reporting device, the non-zero coefficient includes an amplitude coefficient and/or a phase coefficient;

The grouping module 602 is further used to determine N and M in the following manner:

Among them, K ^NZ is the total number of the non-zero coefficients in the CSI to be reported; v is the number of layers of the CSI to be reported.

Optionally, in the CSI reporting device, the non-zero coefficient includes position indication information;

The grouping module 602 is further used to determine N and M in the following manner:

Among them, K ^NZ is the total number of non-zero coefficients in the CSI to be reported; v is the number of layers of the CSI to be reported; L is the number of spatial domain basis vectors in the CSI to be reported, _MV is the number of frequency domain basis vectors in the CSI to be reported, and Q is the number of Doppler domain basis vectors in the CSI to be reported.

Optionally, in the CSI reporting device, when determining that, among the non-zero coefficients, the non-zero coefficients having a priority level higher than a preset level are in the first group, the data mapping module 603 is further configured to:

The Doppler domain basis vector indication information in the CSI to be reported is mapped to Group 1 of CSI Part 2.

Optionally, in the CSI reporting device, the grouping module 602 determines the priority value of each non-zero coefficient according to the Doppler domain index, layer index, spatial domain index and frequency domain index corresponding to the non-zero coefficient, including:

According to the following formula 1, the priority value Pri(l,i,f,d) of each non-zero coefficient is determined according to the order of priority of the layer index, the spatial domain index, the frequency domain index and the Doppler domain index from high to low:

Formula 1: Pri(l,i,f,d)＝2LvN ₃ d+2Lvπ(f)+vi+l;

and/or

According to the following formula 2, the priority value Pri(l,i,d,f) of each non-zero coefficient is determined according to the order of priority of the layer index, the spatial domain index, the Doppler domain index and the frequency domain index from high to low:

Formula 2: Pri(l,i,d,f)=2LvQπ(f)+2Lvd+vi+l;

and/or

According to the following formula 3, the priority value Pri(l, d, i, f) of each non-zero coefficient is determined according to the order of priority of the layer index, Doppler domain index, spatial domain index and frequency domain index from high to low:

Formula 3: Pri(l,d,i,f)＝2LvQπ(f)+vQi+vd+l;

Wherein, l is the layer index, and l=1,2,…,v; i is the spatial domain index, and i=0,1,…,2L-1; f is the frequency domain index, and f=0,1,…,M _v -1; d is the Doppler domain index, and d=0,1,…,Q-1;

v is the number of layers of the CSI to be reported; L is the number of spatial domain basis vectors in the CSI to be reported; M _v is the number of frequency domain basis vectors in the CSI to be reported; Q is the number of Doppler domain basis vectors in the CSI to be reported; N ₃ is the total number of frequency domain basis vectors; π(f) is the permutation function of the frequency domain index f.

Optionally, in the CSI reporting device, the sending module 604 sends the CSI to be reported to the network device according to the coded data, including:

When the amount of uplink channel resources allocated by the network device is less than the amount of resources required by the coded data, discard Group 2 of the CSI Part 2 to obtain the reporting data of the CSI to be reported;

The reported data is sent to the network device.

One embodiment of the present application further provides a channel state information CSI reporting device, which is applied to a network device. As shown in FIG7 , the device includes:

The receiving module 701 is used to receive the CSI reported by the terminal;

The non-zero coefficients in Group1 of the second part CSI Part2 of the CSI are the first group;

The Doppler domain index corresponding to the non-zero coefficient in the first group is a first value; and/or the priority level of the non-zero coefficient in the first group is higher than a preset level;

The first value is the Doppler domain index corresponding to the strongest coefficient.

Optionally, in the CSI reporting device, the non-zero coefficients in Group2 of the second part CSI Part2 of the CSI are a second group, and the second group includes the non-zero coefficients of the CSI except the first group.

Optionally, in the CSI reporting device, the Doppler domain index corresponding to the non-zero coefficient in the second group is a second value; and the second value is different from the first value.

Optionally, in the CSI reporting device, when, in the CSI, the priority level of the non-zero coefficient in the first group is higher than a preset level, the receiving module 701 is further configured to:

According to the order of priority levels of the plurality of non-zero coefficients from low to high, determining that the non-zero coefficients corresponding to the priority levels arranged in the first N bits are the second group, and the non-zero coefficients corresponding to the priority levels arranged in M bits after the first N bits are the first group;

Wherein, M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the Nth bit.

Optionally, in the CSI reporting device, when the Doppler domain index corresponding to the non-zero coefficient in the first group is a first value, the receiving module 701 is further used to:

The number of the non-zero coefficients in Group 1 of the CSI Part 2 is determined according to a target field in a CSI Part 1 of the CSI.

Optionally, in the CSI reporting device, when the Doppler domain index corresponding to the non-zero coefficient in the first group is a first value, the receiving module 701 is further used to:

According to Group 2 of CSI Part 2 of the CSI, Doppler domain basis vector indication information in the CSI is determined.

Optionally, in the CSI reporting device, the receiving module 701 is further used for:

The bit width B _W of the target field is determined according to at least one of the following methods:

When the maximum number of layers of the CSI is 1, determine

When the maximum number of layers of the CSI is not 1, determine

Wherein, K ₀ =β2LM ₁ Q; L is the number of spatial domain basis vectors in the CSI, M ₁ is the number of time-frequency domain basis vectors with a maximum layer number of 1, Q is the number of Doppler domain basis vectors in the CSI; β is a preset coefficient.

Optionally, in the CSI reporting device, the non-zero coefficient includes an amplitude coefficient and/or a phase coefficient;

in,

Among them, K ^NZ is the total number of the non-zero coefficients in the CSI; v is the number of layers of the CSI.

Optionally, in the CSI reporting device, the non-zero coefficient includes position indication information;

in,

Among them, K ^NZ is the total number of non-zero coefficients in the CSI; v is the number of layers of the CSI; L is the number of spatial domain basis vectors in the CSI, _MV is the number of reported frequency domain basis vectors in the CSI, and Q is the number of Doppler domain basis vectors in the CSI.

Optionally, in the CSI reporting device, when, in the CSI, the priority level of the non-zero coefficient in the first group is higher than a preset level, the receiving module 701 is further configured to:

According to Group 1 of CSI Part 2 of the CSI, Doppler domain basis vector indication information in the CSI is determined.

Optionally, in the CSI reporting device, the receiving module 701 is further used for:

According to the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part1 of the CSI, it is determined whether data in Group2 of CSI Part2 of the CSI is discarded.

Optionally, in the CSI reporting device, the receiving module 701 is further used for:

When it is determined that data in Group 2 of CSI Part 2 of the CSI is discarded based on the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part 1 of the CSI, the actual data size of Group 1 of the CSI Part 2 is determined based on the number of non-zero coefficients in Group 1 of the CSI Part 2 recorded in the CSI Part 1.

Optionally, in the CSI reporting device, the receiving module 701 is further used for:

When it is determined that data in Group 2 of CSI Part 2 of the CSI is discarded based on the amount of uplink channel resources allocated to the terminal and the CSI first part CSI Part 1 of the CSI, the number of non-zero coefficients in Group 1 of CSI Part 2 is determined based on the value of M, and the actual data size of Group 1 of the CSI Part 2 is determined.

It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

An embodiment of the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the CSI reporting method as described in any one of the above items.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

The present application is described with reference to the flowchart and/or block diagram of the method, device (system) and computer program product according to the embodiment of the present application. It should be understood that each process and/or box in the flowchart and/or block diagram, and the combination of the process and/or box in the flowchart and/or block diagram can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the function specified in one process or multiple processes in the flowchart and/or one box or multiple boxes in the block diagram.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (40)

1. A method for reporting channel state information CSI, performed by a terminal, the method comprising:

Acquiring a non-zero coefficient of the CSI to be reported;

Determining that the non-zero coefficient with the corresponding Doppler domain index as a first value is a first group, and/or determining that the non-zero coefficient with the priority level higher than a preset level is a first group; and the non-zero coefficients of the non-zero coefficients other than the first group are a second group; wherein the first value is a Doppler domain index corresponding to the strongest coefficient;

Mapping the first packet to Group1 of a second Part of CSI Part2 of the CSI, and mapping the second packet to Group2 of the CSI Part2 to obtain the coded data of the CSI to be reported;

And sending the CSI to be reported to the network equipment according to the coded data.

2. The CSI reporting method according to claim 1, wherein determining the non-zero coefficients of the non-zero coefficients other than the first packet as a second packet comprises:

determining that the non-zero coefficient with the corresponding Doppler domain index as a second value is the second group in the non-zero coefficients;

wherein the second value is different from the first value.

3. The CSI reporting method according to claim 1, wherein determining the non-zero coefficient having a priority level higher than a preset level among the non-zero coefficients is a first packet, and the non-zero coefficient other than the first packet among the non-zero coefficients is a second packet, comprises:

Determining the non-zero coefficient corresponding to the priority level arranged in the first N bits as the second group according to the arrangement sequence of the priority levels of the non-zero coefficients from low to high, and determining the non-zero coefficient corresponding to the priority level arranged in M bits after the first N bits as the first group;

wherein M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the nth bit.

4. A CSI reporting method according to claim 1 or 3, characterized in that the method further comprises:

determining a priority value of each non-zero coefficient according to the Doppler domain index, the layer index, the airspace index and the frequency domain index corresponding to the non-zero coefficient;

Determining the priority level of each non-zero coefficient according to the priority value of each non-zero coefficient;

wherein, the priority values are arranged from big to small, and the corresponding priority levels are changed from low to high.

5. The CSI reporting method according to claim 1 or 2, wherein in the case that the non-zero coefficient for which the corresponding doppler domain index is the first value is determined to be the first packet, the method further comprises:

Mapping the number of the non-zero coefficients in the first packet to a target field in CSI first Part CSI Part 1.

6. The CSI reporting method according to claim 1 or 2, wherein in the case that the non-zero coefficient for which the corresponding doppler domain index is the first value is determined to be the first packet, the method further comprises:

and mapping the Doppler domain base vector indication information in the CSI to be reported to Group2 of the CSI Part 2.

7. The CSI reporting method according to claim 5, further comprising:

the bit width B _W of the target field is determined according to at least one of the following ways:

In the case that the maximum layer number of the CSI to be reported is 1, determining

In the case that the maximum layer number of the CSI to be reported is not 1, determining

Wherein, K ₀＝β2LM₁ Q; l is the number of space domain base vectors in the CSI to be reported, M ₁ is the number of time-frequency domain base vectors with the maximum layer number of 1, and Q is the number of Doppler domain base vectors in the CSI to be reported; beta is a preset coefficient.

8. The CSI reporting method according to claim 3, wherein the non-zero coefficients comprise amplitude coefficients and/or phase coefficients;

wherein the method further comprises: n and M are determined in the following manner:

Wherein K ^NZ is the total number of the non-zero coefficients in the CSI to be reported; v is the number of layers of the CSI to be reported.

9. The CSI reporting method according to claim 3, wherein the non-zero coefficient comprises position indication information;

wherein the method further comprises: n and M are determined in the following manner:

Wherein K ^NZ is the total number of the non-zero coefficients in the CSI to be reported; v is the number of layers of the CSI to be reported; l is the number of space domain base vectors in the CSI to be reported, M _V is the number of frequency domain base vectors in the CSI to be reported, and Q is the number of Doppler domain base vectors in the CSI to be reported.

10. A CSI reporting method according to claim 1 or 3, wherein in case that it is determined that the non-zero coefficient having a priority level higher than a preset level is the first packet, the method further comprises:

And mapping the Doppler domain base vector indication information in the CSI to be reported to Group1 of the CSI Part 2.

11. The CSI reporting method according to claim 4, wherein determining the priority value of each non-zero coefficient according to the doppler index, the layer index, the spatial index, and the frequency domain index corresponding to the non-zero coefficient comprises:

the priority value Pri (l, i, f, d) of each non-zero coefficient is determined according to the following formula one according to the order of priority of the layer index, the spatial index, the frequency domain index and the doppler domain index from high to low:

Equation one: pri (l, i, f, d) = LvN ₃ d+2Lvpi (f) +vi+l;

And/or

Determining a priority value Pri (l, i, d, f) of each non-zero coefficient according to the arrangement order of the priorities of the layer index, the spatial index, the Doppler domain index and the frequency domain index from high to low according to the following formula II:

formula II: pri (l, i, d, f) =2 LvQ pi (f) +2Lvd+vi+l;

And/or

Determining a priority value Pri (l, d, i, f) of each non-zero coefficient according to the order of priority of the layer index, the doppler domain index, the spatial index and the frequency domain index from high to low according to the following formula three:

and (3) a formula III: pri (l, d, i, f) =2 LvQ pi (f) + vQi +vd+l;

Where l is the layer index, and l=1, 2, …, v; i is the spatial index, and i=0, 1, …,2L-1; f is the frequency domain index, and f=0, 1, …, M _v -1; d is the doppler domain index and d=0, 1, …, Q-1;

v is the number of layers of the CSI to be reported; l is the number of space domain base vectors in the CSI to be reported; m _v is the number of the frequency domain base vectors in the CSI to be reported; q is the number of Doppler domain base vectors in the CSI to be reported; n ₃ is the total number of frequency domain base vectors; pi (f) is a permutation function of the frequency domain index f.

12. The CSI reporting method according to any of claims 1 to 11, wherein sending CSI to be reported to a network device according to the encoded data comprises:

Discarding Group2 of the CSI Part2 when the uplink channel resource quantity allocated by the network equipment is smaller than the resource quantity required by the coded data, and obtaining the reporting data of the CSI to be reported;

and sending the reported data to the network equipment.

13. A method for reporting channel state information CSI, performed by a network device, the method comprising:

Receiving CSI reported by a terminal;

wherein non-zero coefficients in Group1 of the second portion CSIPart of CSI are the first packet;

the Doppler domain index corresponding to the nonzero coefficient in the first packet is a first value; and/or, the priority level of the non-zero coefficient in the first packet is higher than a preset level;

the first value is a Doppler domain index corresponding to the strongest coefficient.

14. The CSI reporting method of claim 13, wherein the non-zero coefficients in Group2 of the second partial CSI Part2 of the CSI are a second packet, the second packet comprising non-zero coefficients of the CSI other than the first packet.

15. The CSI reporting method according to claim 14, wherein a doppler domain index corresponding to the non-zero coefficient in the second packet is a second value; the second value is different from the first value.

16. The CSI reporting method according to claim 14, wherein in the CSI, if the priority level of the non-zero coefficient in the first packet is higher than a preset level, the method further comprises:

Determining the non-zero coefficient corresponding to the priority level arranged in the first N bits as the second group and the non-zero coefficient corresponding to the priority level arranged in the first N bits as the first group according to the arrangement sequence of the priority levels of the non-zero coefficients from low to high;

wherein M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the nth bit.

17. The CSI reporting method according to claim 13, wherein in the case that the doppler domain index corresponding to the non-zero coefficient in the first packet is a first value, the method further comprises:

the number of non-zero coefficients in Group1 of the CSIPart is determined from a target field in the CSI first part CSIPart of the CSI.

18. The CSI reporting method according to claim 13, wherein in the case that the doppler domain index corresponding to the non-zero coefficient in the first packet is a first value, the method further comprises:

And determining Doppler domain base vector indication information in the CSI according to the Group2 of the CSI Part2 of the CSI.

19. The CSI reporting method according to claim 17, wherein the method further comprises:

the bit width B _W of the target field is determined according to at least one of the following ways:

in case that the maximum layer number of the CSI is 1, determining

In case that the maximum layer number of the CSI is not 1, determining

Wherein, K ₀＝β2LM₁ Q; l is the number of space domain base vectors in the CSI, M ₁ is the number of time-frequency domain base vectors with the maximum layer number of 1, and Q is the number of Doppler domain base vectors in the CSI; beta is a preset coefficient.

20. The CSI reporting method according to claim 16, wherein the non-zero coefficients comprise amplitude coefficients and/or phase coefficients;

Wherein,

Wherein K ^NZ is the total number of the non-zero coefficients in the CSI; v is the number of layers of the CSI.

21. The CSI reporting method according to claim 16, wherein the non-zero coefficients comprise location indication information;

Wherein,

Wherein K ^NZ is the total number of the non-zero coefficients in the CSI; v is the number of layers of the CSI; l is the number of space domain base vectors in the CSI, M _V is the number of reported frequency domain base vectors in the CSI, and Q is the number of Doppler domain base vectors in the CSI.

22. The CSI reporting method according to claim 13 or 16, wherein in the CSI, if the priority level of the non-zero coefficient in the first packet is higher than a preset level, the method further comprises:

And determining Doppler domain base vector indication information in the CSI according to the Group1 of the CSI Part2 of the CSI.

23. The CSI reporting method according to any of claims 13 to 22, characterized in that the method further comprises:

and determining whether data in Group2 of the CSI Part2 of the CSI is discarded or not according to the quantity of uplink channel resources allocated to the terminal and the first Part of the CSI Part1 of the CSI.

24. The CSI reporting method according to claim 17, wherein the method further comprises:

And determining the actual data size of Group1 of the CSI Part2 according to the number of the non-zero coefficients in Group1 of the CSI Part2 recorded in the CSI Part1 under the condition that the data in Group2 of the CSI Part2 is discarded according to the quantity of uplink channel resources allocated to the terminal and the CSI first Part of the CSI Part 1.

25. The CSI reporting method according to claim 20 or 21, wherein the method further comprises:

And under the condition that the data in the Group2 of the CSI Part2 of the CSI is discarded according to the quantity of uplink channel resources allocated for the terminal and the CSI first Part of the CSI Part1, determining the number of non-zero coefficients in the Group1 of the CSI Part2 according to the value of the M, and determining the actual data size of the Group1 of the CSI Part 2.

26. A terminal comprising a memory, a transceiver, and a processor:

A memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

Acquiring a non-zero coefficient of the CSI to be reported;

Determining that the non-zero coefficient with the corresponding Doppler domain index as a first value is a first group, and/or determining that the non-zero coefficient with the priority level higher than a preset level is a first group; and the non-zero coefficients of the non-zero coefficients other than the first group are a second group; wherein the first value is a Doppler domain index corresponding to the strongest coefficient;

Mapping the first packet to Group1 of a second Part of CSI Part2 of the CSI, and mapping the second packet to Group2 of the CSI Part2 to obtain the coded data of the CSI to be reported;

And sending the CSI to be reported to the network equipment according to the coded data.

27. The terminal of claim 26, wherein the processor determining that the non-zero coefficients are second packets other than the first packet comprises:

determining that the non-zero coefficient with the corresponding Doppler domain index as a second value is the second group in the non-zero coefficients;

wherein the second value is different from the first value.

28. The terminal of claim 26, wherein the processor determining that the non-zero coefficient having a priority level higher than a preset level among the non-zero coefficients is a first packet, and the non-zero coefficient other than the first packet among the non-zero coefficients is a second packet comprises:

Determining the non-zero coefficient corresponding to the priority level arranged in the first N bits as the second group according to the arrangement sequence of the priority levels of the non-zero coefficients from low to high, and determining the non-zero coefficient corresponding to the priority level arranged in M bits after the first N bits as the first group;

wherein M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the nth bit.

29. The terminal of claim 26 or 28, wherein the processor is further configured to:

determining a priority value of each non-zero coefficient according to the Doppler domain index, the layer index, the airspace index and the frequency domain index corresponding to the non-zero coefficient;

Determining the priority level of each non-zero coefficient according to the priority value of each non-zero coefficient;

wherein, the priority values are arranged from big to small, and the corresponding priority levels are changed from low to high.

30. The terminal according to claim 26 or 27, wherein in case that the non-zero coefficient for which the corresponding doppler domain index is the first value is the first packet in the determining of the non-zero coefficient, the processor is further configured to:

Mapping the number of the non-zero coefficients in the first packet to a target field in CSI first Part CSI Part 1.

31. The terminal according to claim 26 or 27, wherein in case that the non-zero coefficient for which the corresponding doppler domain index is the first value is the first packet in the determining of the non-zero coefficient, the processor is further configured to:

and mapping the Doppler domain base vector indication information in the CSI to be reported to Group2 of the CSI Part 2.

32. The terminal according to claim 26 or 28, wherein in case it is determined that the non-zero coefficient having a priority level higher than a preset level is the first packet, the processor is further configured to:

And mapping the Doppler domain base vector indication information in the CSI to be reported to Group1 of the CSI Part 2.

33. A network device comprising a memory, a transceiver, and a processor:

A memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

Receiving CSI reported by a terminal;

wherein non-zero coefficients in Group1 of the second portion CSIPart of CSI are the first packet;

the Doppler domain index corresponding to the nonzero coefficient in the first packet is a first value; and/or, the priority level of the non-zero coefficient in the first packet is higher than a preset level;

the first value is a Doppler domain index corresponding to the strongest coefficient.

34. The network device of claim 33, wherein non-zero coefficients in Group2 of the second partial CSI Part2 of the CSI are a second packet, the second packet comprising non-zero coefficients of the CSI other than the first packet.

35. The network device of claim 34, wherein in the CSI, if the priority level of the non-zero coefficients in the first packet is higher than a preset level, the processor is further configured to:

Determining the non-zero coefficient corresponding to the priority level arranged in the first N bits as the second group and the non-zero coefficient corresponding to the priority level arranged in the first N bits as the first group according to the arrangement sequence of the priority levels of the non-zero coefficients from low to high;

wherein M and N are integers greater than or equal to 1 respectively; the preset level is equal to the priority level of the nth bit.

36. The network device of claim 33, wherein, in the case where the doppler index corresponding to the non-zero coefficient in the first packet is a first value, the processor is further configured to:

And determining the number of the nonzero coefficients in Group1 of the CSI Part2 according to a target field in the CSI first Part of the CSI Part 1.

37. The network device of claim 33, wherein, in the case where the doppler index corresponding to the non-zero coefficient in the first packet is a first value, the processor is further configured to:

And determining Doppler domain base vector indication information in the CSI according to the Group2 of the CSI Part2 of the CSI.

38. A channel state information CSI reporting device, applied to a terminal, the device comprising:

the acquisition module is used for acquiring a non-zero coefficient of the CSI to be reported;

The grouping module is used for determining that the non-zero coefficient with the corresponding Doppler domain index as a first value is a first grouping, and/or the non-zero coefficient with the priority level higher than a preset level is a first grouping; and the non-zero coefficients of the non-zero coefficients other than the first group are a second group; wherein the first value is a Doppler domain index corresponding to the strongest coefficient;

the data mapping module is used for mapping the first packet to the Group1 of the CSI second Part CSI Part2 and mapping the second packet to the Group2 of the CSI Part2 to obtain the coded data of the CSI to be reported;

and the sending module is used for sending the CSI to be reported to the network equipment according to the coded data.

39. A channel state information CSI reporting apparatus, applied to a network device, the apparatus comprising:

The receiving module is used for receiving the CSI reported by the terminal;

Wherein non-zero coefficients in Group1 of the second partial CSI Part2 of the CSI are a first packet;

the Doppler domain index corresponding to the nonzero coefficient in the first packet is a first value; and/or, the priority level of the non-zero coefficient in the first packet is higher than a preset level;

the first value is a Doppler domain index corresponding to the strongest coefficient.

40. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the CSI reporting method of any of claims 1 to 12 or to perform the CSI reporting method of any of claims 13 to 25.