TW202013917A - Channel state information reporting method, terminal device, and network device - Google Patents

Abstract

Disclosed in the present invention are a channel state information (CSI) reporting method, a terminal device, a network device, a chip, a computer readable storage medium, a computer program product and a computer program, which are able to reduce the overheads of feedback signaling and avoid occupying a large number of uplink resources. The method comprises: determining, according to at least one preset condition, the number of pieces of beam information included in a CSI reporting; the number of pieces of the beam information being the number of pieces of beam information corresponding to a part of all the beams; performing the CSI reporting according to the determined number of pieces of beam information; the at least one preset condition including at least one of the following: a DCI triggering the CSI reporting; a transmission parameter of the CSI reporting; and a physical resource corresponding to the CSI reporting.

Description

Channel status information reporting method, terminal equipment and network equipment

The present invention relates to the field of information processing technology, and in particular, to a method for reporting channel state information (CSI, Channel State Information), terminal equipment, network equipment, chips, computer-readable storage media, computer program products, and computer programs.

In the New Radio Interface (NR, New Radio) system, the type II codebook is used to determine the beam information. The current type II codebook supports acyclic reporting and quasi-persistent reporting. The terminal device needs to report beam information of all L beams each time it reports, wherein the number of all L beams is configured by high-level signaling. However, the feedback signaling overhead required by this reporting method is relatively large, and a large amount of uplink resources are required.

To solve the above technical problems, embodiments of the present invention provide a channel status information reporting method, terminal device, network device, chip, computer-readable storage medium, computer program product, and computer program, which can reduce the overhead of feedback signaling, and Avoid taking up a lot of upstream resources.

A first aspect of an embodiment of the present invention provides a CSI reporting method, which is applied to a terminal device and includes: determining the number of beam information included in the CSI report according to at least one preset condition; and determining the number of beam information according to the determined For CSI reporting; wherein, the at least one preset condition includes at least one of the following: a downlink control message (DCI, Downlink Control Information) that triggers the CSI reporting; transmission parameters for the CSI reporting; CSI reports the corresponding physical resources.

In a second aspect, a CSI reporting method is provided for a network device, which includes: determining the number of beam messages included in the CSI report of the terminal device, and receiving the terminal device according to the determined number of beam messages Report the CSI.

In an implementation manner of the present invention, after determining the number of beam information included in the CSI report of the terminal device, the method further includes: indicating to the terminal device by triggering the DCI reported by the CSI The number of beam information included in the CSI report.

In an implementation manner of the present invention, by triggering the DCI reported by the CSI, the terminal device is indicated the number of beam information included in the CSI report, including one of the following: by performing the DCI The wireless network temporary identifier RNTI used by CRC scrambling indicates the number of beam information included in the CSI report by the terminal device; the DCI format of the DCI instructs the terminal device to perform the CSI The number of beam information included in the report; the instruction message included in the DCI instructs the terminal device to perform the number of beam information included in the CSI report; by triggering the DCI reported by the CSI And the number of beam messages configured through high-level signaling, instructing the terminal device to perform the number of beam messages included in the CSI report.

In an implementation manner of the present invention, the DCI is used to trigger aperiodic CSI reporting, or to trigger quasi-persistent CSI reporting.

In an implementation manner of the present invention, the determining the number of beam information included in the CSI report of the terminal device includes: determining according to the transmission parameters reported by the CSI of the terminal device or the corresponding physical resources of the CSI report The number of beam information included in the CSI report.

In an implementation manner of the present invention, the number of beam information included in the CSI report is determined according to the transmission parameter reported by the CSI of the terminal device or the physical resource corresponding to the CSI report, including one of the following : Determine the number of beam information included in the CSI report according to the time slot used for the CSI report of the terminal device; determine the beam included in the CSI report according to the current number of CSI reports of the terminal device The number of messages; determine the number of beam messages included in the CSI report according to whether the CSI report of the terminal device is multiplexed with the data; determine the CSI report according to the bearer channel of the CSI report of the terminal device The number of beam messages contained in.

In an implementation manner of the present invention, the determining the number of beam information included in the CSI report according to the transmission parameters reported by the CSI of the terminal device or the corresponding physical resources of the CSI report includes: according to the terminal One of the following physical resources corresponding to the CSI report of the device: the subband, the bandwidth part BWP, and the time slot, to determine the number of beam information included in the CSI report.

In an implementation of the present invention, the beam information includes at least one of the following: beam vector, bandwidth amplitude information, subband amplitude information, and phase information.

In a third aspect, a terminal device is provided, including: a first processing unit that determines the number of beam messages included in the CSI report according to at least one preset condition; a first communication unit that determines the number of beam messages based on the CSI reporting; wherein, the at least one preset condition includes at least one of the following: DCI triggering the CSI reporting; transmission parameters of the CSI reporting; and physical resources corresponding to the CSI reporting.

In an implementation manner of the present invention, when the at least one preset condition includes DCI that triggers the CSI report, the first processing unit performs one of the following processes: performing CRC scrambling on the DCI Use the wireless network temporary identifier RNTI to determine the number of beam information included in the CSI report; determine the number of beam information included in the CSI report according to the DCI format of the DCI; The indication information included in the DCI determines the number of beam information included in the CSI report.

In an implementation manner of the present invention, when the at least one preset condition includes DCI triggering the CSI report, the first processing unit configures the DCI triggering the CSI report and high-level signaling configuration The number of beam information in the CSI report determines the number of beam information included in the CSI report.

In an implementation manner of the present invention, the first processing unit selects a value from the number of at least one beam message configured by high-layer signaling based on the DCI, and uses the selected value as included in the CSI report The number of beam messages.

In an implementation manner of the present invention, the number of the at least one beam information is: a maximum number of beam information; the first processing unit is based on the number of the maximum beam information and the DCI, from 1 to the maximum Among the number of beam information, the number of beam information included in the CSI report is selected.

In an implementation manner of the present invention, the DCI is used to trigger aperiodic CSI reporting, or to trigger quasi-persistent CSI reporting.

In an implementation manner of the present invention, when the at least one preset condition includes the transmission parameter reported by the CSI, the first processing unit performs one of the following processes: according to a time slot used for CSI reporting, Determine the number of beam information included in the CSI report; determine the number of beam information included in the CSI report according to the number of CSI reports; determine whether the CSI report is multiplexed with data for transmission The number of beam information included in the CSI report; according to the bearer channel reported by the CSI, determine the number of beam information included in the CSI report.

In an implementation manner of the present invention, when the at least one preset condition includes the physical resource corresponding to the CSI report, the first processing unit according to one of the following physical resources corresponding to the CSI report : Subband, bandwidth part BWP, time slot, determine the number of beam information included in the CSI report.

In an implementation of the present invention, the beam information includes at least one of the following: beam vector, bandwidth amplitude information, subband amplitude information, and phase information.

In an implementation manner of the present invention, the first communication unit determines the beam information in the preset codebook based on the determined number of beam information based on the preset codebook, and reports the beam information.

According to a fourth aspect, a network device is provided, including: a second processing unit that determines the number of beam messages included in the CSI report of the terminal device, and a second communication unit that receives the received information based on the determined number of beam messages The CSI report of the terminal device.

According to a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or various implementations thereof.

According to a sixth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or the various implementations thereof.

According to a seventh aspect, a wafer is provided for implementing any one of the above-mentioned first to second aspects or the method in each of the implementations thereof.

Specifically, the chip includes: a processor for calling and running a computer program from the memory, so that the device installed with the chip executes any one of the first aspect to the second aspect described above or each implementation manner thereof Methods.

According to an eighth aspect, there is provided a computer-readable storage medium for storing a computer program, which causes the computer to execute the method in any one of the above first to second aspects or their respective implementations.

In a ninth aspect, a computer program product is provided, which includes computer program instructions that cause a computer to execute the method in any one of the above first to second aspects or in various implementations thereof.

According to a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to execute the method in any one of the above first to second aspects or various implementations thereof.

The technical solution of the embodiment of the present invention can determine the number of beam information included in the CSI report of the terminal device according to the preset condition; thus, the terminal device can flexibly adjust the CSI report during the CSI report The number of included beam messages can further avoid the problem of always reporting CSI according to the number of beam messages configured by the network-side high-level signaling, resulting in excessive feedback signaling overhead and occupying a large amount of upstream resources.

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, and Broadband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Global Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiments of the present application may be as shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located within the coverage area. Optionally, the network device 110 may be a base transceiver station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a node (NodeB, NB) in a WCDMA system, or an LTE system. Evolutionary Node (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, relay station, access Point, vehicle equipment, wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or network devices in future public land mobile networks (PLMN).

The communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connection via wired lines, such as via Public Switched Telephone Networks (Public Switched Telephone Networks, PSTN), digital subscriber line (DSL), digital cables, direct cables Connection; and/or another data connection/network; and/or via a wireless interface, eg, for mobile networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks , Satellite network, AM-FM broadcast transmitter; and/or another terminal device set to receive/transmit communication signals; and/or Internet of Things (IoT) equipment. Terminal devices configured to communicate through a wireless interface may be referred to as "wireless communication terminals", "wireless terminals", or "mobile terminals". Examples of mobile terminals include but are not limited to satellites or mobile phones; Personal Communications System (PCS) terminals that can combine mobile radiotelephones with data processing, facsimile, and data communication capabilities; can include radiotelephones, pagers, and Internet /Intranet access, Web browser, notepad, calendar, and/or PDA with Global Positioning System (GPS) receiver; and conventional laptop and/or palm-type receiver or including radio telephone transceiver Other electronic devices. Terminal equipment can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless Communication equipment, user agent or user device. The access terminal may be a mobile phone, a wireless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), or wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in PLMNs that will evolve in the future.

Optionally, terminal-to-device (Device to Device, D2D) communication may be performed between the terminal devices 120.

Alternatively, the 5G system or 5G network may also be called a New Radio Interface (NR) system or NR network.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This is not limited in the embodiments of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller and an action management entity, which are not limited in the embodiments of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with a communication function. The network device 110 and the terminal device 120 may be the specific devices described above. It will be described again; the communication device may also include other devices in the communication system 100, such as network controllers, action management entities and other network entities, which are not limited in the embodiments of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone. three situations. In addition, the character “/” in this article generally indicates that the related objects are a “or” relationship.

Example one

An embodiment of the present invention provides a method for reporting channel state information (CSI, Channel State Information), which is applied to a terminal device, as shown in FIG. 2, including:

Step 201: Determine the number of beam information included in the CSI report according to at least one preset condition;

Step 202: Perform CSI reporting according to the determined number of beam information;

Wherein, the at least one preset condition includes at least one of the following:

Trigger the DCI reported by the CSI;

The transmission parameters reported by the CSI;

The CSI reports the corresponding physical resources.

The number of beam information corresponding to the beams reported by the CSI may be the number of beam information corresponding to some beams in all beams.

By adopting the above solution, it is possible to determine, through preset conditions, that the terminal device only reports the number of messages corresponding to some beams among all beams.

The following is a detailed description of the scenarios of the foregoing preset conditions:

scene one,

When the at least one preset condition includes a downlink control information (DCI, Downlink Control Information) that triggers the CSI report,

The determining the number of beam information included in the CSI report includes one of the following:

Determine the number of beam information included in the CSI report according to the RNTI used for CRC scrambling of the DCI;

Determine the number of beam information included in the CSI report according to the DCI format of the DCI;

According to the indication information included in the DCI, determine the number of beam information included in the CSI report.

Wherein, the DCI can be used to trigger periodic CSI reporting or continuous CSI reporting; wherein, acyclic reporting is to trigger a single CSI reporting through the DCI terminal; persistent CSI reporting can be Quasi-persistent reporting. Quasi-persistent reporting is to trigger the terminal to perform periodic CSI reporting through DCI or MAC signaling until it receives de-start signaling.

Specifically, the number of beam information included in the CSI report is determined according to a Radio Network Temporary Identity (RNTI, Radio Network Temporary Identity) used for CRC scrambling of the DCI.

For example, based on the first RNTI or the second RNTI used for CRC scrambling in the DCI, determine the number of beam information included in the CSI report; the first RNTI and the second RNTI correspond to different beam information Quantity. Wherein, the first RNTI and the second RNTI may be SP-CSI RNTI and Cell Radio Network Temporary Identifier (C-RNTI).

Assuming that the first RNTI and the second RNTI can be SP-CSI RNTI and C-RNTI, respectively, the DCI using SP-CSI RNTI for CRC scrambling and the DCI using C-RNTI for CRC scrambling can use different numbers. Because SP-CSI RNTI is used for quasi-persistent CSI reporting, C-RNTI is used for aperiodic CSI reporting, so that different CSI reporting methods can use different amounts of beam information, thereby flexibly adjusting the reporting Accuracy and overhead.

The number of beam information included in the CSI report is determined according to the DCI format of the DCI, for example, the CSI report triggered by the DCI format 0_0 and the CSI report triggered by the DCI format 0_1, the corresponding beam information The number can be different.

The determining the number of beam information included in the CSI report according to the indication information included in the DCI. The indication message included in the DCI is the content of the message contained in the DCI message field. For example, a certain field may be preset for the number of beam messages included in the DCI report.

Specifically, the indication information of the DCI may directly include the number of beam information. It can be directly indicated by the quantity indication message in DCI dedicated to the beam information. For example, if there are 4 beams, it is indicated by 2 bits.

Alternatively, the number of beam information included in the CSI report may be determined according to other information fields in the DCI. For example, the CSI request message field in the DCI is used to indicate the currently used CSI reporting configuration from multiple CSI reporting configurations, and each CSI reporting configuration may include the number of beam information. The target CSI reporting configuration is obtained through this message field, and the number of beam messages is also obtained.

Scene two

When the at least one preset condition includes the DCI triggering the CSI report, determine the included in the CSI report according to the DCI triggering the CSI report and the number of beam messages configured by higher layer signaling The number of beam messages.

There are two sub-scenes:

Sub scene 1,

Based on the DCI, a value is selected from the number of at least one beam information configured by higher layer signaling, and the selected value is used as the number of beam information included in the CSI report.

For example, if the candidate value of the number of beam messages configured by high-level signaling is {2, 4}, the bit message in DCI can be used to indicate whether the number of beam messages in the current CSI report is 2 or 4.

The number of bits of the bit information indicated in the DCI can be set according to the actual situation. For example, in the above example, one bit can be used to indicate which number of candidate values to select as the reported beam information quantity.

Sub-scene 2.

When the number of at least one beam message configured by higher layer signaling is only the maximum number of beam messages:

Based on the number of maximum beam information and the DCI, the number of beam information included in the CSI report is selected from 1 to the number of maximum beam information.

For example, the maximum number of beam messages configured by high-level signaling is L, that is, the number of beam messages that can be reported by the terminal device is any one of 1-L, and then log2 (L) in DCI can be used (Rounded up) bits to obtain the number of beam messages. These bits are used to indicate that the number of beam messages currently reported by the CSI is one of 1,2,...L.

For example, if the maximum number of beam messages configured by high-level signaling is L=4 and the message indicated in DCI is 10, then the beam information corresponding to the three beams can be reported by CSI.

Scenario 3: When the at least one preset condition includes the transmission parameter reported by the CSI,

The determining the number of beam information included in the CSI report includes one of the following:

Determine the number of beam information included in the CSI report according to the time slot used for CSI report;

Determine the number of beam information included in the CSI report according to the current number of CSI reports;

Determine the number of beam information included in the CSI report according to whether the CSI report is multiplexed and transmitted with data;

The number of beam information included in the CSI report is determined according to the bearer channel reported by the CSI.

The determining the number of beam information included in the CSI report according to the time slot used for CSI reporting may be specifically calculated according to the index of the time slot used for CSI reporting and the period of CSI reporting To obtain the number of beam messages; or, the correspondence between the time slot and the number of beam messages can be agreed in advance between the network side and the terminal device.

For example, assuming that the time slot index is S and the CSI reporting period is T, the terminal can determine the beam information used based on whether the result obtained by n=S/T (round down) is odd or even The number L can be set to even number corresponding to L=4, odd number corresponding to L=2.

Or, on the basis of calculating n, further determine the number L of beam information used according to k=n mod N, if k=0 then L=4, otherwise L=2; where N can be a conventional integer Value, mod is the operation of taking modulus.

The determining the number of beam information included in the CSI report according to the current number of CSI reports includes:

If the current CSI report is the n-th report, the number L of the beam information may be determined according to the value of n. Here, n and L are both positive numbers, and the corresponding relationship can be agreed in advance between the network side and the terminal. Among them, CSI reporting is periodic or quasi-continuous CSI reporting.

Further, the number L of beam information can be calculated according to the preset calculation formula, the current number of reports n and the preset value N; for example, k=n mod N can be used to determine the amount of beam information used L, for example, in the obtained result, k=0 then L=4, otherwise L=2, and N is a conventional integer value.

The determining the number of beam information included in the CSI report according to whether the CSI report is multiplexed with data may include: if the CSI report and data are multiplexed in the same channel, for example, in an entity If multiplexed in the PUSCH (Physical Uplink Shared Channel), the number of the beam information is the first number; if the CSI report and data are multiplexed in a different channel, that is, the CSI is independently transmitted, then all The number of the beam information is the second number; wherein the first number and the second number are both integers, and the first number>the second number.

The determining the number of beam information included in the CSI report according to the bearer channel reported by the CSI may be: assuming that there are two bearer channels, then report the first bearer signal or the second bearer channel according to the CSI To determine the number of corresponding beam messages.

For example, if the CSI report is carried through a physical uplink control channel (PUCCH, Physical Uplink Control CHannel), the number of beam information is a third number; if the CSI report is carried through a PUSCH, then the The number of beam information is the fourth quantity, and the third quantity> the fourth quantity.

Scene four

When the at least one preset condition includes the physical resource corresponding to the CSI report,

The determining the number of beam information included in the CSI report includes: determining one of the following physical resources corresponding to the CSI report: subband, bandwidth part (BWP, Bandwidth Part), time slot Describe the number of beam information included in the CSI report.

When the physical resource is a subband, the terminal determines the number of beam information according to the subband corresponding to the CSI report. Specifically, for the amplitude information and phase information that need to be reported for the subband, the number of amplitude information and phase information of the subband can be determined according to the subband corresponding to the current CSI.

For example, for the first subband configured or the best subband selected by the terminal, the amplitude and phase information of L beams can be reported; for other subbands, the amplitude and phase information of M beams can be reported, Where M>L.

The first subband may be determined according to the number of the subband, for example, it may be the first subband among the 8 subbands identified as 0-7, that is, subband 0 is the first subband Or, it can be the first subband in a subband group, for example, there can be a total of 16 subbands that can be identified as 0-15 subbands, where the specified set of subbands is 8-15, then the first One subband can be the subband 8.

In addition, the subband with the best quality can be determined according to indicators such as transmission rate, CQI or SINR, for example, the subband with the highest transmission rate or CQI or SINR can be used as the subband with the best quality, or can also be based on the subband The size of the load is not exhaustive in this embodiment.

When the physical resource is the bandwidth part (BWP), for the beam information that needs to be reported for the BWP, the number of beam information of the BWP can be determined according to the corresponding BWP reported by the current CSI. For example, the number of beam information can be determined according to the index of BWP. The network side may pre-configure a corresponding number of beam information for each BWP.

When the physical resource is a time slot, for the beam information that needs to be reported for the time slot, the number of beam information of the time slot can be determined according to the time slot corresponding to the current CSI. For example, CSI0 is the CSI of time slot 0, and CSI1 is the CSI of time slot 1, then CSI0 and CSI1 may have different amounts of beam information. The time slot corresponding to the CSI may be a time slot for measuring the CSI, or may be a time slot where the CSI reference resource of the CSI is located.

In this embodiment, the beam information includes at least one of the following: beam vector, bandwidth amplitude information, subband amplitude information, and phase information.

，m1和m2分別對應該波束的水準垂直兩個維度，i可以表示波束的標識或者編號；寬頻幅度訊息可以表示為

，

，對應於層l和波束i在整個頻寬上的幅度係數；子帶幅度訊息可以表示為

，

，應於層l和波束i在每個子帶上的幅度係數；相位訊息可以表示為

和

，

和

分別對應兩個極化方向上的相位，對應於層l和波束i。Among them, the beam vector can be expressed as

, M1 and m2 respectively correspond to the horizontal and vertical dimensions of the beam, i can represent the identification or number of the beam; the broadband amplitude information can be expressed as

,

, Corresponding to the amplitude coefficient of layer l and beam i over the entire bandwidth; the subband amplitude information can be expressed as

,

, Corresponding to the amplitude coefficient of layer l and beam i on each subband; the phase information can be expressed as

with

,

with

Corresponding to the phase in the two polarization directions respectively, corresponding to layer 1 and beam i.

The CSI reporting according to the determined number of beam information includes:

According to the determined number of beam information, the beam information in the preset codebook is determined based on the preset codebook, and the beam information is reported.

The preset codebook may be a type II codebook; correspondingly, according to the determined number L of beam information, the beam information in the codebook is determined based on the type II codebook, and the beam information is reported. For example, determine beam vectors, broadband amplitude information, and phase information corresponding to L beams in multiple beams, and then report these beam information.

Regarding the aforementioned type II codebook, it can support the transmission of up to two layers. Among them, the codebooks of layer 1 and rank 2 are as follows:

；For Rank1,

;

；For Rank2,

;

；among them,

;

是歸一化係數；In the above formula,

Is the normalization coefficient;

對應波束i，是二維DFT波束向量，m1和m2分別對應該波束的水準垂直兩個維度；

分別對應兩個層各自的碼本向量；The value of the number L of beam information is the same as the number of beam information in the present embodiment;

The corresponding beam i is a two-dimensional DFT beam vector, and m1 and m2 respectively correspond to the horizontal and vertical dimensions of the beam;

Corresponding to the codebook vectors of the two layers respectively;

和

，分別對應兩個極化方向的碼本向量；

和

分別對應寬頻和子帶的幅度係數，對應於層l和波束i；

和

分別對應兩個極化方向上的相位，對應於層l和波束i；可用的相位數量可以是4，對應正交相移鍵控（QPSK ，Quadrature Phase Shift Keyin），或者8，對應8相移鍵控調製（PSK，Phase Shift Keyin）。The codebook vector of each layer is composed of two parts:

with

, Corresponding to the codebook vectors of the two polarization directions;

with

Corresponding to the amplitude coefficients of the broadband and sub-band, respectively, corresponding to layer l and beam i;

with

Corresponding to the phases in the two polarization directions respectively, corresponding to layer l and beam i; the number of available phases can be 4, corresponding to quadrature phase shift keying (QPSK, Quadrature Phase Shift Keyin), or 8, corresponding to 8 phase shifts Keyed modulation (PSK, Phase Shift Keyin).

It should be noted that, in this embodiment, when the CSI reporting including beam information corresponding to multiple beams is performed, the specific information type contained in the beam information reported by each beam is the same, for example, all beams are reported Vector, bandwidth amplitude and phase information; or, set to report beam vector, broadband amplitude information, subband amplitude information and phase information. Specifically, the type of the reported message can be configured by the network side according to the actual situation, and this embodiment does not exhaustively.

The CSI here includes at least one of CRI, RI, PMI, and CQI.

It can be seen that by adopting the above scheme, the number of beam information included in the CSI report by the terminal device can be determined according to the preset conditions; thus, the terminal device can flexibly adjust the content included in the CSI report when performing the CSI report The number of beam messages can further avoid the problem of always reporting CSI according to the number of beam messages configured by the network-side high-level signaling, resulting in excessive feedback signaling overhead and occupying a large amount of upstream resources.

Example 2

An embodiment of the present invention provides a CSI reporting method, which is applied to network equipment, as shown in FIG. 3, including:

Step 301: Determine the number of beam information included in the CSI report of the terminal device;

Step 302: Receive the CSI report of the terminal device according to the determined quantity of the beam information.

In the processing of this embodiment, the following two methods may also be included: After the network side itself determines the number of beam messages reported by the terminal device CSI, it is indicated to the terminal device by triggering the DCI of the terminal device to report the CSI The number of beam messages; and, the network side itself determines the number of beam messages included in the CSI report according to the transmission parameters reported by the terminal device CSI, or the corresponding physical resources of the CSI report, and waits for reception based on the determined number CSI reporting of terminal equipment. specific:

Method 1,

After determining the number of beam information included in the CSI report of the terminal device, the method further includes:

By triggering the DCI reported by the CSI, the terminal device is indicated the number of beam information included in the CSI report.

Wherein, the indicating the number of beam information included in the CSI report to the terminal device has a function of enabling the terminal device to report CSI according to the number of beam information.

The DCI triggering the CSI report indicates the number of beam information included in the CSI report to the terminal device, including one of the following:

The number of beam information included in the CSI report is instructed by the terminal equipment to perform the CRC scrambling of the DCI on the wireless network temporary identifier RNTI;

The DCI format of the DCI is used to instruct the terminal device to perform the number of beam information included in the CSI report;

Indicating the number of beam information included in the CSI report by the terminal device through the indication message included in the DCI;

The number of beam information included in the CSI report is instructed to the terminal device by triggering the DCI reported by the CSI and the number of beam information configured by high-layer signaling.

Wherein, the DCI can be used to trigger periodic CSI reporting or continuous CSI reporting; wherein, acyclic reporting is to trigger a single CSI reporting through the DCI terminal; persistent CSI reporting can be Quasi-persistent reporting. Quasi-persistent reporting is to trigger the terminal to perform periodic CSI reporting through DCI or Media Access Control (MAC, Media Access Control) signaling until de-start signaling is received.

Specifically, the RNTI adopted by performing CRC scrambling on the DCI instructs the terminal device to perform the number of beam information included in the CSI report.

For example, the terminal device may determine the number of beam information included in the CSI report based on the first RNTI or the second RNTI used for CRC scrambling in the DCI; the first RNTI and the second RNTI correspond to different The number of beam messages. Wherein, the first RNTI and the second RNTI may be SP-CSI RNTI and Cell Radio Network Temporary Identifier (C-RNTI).

Assuming that the first RNTI and the second RNTI can be SP-CSI RNTI and C-RNTI, respectively, the DCI using SP-CSI RNTI for CRC scrambling and the DCI using C-RNTI for CRC scrambling can use different numbers. Because SP-CSI RNTI is used for quasi-persistent CSI reporting, C-RNTI is used for aperiodic CSI reporting, so that different CSI reporting methods can use different amounts of beam information, thereby flexibly adjusting the reporting Accuracy and overhead.

The DCI format of the DCI indicates the number of beam information included in the CSI report by the terminal device. For example, the CSI report triggered by the DCI format 0_0 and the CSI report triggered by the DCI format 0_1 correspond to The number of beam information can be different.

The indication message included in the DCI instructs the terminal device to perform the number of beam messages included in the CSI report. The indication message included in the DCI is the content of the message contained in the DCI message field. For example, a certain field may be preset for the number of beam messages included in the DCI report.

Specifically, the indication information of the DCI may directly include the number of beam information. It can be directly indicated by the quantity indication message in DCI dedicated to the beam information. For example, if there are 4 beams, it is indicated by 2 bits.

Alternatively, the terminal device may also determine the number of beam messages according to other message fields in the DCI. For example, the CSI request message field in the DCI is used to indicate the currently used CSI reporting configuration from multiple CSI reporting configurations, and each CSI reporting configuration may include the number of beam information. The target CSI reporting configuration is obtained through this message field, and the number of beam messages is also obtained.

The number of beam messages configured by triggering the CSI report and the number of beam messages configured by high-layer signaling indicates the terminal device to perform the number of beam messages included in the CSI report. corresponding,

Can contain two sub-scenes: a beam with the largest beam information

Sub scene 1,

The number of beam messages configured by the high-level signaling is at least one beam of beam messages.

Correspondingly, the terminal device selects a value from the number of at least one beam information configured by high-layer signaling based on the DCI, and uses the selected value as the number of beam information included in the CSI report.

For example, if the candidate value of the number of beam messages configured by high-level signaling is {2, 4}, the bit message in DCI can be used to indicate whether the number of beam messages in the current CSI report is 2 or 4.

The number of bits of the bit information indicated in the DCI can be set according to the actual situation. For example, in the above example, one bit can be used to indicate which number of candidate values to select as the reported beam information quantity.

Sub-scene 2.

The number of at least one beam message configured by higher layer signaling is only the number of the largest beam message.

The terminal device may select the number of beam information included in the CSI report from 1 to the number of maximum beam information based on the number of maximum beam information and the DCI.

Method 2.

The determining the number of beam information included in the CSI report of the terminal device includes:

The number of beam information included in the CSI report is determined according to the transmission parameters reported by the CSI of the terminal device or the physical resources corresponding to the CSI report.

In this way, after determining the number of beam information included in the CSI report by the terminal device, the network side receives the CSI report of the terminal device according to the determined number.

The determining the number of beam information included in the CSI report according to the transmission parameters reported by the CSI of the terminal device or the corresponding physical resources of the CSI report includes one of the following:

Determine the number of beam information included in the CSI report according to the time slot used for the CSI report of the terminal device;

Determine the number of beam information included in the CSI report according to the current number of CSI reports of the terminal device;

Determine the number of beam information included in the CSI report according to whether the CSI report of the terminal device is multiplexed and transmitted with data;

The quantity of beam information included in the CSI report is determined according to the bearer channel reported by the CSI of the terminal device.

Wherein, the determining the number of beam information included in the CSI report according to the time slot used for CSI reporting of the terminal device may specifically be: according to the index of the time slot used for CSI reporting and the CSI Calculate the reporting period to obtain the number of beam messages; or, the correspondence between the time slot and the number of beam messages can be agreed in advance between the network side and the terminal device.

For example, assuming that the time slot index is S and the CSI reporting period is T, the terminal can determine the beam information used based on whether the result obtained by n=S/T (round down) is odd or even The number L can be set to even number corresponding to L=4, odd number corresponding to L=2.

Or, on the basis of calculating n, further determine the number L of beam information used according to k=n mod N, if k=0 then L=4, otherwise L=2; where N can be a conventional integer Value, mod is the operation of taking modulus.

The determining the number of beam information included in the CSI report according to the current number of CSI reports of the terminal device includes: if the current CSI report is the n-th report, it can be determined according to the value of n The number L of the beam information. Here, n and L are both positive numbers, and the corresponding relationship can be agreed in advance between the network side and the terminal. Wherein, the CSI reporting is periodic or quasi-continuous CSI reporting.

Further, the number L of beam information can be calculated according to the preset calculation formula, the current number of reports n and the preset value N; for example, k=n mod N can be used to determine the amount of beam information used L, for example, in the obtained result, k=0 then L=4, otherwise L=2, and N is a conventional integer value.

The determining the number of beam information included in the CSI report according to whether the CSI report of the terminal device is multiplexed with the data may include: if the CSI report and the data are multiplexed in the same channel, For example, multiplexing in a physical uplink shared channel (PUSCH, Physical Uplink Shared Channel), the number of the beam information is the first quantity; if the CSI report and data are multiplexed in a different channel, that is, the CSI is independently transmitted , The number of the beam information is the second number; wherein, the first number and the second number are both integers, and the first number>the second number.

The determining of the number of beam information included in the CSI report according to the bearer channel reported by the CSI may be: assuming that there are two bearer channels, then report the first bearer signal or the second bearer channel according to the CSI, to Determine the number of corresponding beam messages.

For example, if the CSI report is carried through a physical uplink control channel (PUCCH, Physical Uplink Control CHannel), the number of beam information is a third number; if the CSI report is carried through a PUSCH, then the The number of beam information is the fourth quantity, and the third quantity> the fourth quantity.

The determining the number of beam information included in the CSI report according to the transmission parameters reported by the CSI of the terminal device or the physical resources corresponding to the CSI report includes:

Determine the number of beam information included in the CSI report according to one of the following physical resources corresponding to the CSI report of the terminal device: subband, BWP, and time slot.

When the physical resource is a subband, the terminal determines the number of beam information according to the subband corresponding to the CSI report. Specifically, for the amplitude information and phase information that need to be reported for the subband, the number of amplitude information and phase information of the subband can be determined according to the subband corresponding to the current CSI.

For example, for the first subband configured or the best subband selected by the terminal, the amplitude and phase information of L beams can be reported; for other subbands, the amplitude and phase information of M beams can be reported, Where M>L.

The first subband may be determined according to the number of the subband, for example, it may be the first subband among the 8 subbands identified as 0-7, that is, subband 0 is the first subband Or, it can be the first subband in a subband group, for example, there can be a total of 16 subbands that can be identified as 0-15 subbands, where the specified set of subbands is 8-15, then the first One subband can be the subband 8.

In addition, the subband with the best quality can be determined according to indicators such as transmission rate, CQI or SINR, for example, the subband with the highest transmission rate or CQI or SINR can be used as the subband with the best quality, or can also be based on the subband The size of the load is not exhaustive in this embodiment.

When the physical resource is the bandwidth part (BWP), for the beam information that needs to be reported for the BWP, the number of beam information of the BWP can be determined according to the corresponding BWP reported by the current CSI. For example, the number of beam information can be determined according to the index of BWP. The network side may pre-configure a corresponding number of beam information for each BWP.

When the physical resource is a time slot, for the beam information that needs to be reported for the time slot, the number of beam information of the time slot can be determined according to the time slot corresponding to the current CSI. For example, CSI0 is the CSI of time slot 0, and CSI1 is the CSI of time slot 1, then CSI0 and CSI1 may have different amounts of beam information. The time slot corresponding to the CSI may be a time slot for measuring the CSI, or may be a time slot where the CSI reference resource of the CSI is located.

In this embodiment, the beam information includes at least one of the following: beam vector, bandwidth amplitude information, subband amplitude information, and phase information.

，m1和m2分別對應該波束的水準垂直兩個維度，i可以表示波束的標識或者編號；寬頻幅度訊息可以表示為

，

，對應於層l和波束i在整個頻寬上的幅度係數；子帶幅度訊息可以表示為

，

，應於層l和波束i在每個子帶上的幅度係數；相位訊息可以表示為

和

，

和

分別對應兩個極化方向上的相位，對應於層l和波束i。Among them, the beam vector can be expressed as

, M1 and m2 respectively correspond to the horizontal and vertical dimensions of the beam, i can represent the identification or number of the beam; the broadband amplitude information can be expressed as

,

, Corresponding to the amplitude coefficient of layer l and beam i over the entire bandwidth; the subband amplitude information can be expressed as

,

, Corresponding to the amplitude coefficient of layer l and beam i on each subband; the phase information can be expressed as

with

,

with

Corresponding to the phase in the two polarization directions respectively, corresponding to layer 1 and beam i.

The CSI here includes at least one of CRI, RI, PMI, and CQI.

It can be seen that by adopting the above scheme, the number of beam information included in the CSI report by the terminal device can be determined according to the preset conditions; thus, the terminal device can flexibly adjust the content included in the CSI report when performing the CSI report The number of beam messages can further avoid the problem of always reporting CSI according to the number of beam messages configured by the network-side high-level signaling, resulting in excessive feedback signaling overhead and occupying a large amount of upstream resources.

Example three

An embodiment of the present invention provides a terminal device, as shown in FIG. 4, including:

The first processing unit 41 determines the number of beam information included in the CSI report according to at least one preset condition;

The first communication unit 42 performs CSI reporting according to the determined number of beam messages;

Wherein, the at least one preset condition includes at least one of the following:

Trigger the DCI reported by the CSI;

The transmission parameters reported by the CSI;

The CSI reports the corresponding physical resources.

The number of beam information corresponding to the beams reported by the CSI may be the number of beam information corresponding to some beams in all beams.

By adopting the above solution, it is possible to report the number of messages corresponding to some beams among all beams through preset conditions.

The following is a detailed description of the scenarios of the foregoing preset conditions:

scene one,

When the at least one preset condition includes a downlink control information (DCI, Downlink Control Information) that triggers the CSI report,

The first processing unit 41 performs one of the following processes:

Determine the number of beam information included in the CSI report according to the RNTI used for CRC scrambling of the DCI;

Determine the number of beam information included in the CSI report according to the DCI format of the DCI;

According to the indication information included in the DCI, determine the number of beam information included in the CSI report.

Wherein, the DCI can be used to trigger periodic CSI reporting or continuous CSI reporting; wherein, acyclic reporting is to trigger a single CSI reporting through the DCI terminal; persistent CSI reporting can be Quasi-persistent reporting. Quasi-persistent reporting is to trigger the terminal to perform periodic CSI reporting through DCI or MAC signaling until it receives de-start signaling.

Specifically, the first processing unit 41 determines the number of beam information included in the CSI report according to the RNTI used for CRC scrambling of the DCI.

For example, based on the first RNTI or the second RNTI used for CRC scrambling in the DCI, determine the number of beam information included in the CSI report; the first RNTI and the second RNTI correspond to different beam information Quantity. Wherein, the first RNTI and the second RNTI may be SP-CSI RNTI and Cell Radio Network Temporary Identifier (C-RNTI).

Assuming that the first RNTI and the second RNTI can be SP-CSI RNTI and C-RNTI, respectively, the DCI using SP-CSI RNTI for CRC scrambling and the DCI using C-RNTI for CRC scrambling can use different numbers. Because SP-CSI RNTI is used for quasi-persistent CSI reporting, C-RNTI is used for aperiodic CSI reporting, so that different CSI reporting methods can use different amounts of beam information, thereby flexibly adjusting the reporting Accuracy and overhead.

The number of beam information included in the CSI report is determined according to the DCI format of the DCI, for example, the CSI report triggered by the DCI format 0_0 and the CSI report triggered by the DCI format 0_1, the corresponding beam information The number can be different.

The determining the number of beam information included in the CSI report according to the indication information included in the DCI. The indication message included in the DCI is the content of the message contained in the DCI message field. For example, a certain field may be preset for the number of beam messages included in the DCI report.

Specifically, the indication information of the DCI may directly include the number of beam information. It can be directly indicated by the quantity indication message in DCI dedicated to the beam information. For example, if there are 4 beams, it is indicated by 2 bits.

Alternatively, the number of beam messages can be determined according to other message fields in the DCI. For example, the CSI request message field in the DCI is used to indicate the currently used CSI reporting configuration from multiple CSI reporting configurations, and each CSI reporting configuration may include the number of beam information. The target CSI reporting configuration is obtained through this message field, and the number of beam messages is also obtained.

Scene two

When the at least one preset condition includes the DCI triggering the CSI report, the first processing unit 41 determines the CSI according to the DCI triggering the CSI report and the number of beam messages configured by high-level signaling The number of beam messages included in the report.

There are two sub-scenes:

Sub scene 1,

The first processing unit 41 selects a value from the number of at least one beam information configured by high-layer signaling based on the DCI, and uses the selected value as the number of beam information included in the CSI report.

For example, if the candidate value of the number of beam messages configured by high-level signaling is {2, 4}, the bit message in DCI can be used to indicate whether the number of beam messages in the current CSI report is 2 or 4.

The number of bits of the bit information indicated in the DCI can be set according to the actual situation. For example, in the above example, one bit can be used to indicate which number of candidate values to select as the reported beam information quantity.

Sub-scene 2.

When the number of at least one beam message configured by higher layer signaling is only the number of the maximum beam message, the first processing unit 41, based on the number of the maximum beam messages and the DCI, from 1 to the number of the maximum beam messages Select the number of beam information included in the CSI report.

For example, the maximum number of beam messages configured by high-level signaling is L, that is, the maximum number of beam messages that can be configured by the terminal device for high-level signaling is L, that is, the number of beam messages that the terminal device can report is Any one of 1-L, at this time, the number of beam information can be obtained by log2 (L) (rounded up) bits in DCI, these bits are used to indicate the beam information of the current CSI reported beam information The number is one of 1,2,...L.

For example, if the maximum number of beam messages configured by high-level signaling is L=4 and the message indicated in DCI is 10, then the beam information corresponding to the three beams can be reported by CSI.

Scenario 3: When the at least one preset condition includes the transmission parameter reported by the CSI,

The first processing unit 41 performs one of the following processes:

Determine the number of beam information included in the CSI report according to the time slot used for CSI report;

Determine the number of beam information included in the CSI report according to the current number of CSI reports;

Determine the number of beam information included in the CSI report according to whether the CSI report is multiplexed and transmitted with data;

The number of beam information included in the CSI report is determined according to the bearer channel reported by the CSI.

The determining the number of beam information included in the CSI report according to the time slot used for CSI reporting may specifically be: the first processing unit 41, according to the index of the time slot used for CSI reporting, And calculating the period of the CSI report to obtain the number of beam messages; or, the correspondence between the time slot and the number of beam messages can be agreed in advance between the network side and the terminal device.

For example, assuming that the time slot index is S and the CSI reporting period is T, the terminal can determine the beam information used based on whether the result obtained by n=S/T (round down) is odd or even The number L can be set to even number corresponding to L=4, odd number corresponding to L=2.

Or, the first processing unit 41, on the basis of calculating n, further determines the number L of beam information used according to k=n mod N, if k=0 then L=4, otherwise L=2; where , N can be a conventional integer value.

The first processing unit 41 may determine the number L of the beam information according to the value of n if the current CSI report is the n-th report. Here, n and L are both positive numbers, and the corresponding relationship can be agreed in advance between the network side and the terminal. Wherein, the CSI reporting is periodic or quasi-continuous CSI reporting.

Further, the number L of beam information can be calculated according to the preset calculation formula, the current number of reports n and the preset value N; for example, k=n mod N can be used to determine the amount of beam information used L, for example, in the obtained result, k=0 then L=4, otherwise L=2, N is a conventional integer value, and mod is a modulus operation.

The first processing unit 41, if the CSI report and the data are multiplexed in the same channel, for example, in a physical uplink shared channel (PUSCH, Physical Uplink Shared Channel), the number of the beam information is The first quantity; if the CSI report and data are multiplexed in a different channel, that is, the CSI is independently transmitted, the number of the beam information is the second quantity; wherein, the first quantity and the second quantity are integers, And the first quantity> the second quantity.

The determining the number of beam information included in the CSI report according to the bearer channel reported by the CSI may be: assuming that there are two bearer channels, then report the first bearer signal or the second bearer channel according to the CSI To determine the number of corresponding beam messages.

For example, if the CSI report is carried through a physical uplink control channel (PUCCH, Physical Uplink Control CHannel), the number of beam information is a third number; if the CSI report is carried through a PUSCH, then the The number of beam information is the fourth quantity, and the third quantity> the fourth quantity.

Scene four

When the at least one preset condition includes the physical resource corresponding to the CSI report,

The first processing unit 41 determines the number of beam information included in the CSI report according to one of the following physical resources corresponding to the CSI report: subband, BWP, and time slot.

When the physical resource is a subband, the first processing unit 41 determines the number of beam information according to the subband corresponding to the CSI report. Specifically, for the amplitude information and phase information that need to be reported for the subband, the number of amplitude information and phase information of the subband can be determined according to the subband corresponding to the current CSI.

For example, for the first subband configured or the best subband selected by the terminal, the amplitude and phase information of L beams can be reported; for other subbands, the amplitude and phase information of M beams can be reported, Where M>L.

The first subband may be determined according to the number of the subband, for example, it may be the first subband among the 8 subbands identified as 0-7, that is, subband 0 is the first subband Or, it can be the first subband in a subband group, for example, there can be a total of 16 subbands that can be identified as 0-15 subbands, where the specified set of subbands is 8-15, then the first One subband can be the subband 8.

In addition, the subband with the best quality can be determined according to indicators such as transmission rate, CQI or SINR, for example, the subband with the highest transmission rate or CQI or SINR can be used as the subband with the best quality, or can also be based on the subband The size of the load is not exhaustive in this embodiment.

When the physical resource is the bandwidth part (BWP), for the beam information that needs to be reported for the BWP, the number of beam information of the BWP can be determined according to the corresponding BWP reported by the current CSI. For example, the number of beam information can be determined according to the index of BWP. The network side may pre-configure a corresponding number of beam information for each BWP.

When the physical resource is a time slot, for the beam information that needs to be reported for the time slot, the number of beam information of the time slot can be determined according to the time slot corresponding to the current CSI. For example, CSI0 is the CSI of time slot 0, and CSI1 is the CSI of time slot 1, then CSI0 and CSI1 may have different amounts of beam information. The time slot corresponding to the CSI may be a time slot for measuring the CSI, or may be a time slot where the CSI reference resource of the CSI is located.

In this embodiment, the beam information includes at least one of the following: beam vector, bandwidth amplitude information, subband amplitude information, and phase information.

，m1和m2分別對應該波束的水準垂直兩個維度，i可以表示波束的標識或者編號；寬頻幅度訊息可以表示為

，

，對應於層l和波束i在整個頻寬上的幅度係數；子帶幅度訊息可以表示為

，

，應於層l和波束i在每個子帶上的幅度係數；相位訊息可以表示為

和

，

和

分別對應兩個極化方向上的相位，對應於層l和波束i。Among them, the beam vector can be expressed as

, M1 and m2 respectively correspond to the horizontal and vertical dimensions of the beam, i can represent the identification or number of the beam; the broadband amplitude information can be expressed as

,

, Corresponding to the amplitude coefficient of layer l and beam i over the entire bandwidth; the subband amplitude information can be expressed as

,

, Corresponding to the amplitude coefficient of layer l and beam i on each subband; the phase information can be expressed as

with

,

with

The phases in the two polarization directions correspond to layer 1 and beam i, respectively.

The first communication unit 42 determines the beam information in the preset codebook based on the determined number of beam information, and reports the beam information based on the preset codebook.

Wherein, the preset codebook may be a type II codebook; correspondingly, the first communication unit 32 determines the beam information in the codebook based on the determined number L of beam information based on the type II codebook and reports to the Said beam information. For example, determine beam vectors, broadband amplitude information, and phase information corresponding to L beams in multiple beams, and then report these beam information.

Regarding the aforementioned type II codebook, it can support the transmission of up to two layers. Among them, the codebooks of layer 1 and rank 2 are as follows:

；For Rank1,

;

；For Rank2,

;

；among them,

;

是歸一化係數；In the above formula,

Is the normalization coefficient;

對應波束i，是二維DFT波束向量，m1和m2分別對應該波束的水準垂直兩個維度；

分別對應兩個層各自的碼本向量；The value of the number L of beam information is the same as the number of beam information in the present embodiment;

The corresponding beam i is a two-dimensional DFT beam vector, and m1 and m2 respectively correspond to the horizontal and vertical dimensions of the beam;

Corresponding to the respective codebook vectors of the two layers;

和

，分別對應兩個極化方向的碼本向量；

和

分別對應寬頻和子帶的幅度係數，對應於層l和波束i；

和

分別對應兩個極化方向上的相位，對應於層l和波束i；可用的相位數量可以是4，對應正交相移鍵控（QPSK ，Quadrature Phase Shift Keyin），或者8，對應8相移鍵控調製（PSK，Phase Shift Keyin）。The codebook vector of each layer is composed of two parts:

with

, Corresponding to the codebook vectors of the two polarization directions;

with

Corresponding to the amplitude coefficients of the broadband and sub-band, respectively, corresponding to layer l and beam i;

with

Corresponding to the phases in the two polarization directions respectively, corresponding to layer 1 and beam i; the number of available phases can be 4, corresponding to quadrature phase shift keying (QPSK, Quadrature Phase Shift Keyin), or 8, corresponding to 8 phase shifts Keyed modulation (PSK, Phase Shift Keyin).

It should be noted that, in this embodiment, when the CSI reporting including beam information corresponding to multiple beams is performed, the specific information type contained in the beam information reported by each beam is the same, for example, all beams are reported Vector, bandwidth amplitude and phase information; or, set to report beam vector, broadband amplitude information, subband amplitude information and phase information. Specifically, the type of the reported message can be configured by the network side according to the actual situation, and this embodiment does not exhaustively.

The CSI here includes at least one of CRI, RI, PMI, and CQI.

It can be seen that by adopting the above scheme, the number of beam information included in the CSI report by the terminal device can be determined according to the preset conditions; thus, the terminal device can flexibly adjust the content included in the CSI report when performing the CSI report The number of beam messages can further avoid the problem of always reporting CSI according to the number of beam messages configured by the network-side high-level signaling, resulting in excessive feedback signaling overhead and occupying a large amount of upstream resources.

Example 4

An embodiment of the present invention provides a network device, as shown in FIG. 5, including:

The second processing unit 51 determines the number of beam information included in the CSI report of the terminal device;

The second communication unit 52 receives the CSI report of the terminal device according to the determined number of the beam information.

In the processing of this embodiment, the following two methods may also be included: After the network side itself determines the number of beam messages reported by the terminal device CSI, it is indicated to the terminal device by triggering the DCI of the terminal device to report the CSI The number of beam messages; and, the network side itself determines the number of beam messages included in the CSI report according to the transmission parameters reported by the terminal device CSI, or the corresponding physical resources of the CSI report, and waits for reception based on the determined number CSI reporting of terminal equipment. specific:

Method 1,

The second communication unit 52 indicates the number of beam information included in the CSI report to the terminal device by triggering the DCI for the CSI report.

Wherein, the indicating the number of beam information included in the CSI report to the terminal device has a function of enabling the terminal device to report CSI according to the number of beam information.

The second communication unit 52 performs one of the following processes:

The number of beam information included in the CSI report is instructed by the terminal equipment to perform the CRC scrambling of the DCI on the wireless network temporary identifier RNTI;

The DCI format of the DCI is used to instruct the terminal device to perform the number of beam information included in the CSI report;

Indicating the number of beam information included in the CSI report by the terminal device through the indication message included in the DCI;

The number of beam information included in the CSI report is instructed to the terminal device by triggering the DCI reported by the CSI and the number of beam information configured by high-layer signaling.

Wherein, the DCI can be used to trigger periodic CSI reporting or continuous CSI reporting; wherein, acyclic reporting is to trigger a single CSI reporting through the DCI terminal; persistent CSI reporting can be Quasi-persistent reporting. Quasi-persistent reporting is to trigger the terminal to perform periodic CSI reporting through DCI or Media Access Control (MAC, Media Access Control) signaling until de-start signaling is received.

Specifically, the RNTI adopted by performing CRC scrambling on the DCI instructs the terminal device to perform the number of beam information included in the CSI report.

For example, the terminal device may determine the number of beam information included in the CSI report based on the first RNTI or the second RNTI used for CRC scrambling in the DCI; the first RNTI and the second RNTI correspond to different The number of beam messages. Wherein, the first RNTI and the second RNTI may be SP-CSI RNTI and Cell Radio Network Temporary Identifier (C-RNTI).

Assuming that the first RNTI and the second RNTI can be SP-CSI RNTI and C-RNTI, respectively, the DCI using SP-CSI RNTI for CRC scrambling and the DCI using C-RNTI for CRC scrambling can use different numbers. Because SP-CSI RNTI is used for quasi-persistent CSI reporting, C-RNTI is used for aperiodic CSI reporting, so that different CSI reporting methods can use different amounts of beam information, thereby flexibly adjusting the reporting Accuracy and overhead.

The DCI format of the DCI indicates the number of beam information included in the CSI report by the terminal device. For example, the CSI report triggered by the DCI format 0_0 and the CSI report triggered by the DCI format 0_1 correspond to The number of beam information can be different.

The indication message included in the DCI instructs the terminal device to perform the number of beam messages included in the CSI report. The indication message included in the DCI is the content of the message contained in the DCI message field. For example, a certain field may be preset for the number of beam messages included in the DCI report.

Specifically, the indication information of the DCI may directly include the number of beam information. It can be directly indicated by the quantity indication message in DCI dedicated to the beam information. For example, if there are 4 beams, it is indicated by 2 bits.

Alternatively, the terminal device may also determine the number of beam messages according to other message fields in the DCI. For example, the CSI request message field in the DCI is used to indicate the currently used CSI reporting configuration from multiple CSI reporting configurations, and each CSI reporting configuration may include the number of beam information. The target CSI reporting configuration is obtained through this message field, and the number of beam messages is also obtained.

The number of beam messages configured by triggering the CSI report and the number of beam messages configured by high-layer signaling indicates the terminal device to perform the number of beam messages included in the CSI report. corresponding,

Can contain two sub-scenes: a beam with the largest beam information

Sub scene 1,

The number of beam messages configured by the high-level signaling is at least one beam of beam messages.

Correspondingly, the terminal device selects a value from the number of at least one beam information configured by high-layer signaling based on the DCI, and uses the selected value as the number of beam information included in the CSI report.

For example, if the candidate value of the number of beam messages configured by high-level signaling is {2, 4}, the bit message in DCI can be used to indicate whether the number of beam messages in the current CSI report is 2 or 4.

The number of bits of the bit information indicated in the DCI can be set according to the actual situation. For example, in the above example, one bit can be used to indicate which number of candidate values to select as the reported beam information quantity.

Sub-scene 2.

The number of at least one beam message configured by higher layer signaling is only the number of the largest beam message.

The terminal device may select the number of beam information included in the CSI report from 1 to the number of maximum beam information based on the number of maximum beam information and the DCI.

Method 2.

The second processing unit 51 determines the number of beam information included in the CSI report according to the transmission parameters reported by the CSI of the terminal device or the physical resources corresponding to the CSI report.

In this way, after the second processing unit 51 determines the number of beam messages included in the CSI report by the terminal device, the second communication unit 52 receives the CSI report of the terminal device according to the determined number.

The second processing unit 51 performs one of the following processes:

Determine the number of beam information included in the CSI report according to the time slot used for the CSI report of the terminal device;

Determine the number of beam information included in the CSI report according to the current number of CSI reports of the terminal device;

Determine the number of beam information included in the CSI report according to whether the CSI report of the terminal device is multiplexed and transmitted with data;

The quantity of beam information included in the CSI report is determined according to the bearer channel reported by the CSI of the terminal device.

Wherein, the determining the number of beam information included in the CSI report according to the time slot used for CSI reporting of the terminal device may specifically be: according to the index of the time slot used for CSI reporting and the CSI Calculate the reporting period to obtain the number of beam messages; or, the correspondence between the time slot and the number of beam messages can be agreed in advance between the network side and the terminal device.

For example, assuming that the time slot index is S and the CSI reporting period is T, the terminal can determine the beam information used based on whether the result obtained by n=S/T (round down) is odd or even The number L can be set to even number corresponding to L=4, odd number corresponding to L=2.

Or, on the basis of calculating n, further determine the number L of beam information used according to k=n mod N, if k=0 then L=4, otherwise L=2; where N can be a conventional integer Value, mod is the operation of taking modulus.

The determining the number of beam information included in the CSI report according to the current number of CSI reports of the terminal device includes: if the current CSI report is the n-th report, it can be determined according to the value of n The number L of the beam information. Here, n and L are both positive numbers, and the corresponding relationship can be agreed in advance between the network side and the terminal. Wherein, the CSI reporting is periodic or quasi-continuous CSI reporting.

Further, the number L of beam information can be calculated according to the preset calculation formula, the current number of reports n and the preset value N; for example, k=n mod N can be used to determine the amount of beam information used L, for example, in the obtained result, k=0 then L=4, otherwise L=2, and N is a conventional integer value.

The determining the number of beam information included in the CSI report according to whether the CSI report of the terminal device is multiplexed with the data may include: if the CSI report and the data are multiplexed in the same channel, For example, multiplexing in a physical uplink shared channel (PUSCH, Physical Uplink Shared Channel), the number of the beam information is the first quantity; if the CSI report and data are multiplexed in a different channel, that is, the CSI is independently transmitted , The number of the beam information is the second number; wherein, the first number and the second number are both integers, and the first number>the second number.

The determining of the number of beam information included in the CSI report according to the bearer channel reported by the CSI may be: assuming that there are two bearer channels, then report the first bearer signal or the second bearer channel according to the CSI, to Determine the number of corresponding beam messages.

For example, if the CSI report is carried through a physical uplink control channel (PUCCH, Physical Uplink Control CHannel), the number of beam information is a third number; if the CSI report is carried through a PUSCH, then the The number of beam information is the fourth quantity, and the third quantity> the fourth quantity.

The second processing unit 51 determines the number of beam information included in the CSI report according to one of the following physical resources corresponding to the CSI report of the terminal device: subband, BWP, and time slot.

When the physical resource is a subband, the terminal determines the number of beam information according to the subband corresponding to the CSI report. Specifically, for the amplitude information and phase information that need to be reported for the subband, the number of amplitude information and phase information of the subband can be determined according to the subband corresponding to the current CSI.

For example, for the first subband configured or the best subband selected by the terminal, the amplitude and phase information of L beams can be reported; for other subbands, the amplitude and phase information of M beams can be reported, Where M>L.

The first subband may be determined according to the number of the subband, for example, it may be the first subband among the 8 subbands identified as 0-7, that is, subband 0 is the first subband Or, it can be the first subband in a subband group, for example, there can be a total of 16 subbands that can be identified as 0-15 subbands, where the specified set of subbands is 8-15, then the first One subband can be the subband 8.

In addition, the subband with the best quality can be determined according to indicators such as transmission rate, CQI or SINR, for example, the subband with the highest transmission rate or CQI or SINR can be used as the subband with the best quality, or can also be based on the subband The size of the load is not exhaustive in this embodiment.

When the physical resource is the bandwidth part (BWP), for the beam information that needs to be reported for the BWP, the number of beam information of the BWP can be determined according to the corresponding BWP reported by the current CSI. For example, the number of beam information can be determined according to the index of BWP. The network side may pre-configure a corresponding number of beam information for each BWP.

When the physical resource is a time slot, for the beam information that needs to be reported for the time slot, the number of beam information of the time slot can be determined according to the time slot corresponding to the current CSI. For example, CSI0 is the CSI of time slot 0, and CSI1 is the CSI of time slot 1, then CSI0 and CSI1 may have different amounts of beam information. The time slot corresponding to the CSI may be a time slot for measuring the CSI, or may be a time slot where the CSI reference resource of the CSI is located.

In this embodiment, the beam information includes at least one of the following: beam vector, bandwidth amplitude information, subband amplitude information, and phase information.

，m1和m2分別對應該波束的水準垂直兩個維度，i可以表示波束的標識或者編號；寬頻幅度訊息可以表示為

，

，對應於層l和波束i在整個頻寬上的幅度係數；子帶幅度訊息可以表示為

，

，應於層l和波束i在每個子帶上的幅度係數；相位訊息可以表示為

和

，

和

分別對應兩個極化方向上的相位，對應於層l和波束i。Among them, the beam vector can be expressed as

, M1 and m2 respectively correspond to the horizontal and vertical dimensions of the beam, i can represent the identification or number of the beam; the broadband amplitude information can be expressed as

,

, Corresponding to the amplitude coefficient of layer l and beam i over the entire bandwidth; the subband amplitude information can be expressed as

,

, Corresponding to the amplitude coefficient of layer l and beam i on each subband; the phase information can be expressed as

with

,

with

Corresponding to the phase in the two polarization directions respectively, corresponding to layer 1 and beam i.

The CSI here includes at least one of CRI, RI, PMI, and CQI.

It can be seen that by adopting the above scheme, the number of beam information included in the CSI report by the terminal device can be determined according to the preset conditions; thus, the terminal device can flexibly adjust the beam included in the CSI report when performing the CSI report The number of messages can further avoid the problem of always reporting CSI according to the number of beam messages configured on the network side high-level signaling, resulting in excessive feedback signaling overhead and a large amount of uplink resources.

FIG. 6 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application. The communication device 600 shown in FIG. 6 includes a processor 610, and the processor 610 can call and run a computer program from the memory to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 6, the communication device 600 may further include a memory 620. The processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiments of the present application.

The memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.

Optionally, as shown in FIG. 6, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send messages or data to other devices, or receive other Messages or data sent by the device.

Among them, the transceiver 630 may include a transmitter and a receiver. The transceiver 530 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be a network device according to an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. Repeat again.

Optionally, the communication device 600 may specifically be a terminal device or a network device according to an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For brevity, I will not repeat them here.

7 is a schematic structural diagram of a wafer according to an embodiment of the present application. The chip 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 7, the wafer 700 may further include a memory 720. The processor 710 can call and run a computer program from the memory 720 to implement the method in the embodiments of the present application.

The memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.

Optionally, the wafer 700 may further include an input interface 730. The processor 710 can control the input interface 730 to communicate with other devices or chips. Specifically, it can obtain messages or data sent by other devices or chips.

Optionally, the wafer 700 may further include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips. Specifically, it can output messages or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, no further description is provided here.

Optionally, the wafer can be applied to the terminal equipment in the embodiments of the present application, and the wafer can implement the corresponding processes implemented by the terminal equipment in each method of the embodiments of the present application.

It should be understood that the wafers mentioned in the embodiments of the present application may also be referred to as system-level wafers, system wafers, wafer systems, or system-on-chip wafers.

FIG. 8 is a schematic block diagram of a communication system 800 provided by an embodiment of the present application. As shown in FIG. 8, the communication system 800 includes a terminal device 810 and a network device 820.

Among them, the terminal device 810 can be used to implement the corresponding function implemented by the terminal device in the above method, and the network device 820 can be used to implement the corresponding function implemented by the network device in the above method. Repeat again.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method embodiments may be completed by instructions in the form of hardware integrated logic circuits or software in the processor. The aforementioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA), or Other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly implemented and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a random storage memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically readable and writable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory. The processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It can be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable and programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache memory. By way of example but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory ( Synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (Double SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

It should be understood that the foregoing memory is exemplary but not limiting, for example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM) , DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memories in the embodiments of the present application are intended to include but are not limited to these and any other suitable types of memories.

The embodiments of the present application also provide a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method of the embodiments of the present application. For simplicity, I will not repeat them here.

Optionally, the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, for simplicity , Will not repeat them here.

An embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. This will not be repeated here.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, I will not repeat them here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, I will not repeat them here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program runs on the computer, the computer executes each method of the embodiments of the present application by the mobile terminal/terminal device For the sake of brevity, I will not repeat them here.

Persons of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and conciseness of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the unit is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or elements may be combined or may Integration into another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed on multiple network units . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone, or two or more units may be integrated into one unit.

If the function is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a storage medium, including several The instruction is used to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage media include: pen drives, mobile hard drives, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical discs, etc. can store program code Medium.

The above is only the specific implementation of this application, but the scope of protection of this application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

100: Communication system 110: network equipment 120: terminal equipment 201, 202: steps 301, 302: steps 41: The first processing unit 42: The first communication unit 51: Second processing unit 52: Second communication unit 6000: Communication equipment 610: processor 620: Memory 630: Transceiver 700: chip 710: processor 720: memory 730: Input interface 740: output interface 800: Communication system 810: terminal equipment 820: Network equipment 900: network equipment 910: processing unit 920: transceiver unit

FIG. 1 is a schematic diagram 1 of a communication system architecture provided by an embodiment of the present application;

2 is a schematic flowchart 1 of a method for reporting CSI according to an embodiment of the present invention;

3 is a second schematic flowchart of a CSI reporting method according to an embodiment of the present invention;

4 is a schematic structural diagram of a terminal device composition provided by an embodiment of the present invention;

5 is a schematic structural diagram of a network device composition provided by an embodiment of the present invention;

6 is a schematic structural diagram of a composition of a communication device according to an embodiment of the present invention;

7 is a schematic block diagram of a wafer provided by an embodiment of the present application;

FIG. 8 is a second schematic diagram of a communication system architecture provided by an embodiment of the present application.

201, 202: steps

Claims (19)

A channel status information CSI reporting method, applied to terminal equipment, including: Determine the number of beam information included in the CSI report according to at least one preset condition; perform CSI report according to the determined number of beam information; Wherein, the at least one preset condition includes at least one of the following: Trigger the DCI reported by the CSI; The transmission parameters reported by the CSI; The CSI reports the corresponding physical resources. The method according to item 1 of the patent application scope, wherein, when the at least one preset condition includes the DCI triggering the CSI report, The determining the number of beam information included in the CSI report includes one of the following: Determine the number of beam information included in the CSI report according to the wireless network temporary identifier RNTI used for CRC scrambling of the DCI; Determine the number of beam information included in the CSI report according to the DCI format of the DCI; According to the indication information included in the DCI, determine the number of beam information included in the CSI report. The method according to item 1 of the patent application scope, wherein, when the at least one preset condition includes the DCI triggering the CSI report, The determining the number of beam information included in the CSI report also includes: The number of beam information included in the CSI report is determined according to the DCI triggering the CSI report and the number of beam information configured by high-level signaling. The method according to item 3 of the patent application scope, wherein the number of beam information included in the CSI report is determined according to the DCI that triggers the CSI report and the number of beam messages configured by high-level signaling, include: Based on the DCI, a value is selected from the number of at least one beam information configured by higher layer signaling, and the selected value is used as the number of beam information included in the CSI report. The method according to any one of items 2 to 4 of the patent application scope, wherein the DCI is used to trigger aperiodic CSI reporting, or to trigger quasi-persistent CSI reporting. The method according to item 1 of the patent application scope, wherein, when the at least one preset condition includes the transmission parameter reported by the CSI, The determining the number of beam information included in the CSI report includes one of the following: Determine the number of beam information included in the CSI report according to the time slot used for CSI report; Determine the number of beam information included in the CSI report according to the current number of CSI reports; Determine the number of beam information included in the CSI report according to whether the CSI report is multiplexed and transmitted with data; The number of beam information included in the CSI report is determined according to the bearer channel reported by the CSI. The method according to item 1 of the patent application scope, wherein, when the at least one preset condition includes the physical resource corresponding to the CSI report, The determining the number of beam information included in the CSI report includes: The number of beam information included in the CSI report is determined according to one of the following physical resources corresponding to the CSI report: subband, bandwidth part BWP, and time slot. The method according to any one of the items 1 of the patent application scope, wherein the beam information includes at least one of the following: Beam vector, bandwidth amplitude information, subband amplitude information, phase information. The method according to item 1 of the patent application scope, wherein the CSI reporting according to the determined number of beam information includes: According to the determined number of beam information, the beam information in the preset codebook is determined based on the preset codebook, and the beam information is reported. A CSI reporting method applied to network equipment, including: Determining the number of beam messages included in the CSI report of the terminal device, and receiving the CSI report of the terminal device according to the determined number of beam messages. A terminal device, including: The first processing unit determines the number of beam information included in the CSI report according to at least one preset condition; The first communication unit performs CSI reporting according to the determined number of beam messages; Wherein, the at least one preset condition includes at least one of the following: Trigger the DCI reported by the CSI; The transmission parameters reported by the CSI; The CSI reports the corresponding physical resources. A network device, including: The second processing unit determines the number of beam information included in the CSI report of the terminal device; The second communication unit receives the CSI report of the terminal device according to the determined number of the beam information. The network device according to item 12 of the patent application scope, wherein the second communication unit indicates the beam information included in the CSI report to the terminal device by triggering the DCI for the CSI report quantity. The network device according to item 13 of the patent application scope, wherein the second communication unit further performs one of the following processes: The number of beam information included in the CSI report is instructed by the terminal equipment to perform the CRC scrambling of the DCI on the wireless network temporary identifier RNTI; The DCI format of the DCI is used to instruct the terminal device to perform the number of beam information included in the CSI report; Indicating the number of beam information included in the CSI report by the terminal device through the indication message included in the DCI; The number of beam information included in the CSI report is instructed to the terminal device by triggering the DCI reported by the CSI and the number of beam information configured by high-layer signaling. The network device according to item 13 or 14 of the patent application scope, wherein the DCI is used to trigger aperiodic CSI reporting, or to trigger quasi-persistent CSI reporting. The network device according to item 12 of the patent application scope, wherein the first processing unit determines that the CSI report is based on the transmission parameters reported by the CSI of the terminal device or the corresponding physical resources of the CSI report The number of beam messages included. The network device according to item 16 of the patent application scope, wherein the first processing unit performs one of the following processes: Determine the number of beam information included in the CSI report according to the time slot used for the CSI report of the terminal device; Determine the number of beam information included in the CSI report according to the current number of CSI reports of the terminal device; Determine the number of beam information included in the CSI report according to whether the CSI report of the terminal device is multiplexed and transmitted with data; The quantity of beam information included in the CSI report is determined according to the bearer channel reported by the CSI of the terminal device. The number of beam information included in the CSI report is determined according to one of the following physical resources corresponding to item 16 of the patent scope: subband, bandwidth part BWP, and time slot. The network equipment according to item 12 of the patent application scope, wherein the beam information includes at least one of the following: Beam vector, bandwidth amplitude information, subband amplitude information, phase information.

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