CN115473614A

CN115473614A - CSI reporting method and device, terminal equipment and network equipment

Info

Publication number: CN115473614A
Application number: CN202110653256.2A
Authority: CN
Inventors: 左君; 王飞; 曹昱华; 郑毅
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-12-13

Abstract

The application discloses a CSI reporting method, terminal equipment and network equipment, wherein the method comprises the following steps: the method comprises the steps that terminal equipment receives first configuration information and second configuration information sent by network equipment, wherein the first configuration information is used for configuring a first reference signal set, the second configuration information is used for configuring a second reference signal set, and the second reference signal set is a subset of the first reference signal set, wherein the first reference signal set is a reference signal set used for reporting, and the second reference signal set is a reference signal set to be measured; the terminal device sends a CSI report to the network device based on the first configuration information and the second configuration information.

Description

CSI reporting method and device, terminal equipment and network equipment

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for reporting Channel State Information (CSI), a terminal device, and a network device.

Background

In order to satisfy the low delay and high reliability of the service at the same time, the terminal device needs to send a Channel State Information (CSI) report to the network to assist the network in transmission scheduling.

In order to realize that the terminal equipment reports the CSI report, the network configures a group of reference signals for beam measurement for the terminal equipment, and the terminal equipment measures the group of reference signals configured by the network, thereby generating the CSI report according to the measurement result.

However, in a high frequency scenario, to combat path loss, the width of the beam is generally thin, and the number of beams is also large, resulting in a large overhead of reference signals for beam measurement.

Disclosure of Invention

In order to solve the above technical problems, embodiments of the present invention provide a CSI reporting method, a terminal device, a network device, a chip, and a computer-readable storage medium.

The CSI reporting method provided by the embodiment of the application comprises the following steps:

the method comprises the steps that terminal equipment receives first configuration information and second configuration information sent by network equipment, wherein the first configuration information is used for configuring a first reference signal set, the second configuration information is used for configuring a second reference signal set, and the second reference signal set is a subset of the first reference signal set, wherein the first reference signal set is a reference signal set used for reporting, and the second reference signal set is a reference signal set to be measured;

the terminal device sends a CSI report to the network device based on the first configuration information and the second configuration information.

the method comprises the steps that network equipment sends first configuration information and second configuration information to terminal equipment, wherein the first configuration information is used for configuring a first reference signal set, the second configuration information is used for configuring a second reference signal set, the second reference signal set is a subset of the first reference signal set, the first reference signal set is used for reporting, and the second reference signal set is a reference signal set to be measured;

the network equipment receives a CSI report sent by the terminal equipment, wherein the CSI report is determined by the terminal equipment based on the first configuration information and the second configuration information.

The CSI reporting apparatus provided in the embodiment of the present application is applied to a terminal device, and the apparatus includes:

a receiving unit, configured to receive first configuration information and second configuration information sent by a network device, where the first configuration information is used to configure a first reference signal set, the second configuration information is used to configure a second reference signal set, and the second reference signal set is a subset of the first reference signal set, where the first reference signal set is a reference signal set used for reporting, and the second reference signal set is a reference signal set to be measured;

a sending unit, configured to send a CSI report to the network device based on the first configuration information and the second configuration information.

The CSI reporting apparatus provided in the embodiment of the present application is applied to a network device, and the apparatus includes:

a sending unit, configured to send first configuration information and second configuration information to a terminal device, where the first configuration information is used to configure a first reference signal set, the second configuration information is used to configure a second reference signal set, and the second reference signal set is a subset of the first reference signal set, where the first reference signal set is a reference signal set used for reporting, and the second reference signal set is a reference signal set to be measured;

a receiving unit, configured to receive a CSI report sent by the terminal device, where the CSI report is determined by the terminal device based on the first configuration information and the second configuration information.

The terminal device provided by the embodiment of the application comprises: the processor is used for calling and running the computer program stored in the memory, and executing any one of the CSI reporting methods.

The network device provided by the embodiment of the application comprises: the processor is used for calling and running the computer program stored in the memory, and executing any one of the CSI reporting methods.

The chip provided by the embodiment of the application comprises: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes any one of the methods.

The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program enables a computer to execute any one of the methods.

In the technical scheme of the embodiment of the application, the network device configures two reference signal sets, namely a first reference signal set and a second reference signal set, for the terminal device, where the second reference signal set is a subset of the first reference signal set, the first reference signal set is a reference signal set used for reporting, and the second reference signal set is a reference signal set to be measured, so that the terminal device can only measure reference signals in the second reference signal set, that is, only measure a part of reference signals in the first reference signal set, and overhead of reference signals used for beam measurement is effectively reduced.

Drawings

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application;

fig. 2 is a schematic flowchart of a CSI reporting method according to an embodiment of the present application;

fig. 3 is a schematic diagram of a beam provided by an embodiment of the present application;

FIG. 4 is another schematic beam diagram provided by an embodiment of the present application;

fig. 5 is a first schematic structural diagram of a CSI reporting apparatus according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a CSI reporting apparatus according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a chip of an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

As shown in fig. 1, communication system 100 may include a terminal device 110 and a network device 120. Network device 120 may communicate with terminal device 110 over the air. Multi-service transport is supported between terminal device 110 and network device 120.

It should be understood that the embodiment of the present application is only illustrated as the communication system 100, but the embodiment of the present application is not limited thereto. That is to say, the technical solution of the embodiment of the present application may be applied to various communication systems, for example: a Long Term Evolution (LTE) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), an Internet of Things (Internet of Things, ioT) System, a narrowband Band Internet of Things (NB-IoT) System, an enhanced Machine-Type Communications (eMTC) System, a 5G communication System (also called New Radio (NR)) or a future communication System, and the like.

In communication system 100 shown in fig. 1, network device 120 may be an access network device that communicates with terminal device 110. An access network device may provide communication coverage for a particular geographic area and may communicate with terminal devices 110 (e.g., UEs) located within the coverage area.

The Network device 120 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the Network device 120 may be a relay station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a Network device in a Public Land Mobile Network (PLMN) for future Evolution, or the like.

Terminal device 110 may be any terminal device including, but not limited to, terminal devices that employ wired or wireless connections with network device 120 or other terminal devices.

For example, the terminal device 110 may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handset, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handset with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolution network, etc.

The terminal Device 110 may be used for Device-to-Device (D2D) communication.

The wireless communication system 100 may further include a core network device 130 in communication with the base station, and the core network device 130 may be a 5G core (5G core,5 gc) device, such as an Access and Mobility Management Function (AMF), an Authentication Server Function (AUSF), a User Plane Function (User upplane Function (SMF), or a Session Management Function (SMF). Alternatively, the Core network device 130 may also be an Evolved Packet Core (EPC) device of the LTE network, for example, a Session Management Function + Core Packet Gateway (SMF + PGW-C) device of the Core network. It is understood that SMF + PGW-C may perform the functions that SMF and PGW-C can perform simultaneously. In the network evolution process, the core network device may also be called by other names, or a new network entity is formed by dividing the functions of the core network, which is not limited in this embodiment of the present application.

The functional units in the communication system 100 may also establish a connection through a next generation Network (NG) interface to implement communication.

For example, the terminal device establishes an air interface connection with the access network device through the NR interface, and is used to transmit user plane data and control plane signaling; the terminal equipment can establish control plane signaling connection with the AMF through an NG interface 1 (N1 for short); an access network device, such as a next generation radio access base station (gNB), may establish a user plane data connection with a UPF through an NG interface 3 (N3 for short); the access network equipment can establish control plane signaling connection with the AMF through an NG interface 2 (N2 for short); the UPF can establish a control plane signaling connection with the SMF through an NG interface 4 (N4 for short); the UPF can interact user plane data with a data network through an NG interface 6 (N6 for short); AMF can establish control plane signaling connection with SMF through NG interface 11 (N11 for short); the SMF may establish a control plane signaling connection with the PCF via NG interface 7 (N7 for short).

Fig. 1 exemplarily shows one base station, one core network device, and two terminal devices, and optionally, the wireless communication system 100 may include a plurality of base station devices and may include other numbers of terminal devices within the coverage area of each base station, which is not limited in this embodiment of the present application.

It should be noted that fig. 1 illustrates a system to which the present application is applied by way of example, and of course, the method shown in the embodiment of the present application may also be applied to other systems. Further, the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship. It should also be understood that "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication of an association relationship. For example, a indicates B, which may indicate that a directly indicates B, e.g., B may be obtained by a; it may also mean that a indicates B indirectly, for example, a indicates C, and B may be obtained by C; it can also mean that there is an association between a and B. It should also be understood that "correspond" mentioned in the embodiments of the present application may mean that there is a direct or indirect correspondence between the two, and may also mean that there is an association relationship between the two, and may also be a relationship of indicating and being indicated, configuring and being configured, and the like. It should also be understood that "predefined" or "predefined rule" mentioned in the embodiments of the present application may be implemented by pre-saving corresponding codes, tables or other manners that may be used to indicate related information in devices (including terminal devices and network devices, for example), and the present application is not limited to the specific implementation manner thereof. Such as predefined, may refer to what is defined in the protocol. It should also be understood that, in the embodiment of the present application, the "protocol" may refer to a standard protocol in the field of communications, and may include, for example, an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in this application.

For the convenience of understanding of the technical solutions of the embodiments of the present application, the following related technologies of the embodiments of the present application are described below, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as alternatives, and all of them belong to the protection scope of the embodiments of the present application.

CSI reporting

The CSI report (CSI report) is obtained based on measurement of a Reference Signal, and the type of the Reference Signal may be Channel State Information-Reference Signal (CSI-RS), or Synchronization Signal Block (SSB), or CSI-RS + SSB. The time domain characteristics of the CSI report can be divided into three types, namely periodic, semi-persistent and non-periodic, which are described below.

Periodic CSI reporting: the periodicity and offset of the CSI report are configured through Radio Resource Control (RRC) signaling. Specifically, the terminal device receives an RRC signaling sent by the base station, and periodically transmits a CSI report on a Physical Uplink Control Channel (PUCCH) configured by the RRC signaling.

Semi-persistent CSI reporting: when a semi-persistent CSI report is transmitted on a PUCCH, media Access Control (MAC) Control Element (CE) signaling activation/deactivation is required; specifically, after the MAC CE signaling is activated, the terminal device periodically transmits the CSI report on the PUCCH resource. When a semi-persistent CSI report is transmitted on a Physical Uplink Shared Channel (PUSCH), downlink Control Information (DCI) activation/deactivation is required; specifically, after DCI activation, the terminal device periodically transmits CSI reports on PUSCH resources.

Aperiodic CSI reporting: a DCI trigger is required; specifically, after receiving the DCI triggering the aperiodic CSI report, the terminal device transmits the CSI report once on the PUSCH resource indicated by the DCI.

CSI reporting configuration

The terminal device supports 48 CSI reporting configurations (CSI-ReportConfig) at most in one serving cell, and in each CSI reporting configuration, a resource for channel measurement (i.e., resource for channel measurement) must be associated, and optionally, one or two resources for interference measurement (i.e., CSI-IM-resource for interference or nzp-CSI-RS-resource for interference) may be associated. In the CSI report configuration, a report type (reportConfigType) may be configured as a periodic CSI report, a semi-persistent CSI report, or an aperiodic CSI report, and for the periodic CSI report and the semi-persistent CSI report transmitted on the basis of a PUCCH, a period and an offset of the CSI report thereof (i.e., CSI-reportperiodiciandoffset) and a PUCCH resource used for reporting the CSI report (i.e., PUCCH-CSI-ResourceList) may be configured. For aperiodic CSI reporting, the slot offset (i.e., reportslotoffsetlt) between the DCI triggering the CSI report and the CSI report is configured. In addition, in the CSI reporting configuration, a report quantity (report quality) is also configured, and the report quantity may include one or more parameters. By way of example, the reported volume supports the following: 'cri-RI-PMI-CQI', 'cri-RI-i1', 'cri-RI-i1-CQI', 'cri-RI-CQI', 'cri-RSRP', 'cri-SINR', 'ssb-Index-RSRP', 'ssb-Index-SINR' or 'cri-RI-LI-PMI-CQI'.

In order to combat the path loss of high frequency, the transmitting end and the receiving end can improve the transmission performance by beamforming, in other words, the transmitting end transmits signals by using a transmitting beam, and the receiving end receives signals by using a receiving beam. Here, the transmission beam and the reception beam are referred to as a beam pair, and the transmission end and the reception end obtain a matched beam pair through beam training. Taking downlink beam training as an example, the network configures a Reference Signal for beam training, and the terminal device reports an index of the Reference Signal with a larger Reference Signal Receiving Power (RSRP) or Signal to Interference plus Noise Ratio (SINR) and a corresponding RSRP or SINR to the network side, so that the network side can determine a matched downlink beam. The reference signals used for downlink beam training may be CSI-RS and/or SSB.

The network side configures a set of reference signals for beam measurement, and the type of the reference signals can be CSI-RS or SSB, or CSI-RS + SSB. In addition, the network side configures the report content in the CSI report, and instructs the terminal equipment to report CRI + RSRP or SSBRI + RSRP through the report content, wherein CRI is an index of the CSI-RS, and CRI k represents the (k + 1) th CSI-RS resource in the nzp-CSI-RS-resource set configured by the network side; SSBRI is the index of SSB, and SSBRI k represents the (k + 1) th SSB resource in the CSI-SSB-resource set configured on the network side. And the terminal equipment can obtain the bit number used for reporting the CRI or the SSBRI according to the number of the CSI-RS or SSB resources configured on the network side.

In a high frequency scenario, to combat path loss, the width of the beam is usually thin, and the number of beams is also large, resulting in a large overhead of reference signals for beam measurement. Therefore, the following technical scheme of the embodiment of the application is provided.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below with specific embodiments. The above related art can be arbitrarily combined with the technical solutions of the embodiments of the present application as alternatives, which all belong to the scope of protection of the embodiments of the present application. The embodiment of the present application includes at least part of the following contents.

Fig. 2 is a schematic flowchart of a CSI reporting method provided in an embodiment of the present application, and as shown in fig. 2, the CSI reporting method includes the following steps:

step 201: the method comprises the steps that a network device sends first configuration information and second configuration information to a terminal device, the terminal device receives the first configuration information and the second configuration information sent by the network device, the first configuration information is used for configuring a first reference signal set, the second configuration information is used for configuring a second reference signal set, the second reference signal set is a subset of the first reference signal set, the first reference signal set is a reference signal set used for reporting, and the second reference signal set is a reference signal set to be measured.

Step 202: the terminal device sends a CSI report to the network device based on the first configuration information and the second configuration information, and the network device receives the CSI report sent by the terminal device.

In this embodiment, the network device may be a base station.

In the embodiment of the application, a network device sends first configuration information and second configuration information to a terminal device, where the first configuration information is used to configure a first reference signal set, the second configuration information is used to configure a second reference signal set, and the second reference signal set is a subset of the first reference signal set, where the first reference signal set is a reference signal set used for reporting, and the second reference signal set is a reference signal set to be measured. Here, the second reference signal set may be understood as a part of the reference signals in the first reference signal set.

The following describes a technical solution of an embodiment of the present application in conjunction with different implementations of a first reference signal set and a second reference signal set.

Scheme one

In this embodiment of the present application, the first configuration information includes indexes of N SSBs, and the first reference signal set includes the N SSBs, where N is a positive integer.

In some optional embodiments, the second configuration information includes indexes of K SSBs of the N SSBs, and the second set of reference signals includes the K SSBs, where K is a positive integer smaller than N.

In some optional embodiments, the second configuration information includes a first bit map, each bit in the first bit map has a corresponding relationship with one or more SSBs of the N SSBs, and a value of the bit is used to indicate whether the one or more SSBs corresponding to the bit are the reference signals to be measured.

For example: the first set of reference signals is SSB 00, SSB 01, SSB 10, SSB 11, and the second set of reference signals is SSB 00, SSB 10. The first configuration information includes indexes of 4 SSBs, which are: 00, 01, 10, 11. As an implementation manner, the second configuration information includes indexes of 2 SSBs, which are respectively: 00, 10. As another implementation manner, the second configuration information includes a first bitmap, the first bitmap includes 4 bits, the value of the 4 bits is 1010, the value of the bit is 1, which represents that the corresponding SSB is the reference signal to be measured, and the value of the bit is 0, which represents that the corresponding SSB is not the reference signal to be measured.

In this embodiment, the terminal device determines, based on the number of SSBs included in the first reference signal set, the number of bits occupied by the index of the reference signal reported in the CSI report. In some optional embodiments, the number of bits occupied by the index of the reference signal reported in the CSI report is: log2 (N).

Scheme two

In this embodiment of the present application, the first configuration information includes indexes of M channel state information-reference signal CSI-RSs, the first reference signal set includes the M CSI-RSs, and M is a positive integer.

In some optional embodiments, the second configuration information includes indexes of L CSI-RSs of the M CSI-RSs, and the second set of reference signals includes the L CSI-RSs, where L is a positive integer smaller than M.

In some optional embodiments, the second configuration information includes a second bitmap, each bit in the second bitmap has a corresponding relationship with one or more CSI-RSs of the M CSI-RSs, and a value of the bit is used to indicate whether the one or more CSI-RSs corresponding to the bit are reference signals to be measured.

For example: the first set of reference signals is { CSI-RS 00, CSI-RS 01, CSI-RS 10, CSI-RS 11}, and the second set of reference signals is { CSI-RS 00, CSI-RS 10}. The first configuration information includes indexes of 4 CSI-RSs, which are: 00, 01, 10, 11. As an implementation manner, the second configuration information includes indexes of 2 CSI-RSs, which are respectively: 00, 10. As another implementation manner, the second configuration information includes a second bitmap, the second bitmap includes 4 bits, the value of the 4 bits is 1010, the value of the bit is 1, which represents that the corresponding CSI-RS is the reference signal to be measured, and the value of the bit is 0, which represents that the corresponding CSI-RS is not the reference signal to be measured.

In this embodiment, the terminal device determines, based on the number of CSI-RSs included in the first reference signal set, the number of bits occupied by the index of the reference signal reported in the CSI report. In some optional embodiments, the number of bits occupied by the index of the reference signal reported in the CSI report is: log2 (M).

Scheme three

In this embodiment of the present application, the first configuration information includes indexes of N SSBs and indexes of M CSI-RSs, the first reference signal set includes the N SSBs and the M CSI-RSs, and N and M are positive integers.

In some optional embodiments, the second configuration information comprises at least one of:

indices of K SSBs of the N SSBs, indices of L CSI-RSs of the M CSI-RSs;

wherein the second set of reference signals includes the K SSBs and the L CSI-RSs, K being a positive integer less than N, and L being a positive integer less than M.

Here, optionally, at least some of the N SSBs and at least some of the M CSI-RSs may have a quasi-addressed relationship, and beam coverage areas corresponding to reference signals having the quasi-addressed relationship have overlapping portions.

For example: 1 SSB in the N SSBs and M CSI-RSs have an address-ready relationship. For example: 1 SSB in the N SSBs and 1 CSI-RS in the M CSI-RSs have a quasi-addressing relation.

Here, optionally, the N SSBs and the M CSI-RSs do not have any quasi-addressing relationship.

each bit in the first bitmap has a corresponding relationship with one or more SSBs in the N SSBs, and the value of the bit is used to indicate whether the one or more SSBs corresponding to the bit are reference signals to be measured;

each bit in the second bitmap has a corresponding relationship with one or more of the M CSI-RSs, and the value of the bit is used to indicate whether the one or more CSI-RSs corresponding to the bit are reference signals to be measured.

In this embodiment of the present application, the terminal device determines, based on the number of SSBs and the number of CSI-RSs included in the first reference signal set, a number of bits occupied by an index of a reference signal reported in the CSI report. In some optional embodiments, the number of bits occupied by the index of the reference signal reported in the CSI report is: log2 max (N, M).

It should be noted that the third embodiment can be understood as a combination of the first embodiment and the second embodiment.

In this embodiment of the present application, the network device sends third configuration information to the terminal device, and the terminal device receives the third configuration information sent by the network device, where the third configuration information is used to configure reporting content in a CSI report, where the reporting content includes an index of a reference signal and signal quality, and the signal quality includes at least one of: RSRP and SINR.

In some optional embodiments, the RSRP is a layer one measurement value or a layer three measurement value. Here, RSRP is a layer one measurement value, which may also be referred to as L1-RSRP; RSRP is a layer three measurement value, which may also be referred to as L3-RSRP.

In some optional embodiments, the SINR is a layer one measurement value or a layer three measurement value. Here, SINR is a layer one measurement value, which may also be referred to as L1-SINR; the SINR is a layer three measurement, which may also be referred to as L3-SINR.

In the embodiment of the present application, the terminal device measures each reference signal in the second reference signal set to obtain the signal quality of each reference signal in the second reference signal set; the terminal device determines the signal quality of each reference signal in the first reference signal set based on the signal quality of at least part of the reference signals in the second reference signal set; the terminal equipment determines at least one reference signal to be reported based on the signal quality of each reference signal in the first reference signal set; wherein the CSI report includes an index and a signal quality for each of the at least one reference signal. Further, optionally, the CSI report further includes indication information corresponding to the index, where the indication information is used to indicate that the type of the index is an index of a CSI-RS or an index of an SSB.

Here, the terminal device determines the signal quality of each reference signal in the first reference signal set based on the signal quality of at least part of the reference signals in the second reference signal set by using an AI model.

The technical solution of the embodiment of the present application is illustrated below by referring to specific application examples.

Application example 1

As shown in FIG. 3, the base station configures a first reference signal set as { CSI-RS 00, CSI-RS 01, CSI-RS 10, CSI-RS 11} through the first configuration information, and configures a second reference signal set as { CSI-RS 00, CSI-RS 10} through the second configuration information. The second set of reference signals is a subset of the first set of reference signals, the second set of reference signals being a set of reference signals to be measured.

The terminal equipment can measure the signal quality of the CSI-RS 00 and the signal quality of the CSI-RS 10, and the AI model is adopted to calculate the signal quality of the CSI-RS 01 and the signal quality of the CSI-RS 11 according to the measured signal quality. The terminal equipment selects one or more optimal reference signals from the obtained signal qualities of the 4 reference signals to report, for example, the signal qualities of the CSI-RS 00 and the CSI-RS 01 are optimal, and the terminal equipment reports indexes of the CSI-RS 00 and the CSI-RS 01 and the signal qualities to the network equipment through a CSI report. Here, the signal quality includes at least one of: L1-RSRP, L3-RSRP, L1-SINR, L3-SINR.

Application example two

As shown in fig. 4, the base station configures, through the first configuration information, the first reference signal set to be { SSB 00, SSB 01, SSB 10, SSB 11} + { CSI-RS 00, CSI-RS 01, CSI-RS 10, CSI-RS 11}, where CSI-RS 00, CSI-RS 01, CSI-RS 10, CSI-RS 11 have a quasi-co-location relationship with SSB 01, it can be understood that SSB 01 corresponds to one wider beam, and CSI-RS 00, CSI-RS 01, CSI-RS 10, and CSI-RS 11 correspond to 4 narrower beams, respectively, and these 4 narrower beams can be understood as sub-beams of the wider beam. And the base station configures a second reference signal set as { CSI-RS 00, CSI-RS 10} through second configuration information. The second set of reference signals is a subset of the first set of reference signals, the second set of reference signals being a set of reference signals to be measured.

The terminal equipment can measure the signal quality of the CSI-RS 00 and the CSI-RS 10, and the AI model is adopted to calculate the signal quality of the SSB 00, the SSB 01, the SSB 10, the SSB 11, the CSI-RS 01 and the CSI-RS 11 according to the measured signal quality. And the terminal equipment selects one or more optimal reference signals from the obtained multiple signal qualities for reporting, for example, the signal qualities of the SSB 00 and the CSI-RS 00 are optimal, and the terminal equipment reports the indexes of the SSB 00 and the CSI-RS 00 and the signal qualities to the network equipment through a CSI report. Here, the signal quality includes at least one of: L1-RSRP, L3-RSRP, L1-SINR, L3-SINR.

Application example three

The base station configures a first reference signal set to be NZP-CSI-RS-ResourceSet1 through first configuration information, wherein the NZP-CSI-RS-ResourceSet1 comprises 8 CSI-RSs, and indexes of the 8 CSI-RSs are {1000, 0001, 0110, 0111, 1100, 1011, 1010, 1111}. The base station indicates a second reference signal set through second configuration information, namely, a bitmap (bitmap) 10110010, the second reference signal set comprises 4 CSI-RSs, and indexes of the 4 CSI-RSs are {1000, 0110, 0111, 1010}.

The terminal equipment measures the signal quality of the CSI-RS with indexes of {1000, 0110, 0111 and 1010}, and calculates the signal quality of other CSI-RSs by adopting an AI model according to the measured signal quality to finally obtain the signal quality of 8 CSI-RSs. The terminal device selects an optimal reference signal or reference signals from the obtained signal qualities of the 8 CSI-RSs for reporting, for example, the CSI-RS with an index of 1000 has the optimal signal quality, and reports the index of the CSI-RS with the index of 1000 and the corresponding signal quality to the network device through the CSI report. Here, the signal quality includes at least one of: L1-RSRP, L3-RSRP, L1-SINR, L3-SINR.

Here, the terminal device determines the number of bits occupied by the index according to the number of reference signals included in the first reference signal set, the number of reference signals included in the first reference signal set is 8, the bits occupied by the index are log2 (8) =3, and the terminal device reports the index of the CSI-RS by using 3 bits, for example: and the index of the reported CSI-RS is 0001 when the terminal equipment reports 001.

Application example four

The base station configures a first reference signal set comprising SSB set1 and NZP-CSI-RS-Resourceset1 through first configuration information, wherein the SSB set1 comprises 4 SSBs, indexes of the 4 SSBs are { SSB 00, SSB 01, SSB 10 and SSB 11}, the ZP-CSI-RS-Resourceset1 comprises 4 CSI-RSs, and indexes of the 4 CSI-RSs are {00, 01, 10, 11}. And the base station configures a second reference signal set to be NZP-CSI-RS-ResourceSeset 2 through the second configuration information, wherein the NZP-CSI-RS-ResourceSeset 2 comprises 2 CSI-RSs, and the indexes of the 2 CSI-RSs are {00, 10}.

The terminal equipment measures the signal quality of the CSI-RS with the index of {00, 10}, and calculates the signal quality of other CSI-RSs and other SSBs according to the measured signal quality by adopting an AI model, so that the signal quality of 4 SSBs and 4 CSI-RSs is finally obtained. The terminal device selects an optimal reference signal or multiple reference signals from the obtained signal qualities of the 4 SSBs and the 4 CSI-RSs for reporting, for example, the SSB with an index of 01 and the CSI-RS with an index of 10 have optimal signal qualities, the terminal device reports the index of the SSB of 01 and the corresponding signal quality to the network device through a CSI report, and the index of the CSI-RS of 10 and the corresponding signal quality. Here, the signal quality includes at least one of: L1-RSRP, L3-RSRP, L1-SINR, L3-SINR.

Here, the terminal device determines the number of bits occupied by the index according to the number of reference signals included in the first reference signal set, the first reference signal set includes 4 SSBs and 4 CSI-RSs, the bit occupied by the index is log2 max (4, 4) =2, and the terminal device reports the index of the reference signal by using 2 bits.

Here, when the terminal device reports the index of the reference signal, the type of the reported index is indicated by the 1-bit indication information to be the index of the CSI-RS or the index of the SSB. For example: the value of 1 bit is 0 to indicate that the type of the index is SSB index, and the value of 1 bit is 1 to indicate that the type of the index is CSI-RS index. Table 1 below gives the contents of the CSI report.

TABLE 1

It should be noted that, the description about the reference signal in the above scheme may also be replaced by the reference signal resource, which does not affect the essence of the technical scheme of the embodiment of the present application. For example, the CSI-RS can be replaced by CSI-RS resources, and the SSB can be replaced by SSB resources.

In the above technical solution of the embodiment of the application, the network device configures two reference signal sets, that is, a first reference signal set and a second reference signal set, for the terminal device, where the second reference signal set is a subset of the first reference signal set, the first reference signal set is a reference signal set used for reporting, and the second reference signal set is a reference signal set to be measured, so that the terminal device may only measure reference signals in the second reference signal set, that is, only measure a part of reference signals in the first reference signal set, and thus, overhead of reference signals used for beam measurement is effectively reduced.

Fig. 5 is a schematic structural diagram of a CSI reporting apparatus provided in an embodiment of the present application, which is applied to a terminal device, and as shown in fig. 5, the CSI reporting apparatus includes:

a receiving unit 501, configured to receive first configuration information and second configuration information sent by a network device, where the first configuration information is used to configure a first reference signal set, the second configuration information is used to configure a second reference signal set, and the second reference signal set is a subset of the first reference signal set, where the first reference signal set is a reference signal set used for reporting, and the second reference signal set is a reference signal set to be measured;

a sending unit 502, configured to send a CSI report to the network device based on the first configuration information and the second configuration information.

In some optional embodiments, the first configuration information includes indexes of N SSBs, and the first reference signal set includes the N SSBs, where N is a positive integer.

In some optional embodiments, the second configuration information includes indexes of K SSBs of the N SSBs, and the second reference signal set includes the K SSBs, where K is a positive integer smaller than N.

In some optional embodiments, the apparatus further comprises: a determining unit 503, configured to determine, based on the number of SSBs included in the first reference signal set, a number of bits occupied by an index of a reference signal reported in the CSI report.

In some optional embodiments, the number of bits occupied by the index of the reference signal reported in the CSI report is: log2 (N).

In some optional embodiments, the first configuration information includes indexes of M channel state information-reference signals, CSI-RSs, and the first reference signal set includes the M CSI-RSs, where M is a positive integer.

In some optional embodiments, the second configuration information includes indexes of L CSI-RSs of the M CSI-RSs, and the second set of reference signals includes the L CSI-RSs, where L is a positive integer less than M.

In some optional embodiments, the apparatus further comprises: a determining unit 503, configured to determine, based on the number of CSI-RSs included in the first reference signal set, a bit number occupied by an index of a reference signal reported in the CSI report.

In some optional embodiments, the number of bits occupied by the index of the reference signal reported in the CSI report is: log2 (M).

In some optional embodiments, the first configuration information includes indexes of N SSBs and indexes of M CSI-RSs, the first reference signal set includes the N SSBs and the M CSI-RSs, and N and M are positive integers.

indices of K SSBs of the N SSBs, indices of L CSI-RSs of the M CSI-RSs;

In some optional embodiments, the apparatus further comprises: a determining unit 503, configured to determine, based on the number of SSBs and the number of CSI-RSs included in the first reference signal set, a number of bits occupied by an index of a reference signal reported in the CSI report.

In some optional embodiments, the number of bits occupied by the index of the reference signal reported in the CSI report is: log2 max (N, M).

In some optional embodiments, the receiving unit 501 is further configured to receive third configuration information sent by the network device, where the third configuration information is used to configure reporting content in a CSI report, where the reporting content includes an index of a reference signal and a signal quality, and the signal quality includes at least one of: reference signal received power, RSRP, signal to interference plus noise ratio, SINR.

In some optional embodiments, the RSRP is a layer one measurement value or a layer three measurement value; the SINR is a layer one measurement value or a layer three measurement value.

In some optional embodiments, the apparatus further comprises:

a measuring unit, configured to measure each reference signal in the second reference signal set to obtain a signal quality of each reference signal in the second reference signal set;

a determining unit, configured to determine a signal quality of each reference signal in the first reference signal set based on signal qualities of at least some reference signals in the second reference signal set; determining at least one reference signal to be reported based on the signal quality of each reference signal in the first reference signal set;

wherein the CSI report includes an index and a signal quality for each of the at least one reference signal.

In some optional embodiments, the CSI report further includes indication information corresponding to the index, the indication information indicating that the type of the index is an index of a CSI-RS or an index of an SSB.

Those skilled in the art will understand that the implementation functions of each unit in the CSI reporting apparatus shown in fig. 5 can be understood by referring to the related description of the foregoing method. The functions of the units in the CSI reporting apparatus shown in fig. 5 may be implemented by a program running on a processor, or may be implemented by specific logic circuits.

Fig. 6 is a schematic structural component diagram of a CSI reporting apparatus provided in an embodiment of the present application, and is applied to a network device, as shown in fig. 6, the CSI reporting apparatus includes:

a sending unit 601, configured to send first configuration information and second configuration information to a terminal device, where the first configuration information is used to configure a first reference signal set, the second configuration information is used to configure a second reference signal set, and the second reference signal set is a subset of the first reference signal set, where the first reference signal set is a reference signal set used for reporting, and the second reference signal set is a reference signal set to be measured;

a receiving unit 602, configured to receive a CSI report sent by the terminal device, where the CSI report is determined by the terminal device based on the first configuration information and the second configuration information.

In some optional embodiments, the first configuration information includes indexes of M CSI-RSs, and the first reference signal set includes the M CSI-RSs, where M is a positive integer.

indices of K SSBs of the N SSBs, indices of L CSI-RSs of the M CSI-RSs;

wherein the second set of reference signals includes the K SSBs and the L CSI-RSs, K is a positive integer less than N, and L is a positive integer less than M.

each bit in the second bit map has a corresponding relationship with one or more CSI-RSs in the M CSI-RSs, and the value of the bit is used for indicating whether the one or more CSI-RSs corresponding to the bit is a reference signal to be measured or not.

In some optional embodiments, the sending unit 601 is further configured to send third configuration information to the terminal device, where the third configuration information is used to configure reporting content in a CSI report, where the reporting content includes an index of a reference signal and a signal quality, and the signal quality includes at least one of: RSRP and SINR.

In some optional embodiments, the CSI report comprises an index and a signal quality for each of the at least one reference signal.

Those skilled in the art should understand that the implementation functions of each unit in the CSI reporting apparatus shown in fig. 6 can be understood by referring to the related description of the foregoing method. The functions of the units in the CSI reporting apparatus shown in fig. 6 may be implemented by a program running on a processor, or may be implemented by specific logic circuits.

Fig. 7 is a schematic structural diagram of a communication device 700 according to an embodiment of the present application. The communication device may be a terminal device or a network device, and the communication device 700 shown in fig. 7 includes a processor 710, and the processor 710 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 7, the communication device 700 may further include a memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.

Optionally, as shown in fig. 7, the communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, and in particular, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 730 may include a transmitter and a receiver, among others. The transceiver 730 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 700 may specifically be a network device in the embodiment of the present application, and the communication device 700 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 700 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 700 may implement a corresponding process implemented by the mobile terminal/terminal device in each method according to this embodiment, which is not described herein again for brevity.

Fig. 8 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 800 shown in fig. 8 includes a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 8, chip 800 may further include a memory 820. From the memory 820, the processor 810 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

Optionally, the chip 800 may further include an input interface 830. The processor 810 can control the input interface 830 to communicate with other devices or chips, and in particular, can obtain information or data transmitted by other devices or chips.

Optionally, the chip 800 may further include an output interface 840. The processor 810 can control the output interface 840 to communicate with other devices or chips, and in particular, can output information or data to other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A 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 connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and combines hardware thereof to complete the steps of the method.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), synchronous Link DRAM (SLDRAM), direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment 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 in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instruction enables the computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instruction causes the computer to execute a corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

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

It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

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

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

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

The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for reporting CSI (channel State information), which is characterized by comprising the following steps:

2. The method of claim 1, wherein the first configuration information comprises indexes of N SSBs, and wherein the first set of reference signals comprises the N SSBs, where N is a positive integer.

3. The method of claim 2, wherein the second configuration information comprises indexes of K SSBs of the N SSBs, wherein the second set of reference signals comprises the K SSBs, and wherein K is a positive integer smaller than N.

4. The method of claim 2, wherein the second configuration information comprises a first bitmap, each bit in the first bitmap has a corresponding relationship with one or more SSBs in the N SSBs, and a value of the bit is used to indicate whether the one or more SSBs to which the bit corresponds are reference signals to be measured.

5. The method of claim 2, further comprising:

and the terminal equipment determines the bit number occupied by the index of the reference signal reported in the CSI report based on the number of SSBs included in the first reference signal set.

6. The method of claim 5, wherein the number of bits occupied by the index of the reference signal reported in the CSI report is: log2 (N).

7. The method of claim 1, wherein the first configuration information comprises indexes of M channel state information-reference signals (CSI-RSs), wherein the first reference signal set comprises the M CSI-RSs, and wherein M is a positive integer.

8. The method of claim 7, wherein the second configuration information comprises indexes of L CSI-RSs of the M CSI-RSs, wherein the second set of reference signals comprises the L CSI-RSs, and wherein L is a positive integer smaller than M.

9. The method of claim 7, wherein the second configuration information comprises a second bitmap, each bit in the second bitmap has a corresponding relationship with one or more CSI-RSs of the M CSI-RSs, and a value of the bit is used to indicate whether the one or more CSI-RSs corresponding to the bit are reference signals to be measured.

10. The method of claim 7, further comprising:

and the terminal equipment determines the bit number occupied by the index of the reference signal reported in the CSI report based on the number of CSI-RSs in the first reference signal set.

11. The method of claim 10, wherein the number of bits occupied by the index of the reference signal reported in the CSI report is: log2 (M).

12. The method of claim 1, wherein the first configuration information comprises indexes of N SSBs and indexes of M CSI-RSs, wherein the first set of reference signals comprises the N SSBs and the M CSI-RSs, and wherein N and M are positive integers.

13. The method of claim 12, wherein the second configuration information comprises at least one of:

indices of K SSBs of the N SSBs, indices of L CSI-RSs of the M CSI-RSs;

14. The method of claim 12, wherein the second configuration information comprises at least one of:

15. The method of claim 12, further comprising:

and the terminal equipment determines the bit number occupied by the index of the reference signal reported in the CSI report based on the number of SSBs and the number of CSI-RSs in the first reference signal set.

16. The method of claim 15, wherein the number of bits occupied by the index of the reference signal reported in the CSI report is: log2 max (N, M).

17. The method according to any one of claims 1 to 16, further comprising:

the terminal device receives third configuration information sent by the network device, where the third configuration information is used to configure reporting content in a CSI report, where the reporting content includes an index of a reference signal and signal quality, and the signal quality includes at least one of: reference signal received power, RSRP, signal to interference plus noise ratio, SINR.

18. The method of claim 17,

the RSRP is a layer one measurement value or a layer three measurement value;

the SINR is a layer one measurement value or a layer three measurement value.

19. The method of claim 17, further comprising:

the terminal device measures each reference signal in the second reference signal set to obtain the signal quality of each reference signal in the second reference signal set;

the terminal device determines the signal quality of each reference signal in the first reference signal set based on the signal quality of at least part of the reference signals in the second reference signal set;

the terminal equipment determines at least one reference signal to be reported based on the signal quality of each reference signal in the first reference signal set;

20. The method of claim 19, wherein the CSI report further comprises indication information corresponding to the index, and wherein the indication information indicates that the type of the index is an index of CSI-RS or an index of SSB.

21. A method for reporting CSI (channel State information), which is characterized by comprising the following steps:

22. The method of claim 21, wherein the first configuration information comprises indexes of N SSBs, wherein the first set of reference signals comprises the N SSBs, and wherein N is a positive integer.

23. The method of claim 22, wherein the second configuration information comprises indexes of K SSBs of the N SSBs, wherein the second set of reference signals comprises the K SSBs, and wherein K is a positive integer smaller than N.

24. The method of claim 22, wherein the second configuration information comprises a first bitmap, each bit in the first bitmap has a corresponding relationship with one or more SSBs of the N SSBs, and a value of the bit is used to indicate whether the one or more SSBs corresponding to the bit are the reference signals to be measured.

25. The method of claim 21, wherein the first configuration information comprises indexes of M CSI-RSs, wherein the first set of reference signals comprises the M CSI-RSs, and wherein M is a positive integer.

26. The method of claim 25, wherein the second configuration information comprises indices of L CSI-RSs of the M CSI-RSs, wherein the second set of reference signals comprises the L CSI-RSs, and wherein L is a positive integer smaller than M.

27. The method of claim 25, wherein the second configuration information comprises a second bitmap, each bit in the second bitmap has a corresponding relationship with one or more CSI-RSs of the M CSI-RSs, and a value of the bit is used to indicate whether the one or more CSI-RSs corresponding to the bit are reference signals to be measured.

28. The method of claim 21, wherein the first configuration information comprises indexes of N SSBs and indexes of M CSI-RSs, wherein the first set of reference signals comprises the N SSBs and the M CSI-RSs, and wherein N and M are positive integers.

29. The method of claim 28, wherein the second configuration information comprises at least one of:

indices of K SSBs of the N SSBs, indices of L CSI-RSs of the M CSI-RSs;

30. The method of claim 28, wherein the second configuration information comprises at least one of:

31. The method of any one of claims 21 to 30, further comprising:

the network device sends third configuration information to the terminal device, where the third configuration information is used to configure reporting content in a CSI report, where the reporting content includes an index of a reference signal and signal quality, and the signal quality includes at least one of: RSRP and SINR.

32. The method of claim 31,

the RSRP is a layer one measurement value or a layer three measurement value;

the SINR is a layer one measurement value or a layer three measurement value.

33. The method of claim 31, wherein the CSI report comprises an index and a signal quality for each of at least one reference signal.

34. The method of claim 33, wherein the CSI report further comprises indication information corresponding to the index, and wherein the indication information indicates that the type of the index is an index of CSI-RS or an index of SSB.

35. A CSI reporting apparatus, applied to a terminal device, the apparatus comprising:

36. A CSI reporting apparatus, applied to a network device, the apparatus comprising:

37. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and execute the computer program stored in the memory, performing the method of any of claims 1 to 20.

38. A network device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 21 to 34.

39. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any of claims 1 to 20, or the method of any of claims 21 to 34.

40. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 20 or the method of any one of claims 21 to 34.