CN114982333A

CN114982333A - CSI reporting and receiving method, device, terminal equipment and network equipment

Info

Publication number: CN114982333A
Application number: CN202080093472.XA
Authority: CN
Inventors: 陈文洪; 黄莹沛
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-02-26
Filing date: 2020-02-26
Publication date: 2022-08-30
Also published as: WO2021168709A1

Abstract

The embodiment of the application provides a CSI reporting and receiving method, a device, a terminal device and a network device, wherein the method comprises the following steps: the method comprises the steps that terminal equipment determines a plurality of CSI corresponding to a first CSI reporting configuration, wherein the CSI is determined based on different channel assumptions and/or interference assumptions, and each CSI in the CSI comprises at least one of the following information: CRI, RI, PMI, CQI, LI; and the terminal equipment reports the CSI.

Description

CSI reporting and receiving method, device, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to a method, a device, a terminal device and a network device for reporting and receiving Channel State Information (CSI).

Background

In order for the network device to perform reasonable scheduling, the terminal device needs to report CSI so that the network device can determine the scheduling information of the terminal device. The terminal device reports the CSI based on the CSI reporting configuration configured by the network device, and the current CSI reporting configuration cannot obtain the CSI under the condition of multiple Transmission/reception Point (TRP) joint Transmission, that is, each CSI reporting configuration can only be used for obtaining the CSI under the condition of one TRP Transmission, so that the network device cannot accurately determine the scheduling information of the terminal device under the condition of multiple TRP joint Transmission.

Disclosure of Invention

The embodiment of the application provides a CSI reporting and receiving method, a device, a terminal device and a network device.

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

the terminal equipment determines a plurality of CSI corresponding to a first CSI reporting configuration, wherein the CSI is determined based on different channel hypotheses and/or interference hypotheses, and each CSI in the CSI comprises at least one of the following information: CSI-RS Resource indication information (CRI), Rank indication information (RI), Precoding Matrix indication information (PMI), Channel Quality indication information (CQI), Layer indication information (LI);

and the terminal equipment reports the CSI.

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

the method includes that a network device sends a first CSI reporting configuration to a terminal device, the first CSI reporting configuration is used for the terminal device to report a plurality of CSI corresponding to the first CSI reporting configuration, the CSI is determined based on different channel hypotheses and/or interference hypotheses, and each CSI in the CSI comprises at least one of the following information: CRI, RI, PMI, CQI, LI;

the network device receives the multiple CSIs.

The CSI reporting apparatus provided in the embodiment of the present application includes:

a determining unit, configured to determine multiple CSIs corresponding to a first CSI reporting configuration, where the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, and each CSI in the multiple CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI;

and the reporting unit is used for reporting the CSI.

The CSI receiving apparatus provided in the embodiment of the present application includes:

a sending unit, configured to send a first CSI reporting configuration to a terminal device, where the first CSI reporting configuration is used for the terminal device to report multiple CSIs corresponding to the first CSI reporting configuration, and the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, where each CSI in the multiple CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI;

a receiving unit, configured to receive the multiple CSIs.

The terminal device provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the CSI reporting method.

The network equipment provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the CSI receiving method.

The chip provided by the embodiment of the application is used for realizing the CSI reporting method or the CSI receiving method.

Specifically, the chip includes: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the CSI reporting method or the CSI receiving method.

The computer-readable storage medium provided in the embodiments of the present application is configured to store a computer program, where the computer program enables a computer to execute the CSI reporting method or the CSI receiving method.

The computer program product provided by the embodiment of the present application includes a computer program instruction, and the computer program instruction enables a computer to execute the CSI reporting method or the CSI receiving method.

When the computer program provided by the embodiment of the application runs on a computer, the computer is enabled to execute the CSI reporting method or the CSI receiving method.

By the technical scheme, the terminal equipment can report a plurality of CSI based on different channel hypotheses and/or interference hypotheses, so that the network equipment can accurately determine the scheduling information of the terminal equipment under the condition of multi-TRP joint transmission, and the downlink transmission efficiency is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

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

fig. 2-1 is a first schematic diagram of downlink non-coherent transmission provided in an embodiment of the present application;

fig. 2-2 is a schematic diagram of downlink non-coherent transmission provided in the embodiment of the present application;

fig. 2-3 are schematic diagrams three of downlink non-coherent transmission provided in the embodiment of the present application;

fig. 3 is a schematic diagram of CSI reporting manners with different periodicities according to an embodiment of the present application;

fig. 4 is a schematic flowchart of a CSI reporting method provided in an embodiment of the present application;

fig. 5-1 is a schematic diagram of multiple CSIs using different interference measurement resources according to an embodiment of the present disclosure;

fig. 5-2 is a schematic diagram of multiple CSIs provided in the embodiment of the present application with different interference hypotheses;

fig. 5-3 are schematic diagrams of multiple CSIs using different interference measurement resources according to an embodiment of the present disclosure;

fig. 5-4 are diagrams of different channel measurement resources for multiple CSIs provided by embodiments of the present application;

fig. 6 is a schematic flowchart of a CSI receiving method according to an embodiment of the present application;

fig. 7 is a schematic structural composition diagram of a CSI reporting apparatus according to an embodiment of the present application;

fig. 8 is a schematic structural component diagram of a CSI receiving apparatus according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a chip of an embodiment of the present application;

fig. 11 is a schematic block diagram of a communication system according to 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.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD), a system, a 5G communication system, a future communication system, or the like.

Illustratively, a communication system 100 applied in the embodiment of the present application is 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 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Optionally, the Network device 110 may be an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the Network device may be a mobile switching center, a relay station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a future communication system, and the like.

The communication system 100 also includes at least one terminal 120 located within the coverage area of the network device 110. As used herein, "terminal" includes, but is not limited to, connection via a wireline, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a Digital cable, a direct cable connection; and/or another data connection/network; and/or via a Wireless interface, such as for a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal that is arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal can refer to an access terminal, User Equipment (UE), a subscriber unit, a subscriber station, mobile, remote station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

Optionally, a Device to Device (D2D) communication may be performed between the terminals 120.

Alternatively, the 5G communication system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

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

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal 120 having a communication function, and the network device 110 and the terminal 120 may be the specific devices described above and are not described again here; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that 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 related objects are in an "or" relationship.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions related to the embodiments of the present application are described below.

Downlink non-coherent transmission

Non-coherent transmission of downlink and uplink based on multiple TRPs is introduced in NR systems. The backhaul (backhaul) connection between the TRPs may be ideal or non-ideal, information interaction between the TRPs under the ideal backhaul can be performed rapidly and dynamically, and information interaction between the TRPs under the non-ideal backhaul can be performed only quasi-statically due to the larger time delay. In the Downlink non-coherent transmission, multiple TRPs may use different Physical Downlink Control Channels (PDCCHs) to independently schedule transmission of multiple Physical Downlink Shared Channels (PDSCHs) of one terminal device, and multiple TRPs may also use the same PDCCH to schedule transmission of multiple PDSCHs of one terminal device (only for the case of ideal backhaul), where data of different TRPs use different transmission layers.

For downlink transmission scheduled with multiple PDCCHs, the scheduled PDSCHs may be transmitted in the same time slot or different time slots. The terminal device needs to support simultaneous reception of PDCCH and PDSCH from different TRPs. When the terminal device feeds back the positive Acknowledgement (ACK)/Negative Acknowledgement (NACK) and the CSI, the ACK/NACK and the CSI may be fed back to different TRPs (as shown in fig. 2-1) for transmitting corresponding PDSCHs respectively, or may be combined and reported to one TRP (as shown in fig. 2-2). The former can be applied to two scenes of ideal backhaul and non-ideal backhaul, and the latter can only be applied to the scene of ideal backhaul. Downlink Control Information (DCI) transmitted by different TRPs for scheduling the PDSCH may be carried by different Control Resource sets (CORESET), that is, the network device configures multiple CORESETs, and each TRP is scheduled by using its own CORESET, that is, different TRPs may be distinguished by the CORESET. For example, the network device may configure one index for each CORESET, with different indices corresponding to different TRPs. When the terminal device feeds back the CSI, the CSI corresponding to each TRP needs to be fed back respectively. The CSI includes RI, PMI, CQI, and other contents, and may be used for scheduling downlink transmission of each TRP.

For multiple TRP downlink transmission with single PDCCH scheduling, the same DCI can schedule multiple transmission layers from different TRPs, see fig. 2-3. Wherein, the Transmission layers from different TRPs use Demodulation Reference Signal (DMRS) ports in different CDM groups, and use different Transmission Configuration Indicator (TCI) states. The network device needs to indicate DMRS ports from different CDM groups and TCI states respectively corresponding to different CDM groups in one DCI, so as to support different DMRS ports to transmit using different beams. In this case, HARQ-ACK feedback and CSI reporting may reuse mechanisms in existing protocols. This scheme can only be used in the ideal backhaul scenario.

Downlink CSI reporting

In order for the network device to perform reasonable scheduling, the terminal device needs to feed back downlink CSI, so that the network device determines scheduling information of the terminal device, such as the number of transmission layers, a precoding matrix, a transmission beam, a modulation and coding scheme, and the like. Specifically, the CSI reporting of the terminal device is performed based on the CSI reporting configuration indicated by the network device, and both the uplink resource used by the terminal device to report the CSI and the downlink reference signal used to perform the CSI measurement are indicated by the CSI reporting configuration. Each CSI report configuration corresponds to one CSI report, and each CSI report may include information such as CRI, RI, PMI, CQI, and the like. Wherein,

■ CRI is used for determining CSI-RS resources currently used for channel Measurement and Interference Measurement Resources (IMR) currently used for Interference Measurement from a plurality of CSI-RS resources;

■ RI for reporting recommended transmission layer number;

■ PMI is used to determine the recommended precoding matrix from the predefined codebook;

the ■ CQI is used to report the current channel quality and can be determined based on the Signal to Interference plus Noise Ratio (SINR) estimated by the terminal device. The Channel part in the SINR is determined based on a non-zero power Channel State Information Reference Signal (CSI-RS) resource configured by the network equipment and used for Channel Measurement, and the Interference part is determined based on a Channel State Information Interference Measurement (CSI-IM) resource or a non-zero power CSI-RS resource configured by the network equipment and used for Interference Measurement. The CQI is calculated based on the reported RI and PMI.

The CSI reporting of the terminal device may have three periodic reporting modes: periodic CSI, quasi-persistent CSI, and aperiodic CSI. As shown in fig. 3. The periodic CSI is transmitted on a Physical Uplink Control Channel (PUCCH), the CSI reporting configuration is configured by Radio Resource Control (RRC) signaling, and the terminal device periodically reports the CSI after receiving the corresponding RRC signaling configuration. The quasi-persistent CSI may be transmitted on a PUCCH or a Physical Uplink Shared Channel (PUSCH), where a CSI reporting configuration corresponding to the CSI transmitted on the PUCCH is preconfigured by RRC signaling and activated or deactivated by Media Access Control (MAC) layer signaling, and the CSI reporting configuration corresponding to the CSI transmitted on the PUSCH is dynamically indicated (activated or deactivated) by DCI signaling. After receiving an activation signaling configured by the network equipment, the terminal equipment periodically transmits CSI on a PUCCH or PUSCH until the terminal equipment stops reporting after receiving a deactivation signaling. The CSI reporting configuration corresponding to the aperiodic CSI reporting is also pre-configured through RRC signaling, partial configuration in the CSI reporting configuration can be activated through MAC layer signaling, and the CSI reporting configuration used for CSI reporting is indicated through CSI trigger signaling in the DCI. And after receiving the CSI trigger signaling, the terminal equipment reports the corresponding CSI on the scheduled PUSCH at one time according to the indicated CSI reporting configuration.

When the number of bits carried in one CSI is large, in order to preferentially transmit important CSI information, one CSI may be divided into two parts (part). For different types of codebooks, CSI Part 1(CSI Part 1) and CSI Part 2(CSI Part 2) contain CSI information as shown in table 1 below. The bit number of the CSI part 1 is fixed and is used for carrying a small amount of important information such as RI, CQI and the like; the bit number of the CSI part 2 is determined according to the CSI part 1 and is used for carrying information with a large number of bits, such as PMI. When the code rate of an uplink channel (such as PUSCH or PUCCH) carrying CSI exceeds a certain value, the terminal device needs to discard some information in CSI portion 2 to ensure the transmission performance of the uplink channel (at least the code rate is within a reasonable range). Specifically, the information of the CSI component 1 is not discarded, and the CSI component 2 corresponding to the CSI with the lower priority is discarded in the CSI component 2 according to the priority reported by the CSI. The priority of CSI reporting is judged according to the periodicity of CSI, the content of CSI reporting, the carrier corresponding to CSI reporting and the ID of CSI reporting configuration.

TABLE 1

As can be seen from the above technology, the terminal device reports one CSI for each CSI reporting configuration, the CSI is determined based on the channel measurement resource and the interference measurement resource configured by the network device, and one CSI can only be used to obtain channel information of one TRP. For example, the terminal device may obtain the CSI of the TRP1 alone by using the CSI reporting configuration 1, and obtain the CSI of the TRP2 alone by using the CSI reporting configuration 2. However, in a multiple TRP joint transmission scheme, data of two TRPs may be transmitted on overlapping PDSCH, in which case determining CSI of one TRP requires considering interference from the other TRP. In the above scheme, the terminal device of the CSI reporting mechanism only reports the respective CSI of each TRP, and the network device cannot accurately determine the scheduling information (such as a transmission beam, the number of transmission layers, a precoding matrix, and an MCS) of the terminal device under the condition of multi-TRP joint transmission. Therefore, the following technical solutions are proposed in the embodiments of the present application, and it should be noted that "a plurality of" in the embodiments of the present application means "at least two" or "two or more".

Fig. 4 is a schematic flow chart of a CSI reporting method provided in an embodiment of the present application, and as shown in fig. 4, the method includes the following steps:

step 401: the terminal equipment determines a plurality of CSI corresponding to a first CSI reporting configuration, wherein the CSI is determined based on different channel hypotheses and/or interference hypotheses, and each CSI in the CSI comprises at least one of the following information: CRI, RI, PMI, CQI, LI.

In an embodiment of the present application, each CSI in the multiple CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI. The following describes types of information included in the CSI.

1) In an optional manner of the present application, the multiple CSIs include the same information type. Here, the types of information contained in different CSI in the multiple CSIs are the same, i.e., different CSIs contain the same information field.

Further, optionally, the information type included in each CSI in the multiple CSIs specifically:

CRI, RI, PMI, CQI; or,

CRI, RI, PMI, CQI, LI; or,

CRI, RI, CQI; or,

RI, PMI, CQI; or,

RI, PMI, CQI, LI; or,

RI、CQI。

2) in another optional manner of the present application, different CSI in the multiple CSIs may contain different types of information.

For example: the multiple CSIs include 2 CSIs, wherein one CSI includes one of the above information types, and another CSI may include only a CQI. For example, one CSI contains RI, PMI and CQI, and the other CSI only contains CQI, but the two CQIs are determined based on different channel assumptions and/or interference assumptions.

In an embodiment of the present application, the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, wherein the channel hypotheses are used to determine which resources are used as channel measurements. The interference hypothesis is used to determine which resources are measured for interference.

Which is described in detail below.

■ in an alternative form of the present application, the multiple CSIs are determined based on different interference hypotheses. The plurality of CSI includes a first CSI and a second CSI; wherein the first CSI and the second CSI are determined based on different interference measurement resources.

Further, optionally, the interference measurement resource corresponding to the first CSI includes a first non-zero power CSI-RS resource, and the interference measurement resource corresponding to the second CSI does not include the first non-zero power CSI-RS resource; the first non-zero power CSI-RS resource is used for interference measurement. Here, the non-zero power CSI-RS resource for interference measurement is included in a CSI resource configuration (CSI-resource setting) for interference measurement.

For example: as shown in fig. 5-1, the measurement resources of the first CSI include: a non-zero power CSI-RS resource 0 for channel measurement, a CSI-IM resource 0 for interference measurement, and a non-zero power CSI-RS resource 1 for interference measurement; the measurement resources of the second CSI include: a non-zero power CSI-RS resource 0 for channel measurement and a CSI-IM resource 2 for interference measurement. At this time, the non-zero power CSI-RS resource 1 for interference measurement may be used to measure interference from another TRP, so that the measurement result of the first CSI considers interference between TRPs, while the measurement result of the second CSI considers only transmission of a single TRP.

Further, after the terminal device reports the first CSI and the second CSI, the network device may determine which CSI is used to obtain the scheduling information according to the scheduling result (i.e., whether the transmission resources between the two TRPs coincide with each other), so as to obtain a more accurate scheduling result and improve the throughput of downlink transmission.

■ in an alternative form of the present application, the multiple CSIs are determined based on different channel hypotheses and interference hypotheses. The multiple CSI comprises a third CSI and a fourth CSI; wherein the third CSI is determined based on the following assumptions: taking a channel obtained by measurement on the second non-zero power CSI-RS resource as interference to carry out CSI measurement; the fourth CSI is determined based on the following assumptions: not taking a channel measured on the second non-zero power CSI-RS resource as interference; the second non-zero power CSI-RS resource is used for channel measurement. Here, the non-zero power CSI-RS resource for channel measurement is included in a CSI resource configuration (CSI-resource setting) for channel measurement.

Further, the second non-zero power CSI-RS resource may be determined by one of:

A) the second non-zero power CSI-RS resource is a non-zero power CSI-RS resource configured in a second CSI reporting configuration, and the second CSI reporting configuration and the first CSI reporting configuration have an association relation.

For example: as shown in fig. 5-2, the measurement resources configured in the first CSI reporting configuration include: a non-zero power CSI-RS resource 0 for channel measurement and a CSI-IM resource 0 for interference measurement. The measurement resources configured in the second CSI reporting configuration include: a non-zero power CSI-RS resource 1 used for channel measurement and a CSI-IM resource 1 used for interference measurement. Wherein channel measurement of the fourth CSI is based on the non-zero power CSI-RS resource 0, and interference measurement is based on the CSI-IM resource 0; channel measurement of the third CSI is based on the non-zero power CSI-RS resource 0, and interference measurement is based on the non-zero power CSI-RS resource 1 and the CSI-IM resource 0. The association relationship between the second CSI reporting configuration and the first CSI reporting configuration may be notified to the terminal device in advance through a high-level signaling, for example, an ID of the second CSI reporting configuration is indicated in configuration information of the first CSI reporting configuration. For example, the second CSI reporting configuration may be used for CSI measurement of another TRP, and the terminal device uses a channel measurement result of the other TRP as interference when measuring the third CSI, so that the measurement result of the third CSI considers interference between TRPs, and the measurement result of the fourth CSI only considers transmission of a single TRP.

B) The second non-zero power CSI-RS resource is a non-zero power CSI-RS resource configured in the first CSI reporting configuration, and the non-zero power CSI-RS resource is not used for channel measurement corresponding to the third CSI.

For example: as shown in fig. 5-3, the measurement resources configured in the first CSI reporting configuration include: the channel measurement method comprises the following steps of non-zero power CSI-RS resource 0 used for channel measurement, non-zero power CSI-RS resource 1 used for channel measurement, CSI-IM resource 0 used for interference measurement and CSI-IM resource 1 used for interference measurement. Wherein channel measurement of the fourth CSI is based on the non-zero power CSI-RS resource 1, and interference measurement is based on the CSI-IM resource 1; channel measurement of the third CSI is based on the non-zero power CSI-RS resource 0, and interference measurement is based on the non-zero power CSI-RS resource 1 and the CSI-IM resource 0. The non-zero power CSI-RS resource set used for channel measurement in the first CSI reporting configuration includes multiple CSI-RS resources (such as non-zero power CSI-RS resource 0 and non-zero power CSI-RS resource 1), where the CSI-RS resource corresponding to the CRI included in the third CSI is used for channel measurement of the third CSI, and other CSI-RS resources in the non-zero power CSI-RS resource set are not used for channel measurement of the third CSI, so that a channel measured on one or more CSI-RS resources in other CSI-RS resources may be used as interference for CSI measurement. In this way, the first CSI reporting configuration may include another non-zero power CSI-RS resource, where the TRP is used for measuring a channel, for example, the first CSI reporting configuration includes two non-zero power CSI-RS resources, and the two non-zero power CSI-RS resources correspond to the two TRPs, respectively. When measuring the third CSI, the terminal device takes the channel measurement result of another TRP as interference, so that the measurement result of the third CSI considers the interference among the TRPs, and the measurement result of the fourth CSI only considers the transmission of a single TRP.

Further, after the terminal device reports the third CSI and the fourth CSI, the network device may determine which CSI is used to obtain the scheduling information according to the scheduling result (i.e., whether transmission resources between two TRPs coincide with each other), so as to obtain a more accurate scheduling result and improve the throughput of downlink transmission.

■ in an alternative form of the present application, the multiple CSIs are determined based on different channel hypotheses. The multiple CSIs comprise a fifth CSI and a sixth CSI; wherein the fifth CSI and the sixth CSI are determined based on different channel measurement resources.

Further, optionally, the fifth CSI comprises a first CRI, and the sixth CSI comprises a second CRI; wherein information in the fifth CSI other than the first CRI is determined based on the following assumptions: taking the CSI-RS resource corresponding to the first CRI as a channel measurement resource; information in the sixth CSI other than the second CRI is determined based on the following assumption: and taking the CSI-RS resource corresponding to the second CRI as a channel measurement resource.

Further, information in the fifth CSI other than the first CRI may be determined based on the following assumption: taking the CSI-RS resource corresponding to the first CRI as a channel measurement resource, and taking the CSI-IM resource corresponding to the first CRI as an interference measurement resource; information in the sixth CSI other than the second CRI is determined based on the following assumption: and taking the CSI-RS resource corresponding to the second CRI as a channel measurement resource, and taking the CSI-IM resource corresponding to the second CRI as an interference measurement resource.

Here, in a CSI-RS resource set for channel measurement included in the first CSI reporting configuration, a CSI-RS resource corresponding to the first CRI is used as a channel measurement resource to obtain other information in the fifth CSI; and in a CSI-IM resource set used for interference measurement and included in the first CSI reporting configuration, using the CSI-IM resource corresponding to the first CRI as an interference measurement resource to obtain other information in the fifth CSI. Taking the CSI-RS resource corresponding to the second CRI in the CSI-RS resource set as a channel measurement resource to obtain other information in the sixth CSI; and taking the CSI-IM resource corresponding to the second CRI in the CSI-IM resource set as an interference measurement resource to obtain other information in the fifth CSI.

Here, the first CRI and the second CRI may indicate the same CSI-RS resource or may indicate different CSI-RS resources.

Here, the other information (for example, information other than the first CRI in the fifth CSI and information other than the second CRI in the sixth CSI) includes at least one of RI, LI, PMI, CQI, and the like. For example, RI, PMI, CQI, etc. information is obtained based on the corresponding CRI.

Further, optionally, the fifth CSI and the sixth CSI may also be obtained based on different interference assumptions. For example: as shown in fig. 5-4, the measurement resources of the fifth CSI include: a non-zero power CSI-RS resource for channel measurement 0 (corresponding to CRI0), a CSI-IM resource for interference measurement 0, a non-zero power CSI-RS resource for interference measurement 1; the measurement resource of the sixth CSI includes: non-zero power CSI-RS resource 2 for channel measurement (corresponding to CRI1), CSI-IM resource 2 for interference measurement. The terminal device may measure the fifth CSI and the sixth CSI based on different interference assumptions, and since CSI measured by the same CSI-RS resource under different interference assumptions is different, for example, the obtained RI/PMI/CQI may be different, and CRI selected by the corresponding terminal device may also be different. For example, the fifth CSI is based on an interference hypothesis, and the measured CSI is CRI0, RI0, PMI0, CQI 0; the sixth CSI is based on another interference assumption, and the measured CSI is CRI1, RI1, PMI1, and CQI1, that is, CSI-RS resources selected by the terminal device for measuring channels after considering different interferences may also change. For example, the fifth CSI may be based on non-zero power CSI-RS resource 1 for interference measurement, and the sixth CSI may not be based on non-zero power CSI-RS resource 1 for interference measurement.

■ in an alternative form of the present application, the multiple CSIs are determined based on different interference hypotheses. The plurality of CSI includes a seventh CSI and an eighth CSI; the seventh CSI comprises a first CQI, the eighth CSI comprises a second CQI, and the first CQI and the second CQI are calculated based on the same RI and PMI; the first CQI in the seventh CSI is obtained by performing interference measurement based on a third non-zero power CSI-RS resource, and the second CQI in the eighth CSI is obtained by not performing interference measurement based on the third non-zero power CSI-RS resource.

For example: the multiple CSIs specifically include RI, PMI, first CQI, and second CQI, where the seventh CSI may include RI, PMI, and first CQI, the eighth CSI may include only second CQI, and both the first CQI and the second CQI are calculated based on the RI and the PMI.

Here, optionally, the channel assumption on which the first CQI and the second CQI are based is the same, i.e. channel measurements are made based on the same channel measurement resources, e.g. the same non-zero power CSI-RS resources.

Here, optionally, the interference assumptions on which the first CQI and the second CQI are based are different, the first CQI is obtained by performing interference measurement based on a third non-zero power CSI-RS resource, and the second CQI is not obtained by performing interference measurement based on the third non-zero power CSI-RS. At this time, the terminal device regards a channel measurement result of another TRP as interference when measuring the first CQI, so that the measurement result of the first CQI takes the interference between TRPs into consideration, while the measurement result of the second CQI takes only the transmission of a single TRP into consideration.

Further, after the terminal device reports the first CQI and the second CQI, the network device may determine which CQI is used to determine the MCS according to a scheduling result (i.e., whether transmission resources between two TRPs coincide with each other), so as to obtain a more accurate MCS and improve throughput of downlink transmission.

In an optional manner of the present application, each CSI in the multiple CSIs corresponds to information of a single codeword.

Specifically, each CSI report can only assume single codeword transmission, and if the CSI includes RI, the rank indicated by RI cannot exceed 4.

In an optional manner of this application, the terminal device receives first indication information sent by a network device, where the first indication information is used to indicate the terminal device to report the multiple CSIs.

Specifically, the first indication information may be used to indicate whether the terminal device reports the multiple CSIs or only reports a single CSI.

Here, if the first indication information indicates that the terminal device reports multiple CSIs, the terminal device performs channel measurement and/or interference measurement according to the above scheme and reports multiple CSIs; otherwise, the terminal device may report only a single CSI according to the existing CSI reporting manner.

Here, optionally, the first indication information may be indicated to the terminal device by the first CSI reporting configuration, that is, the first CSI reporting configuration carries the first indication information. Without being limited to this, the first indication information may also be indicated to the terminal device through other signaling.

Here, the network device may enable the terminal device to report different CSI according to whether to perform multi-TRP joint transmission, so as to meet different requirements.

Step 402: and the terminal equipment reports the CSI.

In the embodiment of the application, the terminal device reports the multiple CSI to a network device. Here, the network device may be a base station, e.g., a gNB.

In the embodiment of the present application, the reporting of the multiple CSI by the terminal device may be implemented by one of the following manners:

the method I comprises the following steps: and the terminal equipment divides each CSI in the CSI into a first CSI part and a second CSI part for reporting, wherein the information length of the first CSI part is fixed, and the information length of the second CSI part is determined according to the information content of the first CSI part.

In an optional manner, the first CSI portions corresponding to the CSI may form a first reporting portion, and the second CSI portions corresponding to the CSI may form a second reporting portion, that is, the first reporting portion may include the first CSI portions corresponding to the CSI, and the second reporting portion may include the second CSI portions corresponding to the CSI.

In one example: the first reporting part may include important information such as RI, CRI, CQI, and the like of multiple CSI, and the second reporting part may include larger information such as PMI of multiple CSI; or, the first reporting part may include important information such as RI of a plurality of CSI, CQI, and number of non-zero wideband amplitude coefficients, and the second reporting part includes larger information such as PMI of a plurality of CSI; or, the first reporting part may include part of important information of the first CSI part of the CSI, and the second reporting part may include other information of the first CSI part of the CSI and all information of the second CSI part of the CSI. For example, the multiple CSIs include two CSIs, and referring to table 2 below, table 2 lists 4 examples, where RI0, CRI0, CQI0, PMI0 indicate information included in the first CSI, RI1, CRI1, CQI1, and PMI1 indicates information included in the second CSI.

TABLE 2

Further, optionally, if a code rate of a PUSCH or a PUCCH carrying a plurality of second CSI portions corresponding to the plurality of CSI exceeds a first threshold value, the terminal device discards at least one of the plurality of second CSI portions according to a priority order among the plurality of CSI, where a priority of CSI corresponding to the discarded second CSI portion is lower than a priority of CSI corresponding to a second CSI portion that is not discarded (that is, a priority of discarding a second CSI portion of CSI with a lower priority is prioritized). The dropping is performed to enable the code rate of the PUSCH or PUCCH to be lower than or equal to a first threshold value.

Here, optionally, the first threshold may be calculated by the terminal device, or configured by a network device to the terminal device.

Here, optionally, the priority among the multiple CSIs is determined according to at least one of: the type of information carried by the CSI, the channel assumption on which the CSI is based, and the interference assumption on which the CSI is based.

Here, optionally, the priority of the CSI obtained by performing the interference measurement based on the non-zero power CSI-RS resource is lower than the priority of the CSI obtained by not performing the interference measurement based on the non-zero power CSI-RS resource.

I) For example, the multiple CSIs include a first CSI and a second CSI, where the first CSI includes RI, PMI, and CQI, and the second CSI includes only CQI, and then the priority of the first CSI is higher than that of the second CSI.

II) for example, the multiple CSI comprise a first CSI and a second CSI, wherein the first CSI is obtained by performing interference measurement based on a CSI-IM resource and a non-zero power CSI-RS resource, the second CSI is obtained by performing interference measurement not based on the non-zero power CSI-RS resource but only based on the CSI-IM resource, and then the priority of the second CSI is higher than that of the first CSI.

The second method comprises the following steps: the terminal equipment divides the CSI into a first CSI part and a second CSI part for reporting, wherein the first CSI part comprises a third CQI, the second CSI part comprises a fourth CQI, and the third CQI and the fourth CQI are determined based on different interference assumptions.

Further, if the code rate of the PUSCH or PUCCH carrying the second CSI portion exceeds a first threshold value, the terminal device discards at least one piece of information in the second CSI portion according to a priority order among the pieces of information in the second CSI portion, where a priority of the discarded information is lower than a priority of the information that is not discarded.

For example, the first CSI part includes a CRI, an RI, and a third CQI, and the second CSI part includes a PMI and a fourth CQI. When the code rate of the PUSCH or PUCCH carrying the second CSI portion exceeds a first threshold, the terminal device may discard the fourth CQI in the second CSI portion first, and then discard the PMI; or, part of the PMI is discarded first, and then the fourth CQI is discarded. The purpose of dropping is to make the code rate of the PUSCH or PUCCH carrying the second CSI portion lower than or equal to a first threshold value.

According to the technical scheme of the embodiment of the application, the terminal device can report a plurality of CSI based on different channel hypotheses and/or interference hypotheses, and respectively correspond to different beams or different interference situations, such as the situation of single TRP transmission and the situation of multiple TRP joint transmission, so that the network device can perform more dynamic and flexible downlink transmission scheduling according to the plurality of CSI. After the terminal device reports the multiple CSIs, the network device may determine which CSI is used to determine the scheduling information according to the scheduling result (i.e., whether the transmission resources between the two TRPs coincide with each other), so as to obtain a more accurate scheduling result and improve the throughput of downlink transmission.

Fig. 6 is a schematic flow chart of a CSI receiving method provided in an embodiment of the present application, and as shown in fig. 6, the method includes the following steps:

step 601: the method includes that a network device sends a first CSI reporting configuration to a terminal device, the first CSI reporting configuration is used for the terminal device to report a plurality of CSI corresponding to the first CSI reporting configuration, the CSI is determined based on different channel hypotheses and/or interference hypotheses, wherein each CSI in the CSI comprises at least one of the following information: CRI, RI, PMI, CQI, LI.

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

In an optional manner of the present application, the multiple CSIs include the same information type.

CRI, RI, PMI, CQI; or,

CRI, RI, PMI, CQI, LI; or,

CRI, RI, CQI; or,

RI, PMI, CQI; or,

RI, PMI, CQI, LI; or,

RI、CQI。

in another optional manner of the present application, different CSI in the multiple CSIs may contain different types of information.

In the examples of the present applicationThe multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, which may specifically refer to the relevant description in the foregoing method.

In an optional manner of this application, the network device sends first indication information to the terminal device, where the first indication information is used to indicate the terminal device to report the multiple CSIs.

Step 602: the network device receives the plurality of CSIs.

In this embodiment, the network device receives the CSI reported by the terminal device. The method for reporting the CSI by the terminal device may refer to the description related to the foregoing method.

It should be noted that, in the embodiment of the present application, the technical solution of the CSI receiving method may be understood by referring to the technical solution of the CSI reporting method, and all or part of the technical solution of the CSI reporting method may be arbitrarily combined with the technical solution of the CSI receiving method.

Fig. 7 is a schematic structural composition diagram of a CSI reporting apparatus provided in an embodiment of the present application, and is applied to a terminal device, where as shown in fig. 7, the CSI reporting apparatus includes:

a determining unit 701, configured to determine multiple CSIs corresponding to a first CSI reporting configuration, where the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, and each CSI in the multiple CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI;

a reporting unit 702, configured to report the multiple CSIs.

In an alternative, the multiple CSIs contain the same information type.

In an optional manner, the information type included in each CSI in the multiple CSIs specifically:

CRI, RI, PMI, CQI; or,

CRI, RI, PMI, CQI, LI; or,

CRI, RI, CQI; or,

RI, PMI, CQI; or,

RI, PMI, CQI, LI; or,

RI、CQI。

in an optional manner, the multiple CSIs include a first CSI and a second CSI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including: the first CSI and the second CSI are determined based on different interference measurement resources.

In an optional manner, the interference measurement resource corresponding to the first CSI includes a first non-zero power CSI-RS resource, and the interference measurement resource corresponding to the second CSI does not include the first non-zero power CSI-RS resource; the first non-zero power CSI-RS resource is used for interference measurement.

In an optional manner, the multiple CSIs include a third CSI and a fourth CSI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including:

the third CSI is determined based on the following assumptions: taking a channel obtained by measurement on the second non-zero power CSI-RS resource as interference to carry out CSI measurement; the fourth CSI is determined based on the following assumptions: not taking a channel measured on the second non-zero power CSI-RS resource as interference; the second non-zero power CSI-RS resource is used for channel measurement.

In an optional manner, the second non-zero power CSI-RS resource is a non-zero power CSI-RS resource configured in a second CSI reporting configuration, and the second CSI reporting configuration has an association relationship with the first CSI reporting configuration; or,

the second non-zero power CSI-RS resource is a non-zero power CSI-RS resource configured in the first CSI reporting configuration, and the non-zero power CSI-RS resource is not used for channel measurement corresponding to the third CSI.

In an optional manner, the multiple CSIs include a fifth CSI and a sixth CSI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including: the fifth CSI and the sixth CSI are determined based on different channel measurement resources.

In an optional manner, the fifth CSI includes a first CRI, and the sixth CSI includes a second CRI; wherein,

information in the fifth CSI other than the first CRI is determined based on the following assumptions: taking the CSI-RS resource corresponding to the first CRI as a channel measurement resource; information in the sixth CSI other than the second CRI is determined based on the following assumptions: and taking the CSI-RS resource corresponding to the second CRI as a channel measurement resource.

In an optional manner, the multiple CSIs include a seventh CSI and an eighth CSI; the seventh CSI comprises a first CQI, the eighth CSI comprises a second CQI, and the first CQI and the second CQI are calculated based on the same RI and PMI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including: and the first CQI in the seventh CSI is obtained by performing interference measurement based on a third non-zero power CSI-RS resource, and the second CQI in the eighth CSI is not obtained by performing interference measurement based on the third non-zero power CSI-RS resource.

In an optional manner, each CSI of the multiple CSIs corresponds to information of a single codeword.

In an optional manner, the apparatus further comprises:

a receiving unit 703 is configured to receive first indication information sent by a network device, where the first indication information is used to indicate the terminal device to report the multiple CSIs.

In an optional manner, the reporting unit 702 is configured to divide each CSI in the multiple CSIs into a first CSI part and a second CSI part for reporting, where an information length of the first CSI part is fixed, and an information length of the second CSI part is determined according to information content of the first CSI part

In an optional manner, the apparatus further comprises:

a processing unit (not shown in the figure), configured to discard at least one second CSI part of the multiple second CSI parts according to a priority order among the multiple CSI parts if a code rate of a PUSCH or a PUCCH carrying the multiple second CSI parts corresponding to the multiple CSI parts exceeds a first threshold value, where a priority of CSI corresponding to the discarded second CSI part is lower than a priority of CSI corresponding to a second CSI part that is not discarded.

In an alternative, the priority among the multiple CSIs is determined according to at least one of: the type of information carried by the CSI, the channel assumption on which the CSI is based, and the interference assumption on which the CSI is based.

In an optional manner, the priority of the CSI obtained by performing interference measurement based on the non-zero power CSI-RS resource is lower than the priority of the CSI obtained by performing interference measurement based on the non-zero power CSI-RS resource.

In an optional manner, the reporting unit 702 is configured to divide the CSI into a first CSI portion and a second CSI portion for reporting, where the first CSI portion includes a third CQI, the second CSI portion includes a fourth CQI, and the third CQI and the fourth CQI are determined based on different interference hypotheses.

Those skilled in the art should understand that the relevant description of the CSI reporting apparatus in the embodiments of the present application can be understood by referring to the relevant description of the CSI reporting method in the embodiments of the present application.

Fig. 8 is a schematic structural component diagram of a CSI receiving apparatus provided in an embodiment of the present application, which is applied to a network device, such as a base station, and as shown in fig. 8, the CSI receiving apparatus includes:

a sending unit 801, configured to send a first CSI reporting configuration to a terminal device, where the first CSI reporting configuration is used for the terminal device to report a plurality of CSIs corresponding to the first CSI reporting configuration, and the CSIs are determined based on different channel hypotheses and/or interference hypotheses, where each CSI in the CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI;

a receiving unit 802, configured to receive the multiple CSIs.

In an alternative, the multiple CSIs contain the same information type.

CRI, RI, PMI, CQI; or,

CRI, RI, PMI, CQI, LI; or,

CRI, RI, CQI; or,

RI, PMI, CQI; or,

RI, PMI, CQI, LI; or,

RI、CQI。

In an optional manner, the sending unit 801 is further configured to send first indication information to the terminal device, where the first indication information is used to indicate the terminal device to report the multiple CSIs.

Those skilled in the art should understand that the relevant description of the CSI reporting apparatus and the CSI receiving apparatus in the embodiments of the present application may be understood by referring to the relevant description of the CSI reporting method and the CSI receiving method in the embodiments of the present application.

Fig. 9 is a schematic structural diagram of a communication device 900 according to an embodiment of the present application. The communication device may be a terminal device or a network device, and the communication device 900 shown in fig. 9 includes a processor 910, and the processor 910 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. 9, the communication device 900 may also include a memory 920. From the memory 920, the processor 910 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 920 may be a separate device from the processor 910, or may be integrated in the processor 910.

Optionally, as shown in fig. 9, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 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 930 may include a transmitter and a receiver, among others. The transceiver 930 may further include one or more antennas.

Optionally, the communication device 900 may specifically be a network device in the embodiment of the present application, and the communication device 900 may implement a corresponding procedure 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 900 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 900 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. 10 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1000 shown in fig. 10 includes a processor 1010, and the processor 1010 may 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. 10, the chip 1000 may further include a memory 1020. From the memory 1020, the processor 1010 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, the chip 1000 may further include an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or chips, and in particular, may obtain information or data sent by the other devices or chips.

Optionally, the chip 1000 may further include an output interface 1040. The processor 1010 may control the output interface 1040 to communicate with other devices or chips, and may particularly output information or data to the 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.

Fig. 11 is a schematic block diagram of a communication system 1100 provided in an embodiment of the present application. As shown in fig. 11, the communication system 1100 includes a terminal device 1110 and a network device 1120.

The terminal device 1110 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 1120 may be configured to implement the corresponding function implemented by the network device in the foregoing method, which is not described herein again for brevity.

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 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 completes the steps of the method in combination with hardware of the processor.

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, including 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 instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are 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 instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are 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 a 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 is clear to those skilled in the art that, for convenience and brevity 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 place, or may be distributed on a plurality of 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, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. 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 think 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

A method for reporting Channel State Information (CSI), the method comprising:

the terminal equipment determines a plurality of CSI corresponding to a first CSI reporting configuration, wherein the CSI is determined based on different channel hypotheses and/or interference hypotheses, and each CSI in the CSI comprises at least one of the following information: CSI-RS resource indication information CRI, rank indication information RI, precoding matrix indication information PMI, channel quality indication information CQI and layer indication information LI;

and the terminal equipment reports the CSI.
The method of claim 1, wherein the multiple CSIs contain a same information type.
The method according to claim 2, wherein the type of information included in each CSI of the multiple CSIs is specifically:

CRI, RI, PMI, CQI; or,

CRI, RI, PMI, CQI, LI; or,

CRI, RI, CQI; or,

RI, PMI, CQI; or,

RI, PMI, CQI, LI; or,

RI、CQI。
the method of any of claims 1-3, wherein the plurality of CSI includes first CSI and second CSI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including: the first CSI and the second CSI are determined based on different interference measurement resources.
The method of claim 4, wherein the interference measurement resource corresponding to the first CSI comprises a first non-zero power CSI-RS resource, and the interference measurement resource corresponding to the second CSI does not comprise the first non-zero power CSI-RS resource; the first non-zero power CSI-RS resource is used for interference measurement.
The method of any of claims 1-3, wherein the CSI includes a third CSI and a fourth CSI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including:

the third CSI is determined based on the following assumptions: taking a channel obtained by measurement on the second non-zero power CSI-RS resource as interference to carry out CSI measurement; the fourth CSI is determined based on the following assumptions: not taking a channel measured on the second non-zero power CSI-RS resource as interference; the second non-zero power CSI-RS resource is used for channel measurement.
The method of claim 6, wherein,

the second non-zero power CSI-RS resource is a non-zero power CSI-RS resource configured in a second CSI reporting configuration, and the second CSI reporting configuration and the first CSI reporting configuration have an incidence relation; or,

the second non-zero power CSI-RS resource is a non-zero power CSI-RS resource configured in the first CSI reporting configuration, and the non-zero power CSI-RS resource is not used for channel measurement corresponding to the third CSI.
The method of any of claims 1-3, wherein the plurality of CSI includes a fifth CSI and a sixth CSI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including: the fifth CSI and the sixth CSI are determined based on different channel measurement resources.
The method of claim 8, wherein the fifth CSI comprises a first CRI and the sixth CSI comprises a second CRI; wherein,

information in the fifth CSI other than the first CRI is determined based on the following assumption: taking the CSI-RS resource corresponding to the first CRI as a channel measurement resource; information in the sixth CSI other than the second CRI is determined based on the following assumption: and taking the CSI-RS resource corresponding to the second CRI as a channel measurement resource.
The method of any of claims 1-3, wherein the plurality of CSI includes a seventh CSI and an eighth CSI; the seventh CSI comprises a first CQI, the eighth CSI comprises a second CQI, and the first CQI and the second CQI are calculated based on the same RI and PMI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including: and the first CQI in the seventh CSI is obtained by performing interference measurement based on a third non-zero power CSI-RS resource, and the second CQI in the eighth CSI is not obtained by performing interference measurement based on the third non-zero power CSI-RS resource.
The method of any of claims 1-10, wherein each CSI of the plurality of CSIs corresponds to information of a single codeword.
The method of any of claims 1 to 11, wherein the method further comprises:

the terminal equipment receives first indication information sent by network equipment, and the first indication information is used for indicating the terminal equipment to report the CSI.
The method according to any one of claims 1 to 12, wherein reporting the CSI by the terminal device includes:

the terminal equipment divides each CSI in the CSI into a first CSI part and a second CSI part for reporting, wherein the information length of the first CSI part is fixed, and the information length of the second CSI part is determined according to the information content of the first CSI part.
The method of claim 13, wherein the method further comprises:

and if the code rate of a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH) carrying a plurality of second CSI parts corresponding to the CSI exceeds a first threshold value, the terminal equipment discards at least one second CSI part in the CSI parts according to the priority sequence among the CSI parts, wherein the priority of the CSI corresponding to the discarded second CSI part is lower than that of the CSI corresponding to the undiscarded second CSI part.
The method of claim 14, wherein the priority among the plurality of CSIs is determined according to at least one of: the type of information carried by the CSI, the channel assumption on which the CSI is based, and the interference assumption on which the CSI is based.
The method of claim 15, wherein a priority of CSI obtained by interference measurement based on non-zero power CSI-RS resources is lower than a priority of CSI obtained by interference measurement not based on non-zero power CSI-RS resources.
The method of any one of claims 1 to 12, wherein reporting the multiple CSIs by the terminal device comprises:

the terminal equipment divides the CSI into a first CSI part and a second CSI part for reporting, wherein the first CSI part comprises a third CQI, the second CSI part comprises a fourth CQI, and the third CQI and the fourth CQI are determined based on different interference assumptions.
A channel state information, CSI, receiving method, the method comprising:

the method includes that a network device sends a first CSI reporting configuration to a terminal device, the first CSI reporting configuration is used for the terminal device to report a plurality of CSI corresponding to the first CSI reporting configuration, the CSI is determined based on different channel hypotheses and/or interference hypotheses, and each CSI in the CSI comprises at least one of the following information: CRI, RI, PMI, CQI, LI;

the network device receives the plurality of CSIs.
The method of claim 18, wherein the multiple CSIs contain a same information type.
The method according to claim 19, wherein each CSI in the CSI comprises information types, specifically:

CRI, RI, PMI, CQI; or,

CRI, RI, PMI, CQI, LI; or,

CRI, RI, CQI; or,

RI, PMI, CQI; or,

RI, PMI, CQI, LI; or,

RI、CQI。
the method of any of claims 18-20, wherein each CSI of the plurality of CSIs corresponds to information of a single codeword.
The method of any of claims 18 to 21, wherein the method further comprises:

and the network equipment sends first indication information to the terminal equipment, wherein the first indication information is used for indicating the terminal equipment to report the CSI.
An apparatus for CSI reporting, the apparatus comprising:

a determining unit, configured to determine multiple CSIs corresponding to a first CSI reporting configuration, where the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, and each CSI in the multiple CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI;

and the reporting unit is used for reporting the CSI.
The apparatus of claim 23, wherein the multiple CSIs contain a same information type.
The apparatus of claim 24, wherein each CSI of the multiple CSIs includes information types, specifically:

CRI, RI, PMI, CQI; or,

CRI, RI, PMI, CQI, LI; or,

CRI, RI, CQI; or,

RI, PMI, CQI; or,

RI, PMI, CQI, LI; or,

RI、CQI。
the apparatus of any of claims 23-25, wherein the plurality of CSI comprises first CSI and second CSI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including: the first CSI and the second CSI are determined based on different interference measurement resources.
The apparatus of claim 26, wherein the first CSI-corresponding interference measurement resource comprises a first non-zero power CSI-RS resource, and the second CSI-corresponding interference measurement resource does not comprise the first non-zero power CSI-RS resource; the first non-zero power CSI-RS resource is used for interference measurement.
The apparatus of any of claims 23-25, wherein the plurality of CSI comprises third CSI and fourth CSI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including:

the third CSI is determined based on the following assumptions: taking a channel obtained by measurement on the second non-zero power CSI-RS resource as interference to carry out CSI measurement; the fourth CSI is determined based on the following assumptions: not taking a channel measured on the second non-zero power CSI-RS resource as interference; the second non-zero power CSI-RS resource is used for channel measurement.
The apparatus of claim 28, wherein,

the second non-zero power CSI-RS resource is a non-zero power CSI-RS resource configured in a second CSI reporting configuration, and the second CSI reporting configuration and the first CSI reporting configuration have an incidence relation; or,

the second non-zero power CSI-RS resource is a non-zero power CSI-RS resource configured in the first CSI reporting configuration, and the non-zero power CSI-RS resource is not used for channel measurement corresponding to the third CSI.
The apparatus of any of claims 23-25, wherein the plurality of CSI comprises fifth CSI and sixth CSI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including: the fifth CSI and the sixth CSI are determined based on different channel measurement resources.
The apparatus of claim 30, wherein the fifth CSI comprises a first CRI and the sixth CSI comprises a second CRI; wherein,

information in the fifth CSI other than the first CRI is determined based on the following assumption: taking the CSI-RS resource corresponding to the first CRI as a channel measurement resource; information in the sixth CSI other than the second CRI is determined based on the following assumptions: and taking the CSI-RS resource corresponding to the second CRI as a channel measurement resource.
The apparatus of any of claims 23-25, wherein the plurality of CSI comprises seventh CSI and eighth CSI; the seventh CSI comprises a first CQI, the eighth CSI comprises a second CQI, and the first CQI and the second CQI are calculated based on the same RI and PMI;

the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, including: and the first CQI in the seventh CSI is obtained by performing interference measurement based on a third non-zero power CSI-RS resource, and the second CQI in the eighth CSI is not obtained by performing interference measurement based on the third non-zero power CSI-RS resource.
The apparatus of any of claims 23-32, wherein each CSI in the plurality of CSIs corresponds to information of a single codeword.
The apparatus of any one of claims 23 to 33, wherein the apparatus further comprises:

a receiving unit, configured to receive first indication information sent by a network device, where the first indication information is used to indicate the terminal device to report the multiple CSIs.
The apparatus according to any one of claims 23 to 34, wherein the reporting unit is configured to divide each CSI in the multiple CSIs into a first CSI component and a second CSI component for reporting, where an information length of the first CSI component is fixed, and an information length of the second CSI component is determined according to an information content of the first CSI component.
The apparatus of claim 35, wherein the apparatus further comprises:

and the processing unit is configured to discard at least one second CSI part of the plurality of second CSI parts according to a priority order among the plurality of CSI if a code rate of a PUSCH or a PUCCH carrying the plurality of second CSI parts corresponding to the plurality of CSI parts exceeds a first threshold, where a priority of CSI corresponding to the discarded second CSI part is lower than a priority of CSI corresponding to the second CSI part that is not discarded.
The apparatus of claim 36, wherein a priority among the plurality of CSI is determined according to at least one of: the type of information carried by the CSI, the channel assumption on which the CSI is based, and the interference assumption on which the CSI is based.
The apparatus of claim 37, wherein a priority of CSI obtained from interference measurements based on non-zero power CSI-RS resources is lower than a priority of CSI obtained from interference measurements not based on non-zero power CSI-RS resources.
The apparatus of any one of claims 23 to 34, wherein the reporting unit is configured to divide the CSI into a first CSI portion and a second CSI portion for reporting, the first CSI portion includes a third CQI, the second CSI portion includes a fourth CQI, and the third CQI and the fourth CQI are determined based on different interference hypotheses.
A CSI receiving apparatus, the apparatus comprising:

a sending unit, configured to send a first CSI reporting configuration to a terminal device, where the first CSI reporting configuration is used for the terminal device to report multiple CSIs corresponding to the first CSI reporting configuration, and the multiple CSIs are determined based on different channel hypotheses and/or interference hypotheses, where each CSI in the multiple CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI;

a receiving unit, configured to receive the multiple CSIs.
The apparatus of claim 40, wherein the multiple CSIs comprise a same information type.
The apparatus of claim 41, wherein the type of information included in each CSI of the multiple CSIs is specifically:

CRI, RI, PMI, CQI; or,

CRI, RI, PMI, CQI, LI; or,

CRI, RI, CQI; or,

RI, PMI, CQI; or,

RI, PMI, CQI, LI; or,

RI、CQI。
the apparatus of any one of claims 40-42, wherein each CSI in the plurality of CSIs corresponds to information of a single codeword.
The apparatus according to any one of claims 40 to 43, wherein the sending unit is further configured to send first indication information to the terminal device, where the first indication information is used to indicate the terminal device to report the multiple CSIs.
A terminal 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 1 to 17.
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 18 to 22.
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 one of claims 1 to 17.
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 one of claims 18 to 22.
A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 17.
A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 18 to 22.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 17.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 18 to 22.
A computer program for causing a computer to perform the method of any one of claims 1 to 17.
A computer program for causing a computer to perform the method of any one of claims 18 to 22.