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

Abstract

An embodiment of the present application provides a CSI reporting and receiving method, apparatus, terminal device, and network device, the method comprising: the terminal device determines multiple CSIs corresponding to a first CSI reporting configuration, the multiple CSIs are determined based on different channel assumptions and / or interference assumptions, wherein each of the multiple CSIs contains at least one of the following information: CRI, RI, PMI, CQI, LI; the terminal device reports the multiple CSIs.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a method, apparatus, terminal equipment, and network equipment for reporting and receiving channel state information (CSI). Background Art

[0002] In order for the network equipment to perform reasonable scheduling, the terminal equipment needs to report CSI so that the network equipment can determine the scheduling information of the terminal equipment. The terminal equipment reports CSI based on the CSI reporting configuration configured by the network equipment. The current CSI reporting configuration cannot obtain CSI in the case of multiple transmission / reception points (TRP) joint transmission, that is, each CSI reporting configuration can only be used to obtain CSI in the case of one TRP transmission, resulting in the network equipment being unable to accurately determine the scheduling information of the terminal equipment in the case of multiple TRP joint transmission. Summary of the invention

[0003] The embodiments of the present application provide a CSI reporting and receiving method, apparatus, terminal equipment, and network equipment.

[0004] The CSI reporting method provided in the embodiment of the present application includes:

[0005] The terminal device determines multiple CSIs corresponding to the first CSI reporting configuration, where the multiple CSIs are determined based on different channel assumptions and / or interference assumptions, wherein each of the multiple CSIs includes at least one of the following information: CSI-RS resource indication information (CSI-RS Resource Indicator, CRI), rank indication information (Rank Indicator, RI), precoding matrix indication information (Precoding Matrix Indicator, PMI), channel quality indication information (Channel Quality Indicator, CQI), layer indication information (Layer Indicator, LI);

[0006] The terminal device reports the multiple CSIs.

[0007] The CSI receiving method provided in an embodiment of the present application includes:

[0008] The network device sends a first CSI reporting configuration to the terminal device, where the first CSI reporting configuration is used by the terminal device to report multiple CSIs corresponding to the first CSI reporting configuration, where the multiple CSIs are determined based on different channel assumptions and / or interference assumptions, wherein each CSI in the multiple CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI;

[0009] The network device receives the plurality of CSIs.

[0010] The CSI reporting device provided in the embodiment of the present application includes:

[0011] A determining unit, configured to determine a plurality of CSIs corresponding to a first CSI reporting configuration, wherein the plurality of CSIs are determined based on different channel assumptions and / or interference assumptions, wherein each of the plurality of CSIs comprises at least one of the following information: CRI, RI, PMI, CQI, LI;

[0012] A reporting unit is used to report the multiple CSIs.

[0013] The CSI receiving device provided in the embodiment of the present application includes:

[0014] A sending unit, configured to send a first CSI reporting configuration to a terminal device, wherein the first CSI reporting configuration is used by the terminal device to report multiple CSIs corresponding to the first CSI reporting configuration, wherein the multiple CSIs are determined based on different channel assumptions and / or interference assumptions, wherein each CSI in the multiple CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI;

[0015] A receiving unit is used to receive the multiple CSIs.

[0016] The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned CSI reporting method.

[0017] The network device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned CSI receiving method.

[0018] The chip provided in the embodiment of the present application is used to implement the above-mentioned CSI reporting method or CSI receiving method.

[0019] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned CSI reporting method or CSI receiving method.

[0020] The computer-readable storage medium provided in an embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned CSI reporting method or CSI receiving method.

[0021] The computer program product provided in the embodiments of the present application includes computer program instructions, which enable a computer to execute the above-mentioned CSI reporting method or CSI receiving method.

[0022] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned CSI reporting method or CSI receiving method.

[0023] Through the above technical solution, the terminal device can report multiple CSIs based on different channel assumptions and / or interference assumptions, so that the network device can accurately determine the scheduling information of the terminal device in the case of multiple TRP joint transmission, thereby improving the downlink transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

[0026] Figure 2-1 This is a schematic diagram of the downlink non-coherent transmission provided by the embodiment of the present application. Figure 1 ;

[0027] Figure 2-2 Schematic diagram 2 of downlink incoherent transmission provided in an embodiment of the present application;

[0028] Figure 2-3 This is a schematic diagram of the downlink non-coherent transmission provided by the embodiment of the present application. Figure 3 ;

[0029] Figure 3 It is a schematic diagram of CSI reporting methods with different periodicities provided in an embodiment of the present application;

[0030] Figure 4 A flowchart of a CSI reporting method provided in an embodiment of the present application;

[0031] Figure 5-1 It is a schematic diagram of using different interference measurement resources for multiple CSIs provided in an embodiment of the present application;

[0032] Figure 5-2It is a schematic diagram of multiple CSIs using different interference assumptions provided in an embodiment of the present application;

[0033] Figure 5-3 It is a schematic diagram of using different interference measurement resources for multiple CSIs provided in an embodiment of the present application;

[0034] Figure 5-4 It is a schematic diagram of using different channel measurement resources for multiple CSIs provided in an embodiment of the present application;

[0035] Figure 6 A flowchart of a CSI receiving method provided in an embodiment of the present application;

[0036] Figure 7 A schematic diagram of the structure of a CSI reporting device provided in an embodiment of the present application;

[0037] Figure 8 A schematic diagram of the structure of a CSI receiving device provided in an embodiment of the present application;

[0038] Fig. 9 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0039] Fig.10 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0040] Fig.11 It is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, 5G communication system or future communication system, etc.

[0043] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal). The network device 110 may provide communication coverage for a specific geographical area, and may communicate with terminals located within the coverage area. Optionally, the network device 110 may be an evolved base station (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, etc.

[0044] The communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110. As used herein, "terminal" includes but is not limited to connecting via a wired line, such as via a Public Switched Telephone Networks (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 another terminal's device configured to receive / send communication signals; and / or an Internet of Things (IoT) device. A terminal configured to communicate via 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 System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, 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 radiotelephone transceivers. A terminal may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with 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.

[0045] Optionally, the terminals 120 may perform device-to-device (D2D) communication with each other.

[0046] Optionally, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0047] Figure 1 One network device and two terminals are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminals within its coverage area, which is not limited in the embodiments of the present application.

[0048] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0049] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal 120 with communication functions. The network device 110 and the terminal 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0050] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0051] 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.

[0052] Downlink non-coherent transmission

[0053] The NR system introduces non-coherent transmission based on multiple TRPs for downlink and uplink. The backhaul connection between TRPs can be ideal or non-ideal. In an ideal backhaul, TRPs can exchange information quickly and dynamically. In a non-ideal backhaul, TRPs can only exchange information quasi-statically due to the large delay. In downlink non-coherent transmission, multiple TRPs can use different physical downlink control channels (PDCCH) to independently schedule multiple physical downlink shared channels (PDSCH) of a terminal device. Multiple TRPs can also use the same PDCCH to schedule multiple PDSCH transmissions of a terminal device (only for ideal backhaul), where data from different TRPs use different transmission layers.

[0054] For downlink transmissions scheduled by multiple PDCCHs, the scheduled PDSCHs can be transmitted in the same time slot or in different time slots. The terminal device needs to support the simultaneous reception of PDCCHs and PDSCHs from different TRPs. When the terminal device feeds back Acknowledgement (ACK) / Negative Acknowledgement (NACK) and CSI, it can feed back ACK / NACK and CSI to different TRPs (such as Figure 2-1 As shown), or they can be combined and reported to a TRP (as shown Figure 2-2 As shown). The former can be applied to both ideal backhaul and non-ideal backhaul scenarios, while the latter can only be used in ideal backhaul scenarios. Among them, the downlink control information (Downlink Control Information, DCI) for scheduling PDSCH transmitted by different TRPs can be carried by different control resource sets (Control Resource Set, CORESET), that is, the network device is configured with multiple CORESETs, and each TRP uses its own CORESET for scheduling, that is, different TRPs can be distinguished by CORESET. For example, the network device can configure an index for each CORESET, and different indexes correspond to different TRPs. When the terminal device feeds back CSI, it is necessary to feed back the CSI corresponding to each TRP separately. The CSI contains RI, PMI, CQI and other contents, which can be used for scheduling downlink transmission of each TRP.

[0055] For multi-TRP downlink transmissions using a single PDCCH schedule, the same DCI can schedule multiple transport layers from different TRPs. Figure 2-3 . Among them, the transport layers from different TRPs use demodulation reference signal (DMRS) ports in different CDM groups and different transmission configuration indicator (TCI) states. The network equipment needs to indicate the DMRS ports from different CDM groups and the TCI states corresponding to different CDM groups in one DCI, so as to support different DMRS ports to use different beams for transmission. In this case, HARQ-ACK feedback and CSI reporting can reuse the mechanisms in the existing protocol. This solution can only be used in ideal backhaul scenarios.

[0056] Downlink CSI reporting

[0057] In order for the network equipment to perform reasonable scheduling, the terminal equipment needs to feedback the downlink CSI so that the network equipment can determine the scheduling information of the terminal equipment, such as the number of transmission layers, precoding matrix, transmission beam, modulation and coding method. Specifically, the CSI report of the terminal equipment is based on the CSI reporting configuration indicated by the network equipment. The uplink resources used by the terminal equipment to report CSI and the downlink reference signal used for CSI measurement are indicated by the CSI reporting configuration. Each CSI reporting configuration corresponds to a CSI report, and each CSI report can contain CRI, RI, PMI, CQI and other information. Among them,

[0058] ■CRI is used to determine the CSI-RS resource currently used for channel measurement and the Interference Measurement Resource (IMR) currently used for interference measurement from multiple CSI-RS resources;

[0059] ■RI is used to report the recommended number of transmission layers;

[0060] ■PMI is used to determine the recommended precoding matrix from a predefined codebook;

[0061] ■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 of SINR is determined based on the non-zero power Channel State Information Reference Signal (CSI-RS) resource configured by the network device for channel measurement, and the interference part is determined based on the Channel State Information Interference Measurement (CSI-IM) resource or non-zero power CSI-RS resource configured by the network device for interference measurement. CQI is calculated based on the reported RI and PMI.

[0062] The CSI reporting of the terminal device can be reported in three periodic reporting modes: periodic CSI, quasi-continuous CSI and aperiodic CSI. Figure 3 As shown. Among them, periodic CSI is transmitted on the Physical Uplink Control Channel (PUCCH), and its CSI reporting configuration is configured by the Radio Resource Control (RRC) signaling. After the terminal device receives the corresponding RRC signaling configuration, it periodically reports CSI. Quasi-persistent CSI can be transmitted on PUCCH or Physical Uplink Shared Channel (PUSCH). The CSI reporting configuration corresponding to the CSI transmitted on PUCCH is pre-configured by RRC signaling and activated or deactivated by Media Access Control (MAC) layer signaling. The CSI reporting configuration corresponding to the CSI transmitted on PUSCH is dynamically indicated (activated or deactivated) by DCI signaling. After the terminal device receives the activation signaling configured by the network device, it periodically transmits CSI on PUCCH or PUSCH until it stops reporting after receiving the deactivation signaling. The CSI reporting configuration corresponding to the non-periodic CSI reporting is also pre-configured through RRC signaling. Some of the configurations can be activated through MAC layer signaling, and then the CSI reporting configuration for CSI reporting is indicated through CSI trigger signaling in DCI. After receiving the CSI trigger signaling, the terminal device reports the corresponding CSI on the scheduled PUSCH at one time according to the indicated CSI reporting configuration.

[0063] When a CSI carries a large number of bits, in order to give priority to the transmission of important CSI information, a CSI can be divided into two parts (part). For different types of codebooks, the CSI information contained in CSI Part 1 (CSI Part 1) and CSI Part 2 (CSI Part 2) is shown in Table 1 below. The number of bits in CSI Part 1 is fixed and is used to carry a small amount of important information such as RI and CQI; the number of bits in CSI Part 2 is determined according to CSI Part 1 and is used to carry information with a large number of bits such as PMI. When the code rate of the uplink channel carrying CSI (such as PUSCH or PUCCH) exceeds a certain value, the terminal device needs to discard some information in CSI Part 2 to ensure the transmission performance of the uplink channel (at least the code rate is within a reasonable range). Specifically, the information in CSI Part 1 will not be discarded, and the CSI Part 2 corresponding to the CSI with a lower priority will be discarded first according to the priority of CSI reporting. Among them, the priority of CSI reporting is determined according to the periodicity of CSI, the content of CSI reporting, the carrier corresponding to CSI reporting, and the ID of CSI reporting configuration.

[0064]

[0065] Table 1

[0066] It can be known from the above technology that the terminal device reports a CSI for each CSI reporting configuration. The CSI is determined based on the channel measurement resources and interference measurement resources configured by the network device, and one CSI can only be used to obtain the channel information of one TRP. For example, the terminal device can use CSI reporting configuration 1 to obtain a separate CSI for TRP1, and use CSI reporting configuration 2 to obtain a separate CSI for TRP2. However, in the scheme of joint transmission of multiple TRPs, the data of two TRPs can be transmitted on overlapping PDSCHs. In this case, determining the CSI of one TRP needs to consider the interference from another TRP. The CSI reporting mechanism terminal device in the above scheme will only report the CSI of each TRP. The network device cannot accurately determine the scheduling information of the terminal device (such as the transmission beam, the number of transmission layers, the precoding matrix and MCS, etc.) in the case of joint transmission of multiple TRPs. To this end, the following technical scheme of the embodiment of the present application is proposed. It should be noted that "multiple" in the embodiment of the present application refers to "at least two" or "two or more".

[0067] Figure 4 A flow chart of a CSI reporting method provided in an embodiment of the present application is shown as follows: Figure 4 As shown, the method comprises the following steps:

[0068] Step 401: The terminal device determines multiple CSIs corresponding to the first CSI reporting configuration, and the multiple CSIs are determined based on different channel assumptions and / or interference assumptions, wherein each of the multiple CSIs contains at least one of the following information: CRI, RI, PMI, CQI, LI.

[0069] In the embodiment of the present application, each of the multiple CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI. The following describes the type of information included in the multiple CSIs.

[0070] 1) In an optional manner of the present application, the multiple CSIs contain the same information type. Here, the information types contained in different CSIs in the multiple CSIs are the same, that is, different CSIs contain the same information field.

[0071] Further, optionally, the information type included in each CSI in the multiple CSIs is specifically:

[0072] CRI, RI, PMI, CQI; or,

[0073] CRI, RI, PMI, CQI, LI; or,

[0074] CRI, RI, CQI; or,

[0075] RI, PMI, CQI; or,

[0076] RI, PMI, CQI, LI; or,

[0077] RI, CQI.

[0078] 2) In another optional manner of the present application, different CSIs among the multiple CSIs contain different types of information.

[0079] For example, the multiple CSIs include 2 CSIs, one of which includes one of the above information types, and the other CSI may only include CQI. For example, one CSI includes RI, PMI and CQI, and the other CSI only includes CQI, but the two CQIs are determined based on different channel assumptions and / or interference assumptions.

[0080] In the embodiment of the present application, the multiple CSIs are determined based on different channel assumptions and / or interference assumptions, wherein the channel assumption is used to determine which resources are used as channel measurements, and the interference assumption is used to determine which resources are used as interference measurements.

[0081] This is described in detail below.

[0082] ■ In an optional manner of the present application, the multiple CSIs are determined based on different interference assumptions. The multiple CSIs include a first CSI and a second CSI; wherein the first CSI and the second CSI are determined based on different interference measurement resources.

[0083] 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; wherein the first non-zero power CSI-RS resource is a non-zero power CSI-RS resource for interference measurement. Here, the non-zero power CSI-RS resource for interference measurement is included in the CSI resource configuration (CSI-resource setting) for interference measurement.

[0084] For example: Figure 5-1 As shown, the measurement resources of the first CSI include: non-zero power CSI-RS resource 0 for channel measurement, CSI-IM resource 0 for interference measurement, and non-zero power CSI-RS resource 1 for interference measurement; the measurement resources of the second CSI include: non-zero power CSI-RS resource 0 for channel measurement, and CSI-IM resource 2 for interference measurement. At this time, the non-zero power CSI-RS resource 1 for interference measurement can be used to measure interference from another TRP, so that the measurement result of the first CSI takes into account the interference between TRPs, while the measurement result of the second CSI only considers the transmission of a single TRP.

[0085] Furthermore, after the terminal device reports the first CSI and the second CSI, the network device can determine which CSI to use to obtain scheduling information based on the scheduling result (i.e., whether the transmission resources between the two TRPs overlap), thereby obtaining more accurate scheduling results and improving the throughput of downlink transmission.

[0086] ■In an optional manner of the present application, the multiple CSIs are determined based on different channel assumptions and interference assumptions. The multiple CSIs include a third CSI and a fourth CSI; wherein the third CSI is determined based on the following assumption: the channel measured on the second non-zero power CSI-RS resource is used as interference for CSI measurement; the fourth CSI is determined based on the following assumption: the channel measured on the second non-zero power CSI-RS resource is not used as interference; wherein the second non-zero power CSI-RS resource is a non-zero power CSI-RS resource for channel measurement. Here, the non-zero power CSI-RS resource for channel measurement is included in the CSI resource configuration (CSI-resource setting) for channel measurement.

[0087] Further, the second non-zero power CSI-RS resource may be determined in one of the following ways:

[0088] 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 is associated with the first CSI reporting configuration.

[0089] For example: Figure 5-2 As shown, the measurement resources configured in the first CSI reporting configuration include: non-zero power CSI-RS resource 0 for channel measurement, and CSI-IM resource 0 for interference measurement. The measurement resources configured in the second CSI reporting configuration include: non-zero power CSI-RS resource 1 for channel measurement, and CSI-IM resource 1 for interference measurement. Among them, the channel measurement of the fourth CSI is based on the non-zero power CSI-RS resource 0, and the interference measurement is based on the CSI-IM resource 0; the channel measurement of the third CSI is based on the non-zero power CSI-RS resource 0, and the 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 can be pre-notified to the terminal device through high-layer signaling, for example, the ID of the second CSI reporting configuration is indicated in the configuration information of the first CSI reporting configuration. For example, the second CSI reporting configuration can be used for CSI measurement of another TRP. When measuring the third CSI, the terminal device uses the channel measurement result of another TRP as interference, so that the measurement result of the third CSI takes into account the interference between TRPs, while the measurement result of the fourth CSI only considers the transmission of a single TRP.

[0090] B) The second non-zero power CSI-RS resource is the 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.

[0091] For example: Figure 5-3As shown, the measurement resources configured in the first CSI reporting configuration include: non-zero power CSI-RS resource 0 for channel measurement, non-zero power CSI-RS resource 1 for channel measurement, CSI-IM resource 0 for interference measurement, and CSI-IM resource 1 for interference measurement. Among them, the channel measurement of the fourth CSI is based on the non-zero power CSI-RS resource 1, and the interference measurement is based on the CSI-IM resource 1; the channel measurement of the third CSI is based on the non-zero power CSI-RS resource 0, and the 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), wherein the CSI-RS resource corresponding to the CRI included in the third CSI is used for the channel measurement of the third CSI, and the other CSI-RS resources in the non-zero power CSI-RS resource set are not used for the channel measurement of the third CSI, then the channel measured on one or more CSI-RS resources in the other CSI-RS resources can be used as interference for CSI measurement. In this way, the first CSI reporting configuration may include another TRP for measuring the non-zero power CSI-RS resources of the channel. For example, the first CSI reporting configuration includes two non-zero power CSI-RS resources, corresponding to two TRPs respectively. When measuring the third CSI, the terminal device uses the channel measurement result of another TRP as interference, so that the measurement result of the third CSI takes into account the interference between TRPs, while the measurement result of the fourth CSI only considers the transmission of a single TRP.

[0092] Furthermore, after the terminal device reports the third CSI and the fourth CSI, the network device can determine which CSI to use to obtain scheduling information based on the scheduling result (i.e., whether the transmission resources between the two TRPs overlap), thereby obtaining more accurate scheduling results and improving the throughput of downlink transmission.

[0093] ■ In an optional manner of the present application, the multiple CSIs are determined based on different channel assumptions. The multiple CSIs include a fifth CSI and a sixth CSI; wherein the fifth CSI and the sixth CSI are determined based on different channel measurement resources.

[0094] Further, optionally, the fifth CSI includes a first CRI, and the sixth CSI includes a second CRI; wherein, the information in the fifth CSI except the first CRI is determined based on the following assumption: the CSI-RS resources corresponding to the first CRI are used as channel measurement resources; the information in the sixth CSI except the second CRI is determined based on the following assumption: the CSI-RS resources corresponding to the second CRI are used as channel measurement resources.

[0095] Furthermore, the information in the fifth CSI except the first CRI can also be determined based on the following assumptions: the CSI-RS resources corresponding to the first CRI are used as channel measurement resources, and the CSI-IM resources corresponding to the first CRI are used as interference measurement resources; the information in the sixth CSI except the second CRI is determined based on the following assumptions: the CSI-RS resources corresponding to the second CRI are used as channel measurement resources, and the CSI-IM resources corresponding to the second CRI are used as interference measurement resources.

[0096] Here, in the CSI-RS resource set for channel measurement included in the first CSI reporting configuration, the CSI-RS resource corresponding to the first CRI is used as a channel measurement resource to obtain other information in the fifth CSI; in the CSI-IM resource set for interference measurement included in the first CSI reporting configuration, the CSI-IM resource corresponding to the first CRI is used as an interference measurement resource to obtain other information in the fifth CSI. In the CSI-RS resource set, the CSI-RS resource corresponding to the second CRI is used as a channel measurement resource to obtain other information in the sixth CSI; in the CSI-IM resource set, the CSI-IM resource corresponding to the second CRI is used as an interference measurement resource to obtain other information in the fifth CSI.

[0097] Here, the first CRI and the second CRI may indicate the same CSI-RS resource or different CSI-RS resources.

[0098] Here, the other information (e.g., information in the fifth CSI except the first CRI, information in the sixth CSI except the second CRI) includes at least one of RI, LI, PMI, CQI, etc. For example, RI, PMI, CQI, etc. are obtained based on the corresponding CRI.

[0099] Further, optionally, the fifth CSI and the sixth CSI may also be obtained based on different interference assumptions. For example: Figure 5-4As shown, the measurement resources of the fifth CSI include: non-zero power CSI-RS resource 0 for channel measurement (corresponding to CRI0), CSI-IM resource 0 for interference measurement, and non-zero power CSI-RS resource 1 for interference measurement; the measurement resources of the sixth CSI include: non-zero power CSI-RS resource 2 for channel measurement (corresponding to CRI1), and CSI-IM resource 2 for interference measurement. The terminal device can measure the fifth CSI and the sixth CSI based on different interference assumptions. Since the CSI measured by the same CSI-RS resource under different interference assumptions is different, for example, the obtained RI / PMI / CQI may be different, the CRI selected by the corresponding terminal device will also be different. For example, the fifth CSI is based on an interference assumption, and the measured CSI is CRI0, RI0, PMI0, CQI0; the sixth CSI is based on another interference assumption, and the measured CSI is CRI1, RI1, PMI1, CQI1, that is, the CSI-RS resource selected by the terminal device for measuring the channel may also change after considering the different interference. For example, the fifth CSI may perform interference measurement based on non-zero power CSI-RS resource 1, and the sixth CSI may not perform interference measurement based on non-zero power CSI-RS resource 1.

[0100] ■In an optional manner of the present application, the multiple CSIs are determined based on different interference assumptions. The multiple CSIs include a seventh CSI and an eighth CSI; the seventh CSI includes a first CQI, and the eighth CSI includes a second CQI, wherein the first CQI and the second CQI are calculated based on the same RI and PMI; wherein 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.

[0101] For example: the multiple CSIs specifically include RI, PMI, a first CQI, and a second CQI, wherein the seventh CSI may include RI, PMI, and a first CQI, and the eighth CSI may only include the second CQI, and both the first CQI and the second CQI are calculated based on the RI and PMI.

[0102] Here, optionally, the channel assumptions based on the first CQI and the second CQI are the same, that is, channel measurement is performed based on the same channel measurement resources, for example, the same non-zero power CSI-RS resources.

[0103] Here, optionally, the first CQI and the second CQI are based on different interference assumptions, the first CQI is obtained by interference measurement based on a third non-zero power CSI-RS resource, and the second CQI is not obtained by interference measurement based on the third non-zero power CSI-RS. At this time, when measuring the first CQI, the terminal device uses the channel measurement result of another TRP as interference, so that the measurement result of the first CQI takes into account the interference between TRPs, while the measurement result of the second CQI only considers the transmission of a single TRP.

[0104] Furthermore, after the terminal device reports the first CQI and the second CQI, the network device can determine which CQI to use to determine the MCS based on the scheduling result (i.e., whether the transmission resources between the two TRPs overlap), thereby obtaining a more accurate MCS and improving the throughput of downlink transmission.

[0105] In an optional manner of the present application, each CSI in the multiple CSIs corresponds to information of a single codeword.

[0106] Specifically, each CSI report can only assume single codeword transmission. If the CSI includes RI, the rank indicated by the RI cannot exceed 4.

[0107] In an optional manner of the present application, the terminal device receives first indication information sent by a network device, where the first indication information is used to instruct the terminal device to report the multiple CSIs.

[0108] Specifically, the first indication information can be used to indicate whether the terminal device reports the multiple CSIs or only reports a single CSI.

[0109] 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 can only report a single CSI according to the existing CSI reporting method.

[0110] Here, optionally, the first indication information may be indicated to the terminal device through the first CSI reporting configuration, that is, the first CSI reporting configuration carries the first indication information. Not limited to this, the first indication information may also be indicated to the terminal device through other signaling.

[0111] Here, the network device can allow the terminal device to report different CSIs depending on whether to perform multiple TRP joint transmission, thereby meeting different needs.

[0112] Step 402: The terminal device reports the multiple CSIs.

[0113] In an embodiment of the present application, the terminal device reports the multiple CSIs to a network device. Here, the network device may be a base station, such as a gNB.

[0114] In the embodiment of the present application, the terminal device reports the multiple CSIs, which can be implemented by one of the following methods:

[0115] Method 1: The terminal device divides each CSI of the multiple CSIs into a first CSI part and a second CSI part for reporting, 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.

[0116] In an optional manner, the multiple first CSI parts corresponding to the multiple CSIs constitute a first reporting part, and the multiple second CSI parts corresponding to the multiple CSIs constitute a second reporting part, that is, the first reporting part may include the multiple first CSI parts corresponding to the multiple CSIs, and the second reporting part may include the multiple second CSI parts corresponding to the multiple CSIs.

[0117] In one example: the first reporting part may include important information such as RI, CRI, CQI of multiple CSIs, and the second reporting part may include larger information such as PMI of multiple CSIs; or, the first reporting part may include important information such as RI, CQI, the number of non-zero wideband amplitude coefficients of multiple CSIs, and the second reporting part may include larger information such as PMI of multiple CSIs; or, the first reporting part may include some important information of the first CSI part of the multiple CSIs, and the second reporting part may include other information of the first CSI part of the multiple CSIs and all information of the second CSI part of the multiple CSIs. For example, the multiple CSIs include two CSIs, refer to the following Table 2, Table 2 lists 4 examples, where RI0, CRI0, CQI0, PMI0 represent the information included in the first CSI, and RI1, CRI1, CQI1, PMI1 represent the information included in the second CSI.

[0118]

[0119]

[0120] Table 2

[0121] Further, optionally, if the code rate of the PUSCH or PUCCH carrying the multiple second CSI parts corresponding to the multiple CSIs exceeds the first threshold value, the terminal device discards at least one of the multiple second CSI parts according to the priority order among the multiple CSIs, wherein the priority of the CSI corresponding to the discarded second CSI part is lower than the priority of the CSI corresponding to the second CSI part that is not discarded (i.e., the second CSI part of the CSI with a lower priority is discarded first). The purpose of discarding is to make the code rate of the PUSCH or PUCCH lower than or equal to the first threshold value.

[0122] Here, optionally, the first threshold value can be calculated by the terminal device, or configured to the terminal device by a network device.

[0123] Here, optionally, the priority between the multiple CSIs is determined according to at least one of the following: 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.

[0124] Here, optionally, the priority of CSI obtained by performing interference measurement based on non-zero power CSI-RS resources is lower than the priority of CSI obtained by performing interference measurement not based on non-zero power CSI-RS resources.

[0125] I) For example, the multiple CSIs include a first CSI and a second CSI, wherein the first CSI includes RI, PMI and CQI, and the second CSI only includes CQI, then the priority of the first CSI is higher than that of the second CSI.

[0126] II) For example, the multiple CSIs include a first CSI and a second CSI, wherein the first CSI is obtained by interference measurement based on CSI-IM resources and non-zero power CSI-RS resources, and the second CSI is not obtained by interference measurement based on non-zero power CSI-RS resources, but is only obtained by interference measurement based on CSI-IM, then the priority of the second CSI is higher than that of the first CSI.

[0127] Method 2: The terminal device divides the multiple CSIs into a first CSI part and a second CSI part for reporting, the first CSI part includes a third CQI, the second CSI part includes a fourth CQI, and the third CQI and the fourth CQI are determined based on different interference assumptions.

[0128] Further, if the coding rate of the PUSCH or PUCCH carrying the second CSI part exceeds the first threshold value, the terminal device discards at least one information in the second CSI part according to the priority order among multiple information in the second CSI part, wherein the priority of the discarded information is lower than the priority of the information not discarded.

[0129] For example, the first CSI part includes CRI, RI and the third CQI, and the second CSI part includes PMI and the fourth CQI. When the code rate of the PUSCH or PUCCH carrying the second CSI part exceeds the first threshold value, the terminal device may first discard the fourth CQI in the second CSI part and then discard the PMI; or first discard part of the PMI and then discard the fourth CQI. The purpose of discarding is to make the code rate of the PUSCH or PUCCH carrying the second CSI part lower than or equal to the first threshold value.

[0130] According to the technical solution of the embodiment of the present application, the terminal device can report multiple CSIs based on different channel assumptions and / or interference assumptions, corresponding to different beams or different interference situations, such as corresponding to single TRP transmission and multiple TRP joint transmission, so that the network device can perform more dynamic and flexible downlink transmission scheduling based on multiple CSIs. After the terminal device reports multiple CSIs, the network device can determine which CSI to use to determine the scheduling information based on the scheduling result (i.e., whether the transmission resources between two TRPs overlap), thereby obtaining a more accurate scheduling result and improving the throughput of downlink transmission.

[0131] Figure 6 A flow chart of a CSI receiving method provided in an embodiment of the present application is shown as follows: Figure 6 As shown, the method comprises the following steps:

[0132] Step 601: The network device sends a first CSI reporting configuration to the terminal device, where the first CSI reporting configuration is used by the terminal device to report multiple CSIs corresponding to the first CSI reporting configuration, where the multiple CSIs are determined based on different channel assumptions and / or interference assumptions, wherein each of the multiple CSIs contains at least one of the following information: CRI, RI, PMI, CQI, LI.

[0133] In an embodiment of the present application, the network device may be a base station, such as a gNB.

[0134] In an optional manner of the present application, the multiple CSIs contain the same information type.

[0135] Further, optionally, the information type included in each CSI in the multiple CSIs is specifically:

[0136] CRI, RI, PMI, CQI; or,

[0137] CRI, RI, PMI, CQI, LI; or,

[0138] CRI, RI, CQI; or,

[0139] RI, PMI, CQI; or,

[0140] RI, PMI, CQI, LI; or,

[0141] RI, CQI.

[0142] In another optional manner of the present application, different CSIs among the multiple CSIs contain different types of information.

[0143] In the embodiment of the present application, the multiple CSIs are determined based on different channel assumptions and / or interference assumptions, and specific details may refer to the relevant description in the aforementioned method.

[0144] In an optional manner of the present application, each CSI in the multiple CSIs corresponds to information of a single codeword.

[0145] In an optional manner of the present application, the network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to report the multiple CSIs.

[0146] Step 602: The network device receives the multiple CSIs.

[0147] In the embodiment of the present application, the network device receives the multiple CSIs reported by the terminal device. The manner in which the terminal device reports the multiple CSIs may refer to the relevant description of the aforementioned method.

[0148] It should be noted that the technical solution of the CSI receiving method in the embodiment of the present application can be understood with reference to the aforementioned technical solution of the CSI reporting method, and all or part of the aforementioned technical solution of the CSI reporting method can be arbitrarily combined with the technical solution of the CSI receiving method.

[0149] Figure 7 A schematic diagram of the structure of a CSI reporting device provided in an embodiment of the present application is applied to a terminal device, such as Figure 7 As shown, the CSI reporting device includes:

[0150] A determining unit 701 is configured to determine multiple CSIs corresponding to a first CSI reporting configuration, where the multiple CSIs are determined based on different channel assumptions and / or interference assumptions, wherein each of the multiple CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI;

[0151] The reporting unit 702 is configured to report the multiple CSIs.

[0152] In an optional manner, the multiple CSIs contain the same information type.

[0153] In an optional manner, the type of information included in each CSI in the multiple CSIs is specifically:

[0154] CRI, RI, PMI, CQI; or,

[0155] CRI, RI, PMI, CQI, LI; or,

[0156] CRI, RI, CQI; or,

[0157] RI, PMI, CQI; or,

[0158] RI, PMI, CQI, LI; or,

[0159] RI, CQI.

[0160] In an optional manner, the multiple CSIs include a first CSI and a second CSI;

[0161] The multiple CSIs are determined based on different channel assumptions and / or interference assumptions, including: the first CSI and the second CSI are determined based on different interference measurement resources.

[0162] In an optional manner, the interference measurement resources corresponding to the first CSI include first non-zero power CSI-RS resources, and the interference measurement resources corresponding to the second CSI do not include the first non-zero power CSI-RS resources; wherein the first non-zero power CSI-RS resources are non-zero power CSI-RS resources used for interference measurement.

[0163] In an optional manner, the multiple CSIs include third CSI and fourth CSI;

[0164] The multiple CSIs are determined based on different channel assumptions and / or interference assumptions, including:

[0165] The third CSI is determined based on the following assumption: the channel measured on the second non-zero power CSI-RS resource is used as interference for CSI measurement; the fourth CSI is determined based on the following assumption: the channel measured on the second non-zero power CSI-RS resource is not used as interference; wherein the second non-zero power CSI-RS resource is a non-zero power CSI-RS resource used for channel measurement.

[0166] 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 is associated with the first CSI reporting configuration; or,

[0167] 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.

[0168] In an optional manner, the multiple CSIs include fifth CSI and sixth CSI;

[0169] The multiple CSIs are determined based on different channel assumptions and / or interference assumptions, including: the fifth CSI and the sixth CSI are determined based on different channel measurement resources.

[0170] In an optional manner, the fifth CSI includes the first CRI, and the sixth CSI includes the second CRI; wherein,

[0171] The information in the fifth CSI except the first CRI is determined based on the following assumption: the CSI-RS resources corresponding to the first CRI are used as channel measurement resources; the information in the sixth CSI except the second CRI is determined based on the following assumption: the CSI-RS resources corresponding to the second CRI are used as channel measurement resources.

[0172] In an optional manner, the multiple CSIs include a seventh CSI and an eighth CSI; the seventh CSI includes a first CQI, and the eighth CSI includes a second CQI, wherein the first CQI and the second CQI are calculated based on the same RI and PMI;

[0173] The multiple CSIs are determined based on different channel assumptions and / or interference assumptions, including: the first CQI in the seventh CSI is obtained based on interference measurement of the third non-zero power CSI-RS resource, and the second CQI in the eighth CSI is not obtained based on interference measurement of the third non-zero power CSI-RS resource.

[0174] In an optional manner, each CSI in the multiple CSIs corresponds to information of a single codeword.

[0175] In an optional manner, the device further includes:

[0176] The receiving unit 703 is used to receive first indication information sent by a network device, where the first indication information is used to instruct the terminal device to report the multiple CSIs.

[0177] In an optional manner, the reporting unit 702 is configured to divide each CSI of the multiple CSIs 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.

[0178] In an optional manner, the device further includes:

[0179] A processing unit (not shown in the figure) is used to discard at least one of the multiple second CSI parts according to the priority order between the multiple CSIs if the code rate of the PUSCH or PUCCH carrying the multiple second CSI parts corresponding to the multiple CSIs exceeds the first threshold value, wherein the priority of the CSI corresponding to the discarded second CSI part is lower than the priority of the CSI corresponding to the second CSI part that is not discarded.

[0180] In an optional manner, the priority between the multiple CSIs is determined according to at least one of the following: 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.

[0181] In an optional manner, the priority of CSI obtained by performing interference measurement based on non-zero power CSI-RS resources is lower than the priority of CSI obtained by performing interference measurement not based on non-zero power CSI-RS resources.

[0182] In an optional manner, the reporting unit 702 is used to divide the multiple CSIs into a first CSI part and a second CSI part for reporting, the first CSI part includes a third CQI, the second CSI part includes a fourth CQI, and the third CQI and the fourth CQI are determined based on different interference assumptions.

[0183] Those skilled in the art should understand that the relevant description of the above-mentioned CSI reporting device in the embodiment of the present application can be understood by referring to the relevant description of the CSI reporting method in the embodiment of the present application.

[0184] Figure 8A schematic diagram of the structure of a CSI receiving device provided in an embodiment of the present application is applied to a network device, such as a base station, Figure 8 As shown, the CSI receiving device includes:

[0185] A sending unit 801 is configured to send a first CSI reporting configuration to a terminal device, where the first CSI reporting configuration is used by the terminal device to report multiple CSIs corresponding to the first CSI reporting configuration, where the multiple CSIs are determined based on different channel assumptions and / or interference assumptions, and each of the multiple CSIs includes at least one of the following information: CRI, RI, PMI, CQI, LI;

[0186] The receiving unit 802 is configured to receive the multiple CSIs.

[0187] In an optional manner, the multiple CSIs contain the same information type.

[0188] In an optional manner, the type of information included in each CSI in the multiple CSIs is specifically:

[0189] CRI, RI, PMI, CQI; or,

[0190] CRI, RI, PMI, CQI, LI; or,

[0191] CRI, RI, CQI; or,

[0192] RI, PMI, CQI; or,

[0193] RI, PMI, CQI, LI; or,

[0194] RI, CQI.

[0195] In an optional manner, each CSI in the multiple CSIs corresponds to information of a single codeword.

[0196] In an optional manner, the sending unit 801 is further used to send first indication information to the terminal device, where the first indication information is used to instruct the terminal device to report the multiple CSIs.

[0197] Those skilled in the art should understand that the relevant description of the above-mentioned CSI receiving device in the embodiment of the present application can be understood by referring to the relevant description of the CSI reporting method and the CSI receiving method in the embodiment of the present application.

[0198] Fig. 9 900 is a schematic structural diagram of a communication device provided in an embodiment of the present application. The communication device may be a terminal device or a network device. Fig. 9The communication device 900 shown includes a processor 910, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0199] Alternatively, if Fig. 9 As shown, the communication device 900 may further include a memory 920. The processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.

[0200] The memory 920 may be a separate device independent of the processor 910 , or may be integrated into the processor 910 .

[0201] Alternatively, if Fig. 9 As shown, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0202] The transceiver 930 may include a transmitter and a receiver. The transceiver 930 may further include an antenna, and the number of antennas may be one or more.

[0203] Optionally, the communication device 900 may specifically be a network device of an embodiment of the present application, and the communication device 900 may implement corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0204] Optionally, the communication device 900 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 900 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described again for the sake of brevity.

[0205] Fig.10 It is a schematic structural diagram of the chip of an embodiment of the present application. Fig.10 The chip 1000 shown includes a processor 1010, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0206] Alternatively, if Fig.10 As shown, the chip 1000 may further include a memory 1020. The processor 1010 may call and run a computer program from the memory 1020 to implement the method in the embodiment of the present application.

[0207] The memory 1020 may be a separate device independent of the processor 1010 , or may be integrated into the processor 1010 .

[0208] 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 specifically, may obtain information or data sent by other devices or chips.

[0209] 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 specifically, may output information or data to other devices or chips.

[0210] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0211] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0212] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0213] Fig.11 1 is a schematic block diagram of a communication system 1100 provided in an embodiment of the present application. Fig.11 As shown, the communication system 1100 includes a terminal device 1110 and a network device 1120 .

[0214] Among them, the terminal device 1110 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1120 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0215] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0216] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0217] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0218] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0219] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0220] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0221] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0222] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0223] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0224] The embodiment of the present application also provides a computer program.

[0225] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0226] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0227] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0228] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0229] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0230] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0231] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0232] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0233] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for reporting channel state information (CSI), the method comprising: The terminal device determines multiple CSIs corresponding to the first CSI reporting configuration, where the multiple CSIs are determined based on different channel assumptions and / or interference assumptions, wherein each of the multiple CSIs includes 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; The terminal device divides each CSI of the multiple CSIs into a first CSI part and a second CSI part for reporting, 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; If the code rate of the physical uplink shared channel PUSCH or the physical uplink control channel PUCCH carrying the multiple second CSI parts corresponding to the multiple CSIs exceeds a first threshold value, the terminal device discards at least one of the multiple second CSI parts according to the priority order among the multiple CSIs, and the priority of the CSI corresponding to the discarded second CSI part is lower than the priority of the CSI corresponding to the second CSI part that is not discarded; wherein the priority between the multiple CSIs is determined according to at least one of the following: 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.

2. The method according to claim 1, wherein: The multiple CSIs include the same information type.

3. The method according to claim 2, wherein: The information type included in each CSI in 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.

4. The method according to any one of claims 1 to 3, wherein: The multiple CSIs include a first CSI and a second CSI; The multiple CSIs are determined based on different channel assumptions and / or interference assumptions, including: the first CSI and the second CSI are determined based on different interference measurement resources.

5. The method according to claim 4, wherein: The interference measurement resources corresponding to the first CSI include first non-zero power CSI-RS resources, and the interference measurement resources corresponding to the second CSI do not include the first non-zero power CSI-RS resources; wherein the first non-zero power CSI-RS resources are non-zero power CSI-RS resources used for interference measurement.

6. The method according to any one of claims 1 to 3, wherein: The multiple CSIs include third CSI and fourth CSI; The multiple CSIs are determined based on different channel assumptions and / or interference assumptions, including: The third CSI is determined based on the following assumption: the channel measured on the second non-zero power CSI-RS resource is used as interference for CSI measurement; the fourth CSI is determined based on the following assumption: the channel measured on the second non-zero power CSI-RS resource is not used as interference; wherein the second non-zero power CSI-RS resource is a non-zero power CSI-RS resource used for channel measurement.

7. The method according to 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 is associated 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.

8. The method according to any one of claims 1 to 3, wherein: The plurality of CSIs include fifth CSI and sixth CSI; The multiple CSIs are determined based on different channel assumptions and / or interference assumptions, including: the fifth CSI and the sixth CSI are determined based on different channel measurement resources.

9. The method according to claim 8, wherein: The fifth CSI includes the first CRI, and the sixth CSI includes the second CRI; wherein, The information in the fifth CSI except the first CRI is determined based on the following assumption: the CSI-RS resources corresponding to the first CRI are used as channel measurement resources; the information in the sixth CSI except the second CRI is determined based on the following assumption: the CSI-RS resources corresponding to the second CRI are used as channel measurement resources.

10. The method according to any one of claims 1 to 3, wherein: The multiple CSIs include a seventh CSI and an eighth CSI; the seventh CSI includes a first CQI, and the eighth CSI includes a second CQI, wherein 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 assumptions and / or interference assumptions, including: the first CQI in the seventh CSI is obtained based on interference measurement of the third non-zero power CSI-RS resource, and the second CQI in the eighth CSI is not obtained based on interference measurement of the third non-zero power CSI-RS resource.

11. The method according to any one of claims 1 to 3, wherein: Each CSI in the multiple CSIs corresponds to information of a single codeword.

12. The method according to claim 11, wherein: The method further comprises: The terminal device receives first indication information sent by a network device, where the first indication information is used to instruct the terminal device to report the multiple CSIs.

13. The method according to claim 1, wherein: The priority of CSI obtained by performing interference measurement based on non-zero power CSI-RS resources is lower than the priority of CSI obtained by performing interference measurement not based on non-zero power CSI-RS resources.

14. The method according to any one of claims 1 to 3, 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.

15. A CSI reporting device, comprising: A determining unit, configured to determine a plurality of CSIs corresponding to a first CSI reporting configuration, wherein the plurality of CSIs are determined based on different channel assumptions and / or interference assumptions, wherein each of the plurality of CSIs comprises at least one of the following information: CRI, RI, PMI, CQI, LI; a reporting unit, configured to report the plurality of CSIs, wherein the reporting unit is configured to divide each CSI of the plurality of CSIs into a first CSI part and a second CSI part for reporting, the information length of the first CSI part being fixed, and the information length of the second CSI part being determined according to the information content of the first CSI part; and a processing unit, configured to discard at least one second CSI part among the multiple second CSI parts according to a priority order among the multiple CSIs if a code rate of a PUSCH or a PUCCH carrying multiple second CSI parts corresponding to the multiple CSIs exceeds a first threshold value, wherein the priority of the CSI corresponding to the discarded second CSI part is lower than the priority of the CSI corresponding to the second CSI part that is not discarded; The priorities among the multiple CSIs are determined according to at least one of the following: 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.

16. The device according to claim 15, wherein: The multiple CSIs include the same information type.

17. The device according to claim 16, wherein: The information type included in each CSI in 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.

18. The device according to any one of claims 15 to 17, wherein: The multiple CSIs include a first CSI and a second CSI; The multiple CSIs are determined based on different channel assumptions and / or interference assumptions, including: the first CSI and the second CSI are determined based on different interference measurement resources.

19. The device according to claim 18, wherein: The interference measurement resources corresponding to the first CSI include first non-zero power CSI-RS resources, and the interference measurement resources corresponding to the second CSI do not include the first non-zero power CSI-RS resources; wherein the first non-zero power CSI-RS resources are non-zero power CSI-RS resources used for interference measurement.

20. The device according to any one of claims 15 to 17, wherein: The multiple CSIs include third CSI and fourth CSI; The multiple CSIs are determined based on different channel assumptions and / or interference assumptions, including: The third CSI is determined based on the following assumption: the channel measured on the second non-zero power CSI-RS resource is used as interference for CSI measurement; the fourth CSI is determined based on the following assumption: the channel measured on the second non-zero power CSI-RS resource is not used as interference; wherein the second non-zero power CSI-RS resource is a non-zero power CSI-RS resource used for channel measurement.

21. The device according to claim 20, 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 is associated 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.

22. The device according to any one of claims 15 to 17, wherein: The plurality of CSIs include fifth CSI and sixth CSI; The multiple CSIs are determined based on different channel assumptions and / or interference assumptions, including: the fifth CSI and the sixth CSI are determined based on different channel measurement resources.

23. The device according to claim 22, wherein: The fifth CSI includes the first CRI, and the sixth CSI includes the second CRI; wherein, The information in the fifth CSI except the first CRI is determined based on the following assumption: the CSI-RS resources corresponding to the first CRI are used as channel measurement resources; the information in the sixth CSI except the second CRI is determined based on the following assumption: the CSI-RS resources corresponding to the second CRI are used as channel measurement resources.

24. The device according to any one of claims 15 to 17, wherein: The multiple CSIs include a seventh CSI and an eighth CSI; the seventh CSI includes a first CQI, and the eighth CSI includes a second CQI, wherein 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 assumptions and / or interference assumptions, including: the first CQI in the seventh CSI is obtained based on interference measurement of the third non-zero power CSI-RS resource, and the second CQI in the eighth CSI is not obtained based on interference measurement of the third non-zero power CSI-RS resource.

25. The device according to claim 24, wherein: Each CSI in the multiple CSIs corresponds to information of a single codeword.

26. The device according to claim 25, wherein The device also includes: The receiving unit is used to receive first indication information sent by a network device, where the first indication information is used to instruct the device to report the multiple CSIs.

27. The device according to claim 15, wherein: The priority of CSI obtained by performing interference measurement based on non-zero power CSI-RS resources is lower than the priority of CSI obtained by performing interference measurement not based on non-zero power CSI-RS resources.

28. The device according to claim 26, wherein The reporting unit is used to divide the multiple CSIs into a first CSI part and a second CSI part for reporting, the first CSI part includes a third CQI, the second CSI part includes a fourth CQI, and the third CQI and the fourth CQI are determined based on different interference assumptions.

29. A terminal device, comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 3.

30. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 3.

31. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 3.

32. A computer program product comprising computer program instructions, the computer program instructions causing a computer to execute the method as claimed in any one of claims 1 to 3.

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