Csi feedback method, apparatus, device and readable storage medium

Abstract

The application discloses a CSI feedback method, device, equipment and readable storage medium, and the method comprises the following steps: a terminal feeds back one or more CSI reports to a network side device, wherein the CSI report comprises a first domain corresponding to a first measurement assumption; wherein the first measurement assumption comprises X STRP measurement assumptions and one joint transmission measurement assumption, wherein X is a natural number; or the first measurement assumption is one of all STRP measurement assumptions and joint transmission measurement assumptions.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a channel state information (CSI) feedback method, apparatus, device, and readable storage medium. Background Technology

[0002] In multi-TRP / multi-panel scenarios, this can increase transmission reliability and throughput performance. For example, the terminal can receive the same or different data from multiple TRPs. Inter-TRP communication can be categorized into ideal backhaul and non-ideal backhaul. In non-ideal backhaul scenarios, there is significant latency in information exchange between multiple TRPs, making independent scheduling more suitable. Acknowledgments (ACK), negative acknowledgments (NACK), and CSI reports are fed back to each TRP separately. This is typically applicable to Downlink Control Information (DCI) scheduling, where each TRP transmits its own Physical Downlink Control Channel (PDCCH), and each PDCCH schedules its own Physical Downlink Shared Channel (PDSCH). Multiple Control Resource Sets (CORESETs) configured for the terminal are associated with different Radio Resource Control (RRC) parameter control resource set pool indices (CORESET PoolIndex), corresponding to different TRPs. The multiple PDSCHs scheduled by multiple DCIs may not overlap, partially overlap, or completely overlap in time-frequency resources. On overlapping time-frequency resources, each TRP performs independent precoding according to its own channel, and the terminal receives multi-layer data streams belonging to multiple PDSCHs using non-coherent joint transmission (NCJT).

[0003] In an ideal backhaul scenario, multiple TRPs can exchange scheduling information and UE feedback information in real time. Besides scheduling multiple PDSCHs through multiple DCIs as described above, single DCIs can also schedule PDSCHs, including the following transmission schemes:

[0004] (1) Space Division Multiplexing (SDM): Different data layers of the same Transport Block (TB) come from different TRPs of NCJT.

[0005] (2) Frequency Division Multiplexing (FDM): Different frequency domain resources mapped to the same TB and the same Redundancy Version (RV) originate from different TRPs, or different RVs of the same TB are mapped to different frequency domain resources and originate from different TRPs.

[0006] (3) Time division multiplexing (TDM): Multiple repetitions of different RVs in the same TB come from different TRPs, such as repetition within one time slot or repetition across multiple time slots.

[0007] At this point, ACK / NACK feedback and CSI reports can be sent to any TRP.

[0008] However, existing CSI report mappings are primarily designed for a single measurement assumption and cannot adequately support multiple measurement assumptions. Summary of the Invention

[0009] This application provides a CSI feedback method, apparatus, device, and readable storage medium that can solve the problem of how terminals report CSI reports in scenarios with different types of measurement assumptions.

[0010] Firstly, a Channel State Information (CSI) feedback method is provided, including:

[0011] The terminal sends one or more CSI reports to the network-side device, and the CSI reports include a first field corresponding to the first measurement hypothesis;

[0012] The first measurement hypothesis includes: X single-transmitter-receiver point STRP measurement hypotheses and 1 joint transmission measurement hypothesis, where X is a natural number; or, the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses.

[0013] Secondly, a CSI feedback method is provided, including:

[0014] The network-side device receives one or more CSI reports, the CSI reports including a first field corresponding to a first measurement hypothesis;

[0015] The first measurement hypothesis includes: X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, where X is a positive integer; or, the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses.

[0016] Thirdly, a CSI feedback device is provided for use in a terminal, including:

[0017] The first sending module is configured to send one or more CSI reports to the network-side device, wherein the first field in the CSI report represents a first measurement hypothesis;

[0018] The first measurement hypothesis includes: X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, where X is a natural number; or, the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses.

[0019] Fourthly, a CSI feedback device is provided for use in network-side equipment, comprising:

[0020] The second receiving module is configured to receive one or more CSI reports, wherein the CSI reports include a first field corresponding to the first measurement hypothesis;

[0021] The first measurement hypothesis includes: X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, where X is a positive integer; or, the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses.

[0022] Fifthly, a terminal is provided, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, performs the steps of the method described in the first aspect.

[0023] In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to perform the steps of the method described in the first aspect.

[0024] A seventh aspect provides a network-side device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the method described in the second aspect.

[0025] Eighthly, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to implement the steps of the method described in the second aspect when executed.

[0026] A ninth aspect provides a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method as described in the first or second aspect.

[0027] In a tenth aspect, a computer program / program product is provided, the computer program / program product being stored in a non-volatile storage medium, the computer program / program product being executed by at least one processor to implement the steps of the processing method as described in the first or second aspect.

[0028] Eleventhly, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the processing method as described in the first or second aspect.

[0029] In this embodiment of the application, the terminal can report the content of one or more measurement assumptions of various measurement assumption types to the network-side device through the first field of the CSI report, which reduces the feedback overhead of the CSI report and can better support MTRP transmission. Attached Figure Description

[0030] Figure 1 This is a structural diagram of a wireless communication system applicable to the embodiments of this application;

[0031] Figure 2 This is one of the flowcharts of the CSI feedback method provided in the embodiments of this application;

[0032] Figure 3 This is the second flowchart of the CSI feedback method provided in the embodiments of this application;

[0033] Figure 4 This is one of the schematic diagrams of the CSI feedback device provided in the embodiments of this application;

[0034] Figure 5 This is a second schematic diagram of the CSI feedback device provided in the embodiments of this application;

[0035] Figure 6 This is a schematic diagram of the terminal provided in an embodiment of this application;

[0036] Figure 7 This is a schematic diagram of the network-side device provided in an embodiment of this application. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0038] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specified order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0039] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to applications other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0040] See Figure 1The figure shows a structural diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), etc. Wearable devices include smartwatches, wristbands, headphones, glasses, etc. It should be noted that the specific type of terminal 11 is not limited in this embodiment.

[0041] Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), radio access network node, or any other suitable term in the field. As long as the same technical effect is achieved, the base station is not limited to the specified technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0042] The following description, in conjunction with the accompanying drawings, details a CSI feedback method, apparatus, device, and readable storage medium provided in this application through some embodiments and application scenarios.

[0043] See Figure 2 This application provides a CSI feedback method, the specific steps of which include: step 201.

[0044] Step 201: The terminal sends one or more CSI reports to the network-side device, wherein the CSI report includes a first field corresponding to the first measurement hypothesis;

[0045] The first measurement hypothesis includes: X single TRP (STRP) measurement hypotheses and 1 joint transmission measurement hypothesis, where X is a natural number, i.e., X = 0, 1, 2, 3...; or, the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses.

[0046] Optionally, some CSI information or CSI content obtained from the first measurement assumption (such as aliasing, channel state information reference signal resource indicator, precoding matrix indicator, etc.) can be mapped to the first domain.

[0047] Optionally, the first measurement assumption includes one joint transmission measurement assumption; or, the first measurement assumption includes one STRP measurement assumption and one joint transmission measurement assumption; or, the first measurement assumption includes two STRP measurement assumptions and one joint transmission measurement assumption.

[0048] Optionally, the first measurement hypothesis is the optimal one among all STRP measurement hypotheses and joint transmission measurement hypotheses. For example, among STRP measurement hypothesis 1, STRP measurement hypothesis 2, STRP measurement hypothesis 3, joint transmission measurement hypothesis 1, and joint transmission measurement hypothesis 2, if STRP measurement hypothesis 3 is the optimal measurement hypothesis, then STRP measurement hypothesis 3 is taken as the first measurement hypothesis.

[0049] Joint transmission (JT) in this article can include non-coherent joint transmission (NCJT) and coherent joint transmission (CJT).

[0050] In one embodiment of this application, when the first field is a rank indicator (RI) field and the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the RI field is determined according to one or more of the following:

[0051] (1) Number of antenna ports, for example, 1 antenna port, 2 antenna ports, 4 antenna ports, and more than 4 antenna ports;

[0052] (2) The number of rank indicators allowed for a single TRP transmission and the corresponding bit width length;

[0053] (3) The bit width length corresponding to the number of rank indicators allowed for joint transmission;

[0054] (4) The number of all rank indicators supported by the terminal;

[0055] (5) The number of all rank indication combinations supported by the terminal.

[0056] In one embodiment of this application, the bit width of the RI field is one of the following:

[0057] (1) A first value, which includes: 0, or or or or or

[0058] Taking N=2 as an example, when each of the two TRPs has only one antenna port, the bit width of the RI field is 0.

[0059] When one TRP has only one antenna port and another TRP has two antenna ports, the bitwidth is:

[0060]

[0061] When one TRP has two antenna ports and another TRP has two antenna ports, the bitwidth is:

[0062]

[0063] When one TRP has two antenna ports and another TRP has four antenna ports, the bitwidth is:

[0064]

[0065] When one TRP has four antenna ports and another TRP has four antenna ports, the bitwidth is:

[0066]

[0067] When each TRP has more than four antenna ports, the bitwidth is:

[0068]

[0069] (2) The second value, which includes: 0 or or or or or Where N RI_jt Indicates the number of all supported rank indicator combinations;

[0070] (3) A third value, wherein the third value includes: 0 or Where N RI Indicates the number of all supported rank indicators or combinations of rank indicators;

[0071] in, This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission; This indicates the bit width length corresponding to the number of rank indicators allowed for the Nth TRP STRP transmission. This represents the bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission, where N is greater than or equal to 2.

[0072] It is understandable that the Nth TRP refers to the Nth TRP. For example, if N equals 2, it is identified as the second TRP or the second TRP.

[0073] In one embodiment of this application, when the bit width of the RI field is a first value, if the first measurement hypothesis is the STRP measurement hypothesis, then one codepoint of the RI field corresponds to one rank indicator; if the first measurement hypothesis is the joint transmission measurement hypothesis, then the first bit width of the RI field corresponds to one rank indicator. The bit corresponds to a rank indicator of the first TRP, the preceding After bit The bit corresponds to a rank indicator of the Nth TRP; or the first bit of the RI field. The bit corresponds to a rank indicator of the first TRP, and the latter part of the RI field Each bit corresponds to a rank indicator of the Nth TRP.

[0074] In one embodiment of this application, when the bit width of the RI field is a second value, if the first measurement hypothesis is the STRP measurement hypothesis, then one code point of the RI field corresponds to one rank indicator; if the first measurement hypothesis is the joint transmission measurement hypothesis, then one code point of the RI field corresponds to a set of rank indicators.

[0075] For example, as shown in Table 1, when the joint transmission measurement hypothesis is reported, if the index value of the RI field is 2, it means that the set of rank indicators for the JT transmission is 2 and 1.

[0076] Table 1: Correspondence between indexes and a set of rank indicators.

[0077] Index Rank Indicator 0 (1,1) 1 (1,2) 2 (2,1) 3 (2,2) … …

[0078] In one embodiment of this application, when the bit width of the RI field is a third value, one code point of the RI field corresponds to one rank indicator or a set of rank indicators.

[0079] For example, as shown in Table 2, when the index value of the RI field is 2, it indicates a STRP transmission with a rank of 3. When the index value of the RI field is 10, it indicates a JT transmission with a rank of 2 and 1.

[0080] Table 2: Correspondence between index and rank indicator.

[0081]

[0082]

[0083] In one embodiment of this application, when the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the Channel State Information Reference Signal Resource Indicator (CSI-RSresource indicator, CRI) field in the CSI report is: Where K s This indicates the number of channel measurement resources (CMRs) that are reported and associated, where N represents the number of CMR pairs that are reported and associated.

[0084] One of the CMR pairs is used to measure a joint transmission measurement hypothesis, where N can represent the number of joint transmission measurement hypotheses that need to be measured.

[0085] In one embodiment of this application, the method further includes:

[0086] If the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the terminal indicates to the network-side device, through the first field of the CSI report, that the type of the first measurement hypothesis is either a STRP measurement hypothesis or a joint transmission measurement hypothesis.

[0087] The first field is one of the following:

[0088] (1) CRI domain;

[0089] For example: K sWhen =2 and N=1, the CRI field adopts the aforementioned definition method, CRI0 represents CMR1, CRI1 represents CMR2, and CRI2 represents both CMR1 and CMR2. Therefore, when a user reports CRI2, it indicates the joint transmission measurement assumption.

[0090] (2) RI domain;

[0091] The RI field adopts the definition method described above.

[0092] Alternatively, it can be indicated by other combinations of RI, such as: K s When RI = 2 and N = 1, if the user reports RI1 = 0 and RI2 = 1, where only RI2 is a valid value, then the user reports the STRP measurement hypothesis and the corresponding TRP for RI2; if the user reports RI1 = 1 and RI2 = 1, where both are valid values, then the user reports the joint transmission measurement hypothesis.

[0093] The valid values ​​can be determined based on one or more of the following: RI restrictions, number of ports, and RI combinations supported by joint transmission.

[0094] (3) Newly defined indicator field.

[0095] For example: the newly defined indicator field is the Joint Transmission Indicator field (JT Indicator field), when K s When N=2 and N=1, the CRI field is defined as CRI0 representing CMR1 and CRI1 representing CMR2. Therefore, when the user reports CRI0 and it is a STRP transmission assumption, the joint transmission indication field is 0, and when the user reports CRI0 and it is a joint transmission assumption, the joint transmission indication field is 1.

[0096] In one embodiment of this application, when the first measurement hypothesis includes X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, the number of RI fields in the CSI report is:

[0097] (1) X+1, where X RI fields correspond to X STRP measurement hypotheses, and 1 RI field corresponds to 1 joint transmission measurement hypothesis;

[0098] (2) X+2, where X RI fields correspond to X STRP measurement hypotheses, and 2 RI fields correspond to 1 joint transmission measurement hypothesis;

[0099] (3) 1, of which 1 RI field corresponds to X STRP measurement hypotheses and 1 joint transmission measurement hypothesis.

[0100] (4) 2, of which 1 RI field corresponds to X STRP measurement hypotheses and 1 RI field corresponds to 1 joint transmission measurement hypothesis.

[0101] In one embodiment of this application, when the number of RI fields is X+1 or X+2, the mapping order of the joint transmission measurement hypothesis and the STRP measurement hypothesis in the RI fields includes: the joint transmission measurement hypothesis takes precedence over the STRP measurement hypothesis, or the STRP measurement hypothesis takes precedence over the joint transmission measurement hypothesis.

[0102] In one embodiment of this application, when the number of RI fields is X+1, the first RI field corresponds to one joint transmission measurement hypothesis, and the bit width of the first RI field is determined according to one or more of the following:

[0103] (1) Number of antenna ports, for example, 1 antenna port, 2 antenna ports, 4 antenna ports, and more than 4 antenna ports;

[0104] (2) The bit width length corresponding to the number of rank indicators allowed for joint transmission;

[0105] (3) The number of all rank indicators supported by the terminal;

[0106] (4) The number of all rank indication combinations supported by the terminal.

[0107] In one embodiment of this application, the bit width of the first RI field is one of the following:

[0108] (1) The fourth value, which includes: 0 or or or or or

[0109] in This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission;

[0110] (2) The fifth value, which includes: 0 or or or or or Where N RI_jt This indicates the number of all supported rank indicator combinations.

[0111] In one embodiment of this application, when the bit width of the first RI field is a fourth value:

[0112] (1) The first RI domain before The bit corresponds to a rank indicator of the first TRP, the preceding After bit The bit corresponds to a rank indicator of the Nth TRP;

[0113] (2) Alternatively, the first RI field's front The bit corresponds to a rank indicator of the first TRP, and the last bit of the first RI field The bit corresponds to a rank indicator of the second TRP;

[0114] (3) Alternatively, if the bit width of the first RI field is the fifth value, one codepoint of the first RI field corresponds to a set of rank indicators.

[0115] Where N is greater than or equal to 2.

[0116] For example, as shown in Table 3, when the NCJT measurement hypothesis is reported, if the index value of the RI field indicator is 2, it means that the set of rank indicators transmitted by NCJT is 2 and 1.

[0117] Table 3: Correspondence between index and rank indicator.

[0118] Index Rank Indicator 0 (1,1) 1 (1,2) 2 (2,1) 3 (2,2) … …

[0119] In one embodiment of this application, when the number of RI fields is X+1 or X+2, and X=1, the second RI field corresponds to one STRP measurement hypothesis, and the bit width of the second RI field is determined according to one or more of the following:

[0120] (1) Number of antenna ports, for example, 1 antenna port, 2 antenna ports, 4 antenna ports, and more than 4 antenna ports;

[0121] (2) The number of rank indicators allowed for STRP transmission corresponds to the bit width length.

[0122] In one embodiment of this application, the bit width of the second RI field is a sixth value;

[0123] The sixth value includes: 0 or or or or or

[0124] in, This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed for the Nth TRP STRP transmission;

[0125] Where N is greater than or equal to 2.

[0126] In one embodiment of this application, when the number of RI fields is one, the bit width of the RI field is determined according to one or more of the following:

[0127] (1) Number of antenna ports, for example, 1 antenna port, 2 antenna ports, 4 antenna ports, and more than 4 antenna ports;

[0128] (2) The number of rank indicators allowed for STRP transmission and the corresponding bit width length;

[0129] (3) The number of all rank indication combinations supported by the terminal;

[0130] (4) The number of rank indicators allowed for joint transmission and the corresponding bit width length.

[0131] In one embodiment of this application, the bit width of the RI field is one of the following:

[0132] (1) The seventh value, which includes: 0 or or or or or

[0133] (2) The eighth value, which includes: 0 or or or or or

[0134] Where N RI_jt Indicates the number of all supported rank indicator combinations;

[0135] This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission; This indicates the bit width length corresponding to the number of rank indicators allowed for NTRP STRP transmissions. This indicates the bit width length corresponding to the number of rank indicators allowed during NTRP joint transmission;

[0136] Where N is greater than or equal to 2.

[0137] In one embodiment of this application, when the number of RI fields is X+1 or X+2, and X>1, each of the X RI fields corresponds to a STRP measurement hypothesis, and the bit width of each of the X RI fields is determined according to one or more of the following:

[0138] (1) Number of antenna ports, for example, 1 antenna port, 2 antenna ports, 4 antenna ports, and more than 4 antenna ports;

[0139] (2) The number of rank indicators allowed for STRP transmission corresponds to the bit width length.

[0140] In one embodiment of this application, the number of RI fields is two, the first RI field corresponds to X STRP measurement hypotheses, and the second RI field corresponds to one joint transmission measurement hypothesis. The bit width of the first RI field is determined according to one or more of the following:

[0141] (1) The number of antenna ports per TRP, for example, 1 antenna port, 2 antenna ports, 4 antenna ports, and more than 4 antenna ports;

[0142] (2) The bit width length corresponding to the number of rank indicators allowed for each TRP transmission, or the bit width length corresponding to the sum of the number of rank indicators allowed for all TRP transmissions;

[0143] (3) The value of X;

[0144] In one embodiment of this application, the method further includes:

[0145] Receive higher-level signaling, which is used to restrict the first field in the CSI report, wherein the higher-level signaling corresponds one-to-one with TRP, or the higher-level signaling has a mapping relationship with CMR or CMR group.

[0146] For example, higher-level signaling can be typeI-SinglePanel-ri-Restriction, ri-Restriction, typeII-RI-Restriction, typeII-PortSelectionRI-Restriction, typeII-RI-Restriction-r16, and typeII-PortSelectionRI-Restriction-r16.

[0147] In one embodiment of this application, the way the STRP measurement hypothesis is mapped to the CSI report includes:

[0148] The Precoding Matrix Indicator (PMI) and Channel Quality Indicator (CQI) in the CSI report are granular at the wideband level. The mapping content of the STRP measurement assumption in the CSI report includes one or more of the following: CRI, newly defined indicator, RI, layer indicator (LI), PMI and CQI.

[0149] For example, if the STRP measurement hypothesis is selected and the PMI and CQI granularity is wideband, the mapping content includes: (i) first CRI, first NCJT indication, first RI, first LI, first PMI, first CQI; or, (ii) first CRI, first RI, first LI, first PMI, first CQI;

[0150] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0151] The PMI and CQI granularity in the CSI report is bandwidth. The mapping content of the joint transmission measurement assumption in the CSI report includes one or more of the following: one or more CRIs, newly defined indication fields, one or more RIs, one or more LIs, one or more PMIs, and one or more CQIs.

[0152] For example, if NCJT measurement hypothesis reporting is selected and PMI and CQI granularity is wideband, the mapping content includes: (i) first CRI, first NCJT indication, first RI, second RI, first LI, second LI, first PMI, second PMI, first CQI, second CQI; or, (ii) first CRI, second CRI, first RI, second RI, first LI, second LI, first PMI, second PMI, first CQI, second CQI; or, (iii) NCJT CRI, first RI, second RI, first LI, second LI, first PMI, second PMI, first CQI, second CQI.

[0153] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0154] The PMI and CQI granularity in the CSI report is bandwidth, and the mapping content of the joint transmission measurement assumption in the CSI report includes: Part 1 and Part 2.

[0155] The first part includes one or more of the following: a CRI, a newly defined instruction, multiple RIs, a LI, a PMI, and a CQI; the second part includes one or more of the following: a LI, a PMI, and a CQI.

[0156] or,

[0157] The first part includes one or more of the following: multiple CRIs, multiple RIs, one LI, one PMI, and one CQI; the second part includes one or more of the following: one LI, one PMI, and one CQI.

[0158] or,

[0159] The first part includes one or more of the following: a CRI, multiple RIs, a LI, a PMI, and a CQI; the second part includes one or more of the following: a LI, a PMI, and a CQI.

[0160] For example, if the NCJT measurement hypothesis is selected and the PMI and CQI granularity is wideband, then the CSI report will be divided into two parts (part 1 and part 2).

[0161] (i) Part 1 mapping content includes: first CRI, first NCJT indication, first RI, second RI, first LI, first PMI, first CQI; Part 2 mapping content includes: second LI, second PMI, second CQI; or, (ii) Part 1 mapping content includes: first CRI, second CRI, first RI, second RI, first LI, first PMI, first CQI; Part 2 mapping content includes: second LI, second PMI, second CQI; or, (iii) Part 1 mapping content includes: NCJT CRI, first RI, second RI, first LI, first PMI, first CQI; Part 2 mapping content includes: second LI, second PMI, second CQI.

[0162] Alternatively, the way the STRP measurement assumption is mapped to the CSI report includes:

[0163] The PMI and CQI granularity in the CSI report are sub-bands, and the mapping content of the STRP measurement hypothesis in the CSI report includes a first part, a second part, and a third part.

[0164] The first part includes one or more of the following: a CRI, a newly defined indicator, an RI, a wideband CQI for first TB, a subband CQI for first TB, and a non-zero wideband amplitude coefficient; the second part includes one or more of the following: a wideband CQI for second TB, an LI, and a wideband PMI; the third part includes one or more of the following: an even subband CQI for second TB, an even subband PMI, an odd subband CQI for second TB, and an odd subband PMI.

[0165] or,

[0166] The first part includes one or more of the following: a CRI, an RI, a wideband CQI for the first transport block (TB), a subband CQI for the first transport block (TB), and a non-zero wideband amplitude coefficient; the second part includes one or more of the following: a wideband CQI for the second transport block (TB), an LI, and a wideband PMI; the third part includes one or more of the following: an even subband CQI for the second transport block (TB), an even subband PMI for the second transport block (TB), an odd subband CQI for the second transport block (TB), and an odd subband PMI for the second transport block (TB).

[0167] For example, if the STRP measurement hypothesis is selected and the PMI and CQI granularity is subband, then the CSI report will be divided into 2 parts (part1, part2 wideband, part2 subband).

[0168] (i) Part 1 mapping content includes: first CRI, first NCJT indication, first RI, first wideband CQI for first TB, first subband CQI for first TB, first non-zero wideband amplitude coefficient; Part 2 wideband mapping content includes: first wideband CQI for second TB, first LI, first wideband PMI; Part 2 subband mapping content includes: first even subband CQI for second TB, first even subband PMI, first odd subband CQI for second TB, first odd subband PMI;

[0169] (ii) Part 1 mapping content includes: first CRI, first RI, first wideband CQI for first TB, first subband CQI for first TB, first non-zero wideband amplitude coefficient; Part 2 wideband mapping content includes: first wideband CQI for second TB, first LI, first wideband PMI; Part 2 subband mapping content includes: first even subband CQI for second TB, first even subband PMI, first odd subband CQI for second TB, first odd subband PMI;

[0170] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0171] The PMI and CQI granularity in the CSI report are sub-bands, and the mapping content of the NCJT measurement false in the CSI report includes a first part, a second part, and a third part.

[0172] The first part includes one or more of the following: a CRI, a newly defined indicator, one or more RIs, a wideband CQI for the first TB, a subband CQI for the first TB, and one or more non-zero wideband amplitude coefficients; the second part includes one or more of the following: a wideband CQI for the second TB, one or more LIs, one or more wideband precoding matrix indicators (PMIs), and a wideband CQI for multiple TBs; the third part includes one or more of the following: an even-numbered subband CQI for the second TB, a multiple even-numbered subband precoding matrix indicators, a multiple even-numbered subband CQI for the second TB, a multiple odd-numbered subband CQI for the second TB, a multiple odd-numbered subband CQI for the second TB, an odd-numbered subband CQI for the first TB, and an odd-numbered subband CQI for the second TB;

[0173] or,

[0174] The first part includes one or more of the following: one or more CRIs, one or more RI fields, bandwidth channel quality indicator of the first transport block, subband channel quality indicator of the first transport block, and one or more non-zero wideband amplitude coefficients; the second part includes one or more of the following: bandwidth channel quality indicator of the second transport block, one or more LIs, multiple bandwidth precoding matrix indicators, bandwidth channel quality indicator of the first transport block, and bandwidth channel quality indicator of the second transport block; the third part includes one or more of the following: even subband channel quality indicator of the second transport block, multiple even subband coding matrix indicators, even subband channel quality indicator of the first transport block, even subband channel quality indicator of the second transport block, one even subband coding matrix indicator, odd subband channel quality indicator of the second transport block, multiple odd subband coding matrix indicators, and multiple odd subband channel quality indicators of the transport blocks.

[0175] or,

[0176] The first part includes one or more of the following: CRI, one or more RI, bandwidth channel quality indicator of the first transport block, subband channel quality indicator of the first transport block, and one or more non-zero wideband amplitude coefficients; the second part includes one or more of the following: bandwidth channel quality indicators of multiple second transport blocks, one or more LI, one or more bandwidth precoding matrix indicators, bandwidth channel quality indicator of the first transport block, and bandwidth channel quality indicator of the second transport block; the third part includes one or more of the following: even subband channel quality indicator of the second transport block, one or more even bandwidth precoding matrix indicators, subband channel quality indicator of the first transport block, subband channel quality indicator of the second transport block, odd subband channel quality indicator of multiple second transport blocks, one or more odd bandwidth precoding matrix indicators, and odd subband channel quality indicator of the first transport block.

[0177] For example, if the NCJT measurement hypothesis is selected and the PMI and CQI granularity is subband, then the CSI report will be divided into 2 parts (part 1, part 2 wideband, part 2 subband).

[0178] (i) Part 1 mapping content includes: first CRI, first NCJT indication, first RI, second RI, first wideband CQI for first TB, first subband CQI for first TB, first non-zero wideband amplitude coefficient, second non-zero wideband amplitude coefficient; Part 2 wideband mapping content includes: first wideband CQI for second TB, first LI, first wideband PMI, second wideband CQI for first TB, second wideband CQI for second TB, second LI, second wideband PMI; Part 2 subband mapping content includes: first even subband CQI for second TB, first even subband PMI, second even subband CQI for first TB, second even subband CQI for second TB, second even subband PMI, first odd subband CQI for second TB, first odd subband PMI, second odd subband CQI for first TB, second odd subband CQI for second TB, second odd subband PMI;

[0179] (ii) Part 1 mapping content includes: First CRI, Second CRI, First RI, Second RI, First wideband CQI for first TB, First subband CQI for first TB, First non-zero wideband amplitude coefficient, Second non-zero wideband amplitude coefficient; Part 2 wideband mapping content includes: First wideband CQI for second TB, First LI, First wideband PMI, Second wideband CQI for first TB, Second wideband CQI for second TB, Second LI, Second wideband PMI; Part 2 subband mapping content includes: First even subband CQI for second TB, First even subband PMI, Second even subband CQI for first TB, Second even subband CQI for second TB, Second even subband PMI, First odd subband CQI for second TB, First odd subband PMI, Second odd subband CQI for first TB, Second odd subband CQI for second TB, Second odd subband PMI;

[0180] (iii) Part 1 mapping content includes: NCJT CRI, first RI, second RI, first wideband CQI for first TB, first subband CQI for first TB, first non-zero wideband amplitude coefficient, second non-zero wideband amplitude coefficient; Part 2 wideband mapping content includes: first wideband CQI for second TB, first LI, first wideband PMI, second wideband CQI for first TB, second wideband CQI for second TB, second LI, second wideband PMI; Part 2 subband mapping content includes: first even subband CQI for second TB, first even subband PMI, second even subband CQI for first TB, second even subband CQI for second TB, second even subband PMI, first odd subband CQI for second TB, first odd subband PMI, second odd subband CQI for first TB, second odd subband CQI for second TB, second odd subband PMI.

[0181] In one embodiment of this application, the CSI report includes one or more of the following:

[0182] (1) At least part of the mapping content of the joint transmission measurement assumption;

[0183] (2) At least part of the mapping content of the STRP measurement hypothesis.

[0184] For example, when a UE selects one STRP measurement hypothesis and one NCJT measurement hypothesis from all STRP and NCJT measurement hypotheses for reporting, the CSI report mapping method may include:

[0185] a) Combine the aforementioned STRP mapping content and NCJT content, for example: combine a STRP CSI and an NCJT CSI into a new CSI report;

[0186] b) Combine the aforementioned STRP mapping content and NCJT content. For example, combine part1 of a STRP and part1 of an NCJT into a new part1, and combine part2 of a STRP and part2 of an NCJT into a new part2.

[0187] c) Combine the aforementioned STRP mapping content and NCJT content. For example, combine part 1 of a STRP (including only CRI, RI, and non-zero wideband amplitude coefficients) and part 1 of an NCJT into a new part 1, and combine part 2 of a STRP (including only the remaining parts) and part 2 of an NCJT into a new part 2.

[0188] d) Combine the aforementioned STRP mapping content and NCJT content. For example, combine part 1 of a STRP (including only RI and non-zero wideband amplitude coefficients) and part 1 of an NCJT into a new part 1, and combine part 2 of a STRP (including only the rest) and part 2 of an NCJT into a new part 2.

[0189] e) Combine the aforementioned STRP mapping content and NCJT content, for example: combine part1 of a STRP and part1 of an NCJT (including only CRI, RI, and non-zero broadband amplitude coefficients) into a new part1, and combine part2 of a STRP and part2 of an NCJT (including only the rest) into a new part2.

[0190] f) Combine the aforementioned STRP mapping content and NCJT content. For example, combine part1 of a STRP and part1 of an NCJT (including only RI and non-zero wideband amplitude coefficients) into a new part1, and combine part2 of a STRP and part2 of an NCJT (including only the rest) into a new part2.

[0191] For example, when a UE selects two STRP measurement hypotheses and one NCJT measurement hypothesis from all STRP and NCJT measurement hypotheses for reporting, the CSI report mapping method may include:

[0192] a) Combine the aforementioned STRP mapping content and NCJT content, for example: combine two STRP CSIs and one NCJT CSI into a new CSI report;

[0193] b) Combine the aforementioned STRP mapping content and NCJT content, for example: combine two STRP part1s and one NCJT part1 into a new part1, and combine two STRP part2s and one NCJT part2 into a new part2.

[0194] c) Combine the aforementioned STRP mapping content and NCJT content. For example, combine part1 of two STRPs (including only CRI, RI, and non-zero wideband amplitude coefficients) and part1 of one NCJT into a new part1, and combine part2 of two STRPs (including only the remaining parts) and part2 of one NCJT into a new part2.

[0195] d) Combine the aforementioned STRP mapping content and NCJT content. For example, combine part1 of two STRPs (including only RI and non-zero wideband amplitude coefficients) and part1 of an NCJT into a new part1, and combine part2 of two STRPs (including only the remaining parts) and part2 of an NCJT into a new part2.

[0196] e) Combine the aforementioned STRP mapping content and NCJT content, for example: combine part1 of two STRPs and part1 of an NCJT (including only CRI, RI, and non-zero wideband amplitude coefficients) into a new part1, and combine part2 of two STRPs and part2 of an NCJT (including only the remaining parts) into a new part2.

[0197] f) Combine the aforementioned STRP mapping content and NCJT content. For example, combine part1 of two STRPs and part1 of an NCJT (including only RI and non-zero wideband amplitude coefficients) into a new part1, and combine part2 of two STRPs and part2 of an NCJT (including only the rest) into a new part2.

[0198] Example 1: If the PMI and CQI granularity is wideband, then the mapping content includes:

[0199] (i) First CRI, Second CRI, First RI, Second RI, Third RI, First LI, Second LI, Third LI, First PMI, Second PMI, Third PMI, First CQI, Second CQI, Third CQI;

[0200] Or, (ii) First CRI, Second CRI, Third CRI, First RI, Second RI, Third RI, First LI, Second LI, Third LI, First PMI, Second PMI, Third PMI, First CQI, Second CQI, Third CQI;

[0201] Example 2: If the PMI and CQI granularity is wideband, then the CSI report is divided into two parts (part1 and part2). The mapping content of Part1 and Part2 is as follows:

[0202] (i) Part 1 mapping content includes: First CRI, First RI, Second RI, Third RI, First LI, First PMI, First CQI; Part 2 mapping content includes: Second LI, Second PMI, Second CQI, Third CRI, Third LI, Third PMI, Third CQI;

[0203] (ii) Part 1 mapping content includes: First CRI, Second CRI, First RI, Second RI, Third RI, First LI, First PMI, First CQI; Part 2 mapping content includes: Second LI, Second PMI, Second CQI, Third CRI, Third LI, Third PMI, Third CQI;

[0204] (iii) Part 1 mapping content includes: First CRI, Third CRI, First RI, Second RI, Third RI, First LI, Third LI, First PMI, Third PMI, First CQI, Third CQI; Part 2 mapping content includes: Second LI, Second PMI, Second CQI;

[0205] (iv) Part 1 mapping content includes: First CRI, Second CRI, Third CRI, First RI, Second RI, Third RI, First LI, Third LI, First PMI, Third PMI, First CQI, Third CQI; Part 2 mapping content includes: Second LI, Second PMI, Second CQI;

[0206] For example, if the PMI and CQI granularity is subband, then the CSI report is divided into 2 parts (part1, part2 wideband, part2 subband), and the mapping content of Part1 and Part2 is as follows:

[0207] (i) Part 1 mapping includes: First CRI, First RI, Second RI, Third RI, First wideband CQI for first TB, First subband CQI for first TB, First non-zero wideband amplitude coefficient, Third non-zero wideband amplitude coefficient, Third non-zero wideband amplitude coefficient; Part 2 wideband mapping includes: First wideband CQI for second TB, First LI, First wideband PMI, Second wideband CQI for first TB, Second wideband CQI for second TB, Second LI, Second wideband PMI, Third wideband CQI for first TB, Third wideband CQI for second TB, Third LI, Third wideband PMI; Part 2 subband mapping includes: First even subband CQI for second TB, First even subband PMI, Second even subband CQI for first TB, Second even subband CQI for second TB, Second even subband PMI, Third even subband CQI for first TB, Third even subband CQI for second ... TB, third even subband PMI, first odd subband CQI for second TB, first odd subband PMI, second odd subband CQI for first TB, second odd subband CQI for second TB, second odd subband PMI, third odd subband CQI for first TB, third odd subband CQI for second TB, third odd subband PMI;

[0208] (ii) Part 1 mapping content includes: First CRI, Second CRI, First RI, Second RI, Third RI, First wideband CQI for first TB, First subband CQI for first TB, First non-zero wideband amplitude coefficient, Third non-zero wideband amplitude coefficient, Third non-zero wideband amplitude coefficient; Part 2 wideband mapping content includes: First wideband CQI for second TB, First LI, First wideband PMI, Second wideband CQI for first TB, Second wideband CQI for second TB, Second LI, Second wideband PMI, Third wideband CQI for first TB, Third wideband CQI for second TB, Third LI, Third wideband PMI; Part 2 subband mapping content includes: First even subband CQI for second TB, First even subband PMI, Second even subband CQI for first TB, Second even subband CQI for second TB, Second even subband PMI, Third even subband CQI for first TB, Third even subband CQI for... secondTB, third even subband PMI, first odd subband CQI for second TB, first odd subband PMI, second odd subband CQI for first TB, second odd subband CQI for second TB, second odd subband PMI, third odd subband CQI for first TB, third odd subband CQI for secondTB, third odd subband PMI;

[0209] (iii) Part 1 mapping content includes: First CRI, Third CRI, First RI, Second RI, Third RI, First wideband CQI for first TB, First subband CQI for first TB, Third wideband CQI for first TB, Third subband CQI for first TB, First non-zero wideband amplitude coefficient, Third non-zero wideband amplitude coefficient, Third non-zero wideband amplitude coefficient; Part 2 wideband mapping content includes: First wideband CQI for second TB, First LI, First wideband PMI, Second wideband CQI for first TB, Second wideband CQI for second TB, Second LI, Second wideband PMI, Third wideband CQI for second TB, Third LI, Third wideband PMI; Part 2 subband mapping content includes: First even subband CQI for second TB, First even subband PMI, Second even subband CQI for first TB, Second even subband CQI for second TB, Second even subband PMI, Third even subband CQI for second TB TB, third even subband PMI, first odd subband CQI for second TB, first odd subband PMI, second odd subband CQI for first TB, second odd subband CQI for second TB, second odd subband PMI, third odd subband CQI for second TB, third odd subband PMI;

[0210] (iv) Part 1 mapping content includes: First CRI, Second CRI, Third CRI, First RI, Second RI, Third RI, First wideband CQI for first TB, First subband CQI for first TB, Third wideband CQI for first TB, Third subband CQI for first TB, First non-zero wideband amplitude coefficient, Third non-zero wideband amplitude coefficient; Part 2 wideband mapping content includes: First wideband CQI for second TB, First LI, First wideband PMI, Second wideband CQI for first TB, Second wideband CQI for second TB, Second LI, Second wideband PMI, Third wideband CQI for second TB, Third LI, Third wideband PMI; Part 2 subband mapping content includes: First even subband CQI for second TB, First even subband PMI, Second even subband CQI for first TB, Second even subband CQI for second TB, Second even subband PMI, Third even subband CQI for second TB TB, third even subband PMI, first odd subband CQI for second TB, first odd subband PMI, second odd subband CQI for first TB, second odd subband CQI for second TB, second odd subband PMI, third odd subband CQI for second TB, third odd subband PMI.

[0211] In one embodiment of this application, the method further includes:

[0212] When the plurality of CSI reports include a multi-TPR (MTRP) CSI report, the terminal determines one or more of the transmission priorities of the CSI reports in the plurality of CSI reports, and the transmission priorities of the CSI content in the multi-TPR CSI reports.

[0213] The CSI content in the CSI report of the multiple TPR includes one or more of the following: CSI content corresponding to the joint transmission measurement assumption, CSI content corresponding to the STRP measurement assumption, broadband information of the joint transmission measurement assumption, broadband information of the TRP measurement assumption, subband information of the joint transmission measurement assumption, and subband information of the TRP measurement assumption.

[0214] For example, 1) When the granularity of PMI and CQI is subband, part1 has higher priority than part2 wideband, and part2 wideband has higher priority than part2 subband;

[0215] 2) When the granularity of PMI and CQI is subband, the priority of part1 is greater than that of part2 wideband, the priority of NCJT measurement hypothesis within part2 is greater than that of STRP measurement hypothesis within part2, and the priority of the wideband domain within part2 is greater than that of the subband domain within part2.

[0216] For example, when a CSI feedback is based on the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH), if there are MTRP CSI reports among the multiple CSI reports, it is necessary to determine the priority among the multiple CSI reports and the priority of the content contained in the MTRP CSI reports.

[0217] In one embodiment of this application, the transmission priority of each CSI report among the plurality of CSI reports includes one or more of the following:

[0218] (1) For multiple non-periodic CSI reports based on PUSCH reports, and all of them are non-bearer layer 1 reference signal received power (L1-RSRP) or layer 1 signal to interference plus noise ratio (L1-SINR), the CSI report of MTRP has higher priority than the CSI report of non-MTRP.

[0219] (2) Multiple semi-persistent CSI reports based on PUSCH reports, all of which are non-bearer L1-RSRP or L1-SINR reports. The CSI reports of MTRP have higher priority than the CSI reports of non-MTRP reports.

[0220] (3) Multiple semi-persistent CSI reports based on PUCCH reports, all of which are non-bearer L1-RSRP or L1-SINR reports, with MTRP CSI reports having higher priority than non-MTRP CSI reports;

[0221] (4) Multiple periodic CSI reports based on PUCCH reports, all of which are non-bearer L1-RSRP or L1-SINR reports. CSI reports for MTRP have higher priority than CSI reports for non-MTRP reports.

[0222] In other words, for multiple non-periodic CSI reports based on PUSCH reports / multiple semi-persistent CSI reports based on PUSCH reports / multiple semi-persistent CSI reports based on PUCCH reports / multiple periodic CSI reports based on PUCCH reports, and all of them are non-bearer L1-RSRP or L1-SINR, the CSI reports of MTRP have higher priority than the CSI reports of non-MTRP, or vice versa.

[0223] For example: MTRP CSI reports have higher priority than non-MTRP CSI reports; the corresponding calculation formula might be: Pri iCSI (y,k,m,c,s)=2·N cells ·M s ·y+N cells ·M s ·k+N cells ·M s ·m / 2+Ms·c+s, where m=0 indicates that the report carries an MTRP CSI report, and m=1 indicates that the report carries a STRP CSI report.

[0224] In one embodiment of this application, one or more of the following are included:

[0225] The transmission priority of the joint transmission measurement hypothesis is higher than the transmission priority of the STRP measurement hypothesis;

[0226] The transmission priority of the joint transmission measurement assumption broadband information and the TRP measurement assumption broadband information is higher than the transmission priority of the joint transmission measurement assumption subband information and the TRP measurement assumption subband information.

[0227] In one embodiment of this application, when the joint transmission measurement assumption reports only one CRI representation and includes multiple RIs, PMIs, and LIs, the mapping order needs to match the order of the CRIs or the CMRs indicated by the CRIs.

[0228] a) For example: CRI0 is defined as a pair of CMRs associated with CMR1 and CMR2 (the joint transmission measurement assumption). The mapping order is to first map the RI, PMI, and LI associated with CMR1, and then map the RI, PMI, and LI associated with CMR2.

[0229] b) For example: CRI0 is defined as CMR1 in CMR1 and CMR2 (a pair of CMRs associated with the joint transmission measurement hypothesis). The mapping order is to first map the RI, PMI, and LI associated with CMR1, and then map the RI, PMI, and LI associated with CMR2.

[0230] In this embodiment of the application, the terminal can report the content of one or more measurement assumptions of various measurement assumption types to the network-side device through the first field of the CSI report, which reduces the feedback overhead of the CSI report and can better support MTRP transmission.

[0231] See Figure 3 This application provides a CSI feedback method, the specific steps of which include: step 301.

[0232] Step 301: The network-side device receives one or more CSI reports, wherein the CSI report includes a first field corresponding to the first measurement hypothesis;

[0233] The first measurement hypothesis includes: X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, where X is a positive integer; or, the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses.

[0234] Understandable, Figure 3 The description of the first domain and the first hypothesis in the illustrated embodiments can be found in [reference]. Figure 2 The embodiments shown will not be described in detail here.

[0235] In one embodiment of this application, when the first field is an RI field and the first measurement hypothesis is one of all STRP measurement hypotheses and joint transport measurement hypotheses, the bit width of the RI field is determined according to one or more of the following:

[0236] (1) Number of antenna ports, for example, 1 antenna port, 2 antenna ports, 4 antenna ports, and more than 4 antenna ports;

[0237] (2) The number of rank indicators allowed for a single TRP transmission and the corresponding bit width length;

[0238] (3) The bit width length corresponding to the number of rank indicators allowed for joint transmission;

[0239] (4) The number of all rank indicators or combinations of rank indicators supported by the terminal.

[0240] In one embodiment of this application, the bit width of the RI field is one of the following:

[0241] (1) A first value, which includes: 0, or or or or or

[0242] Taking N=2 as an example, when each of the two TRPs has only one antenna port, the bit width of the RI field is 0; when one TRP has only one antenna port and the other TRP has two antenna ports, the bit width is... When one TRP has two antenna ports and another TRP has two antenna ports, the bitwidth is... When one TRP has two antenna ports and another TRP has four antenna ports, the bitwidth is... When one TRP has four antenna ports and another TRP has four antenna ports, the bitwidth is... When each TRP has more than four antenna ports, the bitwidth is...

[0243] (2) The second value, which includes: 0 or or or or or Where N RI_jt Indicates the number of all supported rank indicator combinations;

[0244] (3) A third value, wherein the third value includes: 0 or Where N RI Indicates the number of all supported rank indicators or combinations of rank indicators;

[0245] in, This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission; This indicates the bit width length corresponding to the number of rank indicators allowed for NTRP STRP transmissions. This indicates the bit width length corresponding to the number of rank indicators allowed during NTRP joint transmission, where N is greater than or equal to 2.

[0246] In one embodiment of this application, when the bit width of the RI field is a first value, if the first measurement hypothesis is the STRP measurement hypothesis, then one codepoint of the RI field corresponds to one rank indicator; if the first measurement hypothesis is the joint transmission measurement hypothesis, then the first bit width of the RI field corresponds to one rank indicator. The bit corresponds to a rank indicator of the first TRP, the preceding After Bit The bit corresponds to a rank indicator of the NTRP; or the first bit of the RI field. The bit corresponds to a rank indicator of the first TRP, and the latter part of the RI field Each bit corresponds to a rank indicator of the NTRP.

[0247] In one embodiment of this application, when the bit width of the RI field is a second value, if the first measurement hypothesis is the STRP measurement hypothesis, then one code point of the RI field corresponds to one rank indicator; if the first measurement hypothesis is the joint transmission measurement hypothesis, then one code point of the RI field corresponds to a set of rank indicators.

[0248] For example, as shown in Table 1, when the joint transmission measurement hypothesis is reported, if the index value of the RI field is 2, it means that the set of rank indicators for the JT transmission is 2 and 1.

[0249] In one embodiment of this application, when the bit width of the RI field is a third value, one code point of the RI field corresponds to one rank indicator or a set of rank indicators.

[0250] For example, as shown in Table 2, when the index value of the RI field is 2, it indicates a STRP transmission with a rank of 3. When the index value of the RI field is 10, it indicates a JT transmission with a rank of 2 and 1.

[0251] In one embodiment of this application, when the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the Channel State Information Reference Signal Resource Indicator (CSI-RSresource indicator, CRI) field in the CSI report is: Where K s This indicates the number of channel measurement resources that are reported and associated, where N represents the number of CMR pairs that are reported and associated.

[0252] One of the CMR pairs is used to measure a joint transmission measurement hypothesis, where N can represent the number of joint transmission measurement hypotheses that need to be measured.

[0253] In one embodiment of this application, the method further includes:

[0254] If the first measurement hypothesis is one of all STRP measurement hypotheses and joint transport measurement hypotheses, the network-side device uses the first field in the CSI report, or the type of the first measurement hypothesis is either a STRP measurement hypothesis or a joint transport measurement hypothesis.

[0255] The first field is one of the following:

[0256] (1) CRI domain;

[0257] For example: K s When =2 and N=1, the CRI field adopts the aforementioned definition method, CRI0 represents CMR1, CRI1 represents CMR2, and CRI2 represents both CMR1 and CMR2. Therefore, when a user reports CRI2, it indicates the joint transmission measurement assumption.

[0258] (2) RI domain;

[0259] The RI field adopts the definition method described above.

[0260] Alternatively, it can be indicated by other combinations of RI, such as: K s When RI = 2 and N = 1, if the user reports RI1 = 0 and RI2 = 1, where only RI2 is a valid value, then the user reports the STRP measurement hypothesis and the corresponding TRP for RI2; if the user reports RI1 = 1 and RI2 = 1, where both are valid values, then the user reports the joint transmission measurement hypothesis.

[0261] The valid values ​​are determined based on RI restrictions, the number of ports, and the RI combinations supported by joint transmission;

[0262] (3) Newly defined indicator field.

[0263] For example: the newly defined indicator field is the Joint Transmission Indicator field (JT Indicator field), when K s When N=2 and N=1, the CRI field is defined as CRI0 representing CMR1 and CRI1 representing CMR2. Therefore, when the user reports CRI0 and it is a STRP transmission assumption, the joint transmission indication field is 0, and when the user reports CRI0 and it is a joint transmission assumption, the joint transmission indication field is 1.

[0264] In one embodiment of this application, when the first measurement hypothesis includes X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, the number of RI fields in the CSI report is:

[0265] (1) X+1, where X RI fields correspond to X STRP measurement hypotheses, and 1 RI field corresponds to 1 joint transmission measurement hypothesis;

[0266] (2) X+2, where X RI fields correspond to X STRP measurement hypotheses, and 2 RI fields correspond to 1 joint transmission measurement hypothesis;

[0267] (3) 1, of which 1 RI field corresponds to X STRP measurement hypotheses and 1 joint transmission measurement hypothesis.

[0268] (4) 2, of which 1 RI field corresponds to X STRP measurement hypotheses and 1 RI field corresponds to 1 joint transmission measurement hypothesis.

[0269] In one embodiment of this application, when the number of RI fields is X+1 or X+2, the mapping order of the joint transmission measurement hypothesis and the STRP measurement hypothesis in the RI fields includes: the joint transmission measurement hypothesis takes precedence over the STRP measurement hypothesis, or the STRP measurement hypothesis takes precedence over the joint transmission measurement hypothesis.

[0270] In one embodiment of this application, when the number of RI fields is X+1, the first RI field corresponds to one joint transmission measurement hypothesis, and the bit width of the first RI field is determined according to one or more of the following:

[0271] (1) Number of antenna ports, for example, 1 antenna port, 2 antenna ports, 4 antenna ports, and more than 4 antenna ports;

[0272] (2) The bit width length corresponding to the number of rank indicators allowed for joint transmission;

[0273] (3) The number of all rank indicators supported by the terminal;

[0274] (4) The number of all rank indication combinations supported by the terminal.

[0275] In one embodiment of this application, the bit width of the first RI field is one of the following:

[0276] (1) The fourth value, which includes: 0 or or or or or

[0277] in This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during NTRP joint transmission;

[0278] (2) The fifth value, which includes: 0 or or or or or Where N RI_jt This indicates the number of all supported rank indicator combinations.

[0279] In one embodiment of this application, when the bit width of the first RI field is a fourth value:

[0280] (1) The first RI domain before The bit corresponds to a rank indicator of the first TRP, the preceding After bit The bit corresponds to a rank indicator of the NTRP;

[0281] (2) Alternatively, the first RI field's front The bit corresponds to a rank indicator of the first TRP, and the last bit of the first RI field The bit corresponds to a rank indicator of the second TRP;

[0282] (3) Alternatively, if the bit width of the first RI field is the fifth value, one codepoint of the first RI field corresponds to a set of rank indicators.

[0283] Where N is greater than or equal to 2.

[0284] For example, as shown in Table 3, when the NCJT measurement hypothesis is reported, if the index value of the RI field indicator is 2, it means that the set of rank indicators transmitted by NCJT is 2 and 1.

[0285] In one embodiment of this application, when the number of RI fields is X+1 or X+2, and X=1, the second RI field corresponds to one STRP measurement hypothesis, and the bit width of the second RI field is determined according to one or more of the following:

[0286] (1) Number of antenna ports, for example, 1 antenna port, 2 antenna ports, 4 antenna ports, and more than 4 antenna ports;

[0287] (2) The number of rank indicators allowed for STRP transmission corresponds to the bit width length.

[0288] In one embodiment of this application, the bit width of the second RI field is a sixth value;

[0289] The sixth value includes: 0 or or or or or

[0290] in, This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed for the Nth TRP STRP transmission;

[0291] Where N is greater than or equal to 2.

[0292] In one embodiment of this application, when the number of RI fields is one, the bit width of the RI field is determined according to one or more of the following:

[0293] (1) Number of antenna ports, for example, 1 antenna port, 2 antenna ports, 4 antenna ports, and more than 4 antenna ports;

[0294] (2) The number of rank indicators allowed for STRP transmission and the corresponding bit width length;

[0295] (3) The number of all rank indication combinations supported by the terminal;

[0296] (4) The number of rank indicators allowed for joint transmission and the corresponding bit width length.

[0297] In one embodiment of this application, the bit width of the RI field is one of the following:

[0298] (1) The seventh value, which includes: 0 or or or or or

[0299] (2) The eighth value, which includes: 0 or or or or or

[0300] Where N RI_jt Indicates the number of all supported rank indicator combinations;

[0301] This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission; This indicates the bit width length corresponding to the number of rank indicators allowed for NTRP STRP transmissions. This indicates the bit width length corresponding to the number of rank indicators allowed during NTRP joint transmission;

[0302] Where N is greater than or equal to 2.

[0303] In one embodiment of this application, the method further includes:

[0304] Send higher-level signaling, which is used to restrict the first field in the CSI report, wherein the higher-level signaling corresponds one-to-one with the TRP, or the higher-level signaling has a mapping relationship with the CMR or CMR group.

[0305] For example, higher-level signaling can be typeI-SinglePanel-ri-Restriction, ri-Restriction, typeII-RI-Restriction, typeII-PortSelectionRI-Restriction, typeII-RI-Restriction-r16, and typeII-PortSelectionRI-Restriction-r16.

[0306] In one embodiment of this application, the way the STRP measurement hypothesis is mapped to the CSI report includes:

[0307] The Precoding Matrix Indicator (PMI) and Channel Quality Indicator (CQI) in the CSI report are granular at the wideband level. The mapping content of the STRP measurement assumption in the CSI report includes one or more of the following: CRI, newly defined indicator, RI, layer indicator (LI), PMI and CQI.

[0308] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0309] The PMI and CQI granularity in the CSI report is bandwidth. The mapping content of the joint transmission measurement assumption in the CSI report includes one or more of the following: one or more CRIs, newly defined indication fields, one or more RIs, one or more LIs, one or more PMIs, and one or more CQIs.

[0310] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0311] The PMI and CQI granularity in the CSI report is bandwidth, and the mapping content of the joint transmission measurement assumption in the CSI report includes: Part 1 and Part 2.

[0312] The first part includes one or more of the following: a CRI, a newly defined instruction, multiple RIs, a LI, a PMI, and a CQI; the second part includes one or more of the following: a LI, a PMI, and a CQI.

[0313] or,

[0314] The first part includes one or more of the following: multiple CRIs, multiple RIs, one LI, one PMI, and one CQI; the second part includes one or more of the following: one LI, one PMI, and one CQI.

[0315] or,

[0316] The first part includes one or more of the following: a CRI, multiple RIs, a LI, a PMI, and a CQI; the second part includes one or more of the following: a LI, a PMI, and a CQI.

[0317] Alternatively, the way the STRP measurement assumption is mapped to the CSI report includes:

[0318] The PMI and CQI granularity in the CSI report are sub-bands, and the mapping content of the STRP measurement hypothesis in the CSI report includes a first part, a second part, and a third part.

[0319] The first part includes one or more of the following: a CRI, a newly defined indicator, an RI, a wideband CQI for first TB, a subband CQI for first TB, and a non-zero wideband amplitude coefficient; the second part includes one or more of the following: a wideband CQI for second TB, an LI, and a wideband PMI; the third part includes one or more of the following: an even subband CQI for second TB, an even subband PMI, an odd subband CQI for second TB, and an odd subband PMI.

[0320] or,

[0321] The first part includes one or more of the following: a CRI, an RI, a wideband CQI for the first transport block (TB), a subband CQI for the first transport block (TB), and a non-zero wideband amplitude coefficient; the second part includes one or more of the following: a wideband CQI for the second transport block (TB), an LI, and a wideband PMI; the third part includes one or more of the following: an even subband CQI for the second transport block (TB), an even subband PMI for the second transport block (TB), an odd subband CQI for the second transport block (TB), and an odd subband PMI for the second transport block (TB).

[0322] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0323] The PMI and CQI granularity in the CSI report are sub-bands, and the mapping content of the NCJT measurement false in the CSI report includes a first part, a second part, and a third part.

[0324] The first part includes one or more of the following: a CRI, a newly defined indicator, one or more RIs, a wideband CQI for the first TB, a subband CQI for the first TB, and one or more non-zero wideband amplitude coefficients; the second part includes one or more of the following: a wideband CQI for the second TB, one or more LIs, one or more wideband precoding matrix indicators (PMIs), and a wideband CQI for multiple TBs; the third part includes one or more of the following: an even-numbered subband CQI for the second TB, a multiple even-numbered subband precoding matrix indicators, a multiple even-numbered subband CQI for the second TB, a multiple odd-numbered subband CQI for the second TB, a multiple odd-numbered subband CQI for the second TB, an odd-numbered subband CQI for the first TB, and an odd-numbered subband CQI for the second TB;

[0325] or,

[0326] The first part includes one or more of the following: one or more CRIs, one or more RI fields, bandwidth channel quality indicator of the first transport block, subband channel quality indicator of the first transport block, and one or more non-zero wideband amplitude coefficients; the second part includes one or more of the following: bandwidth channel quality indicator of the second transport block, one or more LIs, multiple bandwidth precoding matrix indicators, bandwidth channel quality indicator of the first transport block, and bandwidth channel quality indicator of the second transport block; the third part includes one or more of the following: even subband channel quality indicator of the second transport block, multiple even subband coding matrix indicators, even subband channel quality indicator of the first transport block, even subband channel quality indicator of the second transport block, one even subband coding matrix indicator, odd subband channel quality indicator of the second transport block, multiple odd subband coding matrix indicators, and multiple odd subband channel quality indicators of the transport blocks.

[0327] or,

[0328] The first part includes one or more of the following: CRI, one or more RI, bandwidth channel quality indicator of the first transport block, subband channel quality indicator of the first transport block, and one or more non-zero wideband amplitude coefficients; the second part includes one or more of the following: bandwidth channel quality indicators of multiple second transport blocks, one or more LI, one or more bandwidth precoding matrix indicators, bandwidth channel quality indicator of the first transport block, and bandwidth channel quality indicator of the second transport block; the third part includes one or more of the following: even subband channel quality indicator of the second transport block, one or more even bandwidth precoding matrix indicators, subband channel quality indicator of the first transport block, subband channel quality indicator of the second transport block, odd subband channel quality indicator of multiple second transport blocks, one or more odd bandwidth precoding matrix indicators, and odd subband channel quality indicator of the first transport block.

[0329] In one embodiment of this application, the CSI report includes one or more of the following:

[0330] (1) At least part of the mapping content of the joint transmission measurement assumption;

[0331] (2) At least part of the mapping content of the STRP measurement hypothesis.

[0332] In one embodiment of this application, the transmission priority of each CSI report among the plurality of CSI reports includes one or more of the following:

[0333] (1) For multiple non-periodic CSI reports based on PUSCH reports, and all of them are non-bearer layer 1 reference signal received power (L1-RSRP) or layer 1 signal to interference plus noise ratio (L1-SINR), the CSI report of MTRP has higher priority than the CSI report of non-MTRP.

[0334] (2) Multiple semi-persistent CSI reports based on PUSCH reports, all of which are non-bearer L1-RSRP or L1-SINR reports. The CSI reports of MTRP have higher priority than the CSI reports of non-MTRP reports.

[0335] (3) Multiple semi-persistent CSI reports based on PUCCH reports, all of which are non-bearer L1-RSRP or L1-SINR reports, with MTRP CSI reports having higher priority than non-MTRP CSI reports;

[0336] (4) Multiple periodic CSI reports based on PUCCH reports, all of which are non-bearer L1-RSRP or L1-SINR reports. CSI reports for MTRP have higher priority than CSI reports for non-MTRP reports.

[0337] In other words, for multiple non-periodic CSI reports based on PUSCH reports / multiple semi-persistent CSI reports based on PUSCH reports / multiple semi-persistent CSI reports based on PUCCH reports / multiple periodic CSI reports based on PUCCH reports, and all of them are non-bearer L1-RSRP or L1-SINR, the CSI reports of MTRP have higher priority than the CSI reports of non-MTRP, or vice versa.

[0338] For example: MTRP CSI reports have higher priority than non-MTRP CSI reports; the corresponding calculation formula might be: Pri iCSI (y,k,m,c,s)=2·N cells ·M s ·y+N cells ·M s ·k+N cells ·M s ·m / 2+Ms·c+s, where m=0 indicates that the report carries a CSI report of MTRP, and m=1 indicates that the report carries a CSI report of STRP.

[0339] In one embodiment of this application, one or more of the following are included:

[0340] The transmission priority of the joint transmission measurement hypothesis is higher than the transmission priority of the STRP measurement hypothesis;

[0341] The transmission priority of the joint transmission measurement assumption broadband information and the TRP measurement assumption broadband information is higher than the transmission priority of the joint transmission measurement assumption subband information and the TRP measurement assumption subband information.

[0342] In one embodiment of this application, when the joint transmission measurement assumption reports only one CRI representation and includes multiple RIs, PMIs, and LIs, the mapping order needs to match the order of the CRIs or the CMRs indicated by the CRIs.

[0343] a) For example: CRI0 is defined as a pair of CMRs associated with CMR1 and CMR2 (the joint transmission measurement assumption). The mapping order is to first map the RI, PMI, and LI associated with CMR1, and then map the RI, PMI, and LI associated with CMR2.

[0344] b) For example: CRI0 is defined as CMR1 in CMR1 and CMR2 (a pair of CMRs associated with the joint transmission measurement hypothesis). The mapping order is to first map the RI, PMI, and LI associated with CMR1, and then map the RI, PMI, and LI associated with CMR2.

[0345] In this embodiment of the application, the terminal can report the content of one or more measurement assumptions of various measurement assumption types to the network-side device through the first field of the CSI report, which reduces the feedback overhead of the CSI report and can better support MTRP transmission.

[0346] The embodiments of this application are described below with reference to Embodiments 1 to 6.

[0347] Example 1:

[0348] When the higher-layer signaling is configured so that the UE selects the optimal measurement hypothesis to report, and CMR0 and CMR1 are configured in the CSI reporting setting, if the UE selects a STRP measurement hypothesis corresponding to CMR0 to report, the UE can inform the base station that the CSI report corresponds to a STRP measurement hypothesis by setting the CRI field of the CSI report to CRI0; if the UE selects an NCJT measurement hypothesis corresponding to both CMR0 and CMR1 to report, the UE can inform the base station that the CSI report corresponds to an NCJT measurement hypothesis by setting the CRI field of the CSI report to CRI2.

[0349] The definition of CRI is shown in Table 4.

[0350] Table 4

[0351] CRI0 CRI1 CRI2 CMR0 CMR1 CMR0 and CMR1

[0352] Example 2:

[0353] When the higher-layer signaling is configured so that the UE selects the optimal measurement hypothesis to report, and CMR0 and CMR1 are configured in the CSI reporting setting, if the UE selects a STRP measurement hypothesis corresponding to CMR0 to report, the UE can inform the base station that the CSI report corresponds to a STRP measurement hypothesis by setting CRI0 in the CRI field of the CSI report and setting 0 (adding 1 bit) in the NCJT indication field of the CSI report; if the UE selects an NCJT measurement hypothesis corresponding to both CMR0 and CMR2 to report, the UE can inform the base station that the CSI report corresponds to an NCJT measurement hypothesis by setting CRI0 or CRI1 in the CRI field of the CSI report and setting 1 in the NCJT indication field of the CSI report.

[0354] Example 3:

[0355] When the higher-layer signaling is configured to allow the UE to report two STRP measurement hypotheses and one NCJT measurement hypothesis, and CMR0 and CMR1 are configured in the CSI reporting setting, then there are three RI-related fields in the CSI report. The first RI field corresponds to CMR0 and is associated with a STRP measurement hypothesis, the second RI field corresponds to CMR1 and is associated with a STRP measurement hypothesis, and the third RI field corresponds to CMR0 and CMR1 and is associated with an NCJT measurement hypothesis. The third RI field indicates that an index value corresponds to a set of rank values, as shown in Table 5.

[0356] Table 5

[0357] Index A set of rank indicators 0 (1,1) 1 (1,2) 2 (2,1) 3 (2,2) … …

[0358] If the index value of the indicator is 1, then the rank indicator value corresponding to CMR0 is 1, and the rank indicator value corresponding to CMR1 is 2.

[0359] Example 4:

[0360] When the higher-layer signaling is configured to allow the UE to report the optimal measurement hypothesis and CMR0 and CMR1 are configured in the CSI reporting setting, there is one RI-related field in the CSI report. When the UE indicates the TRP report content to be a STRP CSI corresponding to CMR0 through other means, the RI field indicates the value of the rank indicator of a STRP measurement hypothesis associated with the corresponding CMR0. When the UE indicates the TRP report content to be an NCJT CSI corresponding to CMR0 and CMR1 through other means, the RI field indicates a set of rank values, as shown in Table 6.

[0361] Table 6

[0362] Index A set of rank indicators 0 (1,1) 1 (1,2) 2 (2,1) 3 (2,2) … …

[0363] If the index value of the indicator is 1, then the rank indicator value corresponding to CMR0 is 1, and the rank indicator value corresponding to CMR1 is 2.

[0364] Example 5:

[0365] When the higher-layer signaling is configured to allow the UE to report the optimal measurement hypothesis and CMR0 and CMR1 are configured in the CSI reporting setting, the RI-related field in the CSI report will have one field. The STRP transmission rank supported by TRP0 corresponding to CMR0 will be rank 1 / 2 / 3 (2 bits), and the STRP transmission rank supported by TRP1 corresponding to CMR1 will be rank 2 / 3 (1 bit). The set of rank indicators for NCJT transmission supported by TRP0 and TRP1 corresponding to CMR0 and CMR1 will be <1,2> ​​and <2,2> (1 bit), respectively. Therefore, the bitwidth of the RI field in the CSI report will be 2 bits. When the UE selects to report the NCJT transmission hypothesis, the set of rank indicators corresponding to "00" will be <1,2>, and the set of rank indicators corresponding to "01" will be <2,2>.

[0366] Example 6:

[0367] When the higher-layer signaling is configured to allow the UE to report the optimal STRP measurement hypothesis and the optimal NCJT measurement hypothesis, and CMR0 and CMR1 are configured in the CSI reporting setting, then there are two RI-related fields in the CSI report. The first RI field corresponds to one STRP measurement hypothesis, and the second RI field corresponds to one NCJT measurement hypothesis. The STRP transmission rank indicator that CMR0 can support for TRP0 is rank 1 / 2 / 3 (2 bits), the STRP transmission rank that CMR1 can support for TRP1 is rank 2 / 3 (1 bit), and the rank indicators that TRP0 and TRP1 support for NCJT transmission for CMR0 and CMR1 are <1,2> ​​and <2,2> (1 bit). Therefore, the bit width of the first RI field corresponding to the CSI report is 2 bits, and the bit width of the second RI field corresponding to the CSI report is 1 bit.

[0368] See Figure 4 This application provides a CSI feedback device applied to a terminal. The device 400 includes:

[0369] The first sending module 401 is used to send one or more CSI reports to the network-side device, wherein the first field in the CSI report represents a first measurement hypothesis.

[0370] The first measurement hypothesis includes: X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, where X is a natural number; or, the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses.

[0371] In one embodiment of this application, when the first field is an RI field and the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the RI field is determined according to one or more of the following:

[0372] Number of antenna ports;

[0373] The number of rank indicators allowed for a single TRP transmission, corresponding to the bit width length;

[0374] The number of rank indicators allowed for combined transmission, corresponding to the bit width length;

[0375] The number of all rank indicators supported by the terminal;

[0376] The number of rank indicator combinations of all supported rank indicators of the terminal.

[0377] In one embodiment of this application, the bit width of the RI field is one of the following:

[0378] The first value includes: 0, or or or or or

[0379] The second value, which includes: 0 or or or or or Where N RI_jt Indicates the number of all supported rank indicator combinations;

[0380] The third value includes: 0 or Where N RI Indicates the number of all supported rank indicators or combinations of rank indicators;

[0381] in, This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission; This indicates the bit width length corresponding to the number of rank indicators allowed for the Nth TRP STRP transmission. This represents the bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission, where N is greater than or equal to 2.

[0382] In one embodiment of this application, when the bit width of the RI field is a first value, if the first measurement hypothesis is the STRP measurement hypothesis, then one code point in the RI field corresponds to one rank indicator; if the first measurement hypothesis is the joint transmission measurement hypothesis, then the first bit width of the RI field corresponds to one rank indicator. The bit corresponds to a rank indicator of the first TRP, the preceding After Bit The bit corresponds to a rank indicator of the Nth TRP; or the first bit of the RI field. The bit corresponds to a rank indicator of the first TRP, and the latter part of the RI field The bit corresponds to a rank indicator of the NTRP;

[0383] or,

[0384] When the bit width of the RI field is the second value, if the first measurement hypothesis is the STRP measurement hypothesis, then one code point in the RI field corresponds to one rank indicator; if the first measurement hypothesis is the joint transmission measurement hypothesis, then one code point in the RI field corresponds to a set of rank indicators.

[0385] or,

[0386] When the bit width of the RI field is a third value, one code point in the RI field corresponds to one rank indicator or a set of rank indicators.

[0387] In one embodiment of this application, when the first measurement hypothesis is one of all STRP measurement hypotheses and joint transport measurement hypotheses, the bit width of the CRI field in the CSI report is: Where K s This indicates the number of channel measurement resources that are reported and associated, where N represents the number of CMR pairs that are reported and associated.

[0388] In one embodiment of this application, the device 400 further includes:

[0389] The second sending module is configured to, when the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, indicate to the network-side device, via the first field in the CSI report, whether the type of the first measurement hypothesis is a STRP measurement hypothesis or a joint transmission measurement hypothesis.

[0390] The first field is either a CRI field, an RI field, or a newly defined indicator field.

[0391] In one embodiment of this application, when the first measurement hypothesis includes X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, the number of RI fields in the CSI report is:

[0392] X+1, where X RI fields correspond to X STRP measurement hypotheses, and 1 RI field corresponds to 1 joint transmission measurement hypothesis;

[0393] X+2, where X RI fields correspond to X STRP measurement hypotheses, and 2 RI fields correspond to 1 joint transmission measurement hypothesis;

[0394] One, of which one RI field corresponds to X STRP measurement hypotheses and one joint transmission measurement hypothesis;

[0395] There are 2, where 1 RI field corresponds to X STRP measurement hypotheses and 1 RI field corresponds to 1 joint transmission measurement hypothesis.

[0396] In one embodiment of this application, when the number of RI fields is X+1 or X+2, the mapping order of the joint transmission measurement hypothesis and the STRP measurement hypothesis in the RI fields includes: the joint transmission measurement hypothesis takes precedence over the STRP measurement hypothesis, or the STRP measurement hypothesis takes precedence over the joint transmission measurement hypothesis.

[0397] In one embodiment of this application, when the number of RI fields is X+1, the first RI field corresponds to one joint transmission measurement hypothesis, and the bit width of the first RI field is determined according to one or more of the following:

[0398] Number of antenna ports;

[0399] The number of rank indicators allowed for combined transmission, corresponding to the bit width length;

[0400] The number of all rank indicators supported by the terminal;

[0401] The number of all supported rank indication combinations of the terminal.

[0402] In one embodiment of this application, the bit width of the first RI field is one of the following:

[0403] The fourth value includes: 0 or or or or or

[0404] in This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission;

[0405] The fifth value includes: 0 or or or or or Where N RI_jt This indicates the number of all supported rank indicator combinations.

[0406] In one embodiment of this application, when the bit width of the first RI field is a fourth value, the first RI field... The bit corresponds to a rank indicator of the first TRP, the preceding After bit The bit corresponds to a rank indicator of the NTRP;

[0407] or,

[0408] The first RI field The bit corresponds to a rank indicator of the first TRP, and the last bit of the first RI field The bit corresponds to a rank indicator of the second TRP;

[0409] or,

[0410] When the bit width of the first RI field is the fifth value, one code point of the first RI field corresponds to a set of rank indicators.

[0411] Where N is greater than or equal to 2.

[0412] In one embodiment of this application, when the number of RI fields is X+1 or X+2, and X=1, the second RI field corresponds to one STRP measurement hypothesis, and the bit width of the second RI field is determined according to one or more of the following:

[0413] Number of antenna ports;

[0414] The number of rank indicators allowed by STRP transmission corresponds to the bit width length.

[0415] In one embodiment of this application, the bit width of the second RI field is a sixth value;

[0416] The sixth value includes: 0 or or or or or

[0417] in, This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed for the Nth TRP STRP transmission;

[0418] Where N is greater than or equal to 2.

[0419] In one embodiment of this application, when the number of RI fields is one, the bit width of the RI field is determined according to one or more of the following:

[0420] Number of antenna ports;

[0421] The number of rank indicators allowed by STRP transmissions, corresponding to the bit width length;

[0422] The number of all supported rank indicator combinations of the terminal;

[0423] The number of rank indicators allowed for combined transmission corresponds to the bit width length.

[0424] In one embodiment of this application, the bit width of the RI field is one of the following:

[0425] The seventh value includes: 0 or or or or or

[0426] The eighth value, which includes: 0 or or or or or

[0427] Where N RI_jt Indicates the number of all supported rank indicator combinations;

[0428] This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission; This indicates the bit width length corresponding to the number of rank indicators allowed for the Nth TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission;

[0429] Where N is greater than or equal to 2.

[0430] In one embodiment of this application, the device 400 further includes:

[0431] The first receiving module is configured to receive higher-layer signaling, which is used to restrict the first field in the CSI report. The higher-layer signaling corresponds one-to-one with the TRP, or the higher-layer signaling has a mapping relationship with the CMR or CMR group.

[0432] In one embodiment of this application, the way the STRP measurement hypothesis is mapped to the CSI report includes:

[0433] The PMI and CQI granularity in the CSI report is bandwidth, and the mapping content of the STRP measurement assumption in the CSI report includes one or more of the following: CRI, newly defined indication, RI, LI, PMI and CQI;

[0434] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0435] The PMI and CQI granularity in the CSI report is bandwidth. The mapping content of the joint transmission measurement assumption in the CSI report includes one or more of the following: one or more CRIs, newly defined indication fields, one or more RIs, one or more LIs, one or more PMIs, and one or more CQIs.

[0436] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0437] The PMI and CQI granularity in the CSI report is bandwidth, and the mapping content of the joint transmission measurement assumption in the CSI report includes: Part 1 and Part 2;

[0438] The first part includes one or more of the following: a CRI, a newly defined instruction, multiple RIs, a LI, a PMI, and a CQI; the second part includes one or more of the following: a LI, a PMI, and a CQI.

[0439] or,

[0440] The first part includes one or more of the following: multiple CRIs, multiple RIs, one LI, one PMI, and one CQI; the second part includes one or more of the following: one LI, one PMI, and one CQI.

[0441] or,

[0442] The first part includes one or more of the following: a CRI, multiple RIs, a LI, a PMI, and a CQI; the second part includes one or more of the following: a LI, a PMI, and a CQI.

[0443] Alternatively, the way the STRP measurement assumption is mapped to the CSI report includes:

[0444] The PMI and CQI granularity in the CSI report are sub-bands, and the mapping content of the STRP measurement hypothesis in the CSI report includes a first part, a second part, and a third part.

[0445] The first part includes one or more of the following: a CRI, a newly defined indicator, an RI, a wideband channel quality indicator for the first transport block, a subband channel quality indicator for the first transport block, and a non-zero wideband amplitude coefficient; the second part includes one or more of the following: a wideband channel quality indicator for the second transport block, an LI, and a bandwidth precoding matrix indicator; the third part includes one or more of the following: an even subband channel quality indicator for the second transport block, an even subband precoding matrix indicator, an odd subband channel quality indicator for the second transport block, and an odd subband precoding matrix indicator.

[0446] or,

[0447] The first part includes one or more of the following: a CRI, an RI, a bandwidth channel quality indicator for the first transport block, a subband channel quality indicator for the first transport block, and a non-zero bandwidth amplitude coefficient; the second part includes one or more of the following: a bandwidth channel quality indicator for the second transport block, an LI, and a subband precoding matrix indicator; the third part includes one or more of the following: an even-numbered subband channel quality indicator for the second transport block, an even-numbered subband precoding matrix indicator, an odd-numbered subband channel quality indicator for the second transport block, and an odd-numbered subband precoding matrix indicator.

[0448] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0449] The PMI and CQI granularity in the CSI report are sub-bands, and the mapping content of the NCJT measurement false in the CSI report includes a first part, a second part, and a third part.

[0450] The first part includes one or more of the following: a CRI, a newly defined indicator, one or more RIs, a bandwidth channel quality indicator for the first transport block, a subband channel quality indicator for the first transport block, and one or more non-zero bandwidth amplitude coefficients; the second part includes one or more of the following: a bandwidth channel quality indicator for the second transport block, one or more LIs, one or more bandwidth precoding matrix indicators, and bandwidth channel quality indicators for multiple transport blocks; the third part includes one or more of the following: an even subband channel quality indicator for the second transport block, multiple even subband precoding matrix indicators, multiple even subband channel quality indicators for the second transport block, multiple odd subband channel quality indicators for the second transport block, multiple odd subband precoding matrix indicators, an odd subband channel quality indicator for the first transport block, and an odd subband channel quality indicator for the second transport block.

[0451] or,

[0452] The first part includes one or more of the following: one or more CRIs, one or more RI fields, bandwidth channel quality indicator of the first transport block, subband channel quality indicator of the first transport block, and one or more non-zero wideband amplitude coefficients; the second part includes one or more of the following: bandwidth channel quality indicator of the second transport block, one or more LIs, multiple bandwidth precoding matrix indicators, bandwidth channel quality indicator of the first transport block, and bandwidth channel quality indicator of the second transport block; the third part includes one or more of the following: even subband channel quality indicator of the second transport block, multiple even subband coding matrix indicators, even subband channel quality indicator of the first transport block, even subband channel quality indicator of the second transport block, one even subband coding matrix indicator, odd subband channel quality indicator of the second transport block, multiple odd subband coding matrix indicators, and multiple odd subband channel quality indicators of the transport blocks.

[0453] or,

[0454] The first part includes one or more of the following: CRI, one or more RI, bandwidth channel quality indicator of the first transport block, subband channel quality indicator of the first transport block, and one or more non-zero wideband amplitude coefficients; the second part includes one or more of the following: bandwidth channel quality indicators of multiple second transport blocks, one or more LI, one or more bandwidth precoding matrix indicators, bandwidth channel quality indicator of the first transport block, and bandwidth channel quality indicator of the second transport block; the third part includes one or more of the following: even subband channel quality indicator of the second transport block, one or more even bandwidth precoding matrix indicators, subband channel quality indicator of the first transport block, subband channel quality indicator of the second transport block, odd subband channel quality indicator of multiple second transport blocks, one or more odd bandwidth precoding matrix indicators, and odd subband channel quality indicator of the first transport block.

[0455] In one embodiment of this application, the CSI report includes one or more of the following:

[0456] At least part of the mapping content of the joint transmission measurement assumption;

[0457] At least part of the mapping content of the STRP measurement hypothesis.

[0458] In one embodiment of this application, the apparatus further includes:

[0459] The determining module is used to determine, when the plurality of CSI reports include: a CSI report with multiple TPRs, one or more of the transmission priorities of the CSI reports in the plurality of CSI reports, and the transmission priorities of the CSI content in the CSI reports with multiple TPRs;

[0460] The CSI content in the CSI report of the multiple TPR includes one or more of the following: CSI content corresponding to the joint transmission measurement assumption, CSI content corresponding to the STRP measurement assumption, broadband information of the joint transmission measurement assumption, broadband information of the TRP measurement assumption, subband information of the joint transmission measurement assumption, and subband information of the TRP measurement assumption.

[0461] In one embodiment of this application, the transmission priority of each CSI report among the plurality of CSI reports includes one or more of the following:

[0462] For multiple non-periodic CSI reports based on PUSCH reports, and all of them are non-bearer L1-RSRP or L1-SINR, the CSI report of MTRP has higher priority than the CSI report of non-MTRP.

[0463] Multiple semi-persistent CSI reports based on PUSCH reports, all of which are non-bearer L1-RSRP or L1-SINR reports, have higher priority for MTRP CSI reports than for non-MTRP CSI reports;

[0464] Multiple semi-persistent CSI reports based on PUCCH reports, all of which are non-bearer L1-RSRP or L1-SINR reports, have higher priority for MTRP CSI reports than for non-MTRP CSI reports;

[0465] Based on multiple periodic CSI reports from the PUCCH report, all of which are non-bearer L1-RSRP or L1-SINR reports, the CSI report for MTRP has higher priority than the CSI report for non-MTRP.

[0466] In one embodiment of this application, the transmission priority of CSI content in the CSI report of the multi-TPR includes one or more of the following:

[0467] The transmission priority of the joint transmission measurement hypothesis is higher than the transmission priority of the STRP measurement hypothesis;

[0468] The transmission priority of the joint transmission measurement assumption broadband information and the TRP measurement assumption broadband information is higher than the transmission priority of the joint transmission measurement assumption subband information and the TRP measurement assumption subband information.

[0469] The apparatus provided in this application embodiment can achieve... Figure 2 The various processes implemented in the method embodiments shown achieve the same technical effects, and will not be described again here to avoid repetition.

[0470] See Figure 5 This application provides a CSI feedback device, applied to a network-side device. The device 500 includes:

[0471] The second receiving module 501 is configured to receive one or more CSI reports, wherein the CSI reports include a first field corresponding to the first measurement hypothesis;

[0472] The first measurement hypothesis includes: X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, where X is a positive integer; or, the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses.

[0473] In one embodiment of this application, when the first field is an RI field and the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the RI field is determined according to one or more of the following:

[0474] Number of antenna ports;

[0475] The number of rank indicators allowed for a single TRP transmission, corresponding to the bit width length;

[0476] The number of rank indicators allowed for combined transmission, corresponding to the bit width length;

[0477] The number of all rank indicators supported by the terminal;

[0478] The number of all supported rank indication combinations of the terminal.

[0479] In one embodiment of this application, the bit width of the RI field is one of the following:

[0480] The first value includes: 0, or or or or or

[0481] The second value, which includes: 0 or or or or or Where N RI_jt Indicates the number of all supported rank indicator combinations;

[0482] The third value includes: 0 or Where N RI Indicates the number of all supported rank indicators or combinations of rank indicators;

[0483] in, This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission; This indicates the bit width length corresponding to the number of rank indicators allowed for the Nth TRP STRP transmission. This represents the bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission, where N is greater than or equal to 2.

[0484] In one embodiment of this application, when the bit width of the RI field is a first value, if the first measurement hypothesis is the STRP measurement hypothesis, then one code point in the RI field corresponds to one rank indicator; if the first measurement hypothesis is the joint transmission measurement hypothesis, then the first bit width of the RI field corresponds to one rank indicator. The bit corresponds to a rank indicator of the first TRP, the preceding After Bit The bit corresponds to a rank indicator of the Nth TRP; or the first bit of the RI field. The bit corresponds to a rank indicator of the first TRP, and the latter part of the RI field The bit corresponds to a rank indicator of the NTRP;

[0485] or,

[0486] When the bit width of the RI field is the second value, if the first measurement hypothesis is the STRP measurement hypothesis, then one code point in the RI field corresponds to one rank indicator; if the first measurement hypothesis is the joint transmission measurement hypothesis, then one code point in the RI field corresponds to a set of rank indicators.

[0487] or,

[0488] When the bit width of the RI field is a third value, one code point in the RI field corresponds to one rank indicator or a set of rank indicators.

[0489] In one embodiment of this application, when the first measurement hypothesis is one of all STRP measurement hypotheses and joint transport measurement hypotheses, the bit width of the CRI field in the CSI report is: Where K s This indicates the number of channel measurement resources that are reported and associated, where N represents the number of CMR pairs that are reported and associated.

[0490] In one embodiment of this application, the device 500 further includes:

[0491] The third receiving module is configured to, when the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, obtain, through the first field of the CSI report, whether the type of the first measurement hypothesis is a STRP measurement hypothesis or a joint transmission measurement hypothesis.

[0492] The first field is either a CRI field, an RI field, or a newly defined indicator field.

[0493] In one embodiment of this application, when the first measurement hypothesis includes X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, the number of RI fields in the CSI report is:

[0494] X+1, where X RI fields correspond to X STRP measurement hypotheses, and 1 RI field corresponds to 1 joint transmission measurement hypothesis;

[0495] X+2, where X RI fields correspond to X STRP measurement hypotheses, and 2 RI fields correspond to 1 joint transmission measurement hypothesis;

[0496] One, of which one RI field corresponds to X STRP measurement hypotheses and one joint transmission measurement hypothesis;

[0497] There are 2, where 1 RI field corresponds to X STRP measurement hypotheses and 1 RI field corresponds to 1 joint transmission measurement hypothesis.

[0498] In one embodiment of this application, when the number of RI fields is X+1 or X+2, the mapping order of the joint transmission measurement hypothesis and the STRP measurement hypothesis in the RI fields includes: the joint transmission measurement hypothesis takes precedence over the STRP measurement hypothesis, or the STRP measurement hypothesis takes precedence over the joint transmission measurement hypothesis.

[0499] In one embodiment of this application, when the number of RI fields is X+1, the first RI field corresponds to one joint transmission measurement hypothesis, and the bit width of the first RI field is determined according to one or more of the following:

[0500] Number of antenna ports;

[0501] The number of rank indicators allowed for combined transmission, corresponding to the bit width length;

[0502] The number of all rank indicators supported by the terminal;

[0503] The number of all supported rank indication combinations of the terminal.

[0504] In one embodiment of this application, the bit width of the first RI field is one of the following:

[0505] The fourth value includes: 0 or or or or or

[0506] in This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission;

[0507] The fifth value includes: 0 or or or or or Where N RI_jt This indicates the number of all supported rank indicator combinations.

[0508] In one embodiment of this application, when the bit width of the first RI field is a fourth value, the first RI field... The bit corresponds to a rank indicator of the first TRP, the preceding After bit The bit corresponds to a rank indicator of the NTRP;

[0509] or,

[0510] The first RI field The bit corresponds to a rank indicator of the first TRP, and the last bit of the first RI field The bit corresponds to a rank indicator of the second TRP;

[0511] or,

[0512] When the bit width of the first RI field is the fifth value, one code point of the first RI field corresponds to a set of rank indicators.

[0513] Where N is greater than or equal to 2.

[0514] In one embodiment of this application, when the number of RI fields is X+1 or X+2, and X=1, the second RI field corresponds to one STRP measurement hypothesis, and the bit width of the second RI field is determined according to one or more of the following:

[0515] Number of antenna ports;

[0516] The number of rank indicators allowed by STRP transmission corresponds to the bit width length.

[0517] In one embodiment of this application, the bit width of the second RI field is a sixth value;

[0518] The sixth value includes: 0 or or or or or

[0519] in, This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed for the Nth TRP STRP transmission;

[0520] Where N is greater than or equal to 2.

[0521] In one embodiment of this application, when the number of RI fields is one, the bit width of the RI field is determined according to one or more of the following:

[0522] Number of antenna ports;

[0523] The number of rank indicators allowed by STRP transmissions, corresponding to the bit width length;

[0524] The number of all supported rank indicator combinations of the terminal;

[0525] The number of rank indicators allowed for combined transmission corresponds to the bit width length.

[0526] In one embodiment of this application, the bit width of the RI field is one of the following:

[0527] The seventh value includes: 0 or or or or or

[0528] The eighth value, which includes: 0 or or or or or

[0529] Where N RI_jt Indicates the number of all supported rank indicator combinations;

[0530] This indicates the bit width length corresponding to the number of rank indicators allowed for the first TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the first TRP joint transmission; This indicates the bit width length corresponding to the number of rank indicators allowed for the Nth TRP STRP transmission. This indicates the bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission;

[0531] Where N is greater than or equal to 2.

[0532] In one embodiment of this application, the device 500 further includes:

[0533] The second sending module is used to send higher-layer signaling, which is used to restrict the first field in the CSI report. The higher-layer signaling corresponds one-to-one with the TRP, or the higher-layer signaling has a mapping relationship with the CMR or CMR group.

[0534] In one embodiment of this application, the way the STRP measurement hypothesis is mapped to the CSI report includes:

[0535] The PMI and CQI granularity in the CSI report is bandwidth, and the mapping content of the STRP measurement assumption in the CSI report includes one or more of the following: CRI, newly defined indication, RI, LI, PMI and CQI;

[0536] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0537] The PMI and CQI granularity in the CSI report is bandwidth. The mapping content of the joint transmission measurement assumption in the CSI report includes one or more of the following: one or more CRIs, newly defined indication fields, one or more RIs, one or more LIs, one or more PMIs, and one or more CQIs.

[0538] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0539] The PMI and CQI granularity in the CSI report is bandwidth, and the mapping content of the joint transmission measurement assumption in the CSI report includes: Part 1 and Part 2;

[0540] The first part includes one or more of the following: a CRI, a newly defined instruction, multiple RIs, a LI, a PMI, and a CQI; the second part includes one or more of the following: a LI, a PMI, and a CQI.

[0541] or,

[0542] The first part includes one or more of the following: multiple CRIs, multiple RIs, one LI, one PMI, and one CQI; the second part includes one or more of the following: one LI, one PMI, and one CQI.

[0543] or,

[0544] The first part includes one or more of the following: a CRI, multiple RIs, a LI, a PMI, and a CQI; the second part includes one or more of the following: a LI, a PMI, and a CQI.

[0545] Alternatively, the way the STRP measurement assumption is mapped to the CSI report includes:

[0546] The PMI and CQI granularity in the CSI report are sub-bands, and the mapping content of the STRP measurement hypothesis in the CSI report includes a first part, a second part, and a third part.

[0547] The first part includes one or more of the following: a CRI, a newly defined indicator, an RI, a wideband channel quality indicator for the first transport block, a subband channel quality indicator for the first transport block, and a non-zero wideband amplitude coefficient; the second part includes one or more of the following: a wideband channel quality indicator for the second transport block, an LI, and a bandwidth precoding matrix indicator; the third part includes one or more of the following: an even subband channel quality indicator for the second transport block, an even subband precoding matrix indicator, an odd subband channel quality indicator for the second transport block, and an odd subband precoding matrix indicator.

[0548] or,

[0549] The first part includes one or more of the following: a CRI, an RI, a bandwidth channel quality indicator for the first transport block, a subband channel quality indicator for the first transport block, and a non-zero bandwidth amplitude coefficient; the second part includes one or more of the following: a bandwidth channel quality indicator for the second transport block, an LI, and a subband precoding matrix indicator; the third part includes one or more of the following: an even-numbered subband channel quality indicator for the second transport block, an even-numbered subband precoding matrix indicator, an odd-numbered subband channel quality indicator for the second transport block, and an odd-numbered subband precoding matrix indicator.

[0550] Alternatively, the joint transport measurement assumption can be mapped to the CSI report in the following ways:

[0551] The PMI and CQI granularity in the CSI report are sub-bands, and the mapping content of the NCJT measurement false in the CSI report includes a first part, a second part, and a third part.

[0552] The first part includes one or more of the following: a CRI, a newly defined indicator, one or more RIs, a bandwidth channel quality indicator for the first transport block, a subband channel quality indicator for the first transport block, and one or more non-zero bandwidth amplitude coefficients; the second part includes one or more of the following: a bandwidth channel quality indicator for the second transport block, one or more LIs, one or more bandwidth precoding matrix indicators, and bandwidth channel quality indicators for multiple transport blocks; the third part includes one or more of the following: an even subband channel quality indicator for the second transport block, multiple even subband precoding matrix indicators, multiple even subband channel quality indicators for the second transport block, multiple odd subband channel quality indicators for the second transport block, multiple odd subband precoding matrix indicators, an odd subband channel quality indicator for the first transport block, and an odd subband channel quality indicator for the second transport block.

[0553] or,

[0554] The first part includes one or more of the following: one or more CRIs, one or more RI fields, bandwidth channel quality indicator of the first transport block, subband channel quality indicator of the first transport block, and one or more non-zero wideband amplitude coefficients; the second part includes one or more of the following: bandwidth channel quality indicator of the second transport block, one or more LIs, multiple bandwidth precoding matrix indicators, bandwidth channel quality indicator of the first transport block, and bandwidth channel quality indicator of the second transport block; the third part includes one or more of the following: even subband channel quality indicator of the second transport block, multiple even subband coding matrix indicators, even subband channel quality indicator of the first transport block, even subband channel quality indicator of the second transport block, one even subband coding matrix indicator, odd subband channel quality indicator of the second transport block, multiple odd subband coding matrix indicators, and multiple odd subband channel quality indicators of the transport blocks.

[0555] or,

[0556] The first part includes one or more of the following: CRI, one or more RI, bandwidth channel quality indicator of the first transport block, subband channel quality indicator of the first transport block, and one or more non-zero wideband amplitude coefficients; the second part includes one or more of the following: bandwidth channel quality indicators of multiple second transport blocks, one or more LI, one or more bandwidth precoding matrix indicators, bandwidth channel quality indicator of the first transport block, and bandwidth channel quality indicator of the second transport block; the third part includes one or more of the following: even subband channel quality indicator of the second transport block, one or more even bandwidth precoding matrix indicators, subband channel quality indicator of the first transport block, subband channel quality indicator of the second transport block, odd subband channel quality indicator of multiple second transport blocks, one or more odd bandwidth precoding matrix indicators, and odd subband channel quality indicator of the first transport block.

[0557] In one embodiment of this application, the CSI report includes one or more of the following:

[0558] At least part of the mapping content of the joint transmission measurement assumption;

[0559] At least part of the mapping content of the STRP measurement hypothesis.

[0560] In one embodiment of this application, the transmission priority of each CSI report among the plurality of CSI reports includes one or more of the following:

[0561] For multiple non-periodic CSI reports based on PUSCH reports, and all of them are non-bearer L1-RSRP or L1-SINR, the CSI report of MTRP has higher priority than the CSI report of non-MTRP.

[0562] Multiple semi-persistent CSI reports based on PUSCH reports, all of which are non-bearer L1-RSRP or L1-SINR reports, have higher priority for MTRP CSI reports than for non-MTRP CSI reports;

[0563] Multiple semi-persistent CSI reports based on PUCCH reports, all of which are non-bearer L1-RSRP or L1-SINR reports, have higher priority for MTRP CSI reports than for non-MTRP CSI reports;

[0564] Based on multiple periodic CSI reports from the PUCCH report, all of which are non-bearer L1-RSRP or L1-SINR reports, the CSI report for MTRP has higher priority than the CSI report for non-MTRP.

[0565] In one embodiment of this application, the transmission priority of CSI content in the CSI report of the multi-TPR includes one or more of the following:

[0566] The transmission priority of the joint transmission measurement hypothesis is higher than the transmission priority of the STRP measurement hypothesis;

[0567] The transmission priority of the joint transmission measurement assumption broadband information and the TRP measurement assumption broadband information is higher than the transmission priority of the joint transmission measurement assumption subband information and the TRP measurement assumption subband information.

[0568] In the embodiments of this application Transmission device It can be a device, an operating system-equipped device or electronic device, or a component, integrated circuit, or chip in network-side equipment. This device or electronic device can be a base station or other network-side equipment.

[0569] The apparatus provided in this application embodiment can achieve... Figure 3 The various processes implemented in the method embodiments shown achieve the same technical effects, and will not be described again here to avoid repetition.

[0570] This application embodiment also provides a terminal, including a processor and a communication interface. The communication interface is used to feed back one or more CSI reports to a network-side device. A first field in the CSI report represents a first measurement hypothesis; wherein the first measurement hypothesis includes: X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, where X is a natural number; or, the first measurement hypothesis is one of all STRP measurement hypotheses and the joint transmission measurement hypothesis. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 6 To realize the hardware structure diagram of a terminal according to an embodiment of this application, the terminal 600 includes, but is not limited to, at least some of the following components: radio frequency unit 601, network module 602, audio output unit 603, input unit 604, sensor 605, display unit 606, user input unit 607, interface unit 608, memory 609, and processor 610.

[0571] Those skilled in the art will understand that the terminal 600 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 610 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 6 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0572] It should be understood that, in this embodiment, the input unit 604 may include a graphics processing unit (GPU) 6041 and a microphone 6042. The GPU 6041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 606 may include a display panel 6061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 607 includes a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0573] In this embodiment, the radio frequency unit 601 receives downlink data from the network-side device and processes it for the processor 610; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0574] The memory 609 can be used to store software programs or instructions and various data. The memory 609 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 609 may include high-speed random access memory and non-volatile memory, wherein the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0575] Processor 610 may include one or more processing units; optionally, processor 610 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 610.

[0576] The terminal provided in this application embodiment can achieve... Figure 2 The various processes implemented in the method embodiments shown achieve the same technical effects, and will not be described again here to avoid repetition.

[0577] This application embodiment also provides a network-side device, including a processor and a communication interface, the communication interface being used to receive one or more CSI reports, the CSI reports including a first field corresponding to a first measurement hypothesis;

[0578] The first measurement hypothesis includes: X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, where X is a positive integer; or, the first measurement hypothesis is one of all STRP measurement hypotheses and the joint transmission measurement hypothesis. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.

[0579] Specifically, embodiments of this application also provide a network-side device. For example... Figure 7 As shown, the network-side device 700 includes an antenna 701, a radio frequency (RF) device 702, and a baseband device 703. The antenna 701 is connected to the RF device 702. In the uplink direction, the RF device 702 receives information through the antenna 701 and transmits the received information to the baseband device 703 for processing. In the downlink direction, the baseband device 703 processes the information to be transmitted and sends it to the RF device 702. The RF device 702 processes the received information and transmits it through the antenna 701.

[0580] The aforementioned frequency band processing device can be located in the baseband device 703. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 703, which includes a processor 704 and a memory 705.

[0581] The baseband device 703 may, for example, include at least one baseband board on which multiple chips are disposed, such as... Figure 7 As shown, one of the chips, for example, is a processor 704, which is connected to a memory 705 to call the program in the memory 705 and execute the network device operations shown in the above method embodiment.

[0582] The baseband device 703 may also include a network interface 706 for exchanging information with the radio frequency device 702, such as a common public radio interface (CPRI).

[0583] Specifically, the network-side device in this application embodiment further includes: instructions or programs stored in memory 705 and executable on processor 704, wherein processor 704 calls the instructions or programs in memory 705 to execute. Figure 5 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0584] This application also provides a computer program / program product, which is stored in a non-volatile storage medium and executed by at least one processor to implement the following: Figure 2 or Figure 3 The steps of the processing method described above.

[0585] This application embodiment also provides a readable storage medium storing a program or instructions that, when executed by a processor, implement the above-described functionality. Figure 2 or Figure 3 The various processes of the method embodiments shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0586] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0587] This application embodiment also provides a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the above. Figure 3 or Figure 4 The various processes of the method embodiments shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0588] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0589] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0590] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0591] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A channel state information (CSI) feedback method, characterized in that, Comprising: The terminal feeds back one or more CSI reports to the network side device, wherein the CSI report includes a rank indication (RI) field and a CRI field corresponding to the first measurement hypothesis; Wherein, the first measurement hypothesis includes: X single transmission and reception point (STRP) measurement hypotheses and one joint transmission measurement hypothesis, wherein X is an integer greater than or equal to 0; or, the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses; In a case that the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, a bit width of the RI field is a third value, and the third value comprises: 0 or wherein represents a number of all supported rank indications or rank indication combinations; the terminal indicates, to the network side device, that a type of the first measurement hypothesis is an STRP measurement hypothesis or a joint transmission measurement hypothesis through the CRI field in the CSI report; in a case that the type of the first measurement hypothesis is the STRP measurement hypothesis, one code point of the RI field corresponds to one rank indication, and in a case that the type of the first measurement hypothesis is the joint transmission measurement hypothesis, one code point of the RI field corresponds to a group of rank indications. In the case that the first measurement hypothesis includes: X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, the number of the RI field in the CSI report is: X+1, wherein X RI fields correspond to X STRP measurement hypotheses, and 1 RI field corresponds to 1 joint transmission measurement hypothesis; wherein a first RI field corresponds to 1 joint transmission measurement hypothesis, and the bit width of the first RI field is determined according to one or more of the following: the number of antenna ports; the number of all supported rank indication combinations; the bit width of the first RI field is a fifth value, and the fifth value includes: 0 or wherein represents the number of all supported rank indication combinations; or, in the case that X=1, a second RI field corresponds to 1 STRP measurement hypothesis, and the bit width of the second RI field is determined according to one or more of the following: the number of antenna ports; the bit width length corresponding to the number of rank indications allowed by STRP transmission.

2. The method of claim 1, wherein, In the case that the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the RI field is determined according to one or more of the following: The number of antenna ports; The number of all supported rank indications of the terminal; The number of all supported rank indication combinations of the terminal.

3. The method of claim 1, wherein, In case the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, a bit width of a channel state information reference signal resource indicator, CRI, field in the CSI report is: wherein denotes a number of channel measurement resource pairs, CMR pairs, associated with the reporting setting, denotes a number of channel measurement resource pairs, CMR pairs, associated with the reporting setting.

4. The method of claim 1, wherein, In the case that the first measurement hypothesis includes: X STRP measurement hypotheses and one joint transmission measurement hypothesis, and the number of the RI field is X+1, the mapping order of the joint transmission measurement hypothesis and the STRP measurement hypothesis in the RI field includes: the joint transmission measurement hypothesis is prior to the STRP measurement hypothesis.

5. The method of claim 1, wherein, The method further comprises: Receiving high layer signaling for limiting the RI field and the CRI field in the CSI report, wherein the high layer signaling corresponds to one TRP, or the high layer signaling has a mapping relationship with a CMR or a CMR group.

6. The method of claim 1, wherein, In the case that the first measurement hypothesis includes a joint transmission measurement hypothesis, The mapping of the joint transmission measurement hypothesis to the CSI report includes: The PMI and CQI granularity in the CSI report is bandwidth, and the mapping content of the joint transmission measurement hypothesis in the CSI report includes: one CRI, one RI, multiple LIs, multiple PMIs, and one CQI.

7. The method of claim 6, wherein, The CSI report includes: At least part of the mapping content of the joint transmission measurement hypothesis.

8. The method of claim 1, wherein, The method further comprises: In the case that the multiple CSI reports include a multi-TRP CSI report, the terminal determines the transmission priority of the CSI report in the multiple CSI reports, and one or more of the transmission priority of the CSI content in the multi-TRP CSI report; Wherein, the CSI content in the multi-TRP CSI report includes one or more of the following: CSI content corresponding to the joint transmission measurement hypothesis, and CSI content corresponding to the STRP measurement hypothesis.

9. The method of claim 8, wherein, The transmission priority of each CSI report in the multiple CSI reports includes one or more of the following: In the case of multiple aperiodic CSI reports based on a physical uplink shared channel (PUSCH) report, and all of which are non-bearing layer 1 reference signal received power (L1-RSRP) or layer 1 signal to interference plus noise ratio (L1-SINR), the priority of the multi-TRP CSI report is higher than that of the non-multi-TRP CSI report; In the case of multiple semi-persistent CSI reports based on a PUSCH report, and all of which are non-bearing L1-RSRP or L1-SINR, the priority of the multi-TRP CSI report is higher than that of the non-multi-TRP CSI report; The priority of the CSI report of the multi-TRP is higher than the priority of the CSI report of the non-multi-TRP, based on multiple semi-persistent CSI reports of a physical uplink control channel (PUCCH) report, and both are non-carried L1-RSRP or L1-SINR. The priority of the CSI report of the multi-TRP is higher than the priority of the CSI report of the non-multi-TRP, based on multiple periodic CSI reports of a PUCCH report, and both are non-carried L1-RSRP or L1-SINR.

10. The method of claim 8, wherein, The priority of the transmission of the CSI content in the CSI report of the multi-TRP includes: The priority of the transmission of the joint transmission measurement assumption is higher than the priority of the transmission of the STRP measurement assumption.

11. A CSI feedback method, comprising: It includes: A network side device receives one or more CSI reports, wherein the CSI reports include a rank indication (RI) field and a CSI-RS identifier (CRI) field corresponding to a first measurement assumption; The first measurement assumption includes X STRP measurement assumptions and one joint transmission measurement assumption, where X is an integer greater than or equal to 0; or the first measurement assumption is one of all STRP measurement assumptions and joint transmission measurement assumptions. In a case that the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, a bit width of the RI field is a third value, the third value comprises: 0 or wherein represents a number of all supported rank indications or rank indication combinations; the CRI field in the CSI report is used to indicate a type of the first measurement hypothesis to the network side device is a STRP measurement hypothesis or a joint transmission measurement hypothesis; in a case that the type of the first measurement hypothesis is the STRP measurement hypothesis, one code point of the RI field corresponds to one rank indication, in a case that the type of the first measurement hypothesis is the joint transmission measurement hypothesis, one code point of the RI field corresponds to a group of rank indications; In a case where the first measurement hypothesis includes X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, a quantity of the RI field in the CSI report is X+1, where X RI fields correspond to the X STRP measurement hypotheses, and 1 RI field corresponds to the 1 joint transmission measurement hypothesis; wherein a first RI field corresponds to the 1 joint transmission measurement hypothesis, and a bit width of the first RI field is determined according to one or more of the following: a quantity of antenna ports; a quantity of all supported rank indication combinations; the bit width of the first RI field is a fifth value, the fifth value including 0 or wherein represents the quantity of all supported rank indication combinations; or, in a case where X=1, a second RI field corresponds to the 1 STRP measurement hypothesis, and a bit width of the second RI field is determined according to one or more of the following: a quantity of antenna ports; a bit width length corresponding to a quantity of rank indications allowed by the STRP transmission.

12. A CSI feedback apparatus, applied to a terminal, characterized in that, It includes: A first sending module is configured to feed back one or more CSI reports to a network side device, wherein the CSI reports include a rank indication (RI) field and a CSI-RS identifier (CRI) field corresponding to a first measurement assumption; The first measurement assumption includes X STRP measurement assumptions and one joint transmission measurement assumption, where X is an integer greater than or equal to 0; or the first measurement assumption is one of all STRP measurement assumptions and joint transmission measurement assumptions. In a case that the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, a bit width of the RI field is a third value, and the third value comprises: 0 or wherein represents a number of all supported rank indications or rank indication combinations; the terminal indicates, to the network side device, that a type of the first measurement hypothesis is an STRP measurement hypothesis or a joint transmission measurement hypothesis through the CRI field in the CSI report; in a case that the type of the first measurement hypothesis is the STRP measurement hypothesis, one code point of the RI field corresponds to one rank indication, and in a case that the type of the first measurement hypothesis is the joint transmission measurement hypothesis, one code point of the RI field corresponds to a group of rank indications. In the case that the first measurement hypothesis includes: X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, the number of the RI field in the CSI report is: X+1, wherein X RI fields correspond to X STRP measurement hypotheses, and 1 RI field corresponds to 1 joint transmission measurement hypothesis; wherein a first RI field corresponds to 1 joint transmission measurement hypothesis, and the bit width of the first RI field is determined according to one or more of the following: the number of antenna ports; the number of all supported rank indication combinations; the bit width of the first RI field is a fifth value, and the fifth value includes: 0 or wherein represents the number of all supported rank indication combinations; or, in the case that X=1, a second RI field corresponds to 1 STRP measurement hypothesis, and the bit width of the second RI field is determined according to one or more of the following: the number of antenna ports; the bit width length corresponding to the number of rank indications allowed by STRP transmission.

13. A CSI feedback apparatus, applied to a network side device, comprising: It includes: A second receiving module is configured to receive one or more CSI reports, wherein the CSI reports include a rank indication (RI) field and a CSI-RS identifier (CRI) field corresponding to a first measurement assumption; The first measurement assumption includes X STRP measurement assumptions and one joint transmission measurement assumption, where X is an integer greater than or equal to 0; or the first measurement assumption is one of all STRP measurement assumptions and joint transmission measurement assumptions. In a case that the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, a bit width of the RI field is a third value, the third value comprises: 0 or wherein represents a number of all supported rank indications or rank indication combinations; the CRI field in the CSI report is used to indicate a type of the first measurement hypothesis to the network side device is a STRP measurement hypothesis or a joint transmission measurement hypothesis; in a case that the type of the first measurement hypothesis is the STRP measurement hypothesis, one code point of the RI field corresponds to one rank indication, in a case that the type of the first measurement hypothesis is the joint transmission measurement hypothesis, one code point of the RI field corresponds to a group of rank indications; In the case that the first measurement hypothesis includes: X STRP measurement hypotheses and 1 joint transmission measurement hypothesis, the number of the RI field in the CSI report is: X+1, wherein X RI fields correspond to X STRP measurement hypotheses, and 1 RI field corresponds to 1 joint transmission measurement hypothesis; wherein a first RI field corresponds to 1 joint transmission measurement hypothesis, and the bit width of the first RI field is determined according to one or more of the following: the number of antenna ports; the number of all supported rank indication combinations; the bit width of the first RI field is a fifth value, and the fifth value includes: 0 or wherein represents the number of all supported rank indication combinations; or, in the case that X=1, a second RI field corresponds to 1 STRP measurement hypothesis, and the bit width of the second RI field is determined according to one or more of the following: the number of antenna ports; the bit width length corresponding to the number of rank indications allowed by STRP transmission.

14. A terminal, characterized by comprising: It includes: A processor, a memory, and a program stored on the memory and executable on the processor, wherein the program is executed by the processor to implement the steps of the method of any one of claims 1 to 10.

15. A network-side device, comprising: It includes: A processor, a memory, and a program stored on the memory and executable on the processor, wherein the program is executed by the processor to implement the steps of the method of claim 11.

16. A readable storage medium, characterized by, The readable storage medium stores a program or instructions, which are executed by the processor to implement the steps of the method of any one of claims 1 to 11.

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