CSI feedback method, device, apparatus and readable storage medium

Abstract

The present application discloses a CSI feedback method, an apparatus, a device, and a readable storage medium, the method including: a terminal feeding back one or more CSI reports to a network side device, the CSI report including a first field corresponding to a first measurement hypothesis, where the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a natural number, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypothesis.

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims priority to Chinese Patent Application No. 202110309794.X filed in China on March 23, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of communication technology, and more particularly to a Channel State Information (CSI) feedback method, apparatus, device and readable storage medium. [Background technology]

[0003] For multi-transmitting receiving point (MTRP) / multi-panel scenarios, the reliability of transmission and throughput performance can be improved, for example, a terminal can receive the same or different data from multiple TRPs. The backhaul between multi-TRPs can be divided into ideal backhaul and non-ideal backhaul. In the case of non-ideal backhaul, the interaction information between multi-TRPs has a relatively large delay and is relatively suitable for independent scheduling, and acknowledgement (ACK) / negative acknowledgement (NACK) and CSI report are fed back to each TRP respectively. Generally, it is applied to multiple downlink control information (DCI) scheduling, that is, each TRP transmits a respective physical downlink control channel (PDCCH), each PDCCH schedules a respective physical downlink shared channel (PDSCH), and multiple control resource sets (CORESETs) configured for a terminal are associated with different Radio Resource Control (RRC) parameter control resource set pool indexes (CORESET PoolIndex) and correspond to different TRPs. Multiple PDSCHs scheduled by multiple DCIs may not overlap, may overlap partially, or may overlap completely in time-frequency resources. In the overlapped time-frequency resources, each TRP performs precoding independently based on each channel, and the terminal receives multi-layer data streams belonging to multiple PDSCHs in a non-coherent joint transmission (NCJT) manner.

[0004] In the ideal backhaul case, real-time interaction between scheduling information and UE feedback information is possible between multiple TRPs. In addition to the above-mentioned multiple DCIs that can schedule multiple PDSCHs, PDSCHs can also be scheduled by a single DCI, including several transmission methods such as the following:

[0005] (1) Space Division Multiplexing (SDM): Different data layers of the same Transport Block (TB) are from NCJTs of different TRPs.

[0006] (2) Frequency Division Multiplexing (FDM): The same TB and the same redundancy version (RV) are mapped to different frequency domain resources and transmitted from different TRPs, or different RVs of the same TB are mapped to different frequency domain resources and transmitted from different TRPs.

[0007] (3) Time Division Multiplexing (TDM): Multiple repetitions of different RVs of the same TB from different TRPs, e.g., repetition within one slot or repetition across multiple slots.

[0008] At this time, the ACK / NACK feedback and the CSI report can be fed back to any one of the TRPs.

[0009] However, conventional CSI report mappings are primarily designed for one measurement hypothesis and cannot support various measurement hypotheses well. Summary of the Invention [Problem to be solved by the invention]

[0010] The embodiments of the present application provide a CSI feedback method, an apparatus, a device, and a readable storage medium that can solve the problem of how a terminal reports a CSI report in a scenario having different types of measurement hypotheses. [Means for solving the problem]

[0011] According to a first aspect, there is provided a channel state information (CSI) feedback method, the method comprising: The terminal feeds back one or more CSI reports to a network side device, the CSI report including a first field corresponding to a first measurement hypothesis; Here, the first measurement hypothesis includes X single transmitting / receiving point STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a natural number, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypothesis.

[0012] According to a second aspect, there is provided a CSI feedback method, the method comprising: The method includes receiving one or more CSI reports from a network side device, the CSI reports including a first field corresponding to a first measurement hypothesis; Here, the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a positive integer, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypothesis.

[0013] According to a third aspect, there is provided a CSI feedback device for use in a terminal, the device comprising: A first transmitting module for feeding back one or more CSI reports to a network side device, wherein a first field in the CSI report represents a first measurement hypothesis; Here, the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a natural number, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypothesis.

[0014] According to a fourth aspect, there is provided a CSI feedback device for use in a network side device, the device comprising: a second receiving module for receiving one or more CSI reports, the CSI reports including a first field corresponding to a first measurement hypothesis; Here, the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a positive integer, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypothesis.

[0015] According to a fifth aspect, there is provided a terminal comprising a processor, a memory and a program stored in the memory and operable to run on the processor, the program being operable, when executed by the processor, to implement the steps of the method of the first aspect.

[0016] According to a sixth aspect there is provided a terminal comprising a processor and a communications interface, wherein said processor, when executed, is adapted to implement the steps of the method according to the first aspect.

[0017] According to a seventh aspect, there is provided a network side device comprising a processor, a memory, and a program stored in the memory and operable to run on the processor, the program, when executed by the processor, realising the steps of the method according to the second aspect.

[0018] According to an eighth aspect there is provided a network side device comprising a processor and a communications interface, wherein said communications interface, when executed, is adapted to implement the steps of the method according to the second aspect.

[0019] According to a ninth aspect, there is provided a readable storage medium having stored thereon a program or instructions which, when executed by a processor, effectuates the steps of the method of the first or second aspect.

[0020] According to a tenth aspect, there is provided a computer program / program product, the computer program / program product being stored on 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 according to the first or second aspect.

[0021] According to an eleventh aspect, there is provided a chip, the chip including a processor and a communication interface, the communication interface coupled to the processor, the processor running a program or instructions and adapted to implement the method of processing according to the first or second aspect.

[0022] According to a twelfth aspect, an embodiment of the present application provides an electronic device, configured to perform the steps of the method according to the first aspect or configured to perform the steps of the method according to the second aspect. Effect of the Invention

[0023] In an embodiment of the present application, a terminal can report the contents of one or more measurement hypotheses among various measurement hypothesis types to a network side device via a first field in a CSI report, thereby reducing the feedback overhead of the CSI report and better supporting MTRP transmission. [Brief description of the drawings]

[0024] [Figure 1] 1 is a structural diagram of a wireless communication system to which an embodiment of the present application can be applied; [Diagram 2]1 is a flowchart of a CSI feedback method according to an embodiment of the present application. [Diagram 3] 2 is a second flowchart of a CSI feedback method according to an embodiment of the present application. [Figure 4] 1 is a schematic diagram of a CSI feedback device according to an embodiment of the present application; [Diagram 5] 2 is a schematic diagram of a CSI feedback device according to an embodiment of the present application; [Figure 6] 1 is a schematic diagram of a terminal according to an embodiment of the present application; [Figure 7] FIG. 2 is a schematic diagram of a network side device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] The following clearly describes the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application are all within the scope of protection of the present application.

[0026] The terms "first," "second," etc. in the specification and claims of the present application are intended to distinguish between similar objects and are not intended to describe a specified order or sequence. It is to be understood that the terms so used are interchangeable where appropriate, such that the embodiments of the present application may be performed in an order other than that shown or described herein, and that the objects distinguished by "first" and "second" are generally of the same type and do not limit the number of objects, e.g., the first object may be one or more. Note that in the specification and claims, "and" refers to at least one of the objects connected, and the character " / " generally refers to an "or" relationship between the related objects.

[0027] It should be noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be applied to 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 the embodiments of the present application are always used interchangeably, and the techniques described may be used in the above-mentioned systems and radio technologies, or in other systems and radio technologies. Although the following description describes a New Radio (NR) system for illustrative purposes and uses NR terminology in most of the following description, these technologies may also be used in applications other than NR system applications, such as sixth generation (6G) systems. th This may be applied to a 6G (6th Generation) communication system.

[0028] Referring to FIG. 1, the figure shows a structural diagram of a wireless communication system to which the embodiment of the present application can be applied. The wireless communication system includes a terminal 11 and a network side device 12. Here, the terminal 11 may be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a terminal side device such as a mobile phone, a tablet computer, a laptop computer (or called a notebook computer), a personal digital assistant (PDA), a palmtop computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), etc., and the wearable device includes a smart watch, a bracelet, an earphone, a pair of glasses, etc. It should be noted that the specific type of the terminal 11 in the embodiment of the present application is not limited.

[0029] The network side equipment 12 may be a base station or a core network, where the base station ,a access point, base transceiver station (BTS), radio base station, radio transmitter / receiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, Wireless Local Area Networks (WLAN) access point, Wireless Fidelity (WiFi) node, transmit / receive point (Tx / Rx), Transmission Reception Point, TRP), radio access network node, or any other suitable term in the art, and as long as the same technical effect is achieved, the base station is not limited to the specified technical term. It should be noted that in the embodiments of this application, only base stations in an NR system are taken as examples, but the specific type of base station is not limited.

[0030] In the following, the CSI feedback method, apparatus, device and readable storage medium according to the embodiments of the present application will be described in detail through several embodiments and application scenarios thereof in conjunction with the drawings.

[0031] Referring to FIG. 2 , an embodiment of the present application provides a CSI feedback method, and specific steps include: step 201 .

[0032] Step 201: A terminal feeds back one or more CSI reports to a network side device, the CSI report including a first field corresponding to a first measurement hypothesis; Here, the first measurement hypothesis includes X single TRP (STRP) measurement hypotheses and one 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 the STRP measurement hypotheses and the joint transmission measurement hypothesis.

[0033] Optionally, some CSI information or CSI content obtained in the first measurement hypothesis (eg, rank indicator, channel state information reference signal resource indicator, precoding matrix indicator, etc.) is mapped to the first field.

[0034] Alternatively, the first measurement hypothesis includes one joint transmission measurement hypothesis, or the first measurement hypothesis includes one STRP measurement hypothesis and one joint transmission measurement hypothesis, or the first measurement hypothesis includes two STRP measurement hypotheses and one joint transmission measurement hypothesis.

[0035] Optionally, the first measurement hypothesis is the best one of all the STRP measurement hypotheses and the joint transmission measurement hypotheses, e.g., STRP measurement hypothesis 1, STRP measurement hypothesis 2, STRP measurement hypothesis 3, joint transmission measurement hypothesis 1, and joint transmission measurement hypothesis 2, where STRP measurement hypothesis 3 is the best measurement hypothesis, then STRP measurement hypothesis 3 is the first measurement hypothesis.

[0036] In this specification, joint transmission (JT) may include non-coherent joint transmission (NCJT) and coherent joint transmission (CJT).

[0037] In one embodiment of the present 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 (1) The number of antenna ports (e.g., one antenna port, two antenna ports, four antenna ports, and more than four antenna ports); (2) A bit width length corresponding to the number of rank indicators allowed by a single TRP transmission; and (3) a bit width length corresponding to the number of rank indicators allowed by the joint transmission; and (4) the number of all rank indicators supported by the terminal; and (5) the number of all rank indicator combinations supported by the terminal.

[0038] The number of all rank indicators supported by the terminal may be understood as the number of rank indicators of a single TRP transmission supported by the terminal and / or the number of rank indicators of a joint transmission supported by the terminal. The number of all rank indicator combinations supported by the terminal may be understood as the number of rank indicator combinations of a single TRP transmission supported by the terminal and / or the number of rank indicator combinations of a joint transmission supported by the terminal. Here, support may be understood as allowance.

[0039] In one embodiment of the present application, the bit width of the RI field is one of the following: (1)0, also teeth JPEG0007627996000001.jpg16161 、 or JPEG0007627996000002.jpg16161 、 or JPEG0007627996000003.jpg16161, or JPEG0007627996000004.jpg16161, or a first value that includes JPEG0007627996000005.jpg16161, For example, when N=2, if two TRPs each have only one antenna port, the bit width of the RI field is 0; If one TRP has only one antenna port and another TRP has two antenna ports, the bitwidth is JPEG0007627996000006.jpg13161, If one TRP has two antenna ports and another TRP has two antenna ports, the bitwidth is JPEG0007627996000007.jpg15161, If one TRP has two antenna ports and another TRP has four antenna ports, the bitwidth is JPEG0007627996000008.jpg14161, If one TRP has four antenna ports and another TRP has four antenna ports, the bitwidth is JPEG0007627996000009.jpg13161, If each TRP also has four or more antenna ports, the bitwidth is JPEG0007627996000010.jpg8161, (2) 0 or JPEG0007627996000011.jpg9161, or JPEG0007627996000012.jpg9161, or JPEG0007627996000013.jpg9161, or JPEG0007627996000014.jpg9161, or a second value comprising JPEG0007627996000015.jpg9161, JPEG0007627996000016.jpg7161 represents the number of all supported rank indicator combinations, (3) 0 or a third value including JPEG0007627996000017.jpg7161, JPEG0007627996000018.jpg7161 represents the number of all supported rank indicators or rank indicator combinations, Where: JPEG0007627996000019.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000020.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission; JPEG0007627996000021.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; JPEG0007627996000022.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the Nth TRP joint transmission, where N is 2 or greater.

[0040] As can be appreciated, an Nth TRP refers to the Nth TRP, e.g., when N is equal to 2, it is identified as the second TRP or the second TRP.

[0041] In one embodiment of the present application, when the bit width of the RI field is a first value, if the first measurement hypothesis is a STRP measurement hypothesis, one codepoint in the RI field corresponds to one rank indicator, and if the first measurement hypothesis is a joint transmission measurement hypothesis, the first codepoint in the RI field corresponds to one rank indicator. JPEG0007627996000023.jpg 8161 bits correspond to one rank indicator of the first TRP, JPEG0007627996000024.jpg8161 bit or higher JPEG0007627996000025.jpg 8161 bits correspond to one rank indicator of the Nth TRP or the first JPEG0007627996000026.jpg 8161 bits correspond to one rank indicator of the first TRP and the last JPEG0007627996000027.jpg 8161 bits correspond to one rank indicator of the Nth TRP.

[0042] In one embodiment of the present application, when the bit width of the RI field is a second value, if the first measurement hypothesis is a STRP measurement hypothesis, one code point of the RI field corresponds to one rank indicator, and if the first measurement hypothesis is a joint transmission measurement hypothesis, one code point of the RI field corresponds to a set of rank indicators.

[0043] For example, when reporting a joint transmission measurement hypothesis, as shown in Table 1, if the index value indicated by the RI field is 2, it represents that the set of rank indicators for the JT transmission are 2 and 1.

[0044] [Table 1]

[0045] In one embodiment of the present 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.

[0046] For example, as shown in Table 2, when the index value indicated by the RI field is 2, it indicates a STRP transmission and the rank is 3, and when the index value indicated by the RI field is 10, it indicates a JT transmission and the set of rank indicators are 2 and 1.

[0047] [Table 2]

[0048] In one embodiment of the present application, when the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of a channel state information reference signal resource indicator (CSI-RS resource indicator, CRI) field in the CSI report is: JPEG0007627996000030.jpg8161, where: JPEG0007627996000031.jpg7161 represents the number of channel measurement resources associated with the reporting configuration, JPEG0007627996000032.jpg7161 represents the number of Channel Measurement Resource (CMR) pairs associated with the reporting configuration.

[0049] Here, one CMR pair is used to measure one joint transmission measurement hypothesis, ie, N may represent the number of joint transmission measurement hypotheses that need to be measured.

[0050] In one embodiment of the present application, the method comprises: When the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the terminal further includes indicating to the network side device via the first field in the CSI report that the type of the first measurement hypothesis is a STRP measurement hypothesis or a joint transmission measurement hypothesis; wherein the first field is one of the following: (1) CRI Field, For example, K s For N=2 and N=1, the CRI field adopts the above-mentioned definition method, where CRI0 represents CMR1, CRI1 represents CMR2, and CRI2 represents CMR1 and CMR2, so that when a user reports CRI2, it represents a joint transmission measurement hypothesis.

[0051] (2) RI Field, The RI field employs the definition method described above.

[0052] Or it can be indicated by a combination of RIs in other ways, e.g. K s = 2 and N = 1, the user reports RI1 = 0 and RI2 = 1, where if only RI2 is a legal value, the user reports the STRP measurement hypothesis, and corresponds to the TRP corresponding to RI2; if the user reports RI1 = 1 and RI2 = 1, where both of them are legal values, the user reports a joint transmission measurement hypothesis; Here, the legal value may be determined based on one or more of the following: RI restrictions, the number of ports, and RI combinations supported by joint transmission.

[0053] (3) Newly defined indicator fields.

[0054] For example, a newly defined indicator field is the Joint Transmission Indicator field (JT Indicator field), s For N=2 and N=1, the CRI field is defined such that CRI0 represents CMR1 and CRI1 represents CMR2, so that if a user reports as CRI0 and a STRP transmission hypothesis, the joint transmission indicator field is 0, and if a user reports as CRI0 and a joint transmission hypothesis, the joint transmission indicator field is 1.

[0055] In one embodiment of the present application, when the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmit measurement hypothesis, the number of RI fields in the CSI report is (1) X+1, where X RI fields correspond to X STRP measurement hypotheses and one RI field corresponds to one joint transmission measurement hypothesis; (2) X+2, where X RI fields correspond to X STRP measurement hypotheses and 2 RI fields correspond to 1 joint transmission measurement hypothesis; (3) one, where one RI field corresponds to X STRP measurement hypotheses and one joint transmission measurement hypothesis; (4) two, where one RI field corresponds to the X STRP measurement hypotheses and one RI field corresponds to one joint transmission measurement hypothesis.

[0056] In one embodiment of the present application, when the number of the RI fields is X+1 or X+2, the mapping order of the joint transmission measurement hypotheses and the STRP measurement hypotheses in the RI fields includes that the joint transmission measurement hypotheses are prioritized over the STRP measurement hypotheses, or that the STRP measurement hypotheses are prioritized over the joint transmission measurement hypotheses.

[0057] In one embodiment of the present application, when the number of the 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: (1) The number of antenna ports (e.g., one antenna port, two antenna ports, four antenna ports, and more than four antenna ports); (2) a bit width length corresponding to the number of rank indicators allowed by the joint transmission; and (3) the number of all rank indicators supported by the terminal; and (4) the number of all rank indicator combinations supported by the terminal.

[0058] Here, the number of all rank indicators supported by the terminal may be understood as the number of rank indicators of joint transmission supported by the terminal. The number of all rank indicator combinations supported by the terminal may be understood as the number of rank indicator combinations of joint transmission supported by the terminal. Here, support may be understood as allowance.

[0059] In one embodiment of the present application, the bit width of the first RI field is: (1) 0 or JPEG0007627996000033.jpg8161, or JPEG0007627996000034.jpg8161, or JPEG0007627996000035.jpg8161, or JPEG0007627996000036.jpg8161, or a fourth value including JPEG0007627996000037.jpg8161, Where: JPEG0007627996000038.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission; JPEG0007627996000039.jpg8161 is a fourth value representing a bit width length corresponding to the number of rank indicators allowed at the time of the Nth TRP joint transmission; (2) 0 or JPEG0007627996000040.jpg8161, or JPEG0007627996000041.jpg8161, or JPEG0007627996000042.jpg8161, or JPEG0007627996000043.jpg8161, or a fifth value including JPEG0007627996000044.jpg8161, JPEG0007627996000045.jpg7161 is one of the values ​​with a fifth value representing the number of all rank indicator combinations supported.

[0060] In one embodiment of the present application, when the bit width of the first RI field is a fourth value, (1) the first of the first RI fields JPEG0007627996000046.jpg 8161 bits correspond to one rank indicator of the first TRP, JPEG0007627996000047.jpg8161 bit or higher JPEG0007627996000048.jpg8161 bits are two Corresponding to one of the TRP rank indicators By analogy, one rank indicator of the N TRPs corresponds to , (2) or the first of the first RI field JPEG0007627996000049.jpg 8161 bits correspond to one rank indicator of the first TRP and the last JPEG0007627996000050.jpg 8161 bits correspond to one rank indicator of the second TRP, (3) Or, when the bit width of the first RI field is a fifth value, one code point of the first RI field corresponds to a set of rank indicators; Here, N is 2 or more.

[0061] For example, a set of rank indicators may be as shown in Table 3, where if an NCJT measurement hypothesis is reported, then if the index value indicated by the RI field is 2, then the set of rank indicators for the NCJT transmission are 2 and 1.

[0062] [Table 3]

[0063] In one embodiment of the present application, when the number of the 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: (1) The number of antenna ports (e.g., one antenna port, two antenna ports, four antenna ports, and more than four antenna ports); (2) A bit width length corresponding to the number of rank indicators allowed by STRP transmission.

[0064] In one embodiment of the present application, the bit width of the second RI field is a sixth value; The sixth value is 0 or JPEG0007627996000052.jpg8161, or JPEG0007627996000053.jpg8161, or JPEG0007627996000054.jpg8161, or JPEG0007627996000055.jpg8161, or Contains JPEG0007627996000056.jpg8161, Where: JPEG0007627996000057.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000058.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; Here, N is 2 or more.

[0065] In one embodiment of the present application, when the number of the RI fields is one, the bit width of the RI field is: (1) The number of antenna ports (e.g., one antenna port, two antenna ports, four antenna ports, and more than four antenna ports); (2) a bit width length corresponding to the number of rank indicators allowed by the STRP transmission; and (3) the number of all rank indicator combinations supported by the terminal; and (4) a bit width length corresponding to the number of rank indicators allowed by the joint transmission.

[0066] The number of all rank indicator combinations supported by the terminal may be understood as the number of rank indicator combinations of single TRP transmission supported by the terminal and / or the number of rank indicator combinations of joint transmission supported, where support may be understood as tolerance.

[0067] In one embodiment of the present application, the bit width of the RI field is: (1) 0 or JPEG0007627996000059.jpg16161, or JPEG0007627996000060.jpg16161, or JPEG0007627996000061.jpg16161, or JPEG0007627996000062.jpg16161, or a seventh value containing JPEG0007627996000063.jpg15161; (2) 0 or JPEG0007627996000064.jpg8161, or JPEG0007627996000065.jpg8161, or JPEG0007627996000066.jpg8161, or JPEG0007627996000067.jpg8161, or and an eighth value including JPEG0007627996000068.jpg8161, Where: JPEG0007627996000069.jpg7161 represents the number of all supported rank indicator combinations, JPEG0007627996000070.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000071.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission; JPEG0007627996000072.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; JPEG0007627996000073.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of Nth TRP joint transmission, Here, N is 2 or more.

[0068] In one embodiment of the present application, when the number of the RI fields is X+1 or X+2, and X>1, each RI field of the X RI fields corresponds to one STRP measurement hypothesis, and the bit width of each RI field in the X RI fields is: (1) The number of antenna ports (e.g., one antenna port, two antenna ports, four antenna ports, and more than four antenna ports); (2) A bit width length corresponding to the number of rank indicators allowed by STRP transmission.

[0069] In one embodiment of the present application, when the number of the 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: (1) The number of antenna ports of each TRP (e.g., one antenna port, two antenna ports, four antenna ports, and more than four antenna ports); (2) a bit width length corresponding to the number of rank indicators allowed by each TRP transmission, or a bit width length corresponding to the sum of the numbers of rank indicators allowed by all TRP transmissions; (3) the value of X, In one embodiment of the present application, the method comprises: The method further includes receiving higher layer signaling for restricting the first field in the CSI report, where the higher layer signaling has a one-to-one correspondence with a TRP or the higher layer signaling has a mapping relationship with a CMR or a CMR group.

[0070] For example, the higher layer signaling may be typeI-SinglePanel-ri-Restriction, ri-Restriction, typeII-RI-Restriction, typeII-PortSelectionRI-Restriction, typeII-RI-Restriction-r16, or typeII-PortSelectionRI-Restriction-r16.

[0071] In one embodiment of the present application, the scheme for mapping the STRP measurement hypotheses to the CSI reports comprises: The granularity of a precoding matrix indicator (PMI) and a channel quality indicator (CQI) in the CSI report is wideband, and the mapping content of the STRP measurement hypothesis in the CSI report includes one or more of a CRI, a newly defined indicator, an RI, a layer indicator (LI), a PMI, and a CQI; Exemplarily, when the STRP measurement hypothesis is selected and reported and the PMI and CQI granularity is wideband, the mapping content includes: (i) a first CRI, a first NCJT indicator, a first RI, a first LI, a first PMI, and a first CQI; or (ii) a first CRI, a first RI, a first LI, a first PMI, and a first CQI; Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is wideband, and the mapping content of the joint transmission measurement hypotheses in the CSI report includes one or more of one or more CRIs, a newly defined indicator field, one or more RIs, one or more LIs, one or more PMIs, and one or more CQIs; Exemplarily, when an NCJT measurement hypothesis is selected and reported and the PMI and CQI granularity is wideband, the mapping content includes (i) a first CRI, a first NCJT indicator, a first RI, a second RI, a first LI, a second LI, a first PMI, a second PMI, a first CQI, a second CQI, or (ii) a first CRI, a second CRI, a first RI, a second RI, a first LI, a second LI, a first PMI, a second PMI, a first CQI, a second CQI, or (iii) an NCJT CRI, a first RI, a second RI, a first LI, a second LI, a first PMI, a second PMI, a first CQI, a second CQI.

[0072] Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is wideband, and the mapping content of the joint transmission measurement hypothesis in the CSI report includes a first part (part1) and a second part (part2); Wherein the first part includes one or more of a CRI, a newly defined indicator, a plurality of RIs, a LI, a PMI, and a CQI, and the second part includes one or more of a LI, a PMI, and a CQI; Or, Wherein, the first part includes one or more of a plurality of CRIs, a plurality of RIs, one LI, one PMI, and one CQI, and the second part includes one or more of one LI, one PMI, and one CQI; Or, Wherein, the first part includes one or more of a CRI, a plurality of RIs, a LI, a PMI, and a CQI, and the second part includes one or more of a LI, a PMI, and a CQ; For example, when the NCJT measurement hypothesis is selected and reported and the PMI and CQI granularity is wideband, the CSI report is divided into two parts (part1, part2), (i) Part 1 mapping content includes a first CRI, a first NCJT indicator, a first RI, a second RI, a first LI, a first PMI, and a first CQI, and Part 2 mapping content includes a second LI, a second PMI, and a second CQI, or (ii) Part 1 mapping content includes a first CRI, a second CRI, a first RI, a second RI, a first LI, a first PMI, and a first CQI, and Part 2 mapping content includes a second LI, a second PMI, and a second CQI, or (iii) Part 1 mapping content includes an NCJT CRI, a first RI, a second RI, a first LI, a first PMI, and a first CQI, and Part 2 mapping content includes a second LI, a second PMI, and a second CQI.

[0073] Alternatively, the method of mapping the STRP measurement hypotheses to the CSI reports may further include: The PMI and CQI granularity in the CSI report is subband, and the mapping content of the STRP measurement hypothesis in the CSI report includes a first part, a second part, and a third part; Here, the first part includes one or more of a CRI, a newly defined indicator, an RI, a wideband channel quality indicator for a first transmission block (wideband CQI for first TB), a subband channel quality indicator for a first transmission block (subband CQI for first TB), and a non-zero wideband coefficient; the second part includes one or more of a wideband channel quality indicator for a second transmission block (wideband CQI for second TB), an LI, and a wideband precoding matrix indicator (wideband PMI); and the third part includes one or more of an even subband channel quality indicator for a second transmission block (even subband CQI for second TB), an even subband precoding matrix indicator (even subband PMI), an odd subband channel quality indicator for a second transmission block (odd subband CQI for second TB), and an odd subband precoding matrix indicator (odd subband PMI); Or, The first part includes one or more of a CRI, an RI, a wideband channel quality indicator for a first transmission block (wideband CQI for first TB), a subband channel quality indicator for a first transmission block (subband CQI for first TB), and a non-zero wideband coefficient, and the second part includes one or more of a wideband channel quality indicator for a second transmission block (wideband CQI for second TB), an LI, and a Widebandthe third part includes one or more of an even subband channel quality indicator (even subband CQI for second TB), an even subband precoding matrix indicator (even subband PMI), an odd subband channel quality indicator (odd subband CQI for second TB) for the second transmission block, and an odd subband precoding matrix indicator (odd subband PMI); For example, when the STRP measurement hypothesis is selected and reported and the PMI and CQI granularity is subband, the CSI report is divided into two parts (part1, part2 wideband, part2 subband), (i) Part1 mapping content includes a first CRI, a first NCJT indicator, a first RI, a first wideband CQI for first TB, a first subband CQI for first TB, and a first non-zero wideband coefficient; Part2 wideband mapping content includes a first wideband CQI for second TB, a first LI, and a first wideband PMI; Part2 subband mapping content includes a first even subband CQI for second TB, a first even subband PMI, a first odd subband CQI for second TB, and a first odd subband PMI; (ii) the Part1 mapping content includes a first CRI, a first RI, a first wideband CQI for the first TB, a first subband CQI for the first TB, and a first non-zero wideband coefficient; the Part2 wideband mapping content includes a first wideband CQI for the second TB, a first LI, and a first wideband PMI; and the Part2 subband mapping content includes a first even subband CQI for the second TB, a first even subband PMI, a first odd subband CQI for the second TB, and a first odd subband PMI; Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is subband, and the mapping content of the NCJT measurement hypothesis in the CSI report includes a first part, a second part, and a third part; The first part includes one or more of a CRI, a newly defined indicator, one or more RIs, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and one or more non-zero wideband width coefficients; the second part includes one or more of a wideband channel quality indicator for a second transmission block, one or more LIs, one or more wideband precoding matrix indicators, and one or more wideband channel quality indicators for a plurality of transmission blocks; and the third part includes one or more of an even subband channel quality indicator for a second transmission block, a plurality of even subband precoding matrix indicators, a plurality of even subband channel quality indicators for a plurality of second transmission blocks, a plurality of odd subband channel quality indicators for a plurality of second transmission blocks, a plurality of odd subband precoding matrix indicators, an odd subband channel quality indicator for a first transmission block, and an odd subband channel quality indicator for a second transmission block; Or, the first portion includes one or more of CRIs, one or more RI fields, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and one or more non-zero wideband width coefficients; the second portion includes one or more of a wideband channel quality indicator for a second transmission block, one or more LIs, a plurality of wideband precoding matrix indicators, a wideband channel quality indicator for a first transmission block, and a wideband channel quality indicator for a second transmission block; and the third portion includes one or more of an even subband channel quality indicator for a second transmission block, a plurality of even subband coding matrix indicators, an even subband channel quality indicator for a first transmission block, an even subband channel quality indicator for a second transmission block, an even subband coding matrix indicator, an odd subband channel quality indicator for a second transmission block, a plurality of odd subband coding matrix indicators, and an odd subband channel quality indicator for a plurality of transmission blocks; Or, The first portion includes one or more of a CRI, one or more RIs, a wideband channel quality indicator for the first transmission block, a subband channel quality indicator for the first transmission block, and one or more non-zero wideband width coefficients; the second portion includes one or more of a wideband channel quality indicator for a plurality of second transmission blocks, one or more LIs, one or more wideband precoding matrix indicators, a wideband channel quality indicator for the first transmission block, a wideband channel quality indicator for the second transmission block; and the third portion includes one or more of an even subband channel quality indicator for the second transmission block, one or more even wideband precoding matrix indicators, a subband channel quality indicator for the first transmission block, a subband channel quality indicator for the second transmission block, an odd subband channel quality indicator for a plurality of second transmission blocks, one or more odd wideband precoding matrix indicators, and an odd subband channel quality indicator for the first transmission block.

[0074] For example, when the NCJT measurement hypothesis is selected and reported and the PMI and CQI granularity is subband, the CSI report is divided into two parts (part1, part2 wideband, part2 subband), (i) Part1 mapping content includes a first CRI, a first NCJT indicator, a first RI, a second RI, a first wideband CQI for first TB, a first subband CQI for first TB, a first non-zero wideband bandwidth coefficient, and a second non-zero wideband bandwidth coefficient; Part2 wideband mapping content includes a first wideband CQI for second TB, a first LI, a first wideband PMI, a second wideband CQI for first TB, a second wideband CQI for second TB, a second LI, and a second wideband PMI; Part2 subband mapping content includes a first even subband CQI for second TB, a first even subband PMI, a second even subband CQI for first TB, a second even subband CQI for second TB, a second even subband PMI, a first odd subband CQI for second TB, a first odd subband PMI, and a second odd subband CQI for first TB, a second odd subband CQI for second TB, and a second odd subband PMI; (ii) the Part1 mapping content includes a first CRI, a second CRI, a first RI, a second RI, a first wideband CQI for first TB, a first subband CQI for first TB, a first non-zero wideband bandwidth coefficient, and a second non-zero wideband bandwidth coefficient; the Part2 wideband mapping content includes a first wideband CQI for second TB, a first LI, a first wideband PMI, a second wideband CQI for first TB, a second wideband CQI for second TB, a second LI, and a second wideband PMI; and the Part2 subband mapping content includes a first even subband CQI for second TB, a first even subband PMI, a second even subband CQI for first TB, a second even subband CQI for second TB, a second even subband PMI, a first odd subband CQI for second TB, a first odd subband PMI, and a second odd subband CQI for first TB, a second odd subband CQI for second TB, and a second odd subband PMI; (iii) the Part1 mapping content includes an NCJT CRI, a first RI, a second RI, a first wideband CQI for first TB, a first subband CQI for first TB, a first non-zero wideband bandwidth coefficient, and a second non-zero wideband bandwidth coefficient; the Part2 wideband mapping content includes a first wideband CQI for second TB, a first LI, a first wideband PMI, a second wideband CQI for first TB, a second wideband CQI for second TB, a second LI, and a second wideband PMI; and the Part2 subband mapping content includes a first even subband CQI for second TB, a first even subband PMI, a second even subband CQI for first TB, a second even subband CQI for second TB, a second even subband PMI, a first odd subband CQI for second TB, a first odd subband PMI, a second odd subband CQI for first TB, a second odd subband CQI for second TB, includes second odd subband PMI.

[0075] In one embodiment of the present application, the CSI report includes: (1) Mapping content of at least some of the joint transmission measurement hypotheses; (2) Mapping content of at least a portion of the STRP measurement hypotheses is included.

[0076] For example, if the UE selects and reports one STRP measurement hypothesis and one NCJT measurement hypothesis among all STRP and NCJT measurement hypotheses, the CSI report mapping method is as follows: a) Combining the STRP mapping content and the NCJT content described above, for example, combining one STRP CSI and one NCJT CSI into one new CSI report; b) Combining the STRP mapping contents and NCJT contents described above, for example, combining one STRP part 1 and one NCJT part 1 into one new part 1, combining one STRP part 2 and one NCJT part 2 into one new part 2, c) Combining the STRP mapping contents and the NCJT contents described above, for example, combining one STRP part 1 (including only CRI, RI, and non-zero widebandwidth coefficients) and one NCJT part 1 into one new part 1, and combining one STRP part 2 (including only the remaining parts) and one NCJT part 2 into one new part 2; d) Combining the STRP mapping contents and the NCJT contents described above, for example, combining one STRP part 1 (including only RI, non-zero widebandwidth coefficients) and one NCJT part 1 into one new part 1, and combining one STRP part 2 (including only the remaining parts) and one NCJT part 2 into one new part 2; e) Combining the STRP mapping contents and the NCJT contents described above, for example, combining one STRP part 1 and one NCJT part 1 (including only CRI, RI, and non-zero widebandwidth coefficients) into one new part 1, and combining one STRP part 2 and one NCJT part 2 (including only the remaining parts) into one new part 2; f) Combining the STRP mapping contents and NCJT contents described above, which may include, for example, combining part 1 of one STRP and part 1 of one NCJT (including only RI, non-zero wide bandwidth coefficients) as one new part 1, and combining part 2 of one STRP and part 2 of one NCJT (including only the remaining parts) as one new part 2.

[0077] For example, if the UE selects and reports two STRP measurement hypotheses and one NCJT measurement hypothesis among all STRP and NCJT measurement hypotheses, the CSI report mapping method is as follows: a) Combining the STRP mapping content and the NCJT content described above, for example combining two STRP CSIs and one NCJT CSI into one new CSI report; b) Combining the STRP mapping contents and the NCJT contents described above, for example, combining two STRP part 1s and one NCJT part 1 into one new part 1, combining two STRP part 2s and one NCJT part 2 into one new part 2, c) Combining the STRP mapping contents and the NCJT contents described above, for example, combining two STRP part 1s (including only CRI, RI, and non-zero widebandwidth coefficients) and one NCJT part 1 into one new part 1, and combining two STRP part 2s (including only the remaining parts) and one NCJT part 2 into one new part 2; d) Combining the STRP mapping contents and NCJT contents described above, for example, combining two STRP part 1s (including only RI, non-zero widebandwidth coefficients) and one NCJT part 1 into one new part 1, and combining two STRP part 2s (including only the remaining parts) and one NCJT part 2 into one new part 2; e) Combining the STRP mapping contents and NCJT contents described above, for example, combining two STRP part 1s and one NCJT part 1 (including only CRI, RI, and non-zero widebandwidth coefficients) into one new part 1, and combining two STRP part 2s and one NCJT part 2 (including only the remaining parts) into one new part 2; f) Combining using the above-mentioned STRP mapping contents and NCJT contents, which may include, for example, combining part 1 of two STRPs and part 1 of one NCJT (including only RI, non-zero wide bandwidth coefficients) into one new part 1, and combining part 2 of two STRPs and part 2 of one NCJT (including only the remaining parts) into one new part 2.

[0078] Example 1: When the PMI and CQI granularity is wideband, the mapping contents are as follows: (i) a first CRI, a second CRI, a first RI, a second RI, a third RI, a first LI, a second LI, a third LI, a first PMI, a second PMI, a third PMI, a first CQI, a second CQI, a third CQI; or (ii) including a first CRI, a second CRI, a third CRI, a first RI, a second RI, a third RI, a first LI, a second LI, a third LI, a first PMI, a second PMI, a third PMI, a first CQI, a second CQI, and a third CQI.

[0079] In example 2, when the PMI and CQI granularity is wideband, the CSI report is divided into two parts (part 1 and part 2), and the mapping contents of part 1 and part 2 are as follows:

[0080] (i) Part 1 mapping content includes a first CRI, a first RI, a second RI, a third RI, a first LI, a first PMI, and a first CQI; and Part 2 mapping content includes a second LI, a second PMI, a second CQI, a third CRI, a third LI, a third PMI, and a third CQI; (ii) Part 1 mapping content includes a first CRI, a second CRI, a first RI, a second RI, a third RI, a first LI, a first PMI, and a first CQI; and Part 2 mapping content includes a second LI, a second PMI, a second CQI, a third CRI, a third LI, a third PMI, and a third CQI; (iii) Part 1 mapping content includes a first CRI, a third CRI, a first RI, a second RI, a third RI, a first LI, a third LI, a first PMI, a third PMI, a first CQI, and a third CQI; and Part 2 mapping content includes a second LI, a second PMI, and a second CQI; (iv) Part 1 mapping content includes a first CRI, a second CRI, a third CRI, a first RI, a second RI, a third RI, a first LI, a third LI, a first PMI, a third PMI, a first CQI, and a third CQI, and Part 2 mapping content includes a second LI, a second PMI, and a second CQI.

[0081] For example, when the PMI and CQI granularity is subband, the CSI report is divided into two parts (part1, part2 wideband, and part2 subband), and the mapping contents of Part1 and Part2 are as follows:

[0082] (i) Part1 mapping content includes a first CRI, a first RI, a second RI, a third RI, a first wideband CQI for first TB, a first subband CQI for first TB, a first non-zero wideband bandwidth coefficient, a third non-zero wideband bandwidth coefficient, and a third non-zero wideband bandwidth coefficient; Part2 wideband mapping content includes a first wideband CQI for second TB, a first LI, a first wideband PMI, a second wideband CQI for first TB, a second wideband CQI for second TB, a second LI, a second wideband PMI, a third wideband CQI for first TB, a third wideband CQI for second TB, a third LI, and a third wideband PMI; Part2 subband mapping content includes a first even subband CQI for second TB, a first even subband PMI, a second even subband CQI for first TB, a second even subband CQI for second TB, a second even subband PMI, a PMI, a third even subband CQI for first TB, a third even subband CQI for second TB, a third even subband PMI, a first odd subband CQI for second TB, a first odd subband PMI, a second odd subband CQI for first TB, a second odd subband CQI for second TB, a second odd subband PMI, a third odd subband CQI for first TB, a third odd subband CQI for second TB, and a third odd subband PMI; (ii) the Part1 mapping content includes a first CRI, a second CRI, a first RI, a second RI, a third RI, a first wideband CQI for first TB, a first subband CQI for first TB, a first non-zero wideband bandwidth coefficient, a third non-zero wideband bandwidth coefficient, and a third non-zero wideband bandwidth coefficient; the Part2 wideband mapping content includes a first wideband CQI for second TB, a first LI, a first wideband PMI, a second wideband CQI for first TB, a second wideband CQI for second TB, a second LI, a second wideband PMI, a third wideband CQI for first TB, a third wideband CQI for second TB, a third LI, and a third wideband PMI; and the Part2 subband mapping content includes a first even subband CQI for second TB, a first even subband PMI, a second even subband CQI for first TB, and a second even subband CQI for second TB. TB, a second even subband PMI, a third even subband CQI for first TB, a third even subband CQI for second TB, a third even subband PMI, a first odd subband CQI for second TB, a first odd subband PMI, a second odd subband CQI for first TB, a second odd subband CQI for second TB, a second odd subband PMI, a third odd subband CQI for first TB, a third odd subband CQI for second TB, and a third odd subband PMI; (iii) Part1 mapping content includes a first CRI, a third CRI, a first RI, a second RI, a third RI, a first wideband CQI for first TB, a first subband CQI for first TB, a third wideband CQI for first TB, a third subband CQI for first TB, a first non-zero wideband bandwidth coefficient, a third non-zero wideband bandwidth coefficient, and a third non-zero wideband bandwidth coefficient; Part2 wideband mapping content includes a first wideband CQI for second TB, a first LI, a first wideband PMI, a second wideband CQI for first TB, a second wideband CQI for second TB, a second LI, a second wideband PMI, a third wideband CQI for second TB, a third LI, and a third wideband PMI; Part2 subband mapping content includes a first even subband CQI for second TB, a first even subband PMI, and a second even subband CQI for first TB. TB, a second even subband CQI for second TB, a second even subband PMI, a third even subband CQI for second TB, a third even subband PMI, a first odd subband CQI for second TB, a first odd subband PMI, a second odd subband CQI for first TB, a second odd subband CQI for second TB, a second odd subband PMI, a third odd subband CQI for second TB, and a third odd subband PMI; (iv) Part1 mapping content includes a first CRI, a second CRI, a third CRI, a first RI, a second RI, a third RI, a first wideband CQI for first TB, a first subband CQI for first TB, a third wideband CQI for first TB, a third subband CQI for first TB, a first non-zero wideband bandwidth coefficient, a third non-zero wideband bandwidth coefficient, and a third non-zero wideband bandwidth coefficient; Part2 wideband mapping content includes a first wideband CQI for second TB, a first LI, a first wideband PMI, a second wideband CQI for first TB, a second wideband CQI for second TB, a second LI, a second wideband PMI, a third wideband CQI for second TB, a third LI, and a third wideband PMI; Part2 subband mapping content includes a first even subband CQI for second TB, a first even subband PMI, and a second even subband CQI for first TB. TB, second even subband CQI for second TB, second even subband PMI, 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 second TB and third odd subband PMI.

[0083] In one embodiment of the present application, the method comprises: When the plurality of CSI reports includes a multi-TPR (MTRP) CSI report, the terminal determines one or more of a transmission priority of a CSI report in the plurality of CSI reports and a transmission priority of CSI content in the multi-TPR CSI report; Here, the CSI content in the multi-TPR CSI report includes one or more of CSI content corresponding to a joint transmission measurement hypothesis, CSI content corresponding to a STRP measurement hypothesis, joint transmission measurement hypothesis wideband information, TRP measurement hypothesis wideband information, joint transmission measurement hypothesis subband information, and TRP measurement hypothesis subband information.

[0084] For example, 1) when the PMI and CQI granularity is subband, the priority of part1 is higher than that of part2 wideband, and the priority of part2 wideband is higher than that of part2 subband; 2) When the PMI and CQI granularity is subband, the priority of part1 is greater than part2 wideband, the NCJT measurement hypothesis priority in part2 is greater than the STRP measurement hypothesis priority in part2, and the wideband field priority in part2 is greater than the part2 subband field.

[0085] For example, when one CSI feedback is based on a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH), if a MTRP CSI report is present in the multiple fed back CSI reports, it is necessary to determine the priority among the multiple CSI reports and the priority of the contents included in the MTRP CSI report.

[0086] In one embodiment of the present application, the transmission priority of each CSI report in the plurality of CSI reports is (1) For multiple aperiodic CSI reports based on a PUSCH report, and all of the CSI reports are non-bearer Layer 1 Reference Signal Received Power (L1-RSRP) or Layer 1 Signal to Interference plus Noise Ratio (L1-SINR), the priority of the CSI report of the MTRP is higher than that of the non-MTRP CSI report; (2) For multiple semi-persistent CSI reports based on PUSCH reports, and all of the semi-persistent CSI reports are non-bearer L1-RSRP or L1-SINR, the priority of the CSI report of the MTRP is higher than the CSI report of the non-MTRP; (3) For multiple semi-persistent CSI reports based on PUCCH reports, and all of the semi-persistent CSI reports are non-bearer L1-RSRP or L1-SINR, the priority of the CSI report of the MTRP is higher than the CSI report of the non-MTRP; (4) When multiple periodic CSI reports are based on a PUCCH report and all of them are non-bearer L1-RSRP or L1-SINR, the priority of the MTRP CSI report is higher than that of the non-MTRP CSI report.

[0087] That is, in the case of multiple aperiodic CSI reports based on a PUSCH report / multiple semi-persistent CSI reports based on a PUSCH report / multiple semi-persistent CSI reports based on a PUCCH report / multiple periodic CSI reports based on a PUCCH report, all of which are non-bearer L1-RSRP or L1-SINR, the priority of the CSI report of the MTRP is higher than that of the CSI report of the non-MTRP, or conversely, For example, if the priority of the CSI report of the MTRP is higher than that of the CSI report of the non-MTRP, the corresponding formula is: JPEG0007627996000074.jpg6161, where m=0 indicates that this report carries an MTRP CSI report, and m=1 indicates that this report carries an STRP CSI report.

[0088] In one embodiment of the present application, a transmission priority of the joint transmission measurement hypothesis is higher than a transmission priority of the STRP measurement hypothesis; The transmission priority of the joint transmission measurement hypothesis wideband information and the TRP measurement hypothesis wideband information is higher than the transmission priority of the joint transmission measurement hypothesis subband information and the TRP measurement hypothesis subband information.

[0089] In one embodiment of the present application, if a joint transmission measurement hypothesis reports only one CRI and includes multiple RIs, PMIs, and LIs, the mapping order should match the order of the CRIs or CMRs indicated by the CRIs; a) For example, if CRI0 is defined as CMR1 and CMR2 (a pair of CMRs associated with a 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; b) For example, if CRI0 is defined as CMR1 of CMR1 and CMR2 (a pair of CMRs associated with a 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.

[0090] In an embodiment of the present application, a terminal can report the contents of one or more measurement hypotheses among various measurement hypothesis types to a network side device via a first field in a CSI report, thereby reducing the feedback overhead of the CSI report and better supporting MTRP transmission.

[0091] Referring to FIG. 3 , an embodiment of the present application provides a CSI feedback method, and specific steps include: step 301 .

[0092] Step 301: A network side device receives one or more CSI reports, the CSI reports including a first field corresponding to a first measurement hypothesis; Here, the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a positive integer, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypothesis.

[0093] As can be seen, the description of the first field and the first hypothesis in the embodiment shown in FIG. 3 may be referred to the embodiment shown in FIG. 2 and will not be further described here.

[0094] In one embodiment of the present 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: (1) The number of antenna ports (e.g., one antenna port, two antenna ports, four antenna ports, and more than four antenna ports); (2) A bit width length corresponding to the number of rank indicators allowed by a single TRP transmission; (3) a bit width length corresponding to the number of rank indicators allowed by the joint transmission; and (4) It is determined based on one or more of all rank indicators or the number of rank indicator combinations supported by the terminal.

[0095] In one embodiment of the present application, the bit width of the RI field is one of the following: (1) 0, or JPEG0007627996000075.jpg16161, or JPEG0007627996000076.jpg16161, or JPEG0007627996000077.jpg16161, or JPEG0007627996000078.jpg16161, or a first value including JPEG0007627996000079.jpg16161, For example, when N=2, if two TRPs each have only one antenna port, the bitwidth of the RI field is 0. If one TRP has only one antenna port and another TRP has two antenna ports, the bitwidth is JPEG0007627996000080.jpg13161, one TRP has two antenna ports, and another TRP has two antenna ports, then the bitwidth is JPEG0007627996000081.jpg13161, one TRP has two antenna ports, and another TRP has four antenna ports, then the bitwidth is JPEG0007627996000082.jpg13161, one TRP has four antenna ports, and another TRP has four antenna ports, then the bitwidth is JPEG0007627996000083.jpg13161, and each TRP also has four or more antenna ports, the bitwidth is JPEG0007627996000084.jpg8161, (2) 0 or JPEG0007627996000085.jpg8161, or JPEG0007627996000086.jpg8161, or JPEG0007627996000087.jpg8161, or JPEG0007627996000088.jpg8161, or a second value comprising JPEG0007627996000089.jpg8161, JPEG0007627996000090.jpg7161 represents the number of all supported rank indicator combinations, (3) 0 or a third value including JPEG0007627996000091.jpg7161, JPEG0007627996000092.jpg7161 represents the number of all supported rank indicators or rank indicator combinations, Where: JPEG0007627996000093.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000094.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission; JPEG0007627996000095.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; JPEG0007627996000096.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission, where N is 2 or greater.

[0096] In one embodiment of the present application, when the bit width of the RI field is a first value, if the first measurement hypothesis is a STRP measurement hypothesis, one codepoint in the RI field corresponds to one rank indicator, and if the first measurement hypothesis is a joint transmission measurement hypothesis, the first codepoint in the RI field corresponds to one rank indicator. JPEG0007627996000097.jpg 8161 bits correspond to one rank indicator of the first TRP, JPEG0007627996000098.jpg8161 bit or higher JPEG0007627996000099.jpg 8161 bits correspond to one rank indicator of the Nth TRP or the first JPEG0007627996000100.jpg 8161 bits correspond to one rank indicator of the first TRP and the last JPEG0007627996000101.jpg 8161 bits correspond to one rank indicator of the Nth TRP.

[0097] In one embodiment of the present application, when the bit width of the RI field is a second value, if the first measurement hypothesis is a STRP measurement hypothesis, one code point of the RI field corresponds to one rank indicator, and if the first measurement hypothesis is a joint transmission measurement hypothesis, one code point of the RI field corresponds to a set of rank indicators.

[0098] For example, when reporting a joint transmission measurement hypothesis, as shown in Table 1, if the index value indicated by the RI field is 2, it represents that the set of rank indicators for the JT transmission are 2 and 1.

[0099] In one embodiment of the present 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.

[0100] For example, as shown in Table 2, when the index value indicated by the RI field is 2, it indicates STRP transmission and the rank is 3, and when the index value indicated by the RI field is 10, it indicates JT transmission and the set of rank indicators is 2 and 1. In one embodiment of the present application, when the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of a channel state information reference signal resource indicator (CSI-RS resource indicator, CRI) field in the CSI report is: JPEG0007627996000102.jpg8161, where: JPEG0007627996000103.jpg7161 represents the number of channel measurement resources associated with the reporting configuration, JPEG0007627996000104.jpg7161 represents the number of CMR pairs associated with the reporting configuration.

[0101] Here, one CMR pair is used to measure one joint transmission measurement hypothesis, ie, N may represent the number of joint transmission measurement hypotheses that need to be measured.

[0102] In one embodiment of the present application, the method comprises: When the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the terminal further includes indicating to the network side device via the first field in the CSI report that the type of the first measurement hypothesis is a STRP measurement hypothesis or a joint transmission measurement hypothesis; wherein the first field is one of the following: (1) CRI Field, For example, K s For N=2 and N=1, the CRI field adopts the above-mentioned definition method, where CRI0 represents CMR1, CRI1 represents CMR2, and CRI2 represents CMR1 and CMR2, so that when a user reports CRI2, it represents a joint transmission measurement hypothesis.

[0103] (2) RI Field, The RI field employs the definition method described above.

[0104] Or it can be indicated by a combination of RIs in other ways, e.g. K s = 2 and N = 1, the user reports RI1 = 0 and RI2 = 1, where if only RI2 is a legal value, the user reports the STRP measurement hypothesis, and corresponds to the TRP corresponding to RI2; if the user reports RI1 = 1 and RI2 = 1, where both of them are legal values, the user reports a joint transmission measurement hypothesis; Here, the legal value is determined based on the RI limit, the number of ports, and the combination of RI supported by the joint transmission, (3) Newly defined indicator fields.

[0105] For example, a newly defined indicator field is the Joint Transmission Indicator field (JT Indicator field), s For N=2 and N=1, the CRI field is defined such that CRI0 represents CMR1 and CRI1 represents CMR2, so that if a user reports as CRI0 and a STRP transmission hypothesis, the joint transmission indicator field is 0, and if a user reports as CRI0 and a joint transmission hypothesis, the joint transmission indicator field is 1.

[0106] In one embodiment of the present application, when the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmit measurement hypothesis, the number of RI fields in the CSI report is (1) X+1, where X RI fields correspond to X STRP measurement hypotheses and one RI field corresponds to one joint transmission measurement hypothesis; (2) X+2, where X RI fields correspond to X STRP measurement hypotheses and 2 RI fields correspond to 1 joint transmission measurement hypothesis; (3) one, where one RI field corresponds to X STRP measurement hypotheses and one joint transmission measurement hypothesis; (4) two, where one RI field corresponds to the X STRP measurement hypotheses and one RI field corresponds to one joint transmission measurement hypothesis.

[0107] In one embodiment of the present application, when the number of the RI fields is X+1 or X+2, the mapping order of the joint transmission measurement hypotheses and the STRP measurement hypotheses in the RI fields includes that the joint transmission measurement hypotheses are prioritized over the STRP measurement hypotheses, or that the STRP measurement hypotheses are prioritized over the joint transmission measurement hypotheses.

[0108] In one embodiment of the present application, when the number of the 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: (1) The number of antenna ports (e.g., one antenna port, two antenna ports, four antenna ports, and more than four antenna ports); (2) a bit width length corresponding to the number of rank indicators allowed by the joint transmission; and (3) the number of all rank indicators supported by the terminal; and (4) the number of all rank indicator combinations supported by the terminal.

[0109] The number of all rank indicators supported by the terminal may be understood as the number of rank indicators of joint transmission supported by the terminal. The number of all rank indicator combinations supported by the terminal may be understood as the number of rank indicator combinations of joint transmission supported by the terminal, where support may be understood as allowance.

[0110] In one embodiment of the present application, the bit width of the first RI field is: (1) 0 or JPEG0007627996000105.jpg9161, or JPEG0007627996000106.jpg9161, or JPEG0007627996000107.jpg9161, or JPEG0007627996000108.jpg9161, or a fourth value including JPEG0007627996000109.jpg8161, Where: JPEG0007627996000110.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission; JPEG0007627996000111.jpg8161 is a fourth value representing a bit width length corresponding to the number of rank indicators allowed at the time of the Nth TRP joint transmission; (2) 0 or JPEG0007627996000112.jpg8161, or JPEG0007627996000113.jpg8161, or JPEG0007627996000114.jpg8161, or JPEG0007627996000115.jpg8161, or a fifth value including JPEG0007627996000116.jpg8161, JPEG0007627996000117.jpg7161 is one of the values ​​with a fifth value representing the number of all rank indicator combinations supported.

[0111] In one embodiment of the present application, when the bit width of the first RI field is a fourth value, (1) the first of the first RI fields JPEG0007627996000118.jpg 8161 bits correspond to one rank indicator of the first TRP, JPEG0007627996000119.jpg8161 bit or higher JPEG0007627996000120.jpg 8161 bits correspond to one rank indicator of the Nth TRP; (2) or the first of the first RI field JPEG0007627996000121.jpg 8161 bits correspond to one rank indicator of the first TRP and the last JPEG0007627996000122.jpg 8161 bits correspond to one rank indicator of the second TRP, (3) Or, when the bit width of the first RI field is a fifth value, one code point of the first RI field corresponds to a set of rank indicators; Here, N is 2 or more.

[0112] For example, a set of rank indicators may be as shown in Table 3, where if an NCJT measurement hypothesis is reported, then if the index value indicated by the RI field is 2, then the set of rank indicators for the NCJT transmission are 2 and 1.

[0113] In one embodiment of the present application, when the number of the 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: (1) The number of antenna ports (e.g., one antenna port, two antenna ports, four antenna ports, and more than four antenna ports); (2) A bit width length corresponding to the number of rank indicators allowed by STRP transmission.

[0114] In one embodiment of the present application, the bit width of the second RI field is a sixth value; The sixth value is 0 or JPEG0007627996000123.jpg8161, or JPEG0007627996000124.jpg8161, or JPEG0007627996000125.jpg8161, or JPEG0007627996000126.jpg8161, or Contains JPEG0007627996000127.jpg8161, Where: JPEG0007627996000128.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000129.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; Here, N is 2 or more.

[0115] In one embodiment of the present application, when the number of the RI fields is one, the bit width of the RI field is: (1) The number of antenna ports (e.g., one antenna port, two antenna ports, four antenna ports, and more than four antenna ports); (2) a bit width length corresponding to the number of rank indicators allowed by the STRP transmission; and (3) the number of all rank indicator combinations supported by the terminal; and (4) a bit width length corresponding to the number of rank indicators allowed by the joint transmission.

[0116] The number of all rank indicator combinations supported by the terminal may be understood as the number of rank indicator combinations of single TRP transmission supported by the terminal and / or the number of rank indicator combinations of joint transmission supported, where support may be understood as tolerance.

[0117] In one embodiment of the present application, the bit width of the RI field is: (1) 0 or JPEG0007627996000130.jpg16161, or JPEG0007627996000131.jpg16161, or JPEG0007627996000132.jpg16161, or JPEG0007627996000133.jpg16161, or A seventh value containing JPEG0007627996000134.jpg15161; and (2) 0 or JPEG0007627996000135.jpg9161, or JPEG0007627996000136.jpg8161, or JPEG0007627996000137.jpg8161, or JPEG0007627996000138.jpg8161, or and an eighth value including JPEG0007627996000139.jpg8161, Where: JPEG0007627996000140.jpg7161 represents the number of all supported rank indicator combinations, JPEG0007627996000141.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000142.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission; JPEG0007627996000143.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; JPEG0007627996000144.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission, Here, N is 2 or more.

[0118] In one embodiment of the present application, the method comprises: The method further includes sending higher layer signaling for restricting the first field in the CSI report, where the higher layer signaling has a one-to-one correspondence with a TRP, or the higher layer signaling has a mapping relationship with a CMR or a CMR group.

[0119] For example, the higher layer signaling may be typeI-SinglePanel-ri-Restriction, ri-Restriction, typeII-RI-Restriction, typeII-PortSelectionRI-Restriction, typeII-RI-Restriction-r16, or typeII-PortSelectionRI-Restriction-r16.

[0120] In one embodiment of the present application, the scheme for mapping the STRP measurement hypotheses to the CSI reports comprises: The granularity of a precoding matrix indicator (PMI) and a channel quality indicator (CQI) in the CSI report is wideband, and the mapping content of the STRP measurement hypothesis in the CSI report includes one or more of a CRI, a newly defined indicator, an RI, a layer indicator (LI), a PMI, and a CQI; Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is wideband, and the mapping content of the joint transmission measurement hypotheses in the CSI report includes one or more of one or more CRIs, a newly defined indicator field, one or more RIs, one or more LIs, one or more PMIs, and one or more CQIs; Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is wideband, and the mapping content of the joint transmission measurement hypothesis in the CSI report includes a first part (part1) and a second part (part2); Wherein the first part includes one or more of a CRI, a newly defined indicator, a plurality of RIs, a LI, a PMI, and a CQI, and the second part includes one or more of a LI, a PMI, and a CQI; Or, Wherein, the first part includes one or more of a plurality of CRIs, a plurality of RIs, one LI, one PMI, and one CQI, and the second part includes one or more of one LI, one PMI, and one CQI; Or, Wherein, the first part includes one or more of a CRI, a plurality of RIs, a LI, a PMI, and a CQI, and the second part includes one or more of a LI, a PMI, and a CQ; Alternatively, the method of mapping the STRP measurement hypotheses to the CSI reports may further include: The PMI and CQI granularity in the CSI report is subband, and the mapping content of the STRP measurement hypothesis in the CSI report includes a first part, a second part, and a third part; Here, the first part includes one or more of a CRI, a newly defined indicator, an RI, a wideband channel quality indicator for a first transmission block (wideband CQI for first TB), a subband channel quality indicator for a first transmission block (subband CQI for first TB), and a non-zero wideband coefficient; the second part includes one or more of a wideband channel quality indicator for a second transmission block (wideband CQI for second TB), an LI, and a wideband precoding matrix indicator (wideband PMI); and the third part includes one or more of an even subband channel quality indicator for a second transmission block (even subband CQI for second TB), an even subband precoding matrix indicator (even subband PMI), an odd subband channel quality indicator for a second transmission block (odd subband CQI for second TB), and an odd subband precoding matrix indicator (odd subband PMI); Or, The first part includes one or more of a CRI, an RI, a wideband channel quality indicator for a first transmission block (wideband CQI for first TB), a subband channel quality indicator for a first transmission block (subband CQI for first TB), and a non-zero wideband coefficient, and the second part includes one or more of a wideband channel quality indicator for a second transmission block (wideband CQI for second TB), an LI, and a Widebandthe third part includes one or more of an even subband channel quality indicator (even subband CQI for second TB), an even subband precoding matrix indicator (even subband PMI), an odd subband channel quality indicator (odd subband CQI for second TB) for the second transmission block, and an odd subband precoding matrix indicator (odd subband PMI); Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is subband, and the mapping content of the NCJT measurement hypothesis in the CSI report includes a first part, a second part, and a third part; The first part includes one or more of a CRI, a newly defined indicator, one or more RIs, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and one or more non-zero wideband width coefficients; the second part includes one or more of a wideband channel quality indicator for a second transmission block, one or more LIs, one or more wideband precoding matrix indicators, and one or more wideband channel quality indicators for a plurality of transmission blocks; and the third part includes one or more of an even subband channel quality indicator for a second transmission block, a plurality of even subband precoding matrix indicators, a plurality of even subband channel quality indicators for a plurality of second transmission blocks, a plurality of odd subband channel quality indicators for a plurality of second transmission blocks, a plurality of odd subband precoding matrix indicators, an odd subband channel quality indicator for a first transmission block, and an odd subband channel quality indicator for a second transmission block; Or, the first portion includes one or more of CRIs, one or more RI fields, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and one or more non-zero wideband width coefficients; the second portion includes one or more of a wideband channel quality indicator for a second transmission block, one or more LIs, a plurality of wideband precoding matrix indicators, a wideband channel quality indicator for a first transmission block, and a wideband channel quality indicator for a second transmission block; and the third portion includes one or more of an even subband channel quality indicator for a second transmission block, a plurality of even subband coding matrix indicators, an even subband channel quality indicator for a first transmission block, an even subband channel quality indicator for a second transmission block, an even subband coding matrix indicator, an odd subband channel quality indicator for a second transmission block, a plurality of odd subband coding matrix indicators, and an odd subband channel quality indicator for a plurality of transmission blocks; Or, The first portion includes one or more of a CRI, one or more RIs, a wideband channel quality indicator for the first transmission block, a subband channel quality indicator for the first transmission block, and one or more non-zero wideband width coefficients; the second portion includes one or more of a wideband channel quality indicator for a plurality of second transmission blocks, one or more LIs, one or more wideband precoding matrix indicators, a wideband channel quality indicator for the first transmission block, a wideband channel quality indicator for the second transmission block; and the third portion includes one or more of an even subband channel quality indicator for the second transmission block, one or more even wideband precoding matrix indicators, a subband channel quality indicator for the first transmission block, a subband channel quality indicator for the second transmission block, an odd subband channel quality indicator for a plurality of second transmission blocks, one or more odd wideband precoding matrix indicators, and an odd subband channel quality indicator for the first transmission block.

[0121] In one embodiment of the present application, the CSI report includes: (1) Mapping content of at least some of the joint transmission measurement hypotheses; (2) Mapping content of at least a portion of the STRP measurement hypotheses is included.

[0122] In one embodiment of the present application, the transmission priority of each CSI report in the plurality of CSI reports is (1) For multiple aperiodic CSI reports based on a PUSCH report, and all of the CSI reports are non-bearer Layer 1 Reference Signal Received Power (L1-RSRP) or Layer 1 Signal to Interference plus Noise Ratio (L1-SINR), the priority of the CSI report of the MTRP is higher than that of the non-MTRP CSI report; (2) For multiple semi-persistent CSI reports based on PUSCH reports, and all of the semi-persistent CSI reports are non-bearer L1-RSRP or L1-SINR, the priority of the CSI report of the MTRP is higher than the CSI report of the non-MTRP; (3) For multiple semi-persistent CSI reports based on PUCCH reports, and all of the semi-persistent CSI reports are non-bearer L1-RSRP or L1-SINR, the priority of the CSI report of the MTRP is higher than the CSI report of the non-MTRP; (4) When multiple periodic CSI reports are based on a PUCCH report and all of them are non-bearer L1-RSRP or L1-SINR, the priority of the MTRP CSI report is higher than that of the non-MTRP CSI report.

[0123] That is, in the case of multiple aperiodic CSI reports based on a PUSCH report / multiple semi-persistent CSI reports based on a PUSCH report / multiple semi-persistent CSI reports based on a PUCCH report / multiple periodic CSI reports based on a PUCCH report, all of which are non-bearer L1-RSRP or L1-SINR, the priority of the CSI report of the MTRP is higher than that of the CSI report of the non-MTRP, or conversely, For example, if the priority of the CSI report of the MTRP is higher than that of the CSI report of the non-MTRP, the corresponding formula is: JPEG0007627996000145.jpg6161, where m=0 indicates that this report carries the CSI report of the MTRP, and m=1 indicates that this report carries the CSI report of the STRP.

[0124] In one embodiment of the present application, a transmission priority of the joint transmission measurement hypothesis is higher than a transmission priority of the STRP measurement hypothesis; The transmission priority of the joint transmission measurement hypothesis wideband information and the TRP measurement hypothesis wideband information is higher than the transmission priority of the joint transmission measurement hypothesis subband information and the TRP measurement hypothesis subband information.

[0125] In one embodiment of the present application, if a joint transmission measurement hypothesis reports only one CRI and includes multiple RIs, PMIs, and LIs, the mapping order should match the order of the CRIs or CMRs indicated by the CRIs; a) For example, if CRI0 is defined as CMR1 and CMR2 (a pair of CMRs associated with a 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; b) For example, if CRI0 is defined as CMR1 of CMR1 and CMR2 (a pair of CMRs associated with a 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.

[0126] In an embodiment of the present application, a terminal can report the contents of one or more measurement hypotheses among various measurement hypothesis types to a network side device via a first field in a CSI report, thereby reducing the feedback overhead of the CSI report and better supporting MTRP transmission.

[0127] Hereinafter, embodiments of the present invention will be described by combining Examples 1 to 6.

[0128] Example 1: If the UE is configured by higher layer signaling to select and report an optimal measurement hypothesis and CMR0 and CMR1 are set in the CSI reporting setting, when the UE selects and reports one STRP measurement hypothesis corresponding to CMR0, the UE can notify the base station that this CSI report corresponds to one STRP measurement hypothesis by setting the CRI field of the CSI report to CRI0, and when the UE selects and reports one NCJT measurement hypothesis corresponding to CMR0 and CMR1, the UE can notify the base station that this CSI report corresponds to one NCJT measurement hypothesis by setting the CRI field of the CSI report to CRI2.

[0129] For CRI definitions, see Table 4.

[0130] [Table 4]

[0131] Example 2: If the UE is configured by higher layer signaling to select and report an optimal measurement hypothesis and CMR0 and CMR1 are set in the CSI reporting setting, when the UE selects and reports one STRP measurement hypothesis corresponding to CMR0, the UE can notify the base station that this CSI report corresponds to one STRP measurement hypothesis by setting CRI0 in the CRI field of the CSI report and setting 0 in the NCJT indicator field of the CSI report (adding 1 bit newly), and when the UE selects and reports one NCJT measurement hypothesis corresponding to one CMR0 and CMR2, the UE can notify the base station that this CSI report corresponds to one NCJT measurement hypothesis by setting CRI0 or CRI1 in the CRI field of the CSI report and setting 1 in the NCJT indicator field of the CSI report.

[0132] Example 3: When the UE is configured by higher layer signaling to report two STRP measurement hypotheses and one NCJT measurement hypothesis, and CMR0 and CMR1 are configured in the CSI reporting setting, there are three fields related to RI in the CSI report, and CMR0 corresponding to the first RI field is associated with one STRP measurement hypothesis, CMR1 corresponding to the second RI field is associated with one STRP measurement hypothesis, CMR0 and CMR1 corresponding to the third RI field correspond to one NCJT measurement hypothesis, and the third RI field indicates that one index value corresponds to a set of rank values, as shown in Table 5.

[0133] [Table 5]

[0134] If the indicated index value is 1, the rank indicator value corresponding to CMR0 is 1, and the rank indicator value corresponding to CMR1 is 2.

[0135] Example 4: When the UE is configured by higher layer signaling to report one optimal measurement hypothesis and CMR0 and CMR1 are configured in the CSI reporting setting, there is one field related to the RI of the CSI report. When the UE indicates in another manner that the TRP report content is one STRP CSI corresponding to CMR0, the CMR0 corresponding to this RI field indicator is associated with the value of the rank indicator of one STRP measurement hypothesis. When the UE indicates in another manner that the TRP report content is one NCJT CSI corresponding to CMR0 and CMR1, the RI field indicates a set of rank values, as shown in Table 6.

[0136] [Table 6]

[0137] If the indicated index value is 1, the rank indicator value corresponding to CMR0 is 1, and the rank indicator value corresponding to CMR1 is 2.

[0138] Example 5: If the UE is configured to report one optimal measurement hypothesis by higher layer signaling, and CMR0 and CMR1 are configured in the CSI reporting setting, there is one field related to RI in the CSI report, and the number of STRP transmission ranks that TRP0 corresponding to CMR0 can support is rank 1 / 2 / 3 (2 bits), the number of STRP transmission ranks that TRP1 corresponding to CMR1 can support is rank 2 / 3 (1 bit), and the set of rank indicators that TRP0 and TRP1 corresponding to CMR0 and CMR1 support NCJT transmission are <1,2> ​​and <2,2> (1 bit), then the bitwidth of the RI field corresponding to the CSI report is 2 bits. If the UE selects NCJT transmission hypothesis reporting, the set of rank indicators corresponding to "00" is <1,2>, and the set of rank indicators corresponding to "01" is <2,2>.

[0139] Example 6: When the UE is configured by higher layer signaling to report one optimal STRP measurement hypothesis and one optimal NCJT measurement hypothesis, and CMR0 and CMR1 are configured in the CSI reporting setting, there are two fields related to the RI of the CSI report, where the first RI field corresponds to one STRP measurement hypothesis and the second RI field corresponds to one NCJT measurement hypothesis, and the value of the STRP transmission rank indicator that TRP0 corresponding to CMR0 can support is rank 1 / 2 / 3 (2 bits), and the number of STRP transmission ranks that TRP1 corresponding to CMR1 can support is rank 2 / 3 (1 bit). If a set of rank indicators that TRP0 and TRP1 corresponding to CMR0 and CMR1 support NCJT transmission are <1,2> ​​and <2,2> (1 bit), then the bitwidth of the first RI field corresponding to the CSI report is 2 bits, and the bitwidth of the second RI field corresponding to the CSI report is 1 bit.

[0140] Referring to FIG. 4, an embodiment of the present application provides a CSI feedback device for use in a terminal, the device 400 comprising: A first transmitting module 401 for feeding back one or more CSI reports to a network side device, where a first field in the CSI report represents a first measurement hypothesis; Here, the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a natural number, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypothesis.

[0141] In one embodiment of the present 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: The number of antenna ports, A bit width length corresponding to the number of rank indicators allowed by a single TRP transmission; a bit width length corresponding to the number of rank indicators allowed by the joint transmission; The number of all rank indicators supported by the terminal; and and the number of rank indicator combinations of all rank indicators supported by the terminal.

[0142] The number of all rank indicators supported by the terminal may be understood as the number of rank indicators of a single TRP transmission supported by the terminal and / or the number of rank indicators of a joint transmission supported by the terminal. The number of all rank indicator combinations supported by the terminal may be understood as the number of rank indicator combinations of a single TRP transmission supported by the terminal and / or the number of rank indicator combinations of a joint transmission supported by the terminal. Here, support may be understood as allowance.

[0143] In one embodiment of the present application, the bit width of the RI field is: 0, or JPEG0007627996000149.jpg16161, or JPEG0007627996000150.jpg16161, or JPEG0007627996000151.jpg16161, or JPEG0007627996000152.jpg16161, or A first value containing JPEG0007627996000153.jpg16161; 0 or JPEG0007627996000154.jpg9161, or JPEG0007627996000155.jpg9161, or JPEG0007627996000156.jpg9161, or JPEG0007627996000157.jpg9161, or a second value comprising JPEG0007627996000158.jpg9161, JPEG0007627996000159.jpg7161 is a second value representing the number of all rank indicator combinations supported; 0 or a third value including JPEG0007627996000160.jpg7161, JPEG0007627996000161.jpg7161; and a third value representing the number of all rank indicators or rank indicator combinations supported; Where: JPEG0007627996000162.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000163.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission; JPEG0007627996000164.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; JPEG0007627996000165.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission, where N is 2 or greater.

[0144] In one embodiment of the present application, when the bit width of the RI field is a first value, if the first measurement hypothesis is a STRP measurement hypothesis, one code point of the RI field corresponds to one rank indicator, and if the first measurement hypothesis is a joint transmission measurement hypothesis, the first code point of the RI field corresponds to one rank indicator. JPEG0007627996000166.jpg 8161 bits correspond to one rank indicator of the first TRP, JPEG0007627996000167.jpg8161 bit or higher JPEG0007627996000168.jpg 8161 bits correspond to one rank indicator of the Nth TRP or the first JPEG0007627996000169.jpg 8161 bits correspond to one rank indicator of the first TRP and the last JPEG0007627996000170.jpg 8161 bits correspond to one rank indicator of the Nth TRP, Or, When the bit width of the RI field is a second value, if the first measurement hypothesis is a STRP measurement hypothesis, one code point of the RI field corresponds to one rank indicator, and if the first measurement hypothesis is a joint transmission measurement hypothesis, one code point of the RI field corresponds to a set of rank indicators; Or, 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.

[0145] In one embodiment of the present application, when the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the CRI field in the CSI report is: JPEG0007627996000171.jpg8161, where: JPEG0007627996000172.jpg7161 represents the number of channel measurement resources associated with the reporting configuration, JPEG0007627996000173.jpg7161 represents the number of CMR pairs associated with the reporting configuration.

[0146] In one embodiment of the present application, the device 400 comprises: When the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the terminal further includes a second sending module for indicating to the network side device via the first field in the CSI report that the type of the first measurement hypothesis is a STRP measurement hypothesis or a joint transmission measurement hypothesis; Here, the first field is a CRI field, an RI field, or a newly defined indicator field.

[0147] In one embodiment of the present application, when the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmit measurement hypothesis, the number of RI fields in the CSI report is X+1, where X RI fields correspond to X STRP measurement hypotheses and one RI field corresponds to one joint transmission measurement hypothesis; X+2, where X RI fields correspond to X STRP measurement hypotheses and 2 RI fields correspond to one joint transmission measurement hypothesis; where one RI field corresponds to X STRP measurement hypotheses and one joint transmission measurement hypothesis, Two, where one RI field corresponds to the X STRP measurement hypotheses and one RI field corresponds to one joint transmission measurement hypothesis.

[0148] In one embodiment of the present application, when the number of the RI fields is X+1 or X+2, the mapping order of the joint transmission measurement hypotheses and the STRP measurement hypotheses in the RI fields includes that the joint transmission measurement hypotheses are prioritized over the STRP measurement hypotheses, or that the STRP measurement hypotheses are prioritized over the joint transmission measurement hypotheses.

[0149] In one embodiment of the present application, when the number of the 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: The number of antenna ports, a bit width length corresponding to the number of rank indicators allowed by the joint transmission; The number of all rank indicators supported by the terminal; and and the number of all rank indicator combinations supported by the terminal.

[0150] The number of all rank indicator combinations supported by the terminal may be understood as the number of rank indicator combinations of single TRP transmission supported by the terminal and / or the number of rank indicator combinations of joint transmission supported, where support may be understood as tolerance.

[0151] In one embodiment of the present application, the bit width of the first RI field is: 0 or JPEG0007627996000174.jpg8161, or JPEG0007627996000175.jpg8161, or JPEG0007627996000176.jpg8161, or JPEG0007627996000177.jpg8161, or a fourth value including JPEG0007627996000178.jpg8161, Where: JPEG0007627996000179.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission; JPEG0007627996000180.jpg8161 is a fourth value representing a bit width length corresponding to the number of rank indicators allowed at the time of the Nth TRP joint transmission; 0 or JPEG0007627996000181.jpg8161, or JPEG0007627996000182.jpg8161, or JPEG0007627996000183.jpg8161, or JPEG0007627996000184.jpg8161, or a fifth value including JPEG0007627996000185.jpg8161, JPEG0007627996000186.jpg7161 is one of the values ​​with a fifth value representing the number of all rank indicator combinations supported.

[0152] In one embodiment of the present application, when the bit width of the first RI field is a fourth value, JPEG0007627996000187.jpg 8161 bits correspond to one rank indicator of the first TRP, JPEG0007627996000188.jpg8161 bit or higher JPEG0007627996000189.jpg 8161 bits correspond to one rank indicator of the Nth TRP; Or, The first of the first RI fields JPEG0007627996000190.jpg 8161 bits correspond to one rank indicator of the first TRP and the last JPEG0007627996000191.jpg 8161 bits correspond to one rank indicator of the second TRP, Or, When the bit width of the first RI field is a fifth value, one code point of the first RI field corresponds to a set of rank indicators; Here, N is 2 or more.

[0153] In one embodiment of the present application, when the number of the 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: The number of antenna ports, and a bit width length corresponding to the number of rank indicators allowed by the STRP transmission.

[0154] In one embodiment of the present application, the bit width of the second RI field is a sixth value; The sixth value is 0 or JPEG0007627996000192.jpg8161, or JPEG0007627996000193.jpg8161, or JPEG0007627996000194.jpg8161, or JPEG0007627996000195.jpg8161, or Contains JPEG0007627996000196.jpg8161, Where: JPEG0007627996000197.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000198.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; Here, N is 2 or more.

[0155] In one embodiment of the present application, when the number of the RI fields is one, the bit width of the RI field is: The number of antenna ports, A bit width length corresponding to the number of rank indicators allowed by STRP transmission; the number of all rank indicator combinations supported by the terminal; and and a bit width length corresponding to the number of rank indicators allowed by the joint transmission.

[0156] The number of all rank indicator combinations supported by the terminal may be understood as the number of rank indicator combinations of single TRP transmission supported by the terminal and / or the number of rank indicator combinations of joint transmission supported, where support may be understood as tolerance.

[0157] In one embodiment of the present application, the bit width of the RI field is: 0 or JPEG0007627996000199.jpg16161, or JPEG0007627996000200.jpg16161, or JPEG0007627996000201.jpg16161, or JPEG0007627996000202.jpg16161, or a seventh value containing JPEG0007627996000203.jpg15161; 0 or JPEG0007627996000204.jpg8161, or JPEG0007627996000205.jpg8161, or JPEG0007627996000206.jpg8161, or JPEG0007627996000207.jpg8161, or and an eighth value including JPEG0007627996000208.jpg8161, Where: JPEG0007627996000209.jpg7161 represents the number of all supported rank indicator combinations, JPEG0007627996000210.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000211.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission, JPEG0007627996000212.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; JPEG0007627996000213.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the Nth TRP joint transmission, Here, N is 2 or more.

[0158] In one embodiment of the present application, the device 400 comprises: The CSI report further includes a first receiving module for receiving higher layer signaling for restricting the first field in the CSI report, where the higher layer signaling has a one-to-one correspondence with a TRP, or the higher layer signaling has a mapping relationship with a CMR or a CMR group.

[0159] In one embodiment of the present application, the scheme for mapping the STRP measurement hypotheses to the CSI reports comprises: The PMI and CQI granularity in the CSI report is wideband, and the mapping content of the STRP measurement hypothesis in the CSI report includes one or more of a CRI, a newly defined indicator, an RI, an LI, a PMI, and a CQI; Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is wideband, and the mapping content of the joint transmission measurement hypotheses in the CSI report includes one or more of one or more CRIs, a newly defined indicator field, one or more RIs, one or more LIs, one or more PMIs, and one or more CQIs; Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is wideband, and the mapping content of the joint transmission measurement hypotheses in the CSI report includes a first part and a second part; Wherein the first part includes one or more of a CRI, a newly defined indicator, multiple RIs, one LI, one PMI, and one CQI, and the second part includes one or more of a LI, one PMI, and one CQI; Or, Wherein the first part includes one or more of a plurality of CRIs, a plurality of RIs, one LI, one PMI, and one CQI, and the second part includes one or more of one LI, one PMI, and one CQI; Or, Wherein the first part includes one or more of a CRI, a plurality of RIs, a LI, a PMI, and a CQI, and the second part includes one or more of a LI, a PMI, and a CQI; Alternatively, the method of mapping the STRP measurement hypotheses to the CSI reports may further include: The PMI and CQI granularity in the CSI report is subband, and the mapping content of the STRP measurement hypothesis in the CSI report includes a first part, a second part, and a third part; Wherein, the first part includes one or more of a CRI, a newly defined indicator, an RI, a wideband channel quality indicator of a first transmission block, a subband channel quality indicator of a first transmission block, and a non-zero wideband width coefficient; the second part includes one or more of a wideband channel quality indicator of a second transmission block, an LI, and a wideband precoding matrix indicator; and the third part includes one or more of an even subband channel quality indicator of a second transmission block, an even subband precoding matrix indicator, an odd subband channel quality indicator of a second transmission block, and an odd subband precoding matrix indicator; Or, The first part includes one or more of a CRI, an RI, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and a non-zero wideband width coefficient, and the second part includes one or more of a wideband channel quality indicator for a second transmission block, an LI, and a Wideband the third portion includes one or more of an even subband channel quality indicator for a second transport block, an even subband precoding matrix indicator, an odd subband channel quality indicator for a second transport block, and an odd subband precoding matrix indicator; Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is subband, and the mapping content of the NCJT measurement hypothesis in the CSI report includes a first part, a second part, and a third part; The first part includes one or more of a CRI, a newly defined indicator, one or more RIs, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and one or more non-zero wideband width coefficients; the second part includes one or more of a wideband channel quality indicator for a second transmission block, one or more LIs, one or more wideband precoding matrix indicators, and one or more wideband channel quality indicators for a plurality of transmission blocks; and the third part includes one or more of an even subband channel quality indicator for a second transmission block, a plurality of even subband precoding matrix indicators, a plurality of even subband channel quality indicators for a plurality of second transmission blocks, a plurality of odd subband channel quality indicators for a plurality of second transmission blocks, a plurality of odd subband precoding matrix indicators, an odd subband channel quality indicator for a first transmission block, and an odd subband channel quality indicator for a second transmission block; Or, the first portion includes one or more of CRIs, one or more RI fields, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and one or more non-zero wideband width coefficients; the second portion includes one or more of a wideband channel quality indicator for a second transmission block, one or more LIs, a plurality of wideband precoding matrix indicators, a wideband channel quality indicator for a first transmission block, and a wideband channel quality indicator for a second transmission block; and the third portion includes one or more of an even subband channel quality indicator for a second transmission block, a plurality of even subband coding matrix indicators, an even subband channel quality indicator for a first transmission block, an even subband channel quality indicator for a second transmission block, an even subband coding matrix indicator, an odd subband channel quality indicator for a second transmission block, a plurality of odd subband coding matrix indicators, and an odd subband channel quality indicator for a plurality of transmission blocks; Or, The first portion includes one or more of a CRI, one or more RIs, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and one or more non-zero wideband width coefficients; the second portion includes one or more of a wideband channel quality indicator for a plurality of second transmission blocks, one or more LIs, one or more wideband precoding matrix indicators, a wideband channel quality indicator for a first transmission block, and a wideband channel quality indicator for a second transmission block; and the third portion includes one or more of an even subband channel quality indicator for a second transmission block, one or more even wideband precoding matrix indicators, a subband channel quality indicator for a first transmission block, a subband channel quality indicator for a second transmission block, an odd subband channel quality indicator for a plurality of second transmission blocks, one or more odd wideband precoding matrix indicators, and an odd subband channel quality indicator for a first transmission block.

[0160] In one embodiment of the present application, the CSI report includes: Mapping content of at least some of the joint transmission measurement hypotheses; and one or more of the mapping contents of at least a portion of the STRP measurement hypotheses.

[0161] In one embodiment of the present application, the device comprises: When the plurality of CSI reports includes a multi-TPR CSI report, the terminal further includes a determination module for determining one or more of a transmission priority of a CSI report in the plurality of CSI reports and a transmission priority of CSI content in the multi-TPR CSI report; Here, the CSI content in the multi-TPR CSI report includes one or more of CSI content corresponding to a joint transmission measurement hypothesis, CSI content corresponding to a STRP measurement hypothesis, joint transmission measurement hypothesis wideband information, TRP measurement hypothesis wideband information, joint transmission measurement hypothesis subband information, and TRP measurement hypothesis subband information.

[0162] In one embodiment of the present application, the transmission priority of each CSI report in the plurality of CSI reports is For multiple aperiodic CSI reports based on a PUSCH report and all of the CSI reports are non-bearer L1-RSRP or L1-SINR, the priority of the CSI report of the MTRP is higher than the CSI report of the non-MTRP; For multiple semi-persistent CSI reports based on PUSCH reports, and all of the semi-persistent CSI reports are non-bearer L1-RSRP or L1-SINR, the priority of the CSI report of the MTRP is higher than the CSI report of the non-MTRP; For multiple semi-persistent CSI reports based on PUCCH reports, and all of the semi-persistent CSI reports are non-bearer L1-RSRP or L1-SINR, the priority of the MTRP CSI report is higher than the non-MTRP CSI report; and wherein, when the multiple periodic CSI reports are based on the PUCCH report and are all non-bearer L1-RSRP or L1-SINR, the priority of the MTRP CSI report is higher than the non-MTRP CSI report.

[0163] In one embodiment of the present application, the transmission priority of the CSI content in the multi-TPR CSI report is a transmission priority of the joint transmission measurement hypothesis is higher than a transmission priority of the STRP measurement hypothesis; The transmission priority of the joint transmission measurement hypothesis wideband information and the TRP measurement hypothesis wideband information is higher than the transmission priority of the joint transmission measurement hypothesis subband information and the TRP measurement hypothesis subband information.

[0164] The apparatus according to the embodiment of the present application can realize each process realized by the embodiment of the method shown in FIG. 2 and achieve the same technical effects, and will not be described further here to avoid repetition.

[0165] Referring to FIG. 5, an embodiment of the present application provides a CSI feedback device for use in a network side device, the device 500 comprising: a second receiving module 501 for receiving one or more CSI reports, the CSI reports including a first field corresponding to a first measurement hypothesis; Here, the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a positive integer, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypothesis.

[0166] In one embodiment of the present 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: The number of antenna ports, A bit width length corresponding to the number of rank indicators allowed by a single TRP transmission; a bit width length corresponding to the number of rank indicators allowed by the joint transmission; The number of all rank indicators supported by the terminal; and and the number of all rank indicator combinations supported by the terminal.

[0167] The number of all rank indicators supported by the terminal may be understood as the number of rank indicators of a single TRP transmission supported by the terminal and / or the number of rank indicators of a joint transmission supported by the terminal. The number of all rank indicator combinations supported by the terminal may be understood as the number of rank indicator combinations of a single TRP transmission supported by the terminal and / or the number of rank indicator combinations of a joint transmission supported by the terminal. Here, support may be understood as allowance.

[0168] In one embodiment of the present application, the bit width of the RI field is: 0, or JPEG0007627996000214.jpg16161, or JPEG0007627996000215.jpg16161, or JPEG0007627996000216.jpg16161, or JPEG0007627996000217.jpg16161, or A first value containing JPEG0007627996000218.jpg16161; 0 or JPEG0007627996000219.jpg8161, or JPEG0007627996000220.jpg8161, or JPEG0007627996000221.jpg8161, or JPEG0007627996000222.jpg8161, or a second value comprising JPEG0007627996000223.jpg8161, JPEG0007627996000224.jpg7161 is a second value representing the number of all rank indicator combinations supported; 0 or a third value including JPEG0007627996000225.jpg7161, a third value representing the number of all rank indicators or rank indicator combinations supported; Where: JPEG0007627996000227.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000228.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission; JPEG0007627996000229.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; JPEG0007627996000230.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed during the Nth TRP joint transmission, where N is 2 or greater.

[0169] In one embodiment of the present application, when the bit width of the RI field is a first value, if the first measurement hypothesis is a STRP measurement hypothesis, one code point of the RI field corresponds to one rank indicator, and if the first measurement hypothesis is a joint transmission measurement hypothesis, the first code point of the RI field corresponds to one rank indicator. JPEG0007627996000231.jpg 8161 bits correspond to one rank indicator of the first TRP, JPEG0007627996000232.jpg8161 bit or higher JPEG0007627996000233.jpg 8161 bits correspond to one rank indicator of the Nth TRP or the first JPEG0007627996000234.jpg 8161 bits correspond to one rank indicator of the first TRP and the last JPEG0007627996000235.jpg 8161 bits corresponds to one rank indicator of the Nth TRP, Or, When the bit width of the RI field is a second value, if the first measurement hypothesis is a STRP measurement hypothesis, one code point of the RI field corresponds to one rank indicator, and if the first measurement hypothesis is a joint transmission measurement hypothesis, one code point of the RI field corresponds to a set of rank indicators; Or, 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.

[0170] In one embodiment of the present application, when the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the CRI field in the CSI report is: JPEG0007627996000236.jpg8161, where: JPEG0007627996000237.jpg7161 represents the number of channel measurement resources associated with the reporting configuration, JPEG0007627996000238.jpg7161 represents the number of CMR pairs associated with the reporting configuration.

[0171] In one embodiment of the present application, the device 500 comprises: and a third receiving module for obtaining, when the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, that the type of the first measurement hypothesis is a STRP measurement hypothesis or a joint transmission measurement hypothesis via the first field in the CSI report; Here, the first field is a CRI field, an RI field, or a newly defined indicator field.

[0172] In one embodiment of the present application, when the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmit measurement hypothesis, the number of RI fields in the CSI report is X+1, where X RI fields correspond to X STRP measurement hypotheses and one RI field corresponds to one joint transmission measurement hypothesis; X+2, where X RI fields correspond to X STRP measurement hypotheses and 2 RI fields correspond to one joint transmission measurement hypothesis; where one RI field corresponds to X STRP measurement hypotheses and one joint transmission measurement hypothesis, Two, where one RI field corresponds to the X STRP measurement hypotheses and one RI field corresponds to one joint transmission measurement hypothesis.

[0173] In one embodiment of the present application, when the number of the RI fields is X+1 or X+2, the mapping order of the joint transmission measurement hypotheses and the STRP measurement hypotheses in the RI fields includes that the joint transmission measurement hypotheses are prioritized over the STRP measurement hypotheses, or that the STRP measurement hypotheses are prioritized over the joint transmission measurement hypotheses.

[0174] In one embodiment of the present application, when the number of the 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: The number of antenna ports, a bit width length corresponding to the number of rank indicators allowed by the joint transmission; The number of all rank indicators supported by the terminal; and and the number of all rank indicator combinations supported by the terminal.

[0175] The number of all rank indicators supported by the terminal may be understood as the number of rank indicators of joint transmission supported by the terminal. The number of all rank indicator combinations supported by the terminal may be understood as the number of rank indicator combinations of joint transmission supported by the terminal, where support may be understood as allowance.

[0176] In one embodiment of the present application, the bit width of the first RI field is: 0 or JPEG0007627996000239.jpg8161, or JPEG0007627996000240.jpg8161, or JPEG0007627996000241.jpg8161, or JPEG0007627996000242.jpg8161, or a fourth value including JPEG0007627996000243.jpg8161, Where: JPEG0007627996000244.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission; JPEG0007627996000245.jpg8161 is a fourth value representing a bit width length corresponding to the number of rank indicators allowed at the time of the Nth TRP joint transmission; 0 or JPEG0007627996000246.jpg8161, or JPEG0007627996000247.jpg8161, or JPEG0007627996000248.jpg8161, or JPEG0007627996000249.jpg8161, or a fifth value including JPEG0007627996000250.jpg8161, JPEG0007627996000251.jpg7161 is one of the values ​​with a fifth value representing the number of all rank indicator combinations supported.

[0177] In one embodiment of the present application, when the bit width of the first RI field is a fourth value, JPEG0007627996000252.jpg 8161 bits correspond to one rank indicator of the first TRP, JPEG0007627996000253.jpg8161 bit or higher JPEG0007627996000254.jpg 8161 bits correspond to one rank indicator of the Nth TRP; Or, The first of the first RI fields JPEG0007627996000255.jpg 8161 bits correspond to one rank indicator of the first TRP and the last JPEG0007627996000256.jpg 8161 bits correspond to one rank indicator of the second TRP, Or, When the bit width of the first RI field is a fifth value, one code point of the first RI field corresponds to a set of rank indicators; Here, N is 2 or more.

[0178] In one embodiment of the present application, when the number of the 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: The number of antenna ports, and a bit width length corresponding to the number of rank indicators allowed by the STRP transmission.

[0179] In one embodiment of the present application, the bit width of the second RI field is a sixth value; The sixth value is 0 or JPEG0007627996000257.jpg8161, or JPEG0007627996000258.jpg8161, or JPEG0007627996000259.jpg8161, or JPEG0007627996000260.jpg8161, or Contains JPEG0007627996000261.jpg8161, Where: JPEG0007627996000262.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000263.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; Here, N is 2 or more.

[0180] In one embodiment of the present application, when the number of the RI fields is one, the bit width of the RI field is: The number of antenna ports, A bit width length corresponding to the number of rank indicators allowed by STRP transmission; the number of all rank indicator combinations supported by the terminal; and and a bit width length corresponding to the number of rank indicators allowed by the joint transmission.

[0181] The number of all rank indicator combinations supported by the terminal may be understood as the number of rank indicator combinations of single TRP transmission supported by the terminal and / or the number of rank indicator combinations of joint transmission supported, where support may be understood as tolerance.

[0182] In one embodiment of the present application, the bit width of the RI field is: 0 or JPEG0007627996000264.jpg17161, or JPEG0007627996000265.jpg17161, or JPEG0007627996000266.jpg17161, or JPEG0007627996000267.jpg17161, or A seventh value containing JPEG0007627996000268.jpg15161; and 0 or JPEG0007627996000269.jpg9161, or JPEG0007627996000270.jpg9161, or JPEG0007627996000271.jpg9161, or JPEG0007627996000272.jpg9161, or and an eighth value including JPEG0007627996000273.jpg8161, Where: JPEG0007627996000274.jpg7161 represents the number of all supported rank indicator combinations, JPEG0007627996000275.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the first TRP STRP transmission; JPEG0007627996000276.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the first TRP joint transmission; JPEG0007627996000277.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed by the Nth TRP STRP transmission; JPEG0007627996000278.jpg8161 represents a bit width length corresponding to the number of rank indicators allowed at the time of the Nth TRP joint transmission, Here, N is 2 or more.

[0183] In one embodiment of the present application, the device 500 comprises: The CSI report further includes a second transmitting module for transmitting higher layer signaling for restricting the first field in the CSI report, where the higher layer signaling has a one-to-one correspondence with a TRP, or the higher layer signaling has a mapping relationship with a CMR or a CMR group.

[0184] In one embodiment of the present application, the scheme for mapping the STRP measurement hypotheses to the CSI reports comprises: The PMI and CQI granularity in the CSI report is wideband, and the mapping content of the STRP measurement hypothesis in the CSI report includes one or more of a CRI, a newly defined indicator, an RI, an LI, a PMI, and a CQI; Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is wideband, and the mapping content of the joint transmission measurement hypotheses in the CSI report includes one or more of one or more CRIs, a newly defined indicator field, one or more RIs, one or more LIs, one or more PMIs, and one or more CQIs; Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is wideband, and the mapping content of the joint transmission measurement hypotheses in the CSI report includes a first part and a second part; Wherein the first part includes one or more of a CRI, a newly defined indicator, multiple RIs, one LI, one PMI, and one CQI, and the second part includes one or more of a LI, one PMI, and one CQI; Or, Wherein the first part includes one or more of a plurality of CRIs, a plurality of RIs, one LI, one PMI, and one CQI, and the second part includes one or more of one LI, one PMI, and one CQI; Or, Wherein the first part includes one or more of a CRI, a plurality of RIs, a LI, a PMI, and a CQI, and the second part includes one or more of a LI, a PMI, and a CQI; Alternatively, the method of mapping the STRP measurement hypotheses to the CSI reports may further include: The PMI and CQI granularity in the CSI report is subband, and the mapping content of the STRP measurement hypothesis in the CSI report includes a first part, a second part, and a third part; Wherein, the first part includes one or more of a CRI, a newly defined indicator, an RI, a wideband channel quality indicator of a first transmission block, a subband channel quality indicator of a first transmission block, and a non-zero wideband width coefficient; the second part includes one or more of a wideband channel quality indicator of a second transmission block, an LI, and a wideband precoding matrix indicator; and the third part includes one or more of an even subband channel quality indicator of a second transmission block, an even subband precoding matrix indicator, an odd subband channel quality indicator of a second transmission block, and an odd subband precoding matrix indicator; Or, The first part includes one or more of a CRI, an RI, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and a non-zero wideband width coefficient, and the second part includes one or more of a wideband channel quality indicator for a second transmission block, an LI, and a Wideband the third portion includes one or more of an even subband channel quality indicator for a second transport block, an even subband precoding matrix indicator, an odd subband channel quality indicator for a second transport block, and an odd subband precoding matrix indicator; Alternatively, the scheme for mapping the joint transmission measurement hypotheses to the CSI reports may further comprise: The PMI and CQI granularity in the CSI report is subband, and the mapping content of the NCJT measurement hypothesis in the CSI report includes a first part, a second part, and a third part; The first part includes one or more of a CRI, a newly defined indicator, one or more RIs, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and one or more non-zero wideband width coefficients; the second part includes one or more of a wideband channel quality indicator for a second transmission block, one or more LIs, one or more wideband precoding matrix indicators, and one or more wideband channel quality indicators for a plurality of transmission blocks; and the third part includes one or more of an even subband channel quality indicator for a second transmission block, a plurality of even subband precoding matrix indicators, a plurality of even subband channel quality indicators for a plurality of second transmission blocks, a plurality of odd subband channel quality indicators for a plurality of second transmission blocks, a plurality of odd subband precoding matrix indicators, an odd subband channel quality indicator for a first transmission block, and an odd subband channel quality indicator for a second transmission block; Or, the first portion includes one or more of CRIs, one or more RI fields, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and one or more non-zero wideband width coefficients; the second portion includes one or more of a wideband channel quality indicator for a second transmission block, one or more LIs, a plurality of wideband precoding matrix indicators, a wideband channel quality indicator for a first transmission block, and a wideband channel quality indicator for a second transmission block; and the third portion includes one or more of an even subband channel quality indicator for a second transmission block, a plurality of even subband coding matrix indicators, an even subband channel quality indicator for a first transmission block, an even subband channel quality indicator for a second transmission block, an even subband coding matrix indicator, an odd subband channel quality indicator for a second transmission block, a plurality of odd subband coding matrix indicators, and an odd subband channel quality indicator for a plurality of transmission blocks; Or, The first portion includes one or more of a CRI, one or more RIs, a wideband channel quality indicator for a first transmission block, a subband channel quality indicator for a first transmission block, and one or more non-zero wideband width coefficients; the second portion includes one or more of a wideband channel quality indicator for a plurality of second transmission blocks, one or more LIs, one or more wideband precoding matrix indicators, a wideband channel quality indicator for a first transmission block, and a wideband channel quality indicator for a second transmission block; and the third portion includes one or more of an even subband channel quality indicator for a second transmission block, one or more even wideband precoding matrix indicators, a subband channel quality indicator for a first transmission block, a subband channel quality indicator for a second transmission block, an odd subband channel quality indicator for a plurality of second transmission blocks, one or more odd wideband precoding matrix indicators, and an odd subband channel quality indicator for a first transmission block.

[0185] In one embodiment of the present application, the CSI report includes: Mapping content of at least some of the joint transmission measurement hypotheses; and one or more of the mapping contents of at least a portion of the STRP measurement hypotheses.

[0186] In one embodiment of the present application, the transmission priority of each CSI report in the plurality of CSI reports is For multiple aperiodic CSI reports based on a PUSCH report and all of the CSI reports are non-bearer L1-RSRP or L1-SINR, the priority of the CSI report of the MTRP is higher than the CSI report of the non-MTRP; For multiple semi-persistent CSI reports based on PUSCH reports, and all of the semi-persistent CSI reports are non-bearer L1-RSRP or L1-SINR, the priority of the CSI report of the MTRP is higher than the CSI report of the non-MTRP; For multiple semi-persistent CSI reports based on PUCCH reports, and all of the semi-persistent CSI reports are non-bearer L1-RSRP or L1-SINR, the priority of the MTRP CSI report is higher than the non-MTRP CSI report; and wherein, when the multiple periodic CSI reports are based on the PUCCH report and are all non-bearer L1-RSRP or L1-SINR, the priority of the MTRP CSI report is higher than the non-MTRP CSI report.

[0187] In one embodiment of the present application, the transmission priority of the CSI content in the multi-TPR CSI report is a transmission priority of the joint transmission measurement hypothesis is higher than a transmission priority of the STRP measurement hypothesis; The transmission priority of the joint transmission measurement hypothesis wideband information and the TRP measurement hypothesis wideband information is higher than the transmission priority of the joint transmission measurement hypothesis subband information and the TRP measurement hypothesis subband information.

[0188] The transmission device in the embodiments of the present application may be a device, a device or electronic device having an operating system, a component in a network side device, an integrated circuit, or a chip. The device or electronic device may be a base station or other network side device.

[0189] The apparatus according to the embodiments of the present application can realize each process realized by the method embodiment shown in FIG. 3 and achieve the same technical effects, and will not be further described here to avoid repetition.

[0190] An embodiment of the present application further provides a terminal, including a processor and a communication interface, the communication interface is used for feeding back one or more CSI reports to a network side device, and a first field in the CSI report represents a first measurement hypothesis, where the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a natural number, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypotheses. This embodiment of the terminal corresponds to the embodiment of the above terminal side method, and each implementation process and realization manner of the above method embodiment can be applied to the embodiment of the terminal, and the same technical effects can be achieved. Specifically, FIG. 6 is a schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application, in which the terminal 600 includes at least some components such as, but not limited to, a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, and a processor 610.

[0191] As can be understood by those skilled in the art, the terminal 600 may further include a power source (e.g., a battery) for powering each component, and the power source may be logically connected to the processor 610 by a power management system, so that the power management system can realize functions such as charge / discharge management and power consumption management. The terminal structure shown in Figure 6 does not constitute a limitation on the terminal, and the terminal may include more or less components than the number of components shown, or a combination of some components, or a different arrangement of components, and will not be further described here.

[0192] It should be understood that in the embodiment of the present application, the input unit 604 may include a graphics processor (Graphics Processing Unit, GPU) 6041 and a microphone 6042, and the graphics processor 6041 processes image data of still or video images obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. 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 two parts: a touch detection device and a touch controller. The other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, and an operation lever, which will not be further described here.

[0193] In the embodiment of the present application, the radio frequency unit 601 receives downlink data from the network side device, and then causes the processor 610 to process the data, and transmits uplink data to the network side device. In general, 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.

[0194] The memory 609 may be used to store software programs or instructions and various data. The memory 609 may mainly include a program or instruction storage area and a data storage area, where the program or instruction storage area can store an operating system, an application program or instruction required for at least one function (e.g., a sound playback function, an image playback function, etc.), etc. The memory 609 may include a high-speed random access memory or a non-volatile memory, where the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, the memory 609 may be at least one magnetic disk memory device, a flash memory device, or other non-volatile solid-state memory device.

[0195] The processor 610 may include one or more processing units. Optionally, the processor 610 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, and application programs or instructions, and the modem processor mainly processes wireless communication, such as a baseband processor. As can be understood, the modem processor does not have to be integrated into the processor 610.

[0196] The terminal according to the embodiment of the present application can realize each process realized by the embodiment of the method shown in FIG. 2 and achieve the same technical effect, and will not be further described here to avoid repetition of description.

[0197] An embodiment of the present application further provides a network side device, comprising: a processor; and a communication interface, wherein the communication interface is adapted to receive one or more CSI reports, the CSI reports including a first field corresponding to a first measurement hypothesis; Wherein, the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a positive integer, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypothesis. This embodiment of the network side equipment corresponds to the embodiment of the above-mentioned network side equipment method, and each implementation process and realization manner of the above-mentioned method embodiment can be applied to this embodiment of the network side equipment, and the same technical effects can be achieved.

[0198] Specifically, an embodiment of the present application further provides a network side device. As shown in Fig. 7, the network side device 700 includes an antenna 701, a radio frequency device 702, and a baseband device 703. The antenna 701 and the radio frequency device 702 are connected. In the uplink direction, the radio frequency 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 transmits it to the radio frequency device 702, and the radio frequency device 702 processes the received information and then sends it out through the antenna 701.

[0199] The above frequency band processing device may be located in a baseband device 703, and the method performed by the network side equipment in the above embodiments may be implemented in the baseband device 703, which includes a processor 704 and a memory 705.

[0200] The baseband device 703 may, for example, include at least one baseband board, on which multiple chips are installed, and as shown in FIG. 7, one of the chips is, for example, a processor 704, which is connected to a memory 705, and which calls the program in the memory 705 to perform the network device operations shown in the above method embodiments.

[0201] The baseband device 703 may further include a network interface 706, which is used to exchange information with the radio frequency device 702, and which is, for example, a Common Public Radio Interface (abbreviated as CPRI).

[0202] Specifically, the network side equipment of the embodiment of the present application further includes instructions or programs stored in memory 705 and capable of running on processor 704, and processor 704 can call the instructions or programs in memory 705 to execute the method performed by each module shown in FIG. 5 and achieve the same technical effect, which will not be described further here in order to avoid repetition.

[0203] An embodiment of the present application further provides a computer program / program product, the computer program / program product being stored in a non-volatile storage medium, and the computer program / program product being executed by at least one processor to realize the steps of the processing method described in FIG. 2 or FIG. 3.

[0204] The embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, each process of the method embodiment shown in Fig. 2 or Fig. 3 can be realized and the same technical effect can be achieved. In order to avoid repetition, no further description will be given here.

[0205] Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0206] The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run a program or instruction to realize each process of the method embodiment shown in the above Figure 3 or Figure 4, and can achieve the same technical effect. In order to avoid repetition, no further description will be given here.

[0207] It should be understood that the chips referred to in the embodiments of the present application may be referred to as system level chips, system chips, chip systems, or systems on chips.

[0208] The embodiments of the present application provide an electronic device, which is configured to perform the processes of the above-mentioned method embodiments, and can achieve the same technical effects. In order to avoid repetition, they will not be described further here.

[0209] It should be explained that in this specification, the terms "comprise", "include", or any other variants thereof are intended to cover the non-exclusive "comprise", whereby a process, method, article, or apparatus that includes a set of elements includes not only those elements, but also other elements not expressly listed or inherent to such process, method, article, or apparatus. In the absence of further limitations, an element limited by the phrase "comprises a" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes this element. It should be pointed out that the scope of the method and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions in an essentially simultaneous manner or in reverse order based on the functions involved, for example, the described method can be performed in a different order than described, and various steps can be added, omitted, or combined. Also, features described with reference to some examples can be combined in other examples.

[0210] From the above description of the embodiments, it is clear to those skilled in the art that the methods of the above embodiments can be realized in the form of software and a necessary general-purpose hardware platform. Of course, they can also be realized in hardware, but in many cases the former is a more preferred embodiment. Based on this understanding, the technical proposal of the present application may be substantially or the part that contributes to the prior art may be embodied in the form of a computer software product, which is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes some instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the embodiments of the present application.

[0211] The above describes the embodiments of the present application in conjunction with the drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not limiting. Those skilled in the art can take the suggestions of this application and make many forms without departing from the spirit and scope of the claims of this application, all of which belong to the protection scope of this application.

Claims

1. A channel state information (CSI) feedback method, comprising: The terminal feeds back one or more CSI reports to the network side device, the CSI report including a rank indicator RI field and a channel state information reference signal resource indicator CRI field corresponding to a first measurement hypothesis; Wherein the first measurement hypothesis includes X single transmitting / receiving point STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a natural number, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypothesis; If the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the RI field is a third value, the third value being 0 or Including, represents the number of all supported rank indicators or rank indicator combinations, and the terminal indicates to the network side device via the CRI field in the CSI report that the type of the first measurement hypothesis is a STRP measurement hypothesis or a joint transmission measurement hypothesis, where if the type of the first measurement hypothesis is a STRP measurement hypothesis, one code point of the RI field corresponds to one rank indicator, and if the type of the first measurement hypothesis is a joint transmission measurement hypothesis, one code point of the RI field corresponds to a set of rank indicators; A channel state information CSI feedback method, wherein when the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, the number of RI fields in the CSI report is X+1, where X RI fields correspond to X STRP measurement hypotheses and one RI field corresponds to one joint transmission measurement hypothesis.

2. When the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the RI field is The number of antenna ports, The number of all rank indicators supported by the terminal; and and a number of all rank indicator combinations supported by the terminal.

3. When the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the CRI field is where: represents the number of channel measurement resources associated with the reporting configuration, The method of claim 1 , wherein R represents a number of channel measurement resource CMR pairs associated with a reporting configuration.

4. The method of claim 1, wherein when the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, and the number of RI fields is X+1, a mapping order of the joint transmission measurement hypotheses and the STRP measurement hypotheses in the RI fields includes that the joint transmission measurement hypothesis is given priority over the STRP measurement hypothesis.

5. When the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, and the number of the 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 The number of antenna ports, and a number of all rank indicator combinations supported by the terminal.

6. The bit width of the first RI field is a fifth value, and the fifth value is 0 or Including, The method of claim 5 , wherein x represents the number of all supported rank indicator combinations.

7. When the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, the number of the RI fields is X+1, and X=1, a second RI field corresponds to one STRP measurement hypothesis, and a bit width of the second RI field is The number of antenna ports, and a bit width length corresponding to a number of rank indicators allowed by the STRP transmission.

8. The method of mapping the joint transmission measurement hypotheses to the CSI reports, comprising: The method of claim 1, wherein the PMI and CQI granularity in the CSI report is wideband, and the mapping content of the joint transmission measurement hypotheses in the CSI report includes one CRI, one RI, multiple LIs, multiple PMIs, and one CQI.

9. The CSI report states: The method of claim 8 , further comprising mapping content of at least some of the joint transmission measurement hypotheses.

10. The CSI feedback method includes: When the plurality of CSI reports includes a multi-TRP CSI report, the terminal determines a transmission priority of CSI content in the multi-TRP CSI report; Wherein, the CSI content in the multi-TRP CSI report includes one or more of CSI content corresponding to a joint transmission measurement hypothesis, CSI content corresponding to a STRP measurement hypothesis; The transmission priority of the CSI content in the CSI report of the multi-TRP is: The method of claim 1 , comprising a transmission priority of the joint transmission measurement hypothesis being higher than a transmission priority of the STRP measurement hypothesis.

11. A terminal comprising a processor, a memory and a program stored in said memory and operable to run on said processor, said program implementing the steps of the method according to any one of claims 1 to 10 when executed by said processor.

12. A method and apparatus for receiving one or more CSI reports from a network side device, comprising: a processor; a memory; and a program stored in the memory and operable on the processor, the program being executed by the processor to realize a network side device receiving one or more CSI reports; wherein the CSI report includes an RI field and a CRI field corresponding to a first measurement hypothesis, the first measurement hypothesis including X STRP measurement hypotheses and one joint transmission measurement hypothesis, where X is a positive integer, or the first measurement hypothesis is one of all the STRP measurement hypotheses and the joint transmission measurement hypothesis; If the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the RI field is a third value, the third value being 0 or Including, represents the number of all supported rank indicators or rank indicator combinations, and the CRI field in the CSI report is for indicating to the network side device that the type of the first measurement hypothesis is a STRP measurement hypothesis or a joint transmission measurement hypothesis, where if the type of the first measurement hypothesis is a STRP measurement hypothesis, one code point in the RI field corresponds to one rank indicator, and if the type of the first measurement hypothesis is a joint transmission measurement hypothesis, one code point in the RI field corresponds to a set of rank indicators; When the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, the number of RI fields in the CSI report is X+1, where X RI fields correspond to X STRP measurement hypotheses and one RI field corresponds to one joint transmission measurement hypothesis.

13. When the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the RI field is: The number of antenna ports, The number of all rank indicators supported by the device; The network side equipment according to claim 12, wherein the rank indicator combination is determined based on one or more of: and the number of all rank indicator combinations supported by the terminal.

14. When the first measurement hypothesis is one of all STRP measurement hypotheses and joint transmission measurement hypotheses, the bit width of the CRI field is: where: represents the number of channel measurement resources associated with the reporting configuration, The network side equipment according to claim 12 , wherein m represents a number of channel measurement resource CMR pairs associated with a reporting configuration.

15. A network side device as described in claim 12, wherein when the first measurement hypothesis includes X STRP measurement hypotheses and one joint transmission measurement hypothesis, and the number of the RI fields is X+1, a mapping order of the joint transmission measurement hypotheses and the STRP measurement hypotheses in the RI fields includes that the joint transmission measurement hypothesis is given priority over the STRP measurement hypothesis.

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