CSI reporting methods, terminal, network device and storage medium

Abstract

Provided in the embodiments of the present disclosure are channel state information (CSI) reporting methods, a terminal, a network device and a storage medium. A CSI reporting method comprises: receiving configuration information sent by a network device, where the configuration information comprises at least a first quantity M of CSI-RS resources used for CSI reporting; on the basis of the configuration information and priorities of CSI corresponding to the M CSI-RS resources, discarding a portion of CSI corresponding to the M CSI-RS resources; and reporting to the network device the remaining CSI corresponding to the M CSI-RS resources. The method of the present disclosure not only can effectively report CSI when uplink transmission resources are limited, but also can ensure the integrity of CSI corresponding to at least some of CSI-RS resources, thereby ensuring system performance.

Description

CSI reporting method, terminal, network device and storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a CSI reporting method, a terminal, a network device and a storage medium. BACKGROUND

[0002] In channel state information (CSI) reporting, a network device can configure a terminal with CSI reporting quantity that needs to be reported. In a scenario of increasing the number of antenna ports, the number of users accessing the network is larger, and accordingly, the network needs the terminal to feed back more CSI. For a terminal, one CSI reporting needs to store CSI corresponding to different CSI reference signal (CSI-RS) resources.

[0003] SUMMARY

[0004] When uplink transmission resources are insufficient, the terminal can discard part of the CSI. In the related art discarding method, part of the CSI corresponding to each CSI-RS resource is discarded, so that the CSI corresponding to each CSI-RS resource is incomplete, which affects the system performance.

[0005] Embodiments of the present disclosure provide a CSI reporting method, a terminal, a network device and a storage medium.

[0006] In a first aspect, embodiments of the present disclosure provide a CSI reporting method, executed by a terminal, and the method comprises:

[0007] receiving configuration information sent by a network device, the configuration information at least comprising a first number M of CSI-RS resources used for channel state information (CSI) reporting;

[0008] discarding part of CSI corresponding to M CSI-RS resources according to the configuration information and CSI priorities of the M CSI-RS resources;

[0009] reporting remaining CSI corresponding to the M CSI-RS resources to the network device.

[0010] In a second aspect, embodiments of the present disclosure provide a CSI reporting method, executed by a network device, and the method comprises:

[0011] sending configuration information to a terminal, the configuration information at least comprising a first number M of CSI-RS resources used for channel state information (CSI) reporting;

[0012] The terminal reports remaining CSI corresponding to the M CSI-RS resource to the network device, wherein the remaining CSI corresponding to the M CSI-RS resource is obtained by discarding part of CSI corresponding to the M CSI-RS resource according to the configuration information and CSI priorities of the M CSI-RS resource.

[0013] In a third aspect, an embodiment of the present disclosure provides a terminal, comprising:

[0014] The transceiver is configured to receive configuration information sent by the network device, wherein the configuration information at least comprises a first number M of CSI-RS resources used for reporting channel state information (CSI).

[0015] The processing module is configured to discard part of CSI corresponding to the M CSI-RS resource according to the configuration information and CSI priorities of the M CSI-RS resource.

[0016] The transceiver is further configured to report remaining CSI corresponding to the M CSI-RS resource to the network device.

[0017] In a fourth aspect, an embodiment of the present disclosure provides a network device, comprising:

[0018] The transceiver is configured to send configuration information to the terminal, wherein the configuration information at least comprises a first number M of CSI-RS resources used for reporting channel state information (CSI).

[0019] The transceiver is further configured to receive remaining CSI corresponding to the M CSI-RS resource, wherein the remaining CSI corresponding to the M CSI-RS resource is obtained by discarding part of CSI corresponding to the M CSI-RS resource according to the configuration information and CSI priorities of the M CSI-RS resource.

[0020] In a fifth aspect, an embodiment of the present disclosure provides a communication device, comprising:

[0021] One or more processors;

[0022] The communication device is configured to implement the method of the first aspect or the second aspect.

[0023] In a sixth aspect, an embodiment of the present disclosure provides a communication system, comprising a terminal and a network device, wherein:

[0024] The terminal is configured to implement the method of the first aspect;

[0025] The network device is configured to implement the method of the second aspect.

[0026] In a seventh aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, and the instructions comprise the method of the first aspect or the second aspect.

[0027] When the instructions are run on the communication device, the communication device is caused to perform the method of the first aspect, or the second aspect.

[0028] In an eighth aspect, the embodiments of the present disclosure provide a program product, wherein,

[0029] When the program product is executed by the communication device, the communication device is caused to perform the method of the first aspect, or the second aspect.

[0030] In the embodiments of the present disclosure, the terminal learns the number of CSI-RS resources configured by the network device for CSI reporting based on the configuration information, and in the CSI reporting process, the terminal can report according to the CSI priority corresponding to each CSI-RS resource, and discard the CSI corresponding to the CSI-RS resource with low priority, so as to effectively report the CSI when the uplink transmission resource is limited, and also guarantee the integrity of the CSI corresponding to at least part of the CSI-RS resources, and guarantee the system performance. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following describes the drawings required for the embodiments, and the following drawings are only some embodiments of the present disclosure, and do not specifically limit the protection scope of the present disclosure.

[0032] FIG. 1 is one exemplary schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0033] FIG. 2 is one exemplary interactive schematic diagram of a method according to an embodiment of the present disclosure;

[0034] FIGS. 3a and 3b are one exemplary flowchart of a method according to an embodiment of the present disclosure;

[0035] FIG. 4 is one exemplary flowchart of a method according to an embodiment of the present disclosure;

[0036] FIG. 5a is a structural schematic diagram of a device according to an embodiment of the present disclosure;

[0037] FIG. 5b is a structural schematic diagram of a device according to an embodiment of the present disclosure;

[0038] FIG. 6a is a schematic diagram of a communication device according to an embodiment of the present disclosure;

[0039] FIG. 6b is a schematic diagram of a communication device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] The embodiments of the present disclosure provide a CSI reporting method, a terminal, a network device, and a storage medium.

[0041] In a first aspect, the embodiments of the present disclosure provide a CSI reporting method, executed by a terminal, comprising:

[0042] receiving configuration information sent by a network device, the configuration information comprising at least a first number M of CSI-RS resources configured for CSI reporting;

[0043] discarding part of CSI corresponding to the M CSI-RS resources according to the configuration information and CSI priorities corresponding to the M CSI-RS resources;

[0044] reporting remaining CSI corresponding to the M CSI-RS resources to the network device.

[0045] In the above embodiments, the terminal learns the number of CSI-RS resources configured by the network device for CSI reporting based on the configuration information. In the CSI reporting process, the terminal can report according to the CSI priorities corresponding to the CSI-RS resources, and discard the CSI corresponding to the CSI-RS resources with low priorities, so as to effectively report CSI when the uplink transmission resource is limited, and also to ensure the integrity of the CSI corresponding to at least part of the CSI-RS resources and the system performance.

[0046] In combination with the embodiments of the first aspect, in some embodiments, the CSI corresponding to the M CSI-RS resources comprises a first part Part1 and a second part Part2, wherein the CSI corresponding to Part2 is preferentially discarded when the uplink transmission resource is limited.

[0047] In the above embodiments, the terminal can preferentially discard the content in Part2 to retain the content in Part1 with higher priorities.

[0048] In combination with the embodiments of the first aspect, in some embodiments, Part1 comprises a wideband (WB) channel quality indicator (CQI) and a subband (SB) CQI of a first TB corresponding to x CSI-RS resources in Part1, 0≤x≤M.

[0049] Part2 comprises M CSIs corresponding to the M CSI-RS resources.

[0050] In the above embodiments, based on the value of x, the content in Part1 can be appropriately reduced, so as to reduce the information length of Part1 and improve the accuracy of decoding of Part1.

[0051] In combination with the embodiments of the first aspect, in some embodiments, the parameter M is not configured in the configuration information Rand x=0, the CSI corresponding to each CSI-RS resource in Part 2 includes the following groups:

[0052] The first group includes a wideband CQI of a first transmission block (TB), or includes a wideband CQI and a subband CQI of the first TB;

[0053] The second group includes even subband CQI of the first TB;

[0054] The third group includes odd subband CQI of the first TB.

[0055] In the above embodiment, a possible grouping or mapping storage manner in Part 2 is illustrated, which is beneficial to ensure effective reporting of relevant wideband or subband information of the first TB.

[0056] In combination with the embodiment of the first aspect, in some embodiments, the CSI corresponding to each CSI-RS resource in Part 2 includes the following groups:

[0057] The first group includes wideband information or Group 0 of a precoding matrix indication (PMI);

[0058] The second group includes even subband CSI information or Group 1 of the PMI;

[0059] The third group includes odd subband CSI information or Group 2 of the PMI.

[0060] In the above embodiment, another possible grouping or mapping storage manner in Part 2 is illustrated, and the contents of the corresponding groups in the above embodiment can be combined, for example, the first group content in the above embodiment is combined with the first group content in the above embodiment to form the first group content, the second group content is combined with the second group content in the above embodiment to form the second group content, and so on, so that the terminal can discard or report CSI according to the grouping content of Part 2.

[0061] In combination with the embodiment of the first aspect, in some embodiments, the configuration information does not configure the parameter M R and x=N, N>0; or the configuration information configures the parameter M R and M R >0.

[0062] In the above embodiment, conditions that can apply the above grouping or mapping manner are illustrated.

[0063] In combination with the embodiment of the first aspect, in some embodiments, the configuration information does not configure the parameter MR and x = N, N > 0, Part1 includes the wideband channel quality indicator CQI and subband CQI of the first TB corresponding to N CSI-RS resource pairs.

[0064] In the above embodiment, if x is not 0, Part1 can be used to carry the information related to the first TB. Part1 carries important information while still ensuring to reduce the carrying of other content and reduce the information content of Part1.

[0065] In combination with the embodiments of the first aspect, in some embodiments, the method further includes:

[0066] determining N CSI-RS resources from the M CSI-RS resources according to a first rule.

[0067] In the above embodiment, the terminal can select the related CSI-RS resources that need to carry CSI information in Part1 based on a certain rule.

[0068] In combination with the embodiments of the first aspect, in some embodiments, the first rule satisfies at least one of the following:

[0069] The first rule is defined by a protocol or configured by a network device;

[0070] The first rule is: selecting N CSI-RS resources from the M CSI-RS resources according to the index or identification order of the CSI-RS resources;

[0071] The first rule is: selecting N CSI-RS resources from the M CSI-RS resources according to a defined or configured metric value.

[0072] In the above embodiment, the terminal can select N CSI-RS resources according to different first rules, improving flexibility.

[0073] In combination with the embodiments of the first aspect, in some embodiments, the parameter M is configured in the configuration information R and M R > 0, in Part1 and / or Part2, the priority of the CSI corresponding to the M R CSI-RS resources is higher than the priority of the CSI corresponding to (M-M R ) CSI-RS resources.

[0074] In the above embodiment, the priority determination method of the CSI corresponding to different CSI-RS resources in the scenario where M R is configured is illustrated.

[0075] In combination with the embodiments of the first aspect, in some embodiments, x = M R .

[0076] In some embodiments of the first aspect, the priority of the CSI corresponding to each CSI-RS resource satisfies:

[0077] CSI priority of the 1st group > CSI priority of the 2nd group > CSI priority of the 3rd group.

[0078] In the above embodiments, for the CSI corresponding to each CSI-RS resource, the content of the group with low priority can be discarded preferentially when discarding, so as to ensure system performance.

[0079] In some embodiments of the first aspect, the parameter M is not configured in the configuration information R and x = 0, Part2 includes:

[0080] The 0th group, the 0th group includes the wideband CQI of the first TB, or includes the wideband CQI and the subband CQI of the first TB;

[0081] In Part2, the CSI corresponding to each CSI-RS resource includes the following groups:

[0082] The 1st group, the 1st group includes the wideband information or PMI of Group 0;

[0083] The 2nd group, the 2nd group includes the even subband CSI information or PMI of Group 1;

[0084] The 3rd group, the 3rd group includes the odd subband CSI information or PMI of Group 2.

[0085] In the above embodiments, another possible grouping or mapping manner of Part2 is illustrated, and important information can be grouped separately.

[0086] In some embodiments of the first aspect, the priority of the CSI corresponding to each CSI-RS resource satisfies:

[0087] CSI priority of the 0th group > CSI priority of the 1st group > CSI priority of the 2nd group > CSI priority of the 3rd group.

[0088] In the above embodiments, important information with high priority can be ensured not to be discarded, so as to ensure system performance.

[0089] In some embodiments of the first aspect, Part2 includes the following groups:

[0090] The 1st group, the 1st group includes the wideband CQI and / or wideband information corresponding to M CSI-RS resources, or the 1st group includes Group 0;

[0091] The second group includes even subband CQI and / or even subband CSI information corresponding to the M CSI-RS resources, or the second group includes Group 1.

[0092] The third group includes odd subband CQI and / or odd subband CSI information corresponding to the M CSI-RS resources, or the third group includes Group 2.

[0093] In the configuration information, the parameter M is not configured R and x = 0, or the parameter M is not configured in the configuration information R and x = N, N > 0, or the parameter M is configured in the configuration information R and M R > 0.

[0094] In the above embodiments, the above grouping or mapping manner can also be used for different conditions.

[0095] In combination with the embodiments of the first aspect, in some embodiments, when the parameter M R and M R > 0, the CSI priority of each group in Part 2 satisfies:

[0096] In the first group, the second group, or the third group, the CSI priority of the M R CSI-RS resources is higher than the CSI priority of the (M-M R ) CSI-RS resources.

[0097] In the above embodiments, based on the CSI priority corresponding to different resources, the terminal can preferentially discard the CSI corresponding to the CSI-RS resource with low priority.

[0098] In combination with the embodiments of the first aspect, in some embodiments, the CSI priority of each group in Part 2 is determined according to a second rule, wherein the second rule is the same as or different from the first rule.

[0099] In the above embodiments, the terminal can determine the priority of the related group based on the related rule.

[0100] In combination with the embodiments of the first aspect, in some embodiments, the method further includes:

[0101] Determining the priority of the CSI corresponding to the M CSI-RS resources according to a second rule, wherein the second rule is the same as or different from the first rule.

[0102] In the above embodiments, the terminal can determine the priority of the related group based on the CSI corresponding to the related CSI-RS resource.

[0103] In some embodiments, the second rule satisfies at least one of the following:

[0104] The second rule is to determine the CSI priority corresponding to the M CSI-RS resources according to a defined or configured metric value.

[0105] The second rule is to determine the CSI priority corresponding to the M CSI-RS resources in the order of the index or identifier of the CSI-RS resource.

[0106] The second rule is defined by a protocol or configured by the network device.

[0107] The second rule is to determine the CSI priority corresponding to the M CSI-RS resources according to the order of the indication of each CSI-RS resource in Part 1.

[0108] In the above embodiments, the terminal can determine the priority corresponding to different resources based on multiple rules, thereby improving the flexibility in the CSI reporting and discarding process.

[0109] In some embodiments, the metric value is at least one of the following:

[0110] The CQI of the CSI-RS resource;

[0111] The signal to interference plus noise ratio (SINR) of the CSI-RS resource;

[0112] The rank indication (RI) of the CSI-RS resource;

[0113] The PMI of the CSI-RS resource.

[0114] In the above embodiments, the terminal can determine the priority of the CSI corresponding to different groups or different CSI-RS resources according to different metric values, thereby retaining the CSI with better metric values and improving system performance.

[0115] In a second aspect, the embodiments of the present disclosure provide a CSI reporting method, executed by a network device, comprising:

[0116] Sending configuration information to the terminal, the configuration information at least including a first number M of CSI-RS resources for channel state information (CSI) reporting;

[0117] reporting, by the terminal, remaining CSI corresponding to M CSI-RS resource pairs, wherein the remaining CSI corresponding to the M CSI-RS resource pairs is obtained by the terminal discarding part of CSI corresponding to the M CSI-RS resource pairs according to configuration information and CSI priorities of the M CSI-RS resource pairs.

[0118] In combination with the embodiments of the second aspect, in some embodiments, the CSI corresponding to the M CSI-RS resource pairs includes a first part Part1 and a second part Part2, wherein the CSI corresponding to Part2 is preferentially discarded when the uplink transmission resource is limited.

[0119] In combination with the embodiments of the second aspect, in some embodiments, Part1 includes wideband channel quality indication (CQI) and subband CQI of a first transport block (TB) corresponding to x CSI-RS resource pairs, 0≤x≤M.

[0120] Part2 includes M CSI corresponding to M CSI-RS resource pairs.

[0121] In combination with the embodiments of the second aspect, in some embodiments, the parameter M is not configured in the configuration information. R When x=0, the CSI corresponding to each CSI-RS resource pair in Part2 includes the following groups:

[0122] Group 1, which includes wideband CQI of a first transport block (TB), or includes wideband CQI and subband CQI of the first TB;

[0123] Group 2, which includes even subband CQI of the first TB;

[0124] Group 3, which includes odd subband CQI of the first TB.

[0125] In combination with the embodiments of the second aspect, in some embodiments, the CSI corresponding to each CSI-RS resource pair in Part2 includes the following groups:

[0126] Group 1, which includes wideband information or PMI of Group 0;

[0127] Group 2, which includes even subband CSI information or PMI of Group 1;

[0128] Group 3, which includes odd subband CSI information or PMI of Group 2.

[0129] In combination with the embodiments of the second aspect, in some embodiments, the parameter M is not configured in the configuration information. R When x=N, N>0; or the parameter M is configured in the configuration information. R and MR >0.

[0130] In conjunction with the embodiments of the second aspect, in some embodiments, parameter M is not configured in the configuration information. R When x = N and N > 0, Part 1 includes the broadband channel quality indicator (CQI) and subband CQI of the first TB corresponding to N CSI-RS resources.

[0131] In conjunction with the embodiments of the second aspect, in some embodiments, N CSI-RS resources are determined from M CSI-RS resources according to the first rule.

[0132] In conjunction with the embodiments of the second aspect, in some embodiments, the first rule satisfies at least one of the following:

[0133] The first rule is defined by the protocol or configured by the network device;

[0134] The first rule is: select N CSI-RS resources from M CSI-RS resources according to the index or identifier order of the CSI-RS resources;

[0135] The first rule is: select N CSI-RS resources from M CSI-RS resources based on the defined or configured metrics.

[0136] In conjunction with the embodiments of the second aspect, in some embodiments, parameter M is configured in the configuration information. R And M R When M > 0, in Part 1 and / or Part 2, R The priority of the CSI corresponding to each CSI-RS resource is greater than (M - M). R The priority of the CSI corresponding to each CSI-RS resource.

[0137] In conjunction with the embodiments of the second aspect, in some embodiments, x = M R .

[0138] In conjunction with the embodiments of the second aspect, in some embodiments, the priority of the CSI corresponding to each CSI-RS resource satisfies:

[0139] CSI priority of Group 1 > CSI priority of Group 2 > CSI priority of Group 3.

[0140] In conjunction with the embodiments of the second aspect, in some embodiments, parameter M is not configured in the configuration information. R And when x = 0, Part 2 includes:

[0141] Group 0, Group 0 includes the first TB of broadband CQI, or includes the first TB of broadband CQI and subband CQI;

[0142] In Part2, the CSI corresponding to each CSI-RS resource includes the following groups:

[0143] The first group includes wideband information or PMI of Group 0;

[0144] The second group includes even subband CSI information or PMI of Group 1;

[0145] The third group includes odd subband CSI information or PMI of Group 2.

[0146] In combination with the embodiments of the second aspect, in some embodiments, the priority of the CSI corresponding to each CSI-RS resource satisfies:

[0147] The priority of the CSI of the 0th group > the priority of the CSI of the 1st group > the priority of the CSI of the 2nd group > the priority of the CSI of the 3rd group.

[0148] In combination with the embodiments of the second aspect, in some embodiments, Part2 includes the following groups:

[0149] The first group includes wideband CQI and / or wideband information corresponding to M CSI-RS resources, or the first group includes Group 0;

[0150] The second group includes even subband CQI and / or even subband CSI information corresponding to M CSI-RS resources, or the second group includes Group 1;

[0151] The third group includes odd subband CQI and / or odd subband CSI information corresponding to M CSI-RS resources, or the third group includes Group 2;

[0152] Wherein, the parameter M is not configured in the configuration information R and x = 0, or the parameter M is not configured in the configuration information R and x = N, N > 0, or the parameter M is configured in the configuration information R and M R ≥ 0.

[0153] In combination with the embodiments of the second aspect, in some embodiments, when the parameter M R and M R > 0 is configured, the priority of the CSI of each group in Part2 satisfies:

[0154] In the first group, the second group or the third group, the priority of the CSI corresponding to M R CSI-RS resources is greater than the priority of the CSI corresponding to (M-M Ra CSI priority corresponding to the M CSI-RS resource.

[0155] In some embodiments, the CSI priority of each group in Part 2 is determined according to a second rule, which is the same as or different from the first rule.

[0156] In some embodiments, the priority of the CSI reporting corresponding to the M CSI-RS resources is determined according to a second rule, which is the same as or different from the first rule.

[0157] In some embodiments of the second aspect, the second rule satisfies at least one of the following:

[0158] The second rule is to determine the CSI priority corresponding to the M CSI-RS resources according to a defined or configured metric value.

[0159] The second rule is to determine the CSI priority corresponding to the M CSI-RS resources in the order of the index or identifier of the CSI-RS resource.

[0160] The second rule is defined by a protocol or configured by a network device.

[0161] The second rule is to determine the CSI priority corresponding to the M CSI-RS resources according to the order of the indication of each CSI-RS resource in Part 1.

[0162] In some embodiments of the second aspect, the metric value is at least one of the following:

[0163] CQI of the CSI-RS resource;

[0164] Signal-to-noise and interference ratio (SINR) of the CSI-RS resource;

[0165] Rank indication (RI) of the CSI-RS resource;

[0166] PMI of the CSI-RS resource.

[0167] In a third aspect, the embodiments of the present disclosure provide a terminal, comprising:

[0168] A transceiver module is configured to receive configuration information sent by a network device, the configuration information at least including a first number M of CSI-RS resources for channel state information (CSI) reporting.

[0169] A processing module is configured to discard part of the CSI corresponding to the M CSI-RS resources according to the configuration information and the CSI priority corresponding to the M CSI-RS resources.

[0170] The transceiver module is further configured to report, to the network device, remaining CSI corresponding to the M CSI-RS resources.

[0171] In a fourth aspect, the embodiments of the present disclosure provide a network device, comprising:

[0172] a transceiver module, configured to send configuration information to a terminal, the configuration information comprising at least a first number M of CSI-RS resources used for CSI reporting;

[0173] The transceiver module is further configured to receive remaining CSI corresponding to the M CSI-RS resources, wherein the remaining CSI corresponding to the M CSI-RS resources is obtained by discarding part of CSI corresponding to the M CSI-RS resources according to the configuration information and CSI priorities corresponding to the M CSI-RS resources.

[0174] In a fifth aspect, the embodiments of the present disclosure provide a communication device, comprising:

[0175] one or more processors;

[0176] The communication device is configured to implement the method of the first aspect or the second aspect.

[0177] In a sixth aspect, the embodiments of the present disclosure provide a communication system, comprising a terminal and a network device, wherein:

[0178] The terminal is configured to implement the method of the first aspect;

[0179] The network device is configured to implement the method of the second aspect.

[0180] In a seventh aspect, the embodiments of the present disclosure provide a storage medium, which stores instructions, wherein:

[0181] When the instructions run on the communication device, the communication device is caused to perform the method of the first aspect or the second aspect.

[0182] In an eighth aspect, the embodiments of the present disclosure provide a program product, wherein:

[0183] When the program product is executed by the communication device, the communication device is caused to perform the method of the first aspect or the second aspect.

[0184] In a ninth aspect, the embodiments of the present disclosure provide a computer program, which, when running on a computer, causes the computer to perform the method described in the optional implementation manners of the first aspect and the second aspect.

[0185] In a tenth aspect, the embodiments of the present disclosure provide a chip or a chip system. The chip or the chip system comprises processing circuitry configured to perform the method described in the above-mentioned first aspect and the second aspect.

[0186] It can be understood that the terminal, storage medium, program product, computer program, chip or chip system described above are used to execute the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects achieved thereby can refer to the beneficial effects in the corresponding method, which will not be described here again.

[0187] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation manners in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, the steps of different embodiments can be combined arbitrarily, an embodiment can be combined with the optional implementation manners of other embodiments.

[0188] In each embodiment of the present disclosure, the terms and / or descriptions of the embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0189] The terms used in the embodiments of the present disclosure are only for the purpose of describing the specific embodiments, and not as a limitation on the present disclosure.

[0190] In the embodiments of the present disclosure, unless otherwise specified and logically contradictory, the elements expressed in singular form, such as "one", "a", "the", "above", "said", "preceding", "this" and the like, can represent "one and only one", or "one or more", "at least one" and the like. For example, in the case of using articles such as "a", "an", "the" and the like in English, the noun after the article can be understood as singular expression, or can be understood as plural expression.

[0191] In the embodiments of the present disclosure, "a plurality of" means two or more.

[0192] In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple" and the like can be replaced with each other.

[0193] In some embodiments, "at least one of A, B", "A and / or B", "in one case A, in another case B", "responsive to case A, responsive to case B" and the like, can be interpreted to include both cases, A and B, in some embodiments, A (A is performed regardless of B), in some embodiments, B (B is performed regardless of A), in some embodiments, selected from the group consisting of A and B (the selection between A and B is an option), in some embodiments, A and B (both A and B are performed).

[0194] In some embodiments, "A or B" and the like, can be interpreted to include both cases, A and B, in some embodiments, A (A is performed regardless of B), in some embodiments, B (B is performed regardless of A), in some embodiments, selected from the group consisting of A and B (the selection between A and B is an option).

[0195] In some embodiments, the prefix words "first", "second" and the like in the disclosure do not limit the position, order, priority, number or content of the described objects, and the description of the described objects should be understood in the context of the claims or embodiments, and should not be construed as redundant limitations. For example, the described object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified by them are in the same message or not, nor do they limit the order of "first field" and "second field". For another example, the described object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the number of described objects is not limited by ordinal words, and can be one or more. For example, "first device", where the number of "devices" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the described object is "device", and "first device" and "second device" can be the same device or different devices, and their types can be the same or different; for another example, the described object is "information", and "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

[0196] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0197] In some embodiments, the terms "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0198] In some embodiments, the terms "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", "above", and the like can be replaced with each other, and the terms "less than", "less than or equal to", "not greater than", "fewer than", "fewer than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below", and the like can be replaced with each other.

[0199] In some embodiments, the apparatuses and devices can be interpreted as physical or virtual, and their names are not limited to the names described in the embodiments, and in some cases can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", and the like.

[0200] In some embodiments, "network" can be interpreted as an apparatus included in the network, such as an access network device, a core network device, and the like.

[0201] In some embodiments, an “access network device (AN device)” can also be referred to as a “radio access network device (RAN device),” a “base station (BS),” a “radio base station,” a “fixed station,” and in some embodiments can also be understood as a “node,” an “access point,” a “transmission point (TP),” a “reception point (RP),” a “transmission / reception point (TRP),” a “panel,” an “antenna panel,” an “antenna array,” a “cell,” a “macro cell,” a “small cell,” a “femto cell,” a “pico cell,” a “sector,” a “cell group,” a “serving cell,” a “carrier,” a “component carrier,” a “bandwidth part (BWP),” and the like.

[0202] In some embodiments, a "terminal" or "terminal device" can be referred to as a "user equipment" (UE), a "user terminal," a "mobile station" (MS), a "mobile terminal" (MT), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, and / or the like.

[0203] In some embodiments, data, information, and / or the like can be obtained in compliance with laws and regulations of a country in which data is obtained.

[0204] In some embodiments, data, information, and / or the like can be obtained after obtaining consent of a user.

[0205] In addition, each element, each row, or each column in a table of embodiments of the present disclosure can be implemented as an independent embodiment, and a combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0206] FIG. 1 is an architecture diagram of a communication system according to an embodiment of the present disclosure.

[0207] As shown in FIG. 1, the communication system 100 includes a terminal 101 and a network device 102. The terminal 101 can be a UE, and the network device 102 can be a base station gNB.

[0208] In some embodiments, the terminal 101 includes at least one of a mobile phone, a wearable device, an Internet of Things device, a communication-capable automobile, a smart automobile, a tablet (Pad), a wireless transceiver-equipped computer, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, and the like, but is not limited thereto.

[0209] In some embodiments, the network device 102 can include at least one of an access network device and a core network device.

[0210] In some embodiments, the access network device is at least one of a node or a device that accesses a terminal to a wireless network, for example, and can include at least one of an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open RAN, a Cloud RAN, a base station in other communication systems, an access node in a wireless fidelity (WiFi) system, and the like, but is not limited thereto.

[0211] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0212] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, with part of the protocol layer functions being controlled by the CU, and the remaining part or all of the protocol layer functions being distributed in the DU and controlled by the CU. However, the present disclosure is not limited thereto.

[0213] In some embodiments, the core network device can be one device including one or more network elements, or can be multiple devices or device groups including all or part of one or more network elements. The network element can be virtual or physical. The core network includes at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next-generation core (NGC), for example. Alternatively, the core network device refers to a network element with specific functions, such as an access management function (AMF) and a service management function (SMF).

[0214] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art can know that, as the system architecture evolves and new business scenarios appear, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0215] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1 or part of the subject, but are not limited thereto.

[0216] The subjects shown in FIG. 1 are examples. The communication system can include all or part of the subjects in FIG. 1, or other subjects other than those in FIG. 1. The number and form of each subject is arbitrary. The connection relationship between the subjects is an example. The subjects can be connected or not connected. The connection can be in any manner, can be direct connection or indirect connection, and can be wired connection or wireless connection.

[0217] Embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication processing methods, next-generation system expanded based on them, and the like. Further, a plurality of systems can be applied in combination (for example, combination of LTE or LTE-A and 5G, and the like).

[0218] For CSI reporting, the gNB can configure the UE with the CSI reporting quantities that need to be reported through signaling. Among them, the CSI reporting quantities at least contain one or more of the following: CSI-RS Resource Indication (CRI), Layer Indicator (LI), Rank Indication (RI), Channel Quality Indicator (CQI) and / or Precoding Matrix Indication (PMI).

[0219] In the conventional CSI feedback based on Type I or Type II codebook, the CSI reporting quantities can be divided into Part 1 and Part 2.

[0220] For example, the CSI reporting based on Rel-15 Type I single panel codebook includes two parts of Part 1 and Part 2. Among them, Part 1 at least contains one or more of the following information: RI, CRI and CQI of the first codeword; Part 2 at least contains one or more of the following information: PMI, LI and CQI of the second codeword. The PMI therein can include two kinds of information: wideband feedback information i1 and subband feedback information i2. When the uplink transmission resource is not enough, part of the information in Part 2 needs to be discarded. The information in Part 2 can be divided into three groups, such as the first group, the second group and the third group.

[0221] For another example, the CSI reporting based on Rel-16 enhanced eType II codebook includes two parts of Part 1 and Part 2. Among them, Part 1 at least contains one or more of the following information: RI, CQI and Number Non-zero Coefficient (NNZC) indication information of all layers; Part 2 contains PMI information, which can be divided into three groups such as Group 0, Group 1 and Group 2.

[0222] To further improve system efficiency or enhance coverage, the antenna scale can be expanded by increasing the number of antenna ports. For example, 64 or 128 CSI-RS ports need to be supported to implement channel measurement on 64 or 128 antenna ports. Due to the larger number of ports, the number of users accessing the network is also larger, and accordingly, the network needs the terminal to feed back more CSI for multi-user scheduling to improve system performance. Among them, the acquisition of CRI, LI, RI, CQI or PMI in each CSI reporting quantity is calculated based on independent CSI-RS resources, and the corresponding CSI-RS resources are indicated by CRI. The CSI measured by the UE based on the resource indicated by CRI can be reported by the traditional Rel-15 Type I single-panel codebook or Rel-16 eType II codebook.

[0223] According to the above content, reporting CSI based on the Rel-15 Type I single-panel codebook or the Rel-16 eType II codebook is divided into Part 1 and Part 2. When CRI>1, multiple resource corresponding Part 1 and Part 2 contents need to be reported, and if these CSI contents are reported through one CSI, accordingly, multiple different CSI-RS resource corresponding CSI need to be stored in one CSI report. When partial CSI is discarded, different discard methods and storage methods will affect the system performance. How to store these CSI contents and still guarantee a certain system performance when discarding part of the CSI is a problem to be solved.

[0224] In one possible way, whether the network configures the parameter M R and reports the CSI corresponding to M CSI-RS resources, Part 1 and Part 2 contain the CSI corresponding to each resource and the mapping order, which can be referred to as follows:

[0225] (1) When M R is not configured, the mapping order of each CSI in Part 1 is defined: for M-CRI reporting of up to 128 CSI-RS ports, if M R channel measurement resource (CMR) is not supported, the following mapping order can be considered:

[0226] Mapping order 1-1: 1 st CRI->2 nd CRI->……->M th CRI->1 st RI->2 nd RI->……->M thRI->1 st WB CQI for TB 1->2 nd WB CQI for TB 1->……->M th WB CQI for TB 1->1 st SB CQI for TB 1->2 nd SB CQI for TB 1->……->M th SB CQI for TB 1->K NZ,0 ->K NZ,1 ->…->K NZ,M-1 ; where NZ denotes non-zero coefficients. Where the first information or first indication information in the order is located in the most significant bit or the least significant bit.

[0227] Mapping order 1-2: 1 st CRI->1 st RI->1 st WB CQI for TB 1->1 st SB CQI for TB 1->K NZ,0 ->2 nd CRI->2 nd RI->2 nd WB CQI for TB 1->2 nd SB CQI for TB 1->K NZ,1 ……->M th CRI->M th RI->M th WB CQI for TB 1->M th SB CQI for TB 1->K NZ,M-1 . Where the first information or first indication information in the order is located in the most significant bit or the least significant bit.

[0228] (2) Configuration of M R CSI mapping order definition in Part 1: Regarding M-CRI reporting for up to 128 CSI-RS ports, if M R CMRs are pre-configured, the following mapping orders can be considered:

[0229] Mapping order 2-1: 1 st CRI->2 nd CRI->……->(M-M R ) th CRI->1 st RI->2 nd RI->……->M th RI->1st WB CQI for TB 1->2 nd WB CQI is used for TB 1->……->M th WB CQI for TB 1->1 st SB CQI for TB 1->2 nd SB CQI is used for TB 1->……->M th SB CQI for TB 1->K NZ,0 ->K NZ,1 ->……->K NZ,M-1 The first indication information is located in the highest or lowest bit.

[0230] Mapping order 2-2:1 st RI->1 st WB CQI for TB 1->1 st SB CQI for TB 1->K NZ,0 ->2 nd RI->2 nd WB CQI for TB 1->2 nd SB CQI for TB 1->K NZ,1 ->……->(MM R +1) th CRI->(MM R +1) th RI->(MM R +1) th WB CQI is used for TB 1->(MM) R +1) th SB CQI for TB 1->K NZ,(M-MR+1) ……->M th CRI->M th RI->M th WB CQI is used for TB 1->M th SB CQI for TB 1->K NZ,M-1 The first indication information is located in the highest or lowest bit.

[0231] (3) Discarding method for CSI reports based on Rel-15 Type I codebook Part 2: For M-CRI reports with up to 128 CSI-RS ports, the following discarding priority can be considered in CSI Part II based on Type I codebook:

[0232] Omission 1-1: Part II WB for M CRIs -> Part II even SB for 1st CRI -> … Part II even SB for M st CRI -> Part II odd SB for 1st CRI -> … Part II odd SB for M th CRI -> Part II even SB for 1st CRI -> … Part II even SB for M st CRI -> Part II odd SB for 1st CRI -> … Part II odd SB for M th CRI; where the first indication information is located in the most significant bit or the least significant bit.

[0233] Omission 1-2: Part II WB for M CRIs -> Part II even SB for 1st CRI -> … Part II even SB for M th CRI -> Part II odd SB for 1st CRI -> … Part II odd SB for M st CRI -> Part II even SB for 1st CRI -> … Part II even SB for M th CRI -> Part II odd SB for 1st CRI -> … Part II odd SB for M st CRI; where the first indication information is located in the most significant bit or the least significant bit.

[0234] (4) Dropping method for CSI reporting Part 2 based on Rel-16 eType II codebook: For M-CRI reporting up to 128 CSI-RS ports, the following dropping priority can be used in CSI part II based on Type II codebook:

[0235] Omission 2-1:

[0236] Priority 0: Group 0 corresponds to 1 st CRI, Group 0 corresponds to 2 nd CRI, …, Group 0 corresponds to M st CRI;

[0237] Priority 1: Group 1 corresponds to 1 st CRI; …

[0238] Priority M: Group 1 corresponds to M th CRI;

[0239] Priority M+1: Group 2 corresponds to 1st CRI; …

[0240] Priority 2M: Group 2 corresponds to M th CRI;

[0241] Omission 2-2:

[0242] Priority 0: Group 0 corresponds to 1 st CRI, Group 0 corresponds to 2 nd CRI, …, Group 0 corresponds to M st CRI;

[0243] Priority 1: Group 1 corresponds to 1 st CRI;

[0244] Priority 2: Group 2 corresponds to 1 st CRI;…

[0245] Priority 2M-1: Group 1 corresponds to M th CRI;

[0246] Priority 2M: Group 2 corresponds to M th CRI.

[0247] In the above possible ways, there are two problems: one is that the CSI of M resources is included in Part 1, which may cause the increase of the information length in Part 1, affecting the accuracy of Part 1 decoding. Two, when CSI is discarded, the definition of the discard priority in the above way may cause the CSI corresponding to each resource to be incomplete, that is, there is a part of the CSI corresponding to each resource is discarded.

[0248] FIG. 2 is an interaction diagram of a CSI reporting method according to an embodiment of the present disclosure. As shown in FIG. 2, the present disclosure relates to a CSI reporting method, and the method comprises:

[0249] In step S2101, the network device 102 sends configuration information to the terminal 101.

[0250] In some embodiments, the configuration information at least includes a first number M of CSI-RS resources for CSI reporting.

[0251] In some embodiments, the configuration information includes the first number M and a second number Ks of CSI-RS resources for downlink channel measurement, wherein M≤Ks.

[0252] In some embodiments, the configuration information can further include the CSI reporting quantity. For example, the configuration information is used to configure the CSI reporting quantity to include one or more of the following: CRI, LI, RI, CQI, and PMI.

[0253] In some embodiments, when CRI>, M> 0, i.e., the network device 102 can configure the terminal 101 to report CSI corresponding to multiple CSI-RS resource pairs.

[0254] In some embodiments, the terminal 101 receives the above configuration information, and can learn the related configuration of CSI reporting based on the configuration information.

[0255] Step S2102, the terminal 101 determines the CSI priority corresponding to the M CSI-RS resources.

[0256] In some embodiments, the CSI priority corresponding to the M CSI-RS resources, i.e., the priority between the CSIs corresponding to the M CSI-RS resources, or in other words, the priority of the CSI reporting corresponding to the M CSI-RS resources.

[0257] Among them, the CSI priority corresponding to the M CSI-RS resources includes: the CSI priority corresponding to each CSI-RS resource in the M CSI-RS resources. For example, the terminal 101 determines the CSI priority of the CSI corresponding to each CSI-RS resource for the M CSIs corresponding to the M CSI-RS resources involved in the CSI reporting, so as to determine the CSI priority order of the M CSIs, which facilitates the reference of the priority for CSI discarding when performing step S2103.

[0258] In some embodiments, the higher the CSI priority, the more priority CSI reporting needs to be performed; the lower the CSI priority, the more priority discarding, for example, when the uplink transmission resource is limited or insufficient in step S2103, the CSI corresponding to the CSI-RS resource with low CSI priority is preferentially discarded.

[0259] It can be understood that the terminal 101 can report through uplink control information (Uplink Control Information, UCI) when reporting CSI, such as the CSI corresponding to the M CSI-RS resources being mapped into the UCI, so the CSI can also be referred to as UCI, UCI parameter, UCI parameter information, UCI information content, etc. The present embodiment does not limit this.

[0260] In some embodiments, the CSI corresponding to the M CSI-RS resources includes: a first part Part1 and a second part Part2, wherein the CSI corresponding to Part2 is preferentially discarded when the uplink transmission resource is limited.

[0261] In the process of sending the CSI corresponding to the M CSI-RS resources through one CSI report, the CSI corresponding to the M CSI-RS resources can be divided into two parts. Part 1 can also be referred to as Part I, and Part 2 can also be referred to as Part II.

[0262] In some embodiments, different CSI priorities are also involved in the CSI corresponding to each of the M CSI-RS resources in the CSI corresponding to the M CSI-RS resources, for example, Part 2 can be divided into multiple groups in different grouping manners, and details are described in the following embodiments.

[0263] In some embodiments, the terminal 101 can perform the step S2102 according to the first rule or the second rule, wherein the second rule is the same as or different from the first rule. Taking the second rule as an example, the terminal 101 can determine the CSI priorities of the M CSI-RS resources according to the second rule.

[0264] In some embodiments, the second rule satisfies at least one of the following:

[0265] The second rule is to determine the CSI priorities of the M CSI-RS resources according to a defined or configured metric value;

[0266] The second rule is to determine the CSI priorities of the M CSI-RS resources according to the order of the indexes or identities of the CSI-RS resources;

[0267] The second rule is defined by a protocol or configured by a network device;

[0268] The second rule is to determine the CSI priorities of the M CSI-RS resources according to the order of the indications of the CSI-RS resources in Part 1.

[0269] Optionally, the terminal 101 can determine the CSI priorities of the M CSI-RS resources according to any of the above second rules, such as the CSI priority order of the M CSIs corresponding to the M CSI-RS resources.

[0270] Optionally, the metric value is at least one of the following: CQI of the CSI-RS resource; signal-to-noise ratio SINR of the CSI-RS resource; rank indication RI of the CSI-RS resource; PMI of the CSI-RS resource.

[0271] Wherein, the CSI priorities of the M CSI-RS resources or the CSI priority order of the M CSI-RS resources can be determined based on any one or more of the above metric values. For example:

[0272] In an example, taking CQI as an example of the metric value, CSI with larger CQI has higher priority. In the CSIs corresponding to the M CSI-RS resources, assuming that the CQI corresponding to the first CSI-RS resource is larger than the CQI corresponding to the second CSI-RS resource, the CSI corresponding to the first CSI-RS resource has higher priority than the CSI corresponding to the second CSI-RS resource, and in step S2103 when discarding is involved, the CSI corresponding to the second CSI-RS resource can be preferentially discarded.

[0273] Optionally, the order of the index or the identification ID is associated with the CSI priority order. For example, as the index or the ID increases in order, the CSI priority decreases in order. Alternatively, as the index or the ID increases in order, the CSI priority increases in order.

[0274] In an example, assuming that the index of the first CSI-RS resource is ID1 and the index of the second CSI-RS resource is ID2, the CSI corresponding to the first CSI-RS resource has higher priority than the CSI corresponding to the second CSI-RS resource, and in step S2103 when discarding is involved, the CSI corresponding to the second CSI-RS resource can be preferentially discarded.

[0275] Optionally, the CSI priority of the M CSI-RS resources can also be determined according to the mapping order of the CSI-RS resource indication CRI in part 1.

[0276] Optionally, the terminal 101 can be instructed by the network device 102 to use which second rule.

[0277] In step S2103, the terminal 101 discards part of the CSIs corresponding to the M CSI-RS resources according to the configuration information and the CSI priority of the M CSI-RS resources.

[0278] In which, the terminal 101 can perform CSI discarding when the uplink transmission resource is limited, such as discarding part of the CSIs corresponding to the M CSI-RS resources according to the configuration information and the CSI priority of the M CSI-RS resources when the uplink transmission resource is limited.

[0279] In some embodiments, the terminal 101 can learn the value of M based on the configuration information. The CSI reporting amount can also be learned.

[0280] In some embodiments, when the second rule is configured by the network device 102, the terminal 101 can also learn the second rule based on the configuration information, and further learn the CSI priority of the M CSI-RS resources.

[0281] In some embodiments, the description of the CSI priority corresponding to the M CSI-RS resources can refer to the description of step S2102.

[0282] In an example, in step S2103, if the uplink transmission resource is limited or insufficient, the terminal 101 can discard the CSI corresponding to the CSI-RS resource according to the CSI priority of the CSI corresponding to each CSI-RS resource described in step S2103 when discarding between the CSI corresponding to the M CSI-RS resources, for example, discarding the CSI corresponding to the CSI-RS resource with low CSI priority.

[0283] In another example, in step S2103, if the uplink transmission resource is limited or insufficient, the terminal 101 can partially discard the content of the CSI corresponding to a certain CSI-RS resource, for example, according to the CSI priority of each group in Part2 in the CSI corresponding to the one CSI-RS resource, the CSI content in the group with low CSI priority is discarded.

[0284] In combination with the above examples, discarding part of the CSI corresponding to the M CSI-RS resources can be discarding part of the CSI corresponding to part of the M CSI-RS resources, for example, the CSI-RS resources with low CSI priority. Alternatively, discarding part of the CSI corresponding to the M CSI-RS resources can be discarding part of the CSI corresponding to all of the M CSI-RS resources, for example, discarding part of the CSI corresponding to the CSI-RS resources with low CSI priority.

[0285] In some embodiments, in order to facilitate understanding of the discarding method, the content of the CSI corresponding to the M CSI-RS resources, the grouping method or the CSI storage mapping method is described in the following embodiments.

[0286] In some embodiments, in combination with the description of the foregoing embodiments, the CSI corresponding to the M CSI-RS resources includes Part1 and Part2, Part1 includes the wideband channel quality indicator CQI of the first TB corresponding to x CSI-RS resources and the subband CQI of the first TB corresponding to x CSI-RS resources, 0≤x≤M; Part2 includes M CSI corresponding to M CSI-RS resources.

[0287] Wherein, x represents that the terminal 101 needs to report the wideband CQI of the first TB corresponding to x CSI-RS resources and the subband CQI of the first TB corresponding to x CSI-RS resources. In the embodiments of the present disclosure, the scenario in which Part1 only contains the wideband CQI of the first TB corresponding to 0≤x

[0288] In a first implementation, the implementation is applicable to the case that parameter M is not configured in the configuration information R and x = 0. Wherein, M R may be used to represent the number of CSI-RS resources that need to be reported in the M CSI-RS resources indicated by the network device 102.

[0289] Wherein, the CSI corresponding to the M CSI-RS resources includes Part1 and Part2, and when x = 0, Part1 does not contain the wideband CQI and subband CQI of the first TB. The wideband CQI of the first TB and the subband CQI of the first TB will be contained in Part2.

[0290] In this implementation, the CSI corresponding to each CSI-RS resource in Part2 includes the following groups:

[0291] Group 1, Group 1 includes the wideband CQI of the first transmission block TB, or Group 1 includes the wideband CQI of the first TB and the subband CQI of the first TB;

[0292] Group 2, when the first TB subband CQI is not included in Group 1, Group 2 includes the even subband CQI of the first TB;

[0293] Group 3, Group 3 includes the odd subband CQI of the first TB.

[0294] Wherein, in Part2 of the CSI corresponding to the M CSI-RS resources, the 3 groups of contents corresponding to a single CSI-RS resource are respectively mapped to Part2 according to different CSI-RS resources. For example, in Part2, the 3 groups of contents corresponding to the first CSI-RS resource, the 3 groups of contents corresponding to the second CSI-RS resource, …, the 3 groups of contents corresponding to the Mth CSI-RS resource are included. Wherein, the above CSI storage mapping grouping mode can be applicable to each CSI-RS resource.

[0295] Wherein, each of the above groups can also include other contents.

[0296] For example, the CSI corresponding to each CSI-RS resource in Part2 includes the following groups:

[0297] Group 1, Group 1 includes the wideband CQI of the first transmission block TB, or Group 1 includes the wideband CQI of the first TB and the subband CQI; for CSI reporting based on Rel-15 Type I codebook, Group 1 can also include wideband information; or, for CSI reporting based on Rel-16 eType II codebook, Group 1 can also include Group 0 of the precoding matrix indication PMI;

[0298] The second group includes even subband CQI of the first TB when the first group does not include the subband CQI of the first TB; for CSI reporting based on the Rel-15 Type I codebook, the second group can further include even subband CSI information; or for CSI reporting based on the Rel-16 eType II codebook, the second group can further include Group 1 of PMI.

[0299] The third group includes odd subband CQI of the first TB when the first group does not include the subband CQI of the first TB; for CSI reporting based on the Rel-15 Type I codebook, the third group can further include odd subband CSI information; or for CSI reporting based on the Rel-16 eType II codebook, the third group can further include Group 2 of PMI.

[0300] In this embodiment, the priority of the CSI corresponding to each CSI-RS resource satisfies: the priority of the first group > the priority of the second group > the priority of the third group. Based on the priority order, in a scenario involving CSI dropping, the terminal 101 can preferentially discard the CSI of the third group.

[0301] For the first implementation, a specific example is listed below in combination with the description of the foregoing embodiments.

[0302] Example One

[0303] It is assumed that the network device 102 configures Ks=4 CSI-RS resources for the terminal 101 through configuration information, and further configures the terminal 101 to report CSI of M=3 CSI-RS resources, and the codebook type configured for the terminal 101 is the Rel-15 Type I SP codebook. The CSI corresponding to the M=3 CSI-RS resources is reported in two parts, Part 1 and Part 2. Among them, Part 1 includes: M CRIs, M RIs. It is assumed that x=0, that is, the wideband CQI of the first TB and the subband CQI of the first TB corresponding to each CSI-RS resource are not included in Part 1. Part 2 includes: the PMI corresponding to the M CSI-RS resources, the wideband CQI and the subband CQI of the first TB corresponding to the M CSI-RS resources, the wideband CQI and the subband CQI of the second TB, and the LI corresponding to the M CSI-RS resources.

[0304] For the CSI corresponding to each CSI-RS resource in Part 2, it can be divided into three groups:

[0305] The first group includes: wideband CQI and subband CQI of the first TB, wideband CQI and subband CQI of the second TB, indication information related to wideband i1 in PMI, LI;

[0306] The second group includes: even subband CQI of the second TB, indication information related to even subband i2 in PMI;

[0307] The third group includes: odd subband CQI of the second TB, indication information related to odd subband i2 in PMI.

[0308] In this example, the CSI priorities of the three CSI-RS resources can be determined according to the metric values, such as CQI. Assuming that the terminal 101 calculates that the wideband CQI of the first TB corresponding to the third CSI-RS resource is the largest, and the wideband CQI of the first TB corresponding to the second CSI-RS resource is the smallest, among the M=3 CSI-RS resources. Then, the CSI priorities of the three resources are defined as:

[0309] The CSI corresponding to the third CSI-RS resource > the CSI corresponding to the first CSI-RS resource > the CSI corresponding to the second CSI-RS resource.

[0310] In this example, the priority in each CSI-RS resource satisfies: the CSI priority of the first group > the CSI priority of the second group > the CSI priority of the third group, wherein " > " means that the priority is greater than or higher than. For example, the CSI priority of the first group > the CSI priority of the second group, which means that the CSI priority of the first group is higher than the CSI priority of the second group.

[0311] In the second implementation, this implementation is applicable to the case where the parameter M is not configured in the configuration information R and x=0. The parameter meanings can refer to the previous implementation. The difference between this implementation and the previous implementation is that the grouping or mapping manner of the CSI is different.

[0312] Wherein, the CSI corresponding to the M CSI-RS resources still includes: Part1 and Part2. When x=0, Part1 does not contain the wideband CQI and subband CQI of the first TB. The wideband CQI of the first TB and the subband CQI of the first TB will be contained in Part2.

[0313] In this implementation, Part2 includes:

[0314] The 0th group, which includes the wideband CQI of the first TB, or includes the wideband CQI and subband CQI of the first TB;

[0315] The CSI corresponding to each CSI-RS resource in Part2 includes the following groups:

[0316] Group 0 including wideband information or PMI;

[0317] Group 1 including even subband CSI information or PMI;

[0318] Group 2 including odd subband CSI information or PMI.

[0319] The wideband information can include wideband CQI, or wideband LI, etc. In combination with the description of the foregoing embodiments, the "or" in each group above is related to the type of the configured codebook, for example, when reporting based on Type I codebook, the first group can include wideband information; when reporting based on Type 2 codebook, the first group can include Group 0 of PMI; the following embodiments can refer to the description herein.

[0320] In one example, in Part 2 of the CSI corresponding to the M CSI-RS resources, 4 groups of contents corresponding to a single CSI-RS resource are mapped to Part 2 according to different CSI-RS resources. For example, in Part 2, 4 groups of contents corresponding to the first CSI-RS resource, 4 groups of contents corresponding to the second CSI-RS resource, and 4 groups of contents corresponding to the Mth CSI-RS resource are included.

[0321] In another example, for the purpose of preferentially transmitting Group 0, in Part 2 of the CSI corresponding to the M CSI-RS resources, Group 0, other 3 groups of contents corresponding to the first CSI-RS resource except Group 0, other 3 groups of contents corresponding to the second CSI-RS resource except Group 0, and other 3 groups of contents corresponding to the Mth CSI-RS resource except Group 0 can be included. In this example, Group 0 includes wideband CQI and subband CQI of the first TB corresponding to the M resources, or Group 0 includes wideband CQI corresponding to the M resources.

[0322] In this example, the mapping order of the first TB corresponding to the M CSI-RS resources in Group 0 can be determined according to the second rule, such as one or more of the priority determination manners of the CSI corresponding to the M CSI-RS resources described above.

[0323] In this embodiment, the priority of the CSI corresponding to each CSI-RS resource satisfies: the priority of Group 0 CSI > the priority of Group 1 CSI > the priority of Group 2 CSI > the priority of Group 3 CSI.

[0324] For the first TB of the M resources, the priority of the CSI of the 0th group is higher than that of the 1st group, the priority of the CSI of the 1st group is higher than that of the 2nd group, and the priority of the CSI of the 2nd group is higher than that of the 3rd group.

[0325] For the second implementation, a specific example is listed as follows in combination with the description of the foregoing embodiments.

[0326] Example Two

[0327] In combination with the scenario of Example One in the first implementation, the network device 102 configures the terminal 101 with Ks=4 CSI-RS resources through configuration information, and also configures the terminal 101 to report CSI of M=3 CSI-RS resources, and the codebook type configured for the terminal 101 is Rel-15 Type I SP codebook. The CSI corresponding to the M=3 CSI-RS resources is reported in two parts, Part 1 and Part 2. In the Part 1, M CRIs and M RIs are included. It is assumed that x=0, that is, the wideband CQI and the subband CQI of the first TB of each CSI-RS resource are not included in the Part 1. In the Part 2, M PMIs, the wideband CQI and the subband CQI of the first TB, the wideband CQI and the subband CQI of the second TB, and M LIs corresponding to the M CSI-RS resources are included.

[0328] The Part 2 can be divided into four groups.

[0329] The 0th group includes the wideband CQI and the subband CQI of the first TB of the M resources.

[0330] The CSI corresponding to each CSI-RS resource in the Part 2 can be divided into the following three groups.

[0331] The 1st group includes wideband information or Group 0 of the PMI.

[0332] The 2nd group includes even subband CSI information or Group 1 of the PMI.

[0333] The 3rd group includes odd subband CSI information or Group 2 of the PMI.

[0334] The priority of the CSI of the 1st group is higher than that of the 2nd group, and the priority of the CSI of the 2nd group is higher than that of the 3rd group.

[0335] The priority of the 0th group is higher than the priority of the CSI groups corresponding to the M CSI-RS resource pairs. The priority of the M resources can be defined according to the wideband CQI of the first TB corresponding to each resource, for example, as in Example 1 above.

[0336] In this example: the 0th group of CSI > the first group of CSI of the third resource > the second group of CSI of the third resource > the third group of CSI of the third resource > the first group of CSI of the first resource > the second group of CSI of the first resource > the third group of CSI of the first resource > the first group of CSI of the second resource > the second group of CSI of the second resource > the third group of CSI of the second resource.

[0337] In a third implementation, the implementation is applicable when the parameter M is not configured in the configuration information R When x = N, N > 0; the parameter meanings can be referred to any of the above implementations.

[0338] Wherein, N can satisfy: 1≤N≤M is a positive integer.

[0339] In this implementation, when N > 0, Part 1 includes the wideband channel quality indicator CQI and subband CQI of the first TB corresponding to the N CSI-RS resources in Part 1.

[0340] In this implementation, the N CSI-RS resources can be determined according to a first rule among the M CSI-RS resources.

[0341] For example, the first rule satisfies at least one of the following:

[0342] The first rule is defined by a protocol or configured by a network device; for example, the terminal 101 can determine the N CSI-RS resources based on the protocol predefinition or NW configuration.

[0343] The first rule is: according to the index or identification order of the CSI-RS resources, select N CSI-RS resources from the M CSI-RS resources; for example, the terminal 101 selects N CSI-RS resources according to the size of the CSI-RS resource index or CSI-RS ID.

[0344] The first rule is: according to the defined or configured metric value, select N CSI-RS resources from the M CSI-RS resources.

[0345] Wherein, the metric value is at least one of the following: CQI of the CSI-RS resource; signal-to-noise ratio SINR of the CSI-RS resource; rank indication RI of the CSI-RS resource; PMI of the CSI-RS resource.

[0346] In this embodiment, the CSI corresponding to each CSI-RS resource in Part 2 includes the following groups:

[0347] The first group includes wideband information or PMI of Group 0;

[0348] The second group includes even subband CSI information or PMI of Group 1;

[0349] The third group includes odd subband CSI information or PMI of Group 2.

[0350] It is worth noting that in this embodiment, Part 2 no longer includes the wideband CQI and subband CQI of the first TB corresponding to the CSI-RS resource in Part 1.

[0351] In this embodiment, Part 2 can also include the wideband CQI and subband CQI of the first TB corresponding to the M-N CSI-RS resources.

[0352] For example, for any or each of the M-N CSI-RS resources (denoted as the pth CSI-RS resource), the CSI corresponding to the pth CSI-RS resource in Part 2 includes the following groups:

[0353] The first group includes the wideband CQI of the first TB corresponding to the pth CSI-RS resource, and other wideband information or PMI of Group 0 corresponding to the pth CSI-RS resource; or, the first group includes the wideband CQI and subband CQI of the first TB corresponding to the pth CSI-RS resource, and other wideband information or PMI of Group 0 corresponding to the pth CSI-RS resource;

[0354] The second group includes even subband CQI of the first TB, and even subband CSI information or PMI of Group 1 of other TBs;

[0355] The third group includes odd subband CQI of the first TB, and odd subband CSI information or PMI of Group 2 of other TBs.

[0356] For another example, in the CSI corresponding to a certain CSI-RS resource in Part 2, the wideband CQI and subband CQI of the first TB corresponding to the M-N CSI-RS resources are included. The CSI corresponding to the certain CSI-RS resource can be the CSI corresponding to the CSI-RS resource with higher priority.

[0357] For example, in the first embodiment, in Part 2, the first group includes the wideband CQI and the subband CQI of the first TB corresponding to the M-N CSI-RS resources.

[0358] In this embodiment, the priority of the CSI corresponding to each CSI-RS resource satisfies: the priority of the CSI of the first group > the priority of the CSI of the second group > the priority of the CSI of the third group.

[0359] For the third embodiment, a specific example is listed as follows in combination with the description of the foregoing embodiments.

[0360] Example Three

[0361] In combination with the scenario of Example One in the first embodiment, the network device 102 configures Ks=4 CSI-RS resources for the terminal 101 through configuration information, and also configures the terminal 101 to report the CSI of M=3 CSI-RS resources, and the codebook type configured for the terminal 101 is Rel-15 Type I SP codebook. The CSI corresponding to the M=3 CSI-RS resources is reported in two parts, Part 1 and Part 2.

[0362] Suppose x=N=1, Part 1 includes the wideband CQI and the subband CQI of the first TB corresponding to 1 CSI-RS resource, or Part 1 includes the CQI of the first TB corresponding to 1 CSI-RS resource.

[0363] Part 2 includes: the PMI corresponding to the M CSI-RS resources, the wideband CQI and the subband CQI of the first TB corresponding to M-1 CSI-RS resources, the wideband CQI and the subband CQI of the second TB, and the LI corresponding to the M CSI-RS resources.

[0364] For the CSI corresponding to each CSI-RS resource in Part 2, it can be divided into three groups:

[0365] The first group includes: the wideband CQI and the subband CQI of the first TB corresponding to M-1 CSI-RS resources, the wideband CQI and the subband CQI of the second TB, the indication information related to the wideband i1 in the PMI, and the LI;

[0366] The second group includes: the even subband CQI of the second TB, and the indication information related to the even subband i2 in the PMI;

[0367] The third group includes: the odd subband CQI of the second TB, and the indication information related to the odd subband i2 in the PMI.

[0368] In the first example, the CSI priorities corresponding to the three CSI-RS resources can still be based on CQI, and the CSI priorities of the three resources are defined as: the CSI corresponding to the third CSI-RS resource > the CSI corresponding to the first CSI-RS resource > the CSI corresponding to the second CSI-RS resource.

[0369] In this example, the priorities in each CSI-RS resource satisfy: the CSI priority of the first group > the CSI priority of the second group > the CSI priority of the third group.

[0370] In the fourth implementation, the embodiment is applicable to the case where the parameter M R and M R > 0 are configured in the configuration information. The parameter meanings can refer to any of the above embodiments.

[0371] In this embodiment, when the parameter M R and M R > 0 are configured in the configuration information, in Part 1 and / or Part 2, the priorities of the CSI corresponding to M R CSI-RS resources are greater than the priorities of the CSI corresponding to (M-M R ) CSI-RS resources.

[0372] In this embodiment, x = M R . Then, in Part 1, the wideband CQI and subband CQI of the first TB corresponding to M R CSI-RS resources can be included.

[0373] In this embodiment, in Part 2, the CSI corresponding to each CSI-RS resource includes the following groups:

[0374] The first group includes wideband information or PMI Group 0.

[0375] The second group includes even subband CSI information or PMI Group 1.

[0376] The third group includes odd subband CSI information or PMI Group 2.

[0377] It is worth noting that in this embodiment, Part 2 no longer includes the wideband CQI and subband CQI of the first TB corresponding to the CSI-RS resources in Part 1.

[0378] In this embodiment, when x = M R , in Part 2, M-M R CSI-RS resources can also be included.The wideband CQI and the subband CQI of the first TB corresponding to the first CSI-RS resource.

[0379] For example, for any or each of the M-M CSI-RS resources (denoted as the pth CSI-RS resource), the CSI corresponding to the pth CSI-RS resource in Part 2 includes the following groups:

[0380] The first group includes the wideband CQI of the first TB corresponding to the pth CSI-RS resource, and other wideband information or PMI of Group 0 corresponding to the pth CSI-RS resource; or, the first group includes the wideband CQI and the subband CQI of the first TB corresponding to the pth CSI-RS resource, and other wideband information or PMI of Group 0 corresponding to the pth CSI-RS resource.

[0381] The second group includes the even subband CQI of the first TB, and the even subband CQI information or PMI of Group 1 of other TBs.

[0382] The third group includes the odd subband CQI of the first TB, and the odd subband CQI information or PMI of Group 2 of other TBs.

[0383] For another example, in the CSI corresponding to a certain CSI-RS resource in Part 2, the wideband CQI and the subband CQI of the first TB corresponding to the M-M R CSI-RS resources are included. The CSI corresponding to the certain CSI-RS resource can be the CSI corresponding to a CSI-RS resource with a higher priority.

[0384] For another example, in combination with the second embodiment described above, in the 0th group in Part 2, the wideband CQI and the subband CQI of the first TB corresponding to the M-M R CSI-RS resources are included.

[0385] In this embodiment, the priority of the CSI corresponding to each CSI-RS resource satisfies: the priority of the first group > the priority of the second group > the priority of the third group.

[0386] For the fourth embodiment, a specific example is listed below in combination with the description of the foregoing embodiments.

[0387] Example four:

[0388] Assume that the network device 102 configures the terminal 101 with Ks=4 CSI-RS resources through configuration information, and the resource IDs are CSI-RS resource ID1, CSI-RS resource ID2, CSI-RS resource ID3, and CSI-RS resource ID4. The network device 102 also configures the terminal 101 to report CSI of M=2 CSI-RS resources. The codebook type configured for the terminal 101 is Rel-16 Type II codebook. The CSI corresponding to the M=2 resources is still reported in two parts, CSI Part 1 and Part 2.

[0389] Assume that the network device 102 configures the terminal 101 with M R =1, and M-M R CRIs and M RIs in Part 1. Let x=M, then the wideband CQI and subband CQI of the first TB corresponding to the M CSI-RS resources are included in Part 1. Let the CSI Part 2 corresponding to each CSI-RS resource be divided into the following three groups:

[0390] The first group: Group 0, includes the indices i 1,1 (if reported), i 1,2 (if reported), and i 1,8,l (l=1,...,υ), where υ represents the layer or rank;

[0391] The second group: Group 1, includes the high priority elements of the indices i 1,5 (if reported), i 1,6,l (if reported), and i 1,7,l i 2,3,l i 2,4,l i 2,5,l (l=1,...,υ) of the high priority elements where NZ represents the number of non-zero coefficients, L represents the number of spatial odd vectors, and M represents the number of frequency domain odd vectors;

[0392] The third group: Group 2, includes the low priority elements of the indices i 1,7,l i 2,4,l i 2,5,l (l=1,...,υ) of the low priority elements

[0393] Assume that the network device 102 configures the terminal 101 with M R ​​​​CSI Part 2 corresponding to CSI-RS resource ID 1, then for CSI Part 2, it can be satisfied that: the content of CSI Part 2 corresponding to CSI-RS resource ID 1 is stored preferentially in Part 2, and then M-M R CRI indicated CSI-RS resource ID corresponding CSI Part 2 is stored.

[0394] Based on the above description, in another optional example, the terminal 101 stores the content of CSI Part 1 and Part 2 corresponding to CSI-RS resource ID 1 in the reported CSI first, and then stores the content of CSI Part 1 and Part 2 corresponding to the CSI-RS resource ID indicated by M-M R CRI. Among them, the CSI priority corresponding to CSI-RS resource ID 1 is higher than the CSI priority corresponding to the CSI-RS resource ID indicated by M-M R CRI. R CRI. The CSI Part 1 priority of CSI-RS resource ID 1 is higher than the CSI Part 1 priority of the CSI-RS resource ID indicated by M-M R CRI. R CRI.

[0395] If M-M R CRI indicated CSI-RS resource ID is CSI-RS resource ID 3. The CSI priority can be defined as:

[0396] CSI part1 of CSI-RS resource ID1 > CSI part2 of CSI-RS resource ID1 > CSI part1 of CSI-RS resource ID3 > CSI part2 of CSI-RS resource ID3. Or CSI part1 of CSI-RS resource ID1 > CSI part1 of CSI-RS resource ID3 > CSI part2 of CSI-RS resource ID1 > CSI part2 of CSI-RS resource ID3.

[0397] In the fifth embodiment, the embodiment can be applied to different cases that parameter M is not configured in the configuration information R and x = 0, or, parameter M is not configured in the configuration information R and x = N, N > 0, or, parameter M is configured in the configuration information R and M R ≥ 0. The parameter meanings can refer to any of the above embodiments.

[0398] In this embodiment, Part1 includes the wideband channel quality indication CQI and subband CQI of the first TB corresponding to x CSI-RS resource pairs.

[0399] In this embodiment, Part2 includes the following groups:

[0400] The first group includes the wideband CQI and / or wideband information corresponding to M CSI-RS resources, or the first group includes Group0.

[0401] The second group includes the even subband CQI and / or even subband CSI information corresponding to M CSI-RS resources, or the second group includes Group1.

[0402] The third group includes the odd subband CQI and / or odd subband CSI information corresponding to M CSI-RS resources, or the third group includes Group2.

[0403] In this embodiment, in Part2 of CSI corresponding to M CSI-RS resource pairs, Part2 is divided into 3 groups, each of which includes the content of Part2 corresponding to M CSI-RS resource pairs. For example, in Part2, there are: the first group, the second group, and the third group, each of which contains the content of Part2 corresponding to M CSI-RS resource pairs. The difference from the first embodiment is that in the first embodiment, Part2 includes 3 groups of content corresponding to different single CSI-RS resources (i.e., the 3 groups of content corresponding to a certain resource can be relatively independent of the 3 groups of content corresponding to other resources).

[0404] In this embodiment, when the parameter M R and M R > 0 are configured, the CSI priority of each group in Part2 satisfies: in the first group, the second group, or the third group, the CSI priority corresponding to M R CSI-RS resources is greater than the CSI priority corresponding to (M-M R ) CSI-RS resources.

[0405] In this embodiment, when the parameter M R and M R > 0 are configured, the CSI priority of each group in Part2 satisfies: in the first group, the second group, or the third group, the CSI priority corresponding to M R CSI-RS resources is greater than the CSI priority corresponding to (M-M R ) CSI-RS resources.

[0406] For example, the CSI order of each group in Part2 satisfies:

[0407] In the first group, the wideband CQI and / or wideband information corresponding to M R CSI-RS resources are mapped first, or Group0; then the wideband CQI and / or wideband information corresponding to (M-MR) CSI-RS resources are mapped, or Group0;

[0408] In the second group, the even subband CQI and / or even subband CSI information corresponding to M R CSI-RS resources are mapped first, or Group1; then the even subband CQI and / or even subband CSI information corresponding to (M-MR) CSI-RS resources are mapped, or Group1;

[0409] In the third group, the odd subband CQI and / or odd subband CSI information corresponding to M R CSI-RS resources are mapped first, or Group2; then the odd subband CQI and / or odd subband CSI information corresponding to (M-MR) CSI-RS resources are mapped, or Group2.

[0410] In this embodiment, the CSI priority of each group in Part2 is determined according to a second rule, wherein the second rule is the same as or different from the first rule.

[0411] The second rule can refer to the description of the foregoing embodiments, for example, the second rule satisfies at least one of the following:

[0412] The second rule is to determine the CSI priorities corresponding to the M CSI-RS resources according to a defined or configured metric value.

[0413] The second rule is to determine the CSI priorities corresponding to the M CSI-RS resources according to the order of the indexes or identifiers of the CSI-RS resources.

[0414] The second rule is defined by a protocol or configured by the network device.

[0415] The second rule is to determine the CSI priorities corresponding to the M CSI-RS resources according to the order of the CSI-RS resources in Part 1.

[0416] The metric value is at least one of the following:

[0417] CQI of the CSI-RS resource.

[0418] Signal-to-noise and interference ratio (SINR) of the CSI-RS resource.

[0419] Rank indication (RI) of the CSI-RS resource.

[0420] PMI of the CSI-RS resource.

[0421] In some embodiments, the terminal 101 can discard part or all of the CSIs corresponding to part or all of the CSI-RS resources based on the priorities among the CSIs corresponding to different CSI-RS resources and the priorities among different groups of CSIs when the uplink transmission resource is limited, such as discarding the contents in the group with low priority corresponding to the CSI-RS resource with low priority.

[0422] In step S2104, the terminal 101 reports the remaining CSIs corresponding to the M CSI-RS resources to the network device 102.

[0423] In some embodiments, based on the discarding in step S2103, the terminal 101 can report the remaining CSIs, such as reporting the remaining CSIs corresponding to part or all of the M CSI-RS resources, so as to ensure a certain system performance even when part of the CSIs are discarded.

[0424] In some embodiments, the name of information and the like is not limited to the name described in the embodiments, and the terms of "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", and the like can be replaced with each other.

[0425] In some embodiments, "acquire", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be replaced with each other, which can be interpreted as receiving from other subjects, acquiring from protocols, acquiring from higher layers, obtaining by processing oneself, implementing autonomously, and the like.

[0426] In some embodiments, the terms of "send", "transmit", "report", "issue", "transmit", "bidirectional transmission", "send and / or receive" can be replaced with each other.

[0427] In some embodiments, the terms of "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like can be replaced with each other.

[0428] In some embodiments, the terms of "time", "time point", "time", "time position" and the like can be replaced with each other, and the terms of "time length", "time period", "time window", "window", "time" and the like can be replaced with each other.

[0429] In some embodiments, the terms of "component carrier (CC)", "cell", "frequency carrier", "carrier frequency" and the like can be replaced with each other.

[0430] In some embodiments, the terms "certain", "preset", "pre-set", "set", "indicated", "any", "first", and the like can be replaced with each other, and "certain A", "preset A", "pre-set A", "set A", "indicated A", "any A", "first A" can be interpreted as A predetermined in a protocol or the like, or A obtained by setting, configuring, or indicating, or a specific A, any A, or first A, but are not limited thereto.

[0431] In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values (for example, comparison with a predetermined value), but is not limited thereto.

[0432] In some embodiments, "not expected to receive" can be interpreted as not receiving in the time domain resource and / or the frequency domain resource, or as not performing subsequent processing on the data or the like after receiving the data or the like; "not expected to send" can be interpreted as not sending, or as sending but not expecting the receiver to respond to the content of the sending.

[0433] The method related to the embodiments of the present disclosure can include at least one of steps S2101-S2104.

[0434] In some embodiments, step S2102 is optional, and in different embodiments, one or more steps can be replaced.

[0435] In some embodiments, other optional implementations described before or after the corresponding description of FIG. 2 can be referred to.

[0436] In the embodiments of the present disclosure, the content in Part 1 can be reduced, which is beneficial to reduce the information length of Part 1 and improve the accuracy of Part 1 decoding. Moreover, based on the different grouping mapping manners in the embodiments of the present disclosure and the priority decision manners of the CSI corresponding to different resources, the terminal can select the discarded CSI to ensure a certain system performance when discarding part of the CSI.

[0437] FIG. 3a is a flow diagram of a CSI reporting method according to an embodiment of the present disclosure. As shown in FIG. 3a, the present disclosure relates to a CSI reporting method, which is performed by a terminal 101, and the above method includes:

[0438] In step S3101, configuration information is received.

[0439] In some embodiments, the implementation of step S3101 can refer to the implementation of step S2101 in FIG. 2, which will not be repeated here.

[0440] Step S3102, determining CSI priorities corresponding to the M CSI-RS resources.

[0441] In some embodiments, the implementation of step S3102 can refer to the implementation of step S2102 in FIG. 2, which will not be repeated here.

[0442] Step S3103, discarding part of CSI corresponding to the M CSI-RS resources according to the configuration information and the CSI priorities corresponding to the M CSI-RS resources.

[0443] In some embodiments, the implementation of step S3103 can refer to the implementation of step S2103 in FIG. 2, which will not be repeated here.

[0444] Step S3104, reporting the remaining CSI corresponding to the M CSI-RS resources.

[0445] In some embodiments, the implementation of step S3104 can refer to the implementation of step S2104 in FIG. 2, which will not be repeated here.

[0446] In some embodiments, other optional implementations can be described before or after the description of FIG. 3a.

[0447] FIG. 3b is a flow diagram of a CSI reporting method according to an embodiment of the present disclosure. As shown in FIG. 3b, the present embodiment relates to a CSI reporting method, which is performed by a terminal 101, and the above method comprises:

[0448] Step S3201, receiving configuration information.

[0449] In some embodiments, the implementation of step S3201 can refer to the implementation of step S2101 in FIG. 2, which will not be repeated here.

[0450] Step S3202, discarding part of CSI corresponding to the M CSI-RS resources according to the configuration information and the CSI priorities corresponding to the M CSI-RS resources.

[0451] In some embodiments, the implementation of step S3202 can refer to the implementation of step S2103 in FIG. 2, which will not be repeated here.

[0452] Step S3203, reporting the remaining CSI corresponding to the M CSI-RS resources.

[0453] In some embodiments, the implementation of step S3203 can refer to the implementation of step S2104 in FIG. 2, which will not be repeated here.

[0454] In some embodiments, other optional implementations can be referred to the description corresponding to FIG. 3b before or after.

[0455] FIG. 4 is a flow diagram of a CSI reporting method according to an embodiment of the present disclosure. As shown in FIG. 4, the present disclosure relates to a CSI reporting method, which is performed by the network device 102, and the method comprises the following steps:

[0456] In step S4101, configuration information is sent.

[0457] In some embodiments, the implementation of step S4101 can refer to the implementation of step S2101 in FIG. 2, which will not be repeated here.

[0458] In step S4102, the remaining CSI corresponding to M CSI-RS resources is received.

[0459] In some embodiments, the implementation of step S4102 can refer to the implementation of steps S2103-S2104 in FIG. 2, which will not be repeated here.

[0460] In some embodiments, other optional implementations can be referred to the description corresponding to FIG. 4 before or after.

[0461] In the embodiments of the present disclosure, a CSI or UCI parameter information storage method and priority definition method corresponding to each CSI-RS resource in Part 1 and Part 2 are proposed to ensure certain system performance when part of the CSI is discarded. In order to facilitate the understanding of the embodiments of the present disclosure, some embodiments under different cases are listed as follows:

[0462] Suppose that Ks CSI-RS resources are configured by the NW side for UE to measure the downlink channel, and M CSI-RS resources are also configured for CSI reporting. Let x represent the wideband CQI and subband CQI of the first TB corresponding to x resources reported by the UE.

[0463] Case 1

[0464] When M R = 0, the NW side does not configure the parameter M R , and x = 0:

[0465] Alt1: CSI of each resource is still divided into three groups, the first group in CSI Part 2 includes at least the wideband CQI and subband CQI of the first TB, or at least contains the wideband CQI of the first TB; if the first group only contains the wideband CQI of the first TB, the second group at least also includes the even subband CQI of the first TB; the third group at least also includes the odd subband CQI of the first TB, Part 2 contains M CSI-RS resources.

[0466] The priority of each group of parameters in the CSI corresponding to each CSI-RS resource is defined as: first group > second group > third group. That is, the CSI priority of the first group is higher than that of the second group, and the CSI priority of the second group is higher than that of the third group.

[0467] The priority of each CSI corresponding to the M CSI-RS resources is determined according to one or more of the following ways:

[0468] According to the first metric value, the first metric value includes at least one of the CQI, SINR, RI, and PMI of the CSI-RS resource.

[0469] The order of the CSI-RS resource index or the CSI-RS resource ID.

[0470] Protocol predefinition or network configuration.

[0471] According to the mapping order of each CRI in Part 1.

[0472] Alt2: Part 2 contains the 0th group, the 0th group contains the wideband CQI and subband CQI of the first TB corresponding to the M resources, or only contains the wideband CQI, and the CSI parameters of each resource are still divided into three groups. The content of the CSI parameters of each group is the same as the content of the CSI parameters defined in the existing standard. The priority of each group is defined as: the 0th group > the content contained in the CSI parameters corresponding to the M CSI-RS resources. The priority of each CSI corresponding to the M CSI-RS resources is defined as described in Alt1.

[0473] The mapping order of each first TB in the 0th group corresponding to the M resources: one or more of the priority of each CSI corresponding to the M CSI-RS resources.

[0474] An embodiment 1 is listed for case 1:

[0475] Assume that the gNB configures Ks=4 CSI-RS resources to the UE, and also configures the UE to report M=3 CSI of CSI-RS resources. The codebook type configured to the UE is Rel-15 Type I SP codebook. The CSI of the three resources is still divided into two parts, Part 1 and Part 2, to report. Part 1 includes M CRIs, M RIs. Assume that the wideband CQI and subband CQI of the first TB of each resource are not included in Part 1, i.e., x=0. Part 2 includes the PMI of the M resources, the wideband CQI and subband CQI of the first and second TBs of the M resources, and the LI of the M resources.

[0476] For Alt1, the CSI of each resource is divided into three groups:

[0477] The first group: the wideband CQI and subband CQI of the first and second TBs, the indication information related to the wideband i1 in the PMI, and the LI;

[0478] The second group: the even subband CQI of the second TB, and the indication information related to the even subband i2 in the PMI;

[0479] The third group: the odd subband CQI of the second TB, and the indication information related to the odd subband i2 in the PMI.

[0480] The CSI of the above first group has a higher priority than the CSI of the second group, and the CSI of the second group has a higher priority than the CSI of the third group. Assume that the UE calculates that the wideband CQI of the first TB corresponding to the third resource is the largest, and the wideband CQI of the first TB corresponding to the second resource is the smallest. Then the priority of the CSI of the three resources is defined as:

[0481] The CSI of the third resource > the CSI of the first resource > the CSI of the second resource.

[0482] For Alt2, Part 2 is divided into four groups. The 0th group includes the wideband CQI and subband CQI of the first TB of the M resources. The other three groups of each resource include the same information as in the existing standard, and the priority of the first group is higher than that of the second group, and the priority of the second group is higher than that of the third group. The priority of the 0th group is the content included in each group of the CSI parameters corresponding to the M CSI-RS resources. The priority of the CSI of the M resources is defined as in Alt1, and the priority of each resource is defined according to the wideband CQI of the first TB corresponding to each resource. Then:

[0483] The first group of CSI of the third resource > the first group of CSI of the first resource > the first group of CSI of the second resource > the first group of CSI of the third resource > the second group of CSI of the third resource > the second group of CSI of the first resource > the second group of CSI of the second resource > the third group of CSI of the third resource > the first group of CSI of the first resource > the second group of CSI of the first resource > the third group of CSI of the first resource > the first group of CSI of the second resource > the second group of CSI of the second resource > the third group of CSI of the second resource > the first group of CSI of the third resource > the second group of CSI of the third resource > the third group of CSI of the third resource.

[0484] The mapping order of the wideband and subband CQI of the first TB corresponding to the M resources in the above-mentioned 0th group can also adopt the same criteria as the CSI priority of the M resources. For example, the priority is defined according to the wideband CQI of the first TB. Then, the mapping order of the wideband and subband CQI of the first TB in the 0th group is: the wideband CQI and the subband CQI of the third resource, the wideband CQI and the subband CQI of the first resource, and the wideband CQI and the subband CQI of the second resource.

[0485] Case 2

[0486] When M R = 0, the NW side does not configure the parameter M R , and x = N, 1 ≤ N ≤ M is a positive integer:

[0487] Part 1 includes at least N CSI-RS resources corresponding to the wideband CQI and subband of the first TB. The CSI-RS resource definition method is as follows:

[0488] The corresponding CSI-RS resource is determined by the protocol or the NW configuration

[0489] N CSI-RS resources are selected according to the size of the CSI-RS resource index or CSI-RS ID

[0490] The N CSI-RS resources are determined according to the above-mentioned first metric value

[0491] The parameters and the priority of each resource included in Part 2 are defined as in Alt1 and Alt2 of Case 0 above. Different from Case 0, Part 2 no longer includes the wideband CQI and subband CQI of the first TB corresponding to the CSI-RS resource in Part 1.

[0492] An embodiment 2 is listed for case 2:

[0493] Similar to embodiment 1, only the wideband CQI and subband CQI of the first TB corresponding to one CSI-RS resource are included in Part 1, or only the wideband CQI is included. The mapping order of other contents in Part 1 and Part 2 or the CSI priority of each group is the same as that of embodiment 1. For example:

[0494] The network device 102 configures the terminal 101 with Ks=4 CSI-RS resources through configuration information, and also configures the terminal 101 to report CSI of M=3 CSI-RS resources, and the codebook type configured for the terminal 101 is Rel-15 Type I SP codebook. The CSI of the M=3 CSI-RS resources is reported in two parts, Part 1 and Part 2.

[0495] Assuming x=N=1, Part 1 includes wideband CQI and subband CQI of the first TB corresponding to 1 CSI-RS resource, or Part 1 includes CQI of the first TB corresponding to 1 CSI-RS resource.

[0496] Part 2 includes: PMI corresponding to M CSI-RS resources, wideband CQI and subband CQI of the first TB corresponding to M-1 CSI-RS resources, wideband CQI and subband CQI of the second TB, and LI corresponding to M CSI-RS resources.

[0497] The CSI corresponding to each CSI-RS resource in Part 2 can be divided into three groups:

[0498] The first group includes: wideband CQI and subband CQI of the first TB corresponding to M-1 CSI-RS resources, wideband CQI and subband CQI of the second TB, indication information related to wideband i1 in PMI, and LI;

[0499] The second group includes: even subband CQI of the second TB, and indication information related to even subband i2 in PMI;

[0500] The third group includes: odd subband CQI of the second TB, and indication information related to odd subband i2 in PMI.

[0501] In combination with Example One, the CSI priorities of the three CSI-RS resources can still be based on CQI, and the CSI priorities of the three resources are defined as: the CSI corresponding to the third CSI-RS resource > the CSI corresponding to the first CSI-RS resource > the CSI corresponding to the second CSI-RS resource.

[0502] In this example, the priority of each CSI-RS resource satisfies: the CSI priority of the first group > the CSI priority of the second group > the CSI priority of the third group.

[0503] Case 3

[0504] When M R >0, the NW side configures the parameter M R , for example, the NW side configures the parameter 0<MR The value of .

[0505] Option 1: Part 1 includes the first TB of broadband CQI and subband CQI corresponding to x = 0 or N CSI-RS resources. Optionally, x = M R The first TB of broadband CQI and subband CQI corresponding to each CSI-RS resource.

[0506] Part 2 M R The CSI priority corresponding to a CSI-RS resource is higher than that of other MMs. R CSI parameter information corresponding to each CSI-RS resource. The CSI for each resource is still divided into three groups, with the CSI priority of the first group > the CSI priority of the second group > the CSI priority of the third group. For M... R The priority of each resource in a CSI-RS resource, or MM R The priority definition of each resource in the CSI-RS resource is the same as the priority definition method of each resource described in Alt1 above.

[0507] Option 2: Stores the CSI Part 1 and CSI Part 2 for each of the M resources. R The CSI priority corresponding to this resource is higher than MM. R The priority of each resource. For M R The priority of each resource in a CSI-RS resource, or MM R The priority definition of each resource in the CSI-RS resource is the same as the priority definition method of each resource described in Alt1 above.

[0508] Example 3 is provided for case 3:

[0509] Assume the gNB configures Ks = 4 CSI-RS resources for the UE, with resource IDs designated as CSI-RS resource ID1, CSI-RS resource ID2, CSI-RS resource ID3, and CSI-RS resource ID4. It also configures the UE to report M = 2 CSI-RS resources. The codebook type configured for the UE is Rel-16 Type II codebook. The CSI reports for the M resources are still divided into CSI Part 1 and Part 2. Assume the gNB configures M... R =1, Part 1 includes MM RCRI, M RIs. Assume that in Part 1 contains the wideband CQI and subband CQI corresponding to M resources, i.e., x = M. Let the CSI Part 2 corresponding to each resource be divided into the following three groups:

[0510] Group 1: Group 1 includes the indices i 1,1 (if reported), i 1,2 (if reported), and i 1,8,l (l = 1, …, υ), where υ represents the layer or rank;

[0511] Group 2: Group 2 includes the indices i 1,5 (if reported), i 1,6,l (if reported), i 1,7,l high priority elements of i i 2,3,l , i 2,4,l high priority elements of i i 2,5,l high priority elements of i where NZ represents the number of non-zero coefficients, L represents the number of spatial singular vectors, and M represents the number of frequency singular vectors;

[0512] Group 3: Group 2 includes the indices i 1,7,l low priority elements of i i 2,4,l low priority elements of i i 2,5,l low priority elements of i

[0513] Assume that the gNB configures the UE with M R = 1 corresponding to the resource CSI-RS resource ID1, then the CSI Part 2 stores the content of the CSI Part 2 corresponding to the CSI-RS resource ID1 in priority, and then stores the CSI Part 2 corresponding to the CSI-RS resource ID indicated by the M-M R CRI.

[0514] For Option 2, the CSI-RS resource ID1 corresponding to the CSI Part 1 and Part 2 is stored in the reported CSI in priority, and then the CSI Part 1 and Part 2 corresponding to the CSI-RS resource ID indicated by the M-M R CRI is stored. The CSI priority corresponding to the CSI-RS resource ID1 is higher than the M-M RCSI Part 1 priority of the CSI-RS resource ID indicated by the CRI. CSI Part 2 priority of the CSI-RS resource ID 1 is higher than M-M R CSI Part 2 priority of the CSI-RS resource ID indicated by the CRI. CSI Part 1 priority of the CSI-RS resource ID 1 is higher than M-M R CSI Part 1 priority of the CSI-RS resource ID indicated by the CRI. CSI Part 2 priority of the CSI-RS resource ID 1 is lower than M-M R CSI Part 1 priority of the CSI-RS resource ID indicated by the CRI.

[0515] If M-M R CSI-RS resource ID indicated by the CRI is CSI-RS resource ID 3. The CSI priority can be defined as:

[0516] CSI part1 of CSI-RS resource ID 1 > CSI part2 of CSI-RS resource ID 1 > CSI part1 of CSI-RS resource ID 3 > CSI part2 of CSI-RS resource ID 3. Or

[0517] CSI part1 of CSI-RS resource ID 1 > CSI part1 of CSI-RS resource ID 3 > CSI part2 of CSI-RS resource ID 1 > CSI part2 of CSI-RS resource ID 3.

[0518] The storage method in the embodiments of the present disclosure can guarantee certain system performance even when partial CSI is discarded.

[0519] The embodiments of the present disclosure also propose an apparatus for implementing any of the above methods, for example, an apparatus including units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is also proposed, including units or modules for implementing each step performed by a network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0520] It should be understood that the division of each unit or module in the above apparatus is only a logical function division, and all or part of them can be integrated into a physical entity or physically separated in actual implementation. In addition, the units or modules in the apparatus can be implemented in the form of processor calling software: for example, the apparatus includes a processor, the processor is connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to realize any of the above methods or realize the functions of each unit or module of the above apparatus, wherein the processor is a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the apparatus or a memory outside the apparatus. Alternatively, the units or modules in the apparatus can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be realized by the design of hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are realized by the design of the logical relationship of elements in the circuit; for another example, in another implementation, the above hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to realize the functions of part or all of the above units or modules. All units or modules of the above apparatus can be all implemented in the form of processor calling software, or all implemented in the form of hardware circuit, or part implemented in the form of processor calling software and the remaining part implemented in the form of hardware circuit.

[0521] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of a hardware circuit, and the logical relationship of the hardware circuit is fixed or can be reconfigured. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, the hardware circuit can also be designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), or the like.

[0522] FIG. 5a is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 5a, the terminal 5100 can include at least one of a transceiver module 5101, a processing module 5102, and the like. In some embodiments, the transceiver module 5101 is configured to receive configuration information sent by a network device, wherein the configuration information includes at least a first number M of CSI-RS resources for channel state information (CSI) reporting. The processing module 5102 is configured to discard part of CSI corresponding to M CSI-RS resources according to the configuration information and CSI priorities corresponding to the M CSI-RS resources when an uplink transmission resource is limited. The transceiver module 5101 is configured to report remaining CSI corresponding to the M CSI-RS resources to the network device.

[0523] Optionally, the transceiver module 5101 is configured to perform at least one of the communication steps, such as receiving and / or sending, performed by the terminal 101 in any of the above methods, which will not be described herein. Optionally, the processing module 5102 is configured to perform at least one of the other steps performed by the terminal 101 in any of the above methods, which will not be described herein.

[0524] FIG. 5b is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 5b, the network device 5200 can include at least one of a transceiver module 5201, a processing module 5202, and the like. In some embodiments, the transceiver module 5201 described above is configured to send configuration information to the terminal, wherein the configuration information at least includes a first number M of CSI-RS resources for CSI reporting; and the transceiver module 5201 is further configured to receive remaining CSI corresponding to the M CSI-RS resources, wherein the remaining CSI corresponding to the M CSI-RS resources is obtained by the terminal discarding part of CSI corresponding to the M CSI-RS resources according to the configuration information and CSI priorities corresponding to the M CSI-RS resources when uplink transmission resources are limited.

[0525] In some embodiments, the transceiver module can include a sending module and / or a receiving module, and the sending module and the receiving module can be separate or integrated together. Optionally, the transceiver module can be mutually replaced with a transceiver.

[0526] In some embodiments, the processing module can be one module or can include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required to be performed by the processing module. Optionally, the processing module can be mutually replaced with a processor.

[0527] FIG. 6a is a structural schematic diagram of a communication device 6100 according to an embodiment of the present disclosure. The communication device 6100 can be a network device (for example, an access network device, a core network device, and the like), a terminal (for example, a user equipment, and the like), a chip, a chip system, or a processor supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 6100 can be used to implement the methods described in the above method embodiments, and details can be referred to the descriptions in the above method embodiments.

[0528] As shown in FIG. 6a, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general-purpose processor or a special-purpose processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (for example, a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, and the like), execute programs, and process data of the programs. Optionally, the communication device 6100 is configured to execute any of the above methods. Optionally, the one or more processors 6101 are configured to invoke instructions to cause the communication device 6100 to execute any of the above methods.

[0529] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps of sending and / or receiving in the above-described methods, and the processor 6101 performs at least one of the other steps. In alternative embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Alternatively, the terms transceiver, transceiving unit, transceiver, transceiving circuit, interface circuit, interface, etc. can be replaced by each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0530] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Alternatively, all or part of the memory 6103 can also be outside the communication device 6100. In alternative embodiments, the communication device 6100 can include one or more interface circuits 6104. Alternatively, the interface circuit 6104 is connected with the memory 6103, and the interface circuit 6104 can be used to receive data from the memory 6103 or other devices, and can be used to send data to the memory 6103 or other devices. For example, the interface circuit 6104 can read the data stored in the memory 6103 and send the data to the processor 6101.

[0531] The communication device 6100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 can not be limited by Figure 6a. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally include storage components for storing data, programs; (3) an ASIC, such as a Modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0532] Figure 6b is a structural schematic diagram of a chip 6200 according to an embodiment of the present disclosure. For the case where the communication device 6100 is a chip or a chip system, the structural schematic diagram of the chip 6200 shown in Figure 6b can be referred to, but is not limited thereto.

[0533] The chip 6200 includes one or more processors 6201. The chip 6200 is configured to execute any of the above methods.

[0534] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Optionally, the terms interface circuit, interface, transceiver pin, and the like can be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Optionally, all or part of memory 6203 can be external to chip 6200. Optionally, interface circuit 6202 is connected to memory 6203, and interface circuit 6202 can be used to receive data from memory 6203 or other devices, and interface circuit 6202 can be used to send data to memory 6203 or other devices. For example, interface circuit 6202 can read data stored in memory 6203 and send the data to processor 6201.

[0535] In some embodiments, interface circuit 6202 performs at least one of the communication steps such as sending and / or receiving in the above-described methods. The performance of interface circuit 6202 in the communication steps such as sending and / or receiving in the above-described methods means that interface circuit 6202 performs data interaction between processor 6201, chip 6200, memory 6203, or transceiver devices. In some embodiments, processor 6201 performs at least one of the other steps.

[0536] The modules and / or devices described in each of the embodiments of virtual devices, physical devices, chips, and the like can be combined or separated as appropriate. Optionally, part or all of the steps can also be performed by multiple modules and / or devices in cooperation, which is not limited here.

[0537] The disclosure also proposes a storage medium, and the above-mentioned storage medium stores instructions, when the above-mentioned instructions run on communication device 6100, the above-mentioned instructions make communication device 6100 perform any one of the above methods. Optionally, the above-mentioned storage medium is an electronic storage medium. Optionally, the above-mentioned storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the above-mentioned storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a transitory storage medium.

[0538] The disclosure also proposes a program product, and the above-mentioned program product is executed by communication device 6100, and the above-mentioned program product makes communication device 6100 perform any one of the above methods. Optionally, the above-mentioned program product is a computer program product.

[0539] The disclosure also proposes a computer program, and when the computer program runs on a computer, the computer program makes the computer perform any one of the above methods. Industrial applicability

[0540] The terminal learns the number of CSI-RS resources configured by the network device for CSI reporting based on the configuration information. In the CSI reporting process, the terminal can report according to the CSI priority corresponding to each CSI-RS resource, and discard the CSI corresponding to the CSI-RS resource with low priority, so as to effectively report the CSI when the uplink transmission resource is limited, and also ensure the integrity of the CSI corresponding to at least part of the CSI-RS resources and the system performance.

Claims

1. A CSI reporting method performed by a terminal, the method comprising: receiving configuration information transmitted by a network device, the configuration information comprising at least a first number M of CSI-RS resources for channel state information (CSI) reporting; discarding part of CSI corresponding to the M CSI-RS resources according to the configuration information and CSI priorities of the M CSI-RS resources; and reporting remaining CSI corresponding to the M CSI-RS resources to the network device. 2.The method of claim 1, wherein the CSI corresponding to the M CSI-RS resources comprises a first part Part 1 and a second part Part 2, wherein the Part 2 corresponds to CSI that is preferentially discarded when an uplink transmission resource is limited. 3.The method of claim 2, wherein the Part 1 comprises wideband channel quality indicator (CQI) and subband CQI of a first transport block (TB) corresponding to x CSI-RS resources, 0≤x≤M; and the Part 2 comprises M CSIs corresponding to the M CSI-RS resources. Group 1, comprising wideband CQI of a first transport block (TB), or comprising wideband CQI and subband CQI of the first TB; Group 2, comprising even subband CQI of the first TB; Group 3, comprising odd subband CQI of the first TB. The CSI corresponding to each CSI-RS resource in the Part 2 comprises the following groups: Group 1, comprising wideband information or precoding matrix indicator (PMI) of Group 0; Group 2, comprising even subband CSI information or PMI of Group 1; 4. The method of claim 3, wherein, The parameter M is not configured in the configuration information R And when x=0, the CSI corresponding to each CSI-RS resource pair in the Part 2 includes the following groups: Group 3, comprising odd subband CSI information or PMI of Group 2. 6.The method of claim 5, wherein the first number N of CSI-RS resources is determined according to a first rule. 7.The method of claim 6, wherein the method further comprises: determining the N CSI-RS resources from the M CSI-RS resources according to a first rule.

5. The method of claim 3 or 4, wherein, The first rule satisfies at least one of the following: The first rule is defined by a protocol or configured by the network device; The first rule is to select the N CSI-RS resources from the M CSI-RS resources according to an index or an identifier of the CSI-RS resources in order; The first rule is to select the N CSI-RS resources from the M CSI-RS resources according to a defined or configured metric value. 10.The method of claim 6, wherein the priority of the CSI corresponding to each CSI-RS resource satisfies: priority of the Group 1> priority of the Group 2> priority of the Group 3. The configuration information does not configure a parameter M R And x=N, N>0; or, the configuration information configures a parameter M R And M R >0. 13.The method of claim 3, wherein Group 0, comprising wideband CQI of a first transport block (TB), or comprising wideband CQI and subband CQI of the first TB; and the CSI corresponding to each CSI-RS resource in the Part 2 comprises the following groups: The parameter M is not configured in the configuration information R and x=N, N>0, the wideband channel quality indication CQI and subband CQI of the first TB corresponding to N CSI-RS resource pairs included in the Part 1.

8. The method of claim 7, wherein, ​ ​ 9. The method of claim 8, wherein, ​ ​ ​ ​ ​ M is configured in the configuration information R and M R > 0, in the Part 1 and / or the Part 2, the priority of the CSI corresponding to the M R CSI-RS resources is higher than the priority of the CSI corresponding to (M-M R ) CSI-RS resources.

11. The method of claim 10, wherein, x = M R .

12. The method of any one of claims 4 to 11, wherein, ​ ​ ​ The parameter M is not configured in the configuration information R and x = 0, the Part 2 includes: ​ ​ Group 0 including wideband information or PMI; Group 1 including even subband CSI information or PMI; Group 2 including odd subband CSI information or PMI.

14. The method of claim 13, wherein, The priority of the CSI corresponding to each CSI-RS resource satisfies: The CSI priority of the 0th group > the CSI priority of the 1st group > the CSI priority of the 2nd group > the CSI priority of the 3rd group.

15. The method of claim 3, wherein, The Part 2 includes the following groups: Group 0 including wideband CQI and / or wideband information corresponding to the M CSI-RS resources, or Group 0; Group 1 including even subband CQI and / or even subband CSI information corresponding to the M CSI-RS resources, or Group 1; Group 2 including odd subband CQI and / or odd subband CSI information corresponding to the M CSI-RS resources, or Group 2; Wherein, the configuration information does not configure the parameter M R and x = 0, or the configuration information does not configure the parameter M R and x = N, N > 0, or the configuration information configures the parameter M R and M R ≥ 0.

16. The method of claim 15, wherein, When parameter M R and M R > 0 are configured, the CSI priority of each group in Part2 satisfies: In the first group, the second group, or the third group, the M R CSI-RS resources correspond to a CSI priority greater than (M The priority of the CSI corresponding to the M CSI-RS resources.

17. The method of claim 16, wherein The priority of each group in the Part 2 is determined according to a second rule, wherein the second rule is the same as or different from the first rule.

18. The method of any one of claims 1 to 17, wherein, The method further includes: determining the priority of the CSI corresponding to the M CSI-RS resources according to a second rule, wherein the second rule is the same as or different from the first rule.

19. The method of claim 17 or 18, wherein, The second rule satisfies at least one of the following: The second rule is to determine the priority of the CSI corresponding to the M CSI-RS resources according to a defined or configured metric value; The second rule is to determine the priority of the CSI corresponding to the M CSI-RS resources in the order of the index or identifier of the CSI-RS resources; The second rule is defined by a protocol or configured by the network device; The second rule is to determine the priority of the CSI corresponding to the M CSI-RS resources according to the order of the indication of each CSI-RS resource in the Part 1.

20. The method of claim 9 or 19, wherein, The metric value is at least one of the following: CQI of the CSI-RS resource; Signal-to-noise and interference ratio SINR of the CSI-RS resource; Rank indication RI of the CSI-RS resource; PMI of the CSI-RS resource.

21. A CSI reporting method performed by a network device, the method comprising: sending configuration information to a terminal, the configuration information including at least a first number M of CSI-RS resources for channel state information CSI reporting; receiving remaining CSI corresponding to M CSI-RS resources reported by the terminal, wherein the remaining CSI corresponding to the M CSI-RS resources is obtained by the terminal discarding part of CSI corresponding to the M CSI-RS resources according to the configuration information and the priority of the CSI corresponding to the M CSI-RS resources.

22. The method of claim 21, wherein The CSI corresponding to the M CSI-RS resources comprises a first part Part 1 and a second part Part 2, wherein the CSI corresponding to the Part 2 is preferentially discarded when the uplink transmission resource is limited.

23. The method of claim 22, wherein, the Part 1 comprises a wideband channel quality indicator CQI and a subband CQI of a first transport block TB corresponding to x CSI-RS resources, 0≤x≤M; the Part 2 comprises M CSIs corresponding to the M CSI-RS resources.

24. The method of claim 23, wherein, The parameter M is not configured in the configuration information R And when x = 0, the CSI corresponding to each CSI-RS resource pair in the Part 2 includes the following groups: a first group, the first group comprising a wideband CQI of the first TB, or comprising a wideband CQI and a subband CQI of the first TB; a second group, the second group comprising even subband CQIs of the first TB; a third group, the third group comprising odd subband CQIs of the first TB.

25. The method of claim 23 or 24, wherein, The CSI corresponding to each of the CSI-RS resources in the Part 2 comprises the following groups: a first group, the first group comprising a wideband information or a PMI of Group 0; a second group, the second group comprising even subband CSI information or a PMI of Group 1; a third group, the third group comprising odd subband CSI information or a PMI of Group 2.

26. The method of claim 25, wherein, The configuration information does not configure a parameter M R and x=N, N>0; or the configuration information configures a parameter M R and M R >0.

27. The method of claim 26, wherein, The parameter M is not configured in the configuration information R and x = N, N > 0, the wideband channel quality indication CQI and subband CQI of the first TB corresponding to N CSI-RS resource pairs included in the Part 1.

28. The method of claim 27, wherein, the N CSI-RS resources are determined from the M CSI-RS resources according to a first rule.

29. The method of claim 28, wherein, the first rule satisfies at least one of the following: the first rule is defined by a protocol or configured by the network device; the first rule is to select the N CSI-RS resources from the M CSI-RS resources according to an index or an identification order of the CSI-RS resources; the first rule is to select the N CSI-RS resources from the M CSI-RS resources according to a defined or configured metric value.

30. The method of claim 26, wherein, M is configured in the configuration information R and M R > 0, in the Part 1 and / or the Part 2, the priority of the CSI corresponding to the M R CSI-RS resources is higher than the priority of the CSI corresponding to the (M-M R ) CSI-RS resources.

31. The method of claim 30, wherein, x = M R .

32. The method of any one of claims 24 to 31, wherein, the priority of the CSI corresponding to each of the CSI-RS resources satisfies: a CSI priority of the first group > a CSI priority of the second group > a CSI priority of the third group.

33. The method of claim 23, wherein, The parameter M is not configured in the configuration information R and x = 0, the Part 2 comprises: a first group, the first group comprising a wideband CQI of the first TB, or comprising a wideband CQI and a subband CQI of the first TB; the CSI corresponding to each of the CSI-RS resources in the Part 2 comprises the following groups: a first group, the first group comprising a wideband information or a PMI of Group 0; a second group, the second group comprising even subband CSI information or a PMI of Group 1; a third group, the third group comprising odd subband CSI information or a PMI of Group 2.

34. The method of claim 33, wherein, the priority of the CSI corresponding to each of the CSI-RS resources satisfies: a CSI priority of the first group > a CSI priority of the second group > a CSI priority of the third group.

35. The method of claim 23, wherein, The Part2 includes the following groups: The first group includes wideband CQI and / or wideband information corresponding to the M CSI-RS resources, or the first group includes Group0; The second group includes even subband CQI and / or even subband CSI information corresponding to the M CSI-RS resources, or the second group includes Group1; The third group includes odd subband CQI and / or odd subband CSI information corresponding to the M CSI-RS resources, or the third group includes Group2; Wherein, the configuration information does not configure the parameter M R and x=0, or the configuration information does not configure the parameter M R and x=N, N>0, or the configuration information configures the parameter M R and M R ≥0.

36. The method of claim 35, wherein, When parameter M R and M R > 0 are configured, the CSI priority of each group in Part2 satisfies: In the first group, the second group, or the third group, the M R CSI-RS resources correspond to a CSI priority greater than the CSI priority corresponding to the (M-MR) CSI-RS resources.

37. The method of claim 36, wherein The CSI priority of each group in the Part2 is determined according to a second rule, wherein the second rule is the same as or different from the first rule.

38. The method of any of claims 21 to 37, wherein The priority of CSI reporting corresponding to the M CSI-RS resources is determined according to a second rule, wherein the second rule is the same as or different from the first rule.

39. The method of claim 37 or 38, wherein, The second rule satisfies at least one of the following: The second rule is to determine the priority of CSI corresponding to the M CSI-RS resources according to a defined or configured metric value; The second rule is to determine the priority of CSI corresponding to the M CSI-RS resources in the order of the index or identifier of the CSI-RS resource; The second rule is defined by a protocol or configured by the network device; The second rule is to determine the priority of CSI corresponding to the M CSI-RS resources according to the order of each CSI-RS resource indicated in the Part1.

40. The method of claim 29 or 39, wherein, The metric value is at least one of the following: CQI of the CSI-RS resource; Signal-to-noise and interference ratio (SINR) of the CSI-RS resource; Rank indication (RI) of the CSI-RS resource; PMI of the CSI-RS resource.

41. A terminal comprising: a transceiver module configured to receive configuration information transmitted by a network device, the configuration information including at least a first number M of CSI-RS resources for channel state information (CSI) reporting; a processing module configured to discard part of CSI corresponding to M CSI-RS resources according to the configuration information and the priority of CSI corresponding to the M CSI-RS resources; and the transceiver module is further configured to report remaining CSI corresponding to the M CSI-RS resources to the network device.

42. A network device comprising: a transceiver module configured to transmit configuration information to a terminal, the configuration information including at least a first number M of CSI-RS resources for channel state information (CSI) reporting; the transceiver module is further configured to receive remaining CSI corresponding to M CSI-RS resources, wherein the remaining CSI corresponding to the M CSI-RS resources is obtained by the terminal discarding part of CSI corresponding to the M CSI-RS resources according to the configuration information and the priority of CSI corresponding to the M CSI-RS resources.

43. A communication device comprising: one or more processors; and The communication device is configured to implement the method of any one of claims 1 to 20, or claims 21 to 40.

44. A communication system including a terminal and a network device, wherein the terminal is configured to implement the method of any one of claims 1 to 20; the network device is configured to implement the method of any one of claims 21 to 40.

45. A storage medium having stored thereon instructions, wherein the instructions, when executed on a communication device, cause the communication device to perform the method of any one of claims 1 to 20, or claims 21 to 40.

46. A program product, wherein the program product, when executed by a communication device, causes the communication device to perform the method of any one of claims 1 to 20, or claims 21 to 40.

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