Terminal, wireless communication method, and base station

Abstract

A terminal according to one embodiment of the present disclosure is characterized by being provided with: a reception unit that receives information relating to channel state information (CSI) resource settings associated with a plurality of channel state information (CSI) resource sets; and a control unit that performs control for transmitting a CSI report indicating a measurement result relating to one or more CSI resource sets selected from the plurality of CSI resource sets. According to one mode of the present disclosure, appropriate overhead reduction / channel estimation / resource utilization can be realized.

Description

Technical Field

[0001] The present disclosure relates to a terminal, a wireless communication method, and a base station in a next-generation mobile communication system. Background Art

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) is standardized for the purpose of further high-speed data rate, low latency, etc. (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel. 10-14) is standardized for the purpose of further increasing capacity and sophistication of LTE (Release (Rel.) 8, 9 of the Third Generation Partnership Project (3GPP (registered trademark))).

[0003] Successor systems of LTE (also known as, for example, 5th generation mobile communication system (5G), 5G+(plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 and later, etc.) are also being studied.

[0004] Prior art literature

[0005] Non-patent literature

[0006] Non-patent document 1: 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the invention

[0007] Problems to be solved by the invention

[0008] Regarding future wireless communication technologies, research is underway to fully utilize artificial intelligence (AI) technologies such as machine learning (ML) for control and management of networks and devices.

[0009] For example, channel state information (Channel State Information Reference Signal (CSI)) feedback that can use beam prediction is being studied.

[0010] However, there is insufficient research on the regulation of CSI in cases where beam prediction can be used. If this research is insufficient, it will be impossible to achieve appropriate overhead reduction / high-precision channel estimation / efficient resource utilization, and there is a concern that the improvement of communication throughput / communication quality will be suppressed.

[0011] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can achieve appropriate overhead reduction / channel estimation / resource utilization.

[0012] Means for solving problems

[0013] A terminal involved in one method of the present disclosure is characterized in that it has: a receiving unit that receives information on CSI resource settings associated with multiple channel state information (CSI) resource sets; and a control unit that controls the sending of a CSI report, which represents measurement results related to one or more CSI resource sets selected from the multiple CSI resource sets.

[0014] Effects of the Invention

[0015] According to one aspect of the present disclosure, appropriate overhead reduction / channel estimation / resource utilization can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram showing an example of a framework for managing AI models.

[0017] Figure 2A as well as Figure 2B This is a diagram showing an example of AI-based beam reporting.

[0018] Figure 3 This is a diagram showing an example of CSI reporting for multi-group beam reporting after Rel.17NR.

[0019] Figure 4A as well as Figure 4BIt is a diagram showing the variation of DL beam prediction in the spatial domain.

[0020] Figure 5 It is a diagram showing the relationship between the relative power and angle between adjacent beams.

[0021] Figure 6 This is a diagram showing an example of grouping of CSI-RS resource sets according to Implementation 1.1.

[0022] Figure 7 This figure shows the relationship between the CSI report configuration and the CSI resource configuration involved in Implementation 1.2.

[0023] Figure 8 This is a diagram showing an example of grouping of CSI-RS resource sets according to Implementation 1.3.

[0024] Fig. 9 This is a diagram showing an example of a CSI reporting operation between a UE and a base station according to Implementation 1.3.

[0025] Fig.10 This is a diagram showing an example of a CSI report according to Implementation 1.3.

[0026] Fig.11 This is a diagram showing an example of grouping of CSI-RS resource sets according to Implementation 1.4.

[0027] Fig.12 This is a diagram showing an example of a CSI reporting operation between a UE and a base station according to Implementation 1.4.

[0028] Fig.13A as well as Fig. 13B This is a diagram showing an example of CSI reporting involved in Implementation 1.4.

[0029] Fig.14 This is a diagram showing an example of resource selection involved in implementation mode 2.1.

[0030] Fig.15A as well as Fig. 15B This is a diagram showing an example of resource selection involved in implementation mode 2.1.1.

[0031] Fig.16 This is a diagram showing an example of CSI reporting involved in Implementation 2.1.

[0032] Fig.17 This is a diagram showing an example of resource selection involved in implementation mode 2.1.5.

[0033] Fig.18 It is a diagram showing resource selection according to a modification example.

[0034] Fig.19 This is a diagram showing an example of resource selection involved in implementation mode 2.2.1.1.

[0035] Fig. 20 This is a diagram showing an example of resource selection involved in implementation mode 2.2.1.2.

[0036] Fig.21 This is a diagram showing another example of resource selection involved in implementation mode 2.2.1.2.

[0037] Fig. 22 This is a diagram showing an example of resource selection involved in implementation mode 2.2.2.

[0038] Fig.23 This is a diagram showing an example of CSI reporting involved in implementation mode 2.2.2.

[0039] Fig.24 This is a diagram showing another example of resource selection involved in implementation mode 2.2.2.

[0040] Fig.25 Indicates the area where the resources involved in implementation mode 3.1 are mapped.

[0041] Figure 26A-26D This is a diagram showing an example of the bit width of the parameters included in the CSI report involved in Implementation 3.3.

[0042] Fig. 27 This is a diagram showing an example of operations between UE and a base station according to the fourth embodiment.

[0043] Fig.28 It is a diagram showing the relationship between the panel of the UE and the SRS resources involved in the fifth embodiment.

[0044] Fig.29 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0045] Fig.30 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0046] Fig.31 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0047] Fig.32 This is a diagram showing an example of the hardware configuration of a base station and a user terminal involved in one embodiment.

[0048] Fig.33 This is a diagram showing an example of a vehicle according to an embodiment. DETAILED DESCRIPTION

[0049] (CSI report or reporting)

[0050] In Rel.15 / 16NR, a terminal (also referred to as a user terminal, user equipment (UE), etc.) generates (also referred to as determining, calculating, estimating, measuring, etc.) channel state information (CSI) based on a reference signal (RS) (or resources used for the RS), and sends (also referred to as reporting, feedback, etc.) the generated CSI to a network (e.g., a base station). The CSI may also be sent to a base station using, for example, an uplink control channel (e.g., a physical uplink control channel (PUCCH)) or an uplink shared channel (e.g., a physical uplink shared channel (PUSCH)).

[0051] The RS used to generate CSI may be, for example, at least one of a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a synchronization signal / broadcast channel (Synchronization Signal / Physical Broadcast Channel (SS / PBCH)) block, a synchronization signal (Synchronization Signal (SS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), etc.

[0052] The CSI-RS may also include at least one of a non-zero power (NZP) CSI-RS and a CSI-Interference Management (CSI-IM). The SS / PBCH block is a block including the SS and the PBCH (and the corresponding DMRS), and may also be referred to as an SS block (SSB), etc. In addition, the SS may also include at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS).

[0053] In addition, CSI may also include at least one of a channel quality indicator (Channel Quality Indicator (CQI)), a precoding matrix indicator (Precoding Matrix Indicator (PMI)), a CSI-RS resource indicator (CSI-RSResource Indicator (CRI)), a SS / PBCH block resource indicator (SS / PBCH Block Resource Indicator (SSBRI)), a layer indicator (Layer Indicator (LI)), a rank indicator (Rank Indicator (RI)), L1-RSRP (reference signal received power in layer 1 (layer 1 reference signal received power (Layer 1 Reference Signal Received Power))), L1-RSRQ (reference signal received quality (Reference Signal Received Quality)), L1-SINR (signal to interference plus noise ratio (Signal to Interference plus Noise Ratio)), L1-SNR (signal to noise ratio (Signal to Noise Ratio)), etc.

[0054] The UE may also receive information related to CSI reporting (report configuration information) and control CSI reporting based on the report configuration information. The report configuration information may also be, for example, "CSI-ReportConfig" of the information element (IE) of the Radio Resource Control (RRC). In addition, in the present disclosure, the RRC IE may also be mutually rewritten with RRC parameters, high-layer parameters, etc.

[0055] The report configuration information (eg, "CSI-ReportConfig" of RRC IE) may also include at least one of the following.

[0056] Information related to the type of CSI report (report type information, e.g., "reportConfigType" of RRC IE)

[0057] Information related to one or more quantities of CSI to be reported (one or more CSI parameters) (report quantity information, for example, "reportQuantity" of RRC IE)

[0058] Information related to the RS resource used to generate the quantity (the CSI parameter) (resource information, for example, "CSI-ResourceConfigId" of RRCIE)

[0059] Information related to the frequency domain that is the subject of CSI reporting (frequency domain information, for example, "reportFreqConfiguration" of RRC IE)

[0060] For example, the report type information may also indicate a periodic CSI (Periodic CSI (P-CSI)) report, an aperiodic CSI (Aperiodic CSI (A-CSI)) report, or a semi-permanent (semi-persistent, semi-persistent (Semi-Persistent)) CSI (Semi-Persistent CSI (SP-CSI)) report.

[0061] In addition, the reporting amount information may also specify a combination of at least one of the above-mentioned CSI parameters (e.g., CRI, RI, PMI, CQI, LI, L1-RSRP, etc.).

[0062] In Rel. 15 / 16 / 17, the CRI / SSBRI field is determined based on the number of CSI-RS resources or the number of SS / PBCH blocks in a resource set.

[0063] In addition, in Rel. 17, information related to the panel corresponding to CRI / SSBRI / L1-RSRP / L1-SINR is included in the CSI report. This information may also be called a capability index (Capability Index) and has a bit width of 2 bits.

[0064] (Application of Artificial Intelligence (AI) technology to wireless communications)

[0065] Regarding future wireless communication technologies, research is underway into using AI technologies such as machine learning (ML) to control and manage networks and devices.

[0066] For example, the use of AI technology in terminals (terminal, user terminal, user equipment (UE)) / base stations (Base Station (BS)) is being studied to improve channel state information (Channel State Information Reference Signal (CSI)) feedback (e.g., overhead reduction, accuracy improvement, prediction), beam management (e.g., accuracy improvement, prediction in the time domain / spatial domain), and position measurement (e.g., improvement in position estimation / prediction).

[0067] The AI ​​model may also output at least one of an estimated value, a predicted value, a selected operation, a classification, etc. based on the input information. The UE / BS may also input channel state information, reference signal measurement values, etc. into the AI ​​model, and output high-precision channel state information / measurement values / beam selection / position, future channel state information / radio link quality, etc.

[0068] In addition, in the present disclosure, AI can also be rewritten as an object (also referred to as an object, object, data, function, program, etc.) having (implementing) at least one of the following characteristics:

[0069] estimates based on observed or collected information,

[0070] · Selection based on observed or collected information,

[0071] Predictions based on observed or collected information.

[0072] In the present disclosure, estimation, prediction, and inference may be replaced by each other. In addition, in the present disclosure, estimation, prediction, and inference may be replaced by each other.

[0073] In the present disclosure, an object may also be, for example, a device such as a UE or a BS, or a device, etc. In addition, in the present disclosure, an object may also be equivalent to a program / model / entity operating in the device.

[0074] In addition, in the present disclosure, the AI ​​model may also be rewritten as an object having (implementing) at least one of the following features:

[0075] Creating estimates by feeding information,

[0076] By providing information, forecasting estimates,

[0077] ·Discover features by providing information,

[0078] · Select an action by providing information.

[0079] In addition, in the present disclosure, an AI model may also refer to a data-driven algorithm that applies AI technology to generate a set of outputs based on a set of inputs.

[0080] In addition, in the present disclosure, AI models, models, ML models, predictive analytics, predictive analytics models, tools, autoencoders (autoencoders), encoders, decoders, neural network models, AI algorithms, etc. can also be rewritten one from another. In addition, the AI ​​model can also be derived using at least one of regression analysis (e.g., linear regression analysis, multiple regression analysis, logistic regression analysis), support vector machine, random forest, neural network, deep learning, etc.

[0081] In the present disclosure, the autoencoder can also be rewritten with any autoencoder such as stacked autoencoder, convolutional autoencoder, etc. The encoder / decoder of the present disclosure can also adopt residual network (ResidualNetwork (ResNet)), DenseNet, RefineNet and other models.

[0082] In addition, in the present disclosure, encoder, encoding, encoding / encoded, correction / change / control based on encoder, compression, compression / compressed, generating, generating / generated, etc. can also be rewritten to each other.

[0083] In addition, in the present disclosure, decoder, decoding, decoding / decoding, correction / change / control based on the decoder, decompression, decompression / decompressed, reconstruction, reconstruction / reconstruction, etc. can also be rewritten to each other.

[0084] In the present disclosure, the layers (about the AI ​​model) may also be mutually rewritten with the layers (input layer, intermediate layer, etc.) used in the AI ​​model. The layers of the present disclosure may also be equivalent to at least one of the input layer, intermediate layer, output layer, batch normalization layer, convolution layer, activation layer, dense layer, normalization layer, pooling layer, attention layer, dropout layer, fully connected layer, etc.

[0085] In the present disclosure, the training method of the AI ​​model may also include supervised learning, unsupervised learning, reinforcement learning, federated learning, etc. Supervised learning may also refer to the process of training a model based on input and corresponding labels. Unsupervised learning may also refer to the process of training a model without labeled data. Reinforcement learning may also refer to the process of training a model based on input (in other words, state) and feedback signals (in other words, rewards) generated from the output (in other words, actions) of the model in an environment where the model interacts.

[0086] In the present disclosure, generation, calculation, and export may also be mutually replaced. In the present disclosure, implementation, application, operation, and execution may also be mutually replaced. In the present disclosure, training, learning, updating, and retraining may also be mutually replaced. In the present disclosure, reasoning, after-training, formal utilization, and actual utilization may also be mutually replaced. In the present disclosure, signal may also be mutually replaced with signal / channel.

[0087] Figure 1 This is a diagram showing an example of a framework for managing an AI model. In this example, each stage associated with an AI model is represented by a block. This example also represents the lifecycle management of an AI model.

[0088] The data collection phase is equivalent to the phase of collecting data for the generation / update of AI models. The data collection phase may also include data collation (e.g., the decision of which data to migrate for model training / model inference), data migration (e.g., migrating data to entities that perform model training / model inference (e.g., UE, gNB)), etc.

[0089] In addition, data collection may also mean: the process of collecting data by a network node, management entity or UE for the purpose of AI model training / data analysis / inference. In the present disclosure, processing and process may also be rewritten to each other.

[0090] In the model training phase, model training is performed based on the data (training data) migrated from the collection phase. This phase may also include data preparation (e.g., implementation of data preprocessing, cleaning, formatting, conversion, etc.), model training / validation (validation), model testing (e.g., confirming whether the trained model meets the performance threshold), model exchange (e.g., migration of models for distributed learning), model deployment / update (deployment / update of models to entities that perform model reasoning), etc.

[0091] In addition, AI model training may also refer to the process of training an AI model through a data-driven approach to obtain a trained AI model for reasoning.

[0092] In addition, AI model validation can also mean a sub-process of training for evaluating the quality of an AI model using a dataset different from the one used in model training. This sub-process helps select model parameters that generalize beyond the dataset used in model training.

[0093] In addition, AI model testing can also mean: a sub-process of training for evaluating the performance of the final AI model using a different dataset from the one used in model training / validation. In addition, testing is different from validation and may not be based on subsequent model tuning.

[0094] In the model reasoning phase, model reasoning is performed based on the data (reasoning data) migrated from the collection phase. This phase may also include data preparation (e.g., implementation of data preprocessing, cleaning, formatting, conversion, etc.), model reasoning, model monitoring (e.g., monitoring the performance of model reasoning), model performance feedback (feedback model performance to entities performing model training), output (providing model output to actors), etc.

[0095] In addition, AI model inference can also mean the process of using a trained AI model to produce a set of outputs based on a set of inputs.

[0096] In addition, the UE side model may also refer to an AI model whose reasoning is fully implemented in the UE. The network side model may also refer to an AI model whose reasoning is fully implemented in the network (e.g., gNB).

[0097] In addition, a one-sided model may also refer to a UE-side model or a network-side model. A two-sided model may also refer to a paired AI model that performs joint inference. Here, joint inference may also include AI inferences that are jointly performed across UE and network, for example, the first part of the inference may be performed by the UE first, and the remaining part may be performed by the gNB (or vice versa).

[0098] In addition, AI model monitoring can also refer to the processing used to monitor the reasoning performance of the AI ​​model, and can also be interchanged with model performance monitoring, performance monitoring, etc.

[0099] In addition, model registration can also mean: assigning a version identifier to the model, making the model executable by compiling it in the specific hardware used in the inference phase. In addition, model deployment can also mean: distributing the runtime image (or image of the execution environment) of the fully developed and tested model to (or activating in) the target (e.g., UE / gNB) where inference is performed.

[0100] The actor phase may also include action triggers (e.g., deciding whether to trigger an action on other entities), feedback (e.g., feeding back training data / inference data / information required for performance feedback), etc.

[0101] In addition, training of models for mobility optimization, for example, can also be performed in operation, administration and maintenance (OAM) / gNodeB (gNB) in the network (NW). In the former case, interoperability, large-capacity storage, operator manageability, model flexibility (feature engineering, etc.) are advantageous. In the latter case, the point that latency for model update and data exchange for model decompression are not required is advantageous. Reasoning of the above model can also be performed in the gNB, for example.

[0102] The entity doing the training / inference can also vary depending on the use case (in other words, the function of the AI ​​model). The functions of the AI ​​model can also include beam management, beam prediction, autoencoder (or information compression), position localization, etc.

[0103] For example, regarding AI-assisted beam management based on measurement reports, OAM / gNB can also perform model training and gNB can perform model inference.

[0104] Regarding AI-assisted UE-assisted positioning, the Location Management Function (LMF) can also perform model training, and the LMF performs model reasoning.

[0105] Regarding CSI feedback / channel estimation using autoencoders, it can also be that OAM / gNB / UE performs model training, and gNB / UE (jointly) performs model inference.

[0106] Regarding AI-assisted beam management based on beam measurement or AI-assisted UE-based positioning, OAM / gNB / UE can also perform model training and UE can perform model inference.

[0107] In addition, model activation may also mean activating an AI model for a specific function. Model deactivation may also mean deactivating an AI model for a specific function. Model switching may also mean deactivating a currently activated AI model for a specific function and activating a different AI model.

[0108] In addition, model transfer may also mean the distribution of AI models over the air interface. The distribution may also include distributing one or both of the parameters of a known model structure or a new model with parameters in the receiving side. In addition, the distribution may also include a complete model or a partial model. Model download may also mean model migration from the network to the UE. Model upload may also mean model migration from the UE to the network.

[0109] (Beam prediction based on the AI ​​model on the NW side)

[0110] In future wireless communication systems (for example, after Rel.18), the introduction of beam management accompanied by beam prediction is being studied. In addition, as a use case for the utilization of AI models, spatial domain downlink (DL) beam prediction or temporal DL beam prediction using a unilateral AI model in UE or NW is being studied. Such a beam prediction method may also be referred to as AI-based beam prediction (beam reporting), AI-based beam management (BeamManagement (BM)), etc. In the present disclosure, beam prediction using an AI model on the NW side is exemplified.

[0111] Spatial domain DL beam prediction and temporal DL beam prediction and temporal domain beam prediction may also be implemented in at least one of the UE and the base station.

[0112] Figure 2A And 2B is a diagram showing an example of AI-based beam reporting. Figure 2A Indicates spatial domain DL beam prediction. The UE / base station can also measure spatially sparse (or coarse) beams, input the measurement results into the AI ​​model, and output the prediction results of the beam quality of spatially dense (or thin) beams.

[0113] Figure 2B Indicates DL beam prediction over time. The UE / base station can also measure the beams in a time series, input the measurement results into the AI ​​model, and output the prediction results of the beam quality of the future beams.

[0114] In addition, spatial domain DL beam prediction may also be referred to as BM case 1, and temporal DL beam prediction may also be referred to as BM case 2.

[0115] In addition, the beam associated with the output (prediction result) of the AI ​​model may also be referred to as a set of beams A. The beam associated with the input of the AI ​​model may also be referred to as a set of beams B.

[0116] Furthermore, in the above-mentioned BM case 1 and BM case 2, the beam set A and the beam set B may be of the same frequency band.

[0117] Candidates for the input of the AI ​​model for BM scenario 1 / 2 include L1-RSRP (reference signal received power in layer 1 (Layer 1 Reference Signal Received Power)), auxiliary information (for example, beam shape information, UE position / direction information, transmit beam usage information), channel impulse response (Channel Impulse Response (CIR)) information, corresponding DL transmit / receive beam ID, etc.

[0118] Candidates for the output of the AI ​​model of BM scenario 1 include the IDs of the top K (K is an integer) transmit / receive beams, the predicted L1-RSRP of these beams, the probability of each beam entering the top K, the angles of these beams, etc.

[0119] In addition to the candidates for the output of the AI ​​model in BM case 1, the candidates for the output of the AI ​​model in BM case 2 may include predicted beam failure.

[0120] In the present disclosure, the so-called sparse (or thick / wide) beam may also refer to a beam (mode) sparsely distributed in a space / angle region. In addition, the so-called dense (or thin / narrow) beam may also refer to a beam (mode) densely distributed in a space / angle region.

[0121] In the present disclosure, the input / output information of the AI ​​model (for example, the measurement results of the above-mentioned beams and the prediction results of the beam quality, etc.) may also be referred to as AI model information.

[0122] (Group-based beam reporting)

[0123] For future wireless communication systems (e.g., Rel.17 and later), research is underway on extensions of beam management associations for user terminals (user terminal, User Equipment (UE)) with multiple panels (multi-panel), multiple transmission / reception points (multi-transmission / reception point (TRP)), etc. (e.g., also referred to as beam reports suitable for multiple TRPs, extended group-based beam reports).

[0124] Group-based beam reporting can report a group of multiple (for example, 2) CRI / SSBRIs in one report, so it is suitable for situations where multi-TRP transmission, multi-panel reception, etc. are applied. For example, it can be used to report the best beam of TRP1 as RSRP#1 and the best beam of TRP2 as differential RSRP#2.

[0125] In Rel.15 and 16, a UE with group-based beam reporting enabled can only report one group including two different CRI / SSBRIs (which can also be rewritten as beam indices) for each reporting setting. Therefore, for Rel.17, it is envisaged to expand the number of groups that can be reported through group-based beam reporting.

[0126] For example, two resource sets for channel measurement (e.g., CMR sets) can also be set / triggered as periodic / semi-persistent / aperiodic resource types. Two resource sets for channel measurement (e.g., CMR sets) can also be, for example, two CSI-SSB-resource sets / two NZP-CSI-RS-resource sets. The UE can also be set to be able to report a maximum of 4 CRI / SSBRI groups. In addition, the number of groups that can be reported (or, the number of candidates 1 / 2 / 3 / 4) can also be set by higher-level parameters (e.g., nrofReportedGroups).

[0127] Alternatively, each group may have multiple (e.g., 2) CRI / SSBRIs, and the CRI / SSBRI of each group may be selected from two CSI resource sets (CSI-SSB-resource set / NZP-CSI-RS-resource set) used in a report setting (e.g., report setting). In addition, the two CRI / SSBRIs of each group may also mean that the UE can receive simultaneously (e.g., receive simultaneously using one spatial domain reception filter).

[0128] Figure 3 FIG. 1 is a diagram showing an example of CSI reporting when extended group-based beam reporting is performed. Figure 3 , the mapping order of CSI fields included in one report (eg, the nth CSI report #n) for group-based CSI / RSRP or SSBRI / RSRP reporting is shown.

[0129] The CSI report may also include a maximum of X (eg, X=4) resource groups. Each group includes multiple (eg, 2) CRI / SSBRIs. Here, as each resource group, a case where CRI or SSBRI#1 and CRI or SSBRI#2 are reported is shown.

[0130] A resource set indicator (e.g., Resource set indicator) may also be included in the CSI field. The CSI resource set associated with the maximum measured value of L1-RSRP may also be indicated by the value of the resource set indicator. The CSI resource set reporting the CRI or SSBRI#1 of the first resource group may also be indicated by the value of the resource set indicator. For example, a 1-bit resource set indicator having a value of 0 or 1 may also indicate the first or second CSI resource set, respectively, from which the CRI or SSBRI#1 of the first resource group is reported. All remaining resource groups (e.g., in the presence of other resource groups being reported) follow the same mapping order as the first resource group. For example, the CRI or SSBRI#1 of all remaining resource groups may also be reported (or selected) from the CSI resource set indicated by the resource set indicator.

[0131] That is, the CRI or SSBRI #1 of each group may be reported (or selected) from the CSI resource set indicated by the resource set indicator (e.g., Resource set indicator), and the CRI or SSBRI #2 may be reported (or selected) from other CSI resource sets. In this way, in all resource groups, CRI or SSBRI #1 and CRI or SSBRI #2 may be reported from different CSI resource sets.

[0132] In addition, the RSRP corresponding to the beam index (e.g., CRI or SSBRI) of each resource group is reported. For example, the RSRP of the CRI or SSBRI of a specific group may be reported, and the difference from the RSRP of the CRI or SSBRI of the specific group may be reported for other RSRPs. The RSRP of the CRI or SSBRI of a specific group may also be the RSRP of the CRI or SSBRI#1 of the first resource group.

[0133] The extended group-based beam reporting may also be set (or set to be valid / activated) by a specific higher-level parameter (e.g., groupBasedBeamReporting-r17). Alternatively, it may be determined that the extended group-based beam reporting is valid when a higher-level parameter related to the number of reported groups (e.g., nrofReportedGroups-r17) is set.

[0134] (Mode of DL beam prediction in spatial domain)

[0135] As illustrated in FIG. 2 , in spatial domain DL beam prediction (BM case 1), optimal beam estimation can be performed based on the measurement results (CSI reports) of spatially sparse beams.

[0136] Figure 4A as well as Figure 4B This is a diagram showing changes in spatial domain DL beam prediction. In a case where the channel between the base station and the UE is composed of multiple transmission paths (multipaths) (for example, in a non-line of sight (NLOS) case), by using the measurement results of multiple beams oriented in all directions (the shape of the directional beam forms a radial shape) as shown in the figure as input, beam prediction covering a wide range can be performed with fewer beam measurement results. The measurement results used as input do not necessarily include the measurement results of the optimal beam. In such a multipath environment, a method for determining / selecting CRI / SSBRI that covers a wide space is effective.

[0137] On the other hand, in the case where the channel consists of multiple paths, if the Figure 4B If the measurement results of a plurality of beams (adjacent beams) having directivity in a certain direction as shown are taken as input, it is difficult to perform appropriate beam prediction.

[0138] Based on Figure 4B Such overlapping (overlapping) measurement results of multiple beams (adjacent beams) are suitable for beam prediction in the case of a dominant transmission path (dominant path) where the channel is biased in one direction (for example, Line Of Site (LOS)). Based on the measurement results of at least two adjacent beams, the angle of the beam can be estimated.

[0139] Figure 5 This is a graph showing the relationship between the relative power and angle between adjacent beams. The horizontal axis represents the angle of the beam, and the vertical axis represents the received power of the beam. Figure 5 In the figure, it is shown that Figure 4B As described in , at least two adjacent beams (RS resource #i, RS resource #i+1) overlap. Figure 5 , the relative power between adjacent beams can be calculated based on the respective received powers of the two adjacent beams, and the angle of the corresponding beam can be estimated based on the relative power. In such a main path environment, a method for determining / selecting CRI / SSBRI (corresponding to an adjacent beam) for predicting a beam having directivity in a certain direction is effective.

[0140] However, as mentioned above, when the AI / ML model is used for beam prediction in the NW (base station), research is underway to report the beam information on the UE side (for example, CSI measured using the beam) to the NW.

[0141] However, the provisions of CSI in situations where beam prediction can be used have not been fully studied. For example, the implementation method of reporting beam reports (CSI reports) including CRI / SSBRI corresponding to beams covering a wide space for multipath environments such as those described above and CRI / SSBRI corresponding to overlapping beams for main path environments has not been studied. If these studies are insufficient, appropriate overhead reduction / high-precision channel estimation / efficient resource utilization cannot be achieved, and there is a concern that the improvement of communication throughput / communication quality will be suppressed.

[0142] Therefore, the inventors of the present invention have conceived a method of CSI feedback that can correspond to the directivity (radiation pattern) of multiple beams. In addition, each embodiment of the present disclosure can also be applied to a case where AI / prediction is not used.

[0143] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the embodiments may be applied individually or in combination.

[0144] In the present disclosure, "A / B" and "at least one of A and B" may be replaced with each other. In addition, in the present disclosure, "A / B / C" may also mean "at least one of A, B, and C".

[0145] In the present disclosure, activate, deactivate, indicate (or specify), select, configure, update, determine, etc. may also be mutually rewritten. In the present disclosure, support, control, controllable, operate, and operate may also be mutually rewritten.

[0146] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, high-layer parameters, fields, Information Element (IE), settings, etc. may also be overwritten with each other. In the present disclosure, Medium Access Control (MAC) control elements (MAC Control Element (CE)), update commands, activation / deactivation commands, etc. may also be overwritten with each other.

[0147] In the present disclosure, high-layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, positioning protocol (e.g., LTE Positioning Protocol (LPP)) message, or any one or a combination of these.

[0148] In the present disclosure, MAC signaling may also use, for example, MAC Control Element (MACCE), MAC Protocol Data Unit (MAC Protocol Data Unit (PDU)), etc. Broadcast information may also be, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (Other System Information (OSI)), etc.

[0149] In the present disclosure, the physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI)), etc.

[0150] In the present disclosure, index, identifier (ID), indicator, resource ID, etc. may also be mutually overwritten. In the present disclosure, sequence, list, set, group, cluster, subset, etc. may also be mutually overwritten.

[0151] In the present disclosure, panel, UE panel, panel group, beam, beam group, precoder, uplink (UL) transmission entity, transmission / reception point (TRP)), base station, spatial relationship information (Spatial Relation Information (SRI)), spatial relationship, SRS resource indicator (SRS Resource Indicator (SRI)), control resource set (COntrol REsource SET (CORESET)), physical downlink shared channel (Physical Downlink Shared Channel (PDSCH)), codeword (Codeword (CW)), transport block (Transport Block (TB)), reference signal (Reference Signal (RS)), antenna port (e.g., demodulation reference signal (DeModulation Reference Signal (DMRS)) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relationship group, code division multiplexing (Code Division Multiplexing (CDM)) group, reference signal group, CORESET group, physical uplink control channel (Physical Uplink Control Channel (PUCCH)) group, PUCCH resource group), resources (for example, reference signal resources, SRS resources), resource sets (for example, reference signal resource sets), CORESET pool, downlink transmission configuration indication state (Transmission Configuration Indication state) (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state (unified TCI state), common TCI state (common TCI state), Quasi-Co-Location (Quasi-Co-Location (QCL)), QCL assumptions, etc. can also be rewritten with each other.

[0152] In the present disclosure, CSI-RS, non-zero power (NZP) CSI-RS, zero power (ZP) CSI-RS and CSI interference measurement (CSI-IM)) can also be replaced with each other. In addition, CSI-RS can also include other reference signals.

[0153] In the present disclosure, the measured / reported RS may also mean the RS measured / reported for CSI reporting.

[0154] In the present disclosure, timing, moment, time, time instance, time slot, sub-slot, codeword, subframe, etc. can also be rewritten to each other.

[0155] In the present disclosure, direction, axis, dimension, domain, polarization, polarization component, etc. can also be rewritten mutually.

[0156] In the present disclosure, RS may be, for example, CSI-RS, SS / PBCH block (SS block (SSB)), etc. In addition, RS index may be CSI-RS resource indicator (CSI-RS Resource Indicator (CRI)), SS / PBCH block resource indicator (SS / PBCH block indicator (SS / PBCH Block Indicator (SSBRI))), etc.

[0157] In the present disclosure, channel measurement / estimation can also be performed using at least one of the Channel State Information Reference Signal (CSI-RS), the Synchronization Signal (SS), the Synchronization Signal / Broadcast Channel (Synchronization Signal / Physical Broadcast Channel (SS / PBCH)) block, the DeModulation Reference Signal (DMRS)), and the Measurement Reference Signal (Sounding Reference Signal (SRS)).

[0158] In the present disclosure, CSI may also include at least one of a channel quality indicator (Channel Quality Indicator (CQI)), a precoding matrix indicator (Precoding Matrix Indicator (PMI)), a CSI-RS resource indicator (CSI-RS Resource Indicator (CRI)), a SS / PBCH block resource indicator (SS / PBCH Block Resource Indicator (SSBRI)), a layer indicator (Layer Indicator (LI)), a rank indicator (Rank Indicator (RI)), L1-RSRP (reference signal received power in layer 1 (Layer 1 Reference Signal Received Power)), L1-RSRQ (reference signal received quality (Reference Signal Received Quality)), L1-SINR (signal to interference plus noise ratio (Signal to Interference plus Noise Ratio)), L1-SNR (signal to noise ratio (Signal to Noise Ratio)), information related to the channel matrix (or channel coefficient), information related to the precoding matrix (or precoding coefficient), etc.

[0159] In the present disclosure, UCI, CSI report, beam report, CSI feedback, feedback information, feedback bit, etc. may also be replaced by each other. In addition, in the present disclosure, bit, bit string, bit sequence, sequence, value, information, value obtained from bit, information obtained from bit, etc. may also be replaced by each other.

[0160] In the following embodiments, the AI ​​model related to the communication between UE and BS is described, so the associated subjects are UE and BS, but the application of the embodiments of the present disclosure is not limited to this. For example, for communication between other subjects (for example, communication between UE and UE), the UE and BS in the following embodiments can also be rewritten as the first UE and the second UE. In other words, the UE, BS, etc. of the present disclosure can be rewritten as any UE / BS.

[0161] In the present disclosure, CSI-RS resources (CSI resources) may also include at least one of non-zero power (Non Zero Power (NZP)) CSI-RS resources, zero power (Zero Power (ZP)) CSI-RS resources, and CSI interference measurement (CSI Interference Measurement (CSI-IM)) resources.

[0162] In the present disclosure, the resource for measuring the signal component for CSI may also be referred to as a signal measurement resource (SMR) or a channel measurement resource (CMR). SMR (CMR) may also include, for example, an NZP CSI-RS resource / SSB for channel measurement.

[0163] The resource used for measuring the interference component for CSI may also be referred to as an interference measurement resource (Interference Measurement Resource (IMR)). For example, the IMR may also include at least one of an NZP CSI-RS resource, an SSB, a ZP CSI-RS resource, and a CSI-IM resource used for interference measurement.

[0164] In the following embodiments, CSI-RS may also be mutually overwritten with SSB. In this case, NZP-CSI-RS-resource set may also be mutually overwritten with CSI-SSB-resource set, and CRI / CSI-RS resource ID may also be mutually overwritten with SSBRI / SSB index. In addition, in the present disclosure, resource set may also be any one of CSI resource set and CSI-SSB resource set. More specifically, RRC information elements NZP-CSI-RS-ResourceSet and CSI-SSB-ResourceSet may also be mutually overwritten.

[0165] In addition, in the following embodiments, the CSI-RS resource set may include a CMR set, an IMR set, or other measurement resource sets. In addition, the CSI-RS resource set in the following embodiments may also be equivalent to a CSI-RS resource set for L1-RSRP / SINR measurement (or reporting). In addition, in the following embodiments, RSRP and SINR may also be rewritten to each other.

[0166] (Wireless Communication Method)

[0167] <First embodiment>

[0168] The first embodiment relates to grouping of RSs.

[0169] [Implementation method 1.1]

[0170] In implementation mode 1.1, the case where one or more (or multiple) CSI-RS resource sets (CSI resource sets) are grouped into one CSI resource setting (CSI Resource Setting) (which may also be mutually rewritten with the CSI resource setting (or RRC information element CSI-ResourceConfig)) is described.

[0171] The UE may be configured with one or more CSI resource sets (for example, a resource set for channel measurement (Channel Measurement Resource (CMR) set)) for each CSI resource setting.

[0172] Figure 6 is a diagram showing an example of grouping of CSI resource sets involved in Implementation 1.1. Figure 6 In the figure, each CSI resource set (resource set ID (ResourceSetID) #1-#3) is set with multiple (for example, 3) resources (resource ID (ResourceID) #1-#3). In addition, the three resource sets shown in the figure are associated with a CSI resource setting (through a list in the CSI resource setting (for example, csi-RS-resource set list (csi-RS-ResourceSetList))).

[0173] According to embodiment 1.1, multiple (for example, three) CSI resource sets can be set for one CSI resource. That is, for example, CSI-RS resource sets can be grouped for spatial domain DL beam prediction. More specifically, Figure 4A Such multiple beams that can cover a wide area, Figure 4B The CSI resource sets (CSI resource sets) corresponding to the adjacent multiple beams are grouped. Thus, the UE can make the desired CSI report to the base station. On the other hand, the base station can receive measurement results suitable for spatial domain DL beam prediction from the UE.

[0174] Embodiment 1.1 can be applied to periodic or semi-persistent CSI resource configuration. The configuration related to grouping can be performed based on the information described later (the information described in <Supplement>, such as a specific RRC parameter).

[0175] [Implementation method 1.2]

[0176] In implementation 1.2, grouping in non-periodic CSI resource configuration is described.

[0177] In the case of aperiodic CSI reporting, the UE may also be configured with RRC parameters associated with one or more (or multiple) CSI resource sets (e.g., CSI-AperiodicTriggerState or CSI-AssociatedReportConfigInfo). A trigger state (CSI-AperiodicTriggerState) may also include a list of associated CSI report settings (CSI report settings (or RRC information element CSI-ReportConfig)).

[0178] Figure 7 1.2 is a diagram showing the relationship between the CSI report configuration and the CSI resource configuration involved in implementation mode 1.2. Figure 7 As shown, the CSI request field included in the DCI can indicate a certain triggering state. Figure 7 In the example, the trigger state is associated with one or more CSI reporting settings (e.g., reporting settings #1-#4) (Reporting setting #3 in the figure). Figure 7 In the example, a certain CSI reporting setting (Reporting setting #3) may also be associated with multiple CSI resource sets (CSI-RS resource sets #0-#2). In this case, multiple CSI resource sets may be grouped into one CSI resource setting (Reporting setting #1).

[0179] As such, for aperiodic CSI reporting, CSI resource sets can also be grouped, for example, for spatial domain DL beam prediction.

[0180] Embodiment 1.2 can be applied to non-periodic CSI resource configuration. The configuration related to grouping can also be performed based on the information described later (the information described in <Supplement>, such as a specific RRC parameter).

[0181] [Implementation method 1.3]

[0182] In implementation 1.3, reporting of grouped CSI resource settings is described.

[0183] The UE may also select N CRI / SSBRIs from one CSI resource set among multiple CSI resource sets associated with one CSI resource setting or trigger state (CSI-AperiodicTriggerState) and report them through a single reporting instance (CSI report).

[0184] Here, N may also be determined by an RRC parameter (eg, nrofReportedRS). N may be an integer greater than 1 or may include 1, for example.

[0185] Figure 8 is a diagram showing an example of grouping of CSI resource sets involved in implementation mode 1.3. Figure 8 As shown, the UE can select one CSI resource set from a plurality of grouped CSI resource sets (resource set ID (ResourceSetID) #1-#3). In addition, the UE can select N (e.g., N in resource ID (ResourceID) #1-#3) resources (CSI-RS resources / SSB resources) from the selected CSI resource set.

[0186] Fig. 9 This is a diagram showing an example of CSI reporting operation between a UE and a base station involved in implementation mode 1.3. For example, the UE may determine (select) one or more CRI / SSBRIs from a reported CSI resource set. In addition, the UE may also report the received power (e.g., L1-RSRP) of the selected CRI / SSBRI to the base station.

[0187] Fig.10 is a diagram showing an example of a CSI report according to Implementation 1.3. Fig.10 As shown, the CSI field may also include a resource set indicator (Resource set indicator). The UE can use the resource set indicator to report to the base station from which CSI resource set the CSI resource for reporting received power is selected.

[0188] For example, when a certain CSI resource set #X is indicated by a resource set indicator, all received powers may also be determined based on the CSI resource set #X. In this case, the CRI (or SSBRI) #1-#4 shown in the figure all represent resources within the CSI resource set #X.

[0189] The bit width of the resource set indicator may also be determined based on specific rules / parameters. For example, the bit width may also be determined based on the number of CSI resource sets associated with the CSI resource setting or trigger state (CSI-AperiodicTriggerState). More specifically, the bit width may also be determined, for example, by ceil(log2(S)). S may also be the number of associated CSI resource sets. In the present disclosure, ceil(X) may also mean applying a ceiling function to X.

[0190] In addition, the bit width of the CRI / SSBRI field can also be determined based on the number (maximum number or arbitrary number) of CSI resources / SSB resources in a CSI resource set associated with the CSI resource setting or trigger state (CSI-AperiodicTriggerState). The bit width can also be determined, for example, by ceil(log2(M)). The M can also be the number of CSI resources in the associated CSI resource set. In this case, the UE may not assume that the number of CSI resources in each CSI resource set is greater than N (for example, nrofReportedRS). That is, the UE may also assume that the number of CSI resources in each CSI resource set is not greater than N.

[0191] M may also be the maximum number of CSI resources in each CSI resource set in one or more CSI resource sets specified by the resource set indicator (i.e., the number of CSI resources included in the CSI resource set in which the CSI resources are set to the maximum). In this case, regardless of the value of the resource set indicator, the bit widths of CRI (or SSBRI) #1-#4 are all the same.

[0192] M may also be the number of CSI resources in each CSI resource set specified by the resource set indicator. In this case, if the value of the resource set indicator is different, the bit width of CRI (or SSBRI) #1-#4 may be different. In addition, when N is not the maximum number but an arbitrary number, the UE may also assume that the number of CSI resources in each CSI resource set is the same across multiple CSI resource sets.

[0193] In addition, the UE may also determine the CSI resource set to be reported through a single reporting instance based on at least one of the following rules (options 1-3). That is, the following options 1-3 represent a method for determining a resource set indicator.

[0194] Option 1: The UE determines a CSI resource set including CSI resources that achieve the maximum RSRP / SINR in channel measurement as a CSI resource set for reporting.

[0195] Option 2: The UE determines a CSI resource set including N (the number of CSI resources to be reported) CSI resources that achieve the maximum average RSRP / SINR in channel measurement as a CSI resource set for reporting.

[0196] Option 3: The UE randomly determines the CSI resource set.

[0197] According to Embodiment 1.3, the UE can select the desired CSI resource to be reported from one grouped CSI resource set and report it to the base station. In addition, Embodiment 1.3 can be applied to the case where the information described later (information described in <Supplement>, such as a specific RRC parameter) is set.

[0198] [Implementation method 1.4]

[0199] In Implementation 1.4, another example of resource selection is described.

[0200] The UE may also select a CRI / SSBRI with the same resource ID from each of the multiple CSI resource sets associated with one CSI resource setting or trigger state (CSI-AperiodicTriggerState), and report the CRI / SSBRI through a single reporting instance. In addition, "having the same resource ID" may also be mutually overwritten with the same i-th (i is an integer) entry corresponding to each CSI resource set.

[0201] In addition, Embodiment 1.4 can be applied to the case where the information described later (the information described in <Supplement>, for example, a specific RRC parameter) is set.

[0202] In the case where there is no reported CRI / SSBRI in several CSI resource sets, the corresponding RSRP / SINR field may also be a bit determined in the standard (eg, a bit string consisting of only '0').

[0203] The UE may also be set with a parameter indicating the number of CRI / SSBRI fields within one CSI field. In addition, in the present disclosure, the CSI field may also refer to a field included in a CSI report.

[0204] Fig.11 is a diagram showing an example of grouping of CSI resource sets involved in implementation mode 1.4. Fig.11 As shown, the UE can select resources (CSI resources / SSB resources) with the same resource ID (for example, any one of resource IDs (ResourceID) #1-#3) from each of the grouped multiple CSI resource sets (resource set IDs (ResourceSetID) #1-#3).

[0205] Fig.12This is a diagram showing an example of CSI reporting operation between a UE and a base station involved in implementation mode 1.4. For example, the UE may determine (select) a CRI / SSBRI to be reported from each CSI resource set. In addition, the UE may report to the base station the received power (e.g., L1-RSRP) of the CRI / SSBRI selected from each CSI resource set.

[0206] The CSI reporting method can select at least one of the following two options (options 1-2). Fig.13A as well as Fig. 13B is a diagram showing an example of a CSI report according to Implementation 1.4. Specifically, Fig.13A Corresponding to option 1, Fig. 13B Corresponds to option 2.

[0207] Option 1: The UE may also include in the CSI report which CSI resource set among multiple CSI resource sets for which L1-RSRP is reported.

[0208] like Fig.13A As shown, the CSI field may also include resource set indicators (resource set indicators #1-#4) corresponding to the reported RSRP (RSRP #1-#4). Based on the resource set indicators, the UE can report to the base station which CSI resource set is used to report the received power.

[0209] In Option 1, the bit width of the resource set indicator may also be determined based on specific rules / parameters. For example, the bit width may also be determined based on the number of CSI resource sets associated with the CSI resource setting or CSI-AperiodicTriggerState. More specifically, the bit width may also be determined, for example, by ceil(log2(S)). The S may also be the number of associated CSI resource sets.

[0210] Option 2: The UE may also select one CRI / SSBRI for each of the multiple CSI resource sets and report the RSRP.

[0211] like Fig. 13B As shown in FIG. 1 , the CSI field may also include a resource set indicator (Resource set indicator) indicating the resource set corresponding to the maximum RSRP value (RSRP#1) among multiple CSI resource sets. In Option 2, the RSRP of all CSI resource sets is included in the CSI report. Fig.13A Differently, there is no need to include multiple resource set indicators.

[0212] In Option 2, the bit width of the CRI / SSBRI field may also be determined based on the number (maximum number) of CSI-RS resources / SSB resources in a resource set associated with the CSI resource setting or trigger state (CSI-AperiodicTriggerState). The bit width may also be determined, for example, by ceil(log2(S)). The S may also be the number of CSI resources in the associated CSI resource set.

[0213] According to the first embodiment described above, regardless of the directivity of the multiple beams, a set of multiple beams (CSI resource sets) can be grouped, and the UE can select the desired RS resources (CSI resources / SSB resources) for the grouped CSI resource sets and report to the base station.

[0214] <Second embodiment>

[0215] The second embodiment relates to the determination of CRI / SSBRI based on the index. The first embodiment and the second embodiment may also be applied in combination.

[0216] [Implementation method 2.1]

[0217] In Embodiment 2.1, the selection of a plurality of different CRI / SSBRIs based on the resource index (CSI resource index / SSB resource index) configured for CSI reporting is described. In the present disclosure, the selection of CRI / SSBRI may also be rewritten as the reporting of CRI / SSBRI.

[0218] The UE may also select N different CRI / SSBRIs based on the resource index set for L1-RSRP / SINR, and report the CRI / SSBRIs through a single reporting instance (CSI report).

[0219] Here, N may also be determined by an RRC parameter (eg, nrofReportedRS). N may be, for example, an integer greater than 1 or including 1.

[0220] The UE may also select the reported CRI / SSBRI based on the rules shown below.

[0221] Option 1: The UE reports CRI / SSBRI expressed as consecutive resource indices.

[0222] Option 2: Report consecutive resource IDs (nzp-CSI-RS-ResourceId) (or CRI) within a sequence indicated by the nzp-CSI-RS-Resources field included in the associated RRC parameter (NZP-CSI-RS-ResourceSet IE).

[0223] Option 3: Report consecutive (or CRI) CRI / SSBRI represented by the resource ID (SSB index) within the sequence represented by the csi-SSB-ResourceList field included in the RRC parameter (CSI-SSB-ResourceSet IE).

[0224] Fig.14 This is a diagram showing an example of resource selection involved in Implementation 2.1. Fig.14 In FIG. 8 , 8 CSI resources (or SSB resources) are shown arranged horizontally. Each CSI resource is represented by a resource index (resource index #1-#8). For example, the UE may also select 4 consecutive CSI resources represented by resource index #3-#6 from the 8 CSI resources.

[0225] In addition, in order to indicate more than one (eg, N) different CRI / SSBRIs, the UE may also report only one CRI / SSBRI field through a single reporting instance. The following describes changes in resource selection in embodiments 2.1.1-2.1.5.

[0226] [Implementation method 2.1.1]

[0227] The UE may also report the CRI / SSBRI represented by the modulo operation shown below through a single reporting instance. Specifically, the UE may also use one CRI / SSBRI field to report (CRI / SSBRI) mod(X), (CRI / SSBRI+1) mod(X), ..., (CRI / SSBRI+N-1) mod(X). The CRI / SSBRI shown here may represent the value of the resource index. In addition, N may represent the number of reported CSI resources. X may be the number of CSI resources (or SSB resources) in the associated CSI resource set. mod may represent a modulo operation. For example, (A) mod(B) is equivalent to the remainder obtained by dividing A by B.

[0228] Fig.15A as well as Fig. 15B This is a diagram showing an example of resource selection according to Embodiment 2.1.1. The portion surrounded by the dotted line represents the selected CSI resource. Fig.15AIndicates the case of CRI / SSBRI=2, N=4, X=8, Fig. 15B It shows the case where CRI / SSBRI=6, N=4, and X=8.

[0229] By using the above-mentioned modular operation, the UE can select N consecutive CSI resources from the X CSI resources included in a CSI resource set. In particular, Fig. 15B As shown, by using a modulo operation, a plurality of CSI resources (resource indexes (Resource index) #6, #7, #0, #1) that are not necessarily consecutive can be selected as consecutive CSI resources.

[0230] When selecting multiple consecutive resources, the UE can report the initial CRI / SSBRI among the consecutive CRI / SSBRIs (option 1 mentioned above), or report the CSI / SSBRI corresponding to the initial entry represented in the sequence (option 2 or option 3 mentioned above).

[0231] In addition, the UE may also use the CRI / SSBRI field directly to report the value of the resource index instead of using the modulo operation. In this case, if the value of the resource index is greater than X, the UE may also assume that the RSRP / SINR field corresponding to the resource index is a predefined bit. For example, Fig. 15B In the case of CRI / SSBRI=6, N=4, and X=8, the RSRP of the reporting object corresponds to resource indexes #6-#9, but since no resources corresponding to resource indexes above X=8 are set, the UE may also generate a CSI report using the RSRP fields corresponding to resource indexes #8 and #9 as predefined bit values. In addition, the UE may not assume that the value of the resource index is greater than X. That is, the UE may also assume that the value of the resource index is less than X.

[0232] [Implementation method 2.1.2]

[0233] The UE may also report the CRI / SSBRI represented by the modulo operation shown below through a single reporting instance. Specifically, the UE may also use the CRI / SSBRI field to report (CRI / SSBRI) mod(X), (CRI / SSBRI-1) mod(X), ..., (CRI / SSBRI-N) mod(X).

[0234] According to the modulo operation, for example, the UE can report the last CRI / SSBRI in consecutive CRI / SSBRIs (option 1 mentioned above), or report the CSI / SSBRI corresponding to the last entry represented in the sequence (option 2 or option 3 mentioned above).

[0235] [Implementation method 2.1.3]

[0236] The UE may also report the CRI / SSBRI represented by the modulo operation shown below through a single reporting instance. Specifically, the UE may also use the CRI / SSBRI field to report (CRI / SSBRI) mod(X), (CRI / SSBRI+1) mod(X), (CRI / SSBRI-1) mod(X), (CRI / SSBRI+2) mod(X), (CRI / SSBRI-2) mod(X).

[0237] According to the modulo operation, for example, the UE can report the middle CRI / SSBRI among consecutive CRI / SSBRIs (option 1 mentioned above), or report the CSI / SSBRI corresponding to the middle entry represented in the sequence (option 2 or option 3 mentioned above).

[0238] [Implementation method 2.1.4]

[0239] The UE may also report the CRI / SSBRI represented by the modulo operation shown below through a single reporting instance. Specifically, the UE may also report (CRI / SSBRI) mod(X), (CRI / SSBRI-1) mod(X), (CRI / SSBRI+1) mod(X), (CRI / SSBRI-2) mod(X), (CRI / SSBRI+2) mod(X) as CRI / SSBRI fields.

[0240] According to the modulo operation, for example, the UE can report the middle CRI / SSBRI among consecutive CRI / SSBRIs (option 1 mentioned above), or report the CSI / SSBRI corresponding to the middle entry represented in the sequence (option 2 or option 3 mentioned above).

[0241] In implementations 2.1.2-2.1.4, the UE may also not use the modulo operation, but directly report the value of the resource index as the CRI / SSBRI field. In this case, if the value of the resource index is greater than X, the UE may also assume that the RSRP / SINR field is a predefined bit. In addition, the UE may not assume that the value of the resource index is greater than X. That is, the UE may also assume that the value of the resource index is less than X.

[0242] Fig.16 is a diagram showing an example of a CSI report according to Implementation 2.1. Fig.16As shown, in addition to the CSI / SSBRI field, the CSI field may also include a field indicating the CRI / SSBRI corresponding to the maximum received power (e.g., RSRP / SINR) among the N (or 5) CRI / SSBRIs of the reporting object. This field may indicate, for example, the i-th (i is an integer) CRI / SSBRI among the N (or 5) CRI / SSBRIs, or the beginning / middle / last CRI / SSBRI.

[0243] [Implementation method 2.1.5]

[0244] The UE may also report the CRI / SSBRI represented by the modulo operation shown below through a single reporting instance. Specifically, the UE may also report (CRI / SSBRI) mod(X), (CRI / SSBRI+Y) mod(X), ..., (CRI / SSBRI+Y*(N-1)) mod(X) as the CRI / SSBRI field. As described above, X may be the number of CSI resources (or SSB resources) in the associated CSI resource set. Y may be an integer determined by a set parameter (e.g., a specific RRC parameter). Y may also be referred to as an offset number.

[0245] Fig.17 This is a diagram showing an example of resource selection according to Embodiment 2.1.5. The portion surrounded by the dotted line represents the selected CSI resource. Fig.17 It shows the case where CRI / SSBRI=1, N=4, X=8, and Y=2.

[0246] According to the modular operation, for example, the UE can select a CSI resource that is offset by Y from the consecutive CRI / SSBRI. Fig.17 In the example, the UE can choose to skip one and total 4 consecutive CSI resources.

[0247] In addition, the bit width of the CRI / SSBRI field can also be determined based on the number (maximum number) of CSI-RS resources / SSB resources in a resource set associated with the CSI resource setting. The bit width can also be determined, for example, by ceil(log2(S)). The S can also be the number of CSI resources in the associated CSI resource set.

[0248] In addition, the UE may not use the modulo operation, but directly report the value of the resource index as the CRI / SSBRI field. In this case, if the value of the resource index is greater than X, the UE may also assume that the RSRP / SINR field is a predefined bit. In addition, the UE may not assume that the value of the resource index is greater than X. That is, the UE may also assume that the value of the resource index is less than X.

[0249] [Modifications]

[0250] In each of the above-mentioned embodiments, resources arranged in one direction (horizontally) are used as an example for description. However, the angles of the beam set are generally distributed in two directions, the horizontal direction and the vertical direction. Therefore, in the following, a case where resource configuration is extended not only in the horizontal direction but also in the vertical direction is described. For example, the above-mentioned embodiments 1.4 and 2.1 can be combined. The UE can apply the embodiments 1.4 and 2.1 in combination.

[0251] Fig.18 is a diagram showing resource selection involved in a modification example. Fig.18 As shown, the UE is able to select two consecutive CSI resource sets (resource set ID (ResourceSetID) #1, #2) from the grouped multiple CSI resource sets (resource set ID (ResourceSetID) #1-#3), and further select CSI resources with the same resource ID (e.g., resource ID (ResourceID) #2, #3) from each selected CSI resource set. For example, the same CSI resource set may correspond to a beam with the same horizontal angle, and the same resource ID may correspond to a beam with the same vertical angle. In addition, in the present disclosure, the same angle may also mean the same angle with some error results allowed.

[0252] According to the modification example, it is possible to select desired CSI resources based on the relationship between beams in the horizontal direction and the vertical direction.

[0253] [Implementation method 2.2]

[0254] In Embodiment 2.2, a case where resource allocation is extended not only in the lateral direction (horizontal direction) but also in the longitudinal direction (vertical direction) is described.

[0255] The UE may also select N (N_v*N_h) different CRI / SSBRIs based on the resource index configured for L1-RSRP / SINR, and report the CRI / SSBRIs through a single reporting instance.

[0256] Here, N can be calculated by the formula of N=N_v*N_h or N_v+N_h. N_v represents the number of CSI resources in the vertical direction, and N_h represents the number of CSI resources in the horizontal direction. N, N_v and N_h can also be determined by RRC parameters (e.g., nrofReportedRS). In addition, the maximum values ​​of N, N_v, N_h, and N_v*N_h, N_v+N_h can also be determined by UE capabilities, for example. Below, changes in resource selection are shown in implementation modes 2.2.1-2.2.2.

[0257] [Implementation method 2.2.1]

[0258] [Implementation method 2.2.1.1]

[0259] In order to indicate multiple (eg, N) different CRI / SSBRIs, the UE can select and report only one CRI / SSBRI, thereby reducing the overhead in the UCI.

[0260] The UE may also report the CRI / SSBRI represented by the modulo operation shown below through a single reporting instance. Specifically, the UE may also report (CRI / SSBRI) mod(M), (CRI / SSBRI+1) mod(M), ..., (CRI / SSBRI+N_h-1) mod(M), (CRI / SSBRI+M_h*1) mod(M), ..., (CRI / SSBRI+M_h*1+1) mod(M), ..., (CRI / SSBRI+M_h*N_v) mod(M), (CRI / SSBRI+M_h*N_h+1) mod(M), ..., (CRI / SSBRI+M_h*N_v+N_h) mod(M) as the CRI / SSBRI field. Here, M may also be the total number of CSI resources in the associated CSI resource set. In addition, M_h may also be the total number of CSI resources in the horizontal direction. M_h may also be an integer determined by an RRC parameter.

[0261] Fig.19 This is a diagram showing an example of resource selection according to Embodiment 2.2.1.1. The portion surrounded by the dotted line represents the selected CSI resource. Fig.19 It shows the case where CRI / SSBRI=5, N_h=2, N_v=2, and M_h=4.

[0262] According to this modular operation, for example, Fig.19 As shown, the UE can select four (2×2) adjacent resources within the associated CSI resource set.

[0263] [Implementation method 2.2.1.2]

[0264] The UE may also report the CRI / SSBRI represented by the floor function and modulo operation shown below through a single reporting instance. Specifically, the UE may also report using the CRI / SSBRI field:

[0265] (floor((CRI / SSBRI) / M_h)*M_h+(CRI / SSBRI)mod M_h)mod M,

[0266] (floor((CRI / SSBRI) / M_h)*M_h+(CRI / SSBRI+1)mod M_h)mod M,…,

[0267] (floor((CRI / SSBRI) / M_h)*M_h+(CRI / SSBRI+N_h)mod M_h)mod M,

[0268] (floor((CRI / SSBRI) / M_h+1)*M_h+(CRI / SSBRI)mod M_h)mod M,…,

[0269] (floor((CRI / SSBRI) / M_h+1)*M_h+(CRI / SSBRI+N_h)mod M_h)mod M,…,

[0270] (floor((CRI / SSBRI) / M_h+N_v)*M_h+(CRI / SSBRI)mod M_h)mod M,…,

[0271] (floor((CRI / SSBRI) / M_h+N_v)*M_h+(CRI / SSBRI+N_h)mod M_h)mod M. Here, M may also be the total number of CSI resources in the associated CSI resource set. In addition, M_h may also be the total number of resources in the horizontal direction. M_h may also be an integer determined by an RRC parameter. In the present disclosure, floor(X) may also mean applying a floor function to X.

[0272] Fig. 20 This is a diagram showing an example of resource selection according to Embodiment 2.2.1.2. The portion surrounded by the dotted line represents the selected CSI resource. Fig. 20 It shows the case where CRI / SSBRI=7, N_h=2, N_v=2, and M_h=4.

[0273] Fig.21 This is a diagram showing another example of resource selection according to Embodiment 2.2.1.2. The portion surrounded by the dotted line represents the selected CSI resource. Fig.21 It shows the case where CRI / SSBRI=11, N_h=2, N_v=2, and M_h=4.

[0274] According to the floor function and the modular operation, for example, Fig. 20 as well as Fig.21 As shown, the UE can select four resources in the associated resource set. In this case, even if the four resources are not necessarily adjacent, the UE can select them as adjacent resources.

[0275] In addition, the UE may not use the modulo operation but directly report the value of the resource index as the CRI / SSBRI field. In this case, CRI / SSBRI+N_h+M_h*N_v may also be limited to be less than N. In addition, if the number of resources is greater than M, the UE may also assume that the corresponding RSRP / SINR field is a predefined bit.

[0276] [Implementation method 2.2.2]

[0277] In implementation 2.2.2, the UE can report N CRI / SSBRI fields through the CSI field. The UE can also report CRI / SSBRI that satisfies at least one of the following conditions 1-5. In addition, which condition is satisfied can also be determined based on a set parameter.

[0278] Condition 1: The reported CRI / SSBRI is other CRI / SSBRI+Y_h or other CRI / SSBRI-Y_H reported by the same reporting instance.

[0279] Condition 2: The reported CRI / SSBRI is other CRI / SSBRI+M_h*Y_v or the other CRI / SSBRI-M_h*Y_v reported by the same reporting instance.

[0280] Condition 3: The reported CRI / SSBRI is other CRI / SSBRI-(M_h-Y_h) reported through the same reporting instance.

[0281] Condition 4: The reported CRI / SSBRI is not other CRI / SSBRI ±1, ±1, ..., or ±Y_h reported by the same reporting instance.

[0282] Condition 5: The reported CRI / SSBRI is not another CRI / SSBRI ±M_h*1, ±M_h*2, ..., ±M_h*Y_v reported by the same reporting instance. Here, Y_h and Y_v may be integers determined by set parameters (e.g., specific RRC parameters). Y_h may also be referred to as an offset number in the horizontal direction, and Y_v may also be referred to as an offset number in the vertical direction.

[0283] Fig. 22 This is a diagram showing an example of resource selection according to Embodiment 2.2.2. The portion surrounded by the dotted line represents the selected CSI resource. Fig. 22 This represents a case where N=3, M_h=4, Y_h=1, Y_v=1, and condition 1 or condition 2 is applied.

[0284] Fig.23 is a diagram showing an example of a CSI report according to Implementation 2.2.2. Fig.23 As shown, in addition to the CSI / SSBRI field, the CSI field may also include a field indicating the CRI / SSBRI corresponding to the maximum received power (e.g., RSRP / SINR) among the N CRI / SSBRIs of the reporting object. This field may indicate, for example, the i-th (i is an integer) CRI / SSBRI among the N CRI / SSBRIs, or the beginning / middle / last CRI / SSBRI.

[0285] Fig.24 This is a diagram showing another example of resource selection according to Embodiment 2.2.2. The portion surrounded by the dotted line represents the selected CSI resource. Fig.24 This represents a case where N=4, M_h=4, Y_h=2, Y_v=2, and condition 1 or condition 2 is applied.

[0286] In the above conditions 1-5, when the number of CSI resources in the associated CSI resource set M_h = M, embodiment 2.2.2 can be applied. In addition, which of the above embodiments is applied can be determined based on the information described later (information described in <Supplement>, such as a specific RRC parameter).

[0287] According to the second embodiment described above, it is possible to appropriately select a CSI resource for CSI reporting from a plurality of CSI resources in a related CSI-RS resource set.

[0288] <Third Embodiment>

[0289] The third embodiment relates to determination of CRI / SSBRI based on set parameters.

[0290] [Implementation method 3.1]

[0291] In implementation 3.1, the UE may also select N (N_v*N_h) different CRI / SSBRIs based on parameters set for L1-RSRP / SINR (eg, specific RRC parameters), and report the CRI / SSBRIs through a single reporting instance.

[0292] The UE may also be configured with parameters for mapping the vertical / horizontal (or azimuth / elevation) angles of the spatial domain filter associated with the resource. The UE may also apply at least one of the following options 1-4 to report CRI / SSBRI.

[0293] Option 1: The UE may also report N consecutive CRIs / SSBRIs in the vertical direction / horizontal direction (or azimuth direction / elevation direction).

[0294] Option 2: The UE may also report N_v consecutive CRIs / SSBRIs in the vertical direction (or elevation direction). In addition, the UE may also report N_h consecutive CRIs / SSBRIs in the horizontal direction (or azimuth direction).

[0295] Option 3: The UE may also report N CRIs / SSBRIs selected at certain intervals (certain interval) in the vertical direction / horizontal direction.

[0296] Option 4: The UE may also report N CRIs / SSBRIs separated by a certain interval (certain interval) in the vertical direction / horizontal direction.

[0297] In addition, a certain interval (certain interval) may be determined based on information described later (information described in <Supplement>, for example, a specific RRC parameter).

[0298] Fig.25 Indicates the area to which the resources involved in Embodiment 3.1 are mapped. RS resources can be mapped to a certain area in the vertical direction or horizontal direction specified by the set parameters.

[0299] [Implementation method 3.2]

[0300] In implementation 3.2, the UE may also select N different CRI / SSBRIs based on parameters set for L1-RSRP / SINR (eg, specific RRC parameters), and report the CRI / SSBRIs through a single reporting instance.

[0301] The UE may also be configured with a subset of RS resources associated with each RS resource (CSI resource / SSB resource). The UE may apply at least one of the following options 1-2 to report CRI / SSBRI.

[0302] Option 1: When the UE reports the corresponding CRI / SSBRI, the UE may also report the subset associated with the RS resource. In this case, the CRI / SSBRI field corresponding to the subset associated with the RS resource can be omitted. This can reduce communication overhead.

[0303] Option 2: When the UE reports the corresponding CRI / SSBRI, the UE may also prioritize the subsets associated with the RS resources to be reported. Here, whether the UE includes the L1-RSRP / SINR of the prioritized RS resources may depend on the implementation of the UE.

[0304] [Implementation method 3.3]

[0305] In Embodiment 3.3, information related to the reception beam (reception beam information) is described.

[0306] The UE may also report information related to the receive beam (receive beam information).

[0307] The UE may also report the receive beam information together with the CSI (L1-RSRP / SINR) report.

[0308] The receive beam information may also be, for example, an RS resource indicator.

[0309] The RS resource indicator may be, for example, at least one of an RS resource ID, an RS resource set ID, and an SRS resource indicator (eg, srs-ResourceIndicator).

[0310] The indicator of the RS resource may also be information of an SRS resource / resource set using the same spatial domain transmit filter / transmit beam as the spatial domain receive filter / receive beam used for the corresponding measurement.

[0311] The UE may also be configured with an SRS resource set for reporting the received beam information. In this case, for example, the usage of the SRS resource set may also be set to at least one of the following: receiving beam determination, and L1-RSRP accompanying the received beam information.

[0312] The bit width of the field of the reported RS resource indicator may also be determined based on certain rules / parameters.

[0313] For example, the bit width may also be determined by ceil(log2(N)). N may also be the number of SRS resources in the associated SRS resource set. In the present disclosure, ceil(X) may also mean applying a ceiling function to X.

[0314] The RS resource indicator / RS resource set indicator may also be reported together with the panel index (CapabilityIndex).

[0315] Figure 26A-26D This is a diagram showing an example of the bit width of the parameters included in the CSI report involved in Implementation 3.3.

[0316] exist Fig.26A The example shown describes a situation where the RS resource indicator is reported together with the panel index (capability index (CapabilityIndex)) in the beam report (CSI report).

[0317] exist Fig.26AIn the example shown, the bit width of the information included in the beam report is shown. The number of bits (X) of the RS resource indicator can also be determined based on the above method.

[0318] In addition, the RS resource indicator / RS resource set indicator may also be reported separately from the panel index (capability index (CapabilityIndex)).

[0319] exist Fig.26B The example shown describes a situation where the RS resource indicator and the panel index (capability index (CapabilityIndex)) are reported separately in the beam report (CSI report).

[0320] and Fig.26A compared to, Fig.26B The only difference is that the information on the index (capability index (CapabilityIndex)) of the panel is not included.

[0321] In this way, by reporting the information related to the RS resources together with the CSI (L1-RSRP / SINR) report, it is possible to report the information related to the receiving beam used in the measurement to the NW when the beam information associated with the SRS resources is available.

[0322] In addition, the received beam information may also be, for example, a beam index.

[0323] The beam index may also be, for example, the index of the UE's receive beam / spatial domain receive filter used for the corresponding measurement.

[0324] For example, when the UE uses the same beam to receive the signal during measurement, the same beam index may also be reported.

[0325] When the same (or different) beam is used in the measurement, the UE may also determine to include the beam index in the beam report.

[0326] The bit width of the reported beam index field may also be determined based on certain rules / parameters.

[0327] For example, the bit width may be determined by ceil(log2(M)). M may also be a number represented by a receiving beam scanning factor of the UE.

[0328] For example, the bit width may be determined separately for each frequency range (for example, FR1 / FR2 (FR2-1 / FR2-2) / FR3 / FR4 / FR5).

[0329] The beam index may also be reported together with the panel index (CapabilityIndex).

[0330] exist Fig.26C The example shown describes a situation in which a receive beam index (RxbeamIndex) and a panel index (capability index (CapabilityIndex)) are reported together in a beam report (CSI report).

[0331] exist Fig.26C In the example shown, the bit width of the information included in the beam report is shown. The number of bits (X) of the receive beam index can also be determined based on the above method.

[0332] In addition, the receive beam index may also be reported separately from the panel index (CapabilityIndex).

[0333] exist Fig.26D The example shown describes a situation in which the receive beam index and the panel index (capability index (CapabilityIndex)) are reported separately in the beam report (CSI report).

[0334] and Fig.26C compared to, Fig.26D The only difference is that the information on the index (capability index (CapabilityIndex)) of the panel is not included.

[0335] When the panel index (capability index (CapabilityIndex)) corresponding to the report result is different, even if the beam index corresponding to the report result is the same, the UE / NW can assume / determine that different beams / spatial domain filters are used for correspondence.

[0336] In this way, by reporting the beam index together with the CSI (L1-RSRP / SINR) report, the beam can be reported using the same mechanism as the signal measurement in the beam (L1-RSRP / SINR) measurement, thereby simplifying the UE implementation.

[0337] The UE may also use the same spatial domain reception filter / UE antenna panel (UE capability value set) to measure / report L1-RSRP / SINR through a single reporting instance. The third embodiment can be applied to a case where specific parameters are set for the UE.

[0338] According to the third embodiment described above, the UE can appropriately determine the CRI / SSBRI based on the set parameters. In addition, the beam information from the UE to the NW can be appropriately transmitted.

[0339] <Fourth embodiment>

[0340] The fourth embodiment relates to the determination of the receiving beam / panel based on the NW.

[0341] Fig. 27 FIG. 4 is a diagram showing an example of operations between a UE and a base station according to the fourth embodiment. Fig. 27 As shown, the NW may also determine the receiving beam (spatial domain receiving filter) / panel used for the channel measurement of L1-RSRP / SINR and notify the UE.

[0342] [Implementation method 4.1]

[0343] The UE may also determine the spatial domain reception filter (which may also be referred to as reception beam) for CSI reporting based on the parameters received from the NW. In Embodiment 4.1, the UE may not report the reception beam information (eg, resource indicator / beam index) field in the CSI field.

[0344] [Implementation method 4.2]

[0345] The UE may also determine the UE antenna panel (UE capability value set) based on the parameters received from the NW in the channel measurement of L1-RSRP / SINR. In implementation 4.2, the UE may not report the capability index (CapabilityIndex) field in the CSI field.

[0346] [Implementation method 4.1']

[0347] The UE may determine the spatial domain reception filter for PDSCH / PDCCH reception based on the parameters received from the NW. In Embodiment 4.1', the UE may not receive information associated with QCL Type D.

[0348] [Implementation method 4.2']

[0349] The UE may also determine the UE antenna panel (UE capability value set) for PDSCH / PDCCH reception based on the parameters received from the NW.

[0350] [Implementation method 4.3]

[0351] When determining the spatial domain reception filter for CSI reporting, the UE may apply the same spatial domain reception filter for a certain period. Here, the UE may determine the starting point (timing) for applying the same spatial domain reception filter based on at least one of the following options 1-2.

[0352] Option 1: X symbols / slots / subframes / ms later indicating the application of the same spatial domain receive filter,

[0353] Option 2: From the time when CSI reporting including information indicating application of the same spatial domain reception filter is triggered by PDCCH / MAC CE, or after CSI reporting.

[0354] Here, X may be determined based on parameters received from the NW or may be predefined.

[0355] Furthermore, the UE may determine the timing (end point) for ending application of the same spatial domain reception filter based on at least one of the following options 1-4.

[0356] Option 1: After deciding to apply the same spatial domain receive filter, until Y symbols / slots / subframes / ms,

[0357] Option 2: After the UE receives other information to which the same spatial domain receive filter is applied, until Y symbols / slots / subframes / ms have passed.

[0358] Option 3: After the UE receives information indicating that different spatial domain receive filters can be applied, until Y symbols / slots / subframes / ms,

[0359] Option 4: After the UE receives information indicating application of a spatial domain receive filter different from the spatial domain receive filter applied by a certain UE, until Y symbols / time slots / subframes / ms.

[0360] Here, Y may be determined based on parameters received from the NW, or may be predefined (eg, 0 symbol).

[0361] [Implementation method 4.4]

[0362] In the CSI report, the UE may apply a spatial domain reception filter determined based on parameters received from the NW during a certain period.

[0363] Here, the UE may determine the starting point (timing) for applying the same spatial domain reception filter based on at least one of the following options 1-2.

[0364] Option 1: X symbols / slots / subframes / ms after information indicating application of a specific spatial domain receive filter,

[0365] Option 2: From the time when a CSI report including information indicating application of a specific spatial domain reception filter is triggered by a PDCCH / MAC CE, or after CSI reporting.

[0366] Here, X may be determined based on parameters received from the NW or may be predefined.

[0367] Furthermore, the UE may determine the timing (end point) for ending the application of the instructed spatial domain reception filter based on at least one of the following options 1-3.

[0368] Option 1: After determining the application of a specific spatial domain receive filter, until Y symbols / slots / subframes / ms,

[0369] Option 2: After the UE receives additional information to apply a specific spatial domain receive filter, until Y symbols / slots / subframes / ms have passed,

[0370] Option 3: After the UE receives information indicating application of a spatial domain reception filter different from the spatial domain reception filter applied by a certain UE, until Y symbols / time slots / subframes / ms.

[0371] Here, Y may be determined based on parameters received from the NW, or may be predefined (eg, 0 symbol).

[0372] [Implementation method 4.5]

[0373] Embodiment 4.5 relates to beam information received by the UE from the NW (beam information sent from the NW to the UE).

[0374] The beam information may also include at least one of the information / elements described in options 1-2 below.

[0375] [Option 1]

[0376] The beam information may include information indicating the direction (boresight direction) of the beam associated with the RS.

[0377] This information may be information indicating the angle of the direction (direction of the line of sight) of the beam associated with the RS.

[0378] The angle may also be an azimuth / elevation angle, for example.

[0379] This angle can also be the angle of the transmit beam in the base station / TRP.

[0380] [Option 2]

[0381] The beam information may include information indicating the power of the RS (beam power).

[0382] The power of the RS may be either the absolute power of the RS or the relative power of the RS with respect to a specific RS.

[0383] The information indicating the power of the RS may be information indicating the power of the RS at each angle.

[0384] The angle may also be an azimuth / elevation angle, for example.

[0385] This angle can also be the angle of the transmit beam in the base station / TRP.

[0386] The power (beam power) of the RS can also be expressed by the relative power between RSs compared with the peak power at the corresponding angle.

[0387] The UE may also determine the RS that achieves the peak power at the corresponding angle based on a specific rule / parameter. For example, when the power is expressed by a parameter on a sequence, the RS corresponding to a specific (eg, first) element may be determined as the RS that achieves the peak power.

[0388] [Implementation method 4.6]

[0389] The UE may also apply the spatial domain filter (beam) based on the parameters associating the RS (CSI-RS / SSB / SRS) and the spatial domain filter when transmitting and receiving each RS, or when transmitting and receiving when each RS is a QCL type D RS.

[0390] In addition, in the fourth embodiment (and the fifth embodiment described later), a common receiving beam (spatial domain receiving filter) / panel may be applied in the measurement of all CRI / SSBRI associated with one CSI report, or different receiving beams (spatial domain receiving filters) / panels may be applied in the measurement of each CRI / SSBRI associated with one CSI report.

[0391] [Modifications]

[0392] The UE may also include in one CSI report multiple received powers (eg, RSRP / SINR) measured by different receive beams (spatial domain receive filters) / panels for the same CRI / SSBRI.

[0393] According to the fourth embodiment described above, the NW can appropriately determine the reception beam / panel.

[0394] <Fifth embodiment>

[0395] The fifth embodiment relates to the reporting of receive beams and associations between panels.

[0396] Fig.28 It is a diagram showing the relationship between the panel of the UE and the SRS resources involved in the fifth embodiment.

[0397] The UE may also report auxiliary information / auxiliary data related to the association between the spatial domain receive filter and the antenna panel. For example, the UE may also report auxiliary information / auxiliary data related to the association between the SRS resource and the antenna panel (capability index (CapabilityIndex)). For example, Fig.28 As shown, SRS resources (SRS resource) #1-#2 can be associated with capability index (CapabilityIndex) #1, and SRS resources (SRS resource) #3-#4 can be associated with capability index (CapabilityIndex).

[0398] The UE may also report assistance information / assistance data related to the association between the SRS resource / SRS resource set and the beam index.

[0399] The UE may also report assistance information / assistance data related to the association between the beam index and the antenna panel (CapabilityIndex).

[0400] The UE may also report auxiliary information / data related to the association between the SRS resource set and the antenna panel (CapabilityIndex).

[0401] (Variation) The UE may also assume that the SRS resources in the same SRS resource set are transmitted from the same antenna panel.

[0402] The auxiliary information / auxiliary data is useful in the following cases: determining the spatial domain DL beam prediction or the spatial domain receive filter / antenna panel on the NW side.

[0403] The auxiliary information / auxiliary data may be included in the CSI report or sent separately from the CSI report.

[0404] The auxiliary information / auxiliary data may also include at least one of the following:

[0405] · The beam width until the radiation pattern drops 3dB from the peak (3dB beamwidth),

[0406] UE location information (position) / moving speed (speed) / trajectory.

[0407] In addition, the information may be expressed using at least one of the following formats:

[0408] * Ellipsoid Point (i.e., a point on the surface of an ellipsoid, and includes latitude / longitude),

[0409] *Ellipsoid point with uncertainty circle,

[0410] *Ellipsoid point with uncertaintyellipse,

[0411] *Polygon,

[0412] *Ellipsoid Point with Altitude,

[0413] *Ellipsoid point with altitude and uncertainty ellipsoid,

[0414] *Ellipsoid Arc.

[0415] These formats may also comply with the definition specified in 3GPP TS 23.202, for example. In addition, any shapes specified in 3GPP TS 23.202 may also be used as the format for the auxiliary information / auxiliary data.

[0416] According to the fifth embodiment described above, the UE can appropriately report the association between the reception beams and the panels.

[0417] <Supplement>

[0418] In each of the above-mentioned embodiments, RSRP / SINR / RSRQ, L1-RSRP / SINR / RSRQ, and RSRP / SINR / RSRQ in layer 3 (Layer 3 (L3-)) may be replaced with each other.

[0419] The CSI report disclosed in the present invention can be used in situations where group-based beam reporting / extended group-based beam reporting is not valid (for example, groupBasedBeamReporting / groupBasedBeamReporting-r17 is not set), and can also be used in situations where new group-based beam reporting is valid (for example, groupBasedBeamReporting-r18 / -r19 is set).

[0420] [Notification of information to UE]

[0421] The notification of arbitrary information (from the network (NW)) (for example, the base station (BS))) to the UE (in other words, the reception of arbitrary information from the BS in the UE) in the above-mentioned implementation manner can also be carried out using physical layer signaling (for example, DCI), high-layer signaling (for example, RRC signaling, MAC CE, LPP message, etc.), specific signals / channels (for example, PDCCH, PDSCH, reference signal) or a combination thereof.

[0422] When the above notification is performed through MAC CE, the MAC CE may be identified by including a new logical channel ID (Logical Channel ID (LCID)) not specified in the existing standard in a MAC subheader.

[0423] In the case where the above-mentioned notification is made through DCI, the above-mentioned notification may also be made through a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used in scrambling of a cyclic redundancy check (CRC) bit assigned to the DCI, the format of the DCI, etc.

[0424] In addition, the notification of arbitrary information to the UE in the above-mentioned embodiments may be performed periodically, semi-continuously, or aperiodically.

[0425] [Notification of information from UE]

[0426] The notification of arbitrary information from the UE (to the NW) in the above-mentioned implementation manner (in other words, the sending / reporting of arbitrary information from the UE to the BS) can also be carried out using physical layer signaling (e.g., UCI), high-layer signaling (e.g., RRC signaling, MAC CE, LPP message, etc.), specific signals / channels (e.g., PUCCH, PUSCH, PRACH, reference signals) or a combination thereof.

[0427] In the case where the above notification is performed through MAC CE, the MAC CE may also be identified by including a new LCID that is not specified in the existing standards in the MAC subheader.

[0428] When the notification is performed through UCI, the notification may be transmitted using PUCCH or PUSCH.

[0429] In addition, the notification of arbitrary information from the UE in the above-mentioned embodiments may be performed periodically, semi-continuously, or aperiodically.

[0430] [AI model information]

[0431] In the present disclosure, AI model information may also mean information including at least one of the following:

[0432] AI model input / output information,

[0433] Information for pre-processing / post-processing of AI model input / output,

[0434] Information about the parameters of the AI ​​model,

[0435] Training information for AI models (training information),

[0436] Reasoning information for AI models,

[0437] Performance information related to the AI ​​model.

[0438] Here, the input / output information of the above AI model may also include information related to at least one of the following:

[0439] Contents of input / output data (e.g., RSRP, SINR, amplitude / phase information in the channel matrix (or precoding matrix), information related to the angle of arrival (Angle of Arrival (AoA)), information related to the angle of departure (Angle of Departure (AoD)), location information),

[0440] Auxiliary information of the data (also called meta information),

[0441] The type of input / output data (e.g., immutable value, floating point number),

[0442] The bit width of the input / output data (e.g., 64 bits for each input value),

[0443] Quantization interval (quantization step size) of input / output data (e.g., 1 dBm for L1-RSRP),

[0444] The range that the input / output data can take (e.g., [0, 1]).

[0445] In addition, in the present disclosure, information related to AoA may also include information related to at least one of an azimuth angle of arrival and a zenith angle of arrival (ZoA). In addition, information related to AoD may also include information related to at least one of a radiation azimuth angle (azimuth angle of departure) and a radiation zenith angle (zenith angle of depature (ZoD)).

[0446] In the present disclosure, the location information may also be location information related to the UE / NW. The location information may also include at least one of the following: information (e.g., latitude, longitude, altitude) obtained using a positioning system (e.g., a satellite positioning system (Global Navigation Satellite System (GNSS)), a Global Positioning System (GPS), etc.)), information of a BS adjacent to (or in service of) the UE (e.g., an identifier (ID) of a BS / cell), the distance between the BS and the UE, the direction / angle of the BS (UE) observed from the UE (BS), the coordinates of the BS (UE) observed from the UE (BS) (e.g., coordinates of the X / Y / Z axes), etc.), a specific address of the UE (e.g., an Internet Protocol (IP) address), etc. The location information of the UE is not limited to information based on the location of the BS, but may also be information based on a specific point.

[0447] The location information may also include information related to its own implementation (eg, the location / position / orientation of the antenna, the location / orientation of the antenna panel, the number of antennas, the number of antenna panels, etc.).

[0448] The location information may also include mobility information. The mobility information may also include at least one of information indicating mobility type, moving speed of the UE, acceleration of the UE, moving direction of the UE, and the like.

[0449] Here, the mobility type may also correspond to at least one of a fixed location UE, a movable / moving UE, a no mobility UE, a low mobility UE, a middle mobility UE, a high mobility UE, a cell-edge UE, a non-cell-edge UE, etc.

[0450] In the present disclosure, environmental information (used for data) can be information related to the environment in which the data is obtained / utilized, for example, frequency information (frequency band ID, etc.), environment type information (information indicating at least one of indoor, outdoor, Urban Macro (UMa), Urban Micro (Umi), etc.), and can also correspond to information indicating line of sight (LOS) / non-line of sight (NLOS), etc.

[0451] Here, LOS may also mean that the UE and the BS are in a mutually visible environment (or without any shielding objects), and NLOS may also mean that the UE and the BS are not in a mutually visible environment (or with any shielding objects). The information indicating LOS / NLOS may indicate either a soft value (e.g., the probability of LOS / NLOS) or a hard value (e.g., one of LOS / NLOS).

[0452] In the present disclosure, meta information may also mean, for example, information related to input / output information suitable for an AI model, information related to acquired / available data, etc. Specifically, meta information may also include information related to beams of RS (e.g., CSI-RS / SRS / SSB, etc.) (e.g., the pointing angle of each beam, 3dB beam width, the shape of the pointed beam, the number of beams), layout information of antennas of gNB / UE, frequency information, environmental information, meta information ID, etc. In addition, meta information may also be used as input / output of an AI model.

[0453] [About application of each embodiment]

[0454] At least one of the above-mentioned embodiments may also be applied to a case where a specific condition is satisfied. The specific condition may be specified in a standard or may be notified to the UE / BS using a higher layer signaling / physical layer signaling.

[0455] At least one of the above-mentioned implementation modes may also be applied only to UEs that report specific UE capabilities (UE capability) or support the specific UE capabilities.

[0456] The specific UE capability may also represent at least one of the following:

[0457] Supporting specific processing / operation / control / information related to at least one of the above embodiments (e.g., maximum values ​​of N, N_v, N_H, N_v*N_H, N_v+N_H of L1-RSRP / L1-SINR).

[0458] In addition, the above-mentioned specific UE capabilities can be capabilities that are applied across all frequencies (commonly regardless of frequency), or capabilities for each frequency (for example, one or a combination of cells, frequency bands, frequency band combinations (combinations), BWPs, component carriers, etc.), or capabilities for each frequency range (for example, frequency range 1 (Frequency Range 1 (FR1)), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or capabilities for each subcarrier spacing (SubCarrier Spacing (SCS)), or capabilities for each feature set (Feature Set (FS)) or each feature set (Feature Set Per Component-carrier (FSPC)) of each component carrier.

[0459] In addition, the above-mentioned specific UE capabilities can be capabilities that are applied across full-duplex modes (commonly regardless of the duplex mode) or capabilities for each duplex mode (for example, time division duplex (TDD) and frequency division duplex (FDD)).

[0460] In addition, at least one of the above-mentioned embodiments may also be applied to the following situation: the UE is set / activated / triggered with specific information associated with the above-mentioned embodiments (or the operation of implementing the above-mentioned embodiments) through high-layer signaling / physical layer signaling. For example, the specific information may also be a CSI report, information indicating the selection of activating CRI / SSBRI, any RRC parameter for a specific version (e.g., Rel.18 / 19), etc.

[0461] When the UE does not support at least one of the above-mentioned specific UE capabilities or is not configured with the above-mentioned specific information, the UE may also apply the operations of Rel.15 / 16, for example.

[0462] (Note)

[0463] The following inventions are added to one embodiment of the present disclosure.

[0464] <First embodiment>

[0465] [Note 1]

[0466] The terminal has:

[0467] A receiving unit receives information of a CSI resource setting associated with a plurality of CSI resource sets; and

[0468] The control unit controls the sending of a CSI report, wherein the CSI report indicates measurement results related to one or more CSI resource sets selected from the plurality of CSI resource sets.

[0469] [Note 2]

[0470] A terminal as described in Appendix 1, wherein:

[0471] The one or more CSI resource sets is a CSI resource set,

[0472] The CSI report includes a field indicating the one CSI resource set, and does not include measurement results related to CSI resource sets other than the one CSI resource set.

[0473] [Note 3]

[0474] A terminal as described in Appendix 1 or Appendix 2, wherein:

[0475] The more than one CSI resource sets are more than one CSI resource sets,

[0476] The CSI report includes a plurality of fields respectively indicating the more than one CSI resource sets.

[0477] (Note)

[0478] The following inventions are added to one embodiment of the present disclosure.

[0479] <Second embodiment / Third embodiment>

[0480] [Note 1]

[0481] The terminal has:

[0482] A control unit determines a resource index satisfying a specific condition from among a plurality of resource indexes corresponding to a plurality of measurement results included in a channel state information (CSI) report; and

[0483] A sending unit is configured to send the CSI report including only the one resource index among the multiple resource indexes.

[0484] [Note 2]

[0485] A terminal as described in Appendix 1, wherein:

[0486] The specific condition is a first resource index among the plurality of consecutive resource indexes.

[0487] [Note 3]

[0488] A terminal as described in Appendix 1 or Appendix 2, wherein:

[0489] The control unit selects a resource index that is offset by a certain offset number among the plurality of consecutive resource indexes.

[0490] [Note 4]

[0491] A terminal as described in any one of Notes 1 to 3, wherein:

[0492] The control unit selects the plurality of resource index resources corresponding to the plurality of measurement results based on the number of resource indexes in the first direction and the number of resource indexes in the second direction.

[0493] (Note)

[0494] The following inventions are added to one embodiment of the present disclosure.

[0495] <Second embodiment>

[0496] [Note 1]

[0497] The terminal has:

[0498] A control unit determines, from resource indexes satisfying a specific condition, a plurality of resource indexes corresponding to measurement results included in a channel state information (CSI) report; and

[0499] A sending unit sends the CSI report including the multiple resource indexes.

[0500] [Note 2]

[0501] A terminal as described in Appendix 1, wherein:

[0502] The specific condition is that the resource index included in the CSI report is another resource index reported by the same CSI report.

[0503] (Note)

[0504] The following inventions are added to one embodiment of the present disclosure.

[0505] <Fourth embodiment>

[0506] [Note 1]

[0507] The terminal has:

[0508] a receiving unit that receives information specifying a spatial domain receive filter or panel used in measurements for a Channel State Information (CSI) report; and

[0509] A sending unit is configured to send the CSI report including a result measured using the spatial domain receiving filter or panel.

[0510] [Note 2]

[0511] A terminal as described in Appendix 1, wherein:

[0512] The sending unit does not send the receiving beam information in the CSI field.

[0513] [Note 3]

[0514] A terminal as described in Appendix 1 or Appendix 2, wherein:

[0515] The sending unit does not send a capability index (CapabilityIndex) field in the CSI field.

[0516] [Note 4]

[0517] A terminal as described in any one of Notes 1 to 3, wherein:

[0518] The control unit applies the same spatial domain reception filter during a certain period.

[0519] (Note)

[0520] The following inventions are added to one embodiment of the present disclosure.

[0521] <Fifth embodiment>

[0522] [Note 1]

[0523] The terminal has:

[0524] a control unit that generates information related to association between the spatial domain reception filter and the panel; and

[0525] A sending unit sends the information.

[0526] [Note 2]

[0527] A terminal as described in Appendix 1, wherein:

[0528] The information is information related to the association between a measurement reference signal (Sounding Reference Signal (SRS)) resource and the panel.

[0529] [Note 3]

[0530] A terminal as described in Appendix 1 or Appendix 2, wherein:

[0531] The information is information related to the association of the reception beam information and the panel.

[0532] [Note 4]

[0533] A terminal as described in any one of Notes 1 to 3, wherein:

[0534] The information is information related to the association between a measurement reference signal (Sounding Reference Signal (SRS)) resource set and the panel.

[0535] (Wireless Communication System)

[0536] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0537] Fig.29 1 is a diagram showing an example of a schematic structure of a wireless communication system involved in one embodiment. The wireless communication system 1 (which may also be simply referred to as system 1) may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5GNR), and the like.

[0538] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA))) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0539] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0540] The wireless communication system 1 can also support dual connections between multiple base stations within the same RAT (for example, dual connections (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0541] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration and number of each cell and user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as base stations 10.

[0542] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0543] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0544] Furthermore, the user terminal 20 may perform communication in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0545] Multiple base stations 10 may also be connected via wired (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station (relay) may also be referred to as an IAB node.

[0546] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0547] The core network 30 may also include, for example, user plane functions (User Plane Function (UPF)), access and mobility management function (Access and Mobility management Function (AMF)), session management function (Session Management Function (SMF)), unified data management (Unified Data Management (UDM)), application function (Application Function (AF)), data network (Data Network (DN)), location management function (Location Management Function (LMF)), operation and maintenance management (Operation, Administration and Maintenance (OAM))) and other network functions (Network Functions (NF)). In addition, multiple functions can also be provided by one network node. In addition, communication with an external network (for example, the Internet) can also be carried out via DN.

[0548] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0549] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. may be used.

[0550] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0551] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0552] In addition, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (Physical Random Access Channel (PRACH)) and the like can also be used in the wireless communication system 1.

[0553] User data, high-layer control information, system information block (SIB), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, master information block (MIB) can also be transmitted through PBCH.

[0554] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0555] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be rewritten as DL data, and the PUSCH may also be rewritten as UL data.

[0556] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0557] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be rewritten mutually.

[0558] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted through PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted through PRACH.

[0559] In the present disclosure, downlink, uplink, etc. may be expressed without the word “link.” In addition, various channels may be expressed without the word “physical” at the beginning.

[0560] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0561] The synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as SS / PBCH block, SS block (SSB), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0562] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0563] (Base Station)

[0564] Fig.301 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0565] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0566] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0567] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0568] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0569] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0570] The transmitting / receiving antenna 130 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0571] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0572] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0573] The sending and receiving unit 120 (sending processing unit 1211) may also perform processing on the Packet Data Convergence Protocol (PDCP) layer, processing on the Radio Link Control (RLC) layer (for example, RLC retransmission control), processing on the Medium Access Control (MAC) layer (for example, HARQ retransmission control), etc., for data and control information obtained from the control unit 110, to generate a bit string to be sent.

[0574] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (Discrete Fourier Transform (DFT)) processing (as needed), inverse fast Fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0575] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0576] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0577] The sending and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0578] The transmitting and receiving unit 120 (measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (Radio Resource Management (RRM)) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (Reference Signal Received Power (RSRP))), received quality (e.g., reference signal received quality (Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal to noise ratio (Signal to Noise Ratio (SNR))), signal strength (e.g., received signal strength indicator (Received Signal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0579] The transmission path interface 140 can also send and receive signals (return signaling) between the devices included in the core network 30 (for example, the network node providing NF), other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0580] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0581] In addition, the transmitting and receiving unit 120 may also transmit information on CSI resource settings associated with a plurality of channel state information (CSI) resource sets.

[0582] The sending and receiving unit 120 may also receive the CSI report including only the one resource index among the multiple resource indexes.

[0583] The sending and receiving unit 120 may also receive the CSI report including the multiple resource indexes.

[0584] The transmitting and receiving unit 120 may also transmit information specifying a spatial domain receiving filter or panel used in measurements for a Channel State Information (CSI) report.

[0585] The transmitting and receiving unit 120 may also receive the CSI report including the result measured using the spatial domain receiving filter or panel.

[0586] The transmitting and receiving unit 120 may not receive the receiving beam information in the CSI field.

[0587] The transmitting and receiving unit 120 may not receive the capability index (CapabilityIndex) field in the CSI field.

[0588] The transceiver unit 120 may also receive information related to the association between the spatial domain reception filter and the panel.

[0589] The control unit 110 may also control receiving a CSI report indicating measurement results related to one or more CSI resource sets selected from the plurality of CSI resource sets.

[0590] The control unit 110 may also determine a resource index that satisfies a specific condition from among a plurality of resource indexes corresponding to a plurality of measurement results included in a channel state information (CSI) report.

[0591] The control unit 110 may also determine a plurality of resource indexes corresponding to the measurement results included in the Channel State Information (CSI) report from resource indexes satisfying a specific condition.

[0592] (User Terminal)

[0593] Fig.312 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may each be provided in one or more pieces.

[0594] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0595] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0596] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 220.

[0597] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0598] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured as a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0599] The transmitting / receiving antenna 230 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0600] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0601] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0602] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0603] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0604] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing without performing DFT processing.

[0605] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0606] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230 .

[0607] The sending and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0608] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signal. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0609] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0610] In addition, the transmitting and receiving unit 220 may also receive information on CSI resource settings associated with a plurality of channel state information (CSI) resource sets.

[0611] The sending and receiving unit 220 may also send the CSI report including only the one resource index among the multiple resource indexes.

[0612] The sending and receiving unit 220 may also send the CSI report including the multiple resource indexes.

[0613] The transmitting and receiving unit 220 may also receive information specifying a spatial domain receive filter or panel used in measurements for Channel State Information (CSI) reporting.

[0614] The transmitting and receiving unit 220 may also transmit the CSI report including the result measured using the spatial domain receiving filter or panel.

[0615] The transmitting and receiving unit 220 may not send the receiving beam information in the CSI field.

[0616] The transmitting and receiving unit 220 may not send the capability index (CapabilityIndex) field in the CSI field.

[0617] The transceiver unit 220 may also transmit information related to the association between the spatial domain reception filter and the panel.

[0618] The control unit 210 may also control sending a CSI report indicating measurement results related to one or more CSI resource sets selected from the plurality of CSI resource sets.

[0619] The control unit 210 may also determine a resource index that satisfies a specific condition from among a plurality of resource indexes corresponding to a plurality of measurement results included in a channel state information (CSI) report.

[0620] The control unit 210 may also select a resource index that is offset by a certain offset number from among the plurality of consecutive resource indexes.

[0621] The control unit 210 may also select the plurality of resource index resources corresponding to the plurality of measurement results based on the number of resource indexes in the first direction and the number of resource indexes in the second direction.

[0622] The control unit 210 may also determine a plurality of resource indexes corresponding to the measurement results included in the Channel State Information (CSI) report from resource indexes satisfying a specific condition.

[0623] The control unit 210 may also apply the same spatial domain reception filter during a certain period.

[0624] The control unit 210 may also generate information related to the association between the spatial domain reception filter and the panel.

[0625] (Hardware Structure)

[0626] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, by wired, wireless, etc.) connected and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0627] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method is not particularly limited.

[0628] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Fig.32 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0629] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. can be interchangeably used. The hardware structure of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

[0630] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0631] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0632] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), the sending and receiving unit 120 (220), etc. may also be implemented by the processor 1001.

[0633] In addition, the processor 1001 reads the program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that causes a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be implemented for other functional blocks.

[0634] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0635] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (Blu-ray) (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other suitable storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0636] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. may also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) may also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0637] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0638] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0639] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and the hardware may be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0640] (Variation Example)

[0641] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be rewritten as terms having the same or similar meanings. For example, channels, symbols, and signals (signals or signaling) may also be rewritten with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc. depending on the standard applied. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0642] A wireless frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a wireless frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0643] Here, the parameter set may also be a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of a subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, a wireless frame structure, a specific filter processing performed by a transmitter and receiver in the frequency domain, a specific windowing processing performed by a transmitter and receiver in the time domain, and the like.

[0644] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0645] A time slot may also include multiple mini time slots. Each mini time slot may also be composed of one or more symbols in the time domain. In addition, a mini time slot may also be referred to as a sub-time slot. A mini time slot may also be composed of a smaller number of symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini time slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini time slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0646] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be replaced with each other.

[0647] For example, a subframe may be referred to as a TTI, a plurality of consecutive subframes may be referred to as a TTI, and a time slot or a mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0648] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0649] TTI may also be a transmission time unit for a data packet (transport block), a code block, a code word, etc. that has been channel-coded, and may also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0650] In addition, when a time slot or a mini time slot is called TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) can also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling can also be controlled.

[0651] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0652] In addition, a long TTI (e.g., normal TTI, subframe, etc.) can also be rewritten as a TTI with a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) can also be rewritten as a TTI with a TTI length shorter than that of the long TTI and longer than 1 ms.

[0653] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0654] In addition, an RB may include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0655] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0656] In addition, a resource block may be composed of one or more resource elements (RE). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0657] A Bandwidth Part (BWP) (also referred to as a partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, a common RB may also be identified by an index of the RB relative to a common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0658] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0659] At least one of the set BWPs may be activated, and the UE may not assume that it will transmit or receive a specific signal / channel other than the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be rewritten as "BWP".

[0660] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0661] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0662] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0663] Information, signals, etc. described in this disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0664] Furthermore, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0665] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0666] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB)), etc.), Medium Access Control (MAC) signaling), other signals or a combination thereof.

[0667] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (Layer 1 / Layer 2 (L1 / L2)) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0668] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0669] The determination can be made by a value represented by a bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a specific value).

[0670] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, etc.

[0671] In addition, software, instructions, information, etc. may also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0672] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0673] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0674] In the present disclosure, terms such as "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" can be used interchangeably. There are also cases where base stations are referred to by terms such as macro cell, small cell, micro-micro cell, and micro-micro cell.

[0675] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0676] In the present disclosure, the base station sending information to the terminal may also be rewritten with the base station instructing the terminal to control / operate based on the information.

[0677] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0678] There are also cases where a mobile station is referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client or several other appropriate terms.

[0679] At least one of the base station and the mobile station may also be referred to as a transmission device, a reception device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may be a device mounted on a moving object, a moving object body, etc.

[0680] The mobile body refers to a movable object, and the moving speed is arbitrary, and of course it also includes the situation where the mobile body stops. The mobile body includes, for example, vehicles, transport vehicles, cars, automatic two-wheeled vehicles (motorcycles), bicycles, connected cars, loading shovels, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, trolleys, rickshaws, ships (ships and other watercraft), airplanes, rockets, artificial satellites, drones, multicopters, quadcopters, balloons, and objects carried on them, but are not limited to these. In addition, the mobile body can also be a mobile body that drives autonomously based on operating instructions.

[0681] The mobile body may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile body that moves in an unmanned manner (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing communication operations. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0682] Fig.33 1 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0683] The driving unit 41 is composed of at least one of an engine, an electric motor, or a hybrid of an engine and an electric motor. The steering unit 42 is composed of at least a steering wheel (also called a steering wheel), and steers at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by a user.

[0684] The electronic control unit 49 is composed of a microprocessor 61, a memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals from various sensors 50-58 provided in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be referred to as an electronic control unit (ECU).

[0685] The signals from the various sensors 50-58 include a current signal from a current sensor 50 for sensing the current of the motor, a speed signal of the front wheels 46 / rear wheels 47 obtained by a speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a stepping amount signal of the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a stepping amount signal of the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of the shift lever 45 obtained by a shift lever sensor 57, a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58, and the like.

[0686] The information service unit 59 is composed of various devices such as a vehicle navigation system, an audio system, a speaker, a display, a television, and a radio for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 provides various information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40 using information obtained from an external device via the communication module 60, etc.

[0687] The information service unit 59 may include input devices for accepting input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.), and may also include output devices for implementing output to the outside (e.g., display, speaker, LED light, touch panel, etc.).

[0688] The driving assistance system unit 64 is composed of various devices such as millimeter wave radar, light detection and ranging (LiDAR), camera, positioning locator (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., high-precision (High Definition (HD))) map, autonomous vehicle (Autonomous Vehicle (AV)) map, etc.), gyroscope system (e.g., inertial measurement unit (Inertial Measurement Unit (IMU))), inertial navigation unit (Inertial Navigation System (INS))), artificial intelligence (Artificial Intelligence (AI)) chip, AI processor, etc., for providing functions for preventing accidents before they happen or reducing the driver's driving load, and one or more ECUs for controlling these devices. In addition, the driving assistance system unit 64 sends and receives various information via the communication module 60 and realizes driving assistance function or autonomous driving function.

[0689] The communication module 60 can communicate with the microprocessor 61 and the structural elements of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) between the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, the microprocessor 61 and the memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58 provided in the vehicle 40 via the communication port 63.

[0690] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, various information is sent and received with the external device via wireless communication. The communication module 60 may also be located either inside or outside the electronic control unit 49. The external device may also be, for example, the above-mentioned base station 10, user terminal 20, etc. In addition, the communication module 60 may also be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (it may also function as at least one of the base station 10 and user terminal 20).

[0691] The communication module 60 may also transmit at least one of the signals from the various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may also be referred to as an input unit that receives input. For example, the PUSCH transmitted through the communication module 60 may also include information based on the above input.

[0692] The communication module 60 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) transmitted from an external device, and displays it to the information service unit 59 provided in the vehicle. The information service unit 59 may also be referred to as an output unit for outputting information (for example, outputting information to a display, a speaker, etc. based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0693] In addition, the communication module 60 stores various information received from the external device in the memory 62 that can be used by the microprocessor 61. The microprocessor 61 can also control the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, and various sensors 50-58 of the vehicle 40 based on the information stored in the memory 62.

[0694] In addition, the base station in the present disclosure may also be rewritten as a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is rewritten as communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be rewritten as terms corresponding to inter-terminal communication (for example, "sidelink"). For example, uplink channels, downlink channels, etc. may also be rewritten as sidelink channels.

[0695] Likewise, the user terminal in the present disclosure may be rewritten as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0696] In the present disclosure, operations are assumed to be performed by a base station, and sometimes by its upper node depending on the situation. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal can be performed by a base station, one or more network nodes other than the base station (for example, Mobility Management Entity (MME)), Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0697] Each method / implementation method described in this disclosure may be used alone or in combination, and may be switched during execution. In addition, the processing procedures, sequences, flow charts, etc. of each method / implementation method described in this disclosure may be swapped in order as long as they are not contradictory. For example, for the method described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0698] The various modes / implementations described in the present disclosure may also 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), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (x is, for example, an integer or a decimal)), 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 (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems expanded, modified, produced or specified based on them. In addition, multiple systems can also be applied in combination (for example, LTE or LTE-A, combination with 5G, etc.).

[0699] The phrase “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on”.

[0700] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to the first and second elements does not mean that only two elements can be used or that the first element must take precedence over the second element in some form.

[0701] The term "determining" used in the present disclosure may include a variety of operations. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc. are considered to be "determining".

[0702] In addition, "judgment (decision)" may also be a situation where receiving (for example, receiving information), sending (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0703] In addition, "judgment (decision)" can also be regarded as a situation where resolving, selecting, choosing, establishing, comparing, etc. are regarded as a situation where "judgment (decision)" is performed. That is, "judgment (decision)" can also be regarded as a situation where some actions are regarded as a situation where "judgment (decision)" is performed.

[0704] In addition, "judge (decide)" can also be rewritten as "assuming (assuming)", "expecting (expecting)", "considering (considering)" and so on.

[0705] The “maximum transmit power” recorded in the present disclosure may refer to the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated UE maximum transmit power).

[0706] The terms "connected", "coupled", or all their variations used in this disclosure refer to all direct or indirect connections or combinations between two or more elements, and can include the situation where one or more intermediate elements exist between the two elements that are "connected" or "coupled" to each other. The combination or connection between the elements can be physical, logical, or a combination thereof. For example, "connection" can also be rewritten as "access".

[0707] In the present disclosure, when two elements are connected, it is possible to consider being "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0708] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same manner as "different".

[0709] When the terms "include", "including", and variations thereof are used in the present disclosure, these terms have an inclusive meaning similar to the term "comprising". Furthermore, the term "or" used in the present disclosure does not have an exclusive OR meaning.

[0710] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0711] In the present disclosure, "below", "less than", "above", "more than", "equal to", etc. may also be rephrased with each other. Furthermore, in the present disclosure, terms meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. are not limited to the original level, comparative level and superlative level, but may also be rephrased with each other. Furthermore, in the present disclosure, terms meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. may also be rephrased with each other as expressions with "ith" (i is an arbitrary integer) added, not limited to the original level, comparative level and superlative level (for example, "highest" may also be rephrased with "i-th highest").

[0712] In the present disclosure, “of,” “for,” “regarding,” “related to,” “associated with,” etc. may also be replaced by each other.

[0713] The invention involved in the present disclosure has been described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered mode without departing from the gist and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.

Claims

1. A terminal having: A receiving unit, receiving CSI resource setting information associated with a plurality of channel state information CSI resource sets; and The control unit controls the sending of a CSI report, wherein the CSI report indicates measurement results related to one or more CSI resource sets selected from the multiple CSI resource sets.

2. The terminal according to claim 1, wherein: The one or more CSI resource sets is a CSI resource set, The CSI report includes a field indicating the one CSI resource set, and does not include measurement results related to CSI resource sets other than the one CSI resource set.

3. The terminal according to claim 1, wherein: The more than one CSI resource sets are more than one CSI resource sets, The CSI report includes a plurality of fields respectively indicating the more than one CSI resource sets.

4. A wireless communication method of a terminal, comprising: The step of receiving information of CSI resource settings associated with a plurality of channel state information CSI resource sets; and A step of controlling sending a CSI report is performed, wherein the CSI report indicates measurement results related to one or more CSI resource sets selected from the plurality of CSI resource sets.

5. A base station, comprising: A sending unit, sending CSI resource setting information associated with a plurality of channel state information CSI resource sets; and The receiving unit receives a CSI report, wherein the CSI report indicates measurement results related to one or more CSI resource sets selected from the multiple CSI resource sets.

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