Terminal, wireless communication method, base station and system

Abstract

The present invention enables appropriate CSI reporting with respect to a non-serving cell. A terminal according to an aspect of the present disclosure comprises: a receiving unit for receiving a separate channel state information (CSI) report configuration with respect to each of a reference signal for a serving cell and a reference signal for a non-serving cell, or a single CSI report configuration including both the reference signal for a serving cell and the reference signal for a non-serving cell; and a control unit for controlling the CSI report on the basis of the separate CSI report configurations or the single CSI report configuration.

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 technology]

[0002] In Universal Mobile Telecommunications System (UMTS) networks, Long Term Evolution (LTE) was specified with the aim of achieving higher data rates and lower latency (Non-Patent Document 1). Also, LTE-Advanced (3GPP Rel. 10-14) was specified with the aim of achieving higher capacity and more advanced features than LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9).

[0003] Successor systems to LTE (e.g., 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 or later) are also being considered.

[0004] In existing LTE systems (e.g., 3GPP Rel. 8-14), a user equipment (UE) transmits uplink control information (UCI) using at least one of an UL data channel (e.g., a Physical Uplink Shared Channel (PUSCH)) and an UL control channel (e.g., a Physical Uplink Control Channel (PUCCH)). [Prior art documents] [Non-patent literature]

[0005] [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 [Problem to be solved by the invention]

[0006] In future wireless communication systems (e.g., NR), for example, a case is being considered in which multiple transmission / reception points (TRPs) (multi-TRPs) each transmit a separate control signal to a UE, and the multi-TRPs transmit a data signal. In a multi-master mode, a configuration is being considered in which different physical cell IDs are set for multiple TRPs.

[0007] However, in the previous NR specifications, Layer 1 (L1) CSI reporting of synchronization signal blocks (SSBs) of non-serving cells has not been fully considered, which may result in inappropriate CSI reporting for non-serving cells.

[0008] Therefore, an object of the present disclosure is to provide a terminal, a radio communication method, and a base station that are capable of performing appropriate CSI reporting for non-serving cells. [Means for solving the problem]

[0009] A terminal according to one aspect of the present disclosure includes: Synchronization Signal Blocks (SSBs) associated with the serving cell's Physical Cell ID (PCI) and SSBs associated with the non-serving cell's PCI Both Settings One that includes Channel state information ( CSI )resource a receiving unit for receiving the setting; One CSI resource configurationand a control unit that controls CSI reporting based on the [Effects of the Invention]

[0010] According to one aspect of the present disclosure, appropriate CSI reporting can be performed for non-serving cells. [Brief explanation of the drawings]

[0011] [Figure 1] 1A-1D are diagrams illustrating an example of a multi-TRP scenario. [Figure 2] 2A and 2B are diagrams showing an example of an intra-cell TRP and an example of an inter-TRP, respectively. [Figure 3] FIG. 3 is a diagram illustrating a first example of RRC settings. [Figure 4] FIG. 4 is a diagram illustrating a second example of RRC settings. [Figure 5] FIG. 5 is a diagram illustrating a third example of RRC settings. [Figure 6] FIG. 6 is a diagram illustrating an overview of the CSI reporting configuration of the RRC. [Figure 7] 7A and 7B are diagrams illustrating a portion of a CSI resource configuration for RRC and a portion of a CSI-SSB resource set, respectively. [Figure 8] FIG. 8 is a diagram illustrating an example of a CSI-SSB-ResourceSet in the first embodiment. [Figure 9] FIG. 9 is a diagram illustrating an example of a CSI-SSB-ResourceSet in aspect 2-1. [Figure 10] FIG. 10 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 11] FIG. 11 is a diagram illustrating an example of the configuration of a base station according to an embodiment. [Figure 12] FIG. 12 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. [Figure 13]FIG. 13 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] (CSI report) In NR, a UE measures a channel state using a predetermined reference signal (or a resource for the reference signal) and feeds back (reports) channel state information (CSI) to a base station.

[0013] The UE may measure the channel state using a Channel State Information-Reference Signal (CSI-RS), a Synchronization Signal / Physical Broadcast Channel (SS / PBCH) block, a Synchronization Signal (SS), a Demodulation Reference Signal (DMRS), etc.

[0014] The CSI-RS resources may include at least one of a non-zero power (NZP) CSI-RS and a CSI-Interference Management (IM). An SS / PBCH block is a block including a synchronization signal (e.g., a primary synchronization signal (PSS) or a secondary synchronization signal (SSS)) and a PBCH (and corresponding DMRS), and may be referred to as an SS block (SSB). An SSB index may be assigned to the time position of the SSB within a half-frame.

[0015] The CSI may include at least one of a channel quality indicator (CQI), a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), a SS / PBCH block resource indicator (SS / PBCH block indicator (SSBRI), a layer indicator (LI), a rank indicator (RI), a Layer 1 (L1)-Reference Signal Received Power (RSRP), a L1-Reference Signal Received Quality (RSRQ), a L1-Signal to Interference plus Noise Ratio (SINR), a L1-Signal to Noise Ratio (SNR), and the like.

[0016] The CSI may have multiple parts. The first part of the CSI (CSI Part 1) may include information with a relatively small number of bits (e.g., RI). The second part of the CSI (CSI Part 2) may include information with a relatively large number of bits (e.g., CQI), such as information determined based on CSI Part 1.

[0017] Methods of CSI feedback under consideration include (1) periodic CSI (P-CSI) reporting, (2) aperiodic CSI (A(AP)-CSI) reporting, and (3) semi-persistent CSI (SP-CSI) reporting.

[0018] The UE may be notified of information related to CSI reporting (which may be referred to as CSI reporting configuration information) using higher layer signaling, physical layer signaling (e.g., Downlink Control Information (DCI)), or a combination thereof. The CSI reporting configuration information may be configured using, for example, the RRC information element "CSI-ReportConfig."

[0019] Here, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0020] The MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (MAC PDU), etc. The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0021] The CSI reporting configuration information may include, for example, information regarding a reporting period, an offset, etc., which may be expressed in a predetermined time unit (e.g., slot unit, subframe unit, symbol unit, etc.). The CSI reporting configuration information may include a configuration ID (CSI-ReportConfigId). The configuration ID may identify parameters such as the type of CSI reporting method (e.g., whether it is SP-CSI or not), the reporting period, etc. The CSI reporting configuration information may include information (CSI-ResourceConfigId) indicating which signal (or which signal resource) is used to report the measured CSI.

[0022] (Beam Management) Up until now, Rel-15 NR has been studying beam management (BM) methods. In this beam management, beam selection is being considered based on the L1-RSRP reported by the UE. Changing (switching) the beam of a certain signal / channel may be equivalent to changing the Transmission Configuration Indication state of that signal / channel.

[0023] The beam selected by beam selection may be a transmission beam (Tx beam) or a reception beam (Rx beam). Also, the beam selected by beam selection may be a beam of the UE or a beam of the base station.

[0024] The UE may report (transmit) measurement results for beam management using the PUCCH or PUSCH. The measurement results may be CSI including at least one of L1-RSRP, L1-RSRQ, L1-SINR, L1-SNR, etc. The measurement results may also be called beam measurements, beam measurement results, beam reports, beam measurement reports, etc.

[0025] The CSI measurement for the beam report may include interference measurement. The UE may measure channel quality, interference, etc. using resources for CSI measurement and derive a beam report. The resources for CSI measurement may be, for example, at least one of resources of SS / PBCH blocks, resources of CSI-RS, other reference signal resources, etc. Configuration information for CSI measurement reporting may be configured in the UE using higher layer signaling.

[0026] The beam report may include at least one of channel quality measurement and interference measurement results. The channel quality measurement results may include, for example, L1-RSRP. The interference measurement results may include L1-SINR, L1-SNR, L1-RSRQ, or other interference-related metrics (e.g., any metrics other than L1-RSRP).

[0027] Note that resources for CSI measurement for beam management may be referred to as beam measurement resources. Furthermore, signals / channels for which the CSI is measured may be referred to as beam measurement signals. Furthermore, CSI measurement / reporting may be interpreted as at least one of measurement / reporting for beam management, beam measurement / reporting, radio link quality measurement / reporting, etc.

[0028] The CSI reporting configuration information that takes into account current NR beam management is included in the RRC information element "CSI-ReportConfig." The information in the RRC information element "CSI-ReportConfig" is explained below.

[0029] The CSI reporting configuration information (CSI-ReportConfig) may include reporting quantity information ("report quantity", which may be expressed as the RRC parameter "reportQuantity"), which is information on parameters to be reported. The reporting quantity information is defined as an ASN.1 object type called "choice type". Therefore, one of the parameters (cri-RSRP, ssb-Index-RSRP, etc.) defined as the reporting quantity information is set.

[0030] A UE that has an upper layer parameter (e.g., the RRC parameter "groupBasedBeamReporting") included in the CSI reporting configuration information enabled may include multiple beam measurement resource IDs (e.g., SSBRI, CRI) and multiple corresponding measurement results (e.g., L1-RSRP) in the beam report for each reporting configuration.

[0031] A UE that has one or more numbers of RS resources to report configured by higher layer parameters included in the CSI reporting configuration information (e.g., the RRC parameter "nrofReportedRS") may include in the beam report, for each reporting configuration, one or more beam measurement resource IDs and one or more corresponding measurement results (e.g., L1-RSRP).

[0032] (TCI, spatial relations, QCL) In NR, it is being considered to control the reception processing (e.g., at least one of reception, demapping, demodulation, and decoding) and transmission processing (e.g., at least one of transmission, mapping, precoding, modulation, and encoding) in the UE of at least one of a signal and a channel (referred to as a signal / channel) based on the transmission configuration indication state (TCI state).

[0033] The TCI state may represent that which is applied to a downlink signal / channel, and the equivalent of the TCI state which is applied to an uplink signal / channel may be expressed as a spatial relation.

[0034] The TCI state is information about the quasi-co-location (QCL) of signals / channels, and may also be called spatial reception parameters, spatial relation information, etc. The TCI state may be configured in the UE for each channel or signal.

[0035] A QCL is an index that indicates the statistical properties of a signal / channel. For example, if a signal / channel has a QCL relationship with another signal / channel, it may mean that it can be assumed that at least one of the Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (e.g., spatial Rx parameter) is the same between these different signals / channels (i.e., they are QCLs with respect to at least one of these).

[0036] The spatial reception parameters may correspond to a reception beam (e.g., a reception analog beam) of the UE, and the beam may be determined based on a spatial QCL. A QCL (or at least one element of a QCL) in the present disclosure may be replaced with an sQCL (spatial QCL).

[0037] A plurality of types (QCL types) of QCLs may be defined. For example, four QCL types A and B may be provided, each having different parameters (or parameter sets) that can be assumed to be the same. The parameters (which may also be referred to as QCL parameters) are listed below: QCL Type A (QCL-A): Doppler shift, Doppler spread, mean delay and delay spread, QCL Type B (QCL-B): Doppler shift and Doppler spread, QCL Type C (QCL-C): Doppler shift and mean delay, · QCL Type D (QCL-D): Spatial reception parameters.

[0038] The assumption by a UE that a given Control Resource Set (CORESET), channel, or reference signal is in a specific QCL (e.g., QCL type D) relationship with another CORESET, channel, or reference signal may be referred to as a QCL assumption.

[0039] The UE may determine at least one of a transmit beam (Tx beam) and a receive beam (Rx beam) for a signal / channel based on the TCI condition or QCL assumption of the signal / channel.

[0040] The TCI state may be, for example, information about the QCL between the target channel (in other words, the Reference Signal (RS) for the channel) and another signal (e.g., another RS). The TCI state may be set (indicated) by higher layer signaling, physical layer signaling, or a combination thereof.

[0041] In the present disclosure, higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, and the like, or a combination thereof.

[0042] The MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0043] The physical layer signaling may be, for example, Downlink Control Information (DCI).

[0044] The channel for which the TCI state or spatial relationship is set (specified) may be, for example, at least one of a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), and an uplink control channel (Physical Uplink Control Channel (PUCCH)).

[0045] Furthermore, the RS that has a QCL relationship with the channel may be, for example, at least one of a Synchronization Signal Block (SSB), a Channel State Information Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), a CSI-RS for tracking (also called a Tracking Reference Signal (TRS)), and a QCL detection reference signal (also called a QRS).

[0046] An SSB is a signal block that includes at least one of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). An SSB may also be referred to as an SS / PBCH block.

[0047] A TCI state information element ("TCI-state IE" in RRC) configured by higher layer signaling may include one or more pieces of QCL information ("QCL-Info"). The QCL information may include at least one of information about an RS having a QCL relationship (RS relationship information) and information indicating a QCL type (QCL type information). The RS relationship information may include information such as an index of the RS (e.g., an SSB index, a Non-Zero-Power (NZP) CSI-RS resource identifier), an index of a cell in which the RS is located, and an index of a Bandwidth Part (BWP) in which the RS is located.

[0048] In Rel. 15 NR, both QCL type A RS and QCL type D RS, or only QCL type A RS, can be configured for a UE as the TCI state of at least one of the PDCCH and PDSCH.

[0049] When a TRS is configured as an RS for QCL Type A, unlike a demodulation reference signal (DMRS) for a PDCCH or a PDSCH, the same TRS is expected to be transmitted periodically over a long period of time. The UE can measure the TRS and calculate the average delay, delay spread, etc.

[0050] A UE that has the TRS configured as a QCL Type A RS in the TCI state of a PDCCH or PDSCH DMRS can assume that the QCL Type A parameters (average delay, delay spread, etc.) of the PDCCH or PDSCH DMRS and the TRS are the same, and can therefore determine the Type A parameters (average delay, delay spread, etc.) of the PDCCH or PDSCH DMRS from the measurement result of the TRS. When performing channel estimation for at least one of the PDCCH and the PDSCH, the UE can perform more accurate channel estimation using the measurement result of the TRS.

[0051] A UE configured with a QCL type D RS can determine a UE receive beam (spatial domain receive filter, UE spatial domain receive filter) using the QCL type D RS.

[0052] An RS of QCL type X in a TCI state may refer to an RS that has a relationship of QCL type X with (the DMRS of) a certain channel / signal, and this RS may be called a QCL source of QCL type X in the TCI state.

[0053] (Multi-TRP) In NR, one or more Transmission / Reception Points (TRPs) (multi-TRP) are considered to perform DL transmission to a UE using one or more panels (multi-panel), and a UE is considered to perform UL transmission to one or more TRPs.

[0054] Note that multiple TRPs may correspond to the same cell identifier (ID), or different cell IDs. The cell ID may be a physical cell ID or a virtual cell ID.

[0055] 1A-1D illustrate an example of a multi-TRP scenario, assuming, but not limited to, that each TRP is capable of transmitting four different beams.

[0056] 1A shows an example of a case where only one TRP (TRP1 in this example) of multiple TRPs transmits to the UE (this may be referred to as single mode, single TRP, etc.). In this case, TRP1 transmits both control signals (PDCCH) and data signals (PDSCH) to the UE.

[0057] 1B shows an example of a case where only one TRP (TRP1 in this example) transmits a control signal to a UE, and the TRP transmits a data signal (this case may be called a single master mode). The UE receives each PDSCH transmitted from the TRP based on one Downlink Control Information (DCI).

[0058] Figure 1C shows an example of a case where each of the multiple TRPs transmits a part of the control signal to the UE, and the multiple TRPs transmit data signals (this may be called a master-slave mode). TRP1 may transmit part 1 of the control signal (DCI), and TRP2 may transmit part 2 of the control signal (DCI). Part 2 of the control signal may depend on part 1. The UE receives each PDSCH transmitted from the multiple TRPs based on these parts of DCI.

[0059] 1D shows an example of a case where each of the multiple TRPs transmits a separate control signal to the UE, and the multiple TRPs transmit data signals (this may be referred to as a multi-master mode). A first control signal (DCI) may be transmitted from TRP1, and a second control signal (DCI) may be transmitted from TRP2. The UE receives each PDSCH transmitted from the multiple TRPs based on these DCIs.

[0060] When multiple PDSCHs (which may be referred to as multiple PDSCHs) from multiple TRPs as shown in Figure 1B are scheduled using one DCI, the DCI may be referred to as a single DCI (single PDCCH). Also, when multiple PDSCHs from multiple TRPs as shown in Figure 1D are scheduled using multiple DCIs, these multiple DCIs may be referred to as multiple DCIs (multiple PDCCHs).

[0061] Each TRP of a multi-TRP may transmit a different code word (CW) and a different layer. Non-Coherent Joint Transmission (NCJT) is being considered as one form of multi-TRP transmission.

[0062] In the NCJT, for example, TRP1 performs modulation mapping and layer mapping on a first codeword to transmit a first PDSCH using a first number of layers (e.g., two layers) with a first precoding, and TRP2 performs modulation mapping and layer mapping on a second codeword to transmit a second number of layers (e.g., two layers) with a second precoding.

[0063] Note that multiple PDSCHs (multi-PDSCHs) that are non-coherent may be defined as partially or completely overlapping in at least one of the time and frequency domains, i.e., a first PDSCH from a first TRP and a second PDSCH from a second TRP may overlap in at least one of the time and frequency resources.

[0064] The first PDSCH and the second PDSCH may be assumed to be not quasi-co-located (Quasi-Co-Location (QCL)). Reception of multiple PDSCHs may be interpreted as simultaneous reception of PDSCHs that are not of a predetermined QCL type (e.g., QCL type D).

[0065] In URLLC for multiple TRPs, it is considered that PDSCH (transport block (TB) or codeword (CW)) repetition across multiple TRPs is supported. Repetition schemes (URLLC schemes, e.g., schemes 1, 2a, 2b, 3, and 4) across multiple TRPs in the frequency domain, layer (spatial) domain, or time domain are supported. In scheme 1, multiple PDSCHs from multiple TRPs are space division multiplexed (SDM). In schemes 2a and 2b, PDSCHs from multiple TRPs are frequency division multiplexed (FDM). In scheme 2a, the redundancy version (RV) is the same for multiple TRPs. In scheme 2b, the RVs may be the same or different for multiple TRPs. In schemes 3 and 4, multiple PDSCHs from multiple TRPs are time division multiplexed (TDM). In scheme 3, multiple PDSCHs from multiple TRPs are transmitted in one slot. In scheme 4, multiple PDSCHs from multiple TRPs are transmitted in different slots.

[0066] Such a multi-TRP scenario allows for more flexible transmission control using good quality channels.

[0067] In the multi-master mode as shown in FIG. 1D, two configurations are possible: one in which the same physical cell ID is set for multiple TRPs (intra-TRP mobility, intra-cell TRP mobility, intra-cell mobility, or intra-cell multi-TRP operation), and one in which different physical cell IDs are set for multiple TRPs (inter-TRP mobility, inter-cell TRP mobility, inter-cell mobility, or inter-cell multi-TRP operation).

[0068] Figure 2A shows an example of intra-cell mobility. As shown in Figure 2A, the same physical cell ID (PCI1) is set for TRP1 and TRP2. In this case, the SSB (SSB index) transmitted by TRP1 and the SSB transmitted by TRP2 must be different. In the example of Figure 2A, the SSBs of TRP1 are 0-31, and the SSBs of TRP2 are 32-63.

[0069] FIG. 2B is a diagram showing an example of inter-cell mobility. As shown in FIG. 2B, different physical cell IDs (PCI1, PCI2) are configured for TRP1 and TRP2. In this case, the SSB transmitted by TRP1 and the SSB transmitted by TRP2 may overlap or may be different. In the example of FIG. 2B, the SSBs of TRP1 and TRP2 may both be 0-63. Alternatively, the SSBs of TRP1 may be 0-31, and the SSBs of TRP2 may be 32-63. In this case, the RS in the TCI state of PDSCH1 / PDSCH2 is PCI1 or PCI2.

[0070] (New RRC setting example) When different physical cell IDs are configured for multiple TRPs, the UE may receive information about a downlink reference signal (DL RS) from a second TRP among the multiple TRPs via higher layer signaling (RRC), and control transmission of a UL signal based on the information. The information may include, for example, "trp-ToAddModList", "trp-ToReleaseList", "physCellId" (physical cell ID), "TRP-ID", etc., which will be described later. "TRP-ID" may be the identifier (ID) of the second TRP.

[0071] Fig. 3 is a diagram showing a first example of RRC settings. In Fig. 3, the RRC parameter "ServingCellConfig" includes "trp-ToAddModList" indicating a list of TRPs to be added or changed, "trp-ToReleaseList" indicating a list of TRPs to be released, etc. Furthermore, the RRC parameter "TRP-Config" includes "TRP-ID", "physCellId", information about SSBs (SSB positions (e.g., "ssb-PositionsInBurst"), SSB periodicity (e.g., "ssb-periodicityServingCell"), etc.), etc.

[0072] "ServingCellConfig" in the present disclosure may be read as "ServingCellConfigCommon." For example, the TRP ID of the serving cell corresponding to "ServingCellConfig" may be 0, and TRP-IDs starting from 1 for other TRPs (additional TRPs) may be set in "trp-Config." The TRP-ID of the second TRP may be 1. Note that in FIG. 3, the contents of "TRP-Config" (such as "TRP-ID," "physCellId," and information related to SSB) may be included in the "trp-ToAddModList" section of "ServingCellConfig."

[0073] FIG. 4 is a diagram illustrating a second example of RRC configuration. In the diagram illustrated in FIG. 4, "QCL-Info-r17," which is an RRC parameter related to QCL information, includes "trp" ("TRP-ID") and the like. In the present disclosure, "QCL-Info-r17" may be read as "QCL-Info" or "SpatialRelationInfo." In the present disclosure, "r17" indicates 3GPP Rel. 17, but may be another name indicating a release other than Rel. 15 / 16. The QCL configuration indicated by "QCL-Info-r17" may correspond to each TRP (each TRP ID) of the serving cell. If the received "TRP-ID" is 0, the UE may determine that it means the original (its own) serving cell.

[0074] The RS transmitted from the added TRP may be the source RS of the QCL / spatial relationship information. "QCL-Info-r17" may be configured in all BWPs of the serving cell. Then, information about multiple TRPs may be configured in "ServingCellConfig".

[0075] With the above-described settings, even if different physical cell IDs are set for multiple TRPs, the UE can perform appropriate communication by receiving information about the TRP of the serving cell.

[0076] (SSB and physical cell ID of non-serving cell) The UE may receive at least one of information (SSB index) and a physical cell ID about an SSB of a non-serving cell (second TRP) used to configure the TCI status / spatial relationship information. The SSB may be configured as a source RS of the QCL / spatial relationship information. At least one of the information about the SSB of the non-serving cell (second TRP) and a physical cell ID is an example of information about a downlink reference signal from the second TRP.

[0077] The source RS refers to an RS that has a QCL relationship with the channel / signal (which may also be called the target channel / RS) to which the UL TCI state is set (specified), and may be, for example, a DL RS (e.g., SSB, CSI-RS, TRS, etc.) or a UL RS (e.g., SRS, SRS for beam management, etc.).

[0078] Any target RS may be configured with the TCI state of the SSB of a non-serving cell. Restricted target RSs (e.g., only TRS) may be configured with the TCI state of the SSB of a non-serving cell.

[0079] The SSB of the non-serving cell may be configured for CSI (L1) measurement / Radio Link Monitoring (RLM) / Beam Failure Detection (BFD).

[0080] Fig. 5 is a diagram showing a third example of RRC settings. As shown in Fig. 5, the RRC parameter "QCL-Info" includes "ssb-index", "physCellId", etc. The "ssb-index" and "physCellId" are examples of information related to the SSB of the non-serving cell and a physical cell ID, as described above.

[0081] The SSBs of the non-serving cell may be used to distinguish only the PDCCH / PDSCH from the second TRP. The SSBs of the non-serving cell may be used to distinguish only the PDCCH / PDSCH and L1-RSRP / SINR beam report from the second TRP. The SSBs of the non-serving cell may be used to distinguish only the PDCCH / PDSCH and L1-RSRP / SINR beam report and RLM from the second TRP.

[0082] Since multi-TRP DL transmission is configured for each BWP, the second TRP corresponding to a different BWP may be different for a given UE. However, since "QCL-Info" and "SpatialRelationInfo" in Figure 5 are configured for each BWP, redundant configuration for each cell is not required, which allows for efficient configuration.

[0083] FIG. 6 is a diagram illustrating an overview of the CSI reporting configuration of RRC. FIG. 6 illustrates the CSI reporting configuration of RRC in 3GPP Rel. 15 / 16. As illustrated in FIG. 6, the CSI reporting configuration (CSI-ReportConfig) includes "resourcesForChannelMeasurement", "csi-IM-resourcesForInterference", "nzp-CSI-RS-resourcesForInterference", "Report quantity", etc. "resourcesForChannelMeasurement", "csi-IM-resourcesForInterference", and "nzp-CSI-RS-resourcesForInterference" correspond to the CSI resource configuration "CSI-ResourceConfig" (CSI-ResourceConfigId).

[0084] Fig. 7A is a diagram showing a portion of the CSI resource configuration of RRC. Fig. 7B is a diagram showing a portion of the CSI-SSB resource set. Figs. 7A and 7B show the RRC configuration of 3GPP Rel.15 / 16. As shown in Fig. 7A, the CSI resource configuration (CSI-ResourceConfig) includes "CSI-SSB-ResourceSetId". As shown in Fig. 7B, the CSI-SSB-resource set (CSI-SSB-ResourceSet) includes "CSI-SSB-ResourceSetId" and "SSB-Index".

[0085] However, in the previous NR specifications, Layer 1 (L1) CSI reporting by SSB of non-serving cells was not sufficiently considered. For example, the relationship between L1 CSI reporting in the serving cell and L1 CSI reporting in non-serving cells was not sufficiently considered. Also, configuration signaling (e.g., RRC) for L1 CSI reporting in non-serving cells was not sufficiently considered.

[0086] Therefore, the present inventors have conceived a terminal that can appropriately report L1 CSI for non-serving cells (and serving cells).

[0087] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0088] In the present disclosure, the terms L1 CSI report, L1 beam report, CSI report, and beam report may be interchangeable. The terms report and measurement may be interchangeable. The term L1 CSI report may be interchangeable with a measurement of L1-RSRP / L1-RSRQ / L1-SINR / L1-SNR, or a report / CSI report including L1-RSRP / L1-RSRQ / L1-SINR / L1-SNR.

[0089] In the present disclosure, the terms panel, uplink (UL) transmitting entity, TRP, TRP-ID, TRP ID, spatial relationship, control resource set (CORESET), PDSCH, codeword, base station, predetermined antenna port (e.g., demodulation reference signal (DMRS) port), predetermined antenna port group (e.g., DMRS port group), predetermined group (e.g., code division multiplexing (CDM) group, predetermined reference signal group, CORESET group), and CORESET pool may be interchangeable. Also, panel identifier (ID) and panel may be interchangeable.

[0090] In the present disclosure, cell, CC, carrier, BWP, and band may be read interchangeably.

[0091] In the present disclosure, the terms index, ID, indicator, and resource ID may be read interchangeably.

[0092] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. The wireless communication methods according to the embodiments may be applied independently or in combination. In the present disclosure, "A / B" may be interpreted as "at least one of A and B."

[0093] (Wireless communication method) First Embodiment Separate channel state information (CSI) reporting configurations (CSI-ReportConfig) may be configured for the RS of the serving cell and the RS of the non-serving cells. For example, if a synchronization signal block (SSB) is configured for L1 CSI reporting in the CSI-ReportConfig, the RS may be an SSB. A CSI resource configuration (CSI-ResourceConfig) may be configured with RSs (SSBs) from only the serving cell or RSs (SSBs) from only non-serving cells. The CSI resource configuration may be configured with NZP-CSI-RS resource configuration.

[0094] In the present disclosure, the CSI reporting configuration (CSI-ReportConfig), the CSI resource configuration (CSI-ResourceConfig), and the CSI-SSB resource set (CSI-SSB-ResourceSet) may be read as interchangeable.

[0095] Using individual CSI reporting configurations makes it possible to distinguish between the SSB of the serving cell and the SSB of a non-serving cell. For example, if a specific SSB index = 1 (#1) is configured, the SSB #1 of the serving cell is different from the SSB #1 of a non-serving cell. In such cases, the UE can distinguish between the SSB of the serving cell and the SSB of a non-serving cell.

[0096] Fig. 8 is a diagram showing an example of a CSI-SSB-ResourceSet in the first embodiment. As shown in Fig. 8, "newID" (re-indexing of non-serving cells) or "physCellId" may be configured in the CSI-SSB-ResourceSet as an RRC parameter to indicate that all SSBs in the CSI-SSB-ResourceSet are SSBs from non-serving cells. "newID" / "physCellId" correspond to TRP-ID / physCellId. TRP-ID / physCellId may correspond to "TRP-ID" in Figs. 3 and 4 and "physCellId" in Figs. 3 and 5. Configurations related to measurement of SSBs of different non-serving cells may be configured in different CSI-SSB-ResourceSets / CSI-ResourceConfigs.

[0097] For example, "newID" uses one bit when indicating the serving cell and one non-serving cell. For example, "newID" uses two bits when indicating the serving cell, non-serving cell #1, non-serving cell #2, and non-serving cell #3. Furthermore, "newID" may use more bits depending on the number of supported non-serving cells.

[0098] The advantages of configuring the "newID" compared to directly configuring the "physCellId" (PCI) are as follows: When configuring the PCI directly in the QCL / TCI state, the RRC overhead is large. The number of bits in RRC signaling for one PCI is 10 bits. If there are 64 TCI state configurations from non-serving cells, 640 bits are used. Furthermore, when configuring the SSB of a non-serving cell in L1 CSI reporting, 10 bits are used for each channel measurement resource (CMR) of the SSB of the non-serving cell. That is, the total overhead is not small. On the other hand, when using the "newID" and there is only one non-serving cell, only one bit is used to indicate the non-serving cell. Therefore, the signaling overhead can be reduced. The relationship between the "newID" and the "physCellId" may be specified in the configuration / specification.

[0099] <Second embodiment> The RS of the serving cell (e.g., SSB) and the RS of the non-serving cell (e.g., SSB) may be configured in the same CSI reporting configuration (CSI-ReportConfig) and the same CSI resource configuration (CSI-ResourceConfig), i.e., both the RS of the serving cell and the RS of the non-serving cell may be included in one CSI reporting configuration and one CSI resource configuration.

[0100] [Aspect 2-1] 9 is a diagram showing an example of a CSI-SSB-ResourceSet in aspect 2-1. As a higher layer (RRC) parameter received by the UE, the csi-SSB-ResourceList of the CSI-SSB-ResourceSet may include an SSB-Index from a serving cell or an SSB-Index from a non-serving cell.

[0101] For each SSB index, a "new ID" (re-indexing of non-serving cells) or PCI (directly) may be added, or a bitmap-like sequence ("newIDsequence") indicating the "new ID" may be added, with each bit (bit position in the sequence) mapping one-to-one to each of the SSBs (position of the SSB index in the csi-SSB-ResourceList).

[0102] Alternatively, SSBs from different cells as different CMR groups may be added in a specific order, or the SSB-index from the serving cell or the SSB-index from the non-serving cell may be set according to other formats.

[0103] The first CMR group in the csi-SSB-ResourceList may represent the serving cell, and the remaining CMRs may represent non-serving cells. For example, the first X CMRs (or the first group (CMR group) with a new ID / PCI) may represent the serving cell, the next Y CMRs (or the second group (CMR group) with a new ID / PCI) may represent non-serving cell #i, and the next Z CMRs (or the third group (CMR group) with a new ID / PCI) may represent non-serving cell #j.

[0104] 9, for example, if SSB index = (1, 5, 8, 30) and a bitmap-like sequence indicating new IDs ("newIDsequence") = (0, 1, 0, 1) are set, this may indicate SSB#1 of the serving cell, SSB#5 of the non-serving cell, SSB#8 of the serving cell, and SSB#30 of the non-serving cell. In other words, new ID=0 may indicate the serving cell, and new ID=1 may indicate the non-serving cell.

[0105] Also, multiple combinations of one csi-SSB-Resource (one SSB index in the csi-SSB-ResourceList) and one new ID / PCI (one new ID / PCI in the newIDsequence) may be set. For example, instead of the csi-SSB-ResourceList (1, 5, 8, 30) and newIDsequence (0, 1, 0, 1) in the example of Fig. 9, a list (sequence) of combinations (1, 0), (5, 1), (8, 0), (30, 1) may be set.

[0106] [Aspect 2-2] In RRC signaling, since the CSI-SSB-ResourceSet includes SSBs from a cell (e.g., as in the first embodiment), the SSBs of multiple cells may be configured in multiple CSI-SSB-ResourceSets and included in the CSI-ReportConfig (even in the case of periodic (P) CSI reporting / Semi-Persistent (SP) CSI reporting).

[0107] [others] Another reporting configuration may be, for example, the beam number to be reported. This configuration may be applied to the CSI-ReportConfig regardless of whether the SSB is from a serving cell or a non-serving cell. Different parameters (beam numbers) may be configured / defined for the serving cell and the non-serving cell (e.g., for different CSI-SSB-ResourceSets in aspect 2-2). For example, a maximum of one beam report may always be configured for each non-serving cell.

[0108] The first embodiment / second embodiment may be applied to beam reporting (CSI reporting) of only L1-RSRP or only L1-SINR, or may be applied to beam reporting (CSI reporting) of both L1-RSRP and L1-SINR.

[0109] <Third embodiment> The first embodiment / second embodiment is mainly applied to non-group-based CSI reporting (beam reporting). When group-based CSI reporting is applied, the RS of the serving cell (e.g., SSB) and the RS of the non-serving cell (e.g., SSB) may be set in the same (one) CSI reporting setting (CSI-ReportConfig) corresponding to different groups. The different groups (e.g., two groups) may be set within the same CSI-SSB-ResourceSet or within different CSI-SSB-ResourceSets within CSI-ResourceConfig.

[0110] <UE capability (UE capability)> The UE may transmit (report) at least one of the following (1) to (4) as UE capability (UE capability information).

[0111] (1) Whether it supports the setting of the non-serving cell SSB for L1 CSI reporting. In this case, depending on whether the CSI reporting is group-based or non-group-based, the same or different UE capabilities may be transmitted. (2) Whether it supports the setting of the non-serving cell SSB and serving cell SSB for L1 CSI reporting (for group-based / non-group-based CSI reporting) in CSI-ReportConfig / CSI-SSB-ResourceSet. (3) Whether it supports multiple CSI-SSB-ResourceSets (e.g., different CSI-SSB-ResourceSets for SSBs from different cells) in the CSI-ReportConfig for P CSI reporting / SP CSI reporting. (4) Whether it supports the setting of multiple non-serving cell SSBs for L1 CSI reporting in CSI-ReportConfig / CSI-ResourceConfig / CSI-SSB-ResourceSet.

[0112] (Wireless communication system) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.

[0113] 10 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0114] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0115] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0116] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and the SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0117] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are smaller than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The locations and numbers of the cells and user terminals 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

[0118] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).

[0119] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be a frequency band higher than FR2.

[0120] Furthermore, the user terminal 20 may perform communication using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.

[0121] The multiple base stations 10 may be connected by wire (for example, optical fiber conforming to the Common Public Radio Interface (CPRI), an X2 interface, or the like) or wirelessly (for example, NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0122] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may 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.

[0123] The user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.

[0124] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the radio communication system 1. For example, 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), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0125] The radio access scheme may also be called a waveform. Note that 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 UL and DL radio access schemes.

[0126] In the wireless communication system 1, 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. may be used as the downlink channel.

[0127] Furthermore, in the wireless communication system 1, 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)), etc. may be used as an uplink channel.

[0128] The PDSCH transmits user data, higher layer control information, System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit Master Information Block (MIB).

[0129] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information for at least one of the PDSCH and the PUSCH.

[0130] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as an UL grant, a UL DCI, etc. Note that the PDSCH may be interpreted as DL data, and the PUSCH may be interpreted as UL data.

[0131] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources to search for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor a CORESET associated with a certain search space based on the search space configuration.

[0132] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be called a search space set. Note that the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," "CORESET setting," etc. in the present disclosure may be read interchangeably.

[0133] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), acknowledgement information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0134] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.

[0135] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted as DL-RS.

[0136] 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 the SS (PSS, SSS) and the PBCH (and DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as reference signals.

[0137] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0138] (base station) 11 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0139] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0140] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0141] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0142] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0143] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 1211 and an RF unit 122. The receiving unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0144] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0145] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0146] The transceiver 120 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0147] The transceiver 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0148] The transceiver 120 (transmission processor 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0149] The transmitting / receiving unit 120 (RF unit 122) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna .

[0150] On the other hand, the transmitting / receiving unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting / receiving antenna .

[0151] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0152] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0153] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0154] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.

[0155] The transceiver 120 may transmit separate channel state information (CSI) reporting configurations for the reference signal of the serving cell and the reference signal of the non-serving cell, or may transmit one CSI reporting configuration including both the reference signal of the serving cell and the reference signal of the non-serving cell. The transceiver 120 may receive a CSI report based on the separate CSI reporting configurations or the one CSI reporting configuration.

[0156] (user terminal) 12 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0157] Note that this example mainly shows functional blocks of the characteristic parts of the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0158] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0159] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 220.

[0160] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured from a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0161] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0162] The transmitting / receiving antenna 230 can be configured as an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0163] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0164] The transceiver 220 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0165] The transceiver 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0166] The transceiver 220 (transmission processor 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0167] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and when transform precoding is not enabled, the transceiver unit 220 may not perform DFT processing as the transmission processing.

[0168] The transmitting / receiving unit 220 (RF unit 222) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna 230.

[0169] On the other hand, the transmitting / receiving unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting / receiving antenna 230.

[0170] The transceiver 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0171] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal. The measurement unit 223 may 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 be output to the control unit 210.

[0172] The transmitting section and receiving section of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving section 220 and the transmitting / receiving antenna 230.

[0173] In addition, the transceiver 220 may receive separate channel state information (CSI) reporting configurations for the reference signal of the serving cell and the reference signal of the non-serving cell, or one CSI reporting configuration including both the reference signal of the serving cell and the reference signal of the non-serving cell.

[0174] When the transceiver 220 receives the separate CSI reporting configuration, the CSI resource configuration may be configured with the reference signals from the serving cell only or the reference signals from the non-serving cells only.

[0175] When the transceiver 220 receives the one CSI reporting configuration, it may receive higher layer parameters including an index of the reference signal from the serving cell or an index of the reference signal from the non-serving cell.

[0176] When group-based CSI reporting is applied, the transceiver 220 may receive one CSI reporting configuration in which the reference signal of the serving cell and the reference signal of the non-serving cell are configured, and the one CSI reporting configuration corresponds to different groups.

[0177] The control unit 210 may control the CSI reporting based on separate CSI reporting configurations or the single CSI reporting configuration.

[0178] (Hardware configuration) The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may also be realized by combining the single device or multiple devices with software.

[0179] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As mentioned above, the implementation method of each is not particularly limited.

[0180] For example, a base station, a user terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 13 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0181] In this disclosure, terms such as apparatus, circuit, device, section, unit, etc. may be read interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0182] For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, serially, or in other ways. Furthermore, processor 1001 may be implemented by one or more chips.

[0183] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading predetermined software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0184] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transmission / reception unit 120 (220), etc. may be realized by the processor 1001.

[0185] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be realized by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be realized in a similar manner.

[0186] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, a cache, a main memory, or the like. The memory 1002 may store executable programs (program codes), software modules, and the like for implementing a wireless communication method according to an embodiment of the present disclosure.

[0187] Storage 1003 is a computer-readable recording medium and may be constituted by at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as a secondary storage device.

[0188] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0189] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0190] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0191] Furthermore, the base station 10 and the user terminal 20 may 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), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using such hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0192] (Variation) Note that terms explained in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0193] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0194] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, a subcarrier spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI), the number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transceiver in the frequency domain, and a specific windowing process performed by a transceiver in the time domain.

[0195] A slot may be composed of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol), and may be a time unit based on numerology.

[0196] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0197] A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units for transmitting signals. The radio frame, the subframe, the slot, the minislot, and the symbol may be referred to by other names corresponding to the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be interchangeable.

[0198] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot 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 (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

[0199] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. However, the definition of TTI is not limited to this.

[0200] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a 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.

[0201] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0202] A TTI having a time length of 1 ms may be called a regular TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0203] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0204] 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 in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

[0205] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0206] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0207] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0208] A Bandwidth Part (BWP), which may also be referred to as a fractional bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a common reference point of the carrier. PRBs may be defined in a given BWP and numbered within that BWP.

[0209] The BWP may include an UL BWP (a BWP for UL) and a DL BWP (a BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0210] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0211] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0212] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0213] The names used for parameters and the like in this disclosure are not intended to be limiting in any way. Furthermore, the mathematical expressions and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0214] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0215] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.

[0216] Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0217] Notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0218] Note that the physical layer signaling may be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be called an RRC message, such as an RRC connection setup message or an RRC connection reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0219] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0220] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value represented by true or false, or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0221] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0222] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0223] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0224] 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," "transmit 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," "panel," etc. may be used interchangeably.

[0225] In this disclosure, terms such as "base station (BS)," "radio 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," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0226] A base station can accommodate one or more (e.g., 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 be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within this coverage.

[0227] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0228] A mobile station may also be 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, handset, user agent, mobile client, client, or some other suitable terminology.

[0229] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, or the mobile object itself. The mobile object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0230] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as uplink channel and downlink channel may be read as sidelink channel.

[0231] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0232] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME) and a Serving-Gateway (S-GW)), or a combination thereof.

[0233] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the specific order presented.

[0234] Each aspect / embodiment described in the present disclosure may be related 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) (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 The present invention may be applied to systems that use 802.20, Ultra-Wide Band (UWB), Bluetooth (registered trademark), or other appropriate wireless communication methods, or to next-generation systems that are based on and extend these systems. Furthermore, the present invention may be applied to a combination of multiple systems (for example, a combination of LTE or LTE-A and 5G).

[0235] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0236] The term "determining," as used in this disclosure, may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, etc.

[0237] Additionally, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.

[0238] Also, "decision" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. In other words, "decision" may be considered to be "deciding" on some action.

[0239] Furthermore, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," or the like.

[0240] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0241] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0242] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, etc., as some non-limiting and non-exhaustive examples.

[0243] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0244] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0245] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0246] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and explanatory and does not impose any limiting meaning on the invention according to the present disclosure.

[0247] This application is based on Japanese Patent Application No. 2021-12255, filed on January 28, 2021, the contents of which are incorporated herein in their entirety.

Claims

1. A receiver for receiving one channel state information (CSI) resource configuration including configurations of both Synchronization Signal Blocks (SSBs) associated with a Physical Cell ID (PCI) of a serving cell and SSBs associated with PCIs of non-serving cells; a control unit that controls CSI reporting based on the one CSI resource configuration; A terminal having:

2. Further comprising a transmitter that transmits capability information indicating that the SSB setting of the non-serving cell corresponding to the CSI report is supported. The terminal according to claim 1 .

3. Receiving a channel state information (CSI) resource configuration that includes configurations of both Synchronization Signal Blocks (SSBs) associated with a Physical Cell ID (PCI) of a serving cell and SSBs associated with PCIs of non-serving cells; controlling CSI reporting based on the one CSI resource configuration; A wireless communication method for a terminal having the above configuration.

4. A transmitter that transmits one channel state information (CSI) resource configuration that includes configurations of both Synchronization Signal Blocks (SSBs) associated with a physical cell ID (PCI) of a serving cell and SSBs associated with PCIs of non-serving cells; a control unit for controlling reception of a CSI report based on the one CSI resource configuration; A base station having

5. A system including a terminal and a base station, The terminal A receiver for receiving a channel state information (CSI) resource configuration including configurations of both Synchronization Signal Blocks (SSBs) associated with a Physical Cell ID (PCI) of a serving cell and SSBs associated with PCIs of non-serving cells; a control unit that controls CSI reporting based on the one CSI resource configuration, The base station a control unit for controlling reception of the CSI report; system.

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