Terminal, wireless communication method, base station and system

Abstract

A terminal according to one aspect of the present disclosure comprises: a reception unit that receives information relating to at least one of a resource setting for channel state information relating to one or more candidate cells corresponding to different frequencies and a report setting for the channel state information; and a control unit that executes control on the basis of the information relating to at least one of the resource setting for the channel state information and the report setting for the channel state information such as to report channel state information including at least one of L1-RSRP (reference signal received power) and an L1-SINR (signal to interference plus noise ratio) for the one or more candidate cells.

Description

[Technical Field]

[0001] The present disclosure relates to a terminal and a wireless communication method in a next-generation mobile communication system. 、 base station and systems Regarding. [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. [Prior art documents] [Non-patent literature]

[0004] [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]

[0005] In future wireless communication systems (e.g., wireless communication systems after Rel. 16 / 5G), it is expected that communications will be controlled based on inter-cell mobility including non-serving cells, or inter-cell mobility using multiple transmission / reception points (e.g., Multi-TRP (MTRP)).

[0006] In addition, in inter-cell mobility, it is assumed that a serving cell and a candidate cell are set and switching from the serving cell to the candidate cell is performed. In this case, it is assumed that CSI measurement / reporting (e.g., measurement and reporting of L1-RSRP / L1-SINR) is supported for the candidate cell (or the frequency of the candidate cell).

[0007] However, when a candidate cell is configured, how to control CSI measurement / reporting becomes an issue. If CSI measurement / reporting is not performed appropriately, communication quality may be degraded.

[0008] The present disclosure has been made in consideration of such points, and provides a terminal and a wireless communication method that are capable of appropriately controlling measurements / reports regarding a candidate cell even when the candidate cell is set. 、 base station and systems One of the aims is to provide [Means for solving the problem]

[0009] A terminal according to one aspect of the present disclosure includes: Multiple Frequency Oke Channel state information of one or more candidate cells (CSI) report If supported, the capability for the number of CSIs reported across the multiple frequencies Information sending believe sending Shinbe and the aforementioned CSI Resource Settings Information about and CSI reporting facility Certainly Based on the information regarding CSI report of and a control unit for controlling the [Effects of the Invention]

[0010] According to one aspect of the present disclosure, even when a candidate cell is configured, measurements / reports regarding the candidate cell can be appropriately controlled. [Brief explanation of the drawings]

[0011] [Figure 1] 1A and 1B are diagrams illustrating an example of inter-cell mobility. [Figure 2] 2A and 2B are diagrams showing another example of inter-cell mobility. [Figure 3] FIG. 3 is a diagram showing an example of configuration example 1-3 when a candidate cell is supported. [Figure 4] 4A to 4C are diagrams showing an example of switching between candidate cells / candidate cell groups by L1 / L2 signaling in configuration examples 1 to 3 when candidate cells are supported. [Figure 5] FIG. 5 is a diagram illustrating an overview of the CSI reporting configuration of the RRC. [Figure 6] FIG. 6 is a diagram showing a part of the CSI resource configuration of Rel.17. [Figure 7] FIG. 7 is a diagram showing a part of the CSI-SSB resource set of Rel. 17. [Figure 8] FIG. 8 is a diagram showing the configuration for L3 measurement / reporting in Rel.17. [Figure 9] FIG. 9 is a diagram illustrating an example of a CSI report according to the first embodiment. [Figure 10] FIG. 10 is a diagram illustrating an example of a candidate cell set according to the third embodiment. [Figure 11] FIG. 11 is a diagram illustrating another example of the candidate cell set according to the third embodiment. [Figure 12]FIG. 12 is a diagram illustrating another example of the candidate cell set according to the third embodiment. [Figure 13] FIG. 13 is a diagram illustrating an example of a candidate cell set according to the fourth embodiment. [Figure 14] FIG. 14 is a diagram illustrating another example of the candidate cell set according to the fourth embodiment. [Figure 15] FIG. 15 is a diagram illustrating another example of the candidate cell set according to the fourth embodiment. [Figure 16] FIG. 16 is a diagram illustrating another example of the candidate cell set according to the fourth embodiment. [Figure 17] FIG. 17 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 18] FIG. 18 is a diagram illustrating an example of the configuration of a base station according to an embodiment. [Figure 19] FIG. 19 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. [Figure 20] FIG. 20 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. [Figure 21] FIG. 21 is a diagram illustrating an example of a vehicle according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] (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 signal / channel) based on the transmission configuration indication state (TCI state).

[0013] 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.

[0014] 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.

[0015] 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).

[0016] 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).

[0017] 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.

[0018] The assumption by a UE that a Control Resource Set (CORESET), channel, or reference signal has a specific QCL (e.g., QCL type D) relationship with another CORESET, channel, or reference signal may be referred to as a QCL assumption.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] The physical layer signaling may be, for example, Downlink Control Information (DCI).

[0024] The channel / signal to which the TCI state is applied may be called a target channel / reference signal (target channel / RS), or simply a target, and the other signal may be called a reference reference signal (reference RS), source RS, or simply a reference.

[0025] 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)).

[0026] Furthermore, the RS that has a QCL relationship with the channel may be at least one of, for example, 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)), a QCL detection reference signal (also called a QRS), and a Demodulation Reference Signal (DMRS).

[0027] 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.

[0028] 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.

[0029] (Inter-cell mobility) In NR, it is considered that one or more Transmission / Reception Points (TRPs) (Multi-TRPs (MTRPs)) perform DL transmission to a UE, and it is also considered that a UE performs UL transmission to one or more TRPs.

[0030] During inter-cell mobility (e.g., L1 / L2 inter cell mobility), a UE may receive channels / signals from multiple cells / TRPs (see Figures 1A and 1B).

[0031] FIG. 1A illustrates an example of inter-cell mobility (e.g., single-TRP inter-cell mobility) including a non-serving cell. A UE may be configured with one TRP (or a single TRP) in each cell. Here, the UE receives channels / signals from the base station / TRP of cell #1, which is the serving cell, and the base station / TRP of cell #3, which is not the serving cell (non-serving cell). For example, this corresponds to a case where the UE switches / switches from cell #1 to cell #3 (e.g., a fast cell switch).

[0032] In this case, the selection of the port (e.g., antenna port) / TRP may be performed dynamically or based on the TCI status indicated or updated by the DCI / MAC CE. Here, it is shown that different physical cell ID (e.g., PCI) configurations are supported for cell #1 and cell #3.

[0033] FIG. 1B illustrates an example of a multi-TRP scenario (e.g., multi-TRP inter-cell mobility). A UE may be configured with multiple (e.g., two) TRPs (or different CORESET pool indices) in each cell. Here, the UE receives channels / signals from TRP#1 and TRP2. Also, here, the UE receives channels / signals from TRP#1 and TRP#2. TRP#1 corresponds to physical cell ID (PCI)#1, and TRP#2 corresponds to PCI#2.

[0034] The multi-TRP (TRP#1, #2) may be connected via an ideal / non-ideal backhaul and exchange information, data, etc. The same or different code words (CWs) and the same or different layers may be transmitted from each TRP of the multi-TRP. As shown in FIG. 1B, non-coherent joint transmission (NCJT) may be used as a form of multi-TRP transmission. Here, NCJT is performed between TPRs corresponding to different PCIs. The same serving cell configuration may be applied / configured to TRP#1 and TRP#2.

[0035] Multiple PDSCHs (multi-PDSCHs) that are non-coherent may be defined to overlap partially or completely in terms of at least one of the time and frequency domains. That is, the first PDSCH from TRP#1 and the second PDSCH from TRP#2 may overlap in terms of at least one of the time and frequency resources. The first PDSCH and the second PDSCH may be used to transmit the same TB or different TBs.

[0036] 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 certain QCL type (e.g., QCL type D).

[0037] Multiple PDSCHs from multiple TRPs (which may also be referred to as multiple PDSCHs) may be scheduled using one DCI (single DCI (S-DCI), single PDCCH) (single master mode). One DCI may be transmitted from one TRP of the multiple TRPs. The configuration using one DCI in multiple TRPs may also be referred to as single DCI-based multiple TRPs (mTRP / MTRP).

[0038] Multiple PDSCHs from multiple TRPs may be scheduled using multiple DCIs (multiple DCI (M-DCI), multiple PDCCHs (multiple PDCCHs)), respectively (multiple master mode). Multiple DCIs may be transmitted from multiple TRPs, respectively. A configuration using multiple DCIs in multiple TRPs may be called a multi-DCI-based multi-TRP (mTRP / MTRP).

[0039] It may be assumed that the UE transmits separate CSI reports (CSI reports) for different TRPs. Such CSI feedback may be referred to as separate feedback, separate CSI feedback, etc. In this disclosure, "separate" may be interchangeably read as "independent."

[0040] In inter-cell mobility, the following scenario 1 or scenario 2 is possible. In the present disclosure, the serving cell may be read as a TRP in the serving cell. Layer 1 / layer 2 (L1 / L2) and DCI / Medium Access Control Control Element (MAC CE) may be read as interchangeable. In the present disclosure, a physical cell identity (PCI) different from the PCI of the current serving cell may be simply referred to as a "different PCI." A non-serving cell, a cell having a different PCI, and an additional cell may be read as interchangeable.

[0041] <Scenario 1> Scenario 1 corresponds to, for example, multi-TRP inter-cell mobility. Note that scenario 1 may not correspond to multi-TRP inter-cell mobility. In scenario 1, for example, the following procedure is performed.

[0042] (1) The UE receives from the serving cell the configuration necessary to use radio resources for data transmission and reception, including SSB configuration for beam measurement of a TRP corresponding to a PCI different from that of the serving cell, and resources of the different PCI. (2) The UE performs beam measurement of the TRPs corresponding to different PCIs and reports the beam measurement results to the serving cell. (3) Based on the above report, the Transmission Configuration Indication (TCI) states associated with the TRPs corresponding to different PCIs are activated by L1 / L2 signaling from the serving cell. (4) The UE transmits and receives using UE-dedicated channels on TRPs corresponding to different PCIs. (5) The UE must always cover the serving cell, including in the case of multiple TRPs. As in conventional systems, the UE must use common channels from the serving cell, such as the Broadcast Control Channel (BCCH) and the Paging Channel (PCH).

[0043] In Scenario 1, when the UE transmits and receives signals to and from an additional cell / TRP (a TRP corresponding to the PCI of the additional cell), the serving cell (the serving cell assumed by the UE) is not changed. That is, serving cell switching via L1 / L2 is not supported. The UE is configured with higher layer parameters related to the PCI of non-serving cells from the serving cell. Scenario 1 may be applied, for example, in Rel. 17.

[0044] Figure 2A shows an example of UE movement in Rel. 17. Assume that the UE moves from a cell (serving cell) with PCI #1 to a cell (additional cell) with PCI #3 (which overlaps with the serving cell). In this case, Rel. 17 does not support switching of the serving cell via L1 / L2.

[0045] An additional cell is a cell with an additional PCI that is different from the PCI of the serving cell. The UE can receive / transmit UE-dedicated channels from the additional cell. The UE needs to be within the coverage of the serving cell to receive UE common channels (e.g., system information / paging / short messages). When the UE moves out of the coverage of the serving cell, a cell change is required, for example, by handover (also known as L3 mobility).

[0046] <Scenario 2> In scenario 2, L1 / L2 inter-cell mobility is applied. With L1 / L2 inter-cell mobility, the serving cell can be changed using functions such as beam control without RRC reconfiguration. In other words, transmission and reception with an additional cell is possible without handover (or without performing an L3 mobility procedure). Since handover requires RRC reconnection, which creates a period during which data communication is unavailable, by applying L1 / L2 inter-cell mobility that does not require handover, data communication can be continued even when the serving cell is changed. In scenario 2, for example, the following procedure is performed.

[0047] (1) The UE receives from the serving cell the SSB configuration of a cell (additional cell) with a different PCI for beam measurement / serving cell change. (2) The UE performs beam measurements of cells using different PCIs and reports the measurement results to the serving cell. (3) The UE may receive a configuration of a cell with a different PCI (serving cell configuration) through higher layer signaling (e.g., RRC). That is, a pre-configuration regarding a serving cell change may be performed. This configuration may be performed together with the configuration in (1) or separately. (4) Based on the above report, the TCI states of cells with different PCIs may be activated by L1 / L2 signaling according to the change of serving cell. The activation of the TCI states and the change of serving cell may be performed separately. (5) The UE changes the serving cell (assumed serving cell) and starts receiving / transmitting using the pre-configured UE-specific channel and TCI state.

[0048] That is, in Scenario 2, the serving cell (assumed to be the serving cell in the UE) is updated by L1 / L2 signaling. Scenario 2 may be applied in Rel. 18 and later.

[0049] Figure 2B shows an example of UE mobility in Rel. 18. In Rel. 18, the serving cell is switched via L1 / L2. The UE can receive / transmit UE-dedicated channels / common channels to / from the new serving cell. The UE may move out of the coverage of the previous serving cell.

[0050] (Candidate cell setting) In L1 / L2 inter-cell mobility, candidate cells may be configured in addition to the serving cell. In the present disclosure, the candidate cell may be read as a target cell, an additional cell, or an additional PCI. One or more candidate cells (or candidate cell groups) may be associated separately with each serving cell, or one or more candidate cells (or candidate cell groups) may be commonly associated with multiple serving cells.

[0051] The configuration of the candidate cell (or candidate cell group) may be configured in the same manner as inter-cell beam management (inter-cell BM) of an existing system (e.g., Rel. 17 or earlier) using a predetermined higher layer parameter (e.g., ServingCellConfig). Alternatively, the configuration of the candidate cell (or candidate cell group) may reuse a carrier aggregation configuration framework (e.g., CA configuration framework) or a CHO (Conditional Handover) / CPC (Conditional PSCell Change) configuration framework.

[0052] The activation / deactivation of a candidate cell (or a candidate cell group) configured by higher layer parameters may be instructed to the UE by MAC CE / DCI.

[0053] As the configuration of the candidate cell (or the association with the serving cell), for example, at least one of the following configuration examples 1 to 3 may be applied. Here, SpCell#0, SCell#1, and SCell#2 are configured as serving cells, and an example of a candidate cell / candidate cell group configured separately from the serving cell is shown. The following configuration examples 1 to 3 are merely examples, and the number of serving cells / number of candidate cells / number of candidate cell groups, the association between the serving cell and the candidate cell, etc. are not limited to these and may be changed as appropriate. Alternatively, other configuration examples may be supported / applied in addition to / instead of configuration examples 1 to 3.

[0054] [Setting example 1] In configuration example 1, one or more candidate cells are associated / configured with each serving cell (or the frequency domains corresponding to each serving cell) (see FIG. 3). Here, a case is shown in which candidate cells #0-1, #0-2, and #0-3 are associated with SpCell#0 (or the frequency domain corresponding to SpCell#0), candidate cell #1-1 is associated with SCell#1 (or the frequency domain corresponding to SCell#1), and candidate cells #2-1 and #2-2 are associated with SCell#2 (or the frequency domain corresponding to SpCell#2). Information related to the association may be configured / instructed to the UE by the base station using RRC / MAC CE / DCI.

[0055] [Setting example 2] In configuration example 2, candidate cells are associated / configured with a MAC entity / MCG / SCG (see FIG. 3). Here, a case is shown in which candidate cells #3-#8 are associated with a MAC entity / MCG / SCG. In this case, candidate cells are not associated with each serving cell, but are configured with a MAC entity or a cell group (e.g., MCG / SCG). Information about the candidate cell configured for each cell may be configured / instructed to the UE by the base station via RRC / MAC CE / DCI.

[0056] [Setting example 3] In configuration example 3, one or more candidate cell groups are configured (see FIG. 3). A candidate cell group has one or more candidate cells. Here, a case is shown in which candidate cell group #1 having candidate cells #0-#2, candidate cell group #2 having candidate cells #0 and #1, and candidate cell group #3 having candidate cell #0 are configured. At least one of information about the candidate cell group to be configured and information about the candidate cells included in each candidate cell group may be configured / instructed to the UE by the base station via RRC / MAC CE / DCI.

[0057] [Serving cell switching] Existing systems (eg, Rel. 17) support L1 beam indication (eg, indication by the TCI status field of the DCI) regarding the TCI status of an additional PCI (or additional cell).

[0058] It is assumed that new L1 / L2 signals (e.g., DCI / MAC CE) that indicate a serving cell switch will be supported in Rel. 18 and later. At least one of an implicit indication and an explicit indication may be supported. An implicit indication may mean, for example, that a CORESET is updated by the MAC CE to a TCI state associated with an additional PCI. An explicit indication may mean that the cell switch is directly indicated by the DCI / MAC CE.

[0059] For example, in candidate cell configuration example 1, a predetermined candidate cell may be designated as a serving cell (or a switch to the serving cell may be instructed) via L1 / L2 signaling. Fig. 4A shows a case where candidate cell #0-2 becomes an SpCell of the MCG / SCG via L1 / L2 signaling (SpCell #0 and candidate cell #0-2 are switched). Also, a case where candidate cell #2-1 becomes an SCell of the MCG / SCG via L1 / L2 signaling (SCell #2 and candidate cell #2-1 are switched) is shown.

[0060] Alternatively, in candidate cell configuration example 2, a predetermined candidate cell may be designated as a serving cell (or a switch to the serving cell may be instructed) via L1 / L2 signaling. Fig. 4B shows a case where candidate cell #4 becomes an SpCell of the MCG / SCG (SpCell #0 and candidate cell #4 are switched) via L1 / L2 signaling.

[0061] Alternatively, in candidate cell configuration example 3, a predetermined candidate cell group (or one or more candidate cells included in the predetermined candidate cell group) may be changed / updated to a serving cell group via L1 / L2 signaling. FIG. 4C illustrates a case where candidate cell group #1 (or candidate cells #0-#2 included in candidate cell group #1) becomes a serving cell group (the serving cell group and candidate cell group #1 are switched) via L1 / L2 signaling. Among the candidate cells included in candidate cell group #1 (here, candidate cells #0-#2), a candidate cell associated with SpCell #0 or a candidate cell set in the same frequency region as SpCell #0 (here, candidate cell #0) may be set as a new SpCell. Alternatively, the candidate cell to be the SpCell may be indicated via L1 / L2 signaling.

[0062] (CSI reporting settings) FIG. 5 is a diagram illustrating an overview of the CSI reporting configuration of RRC. FIG. 5 illustrates the CSI reporting configuration of RRC in 3GPP Rel. 17. As illustrated in FIG. 5, 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".

[0063] Figure 6 is a diagram showing part of the CSI resource configuration of Rel. 17. As shown in Figure 6, the CSI resource configuration (CSI-ResourceConfig) includes "csi-SSB-ResourceSetList." "csi-SSB-ResourceSetList" is a reference list of SSB resources used for CSI measurement and reporting among the CSI-RS resource sets. "csi-SSB-ResourceSetListExt-r17" is used to add elements to "csi-SSB-ResourceSetList" when the number of reporting groups (nrofReportedGroups-r17) is set in the CSI reporting configuration.

[0064] Figure 7 shows a portion of the CSI-SSB resource set of Rel. 17. As shown in Figure 7, the CSI-SSB-ResourceSet includes a "servingAdditionalPCIList-r17". The "servingAdditionalPCIList-r17" indicates the physical cell IDs (PCIs) of the SSBs included in the csi-SSB-ResourceList. If this parameter is present, this list has the same number of entries as the csi-SSB-ResourceList. The first entry in this list indicates the PCI value for the first entry in the csi-SSB-ResourceList, the second entry in this list indicates the PCI value for the second entry in the csi-SSB-ResourceList, and so on.

[0065] For each entry, if the value is zero, the PCI is the PCI of the serving cell in which this CSI-SSB-ResourceSet is defined. Otherwise (if the value of each entry is non-zero), the value of each entry is the additionalPCIIndex-r17 of SSB-MTC-AdditionalPCI-r17 in the additionalPCIList-r17 of the serving cell configuration (ServingCellConfig), and the PCI is the additionalPCI-r17 of this SSB-MTC-AdditionalPCI-r17.

[0066] Figure 8 is a diagram showing the configuration related to L3 measurement / reporting in Rel.17. associatedMeasGapSSB-r17 indicates the associated measurement gap for SSB measurement identified by ssb-ConfigMobility of the measurement object. When setting multiple MeasObjectNRs with the same SSB frequency, the network sets the same measurement gap ID in this field for each MeasObjectNR. If this field is absent, the associated measurement gap is the gap set via gapFR1, gapFR2, or gapUE.

[0067] associatedMeasGapCSIRS-r17 indicates the associated measurement gap for CSI-RS measurement identified by csi-rs-ResourceConfigMobility of the measurement object. If this field is absent, the associated measurement gap is the gap set via gapFR1, gapFR2, or gapUE.

[0068] <Enhancement of L1 Measurement Report for L1 / L2 Inter-Cell Mobility> When the RS (mainly SSB) of the serving cell and the non-serving cell are set within the same CSI reporting configuration (or within the same CSI resource configuration), the UE may report by adding some indicators indicating the serving / non-serving cell in addition to the conventional reporting content.

[0069] When new RRC parameters are set, the UE may report the L3-RSRP value (per beam / cell / multi-beam) in addition to the SSB index / CRI and L1-RSRP (Reference Signal Received Power) / L1-SINR (Signal to Interference plus Noise Ratio) values.

[0070] <L1 / L2 Inter-cell Mobility Event Trigger L1 Beam Report> One or more existing events for RRM in TS38.331 may be reused to trigger an aperiodic L1 beam report. One or more new / separated events may be defined to trigger an aperiodic L1 beam report. An L1 beam report may be performed with any combination of two or more events as the trigger. The event may be any of the following events A2 to A6 and I1. In events A2 to A6, the measurement result may be at least one of the measurement results of RSRP (L1-RSRP / L3-RSRP), RSRQ, and SINR (RS-SINR).

[0071] Event A2: The measurement result of the serving cell is worse than the threshold. Event A3: The measurement result of the neighboring cell (the value obtained by adding an offset to the measurement result) is better than the measurement result of the SpCell (the value obtained by adding an offset to the measurement result). Event A4: The measurement result of the neighboring cell (the value obtained by adding an offset to the measurement result) is better than the threshold. Event A5: The measurement result of the SpCell is worse than the first threshold, and the measurement result of the neighboring cell (the value obtained by adding an offset to the measurement result) is better than the second threshold. Event A6: The measurement result of the neighboring cell (the value obtained by adding an offset to the measurement result) is better than the measurement result of the serving cell (Secondary Cell (SCell)) (the value obtained by adding an offset to the measurement result). Event I1: The measurement result of the interference is higher than the threshold.

[0072] Thus, in L1 / L2 inter-cell mobility (e.g., switching from a serving cell to a candidate cell (or an additional cell / target cell)), if a candidate cell is configured / applied / supported, it is expected that L1 beam measurement / reporting (or CSI measurement / reporting) of the candidate cell / serving cell will be performed. However, sufficient consideration has not been given to how to control the configuration / operation of L1 beam measurement / reporting (or CSI measurement / reporting) in such cases. If L1 beam measurement / reporting (or CSI measurement / reporting) of the candidate cell / serving cell is not performed appropriately, there is a risk of degradation in communication quality.

[0073] The inventors focused on inter-cell mobility (e.g., cell switching) when a candidate cell (or additional cell, target cell) is configured / supported, studied L1 beam measurement / reporting (or CSI measurement / reporting) of the candidate cell / serving cell, and came up with the present embodiment.

[0074] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that each of the following aspects (for example, each case) may be used alone, or at least two of them may be combined and applied.

[0075] In the present disclosure, "A / B" and "at least one of A and B" may be interpreted interchangeably. Also, in the present disclosure, "A / B / C" may mean "at least one of A, B, and C."

[0076] In the present disclosure, terms such as activate, deactivate, indicate (or indicate), select, configure, update, and determine may be read interchangeably. In the present disclosure, terms such as support, control, controllable, operate, and operate may be read interchangeably.

[0077] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, information elements (IEs), configurations, etc. may be interchangeable. In the present disclosure, Medium Access Control (MAC) control elements (CEs), update commands, activation / deactivation commands, etc. may be interchangeable.

[0078] 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.

[0079] In the present disclosure, MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. 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.

[0080] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0081] In this disclosure, the terms index, identifier (ID), indicator, resource ID, etc. may be interchangeable. In this disclosure, the terms sequence, list, set, group, cluster, subset, etc. may be interchangeable.

[0082] In this disclosure, the terms panel, UE panel, panel group, beam, beam group, precoder, Uplink (UL) transmitting entity, Transmission / Reception Point (TRP), base station, Spatial Relation Information (SRI), spatial relation, SRS Resource Indicator (SRI), Control Resource Set (CORESET), Physical Downlink Shared Channel (PDSCH), Codeword (CW), Transport Block (TB), Reference Signal (RS), antenna port (e.g., Demodulation Reference Signal (DMRS) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, Code Division Multiplexing (CDM) group, reference signal group, CORESET group, Physical Uplink Control Channel (PUCCH) group, PUCCH resource group), resource (e.g., reference signal resource, SRS resource), resource set (e.g., reference signal resource set), CORESET pool, downlink Transmission Configuration Indication state (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, Quasi-Co-Location (QCL), QCL assumption, etc. may be read as interchangeable.

[0083] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and spatial relationship information (TCI state) may be interchangeable. "Spatial relationship information" may be interchangeable with "set of spatial relationship information," "one or more pieces of spatial relationship information," etc. The TCI state and TCI may be interchangeable with each other.

[0084] In the following embodiments, "multiple" and "two" may be interchangeable. Also, "TAG" and "TAG ID" may be interchangeable. Also, "cell", "CC", and "carrier" may be interchangeable.

[0085] The following description may be applied to inter-cell mobility (e.g., L1 / L2 inter cell mobility) or to communication control other than inter-cell mobility. L1 / L2 inter-cell mobility may be interpreted as at least one of cell switching, cell switch, and cell change.

[0086] (Wireless communication method) First Embodiment In the first embodiment, an example of CSI resource configuration (CSI-ResourceConfig) / CSI report configuration (CSI-ReportConfig) when L1 beam measurement / reporting (e.g., L1 beam measurement / reporting) of a cell of one or more frequencies is supported will be described.

[0087] In the present disclosure, L1 beam measurement / report may be read as CSI measurement / report. Also, in the present disclosure, L1 beam measurement / report (or CSI measurement / report) may be read as one of L1 beam measurement (or CSI measurement), one of L1 beam report (or CSI report), or both L1 beam measurement and report (or CSI measurement and report). In the present disclosure, cell may apply only to a candidate cell, may apply only to a serving cell, or may apply to both a candidate cell and a serving cell.

[0088] In the present disclosure, a cell may be read as a PCI. For example, the L1 beam report may include at least one of an L1-RSRP / L1-SINR associated with one or more PCIs (e.g., a serving cell PCI / additional PCIs), an L1-RSRP / L1-SINR associated with one or more frequencies (e.g., a serving cell frequency / different frequencies), and an L1-RSRP / L1-SINR associated with one or more CCs.

[0089] In inter-cell mobility, to support switching of an SpCell / SCell to a candidate cell (or additional cell, target cell) of any frequency, L1 beam measurements (inter-frequency measurements) of multiple frequencies may be supported. L1 beam measurements / reports (or CSI measurements / reports) for multiple frequencies (or frequency domains) may include at least one of Layer 1 Reference Signal Received Power (L1-RSRP) and Layer 1 Signal to Interference plus Noise Ratio (L1-SINR).

[0090] The UE may receive information regarding the CSI resource configuration / CSI reporting configuration of one or more candidate cells corresponding to different frequencies, and may perform a CSI report / beam report including at least one of the L1-RSRP and L1-SINR of each candidate cell based on the information.

[0091] For example, the UE may report CSI including one or both of L1-RSRP and L1-SINR for a certain cell (e.g., a candidate cell) or a certain frequency (e.g., a frequency corresponding to a candidate cell) (see FIG. 9). FIG. 9 illustrates an example in which a certain CSI report (e.g., CSI report #n) includes both L1-RSRP and L1-SINR.

[0092] In FIG. 9, the CSI report includes the largest absolute value of the L1-RSRP (L1-RSRP #1) and differential values ​​from this absolute value (Differential RSRP #2, #3, #4). The CSI report also includes the largest absolute value of the L1-SINR (L1-SINR #3) and differential values ​​from this absolute value (Differential RSRP #1, #2, #4). The CSI report may also include a field indicating the largest L1-SINR (here, at the beginning (first line)). Here, a case is shown in which L1-SINR #3 (or beam #3) is indicated as the beam having the largest L1-SINR. In the present disclosure, beam may be interpreted as a reference signal resource index (e.g., CRI (CSI-RS Resource Indicator) / SSBRI (SS / PBCH Block Resource Indicator)).

[0093] The beam selection rule (or the selection rule of the CSI to be reported) may be predefined in the specification or may be configured by RRC signaling. The beam selection (or the selection of the CSI to be reported) may be based on both L1-RSRP and L1-SINR.

[0094] When measuring RSs at multiple frequencies and selecting a beam to report, the UE may first compare the L1-RSRPs of cells at each frequency (or L1-RSRPs at the same frequency), and then compare the L1-SINRs of cells at different frequencies (L1-SINRs of cells cross frequencies). Alternatively, the UE may first compare the L1-SINRs of cells at different frequencies, and then compare the L1-RSRPs at the same frequency.

[0095] The UE may select a beam (or select CSI to report) based on a predetermined higher layer parameter. The predetermined higher layer parameter may be, for example, a report quantity (e.g., reportQuantity) included in a CSI reporting configuration (e.g., CSI-ReportConfig). On the other hand, when either L1-RSRP or L1-SINR is configured by the predetermined higher layer parameter, the UE may control to include the configured one in the CSI report and not include the other in the CSI report.

[0096] For example, the UE may determine beam selection (or CSI to report) based on at least one of the following options 1-1 to 1-3.

[0097] [Option 1-1] The configuration of both L1-RSRP and L1-SINR may be supported by a predetermined higher layer parameter (e.g., reportQuantity) so that both L1-RSRP and L1-SINR can be reported for a beam index (or CSI index).

[0098] For example, if both L1-RSRP and L1-SINR are configured by predetermined higher layer parameters, the UE reports CSI including L1-RSRP and L1-SINR.

[0099] Alternatively, even when both L1-RSRP and L1-SINR are configured, if a predetermined condition is met, the amount of CSI reporting may be reduced (or some CSI reporting may not be performed). The overhead of CSI reporting may be reduced based on at least one of the following Option 1-1A and Option 1-1B.

[0100] Option 1-1A The UE may determine what to report (or what measurement results to include in the CSI) based on at least one of the L1-RSRP measurement result and the L1-SINR measurement result. For example, the UE may determine whether to report both L1-RSRP and L1-SINR (or whether to report one of them) based on at least one of the L1-RSRP measurement result and the L1-SINR measurement result. When reporting only one of L1-RSRP and L1-SINR, the UE may determine which measurement result to report based on the L1-RSRP measurement result and the L1-SINR measurement result.

[0101] Alternatively, the UE may always include one of the measurement results (e.g., L1-RSRP) in the CSI and determine whether to report the other measurement result (e.g., L1-SINR) based on at least one of the L1-RSRP measurement result and the L1-SINR measurement result.

[0102] The UE may indicate the measurement results to be reported. For example, if the UE reports only one of L1-RSRP and L1-SINR, the UE may indicate which measurement results to report. For example, the measurement results to be reported may be indicated using a predetermined field included in the CSI.

[0103] Option 1-1B The UE may report both L1-RSRP and L1-SINR for a specific beam / cell, and may report only L1-RSRP or L1-SINR for other beams / cells (or the remaining beams / cells). In this disclosure, the specific beam / cell may be the best beam / cell, the beam / cell with the highest quality, the beam / cell with the highest L1-RSRS, or the beam / cell with the highest L1-SINR. The beam may be a resource index (e.g., CRI / SSBRI) for the reference signal.

[0104] In Option 1-1A / Option 1-1B, when selecting (or reporting) both / only one of L1-RSRP and L1-SINR, the UE may autonomously determine the report content, or the report content may be determined based on a predetermined rule. The predetermined rule may be, for example, a rule that reports measurement results that exceed a threshold set / defined for L1-RSRP and a threshold set / defined for L1-SINR. The L1-RSRP threshold / L1-SINR threshold may be set separately by higher layer signaling.

[0105] In this way, even if reporting of both L1-RSRP and L1-SINR is configured / defined, the increase in overhead of CSI reporting can be suppressed by allowing / supporting reporting of only one of them based on predetermined conditions.

[0106] [Option 1-2] A specific upper layer parameter (e.g., reportQuantity) / DCI may support the configuration / indication of only one of L1-RSRP and L1-SINR. The UE controls to report the configured / indicated measurement result (either L1-RSRP or L1-SINR).

[0107] [Options 1-3] A certain higher layer parameter (e.g., reportQuantity) / DCI may support the configuration / indication of only one of L1-RSRP and L1-SINR. The UE may report both L1-RSRP and L1-SINR for a specific beam / cell, and may report measurement results (only L1-RSRP or L1-SINR) configured / indicated by the higher layer parameter / DCI for other beams / cells (or the remaining beams / cells).

[0108] The specific cell may be determined autonomously by the UE or configured by a higher layer parameter, or may be reported when a measurement result of a CSI report (L1-RSRP or L1-SINR) that is not configured by a higher layer exceeds a predefined / configured threshold.

[0109] In this way, even if reporting of only one of L1-RSRP and L1-SINR is configured / defined, detailed CSI reporting can be performed for a specific beam / cell by allowing / supporting reporting of both L1-RSRP and L1-SINR for a specific cell.

[0110] [UE ability] When the CSI resource configuration (CSI-ResourceConfig) / CSI reporting configuration (CSI-ReportConfig) supports L1 beam (or CSI) measurement / reporting for cells of multiple frequencies, a UE capability regarding the number of cells (or beams, CSI numbers) to be configured / reported may be introduced. For example, a UE capability regarding the number of cells (or beams, CSI numbers) to be configured / reported for each CSI resource configuration / CSI reporting configuration / frequency may be supported. Alternatively, a UE capability regarding the number of cells (or beams, CSI numbers) to be configured / reported across CSI resource configurations / CSI reporting configurations / frequencies may be supported.

[0111] <Second embodiment> In the second embodiment, another example of CSI resource configuration (CSI-ResourceConfig) / CSI report configuration (CSI-ReportConfig) when L1 beam measurement / reporting of a cell of one or multiple frequencies (e.g., L1 beam measurement / reporting) is supported will be described. The second embodiment may be applied in combination with the first embodiment.

[0112] When the CSI resource configuration (CSI-ResourceConfig) / CSI reporting configuration (CSI-ReportConfig) supports L1 beam measurement / reporting of a cell of a certain frequency, the CSI resource configuration / CSI reporting configuration may include information about the frequency (e.g., frequency configuration). L1 beam measurement / reporting may be read as CSI measurement / reporting.

[0113] The frequency configuration may be a frequency configuration (e.g., an absolute radio-frequency channel number (ARFCN)-ValueNR) corresponding to a reference signal for measurement (e.g., SSB / CSI-RS). The ARFCN-ValueNR is used to indicate the ARFCN that applies to the NR global frequency raster for downlink, uplink, or bidirectional (TDD). Each CSI reporting configuration / CSI resource configuration corresponds to one frequency. Multiple CSI reporting configurations are required to support L1 beam measurement / reporting on multiple frequencies. If the ARFCN-ValueNR is not present in the CSI reporting configuration, it may mean that the frequency is the same as the current serving cell configuration.

[0114] A frequency configuration (e.g., frequency configuration) indicating the frequency at which CSI is measured / reported and a report quantity (e.g., reportQuantity) indicating the content of CSI measurement / reporting (e.g., L1-RSRP, L1-SINR) may be configured in the UE. The configuration shown in the first embodiment may be applied to the setting / reporting of the report quantity.

[0115] For example, one CSI reporting configuration (or each CSI reporting configuration) may include a frequency configuration (e.g., frequency configuration) and a report amount (e.g., reportQuantity). A configuration may be supported in which measurement / reporting of both L1-RSRP and L1-SINR is configured for a certain cell (or frequency), and measurement / reporting of only one of L1-RSRP and L1-SINR is configured for another cell (or frequency). The UE controls CSI measurement / CSI reporting based on the frequency configuration (e.g., frequency configuration) and the report amount (e.g., reportQuantity).

[0116] For example, the UE may determine beam selection (or CSI to report) based on at least one of the following options 2-1 to 2-3.

[0117] [Option 2-1] The configuration of both L1-RSRP and L1-SINR may be supported by a predetermined higher layer parameter (e.g., reportQuantity) so that both L1-RSRP and L1-SINR can be reported for a beam index (or CSI index) of a certain cell (or a certain frequency).

[0118] For example, when both L1-RSRP and L1-SINR are configured for a certain cell or frequency based on predetermined higher layer parameters (e.g., frequency configuration and report quantity), the UE reports CSI including the L1-RSRP and L1-SINR corresponding to the frequency.

[0119] Alternatively, if a predetermined condition is satisfied, the amount of CSI reporting may be reduced (or some CSI reporting may not be performed). The overhead of CSI reporting may be reduced based on at least one of the following Option 2-1A and Option 2-1B.

[0120] Option 2-1A The UE may determine what to report (or what measurement results to include in the CSI) based on at least one of the L1-RSRP measurement result and the L1-SINR measurement result. For example, the UE may determine whether to report both the L1-RSRP and the L1-SINR based on at least one of the L1-RSRP measurement result and the L1-SINR measurement result. When reporting only one of the L1-RSRP and the L1-SINR, the UE may determine which measurement result to report based on the L1-RSRP measurement result and the L1-SINR measurement result.

[0121] Alternatively, the UE may always include one measurement result (e.g., L1-RSRP) in the CSI and determine whether to report the other measurement result (e.g., L1-SINR) based on at least one of the L1-RSRP measurement result and the L1-SINR measurement result.

[0122] The UE may indicate the measurement results to be reported. For example, if the UE reports only one of L1-RSRP and L1-SINR, the UE may indicate which measurement results to report. For example, the measurement results to be reported may be indicated using a predetermined field included in the CSI.

[0123] Option 2-1B The UE may report both L1-RSRP and L1-SINR for a particular beam / cell, and may report only L1-RSRP or L1-SINR for other beams / cells (or the remaining beams / cells). In this disclosure, the particular beam / cell may be the best beam / cell, the beam / cell with the highest quality, the beam / cell with the highest L1-RSRS, or the beam / cell with the highest L1-SINR.

[0124] In Option 2-1A / Option 2-1B, when selecting (or reporting) both / only one of L1-RSRP and L1-SINR, the UE may autonomously determine the report content, or the report content may be determined based on a predetermined rule. The predetermined rule may be, for example, a rule that reports measurement results that exceed a threshold set / defined for L1-RSRP and a threshold set / defined for L1-SINR. The threshold for L1-RSRP / L1-SINR may be set separately by higher layer signaling.

[0125] In this way, even if reporting of both L1-RSRP and L1-SINR is configured / defined, the increase in overhead of CSI reporting can be suppressed by allowing / supporting reporting of only one of them based on predetermined conditions.

[0126] [Option 2-2] Depending on predetermined higher layer parameters (e.g., frequency configuration and report quantity) / DCI, configuration / indication of only one of L1-RSRP and L1-SINR for a certain cell or frequency may be supported. The UE controls to report the configured / indicated measurement result (either L1-RSRP or L1-SINR).

[0127] [Option 2-3] Certain higher layer parameters (e.g., frequency configuration and report quantity) / DCI may support configuration / indication of only one of L1-RSRP and L1-SINR for a certain cell or frequency. A UE may report both L1-RSRP and L1-SINR for a specific beam / cell / frequency, and may report measurement results (either L1-RSRP or L1-SINR) configured / indicated by the higher layer parameters / DCI for other beams / cells / frequencies (or the remaining beams / cells / frequencies).

[0128] The specific cell may be determined autonomously by the UE or configured by a higher layer parameter, or may be reported when a measurement result of a CSI report (L1-RSRP or L1-SINR) that is not configured by a higher layer exceeds a predefined / configured threshold.

[0129] In this way, even if reporting of only one of L1-RSRP and L1-SINR is configured / defined, detailed CSI reporting can be performed for a specific beam / cell by allowing / supporting reporting of both L1-RSRP and L1-SINR for a specific cell.

[0130] [UE ability] When the CSI resource configuration (CSI-ResourceConfig) / CSI reporting configuration (CSI-ReportConfig) supports L1 beam (or CSI) measurement / reporting for cells of multiple frequencies, a UE capability regarding the number of cells (or beams, CSI numbers) to be configured / reported may be introduced. For example, a UE capability regarding the number of cells (or beams, CSI numbers) to be configured / reported for each CSI resource configuration / CSI reporting configuration / frequency may be supported. Alternatively, a UE capability regarding the number of cells (or beams, CSI numbers) to be configured / reported across CSI resource configurations / CSI reporting configurations / frequencies may be supported.

[0131] <Third embodiment> In the third embodiment, an example of the relationship between a candidate cell configured by a higher layer parameter and a candidate cell or parameter configured / activated by another higher layer parameter or MAC CE will be described.

[0132] For L1 / L2 inter-cell mobility, candidate cell configurations are configured by RRC (e.g., first RRC parameters). Here, the candidate cells configured by the first RRC parameters are referred to as candidate cell set #A (e.g., candidate cells set A). Candidate cell set #A may include a serving cell and candidate cells, or may include only candidate cells (candidate cells corresponding to one or more serving cells). In the present disclosure, candidate cell set may be interpreted as a set, a cell set, a list, a cell list, a candidate cell list, or a combination of cells.

[0133] 10 shows an example of the correspondence relationship between a serving cell and a candidate cell. Here, a case is shown in which, by the first RRC (or the first RRC parameter / information element), SpCell#0 and candidate cells #0-1, #0-2, and #0-3 are configured for the first frequency, SCell#1 and candidate cell #1-1 are configured for the second frequency, and SCell#2 and candidate cells #2-1 and #2-2 are configured for the third frequency. One or more RRC parameters / information elements may be indicated to the UE as the first RRC parameter. For example, the first RRC parameter may be notified for each serving cell / frequency.

[0134] For the candidate cell and the serving cell, L1 beam measurement / reporting (or CSI measurement / reporting) is configured by RRC (e.g., second RRC parameters). Here, the candidate cell configured by the second RRC parameters is referred to as candidate cell set #B (e.g., Candidate cells set B). The base station may control the transmission of L1 / L2 cell switch instruction signaling (e.g., DCI / MAC CE) instructing cell switch based on the L1 beam report (or CSI report) from the UE. In this case, L1 / L2 inter-cell mobility (e.g., switch from the serving cell to the candidate cell) may be configured to be performed within the range of candidate cell set #B (or the candidate cell to be switched to may be selected from the candidate cells included in candidate cell set #B).

[0135] The MAC CE activates the TCI states associated with the serving cell PCI / candidate cell PCI (candidate cell PCI on the same / different frequency as the serving cell PCI). Here, the candidate cells activated by the MAC CE are referred to as candidate cell set #C (e.g., candidate cell set C).

[0136] Also, when only intra-frequency mobility is supported (or inter-frequency mobility is not applied), serving cells / candidate cells corresponding to the same frequency may be included in the same candidate cell set. For example, SpCell#0, candidate cells #0-0, and #0-2 may be included in the same candidate cell set (e.g., candidate cell set #E).

[0137] In this way, when a candidate cell (e.g., candidate cell set #A) is configured for L1 / L2 inter-cell mobility, it is necessary to appropriately control the relationship between the cell (e.g., candidate cell set #A) configured for L1 / L2 inter-cell mobility and the candidate cell (e.g., candidate cell set #B) configured for L1 beam measurement / reporting.

[0138] Alternatively, it is necessary to appropriately control the relationship between cells configured for L1 / L2 inter-cell mobility (e.g., candidate cell set #A) or candidate cells configured for L1 beam measurement / reporting (e.g., candidate cell set #B) and candidate cells associated with the TCI state activated by the MAC CE (e.g., candidate cell set #C).

[0139] The relationship between candidate cell set #A (hereinafter also referred to as set #A), candidate cell set #B (hereinafter also referred to as set #B), and candidate cell set #C (hereinafter also referred to as set #C) may be defined / set based on at least one of options 3-1 to 3-4.

[0140] [Option 3-1] Any cell in set #A is set to set #B. That is, a cell (candidate cell / serving cell) set to set #B may be selected from cells (candidate cells / serving cells) included in set #A (set #B ∈ set #A).

[0141] 11 shows an example of cells included in set #A and cells included in set #B. Here, a case is shown in which set #A includes SpCell#0, candidate cells #0-1, #0-2, #0-3, SCell#1, candidate cell #1-1, SCell#2, candidate cells #2-1, #2-2. Also, a case is shown in which set #B includes SpCell#0, candidate cells #0-1, #0-2, #0-3, SCell#1, candidate cell #1-1, SCell#2, candidate cells #2-1, #2-2. Note that set #A / set #B may be configured to include only candidate cells (or not include a serving cell).

[0142] Set #A (or candidate cells included in set #A) may be configured by higher layer parameters related to candidate cell configuration (e.g., candidate cell condition). Set #B (or candidate cells included in set #B) may be configured by higher layer parameters related to L1 beam measurement / reporting or CSI measurement / reporting (e.g., L1 beam measurement / reporting, CSI-ReportConfig).

[0143] In this case, L1 / L2 inter-cell mobility (e.g., switching from a serving cell to a candidate cell) may be performed within the scope of set #B. When a cell switch is indicated by DCI / MAC CE, the UE may assume that the candidate cell to be switched to is selected from the candidate cells included in set #B.

[0144] Alternatively, any cell in set #B may be configured to be set to set #A. In other words, a cell (candidate cell / serving cell) to be set to set #A may be selected from cells (candidate cells / serving cells) included in set #B (set #A∈set #B). In this case, it is possible to grasp the channel conditions of other cells (e.g., non-serving cells) other than the candidate cell to which L1 / L2 inter-cell mobility is applied (e.g., a candidate cell that is a handover destination candidate). Based on the channel conditions of other cells, it is possible to appropriately reconfigure the candidate cell to which L1 / L2 inter-cell mobility is applied.

[0145] [Option 3-2] A MAC CE is introduced to instruct / control activation / deactivation of candidate cells. When a candidate cell included in set #A is activated / deactivated by the MAC CE, it may also be applied / configured to set #B, or may not be applied / configured to set #B. In the present disclosure, deactivation may be read as invalidation or dormancy.

[0146] For example, when a candidate cell included in set #A is deactivated, at least one of the following options 3-2A to 3-2D may be applied.

[0147] Option 3-2A When a candidate cell included in set #A is deactivated, the deactivated candidate cell may be configured in set #B (or configuration in set #B may be supported). That is, even when the deactivated candidate cell is deactivated as a candidate cell for L1 / L2 inter-cell mobility, L1 beam measurement / reporting (or CSI measurement / reporting) may be configured for the deactivated candidate cell.

[0148] Option 3-2B When a candidate cell included in set #A is deactivated, the deactivated candidate cell is not configured in set #B (or configuration in set #B is not supported). In other words, when the deactivated candidate cell is deactivated as a candidate cell for L1 / L2 inter-cell mobility, L1 beam measurement / reporting (or CSI measurement / reporting) may not be configured for the deactivated candidate cell.

[0149] Option 3-2C When a candidate cell included in set #A is deactivated, the UE may ignore L1 beam measurement / report (or CSI measurement / report) for the deactivated candidate cell. Alternatively, the UE may not be required to perform L1 beam measurement / report (or CSI measurement / report) for the deactivated candidate cell.

[0150] For example, if a candidate cell included in set #A is deactivated and higher layer parameters regarding L1 beam measurement / reporting (or CSI measurement / reporting) are configured for the deactivated candidate cell, the UE may ignore (or may not be requested to) measure / report the candidate cell. Also, if a candidate cell included in set #A is activated and higher layer parameters regarding L1 beam measurement / reporting (or CSI measurement / reporting) are configured for the activated candidate cell (e.g., if the candidate cell is activated after being deactivated), the UE may resume measurement / reporting of the activated candidate cell based on the conditions configured in the higher layer parameters.

[0151] Option 3-2D When a candidate cell included in Set #A is deactivated, the UE may ignore the L1 measurement operation of the CSI reporting configuration (e.g., CSI-ReportConfig) including the deactivated candidate cell (e.g., a candidate cell configured with L1 beam measurement / reporting) for the deactivated candidate cell. Alternatively, the UE may not be required to perform the L1 measurement operation of the CSI reporting configuration (e.g., CSI-ReportConfig) including the deactivated candidate cell.

[0152] Variations At least one of Option 3-2A to Option 3-2D may be applied to the serving cell. For example, for a deactivated serving cell or an original serving cell after switching (e.g., original serving cell), the UE may ignore (or may not require) L1 measurements / reports.

[0153] 《UE ability》 A UE capability may be introduced to indicate support for a MAC CE (e.g., a new MAC CE) that indicates activation / deactivation of a candidate cell. A UE capability may be introduced to indicate whether or not to support L1 beam measurement / reporting for a deactivated serving cell / candidate cell.

[0154] [Option 3-3] Cells or cell sets to which cell switching is applicable / supported may be supported separately. Here, a set including cells to which cell switching is applicable / supported is referred to as set #M (or candidate cell set #M). Set #M may be configured by higher layer parameters, or may be obtained / selected from a predetermined cell set. Set #M may include only candidate cells to which cell switching may be applicable, or may include a serving cell and candidate cells to which cell switching may be applicable.

[0155] The base station may instruct the UE to select candidate cells included in set #M as target candidate cells for handover. The UE may assume that target candidate cells are indicated from set #M during L1 / L2 inter-cell mobility.

[0156] Any cell in set #M may be obtained / selected from set #B. That is, a cell (candidate cell / serving cell) configured in set #M may be selected from cells (candidate cells / serving cells) included in set #B (set #M∈set #B). As a result, only candidate cells for which L1 beam measurement / reporting (or CSI measurement / reporting) is configured are configured as cell switching candidate cells.

[0157] FIG. 12 shows an example of cells included in set #A, cells included in set #B, and cells included in set #M. Here, set #A includes SpCell#0, candidate cells #0-1, #0-2, #0-3, SCell#1, candidate cell #1-1, SCell#2, candidate cells #2-1, #2-2. Also, set #B includes SpCell#0, candidate cells #0-1, #0-2, SCell#1, candidate cell #1-1, SCell#2, candidate cells #2-1, #2-2. Set #M includes SpCell#0, candidate cells #0-1, #0-2, SCell#1, candidate cell #1-1, SCell#2, candidate cell #2-1. Note that set #A / set #B / set #M may be configured to include only candidate cells (or not include a serving cell).

[0158] Alternatively, any cell in set #B may be obtained / selected from set #M. That is, a cell (candidate cell / serving cell) to be set in set #B may be selected from cells (candidate cells / serving cells) included in set #M (set #B ∈ set #M).

[0159] [Option 3-4] Any cell in set #B is set to set #C. That is, a cell (candidate cell / serving cell) set to set #C may be selected from cells (candidate cells / serving cells) included in set #B (set #C∈set #B).

[0160] Set #C (or candidate cells included in set #C) may be a set (or candidate cells) having a TCI state activated by the MAC CE.

[0161] Option 3-4A The cell indicated by the L1 / L2 signaling (e.g., DCI / MAC CE) used for cell switching may or may not be associated with an activated TCI state, i.e., the cell indicated by the L1 / L2 signaling used for cell switching may be selected regardless of the setting of the activated TCI state.

[0162] Option 3-4B Alternatively, the cells indicated by the L1 / L2 signaling (eg, DCI / MAC CE) used for cell switching may be limited to cells associated with an activated TCI state.

[0163] Option 3-4 shows the relationship between set #C and set #B, but is not limited to this. It may also be applied to the relationship between other sets (for example, set #C and set #M). In this case, set #B may be replaced with set #M.

[0164] <Fourth embodiment> In the fourth embodiment, an example of a relationship between a serving cell (or a set including a serving cell) configured for L1 beam measurement / reporting and a candidate cell (or a set including a candidate cell) configured for L1 beam measurement / reporting will be described. The fourth embodiment may be applied in combination with the first embodiment, the second embodiment, or the third embodiment.

[0165] The L1 beam measurement / reporting (or CSI measurement / reporting) of the cells in set #D is configured by the higher layer parameters. Set #D may be interpreted as BWP / CC in which the L1 beam measurement / reporting is configured by the higher layer parameters.

[0166] Furthermore, L1 beam measurement / reporting may be configured for candidate cells / serving cells by higher layer parameters. A set including the candidate cells / serving cells is included in set #B (or candidate cell set #B). Based on the L1 beam report, L1 / L2 cell switch indication signaling instructing a cell switch may be instructed to the UE.

[0167] [Option 4-1] The cells of set #D may be associated only with the serving cell (or the PCI of the serving cell). As a variation, the cells of set #D may be associated with additional cells (or the PCI of the additional cells).

[0168] Alternatively, the cells of set #D may be associated only with a specific serving cell (or a PCI of a specific serving cell). The specific serving cell may be an SpCell / PUCCH-SCell. As a variation, the cells of set #D may be associated with an SCell (or a PCI of an SCell).

[0169] 13 shows an example of set #D, in which the cells included in set #D are serving cells (here, SpCell#0, SCell#1, and SCell#2).

[0170] When L1 beam measurement / reporting is configured for a candidate cell / serving cell, there may be cases where the cells included in the candidate cell (e.g., set #B) for which L1 beam measurement / reporting is configured are different from the cells included in set #D (e.g., set #D including only serving cells) (see Figure 13). In such cases, it is necessary to appropriately control the relationship between set #B and set #D. It is also necessary to appropriately control the relationship between other sets #A / #C / #M and set #D.

[0171] The UE may receive first information about one or more serving cells for which L1 beam measurement and reporting are configured (e.g., information about cells included in set #D), second information about one or more candidate cells for which L1 beam measurement and reporting are configured (e.g., information about cells included in other sets #A / #B / #C / #M), and third information (e.g., MAC CE / DCI) indicating deactivation of at least one of the serving cell and the candidate cell. The UE may control L1 beam measurement and reporting of the serving cell and the candidate cell based on the first information, the second information, and the third information.

[0172] The relationship between set #D and sets #A / #B / #C / #M shown in the second embodiment may be defined / set based on at least one of options 4-2 and 4-3.

[0173] [Option 4-2] If at least one cell included in set #D (e.g., a serving cell) is deactivated, at least one of Option 4-2A and Option 4-2B below may be applied.

[0174] Option 4-2A When a cell included in set #D is deactivated, control may be exercised to prevent L1 beam measurement / reporting (or CSI measurement / reporting) associated with the deactivated cell. Note that control may be exercised to prevent L1 beam reporting (or CSI reporting) while still allowing L1 beam measurement (or CSI measurement).

[0175] 14 shows a case where set #D includes SpCell#0, SCell#1, and SCell#2, and set #B includes SpCell#0, candidate cells #0-1, #0-2, and #0-3, SCell#1, candidate cell #1-1, SCell#2, and candidate cells #2-1 and #2-2. Note that set #B may be configured to include only candidate cells (or may not include a serving cell).

[0176] FIG. 14 shows a case where SCell#1 included in set#D is deactivated.

[0177] When SCell#1 is deactivated, control may be performed so that an L1 beam measurement / report (or a CSI measurement / report) associated with the SCell#1 is not performed. The L1 beam measurement / report (or a CSI measurement / report) associated with the SCell#1 may be at least one of an L1 beam measurement / report (or a CSI measurement / report) of the SCell#1, an L1 beam measurement / report (or a CSI measurement / report) of a candidate cell associated with the SCell#1, and an L1 beam measurement / report (or a CSI measurement / report) of a candidate cell corresponding to the frequency of the SCell#1.

[0178] If L1 beam measurement / reporting for candidate cell #1-1 is configured in SCell #1 (e.g., configured in higher layer parameters related to SCell #1) and SCell #1 is deactivated, L1 beam measurement results for at least one of SCell #1 and candidate cell #1-1 may not be reported. For example, the UE may not be required to perform L1 beam measurement / reporting for SCell #1 and candidate cell #1-1 when SCell #1 is deactivated.

[0179] Even when SCell#1 is deactivated, L1 beam measurement / reporting of candidate cell#1-1 may be performed if the cell configuration and L1 beam measurement / reporting of candidate cell#1-1 are independent of (or not associated with) the cell configuration of SCell#1. For example, the UE may control not to report the L1 beam measurement results of the deactivated SCell#1 but to report the L1 beam measurement results of candidate cell#1-1.

[0180] Option 4-2B The L1 beam reporting associated with the deactivated cell may be performed in another cell (e.g., the serving cell). For example, when SCell#1 is deactivated, the UE may control the reporting of at least one L1 beam measurement result of SCell#1 and candidate cell#1-1 in another cell (e.g., SpCell#0 / SCell#2).

[0181] [Option 4-3] If at least one of the candidate cells is deactivated, at least one of the following options 4-3A and 4-3B may be applied: The candidate cell may be at least one of a candidate cell included in set #B, a target cell for L1 beam measurement / reporting, and a candidate cell to be switched to.

[0182] Option 4-3A When one of the candidate cells is deactivated, the L1 beam measurement / report (or CSI measurement / report) associated with the deactivated cell may be controlled not to be performed. Note that the L1 beam measurement (or CSI measurement) may be performed, but the L1 beam report (or CSI report) may be controlled not to be performed.

[0183] 15 shows a case where set #D includes SpCell#0, SCell#1, and SCell#2, and set #B includes SpCell#0, candidate cells #0-1, #0-2, and #0-3, SCell#1, candidate cells #1-1, SCell#2, and candidate cells #2-1 and #2-2. Note that set #B may be configured to include only candidate cells (or may not include a serving cell).

[0184] FIG. 15 shows a case where candidate cell 1-1 included in set #B is deactivated.

[0185] When candidate cell #1-1 is deactivated, the UE may be controlled not to perform L1 beam measurement / reporting (or CSI measurement / reporting) for candidate cell #1-1. In this case, the UE may be controlled to perform L1 beam measurement / reporting (or CSI measurement / reporting) for the serving cell (here, SCell #1) associated with candidate cell #1-1.

[0186] Option 4-3B When one of the candidate cells is deactivated, the L1 beam measurement / report (or CSI measurement / report) of the deactivated cell may continue. For example, when candidate cell #1-1 is deactivated, the UE may control the L1 beam measurement (or CSI measurement) of candidate cell #1-1 to report the measurement result.

[0187] In this embodiment, "not reported" may mean "not reported with reduced UCI payload" or "not reported while maintaining UCI payload (e.g., replacing dummy UCI bits)."

[0188] Furthermore, in this embodiment, the relationship between set #D and set #B may also be applied to the relationship between set #D and sets #A / #C / #M. In this case, set #B may be replaced with set #A / #C / #M.

[0189] [Variations] Option 4-2 / Option 4-3 may be applied when set #D (for example, SCell #1) is not configured (or when a serving cell corresponding to the frequency of the candidate cell is not configured).

[0190] 16 shows a case where set #D includes SpCell#0 and SCell#2, and set #B includes SpCell#0, candidate cells #0-1, #0-2, SCell#1, candidate cells #1-1, SCell#2, and candidate cells #2-1, #2-2. Note that set #B may be configured to include only candidate cells (or may not include a serving cell). In such a case, option 4-2 / option 4-3 may be applied.

[0191] In this case, the configuration may be such that L1 beam measurement / reporting of candidate cell #1-1 is not supported or not allowed (option 4-3A').

[0192] Alternatively, a configuration may be adopted in which L1 beam measurement / reporting of candidate cell #1-1 is supported or allowed (option 4-3B'). In this case, the RRC configuration for L1 beam reporting of candidate cell #1-1 may be configured in another cell. The other cell may be, for example, a serving cell corresponding to another frequency, a non-serving cell corresponding to another frequency, or a non-serving cell corresponding to the same frequency. Furthermore, the L1 beam measurement results (or CSI measurement results) of candidate cell #1-1 may be reported in another cell. The other cell may be, for example, a serving cell corresponding to another frequency, a non-serving cell corresponding to another frequency, or a non-serving cell corresponding to the same frequency.

[0193] <Supplementary information> At least one of the above embodiments may be applied only to UEs that have reported or support a particular UE capability.

[0194] The specific UE capabilities may indicate at least one of the following: If L1 beam (or CSI) measurement / reporting is supported, the UE capability regarding the number of cells (or beams, CSI) to be configured / reported, UE capabilities regarding the number of cells (or number of beams, number of CSIs) configured / reported per CSI resource configuration / per CSI reporting configuration / per frequency, UE capabilities regarding CSI resource configuration / CSI reporting configuration / number of cells (or number of beams, number of CSIs) configured / reported across frequencies, Supporting MAC CE (e.g., new MAC CE) directing activation / deactivation of candidate cells; Support L1 beam measurement / reporting for deactivated serving / candidate cells.

[0195] Furthermore, the above-mentioned specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency), or may be a capability for each frequency (e.g., one or a combination of a cell, band, band combination, BWP, component carrier, etc.), or may be a capability for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or may be a capability for each subcarrier spacing (SubCarrier Spacing (SCS)), or may be a capability for each Feature Set (FS) or Feature Set Per Component-carrier (FSPC).

[0196] Furthermore, the specific UE capability may be a capability that is applied across all duplexing methods (commonly regardless of the duplexing method), or may be a capability for each duplexing method (for example, Time Division Duplex (TDD) or Frequency Division Duplex (FDD)).

[0197] Furthermore, at least one of the above-described embodiments may be applied when the UE is configured with specific information related to the above-described embodiments by higher layer signaling.

[0198] If the UE does not support at least one of the specific UE capabilities or is not configured with the specific information, the UE may apply, for example, the behavior of Rel. 15 / 16 / 17.

[0199] (Addendum) The following inventions are added regarding one embodiment of the present disclosure. [Appendix 1-1] A terminal having: a receiving unit that receives information regarding at least one of a channel state information resource configuration and a channel state information reporting configuration of one or more candidate cells corresponding to different frequencies; and a control unit that controls reporting of channel state information including at least one of L1-RSRP (Reference Signal Received Power) and L1-SINR (Signal to Interference plus Noise Ratio) for the one or more candidate cells based on the information regarding at least one of the channel state information resource configuration and the channel state information reporting configuration. [Appendix 1-2] The terminal according to Supplementary Note 1-1, wherein when reporting of both the L1-RSRP and the L1-SINR is configured, the control unit controls to report both the L1-RSRP and the L1-SINR for a specific candidate cell or a specific reference signal resource index, and to report one of the L1-RSRP and the L1-SINR for another candidate cell or reference signal resource index. [Appendix 1-3] The terminal according to Supplementary Note 1-1 or Supplementary Note 1-2, wherein when reporting of one of the L1-RSRP and the L1-SINR is configured, the control unit controls to report both the L1-RSRP and the L1-SINR for a specific candidate cell or a specific reference signal resource index, and to report one of the L1-RSRP and the L1-SINR for other candidate cells or reference signal resource indexes. [Appendix 1-4] A terminal according to any one of Supplementary Note 1-1 to Supplementary Note 1-3, wherein at least one of the channel state information resource configuration and the channel state information reporting configuration includes at least one of information regarding the frequency at which measurements are performed and information regarding the frequency at which measurement results are reported.

[0200] [Appendix 2-1] A terminal comprising: a receiving unit that receives first information regarding one or more candidate cells to be set and second information regarding one or more candidate cells for which L1 beam measurement and reporting are to be set; and a control unit that controls L1 beam measurement and reporting of the one or more candidate cells for which L1 beam measurement and reporting are to be set based on the second information, wherein the candidate cells for which L1 beam measurement and reporting are to be set are included in the one or more candidate cells to be set. [Appendix 2-2] A terminal described in Appendix 2-1, in which the receiving unit receives instruction information instructing the activation or deactivation of one or more candidate cells to be configured, and when a candidate cell is deactivated by the instruction information, the control unit controls so as not to perform at least one of L1 beam measurement and reporting corresponding to the candidate cell. [Appendix 2-3] A terminal described in Supplementary Note 2-1 or Supplementary Note 2-2, in which the candidate cell to which the cell switching is instructed is included in the candidate cells for which the L1 beam measurement and reporting are configured. [Appendix 2-4] A terminal described in any of Supplementary Notes 2-1 to 2-3, wherein the receiving unit receives instruction information instructing activation of a transmission configuration indicator (TCI) state, and the candidate cell associated with the TCI state for which activation is instructed is included in the candidate cells for which the L1 beam measurement and reporting are set.

[0201] [Appendix 3-1] A terminal having a receiving unit that receives first information regarding one or more serving cells for which L1 beam measurement and reporting are configured, second information regarding one or more candidate cells for which L1 beam measurement and reporting are configured, and third information that instructs deactivation of at least one of the serving cell and the candidate cell, and a control unit that controls L1 beam measurement and reporting of the serving cell and the candidate cell based on the first information, the second information, and the third information. [Appendix 3-2] A terminal described in Supplementary Note 3-1, in which, when a serving cell is deactivated, the control unit controls so as not to perform at least one of L1 beam measurement and reporting of the serving cell and L1 beam measurement and reporting of a candidate cell associated with the serving cell. [Appendix 3-3] A terminal described in Supplementary Note 3-1 or Supplementary Note 3-2, in which when a candidate cell is deactivated, the control unit does not perform L1 beam measurement and reporting for the candidate cell, and L1 beam measurement and reporting for the serving cell corresponding to the candidate cell continues. [Appendix 3-4] A terminal described in any one of Supplementary Notes 3-1 to 3-3, wherein when a candidate cell is deactivated, the control unit continues to measure and report the L1 beam of the candidate cell.

[0202] (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.

[0203] 17 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 (which may be simply referred to as system 1) may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), or the like, which are specified by the Third Generation Partnership Project (3GPP).

[0204] 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.

[0205] 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.

[0206] 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))).

[0207] 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.

[0208] 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).

[0209] 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.

[0210] 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.

[0211] 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.

[0212] 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.

[0213] The core network 30 may include network functions (NFs) such as a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), and an Operation, Administration and Maintenance (Management) (OAM). Note that a single network node may provide multiple functions. Furthermore, communication with an external network (e.g., the Internet) may be performed via the DN.

[0214] The user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.

[0215] 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 the uplink (UL).

[0216] 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.

[0217] 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.

[0218] 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.

[0219] 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).

[0220] 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.

[0221] 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.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] 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.

[0226] 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.

[0227] 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.

[0228] 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).

[0229] (base station) 18 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.

[0230] 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.

[0231] 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.

[0232] 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.

[0233] 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.

[0234] 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.

[0235] 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.

[0236] 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.

[0237] 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.

[0238] 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.

[0239] 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.

[0240] 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 .

[0241] 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 .

[0242] 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.

[0243] 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.

[0244] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes providing NFs), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0245] 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.

[0246] The transceiver 120 may transmit information on at least one of a channel state information resource configuration and a channel state information report configuration for one or more candidate cells corresponding to different frequencies. The control unit 110 may instruct reporting of channel state information including at least one of L1-RSRP (Reference Signal Received Power) and L1-SINR (Signal to Interference plus Noise Ratio) for one or more candidate cells based on the information on at least one of a channel state information resource configuration and a channel state information report configuration.

[0247] The transceiver 120 may transmit first information regarding one or more candidate cells to be configured and second information regarding one or more candidate cells for which L1 beam measurement and reporting is configured. The control unit 110 controls to instruct L1 beam measurement and reporting for one or more candidate cells for which L1 beam measurement and reporting is configured based on the second information, and the candidate cells for which L1 beam measurement and reporting is configured may be included in the one or more candidate cells to be configured.

[0248] The transceiver 120 may transmit first information regarding one or more serving cells for which L1 beam measurement and reporting are configured, second information regarding one or more candidate cells for which L1 beam measurement and reporting are configured, and third information instructing deactivation of at least one of the serving cell and the candidate cell. The control unit 110 may use the first information, the second information, and the third information to control the L1 beam measurement and reporting of the serving cell and the candidate cell.

[0249] (user terminal) 19 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.

[0250] 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.

[0251] 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.

[0252] 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.

[0253] 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.

[0254] 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.

[0255] 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.

[0256] 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.

[0257] 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.

[0258] 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.

[0259] 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.

[0260] 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.

[0261] 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.

[0262] 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.

[0263] 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.

[0264] 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.

[0265] 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.

[0266] The transceiver 220 may receive information about at least one of a channel state information resource configuration and a channel state information reporting configuration for one or more candidate cells corresponding to different frequencies. The control unit 210 may perform control to report channel state information including at least one of L1-RSRP (Reference Signal Received Power) and L1-SINR (Signal to Interference plus Noise Ratio) for one or more candidate cells based on the information about at least one of the channel state information resource configuration and the channel state information reporting configuration.

[0267] When reporting of both L1-RSRP and L1-SINR is configured, the control unit 210 may perform control to report both L1-RSRP and L1-SINR for a specific candidate cell or a specific reference signal resource index, and to report one of L1-RSRP and L1-SINR for other candidate cells or reference signal resource indexes.

[0268] When reporting of one of L1-RSRP and L1-SINR is configured, the control unit 210 may perform control to report both L1-RSRP and L1-SINR for a specific candidate cell or a specific reference signal resource index, and to report one of L1-RSRP and L1-SINR for other candidate cells or reference signal resource indexes.

[0269] At least one of the channel state information resource configuration and the channel state information reporting configuration may include at least one of information regarding a frequency on which measurements are performed and information regarding a frequency on which measurement results are reported.

[0270] The transceiver 220 may receive first information regarding one or more candidate cells to be configured and second information regarding one or more candidate cells for which L1 beam measurement and reporting are configured. The controller 210 controls L1 beam measurement and reporting for one or more candidate cells for which L1 beam measurement and reporting are configured based on the second information, and the candidate cells for which L1 beam measurement and reporting are configured may be included in the one or more candidate cells to be configured.

[0271] The transceiver unit 220 may receive instruction information instructing activation or deactivation of one or more candidate cells to be configured, and if a candidate cell is to be deactivated according to the instruction information, the control unit 210 may control not to perform at least one of L1 beam measurement and reporting corresponding to the candidate cell. The candidate cell for which cell switching is instructed may be included in the candidate cells for which L1 beam measurement and reporting are configured. The transceiver unit 220 may receive instruction information instructing activation of a transmission configuration indicator (TCI) state, and the candidate cell associated with the TCI state for which activation is instructed may be included in the candidate cells for which L1 beam measurement and reporting are configured.

[0272] The transceiver 220 may receive first information regarding one or more serving cells for which L1 beam measurement and reporting are configured, second information regarding one or more candidate cells for which L1 beam measurement and reporting are configured, and third information instructing deactivation of at least one of the serving cell and the candidate cell. The controller 210 may control the L1 beam measurement and reporting of the serving cell and the candidate cell based on the first information, the second information, and the third information.

[0273] When a serving cell is deactivated, the control unit 210 may control not to perform at least one of L1 beam measurement and reporting for the serving cell and L1 beam measurement and reporting for a candidate cell associated with the serving cell. When a candidate cell is deactivated, the control unit 210 may not perform L1 beam measurement and reporting for the candidate cell, but may continue L1 beam measurement and reporting for the serving cell corresponding to the candidate cell. When a candidate cell is deactivated, the control unit 210 may continue L1 beam measurement and reporting for the candidate cell.

[0274] (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.

[0275] 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.

[0276] For example, a base station, a user terminal, or the like 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. 20 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, and the like.

[0277] 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.

[0278] 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.

[0279] 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.

[0280] 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.

[0281] 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.

[0282] 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.

[0283] 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.

[0284] 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.

[0285] 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).

[0286] 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.

[0287] 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.

[0288] (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.

[0289] 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.

[0290] 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.

[0291] 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.

[0292] 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.

[0293] 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.

[0294] 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.

[0295] 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.

[0296] 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.

[0297] 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.

[0298] 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.

[0299] 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.

[0300] 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.

[0301] 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.

[0302] 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.

[0303] 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.

[0304] 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.

[0305] 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.

[0306] 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."

[0307] 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.

[0308] 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.

[0309] 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.

[0310] 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.

[0311] 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.

[0312] 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.

[0313] 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.

[0314] 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).

[0315] 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).

[0316] 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).

[0317] 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.

[0318] 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.

[0319] 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).

[0320] 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.

[0321] 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.

[0322] 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.

[0323] In the present disclosure, a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control / operate based on the information.

[0324] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0325] 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.

[0326] 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. Note that at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.

[0327] The mobile body is a movable object that can move at any speed and naturally includes cases where the mobile body is stationary. Examples of the mobile body include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and objects mounted thereon. The mobile body may also be a mobile body that moves autonomously based on an operation command.

[0328] 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). Note that 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.

[0329] 21 is a diagram showing an example of a vehicle according to an embodiment. A vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0330] The drive unit 41 is configured with at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

[0331] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (e.g., an input / output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0332] The signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheels 46 / rear wheels 47 obtained by a rotation speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of the shift lever 45 obtained by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58.

[0333] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, a display, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information acquired from external devices via the communication module 60 or the like to provide various information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40.

[0334] The information service unit 59 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0335] The driving assistance system unit 64 is configured with various devices that provide functions for preventing accidents and reducing the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Units (IMUs), Inertial Navigation Systems (INSs)), Artificial Intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance functions or autonomous driving functions.

[0336] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 to and from the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58, which are provided in the vehicle 40.

[0337] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the above-mentioned base station 10 or user terminal 20. Furthermore, the communication module 60 may be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (or may function as at least one of the base station 10 and user terminal 20).

[0338] The communication module 60 may transmit at least one of signals from the above-mentioned various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above-mentioned input.

[0339] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0340] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided in the vehicle 40.

[0341] 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.

[0342] 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.

[0343] 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.

[0344] 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.

[0345] Each aspect / embodiment described in the present disclosure may be a technology other than Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or decimal number)), 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-WideBand (UWB), Bluetooth (registered trademark), or other appropriate wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. It may also be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0346] 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."

[0347] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0348] 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.

[0349] 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.

[0350] 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.

[0351] Furthermore, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," or the like.

[0352] 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.

[0353] 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."

[0354] 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.

[0355] 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."

[0356] 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.

[0357] 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.

[0358] In the present disclosure, terms such as "less than or equal to," "less than," "greater than," "more than," "equal to," etc. may be interchangeable. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative, as expressions with the prefix "i-th" (i is any integer) (for example, "highest" may be interchangeable as "i-th highest").

[0359] In this disclosure, the terms "of," "for," "regarding," "related to," "associated with," etc. may be read interchangeably.

[0360] 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.

Claims

1. A transmitter that, if channel state information (CSI) reporting of one or more candidate cells at multiple frequencies is supported, transmits capability information regarding the number of CSIs to be reported across the multiple frequencies; A terminal comprising: a control unit that controls the CSI report based on information regarding a resource configuration of the CSI and information regarding a reporting configuration of the CSI.

2. The terminal described in claim 1, wherein the control unit controls the inclusion of measurement results for a specific cell in the CSI report based on predetermined upper layer parameters included in information regarding the CSI reporting settings.

3. The terminal described in claim 1, wherein the CSI report includes at least one of measurement results regarding layer 1 reference signal received power and measurement results regarding layer 1 signal-to-interference-and-noise ratio for the one or more candidate cells.

4. If channel state information (CSI) reporting of one or more candidate cells at multiple frequencies is supported, transmitting capability information regarding the number of CSI to be reported across said multiple frequencies; and controlling the CSI report based on information regarding the CSI resource configuration and information regarding the CSI reporting configuration.

5. A receiver for receiving capability information regarding the number of channel state information (CSI) to be reported across multiple frequencies for one or more candidate cells, if CSI reporting is supported across the multiple frequencies; A base station comprising: a control unit that instructs the CSI report based on information related to the CSI resource configuration and information related to the CSI reporting configuration.

6. A system having a terminal and a base station, The terminal includes a transmitter for transmitting capability information regarding a number of channel state information (CSI) reports to be reported across multiple frequencies when CSI reporting of one or more candidate cells across multiple frequencies is supported; a control unit that controls the CSI report based on information related to a resource configuration of the CSI and information related to a reporting configuration of the CSI, The base station includes a receiving unit for receiving the capability information; A control unit that instructs the CSI reporting based on information related to the resource configuration and information related to the reporting configuration.

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