Terminal, wireless communication method, and base station

Abstract

A terminal according to one aspect of the present disclosure is characterized by comprising: a reception unit that receives a configuration including association between a plurality of resources and a plurality of measurement candidate resources in a first frequency resource among a plurality of frequency resources; and a control unit that, when a resource among the plurality of resources enters a serving state, determines, on the basis of the configuration, one or more measurement candidate resources associated with the resource among the plurality of measurement candidate resources. According to one aspect of the present disclosure, appropriate communication can be performed by using a unit different from that of an existing cell.

Description

Terminal, wireless communication method and base station

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

[0002] Long Term Evolution (LTE) has been specified for the Universal Mobile Telecommunications System (UMTS) network with the aim of achieving higher data rates and lower latency (Non-Patent Document 1). Also, LTE-Advanced (3GPP Rel. 10-14) has been specified with the aim of achieving higher capacity and more advanced features than LTE (Third Generation Partnership Project (3GPP (registered trademark)) 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, etc.) are also being considered.

[0004] 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

[0005] In future wireless communication systems (e.g., NR, 6G, etc.), it is being considered that terminals (user terminals, User Equipment (UE)) will perform cell-free communication, in which they communicate using units different from existing cells.

[0006] However, specific consideration of cell-free communication has not been sufficiently carried out, and if this consideration is insufficient, there is a risk that improvements in communication quality / communication throughput will be hindered.

[0007] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that perform appropriate communication using a unit different from that of existing cells.

[0008] A terminal according to one aspect of the present disclosure is characterized in that it includes: a receiving unit that receives a configuration including associations between a plurality of resources and a plurality of measurement candidate resources in a first frequency resource among a plurality of frequency resources; and a control unit that, when a resource among the plurality of resources enters a serving state, determines one or more measurement candidate resources among the plurality of measurement candidate resources that are associated with the resource based on the configuration.

[0009] According to one aspect of the present disclosure, appropriate communication is performed using a unit different from that of existing cells.

[0010] Figures 1A and 1B show an example of a unified / common TCI framework. Figures 2A and 2B show an example of a DCI-based TCI status indication. Figure 3A shows an example of UE mobility in Rel. 17. Figure 3B shows an example of UE mobility in Rel. 18. Figure 4 shows an example of a comparison between L3 handover and Rel. 18 LTM. Figure 5 shows an overview of L1L2-triggered mobility (LTM). Figure 6 shows some of the higher layer parameters (e.g., IE RadioLinkMonitoringConfig) used by a UE to configure Radio Link Monitoring (RLM). Figure 7 shows an example of an existing beam recovery procedure. Figures 8A and 8B show an overview of MIMO. Figure 9A shows an overview of a cellular system. Figure 9B shows an overview of a cell-free system. Figures 10A-10C show examples of overviews of various cell-free configuration scenarios. 11A and 11B are diagrams illustrating association and updating of measurement candidates according to the first embodiment. FIG. 12 is a diagram illustrating another example of association according to the first embodiment. FIG. 13 is a diagram illustrating another example of association according to the first embodiment. FIGS. 14A and 14B are diagrams illustrating another example of association according to the first embodiment. FIG. 15 is a diagram illustrating association according to the second embodiment. FIG. 16 is a diagram illustrating another example of association according to the second embodiment. FIG. 17 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. FIG. 18 is a diagram illustrating an example of a configuration of a base station according to an embodiment. FIG. 19 is a diagram illustrating an example of a configuration of a user terminal according to an embodiment. FIG. 20 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. FIG. 21 is a diagram illustrating an example of a vehicle according to an embodiment.

[0011] (TCI, spatial relationship, QCL) In NR, it is 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 a UE of at least one of a signal and a channel (referred to as a signal / channel) based on a transmission configuration indication state (TCI state).

[0012] The TCI state may represent that which is applied to a downlink signal / channel, and the equivalent of the TCI state that is applied to an uplink signal / channel may be expressed as a spatial relation.

[0013] 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.

[0014] The QCL is an index indicating the statistical properties of signals / channels. 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 a Doppler shift, a Doppler spread, an average delay, a delay spread, and a spatial parameter (e.g., a spatial Rx parameter) is the same between these different signals / channels (i.e., the signals / channels have a QCL with respect to at least one of these).

[0015] The spatial reception parameters may correspond to a reception beam (e.g., a reception analog beam) of the UE, and the beam may be identified based on a spatial QCL. The QCL (or at least one element of the QCL) in the present disclosure may be replaced with sQCL (spatial QCL).

[0016] A plurality of types (QCL types) of QCL may be defined. For example, four QCL types A to D may be provided, each having different parameters (or parameter sets) that can be assumed to be the same. The parameters (which may be referred to as QCL parameters) are as follows: 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.

[0017] The QCL information as shown in the above QCL types A to D may be called a QCL property.

[0018] The UE's assumption 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 channel of interest (in other words, the Reference Signal (RS) for that 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] The physical layer signaling may be, for example, Downlink Control Information (DCI).

[0022] 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)).

[0023] Furthermore, the RS that has a QCL relationship with the channel may be, for example, at least one of a synchronization signal block (SSB), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), a tracking CSI-RS (also called a tracking reference signal (TRS)), and a QCL detection reference signal (also called a QRS).

[0024] An SSB is a signal block including 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.

[0025] An RS of QCL type X in a TCI state may refer to an RS that has a QCL type X relationship with a certain channel / signal (DMRS), and this RS may be called a QCL source of QCL type X in the TCI state.

[0026] (Unified / Common TCI Framework) The unified TCI framework allows multiple types of channels / RSs (UL / DL) to be controlled by a common framework. The unified TCI framework does not specify TCI states or spatial relationships for each channel as in Rel. 15. Instead, it may specify a common beam (common TCI state) and apply it to all UL and DL channels, or it may apply a common beam for UL to all UL channels and a common beam for DL ​​to all DL channels.

[0027] One common beam for both DL and UL, or one common beam for DL ​​and one common beam for UL (two common beams overall) are considered.

[0028] The UE may assume the same TCI state for UL and DL (joint TCI state, joint TCI pool, joint common TCI pool, joint TCI state set). The UE may assume different TCI states for UL and DL (separate TCI state, separate TCI pool, UL separate TCI pool and DL separate TCI pool, separate common TCI pool, UL common TCI pool and DL common TCI pool).

[0029] The default beams for UL and DL may be aligned via MAC CE based beam management (MAC CE level beam indication). The default TCI state of the PDSCH may be updated to align with the default UL beam (spatial relationship).

[0030] DCI-based beam management (DCI-level beam indication) may indicate a common beam / unified TCI state from the same TCI pool for both UL and DL (joint common TCI pool, joint TCI pool, set). X (>1) TCI states may be activated by the MAC CE. The UL / DL DCI may select one from the X active TCI states. The selected TCI state may apply to both UL and DL channels / RS.

[0031] The TCI pool (set) may be multiple TCI states configured by RRC parameters, or multiple TCI states (active TCI states, active TCI pools, sets) activated by MAC CE among the multiple TCI states configured by RRC parameters. Each TCI state may be a QCL type A / D RS. SSB, CSI-RS, or SRS may be configured as the QCL type A / D RS.

[0032] The number of TCI states corresponding to each of one or more TRPs may be specified. For example, the number N (≧1) of TCI states applied to UL channels / RSs (UL TCI states) and the number M (≧1) of TCI states applied to DL channels / RSs (DL TCI states) may be specified. At least one of N and M may be notified / configured / instructed to the UE via higher layer signaling / physical layer signaling.

[0033] In the present disclosure, when N=M=X (X is any integer), it may mean that X TCI states (joint TCI states) common to UL and DL (corresponding to X TRPs) are notified / configured / indicated to the UE. Also, when N=X (X is any integer) and M=Y (Y may be any integer, Y=X), it may mean that X UL TCI states (corresponding to X TRPs) and Y DL TCI states (i.e., separate TCI states) (corresponding to Y TRPs) are notified / configured / indicated to the UE.

[0034] For example, when N=M=1 is written, this may mean that a TCI state common to one UL and DL for a single TRP is notified / configured / indicated to the UE (joint TCI state for a single TRP).

[0035] Also, for example, when N=1 and M=1 are written, this may mean that one UL TCI state and one DL TCI state for a single TRP are separately notified / configured / instructed to the UE (separate TCI states for a single TRP).

[0036] Also, for example, when N=M=2 is written, this may mean that a TCI state common to multiple (two) ULs and DLs for multiple (two) TRPs is notified / configured / instructed to the UE (joint TCI state for multiple TRPs).

[0037] Also, for example, when N=2 and M=2, it may mean that multiple (two) UL TCI states and multiple (two) DL TCI states for multiple (two) TRPs are notified / configured / instructed to the UE (separate TCI states for multiple TRPs).

[0038] In the above example, the values ​​of N and M are 1 or 2, but the values ​​of N and M may be 3 or more, and N and M may be different.

[0039] Support for N = M = 1 is being considered for Rel. 17. For example, it may be supported to indicate one common beam (e.g., a common beam) using RRC / MAC CE / DCI, and the common beam may be applied to multiple DL / UL channels / reference signals. Other cases may also be supported in Rel. 18 and later.

[0040] 1A and 1B illustrate an example of a unified TCI framework, where Fig. 1A illustrates an example of a joint DL / UL TCI state (e.g., Joint DL / UL TCI state), and Fig. 1B illustrates an example of a separate TCI state (e.g., Separate TCI (DL TCI state and UL TCI state)).

[0041] In the example of FIG. 1A , RRC parameters (information elements) configure multiple TCI states for both DL and UL. In this disclosure, the TCI states configured by the RRC parameters may be referred to as configured TCI states or configured TCI states (e.g., configured TCI states). The MAC CE may activate multiple TCI states from the configured TCI states. The DCI may indicate one of the activated TCI states. In this disclosure, the TCI state indicated by the DCI may be referred to as indicated TCI state or indicated TCI state (e.g., indicated TCI state).

[0042] The DCI may be a UL DCI (e.g., a DCI used to schedule a PUSCH) or a DL DCI (e.g., a DCI used to schedule a PDSCH). The indicated TCI state may apply to at least one (or all) of the UL / DL channels / RS. One DCI may indicate both a UL TCI and a DL TCI.

[0043] In the example of this figure, a point may be one TCI state that applies to both UL and DL, or two TCI states that apply to UL and DL respectively.

[0044] At least one of the multiple TCI states configured by the RRC parameters and the multiple TCI states activated by the MAC CE may be referred to as a TCI pool (common TCI pool, joint TCI pool, TCI state pool). The multiple TCI states activated by the MAC CE may be referred to as an active TCI pool (active common TCI pool).

[0045] In the present disclosure, higher layer parameters (RRC parameters) for setting multiple TCI states may be referred to as configuration information for setting multiple TCI states, or simply as "configuration information." Also, in the present disclosure, being instructed to set one of multiple TCI states using DCI may mean receiving indication information instructing one of the multiple TCI states included in DCI, or may simply mean receiving "instruction information."

[0046] In the example of Figure 1B, the RRC parameters configure multiple TCI states (joint common TCI pools) for both DL and UL. The MAC CE may activate multiple TCI states (active TCI pools) from the configured multiple TCI states. Separate active TCI pools for each of the UL and DL may be configured / activated.

[0047] The DL DCI or a new DCI format may select (indicate) one or more (e.g., one) TCI states. The selected TCI state may apply to one or more (or all) DL channels / RSs. The DL channels may be PDCCH / PDSCH / CSI-RS. The UE may determine the TCI state of each DL channel / RS using the TCI state behavior (TCI framework) of Rel. 16. The UL DCI or a new DCI format may select (indicate) one or more (e.g., one) TCI states. The selected TCI state may apply to one or more (or all) UL channels / RSs. The UL channels may be PUSCH / SRS / PUCCH. In this way, different DCIs may indicate UL TCI and DL DCI separately.

[0048] It is assumed that in Rel. 17 NR and later, the MAC CE / DCI supports beam activation / indication to a TCI state associated with a different physical cell identifier (PCI), and in Rel. 18 NR and later, the MAC CE / DCI supports indicating a serving cell change to a cell with a different PCI.

[0049] The method of setting / indicating the TCI state (e.g., joint DL / UL TCI state) in Fig. 1A and the method of setting / indicating the application of the TCI state (e.g., separate TCI state) in Fig. 1B may be switched between. Whether the joint DL / UL TCI state or the separate TCI state is applied may be configured by a base station to the UE by a higher layer parameter.

[0050] (TCI State Indication) The Rel. 17 unified TCI framework supports the following modes 1 to 3: [Mode 1] MAC CE based TCI state indication [Mode 2] DCI based TCI state indication by DCI format 1_1 / 1_2 with DL assignment [Mode 3] DCI based TCI state indication by DCI format 1_1 / 1_2 without DL assignment

[0051] A UE with a TCI state configured and activated with a Rel. 17 TCI State ID (e.g., tci-StateId_r17) receives DCI format 1_1 / 1_2 providing an indicated TCI state with the Rel. 17 TCI State ID for one CC, or receives DCI format 1_1 / 1_2 providing an indicated TCI state with the Rel. 17 TCI State ID for all CCs in the same CC list as the CC list configured by simultaneous TCI update list 1 or simultaneous TCI update list 2 (e.g., simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2). DCI format 1_1 / 1_2 may or may not be accompanied by a DL assignment if one is available.

[0052] If DCI format 1_1 / 1_2 does not carry a DL assignment, the UE can assume (verify) the following for that DCI: - the CS-RNTI is used to scramble the CRC for the DCI; - the values ​​of the following DCI fields (special fields) are set as follows: - the redundancy version (RV) field is all '1's; - the modulation and coding scheme (MCS) field is all '1's; - the new data indicator (NDI) field is 0; - the frequency domain resource assignment (FDRA) field is all '0's for FDRA type 0, or all '1's for FDRA type 1, or all '0's for Dynamic Switch (similar to PDCCH validation for release of DL semi-persistent scheduling (SPS) or UL grant type 2 scheduling).

[0053] Note that the DCI in the above-mentioned mode 2 / mode 3 may be referred to as beam instruction DCI.

[0054] In Rel. 15 / 16, if a UE does not support active BWP changes via DCI, the UE ignores the BWP indicator field. A similar behavior is considered for the relationship between support for Rel. 17 TCI states and the interpretation of the TCI field. It is considered that if a UE is configured with Rel. 17 TCI states, the TCI field will always be present in DCI format 1_1 / 1_2, and if the UE does not support TCI updates via DCI, the UE will ignore the TCI field.

[0055] In Rel. 15 / 16, whether or not a TCI field is present (TCI presence information in DCI, tci-PresentInDCI) is set for each CORESET.

[0056] The TCI field in DCI format 1_1 is 0-bit if the higher layer parameter tci-PresentInDCI is not enabled, and 3-bit otherwise. If the BWP indicator field indicates a BWP other than the active BWP, the UE shall follow the following behavior: [Action] If the higher layer parameter tci-PresentInDCI is not enabled for the CORESET used for the PDCCH carrying that DCI format 1_1, the UE shall assume that tci-PresentInDCI is not enabled for all CORESETs in the indicated BWP; otherwise, the UE shall assume that tci-PresentInDCI is enabled for all CORESETs in the indicated BWP.

[0057] The TCI field in DCI format 1_2 is 0 bit if the higher layer parameter tci-PresentInDCI-1-2 is not set, otherwise it is 1, 2 or 3 bits determined by the higher layer parameter tci-PresentInDCI-1-2. If the BWP indicator field indicates a BWP other than the active BWP, the UE shall follow the following actions. [Operation] If the higher layer parameter tci-PresentInDCI-1-2 is not set for the CORESET used for the PDCCH carrying that DCI format 1_2, the UE shall assume that tci-PresentInDCI is not enabled for all CORESETs in the indicated BWP; otherwise, the UE shall assume that tci-PresentInDCI-1-2 for all CORESETs in the indicated BWP is set with the same value as tci-PresentInDCI-1-2 set for the CORESET used for the PDCCH carrying that DCI format 1_2.

[0058] 2A shows an example of a DCI-based joint DL / UL TCI status indication, in which a TCI status ID indicating the joint DL / UL TCI status is associated with a value of the TCI field for the joint DL / UL TCI status indication.

[0059] 2B shows an example of DCI-based separate DL / UL TCI status indication. At least one TCI status ID, indicating a DL-only TCI status or indicating a UL-only TCI status, is associated with a value of the TCI field for the separate DL / UL TCI status indication. In this example, TCI field values ​​000 to 001 are associated with only one TCI status ID for DL, TCI field values ​​010 to 011 are associated with only one TCI status ID for UL, and TCI field values ​​100 to 111 are associated with both one TCI status ID for DL ​​and one TCI status ID for UL.

[0060] (Channels / RSs to which the indicated TCI state applies) The indicated TCI state by the MAC CE / DCI may apply to the following channels / RSs:

[0061] <PDCCH> - If followUnifiedTCIState is configured for CORESET0, the indicated TCI state applies. Otherwise, the Rel. 15 specifications apply for that CORESET. That is, CORESET0 follows the TCI state activated by the MAC CE or is QCL'd with SSB. - For CORESETs with USS / CSS type 3 and index other than 0, the indicated TCI state always applies. - For CORESETs with index other than 0 and at least CSS type other than 3, if followUnifiedTCIState is configured, the indicated TCI state applies. Otherwise, the configured TCI state for that CORESET applies to that CORESET.

[0062] <PDSCH> - The indicated TCI state always applies to all UE-dedicated PDSCHs. - For non-UE-dedicated PDSCHs (PDSCHs scheduled by DCI in the CSS), the indicated TCI state may apply if followUnifiedTCIState is set (for the CORESET of the PDCCH that schedules that PDSCH). Otherwise, the configured TCI state for that PDSCH applies to that PDSCH. If followUnifiedTCIState is not set for a PDSCH, whether a non-UE-dedicated PDSCH follows the indicated TCI state may depend on whether followUnifiedTCIState is set for the CORESET used to schedule that PDSCH.

[0063] <CSI-RS> For an A-CSI-RS for CSI acquisition or beam management, if followUnifiedTCIState is set (for CORESET of the PDCCH that triggers that A-CSI-RS), the indicated TCI state applies. For other CSI-RSs, the configured TCI state for that CSI-RS applies.

[0064] <PUCCH> - For all dedicated PUCCH resources, the indicated TCI state always applies.

[0065] <PUSCH> - For dynamic / configured grant PUSCH, the indication TCI state always applies.

[0066] <SRS> When the SRS resource set for the A-SRS used for beam management and the A / SP / P-SRS used for codebook (CB) / non-codebook (NCB) / antenna switching is configured to follow the unified TCI state, the indicated TCI state is applied. For other SRSs, the configured TCI state in the SRS resource set is applied.

[0067] (L1 / L2 Inter-Cell Mobility (L1L2-Triggered Mobility (LTM))) It is being considered that a UE performs UL transmission to one or more cells / TRPs. As a procedure in this case, the following Scenario 1 or Scenario 2 can be considered. 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 physical cell identity (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.

[0068] <Scenario 1> Scenario 1 corresponds to, for example, multi-TRP inter-cell mobility, but may be a scenario that does not correspond to multi-TRP inter-cell mobility.

[0069] (1) The UE receives from the serving cell the configuration necessary for using radio resources for data transmission and reception, including the SSB configuration for beam measurement of the TRP corresponding to a PCI different from that of the serving cell and the resources of the different PCI. (2) The UE performs beam measurement of the TRP corresponding to the different PCI and reports the beam measurement results to the serving cell. (3) Based on the above report, the Transmission Configuration Indication (TCI) state associated with the TRP corresponding to the different PCI is activated by L1 / L2 signaling from the serving cell. (4) The UE transmits and receives using UE-dedicated channels on the TRP corresponding to the different PCI. (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).

[0070] 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 assumption in the UE) is not changed. 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.

[0071] Figure 3A 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 serving cells via L1 / L2.

[0072] 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, such as by handover (also called L3 mobility).

[0073] <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. Since handover requires RRC reconnection, which results in a period when 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. Scenario 2 may be applied, for example, in Rel. 18. In scenario 2, for example, the following procedure is performed.

[0074] (1) The UE receives SSB configuration for a cell with a different PCI (additional cell) from the serving cell for beam measurement / serving cell change. (2) The UE performs beam measurement for the cell using the different PCI and reports the measurement results to the serving cell. (3) The UE may receive the configuration for the cell with a different PCI (serving cell configuration) via higher layer signaling (e.g., RRC). That is, pre-configuration for the serving cell change may be performed. This configuration may be performed together with or separately from the configuration in (1). (4) Based on the above report, the TCI state of the cell with a different PCI may be activated via L1 / L2 signaling in accordance with the serving cell change. The activation of the TCI state and the serving cell change may be performed separately. (5) The UE changes the serving cell (assumed serving cell) and starts reception / transmission using the pre-configured UE-dedicated channel and TCI state.

[0075] That is, in Scenario 2, the serving cell (the serving cell assumed by the UE) is updated by L1 / L2 signaling. Scenario 2 may be applied in Rel. 18.

[0076] Figure 3B shows an example of UE mobility in Rel. 18. In Rel. 18, the serving cell is switched by L1 / L2 (e.g., DCI / MAC CE). The UE can receive / transmit UE-dedicated channels / common channels to / from the new serving cell (or target serving cell). The UE may move out of the coverage of the current serving cell (e.g., current serving cell).

[0077] <Reducing interruption time> In Rel. 18 L1 / L2 inter-cell mobility (e.g., the above-mentioned scenario 2), the UE can reduce the time without data transmission (interruption time). Note that L1 / L2 inter-cell mobility may be interpreted as L1L2 triggered mobility (LTM). When Rel. 18 LTM is applied, the time without data transmission (interruption time) can be reduced compared to a method of handover based on L3 measurement results (L3 handover). Specific processes for each method are described below.

[0078] 4 shows an example of a comparison between L3 handover and Rel. 18 LTM. In the case of L3 handover, the UE first performs L3 measurements and decides to perform handover based on the measurement results. Then, the UE and the current serving cell perform RRC reconfiguration. The UE then performs DL and UL synchronization with the target serving cell. The UE performs L1 measurements / reports on the target serving cell, receives beam instructions, and then transmits the first UL data to the target serving cell. In this case, the UE does not transmit UL data during the period from the handover decision to the first UL data transmission (interruption time).

[0079] In the Rel. 18 LTM case, the UE first performs L3 measurements. Then, the UE, current serving cell, and target serving cell perform RRC reconfiguration. Then, the UE establishes DL synchronization with the target serving cell. Then, the UE performs L1 measurements / reports to the current serving cell and target serving cell to establish UL synchronization. Then, the current serving cell sends a cell switch command (including beam indication) via L1L2 (DCI / MAC CE) to the UE. Then, the UE transmits the first UL data to the target serving cell. In this case, the period from receiving the cell switch command to transmitting the first UL data is the UL transmission interruption time, but this interruption time is shorter than in the case of L3 handover.

[0080] (Outline of L1L2-triggered mobility (LTM) procedure) As described above, it is expected that mobility using triggers by L1 / L2 (L1L2-triggered mobility (LTM)) will be supported in Rel. 18 and later.

[0081] 5 is a diagram showing an overview of the L1L2-triggered mobility (LTM) procedure. LTM and L1 / L2 inter-cell mobility may be interchangeable. A UE receives candidate cell configurations from a network during UE reconfiguration. The information about the candidate cells may include information about a target serving cell, or information about the target serving cell and information about a current serving cell.

[0082] UE reconfiguration is T RRC , including Tproccesing1 / Tproccesing2. T RRC(e.g., max. 10 ms) is the processing time for RRC Reconfiguration carrying candidate cell configurations. Tproccesing1 / Tproccesing2 (e.g., max. 20 ms for same FR, max. 40 ms for different FR) are the time for UE processing before and after the cell switch command, respectively. This may include L2 / 3 reconfiguration, RF retuning, baseband retuning, security update if required, etc.

[0083] DL synchronization is T search , T Δ , T margin Includes: T search (e.g., 0 ms if the cell is known, up to 60 ms if the cell is unknown) is the time it takes to search for the target cell. Δ is the time for fine tracking and acquisition of all timing information. T margin (e.g., max. 2 ms) is the time for post-processing of SSB and CSI-RS.

[0084] L1 measurement is T meas (including SMTC period (e.g. 20 ms)). T meas is the measured delay from the appearance of the target to the cell switch command.

[0085] UL synchronization is T IU , T RAR , T cmd Includes: T IU (e.g., up to 15 ms) is the time of uncertainty interruption in acquiring the first available PRACH opportunity in the new cell. RAR (e.g., maximum 4 ms) is the RAR delay time. cmd (e.g., maximum 5 ms) is the processing time for L1 / L2 commands (HARQ and paging).

[0086] T cmd T after first-datais the time at which the UE performs its first DL reception / UL transmission on the indicated beam of the target cell after RAR.

[0087] For LTM, each candidate cell configuration may include at least the higher layer parameters CellGroupConfig and a configuration ID.

[0088] In LTM, the candidate cell configuration supports being a delta configuration on top of the reference configuration. Here, for the delta configuration, the UE stores the reference configuration as a separate configuration. That is, the reference configurations may be managed separately. For example, a separate reference configuration may be provided for the delta configuration of the candidate cell.

[0089] A MAC CE containing LTM-related information for cell switching may be used as a trigger for LTM cell switching. The LTM cell switching may be monitored by a timer. A MAC CE for cell switch command may be used to indicate connection to the target cell.

[0090] In LTM, the target cell (PCell / SCell) may be the current SCell / PCell, i.e., the current SCell / PCell (serving cell) may be configured as a candidate cell.

[0091] In Rel. 18 LTM, SSB-based measurements (e.g., L1-RSRP measurements) may be supported, and in this case, it is assumed that predetermined configuration parameters are applied / configured for candidate cells.

[0092] For example, for intra-frequency measurements (e.g., intra-F measurements), a physical cell ID (PCI) or a logical ID, and a time domain (e.g., time domain) may be set. The PCI or logical ID may be an ID defined in Inter-Cell Beam Management (ICBM) of Rel. 17. The time domain may be, for example, SMTC or the periodicity and SSB position in burst (e.g., periodicity and SSB position in burst).

[0093] For inter-frequency measurements (e.g., inter-F measurements), a physical cell ID (PCI) or logical ID, a time domain (e.g., time domain), a frequency domain location (e.g., frequency domain location), and a subcarrier spacing (SCS) may be configured. The PCI or logical ID may be an ID defined in Inter-Cell Beam Management (ICBM) of Rel. 17. The time domain may be, for example, SMTC or SSB position in burst (e.g., periodicity and SSB position in burst). The frequency domain location may be center frequency (e.g., center frequency).

[0094] In LTM of Rel. 18 and later, the configuration of each candidate cell may be provided by a predetermined upper layer parameter, which may be, for example, a higher layer parameter related to the configuration of a cell group (e.g., a CellGroupConfig IE).

[0095] (Radio Link Monitoring (RLM)) In NR, Radio Link Monitoring (RLM) is used.

[0096] In NR, the base station may configure a radio link monitoring reference signal (Radio Link Monitoring RS (RLM-RS)) for each BWP to the UE using higher layer signaling. The UE may receive configuration information for RLM (e.g., the RRC "RadioLinkMonitoringConfig" information element) (see FIG. 6).

[0097] The configuration information for the RLM may include fault detection resource configuration information (e.g., the upper layer parameter "failureDetectionResourcesToAddModList") and parameters related to the RLM-RS (e.g., the upper layer parameter "RadioLinkMonitoringRS").

[0098] The parameters related to the RLM-RS may include information indicating correspondence to the purpose of RLM, an index corresponding to the resource of the RLM-RS (e.g., an index included in the upper layer parameter "failureDetectionResources" (RadioLinkMonitoringRS in failureDetectionResourcesToAddModList)), etc. The index may be, for example, an index of the CSI-RS resource configuration (e.g., a non-zero power CSI-RS resource ID) or an SS / PBCH block index (SSB index). The purpose information may indicate a beam failure, a (cell-level) Radio Link Failure (RLF), or both.

[0099] Here, the purpose may mean, for example, determining whether the UE should monitor a reference signal associated with beam failure detection for a cell. For example, for an SCell, the network may set a value (parameter) only for beam failure. Furthermore, the higher layer signaling for configuring the RLM-RS may include the configuration of the BFD-RS described below in addition to the configuration of the RLM-RS. Furthermore, as described below, the RLM-RS and the BFD-RS may be interchangeable.

[0100] The UE may identify an RLM-RS resource based on an index corresponding to the resource of the RLM-RS, and perform RLM using the RLM-RS resource.

[0101] In Rel. 16 RLM, the UE follows the following procedure:

[0102] [Procedure] If the UE is not provided with an RLM-RS (e.g., the higher layer parameter RadioLinkMonitoringRS) and the UE is provided with a TCI state including one or more CSI-RS for PDCCH reception, the UE shall follow steps 1 to 4 below.

[0103] [Procedure 1] If the active TCI state for PDCCH reception includes only one RS, the UE uses the RS provided for the active TCI state for PDCCH reception for RLM. [Procedure 2] If the active TCI state for PDCCH reception includes two RSs, the UE assumes that one RS has QCL type D, and the UE uses the RS with QCL type D for RLM. The UE does not assume that both RSs have QCL type D. [Procedure 3] The UE is not required to use aperiodic or semi-persistent RSs for RLM. [Procedure 4] L max For =4, the UE selects N provided for active TCI states for PDCCH reception in multiple CORESETs associated with multiple search space sets in order of the smallest monitoring periodicity. RLM If more than one CORESET is associated with multiple search space sets with the same monitoring period, the UE determines the order of the CORESETs from the highest CORESET index.

[0104] where L max is the maximum number of SS / PBCH block indexes in a cell. The maximum number of SS / PBCH blocks transmitted in a half frame is L max is.

[0105] Thus, if the UE is not provided with RLM-RS, the UE makes an implicit RLM-RS decision and uses the active TCI state for PDCCH reception for RLM. max If N = 4, the UE first sorts the search space sets in ascending order of monitoring period, then in descending order of CORESET index. RLM Select RSs.

[0106] The UE uses N for link recovery procedures and RLM. LR-RLM Up to N RLM-RSs can be configured. LR-RLM From RLM-RS, L max Depends on N RLMUp to RLM-RSs are used for RLM. max N if =4 RLM = 2, and L max N when =8 RLM = 4, and L max = 64, N RLM = 8. Note that L max and N RLM and N LR-RLM The correspondence is not limited to this.

[0107] (Beam Failure Detection (BFD) / Beam Failure Recovery (BFR)) In NR, communication is performed using beamforming. For example, a UE and a base station (e.g., a gNB (gNodeB)) may use a beam used to transmit a signal (also referred to as a transmit beam, Tx beam, etc.) and a beam used to receive a signal (also referred to as a receive beam, Rx beam, etc.).

[0108] When beamforming is used, it is expected that radio link quality will deteriorate due to increased susceptibility to interference from obstacles. This deterioration in radio link quality may lead to frequent radio link failures (RLFs). Since RLFs require cell reconnection, frequent RLFs will result in degradation of system throughput.

[0109] In NR, in order to suppress the occurrence of RLF, when the quality of a specific beam deteriorates, a procedure for switching to another beam (which may be called Beam Recovery (BR), Beam Failure Recovery (BFR), L1 / L2 (Layer 1 / Layer 2) beam recovery, etc.) is performed. Note that the BFR procedure may also be simply called BFR.

[0110] Note that the beam failure (BF) in this disclosure may also be referred to as a link failure.

[0111] 7 is a diagram showing an example of a beam recovery procedure in an existing system (e.g., Rel. 15). The number of beams is merely an example and is not limited to this. In the initial state (step S101), the UE performs measurements based on reference signal (RS) resources transmitted using two beams.

[0112] The RS may be at least one of a synchronization signal block (SSB) and a channel state measurement RS (Channel State Information RS (CSI-RS)). The SSB may also be called an SS / PBCH (Physical Broadcast Channel) block.

[0113] The RS may be at least one of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), a Mobility Reference Signal (MRS), a signal included in an SSB, an SSB, a CSI-RS, a Demodulation Reference Signal (DMRS), a beam-specific signal, etc., or a signal configured by extending or modifying any of these. The RS measured in step S101 may also be called an RS for beam failure detection (Beam Failure Detection RS (BFD-RS)), an RS for use in a beam recovery procedure (BFR-RS), etc.

[0114] In step S102, the UE cannot detect the BFD-RS (or the reception quality of the RS deteriorates) due to interference with the radio waves from the base station. Such interference can occur due to, for example, obstacles, fading, interference, etc. between the UE and the base station.

[0115] The UE detects a beam failure when a predetermined condition is satisfied. For example, the UE may detect the occurrence of a beam failure when the block error rate (BLER) is less than a threshold for all configured BFD-RSs (BFD-RS resource configurations). When the occurrence of a beam failure is detected, a lower layer (physical (PHY) layer) of the UE may notify (indicate) a beam failure instance to an upper layer (MAC layer).

[0116] The criteria for the determination are not limited to BLER, but may be Layer 1 Reference Signal Received Power (L1-RSRP) in the physical layer. Also, instead of or in addition to RS measurement, beam failure detection may be performed based on a downlink control channel (Physical Downlink Control Channel (PDCCH)). The BFD-RS may be expected to be quasi-co-located (QCL) with the DMRS of the PDCCH monitored by the UE.

[0117] Here, the QCL is an index indicating the statistical properties of a 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 a Doppler shift, a Doppler spread, an average delay, a delay spread, and a spatial parameter (e.g., a spatial Rx parameter) is the same between these different signals / channels (i.e., the QCL is true for at least one of these).

[0118] The spatial reception parameters may correspond to a reception beam (e.g., a reception analog beam) of the UE, and the beam may be identified based on a spatial QCL. The QCL (or at least one element of the QCL) in the present disclosure may be replaced with sQCL (spatial QCL).

[0119] Information about BFD-RS (e.g., RS index, resource, number, number of ports, precoding, etc.), information about beam failure detection (BFD) (e.g., the above-mentioned threshold), etc. may be configured (notified) to the UE using higher layer signaling, etc. The information about BFD-RS may also be referred to as information about BFR resources, etc.

[0120] When a beam failure instance notification is received from the UE's PHY layer, the UE's upper layer (e.g., MAC layer) may start a predetermined timer (which may be called a beam failure detection timer). If the UE's MAC layer receives a certain number of beam failure instance notifications (e.g., beamFailureInstanceMaxCount configured by RRC) before the timer expires, the UE's MAC layer may trigger a BFR (e.g., start one of the random access procedures described below).

[0121] The base station may determine that the UE has detected a beam failure if there is no notification from the UE or if a predetermined signal (beam recovery request in step S104) is received from the UE.

[0122] In step S103, the UE starts searching for a new candidate beam to be used for new communication in order to recover the beam. The UE may select a new candidate beam corresponding to a predetermined RS by measuring the RS. The RS measured in step S103 may be called a new candidate RS, an RS for identifying a new candidate beam (New Candidate Beam Identification RS (NCBI-RS)), a CBI-RS, or a CB-RS (Candidate Beam RS). The NCBI-RS may be the same as or different from the BFD-RS. Note that the new candidate beam may simply be called a candidate beam or candidate RS.

[0123] The UE may determine a beam corresponding to an RS that satisfies a predetermined condition as a new candidate beam. The UE may determine a new candidate beam, for example, based on an RS among the configured NCBI-RSs whose L1-RSRP exceeds a threshold. Note that the criteria for determination are not limited to L1-RSRP. The L1-RSRP related to SSB may be referred to as SS-RSRP. The L1-RSRP related to CSI-RS may be referred to as CSI-RSRP.

[0124] Information about the NCBI-RS (e.g., RS resources, number of ports, precoding, etc.), information about the new candidate beam identification (NCBI) (e.g., the above-mentioned threshold), etc. may be configured (notified) to the UE using higher layer signaling, etc. Information about the new candidate RS (or NCBI-RS) may be acquired based on information about the BFD-RS. Information about the NCBI-RS may be referred to as information about NBCI resources, etc.

[0125] Note that BFD-RS, NCBI-RS, etc. may be read as Radio Link Monitoring RS (RLM-RS).

[0126] In step S104, the UE that has identified the new candidate beam transmits a beam failure recovery request (BFRQ). The beam recovery request may be referred to as a beam recovery request signal, a beam failure recovery request signal, or the like.

[0127] The BFRQ may be transmitted using, for example, at least one of an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), and a configured grant (CG) PUSCH.

[0128] The BFRQ may include information of the new candidate beam / new candidate RS identified in step S103. Resources for the BFRQ may be associated with the new candidate beam. The beam information may be notified using a beam index (BI), a port index of a predetermined reference signal, an RS index, a resource index (e.g., a CSI-RS Resource Indicator (CRI) or an SSB Resource Indicator (SSBRI)), etc.

[0129] In Rel. 15 NR, CB-BFR (Contention-Based BFR), which is a BFR based on a contention-based random access (RA) procedure, and CF-BFR (Contention-Free BFR), which is a BFR based on a contention-free random access procedure, are being considered. In CB-BFR and CF-BFR, the UE may use the PRACH resource to transmit a preamble (also referred to as an RA preamble, a random access channel (Physical Random Access Channel (PRACH)), a RACH preamble, etc.) as a BFRQ.

[0130] In CB-BFR, a UE may transmit a preamble randomly selected from one or more preambles. On the other hand, in CF-BFR, a UE may transmit a preamble assigned specifically to the UE by the base station. In CB-BFR, a base station may assign the same preamble to multiple UEs. In CF-BFR, a base station may assign a preamble individually to each UE.

[0131] Note that CB-BFR and CF-BFR may be referred to as CB PRACH-based BFR (contention-based PRACH-based BFR (CBRA-BFR)) and CF PRACH-based BFR (contention-free PRACH-based BFR (CFRA-BFR)), respectively. CBRA-BFR may be referred to as CBRA for BFR. CFRA-BFR may be referred to as CFRA for BFR.

[0132] Regardless of whether CB-BFR or CF-BFR is used, information about the PRACH resource (RA preamble) may be notified, for example, by higher layer signaling (such as RRC signaling). For example, the information may include information indicating a correspondence relationship between the detected DL-RS (beam) and the PRACH resource, and a different PRACH resource may be associated with each DL-RS.

[0133] In step S105, the base station that detected the BFRQ transmits a response signal (which may be referred to as a gNB response, etc.) to the BFRQ from the UE. The response signal may include reconfiguration information (e.g., DL-RS resource configuration information) for one or more beams.

[0134] The response signal may be transmitted, for example, in a UE common search space of the PDCCH. The response signal may be signaled using a PDCCH (DCI) scrambled with a cyclic redundancy check (CRC) by a UE identifier (e.g., a Cell-Radio RNTI (C-RNTI)). The UE may determine at least one of a transmit beam and a receive beam to use based on the beam reconfiguration information.

[0135] The UE may monitor the response signal based on at least one of a control resource set (CORESET) for BFR and a search space set for BFR.

[0136] For CB-BFR, contention resolution may be determined to be successful if the UE receives a PDCCH corresponding to its own C-RNTI.

[0137] Regarding the processing of step S105, a period for the UE to monitor a response from a base station (e.g., a gNB) to the BFRQ may be set. This period may be referred to as, for example, a gNB response window, a gNB window, a beam recovery request response window, etc. If no gNB response is detected within this window period, the UE may retransmit the BFRQ.

[0138] In step S106, the UE may transmit a message indicating that the beam reconfiguration is complete to the base station. The message may be transmitted, for example, via the PUCCH or the PUSCH.

[0139] A beam recovery success (BR success) may indicate, for example, that step S106 has been reached, whereas a beam recovery failure (BR failure) may indicate, for example, that a predetermined number of BFRQ transmissions have been made or that a beam-failure-recovery-timer has expired.

[0140] Rel. 15 supports the use of a random access procedure to perform a beam recovery procedure (e.g., BFRQ notification) for a beam failure detected in an SpCell (PCell / PSCell). On the other hand, Rel. 16 supports the use of at least one of a PUCCH (e.g., a scheduling request (SR)) transmission for BFR and a MAC CE (e.g., an UL-SCH) transmission for BFR to perform a beam recovery procedure (e.g., BFRQ notification) for a beam failure detected in an SCell.

[0141] For example, the UE may transmit information about beam failure using a MAC CE-based two-step method, which may include information about the cell that detected the beam failure and information about a new candidate beam (or a new candidate RS index).

[0142] [Step 1] If a BFR is detected, a PUCCH-BFR (scheduling request (SR)) may be transmitted from the UE to the PCell / PSCell. Then, an UL grant (DCI) for the following step 2 may be transmitted from the PCell / PSCell to the UE. If a beam failure is detected and a MAC CE (or an UL-SCH) for transmitting information about a new candidate beam exists, step 1 (e.g., PUCCH transmission) may be omitted and step 2 (e.g., MAC CE transmission) may be performed.

[0143] [Step 2] Next, the UE may transmit information about the cell where beam failure was detected (failed) (e.g., cell index) and information about the new candidate beam to the base station (PCell / PSCell) via an uplink channel (e.g., PUSCH) using a MAC CE. After that, through the BFR procedure, the QCL of the PDCCH / PUCCH / PDSCH / PUSCH may be updated to the new beam after a predetermined period (e.g., 28 symbols) after receiving a response signal from the base station.

[0144] Note that the numbers of these steps are for illustrative purposes only, and multiple steps may be combined or the order may be reversed. Furthermore, whether to perform BFR may be configured in the UE using higher layer signaling.

[0145] (BFD-RS) In Rel. 16, for each BWP of one serving cell, the UE may be provided with a set of periodic (P)-CSI-RS resource configuration indices (q0) via the failure detection resources (failureDetectionResources, failureDetectionResourcesToAddModList, RadioLinkMonitoringConfig) and at least one set of P-CSI-RS resource configuration indices and SS / PBCH block indices (q1) via the candidate beam RS list (candidateBeamRSList) or the extended candidate beam RS list (candidateBeamRSListExt-r16) or the candidate beam RS list for SCell (candidateBeamRSSCellList-r16).

[0146] Here, q0 bar is written as "q0" with an overline. Hereinafter, q0 bar will be written simply as q0. q1 bar is written as "q1" with an overline. Hereinafter, q1 bar will be written simply as q1.

[0147] The set of P-CSI-RS resources q0 provided by the failure detection resources may be referred to as explicit BFD-RS.

[0148] The UE may perform L1-RSRP measurements, etc. using RS resources corresponding to indices included in at least one of set q0 and set q1, to detect beam failure.

[0149] In the present disclosure, providing the above-described higher layer parameters indicating information on indexes corresponding to BFD resources may be interchangeable with configuring BFD resources, configuring a BFD-RS, etc. In the present disclosure, the BFD resources, the periodic CSI-RS resource configuration index or the set of SSB indices q0, the BFD-RS, the BFD-RS set, and the RS set may be interchangeable.

[0150] If the UE is not provided with q0 by failure detection resources (failureDetectionResources) for one BWP of its serving cell, it determines to include in set q0 a P-CSI-RS resource configuration index that has the same value as the RS index in the RS set indicated by the TCI-State (TCI-State) for the corresponding CORESET that the UE uses to monitor the PDCCH. If there are two RS indices in one TCI state, set q0 includes the RS index with QCL type D configuration for the corresponding TCI state. The UE assumes that set q0 includes up to two RS indices. The UE assumes single-port RSs in set q0.

[0151] This set q0 may be called the implicit BFD-RS (eg, implicit BFR-RS).

[0152] In this way, the UE determines the reference signal (BFD-RS (RS set)) to be used for the beam failure detection / beam recovery procedure depending on the TCI state for PDCCH. The UE assumes that the RS set includes up to two RSs.

[0153] (Beam Report Types) <Intra-cell beam reporting in Rel. 15 / 16> In Rel. 15 / 16, intra-cell beam reporting is supported. For example, L1-RSRP / SINR reporting can be configured by higher layer signaling (RRC).

[0154] For example, in calculating the L1-RSRP, the UE may be configured with either or both of the CSI-RS resource and the SS / PBCH block resource if the resource is associated with QCL Type C / Type D.

[0155] A UE may also be configured with up to 16 CSI-RS resource sets, with a maximum of 64 resources in each set, and the total number of different CSI-RS resources across all resource sets may not exceed 128.

[0156] For L1-RSRP reporting, if the higher layer parameter nrofReportedRS (e.g., in CSI-ReportConfig) is set to 1, the reported L1-RSRP value is defined as a 7-bit value in the range [-140 to -44] dBm with a step size of 1 dB.

[0157] Here, the maximum measured value of L1-RSRP is quantized to a 7-bit value in the range of [-140 to -44] dBm in 1 dB steps, and the differential value of L1-RSRP is quantized to a 4-bit value.

[0158] The difference value is calculated with a step size of 2 dB with reference to the largest measurement that is part of the same L1-RSRP reporting instance.

[0159] For example, for L1-SINR calculation and channel measurement, the UE may be configured with either or both of NZP CSI-RS resources and SS / PBCH block resources, and for interference measurement, the UE may be configured with either NZP CSI-RS resources or CSI-IM resources.

[0160] For channel measurement, the UE may be configured with a CSI resource setting for up to 64 CSI resources or up to 16 CSI-RS resource sets with SS / PBCH block resources.

[0161] For L1-SINR reporting, if the upper layer parameter nrofReportedRS is set to 1, the reported L1-SINR value is defined as a 7-bit value in the range [-23 to 40] dBm with a step size of 0.5 dB.

[0162] If the higher layer parameter nrofReportedRS is set to be greater than 1, or if the higher layer parameter groupBasedBeamReporting is set to "enabled", the UE uses the differential value-based L1-SINR value for reporting.

[0163] The difference value is calculated with a step size of 1 dB with reference to the largest measurement that is part of the same L1-SINR reporting instance.

[0164] In this disclosure, the Rel. 15 / 16 in-cell beam reporting (which may simply be referred to as in-cell beam reporting) may also be referred to as type 1 beam reporting (beam reporting type 1) or beam reporting for in-cell beam switching.

[0165] <Inter-cell beam reporting in Rel. 17> As described above, Rel. 17 supports L1 / L2 inter-cell mobility (inter-cell beam management (ICBM)). For example, a UE can transmit and receive UL / DL channels / signals to and from a PCI of a cell that is different from the PCI of the serving cell. For example, if a non-serving cell has a higher RSRP than the serving cell, the UE can transmit and receive UL / DL channels / signals to and from the non-serving cell without performing a handover.

[0166] In L1-RSRP reporting, absolute / differential values ​​of L1-RSRP may be used, as in Rel. 15 / 16. In inter-cell beam reporting (type 2-1 beam reporting, described later) in Rel. 17, each L1-RSRP value is associated with a PCI ID (for the serving cell / additional cell / candidate cell). The association between the L1-RSRP value and the PCI ID may be set / indicated by higher layer signaling / physical layer signaling.

[0167] Configuration by higher layer signaling supports up to seven additional cells, where ID=0 means the PCI of the serving cell.

[0168] In this disclosure, inter-cell beam reporting (in Rel. 17 / 18) may be referred to as Type 2 beam reporting (Beam Report Type 2). Type 2 beam reporting can be further classified into Types 2-1 and 2-2, which will be described later.

[0169] In this disclosure, Rel. 17 beam reporting may be referred to as Type 2-1 beam reporting or beam reporting for inter-cell beam switching.

[0170] <Inter-cell beam reporting in Rel. 18> In addition, Rel. 18 supports only SSB-based L1-RSRP reporting (beam reporting), where the number of candidate cells L is 1 to 4, and the number of beams M per cell is 1 to 4. For example, in beam reporting, a 7-bit absolute value (the largest L1-RSRP value among all cells) is reported for one cell, and all remaining L1-RSRP values ​​are reported as differential values.

[0171] Regarding beam selection in SSB-based L1-RSRP reporting, the maximum value of M*L that can be set by RRC for the above-mentioned M and L, and the combination of M and L may depend on the UE capabilities.

[0172] In the L1-RSRP report, the absolute value / differential value of the L1-RSRP may be used, as in Rel. 15 / 16 / 17.

[0173] In the L1-RSRP report, the reported L1-RSRP value is defined as a 7-bit value in the range of [-140 to -44] dBm with a step size of 1 dB.

[0174] Here, the maximum measured value of L1-RSRP is quantized to a 7-bit value in the range of [-140 to -44] dBm in 1 dB steps, and the differential value of L1-RSRP is quantized to a 4-bit value.

[0175] The difference value is calculated with a step size of 2 dB with reference to the largest measurement that is part of the same L1-RSRP reporting instance.

[0176] The L1-RSRP report includes the SSBRIs between the configured candidate cells. That is, the L1-RSRP report includes the SSBRIs of the configured candidate cells and the corresponding L1-RSRPs. The format may be the same as that of the existing specifications.

[0177] In this disclosure, the beam report of Rel. 18 may be referred to as a Type 2-2 beam report or a beam report for cell switching. Note that the Type 2-2 beam report does not include information about the PCI (PCI ID). Instead, the SSBRI may include information about the PCI. For example, if four cells have 64 SSBs, the SSBRI may be any of {0, 1, ..., 255}.

[0178] (Cell-free) Existing wireless communication systems (e.g., 5G NR) have adopted a cellular system in which one cell is formed by one antenna / transmitting / receiving point (TRP). The area formed by the cell is fixed / static.

[0179] In addition, existing wireless communication systems (e.g., Rel. 16 and later) have introduced distributed multi-input multi-output (Distributed MIMO, e.g., multi-TRP using multiple TRPs), which forms a communication area using the coverage of multiple antennas / TRPs. Distributed MIMO allows simultaneous communication using multiple antennas / TRPs and communication using one antenna / TRP.

[0180] By adopting distributed MIMO, it is possible to create a more favorable line-of-sight environment and improve MIMO performance.

[0181] 8A and 8B are diagrams illustrating an overview of MIMO. Fig. 8A illustrates an example of co-located MIMO. In co-located MIMO, one UE communicates with one antenna / TRP.

[0182] On the other hand, Figure 8B illustrates an example of distributed MIMO, in which one UE communicates with multiple antennas / TRPs in cooperation with each other.

[0183] In future wireless communication systems (e.g., Rel. 20 and later), the introduction of cell-free communication is being considered with the aim of further improving performance and energy efficiency through reducing interference between multiple antennas / TRPs, creating a line-of-sight environment for high-frequency use, improving frequency utilization efficiency throughout the system, and applying equal, high-quality communication to each user.

[0184] Self-Free may also be referred to as cell-free massive MIMO (mMIMO) or large-scale distributed MIMO (D-MIMO). Self-Free uses coherent cooperation of multiple access points. Self-Free may include at least one of ultra-dense deployment, scalable cooperation, user-centric clustering, super-carrier aggregation, and analog fronthaul. The user plane for cell-free may perform more flexible scheduling than existing scheduling. The control plane for cell-free may maintain some form of cell to facilitate signaling.

[0185] In cell-free, unlike conventional cellular systems, one area (which may be called a cell / sub-cell, etc.) may be formed by multiple antennas / TRPs. In other words, the area may mean a cell that is independent of the location of the antenna / TRP.

[0186] In cell-free, the set of antennas / TRPs used to form a coverage area may be changed according to the needs of UEs. For example, the set of antennas / TRPs may be changed based on the number of UEs, the number of traffic, communication purposes (e.g., initial access, data communication, measurement, reporting, etc.), etc., rather than the coverage of the antennas / TRPs.

[0187] In other words, in cell-free, the coverage between multiple antennas / TRPs may overlap.

[0188] In cell-free mode, the direction in which a synchronization signal (which may also be called, for example, a synchronization signal block (SSB), a synchronization signal / physical broadcast channel (SS / PBCH) block, etc.) is transmitted may be controlled for each antenna / TRP.

[0189] In addition, in cell-free, a central unit (CU) / distributed unit (DU) may be virtualized for each antenna, or each antenna may be managed by only the CU.

[0190] Fig. 9A is a diagram showing an overview of a cellular system, in which cells formed by each antenna / TRP are shown, and UEs communicate based on these cells.

[0191] On the other hand, Figure 9B is a diagram showing an overview of a cell-free system. In the example shown in Figure 9B, the installed antennas / TRPs do not form fixed / static cells in a cellular system. As shown in Figure 9B, in a cell-free system, one or more antennas / TRPs form areas according to conditions. Therefore, in a cell-free system, each antenna / TRP does not need to correspond to the same physical cell ID, and the areas between multiple antennas / TRPs may overlap.

[0192] Self-regulation may be achieved, for example, by coordinating a set of antennas / TRPs controlled by a central control unit (e.g., CU).

[0193] In a cell-free system, a first cell (which may be called, for example, a cell / super cell / macro cell / large cell, etc.) with a fixed physical range like a cell in a 5G NR system, and a second cell (which may be called, for example, a subcell / area / micro cell / cell / small cell / second cell within the first cell, etc.) with a quasi-static / dynamic physical range that varies based on conditions may be formed.

[0194] For example, a first cell may be referred to as a supercell to distinguish it from a second cell. When a supercell is composed of multiple second cells, the second cells may have the same definition / operation / coverage as existing cells in NR. For example, a second cell may be referred to as a subcell to distinguish it from a first cell. When a supercell or a cell is composed of multiple subcells, the subcells may have the same definition / operation / coverage as existing cells in NR.

[0195] The first cell may be a cell that is newly defined in a future wireless communication system, or may be a cell defined in an existing wireless communication system that is reused.

[0196] The configurations of the first cell and the second cell can be considered as follows: Assumption 1 and Assumption 2: The first cell is composed of multiple TRPs with one cell ID (physical cell ID (PCI)). The multiple TRPs can transmit and receive in coordination. Assumption 2: The first cell is composed of multiple TRPs (or sub-cells) with different cell IDs. The multiple TRPs / sub-cells can transmit and receive in coordination.

[0197] 10A is a diagram showing an example of the outline of the cell-free configuration assumption 1. In the example shown in FIG. 10A, each TRP included in the first cell (super cell / cell) has the same PCI (PCI #0). Multiple TRPs can communicate with one UE in a coordinated manner.

[0198] Figure 10B is a diagram showing an example of the outline of the cell-free configuration assumption 2. In the example shown in Figure 10B, each TRP included in the first cell (super cell / cell) has a different PCI (PCI #0 to #9). Multiple TRPs can communicate with one UE in a coordinated manner.

[0199] Figure 10C is a diagram showing another example of the outline of the cell-free configuration assumption 2. In the example shown in Figure 10C, a PCI is assigned to each TRP included in the first cell (supercell / cell). In the example shown in Figure 10C, unlike the example of Figure 10B, the same PCI may correspond to multiple TRPs. Multiple TRPs can communicate cooperatively with one UE.

[0200] Transmission / reception with TRP / subcell coordination may be based on at least one of the following schemes supported in NR: - Transmission of a single TRP / subcell with dynamic TRP / subcell switching (single-TRP transmission). - Joint transmission using multiple TRPs / subcells (multi-TRP joint transmission). The joint transmission may be based on a single DCI or multiple DCIs. The joint transmission may be non-coherent joint transmission (NCJT) or coherent joint transmission (CJT).

[0201] For cell-free, assuming ideal backhaul and tight coordination, in the joint transmission scheme, CJT may be prioritized over NCJT, and single DCI-based joint transmission may be prioritized over multi-DCI-based joint transmission.

[0202] (Analysis) For example, when updating the current serving beam / serving cell due to UE movement or channel variation, the network (NW) may be required to update the configuration of DL / UL RSs for L1 measurements for DL / UL Beam Management (BM) by at least one of RRC reconfiguration and MAC CE signaling.

[0203] However, RRC / MAC CE updating RS / configuration for measurements requires high delay / latency and signaling overhead.

[0204] Future wireless communication systems (e.g., Rel. 20 / 21 and beyond) are expected to achieve higher speeds and lower latency. For example, in cell-free MIMO scenarios, smoother and faster updating of RSs / settings for measurements for BM is required.

[0205] Similarly, for example, when mobility occurs and the serving beam / serving cell is changed, the NW may need to update the cell / RS configuration for RRM L3 measurement / reporting by reconfiguring the RRC. Therefore, there is a need for smoother and faster updating of the cell / RS / configuration for RRM measurements.

[0206] However, there has been insufficient consideration of specific methods for updating the settings of measurement cells / RSs when updating the serving beam / serving cell, for example.

[0207] If these considerations are not sufficient, it may not be possible to achieve faster and lower latency communications, which may result in a reduction in improvements in communication quality / throughput.

[0208] Therefore, the present inventors came up with a method for solving this problem.

[0209] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0210] (Various Reinterpretations) In the present disclosure, a word enclosed in "( )" in a sentence may indicate an explanation of the word immediately preceding it (for example, an explanation of spelling), a paraphrase, a specific example, a supplementary explanation, etc. Furthermore, in the present disclosure, a word enclosed in "[ ]" in a sentence may be interpreted including the word in the meaning of the entire sentence, or may be interpreted excluding (ignoring) the word in the meaning of the entire sentence. Note that "( )" and "[ ]" may also be used for purposes / meanings other than those mentioned above.

[0211] 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."

[0212] In the present disclosure, terms such as notify, 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.

[0213] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, information elements (IEs), settings, etc. may be interchangeable. In the present disclosure, Medium Access Control (MAC) control elements (CEs), update commands, activation / deactivation commands, etc. may be interchangeable.

[0214] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, other messages (e.g., messages from the core network such as positioning protocol (e.g., NR Positioning Protocol A (NRPPa) / LTE Positioning Protocol (LPP)) messages), or a combination thereof.

[0215] 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.

[0216] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0217] (Wireless Communication Method) <Super Cell / Cell> A super cell may correspond to the first cell in the above-mentioned cell-free system. Also, a cell may correspond to the second cell in the above-mentioned cell-free system. A new Radio Resource Control (RRC) configuration / reconfiguration may be introduced for the configuration of the super cell. For example, the UE may receive a configuration related to the super cell in at least one of the following cases. Note that the configuration may be incorporated into an existing configuration, or a new configuration may be provided.

[0218] Case 1: The super cell is configured by RRC reconfiguration. For example, the super cell configuration may be incorporated (included) in the RRC reconfiguration framework. Case 2: The super cell is configured by cell group configuration (e.g., CellGroupConfig). For example, the cell group configuration may include the super cell configuration. Case 3: The super cell is configured by serving cell configuration (e.g., serving cell config). For example, the serving cell configuration may include the super cell configuration. Case 4: The super cell is configured by uplink and downlink configuration (e.g., UL / DL config). For example, the super cell configuration may be included in at least one of the uplink and downlink configurations. Case 5: The super cell is configured by LTM configuration (e.g., LTM-config) / LTM candidate (e.g., LTM candidate). For example, the super cell configuration may be included in at least one of the LTM configuration and the LTM candidate configuration. Case 6: The super cell is configured by a CSI report configuration (CSIreport config) / CSI resource configuration (CSI resource config). For example, the CSI report configuration / CSI resource configuration may include the super cell configuration. Case 7: The super cell may be configured by a TCI state configuration (e.g., TCI state config). For example, the TCI state configuration may include the super cell configuration. Case 8: The super cell may be configured by other configurations. For example, a configuration (e.g., SuperCellConfig) for configuring the super cell may be provided.

[0219] Furthermore, at least one of the above-described cases may be used to configure a cell (second cell) related to the super cell. For example, the UE may receive a configuration related to the cell according to at least one of the above cases.

[0220] The setting related to the super-cell may include association with a cell. The setting related to the cell may include association with a super-cell. The settings of the super-cell and the cell may be integrated or may be set independently of each other.

[0221] <Resource> In the present disclosure, a resource may include at least one of a cell, a beam, an RS, and a TCI state.

[0222] Resources for providing services to a UE may be referred to as serving resources or serving-state resources. Serving resources may include at least one of a serving cell, a serving beam, a serving RS, and a serving TCI state. For example, a serving resource may be changed to another resource due to a beam update, LTM, handover, or mobility in a different layer. A certain resource being a serving resource may mean that the resource is in a serving state, that the UE is using the resource in communication with the network, that the resource is connected / communicating / used by the UE, or that the resource is providing a service to the UE. A serving resource may be, for example, a cell / beam / RS / TCI state in a serving state, and these terms may be interchangeable. For example, a serving cell may be a serving cell or a cell used for other communications. Furthermore, a cell may be interchangeable with a TRP. For example, a cell in a serving state may be read as a TRP in a serving state (serving TRP).

[0223] The measurement candidate resource may be a resource measured / reported by a UE for at least one of beam management (BM) and radio resource management (RRM), may be a resource that the NW can configure for the UE for BM / RRM, or may be a resource surrounding a serving resource. In the present disclosure, measurement candidate, measurement target, report candidate, report target, switch candidate, and switch target may be read interchangeably.

[0224] First Embodiment The first embodiment relates to the association of serving resources with measurement candidate resources.

[0225] When the serving resource is changed, the NW can estimate the UE's location and antenna direction, so that the NW can know, for example, measurement candidate resources after the serving resource is changed.

[0226] Therefore, an association between a serving resource and a set of measurement candidate resources may be configured. The set of measurement candidate resources may be one or more resources different from the serving resource, one or more resources in the vicinity (e.g., adjacent) of the serving resource, or multiple resources including the serving resource. In one example, the association may be configured before the resource enters a serving state, before measurement, during initial access / RRC connection, by RRC reconfiguration, or configured / updated / indicated in response to a change / switch of the serving resource. Furthermore, the measurement candidate resource may be, for example, a measurement candidate cell / beam / RS. The terms measurement candidate resource, measurement candidate cell / beam / RS, and measurement candidate resource set may be interchangeable. The UE may measure the set of measurement candidate resources for at least one of BM and RRM and report the measurement results. For example, when a UE is configured with multiple measurement candidate resources (a set of measurement candidate resources) for measurement and reporting, the UE may measure the multiple measurement candidate resources (e.g., all or one or more) and report a part (e.g., one or more) of the multiple measurement candidate resources. Measurement candidate resources (a set of cells / beams / RSs) may be interchangeable with resources for measurement (a set of cells / beams / RSs) and resources for reporting (a cell / beam / RS or a set of cells / beams / RSs).

[0227] By configuring the association between a serving resource and a set of measurement candidate resources, when a resource enters a serving state due to, for example, a beam update, LTM, handover, or mobility at a different layer, the UE can automatically update the set of measurement candidate resources associated with that resource according to the association configuration, thereby reducing signaling overhead and latency for configuration updates.

[0228] The first embodiment may be applied to the concepts of supercells and cells in cell-free systems. Next, some aspects of the first embodiment will be illustrated.

[0229] <<Aspect 1>> Aspect 1 supports a configuration indicating an association between a resource that can be a serving resource (e.g., a cell / beam / RS / TCI state that can be a serving resource, a candidate resource for a serving resource) and a set of measurement candidate resources (e.g., a set of cells / beams / RSs). Hereinafter, a configuration indicating the association may be referred to as an association or an association configuration. The association may be, for example, an RRC configuration. According to one embodiment, the association may be included in a super-cell configuration, a cell configuration (e.g., a serving cell configuration), or may be configured independently of the super-cell configuration and the cell configuration. The concepts of a super-cell and a cell may include, for example, a cell-free configuration and may include at least one of the above-described assumption 1 (e.g., FIG. 10A ) and assumption 2 (e.g., FIG. 10B and FIG. 10C ).

[0230] Then, when a certain resource becomes a serving resource due to transition / change / update caused by UE movement, channel variation, etc. (e.g., when a certain resource is indicated as a serving resource by the NW or when a UE determines a certain resource as a serving resource), the UE may automatically update the set of measurement candidate resources based on the association. For example, the UE may determine a set of measurement candidate resources (e.g., one or more measurement candidate resources) associated with the serving resource based on the association.

[0231] 11A and 11B are diagrams illustrating an association and updating of measurement candidates based on the association. An association may include one or more entries. Each entry may associate first information (e.g., a resource that can be a serving resource) with second information (e.g., a set of measurement candidate resources). An association may be a list including one or more RRC information elements (one or more entries). Each RRC information element may associate one piece of first information with one or more pieces of second information, or may include one piece of first information with one or more pieces of second information.

[0232] The first information indicates, for example, a resource that may be a serving resource (e.g., a cell / beam / RS / TCI state, a serving resource candidate). In one example, the first information may be a serving beam indicated by a DCI / MAC CE / RRC and determined by the UE (e.g., an indicated TCI state for a unified TCI, a TCI state for a specific channel / RS (such as a PDCCH)).

[0233] The association may include, for example, first information corresponding to cell / beam / RS / TCI states in a specific range. For example, the association includes, as the first information, cell / beam / RS / TCI states that may become serving resources due to UE movement, channel fluctuation, etc. The specific range may be, for example, all cells / beams included in a supercell, or some cells / beams included in the supercell. The specific range may be, for example, multiple cells / beams corresponding to the same PCI or different PCIs. In the example of FIG. 11A , the first information includes values ​​indicating the TCI states of PCIs corresponding to cells included in the specific range.

[0234] The second information indicates, for example, a set of measurement candidate resources (e.g., a set of measurement candidate cells / beams / RSs). For example, the second information may be a set of measurement candidate resources when the resource of the first information associated in the association becomes a serving resource. The measurement candidate resources may be, for example, resources to be measured for RLM / BFR / L1-RSRP / RRM L3 measurement / reporting. In the example of FIG. 11A, SSBs of at least one PCI are illustrated as the second information. For example, the second information may be one or more SSBs for one PCI.

[0235] 11B illustrates an example of a serving resource update due to UE movement, channel fluctuation, or the like. For example, assume that a UE communicating in TCI state #3b in a cell with PCI #3 transitions to communication in TCI state #0a of PCI #0 due to a movement-related update. That is, assume that the serving resource transitions from TCI state #3b of the cell with PCI #3 to TCI state #0a of PCI #0. In this case, the UE may identify an entry whose first information indicates TCI state #0a of PCI #0 by, for example, referring to the association in FIG. 11A. Then, the UE may identify a measurement candidate resource set (SSB #1, SSB #5, ... of PCI #0, SSB #8, SSB #9, ... of PCI #3) of the second information associated with the identified entry. In this way, the UE can determine the measurement candidate resource set corresponding to the serving resource of the transition destination.

[0236] As described above, according to aspect 1, for example, first information for identifying serving resources in a certain range is associated with second information for identifying a set of measurement candidate resources corresponding to the serving resources. Therefore, when a serving resource transitions to another resource, the UE can acquire measurement candidates for the serving resource of the transition destination from the associated second information. Therefore, when a serving resource transition occurs, the UE does not need to receive signaling about the set of measurement candidate resources in the serving resource of the transition destination, thereby reducing signaling overhead and waiting time for configuration update.

[0237] <<Aspect 2>> In aspect 1, an example in which one resource is configured as the first information has been described. However, the same measurement candidate resource may be associated with multiple resources (e.g., adjacent beams / RSs). In this case, associating the same measurement candidate resource with multiple resources can reduce signaling overhead and UE operation complexity.

[0238] Therefore, in Example 2, a case is illustrated in which the first information of association indicates a plurality of resources that can be serving resources (a plurality of serving resource candidates). The plurality of resources that can be serving resources may be, for example, a plurality of cell / beam / RS / TCI states, a group of cell / beam / RS / TCI states, or a set of cell / beam / RS / TCI states.

[0239] Fig. 12 is a diagram illustrating an example of association according to aspect 2. For example, in the example of Fig. 12, multiple SSBs in one PCI and multiple SSBs in each of multiple PCIs are shown as multiple resources of the first information. These multiple resources are associated with the common second information through the association.

[0240] <<<Variation 2-1>>> A variation of aspect 2 will be described. When multiple resources are associated with the same measurement candidate resource, at least one of the following constraints may or may not be applied to the multiple resources indicated in the first information of an entry: - The first information should include beams / RSs associated with the same PCI of the same frequency. - The first information should include beams / RSs related to the same PCI, but these may be at different frequencies. - The first information should include beams / RSs of the same type (e.g., SSB / CSI-RS / SRS). - The maximum number of resources in each piece of first information may be configured by RRC and is subject to UE capabilities.

[0241] In one example, by following the applied constraints, multiple resources can be appropriately associated with the same measurement candidate resource.

[0242] <<<Modification 2-2>>> The TCI state indicated as the first information may be, for example, at least one of a DL / joint TCI state and a UL TCI state.

[0243] As described above, according to aspect 2, by associating the same set of measurement candidate resources with a plurality of resources, it is possible to reduce signaling overhead and the complexity of UE operations.

[0244] <<Aspect 3>> In aspect 3, the set of measurement candidate resources indicated as the second information may be different for different purposes / scenarios (e.g., DL BM, UL BM, LTM, intra-cell, inter-cell, intra-frequency, RRM, L1 / L2 measurement / reporting, L3 measurement / reporting, etc.). Then, the second information corresponding to different purposes / scenarios in association may be separately indicated. A scenario may correspond to, for example, a series of procedures including the performance of resource measurements. For example, due to the occurrence of an event, the UE may perform a series of procedures in a scenario corresponding to the event, and the UE may perform resource measurements in the series of procedures.

[0245] The set of measurement candidate resources in the second information may be used for different purposes / scenarios. Therefore, the second information may be individually configured according to different purposes / scenarios. That is, in the association according to aspect 3, multiple pieces of second information for different purposes / scenarios may be associated with the first information. Each of the multiple pieces of second information may be configured for a specific purpose / scenario, or may be configured for multiple purposes / scenarios. For example, one piece of second information may be configured for multiple purposes / scenarios.

[0246] Therefore, in aspect 3, the association information may associate multiple resources, multiple scenarios, and multiple measurement candidate resources (multiple sets of measurement candidate resources). For example, assume that a certain resource is a serving resource and an event occurs on the serving resource. In this case, the UE may determine, in the association, a set of measurement candidate resources associated with the serving resource and a scenario corresponding to the occurred event.

[0247] FIG. 13 is a diagram illustrating an example of association according to aspect 3. In the association according to aspect 3, multiple pieces of second information corresponding to the purpose / scenario are associated with the first information. In the example of FIG. 13, the first information (SSB#3b, SSB#3c, ... of PCI#3) is individually associated with the second information for L1 beam measurement / reporting (SSB#2, SSB#4, ... of PCI#3, SSB#1, SSB#5, ... of PCI#4) and the second information for L3 RMM measurement / reporting (SSB#2, SSB#3, ... of PCI#3, SSB#1, SSB#2, ... of PCI#4). The multiple pieces of second information corresponding to the first information may be sets of measurement candidate resources, at least some of which differ depending on the purpose / scenario.

[0248] <<<Variation 3-1>>> When the association includes multiple pieces of second information depending on the purpose / scenario, different constraints may be applied to the set of measurement candidate resources indicated by the second information (a set of measurement candidate cells / beams / RSs) depending on the purpose / scenario. For example, at least one of the constraints listed below may or may not be applied to the second information depending on the purpose / scenario. - The set of measurement candidate resources indicated by the second information (e.g., a set of cells / beams / RSs) should be on the same frequency (e.g., the same frequency as that of the first information). - The set of measurement candidate resources indicated by the second information (e.g., a set of cells / beams / RSs) may be on different frequencies. - The set of measurement candidate resources indicated by the second information (e.g., a set of beams / RSs) should have the same type (e.g., SSB / CSI-RS / SRS).

[0249] Furthermore, if a different operation / purpose occurs, the UE may update only the second information (e.g., measurement candidate RSs) for the corresponding purpose. For example, suppose that the UE performs an L1 beam measurement / report after the serving resources are updated due to UE movement, channel fluctuation, or the like. In this case, the UE may identify first information corresponding to the updated serving resources from the association. Then, the UE obtains second information corresponding to the L1 beam measurement / report from among the multiple pieces of second information associated with the identified first information in the association. Then, the UE updates the measurement candidates in the L1 beam measurement / report (e.g., updates the measurement candidate RSs) using the set of measurement candidate resources indicated by the second information corresponding to the L1 beam measurement / report. In this case, the UE may not perform an update using second information other than the second information corresponding to the L1 beam measurement / report (e.g., second information for the L3 RMM measurement / report in FIG. 13 ). That is, the UE may not perform an update for measurement candidates corresponding to operations / purposes other than the operation / purpose that occurred.

[0250] Note that there may be cases where a specific purpose requires updating the set of measurement candidate resources for multiple purposes. In this case, the UE may perform the update using second information corresponding to each of the multiple purposes. For example, when LTM occurs, the UE may update not only the measurement candidate RSs for measurement / reporting of the L1 beam but also the measurement candidate RSs for LTM. In this case, the UE may obtain and use the second information for measurement / reporting of the L1 beam and the second information for measurement for LTM according to the respective purposes in the entry corresponding to the first information including the new serving resource.

[0251] <<<Modification 3-2>>> In the association according to aspect 3, the second information may include other configuration parameters for at least one of measurement and reporting in addition to the set of measurement candidate resources (e.g., a set of cells / beams / RSs). Alternatively, the other configuration parameters for at least one of measurement and reporting may be set separately from the second information. Furthermore, for example, the other configuration parameters for at least one of measurement and reporting may be set in common for multiple purposes / scenarios, or may be set in common for multiple entries of the association.

[0252] 13 illustrates an example in which multiple pieces of second information are associated with first information according to purposes / scenarios. However, the embodiment is not limited to this. For example, multiple associations may be set in the UE to indicate different associations between the first information and second information for different purposes / scenarios.

[0253] 14A and 14B are diagrams illustrating another example of associations according to aspect 3. Fig. 14A illustrates associations of first information and second information for L1 beam measurement / reporting. Fig. 14B illustrates associations of first information and second information for L3 RMM measurement / reporting. In this manner, multiple associations may be configured in a UE depending on purposes / scenarios.

[0254] As described above, according to Aspect 3, in addition to the effects of Aspect 1, the UE can determine an appropriate set of measurement candidate resources depending on the purpose / scenario. The UE may perform measurements on the determined set of measurement candidate resources (one or more measurement candidate resources). The UE may transmit the measurement results to the NW. The measurement results may include, for example, measurement results of at least a portion of one or more measurement candidate resources associated with the serving resource.

[0255] <Second Embodiment> In the first embodiment, an example is shown in which association is set for only one frequency resource. The second embodiment relates to application of the association according to the above-described embodiment in a scenario using multiple frequency resources (e.g., a multi-CC scenario). Note that the association according to the embodiment may be applied for a specific purpose (e.g., BM) in a scenario using multiple frequency resources. The frequency resource may be, for example, a component carrier (CC) / frequency / BWP, which may be interchangeable.

[0256] <<Option 1>> For a plurality of different frequency resources (CC / frequency / BWP), the association between the first information and the second information may be set individually for each frequency resource (CC / frequency / BWP).

[0257] 15 is a diagram illustrating an example of association according to the second embodiment. In the example of FIG. 15, an association between the first information and the second information is individually set for each frequency resource of a plurality of frequency resources. Note that the association may be, for example, any of the associations described in the above-mentioned aspects 1 to 3.

[0258] As described above, the association of the first information and the second information may be individually set for each frequency resource of the plurality of frequency resources. As a result, for example, when the serving resource of at least one frequency resource among the plurality of frequency resources is changed, the UE can appropriately determine a set of measurement candidate resources corresponding to the serving resource after the transition from the second information of the association corresponding to the frequency resource.

[0259] For example, in an Inter-F (inter-frequency) scenario, the number of cells per frequency and the number of RSs per cell may be different. For example, in an Inter-F (inter-frequency) scenario, the number of cells per frequency and the number of RSs per cell may be different in different frequency bands. Therefore, in an inter-frequency scenario, it may be preferable to set associations for each frequency resource individually. Option 1 may be applied to an inter-frequency scenario. Note that the inter-frequency scenario may be, for example, an inter-band scenario (where multiple CCs are in multiple bands).

[0260] <<Option 2>> When an association is configured for a certain frequency resource, the configuration of other frequency resources may follow the same association for each frequency resource for measurements of different purposes / scenarios on the corresponding frequency resource. For example, when an association is configured for a first frequency resource and the serving resource is changed on a second frequency resource, the UE may determine a set of measurement candidate resources on the second frequency resource based on the association of the first frequency resource.

[0261] Also, for example, when measurement candidate resources in a certain frequency resource (CC / frequency / BWP) are updated according to association, measurement candidate resources in other frequency resources (CC / frequency / BWP) may be updated assuming the same cell / RS ID.

[0262] Fig. 16 is a diagram showing another example of association according to the second embodiment. In the example of Fig. 16, an association is set for frequency resource 1 among a plurality of frequency resources. Note that the association may be, for example, any of the associations described in Aspects 1 to 3 above. Furthermore, no association may be set for frequency resource 2 and frequency resource 3. Note that, in another example, an association may be set for frequency resource 2 and frequency resource 3.

[0263] Then, for example, assume that a change in the serving resource occurs between frequency resource 2 and frequency resource 3. In this case, the UE may determine a set of measurement candidate resources corresponding to the serving resource between frequency resource 2 and frequency resource 3 according to the association of frequency resource 1.

[0264] 16 , frequency resource 1 may be, for example, a reference frequency resource set as a reference destination for association of other frequency resources, or may be a frequency resource for which association has been set. Frequency resource 1 may be set as a target frequency resource to be referenced for association of frequency resource 2 and frequency resource 3. In this case, for example, the UE may determine a set of measurement candidate resources for frequency resource 2 and frequency resource 3 according to the association of frequency resource 1.

[0265] As an example, it is assumed that the association shown in FIG. 11A is set for frequency resource 1. Furthermore, it is assumed that no association is set for frequency resource 2 and frequency resource 3. Note that frequency resource 1 may or may not be set as a reference for frequency resource 2 and frequency resource 3. In this case, as shown in FIG. 11B, it is assumed that a UE communicating using TCI state #3b in a cell of PCI #3 transitions to communication using frequency resource 2 in TCI state #0a of PCI #0 due to an update associated with movement. In other words, it is assumed that the serving resource transitions to the resource of frequency resource 2. In this case, the UE can also identify an entry in which the TCI state #0a of PCI #0 is set in the first information by, for example, referring to the association set for frequency resource 1 (e.g., FIG. 11A). The UE can then determine a set of measurement candidate resources (SSB#1, SSB#5, ..., SSB#8, SSB#9, ... of PCI#3) from the second information associated with the identified entry of the first information. The UE can then use the determined set of measurement candidate resources as a set of measurement candidate resources for frequency resources 1 to 3 (e.g., frequency resource 2).

[0266] Alternatively, a frequency resource list indicating a group of multiple frequency resources (e.g., CC / cell / BWP) may be set. Then, for example, an association may be set for the group of frequency resources included in the frequency resource list. Alternatively, an association may be set for at least one frequency resource included in the frequency resource list.

[0267] Then, for example, when a UE transitions to a serving resource using one frequency resource (e.g., #X) in the group due to UE movement or channel fluctuation, or the set of measurement candidate resources is updated on one frequency resource (e.g., #X) in the group according to an association (e.g., association with the group or one of associations of at least one frequency resource in the group), the UE may also update the measurement candidate resource sets of other frequency resources in the same frequency resource list as #X, assuming the same cell / RS ID (e.g., update to the same set of measurement candidate resources).

[0268] As described above, once an association is set for some frequency resources among a plurality of frequency resources, it can be applied to other frequency resources. Therefore, it is not necessary to set an association for each frequency resource. Therefore, it is possible to reduce the overhead of RRC signaling.

[0269] For example, in an Intra-F (inter-frequency) scenario, the cells per frequency may be the same, and the RSs per cell may be the same. Therefore, a configuration in which association is performed with some frequency resources among multiple frequency resources may be preferable in the intra-frequency scenario. Option 2 may be applied to the intra-frequency scenario. Note that the intra-frequency scenario may be, for example, an intra-band (multiple CCs in one band) scenario.

[0270] In the above-described embodiment, the beam may be, for example, SSB / CSI-RS / TRS / SRS / other reference RS. Also, the beam may be, for example, a DL TCI state / UL TCI state / joint TCI state.

[0271] In the above-described embodiment, the measurement values ​​obtained by the UE measuring the measurement candidate resources may be, for example, L1-RSRP / L1-SINR, or may be, for example, L1-RSRQ / L3-RSRP / L3-SINR / L3-RSRQ, or may be filtered measurements or enhanced L1 measurements.

[0272] <<Notification of Information to UE>> In the above-described embodiments, notification of any information to the UE [from a Network (NW) (e.g., a Base Station (BS))] (in other words, reception of any information from the BS by the UE) may be performed using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel (e.g., PDCCH, PDSCH, reference signal), or a combination thereof.

[0273] When the notification is performed by a MAC CE, the MAC CE may be identified by including a new Logical Channel ID (LCID) in the MAC subheader, which is not defined in existing standards.

[0274] When the notification is made by DCI, the notification may be made by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used to scramble Cyclic Redundancy Check (CRC) bits assigned to the DCI, the format of the DCI, etc.

[0275] Furthermore, notification of any information to the UE in the above embodiments may be performed periodically, semi-persistently, or aperiodically.

[0276] <<Notification of Information from UE>> In the above-described embodiments, notification of any information from the UE [to the NW] (in other words, transmission / report of any information from the UE to the BS) may be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel (e.g., PUCCH, PUSCH, PRACH, reference signal), or a combination thereof.

[0277] When the notification is performed by a MAC CE, the MAC CE may be identified by including a new LCID, which is not defined in existing standards, in the MAC subheader.

[0278] If the notification is made by UCI, the notification may be transmitted using PUCCH or PUSCH.

[0279] Furthermore, any information in the above-described embodiments may be notified from the UE periodically, semi-persistently, or aperiodically.

[0280] <<Regarding Application of Each Embodiment>> In a UE / BS, specific (one or more) processes / operations / controls / assumptions / information for at least one of the above-mentioned embodiments may be applied (used) when one or more of the following conditions are met: - a higher layer parameter indicating the specific processes / operations / controls / assumptions / information is configured; - the specific processes / operations / controls / assumptions / information is determined based on related higher layer parameters; - the specific processes / operations / controls / assumptions / information is specified / activated / triggered by a MAC CE / DCI / UCI / resource / channel / RS; - a specific UE capability indicating (or related to) the specific processes / operations / controls / assumptions / information is reported or supported; - the application of the specific processes / operations / controls / assumptions / information is determined based on specific conditions.

[0281] The specific UE capability may indicate at least one of the following: - Supporting the specific process / operation / control / assumption / information (e.g., determining measurement candidate resources based on association); - Supporting at least one of a super cell (e.g., a first cell) and a cell (e.g., a second cell); - Supporting numbers (e.g., the maximum number of resources (candidate serving resources) that can be serving resources configured for association, and the maximum number of measurement candidate resources in the set of measurement candidate resources).

[0282] For example, the maximum number of cells / beams / RS / TCI states in the first information may be according to the UE capability. For example, the UE may report the maximum number of cells / beams / RS / TCI states in the first information or information for determining the maximum number as the UE capability.

[0283] 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, a band, a band combination, a BWP, a 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).

[0284] Furthermore, the specific UE capability may be a capability that is applied to all duplexing methods (commonly regardless of the duplexing method), or may be a capability for each duplexing method (e.g., Time Division Duplex (TDD) or Frequency Division Duplex (FDD)).

[0285] If the above conditions are not met, the UE / BS may follow the behavior specified in existing 3GPP releases.

[0286] (Supplementary Notes) The following inventions are supplementary notes regarding one embodiment (e.g., the first embodiment) of the present disclosure. [Supplementary Note 1] A terminal including: a receiving unit that receives a configuration including associations between a plurality of resources and a plurality of measurement candidate resources; and a control unit that, when a resource of the plurality of resources enters a serving state, determines, based on the configuration, one or more measurement candidate resources from among the plurality of measurement candidate resources that are associated with the resource. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the configuration associates the same measurement candidate resource with a first resource and a second resource from the plurality of resources. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the configuration associates the plurality of resources, the plurality of measurement candidate resources, and a plurality of scenarios, and the control unit determines, from the plurality of measurement candidate resources, the one or more measurement candidate resources associated with the resource and a scenario. [Supplementary Note 4] The terminal according to any one of Supplementary Note 1 to Supplementary Note 3, wherein each resource of the plurality of resources is at least one of a cell, a beam, a reference signal, and a Transmission Configuration Indication (TCI) state, and each resource of the plurality of measurement candidate resources is at least one of a cell, a beam, and a reference signal.

[0287] (Supplementary Notes) The following inventions are supplementary notes regarding one embodiment (e.g., a second embodiment) of the present disclosure. [Supplementary Note 1] A terminal including: a receiving unit that receives a configuration including associations between a plurality of resources and a plurality of measurement candidate resources in a first frequency resource among a plurality of frequency resources; and a control unit that, when a resource among the plurality of resources enters a serving state, determines, based on the configuration, one or more measurement candidate resources among the plurality of measurement candidate resources that are associated with the resource. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein, when a resource in a second frequency resource among the plurality of frequency resources enters a serving state, the control unit determines, based on the configuration, one or more measurement candidate resources corresponding to the resource. [Supplementary Note 3] The terminal according to Supplementary Note 1, wherein the configuration includes association of a plurality of resources in a second frequency resource among the plurality of frequency resources with a plurality of measurement candidate resources, and wherein the control unit, when a certain resource in the second frequency resource enters a serving state, determines one or more measurement candidate resources associated with the certain resource among the plurality of measurement candidate resources in the second frequency resource based on the configuration. [Supplementary Note 4] The terminal according to any of Supplementary Notes 1 to 3, wherein the configuration associates the same measurement candidate resource with a first resource and a second resource among the plurality of resources.

[0288] (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.

[0289] 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) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0290] 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.

[0291] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (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.

[0292] 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 SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0293] 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 location, number, shape, size, etc. of each cell and user terminal 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 the base station 10.

[0294] The wireless communication system 1 may utilize multi-input multi-output (MIMO). For example, one cell may be formed by one antenna / base station 10, or may be formed by multiple antennas / base stations 10. One [virtual] cell (which may be called, for example, a supercell) may be composed of multiple [virtual] cells (which may be called, for example, subcells). A supercell may correspond to a cell with a fixed physical range, and a subcell may correspond to a cell with a quasi-static / dynamically variable physical range. In this case, the wireless communication system 1 may be called a cell-free system.

[0295] 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 (CCs) and dual connectivity (DC).

[0296] 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 higher than 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 correspond to a higher frequency band than FR2.

[0297] 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.

[0298] The multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with the Common Public Radio Interface (CPRI), an X2 / Xn interface, etc.) or wirelessly (e.g., 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.

[0299] 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.

[0300] The core network 30 may include network functions (Network Functions (NF)) 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 Operation, Administration and Maintenance (Management) (OAM). A single network node may provide multiple functions. Communication with an external network (e.g., the Internet) may also be performed via the DN.

[0301] The user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0302] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the wireless communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0303] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (e.g., other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0304] 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.

[0305] 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)), or the like may be used as an uplink channel.

[0306] The PDSCH transmits user data, higher layer control information, a System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit a Master Information Block (MIB).

[0307] 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.

[0308] 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 a UL grant, a UL DCI, etc. Note that the PDSCH may be replaced with DL data, and the PUSCH may be replaced with UL data.

[0309] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources for searching 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 the CORESET associated with a certain search space based on the search space configuration.

[0310] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the terms "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," "CORESET configuration," and the like in the present disclosure may be read interchangeably.

[0311] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation 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.

[0312] 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.

[0313] 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, as the DL-RS, 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.

[0314] 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 an SS (PSS, SSS) and a PBCH (and a 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 a reference signal.

[0315] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), or the like 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).

[0316] (Base Station) Fig. 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.

[0317] 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.

[0318] 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.

[0319] 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, control information, sequences, etc. to be transmitted as signals, 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.

[0320] 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.

[0321] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit. The transmitting unit may be configured from a transmission processing unit 1211 and an RF unit 122. The receiving unit may be configured from a reception processing unit 1212, the RF unit 122, and a measurement unit 123.

[0322] 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 relates, such as an array antenna.

[0323] 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.

[0324] The transceiver 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0325] The transmitter / receiver unit 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.

[0326] The transmitter / receiver unit 120 (transmission processing unit 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.

[0327] The transceiver unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 130.

[0328] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 130.

[0329] 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.

[0330] 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.

[0331] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes that provide NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0332] 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.

[0333] The base station 10 may be separated into three elements: a radio unit (RU), a distributed unit (DU), and a central unit (CU). For example, the RU may implement RF processing (digital beamforming, digital-to-analog conversion, analog beamforming, etc.) and lower-level functions of the physical layer (precoding, IFFT, FFT, etc.). The DU may implement higher-level functions of the physical layer (coding to resource element mapping, etc.), MAC layer functions, and RLC layer functions. The CU may implement the functions of the PDCP layer, Service Data Adaptation Protocol (SDAP) layer, and RRC layer.

[0334] In the present disclosure, the base station 10 may include a single device that realizes all of the functions of the RU, DU, and CU, or may include multiple devices that each realize some of the functions of the RU, DU, and CU and are connected to each other. In the present disclosure, the base station 10 may be interchangeably read as RU / DU / CU.

[0335] The transmitting / receiving unit 120 may transmit a configuration including associations between a plurality of resources and a plurality of measurement candidate resources.

[0336] When a resource among the multiple resources enters a serving state, the control unit 110 may control the reception of measurement results of one or more measurement candidate resources associated with a resource determined based on the settings from among the multiple measurement candidate resources.

[0337] Furthermore, the transceiver unit 120 may transmit a configuration including associations between a plurality of resources and a plurality of measurement candidate resources in a first frequency resource among the plurality of frequency resources.

[0338] When a resource among the multiple resources enters a serving state, the control unit 110 may control the reception of measurement results of one or more measurement candidate resources associated with a resource determined based on the settings from among the multiple measurement candidate resources.

[0339] (User Terminal) Fig. 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 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0340] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, 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.

[0341] 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, etc., which are described based on common understanding in the technical field to which the present disclosure relates.

[0342] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may 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.

[0343] 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 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.

[0344] 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.

[0345] The transmitting / receiving antenna 230 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0346] 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.

[0347] The transceiver unit 220 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0348] The transceiver unit 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.

[0349] The transmitter / receiver unit 220 (transmission processing unit 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.

[0350] 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 if not, it may not be necessary to perform DFT processing as the transmission processing.

[0351] The transceiver unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 230.

[0352] On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.

[0353] The transceiver unit 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, and acquire user data, etc.

[0354] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, 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.

[0355] The measurement unit 223 may derive channel measurements for CSI calculation based on the channel measurement resources. The channel measurement resources may be, for example, non-zero power (NZP) CSI-RS resources. The measurement unit 223 may also derive interference measurements for CSI calculation based on the interference measurement resources. The interference measurement resources may be at least one of an NZP CSI-RS resource for interference measurement, a CSI-Interference Measurement (IM) resource, etc. Note that CSI-IM may be referred to as CSI-Interference Management (IM) or may be interchangeably read as Zero Power (ZP) CSI-RS. Note that in the present disclosure, CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc. may be interchangeably read as interchangeable.

[0356] The transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving unit 220 and the transmitting / receiving antenna 230.

[0357] The transmitting / receiving unit 220 may receive a configuration including associations between a plurality of resources and a plurality of measurement candidate resources.

[0358] When a resource among the plurality of resources enters a serving state, the control unit 210 may determine, based on the configuration, one or more measurement candidate resources associated with the resource among the plurality of measurement candidate resources.

[0359] The control unit 210 may perform measurements on one or more measurement candidate resources associated with the resource. The control unit 210 may control transmission of the measurement results. The measurement results may include, for example, measurement results of at least a portion of the one or more measurement candidate resources. The transceiver unit 220 may transmit the measurement results.

[0360] The transceiver unit 220 may also receive a configuration including associations between a plurality of resources and a plurality of measurement candidate resources in a first frequency resource among the plurality of frequency resources.

[0361] When a resource among the plurality of resources enters a serving state, the control unit 210 may determine, based on the configuration, one or more measurement candidate resources associated with the resource among the plurality of measurement candidate resources.

[0362] (Hardware Configuration) Note that 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 be realized by combining software with the single device or the multiple devices.

[0363] 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 described above, the implementation method of each is not particularly limited.

[0364] For example, a base station, a user terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 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, etc.

[0365] In the present disclosure, the terms apparatus, circuit, device, section, unit, etc. may be used 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.

[0366] 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.

[0367] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading specified 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.

[0368] 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), transceiver unit 120 (220), etc. may be realized by the processor 1001.

[0369] 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 implemented by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be implemented in a similar manner.

[0370] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EEPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, cache, main memory, etc. The memory 1002 may store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.

[0371] Storage 1003 is a computer-readable recording medium and may be composed of 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, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

[0372] 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.

[0373] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0374] 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.

[0375] 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 this hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0376] In addition, the devices included in the core network 30 (for example, network nodes that provide NF) may also be realized by the above-mentioned functional block / hardware configuration.

[0377] (Modifications) Note that terms described 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.

[0378] 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.

[0379] 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, Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, specific filtering performed by a transceiver in the frequency domain, and specific windowing performed by a transceiver in the time domain.

[0380] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may also be a time unit based on numerology.

[0381] 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.

[0382] 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.

[0383] 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 the subframe and the 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.

[0384] 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. Note that the definition of TTI is not limited to this.

[0385] 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.

[0386] 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.

[0387] 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.

[0388] 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 greater than or equal to 1 ms.

[0389] 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 be determined based on numerology.

[0390] 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, each of which may be composed of one or more resource blocks.

[0391] In addition, one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0392] 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.

[0393] A Bandwidth Part (BWP), which may also be referred to as a partial 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 BWP and numbered within the BWP.

[0394] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0395] 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."

[0396] 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.

[0397] 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.

[0398] 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.

[0399] 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.

[0400] 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.

[0401] 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.

[0402] With respect to any information (e.g., variables, constants, parameters) described in the present disclosure, even if not specifically stated in the above embodiments, any first device (e.g., UE / base station) may notify any second device (e.g., base station / UE) of information indicating / specifying (or relating to) the value of the any information.

[0403] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the 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.

[0404] Note that the physical layer signaling may be referred to as 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 referred to as 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).

[0405] 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).

[0406] 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).

[0407] 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.

[0408] 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), these wired and / or wireless technologies are included within the definition of transmission media.

[0409] 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).

[0410] In this 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," "layer," "number of layers," "rank," "resource," "resource set," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," "UE panel," "transmitting entity," "receiving entity," etc. may be used interchangeably.

[0411] In the present disclosure, the term "antenna port" may be interchangeably read as an antenna port for any signal / channel (e.g., a demodulation reference signal (DMRS) port). In the present disclosure, the term "resource" may be interchangeably read as a resource for any signal / channel (e.g., a reference signal resource, an SRS resource, etc.). The resource may include time / frequency / code / space / power resources. Furthermore, the spatial domain transmission filter may include at least one of a spatial domain transmission filter and a spatial domain reception filter.

[0412] The group may include, for example, at least one of a spatial relationship group, a Code Division Multiplexing (CDM) group, a Reference Signal (RS) group, a Control Resource Set (CORESET) group, a PUCCH group, an antenna port group (e.g., a DMRS port group), a layer group, a resource group, a beam group, an antenna group, a panel group, and the like.

[0413] In addition, in the present disclosure, beam, SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, codeword (CW), transport block (TB), RS, etc. may be read as interchangeable terms.

[0414] In addition, in the present disclosure, the terms TCI state, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, joint TCI state, etc. may be read interchangeably.

[0415] Furthermore, in the present disclosure, terms such as "QCL," "QCL assumption," "QCL relationship," "QCL type information," "QCL property / properties," "specific QCL type (e.g., Type A, Type D) property," and "specific QCL type (e.g., Type A, Type D)" may be interchangeable.

[0416] In the present disclosure, terms such as index, identifier (ID), indicator, indication, and resource ID may be interchangeable. In the present disclosure, terms such as sequence, list, set, group, cluster, and subset may be interchangeable.

[0417] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and the spatial relationship information (TCI state) may be interchangeable. The "spatial relationship information (TCI state)" may be interchangeable with "set of spatial relationship information (TCI state)", "one or more pieces of spatial relationship information", etc. The TCI state and the TCI may be interchangeable. The spatial relationship information and the spatial relationship may be interchangeable.

[0418] In the present 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.

[0419] 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 partitioned 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 terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication service within that coverage.

[0420] 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.

[0421] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0422] 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.

[0423] 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.

[0424] 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.

[0425] 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.

[0426] 21 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, 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.

[0427] 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 a user.

[0428] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (for example, 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).

[0429] 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.

[0430] 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 (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0431] 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.

[0432] The driving assistance system unit 64 includes various devices for providing functions to prevent accidents and reduce 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.

[0433] 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.

[0434] 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 base station 10 or the user terminal 20 described above. Furthermore, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (or may function as at least one of the base station 10 and the user terminal 20).

[0435] 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.

[0436] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from an external device 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)).

[0437] 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.

[0438] 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 an uplink channel and a downlink channel may be read as a sidelink channel.

[0439] 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.

[0440] 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), a Serving-Gateway (S-GW), etc.), or a combination thereof.

[0441] 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 particular order presented.

[0442] 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 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802. The present invention may be applied to systems that use IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other suitable wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. Furthermore, the present invention may be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0443] 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."

[0444] 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.

[0445] 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.

[0446] 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.

[0447] Furthermore, "determination" may be considered to be "determining" resolving, selecting, choosing, establishing, comparing, etc. In other words, "determination" may be considered to be "determining" some kind of action. In the present disclosure, "determination" may be read interchangeably with the above-mentioned actions.

[0448] Furthermore, in this disclosure, "determine / determining" may be interchangeably read as "assume / assuming," "expect / expecting," "consider / considering," etc. Furthermore, in this disclosure, "does not expect to do..." may be interchangeably read as "assumes not to do...."

[0449] In the present disclosure, "expect" may be interchangeably read as "be expected." For example, "expect(s) ..." ("..." may be expressed, for example, as a that clause, a to-infinitive, etc.) may be interchangeably read as "be expected ..." or "do ... (if the above "..." is a to-infinitive, a verb with "to")," etc. "does not expect ..." may be interchangeably read as "be not expected ..." or "does not ... (if the above "..." is a to-infinitive, a verb with "to")," etc. Furthermore, "An apparatus A is not expected ..." may be interchangeably read as "an apparatus B other than apparatus A does not expect ... from apparatus A" (for example, if apparatus A is a UE, apparatus B may be a base station).

[0450] 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.

[0451] 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."

[0452] 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.

[0453] 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."

[0454] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0455] 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.

[0456] 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 "i-th" (i is an arbitrary integer) attached (for example, "highest" may be interchangeable with "i-th highest").

[0457] In this disclosure, the terms "of," "for," "regarding," "related to," "associated with," etc. may be read interchangeably.

[0458] In the present disclosure, terms such as "when A, B," "if A, (then) B," "B upon A," "B in response to A," "B based on A," "B during / while A," "B before A," "B at (the same time as) / on A," "B after A," "B since A," and "B until A" may be interchangeable. Note that A, B, and the like herein may be replaced with appropriate expressions such as nouns, gerunds, and regular sentences, depending on the context. Note that the time difference between A and B may be approximately zero (immediately after or immediately before). A time offset may also be applied to the time at which A occurs. For example, "A" may be interchangeable with "before / after a time offset at which A occurs." The time offset (eg, one or more symbols / slots) may be predefined or may be specified by the UE based on signaled information.

[0459] In the present disclosure, timing, time, duration, time instance, any time unit (e.g., slot, subslot, symbol, subframe), period, occasion, resource, etc. may be read interchangeably.

[0460] 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 description of the present disclosure is for illustrative purposes only and does not impose any limiting meaning on the invention according to the present disclosure.

Claims

1. A terminal including: a receiving unit that receives a configuration including associations between multiple resources and multiple measurement candidate resources in a first frequency resource among multiple frequency resources; and a control unit that, when a resource among the multiple resources enters a serving state, determines one or more measurement candidate resources associated with the resource among the multiple measurement candidate resources based on the configuration.

2. The terminal according to claim 1, wherein, when a certain resource in a second frequency resource among the plurality of frequency resources enters a serving state, the control unit determines one or more measurement candidate resources corresponding to the certain resource based on the setting.

3. The terminal according to claim 1, wherein the setting includes association of a plurality of resources in a second frequency resource among the plurality of frequency resources with a plurality of measurement candidate resources, and the control unit, when a certain resource in the second frequency resource enters a serving state, determines, based on the setting, one or more measurement candidate resources associated with the certain resource among the plurality of measurement candidate resources in the second frequency resource.

4. The terminal according to claim 1, wherein the setting associates the same measurement candidate resource with a first resource and a second resource of the plurality of resources.

5. A wireless communication method for a terminal, comprising: a step of receiving a configuration including associations between a plurality of resources and a plurality of measurement candidate resources in a first frequency resource among a plurality of frequency resources; and a step of determining, when a resource among the plurality of resources enters a serving state, one or more measurement candidate resources associated with the resource among the plurality of measurement candidate resources based on the configuration.

6. A base station including: a transmitting unit that transmits a configuration including associations between multiple resources and multiple measurement candidate resources in a first frequency resource among multiple frequency resources; and a control unit that, when a resource among the multiple resources enters a serving state, controls receiving measurement results of one or more measurement candidate resources associated with the resource determined based on the configuration from among the multiple measurement candidate resources.

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