Terminal, wireless communication method, base station, and system

Abstract

A terminal according to an aspect of the present disclosure is characterized by comprising: a reception unit which receives one or more first radio resource control (RRC) information elements relating to a list of TCI states including a plurality of transmission configuration indication (TCI) states applicable to a plurality of types of channels, and one or more second RRC information elements relating to the configuration of one or more serving cells or one or more bandwidth portions; and a control unit which when the first RRC information elements are not associated with a specific serving cell or a specific bandwidth portion, determines one or more TCI states to be used for the specific serving cell or the specific bandwidth portion, on the basis of the first RRC information elements and the second RRC information elements, wherein the reception unit receives a medium access control (MAC) control element indicating a serving cell or a bandwidth portion to be activated, among the one or more serving cells or the one or more bandwidth portions. According to one aspect of the present disclosure, it is possible to appropriately perform a TCI state instruction.

Description

Technical Field

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

Background Art

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

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

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a future wireless communication system (e.g., NR), a user terminal (terminal, user terminal, User Equipment (UE)) is considered to control transmission and reception processing based on information related to Quasi-Co-Location (QCL) (QCL assumption / Transmission Configuration Indication (TCI) state / spatial relationship).

[0006] Applying a set / activated / instructed TCI state to multiple types of signals (channels / RSs) has been considered. However, there are cases where the method of indicating the TCI state is not clear. If the method of indicating the TCI state is not clear, there is a risk of causing a deterioration in communication quality, a decrease in throughput, etc.

[0007] Therefore, one object of the present disclosure is to provide a terminal and a wireless communication method that appropriately perform TCI state indication 、 base station and the system as one of the purposes.

Means for Solving the Problems

[0008] A terminal according to one aspect of the present disclosure includes a receiving unit that receives Radio Resource Control (RRC) parameters related to a list of Transmission Configuration Indication (TCI) states including a plurality of TCI states applicable to a plurality of types of channels and signals applied to each of a plurality of serving cells or a plurality of Bandwidth Parts (BWPs), and based on the RRC parameters, for each of the plurality of serving cells or the plurality of BWPs to the channels and signals inIt has a control unit that determines the applicable TCI state, and when a reference signal of a first quasi-collocation (QCL) type unique to each of the plurality of serving cells or the plurality of BWPs is set, information related to the serving cell and information related to the BWP are not included in the setting information of the first QCL type and the setting information of the second QCL type included in each of the plurality of TCI states.

Effect of the Invention

[0009] According to one aspect of the present disclosure, TCI state indication can be appropriately performed.

Brief Description of the Drawings

[0010]

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[0011] (TCI, Spatial Relationship, QCL) In NR, it is considered to control at least one of signal and channel (expressed as signal / channel) in a UE, such as reception processing (e.g., at least one of reception, demapping, demodulation, decoding), transmission processing (e.g., at least one of transmission, mapping, precoding, modulation, encoding) based on a Transmission Configuration Indication state (TCI state).

[0012] The TCI state may represent what is applied to the downlink signal / channel. What corresponds to the TCI state applied to the uplink signal / channel may be expressed as a spatial relation.

[0013] The TCI state is information regarding the Quasi-Co-Location (QCL) of a signal / channel, and may be referred to as a spatial reception parameter, Spatial Relation Information, etc. The TCI state may be set for each UE for each channel or for each signal.

[0014] QCL is an indicator showing the statistical properties of a signal / channel. For example, when a certain signal / channel and another signal / channel are in a QCL relationship, it may be meant that at least one of Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (for example, spatial Rx parameter) is the same (QCL for at least one of these) among these different multiple signals / channels.

[0015] Note that the spatial reception parameter may correspond to the reception beam of the UE (for example, the reception analog beam), and the beam may be specified based on spatial QCL. The QCL (or at least one element of QCL) in the present disclosure may be read as sQCL (spatial QCL).

[0016] Multiple types (QCL types) of QCL may be defined. For example, four QCL types A - D may be provided in which the parameters (or parameter sets) that can be assumed to be the same are different, and the parameters (which may also be referred to as QCL parameters) are shown below: · QCL type A (QCL-A): Doppler shift, Doppler spread, average delay, and delay spread, · QCL type B (QCL-B): Doppler shift and Doppler spread, · QCL type C (QCL-C): Doppler shift and average delay, · QCL type D (QCL-D): Spatial reception parameters.

[0017] The assumption by a UE that a certain control resource set (Control Resource Set (CORESET)), channel, or reference signal is in relation to another CORESET, channel, or reference signal with a specific QCL (e.g., QCL type D) may be referred to as a QCL assumption.

[0018] The UE may determine at least one of the transmission beam (Tx beam) and the reception beam (Rx beam) of the signal / channel based on the TCI state or QCL assumption of the signal / channel.

[0019] The TCI state may be, for example, information regarding the QCL between a target channel (in other words, the reference signal (Reference Signal (RS)) for the channel) and another signal (e.g., another RS). The TCI state may be set (indicated) by higher layer signaling, physical layer signaling, or a combination thereof.

[0020] The physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI)).

[0021] The channel for which the TCI state or spatial relation 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)).

[0022] Also, the RS having a QCL relation with the channel may be, for example, at least one of a synchronization signal block (Synchronization Signal Block (SSB)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a sounding reference signal (Sounding Reference Signal (SRS)), a CSI-RS for tracking (also called Tracking Reference Signal (TRS)), and a reference signal for QCL detection (also called QRS).

[0023] The SSB is a signal block including at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)), a secondary synchronization signal (Secondary Synchronization Signal (SSS)), and a physical broadcast channel (Physical Broadcast Channel (PBCH)). The SSB may be called an SS / PBCH block.

[0024] The RS of QCL type X in the TCI state may mean an RS having a relation of QCL type X with a certain channel / signal (DMRS thereof), and this RS may also be called the QCL source of QCL type X in the TCI state.

[0025] For PDCCH and PDSCH, QCL type A RS must be configured, and QCL type D RS may be additionally configured. Since it is difficult to estimate Doppler shift, delay, etc. by one-shot reception of DMRS, QCL type A RS is used to improve channel estimation accuracy. QCL type D RS is used for reception beam determination during DMRS reception.

[0026] For example, TRS1-1, 1-2, 1-3, 1-4 are transmitted, and TRS1-1 is notified as QCL type C / D RS according to the TCI state of PDSCH. By notifying the TCI state, the UE can utilize the information obtained from the results of past periodic reception / measurement of TRS1-1 for reception / channel estimation of PDSCH DMRS. In this case, the QCL source of PDSCH is TRS1-1, and the QCL target is PDSCH DMRS.

[0027] (Multi-TRP) In NR, it is being considered that one or more transmission / reception points (TRPs) (multi-TRP (MTRP)) perform DL transmission to the UE using one or more panels (multi-panel). Also, it is being considered that the UE performs UL transmission to one or more TRPs using one or more panels.

[0028] Note that multiple TRPs may correspond to the same cell identifier (cell ID), or may correspond to different cell IDs. The cell ID may be a physical cell ID or a virtual cell ID.

[0029] Multi-TRP (e.g., TRP#1, #2) is connected by an ideal / non-ideal backhaul, and information, data, etc. may be exchanged. Different code words (Code Word (CW)) and different layers may be transmitted from each TRP of the multi-TRP. As a form of multi-TRP transmission, Non-Coherent Joint Transmission (NCJT) may be used.

[0030] In NCJT, for example, TRP#1 modulates and maps the first code word, layer-maps it, and transmits the first number of layers (e.g., 2 layers) of the first PDSCH using the first precoding. Also, TRP#2 modulates and maps the second code word, layer-maps it, and transmits the second number of layers (e.g., 2 layers) of the second PDSCH using the second precoding.

[0031] Note that multiple PDSCHs (multi-PDSCH) subject to NCJT may be defined to partially or completely overlap in at least one of the time and frequency domains. That is, the first PDSCH from the first TRP and the second PDSCH from the second TRP may overlap in at least one of the time and frequency resources.

[0032] These first PDSCH and second PDSCH may be assumed to be not quasi-co-located. The reception of the multi-PDSCH may be reinterpreted as the simultaneous reception of PDSCHs that are not of a certain QCL type (e.g., QCL type D).

[0033] Multiple PDSCHs from multiple TRPs (which may be referred to as multiple PDSCH) may be scheduled using one DCI (single DCI, single PDCCH) (single master mode, single-DCI based multi-TRP). Multiple PDSCHs from multiple TRPs may be scheduled respectively using multiple DCIs (multiple PDCCH) (multi-master mode, multi-DCI based multi-TRP).

[0034] In URLLC for multi-TRP, it is being considered to support PDSCH (transport block (TB) or codeword (CW)) repetition across multi-TRP. It is being considered to support repetition schemes (URLLC schemes, e.g., scheme 1, 2a, 2b, 3, 4) across multi-TRP in the frequency domain or layer (spatial) domain or time domain. In scheme 1, multi-PDSCH from multi-TRP is space division multiplexing (SDM). In schemes 2a, 2b, PDSCH from multi-TRP is frequency division multiplexing (FDM). In scheme 2a, the redundancy version (RV) for multi-TRP is the same. In scheme 2b, the RV for multi-TRP may be the same or different. In schemes 3, 4, multi-PDSCH from multi-TRP is time division multiplexing (TDM). In scheme 3, multi-PDSCH from multi-TRP is transmitted within one slot. In scheme 4, multi-PDSCH from multi-TRP is transmitted in different slots.

[0035] According to such a multi-TRP scenario, more flexible transmission control using high-quality channels is possible.

[0036] In order to support intra-cell (within the same cell, having the same cell ID) and inter-cell (between different cells, having different cell IDs) multi-TRP transmissions based on multiple PDCCHs, in the RRC configuration information for linking multiple pairs of PDCCH and PDSCH having multiple TRPs, one control resource set (CORESET) within the PDCCH configuration information (PDCCH-Config) may correspond to one TRP.

[0037] If at least one of the following Conditions 1 and 2 is satisfied, the UE may determine that it is a multi-TRP based on multi-DCI. In this case, the TRP may be re-read as the CORESET pool index. [Condition 1] One CORESET pool index is set. [Condition 2] Two different values (for example, 0 and 1) of the CORESET pool index are set.

[0038] If the following condition is satisfied, the UE may determine that it is a multi-TRP based on single-DCI. In this case, the two TRPs may be re-read as two TCI states indicated by MAC CE / DCI. [Condition] "Enhanced TCI States Activation / Deactivation for UE-specific PDSCH MAC CE" is used to indicate one or two TCI states for one code point of the TCI field in DCI.

[0039] The DCI for common beam indication may be a UE-specific DCI format (e.g., DL DCI format (e.g., 1_1, 1_2), UL DCI format (e.g., 0_1, 0_2)), or a UE-group common DCI format.

[0040] (Simultaneous beam update for multiple CCs) In Rel.16, one MAC CE can update the beam indexes (TCI states) of multiple CCs.

[0041] The UE can be configured by RRC with up to two applicable CC lists (e.g., applicable-CC-list). When two applicable CC lists are configured, the two applicable CC lists may respectively correspond to intra-band CA in FR1 and intra-band CA in FR2.

[0042] The MAC CE for activating the TCI state of PDCCH activates the TCI states associated with the same CORESET ID on all BWPs / CCs within the applicable CC list.

[0043] The MAC CE for activating the TCI state of PDSCH activates the TCI states on all BWPs / CCs within the applicable CC list.

[0044] The MAC CE for activating the spatial relation of A-SRS / SP-SRS activates the spatial relations associated with the same SRS resource ID on all BWPs / CCs within the applicable CC list.

[0045] In the example of FIG. 1, the UE is configured with an applicable CC list indicating CC#0, #1, #2, #3, and a list indicating 64 TCI states for the CORESET or PDSCH of each CC. When one TCI state of CC#0 is activated by a MAC CE, the corresponding TCI states are activated in CC#1, #2, and #3.

[0046] It is being considered that such simultaneous beam updates are applicable only to the single TRP case.

[0047] For PDSCH, the UE may be based on the following procedure A. [Procedure A] The UE receives an activation command for mapping up to 8 TCI states to the code points of the DCI field (TCI field) within one CC / DL BWP or within one set of CC / BWPs. When one set of TCI state IDs is activated for one set of CC / DL BWPs, there, the applicable list of CCs is determined by the CC indicated in the activation command, and the same set of TCI states is applied to all DL BWPs within the indicated CC. Only if the UE is not provided with different values of the CORESET pool index (CORESETPoolIndex) within the CORESET information element (ControlResourceSet) and is not provided with at least one TCI code point mapped to two TCI states, can one set of TCI state IDs be activated for one set of CC / DL BWPs.

[0048] For PDCCH, the UE may be based on the following procedure B. [Procedure B] If the UE provides a list of up to two cells for simultaneous TCI state activation by means of the simultaneous TCI update list (at least one of simultaneousTCI-UpdateList-r16 and simultaneousTCI-UpdateListSecond-r16) in the simultaneous TCI cell list (simultaneousTCI-CellList), the UE shall apply the antenna port quasi co-location (QCL) provided by the TCI state having the same activated TCI state ID value to all configured DL BWPs of all configured cells within one list determined from the serving cell index provided by the MAC CE command, for the CORESET having index p. The simultaneous TCI cell list can be provided for simultaneous TCI state activation only if the UE does not provide different values of the CORESET pool index (CORESETPoolIndex) within the CORESET information element (ControlResourceSet) and does not provide at least one TCI code point mapped to two TCI states.

[0049] For semi-persistent (SP) / aperiodic (AP)-SRS, the UE may be based on the following procedure C. [Procedure C] For a set of CC / BWP, when the spatial relation information (spatialRelationInfo) for the SP or AP-SRS resource set by the SRS resource information element (higher layer parameter SRS-Resource) is activated / updated by the MAC CE, where the applicable list of CCs is indicated by the simultaneous spatial update list (higher layer parameter simultaneousSpatial-UpdateList-r16 or simultaneousSpatial-UpdateListSecond-r16), for the SP or AP-SRS resources with the same SRS resource ID in all BWPs within the indicated CC, the spatial relation information is applied. Only if the UE does not provide multiple different values of the CORESET pool index (CORESETPoolIndex) within the CORESET information element (ControlResourceSet) and does not provide at least one TCI code point mapped to two TCI states, for a set of CC / BWP, the spatial relation information (spatialRelationInfo) for the SP or AP-SRS resource set by the SRS resource information element (higher layer parameter SRS-Resource) is activated / updated by the MAC CE.

[0050] The simultaneous TCI cell list (simultaneousTCI-CellList), the simultaneous TCI update list (at least one of simultaneousTCI-UpdateList1-r16 and simultaneousTCI-UpdateList2-r16) is a list of serving cells for which the TCI relationship can be updated simultaneously using the MAC CE. simultaneousTCI-UpdateList1-r16 and simultaneousTCI-UpdateList2-r16 do not contain the same serving cell.

[0051] The simultaneous spatial update list (at least one of the upper layer parameters simultaneousSpatial-UpdatedList1-r16 and simultaneousSpatial-UpdatedList2-r16) is a list of serving cells whose spatial relationships can be updated simultaneously using a MAC CE. simultaneousSpatial-UpdatedList1-r16 and simultaneousSpatial-UpdatedList2-r16 do not contain the same serving cells.

[0052] Here, the simultaneous TCI update list and the simultaneous spatial update list are configured by RRC, the CORESET pool index of the CORESET is configured by RRC, and the TCI code point mapped to the TCI state is indicated by a MAC CE.

[0053] (Unified / Common TCI Framework) According to the unified TCI framework, the UL and DL channels can be controlled by a common framework. Instead of defining the TCI state or spatial relationship for each channel as in Rel.15, the unified TCI framework may indicate a common beam (common TCI state) and apply it to all UL and DL channels, or apply the common beam for UL to all UL channels and the common beam for DL to all DL channels.

[0054] One common beam for both DL and UL, or a common beam for DL and a common beam for UL (two common beams in total) are being considered.

[0055] The UE may assume the same TCI state (joint TCI state, joint TCI pool, joint common TCI pool, joint TCI state set) for both UL and DL. The UE may assume different TCI states (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) for each of UL and DL.

[0056] Based on beam management based on MAC CE (MAC CE level beam indication), the default beams for UL and DL may be aligned. The default TCI state of the PDSCH may be updated to match the default UL beam (spatial relationship).

[0057] Based on beam management based on DCI (DCI level beam indication), a common beam / unified TCI state may be indicated from the same TCI pool (joint common TCI pool, joint TCI pool, set) for both UL and DL. X (>1) TCI states may be activated by MAC CE. The UL / DL DCI may select one from the X active TCI states. The selected TCI state may be applied to both UL and DL channels / RSs.

[0058] The TCI pool (set) may be a plurality of TCI states set by RRC parameters, or among the plurality of TCI states set by RRC parameters, a plurality of TCI states (active TCI states, active TCI pool, set) activated by MAC CE. Each TCI state may be a QCL type A / D RS. An SSB, CSI-RS, or SRS may be set as the QCL type A / D RS.

[0059] The number of TCI states corresponding to each of the TRPs of 1 or more may be defined. For example, the number N (≧1) of TCI states (UL TCI states) applied to the UL channel / RS and the number M (≧1) of TCI states (DL TCI states) applied to the DL channel / RS may be defined. At least one of N and M may be notified / set / instructed to the UE via upper layer signaling / physical layer signaling.

[0060] In the present disclosure, when it is described that N = M = X (X is an arbitrary integer), it may mean that X (joint TCI states common to UL and DL corresponding to X TRPs) are notified / set / instructed to the UE. Also, when it is described that N = X (X is an arbitrary integer) and M = Y (Y is an arbitrary integer, Y may be equal to X), it may mean that X UL TCI states corresponding to X TRPs and Y DL TCI states corresponding to Y TRPs (i.e., separate TCI states) are respectively notified / set / instructed to the UE.

[0061] For example, when it is described that N = M = 1, it may mean that one TCI state common to one UL and DL for a single TRP is notified / set / instructed to the UE (joint TCI state for a single TRP).

[0062] Also, for example, when it is described that N = 1 and M = 1, it may mean that one UL TCI state and one DL TCI state for a single TRP are separately notified / set / instructed to the UE (separate TCI states for a single TRP).

[0063] Also, for example, when it is described that N = M = 2, it may mean that a plurality of (two) TCI states common to a plurality of (two) ULs and DLs for a plurality of (two) TRPs are notified / set / instructed to the UE (joint TCI states for a plurality of TRPs).

[0064] Also, for example, when N = 2 and M = 2 are described, it may mean that for the UE, a plurality (two) of UL TCI states and a plurality (two) of DL TCI states for a plurality (two) of TRPs are notified / set / instructed (separate TCI states for multiple TRPs).

[0065] In the above example, cases where the values of N and M are 1 or 2 are described, but the values of N and M may be 3 or more, and N and M may be different.

[0066] In the example of FIG. 2A, the RRC parameter (information element) sets a plurality of TCI states for both DL and UL. The MAC CE may activate a plurality of TCI states among the set plurality of TCI states. The DCI may indicate one of the activated plurality of TCI states. The DCI may be UL / DL DCI. The indicated TCI state may be applied to at least one (or all) of the UL / DL channels / RSs. One DCI may indicate both UL TCI and DL TCI.

[0067] In the example of FIG. 2A, one point may be one TCI state applied to both UL and DL, or two TCI states applied to UL and DL respectively.

[0068] At least one of the plurality of TCI states set by the RRC parameter and the plurality of TCI states activated by the MAC CE may be called a TCI pool (common TCI pool, joint TCI pool, TCI state pool). The plurality of TCI states activated by the MAC CE may be called an active TCI pool (active common TCI pool).

[0069] In the present disclosure, the upper layer parameters (RRC parameters) for setting a plurality of TCI states may be referred to simply as "configuration information", which is configuration information for setting a plurality of TCI states. Further, in the present disclosure, being instructed to select one of a plurality of TCI states using DCI may mean receiving instruction information for instructing one of a plurality of TCI states included in the DCI, or may simply mean receiving "instruction information".

[0070] In the example of FIG. 2B, the RRC parameters set a plurality of TCI states (joint common TCI pool) for both DL and UL. The MAC CE may activate a plurality of TCI states (active TCI pool) among the set plurality of TCI states. Separate active TCI pools for each of UL and DL may be set / activated.

[0071] The DL DCI, or a new DCI format, may select (instruct) one or more (e.g., one) TCI states. The selected TCI state may be applied to one or more (or all) DL channels / RSs. The DL channel may be PDCCH / PDSCH / CSI-RS. The UE may determine the TCI state of each DL channel / RS using the Rel.16 TCI state operation (TCI framework). The UL DCI, or a new DCI format, may select (instruct) one or more (e.g., one) TCI states. The selected TCI state may be applied to one or more (or all) UL channels / RSs. The UL channel may be PUSCH / SRS / PUCCH. Thus, different DCIs may separately instruct UL TCI and DL DCI.

[0072] The existing DCI formats 1_1 / 1_2 may be used for instructing a common TCI state.

[0073] The common TCI framework may have separate TCI states for DL and UL.

[0074] (Unified TCI Framework in Carrier Aggregation (CA)) In NR after Rel.17, it is being considered to introduce a unified TCI state framework in CA. The common TCI state indicated to the UE is expected to be common among CCs (cells) (at least QCL type D among CCs). This is because the simultaneous reception of different DL channels / RSs of QCL type D and the simultaneous transmission of UL channels / RSs with different spatial relationships are not supported by the existing specifications (Rel.15 / 16) except for cases such as transmission and reception using multiple TRPs.

[0075] Also, in the unified TCI framework, the update / activation of the common TCI state ID is being considered to provide common QCL information / common UL transmission spatial filters across a set of configured multiple CCs.

[0076] The following Options 1 and 2 are being considered as TCI state pools for CA.

[0077] [Option 1] A single TCI state pool configured by RRC may be shared (configured) for a set of configured multiple CCs (cells) / BWPs. For example, a cell group TCI state may be defined, or the TCI state pool for PDSCH in the reference cell may be reused. In the TCI state, there is no CC (cell) ID for QCL type A RS, and the CC (cell) ID for QCL type A RS may be determined according to the target CC (cell) of the TCI state.

[0078] In Option 1, since a common TCI state pool is configured for each of the multiple CCs / BWPs, when one common TCI state is indicated by MAC CE / DCI, the indicated common TCI state may be applied to all CCs / BWPs (all CCs / BWPs included in a pre-configured CC / BWP list).

[0079] [Option 2] For each individual CC, a TCI state pool may be configured by RRC.

[0080] In Option 2, similar to Rel.16, a list of CCs / BWPs for applying simultaneous beam updates is pre-configured by RRC. When beam updates are performed by MAC CE / DCI in any of the CCs / BWPs included in the CC / BWP list, the updates may be applied to all CCs / BWPs.

[0081] In Option 1, a common TCI state pool is configured (shared) by RRC for multiple CCs. The TCI states within the common TCI state pool are indicated by common TCI state IDs, and one RS determined based on the TCI state is used to indicate QCL type D across the set of configured multiple CCs (Constraint 1).

[0082] In Option 2, an individual common TCI state pool is configured by RRC for each CC. The TCI states within the common state pool are indicated by common TCI state IDs, and one RS determined based on the TCI state is used to indicate QCL type D across the set of configured multiple CCs (Constraint 2).

[0083] (Constraints on QCL configuration) As described above, it has been considered to control the beams of multiple types of channels by a common beam indication / activation (MAC CE / DCI) using the common TCI framework, but this control is performed for one CC (cell).

[0084] The simultaneous beam update across multiple CCs standardized in Rel.16 can update the beams of multiple BWPs / CCs with one MAC CE beam indication, thus reducing the overhead of beam control.

[0085] In Rel.15 / 16, the QCL source RSs (Type A RS and Type D RS) configured in the TCI state of DMRS for PDCCH / DMRS for PDSCH (which may be simply referred to as DMRS in this disclosure) are limited to the following cases (Case 1)-(Case 3): (Case 1) The Type A RS is a tracking reference signal (TRS) (CSI-RS for which the upper layer parameter trs-Info is configured), and the Type D RS is the same CSI-RS as the Type A RS. (Case 2) The Type A RS is a TRS, and the Type D RS is a CSI-RS for which the upper layer parameter repetition is configured. (Case 3) The Type A RS is a CSI-RS for which neither the upper layer parameter trs-Info nor the upper layer parameter repetition is configured, and the Type D RS is the same CSI-RS as the Type A RS.

[0086] Therefore, the only case where the Type A RS and the Type D RS are different CSI-RS resources is the above (Case 2).

[0087] Also, the CSI-RS for which the upper layer parameter repetition is configured can be configured to assist the UE's reception beam determination. However, the UE's reception beam determination can be performed without using the CSI-RS for which the upper layer parameter repetition is configured.

[0088] On the other hand, since the network (NW, e.g., base station) transmits a TRS as the Type A RS, the operation of the above (Case 1) where it is used as the Type D RS is considered common.

[0089] In the common TCI framework, it is also preferable to enable simultaneous beam updates across multiple CCs. However, there are the following constraints on the QCL configuration between DMRS for PDCCH / DMRS for PDSCH and TRS in multiple CCs.

[0090] For example, the settings as shown in FIG. 3 are possible. Assume that CC#0 which is a special cell (SpCell) (primary cell (PCell) or primary secondary cell (PSCell)), and #1, #2, and #3 which are SCell are set, and SSB, TRS, DMRS for PDCCH / DMRS for PDSCH (which may be simply referred to as DMRS) are transmitted in each CC. In this case, the TRS of each CC has a QCL type C and D relationship with the SSB of CC#0, and the PDCCH of each CC has a QCL type A and D relationship with the TRS of the same CC.

[0091] For example, the settings as shown in FIG. 4 are impossible. Similar to FIG. 3 described above, when the TRS of each CC has a QCL type C and D relationship with the SSB of CC#0, and the DMRS of each CC has a QCL type A relationship with the TRS of the same CC, the DMRS of CC#1, 2, and 3 cannot have a QCL type D relationship with the TRS of CC#0 (described by the dashed line). When the TCI state of the DMRS for PDCCH / DMRS for PDSCH is the TRS, the RS of QCL type A and the RS of QCL type D need to be the same TRS.

[0092] When the TRS is set as the QCL type A / D RS in the TCI state of a certain CC, the TRS of another CC cannot be set as the QCL type A / D RS. Therefore, even when setting / updating / indicating a common TCI pool or common TCI among multiple CCs, the setting of the TCI state (the TCI state including the QCL type A / D RS) is performed for each CC.

[0093] When CSI-RS is configured as QCL type D RS in the TCI state of a certain CC, it may be possible to configure CSI-RS of another CC as QCL type D RS in the TCI state of PDCCH / PDSCH of a certain CC. Even in this case, it is necessary to configure CSI-RS / TRS of the same CC as QCL type A RS. This is because the QCL type A RS indicates that the parameters determining channel identification, such as delay spread and average delay, are the same. In different CCs, the values of these parameters may be different.

[0094] The cell of the QCL type A RS needs to be the same as the cell of the DMRS for PDSCH / PDCCH with the TCI state configured.

[0095] As described above, when the QCL type D RS is a TRS, the QCL type D RS needs to be the same as the QCL type A RS. Combining with the above description, when the QCL type D RS is a TRS, the cell of the QCL type D RS needs to be the same as the cell of the DMRS for PDSCH / PDCCH with the TCI state configured.

[0096] When the QCL type D RS is a CSI-RS with repetitions configured (having CSI-RS resources within the NZP CSI-RS resource set with the higher layer parameter repetition configured (the higher layer parameter repetition is ON)), the cell of the QCL type D RS may be different from the cell of the DMRS for PDSCH / PDCCH with the TCI state configured.

[0097] (MAC CE) In Rel.16, MAC CE (TCI States Activation / Deactivation for UE-specific PDSCH MAC CE) is used for the activation / deactivation of the TCI state of UE-specific PDSCH (see Figure 5).

[0098] The MAC CE is identified by a MAC subheader with a Logical Channel ID (LCID).

[0099] The MAC CE may be used in an environment using a single TRP or multi-TRP based on multi-DCI.

[0100] The MAC CE may include a Serving Cell ID field, a BWP ID field, a field (T i ) for indicating the activation / deactivation of the TCI state, and a CORESET Pool ID field.

[0101] The Serving Cell ID field may be a field for indicating the serving cell to which the MAC CE is applied. The BWP ID field may be a field for indicating the DL BWP to which the MAC CE is applied. The CORESET Pool ID field may be a field indicating that the correspondence (mapping) between the activated TCI state and the code point of the TCI field (DCI TCI code point) indicated by the DCI set in field T i is specific to the ControlResourceSetId set by the CORESET Pool ID.

[0102] Also, in Rel.16, for the activation / deactivation of the TCI state of the UE-specific PDSCH, a MAC CE (Enhanced TCI States Activation / Deactivation for UE-specific PDSCH MAC CE) is used (see Figure 6).

[0103] The MAC CE is identified by a MAC PDU sub-header with an eLCID.

[0104] The MAC CE may be used in an environment that uses multi-TRP based on a single DCI.

[0105] The MAC CE may include a Serving Cell ID field, a BWP ID field, a field for indicating the TCI state identified by the TCI-StateID (TCI state ID i,j (i is an integer from 0 to N, j is 1 or 2)), a field (C i,2 ) indicating whether the TCI state ID exists in the corresponding octet, and a reserved bit field (R, set to 0). i

[0106] "i" may correspond to the index of the code point of the TCI field indicated by the DCI. "TCI state ID i,j " may indicate the j-th TCI state of the code point of the i-th TCI state field.

[0107] Also, in Rel.16, for the activation / deactivation of the TCI state of the UE-specific PDCCH / CORESET, a MAC CE (TCI State Indication for UE-specific PDCCH MAC CE) is used (see Figure 7).

[0108] The MAC CE is identified by a MAC sub-header having an LCID.

[0109] The MAC CE may include a serving cell ID field, a field indicating a CORESET (CORESET ID) instructed with a TCI state, and a field (TCI state ID) for indicating a TCI state applicable to a CORESET identified by the CORESET ID.

[0110] (Analysis) By the way, in the unified TCI state framework for CA after Rel.17, it is being considered that the QCL type D RS is the RS of the target CC (cell) or other CC (cells).

[0111] In the present disclosure, the target CC / cell may mean a CC / cell to which a TCI state (for example, the TCI state of DMRS for PDSCH / PDCCH) is applied.

[0112] In the unified TCI state framework for CA after Rel.17, it is being considered that the rules of QCL defined in Rel.15 are reused.

[0113] More specifically, in the unified TCI state framework for CA after Rel.17, the QCL type D RS may be the RS of the target CC (cell) or other indicated CC (cells).

[0114] Also, a CC common QCL type D RS and a CC specific QCL type D RS may be configurable. When the CC specific QCL type D RS is set, the QCL type D RS of each CC may be related to the CC common QCL type D RS. This may mean that the CC common SSB is set as the QCL type D RS.

[0115] Also, a set of multiple CCs / BWPs may be configured, such as the simultaneous beam update of multiple CCs defined in Rel. 16. The set of multiple CCs / BWPs may be referred to as a CC list, a BWP list, or a CC / BWP list.

[0116] Also, in the unified TCI state framework for CA after Rel. 17, it is being considered that cases 1 to 3 of the QCL constraints as described above are allowed.

[0117] Furthermore, for the RRC-configured TCI state pool(s) after Rel. 17, it is being considered that it is configured for each BWP / CC or for multiple BWP / CCs (in units of multiple BWP / CCs).

[0118] In the case where the RRC-configured TCI state pool is configured for each BWP / CC, similar to Rel. 15, the RRC-configured TCI state pool may be configured within the PDSCH configuration (RRC information element "PDSCH-Config") of each BWP / CC.

[0119] In the case where the RRC-configured TCI state pool is configured for multiple BWP / CCs (in units), the RRC-configured TCI state pool may not be present (may be absent) within the PDSCH configuration (RRC information element "PDSCH-Config") of each BWP / CC, and the RRC-configured TCI state pool may be configured by referring to the RRC-configured TCI state pool in a certain reference BWP / CC.

[0120] For example, when configuring the RRC-configured TCI state pool in units of two CCs, CC#1 and CC#2, it is conceivable to set the TCI state in the PDSCH configuration of CC#1 and not set the TCI state in the PDSCH configuration of CC#2. The reference CC in this case is CC#1.

[0121] However, regarding the specific method for setting the TCI state and the method for notifying a set of multiple BWPs / CCs in the unified TCI state framework, the consideration is not sufficient. If this consideration is not sufficient, the TCI state cannot be appropriately indicated, and there is a risk of deterioration in communication quality, throughput, etc.

[0122] Therefore, the inventors of the present invention conceived of a method for setting the TCI state and a method for notifying a set of multiple BWPs / CCs when setting / indicating unified / common TCI.

[0123] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. The wireless communication methods according to the respective embodiments may be applied independently or in combination.

[0124] In the present disclosure, "A / B / C", "at least one of A, B, and C" may be read interchangeably with each other. In the present disclosure, cell, serving cell, CC, carrier, BWP, DL BWP, UL BWP, active DL BWP, active UL BWP, band may be read interchangeably with each other. In the present disclosure, index, ID, indicator, resource ID may be read interchangeably with each other. In the present disclosure, support, control, be able to control, operate, be able to operate may be read interchangeably with each other.

[0125] In the present disclosure, configure, activate, update, indicate, enable, specify, select may be read interchangeably with each other.

[0126] In the present disclosure, the upper layer signaling may be any one of, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof. In the present disclosure, RRC, RRC signaling, RRC parameters, upper layer, upper layer parameters, RRC information element (IE), RRC message, may be read interchangeably with each other.

[0127] MAC signaling may use, for example, a MAC control element (MAC CE), a MAC Protocol Data Unit (PDU), etc. The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0128] In the present disclosure, MAC CE, activation / deactivation command, may be read interchangeably with each other.

[0129] In the present disclosure, pool, set, group, list, candidate, may be read interchangeably with each other.

[0130] In the present disclosure, DMRS, DMRS port, antenna port, may be read interchangeably with each other.

[0131] In the present disclosure, special cell, SpCell, PCell, PSCell, may be read interchangeably with each other.

[0132] In the present disclosure, beam, spatial domain filter, spatial setting, TCI state, UL TCI state, unified TCI state, unified beam, common TCI state, common beam, TCI assumption, QCL assumption, QCL parameter, spatial domain reception filter, UE spatial domain reception filter, UE reception beam, DL beam, DL reception beam, DL precoding, DL precoder, DL-RS, RS of QCL type D for TCI state / QCL assumption, RS of QCL type A for TCI state / QCL assumption, spatial relationship, spatial domain transmission filter, UE spatial domain transmission filter, UE transmission beam, UL beam, UL transmission beam, UL precoding, UL precoder, PL-RS may be read as each other. In the present disclosure, QCL type X-RS, DL-RS associated with QCL type X, DL-RS having QCL type X, source of DL-RS, SSB, CSI-RS, SRS may be read as each other.

[0133] In the present disclosure, common beam, common TCI, common TCI state, unified TCI, unified TCI state, TCI state applicable to DL and UL, TCI state applied to multiple (multiple types) of channels / RSs, TCI state applicable to multiple types of channels / RSs, PL-RS may be read as each other.

[0134] In the present disclosure, multiple TCI states set by RRC, multiple TCI states activated by MAC CE, pool, TCI state pool, active TCI state pool, common TCI state pool, joint TCI state pool, separate TCI state pool, common TCI state pool for UL, common TCI state pool for DL, common TCI state pool set / activated by RRC / MAC CE, TCI state information may be read as each other.

[0135] In the present disclosure, panel, Uplink (UL) transmission entity, TRP, spatial relationship, Control Resource SET (CORESET), PDSCH, codeword, base station, antenna port of a signal (e.g., Demodulation Reference Signal (DMRS) port), antenna port group of a signal (e.g., DMRS port group), group for multiplexing (e.g., Code Division Multiplexing (CDM) group, reference signal group, CORESET group), CORESET pool, CORESET subset, CW, redundancy version (RV), layer (MIMO layer, transmission layer, spatial layer), may be read as each other. Also, panel Identifier (ID) and panel may be read as each other. In the present disclosure, TRP ID, TRP-related ID, CORESET pool index, position of one of two TCI states corresponding to one code point of a field in DCI (ordinal number, first TCI state or second TCI state), TRP, may be read as each other.

[0136] In the present disclosure, TRP, transmission point, panel, DMRS port group, CORESET pool, one of two TCI states associated with one code point of the TCI field, may be read as each other.

[0137] In the present disclosure, single TRP, single TRP system, single TRP transmission, single PDSCH, may be read as each other. In the present disclosure, multi-TRP, multi-TRP system, multi-TRP transmission, multi-PDSCH, may be read as each other. In the present disclosure, single DCI, single PDCCH, multi-TRP based on single DCI, activation of two TCI states on at least one TCI code point, may be read as each other.

[0138] In the present disclosure, a single TRP, a channel using a single TRP, a channel using one TCI state / spatial relation, the non - activation of multi - TRP by RRC / DCI, the non - activation of multiple TCI states / spatial relations by RRC / DCI, the non - setting of one CORESET pool index (CORESETPoolIndex) value for any CORESET, and the non - mapping of any code point of the TCI field to two TCI states may be read - swapped with each other.

[0139] In the present disclosure, a multi - TRP, a channel using a multi - TRP, a channel using multiple TCI states / spatial relations, the activation of multi - TRP by RRC / DCI, the activation of multiple TCI states / spatial relations by RRC / DCI, at least one of multi - TRP based on single DCI and multi - TRP based on multi - DCI may be read - swapped with each other. In the present disclosure, a multi - TRP based on multi - DCI and the setting of one CORESET pool index (CORESETPoolIndex) value for a CORESET may be read - swapped with each other. In the present disclosure, a multi - TRP based on single DCI and the mapping of at least one code point of the TCI field to two TCI states may be read - swapped with each other.

[0140] In the present disclosure, TRP#1 (the first TRP) may correspond to CORESET pool index = 0 or may correspond to the first TCI state among two TCI states corresponding to one code point of the TCI field. TRP#2 (the second TRP) may correspond to CORESET pool index = 1 or may correspond to the second TCI state among two TCI states corresponding to one code point of the TCI field.

[0141] In the present disclosure, a cell, a serving cell, a CC, a BWP, a BWP within a CC, and a band may be read - swapped with each other.

[0142] In the present disclosure, "parameter X is not set", "parameter X does not exist", "parameter X is absent", "parameter X is not set effectively", "parameter X is set ineffectively", etc. may be read as each other.

[0143] (Wireless communication method) In the present disclosure, DL TCI, DL-only TCI (DL only TCI), separate DL-only TCI, DL common TCI, DL unified TCI, common TCI, unified TCI may be read as each other. In the present disclosure, UL TCI, UL-only TCI (UL only TCI), separate UL-only TCI, UL common TCI, UL unified TCI, common TCI, unified TCI may be read as each other.

[0144] In the present disclosure, the setting / indication / updating of the separate TCI state, the setting / indication of the DL-only TCI state, the setting / indication / updating of the UL-only TCI state, the setting / indication / updating of the TCI states of DL and UL may be read as each other.

[0145] In the present disclosure, in the case of a joint TCI pool, when a joint TCI pool is set, may be read as each other. In the present disclosure, in the case of a separate TCI pool, when a separate TCI pool is set, may be read as each other.

[0146] In the present disclosure, when a joint TCI pool is set, when the TCI pool set for DL and the TCI pool set for UL are common, when the TCI pools for both DL and UL are set, when one TCI pool (one set of TCIs) is set, may be read as each other.

[0147] In the present disclosure, when a separate TCI pool is set, when the TCI pool set for DL is different from the TCI pool set for UL, when a TCI pool for DL (first TCI pool, first TCI set) and a TCI pool for UL (second TCI pool, second TCI set) are set, when a plurality of TCI pools (a plurality of sets of TCI) are set, when a TCI pool for DL is set, they may be read mutually. When a TCI pool for DL is set, the TCI pool for UL may be equal to the set TCI pool.

[0148] In the present disclosure, the channels / RSs to which common TCI is applied may be PDSCH / HARQ-ACK information / PUCCH / PUSCH / CSI-RS / SRS.

[0149] In each embodiment of the present disclosure, a pool (list) including a plurality of unified TCI states may be set / activated for a UE, and one or more TCI states among the plurality of unified TCI states may be indicated. The setting / activation may be performed with setting information transmitted via upper layer signaling (for example, RRC signaling / MAC CE). The indication may be performed with indication information transmitted using DCI.

[0150] Note that in the present disclosure, signaling configuration, signaling, setting, configuration, setting information, indication, indication information, list, pool, etc. may be read mutually.

[0151] <First Embodiment> In the first embodiment, a method for setting / indicating TCI states for a plurality of BWPs / CCs will be described.

[0152] The UE may receive RRC parameters for setting unified TCI states. The RRC parameters for setting unified TCI states may be existing parameters (defined in Rel.15 / 16) or parameters newly defined after Rel.17.

[0153] The RRC parameters for setting the unified TCI state may be included in the parameters for DL channel setting. The parameters for DL channel setting may be included, for example, in the PDSCH setting (RRC information element "PDSCH-Config").

[0154] In the present disclosure, the UE may apply the set TCI state as the unified TCI state to a plurality of channels / signals / RSs. In the present disclosure, the plurality of channels / signals / RSs may be, for example, at least one of CORESET, PDSCH, PDCCH, CSI-RS, PUCCH, PUSCH, SRS.

[0155] 《Method for Setting TCI State List》 [Setting Method 1] For each CC / BWP, a unified TCI state (a list of unified TCI states) may be set. In other words, each of the plurality of TCI state lists set for the UE may be explicitly associated with the CC / BWP.

[0156] In the present disclosure, setting a unified TCI state for a CC / BWP may mean setting a TCI state list including one or more TCI states for the CC / BWP. The TCI state list may be defined, for example, within the PDSCH setting.

[0157] In the present disclosure, the TCI state list set for each CC / BWP may be at least one of a joint TCI state and a separate TCI state (TCI state for UL only / TCI state for DL only / TCI state for UL and DL). Also, the TCI state list set for each CC / BWP may have at least a part of the joint TCI state list and the separate TCI state list in common. Also, the TCI state list set for each CC / BWP may be a list in which at least a part of the joint TCI state and the separate TCI state is common.

[0158] FIG. 8A is a diagram illustrating an example of a method for setting a TCI state list according to the first embodiment. In FIG. 8A, a plurality of BWPs (BWP#1 in CC#1 and BWP#1 in CC#2 are described) are set for the UE. In the example of FIG. 8A, a TCI state list is set for each BWP. The UE determines the TCI state to be applied to a plurality of channels / signals based on the set TCI state list. That is, in a case like FIG. 8A, the UE can consider that independent TCI state lists for a unified TCI state are set for CC#1 and CC#2.

[0159] Note that the number of TCI states included in the TCI state list and the number of CCs / BWPs in each drawing representing the setting / indication of the TCI state of the present disclosure are merely examples and are not limited to this example.

[0160] [Setting Method 2] A unified TCI state (unified TCI state list) may be set in units of a plurality of CCs / BWPs. In other words, one or more CCs / BWPs set for the UE may not be explicitly associated with the TCI state list.

[0161] FIG. 8B is a diagram illustrating another example of a method for setting a TCI state list according to the first embodiment. In FIG. 8B, a plurality of BWPs (BWP#1 in CC#1 and BWP#1 in CC#2 are described) are set for the UE. In the example of FIG. 8B, a TCI state list is set in units of the plurality of BWPs.

[0162] In the example of FIG. 8B, the TCI state list is included in the PDSCH setting in BWP#1 of CC#1, and the TCI state list is not included (absent) in the PDSCH setting in BWP#1 of CC#2.

[0163] The UE determines the TCI states to be applied to multiple channels / signals of BWP#1 of CC#1 and BWP#1 of CC#2 based on the TCI state list set for BWP#1 of the configured CC#1. That is, in the case as shown in FIG. 8B, the UE can consider that a common TCI state list for the unified TCI state is set for CC#1 and CC#2.

[0164] In at least one of the above Settings 1 and 2, in the setting of the unified TCI state (TCI state list), the RRC parameters for TCI state setting defined in Rel.15 / 16 may be used.

[0165] Each TCI state (parameters of the TCI state) included in the TCI state list may include at least a TCI state ID ("tci-StateID"), information on the first QCL type ("qcl-Type1"), and information on the second QCL type ("qcl-Type2").

[0166] The QCL information ("QCL-Info") set by the information on the first QCL type ("qcl-Type1") and the information on the second QCL type ("qcl-Type2") may include at least one of a cell ID, a BWP ID, an RS ID, and information on the QCL type.

[0167] If both the cell ID and the BWP ID of the source RS of QCL type A / D in the QCL information ("QCL-Info") do not exist (are absent), the UE may assume that the source RS of the QCL type A / D is within the BWP / CC to which the TCI state is applied.

[0168] Also, if at least one of the cell ID and the BWP ID of the source RS of QCL type A / D in the QCL information ("QCL-Info") does not exist (is absent), the UE may assume that the source RS of the QCL type A / D is within the BWP / CC to which the TCI state is applied.

[0169] If at least one of the cell ID and BWP ID of the QCL type A / D source RS in the QCL information (「QCL-Info」) is absent, the UE may determine whether the QCL information is for a cell with a configured TCI state or, when a common TCI state list is configured among cells (CCs), for the cell that each CC refers to as the QCL source RS, based on the configuration of certain upper layer parameters (e.g., parameters related to the unified TCI state / parameters related to the unified TCI state for multiple CCs / BWPs).

[0170] Note that when the TCI state list is not configured for each CC / BWP / PDSCH setting (i.e., when the TCI state list is not configured for multiple CC / BWP / PDSCH setting units), the UE may receive configuration information indicating which TCI state list corresponding to which CC / BWP to use / refer to for the CC / BWP for which the TCI state list is not configured. The said configuration information may be configured for each CC / BWP / PDSCH setting.

[0171] For example, in the example of Figure 8B, the TCI state list is not configured for BWP#1 in CC#2, but information regarding the reference CC / BWP index (ID, here, BWP#1 in CC#1) may be configured so as to use / refer to the TCI state list in BWP#1 in CC#1.

[0172] In this case, the UE may not need to receive (or may not be configured to receive) the applicable CC / BWP list. This is because it does not require a CC / BWP list to receive information regarding the reference CC / BWP.

[0173] Note that the information regarding the reference CC / BWP (reference CC / BWP index (ID), reference CC / BWP index (ID)) may be notified by a MAC CE. The UE may determine the reference CC / BWP index (ID) from among the CC / BWP indexes configured by RRC and notified by the MAC CE.

[0174] According to the above method for setting the TCI state list, it is possible to appropriately set a unified TCI state / a list of unified TCI states for a plurality of CCs / BWPs.

[0175] 《Method for Indicating TCI State》 Hereinafter, the method for indicating the TCI state after the above-mentioned TCI state list is set will be described.

[0176] The UE may be instructed to select one TCI state from the set TCI state list. The indication of the TCI state may be performed by at least one of MAC CE and DCI.

[0177] [Indication Method 1] Hereinafter, the method for indicating the TCI state corresponding to the above setting method 1 will be described. Hereinafter, a unified TCI state / a list of unified TCI states may be set for each CC / BWP.

[0178] The UE may be instructed to select the TCI state for each CC / BWP from the TCI state list set for each CC / BWP.

[0179] The indication of the TCI state for each CC / BWP may be performed using a common (one) MAC CE / DCI. By using a common MAC CE / DCI, signaling overhead can be reduced.

[0180] The common (one) MAC CE / DCI may include a plurality of fields indicating the TCI state. The plurality of fields may respectively correspond to a plurality of CCs / BWPs.

[0181] In addition, the common (one) MAC CE / DCI may include a field indicating a combination of one or more TCI states. A plurality of candidates for the combination may be set by RRC IE or may be specified in the specification.

[0182] Regarding the application / timeline of a common (single) MAC CE / DCI, it will be described in detail later.

[0183] Also, the indication of the TCI state in each CC / BWP may be performed using an independent MAC CE / DCI for each CC / BWP. By using an independent MAC CE / DCI, more flexible control becomes possible.

[0184] FIG. 9A is a diagram showing an example of a method for indicating a TCI state list according to the first embodiment. The settings of a plurality of BWPs and the TCI state list in FIG. 9A are the same as those in FIG. 8A.

[0185] In the example of FIG. 9A, for the UE, the TCI state for each CC is indicated using a MAC CE / DCI. Based on the indication, the UE determines the TCI state to be applied to a plurality of channels / signals (in the example of FIG. 9A, for both CC#1 and CC#2, TCI state #2 is determined).

[0186] [[Application of Common MAC CE / DCI]] Hereinafter, the timing from the indication of a beam (e.g., a common TCI state) based on the above-described common MAC CE / DCI to the application of the beam will be described.

[0187] In the present disclosure, the timing from the indication of a beam (e.g., a common TCI state) based on DCI to the application of the beam, the beam application time, the period until the beam application, etc. may be read interchangeably with each other.

[0188] Also, in the present disclosure, the timing of the start of the beam application time may be the timing (e.g., symbol, slot, or specific time unit) of the start (or end) of reception of DCI that indicates the application of a beam (e.g., common TCI state). Also, the timing of the start of the beam application time may be the timing (e.g., symbol, slot, or specific time unit) of the start (or end) of transmission of HARQ-ACK information for DCI that indicates the application of a beam (e.g., common TCI state).

[0189] Note that, as the DCI that indicates the application of a beam, any DCI format defined up to Rel.16 may be used, or a new DCI format defined after Rel.17 may be used.

[0190] In the present disclosure, the beam application time for a CC / BWP that receives DCI indicating the application of a beam may be referred to as the first beam application time. Also, the beam application time for a CC / BWP different from the CC / BWP that receives DCI indicating the application of a beam may be referred to as the second beam application time.

[0191] The UE may assume that the first beam application time and the second beam application time are defined / set / indicated to be the same / different. For example, the UE may assume that the second beam application time is defined / set / indicated to be longer (or shorter) than the first beam application time, or equal to the first beam application time.

[0192] Also, when the UE operates the unified TCI state framework in CA, the UE may assume that the beam application times of a plurality of (e.g., all) CCs included in the list of CCs to which the unified TCI state is applied (application CC list) are defined / set / indicated to be equal. According to this method, since the beam application time is different for each CC, the TCI state is different for each CC, and a situation where CA cannot be performed appropriately can be avoided.

[0193] The UE may assume that the beam application time that is the same as the longest beam application time among the beam application times for each CC included in the applicable CC list is specified / set / indicated.

[0194] Also, the UE may assume that the beam application time that is the same as the shortest beam application time among the beam application times for each CC included in the applicable CC list is specified / set / indicated.

[0195] The UE may set the beam application time for each CC / each BWP in a CC. The UE may receive information regarding the setting of the beam application time for each CC / each BWP in a CC by using upper layer signaling (e.g., RRC signaling).

[0196] At this time, the beam application times for each CC / BWP may be different or may be a common value.

[0197] The beam application time may be set for each band (or for each of a plurality of CCs / BWPs). The UE may receive information regarding the setting of the beam application time for each of a plurality of CCs / BWPs by using upper layer signaling (e.g., RRC signaling).

[0198] The beam application times for each CC / BWP may be different or may be a common value. For example, based on the process time of the UE in each CC, the beam application time applicable to all CCs may be calculated, and the beam application times for each CC / BWP may be a common value.

[0199] When the beam application times for each CC / BWP are different, the UE may receive information regarding the beam application time for each CC / BWP.

[0200] Also, when the beam application time for each CC / BWP is different, the UE may receive information regarding the beam application time for a certain CC / BWP and determine the beam application time for other CC / BWPs based on specific rules. For example, the UE may receive information regarding the first beam application time and determine the second beam application time based on specific rules.

[0201] The specific rule may be that a specific offset value for the first beam application time is notified to the UE, and the UE determines the second beam application time by adding / subtracting the specific offset value to / from the first beam application time.

[0202] The specific offset value may be set by upper layer signaling for the UE, may be predefined in the specification, or may be reported to the NW (network, e.g., base station) as UE capability information.

[0203] The UE may set the beam application time for each applicable CC list. The UE may receive information regarding the setting of the beam application time for each applicable CC list using upper layer signaling (e.g., RRC signaling). According to this, it is possible to cope with a situation where the beam application time is different depending on the number of CCs included in each applicable CC list and the bandwidth.

[0204] The UE may set the beam application time for each common TCI state. The UE may receive information regarding the setting of the beam application time for each common TCI state using upper layer signaling (e.g., RRC signaling) / DCI. According to this, it becomes possible to set different beam application times for each indicated TCI state, and it becomes possible to indicate the beam application time by DCI.

[0205] [Indication Method 2] Hereinafter, an indication method for the TCI state corresponding to the above setting method 2 will be described. Hereinafter, a unified TCI state / a unified TCI state list may be set in units of a plurality of CC / BWPs.

[0206] The UE may be instructed to select one TCI state from the configured TCI state list. The UE may determine / judge that the instructed TCI state is the TCI state in multiple CCs / BWPs.

[0207] The instruction of the TCI state may be performed using a common (one) MAC CE / DCI. If the TCI state of a certain CC / BWP is instructed with one MAC CE / DCI, the TCI state of other CCs / BWPs can also be instructed / updated. When the UE is instructed of the TCI state in a certain CC / BWP, it may also update the TCI state in other CCs / BWPs.

[0208] FIG. 9B is a diagram showing another example of the method for instructing the TCI state list according to the first embodiment. The setting of the multiple BWPs and the TCI state list in FIG. 9B is the same as that in FIG. 8B.

[0209] In the example of FIG. 9B, the UE is instructed of the TCI state of BWP#1 in CC#1 using MAC CE / DCI. Based on this instruction, the UE determines the TCI state to be applied to multiple channels / signals of BWP#1 in CC#1 and multiple channels / signals of BWP#1 in CC#2.

[0210] According to the above method for instructing the TCI state, it is possible to appropriately and uniformly instruct the TCI state for multiple CCs / BWPs.

[0211] 《Method for Configuring QCL Information》 Hereinafter, the QCL information included in the TCI state configured by RRC will be described.

[0212] The configuration of the QCL information may be applied when at least one of Cases 1 to 3 in the above QCL constraints is satisfied.

[0213] [QCL Information 1] The QCL information corresponding to the above setting method 1 and indication method 1 will be described below. Hereinafter, for each CC / BWP, a unified TCI state / unified TCI state list may be set / indicated.

[0214] [[QCL information 1-1]] The following may be applicable when RS of a first QCL type (for example, QCL type D) specific to a CC / BWP is set for a UE. When RS of a first QCL type (for example, QCL type D) specific to a CC / BWP is set, it may correspond to, for example, Case 1 / Case 3 described above.

[0215] The TCI state in the set TCI state list may include, at least in the (parameters of the TCI state), a TCI state ID ("tci-StateID"), information on the (setting) of the first QCL type ("qcl-Type1"), and information on the (setting) of the second QCL type ("qcl-Type2").

[0216] Information on the first QCL type ("qcl-Type1") and information on the second QCL type ("qcl-Type2") may not include information related to the serving cell (a field related to the cell (cell ID, "Cell")).

[0217] Information on the first QCL type ("qcl-Type1") and information on the second QCL type ("qcl-Type2") may not include information related to the BWP (a field related to the BWP ID ("bwp-ID")). Also, information on the first QCL type ("qcl-Type1") and information on the second QCL type ("qcl-Type2") may include information related to the BWP (a field related to the BWP ID ("bwp-ID")), and the field related to the BWP ID may indicate a specific value (for example, 1).

[0218] The information of the first QCL type ("qcl-Type1") and the information of the second QCL type ("qcl-Type2") may include a field regarding the reference signal ("referenceSignal").

[0219] The information of the first QCL type ("qcl-Type1") and the information of the second QCL type ("qcl-Type2") may include a field regarding the QCL type ("qcl-Type").

[0220] FIG. 10A is a diagram showing an example of a method for setting QCL information according to the first embodiment.

[0221] Hereinafter, with reference to FIG. 10A, consider a case where TCI state #2 is indicated in BWP #1 in CC #1 described in FIG. 9A. In the example of FIG. 10A, the QCL information ("qcl-Type1" and "qcl-Type2") for TCI state #2 with respect to BWP #1 in CC #1 is shown. In the example of FIG. 10A, "Cell" and "bwp-ID" are not included (absent) in each of the QCL information ("qcl-Type1" and "qcl-Type2"). Also, the "referenceSignal" is included in each of the QCL information ("qcl-Type1" and "qcl-Type2"), and NZP CSI-RS #5 is set respectively. Also, the "qcl-Type" is included in each of the QCL information ("qcl-Type1" and "qcl-Type2"), the "qcl-Type" of "qcl-Type1" is set to "typeA", and the "qcl-Type" of "qcl-Type2" is set to "typeD" respectively.

[0222] At this time, the UE determines NZP CSI-RS #5 in the target CC (i.e., the CC of the DMRS to which the TCI state is applied) in BWP #1 in CC #1 as the QCL type A / D RS.

[0223] [[QCL Information 1-2]] The following may be applicable when the RS of the 2 th QCL type (e.g., QCL type D) common to the CC / BWP is set for the UE. When the RS of the 2 th QCL type (e.g., QCL type D) common to the CC / BWP is set, it may correspond to, for example, Case 2 described above. 2 The RS of the 2 th QCL type (e.g., QCL type D) common to the CC / BWP may be set. When the RS of the 2 th QCL type (e.g., QCL type D) common to the CC / BWP is set, it may correspond to, for example, Case 2 described above. 2 The RS of the 2 th QCL type (e.g., QCL type D) common to the CC / BWP may be set. When the RS of the 2 th QCL type (e.g., QCL type D) common to the CC / BWP is set, it may correspond to, for example, Case 2 described above.

[0224] The TCI state list's TCI state to be set may include, in the (parameters of the TCI state), at least the TCI state ID ("tci-StateID"), the information of the first QCL type ("qcl-Type1"), and the information of the second QCL type ("qcl-Type2").

[0225] The information of the first QCL type ("qcl-Type1") may not have a field related to the cell (cell ID, "Cell").

[0226] The information of the second QCL type ("qcl-Type2") may include a field related to the cell (cell ID, "Cell").

[0227] The information of the first QCL type ("qcl-Type1") may not have a field related to the BWP ID ("bwp-ID"). Also, the information of the first QCL type ("qcl-Type1") may include a field related to the BWP ID ("bwp-ID"), and the field related to the BWP ID may indicate a specific value (e.g., 1).

[0228] The information of the second QCL type ("qcl-Type2") may include a field related to the BWP ID ("bwp-ID").

[0229] The information of the first QCL type ("qcl-Type1") and the information of the second QCL type ("qcl-Type2") may include a field related to the reference signal ("referenceSignal").

[0230] The information of the first QCL type ("qcl-Type1") and the information of the second QCL type ("qcl-Type2") may include a field regarding the QCL type ("qcl-Type").

[0231] FIG. 10B is a diagram showing another example of a method for setting QCL information according to the first embodiment.

[0232] Hereinafter, with reference to FIG. 10B, consider a case where TCI state #2 is indicated in BWP #1 in CC #1 described in FIG. 9A. In the example of FIG. 10B, the QCL information ("qcl-Type1" and "qcl-Type2") of TCI state #2 for BWP #1 in CC #1 is shown. In the example of FIG. 10B, "Cell" and "bwp-ID" are not included (absent) in "qcl-Type1". Also, "Cell" and "bwp-ID" are included in "qcl-Type2", and cell #2 is set for each of them. Also, "referenceSignal" is included in each of the QCL information ("qcl-Type1" and "qcl-Type2"), and NZP CSI-RS #5 is set for each of them. Also, "qcl-Type" is included in each of the QCL information ("qcl-Type1" and "qcl-Type2"), and the "qcl-Type" of "qcl-Type1" is set to "typeA", and the "qcl-Type" of "qcl-Type2" is set to "typeD", respectively.

[0233] At this time, the UE determines that NZP CSI-RS #5 in the target CC (i.e., the CC of the DMRS to which the TCI state is applied) in BWP #1 in CC #1 is a QCL type A RS. Also, the UE determines that NZP CSI-RS #5 in the CC explicitly indicated by "qcl-Type2" (for example, CC #2 corresponding to cell #2) is a QCL type D RS.

[0234] In the examples shown in FIGS. 10A and 10B, the case where the QCL type A RS and the QCL type D RS are the same RS has been described, but it is not limited to this. According to the above-mentioned QCL constraints (cases 1 to 3), cases where the QCL type A RS and the QCL type D RS are different RSs are also conceivable.

[0235] [QCL Information 2] Hereinafter, the QCL information corresponding to the above setting method 2 and instruction method 2 will be described. Hereinafter, in a plurality of CC / BWP units, a unified TCI state / a list of unified TCI states may be set / instructed.

[0236] [[QCL Information 2-1]] The following may be applicable when an RS of a first QCL type (for example, QCL type D) specific to a CC / BWP is set for the UE.

[0237] The TCI state of the TCI state list set in this embodiment may be the same as the configuration of the TCI state described in the above QCL information 1-1.

[0238] Hereinafter, with reference to FIG. 10A, consider the case where TCI state #2 is instructed in BWP#1 in CC#1 described in FIG. 9B.

[0239] At this time, the UE determines the NZP CSI-RS #5 in the target CC (that is, the CC of the DMRS to which the TCI state is applied) as the QCL type A / D RS in a plurality of (for example, all) CC / BWPs included in the CC / BWP list.

[0240] [[QCL Information 2-2]] The following may be applicable when an RS of a first QCL type (for example, QCL type D) common to a CC / BWP is set for the UE.

[0241] The TCI states in the TCI state list set in this embodiment may be the same as the configuration of the TCI states described in the above QCL information 1-2.

[0242] Hereinafter, with reference to FIG. 10B, consider a case where TCI state #2 is indicated in BWP#1 in CC#1 described in FIG. 9B.

[0243] At this time, the UE determines that NZP CSI-RS #5 in the target CC (that is, the CC of the DMRS to which the TCI state is applied) in a plurality of (for example, all) CC / BWPs included in the CC / BWP list is QCL type A RS. Also, the UE determines that NZP CSI-RS #5 of the CC explicitly indicated by "qcl-Type2" (for example, CC#2 corresponding to cell #2) is QCL type D RS.

[0244] According to the above method for setting QCL information, it is possible to appropriately set / indicate QCL information corresponding to a unified TCI state for a plurality of CC / BWPs.

[0245] <Second Embodiment> In the second embodiment, a method for setting a CC / BWP list using RRC signaling will be described.

[0246] A CC / BWP list may be set / notification to the UE using RRC signaling.

[0247] The CC / BWP list set for the UE may be one or two lists. Also, the CC / BWP list set for the UE may be one or more (two or more) lists.

[0248] The UE may configure the CC / BWP list by using the RRC parameters for simultaneous beam updates of multiple CCs defined in Rel.16 (e.g., at least one of "simultaneousSpatial-UpdatedList1-r16", "simultaneousSpatial-UpdatedList2-r16", "simultaneousTCI-UpdateList1-r16", and "simultaneousTCI-UpdateList2-r16").

[0249] Also, the UE may configure the CC / BWP list by using the new RRC parameters defined since Rel.17.

[0250] The CC / BWP list may be configured on a cell group basis. Also, the CC / BWP list may be configured for each UE. Also, the CC / BWP list may be configured for each band.

[0251] Also, the CC / BWP list may be configured for each CC / each BWP. In other words, the CC / BWP list may be included in the configuration (RRC parameter) of the BWP. For example, the CC / BWP list may be configured for each TCI state / each TCI state list / each PDSCH configuration. In other words, the CC / BWP list may be included in the configuration (RRC parameter) of the TCI state / the configuration (RRC parameter) of the TCI state list / within the PDSCH configuration.

[0252] For example, in the case where the CC / BWP list can be configured within the TCI state / TCI state list / PDSCH configuration, and when a TCI state list is configured for each CC / BWP (i.e., corresponding to the above-described setting method 1), the CC / BWP list may not be included in the TCI state, or the CC / BWP list may be included in the TCI state (the CC / BWP may be explicitly indicated).

[0253] Further, for example, in the case where a CC / BWP list can be set within the TCI state / TCI state list / PDSCH configuration, and the TCI state list is set in units of a plurality of CC / BWPs (i.e., in the case corresponding to the above-described setting method 2), the CC / BWP list may not be included in the TCI state.

[0254] FIG. 11A is a diagram showing an example of a method for setting a CC / BWP list according to the second embodiment. The example shown in FIG. 11A shows an example of a case where a TCI state list is set for each CC / BWP (i.e., a case corresponding to the above-described setting method 1).

[0255] In the example shown in FIG. 11A, for the UE, a CC list is included in the PDSCH configuration ("PDSCH-Config"). The CC list explicitly indicates the CCs corresponding to the PDSCH configuration.

[0256] Note that, in the example shown in FIG. 11A, the case where the CC list is included in the PDSCH configuration has been described, but a configuration in which the CC list is not included in the PDSCH may also be used.

[0257] FIG. 11B is a diagram showing another example of a method for setting a CC / BWP list according to the second embodiment. The example shown in FIG. 11B shows an example of a case where a TCI state list is set in units of a plurality of CC / BWPs (i.e., a case corresponding to the above-described setting method 2).

[0258] In the example shown in FIG. 11B, for the UE, a CC list is included in the PDSCH configuration ("PDSCH-Config") of BWP#1 in CC#1. That is, in the CCs for which the TCI state list is set, a configuration in which the CC list is set may be used. The CC list may set / indicate the CCs to which the TCI state list is applied.

[0259] According to the second embodiment described above, it is possible to appropriately set the CC / BWP list to which the unified TCI state is applied.

[0260] <Third Embodiment> In the third embodiment, a method for setting / notification / updating / activating a CC / BWP list using a MAC CE will be described.

[0261] For the UE, the CC / BWP list may be set / notification / updated / activated using a MAC CE. The MAC CE may be, for example, a MAC CE that indicates activation / deactivation of a TCI state. The MAC CE that indicates activation / deactivation of a TCI state may be an existing MAC CE (defined in Rel.15 / 16), or may be a MAC CE defined after Rel.17.

[0262] The MAC CE for notifying the CC / BWP list may be a MAC CE that indicates activation / deactivation of a TCI state, which will be described in detail later.

[0263] 《MAC CE for Indicating Activation / Deactivation of a TCI State》 Hereinafter, the configuration of the MAC CE that indicates activation / deactivation of a TCI state in the unified TCI state framework will be described.

[0264] The MAC CE for indicating a joint TCI (the first MAC CE) and the MAC CE for indicating a separate TCI state (the second MAC CE) may be different MAC CEs. In other words, the first MAC CE and the second MAC CE may have different configurations / formats.

[0265] The first MAC CE may indicate only the joint TCI state. The UE may be instructed to activate / deactivate the joint TCI state based on the first MAC CE.

[0266] For the UE, in the first MAC CE, for each TCI field (code point) of the DCI, one TCI state (TCI state ID) may be indicated.

[0267] The second MAC CE may indicate only separate TCI states. The UE may be instructed to activate / deactivate the separate TCI states based on the second MAC CE.

[0268] For the UE, in the second MAC CE, for each TCI field (code point) of the DCI, one TCI state (e.g., a DL-only TCI state or a UL-only TCI state) or two TCI states (DL and UL TCI states) may be indicated.

[0269] FIG. 12 is a diagram showing an example of TCI state indication according to the third embodiment. For the UE, a TCI state list including one or more TCI states is set using higher layer signaling (e.g., RRC signaling). The UE is instructed to use joint TCI states in the first MAC CE and separate TCI states in the second MAC CE.

[0270] Note that in the present disclosure, the UE may determine whether the notified MAC CE is a MAC CE in the unified TCI framework or an existing MAC CE (defined in Rel.15 / 16) using at least one of a specific bit field (e.g., a reserved bit), a MAC sub-header, and an LCID included in the MAC CE.

[0271] At least one of Embodiments 3-1 and 3-2 described below may be applied to the MAC CE that instructs activation / deactivation of the TCI state in this embodiment.

[0272] [Embodiment 3-1] The MAC CE defined in Rel.15 / 16 may be used in at least one of the first MAC CE and the second MAC CE.

[0273] At least one of the first MAC CE and the second MAC CE may be a MAC CE diverted from the MAC CE defined in Rel.15 / 16. Also, at least one of the first MAC CE and the second MAC CE may be a MAC CE obtained by extending the MAC CE defined in Rel.15 / 16.

[0274] For example, the first MAC CE may be a MAC CE that indicates activation / deactivation of the TCI state of the UE-specific PDSCH (e.g., TCI States Activation / Deactivation for UE-specific PDSCH MAC CE) (see FIG. 5).

[0275] For example, the second MAC CE may be a MAC CE that indicates activation / deactivation of the TCI state of the UE-specific PDSCH (e.g., Enhanced TCI States Activation / Deactivation for UE-specific PDSCH MAC CE) (see FIG. 6).

[0276] In the present disclosure, the first MAC CE and the second MAC CE may be mutually interchangeable.

[0277] [Embodiment 3-2] At least one of the first MAC CE and the second MAC CE may use a MAC CE defined after Rel.17 (which may be referred to as a new MAC CE). Also, in Embodiment 4-2, as in Embodiment 4-1 described above, at least one of the first MAC CE and the second MAC CE may use a MAC CE defined in Rel.15 / 16.

[0278] The new MAC CE may be a MAC CE that notifies / indicates one TCI state ID corresponding to the code point of each TCI field included in the DCI. For example, this MAC CE may be used as the first MAC CE (see FIG. 13).

[0279] The new MAC CE may be a MAC CE that notifies / indicates one or more (e.g., two) TCI state IDs corresponding to the code point of each TCI field included in the DCI. For example, this MAC CE may be used as the second MAC CE. The second MAC CE may be the MAC CE described in FIG. 6 above.

[0280] The UE may be notified of the CC / BWP list using a MAC CE that indicates the activation / deactivation of the TCI state described above (e.g., a MAC CE to which Embodiment 3-1 / 3-2 is applicable).

[0281] A field for notifying the CC / BWP list may be added to the MAC CE that indicates the activation / deactivation of the TCI state described above. Fields other than the field for notifying the CC / BWP list may be, for example, fields of the MAC CE that indicates the activation / deactivation of the TCI state described above.

[0282] In addition, a MAC CE for indicating the CC / BWP list different from the MAC CE that indicates the activation / deactivation of the TCI state and includes a field for notifying the CC / BWP list may be defined.

[0283] FIGS. 14A and 14B are diagrams showing an example of a field of a MAC CE for notifying the CC / BWP list. FIG. 14A shows the field when the number of CC / BWPs included in the CC / BWP list is 8 or less (less than), and FIG. 14B shows the field when the number of CC / BWPs included in the CC / BWP list is 8 or more.

[0284] The UE may be notified / updated with the CC list based on a MAC CE that includes a field (denoted as C i ) for notifying the CC / BWP list as shown in FIGS. 14A and 14B.

[0285] For example, consider a case where the CC list (CC#0 - CC#7) is set for the UE using upper layer signaling (RRC signaling). In the example shown in FIG. 14A, when the UE is instructed with {C 0 ,C 1 ,…,C 7} = {1, 1, 1, 1, 0, 0, 0, 0} in the field for notifying the CC / BWP list included in the MAC CE, it may be determined that CC#0 - CC#3 are the active CC list.

[0286] Note that when a TCI state list is set for each CC / BWP, the UE may assume that the MAC CE for notifying the CC / BWP list is not notified. Also, when a TCI state list is set for each CC / BWP, the UE may assume that there is no field for notifying the CC / BWP list in the MAC CE.

[0287] Note that when the TCI state (list) is set in units of multiple CC / BWPs (for example, when the TCI state (TCI state list) is not set in the PDSCH configuration in at least one CC / BWP), it may be assumed that the MAC CE for notifying the CC / BWP list is notified. Also, when the TCI state (list) is set in units of multiple CC / BWPs, the UE may assume that there is a field for notifying the CC / BWP list in the MAC CE.

[0288] Note that regarding whether there is a field for notifying the CC / BWP list in the MAC CE, the UE may be controlled / switched using RRC signaling.

[0289] <<Modification of the Third Embodiment>> When the TCI state list is set for each CC / BWP, the MAC CE that notifies the CC / BWP list (the field of the MAC CE that notifies the CC / BWP list) is unnecessary.

[0290] On the other hand, when the TCI state list is set in multiple CC / BWP units (that is, when the TCI state (TCI state list) is not set in the PDSCH configuration in at least one CC / BWP), the MAC CE that notifies the CC / BWP list (the field of the MAC CE that notifies the CC / BWP list) is required. In this case, in at least one CC / BWP, the TCI state (TCI state list) is set within the PDSCH configuration.

[0291] FIG. 15 is a diagram showing an example of notification of a CC / BWP list according to a modification of the third embodiment. In the example shown in FIG. 15, for the UE, BWP#1 of CC#1, BWP#1 of CC#2, BWP#1 of CC#3, and BWP#1 of CC#4 are set using RRC. Also, for the UE, in BWP#1 of CC#1, the TCI state list is set.

[0292] In this case, the CC / BWP (BWP#1 of CC#1) in which the TCI state (TCI state list) is set may be a CC / BWP included in the active CC / BWP list. In other words, it may not be necessary to notify the CC / BWP (BWP#1 of CC#1) in which the TCI state (TCI state list) is set using the MAC CE. In this case, at least one of the fields of the MAC CE that notifies the above CC / BWP list becomes unnecessary. The unnecessary field may be used as a reserved bit. Also, the unnecessary field may explicitly indicate the cell (CC / BWP). For example, the MAC CE shown in FIG. 14A can also handle a case where a number greater than 8 (for example, 9) of CC / BWPs are set by RRC.

[0293] Also, in this case, the CC / BWP (BWP#1 of CC#1) for which the TCI state (TCI state list) is set does not necessarily have to be included in the active CC / BWP list. In this case, all of the fields of the MAC CE that notifies the above CC / BWP list are required. For example, the MAC CE shown in FIG. 14A can be applicable to the case where the number of CC / BWPs up to 8 are set in the RRC.

[0294] According to the third embodiment above, it becomes possible to appropriately perform the setting / notification / update / activation of the CC / BWP list by using the MAC CE.

[0295] <Fourth Embodiment> Higher layer parameters (RRC IEs) / UE capabilities corresponding to the functions (features) in at least one of the above-described embodiments may be defined. The UE capability may indicate that it supports this function.

[0296] A UE in which a higher layer parameter corresponding to the function (enabling the function) is set may perform the function. It may be defined that "a UE in which a higher layer parameter corresponding to the function is not set does not perform the function (for example, in accordance with Rel. 15 / 16)".

[0297] A UE that has reported a UE capability indicating that it supports the function may perform the function. It may be defined that "a UE that has not reported a UE capability indicating that it supports the function does not perform the function (for example, in accordance with Rel. 15 / 16)".

[0298] When a UE reports a UE capability indicating that it supports the function and a higher layer parameter corresponding to the function is set, the UE may perform the function. It may be defined that "when a UE does not report a UE capability indicating that it supports the function or when a higher layer parameter corresponding to the function is not set, the UE does not perform the function (for example, in accordance with Rel. 15 / 16)".

[0299] The UE capability may indicate whether the UE supports this function or not.

[0300] The function may be a unified TCI state framework.

[0301] The UE capability may be defined by whether it supports at least one of a unified TCI state framework, a joint / separate TCI pool, and a joint / separate beam indication.

[0302] The UE capability may be defined by whether it supports at least one of joint TCI, separate UL-only TCI, and separate DL-only TCI.

[0303] The UE capability may be defined by whether it supports UE operations related to the descriptions of the above embodiments.

[0304] The UE capability may be defined by whether it supports (dynamic) switching between joint TCI and separate TCI by MAC CE. When the UE does not support this UE capability, the UE may perform switching between joint TCI and separate TCI by RRC.

[0305] The UE capability may be specified by whether it supports setting a TCI state list for each CC / BWP. Also, the UE capability may be specified by whether it supports setting a TCI state list in units of multiple CC / BWPs.

[0306] The UE capability may be defined by whether it supports notifying a CC / BWP list using MAC CE.

[0307] The upper layer parameter corresponding to (enabling) that function may be an upper layer parameter related to the unified TCI state.

[0308] The upper layer parameters corresponding to (enabling) the function may be upper layer parameters related to at least one of joint TCI, separate UL-only TCI, and separate DL-only TCI.

[0309] According to the fourth embodiment above, the UE can realize the above functions while maintaining compatibility with existing specifications.

[0310] (Wireless communication system) Hereinafter, the configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In this wireless communication system, communication is performed using any one or a combination of the wireless communication methods according to the above embodiments of the present disclosure.

[0311] FIG. 16 is a diagram showing an example of the schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), 5th generation mobile communication system New Radio (5G NR), or the like.

[0312] Further, the wireless communication system 1 may support dual connectivity (multi-RAT dual connectivity (MR-DC)) between a plurality of Radio Access Technologies (RATs). 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)), and the like.

[0313] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the Master Node (MN), and the base station (gNB) of NR is the Secondary Node (SN). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0314] The wireless communication system 1 may support dual connectivity between a plurality of base stations within the same RAT (for example, NR-NR Dual Connectivity (NN-DC) where both the MN and the SN are base stations (gNBs) of NR).

[0315] The wireless communication system 1 may include a base station 11 that forms a relatively wide-coverage macro cell C1, and a base station 12 (12a - 12c) that is disposed within the macro cell C1 and forms a small cell C2 that is smaller than the macro cell C1. The user terminal 20 may be located within at least one cell. The arrangement, number, etc. of each cell and the user terminal 20 are not limited to the modes shown in the figures. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.

[0316] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) and dual connectivity (DC) using a plurality of component carriers (CCs).

[0317] Each CC may be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may 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, definitions, etc. of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a frequency band higher than FR2.

[0318] Also, the user terminal 20 may communicate using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.

[0319] The plurality of base stations 10 may be connected by wire (for example, an optical fiber compliant with Common Public Radio Interface (CPRI), an X2 interface, etc.) or wirelessly (for example, NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0320] The base station 10 may be connected to the core network 30 via another base station 10 or directly. The core network 30 may include at least one of, for example, Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), etc.

[0321] The user terminal 20 may be a terminal corresponding to at least one of communication systems such as LTE, LTE-A, 5G, etc.

[0322] In the wireless communication system 1, an orthogonal frequency division multiplexing (OFDM)-based wireless access method may be used. For example, in at least one of the downlink (DL) and the uplink (UL), Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), etc. may be used.

[0323] The wireless access method may be referred to as a waveform. Note that in the wireless communication system 1, other wireless access methods (for example, other single-carrier transmission methods, other multi-carrier transmission methods) may be used for the UL and DL wireless access methods.

[0324] In the wireless communication system 1, as a downlink channel, a Physical Downlink Shared Channel (PDSCH) shared by each user terminal 20, a Physical Broadcast Channel (PBCH), a Physical Downlink Control Channel (PDCCH), etc. may be used.

[0325] In the wireless communication system 1, as the uplink channel, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc., which are shared by each user terminal 20, may be used.

[0326] User data, upper layer control information, System Information Block (SIB), etc. are transmitted by the PDSCH. User data, upper layer control information, etc. may be transmitted by the PUSCH. Also, the Master Information Block (MIB) may be transmitted by the PBCH.

[0327] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0328] Note that the DCI for scheduling the PDSCH may be called DL assignment, DL DCI, etc., and the DCI for scheduling the PUSCH may be called UL grant, UL DCI, etc. Note that the PDSCH may be read as DL data, and the PUSCH may be read as UL data.

[0329] For PDCCH detection, a control resource set (CORESET) and a search space may be used. The CORESET corresponds to the resource for searching DCI. The search space corresponds to the search area and 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.

[0330] 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 "search space", "search space set", "search space configuration", "search space set configuration", "CORESET", "CORESET configuration", etc. in the present disclosure may be mutually interchangeable.

[0331] Uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (e.g., which may be referred to as Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) may be transmitted by PUCCH. A random access preamble for establishing a connection with the cell may be transmitted by PRACH.

[0332] Note that in the present disclosure, downlink, uplink, etc. may be expressed without the word "link". Also, the word "Physical" may not be added at the beginning of various channels.

[0333] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. may be transmitted.

[0334] The synchronization signal may be, for example, at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS / PBCH block, an SS Block (SSB), etc. Note that SS, SSB, etc. may also be called reference signals.

[0335] Also, in the wireless communication system 1, as the uplink reference signal (Uplink Reference Signal (UL-RS)), a sounding reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. may be transmitted. Note that DMRS may also be called a UE-specific reference signal.

[0336] (Base station) FIG. 17 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 transmission / reception unit 120, a transmission / reception antenna 130, and a transmission line interface 140. Note that one or more of the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140 may be provided.

[0337] In this example, the functional blocks of the characteristic parts in 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 processes of each part described below may be omitted.

[0338] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, etc., which are described based on the common knowledge in the technical field related to the present disclosure.

[0339] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission / reception, measurement, etc., using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140. The control unit 110 may generate data, control information, a sequence, etc., to be transmitted as a signal, and transfer it to the transmission / reception unit 120. The control unit 110 may perform call processing (setting, release, etc.) of a communication channel, state management of the base station 10, management of radio resources, etc.

[0340] The transmission / reception 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 transmission / reception unit 120 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, etc., which are described based on the common knowledge in the technical field related to the present disclosure.

[0341] The transmission / reception unit 120 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit. The transmission unit may be composed of a transmission processing unit 1211 and an RF unit 122. The reception unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0342] The transmission / reception antenna 130 can be composed of an antenna described based on the common knowledge in the technical field related to the present disclosure, such as an array antenna.

[0343] The transmission / reception unit 120 may transmit the above-described downlink channel, synchronization signal, downlink reference signal, etc. The transmission / reception unit 120 may receive the above-described uplink channel, uplink reference signal, etc.

[0344] The transmission / reception unit 120 may form at least one of a transmission beam and a reception beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.

[0345] The transmission / reception unit 120 (transmission processing unit 1211) may perform processing of the Packet Data Convergence Protocol (PDCP) layer, processing of the Radio Link Control (RLC) layer (e.g., RLC retransmission control), processing of the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), etc. on, for example, data and control information obtained from the control unit 110, and generate a bit string to be transmitted.

[0346] The transmission / reception 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 sequence to be transmitted, and output a baseband signal.

[0347] The transmission / reception unit 120 (RF unit 122) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmission / reception antenna 130.

[0348] On the other hand, the transmission / reception unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmission / reception antenna 130.

[0349] The transmission / reception unit 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 on the acquired baseband signal, and acquire user data, etc.

[0350] The transmission / reception unit 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.

[0351] The transmission path interface 140 may transmit and receive signals (backhaul signaling) with devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0352] Note that the transmission unit and reception unit of the base station 10 in the present disclosure may be configured by at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140.

[0353] The transmitting / receiving unit 120 may transmit one or more first Radio Resource Control (RRC) information elements regarding a list of Transmission Configuration Indicator (TCI) states including a plurality of transmission setting instructions (TCI) states applicable to a plurality of types of channels, and one or more second RRC information elements regarding the setting of one or more serving cells or one or more bandwidth parts. When the first RRC information element is not associated with a specific serving cell or a specific bandwidth part, the control unit 110 may determine one or more TCI states to be used for the specific serving cell or the specific bandwidth part based on the first RRC information element and the second RRC information element. The transmitting / receiving unit 120 may transmit a Medium Access Control (MAC) control element indicating an activated serving cell or bandwidth part among the one or more serving cells or the one or more bandwidth parts (First and Third Embodiments).

[0354] (User Equipment) FIG. 18 is a diagram showing an example of the configuration of a user equipment according to an embodiment. The user equipment 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Note that one or more of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided respectively.

[0355] Note that in this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and the user equipment 20 may be assumed to have other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

[0356] The control unit 210 controls the entire user equipment 20. The control unit 210 may be configured from a controller, a control circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0357] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission, 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.

[0358] 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 composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc. described based on the common understanding in the technical field related to the present disclosure.

[0359] The transceiver unit 220 may be configured as an integrated transceiver unit or may be composed of a transmitter unit and a receiver unit. The transmitter unit may be composed of the transmission processing unit 2211 and the RF unit 222. The receiver unit may be composed of the reception processing unit 2212, the RF unit 222, and the measurement unit 223.

[0360] The transceiver antenna 230 may be composed of an antenna described based on the common understanding in the technical field related to the present disclosure, such as an array antenna.

[0361] The transceiver unit 220 may receive the above-described downlink channel, synchronization signal, downlink reference signal, etc. The transceiver unit 220 may transmit the above-described uplink channel, uplink reference signal, etc.

[0362] The transceiver unit 220 may form at least one of a transmission beam and a reception beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.

[0363] The transmission / reception unit 220 (transmission processing unit 2211) may perform processing of the PDCP layer, processing of the RLC layer (e.g., RLC retransmission control), processing of the MAC layer (e.g., HARQ retransmission control), etc. on, for example, data and control information obtained from the control unit 210, and generate a bit sequence to be transmitted.

[0364] The transmission / reception unit 220 (transmission processing unit 2211) may perform transmission processing such as channel encoding (which may include error correction encoding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, digital-to-analog conversion, etc. on the bit sequence to be transmitted, and output a baseband signal.

[0365] Note that whether to apply DFT processing may be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is enabled, the transmission / reception unit 220 (transmission processing unit 2211) may perform DFT processing as the above-mentioned transmission processing to transmit the channel using the DFT-s-OFDM waveform, or if not, it may not perform DFT processing as the above-mentioned transmission processing.

[0366] The transmission / reception unit 220 (RF unit 222) may perform modulation to the radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the signal in the radio frequency band via the transmission / reception antenna 230.

[0367] On the other hand, the transmission / reception unit 220 (RF unit 222) may perform amplification, filtering, demodulation to the baseband signal, etc. on the signal in the radio frequency band received by the transmission / reception antenna 230.

[0368] The transmission / reception unit 220 (reception processing unit 2212) may perform 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 on the acquired baseband signal, and may acquire user data and the like.

[0369] The transmission / reception unit 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), reception 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.

[0370] Note that the transmission unit and reception unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmission / reception unit 220, the transmission / reception antenna 230, and the transmission path interface 240.

[0371] The transmission / reception unit 220 may receive one or more first Radio Resource Control (RRC) information elements regarding a list of Transmission Configuration Indicator (TCI) states including a plurality of TCI states applicable to a plurality of types of channels, and one or more second RRC information elements regarding the configuration of one or more serving cells or one or more bandwidth parts. When the first RRC information element is not associated with a specific serving cell or a specific bandwidth part, the control unit 210 may determine one or more TCI states to be used for the specific serving cell or the specific bandwidth part based on the first RRC information element and the second RRC information element. The transmission / reception unit 220 may receive a Medium Access Control (MAC) control element indicating an activated serving cell or bandwidth part among the one or more serving cells or the one or more bandwidth parts (First and Third Embodiments).

[0372] At least one of the first RRC information element and the second RRC information element may be set for each serving cell or bandwidth part, or may be set in units of a plurality of serving cells or a plurality of bandwidth parts (first and second embodiments).

[0373] When a reference signal of a specific quasi - co - location (QCL) type specific to a serving cell or a bandwidth part is set, information related to the serving cell and information related to the bandwidth part may not be included in the setting information of the first QCL type and the setting information of the second QCL type in each of the plurality of TCI states (first embodiment).

[0374] When a reference signal of a specific quasi - co - location (QCL) type common to a serving cell or a bandwidth part is set, information related to the serving cell and information related to the bandwidth part are not included in the setting information of the first QCL type in each of the plurality of TCI states, and information related to the serving cell and information related to the bandwidth part may be included in the setting information of the second QCL type in each of the plurality of TCI states (first embodiment).

[0375] (Hardware Configuration) Note that the block diagrams used in the description of the above embodiments show blocks of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Also, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically combined device, or may be realized using two or more physically or logically separated devices directly or indirectly (for example, using wired, wireless, etc.) connected, and realized using these multiple devices. The functional block may be realized by combining software with the above - mentioned one device or the above - mentioned multiple devices.

[0376] Here, functions include, but are not limited to, judgment, decision-making, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection determination, establishment, comparison, assumption, expectation, regarded as, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), assigning, etc. For example, a functional block (component) that enables transmission may be referred to as a transmitting unit, a transmitter, etc. In any case, as described above, the implementation method is not particularly limited.

[0377] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs the processing of the wireless communication method of the present disclosure. FIG. 19 is a diagram showing 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 physically be 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.

[0378] In the present disclosure, terms such as device, circuit, device, section, unit, etc. can be read interchangeably with each other. The hardware configuration of the base station 10 and the user terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without including some devices.

[0379] For example, although only one processor 1001 is shown, there may be a plurality of processors. Also, the processing may be executed by one processor, or the processing may be executed by two or more processors simultaneously, sequentially, or using other methods. Note that the processor 1001 may be implemented by one or more chips.

[0380] Each function in the base station 10 and the user terminal 20 is realized, for example, by causing a predetermined software (program) to be loaded onto hardware such as a processor 1001 and a memory 1002, so that the processor 1001 performs calculations, controls communication via a communication device 1004, or controls at least one of reading and writing data in the memory 1002 and the storage 1003.

[0381] The processor 1001 controls the entire computer by operating an operating system, for example. The processor 1001 may be constituted by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, registers, and the like. For example, at least a part of the above-described control unit 110 (210), transmission / reception unit 120 (220), etc. may be realized by the processor 1001.

[0382] Also, the processor 1001 reads a program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these. As the program, a program for causing a computer to execute at least a part of the operations described in the above embodiments is used. For example, the control unit 110 (210) may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and the same may be true for other functional blocks.

[0383] The memory 1002 is a computer-readable recording medium and may be composed of, for example, at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), and other suitable storage media. The memory 1002 may be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store a program (program code), software module, etc. executable for implementing the wireless communication method according to an embodiment of the present disclosure.

[0384] The storage 1003 is a computer-readable recording medium and may be composed of, for example, at least one of a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (e.g., a compact disc (Compact Disc ROM (CD-ROM), etc.), a digital versatile disc, a Blu-ray (registered trademark) 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, and other suitable storage media. The storage 1003 may be referred to as an auxiliary storage device.

[0385] The communication device 1004 is hardware (a transceiver device) for performing communication 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, a communication module, etc. The communication device 1004 may be configured to include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to implement at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD). For example, the above-described transceiver unit 120 (220), the transceiver antenna 130 (230), etc. may be implemented by the communication device 1004. The transceiver unit 120 (220) may be physically or logically separated and implemented by a transmitter unit 120a (220a) and a receiver unit 120b (220b).

[0386] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an external input. The output device 1006 is an output device (for example, a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that performs an output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

[0387] Also, 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 for each device.

[0388] In addition, 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), and a Field Programmable Gate Array (FPGA), and some or all of the functional blocks may be realized using the hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0389] (Modification example) In addition, 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, channel, symbol, and signal (signal or signaling) may be read interchangeably with each other. Also, a signal may be a message. A reference signal may also be abbreviated as RS and may be called a pilot, a pilot signal, etc. depending on the applicable standard. Further, a Component Carrier (CC) may be called a cell, a frequency carrier, a carrier frequency, etc.

[0390] The radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may be called a subframe. Further, the subframe may be composed of one or more slots in the time domain. The subframe may have a fixed time length (e.g., 1 ms) that does not depend on numerology.

[0391] Here, the new numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel. The new numerology may indicate, for example, at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering process performed by a transceiver in the frequency domain, specific windowing process performed by a transceiver in the time domain, etc.

[0392] A slot may be composed of one or more symbols (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. Also, a slot may be a time unit based on the new numerology.

[0393] A slot may include a plurality of mini-slots. Each mini-slot may be composed of one or more symbols in the time domain. Also, a mini-slot may be called a sub-slot. A mini-slot may be composed of a smaller number of symbols than a slot. The PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may be called PDSCH (PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using a mini-slot may be called PDSCH (PUSCH) mapping type B.

[0394] A radio frame, sub-frame, slot, mini-slot, and symbol all represent time units for signal transmission. For a radio frame, sub-frame, slot, mini-slot, and symbol, other corresponding names may be used. Note that the time units such as frame, sub-frame, slot, mini-slot, and symbol in this disclosure may be read interchangeably with each other.

[0395] For example, one sub-frame may be called a TTI, or a plurality of consecutive sub-frames may be called a TTI, or one slot or one mini-slot may be called a TTI. That is, at least one of the sub-frame and the TTI may be the sub-frame (1 ms) in the existing LTE, or may be a period shorter than 1 ms (for example, 1 - 13 symbols), or may be a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, mini-slot, etc. instead of a sub-frame.

[0396] Here, the TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) to each user terminal in units of TTI. Note that the definition of the TTI is not limited to this.

[0397] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), code block, codeword, etc., or may be a processing unit for scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) in which a transport block, code block, codeword, etc. are actually mapped may be shorter than the TTI.

[0398] In addition, when one slot or one mini-slot is called a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may be the minimum time unit for scheduling. Also, the number of slots (number of mini-slots) constituting the minimum time unit for the scheduling may be controlled.

[0399] A TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, etc. A TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini-slot, a sub-slot, a slot, etc.

[0400] Note that a long TTI (e.g., a normal TTI, a subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be read as a TTI having a TTI length less than that of the long TTI and equal to or more than 1 ms.

[0401] A resource block (Resource Block (RB)) is a resource allocation unit in the time domain and the frequency domain, and in the frequency domain, it may include one or a plurality of consecutive subcarriers (subcarriers). The number of subcarriers included in the RB may be the same regardless of the numerology, and may be, for example, 12. The number of subcarriers included in the RB may be determined based on the numerology.

[0402] Also, the RB may include one or a plurality of symbols in the time domain, and may have a length of 1 slot, 1 mini-slot, 1 subframe, or 1 TTI. One TTI, one subframe, etc. may each be constituted by one or a plurality of resource blocks.

[0403] One or more RBs may be referred to as Physical Resource Blocks (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0404] Also, a resource block may be composed of one or more Resource Elements (REs). For example, 1 RE may be a radio resource region of 1 sub-carrier and 1 symbol.

[0405] A Bandwidth Part (BWP) (which may also be referred to as a partial bandwidth, etc.) may represent a subset of consecutive common resource blocks (common RBs) for a certain numerology in a certain carrier. Here, the common RBs may be specified by the index of the RBs based on the common reference point of the carrier. A PRB may be defined in a certain BWP and numbered within the BWP.

[0406] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be configured within one carrier for a UE.

[0407] At least one of the configured BWPs may be active, and the UE may not be assumed to transmit and receive a predetermined signal / channel outside the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be read as "BWP".

[0408] Note that the structures such as the above-described radio frame, sub-frame, slot, mini-slot, and symbol are merely examples. For example, the number of sub-frames included in a radio frame, the number of slots per sub-frame or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of sub-carriers included in an RB, and the number of symbols, symbol length, cyclic prefix (CP) length, etc. within a TTI can be changed in various ways.

[0409] Also, the information, parameters, etc. described in the present disclosure may be represented using absolute values, relative values from a predetermined value, or corresponding other information. For example, a radio resource may be indicated by a predetermined index.

[0410] The names used for parameters, etc. in the present disclosure are not limiting names in any way. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Since various channels (such as PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, the various names assigned to these various channels and information elements are not limiting names in any way.

[0411] The information, signals, etc. described in the present disclosure may be represented using any of various 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 voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0412] Also, information, signals, etc. may be output from at least one of the upper layer to the lower layer and from the lower layer to the upper layer. Information, signals, etc. may be input and output via a plurality of network nodes.

[0413] The input / output information, signals, etc. may be stored in a specific location (e.g., memory) or may be managed using a management table. The information, signals, etc. to be input / output may be overwritten, updated, or appended. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to other devices.

[0414] The notification of information is not limited to the modes / 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 implemented by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0415] Note that the physical layer signaling may also be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Also, the RRC signaling may also be referred to as an RRC message and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc. Further, the MAC signaling may be notified, for example, using a MAC Control Element (CE).

[0416] Also, the notification of predetermined information (e.g., the notification of "being X") is not limited to an explicit notification and may be performed implicitly (e.g., by not performing the notification of the predetermined information or by the notification of another piece of information).

[0417] The determination may be made based on a value represented by 1 bit (either 0 or 1), a boolean value represented by true or false, or a numerical comparison (e.g., comparison with a predetermined value).

[0418] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc., whether called software, firmware, middleware, microcode, a hardware description language, or by some other name.

[0419] Also, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, when software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technologies (such as infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of the transmission medium.

[0420] The terms "system" and "network" used in this disclosure may be used interchangeably. "Network" may mean the devices (e.g., base stations) included in the network.

[0421] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", "panel", etc. can be used interchangeably.

[0422] 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. can be used interchangeably. The base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0423] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates a plurality of cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each of the smaller areas can also provide communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the whole of the coverage area of at least one of a base station and a base station subsystem that provides communication services in this coverage.

[0424] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE)", and "terminal" can be used interchangeably.

[0425] A mobile station may also be referred to as a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other appropriate term.

[0426] At least one of the base station and the mobile station may also 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 also be a device mounted on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), a moving body that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanoid or unmanned). Note that at least one of the base station and the mobile station also includes a device that does 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.

[0427] In addition, the base station in the present disclosure may be replaced by a user terminal. For example, for a configuration in which communication between a base station and a user terminal is replaced with communication between a plurality of user terminals (which may be referred to as, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.), each aspect / embodiment of the present disclosure may be applied. In this case, the functions of the above-described base station 10 may be configured to be functions of the user terminal 20. Also, terms such as "uplink" and "downlink" may be replaced with terms corresponding to communication between terminals (for example, "sidelink"). For example, an uplink channel, a downlink channel, etc. may be replaced with a sidelink channel.

[0428] Similarly, the user terminal in the present disclosure may be replaced by a base station. In this case, the functions of the above-described user terminal 20 may be configured to be functions of the base station 10.

[0429] In the present disclosure, operations assumed to be performed by a base station may, in some cases, be performed by its upper node. In a network including one or more network nodes having a base station, it is obvious that various operations performed for communication with a terminal can be performed by a base station, one or more network nodes other than the base station (for example, Mobility Management Entity (MME), Serving-Gateway (S-GW), etc., but not limited thereto), or a combination thereof.

[0430] Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched and used during execution. Also, the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present disclosure may be rearranged as long as there is no contradiction. For example, for the methods described in the present disclosure, the elements of various steps are presented using an exemplary order and are not limited to the specific order presented.

[0431] Each aspect / embodiment described in the present disclosure may be applied to systems using Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (x is, for example, an integer or a decimal), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), other suitable wireless communication methods, and next-generation systems extended based on these. Further, a combination of multiple systems (for example, a combination of LTE or LTE-A and 5G) may be applied.

[0432] The description "based on" used in the present disclosure does not mean "only based on" unless otherwise specified. In other words, the description "based on" means both "only based on" and "at least based on".

[0433] Any reference to an element using terms such as "first", "second", etc. used in this disclosure does not generally limit the amount or order of those elements. These terms can be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, a reference to a first and a second element does not mean that only two elements can be employed or that the first element must precede the second element in any way.

[0434] The term "determining" as used in this disclosure may encompass a wide variety of operations. For example, "determining" may be considered to be "judging", "calculating", "computing", "processing", "deriving", "investigating", "looking up, search, inquiry" (e.g., searching in a table, database, or another data structure), "ascertaining", etc.

[0435] Also, "determining" may be considered to be "receiving" (e.g., receiving information), "transmitting" (e.g., transmitting information), "input", "output", "accessing" (e.g., accessing data in a memory), etc.

[0436] Also, "determining" may be considered to be "resolving", "selecting", "choosing", "establishing", "comparing", etc. That is, "determining" may be considered to be performing some operation.

[0437] Also, "judgment (decision)" may be read as "assuming", "expecting", "considering", etc.

[0438] The "maximum transmit power" described in the present disclosure may mean the maximum value of the transmit power, may mean the nominal UE maximum transmit power, or may mean the rated UE maximum transmit power.

[0439] As used in this disclosure, the terms "connected" and "coupled", or any variations thereof, mean 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 "accessed".

[0440] In this disclosure, when two elements are connected, they can be considered to be "connected" or "coupled" to each other using one or more wires, cables, printed electrical connections, etc., and also, by way of some non-limiting and non-exhaustive examples, electromagnetic energy having wavelengths in the radio frequency region, microwave region, optical (both visible and invisible) region, etc.

[0441] In this disclosure, the term "A and B are different" may mean that "A and B are different from each other". Note that the term may also mean that "A and B are each different from C". Terms such as "separate" and "coupled" may also be interpreted in the same way as "different".

[0442] In the present disclosure, when terms such as "include", "including" and their variants are used, these terms are intended to be inclusive, similar to the term "comprising". Further, the term "or" used in the present disclosure is not intended to be an exclusive disjunction.

[0443] In the present disclosure, for example, when articles are added by translation, such as a, an and the in English, the present disclosure may include that the nouns following these articles are in the plural form.

[0444] As described above, the invention according to the present disclosure has been described in detail. However, it is obvious to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the invention defined based on the claims. Therefore, the description of the present disclosure is for illustrative purposes and does not impose any limiting meaning on the invention according to the present disclosure.

[0445] This application is based on Japanese Patent Application No. 2021-090578 filed on May 28, 2021. The entire content thereof is incorporated herein by reference.

Claims

1. A receiving unit that receives Radio Resource Control (RRC) parameters related to a list of Transmission Configuration Indicator (TCI) states including a plurality of types of transmission configuration indicator (TCI) states applicable to a plurality of types of channels and signals applied to each of a plurality of serving cells or a plurality of bandwidth parts (BWPs); A control unit that determines a TCI state to be applied to the channels and signals in each of the plurality of serving cells or the plurality of BWPs based on the RRC parameters; and has, When a reference signal of a first Quasi-Co-Location (QCL) type unique to each of the plurality of serving cells or the plurality of BWPs is set, information related to the serving cell and information related to the BWP are not included in the setting information of the first QCL type and the setting information of the second QCL type included in each of the plurality of TCI states, a terminal.

2. When a reference signal of the second QCL type common to each of the plurality of serving cells or the plurality of BWPs is set, information related to the serving cell and information related to the BWP are included in the setting information of the second QCL type included in each of the plurality of TCI states, and information related to the serving cell and information related to the BWP are not included in the setting information of the first QCL type included in each of the plurality of TCI states, the terminal according to claim 1.

3. Receiving Radio Resource Control (RRC) parameters related to a list of Transmission Configuration Indicator (TCI) states including a plurality of types of transmission configuration indicator (TCI) states applicable to a plurality of types of channels and signals applied to each of a plurality of serving cells or a plurality of bandwidth parts (BWPs); Determining a TCI state to be applied to the channels and signals in each of the plurality of serving cells or the plurality of BWPs based on the RRC parameters; and has, When a reference signal of a first Quasi-Co-Location (QCL) type unique to each of the plurality of serving cells or the plurality of BWPs is set, information related to the serving cell and information related to the BWP are not included in the setting information of the first QCL type and the setting information of the second QCL type included in each of the plurality of TCI states, a wireless communication method for a terminal.

4. A transmitting unit that transmits Radio Resource Control (RRC) parameters related to a list of Transmission Configuration Indicator (TCI) states, which are applicable to multiple types of channels and signals applied to each of a plurality of serving cells or a plurality of Bandwidth Parts (BWPs); A base station having a control unit that controls not to include information related to a serving cell and information related to a BWP in the setting information of a first Quasi-Co-Location (QCL) type and the setting information of a second QCL type included in each of the plurality of TCI states when setting a reference signal of the first QCL type specific to each of the plurality of serving cells or the plurality of BWPs; **Claim 5** A system having a terminal and a base station, wherein the terminal has a receiving unit that receives Radio Resource Control (RRC) parameters related to a list of Transmission Configuration Indicator (TCI) states, which are applicable to multiple types of channels and signals applied to each of a plurality of serving cells or a plurality of Bandwidth Parts (BWPs), and a control unit that determines a TCI state to be applied to the channels and signals in each of the plurality of serving cells or the plurality of BWPs based on the RRC parameters, and wherein the base station has a transmitting unit that transmits the RRC parameters, and in a system where a reference signal of a first Quasi-Co-Location (QCL) type specific to each of the plurality of serving cells or the plurality of BWPs is set, information related to a serving cell and information related to a BWP are not included in the setting information of the first QCL type and the setting information of the second QCL type included in each of the plurality of TCI states.

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